1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * thinkpad_acpi.c - ThinkPad ACPI Extras 4 * 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> 7 */ 8 9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 10 11 #define TPACPI_VERSION "0.26" 12 #define TPACPI_SYSFS_VERSION 0x030000 13 14 /* 15 * Changelog: 16 * 2007-10-20 changelog trimmed down 17 * 18 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to 19 * drivers/misc. 20 * 21 * 2006-11-22 0.13 new maintainer 22 * changelog now lives in git commit history, and will 23 * not be updated further in-file. 24 * 25 * 2005-03-17 0.11 support for 600e, 770x 26 * thanks to Jamie Lentin <lentinj@dial.pipex.com> 27 * 28 * 2005-01-16 0.9 use MODULE_VERSION 29 * thanks to Henrik Brix Andersen <brix@gentoo.org> 30 * fix parameter passing on module loading 31 * thanks to Rusty Russell <rusty@rustcorp.com.au> 32 * thanks to Jim Radford <radford@blackbean.org> 33 * 2004-11-08 0.8 fix init error case, don't return from a macro 34 * thanks to Chris Wright <chrisw@osdl.org> 35 */ 36 37 #include <linux/acpi.h> 38 #include <linux/backlight.h> 39 #include <linux/bitops.h> 40 #include <linux/delay.h> 41 #include <linux/dmi.h> 42 #include <linux/fb.h> 43 #include <linux/freezer.h> 44 #include <linux/hwmon.h> 45 #include <linux/hwmon-sysfs.h> 46 #include <linux/init.h> 47 #include <linux/input.h> 48 #include <linux/jiffies.h> 49 #include <linux/kernel.h> 50 #include <linux/kthread.h> 51 #include <linux/leds.h> 52 #include <linux/list.h> 53 #include <linux/lockdep.h> 54 #include <linux/module.h> 55 #include <linux/mutex.h> 56 #include <linux/nvram.h> 57 #include <linux/pci.h> 58 #include <linux/platform_device.h> 59 #include <linux/platform_profile.h> 60 #include <linux/power_supply.h> 61 #include <linux/proc_fs.h> 62 #include <linux/rfkill.h> 63 #include <linux/sched.h> 64 #include <linux/sched/signal.h> 65 #include <linux/seq_file.h> 66 #include <linux/slab.h> 67 #include <linux/string.h> 68 #include <linux/string_helpers.h> 69 #include <linux/sysfs.h> 70 #include <linux/types.h> 71 #include <linux/uaccess.h> 72 #include <linux/workqueue.h> 73 74 #include <acpi/battery.h> 75 #include <acpi/video.h> 76 77 #include <drm/drm_privacy_screen_driver.h> 78 79 #include <sound/control.h> 80 #include <sound/core.h> 81 #include <sound/initval.h> 82 83 #include "dual_accel_detect.h" 84 85 /* ThinkPad CMOS commands */ 86 #define TP_CMOS_VOLUME_DOWN 0 87 #define TP_CMOS_VOLUME_UP 1 88 #define TP_CMOS_VOLUME_MUTE 2 89 #define TP_CMOS_BRIGHTNESS_UP 4 90 #define TP_CMOS_BRIGHTNESS_DOWN 5 91 #define TP_CMOS_THINKLIGHT_ON 12 92 #define TP_CMOS_THINKLIGHT_OFF 13 93 94 /* NVRAM Addresses */ 95 enum tp_nvram_addr { 96 TP_NVRAM_ADDR_HK2 = 0x57, 97 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 98 TP_NVRAM_ADDR_VIDEO = 0x59, 99 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 100 TP_NVRAM_ADDR_MIXER = 0x60, 101 }; 102 103 /* NVRAM bit masks */ 104 enum { 105 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 106 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 107 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 108 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 109 TP_NVRAM_MASK_THINKLIGHT = 0x10, 110 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 111 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 112 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 113 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 114 TP_NVRAM_MASK_MUTE = 0x40, 115 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 116 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 117 TP_NVRAM_POS_LEVEL_VOLUME = 0, 118 }; 119 120 /* Misc NVRAM-related */ 121 enum { 122 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 123 }; 124 125 /* ACPI HIDs */ 126 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 127 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 128 #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 129 #define TPACPI_ACPI_EC_HID "PNP0C09" 130 131 /* Input IDs */ 132 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 133 #define TPACPI_HKEY_INPUT_VERSION 0x4101 134 135 /* ACPI \WGSV commands */ 136 enum { 137 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 138 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 139 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 140 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 141 }; 142 143 /* TP_ACPI_WGSV_GET_STATE bits */ 144 enum { 145 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 146 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 147 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 148 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 149 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 150 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 151 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 152 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 153 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 154 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 155 }; 156 157 /* HKEY events */ 158 enum tpacpi_hkey_event_t { 159 /* Hotkey-related */ 160 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ 161 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 162 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 163 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 164 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 165 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 166 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 167 TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */ 168 TP_HKEY_EV_AMT_TOGGLE = 0x131a, /* Toggle AMT on/off */ 169 170 /* Reasons for waking up from S3/S4 */ 171 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 172 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 173 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 174 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 175 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 176 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 177 178 /* Auto-sleep after eject request */ 179 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 180 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 181 182 /* Misc bay events */ 183 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 184 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 185 or port replicator */ 186 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 187 dock or port replicator */ 188 /* 189 * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013 190 * when keyboard cover is attached, detached or folded onto the back 191 */ 192 TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */ 193 TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */ 194 195 /* User-interface events */ 196 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 197 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 198 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 199 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 200 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 201 * enter/leave tablet mode 202 */ 203 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 204 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 205 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 206 207 /* Key-related user-interface events */ 208 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 209 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 210 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 211 212 /* Thermal events */ 213 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 214 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 215 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 216 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 217 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ 218 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set 219 * command completed. Related to 220 * AML DYTC */ 221 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation 222 * changed. Related to AML GMTS */ 223 224 /* AC-related events */ 225 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 226 227 /* Further user-interface events */ 228 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ 229 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ 230 231 /* Misc */ 232 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 233 }; 234 235 /**************************************************************************** 236 * Main driver 237 */ 238 239 #define TPACPI_NAME "thinkpad" 240 #define TPACPI_DESC "ThinkPad ACPI Extras" 241 #define TPACPI_FILE TPACPI_NAME "_acpi" 242 #define TPACPI_URL "http://ibm-acpi.sf.net/" 243 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 244 245 #define TPACPI_PROC_DIR "ibm" 246 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 247 #define TPACPI_DRVR_NAME TPACPI_FILE 248 #define TPACPI_DRVR_SHORTNAME "tpacpi" 249 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 250 251 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 252 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 253 254 #define TPACPI_MAX_ACPI_ARGS 3 255 256 /* Debugging printk groups */ 257 #define TPACPI_DBG_ALL 0xffff 258 #define TPACPI_DBG_DISCLOSETASK 0x8000 259 #define TPACPI_DBG_INIT 0x0001 260 #define TPACPI_DBG_EXIT 0x0002 261 #define TPACPI_DBG_RFKILL 0x0004 262 #define TPACPI_DBG_HKEY 0x0008 263 #define TPACPI_DBG_FAN 0x0010 264 #define TPACPI_DBG_BRGHT 0x0020 265 #define TPACPI_DBG_MIXER 0x0040 266 267 #define FAN_NOT_PRESENT 65535 268 269 /**************************************************************************** 270 * Driver-wide structs and misc. variables 271 */ 272 273 struct ibm_struct; 274 275 struct tp_acpi_drv_struct { 276 const struct acpi_device_id *hid; 277 struct acpi_driver *driver; 278 279 void (*notify) (struct ibm_struct *, u32); 280 acpi_handle *handle; 281 u32 type; 282 struct acpi_device *device; 283 }; 284 285 struct ibm_struct { 286 char *name; 287 288 int (*read) (struct seq_file *); 289 int (*write) (char *); 290 void (*exit) (void); 291 void (*resume) (void); 292 void (*suspend) (void); 293 void (*shutdown) (void); 294 295 struct list_head all_drivers; 296 297 struct tp_acpi_drv_struct *acpi; 298 299 struct { 300 u8 acpi_driver_registered:1; 301 u8 acpi_notify_installed:1; 302 u8 proc_created:1; 303 u8 init_called:1; 304 u8 experimental:1; 305 } flags; 306 }; 307 308 struct ibm_init_struct { 309 char param[32]; 310 311 int (*init) (struct ibm_init_struct *); 312 umode_t base_procfs_mode; 313 struct ibm_struct *data; 314 }; 315 316 /* DMI Quirks */ 317 struct quirk_entry { 318 bool btusb_bug; 319 }; 320 321 static struct quirk_entry quirk_btusb_bug = { 322 .btusb_bug = true, 323 }; 324 325 static struct { 326 u32 bluetooth:1; 327 u32 hotkey:1; 328 u32 hotkey_mask:1; 329 u32 hotkey_wlsw:1; 330 enum { 331 TP_HOTKEY_TABLET_NONE = 0, 332 TP_HOTKEY_TABLET_USES_MHKG, 333 TP_HOTKEY_TABLET_USES_GMMS, 334 } hotkey_tablet; 335 u32 kbdlight:1; 336 u32 light:1; 337 u32 light_status:1; 338 u32 bright_acpimode:1; 339 u32 bright_unkfw:1; 340 u32 wan:1; 341 u32 uwb:1; 342 u32 fan_ctrl_status_undef:1; 343 u32 second_fan:1; 344 u32 second_fan_ctl:1; 345 u32 beep_needs_two_args:1; 346 u32 mixer_no_level_control:1; 347 u32 battery_force_primary:1; 348 u32 input_device_registered:1; 349 u32 platform_drv_registered:1; 350 u32 sensors_pdrv_registered:1; 351 u32 hotkey_poll_active:1; 352 u32 has_adaptive_kbd:1; 353 u32 kbd_lang:1; 354 struct quirk_entry *quirks; 355 } tp_features; 356 357 static struct { 358 u16 hotkey_mask_ff:1; 359 u16 volume_ctrl_forbidden:1; 360 } tp_warned; 361 362 struct thinkpad_id_data { 363 unsigned int vendor; /* ThinkPad vendor: 364 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 365 366 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 367 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 368 369 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ 370 u32 ec_model; 371 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ 372 u16 ec_release; 373 374 char *model_str; /* ThinkPad T43 */ 375 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 376 }; 377 static struct thinkpad_id_data thinkpad_id; 378 379 static enum { 380 TPACPI_LIFE_INIT = 0, 381 TPACPI_LIFE_RUNNING, 382 TPACPI_LIFE_EXITING, 383 } tpacpi_lifecycle; 384 385 static int experimental; 386 static u32 dbg_level; 387 388 static struct workqueue_struct *tpacpi_wq; 389 390 enum led_status_t { 391 TPACPI_LED_OFF = 0, 392 TPACPI_LED_ON, 393 TPACPI_LED_BLINK, 394 }; 395 396 /* tpacpi LED class */ 397 struct tpacpi_led_classdev { 398 struct led_classdev led_classdev; 399 int led; 400 }; 401 402 /* brightness level capabilities */ 403 static unsigned int bright_maxlvl; /* 0 = unknown */ 404 405 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 406 static int dbg_wlswemul; 407 static bool tpacpi_wlsw_emulstate; 408 static int dbg_bluetoothemul; 409 static bool tpacpi_bluetooth_emulstate; 410 static int dbg_wwanemul; 411 static bool tpacpi_wwan_emulstate; 412 static int dbg_uwbemul; 413 static bool tpacpi_uwb_emulstate; 414 #endif 415 416 417 /************************************************************************* 418 * Debugging helpers 419 */ 420 421 #define dbg_printk(a_dbg_level, format, arg...) \ 422 do { \ 423 if (dbg_level & (a_dbg_level)) \ 424 printk(KERN_DEBUG pr_fmt("%s: " format), \ 425 __func__, ##arg); \ 426 } while (0) 427 428 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 429 #define vdbg_printk dbg_printk 430 static const char *str_supported(int is_supported); 431 #else str_supported(int is_supported)432 static inline const char *str_supported(int is_supported) { return ""; } 433 #define vdbg_printk(a_dbg_level, format, arg...) \ 434 do { if (0) no_printk(format, ##arg); } while (0) 435 #endif 436 tpacpi_log_usertask(const char * const what)437 static void tpacpi_log_usertask(const char * const what) 438 { 439 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 440 what, task_tgid_vnr(current)); 441 } 442 443 #define tpacpi_disclose_usertask(what, format, arg...) \ 444 do { \ 445 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 446 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 447 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 448 what, task_tgid_vnr(current), ## arg); \ 449 } \ 450 } while (0) 451 452 /* 453 * Quirk handling helpers 454 * 455 * ThinkPad IDs and versions seen in the field so far are 456 * two or three characters from the set [0-9A-Z], i.e. base 36. 457 * 458 * We use values well outside that range as specials. 459 */ 460 461 #define TPACPI_MATCH_ANY 0xffffffffU 462 #define TPACPI_MATCH_ANY_VERSION 0xffffU 463 #define TPACPI_MATCH_UNKNOWN 0U 464 465 /* TPID('1', 'Y') == 0x3159 */ 466 #define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) 467 #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) 468 #define TPVER TPID 469 470 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 471 { .vendor = PCI_VENDOR_ID_IBM, \ 472 .bios = TPID(__id1, __id2), \ 473 .ec = TPACPI_MATCH_ANY, \ 474 .quirks = (__quirk) } 475 476 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 477 { .vendor = PCI_VENDOR_ID_LENOVO, \ 478 .bios = TPID(__id1, __id2), \ 479 .ec = TPACPI_MATCH_ANY, \ 480 .quirks = (__quirk) } 481 482 #define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ 483 { .vendor = PCI_VENDOR_ID_LENOVO, \ 484 .bios = TPID3(__id1, __id2, __id3), \ 485 .ec = TPACPI_MATCH_ANY, \ 486 .quirks = (__quirk) } 487 488 #define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ 489 { .vendor = PCI_VENDOR_ID_IBM, \ 490 .bios = TPACPI_MATCH_ANY, \ 491 .ec = TPID(__id1, __id2), \ 492 .quirks = (__quirk) } 493 494 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 495 { .vendor = PCI_VENDOR_ID_LENOVO, \ 496 .bios = TPACPI_MATCH_ANY, \ 497 .ec = TPID(__id1, __id2), \ 498 .quirks = (__quirk) } 499 500 struct tpacpi_quirk { 501 unsigned int vendor; 502 u32 bios; 503 u32 ec; 504 unsigned long quirks; 505 }; 506 507 /** 508 * tpacpi_check_quirks() - search BIOS/EC version on a list 509 * @qlist: array of &struct tpacpi_quirk 510 * @qlist_size: number of elements in @qlist 511 * 512 * Iterates over a quirks list until one is found that matches the 513 * ThinkPad's vendor, BIOS and EC model. 514 * 515 * Returns 0 if nothing matches, otherwise returns the quirks field of 516 * the matching &struct tpacpi_quirk entry. 517 * 518 * The match criteria is: vendor, ec and bios much match. 519 */ tpacpi_check_quirks(const struct tpacpi_quirk * qlist,unsigned int qlist_size)520 static unsigned long __init tpacpi_check_quirks( 521 const struct tpacpi_quirk *qlist, 522 unsigned int qlist_size) 523 { 524 while (qlist_size) { 525 if ((qlist->vendor == thinkpad_id.vendor || 526 qlist->vendor == TPACPI_MATCH_ANY) && 527 (qlist->bios == thinkpad_id.bios_model || 528 qlist->bios == TPACPI_MATCH_ANY) && 529 (qlist->ec == thinkpad_id.ec_model || 530 qlist->ec == TPACPI_MATCH_ANY)) 531 return qlist->quirks; 532 533 qlist_size--; 534 qlist++; 535 } 536 return 0; 537 } 538 tpacpi_is_lenovo(void)539 static inline bool __pure __init tpacpi_is_lenovo(void) 540 { 541 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 542 } 543 tpacpi_is_ibm(void)544 static inline bool __pure __init tpacpi_is_ibm(void) 545 { 546 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 547 } 548 549 /**************************************************************************** 550 **************************************************************************** 551 * 552 * ACPI Helpers and device model 553 * 554 **************************************************************************** 555 ****************************************************************************/ 556 557 /************************************************************************* 558 * ACPI basic handles 559 */ 560 561 static acpi_handle root_handle; 562 static acpi_handle ec_handle; 563 564 #define TPACPI_HANDLE(object, parent, paths...) \ 565 static acpi_handle object##_handle; \ 566 static const acpi_handle * const object##_parent __initconst = \ 567 &parent##_handle; \ 568 static char *object##_paths[] __initdata = { paths } 569 570 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 571 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 572 573 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 574 /* T4x, X31, X40 */ 575 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 576 "\\CMS", /* R40, R40e */ 577 ); /* all others */ 578 579 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 580 "^HKEY", /* R30, R31 */ 581 "HKEY", /* all others */ 582 ); /* 570 */ 583 584 /************************************************************************* 585 * ACPI helpers 586 */ 587 acpi_evalf(acpi_handle handle,int * res,char * method,char * fmt,...)588 static int acpi_evalf(acpi_handle handle, 589 int *res, char *method, char *fmt, ...) 590 { 591 char *fmt0 = fmt; 592 struct acpi_object_list params; 593 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 594 struct acpi_buffer result, *resultp; 595 union acpi_object out_obj; 596 acpi_status status; 597 va_list ap; 598 char res_type; 599 int success; 600 int quiet; 601 602 if (!*fmt) { 603 pr_err("acpi_evalf() called with empty format\n"); 604 return 0; 605 } 606 607 if (*fmt == 'q') { 608 quiet = 1; 609 fmt++; 610 } else 611 quiet = 0; 612 613 res_type = *(fmt++); 614 615 params.count = 0; 616 params.pointer = &in_objs[0]; 617 618 va_start(ap, fmt); 619 while (*fmt) { 620 char c = *(fmt++); 621 switch (c) { 622 case 'd': /* int */ 623 in_objs[params.count].integer.value = va_arg(ap, int); 624 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 625 break; 626 /* add more types as needed */ 627 default: 628 pr_err("acpi_evalf() called with invalid format character '%c'\n", 629 c); 630 va_end(ap); 631 return 0; 632 } 633 } 634 va_end(ap); 635 636 if (res_type != 'v') { 637 result.length = sizeof(out_obj); 638 result.pointer = &out_obj; 639 resultp = &result; 640 } else 641 resultp = NULL; 642 643 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 644 645 switch (res_type) { 646 case 'd': /* int */ 647 success = (status == AE_OK && 648 out_obj.type == ACPI_TYPE_INTEGER); 649 if (success && res) 650 *res = out_obj.integer.value; 651 break; 652 case 'v': /* void */ 653 success = status == AE_OK; 654 break; 655 /* add more types as needed */ 656 default: 657 pr_err("acpi_evalf() called with invalid format character '%c'\n", 658 res_type); 659 return 0; 660 } 661 662 if (!success && !quiet) 663 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 664 method, fmt0, acpi_format_exception(status)); 665 666 return success; 667 } 668 acpi_ec_read(int i,u8 * p)669 static int acpi_ec_read(int i, u8 *p) 670 { 671 int v; 672 673 if (ecrd_handle) { 674 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 675 return 0; 676 *p = v; 677 } else { 678 if (ec_read(i, p) < 0) 679 return 0; 680 } 681 682 return 1; 683 } 684 acpi_ec_write(int i,u8 v)685 static int acpi_ec_write(int i, u8 v) 686 { 687 if (ecwr_handle) { 688 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 689 return 0; 690 } else { 691 if (ec_write(i, v) < 0) 692 return 0; 693 } 694 695 return 1; 696 } 697 issue_thinkpad_cmos_command(int cmos_cmd)698 static int issue_thinkpad_cmos_command(int cmos_cmd) 699 { 700 if (!cmos_handle) 701 return -ENXIO; 702 703 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 704 return -EIO; 705 706 return 0; 707 } 708 709 /************************************************************************* 710 * ACPI device model 711 */ 712 713 #define TPACPI_ACPIHANDLE_INIT(object) \ 714 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 715 object##_paths, ARRAY_SIZE(object##_paths)) 716 drv_acpi_handle_init(const char * name,acpi_handle * handle,const acpi_handle parent,char ** paths,const int num_paths)717 static void __init drv_acpi_handle_init(const char *name, 718 acpi_handle *handle, const acpi_handle parent, 719 char **paths, const int num_paths) 720 { 721 int i; 722 acpi_status status; 723 724 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 725 name); 726 727 for (i = 0; i < num_paths; i++) { 728 status = acpi_get_handle(parent, paths[i], handle); 729 if (ACPI_SUCCESS(status)) { 730 dbg_printk(TPACPI_DBG_INIT, 731 "Found ACPI handle %s for %s\n", 732 paths[i], name); 733 return; 734 } 735 } 736 737 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 738 name); 739 *handle = NULL; 740 } 741 tpacpi_acpi_handle_locate_callback(acpi_handle handle,u32 level,void * context,void ** return_value)742 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 743 u32 level, void *context, void **return_value) 744 { 745 if (!strcmp(context, "video")) { 746 struct acpi_device *dev = acpi_fetch_acpi_dev(handle); 747 748 if (!dev || strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 749 return AE_OK; 750 } 751 752 *(acpi_handle *)return_value = handle; 753 754 return AE_CTRL_TERMINATE; 755 } 756 tpacpi_acpi_handle_locate(const char * name,const char * hid,acpi_handle * handle)757 static void __init tpacpi_acpi_handle_locate(const char *name, 758 const char *hid, 759 acpi_handle *handle) 760 { 761 acpi_status status; 762 acpi_handle device_found; 763 764 BUG_ON(!name || !handle); 765 vdbg_printk(TPACPI_DBG_INIT, 766 "trying to locate ACPI handle for %s, using HID %s\n", 767 name, hid ? hid : "NULL"); 768 769 memset(&device_found, 0, sizeof(device_found)); 770 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 771 (void *)name, &device_found); 772 773 *handle = NULL; 774 775 if (ACPI_SUCCESS(status)) { 776 *handle = device_found; 777 dbg_printk(TPACPI_DBG_INIT, 778 "Found ACPI handle for %s\n", name); 779 } else { 780 vdbg_printk(TPACPI_DBG_INIT, 781 "Could not locate an ACPI handle for %s: %s\n", 782 name, acpi_format_exception(status)); 783 } 784 } 785 dispatch_acpi_notify(acpi_handle handle,u32 event,void * data)786 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 787 { 788 struct ibm_struct *ibm = data; 789 790 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 791 return; 792 793 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 794 return; 795 796 ibm->acpi->notify(ibm, event); 797 } 798 setup_acpi_notify(struct ibm_struct * ibm)799 static int __init setup_acpi_notify(struct ibm_struct *ibm) 800 { 801 acpi_status status; 802 803 BUG_ON(!ibm->acpi); 804 805 if (!*ibm->acpi->handle) 806 return 0; 807 808 vdbg_printk(TPACPI_DBG_INIT, 809 "setting up ACPI notify for %s\n", ibm->name); 810 811 ibm->acpi->device = acpi_fetch_acpi_dev(*ibm->acpi->handle); 812 if (!ibm->acpi->device) { 813 pr_err("acpi_fetch_acpi_dev(%s) failed\n", ibm->name); 814 return -ENODEV; 815 } 816 817 ibm->acpi->device->driver_data = ibm; 818 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 819 TPACPI_ACPI_EVENT_PREFIX, 820 ibm->name); 821 822 status = acpi_install_notify_handler(*ibm->acpi->handle, 823 ibm->acpi->type, dispatch_acpi_notify, ibm); 824 if (ACPI_FAILURE(status)) { 825 if (status == AE_ALREADY_EXISTS) { 826 pr_notice("another device driver is already handling %s events\n", 827 ibm->name); 828 } else { 829 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 830 ibm->name, acpi_format_exception(status)); 831 } 832 return -ENODEV; 833 } 834 ibm->flags.acpi_notify_installed = 1; 835 return 0; 836 } 837 tpacpi_device_add(struct acpi_device * device)838 static int __init tpacpi_device_add(struct acpi_device *device) 839 { 840 return 0; 841 } 842 register_tpacpi_subdriver(struct ibm_struct * ibm)843 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 844 { 845 int rc; 846 847 dbg_printk(TPACPI_DBG_INIT, 848 "registering %s as an ACPI driver\n", ibm->name); 849 850 BUG_ON(!ibm->acpi); 851 852 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 853 if (!ibm->acpi->driver) { 854 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 855 return -ENOMEM; 856 } 857 858 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 859 ibm->acpi->driver->ids = ibm->acpi->hid; 860 861 ibm->acpi->driver->ops.add = &tpacpi_device_add; 862 863 rc = acpi_bus_register_driver(ibm->acpi->driver); 864 if (rc < 0) { 865 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 866 ibm->name, rc); 867 kfree(ibm->acpi->driver); 868 ibm->acpi->driver = NULL; 869 } else if (!rc) 870 ibm->flags.acpi_driver_registered = 1; 871 872 return rc; 873 } 874 875 876 /**************************************************************************** 877 **************************************************************************** 878 * 879 * Procfs Helpers 880 * 881 **************************************************************************** 882 ****************************************************************************/ 883 dispatch_proc_show(struct seq_file * m,void * v)884 static int dispatch_proc_show(struct seq_file *m, void *v) 885 { 886 struct ibm_struct *ibm = m->private; 887 888 if (!ibm || !ibm->read) 889 return -EINVAL; 890 return ibm->read(m); 891 } 892 dispatch_proc_open(struct inode * inode,struct file * file)893 static int dispatch_proc_open(struct inode *inode, struct file *file) 894 { 895 return single_open(file, dispatch_proc_show, pde_data(inode)); 896 } 897 dispatch_proc_write(struct file * file,const char __user * userbuf,size_t count,loff_t * pos)898 static ssize_t dispatch_proc_write(struct file *file, 899 const char __user *userbuf, 900 size_t count, loff_t *pos) 901 { 902 struct ibm_struct *ibm = pde_data(file_inode(file)); 903 char *kernbuf; 904 int ret; 905 906 if (!ibm || !ibm->write) 907 return -EINVAL; 908 if (count > PAGE_SIZE - 1) 909 return -EINVAL; 910 911 kernbuf = memdup_user_nul(userbuf, count); 912 if (IS_ERR(kernbuf)) 913 return PTR_ERR(kernbuf); 914 ret = ibm->write(kernbuf); 915 if (ret == 0) 916 ret = count; 917 918 kfree(kernbuf); 919 920 return ret; 921 } 922 923 static const struct proc_ops dispatch_proc_ops = { 924 .proc_open = dispatch_proc_open, 925 .proc_read = seq_read, 926 .proc_lseek = seq_lseek, 927 .proc_release = single_release, 928 .proc_write = dispatch_proc_write, 929 }; 930 931 /**************************************************************************** 932 **************************************************************************** 933 * 934 * Device model: input, hwmon and platform 935 * 936 **************************************************************************** 937 ****************************************************************************/ 938 939 static struct platform_device *tpacpi_pdev; 940 static struct platform_device *tpacpi_sensors_pdev; 941 static struct device *tpacpi_hwmon; 942 static struct input_dev *tpacpi_inputdev; 943 static struct mutex tpacpi_inputdev_send_mutex; 944 static LIST_HEAD(tpacpi_all_drivers); 945 946 #ifdef CONFIG_PM_SLEEP tpacpi_suspend_handler(struct device * dev)947 static int tpacpi_suspend_handler(struct device *dev) 948 { 949 struct ibm_struct *ibm, *itmp; 950 951 list_for_each_entry_safe(ibm, itmp, 952 &tpacpi_all_drivers, 953 all_drivers) { 954 if (ibm->suspend) 955 (ibm->suspend)(); 956 } 957 958 return 0; 959 } 960 tpacpi_resume_handler(struct device * dev)961 static int tpacpi_resume_handler(struct device *dev) 962 { 963 struct ibm_struct *ibm, *itmp; 964 965 list_for_each_entry_safe(ibm, itmp, 966 &tpacpi_all_drivers, 967 all_drivers) { 968 if (ibm->resume) 969 (ibm->resume)(); 970 } 971 972 return 0; 973 } 974 #endif 975 976 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 977 tpacpi_suspend_handler, tpacpi_resume_handler); 978 tpacpi_shutdown_handler(struct platform_device * pdev)979 static void tpacpi_shutdown_handler(struct platform_device *pdev) 980 { 981 struct ibm_struct *ibm, *itmp; 982 983 list_for_each_entry_safe(ibm, itmp, 984 &tpacpi_all_drivers, 985 all_drivers) { 986 if (ibm->shutdown) 987 (ibm->shutdown)(); 988 } 989 } 990 991 /************************************************************************* 992 * sysfs support helpers 993 */ 994 parse_strtoul(const char * buf,unsigned long max,unsigned long * value)995 static int parse_strtoul(const char *buf, 996 unsigned long max, unsigned long *value) 997 { 998 char *endp; 999 1000 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1001 endp = skip_spaces(endp); 1002 if (*endp || *value > max) 1003 return -EINVAL; 1004 1005 return 0; 1006 } 1007 tpacpi_disable_brightness_delay(void)1008 static void tpacpi_disable_brightness_delay(void) 1009 { 1010 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1011 pr_notice("ACPI backlight control delay disabled\n"); 1012 } 1013 printk_deprecated_attribute(const char * const what,const char * const details)1014 static void printk_deprecated_attribute(const char * const what, 1015 const char * const details) 1016 { 1017 tpacpi_log_usertask("deprecated sysfs attribute"); 1018 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", 1019 what, details); 1020 } 1021 1022 /************************************************************************* 1023 * rfkill and radio control support helpers 1024 */ 1025 1026 /* 1027 * ThinkPad-ACPI firmware handling model: 1028 * 1029 * WLSW (master wireless switch) is event-driven, and is common to all 1030 * firmware-controlled radios. It cannot be controlled, just monitored, 1031 * as expected. It overrides all radio state in firmware 1032 * 1033 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1034 * (TODO: verify how WLSW interacts with the returned radio state). 1035 * 1036 * The only time there are shadow radio state changes, is when 1037 * masked-off hotkeys are used. 1038 */ 1039 1040 /* 1041 * Internal driver API for radio state: 1042 * 1043 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1044 * bool: true means radio blocked (off) 1045 */ 1046 enum tpacpi_rfkill_state { 1047 TPACPI_RFK_RADIO_OFF = 0, 1048 TPACPI_RFK_RADIO_ON 1049 }; 1050 1051 /* rfkill switches */ 1052 enum tpacpi_rfk_id { 1053 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1054 TPACPI_RFK_WWAN_SW_ID, 1055 TPACPI_RFK_UWB_SW_ID, 1056 TPACPI_RFK_SW_MAX 1057 }; 1058 1059 static const char *tpacpi_rfkill_names[] = { 1060 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1061 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1062 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1063 [TPACPI_RFK_SW_MAX] = NULL 1064 }; 1065 1066 /* ThinkPad-ACPI rfkill subdriver */ 1067 struct tpacpi_rfk { 1068 struct rfkill *rfkill; 1069 enum tpacpi_rfk_id id; 1070 const struct tpacpi_rfk_ops *ops; 1071 }; 1072 1073 struct tpacpi_rfk_ops { 1074 /* firmware interface */ 1075 int (*get_status)(void); 1076 int (*set_status)(const enum tpacpi_rfkill_state); 1077 }; 1078 1079 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1080 1081 /* Query FW and update rfkill sw state for a given rfkill switch */ tpacpi_rfk_update_swstate(const struct tpacpi_rfk * tp_rfk)1082 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1083 { 1084 int status; 1085 1086 if (!tp_rfk) 1087 return -ENODEV; 1088 1089 status = (tp_rfk->ops->get_status)(); 1090 if (status < 0) 1091 return status; 1092 1093 rfkill_set_sw_state(tp_rfk->rfkill, 1094 (status == TPACPI_RFK_RADIO_OFF)); 1095 1096 return status; 1097 } 1098 1099 /* 1100 * Sync the HW-blocking state of all rfkill switches, 1101 * do notice it causes the rfkill core to schedule uevents 1102 */ tpacpi_rfk_update_hwblock_state(bool blocked)1103 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1104 { 1105 unsigned int i; 1106 struct tpacpi_rfk *tp_rfk; 1107 1108 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1109 tp_rfk = tpacpi_rfkill_switches[i]; 1110 if (tp_rfk) { 1111 if (rfkill_set_hw_state(tp_rfk->rfkill, 1112 blocked)) { 1113 /* ignore -- we track sw block */ 1114 } 1115 } 1116 } 1117 } 1118 1119 /* Call to get the WLSW state from the firmware */ 1120 static int hotkey_get_wlsw(void); 1121 1122 /* Call to query WLSW state and update all rfkill switches */ tpacpi_rfk_check_hwblock_state(void)1123 static bool tpacpi_rfk_check_hwblock_state(void) 1124 { 1125 int res = hotkey_get_wlsw(); 1126 int hw_blocked; 1127 1128 /* When unknown or unsupported, we have to assume it is unblocked */ 1129 if (res < 0) 1130 return false; 1131 1132 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1133 tpacpi_rfk_update_hwblock_state(hw_blocked); 1134 1135 return hw_blocked; 1136 } 1137 tpacpi_rfk_hook_set_block(void * data,bool blocked)1138 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1139 { 1140 struct tpacpi_rfk *tp_rfk = data; 1141 int res; 1142 1143 dbg_printk(TPACPI_DBG_RFKILL, 1144 "request to change radio state to %s\n", 1145 blocked ? "blocked" : "unblocked"); 1146 1147 /* try to set radio state */ 1148 res = (tp_rfk->ops->set_status)(blocked ? 1149 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1150 1151 /* and update the rfkill core with whatever the FW really did */ 1152 tpacpi_rfk_update_swstate(tp_rfk); 1153 1154 return (res < 0) ? res : 0; 1155 } 1156 1157 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1158 .set_block = tpacpi_rfk_hook_set_block, 1159 }; 1160 tpacpi_new_rfkill(const enum tpacpi_rfk_id id,const struct tpacpi_rfk_ops * tp_rfkops,const enum rfkill_type rfktype,const char * name,const bool set_default)1161 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1162 const struct tpacpi_rfk_ops *tp_rfkops, 1163 const enum rfkill_type rfktype, 1164 const char *name, 1165 const bool set_default) 1166 { 1167 struct tpacpi_rfk *atp_rfk; 1168 int res; 1169 bool sw_state = false; 1170 bool hw_state; 1171 int sw_status; 1172 1173 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1174 1175 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1176 if (atp_rfk) 1177 atp_rfk->rfkill = rfkill_alloc(name, 1178 &tpacpi_pdev->dev, 1179 rfktype, 1180 &tpacpi_rfk_rfkill_ops, 1181 atp_rfk); 1182 if (!atp_rfk || !atp_rfk->rfkill) { 1183 pr_err("failed to allocate memory for rfkill class\n"); 1184 kfree(atp_rfk); 1185 return -ENOMEM; 1186 } 1187 1188 atp_rfk->id = id; 1189 atp_rfk->ops = tp_rfkops; 1190 1191 sw_status = (tp_rfkops->get_status)(); 1192 if (sw_status < 0) { 1193 pr_err("failed to read initial state for %s, error %d\n", 1194 name, sw_status); 1195 } else { 1196 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1197 if (set_default) { 1198 /* try to keep the initial state, since we ask the 1199 * firmware to preserve it across S5 in NVRAM */ 1200 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1201 } 1202 } 1203 hw_state = tpacpi_rfk_check_hwblock_state(); 1204 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1205 1206 res = rfkill_register(atp_rfk->rfkill); 1207 if (res < 0) { 1208 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1209 rfkill_destroy(atp_rfk->rfkill); 1210 kfree(atp_rfk); 1211 return res; 1212 } 1213 1214 tpacpi_rfkill_switches[id] = atp_rfk; 1215 1216 pr_info("rfkill switch %s: radio is %sblocked\n", 1217 name, (sw_state || hw_state) ? "" : "un"); 1218 return 0; 1219 } 1220 tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)1221 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1222 { 1223 struct tpacpi_rfk *tp_rfk; 1224 1225 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1226 1227 tp_rfk = tpacpi_rfkill_switches[id]; 1228 if (tp_rfk) { 1229 rfkill_unregister(tp_rfk->rfkill); 1230 rfkill_destroy(tp_rfk->rfkill); 1231 tpacpi_rfkill_switches[id] = NULL; 1232 kfree(tp_rfk); 1233 } 1234 } 1235 printk_deprecated_rfkill_attribute(const char * const what)1236 static void printk_deprecated_rfkill_attribute(const char * const what) 1237 { 1238 printk_deprecated_attribute(what, 1239 "Please switch to generic rfkill before year 2010"); 1240 } 1241 1242 /* sysfs <radio> enable ------------------------------------------------ */ tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,struct device_attribute * attr,char * buf)1243 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1244 struct device_attribute *attr, 1245 char *buf) 1246 { 1247 int status; 1248 1249 printk_deprecated_rfkill_attribute(attr->attr.name); 1250 1251 /* This is in the ABI... */ 1252 if (tpacpi_rfk_check_hwblock_state()) { 1253 status = TPACPI_RFK_RADIO_OFF; 1254 } else { 1255 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1256 if (status < 0) 1257 return status; 1258 } 1259 1260 return sysfs_emit(buf, "%d\n", 1261 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1262 } 1263 tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,struct device_attribute * attr,const char * buf,size_t count)1264 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1265 struct device_attribute *attr, 1266 const char *buf, size_t count) 1267 { 1268 unsigned long t; 1269 int res; 1270 1271 printk_deprecated_rfkill_attribute(attr->attr.name); 1272 1273 if (parse_strtoul(buf, 1, &t)) 1274 return -EINVAL; 1275 1276 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1277 1278 /* This is in the ABI... */ 1279 if (tpacpi_rfk_check_hwblock_state() && !!t) 1280 return -EPERM; 1281 1282 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1283 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1284 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1285 1286 return (res < 0) ? res : count; 1287 } 1288 1289 /* procfs -------------------------------------------------------------- */ tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id,struct seq_file * m)1290 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1291 { 1292 if (id >= TPACPI_RFK_SW_MAX) 1293 seq_printf(m, "status:\t\tnot supported\n"); 1294 else { 1295 int status; 1296 1297 /* This is in the ABI... */ 1298 if (tpacpi_rfk_check_hwblock_state()) { 1299 status = TPACPI_RFK_RADIO_OFF; 1300 } else { 1301 status = tpacpi_rfk_update_swstate( 1302 tpacpi_rfkill_switches[id]); 1303 if (status < 0) 1304 return status; 1305 } 1306 1307 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status == TPACPI_RFK_RADIO_ON)); 1308 seq_printf(m, "commands:\tenable, disable\n"); 1309 } 1310 1311 return 0; 1312 } 1313 tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id,char * buf)1314 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1315 { 1316 char *cmd; 1317 int status = -1; 1318 int res = 0; 1319 1320 if (id >= TPACPI_RFK_SW_MAX) 1321 return -ENODEV; 1322 1323 while ((cmd = strsep(&buf, ","))) { 1324 if (strstarts(cmd, "enable")) 1325 status = TPACPI_RFK_RADIO_ON; 1326 else if (strstarts(cmd, "disable")) 1327 status = TPACPI_RFK_RADIO_OFF; 1328 else 1329 return -EINVAL; 1330 } 1331 1332 if (status != -1) { 1333 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1334 str_enable_disable(status == TPACPI_RFK_RADIO_ON), 1335 tpacpi_rfkill_names[id]); 1336 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1337 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1338 } 1339 1340 return res; 1341 } 1342 1343 /************************************************************************* 1344 * thinkpad-acpi driver attributes 1345 */ 1346 1347 /* interface_version --------------------------------------------------- */ interface_version_show(struct device_driver * drv,char * buf)1348 static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1349 { 1350 return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION); 1351 } 1352 static DRIVER_ATTR_RO(interface_version); 1353 1354 /* debug_level --------------------------------------------------------- */ debug_level_show(struct device_driver * drv,char * buf)1355 static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1356 { 1357 return sysfs_emit(buf, "0x%04x\n", dbg_level); 1358 } 1359 debug_level_store(struct device_driver * drv,const char * buf,size_t count)1360 static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1361 size_t count) 1362 { 1363 unsigned long t; 1364 1365 if (parse_strtoul(buf, 0xffff, &t)) 1366 return -EINVAL; 1367 1368 dbg_level = t; 1369 1370 return count; 1371 } 1372 static DRIVER_ATTR_RW(debug_level); 1373 1374 /* version ------------------------------------------------------------- */ version_show(struct device_driver * drv,char * buf)1375 static ssize_t version_show(struct device_driver *drv, char *buf) 1376 { 1377 return sysfs_emit(buf, "%s v%s\n", 1378 TPACPI_DESC, TPACPI_VERSION); 1379 } 1380 static DRIVER_ATTR_RO(version); 1381 1382 /* --------------------------------------------------------------------- */ 1383 1384 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1385 1386 /* wlsw_emulstate ------------------------------------------------------ */ wlsw_emulstate_show(struct device_driver * drv,char * buf)1387 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1388 { 1389 return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate); 1390 } 1391 wlsw_emulstate_store(struct device_driver * drv,const char * buf,size_t count)1392 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1393 size_t count) 1394 { 1395 unsigned long t; 1396 1397 if (parse_strtoul(buf, 1, &t)) 1398 return -EINVAL; 1399 1400 if (tpacpi_wlsw_emulstate != !!t) { 1401 tpacpi_wlsw_emulstate = !!t; 1402 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1403 } 1404 1405 return count; 1406 } 1407 static DRIVER_ATTR_RW(wlsw_emulstate); 1408 1409 /* bluetooth_emulstate ------------------------------------------------- */ bluetooth_emulstate_show(struct device_driver * drv,char * buf)1410 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1411 { 1412 return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate); 1413 } 1414 bluetooth_emulstate_store(struct device_driver * drv,const char * buf,size_t count)1415 static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1416 const char *buf, size_t count) 1417 { 1418 unsigned long t; 1419 1420 if (parse_strtoul(buf, 1, &t)) 1421 return -EINVAL; 1422 1423 tpacpi_bluetooth_emulstate = !!t; 1424 1425 return count; 1426 } 1427 static DRIVER_ATTR_RW(bluetooth_emulstate); 1428 1429 /* wwan_emulstate ------------------------------------------------- */ wwan_emulstate_show(struct device_driver * drv,char * buf)1430 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1431 { 1432 return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate); 1433 } 1434 wwan_emulstate_store(struct device_driver * drv,const char * buf,size_t count)1435 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1436 size_t count) 1437 { 1438 unsigned long t; 1439 1440 if (parse_strtoul(buf, 1, &t)) 1441 return -EINVAL; 1442 1443 tpacpi_wwan_emulstate = !!t; 1444 1445 return count; 1446 } 1447 static DRIVER_ATTR_RW(wwan_emulstate); 1448 1449 /* uwb_emulstate ------------------------------------------------- */ uwb_emulstate_show(struct device_driver * drv,char * buf)1450 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1451 { 1452 return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate); 1453 } 1454 uwb_emulstate_store(struct device_driver * drv,const char * buf,size_t count)1455 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1456 size_t count) 1457 { 1458 unsigned long t; 1459 1460 if (parse_strtoul(buf, 1, &t)) 1461 return -EINVAL; 1462 1463 tpacpi_uwb_emulstate = !!t; 1464 1465 return count; 1466 } 1467 static DRIVER_ATTR_RW(uwb_emulstate); 1468 #endif 1469 1470 /************************************************************************* 1471 * Firmware Data 1472 */ 1473 1474 /* 1475 * Table of recommended minimum BIOS versions 1476 * 1477 * Reasons for listing: 1478 * 1. Stable BIOS, listed because the unknown amount of 1479 * bugs and bad ACPI behaviour on older versions 1480 * 1481 * 2. BIOS or EC fw with known bugs that trigger on Linux 1482 * 1483 * 3. BIOS with known reduced functionality in older versions 1484 * 1485 * We recommend the latest BIOS and EC version. 1486 * We only support the latest BIOS and EC fw version as a rule. 1487 * 1488 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1489 * Information from users in ThinkWiki 1490 * 1491 * WARNING: we use this table also to detect that the machine is 1492 * a ThinkPad in some cases, so don't remove entries lightly. 1493 */ 1494 1495 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1496 { .vendor = (__v), \ 1497 .bios = TPID(__id1, __id2), \ 1498 .ec = TPACPI_MATCH_ANY, \ 1499 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ 1500 | TPVER(__bv1, __bv2) } 1501 1502 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1503 __eid, __ev1, __ev2) \ 1504 { .vendor = (__v), \ 1505 .bios = TPID(__bid1, __bid2), \ 1506 .ec = __eid, \ 1507 .quirks = TPVER(__ev1, __ev2) << 16 \ 1508 | TPVER(__bv1, __bv2) } 1509 1510 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1511 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1512 1513 /* Outdated IBM BIOSes often lack the EC id string */ 1514 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1515 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1516 __bv1, __bv2, TPID(__id1, __id2), \ 1517 __ev1, __ev2), \ 1518 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1519 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1520 __ev1, __ev2) 1521 1522 /* Outdated IBM BIOSes often lack the EC id string */ 1523 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1524 __eid1, __eid2, __ev1, __ev2) \ 1525 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1526 __bv1, __bv2, TPID(__eid1, __eid2), \ 1527 __ev1, __ev2), \ 1528 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1529 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1530 __ev1, __ev2) 1531 1532 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1533 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1534 1535 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1536 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1537 __bv1, __bv2, TPID(__id1, __id2), \ 1538 __ev1, __ev2) 1539 1540 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1541 __eid1, __eid2, __ev1, __ev2) \ 1542 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1543 __bv1, __bv2, TPID(__eid1, __eid2), \ 1544 __ev1, __ev2) 1545 1546 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1547 /* Numeric models ------------------ */ 1548 /* FW MODEL BIOS VERS */ 1549 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1550 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1551 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1552 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1553 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1554 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1555 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1556 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1557 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1558 1559 /* A-series ------------------------- */ 1560 /* FW MODEL BIOS VERS EC VERS */ 1561 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1562 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1563 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1564 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1565 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1566 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1567 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1568 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1569 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1570 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1571 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1572 1573 /* G-series ------------------------- */ 1574 /* FW MODEL BIOS VERS */ 1575 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1576 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1577 1578 /* R-series, T-series --------------- */ 1579 /* FW MODEL BIOS VERS EC VERS */ 1580 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1581 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1582 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1583 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1584 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1585 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1586 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1587 T40/p, T41/p, T42/p (1) */ 1588 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1589 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1590 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1591 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1592 1593 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1594 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1595 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1596 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1597 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1598 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1599 1600 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1601 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1602 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1603 1604 /* BIOS FW BIOS VERS EC FW EC VERS */ 1605 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1606 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1607 1608 /* X-series ------------------------- */ 1609 /* FW MODEL BIOS VERS EC VERS */ 1610 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1611 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1612 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1613 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1614 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1615 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1616 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1617 1618 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1619 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1620 1621 /* (0) - older versions lack DMI EC fw string and functionality */ 1622 /* (1) - older versions known to lack functionality */ 1623 }; 1624 1625 #undef TPV_QL1 1626 #undef TPV_QL0 1627 #undef TPV_QI2 1628 #undef TPV_QI1 1629 #undef TPV_QI0 1630 #undef TPV_Q_X 1631 #undef TPV_Q 1632 tpacpi_check_outdated_fw(void)1633 static void __init tpacpi_check_outdated_fw(void) 1634 { 1635 unsigned long fwvers; 1636 u16 ec_version, bios_version; 1637 1638 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1639 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1640 1641 if (!fwvers) 1642 return; 1643 1644 bios_version = fwvers & 0xffffU; 1645 ec_version = (fwvers >> 16) & 0xffffU; 1646 1647 /* note that unknown versions are set to 0x0000 and we use that */ 1648 if ((bios_version > thinkpad_id.bios_release) || 1649 (ec_version > thinkpad_id.ec_release && 1650 ec_version != TPACPI_MATCH_ANY_VERSION)) { 1651 /* 1652 * The changelogs would let us track down the exact 1653 * reason, but it is just too much of a pain to track 1654 * it. We only list BIOSes that are either really 1655 * broken, or really stable to begin with, so it is 1656 * best if the user upgrades the firmware anyway. 1657 */ 1658 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1659 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1660 } 1661 } 1662 tpacpi_is_fw_known(void)1663 static bool __init tpacpi_is_fw_known(void) 1664 { 1665 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1666 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1667 } 1668 1669 /**************************************************************************** 1670 **************************************************************************** 1671 * 1672 * Subdrivers 1673 * 1674 **************************************************************************** 1675 ****************************************************************************/ 1676 1677 /************************************************************************* 1678 * thinkpad-acpi metadata subdriver 1679 */ 1680 thinkpad_acpi_driver_read(struct seq_file * m)1681 static int thinkpad_acpi_driver_read(struct seq_file *m) 1682 { 1683 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1684 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1685 return 0; 1686 } 1687 1688 static struct ibm_struct thinkpad_acpi_driver_data = { 1689 .name = "driver", 1690 .read = thinkpad_acpi_driver_read, 1691 }; 1692 1693 /************************************************************************* 1694 * Hotkey subdriver 1695 */ 1696 1697 /* 1698 * ThinkPad firmware event model 1699 * 1700 * The ThinkPad firmware has two main event interfaces: normal ACPI 1701 * notifications (which follow the ACPI standard), and a private event 1702 * interface. 1703 * 1704 * The private event interface also issues events for the hotkeys. As 1705 * the driver gained features, the event handling code ended up being 1706 * built around the hotkey subdriver. This will need to be refactored 1707 * to a more formal event API eventually. 1708 * 1709 * Some "hotkeys" are actually supposed to be used as event reports, 1710 * such as "brightness has changed", "volume has changed", depending on 1711 * the ThinkPad model and how the firmware is operating. 1712 * 1713 * Unlike other classes, hotkey-class events have mask/unmask control on 1714 * non-ancient firmware. However, how it behaves changes a lot with the 1715 * firmware model and version. 1716 */ 1717 1718 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1719 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1720 TP_ACPI_HOTKEYSCAN_FNF2, 1721 TP_ACPI_HOTKEYSCAN_FNF3, 1722 TP_ACPI_HOTKEYSCAN_FNF4, 1723 TP_ACPI_HOTKEYSCAN_FNF5, 1724 TP_ACPI_HOTKEYSCAN_FNF6, 1725 TP_ACPI_HOTKEYSCAN_FNF7, 1726 TP_ACPI_HOTKEYSCAN_FNF8, 1727 TP_ACPI_HOTKEYSCAN_FNF9, 1728 TP_ACPI_HOTKEYSCAN_FNF10, 1729 TP_ACPI_HOTKEYSCAN_FNF11, 1730 TP_ACPI_HOTKEYSCAN_FNF12, 1731 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1732 TP_ACPI_HOTKEYSCAN_FNINSERT, 1733 TP_ACPI_HOTKEYSCAN_FNDELETE, 1734 TP_ACPI_HOTKEYSCAN_FNHOME, 1735 TP_ACPI_HOTKEYSCAN_FNEND, 1736 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1737 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1738 TP_ACPI_HOTKEYSCAN_FNSPACE, 1739 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1740 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1741 TP_ACPI_HOTKEYSCAN_MUTE, 1742 TP_ACPI_HOTKEYSCAN_THINKPAD, 1743 TP_ACPI_HOTKEYSCAN_UNK1, 1744 TP_ACPI_HOTKEYSCAN_UNK2, 1745 TP_ACPI_HOTKEYSCAN_UNK3, 1746 TP_ACPI_HOTKEYSCAN_UNK4, 1747 TP_ACPI_HOTKEYSCAN_UNK5, 1748 TP_ACPI_HOTKEYSCAN_UNK6, 1749 TP_ACPI_HOTKEYSCAN_UNK7, 1750 TP_ACPI_HOTKEYSCAN_UNK8, 1751 1752 /* Adaptive keyboard keycodes */ 1753 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1754 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1755 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1756 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1757 TP_ACPI_HOTKEYSCAN_CLOUD, 1758 TP_ACPI_HOTKEYSCAN_UNK9, 1759 TP_ACPI_HOTKEYSCAN_VOICE, 1760 TP_ACPI_HOTKEYSCAN_UNK10, 1761 TP_ACPI_HOTKEYSCAN_GESTURES, 1762 TP_ACPI_HOTKEYSCAN_UNK11, 1763 TP_ACPI_HOTKEYSCAN_UNK12, 1764 TP_ACPI_HOTKEYSCAN_UNK13, 1765 TP_ACPI_HOTKEYSCAN_CONFIG, 1766 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1767 TP_ACPI_HOTKEYSCAN_RELOAD, 1768 TP_ACPI_HOTKEYSCAN_BACK, 1769 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1770 TP_ACPI_HOTKEYSCAN_MIC_UP, 1771 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1772 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1773 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1774 1775 /* Lenovo extended keymap, starting at 0x1300 */ 1776 TP_ACPI_HOTKEYSCAN_EXTENDED_START, 1777 /* first new observed key (star, favorites) is 0x1311 */ 1778 TP_ACPI_HOTKEYSCAN_STAR = 69, 1779 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1780 TP_ACPI_HOTKEYSCAN_CALCULATOR, 1781 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1782 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1783 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ 1784 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, 1785 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, 1786 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, 1787 1788 /* Hotkey keymap size */ 1789 TPACPI_HOTKEY_MAP_LEN 1790 }; 1791 1792 enum { /* Keys/events available through NVRAM polling */ 1793 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1794 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1795 }; 1796 1797 enum { /* Positions of some of the keys in hotkey masks */ 1798 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1799 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1800 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1801 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1802 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1803 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1804 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1805 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1806 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1807 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1808 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1809 }; 1810 1811 enum { /* NVRAM to ACPI HKEY group map */ 1812 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1813 TP_ACPI_HKEY_ZOOM_MASK | 1814 TP_ACPI_HKEY_DISPSWTCH_MASK | 1815 TP_ACPI_HKEY_HIBERNATE_MASK, 1816 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1817 TP_ACPI_HKEY_BRGHTDWN_MASK, 1818 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1819 TP_ACPI_HKEY_VOLDWN_MASK | 1820 TP_ACPI_HKEY_MUTE_MASK, 1821 }; 1822 1823 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1824 struct tp_nvram_state { 1825 u16 thinkpad_toggle:1; 1826 u16 zoom_toggle:1; 1827 u16 display_toggle:1; 1828 u16 thinklight_toggle:1; 1829 u16 hibernate_toggle:1; 1830 u16 displayexp_toggle:1; 1831 u16 display_state:1; 1832 u16 brightness_toggle:1; 1833 u16 volume_toggle:1; 1834 u16 mute:1; 1835 1836 u8 brightness_level; 1837 u8 volume_level; 1838 }; 1839 1840 /* kthread for the hotkey poller */ 1841 static struct task_struct *tpacpi_hotkey_task; 1842 1843 /* 1844 * Acquire mutex to write poller control variables as an 1845 * atomic block. 1846 * 1847 * Increment hotkey_config_change when changing them if you 1848 * want the kthread to forget old state. 1849 * 1850 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1851 */ 1852 static struct mutex hotkey_thread_data_mutex; 1853 static unsigned int hotkey_config_change; 1854 1855 /* 1856 * hotkey poller control variables 1857 * 1858 * Must be atomic or readers will also need to acquire mutex 1859 * 1860 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1861 * should be used only when the changes need to be taken as 1862 * a block, OR when one needs to force the kthread to forget 1863 * old state. 1864 */ 1865 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 1866 static unsigned int hotkey_poll_freq = 10; /* Hz */ 1867 1868 #define HOTKEY_CONFIG_CRITICAL_START \ 1869 do { \ 1870 mutex_lock(&hotkey_thread_data_mutex); \ 1871 hotkey_config_change++; \ 1872 } while (0); 1873 #define HOTKEY_CONFIG_CRITICAL_END \ 1874 mutex_unlock(&hotkey_thread_data_mutex); 1875 1876 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1877 1878 #define hotkey_source_mask 0U 1879 #define HOTKEY_CONFIG_CRITICAL_START 1880 #define HOTKEY_CONFIG_CRITICAL_END 1881 1882 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1883 1884 static struct mutex hotkey_mutex; 1885 1886 static enum { /* Reasons for waking up */ 1887 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 1888 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 1889 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 1890 } hotkey_wakeup_reason; 1891 1892 static int hotkey_autosleep_ack; 1893 1894 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 1895 static u32 hotkey_all_mask; /* all events supported in fw */ 1896 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 1897 static u32 hotkey_reserved_mask; /* events better left disabled */ 1898 static u32 hotkey_driver_mask; /* events needed by the driver */ 1899 static u32 hotkey_user_mask; /* events visible to userspace */ 1900 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 1901 1902 static u16 *hotkey_keycode_map; 1903 1904 static void tpacpi_driver_event(const unsigned int hkey_event); 1905 static void hotkey_driver_event(const unsigned int scancode); 1906 static void hotkey_poll_setup(const bool may_warn); 1907 1908 /* HKEY.MHKG() return bits */ 1909 #define TP_HOTKEY_TABLET_MASK (1 << 3) 1910 enum { 1911 TP_ACPI_MULTI_MODE_INVALID = 0, 1912 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 1913 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 1914 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 1915 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 1916 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 1917 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 1918 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 1919 }; 1920 1921 enum { 1922 /* The following modes are considered tablet mode for the purpose of 1923 * reporting the status to userspace. i.e. in all these modes it makes 1924 * sense to disable the laptop input devices such as touchpad and 1925 * keyboard. 1926 */ 1927 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 1928 TP_ACPI_MULTI_MODE_STAND | 1929 TP_ACPI_MULTI_MODE_TENT | 1930 TP_ACPI_MULTI_MODE_STAND_TENT, 1931 }; 1932 hotkey_get_wlsw(void)1933 static int hotkey_get_wlsw(void) 1934 { 1935 int status; 1936 1937 if (!tp_features.hotkey_wlsw) 1938 return -ENODEV; 1939 1940 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1941 if (dbg_wlswemul) 1942 return (tpacpi_wlsw_emulstate) ? 1943 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1944 #endif 1945 1946 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 1947 return -EIO; 1948 1949 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1950 } 1951 hotkey_gmms_get_tablet_mode(int s,int * has_tablet_mode)1952 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 1953 { 1954 int type = (s >> 16) & 0xffff; 1955 int value = s & 0xffff; 1956 int mode = TP_ACPI_MULTI_MODE_INVALID; 1957 int valid_modes = 0; 1958 1959 if (has_tablet_mode) 1960 *has_tablet_mode = 0; 1961 1962 switch (type) { 1963 case 1: 1964 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1965 TP_ACPI_MULTI_MODE_TABLET | 1966 TP_ACPI_MULTI_MODE_STAND_TENT; 1967 break; 1968 case 2: 1969 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1970 TP_ACPI_MULTI_MODE_FLAT | 1971 TP_ACPI_MULTI_MODE_TABLET | 1972 TP_ACPI_MULTI_MODE_STAND | 1973 TP_ACPI_MULTI_MODE_TENT; 1974 break; 1975 case 3: 1976 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1977 TP_ACPI_MULTI_MODE_FLAT; 1978 break; 1979 case 4: 1980 case 5: 1981 /* In mode 4, FLAT is not specified as a valid mode. However, 1982 * it can be seen at least on the X1 Yoga 2nd Generation. 1983 */ 1984 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1985 TP_ACPI_MULTI_MODE_FLAT | 1986 TP_ACPI_MULTI_MODE_TABLET | 1987 TP_ACPI_MULTI_MODE_STAND | 1988 TP_ACPI_MULTI_MODE_TENT; 1989 break; 1990 default: 1991 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 1992 type, value, TPACPI_MAIL); 1993 return 0; 1994 } 1995 1996 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 1997 *has_tablet_mode = 1; 1998 1999 switch (value) { 2000 case 1: 2001 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2002 break; 2003 case 2: 2004 mode = TP_ACPI_MULTI_MODE_FLAT; 2005 break; 2006 case 3: 2007 mode = TP_ACPI_MULTI_MODE_TABLET; 2008 break; 2009 case 4: 2010 if (type == 1) 2011 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2012 else 2013 mode = TP_ACPI_MULTI_MODE_STAND; 2014 break; 2015 case 5: 2016 mode = TP_ACPI_MULTI_MODE_TENT; 2017 break; 2018 default: 2019 if (type == 5 && value == 0xffff) { 2020 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2021 return 0; 2022 } 2023 } 2024 2025 if (!(mode & valid_modes)) { 2026 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2027 value, type, TPACPI_MAIL); 2028 return 0; 2029 } 2030 2031 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2032 } 2033 hotkey_get_tablet_mode(int * status)2034 static int hotkey_get_tablet_mode(int *status) 2035 { 2036 int s; 2037 2038 switch (tp_features.hotkey_tablet) { 2039 case TP_HOTKEY_TABLET_USES_MHKG: 2040 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2041 return -EIO; 2042 2043 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2044 break; 2045 case TP_HOTKEY_TABLET_USES_GMMS: 2046 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2047 return -EIO; 2048 2049 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2050 break; 2051 default: 2052 break; 2053 } 2054 2055 return 0; 2056 } 2057 2058 /* 2059 * Reads current event mask from firmware, and updates 2060 * hotkey_acpi_mask accordingly. Also resets any bits 2061 * from hotkey_user_mask that are unavailable to be 2062 * delivered (shadow requirement of the userspace ABI). 2063 */ hotkey_mask_get(void)2064 static int hotkey_mask_get(void) 2065 { 2066 lockdep_assert_held(&hotkey_mutex); 2067 2068 if (tp_features.hotkey_mask) { 2069 u32 m = 0; 2070 2071 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2072 return -EIO; 2073 2074 hotkey_acpi_mask = m; 2075 } else { 2076 /* no mask support doesn't mean no event support... */ 2077 hotkey_acpi_mask = hotkey_all_mask; 2078 } 2079 2080 /* sync userspace-visible mask */ 2081 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2082 2083 return 0; 2084 } 2085 hotkey_mask_warn_incomplete_mask(void)2086 static void hotkey_mask_warn_incomplete_mask(void) 2087 { 2088 /* log only what the user can fix... */ 2089 const u32 wantedmask = hotkey_driver_mask & 2090 ~(hotkey_acpi_mask | hotkey_source_mask) & 2091 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2092 2093 if (wantedmask) 2094 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2095 } 2096 2097 /* 2098 * Set the firmware mask when supported 2099 * 2100 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2101 * 2102 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2103 */ hotkey_mask_set(u32 mask)2104 static int hotkey_mask_set(u32 mask) 2105 { 2106 int i; 2107 int rc = 0; 2108 2109 const u32 fwmask = mask & ~hotkey_source_mask; 2110 2111 lockdep_assert_held(&hotkey_mutex); 2112 2113 if (tp_features.hotkey_mask) { 2114 for (i = 0; i < 32; i++) { 2115 if (!acpi_evalf(hkey_handle, 2116 NULL, "MHKM", "vdd", i + 1, 2117 !!(mask & (1 << i)))) { 2118 rc = -EIO; 2119 break; 2120 } 2121 } 2122 } 2123 2124 /* 2125 * We *must* make an inconditional call to hotkey_mask_get to 2126 * refresh hotkey_acpi_mask and update hotkey_user_mask 2127 * 2128 * Take the opportunity to also log when we cannot _enable_ 2129 * a given event. 2130 */ 2131 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2132 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2133 fwmask, hotkey_acpi_mask); 2134 } 2135 2136 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2137 hotkey_mask_warn_incomplete_mask(); 2138 2139 return rc; 2140 } 2141 2142 /* 2143 * Sets hotkey_user_mask and tries to set the firmware mask 2144 */ hotkey_user_mask_set(const u32 mask)2145 static int hotkey_user_mask_set(const u32 mask) 2146 { 2147 int rc; 2148 2149 lockdep_assert_held(&hotkey_mutex); 2150 2151 /* Give people a chance to notice they are doing something that 2152 * is bound to go boom on their users sooner or later */ 2153 if (!tp_warned.hotkey_mask_ff && 2154 (mask == 0xffff || mask == 0xffffff || 2155 mask == 0xffffffff)) { 2156 tp_warned.hotkey_mask_ff = 1; 2157 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2158 mask); 2159 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2160 } 2161 2162 /* Try to enable what the user asked for, plus whatever we need. 2163 * this syncs everything but won't enable bits in hotkey_user_mask */ 2164 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2165 2166 /* Enable the available bits in hotkey_user_mask */ 2167 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2168 2169 return rc; 2170 } 2171 2172 /* 2173 * Sets the driver hotkey mask. 2174 * 2175 * Can be called even if the hotkey subdriver is inactive 2176 */ tpacpi_hotkey_driver_mask_set(const u32 mask)2177 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2178 { 2179 int rc; 2180 2181 /* Do the right thing if hotkey_init has not been called yet */ 2182 if (!tp_features.hotkey) { 2183 hotkey_driver_mask = mask; 2184 return 0; 2185 } 2186 2187 mutex_lock(&hotkey_mutex); 2188 2189 HOTKEY_CONFIG_CRITICAL_START 2190 hotkey_driver_mask = mask; 2191 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2192 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2193 #endif 2194 HOTKEY_CONFIG_CRITICAL_END 2195 2196 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2197 ~hotkey_source_mask); 2198 hotkey_poll_setup(true); 2199 2200 mutex_unlock(&hotkey_mutex); 2201 2202 return rc; 2203 } 2204 hotkey_status_get(int * status)2205 static int hotkey_status_get(int *status) 2206 { 2207 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2208 return -EIO; 2209 2210 return 0; 2211 } 2212 hotkey_status_set(bool enable)2213 static int hotkey_status_set(bool enable) 2214 { 2215 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2216 return -EIO; 2217 2218 return 0; 2219 } 2220 tpacpi_input_send_tabletsw(void)2221 static void tpacpi_input_send_tabletsw(void) 2222 { 2223 int state; 2224 2225 if (tp_features.hotkey_tablet && 2226 !hotkey_get_tablet_mode(&state)) { 2227 mutex_lock(&tpacpi_inputdev_send_mutex); 2228 2229 input_report_switch(tpacpi_inputdev, 2230 SW_TABLET_MODE, !!state); 2231 input_sync(tpacpi_inputdev); 2232 2233 mutex_unlock(&tpacpi_inputdev_send_mutex); 2234 } 2235 } 2236 2237 /* Do NOT call without validating scancode first */ tpacpi_input_send_key(const unsigned int scancode)2238 static void tpacpi_input_send_key(const unsigned int scancode) 2239 { 2240 const unsigned int keycode = hotkey_keycode_map[scancode]; 2241 2242 if (keycode != KEY_RESERVED) { 2243 mutex_lock(&tpacpi_inputdev_send_mutex); 2244 2245 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2246 input_report_key(tpacpi_inputdev, keycode, 1); 2247 input_sync(tpacpi_inputdev); 2248 2249 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2250 input_report_key(tpacpi_inputdev, keycode, 0); 2251 input_sync(tpacpi_inputdev); 2252 2253 mutex_unlock(&tpacpi_inputdev_send_mutex); 2254 } 2255 } 2256 2257 /* Do NOT call without validating scancode first */ tpacpi_input_send_key_masked(const unsigned int scancode)2258 static void tpacpi_input_send_key_masked(const unsigned int scancode) 2259 { 2260 hotkey_driver_event(scancode); 2261 if (hotkey_user_mask & (1 << scancode)) 2262 tpacpi_input_send_key(scancode); 2263 } 2264 2265 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2266 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2267 2268 /* Do NOT call without validating scancode first */ tpacpi_hotkey_send_key(unsigned int scancode)2269 static void tpacpi_hotkey_send_key(unsigned int scancode) 2270 { 2271 tpacpi_input_send_key_masked(scancode); 2272 } 2273 hotkey_read_nvram(struct tp_nvram_state * n,const u32 m)2274 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2275 { 2276 u8 d; 2277 2278 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2279 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2280 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2281 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2282 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2283 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2284 } 2285 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2286 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2287 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2288 } 2289 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2290 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2291 n->displayexp_toggle = 2292 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2293 } 2294 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2295 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2296 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2297 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2298 n->brightness_toggle = 2299 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2300 } 2301 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2302 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2303 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2304 >> TP_NVRAM_POS_LEVEL_VOLUME; 2305 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2306 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2307 } 2308 } 2309 2310 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2311 do { \ 2312 if ((event_mask & (1 << __scancode)) && \ 2313 oldn->__member != newn->__member) \ 2314 tpacpi_hotkey_send_key(__scancode); \ 2315 } while (0) 2316 2317 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2318 do { \ 2319 if (event_mask & (1 << __scancode)) \ 2320 tpacpi_hotkey_send_key(__scancode); \ 2321 } while (0) 2322 issue_volchange(const unsigned int oldvol,const unsigned int newvol,const u32 event_mask)2323 static void issue_volchange(const unsigned int oldvol, 2324 const unsigned int newvol, 2325 const u32 event_mask) 2326 { 2327 unsigned int i = oldvol; 2328 2329 while (i > newvol) { 2330 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2331 i--; 2332 } 2333 while (i < newvol) { 2334 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2335 i++; 2336 } 2337 } 2338 issue_brightnesschange(const unsigned int oldbrt,const unsigned int newbrt,const u32 event_mask)2339 static void issue_brightnesschange(const unsigned int oldbrt, 2340 const unsigned int newbrt, 2341 const u32 event_mask) 2342 { 2343 unsigned int i = oldbrt; 2344 2345 while (i > newbrt) { 2346 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2347 i--; 2348 } 2349 while (i < newbrt) { 2350 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2351 i++; 2352 } 2353 } 2354 hotkey_compare_and_issue_event(struct tp_nvram_state * oldn,struct tp_nvram_state * newn,const u32 event_mask)2355 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2356 struct tp_nvram_state *newn, 2357 const u32 event_mask) 2358 { 2359 2360 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2361 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2362 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2363 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2364 2365 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2366 2367 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2368 2369 /* 2370 * Handle volume 2371 * 2372 * This code is supposed to duplicate the IBM firmware behaviour: 2373 * - Pressing MUTE issues mute hotkey message, even when already mute 2374 * - Pressing Volume up/down issues volume up/down hotkey messages, 2375 * even when already at maximum or minimum volume 2376 * - The act of unmuting issues volume up/down notification, 2377 * depending which key was used to unmute 2378 * 2379 * We are constrained to what the NVRAM can tell us, which is not much 2380 * and certainly not enough if more than one volume hotkey was pressed 2381 * since the last poll cycle. 2382 * 2383 * Just to make our life interesting, some newer Lenovo ThinkPads have 2384 * bugs in the BIOS and may fail to update volume_toggle properly. 2385 */ 2386 if (newn->mute) { 2387 /* muted */ 2388 if (!oldn->mute || 2389 oldn->volume_toggle != newn->volume_toggle || 2390 oldn->volume_level != newn->volume_level) { 2391 /* recently muted, or repeated mute keypress, or 2392 * multiple presses ending in mute */ 2393 issue_volchange(oldn->volume_level, newn->volume_level, 2394 event_mask); 2395 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2396 } 2397 } else { 2398 /* unmute */ 2399 if (oldn->mute) { 2400 /* recently unmuted, issue 'unmute' keypress */ 2401 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2402 } 2403 if (oldn->volume_level != newn->volume_level) { 2404 issue_volchange(oldn->volume_level, newn->volume_level, 2405 event_mask); 2406 } else if (oldn->volume_toggle != newn->volume_toggle) { 2407 /* repeated vol up/down keypress at end of scale ? */ 2408 if (newn->volume_level == 0) 2409 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2410 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2411 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2412 } 2413 } 2414 2415 /* handle brightness */ 2416 if (oldn->brightness_level != newn->brightness_level) { 2417 issue_brightnesschange(oldn->brightness_level, 2418 newn->brightness_level, event_mask); 2419 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2420 /* repeated key presses that didn't change state */ 2421 if (newn->brightness_level == 0) 2422 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2423 else if (newn->brightness_level >= bright_maxlvl 2424 && !tp_features.bright_unkfw) 2425 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2426 } 2427 2428 #undef TPACPI_COMPARE_KEY 2429 #undef TPACPI_MAY_SEND_KEY 2430 } 2431 2432 /* 2433 * Polling driver 2434 * 2435 * We track all events in hotkey_source_mask all the time, since 2436 * most of them are edge-based. We only issue those requested by 2437 * hotkey_user_mask or hotkey_driver_mask, though. 2438 */ hotkey_kthread(void * data)2439 static int hotkey_kthread(void *data) 2440 { 2441 struct tp_nvram_state s[2] = { 0 }; 2442 u32 poll_mask, event_mask; 2443 unsigned int si, so; 2444 unsigned long t; 2445 unsigned int change_detector; 2446 unsigned int poll_freq; 2447 bool was_frozen; 2448 2449 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2450 goto exit; 2451 2452 set_freezable(); 2453 2454 so = 0; 2455 si = 1; 2456 t = 0; 2457 2458 /* Initial state for compares */ 2459 mutex_lock(&hotkey_thread_data_mutex); 2460 change_detector = hotkey_config_change; 2461 poll_mask = hotkey_source_mask; 2462 event_mask = hotkey_source_mask & 2463 (hotkey_driver_mask | hotkey_user_mask); 2464 poll_freq = hotkey_poll_freq; 2465 mutex_unlock(&hotkey_thread_data_mutex); 2466 hotkey_read_nvram(&s[so], poll_mask); 2467 2468 while (!kthread_should_stop()) { 2469 if (t == 0) { 2470 if (likely(poll_freq)) 2471 t = 1000/poll_freq; 2472 else 2473 t = 100; /* should never happen... */ 2474 } 2475 t = msleep_interruptible(t); 2476 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2477 break; 2478 2479 if (t > 0 && !was_frozen) 2480 continue; 2481 2482 mutex_lock(&hotkey_thread_data_mutex); 2483 if (was_frozen || hotkey_config_change != change_detector) { 2484 /* forget old state on thaw or config change */ 2485 si = so; 2486 t = 0; 2487 change_detector = hotkey_config_change; 2488 } 2489 poll_mask = hotkey_source_mask; 2490 event_mask = hotkey_source_mask & 2491 (hotkey_driver_mask | hotkey_user_mask); 2492 poll_freq = hotkey_poll_freq; 2493 mutex_unlock(&hotkey_thread_data_mutex); 2494 2495 if (likely(poll_mask)) { 2496 hotkey_read_nvram(&s[si], poll_mask); 2497 if (likely(si != so)) { 2498 hotkey_compare_and_issue_event(&s[so], &s[si], 2499 event_mask); 2500 } 2501 } 2502 2503 so = si; 2504 si ^= 1; 2505 } 2506 2507 exit: 2508 return 0; 2509 } 2510 hotkey_poll_stop_sync(void)2511 static void hotkey_poll_stop_sync(void) 2512 { 2513 lockdep_assert_held(&hotkey_mutex); 2514 2515 if (tpacpi_hotkey_task) { 2516 kthread_stop(tpacpi_hotkey_task); 2517 tpacpi_hotkey_task = NULL; 2518 } 2519 } 2520 hotkey_poll_setup(const bool may_warn)2521 static void hotkey_poll_setup(const bool may_warn) 2522 { 2523 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2524 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2525 2526 lockdep_assert_held(&hotkey_mutex); 2527 2528 if (hotkey_poll_freq > 0 && 2529 (poll_driver_mask || 2530 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2531 if (!tpacpi_hotkey_task) { 2532 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2533 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2534 if (IS_ERR(tpacpi_hotkey_task)) { 2535 tpacpi_hotkey_task = NULL; 2536 pr_err("could not create kernel thread for hotkey polling\n"); 2537 } 2538 } 2539 } else { 2540 hotkey_poll_stop_sync(); 2541 if (may_warn && (poll_driver_mask || poll_user_mask) && 2542 hotkey_poll_freq == 0) { 2543 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2544 poll_user_mask, poll_driver_mask); 2545 } 2546 } 2547 } 2548 hotkey_poll_setup_safe(const bool may_warn)2549 static void hotkey_poll_setup_safe(const bool may_warn) 2550 { 2551 mutex_lock(&hotkey_mutex); 2552 hotkey_poll_setup(may_warn); 2553 mutex_unlock(&hotkey_mutex); 2554 } 2555 hotkey_poll_set_freq(unsigned int freq)2556 static void hotkey_poll_set_freq(unsigned int freq) 2557 { 2558 lockdep_assert_held(&hotkey_mutex); 2559 2560 if (!freq) 2561 hotkey_poll_stop_sync(); 2562 2563 hotkey_poll_freq = freq; 2564 } 2565 2566 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2567 hotkey_poll_setup(const bool __unused)2568 static void hotkey_poll_setup(const bool __unused) 2569 { 2570 } 2571 hotkey_poll_setup_safe(const bool __unused)2572 static void hotkey_poll_setup_safe(const bool __unused) 2573 { 2574 } 2575 2576 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2577 hotkey_inputdev_open(struct input_dev * dev)2578 static int hotkey_inputdev_open(struct input_dev *dev) 2579 { 2580 switch (tpacpi_lifecycle) { 2581 case TPACPI_LIFE_INIT: 2582 case TPACPI_LIFE_RUNNING: 2583 hotkey_poll_setup_safe(false); 2584 return 0; 2585 case TPACPI_LIFE_EXITING: 2586 return -EBUSY; 2587 } 2588 2589 /* Should only happen if tpacpi_lifecycle is corrupt */ 2590 BUG(); 2591 return -EBUSY; 2592 } 2593 hotkey_inputdev_close(struct input_dev * dev)2594 static void hotkey_inputdev_close(struct input_dev *dev) 2595 { 2596 /* disable hotkey polling when possible */ 2597 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2598 !(hotkey_source_mask & hotkey_driver_mask)) 2599 hotkey_poll_setup_safe(false); 2600 } 2601 2602 /* sysfs hotkey enable ------------------------------------------------- */ hotkey_enable_show(struct device * dev,struct device_attribute * attr,char * buf)2603 static ssize_t hotkey_enable_show(struct device *dev, 2604 struct device_attribute *attr, 2605 char *buf) 2606 { 2607 int res, status; 2608 2609 printk_deprecated_attribute("hotkey_enable", 2610 "Hotkey reporting is always enabled"); 2611 2612 res = hotkey_status_get(&status); 2613 if (res) 2614 return res; 2615 2616 return sysfs_emit(buf, "%d\n", status); 2617 } 2618 hotkey_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2619 static ssize_t hotkey_enable_store(struct device *dev, 2620 struct device_attribute *attr, 2621 const char *buf, size_t count) 2622 { 2623 unsigned long t; 2624 2625 printk_deprecated_attribute("hotkey_enable", 2626 "Hotkeys can be disabled through hotkey_mask"); 2627 2628 if (parse_strtoul(buf, 1, &t)) 2629 return -EINVAL; 2630 2631 if (t == 0) 2632 return -EPERM; 2633 2634 return count; 2635 } 2636 2637 static DEVICE_ATTR_RW(hotkey_enable); 2638 2639 /* sysfs hotkey mask --------------------------------------------------- */ hotkey_mask_show(struct device * dev,struct device_attribute * attr,char * buf)2640 static ssize_t hotkey_mask_show(struct device *dev, 2641 struct device_attribute *attr, 2642 char *buf) 2643 { 2644 return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask); 2645 } 2646 hotkey_mask_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2647 static ssize_t hotkey_mask_store(struct device *dev, 2648 struct device_attribute *attr, 2649 const char *buf, size_t count) 2650 { 2651 unsigned long t; 2652 int res; 2653 2654 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2655 return -EINVAL; 2656 2657 if (mutex_lock_killable(&hotkey_mutex)) 2658 return -ERESTARTSYS; 2659 2660 res = hotkey_user_mask_set(t); 2661 2662 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2663 hotkey_poll_setup(true); 2664 #endif 2665 2666 mutex_unlock(&hotkey_mutex); 2667 2668 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2669 2670 return (res) ? res : count; 2671 } 2672 2673 static DEVICE_ATTR_RW(hotkey_mask); 2674 2675 /* sysfs hotkey bios_enabled ------------------------------------------- */ hotkey_bios_enabled_show(struct device * dev,struct device_attribute * attr,char * buf)2676 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2677 struct device_attribute *attr, 2678 char *buf) 2679 { 2680 return sprintf(buf, "0\n"); 2681 } 2682 2683 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2684 2685 /* sysfs hotkey bios_mask ---------------------------------------------- */ hotkey_bios_mask_show(struct device * dev,struct device_attribute * attr,char * buf)2686 static ssize_t hotkey_bios_mask_show(struct device *dev, 2687 struct device_attribute *attr, 2688 char *buf) 2689 { 2690 printk_deprecated_attribute("hotkey_bios_mask", 2691 "This attribute is useless."); 2692 return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask); 2693 } 2694 2695 static DEVICE_ATTR_RO(hotkey_bios_mask); 2696 2697 /* sysfs hotkey all_mask ----------------------------------------------- */ hotkey_all_mask_show(struct device * dev,struct device_attribute * attr,char * buf)2698 static ssize_t hotkey_all_mask_show(struct device *dev, 2699 struct device_attribute *attr, 2700 char *buf) 2701 { 2702 return sysfs_emit(buf, "0x%08x\n", 2703 hotkey_all_mask | hotkey_source_mask); 2704 } 2705 2706 static DEVICE_ATTR_RO(hotkey_all_mask); 2707 2708 /* sysfs hotkey all_mask ----------------------------------------------- */ hotkey_adaptive_all_mask_show(struct device * dev,struct device_attribute * attr,char * buf)2709 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2710 struct device_attribute *attr, 2711 char *buf) 2712 { 2713 return sysfs_emit(buf, "0x%08x\n", 2714 hotkey_adaptive_all_mask | hotkey_source_mask); 2715 } 2716 2717 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2718 2719 /* sysfs hotkey recommended_mask --------------------------------------- */ hotkey_recommended_mask_show(struct device * dev,struct device_attribute * attr,char * buf)2720 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2721 struct device_attribute *attr, 2722 char *buf) 2723 { 2724 return sysfs_emit(buf, "0x%08x\n", 2725 (hotkey_all_mask | hotkey_source_mask) 2726 & ~hotkey_reserved_mask); 2727 } 2728 2729 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2730 2731 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2732 2733 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ hotkey_source_mask_show(struct device * dev,struct device_attribute * attr,char * buf)2734 static ssize_t hotkey_source_mask_show(struct device *dev, 2735 struct device_attribute *attr, 2736 char *buf) 2737 { 2738 return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask); 2739 } 2740 hotkey_source_mask_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2741 static ssize_t hotkey_source_mask_store(struct device *dev, 2742 struct device_attribute *attr, 2743 const char *buf, size_t count) 2744 { 2745 unsigned long t; 2746 u32 r_ev; 2747 int rc; 2748 2749 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2750 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2751 return -EINVAL; 2752 2753 if (mutex_lock_killable(&hotkey_mutex)) 2754 return -ERESTARTSYS; 2755 2756 HOTKEY_CONFIG_CRITICAL_START 2757 hotkey_source_mask = t; 2758 HOTKEY_CONFIG_CRITICAL_END 2759 2760 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2761 ~hotkey_source_mask); 2762 hotkey_poll_setup(true); 2763 2764 /* check if events needed by the driver got disabled */ 2765 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2766 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2767 2768 mutex_unlock(&hotkey_mutex); 2769 2770 if (rc < 0) 2771 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2772 2773 if (r_ev) 2774 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2775 r_ev); 2776 2777 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2778 2779 return (rc < 0) ? rc : count; 2780 } 2781 2782 static DEVICE_ATTR_RW(hotkey_source_mask); 2783 2784 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ hotkey_poll_freq_show(struct device * dev,struct device_attribute * attr,char * buf)2785 static ssize_t hotkey_poll_freq_show(struct device *dev, 2786 struct device_attribute *attr, 2787 char *buf) 2788 { 2789 return sysfs_emit(buf, "%d\n", hotkey_poll_freq); 2790 } 2791 hotkey_poll_freq_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2792 static ssize_t hotkey_poll_freq_store(struct device *dev, 2793 struct device_attribute *attr, 2794 const char *buf, size_t count) 2795 { 2796 unsigned long t; 2797 2798 if (parse_strtoul(buf, 25, &t)) 2799 return -EINVAL; 2800 2801 if (mutex_lock_killable(&hotkey_mutex)) 2802 return -ERESTARTSYS; 2803 2804 hotkey_poll_set_freq(t); 2805 hotkey_poll_setup(true); 2806 2807 mutex_unlock(&hotkey_mutex); 2808 2809 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2810 2811 return count; 2812 } 2813 2814 static DEVICE_ATTR_RW(hotkey_poll_freq); 2815 2816 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2817 2818 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ hotkey_radio_sw_show(struct device * dev,struct device_attribute * attr,char * buf)2819 static ssize_t hotkey_radio_sw_show(struct device *dev, 2820 struct device_attribute *attr, 2821 char *buf) 2822 { 2823 int res; 2824 res = hotkey_get_wlsw(); 2825 if (res < 0) 2826 return res; 2827 2828 /* Opportunistic update */ 2829 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2830 2831 return sysfs_emit(buf, "%d\n", 2832 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2833 } 2834 2835 static DEVICE_ATTR_RO(hotkey_radio_sw); 2836 hotkey_radio_sw_notify_change(void)2837 static void hotkey_radio_sw_notify_change(void) 2838 { 2839 if (tp_features.hotkey_wlsw) 2840 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2841 "hotkey_radio_sw"); 2842 } 2843 2844 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ hotkey_tablet_mode_show(struct device * dev,struct device_attribute * attr,char * buf)2845 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2846 struct device_attribute *attr, 2847 char *buf) 2848 { 2849 int res, s; 2850 res = hotkey_get_tablet_mode(&s); 2851 if (res < 0) 2852 return res; 2853 2854 return sysfs_emit(buf, "%d\n", !!s); 2855 } 2856 2857 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2858 hotkey_tablet_mode_notify_change(void)2859 static void hotkey_tablet_mode_notify_change(void) 2860 { 2861 if (tp_features.hotkey_tablet) 2862 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2863 "hotkey_tablet_mode"); 2864 } 2865 2866 /* sysfs wakeup reason (pollable) -------------------------------------- */ hotkey_wakeup_reason_show(struct device * dev,struct device_attribute * attr,char * buf)2867 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 2868 struct device_attribute *attr, 2869 char *buf) 2870 { 2871 return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason); 2872 } 2873 2874 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 2875 hotkey_wakeup_reason_notify_change(void)2876 static void hotkey_wakeup_reason_notify_change(void) 2877 { 2878 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2879 "wakeup_reason"); 2880 } 2881 2882 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ hotkey_wakeup_hotunplug_complete_show(struct device * dev,struct device_attribute * attr,char * buf)2883 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 2884 struct device_attribute *attr, 2885 char *buf) 2886 { 2887 return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack); 2888 } 2889 2890 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 2891 hotkey_wakeup_hotunplug_complete_show, NULL); 2892 hotkey_wakeup_hotunplug_complete_notify_change(void)2893 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 2894 { 2895 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2896 "wakeup_hotunplug_complete"); 2897 } 2898 2899 /* sysfs adaptive kbd mode --------------------------------------------- */ 2900 2901 static int adaptive_keyboard_get_mode(void); 2902 static int adaptive_keyboard_set_mode(int new_mode); 2903 2904 enum ADAPTIVE_KEY_MODE { 2905 HOME_MODE, 2906 WEB_BROWSER_MODE, 2907 WEB_CONFERENCE_MODE, 2908 FUNCTION_MODE, 2909 LAYFLAT_MODE 2910 }; 2911 adaptive_kbd_mode_show(struct device * dev,struct device_attribute * attr,char * buf)2912 static ssize_t adaptive_kbd_mode_show(struct device *dev, 2913 struct device_attribute *attr, 2914 char *buf) 2915 { 2916 int current_mode; 2917 2918 current_mode = adaptive_keyboard_get_mode(); 2919 if (current_mode < 0) 2920 return current_mode; 2921 2922 return sysfs_emit(buf, "%d\n", current_mode); 2923 } 2924 adaptive_kbd_mode_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2925 static ssize_t adaptive_kbd_mode_store(struct device *dev, 2926 struct device_attribute *attr, 2927 const char *buf, size_t count) 2928 { 2929 unsigned long t; 2930 int res; 2931 2932 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 2933 return -EINVAL; 2934 2935 res = adaptive_keyboard_set_mode(t); 2936 return (res < 0) ? res : count; 2937 } 2938 2939 static DEVICE_ATTR_RW(adaptive_kbd_mode); 2940 2941 static struct attribute *adaptive_kbd_attributes[] = { 2942 &dev_attr_adaptive_kbd_mode.attr, 2943 NULL 2944 }; 2945 hadaptive_kbd_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)2946 static umode_t hadaptive_kbd_attr_is_visible(struct kobject *kobj, 2947 struct attribute *attr, int n) 2948 { 2949 return tp_features.has_adaptive_kbd ? attr->mode : 0; 2950 } 2951 2952 static const struct attribute_group adaptive_kbd_attr_group = { 2953 .is_visible = hadaptive_kbd_attr_is_visible, 2954 .attrs = adaptive_kbd_attributes, 2955 }; 2956 2957 /* --------------------------------------------------------------------- */ 2958 2959 static struct attribute *hotkey_attributes[] = { 2960 &dev_attr_hotkey_enable.attr, 2961 &dev_attr_hotkey_bios_enabled.attr, 2962 &dev_attr_hotkey_bios_mask.attr, 2963 &dev_attr_wakeup_reason.attr, 2964 &dev_attr_wakeup_hotunplug_complete.attr, 2965 &dev_attr_hotkey_mask.attr, 2966 &dev_attr_hotkey_all_mask.attr, 2967 &dev_attr_hotkey_adaptive_all_mask.attr, 2968 &dev_attr_hotkey_recommended_mask.attr, 2969 &dev_attr_hotkey_tablet_mode.attr, 2970 &dev_attr_hotkey_radio_sw.attr, 2971 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2972 &dev_attr_hotkey_source_mask.attr, 2973 &dev_attr_hotkey_poll_freq.attr, 2974 #endif 2975 NULL 2976 }; 2977 hotkey_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)2978 static umode_t hotkey_attr_is_visible(struct kobject *kobj, 2979 struct attribute *attr, int n) 2980 { 2981 if (attr == &dev_attr_hotkey_tablet_mode.attr) { 2982 if (!tp_features.hotkey_tablet) 2983 return 0; 2984 } else if (attr == &dev_attr_hotkey_radio_sw.attr) { 2985 if (!tp_features.hotkey_wlsw) 2986 return 0; 2987 } 2988 2989 return attr->mode; 2990 } 2991 2992 static const struct attribute_group hotkey_attr_group = { 2993 .is_visible = hotkey_attr_is_visible, 2994 .attrs = hotkey_attributes, 2995 }; 2996 2997 /* 2998 * Sync both the hw and sw blocking state of all switches 2999 */ tpacpi_send_radiosw_update(void)3000 static void tpacpi_send_radiosw_update(void) 3001 { 3002 int wlsw; 3003 3004 /* 3005 * We must sync all rfkill controllers *before* issuing any 3006 * rfkill input events, or we will race the rfkill core input 3007 * handler. 3008 * 3009 * tpacpi_inputdev_send_mutex works as a synchronization point 3010 * for the above. 3011 * 3012 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3013 */ 3014 3015 wlsw = hotkey_get_wlsw(); 3016 3017 /* Sync hw blocking state first if it is hw-blocked */ 3018 if (wlsw == TPACPI_RFK_RADIO_OFF) 3019 tpacpi_rfk_update_hwblock_state(true); 3020 3021 /* Sync hw blocking state last if it is hw-unblocked */ 3022 if (wlsw == TPACPI_RFK_RADIO_ON) 3023 tpacpi_rfk_update_hwblock_state(false); 3024 3025 /* Issue rfkill input event for WLSW switch */ 3026 if (!(wlsw < 0)) { 3027 mutex_lock(&tpacpi_inputdev_send_mutex); 3028 3029 input_report_switch(tpacpi_inputdev, 3030 SW_RFKILL_ALL, (wlsw > 0)); 3031 input_sync(tpacpi_inputdev); 3032 3033 mutex_unlock(&tpacpi_inputdev_send_mutex); 3034 } 3035 3036 /* 3037 * this can be unconditional, as we will poll state again 3038 * if userspace uses the notify to read data 3039 */ 3040 hotkey_radio_sw_notify_change(); 3041 } 3042 hotkey_exit(void)3043 static void hotkey_exit(void) 3044 { 3045 mutex_lock(&hotkey_mutex); 3046 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3047 hotkey_poll_stop_sync(); 3048 #endif 3049 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3050 "restoring original HKEY status and mask\n"); 3051 /* yes, there is a bitwise or below, we want the 3052 * functions to be called even if one of them fail */ 3053 if (((tp_features.hotkey_mask && 3054 hotkey_mask_set(hotkey_orig_mask)) | 3055 hotkey_status_set(false)) != 0) 3056 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3057 3058 mutex_unlock(&hotkey_mutex); 3059 } 3060 hotkey_unmap(const unsigned int scancode)3061 static void __init hotkey_unmap(const unsigned int scancode) 3062 { 3063 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3064 clear_bit(hotkey_keycode_map[scancode], 3065 tpacpi_inputdev->keybit); 3066 hotkey_keycode_map[scancode] = KEY_RESERVED; 3067 } 3068 } 3069 3070 /* 3071 * HKEY quirks: 3072 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3073 */ 3074 3075 #define TPACPI_HK_Q_INIMASK 0x0001 3076 3077 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3078 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3079 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3080 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3081 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3082 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3083 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3084 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3085 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3086 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3087 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3088 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3089 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3090 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3091 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3092 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3093 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3094 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3095 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3096 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3097 }; 3098 3099 typedef u16 tpacpi_keymap_entry_t; 3100 typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; 3101 hotkey_init_tablet_mode(void)3102 static int hotkey_init_tablet_mode(void) 3103 { 3104 int in_tablet_mode = 0, res; 3105 char *type = NULL; 3106 3107 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3108 int has_tablet_mode; 3109 3110 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3111 &has_tablet_mode); 3112 /* 3113 * The Yoga 11e series has 2 accelerometers described by a 3114 * BOSC0200 ACPI node. This setup relies on a Windows service 3115 * which calls special ACPI methods on this node to report 3116 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver 3117 * does not support this, so skip the hotkey on these models. 3118 */ 3119 if (has_tablet_mode && !dual_accel_detect()) 3120 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3121 type = "GMMS"; 3122 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3123 /* For X41t, X60t, X61t Tablets... */ 3124 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3125 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3126 type = "MHKG"; 3127 } 3128 3129 if (!tp_features.hotkey_tablet) 3130 return 0; 3131 3132 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3133 type, in_tablet_mode ? "tablet" : "laptop"); 3134 3135 return in_tablet_mode; 3136 } 3137 hotkey_init(struct ibm_init_struct * iibm)3138 static int __init hotkey_init(struct ibm_init_struct *iibm) 3139 { 3140 /* Requirements for changing the default keymaps: 3141 * 3142 * 1. Many of the keys are mapped to KEY_RESERVED for very 3143 * good reasons. Do not change them unless you have deep 3144 * knowledge on the IBM and Lenovo ThinkPad firmware for 3145 * the various ThinkPad models. The driver behaves 3146 * differently for KEY_RESERVED: such keys have their 3147 * hot key mask *unset* in mask_recommended, and also 3148 * in the initial hot key mask programmed into the 3149 * firmware at driver load time, which means the firm- 3150 * ware may react very differently if you change them to 3151 * something else; 3152 * 3153 * 2. You must be subscribed to the linux-thinkpad and 3154 * ibm-acpi-devel mailing lists, and you should read the 3155 * list archives since 2007 if you want to change the 3156 * keymaps. This requirement exists so that you will 3157 * know the past history of problems with the thinkpad- 3158 * acpi driver keymaps, and also that you will be 3159 * listening to any bug reports; 3160 * 3161 * 3. Do not send thinkpad-acpi specific patches directly to 3162 * for merging, *ever*. Send them to the linux-acpi 3163 * mailinglist for comments. Merging is to be done only 3164 * through acpi-test and the ACPI maintainer. 3165 * 3166 * If the above is too much to ask, don't change the keymap. 3167 * Ask the thinkpad-acpi maintainer to do it, instead. 3168 */ 3169 3170 enum keymap_index { 3171 TPACPI_KEYMAP_IBM_GENERIC = 0, 3172 TPACPI_KEYMAP_LENOVO_GENERIC, 3173 }; 3174 3175 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3176 /* Generic keymap for IBM ThinkPads */ 3177 [TPACPI_KEYMAP_IBM_GENERIC] = { 3178 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3179 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3180 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3181 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3182 3183 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3184 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3185 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3186 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3187 3188 /* brightness: firmware always reacts to them */ 3189 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3190 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3191 3192 /* Thinklight: firmware always react to it */ 3193 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3194 3195 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3196 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3197 3198 /* Volume: firmware always react to it and reprograms 3199 * the built-in *extra* mixer. Never map it to control 3200 * another mixer by default. */ 3201 KEY_RESERVED, /* 0x14: VOLUME UP */ 3202 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3203 KEY_RESERVED, /* 0x16: MUTE */ 3204 3205 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3206 3207 /* (assignments unknown, please report if found) */ 3208 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3209 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3210 3211 /* No assignments, only used for Adaptive keyboards. */ 3212 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3213 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3214 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3215 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3216 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3217 3218 /* No assignment, used for newer Lenovo models */ 3219 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3220 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3221 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3222 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3223 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3224 KEY_UNKNOWN, KEY_UNKNOWN 3225 3226 }, 3227 3228 /* Generic keymap for Lenovo ThinkPads */ 3229 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3230 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3231 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3232 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3233 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3234 3235 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3236 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3237 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3238 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3239 3240 /* These should be enabled --only-- when ACPI video 3241 * is disabled (i.e. in "vendor" mode), and are handled 3242 * in a special way by the init code */ 3243 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3244 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3245 3246 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3247 3248 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3249 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3250 3251 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3252 * react to it and reprograms the built-in *extra* mixer. 3253 * Never map it to control another mixer by default. 3254 * 3255 * T60?, T61, R60?, R61: firmware and EC tries to send 3256 * these over the regular keyboard, so these are no-ops, 3257 * but there are still weird bugs re. MUTE, so do not 3258 * change unless you get test reports from all Lenovo 3259 * models. May cause the BIOS to interfere with the 3260 * HDA mixer. 3261 */ 3262 KEY_RESERVED, /* 0x14: VOLUME UP */ 3263 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3264 KEY_RESERVED, /* 0x16: MUTE */ 3265 3266 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3267 3268 /* (assignments unknown, please report if found) */ 3269 KEY_UNKNOWN, KEY_UNKNOWN, 3270 3271 /* 3272 * The mic mute button only sends 0x1a. It does not 3273 * automatically mute the mic or change the mute light. 3274 */ 3275 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3276 3277 /* (assignments unknown, please report if found) */ 3278 KEY_UNKNOWN, 3279 3280 /* Extra keys in use since the X240 / T440 / T540 */ 3281 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3282 3283 /* 3284 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3285 * The first item in this list is the Mute button which is 3286 * emitted with 0x103 through 3287 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3288 * symbol is held. 3289 * We'll need to offset those by 0x20. 3290 */ 3291 KEY_RESERVED, /* Mute held, 0x103 */ 3292 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3293 KEY_RESERVED, /* Clipping tool */ 3294 KEY_RESERVED, /* Cloud */ 3295 KEY_RESERVED, 3296 KEY_VOICECOMMAND, /* Voice */ 3297 KEY_RESERVED, 3298 KEY_RESERVED, /* Gestures */ 3299 KEY_RESERVED, 3300 KEY_RESERVED, 3301 KEY_RESERVED, 3302 KEY_CONFIG, /* Settings */ 3303 KEY_RESERVED, /* New tab */ 3304 KEY_REFRESH, /* Reload */ 3305 KEY_BACK, /* Back */ 3306 KEY_RESERVED, /* Microphone down */ 3307 KEY_RESERVED, /* Microphone up */ 3308 KEY_RESERVED, /* Microphone cancellation */ 3309 KEY_RESERVED, /* Camera mode */ 3310 KEY_RESERVED, /* Rotate display, 0x116 */ 3311 3312 /* 3313 * These are found in 2017 models (e.g. T470s, X270). 3314 * The lowest known value is 0x311, which according to 3315 * the manual should launch a user defined favorite 3316 * application. 3317 * 3318 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3319 * corresponding to 0x34. 3320 */ 3321 3322 /* (assignments unknown, please report if found) */ 3323 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3324 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3325 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3326 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3327 KEY_UNKNOWN, 3328 3329 KEY_BOOKMARKS, /* Favorite app, 0x311 */ 3330 KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */ 3331 KEY_CALC, /* Calculator (above numpad, P52) */ 3332 KEY_BLUETOOTH, /* Bluetooth */ 3333 KEY_KEYBOARD, /* Keyboard, 0x315 */ 3334 KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */ 3335 KEY_NOTIFICATION_CENTER, /* Notification Center */ 3336 KEY_PICKUP_PHONE, /* Answer incoming call */ 3337 KEY_HANGUP_PHONE, /* Decline incoming call */ 3338 }, 3339 }; 3340 3341 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3342 /* Generic maps (fallback) */ 3343 { 3344 .vendor = PCI_VENDOR_ID_IBM, 3345 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3346 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3347 }, 3348 { 3349 .vendor = PCI_VENDOR_ID_LENOVO, 3350 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3351 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3352 }, 3353 }; 3354 3355 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3356 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3357 3358 int res, i; 3359 int status; 3360 int hkeyv; 3361 bool radiosw_state = false; 3362 bool tabletsw_state = false; 3363 3364 unsigned long quirks; 3365 unsigned long keymap_id; 3366 3367 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3368 "initializing hotkey subdriver\n"); 3369 3370 BUG_ON(!tpacpi_inputdev); 3371 BUG_ON(tpacpi_inputdev->open != NULL || 3372 tpacpi_inputdev->close != NULL); 3373 3374 TPACPI_ACPIHANDLE_INIT(hkey); 3375 mutex_init(&hotkey_mutex); 3376 3377 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3378 mutex_init(&hotkey_thread_data_mutex); 3379 #endif 3380 3381 /* hotkey not supported on 570 */ 3382 tp_features.hotkey = hkey_handle != NULL; 3383 3384 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3385 "hotkeys are %s\n", 3386 str_supported(tp_features.hotkey)); 3387 3388 if (!tp_features.hotkey) 3389 return -ENODEV; 3390 3391 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3392 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3393 3394 tpacpi_disable_brightness_delay(); 3395 3396 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3397 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3398 for HKEY interface version 0x100 */ 3399 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3400 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3401 "firmware HKEY interface version: 0x%x\n", 3402 hkeyv); 3403 3404 switch (hkeyv >> 8) { 3405 case 1: 3406 /* 3407 * MHKV 0x100 in A31, R40, R40e, 3408 * T4x, X31, and later 3409 */ 3410 3411 /* Paranoia check AND init hotkey_all_mask */ 3412 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3413 "MHKA", "qd")) { 3414 pr_err("missing MHKA handler, please report this to %s\n", 3415 TPACPI_MAIL); 3416 /* Fallback: pre-init for FN+F3,F4,F12 */ 3417 hotkey_all_mask = 0x080cU; 3418 } else { 3419 tp_features.hotkey_mask = 1; 3420 } 3421 break; 3422 3423 case 2: 3424 /* 3425 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3426 */ 3427 3428 /* Paranoia check AND init hotkey_all_mask */ 3429 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3430 "MHKA", "dd", 1)) { 3431 pr_err("missing MHKA handler, please report this to %s\n", 3432 TPACPI_MAIL); 3433 /* Fallback: pre-init for FN+F3,F4,F12 */ 3434 hotkey_all_mask = 0x080cU; 3435 } else { 3436 tp_features.hotkey_mask = 1; 3437 } 3438 3439 /* 3440 * Check if we have an adaptive keyboard, like on the 3441 * Lenovo Carbon X1 2014 (2nd Gen). 3442 */ 3443 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3444 "MHKA", "dd", 2)) { 3445 if (hotkey_adaptive_all_mask != 0) 3446 tp_features.has_adaptive_kbd = true; 3447 } else { 3448 tp_features.has_adaptive_kbd = false; 3449 hotkey_adaptive_all_mask = 0x0U; 3450 } 3451 break; 3452 3453 default: 3454 pr_err("unknown version of the HKEY interface: 0x%x\n", 3455 hkeyv); 3456 pr_err("please report this to %s\n", TPACPI_MAIL); 3457 break; 3458 } 3459 } 3460 3461 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3462 "hotkey masks are %s\n", 3463 str_supported(tp_features.hotkey_mask)); 3464 3465 /* Init hotkey_all_mask if not initialized yet */ 3466 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3467 (quirks & TPACPI_HK_Q_INIMASK)) 3468 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3469 3470 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3471 if (tp_features.hotkey_mask) { 3472 /* hotkey_source_mask *must* be zero for 3473 * the first hotkey_mask_get to return hotkey_orig_mask */ 3474 mutex_lock(&hotkey_mutex); 3475 res = hotkey_mask_get(); 3476 mutex_unlock(&hotkey_mutex); 3477 if (res) 3478 return res; 3479 3480 hotkey_orig_mask = hotkey_acpi_mask; 3481 } else { 3482 hotkey_orig_mask = hotkey_all_mask; 3483 hotkey_acpi_mask = hotkey_all_mask; 3484 } 3485 3486 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3487 if (dbg_wlswemul) { 3488 tp_features.hotkey_wlsw = 1; 3489 radiosw_state = !!tpacpi_wlsw_emulstate; 3490 pr_info("radio switch emulation enabled\n"); 3491 } else 3492 #endif 3493 /* Not all thinkpads have a hardware radio switch */ 3494 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3495 tp_features.hotkey_wlsw = 1; 3496 radiosw_state = !!status; 3497 pr_info("radio switch found; radios are %s\n", str_enabled_disabled(status & BIT(0))); 3498 } 3499 3500 tabletsw_state = hotkey_init_tablet_mode(); 3501 3502 /* Set up key map */ 3503 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3504 ARRAY_SIZE(tpacpi_keymap_qtable)); 3505 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3506 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3507 "using keymap number %lu\n", keymap_id); 3508 3509 hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id], 3510 TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); 3511 if (!hotkey_keycode_map) { 3512 pr_err("failed to allocate memory for key map\n"); 3513 return -ENOMEM; 3514 } 3515 3516 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3517 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3518 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3519 tpacpi_inputdev->keycode = hotkey_keycode_map; 3520 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3521 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3522 input_set_capability(tpacpi_inputdev, EV_KEY, 3523 hotkey_keycode_map[i]); 3524 } else { 3525 if (i < sizeof(hotkey_reserved_mask)*8) 3526 hotkey_reserved_mask |= 1 << i; 3527 } 3528 } 3529 3530 if (tp_features.hotkey_wlsw) { 3531 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3532 input_report_switch(tpacpi_inputdev, 3533 SW_RFKILL_ALL, radiosw_state); 3534 } 3535 if (tp_features.hotkey_tablet) { 3536 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3537 input_report_switch(tpacpi_inputdev, 3538 SW_TABLET_MODE, tabletsw_state); 3539 } 3540 3541 /* Do not issue duplicate brightness change events to 3542 * userspace. tpacpi_detect_brightness_capabilities() must have 3543 * been called before this point */ 3544 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3545 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3546 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3547 3548 /* Disable brightness up/down on Lenovo thinkpads when 3549 * ACPI is handling them, otherwise it is plain impossible 3550 * for userspace to do something even remotely sane */ 3551 hotkey_reserved_mask |= 3552 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3553 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3554 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3555 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3556 } 3557 3558 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3559 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3560 & ~hotkey_all_mask 3561 & ~hotkey_reserved_mask; 3562 3563 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3564 "hotkey source mask 0x%08x, polling freq %u\n", 3565 hotkey_source_mask, hotkey_poll_freq); 3566 #endif 3567 3568 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3569 "enabling firmware HKEY event interface...\n"); 3570 res = hotkey_status_set(true); 3571 if (res) { 3572 hotkey_exit(); 3573 return res; 3574 } 3575 mutex_lock(&hotkey_mutex); 3576 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3577 | hotkey_driver_mask) 3578 & ~hotkey_source_mask); 3579 mutex_unlock(&hotkey_mutex); 3580 if (res < 0 && res != -ENXIO) { 3581 hotkey_exit(); 3582 return res; 3583 } 3584 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3585 & ~hotkey_reserved_mask; 3586 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3587 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3588 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3589 3590 tpacpi_inputdev->open = &hotkey_inputdev_open; 3591 tpacpi_inputdev->close = &hotkey_inputdev_close; 3592 3593 hotkey_poll_setup_safe(true); 3594 3595 return 0; 3596 } 3597 3598 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3599 * mode, Web conference mode, Function mode and Lay-flat mode. 3600 * We support Home mode and Function mode currently. 3601 * 3602 * Will consider support rest of modes in future. 3603 * 3604 */ 3605 static const int adaptive_keyboard_modes[] = { 3606 HOME_MODE, 3607 /* WEB_BROWSER_MODE = 2, 3608 WEB_CONFERENCE_MODE = 3, */ 3609 FUNCTION_MODE 3610 }; 3611 3612 #define DFR_CHANGE_ROW 0x101 3613 #define DFR_SHOW_QUICKVIEW_ROW 0x102 3614 #define FIRST_ADAPTIVE_KEY 0x103 3615 3616 /* press Fn key a while second, it will switch to Function Mode. Then 3617 * release Fn key, previous mode be restored. 3618 */ 3619 static bool adaptive_keyboard_mode_is_saved; 3620 static int adaptive_keyboard_prev_mode; 3621 adaptive_keyboard_get_mode(void)3622 static int adaptive_keyboard_get_mode(void) 3623 { 3624 int mode = 0; 3625 3626 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3627 pr_err("Cannot read adaptive keyboard mode\n"); 3628 return -EIO; 3629 } 3630 3631 return mode; 3632 } 3633 adaptive_keyboard_set_mode(int new_mode)3634 static int adaptive_keyboard_set_mode(int new_mode) 3635 { 3636 if (new_mode < 0 || 3637 new_mode > LAYFLAT_MODE) 3638 return -EINVAL; 3639 3640 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3641 pr_err("Cannot set adaptive keyboard mode\n"); 3642 return -EIO; 3643 } 3644 3645 return 0; 3646 } 3647 adaptive_keyboard_get_next_mode(int mode)3648 static int adaptive_keyboard_get_next_mode(int mode) 3649 { 3650 size_t i; 3651 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3652 3653 for (i = 0; i <= max_mode; i++) { 3654 if (adaptive_keyboard_modes[i] == mode) 3655 break; 3656 } 3657 3658 if (i >= max_mode) 3659 i = 0; 3660 else 3661 i++; 3662 3663 return adaptive_keyboard_modes[i]; 3664 } 3665 adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)3666 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3667 { 3668 int current_mode = 0; 3669 int new_mode = 0; 3670 int keycode; 3671 3672 switch (scancode) { 3673 case DFR_CHANGE_ROW: 3674 if (adaptive_keyboard_mode_is_saved) { 3675 new_mode = adaptive_keyboard_prev_mode; 3676 adaptive_keyboard_mode_is_saved = false; 3677 } else { 3678 current_mode = adaptive_keyboard_get_mode(); 3679 if (current_mode < 0) 3680 return false; 3681 new_mode = adaptive_keyboard_get_next_mode( 3682 current_mode); 3683 } 3684 3685 if (adaptive_keyboard_set_mode(new_mode) < 0) 3686 return false; 3687 3688 return true; 3689 3690 case DFR_SHOW_QUICKVIEW_ROW: 3691 current_mode = adaptive_keyboard_get_mode(); 3692 if (current_mode < 0) 3693 return false; 3694 3695 adaptive_keyboard_prev_mode = current_mode; 3696 adaptive_keyboard_mode_is_saved = true; 3697 3698 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3699 return false; 3700 return true; 3701 3702 default: 3703 if (scancode < FIRST_ADAPTIVE_KEY || 3704 scancode >= FIRST_ADAPTIVE_KEY + 3705 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3706 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3707 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3708 scancode); 3709 return false; 3710 } 3711 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3712 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3713 if (keycode != KEY_RESERVED) { 3714 mutex_lock(&tpacpi_inputdev_send_mutex); 3715 3716 input_report_key(tpacpi_inputdev, keycode, 1); 3717 input_sync(tpacpi_inputdev); 3718 3719 input_report_key(tpacpi_inputdev, keycode, 0); 3720 input_sync(tpacpi_inputdev); 3721 3722 mutex_unlock(&tpacpi_inputdev_send_mutex); 3723 } 3724 return true; 3725 } 3726 } 3727 hotkey_notify_extended_hotkey(const u32 hkey)3728 static bool hotkey_notify_extended_hotkey(const u32 hkey) 3729 { 3730 unsigned int scancode; 3731 3732 switch (hkey) { 3733 case TP_HKEY_EV_PRIVACYGUARD_TOGGLE: 3734 case TP_HKEY_EV_AMT_TOGGLE: 3735 tpacpi_driver_event(hkey); 3736 return true; 3737 } 3738 3739 /* Extended keycodes start at 0x300 and our offset into the map 3740 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3741 * will be positive, but might not be in the correct range. 3742 */ 3743 scancode = (hkey & 0xfff) - (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3744 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3745 scancode < TPACPI_HOTKEY_MAP_LEN) { 3746 tpacpi_input_send_key(scancode); 3747 return true; 3748 } 3749 3750 return false; 3751 } 3752 hotkey_notify_hotkey(const u32 hkey,bool * send_acpi_ev,bool * ignore_acpi_ev)3753 static bool hotkey_notify_hotkey(const u32 hkey, 3754 bool *send_acpi_ev, 3755 bool *ignore_acpi_ev) 3756 { 3757 /* 0x1000-0x1FFF: key presses */ 3758 unsigned int scancode = hkey & 0xfff; 3759 *send_acpi_ev = true; 3760 *ignore_acpi_ev = false; 3761 3762 /* 3763 * Original events are in the 0x10XX range, the adaptive keyboard 3764 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3765 * models, additional keys are emitted through 0x13XX. 3766 */ 3767 switch ((hkey >> 8) & 0xf) { 3768 case 0: 3769 if (scancode > 0 && 3770 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3771 /* HKEY event 0x1001 is scancode 0x00 */ 3772 scancode--; 3773 if (!(hotkey_source_mask & (1 << scancode))) { 3774 tpacpi_input_send_key_masked(scancode); 3775 *send_acpi_ev = false; 3776 } else { 3777 *ignore_acpi_ev = true; 3778 } 3779 return true; 3780 } 3781 break; 3782 3783 case 1: 3784 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3785 3786 case 3: 3787 return hotkey_notify_extended_hotkey(hkey); 3788 } 3789 3790 return false; 3791 } 3792 hotkey_notify_wakeup(const u32 hkey,bool * send_acpi_ev,bool * ignore_acpi_ev)3793 static bool hotkey_notify_wakeup(const u32 hkey, 3794 bool *send_acpi_ev, 3795 bool *ignore_acpi_ev) 3796 { 3797 /* 0x2000-0x2FFF: Wakeup reason */ 3798 *send_acpi_ev = true; 3799 *ignore_acpi_ev = false; 3800 3801 switch (hkey) { 3802 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3803 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3804 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3805 *ignore_acpi_ev = true; 3806 break; 3807 3808 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3809 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3810 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3811 *ignore_acpi_ev = true; 3812 break; 3813 3814 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3815 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3816 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3817 /* how to auto-heal: */ 3818 /* 2313: woke up from S3, go to S4/S5 */ 3819 /* 2413: woke up from S4, go to S5 */ 3820 break; 3821 3822 default: 3823 return false; 3824 } 3825 3826 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3827 pr_info("woke up due to a hot-unplug request...\n"); 3828 hotkey_wakeup_reason_notify_change(); 3829 } 3830 return true; 3831 } 3832 hotkey_notify_dockevent(const u32 hkey,bool * send_acpi_ev,bool * ignore_acpi_ev)3833 static bool hotkey_notify_dockevent(const u32 hkey, 3834 bool *send_acpi_ev, 3835 bool *ignore_acpi_ev) 3836 { 3837 /* 0x4000-0x4FFF: dock-related events */ 3838 *send_acpi_ev = true; 3839 *ignore_acpi_ev = false; 3840 3841 switch (hkey) { 3842 case TP_HKEY_EV_UNDOCK_ACK: 3843 /* ACPI undock operation completed after wakeup */ 3844 hotkey_autosleep_ack = 1; 3845 pr_info("undocked\n"); 3846 hotkey_wakeup_hotunplug_complete_notify_change(); 3847 return true; 3848 3849 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3850 pr_info("docked into hotplug port replicator\n"); 3851 return true; 3852 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3853 pr_info("undocked from hotplug port replicator\n"); 3854 return true; 3855 3856 /* 3857 * Deliberately ignore attaching and detaching the keybord cover to avoid 3858 * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events 3859 * to userspace. 3860 * 3861 * Please refer to the following thread for more information and a preliminary 3862 * implementation using the GTOP ("Get Tablet OPtions") interface that could be 3863 * extended to other attachment options of the ThinkPad X1 Tablet series, such as 3864 * the Pico cartridge dock module: 3865 * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/ 3866 */ 3867 case TP_HKEY_EV_KBD_COVER_ATTACH: 3868 case TP_HKEY_EV_KBD_COVER_DETACH: 3869 *send_acpi_ev = false; 3870 *ignore_acpi_ev = true; 3871 return true; 3872 3873 default: 3874 return false; 3875 } 3876 } 3877 hotkey_notify_usrevent(const u32 hkey,bool * send_acpi_ev,bool * ignore_acpi_ev)3878 static bool hotkey_notify_usrevent(const u32 hkey, 3879 bool *send_acpi_ev, 3880 bool *ignore_acpi_ev) 3881 { 3882 /* 0x5000-0x5FFF: human interface helpers */ 3883 *send_acpi_ev = true; 3884 *ignore_acpi_ev = false; 3885 3886 switch (hkey) { 3887 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 3888 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 3889 return true; 3890 3891 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 3892 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 3893 tpacpi_input_send_tabletsw(); 3894 hotkey_tablet_mode_notify_change(); 3895 *send_acpi_ev = false; 3896 return true; 3897 3898 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 3899 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 3900 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 3901 /* do not propagate these events */ 3902 *ignore_acpi_ev = true; 3903 return true; 3904 3905 default: 3906 return false; 3907 } 3908 } 3909 3910 static void thermal_dump_all_sensors(void); 3911 static void palmsensor_refresh(void); 3912 hotkey_notify_6xxx(const u32 hkey,bool * send_acpi_ev,bool * ignore_acpi_ev)3913 static bool hotkey_notify_6xxx(const u32 hkey, 3914 bool *send_acpi_ev, 3915 bool *ignore_acpi_ev) 3916 { 3917 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 3918 *send_acpi_ev = true; 3919 *ignore_acpi_ev = false; 3920 3921 switch (hkey) { 3922 case TP_HKEY_EV_THM_TABLE_CHANGED: 3923 pr_debug("EC reports: Thermal Table has changed\n"); 3924 /* recommended action: do nothing, we don't have 3925 * Lenovo ATM information */ 3926 return true; 3927 case TP_HKEY_EV_THM_CSM_COMPLETED: 3928 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 3929 /* Thermal event - pass on to event handler */ 3930 tpacpi_driver_event(hkey); 3931 return true; 3932 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 3933 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 3934 /* recommended action: do nothing, we don't have 3935 * Lenovo ATM information */ 3936 return true; 3937 case TP_HKEY_EV_ALARM_BAT_HOT: 3938 pr_crit("THERMAL ALARM: battery is too hot!\n"); 3939 /* recommended action: warn user through gui */ 3940 break; 3941 case TP_HKEY_EV_ALARM_BAT_XHOT: 3942 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 3943 /* recommended action: immediate sleep/hibernate */ 3944 break; 3945 case TP_HKEY_EV_ALARM_SENSOR_HOT: 3946 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 3947 /* recommended action: warn user through gui, that */ 3948 /* some internal component is too hot */ 3949 break; 3950 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 3951 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 3952 /* recommended action: immediate sleep/hibernate */ 3953 break; 3954 case TP_HKEY_EV_AC_CHANGED: 3955 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 3956 * AC status changed; can be triggered by plugging or 3957 * unplugging AC adapter, docking or undocking. */ 3958 3959 fallthrough; 3960 3961 case TP_HKEY_EV_KEY_NUMLOCK: 3962 case TP_HKEY_EV_KEY_FN: 3963 /* key press events, we just ignore them as long as the EC 3964 * is still reporting them in the normal keyboard stream */ 3965 *send_acpi_ev = false; 3966 *ignore_acpi_ev = true; 3967 return true; 3968 3969 case TP_HKEY_EV_KEY_FN_ESC: 3970 /* Get the media key status to force the status LED to update */ 3971 acpi_evalf(hkey_handle, NULL, "GMKS", "v"); 3972 *send_acpi_ev = false; 3973 *ignore_acpi_ev = true; 3974 return true; 3975 3976 case TP_HKEY_EV_TABLET_CHANGED: 3977 tpacpi_input_send_tabletsw(); 3978 hotkey_tablet_mode_notify_change(); 3979 *send_acpi_ev = false; 3980 return true; 3981 3982 case TP_HKEY_EV_PALM_DETECTED: 3983 case TP_HKEY_EV_PALM_UNDETECTED: 3984 /* palm detected - pass on to event handler */ 3985 palmsensor_refresh(); 3986 return true; 3987 3988 default: 3989 /* report simply as unknown, no sensor dump */ 3990 return false; 3991 } 3992 3993 thermal_dump_all_sensors(); 3994 return true; 3995 } 3996 hotkey_notify(struct ibm_struct * ibm,u32 event)3997 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 3998 { 3999 u32 hkey; 4000 bool send_acpi_ev; 4001 bool ignore_acpi_ev; 4002 bool known_ev; 4003 4004 if (event != 0x80) { 4005 pr_err("unknown HKEY notification event %d\n", event); 4006 /* forward it to userspace, maybe it knows how to handle it */ 4007 acpi_bus_generate_netlink_event( 4008 ibm->acpi->device->pnp.device_class, 4009 dev_name(&ibm->acpi->device->dev), 4010 event, 0); 4011 return; 4012 } 4013 4014 while (1) { 4015 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4016 pr_err("failed to retrieve HKEY event\n"); 4017 return; 4018 } 4019 4020 if (hkey == 0) { 4021 /* queue empty */ 4022 return; 4023 } 4024 4025 send_acpi_ev = true; 4026 ignore_acpi_ev = false; 4027 4028 switch (hkey >> 12) { 4029 case 1: 4030 /* 0x1000-0x1FFF: key presses */ 4031 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4032 &ignore_acpi_ev); 4033 break; 4034 case 2: 4035 /* 0x2000-0x2FFF: Wakeup reason */ 4036 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4037 &ignore_acpi_ev); 4038 break; 4039 case 3: 4040 /* 0x3000-0x3FFF: bay-related wakeups */ 4041 switch (hkey) { 4042 case TP_HKEY_EV_BAYEJ_ACK: 4043 hotkey_autosleep_ack = 1; 4044 pr_info("bay ejected\n"); 4045 hotkey_wakeup_hotunplug_complete_notify_change(); 4046 known_ev = true; 4047 break; 4048 case TP_HKEY_EV_OPTDRV_EJ: 4049 /* FIXME: kick libata if SATA link offline */ 4050 known_ev = true; 4051 break; 4052 default: 4053 known_ev = false; 4054 } 4055 break; 4056 case 4: 4057 /* 0x4000-0x4FFF: dock-related events */ 4058 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4059 &ignore_acpi_ev); 4060 break; 4061 case 5: 4062 /* 0x5000-0x5FFF: human interface helpers */ 4063 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4064 &ignore_acpi_ev); 4065 break; 4066 case 6: 4067 /* 0x6000-0x6FFF: thermal alarms/notices and 4068 * keyboard events */ 4069 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4070 &ignore_acpi_ev); 4071 break; 4072 case 7: 4073 /* 0x7000-0x7FFF: misc */ 4074 if (tp_features.hotkey_wlsw && 4075 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4076 tpacpi_send_radiosw_update(); 4077 send_acpi_ev = 0; 4078 known_ev = true; 4079 break; 4080 } 4081 fallthrough; /* to default */ 4082 default: 4083 known_ev = false; 4084 } 4085 if (!known_ev) { 4086 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4087 pr_notice("please report the conditions when this event happened to %s\n", 4088 TPACPI_MAIL); 4089 } 4090 4091 /* netlink events */ 4092 if (!ignore_acpi_ev && send_acpi_ev) { 4093 acpi_bus_generate_netlink_event( 4094 ibm->acpi->device->pnp.device_class, 4095 dev_name(&ibm->acpi->device->dev), 4096 event, hkey); 4097 } 4098 } 4099 } 4100 hotkey_suspend(void)4101 static void hotkey_suspend(void) 4102 { 4103 /* Do these on suspend, we get the events on early resume! */ 4104 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4105 hotkey_autosleep_ack = 0; 4106 4107 /* save previous mode of adaptive keyboard of X1 Carbon */ 4108 if (tp_features.has_adaptive_kbd) { 4109 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4110 "GTRW", "dd", 0)) { 4111 pr_err("Cannot read adaptive keyboard mode.\n"); 4112 } 4113 } 4114 } 4115 hotkey_resume(void)4116 static void hotkey_resume(void) 4117 { 4118 tpacpi_disable_brightness_delay(); 4119 4120 mutex_lock(&hotkey_mutex); 4121 if (hotkey_status_set(true) < 0 || 4122 hotkey_mask_set(hotkey_acpi_mask) < 0) 4123 pr_err("error while attempting to reset the event firmware interface\n"); 4124 mutex_unlock(&hotkey_mutex); 4125 4126 tpacpi_send_radiosw_update(); 4127 tpacpi_input_send_tabletsw(); 4128 hotkey_tablet_mode_notify_change(); 4129 hotkey_wakeup_reason_notify_change(); 4130 hotkey_wakeup_hotunplug_complete_notify_change(); 4131 hotkey_poll_setup_safe(false); 4132 4133 /* restore previous mode of adapive keyboard of X1 Carbon */ 4134 if (tp_features.has_adaptive_kbd) { 4135 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4136 adaptive_keyboard_prev_mode)) { 4137 pr_err("Cannot set adaptive keyboard mode.\n"); 4138 } 4139 } 4140 } 4141 4142 /* procfs -------------------------------------------------------------- */ hotkey_read(struct seq_file * m)4143 static int hotkey_read(struct seq_file *m) 4144 { 4145 int res, status; 4146 4147 if (!tp_features.hotkey) { 4148 seq_printf(m, "status:\t\tnot supported\n"); 4149 return 0; 4150 } 4151 4152 if (mutex_lock_killable(&hotkey_mutex)) 4153 return -ERESTARTSYS; 4154 res = hotkey_status_get(&status); 4155 if (!res) 4156 res = hotkey_mask_get(); 4157 mutex_unlock(&hotkey_mutex); 4158 if (res) 4159 return res; 4160 4161 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status & BIT(0))); 4162 if (hotkey_all_mask) { 4163 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4164 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4165 } else { 4166 seq_printf(m, "mask:\t\tnot supported\n"); 4167 seq_printf(m, "commands:\tenable, disable, reset\n"); 4168 } 4169 4170 return 0; 4171 } 4172 hotkey_enabledisable_warn(bool enable)4173 static void hotkey_enabledisable_warn(bool enable) 4174 { 4175 tpacpi_log_usertask("procfs hotkey enable/disable"); 4176 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4177 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4178 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4179 } 4180 hotkey_write(char * buf)4181 static int hotkey_write(char *buf) 4182 { 4183 int res; 4184 u32 mask; 4185 char *cmd; 4186 4187 if (!tp_features.hotkey) 4188 return -ENODEV; 4189 4190 if (mutex_lock_killable(&hotkey_mutex)) 4191 return -ERESTARTSYS; 4192 4193 mask = hotkey_user_mask; 4194 4195 res = 0; 4196 while ((cmd = strsep(&buf, ","))) { 4197 if (strstarts(cmd, "enable")) { 4198 hotkey_enabledisable_warn(1); 4199 } else if (strstarts(cmd, "disable")) { 4200 hotkey_enabledisable_warn(0); 4201 res = -EPERM; 4202 } else if (strstarts(cmd, "reset")) { 4203 mask = (hotkey_all_mask | hotkey_source_mask) 4204 & ~hotkey_reserved_mask; 4205 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4206 /* mask set */ 4207 } else if (sscanf(cmd, "%x", &mask) == 1) { 4208 /* mask set */ 4209 } else { 4210 res = -EINVAL; 4211 goto errexit; 4212 } 4213 } 4214 4215 if (!res) { 4216 tpacpi_disclose_usertask("procfs hotkey", 4217 "set mask to 0x%08x\n", mask); 4218 res = hotkey_user_mask_set(mask); 4219 } 4220 4221 errexit: 4222 mutex_unlock(&hotkey_mutex); 4223 return res; 4224 } 4225 4226 static const struct acpi_device_id ibm_htk_device_ids[] = { 4227 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4228 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4229 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4230 {"", 0}, 4231 }; 4232 4233 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4234 .hid = ibm_htk_device_ids, 4235 .notify = hotkey_notify, 4236 .handle = &hkey_handle, 4237 .type = ACPI_DEVICE_NOTIFY, 4238 }; 4239 4240 static struct ibm_struct hotkey_driver_data = { 4241 .name = "hotkey", 4242 .read = hotkey_read, 4243 .write = hotkey_write, 4244 .exit = hotkey_exit, 4245 .resume = hotkey_resume, 4246 .suspend = hotkey_suspend, 4247 .acpi = &ibm_hotkey_acpidriver, 4248 }; 4249 4250 /************************************************************************* 4251 * Bluetooth subdriver 4252 */ 4253 4254 enum { 4255 /* ACPI GBDC/SBDC bits */ 4256 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4257 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4258 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4259 0 = disable, 1 = enable */ 4260 }; 4261 4262 enum { 4263 /* ACPI \BLTH commands */ 4264 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4265 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4266 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4267 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4268 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4269 }; 4270 4271 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4272 bluetooth_get_status(void)4273 static int bluetooth_get_status(void) 4274 { 4275 int status; 4276 4277 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4278 if (dbg_bluetoothemul) 4279 return (tpacpi_bluetooth_emulstate) ? 4280 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4281 #endif 4282 4283 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4284 return -EIO; 4285 4286 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4287 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4288 } 4289 bluetooth_set_status(enum tpacpi_rfkill_state state)4290 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4291 { 4292 int status; 4293 4294 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s bluetooth\n", 4295 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4296 4297 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4298 if (dbg_bluetoothemul) { 4299 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4300 return 0; 4301 } 4302 #endif 4303 4304 if (state == TPACPI_RFK_RADIO_ON) 4305 status = TP_ACPI_BLUETOOTH_RADIOSSW 4306 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4307 else 4308 status = 0; 4309 4310 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4311 return -EIO; 4312 4313 return 0; 4314 } 4315 4316 /* sysfs bluetooth enable ---------------------------------------------- */ bluetooth_enable_show(struct device * dev,struct device_attribute * attr,char * buf)4317 static ssize_t bluetooth_enable_show(struct device *dev, 4318 struct device_attribute *attr, 4319 char *buf) 4320 { 4321 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4322 attr, buf); 4323 } 4324 bluetooth_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4325 static ssize_t bluetooth_enable_store(struct device *dev, 4326 struct device_attribute *attr, 4327 const char *buf, size_t count) 4328 { 4329 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4330 attr, buf, count); 4331 } 4332 4333 static DEVICE_ATTR_RW(bluetooth_enable); 4334 4335 /* --------------------------------------------------------------------- */ 4336 4337 static struct attribute *bluetooth_attributes[] = { 4338 &dev_attr_bluetooth_enable.attr, 4339 NULL 4340 }; 4341 bluetooth_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)4342 static umode_t bluetooth_attr_is_visible(struct kobject *kobj, 4343 struct attribute *attr, int n) 4344 { 4345 return tp_features.bluetooth ? attr->mode : 0; 4346 } 4347 4348 static const struct attribute_group bluetooth_attr_group = { 4349 .is_visible = bluetooth_attr_is_visible, 4350 .attrs = bluetooth_attributes, 4351 }; 4352 4353 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4354 .get_status = bluetooth_get_status, 4355 .set_status = bluetooth_set_status, 4356 }; 4357 bluetooth_shutdown(void)4358 static void bluetooth_shutdown(void) 4359 { 4360 /* Order firmware to save current state to NVRAM */ 4361 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4362 TP_ACPI_BLTH_SAVE_STATE)) 4363 pr_notice("failed to save bluetooth state to NVRAM\n"); 4364 else 4365 vdbg_printk(TPACPI_DBG_RFKILL, 4366 "bluetooth state saved to NVRAM\n"); 4367 } 4368 bluetooth_exit(void)4369 static void bluetooth_exit(void) 4370 { 4371 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4372 bluetooth_shutdown(); 4373 } 4374 4375 static const struct dmi_system_id fwbug_list[] __initconst = { 4376 { 4377 .ident = "ThinkPad E485", 4378 .driver_data = &quirk_btusb_bug, 4379 .matches = { 4380 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4381 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4382 }, 4383 }, 4384 { 4385 .ident = "ThinkPad E585", 4386 .driver_data = &quirk_btusb_bug, 4387 .matches = { 4388 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4389 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4390 }, 4391 }, 4392 { 4393 .ident = "ThinkPad A285 - 20MW", 4394 .driver_data = &quirk_btusb_bug, 4395 .matches = { 4396 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4397 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4398 }, 4399 }, 4400 { 4401 .ident = "ThinkPad A285 - 20MX", 4402 .driver_data = &quirk_btusb_bug, 4403 .matches = { 4404 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4405 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4406 }, 4407 }, 4408 { 4409 .ident = "ThinkPad A485 - 20MU", 4410 .driver_data = &quirk_btusb_bug, 4411 .matches = { 4412 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4413 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4414 }, 4415 }, 4416 { 4417 .ident = "ThinkPad A485 - 20MV", 4418 .driver_data = &quirk_btusb_bug, 4419 .matches = { 4420 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4421 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4422 }, 4423 }, 4424 {} 4425 }; 4426 4427 static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4428 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4429 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4430 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4431 {} 4432 }; 4433 4434 have_bt_fwbug(void)4435 static int __init have_bt_fwbug(void) 4436 { 4437 /* 4438 * Some AMD based ThinkPads have a firmware bug that calling 4439 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4440 */ 4441 if (tp_features.quirks && tp_features.quirks->btusb_bug && 4442 pci_dev_present(fwbug_cards_ids)) { 4443 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4444 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4445 return 1; 4446 } else 4447 return 0; 4448 } 4449 bluetooth_init(struct ibm_init_struct * iibm)4450 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4451 { 4452 int res; 4453 int status = 0; 4454 4455 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4456 "initializing bluetooth subdriver\n"); 4457 4458 TPACPI_ACPIHANDLE_INIT(hkey); 4459 4460 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4461 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4462 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4463 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4464 4465 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4466 "bluetooth is %s, status 0x%02x\n", 4467 str_supported(tp_features.bluetooth), 4468 status); 4469 4470 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4471 if (dbg_bluetoothemul) { 4472 tp_features.bluetooth = 1; 4473 pr_info("bluetooth switch emulation enabled\n"); 4474 } else 4475 #endif 4476 if (tp_features.bluetooth && 4477 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4478 /* no bluetooth hardware present in system */ 4479 tp_features.bluetooth = 0; 4480 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4481 "bluetooth hardware not installed\n"); 4482 } 4483 4484 if (!tp_features.bluetooth) 4485 return -ENODEV; 4486 4487 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4488 &bluetooth_tprfk_ops, 4489 RFKILL_TYPE_BLUETOOTH, 4490 TPACPI_RFK_BLUETOOTH_SW_NAME, 4491 true); 4492 return res; 4493 } 4494 4495 /* procfs -------------------------------------------------------------- */ bluetooth_read(struct seq_file * m)4496 static int bluetooth_read(struct seq_file *m) 4497 { 4498 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4499 } 4500 bluetooth_write(char * buf)4501 static int bluetooth_write(char *buf) 4502 { 4503 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4504 } 4505 4506 static struct ibm_struct bluetooth_driver_data = { 4507 .name = "bluetooth", 4508 .read = bluetooth_read, 4509 .write = bluetooth_write, 4510 .exit = bluetooth_exit, 4511 .shutdown = bluetooth_shutdown, 4512 }; 4513 4514 /************************************************************************* 4515 * Wan subdriver 4516 */ 4517 4518 enum { 4519 /* ACPI GWAN/SWAN bits */ 4520 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4521 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4522 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4523 0 = disable, 1 = enable */ 4524 }; 4525 4526 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4527 wan_get_status(void)4528 static int wan_get_status(void) 4529 { 4530 int status; 4531 4532 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4533 if (dbg_wwanemul) 4534 return (tpacpi_wwan_emulstate) ? 4535 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4536 #endif 4537 4538 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4539 return -EIO; 4540 4541 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4542 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4543 } 4544 wan_set_status(enum tpacpi_rfkill_state state)4545 static int wan_set_status(enum tpacpi_rfkill_state state) 4546 { 4547 int status; 4548 4549 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s wwan\n", 4550 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4551 4552 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4553 if (dbg_wwanemul) { 4554 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4555 return 0; 4556 } 4557 #endif 4558 4559 if (state == TPACPI_RFK_RADIO_ON) 4560 status = TP_ACPI_WANCARD_RADIOSSW 4561 | TP_ACPI_WANCARD_RESUMECTRL; 4562 else 4563 status = 0; 4564 4565 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4566 return -EIO; 4567 4568 return 0; 4569 } 4570 4571 /* sysfs wan enable ---------------------------------------------------- */ wan_enable_show(struct device * dev,struct device_attribute * attr,char * buf)4572 static ssize_t wan_enable_show(struct device *dev, 4573 struct device_attribute *attr, 4574 char *buf) 4575 { 4576 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4577 attr, buf); 4578 } 4579 wan_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4580 static ssize_t wan_enable_store(struct device *dev, 4581 struct device_attribute *attr, 4582 const char *buf, size_t count) 4583 { 4584 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4585 attr, buf, count); 4586 } 4587 4588 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4589 wan_enable_show, wan_enable_store); 4590 4591 /* --------------------------------------------------------------------- */ 4592 4593 static struct attribute *wan_attributes[] = { 4594 &dev_attr_wwan_enable.attr, 4595 NULL 4596 }; 4597 wan_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)4598 static umode_t wan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 4599 int n) 4600 { 4601 return tp_features.wan ? attr->mode : 0; 4602 } 4603 4604 static const struct attribute_group wan_attr_group = { 4605 .is_visible = wan_attr_is_visible, 4606 .attrs = wan_attributes, 4607 }; 4608 4609 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4610 .get_status = wan_get_status, 4611 .set_status = wan_set_status, 4612 }; 4613 wan_shutdown(void)4614 static void wan_shutdown(void) 4615 { 4616 /* Order firmware to save current state to NVRAM */ 4617 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4618 TP_ACPI_WGSV_SAVE_STATE)) 4619 pr_notice("failed to save WWAN state to NVRAM\n"); 4620 else 4621 vdbg_printk(TPACPI_DBG_RFKILL, 4622 "WWAN state saved to NVRAM\n"); 4623 } 4624 wan_exit(void)4625 static void wan_exit(void) 4626 { 4627 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4628 wan_shutdown(); 4629 } 4630 wan_init(struct ibm_init_struct * iibm)4631 static int __init wan_init(struct ibm_init_struct *iibm) 4632 { 4633 int res; 4634 int status = 0; 4635 4636 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4637 "initializing wan subdriver\n"); 4638 4639 TPACPI_ACPIHANDLE_INIT(hkey); 4640 4641 tp_features.wan = hkey_handle && 4642 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4643 4644 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4645 "wan is %s, status 0x%02x\n", 4646 str_supported(tp_features.wan), 4647 status); 4648 4649 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4650 if (dbg_wwanemul) { 4651 tp_features.wan = 1; 4652 pr_info("wwan switch emulation enabled\n"); 4653 } else 4654 #endif 4655 if (tp_features.wan && 4656 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4657 /* no wan hardware present in system */ 4658 tp_features.wan = 0; 4659 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4660 "wan hardware not installed\n"); 4661 } 4662 4663 if (!tp_features.wan) 4664 return -ENODEV; 4665 4666 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4667 &wan_tprfk_ops, 4668 RFKILL_TYPE_WWAN, 4669 TPACPI_RFK_WWAN_SW_NAME, 4670 true); 4671 return res; 4672 } 4673 4674 /* procfs -------------------------------------------------------------- */ wan_read(struct seq_file * m)4675 static int wan_read(struct seq_file *m) 4676 { 4677 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4678 } 4679 wan_write(char * buf)4680 static int wan_write(char *buf) 4681 { 4682 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4683 } 4684 4685 static struct ibm_struct wan_driver_data = { 4686 .name = "wan", 4687 .read = wan_read, 4688 .write = wan_write, 4689 .exit = wan_exit, 4690 .shutdown = wan_shutdown, 4691 }; 4692 4693 /************************************************************************* 4694 * UWB subdriver 4695 */ 4696 4697 enum { 4698 /* ACPI GUWB/SUWB bits */ 4699 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4700 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4701 }; 4702 4703 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4704 uwb_get_status(void)4705 static int uwb_get_status(void) 4706 { 4707 int status; 4708 4709 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4710 if (dbg_uwbemul) 4711 return (tpacpi_uwb_emulstate) ? 4712 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4713 #endif 4714 4715 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4716 return -EIO; 4717 4718 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4719 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4720 } 4721 uwb_set_status(enum tpacpi_rfkill_state state)4722 static int uwb_set_status(enum tpacpi_rfkill_state state) 4723 { 4724 int status; 4725 4726 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s UWB\n", 4727 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4728 4729 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4730 if (dbg_uwbemul) { 4731 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4732 return 0; 4733 } 4734 #endif 4735 4736 if (state == TPACPI_RFK_RADIO_ON) 4737 status = TP_ACPI_UWB_RADIOSSW; 4738 else 4739 status = 0; 4740 4741 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4742 return -EIO; 4743 4744 return 0; 4745 } 4746 4747 /* --------------------------------------------------------------------- */ 4748 4749 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4750 .get_status = uwb_get_status, 4751 .set_status = uwb_set_status, 4752 }; 4753 uwb_exit(void)4754 static void uwb_exit(void) 4755 { 4756 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4757 } 4758 uwb_init(struct ibm_init_struct * iibm)4759 static int __init uwb_init(struct ibm_init_struct *iibm) 4760 { 4761 int res; 4762 int status = 0; 4763 4764 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4765 "initializing uwb subdriver\n"); 4766 4767 TPACPI_ACPIHANDLE_INIT(hkey); 4768 4769 tp_features.uwb = hkey_handle && 4770 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4771 4772 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4773 "uwb is %s, status 0x%02x\n", 4774 str_supported(tp_features.uwb), 4775 status); 4776 4777 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4778 if (dbg_uwbemul) { 4779 tp_features.uwb = 1; 4780 pr_info("uwb switch emulation enabled\n"); 4781 } else 4782 #endif 4783 if (tp_features.uwb && 4784 !(status & TP_ACPI_UWB_HWPRESENT)) { 4785 /* no uwb hardware present in system */ 4786 tp_features.uwb = 0; 4787 dbg_printk(TPACPI_DBG_INIT, 4788 "uwb hardware not installed\n"); 4789 } 4790 4791 if (!tp_features.uwb) 4792 return -ENODEV; 4793 4794 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4795 &uwb_tprfk_ops, 4796 RFKILL_TYPE_UWB, 4797 TPACPI_RFK_UWB_SW_NAME, 4798 false); 4799 return res; 4800 } 4801 4802 static struct ibm_struct uwb_driver_data = { 4803 .name = "uwb", 4804 .exit = uwb_exit, 4805 .flags.experimental = 1, 4806 }; 4807 4808 /************************************************************************* 4809 * Video subdriver 4810 */ 4811 4812 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4813 4814 enum video_access_mode { 4815 TPACPI_VIDEO_NONE = 0, 4816 TPACPI_VIDEO_570, /* 570 */ 4817 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4818 TPACPI_VIDEO_NEW, /* all others */ 4819 }; 4820 4821 enum { /* video status flags, based on VIDEO_570 */ 4822 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4823 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4824 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4825 }; 4826 4827 enum { /* TPACPI_VIDEO_570 constants */ 4828 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4829 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4830 * video_status_flags */ 4831 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4832 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4833 }; 4834 4835 static enum video_access_mode video_supported; 4836 static int video_orig_autosw; 4837 4838 static int video_autosw_get(void); 4839 static int video_autosw_set(int enable); 4840 4841 TPACPI_HANDLE(vid, root, 4842 "\\_SB.PCI.AGP.VGA", /* 570 */ 4843 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4844 "\\_SB.PCI0.VID0", /* 770e */ 4845 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4846 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4847 "\\_SB.PCI0.AGP.VID", /* all others */ 4848 ); /* R30, R31 */ 4849 4850 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4851 video_init(struct ibm_init_struct * iibm)4852 static int __init video_init(struct ibm_init_struct *iibm) 4853 { 4854 int ivga; 4855 4856 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4857 4858 TPACPI_ACPIHANDLE_INIT(vid); 4859 if (tpacpi_is_ibm()) 4860 TPACPI_ACPIHANDLE_INIT(vid2); 4861 4862 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4863 /* G41, assume IVGA doesn't change */ 4864 vid_handle = vid2_handle; 4865 4866 if (!vid_handle) 4867 /* video switching not supported on R30, R31 */ 4868 video_supported = TPACPI_VIDEO_NONE; 4869 else if (tpacpi_is_ibm() && 4870 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4871 /* 570 */ 4872 video_supported = TPACPI_VIDEO_570; 4873 else if (tpacpi_is_ibm() && 4874 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4875 /* 600e/x, 770e, 770x */ 4876 video_supported = TPACPI_VIDEO_770; 4877 else 4878 /* all others */ 4879 video_supported = TPACPI_VIDEO_NEW; 4880 4881 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4882 str_supported(video_supported != TPACPI_VIDEO_NONE), 4883 video_supported); 4884 4885 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : -ENODEV; 4886 } 4887 video_exit(void)4888 static void video_exit(void) 4889 { 4890 dbg_printk(TPACPI_DBG_EXIT, 4891 "restoring original video autoswitch mode\n"); 4892 if (video_autosw_set(video_orig_autosw)) 4893 pr_err("error while trying to restore original video autoswitch mode\n"); 4894 } 4895 video_outputsw_get(void)4896 static int video_outputsw_get(void) 4897 { 4898 int status = 0; 4899 int i; 4900 4901 switch (video_supported) { 4902 case TPACPI_VIDEO_570: 4903 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 4904 TP_ACPI_VIDEO_570_PHSCMD)) 4905 return -EIO; 4906 status = i & TP_ACPI_VIDEO_570_PHSMASK; 4907 break; 4908 case TPACPI_VIDEO_770: 4909 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 4910 return -EIO; 4911 if (i) 4912 status |= TP_ACPI_VIDEO_S_LCD; 4913 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 4914 return -EIO; 4915 if (i) 4916 status |= TP_ACPI_VIDEO_S_CRT; 4917 break; 4918 case TPACPI_VIDEO_NEW: 4919 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 4920 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 4921 return -EIO; 4922 if (i) 4923 status |= TP_ACPI_VIDEO_S_CRT; 4924 4925 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 4926 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 4927 return -EIO; 4928 if (i) 4929 status |= TP_ACPI_VIDEO_S_LCD; 4930 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 4931 return -EIO; 4932 if (i) 4933 status |= TP_ACPI_VIDEO_S_DVI; 4934 break; 4935 default: 4936 return -ENOSYS; 4937 } 4938 4939 return status; 4940 } 4941 video_outputsw_set(int status)4942 static int video_outputsw_set(int status) 4943 { 4944 int autosw; 4945 int res = 0; 4946 4947 switch (video_supported) { 4948 case TPACPI_VIDEO_570: 4949 res = acpi_evalf(NULL, NULL, 4950 "\\_SB.PHS2", "vdd", 4951 TP_ACPI_VIDEO_570_PHS2CMD, 4952 status | TP_ACPI_VIDEO_570_PHS2SET); 4953 break; 4954 case TPACPI_VIDEO_770: 4955 autosw = video_autosw_get(); 4956 if (autosw < 0) 4957 return autosw; 4958 4959 res = video_autosw_set(1); 4960 if (res) 4961 return res; 4962 res = acpi_evalf(vid_handle, NULL, 4963 "ASWT", "vdd", status * 0x100, 0); 4964 if (!autosw && video_autosw_set(autosw)) { 4965 pr_err("video auto-switch left enabled due to error\n"); 4966 return -EIO; 4967 } 4968 break; 4969 case TPACPI_VIDEO_NEW: 4970 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 4971 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 4972 break; 4973 default: 4974 return -ENOSYS; 4975 } 4976 4977 return (res) ? 0 : -EIO; 4978 } 4979 video_autosw_get(void)4980 static int video_autosw_get(void) 4981 { 4982 int autosw = 0; 4983 4984 switch (video_supported) { 4985 case TPACPI_VIDEO_570: 4986 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 4987 return -EIO; 4988 break; 4989 case TPACPI_VIDEO_770: 4990 case TPACPI_VIDEO_NEW: 4991 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 4992 return -EIO; 4993 break; 4994 default: 4995 return -ENOSYS; 4996 } 4997 4998 return autosw & 1; 4999 } 5000 video_autosw_set(int enable)5001 static int video_autosw_set(int enable) 5002 { 5003 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 5004 return -EIO; 5005 return 0; 5006 } 5007 video_outputsw_cycle(void)5008 static int video_outputsw_cycle(void) 5009 { 5010 int autosw = video_autosw_get(); 5011 int res; 5012 5013 if (autosw < 0) 5014 return autosw; 5015 5016 switch (video_supported) { 5017 case TPACPI_VIDEO_570: 5018 res = video_autosw_set(1); 5019 if (res) 5020 return res; 5021 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5022 break; 5023 case TPACPI_VIDEO_770: 5024 case TPACPI_VIDEO_NEW: 5025 res = video_autosw_set(1); 5026 if (res) 5027 return res; 5028 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5029 break; 5030 default: 5031 return -ENOSYS; 5032 } 5033 if (!autosw && video_autosw_set(autosw)) { 5034 pr_err("video auto-switch left enabled due to error\n"); 5035 return -EIO; 5036 } 5037 5038 return (res) ? 0 : -EIO; 5039 } 5040 video_expand_toggle(void)5041 static int video_expand_toggle(void) 5042 { 5043 switch (video_supported) { 5044 case TPACPI_VIDEO_570: 5045 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5046 0 : -EIO; 5047 case TPACPI_VIDEO_770: 5048 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5049 0 : -EIO; 5050 case TPACPI_VIDEO_NEW: 5051 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5052 0 : -EIO; 5053 default: 5054 return -ENOSYS; 5055 } 5056 /* not reached */ 5057 } 5058 video_read(struct seq_file * m)5059 static int video_read(struct seq_file *m) 5060 { 5061 int status, autosw; 5062 5063 if (video_supported == TPACPI_VIDEO_NONE) { 5064 seq_printf(m, "status:\t\tnot supported\n"); 5065 return 0; 5066 } 5067 5068 /* Even reads can crash X.org, so... */ 5069 if (!capable(CAP_SYS_ADMIN)) 5070 return -EPERM; 5071 5072 status = video_outputsw_get(); 5073 if (status < 0) 5074 return status; 5075 5076 autosw = video_autosw_get(); 5077 if (autosw < 0) 5078 return autosw; 5079 5080 seq_printf(m, "status:\t\tsupported\n"); 5081 seq_printf(m, "lcd:\t\t%s\n", str_enabled_disabled(status & BIT(0))); 5082 seq_printf(m, "crt:\t\t%s\n", str_enabled_disabled(status & BIT(1))); 5083 if (video_supported == TPACPI_VIDEO_NEW) 5084 seq_printf(m, "dvi:\t\t%s\n", str_enabled_disabled(status & BIT(3))); 5085 seq_printf(m, "auto:\t\t%s\n", str_enabled_disabled(autosw & BIT(0))); 5086 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5087 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5088 if (video_supported == TPACPI_VIDEO_NEW) 5089 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5090 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5091 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5092 5093 return 0; 5094 } 5095 video_write(char * buf)5096 static int video_write(char *buf) 5097 { 5098 char *cmd; 5099 int enable, disable, status; 5100 int res; 5101 5102 if (video_supported == TPACPI_VIDEO_NONE) 5103 return -ENODEV; 5104 5105 /* Even reads can crash X.org, let alone writes... */ 5106 if (!capable(CAP_SYS_ADMIN)) 5107 return -EPERM; 5108 5109 enable = 0; 5110 disable = 0; 5111 5112 while ((cmd = strsep(&buf, ","))) { 5113 if (strstarts(cmd, "lcd_enable")) { 5114 enable |= TP_ACPI_VIDEO_S_LCD; 5115 } else if (strstarts(cmd, "lcd_disable")) { 5116 disable |= TP_ACPI_VIDEO_S_LCD; 5117 } else if (strstarts(cmd, "crt_enable")) { 5118 enable |= TP_ACPI_VIDEO_S_CRT; 5119 } else if (strstarts(cmd, "crt_disable")) { 5120 disable |= TP_ACPI_VIDEO_S_CRT; 5121 } else if (video_supported == TPACPI_VIDEO_NEW && 5122 strstarts(cmd, "dvi_enable")) { 5123 enable |= TP_ACPI_VIDEO_S_DVI; 5124 } else if (video_supported == TPACPI_VIDEO_NEW && 5125 strstarts(cmd, "dvi_disable")) { 5126 disable |= TP_ACPI_VIDEO_S_DVI; 5127 } else if (strstarts(cmd, "auto_enable")) { 5128 res = video_autosw_set(1); 5129 if (res) 5130 return res; 5131 } else if (strstarts(cmd, "auto_disable")) { 5132 res = video_autosw_set(0); 5133 if (res) 5134 return res; 5135 } else if (strstarts(cmd, "video_switch")) { 5136 res = video_outputsw_cycle(); 5137 if (res) 5138 return res; 5139 } else if (strstarts(cmd, "expand_toggle")) { 5140 res = video_expand_toggle(); 5141 if (res) 5142 return res; 5143 } else 5144 return -EINVAL; 5145 } 5146 5147 if (enable || disable) { 5148 status = video_outputsw_get(); 5149 if (status < 0) 5150 return status; 5151 res = video_outputsw_set((status & ~disable) | enable); 5152 if (res) 5153 return res; 5154 } 5155 5156 return 0; 5157 } 5158 5159 static struct ibm_struct video_driver_data = { 5160 .name = "video", 5161 .read = video_read, 5162 .write = video_write, 5163 .exit = video_exit, 5164 }; 5165 5166 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5167 5168 /************************************************************************* 5169 * Keyboard backlight subdriver 5170 */ 5171 5172 static enum led_brightness kbdlight_brightness; 5173 static DEFINE_MUTEX(kbdlight_mutex); 5174 kbdlight_set_level(int level)5175 static int kbdlight_set_level(int level) 5176 { 5177 int ret = 0; 5178 5179 if (!hkey_handle) 5180 return -ENXIO; 5181 5182 mutex_lock(&kbdlight_mutex); 5183 5184 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5185 ret = -EIO; 5186 else 5187 kbdlight_brightness = level; 5188 5189 mutex_unlock(&kbdlight_mutex); 5190 5191 return ret; 5192 } 5193 kbdlight_get_level(void)5194 static int kbdlight_get_level(void) 5195 { 5196 int status = 0; 5197 5198 if (!hkey_handle) 5199 return -ENXIO; 5200 5201 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5202 return -EIO; 5203 5204 if (status < 0) 5205 return status; 5206 5207 return status & 0x3; 5208 } 5209 kbdlight_is_supported(void)5210 static bool kbdlight_is_supported(void) 5211 { 5212 int status = 0; 5213 5214 if (!hkey_handle) 5215 return false; 5216 5217 if (!acpi_has_method(hkey_handle, "MLCG")) { 5218 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5219 return false; 5220 } 5221 5222 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5223 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5224 return false; 5225 } 5226 5227 if (status < 0) { 5228 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5229 return false; 5230 } 5231 5232 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5233 /* 5234 * Guessed test for keyboard backlight: 5235 * 5236 * Machines with backlight keyboard return: 5237 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5238 * b110100010010000000XX - ThinkPad x230 5239 * b010100000010000000XX - ThinkPad x240 5240 * b010100000010000000XX - ThinkPad W541 5241 * (XX is current backlight level) 5242 * 5243 * Machines without backlight keyboard return: 5244 * b10100001000000000000 - ThinkPad x230 5245 * b10110001000000000000 - ThinkPad E430 5246 * b00000000000000000000 - ThinkPad E450 5247 * 5248 * Candidate BITs for detection test (XOR): 5249 * b01000000001000000000 5250 * ^ 5251 */ 5252 return status & BIT(9); 5253 } 5254 kbdlight_sysfs_set(struct led_classdev * led_cdev,enum led_brightness brightness)5255 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5256 enum led_brightness brightness) 5257 { 5258 return kbdlight_set_level(brightness); 5259 } 5260 kbdlight_sysfs_get(struct led_classdev * led_cdev)5261 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5262 { 5263 int level; 5264 5265 level = kbdlight_get_level(); 5266 if (level < 0) 5267 return 0; 5268 5269 return level; 5270 } 5271 5272 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5273 .led_classdev = { 5274 .name = "tpacpi::kbd_backlight", 5275 .max_brightness = 2, 5276 .flags = LED_BRIGHT_HW_CHANGED, 5277 .brightness_set_blocking = &kbdlight_sysfs_set, 5278 .brightness_get = &kbdlight_sysfs_get, 5279 } 5280 }; 5281 kbdlight_init(struct ibm_init_struct * iibm)5282 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5283 { 5284 int rc; 5285 5286 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5287 5288 TPACPI_ACPIHANDLE_INIT(hkey); 5289 5290 if (!kbdlight_is_supported()) { 5291 tp_features.kbdlight = 0; 5292 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5293 return -ENODEV; 5294 } 5295 5296 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5297 tp_features.kbdlight = 1; 5298 5299 rc = led_classdev_register(&tpacpi_pdev->dev, 5300 &tpacpi_led_kbdlight.led_classdev); 5301 if (rc < 0) { 5302 tp_features.kbdlight = 0; 5303 return rc; 5304 } 5305 5306 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5307 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5308 return 0; 5309 } 5310 kbdlight_exit(void)5311 static void kbdlight_exit(void) 5312 { 5313 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5314 } 5315 kbdlight_set_level_and_update(int level)5316 static int kbdlight_set_level_and_update(int level) 5317 { 5318 int ret; 5319 struct led_classdev *led_cdev; 5320 5321 ret = kbdlight_set_level(level); 5322 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5323 5324 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5325 led_cdev->brightness = level; 5326 5327 return ret; 5328 } 5329 kbdlight_read(struct seq_file * m)5330 static int kbdlight_read(struct seq_file *m) 5331 { 5332 int level; 5333 5334 if (!tp_features.kbdlight) { 5335 seq_printf(m, "status:\t\tnot supported\n"); 5336 } else { 5337 level = kbdlight_get_level(); 5338 if (level < 0) 5339 seq_printf(m, "status:\t\terror %d\n", level); 5340 else 5341 seq_printf(m, "status:\t\t%d\n", level); 5342 seq_printf(m, "commands:\t0, 1, 2\n"); 5343 } 5344 5345 return 0; 5346 } 5347 kbdlight_write(char * buf)5348 static int kbdlight_write(char *buf) 5349 { 5350 char *cmd; 5351 int res, level = -EINVAL; 5352 5353 if (!tp_features.kbdlight) 5354 return -ENODEV; 5355 5356 while ((cmd = strsep(&buf, ","))) { 5357 res = kstrtoint(cmd, 10, &level); 5358 if (res < 0) 5359 return res; 5360 } 5361 5362 if (level >= 3 || level < 0) 5363 return -EINVAL; 5364 5365 return kbdlight_set_level_and_update(level); 5366 } 5367 kbdlight_suspend(void)5368 static void kbdlight_suspend(void) 5369 { 5370 struct led_classdev *led_cdev; 5371 5372 if (!tp_features.kbdlight) 5373 return; 5374 5375 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5376 led_update_brightness(led_cdev); 5377 led_classdev_suspend(led_cdev); 5378 } 5379 kbdlight_resume(void)5380 static void kbdlight_resume(void) 5381 { 5382 if (!tp_features.kbdlight) 5383 return; 5384 5385 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5386 } 5387 5388 static struct ibm_struct kbdlight_driver_data = { 5389 .name = "kbdlight", 5390 .read = kbdlight_read, 5391 .write = kbdlight_write, 5392 .suspend = kbdlight_suspend, 5393 .resume = kbdlight_resume, 5394 .exit = kbdlight_exit, 5395 }; 5396 5397 /************************************************************************* 5398 * Light (thinklight) subdriver 5399 */ 5400 5401 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5402 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5403 light_get_status(void)5404 static int light_get_status(void) 5405 { 5406 int status = 0; 5407 5408 if (tp_features.light_status) { 5409 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5410 return -EIO; 5411 return (!!status); 5412 } 5413 5414 return -ENXIO; 5415 } 5416 light_set_status(int status)5417 static int light_set_status(int status) 5418 { 5419 int rc; 5420 5421 if (tp_features.light) { 5422 if (cmos_handle) { 5423 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5424 (status) ? 5425 TP_CMOS_THINKLIGHT_ON : 5426 TP_CMOS_THINKLIGHT_OFF); 5427 } else { 5428 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5429 (status) ? 1 : 0); 5430 } 5431 return (rc) ? 0 : -EIO; 5432 } 5433 5434 return -ENXIO; 5435 } 5436 light_sysfs_set(struct led_classdev * led_cdev,enum led_brightness brightness)5437 static int light_sysfs_set(struct led_classdev *led_cdev, 5438 enum led_brightness brightness) 5439 { 5440 return light_set_status((brightness != LED_OFF) ? 5441 TPACPI_LED_ON : TPACPI_LED_OFF); 5442 } 5443 light_sysfs_get(struct led_classdev * led_cdev)5444 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5445 { 5446 return (light_get_status() == 1) ? LED_ON : LED_OFF; 5447 } 5448 5449 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5450 .led_classdev = { 5451 .name = "tpacpi::thinklight", 5452 .max_brightness = 1, 5453 .brightness_set_blocking = &light_sysfs_set, 5454 .brightness_get = &light_sysfs_get, 5455 } 5456 }; 5457 light_init(struct ibm_init_struct * iibm)5458 static int __init light_init(struct ibm_init_struct *iibm) 5459 { 5460 int rc; 5461 5462 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5463 5464 if (tpacpi_is_ibm()) { 5465 TPACPI_ACPIHANDLE_INIT(ledb); 5466 TPACPI_ACPIHANDLE_INIT(lght); 5467 } 5468 TPACPI_ACPIHANDLE_INIT(cmos); 5469 5470 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5471 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5472 5473 if (tp_features.light) 5474 /* light status not supported on 5475 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5476 tp_features.light_status = 5477 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5478 5479 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5480 str_supported(tp_features.light), 5481 str_supported(tp_features.light_status)); 5482 5483 if (!tp_features.light) 5484 return -ENODEV; 5485 5486 rc = led_classdev_register(&tpacpi_pdev->dev, 5487 &tpacpi_led_thinklight.led_classdev); 5488 5489 if (rc < 0) { 5490 tp_features.light = 0; 5491 tp_features.light_status = 0; 5492 } else { 5493 rc = 0; 5494 } 5495 5496 return rc; 5497 } 5498 light_exit(void)5499 static void light_exit(void) 5500 { 5501 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5502 } 5503 light_read(struct seq_file * m)5504 static int light_read(struct seq_file *m) 5505 { 5506 int status; 5507 5508 if (!tp_features.light) { 5509 seq_printf(m, "status:\t\tnot supported\n"); 5510 } else if (!tp_features.light_status) { 5511 seq_printf(m, "status:\t\tunknown\n"); 5512 seq_printf(m, "commands:\ton, off\n"); 5513 } else { 5514 status = light_get_status(); 5515 if (status < 0) 5516 return status; 5517 seq_printf(m, "status:\t\t%s\n", str_on_off(status & BIT(0))); 5518 seq_printf(m, "commands:\ton, off\n"); 5519 } 5520 5521 return 0; 5522 } 5523 light_write(char * buf)5524 static int light_write(char *buf) 5525 { 5526 char *cmd; 5527 int newstatus = 0; 5528 5529 if (!tp_features.light) 5530 return -ENODEV; 5531 5532 while ((cmd = strsep(&buf, ","))) { 5533 if (strstarts(cmd, "on")) { 5534 newstatus = 1; 5535 } else if (strstarts(cmd, "off")) { 5536 newstatus = 0; 5537 } else 5538 return -EINVAL; 5539 } 5540 5541 return light_set_status(newstatus); 5542 } 5543 5544 static struct ibm_struct light_driver_data = { 5545 .name = "light", 5546 .read = light_read, 5547 .write = light_write, 5548 .exit = light_exit, 5549 }; 5550 5551 /************************************************************************* 5552 * CMOS subdriver 5553 */ 5554 5555 /* sysfs cmos_command -------------------------------------------------- */ cmos_command_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)5556 static ssize_t cmos_command_store(struct device *dev, 5557 struct device_attribute *attr, 5558 const char *buf, size_t count) 5559 { 5560 unsigned long cmos_cmd; 5561 int res; 5562 5563 if (parse_strtoul(buf, 21, &cmos_cmd)) 5564 return -EINVAL; 5565 5566 res = issue_thinkpad_cmos_command(cmos_cmd); 5567 return (res) ? res : count; 5568 } 5569 5570 static DEVICE_ATTR_WO(cmos_command); 5571 5572 static struct attribute *cmos_attributes[] = { 5573 &dev_attr_cmos_command.attr, 5574 NULL 5575 }; 5576 cmos_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)5577 static umode_t cmos_attr_is_visible(struct kobject *kobj, 5578 struct attribute *attr, int n) 5579 { 5580 return cmos_handle ? attr->mode : 0; 5581 } 5582 5583 static const struct attribute_group cmos_attr_group = { 5584 .is_visible = cmos_attr_is_visible, 5585 .attrs = cmos_attributes, 5586 }; 5587 5588 /* --------------------------------------------------------------------- */ 5589 cmos_init(struct ibm_init_struct * iibm)5590 static int __init cmos_init(struct ibm_init_struct *iibm) 5591 { 5592 vdbg_printk(TPACPI_DBG_INIT, 5593 "initializing cmos commands subdriver\n"); 5594 5595 TPACPI_ACPIHANDLE_INIT(cmos); 5596 5597 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5598 str_supported(cmos_handle != NULL)); 5599 5600 return cmos_handle ? 0 : -ENODEV; 5601 } 5602 cmos_read(struct seq_file * m)5603 static int cmos_read(struct seq_file *m) 5604 { 5605 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5606 R30, R31, T20-22, X20-21 */ 5607 if (!cmos_handle) 5608 seq_printf(m, "status:\t\tnot supported\n"); 5609 else { 5610 seq_printf(m, "status:\t\tsupported\n"); 5611 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5612 } 5613 5614 return 0; 5615 } 5616 cmos_write(char * buf)5617 static int cmos_write(char *buf) 5618 { 5619 char *cmd; 5620 int cmos_cmd, res; 5621 5622 while ((cmd = strsep(&buf, ","))) { 5623 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5624 cmos_cmd >= 0 && cmos_cmd <= 21) { 5625 /* cmos_cmd set */ 5626 } else 5627 return -EINVAL; 5628 5629 res = issue_thinkpad_cmos_command(cmos_cmd); 5630 if (res) 5631 return res; 5632 } 5633 5634 return 0; 5635 } 5636 5637 static struct ibm_struct cmos_driver_data = { 5638 .name = "cmos", 5639 .read = cmos_read, 5640 .write = cmos_write, 5641 }; 5642 5643 /************************************************************************* 5644 * LED subdriver 5645 */ 5646 5647 enum led_access_mode { 5648 TPACPI_LED_NONE = 0, 5649 TPACPI_LED_570, /* 570 */ 5650 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5651 TPACPI_LED_NEW, /* all others */ 5652 }; 5653 5654 enum { /* For TPACPI_LED_OLD */ 5655 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5656 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5657 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5658 }; 5659 5660 static enum led_access_mode led_supported; 5661 5662 static acpi_handle led_handle; 5663 5664 #define TPACPI_LED_NUMLEDS 16 5665 static struct tpacpi_led_classdev *tpacpi_leds; 5666 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5667 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5668 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5669 "tpacpi::power", 5670 "tpacpi:orange:batt", 5671 "tpacpi:green:batt", 5672 "tpacpi::dock_active", 5673 "tpacpi::bay_active", 5674 "tpacpi::dock_batt", 5675 "tpacpi::unknown_led", 5676 "tpacpi::standby", 5677 "tpacpi::dock_status1", 5678 "tpacpi::dock_status2", 5679 "tpacpi::lid_logo_dot", 5680 "tpacpi::unknown_led3", 5681 "tpacpi::thinkvantage", 5682 }; 5683 #define TPACPI_SAFE_LEDS 0x1481U 5684 tpacpi_is_led_restricted(const unsigned int led)5685 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5686 { 5687 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5688 return false; 5689 #else 5690 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5691 #endif 5692 } 5693 led_get_status(const unsigned int led)5694 static int led_get_status(const unsigned int led) 5695 { 5696 int status; 5697 enum led_status_t led_s; 5698 5699 switch (led_supported) { 5700 case TPACPI_LED_570: 5701 if (!acpi_evalf(ec_handle, 5702 &status, "GLED", "dd", 1 << led)) 5703 return -EIO; 5704 led_s = (status == 0) ? 5705 TPACPI_LED_OFF : 5706 ((status == 1) ? 5707 TPACPI_LED_ON : 5708 TPACPI_LED_BLINK); 5709 tpacpi_led_state_cache[led] = led_s; 5710 return led_s; 5711 default: 5712 return -ENXIO; 5713 } 5714 5715 /* not reached */ 5716 } 5717 led_set_status(const unsigned int led,const enum led_status_t ledstatus)5718 static int led_set_status(const unsigned int led, 5719 const enum led_status_t ledstatus) 5720 { 5721 /* off, on, blink. Index is led_status_t */ 5722 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5723 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5724 5725 int rc = 0; 5726 5727 switch (led_supported) { 5728 case TPACPI_LED_570: 5729 /* 570 */ 5730 if (unlikely(led > 7)) 5731 return -EINVAL; 5732 if (unlikely(tpacpi_is_led_restricted(led))) 5733 return -EPERM; 5734 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5735 (1 << led), led_sled_arg1[ledstatus])) 5736 return -EIO; 5737 break; 5738 case TPACPI_LED_OLD: 5739 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5740 if (unlikely(led > 7)) 5741 return -EINVAL; 5742 if (unlikely(tpacpi_is_led_restricted(led))) 5743 return -EPERM; 5744 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5745 if (rc >= 0) 5746 rc = ec_write(TPACPI_LED_EC_HLBL, 5747 (ledstatus == TPACPI_LED_BLINK) << led); 5748 if (rc >= 0) 5749 rc = ec_write(TPACPI_LED_EC_HLCL, 5750 (ledstatus != TPACPI_LED_OFF) << led); 5751 break; 5752 case TPACPI_LED_NEW: 5753 /* all others */ 5754 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5755 return -EINVAL; 5756 if (unlikely(tpacpi_is_led_restricted(led))) 5757 return -EPERM; 5758 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5759 led, led_led_arg1[ledstatus])) 5760 return -EIO; 5761 break; 5762 default: 5763 return -ENXIO; 5764 } 5765 5766 if (!rc) 5767 tpacpi_led_state_cache[led] = ledstatus; 5768 5769 return rc; 5770 } 5771 led_sysfs_set(struct led_classdev * led_cdev,enum led_brightness brightness)5772 static int led_sysfs_set(struct led_classdev *led_cdev, 5773 enum led_brightness brightness) 5774 { 5775 struct tpacpi_led_classdev *data = container_of(led_cdev, 5776 struct tpacpi_led_classdev, led_classdev); 5777 enum led_status_t new_state; 5778 5779 if (brightness == LED_OFF) 5780 new_state = TPACPI_LED_OFF; 5781 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5782 new_state = TPACPI_LED_ON; 5783 else 5784 new_state = TPACPI_LED_BLINK; 5785 5786 return led_set_status(data->led, new_state); 5787 } 5788 led_sysfs_blink_set(struct led_classdev * led_cdev,unsigned long * delay_on,unsigned long * delay_off)5789 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5790 unsigned long *delay_on, unsigned long *delay_off) 5791 { 5792 struct tpacpi_led_classdev *data = container_of(led_cdev, 5793 struct tpacpi_led_classdev, led_classdev); 5794 5795 /* Can we choose the flash rate? */ 5796 if (*delay_on == 0 && *delay_off == 0) { 5797 /* yes. set them to the hardware blink rate (1 Hz) */ 5798 *delay_on = 500; /* ms */ 5799 *delay_off = 500; /* ms */ 5800 } else if ((*delay_on != 500) || (*delay_off != 500)) 5801 return -EINVAL; 5802 5803 return led_set_status(data->led, TPACPI_LED_BLINK); 5804 } 5805 led_sysfs_get(struct led_classdev * led_cdev)5806 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5807 { 5808 int rc; 5809 5810 struct tpacpi_led_classdev *data = container_of(led_cdev, 5811 struct tpacpi_led_classdev, led_classdev); 5812 5813 rc = led_get_status(data->led); 5814 5815 if (rc == TPACPI_LED_OFF || rc < 0) 5816 rc = LED_OFF; /* no error handling in led class :( */ 5817 else 5818 rc = LED_FULL; 5819 5820 return rc; 5821 } 5822 led_exit(void)5823 static void led_exit(void) 5824 { 5825 unsigned int i; 5826 5827 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5828 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5829 5830 kfree(tpacpi_leds); 5831 } 5832 tpacpi_init_led(unsigned int led)5833 static int __init tpacpi_init_led(unsigned int led) 5834 { 5835 /* LEDs with no name don't get registered */ 5836 if (!tpacpi_led_names[led]) 5837 return 0; 5838 5839 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5840 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5841 if (led_supported == TPACPI_LED_570) 5842 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5843 5844 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5845 tpacpi_leds[led].led_classdev.flags = LED_RETAIN_AT_SHUTDOWN; 5846 tpacpi_leds[led].led = led; 5847 5848 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5849 } 5850 5851 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5852 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5853 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5854 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5855 5856 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5857 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5858 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5859 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5860 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5861 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5862 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5863 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5864 5865 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5866 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5867 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5868 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5869 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5870 5871 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5872 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5873 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5874 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5875 5876 /* (1) - may have excess leds enabled on MSB */ 5877 5878 /* Defaults (order matters, keep last, don't reorder!) */ 5879 { /* Lenovo */ 5880 .vendor = PCI_VENDOR_ID_LENOVO, 5881 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5882 .quirks = 0x1fffU, 5883 }, 5884 { /* IBM ThinkPads with no EC version string */ 5885 .vendor = PCI_VENDOR_ID_IBM, 5886 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 5887 .quirks = 0x00ffU, 5888 }, 5889 { /* IBM ThinkPads with EC version string */ 5890 .vendor = PCI_VENDOR_ID_IBM, 5891 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5892 .quirks = 0x00bfU, 5893 }, 5894 }; 5895 led_init_detect_mode(void)5896 static enum led_access_mode __init led_init_detect_mode(void) 5897 { 5898 acpi_status status; 5899 5900 if (tpacpi_is_ibm()) { 5901 /* 570 */ 5902 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 5903 if (ACPI_SUCCESS(status)) 5904 return TPACPI_LED_570; 5905 5906 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5907 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 5908 if (ACPI_SUCCESS(status)) 5909 return TPACPI_LED_OLD; 5910 } 5911 5912 /* most others */ 5913 status = acpi_get_handle(ec_handle, "LED", &led_handle); 5914 if (ACPI_SUCCESS(status)) 5915 return TPACPI_LED_NEW; 5916 5917 /* R30, R31, and unknown firmwares */ 5918 led_handle = NULL; 5919 return TPACPI_LED_NONE; 5920 } 5921 led_init(struct ibm_init_struct * iibm)5922 static int __init led_init(struct ibm_init_struct *iibm) 5923 { 5924 unsigned int i; 5925 int rc; 5926 unsigned long useful_leds; 5927 5928 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 5929 5930 led_supported = led_init_detect_mode(); 5931 5932 if (led_supported != TPACPI_LED_NONE) { 5933 useful_leds = tpacpi_check_quirks(led_useful_qtable, 5934 ARRAY_SIZE(led_useful_qtable)); 5935 5936 if (!useful_leds) { 5937 led_handle = NULL; 5938 led_supported = TPACPI_LED_NONE; 5939 } 5940 } 5941 5942 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 5943 str_supported(led_supported), led_supported); 5944 5945 if (led_supported == TPACPI_LED_NONE) 5946 return -ENODEV; 5947 5948 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), 5949 GFP_KERNEL); 5950 if (!tpacpi_leds) { 5951 pr_err("Out of memory for LED data\n"); 5952 return -ENOMEM; 5953 } 5954 5955 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 5956 tpacpi_leds[i].led = -1; 5957 5958 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 5959 rc = tpacpi_init_led(i); 5960 if (rc < 0) { 5961 led_exit(); 5962 return rc; 5963 } 5964 } 5965 } 5966 5967 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5968 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 5969 #endif 5970 return 0; 5971 } 5972 5973 #define str_led_status(s) ((s) >= TPACPI_LED_BLINK ? "blinking" : str_on_off(s)) 5974 led_read(struct seq_file * m)5975 static int led_read(struct seq_file *m) 5976 { 5977 if (!led_supported) { 5978 seq_printf(m, "status:\t\tnot supported\n"); 5979 return 0; 5980 } 5981 seq_printf(m, "status:\t\tsupported\n"); 5982 5983 if (led_supported == TPACPI_LED_570) { 5984 /* 570 */ 5985 int i, status; 5986 for (i = 0; i < 8; i++) { 5987 status = led_get_status(i); 5988 if (status < 0) 5989 return -EIO; 5990 seq_printf(m, "%d:\t\t%s\n", i, str_led_status(status)); 5991 } 5992 } 5993 5994 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 5995 5996 return 0; 5997 } 5998 led_write(char * buf)5999 static int led_write(char *buf) 6000 { 6001 char *cmd; 6002 int led, rc; 6003 enum led_status_t s; 6004 6005 if (!led_supported) 6006 return -ENODEV; 6007 6008 while ((cmd = strsep(&buf, ","))) { 6009 if (sscanf(cmd, "%d", &led) != 1) 6010 return -EINVAL; 6011 6012 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 6013 return -ENODEV; 6014 6015 if (tpacpi_leds[led].led < 0) 6016 return -ENODEV; 6017 6018 if (strstr(cmd, "off")) { 6019 s = TPACPI_LED_OFF; 6020 } else if (strstr(cmd, "on")) { 6021 s = TPACPI_LED_ON; 6022 } else if (strstr(cmd, "blink")) { 6023 s = TPACPI_LED_BLINK; 6024 } else { 6025 return -EINVAL; 6026 } 6027 6028 rc = led_set_status(led, s); 6029 if (rc < 0) 6030 return rc; 6031 } 6032 6033 return 0; 6034 } 6035 6036 static struct ibm_struct led_driver_data = { 6037 .name = "led", 6038 .read = led_read, 6039 .write = led_write, 6040 .exit = led_exit, 6041 }; 6042 6043 /************************************************************************* 6044 * Beep subdriver 6045 */ 6046 6047 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6048 6049 #define TPACPI_BEEP_Q1 0x0001 6050 6051 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6052 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6053 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6054 }; 6055 beep_init(struct ibm_init_struct * iibm)6056 static int __init beep_init(struct ibm_init_struct *iibm) 6057 { 6058 unsigned long quirks; 6059 6060 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6061 6062 TPACPI_ACPIHANDLE_INIT(beep); 6063 6064 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6065 str_supported(beep_handle != NULL)); 6066 6067 quirks = tpacpi_check_quirks(beep_quirk_table, 6068 ARRAY_SIZE(beep_quirk_table)); 6069 6070 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6071 6072 return (beep_handle) ? 0 : -ENODEV; 6073 } 6074 beep_read(struct seq_file * m)6075 static int beep_read(struct seq_file *m) 6076 { 6077 if (!beep_handle) 6078 seq_printf(m, "status:\t\tnot supported\n"); 6079 else { 6080 seq_printf(m, "status:\t\tsupported\n"); 6081 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6082 } 6083 6084 return 0; 6085 } 6086 beep_write(char * buf)6087 static int beep_write(char *buf) 6088 { 6089 char *cmd; 6090 int beep_cmd; 6091 6092 if (!beep_handle) 6093 return -ENODEV; 6094 6095 while ((cmd = strsep(&buf, ","))) { 6096 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6097 beep_cmd >= 0 && beep_cmd <= 17) { 6098 /* beep_cmd set */ 6099 } else 6100 return -EINVAL; 6101 if (tp_features.beep_needs_two_args) { 6102 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6103 beep_cmd, 0)) 6104 return -EIO; 6105 } else { 6106 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6107 beep_cmd)) 6108 return -EIO; 6109 } 6110 } 6111 6112 return 0; 6113 } 6114 6115 static struct ibm_struct beep_driver_data = { 6116 .name = "beep", 6117 .read = beep_read, 6118 .write = beep_write, 6119 }; 6120 6121 /************************************************************************* 6122 * Thermal subdriver 6123 */ 6124 6125 enum thermal_access_mode { 6126 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6127 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6128 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6129 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6130 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6131 }; 6132 6133 enum { /* TPACPI_THERMAL_TPEC_* */ 6134 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6135 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6136 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */ 6137 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6138 6139 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6140 }; 6141 6142 6143 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6144 struct ibm_thermal_sensors_struct { 6145 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6146 }; 6147 6148 static enum thermal_access_mode thermal_read_mode; 6149 static bool thermal_use_labels; 6150 6151 /* idx is zero-based */ thermal_get_sensor(int idx,s32 * value)6152 static int thermal_get_sensor(int idx, s32 *value) 6153 { 6154 int t; 6155 s8 tmp; 6156 char tmpi[5]; 6157 6158 t = TP_EC_THERMAL_TMP0; 6159 6160 switch (thermal_read_mode) { 6161 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6162 case TPACPI_THERMAL_TPEC_16: 6163 if (idx >= 8 && idx <= 15) { 6164 t = TP_EC_THERMAL_TMP8; 6165 idx -= 8; 6166 } 6167 #endif 6168 fallthrough; 6169 case TPACPI_THERMAL_TPEC_8: 6170 if (idx <= 7) { 6171 if (!acpi_ec_read(t + idx, &tmp)) 6172 return -EIO; 6173 *value = tmp * 1000; 6174 return 0; 6175 } 6176 break; 6177 6178 case TPACPI_THERMAL_ACPI_UPDT: 6179 if (idx <= 7) { 6180 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6181 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6182 return -EIO; 6183 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6184 return -EIO; 6185 *value = (t - 2732) * 100; 6186 return 0; 6187 } 6188 break; 6189 6190 case TPACPI_THERMAL_ACPI_TMP07: 6191 if (idx <= 7) { 6192 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6193 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6194 return -EIO; 6195 if (t > 127 || t < -127) 6196 t = TP_EC_THERMAL_TMP_NA; 6197 *value = t * 1000; 6198 return 0; 6199 } 6200 break; 6201 6202 case TPACPI_THERMAL_NONE: 6203 default: 6204 return -ENOSYS; 6205 } 6206 6207 return -EINVAL; 6208 } 6209 thermal_get_sensors(struct ibm_thermal_sensors_struct * s)6210 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6211 { 6212 int res, i; 6213 int n; 6214 6215 n = 8; 6216 i = 0; 6217 6218 if (!s) 6219 return -EINVAL; 6220 6221 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6222 n = 16; 6223 6224 for (i = 0 ; i < n; i++) { 6225 res = thermal_get_sensor(i, &s->temp[i]); 6226 if (res) 6227 return res; 6228 } 6229 6230 return n; 6231 } 6232 thermal_dump_all_sensors(void)6233 static void thermal_dump_all_sensors(void) 6234 { 6235 int n, i; 6236 struct ibm_thermal_sensors_struct t; 6237 6238 n = thermal_get_sensors(&t); 6239 if (n <= 0) 6240 return; 6241 6242 pr_notice("temperatures (Celsius):"); 6243 6244 for (i = 0; i < n; i++) { 6245 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6246 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6247 else 6248 pr_cont(" N/A"); 6249 } 6250 6251 pr_cont("\n"); 6252 } 6253 6254 /* sysfs temp##_input -------------------------------------------------- */ 6255 thermal_temp_input_show(struct device * dev,struct device_attribute * attr,char * buf)6256 static ssize_t thermal_temp_input_show(struct device *dev, 6257 struct device_attribute *attr, 6258 char *buf) 6259 { 6260 struct sensor_device_attribute *sensor_attr = 6261 to_sensor_dev_attr(attr); 6262 int idx = sensor_attr->index; 6263 s32 value; 6264 int res; 6265 6266 res = thermal_get_sensor(idx, &value); 6267 if (res) 6268 return res; 6269 if (value == TPACPI_THERMAL_SENSOR_NA) 6270 return -ENXIO; 6271 6272 return sysfs_emit(buf, "%d\n", value); 6273 } 6274 6275 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6276 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6277 thermal_temp_input_show, NULL, _idxB) 6278 6279 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6280 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6281 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6282 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6283 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6284 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6285 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6286 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6287 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6288 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6289 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6290 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6291 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6292 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6293 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6294 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6295 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6296 }; 6297 6298 #define THERMAL_ATTRS(X) \ 6299 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6300 6301 static struct attribute *thermal_temp_input_attr[] = { 6302 THERMAL_ATTRS(0), 6303 THERMAL_ATTRS(1), 6304 THERMAL_ATTRS(2), 6305 THERMAL_ATTRS(3), 6306 THERMAL_ATTRS(4), 6307 THERMAL_ATTRS(5), 6308 THERMAL_ATTRS(6), 6309 THERMAL_ATTRS(7), 6310 THERMAL_ATTRS(8), 6311 THERMAL_ATTRS(9), 6312 THERMAL_ATTRS(10), 6313 THERMAL_ATTRS(11), 6314 THERMAL_ATTRS(12), 6315 THERMAL_ATTRS(13), 6316 THERMAL_ATTRS(14), 6317 THERMAL_ATTRS(15), 6318 NULL 6319 }; 6320 thermal_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)6321 static umode_t thermal_attr_is_visible(struct kobject *kobj, 6322 struct attribute *attr, int n) 6323 { 6324 if (thermal_read_mode == TPACPI_THERMAL_NONE) 6325 return 0; 6326 6327 if (attr == THERMAL_ATTRS(8) || attr == THERMAL_ATTRS(9) || 6328 attr == THERMAL_ATTRS(10) || attr == THERMAL_ATTRS(11) || 6329 attr == THERMAL_ATTRS(12) || attr == THERMAL_ATTRS(13) || 6330 attr == THERMAL_ATTRS(14) || attr == THERMAL_ATTRS(15)) { 6331 if (thermal_read_mode != TPACPI_THERMAL_TPEC_16) 6332 return 0; 6333 } 6334 6335 return attr->mode; 6336 } 6337 6338 static const struct attribute_group thermal_attr_group = { 6339 .is_visible = thermal_attr_is_visible, 6340 .attrs = thermal_temp_input_attr, 6341 }; 6342 6343 #undef THERMAL_SENSOR_ATTR_TEMP 6344 #undef THERMAL_ATTRS 6345 temp1_label_show(struct device * dev,struct device_attribute * attr,char * buf)6346 static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6347 { 6348 return sysfs_emit(buf, "CPU\n"); 6349 } 6350 static DEVICE_ATTR_RO(temp1_label); 6351 temp2_label_show(struct device * dev,struct device_attribute * attr,char * buf)6352 static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6353 { 6354 return sysfs_emit(buf, "GPU\n"); 6355 } 6356 static DEVICE_ATTR_RO(temp2_label); 6357 6358 static struct attribute *temp_label_attributes[] = { 6359 &dev_attr_temp1_label.attr, 6360 &dev_attr_temp2_label.attr, 6361 NULL 6362 }; 6363 temp_label_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)6364 static umode_t temp_label_attr_is_visible(struct kobject *kobj, 6365 struct attribute *attr, int n) 6366 { 6367 return thermal_use_labels ? attr->mode : 0; 6368 } 6369 6370 static const struct attribute_group temp_label_attr_group = { 6371 .is_visible = temp_label_attr_is_visible, 6372 .attrs = temp_label_attributes, 6373 }; 6374 6375 /* --------------------------------------------------------------------- */ 6376 thermal_init(struct ibm_init_struct * iibm)6377 static int __init thermal_init(struct ibm_init_struct *iibm) 6378 { 6379 u8 t, ta1, ta2, ver = 0; 6380 int i; 6381 int acpi_tmp7; 6382 6383 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6384 6385 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6386 6387 if (thinkpad_id.ec_model) { 6388 /* 6389 * Direct EC access mode: sensors at registers 6390 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6391 * non-implemented, thermal sensors return 0x80 when 6392 * not available 6393 * The above rule is unfortunately flawed. This has been seen with 6394 * 0xC2 (power supply ID) causing thermal control problems. 6395 * The EC version can be determined by offset 0xEF and at least for 6396 * version 3 the Lenovo firmware team confirmed that registers 0xC0-0xC7 6397 * are not thermal registers. 6398 */ 6399 if (!acpi_ec_read(TP_EC_FUNCREV, &ver)) 6400 pr_warn("Thinkpad ACPI EC unable to access EC version\n"); 6401 6402 ta1 = ta2 = 0; 6403 for (i = 0; i < 8; i++) { 6404 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6405 ta1 |= t; 6406 } else { 6407 ta1 = 0; 6408 break; 6409 } 6410 if (ver < 3) { 6411 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6412 ta2 |= t; 6413 } else { 6414 ta1 = 0; 6415 break; 6416 } 6417 } 6418 } 6419 if (ta1 == 0) { 6420 /* This is sheer paranoia, but we handle it anyway */ 6421 if (acpi_tmp7) { 6422 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6423 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6424 } else { 6425 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6426 thermal_read_mode = TPACPI_THERMAL_NONE; 6427 } 6428 } else { 6429 if (ver >= 3) { 6430 thermal_read_mode = TPACPI_THERMAL_TPEC_8; 6431 thermal_use_labels = true; 6432 } else { 6433 thermal_read_mode = 6434 (ta2 != 0) ? 6435 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6436 } 6437 } 6438 } else if (acpi_tmp7) { 6439 if (tpacpi_is_ibm() && 6440 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6441 /* 600e/x, 770e, 770x */ 6442 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6443 } else { 6444 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6445 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6446 } 6447 } else { 6448 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6449 thermal_read_mode = TPACPI_THERMAL_NONE; 6450 } 6451 6452 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6453 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6454 thermal_read_mode); 6455 6456 return thermal_read_mode != TPACPI_THERMAL_NONE ? 0 : -ENODEV; 6457 } 6458 thermal_read(struct seq_file * m)6459 static int thermal_read(struct seq_file *m) 6460 { 6461 int n, i; 6462 struct ibm_thermal_sensors_struct t; 6463 6464 n = thermal_get_sensors(&t); 6465 if (unlikely(n < 0)) 6466 return n; 6467 6468 seq_printf(m, "temperatures:\t"); 6469 6470 if (n > 0) { 6471 for (i = 0; i < (n - 1); i++) 6472 seq_printf(m, "%d ", t.temp[i] / 1000); 6473 seq_printf(m, "%d\n", t.temp[i] / 1000); 6474 } else 6475 seq_printf(m, "not supported\n"); 6476 6477 return 0; 6478 } 6479 6480 static struct ibm_struct thermal_driver_data = { 6481 .name = "thermal", 6482 .read = thermal_read, 6483 }; 6484 6485 /************************************************************************* 6486 * Backlight/brightness subdriver 6487 */ 6488 6489 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6490 6491 /* 6492 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6493 * CMOS NVRAM byte 0x5E, bits 0-3. 6494 * 6495 * EC HBRV (0x31) has the following layout 6496 * Bit 7: unknown function 6497 * Bit 6: unknown function 6498 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6499 * Bit 4: must be set to zero to avoid problems 6500 * Bit 3-0: backlight brightness level 6501 * 6502 * brightness_get_raw returns status data in the HBRV layout 6503 * 6504 * WARNING: The X61 has been verified to use HBRV for something else, so 6505 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6506 * testing on the very early *60 Lenovo models... 6507 */ 6508 6509 enum { 6510 TP_EC_BACKLIGHT = 0x31, 6511 6512 /* TP_EC_BACKLIGHT bitmasks */ 6513 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6514 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6515 TP_EC_BACKLIGHT_MAPSW = 0x20, 6516 }; 6517 6518 enum tpacpi_brightness_access_mode { 6519 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6520 TPACPI_BRGHT_MODE_EC, /* EC control */ 6521 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6522 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6523 TPACPI_BRGHT_MODE_MAX 6524 }; 6525 6526 static struct backlight_device *ibm_backlight_device; 6527 6528 static enum tpacpi_brightness_access_mode brightness_mode = 6529 TPACPI_BRGHT_MODE_MAX; 6530 6531 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6532 6533 static struct mutex brightness_mutex; 6534 6535 /* NVRAM brightness access */ tpacpi_brightness_nvram_get(void)6536 static unsigned int tpacpi_brightness_nvram_get(void) 6537 { 6538 u8 lnvram; 6539 6540 lockdep_assert_held(&brightness_mutex); 6541 6542 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6543 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6544 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6545 lnvram &= bright_maxlvl; 6546 6547 return lnvram; 6548 } 6549 tpacpi_brightness_checkpoint_nvram(void)6550 static void tpacpi_brightness_checkpoint_nvram(void) 6551 { 6552 u8 lec = 0; 6553 u8 b_nvram; 6554 6555 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6556 return; 6557 6558 vdbg_printk(TPACPI_DBG_BRGHT, 6559 "trying to checkpoint backlight level to NVRAM...\n"); 6560 6561 if (mutex_lock_killable(&brightness_mutex) < 0) 6562 return; 6563 6564 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6565 goto unlock; 6566 lec &= TP_EC_BACKLIGHT_LVLMSK; 6567 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6568 6569 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6570 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6571 /* NVRAM needs update */ 6572 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6573 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6574 b_nvram |= lec; 6575 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6576 dbg_printk(TPACPI_DBG_BRGHT, 6577 "updated NVRAM backlight level to %u (0x%02x)\n", 6578 (unsigned int) lec, (unsigned int) b_nvram); 6579 } else 6580 vdbg_printk(TPACPI_DBG_BRGHT, 6581 "NVRAM backlight level already is %u (0x%02x)\n", 6582 (unsigned int) lec, (unsigned int) b_nvram); 6583 6584 unlock: 6585 mutex_unlock(&brightness_mutex); 6586 } 6587 6588 tpacpi_brightness_get_raw(int * status)6589 static int tpacpi_brightness_get_raw(int *status) 6590 { 6591 u8 lec = 0; 6592 6593 lockdep_assert_held(&brightness_mutex); 6594 6595 switch (brightness_mode) { 6596 case TPACPI_BRGHT_MODE_UCMS_STEP: 6597 *status = tpacpi_brightness_nvram_get(); 6598 return 0; 6599 case TPACPI_BRGHT_MODE_EC: 6600 case TPACPI_BRGHT_MODE_ECNVRAM: 6601 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6602 return -EIO; 6603 *status = lec; 6604 return 0; 6605 default: 6606 return -ENXIO; 6607 } 6608 } 6609 6610 /* do NOT call with illegal backlight level value */ tpacpi_brightness_set_ec(unsigned int value)6611 static int tpacpi_brightness_set_ec(unsigned int value) 6612 { 6613 u8 lec = 0; 6614 6615 lockdep_assert_held(&brightness_mutex); 6616 6617 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6618 return -EIO; 6619 6620 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6621 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6622 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6623 return -EIO; 6624 6625 return 0; 6626 } 6627 tpacpi_brightness_set_ucmsstep(unsigned int value)6628 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6629 { 6630 int cmos_cmd, inc; 6631 unsigned int current_value, i; 6632 6633 lockdep_assert_held(&brightness_mutex); 6634 6635 current_value = tpacpi_brightness_nvram_get(); 6636 6637 if (value == current_value) 6638 return 0; 6639 6640 cmos_cmd = (value > current_value) ? 6641 TP_CMOS_BRIGHTNESS_UP : 6642 TP_CMOS_BRIGHTNESS_DOWN; 6643 inc = (value > current_value) ? 1 : -1; 6644 6645 for (i = current_value; i != value; i += inc) 6646 if (issue_thinkpad_cmos_command(cmos_cmd)) 6647 return -EIO; 6648 6649 return 0; 6650 } 6651 6652 /* May return EINTR which can always be mapped to ERESTARTSYS */ brightness_set(unsigned int value)6653 static int brightness_set(unsigned int value) 6654 { 6655 int res; 6656 6657 if (value > bright_maxlvl) 6658 return -EINVAL; 6659 6660 vdbg_printk(TPACPI_DBG_BRGHT, 6661 "set backlight level to %d\n", value); 6662 6663 res = mutex_lock_killable(&brightness_mutex); 6664 if (res < 0) 6665 return res; 6666 6667 switch (brightness_mode) { 6668 case TPACPI_BRGHT_MODE_EC: 6669 case TPACPI_BRGHT_MODE_ECNVRAM: 6670 res = tpacpi_brightness_set_ec(value); 6671 break; 6672 case TPACPI_BRGHT_MODE_UCMS_STEP: 6673 res = tpacpi_brightness_set_ucmsstep(value); 6674 break; 6675 default: 6676 res = -ENXIO; 6677 } 6678 6679 mutex_unlock(&brightness_mutex); 6680 return res; 6681 } 6682 6683 /* sysfs backlight class ----------------------------------------------- */ 6684 brightness_update_status(struct backlight_device * bd)6685 static int brightness_update_status(struct backlight_device *bd) 6686 { 6687 int level = backlight_get_brightness(bd); 6688 6689 dbg_printk(TPACPI_DBG_BRGHT, 6690 "backlight: attempt to set level to %d\n", 6691 level); 6692 6693 /* it is the backlight class's job (caller) to handle 6694 * EINTR and other errors properly */ 6695 return brightness_set(level); 6696 } 6697 brightness_get(struct backlight_device * bd)6698 static int brightness_get(struct backlight_device *bd) 6699 { 6700 int status, res; 6701 6702 res = mutex_lock_killable(&brightness_mutex); 6703 if (res < 0) 6704 return 0; 6705 6706 res = tpacpi_brightness_get_raw(&status); 6707 6708 mutex_unlock(&brightness_mutex); 6709 6710 if (res < 0) 6711 return 0; 6712 6713 return status & TP_EC_BACKLIGHT_LVLMSK; 6714 } 6715 tpacpi_brightness_notify_change(void)6716 static void tpacpi_brightness_notify_change(void) 6717 { 6718 backlight_force_update(ibm_backlight_device, 6719 BACKLIGHT_UPDATE_HOTKEY); 6720 } 6721 6722 static const struct backlight_ops ibm_backlight_data = { 6723 .get_brightness = brightness_get, 6724 .update_status = brightness_update_status, 6725 }; 6726 6727 /* --------------------------------------------------------------------- */ 6728 tpacpi_evaluate_bcl(struct acpi_device * adev,void * not_used)6729 static int __init tpacpi_evaluate_bcl(struct acpi_device *adev, void *not_used) 6730 { 6731 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6732 union acpi_object *obj; 6733 acpi_status status; 6734 int rc; 6735 6736 status = acpi_evaluate_object(adev->handle, "_BCL", NULL, &buffer); 6737 if (ACPI_FAILURE(status)) 6738 return 0; 6739 6740 obj = buffer.pointer; 6741 if (!obj || obj->type != ACPI_TYPE_PACKAGE) { 6742 acpi_handle_info(adev->handle, 6743 "Unknown _BCL data, please report this to %s\n", 6744 TPACPI_MAIL); 6745 rc = 0; 6746 } else { 6747 rc = obj->package.count; 6748 } 6749 kfree(obj); 6750 6751 return rc; 6752 } 6753 6754 /* 6755 * Call _BCL method of video device. On some ThinkPads this will 6756 * switch the firmware to the ACPI brightness control mode. 6757 */ 6758 tpacpi_query_bcl_levels(acpi_handle handle)6759 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6760 { 6761 struct acpi_device *device; 6762 6763 device = acpi_fetch_acpi_dev(handle); 6764 if (!device) 6765 return 0; 6766 6767 return acpi_dev_for_each_child(device, tpacpi_evaluate_bcl, NULL); 6768 } 6769 6770 6771 /* 6772 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6773 */ tpacpi_check_std_acpi_brightness_support(void)6774 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6775 { 6776 acpi_handle video_device; 6777 int bcl_levels = 0; 6778 6779 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6780 if (video_device) 6781 bcl_levels = tpacpi_query_bcl_levels(video_device); 6782 6783 tp_features.bright_acpimode = (bcl_levels > 0); 6784 6785 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6786 } 6787 6788 /* 6789 * These are only useful for models that have only one possibility 6790 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6791 * these quirks. 6792 */ 6793 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6794 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6795 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6796 6797 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6798 /* Models with ATI GPUs known to require ECNVRAM mode */ 6799 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6800 6801 /* Models with ATI GPUs that can use ECNVRAM */ 6802 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6803 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6804 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6805 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6806 6807 /* Models with Intel Extreme Graphics 2 */ 6808 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6809 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6810 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6811 6812 /* Models with Intel GMA900 */ 6813 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6814 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6815 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6816 }; 6817 6818 /* 6819 * Returns < 0 for error, otherwise sets tp_features.bright_* 6820 * and bright_maxlvl. 6821 */ tpacpi_detect_brightness_capabilities(void)6822 static void __init tpacpi_detect_brightness_capabilities(void) 6823 { 6824 unsigned int b; 6825 6826 vdbg_printk(TPACPI_DBG_INIT, 6827 "detecting firmware brightness interface capabilities\n"); 6828 6829 /* we could run a quirks check here (same table used by 6830 * brightness_init) if needed */ 6831 6832 /* 6833 * We always attempt to detect acpi support, so as to switch 6834 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6835 * going to publish a backlight interface 6836 */ 6837 b = tpacpi_check_std_acpi_brightness_support(); 6838 switch (b) { 6839 case 16: 6840 bright_maxlvl = 15; 6841 break; 6842 case 8: 6843 case 0: 6844 bright_maxlvl = 7; 6845 break; 6846 default: 6847 tp_features.bright_unkfw = 1; 6848 bright_maxlvl = b - 1; 6849 } 6850 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6851 } 6852 brightness_init(struct ibm_init_struct * iibm)6853 static int __init brightness_init(struct ibm_init_struct *iibm) 6854 { 6855 struct backlight_properties props; 6856 int b; 6857 unsigned long quirks; 6858 6859 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6860 6861 mutex_init(&brightness_mutex); 6862 6863 quirks = tpacpi_check_quirks(brightness_quirk_table, 6864 ARRAY_SIZE(brightness_quirk_table)); 6865 6866 /* tpacpi_detect_brightness_capabilities() must have run already */ 6867 6868 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6869 if (tp_features.bright_unkfw) 6870 return -ENODEV; 6871 6872 if (!brightness_enable) { 6873 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6874 "brightness support disabled by module parameter\n"); 6875 return -ENODEV; 6876 } 6877 6878 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6879 if (brightness_enable > 1) { 6880 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6881 return -ENODEV; 6882 } else if (brightness_enable == 1) { 6883 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6884 return -ENODEV; 6885 } 6886 } else if (!tp_features.bright_acpimode) { 6887 pr_notice("ACPI backlight interface not available\n"); 6888 return -ENODEV; 6889 } 6890 6891 pr_notice("ACPI native brightness control enabled\n"); 6892 6893 /* 6894 * Check for module parameter bogosity, note that we 6895 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6896 * able to detect "unspecified" 6897 */ 6898 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6899 return -EINVAL; 6900 6901 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 6902 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 6903 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 6904 if (quirks & TPACPI_BRGHT_Q_EC) 6905 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 6906 else 6907 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 6908 6909 dbg_printk(TPACPI_DBG_BRGHT, 6910 "driver auto-selected brightness_mode=%d\n", 6911 brightness_mode); 6912 } 6913 6914 /* Safety */ 6915 if (!tpacpi_is_ibm() && 6916 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 6917 brightness_mode == TPACPI_BRGHT_MODE_EC)) 6918 return -EINVAL; 6919 6920 if (tpacpi_brightness_get_raw(&b) < 0) 6921 return -ENODEV; 6922 6923 memset(&props, 0, sizeof(struct backlight_properties)); 6924 props.type = BACKLIGHT_PLATFORM; 6925 props.max_brightness = bright_maxlvl; 6926 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 6927 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 6928 NULL, NULL, 6929 &ibm_backlight_data, 6930 &props); 6931 if (IS_ERR(ibm_backlight_device)) { 6932 int rc = PTR_ERR(ibm_backlight_device); 6933 ibm_backlight_device = NULL; 6934 pr_err("Could not register backlight device\n"); 6935 return rc; 6936 } 6937 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6938 "brightness is supported\n"); 6939 6940 if (quirks & TPACPI_BRGHT_Q_ASK) { 6941 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 6942 brightness_mode); 6943 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 6944 TPACPI_MAIL); 6945 } 6946 6947 /* Added by mistake in early 2007. Probably useless, but it could 6948 * be working around some unknown firmware problem where the value 6949 * read at startup doesn't match the real hardware state... so leave 6950 * it in place just in case */ 6951 backlight_update_status(ibm_backlight_device); 6952 6953 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6954 "brightness: registering brightness hotkeys as change notification\n"); 6955 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 6956 | TP_ACPI_HKEY_BRGHTUP_MASK 6957 | TP_ACPI_HKEY_BRGHTDWN_MASK); 6958 return 0; 6959 } 6960 brightness_suspend(void)6961 static void brightness_suspend(void) 6962 { 6963 tpacpi_brightness_checkpoint_nvram(); 6964 } 6965 brightness_shutdown(void)6966 static void brightness_shutdown(void) 6967 { 6968 tpacpi_brightness_checkpoint_nvram(); 6969 } 6970 brightness_exit(void)6971 static void brightness_exit(void) 6972 { 6973 if (ibm_backlight_device) { 6974 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 6975 "calling backlight_device_unregister()\n"); 6976 backlight_device_unregister(ibm_backlight_device); 6977 } 6978 6979 tpacpi_brightness_checkpoint_nvram(); 6980 } 6981 brightness_read(struct seq_file * m)6982 static int brightness_read(struct seq_file *m) 6983 { 6984 int level; 6985 6986 level = brightness_get(NULL); 6987 if (level < 0) { 6988 seq_printf(m, "level:\t\tunreadable\n"); 6989 } else { 6990 seq_printf(m, "level:\t\t%d\n", level); 6991 seq_printf(m, "commands:\tup, down\n"); 6992 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 6993 bright_maxlvl); 6994 } 6995 6996 return 0; 6997 } 6998 brightness_write(char * buf)6999 static int brightness_write(char *buf) 7000 { 7001 int level; 7002 int rc; 7003 char *cmd; 7004 7005 level = brightness_get(NULL); 7006 if (level < 0) 7007 return level; 7008 7009 while ((cmd = strsep(&buf, ","))) { 7010 if (strstarts(cmd, "up")) { 7011 if (level < bright_maxlvl) 7012 level++; 7013 } else if (strstarts(cmd, "down")) { 7014 if (level > 0) 7015 level--; 7016 } else if (sscanf(cmd, "level %d", &level) == 1 && 7017 level >= 0 && level <= bright_maxlvl) { 7018 /* new level set */ 7019 } else 7020 return -EINVAL; 7021 } 7022 7023 tpacpi_disclose_usertask("procfs brightness", 7024 "set level to %d\n", level); 7025 7026 /* 7027 * Now we know what the final level should be, so we try to set it. 7028 * Doing it this way makes the syscall restartable in case of EINTR 7029 */ 7030 rc = brightness_set(level); 7031 if (!rc && ibm_backlight_device) 7032 backlight_force_update(ibm_backlight_device, 7033 BACKLIGHT_UPDATE_SYSFS); 7034 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7035 } 7036 7037 static struct ibm_struct brightness_driver_data = { 7038 .name = "brightness", 7039 .read = brightness_read, 7040 .write = brightness_write, 7041 .exit = brightness_exit, 7042 .suspend = brightness_suspend, 7043 .shutdown = brightness_shutdown, 7044 }; 7045 7046 /************************************************************************* 7047 * Volume subdriver 7048 */ 7049 7050 /* 7051 * IBM ThinkPads have a simple volume controller with MUTE gating. 7052 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7053 * 7054 * Since the *61 series (and probably also the later *60 series), Lenovo 7055 * ThinkPads only implement the MUTE gate. 7056 * 7057 * EC register 0x30 7058 * Bit 6: MUTE (1 mutes sound) 7059 * Bit 3-0: Volume 7060 * Other bits should be zero as far as we know. 7061 * 7062 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7063 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7064 * such as bit 7 which is used to detect repeated presses of MUTE, 7065 * and we leave them unchanged. 7066 * 7067 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7068 * in response to user input. Unfortunately, this rarely works well. 7069 * The laptop changes the state of its internal MUTE gate and, on some 7070 * models, sends KEY_MUTE, causing any user code that responds to the 7071 * mute button to get confused. The hardware MUTE gate is also 7072 * unnecessary, since user code can handle the mute button without 7073 * kernel or EC help. 7074 * 7075 * To avoid confusing userspace, we simply disable all EC-based mute 7076 * and volume controls when possible. 7077 */ 7078 7079 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7080 7081 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7082 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7083 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7084 7085 #if SNDRV_CARDS <= 32 7086 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7087 #else 7088 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7089 #endif 7090 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7091 static char *alsa_id = "ThinkPadEC"; 7092 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7093 7094 struct tpacpi_alsa_data { 7095 struct snd_card *card; 7096 struct snd_ctl_elem_id *ctl_mute_id; 7097 struct snd_ctl_elem_id *ctl_vol_id; 7098 }; 7099 7100 static struct snd_card *alsa_card; 7101 7102 enum { 7103 TP_EC_AUDIO = 0x30, 7104 7105 /* TP_EC_AUDIO bits */ 7106 TP_EC_AUDIO_MUTESW = 6, 7107 7108 /* TP_EC_AUDIO bitmasks */ 7109 TP_EC_AUDIO_LVL_MSK = 0x0F, 7110 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7111 7112 /* Maximum volume */ 7113 TP_EC_VOLUME_MAX = 14, 7114 }; 7115 7116 enum tpacpi_volume_access_mode { 7117 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7118 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7119 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7120 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7121 TPACPI_VOL_MODE_MAX 7122 }; 7123 7124 enum tpacpi_volume_capabilities { 7125 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7126 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7127 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7128 TPACPI_VOL_CAP_MAX 7129 }; 7130 7131 enum tpacpi_mute_btn_mode { 7132 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7133 /* We don't know what mode 1 is. */ 7134 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7135 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7136 }; 7137 7138 static enum tpacpi_volume_access_mode volume_mode = 7139 TPACPI_VOL_MODE_MAX; 7140 7141 static enum tpacpi_volume_capabilities volume_capabilities; 7142 static bool volume_control_allowed; 7143 static bool software_mute_requested = true; 7144 static bool software_mute_active; 7145 static int software_mute_orig_mode; 7146 7147 /* 7148 * Used to syncronize writers to TP_EC_AUDIO and 7149 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7150 */ 7151 static struct mutex volume_mutex; 7152 tpacpi_volume_checkpoint_nvram(void)7153 static void tpacpi_volume_checkpoint_nvram(void) 7154 { 7155 u8 lec = 0; 7156 u8 b_nvram; 7157 u8 ec_mask; 7158 7159 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7160 return; 7161 if (!volume_control_allowed) 7162 return; 7163 if (software_mute_active) 7164 return; 7165 7166 vdbg_printk(TPACPI_DBG_MIXER, 7167 "trying to checkpoint mixer state to NVRAM...\n"); 7168 7169 if (tp_features.mixer_no_level_control) 7170 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7171 else 7172 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7173 7174 if (mutex_lock_killable(&volume_mutex) < 0) 7175 return; 7176 7177 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7178 goto unlock; 7179 lec &= ec_mask; 7180 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7181 7182 if (lec != (b_nvram & ec_mask)) { 7183 /* NVRAM needs update */ 7184 b_nvram &= ~ec_mask; 7185 b_nvram |= lec; 7186 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7187 dbg_printk(TPACPI_DBG_MIXER, 7188 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7189 (unsigned int) lec, (unsigned int) b_nvram); 7190 } else { 7191 vdbg_printk(TPACPI_DBG_MIXER, 7192 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7193 (unsigned int) lec, (unsigned int) b_nvram); 7194 } 7195 7196 unlock: 7197 mutex_unlock(&volume_mutex); 7198 } 7199 volume_get_status_ec(u8 * status)7200 static int volume_get_status_ec(u8 *status) 7201 { 7202 u8 s; 7203 7204 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7205 return -EIO; 7206 7207 *status = s; 7208 7209 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7210 7211 return 0; 7212 } 7213 volume_get_status(u8 * status)7214 static int volume_get_status(u8 *status) 7215 { 7216 return volume_get_status_ec(status); 7217 } 7218 volume_set_status_ec(const u8 status)7219 static int volume_set_status_ec(const u8 status) 7220 { 7221 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7222 return -EIO; 7223 7224 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7225 7226 /* 7227 * On X200s, and possibly on others, it can take a while for 7228 * reads to become correct. 7229 */ 7230 msleep(1); 7231 7232 return 0; 7233 } 7234 volume_set_status(const u8 status)7235 static int volume_set_status(const u8 status) 7236 { 7237 return volume_set_status_ec(status); 7238 } 7239 7240 /* returns < 0 on error, 0 on no change, 1 on change */ __volume_set_mute_ec(const bool mute)7241 static int __volume_set_mute_ec(const bool mute) 7242 { 7243 int rc; 7244 u8 s, n; 7245 7246 if (mutex_lock_killable(&volume_mutex) < 0) 7247 return -EINTR; 7248 7249 rc = volume_get_status_ec(&s); 7250 if (rc) 7251 goto unlock; 7252 7253 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7254 s & ~TP_EC_AUDIO_MUTESW_MSK; 7255 7256 if (n != s) { 7257 rc = volume_set_status_ec(n); 7258 if (!rc) 7259 rc = 1; 7260 } 7261 7262 unlock: 7263 mutex_unlock(&volume_mutex); 7264 return rc; 7265 } 7266 volume_alsa_set_mute(const bool mute)7267 static int volume_alsa_set_mute(const bool mute) 7268 { 7269 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7270 (mute) ? "" : "un"); 7271 return __volume_set_mute_ec(mute); 7272 } 7273 volume_set_mute(const bool mute)7274 static int volume_set_mute(const bool mute) 7275 { 7276 int rc; 7277 7278 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7279 (mute) ? "" : "un"); 7280 7281 rc = __volume_set_mute_ec(mute); 7282 return (rc < 0) ? rc : 0; 7283 } 7284 7285 /* returns < 0 on error, 0 on no change, 1 on change */ __volume_set_volume_ec(const u8 vol)7286 static int __volume_set_volume_ec(const u8 vol) 7287 { 7288 int rc; 7289 u8 s, n; 7290 7291 if (vol > TP_EC_VOLUME_MAX) 7292 return -EINVAL; 7293 7294 if (mutex_lock_killable(&volume_mutex) < 0) 7295 return -EINTR; 7296 7297 rc = volume_get_status_ec(&s); 7298 if (rc) 7299 goto unlock; 7300 7301 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7302 7303 if (n != s) { 7304 rc = volume_set_status_ec(n); 7305 if (!rc) 7306 rc = 1; 7307 } 7308 7309 unlock: 7310 mutex_unlock(&volume_mutex); 7311 return rc; 7312 } 7313 volume_set_software_mute(bool startup)7314 static int volume_set_software_mute(bool startup) 7315 { 7316 int result; 7317 7318 if (!tpacpi_is_lenovo()) 7319 return -ENODEV; 7320 7321 if (startup) { 7322 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7323 "HAUM", "qd")) 7324 return -EIO; 7325 7326 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7327 "Initial HAUM setting was %d\n", 7328 software_mute_orig_mode); 7329 } 7330 7331 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7332 (int)TP_EC_MUTE_BTN_NONE)) 7333 return -EIO; 7334 7335 if (result != TP_EC_MUTE_BTN_NONE) 7336 pr_warn("Unexpected SAUM result %d\n", 7337 result); 7338 7339 /* 7340 * In software mute mode, the standard codec controls take 7341 * precendence, so we unmute the ThinkPad HW switch at 7342 * startup. Just on case there are SAUM-capable ThinkPads 7343 * with level controls, set max HW volume as well. 7344 */ 7345 if (tp_features.mixer_no_level_control) 7346 result = volume_set_mute(false); 7347 else 7348 result = volume_set_status(TP_EC_VOLUME_MAX); 7349 7350 if (result != 0) 7351 pr_warn("Failed to unmute the HW mute switch\n"); 7352 7353 return 0; 7354 } 7355 volume_exit_software_mute(void)7356 static void volume_exit_software_mute(void) 7357 { 7358 int r; 7359 7360 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7361 || r != software_mute_orig_mode) 7362 pr_warn("Failed to restore mute mode\n"); 7363 } 7364 volume_alsa_set_volume(const u8 vol)7365 static int volume_alsa_set_volume(const u8 vol) 7366 { 7367 dbg_printk(TPACPI_DBG_MIXER, 7368 "ALSA: trying to set volume level to %hu\n", vol); 7369 return __volume_set_volume_ec(vol); 7370 } 7371 volume_alsa_notify_change(void)7372 static void volume_alsa_notify_change(void) 7373 { 7374 struct tpacpi_alsa_data *d; 7375 7376 if (alsa_card && alsa_card->private_data) { 7377 d = alsa_card->private_data; 7378 if (d->ctl_mute_id) 7379 snd_ctl_notify(alsa_card, 7380 SNDRV_CTL_EVENT_MASK_VALUE, 7381 d->ctl_mute_id); 7382 if (d->ctl_vol_id) 7383 snd_ctl_notify(alsa_card, 7384 SNDRV_CTL_EVENT_MASK_VALUE, 7385 d->ctl_vol_id); 7386 } 7387 } 7388 volume_alsa_vol_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)7389 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7390 struct snd_ctl_elem_info *uinfo) 7391 { 7392 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7393 uinfo->count = 1; 7394 uinfo->value.integer.min = 0; 7395 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7396 return 0; 7397 } 7398 volume_alsa_vol_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)7399 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7400 struct snd_ctl_elem_value *ucontrol) 7401 { 7402 u8 s; 7403 int rc; 7404 7405 rc = volume_get_status(&s); 7406 if (rc < 0) 7407 return rc; 7408 7409 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7410 return 0; 7411 } 7412 volume_alsa_vol_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)7413 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7414 struct snd_ctl_elem_value *ucontrol) 7415 { 7416 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7417 ucontrol->value.integer.value[0]); 7418 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7419 } 7420 7421 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7422 volume_alsa_mute_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)7423 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7424 struct snd_ctl_elem_value *ucontrol) 7425 { 7426 u8 s; 7427 int rc; 7428 7429 rc = volume_get_status(&s); 7430 if (rc < 0) 7431 return rc; 7432 7433 ucontrol->value.integer.value[0] = 7434 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7435 return 0; 7436 } 7437 volume_alsa_mute_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)7438 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7439 struct snd_ctl_elem_value *ucontrol) 7440 { 7441 tpacpi_disclose_usertask("ALSA", "%smute\n", 7442 ucontrol->value.integer.value[0] ? 7443 "un" : ""); 7444 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7445 } 7446 7447 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7448 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7449 .name = "Console Playback Volume", 7450 .index = 0, 7451 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7452 .info = volume_alsa_vol_info, 7453 .get = volume_alsa_vol_get, 7454 }; 7455 7456 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7457 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7458 .name = "Console Playback Switch", 7459 .index = 0, 7460 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7461 .info = volume_alsa_mute_info, 7462 .get = volume_alsa_mute_get, 7463 }; 7464 volume_suspend(void)7465 static void volume_suspend(void) 7466 { 7467 tpacpi_volume_checkpoint_nvram(); 7468 } 7469 volume_resume(void)7470 static void volume_resume(void) 7471 { 7472 if (software_mute_active) { 7473 if (volume_set_software_mute(false) < 0) 7474 pr_warn("Failed to restore software mute\n"); 7475 } else { 7476 volume_alsa_notify_change(); 7477 } 7478 } 7479 volume_shutdown(void)7480 static void volume_shutdown(void) 7481 { 7482 tpacpi_volume_checkpoint_nvram(); 7483 } 7484 volume_exit(void)7485 static void volume_exit(void) 7486 { 7487 if (alsa_card) { 7488 snd_card_free(alsa_card); 7489 alsa_card = NULL; 7490 } 7491 7492 tpacpi_volume_checkpoint_nvram(); 7493 7494 if (software_mute_active) 7495 volume_exit_software_mute(); 7496 } 7497 volume_create_alsa_mixer(void)7498 static int __init volume_create_alsa_mixer(void) 7499 { 7500 struct snd_card *card; 7501 struct tpacpi_alsa_data *data; 7502 struct snd_kcontrol *ctl_vol; 7503 struct snd_kcontrol *ctl_mute; 7504 int rc; 7505 7506 rc = snd_card_new(&tpacpi_pdev->dev, 7507 alsa_index, alsa_id, THIS_MODULE, 7508 sizeof(struct tpacpi_alsa_data), &card); 7509 if (rc < 0 || !card) { 7510 pr_err("Failed to create ALSA card structures: %d\n", rc); 7511 return -ENODEV; 7512 } 7513 7514 BUG_ON(!card->private_data); 7515 data = card->private_data; 7516 data->card = card; 7517 7518 strscpy(card->driver, TPACPI_ALSA_DRVNAME, 7519 sizeof(card->driver)); 7520 strscpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7521 sizeof(card->shortname)); 7522 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7523 (thinkpad_id.ec_version_str) ? 7524 thinkpad_id.ec_version_str : "(unknown)"); 7525 snprintf(card->longname, sizeof(card->longname), 7526 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7527 (thinkpad_id.ec_version_str) ? 7528 thinkpad_id.ec_version_str : "unknown"); 7529 7530 if (volume_control_allowed) { 7531 volume_alsa_control_vol.put = volume_alsa_vol_put; 7532 volume_alsa_control_vol.access = 7533 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7534 7535 volume_alsa_control_mute.put = volume_alsa_mute_put; 7536 volume_alsa_control_mute.access = 7537 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7538 } 7539 7540 if (!tp_features.mixer_no_level_control) { 7541 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7542 rc = snd_ctl_add(card, ctl_vol); 7543 if (rc < 0) { 7544 pr_err("Failed to create ALSA volume control: %d\n", 7545 rc); 7546 goto err_exit; 7547 } 7548 data->ctl_vol_id = &ctl_vol->id; 7549 } 7550 7551 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7552 rc = snd_ctl_add(card, ctl_mute); 7553 if (rc < 0) { 7554 pr_err("Failed to create ALSA mute control: %d\n", rc); 7555 goto err_exit; 7556 } 7557 data->ctl_mute_id = &ctl_mute->id; 7558 7559 rc = snd_card_register(card); 7560 if (rc < 0) { 7561 pr_err("Failed to register ALSA card: %d\n", rc); 7562 goto err_exit; 7563 } 7564 7565 alsa_card = card; 7566 return 0; 7567 7568 err_exit: 7569 snd_card_free(card); 7570 return -ENODEV; 7571 } 7572 7573 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7574 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7575 7576 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7577 /* Whitelist volume level on all IBM by default */ 7578 { .vendor = PCI_VENDOR_ID_IBM, 7579 .bios = TPACPI_MATCH_ANY, 7580 .ec = TPACPI_MATCH_ANY, 7581 .quirks = TPACPI_VOL_Q_LEVEL }, 7582 7583 /* Lenovo models with volume control (needs confirmation) */ 7584 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7585 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7586 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7587 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7588 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7589 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7590 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7591 7592 /* Whitelist mute-only on all Lenovo by default */ 7593 { .vendor = PCI_VENDOR_ID_LENOVO, 7594 .bios = TPACPI_MATCH_ANY, 7595 .ec = TPACPI_MATCH_ANY, 7596 .quirks = TPACPI_VOL_Q_MUTEONLY } 7597 }; 7598 volume_init(struct ibm_init_struct * iibm)7599 static int __init volume_init(struct ibm_init_struct *iibm) 7600 { 7601 unsigned long quirks; 7602 int rc; 7603 7604 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7605 7606 mutex_init(&volume_mutex); 7607 7608 /* 7609 * Check for module parameter bogosity, note that we 7610 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7611 * able to detect "unspecified" 7612 */ 7613 if (volume_mode > TPACPI_VOL_MODE_MAX) 7614 return -EINVAL; 7615 7616 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7617 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7618 TPACPI_MAIL); 7619 return -ENODEV; 7620 } 7621 7622 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7623 return -EINVAL; 7624 7625 /* 7626 * The ALSA mixer is our primary interface. 7627 * When disabled, don't install the subdriver at all 7628 */ 7629 if (!alsa_enable) { 7630 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7631 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7632 return -ENODEV; 7633 } 7634 7635 quirks = tpacpi_check_quirks(volume_quirk_table, 7636 ARRAY_SIZE(volume_quirk_table)); 7637 7638 switch (volume_capabilities) { 7639 case TPACPI_VOL_CAP_AUTO: 7640 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7641 tp_features.mixer_no_level_control = 1; 7642 else if (quirks & TPACPI_VOL_Q_LEVEL) 7643 tp_features.mixer_no_level_control = 0; 7644 else 7645 return -ENODEV; /* no mixer */ 7646 break; 7647 case TPACPI_VOL_CAP_VOLMUTE: 7648 tp_features.mixer_no_level_control = 0; 7649 break; 7650 case TPACPI_VOL_CAP_MUTEONLY: 7651 tp_features.mixer_no_level_control = 1; 7652 break; 7653 default: 7654 return -ENODEV; 7655 } 7656 7657 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7658 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7659 "using user-supplied volume_capabilities=%d\n", 7660 volume_capabilities); 7661 7662 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7663 volume_mode == TPACPI_VOL_MODE_MAX) { 7664 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7665 7666 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7667 "driver auto-selected volume_mode=%d\n", 7668 volume_mode); 7669 } else { 7670 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7671 "using user-supplied volume_mode=%d\n", 7672 volume_mode); 7673 } 7674 7675 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7676 "mute is supported, volume control is %s\n", 7677 str_supported(!tp_features.mixer_no_level_control)); 7678 7679 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7680 software_mute_active = true; 7681 } else { 7682 rc = volume_create_alsa_mixer(); 7683 if (rc) { 7684 pr_err("Could not create the ALSA mixer interface\n"); 7685 return rc; 7686 } 7687 7688 pr_info("Console audio control enabled, mode: %s\n", 7689 (volume_control_allowed) ? 7690 "override (read/write)" : 7691 "monitor (read only)"); 7692 } 7693 7694 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7695 "registering volume hotkeys as change notification\n"); 7696 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7697 | TP_ACPI_HKEY_VOLUP_MASK 7698 | TP_ACPI_HKEY_VOLDWN_MASK 7699 | TP_ACPI_HKEY_MUTE_MASK); 7700 7701 return 0; 7702 } 7703 volume_read(struct seq_file * m)7704 static int volume_read(struct seq_file *m) 7705 { 7706 u8 status; 7707 7708 if (volume_get_status(&status) < 0) { 7709 seq_printf(m, "level:\t\tunreadable\n"); 7710 } else { 7711 if (tp_features.mixer_no_level_control) 7712 seq_printf(m, "level:\t\tunsupported\n"); 7713 else 7714 seq_printf(m, "level:\t\t%d\n", 7715 status & TP_EC_AUDIO_LVL_MSK); 7716 7717 seq_printf(m, "mute:\t\t%s\n", str_on_off(status & BIT(TP_EC_AUDIO_MUTESW))); 7718 7719 if (volume_control_allowed) { 7720 seq_printf(m, "commands:\tunmute, mute\n"); 7721 if (!tp_features.mixer_no_level_control) { 7722 seq_printf(m, "commands:\tup, down\n"); 7723 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7724 TP_EC_VOLUME_MAX); 7725 } 7726 } 7727 } 7728 7729 return 0; 7730 } 7731 volume_write(char * buf)7732 static int volume_write(char *buf) 7733 { 7734 u8 s; 7735 u8 new_level, new_mute; 7736 int l; 7737 char *cmd; 7738 int rc; 7739 7740 /* 7741 * We do allow volume control at driver startup, so that the 7742 * user can set initial state through the volume=... parameter hack. 7743 */ 7744 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7745 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7746 tp_warned.volume_ctrl_forbidden = 1; 7747 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7748 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7749 } 7750 return -EPERM; 7751 } 7752 7753 rc = volume_get_status(&s); 7754 if (rc < 0) 7755 return rc; 7756 7757 new_level = s & TP_EC_AUDIO_LVL_MSK; 7758 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7759 7760 while ((cmd = strsep(&buf, ","))) { 7761 if (!tp_features.mixer_no_level_control) { 7762 if (strstarts(cmd, "up")) { 7763 if (new_mute) 7764 new_mute = 0; 7765 else if (new_level < TP_EC_VOLUME_MAX) 7766 new_level++; 7767 continue; 7768 } else if (strstarts(cmd, "down")) { 7769 if (new_mute) 7770 new_mute = 0; 7771 else if (new_level > 0) 7772 new_level--; 7773 continue; 7774 } else if (sscanf(cmd, "level %u", &l) == 1 && 7775 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7776 new_level = l; 7777 continue; 7778 } 7779 } 7780 if (strstarts(cmd, "mute")) 7781 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7782 else if (strstarts(cmd, "unmute")) 7783 new_mute = 0; 7784 else 7785 return -EINVAL; 7786 } 7787 7788 if (tp_features.mixer_no_level_control) { 7789 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7790 new_mute ? "" : "un"); 7791 rc = volume_set_mute(!!new_mute); 7792 } else { 7793 tpacpi_disclose_usertask("procfs volume", 7794 "%smute and set level to %d\n", 7795 new_mute ? "" : "un", new_level); 7796 rc = volume_set_status(new_mute | new_level); 7797 } 7798 volume_alsa_notify_change(); 7799 7800 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7801 } 7802 7803 static struct ibm_struct volume_driver_data = { 7804 .name = "volume", 7805 .read = volume_read, 7806 .write = volume_write, 7807 .exit = volume_exit, 7808 .suspend = volume_suspend, 7809 .resume = volume_resume, 7810 .shutdown = volume_shutdown, 7811 }; 7812 7813 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7814 7815 #define alsa_card NULL 7816 volume_alsa_notify_change(void)7817 static inline void volume_alsa_notify_change(void) 7818 { 7819 } 7820 volume_init(struct ibm_init_struct * iibm)7821 static int __init volume_init(struct ibm_init_struct *iibm) 7822 { 7823 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7824 7825 return -ENODEV; 7826 } 7827 7828 static struct ibm_struct volume_driver_data = { 7829 .name = "volume", 7830 }; 7831 7832 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7833 7834 /************************************************************************* 7835 * Fan subdriver 7836 */ 7837 7838 /* 7839 * FAN ACCESS MODES 7840 * 7841 * TPACPI_FAN_RD_ACPI_GFAN: 7842 * ACPI GFAN method: returns fan level 7843 * 7844 * see TPACPI_FAN_WR_ACPI_SFAN 7845 * EC 0x2f (HFSP) not available if GFAN exists 7846 * 7847 * TPACPI_FAN_WR_ACPI_SFAN: 7848 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7849 * 7850 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7851 * it for writing. 7852 * 7853 * TPACPI_FAN_WR_TPEC: 7854 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7855 * Supported on almost all ThinkPads 7856 * 7857 * Fan speed changes of any sort (including those caused by the 7858 * disengaged mode) are usually done slowly by the firmware as the 7859 * maximum amount of fan duty cycle change per second seems to be 7860 * limited. 7861 * 7862 * Reading is not available if GFAN exists. 7863 * Writing is not available if SFAN exists. 7864 * 7865 * Bits 7866 * 7 automatic mode engaged; 7867 * (default operation mode of the ThinkPad) 7868 * fan level is ignored in this mode. 7869 * 6 full speed mode (takes precedence over bit 7); 7870 * not available on all thinkpads. May disable 7871 * the tachometer while the fan controller ramps up 7872 * the speed (which can take up to a few *minutes*). 7873 * Speeds up fan to 100% duty-cycle, which is far above 7874 * the standard RPM levels. It is not impossible that 7875 * it could cause hardware damage. 7876 * 5-3 unused in some models. Extra bits for fan level 7877 * in others, but still useless as all values above 7878 * 7 map to the same speed as level 7 in these models. 7879 * 2-0 fan level (0..7 usually) 7880 * 0x00 = stop 7881 * 0x07 = max (set when temperatures critical) 7882 * Some ThinkPads may have other levels, see 7883 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7884 * 7885 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7886 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7887 * does so, its initial value is meaningless (0x07). 7888 * 7889 * For firmware bugs, refer to: 7890 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7891 * 7892 * ---- 7893 * 7894 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7895 * Main fan tachometer reading (in RPM) 7896 * 7897 * This register is present on all ThinkPads with a new-style EC, and 7898 * it is known not to be present on the A21m/e, and T22, as there is 7899 * something else in offset 0x84 according to the ACPI DSDT. Other 7900 * ThinkPads from this same time period (and earlier) probably lack the 7901 * tachometer as well. 7902 * 7903 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 7904 * was never fixed by IBM to report the EC firmware version string 7905 * probably support the tachometer (like the early X models), so 7906 * detecting it is quite hard. We need more data to know for sure. 7907 * 7908 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 7909 * might result. 7910 * 7911 * FIRMWARE BUG: may go stale while the EC is switching to full speed 7912 * mode. 7913 * 7914 * For firmware bugs, refer to: 7915 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7916 * 7917 * ---- 7918 * 7919 * ThinkPad EC register 0x31 bit 0 (only on select models) 7920 * 7921 * When bit 0 of EC register 0x31 is zero, the tachometer registers 7922 * show the speed of the main fan. When bit 0 of EC register 0x31 7923 * is one, the tachometer registers show the speed of the auxiliary 7924 * fan. 7925 * 7926 * Fan control seems to affect both fans, regardless of the state 7927 * of this bit. 7928 * 7929 * So far, only the firmware for the X60/X61 non-tablet versions 7930 * seem to support this (firmware TP-7M). 7931 * 7932 * TPACPI_FAN_WR_ACPI_FANS: 7933 * ThinkPad X31, X40, X41. Not available in the X60. 7934 * 7935 * FANS ACPI handle: takes three arguments: low speed, medium speed, 7936 * high speed. ACPI DSDT seems to map these three speeds to levels 7937 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 7938 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 7939 * 7940 * The speeds are stored on handles 7941 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 7942 * 7943 * There are three default speed sets, accessible as handles: 7944 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 7945 * 7946 * ACPI DSDT switches which set is in use depending on various 7947 * factors. 7948 * 7949 * TPACPI_FAN_WR_TPEC is also available and should be used to 7950 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 7951 * but the ACPI tables just mention level 7. 7952 * 7953 * TPACPI_FAN_RD_TPEC_NS: 7954 * This mode is used for a few ThinkPads (L13 Yoga Gen2, X13 Yoga Gen2 etc.) 7955 * that are using non-standard EC locations for reporting fan speeds. 7956 * Currently these platforms only provide fan rpm reporting. 7957 * 7958 */ 7959 7960 #define FAN_RPM_CAL_CONST 491520 /* FAN RPM calculation offset for some non-standard ECFW */ 7961 7962 #define FAN_NS_CTRL_STATUS BIT(2) /* Bit which determines control is enabled or not */ 7963 #define FAN_NS_CTRL BIT(4) /* Bit which determines control is by host or EC */ 7964 #define FAN_CLOCK_TPM (22500*60) /* Ticks per minute for a 22.5 kHz clock */ 7965 7966 enum { /* Fan control constants */ 7967 fan_status_offset = 0x2f, /* EC register 0x2f */ 7968 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 7969 * 0x84 must be read before 0x85 */ 7970 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 7971 bit 0 selects which fan is active */ 7972 7973 fan_status_offset_ns = 0x93, /* Special status/control offset for non-standard EC Fan1 */ 7974 fan2_status_offset_ns = 0x96, /* Special status/control offset for non-standard EC Fan2 */ 7975 fan_rpm_status_ns = 0x95, /* Special offset for Fan1 RPM status for non-standard EC */ 7976 fan2_rpm_status_ns = 0x98, /* Special offset for Fan2 RPM status for non-standard EC */ 7977 7978 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 7979 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 7980 7981 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 7982 }; 7983 7984 enum fan_status_access_mode { 7985 TPACPI_FAN_NONE = 0, /* No fan status or control */ 7986 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 7987 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 7988 TPACPI_FAN_RD_TPEC_NS, /* Use non-standard ACPI EC regs (eg: L13 Yoga gen2 etc.) */ 7989 }; 7990 7991 enum fan_control_access_mode { 7992 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 7993 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 7994 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 7995 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 7996 }; 7997 7998 enum fan_control_commands { 7999 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 8000 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 8001 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 8002 * and also watchdog cmd */ 8003 }; 8004 8005 static bool fan_control_allowed; 8006 8007 static enum fan_status_access_mode fan_status_access_mode; 8008 static enum fan_control_access_mode fan_control_access_mode; 8009 static enum fan_control_commands fan_control_commands; 8010 8011 static u8 fan_control_initial_status; 8012 static u8 fan_control_desired_level; 8013 static u8 fan_control_resume_level; 8014 static int fan_watchdog_maxinterval; 8015 8016 static bool fan_with_ns_addr; 8017 static bool ecfw_with_fan_dec_rpm; 8018 static bool fan_speed_in_tpr; 8019 8020 static struct mutex fan_mutex; 8021 8022 static void fan_watchdog_fire(struct work_struct *ignored); 8023 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 8024 8025 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 8026 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 8027 "\\FSPD", /* 600e/x, 770e, 770x */ 8028 ); /* all others */ 8029 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8030 "JFNS", /* 770x-JL */ 8031 ); /* all others */ 8032 8033 /* 8034 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8035 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8036 * be in auto mode (0x80). 8037 * 8038 * This is corrected by any write to HFSP either by the driver, or 8039 * by the firmware. 8040 * 8041 * We assume 0x07 really means auto mode while this quirk is active, 8042 * as this is far more likely than the ThinkPad being in level 7, 8043 * which is only used by the firmware during thermal emergencies. 8044 * 8045 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8046 * TP-70 (T43, R52), which are known to be buggy. 8047 */ 8048 fan_quirk1_setup(void)8049 static void fan_quirk1_setup(void) 8050 { 8051 if (fan_control_initial_status == 0x07) { 8052 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8053 tp_features.fan_ctrl_status_undef = 1; 8054 } 8055 } 8056 fan_quirk1_handle(u8 * fan_status)8057 static void fan_quirk1_handle(u8 *fan_status) 8058 { 8059 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8060 if (*fan_status != fan_control_initial_status) { 8061 /* something changed the HFSP regisnter since 8062 * driver init time, so it is not undefined 8063 * anymore */ 8064 tp_features.fan_ctrl_status_undef = 0; 8065 } else { 8066 /* Return most likely status. In fact, it 8067 * might be the only possible status */ 8068 *fan_status = TP_EC_FAN_AUTO; 8069 } 8070 } 8071 } 8072 8073 /* Select main fan on X60/X61, NOOP on others */ fan_select_fan1(void)8074 static bool fan_select_fan1(void) 8075 { 8076 if (tp_features.second_fan) { 8077 u8 val; 8078 8079 if (ec_read(fan_select_offset, &val) < 0) 8080 return false; 8081 val &= 0xFEU; 8082 if (ec_write(fan_select_offset, val) < 0) 8083 return false; 8084 } 8085 return true; 8086 } 8087 8088 /* Select secondary fan on X60/X61 */ fan_select_fan2(void)8089 static bool fan_select_fan2(void) 8090 { 8091 u8 val; 8092 8093 if (!tp_features.second_fan) 8094 return false; 8095 8096 if (ec_read(fan_select_offset, &val) < 0) 8097 return false; 8098 val |= 0x01U; 8099 if (ec_write(fan_select_offset, val) < 0) 8100 return false; 8101 8102 return true; 8103 } 8104 fan_update_desired_level(u8 status)8105 static void fan_update_desired_level(u8 status) 8106 { 8107 lockdep_assert_held(&fan_mutex); 8108 8109 if ((status & 8110 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8111 if (status > 7) 8112 fan_control_desired_level = 7; 8113 else 8114 fan_control_desired_level = status; 8115 } 8116 } 8117 fan_get_status(u8 * status)8118 static int fan_get_status(u8 *status) 8119 { 8120 u8 s; 8121 8122 /* TODO: 8123 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8124 8125 switch (fan_status_access_mode) { 8126 case TPACPI_FAN_RD_ACPI_GFAN: { 8127 /* 570, 600e/x, 770e, 770x */ 8128 int res; 8129 8130 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8131 return -EIO; 8132 8133 if (likely(status)) 8134 *status = res & 0x07; 8135 8136 break; 8137 } 8138 case TPACPI_FAN_RD_TPEC: 8139 /* all except 570, 600e/x, 770e, 770x */ 8140 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8141 return -EIO; 8142 8143 if (likely(status)) { 8144 *status = s; 8145 fan_quirk1_handle(status); 8146 } 8147 8148 break; 8149 case TPACPI_FAN_RD_TPEC_NS: 8150 /* Default mode is AUTO which means controlled by EC */ 8151 if (!acpi_ec_read(fan_status_offset_ns, &s)) 8152 return -EIO; 8153 8154 if (status) 8155 *status = s; 8156 8157 break; 8158 8159 default: 8160 return -ENXIO; 8161 } 8162 8163 return 0; 8164 } 8165 fan_get_status_safe(u8 * status)8166 static int fan_get_status_safe(u8 *status) 8167 { 8168 int rc; 8169 u8 s; 8170 8171 if (mutex_lock_killable(&fan_mutex)) 8172 return -ERESTARTSYS; 8173 rc = fan_get_status(&s); 8174 /* NS EC doesn't have register with level settings */ 8175 if (!rc && !fan_with_ns_addr) 8176 fan_update_desired_level(s); 8177 mutex_unlock(&fan_mutex); 8178 8179 if (rc) 8180 return rc; 8181 if (status) 8182 *status = s; 8183 8184 return 0; 8185 } 8186 fan_get_speed(unsigned int * speed)8187 static int fan_get_speed(unsigned int *speed) 8188 { 8189 u8 hi, lo; 8190 8191 switch (fan_status_access_mode) { 8192 case TPACPI_FAN_RD_TPEC: 8193 /* all except 570, 600e/x, 770e, 770x */ 8194 if (unlikely(!fan_select_fan1())) 8195 return -EIO; 8196 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8197 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8198 return -EIO; 8199 8200 if (likely(speed)) { 8201 *speed = (hi << 8) | lo; 8202 if (fan_speed_in_tpr && *speed != 0) 8203 *speed = FAN_CLOCK_TPM / *speed; 8204 } 8205 break; 8206 case TPACPI_FAN_RD_TPEC_NS: 8207 if (!acpi_ec_read(fan_rpm_status_ns, &lo)) 8208 return -EIO; 8209 8210 if (speed) 8211 *speed = lo ? FAN_RPM_CAL_CONST / lo : 0; 8212 break; 8213 8214 default: 8215 return -ENXIO; 8216 } 8217 8218 return 0; 8219 } 8220 fan2_get_speed(unsigned int * speed)8221 static int fan2_get_speed(unsigned int *speed) 8222 { 8223 u8 hi, lo, status; 8224 bool rc; 8225 8226 switch (fan_status_access_mode) { 8227 case TPACPI_FAN_RD_TPEC: 8228 /* all except 570, 600e/x, 770e, 770x */ 8229 if (unlikely(!fan_select_fan2())) 8230 return -EIO; 8231 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8232 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8233 fan_select_fan1(); /* play it safe */ 8234 if (rc) 8235 return -EIO; 8236 8237 if (likely(speed)) { 8238 *speed = (hi << 8) | lo; 8239 if (fan_speed_in_tpr && *speed != 0) 8240 *speed = FAN_CLOCK_TPM / *speed; 8241 } 8242 break; 8243 8244 case TPACPI_FAN_RD_TPEC_NS: 8245 rc = !acpi_ec_read(fan2_status_offset_ns, &status); 8246 if (rc) 8247 return -EIO; 8248 if (!(status & FAN_NS_CTRL_STATUS)) { 8249 pr_info("secondary fan control not supported\n"); 8250 return -EIO; 8251 } 8252 rc = !acpi_ec_read(fan2_rpm_status_ns, &lo); 8253 if (rc) 8254 return -EIO; 8255 if (speed) 8256 *speed = lo ? FAN_RPM_CAL_CONST / lo : 0; 8257 break; 8258 8259 default: 8260 return -ENXIO; 8261 } 8262 8263 return 0; 8264 } 8265 fan_set_level(int level)8266 static int fan_set_level(int level) 8267 { 8268 if (!fan_control_allowed) 8269 return -EPERM; 8270 8271 switch (fan_control_access_mode) { 8272 case TPACPI_FAN_WR_ACPI_SFAN: 8273 if ((level < 0) || (level > 7)) 8274 return -EINVAL; 8275 8276 if (tp_features.second_fan_ctl) { 8277 if (!fan_select_fan2() || 8278 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8279 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8280 tp_features.second_fan_ctl = 0; 8281 } 8282 fan_select_fan1(); 8283 } 8284 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8285 return -EIO; 8286 break; 8287 8288 case TPACPI_FAN_WR_ACPI_FANS: 8289 case TPACPI_FAN_WR_TPEC: 8290 if (!(level & TP_EC_FAN_AUTO) && 8291 !(level & TP_EC_FAN_FULLSPEED) && 8292 ((level < 0) || (level > 7))) 8293 return -EINVAL; 8294 8295 /* safety net should the EC not support AUTO 8296 * or FULLSPEED mode bits and just ignore them */ 8297 if (level & TP_EC_FAN_FULLSPEED) 8298 level |= 7; /* safety min speed 7 */ 8299 else if (level & TP_EC_FAN_AUTO) 8300 level |= 4; /* safety min speed 4 */ 8301 8302 if (tp_features.second_fan_ctl) { 8303 if (!fan_select_fan2() || 8304 !acpi_ec_write(fan_status_offset, level)) { 8305 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8306 tp_features.second_fan_ctl = 0; 8307 } 8308 fan_select_fan1(); 8309 8310 } 8311 if (!acpi_ec_write(fan_status_offset, level)) 8312 return -EIO; 8313 else 8314 tp_features.fan_ctrl_status_undef = 0; 8315 break; 8316 8317 default: 8318 return -ENXIO; 8319 } 8320 8321 vdbg_printk(TPACPI_DBG_FAN, 8322 "fan control: set fan control register to 0x%02x\n", level); 8323 return 0; 8324 } 8325 fan_set_level_safe(int level)8326 static int fan_set_level_safe(int level) 8327 { 8328 int rc; 8329 8330 if (!fan_control_allowed) 8331 return -EPERM; 8332 8333 if (mutex_lock_killable(&fan_mutex)) 8334 return -ERESTARTSYS; 8335 8336 if (level == TPACPI_FAN_LAST_LEVEL) 8337 level = fan_control_desired_level; 8338 8339 rc = fan_set_level(level); 8340 if (!rc) 8341 fan_update_desired_level(level); 8342 8343 mutex_unlock(&fan_mutex); 8344 return rc; 8345 } 8346 fan_set_enable(void)8347 static int fan_set_enable(void) 8348 { 8349 u8 s; 8350 int rc; 8351 8352 if (!fan_control_allowed) 8353 return -EPERM; 8354 8355 if (mutex_lock_killable(&fan_mutex)) 8356 return -ERESTARTSYS; 8357 8358 switch (fan_control_access_mode) { 8359 case TPACPI_FAN_WR_ACPI_FANS: 8360 case TPACPI_FAN_WR_TPEC: 8361 rc = fan_get_status(&s); 8362 if (rc) 8363 break; 8364 8365 /* Don't go out of emergency fan mode */ 8366 if (s != 7) { 8367 s &= 0x07; 8368 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8369 } 8370 8371 if (!acpi_ec_write(fan_status_offset, s)) 8372 rc = -EIO; 8373 else { 8374 tp_features.fan_ctrl_status_undef = 0; 8375 rc = 0; 8376 } 8377 break; 8378 8379 case TPACPI_FAN_WR_ACPI_SFAN: 8380 rc = fan_get_status(&s); 8381 if (rc) 8382 break; 8383 8384 s &= 0x07; 8385 8386 /* Set fan to at least level 4 */ 8387 s |= 4; 8388 8389 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8390 rc = -EIO; 8391 else 8392 rc = 0; 8393 break; 8394 8395 default: 8396 rc = -ENXIO; 8397 } 8398 8399 mutex_unlock(&fan_mutex); 8400 8401 if (!rc) 8402 vdbg_printk(TPACPI_DBG_FAN, 8403 "fan control: set fan control register to 0x%02x\n", 8404 s); 8405 return rc; 8406 } 8407 fan_set_disable(void)8408 static int fan_set_disable(void) 8409 { 8410 int rc; 8411 8412 if (!fan_control_allowed) 8413 return -EPERM; 8414 8415 if (mutex_lock_killable(&fan_mutex)) 8416 return -ERESTARTSYS; 8417 8418 rc = 0; 8419 switch (fan_control_access_mode) { 8420 case TPACPI_FAN_WR_ACPI_FANS: 8421 case TPACPI_FAN_WR_TPEC: 8422 if (!acpi_ec_write(fan_status_offset, 0x00)) 8423 rc = -EIO; 8424 else { 8425 fan_control_desired_level = 0; 8426 tp_features.fan_ctrl_status_undef = 0; 8427 } 8428 break; 8429 8430 case TPACPI_FAN_WR_ACPI_SFAN: 8431 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8432 rc = -EIO; 8433 else 8434 fan_control_desired_level = 0; 8435 break; 8436 8437 default: 8438 rc = -ENXIO; 8439 } 8440 8441 if (!rc) 8442 vdbg_printk(TPACPI_DBG_FAN, 8443 "fan control: set fan control register to 0\n"); 8444 8445 mutex_unlock(&fan_mutex); 8446 return rc; 8447 } 8448 fan_set_speed(int speed)8449 static int fan_set_speed(int speed) 8450 { 8451 int rc; 8452 8453 if (!fan_control_allowed) 8454 return -EPERM; 8455 8456 if (mutex_lock_killable(&fan_mutex)) 8457 return -ERESTARTSYS; 8458 8459 rc = 0; 8460 switch (fan_control_access_mode) { 8461 case TPACPI_FAN_WR_ACPI_FANS: 8462 if (speed >= 0 && speed <= 65535) { 8463 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8464 speed, speed, speed)) 8465 rc = -EIO; 8466 } else 8467 rc = -EINVAL; 8468 break; 8469 8470 default: 8471 rc = -ENXIO; 8472 } 8473 8474 mutex_unlock(&fan_mutex); 8475 return rc; 8476 } 8477 fan_watchdog_reset(void)8478 static void fan_watchdog_reset(void) 8479 { 8480 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8481 return; 8482 8483 if (fan_watchdog_maxinterval > 0 && 8484 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8485 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8486 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8487 else 8488 cancel_delayed_work(&fan_watchdog_task); 8489 } 8490 fan_watchdog_fire(struct work_struct * ignored)8491 static void fan_watchdog_fire(struct work_struct *ignored) 8492 { 8493 int rc; 8494 8495 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8496 return; 8497 8498 pr_notice("fan watchdog: enabling fan\n"); 8499 rc = fan_set_enable(); 8500 if (rc < 0) { 8501 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8502 rc); 8503 /* reschedule for later */ 8504 fan_watchdog_reset(); 8505 } 8506 } 8507 8508 /* 8509 * SYSFS fan layout: hwmon compatible (device) 8510 * 8511 * pwm*_enable: 8512 * 0: "disengaged" mode 8513 * 1: manual mode 8514 * 2: native EC "auto" mode (recommended, hardware default) 8515 * 8516 * pwm*: set speed in manual mode, ignored otherwise. 8517 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8518 * interpolation. 8519 * 8520 * fan*_input: tachometer reading, RPM 8521 * 8522 * 8523 * SYSFS fan layout: extensions 8524 * 8525 * fan_watchdog (driver): 8526 * fan watchdog interval in seconds, 0 disables (default), max 120 8527 */ 8528 8529 /* sysfs fan pwm1_enable ----------------------------------------------- */ fan_pwm1_enable_show(struct device * dev,struct device_attribute * attr,char * buf)8530 static ssize_t fan_pwm1_enable_show(struct device *dev, 8531 struct device_attribute *attr, 8532 char *buf) 8533 { 8534 int res, mode; 8535 u8 status; 8536 8537 res = fan_get_status_safe(&status); 8538 if (res) 8539 return res; 8540 8541 if (status & TP_EC_FAN_FULLSPEED) { 8542 mode = 0; 8543 } else if (status & TP_EC_FAN_AUTO) { 8544 mode = 2; 8545 } else 8546 mode = 1; 8547 8548 return sysfs_emit(buf, "%d\n", mode); 8549 } 8550 fan_pwm1_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)8551 static ssize_t fan_pwm1_enable_store(struct device *dev, 8552 struct device_attribute *attr, 8553 const char *buf, size_t count) 8554 { 8555 unsigned long t; 8556 int res, level; 8557 8558 if (parse_strtoul(buf, 2, &t)) 8559 return -EINVAL; 8560 8561 tpacpi_disclose_usertask("hwmon pwm1_enable", 8562 "set fan mode to %lu\n", t); 8563 8564 switch (t) { 8565 case 0: 8566 level = TP_EC_FAN_FULLSPEED; 8567 break; 8568 case 1: 8569 level = TPACPI_FAN_LAST_LEVEL; 8570 break; 8571 case 2: 8572 level = TP_EC_FAN_AUTO; 8573 break; 8574 case 3: 8575 /* reserved for software-controlled auto mode */ 8576 return -ENOSYS; 8577 default: 8578 return -EINVAL; 8579 } 8580 8581 res = fan_set_level_safe(level); 8582 if (res == -ENXIO) 8583 return -EINVAL; 8584 else if (res < 0) 8585 return res; 8586 8587 fan_watchdog_reset(); 8588 8589 return count; 8590 } 8591 8592 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8593 fan_pwm1_enable_show, fan_pwm1_enable_store); 8594 8595 /* sysfs fan pwm1 ------------------------------------------------------ */ fan_pwm1_show(struct device * dev,struct device_attribute * attr,char * buf)8596 static ssize_t fan_pwm1_show(struct device *dev, 8597 struct device_attribute *attr, 8598 char *buf) 8599 { 8600 int res; 8601 u8 status; 8602 8603 res = fan_get_status_safe(&status); 8604 if (res) 8605 return res; 8606 8607 if ((status & 8608 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8609 status = fan_control_desired_level; 8610 8611 if (status > 7) 8612 status = 7; 8613 8614 return sysfs_emit(buf, "%u\n", (status * 255) / 7); 8615 } 8616 fan_pwm1_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)8617 static ssize_t fan_pwm1_store(struct device *dev, 8618 struct device_attribute *attr, 8619 const char *buf, size_t count) 8620 { 8621 unsigned long s; 8622 int rc; 8623 u8 status, newlevel; 8624 8625 if (parse_strtoul(buf, 255, &s)) 8626 return -EINVAL; 8627 8628 tpacpi_disclose_usertask("hwmon pwm1", 8629 "set fan speed to %lu\n", s); 8630 8631 /* scale down from 0-255 to 0-7 */ 8632 newlevel = (s >> 5) & 0x07; 8633 8634 if (mutex_lock_killable(&fan_mutex)) 8635 return -ERESTARTSYS; 8636 8637 rc = fan_get_status(&status); 8638 if (!rc && (status & 8639 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8640 rc = fan_set_level(newlevel); 8641 if (rc == -ENXIO) 8642 rc = -EINVAL; 8643 else if (!rc) { 8644 fan_update_desired_level(newlevel); 8645 fan_watchdog_reset(); 8646 } 8647 } 8648 8649 mutex_unlock(&fan_mutex); 8650 return (rc) ? rc : count; 8651 } 8652 8653 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8654 8655 /* sysfs fan fan1_input ------------------------------------------------ */ fan_fan1_input_show(struct device * dev,struct device_attribute * attr,char * buf)8656 static ssize_t fan_fan1_input_show(struct device *dev, 8657 struct device_attribute *attr, 8658 char *buf) 8659 { 8660 int res; 8661 unsigned int speed; 8662 8663 res = fan_get_speed(&speed); 8664 if (res < 0) 8665 return res; 8666 8667 /* Check for fan speeds displayed in hexadecimal */ 8668 if (!ecfw_with_fan_dec_rpm) 8669 return sysfs_emit(buf, "%u\n", speed); 8670 else 8671 return sysfs_emit(buf, "%x\n", speed); 8672 } 8673 8674 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8675 8676 /* sysfs fan fan2_input ------------------------------------------------ */ fan_fan2_input_show(struct device * dev,struct device_attribute * attr,char * buf)8677 static ssize_t fan_fan2_input_show(struct device *dev, 8678 struct device_attribute *attr, 8679 char *buf) 8680 { 8681 int res; 8682 unsigned int speed; 8683 8684 res = fan2_get_speed(&speed); 8685 if (res < 0) 8686 return res; 8687 8688 /* Check for fan speeds displayed in hexadecimal */ 8689 if (!ecfw_with_fan_dec_rpm) 8690 return sysfs_emit(buf, "%u\n", speed); 8691 else 8692 return sysfs_emit(buf, "%x\n", speed); 8693 } 8694 8695 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8696 8697 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ fan_watchdog_show(struct device_driver * drv,char * buf)8698 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8699 { 8700 return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval); 8701 } 8702 fan_watchdog_store(struct device_driver * drv,const char * buf,size_t count)8703 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8704 size_t count) 8705 { 8706 unsigned long t; 8707 8708 if (parse_strtoul(buf, 120, &t)) 8709 return -EINVAL; 8710 8711 if (!fan_control_allowed) 8712 return -EPERM; 8713 8714 fan_watchdog_maxinterval = t; 8715 fan_watchdog_reset(); 8716 8717 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8718 8719 return count; 8720 } 8721 static DRIVER_ATTR_RW(fan_watchdog); 8722 8723 /* --------------------------------------------------------------------- */ 8724 8725 static struct attribute *fan_attributes[] = { 8726 &dev_attr_pwm1_enable.attr, 8727 &dev_attr_pwm1.attr, 8728 &dev_attr_fan1_input.attr, 8729 &dev_attr_fan2_input.attr, 8730 NULL 8731 }; 8732 fan_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)8733 static umode_t fan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 8734 int n) 8735 { 8736 if (fan_status_access_mode == TPACPI_FAN_NONE && 8737 fan_control_access_mode == TPACPI_FAN_WR_NONE) 8738 return 0; 8739 8740 if (attr == &dev_attr_fan2_input.attr) { 8741 if (!tp_features.second_fan) 8742 return 0; 8743 } 8744 8745 return attr->mode; 8746 } 8747 8748 static const struct attribute_group fan_attr_group = { 8749 .is_visible = fan_attr_is_visible, 8750 .attrs = fan_attributes, 8751 }; 8752 8753 static struct attribute *fan_driver_attributes[] = { 8754 &driver_attr_fan_watchdog.attr, 8755 NULL 8756 }; 8757 8758 static const struct attribute_group fan_driver_attr_group = { 8759 .is_visible = fan_attr_is_visible, 8760 .attrs = fan_driver_attributes, 8761 }; 8762 8763 #define TPACPI_FAN_Q1 0x0001 /* Uninitialized HFSP */ 8764 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8765 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8766 #define TPACPI_FAN_NOFAN 0x0008 /* no fan available */ 8767 #define TPACPI_FAN_NS 0x0010 /* For EC with non-Standard register addresses */ 8768 #define TPACPI_FAN_DECRPM 0x0020 /* For ECFW's with RPM in register as decimal */ 8769 #define TPACPI_FAN_TPR 0x0040 /* Fan speed is in Ticks Per Revolution */ 8770 8771 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8772 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8773 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8774 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8775 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8776 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8777 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8778 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8779 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8780 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8781 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8782 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8783 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ 8784 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8785 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8786 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8787 TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL), /* T15g (2nd gen) */ 8788 TPACPI_Q_LNV3('R', '1', 'F', TPACPI_FAN_NS), /* L13 Yoga Gen 2 */ 8789 TPACPI_Q_LNV3('N', '2', 'U', TPACPI_FAN_NS), /* X13 Yoga Gen 2*/ 8790 TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */ 8791 TPACPI_Q_LNV3('R', '0', 'Q', TPACPI_FAN_DECRPM),/* L480 */ 8792 TPACPI_Q_LNV('8', 'F', TPACPI_FAN_TPR), /* ThinkPad x120e */ 8793 }; 8794 fan_init(struct ibm_init_struct * iibm)8795 static int __init fan_init(struct ibm_init_struct *iibm) 8796 { 8797 unsigned long quirks; 8798 8799 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8800 "initializing fan subdriver\n"); 8801 8802 mutex_init(&fan_mutex); 8803 fan_status_access_mode = TPACPI_FAN_NONE; 8804 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8805 fan_control_commands = 0; 8806 fan_watchdog_maxinterval = 0; 8807 tp_features.fan_ctrl_status_undef = 0; 8808 tp_features.second_fan = 0; 8809 tp_features.second_fan_ctl = 0; 8810 fan_control_desired_level = 7; 8811 8812 if (tpacpi_is_ibm()) { 8813 TPACPI_ACPIHANDLE_INIT(fans); 8814 TPACPI_ACPIHANDLE_INIT(gfan); 8815 TPACPI_ACPIHANDLE_INIT(sfan); 8816 } 8817 8818 quirks = tpacpi_check_quirks(fan_quirk_table, 8819 ARRAY_SIZE(fan_quirk_table)); 8820 8821 if (quirks & TPACPI_FAN_NOFAN) { 8822 pr_info("No integrated ThinkPad fan available\n"); 8823 return -ENODEV; 8824 } 8825 8826 if (quirks & TPACPI_FAN_NS) { 8827 pr_info("ECFW with non-standard fan reg control found\n"); 8828 fan_with_ns_addr = 1; 8829 /* Fan ctrl support from host is undefined for now */ 8830 tp_features.fan_ctrl_status_undef = 1; 8831 } 8832 8833 /* Check for the EC/BIOS with RPM reported in decimal*/ 8834 if (quirks & TPACPI_FAN_DECRPM) { 8835 pr_info("ECFW with fan RPM as decimal in EC register\n"); 8836 ecfw_with_fan_dec_rpm = 1; 8837 tp_features.fan_ctrl_status_undef = 1; 8838 } 8839 8840 if (gfan_handle) { 8841 /* 570, 600e/x, 770e, 770x */ 8842 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8843 } else { 8844 /* all other ThinkPads: note that even old-style 8845 * ThinkPad ECs supports the fan control register */ 8846 if (fan_with_ns_addr || 8847 likely(acpi_ec_read(fan_status_offset, &fan_control_initial_status))) { 8848 int res; 8849 unsigned int speed; 8850 8851 fan_status_access_mode = fan_with_ns_addr ? 8852 TPACPI_FAN_RD_TPEC_NS : TPACPI_FAN_RD_TPEC; 8853 8854 if (quirks & TPACPI_FAN_Q1) 8855 fan_quirk1_setup(); 8856 if (quirks & TPACPI_FAN_TPR) 8857 fan_speed_in_tpr = true; 8858 /* Try and probe the 2nd fan */ 8859 tp_features.second_fan = 1; /* needed for get_speed to work */ 8860 res = fan2_get_speed(&speed); 8861 if (res >= 0 && speed != FAN_NOT_PRESENT) { 8862 /* It responded - so let's assume it's there */ 8863 tp_features.second_fan = 1; 8864 /* fan control not currently available for ns ECFW */ 8865 tp_features.second_fan_ctl = !fan_with_ns_addr; 8866 pr_info("secondary fan control detected & enabled\n"); 8867 } else { 8868 /* Fan not auto-detected */ 8869 tp_features.second_fan = 0; 8870 if (quirks & TPACPI_FAN_2FAN) { 8871 tp_features.second_fan = 1; 8872 pr_info("secondary fan support enabled\n"); 8873 } 8874 if (quirks & TPACPI_FAN_2CTL) { 8875 tp_features.second_fan = 1; 8876 tp_features.second_fan_ctl = 1; 8877 pr_info("secondary fan control enabled\n"); 8878 } 8879 } 8880 } else { 8881 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8882 return -ENODEV; 8883 } 8884 } 8885 8886 if (sfan_handle) { 8887 /* 570, 770x-JL */ 8888 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8889 fan_control_commands |= 8890 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8891 } else { 8892 if (!gfan_handle) { 8893 /* gfan without sfan means no fan control */ 8894 /* all other models implement TP EC 0x2f control */ 8895 8896 if (fans_handle) { 8897 /* X31, X40, X41 */ 8898 fan_control_access_mode = 8899 TPACPI_FAN_WR_ACPI_FANS; 8900 fan_control_commands |= 8901 TPACPI_FAN_CMD_SPEED | 8902 TPACPI_FAN_CMD_LEVEL | 8903 TPACPI_FAN_CMD_ENABLE; 8904 } else { 8905 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8906 fan_control_commands |= 8907 TPACPI_FAN_CMD_LEVEL | 8908 TPACPI_FAN_CMD_ENABLE; 8909 } 8910 } 8911 } 8912 8913 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8914 "fan is %s, modes %d, %d\n", 8915 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8916 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8917 fan_status_access_mode, fan_control_access_mode); 8918 8919 /* fan control master switch */ 8920 if (!fan_control_allowed) { 8921 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8922 fan_control_commands = 0; 8923 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8924 "fan control features disabled by parameter\n"); 8925 } 8926 8927 /* update fan_control_desired_level */ 8928 if (fan_status_access_mode != TPACPI_FAN_NONE) 8929 fan_get_status_safe(NULL); 8930 8931 if (fan_status_access_mode == TPACPI_FAN_NONE && 8932 fan_control_access_mode == TPACPI_FAN_WR_NONE) 8933 return -ENODEV; 8934 8935 return 0; 8936 } 8937 fan_exit(void)8938 static void fan_exit(void) 8939 { 8940 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8941 "cancelling any pending fan watchdog tasks\n"); 8942 8943 cancel_delayed_work(&fan_watchdog_task); 8944 flush_workqueue(tpacpi_wq); 8945 } 8946 fan_suspend(void)8947 static void fan_suspend(void) 8948 { 8949 int rc; 8950 8951 if (!fan_control_allowed) 8952 return; 8953 8954 /* Store fan status in cache */ 8955 fan_control_resume_level = 0; 8956 rc = fan_get_status_safe(&fan_control_resume_level); 8957 if (rc) 8958 pr_notice("failed to read fan level for later restore during resume: %d\n", 8959 rc); 8960 8961 /* if it is undefined, don't attempt to restore it. 8962 * KEEP THIS LAST */ 8963 if (tp_features.fan_ctrl_status_undef) 8964 fan_control_resume_level = 0; 8965 } 8966 fan_resume(void)8967 static void fan_resume(void) 8968 { 8969 u8 current_level = 7; 8970 bool do_set = false; 8971 int rc; 8972 8973 /* DSDT *always* updates status on resume */ 8974 tp_features.fan_ctrl_status_undef = 0; 8975 8976 if (!fan_control_allowed || 8977 !fan_control_resume_level || 8978 fan_get_status_safe(¤t_level)) 8979 return; 8980 8981 switch (fan_control_access_mode) { 8982 case TPACPI_FAN_WR_ACPI_SFAN: 8983 /* never decrease fan level */ 8984 do_set = (fan_control_resume_level > current_level); 8985 break; 8986 case TPACPI_FAN_WR_ACPI_FANS: 8987 case TPACPI_FAN_WR_TPEC: 8988 /* never decrease fan level, scale is: 8989 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 8990 * 8991 * We expect the firmware to set either 7 or AUTO, but we 8992 * handle FULLSPEED out of paranoia. 8993 * 8994 * So, we can safely only restore FULLSPEED or 7, anything 8995 * else could slow the fan. Restoring AUTO is useless, at 8996 * best that's exactly what the DSDT already set (it is the 8997 * slower it uses). 8998 * 8999 * Always keep in mind that the DSDT *will* have set the 9000 * fans to what the vendor supposes is the best level. We 9001 * muck with it only to speed the fan up. 9002 */ 9003 if (fan_control_resume_level != 7 && 9004 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 9005 return; 9006 else 9007 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 9008 (current_level != fan_control_resume_level); 9009 break; 9010 default: 9011 return; 9012 } 9013 if (do_set) { 9014 pr_notice("restoring fan level to 0x%02x\n", 9015 fan_control_resume_level); 9016 rc = fan_set_level_safe(fan_control_resume_level); 9017 if (rc < 0) 9018 pr_notice("failed to restore fan level: %d\n", rc); 9019 } 9020 } 9021 fan_read(struct seq_file * m)9022 static int fan_read(struct seq_file *m) 9023 { 9024 int rc; 9025 u8 status; 9026 unsigned int speed = 0; 9027 9028 switch (fan_status_access_mode) { 9029 case TPACPI_FAN_RD_ACPI_GFAN: 9030 /* 570, 600e/x, 770e, 770x */ 9031 rc = fan_get_status_safe(&status); 9032 if (rc) 9033 return rc; 9034 9035 seq_printf(m, "status:\t\t%s\n" 9036 "level:\t\t%d\n", 9037 str_enabled_disabled(status), status); 9038 break; 9039 9040 case TPACPI_FAN_RD_TPEC_NS: 9041 case TPACPI_FAN_RD_TPEC: 9042 /* all except 570, 600e/x, 770e, 770x */ 9043 rc = fan_get_status_safe(&status); 9044 if (rc) 9045 return rc; 9046 9047 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status)); 9048 9049 rc = fan_get_speed(&speed); 9050 if (rc < 0) 9051 return rc; 9052 9053 /* Check for fan speeds displayed in hexadecimal */ 9054 if (!ecfw_with_fan_dec_rpm) 9055 seq_printf(m, "speed:\t\t%d\n", speed); 9056 else 9057 seq_printf(m, "speed:\t\t%x\n", speed); 9058 9059 if (fan_status_access_mode == TPACPI_FAN_RD_TPEC_NS) { 9060 /* 9061 * No full speed bit in NS EC 9062 * EC Auto mode is set by default. 9063 * No other levels settings available 9064 */ 9065 seq_printf(m, "level:\t\t%s\n", status & FAN_NS_CTRL ? "unknown" : "auto"); 9066 } else { 9067 if (status & TP_EC_FAN_FULLSPEED) 9068 /* Disengaged mode takes precedence */ 9069 seq_printf(m, "level:\t\tdisengaged\n"); 9070 else if (status & TP_EC_FAN_AUTO) 9071 seq_printf(m, "level:\t\tauto\n"); 9072 else 9073 seq_printf(m, "level:\t\t%d\n", status); 9074 } 9075 break; 9076 9077 case TPACPI_FAN_NONE: 9078 default: 9079 seq_printf(m, "status:\t\tnot supported\n"); 9080 } 9081 9082 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9083 seq_printf(m, "commands:\tlevel <level>"); 9084 9085 switch (fan_control_access_mode) { 9086 case TPACPI_FAN_WR_ACPI_SFAN: 9087 seq_printf(m, " (<level> is 0-7)\n"); 9088 break; 9089 9090 default: 9091 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9092 break; 9093 } 9094 } 9095 9096 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9097 seq_printf(m, "commands:\tenable, disable\n" 9098 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9099 9100 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9101 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9102 9103 return 0; 9104 } 9105 fan_write_cmd_level(const char * cmd,int * rc)9106 static int fan_write_cmd_level(const char *cmd, int *rc) 9107 { 9108 int level; 9109 9110 if (strstarts(cmd, "level auto")) 9111 level = TP_EC_FAN_AUTO; 9112 else if (strstarts(cmd, "level disengaged") || strstarts(cmd, "level full-speed")) 9113 level = TP_EC_FAN_FULLSPEED; 9114 else if (sscanf(cmd, "level %d", &level) != 1) 9115 return 0; 9116 9117 *rc = fan_set_level_safe(level); 9118 if (*rc == -ENXIO) 9119 pr_err("level command accepted for unsupported access mode %d\n", 9120 fan_control_access_mode); 9121 else if (!*rc) 9122 tpacpi_disclose_usertask("procfs fan", 9123 "set level to %d\n", level); 9124 9125 return 1; 9126 } 9127 fan_write_cmd_enable(const char * cmd,int * rc)9128 static int fan_write_cmd_enable(const char *cmd, int *rc) 9129 { 9130 if (!strstarts(cmd, "enable")) 9131 return 0; 9132 9133 *rc = fan_set_enable(); 9134 if (*rc == -ENXIO) 9135 pr_err("enable command accepted for unsupported access mode %d\n", 9136 fan_control_access_mode); 9137 else if (!*rc) 9138 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9139 9140 return 1; 9141 } 9142 fan_write_cmd_disable(const char * cmd,int * rc)9143 static int fan_write_cmd_disable(const char *cmd, int *rc) 9144 { 9145 if (!strstarts(cmd, "disable")) 9146 return 0; 9147 9148 *rc = fan_set_disable(); 9149 if (*rc == -ENXIO) 9150 pr_err("disable command accepted for unsupported access mode %d\n", 9151 fan_control_access_mode); 9152 else if (!*rc) 9153 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9154 9155 return 1; 9156 } 9157 fan_write_cmd_speed(const char * cmd,int * rc)9158 static int fan_write_cmd_speed(const char *cmd, int *rc) 9159 { 9160 int speed; 9161 9162 /* TODO: 9163 * Support speed <low> <medium> <high> ? */ 9164 9165 if (sscanf(cmd, "speed %d", &speed) != 1) 9166 return 0; 9167 9168 *rc = fan_set_speed(speed); 9169 if (*rc == -ENXIO) 9170 pr_err("speed command accepted for unsupported access mode %d\n", 9171 fan_control_access_mode); 9172 else if (!*rc) 9173 tpacpi_disclose_usertask("procfs fan", 9174 "set speed to %d\n", speed); 9175 9176 return 1; 9177 } 9178 fan_write_cmd_watchdog(const char * cmd,int * rc)9179 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9180 { 9181 int interval; 9182 9183 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9184 return 0; 9185 9186 if (interval < 0 || interval > 120) 9187 *rc = -EINVAL; 9188 else { 9189 fan_watchdog_maxinterval = interval; 9190 tpacpi_disclose_usertask("procfs fan", 9191 "set watchdog timer to %d\n", 9192 interval); 9193 } 9194 9195 return 1; 9196 } 9197 fan_write(char * buf)9198 static int fan_write(char *buf) 9199 { 9200 char *cmd; 9201 int rc = 0; 9202 9203 while (!rc && (cmd = strsep(&buf, ","))) { 9204 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9205 fan_write_cmd_level(cmd, &rc)) && 9206 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9207 (fan_write_cmd_enable(cmd, &rc) || 9208 fan_write_cmd_disable(cmd, &rc) || 9209 fan_write_cmd_watchdog(cmd, &rc))) && 9210 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9211 fan_write_cmd_speed(cmd, &rc)) 9212 ) 9213 rc = -EINVAL; 9214 else if (!rc) 9215 fan_watchdog_reset(); 9216 } 9217 9218 return rc; 9219 } 9220 9221 static struct ibm_struct fan_driver_data = { 9222 .name = "fan", 9223 .read = fan_read, 9224 .write = fan_write, 9225 .exit = fan_exit, 9226 .suspend = fan_suspend, 9227 .resume = fan_resume, 9228 }; 9229 9230 /************************************************************************* 9231 * Mute LED subdriver 9232 */ 9233 9234 #define TPACPI_LED_MAX 2 9235 9236 struct tp_led_table { 9237 acpi_string name; 9238 int on_value; 9239 int off_value; 9240 int state; 9241 }; 9242 9243 static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9244 [LED_AUDIO_MUTE] = { 9245 .name = "SSMS", 9246 .on_value = 1, 9247 .off_value = 0, 9248 }, 9249 [LED_AUDIO_MICMUTE] = { 9250 .name = "MMTS", 9251 .on_value = 2, 9252 .off_value = 0, 9253 }, 9254 }; 9255 mute_led_on_off(struct tp_led_table * t,bool state)9256 static int mute_led_on_off(struct tp_led_table *t, bool state) 9257 { 9258 acpi_handle temp; 9259 int output; 9260 9261 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9262 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9263 return -EIO; 9264 } 9265 9266 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9267 state ? t->on_value : t->off_value)) 9268 return -EIO; 9269 9270 t->state = state; 9271 return state; 9272 } 9273 tpacpi_led_set(int whichled,bool on)9274 static int tpacpi_led_set(int whichled, bool on) 9275 { 9276 struct tp_led_table *t; 9277 9278 t = &led_tables[whichled]; 9279 if (t->state < 0 || t->state == on) 9280 return t->state; 9281 return mute_led_on_off(t, on); 9282 } 9283 tpacpi_led_mute_set(struct led_classdev * led_cdev,enum led_brightness brightness)9284 static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9285 enum led_brightness brightness) 9286 { 9287 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9288 } 9289 tpacpi_led_micmute_set(struct led_classdev * led_cdev,enum led_brightness brightness)9290 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9291 enum led_brightness brightness) 9292 { 9293 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9294 } 9295 9296 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9297 [LED_AUDIO_MUTE] = { 9298 .name = "platform::mute", 9299 .max_brightness = 1, 9300 .brightness_set_blocking = tpacpi_led_mute_set, 9301 .default_trigger = "audio-mute", 9302 }, 9303 [LED_AUDIO_MICMUTE] = { 9304 .name = "platform::micmute", 9305 .max_brightness = 1, 9306 .brightness_set_blocking = tpacpi_led_micmute_set, 9307 .default_trigger = "audio-micmute", 9308 }, 9309 }; 9310 mute_led_init(struct ibm_init_struct * iibm)9311 static int mute_led_init(struct ibm_init_struct *iibm) 9312 { 9313 acpi_handle temp; 9314 int i, err; 9315 9316 for (i = 0; i < TPACPI_LED_MAX; i++) { 9317 struct tp_led_table *t = &led_tables[i]; 9318 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9319 t->state = -ENODEV; 9320 continue; 9321 } 9322 9323 mute_led_cdev[i].brightness = ledtrig_audio_get(i); 9324 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9325 if (err < 0) { 9326 while (i--) 9327 led_classdev_unregister(&mute_led_cdev[i]); 9328 return err; 9329 } 9330 } 9331 return 0; 9332 } 9333 mute_led_exit(void)9334 static void mute_led_exit(void) 9335 { 9336 int i; 9337 9338 for (i = 0; i < TPACPI_LED_MAX; i++) { 9339 led_classdev_unregister(&mute_led_cdev[i]); 9340 tpacpi_led_set(i, false); 9341 } 9342 } 9343 mute_led_resume(void)9344 static void mute_led_resume(void) 9345 { 9346 int i; 9347 9348 for (i = 0; i < TPACPI_LED_MAX; i++) { 9349 struct tp_led_table *t = &led_tables[i]; 9350 if (t->state >= 0) 9351 mute_led_on_off(t, t->state); 9352 } 9353 } 9354 9355 static struct ibm_struct mute_led_driver_data = { 9356 .name = "mute_led", 9357 .exit = mute_led_exit, 9358 .resume = mute_led_resume, 9359 }; 9360 9361 /* 9362 * Battery Wear Control Driver 9363 * Contact: Ognjen Galic <smclt30p@gmail.com> 9364 */ 9365 9366 /* Metadata */ 9367 9368 #define GET_START "BCTG" 9369 #define SET_START "BCCS" 9370 #define GET_STOP "BCSG" 9371 #define SET_STOP "BCSS" 9372 #define GET_DISCHARGE "BDSG" 9373 #define SET_DISCHARGE "BDSS" 9374 #define GET_INHIBIT "BICG" 9375 #define SET_INHIBIT "BICS" 9376 9377 enum { 9378 BAT_ANY = 0, 9379 BAT_PRIMARY = 1, 9380 BAT_SECONDARY = 2 9381 }; 9382 9383 enum { 9384 /* Error condition bit */ 9385 METHOD_ERR = BIT(31), 9386 }; 9387 9388 enum { 9389 /* This is used in the get/set helpers */ 9390 THRESHOLD_START, 9391 THRESHOLD_STOP, 9392 FORCE_DISCHARGE, 9393 INHIBIT_CHARGE, 9394 }; 9395 9396 struct tpacpi_battery_data { 9397 int charge_start; 9398 int start_support; 9399 int charge_stop; 9400 int stop_support; 9401 unsigned int charge_behaviours; 9402 }; 9403 9404 struct tpacpi_battery_driver_data { 9405 struct tpacpi_battery_data batteries[3]; 9406 int individual_addressing; 9407 }; 9408 9409 static struct tpacpi_battery_driver_data battery_info; 9410 9411 /* ACPI helpers/functions/probes */ 9412 9413 /** 9414 * This evaluates a ACPI method call specific to the battery 9415 * ACPI extension. The specifics are that an error is marked 9416 * in the 32rd bit of the response, so we just check that here. 9417 */ tpacpi_battery_acpi_eval(char * method,int * ret,int param)9418 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9419 { 9420 int response; 9421 9422 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9423 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9424 return AE_ERROR; 9425 } 9426 if (response & METHOD_ERR) { 9427 acpi_handle_err(hkey_handle, 9428 "%s evaluated but flagged as error", method); 9429 return AE_ERROR; 9430 } 9431 *ret = response; 9432 return AE_OK; 9433 } 9434 tpacpi_battery_get(int what,int battery,int * ret)9435 static int tpacpi_battery_get(int what, int battery, int *ret) 9436 { 9437 switch (what) { 9438 case THRESHOLD_START: 9439 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) 9440 return -ENODEV; 9441 9442 /* The value is in the low 8 bits of the response */ 9443 *ret = *ret & 0xFF; 9444 return 0; 9445 case THRESHOLD_STOP: 9446 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) 9447 return -ENODEV; 9448 /* Value is in lower 8 bits */ 9449 *ret = *ret & 0xFF; 9450 /* 9451 * On the stop value, if we return 0 that 9452 * does not make any sense. 0 means Default, which 9453 * means that charging stops at 100%, so we return 9454 * that. 9455 */ 9456 if (*ret == 0) 9457 *ret = 100; 9458 return 0; 9459 case FORCE_DISCHARGE: 9460 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, ret, battery)) 9461 return -ENODEV; 9462 /* The force discharge status is in bit 0 */ 9463 *ret = *ret & 0x01; 9464 return 0; 9465 case INHIBIT_CHARGE: 9466 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, ret, battery)) 9467 return -ENODEV; 9468 /* The inhibit charge status is in bit 0 */ 9469 *ret = *ret & 0x01; 9470 return 0; 9471 default: 9472 pr_crit("wrong parameter: %d", what); 9473 return -EINVAL; 9474 } 9475 } 9476 tpacpi_battery_set(int what,int battery,int value)9477 static int tpacpi_battery_set(int what, int battery, int value) 9478 { 9479 int param, ret; 9480 /* The first 8 bits are the value of the threshold */ 9481 param = value; 9482 /* The battery ID is in bits 8-9, 2 bits */ 9483 param |= battery << 8; 9484 9485 switch (what) { 9486 case THRESHOLD_START: 9487 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9488 pr_err("failed to set charge threshold on battery %d", 9489 battery); 9490 return -ENODEV; 9491 } 9492 return 0; 9493 case THRESHOLD_STOP: 9494 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9495 pr_err("failed to set stop threshold: %d", battery); 9496 return -ENODEV; 9497 } 9498 return 0; 9499 case FORCE_DISCHARGE: 9500 /* Force discharge is in bit 0, 9501 * break on AC attach is in bit 1 (won't work on some ThinkPads), 9502 * battery ID is in bits 8-9, 2 bits. 9503 */ 9504 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_DISCHARGE, &ret, param))) { 9505 pr_err("failed to set force discharge on %d", battery); 9506 return -ENODEV; 9507 } 9508 return 0; 9509 case INHIBIT_CHARGE: 9510 /* When setting inhibit charge, we set a default value of 9511 * always breaking on AC detach and the effective time is set to 9512 * be permanent. 9513 * The battery ID is in bits 4-5, 2 bits, 9514 * the effective time is in bits 8-23, 2 bytes. 9515 * A time of FFFF indicates forever. 9516 */ 9517 param = value; 9518 param |= battery << 4; 9519 param |= 0xFFFF << 8; 9520 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_INHIBIT, &ret, param))) { 9521 pr_err("failed to set inhibit charge on %d", battery); 9522 return -ENODEV; 9523 } 9524 return 0; 9525 default: 9526 pr_crit("wrong parameter: %d", what); 9527 return -EINVAL; 9528 } 9529 } 9530 tpacpi_battery_set_validate(int what,int battery,int value)9531 static int tpacpi_battery_set_validate(int what, int battery, int value) 9532 { 9533 int ret, v; 9534 9535 ret = tpacpi_battery_set(what, battery, value); 9536 if (ret < 0) 9537 return ret; 9538 9539 ret = tpacpi_battery_get(what, battery, &v); 9540 if (ret < 0) 9541 return ret; 9542 9543 if (v == value) 9544 return 0; 9545 9546 msleep(500); 9547 9548 ret = tpacpi_battery_get(what, battery, &v); 9549 if (ret < 0) 9550 return ret; 9551 9552 if (v == value) 9553 return 0; 9554 9555 return -EIO; 9556 } 9557 tpacpi_battery_probe(int battery)9558 static int tpacpi_battery_probe(int battery) 9559 { 9560 int ret = 0; 9561 9562 memset(&battery_info.batteries[battery], 0, 9563 sizeof(battery_info.batteries[battery])); 9564 9565 /* 9566 * 1) Get the current start threshold 9567 * 2) Check for support 9568 * 3) Get the current stop threshold 9569 * 4) Check for support 9570 * 5) Get the current force discharge status 9571 * 6) Check for support 9572 * 7) Get the current inhibit charge status 9573 * 8) Check for support 9574 */ 9575 if (acpi_has_method(hkey_handle, GET_START)) { 9576 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9577 pr_err("Error probing battery %d\n", battery); 9578 return -ENODEV; 9579 } 9580 /* Individual addressing is in bit 9 */ 9581 if (ret & BIT(9)) 9582 battery_info.individual_addressing = true; 9583 /* Support is marked in bit 8 */ 9584 if (ret & BIT(8)) 9585 battery_info.batteries[battery].start_support = 1; 9586 else 9587 return -ENODEV; 9588 if (tpacpi_battery_get(THRESHOLD_START, battery, 9589 &battery_info.batteries[battery].charge_start)) { 9590 pr_err("Error probing battery %d\n", battery); 9591 return -ENODEV; 9592 } 9593 } 9594 if (acpi_has_method(hkey_handle, GET_STOP)) { 9595 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9596 pr_err("Error probing battery stop; %d\n", battery); 9597 return -ENODEV; 9598 } 9599 /* Support is marked in bit 8 */ 9600 if (ret & BIT(8)) 9601 battery_info.batteries[battery].stop_support = 1; 9602 else 9603 return -ENODEV; 9604 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9605 &battery_info.batteries[battery].charge_stop)) { 9606 pr_err("Error probing battery stop: %d\n", battery); 9607 return -ENODEV; 9608 } 9609 } 9610 if (acpi_has_method(hkey_handle, GET_DISCHARGE)) { 9611 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, &ret, battery))) { 9612 pr_err("Error probing battery discharge; %d\n", battery); 9613 return -ENODEV; 9614 } 9615 /* Support is marked in bit 8 */ 9616 if (ret & BIT(8)) 9617 battery_info.batteries[battery].charge_behaviours |= 9618 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE); 9619 } 9620 if (acpi_has_method(hkey_handle, GET_INHIBIT)) { 9621 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, &ret, battery))) { 9622 pr_err("Error probing battery inhibit charge; %d\n", battery); 9623 return -ENODEV; 9624 } 9625 /* Support is marked in bit 5 */ 9626 if (ret & BIT(5)) 9627 battery_info.batteries[battery].charge_behaviours |= 9628 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE); 9629 } 9630 9631 battery_info.batteries[battery].charge_behaviours |= 9632 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO); 9633 9634 pr_info("battery %d registered (start %d, stop %d, behaviours: 0x%x)\n", 9635 battery, 9636 battery_info.batteries[battery].charge_start, 9637 battery_info.batteries[battery].charge_stop, 9638 battery_info.batteries[battery].charge_behaviours); 9639 9640 return 0; 9641 } 9642 9643 /* General helper functions */ 9644 tpacpi_battery_get_id(const char * battery_name)9645 static int tpacpi_battery_get_id(const char *battery_name) 9646 { 9647 9648 if (strcmp(battery_name, "BAT0") == 0 || 9649 tp_features.battery_force_primary) 9650 return BAT_PRIMARY; 9651 if (strcmp(battery_name, "BAT1") == 0) 9652 return BAT_SECONDARY; 9653 /* 9654 * If for some reason the battery is not BAT0 nor is it 9655 * BAT1, we will assume it's the default, first battery, 9656 * AKA primary. 9657 */ 9658 pr_warn("unknown battery %s, assuming primary", battery_name); 9659 return BAT_PRIMARY; 9660 } 9661 9662 /* sysfs interface */ 9663 tpacpi_battery_store(int what,struct device * dev,const char * buf,size_t count)9664 static ssize_t tpacpi_battery_store(int what, 9665 struct device *dev, 9666 const char *buf, size_t count) 9667 { 9668 struct power_supply *supply = to_power_supply(dev); 9669 unsigned long value; 9670 int battery, rval; 9671 /* 9672 * Some systems have support for more than 9673 * one battery. If that is the case, 9674 * tpacpi_battery_probe marked that addressing 9675 * them individually is supported, so we do that 9676 * based on the device struct. 9677 * 9678 * On systems that are not supported, we assume 9679 * the primary as most of the ACPI calls fail 9680 * with "Any Battery" as the parameter. 9681 */ 9682 if (battery_info.individual_addressing) 9683 /* BAT_PRIMARY or BAT_SECONDARY */ 9684 battery = tpacpi_battery_get_id(supply->desc->name); 9685 else 9686 battery = BAT_PRIMARY; 9687 9688 rval = kstrtoul(buf, 10, &value); 9689 if (rval) 9690 return rval; 9691 9692 switch (what) { 9693 case THRESHOLD_START: 9694 if (!battery_info.batteries[battery].start_support) 9695 return -ENODEV; 9696 /* valid values are [0, 99] */ 9697 if (value > 99) 9698 return -EINVAL; 9699 if (value > battery_info.batteries[battery].charge_stop) 9700 return -EINVAL; 9701 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9702 return -ENODEV; 9703 battery_info.batteries[battery].charge_start = value; 9704 return count; 9705 9706 case THRESHOLD_STOP: 9707 if (!battery_info.batteries[battery].stop_support) 9708 return -ENODEV; 9709 /* valid values are [1, 100] */ 9710 if (value < 1 || value > 100) 9711 return -EINVAL; 9712 if (value < battery_info.batteries[battery].charge_start) 9713 return -EINVAL; 9714 battery_info.batteries[battery].charge_stop = value; 9715 /* 9716 * When 100 is passed to stop, we need to flip 9717 * it to 0 as that the EC understands that as 9718 * "Default", which will charge to 100% 9719 */ 9720 if (value == 100) 9721 value = 0; 9722 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9723 return -EINVAL; 9724 return count; 9725 default: 9726 pr_crit("Wrong parameter: %d", what); 9727 return -EINVAL; 9728 } 9729 return count; 9730 } 9731 tpacpi_battery_show(int what,struct device * dev,char * buf)9732 static ssize_t tpacpi_battery_show(int what, 9733 struct device *dev, 9734 char *buf) 9735 { 9736 struct power_supply *supply = to_power_supply(dev); 9737 int ret, battery; 9738 /* 9739 * Some systems have support for more than 9740 * one battery. If that is the case, 9741 * tpacpi_battery_probe marked that addressing 9742 * them individually is supported, so we; 9743 * based on the device struct. 9744 * 9745 * On systems that are not supported, we assume 9746 * the primary as most of the ACPI calls fail 9747 * with "Any Battery" as the parameter. 9748 */ 9749 if (battery_info.individual_addressing) 9750 /* BAT_PRIMARY or BAT_SECONDARY */ 9751 battery = tpacpi_battery_get_id(supply->desc->name); 9752 else 9753 battery = BAT_PRIMARY; 9754 if (tpacpi_battery_get(what, battery, &ret)) 9755 return -ENODEV; 9756 return sprintf(buf, "%d\n", ret); 9757 } 9758 charge_control_start_threshold_show(struct device * device,struct device_attribute * attr,char * buf)9759 static ssize_t charge_control_start_threshold_show(struct device *device, 9760 struct device_attribute *attr, 9761 char *buf) 9762 { 9763 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9764 } 9765 charge_control_end_threshold_show(struct device * device,struct device_attribute * attr,char * buf)9766 static ssize_t charge_control_end_threshold_show(struct device *device, 9767 struct device_attribute *attr, 9768 char *buf) 9769 { 9770 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9771 } 9772 charge_behaviour_show(struct device * dev,struct device_attribute * attr,char * buf)9773 static ssize_t charge_behaviour_show(struct device *dev, 9774 struct device_attribute *attr, 9775 char *buf) 9776 { 9777 enum power_supply_charge_behaviour active = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO; 9778 struct power_supply *supply = to_power_supply(dev); 9779 unsigned int available; 9780 int ret, battery; 9781 9782 battery = tpacpi_battery_get_id(supply->desc->name); 9783 available = battery_info.batteries[battery].charge_behaviours; 9784 9785 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) { 9786 if (tpacpi_battery_get(FORCE_DISCHARGE, battery, &ret)) 9787 return -ENODEV; 9788 if (ret) { 9789 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE; 9790 goto out; 9791 } 9792 } 9793 9794 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) { 9795 if (tpacpi_battery_get(INHIBIT_CHARGE, battery, &ret)) 9796 return -ENODEV; 9797 if (ret) { 9798 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE; 9799 goto out; 9800 } 9801 } 9802 9803 out: 9804 return power_supply_charge_behaviour_show(dev, available, active, buf); 9805 } 9806 charge_control_start_threshold_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)9807 static ssize_t charge_control_start_threshold_store(struct device *dev, 9808 struct device_attribute *attr, 9809 const char *buf, size_t count) 9810 { 9811 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9812 } 9813 charge_control_end_threshold_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)9814 static ssize_t charge_control_end_threshold_store(struct device *dev, 9815 struct device_attribute *attr, 9816 const char *buf, size_t count) 9817 { 9818 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9819 } 9820 charge_behaviour_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)9821 static ssize_t charge_behaviour_store(struct device *dev, 9822 struct device_attribute *attr, 9823 const char *buf, size_t count) 9824 { 9825 struct power_supply *supply = to_power_supply(dev); 9826 int selected, battery, ret = 0; 9827 unsigned int available; 9828 9829 battery = tpacpi_battery_get_id(supply->desc->name); 9830 available = battery_info.batteries[battery].charge_behaviours; 9831 selected = power_supply_charge_behaviour_parse(available, buf); 9832 9833 if (selected < 0) 9834 return selected; 9835 9836 switch (selected) { 9837 case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO: 9838 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9839 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9840 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9841 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0)); 9842 if (ret < 0) 9843 return ret; 9844 break; 9845 case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE: 9846 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9847 ret = tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0); 9848 ret = min(ret, tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 1)); 9849 if (ret < 0) 9850 return ret; 9851 break; 9852 case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE: 9853 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9854 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9855 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 1)); 9856 if (ret < 0) 9857 return ret; 9858 break; 9859 default: 9860 dev_err(dev, "Unexpected charge behaviour: %d\n", selected); 9861 return -EINVAL; 9862 } 9863 9864 return count; 9865 } 9866 9867 static DEVICE_ATTR_RW(charge_control_start_threshold); 9868 static DEVICE_ATTR_RW(charge_control_end_threshold); 9869 static DEVICE_ATTR_RW(charge_behaviour); 9870 static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9871 charge_start_threshold, 9872 0644, 9873 charge_control_start_threshold_show, 9874 charge_control_start_threshold_store 9875 ); 9876 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9877 charge_stop_threshold, 9878 0644, 9879 charge_control_end_threshold_show, 9880 charge_control_end_threshold_store 9881 ); 9882 9883 static struct attribute *tpacpi_battery_attrs[] = { 9884 &dev_attr_charge_control_start_threshold.attr, 9885 &dev_attr_charge_control_end_threshold.attr, 9886 &dev_attr_charge_start_threshold.attr, 9887 &dev_attr_charge_stop_threshold.attr, 9888 &dev_attr_charge_behaviour.attr, 9889 NULL, 9890 }; 9891 9892 ATTRIBUTE_GROUPS(tpacpi_battery); 9893 9894 /* ACPI battery hooking */ 9895 tpacpi_battery_add(struct power_supply * battery,struct acpi_battery_hook * hook)9896 static int tpacpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook) 9897 { 9898 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9899 9900 if (tpacpi_battery_probe(batteryid)) 9901 return -ENODEV; 9902 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9903 return -ENODEV; 9904 return 0; 9905 } 9906 tpacpi_battery_remove(struct power_supply * battery,struct acpi_battery_hook * hook)9907 static int tpacpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook) 9908 { 9909 device_remove_groups(&battery->dev, tpacpi_battery_groups); 9910 return 0; 9911 } 9912 9913 static struct acpi_battery_hook battery_hook = { 9914 .add_battery = tpacpi_battery_add, 9915 .remove_battery = tpacpi_battery_remove, 9916 .name = "ThinkPad Battery Extension", 9917 }; 9918 9919 /* Subdriver init/exit */ 9920 9921 static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 9922 /* 9923 * Individual addressing is broken on models that expose the 9924 * primary battery as BAT1. 9925 */ 9926 TPACPI_Q_LNV('G', '8', true), /* ThinkPad X131e */ 9927 TPACPI_Q_LNV('8', 'F', true), /* Thinkpad X120e */ 9928 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 9929 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 9930 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 9931 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 9932 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 9933 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 9934 }; 9935 tpacpi_battery_init(struct ibm_init_struct * ibm)9936 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 9937 { 9938 memset(&battery_info, 0, sizeof(battery_info)); 9939 9940 tp_features.battery_force_primary = tpacpi_check_quirks( 9941 battery_quirk_table, 9942 ARRAY_SIZE(battery_quirk_table)); 9943 9944 battery_hook_register(&battery_hook); 9945 return 0; 9946 } 9947 tpacpi_battery_exit(void)9948 static void tpacpi_battery_exit(void) 9949 { 9950 battery_hook_unregister(&battery_hook); 9951 } 9952 9953 static struct ibm_struct battery_driver_data = { 9954 .name = "battery", 9955 .exit = tpacpi_battery_exit, 9956 }; 9957 9958 /************************************************************************* 9959 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 9960 */ 9961 9962 static struct drm_privacy_screen *lcdshadow_dev; 9963 static acpi_handle lcdshadow_get_handle; 9964 static acpi_handle lcdshadow_set_handle; 9965 lcdshadow_set_sw_state(struct drm_privacy_screen * priv,enum drm_privacy_screen_status state)9966 static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv, 9967 enum drm_privacy_screen_status state) 9968 { 9969 int output; 9970 9971 if (WARN_ON(!mutex_is_locked(&priv->lock))) 9972 return -EIO; 9973 9974 if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state)) 9975 return -EIO; 9976 9977 priv->hw_state = priv->sw_state = state; 9978 return 0; 9979 } 9980 lcdshadow_get_hw_state(struct drm_privacy_screen * priv)9981 static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv) 9982 { 9983 int output; 9984 9985 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 9986 return; 9987 9988 priv->hw_state = priv->sw_state = output & 0x1; 9989 } 9990 9991 static const struct drm_privacy_screen_ops lcdshadow_ops = { 9992 .set_sw_state = lcdshadow_set_sw_state, 9993 .get_hw_state = lcdshadow_get_hw_state, 9994 }; 9995 tpacpi_lcdshadow_init(struct ibm_init_struct * iibm)9996 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 9997 { 9998 acpi_status status1, status2; 9999 int output; 10000 10001 status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle); 10002 status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle); 10003 if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2)) 10004 return 0; 10005 10006 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 10007 return -EIO; 10008 10009 if (!(output & 0x10000)) 10010 return 0; 10011 10012 lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev, 10013 &lcdshadow_ops, NULL); 10014 if (IS_ERR(lcdshadow_dev)) 10015 return PTR_ERR(lcdshadow_dev); 10016 10017 return 0; 10018 } 10019 lcdshadow_exit(void)10020 static void lcdshadow_exit(void) 10021 { 10022 drm_privacy_screen_unregister(lcdshadow_dev); 10023 } 10024 lcdshadow_resume(void)10025 static void lcdshadow_resume(void) 10026 { 10027 if (!lcdshadow_dev) 10028 return; 10029 10030 mutex_lock(&lcdshadow_dev->lock); 10031 lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state); 10032 mutex_unlock(&lcdshadow_dev->lock); 10033 } 10034 lcdshadow_read(struct seq_file * m)10035 static int lcdshadow_read(struct seq_file *m) 10036 { 10037 if (!lcdshadow_dev) { 10038 seq_puts(m, "status:\t\tnot supported\n"); 10039 } else { 10040 seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state); 10041 seq_puts(m, "commands:\t0, 1\n"); 10042 } 10043 10044 return 0; 10045 } 10046 lcdshadow_write(char * buf)10047 static int lcdshadow_write(char *buf) 10048 { 10049 char *cmd; 10050 int res, state = -EINVAL; 10051 10052 if (!lcdshadow_dev) 10053 return -ENODEV; 10054 10055 while ((cmd = strsep(&buf, ","))) { 10056 res = kstrtoint(cmd, 10, &state); 10057 if (res < 0) 10058 return res; 10059 } 10060 10061 if (state >= 2 || state < 0) 10062 return -EINVAL; 10063 10064 mutex_lock(&lcdshadow_dev->lock); 10065 res = lcdshadow_set_sw_state(lcdshadow_dev, state); 10066 mutex_unlock(&lcdshadow_dev->lock); 10067 10068 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 10069 10070 return res; 10071 } 10072 10073 static struct ibm_struct lcdshadow_driver_data = { 10074 .name = "lcdshadow", 10075 .exit = lcdshadow_exit, 10076 .resume = lcdshadow_resume, 10077 .read = lcdshadow_read, 10078 .write = lcdshadow_write, 10079 }; 10080 10081 /************************************************************************* 10082 * Thinkpad sensor interfaces 10083 */ 10084 10085 #define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ 10086 #define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ 10087 #define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ 10088 #define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ 10089 10090 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 10091 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 10092 10093 #define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */ 10094 #define PALMSENSOR_ON_BIT 1 /* psensor status */ 10095 10096 static bool has_palmsensor; 10097 static bool has_lapsensor; 10098 static bool palm_state; 10099 static bool lap_state; 10100 static int dytc_version; 10101 dytc_command(int command,int * output)10102 static int dytc_command(int command, int *output) 10103 { 10104 acpi_handle dytc_handle; 10105 10106 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 10107 /* Platform doesn't support DYTC */ 10108 return -ENODEV; 10109 } 10110 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 10111 return -EIO; 10112 return 0; 10113 } 10114 lapsensor_get(bool * present,bool * state)10115 static int lapsensor_get(bool *present, bool *state) 10116 { 10117 int output, err; 10118 10119 *present = false; 10120 err = dytc_command(DYTC_CMD_GET, &output); 10121 if (err) 10122 return err; 10123 10124 *present = true; /*If we get his far, we have lapmode support*/ 10125 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 10126 return 0; 10127 } 10128 palmsensor_get(bool * present,bool * state)10129 static int palmsensor_get(bool *present, bool *state) 10130 { 10131 acpi_handle psensor_handle; 10132 int output; 10133 10134 *present = false; 10135 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle))) 10136 return -ENODEV; 10137 if (!acpi_evalf(psensor_handle, &output, NULL, "d")) 10138 return -EIO; 10139 10140 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false; 10141 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false; 10142 return 0; 10143 } 10144 lapsensor_refresh(void)10145 static void lapsensor_refresh(void) 10146 { 10147 bool state; 10148 int err; 10149 10150 if (has_lapsensor) { 10151 err = lapsensor_get(&has_lapsensor, &state); 10152 if (err) 10153 return; 10154 if (lap_state != state) { 10155 lap_state = state; 10156 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 10157 } 10158 } 10159 } 10160 palmsensor_refresh(void)10161 static void palmsensor_refresh(void) 10162 { 10163 bool state; 10164 int err; 10165 10166 if (has_palmsensor) { 10167 err = palmsensor_get(&has_palmsensor, &state); 10168 if (err) 10169 return; 10170 if (palm_state != state) { 10171 palm_state = state; 10172 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor"); 10173 } 10174 } 10175 } 10176 dytc_lapmode_show(struct device * dev,struct device_attribute * attr,char * buf)10177 static ssize_t dytc_lapmode_show(struct device *dev, 10178 struct device_attribute *attr, 10179 char *buf) 10180 { 10181 if (has_lapsensor) 10182 return sysfs_emit(buf, "%d\n", lap_state); 10183 return sysfs_emit(buf, "\n"); 10184 } 10185 static DEVICE_ATTR_RO(dytc_lapmode); 10186 palmsensor_show(struct device * dev,struct device_attribute * attr,char * buf)10187 static ssize_t palmsensor_show(struct device *dev, 10188 struct device_attribute *attr, 10189 char *buf) 10190 { 10191 if (has_palmsensor) 10192 return sysfs_emit(buf, "%d\n", palm_state); 10193 return sysfs_emit(buf, "\n"); 10194 } 10195 static DEVICE_ATTR_RO(palmsensor); 10196 10197 static struct attribute *proxsensor_attributes[] = { 10198 &dev_attr_dytc_lapmode.attr, 10199 &dev_attr_palmsensor.attr, 10200 NULL 10201 }; 10202 proxsensor_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)10203 static umode_t proxsensor_attr_is_visible(struct kobject *kobj, 10204 struct attribute *attr, int n) 10205 { 10206 if (attr == &dev_attr_dytc_lapmode.attr) { 10207 /* 10208 * Platforms before DYTC version 5 claim to have a lap sensor, 10209 * but it doesn't work, so we ignore them. 10210 */ 10211 if (!has_lapsensor || dytc_version < 5) 10212 return 0; 10213 } else if (attr == &dev_attr_palmsensor.attr) { 10214 if (!has_palmsensor) 10215 return 0; 10216 } 10217 10218 return attr->mode; 10219 } 10220 10221 static const struct attribute_group proxsensor_attr_group = { 10222 .is_visible = proxsensor_attr_is_visible, 10223 .attrs = proxsensor_attributes, 10224 }; 10225 tpacpi_proxsensor_init(struct ibm_init_struct * iibm)10226 static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm) 10227 { 10228 int palm_err, lap_err; 10229 10230 palm_err = palmsensor_get(&has_palmsensor, &palm_state); 10231 lap_err = lapsensor_get(&has_lapsensor, &lap_state); 10232 /* If support isn't available for both devices return -ENODEV */ 10233 if ((palm_err == -ENODEV) && (lap_err == -ENODEV)) 10234 return -ENODEV; 10235 /* Otherwise, if there was an error return it */ 10236 if (palm_err && (palm_err != -ENODEV)) 10237 return palm_err; 10238 if (lap_err && (lap_err != -ENODEV)) 10239 return lap_err; 10240 10241 return 0; 10242 } 10243 10244 static struct ibm_struct proxsensor_driver_data = { 10245 .name = "proximity-sensor", 10246 }; 10247 10248 /************************************************************************* 10249 * DYTC Platform Profile interface 10250 */ 10251 10252 #define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ 10253 #define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */ 10254 #define DYTC_CMD_RESET 0x1ff /* To reset back to default */ 10255 10256 #define DYTC_CMD_FUNC_CAP 3 /* To get DYTC capabilities */ 10257 #define DYTC_FC_MMC 27 /* MMC Mode supported */ 10258 #define DYTC_FC_PSC 29 /* PSC Mode supported */ 10259 #define DYTC_FC_AMT 31 /* AMT mode supported */ 10260 10261 #define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ 10262 #define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ 10263 10264 #define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ 10265 #define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ 10266 #define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ 10267 10268 #define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ 10269 #define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ 10270 #define DYTC_FUNCTION_MMC 11 /* Function = 11, MMC mode */ 10271 #define DYTC_FUNCTION_PSC 13 /* Function = 13, PSC mode */ 10272 #define DYTC_FUNCTION_AMT 15 /* Function = 15, AMT mode */ 10273 10274 #define DYTC_MODE_AMT_ENABLE 0x1 /* Enable AMT (in balanced mode) */ 10275 #define DYTC_MODE_AMT_DISABLE 0xF /* Disable AMT (in other modes) */ 10276 10277 #define DYTC_MODE_MMC_PERFORM 2 /* High power mode aka performance */ 10278 #define DYTC_MODE_MMC_LOWPOWER 3 /* Low power mode */ 10279 #define DYTC_MODE_MMC_BALANCE 0xF /* Default mode aka balanced */ 10280 #define DYTC_MODE_MMC_DEFAULT 0 /* Default mode from MMC_GET, aka balanced */ 10281 10282 #define DYTC_MODE_PSC_LOWPOWER 3 /* Low power mode */ 10283 #define DYTC_MODE_PSC_BALANCE 5 /* Default mode aka balanced */ 10284 #define DYTC_MODE_PSC_PERFORM 7 /* High power mode aka performance */ 10285 10286 #define DYTC_MODE_PSCV9_LOWPOWER 1 /* Low power mode */ 10287 #define DYTC_MODE_PSCV9_BALANCE 3 /* Default mode aka balanced */ 10288 #define DYTC_MODE_PSCV9_PERFORM 4 /* High power mode aka performance */ 10289 10290 #define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */ 10291 #define DYTC_ERR_SUCCESS 1 /* CMD completed successful */ 10292 10293 #define DYTC_SET_COMMAND(function, mode, on) \ 10294 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ 10295 (mode) << DYTC_SET_MODE_BIT | \ 10296 (on) << DYTC_SET_VALID_BIT) 10297 10298 #define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 0) 10299 #define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 1) 10300 static int dytc_control_amt(bool enable); 10301 static bool dytc_amt_active; 10302 10303 static enum platform_profile_option dytc_current_profile; 10304 static atomic_t dytc_ignore_event = ATOMIC_INIT(0); 10305 static DEFINE_MUTEX(dytc_mutex); 10306 static int dytc_capabilities; 10307 static bool dytc_mmc_get_available; 10308 static int profile_force; 10309 10310 static int platform_psc_profile_lowpower = DYTC_MODE_PSC_LOWPOWER; 10311 static int platform_psc_profile_balanced = DYTC_MODE_PSC_BALANCE; 10312 static int platform_psc_profile_performance = DYTC_MODE_PSC_PERFORM; 10313 convert_dytc_to_profile(int funcmode,int dytcmode,enum platform_profile_option * profile)10314 static int convert_dytc_to_profile(int funcmode, int dytcmode, 10315 enum platform_profile_option *profile) 10316 { 10317 switch (funcmode) { 10318 case DYTC_FUNCTION_MMC: 10319 switch (dytcmode) { 10320 case DYTC_MODE_MMC_LOWPOWER: 10321 *profile = PLATFORM_PROFILE_LOW_POWER; 10322 break; 10323 case DYTC_MODE_MMC_DEFAULT: 10324 case DYTC_MODE_MMC_BALANCE: 10325 *profile = PLATFORM_PROFILE_BALANCED; 10326 break; 10327 case DYTC_MODE_MMC_PERFORM: 10328 *profile = PLATFORM_PROFILE_PERFORMANCE; 10329 break; 10330 default: /* Unknown mode */ 10331 return -EINVAL; 10332 } 10333 return 0; 10334 case DYTC_FUNCTION_PSC: 10335 if (dytcmode == platform_psc_profile_lowpower) 10336 *profile = PLATFORM_PROFILE_LOW_POWER; 10337 else if (dytcmode == platform_psc_profile_balanced) 10338 *profile = PLATFORM_PROFILE_BALANCED; 10339 else if (dytcmode == platform_psc_profile_performance) 10340 *profile = PLATFORM_PROFILE_PERFORMANCE; 10341 else 10342 return -EINVAL; 10343 10344 return 0; 10345 case DYTC_FUNCTION_AMT: 10346 /* For now return balanced. It's the closest we have to 'auto' */ 10347 *profile = PLATFORM_PROFILE_BALANCED; 10348 return 0; 10349 default: 10350 /* Unknown function */ 10351 pr_debug("unknown function 0x%x\n", funcmode); 10352 return -EOPNOTSUPP; 10353 } 10354 return 0; 10355 } 10356 convert_profile_to_dytc(enum platform_profile_option profile,int * perfmode)10357 static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) 10358 { 10359 switch (profile) { 10360 case PLATFORM_PROFILE_LOW_POWER: 10361 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10362 *perfmode = DYTC_MODE_MMC_LOWPOWER; 10363 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10364 *perfmode = platform_psc_profile_lowpower; 10365 break; 10366 case PLATFORM_PROFILE_BALANCED: 10367 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10368 *perfmode = DYTC_MODE_MMC_BALANCE; 10369 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10370 *perfmode = platform_psc_profile_balanced; 10371 break; 10372 case PLATFORM_PROFILE_PERFORMANCE: 10373 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10374 *perfmode = DYTC_MODE_MMC_PERFORM; 10375 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10376 *perfmode = platform_psc_profile_performance; 10377 break; 10378 default: /* Unknown profile */ 10379 return -EOPNOTSUPP; 10380 } 10381 return 0; 10382 } 10383 10384 /* 10385 * dytc_profile_get: Function to register with platform_profile 10386 * handler. Returns current platform profile. 10387 */ dytc_profile_get(struct platform_profile_handler * pprof,enum platform_profile_option * profile)10388 static int dytc_profile_get(struct platform_profile_handler *pprof, 10389 enum platform_profile_option *profile) 10390 { 10391 *profile = dytc_current_profile; 10392 return 0; 10393 } 10394 dytc_control_amt(bool enable)10395 static int dytc_control_amt(bool enable) 10396 { 10397 int dummy; 10398 int err; 10399 int cmd; 10400 10401 if (!(dytc_capabilities & BIT(DYTC_FC_AMT))) { 10402 pr_warn("Attempting to toggle AMT on a system that doesn't advertise support\n"); 10403 return -ENODEV; 10404 } 10405 10406 if (enable) 10407 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_ENABLE, enable); 10408 else 10409 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_DISABLE, enable); 10410 10411 pr_debug("%sabling AMT (cmd 0x%x)", enable ? "en":"dis", cmd); 10412 err = dytc_command(cmd, &dummy); 10413 if (err) 10414 return err; 10415 dytc_amt_active = enable; 10416 return 0; 10417 } 10418 10419 /* 10420 * Helper function - check if we are in CQL mode and if we are 10421 * - disable CQL, 10422 * - run the command 10423 * - enable CQL 10424 * If not in CQL mode, just run the command 10425 */ dytc_cql_command(int command,int * output)10426 static int dytc_cql_command(int command, int *output) 10427 { 10428 int err, cmd_err, dummy; 10429 int cur_funcmode; 10430 10431 /* Determine if we are in CQL mode. This alters the commands we do */ 10432 err = dytc_command(DYTC_CMD_GET, output); 10433 if (err) 10434 return err; 10435 10436 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10437 /* Check if we're OK to return immediately */ 10438 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) 10439 return 0; 10440 10441 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10442 atomic_inc(&dytc_ignore_event); 10443 err = dytc_command(DYTC_DISABLE_CQL, &dummy); 10444 if (err) 10445 return err; 10446 } 10447 10448 cmd_err = dytc_command(command, output); 10449 /* Check return condition after we've restored CQL state */ 10450 10451 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10452 err = dytc_command(DYTC_ENABLE_CQL, &dummy); 10453 if (err) 10454 return err; 10455 } 10456 return cmd_err; 10457 } 10458 10459 /* 10460 * dytc_profile_set: Function to register with platform_profile 10461 * handler. Sets current platform profile. 10462 */ dytc_profile_set(struct platform_profile_handler * pprof,enum platform_profile_option profile)10463 static int dytc_profile_set(struct platform_profile_handler *pprof, 10464 enum platform_profile_option profile) 10465 { 10466 int perfmode; 10467 int output; 10468 int err; 10469 10470 err = mutex_lock_interruptible(&dytc_mutex); 10471 if (err) 10472 return err; 10473 10474 err = convert_profile_to_dytc(profile, &perfmode); 10475 if (err) 10476 goto unlock; 10477 10478 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10479 if (profile == PLATFORM_PROFILE_BALANCED) { 10480 /* 10481 * To get back to balanced mode we need to issue a reset command. 10482 * Note we still need to disable CQL mode before hand and re-enable 10483 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays 10484 * stuck at 0 for aprox. 30 minutes. 10485 */ 10486 err = dytc_cql_command(DYTC_CMD_RESET, &output); 10487 if (err) 10488 goto unlock; 10489 } else { 10490 /* Determine if we are in CQL mode. This alters the commands we do */ 10491 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), 10492 &output); 10493 if (err) 10494 goto unlock; 10495 } 10496 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { 10497 err = dytc_command(DYTC_SET_COMMAND(DYTC_FUNCTION_PSC, perfmode, 1), &output); 10498 if (err) 10499 goto unlock; 10500 10501 /* system supports AMT, activate it when on balanced */ 10502 if (dytc_capabilities & BIT(DYTC_FC_AMT)) 10503 dytc_control_amt(profile == PLATFORM_PROFILE_BALANCED); 10504 } 10505 /* Success - update current profile */ 10506 dytc_current_profile = profile; 10507 unlock: 10508 mutex_unlock(&dytc_mutex); 10509 return err; 10510 } 10511 dytc_profile_refresh(void)10512 static void dytc_profile_refresh(void) 10513 { 10514 enum platform_profile_option profile; 10515 int output = 0, err = 0; 10516 int perfmode, funcmode = 0; 10517 10518 mutex_lock(&dytc_mutex); 10519 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10520 if (dytc_mmc_get_available) 10521 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10522 else 10523 err = dytc_cql_command(DYTC_CMD_GET, &output); 10524 funcmode = DYTC_FUNCTION_MMC; 10525 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { 10526 err = dytc_command(DYTC_CMD_GET, &output); 10527 /* Check if we are PSC mode, or have AMT enabled */ 10528 funcmode = (output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10529 } else { /* Unknown profile mode */ 10530 err = -ENODEV; 10531 } 10532 mutex_unlock(&dytc_mutex); 10533 if (err) 10534 return; 10535 10536 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; 10537 err = convert_dytc_to_profile(funcmode, perfmode, &profile); 10538 if (!err && profile != dytc_current_profile) { 10539 dytc_current_profile = profile; 10540 platform_profile_notify(); 10541 } 10542 } 10543 10544 static struct platform_profile_handler dytc_profile = { 10545 .profile_get = dytc_profile_get, 10546 .profile_set = dytc_profile_set, 10547 }; 10548 tpacpi_dytc_profile_init(struct ibm_init_struct * iibm)10549 static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) 10550 { 10551 int err, output; 10552 10553 /* Setup supported modes */ 10554 set_bit(PLATFORM_PROFILE_LOW_POWER, dytc_profile.choices); 10555 set_bit(PLATFORM_PROFILE_BALANCED, dytc_profile.choices); 10556 set_bit(PLATFORM_PROFILE_PERFORMANCE, dytc_profile.choices); 10557 10558 err = dytc_command(DYTC_CMD_QUERY, &output); 10559 if (err) 10560 return err; 10561 10562 if (output & BIT(DYTC_QUERY_ENABLE_BIT)) 10563 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; 10564 10565 dbg_printk(TPACPI_DBG_INIT, "DYTC version %d\n", dytc_version); 10566 /* Check DYTC is enabled and supports mode setting */ 10567 if (dytc_version < 5) 10568 return -ENODEV; 10569 10570 /* Check what capabilities are supported */ 10571 err = dytc_command(DYTC_CMD_FUNC_CAP, &dytc_capabilities); 10572 if (err) 10573 return err; 10574 10575 /* Check if user wants to override the profile selection */ 10576 if (profile_force) { 10577 switch (profile_force) { 10578 case -1: 10579 dytc_capabilities = 0; 10580 break; 10581 case 1: 10582 dytc_capabilities = BIT(DYTC_FC_MMC); 10583 break; 10584 case 2: 10585 dytc_capabilities = BIT(DYTC_FC_PSC); 10586 break; 10587 } 10588 pr_debug("Profile selection forced: 0x%x\n", dytc_capabilities); 10589 } 10590 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { /* MMC MODE */ 10591 pr_debug("MMC is supported\n"); 10592 /* 10593 * Check if MMC_GET functionality available 10594 * Version > 6 and return success from MMC_GET command 10595 */ 10596 dytc_mmc_get_available = false; 10597 if (dytc_version >= 6) { 10598 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10599 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS)) 10600 dytc_mmc_get_available = true; 10601 } 10602 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { /* PSC MODE */ 10603 pr_debug("PSC is supported\n"); 10604 if (dytc_version >= 9) { /* update profiles for DYTC 9 and up */ 10605 platform_psc_profile_lowpower = DYTC_MODE_PSCV9_LOWPOWER; 10606 platform_psc_profile_balanced = DYTC_MODE_PSCV9_BALANCE; 10607 platform_psc_profile_performance = DYTC_MODE_PSCV9_PERFORM; 10608 } 10609 } else { 10610 dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n"); 10611 return -ENODEV; 10612 } 10613 10614 dbg_printk(TPACPI_DBG_INIT, 10615 "DYTC version %d: thermal mode available\n", dytc_version); 10616 10617 /* Create platform_profile structure and register */ 10618 err = platform_profile_register(&dytc_profile); 10619 /* 10620 * If for some reason platform_profiles aren't enabled 10621 * don't quit terminally. 10622 */ 10623 if (err) 10624 return -ENODEV; 10625 10626 /* Ensure initial values are correct */ 10627 dytc_profile_refresh(); 10628 10629 /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */ 10630 if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10631 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); 10632 10633 return 0; 10634 } 10635 dytc_profile_exit(void)10636 static void dytc_profile_exit(void) 10637 { 10638 platform_profile_remove(); 10639 } 10640 10641 static struct ibm_struct dytc_profile_driver_data = { 10642 .name = "dytc-profile", 10643 .exit = dytc_profile_exit, 10644 }; 10645 10646 /************************************************************************* 10647 * Keyboard language interface 10648 */ 10649 10650 struct keyboard_lang_data { 10651 const char *lang_str; 10652 int lang_code; 10653 }; 10654 10655 static const struct keyboard_lang_data keyboard_lang_data[] = { 10656 {"be", 0x080c}, 10657 {"cz", 0x0405}, 10658 {"da", 0x0406}, 10659 {"de", 0x0c07}, 10660 {"en", 0x0000}, 10661 {"es", 0x2c0a}, 10662 {"et", 0x0425}, 10663 {"fr", 0x040c}, 10664 {"fr-ch", 0x100c}, 10665 {"hu", 0x040e}, 10666 {"it", 0x0410}, 10667 {"jp", 0x0411}, 10668 {"nl", 0x0413}, 10669 {"nn", 0x0414}, 10670 {"pl", 0x0415}, 10671 {"pt", 0x0816}, 10672 {"sl", 0x041b}, 10673 {"sv", 0x081d}, 10674 {"tr", 0x041f}, 10675 }; 10676 set_keyboard_lang_command(int command)10677 static int set_keyboard_lang_command(int command) 10678 { 10679 acpi_handle sskl_handle; 10680 int output; 10681 10682 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) { 10683 /* Platform doesn't support SSKL */ 10684 return -ENODEV; 10685 } 10686 10687 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command)) 10688 return -EIO; 10689 10690 return 0; 10691 } 10692 get_keyboard_lang(int * output)10693 static int get_keyboard_lang(int *output) 10694 { 10695 acpi_handle gskl_handle; 10696 int kbd_lang; 10697 10698 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) { 10699 /* Platform doesn't support GSKL */ 10700 return -ENODEV; 10701 } 10702 10703 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000)) 10704 return -EIO; 10705 10706 /* 10707 * METHOD_ERR gets returned on devices where there are no special (e.g. '=', 10708 * '(' and ')') keys which use layout dependent key-press emulation. 10709 */ 10710 if (kbd_lang & METHOD_ERR) 10711 return -ENODEV; 10712 10713 *output = kbd_lang; 10714 10715 return 0; 10716 } 10717 10718 /* sysfs keyboard language entry */ keyboard_lang_show(struct device * dev,struct device_attribute * attr,char * buf)10719 static ssize_t keyboard_lang_show(struct device *dev, 10720 struct device_attribute *attr, 10721 char *buf) 10722 { 10723 int output, err, i, len = 0; 10724 10725 err = get_keyboard_lang(&output); 10726 if (err) 10727 return err; 10728 10729 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10730 if (i) 10731 len += sysfs_emit_at(buf, len, "%s", " "); 10732 10733 if (output == keyboard_lang_data[i].lang_code) { 10734 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str); 10735 } else { 10736 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str); 10737 } 10738 } 10739 len += sysfs_emit_at(buf, len, "\n"); 10740 10741 return len; 10742 } 10743 keyboard_lang_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)10744 static ssize_t keyboard_lang_store(struct device *dev, 10745 struct device_attribute *attr, 10746 const char *buf, size_t count) 10747 { 10748 int err, i; 10749 bool lang_found = false; 10750 int lang_code = 0; 10751 10752 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10753 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) { 10754 lang_code = keyboard_lang_data[i].lang_code; 10755 lang_found = true; 10756 break; 10757 } 10758 } 10759 10760 if (lang_found) { 10761 lang_code = lang_code | 1 << 24; 10762 10763 /* Set language code */ 10764 err = set_keyboard_lang_command(lang_code); 10765 if (err) 10766 return err; 10767 } else { 10768 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n"); 10769 return -EINVAL; 10770 } 10771 10772 tpacpi_disclose_usertask(attr->attr.name, 10773 "keyboard language is set to %s\n", buf); 10774 10775 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang"); 10776 10777 return count; 10778 } 10779 static DEVICE_ATTR_RW(keyboard_lang); 10780 10781 static struct attribute *kbdlang_attributes[] = { 10782 &dev_attr_keyboard_lang.attr, 10783 NULL 10784 }; 10785 kbdlang_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)10786 static umode_t kbdlang_attr_is_visible(struct kobject *kobj, 10787 struct attribute *attr, int n) 10788 { 10789 return tp_features.kbd_lang ? attr->mode : 0; 10790 } 10791 10792 static const struct attribute_group kbdlang_attr_group = { 10793 .is_visible = kbdlang_attr_is_visible, 10794 .attrs = kbdlang_attributes, 10795 }; 10796 tpacpi_kbdlang_init(struct ibm_init_struct * iibm)10797 static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm) 10798 { 10799 int err, output; 10800 10801 err = get_keyboard_lang(&output); 10802 tp_features.kbd_lang = !err; 10803 return err; 10804 } 10805 10806 static struct ibm_struct kbdlang_driver_data = { 10807 .name = "kbdlang", 10808 }; 10809 10810 /************************************************************************* 10811 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN 10812 * and WLAN feature. 10813 */ 10814 #define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000 10815 #define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4) 10816 #define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8) 10817 static bool has_antennatype; 10818 static int wwan_antennatype; 10819 dprc_command(int command,int * output)10820 static int dprc_command(int command, int *output) 10821 { 10822 acpi_handle dprc_handle; 10823 10824 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) { 10825 /* Platform doesn't support DPRC */ 10826 return -ENODEV; 10827 } 10828 10829 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command)) 10830 return -EIO; 10831 10832 /* 10833 * METHOD_ERR gets returned on devices where few commands are not supported 10834 * for example command to get WWAN Antenna type command is not supported on 10835 * some devices. 10836 */ 10837 if (*output & METHOD_ERR) 10838 return -ENODEV; 10839 10840 return 0; 10841 } 10842 get_wwan_antenna(int * wwan_antennatype)10843 static int get_wwan_antenna(int *wwan_antennatype) 10844 { 10845 int output, err; 10846 10847 /* Get current Antenna type */ 10848 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output); 10849 if (err) 10850 return err; 10851 10852 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT) 10853 *wwan_antennatype = 1; 10854 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT) 10855 *wwan_antennatype = 2; 10856 else 10857 return -ENODEV; 10858 10859 return 0; 10860 } 10861 10862 /* sysfs wwan antenna type entry */ wwan_antenna_type_show(struct device * dev,struct device_attribute * attr,char * buf)10863 static ssize_t wwan_antenna_type_show(struct device *dev, 10864 struct device_attribute *attr, 10865 char *buf) 10866 { 10867 switch (wwan_antennatype) { 10868 case 1: 10869 return sysfs_emit(buf, "type a\n"); 10870 case 2: 10871 return sysfs_emit(buf, "type b\n"); 10872 default: 10873 return -ENODATA; 10874 } 10875 } 10876 static DEVICE_ATTR_RO(wwan_antenna_type); 10877 10878 static struct attribute *dprc_attributes[] = { 10879 &dev_attr_wwan_antenna_type.attr, 10880 NULL 10881 }; 10882 dprc_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)10883 static umode_t dprc_attr_is_visible(struct kobject *kobj, 10884 struct attribute *attr, int n) 10885 { 10886 return has_antennatype ? attr->mode : 0; 10887 } 10888 10889 static const struct attribute_group dprc_attr_group = { 10890 .is_visible = dprc_attr_is_visible, 10891 .attrs = dprc_attributes, 10892 }; 10893 tpacpi_dprc_init(struct ibm_init_struct * iibm)10894 static int tpacpi_dprc_init(struct ibm_init_struct *iibm) 10895 { 10896 int err; 10897 10898 err = get_wwan_antenna(&wwan_antennatype); 10899 if (err) 10900 return err; 10901 10902 has_antennatype = true; 10903 return 0; 10904 } 10905 10906 static struct ibm_struct dprc_driver_data = { 10907 .name = "dprc", 10908 }; 10909 10910 /* --------------------------------------------------------------------- */ 10911 10912 static struct attribute *tpacpi_driver_attributes[] = { 10913 &driver_attr_debug_level.attr, 10914 &driver_attr_version.attr, 10915 &driver_attr_interface_version.attr, 10916 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 10917 &driver_attr_wlsw_emulstate.attr, 10918 &driver_attr_bluetooth_emulstate.attr, 10919 &driver_attr_wwan_emulstate.attr, 10920 &driver_attr_uwb_emulstate.attr, 10921 #endif 10922 NULL 10923 }; 10924 10925 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES tpacpi_attr_is_visible(struct kobject * kobj,struct attribute * attr,int n)10926 static umode_t tpacpi_attr_is_visible(struct kobject *kobj, 10927 struct attribute *attr, int n) 10928 { 10929 if (attr == &driver_attr_wlsw_emulstate.attr) { 10930 if (!dbg_wlswemul) 10931 return 0; 10932 } else if (attr == &driver_attr_bluetooth_emulstate.attr) { 10933 if (!dbg_bluetoothemul) 10934 return 0; 10935 } else if (attr == &driver_attr_wwan_emulstate.attr) { 10936 if (!dbg_wwanemul) 10937 return 0; 10938 } else if (attr == &driver_attr_uwb_emulstate.attr) { 10939 if (!dbg_uwbemul) 10940 return 0; 10941 } 10942 10943 return attr->mode; 10944 } 10945 #endif 10946 10947 static const struct attribute_group tpacpi_driver_attr_group = { 10948 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 10949 .is_visible = tpacpi_attr_is_visible, 10950 #endif 10951 .attrs = tpacpi_driver_attributes, 10952 }; 10953 10954 static const struct attribute_group *tpacpi_driver_groups[] = { 10955 &tpacpi_driver_attr_group, 10956 NULL, 10957 }; 10958 10959 static const struct attribute_group *tpacpi_groups[] = { 10960 &adaptive_kbd_attr_group, 10961 &hotkey_attr_group, 10962 &bluetooth_attr_group, 10963 &wan_attr_group, 10964 &cmos_attr_group, 10965 &proxsensor_attr_group, 10966 &kbdlang_attr_group, 10967 &dprc_attr_group, 10968 NULL, 10969 }; 10970 10971 static const struct attribute_group *tpacpi_hwmon_groups[] = { 10972 &thermal_attr_group, 10973 &temp_label_attr_group, 10974 &fan_attr_group, 10975 NULL, 10976 }; 10977 10978 static const struct attribute_group *tpacpi_hwmon_driver_groups[] = { 10979 &fan_driver_attr_group, 10980 NULL, 10981 }; 10982 10983 /**************************************************************************** 10984 **************************************************************************** 10985 * 10986 * Platform drivers 10987 * 10988 **************************************************************************** 10989 ****************************************************************************/ 10990 10991 static struct platform_driver tpacpi_pdriver = { 10992 .driver = { 10993 .name = TPACPI_DRVR_NAME, 10994 .pm = &tpacpi_pm, 10995 .groups = tpacpi_driver_groups, 10996 .dev_groups = tpacpi_groups, 10997 }, 10998 .shutdown = tpacpi_shutdown_handler, 10999 }; 11000 11001 static struct platform_driver tpacpi_hwmon_pdriver = { 11002 .driver = { 11003 .name = TPACPI_HWMON_DRVR_NAME, 11004 .groups = tpacpi_hwmon_driver_groups, 11005 }, 11006 }; 11007 11008 /**************************************************************************** 11009 **************************************************************************** 11010 * 11011 * Infrastructure 11012 * 11013 **************************************************************************** 11014 ****************************************************************************/ 11015 11016 /* 11017 * HKEY event callout for other subdrivers go here 11018 * (yes, it is ugly, but it is quick, safe, and gets the job done 11019 */ tpacpi_driver_event(const unsigned int hkey_event)11020 static void tpacpi_driver_event(const unsigned int hkey_event) 11021 { 11022 if (ibm_backlight_device) { 11023 switch (hkey_event) { 11024 case TP_HKEY_EV_BRGHT_UP: 11025 case TP_HKEY_EV_BRGHT_DOWN: 11026 tpacpi_brightness_notify_change(); 11027 } 11028 } 11029 if (alsa_card) { 11030 switch (hkey_event) { 11031 case TP_HKEY_EV_VOL_UP: 11032 case TP_HKEY_EV_VOL_DOWN: 11033 case TP_HKEY_EV_VOL_MUTE: 11034 volume_alsa_notify_change(); 11035 } 11036 } 11037 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 11038 enum led_brightness brightness; 11039 11040 mutex_lock(&kbdlight_mutex); 11041 11042 /* 11043 * Check the brightness actually changed, setting the brightness 11044 * through kbdlight_set_level() also triggers this event. 11045 */ 11046 brightness = kbdlight_sysfs_get(NULL); 11047 if (kbdlight_brightness != brightness) { 11048 kbdlight_brightness = brightness; 11049 led_classdev_notify_brightness_hw_changed( 11050 &tpacpi_led_kbdlight.led_classdev, brightness); 11051 } 11052 11053 mutex_unlock(&kbdlight_mutex); 11054 } 11055 11056 if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) { 11057 lapsensor_refresh(); 11058 /* If we are already accessing DYTC then skip dytc update */ 11059 if (!atomic_add_unless(&dytc_ignore_event, -1, 0)) 11060 dytc_profile_refresh(); 11061 } 11062 11063 if (lcdshadow_dev && hkey_event == TP_HKEY_EV_PRIVACYGUARD_TOGGLE) { 11064 enum drm_privacy_screen_status old_hw_state; 11065 bool changed; 11066 11067 mutex_lock(&lcdshadow_dev->lock); 11068 old_hw_state = lcdshadow_dev->hw_state; 11069 lcdshadow_get_hw_state(lcdshadow_dev); 11070 changed = lcdshadow_dev->hw_state != old_hw_state; 11071 mutex_unlock(&lcdshadow_dev->lock); 11072 11073 if (changed) 11074 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 11075 } 11076 if (hkey_event == TP_HKEY_EV_AMT_TOGGLE) { 11077 /* If we're enabling AMT we need to force balanced mode */ 11078 if (!dytc_amt_active) 11079 /* This will also set AMT mode enabled */ 11080 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); 11081 else 11082 dytc_control_amt(!dytc_amt_active); 11083 } 11084 11085 } 11086 hotkey_driver_event(const unsigned int scancode)11087 static void hotkey_driver_event(const unsigned int scancode) 11088 { 11089 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 11090 } 11091 11092 /* --------------------------------------------------------------------- */ 11093 11094 /* /proc support */ 11095 static struct proc_dir_entry *proc_dir; 11096 11097 /* 11098 * Module and infrastructure proble, init and exit handling 11099 */ 11100 11101 static bool force_load; 11102 11103 #ifdef CONFIG_THINKPAD_ACPI_DEBUG str_supported(int is_supported)11104 static const char * __init str_supported(int is_supported) 11105 { 11106 static char text_unsupported[] __initdata = "not supported"; 11107 11108 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 11109 } 11110 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 11111 ibm_exit(struct ibm_struct * ibm)11112 static void ibm_exit(struct ibm_struct *ibm) 11113 { 11114 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 11115 11116 list_del_init(&ibm->all_drivers); 11117 11118 if (ibm->flags.acpi_notify_installed) { 11119 dbg_printk(TPACPI_DBG_EXIT, 11120 "%s: acpi_remove_notify_handler\n", ibm->name); 11121 BUG_ON(!ibm->acpi); 11122 acpi_remove_notify_handler(*ibm->acpi->handle, 11123 ibm->acpi->type, 11124 dispatch_acpi_notify); 11125 ibm->flags.acpi_notify_installed = 0; 11126 } 11127 11128 if (ibm->flags.proc_created) { 11129 dbg_printk(TPACPI_DBG_EXIT, 11130 "%s: remove_proc_entry\n", ibm->name); 11131 remove_proc_entry(ibm->name, proc_dir); 11132 ibm->flags.proc_created = 0; 11133 } 11134 11135 if (ibm->flags.acpi_driver_registered) { 11136 dbg_printk(TPACPI_DBG_EXIT, 11137 "%s: acpi_bus_unregister_driver\n", ibm->name); 11138 BUG_ON(!ibm->acpi); 11139 acpi_bus_unregister_driver(ibm->acpi->driver); 11140 kfree(ibm->acpi->driver); 11141 ibm->acpi->driver = NULL; 11142 ibm->flags.acpi_driver_registered = 0; 11143 } 11144 11145 if (ibm->flags.init_called && ibm->exit) { 11146 ibm->exit(); 11147 ibm->flags.init_called = 0; 11148 } 11149 11150 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 11151 } 11152 ibm_init(struct ibm_init_struct * iibm)11153 static int __init ibm_init(struct ibm_init_struct *iibm) 11154 { 11155 int ret; 11156 struct ibm_struct *ibm = iibm->data; 11157 struct proc_dir_entry *entry; 11158 11159 BUG_ON(ibm == NULL); 11160 11161 INIT_LIST_HEAD(&ibm->all_drivers); 11162 11163 if (ibm->flags.experimental && !experimental) 11164 return 0; 11165 11166 dbg_printk(TPACPI_DBG_INIT, 11167 "probing for %s\n", ibm->name); 11168 11169 if (iibm->init) { 11170 ret = iibm->init(iibm); 11171 if (ret > 0 || ret == -ENODEV) 11172 return 0; /* subdriver functionality not available */ 11173 if (ret) 11174 return ret; 11175 11176 ibm->flags.init_called = 1; 11177 } 11178 11179 if (ibm->acpi) { 11180 if (ibm->acpi->hid) { 11181 ret = register_tpacpi_subdriver(ibm); 11182 if (ret) 11183 goto err_out; 11184 } 11185 11186 if (ibm->acpi->notify) { 11187 ret = setup_acpi_notify(ibm); 11188 if (ret == -ENODEV) { 11189 pr_notice("disabling subdriver %s\n", 11190 ibm->name); 11191 ret = 0; 11192 goto err_out; 11193 } 11194 if (ret < 0) 11195 goto err_out; 11196 } 11197 } 11198 11199 dbg_printk(TPACPI_DBG_INIT, 11200 "%s installed\n", ibm->name); 11201 11202 if (ibm->read) { 11203 umode_t mode = iibm->base_procfs_mode; 11204 11205 if (!mode) 11206 mode = S_IRUGO; 11207 if (ibm->write) 11208 mode |= S_IWUSR; 11209 entry = proc_create_data(ibm->name, mode, proc_dir, 11210 &dispatch_proc_ops, ibm); 11211 if (!entry) { 11212 pr_err("unable to create proc entry %s\n", ibm->name); 11213 ret = -ENODEV; 11214 goto err_out; 11215 } 11216 ibm->flags.proc_created = 1; 11217 } 11218 11219 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 11220 11221 return 0; 11222 11223 err_out: 11224 dbg_printk(TPACPI_DBG_INIT, 11225 "%s: at error exit path with result %d\n", 11226 ibm->name, ret); 11227 11228 ibm_exit(ibm); 11229 return (ret < 0) ? ret : 0; 11230 } 11231 11232 /* Probing */ 11233 tpacpi_parse_fw_id(const char * const s,u32 * model,u16 * release)11234 static char __init tpacpi_parse_fw_id(const char * const s, 11235 u32 *model, u16 *release) 11236 { 11237 int i; 11238 11239 if (!s || strlen(s) < 8) 11240 goto invalid; 11241 11242 for (i = 0; i < 8; i++) 11243 if (!((s[i] >= '0' && s[i] <= '9') || 11244 (s[i] >= 'A' && s[i] <= 'Z'))) 11245 goto invalid; 11246 11247 /* 11248 * Most models: xxyTkkWW (#.##c) 11249 * Ancient 570/600 and -SL lacks (#.##c) 11250 */ 11251 if (s[3] == 'T' || s[3] == 'N') { 11252 *model = TPID(s[0], s[1]); 11253 *release = TPVER(s[4], s[5]); 11254 return s[2]; 11255 11256 /* New models: xxxyTkkW (#.##c); T550 and some others */ 11257 } else if (s[4] == 'T' || s[4] == 'N') { 11258 *model = TPID3(s[0], s[1], s[2]); 11259 *release = TPVER(s[5], s[6]); 11260 return s[3]; 11261 } 11262 11263 invalid: 11264 return '\0'; 11265 } 11266 find_new_ec_fwstr(const struct dmi_header * dm,void * private)11267 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 11268 { 11269 char *ec_fw_string = (char *) private; 11270 const char *dmi_data = (const char *)dm; 11271 /* 11272 * ThinkPad Embedded Controller Program Table on newer models 11273 * 11274 * Offset | Name | Width | Description 11275 * ---------------------------------------------------- 11276 * 0x00 | Type | BYTE | 0x8C 11277 * 0x01 | Length | BYTE | 11278 * 0x02 | Handle | WORD | Varies 11279 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 11280 * 0x0A | OEM struct offset | BYTE | 0x0B 11281 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 11282 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 11283 * 0x0D | ECP version ID | STR ID | 11284 * 0x0E | ECP release date | STR ID | 11285 */ 11286 11287 /* Return if data structure not match */ 11288 if (dm->type != 140 || dm->length < 0x0F || 11289 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 11290 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 11291 dmi_data[0x0C] != 0x01) 11292 return; 11293 11294 /* fwstr is the first 8byte string */ 11295 strncpy(ec_fw_string, dmi_data + 0x0F, 8); 11296 } 11297 11298 /* returns 0 - probe ok, or < 0 - probe error. 11299 * Probe ok doesn't mean thinkpad found. 11300 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ get_thinkpad_model_data(struct thinkpad_id_data * tp)11301 static int __must_check __init get_thinkpad_model_data( 11302 struct thinkpad_id_data *tp) 11303 { 11304 const struct dmi_device *dev = NULL; 11305 char ec_fw_string[18] = {0}; 11306 char const *s; 11307 char t; 11308 11309 if (!tp) 11310 return -EINVAL; 11311 11312 memset(tp, 0, sizeof(*tp)); 11313 11314 if (dmi_name_in_vendors("IBM")) 11315 tp->vendor = PCI_VENDOR_ID_IBM; 11316 else if (dmi_name_in_vendors("LENOVO")) 11317 tp->vendor = PCI_VENDOR_ID_LENOVO; 11318 else 11319 return 0; 11320 11321 s = dmi_get_system_info(DMI_BIOS_VERSION); 11322 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 11323 if (s && !tp->bios_version_str) 11324 return -ENOMEM; 11325 11326 /* Really ancient ThinkPad 240X will fail this, which is fine */ 11327 t = tpacpi_parse_fw_id(tp->bios_version_str, 11328 &tp->bios_model, &tp->bios_release); 11329 if (t != 'E' && t != 'C') 11330 return 0; 11331 11332 /* 11333 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 11334 * X32 or newer, all Z series; Some models must have an 11335 * up-to-date BIOS or they will not be detected. 11336 * 11337 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11338 */ 11339 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 11340 if (sscanf(dev->name, 11341 "IBM ThinkPad Embedded Controller -[%17c", 11342 ec_fw_string) == 1) { 11343 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 11344 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 11345 break; 11346 } 11347 } 11348 11349 /* Newer ThinkPads have different EC program info table */ 11350 if (!ec_fw_string[0]) 11351 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 11352 11353 if (ec_fw_string[0]) { 11354 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 11355 if (!tp->ec_version_str) 11356 return -ENOMEM; 11357 11358 t = tpacpi_parse_fw_id(ec_fw_string, 11359 &tp->ec_model, &tp->ec_release); 11360 if (t != 'H') { 11361 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 11362 ec_fw_string); 11363 pr_notice("please report this to %s\n", TPACPI_MAIL); 11364 } 11365 } 11366 11367 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 11368 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 11369 tp->model_str = kstrdup(s, GFP_KERNEL); 11370 if (!tp->model_str) 11371 return -ENOMEM; 11372 } else { 11373 s = dmi_get_system_info(DMI_BIOS_VENDOR); 11374 if (s && !(strncasecmp(s, "Lenovo", 6))) { 11375 tp->model_str = kstrdup(s, GFP_KERNEL); 11376 if (!tp->model_str) 11377 return -ENOMEM; 11378 } 11379 } 11380 11381 s = dmi_get_system_info(DMI_PRODUCT_NAME); 11382 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 11383 if (s && !tp->nummodel_str) 11384 return -ENOMEM; 11385 11386 return 0; 11387 } 11388 probe_for_thinkpad(void)11389 static int __init probe_for_thinkpad(void) 11390 { 11391 int is_thinkpad; 11392 11393 if (acpi_disabled) 11394 return -ENODEV; 11395 11396 /* It would be dangerous to run the driver in this case */ 11397 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 11398 return -ENODEV; 11399 11400 /* 11401 * Non-ancient models have better DMI tagging, but very old models 11402 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 11403 */ 11404 is_thinkpad = (thinkpad_id.model_str != NULL) || 11405 (thinkpad_id.ec_model != 0) || 11406 tpacpi_is_fw_known(); 11407 11408 /* The EC handler is required */ 11409 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 11410 if (!ec_handle) { 11411 if (is_thinkpad) 11412 pr_err("Not yet supported ThinkPad detected!\n"); 11413 return -ENODEV; 11414 } 11415 11416 if (!is_thinkpad && !force_load) 11417 return -ENODEV; 11418 11419 return 0; 11420 } 11421 thinkpad_acpi_init_banner(void)11422 static void __init thinkpad_acpi_init_banner(void) 11423 { 11424 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 11425 pr_info("%s\n", TPACPI_URL); 11426 11427 pr_info("ThinkPad BIOS %s, EC %s\n", 11428 (thinkpad_id.bios_version_str) ? 11429 thinkpad_id.bios_version_str : "unknown", 11430 (thinkpad_id.ec_version_str) ? 11431 thinkpad_id.ec_version_str : "unknown"); 11432 11433 BUG_ON(!thinkpad_id.vendor); 11434 11435 if (thinkpad_id.model_str) 11436 pr_info("%s %s, model %s\n", 11437 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 11438 "IBM" : ((thinkpad_id.vendor == 11439 PCI_VENDOR_ID_LENOVO) ? 11440 "Lenovo" : "Unknown vendor"), 11441 thinkpad_id.model_str, 11442 (thinkpad_id.nummodel_str) ? 11443 thinkpad_id.nummodel_str : "unknown"); 11444 } 11445 11446 /* Module init, exit, parameters */ 11447 11448 static struct ibm_init_struct ibms_init[] __initdata = { 11449 { 11450 .data = &thinkpad_acpi_driver_data, 11451 }, 11452 { 11453 .init = hotkey_init, 11454 .data = &hotkey_driver_data, 11455 }, 11456 { 11457 .init = bluetooth_init, 11458 .data = &bluetooth_driver_data, 11459 }, 11460 { 11461 .init = wan_init, 11462 .data = &wan_driver_data, 11463 }, 11464 { 11465 .init = uwb_init, 11466 .data = &uwb_driver_data, 11467 }, 11468 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 11469 { 11470 .init = video_init, 11471 .base_procfs_mode = S_IRUSR, 11472 .data = &video_driver_data, 11473 }, 11474 #endif 11475 { 11476 .init = kbdlight_init, 11477 .data = &kbdlight_driver_data, 11478 }, 11479 { 11480 .init = light_init, 11481 .data = &light_driver_data, 11482 }, 11483 { 11484 .init = cmos_init, 11485 .data = &cmos_driver_data, 11486 }, 11487 { 11488 .init = led_init, 11489 .data = &led_driver_data, 11490 }, 11491 { 11492 .init = beep_init, 11493 .data = &beep_driver_data, 11494 }, 11495 { 11496 .init = thermal_init, 11497 .data = &thermal_driver_data, 11498 }, 11499 { 11500 .init = brightness_init, 11501 .data = &brightness_driver_data, 11502 }, 11503 { 11504 .init = volume_init, 11505 .data = &volume_driver_data, 11506 }, 11507 { 11508 .init = fan_init, 11509 .data = &fan_driver_data, 11510 }, 11511 { 11512 .init = mute_led_init, 11513 .data = &mute_led_driver_data, 11514 }, 11515 { 11516 .init = tpacpi_battery_init, 11517 .data = &battery_driver_data, 11518 }, 11519 { 11520 .init = tpacpi_lcdshadow_init, 11521 .data = &lcdshadow_driver_data, 11522 }, 11523 { 11524 .init = tpacpi_proxsensor_init, 11525 .data = &proxsensor_driver_data, 11526 }, 11527 { 11528 .init = tpacpi_dytc_profile_init, 11529 .data = &dytc_profile_driver_data, 11530 }, 11531 { 11532 .init = tpacpi_kbdlang_init, 11533 .data = &kbdlang_driver_data, 11534 }, 11535 { 11536 .init = tpacpi_dprc_init, 11537 .data = &dprc_driver_data, 11538 }, 11539 }; 11540 set_ibm_param(const char * val,const struct kernel_param * kp)11541 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 11542 { 11543 unsigned int i; 11544 struct ibm_struct *ibm; 11545 11546 if (!kp || !kp->name || !val) 11547 return -EINVAL; 11548 11549 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11550 ibm = ibms_init[i].data; 11551 if (!ibm || !ibm->name) 11552 continue; 11553 11554 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 11555 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 11556 return -ENOSPC; 11557 strcpy(ibms_init[i].param, val); 11558 return 0; 11559 } 11560 } 11561 11562 return -EINVAL; 11563 } 11564 11565 module_param(experimental, int, 0444); 11566 MODULE_PARM_DESC(experimental, 11567 "Enables experimental features when non-zero"); 11568 11569 module_param_named(debug, dbg_level, uint, 0); 11570 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 11571 11572 module_param(force_load, bool, 0444); 11573 MODULE_PARM_DESC(force_load, 11574 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 11575 11576 module_param_named(fan_control, fan_control_allowed, bool, 0444); 11577 MODULE_PARM_DESC(fan_control, 11578 "Enables setting fan parameters features when true"); 11579 11580 module_param_named(brightness_mode, brightness_mode, uint, 0444); 11581 MODULE_PARM_DESC(brightness_mode, 11582 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 11583 11584 module_param(brightness_enable, uint, 0444); 11585 MODULE_PARM_DESC(brightness_enable, 11586 "Enables backlight control when 1, disables when 0"); 11587 11588 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 11589 module_param_named(volume_mode, volume_mode, uint, 0444); 11590 MODULE_PARM_DESC(volume_mode, 11591 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 11592 11593 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 11594 MODULE_PARM_DESC(volume_capabilities, 11595 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 11596 11597 module_param_named(volume_control, volume_control_allowed, bool, 0444); 11598 MODULE_PARM_DESC(volume_control, 11599 "Enables software override for the console audio control when true"); 11600 11601 module_param_named(software_mute, software_mute_requested, bool, 0444); 11602 MODULE_PARM_DESC(software_mute, 11603 "Request full software mute control"); 11604 11605 /* ALSA module API parameters */ 11606 module_param_named(index, alsa_index, int, 0444); 11607 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 11608 module_param_named(id, alsa_id, charp, 0444); 11609 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 11610 module_param_named(enable, alsa_enable, bool, 0444); 11611 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 11612 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 11613 11614 /* The module parameter can't be read back, that's why 0 is used here */ 11615 #define TPACPI_PARAM(feature) \ 11616 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 11617 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 11618 11619 TPACPI_PARAM(hotkey); 11620 TPACPI_PARAM(bluetooth); 11621 TPACPI_PARAM(video); 11622 TPACPI_PARAM(light); 11623 TPACPI_PARAM(cmos); 11624 TPACPI_PARAM(led); 11625 TPACPI_PARAM(beep); 11626 TPACPI_PARAM(brightness); 11627 TPACPI_PARAM(volume); 11628 TPACPI_PARAM(fan); 11629 11630 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11631 module_param(dbg_wlswemul, uint, 0444); 11632 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 11633 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 11634 MODULE_PARM_DESC(wlsw_state, 11635 "Initial state of the emulated WLSW switch"); 11636 11637 module_param(dbg_bluetoothemul, uint, 0444); 11638 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 11639 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 11640 MODULE_PARM_DESC(bluetooth_state, 11641 "Initial state of the emulated bluetooth switch"); 11642 11643 module_param(dbg_wwanemul, uint, 0444); 11644 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 11645 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 11646 MODULE_PARM_DESC(wwan_state, 11647 "Initial state of the emulated WWAN switch"); 11648 11649 module_param(dbg_uwbemul, uint, 0444); 11650 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 11651 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 11652 MODULE_PARM_DESC(uwb_state, 11653 "Initial state of the emulated UWB switch"); 11654 #endif 11655 11656 module_param(profile_force, int, 0444); 11657 MODULE_PARM_DESC(profile_force, "Force profile mode. -1=off, 1=MMC, 2=PSC"); 11658 thinkpad_acpi_module_exit(void)11659 static void thinkpad_acpi_module_exit(void) 11660 { 11661 struct ibm_struct *ibm, *itmp; 11662 11663 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 11664 11665 if (tpacpi_hwmon) 11666 hwmon_device_unregister(tpacpi_hwmon); 11667 if (tp_features.sensors_pdrv_registered) 11668 platform_driver_unregister(&tpacpi_hwmon_pdriver); 11669 if (tp_features.platform_drv_registered) 11670 platform_driver_unregister(&tpacpi_pdriver); 11671 11672 list_for_each_entry_safe_reverse(ibm, itmp, 11673 &tpacpi_all_drivers, 11674 all_drivers) { 11675 ibm_exit(ibm); 11676 } 11677 11678 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 11679 11680 if (tpacpi_inputdev) { 11681 if (tp_features.input_device_registered) 11682 input_unregister_device(tpacpi_inputdev); 11683 else 11684 input_free_device(tpacpi_inputdev); 11685 kfree(hotkey_keycode_map); 11686 } 11687 11688 if (tpacpi_sensors_pdev) 11689 platform_device_unregister(tpacpi_sensors_pdev); 11690 if (tpacpi_pdev) 11691 platform_device_unregister(tpacpi_pdev); 11692 if (proc_dir) 11693 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 11694 if (tpacpi_wq) 11695 destroy_workqueue(tpacpi_wq); 11696 11697 kfree(thinkpad_id.bios_version_str); 11698 kfree(thinkpad_id.ec_version_str); 11699 kfree(thinkpad_id.model_str); 11700 kfree(thinkpad_id.nummodel_str); 11701 } 11702 11703 thinkpad_acpi_module_init(void)11704 static int __init thinkpad_acpi_module_init(void) 11705 { 11706 const struct dmi_system_id *dmi_id; 11707 int ret, i; 11708 acpi_object_type obj_type; 11709 11710 tpacpi_lifecycle = TPACPI_LIFE_INIT; 11711 11712 /* Driver-level probe */ 11713 11714 ret = get_thinkpad_model_data(&thinkpad_id); 11715 if (ret) { 11716 pr_err("unable to get DMI data: %d\n", ret); 11717 thinkpad_acpi_module_exit(); 11718 return ret; 11719 } 11720 ret = probe_for_thinkpad(); 11721 if (ret) { 11722 thinkpad_acpi_module_exit(); 11723 return ret; 11724 } 11725 11726 /* Driver initialization */ 11727 11728 thinkpad_acpi_init_banner(); 11729 tpacpi_check_outdated_fw(); 11730 11731 TPACPI_ACPIHANDLE_INIT(ecrd); 11732 TPACPI_ACPIHANDLE_INIT(ecwr); 11733 11734 /* 11735 * Quirk: in some models (e.g. X380 Yoga), an object named ECRD 11736 * exists, but it is a register, not a method. 11737 */ 11738 if (ecrd_handle) { 11739 acpi_get_type(ecrd_handle, &obj_type); 11740 if (obj_type != ACPI_TYPE_METHOD) 11741 ecrd_handle = NULL; 11742 } 11743 if (ecwr_handle) { 11744 acpi_get_type(ecwr_handle, &obj_type); 11745 if (obj_type != ACPI_TYPE_METHOD) 11746 ecwr_handle = NULL; 11747 } 11748 11749 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 11750 if (!tpacpi_wq) { 11751 thinkpad_acpi_module_exit(); 11752 return -ENOMEM; 11753 } 11754 11755 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 11756 if (!proc_dir) { 11757 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 11758 thinkpad_acpi_module_exit(); 11759 return -ENODEV; 11760 } 11761 11762 dmi_id = dmi_first_match(fwbug_list); 11763 if (dmi_id) 11764 tp_features.quirks = dmi_id->driver_data; 11765 11766 /* Device initialization */ 11767 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, PLATFORM_DEVID_NONE, 11768 NULL, 0); 11769 if (IS_ERR(tpacpi_pdev)) { 11770 ret = PTR_ERR(tpacpi_pdev); 11771 tpacpi_pdev = NULL; 11772 pr_err("unable to register platform device\n"); 11773 thinkpad_acpi_module_exit(); 11774 return ret; 11775 } 11776 tpacpi_sensors_pdev = platform_device_register_simple( 11777 TPACPI_HWMON_DRVR_NAME, 11778 PLATFORM_DEVID_NONE, NULL, 0); 11779 if (IS_ERR(tpacpi_sensors_pdev)) { 11780 ret = PTR_ERR(tpacpi_sensors_pdev); 11781 tpacpi_sensors_pdev = NULL; 11782 pr_err("unable to register hwmon platform device\n"); 11783 thinkpad_acpi_module_exit(); 11784 return ret; 11785 } 11786 11787 mutex_init(&tpacpi_inputdev_send_mutex); 11788 tpacpi_inputdev = input_allocate_device(); 11789 if (!tpacpi_inputdev) { 11790 thinkpad_acpi_module_exit(); 11791 return -ENOMEM; 11792 } else { 11793 /* Prepare input device, but don't register */ 11794 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 11795 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 11796 tpacpi_inputdev->id.bustype = BUS_HOST; 11797 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 11798 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 11799 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 11800 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 11801 } 11802 11803 /* Init subdriver dependencies */ 11804 tpacpi_detect_brightness_capabilities(); 11805 11806 /* Init subdrivers */ 11807 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11808 ret = ibm_init(&ibms_init[i]); 11809 if (ret >= 0 && *ibms_init[i].param) 11810 ret = ibms_init[i].data->write(ibms_init[i].param); 11811 if (ret < 0) { 11812 thinkpad_acpi_module_exit(); 11813 return ret; 11814 } 11815 } 11816 11817 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 11818 11819 ret = platform_driver_register(&tpacpi_pdriver); 11820 if (ret) { 11821 pr_err("unable to register main platform driver\n"); 11822 thinkpad_acpi_module_exit(); 11823 return ret; 11824 } 11825 tp_features.platform_drv_registered = 1; 11826 11827 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 11828 if (ret) { 11829 pr_err("unable to register hwmon platform driver\n"); 11830 thinkpad_acpi_module_exit(); 11831 return ret; 11832 } 11833 tp_features.sensors_pdrv_registered = 1; 11834 11835 tpacpi_hwmon = hwmon_device_register_with_groups( 11836 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, tpacpi_hwmon_groups); 11837 if (IS_ERR(tpacpi_hwmon)) { 11838 ret = PTR_ERR(tpacpi_hwmon); 11839 tpacpi_hwmon = NULL; 11840 pr_err("unable to register hwmon device\n"); 11841 thinkpad_acpi_module_exit(); 11842 return ret; 11843 } 11844 11845 ret = input_register_device(tpacpi_inputdev); 11846 if (ret < 0) { 11847 pr_err("unable to register input device\n"); 11848 thinkpad_acpi_module_exit(); 11849 return ret; 11850 } else { 11851 tp_features.input_device_registered = 1; 11852 } 11853 11854 return 0; 11855 } 11856 11857 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 11858 11859 /* 11860 * This will autoload the driver in almost every ThinkPad 11861 * in widespread use. 11862 * 11863 * Only _VERY_ old models, like the 240, 240x and 570 lack 11864 * the HKEY event interface. 11865 */ 11866 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 11867 11868 /* 11869 * DMI matching for module autoloading 11870 * 11871 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11872 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 11873 * 11874 * Only models listed in thinkwiki will be supported, so add yours 11875 * if it is not there yet. 11876 */ 11877 #define IBM_BIOS_MODULE_ALIAS(__type) \ 11878 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 11879 11880 /* Ancient thinkpad BIOSes have to be identified by 11881 * BIOS type or model number, and there are far less 11882 * BIOS types than model numbers... */ 11883 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 11884 11885 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 11886 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 11887 MODULE_DESCRIPTION(TPACPI_DESC); 11888 MODULE_VERSION(TPACPI_VERSION); 11889 MODULE_LICENSE("GPL"); 11890 11891 module_init(thinkpad_acpi_module_init); 11892 module_exit(thinkpad_acpi_module_exit); 11893