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/module.h> 54 #include <linux/mutex.h> 55 #include <linux/nvram.h> 56 #include <linux/pci.h> 57 #include <linux/platform_device.h> 58 #include <linux/platform_profile.h> 59 #include <linux/power_supply.h> 60 #include <linux/proc_fs.h> 61 #include <linux/rfkill.h> 62 #include <linux/sched.h> 63 #include <linux/sched/signal.h> 64 #include <linux/seq_file.h> 65 #include <linux/slab.h> 66 #include <linux/string.h> 67 #include <linux/string_helpers.h> 68 #include <linux/sysfs.h> 69 #include <linux/types.h> 70 #include <linux/uaccess.h> 71 #include <linux/workqueue.h> 72 73 #include <acpi/battery.h> 74 #include <acpi/video.h> 75 76 #include <drm/drm_privacy_screen_driver.h> 77 78 #include <sound/control.h> 79 #include <sound/core.h> 80 #include <sound/initval.h> 81 82 #include "dual_accel_detect.h" 83 84 /* ThinkPad CMOS commands */ 85 #define TP_CMOS_VOLUME_DOWN 0 86 #define TP_CMOS_VOLUME_UP 1 87 #define TP_CMOS_VOLUME_MUTE 2 88 #define TP_CMOS_BRIGHTNESS_UP 4 89 #define TP_CMOS_BRIGHTNESS_DOWN 5 90 #define TP_CMOS_THINKLIGHT_ON 12 91 #define TP_CMOS_THINKLIGHT_OFF 13 92 93 /* NVRAM Addresses */ 94 enum tp_nvram_addr { 95 TP_NVRAM_ADDR_HK2 = 0x57, 96 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 97 TP_NVRAM_ADDR_VIDEO = 0x59, 98 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 99 TP_NVRAM_ADDR_MIXER = 0x60, 100 }; 101 102 /* NVRAM bit masks */ 103 enum { 104 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 105 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 106 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 107 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 108 TP_NVRAM_MASK_THINKLIGHT = 0x10, 109 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 110 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 111 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 112 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 113 TP_NVRAM_MASK_MUTE = 0x40, 114 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 115 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 116 TP_NVRAM_POS_LEVEL_VOLUME = 0, 117 }; 118 119 /* Misc NVRAM-related */ 120 enum { 121 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 122 }; 123 124 /* ACPI HIDs */ 125 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 126 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 127 #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 128 #define TPACPI_ACPI_EC_HID "PNP0C09" 129 130 /* Input IDs */ 131 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 132 #define TPACPI_HKEY_INPUT_VERSION 0x4101 133 134 /* ACPI \WGSV commands */ 135 enum { 136 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 137 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 138 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 139 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 140 }; 141 142 /* TP_ACPI_WGSV_GET_STATE bits */ 143 enum { 144 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 145 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 146 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 147 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 148 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 149 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 150 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 151 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 152 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 153 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 154 }; 155 156 /* HKEY events */ 157 enum tpacpi_hkey_event_t { 158 /* Hotkey-related */ 159 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ 160 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 161 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 162 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 163 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 164 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 165 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 166 TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */ 167 TP_HKEY_EV_AMT_TOGGLE = 0x131a, /* Toggle AMT on/off */ 168 169 /* Reasons for waking up from S3/S4 */ 170 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 171 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 172 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 173 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 174 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 175 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 176 177 /* Auto-sleep after eject request */ 178 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 179 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 180 181 /* Misc bay events */ 182 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 183 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 184 or port replicator */ 185 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 186 dock or port replicator */ 187 /* 188 * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013 189 * when keyboard cover is attached, detached or folded onto the back 190 */ 191 TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */ 192 TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */ 193 194 /* User-interface events */ 195 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 196 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 197 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 198 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 199 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 200 * enter/leave tablet mode 201 */ 202 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 203 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 204 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 205 206 /* Key-related user-interface events */ 207 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 208 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 209 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 210 211 /* Thermal events */ 212 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 213 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 214 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 215 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 216 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ 217 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set 218 * command completed. Related to 219 * AML DYTC */ 220 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation 221 * changed. Related to AML GMTS */ 222 223 /* AC-related events */ 224 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 225 226 /* Further user-interface events */ 227 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ 228 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ 229 230 /* Misc */ 231 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 232 }; 233 234 /**************************************************************************** 235 * Main driver 236 */ 237 238 #define TPACPI_NAME "thinkpad" 239 #define TPACPI_DESC "ThinkPad ACPI Extras" 240 #define TPACPI_FILE TPACPI_NAME "_acpi" 241 #define TPACPI_URL "http://ibm-acpi.sf.net/" 242 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 243 244 #define TPACPI_PROC_DIR "ibm" 245 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 246 #define TPACPI_DRVR_NAME TPACPI_FILE 247 #define TPACPI_DRVR_SHORTNAME "tpacpi" 248 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 249 250 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 251 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 252 253 #define TPACPI_MAX_ACPI_ARGS 3 254 255 /* Debugging printk groups */ 256 #define TPACPI_DBG_ALL 0xffff 257 #define TPACPI_DBG_DISCLOSETASK 0x8000 258 #define TPACPI_DBG_INIT 0x0001 259 #define TPACPI_DBG_EXIT 0x0002 260 #define TPACPI_DBG_RFKILL 0x0004 261 #define TPACPI_DBG_HKEY 0x0008 262 #define TPACPI_DBG_FAN 0x0010 263 #define TPACPI_DBG_BRGHT 0x0020 264 #define TPACPI_DBG_MIXER 0x0040 265 266 #define FAN_NOT_PRESENT 65535 267 268 /**************************************************************************** 269 * Driver-wide structs and misc. variables 270 */ 271 272 struct ibm_struct; 273 274 struct tp_acpi_drv_struct { 275 const struct acpi_device_id *hid; 276 struct acpi_driver *driver; 277 278 void (*notify) (struct ibm_struct *, u32); 279 acpi_handle *handle; 280 u32 type; 281 struct acpi_device *device; 282 }; 283 284 struct ibm_struct { 285 char *name; 286 287 int (*read) (struct seq_file *); 288 int (*write) (char *); 289 void (*exit) (void); 290 void (*resume) (void); 291 void (*suspend) (void); 292 void (*shutdown) (void); 293 294 struct list_head all_drivers; 295 296 struct tp_acpi_drv_struct *acpi; 297 298 struct { 299 u8 acpi_driver_registered:1; 300 u8 acpi_notify_installed:1; 301 u8 proc_created:1; 302 u8 init_called:1; 303 u8 experimental:1; 304 } flags; 305 }; 306 307 struct ibm_init_struct { 308 char param[32]; 309 310 int (*init) (struct ibm_init_struct *); 311 umode_t base_procfs_mode; 312 struct ibm_struct *data; 313 }; 314 315 /* DMI Quirks */ 316 struct quirk_entry { 317 bool btusb_bug; 318 u32 s2idle_bug_mmio; 319 }; 320 321 static struct quirk_entry quirk_btusb_bug = { 322 .btusb_bug = true, 323 }; 324 325 static struct quirk_entry quirk_s2idle_bug = { 326 .s2idle_bug_mmio = 0xfed80380, 327 }; 328 329 static struct { 330 u32 bluetooth:1; 331 u32 hotkey:1; 332 u32 hotkey_mask:1; 333 u32 hotkey_wlsw:1; 334 enum { 335 TP_HOTKEY_TABLET_NONE = 0, 336 TP_HOTKEY_TABLET_USES_MHKG, 337 TP_HOTKEY_TABLET_USES_GMMS, 338 } hotkey_tablet; 339 u32 kbdlight:1; 340 u32 light:1; 341 u32 light_status:1; 342 u32 bright_acpimode:1; 343 u32 bright_unkfw:1; 344 u32 wan:1; 345 u32 uwb:1; 346 u32 fan_ctrl_status_undef:1; 347 u32 second_fan:1; 348 u32 second_fan_ctl:1; 349 u32 beep_needs_two_args:1; 350 u32 mixer_no_level_control:1; 351 u32 battery_force_primary:1; 352 u32 input_device_registered:1; 353 u32 platform_drv_registered:1; 354 u32 sensors_pdrv_registered:1; 355 u32 hotkey_poll_active:1; 356 u32 has_adaptive_kbd:1; 357 u32 kbd_lang:1; 358 struct quirk_entry *quirks; 359 } tp_features; 360 361 static struct { 362 u16 hotkey_mask_ff:1; 363 u16 volume_ctrl_forbidden:1; 364 } tp_warned; 365 366 struct thinkpad_id_data { 367 unsigned int vendor; /* ThinkPad vendor: 368 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 369 370 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 371 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 372 373 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ 374 u32 ec_model; 375 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ 376 u16 ec_release; 377 378 char *model_str; /* ThinkPad T43 */ 379 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 380 }; 381 static struct thinkpad_id_data thinkpad_id; 382 383 static enum { 384 TPACPI_LIFE_INIT = 0, 385 TPACPI_LIFE_RUNNING, 386 TPACPI_LIFE_EXITING, 387 } tpacpi_lifecycle; 388 389 static int experimental; 390 static u32 dbg_level; 391 392 static struct workqueue_struct *tpacpi_wq; 393 394 enum led_status_t { 395 TPACPI_LED_OFF = 0, 396 TPACPI_LED_ON, 397 TPACPI_LED_BLINK, 398 }; 399 400 /* tpacpi LED class */ 401 struct tpacpi_led_classdev { 402 struct led_classdev led_classdev; 403 int led; 404 }; 405 406 /* brightness level capabilities */ 407 static unsigned int bright_maxlvl; /* 0 = unknown */ 408 409 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 410 static int dbg_wlswemul; 411 static bool tpacpi_wlsw_emulstate; 412 static int dbg_bluetoothemul; 413 static bool tpacpi_bluetooth_emulstate; 414 static int dbg_wwanemul; 415 static bool tpacpi_wwan_emulstate; 416 static int dbg_uwbemul; 417 static bool tpacpi_uwb_emulstate; 418 #endif 419 420 421 /************************************************************************* 422 * Debugging helpers 423 */ 424 425 #define dbg_printk(a_dbg_level, format, arg...) \ 426 do { \ 427 if (dbg_level & (a_dbg_level)) \ 428 printk(KERN_DEBUG pr_fmt("%s: " format), \ 429 __func__, ##arg); \ 430 } while (0) 431 432 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 433 #define vdbg_printk dbg_printk 434 static const char *str_supported(int is_supported); 435 #else 436 static inline const char *str_supported(int is_supported) { return ""; } 437 #define vdbg_printk(a_dbg_level, format, arg...) \ 438 do { if (0) no_printk(format, ##arg); } while (0) 439 #endif 440 441 static void tpacpi_log_usertask(const char * const what) 442 { 443 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 444 what, task_tgid_vnr(current)); 445 } 446 447 #define tpacpi_disclose_usertask(what, format, arg...) \ 448 do { \ 449 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 450 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 451 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 452 what, task_tgid_vnr(current), ## arg); \ 453 } \ 454 } while (0) 455 456 /* 457 * Quirk handling helpers 458 * 459 * ThinkPad IDs and versions seen in the field so far are 460 * two or three characters from the set [0-9A-Z], i.e. base 36. 461 * 462 * We use values well outside that range as specials. 463 */ 464 465 #define TPACPI_MATCH_ANY 0xffffffffU 466 #define TPACPI_MATCH_ANY_VERSION 0xffffU 467 #define TPACPI_MATCH_UNKNOWN 0U 468 469 /* TPID('1', 'Y') == 0x3159 */ 470 #define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) 471 #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) 472 #define TPVER TPID 473 474 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 475 { .vendor = PCI_VENDOR_ID_IBM, \ 476 .bios = TPID(__id1, __id2), \ 477 .ec = TPACPI_MATCH_ANY, \ 478 .quirks = (__quirk) } 479 480 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 481 { .vendor = PCI_VENDOR_ID_LENOVO, \ 482 .bios = TPID(__id1, __id2), \ 483 .ec = TPACPI_MATCH_ANY, \ 484 .quirks = (__quirk) } 485 486 #define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ 487 { .vendor = PCI_VENDOR_ID_LENOVO, \ 488 .bios = TPID3(__id1, __id2, __id3), \ 489 .ec = TPACPI_MATCH_ANY, \ 490 .quirks = (__quirk) } 491 492 #define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ 493 { .vendor = PCI_VENDOR_ID_IBM, \ 494 .bios = TPACPI_MATCH_ANY, \ 495 .ec = TPID(__id1, __id2), \ 496 .quirks = (__quirk) } 497 498 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 499 { .vendor = PCI_VENDOR_ID_LENOVO, \ 500 .bios = TPACPI_MATCH_ANY, \ 501 .ec = TPID(__id1, __id2), \ 502 .quirks = (__quirk) } 503 504 struct tpacpi_quirk { 505 unsigned int vendor; 506 u32 bios; 507 u32 ec; 508 unsigned long quirks; 509 }; 510 511 /** 512 * tpacpi_check_quirks() - search BIOS/EC version on a list 513 * @qlist: array of &struct tpacpi_quirk 514 * @qlist_size: number of elements in @qlist 515 * 516 * Iterates over a quirks list until one is found that matches the 517 * ThinkPad's vendor, BIOS and EC model. 518 * 519 * Returns 0 if nothing matches, otherwise returns the quirks field of 520 * the matching &struct tpacpi_quirk entry. 521 * 522 * The match criteria is: vendor, ec and bios much match. 523 */ 524 static unsigned long __init tpacpi_check_quirks( 525 const struct tpacpi_quirk *qlist, 526 unsigned int qlist_size) 527 { 528 while (qlist_size) { 529 if ((qlist->vendor == thinkpad_id.vendor || 530 qlist->vendor == TPACPI_MATCH_ANY) && 531 (qlist->bios == thinkpad_id.bios_model || 532 qlist->bios == TPACPI_MATCH_ANY) && 533 (qlist->ec == thinkpad_id.ec_model || 534 qlist->ec == TPACPI_MATCH_ANY)) 535 return qlist->quirks; 536 537 qlist_size--; 538 qlist++; 539 } 540 return 0; 541 } 542 543 static inline bool __pure __init tpacpi_is_lenovo(void) 544 { 545 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 546 } 547 548 static inline bool __pure __init tpacpi_is_ibm(void) 549 { 550 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 551 } 552 553 /**************************************************************************** 554 **************************************************************************** 555 * 556 * ACPI Helpers and device model 557 * 558 **************************************************************************** 559 ****************************************************************************/ 560 561 /************************************************************************* 562 * ACPI basic handles 563 */ 564 565 static acpi_handle root_handle; 566 static acpi_handle ec_handle; 567 568 #define TPACPI_HANDLE(object, parent, paths...) \ 569 static acpi_handle object##_handle; \ 570 static const acpi_handle * const object##_parent __initconst = \ 571 &parent##_handle; \ 572 static char *object##_paths[] __initdata = { paths } 573 574 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 575 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 576 577 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 578 /* T4x, X31, X40 */ 579 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 580 "\\CMS", /* R40, R40e */ 581 ); /* all others */ 582 583 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 584 "^HKEY", /* R30, R31 */ 585 "HKEY", /* all others */ 586 ); /* 570 */ 587 588 /************************************************************************* 589 * ACPI helpers 590 */ 591 592 static int acpi_evalf(acpi_handle handle, 593 int *res, char *method, char *fmt, ...) 594 { 595 char *fmt0 = fmt; 596 struct acpi_object_list params; 597 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 598 struct acpi_buffer result, *resultp; 599 union acpi_object out_obj; 600 acpi_status status; 601 va_list ap; 602 char res_type; 603 int success; 604 int quiet; 605 606 if (!*fmt) { 607 pr_err("acpi_evalf() called with empty format\n"); 608 return 0; 609 } 610 611 if (*fmt == 'q') { 612 quiet = 1; 613 fmt++; 614 } else 615 quiet = 0; 616 617 res_type = *(fmt++); 618 619 params.count = 0; 620 params.pointer = &in_objs[0]; 621 622 va_start(ap, fmt); 623 while (*fmt) { 624 char c = *(fmt++); 625 switch (c) { 626 case 'd': /* int */ 627 in_objs[params.count].integer.value = va_arg(ap, int); 628 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 629 break; 630 /* add more types as needed */ 631 default: 632 pr_err("acpi_evalf() called with invalid format character '%c'\n", 633 c); 634 va_end(ap); 635 return 0; 636 } 637 } 638 va_end(ap); 639 640 if (res_type != 'v') { 641 result.length = sizeof(out_obj); 642 result.pointer = &out_obj; 643 resultp = &result; 644 } else 645 resultp = NULL; 646 647 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 648 649 switch (res_type) { 650 case 'd': /* int */ 651 success = (status == AE_OK && 652 out_obj.type == ACPI_TYPE_INTEGER); 653 if (success && res) 654 *res = out_obj.integer.value; 655 break; 656 case 'v': /* void */ 657 success = status == AE_OK; 658 break; 659 /* add more types as needed */ 660 default: 661 pr_err("acpi_evalf() called with invalid format character '%c'\n", 662 res_type); 663 return 0; 664 } 665 666 if (!success && !quiet) 667 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 668 method, fmt0, acpi_format_exception(status)); 669 670 return success; 671 } 672 673 static int acpi_ec_read(int i, u8 *p) 674 { 675 int v; 676 677 if (ecrd_handle) { 678 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 679 return 0; 680 *p = v; 681 } else { 682 if (ec_read(i, p) < 0) 683 return 0; 684 } 685 686 return 1; 687 } 688 689 static int acpi_ec_write(int i, u8 v) 690 { 691 if (ecwr_handle) { 692 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 693 return 0; 694 } else { 695 if (ec_write(i, v) < 0) 696 return 0; 697 } 698 699 return 1; 700 } 701 702 static int issue_thinkpad_cmos_command(int cmos_cmd) 703 { 704 if (!cmos_handle) 705 return -ENXIO; 706 707 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 708 return -EIO; 709 710 return 0; 711 } 712 713 /************************************************************************* 714 * ACPI device model 715 */ 716 717 #define TPACPI_ACPIHANDLE_INIT(object) \ 718 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 719 object##_paths, ARRAY_SIZE(object##_paths)) 720 721 static void __init drv_acpi_handle_init(const char *name, 722 acpi_handle *handle, const acpi_handle parent, 723 char **paths, const int num_paths) 724 { 725 int i; 726 acpi_status status; 727 728 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 729 name); 730 731 for (i = 0; i < num_paths; i++) { 732 status = acpi_get_handle(parent, paths[i], handle); 733 if (ACPI_SUCCESS(status)) { 734 dbg_printk(TPACPI_DBG_INIT, 735 "Found ACPI handle %s for %s\n", 736 paths[i], name); 737 return; 738 } 739 } 740 741 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 742 name); 743 *handle = NULL; 744 } 745 746 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 747 u32 level, void *context, void **return_value) 748 { 749 if (!strcmp(context, "video")) { 750 struct acpi_device *dev = acpi_fetch_acpi_dev(handle); 751 752 if (!dev || strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 753 return AE_OK; 754 } 755 756 *(acpi_handle *)return_value = handle; 757 758 return AE_CTRL_TERMINATE; 759 } 760 761 static void __init tpacpi_acpi_handle_locate(const char *name, 762 const char *hid, 763 acpi_handle *handle) 764 { 765 acpi_status status; 766 acpi_handle device_found; 767 768 BUG_ON(!name || !handle); 769 vdbg_printk(TPACPI_DBG_INIT, 770 "trying to locate ACPI handle for %s, using HID %s\n", 771 name, hid ? hid : "NULL"); 772 773 memset(&device_found, 0, sizeof(device_found)); 774 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 775 (void *)name, &device_found); 776 777 *handle = NULL; 778 779 if (ACPI_SUCCESS(status)) { 780 *handle = device_found; 781 dbg_printk(TPACPI_DBG_INIT, 782 "Found ACPI handle for %s\n", name); 783 } else { 784 vdbg_printk(TPACPI_DBG_INIT, 785 "Could not locate an ACPI handle for %s: %s\n", 786 name, acpi_format_exception(status)); 787 } 788 } 789 790 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 791 { 792 struct ibm_struct *ibm = data; 793 794 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 795 return; 796 797 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 798 return; 799 800 ibm->acpi->notify(ibm, event); 801 } 802 803 static int __init setup_acpi_notify(struct ibm_struct *ibm) 804 { 805 acpi_status status; 806 807 BUG_ON(!ibm->acpi); 808 809 if (!*ibm->acpi->handle) 810 return 0; 811 812 vdbg_printk(TPACPI_DBG_INIT, 813 "setting up ACPI notify for %s\n", ibm->name); 814 815 ibm->acpi->device = acpi_fetch_acpi_dev(*ibm->acpi->handle); 816 if (!ibm->acpi->device) { 817 pr_err("acpi_fetch_acpi_dev(%s) failed\n", ibm->name); 818 return -ENODEV; 819 } 820 821 ibm->acpi->device->driver_data = ibm; 822 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 823 TPACPI_ACPI_EVENT_PREFIX, 824 ibm->name); 825 826 status = acpi_install_notify_handler(*ibm->acpi->handle, 827 ibm->acpi->type, dispatch_acpi_notify, ibm); 828 if (ACPI_FAILURE(status)) { 829 if (status == AE_ALREADY_EXISTS) { 830 pr_notice("another device driver is already handling %s events\n", 831 ibm->name); 832 } else { 833 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 834 ibm->name, acpi_format_exception(status)); 835 } 836 return -ENODEV; 837 } 838 ibm->flags.acpi_notify_installed = 1; 839 return 0; 840 } 841 842 static int __init tpacpi_device_add(struct acpi_device *device) 843 { 844 return 0; 845 } 846 847 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 848 { 849 int rc; 850 851 dbg_printk(TPACPI_DBG_INIT, 852 "registering %s as an ACPI driver\n", ibm->name); 853 854 BUG_ON(!ibm->acpi); 855 856 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 857 if (!ibm->acpi->driver) { 858 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 859 return -ENOMEM; 860 } 861 862 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 863 ibm->acpi->driver->ids = ibm->acpi->hid; 864 865 ibm->acpi->driver->ops.add = &tpacpi_device_add; 866 867 rc = acpi_bus_register_driver(ibm->acpi->driver); 868 if (rc < 0) { 869 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 870 ibm->name, rc); 871 kfree(ibm->acpi->driver); 872 ibm->acpi->driver = NULL; 873 } else if (!rc) 874 ibm->flags.acpi_driver_registered = 1; 875 876 return rc; 877 } 878 879 880 /**************************************************************************** 881 **************************************************************************** 882 * 883 * Procfs Helpers 884 * 885 **************************************************************************** 886 ****************************************************************************/ 887 888 static int dispatch_proc_show(struct seq_file *m, void *v) 889 { 890 struct ibm_struct *ibm = m->private; 891 892 if (!ibm || !ibm->read) 893 return -EINVAL; 894 return ibm->read(m); 895 } 896 897 static int dispatch_proc_open(struct inode *inode, struct file *file) 898 { 899 return single_open(file, dispatch_proc_show, pde_data(inode)); 900 } 901 902 static ssize_t dispatch_proc_write(struct file *file, 903 const char __user *userbuf, 904 size_t count, loff_t *pos) 905 { 906 struct ibm_struct *ibm = pde_data(file_inode(file)); 907 char *kernbuf; 908 int ret; 909 910 if (!ibm || !ibm->write) 911 return -EINVAL; 912 if (count > PAGE_SIZE - 1) 913 return -EINVAL; 914 915 kernbuf = kmalloc(count + 1, GFP_KERNEL); 916 if (!kernbuf) 917 return -ENOMEM; 918 919 if (copy_from_user(kernbuf, userbuf, count)) { 920 kfree(kernbuf); 921 return -EFAULT; 922 } 923 924 kernbuf[count] = 0; 925 ret = ibm->write(kernbuf); 926 if (ret == 0) 927 ret = count; 928 929 kfree(kernbuf); 930 931 return ret; 932 } 933 934 static const struct proc_ops dispatch_proc_ops = { 935 .proc_open = dispatch_proc_open, 936 .proc_read = seq_read, 937 .proc_lseek = seq_lseek, 938 .proc_release = single_release, 939 .proc_write = dispatch_proc_write, 940 }; 941 942 /**************************************************************************** 943 **************************************************************************** 944 * 945 * Device model: input, hwmon and platform 946 * 947 **************************************************************************** 948 ****************************************************************************/ 949 950 static struct platform_device *tpacpi_pdev; 951 static struct platform_device *tpacpi_sensors_pdev; 952 static struct device *tpacpi_hwmon; 953 static struct input_dev *tpacpi_inputdev; 954 static struct mutex tpacpi_inputdev_send_mutex; 955 static LIST_HEAD(tpacpi_all_drivers); 956 957 #ifdef CONFIG_PM_SLEEP 958 static int tpacpi_suspend_handler(struct device *dev) 959 { 960 struct ibm_struct *ibm, *itmp; 961 962 list_for_each_entry_safe(ibm, itmp, 963 &tpacpi_all_drivers, 964 all_drivers) { 965 if (ibm->suspend) 966 (ibm->suspend)(); 967 } 968 969 return 0; 970 } 971 972 static int tpacpi_resume_handler(struct device *dev) 973 { 974 struct ibm_struct *ibm, *itmp; 975 976 list_for_each_entry_safe(ibm, itmp, 977 &tpacpi_all_drivers, 978 all_drivers) { 979 if (ibm->resume) 980 (ibm->resume)(); 981 } 982 983 return 0; 984 } 985 #endif 986 987 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 988 tpacpi_suspend_handler, tpacpi_resume_handler); 989 990 static void tpacpi_shutdown_handler(struct platform_device *pdev) 991 { 992 struct ibm_struct *ibm, *itmp; 993 994 list_for_each_entry_safe(ibm, itmp, 995 &tpacpi_all_drivers, 996 all_drivers) { 997 if (ibm->shutdown) 998 (ibm->shutdown)(); 999 } 1000 } 1001 1002 /************************************************************************* 1003 * sysfs support helpers 1004 */ 1005 1006 static int parse_strtoul(const char *buf, 1007 unsigned long max, unsigned long *value) 1008 { 1009 char *endp; 1010 1011 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1012 endp = skip_spaces(endp); 1013 if (*endp || *value > max) 1014 return -EINVAL; 1015 1016 return 0; 1017 } 1018 1019 static void tpacpi_disable_brightness_delay(void) 1020 { 1021 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1022 pr_notice("ACPI backlight control delay disabled\n"); 1023 } 1024 1025 static void printk_deprecated_attribute(const char * const what, 1026 const char * const details) 1027 { 1028 tpacpi_log_usertask("deprecated sysfs attribute"); 1029 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", 1030 what, details); 1031 } 1032 1033 /************************************************************************* 1034 * rfkill and radio control support helpers 1035 */ 1036 1037 /* 1038 * ThinkPad-ACPI firmware handling model: 1039 * 1040 * WLSW (master wireless switch) is event-driven, and is common to all 1041 * firmware-controlled radios. It cannot be controlled, just monitored, 1042 * as expected. It overrides all radio state in firmware 1043 * 1044 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1045 * (TODO: verify how WLSW interacts with the returned radio state). 1046 * 1047 * The only time there are shadow radio state changes, is when 1048 * masked-off hotkeys are used. 1049 */ 1050 1051 /* 1052 * Internal driver API for radio state: 1053 * 1054 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1055 * bool: true means radio blocked (off) 1056 */ 1057 enum tpacpi_rfkill_state { 1058 TPACPI_RFK_RADIO_OFF = 0, 1059 TPACPI_RFK_RADIO_ON 1060 }; 1061 1062 /* rfkill switches */ 1063 enum tpacpi_rfk_id { 1064 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1065 TPACPI_RFK_WWAN_SW_ID, 1066 TPACPI_RFK_UWB_SW_ID, 1067 TPACPI_RFK_SW_MAX 1068 }; 1069 1070 static const char *tpacpi_rfkill_names[] = { 1071 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1072 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1073 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1074 [TPACPI_RFK_SW_MAX] = NULL 1075 }; 1076 1077 /* ThinkPad-ACPI rfkill subdriver */ 1078 struct tpacpi_rfk { 1079 struct rfkill *rfkill; 1080 enum tpacpi_rfk_id id; 1081 const struct tpacpi_rfk_ops *ops; 1082 }; 1083 1084 struct tpacpi_rfk_ops { 1085 /* firmware interface */ 1086 int (*get_status)(void); 1087 int (*set_status)(const enum tpacpi_rfkill_state); 1088 }; 1089 1090 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1091 1092 /* Query FW and update rfkill sw state for a given rfkill switch */ 1093 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1094 { 1095 int status; 1096 1097 if (!tp_rfk) 1098 return -ENODEV; 1099 1100 status = (tp_rfk->ops->get_status)(); 1101 if (status < 0) 1102 return status; 1103 1104 rfkill_set_sw_state(tp_rfk->rfkill, 1105 (status == TPACPI_RFK_RADIO_OFF)); 1106 1107 return status; 1108 } 1109 1110 /* 1111 * Sync the HW-blocking state of all rfkill switches, 1112 * do notice it causes the rfkill core to schedule uevents 1113 */ 1114 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1115 { 1116 unsigned int i; 1117 struct tpacpi_rfk *tp_rfk; 1118 1119 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1120 tp_rfk = tpacpi_rfkill_switches[i]; 1121 if (tp_rfk) { 1122 if (rfkill_set_hw_state(tp_rfk->rfkill, 1123 blocked)) { 1124 /* ignore -- we track sw block */ 1125 } 1126 } 1127 } 1128 } 1129 1130 /* Call to get the WLSW state from the firmware */ 1131 static int hotkey_get_wlsw(void); 1132 1133 /* Call to query WLSW state and update all rfkill switches */ 1134 static bool tpacpi_rfk_check_hwblock_state(void) 1135 { 1136 int res = hotkey_get_wlsw(); 1137 int hw_blocked; 1138 1139 /* When unknown or unsupported, we have to assume it is unblocked */ 1140 if (res < 0) 1141 return false; 1142 1143 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1144 tpacpi_rfk_update_hwblock_state(hw_blocked); 1145 1146 return hw_blocked; 1147 } 1148 1149 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1150 { 1151 struct tpacpi_rfk *tp_rfk = data; 1152 int res; 1153 1154 dbg_printk(TPACPI_DBG_RFKILL, 1155 "request to change radio state to %s\n", 1156 blocked ? "blocked" : "unblocked"); 1157 1158 /* try to set radio state */ 1159 res = (tp_rfk->ops->set_status)(blocked ? 1160 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1161 1162 /* and update the rfkill core with whatever the FW really did */ 1163 tpacpi_rfk_update_swstate(tp_rfk); 1164 1165 return (res < 0) ? res : 0; 1166 } 1167 1168 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1169 .set_block = tpacpi_rfk_hook_set_block, 1170 }; 1171 1172 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1173 const struct tpacpi_rfk_ops *tp_rfkops, 1174 const enum rfkill_type rfktype, 1175 const char *name, 1176 const bool set_default) 1177 { 1178 struct tpacpi_rfk *atp_rfk; 1179 int res; 1180 bool sw_state = false; 1181 bool hw_state; 1182 int sw_status; 1183 1184 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1185 1186 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1187 if (atp_rfk) 1188 atp_rfk->rfkill = rfkill_alloc(name, 1189 &tpacpi_pdev->dev, 1190 rfktype, 1191 &tpacpi_rfk_rfkill_ops, 1192 atp_rfk); 1193 if (!atp_rfk || !atp_rfk->rfkill) { 1194 pr_err("failed to allocate memory for rfkill class\n"); 1195 kfree(atp_rfk); 1196 return -ENOMEM; 1197 } 1198 1199 atp_rfk->id = id; 1200 atp_rfk->ops = tp_rfkops; 1201 1202 sw_status = (tp_rfkops->get_status)(); 1203 if (sw_status < 0) { 1204 pr_err("failed to read initial state for %s, error %d\n", 1205 name, sw_status); 1206 } else { 1207 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1208 if (set_default) { 1209 /* try to keep the initial state, since we ask the 1210 * firmware to preserve it across S5 in NVRAM */ 1211 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1212 } 1213 } 1214 hw_state = tpacpi_rfk_check_hwblock_state(); 1215 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1216 1217 res = rfkill_register(atp_rfk->rfkill); 1218 if (res < 0) { 1219 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1220 rfkill_destroy(atp_rfk->rfkill); 1221 kfree(atp_rfk); 1222 return res; 1223 } 1224 1225 tpacpi_rfkill_switches[id] = atp_rfk; 1226 1227 pr_info("rfkill switch %s: radio is %sblocked\n", 1228 name, (sw_state || hw_state) ? "" : "un"); 1229 return 0; 1230 } 1231 1232 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1233 { 1234 struct tpacpi_rfk *tp_rfk; 1235 1236 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1237 1238 tp_rfk = tpacpi_rfkill_switches[id]; 1239 if (tp_rfk) { 1240 rfkill_unregister(tp_rfk->rfkill); 1241 rfkill_destroy(tp_rfk->rfkill); 1242 tpacpi_rfkill_switches[id] = NULL; 1243 kfree(tp_rfk); 1244 } 1245 } 1246 1247 static void printk_deprecated_rfkill_attribute(const char * const what) 1248 { 1249 printk_deprecated_attribute(what, 1250 "Please switch to generic rfkill before year 2010"); 1251 } 1252 1253 /* sysfs <radio> enable ------------------------------------------------ */ 1254 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1255 struct device_attribute *attr, 1256 char *buf) 1257 { 1258 int status; 1259 1260 printk_deprecated_rfkill_attribute(attr->attr.name); 1261 1262 /* This is in the ABI... */ 1263 if (tpacpi_rfk_check_hwblock_state()) { 1264 status = TPACPI_RFK_RADIO_OFF; 1265 } else { 1266 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1267 if (status < 0) 1268 return status; 1269 } 1270 1271 return sysfs_emit(buf, "%d\n", 1272 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1273 } 1274 1275 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1276 struct device_attribute *attr, 1277 const char *buf, size_t count) 1278 { 1279 unsigned long t; 1280 int res; 1281 1282 printk_deprecated_rfkill_attribute(attr->attr.name); 1283 1284 if (parse_strtoul(buf, 1, &t)) 1285 return -EINVAL; 1286 1287 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1288 1289 /* This is in the ABI... */ 1290 if (tpacpi_rfk_check_hwblock_state() && !!t) 1291 return -EPERM; 1292 1293 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1294 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1295 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1296 1297 return (res < 0) ? res : count; 1298 } 1299 1300 /* procfs -------------------------------------------------------------- */ 1301 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1302 { 1303 if (id >= TPACPI_RFK_SW_MAX) 1304 seq_printf(m, "status:\t\tnot supported\n"); 1305 else { 1306 int status; 1307 1308 /* This is in the ABI... */ 1309 if (tpacpi_rfk_check_hwblock_state()) { 1310 status = TPACPI_RFK_RADIO_OFF; 1311 } else { 1312 status = tpacpi_rfk_update_swstate( 1313 tpacpi_rfkill_switches[id]); 1314 if (status < 0) 1315 return status; 1316 } 1317 1318 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status == TPACPI_RFK_RADIO_ON)); 1319 seq_printf(m, "commands:\tenable, disable\n"); 1320 } 1321 1322 return 0; 1323 } 1324 1325 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1326 { 1327 char *cmd; 1328 int status = -1; 1329 int res = 0; 1330 1331 if (id >= TPACPI_RFK_SW_MAX) 1332 return -ENODEV; 1333 1334 while ((cmd = strsep(&buf, ","))) { 1335 if (strstarts(cmd, "enable")) 1336 status = TPACPI_RFK_RADIO_ON; 1337 else if (strstarts(cmd, "disable")) 1338 status = TPACPI_RFK_RADIO_OFF; 1339 else 1340 return -EINVAL; 1341 } 1342 1343 if (status != -1) { 1344 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1345 str_enable_disable(status == TPACPI_RFK_RADIO_ON), 1346 tpacpi_rfkill_names[id]); 1347 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1348 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1349 } 1350 1351 return res; 1352 } 1353 1354 /************************************************************************* 1355 * thinkpad-acpi driver attributes 1356 */ 1357 1358 /* interface_version --------------------------------------------------- */ 1359 static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1360 { 1361 return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION); 1362 } 1363 static DRIVER_ATTR_RO(interface_version); 1364 1365 /* debug_level --------------------------------------------------------- */ 1366 static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1367 { 1368 return sysfs_emit(buf, "0x%04x\n", dbg_level); 1369 } 1370 1371 static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1372 size_t count) 1373 { 1374 unsigned long t; 1375 1376 if (parse_strtoul(buf, 0xffff, &t)) 1377 return -EINVAL; 1378 1379 dbg_level = t; 1380 1381 return count; 1382 } 1383 static DRIVER_ATTR_RW(debug_level); 1384 1385 /* version ------------------------------------------------------------- */ 1386 static ssize_t version_show(struct device_driver *drv, char *buf) 1387 { 1388 return sysfs_emit(buf, "%s v%s\n", 1389 TPACPI_DESC, TPACPI_VERSION); 1390 } 1391 static DRIVER_ATTR_RO(version); 1392 1393 /* --------------------------------------------------------------------- */ 1394 1395 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1396 1397 /* wlsw_emulstate ------------------------------------------------------ */ 1398 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1399 { 1400 return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate); 1401 } 1402 1403 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1404 size_t count) 1405 { 1406 unsigned long t; 1407 1408 if (parse_strtoul(buf, 1, &t)) 1409 return -EINVAL; 1410 1411 if (tpacpi_wlsw_emulstate != !!t) { 1412 tpacpi_wlsw_emulstate = !!t; 1413 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1414 } 1415 1416 return count; 1417 } 1418 static DRIVER_ATTR_RW(wlsw_emulstate); 1419 1420 /* bluetooth_emulstate ------------------------------------------------- */ 1421 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1422 { 1423 return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate); 1424 } 1425 1426 static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1427 const char *buf, size_t count) 1428 { 1429 unsigned long t; 1430 1431 if (parse_strtoul(buf, 1, &t)) 1432 return -EINVAL; 1433 1434 tpacpi_bluetooth_emulstate = !!t; 1435 1436 return count; 1437 } 1438 static DRIVER_ATTR_RW(bluetooth_emulstate); 1439 1440 /* wwan_emulstate ------------------------------------------------- */ 1441 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1442 { 1443 return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate); 1444 } 1445 1446 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1447 size_t count) 1448 { 1449 unsigned long t; 1450 1451 if (parse_strtoul(buf, 1, &t)) 1452 return -EINVAL; 1453 1454 tpacpi_wwan_emulstate = !!t; 1455 1456 return count; 1457 } 1458 static DRIVER_ATTR_RW(wwan_emulstate); 1459 1460 /* uwb_emulstate ------------------------------------------------- */ 1461 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1462 { 1463 return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate); 1464 } 1465 1466 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1467 size_t count) 1468 { 1469 unsigned long t; 1470 1471 if (parse_strtoul(buf, 1, &t)) 1472 return -EINVAL; 1473 1474 tpacpi_uwb_emulstate = !!t; 1475 1476 return count; 1477 } 1478 static DRIVER_ATTR_RW(uwb_emulstate); 1479 #endif 1480 1481 /************************************************************************* 1482 * Firmware Data 1483 */ 1484 1485 /* 1486 * Table of recommended minimum BIOS versions 1487 * 1488 * Reasons for listing: 1489 * 1. Stable BIOS, listed because the unknown amount of 1490 * bugs and bad ACPI behaviour on older versions 1491 * 1492 * 2. BIOS or EC fw with known bugs that trigger on Linux 1493 * 1494 * 3. BIOS with known reduced functionality in older versions 1495 * 1496 * We recommend the latest BIOS and EC version. 1497 * We only support the latest BIOS and EC fw version as a rule. 1498 * 1499 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1500 * Information from users in ThinkWiki 1501 * 1502 * WARNING: we use this table also to detect that the machine is 1503 * a ThinkPad in some cases, so don't remove entries lightly. 1504 */ 1505 1506 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1507 { .vendor = (__v), \ 1508 .bios = TPID(__id1, __id2), \ 1509 .ec = TPACPI_MATCH_ANY, \ 1510 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ 1511 | TPVER(__bv1, __bv2) } 1512 1513 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1514 __eid, __ev1, __ev2) \ 1515 { .vendor = (__v), \ 1516 .bios = TPID(__bid1, __bid2), \ 1517 .ec = __eid, \ 1518 .quirks = TPVER(__ev1, __ev2) << 16 \ 1519 | TPVER(__bv1, __bv2) } 1520 1521 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1522 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1523 1524 /* Outdated IBM BIOSes often lack the EC id string */ 1525 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1526 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1527 __bv1, __bv2, TPID(__id1, __id2), \ 1528 __ev1, __ev2), \ 1529 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1530 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1531 __ev1, __ev2) 1532 1533 /* Outdated IBM BIOSes often lack the EC id string */ 1534 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1535 __eid1, __eid2, __ev1, __ev2) \ 1536 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1537 __bv1, __bv2, TPID(__eid1, __eid2), \ 1538 __ev1, __ev2), \ 1539 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1540 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1541 __ev1, __ev2) 1542 1543 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1544 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1545 1546 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1547 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1548 __bv1, __bv2, TPID(__id1, __id2), \ 1549 __ev1, __ev2) 1550 1551 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1552 __eid1, __eid2, __ev1, __ev2) \ 1553 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1554 __bv1, __bv2, TPID(__eid1, __eid2), \ 1555 __ev1, __ev2) 1556 1557 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1558 /* Numeric models ------------------ */ 1559 /* FW MODEL BIOS VERS */ 1560 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1561 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1562 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1563 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1564 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1565 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1566 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1567 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1568 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1569 1570 /* A-series ------------------------- */ 1571 /* FW MODEL BIOS VERS EC VERS */ 1572 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1573 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1574 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1575 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1576 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1577 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1578 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1579 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1580 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1581 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1582 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1583 1584 /* G-series ------------------------- */ 1585 /* FW MODEL BIOS VERS */ 1586 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1587 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1588 1589 /* R-series, T-series --------------- */ 1590 /* FW MODEL BIOS VERS EC VERS */ 1591 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1592 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1593 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1594 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1595 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1596 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1597 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1598 T40/p, T41/p, T42/p (1) */ 1599 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1600 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1601 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1602 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1603 1604 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1605 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1606 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1607 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1608 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1609 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1610 1611 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1612 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1613 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1614 1615 /* BIOS FW BIOS VERS EC FW EC VERS */ 1616 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1617 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1618 1619 /* X-series ------------------------- */ 1620 /* FW MODEL BIOS VERS EC VERS */ 1621 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1622 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1623 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1624 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1625 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1626 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1627 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1628 1629 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1630 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1631 1632 /* (0) - older versions lack DMI EC fw string and functionality */ 1633 /* (1) - older versions known to lack functionality */ 1634 }; 1635 1636 #undef TPV_QL1 1637 #undef TPV_QL0 1638 #undef TPV_QI2 1639 #undef TPV_QI1 1640 #undef TPV_QI0 1641 #undef TPV_Q_X 1642 #undef TPV_Q 1643 1644 static void __init tpacpi_check_outdated_fw(void) 1645 { 1646 unsigned long fwvers; 1647 u16 ec_version, bios_version; 1648 1649 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1650 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1651 1652 if (!fwvers) 1653 return; 1654 1655 bios_version = fwvers & 0xffffU; 1656 ec_version = (fwvers >> 16) & 0xffffU; 1657 1658 /* note that unknown versions are set to 0x0000 and we use that */ 1659 if ((bios_version > thinkpad_id.bios_release) || 1660 (ec_version > thinkpad_id.ec_release && 1661 ec_version != TPACPI_MATCH_ANY_VERSION)) { 1662 /* 1663 * The changelogs would let us track down the exact 1664 * reason, but it is just too much of a pain to track 1665 * it. We only list BIOSes that are either really 1666 * broken, or really stable to begin with, so it is 1667 * best if the user upgrades the firmware anyway. 1668 */ 1669 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1670 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1671 } 1672 } 1673 1674 static bool __init tpacpi_is_fw_known(void) 1675 { 1676 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1677 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1678 } 1679 1680 /**************************************************************************** 1681 **************************************************************************** 1682 * 1683 * Subdrivers 1684 * 1685 **************************************************************************** 1686 ****************************************************************************/ 1687 1688 /************************************************************************* 1689 * thinkpad-acpi metadata subdriver 1690 */ 1691 1692 static int thinkpad_acpi_driver_read(struct seq_file *m) 1693 { 1694 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1695 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1696 return 0; 1697 } 1698 1699 static struct ibm_struct thinkpad_acpi_driver_data = { 1700 .name = "driver", 1701 .read = thinkpad_acpi_driver_read, 1702 }; 1703 1704 /************************************************************************* 1705 * Hotkey subdriver 1706 */ 1707 1708 /* 1709 * ThinkPad firmware event model 1710 * 1711 * The ThinkPad firmware has two main event interfaces: normal ACPI 1712 * notifications (which follow the ACPI standard), and a private event 1713 * interface. 1714 * 1715 * The private event interface also issues events for the hotkeys. As 1716 * the driver gained features, the event handling code ended up being 1717 * built around the hotkey subdriver. This will need to be refactored 1718 * to a more formal event API eventually. 1719 * 1720 * Some "hotkeys" are actually supposed to be used as event reports, 1721 * such as "brightness has changed", "volume has changed", depending on 1722 * the ThinkPad model and how the firmware is operating. 1723 * 1724 * Unlike other classes, hotkey-class events have mask/unmask control on 1725 * non-ancient firmware. However, how it behaves changes a lot with the 1726 * firmware model and version. 1727 */ 1728 1729 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1730 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1731 TP_ACPI_HOTKEYSCAN_FNF2, 1732 TP_ACPI_HOTKEYSCAN_FNF3, 1733 TP_ACPI_HOTKEYSCAN_FNF4, 1734 TP_ACPI_HOTKEYSCAN_FNF5, 1735 TP_ACPI_HOTKEYSCAN_FNF6, 1736 TP_ACPI_HOTKEYSCAN_FNF7, 1737 TP_ACPI_HOTKEYSCAN_FNF8, 1738 TP_ACPI_HOTKEYSCAN_FNF9, 1739 TP_ACPI_HOTKEYSCAN_FNF10, 1740 TP_ACPI_HOTKEYSCAN_FNF11, 1741 TP_ACPI_HOTKEYSCAN_FNF12, 1742 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1743 TP_ACPI_HOTKEYSCAN_FNINSERT, 1744 TP_ACPI_HOTKEYSCAN_FNDELETE, 1745 TP_ACPI_HOTKEYSCAN_FNHOME, 1746 TP_ACPI_HOTKEYSCAN_FNEND, 1747 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1748 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1749 TP_ACPI_HOTKEYSCAN_FNSPACE, 1750 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1751 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1752 TP_ACPI_HOTKEYSCAN_MUTE, 1753 TP_ACPI_HOTKEYSCAN_THINKPAD, 1754 TP_ACPI_HOTKEYSCAN_UNK1, 1755 TP_ACPI_HOTKEYSCAN_UNK2, 1756 TP_ACPI_HOTKEYSCAN_UNK3, 1757 TP_ACPI_HOTKEYSCAN_UNK4, 1758 TP_ACPI_HOTKEYSCAN_UNK5, 1759 TP_ACPI_HOTKEYSCAN_UNK6, 1760 TP_ACPI_HOTKEYSCAN_UNK7, 1761 TP_ACPI_HOTKEYSCAN_UNK8, 1762 1763 /* Adaptive keyboard keycodes */ 1764 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1765 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1766 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1767 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1768 TP_ACPI_HOTKEYSCAN_CLOUD, 1769 TP_ACPI_HOTKEYSCAN_UNK9, 1770 TP_ACPI_HOTKEYSCAN_VOICE, 1771 TP_ACPI_HOTKEYSCAN_UNK10, 1772 TP_ACPI_HOTKEYSCAN_GESTURES, 1773 TP_ACPI_HOTKEYSCAN_UNK11, 1774 TP_ACPI_HOTKEYSCAN_UNK12, 1775 TP_ACPI_HOTKEYSCAN_UNK13, 1776 TP_ACPI_HOTKEYSCAN_CONFIG, 1777 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1778 TP_ACPI_HOTKEYSCAN_RELOAD, 1779 TP_ACPI_HOTKEYSCAN_BACK, 1780 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1781 TP_ACPI_HOTKEYSCAN_MIC_UP, 1782 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1783 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1784 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1785 1786 /* Lenovo extended keymap, starting at 0x1300 */ 1787 TP_ACPI_HOTKEYSCAN_EXTENDED_START, 1788 /* first new observed key (star, favorites) is 0x1311 */ 1789 TP_ACPI_HOTKEYSCAN_STAR = 69, 1790 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1791 TP_ACPI_HOTKEYSCAN_CALCULATOR, 1792 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1793 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1794 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ 1795 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, 1796 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, 1797 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, 1798 1799 /* Hotkey keymap size */ 1800 TPACPI_HOTKEY_MAP_LEN 1801 }; 1802 1803 enum { /* Keys/events available through NVRAM polling */ 1804 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1805 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1806 }; 1807 1808 enum { /* Positions of some of the keys in hotkey masks */ 1809 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1810 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1811 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1812 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1813 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1814 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1815 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1816 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1817 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1818 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1819 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1820 }; 1821 1822 enum { /* NVRAM to ACPI HKEY group map */ 1823 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1824 TP_ACPI_HKEY_ZOOM_MASK | 1825 TP_ACPI_HKEY_DISPSWTCH_MASK | 1826 TP_ACPI_HKEY_HIBERNATE_MASK, 1827 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1828 TP_ACPI_HKEY_BRGHTDWN_MASK, 1829 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1830 TP_ACPI_HKEY_VOLDWN_MASK | 1831 TP_ACPI_HKEY_MUTE_MASK, 1832 }; 1833 1834 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1835 struct tp_nvram_state { 1836 u16 thinkpad_toggle:1; 1837 u16 zoom_toggle:1; 1838 u16 display_toggle:1; 1839 u16 thinklight_toggle:1; 1840 u16 hibernate_toggle:1; 1841 u16 displayexp_toggle:1; 1842 u16 display_state:1; 1843 u16 brightness_toggle:1; 1844 u16 volume_toggle:1; 1845 u16 mute:1; 1846 1847 u8 brightness_level; 1848 u8 volume_level; 1849 }; 1850 1851 /* kthread for the hotkey poller */ 1852 static struct task_struct *tpacpi_hotkey_task; 1853 1854 /* 1855 * Acquire mutex to write poller control variables as an 1856 * atomic block. 1857 * 1858 * Increment hotkey_config_change when changing them if you 1859 * want the kthread to forget old state. 1860 * 1861 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1862 */ 1863 static struct mutex hotkey_thread_data_mutex; 1864 static unsigned int hotkey_config_change; 1865 1866 /* 1867 * hotkey poller control variables 1868 * 1869 * Must be atomic or readers will also need to acquire mutex 1870 * 1871 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1872 * should be used only when the changes need to be taken as 1873 * a block, OR when one needs to force the kthread to forget 1874 * old state. 1875 */ 1876 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 1877 static unsigned int hotkey_poll_freq = 10; /* Hz */ 1878 1879 #define HOTKEY_CONFIG_CRITICAL_START \ 1880 do { \ 1881 mutex_lock(&hotkey_thread_data_mutex); \ 1882 hotkey_config_change++; \ 1883 } while (0); 1884 #define HOTKEY_CONFIG_CRITICAL_END \ 1885 mutex_unlock(&hotkey_thread_data_mutex); 1886 1887 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1888 1889 #define hotkey_source_mask 0U 1890 #define HOTKEY_CONFIG_CRITICAL_START 1891 #define HOTKEY_CONFIG_CRITICAL_END 1892 1893 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1894 1895 static struct mutex hotkey_mutex; 1896 1897 static enum { /* Reasons for waking up */ 1898 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 1899 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 1900 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 1901 } hotkey_wakeup_reason; 1902 1903 static int hotkey_autosleep_ack; 1904 1905 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 1906 static u32 hotkey_all_mask; /* all events supported in fw */ 1907 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 1908 static u32 hotkey_reserved_mask; /* events better left disabled */ 1909 static u32 hotkey_driver_mask; /* events needed by the driver */ 1910 static u32 hotkey_user_mask; /* events visible to userspace */ 1911 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 1912 1913 static u16 *hotkey_keycode_map; 1914 1915 static void tpacpi_driver_event(const unsigned int hkey_event); 1916 static void hotkey_driver_event(const unsigned int scancode); 1917 static void hotkey_poll_setup(const bool may_warn); 1918 1919 /* HKEY.MHKG() return bits */ 1920 #define TP_HOTKEY_TABLET_MASK (1 << 3) 1921 enum { 1922 TP_ACPI_MULTI_MODE_INVALID = 0, 1923 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 1924 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 1925 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 1926 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 1927 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 1928 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 1929 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 1930 }; 1931 1932 enum { 1933 /* The following modes are considered tablet mode for the purpose of 1934 * reporting the status to userspace. i.e. in all these modes it makes 1935 * sense to disable the laptop input devices such as touchpad and 1936 * keyboard. 1937 */ 1938 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 1939 TP_ACPI_MULTI_MODE_STAND | 1940 TP_ACPI_MULTI_MODE_TENT | 1941 TP_ACPI_MULTI_MODE_STAND_TENT, 1942 }; 1943 1944 static int hotkey_get_wlsw(void) 1945 { 1946 int status; 1947 1948 if (!tp_features.hotkey_wlsw) 1949 return -ENODEV; 1950 1951 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1952 if (dbg_wlswemul) 1953 return (tpacpi_wlsw_emulstate) ? 1954 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1955 #endif 1956 1957 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 1958 return -EIO; 1959 1960 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1961 } 1962 1963 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 1964 { 1965 int type = (s >> 16) & 0xffff; 1966 int value = s & 0xffff; 1967 int mode = TP_ACPI_MULTI_MODE_INVALID; 1968 int valid_modes = 0; 1969 1970 if (has_tablet_mode) 1971 *has_tablet_mode = 0; 1972 1973 switch (type) { 1974 case 1: 1975 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1976 TP_ACPI_MULTI_MODE_TABLET | 1977 TP_ACPI_MULTI_MODE_STAND_TENT; 1978 break; 1979 case 2: 1980 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1981 TP_ACPI_MULTI_MODE_FLAT | 1982 TP_ACPI_MULTI_MODE_TABLET | 1983 TP_ACPI_MULTI_MODE_STAND | 1984 TP_ACPI_MULTI_MODE_TENT; 1985 break; 1986 case 3: 1987 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1988 TP_ACPI_MULTI_MODE_FLAT; 1989 break; 1990 case 4: 1991 case 5: 1992 /* In mode 4, FLAT is not specified as a valid mode. However, 1993 * it can be seen at least on the X1 Yoga 2nd Generation. 1994 */ 1995 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1996 TP_ACPI_MULTI_MODE_FLAT | 1997 TP_ACPI_MULTI_MODE_TABLET | 1998 TP_ACPI_MULTI_MODE_STAND | 1999 TP_ACPI_MULTI_MODE_TENT; 2000 break; 2001 default: 2002 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2003 type, value, TPACPI_MAIL); 2004 return 0; 2005 } 2006 2007 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2008 *has_tablet_mode = 1; 2009 2010 switch (value) { 2011 case 1: 2012 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2013 break; 2014 case 2: 2015 mode = TP_ACPI_MULTI_MODE_FLAT; 2016 break; 2017 case 3: 2018 mode = TP_ACPI_MULTI_MODE_TABLET; 2019 break; 2020 case 4: 2021 if (type == 1) 2022 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2023 else 2024 mode = TP_ACPI_MULTI_MODE_STAND; 2025 break; 2026 case 5: 2027 mode = TP_ACPI_MULTI_MODE_TENT; 2028 break; 2029 default: 2030 if (type == 5 && value == 0xffff) { 2031 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2032 return 0; 2033 } 2034 } 2035 2036 if (!(mode & valid_modes)) { 2037 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2038 value, type, TPACPI_MAIL); 2039 return 0; 2040 } 2041 2042 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2043 } 2044 2045 static int hotkey_get_tablet_mode(int *status) 2046 { 2047 int s; 2048 2049 switch (tp_features.hotkey_tablet) { 2050 case TP_HOTKEY_TABLET_USES_MHKG: 2051 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2052 return -EIO; 2053 2054 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2055 break; 2056 case TP_HOTKEY_TABLET_USES_GMMS: 2057 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2058 return -EIO; 2059 2060 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2061 break; 2062 default: 2063 break; 2064 } 2065 2066 return 0; 2067 } 2068 2069 /* 2070 * Reads current event mask from firmware, and updates 2071 * hotkey_acpi_mask accordingly. Also resets any bits 2072 * from hotkey_user_mask that are unavailable to be 2073 * delivered (shadow requirement of the userspace ABI). 2074 * 2075 * Call with hotkey_mutex held 2076 */ 2077 static int hotkey_mask_get(void) 2078 { 2079 if (tp_features.hotkey_mask) { 2080 u32 m = 0; 2081 2082 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2083 return -EIO; 2084 2085 hotkey_acpi_mask = m; 2086 } else { 2087 /* no mask support doesn't mean no event support... */ 2088 hotkey_acpi_mask = hotkey_all_mask; 2089 } 2090 2091 /* sync userspace-visible mask */ 2092 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2093 2094 return 0; 2095 } 2096 2097 static void hotkey_mask_warn_incomplete_mask(void) 2098 { 2099 /* log only what the user can fix... */ 2100 const u32 wantedmask = hotkey_driver_mask & 2101 ~(hotkey_acpi_mask | hotkey_source_mask) & 2102 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2103 2104 if (wantedmask) 2105 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2106 } 2107 2108 /* 2109 * Set the firmware mask when supported 2110 * 2111 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2112 * 2113 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2114 * 2115 * Call with hotkey_mutex held 2116 */ 2117 static int hotkey_mask_set(u32 mask) 2118 { 2119 int i; 2120 int rc = 0; 2121 2122 const u32 fwmask = mask & ~hotkey_source_mask; 2123 2124 if (tp_features.hotkey_mask) { 2125 for (i = 0; i < 32; i++) { 2126 if (!acpi_evalf(hkey_handle, 2127 NULL, "MHKM", "vdd", i + 1, 2128 !!(mask & (1 << i)))) { 2129 rc = -EIO; 2130 break; 2131 } 2132 } 2133 } 2134 2135 /* 2136 * We *must* make an inconditional call to hotkey_mask_get to 2137 * refresh hotkey_acpi_mask and update hotkey_user_mask 2138 * 2139 * Take the opportunity to also log when we cannot _enable_ 2140 * a given event. 2141 */ 2142 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2143 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2144 fwmask, hotkey_acpi_mask); 2145 } 2146 2147 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2148 hotkey_mask_warn_incomplete_mask(); 2149 2150 return rc; 2151 } 2152 2153 /* 2154 * Sets hotkey_user_mask and tries to set the firmware mask 2155 * 2156 * Call with hotkey_mutex held 2157 */ 2158 static int hotkey_user_mask_set(const u32 mask) 2159 { 2160 int rc; 2161 2162 /* Give people a chance to notice they are doing something that 2163 * is bound to go boom on their users sooner or later */ 2164 if (!tp_warned.hotkey_mask_ff && 2165 (mask == 0xffff || mask == 0xffffff || 2166 mask == 0xffffffff)) { 2167 tp_warned.hotkey_mask_ff = 1; 2168 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2169 mask); 2170 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2171 } 2172 2173 /* Try to enable what the user asked for, plus whatever we need. 2174 * this syncs everything but won't enable bits in hotkey_user_mask */ 2175 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2176 2177 /* Enable the available bits in hotkey_user_mask */ 2178 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2179 2180 return rc; 2181 } 2182 2183 /* 2184 * Sets the driver hotkey mask. 2185 * 2186 * Can be called even if the hotkey subdriver is inactive 2187 */ 2188 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2189 { 2190 int rc; 2191 2192 /* Do the right thing if hotkey_init has not been called yet */ 2193 if (!tp_features.hotkey) { 2194 hotkey_driver_mask = mask; 2195 return 0; 2196 } 2197 2198 mutex_lock(&hotkey_mutex); 2199 2200 HOTKEY_CONFIG_CRITICAL_START 2201 hotkey_driver_mask = mask; 2202 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2203 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2204 #endif 2205 HOTKEY_CONFIG_CRITICAL_END 2206 2207 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2208 ~hotkey_source_mask); 2209 hotkey_poll_setup(true); 2210 2211 mutex_unlock(&hotkey_mutex); 2212 2213 return rc; 2214 } 2215 2216 static int hotkey_status_get(int *status) 2217 { 2218 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2219 return -EIO; 2220 2221 return 0; 2222 } 2223 2224 static int hotkey_status_set(bool enable) 2225 { 2226 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2227 return -EIO; 2228 2229 return 0; 2230 } 2231 2232 static void tpacpi_input_send_tabletsw(void) 2233 { 2234 int state; 2235 2236 if (tp_features.hotkey_tablet && 2237 !hotkey_get_tablet_mode(&state)) { 2238 mutex_lock(&tpacpi_inputdev_send_mutex); 2239 2240 input_report_switch(tpacpi_inputdev, 2241 SW_TABLET_MODE, !!state); 2242 input_sync(tpacpi_inputdev); 2243 2244 mutex_unlock(&tpacpi_inputdev_send_mutex); 2245 } 2246 } 2247 2248 /* Do NOT call without validating scancode first */ 2249 static void tpacpi_input_send_key(const unsigned int scancode) 2250 { 2251 const unsigned int keycode = hotkey_keycode_map[scancode]; 2252 2253 if (keycode != KEY_RESERVED) { 2254 mutex_lock(&tpacpi_inputdev_send_mutex); 2255 2256 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2257 input_report_key(tpacpi_inputdev, keycode, 1); 2258 input_sync(tpacpi_inputdev); 2259 2260 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2261 input_report_key(tpacpi_inputdev, keycode, 0); 2262 input_sync(tpacpi_inputdev); 2263 2264 mutex_unlock(&tpacpi_inputdev_send_mutex); 2265 } 2266 } 2267 2268 /* Do NOT call without validating scancode first */ 2269 static void tpacpi_input_send_key_masked(const unsigned int scancode) 2270 { 2271 hotkey_driver_event(scancode); 2272 if (hotkey_user_mask & (1 << scancode)) 2273 tpacpi_input_send_key(scancode); 2274 } 2275 2276 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2277 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2278 2279 /* Do NOT call without validating scancode first */ 2280 static void tpacpi_hotkey_send_key(unsigned int scancode) 2281 { 2282 tpacpi_input_send_key_masked(scancode); 2283 } 2284 2285 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2286 { 2287 u8 d; 2288 2289 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2290 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2291 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2292 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2293 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2294 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2295 } 2296 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2297 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2298 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2299 } 2300 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2301 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2302 n->displayexp_toggle = 2303 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2304 } 2305 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2306 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2307 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2308 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2309 n->brightness_toggle = 2310 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2311 } 2312 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2313 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2314 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2315 >> TP_NVRAM_POS_LEVEL_VOLUME; 2316 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2317 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2318 } 2319 } 2320 2321 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2322 do { \ 2323 if ((event_mask & (1 << __scancode)) && \ 2324 oldn->__member != newn->__member) \ 2325 tpacpi_hotkey_send_key(__scancode); \ 2326 } while (0) 2327 2328 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2329 do { \ 2330 if (event_mask & (1 << __scancode)) \ 2331 tpacpi_hotkey_send_key(__scancode); \ 2332 } while (0) 2333 2334 static void issue_volchange(const unsigned int oldvol, 2335 const unsigned int newvol, 2336 const u32 event_mask) 2337 { 2338 unsigned int i = oldvol; 2339 2340 while (i > newvol) { 2341 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2342 i--; 2343 } 2344 while (i < newvol) { 2345 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2346 i++; 2347 } 2348 } 2349 2350 static void issue_brightnesschange(const unsigned int oldbrt, 2351 const unsigned int newbrt, 2352 const u32 event_mask) 2353 { 2354 unsigned int i = oldbrt; 2355 2356 while (i > newbrt) { 2357 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2358 i--; 2359 } 2360 while (i < newbrt) { 2361 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2362 i++; 2363 } 2364 } 2365 2366 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2367 struct tp_nvram_state *newn, 2368 const u32 event_mask) 2369 { 2370 2371 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2372 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2373 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2374 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2375 2376 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2377 2378 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2379 2380 /* 2381 * Handle volume 2382 * 2383 * This code is supposed to duplicate the IBM firmware behaviour: 2384 * - Pressing MUTE issues mute hotkey message, even when already mute 2385 * - Pressing Volume up/down issues volume up/down hotkey messages, 2386 * even when already at maximum or minimum volume 2387 * - The act of unmuting issues volume up/down notification, 2388 * depending which key was used to unmute 2389 * 2390 * We are constrained to what the NVRAM can tell us, which is not much 2391 * and certainly not enough if more than one volume hotkey was pressed 2392 * since the last poll cycle. 2393 * 2394 * Just to make our life interesting, some newer Lenovo ThinkPads have 2395 * bugs in the BIOS and may fail to update volume_toggle properly. 2396 */ 2397 if (newn->mute) { 2398 /* muted */ 2399 if (!oldn->mute || 2400 oldn->volume_toggle != newn->volume_toggle || 2401 oldn->volume_level != newn->volume_level) { 2402 /* recently muted, or repeated mute keypress, or 2403 * multiple presses ending in mute */ 2404 issue_volchange(oldn->volume_level, newn->volume_level, 2405 event_mask); 2406 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2407 } 2408 } else { 2409 /* unmute */ 2410 if (oldn->mute) { 2411 /* recently unmuted, issue 'unmute' keypress */ 2412 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2413 } 2414 if (oldn->volume_level != newn->volume_level) { 2415 issue_volchange(oldn->volume_level, newn->volume_level, 2416 event_mask); 2417 } else if (oldn->volume_toggle != newn->volume_toggle) { 2418 /* repeated vol up/down keypress at end of scale ? */ 2419 if (newn->volume_level == 0) 2420 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2421 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2422 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2423 } 2424 } 2425 2426 /* handle brightness */ 2427 if (oldn->brightness_level != newn->brightness_level) { 2428 issue_brightnesschange(oldn->brightness_level, 2429 newn->brightness_level, event_mask); 2430 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2431 /* repeated key presses that didn't change state */ 2432 if (newn->brightness_level == 0) 2433 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2434 else if (newn->brightness_level >= bright_maxlvl 2435 && !tp_features.bright_unkfw) 2436 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2437 } 2438 2439 #undef TPACPI_COMPARE_KEY 2440 #undef TPACPI_MAY_SEND_KEY 2441 } 2442 2443 /* 2444 * Polling driver 2445 * 2446 * We track all events in hotkey_source_mask all the time, since 2447 * most of them are edge-based. We only issue those requested by 2448 * hotkey_user_mask or hotkey_driver_mask, though. 2449 */ 2450 static int hotkey_kthread(void *data) 2451 { 2452 struct tp_nvram_state s[2] = { 0 }; 2453 u32 poll_mask, event_mask; 2454 unsigned int si, so; 2455 unsigned long t; 2456 unsigned int change_detector; 2457 unsigned int poll_freq; 2458 bool was_frozen; 2459 2460 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2461 goto exit; 2462 2463 set_freezable(); 2464 2465 so = 0; 2466 si = 1; 2467 t = 0; 2468 2469 /* Initial state for compares */ 2470 mutex_lock(&hotkey_thread_data_mutex); 2471 change_detector = hotkey_config_change; 2472 poll_mask = hotkey_source_mask; 2473 event_mask = hotkey_source_mask & 2474 (hotkey_driver_mask | hotkey_user_mask); 2475 poll_freq = hotkey_poll_freq; 2476 mutex_unlock(&hotkey_thread_data_mutex); 2477 hotkey_read_nvram(&s[so], poll_mask); 2478 2479 while (!kthread_should_stop()) { 2480 if (t == 0) { 2481 if (likely(poll_freq)) 2482 t = 1000/poll_freq; 2483 else 2484 t = 100; /* should never happen... */ 2485 } 2486 t = msleep_interruptible(t); 2487 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2488 break; 2489 2490 if (t > 0 && !was_frozen) 2491 continue; 2492 2493 mutex_lock(&hotkey_thread_data_mutex); 2494 if (was_frozen || hotkey_config_change != change_detector) { 2495 /* forget old state on thaw or config change */ 2496 si = so; 2497 t = 0; 2498 change_detector = hotkey_config_change; 2499 } 2500 poll_mask = hotkey_source_mask; 2501 event_mask = hotkey_source_mask & 2502 (hotkey_driver_mask | hotkey_user_mask); 2503 poll_freq = hotkey_poll_freq; 2504 mutex_unlock(&hotkey_thread_data_mutex); 2505 2506 if (likely(poll_mask)) { 2507 hotkey_read_nvram(&s[si], poll_mask); 2508 if (likely(si != so)) { 2509 hotkey_compare_and_issue_event(&s[so], &s[si], 2510 event_mask); 2511 } 2512 } 2513 2514 so = si; 2515 si ^= 1; 2516 } 2517 2518 exit: 2519 return 0; 2520 } 2521 2522 /* call with hotkey_mutex held */ 2523 static void hotkey_poll_stop_sync(void) 2524 { 2525 if (tpacpi_hotkey_task) { 2526 kthread_stop(tpacpi_hotkey_task); 2527 tpacpi_hotkey_task = NULL; 2528 } 2529 } 2530 2531 /* call with hotkey_mutex held */ 2532 static void hotkey_poll_setup(const bool may_warn) 2533 { 2534 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2535 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2536 2537 if (hotkey_poll_freq > 0 && 2538 (poll_driver_mask || 2539 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2540 if (!tpacpi_hotkey_task) { 2541 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2542 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2543 if (IS_ERR(tpacpi_hotkey_task)) { 2544 tpacpi_hotkey_task = NULL; 2545 pr_err("could not create kernel thread for hotkey polling\n"); 2546 } 2547 } 2548 } else { 2549 hotkey_poll_stop_sync(); 2550 if (may_warn && (poll_driver_mask || poll_user_mask) && 2551 hotkey_poll_freq == 0) { 2552 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2553 poll_user_mask, poll_driver_mask); 2554 } 2555 } 2556 } 2557 2558 static void hotkey_poll_setup_safe(const bool may_warn) 2559 { 2560 mutex_lock(&hotkey_mutex); 2561 hotkey_poll_setup(may_warn); 2562 mutex_unlock(&hotkey_mutex); 2563 } 2564 2565 /* call with hotkey_mutex held */ 2566 static void hotkey_poll_set_freq(unsigned int freq) 2567 { 2568 if (!freq) 2569 hotkey_poll_stop_sync(); 2570 2571 hotkey_poll_freq = freq; 2572 } 2573 2574 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2575 2576 static void hotkey_poll_setup(const bool __unused) 2577 { 2578 } 2579 2580 static void hotkey_poll_setup_safe(const bool __unused) 2581 { 2582 } 2583 2584 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2585 2586 static int hotkey_inputdev_open(struct input_dev *dev) 2587 { 2588 switch (tpacpi_lifecycle) { 2589 case TPACPI_LIFE_INIT: 2590 case TPACPI_LIFE_RUNNING: 2591 hotkey_poll_setup_safe(false); 2592 return 0; 2593 case TPACPI_LIFE_EXITING: 2594 return -EBUSY; 2595 } 2596 2597 /* Should only happen if tpacpi_lifecycle is corrupt */ 2598 BUG(); 2599 return -EBUSY; 2600 } 2601 2602 static void hotkey_inputdev_close(struct input_dev *dev) 2603 { 2604 /* disable hotkey polling when possible */ 2605 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2606 !(hotkey_source_mask & hotkey_driver_mask)) 2607 hotkey_poll_setup_safe(false); 2608 } 2609 2610 /* sysfs hotkey enable ------------------------------------------------- */ 2611 static ssize_t hotkey_enable_show(struct device *dev, 2612 struct device_attribute *attr, 2613 char *buf) 2614 { 2615 int res, status; 2616 2617 printk_deprecated_attribute("hotkey_enable", 2618 "Hotkey reporting is always enabled"); 2619 2620 res = hotkey_status_get(&status); 2621 if (res) 2622 return res; 2623 2624 return sysfs_emit(buf, "%d\n", status); 2625 } 2626 2627 static ssize_t hotkey_enable_store(struct device *dev, 2628 struct device_attribute *attr, 2629 const char *buf, size_t count) 2630 { 2631 unsigned long t; 2632 2633 printk_deprecated_attribute("hotkey_enable", 2634 "Hotkeys can be disabled through hotkey_mask"); 2635 2636 if (parse_strtoul(buf, 1, &t)) 2637 return -EINVAL; 2638 2639 if (t == 0) 2640 return -EPERM; 2641 2642 return count; 2643 } 2644 2645 static DEVICE_ATTR_RW(hotkey_enable); 2646 2647 /* sysfs hotkey mask --------------------------------------------------- */ 2648 static ssize_t hotkey_mask_show(struct device *dev, 2649 struct device_attribute *attr, 2650 char *buf) 2651 { 2652 return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask); 2653 } 2654 2655 static ssize_t hotkey_mask_store(struct device *dev, 2656 struct device_attribute *attr, 2657 const char *buf, size_t count) 2658 { 2659 unsigned long t; 2660 int res; 2661 2662 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2663 return -EINVAL; 2664 2665 if (mutex_lock_killable(&hotkey_mutex)) 2666 return -ERESTARTSYS; 2667 2668 res = hotkey_user_mask_set(t); 2669 2670 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2671 hotkey_poll_setup(true); 2672 #endif 2673 2674 mutex_unlock(&hotkey_mutex); 2675 2676 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2677 2678 return (res) ? res : count; 2679 } 2680 2681 static DEVICE_ATTR_RW(hotkey_mask); 2682 2683 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2684 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2685 struct device_attribute *attr, 2686 char *buf) 2687 { 2688 return sprintf(buf, "0\n"); 2689 } 2690 2691 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2692 2693 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2694 static ssize_t hotkey_bios_mask_show(struct device *dev, 2695 struct device_attribute *attr, 2696 char *buf) 2697 { 2698 printk_deprecated_attribute("hotkey_bios_mask", 2699 "This attribute is useless."); 2700 return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask); 2701 } 2702 2703 static DEVICE_ATTR_RO(hotkey_bios_mask); 2704 2705 /* sysfs hotkey all_mask ----------------------------------------------- */ 2706 static ssize_t hotkey_all_mask_show(struct device *dev, 2707 struct device_attribute *attr, 2708 char *buf) 2709 { 2710 return sysfs_emit(buf, "0x%08x\n", 2711 hotkey_all_mask | hotkey_source_mask); 2712 } 2713 2714 static DEVICE_ATTR_RO(hotkey_all_mask); 2715 2716 /* sysfs hotkey all_mask ----------------------------------------------- */ 2717 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2718 struct device_attribute *attr, 2719 char *buf) 2720 { 2721 return sysfs_emit(buf, "0x%08x\n", 2722 hotkey_adaptive_all_mask | hotkey_source_mask); 2723 } 2724 2725 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2726 2727 /* sysfs hotkey recommended_mask --------------------------------------- */ 2728 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2729 struct device_attribute *attr, 2730 char *buf) 2731 { 2732 return sysfs_emit(buf, "0x%08x\n", 2733 (hotkey_all_mask | hotkey_source_mask) 2734 & ~hotkey_reserved_mask); 2735 } 2736 2737 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2738 2739 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2740 2741 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2742 static ssize_t hotkey_source_mask_show(struct device *dev, 2743 struct device_attribute *attr, 2744 char *buf) 2745 { 2746 return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask); 2747 } 2748 2749 static ssize_t hotkey_source_mask_store(struct device *dev, 2750 struct device_attribute *attr, 2751 const char *buf, size_t count) 2752 { 2753 unsigned long t; 2754 u32 r_ev; 2755 int rc; 2756 2757 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2758 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2759 return -EINVAL; 2760 2761 if (mutex_lock_killable(&hotkey_mutex)) 2762 return -ERESTARTSYS; 2763 2764 HOTKEY_CONFIG_CRITICAL_START 2765 hotkey_source_mask = t; 2766 HOTKEY_CONFIG_CRITICAL_END 2767 2768 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2769 ~hotkey_source_mask); 2770 hotkey_poll_setup(true); 2771 2772 /* check if events needed by the driver got disabled */ 2773 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2774 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2775 2776 mutex_unlock(&hotkey_mutex); 2777 2778 if (rc < 0) 2779 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2780 2781 if (r_ev) 2782 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2783 r_ev); 2784 2785 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2786 2787 return (rc < 0) ? rc : count; 2788 } 2789 2790 static DEVICE_ATTR_RW(hotkey_source_mask); 2791 2792 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2793 static ssize_t hotkey_poll_freq_show(struct device *dev, 2794 struct device_attribute *attr, 2795 char *buf) 2796 { 2797 return sysfs_emit(buf, "%d\n", hotkey_poll_freq); 2798 } 2799 2800 static ssize_t hotkey_poll_freq_store(struct device *dev, 2801 struct device_attribute *attr, 2802 const char *buf, size_t count) 2803 { 2804 unsigned long t; 2805 2806 if (parse_strtoul(buf, 25, &t)) 2807 return -EINVAL; 2808 2809 if (mutex_lock_killable(&hotkey_mutex)) 2810 return -ERESTARTSYS; 2811 2812 hotkey_poll_set_freq(t); 2813 hotkey_poll_setup(true); 2814 2815 mutex_unlock(&hotkey_mutex); 2816 2817 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2818 2819 return count; 2820 } 2821 2822 static DEVICE_ATTR_RW(hotkey_poll_freq); 2823 2824 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2825 2826 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2827 static ssize_t hotkey_radio_sw_show(struct device *dev, 2828 struct device_attribute *attr, 2829 char *buf) 2830 { 2831 int res; 2832 res = hotkey_get_wlsw(); 2833 if (res < 0) 2834 return res; 2835 2836 /* Opportunistic update */ 2837 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2838 2839 return sysfs_emit(buf, "%d\n", 2840 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2841 } 2842 2843 static DEVICE_ATTR_RO(hotkey_radio_sw); 2844 2845 static void hotkey_radio_sw_notify_change(void) 2846 { 2847 if (tp_features.hotkey_wlsw) 2848 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2849 "hotkey_radio_sw"); 2850 } 2851 2852 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2853 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2854 struct device_attribute *attr, 2855 char *buf) 2856 { 2857 int res, s; 2858 res = hotkey_get_tablet_mode(&s); 2859 if (res < 0) 2860 return res; 2861 2862 return sysfs_emit(buf, "%d\n", !!s); 2863 } 2864 2865 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2866 2867 static void hotkey_tablet_mode_notify_change(void) 2868 { 2869 if (tp_features.hotkey_tablet) 2870 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2871 "hotkey_tablet_mode"); 2872 } 2873 2874 /* sysfs wakeup reason (pollable) -------------------------------------- */ 2875 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 2876 struct device_attribute *attr, 2877 char *buf) 2878 { 2879 return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason); 2880 } 2881 2882 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 2883 2884 static void hotkey_wakeup_reason_notify_change(void) 2885 { 2886 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2887 "wakeup_reason"); 2888 } 2889 2890 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 2891 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 2892 struct device_attribute *attr, 2893 char *buf) 2894 { 2895 return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack); 2896 } 2897 2898 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 2899 hotkey_wakeup_hotunplug_complete_show, NULL); 2900 2901 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 2902 { 2903 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2904 "wakeup_hotunplug_complete"); 2905 } 2906 2907 /* sysfs adaptive kbd mode --------------------------------------------- */ 2908 2909 static int adaptive_keyboard_get_mode(void); 2910 static int adaptive_keyboard_set_mode(int new_mode); 2911 2912 enum ADAPTIVE_KEY_MODE { 2913 HOME_MODE, 2914 WEB_BROWSER_MODE, 2915 WEB_CONFERENCE_MODE, 2916 FUNCTION_MODE, 2917 LAYFLAT_MODE 2918 }; 2919 2920 static ssize_t adaptive_kbd_mode_show(struct device *dev, 2921 struct device_attribute *attr, 2922 char *buf) 2923 { 2924 int current_mode; 2925 2926 current_mode = adaptive_keyboard_get_mode(); 2927 if (current_mode < 0) 2928 return current_mode; 2929 2930 return sysfs_emit(buf, "%d\n", current_mode); 2931 } 2932 2933 static ssize_t adaptive_kbd_mode_store(struct device *dev, 2934 struct device_attribute *attr, 2935 const char *buf, size_t count) 2936 { 2937 unsigned long t; 2938 int res; 2939 2940 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 2941 return -EINVAL; 2942 2943 res = adaptive_keyboard_set_mode(t); 2944 return (res < 0) ? res : count; 2945 } 2946 2947 static DEVICE_ATTR_RW(adaptive_kbd_mode); 2948 2949 static struct attribute *adaptive_kbd_attributes[] = { 2950 &dev_attr_adaptive_kbd_mode.attr, 2951 NULL 2952 }; 2953 2954 static umode_t hadaptive_kbd_attr_is_visible(struct kobject *kobj, 2955 struct attribute *attr, int n) 2956 { 2957 return tp_features.has_adaptive_kbd ? attr->mode : 0; 2958 } 2959 2960 static const struct attribute_group adaptive_kbd_attr_group = { 2961 .is_visible = hadaptive_kbd_attr_is_visible, 2962 .attrs = adaptive_kbd_attributes, 2963 }; 2964 2965 /* --------------------------------------------------------------------- */ 2966 2967 static struct attribute *hotkey_attributes[] = { 2968 &dev_attr_hotkey_enable.attr, 2969 &dev_attr_hotkey_bios_enabled.attr, 2970 &dev_attr_hotkey_bios_mask.attr, 2971 &dev_attr_wakeup_reason.attr, 2972 &dev_attr_wakeup_hotunplug_complete.attr, 2973 &dev_attr_hotkey_mask.attr, 2974 &dev_attr_hotkey_all_mask.attr, 2975 &dev_attr_hotkey_adaptive_all_mask.attr, 2976 &dev_attr_hotkey_recommended_mask.attr, 2977 &dev_attr_hotkey_tablet_mode.attr, 2978 &dev_attr_hotkey_radio_sw.attr, 2979 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2980 &dev_attr_hotkey_source_mask.attr, 2981 &dev_attr_hotkey_poll_freq.attr, 2982 #endif 2983 NULL 2984 }; 2985 2986 static umode_t hotkey_attr_is_visible(struct kobject *kobj, 2987 struct attribute *attr, int n) 2988 { 2989 if (attr == &dev_attr_hotkey_tablet_mode.attr) { 2990 if (!tp_features.hotkey_tablet) 2991 return 0; 2992 } else if (attr == &dev_attr_hotkey_radio_sw.attr) { 2993 if (!tp_features.hotkey_wlsw) 2994 return 0; 2995 } 2996 2997 return attr->mode; 2998 } 2999 3000 static const struct attribute_group hotkey_attr_group = { 3001 .is_visible = hotkey_attr_is_visible, 3002 .attrs = hotkey_attributes, 3003 }; 3004 3005 /* 3006 * Sync both the hw and sw blocking state of all switches 3007 */ 3008 static void tpacpi_send_radiosw_update(void) 3009 { 3010 int wlsw; 3011 3012 /* 3013 * We must sync all rfkill controllers *before* issuing any 3014 * rfkill input events, or we will race the rfkill core input 3015 * handler. 3016 * 3017 * tpacpi_inputdev_send_mutex works as a synchronization point 3018 * for the above. 3019 * 3020 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3021 */ 3022 3023 wlsw = hotkey_get_wlsw(); 3024 3025 /* Sync hw blocking state first if it is hw-blocked */ 3026 if (wlsw == TPACPI_RFK_RADIO_OFF) 3027 tpacpi_rfk_update_hwblock_state(true); 3028 3029 /* Sync hw blocking state last if it is hw-unblocked */ 3030 if (wlsw == TPACPI_RFK_RADIO_ON) 3031 tpacpi_rfk_update_hwblock_state(false); 3032 3033 /* Issue rfkill input event for WLSW switch */ 3034 if (!(wlsw < 0)) { 3035 mutex_lock(&tpacpi_inputdev_send_mutex); 3036 3037 input_report_switch(tpacpi_inputdev, 3038 SW_RFKILL_ALL, (wlsw > 0)); 3039 input_sync(tpacpi_inputdev); 3040 3041 mutex_unlock(&tpacpi_inputdev_send_mutex); 3042 } 3043 3044 /* 3045 * this can be unconditional, as we will poll state again 3046 * if userspace uses the notify to read data 3047 */ 3048 hotkey_radio_sw_notify_change(); 3049 } 3050 3051 static void hotkey_exit(void) 3052 { 3053 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3054 mutex_lock(&hotkey_mutex); 3055 hotkey_poll_stop_sync(); 3056 mutex_unlock(&hotkey_mutex); 3057 #endif 3058 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3059 "restoring original HKEY status and mask\n"); 3060 /* yes, there is a bitwise or below, we want the 3061 * functions to be called even if one of them fail */ 3062 if (((tp_features.hotkey_mask && 3063 hotkey_mask_set(hotkey_orig_mask)) | 3064 hotkey_status_set(false)) != 0) 3065 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3066 } 3067 3068 static void __init hotkey_unmap(const unsigned int scancode) 3069 { 3070 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3071 clear_bit(hotkey_keycode_map[scancode], 3072 tpacpi_inputdev->keybit); 3073 hotkey_keycode_map[scancode] = KEY_RESERVED; 3074 } 3075 } 3076 3077 /* 3078 * HKEY quirks: 3079 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3080 */ 3081 3082 #define TPACPI_HK_Q_INIMASK 0x0001 3083 3084 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3085 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3086 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3087 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3088 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3089 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3090 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3091 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3092 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3093 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3094 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3095 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3096 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3097 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3098 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3099 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3100 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3101 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3102 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3103 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3104 }; 3105 3106 typedef u16 tpacpi_keymap_entry_t; 3107 typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; 3108 3109 static int hotkey_init_tablet_mode(void) 3110 { 3111 int in_tablet_mode = 0, res; 3112 char *type = NULL; 3113 3114 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3115 int has_tablet_mode; 3116 3117 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3118 &has_tablet_mode); 3119 /* 3120 * The Yoga 11e series has 2 accelerometers described by a 3121 * BOSC0200 ACPI node. This setup relies on a Windows service 3122 * which calls special ACPI methods on this node to report 3123 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver 3124 * does not support this, so skip the hotkey on these models. 3125 */ 3126 if (has_tablet_mode && !dual_accel_detect()) 3127 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3128 type = "GMMS"; 3129 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3130 /* For X41t, X60t, X61t Tablets... */ 3131 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3132 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3133 type = "MHKG"; 3134 } 3135 3136 if (!tp_features.hotkey_tablet) 3137 return 0; 3138 3139 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3140 type, in_tablet_mode ? "tablet" : "laptop"); 3141 3142 return in_tablet_mode; 3143 } 3144 3145 static int __init hotkey_init(struct ibm_init_struct *iibm) 3146 { 3147 /* Requirements for changing the default keymaps: 3148 * 3149 * 1. Many of the keys are mapped to KEY_RESERVED for very 3150 * good reasons. Do not change them unless you have deep 3151 * knowledge on the IBM and Lenovo ThinkPad firmware for 3152 * the various ThinkPad models. The driver behaves 3153 * differently for KEY_RESERVED: such keys have their 3154 * hot key mask *unset* in mask_recommended, and also 3155 * in the initial hot key mask programmed into the 3156 * firmware at driver load time, which means the firm- 3157 * ware may react very differently if you change them to 3158 * something else; 3159 * 3160 * 2. You must be subscribed to the linux-thinkpad and 3161 * ibm-acpi-devel mailing lists, and you should read the 3162 * list archives since 2007 if you want to change the 3163 * keymaps. This requirement exists so that you will 3164 * know the past history of problems with the thinkpad- 3165 * acpi driver keymaps, and also that you will be 3166 * listening to any bug reports; 3167 * 3168 * 3. Do not send thinkpad-acpi specific patches directly to 3169 * for merging, *ever*. Send them to the linux-acpi 3170 * mailinglist for comments. Merging is to be done only 3171 * through acpi-test and the ACPI maintainer. 3172 * 3173 * If the above is too much to ask, don't change the keymap. 3174 * Ask the thinkpad-acpi maintainer to do it, instead. 3175 */ 3176 3177 enum keymap_index { 3178 TPACPI_KEYMAP_IBM_GENERIC = 0, 3179 TPACPI_KEYMAP_LENOVO_GENERIC, 3180 }; 3181 3182 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3183 /* Generic keymap for IBM ThinkPads */ 3184 [TPACPI_KEYMAP_IBM_GENERIC] = { 3185 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3186 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3187 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3188 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3189 3190 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3191 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3192 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3193 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3194 3195 /* brightness: firmware always reacts to them */ 3196 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3197 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3198 3199 /* Thinklight: firmware always react to it */ 3200 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3201 3202 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3203 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3204 3205 /* Volume: firmware always react to it and reprograms 3206 * the built-in *extra* mixer. Never map it to control 3207 * another mixer by default. */ 3208 KEY_RESERVED, /* 0x14: VOLUME UP */ 3209 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3210 KEY_RESERVED, /* 0x16: MUTE */ 3211 3212 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3213 3214 /* (assignments unknown, please report if found) */ 3215 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3216 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3217 3218 /* No assignments, only used for Adaptive keyboards. */ 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, 3224 3225 /* No assignment, used for newer Lenovo models */ 3226 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3227 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3228 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3229 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3230 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3231 KEY_UNKNOWN, KEY_UNKNOWN 3232 3233 }, 3234 3235 /* Generic keymap for Lenovo ThinkPads */ 3236 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3237 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3238 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3239 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3240 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3241 3242 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3243 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3244 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3245 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3246 3247 /* These should be enabled --only-- when ACPI video 3248 * is disabled (i.e. in "vendor" mode), and are handled 3249 * in a special way by the init code */ 3250 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3251 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3252 3253 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3254 3255 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3256 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3257 3258 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3259 * react to it and reprograms the built-in *extra* mixer. 3260 * Never map it to control another mixer by default. 3261 * 3262 * T60?, T61, R60?, R61: firmware and EC tries to send 3263 * these over the regular keyboard, so these are no-ops, 3264 * but there are still weird bugs re. MUTE, so do not 3265 * change unless you get test reports from all Lenovo 3266 * models. May cause the BIOS to interfere with the 3267 * HDA mixer. 3268 */ 3269 KEY_RESERVED, /* 0x14: VOLUME UP */ 3270 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3271 KEY_RESERVED, /* 0x16: MUTE */ 3272 3273 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3274 3275 /* (assignments unknown, please report if found) */ 3276 KEY_UNKNOWN, KEY_UNKNOWN, 3277 3278 /* 3279 * The mic mute button only sends 0x1a. It does not 3280 * automatically mute the mic or change the mute light. 3281 */ 3282 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3283 3284 /* (assignments unknown, please report if found) */ 3285 KEY_UNKNOWN, 3286 3287 /* Extra keys in use since the X240 / T440 / T540 */ 3288 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3289 3290 /* 3291 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3292 * The first item in this list is the Mute button which is 3293 * emitted with 0x103 through 3294 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3295 * symbol is held. 3296 * We'll need to offset those by 0x20. 3297 */ 3298 KEY_RESERVED, /* Mute held, 0x103 */ 3299 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3300 KEY_RESERVED, /* Clipping tool */ 3301 KEY_RESERVED, /* Cloud */ 3302 KEY_RESERVED, 3303 KEY_VOICECOMMAND, /* Voice */ 3304 KEY_RESERVED, 3305 KEY_RESERVED, /* Gestures */ 3306 KEY_RESERVED, 3307 KEY_RESERVED, 3308 KEY_RESERVED, 3309 KEY_CONFIG, /* Settings */ 3310 KEY_RESERVED, /* New tab */ 3311 KEY_REFRESH, /* Reload */ 3312 KEY_BACK, /* Back */ 3313 KEY_RESERVED, /* Microphone down */ 3314 KEY_RESERVED, /* Microphone up */ 3315 KEY_RESERVED, /* Microphone cancellation */ 3316 KEY_RESERVED, /* Camera mode */ 3317 KEY_RESERVED, /* Rotate display, 0x116 */ 3318 3319 /* 3320 * These are found in 2017 models (e.g. T470s, X270). 3321 * The lowest known value is 0x311, which according to 3322 * the manual should launch a user defined favorite 3323 * application. 3324 * 3325 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3326 * corresponding to 0x34. 3327 */ 3328 3329 /* (assignments unknown, please report if found) */ 3330 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3331 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3332 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3333 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3334 KEY_UNKNOWN, 3335 3336 KEY_BOOKMARKS, /* Favorite app, 0x311 */ 3337 KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */ 3338 KEY_CALC, /* Calculator (above numpad, P52) */ 3339 KEY_BLUETOOTH, /* Bluetooth */ 3340 KEY_KEYBOARD, /* Keyboard, 0x315 */ 3341 KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */ 3342 KEY_NOTIFICATION_CENTER, /* Notification Center */ 3343 KEY_PICKUP_PHONE, /* Answer incoming call */ 3344 KEY_HANGUP_PHONE, /* Decline incoming call */ 3345 }, 3346 }; 3347 3348 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3349 /* Generic maps (fallback) */ 3350 { 3351 .vendor = PCI_VENDOR_ID_IBM, 3352 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3353 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3354 }, 3355 { 3356 .vendor = PCI_VENDOR_ID_LENOVO, 3357 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3358 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3359 }, 3360 }; 3361 3362 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3363 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3364 3365 int res, i; 3366 int status; 3367 int hkeyv; 3368 bool radiosw_state = false; 3369 bool tabletsw_state = false; 3370 3371 unsigned long quirks; 3372 unsigned long keymap_id; 3373 3374 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3375 "initializing hotkey subdriver\n"); 3376 3377 BUG_ON(!tpacpi_inputdev); 3378 BUG_ON(tpacpi_inputdev->open != NULL || 3379 tpacpi_inputdev->close != NULL); 3380 3381 TPACPI_ACPIHANDLE_INIT(hkey); 3382 mutex_init(&hotkey_mutex); 3383 3384 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3385 mutex_init(&hotkey_thread_data_mutex); 3386 #endif 3387 3388 /* hotkey not supported on 570 */ 3389 tp_features.hotkey = hkey_handle != NULL; 3390 3391 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3392 "hotkeys are %s\n", 3393 str_supported(tp_features.hotkey)); 3394 3395 if (!tp_features.hotkey) 3396 return -ENODEV; 3397 3398 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3399 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3400 3401 tpacpi_disable_brightness_delay(); 3402 3403 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3404 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3405 for HKEY interface version 0x100 */ 3406 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3407 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3408 "firmware HKEY interface version: 0x%x\n", 3409 hkeyv); 3410 3411 switch (hkeyv >> 8) { 3412 case 1: 3413 /* 3414 * MHKV 0x100 in A31, R40, R40e, 3415 * T4x, X31, and later 3416 */ 3417 3418 /* Paranoia check AND init hotkey_all_mask */ 3419 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3420 "MHKA", "qd")) { 3421 pr_err("missing MHKA handler, please report this to %s\n", 3422 TPACPI_MAIL); 3423 /* Fallback: pre-init for FN+F3,F4,F12 */ 3424 hotkey_all_mask = 0x080cU; 3425 } else { 3426 tp_features.hotkey_mask = 1; 3427 } 3428 break; 3429 3430 case 2: 3431 /* 3432 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3433 */ 3434 3435 /* Paranoia check AND init hotkey_all_mask */ 3436 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3437 "MHKA", "dd", 1)) { 3438 pr_err("missing MHKA handler, please report this to %s\n", 3439 TPACPI_MAIL); 3440 /* Fallback: pre-init for FN+F3,F4,F12 */ 3441 hotkey_all_mask = 0x080cU; 3442 } else { 3443 tp_features.hotkey_mask = 1; 3444 } 3445 3446 /* 3447 * Check if we have an adaptive keyboard, like on the 3448 * Lenovo Carbon X1 2014 (2nd Gen). 3449 */ 3450 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3451 "MHKA", "dd", 2)) { 3452 if (hotkey_adaptive_all_mask != 0) 3453 tp_features.has_adaptive_kbd = true; 3454 } else { 3455 tp_features.has_adaptive_kbd = false; 3456 hotkey_adaptive_all_mask = 0x0U; 3457 } 3458 break; 3459 3460 default: 3461 pr_err("unknown version of the HKEY interface: 0x%x\n", 3462 hkeyv); 3463 pr_err("please report this to %s\n", TPACPI_MAIL); 3464 break; 3465 } 3466 } 3467 3468 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3469 "hotkey masks are %s\n", 3470 str_supported(tp_features.hotkey_mask)); 3471 3472 /* Init hotkey_all_mask if not initialized yet */ 3473 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3474 (quirks & TPACPI_HK_Q_INIMASK)) 3475 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3476 3477 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3478 if (tp_features.hotkey_mask) { 3479 /* hotkey_source_mask *must* be zero for 3480 * the first hotkey_mask_get to return hotkey_orig_mask */ 3481 res = hotkey_mask_get(); 3482 if (res) 3483 return res; 3484 3485 hotkey_orig_mask = hotkey_acpi_mask; 3486 } else { 3487 hotkey_orig_mask = hotkey_all_mask; 3488 hotkey_acpi_mask = hotkey_all_mask; 3489 } 3490 3491 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3492 if (dbg_wlswemul) { 3493 tp_features.hotkey_wlsw = 1; 3494 radiosw_state = !!tpacpi_wlsw_emulstate; 3495 pr_info("radio switch emulation enabled\n"); 3496 } else 3497 #endif 3498 /* Not all thinkpads have a hardware radio switch */ 3499 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3500 tp_features.hotkey_wlsw = 1; 3501 radiosw_state = !!status; 3502 pr_info("radio switch found; radios are %s\n", str_enabled_disabled(status & BIT(0))); 3503 } 3504 3505 tabletsw_state = hotkey_init_tablet_mode(); 3506 3507 /* Set up key map */ 3508 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3509 ARRAY_SIZE(tpacpi_keymap_qtable)); 3510 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3511 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3512 "using keymap number %lu\n", keymap_id); 3513 3514 hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id], 3515 TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); 3516 if (!hotkey_keycode_map) { 3517 pr_err("failed to allocate memory for key map\n"); 3518 return -ENOMEM; 3519 } 3520 3521 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3522 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3523 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3524 tpacpi_inputdev->keycode = hotkey_keycode_map; 3525 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3526 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3527 input_set_capability(tpacpi_inputdev, EV_KEY, 3528 hotkey_keycode_map[i]); 3529 } else { 3530 if (i < sizeof(hotkey_reserved_mask)*8) 3531 hotkey_reserved_mask |= 1 << i; 3532 } 3533 } 3534 3535 if (tp_features.hotkey_wlsw) { 3536 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3537 input_report_switch(tpacpi_inputdev, 3538 SW_RFKILL_ALL, radiosw_state); 3539 } 3540 if (tp_features.hotkey_tablet) { 3541 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3542 input_report_switch(tpacpi_inputdev, 3543 SW_TABLET_MODE, tabletsw_state); 3544 } 3545 3546 /* Do not issue duplicate brightness change events to 3547 * userspace. tpacpi_detect_brightness_capabilities() must have 3548 * been called before this point */ 3549 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3550 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3551 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3552 3553 /* Disable brightness up/down on Lenovo thinkpads when 3554 * ACPI is handling them, otherwise it is plain impossible 3555 * for userspace to do something even remotely sane */ 3556 hotkey_reserved_mask |= 3557 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3558 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3559 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3560 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3561 } 3562 3563 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3564 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3565 & ~hotkey_all_mask 3566 & ~hotkey_reserved_mask; 3567 3568 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3569 "hotkey source mask 0x%08x, polling freq %u\n", 3570 hotkey_source_mask, hotkey_poll_freq); 3571 #endif 3572 3573 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3574 "enabling firmware HKEY event interface...\n"); 3575 res = hotkey_status_set(true); 3576 if (res) { 3577 hotkey_exit(); 3578 return res; 3579 } 3580 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3581 | hotkey_driver_mask) 3582 & ~hotkey_source_mask); 3583 if (res < 0 && res != -ENXIO) { 3584 hotkey_exit(); 3585 return res; 3586 } 3587 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3588 & ~hotkey_reserved_mask; 3589 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3590 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3591 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3592 3593 tpacpi_inputdev->open = &hotkey_inputdev_open; 3594 tpacpi_inputdev->close = &hotkey_inputdev_close; 3595 3596 hotkey_poll_setup_safe(true); 3597 3598 return 0; 3599 } 3600 3601 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3602 * mode, Web conference mode, Function mode and Lay-flat mode. 3603 * We support Home mode and Function mode currently. 3604 * 3605 * Will consider support rest of modes in future. 3606 * 3607 */ 3608 static const int adaptive_keyboard_modes[] = { 3609 HOME_MODE, 3610 /* WEB_BROWSER_MODE = 2, 3611 WEB_CONFERENCE_MODE = 3, */ 3612 FUNCTION_MODE 3613 }; 3614 3615 #define DFR_CHANGE_ROW 0x101 3616 #define DFR_SHOW_QUICKVIEW_ROW 0x102 3617 #define FIRST_ADAPTIVE_KEY 0x103 3618 3619 /* press Fn key a while second, it will switch to Function Mode. Then 3620 * release Fn key, previous mode be restored. 3621 */ 3622 static bool adaptive_keyboard_mode_is_saved; 3623 static int adaptive_keyboard_prev_mode; 3624 3625 static int adaptive_keyboard_get_mode(void) 3626 { 3627 int mode = 0; 3628 3629 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3630 pr_err("Cannot read adaptive keyboard mode\n"); 3631 return -EIO; 3632 } 3633 3634 return mode; 3635 } 3636 3637 static int adaptive_keyboard_set_mode(int new_mode) 3638 { 3639 if (new_mode < 0 || 3640 new_mode > LAYFLAT_MODE) 3641 return -EINVAL; 3642 3643 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3644 pr_err("Cannot set adaptive keyboard mode\n"); 3645 return -EIO; 3646 } 3647 3648 return 0; 3649 } 3650 3651 static int adaptive_keyboard_get_next_mode(int mode) 3652 { 3653 size_t i; 3654 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3655 3656 for (i = 0; i <= max_mode; i++) { 3657 if (adaptive_keyboard_modes[i] == mode) 3658 break; 3659 } 3660 3661 if (i >= max_mode) 3662 i = 0; 3663 else 3664 i++; 3665 3666 return adaptive_keyboard_modes[i]; 3667 } 3668 3669 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3670 { 3671 int current_mode = 0; 3672 int new_mode = 0; 3673 int keycode; 3674 3675 switch (scancode) { 3676 case DFR_CHANGE_ROW: 3677 if (adaptive_keyboard_mode_is_saved) { 3678 new_mode = adaptive_keyboard_prev_mode; 3679 adaptive_keyboard_mode_is_saved = false; 3680 } else { 3681 current_mode = adaptive_keyboard_get_mode(); 3682 if (current_mode < 0) 3683 return false; 3684 new_mode = adaptive_keyboard_get_next_mode( 3685 current_mode); 3686 } 3687 3688 if (adaptive_keyboard_set_mode(new_mode) < 0) 3689 return false; 3690 3691 return true; 3692 3693 case DFR_SHOW_QUICKVIEW_ROW: 3694 current_mode = adaptive_keyboard_get_mode(); 3695 if (current_mode < 0) 3696 return false; 3697 3698 adaptive_keyboard_prev_mode = current_mode; 3699 adaptive_keyboard_mode_is_saved = true; 3700 3701 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3702 return false; 3703 return true; 3704 3705 default: 3706 if (scancode < FIRST_ADAPTIVE_KEY || 3707 scancode >= FIRST_ADAPTIVE_KEY + 3708 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3709 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3710 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3711 scancode); 3712 return false; 3713 } 3714 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3715 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3716 if (keycode != KEY_RESERVED) { 3717 mutex_lock(&tpacpi_inputdev_send_mutex); 3718 3719 input_report_key(tpacpi_inputdev, keycode, 1); 3720 input_sync(tpacpi_inputdev); 3721 3722 input_report_key(tpacpi_inputdev, keycode, 0); 3723 input_sync(tpacpi_inputdev); 3724 3725 mutex_unlock(&tpacpi_inputdev_send_mutex); 3726 } 3727 return true; 3728 } 3729 } 3730 3731 static bool hotkey_notify_extended_hotkey(const u32 hkey) 3732 { 3733 unsigned int scancode; 3734 3735 switch (hkey) { 3736 case TP_HKEY_EV_PRIVACYGUARD_TOGGLE: 3737 case TP_HKEY_EV_AMT_TOGGLE: 3738 tpacpi_driver_event(hkey); 3739 return true; 3740 } 3741 3742 /* Extended keycodes start at 0x300 and our offset into the map 3743 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3744 * will be positive, but might not be in the correct range. 3745 */ 3746 scancode = (hkey & 0xfff) - (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3747 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3748 scancode < TPACPI_HOTKEY_MAP_LEN) { 3749 tpacpi_input_send_key(scancode); 3750 return true; 3751 } 3752 3753 return false; 3754 } 3755 3756 static bool hotkey_notify_hotkey(const u32 hkey, 3757 bool *send_acpi_ev, 3758 bool *ignore_acpi_ev) 3759 { 3760 /* 0x1000-0x1FFF: key presses */ 3761 unsigned int scancode = hkey & 0xfff; 3762 *send_acpi_ev = true; 3763 *ignore_acpi_ev = false; 3764 3765 /* 3766 * Original events are in the 0x10XX range, the adaptive keyboard 3767 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3768 * models, additional keys are emitted through 0x13XX. 3769 */ 3770 switch ((hkey >> 8) & 0xf) { 3771 case 0: 3772 if (scancode > 0 && 3773 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3774 /* HKEY event 0x1001 is scancode 0x00 */ 3775 scancode--; 3776 if (!(hotkey_source_mask & (1 << scancode))) { 3777 tpacpi_input_send_key_masked(scancode); 3778 *send_acpi_ev = false; 3779 } else { 3780 *ignore_acpi_ev = true; 3781 } 3782 return true; 3783 } 3784 break; 3785 3786 case 1: 3787 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3788 3789 case 3: 3790 return hotkey_notify_extended_hotkey(hkey); 3791 } 3792 3793 return false; 3794 } 3795 3796 static bool hotkey_notify_wakeup(const u32 hkey, 3797 bool *send_acpi_ev, 3798 bool *ignore_acpi_ev) 3799 { 3800 /* 0x2000-0x2FFF: Wakeup reason */ 3801 *send_acpi_ev = true; 3802 *ignore_acpi_ev = false; 3803 3804 switch (hkey) { 3805 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3806 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3807 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3808 *ignore_acpi_ev = true; 3809 break; 3810 3811 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3812 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3813 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3814 *ignore_acpi_ev = true; 3815 break; 3816 3817 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3818 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3819 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3820 /* how to auto-heal: */ 3821 /* 2313: woke up from S3, go to S4/S5 */ 3822 /* 2413: woke up from S4, go to S5 */ 3823 break; 3824 3825 default: 3826 return false; 3827 } 3828 3829 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3830 pr_info("woke up due to a hot-unplug request...\n"); 3831 hotkey_wakeup_reason_notify_change(); 3832 } 3833 return true; 3834 } 3835 3836 static bool hotkey_notify_dockevent(const u32 hkey, 3837 bool *send_acpi_ev, 3838 bool *ignore_acpi_ev) 3839 { 3840 /* 0x4000-0x4FFF: dock-related events */ 3841 *send_acpi_ev = true; 3842 *ignore_acpi_ev = false; 3843 3844 switch (hkey) { 3845 case TP_HKEY_EV_UNDOCK_ACK: 3846 /* ACPI undock operation completed after wakeup */ 3847 hotkey_autosleep_ack = 1; 3848 pr_info("undocked\n"); 3849 hotkey_wakeup_hotunplug_complete_notify_change(); 3850 return true; 3851 3852 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3853 pr_info("docked into hotplug port replicator\n"); 3854 return true; 3855 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3856 pr_info("undocked from hotplug port replicator\n"); 3857 return true; 3858 3859 /* 3860 * Deliberately ignore attaching and detaching the keybord cover to avoid 3861 * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events 3862 * to userspace. 3863 * 3864 * Please refer to the following thread for more information and a preliminary 3865 * implementation using the GTOP ("Get Tablet OPtions") interface that could be 3866 * extended to other attachment options of the ThinkPad X1 Tablet series, such as 3867 * the Pico cartridge dock module: 3868 * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/ 3869 */ 3870 case TP_HKEY_EV_KBD_COVER_ATTACH: 3871 case TP_HKEY_EV_KBD_COVER_DETACH: 3872 *send_acpi_ev = false; 3873 *ignore_acpi_ev = true; 3874 return true; 3875 3876 default: 3877 return false; 3878 } 3879 } 3880 3881 static bool hotkey_notify_usrevent(const u32 hkey, 3882 bool *send_acpi_ev, 3883 bool *ignore_acpi_ev) 3884 { 3885 /* 0x5000-0x5FFF: human interface helpers */ 3886 *send_acpi_ev = true; 3887 *ignore_acpi_ev = false; 3888 3889 switch (hkey) { 3890 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 3891 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 3892 return true; 3893 3894 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 3895 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 3896 tpacpi_input_send_tabletsw(); 3897 hotkey_tablet_mode_notify_change(); 3898 *send_acpi_ev = false; 3899 return true; 3900 3901 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 3902 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 3903 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 3904 /* do not propagate these events */ 3905 *ignore_acpi_ev = true; 3906 return true; 3907 3908 default: 3909 return false; 3910 } 3911 } 3912 3913 static void thermal_dump_all_sensors(void); 3914 static void palmsensor_refresh(void); 3915 3916 static bool hotkey_notify_6xxx(const u32 hkey, 3917 bool *send_acpi_ev, 3918 bool *ignore_acpi_ev) 3919 { 3920 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 3921 *send_acpi_ev = true; 3922 *ignore_acpi_ev = false; 3923 3924 switch (hkey) { 3925 case TP_HKEY_EV_THM_TABLE_CHANGED: 3926 pr_debug("EC reports: Thermal Table has changed\n"); 3927 /* recommended action: do nothing, we don't have 3928 * Lenovo ATM information */ 3929 return true; 3930 case TP_HKEY_EV_THM_CSM_COMPLETED: 3931 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 3932 /* Thermal event - pass on to event handler */ 3933 tpacpi_driver_event(hkey); 3934 return true; 3935 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 3936 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 3937 /* recommended action: do nothing, we don't have 3938 * Lenovo ATM information */ 3939 return true; 3940 case TP_HKEY_EV_ALARM_BAT_HOT: 3941 pr_crit("THERMAL ALARM: battery is too hot!\n"); 3942 /* recommended action: warn user through gui */ 3943 break; 3944 case TP_HKEY_EV_ALARM_BAT_XHOT: 3945 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 3946 /* recommended action: immediate sleep/hibernate */ 3947 break; 3948 case TP_HKEY_EV_ALARM_SENSOR_HOT: 3949 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 3950 /* recommended action: warn user through gui, that */ 3951 /* some internal component is too hot */ 3952 break; 3953 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 3954 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 3955 /* recommended action: immediate sleep/hibernate */ 3956 break; 3957 case TP_HKEY_EV_AC_CHANGED: 3958 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 3959 * AC status changed; can be triggered by plugging or 3960 * unplugging AC adapter, docking or undocking. */ 3961 3962 fallthrough; 3963 3964 case TP_HKEY_EV_KEY_NUMLOCK: 3965 case TP_HKEY_EV_KEY_FN: 3966 /* key press events, we just ignore them as long as the EC 3967 * is still reporting them in the normal keyboard stream */ 3968 *send_acpi_ev = false; 3969 *ignore_acpi_ev = true; 3970 return true; 3971 3972 case TP_HKEY_EV_KEY_FN_ESC: 3973 /* Get the media key status to force the status LED to update */ 3974 acpi_evalf(hkey_handle, NULL, "GMKS", "v"); 3975 *send_acpi_ev = false; 3976 *ignore_acpi_ev = true; 3977 return true; 3978 3979 case TP_HKEY_EV_TABLET_CHANGED: 3980 tpacpi_input_send_tabletsw(); 3981 hotkey_tablet_mode_notify_change(); 3982 *send_acpi_ev = false; 3983 return true; 3984 3985 case TP_HKEY_EV_PALM_DETECTED: 3986 case TP_HKEY_EV_PALM_UNDETECTED: 3987 /* palm detected - pass on to event handler */ 3988 palmsensor_refresh(); 3989 return true; 3990 3991 default: 3992 /* report simply as unknown, no sensor dump */ 3993 return false; 3994 } 3995 3996 thermal_dump_all_sensors(); 3997 return true; 3998 } 3999 4000 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 4001 { 4002 u32 hkey; 4003 bool send_acpi_ev; 4004 bool ignore_acpi_ev; 4005 bool known_ev; 4006 4007 if (event != 0x80) { 4008 pr_err("unknown HKEY notification event %d\n", event); 4009 /* forward it to userspace, maybe it knows how to handle it */ 4010 acpi_bus_generate_netlink_event( 4011 ibm->acpi->device->pnp.device_class, 4012 dev_name(&ibm->acpi->device->dev), 4013 event, 0); 4014 return; 4015 } 4016 4017 while (1) { 4018 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4019 pr_err("failed to retrieve HKEY event\n"); 4020 return; 4021 } 4022 4023 if (hkey == 0) { 4024 /* queue empty */ 4025 return; 4026 } 4027 4028 send_acpi_ev = true; 4029 ignore_acpi_ev = false; 4030 4031 switch (hkey >> 12) { 4032 case 1: 4033 /* 0x1000-0x1FFF: key presses */ 4034 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4035 &ignore_acpi_ev); 4036 break; 4037 case 2: 4038 /* 0x2000-0x2FFF: Wakeup reason */ 4039 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4040 &ignore_acpi_ev); 4041 break; 4042 case 3: 4043 /* 0x3000-0x3FFF: bay-related wakeups */ 4044 switch (hkey) { 4045 case TP_HKEY_EV_BAYEJ_ACK: 4046 hotkey_autosleep_ack = 1; 4047 pr_info("bay ejected\n"); 4048 hotkey_wakeup_hotunplug_complete_notify_change(); 4049 known_ev = true; 4050 break; 4051 case TP_HKEY_EV_OPTDRV_EJ: 4052 /* FIXME: kick libata if SATA link offline */ 4053 known_ev = true; 4054 break; 4055 default: 4056 known_ev = false; 4057 } 4058 break; 4059 case 4: 4060 /* 0x4000-0x4FFF: dock-related events */ 4061 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4062 &ignore_acpi_ev); 4063 break; 4064 case 5: 4065 /* 0x5000-0x5FFF: human interface helpers */ 4066 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4067 &ignore_acpi_ev); 4068 break; 4069 case 6: 4070 /* 0x6000-0x6FFF: thermal alarms/notices and 4071 * keyboard events */ 4072 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4073 &ignore_acpi_ev); 4074 break; 4075 case 7: 4076 /* 0x7000-0x7FFF: misc */ 4077 if (tp_features.hotkey_wlsw && 4078 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4079 tpacpi_send_radiosw_update(); 4080 send_acpi_ev = 0; 4081 known_ev = true; 4082 break; 4083 } 4084 fallthrough; /* to default */ 4085 default: 4086 known_ev = false; 4087 } 4088 if (!known_ev) { 4089 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4090 pr_notice("please report the conditions when this event happened to %s\n", 4091 TPACPI_MAIL); 4092 } 4093 4094 /* netlink events */ 4095 if (!ignore_acpi_ev && send_acpi_ev) { 4096 acpi_bus_generate_netlink_event( 4097 ibm->acpi->device->pnp.device_class, 4098 dev_name(&ibm->acpi->device->dev), 4099 event, hkey); 4100 } 4101 } 4102 } 4103 4104 static void hotkey_suspend(void) 4105 { 4106 /* Do these on suspend, we get the events on early resume! */ 4107 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4108 hotkey_autosleep_ack = 0; 4109 4110 /* save previous mode of adaptive keyboard of X1 Carbon */ 4111 if (tp_features.has_adaptive_kbd) { 4112 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4113 "GTRW", "dd", 0)) { 4114 pr_err("Cannot read adaptive keyboard mode.\n"); 4115 } 4116 } 4117 } 4118 4119 static void hotkey_resume(void) 4120 { 4121 tpacpi_disable_brightness_delay(); 4122 4123 if (hotkey_status_set(true) < 0 || 4124 hotkey_mask_set(hotkey_acpi_mask) < 0) 4125 pr_err("error while attempting to reset the event firmware interface\n"); 4126 4127 tpacpi_send_radiosw_update(); 4128 tpacpi_input_send_tabletsw(); 4129 hotkey_tablet_mode_notify_change(); 4130 hotkey_wakeup_reason_notify_change(); 4131 hotkey_wakeup_hotunplug_complete_notify_change(); 4132 hotkey_poll_setup_safe(false); 4133 4134 /* restore previous mode of adapive keyboard of X1 Carbon */ 4135 if (tp_features.has_adaptive_kbd) { 4136 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4137 adaptive_keyboard_prev_mode)) { 4138 pr_err("Cannot set adaptive keyboard mode.\n"); 4139 } 4140 } 4141 } 4142 4143 /* procfs -------------------------------------------------------------- */ 4144 static int hotkey_read(struct seq_file *m) 4145 { 4146 int res, status; 4147 4148 if (!tp_features.hotkey) { 4149 seq_printf(m, "status:\t\tnot supported\n"); 4150 return 0; 4151 } 4152 4153 if (mutex_lock_killable(&hotkey_mutex)) 4154 return -ERESTARTSYS; 4155 res = hotkey_status_get(&status); 4156 if (!res) 4157 res = hotkey_mask_get(); 4158 mutex_unlock(&hotkey_mutex); 4159 if (res) 4160 return res; 4161 4162 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status & BIT(0))); 4163 if (hotkey_all_mask) { 4164 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4165 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4166 } else { 4167 seq_printf(m, "mask:\t\tnot supported\n"); 4168 seq_printf(m, "commands:\tenable, disable, reset\n"); 4169 } 4170 4171 return 0; 4172 } 4173 4174 static void hotkey_enabledisable_warn(bool enable) 4175 { 4176 tpacpi_log_usertask("procfs hotkey enable/disable"); 4177 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4178 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4179 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4180 } 4181 4182 static int hotkey_write(char *buf) 4183 { 4184 int res; 4185 u32 mask; 4186 char *cmd; 4187 4188 if (!tp_features.hotkey) 4189 return -ENODEV; 4190 4191 if (mutex_lock_killable(&hotkey_mutex)) 4192 return -ERESTARTSYS; 4193 4194 mask = hotkey_user_mask; 4195 4196 res = 0; 4197 while ((cmd = strsep(&buf, ","))) { 4198 if (strstarts(cmd, "enable")) { 4199 hotkey_enabledisable_warn(1); 4200 } else if (strstarts(cmd, "disable")) { 4201 hotkey_enabledisable_warn(0); 4202 res = -EPERM; 4203 } else if (strstarts(cmd, "reset")) { 4204 mask = (hotkey_all_mask | hotkey_source_mask) 4205 & ~hotkey_reserved_mask; 4206 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4207 /* mask set */ 4208 } else if (sscanf(cmd, "%x", &mask) == 1) { 4209 /* mask set */ 4210 } else { 4211 res = -EINVAL; 4212 goto errexit; 4213 } 4214 } 4215 4216 if (!res) { 4217 tpacpi_disclose_usertask("procfs hotkey", 4218 "set mask to 0x%08x\n", mask); 4219 res = hotkey_user_mask_set(mask); 4220 } 4221 4222 errexit: 4223 mutex_unlock(&hotkey_mutex); 4224 return res; 4225 } 4226 4227 static const struct acpi_device_id ibm_htk_device_ids[] = { 4228 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4229 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4230 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4231 {"", 0}, 4232 }; 4233 4234 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4235 .hid = ibm_htk_device_ids, 4236 .notify = hotkey_notify, 4237 .handle = &hkey_handle, 4238 .type = ACPI_DEVICE_NOTIFY, 4239 }; 4240 4241 static struct ibm_struct hotkey_driver_data = { 4242 .name = "hotkey", 4243 .read = hotkey_read, 4244 .write = hotkey_write, 4245 .exit = hotkey_exit, 4246 .resume = hotkey_resume, 4247 .suspend = hotkey_suspend, 4248 .acpi = &ibm_hotkey_acpidriver, 4249 }; 4250 4251 /************************************************************************* 4252 * Bluetooth subdriver 4253 */ 4254 4255 enum { 4256 /* ACPI GBDC/SBDC bits */ 4257 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4258 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4259 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4260 0 = disable, 1 = enable */ 4261 }; 4262 4263 enum { 4264 /* ACPI \BLTH commands */ 4265 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4266 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4267 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4268 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4269 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4270 }; 4271 4272 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4273 4274 static int bluetooth_get_status(void) 4275 { 4276 int status; 4277 4278 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4279 if (dbg_bluetoothemul) 4280 return (tpacpi_bluetooth_emulstate) ? 4281 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4282 #endif 4283 4284 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4285 return -EIO; 4286 4287 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4288 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4289 } 4290 4291 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4292 { 4293 int status; 4294 4295 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s bluetooth\n", 4296 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4297 4298 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4299 if (dbg_bluetoothemul) { 4300 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4301 return 0; 4302 } 4303 #endif 4304 4305 if (state == TPACPI_RFK_RADIO_ON) 4306 status = TP_ACPI_BLUETOOTH_RADIOSSW 4307 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4308 else 4309 status = 0; 4310 4311 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4312 return -EIO; 4313 4314 return 0; 4315 } 4316 4317 /* sysfs bluetooth enable ---------------------------------------------- */ 4318 static ssize_t bluetooth_enable_show(struct device *dev, 4319 struct device_attribute *attr, 4320 char *buf) 4321 { 4322 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4323 attr, buf); 4324 } 4325 4326 static ssize_t bluetooth_enable_store(struct device *dev, 4327 struct device_attribute *attr, 4328 const char *buf, size_t count) 4329 { 4330 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4331 attr, buf, count); 4332 } 4333 4334 static DEVICE_ATTR_RW(bluetooth_enable); 4335 4336 /* --------------------------------------------------------------------- */ 4337 4338 static struct attribute *bluetooth_attributes[] = { 4339 &dev_attr_bluetooth_enable.attr, 4340 NULL 4341 }; 4342 4343 static umode_t bluetooth_attr_is_visible(struct kobject *kobj, 4344 struct attribute *attr, int n) 4345 { 4346 return tp_features.bluetooth ? attr->mode : 0; 4347 } 4348 4349 static const struct attribute_group bluetooth_attr_group = { 4350 .is_visible = bluetooth_attr_is_visible, 4351 .attrs = bluetooth_attributes, 4352 }; 4353 4354 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4355 .get_status = bluetooth_get_status, 4356 .set_status = bluetooth_set_status, 4357 }; 4358 4359 static void bluetooth_shutdown(void) 4360 { 4361 /* Order firmware to save current state to NVRAM */ 4362 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4363 TP_ACPI_BLTH_SAVE_STATE)) 4364 pr_notice("failed to save bluetooth state to NVRAM\n"); 4365 else 4366 vdbg_printk(TPACPI_DBG_RFKILL, 4367 "bluetooth state saved to NVRAM\n"); 4368 } 4369 4370 static void bluetooth_exit(void) 4371 { 4372 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4373 bluetooth_shutdown(); 4374 } 4375 4376 static const struct dmi_system_id fwbug_list[] __initconst = { 4377 { 4378 .ident = "ThinkPad E485", 4379 .driver_data = &quirk_btusb_bug, 4380 .matches = { 4381 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4382 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4383 }, 4384 }, 4385 { 4386 .ident = "ThinkPad E585", 4387 .driver_data = &quirk_btusb_bug, 4388 .matches = { 4389 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4390 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4391 }, 4392 }, 4393 { 4394 .ident = "ThinkPad A285 - 20MW", 4395 .driver_data = &quirk_btusb_bug, 4396 .matches = { 4397 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4398 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4399 }, 4400 }, 4401 { 4402 .ident = "ThinkPad A285 - 20MX", 4403 .driver_data = &quirk_btusb_bug, 4404 .matches = { 4405 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4406 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4407 }, 4408 }, 4409 { 4410 .ident = "ThinkPad A485 - 20MU", 4411 .driver_data = &quirk_btusb_bug, 4412 .matches = { 4413 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4414 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4415 }, 4416 }, 4417 { 4418 .ident = "ThinkPad A485 - 20MV", 4419 .driver_data = &quirk_btusb_bug, 4420 .matches = { 4421 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4422 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4423 }, 4424 }, 4425 { 4426 .ident = "L14 Gen2 AMD", 4427 .driver_data = &quirk_s2idle_bug, 4428 .matches = { 4429 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4430 DMI_MATCH(DMI_PRODUCT_NAME, "20X5"), 4431 } 4432 }, 4433 { 4434 .ident = "T14s Gen2 AMD", 4435 .driver_data = &quirk_s2idle_bug, 4436 .matches = { 4437 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4438 DMI_MATCH(DMI_PRODUCT_NAME, "20XF"), 4439 } 4440 }, 4441 { 4442 .ident = "X13 Gen2 AMD", 4443 .driver_data = &quirk_s2idle_bug, 4444 .matches = { 4445 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4446 DMI_MATCH(DMI_PRODUCT_NAME, "20XH"), 4447 } 4448 }, 4449 { 4450 .ident = "T14 Gen2 AMD", 4451 .driver_data = &quirk_s2idle_bug, 4452 .matches = { 4453 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4454 DMI_MATCH(DMI_PRODUCT_NAME, "20XK"), 4455 } 4456 }, 4457 { 4458 .ident = "T14 Gen1 AMD", 4459 .driver_data = &quirk_s2idle_bug, 4460 .matches = { 4461 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4462 DMI_MATCH(DMI_PRODUCT_NAME, "20UD"), 4463 } 4464 }, 4465 { 4466 .ident = "T14 Gen1 AMD", 4467 .driver_data = &quirk_s2idle_bug, 4468 .matches = { 4469 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4470 DMI_MATCH(DMI_PRODUCT_NAME, "20UE"), 4471 } 4472 }, 4473 { 4474 .ident = "T14s Gen1 AMD", 4475 .driver_data = &quirk_s2idle_bug, 4476 .matches = { 4477 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4478 DMI_MATCH(DMI_PRODUCT_NAME, "20UH"), 4479 } 4480 }, 4481 { 4482 .ident = "P14s Gen1 AMD", 4483 .driver_data = &quirk_s2idle_bug, 4484 .matches = { 4485 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4486 DMI_MATCH(DMI_PRODUCT_NAME, "20Y1"), 4487 } 4488 }, 4489 { 4490 .ident = "P14s Gen2 AMD", 4491 .driver_data = &quirk_s2idle_bug, 4492 .matches = { 4493 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4494 DMI_MATCH(DMI_PRODUCT_NAME, "21A0"), 4495 } 4496 }, 4497 { 4498 .ident = "P14s Gen2 AMD", 4499 .driver_data = &quirk_s2idle_bug, 4500 .matches = { 4501 DMI_MATCH(DMI_BOARD_VENDOR, "LENOVO"), 4502 DMI_MATCH(DMI_PRODUCT_NAME, "21A1"), 4503 } 4504 }, 4505 {} 4506 }; 4507 4508 #ifdef CONFIG_SUSPEND 4509 /* 4510 * Lenovo laptops from a variety of generations run a SMI handler during the D3->D0 4511 * transition that occurs specifically when exiting suspend to idle which can cause 4512 * large delays during resume when the IOMMU translation layer is enabled (the default 4513 * behavior) for NVME devices: 4514 * 4515 * To avoid this firmware problem, skip the SMI handler on these machines before the 4516 * D0 transition occurs. 4517 */ 4518 static void thinkpad_acpi_amd_s2idle_restore(void) 4519 { 4520 struct resource *res; 4521 void __iomem *addr; 4522 u8 val; 4523 4524 res = request_mem_region_muxed(tp_features.quirks->s2idle_bug_mmio, 1, 4525 "thinkpad_acpi_pm80"); 4526 if (!res) 4527 return; 4528 4529 addr = ioremap(tp_features.quirks->s2idle_bug_mmio, 1); 4530 if (!addr) 4531 goto cleanup_resource; 4532 4533 val = ioread8(addr); 4534 iowrite8(val & ~BIT(0), addr); 4535 4536 iounmap(addr); 4537 cleanup_resource: 4538 release_resource(res); 4539 kfree(res); 4540 } 4541 4542 static struct acpi_s2idle_dev_ops thinkpad_acpi_s2idle_dev_ops = { 4543 .restore = thinkpad_acpi_amd_s2idle_restore, 4544 }; 4545 #endif 4546 4547 static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4548 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4549 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4550 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4551 {} 4552 }; 4553 4554 4555 static int __init have_bt_fwbug(void) 4556 { 4557 /* 4558 * Some AMD based ThinkPads have a firmware bug that calling 4559 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4560 */ 4561 if (tp_features.quirks && tp_features.quirks->btusb_bug && 4562 pci_dev_present(fwbug_cards_ids)) { 4563 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4564 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4565 return 1; 4566 } else 4567 return 0; 4568 } 4569 4570 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4571 { 4572 int res; 4573 int status = 0; 4574 4575 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4576 "initializing bluetooth subdriver\n"); 4577 4578 TPACPI_ACPIHANDLE_INIT(hkey); 4579 4580 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4581 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4582 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4583 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4584 4585 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4586 "bluetooth is %s, status 0x%02x\n", 4587 str_supported(tp_features.bluetooth), 4588 status); 4589 4590 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4591 if (dbg_bluetoothemul) { 4592 tp_features.bluetooth = 1; 4593 pr_info("bluetooth switch emulation enabled\n"); 4594 } else 4595 #endif 4596 if (tp_features.bluetooth && 4597 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4598 /* no bluetooth hardware present in system */ 4599 tp_features.bluetooth = 0; 4600 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4601 "bluetooth hardware not installed\n"); 4602 } 4603 4604 if (!tp_features.bluetooth) 4605 return -ENODEV; 4606 4607 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4608 &bluetooth_tprfk_ops, 4609 RFKILL_TYPE_BLUETOOTH, 4610 TPACPI_RFK_BLUETOOTH_SW_NAME, 4611 true); 4612 return res; 4613 } 4614 4615 /* procfs -------------------------------------------------------------- */ 4616 static int bluetooth_read(struct seq_file *m) 4617 { 4618 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4619 } 4620 4621 static int bluetooth_write(char *buf) 4622 { 4623 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4624 } 4625 4626 static struct ibm_struct bluetooth_driver_data = { 4627 .name = "bluetooth", 4628 .read = bluetooth_read, 4629 .write = bluetooth_write, 4630 .exit = bluetooth_exit, 4631 .shutdown = bluetooth_shutdown, 4632 }; 4633 4634 /************************************************************************* 4635 * Wan subdriver 4636 */ 4637 4638 enum { 4639 /* ACPI GWAN/SWAN bits */ 4640 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4641 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4642 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4643 0 = disable, 1 = enable */ 4644 }; 4645 4646 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4647 4648 static int wan_get_status(void) 4649 { 4650 int status; 4651 4652 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4653 if (dbg_wwanemul) 4654 return (tpacpi_wwan_emulstate) ? 4655 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4656 #endif 4657 4658 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4659 return -EIO; 4660 4661 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4662 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4663 } 4664 4665 static int wan_set_status(enum tpacpi_rfkill_state state) 4666 { 4667 int status; 4668 4669 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s wwan\n", 4670 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4671 4672 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4673 if (dbg_wwanemul) { 4674 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4675 return 0; 4676 } 4677 #endif 4678 4679 if (state == TPACPI_RFK_RADIO_ON) 4680 status = TP_ACPI_WANCARD_RADIOSSW 4681 | TP_ACPI_WANCARD_RESUMECTRL; 4682 else 4683 status = 0; 4684 4685 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4686 return -EIO; 4687 4688 return 0; 4689 } 4690 4691 /* sysfs wan enable ---------------------------------------------------- */ 4692 static ssize_t wan_enable_show(struct device *dev, 4693 struct device_attribute *attr, 4694 char *buf) 4695 { 4696 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4697 attr, buf); 4698 } 4699 4700 static ssize_t wan_enable_store(struct device *dev, 4701 struct device_attribute *attr, 4702 const char *buf, size_t count) 4703 { 4704 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4705 attr, buf, count); 4706 } 4707 4708 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4709 wan_enable_show, wan_enable_store); 4710 4711 /* --------------------------------------------------------------------- */ 4712 4713 static struct attribute *wan_attributes[] = { 4714 &dev_attr_wwan_enable.attr, 4715 NULL 4716 }; 4717 4718 static umode_t wan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 4719 int n) 4720 { 4721 return tp_features.wan ? attr->mode : 0; 4722 } 4723 4724 static const struct attribute_group wan_attr_group = { 4725 .is_visible = wan_attr_is_visible, 4726 .attrs = wan_attributes, 4727 }; 4728 4729 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4730 .get_status = wan_get_status, 4731 .set_status = wan_set_status, 4732 }; 4733 4734 static void wan_shutdown(void) 4735 { 4736 /* Order firmware to save current state to NVRAM */ 4737 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4738 TP_ACPI_WGSV_SAVE_STATE)) 4739 pr_notice("failed to save WWAN state to NVRAM\n"); 4740 else 4741 vdbg_printk(TPACPI_DBG_RFKILL, 4742 "WWAN state saved to NVRAM\n"); 4743 } 4744 4745 static void wan_exit(void) 4746 { 4747 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4748 wan_shutdown(); 4749 } 4750 4751 static int __init wan_init(struct ibm_init_struct *iibm) 4752 { 4753 int res; 4754 int status = 0; 4755 4756 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4757 "initializing wan subdriver\n"); 4758 4759 TPACPI_ACPIHANDLE_INIT(hkey); 4760 4761 tp_features.wan = hkey_handle && 4762 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4763 4764 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4765 "wan is %s, status 0x%02x\n", 4766 str_supported(tp_features.wan), 4767 status); 4768 4769 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4770 if (dbg_wwanemul) { 4771 tp_features.wan = 1; 4772 pr_info("wwan switch emulation enabled\n"); 4773 } else 4774 #endif 4775 if (tp_features.wan && 4776 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4777 /* no wan hardware present in system */ 4778 tp_features.wan = 0; 4779 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4780 "wan hardware not installed\n"); 4781 } 4782 4783 if (!tp_features.wan) 4784 return -ENODEV; 4785 4786 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4787 &wan_tprfk_ops, 4788 RFKILL_TYPE_WWAN, 4789 TPACPI_RFK_WWAN_SW_NAME, 4790 true); 4791 return res; 4792 } 4793 4794 /* procfs -------------------------------------------------------------- */ 4795 static int wan_read(struct seq_file *m) 4796 { 4797 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4798 } 4799 4800 static int wan_write(char *buf) 4801 { 4802 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4803 } 4804 4805 static struct ibm_struct wan_driver_data = { 4806 .name = "wan", 4807 .read = wan_read, 4808 .write = wan_write, 4809 .exit = wan_exit, 4810 .shutdown = wan_shutdown, 4811 }; 4812 4813 /************************************************************************* 4814 * UWB subdriver 4815 */ 4816 4817 enum { 4818 /* ACPI GUWB/SUWB bits */ 4819 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4820 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4821 }; 4822 4823 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4824 4825 static int uwb_get_status(void) 4826 { 4827 int status; 4828 4829 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4830 if (dbg_uwbemul) 4831 return (tpacpi_uwb_emulstate) ? 4832 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4833 #endif 4834 4835 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4836 return -EIO; 4837 4838 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4839 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4840 } 4841 4842 static int uwb_set_status(enum tpacpi_rfkill_state state) 4843 { 4844 int status; 4845 4846 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s UWB\n", 4847 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4848 4849 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4850 if (dbg_uwbemul) { 4851 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4852 return 0; 4853 } 4854 #endif 4855 4856 if (state == TPACPI_RFK_RADIO_ON) 4857 status = TP_ACPI_UWB_RADIOSSW; 4858 else 4859 status = 0; 4860 4861 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4862 return -EIO; 4863 4864 return 0; 4865 } 4866 4867 /* --------------------------------------------------------------------- */ 4868 4869 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4870 .get_status = uwb_get_status, 4871 .set_status = uwb_set_status, 4872 }; 4873 4874 static void uwb_exit(void) 4875 { 4876 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4877 } 4878 4879 static int __init uwb_init(struct ibm_init_struct *iibm) 4880 { 4881 int res; 4882 int status = 0; 4883 4884 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4885 "initializing uwb subdriver\n"); 4886 4887 TPACPI_ACPIHANDLE_INIT(hkey); 4888 4889 tp_features.uwb = hkey_handle && 4890 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4891 4892 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4893 "uwb is %s, status 0x%02x\n", 4894 str_supported(tp_features.uwb), 4895 status); 4896 4897 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4898 if (dbg_uwbemul) { 4899 tp_features.uwb = 1; 4900 pr_info("uwb switch emulation enabled\n"); 4901 } else 4902 #endif 4903 if (tp_features.uwb && 4904 !(status & TP_ACPI_UWB_HWPRESENT)) { 4905 /* no uwb hardware present in system */ 4906 tp_features.uwb = 0; 4907 dbg_printk(TPACPI_DBG_INIT, 4908 "uwb hardware not installed\n"); 4909 } 4910 4911 if (!tp_features.uwb) 4912 return -ENODEV; 4913 4914 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4915 &uwb_tprfk_ops, 4916 RFKILL_TYPE_UWB, 4917 TPACPI_RFK_UWB_SW_NAME, 4918 false); 4919 return res; 4920 } 4921 4922 static struct ibm_struct uwb_driver_data = { 4923 .name = "uwb", 4924 .exit = uwb_exit, 4925 .flags.experimental = 1, 4926 }; 4927 4928 /************************************************************************* 4929 * Video subdriver 4930 */ 4931 4932 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4933 4934 enum video_access_mode { 4935 TPACPI_VIDEO_NONE = 0, 4936 TPACPI_VIDEO_570, /* 570 */ 4937 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4938 TPACPI_VIDEO_NEW, /* all others */ 4939 }; 4940 4941 enum { /* video status flags, based on VIDEO_570 */ 4942 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4943 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4944 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4945 }; 4946 4947 enum { /* TPACPI_VIDEO_570 constants */ 4948 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4949 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4950 * video_status_flags */ 4951 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4952 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4953 }; 4954 4955 static enum video_access_mode video_supported; 4956 static int video_orig_autosw; 4957 4958 static int video_autosw_get(void); 4959 static int video_autosw_set(int enable); 4960 4961 TPACPI_HANDLE(vid, root, 4962 "\\_SB.PCI.AGP.VGA", /* 570 */ 4963 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4964 "\\_SB.PCI0.VID0", /* 770e */ 4965 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4966 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4967 "\\_SB.PCI0.AGP.VID", /* all others */ 4968 ); /* R30, R31 */ 4969 4970 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4971 4972 static int __init video_init(struct ibm_init_struct *iibm) 4973 { 4974 int ivga; 4975 4976 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4977 4978 TPACPI_ACPIHANDLE_INIT(vid); 4979 if (tpacpi_is_ibm()) 4980 TPACPI_ACPIHANDLE_INIT(vid2); 4981 4982 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4983 /* G41, assume IVGA doesn't change */ 4984 vid_handle = vid2_handle; 4985 4986 if (!vid_handle) 4987 /* video switching not supported on R30, R31 */ 4988 video_supported = TPACPI_VIDEO_NONE; 4989 else if (tpacpi_is_ibm() && 4990 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4991 /* 570 */ 4992 video_supported = TPACPI_VIDEO_570; 4993 else if (tpacpi_is_ibm() && 4994 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4995 /* 600e/x, 770e, 770x */ 4996 video_supported = TPACPI_VIDEO_770; 4997 else 4998 /* all others */ 4999 video_supported = TPACPI_VIDEO_NEW; 5000 5001 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 5002 str_supported(video_supported != TPACPI_VIDEO_NONE), 5003 video_supported); 5004 5005 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : -ENODEV; 5006 } 5007 5008 static void video_exit(void) 5009 { 5010 dbg_printk(TPACPI_DBG_EXIT, 5011 "restoring original video autoswitch mode\n"); 5012 if (video_autosw_set(video_orig_autosw)) 5013 pr_err("error while trying to restore original video autoswitch mode\n"); 5014 } 5015 5016 static int video_outputsw_get(void) 5017 { 5018 int status = 0; 5019 int i; 5020 5021 switch (video_supported) { 5022 case TPACPI_VIDEO_570: 5023 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 5024 TP_ACPI_VIDEO_570_PHSCMD)) 5025 return -EIO; 5026 status = i & TP_ACPI_VIDEO_570_PHSMASK; 5027 break; 5028 case TPACPI_VIDEO_770: 5029 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 5030 return -EIO; 5031 if (i) 5032 status |= TP_ACPI_VIDEO_S_LCD; 5033 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 5034 return -EIO; 5035 if (i) 5036 status |= TP_ACPI_VIDEO_S_CRT; 5037 break; 5038 case TPACPI_VIDEO_NEW: 5039 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 5040 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 5041 return -EIO; 5042 if (i) 5043 status |= TP_ACPI_VIDEO_S_CRT; 5044 5045 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 5046 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 5047 return -EIO; 5048 if (i) 5049 status |= TP_ACPI_VIDEO_S_LCD; 5050 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 5051 return -EIO; 5052 if (i) 5053 status |= TP_ACPI_VIDEO_S_DVI; 5054 break; 5055 default: 5056 return -ENOSYS; 5057 } 5058 5059 return status; 5060 } 5061 5062 static int video_outputsw_set(int status) 5063 { 5064 int autosw; 5065 int res = 0; 5066 5067 switch (video_supported) { 5068 case TPACPI_VIDEO_570: 5069 res = acpi_evalf(NULL, NULL, 5070 "\\_SB.PHS2", "vdd", 5071 TP_ACPI_VIDEO_570_PHS2CMD, 5072 status | TP_ACPI_VIDEO_570_PHS2SET); 5073 break; 5074 case TPACPI_VIDEO_770: 5075 autosw = video_autosw_get(); 5076 if (autosw < 0) 5077 return autosw; 5078 5079 res = video_autosw_set(1); 5080 if (res) 5081 return res; 5082 res = acpi_evalf(vid_handle, NULL, 5083 "ASWT", "vdd", status * 0x100, 0); 5084 if (!autosw && video_autosw_set(autosw)) { 5085 pr_err("video auto-switch left enabled due to error\n"); 5086 return -EIO; 5087 } 5088 break; 5089 case TPACPI_VIDEO_NEW: 5090 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 5091 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 5092 break; 5093 default: 5094 return -ENOSYS; 5095 } 5096 5097 return (res) ? 0 : -EIO; 5098 } 5099 5100 static int video_autosw_get(void) 5101 { 5102 int autosw = 0; 5103 5104 switch (video_supported) { 5105 case TPACPI_VIDEO_570: 5106 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 5107 return -EIO; 5108 break; 5109 case TPACPI_VIDEO_770: 5110 case TPACPI_VIDEO_NEW: 5111 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 5112 return -EIO; 5113 break; 5114 default: 5115 return -ENOSYS; 5116 } 5117 5118 return autosw & 1; 5119 } 5120 5121 static int video_autosw_set(int enable) 5122 { 5123 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 5124 return -EIO; 5125 return 0; 5126 } 5127 5128 static int video_outputsw_cycle(void) 5129 { 5130 int autosw = video_autosw_get(); 5131 int res; 5132 5133 if (autosw < 0) 5134 return autosw; 5135 5136 switch (video_supported) { 5137 case TPACPI_VIDEO_570: 5138 res = video_autosw_set(1); 5139 if (res) 5140 return res; 5141 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5142 break; 5143 case TPACPI_VIDEO_770: 5144 case TPACPI_VIDEO_NEW: 5145 res = video_autosw_set(1); 5146 if (res) 5147 return res; 5148 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5149 break; 5150 default: 5151 return -ENOSYS; 5152 } 5153 if (!autosw && video_autosw_set(autosw)) { 5154 pr_err("video auto-switch left enabled due to error\n"); 5155 return -EIO; 5156 } 5157 5158 return (res) ? 0 : -EIO; 5159 } 5160 5161 static int video_expand_toggle(void) 5162 { 5163 switch (video_supported) { 5164 case TPACPI_VIDEO_570: 5165 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5166 0 : -EIO; 5167 case TPACPI_VIDEO_770: 5168 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5169 0 : -EIO; 5170 case TPACPI_VIDEO_NEW: 5171 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5172 0 : -EIO; 5173 default: 5174 return -ENOSYS; 5175 } 5176 /* not reached */ 5177 } 5178 5179 static int video_read(struct seq_file *m) 5180 { 5181 int status, autosw; 5182 5183 if (video_supported == TPACPI_VIDEO_NONE) { 5184 seq_printf(m, "status:\t\tnot supported\n"); 5185 return 0; 5186 } 5187 5188 /* Even reads can crash X.org, so... */ 5189 if (!capable(CAP_SYS_ADMIN)) 5190 return -EPERM; 5191 5192 status = video_outputsw_get(); 5193 if (status < 0) 5194 return status; 5195 5196 autosw = video_autosw_get(); 5197 if (autosw < 0) 5198 return autosw; 5199 5200 seq_printf(m, "status:\t\tsupported\n"); 5201 seq_printf(m, "lcd:\t\t%s\n", str_enabled_disabled(status & BIT(0))); 5202 seq_printf(m, "crt:\t\t%s\n", str_enabled_disabled(status & BIT(1))); 5203 if (video_supported == TPACPI_VIDEO_NEW) 5204 seq_printf(m, "dvi:\t\t%s\n", str_enabled_disabled(status & BIT(3))); 5205 seq_printf(m, "auto:\t\t%s\n", str_enabled_disabled(autosw & BIT(0))); 5206 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5207 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5208 if (video_supported == TPACPI_VIDEO_NEW) 5209 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5210 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5211 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5212 5213 return 0; 5214 } 5215 5216 static int video_write(char *buf) 5217 { 5218 char *cmd; 5219 int enable, disable, status; 5220 int res; 5221 5222 if (video_supported == TPACPI_VIDEO_NONE) 5223 return -ENODEV; 5224 5225 /* Even reads can crash X.org, let alone writes... */ 5226 if (!capable(CAP_SYS_ADMIN)) 5227 return -EPERM; 5228 5229 enable = 0; 5230 disable = 0; 5231 5232 while ((cmd = strsep(&buf, ","))) { 5233 if (strstarts(cmd, "lcd_enable")) { 5234 enable |= TP_ACPI_VIDEO_S_LCD; 5235 } else if (strstarts(cmd, "lcd_disable")) { 5236 disable |= TP_ACPI_VIDEO_S_LCD; 5237 } else if (strstarts(cmd, "crt_enable")) { 5238 enable |= TP_ACPI_VIDEO_S_CRT; 5239 } else if (strstarts(cmd, "crt_disable")) { 5240 disable |= TP_ACPI_VIDEO_S_CRT; 5241 } else if (video_supported == TPACPI_VIDEO_NEW && 5242 strstarts(cmd, "dvi_enable")) { 5243 enable |= TP_ACPI_VIDEO_S_DVI; 5244 } else if (video_supported == TPACPI_VIDEO_NEW && 5245 strstarts(cmd, "dvi_disable")) { 5246 disable |= TP_ACPI_VIDEO_S_DVI; 5247 } else if (strstarts(cmd, "auto_enable")) { 5248 res = video_autosw_set(1); 5249 if (res) 5250 return res; 5251 } else if (strstarts(cmd, "auto_disable")) { 5252 res = video_autosw_set(0); 5253 if (res) 5254 return res; 5255 } else if (strstarts(cmd, "video_switch")) { 5256 res = video_outputsw_cycle(); 5257 if (res) 5258 return res; 5259 } else if (strstarts(cmd, "expand_toggle")) { 5260 res = video_expand_toggle(); 5261 if (res) 5262 return res; 5263 } else 5264 return -EINVAL; 5265 } 5266 5267 if (enable || disable) { 5268 status = video_outputsw_get(); 5269 if (status < 0) 5270 return status; 5271 res = video_outputsw_set((status & ~disable) | enable); 5272 if (res) 5273 return res; 5274 } 5275 5276 return 0; 5277 } 5278 5279 static struct ibm_struct video_driver_data = { 5280 .name = "video", 5281 .read = video_read, 5282 .write = video_write, 5283 .exit = video_exit, 5284 }; 5285 5286 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5287 5288 /************************************************************************* 5289 * Keyboard backlight subdriver 5290 */ 5291 5292 static enum led_brightness kbdlight_brightness; 5293 static DEFINE_MUTEX(kbdlight_mutex); 5294 5295 static int kbdlight_set_level(int level) 5296 { 5297 int ret = 0; 5298 5299 if (!hkey_handle) 5300 return -ENXIO; 5301 5302 mutex_lock(&kbdlight_mutex); 5303 5304 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5305 ret = -EIO; 5306 else 5307 kbdlight_brightness = level; 5308 5309 mutex_unlock(&kbdlight_mutex); 5310 5311 return ret; 5312 } 5313 5314 static int kbdlight_get_level(void) 5315 { 5316 int status = 0; 5317 5318 if (!hkey_handle) 5319 return -ENXIO; 5320 5321 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5322 return -EIO; 5323 5324 if (status < 0) 5325 return status; 5326 5327 return status & 0x3; 5328 } 5329 5330 static bool kbdlight_is_supported(void) 5331 { 5332 int status = 0; 5333 5334 if (!hkey_handle) 5335 return false; 5336 5337 if (!acpi_has_method(hkey_handle, "MLCG")) { 5338 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5339 return false; 5340 } 5341 5342 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5343 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5344 return false; 5345 } 5346 5347 if (status < 0) { 5348 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5349 return false; 5350 } 5351 5352 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5353 /* 5354 * Guessed test for keyboard backlight: 5355 * 5356 * Machines with backlight keyboard return: 5357 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5358 * b110100010010000000XX - ThinkPad x230 5359 * b010100000010000000XX - ThinkPad x240 5360 * b010100000010000000XX - ThinkPad W541 5361 * (XX is current backlight level) 5362 * 5363 * Machines without backlight keyboard return: 5364 * b10100001000000000000 - ThinkPad x230 5365 * b10110001000000000000 - ThinkPad E430 5366 * b00000000000000000000 - ThinkPad E450 5367 * 5368 * Candidate BITs for detection test (XOR): 5369 * b01000000001000000000 5370 * ^ 5371 */ 5372 return status & BIT(9); 5373 } 5374 5375 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5376 enum led_brightness brightness) 5377 { 5378 return kbdlight_set_level(brightness); 5379 } 5380 5381 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5382 { 5383 int level; 5384 5385 level = kbdlight_get_level(); 5386 if (level < 0) 5387 return 0; 5388 5389 return level; 5390 } 5391 5392 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5393 .led_classdev = { 5394 .name = "tpacpi::kbd_backlight", 5395 .max_brightness = 2, 5396 .flags = LED_BRIGHT_HW_CHANGED, 5397 .brightness_set_blocking = &kbdlight_sysfs_set, 5398 .brightness_get = &kbdlight_sysfs_get, 5399 } 5400 }; 5401 5402 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5403 { 5404 int rc; 5405 5406 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5407 5408 TPACPI_ACPIHANDLE_INIT(hkey); 5409 5410 if (!kbdlight_is_supported()) { 5411 tp_features.kbdlight = 0; 5412 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5413 return -ENODEV; 5414 } 5415 5416 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5417 tp_features.kbdlight = 1; 5418 5419 rc = led_classdev_register(&tpacpi_pdev->dev, 5420 &tpacpi_led_kbdlight.led_classdev); 5421 if (rc < 0) { 5422 tp_features.kbdlight = 0; 5423 return rc; 5424 } 5425 5426 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5427 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5428 return 0; 5429 } 5430 5431 static void kbdlight_exit(void) 5432 { 5433 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5434 } 5435 5436 static int kbdlight_set_level_and_update(int level) 5437 { 5438 int ret; 5439 struct led_classdev *led_cdev; 5440 5441 ret = kbdlight_set_level(level); 5442 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5443 5444 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5445 led_cdev->brightness = level; 5446 5447 return ret; 5448 } 5449 5450 static int kbdlight_read(struct seq_file *m) 5451 { 5452 int level; 5453 5454 if (!tp_features.kbdlight) { 5455 seq_printf(m, "status:\t\tnot supported\n"); 5456 } else { 5457 level = kbdlight_get_level(); 5458 if (level < 0) 5459 seq_printf(m, "status:\t\terror %d\n", level); 5460 else 5461 seq_printf(m, "status:\t\t%d\n", level); 5462 seq_printf(m, "commands:\t0, 1, 2\n"); 5463 } 5464 5465 return 0; 5466 } 5467 5468 static int kbdlight_write(char *buf) 5469 { 5470 char *cmd; 5471 int res, level = -EINVAL; 5472 5473 if (!tp_features.kbdlight) 5474 return -ENODEV; 5475 5476 while ((cmd = strsep(&buf, ","))) { 5477 res = kstrtoint(cmd, 10, &level); 5478 if (res < 0) 5479 return res; 5480 } 5481 5482 if (level >= 3 || level < 0) 5483 return -EINVAL; 5484 5485 return kbdlight_set_level_and_update(level); 5486 } 5487 5488 static void kbdlight_suspend(void) 5489 { 5490 struct led_classdev *led_cdev; 5491 5492 if (!tp_features.kbdlight) 5493 return; 5494 5495 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5496 led_update_brightness(led_cdev); 5497 led_classdev_suspend(led_cdev); 5498 } 5499 5500 static void kbdlight_resume(void) 5501 { 5502 if (!tp_features.kbdlight) 5503 return; 5504 5505 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5506 } 5507 5508 static struct ibm_struct kbdlight_driver_data = { 5509 .name = "kbdlight", 5510 .read = kbdlight_read, 5511 .write = kbdlight_write, 5512 .suspend = kbdlight_suspend, 5513 .resume = kbdlight_resume, 5514 .exit = kbdlight_exit, 5515 }; 5516 5517 /************************************************************************* 5518 * Light (thinklight) subdriver 5519 */ 5520 5521 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5522 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5523 5524 static int light_get_status(void) 5525 { 5526 int status = 0; 5527 5528 if (tp_features.light_status) { 5529 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5530 return -EIO; 5531 return (!!status); 5532 } 5533 5534 return -ENXIO; 5535 } 5536 5537 static int light_set_status(int status) 5538 { 5539 int rc; 5540 5541 if (tp_features.light) { 5542 if (cmos_handle) { 5543 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5544 (status) ? 5545 TP_CMOS_THINKLIGHT_ON : 5546 TP_CMOS_THINKLIGHT_OFF); 5547 } else { 5548 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5549 (status) ? 1 : 0); 5550 } 5551 return (rc) ? 0 : -EIO; 5552 } 5553 5554 return -ENXIO; 5555 } 5556 5557 static int light_sysfs_set(struct led_classdev *led_cdev, 5558 enum led_brightness brightness) 5559 { 5560 return light_set_status((brightness != LED_OFF) ? 5561 TPACPI_LED_ON : TPACPI_LED_OFF); 5562 } 5563 5564 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5565 { 5566 return (light_get_status() == 1) ? LED_FULL : LED_OFF; 5567 } 5568 5569 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5570 .led_classdev = { 5571 .name = "tpacpi::thinklight", 5572 .max_brightness = 1, 5573 .brightness_set_blocking = &light_sysfs_set, 5574 .brightness_get = &light_sysfs_get, 5575 } 5576 }; 5577 5578 static int __init light_init(struct ibm_init_struct *iibm) 5579 { 5580 int rc; 5581 5582 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5583 5584 if (tpacpi_is_ibm()) { 5585 TPACPI_ACPIHANDLE_INIT(ledb); 5586 TPACPI_ACPIHANDLE_INIT(lght); 5587 } 5588 TPACPI_ACPIHANDLE_INIT(cmos); 5589 5590 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5591 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5592 5593 if (tp_features.light) 5594 /* light status not supported on 5595 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5596 tp_features.light_status = 5597 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5598 5599 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5600 str_supported(tp_features.light), 5601 str_supported(tp_features.light_status)); 5602 5603 if (!tp_features.light) 5604 return -ENODEV; 5605 5606 rc = led_classdev_register(&tpacpi_pdev->dev, 5607 &tpacpi_led_thinklight.led_classdev); 5608 5609 if (rc < 0) { 5610 tp_features.light = 0; 5611 tp_features.light_status = 0; 5612 } else { 5613 rc = 0; 5614 } 5615 5616 return rc; 5617 } 5618 5619 static void light_exit(void) 5620 { 5621 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5622 } 5623 5624 static int light_read(struct seq_file *m) 5625 { 5626 int status; 5627 5628 if (!tp_features.light) { 5629 seq_printf(m, "status:\t\tnot supported\n"); 5630 } else if (!tp_features.light_status) { 5631 seq_printf(m, "status:\t\tunknown\n"); 5632 seq_printf(m, "commands:\ton, off\n"); 5633 } else { 5634 status = light_get_status(); 5635 if (status < 0) 5636 return status; 5637 seq_printf(m, "status:\t\t%s\n", str_on_off(status & BIT(0))); 5638 seq_printf(m, "commands:\ton, off\n"); 5639 } 5640 5641 return 0; 5642 } 5643 5644 static int light_write(char *buf) 5645 { 5646 char *cmd; 5647 int newstatus = 0; 5648 5649 if (!tp_features.light) 5650 return -ENODEV; 5651 5652 while ((cmd = strsep(&buf, ","))) { 5653 if (strstarts(cmd, "on")) { 5654 newstatus = 1; 5655 } else if (strstarts(cmd, "off")) { 5656 newstatus = 0; 5657 } else 5658 return -EINVAL; 5659 } 5660 5661 return light_set_status(newstatus); 5662 } 5663 5664 static struct ibm_struct light_driver_data = { 5665 .name = "light", 5666 .read = light_read, 5667 .write = light_write, 5668 .exit = light_exit, 5669 }; 5670 5671 /************************************************************************* 5672 * CMOS subdriver 5673 */ 5674 5675 /* sysfs cmos_command -------------------------------------------------- */ 5676 static ssize_t cmos_command_store(struct device *dev, 5677 struct device_attribute *attr, 5678 const char *buf, size_t count) 5679 { 5680 unsigned long cmos_cmd; 5681 int res; 5682 5683 if (parse_strtoul(buf, 21, &cmos_cmd)) 5684 return -EINVAL; 5685 5686 res = issue_thinkpad_cmos_command(cmos_cmd); 5687 return (res) ? res : count; 5688 } 5689 5690 static DEVICE_ATTR_WO(cmos_command); 5691 5692 static struct attribute *cmos_attributes[] = { 5693 &dev_attr_cmos_command.attr, 5694 NULL 5695 }; 5696 5697 static umode_t cmos_attr_is_visible(struct kobject *kobj, 5698 struct attribute *attr, int n) 5699 { 5700 return cmos_handle ? attr->mode : 0; 5701 } 5702 5703 static const struct attribute_group cmos_attr_group = { 5704 .is_visible = cmos_attr_is_visible, 5705 .attrs = cmos_attributes, 5706 }; 5707 5708 /* --------------------------------------------------------------------- */ 5709 5710 static int __init cmos_init(struct ibm_init_struct *iibm) 5711 { 5712 vdbg_printk(TPACPI_DBG_INIT, 5713 "initializing cmos commands subdriver\n"); 5714 5715 TPACPI_ACPIHANDLE_INIT(cmos); 5716 5717 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5718 str_supported(cmos_handle != NULL)); 5719 5720 return cmos_handle ? 0 : -ENODEV; 5721 } 5722 5723 static int cmos_read(struct seq_file *m) 5724 { 5725 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5726 R30, R31, T20-22, X20-21 */ 5727 if (!cmos_handle) 5728 seq_printf(m, "status:\t\tnot supported\n"); 5729 else { 5730 seq_printf(m, "status:\t\tsupported\n"); 5731 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5732 } 5733 5734 return 0; 5735 } 5736 5737 static int cmos_write(char *buf) 5738 { 5739 char *cmd; 5740 int cmos_cmd, res; 5741 5742 while ((cmd = strsep(&buf, ","))) { 5743 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5744 cmos_cmd >= 0 && cmos_cmd <= 21) { 5745 /* cmos_cmd set */ 5746 } else 5747 return -EINVAL; 5748 5749 res = issue_thinkpad_cmos_command(cmos_cmd); 5750 if (res) 5751 return res; 5752 } 5753 5754 return 0; 5755 } 5756 5757 static struct ibm_struct cmos_driver_data = { 5758 .name = "cmos", 5759 .read = cmos_read, 5760 .write = cmos_write, 5761 }; 5762 5763 /************************************************************************* 5764 * LED subdriver 5765 */ 5766 5767 enum led_access_mode { 5768 TPACPI_LED_NONE = 0, 5769 TPACPI_LED_570, /* 570 */ 5770 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5771 TPACPI_LED_NEW, /* all others */ 5772 }; 5773 5774 enum { /* For TPACPI_LED_OLD */ 5775 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5776 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5777 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5778 }; 5779 5780 static enum led_access_mode led_supported; 5781 5782 static acpi_handle led_handle; 5783 5784 #define TPACPI_LED_NUMLEDS 16 5785 static struct tpacpi_led_classdev *tpacpi_leds; 5786 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5787 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5788 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5789 "tpacpi::power", 5790 "tpacpi:orange:batt", 5791 "tpacpi:green:batt", 5792 "tpacpi::dock_active", 5793 "tpacpi::bay_active", 5794 "tpacpi::dock_batt", 5795 "tpacpi::unknown_led", 5796 "tpacpi::standby", 5797 "tpacpi::dock_status1", 5798 "tpacpi::dock_status2", 5799 "tpacpi::lid_logo_dot", 5800 "tpacpi::unknown_led3", 5801 "tpacpi::thinkvantage", 5802 }; 5803 #define TPACPI_SAFE_LEDS 0x1481U 5804 5805 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5806 { 5807 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5808 return false; 5809 #else 5810 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5811 #endif 5812 } 5813 5814 static int led_get_status(const unsigned int led) 5815 { 5816 int status; 5817 enum led_status_t led_s; 5818 5819 switch (led_supported) { 5820 case TPACPI_LED_570: 5821 if (!acpi_evalf(ec_handle, 5822 &status, "GLED", "dd", 1 << led)) 5823 return -EIO; 5824 led_s = (status == 0) ? 5825 TPACPI_LED_OFF : 5826 ((status == 1) ? 5827 TPACPI_LED_ON : 5828 TPACPI_LED_BLINK); 5829 tpacpi_led_state_cache[led] = led_s; 5830 return led_s; 5831 default: 5832 return -ENXIO; 5833 } 5834 5835 /* not reached */ 5836 } 5837 5838 static int led_set_status(const unsigned int led, 5839 const enum led_status_t ledstatus) 5840 { 5841 /* off, on, blink. Index is led_status_t */ 5842 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5843 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5844 5845 int rc = 0; 5846 5847 switch (led_supported) { 5848 case TPACPI_LED_570: 5849 /* 570 */ 5850 if (unlikely(led > 7)) 5851 return -EINVAL; 5852 if (unlikely(tpacpi_is_led_restricted(led))) 5853 return -EPERM; 5854 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5855 (1 << led), led_sled_arg1[ledstatus])) 5856 return -EIO; 5857 break; 5858 case TPACPI_LED_OLD: 5859 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5860 if (unlikely(led > 7)) 5861 return -EINVAL; 5862 if (unlikely(tpacpi_is_led_restricted(led))) 5863 return -EPERM; 5864 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5865 if (rc >= 0) 5866 rc = ec_write(TPACPI_LED_EC_HLBL, 5867 (ledstatus == TPACPI_LED_BLINK) << led); 5868 if (rc >= 0) 5869 rc = ec_write(TPACPI_LED_EC_HLCL, 5870 (ledstatus != TPACPI_LED_OFF) << led); 5871 break; 5872 case TPACPI_LED_NEW: 5873 /* all others */ 5874 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5875 return -EINVAL; 5876 if (unlikely(tpacpi_is_led_restricted(led))) 5877 return -EPERM; 5878 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5879 led, led_led_arg1[ledstatus])) 5880 return -EIO; 5881 break; 5882 default: 5883 return -ENXIO; 5884 } 5885 5886 if (!rc) 5887 tpacpi_led_state_cache[led] = ledstatus; 5888 5889 return rc; 5890 } 5891 5892 static int led_sysfs_set(struct led_classdev *led_cdev, 5893 enum led_brightness brightness) 5894 { 5895 struct tpacpi_led_classdev *data = container_of(led_cdev, 5896 struct tpacpi_led_classdev, led_classdev); 5897 enum led_status_t new_state; 5898 5899 if (brightness == LED_OFF) 5900 new_state = TPACPI_LED_OFF; 5901 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5902 new_state = TPACPI_LED_ON; 5903 else 5904 new_state = TPACPI_LED_BLINK; 5905 5906 return led_set_status(data->led, new_state); 5907 } 5908 5909 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5910 unsigned long *delay_on, unsigned long *delay_off) 5911 { 5912 struct tpacpi_led_classdev *data = container_of(led_cdev, 5913 struct tpacpi_led_classdev, led_classdev); 5914 5915 /* Can we choose the flash rate? */ 5916 if (*delay_on == 0 && *delay_off == 0) { 5917 /* yes. set them to the hardware blink rate (1 Hz) */ 5918 *delay_on = 500; /* ms */ 5919 *delay_off = 500; /* ms */ 5920 } else if ((*delay_on != 500) || (*delay_off != 500)) 5921 return -EINVAL; 5922 5923 return led_set_status(data->led, TPACPI_LED_BLINK); 5924 } 5925 5926 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5927 { 5928 int rc; 5929 5930 struct tpacpi_led_classdev *data = container_of(led_cdev, 5931 struct tpacpi_led_classdev, led_classdev); 5932 5933 rc = led_get_status(data->led); 5934 5935 if (rc == TPACPI_LED_OFF || rc < 0) 5936 rc = LED_OFF; /* no error handling in led class :( */ 5937 else 5938 rc = LED_FULL; 5939 5940 return rc; 5941 } 5942 5943 static void led_exit(void) 5944 { 5945 unsigned int i; 5946 5947 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5948 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5949 5950 kfree(tpacpi_leds); 5951 } 5952 5953 static int __init tpacpi_init_led(unsigned int led) 5954 { 5955 /* LEDs with no name don't get registered */ 5956 if (!tpacpi_led_names[led]) 5957 return 0; 5958 5959 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5960 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5961 if (led_supported == TPACPI_LED_570) 5962 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5963 5964 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5965 tpacpi_leds[led].led_classdev.flags = LED_RETAIN_AT_SHUTDOWN; 5966 tpacpi_leds[led].led = led; 5967 5968 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5969 } 5970 5971 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5972 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5973 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5974 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5975 5976 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5977 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5978 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5979 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5980 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5981 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5982 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5983 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5984 5985 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5986 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5987 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5988 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5989 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5990 5991 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5992 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5993 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5994 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5995 5996 /* (1) - may have excess leds enabled on MSB */ 5997 5998 /* Defaults (order matters, keep last, don't reorder!) */ 5999 { /* Lenovo */ 6000 .vendor = PCI_VENDOR_ID_LENOVO, 6001 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 6002 .quirks = 0x1fffU, 6003 }, 6004 { /* IBM ThinkPads with no EC version string */ 6005 .vendor = PCI_VENDOR_ID_IBM, 6006 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 6007 .quirks = 0x00ffU, 6008 }, 6009 { /* IBM ThinkPads with EC version string */ 6010 .vendor = PCI_VENDOR_ID_IBM, 6011 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 6012 .quirks = 0x00bfU, 6013 }, 6014 }; 6015 6016 static enum led_access_mode __init led_init_detect_mode(void) 6017 { 6018 acpi_status status; 6019 6020 if (tpacpi_is_ibm()) { 6021 /* 570 */ 6022 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 6023 if (ACPI_SUCCESS(status)) 6024 return TPACPI_LED_570; 6025 6026 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 6027 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 6028 if (ACPI_SUCCESS(status)) 6029 return TPACPI_LED_OLD; 6030 } 6031 6032 /* most others */ 6033 status = acpi_get_handle(ec_handle, "LED", &led_handle); 6034 if (ACPI_SUCCESS(status)) 6035 return TPACPI_LED_NEW; 6036 6037 /* R30, R31, and unknown firmwares */ 6038 led_handle = NULL; 6039 return TPACPI_LED_NONE; 6040 } 6041 6042 static int __init led_init(struct ibm_init_struct *iibm) 6043 { 6044 unsigned int i; 6045 int rc; 6046 unsigned long useful_leds; 6047 6048 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 6049 6050 led_supported = led_init_detect_mode(); 6051 6052 if (led_supported != TPACPI_LED_NONE) { 6053 useful_leds = tpacpi_check_quirks(led_useful_qtable, 6054 ARRAY_SIZE(led_useful_qtable)); 6055 6056 if (!useful_leds) { 6057 led_handle = NULL; 6058 led_supported = TPACPI_LED_NONE; 6059 } 6060 } 6061 6062 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 6063 str_supported(led_supported), led_supported); 6064 6065 if (led_supported == TPACPI_LED_NONE) 6066 return -ENODEV; 6067 6068 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), 6069 GFP_KERNEL); 6070 if (!tpacpi_leds) { 6071 pr_err("Out of memory for LED data\n"); 6072 return -ENOMEM; 6073 } 6074 6075 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 6076 tpacpi_leds[i].led = -1; 6077 6078 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 6079 rc = tpacpi_init_led(i); 6080 if (rc < 0) { 6081 led_exit(); 6082 return rc; 6083 } 6084 } 6085 } 6086 6087 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 6088 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 6089 #endif 6090 return 0; 6091 } 6092 6093 #define str_led_status(s) ((s) >= TPACPI_LED_BLINK ? "blinking" : str_on_off(s)) 6094 6095 static int led_read(struct seq_file *m) 6096 { 6097 if (!led_supported) { 6098 seq_printf(m, "status:\t\tnot supported\n"); 6099 return 0; 6100 } 6101 seq_printf(m, "status:\t\tsupported\n"); 6102 6103 if (led_supported == TPACPI_LED_570) { 6104 /* 570 */ 6105 int i, status; 6106 for (i = 0; i < 8; i++) { 6107 status = led_get_status(i); 6108 if (status < 0) 6109 return -EIO; 6110 seq_printf(m, "%d:\t\t%s\n", i, str_led_status(status)); 6111 } 6112 } 6113 6114 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 6115 6116 return 0; 6117 } 6118 6119 static int led_write(char *buf) 6120 { 6121 char *cmd; 6122 int led, rc; 6123 enum led_status_t s; 6124 6125 if (!led_supported) 6126 return -ENODEV; 6127 6128 while ((cmd = strsep(&buf, ","))) { 6129 if (sscanf(cmd, "%d", &led) != 1) 6130 return -EINVAL; 6131 6132 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 6133 return -ENODEV; 6134 6135 if (tpacpi_leds[led].led < 0) 6136 return -ENODEV; 6137 6138 if (strstr(cmd, "off")) { 6139 s = TPACPI_LED_OFF; 6140 } else if (strstr(cmd, "on")) { 6141 s = TPACPI_LED_ON; 6142 } else if (strstr(cmd, "blink")) { 6143 s = TPACPI_LED_BLINK; 6144 } else { 6145 return -EINVAL; 6146 } 6147 6148 rc = led_set_status(led, s); 6149 if (rc < 0) 6150 return rc; 6151 } 6152 6153 return 0; 6154 } 6155 6156 static struct ibm_struct led_driver_data = { 6157 .name = "led", 6158 .read = led_read, 6159 .write = led_write, 6160 .exit = led_exit, 6161 }; 6162 6163 /************************************************************************* 6164 * Beep subdriver 6165 */ 6166 6167 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6168 6169 #define TPACPI_BEEP_Q1 0x0001 6170 6171 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6172 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6173 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6174 }; 6175 6176 static int __init beep_init(struct ibm_init_struct *iibm) 6177 { 6178 unsigned long quirks; 6179 6180 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6181 6182 TPACPI_ACPIHANDLE_INIT(beep); 6183 6184 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6185 str_supported(beep_handle != NULL)); 6186 6187 quirks = tpacpi_check_quirks(beep_quirk_table, 6188 ARRAY_SIZE(beep_quirk_table)); 6189 6190 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6191 6192 return (beep_handle) ? 0 : -ENODEV; 6193 } 6194 6195 static int beep_read(struct seq_file *m) 6196 { 6197 if (!beep_handle) 6198 seq_printf(m, "status:\t\tnot supported\n"); 6199 else { 6200 seq_printf(m, "status:\t\tsupported\n"); 6201 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6202 } 6203 6204 return 0; 6205 } 6206 6207 static int beep_write(char *buf) 6208 { 6209 char *cmd; 6210 int beep_cmd; 6211 6212 if (!beep_handle) 6213 return -ENODEV; 6214 6215 while ((cmd = strsep(&buf, ","))) { 6216 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6217 beep_cmd >= 0 && beep_cmd <= 17) { 6218 /* beep_cmd set */ 6219 } else 6220 return -EINVAL; 6221 if (tp_features.beep_needs_two_args) { 6222 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6223 beep_cmd, 0)) 6224 return -EIO; 6225 } else { 6226 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6227 beep_cmd)) 6228 return -EIO; 6229 } 6230 } 6231 6232 return 0; 6233 } 6234 6235 static struct ibm_struct beep_driver_data = { 6236 .name = "beep", 6237 .read = beep_read, 6238 .write = beep_write, 6239 }; 6240 6241 /************************************************************************* 6242 * Thermal subdriver 6243 */ 6244 6245 enum thermal_access_mode { 6246 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6247 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6248 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6249 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6250 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6251 }; 6252 6253 enum { /* TPACPI_THERMAL_TPEC_* */ 6254 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6255 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6256 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */ 6257 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6258 6259 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6260 }; 6261 6262 6263 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6264 struct ibm_thermal_sensors_struct { 6265 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6266 }; 6267 6268 static enum thermal_access_mode thermal_read_mode; 6269 static bool thermal_use_labels; 6270 6271 /* idx is zero-based */ 6272 static int thermal_get_sensor(int idx, s32 *value) 6273 { 6274 int t; 6275 s8 tmp; 6276 char tmpi[5]; 6277 6278 t = TP_EC_THERMAL_TMP0; 6279 6280 switch (thermal_read_mode) { 6281 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6282 case TPACPI_THERMAL_TPEC_16: 6283 if (idx >= 8 && idx <= 15) { 6284 t = TP_EC_THERMAL_TMP8; 6285 idx -= 8; 6286 } 6287 #endif 6288 fallthrough; 6289 case TPACPI_THERMAL_TPEC_8: 6290 if (idx <= 7) { 6291 if (!acpi_ec_read(t + idx, &tmp)) 6292 return -EIO; 6293 *value = tmp * 1000; 6294 return 0; 6295 } 6296 break; 6297 6298 case TPACPI_THERMAL_ACPI_UPDT: 6299 if (idx <= 7) { 6300 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6301 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6302 return -EIO; 6303 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6304 return -EIO; 6305 *value = (t - 2732) * 100; 6306 return 0; 6307 } 6308 break; 6309 6310 case TPACPI_THERMAL_ACPI_TMP07: 6311 if (idx <= 7) { 6312 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6313 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6314 return -EIO; 6315 if (t > 127 || t < -127) 6316 t = TP_EC_THERMAL_TMP_NA; 6317 *value = t * 1000; 6318 return 0; 6319 } 6320 break; 6321 6322 case TPACPI_THERMAL_NONE: 6323 default: 6324 return -ENOSYS; 6325 } 6326 6327 return -EINVAL; 6328 } 6329 6330 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6331 { 6332 int res, i; 6333 int n; 6334 6335 n = 8; 6336 i = 0; 6337 6338 if (!s) 6339 return -EINVAL; 6340 6341 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6342 n = 16; 6343 6344 for (i = 0 ; i < n; i++) { 6345 res = thermal_get_sensor(i, &s->temp[i]); 6346 if (res) 6347 return res; 6348 } 6349 6350 return n; 6351 } 6352 6353 static void thermal_dump_all_sensors(void) 6354 { 6355 int n, i; 6356 struct ibm_thermal_sensors_struct t; 6357 6358 n = thermal_get_sensors(&t); 6359 if (n <= 0) 6360 return; 6361 6362 pr_notice("temperatures (Celsius):"); 6363 6364 for (i = 0; i < n; i++) { 6365 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6366 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6367 else 6368 pr_cont(" N/A"); 6369 } 6370 6371 pr_cont("\n"); 6372 } 6373 6374 /* sysfs temp##_input -------------------------------------------------- */ 6375 6376 static ssize_t thermal_temp_input_show(struct device *dev, 6377 struct device_attribute *attr, 6378 char *buf) 6379 { 6380 struct sensor_device_attribute *sensor_attr = 6381 to_sensor_dev_attr(attr); 6382 int idx = sensor_attr->index; 6383 s32 value; 6384 int res; 6385 6386 res = thermal_get_sensor(idx, &value); 6387 if (res) 6388 return res; 6389 if (value == TPACPI_THERMAL_SENSOR_NA) 6390 return -ENXIO; 6391 6392 return sysfs_emit(buf, "%d\n", value); 6393 } 6394 6395 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6396 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6397 thermal_temp_input_show, NULL, _idxB) 6398 6399 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6400 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6401 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6402 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6403 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6404 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6405 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6406 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6407 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6408 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6409 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6410 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6411 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6412 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6413 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6414 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6415 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6416 }; 6417 6418 #define THERMAL_ATTRS(X) \ 6419 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6420 6421 static struct attribute *thermal_temp_input_attr[] = { 6422 THERMAL_ATTRS(0), 6423 THERMAL_ATTRS(1), 6424 THERMAL_ATTRS(2), 6425 THERMAL_ATTRS(3), 6426 THERMAL_ATTRS(4), 6427 THERMAL_ATTRS(5), 6428 THERMAL_ATTRS(6), 6429 THERMAL_ATTRS(7), 6430 THERMAL_ATTRS(8), 6431 THERMAL_ATTRS(9), 6432 THERMAL_ATTRS(10), 6433 THERMAL_ATTRS(11), 6434 THERMAL_ATTRS(12), 6435 THERMAL_ATTRS(13), 6436 THERMAL_ATTRS(14), 6437 THERMAL_ATTRS(15), 6438 NULL 6439 }; 6440 6441 static umode_t thermal_attr_is_visible(struct kobject *kobj, 6442 struct attribute *attr, int n) 6443 { 6444 if (thermal_read_mode == TPACPI_THERMAL_NONE) 6445 return 0; 6446 6447 if (attr == THERMAL_ATTRS(8) || attr == THERMAL_ATTRS(9) || 6448 attr == THERMAL_ATTRS(10) || attr == THERMAL_ATTRS(11) || 6449 attr == THERMAL_ATTRS(12) || attr == THERMAL_ATTRS(13) || 6450 attr == THERMAL_ATTRS(14) || attr == THERMAL_ATTRS(15)) { 6451 if (thermal_read_mode != TPACPI_THERMAL_TPEC_16) 6452 return 0; 6453 } 6454 6455 return attr->mode; 6456 } 6457 6458 static const struct attribute_group thermal_attr_group = { 6459 .is_visible = thermal_attr_is_visible, 6460 .attrs = thermal_temp_input_attr, 6461 }; 6462 6463 #undef THERMAL_SENSOR_ATTR_TEMP 6464 #undef THERMAL_ATTRS 6465 6466 static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6467 { 6468 return sysfs_emit(buf, "CPU\n"); 6469 } 6470 static DEVICE_ATTR_RO(temp1_label); 6471 6472 static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6473 { 6474 return sysfs_emit(buf, "GPU\n"); 6475 } 6476 static DEVICE_ATTR_RO(temp2_label); 6477 6478 static struct attribute *temp_label_attributes[] = { 6479 &dev_attr_temp1_label.attr, 6480 &dev_attr_temp2_label.attr, 6481 NULL 6482 }; 6483 6484 static umode_t temp_label_attr_is_visible(struct kobject *kobj, 6485 struct attribute *attr, int n) 6486 { 6487 return thermal_use_labels ? attr->mode : 0; 6488 } 6489 6490 static const struct attribute_group temp_label_attr_group = { 6491 .is_visible = temp_label_attr_is_visible, 6492 .attrs = temp_label_attributes, 6493 }; 6494 6495 /* --------------------------------------------------------------------- */ 6496 6497 static int __init thermal_init(struct ibm_init_struct *iibm) 6498 { 6499 u8 t, ta1, ta2, ver = 0; 6500 int i; 6501 int acpi_tmp7; 6502 6503 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6504 6505 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6506 6507 if (thinkpad_id.ec_model) { 6508 /* 6509 * Direct EC access mode: sensors at registers 6510 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6511 * non-implemented, thermal sensors return 0x80 when 6512 * not available 6513 * The above rule is unfortunately flawed. This has been seen with 6514 * 0xC2 (power supply ID) causing thermal control problems. 6515 * The EC version can be determined by offset 0xEF and at least for 6516 * version 3 the Lenovo firmware team confirmed that registers 0xC0-0xC7 6517 * are not thermal registers. 6518 */ 6519 if (!acpi_ec_read(TP_EC_FUNCREV, &ver)) 6520 pr_warn("Thinkpad ACPI EC unable to access EC version\n"); 6521 6522 ta1 = ta2 = 0; 6523 for (i = 0; i < 8; i++) { 6524 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6525 ta1 |= t; 6526 } else { 6527 ta1 = 0; 6528 break; 6529 } 6530 if (ver < 3) { 6531 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6532 ta2 |= t; 6533 } else { 6534 ta1 = 0; 6535 break; 6536 } 6537 } 6538 } 6539 if (ta1 == 0) { 6540 /* This is sheer paranoia, but we handle it anyway */ 6541 if (acpi_tmp7) { 6542 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6543 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6544 } else { 6545 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6546 thermal_read_mode = TPACPI_THERMAL_NONE; 6547 } 6548 } else { 6549 if (ver >= 3) { 6550 thermal_read_mode = TPACPI_THERMAL_TPEC_8; 6551 thermal_use_labels = true; 6552 } else { 6553 thermal_read_mode = 6554 (ta2 != 0) ? 6555 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6556 } 6557 } 6558 } else if (acpi_tmp7) { 6559 if (tpacpi_is_ibm() && 6560 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6561 /* 600e/x, 770e, 770x */ 6562 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6563 } else { 6564 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6565 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6566 } 6567 } else { 6568 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6569 thermal_read_mode = TPACPI_THERMAL_NONE; 6570 } 6571 6572 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6573 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6574 thermal_read_mode); 6575 6576 return thermal_read_mode != TPACPI_THERMAL_NONE ? 0 : -ENODEV; 6577 } 6578 6579 static int thermal_read(struct seq_file *m) 6580 { 6581 int n, i; 6582 struct ibm_thermal_sensors_struct t; 6583 6584 n = thermal_get_sensors(&t); 6585 if (unlikely(n < 0)) 6586 return n; 6587 6588 seq_printf(m, "temperatures:\t"); 6589 6590 if (n > 0) { 6591 for (i = 0; i < (n - 1); i++) 6592 seq_printf(m, "%d ", t.temp[i] / 1000); 6593 seq_printf(m, "%d\n", t.temp[i] / 1000); 6594 } else 6595 seq_printf(m, "not supported\n"); 6596 6597 return 0; 6598 } 6599 6600 static struct ibm_struct thermal_driver_data = { 6601 .name = "thermal", 6602 .read = thermal_read, 6603 }; 6604 6605 /************************************************************************* 6606 * Backlight/brightness subdriver 6607 */ 6608 6609 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6610 6611 /* 6612 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6613 * CMOS NVRAM byte 0x5E, bits 0-3. 6614 * 6615 * EC HBRV (0x31) has the following layout 6616 * Bit 7: unknown function 6617 * Bit 6: unknown function 6618 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6619 * Bit 4: must be set to zero to avoid problems 6620 * Bit 3-0: backlight brightness level 6621 * 6622 * brightness_get_raw returns status data in the HBRV layout 6623 * 6624 * WARNING: The X61 has been verified to use HBRV for something else, so 6625 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6626 * testing on the very early *60 Lenovo models... 6627 */ 6628 6629 enum { 6630 TP_EC_BACKLIGHT = 0x31, 6631 6632 /* TP_EC_BACKLIGHT bitmasks */ 6633 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6634 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6635 TP_EC_BACKLIGHT_MAPSW = 0x20, 6636 }; 6637 6638 enum tpacpi_brightness_access_mode { 6639 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6640 TPACPI_BRGHT_MODE_EC, /* EC control */ 6641 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6642 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6643 TPACPI_BRGHT_MODE_MAX 6644 }; 6645 6646 static struct backlight_device *ibm_backlight_device; 6647 6648 static enum tpacpi_brightness_access_mode brightness_mode = 6649 TPACPI_BRGHT_MODE_MAX; 6650 6651 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6652 6653 static struct mutex brightness_mutex; 6654 6655 /* NVRAM brightness access, 6656 * call with brightness_mutex held! */ 6657 static unsigned int tpacpi_brightness_nvram_get(void) 6658 { 6659 u8 lnvram; 6660 6661 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6662 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6663 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6664 lnvram &= bright_maxlvl; 6665 6666 return lnvram; 6667 } 6668 6669 static void tpacpi_brightness_checkpoint_nvram(void) 6670 { 6671 u8 lec = 0; 6672 u8 b_nvram; 6673 6674 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6675 return; 6676 6677 vdbg_printk(TPACPI_DBG_BRGHT, 6678 "trying to checkpoint backlight level to NVRAM...\n"); 6679 6680 if (mutex_lock_killable(&brightness_mutex) < 0) 6681 return; 6682 6683 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6684 goto unlock; 6685 lec &= TP_EC_BACKLIGHT_LVLMSK; 6686 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6687 6688 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6689 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6690 /* NVRAM needs update */ 6691 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6692 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6693 b_nvram |= lec; 6694 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6695 dbg_printk(TPACPI_DBG_BRGHT, 6696 "updated NVRAM backlight level to %u (0x%02x)\n", 6697 (unsigned int) lec, (unsigned int) b_nvram); 6698 } else 6699 vdbg_printk(TPACPI_DBG_BRGHT, 6700 "NVRAM backlight level already is %u (0x%02x)\n", 6701 (unsigned int) lec, (unsigned int) b_nvram); 6702 6703 unlock: 6704 mutex_unlock(&brightness_mutex); 6705 } 6706 6707 6708 /* call with brightness_mutex held! */ 6709 static int tpacpi_brightness_get_raw(int *status) 6710 { 6711 u8 lec = 0; 6712 6713 switch (brightness_mode) { 6714 case TPACPI_BRGHT_MODE_UCMS_STEP: 6715 *status = tpacpi_brightness_nvram_get(); 6716 return 0; 6717 case TPACPI_BRGHT_MODE_EC: 6718 case TPACPI_BRGHT_MODE_ECNVRAM: 6719 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6720 return -EIO; 6721 *status = lec; 6722 return 0; 6723 default: 6724 return -ENXIO; 6725 } 6726 } 6727 6728 /* call with brightness_mutex held! */ 6729 /* do NOT call with illegal backlight level value */ 6730 static int tpacpi_brightness_set_ec(unsigned int value) 6731 { 6732 u8 lec = 0; 6733 6734 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6735 return -EIO; 6736 6737 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6738 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6739 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6740 return -EIO; 6741 6742 return 0; 6743 } 6744 6745 /* call with brightness_mutex held! */ 6746 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6747 { 6748 int cmos_cmd, inc; 6749 unsigned int current_value, i; 6750 6751 current_value = tpacpi_brightness_nvram_get(); 6752 6753 if (value == current_value) 6754 return 0; 6755 6756 cmos_cmd = (value > current_value) ? 6757 TP_CMOS_BRIGHTNESS_UP : 6758 TP_CMOS_BRIGHTNESS_DOWN; 6759 inc = (value > current_value) ? 1 : -1; 6760 6761 for (i = current_value; i != value; i += inc) 6762 if (issue_thinkpad_cmos_command(cmos_cmd)) 6763 return -EIO; 6764 6765 return 0; 6766 } 6767 6768 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6769 static int brightness_set(unsigned int value) 6770 { 6771 int res; 6772 6773 if (value > bright_maxlvl) 6774 return -EINVAL; 6775 6776 vdbg_printk(TPACPI_DBG_BRGHT, 6777 "set backlight level to %d\n", value); 6778 6779 res = mutex_lock_killable(&brightness_mutex); 6780 if (res < 0) 6781 return res; 6782 6783 switch (brightness_mode) { 6784 case TPACPI_BRGHT_MODE_EC: 6785 case TPACPI_BRGHT_MODE_ECNVRAM: 6786 res = tpacpi_brightness_set_ec(value); 6787 break; 6788 case TPACPI_BRGHT_MODE_UCMS_STEP: 6789 res = tpacpi_brightness_set_ucmsstep(value); 6790 break; 6791 default: 6792 res = -ENXIO; 6793 } 6794 6795 mutex_unlock(&brightness_mutex); 6796 return res; 6797 } 6798 6799 /* sysfs backlight class ----------------------------------------------- */ 6800 6801 static int brightness_update_status(struct backlight_device *bd) 6802 { 6803 int level = backlight_get_brightness(bd); 6804 6805 dbg_printk(TPACPI_DBG_BRGHT, 6806 "backlight: attempt to set level to %d\n", 6807 level); 6808 6809 /* it is the backlight class's job (caller) to handle 6810 * EINTR and other errors properly */ 6811 return brightness_set(level); 6812 } 6813 6814 static int brightness_get(struct backlight_device *bd) 6815 { 6816 int status, res; 6817 6818 res = mutex_lock_killable(&brightness_mutex); 6819 if (res < 0) 6820 return 0; 6821 6822 res = tpacpi_brightness_get_raw(&status); 6823 6824 mutex_unlock(&brightness_mutex); 6825 6826 if (res < 0) 6827 return 0; 6828 6829 return status & TP_EC_BACKLIGHT_LVLMSK; 6830 } 6831 6832 static void tpacpi_brightness_notify_change(void) 6833 { 6834 backlight_force_update(ibm_backlight_device, 6835 BACKLIGHT_UPDATE_HOTKEY); 6836 } 6837 6838 static const struct backlight_ops ibm_backlight_data = { 6839 .get_brightness = brightness_get, 6840 .update_status = brightness_update_status, 6841 }; 6842 6843 /* --------------------------------------------------------------------- */ 6844 6845 static int __init tpacpi_evaluate_bcl(struct acpi_device *adev, void *not_used) 6846 { 6847 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6848 union acpi_object *obj; 6849 acpi_status status; 6850 int rc; 6851 6852 status = acpi_evaluate_object(adev->handle, "_BCL", NULL, &buffer); 6853 if (ACPI_FAILURE(status)) 6854 return 0; 6855 6856 obj = buffer.pointer; 6857 if (!obj || obj->type != ACPI_TYPE_PACKAGE) { 6858 acpi_handle_info(adev->handle, 6859 "Unknown _BCL data, please report this to %s\n", 6860 TPACPI_MAIL); 6861 rc = 0; 6862 } else { 6863 rc = obj->package.count; 6864 } 6865 kfree(obj); 6866 6867 return rc; 6868 } 6869 6870 /* 6871 * Call _BCL method of video device. On some ThinkPads this will 6872 * switch the firmware to the ACPI brightness control mode. 6873 */ 6874 6875 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6876 { 6877 struct acpi_device *device; 6878 6879 device = acpi_fetch_acpi_dev(handle); 6880 if (!device) 6881 return 0; 6882 6883 return acpi_dev_for_each_child(device, tpacpi_evaluate_bcl, NULL); 6884 } 6885 6886 6887 /* 6888 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6889 */ 6890 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6891 { 6892 acpi_handle video_device; 6893 int bcl_levels = 0; 6894 6895 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6896 if (video_device) 6897 bcl_levels = tpacpi_query_bcl_levels(video_device); 6898 6899 tp_features.bright_acpimode = (bcl_levels > 0); 6900 6901 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6902 } 6903 6904 /* 6905 * These are only useful for models that have only one possibility 6906 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6907 * these quirks. 6908 */ 6909 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6910 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6911 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6912 6913 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6914 /* Models with ATI GPUs known to require ECNVRAM mode */ 6915 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6916 6917 /* Models with ATI GPUs that can use ECNVRAM */ 6918 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6919 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6920 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6921 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6922 6923 /* Models with Intel Extreme Graphics 2 */ 6924 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6925 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6926 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6927 6928 /* Models with Intel GMA900 */ 6929 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6930 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6931 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6932 }; 6933 6934 /* 6935 * Returns < 0 for error, otherwise sets tp_features.bright_* 6936 * and bright_maxlvl. 6937 */ 6938 static void __init tpacpi_detect_brightness_capabilities(void) 6939 { 6940 unsigned int b; 6941 6942 vdbg_printk(TPACPI_DBG_INIT, 6943 "detecting firmware brightness interface capabilities\n"); 6944 6945 /* we could run a quirks check here (same table used by 6946 * brightness_init) if needed */ 6947 6948 /* 6949 * We always attempt to detect acpi support, so as to switch 6950 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6951 * going to publish a backlight interface 6952 */ 6953 b = tpacpi_check_std_acpi_brightness_support(); 6954 switch (b) { 6955 case 16: 6956 bright_maxlvl = 15; 6957 break; 6958 case 8: 6959 case 0: 6960 bright_maxlvl = 7; 6961 break; 6962 default: 6963 tp_features.bright_unkfw = 1; 6964 bright_maxlvl = b - 1; 6965 } 6966 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6967 } 6968 6969 static int __init brightness_init(struct ibm_init_struct *iibm) 6970 { 6971 struct backlight_properties props; 6972 int b; 6973 unsigned long quirks; 6974 6975 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6976 6977 mutex_init(&brightness_mutex); 6978 6979 quirks = tpacpi_check_quirks(brightness_quirk_table, 6980 ARRAY_SIZE(brightness_quirk_table)); 6981 6982 /* tpacpi_detect_brightness_capabilities() must have run already */ 6983 6984 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6985 if (tp_features.bright_unkfw) 6986 return -ENODEV; 6987 6988 if (!brightness_enable) { 6989 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6990 "brightness support disabled by module parameter\n"); 6991 return -ENODEV; 6992 } 6993 6994 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6995 if (brightness_enable > 1) { 6996 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6997 return -ENODEV; 6998 } else if (brightness_enable == 1) { 6999 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 7000 return -ENODEV; 7001 } 7002 } else if (!tp_features.bright_acpimode) { 7003 pr_notice("ACPI backlight interface not available\n"); 7004 return -ENODEV; 7005 } 7006 7007 pr_notice("ACPI native brightness control enabled\n"); 7008 7009 /* 7010 * Check for module parameter bogosity, note that we 7011 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 7012 * able to detect "unspecified" 7013 */ 7014 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 7015 return -EINVAL; 7016 7017 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 7018 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 7019 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 7020 if (quirks & TPACPI_BRGHT_Q_EC) 7021 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 7022 else 7023 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 7024 7025 dbg_printk(TPACPI_DBG_BRGHT, 7026 "driver auto-selected brightness_mode=%d\n", 7027 brightness_mode); 7028 } 7029 7030 /* Safety */ 7031 if (!tpacpi_is_ibm() && 7032 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 7033 brightness_mode == TPACPI_BRGHT_MODE_EC)) 7034 return -EINVAL; 7035 7036 if (tpacpi_brightness_get_raw(&b) < 0) 7037 return -ENODEV; 7038 7039 memset(&props, 0, sizeof(struct backlight_properties)); 7040 props.type = BACKLIGHT_PLATFORM; 7041 props.max_brightness = bright_maxlvl; 7042 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 7043 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 7044 NULL, NULL, 7045 &ibm_backlight_data, 7046 &props); 7047 if (IS_ERR(ibm_backlight_device)) { 7048 int rc = PTR_ERR(ibm_backlight_device); 7049 ibm_backlight_device = NULL; 7050 pr_err("Could not register backlight device\n"); 7051 return rc; 7052 } 7053 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7054 "brightness is supported\n"); 7055 7056 if (quirks & TPACPI_BRGHT_Q_ASK) { 7057 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 7058 brightness_mode); 7059 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 7060 TPACPI_MAIL); 7061 } 7062 7063 /* Added by mistake in early 2007. Probably useless, but it could 7064 * be working around some unknown firmware problem where the value 7065 * read at startup doesn't match the real hardware state... so leave 7066 * it in place just in case */ 7067 backlight_update_status(ibm_backlight_device); 7068 7069 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7070 "brightness: registering brightness hotkeys as change notification\n"); 7071 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7072 | TP_ACPI_HKEY_BRGHTUP_MASK 7073 | TP_ACPI_HKEY_BRGHTDWN_MASK); 7074 return 0; 7075 } 7076 7077 static void brightness_suspend(void) 7078 { 7079 tpacpi_brightness_checkpoint_nvram(); 7080 } 7081 7082 static void brightness_shutdown(void) 7083 { 7084 tpacpi_brightness_checkpoint_nvram(); 7085 } 7086 7087 static void brightness_exit(void) 7088 { 7089 if (ibm_backlight_device) { 7090 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 7091 "calling backlight_device_unregister()\n"); 7092 backlight_device_unregister(ibm_backlight_device); 7093 } 7094 7095 tpacpi_brightness_checkpoint_nvram(); 7096 } 7097 7098 static int brightness_read(struct seq_file *m) 7099 { 7100 int level; 7101 7102 level = brightness_get(NULL); 7103 if (level < 0) { 7104 seq_printf(m, "level:\t\tunreadable\n"); 7105 } else { 7106 seq_printf(m, "level:\t\t%d\n", level); 7107 seq_printf(m, "commands:\tup, down\n"); 7108 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7109 bright_maxlvl); 7110 } 7111 7112 return 0; 7113 } 7114 7115 static int brightness_write(char *buf) 7116 { 7117 int level; 7118 int rc; 7119 char *cmd; 7120 7121 level = brightness_get(NULL); 7122 if (level < 0) 7123 return level; 7124 7125 while ((cmd = strsep(&buf, ","))) { 7126 if (strstarts(cmd, "up")) { 7127 if (level < bright_maxlvl) 7128 level++; 7129 } else if (strstarts(cmd, "down")) { 7130 if (level > 0) 7131 level--; 7132 } else if (sscanf(cmd, "level %d", &level) == 1 && 7133 level >= 0 && level <= bright_maxlvl) { 7134 /* new level set */ 7135 } else 7136 return -EINVAL; 7137 } 7138 7139 tpacpi_disclose_usertask("procfs brightness", 7140 "set level to %d\n", level); 7141 7142 /* 7143 * Now we know what the final level should be, so we try to set it. 7144 * Doing it this way makes the syscall restartable in case of EINTR 7145 */ 7146 rc = brightness_set(level); 7147 if (!rc && ibm_backlight_device) 7148 backlight_force_update(ibm_backlight_device, 7149 BACKLIGHT_UPDATE_SYSFS); 7150 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7151 } 7152 7153 static struct ibm_struct brightness_driver_data = { 7154 .name = "brightness", 7155 .read = brightness_read, 7156 .write = brightness_write, 7157 .exit = brightness_exit, 7158 .suspend = brightness_suspend, 7159 .shutdown = brightness_shutdown, 7160 }; 7161 7162 /************************************************************************* 7163 * Volume subdriver 7164 */ 7165 7166 /* 7167 * IBM ThinkPads have a simple volume controller with MUTE gating. 7168 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7169 * 7170 * Since the *61 series (and probably also the later *60 series), Lenovo 7171 * ThinkPads only implement the MUTE gate. 7172 * 7173 * EC register 0x30 7174 * Bit 6: MUTE (1 mutes sound) 7175 * Bit 3-0: Volume 7176 * Other bits should be zero as far as we know. 7177 * 7178 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7179 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7180 * such as bit 7 which is used to detect repeated presses of MUTE, 7181 * and we leave them unchanged. 7182 * 7183 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7184 * in response to user input. Unfortunately, this rarely works well. 7185 * The laptop changes the state of its internal MUTE gate and, on some 7186 * models, sends KEY_MUTE, causing any user code that responds to the 7187 * mute button to get confused. The hardware MUTE gate is also 7188 * unnecessary, since user code can handle the mute button without 7189 * kernel or EC help. 7190 * 7191 * To avoid confusing userspace, we simply disable all EC-based mute 7192 * and volume controls when possible. 7193 */ 7194 7195 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7196 7197 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7198 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7199 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7200 7201 #if SNDRV_CARDS <= 32 7202 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7203 #else 7204 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7205 #endif 7206 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7207 static char *alsa_id = "ThinkPadEC"; 7208 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7209 7210 struct tpacpi_alsa_data { 7211 struct snd_card *card; 7212 struct snd_ctl_elem_id *ctl_mute_id; 7213 struct snd_ctl_elem_id *ctl_vol_id; 7214 }; 7215 7216 static struct snd_card *alsa_card; 7217 7218 enum { 7219 TP_EC_AUDIO = 0x30, 7220 7221 /* TP_EC_AUDIO bits */ 7222 TP_EC_AUDIO_MUTESW = 6, 7223 7224 /* TP_EC_AUDIO bitmasks */ 7225 TP_EC_AUDIO_LVL_MSK = 0x0F, 7226 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7227 7228 /* Maximum volume */ 7229 TP_EC_VOLUME_MAX = 14, 7230 }; 7231 7232 enum tpacpi_volume_access_mode { 7233 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7234 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7235 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7236 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7237 TPACPI_VOL_MODE_MAX 7238 }; 7239 7240 enum tpacpi_volume_capabilities { 7241 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7242 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7243 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7244 TPACPI_VOL_CAP_MAX 7245 }; 7246 7247 enum tpacpi_mute_btn_mode { 7248 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7249 /* We don't know what mode 1 is. */ 7250 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7251 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7252 }; 7253 7254 static enum tpacpi_volume_access_mode volume_mode = 7255 TPACPI_VOL_MODE_MAX; 7256 7257 static enum tpacpi_volume_capabilities volume_capabilities; 7258 static bool volume_control_allowed; 7259 static bool software_mute_requested = true; 7260 static bool software_mute_active; 7261 static int software_mute_orig_mode; 7262 7263 /* 7264 * Used to syncronize writers to TP_EC_AUDIO and 7265 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7266 */ 7267 static struct mutex volume_mutex; 7268 7269 static void tpacpi_volume_checkpoint_nvram(void) 7270 { 7271 u8 lec = 0; 7272 u8 b_nvram; 7273 u8 ec_mask; 7274 7275 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7276 return; 7277 if (!volume_control_allowed) 7278 return; 7279 if (software_mute_active) 7280 return; 7281 7282 vdbg_printk(TPACPI_DBG_MIXER, 7283 "trying to checkpoint mixer state to NVRAM...\n"); 7284 7285 if (tp_features.mixer_no_level_control) 7286 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7287 else 7288 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7289 7290 if (mutex_lock_killable(&volume_mutex) < 0) 7291 return; 7292 7293 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7294 goto unlock; 7295 lec &= ec_mask; 7296 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7297 7298 if (lec != (b_nvram & ec_mask)) { 7299 /* NVRAM needs update */ 7300 b_nvram &= ~ec_mask; 7301 b_nvram |= lec; 7302 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7303 dbg_printk(TPACPI_DBG_MIXER, 7304 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7305 (unsigned int) lec, (unsigned int) b_nvram); 7306 } else { 7307 vdbg_printk(TPACPI_DBG_MIXER, 7308 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7309 (unsigned int) lec, (unsigned int) b_nvram); 7310 } 7311 7312 unlock: 7313 mutex_unlock(&volume_mutex); 7314 } 7315 7316 static int volume_get_status_ec(u8 *status) 7317 { 7318 u8 s; 7319 7320 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7321 return -EIO; 7322 7323 *status = s; 7324 7325 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7326 7327 return 0; 7328 } 7329 7330 static int volume_get_status(u8 *status) 7331 { 7332 return volume_get_status_ec(status); 7333 } 7334 7335 static int volume_set_status_ec(const u8 status) 7336 { 7337 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7338 return -EIO; 7339 7340 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7341 7342 /* 7343 * On X200s, and possibly on others, it can take a while for 7344 * reads to become correct. 7345 */ 7346 msleep(1); 7347 7348 return 0; 7349 } 7350 7351 static int volume_set_status(const u8 status) 7352 { 7353 return volume_set_status_ec(status); 7354 } 7355 7356 /* returns < 0 on error, 0 on no change, 1 on change */ 7357 static int __volume_set_mute_ec(const bool mute) 7358 { 7359 int rc; 7360 u8 s, n; 7361 7362 if (mutex_lock_killable(&volume_mutex) < 0) 7363 return -EINTR; 7364 7365 rc = volume_get_status_ec(&s); 7366 if (rc) 7367 goto unlock; 7368 7369 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7370 s & ~TP_EC_AUDIO_MUTESW_MSK; 7371 7372 if (n != s) { 7373 rc = volume_set_status_ec(n); 7374 if (!rc) 7375 rc = 1; 7376 } 7377 7378 unlock: 7379 mutex_unlock(&volume_mutex); 7380 return rc; 7381 } 7382 7383 static int volume_alsa_set_mute(const bool mute) 7384 { 7385 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7386 (mute) ? "" : "un"); 7387 return __volume_set_mute_ec(mute); 7388 } 7389 7390 static int volume_set_mute(const bool mute) 7391 { 7392 int rc; 7393 7394 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7395 (mute) ? "" : "un"); 7396 7397 rc = __volume_set_mute_ec(mute); 7398 return (rc < 0) ? rc : 0; 7399 } 7400 7401 /* returns < 0 on error, 0 on no change, 1 on change */ 7402 static int __volume_set_volume_ec(const u8 vol) 7403 { 7404 int rc; 7405 u8 s, n; 7406 7407 if (vol > TP_EC_VOLUME_MAX) 7408 return -EINVAL; 7409 7410 if (mutex_lock_killable(&volume_mutex) < 0) 7411 return -EINTR; 7412 7413 rc = volume_get_status_ec(&s); 7414 if (rc) 7415 goto unlock; 7416 7417 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7418 7419 if (n != s) { 7420 rc = volume_set_status_ec(n); 7421 if (!rc) 7422 rc = 1; 7423 } 7424 7425 unlock: 7426 mutex_unlock(&volume_mutex); 7427 return rc; 7428 } 7429 7430 static int volume_set_software_mute(bool startup) 7431 { 7432 int result; 7433 7434 if (!tpacpi_is_lenovo()) 7435 return -ENODEV; 7436 7437 if (startup) { 7438 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7439 "HAUM", "qd")) 7440 return -EIO; 7441 7442 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7443 "Initial HAUM setting was %d\n", 7444 software_mute_orig_mode); 7445 } 7446 7447 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7448 (int)TP_EC_MUTE_BTN_NONE)) 7449 return -EIO; 7450 7451 if (result != TP_EC_MUTE_BTN_NONE) 7452 pr_warn("Unexpected SAUM result %d\n", 7453 result); 7454 7455 /* 7456 * In software mute mode, the standard codec controls take 7457 * precendence, so we unmute the ThinkPad HW switch at 7458 * startup. Just on case there are SAUM-capable ThinkPads 7459 * with level controls, set max HW volume as well. 7460 */ 7461 if (tp_features.mixer_no_level_control) 7462 result = volume_set_mute(false); 7463 else 7464 result = volume_set_status(TP_EC_VOLUME_MAX); 7465 7466 if (result != 0) 7467 pr_warn("Failed to unmute the HW mute switch\n"); 7468 7469 return 0; 7470 } 7471 7472 static void volume_exit_software_mute(void) 7473 { 7474 int r; 7475 7476 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7477 || r != software_mute_orig_mode) 7478 pr_warn("Failed to restore mute mode\n"); 7479 } 7480 7481 static int volume_alsa_set_volume(const u8 vol) 7482 { 7483 dbg_printk(TPACPI_DBG_MIXER, 7484 "ALSA: trying to set volume level to %hu\n", vol); 7485 return __volume_set_volume_ec(vol); 7486 } 7487 7488 static void volume_alsa_notify_change(void) 7489 { 7490 struct tpacpi_alsa_data *d; 7491 7492 if (alsa_card && alsa_card->private_data) { 7493 d = alsa_card->private_data; 7494 if (d->ctl_mute_id) 7495 snd_ctl_notify(alsa_card, 7496 SNDRV_CTL_EVENT_MASK_VALUE, 7497 d->ctl_mute_id); 7498 if (d->ctl_vol_id) 7499 snd_ctl_notify(alsa_card, 7500 SNDRV_CTL_EVENT_MASK_VALUE, 7501 d->ctl_vol_id); 7502 } 7503 } 7504 7505 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7506 struct snd_ctl_elem_info *uinfo) 7507 { 7508 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7509 uinfo->count = 1; 7510 uinfo->value.integer.min = 0; 7511 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7512 return 0; 7513 } 7514 7515 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7516 struct snd_ctl_elem_value *ucontrol) 7517 { 7518 u8 s; 7519 int rc; 7520 7521 rc = volume_get_status(&s); 7522 if (rc < 0) 7523 return rc; 7524 7525 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7526 return 0; 7527 } 7528 7529 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7530 struct snd_ctl_elem_value *ucontrol) 7531 { 7532 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7533 ucontrol->value.integer.value[0]); 7534 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7535 } 7536 7537 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7538 7539 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7540 struct snd_ctl_elem_value *ucontrol) 7541 { 7542 u8 s; 7543 int rc; 7544 7545 rc = volume_get_status(&s); 7546 if (rc < 0) 7547 return rc; 7548 7549 ucontrol->value.integer.value[0] = 7550 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7551 return 0; 7552 } 7553 7554 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7555 struct snd_ctl_elem_value *ucontrol) 7556 { 7557 tpacpi_disclose_usertask("ALSA", "%smute\n", 7558 ucontrol->value.integer.value[0] ? 7559 "un" : ""); 7560 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7561 } 7562 7563 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7564 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7565 .name = "Console Playback Volume", 7566 .index = 0, 7567 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7568 .info = volume_alsa_vol_info, 7569 .get = volume_alsa_vol_get, 7570 }; 7571 7572 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7573 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7574 .name = "Console Playback Switch", 7575 .index = 0, 7576 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7577 .info = volume_alsa_mute_info, 7578 .get = volume_alsa_mute_get, 7579 }; 7580 7581 static void volume_suspend(void) 7582 { 7583 tpacpi_volume_checkpoint_nvram(); 7584 } 7585 7586 static void volume_resume(void) 7587 { 7588 if (software_mute_active) { 7589 if (volume_set_software_mute(false) < 0) 7590 pr_warn("Failed to restore software mute\n"); 7591 } else { 7592 volume_alsa_notify_change(); 7593 } 7594 } 7595 7596 static void volume_shutdown(void) 7597 { 7598 tpacpi_volume_checkpoint_nvram(); 7599 } 7600 7601 static void volume_exit(void) 7602 { 7603 if (alsa_card) { 7604 snd_card_free(alsa_card); 7605 alsa_card = NULL; 7606 } 7607 7608 tpacpi_volume_checkpoint_nvram(); 7609 7610 if (software_mute_active) 7611 volume_exit_software_mute(); 7612 } 7613 7614 static int __init volume_create_alsa_mixer(void) 7615 { 7616 struct snd_card *card; 7617 struct tpacpi_alsa_data *data; 7618 struct snd_kcontrol *ctl_vol; 7619 struct snd_kcontrol *ctl_mute; 7620 int rc; 7621 7622 rc = snd_card_new(&tpacpi_pdev->dev, 7623 alsa_index, alsa_id, THIS_MODULE, 7624 sizeof(struct tpacpi_alsa_data), &card); 7625 if (rc < 0 || !card) { 7626 pr_err("Failed to create ALSA card structures: %d\n", rc); 7627 return -ENODEV; 7628 } 7629 7630 BUG_ON(!card->private_data); 7631 data = card->private_data; 7632 data->card = card; 7633 7634 strscpy(card->driver, TPACPI_ALSA_DRVNAME, 7635 sizeof(card->driver)); 7636 strscpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7637 sizeof(card->shortname)); 7638 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7639 (thinkpad_id.ec_version_str) ? 7640 thinkpad_id.ec_version_str : "(unknown)"); 7641 snprintf(card->longname, sizeof(card->longname), 7642 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7643 (thinkpad_id.ec_version_str) ? 7644 thinkpad_id.ec_version_str : "unknown"); 7645 7646 if (volume_control_allowed) { 7647 volume_alsa_control_vol.put = volume_alsa_vol_put; 7648 volume_alsa_control_vol.access = 7649 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7650 7651 volume_alsa_control_mute.put = volume_alsa_mute_put; 7652 volume_alsa_control_mute.access = 7653 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7654 } 7655 7656 if (!tp_features.mixer_no_level_control) { 7657 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7658 rc = snd_ctl_add(card, ctl_vol); 7659 if (rc < 0) { 7660 pr_err("Failed to create ALSA volume control: %d\n", 7661 rc); 7662 goto err_exit; 7663 } 7664 data->ctl_vol_id = &ctl_vol->id; 7665 } 7666 7667 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7668 rc = snd_ctl_add(card, ctl_mute); 7669 if (rc < 0) { 7670 pr_err("Failed to create ALSA mute control: %d\n", rc); 7671 goto err_exit; 7672 } 7673 data->ctl_mute_id = &ctl_mute->id; 7674 7675 rc = snd_card_register(card); 7676 if (rc < 0) { 7677 pr_err("Failed to register ALSA card: %d\n", rc); 7678 goto err_exit; 7679 } 7680 7681 alsa_card = card; 7682 return 0; 7683 7684 err_exit: 7685 snd_card_free(card); 7686 return -ENODEV; 7687 } 7688 7689 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7690 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7691 7692 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7693 /* Whitelist volume level on all IBM by default */ 7694 { .vendor = PCI_VENDOR_ID_IBM, 7695 .bios = TPACPI_MATCH_ANY, 7696 .ec = TPACPI_MATCH_ANY, 7697 .quirks = TPACPI_VOL_Q_LEVEL }, 7698 7699 /* Lenovo models with volume control (needs confirmation) */ 7700 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7701 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7702 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7703 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7704 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7705 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7706 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7707 7708 /* Whitelist mute-only on all Lenovo by default */ 7709 { .vendor = PCI_VENDOR_ID_LENOVO, 7710 .bios = TPACPI_MATCH_ANY, 7711 .ec = TPACPI_MATCH_ANY, 7712 .quirks = TPACPI_VOL_Q_MUTEONLY } 7713 }; 7714 7715 static int __init volume_init(struct ibm_init_struct *iibm) 7716 { 7717 unsigned long quirks; 7718 int rc; 7719 7720 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7721 7722 mutex_init(&volume_mutex); 7723 7724 /* 7725 * Check for module parameter bogosity, note that we 7726 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7727 * able to detect "unspecified" 7728 */ 7729 if (volume_mode > TPACPI_VOL_MODE_MAX) 7730 return -EINVAL; 7731 7732 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7733 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7734 TPACPI_MAIL); 7735 return -ENODEV; 7736 } 7737 7738 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7739 return -EINVAL; 7740 7741 /* 7742 * The ALSA mixer is our primary interface. 7743 * When disabled, don't install the subdriver at all 7744 */ 7745 if (!alsa_enable) { 7746 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7747 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7748 return -ENODEV; 7749 } 7750 7751 quirks = tpacpi_check_quirks(volume_quirk_table, 7752 ARRAY_SIZE(volume_quirk_table)); 7753 7754 switch (volume_capabilities) { 7755 case TPACPI_VOL_CAP_AUTO: 7756 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7757 tp_features.mixer_no_level_control = 1; 7758 else if (quirks & TPACPI_VOL_Q_LEVEL) 7759 tp_features.mixer_no_level_control = 0; 7760 else 7761 return -ENODEV; /* no mixer */ 7762 break; 7763 case TPACPI_VOL_CAP_VOLMUTE: 7764 tp_features.mixer_no_level_control = 0; 7765 break; 7766 case TPACPI_VOL_CAP_MUTEONLY: 7767 tp_features.mixer_no_level_control = 1; 7768 break; 7769 default: 7770 return -ENODEV; 7771 } 7772 7773 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7774 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7775 "using user-supplied volume_capabilities=%d\n", 7776 volume_capabilities); 7777 7778 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7779 volume_mode == TPACPI_VOL_MODE_MAX) { 7780 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7781 7782 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7783 "driver auto-selected volume_mode=%d\n", 7784 volume_mode); 7785 } else { 7786 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7787 "using user-supplied volume_mode=%d\n", 7788 volume_mode); 7789 } 7790 7791 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7792 "mute is supported, volume control is %s\n", 7793 str_supported(!tp_features.mixer_no_level_control)); 7794 7795 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7796 software_mute_active = true; 7797 } else { 7798 rc = volume_create_alsa_mixer(); 7799 if (rc) { 7800 pr_err("Could not create the ALSA mixer interface\n"); 7801 return rc; 7802 } 7803 7804 pr_info("Console audio control enabled, mode: %s\n", 7805 (volume_control_allowed) ? 7806 "override (read/write)" : 7807 "monitor (read only)"); 7808 } 7809 7810 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7811 "registering volume hotkeys as change notification\n"); 7812 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7813 | TP_ACPI_HKEY_VOLUP_MASK 7814 | TP_ACPI_HKEY_VOLDWN_MASK 7815 | TP_ACPI_HKEY_MUTE_MASK); 7816 7817 return 0; 7818 } 7819 7820 static int volume_read(struct seq_file *m) 7821 { 7822 u8 status; 7823 7824 if (volume_get_status(&status) < 0) { 7825 seq_printf(m, "level:\t\tunreadable\n"); 7826 } else { 7827 if (tp_features.mixer_no_level_control) 7828 seq_printf(m, "level:\t\tunsupported\n"); 7829 else 7830 seq_printf(m, "level:\t\t%d\n", 7831 status & TP_EC_AUDIO_LVL_MSK); 7832 7833 seq_printf(m, "mute:\t\t%s\n", str_on_off(status & BIT(TP_EC_AUDIO_MUTESW))); 7834 7835 if (volume_control_allowed) { 7836 seq_printf(m, "commands:\tunmute, mute\n"); 7837 if (!tp_features.mixer_no_level_control) { 7838 seq_printf(m, "commands:\tup, down\n"); 7839 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7840 TP_EC_VOLUME_MAX); 7841 } 7842 } 7843 } 7844 7845 return 0; 7846 } 7847 7848 static int volume_write(char *buf) 7849 { 7850 u8 s; 7851 u8 new_level, new_mute; 7852 int l; 7853 char *cmd; 7854 int rc; 7855 7856 /* 7857 * We do allow volume control at driver startup, so that the 7858 * user can set initial state through the volume=... parameter hack. 7859 */ 7860 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7861 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7862 tp_warned.volume_ctrl_forbidden = 1; 7863 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7864 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7865 } 7866 return -EPERM; 7867 } 7868 7869 rc = volume_get_status(&s); 7870 if (rc < 0) 7871 return rc; 7872 7873 new_level = s & TP_EC_AUDIO_LVL_MSK; 7874 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7875 7876 while ((cmd = strsep(&buf, ","))) { 7877 if (!tp_features.mixer_no_level_control) { 7878 if (strstarts(cmd, "up")) { 7879 if (new_mute) 7880 new_mute = 0; 7881 else if (new_level < TP_EC_VOLUME_MAX) 7882 new_level++; 7883 continue; 7884 } else if (strstarts(cmd, "down")) { 7885 if (new_mute) 7886 new_mute = 0; 7887 else if (new_level > 0) 7888 new_level--; 7889 continue; 7890 } else if (sscanf(cmd, "level %u", &l) == 1 && 7891 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7892 new_level = l; 7893 continue; 7894 } 7895 } 7896 if (strstarts(cmd, "mute")) 7897 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7898 else if (strstarts(cmd, "unmute")) 7899 new_mute = 0; 7900 else 7901 return -EINVAL; 7902 } 7903 7904 if (tp_features.mixer_no_level_control) { 7905 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7906 new_mute ? "" : "un"); 7907 rc = volume_set_mute(!!new_mute); 7908 } else { 7909 tpacpi_disclose_usertask("procfs volume", 7910 "%smute and set level to %d\n", 7911 new_mute ? "" : "un", new_level); 7912 rc = volume_set_status(new_mute | new_level); 7913 } 7914 volume_alsa_notify_change(); 7915 7916 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7917 } 7918 7919 static struct ibm_struct volume_driver_data = { 7920 .name = "volume", 7921 .read = volume_read, 7922 .write = volume_write, 7923 .exit = volume_exit, 7924 .suspend = volume_suspend, 7925 .resume = volume_resume, 7926 .shutdown = volume_shutdown, 7927 }; 7928 7929 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7930 7931 #define alsa_card NULL 7932 7933 static inline void volume_alsa_notify_change(void) 7934 { 7935 } 7936 7937 static int __init volume_init(struct ibm_init_struct *iibm) 7938 { 7939 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7940 7941 return -ENODEV; 7942 } 7943 7944 static struct ibm_struct volume_driver_data = { 7945 .name = "volume", 7946 }; 7947 7948 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7949 7950 /************************************************************************* 7951 * Fan subdriver 7952 */ 7953 7954 /* 7955 * FAN ACCESS MODES 7956 * 7957 * TPACPI_FAN_RD_ACPI_GFAN: 7958 * ACPI GFAN method: returns fan level 7959 * 7960 * see TPACPI_FAN_WR_ACPI_SFAN 7961 * EC 0x2f (HFSP) not available if GFAN exists 7962 * 7963 * TPACPI_FAN_WR_ACPI_SFAN: 7964 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7965 * 7966 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7967 * it for writing. 7968 * 7969 * TPACPI_FAN_WR_TPEC: 7970 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7971 * Supported on almost all ThinkPads 7972 * 7973 * Fan speed changes of any sort (including those caused by the 7974 * disengaged mode) are usually done slowly by the firmware as the 7975 * maximum amount of fan duty cycle change per second seems to be 7976 * limited. 7977 * 7978 * Reading is not available if GFAN exists. 7979 * Writing is not available if SFAN exists. 7980 * 7981 * Bits 7982 * 7 automatic mode engaged; 7983 * (default operation mode of the ThinkPad) 7984 * fan level is ignored in this mode. 7985 * 6 full speed mode (takes precedence over bit 7); 7986 * not available on all thinkpads. May disable 7987 * the tachometer while the fan controller ramps up 7988 * the speed (which can take up to a few *minutes*). 7989 * Speeds up fan to 100% duty-cycle, which is far above 7990 * the standard RPM levels. It is not impossible that 7991 * it could cause hardware damage. 7992 * 5-3 unused in some models. Extra bits for fan level 7993 * in others, but still useless as all values above 7994 * 7 map to the same speed as level 7 in these models. 7995 * 2-0 fan level (0..7 usually) 7996 * 0x00 = stop 7997 * 0x07 = max (set when temperatures critical) 7998 * Some ThinkPads may have other levels, see 7999 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 8000 * 8001 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 8002 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 8003 * does so, its initial value is meaningless (0x07). 8004 * 8005 * For firmware bugs, refer to: 8006 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 8007 * 8008 * ---- 8009 * 8010 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 8011 * Main fan tachometer reading (in RPM) 8012 * 8013 * This register is present on all ThinkPads with a new-style EC, and 8014 * it is known not to be present on the A21m/e, and T22, as there is 8015 * something else in offset 0x84 according to the ACPI DSDT. Other 8016 * ThinkPads from this same time period (and earlier) probably lack the 8017 * tachometer as well. 8018 * 8019 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 8020 * was never fixed by IBM to report the EC firmware version string 8021 * probably support the tachometer (like the early X models), so 8022 * detecting it is quite hard. We need more data to know for sure. 8023 * 8024 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 8025 * might result. 8026 * 8027 * FIRMWARE BUG: may go stale while the EC is switching to full speed 8028 * mode. 8029 * 8030 * For firmware bugs, refer to: 8031 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 8032 * 8033 * ---- 8034 * 8035 * ThinkPad EC register 0x31 bit 0 (only on select models) 8036 * 8037 * When bit 0 of EC register 0x31 is zero, the tachometer registers 8038 * show the speed of the main fan. When bit 0 of EC register 0x31 8039 * is one, the tachometer registers show the speed of the auxiliary 8040 * fan. 8041 * 8042 * Fan control seems to affect both fans, regardless of the state 8043 * of this bit. 8044 * 8045 * So far, only the firmware for the X60/X61 non-tablet versions 8046 * seem to support this (firmware TP-7M). 8047 * 8048 * TPACPI_FAN_WR_ACPI_FANS: 8049 * ThinkPad X31, X40, X41. Not available in the X60. 8050 * 8051 * FANS ACPI handle: takes three arguments: low speed, medium speed, 8052 * high speed. ACPI DSDT seems to map these three speeds to levels 8053 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 8054 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 8055 * 8056 * The speeds are stored on handles 8057 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 8058 * 8059 * There are three default speed sets, accessible as handles: 8060 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 8061 * 8062 * ACPI DSDT switches which set is in use depending on various 8063 * factors. 8064 * 8065 * TPACPI_FAN_WR_TPEC is also available and should be used to 8066 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 8067 * but the ACPI tables just mention level 7. 8068 */ 8069 8070 enum { /* Fan control constants */ 8071 fan_status_offset = 0x2f, /* EC register 0x2f */ 8072 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 8073 * 0x84 must be read before 0x85 */ 8074 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 8075 bit 0 selects which fan is active */ 8076 8077 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 8078 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 8079 8080 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 8081 }; 8082 8083 enum fan_status_access_mode { 8084 TPACPI_FAN_NONE = 0, /* No fan status or control */ 8085 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 8086 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 8087 }; 8088 8089 enum fan_control_access_mode { 8090 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 8091 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 8092 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 8093 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 8094 }; 8095 8096 enum fan_control_commands { 8097 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 8098 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 8099 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 8100 * and also watchdog cmd */ 8101 }; 8102 8103 static bool fan_control_allowed; 8104 8105 static enum fan_status_access_mode fan_status_access_mode; 8106 static enum fan_control_access_mode fan_control_access_mode; 8107 static enum fan_control_commands fan_control_commands; 8108 8109 static u8 fan_control_initial_status; 8110 static u8 fan_control_desired_level; 8111 static u8 fan_control_resume_level; 8112 static int fan_watchdog_maxinterval; 8113 8114 static struct mutex fan_mutex; 8115 8116 static void fan_watchdog_fire(struct work_struct *ignored); 8117 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 8118 8119 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 8120 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 8121 "\\FSPD", /* 600e/x, 770e, 770x */ 8122 ); /* all others */ 8123 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8124 "JFNS", /* 770x-JL */ 8125 ); /* all others */ 8126 8127 /* 8128 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8129 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8130 * be in auto mode (0x80). 8131 * 8132 * This is corrected by any write to HFSP either by the driver, or 8133 * by the firmware. 8134 * 8135 * We assume 0x07 really means auto mode while this quirk is active, 8136 * as this is far more likely than the ThinkPad being in level 7, 8137 * which is only used by the firmware during thermal emergencies. 8138 * 8139 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8140 * TP-70 (T43, R52), which are known to be buggy. 8141 */ 8142 8143 static void fan_quirk1_setup(void) 8144 { 8145 if (fan_control_initial_status == 0x07) { 8146 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8147 tp_features.fan_ctrl_status_undef = 1; 8148 } 8149 } 8150 8151 static void fan_quirk1_handle(u8 *fan_status) 8152 { 8153 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8154 if (*fan_status != fan_control_initial_status) { 8155 /* something changed the HFSP regisnter since 8156 * driver init time, so it is not undefined 8157 * anymore */ 8158 tp_features.fan_ctrl_status_undef = 0; 8159 } else { 8160 /* Return most likely status. In fact, it 8161 * might be the only possible status */ 8162 *fan_status = TP_EC_FAN_AUTO; 8163 } 8164 } 8165 } 8166 8167 /* Select main fan on X60/X61, NOOP on others */ 8168 static bool fan_select_fan1(void) 8169 { 8170 if (tp_features.second_fan) { 8171 u8 val; 8172 8173 if (ec_read(fan_select_offset, &val) < 0) 8174 return false; 8175 val &= 0xFEU; 8176 if (ec_write(fan_select_offset, val) < 0) 8177 return false; 8178 } 8179 return true; 8180 } 8181 8182 /* Select secondary fan on X60/X61 */ 8183 static bool fan_select_fan2(void) 8184 { 8185 u8 val; 8186 8187 if (!tp_features.second_fan) 8188 return false; 8189 8190 if (ec_read(fan_select_offset, &val) < 0) 8191 return false; 8192 val |= 0x01U; 8193 if (ec_write(fan_select_offset, val) < 0) 8194 return false; 8195 8196 return true; 8197 } 8198 8199 /* 8200 * Call with fan_mutex held 8201 */ 8202 static void fan_update_desired_level(u8 status) 8203 { 8204 if ((status & 8205 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8206 if (status > 7) 8207 fan_control_desired_level = 7; 8208 else 8209 fan_control_desired_level = status; 8210 } 8211 } 8212 8213 static int fan_get_status(u8 *status) 8214 { 8215 u8 s; 8216 8217 /* TODO: 8218 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8219 8220 switch (fan_status_access_mode) { 8221 case TPACPI_FAN_RD_ACPI_GFAN: { 8222 /* 570, 600e/x, 770e, 770x */ 8223 int res; 8224 8225 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8226 return -EIO; 8227 8228 if (likely(status)) 8229 *status = res & 0x07; 8230 8231 break; 8232 } 8233 case TPACPI_FAN_RD_TPEC: 8234 /* all except 570, 600e/x, 770e, 770x */ 8235 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8236 return -EIO; 8237 8238 if (likely(status)) { 8239 *status = s; 8240 fan_quirk1_handle(status); 8241 } 8242 8243 break; 8244 8245 default: 8246 return -ENXIO; 8247 } 8248 8249 return 0; 8250 } 8251 8252 static int fan_get_status_safe(u8 *status) 8253 { 8254 int rc; 8255 u8 s; 8256 8257 if (mutex_lock_killable(&fan_mutex)) 8258 return -ERESTARTSYS; 8259 rc = fan_get_status(&s); 8260 if (!rc) 8261 fan_update_desired_level(s); 8262 mutex_unlock(&fan_mutex); 8263 8264 if (rc) 8265 return rc; 8266 if (status) 8267 *status = s; 8268 8269 return 0; 8270 } 8271 8272 static int fan_get_speed(unsigned int *speed) 8273 { 8274 u8 hi, lo; 8275 8276 switch (fan_status_access_mode) { 8277 case TPACPI_FAN_RD_TPEC: 8278 /* all except 570, 600e/x, 770e, 770x */ 8279 if (unlikely(!fan_select_fan1())) 8280 return -EIO; 8281 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8282 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8283 return -EIO; 8284 8285 if (likely(speed)) 8286 *speed = (hi << 8) | lo; 8287 8288 break; 8289 8290 default: 8291 return -ENXIO; 8292 } 8293 8294 return 0; 8295 } 8296 8297 static int fan2_get_speed(unsigned int *speed) 8298 { 8299 u8 hi, lo; 8300 bool rc; 8301 8302 switch (fan_status_access_mode) { 8303 case TPACPI_FAN_RD_TPEC: 8304 /* all except 570, 600e/x, 770e, 770x */ 8305 if (unlikely(!fan_select_fan2())) 8306 return -EIO; 8307 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8308 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8309 fan_select_fan1(); /* play it safe */ 8310 if (rc) 8311 return -EIO; 8312 8313 if (likely(speed)) 8314 *speed = (hi << 8) | lo; 8315 8316 break; 8317 8318 default: 8319 return -ENXIO; 8320 } 8321 8322 return 0; 8323 } 8324 8325 static int fan_set_level(int level) 8326 { 8327 if (!fan_control_allowed) 8328 return -EPERM; 8329 8330 switch (fan_control_access_mode) { 8331 case TPACPI_FAN_WR_ACPI_SFAN: 8332 if ((level < 0) || (level > 7)) 8333 return -EINVAL; 8334 8335 if (tp_features.second_fan_ctl) { 8336 if (!fan_select_fan2() || 8337 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8338 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8339 tp_features.second_fan_ctl = 0; 8340 } 8341 fan_select_fan1(); 8342 } 8343 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8344 return -EIO; 8345 break; 8346 8347 case TPACPI_FAN_WR_ACPI_FANS: 8348 case TPACPI_FAN_WR_TPEC: 8349 if (!(level & TP_EC_FAN_AUTO) && 8350 !(level & TP_EC_FAN_FULLSPEED) && 8351 ((level < 0) || (level > 7))) 8352 return -EINVAL; 8353 8354 /* safety net should the EC not support AUTO 8355 * or FULLSPEED mode bits and just ignore them */ 8356 if (level & TP_EC_FAN_FULLSPEED) 8357 level |= 7; /* safety min speed 7 */ 8358 else if (level & TP_EC_FAN_AUTO) 8359 level |= 4; /* safety min speed 4 */ 8360 8361 if (tp_features.second_fan_ctl) { 8362 if (!fan_select_fan2() || 8363 !acpi_ec_write(fan_status_offset, level)) { 8364 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8365 tp_features.second_fan_ctl = 0; 8366 } 8367 fan_select_fan1(); 8368 8369 } 8370 if (!acpi_ec_write(fan_status_offset, level)) 8371 return -EIO; 8372 else 8373 tp_features.fan_ctrl_status_undef = 0; 8374 break; 8375 8376 default: 8377 return -ENXIO; 8378 } 8379 8380 vdbg_printk(TPACPI_DBG_FAN, 8381 "fan control: set fan control register to 0x%02x\n", level); 8382 return 0; 8383 } 8384 8385 static int fan_set_level_safe(int level) 8386 { 8387 int rc; 8388 8389 if (!fan_control_allowed) 8390 return -EPERM; 8391 8392 if (mutex_lock_killable(&fan_mutex)) 8393 return -ERESTARTSYS; 8394 8395 if (level == TPACPI_FAN_LAST_LEVEL) 8396 level = fan_control_desired_level; 8397 8398 rc = fan_set_level(level); 8399 if (!rc) 8400 fan_update_desired_level(level); 8401 8402 mutex_unlock(&fan_mutex); 8403 return rc; 8404 } 8405 8406 static int fan_set_enable(void) 8407 { 8408 u8 s; 8409 int rc; 8410 8411 if (!fan_control_allowed) 8412 return -EPERM; 8413 8414 if (mutex_lock_killable(&fan_mutex)) 8415 return -ERESTARTSYS; 8416 8417 switch (fan_control_access_mode) { 8418 case TPACPI_FAN_WR_ACPI_FANS: 8419 case TPACPI_FAN_WR_TPEC: 8420 rc = fan_get_status(&s); 8421 if (rc) 8422 break; 8423 8424 /* Don't go out of emergency fan mode */ 8425 if (s != 7) { 8426 s &= 0x07; 8427 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8428 } 8429 8430 if (!acpi_ec_write(fan_status_offset, s)) 8431 rc = -EIO; 8432 else { 8433 tp_features.fan_ctrl_status_undef = 0; 8434 rc = 0; 8435 } 8436 break; 8437 8438 case TPACPI_FAN_WR_ACPI_SFAN: 8439 rc = fan_get_status(&s); 8440 if (rc) 8441 break; 8442 8443 s &= 0x07; 8444 8445 /* Set fan to at least level 4 */ 8446 s |= 4; 8447 8448 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8449 rc = -EIO; 8450 else 8451 rc = 0; 8452 break; 8453 8454 default: 8455 rc = -ENXIO; 8456 } 8457 8458 mutex_unlock(&fan_mutex); 8459 8460 if (!rc) 8461 vdbg_printk(TPACPI_DBG_FAN, 8462 "fan control: set fan control register to 0x%02x\n", 8463 s); 8464 return rc; 8465 } 8466 8467 static int fan_set_disable(void) 8468 { 8469 int rc; 8470 8471 if (!fan_control_allowed) 8472 return -EPERM; 8473 8474 if (mutex_lock_killable(&fan_mutex)) 8475 return -ERESTARTSYS; 8476 8477 rc = 0; 8478 switch (fan_control_access_mode) { 8479 case TPACPI_FAN_WR_ACPI_FANS: 8480 case TPACPI_FAN_WR_TPEC: 8481 if (!acpi_ec_write(fan_status_offset, 0x00)) 8482 rc = -EIO; 8483 else { 8484 fan_control_desired_level = 0; 8485 tp_features.fan_ctrl_status_undef = 0; 8486 } 8487 break; 8488 8489 case TPACPI_FAN_WR_ACPI_SFAN: 8490 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8491 rc = -EIO; 8492 else 8493 fan_control_desired_level = 0; 8494 break; 8495 8496 default: 8497 rc = -ENXIO; 8498 } 8499 8500 if (!rc) 8501 vdbg_printk(TPACPI_DBG_FAN, 8502 "fan control: set fan control register to 0\n"); 8503 8504 mutex_unlock(&fan_mutex); 8505 return rc; 8506 } 8507 8508 static int fan_set_speed(int speed) 8509 { 8510 int rc; 8511 8512 if (!fan_control_allowed) 8513 return -EPERM; 8514 8515 if (mutex_lock_killable(&fan_mutex)) 8516 return -ERESTARTSYS; 8517 8518 rc = 0; 8519 switch (fan_control_access_mode) { 8520 case TPACPI_FAN_WR_ACPI_FANS: 8521 if (speed >= 0 && speed <= 65535) { 8522 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8523 speed, speed, speed)) 8524 rc = -EIO; 8525 } else 8526 rc = -EINVAL; 8527 break; 8528 8529 default: 8530 rc = -ENXIO; 8531 } 8532 8533 mutex_unlock(&fan_mutex); 8534 return rc; 8535 } 8536 8537 static void fan_watchdog_reset(void) 8538 { 8539 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8540 return; 8541 8542 if (fan_watchdog_maxinterval > 0 && 8543 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8544 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8545 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8546 else 8547 cancel_delayed_work(&fan_watchdog_task); 8548 } 8549 8550 static void fan_watchdog_fire(struct work_struct *ignored) 8551 { 8552 int rc; 8553 8554 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8555 return; 8556 8557 pr_notice("fan watchdog: enabling fan\n"); 8558 rc = fan_set_enable(); 8559 if (rc < 0) { 8560 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8561 rc); 8562 /* reschedule for later */ 8563 fan_watchdog_reset(); 8564 } 8565 } 8566 8567 /* 8568 * SYSFS fan layout: hwmon compatible (device) 8569 * 8570 * pwm*_enable: 8571 * 0: "disengaged" mode 8572 * 1: manual mode 8573 * 2: native EC "auto" mode (recommended, hardware default) 8574 * 8575 * pwm*: set speed in manual mode, ignored otherwise. 8576 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8577 * interpolation. 8578 * 8579 * fan*_input: tachometer reading, RPM 8580 * 8581 * 8582 * SYSFS fan layout: extensions 8583 * 8584 * fan_watchdog (driver): 8585 * fan watchdog interval in seconds, 0 disables (default), max 120 8586 */ 8587 8588 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8589 static ssize_t fan_pwm1_enable_show(struct device *dev, 8590 struct device_attribute *attr, 8591 char *buf) 8592 { 8593 int res, mode; 8594 u8 status; 8595 8596 res = fan_get_status_safe(&status); 8597 if (res) 8598 return res; 8599 8600 if (status & TP_EC_FAN_FULLSPEED) { 8601 mode = 0; 8602 } else if (status & TP_EC_FAN_AUTO) { 8603 mode = 2; 8604 } else 8605 mode = 1; 8606 8607 return sysfs_emit(buf, "%d\n", mode); 8608 } 8609 8610 static ssize_t fan_pwm1_enable_store(struct device *dev, 8611 struct device_attribute *attr, 8612 const char *buf, size_t count) 8613 { 8614 unsigned long t; 8615 int res, level; 8616 8617 if (parse_strtoul(buf, 2, &t)) 8618 return -EINVAL; 8619 8620 tpacpi_disclose_usertask("hwmon pwm1_enable", 8621 "set fan mode to %lu\n", t); 8622 8623 switch (t) { 8624 case 0: 8625 level = TP_EC_FAN_FULLSPEED; 8626 break; 8627 case 1: 8628 level = TPACPI_FAN_LAST_LEVEL; 8629 break; 8630 case 2: 8631 level = TP_EC_FAN_AUTO; 8632 break; 8633 case 3: 8634 /* reserved for software-controlled auto mode */ 8635 return -ENOSYS; 8636 default: 8637 return -EINVAL; 8638 } 8639 8640 res = fan_set_level_safe(level); 8641 if (res == -ENXIO) 8642 return -EINVAL; 8643 else if (res < 0) 8644 return res; 8645 8646 fan_watchdog_reset(); 8647 8648 return count; 8649 } 8650 8651 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8652 fan_pwm1_enable_show, fan_pwm1_enable_store); 8653 8654 /* sysfs fan pwm1 ------------------------------------------------------ */ 8655 static ssize_t fan_pwm1_show(struct device *dev, 8656 struct device_attribute *attr, 8657 char *buf) 8658 { 8659 int res; 8660 u8 status; 8661 8662 res = fan_get_status_safe(&status); 8663 if (res) 8664 return res; 8665 8666 if ((status & 8667 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8668 status = fan_control_desired_level; 8669 8670 if (status > 7) 8671 status = 7; 8672 8673 return sysfs_emit(buf, "%u\n", (status * 255) / 7); 8674 } 8675 8676 static ssize_t fan_pwm1_store(struct device *dev, 8677 struct device_attribute *attr, 8678 const char *buf, size_t count) 8679 { 8680 unsigned long s; 8681 int rc; 8682 u8 status, newlevel; 8683 8684 if (parse_strtoul(buf, 255, &s)) 8685 return -EINVAL; 8686 8687 tpacpi_disclose_usertask("hwmon pwm1", 8688 "set fan speed to %lu\n", s); 8689 8690 /* scale down from 0-255 to 0-7 */ 8691 newlevel = (s >> 5) & 0x07; 8692 8693 if (mutex_lock_killable(&fan_mutex)) 8694 return -ERESTARTSYS; 8695 8696 rc = fan_get_status(&status); 8697 if (!rc && (status & 8698 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8699 rc = fan_set_level(newlevel); 8700 if (rc == -ENXIO) 8701 rc = -EINVAL; 8702 else if (!rc) { 8703 fan_update_desired_level(newlevel); 8704 fan_watchdog_reset(); 8705 } 8706 } 8707 8708 mutex_unlock(&fan_mutex); 8709 return (rc) ? rc : count; 8710 } 8711 8712 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8713 8714 /* sysfs fan fan1_input ------------------------------------------------ */ 8715 static ssize_t fan_fan1_input_show(struct device *dev, 8716 struct device_attribute *attr, 8717 char *buf) 8718 { 8719 int res; 8720 unsigned int speed; 8721 8722 res = fan_get_speed(&speed); 8723 if (res < 0) 8724 return res; 8725 8726 return sysfs_emit(buf, "%u\n", speed); 8727 } 8728 8729 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8730 8731 /* sysfs fan fan2_input ------------------------------------------------ */ 8732 static ssize_t fan_fan2_input_show(struct device *dev, 8733 struct device_attribute *attr, 8734 char *buf) 8735 { 8736 int res; 8737 unsigned int speed; 8738 8739 res = fan2_get_speed(&speed); 8740 if (res < 0) 8741 return res; 8742 8743 return sysfs_emit(buf, "%u\n", speed); 8744 } 8745 8746 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8747 8748 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8749 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8750 { 8751 return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval); 8752 } 8753 8754 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8755 size_t count) 8756 { 8757 unsigned long t; 8758 8759 if (parse_strtoul(buf, 120, &t)) 8760 return -EINVAL; 8761 8762 if (!fan_control_allowed) 8763 return -EPERM; 8764 8765 fan_watchdog_maxinterval = t; 8766 fan_watchdog_reset(); 8767 8768 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8769 8770 return count; 8771 } 8772 static DRIVER_ATTR_RW(fan_watchdog); 8773 8774 /* --------------------------------------------------------------------- */ 8775 8776 static struct attribute *fan_attributes[] = { 8777 &dev_attr_pwm1_enable.attr, 8778 &dev_attr_pwm1.attr, 8779 &dev_attr_fan1_input.attr, 8780 &dev_attr_fan2_input.attr, 8781 NULL 8782 }; 8783 8784 static umode_t fan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 8785 int n) 8786 { 8787 if (fan_status_access_mode == TPACPI_FAN_NONE && 8788 fan_control_access_mode == TPACPI_FAN_WR_NONE) 8789 return 0; 8790 8791 if (attr == &dev_attr_fan2_input.attr) { 8792 if (!tp_features.second_fan) 8793 return 0; 8794 } 8795 8796 return attr->mode; 8797 } 8798 8799 static const struct attribute_group fan_attr_group = { 8800 .is_visible = fan_attr_is_visible, 8801 .attrs = fan_attributes, 8802 }; 8803 8804 static struct attribute *fan_driver_attributes[] = { 8805 &driver_attr_fan_watchdog.attr, 8806 NULL 8807 }; 8808 8809 static const struct attribute_group fan_driver_attr_group = { 8810 .is_visible = fan_attr_is_visible, 8811 .attrs = fan_driver_attributes, 8812 }; 8813 8814 #define TPACPI_FAN_Q1 0x0001 /* Uninitialized HFSP */ 8815 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8816 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8817 #define TPACPI_FAN_NOFAN 0x0008 /* no fan available */ 8818 8819 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8820 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8821 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8822 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8823 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8824 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8825 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8826 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8827 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8828 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8829 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8830 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8831 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ 8832 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8833 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8834 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8835 TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL), /* T15g (2nd gen) */ 8836 TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */ 8837 }; 8838 8839 static int __init fan_init(struct ibm_init_struct *iibm) 8840 { 8841 unsigned long quirks; 8842 8843 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8844 "initializing fan subdriver\n"); 8845 8846 mutex_init(&fan_mutex); 8847 fan_status_access_mode = TPACPI_FAN_NONE; 8848 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8849 fan_control_commands = 0; 8850 fan_watchdog_maxinterval = 0; 8851 tp_features.fan_ctrl_status_undef = 0; 8852 tp_features.second_fan = 0; 8853 tp_features.second_fan_ctl = 0; 8854 fan_control_desired_level = 7; 8855 8856 if (tpacpi_is_ibm()) { 8857 TPACPI_ACPIHANDLE_INIT(fans); 8858 TPACPI_ACPIHANDLE_INIT(gfan); 8859 TPACPI_ACPIHANDLE_INIT(sfan); 8860 } 8861 8862 quirks = tpacpi_check_quirks(fan_quirk_table, 8863 ARRAY_SIZE(fan_quirk_table)); 8864 8865 if (quirks & TPACPI_FAN_NOFAN) { 8866 pr_info("No integrated ThinkPad fan available\n"); 8867 return -ENODEV; 8868 } 8869 8870 if (gfan_handle) { 8871 /* 570, 600e/x, 770e, 770x */ 8872 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8873 } else { 8874 /* all other ThinkPads: note that even old-style 8875 * ThinkPad ECs supports the fan control register */ 8876 if (likely(acpi_ec_read(fan_status_offset, 8877 &fan_control_initial_status))) { 8878 int res; 8879 unsigned int speed; 8880 8881 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 8882 if (quirks & TPACPI_FAN_Q1) 8883 fan_quirk1_setup(); 8884 /* Try and probe the 2nd fan */ 8885 tp_features.second_fan = 1; /* needed for get_speed to work */ 8886 res = fan2_get_speed(&speed); 8887 if (res >= 0 && speed != FAN_NOT_PRESENT) { 8888 /* It responded - so let's assume it's there */ 8889 tp_features.second_fan = 1; 8890 tp_features.second_fan_ctl = 1; 8891 pr_info("secondary fan control detected & enabled\n"); 8892 } else { 8893 /* Fan not auto-detected */ 8894 tp_features.second_fan = 0; 8895 if (quirks & TPACPI_FAN_2FAN) { 8896 tp_features.second_fan = 1; 8897 pr_info("secondary fan support enabled\n"); 8898 } 8899 if (quirks & TPACPI_FAN_2CTL) { 8900 tp_features.second_fan = 1; 8901 tp_features.second_fan_ctl = 1; 8902 pr_info("secondary fan control enabled\n"); 8903 } 8904 } 8905 } else { 8906 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8907 return -ENODEV; 8908 } 8909 } 8910 8911 if (sfan_handle) { 8912 /* 570, 770x-JL */ 8913 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8914 fan_control_commands |= 8915 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8916 } else { 8917 if (!gfan_handle) { 8918 /* gfan without sfan means no fan control */ 8919 /* all other models implement TP EC 0x2f control */ 8920 8921 if (fans_handle) { 8922 /* X31, X40, X41 */ 8923 fan_control_access_mode = 8924 TPACPI_FAN_WR_ACPI_FANS; 8925 fan_control_commands |= 8926 TPACPI_FAN_CMD_SPEED | 8927 TPACPI_FAN_CMD_LEVEL | 8928 TPACPI_FAN_CMD_ENABLE; 8929 } else { 8930 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8931 fan_control_commands |= 8932 TPACPI_FAN_CMD_LEVEL | 8933 TPACPI_FAN_CMD_ENABLE; 8934 } 8935 } 8936 } 8937 8938 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8939 "fan is %s, modes %d, %d\n", 8940 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8941 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8942 fan_status_access_mode, fan_control_access_mode); 8943 8944 /* fan control master switch */ 8945 if (!fan_control_allowed) { 8946 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8947 fan_control_commands = 0; 8948 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8949 "fan control features disabled by parameter\n"); 8950 } 8951 8952 /* update fan_control_desired_level */ 8953 if (fan_status_access_mode != TPACPI_FAN_NONE) 8954 fan_get_status_safe(NULL); 8955 8956 if (fan_status_access_mode == TPACPI_FAN_NONE && 8957 fan_control_access_mode == TPACPI_FAN_WR_NONE) 8958 return -ENODEV; 8959 8960 return 0; 8961 } 8962 8963 static void fan_exit(void) 8964 { 8965 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8966 "cancelling any pending fan watchdog tasks\n"); 8967 8968 cancel_delayed_work(&fan_watchdog_task); 8969 flush_workqueue(tpacpi_wq); 8970 } 8971 8972 static void fan_suspend(void) 8973 { 8974 int rc; 8975 8976 if (!fan_control_allowed) 8977 return; 8978 8979 /* Store fan status in cache */ 8980 fan_control_resume_level = 0; 8981 rc = fan_get_status_safe(&fan_control_resume_level); 8982 if (rc) 8983 pr_notice("failed to read fan level for later restore during resume: %d\n", 8984 rc); 8985 8986 /* if it is undefined, don't attempt to restore it. 8987 * KEEP THIS LAST */ 8988 if (tp_features.fan_ctrl_status_undef) 8989 fan_control_resume_level = 0; 8990 } 8991 8992 static void fan_resume(void) 8993 { 8994 u8 current_level = 7; 8995 bool do_set = false; 8996 int rc; 8997 8998 /* DSDT *always* updates status on resume */ 8999 tp_features.fan_ctrl_status_undef = 0; 9000 9001 if (!fan_control_allowed || 9002 !fan_control_resume_level || 9003 fan_get_status_safe(¤t_level)) 9004 return; 9005 9006 switch (fan_control_access_mode) { 9007 case TPACPI_FAN_WR_ACPI_SFAN: 9008 /* never decrease fan level */ 9009 do_set = (fan_control_resume_level > current_level); 9010 break; 9011 case TPACPI_FAN_WR_ACPI_FANS: 9012 case TPACPI_FAN_WR_TPEC: 9013 /* never decrease fan level, scale is: 9014 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 9015 * 9016 * We expect the firmware to set either 7 or AUTO, but we 9017 * handle FULLSPEED out of paranoia. 9018 * 9019 * So, we can safely only restore FULLSPEED or 7, anything 9020 * else could slow the fan. Restoring AUTO is useless, at 9021 * best that's exactly what the DSDT already set (it is the 9022 * slower it uses). 9023 * 9024 * Always keep in mind that the DSDT *will* have set the 9025 * fans to what the vendor supposes is the best level. We 9026 * muck with it only to speed the fan up. 9027 */ 9028 if (fan_control_resume_level != 7 && 9029 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 9030 return; 9031 else 9032 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 9033 (current_level != fan_control_resume_level); 9034 break; 9035 default: 9036 return; 9037 } 9038 if (do_set) { 9039 pr_notice("restoring fan level to 0x%02x\n", 9040 fan_control_resume_level); 9041 rc = fan_set_level_safe(fan_control_resume_level); 9042 if (rc < 0) 9043 pr_notice("failed to restore fan level: %d\n", rc); 9044 } 9045 } 9046 9047 static int fan_read(struct seq_file *m) 9048 { 9049 int rc; 9050 u8 status; 9051 unsigned int speed = 0; 9052 9053 switch (fan_status_access_mode) { 9054 case TPACPI_FAN_RD_ACPI_GFAN: 9055 /* 570, 600e/x, 770e, 770x */ 9056 rc = fan_get_status_safe(&status); 9057 if (rc) 9058 return rc; 9059 9060 seq_printf(m, "status:\t\t%s\n" 9061 "level:\t\t%d\n", 9062 str_enabled_disabled(status), status); 9063 break; 9064 9065 case TPACPI_FAN_RD_TPEC: 9066 /* all except 570, 600e/x, 770e, 770x */ 9067 rc = fan_get_status_safe(&status); 9068 if (rc) 9069 return rc; 9070 9071 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status)); 9072 9073 rc = fan_get_speed(&speed); 9074 if (rc < 0) 9075 return rc; 9076 9077 seq_printf(m, "speed:\t\t%d\n", speed); 9078 9079 if (status & TP_EC_FAN_FULLSPEED) 9080 /* Disengaged mode takes precedence */ 9081 seq_printf(m, "level:\t\tdisengaged\n"); 9082 else if (status & TP_EC_FAN_AUTO) 9083 seq_printf(m, "level:\t\tauto\n"); 9084 else 9085 seq_printf(m, "level:\t\t%d\n", status); 9086 break; 9087 9088 case TPACPI_FAN_NONE: 9089 default: 9090 seq_printf(m, "status:\t\tnot supported\n"); 9091 } 9092 9093 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9094 seq_printf(m, "commands:\tlevel <level>"); 9095 9096 switch (fan_control_access_mode) { 9097 case TPACPI_FAN_WR_ACPI_SFAN: 9098 seq_printf(m, " (<level> is 0-7)\n"); 9099 break; 9100 9101 default: 9102 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9103 break; 9104 } 9105 } 9106 9107 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9108 seq_printf(m, "commands:\tenable, disable\n" 9109 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9110 9111 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9112 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9113 9114 return 0; 9115 } 9116 9117 static int fan_write_cmd_level(const char *cmd, int *rc) 9118 { 9119 int level; 9120 9121 if (strstarts(cmd, "level auto")) 9122 level = TP_EC_FAN_AUTO; 9123 else if (strstarts(cmd, "level disengaged") || strstarts(cmd, "level full-speed")) 9124 level = TP_EC_FAN_FULLSPEED; 9125 else if (sscanf(cmd, "level %d", &level) != 1) 9126 return 0; 9127 9128 *rc = fan_set_level_safe(level); 9129 if (*rc == -ENXIO) 9130 pr_err("level command accepted for unsupported access mode %d\n", 9131 fan_control_access_mode); 9132 else if (!*rc) 9133 tpacpi_disclose_usertask("procfs fan", 9134 "set level to %d\n", level); 9135 9136 return 1; 9137 } 9138 9139 static int fan_write_cmd_enable(const char *cmd, int *rc) 9140 { 9141 if (!strstarts(cmd, "enable")) 9142 return 0; 9143 9144 *rc = fan_set_enable(); 9145 if (*rc == -ENXIO) 9146 pr_err("enable command accepted for unsupported access mode %d\n", 9147 fan_control_access_mode); 9148 else if (!*rc) 9149 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9150 9151 return 1; 9152 } 9153 9154 static int fan_write_cmd_disable(const char *cmd, int *rc) 9155 { 9156 if (!strstarts(cmd, "disable")) 9157 return 0; 9158 9159 *rc = fan_set_disable(); 9160 if (*rc == -ENXIO) 9161 pr_err("disable command accepted for unsupported access mode %d\n", 9162 fan_control_access_mode); 9163 else if (!*rc) 9164 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9165 9166 return 1; 9167 } 9168 9169 static int fan_write_cmd_speed(const char *cmd, int *rc) 9170 { 9171 int speed; 9172 9173 /* TODO: 9174 * Support speed <low> <medium> <high> ? */ 9175 9176 if (sscanf(cmd, "speed %d", &speed) != 1) 9177 return 0; 9178 9179 *rc = fan_set_speed(speed); 9180 if (*rc == -ENXIO) 9181 pr_err("speed command accepted for unsupported access mode %d\n", 9182 fan_control_access_mode); 9183 else if (!*rc) 9184 tpacpi_disclose_usertask("procfs fan", 9185 "set speed to %d\n", speed); 9186 9187 return 1; 9188 } 9189 9190 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9191 { 9192 int interval; 9193 9194 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9195 return 0; 9196 9197 if (interval < 0 || interval > 120) 9198 *rc = -EINVAL; 9199 else { 9200 fan_watchdog_maxinterval = interval; 9201 tpacpi_disclose_usertask("procfs fan", 9202 "set watchdog timer to %d\n", 9203 interval); 9204 } 9205 9206 return 1; 9207 } 9208 9209 static int fan_write(char *buf) 9210 { 9211 char *cmd; 9212 int rc = 0; 9213 9214 while (!rc && (cmd = strsep(&buf, ","))) { 9215 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9216 fan_write_cmd_level(cmd, &rc)) && 9217 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9218 (fan_write_cmd_enable(cmd, &rc) || 9219 fan_write_cmd_disable(cmd, &rc) || 9220 fan_write_cmd_watchdog(cmd, &rc))) && 9221 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9222 fan_write_cmd_speed(cmd, &rc)) 9223 ) 9224 rc = -EINVAL; 9225 else if (!rc) 9226 fan_watchdog_reset(); 9227 } 9228 9229 return rc; 9230 } 9231 9232 static struct ibm_struct fan_driver_data = { 9233 .name = "fan", 9234 .read = fan_read, 9235 .write = fan_write, 9236 .exit = fan_exit, 9237 .suspend = fan_suspend, 9238 .resume = fan_resume, 9239 }; 9240 9241 /************************************************************************* 9242 * Mute LED subdriver 9243 */ 9244 9245 #define TPACPI_LED_MAX 2 9246 9247 struct tp_led_table { 9248 acpi_string name; 9249 int on_value; 9250 int off_value; 9251 int state; 9252 }; 9253 9254 static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9255 [LED_AUDIO_MUTE] = { 9256 .name = "SSMS", 9257 .on_value = 1, 9258 .off_value = 0, 9259 }, 9260 [LED_AUDIO_MICMUTE] = { 9261 .name = "MMTS", 9262 .on_value = 2, 9263 .off_value = 0, 9264 }, 9265 }; 9266 9267 static int mute_led_on_off(struct tp_led_table *t, bool state) 9268 { 9269 acpi_handle temp; 9270 int output; 9271 9272 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9273 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9274 return -EIO; 9275 } 9276 9277 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9278 state ? t->on_value : t->off_value)) 9279 return -EIO; 9280 9281 t->state = state; 9282 return state; 9283 } 9284 9285 static int tpacpi_led_set(int whichled, bool on) 9286 { 9287 struct tp_led_table *t; 9288 9289 t = &led_tables[whichled]; 9290 if (t->state < 0 || t->state == on) 9291 return t->state; 9292 return mute_led_on_off(t, on); 9293 } 9294 9295 static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9296 enum led_brightness brightness) 9297 { 9298 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9299 } 9300 9301 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9302 enum led_brightness brightness) 9303 { 9304 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9305 } 9306 9307 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9308 [LED_AUDIO_MUTE] = { 9309 .name = "platform::mute", 9310 .max_brightness = 1, 9311 .brightness_set_blocking = tpacpi_led_mute_set, 9312 .default_trigger = "audio-mute", 9313 }, 9314 [LED_AUDIO_MICMUTE] = { 9315 .name = "platform::micmute", 9316 .max_brightness = 1, 9317 .brightness_set_blocking = tpacpi_led_micmute_set, 9318 .default_trigger = "audio-micmute", 9319 }, 9320 }; 9321 9322 static int mute_led_init(struct ibm_init_struct *iibm) 9323 { 9324 acpi_handle temp; 9325 int i, err; 9326 9327 for (i = 0; i < TPACPI_LED_MAX; i++) { 9328 struct tp_led_table *t = &led_tables[i]; 9329 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9330 t->state = -ENODEV; 9331 continue; 9332 } 9333 9334 mute_led_cdev[i].brightness = ledtrig_audio_get(i); 9335 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9336 if (err < 0) { 9337 while (i--) 9338 led_classdev_unregister(&mute_led_cdev[i]); 9339 return err; 9340 } 9341 } 9342 return 0; 9343 } 9344 9345 static void mute_led_exit(void) 9346 { 9347 int i; 9348 9349 for (i = 0; i < TPACPI_LED_MAX; i++) { 9350 led_classdev_unregister(&mute_led_cdev[i]); 9351 tpacpi_led_set(i, false); 9352 } 9353 } 9354 9355 static void mute_led_resume(void) 9356 { 9357 int i; 9358 9359 for (i = 0; i < TPACPI_LED_MAX; i++) { 9360 struct tp_led_table *t = &led_tables[i]; 9361 if (t->state >= 0) 9362 mute_led_on_off(t, t->state); 9363 } 9364 } 9365 9366 static struct ibm_struct mute_led_driver_data = { 9367 .name = "mute_led", 9368 .exit = mute_led_exit, 9369 .resume = mute_led_resume, 9370 }; 9371 9372 /* 9373 * Battery Wear Control Driver 9374 * Contact: Ognjen Galic <smclt30p@gmail.com> 9375 */ 9376 9377 /* Metadata */ 9378 9379 #define GET_START "BCTG" 9380 #define SET_START "BCCS" 9381 #define GET_STOP "BCSG" 9382 #define SET_STOP "BCSS" 9383 #define GET_DISCHARGE "BDSG" 9384 #define SET_DISCHARGE "BDSS" 9385 #define GET_INHIBIT "BICG" 9386 #define SET_INHIBIT "BICS" 9387 9388 enum { 9389 BAT_ANY = 0, 9390 BAT_PRIMARY = 1, 9391 BAT_SECONDARY = 2 9392 }; 9393 9394 enum { 9395 /* Error condition bit */ 9396 METHOD_ERR = BIT(31), 9397 }; 9398 9399 enum { 9400 /* This is used in the get/set helpers */ 9401 THRESHOLD_START, 9402 THRESHOLD_STOP, 9403 FORCE_DISCHARGE, 9404 INHIBIT_CHARGE, 9405 }; 9406 9407 struct tpacpi_battery_data { 9408 int charge_start; 9409 int start_support; 9410 int charge_stop; 9411 int stop_support; 9412 unsigned int charge_behaviours; 9413 }; 9414 9415 struct tpacpi_battery_driver_data { 9416 struct tpacpi_battery_data batteries[3]; 9417 int individual_addressing; 9418 }; 9419 9420 static struct tpacpi_battery_driver_data battery_info; 9421 9422 /* ACPI helpers/functions/probes */ 9423 9424 /** 9425 * This evaluates a ACPI method call specific to the battery 9426 * ACPI extension. The specifics are that an error is marked 9427 * in the 32rd bit of the response, so we just check that here. 9428 */ 9429 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9430 { 9431 int response; 9432 9433 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9434 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9435 return AE_ERROR; 9436 } 9437 if (response & METHOD_ERR) { 9438 acpi_handle_err(hkey_handle, 9439 "%s evaluated but flagged as error", method); 9440 return AE_ERROR; 9441 } 9442 *ret = response; 9443 return AE_OK; 9444 } 9445 9446 static int tpacpi_battery_get(int what, int battery, int *ret) 9447 { 9448 switch (what) { 9449 case THRESHOLD_START: 9450 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) 9451 return -ENODEV; 9452 9453 /* The value is in the low 8 bits of the response */ 9454 *ret = *ret & 0xFF; 9455 return 0; 9456 case THRESHOLD_STOP: 9457 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) 9458 return -ENODEV; 9459 /* Value is in lower 8 bits */ 9460 *ret = *ret & 0xFF; 9461 /* 9462 * On the stop value, if we return 0 that 9463 * does not make any sense. 0 means Default, which 9464 * means that charging stops at 100%, so we return 9465 * that. 9466 */ 9467 if (*ret == 0) 9468 *ret = 100; 9469 return 0; 9470 case FORCE_DISCHARGE: 9471 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, ret, battery)) 9472 return -ENODEV; 9473 /* The force discharge status is in bit 0 */ 9474 *ret = *ret & 0x01; 9475 return 0; 9476 case INHIBIT_CHARGE: 9477 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, ret, battery)) 9478 return -ENODEV; 9479 /* The inhibit charge status is in bit 0 */ 9480 *ret = *ret & 0x01; 9481 return 0; 9482 default: 9483 pr_crit("wrong parameter: %d", what); 9484 return -EINVAL; 9485 } 9486 } 9487 9488 static int tpacpi_battery_set(int what, int battery, int value) 9489 { 9490 int param, ret; 9491 /* The first 8 bits are the value of the threshold */ 9492 param = value; 9493 /* The battery ID is in bits 8-9, 2 bits */ 9494 param |= battery << 8; 9495 9496 switch (what) { 9497 case THRESHOLD_START: 9498 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9499 pr_err("failed to set charge threshold on battery %d", 9500 battery); 9501 return -ENODEV; 9502 } 9503 return 0; 9504 case THRESHOLD_STOP: 9505 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9506 pr_err("failed to set stop threshold: %d", battery); 9507 return -ENODEV; 9508 } 9509 return 0; 9510 case FORCE_DISCHARGE: 9511 /* Force discharge is in bit 0, 9512 * break on AC attach is in bit 1 (won't work on some ThinkPads), 9513 * battery ID is in bits 8-9, 2 bits. 9514 */ 9515 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_DISCHARGE, &ret, param))) { 9516 pr_err("failed to set force discharge on %d", battery); 9517 return -ENODEV; 9518 } 9519 return 0; 9520 case INHIBIT_CHARGE: 9521 /* When setting inhibit charge, we set a default value of 9522 * always breaking on AC detach and the effective time is set to 9523 * be permanent. 9524 * The battery ID is in bits 4-5, 2 bits, 9525 * the effective time is in bits 8-23, 2 bytes. 9526 * A time of FFFF indicates forever. 9527 */ 9528 param = value; 9529 param |= battery << 4; 9530 param |= 0xFFFF << 8; 9531 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_INHIBIT, &ret, param))) { 9532 pr_err("failed to set inhibit charge on %d", battery); 9533 return -ENODEV; 9534 } 9535 return 0; 9536 default: 9537 pr_crit("wrong parameter: %d", what); 9538 return -EINVAL; 9539 } 9540 } 9541 9542 static int tpacpi_battery_set_validate(int what, int battery, int value) 9543 { 9544 int ret, v; 9545 9546 ret = tpacpi_battery_set(what, battery, value); 9547 if (ret < 0) 9548 return ret; 9549 9550 ret = tpacpi_battery_get(what, battery, &v); 9551 if (ret < 0) 9552 return ret; 9553 9554 if (v == value) 9555 return 0; 9556 9557 msleep(500); 9558 9559 ret = tpacpi_battery_get(what, battery, &v); 9560 if (ret < 0) 9561 return ret; 9562 9563 if (v == value) 9564 return 0; 9565 9566 return -EIO; 9567 } 9568 9569 static int tpacpi_battery_probe(int battery) 9570 { 9571 int ret = 0; 9572 9573 memset(&battery_info.batteries[battery], 0, 9574 sizeof(battery_info.batteries[battery])); 9575 9576 /* 9577 * 1) Get the current start threshold 9578 * 2) Check for support 9579 * 3) Get the current stop threshold 9580 * 4) Check for support 9581 * 5) Get the current force discharge status 9582 * 6) Check for support 9583 * 7) Get the current inhibit charge status 9584 * 8) Check for support 9585 */ 9586 if (acpi_has_method(hkey_handle, GET_START)) { 9587 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9588 pr_err("Error probing battery %d\n", battery); 9589 return -ENODEV; 9590 } 9591 /* Individual addressing is in bit 9 */ 9592 if (ret & BIT(9)) 9593 battery_info.individual_addressing = true; 9594 /* Support is marked in bit 8 */ 9595 if (ret & BIT(8)) 9596 battery_info.batteries[battery].start_support = 1; 9597 else 9598 return -ENODEV; 9599 if (tpacpi_battery_get(THRESHOLD_START, battery, 9600 &battery_info.batteries[battery].charge_start)) { 9601 pr_err("Error probing battery %d\n", battery); 9602 return -ENODEV; 9603 } 9604 } 9605 if (acpi_has_method(hkey_handle, GET_STOP)) { 9606 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9607 pr_err("Error probing battery stop; %d\n", battery); 9608 return -ENODEV; 9609 } 9610 /* Support is marked in bit 8 */ 9611 if (ret & BIT(8)) 9612 battery_info.batteries[battery].stop_support = 1; 9613 else 9614 return -ENODEV; 9615 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9616 &battery_info.batteries[battery].charge_stop)) { 9617 pr_err("Error probing battery stop: %d\n", battery); 9618 return -ENODEV; 9619 } 9620 } 9621 if (acpi_has_method(hkey_handle, GET_DISCHARGE)) { 9622 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, &ret, battery))) { 9623 pr_err("Error probing battery discharge; %d\n", battery); 9624 return -ENODEV; 9625 } 9626 /* Support is marked in bit 8 */ 9627 if (ret & BIT(8)) 9628 battery_info.batteries[battery].charge_behaviours |= 9629 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE); 9630 } 9631 if (acpi_has_method(hkey_handle, GET_INHIBIT)) { 9632 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, &ret, battery))) { 9633 pr_err("Error probing battery inhibit charge; %d\n", battery); 9634 return -ENODEV; 9635 } 9636 /* Support is marked in bit 5 */ 9637 if (ret & BIT(5)) 9638 battery_info.batteries[battery].charge_behaviours |= 9639 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE); 9640 } 9641 9642 battery_info.batteries[battery].charge_behaviours |= 9643 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO); 9644 9645 pr_info("battery %d registered (start %d, stop %d, behaviours: 0x%x)\n", 9646 battery, 9647 battery_info.batteries[battery].charge_start, 9648 battery_info.batteries[battery].charge_stop, 9649 battery_info.batteries[battery].charge_behaviours); 9650 9651 return 0; 9652 } 9653 9654 /* General helper functions */ 9655 9656 static int tpacpi_battery_get_id(const char *battery_name) 9657 { 9658 9659 if (strcmp(battery_name, "BAT0") == 0 || 9660 tp_features.battery_force_primary) 9661 return BAT_PRIMARY; 9662 if (strcmp(battery_name, "BAT1") == 0) 9663 return BAT_SECONDARY; 9664 /* 9665 * If for some reason the battery is not BAT0 nor is it 9666 * BAT1, we will assume it's the default, first battery, 9667 * AKA primary. 9668 */ 9669 pr_warn("unknown battery %s, assuming primary", battery_name); 9670 return BAT_PRIMARY; 9671 } 9672 9673 /* sysfs interface */ 9674 9675 static ssize_t tpacpi_battery_store(int what, 9676 struct device *dev, 9677 const char *buf, size_t count) 9678 { 9679 struct power_supply *supply = to_power_supply(dev); 9680 unsigned long value; 9681 int battery, rval; 9682 /* 9683 * Some systems have support for more than 9684 * one battery. If that is the case, 9685 * tpacpi_battery_probe marked that addressing 9686 * them individually is supported, so we do that 9687 * based on the device struct. 9688 * 9689 * On systems that are not supported, we assume 9690 * the primary as most of the ACPI calls fail 9691 * with "Any Battery" as the parameter. 9692 */ 9693 if (battery_info.individual_addressing) 9694 /* BAT_PRIMARY or BAT_SECONDARY */ 9695 battery = tpacpi_battery_get_id(supply->desc->name); 9696 else 9697 battery = BAT_PRIMARY; 9698 9699 rval = kstrtoul(buf, 10, &value); 9700 if (rval) 9701 return rval; 9702 9703 switch (what) { 9704 case THRESHOLD_START: 9705 if (!battery_info.batteries[battery].start_support) 9706 return -ENODEV; 9707 /* valid values are [0, 99] */ 9708 if (value > 99) 9709 return -EINVAL; 9710 if (value > battery_info.batteries[battery].charge_stop) 9711 return -EINVAL; 9712 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9713 return -ENODEV; 9714 battery_info.batteries[battery].charge_start = value; 9715 return count; 9716 9717 case THRESHOLD_STOP: 9718 if (!battery_info.batteries[battery].stop_support) 9719 return -ENODEV; 9720 /* valid values are [1, 100] */ 9721 if (value < 1 || value > 100) 9722 return -EINVAL; 9723 if (value < battery_info.batteries[battery].charge_start) 9724 return -EINVAL; 9725 battery_info.batteries[battery].charge_stop = value; 9726 /* 9727 * When 100 is passed to stop, we need to flip 9728 * it to 0 as that the EC understands that as 9729 * "Default", which will charge to 100% 9730 */ 9731 if (value == 100) 9732 value = 0; 9733 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9734 return -EINVAL; 9735 return count; 9736 default: 9737 pr_crit("Wrong parameter: %d", what); 9738 return -EINVAL; 9739 } 9740 return count; 9741 } 9742 9743 static ssize_t tpacpi_battery_show(int what, 9744 struct device *dev, 9745 char *buf) 9746 { 9747 struct power_supply *supply = to_power_supply(dev); 9748 int ret, battery; 9749 /* 9750 * Some systems have support for more than 9751 * one battery. If that is the case, 9752 * tpacpi_battery_probe marked that addressing 9753 * them individually is supported, so we; 9754 * based on the device struct. 9755 * 9756 * On systems that are not supported, we assume 9757 * the primary as most of the ACPI calls fail 9758 * with "Any Battery" as the parameter. 9759 */ 9760 if (battery_info.individual_addressing) 9761 /* BAT_PRIMARY or BAT_SECONDARY */ 9762 battery = tpacpi_battery_get_id(supply->desc->name); 9763 else 9764 battery = BAT_PRIMARY; 9765 if (tpacpi_battery_get(what, battery, &ret)) 9766 return -ENODEV; 9767 return sprintf(buf, "%d\n", ret); 9768 } 9769 9770 static ssize_t charge_control_start_threshold_show(struct device *device, 9771 struct device_attribute *attr, 9772 char *buf) 9773 { 9774 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9775 } 9776 9777 static ssize_t charge_control_end_threshold_show(struct device *device, 9778 struct device_attribute *attr, 9779 char *buf) 9780 { 9781 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9782 } 9783 9784 static ssize_t charge_behaviour_show(struct device *dev, 9785 struct device_attribute *attr, 9786 char *buf) 9787 { 9788 enum power_supply_charge_behaviour active = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO; 9789 struct power_supply *supply = to_power_supply(dev); 9790 unsigned int available; 9791 int ret, battery; 9792 9793 battery = tpacpi_battery_get_id(supply->desc->name); 9794 available = battery_info.batteries[battery].charge_behaviours; 9795 9796 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) { 9797 if (tpacpi_battery_get(FORCE_DISCHARGE, battery, &ret)) 9798 return -ENODEV; 9799 if (ret) { 9800 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE; 9801 goto out; 9802 } 9803 } 9804 9805 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) { 9806 if (tpacpi_battery_get(INHIBIT_CHARGE, battery, &ret)) 9807 return -ENODEV; 9808 if (ret) { 9809 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE; 9810 goto out; 9811 } 9812 } 9813 9814 out: 9815 return power_supply_charge_behaviour_show(dev, available, active, buf); 9816 } 9817 9818 static ssize_t charge_control_start_threshold_store(struct device *dev, 9819 struct device_attribute *attr, 9820 const char *buf, size_t count) 9821 { 9822 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9823 } 9824 9825 static ssize_t charge_control_end_threshold_store(struct device *dev, 9826 struct device_attribute *attr, 9827 const char *buf, size_t count) 9828 { 9829 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9830 } 9831 9832 static ssize_t charge_behaviour_store(struct device *dev, 9833 struct device_attribute *attr, 9834 const char *buf, size_t count) 9835 { 9836 struct power_supply *supply = to_power_supply(dev); 9837 int selected, battery, ret = 0; 9838 unsigned int available; 9839 9840 battery = tpacpi_battery_get_id(supply->desc->name); 9841 available = battery_info.batteries[battery].charge_behaviours; 9842 selected = power_supply_charge_behaviour_parse(available, buf); 9843 9844 if (selected < 0) 9845 return selected; 9846 9847 switch (selected) { 9848 case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO: 9849 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9850 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9851 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9852 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0)); 9853 if (ret < 0) 9854 return ret; 9855 break; 9856 case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE: 9857 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9858 ret = tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0); 9859 ret = min(ret, tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 1)); 9860 if (ret < 0) 9861 return ret; 9862 break; 9863 case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE: 9864 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9865 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9866 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 1)); 9867 if (ret < 0) 9868 return ret; 9869 break; 9870 default: 9871 dev_err(dev, "Unexpected charge behaviour: %d\n", selected); 9872 return -EINVAL; 9873 } 9874 9875 return count; 9876 } 9877 9878 static DEVICE_ATTR_RW(charge_control_start_threshold); 9879 static DEVICE_ATTR_RW(charge_control_end_threshold); 9880 static DEVICE_ATTR_RW(charge_behaviour); 9881 static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9882 charge_start_threshold, 9883 0644, 9884 charge_control_start_threshold_show, 9885 charge_control_start_threshold_store 9886 ); 9887 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9888 charge_stop_threshold, 9889 0644, 9890 charge_control_end_threshold_show, 9891 charge_control_end_threshold_store 9892 ); 9893 9894 static struct attribute *tpacpi_battery_attrs[] = { 9895 &dev_attr_charge_control_start_threshold.attr, 9896 &dev_attr_charge_control_end_threshold.attr, 9897 &dev_attr_charge_start_threshold.attr, 9898 &dev_attr_charge_stop_threshold.attr, 9899 &dev_attr_charge_behaviour.attr, 9900 NULL, 9901 }; 9902 9903 ATTRIBUTE_GROUPS(tpacpi_battery); 9904 9905 /* ACPI battery hooking */ 9906 9907 static int tpacpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook) 9908 { 9909 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9910 9911 if (tpacpi_battery_probe(batteryid)) 9912 return -ENODEV; 9913 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9914 return -ENODEV; 9915 return 0; 9916 } 9917 9918 static int tpacpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook) 9919 { 9920 device_remove_groups(&battery->dev, tpacpi_battery_groups); 9921 return 0; 9922 } 9923 9924 static struct acpi_battery_hook battery_hook = { 9925 .add_battery = tpacpi_battery_add, 9926 .remove_battery = tpacpi_battery_remove, 9927 .name = "ThinkPad Battery Extension", 9928 }; 9929 9930 /* Subdriver init/exit */ 9931 9932 static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 9933 /* 9934 * Individual addressing is broken on models that expose the 9935 * primary battery as BAT1. 9936 */ 9937 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 9938 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 9939 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 9940 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 9941 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 9942 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 9943 }; 9944 9945 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 9946 { 9947 memset(&battery_info, 0, sizeof(battery_info)); 9948 9949 tp_features.battery_force_primary = tpacpi_check_quirks( 9950 battery_quirk_table, 9951 ARRAY_SIZE(battery_quirk_table)); 9952 9953 battery_hook_register(&battery_hook); 9954 return 0; 9955 } 9956 9957 static void tpacpi_battery_exit(void) 9958 { 9959 battery_hook_unregister(&battery_hook); 9960 } 9961 9962 static struct ibm_struct battery_driver_data = { 9963 .name = "battery", 9964 .exit = tpacpi_battery_exit, 9965 }; 9966 9967 /************************************************************************* 9968 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 9969 */ 9970 9971 static struct drm_privacy_screen *lcdshadow_dev; 9972 static acpi_handle lcdshadow_get_handle; 9973 static acpi_handle lcdshadow_set_handle; 9974 9975 static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv, 9976 enum drm_privacy_screen_status state) 9977 { 9978 int output; 9979 9980 if (WARN_ON(!mutex_is_locked(&priv->lock))) 9981 return -EIO; 9982 9983 if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state)) 9984 return -EIO; 9985 9986 priv->hw_state = priv->sw_state = state; 9987 return 0; 9988 } 9989 9990 static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv) 9991 { 9992 int output; 9993 9994 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 9995 return; 9996 9997 priv->hw_state = priv->sw_state = output & 0x1; 9998 } 9999 10000 static const struct drm_privacy_screen_ops lcdshadow_ops = { 10001 .set_sw_state = lcdshadow_set_sw_state, 10002 .get_hw_state = lcdshadow_get_hw_state, 10003 }; 10004 10005 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 10006 { 10007 acpi_status status1, status2; 10008 int output; 10009 10010 status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle); 10011 status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle); 10012 if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2)) 10013 return 0; 10014 10015 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 10016 return -EIO; 10017 10018 if (!(output & 0x10000)) 10019 return 0; 10020 10021 lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev, 10022 &lcdshadow_ops, NULL); 10023 if (IS_ERR(lcdshadow_dev)) 10024 return PTR_ERR(lcdshadow_dev); 10025 10026 return 0; 10027 } 10028 10029 static void lcdshadow_exit(void) 10030 { 10031 drm_privacy_screen_unregister(lcdshadow_dev); 10032 } 10033 10034 static void lcdshadow_resume(void) 10035 { 10036 if (!lcdshadow_dev) 10037 return; 10038 10039 mutex_lock(&lcdshadow_dev->lock); 10040 lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state); 10041 mutex_unlock(&lcdshadow_dev->lock); 10042 } 10043 10044 static int lcdshadow_read(struct seq_file *m) 10045 { 10046 if (!lcdshadow_dev) { 10047 seq_puts(m, "status:\t\tnot supported\n"); 10048 } else { 10049 seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state); 10050 seq_puts(m, "commands:\t0, 1\n"); 10051 } 10052 10053 return 0; 10054 } 10055 10056 static int lcdshadow_write(char *buf) 10057 { 10058 char *cmd; 10059 int res, state = -EINVAL; 10060 10061 if (!lcdshadow_dev) 10062 return -ENODEV; 10063 10064 while ((cmd = strsep(&buf, ","))) { 10065 res = kstrtoint(cmd, 10, &state); 10066 if (res < 0) 10067 return res; 10068 } 10069 10070 if (state >= 2 || state < 0) 10071 return -EINVAL; 10072 10073 mutex_lock(&lcdshadow_dev->lock); 10074 res = lcdshadow_set_sw_state(lcdshadow_dev, state); 10075 mutex_unlock(&lcdshadow_dev->lock); 10076 10077 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 10078 10079 return res; 10080 } 10081 10082 static struct ibm_struct lcdshadow_driver_data = { 10083 .name = "lcdshadow", 10084 .exit = lcdshadow_exit, 10085 .resume = lcdshadow_resume, 10086 .read = lcdshadow_read, 10087 .write = lcdshadow_write, 10088 }; 10089 10090 /************************************************************************* 10091 * Thinkpad sensor interfaces 10092 */ 10093 10094 #define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ 10095 #define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ 10096 #define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ 10097 #define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ 10098 10099 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 10100 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 10101 10102 #define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */ 10103 #define PALMSENSOR_ON_BIT 1 /* psensor status */ 10104 10105 static bool has_palmsensor; 10106 static bool has_lapsensor; 10107 static bool palm_state; 10108 static bool lap_state; 10109 static int dytc_version; 10110 10111 static int dytc_command(int command, int *output) 10112 { 10113 acpi_handle dytc_handle; 10114 10115 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 10116 /* Platform doesn't support DYTC */ 10117 return -ENODEV; 10118 } 10119 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 10120 return -EIO; 10121 return 0; 10122 } 10123 10124 static int lapsensor_get(bool *present, bool *state) 10125 { 10126 int output, err; 10127 10128 *present = false; 10129 err = dytc_command(DYTC_CMD_GET, &output); 10130 if (err) 10131 return err; 10132 10133 *present = true; /*If we get his far, we have lapmode support*/ 10134 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 10135 return 0; 10136 } 10137 10138 static int palmsensor_get(bool *present, bool *state) 10139 { 10140 acpi_handle psensor_handle; 10141 int output; 10142 10143 *present = false; 10144 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle))) 10145 return -ENODEV; 10146 if (!acpi_evalf(psensor_handle, &output, NULL, "d")) 10147 return -EIO; 10148 10149 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false; 10150 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false; 10151 return 0; 10152 } 10153 10154 static void lapsensor_refresh(void) 10155 { 10156 bool state; 10157 int err; 10158 10159 if (has_lapsensor) { 10160 err = lapsensor_get(&has_lapsensor, &state); 10161 if (err) 10162 return; 10163 if (lap_state != state) { 10164 lap_state = state; 10165 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 10166 } 10167 } 10168 } 10169 10170 static void palmsensor_refresh(void) 10171 { 10172 bool state; 10173 int err; 10174 10175 if (has_palmsensor) { 10176 err = palmsensor_get(&has_palmsensor, &state); 10177 if (err) 10178 return; 10179 if (palm_state != state) { 10180 palm_state = state; 10181 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor"); 10182 } 10183 } 10184 } 10185 10186 static ssize_t dytc_lapmode_show(struct device *dev, 10187 struct device_attribute *attr, 10188 char *buf) 10189 { 10190 if (has_lapsensor) 10191 return sysfs_emit(buf, "%d\n", lap_state); 10192 return sysfs_emit(buf, "\n"); 10193 } 10194 static DEVICE_ATTR_RO(dytc_lapmode); 10195 10196 static ssize_t palmsensor_show(struct device *dev, 10197 struct device_attribute *attr, 10198 char *buf) 10199 { 10200 if (has_palmsensor) 10201 return sysfs_emit(buf, "%d\n", palm_state); 10202 return sysfs_emit(buf, "\n"); 10203 } 10204 static DEVICE_ATTR_RO(palmsensor); 10205 10206 static struct attribute *proxsensor_attributes[] = { 10207 &dev_attr_dytc_lapmode.attr, 10208 &dev_attr_palmsensor.attr, 10209 NULL 10210 }; 10211 10212 static umode_t proxsensor_attr_is_visible(struct kobject *kobj, 10213 struct attribute *attr, int n) 10214 { 10215 if (attr == &dev_attr_dytc_lapmode.attr) { 10216 /* 10217 * Platforms before DYTC version 5 claim to have a lap sensor, 10218 * but it doesn't work, so we ignore them. 10219 */ 10220 if (!has_lapsensor || dytc_version < 5) 10221 return 0; 10222 } else if (attr == &dev_attr_palmsensor.attr) { 10223 if (!has_palmsensor) 10224 return 0; 10225 } 10226 10227 return attr->mode; 10228 } 10229 10230 static const struct attribute_group proxsensor_attr_group = { 10231 .is_visible = proxsensor_attr_is_visible, 10232 .attrs = proxsensor_attributes, 10233 }; 10234 10235 static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm) 10236 { 10237 int palm_err, lap_err; 10238 10239 palm_err = palmsensor_get(&has_palmsensor, &palm_state); 10240 lap_err = lapsensor_get(&has_lapsensor, &lap_state); 10241 /* If support isn't available for both devices return -ENODEV */ 10242 if ((palm_err == -ENODEV) && (lap_err == -ENODEV)) 10243 return -ENODEV; 10244 /* Otherwise, if there was an error return it */ 10245 if (palm_err && (palm_err != -ENODEV)) 10246 return palm_err; 10247 if (lap_err && (lap_err != -ENODEV)) 10248 return lap_err; 10249 10250 return 0; 10251 } 10252 10253 static struct ibm_struct proxsensor_driver_data = { 10254 .name = "proximity-sensor", 10255 }; 10256 10257 /************************************************************************* 10258 * DYTC Platform Profile interface 10259 */ 10260 10261 #define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ 10262 #define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */ 10263 #define DYTC_CMD_RESET 0x1ff /* To reset back to default */ 10264 10265 #define DYTC_CMD_FUNC_CAP 3 /* To get DYTC capabilities */ 10266 #define DYTC_FC_MMC 27 /* MMC Mode supported */ 10267 #define DYTC_FC_PSC 29 /* PSC Mode supported */ 10268 #define DYTC_FC_AMT 31 /* AMT mode supported */ 10269 10270 #define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ 10271 #define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ 10272 10273 #define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ 10274 #define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ 10275 #define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ 10276 10277 #define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ 10278 #define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ 10279 #define DYTC_FUNCTION_MMC 11 /* Function = 11, MMC mode */ 10280 #define DYTC_FUNCTION_PSC 13 /* Function = 13, PSC mode */ 10281 #define DYTC_FUNCTION_AMT 15 /* Function = 15, AMT mode */ 10282 10283 #define DYTC_MODE_AMT_ENABLE 0x1 /* Enable AMT (in balanced mode) */ 10284 #define DYTC_MODE_AMT_DISABLE 0xF /* Disable AMT (in other modes) */ 10285 10286 #define DYTC_MODE_MMC_PERFORM 2 /* High power mode aka performance */ 10287 #define DYTC_MODE_MMC_LOWPOWER 3 /* Low power mode */ 10288 #define DYTC_MODE_MMC_BALANCE 0xF /* Default mode aka balanced */ 10289 #define DYTC_MODE_MMC_DEFAULT 0 /* Default mode from MMC_GET, aka balanced */ 10290 10291 #define DYTC_MODE_PSC_LOWPOWER 3 /* Low power mode */ 10292 #define DYTC_MODE_PSC_BALANCE 5 /* Default mode aka balanced */ 10293 #define DYTC_MODE_PSC_PERFORM 7 /* High power mode aka performance */ 10294 10295 #define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */ 10296 #define DYTC_ERR_SUCCESS 1 /* CMD completed successful */ 10297 10298 #define DYTC_SET_COMMAND(function, mode, on) \ 10299 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ 10300 (mode) << DYTC_SET_MODE_BIT | \ 10301 (on) << DYTC_SET_VALID_BIT) 10302 10303 #define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 0) 10304 #define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 1) 10305 static int dytc_control_amt(bool enable); 10306 static bool dytc_amt_active; 10307 10308 static enum platform_profile_option dytc_current_profile; 10309 static atomic_t dytc_ignore_event = ATOMIC_INIT(0); 10310 static DEFINE_MUTEX(dytc_mutex); 10311 static int dytc_capabilities; 10312 static bool dytc_mmc_get_available; 10313 10314 static int convert_dytc_to_profile(int dytcmode, enum platform_profile_option *profile) 10315 { 10316 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10317 switch (dytcmode) { 10318 case DYTC_MODE_MMC_LOWPOWER: 10319 *profile = PLATFORM_PROFILE_LOW_POWER; 10320 break; 10321 case DYTC_MODE_MMC_DEFAULT: 10322 case DYTC_MODE_MMC_BALANCE: 10323 *profile = PLATFORM_PROFILE_BALANCED; 10324 break; 10325 case DYTC_MODE_MMC_PERFORM: 10326 *profile = PLATFORM_PROFILE_PERFORMANCE; 10327 break; 10328 default: /* Unknown mode */ 10329 return -EINVAL; 10330 } 10331 return 0; 10332 } 10333 if (dytc_capabilities & BIT(DYTC_FC_PSC)) { 10334 switch (dytcmode) { 10335 case DYTC_MODE_PSC_LOWPOWER: 10336 *profile = PLATFORM_PROFILE_LOW_POWER; 10337 break; 10338 case DYTC_MODE_PSC_BALANCE: 10339 *profile = PLATFORM_PROFILE_BALANCED; 10340 break; 10341 case DYTC_MODE_PSC_PERFORM: 10342 *profile = PLATFORM_PROFILE_PERFORMANCE; 10343 break; 10344 default: /* Unknown mode */ 10345 return -EINVAL; 10346 } 10347 } 10348 return 0; 10349 } 10350 10351 static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) 10352 { 10353 switch (profile) { 10354 case PLATFORM_PROFILE_LOW_POWER: 10355 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10356 *perfmode = DYTC_MODE_MMC_LOWPOWER; 10357 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10358 *perfmode = DYTC_MODE_PSC_LOWPOWER; 10359 break; 10360 case PLATFORM_PROFILE_BALANCED: 10361 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10362 *perfmode = DYTC_MODE_MMC_BALANCE; 10363 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10364 *perfmode = DYTC_MODE_PSC_BALANCE; 10365 break; 10366 case PLATFORM_PROFILE_PERFORMANCE: 10367 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10368 *perfmode = DYTC_MODE_MMC_PERFORM; 10369 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10370 *perfmode = DYTC_MODE_PSC_PERFORM; 10371 break; 10372 default: /* Unknown profile */ 10373 return -EOPNOTSUPP; 10374 } 10375 return 0; 10376 } 10377 10378 /* 10379 * dytc_profile_get: Function to register with platform_profile 10380 * handler. Returns current platform profile. 10381 */ 10382 static int dytc_profile_get(struct platform_profile_handler *pprof, 10383 enum platform_profile_option *profile) 10384 { 10385 *profile = dytc_current_profile; 10386 return 0; 10387 } 10388 10389 static int dytc_control_amt(bool enable) 10390 { 10391 int dummy; 10392 int err; 10393 int cmd; 10394 10395 if (!(dytc_capabilities & BIT(DYTC_FC_AMT))) { 10396 pr_warn("Attempting to toggle AMT on a system that doesn't advertise support\n"); 10397 return -ENODEV; 10398 } 10399 10400 if (enable) 10401 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_ENABLE, enable); 10402 else 10403 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_DISABLE, enable); 10404 10405 pr_debug("%sabling AMT (cmd 0x%x)", enable ? "en":"dis", cmd); 10406 err = dytc_command(cmd, &dummy); 10407 if (err) 10408 return err; 10409 dytc_amt_active = enable; 10410 return 0; 10411 } 10412 10413 /* 10414 * Helper function - check if we are in CQL mode and if we are 10415 * - disable CQL, 10416 * - run the command 10417 * - enable CQL 10418 * If not in CQL mode, just run the command 10419 */ 10420 static int dytc_cql_command(int command, int *output) 10421 { 10422 int err, cmd_err, dummy; 10423 int cur_funcmode; 10424 10425 /* Determine if we are in CQL mode. This alters the commands we do */ 10426 err = dytc_command(DYTC_CMD_GET, output); 10427 if (err) 10428 return err; 10429 10430 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10431 /* Check if we're OK to return immediately */ 10432 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) 10433 return 0; 10434 10435 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10436 atomic_inc(&dytc_ignore_event); 10437 err = dytc_command(DYTC_DISABLE_CQL, &dummy); 10438 if (err) 10439 return err; 10440 } 10441 10442 cmd_err = dytc_command(command, output); 10443 /* Check return condition after we've restored CQL state */ 10444 10445 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10446 err = dytc_command(DYTC_ENABLE_CQL, &dummy); 10447 if (err) 10448 return err; 10449 } 10450 return cmd_err; 10451 } 10452 10453 /* 10454 * dytc_profile_set: Function to register with platform_profile 10455 * handler. Sets current platform profile. 10456 */ 10457 static int dytc_profile_set(struct platform_profile_handler *pprof, 10458 enum platform_profile_option profile) 10459 { 10460 int perfmode; 10461 int output; 10462 int err; 10463 10464 err = mutex_lock_interruptible(&dytc_mutex); 10465 if (err) 10466 return err; 10467 10468 err = convert_profile_to_dytc(profile, &perfmode); 10469 if (err) 10470 goto unlock; 10471 10472 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10473 if (profile == PLATFORM_PROFILE_BALANCED) { 10474 /* 10475 * To get back to balanced mode we need to issue a reset command. 10476 * Note we still need to disable CQL mode before hand and re-enable 10477 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays 10478 * stuck at 0 for aprox. 30 minutes. 10479 */ 10480 err = dytc_cql_command(DYTC_CMD_RESET, &output); 10481 if (err) 10482 goto unlock; 10483 } else { 10484 /* Determine if we are in CQL mode. This alters the commands we do */ 10485 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), 10486 &output); 10487 if (err) 10488 goto unlock; 10489 } 10490 } 10491 if (dytc_capabilities & BIT(DYTC_FC_PSC)) { 10492 err = dytc_command(DYTC_SET_COMMAND(DYTC_FUNCTION_PSC, perfmode, 1), &output); 10493 if (err) 10494 goto unlock; 10495 /* system supports AMT, activate it when on balanced */ 10496 if (dytc_capabilities & BIT(DYTC_FC_AMT)) 10497 dytc_control_amt(profile == PLATFORM_PROFILE_BALANCED); 10498 } 10499 /* Success - update current profile */ 10500 dytc_current_profile = profile; 10501 unlock: 10502 mutex_unlock(&dytc_mutex); 10503 return err; 10504 } 10505 10506 static void dytc_profile_refresh(void) 10507 { 10508 enum platform_profile_option profile; 10509 int output, err = 0; 10510 int perfmode; 10511 10512 mutex_lock(&dytc_mutex); 10513 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10514 if (dytc_mmc_get_available) 10515 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10516 else 10517 err = dytc_cql_command(DYTC_CMD_GET, &output); 10518 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10519 err = dytc_command(DYTC_CMD_GET, &output); 10520 10521 mutex_unlock(&dytc_mutex); 10522 if (err) 10523 return; 10524 10525 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; 10526 convert_dytc_to_profile(perfmode, &profile); 10527 if (profile != dytc_current_profile) { 10528 dytc_current_profile = profile; 10529 platform_profile_notify(); 10530 } 10531 } 10532 10533 static struct platform_profile_handler dytc_profile = { 10534 .profile_get = dytc_profile_get, 10535 .profile_set = dytc_profile_set, 10536 }; 10537 10538 static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) 10539 { 10540 int err, output; 10541 10542 /* Setup supported modes */ 10543 set_bit(PLATFORM_PROFILE_LOW_POWER, dytc_profile.choices); 10544 set_bit(PLATFORM_PROFILE_BALANCED, dytc_profile.choices); 10545 set_bit(PLATFORM_PROFILE_PERFORMANCE, dytc_profile.choices); 10546 10547 err = dytc_command(DYTC_CMD_QUERY, &output); 10548 if (err) 10549 return err; 10550 10551 if (output & BIT(DYTC_QUERY_ENABLE_BIT)) 10552 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; 10553 10554 /* Check DYTC is enabled and supports mode setting */ 10555 if (dytc_version < 5) 10556 return -ENODEV; 10557 10558 /* Check what capabilities are supported */ 10559 err = dytc_command(DYTC_CMD_FUNC_CAP, &dytc_capabilities); 10560 if (err) 10561 return err; 10562 10563 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { /* MMC MODE */ 10564 pr_debug("MMC is supported\n"); 10565 /* 10566 * Check if MMC_GET functionality available 10567 * Version > 6 and return success from MMC_GET command 10568 */ 10569 dytc_mmc_get_available = false; 10570 if (dytc_version >= 6) { 10571 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10572 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS)) 10573 dytc_mmc_get_available = true; 10574 } 10575 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { /* PSC MODE */ 10576 /* Support for this only works on AMD platforms */ 10577 if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) { 10578 dbg_printk(TPACPI_DBG_INIT, "PSC not support on Intel platforms\n"); 10579 return -ENODEV; 10580 } 10581 pr_debug("PSC is supported\n"); 10582 } else { 10583 dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n"); 10584 return -ENODEV; 10585 } 10586 10587 dbg_printk(TPACPI_DBG_INIT, 10588 "DYTC version %d: thermal mode available\n", dytc_version); 10589 10590 /* Create platform_profile structure and register */ 10591 err = platform_profile_register(&dytc_profile); 10592 /* 10593 * If for some reason platform_profiles aren't enabled 10594 * don't quit terminally. 10595 */ 10596 if (err) 10597 return -ENODEV; 10598 10599 /* Ensure initial values are correct */ 10600 dytc_profile_refresh(); 10601 10602 /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */ 10603 if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10604 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); 10605 10606 return 0; 10607 } 10608 10609 static void dytc_profile_exit(void) 10610 { 10611 platform_profile_remove(); 10612 } 10613 10614 static struct ibm_struct dytc_profile_driver_data = { 10615 .name = "dytc-profile", 10616 .exit = dytc_profile_exit, 10617 }; 10618 10619 /************************************************************************* 10620 * Keyboard language interface 10621 */ 10622 10623 struct keyboard_lang_data { 10624 const char *lang_str; 10625 int lang_code; 10626 }; 10627 10628 static const struct keyboard_lang_data keyboard_lang_data[] = { 10629 {"be", 0x080c}, 10630 {"cz", 0x0405}, 10631 {"da", 0x0406}, 10632 {"de", 0x0c07}, 10633 {"en", 0x0000}, 10634 {"es", 0x2c0a}, 10635 {"et", 0x0425}, 10636 {"fr", 0x040c}, 10637 {"fr-ch", 0x100c}, 10638 {"hu", 0x040e}, 10639 {"it", 0x0410}, 10640 {"jp", 0x0411}, 10641 {"nl", 0x0413}, 10642 {"nn", 0x0414}, 10643 {"pl", 0x0415}, 10644 {"pt", 0x0816}, 10645 {"sl", 0x041b}, 10646 {"sv", 0x081d}, 10647 {"tr", 0x041f}, 10648 }; 10649 10650 static int set_keyboard_lang_command(int command) 10651 { 10652 acpi_handle sskl_handle; 10653 int output; 10654 10655 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) { 10656 /* Platform doesn't support SSKL */ 10657 return -ENODEV; 10658 } 10659 10660 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command)) 10661 return -EIO; 10662 10663 return 0; 10664 } 10665 10666 static int get_keyboard_lang(int *output) 10667 { 10668 acpi_handle gskl_handle; 10669 int kbd_lang; 10670 10671 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) { 10672 /* Platform doesn't support GSKL */ 10673 return -ENODEV; 10674 } 10675 10676 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000)) 10677 return -EIO; 10678 10679 /* 10680 * METHOD_ERR gets returned on devices where there are no special (e.g. '=', 10681 * '(' and ')') keys which use layout dependent key-press emulation. 10682 */ 10683 if (kbd_lang & METHOD_ERR) 10684 return -ENODEV; 10685 10686 *output = kbd_lang; 10687 10688 return 0; 10689 } 10690 10691 /* sysfs keyboard language entry */ 10692 static ssize_t keyboard_lang_show(struct device *dev, 10693 struct device_attribute *attr, 10694 char *buf) 10695 { 10696 int output, err, i, len = 0; 10697 10698 err = get_keyboard_lang(&output); 10699 if (err) 10700 return err; 10701 10702 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10703 if (i) 10704 len += sysfs_emit_at(buf, len, "%s", " "); 10705 10706 if (output == keyboard_lang_data[i].lang_code) { 10707 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str); 10708 } else { 10709 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str); 10710 } 10711 } 10712 len += sysfs_emit_at(buf, len, "\n"); 10713 10714 return len; 10715 } 10716 10717 static ssize_t keyboard_lang_store(struct device *dev, 10718 struct device_attribute *attr, 10719 const char *buf, size_t count) 10720 { 10721 int err, i; 10722 bool lang_found = false; 10723 int lang_code = 0; 10724 10725 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10726 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) { 10727 lang_code = keyboard_lang_data[i].lang_code; 10728 lang_found = true; 10729 break; 10730 } 10731 } 10732 10733 if (lang_found) { 10734 lang_code = lang_code | 1 << 24; 10735 10736 /* Set language code */ 10737 err = set_keyboard_lang_command(lang_code); 10738 if (err) 10739 return err; 10740 } else { 10741 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n"); 10742 return -EINVAL; 10743 } 10744 10745 tpacpi_disclose_usertask(attr->attr.name, 10746 "keyboard language is set to %s\n", buf); 10747 10748 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang"); 10749 10750 return count; 10751 } 10752 static DEVICE_ATTR_RW(keyboard_lang); 10753 10754 static struct attribute *kbdlang_attributes[] = { 10755 &dev_attr_keyboard_lang.attr, 10756 NULL 10757 }; 10758 10759 static umode_t kbdlang_attr_is_visible(struct kobject *kobj, 10760 struct attribute *attr, int n) 10761 { 10762 return tp_features.kbd_lang ? attr->mode : 0; 10763 } 10764 10765 static const struct attribute_group kbdlang_attr_group = { 10766 .is_visible = kbdlang_attr_is_visible, 10767 .attrs = kbdlang_attributes, 10768 }; 10769 10770 static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm) 10771 { 10772 int err, output; 10773 10774 err = get_keyboard_lang(&output); 10775 tp_features.kbd_lang = !err; 10776 return err; 10777 } 10778 10779 static struct ibm_struct kbdlang_driver_data = { 10780 .name = "kbdlang", 10781 }; 10782 10783 /************************************************************************* 10784 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN 10785 * and WLAN feature. 10786 */ 10787 #define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000 10788 #define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4) 10789 #define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8) 10790 static bool has_antennatype; 10791 static int wwan_antennatype; 10792 10793 static int dprc_command(int command, int *output) 10794 { 10795 acpi_handle dprc_handle; 10796 10797 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) { 10798 /* Platform doesn't support DPRC */ 10799 return -ENODEV; 10800 } 10801 10802 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command)) 10803 return -EIO; 10804 10805 /* 10806 * METHOD_ERR gets returned on devices where few commands are not supported 10807 * for example command to get WWAN Antenna type command is not supported on 10808 * some devices. 10809 */ 10810 if (*output & METHOD_ERR) 10811 return -ENODEV; 10812 10813 return 0; 10814 } 10815 10816 static int get_wwan_antenna(int *wwan_antennatype) 10817 { 10818 int output, err; 10819 10820 /* Get current Antenna type */ 10821 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output); 10822 if (err) 10823 return err; 10824 10825 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT) 10826 *wwan_antennatype = 1; 10827 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT) 10828 *wwan_antennatype = 2; 10829 else 10830 return -ENODEV; 10831 10832 return 0; 10833 } 10834 10835 /* sysfs wwan antenna type entry */ 10836 static ssize_t wwan_antenna_type_show(struct device *dev, 10837 struct device_attribute *attr, 10838 char *buf) 10839 { 10840 switch (wwan_antennatype) { 10841 case 1: 10842 return sysfs_emit(buf, "type a\n"); 10843 case 2: 10844 return sysfs_emit(buf, "type b\n"); 10845 default: 10846 return -ENODATA; 10847 } 10848 } 10849 static DEVICE_ATTR_RO(wwan_antenna_type); 10850 10851 static struct attribute *dprc_attributes[] = { 10852 &dev_attr_wwan_antenna_type.attr, 10853 NULL 10854 }; 10855 10856 static umode_t dprc_attr_is_visible(struct kobject *kobj, 10857 struct attribute *attr, int n) 10858 { 10859 return has_antennatype ? attr->mode : 0; 10860 } 10861 10862 static const struct attribute_group dprc_attr_group = { 10863 .is_visible = dprc_attr_is_visible, 10864 .attrs = dprc_attributes, 10865 }; 10866 10867 static int tpacpi_dprc_init(struct ibm_init_struct *iibm) 10868 { 10869 int err; 10870 10871 err = get_wwan_antenna(&wwan_antennatype); 10872 if (err) 10873 return err; 10874 10875 has_antennatype = true; 10876 return 0; 10877 } 10878 10879 static struct ibm_struct dprc_driver_data = { 10880 .name = "dprc", 10881 }; 10882 10883 /* --------------------------------------------------------------------- */ 10884 10885 static struct attribute *tpacpi_driver_attributes[] = { 10886 &driver_attr_debug_level.attr, 10887 &driver_attr_version.attr, 10888 &driver_attr_interface_version.attr, 10889 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 10890 &driver_attr_wlsw_emulstate.attr, 10891 &driver_attr_bluetooth_emulstate.attr, 10892 &driver_attr_wwan_emulstate.attr, 10893 &driver_attr_uwb_emulstate.attr, 10894 #endif 10895 NULL 10896 }; 10897 10898 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 10899 static umode_t tpacpi_attr_is_visible(struct kobject *kobj, 10900 struct attribute *attr, int n) 10901 { 10902 if (attr == &driver_attr_wlsw_emulstate.attr) { 10903 if (!dbg_wlswemul) 10904 return 0; 10905 } else if (attr == &driver_attr_bluetooth_emulstate.attr) { 10906 if (!dbg_bluetoothemul) 10907 return 0; 10908 } else if (attr == &driver_attr_wwan_emulstate.attr) { 10909 if (!dbg_wwanemul) 10910 return 0; 10911 } else if (attr == &driver_attr_uwb_emulstate.attr) { 10912 if (!dbg_uwbemul) 10913 return 0; 10914 } 10915 10916 return attr->mode; 10917 } 10918 #endif 10919 10920 static const struct attribute_group tpacpi_driver_attr_group = { 10921 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 10922 .is_visible = tpacpi_attr_is_visible, 10923 #endif 10924 .attrs = tpacpi_driver_attributes, 10925 }; 10926 10927 static const struct attribute_group *tpacpi_driver_groups[] = { 10928 &tpacpi_driver_attr_group, 10929 NULL, 10930 }; 10931 10932 static const struct attribute_group *tpacpi_groups[] = { 10933 &adaptive_kbd_attr_group, 10934 &hotkey_attr_group, 10935 &bluetooth_attr_group, 10936 &wan_attr_group, 10937 &cmos_attr_group, 10938 &proxsensor_attr_group, 10939 &kbdlang_attr_group, 10940 &dprc_attr_group, 10941 NULL, 10942 }; 10943 10944 static const struct attribute_group *tpacpi_hwmon_groups[] = { 10945 &thermal_attr_group, 10946 &temp_label_attr_group, 10947 &fan_attr_group, 10948 NULL, 10949 }; 10950 10951 static const struct attribute_group *tpacpi_hwmon_driver_groups[] = { 10952 &fan_driver_attr_group, 10953 NULL, 10954 }; 10955 10956 /**************************************************************************** 10957 **************************************************************************** 10958 * 10959 * Platform drivers 10960 * 10961 **************************************************************************** 10962 ****************************************************************************/ 10963 10964 static struct platform_driver tpacpi_pdriver = { 10965 .driver = { 10966 .name = TPACPI_DRVR_NAME, 10967 .pm = &tpacpi_pm, 10968 .groups = tpacpi_driver_groups, 10969 .dev_groups = tpacpi_groups, 10970 }, 10971 .shutdown = tpacpi_shutdown_handler, 10972 }; 10973 10974 static struct platform_driver tpacpi_hwmon_pdriver = { 10975 .driver = { 10976 .name = TPACPI_HWMON_DRVR_NAME, 10977 .groups = tpacpi_hwmon_driver_groups, 10978 }, 10979 }; 10980 10981 /**************************************************************************** 10982 **************************************************************************** 10983 * 10984 * Infrastructure 10985 * 10986 **************************************************************************** 10987 ****************************************************************************/ 10988 10989 /* 10990 * HKEY event callout for other subdrivers go here 10991 * (yes, it is ugly, but it is quick, safe, and gets the job done 10992 */ 10993 static void tpacpi_driver_event(const unsigned int hkey_event) 10994 { 10995 if (ibm_backlight_device) { 10996 switch (hkey_event) { 10997 case TP_HKEY_EV_BRGHT_UP: 10998 case TP_HKEY_EV_BRGHT_DOWN: 10999 tpacpi_brightness_notify_change(); 11000 } 11001 } 11002 if (alsa_card) { 11003 switch (hkey_event) { 11004 case TP_HKEY_EV_VOL_UP: 11005 case TP_HKEY_EV_VOL_DOWN: 11006 case TP_HKEY_EV_VOL_MUTE: 11007 volume_alsa_notify_change(); 11008 } 11009 } 11010 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 11011 enum led_brightness brightness; 11012 11013 mutex_lock(&kbdlight_mutex); 11014 11015 /* 11016 * Check the brightness actually changed, setting the brightness 11017 * through kbdlight_set_level() also triggers this event. 11018 */ 11019 brightness = kbdlight_sysfs_get(NULL); 11020 if (kbdlight_brightness != brightness) { 11021 kbdlight_brightness = brightness; 11022 led_classdev_notify_brightness_hw_changed( 11023 &tpacpi_led_kbdlight.led_classdev, brightness); 11024 } 11025 11026 mutex_unlock(&kbdlight_mutex); 11027 } 11028 11029 if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) { 11030 lapsensor_refresh(); 11031 /* If we are already accessing DYTC then skip dytc update */ 11032 if (!atomic_add_unless(&dytc_ignore_event, -1, 0)) 11033 dytc_profile_refresh(); 11034 } 11035 11036 if (lcdshadow_dev && hkey_event == TP_HKEY_EV_PRIVACYGUARD_TOGGLE) { 11037 enum drm_privacy_screen_status old_hw_state; 11038 bool changed; 11039 11040 mutex_lock(&lcdshadow_dev->lock); 11041 old_hw_state = lcdshadow_dev->hw_state; 11042 lcdshadow_get_hw_state(lcdshadow_dev); 11043 changed = lcdshadow_dev->hw_state != old_hw_state; 11044 mutex_unlock(&lcdshadow_dev->lock); 11045 11046 if (changed) 11047 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 11048 } 11049 if (hkey_event == TP_HKEY_EV_AMT_TOGGLE) { 11050 /* If we're enabling AMT we need to force balanced mode */ 11051 if (!dytc_amt_active) 11052 /* This will also set AMT mode enabled */ 11053 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); 11054 else 11055 dytc_control_amt(!dytc_amt_active); 11056 } 11057 11058 } 11059 11060 static void hotkey_driver_event(const unsigned int scancode) 11061 { 11062 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 11063 } 11064 11065 /* --------------------------------------------------------------------- */ 11066 11067 /* /proc support */ 11068 static struct proc_dir_entry *proc_dir; 11069 11070 /* 11071 * Module and infrastructure proble, init and exit handling 11072 */ 11073 11074 static bool force_load; 11075 11076 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 11077 static const char * __init str_supported(int is_supported) 11078 { 11079 static char text_unsupported[] __initdata = "not supported"; 11080 11081 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 11082 } 11083 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 11084 11085 static void ibm_exit(struct ibm_struct *ibm) 11086 { 11087 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 11088 11089 list_del_init(&ibm->all_drivers); 11090 11091 if (ibm->flags.acpi_notify_installed) { 11092 dbg_printk(TPACPI_DBG_EXIT, 11093 "%s: acpi_remove_notify_handler\n", ibm->name); 11094 BUG_ON(!ibm->acpi); 11095 acpi_remove_notify_handler(*ibm->acpi->handle, 11096 ibm->acpi->type, 11097 dispatch_acpi_notify); 11098 ibm->flags.acpi_notify_installed = 0; 11099 } 11100 11101 if (ibm->flags.proc_created) { 11102 dbg_printk(TPACPI_DBG_EXIT, 11103 "%s: remove_proc_entry\n", ibm->name); 11104 remove_proc_entry(ibm->name, proc_dir); 11105 ibm->flags.proc_created = 0; 11106 } 11107 11108 if (ibm->flags.acpi_driver_registered) { 11109 dbg_printk(TPACPI_DBG_EXIT, 11110 "%s: acpi_bus_unregister_driver\n", ibm->name); 11111 BUG_ON(!ibm->acpi); 11112 acpi_bus_unregister_driver(ibm->acpi->driver); 11113 kfree(ibm->acpi->driver); 11114 ibm->acpi->driver = NULL; 11115 ibm->flags.acpi_driver_registered = 0; 11116 } 11117 11118 if (ibm->flags.init_called && ibm->exit) { 11119 ibm->exit(); 11120 ibm->flags.init_called = 0; 11121 } 11122 11123 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 11124 } 11125 11126 static int __init ibm_init(struct ibm_init_struct *iibm) 11127 { 11128 int ret; 11129 struct ibm_struct *ibm = iibm->data; 11130 struct proc_dir_entry *entry; 11131 11132 BUG_ON(ibm == NULL); 11133 11134 INIT_LIST_HEAD(&ibm->all_drivers); 11135 11136 if (ibm->flags.experimental && !experimental) 11137 return 0; 11138 11139 dbg_printk(TPACPI_DBG_INIT, 11140 "probing for %s\n", ibm->name); 11141 11142 if (iibm->init) { 11143 ret = iibm->init(iibm); 11144 if (ret > 0 || ret == -ENODEV) 11145 return 0; /* subdriver functionality not available */ 11146 if (ret) 11147 return ret; 11148 11149 ibm->flags.init_called = 1; 11150 } 11151 11152 if (ibm->acpi) { 11153 if (ibm->acpi->hid) { 11154 ret = register_tpacpi_subdriver(ibm); 11155 if (ret) 11156 goto err_out; 11157 } 11158 11159 if (ibm->acpi->notify) { 11160 ret = setup_acpi_notify(ibm); 11161 if (ret == -ENODEV) { 11162 pr_notice("disabling subdriver %s\n", 11163 ibm->name); 11164 ret = 0; 11165 goto err_out; 11166 } 11167 if (ret < 0) 11168 goto err_out; 11169 } 11170 } 11171 11172 dbg_printk(TPACPI_DBG_INIT, 11173 "%s installed\n", ibm->name); 11174 11175 if (ibm->read) { 11176 umode_t mode = iibm->base_procfs_mode; 11177 11178 if (!mode) 11179 mode = S_IRUGO; 11180 if (ibm->write) 11181 mode |= S_IWUSR; 11182 entry = proc_create_data(ibm->name, mode, proc_dir, 11183 &dispatch_proc_ops, ibm); 11184 if (!entry) { 11185 pr_err("unable to create proc entry %s\n", ibm->name); 11186 ret = -ENODEV; 11187 goto err_out; 11188 } 11189 ibm->flags.proc_created = 1; 11190 } 11191 11192 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 11193 11194 return 0; 11195 11196 err_out: 11197 dbg_printk(TPACPI_DBG_INIT, 11198 "%s: at error exit path with result %d\n", 11199 ibm->name, ret); 11200 11201 ibm_exit(ibm); 11202 return (ret < 0) ? ret : 0; 11203 } 11204 11205 /* Probing */ 11206 11207 static char __init tpacpi_parse_fw_id(const char * const s, 11208 u32 *model, u16 *release) 11209 { 11210 int i; 11211 11212 if (!s || strlen(s) < 8) 11213 goto invalid; 11214 11215 for (i = 0; i < 8; i++) 11216 if (!((s[i] >= '0' && s[i] <= '9') || 11217 (s[i] >= 'A' && s[i] <= 'Z'))) 11218 goto invalid; 11219 11220 /* 11221 * Most models: xxyTkkWW (#.##c) 11222 * Ancient 570/600 and -SL lacks (#.##c) 11223 */ 11224 if (s[3] == 'T' || s[3] == 'N') { 11225 *model = TPID(s[0], s[1]); 11226 *release = TPVER(s[4], s[5]); 11227 return s[2]; 11228 11229 /* New models: xxxyTkkW (#.##c); T550 and some others */ 11230 } else if (s[4] == 'T' || s[4] == 'N') { 11231 *model = TPID3(s[0], s[1], s[2]); 11232 *release = TPVER(s[5], s[6]); 11233 return s[3]; 11234 } 11235 11236 invalid: 11237 return '\0'; 11238 } 11239 11240 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 11241 { 11242 char *ec_fw_string = (char *) private; 11243 const char *dmi_data = (const char *)dm; 11244 /* 11245 * ThinkPad Embedded Controller Program Table on newer models 11246 * 11247 * Offset | Name | Width | Description 11248 * ---------------------------------------------------- 11249 * 0x00 | Type | BYTE | 0x8C 11250 * 0x01 | Length | BYTE | 11251 * 0x02 | Handle | WORD | Varies 11252 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 11253 * 0x0A | OEM struct offset | BYTE | 0x0B 11254 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 11255 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 11256 * 0x0D | ECP version ID | STR ID | 11257 * 0x0E | ECP release date | STR ID | 11258 */ 11259 11260 /* Return if data structure not match */ 11261 if (dm->type != 140 || dm->length < 0x0F || 11262 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 11263 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 11264 dmi_data[0x0C] != 0x01) 11265 return; 11266 11267 /* fwstr is the first 8byte string */ 11268 strncpy(ec_fw_string, dmi_data + 0x0F, 8); 11269 } 11270 11271 /* returns 0 - probe ok, or < 0 - probe error. 11272 * Probe ok doesn't mean thinkpad found. 11273 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 11274 static int __must_check __init get_thinkpad_model_data( 11275 struct thinkpad_id_data *tp) 11276 { 11277 const struct dmi_device *dev = NULL; 11278 char ec_fw_string[18] = {0}; 11279 char const *s; 11280 char t; 11281 11282 if (!tp) 11283 return -EINVAL; 11284 11285 memset(tp, 0, sizeof(*tp)); 11286 11287 if (dmi_name_in_vendors("IBM")) 11288 tp->vendor = PCI_VENDOR_ID_IBM; 11289 else if (dmi_name_in_vendors("LENOVO")) 11290 tp->vendor = PCI_VENDOR_ID_LENOVO; 11291 else 11292 return 0; 11293 11294 s = dmi_get_system_info(DMI_BIOS_VERSION); 11295 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 11296 if (s && !tp->bios_version_str) 11297 return -ENOMEM; 11298 11299 /* Really ancient ThinkPad 240X will fail this, which is fine */ 11300 t = tpacpi_parse_fw_id(tp->bios_version_str, 11301 &tp->bios_model, &tp->bios_release); 11302 if (t != 'E' && t != 'C') 11303 return 0; 11304 11305 /* 11306 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 11307 * X32 or newer, all Z series; Some models must have an 11308 * up-to-date BIOS or they will not be detected. 11309 * 11310 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11311 */ 11312 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 11313 if (sscanf(dev->name, 11314 "IBM ThinkPad Embedded Controller -[%17c", 11315 ec_fw_string) == 1) { 11316 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 11317 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 11318 break; 11319 } 11320 } 11321 11322 /* Newer ThinkPads have different EC program info table */ 11323 if (!ec_fw_string[0]) 11324 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 11325 11326 if (ec_fw_string[0]) { 11327 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 11328 if (!tp->ec_version_str) 11329 return -ENOMEM; 11330 11331 t = tpacpi_parse_fw_id(ec_fw_string, 11332 &tp->ec_model, &tp->ec_release); 11333 if (t != 'H') { 11334 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 11335 ec_fw_string); 11336 pr_notice("please report this to %s\n", TPACPI_MAIL); 11337 } 11338 } 11339 11340 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 11341 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 11342 tp->model_str = kstrdup(s, GFP_KERNEL); 11343 if (!tp->model_str) 11344 return -ENOMEM; 11345 } else { 11346 s = dmi_get_system_info(DMI_BIOS_VENDOR); 11347 if (s && !(strncasecmp(s, "Lenovo", 6))) { 11348 tp->model_str = kstrdup(s, GFP_KERNEL); 11349 if (!tp->model_str) 11350 return -ENOMEM; 11351 } 11352 } 11353 11354 s = dmi_get_system_info(DMI_PRODUCT_NAME); 11355 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 11356 if (s && !tp->nummodel_str) 11357 return -ENOMEM; 11358 11359 return 0; 11360 } 11361 11362 static int __init probe_for_thinkpad(void) 11363 { 11364 int is_thinkpad; 11365 11366 if (acpi_disabled) 11367 return -ENODEV; 11368 11369 /* It would be dangerous to run the driver in this case */ 11370 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 11371 return -ENODEV; 11372 11373 /* 11374 * Non-ancient models have better DMI tagging, but very old models 11375 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 11376 */ 11377 is_thinkpad = (thinkpad_id.model_str != NULL) || 11378 (thinkpad_id.ec_model != 0) || 11379 tpacpi_is_fw_known(); 11380 11381 /* The EC handler is required */ 11382 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 11383 if (!ec_handle) { 11384 if (is_thinkpad) 11385 pr_err("Not yet supported ThinkPad detected!\n"); 11386 return -ENODEV; 11387 } 11388 11389 if (!is_thinkpad && !force_load) 11390 return -ENODEV; 11391 11392 return 0; 11393 } 11394 11395 static void __init thinkpad_acpi_init_banner(void) 11396 { 11397 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 11398 pr_info("%s\n", TPACPI_URL); 11399 11400 pr_info("ThinkPad BIOS %s, EC %s\n", 11401 (thinkpad_id.bios_version_str) ? 11402 thinkpad_id.bios_version_str : "unknown", 11403 (thinkpad_id.ec_version_str) ? 11404 thinkpad_id.ec_version_str : "unknown"); 11405 11406 BUG_ON(!thinkpad_id.vendor); 11407 11408 if (thinkpad_id.model_str) 11409 pr_info("%s %s, model %s\n", 11410 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 11411 "IBM" : ((thinkpad_id.vendor == 11412 PCI_VENDOR_ID_LENOVO) ? 11413 "Lenovo" : "Unknown vendor"), 11414 thinkpad_id.model_str, 11415 (thinkpad_id.nummodel_str) ? 11416 thinkpad_id.nummodel_str : "unknown"); 11417 } 11418 11419 /* Module init, exit, parameters */ 11420 11421 static struct ibm_init_struct ibms_init[] __initdata = { 11422 { 11423 .data = &thinkpad_acpi_driver_data, 11424 }, 11425 { 11426 .init = hotkey_init, 11427 .data = &hotkey_driver_data, 11428 }, 11429 { 11430 .init = bluetooth_init, 11431 .data = &bluetooth_driver_data, 11432 }, 11433 { 11434 .init = wan_init, 11435 .data = &wan_driver_data, 11436 }, 11437 { 11438 .init = uwb_init, 11439 .data = &uwb_driver_data, 11440 }, 11441 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 11442 { 11443 .init = video_init, 11444 .base_procfs_mode = S_IRUSR, 11445 .data = &video_driver_data, 11446 }, 11447 #endif 11448 { 11449 .init = kbdlight_init, 11450 .data = &kbdlight_driver_data, 11451 }, 11452 { 11453 .init = light_init, 11454 .data = &light_driver_data, 11455 }, 11456 { 11457 .init = cmos_init, 11458 .data = &cmos_driver_data, 11459 }, 11460 { 11461 .init = led_init, 11462 .data = &led_driver_data, 11463 }, 11464 { 11465 .init = beep_init, 11466 .data = &beep_driver_data, 11467 }, 11468 { 11469 .init = thermal_init, 11470 .data = &thermal_driver_data, 11471 }, 11472 { 11473 .init = brightness_init, 11474 .data = &brightness_driver_data, 11475 }, 11476 { 11477 .init = volume_init, 11478 .data = &volume_driver_data, 11479 }, 11480 { 11481 .init = fan_init, 11482 .data = &fan_driver_data, 11483 }, 11484 { 11485 .init = mute_led_init, 11486 .data = &mute_led_driver_data, 11487 }, 11488 { 11489 .init = tpacpi_battery_init, 11490 .data = &battery_driver_data, 11491 }, 11492 { 11493 .init = tpacpi_lcdshadow_init, 11494 .data = &lcdshadow_driver_data, 11495 }, 11496 { 11497 .init = tpacpi_proxsensor_init, 11498 .data = &proxsensor_driver_data, 11499 }, 11500 { 11501 .init = tpacpi_dytc_profile_init, 11502 .data = &dytc_profile_driver_data, 11503 }, 11504 { 11505 .init = tpacpi_kbdlang_init, 11506 .data = &kbdlang_driver_data, 11507 }, 11508 { 11509 .init = tpacpi_dprc_init, 11510 .data = &dprc_driver_data, 11511 }, 11512 }; 11513 11514 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 11515 { 11516 unsigned int i; 11517 struct ibm_struct *ibm; 11518 11519 if (!kp || !kp->name || !val) 11520 return -EINVAL; 11521 11522 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11523 ibm = ibms_init[i].data; 11524 if (!ibm || !ibm->name) 11525 continue; 11526 11527 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 11528 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 11529 return -ENOSPC; 11530 strcpy(ibms_init[i].param, val); 11531 return 0; 11532 } 11533 } 11534 11535 return -EINVAL; 11536 } 11537 11538 module_param(experimental, int, 0444); 11539 MODULE_PARM_DESC(experimental, 11540 "Enables experimental features when non-zero"); 11541 11542 module_param_named(debug, dbg_level, uint, 0); 11543 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 11544 11545 module_param(force_load, bool, 0444); 11546 MODULE_PARM_DESC(force_load, 11547 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 11548 11549 module_param_named(fan_control, fan_control_allowed, bool, 0444); 11550 MODULE_PARM_DESC(fan_control, 11551 "Enables setting fan parameters features when true"); 11552 11553 module_param_named(brightness_mode, brightness_mode, uint, 0444); 11554 MODULE_PARM_DESC(brightness_mode, 11555 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 11556 11557 module_param(brightness_enable, uint, 0444); 11558 MODULE_PARM_DESC(brightness_enable, 11559 "Enables backlight control when 1, disables when 0"); 11560 11561 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 11562 module_param_named(volume_mode, volume_mode, uint, 0444); 11563 MODULE_PARM_DESC(volume_mode, 11564 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 11565 11566 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 11567 MODULE_PARM_DESC(volume_capabilities, 11568 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 11569 11570 module_param_named(volume_control, volume_control_allowed, bool, 0444); 11571 MODULE_PARM_DESC(volume_control, 11572 "Enables software override for the console audio control when true"); 11573 11574 module_param_named(software_mute, software_mute_requested, bool, 0444); 11575 MODULE_PARM_DESC(software_mute, 11576 "Request full software mute control"); 11577 11578 /* ALSA module API parameters */ 11579 module_param_named(index, alsa_index, int, 0444); 11580 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 11581 module_param_named(id, alsa_id, charp, 0444); 11582 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 11583 module_param_named(enable, alsa_enable, bool, 0444); 11584 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 11585 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 11586 11587 /* The module parameter can't be read back, that's why 0 is used here */ 11588 #define TPACPI_PARAM(feature) \ 11589 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 11590 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 11591 11592 TPACPI_PARAM(hotkey); 11593 TPACPI_PARAM(bluetooth); 11594 TPACPI_PARAM(video); 11595 TPACPI_PARAM(light); 11596 TPACPI_PARAM(cmos); 11597 TPACPI_PARAM(led); 11598 TPACPI_PARAM(beep); 11599 TPACPI_PARAM(brightness); 11600 TPACPI_PARAM(volume); 11601 TPACPI_PARAM(fan); 11602 11603 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11604 module_param(dbg_wlswemul, uint, 0444); 11605 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 11606 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 11607 MODULE_PARM_DESC(wlsw_state, 11608 "Initial state of the emulated WLSW switch"); 11609 11610 module_param(dbg_bluetoothemul, uint, 0444); 11611 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 11612 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 11613 MODULE_PARM_DESC(bluetooth_state, 11614 "Initial state of the emulated bluetooth switch"); 11615 11616 module_param(dbg_wwanemul, uint, 0444); 11617 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 11618 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 11619 MODULE_PARM_DESC(wwan_state, 11620 "Initial state of the emulated WWAN switch"); 11621 11622 module_param(dbg_uwbemul, uint, 0444); 11623 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 11624 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 11625 MODULE_PARM_DESC(uwb_state, 11626 "Initial state of the emulated UWB switch"); 11627 #endif 11628 11629 static void thinkpad_acpi_module_exit(void) 11630 { 11631 struct ibm_struct *ibm, *itmp; 11632 11633 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 11634 11635 #ifdef CONFIG_SUSPEND 11636 if (tp_features.quirks && tp_features.quirks->s2idle_bug_mmio) 11637 acpi_unregister_lps0_dev(&thinkpad_acpi_s2idle_dev_ops); 11638 #endif 11639 if (tpacpi_hwmon) 11640 hwmon_device_unregister(tpacpi_hwmon); 11641 if (tp_features.sensors_pdrv_registered) 11642 platform_driver_unregister(&tpacpi_hwmon_pdriver); 11643 if (tp_features.platform_drv_registered) 11644 platform_driver_unregister(&tpacpi_pdriver); 11645 11646 list_for_each_entry_safe_reverse(ibm, itmp, 11647 &tpacpi_all_drivers, 11648 all_drivers) { 11649 ibm_exit(ibm); 11650 } 11651 11652 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 11653 11654 if (tpacpi_inputdev) { 11655 if (tp_features.input_device_registered) 11656 input_unregister_device(tpacpi_inputdev); 11657 else 11658 input_free_device(tpacpi_inputdev); 11659 kfree(hotkey_keycode_map); 11660 } 11661 11662 if (tpacpi_sensors_pdev) 11663 platform_device_unregister(tpacpi_sensors_pdev); 11664 if (tpacpi_pdev) 11665 platform_device_unregister(tpacpi_pdev); 11666 if (proc_dir) 11667 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 11668 if (tpacpi_wq) 11669 destroy_workqueue(tpacpi_wq); 11670 11671 kfree(thinkpad_id.bios_version_str); 11672 kfree(thinkpad_id.ec_version_str); 11673 kfree(thinkpad_id.model_str); 11674 kfree(thinkpad_id.nummodel_str); 11675 } 11676 11677 11678 static int __init thinkpad_acpi_module_init(void) 11679 { 11680 const struct dmi_system_id *dmi_id; 11681 int ret, i; 11682 11683 tpacpi_lifecycle = TPACPI_LIFE_INIT; 11684 11685 /* Driver-level probe */ 11686 11687 ret = get_thinkpad_model_data(&thinkpad_id); 11688 if (ret) { 11689 pr_err("unable to get DMI data: %d\n", ret); 11690 thinkpad_acpi_module_exit(); 11691 return ret; 11692 } 11693 ret = probe_for_thinkpad(); 11694 if (ret) { 11695 thinkpad_acpi_module_exit(); 11696 return ret; 11697 } 11698 11699 /* Driver initialization */ 11700 11701 thinkpad_acpi_init_banner(); 11702 tpacpi_check_outdated_fw(); 11703 11704 TPACPI_ACPIHANDLE_INIT(ecrd); 11705 TPACPI_ACPIHANDLE_INIT(ecwr); 11706 11707 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 11708 if (!tpacpi_wq) { 11709 thinkpad_acpi_module_exit(); 11710 return -ENOMEM; 11711 } 11712 11713 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 11714 if (!proc_dir) { 11715 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 11716 thinkpad_acpi_module_exit(); 11717 return -ENODEV; 11718 } 11719 11720 dmi_id = dmi_first_match(fwbug_list); 11721 if (dmi_id) 11722 tp_features.quirks = dmi_id->driver_data; 11723 11724 /* Device initialization */ 11725 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, PLATFORM_DEVID_NONE, 11726 NULL, 0); 11727 if (IS_ERR(tpacpi_pdev)) { 11728 ret = PTR_ERR(tpacpi_pdev); 11729 tpacpi_pdev = NULL; 11730 pr_err("unable to register platform device\n"); 11731 thinkpad_acpi_module_exit(); 11732 return ret; 11733 } 11734 tpacpi_sensors_pdev = platform_device_register_simple( 11735 TPACPI_HWMON_DRVR_NAME, 11736 PLATFORM_DEVID_NONE, NULL, 0); 11737 if (IS_ERR(tpacpi_sensors_pdev)) { 11738 ret = PTR_ERR(tpacpi_sensors_pdev); 11739 tpacpi_sensors_pdev = NULL; 11740 pr_err("unable to register hwmon platform device\n"); 11741 thinkpad_acpi_module_exit(); 11742 return ret; 11743 } 11744 11745 mutex_init(&tpacpi_inputdev_send_mutex); 11746 tpacpi_inputdev = input_allocate_device(); 11747 if (!tpacpi_inputdev) { 11748 thinkpad_acpi_module_exit(); 11749 return -ENOMEM; 11750 } else { 11751 /* Prepare input device, but don't register */ 11752 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 11753 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 11754 tpacpi_inputdev->id.bustype = BUS_HOST; 11755 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 11756 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 11757 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 11758 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 11759 } 11760 11761 /* Init subdriver dependencies */ 11762 tpacpi_detect_brightness_capabilities(); 11763 11764 /* Init subdrivers */ 11765 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11766 ret = ibm_init(&ibms_init[i]); 11767 if (ret >= 0 && *ibms_init[i].param) 11768 ret = ibms_init[i].data->write(ibms_init[i].param); 11769 if (ret < 0) { 11770 thinkpad_acpi_module_exit(); 11771 return ret; 11772 } 11773 } 11774 11775 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 11776 11777 ret = platform_driver_register(&tpacpi_pdriver); 11778 if (ret) { 11779 pr_err("unable to register main platform driver\n"); 11780 thinkpad_acpi_module_exit(); 11781 return ret; 11782 } 11783 tp_features.platform_drv_registered = 1; 11784 11785 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 11786 if (ret) { 11787 pr_err("unable to register hwmon platform driver\n"); 11788 thinkpad_acpi_module_exit(); 11789 return ret; 11790 } 11791 tp_features.sensors_pdrv_registered = 1; 11792 11793 tpacpi_hwmon = hwmon_device_register_with_groups( 11794 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, tpacpi_hwmon_groups); 11795 if (IS_ERR(tpacpi_hwmon)) { 11796 ret = PTR_ERR(tpacpi_hwmon); 11797 tpacpi_hwmon = NULL; 11798 pr_err("unable to register hwmon device\n"); 11799 thinkpad_acpi_module_exit(); 11800 return ret; 11801 } 11802 11803 ret = input_register_device(tpacpi_inputdev); 11804 if (ret < 0) { 11805 pr_err("unable to register input device\n"); 11806 thinkpad_acpi_module_exit(); 11807 return ret; 11808 } else { 11809 tp_features.input_device_registered = 1; 11810 } 11811 11812 #ifdef CONFIG_SUSPEND 11813 if (tp_features.quirks && tp_features.quirks->s2idle_bug_mmio) { 11814 if (!acpi_register_lps0_dev(&thinkpad_acpi_s2idle_dev_ops)) 11815 pr_info("Using s2idle quirk to avoid %s platform firmware bug\n", 11816 (dmi_id && dmi_id->ident) ? dmi_id->ident : ""); 11817 } 11818 #endif 11819 return 0; 11820 } 11821 11822 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 11823 11824 /* 11825 * This will autoload the driver in almost every ThinkPad 11826 * in widespread use. 11827 * 11828 * Only _VERY_ old models, like the 240, 240x and 570 lack 11829 * the HKEY event interface. 11830 */ 11831 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 11832 11833 /* 11834 * DMI matching for module autoloading 11835 * 11836 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11837 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 11838 * 11839 * Only models listed in thinkwiki will be supported, so add yours 11840 * if it is not there yet. 11841 */ 11842 #define IBM_BIOS_MODULE_ALIAS(__type) \ 11843 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 11844 11845 /* Ancient thinkpad BIOSes have to be identified by 11846 * BIOS type or model number, and there are far less 11847 * BIOS types than model numbers... */ 11848 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 11849 11850 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 11851 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 11852 MODULE_DESCRIPTION(TPACPI_DESC); 11853 MODULE_VERSION(TPACPI_VERSION); 11854 MODULE_LICENSE("GPL"); 11855 11856 module_init(thinkpad_acpi_module_init); 11857 module_exit(thinkpad_acpi_module_exit); 11858