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/kernel.h> 38 #include <linux/module.h> 39 #include <linux/init.h> 40 #include <linux/types.h> 41 #include <linux/string.h> 42 #include <linux/list.h> 43 #include <linux/mutex.h> 44 #include <linux/sched.h> 45 #include <linux/sched/signal.h> 46 #include <linux/kthread.h> 47 #include <linux/freezer.h> 48 #include <linux/delay.h> 49 #include <linux/slab.h> 50 #include <linux/nvram.h> 51 #include <linux/proc_fs.h> 52 #include <linux/seq_file.h> 53 #include <linux/sysfs.h> 54 #include <linux/backlight.h> 55 #include <linux/bitops.h> 56 #include <linux/fb.h> 57 #include <linux/platform_device.h> 58 #include <linux/hwmon.h> 59 #include <linux/hwmon-sysfs.h> 60 #include <linux/input.h> 61 #include <linux/leds.h> 62 #include <linux/rfkill.h> 63 #include <linux/dmi.h> 64 #include <linux/jiffies.h> 65 #include <linux/workqueue.h> 66 #include <linux/acpi.h> 67 #include <linux/pci.h> 68 #include <linux/power_supply.h> 69 #include <linux/platform_profile.h> 70 #include <sound/core.h> 71 #include <sound/control.h> 72 #include <sound/initval.h> 73 #include <linux/uaccess.h> 74 #include <acpi/battery.h> 75 #include <acpi/video.h> 76 #include <drm/drm_privacy_screen_driver.h> 77 #include "dual_accel_detect.h" 78 79 /* ThinkPad CMOS commands */ 80 #define TP_CMOS_VOLUME_DOWN 0 81 #define TP_CMOS_VOLUME_UP 1 82 #define TP_CMOS_VOLUME_MUTE 2 83 #define TP_CMOS_BRIGHTNESS_UP 4 84 #define TP_CMOS_BRIGHTNESS_DOWN 5 85 #define TP_CMOS_THINKLIGHT_ON 12 86 #define TP_CMOS_THINKLIGHT_OFF 13 87 88 /* NVRAM Addresses */ 89 enum tp_nvram_addr { 90 TP_NVRAM_ADDR_HK2 = 0x57, 91 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 92 TP_NVRAM_ADDR_VIDEO = 0x59, 93 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 94 TP_NVRAM_ADDR_MIXER = 0x60, 95 }; 96 97 /* NVRAM bit masks */ 98 enum { 99 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 100 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 101 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 102 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 103 TP_NVRAM_MASK_THINKLIGHT = 0x10, 104 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 105 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 106 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 107 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 108 TP_NVRAM_MASK_MUTE = 0x40, 109 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 110 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 111 TP_NVRAM_POS_LEVEL_VOLUME = 0, 112 }; 113 114 /* Misc NVRAM-related */ 115 enum { 116 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 117 }; 118 119 /* ACPI HIDs */ 120 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 121 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 122 #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 123 #define TPACPI_ACPI_EC_HID "PNP0C09" 124 125 /* Input IDs */ 126 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 127 #define TPACPI_HKEY_INPUT_VERSION 0x4101 128 129 /* ACPI \WGSV commands */ 130 enum { 131 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 132 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 133 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 134 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 135 }; 136 137 /* TP_ACPI_WGSV_GET_STATE bits */ 138 enum { 139 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 140 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 141 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 142 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 143 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 144 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 145 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 146 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 147 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 148 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 149 }; 150 151 /* HKEY events */ 152 enum tpacpi_hkey_event_t { 153 /* Hotkey-related */ 154 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ 155 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 156 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 157 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 158 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 159 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 160 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 161 TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */ 162 163 /* Reasons for waking up from S3/S4 */ 164 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 165 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 166 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 167 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 168 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 169 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 170 171 /* Auto-sleep after eject request */ 172 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 173 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 174 175 /* Misc bay events */ 176 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 177 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 178 or port replicator */ 179 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 180 dock or port replicator */ 181 /* 182 * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013 183 * when keyboard cover is attached, detached or folded onto the back 184 */ 185 TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */ 186 TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */ 187 188 /* User-interface events */ 189 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 190 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 191 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 192 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 193 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 194 * enter/leave tablet mode 195 */ 196 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 197 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 198 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 199 200 /* Key-related user-interface events */ 201 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 202 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 203 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 204 205 /* Thermal events */ 206 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 207 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 208 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 209 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 210 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ 211 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set 212 * command completed. Related to 213 * AML DYTC */ 214 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation 215 * changed. Related to AML GMTS */ 216 217 /* AC-related events */ 218 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 219 220 /* Further user-interface events */ 221 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ 222 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ 223 224 /* Misc */ 225 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 226 }; 227 228 /**************************************************************************** 229 * Main driver 230 */ 231 232 #define TPACPI_NAME "thinkpad" 233 #define TPACPI_DESC "ThinkPad ACPI Extras" 234 #define TPACPI_FILE TPACPI_NAME "_acpi" 235 #define TPACPI_URL "http://ibm-acpi.sf.net/" 236 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 237 238 #define TPACPI_PROC_DIR "ibm" 239 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 240 #define TPACPI_DRVR_NAME TPACPI_FILE 241 #define TPACPI_DRVR_SHORTNAME "tpacpi" 242 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 243 244 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 245 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 246 247 #define TPACPI_MAX_ACPI_ARGS 3 248 249 /* Debugging printk groups */ 250 #define TPACPI_DBG_ALL 0xffff 251 #define TPACPI_DBG_DISCLOSETASK 0x8000 252 #define TPACPI_DBG_INIT 0x0001 253 #define TPACPI_DBG_EXIT 0x0002 254 #define TPACPI_DBG_RFKILL 0x0004 255 #define TPACPI_DBG_HKEY 0x0008 256 #define TPACPI_DBG_FAN 0x0010 257 #define TPACPI_DBG_BRGHT 0x0020 258 #define TPACPI_DBG_MIXER 0x0040 259 260 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") 261 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") 262 #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) 263 264 265 /**************************************************************************** 266 * Driver-wide structs and misc. variables 267 */ 268 269 struct ibm_struct; 270 271 struct tp_acpi_drv_struct { 272 const struct acpi_device_id *hid; 273 struct acpi_driver *driver; 274 275 void (*notify) (struct ibm_struct *, u32); 276 acpi_handle *handle; 277 u32 type; 278 struct acpi_device *device; 279 }; 280 281 struct ibm_struct { 282 char *name; 283 284 int (*read) (struct seq_file *); 285 int (*write) (char *); 286 void (*exit) (void); 287 void (*resume) (void); 288 void (*suspend) (void); 289 void (*shutdown) (void); 290 291 struct list_head all_drivers; 292 293 struct tp_acpi_drv_struct *acpi; 294 295 struct { 296 u8 acpi_driver_registered:1; 297 u8 acpi_notify_installed:1; 298 u8 proc_created:1; 299 u8 init_called:1; 300 u8 experimental:1; 301 } flags; 302 }; 303 304 struct ibm_init_struct { 305 char param[32]; 306 307 int (*init) (struct ibm_init_struct *); 308 umode_t base_procfs_mode; 309 struct ibm_struct *data; 310 }; 311 312 static struct { 313 u32 bluetooth:1; 314 u32 hotkey:1; 315 u32 hotkey_mask:1; 316 u32 hotkey_wlsw:1; 317 enum { 318 TP_HOTKEY_TABLET_NONE = 0, 319 TP_HOTKEY_TABLET_USES_MHKG, 320 TP_HOTKEY_TABLET_USES_GMMS, 321 } hotkey_tablet; 322 u32 kbdlight:1; 323 u32 light:1; 324 u32 light_status:1; 325 u32 bright_acpimode:1; 326 u32 bright_unkfw:1; 327 u32 wan:1; 328 u32 uwb:1; 329 u32 fan_ctrl_status_undef:1; 330 u32 second_fan:1; 331 u32 second_fan_ctl:1; 332 u32 beep_needs_two_args:1; 333 u32 mixer_no_level_control:1; 334 u32 battery_force_primary:1; 335 u32 input_device_registered:1; 336 u32 platform_drv_registered:1; 337 u32 platform_drv_attrs_registered:1; 338 u32 sensors_pdrv_registered:1; 339 u32 sensors_pdrv_attrs_registered:1; 340 u32 sensors_pdev_attrs_registered:1; 341 u32 hotkey_poll_active:1; 342 u32 has_adaptive_kbd:1; 343 } tp_features; 344 345 static struct { 346 u16 hotkey_mask_ff:1; 347 u16 volume_ctrl_forbidden:1; 348 } tp_warned; 349 350 struct thinkpad_id_data { 351 unsigned int vendor; /* ThinkPad vendor: 352 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 353 354 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 355 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 356 357 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ 358 u32 ec_model; 359 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ 360 u16 ec_release; 361 362 char *model_str; /* ThinkPad T43 */ 363 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 364 }; 365 static struct thinkpad_id_data thinkpad_id; 366 367 static enum { 368 TPACPI_LIFE_INIT = 0, 369 TPACPI_LIFE_RUNNING, 370 TPACPI_LIFE_EXITING, 371 } tpacpi_lifecycle; 372 373 static int experimental; 374 static u32 dbg_level; 375 376 static struct workqueue_struct *tpacpi_wq; 377 378 enum led_status_t { 379 TPACPI_LED_OFF = 0, 380 TPACPI_LED_ON, 381 TPACPI_LED_BLINK, 382 }; 383 384 /* tpacpi LED class */ 385 struct tpacpi_led_classdev { 386 struct led_classdev led_classdev; 387 int led; 388 }; 389 390 /* brightness level capabilities */ 391 static unsigned int bright_maxlvl; /* 0 = unknown */ 392 393 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 394 static int dbg_wlswemul; 395 static bool tpacpi_wlsw_emulstate; 396 static int dbg_bluetoothemul; 397 static bool tpacpi_bluetooth_emulstate; 398 static int dbg_wwanemul; 399 static bool tpacpi_wwan_emulstate; 400 static int dbg_uwbemul; 401 static bool tpacpi_uwb_emulstate; 402 #endif 403 404 405 /************************************************************************* 406 * Debugging helpers 407 */ 408 409 #define dbg_printk(a_dbg_level, format, arg...) \ 410 do { \ 411 if (dbg_level & (a_dbg_level)) \ 412 printk(KERN_DEBUG pr_fmt("%s: " format), \ 413 __func__, ##arg); \ 414 } while (0) 415 416 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 417 #define vdbg_printk dbg_printk 418 static const char *str_supported(int is_supported); 419 #else 420 static inline const char *str_supported(int is_supported) { return ""; } 421 #define vdbg_printk(a_dbg_level, format, arg...) \ 422 do { if (0) no_printk(format, ##arg); } while (0) 423 #endif 424 425 static void tpacpi_log_usertask(const char * const what) 426 { 427 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 428 what, task_tgid_vnr(current)); 429 } 430 431 #define tpacpi_disclose_usertask(what, format, arg...) \ 432 do { \ 433 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 434 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 435 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 436 what, task_tgid_vnr(current), ## arg); \ 437 } \ 438 } while (0) 439 440 /* 441 * Quirk handling helpers 442 * 443 * ThinkPad IDs and versions seen in the field so far are 444 * two or three characters from the set [0-9A-Z], i.e. base 36. 445 * 446 * We use values well outside that range as specials. 447 */ 448 449 #define TPACPI_MATCH_ANY 0xffffffffU 450 #define TPACPI_MATCH_ANY_VERSION 0xffffU 451 #define TPACPI_MATCH_UNKNOWN 0U 452 453 /* TPID('1', 'Y') == 0x3159 */ 454 #define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) 455 #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) 456 #define TPVER TPID 457 458 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 459 { .vendor = PCI_VENDOR_ID_IBM, \ 460 .bios = TPID(__id1, __id2), \ 461 .ec = TPACPI_MATCH_ANY, \ 462 .quirks = (__quirk) } 463 464 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 465 { .vendor = PCI_VENDOR_ID_LENOVO, \ 466 .bios = TPID(__id1, __id2), \ 467 .ec = TPACPI_MATCH_ANY, \ 468 .quirks = (__quirk) } 469 470 #define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ 471 { .vendor = PCI_VENDOR_ID_LENOVO, \ 472 .bios = TPID3(__id1, __id2, __id3), \ 473 .ec = TPACPI_MATCH_ANY, \ 474 .quirks = (__quirk) } 475 476 #define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ 477 { .vendor = PCI_VENDOR_ID_IBM, \ 478 .bios = TPACPI_MATCH_ANY, \ 479 .ec = TPID(__id1, __id2), \ 480 .quirks = (__quirk) } 481 482 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 483 { .vendor = PCI_VENDOR_ID_LENOVO, \ 484 .bios = TPACPI_MATCH_ANY, \ 485 .ec = TPID(__id1, __id2), \ 486 .quirks = (__quirk) } 487 488 struct tpacpi_quirk { 489 unsigned int vendor; 490 u32 bios; 491 u32 ec; 492 unsigned long quirks; 493 }; 494 495 /** 496 * tpacpi_check_quirks() - search BIOS/EC version on a list 497 * @qlist: array of &struct tpacpi_quirk 498 * @qlist_size: number of elements in @qlist 499 * 500 * Iterates over a quirks list until one is found that matches the 501 * ThinkPad's vendor, BIOS and EC model. 502 * 503 * Returns 0 if nothing matches, otherwise returns the quirks field of 504 * the matching &struct tpacpi_quirk entry. 505 * 506 * The match criteria is: vendor, ec and bios much match. 507 */ 508 static unsigned long __init tpacpi_check_quirks( 509 const struct tpacpi_quirk *qlist, 510 unsigned int qlist_size) 511 { 512 while (qlist_size) { 513 if ((qlist->vendor == thinkpad_id.vendor || 514 qlist->vendor == TPACPI_MATCH_ANY) && 515 (qlist->bios == thinkpad_id.bios_model || 516 qlist->bios == TPACPI_MATCH_ANY) && 517 (qlist->ec == thinkpad_id.ec_model || 518 qlist->ec == TPACPI_MATCH_ANY)) 519 return qlist->quirks; 520 521 qlist_size--; 522 qlist++; 523 } 524 return 0; 525 } 526 527 static inline bool __pure __init tpacpi_is_lenovo(void) 528 { 529 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 530 } 531 532 static inline bool __pure __init tpacpi_is_ibm(void) 533 { 534 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 535 } 536 537 /**************************************************************************** 538 **************************************************************************** 539 * 540 * ACPI Helpers and device model 541 * 542 **************************************************************************** 543 ****************************************************************************/ 544 545 /************************************************************************* 546 * ACPI basic handles 547 */ 548 549 static acpi_handle root_handle; 550 static acpi_handle ec_handle; 551 552 #define TPACPI_HANDLE(object, parent, paths...) \ 553 static acpi_handle object##_handle; \ 554 static const acpi_handle * const object##_parent __initconst = \ 555 &parent##_handle; \ 556 static char *object##_paths[] __initdata = { paths } 557 558 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 559 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 560 561 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 562 /* T4x, X31, X40 */ 563 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 564 "\\CMS", /* R40, R40e */ 565 ); /* all others */ 566 567 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 568 "^HKEY", /* R30, R31 */ 569 "HKEY", /* all others */ 570 ); /* 570 */ 571 572 /************************************************************************* 573 * ACPI helpers 574 */ 575 576 static int acpi_evalf(acpi_handle handle, 577 int *res, char *method, char *fmt, ...) 578 { 579 char *fmt0 = fmt; 580 struct acpi_object_list params; 581 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 582 struct acpi_buffer result, *resultp; 583 union acpi_object out_obj; 584 acpi_status status; 585 va_list ap; 586 char res_type; 587 int success; 588 int quiet; 589 590 if (!*fmt) { 591 pr_err("acpi_evalf() called with empty format\n"); 592 return 0; 593 } 594 595 if (*fmt == 'q') { 596 quiet = 1; 597 fmt++; 598 } else 599 quiet = 0; 600 601 res_type = *(fmt++); 602 603 params.count = 0; 604 params.pointer = &in_objs[0]; 605 606 va_start(ap, fmt); 607 while (*fmt) { 608 char c = *(fmt++); 609 switch (c) { 610 case 'd': /* int */ 611 in_objs[params.count].integer.value = va_arg(ap, int); 612 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 613 break; 614 /* add more types as needed */ 615 default: 616 pr_err("acpi_evalf() called with invalid format character '%c'\n", 617 c); 618 va_end(ap); 619 return 0; 620 } 621 } 622 va_end(ap); 623 624 if (res_type != 'v') { 625 result.length = sizeof(out_obj); 626 result.pointer = &out_obj; 627 resultp = &result; 628 } else 629 resultp = NULL; 630 631 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 632 633 switch (res_type) { 634 case 'd': /* int */ 635 success = (status == AE_OK && 636 out_obj.type == ACPI_TYPE_INTEGER); 637 if (success && res) 638 *res = out_obj.integer.value; 639 break; 640 case 'v': /* void */ 641 success = status == AE_OK; 642 break; 643 /* add more types as needed */ 644 default: 645 pr_err("acpi_evalf() called with invalid format character '%c'\n", 646 res_type); 647 return 0; 648 } 649 650 if (!success && !quiet) 651 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 652 method, fmt0, acpi_format_exception(status)); 653 654 return success; 655 } 656 657 static int acpi_ec_read(int i, u8 *p) 658 { 659 int v; 660 661 if (ecrd_handle) { 662 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 663 return 0; 664 *p = v; 665 } else { 666 if (ec_read(i, p) < 0) 667 return 0; 668 } 669 670 return 1; 671 } 672 673 static int acpi_ec_write(int i, u8 v) 674 { 675 if (ecwr_handle) { 676 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 677 return 0; 678 } else { 679 if (ec_write(i, v) < 0) 680 return 0; 681 } 682 683 return 1; 684 } 685 686 static int issue_thinkpad_cmos_command(int cmos_cmd) 687 { 688 if (!cmos_handle) 689 return -ENXIO; 690 691 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 692 return -EIO; 693 694 return 0; 695 } 696 697 /************************************************************************* 698 * ACPI device model 699 */ 700 701 #define TPACPI_ACPIHANDLE_INIT(object) \ 702 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 703 object##_paths, ARRAY_SIZE(object##_paths)) 704 705 static void __init drv_acpi_handle_init(const char *name, 706 acpi_handle *handle, const acpi_handle parent, 707 char **paths, const int num_paths) 708 { 709 int i; 710 acpi_status status; 711 712 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 713 name); 714 715 for (i = 0; i < num_paths; i++) { 716 status = acpi_get_handle(parent, paths[i], handle); 717 if (ACPI_SUCCESS(status)) { 718 dbg_printk(TPACPI_DBG_INIT, 719 "Found ACPI handle %s for %s\n", 720 paths[i], name); 721 return; 722 } 723 } 724 725 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 726 name); 727 *handle = NULL; 728 } 729 730 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 731 u32 level, void *context, void **return_value) 732 { 733 struct acpi_device *dev; 734 if (!strcmp(context, "video")) { 735 if (acpi_bus_get_device(handle, &dev)) 736 return AE_OK; 737 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 738 return AE_OK; 739 } 740 741 *(acpi_handle *)return_value = handle; 742 743 return AE_CTRL_TERMINATE; 744 } 745 746 static void __init tpacpi_acpi_handle_locate(const char *name, 747 const char *hid, 748 acpi_handle *handle) 749 { 750 acpi_status status; 751 acpi_handle device_found; 752 753 BUG_ON(!name || !handle); 754 vdbg_printk(TPACPI_DBG_INIT, 755 "trying to locate ACPI handle for %s, using HID %s\n", 756 name, hid ? hid : "NULL"); 757 758 memset(&device_found, 0, sizeof(device_found)); 759 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 760 (void *)name, &device_found); 761 762 *handle = NULL; 763 764 if (ACPI_SUCCESS(status)) { 765 *handle = device_found; 766 dbg_printk(TPACPI_DBG_INIT, 767 "Found ACPI handle for %s\n", name); 768 } else { 769 vdbg_printk(TPACPI_DBG_INIT, 770 "Could not locate an ACPI handle for %s: %s\n", 771 name, acpi_format_exception(status)); 772 } 773 } 774 775 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 776 { 777 struct ibm_struct *ibm = data; 778 779 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 780 return; 781 782 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 783 return; 784 785 ibm->acpi->notify(ibm, event); 786 } 787 788 static int __init setup_acpi_notify(struct ibm_struct *ibm) 789 { 790 acpi_status status; 791 int rc; 792 793 BUG_ON(!ibm->acpi); 794 795 if (!*ibm->acpi->handle) 796 return 0; 797 798 vdbg_printk(TPACPI_DBG_INIT, 799 "setting up ACPI notify for %s\n", ibm->name); 800 801 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); 802 if (rc < 0) { 803 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc); 804 return -ENODEV; 805 } 806 807 ibm->acpi->device->driver_data = ibm; 808 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 809 TPACPI_ACPI_EVENT_PREFIX, 810 ibm->name); 811 812 status = acpi_install_notify_handler(*ibm->acpi->handle, 813 ibm->acpi->type, dispatch_acpi_notify, ibm); 814 if (ACPI_FAILURE(status)) { 815 if (status == AE_ALREADY_EXISTS) { 816 pr_notice("another device driver is already handling %s events\n", 817 ibm->name); 818 } else { 819 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 820 ibm->name, acpi_format_exception(status)); 821 } 822 return -ENODEV; 823 } 824 ibm->flags.acpi_notify_installed = 1; 825 return 0; 826 } 827 828 static int __init tpacpi_device_add(struct acpi_device *device) 829 { 830 return 0; 831 } 832 833 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 834 { 835 int rc; 836 837 dbg_printk(TPACPI_DBG_INIT, 838 "registering %s as an ACPI driver\n", ibm->name); 839 840 BUG_ON(!ibm->acpi); 841 842 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 843 if (!ibm->acpi->driver) { 844 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 845 return -ENOMEM; 846 } 847 848 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 849 ibm->acpi->driver->ids = ibm->acpi->hid; 850 851 ibm->acpi->driver->ops.add = &tpacpi_device_add; 852 853 rc = acpi_bus_register_driver(ibm->acpi->driver); 854 if (rc < 0) { 855 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 856 ibm->name, rc); 857 kfree(ibm->acpi->driver); 858 ibm->acpi->driver = NULL; 859 } else if (!rc) 860 ibm->flags.acpi_driver_registered = 1; 861 862 return rc; 863 } 864 865 866 /**************************************************************************** 867 **************************************************************************** 868 * 869 * Procfs Helpers 870 * 871 **************************************************************************** 872 ****************************************************************************/ 873 874 static int dispatch_proc_show(struct seq_file *m, void *v) 875 { 876 struct ibm_struct *ibm = m->private; 877 878 if (!ibm || !ibm->read) 879 return -EINVAL; 880 return ibm->read(m); 881 } 882 883 static int dispatch_proc_open(struct inode *inode, struct file *file) 884 { 885 return single_open(file, dispatch_proc_show, PDE_DATA(inode)); 886 } 887 888 static ssize_t dispatch_proc_write(struct file *file, 889 const char __user *userbuf, 890 size_t count, loff_t *pos) 891 { 892 struct ibm_struct *ibm = PDE_DATA(file_inode(file)); 893 char *kernbuf; 894 int ret; 895 896 if (!ibm || !ibm->write) 897 return -EINVAL; 898 if (count > PAGE_SIZE - 1) 899 return -EINVAL; 900 901 kernbuf = kmalloc(count + 1, GFP_KERNEL); 902 if (!kernbuf) 903 return -ENOMEM; 904 905 if (copy_from_user(kernbuf, userbuf, count)) { 906 kfree(kernbuf); 907 return -EFAULT; 908 } 909 910 kernbuf[count] = 0; 911 ret = ibm->write(kernbuf); 912 if (ret == 0) 913 ret = count; 914 915 kfree(kernbuf); 916 917 return ret; 918 } 919 920 static const struct proc_ops dispatch_proc_ops = { 921 .proc_open = dispatch_proc_open, 922 .proc_read = seq_read, 923 .proc_lseek = seq_lseek, 924 .proc_release = single_release, 925 .proc_write = dispatch_proc_write, 926 }; 927 928 /**************************************************************************** 929 **************************************************************************** 930 * 931 * Device model: input, hwmon and platform 932 * 933 **************************************************************************** 934 ****************************************************************************/ 935 936 static struct platform_device *tpacpi_pdev; 937 static struct platform_device *tpacpi_sensors_pdev; 938 static struct device *tpacpi_hwmon; 939 static struct input_dev *tpacpi_inputdev; 940 static struct mutex tpacpi_inputdev_send_mutex; 941 static LIST_HEAD(tpacpi_all_drivers); 942 943 #ifdef CONFIG_PM_SLEEP 944 static int tpacpi_suspend_handler(struct device *dev) 945 { 946 struct ibm_struct *ibm, *itmp; 947 948 list_for_each_entry_safe(ibm, itmp, 949 &tpacpi_all_drivers, 950 all_drivers) { 951 if (ibm->suspend) 952 (ibm->suspend)(); 953 } 954 955 return 0; 956 } 957 958 static int tpacpi_resume_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->resume) 966 (ibm->resume)(); 967 } 968 969 return 0; 970 } 971 #endif 972 973 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 974 tpacpi_suspend_handler, tpacpi_resume_handler); 975 976 static void tpacpi_shutdown_handler(struct platform_device *pdev) 977 { 978 struct ibm_struct *ibm, *itmp; 979 980 list_for_each_entry_safe(ibm, itmp, 981 &tpacpi_all_drivers, 982 all_drivers) { 983 if (ibm->shutdown) 984 (ibm->shutdown)(); 985 } 986 } 987 988 static struct platform_driver tpacpi_pdriver = { 989 .driver = { 990 .name = TPACPI_DRVR_NAME, 991 .pm = &tpacpi_pm, 992 }, 993 .shutdown = tpacpi_shutdown_handler, 994 }; 995 996 static struct platform_driver tpacpi_hwmon_pdriver = { 997 .driver = { 998 .name = TPACPI_HWMON_DRVR_NAME, 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", 1319 (status == TPACPI_RFK_RADIO_ON) ? 1320 "enabled" : "disabled"); 1321 seq_printf(m, "commands:\tenable, disable\n"); 1322 } 1323 1324 return 0; 1325 } 1326 1327 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1328 { 1329 char *cmd; 1330 int status = -1; 1331 int res = 0; 1332 1333 if (id >= TPACPI_RFK_SW_MAX) 1334 return -ENODEV; 1335 1336 while ((cmd = strsep(&buf, ","))) { 1337 if (strlencmp(cmd, "enable") == 0) 1338 status = TPACPI_RFK_RADIO_ON; 1339 else if (strlencmp(cmd, "disable") == 0) 1340 status = TPACPI_RFK_RADIO_OFF; 1341 else 1342 return -EINVAL; 1343 } 1344 1345 if (status != -1) { 1346 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1347 (status == TPACPI_RFK_RADIO_ON) ? 1348 "enable" : "disable", 1349 tpacpi_rfkill_names[id]); 1350 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1351 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1352 } 1353 1354 return res; 1355 } 1356 1357 /************************************************************************* 1358 * thinkpad-acpi driver attributes 1359 */ 1360 1361 /* interface_version --------------------------------------------------- */ 1362 static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1363 { 1364 return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION); 1365 } 1366 static DRIVER_ATTR_RO(interface_version); 1367 1368 /* debug_level --------------------------------------------------------- */ 1369 static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1370 { 1371 return sysfs_emit(buf, "0x%04x\n", dbg_level); 1372 } 1373 1374 static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1375 size_t count) 1376 { 1377 unsigned long t; 1378 1379 if (parse_strtoul(buf, 0xffff, &t)) 1380 return -EINVAL; 1381 1382 dbg_level = t; 1383 1384 return count; 1385 } 1386 static DRIVER_ATTR_RW(debug_level); 1387 1388 /* version ------------------------------------------------------------- */ 1389 static ssize_t version_show(struct device_driver *drv, char *buf) 1390 { 1391 return sysfs_emit(buf, "%s v%s\n", 1392 TPACPI_DESC, TPACPI_VERSION); 1393 } 1394 static DRIVER_ATTR_RO(version); 1395 1396 /* --------------------------------------------------------------------- */ 1397 1398 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1399 1400 /* wlsw_emulstate ------------------------------------------------------ */ 1401 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1402 { 1403 return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate); 1404 } 1405 1406 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1407 size_t count) 1408 { 1409 unsigned long t; 1410 1411 if (parse_strtoul(buf, 1, &t)) 1412 return -EINVAL; 1413 1414 if (tpacpi_wlsw_emulstate != !!t) { 1415 tpacpi_wlsw_emulstate = !!t; 1416 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1417 } 1418 1419 return count; 1420 } 1421 static DRIVER_ATTR_RW(wlsw_emulstate); 1422 1423 /* bluetooth_emulstate ------------------------------------------------- */ 1424 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1425 { 1426 return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate); 1427 } 1428 1429 static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1430 const char *buf, size_t count) 1431 { 1432 unsigned long t; 1433 1434 if (parse_strtoul(buf, 1, &t)) 1435 return -EINVAL; 1436 1437 tpacpi_bluetooth_emulstate = !!t; 1438 1439 return count; 1440 } 1441 static DRIVER_ATTR_RW(bluetooth_emulstate); 1442 1443 /* wwan_emulstate ------------------------------------------------- */ 1444 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1445 { 1446 return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate); 1447 } 1448 1449 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1450 size_t count) 1451 { 1452 unsigned long t; 1453 1454 if (parse_strtoul(buf, 1, &t)) 1455 return -EINVAL; 1456 1457 tpacpi_wwan_emulstate = !!t; 1458 1459 return count; 1460 } 1461 static DRIVER_ATTR_RW(wwan_emulstate); 1462 1463 /* uwb_emulstate ------------------------------------------------- */ 1464 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1465 { 1466 return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate); 1467 } 1468 1469 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1470 size_t count) 1471 { 1472 unsigned long t; 1473 1474 if (parse_strtoul(buf, 1, &t)) 1475 return -EINVAL; 1476 1477 tpacpi_uwb_emulstate = !!t; 1478 1479 return count; 1480 } 1481 static DRIVER_ATTR_RW(uwb_emulstate); 1482 #endif 1483 1484 /* --------------------------------------------------------------------- */ 1485 1486 static struct driver_attribute *tpacpi_driver_attributes[] = { 1487 &driver_attr_debug_level, &driver_attr_version, 1488 &driver_attr_interface_version, 1489 }; 1490 1491 static int __init tpacpi_create_driver_attributes(struct device_driver *drv) 1492 { 1493 int i, res; 1494 1495 i = 0; 1496 res = 0; 1497 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { 1498 res = driver_create_file(drv, tpacpi_driver_attributes[i]); 1499 i++; 1500 } 1501 1502 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1503 if (!res && dbg_wlswemul) 1504 res = driver_create_file(drv, &driver_attr_wlsw_emulstate); 1505 if (!res && dbg_bluetoothemul) 1506 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); 1507 if (!res && dbg_wwanemul) 1508 res = driver_create_file(drv, &driver_attr_wwan_emulstate); 1509 if (!res && dbg_uwbemul) 1510 res = driver_create_file(drv, &driver_attr_uwb_emulstate); 1511 #endif 1512 1513 return res; 1514 } 1515 1516 static void tpacpi_remove_driver_attributes(struct device_driver *drv) 1517 { 1518 int i; 1519 1520 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) 1521 driver_remove_file(drv, tpacpi_driver_attributes[i]); 1522 1523 #ifdef THINKPAD_ACPI_DEBUGFACILITIES 1524 driver_remove_file(drv, &driver_attr_wlsw_emulstate); 1525 driver_remove_file(drv, &driver_attr_bluetooth_emulstate); 1526 driver_remove_file(drv, &driver_attr_wwan_emulstate); 1527 driver_remove_file(drv, &driver_attr_uwb_emulstate); 1528 #endif 1529 } 1530 1531 /************************************************************************* 1532 * Firmware Data 1533 */ 1534 1535 /* 1536 * Table of recommended minimum BIOS versions 1537 * 1538 * Reasons for listing: 1539 * 1. Stable BIOS, listed because the unknown amount of 1540 * bugs and bad ACPI behaviour on older versions 1541 * 1542 * 2. BIOS or EC fw with known bugs that trigger on Linux 1543 * 1544 * 3. BIOS with known reduced functionality in older versions 1545 * 1546 * We recommend the latest BIOS and EC version. 1547 * We only support the latest BIOS and EC fw version as a rule. 1548 * 1549 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1550 * Information from users in ThinkWiki 1551 * 1552 * WARNING: we use this table also to detect that the machine is 1553 * a ThinkPad in some cases, so don't remove entries lightly. 1554 */ 1555 1556 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1557 { .vendor = (__v), \ 1558 .bios = TPID(__id1, __id2), \ 1559 .ec = TPACPI_MATCH_ANY, \ 1560 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ 1561 | TPVER(__bv1, __bv2) } 1562 1563 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1564 __eid, __ev1, __ev2) \ 1565 { .vendor = (__v), \ 1566 .bios = TPID(__bid1, __bid2), \ 1567 .ec = __eid, \ 1568 .quirks = TPVER(__ev1, __ev2) << 16 \ 1569 | TPVER(__bv1, __bv2) } 1570 1571 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1572 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1573 1574 /* Outdated IBM BIOSes often lack the EC id string */ 1575 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1576 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1577 __bv1, __bv2, TPID(__id1, __id2), \ 1578 __ev1, __ev2), \ 1579 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1580 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1581 __ev1, __ev2) 1582 1583 /* Outdated IBM BIOSes often lack the EC id string */ 1584 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1585 __eid1, __eid2, __ev1, __ev2) \ 1586 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1587 __bv1, __bv2, TPID(__eid1, __eid2), \ 1588 __ev1, __ev2), \ 1589 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1590 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1591 __ev1, __ev2) 1592 1593 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1594 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1595 1596 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1597 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1598 __bv1, __bv2, TPID(__id1, __id2), \ 1599 __ev1, __ev2) 1600 1601 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1602 __eid1, __eid2, __ev1, __ev2) \ 1603 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1604 __bv1, __bv2, TPID(__eid1, __eid2), \ 1605 __ev1, __ev2) 1606 1607 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1608 /* Numeric models ------------------ */ 1609 /* FW MODEL BIOS VERS */ 1610 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1611 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1612 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1613 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1614 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1615 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1616 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1617 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1618 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1619 1620 /* A-series ------------------------- */ 1621 /* FW MODEL BIOS VERS EC VERS */ 1622 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1623 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1624 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1625 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1626 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1627 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1628 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1629 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1630 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1631 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1632 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1633 1634 /* G-series ------------------------- */ 1635 /* FW MODEL BIOS VERS */ 1636 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1637 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1638 1639 /* R-series, T-series --------------- */ 1640 /* FW MODEL BIOS VERS EC VERS */ 1641 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1642 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1643 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1644 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1645 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1646 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1647 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1648 T40/p, T41/p, T42/p (1) */ 1649 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1650 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1651 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1652 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1653 1654 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1655 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1656 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1657 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1658 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1659 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1660 1661 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1662 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1663 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1664 1665 /* BIOS FW BIOS VERS EC FW EC VERS */ 1666 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1667 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1668 1669 /* X-series ------------------------- */ 1670 /* FW MODEL BIOS VERS EC VERS */ 1671 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1672 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1673 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1674 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1675 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1676 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1677 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1678 1679 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1680 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1681 1682 /* (0) - older versions lack DMI EC fw string and functionality */ 1683 /* (1) - older versions known to lack functionality */ 1684 }; 1685 1686 #undef TPV_QL1 1687 #undef TPV_QL0 1688 #undef TPV_QI2 1689 #undef TPV_QI1 1690 #undef TPV_QI0 1691 #undef TPV_Q_X 1692 #undef TPV_Q 1693 1694 static void __init tpacpi_check_outdated_fw(void) 1695 { 1696 unsigned long fwvers; 1697 u16 ec_version, bios_version; 1698 1699 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1700 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1701 1702 if (!fwvers) 1703 return; 1704 1705 bios_version = fwvers & 0xffffU; 1706 ec_version = (fwvers >> 16) & 0xffffU; 1707 1708 /* note that unknown versions are set to 0x0000 and we use that */ 1709 if ((bios_version > thinkpad_id.bios_release) || 1710 (ec_version > thinkpad_id.ec_release && 1711 ec_version != TPACPI_MATCH_ANY_VERSION)) { 1712 /* 1713 * The changelogs would let us track down the exact 1714 * reason, but it is just too much of a pain to track 1715 * it. We only list BIOSes that are either really 1716 * broken, or really stable to begin with, so it is 1717 * best if the user upgrades the firmware anyway. 1718 */ 1719 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1720 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1721 } 1722 } 1723 1724 static bool __init tpacpi_is_fw_known(void) 1725 { 1726 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1727 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1728 } 1729 1730 /**************************************************************************** 1731 **************************************************************************** 1732 * 1733 * Subdrivers 1734 * 1735 **************************************************************************** 1736 ****************************************************************************/ 1737 1738 /************************************************************************* 1739 * thinkpad-acpi metadata subdriver 1740 */ 1741 1742 static int thinkpad_acpi_driver_read(struct seq_file *m) 1743 { 1744 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1745 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1746 return 0; 1747 } 1748 1749 static struct ibm_struct thinkpad_acpi_driver_data = { 1750 .name = "driver", 1751 .read = thinkpad_acpi_driver_read, 1752 }; 1753 1754 /************************************************************************* 1755 * Hotkey subdriver 1756 */ 1757 1758 /* 1759 * ThinkPad firmware event model 1760 * 1761 * The ThinkPad firmware has two main event interfaces: normal ACPI 1762 * notifications (which follow the ACPI standard), and a private event 1763 * interface. 1764 * 1765 * The private event interface also issues events for the hotkeys. As 1766 * the driver gained features, the event handling code ended up being 1767 * built around the hotkey subdriver. This will need to be refactored 1768 * to a more formal event API eventually. 1769 * 1770 * Some "hotkeys" are actually supposed to be used as event reports, 1771 * such as "brightness has changed", "volume has changed", depending on 1772 * the ThinkPad model and how the firmware is operating. 1773 * 1774 * Unlike other classes, hotkey-class events have mask/unmask control on 1775 * non-ancient firmware. However, how it behaves changes a lot with the 1776 * firmware model and version. 1777 */ 1778 1779 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1780 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1781 TP_ACPI_HOTKEYSCAN_FNF2, 1782 TP_ACPI_HOTKEYSCAN_FNF3, 1783 TP_ACPI_HOTKEYSCAN_FNF4, 1784 TP_ACPI_HOTKEYSCAN_FNF5, 1785 TP_ACPI_HOTKEYSCAN_FNF6, 1786 TP_ACPI_HOTKEYSCAN_FNF7, 1787 TP_ACPI_HOTKEYSCAN_FNF8, 1788 TP_ACPI_HOTKEYSCAN_FNF9, 1789 TP_ACPI_HOTKEYSCAN_FNF10, 1790 TP_ACPI_HOTKEYSCAN_FNF11, 1791 TP_ACPI_HOTKEYSCAN_FNF12, 1792 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1793 TP_ACPI_HOTKEYSCAN_FNINSERT, 1794 TP_ACPI_HOTKEYSCAN_FNDELETE, 1795 TP_ACPI_HOTKEYSCAN_FNHOME, 1796 TP_ACPI_HOTKEYSCAN_FNEND, 1797 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1798 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1799 TP_ACPI_HOTKEYSCAN_FNSPACE, 1800 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1801 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1802 TP_ACPI_HOTKEYSCAN_MUTE, 1803 TP_ACPI_HOTKEYSCAN_THINKPAD, 1804 TP_ACPI_HOTKEYSCAN_UNK1, 1805 TP_ACPI_HOTKEYSCAN_UNK2, 1806 TP_ACPI_HOTKEYSCAN_UNK3, 1807 TP_ACPI_HOTKEYSCAN_UNK4, 1808 TP_ACPI_HOTKEYSCAN_UNK5, 1809 TP_ACPI_HOTKEYSCAN_UNK6, 1810 TP_ACPI_HOTKEYSCAN_UNK7, 1811 TP_ACPI_HOTKEYSCAN_UNK8, 1812 1813 /* Adaptive keyboard keycodes */ 1814 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1815 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1816 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1817 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1818 TP_ACPI_HOTKEYSCAN_CLOUD, 1819 TP_ACPI_HOTKEYSCAN_UNK9, 1820 TP_ACPI_HOTKEYSCAN_VOICE, 1821 TP_ACPI_HOTKEYSCAN_UNK10, 1822 TP_ACPI_HOTKEYSCAN_GESTURES, 1823 TP_ACPI_HOTKEYSCAN_UNK11, 1824 TP_ACPI_HOTKEYSCAN_UNK12, 1825 TP_ACPI_HOTKEYSCAN_UNK13, 1826 TP_ACPI_HOTKEYSCAN_CONFIG, 1827 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1828 TP_ACPI_HOTKEYSCAN_RELOAD, 1829 TP_ACPI_HOTKEYSCAN_BACK, 1830 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1831 TP_ACPI_HOTKEYSCAN_MIC_UP, 1832 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1833 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1834 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1835 1836 /* Lenovo extended keymap, starting at 0x1300 */ 1837 TP_ACPI_HOTKEYSCAN_EXTENDED_START, 1838 /* first new observed key (star, favorites) is 0x1311 */ 1839 TP_ACPI_HOTKEYSCAN_STAR = 69, 1840 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1841 TP_ACPI_HOTKEYSCAN_CALCULATOR, 1842 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1843 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1844 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ 1845 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, 1846 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, 1847 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, 1848 1849 /* Hotkey keymap size */ 1850 TPACPI_HOTKEY_MAP_LEN 1851 }; 1852 1853 enum { /* Keys/events available through NVRAM polling */ 1854 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1855 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1856 }; 1857 1858 enum { /* Positions of some of the keys in hotkey masks */ 1859 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1860 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1861 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1862 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1863 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1864 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1865 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1866 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1867 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1868 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1869 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1870 }; 1871 1872 enum { /* NVRAM to ACPI HKEY group map */ 1873 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1874 TP_ACPI_HKEY_ZOOM_MASK | 1875 TP_ACPI_HKEY_DISPSWTCH_MASK | 1876 TP_ACPI_HKEY_HIBERNATE_MASK, 1877 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1878 TP_ACPI_HKEY_BRGHTDWN_MASK, 1879 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1880 TP_ACPI_HKEY_VOLDWN_MASK | 1881 TP_ACPI_HKEY_MUTE_MASK, 1882 }; 1883 1884 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1885 struct tp_nvram_state { 1886 u16 thinkpad_toggle:1; 1887 u16 zoom_toggle:1; 1888 u16 display_toggle:1; 1889 u16 thinklight_toggle:1; 1890 u16 hibernate_toggle:1; 1891 u16 displayexp_toggle:1; 1892 u16 display_state:1; 1893 u16 brightness_toggle:1; 1894 u16 volume_toggle:1; 1895 u16 mute:1; 1896 1897 u8 brightness_level; 1898 u8 volume_level; 1899 }; 1900 1901 /* kthread for the hotkey poller */ 1902 static struct task_struct *tpacpi_hotkey_task; 1903 1904 /* 1905 * Acquire mutex to write poller control variables as an 1906 * atomic block. 1907 * 1908 * Increment hotkey_config_change when changing them if you 1909 * want the kthread to forget old state. 1910 * 1911 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1912 */ 1913 static struct mutex hotkey_thread_data_mutex; 1914 static unsigned int hotkey_config_change; 1915 1916 /* 1917 * hotkey poller control variables 1918 * 1919 * Must be atomic or readers will also need to acquire mutex 1920 * 1921 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1922 * should be used only when the changes need to be taken as 1923 * a block, OR when one needs to force the kthread to forget 1924 * old state. 1925 */ 1926 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 1927 static unsigned int hotkey_poll_freq = 10; /* Hz */ 1928 1929 #define HOTKEY_CONFIG_CRITICAL_START \ 1930 do { \ 1931 mutex_lock(&hotkey_thread_data_mutex); \ 1932 hotkey_config_change++; \ 1933 } while (0); 1934 #define HOTKEY_CONFIG_CRITICAL_END \ 1935 mutex_unlock(&hotkey_thread_data_mutex); 1936 1937 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1938 1939 #define hotkey_source_mask 0U 1940 #define HOTKEY_CONFIG_CRITICAL_START 1941 #define HOTKEY_CONFIG_CRITICAL_END 1942 1943 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1944 1945 static struct mutex hotkey_mutex; 1946 1947 static enum { /* Reasons for waking up */ 1948 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 1949 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 1950 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 1951 } hotkey_wakeup_reason; 1952 1953 static int hotkey_autosleep_ack; 1954 1955 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 1956 static u32 hotkey_all_mask; /* all events supported in fw */ 1957 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 1958 static u32 hotkey_reserved_mask; /* events better left disabled */ 1959 static u32 hotkey_driver_mask; /* events needed by the driver */ 1960 static u32 hotkey_user_mask; /* events visible to userspace */ 1961 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 1962 1963 static u16 *hotkey_keycode_map; 1964 1965 static void tpacpi_driver_event(const unsigned int hkey_event); 1966 static void hotkey_driver_event(const unsigned int scancode); 1967 static void hotkey_poll_setup(const bool may_warn); 1968 1969 /* HKEY.MHKG() return bits */ 1970 #define TP_HOTKEY_TABLET_MASK (1 << 3) 1971 enum { 1972 TP_ACPI_MULTI_MODE_INVALID = 0, 1973 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 1974 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 1975 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 1976 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 1977 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 1978 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 1979 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 1980 }; 1981 1982 enum { 1983 /* The following modes are considered tablet mode for the purpose of 1984 * reporting the status to userspace. i.e. in all these modes it makes 1985 * sense to disable the laptop input devices such as touchpad and 1986 * keyboard. 1987 */ 1988 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 1989 TP_ACPI_MULTI_MODE_STAND | 1990 TP_ACPI_MULTI_MODE_TENT | 1991 TP_ACPI_MULTI_MODE_STAND_TENT, 1992 }; 1993 1994 static int hotkey_get_wlsw(void) 1995 { 1996 int status; 1997 1998 if (!tp_features.hotkey_wlsw) 1999 return -ENODEV; 2000 2001 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 2002 if (dbg_wlswemul) 2003 return (tpacpi_wlsw_emulstate) ? 2004 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2005 #endif 2006 2007 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 2008 return -EIO; 2009 2010 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2011 } 2012 2013 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 2014 { 2015 int type = (s >> 16) & 0xffff; 2016 int value = s & 0xffff; 2017 int mode = TP_ACPI_MULTI_MODE_INVALID; 2018 int valid_modes = 0; 2019 2020 if (has_tablet_mode) 2021 *has_tablet_mode = 0; 2022 2023 switch (type) { 2024 case 1: 2025 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2026 TP_ACPI_MULTI_MODE_TABLET | 2027 TP_ACPI_MULTI_MODE_STAND_TENT; 2028 break; 2029 case 2: 2030 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2031 TP_ACPI_MULTI_MODE_FLAT | 2032 TP_ACPI_MULTI_MODE_TABLET | 2033 TP_ACPI_MULTI_MODE_STAND | 2034 TP_ACPI_MULTI_MODE_TENT; 2035 break; 2036 case 3: 2037 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2038 TP_ACPI_MULTI_MODE_FLAT; 2039 break; 2040 case 4: 2041 case 5: 2042 /* In mode 4, FLAT is not specified as a valid mode. However, 2043 * it can be seen at least on the X1 Yoga 2nd Generation. 2044 */ 2045 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2046 TP_ACPI_MULTI_MODE_FLAT | 2047 TP_ACPI_MULTI_MODE_TABLET | 2048 TP_ACPI_MULTI_MODE_STAND | 2049 TP_ACPI_MULTI_MODE_TENT; 2050 break; 2051 default: 2052 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2053 type, value, TPACPI_MAIL); 2054 return 0; 2055 } 2056 2057 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2058 *has_tablet_mode = 1; 2059 2060 switch (value) { 2061 case 1: 2062 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2063 break; 2064 case 2: 2065 mode = TP_ACPI_MULTI_MODE_FLAT; 2066 break; 2067 case 3: 2068 mode = TP_ACPI_MULTI_MODE_TABLET; 2069 break; 2070 case 4: 2071 if (type == 1) 2072 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2073 else 2074 mode = TP_ACPI_MULTI_MODE_STAND; 2075 break; 2076 case 5: 2077 mode = TP_ACPI_MULTI_MODE_TENT; 2078 break; 2079 default: 2080 if (type == 5 && value == 0xffff) { 2081 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2082 return 0; 2083 } 2084 } 2085 2086 if (!(mode & valid_modes)) { 2087 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2088 value, type, TPACPI_MAIL); 2089 return 0; 2090 } 2091 2092 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2093 } 2094 2095 static int hotkey_get_tablet_mode(int *status) 2096 { 2097 int s; 2098 2099 switch (tp_features.hotkey_tablet) { 2100 case TP_HOTKEY_TABLET_USES_MHKG: 2101 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2102 return -EIO; 2103 2104 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2105 break; 2106 case TP_HOTKEY_TABLET_USES_GMMS: 2107 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2108 return -EIO; 2109 2110 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2111 break; 2112 default: 2113 break; 2114 } 2115 2116 return 0; 2117 } 2118 2119 /* 2120 * Reads current event mask from firmware, and updates 2121 * hotkey_acpi_mask accordingly. Also resets any bits 2122 * from hotkey_user_mask that are unavailable to be 2123 * delivered (shadow requirement of the userspace ABI). 2124 * 2125 * Call with hotkey_mutex held 2126 */ 2127 static int hotkey_mask_get(void) 2128 { 2129 if (tp_features.hotkey_mask) { 2130 u32 m = 0; 2131 2132 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2133 return -EIO; 2134 2135 hotkey_acpi_mask = m; 2136 } else { 2137 /* no mask support doesn't mean no event support... */ 2138 hotkey_acpi_mask = hotkey_all_mask; 2139 } 2140 2141 /* sync userspace-visible mask */ 2142 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2143 2144 return 0; 2145 } 2146 2147 static void hotkey_mask_warn_incomplete_mask(void) 2148 { 2149 /* log only what the user can fix... */ 2150 const u32 wantedmask = hotkey_driver_mask & 2151 ~(hotkey_acpi_mask | hotkey_source_mask) & 2152 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2153 2154 if (wantedmask) 2155 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2156 } 2157 2158 /* 2159 * Set the firmware mask when supported 2160 * 2161 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2162 * 2163 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2164 * 2165 * Call with hotkey_mutex held 2166 */ 2167 static int hotkey_mask_set(u32 mask) 2168 { 2169 int i; 2170 int rc = 0; 2171 2172 const u32 fwmask = mask & ~hotkey_source_mask; 2173 2174 if (tp_features.hotkey_mask) { 2175 for (i = 0; i < 32; i++) { 2176 if (!acpi_evalf(hkey_handle, 2177 NULL, "MHKM", "vdd", i + 1, 2178 !!(mask & (1 << i)))) { 2179 rc = -EIO; 2180 break; 2181 } 2182 } 2183 } 2184 2185 /* 2186 * We *must* make an inconditional call to hotkey_mask_get to 2187 * refresh hotkey_acpi_mask and update hotkey_user_mask 2188 * 2189 * Take the opportunity to also log when we cannot _enable_ 2190 * a given event. 2191 */ 2192 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2193 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2194 fwmask, hotkey_acpi_mask); 2195 } 2196 2197 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2198 hotkey_mask_warn_incomplete_mask(); 2199 2200 return rc; 2201 } 2202 2203 /* 2204 * Sets hotkey_user_mask and tries to set the firmware mask 2205 * 2206 * Call with hotkey_mutex held 2207 */ 2208 static int hotkey_user_mask_set(const u32 mask) 2209 { 2210 int rc; 2211 2212 /* Give people a chance to notice they are doing something that 2213 * is bound to go boom on their users sooner or later */ 2214 if (!tp_warned.hotkey_mask_ff && 2215 (mask == 0xffff || mask == 0xffffff || 2216 mask == 0xffffffff)) { 2217 tp_warned.hotkey_mask_ff = 1; 2218 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2219 mask); 2220 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2221 } 2222 2223 /* Try to enable what the user asked for, plus whatever we need. 2224 * this syncs everything but won't enable bits in hotkey_user_mask */ 2225 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2226 2227 /* Enable the available bits in hotkey_user_mask */ 2228 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2229 2230 return rc; 2231 } 2232 2233 /* 2234 * Sets the driver hotkey mask. 2235 * 2236 * Can be called even if the hotkey subdriver is inactive 2237 */ 2238 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2239 { 2240 int rc; 2241 2242 /* Do the right thing if hotkey_init has not been called yet */ 2243 if (!tp_features.hotkey) { 2244 hotkey_driver_mask = mask; 2245 return 0; 2246 } 2247 2248 mutex_lock(&hotkey_mutex); 2249 2250 HOTKEY_CONFIG_CRITICAL_START 2251 hotkey_driver_mask = mask; 2252 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2253 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2254 #endif 2255 HOTKEY_CONFIG_CRITICAL_END 2256 2257 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2258 ~hotkey_source_mask); 2259 hotkey_poll_setup(true); 2260 2261 mutex_unlock(&hotkey_mutex); 2262 2263 return rc; 2264 } 2265 2266 static int hotkey_status_get(int *status) 2267 { 2268 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2269 return -EIO; 2270 2271 return 0; 2272 } 2273 2274 static int hotkey_status_set(bool enable) 2275 { 2276 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2277 return -EIO; 2278 2279 return 0; 2280 } 2281 2282 static void tpacpi_input_send_tabletsw(void) 2283 { 2284 int state; 2285 2286 if (tp_features.hotkey_tablet && 2287 !hotkey_get_tablet_mode(&state)) { 2288 mutex_lock(&tpacpi_inputdev_send_mutex); 2289 2290 input_report_switch(tpacpi_inputdev, 2291 SW_TABLET_MODE, !!state); 2292 input_sync(tpacpi_inputdev); 2293 2294 mutex_unlock(&tpacpi_inputdev_send_mutex); 2295 } 2296 } 2297 2298 /* Do NOT call without validating scancode first */ 2299 static void tpacpi_input_send_key(const unsigned int scancode) 2300 { 2301 const unsigned int keycode = hotkey_keycode_map[scancode]; 2302 2303 if (keycode != KEY_RESERVED) { 2304 mutex_lock(&tpacpi_inputdev_send_mutex); 2305 2306 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2307 input_report_key(tpacpi_inputdev, keycode, 1); 2308 input_sync(tpacpi_inputdev); 2309 2310 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2311 input_report_key(tpacpi_inputdev, keycode, 0); 2312 input_sync(tpacpi_inputdev); 2313 2314 mutex_unlock(&tpacpi_inputdev_send_mutex); 2315 } 2316 } 2317 2318 /* Do NOT call without validating scancode first */ 2319 static void tpacpi_input_send_key_masked(const unsigned int scancode) 2320 { 2321 hotkey_driver_event(scancode); 2322 if (hotkey_user_mask & (1 << scancode)) 2323 tpacpi_input_send_key(scancode); 2324 } 2325 2326 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2327 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2328 2329 /* Do NOT call without validating scancode first */ 2330 static void tpacpi_hotkey_send_key(unsigned int scancode) 2331 { 2332 tpacpi_input_send_key_masked(scancode); 2333 } 2334 2335 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2336 { 2337 u8 d; 2338 2339 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2340 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2341 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2342 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2343 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2344 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2345 } 2346 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2347 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2348 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2349 } 2350 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2351 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2352 n->displayexp_toggle = 2353 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2354 } 2355 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2356 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2357 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2358 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2359 n->brightness_toggle = 2360 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2361 } 2362 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2363 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2364 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2365 >> TP_NVRAM_POS_LEVEL_VOLUME; 2366 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2367 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2368 } 2369 } 2370 2371 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2372 do { \ 2373 if ((event_mask & (1 << __scancode)) && \ 2374 oldn->__member != newn->__member) \ 2375 tpacpi_hotkey_send_key(__scancode); \ 2376 } while (0) 2377 2378 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2379 do { \ 2380 if (event_mask & (1 << __scancode)) \ 2381 tpacpi_hotkey_send_key(__scancode); \ 2382 } while (0) 2383 2384 static void issue_volchange(const unsigned int oldvol, 2385 const unsigned int newvol, 2386 const u32 event_mask) 2387 { 2388 unsigned int i = oldvol; 2389 2390 while (i > newvol) { 2391 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2392 i--; 2393 } 2394 while (i < newvol) { 2395 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2396 i++; 2397 } 2398 } 2399 2400 static void issue_brightnesschange(const unsigned int oldbrt, 2401 const unsigned int newbrt, 2402 const u32 event_mask) 2403 { 2404 unsigned int i = oldbrt; 2405 2406 while (i > newbrt) { 2407 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2408 i--; 2409 } 2410 while (i < newbrt) { 2411 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2412 i++; 2413 } 2414 } 2415 2416 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2417 struct tp_nvram_state *newn, 2418 const u32 event_mask) 2419 { 2420 2421 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2422 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2423 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2424 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2425 2426 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2427 2428 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2429 2430 /* 2431 * Handle volume 2432 * 2433 * This code is supposed to duplicate the IBM firmware behaviour: 2434 * - Pressing MUTE issues mute hotkey message, even when already mute 2435 * - Pressing Volume up/down issues volume up/down hotkey messages, 2436 * even when already at maximum or minimum volume 2437 * - The act of unmuting issues volume up/down notification, 2438 * depending which key was used to unmute 2439 * 2440 * We are constrained to what the NVRAM can tell us, which is not much 2441 * and certainly not enough if more than one volume hotkey was pressed 2442 * since the last poll cycle. 2443 * 2444 * Just to make our life interesting, some newer Lenovo ThinkPads have 2445 * bugs in the BIOS and may fail to update volume_toggle properly. 2446 */ 2447 if (newn->mute) { 2448 /* muted */ 2449 if (!oldn->mute || 2450 oldn->volume_toggle != newn->volume_toggle || 2451 oldn->volume_level != newn->volume_level) { 2452 /* recently muted, or repeated mute keypress, or 2453 * multiple presses ending in mute */ 2454 issue_volchange(oldn->volume_level, newn->volume_level, 2455 event_mask); 2456 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2457 } 2458 } else { 2459 /* unmute */ 2460 if (oldn->mute) { 2461 /* recently unmuted, issue 'unmute' keypress */ 2462 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2463 } 2464 if (oldn->volume_level != newn->volume_level) { 2465 issue_volchange(oldn->volume_level, newn->volume_level, 2466 event_mask); 2467 } else if (oldn->volume_toggle != newn->volume_toggle) { 2468 /* repeated vol up/down keypress at end of scale ? */ 2469 if (newn->volume_level == 0) 2470 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2471 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2472 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2473 } 2474 } 2475 2476 /* handle brightness */ 2477 if (oldn->brightness_level != newn->brightness_level) { 2478 issue_brightnesschange(oldn->brightness_level, 2479 newn->brightness_level, event_mask); 2480 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2481 /* repeated key presses that didn't change state */ 2482 if (newn->brightness_level == 0) 2483 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2484 else if (newn->brightness_level >= bright_maxlvl 2485 && !tp_features.bright_unkfw) 2486 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2487 } 2488 2489 #undef TPACPI_COMPARE_KEY 2490 #undef TPACPI_MAY_SEND_KEY 2491 } 2492 2493 /* 2494 * Polling driver 2495 * 2496 * We track all events in hotkey_source_mask all the time, since 2497 * most of them are edge-based. We only issue those requested by 2498 * hotkey_user_mask or hotkey_driver_mask, though. 2499 */ 2500 static int hotkey_kthread(void *data) 2501 { 2502 struct tp_nvram_state s[2] = { 0 }; 2503 u32 poll_mask, event_mask; 2504 unsigned int si, so; 2505 unsigned long t; 2506 unsigned int change_detector; 2507 unsigned int poll_freq; 2508 bool was_frozen; 2509 2510 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2511 goto exit; 2512 2513 set_freezable(); 2514 2515 so = 0; 2516 si = 1; 2517 t = 0; 2518 2519 /* Initial state for compares */ 2520 mutex_lock(&hotkey_thread_data_mutex); 2521 change_detector = hotkey_config_change; 2522 poll_mask = hotkey_source_mask; 2523 event_mask = hotkey_source_mask & 2524 (hotkey_driver_mask | hotkey_user_mask); 2525 poll_freq = hotkey_poll_freq; 2526 mutex_unlock(&hotkey_thread_data_mutex); 2527 hotkey_read_nvram(&s[so], poll_mask); 2528 2529 while (!kthread_should_stop()) { 2530 if (t == 0) { 2531 if (likely(poll_freq)) 2532 t = 1000/poll_freq; 2533 else 2534 t = 100; /* should never happen... */ 2535 } 2536 t = msleep_interruptible(t); 2537 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2538 break; 2539 2540 if (t > 0 && !was_frozen) 2541 continue; 2542 2543 mutex_lock(&hotkey_thread_data_mutex); 2544 if (was_frozen || hotkey_config_change != change_detector) { 2545 /* forget old state on thaw or config change */ 2546 si = so; 2547 t = 0; 2548 change_detector = hotkey_config_change; 2549 } 2550 poll_mask = hotkey_source_mask; 2551 event_mask = hotkey_source_mask & 2552 (hotkey_driver_mask | hotkey_user_mask); 2553 poll_freq = hotkey_poll_freq; 2554 mutex_unlock(&hotkey_thread_data_mutex); 2555 2556 if (likely(poll_mask)) { 2557 hotkey_read_nvram(&s[si], poll_mask); 2558 if (likely(si != so)) { 2559 hotkey_compare_and_issue_event(&s[so], &s[si], 2560 event_mask); 2561 } 2562 } 2563 2564 so = si; 2565 si ^= 1; 2566 } 2567 2568 exit: 2569 return 0; 2570 } 2571 2572 /* call with hotkey_mutex held */ 2573 static void hotkey_poll_stop_sync(void) 2574 { 2575 if (tpacpi_hotkey_task) { 2576 kthread_stop(tpacpi_hotkey_task); 2577 tpacpi_hotkey_task = NULL; 2578 } 2579 } 2580 2581 /* call with hotkey_mutex held */ 2582 static void hotkey_poll_setup(const bool may_warn) 2583 { 2584 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2585 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2586 2587 if (hotkey_poll_freq > 0 && 2588 (poll_driver_mask || 2589 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2590 if (!tpacpi_hotkey_task) { 2591 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2592 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2593 if (IS_ERR(tpacpi_hotkey_task)) { 2594 tpacpi_hotkey_task = NULL; 2595 pr_err("could not create kernel thread for hotkey polling\n"); 2596 } 2597 } 2598 } else { 2599 hotkey_poll_stop_sync(); 2600 if (may_warn && (poll_driver_mask || poll_user_mask) && 2601 hotkey_poll_freq == 0) { 2602 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2603 poll_user_mask, poll_driver_mask); 2604 } 2605 } 2606 } 2607 2608 static void hotkey_poll_setup_safe(const bool may_warn) 2609 { 2610 mutex_lock(&hotkey_mutex); 2611 hotkey_poll_setup(may_warn); 2612 mutex_unlock(&hotkey_mutex); 2613 } 2614 2615 /* call with hotkey_mutex held */ 2616 static void hotkey_poll_set_freq(unsigned int freq) 2617 { 2618 if (!freq) 2619 hotkey_poll_stop_sync(); 2620 2621 hotkey_poll_freq = freq; 2622 } 2623 2624 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2625 2626 static void hotkey_poll_setup(const bool __unused) 2627 { 2628 } 2629 2630 static void hotkey_poll_setup_safe(const bool __unused) 2631 { 2632 } 2633 2634 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2635 2636 static int hotkey_inputdev_open(struct input_dev *dev) 2637 { 2638 switch (tpacpi_lifecycle) { 2639 case TPACPI_LIFE_INIT: 2640 case TPACPI_LIFE_RUNNING: 2641 hotkey_poll_setup_safe(false); 2642 return 0; 2643 case TPACPI_LIFE_EXITING: 2644 return -EBUSY; 2645 } 2646 2647 /* Should only happen if tpacpi_lifecycle is corrupt */ 2648 BUG(); 2649 return -EBUSY; 2650 } 2651 2652 static void hotkey_inputdev_close(struct input_dev *dev) 2653 { 2654 /* disable hotkey polling when possible */ 2655 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2656 !(hotkey_source_mask & hotkey_driver_mask)) 2657 hotkey_poll_setup_safe(false); 2658 } 2659 2660 /* sysfs hotkey enable ------------------------------------------------- */ 2661 static ssize_t hotkey_enable_show(struct device *dev, 2662 struct device_attribute *attr, 2663 char *buf) 2664 { 2665 int res, status; 2666 2667 printk_deprecated_attribute("hotkey_enable", 2668 "Hotkey reporting is always enabled"); 2669 2670 res = hotkey_status_get(&status); 2671 if (res) 2672 return res; 2673 2674 return sysfs_emit(buf, "%d\n", status); 2675 } 2676 2677 static ssize_t hotkey_enable_store(struct device *dev, 2678 struct device_attribute *attr, 2679 const char *buf, size_t count) 2680 { 2681 unsigned long t; 2682 2683 printk_deprecated_attribute("hotkey_enable", 2684 "Hotkeys can be disabled through hotkey_mask"); 2685 2686 if (parse_strtoul(buf, 1, &t)) 2687 return -EINVAL; 2688 2689 if (t == 0) 2690 return -EPERM; 2691 2692 return count; 2693 } 2694 2695 static DEVICE_ATTR_RW(hotkey_enable); 2696 2697 /* sysfs hotkey mask --------------------------------------------------- */ 2698 static ssize_t hotkey_mask_show(struct device *dev, 2699 struct device_attribute *attr, 2700 char *buf) 2701 { 2702 return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask); 2703 } 2704 2705 static ssize_t hotkey_mask_store(struct device *dev, 2706 struct device_attribute *attr, 2707 const char *buf, size_t count) 2708 { 2709 unsigned long t; 2710 int res; 2711 2712 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2713 return -EINVAL; 2714 2715 if (mutex_lock_killable(&hotkey_mutex)) 2716 return -ERESTARTSYS; 2717 2718 res = hotkey_user_mask_set(t); 2719 2720 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2721 hotkey_poll_setup(true); 2722 #endif 2723 2724 mutex_unlock(&hotkey_mutex); 2725 2726 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2727 2728 return (res) ? res : count; 2729 } 2730 2731 static DEVICE_ATTR_RW(hotkey_mask); 2732 2733 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2734 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2735 struct device_attribute *attr, 2736 char *buf) 2737 { 2738 return sprintf(buf, "0\n"); 2739 } 2740 2741 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2742 2743 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2744 static ssize_t hotkey_bios_mask_show(struct device *dev, 2745 struct device_attribute *attr, 2746 char *buf) 2747 { 2748 printk_deprecated_attribute("hotkey_bios_mask", 2749 "This attribute is useless."); 2750 return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask); 2751 } 2752 2753 static DEVICE_ATTR_RO(hotkey_bios_mask); 2754 2755 /* sysfs hotkey all_mask ----------------------------------------------- */ 2756 static ssize_t hotkey_all_mask_show(struct device *dev, 2757 struct device_attribute *attr, 2758 char *buf) 2759 { 2760 return sysfs_emit(buf, "0x%08x\n", 2761 hotkey_all_mask | hotkey_source_mask); 2762 } 2763 2764 static DEVICE_ATTR_RO(hotkey_all_mask); 2765 2766 /* sysfs hotkey all_mask ----------------------------------------------- */ 2767 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2768 struct device_attribute *attr, 2769 char *buf) 2770 { 2771 return sysfs_emit(buf, "0x%08x\n", 2772 hotkey_adaptive_all_mask | hotkey_source_mask); 2773 } 2774 2775 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2776 2777 /* sysfs hotkey recommended_mask --------------------------------------- */ 2778 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2779 struct device_attribute *attr, 2780 char *buf) 2781 { 2782 return sysfs_emit(buf, "0x%08x\n", 2783 (hotkey_all_mask | hotkey_source_mask) 2784 & ~hotkey_reserved_mask); 2785 } 2786 2787 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2788 2789 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2790 2791 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2792 static ssize_t hotkey_source_mask_show(struct device *dev, 2793 struct device_attribute *attr, 2794 char *buf) 2795 { 2796 return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask); 2797 } 2798 2799 static ssize_t hotkey_source_mask_store(struct device *dev, 2800 struct device_attribute *attr, 2801 const char *buf, size_t count) 2802 { 2803 unsigned long t; 2804 u32 r_ev; 2805 int rc; 2806 2807 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2808 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2809 return -EINVAL; 2810 2811 if (mutex_lock_killable(&hotkey_mutex)) 2812 return -ERESTARTSYS; 2813 2814 HOTKEY_CONFIG_CRITICAL_START 2815 hotkey_source_mask = t; 2816 HOTKEY_CONFIG_CRITICAL_END 2817 2818 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2819 ~hotkey_source_mask); 2820 hotkey_poll_setup(true); 2821 2822 /* check if events needed by the driver got disabled */ 2823 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2824 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2825 2826 mutex_unlock(&hotkey_mutex); 2827 2828 if (rc < 0) 2829 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2830 2831 if (r_ev) 2832 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2833 r_ev); 2834 2835 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2836 2837 return (rc < 0) ? rc : count; 2838 } 2839 2840 static DEVICE_ATTR_RW(hotkey_source_mask); 2841 2842 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2843 static ssize_t hotkey_poll_freq_show(struct device *dev, 2844 struct device_attribute *attr, 2845 char *buf) 2846 { 2847 return sysfs_emit(buf, "%d\n", hotkey_poll_freq); 2848 } 2849 2850 static ssize_t hotkey_poll_freq_store(struct device *dev, 2851 struct device_attribute *attr, 2852 const char *buf, size_t count) 2853 { 2854 unsigned long t; 2855 2856 if (parse_strtoul(buf, 25, &t)) 2857 return -EINVAL; 2858 2859 if (mutex_lock_killable(&hotkey_mutex)) 2860 return -ERESTARTSYS; 2861 2862 hotkey_poll_set_freq(t); 2863 hotkey_poll_setup(true); 2864 2865 mutex_unlock(&hotkey_mutex); 2866 2867 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2868 2869 return count; 2870 } 2871 2872 static DEVICE_ATTR_RW(hotkey_poll_freq); 2873 2874 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2875 2876 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2877 static ssize_t hotkey_radio_sw_show(struct device *dev, 2878 struct device_attribute *attr, 2879 char *buf) 2880 { 2881 int res; 2882 res = hotkey_get_wlsw(); 2883 if (res < 0) 2884 return res; 2885 2886 /* Opportunistic update */ 2887 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2888 2889 return sysfs_emit(buf, "%d\n", 2890 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2891 } 2892 2893 static DEVICE_ATTR_RO(hotkey_radio_sw); 2894 2895 static void hotkey_radio_sw_notify_change(void) 2896 { 2897 if (tp_features.hotkey_wlsw) 2898 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2899 "hotkey_radio_sw"); 2900 } 2901 2902 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2903 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2904 struct device_attribute *attr, 2905 char *buf) 2906 { 2907 int res, s; 2908 res = hotkey_get_tablet_mode(&s); 2909 if (res < 0) 2910 return res; 2911 2912 return sysfs_emit(buf, "%d\n", !!s); 2913 } 2914 2915 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2916 2917 static void hotkey_tablet_mode_notify_change(void) 2918 { 2919 if (tp_features.hotkey_tablet) 2920 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2921 "hotkey_tablet_mode"); 2922 } 2923 2924 /* sysfs wakeup reason (pollable) -------------------------------------- */ 2925 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 2926 struct device_attribute *attr, 2927 char *buf) 2928 { 2929 return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason); 2930 } 2931 2932 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 2933 2934 static void hotkey_wakeup_reason_notify_change(void) 2935 { 2936 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2937 "wakeup_reason"); 2938 } 2939 2940 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 2941 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 2942 struct device_attribute *attr, 2943 char *buf) 2944 { 2945 return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack); 2946 } 2947 2948 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 2949 hotkey_wakeup_hotunplug_complete_show, NULL); 2950 2951 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 2952 { 2953 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2954 "wakeup_hotunplug_complete"); 2955 } 2956 2957 /* sysfs adaptive kbd mode --------------------------------------------- */ 2958 2959 static int adaptive_keyboard_get_mode(void); 2960 static int adaptive_keyboard_set_mode(int new_mode); 2961 2962 enum ADAPTIVE_KEY_MODE { 2963 HOME_MODE, 2964 WEB_BROWSER_MODE, 2965 WEB_CONFERENCE_MODE, 2966 FUNCTION_MODE, 2967 LAYFLAT_MODE 2968 }; 2969 2970 static ssize_t adaptive_kbd_mode_show(struct device *dev, 2971 struct device_attribute *attr, 2972 char *buf) 2973 { 2974 int current_mode; 2975 2976 current_mode = adaptive_keyboard_get_mode(); 2977 if (current_mode < 0) 2978 return current_mode; 2979 2980 return sysfs_emit(buf, "%d\n", current_mode); 2981 } 2982 2983 static ssize_t adaptive_kbd_mode_store(struct device *dev, 2984 struct device_attribute *attr, 2985 const char *buf, size_t count) 2986 { 2987 unsigned long t; 2988 int res; 2989 2990 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 2991 return -EINVAL; 2992 2993 res = adaptive_keyboard_set_mode(t); 2994 return (res < 0) ? res : count; 2995 } 2996 2997 static DEVICE_ATTR_RW(adaptive_kbd_mode); 2998 2999 static struct attribute *adaptive_kbd_attributes[] = { 3000 &dev_attr_adaptive_kbd_mode.attr, 3001 NULL 3002 }; 3003 3004 static const struct attribute_group adaptive_kbd_attr_group = { 3005 .attrs = adaptive_kbd_attributes, 3006 }; 3007 3008 /* --------------------------------------------------------------------- */ 3009 3010 static struct attribute *hotkey_attributes[] = { 3011 &dev_attr_hotkey_enable.attr, 3012 &dev_attr_hotkey_bios_enabled.attr, 3013 &dev_attr_hotkey_bios_mask.attr, 3014 &dev_attr_wakeup_reason.attr, 3015 &dev_attr_wakeup_hotunplug_complete.attr, 3016 &dev_attr_hotkey_mask.attr, 3017 &dev_attr_hotkey_all_mask.attr, 3018 &dev_attr_hotkey_adaptive_all_mask.attr, 3019 &dev_attr_hotkey_recommended_mask.attr, 3020 &dev_attr_hotkey_tablet_mode.attr, 3021 &dev_attr_hotkey_radio_sw.attr, 3022 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3023 &dev_attr_hotkey_source_mask.attr, 3024 &dev_attr_hotkey_poll_freq.attr, 3025 #endif 3026 NULL 3027 }; 3028 3029 static umode_t hotkey_attr_is_visible(struct kobject *kobj, 3030 struct attribute *attr, int n) 3031 { 3032 if (attr == &dev_attr_hotkey_tablet_mode.attr) { 3033 if (!tp_features.hotkey_tablet) 3034 return 0; 3035 } else if (attr == &dev_attr_hotkey_radio_sw.attr) { 3036 if (!tp_features.hotkey_wlsw) 3037 return 0; 3038 } 3039 3040 return attr->mode; 3041 } 3042 3043 static const struct attribute_group hotkey_attr_group = { 3044 .is_visible = hotkey_attr_is_visible, 3045 .attrs = hotkey_attributes, 3046 }; 3047 3048 /* 3049 * Sync both the hw and sw blocking state of all switches 3050 */ 3051 static void tpacpi_send_radiosw_update(void) 3052 { 3053 int wlsw; 3054 3055 /* 3056 * We must sync all rfkill controllers *before* issuing any 3057 * rfkill input events, or we will race the rfkill core input 3058 * handler. 3059 * 3060 * tpacpi_inputdev_send_mutex works as a synchronization point 3061 * for the above. 3062 * 3063 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3064 */ 3065 3066 wlsw = hotkey_get_wlsw(); 3067 3068 /* Sync hw blocking state first if it is hw-blocked */ 3069 if (wlsw == TPACPI_RFK_RADIO_OFF) 3070 tpacpi_rfk_update_hwblock_state(true); 3071 3072 /* Sync hw blocking state last if it is hw-unblocked */ 3073 if (wlsw == TPACPI_RFK_RADIO_ON) 3074 tpacpi_rfk_update_hwblock_state(false); 3075 3076 /* Issue rfkill input event for WLSW switch */ 3077 if (!(wlsw < 0)) { 3078 mutex_lock(&tpacpi_inputdev_send_mutex); 3079 3080 input_report_switch(tpacpi_inputdev, 3081 SW_RFKILL_ALL, (wlsw > 0)); 3082 input_sync(tpacpi_inputdev); 3083 3084 mutex_unlock(&tpacpi_inputdev_send_mutex); 3085 } 3086 3087 /* 3088 * this can be unconditional, as we will poll state again 3089 * if userspace uses the notify to read data 3090 */ 3091 hotkey_radio_sw_notify_change(); 3092 } 3093 3094 static void hotkey_exit(void) 3095 { 3096 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3097 mutex_lock(&hotkey_mutex); 3098 hotkey_poll_stop_sync(); 3099 mutex_unlock(&hotkey_mutex); 3100 #endif 3101 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &hotkey_attr_group); 3102 3103 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3104 "restoring original HKEY status and mask\n"); 3105 /* yes, there is a bitwise or below, we want the 3106 * functions to be called even if one of them fail */ 3107 if (((tp_features.hotkey_mask && 3108 hotkey_mask_set(hotkey_orig_mask)) | 3109 hotkey_status_set(false)) != 0) 3110 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3111 } 3112 3113 static void __init hotkey_unmap(const unsigned int scancode) 3114 { 3115 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3116 clear_bit(hotkey_keycode_map[scancode], 3117 tpacpi_inputdev->keybit); 3118 hotkey_keycode_map[scancode] = KEY_RESERVED; 3119 } 3120 } 3121 3122 /* 3123 * HKEY quirks: 3124 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3125 */ 3126 3127 #define TPACPI_HK_Q_INIMASK 0x0001 3128 3129 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3130 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3131 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3132 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3133 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3134 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3135 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3136 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3137 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3138 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3139 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3140 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3141 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3142 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3143 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3144 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3145 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3146 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3147 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3148 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3149 }; 3150 3151 typedef u16 tpacpi_keymap_entry_t; 3152 typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; 3153 3154 static int hotkey_init_tablet_mode(void) 3155 { 3156 int in_tablet_mode = 0, res; 3157 char *type = NULL; 3158 3159 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3160 int has_tablet_mode; 3161 3162 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3163 &has_tablet_mode); 3164 /* 3165 * The Yoga 11e series has 2 accelerometers described by a 3166 * BOSC0200 ACPI node. This setup relies on a Windows service 3167 * which calls special ACPI methods on this node to report 3168 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver 3169 * does not support this, so skip the hotkey on these models. 3170 */ 3171 if (has_tablet_mode && !dual_accel_detect()) 3172 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3173 type = "GMMS"; 3174 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3175 /* For X41t, X60t, X61t Tablets... */ 3176 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3177 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3178 type = "MHKG"; 3179 } 3180 3181 if (!tp_features.hotkey_tablet) 3182 return 0; 3183 3184 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3185 type, in_tablet_mode ? "tablet" : "laptop"); 3186 3187 return in_tablet_mode; 3188 } 3189 3190 static int __init hotkey_init(struct ibm_init_struct *iibm) 3191 { 3192 /* Requirements for changing the default keymaps: 3193 * 3194 * 1. Many of the keys are mapped to KEY_RESERVED for very 3195 * good reasons. Do not change them unless you have deep 3196 * knowledge on the IBM and Lenovo ThinkPad firmware for 3197 * the various ThinkPad models. The driver behaves 3198 * differently for KEY_RESERVED: such keys have their 3199 * hot key mask *unset* in mask_recommended, and also 3200 * in the initial hot key mask programmed into the 3201 * firmware at driver load time, which means the firm- 3202 * ware may react very differently if you change them to 3203 * something else; 3204 * 3205 * 2. You must be subscribed to the linux-thinkpad and 3206 * ibm-acpi-devel mailing lists, and you should read the 3207 * list archives since 2007 if you want to change the 3208 * keymaps. This requirement exists so that you will 3209 * know the past history of problems with the thinkpad- 3210 * acpi driver keymaps, and also that you will be 3211 * listening to any bug reports; 3212 * 3213 * 3. Do not send thinkpad-acpi specific patches directly to 3214 * for merging, *ever*. Send them to the linux-acpi 3215 * mailinglist for comments. Merging is to be done only 3216 * through acpi-test and the ACPI maintainer. 3217 * 3218 * If the above is too much to ask, don't change the keymap. 3219 * Ask the thinkpad-acpi maintainer to do it, instead. 3220 */ 3221 3222 enum keymap_index { 3223 TPACPI_KEYMAP_IBM_GENERIC = 0, 3224 TPACPI_KEYMAP_LENOVO_GENERIC, 3225 }; 3226 3227 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3228 /* Generic keymap for IBM ThinkPads */ 3229 [TPACPI_KEYMAP_IBM_GENERIC] = { 3230 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3231 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3232 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3233 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3234 3235 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3236 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3237 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3238 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3239 3240 /* brightness: firmware always reacts to them */ 3241 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3242 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3243 3244 /* Thinklight: firmware always react to it */ 3245 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3246 3247 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3248 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3249 3250 /* Volume: firmware always react to it and reprograms 3251 * the built-in *extra* mixer. Never map it to control 3252 * another mixer by default. */ 3253 KEY_RESERVED, /* 0x14: VOLUME UP */ 3254 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3255 KEY_RESERVED, /* 0x16: MUTE */ 3256 3257 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3258 3259 /* (assignments unknown, please report if found) */ 3260 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3261 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3262 3263 /* No assignments, only used for Adaptive keyboards. */ 3264 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3265 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3266 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3267 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3268 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3269 3270 /* No assignment, used for newer Lenovo models */ 3271 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3272 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3273 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3274 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3275 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3276 KEY_UNKNOWN, KEY_UNKNOWN 3277 3278 }, 3279 3280 /* Generic keymap for Lenovo ThinkPads */ 3281 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3282 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3283 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3284 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3285 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3286 3287 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3288 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3289 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3290 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3291 3292 /* These should be enabled --only-- when ACPI video 3293 * is disabled (i.e. in "vendor" mode), and are handled 3294 * in a special way by the init code */ 3295 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3296 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3297 3298 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3299 3300 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3301 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3302 3303 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3304 * react to it and reprograms the built-in *extra* mixer. 3305 * Never map it to control another mixer by default. 3306 * 3307 * T60?, T61, R60?, R61: firmware and EC tries to send 3308 * these over the regular keyboard, so these are no-ops, 3309 * but there are still weird bugs re. MUTE, so do not 3310 * change unless you get test reports from all Lenovo 3311 * models. May cause the BIOS to interfere with the 3312 * HDA mixer. 3313 */ 3314 KEY_RESERVED, /* 0x14: VOLUME UP */ 3315 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3316 KEY_RESERVED, /* 0x16: MUTE */ 3317 3318 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3319 3320 /* (assignments unknown, please report if found) */ 3321 KEY_UNKNOWN, KEY_UNKNOWN, 3322 3323 /* 3324 * The mic mute button only sends 0x1a. It does not 3325 * automatically mute the mic or change the mute light. 3326 */ 3327 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3328 3329 /* (assignments unknown, please report if found) */ 3330 KEY_UNKNOWN, 3331 3332 /* Extra keys in use since the X240 / T440 / T540 */ 3333 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3334 3335 /* 3336 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3337 * The first item in this list is the Mute button which is 3338 * emitted with 0x103 through 3339 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3340 * symbol is held. 3341 * We'll need to offset those by 0x20. 3342 */ 3343 KEY_RESERVED, /* Mute held, 0x103 */ 3344 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3345 KEY_RESERVED, /* Clipping tool */ 3346 KEY_RESERVED, /* Cloud */ 3347 KEY_RESERVED, 3348 KEY_VOICECOMMAND, /* Voice */ 3349 KEY_RESERVED, 3350 KEY_RESERVED, /* Gestures */ 3351 KEY_RESERVED, 3352 KEY_RESERVED, 3353 KEY_RESERVED, 3354 KEY_CONFIG, /* Settings */ 3355 KEY_RESERVED, /* New tab */ 3356 KEY_REFRESH, /* Reload */ 3357 KEY_BACK, /* Back */ 3358 KEY_RESERVED, /* Microphone down */ 3359 KEY_RESERVED, /* Microphone up */ 3360 KEY_RESERVED, /* Microphone cancellation */ 3361 KEY_RESERVED, /* Camera mode */ 3362 KEY_RESERVED, /* Rotate display, 0x116 */ 3363 3364 /* 3365 * These are found in 2017 models (e.g. T470s, X270). 3366 * The lowest known value is 0x311, which according to 3367 * the manual should launch a user defined favorite 3368 * application. 3369 * 3370 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3371 * corresponding to 0x34. 3372 */ 3373 3374 /* (assignments unknown, please report if found) */ 3375 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3376 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3377 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3378 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3379 KEY_UNKNOWN, 3380 3381 KEY_BOOKMARKS, /* Favorite app, 0x311 */ 3382 KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */ 3383 KEY_CALC, /* Calculator (above numpad, P52) */ 3384 KEY_BLUETOOTH, /* Bluetooth */ 3385 KEY_KEYBOARD, /* Keyboard, 0x315 */ 3386 KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */ 3387 KEY_NOTIFICATION_CENTER, /* Notification Center */ 3388 KEY_PICKUP_PHONE, /* Answer incoming call */ 3389 KEY_HANGUP_PHONE, /* Decline incoming call */ 3390 }, 3391 }; 3392 3393 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3394 /* Generic maps (fallback) */ 3395 { 3396 .vendor = PCI_VENDOR_ID_IBM, 3397 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3398 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3399 }, 3400 { 3401 .vendor = PCI_VENDOR_ID_LENOVO, 3402 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3403 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3404 }, 3405 }; 3406 3407 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3408 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3409 3410 int res, i; 3411 int status; 3412 int hkeyv; 3413 bool radiosw_state = false; 3414 bool tabletsw_state = false; 3415 3416 unsigned long quirks; 3417 unsigned long keymap_id; 3418 3419 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3420 "initializing hotkey subdriver\n"); 3421 3422 BUG_ON(!tpacpi_inputdev); 3423 BUG_ON(tpacpi_inputdev->open != NULL || 3424 tpacpi_inputdev->close != NULL); 3425 3426 TPACPI_ACPIHANDLE_INIT(hkey); 3427 mutex_init(&hotkey_mutex); 3428 3429 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3430 mutex_init(&hotkey_thread_data_mutex); 3431 #endif 3432 3433 /* hotkey not supported on 570 */ 3434 tp_features.hotkey = hkey_handle != NULL; 3435 3436 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3437 "hotkeys are %s\n", 3438 str_supported(tp_features.hotkey)); 3439 3440 if (!tp_features.hotkey) 3441 return 1; 3442 3443 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3444 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3445 3446 tpacpi_disable_brightness_delay(); 3447 3448 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3449 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3450 for HKEY interface version 0x100 */ 3451 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3452 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3453 "firmware HKEY interface version: 0x%x\n", 3454 hkeyv); 3455 3456 switch (hkeyv >> 8) { 3457 case 1: 3458 /* 3459 * MHKV 0x100 in A31, R40, R40e, 3460 * T4x, X31, and later 3461 */ 3462 3463 /* Paranoia check AND init hotkey_all_mask */ 3464 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3465 "MHKA", "qd")) { 3466 pr_err("missing MHKA handler, please report this to %s\n", 3467 TPACPI_MAIL); 3468 /* Fallback: pre-init for FN+F3,F4,F12 */ 3469 hotkey_all_mask = 0x080cU; 3470 } else { 3471 tp_features.hotkey_mask = 1; 3472 } 3473 break; 3474 3475 case 2: 3476 /* 3477 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3478 */ 3479 3480 /* Paranoia check AND init hotkey_all_mask */ 3481 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3482 "MHKA", "dd", 1)) { 3483 pr_err("missing MHKA handler, please report this to %s\n", 3484 TPACPI_MAIL); 3485 /* Fallback: pre-init for FN+F3,F4,F12 */ 3486 hotkey_all_mask = 0x080cU; 3487 } else { 3488 tp_features.hotkey_mask = 1; 3489 } 3490 3491 /* 3492 * Check if we have an adaptive keyboard, like on the 3493 * Lenovo Carbon X1 2014 (2nd Gen). 3494 */ 3495 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3496 "MHKA", "dd", 2)) { 3497 if (hotkey_adaptive_all_mask != 0) { 3498 tp_features.has_adaptive_kbd = true; 3499 res = sysfs_create_group( 3500 &tpacpi_pdev->dev.kobj, 3501 &adaptive_kbd_attr_group); 3502 if (res) 3503 goto err_exit; 3504 } 3505 } else { 3506 tp_features.has_adaptive_kbd = false; 3507 hotkey_adaptive_all_mask = 0x0U; 3508 } 3509 break; 3510 3511 default: 3512 pr_err("unknown version of the HKEY interface: 0x%x\n", 3513 hkeyv); 3514 pr_err("please report this to %s\n", TPACPI_MAIL); 3515 break; 3516 } 3517 } 3518 3519 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3520 "hotkey masks are %s\n", 3521 str_supported(tp_features.hotkey_mask)); 3522 3523 /* Init hotkey_all_mask if not initialized yet */ 3524 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3525 (quirks & TPACPI_HK_Q_INIMASK)) 3526 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3527 3528 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3529 if (tp_features.hotkey_mask) { 3530 /* hotkey_source_mask *must* be zero for 3531 * the first hotkey_mask_get to return hotkey_orig_mask */ 3532 res = hotkey_mask_get(); 3533 if (res) 3534 goto err_exit; 3535 3536 hotkey_orig_mask = hotkey_acpi_mask; 3537 } else { 3538 hotkey_orig_mask = hotkey_all_mask; 3539 hotkey_acpi_mask = hotkey_all_mask; 3540 } 3541 3542 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3543 if (dbg_wlswemul) { 3544 tp_features.hotkey_wlsw = 1; 3545 radiosw_state = !!tpacpi_wlsw_emulstate; 3546 pr_info("radio switch emulation enabled\n"); 3547 } else 3548 #endif 3549 /* Not all thinkpads have a hardware radio switch */ 3550 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3551 tp_features.hotkey_wlsw = 1; 3552 radiosw_state = !!status; 3553 pr_info("radio switch found; radios are %s\n", 3554 enabled(status, 0)); 3555 } 3556 3557 tabletsw_state = hotkey_init_tablet_mode(); 3558 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, &hotkey_attr_group); 3559 if (res) 3560 goto err_exit; 3561 3562 /* Set up key map */ 3563 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3564 ARRAY_SIZE(tpacpi_keymap_qtable)); 3565 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3566 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3567 "using keymap number %lu\n", keymap_id); 3568 3569 hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id], 3570 TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); 3571 if (!hotkey_keycode_map) { 3572 pr_err("failed to allocate memory for key map\n"); 3573 res = -ENOMEM; 3574 goto err_exit; 3575 } 3576 3577 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3578 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3579 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3580 tpacpi_inputdev->keycode = hotkey_keycode_map; 3581 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3582 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3583 input_set_capability(tpacpi_inputdev, EV_KEY, 3584 hotkey_keycode_map[i]); 3585 } else { 3586 if (i < sizeof(hotkey_reserved_mask)*8) 3587 hotkey_reserved_mask |= 1 << i; 3588 } 3589 } 3590 3591 if (tp_features.hotkey_wlsw) { 3592 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3593 input_report_switch(tpacpi_inputdev, 3594 SW_RFKILL_ALL, radiosw_state); 3595 } 3596 if (tp_features.hotkey_tablet) { 3597 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3598 input_report_switch(tpacpi_inputdev, 3599 SW_TABLET_MODE, tabletsw_state); 3600 } 3601 3602 /* Do not issue duplicate brightness change events to 3603 * userspace. tpacpi_detect_brightness_capabilities() must have 3604 * been called before this point */ 3605 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3606 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3607 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3608 3609 /* Disable brightness up/down on Lenovo thinkpads when 3610 * ACPI is handling them, otherwise it is plain impossible 3611 * for userspace to do something even remotely sane */ 3612 hotkey_reserved_mask |= 3613 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3614 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3615 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3616 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3617 } 3618 3619 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3620 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3621 & ~hotkey_all_mask 3622 & ~hotkey_reserved_mask; 3623 3624 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3625 "hotkey source mask 0x%08x, polling freq %u\n", 3626 hotkey_source_mask, hotkey_poll_freq); 3627 #endif 3628 3629 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3630 "enabling firmware HKEY event interface...\n"); 3631 res = hotkey_status_set(true); 3632 if (res) { 3633 hotkey_exit(); 3634 return res; 3635 } 3636 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3637 | hotkey_driver_mask) 3638 & ~hotkey_source_mask); 3639 if (res < 0 && res != -ENXIO) { 3640 hotkey_exit(); 3641 return res; 3642 } 3643 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3644 & ~hotkey_reserved_mask; 3645 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3646 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3647 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3648 3649 tpacpi_inputdev->open = &hotkey_inputdev_open; 3650 tpacpi_inputdev->close = &hotkey_inputdev_close; 3651 3652 hotkey_poll_setup_safe(true); 3653 3654 return 0; 3655 3656 err_exit: 3657 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &hotkey_attr_group); 3658 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &adaptive_kbd_attr_group); 3659 3660 return (res < 0) ? res : 1; 3661 } 3662 3663 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3664 * mode, Web conference mode, Function mode and Lay-flat mode. 3665 * We support Home mode and Function mode currently. 3666 * 3667 * Will consider support rest of modes in future. 3668 * 3669 */ 3670 static const int adaptive_keyboard_modes[] = { 3671 HOME_MODE, 3672 /* WEB_BROWSER_MODE = 2, 3673 WEB_CONFERENCE_MODE = 3, */ 3674 FUNCTION_MODE 3675 }; 3676 3677 #define DFR_CHANGE_ROW 0x101 3678 #define DFR_SHOW_QUICKVIEW_ROW 0x102 3679 #define FIRST_ADAPTIVE_KEY 0x103 3680 3681 /* press Fn key a while second, it will switch to Function Mode. Then 3682 * release Fn key, previous mode be restored. 3683 */ 3684 static bool adaptive_keyboard_mode_is_saved; 3685 static int adaptive_keyboard_prev_mode; 3686 3687 static int adaptive_keyboard_get_mode(void) 3688 { 3689 int mode = 0; 3690 3691 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3692 pr_err("Cannot read adaptive keyboard mode\n"); 3693 return -EIO; 3694 } 3695 3696 return mode; 3697 } 3698 3699 static int adaptive_keyboard_set_mode(int new_mode) 3700 { 3701 if (new_mode < 0 || 3702 new_mode > LAYFLAT_MODE) 3703 return -EINVAL; 3704 3705 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3706 pr_err("Cannot set adaptive keyboard mode\n"); 3707 return -EIO; 3708 } 3709 3710 return 0; 3711 } 3712 3713 static int adaptive_keyboard_get_next_mode(int mode) 3714 { 3715 size_t i; 3716 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3717 3718 for (i = 0; i <= max_mode; i++) { 3719 if (adaptive_keyboard_modes[i] == mode) 3720 break; 3721 } 3722 3723 if (i >= max_mode) 3724 i = 0; 3725 else 3726 i++; 3727 3728 return adaptive_keyboard_modes[i]; 3729 } 3730 3731 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3732 { 3733 int current_mode = 0; 3734 int new_mode = 0; 3735 int keycode; 3736 3737 switch (scancode) { 3738 case DFR_CHANGE_ROW: 3739 if (adaptive_keyboard_mode_is_saved) { 3740 new_mode = adaptive_keyboard_prev_mode; 3741 adaptive_keyboard_mode_is_saved = false; 3742 } else { 3743 current_mode = adaptive_keyboard_get_mode(); 3744 if (current_mode < 0) 3745 return false; 3746 new_mode = adaptive_keyboard_get_next_mode( 3747 current_mode); 3748 } 3749 3750 if (adaptive_keyboard_set_mode(new_mode) < 0) 3751 return false; 3752 3753 return true; 3754 3755 case DFR_SHOW_QUICKVIEW_ROW: 3756 current_mode = adaptive_keyboard_get_mode(); 3757 if (current_mode < 0) 3758 return false; 3759 3760 adaptive_keyboard_prev_mode = current_mode; 3761 adaptive_keyboard_mode_is_saved = true; 3762 3763 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3764 return false; 3765 return true; 3766 3767 default: 3768 if (scancode < FIRST_ADAPTIVE_KEY || 3769 scancode >= FIRST_ADAPTIVE_KEY + 3770 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3771 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3772 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3773 scancode); 3774 return false; 3775 } 3776 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3777 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3778 if (keycode != KEY_RESERVED) { 3779 mutex_lock(&tpacpi_inputdev_send_mutex); 3780 3781 input_report_key(tpacpi_inputdev, keycode, 1); 3782 input_sync(tpacpi_inputdev); 3783 3784 input_report_key(tpacpi_inputdev, keycode, 0); 3785 input_sync(tpacpi_inputdev); 3786 3787 mutex_unlock(&tpacpi_inputdev_send_mutex); 3788 } 3789 return true; 3790 } 3791 } 3792 3793 static bool hotkey_notify_extended_hotkey(const u32 hkey) 3794 { 3795 unsigned int scancode; 3796 3797 switch (hkey) { 3798 case TP_HKEY_EV_PRIVACYGUARD_TOGGLE: 3799 tpacpi_driver_event(hkey); 3800 return true; 3801 } 3802 3803 /* Extended keycodes start at 0x300 and our offset into the map 3804 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3805 * will be positive, but might not be in the correct range. 3806 */ 3807 scancode = (hkey & 0xfff) - (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3808 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3809 scancode < TPACPI_HOTKEY_MAP_LEN) { 3810 tpacpi_input_send_key(scancode); 3811 return true; 3812 } 3813 3814 return false; 3815 } 3816 3817 static bool hotkey_notify_hotkey(const u32 hkey, 3818 bool *send_acpi_ev, 3819 bool *ignore_acpi_ev) 3820 { 3821 /* 0x1000-0x1FFF: key presses */ 3822 unsigned int scancode = hkey & 0xfff; 3823 *send_acpi_ev = true; 3824 *ignore_acpi_ev = false; 3825 3826 /* 3827 * Original events are in the 0x10XX range, the adaptive keyboard 3828 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3829 * models, additional keys are emitted through 0x13XX. 3830 */ 3831 switch ((hkey >> 8) & 0xf) { 3832 case 0: 3833 if (scancode > 0 && 3834 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3835 /* HKEY event 0x1001 is scancode 0x00 */ 3836 scancode--; 3837 if (!(hotkey_source_mask & (1 << scancode))) { 3838 tpacpi_input_send_key_masked(scancode); 3839 *send_acpi_ev = false; 3840 } else { 3841 *ignore_acpi_ev = true; 3842 } 3843 return true; 3844 } 3845 break; 3846 3847 case 1: 3848 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3849 3850 case 3: 3851 return hotkey_notify_extended_hotkey(hkey); 3852 } 3853 3854 return false; 3855 } 3856 3857 static bool hotkey_notify_wakeup(const u32 hkey, 3858 bool *send_acpi_ev, 3859 bool *ignore_acpi_ev) 3860 { 3861 /* 0x2000-0x2FFF: Wakeup reason */ 3862 *send_acpi_ev = true; 3863 *ignore_acpi_ev = false; 3864 3865 switch (hkey) { 3866 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3867 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3868 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3869 *ignore_acpi_ev = true; 3870 break; 3871 3872 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3873 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3874 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3875 *ignore_acpi_ev = true; 3876 break; 3877 3878 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3879 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3880 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3881 /* how to auto-heal: */ 3882 /* 2313: woke up from S3, go to S4/S5 */ 3883 /* 2413: woke up from S4, go to S5 */ 3884 break; 3885 3886 default: 3887 return false; 3888 } 3889 3890 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3891 pr_info("woke up due to a hot-unplug request...\n"); 3892 hotkey_wakeup_reason_notify_change(); 3893 } 3894 return true; 3895 } 3896 3897 static bool hotkey_notify_dockevent(const u32 hkey, 3898 bool *send_acpi_ev, 3899 bool *ignore_acpi_ev) 3900 { 3901 /* 0x4000-0x4FFF: dock-related events */ 3902 *send_acpi_ev = true; 3903 *ignore_acpi_ev = false; 3904 3905 switch (hkey) { 3906 case TP_HKEY_EV_UNDOCK_ACK: 3907 /* ACPI undock operation completed after wakeup */ 3908 hotkey_autosleep_ack = 1; 3909 pr_info("undocked\n"); 3910 hotkey_wakeup_hotunplug_complete_notify_change(); 3911 return true; 3912 3913 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3914 pr_info("docked into hotplug port replicator\n"); 3915 return true; 3916 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3917 pr_info("undocked from hotplug port replicator\n"); 3918 return true; 3919 3920 /* 3921 * Deliberately ignore attaching and detaching the keybord cover to avoid 3922 * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events 3923 * to userspace. 3924 * 3925 * Please refer to the following thread for more information and a preliminary 3926 * implementation using the GTOP ("Get Tablet OPtions") interface that could be 3927 * extended to other attachment options of the ThinkPad X1 Tablet series, such as 3928 * the Pico cartridge dock module: 3929 * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/ 3930 */ 3931 case TP_HKEY_EV_KBD_COVER_ATTACH: 3932 case TP_HKEY_EV_KBD_COVER_DETACH: 3933 *send_acpi_ev = false; 3934 *ignore_acpi_ev = true; 3935 return true; 3936 3937 default: 3938 return false; 3939 } 3940 } 3941 3942 static bool hotkey_notify_usrevent(const u32 hkey, 3943 bool *send_acpi_ev, 3944 bool *ignore_acpi_ev) 3945 { 3946 /* 0x5000-0x5FFF: human interface helpers */ 3947 *send_acpi_ev = true; 3948 *ignore_acpi_ev = false; 3949 3950 switch (hkey) { 3951 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 3952 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 3953 return true; 3954 3955 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 3956 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 3957 tpacpi_input_send_tabletsw(); 3958 hotkey_tablet_mode_notify_change(); 3959 *send_acpi_ev = false; 3960 return true; 3961 3962 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 3963 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 3964 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 3965 /* do not propagate these events */ 3966 *ignore_acpi_ev = true; 3967 return true; 3968 3969 default: 3970 return false; 3971 } 3972 } 3973 3974 static void thermal_dump_all_sensors(void); 3975 static void palmsensor_refresh(void); 3976 3977 static bool hotkey_notify_6xxx(const u32 hkey, 3978 bool *send_acpi_ev, 3979 bool *ignore_acpi_ev) 3980 { 3981 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 3982 *send_acpi_ev = true; 3983 *ignore_acpi_ev = false; 3984 3985 switch (hkey) { 3986 case TP_HKEY_EV_THM_TABLE_CHANGED: 3987 pr_debug("EC reports: Thermal Table has changed\n"); 3988 /* recommended action: do nothing, we don't have 3989 * Lenovo ATM information */ 3990 return true; 3991 case TP_HKEY_EV_THM_CSM_COMPLETED: 3992 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 3993 /* Thermal event - pass on to event handler */ 3994 tpacpi_driver_event(hkey); 3995 return true; 3996 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 3997 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 3998 /* recommended action: do nothing, we don't have 3999 * Lenovo ATM information */ 4000 return true; 4001 case TP_HKEY_EV_ALARM_BAT_HOT: 4002 pr_crit("THERMAL ALARM: battery is too hot!\n"); 4003 /* recommended action: warn user through gui */ 4004 break; 4005 case TP_HKEY_EV_ALARM_BAT_XHOT: 4006 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 4007 /* recommended action: immediate sleep/hibernate */ 4008 break; 4009 case TP_HKEY_EV_ALARM_SENSOR_HOT: 4010 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 4011 /* recommended action: warn user through gui, that */ 4012 /* some internal component is too hot */ 4013 break; 4014 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 4015 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 4016 /* recommended action: immediate sleep/hibernate */ 4017 break; 4018 case TP_HKEY_EV_AC_CHANGED: 4019 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 4020 * AC status changed; can be triggered by plugging or 4021 * unplugging AC adapter, docking or undocking. */ 4022 4023 fallthrough; 4024 4025 case TP_HKEY_EV_KEY_NUMLOCK: 4026 case TP_HKEY_EV_KEY_FN: 4027 /* key press events, we just ignore them as long as the EC 4028 * is still reporting them in the normal keyboard stream */ 4029 *send_acpi_ev = false; 4030 *ignore_acpi_ev = true; 4031 return true; 4032 4033 case TP_HKEY_EV_KEY_FN_ESC: 4034 /* Get the media key status to force the status LED to update */ 4035 acpi_evalf(hkey_handle, NULL, "GMKS", "v"); 4036 *send_acpi_ev = false; 4037 *ignore_acpi_ev = true; 4038 return true; 4039 4040 case TP_HKEY_EV_TABLET_CHANGED: 4041 tpacpi_input_send_tabletsw(); 4042 hotkey_tablet_mode_notify_change(); 4043 *send_acpi_ev = false; 4044 return true; 4045 4046 case TP_HKEY_EV_PALM_DETECTED: 4047 case TP_HKEY_EV_PALM_UNDETECTED: 4048 /* palm detected - pass on to event handler */ 4049 palmsensor_refresh(); 4050 return true; 4051 4052 default: 4053 /* report simply as unknown, no sensor dump */ 4054 return false; 4055 } 4056 4057 thermal_dump_all_sensors(); 4058 return true; 4059 } 4060 4061 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 4062 { 4063 u32 hkey; 4064 bool send_acpi_ev; 4065 bool ignore_acpi_ev; 4066 bool known_ev; 4067 4068 if (event != 0x80) { 4069 pr_err("unknown HKEY notification event %d\n", event); 4070 /* forward it to userspace, maybe it knows how to handle it */ 4071 acpi_bus_generate_netlink_event( 4072 ibm->acpi->device->pnp.device_class, 4073 dev_name(&ibm->acpi->device->dev), 4074 event, 0); 4075 return; 4076 } 4077 4078 while (1) { 4079 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4080 pr_err("failed to retrieve HKEY event\n"); 4081 return; 4082 } 4083 4084 if (hkey == 0) { 4085 /* queue empty */ 4086 return; 4087 } 4088 4089 send_acpi_ev = true; 4090 ignore_acpi_ev = false; 4091 4092 switch (hkey >> 12) { 4093 case 1: 4094 /* 0x1000-0x1FFF: key presses */ 4095 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4096 &ignore_acpi_ev); 4097 break; 4098 case 2: 4099 /* 0x2000-0x2FFF: Wakeup reason */ 4100 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4101 &ignore_acpi_ev); 4102 break; 4103 case 3: 4104 /* 0x3000-0x3FFF: bay-related wakeups */ 4105 switch (hkey) { 4106 case TP_HKEY_EV_BAYEJ_ACK: 4107 hotkey_autosleep_ack = 1; 4108 pr_info("bay ejected\n"); 4109 hotkey_wakeup_hotunplug_complete_notify_change(); 4110 known_ev = true; 4111 break; 4112 case TP_HKEY_EV_OPTDRV_EJ: 4113 /* FIXME: kick libata if SATA link offline */ 4114 known_ev = true; 4115 break; 4116 default: 4117 known_ev = false; 4118 } 4119 break; 4120 case 4: 4121 /* 0x4000-0x4FFF: dock-related events */ 4122 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4123 &ignore_acpi_ev); 4124 break; 4125 case 5: 4126 /* 0x5000-0x5FFF: human interface helpers */ 4127 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4128 &ignore_acpi_ev); 4129 break; 4130 case 6: 4131 /* 0x6000-0x6FFF: thermal alarms/notices and 4132 * keyboard events */ 4133 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4134 &ignore_acpi_ev); 4135 break; 4136 case 7: 4137 /* 0x7000-0x7FFF: misc */ 4138 if (tp_features.hotkey_wlsw && 4139 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4140 tpacpi_send_radiosw_update(); 4141 send_acpi_ev = 0; 4142 known_ev = true; 4143 break; 4144 } 4145 fallthrough; /* to default */ 4146 default: 4147 known_ev = false; 4148 } 4149 if (!known_ev) { 4150 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4151 pr_notice("please report the conditions when this event happened to %s\n", 4152 TPACPI_MAIL); 4153 } 4154 4155 /* netlink events */ 4156 if (!ignore_acpi_ev && send_acpi_ev) { 4157 acpi_bus_generate_netlink_event( 4158 ibm->acpi->device->pnp.device_class, 4159 dev_name(&ibm->acpi->device->dev), 4160 event, hkey); 4161 } 4162 } 4163 } 4164 4165 static void hotkey_suspend(void) 4166 { 4167 /* Do these on suspend, we get the events on early resume! */ 4168 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4169 hotkey_autosleep_ack = 0; 4170 4171 /* save previous mode of adaptive keyboard of X1 Carbon */ 4172 if (tp_features.has_adaptive_kbd) { 4173 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4174 "GTRW", "dd", 0)) { 4175 pr_err("Cannot read adaptive keyboard mode.\n"); 4176 } 4177 } 4178 } 4179 4180 static void hotkey_resume(void) 4181 { 4182 tpacpi_disable_brightness_delay(); 4183 4184 if (hotkey_status_set(true) < 0 || 4185 hotkey_mask_set(hotkey_acpi_mask) < 0) 4186 pr_err("error while attempting to reset the event firmware interface\n"); 4187 4188 tpacpi_send_radiosw_update(); 4189 tpacpi_input_send_tabletsw(); 4190 hotkey_tablet_mode_notify_change(); 4191 hotkey_wakeup_reason_notify_change(); 4192 hotkey_wakeup_hotunplug_complete_notify_change(); 4193 hotkey_poll_setup_safe(false); 4194 4195 /* restore previous mode of adapive keyboard of X1 Carbon */ 4196 if (tp_features.has_adaptive_kbd) { 4197 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4198 adaptive_keyboard_prev_mode)) { 4199 pr_err("Cannot set adaptive keyboard mode.\n"); 4200 } 4201 } 4202 } 4203 4204 /* procfs -------------------------------------------------------------- */ 4205 static int hotkey_read(struct seq_file *m) 4206 { 4207 int res, status; 4208 4209 if (!tp_features.hotkey) { 4210 seq_printf(m, "status:\t\tnot supported\n"); 4211 return 0; 4212 } 4213 4214 if (mutex_lock_killable(&hotkey_mutex)) 4215 return -ERESTARTSYS; 4216 res = hotkey_status_get(&status); 4217 if (!res) 4218 res = hotkey_mask_get(); 4219 mutex_unlock(&hotkey_mutex); 4220 if (res) 4221 return res; 4222 4223 seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); 4224 if (hotkey_all_mask) { 4225 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4226 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4227 } else { 4228 seq_printf(m, "mask:\t\tnot supported\n"); 4229 seq_printf(m, "commands:\tenable, disable, reset\n"); 4230 } 4231 4232 return 0; 4233 } 4234 4235 static void hotkey_enabledisable_warn(bool enable) 4236 { 4237 tpacpi_log_usertask("procfs hotkey enable/disable"); 4238 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4239 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4240 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4241 } 4242 4243 static int hotkey_write(char *buf) 4244 { 4245 int res; 4246 u32 mask; 4247 char *cmd; 4248 4249 if (!tp_features.hotkey) 4250 return -ENODEV; 4251 4252 if (mutex_lock_killable(&hotkey_mutex)) 4253 return -ERESTARTSYS; 4254 4255 mask = hotkey_user_mask; 4256 4257 res = 0; 4258 while ((cmd = strsep(&buf, ","))) { 4259 if (strlencmp(cmd, "enable") == 0) { 4260 hotkey_enabledisable_warn(1); 4261 } else if (strlencmp(cmd, "disable") == 0) { 4262 hotkey_enabledisable_warn(0); 4263 res = -EPERM; 4264 } else if (strlencmp(cmd, "reset") == 0) { 4265 mask = (hotkey_all_mask | hotkey_source_mask) 4266 & ~hotkey_reserved_mask; 4267 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4268 /* mask set */ 4269 } else if (sscanf(cmd, "%x", &mask) == 1) { 4270 /* mask set */ 4271 } else { 4272 res = -EINVAL; 4273 goto errexit; 4274 } 4275 } 4276 4277 if (!res) { 4278 tpacpi_disclose_usertask("procfs hotkey", 4279 "set mask to 0x%08x\n", mask); 4280 res = hotkey_user_mask_set(mask); 4281 } 4282 4283 errexit: 4284 mutex_unlock(&hotkey_mutex); 4285 return res; 4286 } 4287 4288 static const struct acpi_device_id ibm_htk_device_ids[] = { 4289 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4290 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4291 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4292 {"", 0}, 4293 }; 4294 4295 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4296 .hid = ibm_htk_device_ids, 4297 .notify = hotkey_notify, 4298 .handle = &hkey_handle, 4299 .type = ACPI_DEVICE_NOTIFY, 4300 }; 4301 4302 static struct ibm_struct hotkey_driver_data = { 4303 .name = "hotkey", 4304 .read = hotkey_read, 4305 .write = hotkey_write, 4306 .exit = hotkey_exit, 4307 .resume = hotkey_resume, 4308 .suspend = hotkey_suspend, 4309 .acpi = &ibm_hotkey_acpidriver, 4310 }; 4311 4312 /************************************************************************* 4313 * Bluetooth subdriver 4314 */ 4315 4316 enum { 4317 /* ACPI GBDC/SBDC bits */ 4318 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4319 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4320 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4321 0 = disable, 1 = enable */ 4322 }; 4323 4324 enum { 4325 /* ACPI \BLTH commands */ 4326 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4327 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4328 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4329 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4330 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4331 }; 4332 4333 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4334 4335 static int bluetooth_get_status(void) 4336 { 4337 int status; 4338 4339 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4340 if (dbg_bluetoothemul) 4341 return (tpacpi_bluetooth_emulstate) ? 4342 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4343 #endif 4344 4345 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4346 return -EIO; 4347 4348 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4349 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4350 } 4351 4352 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4353 { 4354 int status; 4355 4356 vdbg_printk(TPACPI_DBG_RFKILL, 4357 "will attempt to %s bluetooth\n", 4358 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4359 4360 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4361 if (dbg_bluetoothemul) { 4362 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4363 return 0; 4364 } 4365 #endif 4366 4367 if (state == TPACPI_RFK_RADIO_ON) 4368 status = TP_ACPI_BLUETOOTH_RADIOSSW 4369 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4370 else 4371 status = 0; 4372 4373 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4374 return -EIO; 4375 4376 return 0; 4377 } 4378 4379 /* sysfs bluetooth enable ---------------------------------------------- */ 4380 static ssize_t bluetooth_enable_show(struct device *dev, 4381 struct device_attribute *attr, 4382 char *buf) 4383 { 4384 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4385 attr, buf); 4386 } 4387 4388 static ssize_t bluetooth_enable_store(struct device *dev, 4389 struct device_attribute *attr, 4390 const char *buf, size_t count) 4391 { 4392 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4393 attr, buf, count); 4394 } 4395 4396 static DEVICE_ATTR_RW(bluetooth_enable); 4397 4398 /* --------------------------------------------------------------------- */ 4399 4400 static struct attribute *bluetooth_attributes[] = { 4401 &dev_attr_bluetooth_enable.attr, 4402 NULL 4403 }; 4404 4405 static const struct attribute_group bluetooth_attr_group = { 4406 .attrs = bluetooth_attributes, 4407 }; 4408 4409 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4410 .get_status = bluetooth_get_status, 4411 .set_status = bluetooth_set_status, 4412 }; 4413 4414 static void bluetooth_shutdown(void) 4415 { 4416 /* Order firmware to save current state to NVRAM */ 4417 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4418 TP_ACPI_BLTH_SAVE_STATE)) 4419 pr_notice("failed to save bluetooth state to NVRAM\n"); 4420 else 4421 vdbg_printk(TPACPI_DBG_RFKILL, 4422 "bluetooth state saved to NVRAM\n"); 4423 } 4424 4425 static void bluetooth_exit(void) 4426 { 4427 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4428 &bluetooth_attr_group); 4429 4430 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4431 4432 bluetooth_shutdown(); 4433 } 4434 4435 static const struct dmi_system_id bt_fwbug_list[] __initconst = { 4436 { 4437 .ident = "ThinkPad E485", 4438 .matches = { 4439 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4440 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4441 }, 4442 }, 4443 { 4444 .ident = "ThinkPad E585", 4445 .matches = { 4446 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4447 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4448 }, 4449 }, 4450 { 4451 .ident = "ThinkPad A285 - 20MW", 4452 .matches = { 4453 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4454 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4455 }, 4456 }, 4457 { 4458 .ident = "ThinkPad A285 - 20MX", 4459 .matches = { 4460 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4461 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4462 }, 4463 }, 4464 { 4465 .ident = "ThinkPad A485 - 20MU", 4466 .matches = { 4467 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4468 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4469 }, 4470 }, 4471 { 4472 .ident = "ThinkPad A485 - 20MV", 4473 .matches = { 4474 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4475 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4476 }, 4477 }, 4478 {} 4479 }; 4480 4481 static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4482 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4483 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4484 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4485 {} 4486 }; 4487 4488 4489 static int __init have_bt_fwbug(void) 4490 { 4491 /* 4492 * Some AMD based ThinkPads have a firmware bug that calling 4493 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4494 */ 4495 if (dmi_check_system(bt_fwbug_list) && pci_dev_present(fwbug_cards_ids)) { 4496 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4497 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4498 return 1; 4499 } else 4500 return 0; 4501 } 4502 4503 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4504 { 4505 int res; 4506 int status = 0; 4507 4508 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4509 "initializing bluetooth subdriver\n"); 4510 4511 TPACPI_ACPIHANDLE_INIT(hkey); 4512 4513 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4514 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4515 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4516 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4517 4518 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4519 "bluetooth is %s, status 0x%02x\n", 4520 str_supported(tp_features.bluetooth), 4521 status); 4522 4523 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4524 if (dbg_bluetoothemul) { 4525 tp_features.bluetooth = 1; 4526 pr_info("bluetooth switch emulation enabled\n"); 4527 } else 4528 #endif 4529 if (tp_features.bluetooth && 4530 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4531 /* no bluetooth hardware present in system */ 4532 tp_features.bluetooth = 0; 4533 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4534 "bluetooth hardware not installed\n"); 4535 } 4536 4537 if (!tp_features.bluetooth) 4538 return 1; 4539 4540 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4541 &bluetooth_tprfk_ops, 4542 RFKILL_TYPE_BLUETOOTH, 4543 TPACPI_RFK_BLUETOOTH_SW_NAME, 4544 true); 4545 if (res) 4546 return res; 4547 4548 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4549 &bluetooth_attr_group); 4550 if (res) { 4551 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4552 return res; 4553 } 4554 4555 return 0; 4556 } 4557 4558 /* procfs -------------------------------------------------------------- */ 4559 static int bluetooth_read(struct seq_file *m) 4560 { 4561 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4562 } 4563 4564 static int bluetooth_write(char *buf) 4565 { 4566 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4567 } 4568 4569 static struct ibm_struct bluetooth_driver_data = { 4570 .name = "bluetooth", 4571 .read = bluetooth_read, 4572 .write = bluetooth_write, 4573 .exit = bluetooth_exit, 4574 .shutdown = bluetooth_shutdown, 4575 }; 4576 4577 /************************************************************************* 4578 * Wan subdriver 4579 */ 4580 4581 enum { 4582 /* ACPI GWAN/SWAN bits */ 4583 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4584 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4585 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4586 0 = disable, 1 = enable */ 4587 }; 4588 4589 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4590 4591 static int wan_get_status(void) 4592 { 4593 int status; 4594 4595 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4596 if (dbg_wwanemul) 4597 return (tpacpi_wwan_emulstate) ? 4598 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4599 #endif 4600 4601 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4602 return -EIO; 4603 4604 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4605 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4606 } 4607 4608 static int wan_set_status(enum tpacpi_rfkill_state state) 4609 { 4610 int status; 4611 4612 vdbg_printk(TPACPI_DBG_RFKILL, 4613 "will attempt to %s wwan\n", 4614 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4615 4616 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4617 if (dbg_wwanemul) { 4618 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4619 return 0; 4620 } 4621 #endif 4622 4623 if (state == TPACPI_RFK_RADIO_ON) 4624 status = TP_ACPI_WANCARD_RADIOSSW 4625 | TP_ACPI_WANCARD_RESUMECTRL; 4626 else 4627 status = 0; 4628 4629 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4630 return -EIO; 4631 4632 return 0; 4633 } 4634 4635 /* sysfs wan enable ---------------------------------------------------- */ 4636 static ssize_t wan_enable_show(struct device *dev, 4637 struct device_attribute *attr, 4638 char *buf) 4639 { 4640 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4641 attr, buf); 4642 } 4643 4644 static ssize_t wan_enable_store(struct device *dev, 4645 struct device_attribute *attr, 4646 const char *buf, size_t count) 4647 { 4648 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4649 attr, buf, count); 4650 } 4651 4652 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4653 wan_enable_show, wan_enable_store); 4654 4655 /* --------------------------------------------------------------------- */ 4656 4657 static struct attribute *wan_attributes[] = { 4658 &dev_attr_wwan_enable.attr, 4659 NULL 4660 }; 4661 4662 static const struct attribute_group wan_attr_group = { 4663 .attrs = wan_attributes, 4664 }; 4665 4666 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4667 .get_status = wan_get_status, 4668 .set_status = wan_set_status, 4669 }; 4670 4671 static void wan_shutdown(void) 4672 { 4673 /* Order firmware to save current state to NVRAM */ 4674 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4675 TP_ACPI_WGSV_SAVE_STATE)) 4676 pr_notice("failed to save WWAN state to NVRAM\n"); 4677 else 4678 vdbg_printk(TPACPI_DBG_RFKILL, 4679 "WWAN state saved to NVRAM\n"); 4680 } 4681 4682 static void wan_exit(void) 4683 { 4684 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4685 &wan_attr_group); 4686 4687 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4688 4689 wan_shutdown(); 4690 } 4691 4692 static int __init wan_init(struct ibm_init_struct *iibm) 4693 { 4694 int res; 4695 int status = 0; 4696 4697 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4698 "initializing wan subdriver\n"); 4699 4700 TPACPI_ACPIHANDLE_INIT(hkey); 4701 4702 tp_features.wan = hkey_handle && 4703 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4704 4705 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4706 "wan is %s, status 0x%02x\n", 4707 str_supported(tp_features.wan), 4708 status); 4709 4710 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4711 if (dbg_wwanemul) { 4712 tp_features.wan = 1; 4713 pr_info("wwan switch emulation enabled\n"); 4714 } else 4715 #endif 4716 if (tp_features.wan && 4717 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4718 /* no wan hardware present in system */ 4719 tp_features.wan = 0; 4720 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4721 "wan hardware not installed\n"); 4722 } 4723 4724 if (!tp_features.wan) 4725 return 1; 4726 4727 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4728 &wan_tprfk_ops, 4729 RFKILL_TYPE_WWAN, 4730 TPACPI_RFK_WWAN_SW_NAME, 4731 true); 4732 if (res) 4733 return res; 4734 4735 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4736 &wan_attr_group); 4737 4738 if (res) { 4739 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4740 return res; 4741 } 4742 4743 return 0; 4744 } 4745 4746 /* procfs -------------------------------------------------------------- */ 4747 static int wan_read(struct seq_file *m) 4748 { 4749 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4750 } 4751 4752 static int wan_write(char *buf) 4753 { 4754 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4755 } 4756 4757 static struct ibm_struct wan_driver_data = { 4758 .name = "wan", 4759 .read = wan_read, 4760 .write = wan_write, 4761 .exit = wan_exit, 4762 .shutdown = wan_shutdown, 4763 }; 4764 4765 /************************************************************************* 4766 * UWB subdriver 4767 */ 4768 4769 enum { 4770 /* ACPI GUWB/SUWB bits */ 4771 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4772 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4773 }; 4774 4775 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4776 4777 static int uwb_get_status(void) 4778 { 4779 int status; 4780 4781 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4782 if (dbg_uwbemul) 4783 return (tpacpi_uwb_emulstate) ? 4784 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4785 #endif 4786 4787 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4788 return -EIO; 4789 4790 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4791 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4792 } 4793 4794 static int uwb_set_status(enum tpacpi_rfkill_state state) 4795 { 4796 int status; 4797 4798 vdbg_printk(TPACPI_DBG_RFKILL, 4799 "will attempt to %s UWB\n", 4800 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4801 4802 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4803 if (dbg_uwbemul) { 4804 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4805 return 0; 4806 } 4807 #endif 4808 4809 if (state == TPACPI_RFK_RADIO_ON) 4810 status = TP_ACPI_UWB_RADIOSSW; 4811 else 4812 status = 0; 4813 4814 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4815 return -EIO; 4816 4817 return 0; 4818 } 4819 4820 /* --------------------------------------------------------------------- */ 4821 4822 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4823 .get_status = uwb_get_status, 4824 .set_status = uwb_set_status, 4825 }; 4826 4827 static void uwb_exit(void) 4828 { 4829 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4830 } 4831 4832 static int __init uwb_init(struct ibm_init_struct *iibm) 4833 { 4834 int res; 4835 int status = 0; 4836 4837 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4838 "initializing uwb subdriver\n"); 4839 4840 TPACPI_ACPIHANDLE_INIT(hkey); 4841 4842 tp_features.uwb = hkey_handle && 4843 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4844 4845 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4846 "uwb is %s, status 0x%02x\n", 4847 str_supported(tp_features.uwb), 4848 status); 4849 4850 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4851 if (dbg_uwbemul) { 4852 tp_features.uwb = 1; 4853 pr_info("uwb switch emulation enabled\n"); 4854 } else 4855 #endif 4856 if (tp_features.uwb && 4857 !(status & TP_ACPI_UWB_HWPRESENT)) { 4858 /* no uwb hardware present in system */ 4859 tp_features.uwb = 0; 4860 dbg_printk(TPACPI_DBG_INIT, 4861 "uwb hardware not installed\n"); 4862 } 4863 4864 if (!tp_features.uwb) 4865 return 1; 4866 4867 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4868 &uwb_tprfk_ops, 4869 RFKILL_TYPE_UWB, 4870 TPACPI_RFK_UWB_SW_NAME, 4871 false); 4872 return res; 4873 } 4874 4875 static struct ibm_struct uwb_driver_data = { 4876 .name = "uwb", 4877 .exit = uwb_exit, 4878 .flags.experimental = 1, 4879 }; 4880 4881 /************************************************************************* 4882 * Video subdriver 4883 */ 4884 4885 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4886 4887 enum video_access_mode { 4888 TPACPI_VIDEO_NONE = 0, 4889 TPACPI_VIDEO_570, /* 570 */ 4890 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4891 TPACPI_VIDEO_NEW, /* all others */ 4892 }; 4893 4894 enum { /* video status flags, based on VIDEO_570 */ 4895 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4896 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4897 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4898 }; 4899 4900 enum { /* TPACPI_VIDEO_570 constants */ 4901 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4902 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4903 * video_status_flags */ 4904 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4905 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4906 }; 4907 4908 static enum video_access_mode video_supported; 4909 static int video_orig_autosw; 4910 4911 static int video_autosw_get(void); 4912 static int video_autosw_set(int enable); 4913 4914 TPACPI_HANDLE(vid, root, 4915 "\\_SB.PCI.AGP.VGA", /* 570 */ 4916 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4917 "\\_SB.PCI0.VID0", /* 770e */ 4918 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4919 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4920 "\\_SB.PCI0.AGP.VID", /* all others */ 4921 ); /* R30, R31 */ 4922 4923 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4924 4925 static int __init video_init(struct ibm_init_struct *iibm) 4926 { 4927 int ivga; 4928 4929 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4930 4931 TPACPI_ACPIHANDLE_INIT(vid); 4932 if (tpacpi_is_ibm()) 4933 TPACPI_ACPIHANDLE_INIT(vid2); 4934 4935 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4936 /* G41, assume IVGA doesn't change */ 4937 vid_handle = vid2_handle; 4938 4939 if (!vid_handle) 4940 /* video switching not supported on R30, R31 */ 4941 video_supported = TPACPI_VIDEO_NONE; 4942 else if (tpacpi_is_ibm() && 4943 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4944 /* 570 */ 4945 video_supported = TPACPI_VIDEO_570; 4946 else if (tpacpi_is_ibm() && 4947 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4948 /* 600e/x, 770e, 770x */ 4949 video_supported = TPACPI_VIDEO_770; 4950 else 4951 /* all others */ 4952 video_supported = TPACPI_VIDEO_NEW; 4953 4954 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4955 str_supported(video_supported != TPACPI_VIDEO_NONE), 4956 video_supported); 4957 4958 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1; 4959 } 4960 4961 static void video_exit(void) 4962 { 4963 dbg_printk(TPACPI_DBG_EXIT, 4964 "restoring original video autoswitch mode\n"); 4965 if (video_autosw_set(video_orig_autosw)) 4966 pr_err("error while trying to restore original video autoswitch mode\n"); 4967 } 4968 4969 static int video_outputsw_get(void) 4970 { 4971 int status = 0; 4972 int i; 4973 4974 switch (video_supported) { 4975 case TPACPI_VIDEO_570: 4976 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 4977 TP_ACPI_VIDEO_570_PHSCMD)) 4978 return -EIO; 4979 status = i & TP_ACPI_VIDEO_570_PHSMASK; 4980 break; 4981 case TPACPI_VIDEO_770: 4982 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 4983 return -EIO; 4984 if (i) 4985 status |= TP_ACPI_VIDEO_S_LCD; 4986 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 4987 return -EIO; 4988 if (i) 4989 status |= TP_ACPI_VIDEO_S_CRT; 4990 break; 4991 case TPACPI_VIDEO_NEW: 4992 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 4993 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 4994 return -EIO; 4995 if (i) 4996 status |= TP_ACPI_VIDEO_S_CRT; 4997 4998 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 4999 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 5000 return -EIO; 5001 if (i) 5002 status |= TP_ACPI_VIDEO_S_LCD; 5003 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 5004 return -EIO; 5005 if (i) 5006 status |= TP_ACPI_VIDEO_S_DVI; 5007 break; 5008 default: 5009 return -ENOSYS; 5010 } 5011 5012 return status; 5013 } 5014 5015 static int video_outputsw_set(int status) 5016 { 5017 int autosw; 5018 int res = 0; 5019 5020 switch (video_supported) { 5021 case TPACPI_VIDEO_570: 5022 res = acpi_evalf(NULL, NULL, 5023 "\\_SB.PHS2", "vdd", 5024 TP_ACPI_VIDEO_570_PHS2CMD, 5025 status | TP_ACPI_VIDEO_570_PHS2SET); 5026 break; 5027 case TPACPI_VIDEO_770: 5028 autosw = video_autosw_get(); 5029 if (autosw < 0) 5030 return autosw; 5031 5032 res = video_autosw_set(1); 5033 if (res) 5034 return res; 5035 res = acpi_evalf(vid_handle, NULL, 5036 "ASWT", "vdd", status * 0x100, 0); 5037 if (!autosw && video_autosw_set(autosw)) { 5038 pr_err("video auto-switch left enabled due to error\n"); 5039 return -EIO; 5040 } 5041 break; 5042 case TPACPI_VIDEO_NEW: 5043 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 5044 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 5045 break; 5046 default: 5047 return -ENOSYS; 5048 } 5049 5050 return (res) ? 0 : -EIO; 5051 } 5052 5053 static int video_autosw_get(void) 5054 { 5055 int autosw = 0; 5056 5057 switch (video_supported) { 5058 case TPACPI_VIDEO_570: 5059 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 5060 return -EIO; 5061 break; 5062 case TPACPI_VIDEO_770: 5063 case TPACPI_VIDEO_NEW: 5064 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 5065 return -EIO; 5066 break; 5067 default: 5068 return -ENOSYS; 5069 } 5070 5071 return autosw & 1; 5072 } 5073 5074 static int video_autosw_set(int enable) 5075 { 5076 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 5077 return -EIO; 5078 return 0; 5079 } 5080 5081 static int video_outputsw_cycle(void) 5082 { 5083 int autosw = video_autosw_get(); 5084 int res; 5085 5086 if (autosw < 0) 5087 return autosw; 5088 5089 switch (video_supported) { 5090 case TPACPI_VIDEO_570: 5091 res = video_autosw_set(1); 5092 if (res) 5093 return res; 5094 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5095 break; 5096 case TPACPI_VIDEO_770: 5097 case TPACPI_VIDEO_NEW: 5098 res = video_autosw_set(1); 5099 if (res) 5100 return res; 5101 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5102 break; 5103 default: 5104 return -ENOSYS; 5105 } 5106 if (!autosw && video_autosw_set(autosw)) { 5107 pr_err("video auto-switch left enabled due to error\n"); 5108 return -EIO; 5109 } 5110 5111 return (res) ? 0 : -EIO; 5112 } 5113 5114 static int video_expand_toggle(void) 5115 { 5116 switch (video_supported) { 5117 case TPACPI_VIDEO_570: 5118 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5119 0 : -EIO; 5120 case TPACPI_VIDEO_770: 5121 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5122 0 : -EIO; 5123 case TPACPI_VIDEO_NEW: 5124 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5125 0 : -EIO; 5126 default: 5127 return -ENOSYS; 5128 } 5129 /* not reached */ 5130 } 5131 5132 static int video_read(struct seq_file *m) 5133 { 5134 int status, autosw; 5135 5136 if (video_supported == TPACPI_VIDEO_NONE) { 5137 seq_printf(m, "status:\t\tnot supported\n"); 5138 return 0; 5139 } 5140 5141 /* Even reads can crash X.org, so... */ 5142 if (!capable(CAP_SYS_ADMIN)) 5143 return -EPERM; 5144 5145 status = video_outputsw_get(); 5146 if (status < 0) 5147 return status; 5148 5149 autosw = video_autosw_get(); 5150 if (autosw < 0) 5151 return autosw; 5152 5153 seq_printf(m, "status:\t\tsupported\n"); 5154 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); 5155 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); 5156 if (video_supported == TPACPI_VIDEO_NEW) 5157 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); 5158 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); 5159 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5160 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5161 if (video_supported == TPACPI_VIDEO_NEW) 5162 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5163 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5164 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5165 5166 return 0; 5167 } 5168 5169 static int video_write(char *buf) 5170 { 5171 char *cmd; 5172 int enable, disable, status; 5173 int res; 5174 5175 if (video_supported == TPACPI_VIDEO_NONE) 5176 return -ENODEV; 5177 5178 /* Even reads can crash X.org, let alone writes... */ 5179 if (!capable(CAP_SYS_ADMIN)) 5180 return -EPERM; 5181 5182 enable = 0; 5183 disable = 0; 5184 5185 while ((cmd = strsep(&buf, ","))) { 5186 if (strlencmp(cmd, "lcd_enable") == 0) { 5187 enable |= TP_ACPI_VIDEO_S_LCD; 5188 } else if (strlencmp(cmd, "lcd_disable") == 0) { 5189 disable |= TP_ACPI_VIDEO_S_LCD; 5190 } else if (strlencmp(cmd, "crt_enable") == 0) { 5191 enable |= TP_ACPI_VIDEO_S_CRT; 5192 } else if (strlencmp(cmd, "crt_disable") == 0) { 5193 disable |= TP_ACPI_VIDEO_S_CRT; 5194 } else if (video_supported == TPACPI_VIDEO_NEW && 5195 strlencmp(cmd, "dvi_enable") == 0) { 5196 enable |= TP_ACPI_VIDEO_S_DVI; 5197 } else if (video_supported == TPACPI_VIDEO_NEW && 5198 strlencmp(cmd, "dvi_disable") == 0) { 5199 disable |= TP_ACPI_VIDEO_S_DVI; 5200 } else if (strlencmp(cmd, "auto_enable") == 0) { 5201 res = video_autosw_set(1); 5202 if (res) 5203 return res; 5204 } else if (strlencmp(cmd, "auto_disable") == 0) { 5205 res = video_autosw_set(0); 5206 if (res) 5207 return res; 5208 } else if (strlencmp(cmd, "video_switch") == 0) { 5209 res = video_outputsw_cycle(); 5210 if (res) 5211 return res; 5212 } else if (strlencmp(cmd, "expand_toggle") == 0) { 5213 res = video_expand_toggle(); 5214 if (res) 5215 return res; 5216 } else 5217 return -EINVAL; 5218 } 5219 5220 if (enable || disable) { 5221 status = video_outputsw_get(); 5222 if (status < 0) 5223 return status; 5224 res = video_outputsw_set((status & ~disable) | enable); 5225 if (res) 5226 return res; 5227 } 5228 5229 return 0; 5230 } 5231 5232 static struct ibm_struct video_driver_data = { 5233 .name = "video", 5234 .read = video_read, 5235 .write = video_write, 5236 .exit = video_exit, 5237 }; 5238 5239 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5240 5241 /************************************************************************* 5242 * Keyboard backlight subdriver 5243 */ 5244 5245 static enum led_brightness kbdlight_brightness; 5246 static DEFINE_MUTEX(kbdlight_mutex); 5247 5248 static int kbdlight_set_level(int level) 5249 { 5250 int ret = 0; 5251 5252 if (!hkey_handle) 5253 return -ENXIO; 5254 5255 mutex_lock(&kbdlight_mutex); 5256 5257 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5258 ret = -EIO; 5259 else 5260 kbdlight_brightness = level; 5261 5262 mutex_unlock(&kbdlight_mutex); 5263 5264 return ret; 5265 } 5266 5267 static int kbdlight_get_level(void) 5268 { 5269 int status = 0; 5270 5271 if (!hkey_handle) 5272 return -ENXIO; 5273 5274 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5275 return -EIO; 5276 5277 if (status < 0) 5278 return status; 5279 5280 return status & 0x3; 5281 } 5282 5283 static bool kbdlight_is_supported(void) 5284 { 5285 int status = 0; 5286 5287 if (!hkey_handle) 5288 return false; 5289 5290 if (!acpi_has_method(hkey_handle, "MLCG")) { 5291 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5292 return false; 5293 } 5294 5295 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5296 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5297 return false; 5298 } 5299 5300 if (status < 0) { 5301 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5302 return false; 5303 } 5304 5305 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5306 /* 5307 * Guessed test for keyboard backlight: 5308 * 5309 * Machines with backlight keyboard return: 5310 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5311 * b110100010010000000XX - ThinkPad x230 5312 * b010100000010000000XX - ThinkPad x240 5313 * b010100000010000000XX - ThinkPad W541 5314 * (XX is current backlight level) 5315 * 5316 * Machines without backlight keyboard return: 5317 * b10100001000000000000 - ThinkPad x230 5318 * b10110001000000000000 - ThinkPad E430 5319 * b00000000000000000000 - ThinkPad E450 5320 * 5321 * Candidate BITs for detection test (XOR): 5322 * b01000000001000000000 5323 * ^ 5324 */ 5325 return status & BIT(9); 5326 } 5327 5328 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5329 enum led_brightness brightness) 5330 { 5331 return kbdlight_set_level(brightness); 5332 } 5333 5334 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5335 { 5336 int level; 5337 5338 level = kbdlight_get_level(); 5339 if (level < 0) 5340 return 0; 5341 5342 return level; 5343 } 5344 5345 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5346 .led_classdev = { 5347 .name = "tpacpi::kbd_backlight", 5348 .max_brightness = 2, 5349 .flags = LED_BRIGHT_HW_CHANGED, 5350 .brightness_set_blocking = &kbdlight_sysfs_set, 5351 .brightness_get = &kbdlight_sysfs_get, 5352 } 5353 }; 5354 5355 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5356 { 5357 int rc; 5358 5359 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5360 5361 TPACPI_ACPIHANDLE_INIT(hkey); 5362 5363 if (!kbdlight_is_supported()) { 5364 tp_features.kbdlight = 0; 5365 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5366 return 1; 5367 } 5368 5369 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5370 tp_features.kbdlight = 1; 5371 5372 rc = led_classdev_register(&tpacpi_pdev->dev, 5373 &tpacpi_led_kbdlight.led_classdev); 5374 if (rc < 0) { 5375 tp_features.kbdlight = 0; 5376 return rc; 5377 } 5378 5379 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5380 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5381 return 0; 5382 } 5383 5384 static void kbdlight_exit(void) 5385 { 5386 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5387 } 5388 5389 static int kbdlight_set_level_and_update(int level) 5390 { 5391 int ret; 5392 struct led_classdev *led_cdev; 5393 5394 ret = kbdlight_set_level(level); 5395 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5396 5397 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5398 led_cdev->brightness = level; 5399 5400 return ret; 5401 } 5402 5403 static int kbdlight_read(struct seq_file *m) 5404 { 5405 int level; 5406 5407 if (!tp_features.kbdlight) { 5408 seq_printf(m, "status:\t\tnot supported\n"); 5409 } else { 5410 level = kbdlight_get_level(); 5411 if (level < 0) 5412 seq_printf(m, "status:\t\terror %d\n", level); 5413 else 5414 seq_printf(m, "status:\t\t%d\n", level); 5415 seq_printf(m, "commands:\t0, 1, 2\n"); 5416 } 5417 5418 return 0; 5419 } 5420 5421 static int kbdlight_write(char *buf) 5422 { 5423 char *cmd; 5424 int res, level = -EINVAL; 5425 5426 if (!tp_features.kbdlight) 5427 return -ENODEV; 5428 5429 while ((cmd = strsep(&buf, ","))) { 5430 res = kstrtoint(cmd, 10, &level); 5431 if (res < 0) 5432 return res; 5433 } 5434 5435 if (level >= 3 || level < 0) 5436 return -EINVAL; 5437 5438 return kbdlight_set_level_and_update(level); 5439 } 5440 5441 static void kbdlight_suspend(void) 5442 { 5443 struct led_classdev *led_cdev; 5444 5445 if (!tp_features.kbdlight) 5446 return; 5447 5448 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5449 led_update_brightness(led_cdev); 5450 led_classdev_suspend(led_cdev); 5451 } 5452 5453 static void kbdlight_resume(void) 5454 { 5455 if (!tp_features.kbdlight) 5456 return; 5457 5458 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5459 } 5460 5461 static struct ibm_struct kbdlight_driver_data = { 5462 .name = "kbdlight", 5463 .read = kbdlight_read, 5464 .write = kbdlight_write, 5465 .suspend = kbdlight_suspend, 5466 .resume = kbdlight_resume, 5467 .exit = kbdlight_exit, 5468 }; 5469 5470 /************************************************************************* 5471 * Light (thinklight) subdriver 5472 */ 5473 5474 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5475 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5476 5477 static int light_get_status(void) 5478 { 5479 int status = 0; 5480 5481 if (tp_features.light_status) { 5482 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5483 return -EIO; 5484 return (!!status); 5485 } 5486 5487 return -ENXIO; 5488 } 5489 5490 static int light_set_status(int status) 5491 { 5492 int rc; 5493 5494 if (tp_features.light) { 5495 if (cmos_handle) { 5496 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5497 (status) ? 5498 TP_CMOS_THINKLIGHT_ON : 5499 TP_CMOS_THINKLIGHT_OFF); 5500 } else { 5501 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5502 (status) ? 1 : 0); 5503 } 5504 return (rc) ? 0 : -EIO; 5505 } 5506 5507 return -ENXIO; 5508 } 5509 5510 static int light_sysfs_set(struct led_classdev *led_cdev, 5511 enum led_brightness brightness) 5512 { 5513 return light_set_status((brightness != LED_OFF) ? 5514 TPACPI_LED_ON : TPACPI_LED_OFF); 5515 } 5516 5517 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5518 { 5519 return (light_get_status() == 1) ? LED_FULL : LED_OFF; 5520 } 5521 5522 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5523 .led_classdev = { 5524 .name = "tpacpi::thinklight", 5525 .brightness_set_blocking = &light_sysfs_set, 5526 .brightness_get = &light_sysfs_get, 5527 } 5528 }; 5529 5530 static int __init light_init(struct ibm_init_struct *iibm) 5531 { 5532 int rc; 5533 5534 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5535 5536 if (tpacpi_is_ibm()) { 5537 TPACPI_ACPIHANDLE_INIT(ledb); 5538 TPACPI_ACPIHANDLE_INIT(lght); 5539 } 5540 TPACPI_ACPIHANDLE_INIT(cmos); 5541 5542 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5543 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5544 5545 if (tp_features.light) 5546 /* light status not supported on 5547 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5548 tp_features.light_status = 5549 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5550 5551 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5552 str_supported(tp_features.light), 5553 str_supported(tp_features.light_status)); 5554 5555 if (!tp_features.light) 5556 return 1; 5557 5558 rc = led_classdev_register(&tpacpi_pdev->dev, 5559 &tpacpi_led_thinklight.led_classdev); 5560 5561 if (rc < 0) { 5562 tp_features.light = 0; 5563 tp_features.light_status = 0; 5564 } else { 5565 rc = 0; 5566 } 5567 5568 return rc; 5569 } 5570 5571 static void light_exit(void) 5572 { 5573 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5574 } 5575 5576 static int light_read(struct seq_file *m) 5577 { 5578 int status; 5579 5580 if (!tp_features.light) { 5581 seq_printf(m, "status:\t\tnot supported\n"); 5582 } else if (!tp_features.light_status) { 5583 seq_printf(m, "status:\t\tunknown\n"); 5584 seq_printf(m, "commands:\ton, off\n"); 5585 } else { 5586 status = light_get_status(); 5587 if (status < 0) 5588 return status; 5589 seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); 5590 seq_printf(m, "commands:\ton, off\n"); 5591 } 5592 5593 return 0; 5594 } 5595 5596 static int light_write(char *buf) 5597 { 5598 char *cmd; 5599 int newstatus = 0; 5600 5601 if (!tp_features.light) 5602 return -ENODEV; 5603 5604 while ((cmd = strsep(&buf, ","))) { 5605 if (strlencmp(cmd, "on") == 0) { 5606 newstatus = 1; 5607 } else if (strlencmp(cmd, "off") == 0) { 5608 newstatus = 0; 5609 } else 5610 return -EINVAL; 5611 } 5612 5613 return light_set_status(newstatus); 5614 } 5615 5616 static struct ibm_struct light_driver_data = { 5617 .name = "light", 5618 .read = light_read, 5619 .write = light_write, 5620 .exit = light_exit, 5621 }; 5622 5623 /************************************************************************* 5624 * CMOS subdriver 5625 */ 5626 5627 /* sysfs cmos_command -------------------------------------------------- */ 5628 static ssize_t cmos_command_store(struct device *dev, 5629 struct device_attribute *attr, 5630 const char *buf, size_t count) 5631 { 5632 unsigned long cmos_cmd; 5633 int res; 5634 5635 if (parse_strtoul(buf, 21, &cmos_cmd)) 5636 return -EINVAL; 5637 5638 res = issue_thinkpad_cmos_command(cmos_cmd); 5639 return (res) ? res : count; 5640 } 5641 5642 static DEVICE_ATTR_WO(cmos_command); 5643 5644 /* --------------------------------------------------------------------- */ 5645 5646 static int __init cmos_init(struct ibm_init_struct *iibm) 5647 { 5648 int res; 5649 5650 vdbg_printk(TPACPI_DBG_INIT, 5651 "initializing cmos commands subdriver\n"); 5652 5653 TPACPI_ACPIHANDLE_INIT(cmos); 5654 5655 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5656 str_supported(cmos_handle != NULL)); 5657 5658 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5659 if (res) 5660 return res; 5661 5662 return (cmos_handle) ? 0 : 1; 5663 } 5664 5665 static void cmos_exit(void) 5666 { 5667 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5668 } 5669 5670 static int cmos_read(struct seq_file *m) 5671 { 5672 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5673 R30, R31, T20-22, X20-21 */ 5674 if (!cmos_handle) 5675 seq_printf(m, "status:\t\tnot supported\n"); 5676 else { 5677 seq_printf(m, "status:\t\tsupported\n"); 5678 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5679 } 5680 5681 return 0; 5682 } 5683 5684 static int cmos_write(char *buf) 5685 { 5686 char *cmd; 5687 int cmos_cmd, res; 5688 5689 while ((cmd = strsep(&buf, ","))) { 5690 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5691 cmos_cmd >= 0 && cmos_cmd <= 21) { 5692 /* cmos_cmd set */ 5693 } else 5694 return -EINVAL; 5695 5696 res = issue_thinkpad_cmos_command(cmos_cmd); 5697 if (res) 5698 return res; 5699 } 5700 5701 return 0; 5702 } 5703 5704 static struct ibm_struct cmos_driver_data = { 5705 .name = "cmos", 5706 .read = cmos_read, 5707 .write = cmos_write, 5708 .exit = cmos_exit, 5709 }; 5710 5711 /************************************************************************* 5712 * LED subdriver 5713 */ 5714 5715 enum led_access_mode { 5716 TPACPI_LED_NONE = 0, 5717 TPACPI_LED_570, /* 570 */ 5718 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5719 TPACPI_LED_NEW, /* all others */ 5720 }; 5721 5722 enum { /* For TPACPI_LED_OLD */ 5723 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5724 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5725 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5726 }; 5727 5728 static enum led_access_mode led_supported; 5729 5730 static acpi_handle led_handle; 5731 5732 #define TPACPI_LED_NUMLEDS 16 5733 static struct tpacpi_led_classdev *tpacpi_leds; 5734 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5735 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5736 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5737 "tpacpi::power", 5738 "tpacpi:orange:batt", 5739 "tpacpi:green:batt", 5740 "tpacpi::dock_active", 5741 "tpacpi::bay_active", 5742 "tpacpi::dock_batt", 5743 "tpacpi::unknown_led", 5744 "tpacpi::standby", 5745 "tpacpi::dock_status1", 5746 "tpacpi::dock_status2", 5747 "tpacpi::lid_logo_dot", 5748 "tpacpi::unknown_led3", 5749 "tpacpi::thinkvantage", 5750 }; 5751 #define TPACPI_SAFE_LEDS 0x1481U 5752 5753 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5754 { 5755 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5756 return false; 5757 #else 5758 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5759 #endif 5760 } 5761 5762 static int led_get_status(const unsigned int led) 5763 { 5764 int status; 5765 enum led_status_t led_s; 5766 5767 switch (led_supported) { 5768 case TPACPI_LED_570: 5769 if (!acpi_evalf(ec_handle, 5770 &status, "GLED", "dd", 1 << led)) 5771 return -EIO; 5772 led_s = (status == 0) ? 5773 TPACPI_LED_OFF : 5774 ((status == 1) ? 5775 TPACPI_LED_ON : 5776 TPACPI_LED_BLINK); 5777 tpacpi_led_state_cache[led] = led_s; 5778 return led_s; 5779 default: 5780 return -ENXIO; 5781 } 5782 5783 /* not reached */ 5784 } 5785 5786 static int led_set_status(const unsigned int led, 5787 const enum led_status_t ledstatus) 5788 { 5789 /* off, on, blink. Index is led_status_t */ 5790 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5791 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5792 5793 int rc = 0; 5794 5795 switch (led_supported) { 5796 case TPACPI_LED_570: 5797 /* 570 */ 5798 if (unlikely(led > 7)) 5799 return -EINVAL; 5800 if (unlikely(tpacpi_is_led_restricted(led))) 5801 return -EPERM; 5802 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5803 (1 << led), led_sled_arg1[ledstatus])) 5804 return -EIO; 5805 break; 5806 case TPACPI_LED_OLD: 5807 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5808 if (unlikely(led > 7)) 5809 return -EINVAL; 5810 if (unlikely(tpacpi_is_led_restricted(led))) 5811 return -EPERM; 5812 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5813 if (rc >= 0) 5814 rc = ec_write(TPACPI_LED_EC_HLBL, 5815 (ledstatus == TPACPI_LED_BLINK) << led); 5816 if (rc >= 0) 5817 rc = ec_write(TPACPI_LED_EC_HLCL, 5818 (ledstatus != TPACPI_LED_OFF) << led); 5819 break; 5820 case TPACPI_LED_NEW: 5821 /* all others */ 5822 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5823 return -EINVAL; 5824 if (unlikely(tpacpi_is_led_restricted(led))) 5825 return -EPERM; 5826 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5827 led, led_led_arg1[ledstatus])) 5828 return -EIO; 5829 break; 5830 default: 5831 return -ENXIO; 5832 } 5833 5834 if (!rc) 5835 tpacpi_led_state_cache[led] = ledstatus; 5836 5837 return rc; 5838 } 5839 5840 static int led_sysfs_set(struct led_classdev *led_cdev, 5841 enum led_brightness brightness) 5842 { 5843 struct tpacpi_led_classdev *data = container_of(led_cdev, 5844 struct tpacpi_led_classdev, led_classdev); 5845 enum led_status_t new_state; 5846 5847 if (brightness == LED_OFF) 5848 new_state = TPACPI_LED_OFF; 5849 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5850 new_state = TPACPI_LED_ON; 5851 else 5852 new_state = TPACPI_LED_BLINK; 5853 5854 return led_set_status(data->led, new_state); 5855 } 5856 5857 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5858 unsigned long *delay_on, unsigned long *delay_off) 5859 { 5860 struct tpacpi_led_classdev *data = container_of(led_cdev, 5861 struct tpacpi_led_classdev, led_classdev); 5862 5863 /* Can we choose the flash rate? */ 5864 if (*delay_on == 0 && *delay_off == 0) { 5865 /* yes. set them to the hardware blink rate (1 Hz) */ 5866 *delay_on = 500; /* ms */ 5867 *delay_off = 500; /* ms */ 5868 } else if ((*delay_on != 500) || (*delay_off != 500)) 5869 return -EINVAL; 5870 5871 return led_set_status(data->led, TPACPI_LED_BLINK); 5872 } 5873 5874 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5875 { 5876 int rc; 5877 5878 struct tpacpi_led_classdev *data = container_of(led_cdev, 5879 struct tpacpi_led_classdev, led_classdev); 5880 5881 rc = led_get_status(data->led); 5882 5883 if (rc == TPACPI_LED_OFF || rc < 0) 5884 rc = LED_OFF; /* no error handling in led class :( */ 5885 else 5886 rc = LED_FULL; 5887 5888 return rc; 5889 } 5890 5891 static void led_exit(void) 5892 { 5893 unsigned int i; 5894 5895 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5896 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5897 5898 kfree(tpacpi_leds); 5899 } 5900 5901 static int __init tpacpi_init_led(unsigned int led) 5902 { 5903 /* LEDs with no name don't get registered */ 5904 if (!tpacpi_led_names[led]) 5905 return 0; 5906 5907 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5908 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5909 if (led_supported == TPACPI_LED_570) 5910 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5911 5912 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5913 tpacpi_leds[led].led = led; 5914 5915 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5916 } 5917 5918 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5919 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5920 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5921 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5922 5923 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5924 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5925 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5926 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5927 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5928 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5929 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5930 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5931 5932 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5933 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5934 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5935 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5936 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5937 5938 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5939 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5940 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5941 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5942 5943 /* (1) - may have excess leds enabled on MSB */ 5944 5945 /* Defaults (order matters, keep last, don't reorder!) */ 5946 { /* Lenovo */ 5947 .vendor = PCI_VENDOR_ID_LENOVO, 5948 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5949 .quirks = 0x1fffU, 5950 }, 5951 { /* IBM ThinkPads with no EC version string */ 5952 .vendor = PCI_VENDOR_ID_IBM, 5953 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 5954 .quirks = 0x00ffU, 5955 }, 5956 { /* IBM ThinkPads with EC version string */ 5957 .vendor = PCI_VENDOR_ID_IBM, 5958 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5959 .quirks = 0x00bfU, 5960 }, 5961 }; 5962 5963 static enum led_access_mode __init led_init_detect_mode(void) 5964 { 5965 acpi_status status; 5966 5967 if (tpacpi_is_ibm()) { 5968 /* 570 */ 5969 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 5970 if (ACPI_SUCCESS(status)) 5971 return TPACPI_LED_570; 5972 5973 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5974 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 5975 if (ACPI_SUCCESS(status)) 5976 return TPACPI_LED_OLD; 5977 } 5978 5979 /* most others */ 5980 status = acpi_get_handle(ec_handle, "LED", &led_handle); 5981 if (ACPI_SUCCESS(status)) 5982 return TPACPI_LED_NEW; 5983 5984 /* R30, R31, and unknown firmwares */ 5985 led_handle = NULL; 5986 return TPACPI_LED_NONE; 5987 } 5988 5989 static int __init led_init(struct ibm_init_struct *iibm) 5990 { 5991 unsigned int i; 5992 int rc; 5993 unsigned long useful_leds; 5994 5995 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 5996 5997 led_supported = led_init_detect_mode(); 5998 5999 if (led_supported != TPACPI_LED_NONE) { 6000 useful_leds = tpacpi_check_quirks(led_useful_qtable, 6001 ARRAY_SIZE(led_useful_qtable)); 6002 6003 if (!useful_leds) { 6004 led_handle = NULL; 6005 led_supported = TPACPI_LED_NONE; 6006 } 6007 } 6008 6009 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 6010 str_supported(led_supported), led_supported); 6011 6012 if (led_supported == TPACPI_LED_NONE) 6013 return 1; 6014 6015 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), 6016 GFP_KERNEL); 6017 if (!tpacpi_leds) { 6018 pr_err("Out of memory for LED data\n"); 6019 return -ENOMEM; 6020 } 6021 6022 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 6023 tpacpi_leds[i].led = -1; 6024 6025 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 6026 rc = tpacpi_init_led(i); 6027 if (rc < 0) { 6028 led_exit(); 6029 return rc; 6030 } 6031 } 6032 } 6033 6034 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 6035 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 6036 #endif 6037 return 0; 6038 } 6039 6040 #define str_led_status(s) \ 6041 ((s) == TPACPI_LED_OFF ? "off" : \ 6042 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 6043 6044 static int led_read(struct seq_file *m) 6045 { 6046 if (!led_supported) { 6047 seq_printf(m, "status:\t\tnot supported\n"); 6048 return 0; 6049 } 6050 seq_printf(m, "status:\t\tsupported\n"); 6051 6052 if (led_supported == TPACPI_LED_570) { 6053 /* 570 */ 6054 int i, status; 6055 for (i = 0; i < 8; i++) { 6056 status = led_get_status(i); 6057 if (status < 0) 6058 return -EIO; 6059 seq_printf(m, "%d:\t\t%s\n", 6060 i, str_led_status(status)); 6061 } 6062 } 6063 6064 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 6065 6066 return 0; 6067 } 6068 6069 static int led_write(char *buf) 6070 { 6071 char *cmd; 6072 int led, rc; 6073 enum led_status_t s; 6074 6075 if (!led_supported) 6076 return -ENODEV; 6077 6078 while ((cmd = strsep(&buf, ","))) { 6079 if (sscanf(cmd, "%d", &led) != 1) 6080 return -EINVAL; 6081 6082 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 6083 return -ENODEV; 6084 6085 if (tpacpi_leds[led].led < 0) 6086 return -ENODEV; 6087 6088 if (strstr(cmd, "off")) { 6089 s = TPACPI_LED_OFF; 6090 } else if (strstr(cmd, "on")) { 6091 s = TPACPI_LED_ON; 6092 } else if (strstr(cmd, "blink")) { 6093 s = TPACPI_LED_BLINK; 6094 } else { 6095 return -EINVAL; 6096 } 6097 6098 rc = led_set_status(led, s); 6099 if (rc < 0) 6100 return rc; 6101 } 6102 6103 return 0; 6104 } 6105 6106 static struct ibm_struct led_driver_data = { 6107 .name = "led", 6108 .read = led_read, 6109 .write = led_write, 6110 .exit = led_exit, 6111 }; 6112 6113 /************************************************************************* 6114 * Beep subdriver 6115 */ 6116 6117 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6118 6119 #define TPACPI_BEEP_Q1 0x0001 6120 6121 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6122 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6123 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6124 }; 6125 6126 static int __init beep_init(struct ibm_init_struct *iibm) 6127 { 6128 unsigned long quirks; 6129 6130 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6131 6132 TPACPI_ACPIHANDLE_INIT(beep); 6133 6134 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6135 str_supported(beep_handle != NULL)); 6136 6137 quirks = tpacpi_check_quirks(beep_quirk_table, 6138 ARRAY_SIZE(beep_quirk_table)); 6139 6140 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6141 6142 return (beep_handle) ? 0 : 1; 6143 } 6144 6145 static int beep_read(struct seq_file *m) 6146 { 6147 if (!beep_handle) 6148 seq_printf(m, "status:\t\tnot supported\n"); 6149 else { 6150 seq_printf(m, "status:\t\tsupported\n"); 6151 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6152 } 6153 6154 return 0; 6155 } 6156 6157 static int beep_write(char *buf) 6158 { 6159 char *cmd; 6160 int beep_cmd; 6161 6162 if (!beep_handle) 6163 return -ENODEV; 6164 6165 while ((cmd = strsep(&buf, ","))) { 6166 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6167 beep_cmd >= 0 && beep_cmd <= 17) { 6168 /* beep_cmd set */ 6169 } else 6170 return -EINVAL; 6171 if (tp_features.beep_needs_two_args) { 6172 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6173 beep_cmd, 0)) 6174 return -EIO; 6175 } else { 6176 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6177 beep_cmd)) 6178 return -EIO; 6179 } 6180 } 6181 6182 return 0; 6183 } 6184 6185 static struct ibm_struct beep_driver_data = { 6186 .name = "beep", 6187 .read = beep_read, 6188 .write = beep_write, 6189 }; 6190 6191 /************************************************************************* 6192 * Thermal subdriver 6193 */ 6194 6195 enum thermal_access_mode { 6196 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6197 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6198 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6199 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6200 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6201 }; 6202 6203 enum { /* TPACPI_THERMAL_TPEC_* */ 6204 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6205 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6206 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */ 6207 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6208 6209 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6210 }; 6211 6212 6213 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6214 struct ibm_thermal_sensors_struct { 6215 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6216 }; 6217 6218 static enum thermal_access_mode thermal_read_mode; 6219 static const struct attribute_group *thermal_attr_group; 6220 static bool thermal_use_labels; 6221 6222 /* idx is zero-based */ 6223 static int thermal_get_sensor(int idx, s32 *value) 6224 { 6225 int t; 6226 s8 tmp; 6227 char tmpi[5]; 6228 6229 t = TP_EC_THERMAL_TMP0; 6230 6231 switch (thermal_read_mode) { 6232 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6233 case TPACPI_THERMAL_TPEC_16: 6234 if (idx >= 8 && idx <= 15) { 6235 t = TP_EC_THERMAL_TMP8; 6236 idx -= 8; 6237 } 6238 #endif 6239 fallthrough; 6240 case TPACPI_THERMAL_TPEC_8: 6241 if (idx <= 7) { 6242 if (!acpi_ec_read(t + idx, &tmp)) 6243 return -EIO; 6244 *value = tmp * 1000; 6245 return 0; 6246 } 6247 break; 6248 6249 case TPACPI_THERMAL_ACPI_UPDT: 6250 if (idx <= 7) { 6251 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6252 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6253 return -EIO; 6254 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6255 return -EIO; 6256 *value = (t - 2732) * 100; 6257 return 0; 6258 } 6259 break; 6260 6261 case TPACPI_THERMAL_ACPI_TMP07: 6262 if (idx <= 7) { 6263 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6264 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6265 return -EIO; 6266 if (t > 127 || t < -127) 6267 t = TP_EC_THERMAL_TMP_NA; 6268 *value = t * 1000; 6269 return 0; 6270 } 6271 break; 6272 6273 case TPACPI_THERMAL_NONE: 6274 default: 6275 return -ENOSYS; 6276 } 6277 6278 return -EINVAL; 6279 } 6280 6281 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6282 { 6283 int res, i; 6284 int n; 6285 6286 n = 8; 6287 i = 0; 6288 6289 if (!s) 6290 return -EINVAL; 6291 6292 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6293 n = 16; 6294 6295 for (i = 0 ; i < n; i++) { 6296 res = thermal_get_sensor(i, &s->temp[i]); 6297 if (res) 6298 return res; 6299 } 6300 6301 return n; 6302 } 6303 6304 static void thermal_dump_all_sensors(void) 6305 { 6306 int n, i; 6307 struct ibm_thermal_sensors_struct t; 6308 6309 n = thermal_get_sensors(&t); 6310 if (n <= 0) 6311 return; 6312 6313 pr_notice("temperatures (Celsius):"); 6314 6315 for (i = 0; i < n; i++) { 6316 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6317 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6318 else 6319 pr_cont(" N/A"); 6320 } 6321 6322 pr_cont("\n"); 6323 } 6324 6325 /* sysfs temp##_input -------------------------------------------------- */ 6326 6327 static ssize_t thermal_temp_input_show(struct device *dev, 6328 struct device_attribute *attr, 6329 char *buf) 6330 { 6331 struct sensor_device_attribute *sensor_attr = 6332 to_sensor_dev_attr(attr); 6333 int idx = sensor_attr->index; 6334 s32 value; 6335 int res; 6336 6337 res = thermal_get_sensor(idx, &value); 6338 if (res) 6339 return res; 6340 if (value == TPACPI_THERMAL_SENSOR_NA) 6341 return -ENXIO; 6342 6343 return sysfs_emit(buf, "%d\n", value); 6344 } 6345 6346 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6347 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6348 thermal_temp_input_show, NULL, _idxB) 6349 6350 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6351 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6352 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6353 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6354 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6355 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6356 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6357 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6358 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6359 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6360 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6361 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6362 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6363 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6364 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6365 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6366 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6367 }; 6368 6369 #define THERMAL_ATTRS(X) \ 6370 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6371 6372 static struct attribute *thermal_temp_input_attr[] = { 6373 THERMAL_ATTRS(8), 6374 THERMAL_ATTRS(9), 6375 THERMAL_ATTRS(10), 6376 THERMAL_ATTRS(11), 6377 THERMAL_ATTRS(12), 6378 THERMAL_ATTRS(13), 6379 THERMAL_ATTRS(14), 6380 THERMAL_ATTRS(15), 6381 THERMAL_ATTRS(0), 6382 THERMAL_ATTRS(1), 6383 THERMAL_ATTRS(2), 6384 THERMAL_ATTRS(3), 6385 THERMAL_ATTRS(4), 6386 THERMAL_ATTRS(5), 6387 THERMAL_ATTRS(6), 6388 THERMAL_ATTRS(7), 6389 NULL 6390 }; 6391 6392 static const struct attribute_group thermal_temp_input16_group = { 6393 .attrs = thermal_temp_input_attr 6394 }; 6395 6396 static const struct attribute_group thermal_temp_input8_group = { 6397 .attrs = &thermal_temp_input_attr[8] 6398 }; 6399 6400 #undef THERMAL_SENSOR_ATTR_TEMP 6401 #undef THERMAL_ATTRS 6402 6403 static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6404 { 6405 return sysfs_emit(buf, "CPU\n"); 6406 } 6407 static DEVICE_ATTR_RO(temp1_label); 6408 6409 static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6410 { 6411 return sysfs_emit(buf, "GPU\n"); 6412 } 6413 static DEVICE_ATTR_RO(temp2_label); 6414 6415 static struct attribute *temp_label_attributes[] = { 6416 &dev_attr_temp1_label.attr, 6417 &dev_attr_temp2_label.attr, 6418 NULL 6419 }; 6420 6421 static const struct attribute_group temp_label_attr_group = { 6422 .attrs = temp_label_attributes, 6423 }; 6424 6425 /* --------------------------------------------------------------------- */ 6426 6427 static int __init thermal_init(struct ibm_init_struct *iibm) 6428 { 6429 u8 t, ta1, ta2, ver = 0; 6430 int i; 6431 int acpi_tmp7; 6432 int res; 6433 6434 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6435 6436 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6437 6438 if (thinkpad_id.ec_model) { 6439 /* 6440 * Direct EC access mode: sensors at registers 6441 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6442 * non-implemented, thermal sensors return 0x80 when 6443 * not available 6444 * The above rule is unfortunately flawed. This has been seen with 6445 * 0xC2 (power supply ID) causing thermal control problems. 6446 * The EC version can be determined by offset 0xEF and at least for 6447 * version 3 the Lenovo firmware team confirmed that registers 0xC0-0xC7 6448 * are not thermal registers. 6449 */ 6450 if (!acpi_ec_read(TP_EC_FUNCREV, &ver)) 6451 pr_warn("Thinkpad ACPI EC unable to access EC version\n"); 6452 6453 ta1 = ta2 = 0; 6454 for (i = 0; i < 8; i++) { 6455 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6456 ta1 |= t; 6457 } else { 6458 ta1 = 0; 6459 break; 6460 } 6461 if (ver < 3) { 6462 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6463 ta2 |= t; 6464 } else { 6465 ta1 = 0; 6466 break; 6467 } 6468 } 6469 } 6470 if (ta1 == 0) { 6471 /* This is sheer paranoia, but we handle it anyway */ 6472 if (acpi_tmp7) { 6473 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6474 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6475 } else { 6476 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6477 thermal_read_mode = TPACPI_THERMAL_NONE; 6478 } 6479 } else { 6480 if (ver >= 3) { 6481 thermal_read_mode = TPACPI_THERMAL_TPEC_8; 6482 thermal_use_labels = true; 6483 } else { 6484 thermal_read_mode = 6485 (ta2 != 0) ? 6486 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6487 } 6488 } 6489 } else if (acpi_tmp7) { 6490 if (tpacpi_is_ibm() && 6491 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6492 /* 600e/x, 770e, 770x */ 6493 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6494 } else { 6495 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6496 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6497 } 6498 } else { 6499 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6500 thermal_read_mode = TPACPI_THERMAL_NONE; 6501 } 6502 6503 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6504 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6505 thermal_read_mode); 6506 6507 switch (thermal_read_mode) { 6508 case TPACPI_THERMAL_TPEC_16: 6509 thermal_attr_group = &thermal_temp_input16_group; 6510 break; 6511 case TPACPI_THERMAL_TPEC_8: 6512 case TPACPI_THERMAL_ACPI_TMP07: 6513 case TPACPI_THERMAL_ACPI_UPDT: 6514 thermal_attr_group = &thermal_temp_input8_group; 6515 break; 6516 case TPACPI_THERMAL_NONE: 6517 default: 6518 return 1; 6519 } 6520 6521 res = sysfs_create_group(&tpacpi_hwmon->kobj, thermal_attr_group); 6522 if (res) 6523 return res; 6524 6525 if (thermal_use_labels) { 6526 res = sysfs_create_group(&tpacpi_hwmon->kobj, &temp_label_attr_group); 6527 if (res) { 6528 sysfs_remove_group(&tpacpi_hwmon->kobj, thermal_attr_group); 6529 return res; 6530 } 6531 } 6532 6533 return 0; 6534 } 6535 6536 static void thermal_exit(void) 6537 { 6538 if (thermal_attr_group) 6539 sysfs_remove_group(&tpacpi_hwmon->kobj, thermal_attr_group); 6540 6541 if (thermal_use_labels) 6542 sysfs_remove_group(&tpacpi_hwmon->kobj, &temp_label_attr_group); 6543 } 6544 6545 static int thermal_read(struct seq_file *m) 6546 { 6547 int n, i; 6548 struct ibm_thermal_sensors_struct t; 6549 6550 n = thermal_get_sensors(&t); 6551 if (unlikely(n < 0)) 6552 return n; 6553 6554 seq_printf(m, "temperatures:\t"); 6555 6556 if (n > 0) { 6557 for (i = 0; i < (n - 1); i++) 6558 seq_printf(m, "%d ", t.temp[i] / 1000); 6559 seq_printf(m, "%d\n", t.temp[i] / 1000); 6560 } else 6561 seq_printf(m, "not supported\n"); 6562 6563 return 0; 6564 } 6565 6566 static struct ibm_struct thermal_driver_data = { 6567 .name = "thermal", 6568 .read = thermal_read, 6569 .exit = thermal_exit, 6570 }; 6571 6572 /************************************************************************* 6573 * Backlight/brightness subdriver 6574 */ 6575 6576 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6577 6578 /* 6579 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6580 * CMOS NVRAM byte 0x5E, bits 0-3. 6581 * 6582 * EC HBRV (0x31) has the following layout 6583 * Bit 7: unknown function 6584 * Bit 6: unknown function 6585 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6586 * Bit 4: must be set to zero to avoid problems 6587 * Bit 3-0: backlight brightness level 6588 * 6589 * brightness_get_raw returns status data in the HBRV layout 6590 * 6591 * WARNING: The X61 has been verified to use HBRV for something else, so 6592 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6593 * testing on the very early *60 Lenovo models... 6594 */ 6595 6596 enum { 6597 TP_EC_BACKLIGHT = 0x31, 6598 6599 /* TP_EC_BACKLIGHT bitmasks */ 6600 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6601 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6602 TP_EC_BACKLIGHT_MAPSW = 0x20, 6603 }; 6604 6605 enum tpacpi_brightness_access_mode { 6606 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6607 TPACPI_BRGHT_MODE_EC, /* EC control */ 6608 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6609 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6610 TPACPI_BRGHT_MODE_MAX 6611 }; 6612 6613 static struct backlight_device *ibm_backlight_device; 6614 6615 static enum tpacpi_brightness_access_mode brightness_mode = 6616 TPACPI_BRGHT_MODE_MAX; 6617 6618 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6619 6620 static struct mutex brightness_mutex; 6621 6622 /* NVRAM brightness access, 6623 * call with brightness_mutex held! */ 6624 static unsigned int tpacpi_brightness_nvram_get(void) 6625 { 6626 u8 lnvram; 6627 6628 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6629 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6630 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6631 lnvram &= bright_maxlvl; 6632 6633 return lnvram; 6634 } 6635 6636 static void tpacpi_brightness_checkpoint_nvram(void) 6637 { 6638 u8 lec = 0; 6639 u8 b_nvram; 6640 6641 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6642 return; 6643 6644 vdbg_printk(TPACPI_DBG_BRGHT, 6645 "trying to checkpoint backlight level to NVRAM...\n"); 6646 6647 if (mutex_lock_killable(&brightness_mutex) < 0) 6648 return; 6649 6650 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6651 goto unlock; 6652 lec &= TP_EC_BACKLIGHT_LVLMSK; 6653 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6654 6655 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6656 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6657 /* NVRAM needs update */ 6658 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6659 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6660 b_nvram |= lec; 6661 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6662 dbg_printk(TPACPI_DBG_BRGHT, 6663 "updated NVRAM backlight level to %u (0x%02x)\n", 6664 (unsigned int) lec, (unsigned int) b_nvram); 6665 } else 6666 vdbg_printk(TPACPI_DBG_BRGHT, 6667 "NVRAM backlight level already is %u (0x%02x)\n", 6668 (unsigned int) lec, (unsigned int) b_nvram); 6669 6670 unlock: 6671 mutex_unlock(&brightness_mutex); 6672 } 6673 6674 6675 /* call with brightness_mutex held! */ 6676 static int tpacpi_brightness_get_raw(int *status) 6677 { 6678 u8 lec = 0; 6679 6680 switch (brightness_mode) { 6681 case TPACPI_BRGHT_MODE_UCMS_STEP: 6682 *status = tpacpi_brightness_nvram_get(); 6683 return 0; 6684 case TPACPI_BRGHT_MODE_EC: 6685 case TPACPI_BRGHT_MODE_ECNVRAM: 6686 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6687 return -EIO; 6688 *status = lec; 6689 return 0; 6690 default: 6691 return -ENXIO; 6692 } 6693 } 6694 6695 /* call with brightness_mutex held! */ 6696 /* do NOT call with illegal backlight level value */ 6697 static int tpacpi_brightness_set_ec(unsigned int value) 6698 { 6699 u8 lec = 0; 6700 6701 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6702 return -EIO; 6703 6704 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6705 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6706 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6707 return -EIO; 6708 6709 return 0; 6710 } 6711 6712 /* call with brightness_mutex held! */ 6713 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6714 { 6715 int cmos_cmd, inc; 6716 unsigned int current_value, i; 6717 6718 current_value = tpacpi_brightness_nvram_get(); 6719 6720 if (value == current_value) 6721 return 0; 6722 6723 cmos_cmd = (value > current_value) ? 6724 TP_CMOS_BRIGHTNESS_UP : 6725 TP_CMOS_BRIGHTNESS_DOWN; 6726 inc = (value > current_value) ? 1 : -1; 6727 6728 for (i = current_value; i != value; i += inc) 6729 if (issue_thinkpad_cmos_command(cmos_cmd)) 6730 return -EIO; 6731 6732 return 0; 6733 } 6734 6735 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6736 static int brightness_set(unsigned int value) 6737 { 6738 int res; 6739 6740 if (value > bright_maxlvl) 6741 return -EINVAL; 6742 6743 vdbg_printk(TPACPI_DBG_BRGHT, 6744 "set backlight level to %d\n", value); 6745 6746 res = mutex_lock_killable(&brightness_mutex); 6747 if (res < 0) 6748 return res; 6749 6750 switch (brightness_mode) { 6751 case TPACPI_BRGHT_MODE_EC: 6752 case TPACPI_BRGHT_MODE_ECNVRAM: 6753 res = tpacpi_brightness_set_ec(value); 6754 break; 6755 case TPACPI_BRGHT_MODE_UCMS_STEP: 6756 res = tpacpi_brightness_set_ucmsstep(value); 6757 break; 6758 default: 6759 res = -ENXIO; 6760 } 6761 6762 mutex_unlock(&brightness_mutex); 6763 return res; 6764 } 6765 6766 /* sysfs backlight class ----------------------------------------------- */ 6767 6768 static int brightness_update_status(struct backlight_device *bd) 6769 { 6770 unsigned int level = 6771 (bd->props.fb_blank == FB_BLANK_UNBLANK && 6772 bd->props.power == FB_BLANK_UNBLANK) ? 6773 bd->props.brightness : 0; 6774 6775 dbg_printk(TPACPI_DBG_BRGHT, 6776 "backlight: attempt to set level to %d\n", 6777 level); 6778 6779 /* it is the backlight class's job (caller) to handle 6780 * EINTR and other errors properly */ 6781 return brightness_set(level); 6782 } 6783 6784 static int brightness_get(struct backlight_device *bd) 6785 { 6786 int status, res; 6787 6788 res = mutex_lock_killable(&brightness_mutex); 6789 if (res < 0) 6790 return 0; 6791 6792 res = tpacpi_brightness_get_raw(&status); 6793 6794 mutex_unlock(&brightness_mutex); 6795 6796 if (res < 0) 6797 return 0; 6798 6799 return status & TP_EC_BACKLIGHT_LVLMSK; 6800 } 6801 6802 static void tpacpi_brightness_notify_change(void) 6803 { 6804 backlight_force_update(ibm_backlight_device, 6805 BACKLIGHT_UPDATE_HOTKEY); 6806 } 6807 6808 static const struct backlight_ops ibm_backlight_data = { 6809 .get_brightness = brightness_get, 6810 .update_status = brightness_update_status, 6811 }; 6812 6813 /* --------------------------------------------------------------------- */ 6814 6815 /* 6816 * Call _BCL method of video device. On some ThinkPads this will 6817 * switch the firmware to the ACPI brightness control mode. 6818 */ 6819 6820 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6821 { 6822 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6823 union acpi_object *obj; 6824 struct acpi_device *device, *child; 6825 int rc; 6826 6827 if (acpi_bus_get_device(handle, &device)) 6828 return 0; 6829 6830 rc = 0; 6831 list_for_each_entry(child, &device->children, node) { 6832 acpi_status status = acpi_evaluate_object(child->handle, "_BCL", 6833 NULL, &buffer); 6834 if (ACPI_FAILURE(status)) { 6835 buffer.length = ACPI_ALLOCATE_BUFFER; 6836 continue; 6837 } 6838 6839 obj = (union acpi_object *)buffer.pointer; 6840 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 6841 pr_err("Unknown _BCL data, please report this to %s\n", 6842 TPACPI_MAIL); 6843 rc = 0; 6844 } else { 6845 rc = obj->package.count; 6846 } 6847 break; 6848 } 6849 6850 kfree(buffer.pointer); 6851 return rc; 6852 } 6853 6854 6855 /* 6856 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6857 */ 6858 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6859 { 6860 acpi_handle video_device; 6861 int bcl_levels = 0; 6862 6863 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6864 if (video_device) 6865 bcl_levels = tpacpi_query_bcl_levels(video_device); 6866 6867 tp_features.bright_acpimode = (bcl_levels > 0); 6868 6869 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6870 } 6871 6872 /* 6873 * These are only useful for models that have only one possibility 6874 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6875 * these quirks. 6876 */ 6877 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6878 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6879 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6880 6881 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6882 /* Models with ATI GPUs known to require ECNVRAM mode */ 6883 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6884 6885 /* Models with ATI GPUs that can use ECNVRAM */ 6886 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6887 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6888 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6889 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6890 6891 /* Models with Intel Extreme Graphics 2 */ 6892 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6893 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6894 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6895 6896 /* Models with Intel GMA900 */ 6897 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6898 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6899 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6900 }; 6901 6902 /* 6903 * Returns < 0 for error, otherwise sets tp_features.bright_* 6904 * and bright_maxlvl. 6905 */ 6906 static void __init tpacpi_detect_brightness_capabilities(void) 6907 { 6908 unsigned int b; 6909 6910 vdbg_printk(TPACPI_DBG_INIT, 6911 "detecting firmware brightness interface capabilities\n"); 6912 6913 /* we could run a quirks check here (same table used by 6914 * brightness_init) if needed */ 6915 6916 /* 6917 * We always attempt to detect acpi support, so as to switch 6918 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6919 * going to publish a backlight interface 6920 */ 6921 b = tpacpi_check_std_acpi_brightness_support(); 6922 switch (b) { 6923 case 16: 6924 bright_maxlvl = 15; 6925 break; 6926 case 8: 6927 case 0: 6928 bright_maxlvl = 7; 6929 break; 6930 default: 6931 tp_features.bright_unkfw = 1; 6932 bright_maxlvl = b - 1; 6933 } 6934 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6935 } 6936 6937 static int __init brightness_init(struct ibm_init_struct *iibm) 6938 { 6939 struct backlight_properties props; 6940 int b; 6941 unsigned long quirks; 6942 6943 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6944 6945 mutex_init(&brightness_mutex); 6946 6947 quirks = tpacpi_check_quirks(brightness_quirk_table, 6948 ARRAY_SIZE(brightness_quirk_table)); 6949 6950 /* tpacpi_detect_brightness_capabilities() must have run already */ 6951 6952 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6953 if (tp_features.bright_unkfw) 6954 return 1; 6955 6956 if (!brightness_enable) { 6957 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6958 "brightness support disabled by module parameter\n"); 6959 return 1; 6960 } 6961 6962 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6963 if (brightness_enable > 1) { 6964 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6965 return 1; 6966 } else if (brightness_enable == 1) { 6967 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6968 return 1; 6969 } 6970 } else if (!tp_features.bright_acpimode) { 6971 pr_notice("ACPI backlight interface not available\n"); 6972 return 1; 6973 } 6974 6975 pr_notice("ACPI native brightness control enabled\n"); 6976 6977 /* 6978 * Check for module parameter bogosity, note that we 6979 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6980 * able to detect "unspecified" 6981 */ 6982 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6983 return -EINVAL; 6984 6985 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 6986 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 6987 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 6988 if (quirks & TPACPI_BRGHT_Q_EC) 6989 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 6990 else 6991 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 6992 6993 dbg_printk(TPACPI_DBG_BRGHT, 6994 "driver auto-selected brightness_mode=%d\n", 6995 brightness_mode); 6996 } 6997 6998 /* Safety */ 6999 if (!tpacpi_is_ibm() && 7000 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 7001 brightness_mode == TPACPI_BRGHT_MODE_EC)) 7002 return -EINVAL; 7003 7004 if (tpacpi_brightness_get_raw(&b) < 0) 7005 return 1; 7006 7007 memset(&props, 0, sizeof(struct backlight_properties)); 7008 props.type = BACKLIGHT_PLATFORM; 7009 props.max_brightness = bright_maxlvl; 7010 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 7011 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 7012 NULL, NULL, 7013 &ibm_backlight_data, 7014 &props); 7015 if (IS_ERR(ibm_backlight_device)) { 7016 int rc = PTR_ERR(ibm_backlight_device); 7017 ibm_backlight_device = NULL; 7018 pr_err("Could not register backlight device\n"); 7019 return rc; 7020 } 7021 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7022 "brightness is supported\n"); 7023 7024 if (quirks & TPACPI_BRGHT_Q_ASK) { 7025 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 7026 brightness_mode); 7027 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 7028 TPACPI_MAIL); 7029 } 7030 7031 /* Added by mistake in early 2007. Probably useless, but it could 7032 * be working around some unknown firmware problem where the value 7033 * read at startup doesn't match the real hardware state... so leave 7034 * it in place just in case */ 7035 backlight_update_status(ibm_backlight_device); 7036 7037 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7038 "brightness: registering brightness hotkeys as change notification\n"); 7039 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7040 | TP_ACPI_HKEY_BRGHTUP_MASK 7041 | TP_ACPI_HKEY_BRGHTDWN_MASK); 7042 return 0; 7043 } 7044 7045 static void brightness_suspend(void) 7046 { 7047 tpacpi_brightness_checkpoint_nvram(); 7048 } 7049 7050 static void brightness_shutdown(void) 7051 { 7052 tpacpi_brightness_checkpoint_nvram(); 7053 } 7054 7055 static void brightness_exit(void) 7056 { 7057 if (ibm_backlight_device) { 7058 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 7059 "calling backlight_device_unregister()\n"); 7060 backlight_device_unregister(ibm_backlight_device); 7061 } 7062 7063 tpacpi_brightness_checkpoint_nvram(); 7064 } 7065 7066 static int brightness_read(struct seq_file *m) 7067 { 7068 int level; 7069 7070 level = brightness_get(NULL); 7071 if (level < 0) { 7072 seq_printf(m, "level:\t\tunreadable\n"); 7073 } else { 7074 seq_printf(m, "level:\t\t%d\n", level); 7075 seq_printf(m, "commands:\tup, down\n"); 7076 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7077 bright_maxlvl); 7078 } 7079 7080 return 0; 7081 } 7082 7083 static int brightness_write(char *buf) 7084 { 7085 int level; 7086 int rc; 7087 char *cmd; 7088 7089 level = brightness_get(NULL); 7090 if (level < 0) 7091 return level; 7092 7093 while ((cmd = strsep(&buf, ","))) { 7094 if (strlencmp(cmd, "up") == 0) { 7095 if (level < bright_maxlvl) 7096 level++; 7097 } else if (strlencmp(cmd, "down") == 0) { 7098 if (level > 0) 7099 level--; 7100 } else if (sscanf(cmd, "level %d", &level) == 1 && 7101 level >= 0 && level <= bright_maxlvl) { 7102 /* new level set */ 7103 } else 7104 return -EINVAL; 7105 } 7106 7107 tpacpi_disclose_usertask("procfs brightness", 7108 "set level to %d\n", level); 7109 7110 /* 7111 * Now we know what the final level should be, so we try to set it. 7112 * Doing it this way makes the syscall restartable in case of EINTR 7113 */ 7114 rc = brightness_set(level); 7115 if (!rc && ibm_backlight_device) 7116 backlight_force_update(ibm_backlight_device, 7117 BACKLIGHT_UPDATE_SYSFS); 7118 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7119 } 7120 7121 static struct ibm_struct brightness_driver_data = { 7122 .name = "brightness", 7123 .read = brightness_read, 7124 .write = brightness_write, 7125 .exit = brightness_exit, 7126 .suspend = brightness_suspend, 7127 .shutdown = brightness_shutdown, 7128 }; 7129 7130 /************************************************************************* 7131 * Volume subdriver 7132 */ 7133 7134 /* 7135 * IBM ThinkPads have a simple volume controller with MUTE gating. 7136 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7137 * 7138 * Since the *61 series (and probably also the later *60 series), Lenovo 7139 * ThinkPads only implement the MUTE gate. 7140 * 7141 * EC register 0x30 7142 * Bit 6: MUTE (1 mutes sound) 7143 * Bit 3-0: Volume 7144 * Other bits should be zero as far as we know. 7145 * 7146 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7147 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7148 * such as bit 7 which is used to detect repeated presses of MUTE, 7149 * and we leave them unchanged. 7150 * 7151 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7152 * in response to user input. Unfortunately, this rarely works well. 7153 * The laptop changes the state of its internal MUTE gate and, on some 7154 * models, sends KEY_MUTE, causing any user code that responds to the 7155 * mute button to get confused. The hardware MUTE gate is also 7156 * unnecessary, since user code can handle the mute button without 7157 * kernel or EC help. 7158 * 7159 * To avoid confusing userspace, we simply disable all EC-based mute 7160 * and volume controls when possible. 7161 */ 7162 7163 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7164 7165 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7166 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7167 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7168 7169 #if SNDRV_CARDS <= 32 7170 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7171 #else 7172 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7173 #endif 7174 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7175 static char *alsa_id = "ThinkPadEC"; 7176 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7177 7178 struct tpacpi_alsa_data { 7179 struct snd_card *card; 7180 struct snd_ctl_elem_id *ctl_mute_id; 7181 struct snd_ctl_elem_id *ctl_vol_id; 7182 }; 7183 7184 static struct snd_card *alsa_card; 7185 7186 enum { 7187 TP_EC_AUDIO = 0x30, 7188 7189 /* TP_EC_AUDIO bits */ 7190 TP_EC_AUDIO_MUTESW = 6, 7191 7192 /* TP_EC_AUDIO bitmasks */ 7193 TP_EC_AUDIO_LVL_MSK = 0x0F, 7194 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7195 7196 /* Maximum volume */ 7197 TP_EC_VOLUME_MAX = 14, 7198 }; 7199 7200 enum tpacpi_volume_access_mode { 7201 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7202 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7203 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7204 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7205 TPACPI_VOL_MODE_MAX 7206 }; 7207 7208 enum tpacpi_volume_capabilities { 7209 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7210 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7211 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7212 TPACPI_VOL_CAP_MAX 7213 }; 7214 7215 enum tpacpi_mute_btn_mode { 7216 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7217 /* We don't know what mode 1 is. */ 7218 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7219 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7220 }; 7221 7222 static enum tpacpi_volume_access_mode volume_mode = 7223 TPACPI_VOL_MODE_MAX; 7224 7225 static enum tpacpi_volume_capabilities volume_capabilities; 7226 static bool volume_control_allowed; 7227 static bool software_mute_requested = true; 7228 static bool software_mute_active; 7229 static int software_mute_orig_mode; 7230 7231 /* 7232 * Used to syncronize writers to TP_EC_AUDIO and 7233 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7234 */ 7235 static struct mutex volume_mutex; 7236 7237 static void tpacpi_volume_checkpoint_nvram(void) 7238 { 7239 u8 lec = 0; 7240 u8 b_nvram; 7241 u8 ec_mask; 7242 7243 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7244 return; 7245 if (!volume_control_allowed) 7246 return; 7247 if (software_mute_active) 7248 return; 7249 7250 vdbg_printk(TPACPI_DBG_MIXER, 7251 "trying to checkpoint mixer state to NVRAM...\n"); 7252 7253 if (tp_features.mixer_no_level_control) 7254 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7255 else 7256 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7257 7258 if (mutex_lock_killable(&volume_mutex) < 0) 7259 return; 7260 7261 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7262 goto unlock; 7263 lec &= ec_mask; 7264 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7265 7266 if (lec != (b_nvram & ec_mask)) { 7267 /* NVRAM needs update */ 7268 b_nvram &= ~ec_mask; 7269 b_nvram |= lec; 7270 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7271 dbg_printk(TPACPI_DBG_MIXER, 7272 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7273 (unsigned int) lec, (unsigned int) b_nvram); 7274 } else { 7275 vdbg_printk(TPACPI_DBG_MIXER, 7276 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7277 (unsigned int) lec, (unsigned int) b_nvram); 7278 } 7279 7280 unlock: 7281 mutex_unlock(&volume_mutex); 7282 } 7283 7284 static int volume_get_status_ec(u8 *status) 7285 { 7286 u8 s; 7287 7288 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7289 return -EIO; 7290 7291 *status = s; 7292 7293 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7294 7295 return 0; 7296 } 7297 7298 static int volume_get_status(u8 *status) 7299 { 7300 return volume_get_status_ec(status); 7301 } 7302 7303 static int volume_set_status_ec(const u8 status) 7304 { 7305 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7306 return -EIO; 7307 7308 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7309 7310 /* 7311 * On X200s, and possibly on others, it can take a while for 7312 * reads to become correct. 7313 */ 7314 msleep(1); 7315 7316 return 0; 7317 } 7318 7319 static int volume_set_status(const u8 status) 7320 { 7321 return volume_set_status_ec(status); 7322 } 7323 7324 /* returns < 0 on error, 0 on no change, 1 on change */ 7325 static int __volume_set_mute_ec(const bool mute) 7326 { 7327 int rc; 7328 u8 s, n; 7329 7330 if (mutex_lock_killable(&volume_mutex) < 0) 7331 return -EINTR; 7332 7333 rc = volume_get_status_ec(&s); 7334 if (rc) 7335 goto unlock; 7336 7337 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7338 s & ~TP_EC_AUDIO_MUTESW_MSK; 7339 7340 if (n != s) { 7341 rc = volume_set_status_ec(n); 7342 if (!rc) 7343 rc = 1; 7344 } 7345 7346 unlock: 7347 mutex_unlock(&volume_mutex); 7348 return rc; 7349 } 7350 7351 static int volume_alsa_set_mute(const bool mute) 7352 { 7353 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7354 (mute) ? "" : "un"); 7355 return __volume_set_mute_ec(mute); 7356 } 7357 7358 static int volume_set_mute(const bool mute) 7359 { 7360 int rc; 7361 7362 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7363 (mute) ? "" : "un"); 7364 7365 rc = __volume_set_mute_ec(mute); 7366 return (rc < 0) ? rc : 0; 7367 } 7368 7369 /* returns < 0 on error, 0 on no change, 1 on change */ 7370 static int __volume_set_volume_ec(const u8 vol) 7371 { 7372 int rc; 7373 u8 s, n; 7374 7375 if (vol > TP_EC_VOLUME_MAX) 7376 return -EINVAL; 7377 7378 if (mutex_lock_killable(&volume_mutex) < 0) 7379 return -EINTR; 7380 7381 rc = volume_get_status_ec(&s); 7382 if (rc) 7383 goto unlock; 7384 7385 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7386 7387 if (n != s) { 7388 rc = volume_set_status_ec(n); 7389 if (!rc) 7390 rc = 1; 7391 } 7392 7393 unlock: 7394 mutex_unlock(&volume_mutex); 7395 return rc; 7396 } 7397 7398 static int volume_set_software_mute(bool startup) 7399 { 7400 int result; 7401 7402 if (!tpacpi_is_lenovo()) 7403 return -ENODEV; 7404 7405 if (startup) { 7406 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7407 "HAUM", "qd")) 7408 return -EIO; 7409 7410 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7411 "Initial HAUM setting was %d\n", 7412 software_mute_orig_mode); 7413 } 7414 7415 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7416 (int)TP_EC_MUTE_BTN_NONE)) 7417 return -EIO; 7418 7419 if (result != TP_EC_MUTE_BTN_NONE) 7420 pr_warn("Unexpected SAUM result %d\n", 7421 result); 7422 7423 /* 7424 * In software mute mode, the standard codec controls take 7425 * precendence, so we unmute the ThinkPad HW switch at 7426 * startup. Just on case there are SAUM-capable ThinkPads 7427 * with level controls, set max HW volume as well. 7428 */ 7429 if (tp_features.mixer_no_level_control) 7430 result = volume_set_mute(false); 7431 else 7432 result = volume_set_status(TP_EC_VOLUME_MAX); 7433 7434 if (result != 0) 7435 pr_warn("Failed to unmute the HW mute switch\n"); 7436 7437 return 0; 7438 } 7439 7440 static void volume_exit_software_mute(void) 7441 { 7442 int r; 7443 7444 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7445 || r != software_mute_orig_mode) 7446 pr_warn("Failed to restore mute mode\n"); 7447 } 7448 7449 static int volume_alsa_set_volume(const u8 vol) 7450 { 7451 dbg_printk(TPACPI_DBG_MIXER, 7452 "ALSA: trying to set volume level to %hu\n", vol); 7453 return __volume_set_volume_ec(vol); 7454 } 7455 7456 static void volume_alsa_notify_change(void) 7457 { 7458 struct tpacpi_alsa_data *d; 7459 7460 if (alsa_card && alsa_card->private_data) { 7461 d = alsa_card->private_data; 7462 if (d->ctl_mute_id) 7463 snd_ctl_notify(alsa_card, 7464 SNDRV_CTL_EVENT_MASK_VALUE, 7465 d->ctl_mute_id); 7466 if (d->ctl_vol_id) 7467 snd_ctl_notify(alsa_card, 7468 SNDRV_CTL_EVENT_MASK_VALUE, 7469 d->ctl_vol_id); 7470 } 7471 } 7472 7473 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7474 struct snd_ctl_elem_info *uinfo) 7475 { 7476 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7477 uinfo->count = 1; 7478 uinfo->value.integer.min = 0; 7479 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7480 return 0; 7481 } 7482 7483 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7484 struct snd_ctl_elem_value *ucontrol) 7485 { 7486 u8 s; 7487 int rc; 7488 7489 rc = volume_get_status(&s); 7490 if (rc < 0) 7491 return rc; 7492 7493 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7494 return 0; 7495 } 7496 7497 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7498 struct snd_ctl_elem_value *ucontrol) 7499 { 7500 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7501 ucontrol->value.integer.value[0]); 7502 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7503 } 7504 7505 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7506 7507 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7508 struct snd_ctl_elem_value *ucontrol) 7509 { 7510 u8 s; 7511 int rc; 7512 7513 rc = volume_get_status(&s); 7514 if (rc < 0) 7515 return rc; 7516 7517 ucontrol->value.integer.value[0] = 7518 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7519 return 0; 7520 } 7521 7522 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7523 struct snd_ctl_elem_value *ucontrol) 7524 { 7525 tpacpi_disclose_usertask("ALSA", "%smute\n", 7526 ucontrol->value.integer.value[0] ? 7527 "un" : ""); 7528 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7529 } 7530 7531 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7532 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7533 .name = "Console Playback Volume", 7534 .index = 0, 7535 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7536 .info = volume_alsa_vol_info, 7537 .get = volume_alsa_vol_get, 7538 }; 7539 7540 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7541 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7542 .name = "Console Playback Switch", 7543 .index = 0, 7544 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7545 .info = volume_alsa_mute_info, 7546 .get = volume_alsa_mute_get, 7547 }; 7548 7549 static void volume_suspend(void) 7550 { 7551 tpacpi_volume_checkpoint_nvram(); 7552 } 7553 7554 static void volume_resume(void) 7555 { 7556 if (software_mute_active) { 7557 if (volume_set_software_mute(false) < 0) 7558 pr_warn("Failed to restore software mute\n"); 7559 } else { 7560 volume_alsa_notify_change(); 7561 } 7562 } 7563 7564 static void volume_shutdown(void) 7565 { 7566 tpacpi_volume_checkpoint_nvram(); 7567 } 7568 7569 static void volume_exit(void) 7570 { 7571 if (alsa_card) { 7572 snd_card_free(alsa_card); 7573 alsa_card = NULL; 7574 } 7575 7576 tpacpi_volume_checkpoint_nvram(); 7577 7578 if (software_mute_active) 7579 volume_exit_software_mute(); 7580 } 7581 7582 static int __init volume_create_alsa_mixer(void) 7583 { 7584 struct snd_card *card; 7585 struct tpacpi_alsa_data *data; 7586 struct snd_kcontrol *ctl_vol; 7587 struct snd_kcontrol *ctl_mute; 7588 int rc; 7589 7590 rc = snd_card_new(&tpacpi_pdev->dev, 7591 alsa_index, alsa_id, THIS_MODULE, 7592 sizeof(struct tpacpi_alsa_data), &card); 7593 if (rc < 0 || !card) { 7594 pr_err("Failed to create ALSA card structures: %d\n", rc); 7595 return 1; 7596 } 7597 7598 BUG_ON(!card->private_data); 7599 data = card->private_data; 7600 data->card = card; 7601 7602 strlcpy(card->driver, TPACPI_ALSA_DRVNAME, 7603 sizeof(card->driver)); 7604 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7605 sizeof(card->shortname)); 7606 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7607 (thinkpad_id.ec_version_str) ? 7608 thinkpad_id.ec_version_str : "(unknown)"); 7609 snprintf(card->longname, sizeof(card->longname), 7610 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7611 (thinkpad_id.ec_version_str) ? 7612 thinkpad_id.ec_version_str : "unknown"); 7613 7614 if (volume_control_allowed) { 7615 volume_alsa_control_vol.put = volume_alsa_vol_put; 7616 volume_alsa_control_vol.access = 7617 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7618 7619 volume_alsa_control_mute.put = volume_alsa_mute_put; 7620 volume_alsa_control_mute.access = 7621 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7622 } 7623 7624 if (!tp_features.mixer_no_level_control) { 7625 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7626 rc = snd_ctl_add(card, ctl_vol); 7627 if (rc < 0) { 7628 pr_err("Failed to create ALSA volume control: %d\n", 7629 rc); 7630 goto err_exit; 7631 } 7632 data->ctl_vol_id = &ctl_vol->id; 7633 } 7634 7635 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7636 rc = snd_ctl_add(card, ctl_mute); 7637 if (rc < 0) { 7638 pr_err("Failed to create ALSA mute control: %d\n", rc); 7639 goto err_exit; 7640 } 7641 data->ctl_mute_id = &ctl_mute->id; 7642 7643 rc = snd_card_register(card); 7644 if (rc < 0) { 7645 pr_err("Failed to register ALSA card: %d\n", rc); 7646 goto err_exit; 7647 } 7648 7649 alsa_card = card; 7650 return 0; 7651 7652 err_exit: 7653 snd_card_free(card); 7654 return 1; 7655 } 7656 7657 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7658 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7659 7660 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7661 /* Whitelist volume level on all IBM by default */ 7662 { .vendor = PCI_VENDOR_ID_IBM, 7663 .bios = TPACPI_MATCH_ANY, 7664 .ec = TPACPI_MATCH_ANY, 7665 .quirks = TPACPI_VOL_Q_LEVEL }, 7666 7667 /* Lenovo models with volume control (needs confirmation) */ 7668 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7669 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7670 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7671 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7672 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7673 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7674 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7675 7676 /* Whitelist mute-only on all Lenovo by default */ 7677 { .vendor = PCI_VENDOR_ID_LENOVO, 7678 .bios = TPACPI_MATCH_ANY, 7679 .ec = TPACPI_MATCH_ANY, 7680 .quirks = TPACPI_VOL_Q_MUTEONLY } 7681 }; 7682 7683 static int __init volume_init(struct ibm_init_struct *iibm) 7684 { 7685 unsigned long quirks; 7686 int rc; 7687 7688 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7689 7690 mutex_init(&volume_mutex); 7691 7692 /* 7693 * Check for module parameter bogosity, note that we 7694 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7695 * able to detect "unspecified" 7696 */ 7697 if (volume_mode > TPACPI_VOL_MODE_MAX) 7698 return -EINVAL; 7699 7700 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7701 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7702 TPACPI_MAIL); 7703 return 1; 7704 } 7705 7706 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7707 return -EINVAL; 7708 7709 /* 7710 * The ALSA mixer is our primary interface. 7711 * When disabled, don't install the subdriver at all 7712 */ 7713 if (!alsa_enable) { 7714 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7715 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7716 return 1; 7717 } 7718 7719 quirks = tpacpi_check_quirks(volume_quirk_table, 7720 ARRAY_SIZE(volume_quirk_table)); 7721 7722 switch (volume_capabilities) { 7723 case TPACPI_VOL_CAP_AUTO: 7724 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7725 tp_features.mixer_no_level_control = 1; 7726 else if (quirks & TPACPI_VOL_Q_LEVEL) 7727 tp_features.mixer_no_level_control = 0; 7728 else 7729 return 1; /* no mixer */ 7730 break; 7731 case TPACPI_VOL_CAP_VOLMUTE: 7732 tp_features.mixer_no_level_control = 0; 7733 break; 7734 case TPACPI_VOL_CAP_MUTEONLY: 7735 tp_features.mixer_no_level_control = 1; 7736 break; 7737 default: 7738 return 1; 7739 } 7740 7741 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7742 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7743 "using user-supplied volume_capabilities=%d\n", 7744 volume_capabilities); 7745 7746 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7747 volume_mode == TPACPI_VOL_MODE_MAX) { 7748 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7749 7750 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7751 "driver auto-selected volume_mode=%d\n", 7752 volume_mode); 7753 } else { 7754 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7755 "using user-supplied volume_mode=%d\n", 7756 volume_mode); 7757 } 7758 7759 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7760 "mute is supported, volume control is %s\n", 7761 str_supported(!tp_features.mixer_no_level_control)); 7762 7763 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7764 software_mute_active = true; 7765 } else { 7766 rc = volume_create_alsa_mixer(); 7767 if (rc) { 7768 pr_err("Could not create the ALSA mixer interface\n"); 7769 return rc; 7770 } 7771 7772 pr_info("Console audio control enabled, mode: %s\n", 7773 (volume_control_allowed) ? 7774 "override (read/write)" : 7775 "monitor (read only)"); 7776 } 7777 7778 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7779 "registering volume hotkeys as change notification\n"); 7780 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7781 | TP_ACPI_HKEY_VOLUP_MASK 7782 | TP_ACPI_HKEY_VOLDWN_MASK 7783 | TP_ACPI_HKEY_MUTE_MASK); 7784 7785 return 0; 7786 } 7787 7788 static int volume_read(struct seq_file *m) 7789 { 7790 u8 status; 7791 7792 if (volume_get_status(&status) < 0) { 7793 seq_printf(m, "level:\t\tunreadable\n"); 7794 } else { 7795 if (tp_features.mixer_no_level_control) 7796 seq_printf(m, "level:\t\tunsupported\n"); 7797 else 7798 seq_printf(m, "level:\t\t%d\n", 7799 status & TP_EC_AUDIO_LVL_MSK); 7800 7801 seq_printf(m, "mute:\t\t%s\n", 7802 onoff(status, TP_EC_AUDIO_MUTESW)); 7803 7804 if (volume_control_allowed) { 7805 seq_printf(m, "commands:\tunmute, mute\n"); 7806 if (!tp_features.mixer_no_level_control) { 7807 seq_printf(m, "commands:\tup, down\n"); 7808 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7809 TP_EC_VOLUME_MAX); 7810 } 7811 } 7812 } 7813 7814 return 0; 7815 } 7816 7817 static int volume_write(char *buf) 7818 { 7819 u8 s; 7820 u8 new_level, new_mute; 7821 int l; 7822 char *cmd; 7823 int rc; 7824 7825 /* 7826 * We do allow volume control at driver startup, so that the 7827 * user can set initial state through the volume=... parameter hack. 7828 */ 7829 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7830 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7831 tp_warned.volume_ctrl_forbidden = 1; 7832 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7833 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7834 } 7835 return -EPERM; 7836 } 7837 7838 rc = volume_get_status(&s); 7839 if (rc < 0) 7840 return rc; 7841 7842 new_level = s & TP_EC_AUDIO_LVL_MSK; 7843 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7844 7845 while ((cmd = strsep(&buf, ","))) { 7846 if (!tp_features.mixer_no_level_control) { 7847 if (strlencmp(cmd, "up") == 0) { 7848 if (new_mute) 7849 new_mute = 0; 7850 else if (new_level < TP_EC_VOLUME_MAX) 7851 new_level++; 7852 continue; 7853 } else if (strlencmp(cmd, "down") == 0) { 7854 if (new_mute) 7855 new_mute = 0; 7856 else if (new_level > 0) 7857 new_level--; 7858 continue; 7859 } else if (sscanf(cmd, "level %u", &l) == 1 && 7860 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7861 new_level = l; 7862 continue; 7863 } 7864 } 7865 if (strlencmp(cmd, "mute") == 0) 7866 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7867 else if (strlencmp(cmd, "unmute") == 0) 7868 new_mute = 0; 7869 else 7870 return -EINVAL; 7871 } 7872 7873 if (tp_features.mixer_no_level_control) { 7874 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7875 new_mute ? "" : "un"); 7876 rc = volume_set_mute(!!new_mute); 7877 } else { 7878 tpacpi_disclose_usertask("procfs volume", 7879 "%smute and set level to %d\n", 7880 new_mute ? "" : "un", new_level); 7881 rc = volume_set_status(new_mute | new_level); 7882 } 7883 volume_alsa_notify_change(); 7884 7885 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7886 } 7887 7888 static struct ibm_struct volume_driver_data = { 7889 .name = "volume", 7890 .read = volume_read, 7891 .write = volume_write, 7892 .exit = volume_exit, 7893 .suspend = volume_suspend, 7894 .resume = volume_resume, 7895 .shutdown = volume_shutdown, 7896 }; 7897 7898 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7899 7900 #define alsa_card NULL 7901 7902 static inline void volume_alsa_notify_change(void) 7903 { 7904 } 7905 7906 static int __init volume_init(struct ibm_init_struct *iibm) 7907 { 7908 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7909 7910 return 1; 7911 } 7912 7913 static struct ibm_struct volume_driver_data = { 7914 .name = "volume", 7915 }; 7916 7917 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7918 7919 /************************************************************************* 7920 * Fan subdriver 7921 */ 7922 7923 /* 7924 * FAN ACCESS MODES 7925 * 7926 * TPACPI_FAN_RD_ACPI_GFAN: 7927 * ACPI GFAN method: returns fan level 7928 * 7929 * see TPACPI_FAN_WR_ACPI_SFAN 7930 * EC 0x2f (HFSP) not available if GFAN exists 7931 * 7932 * TPACPI_FAN_WR_ACPI_SFAN: 7933 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7934 * 7935 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7936 * it for writing. 7937 * 7938 * TPACPI_FAN_WR_TPEC: 7939 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7940 * Supported on almost all ThinkPads 7941 * 7942 * Fan speed changes of any sort (including those caused by the 7943 * disengaged mode) are usually done slowly by the firmware as the 7944 * maximum amount of fan duty cycle change per second seems to be 7945 * limited. 7946 * 7947 * Reading is not available if GFAN exists. 7948 * Writing is not available if SFAN exists. 7949 * 7950 * Bits 7951 * 7 automatic mode engaged; 7952 * (default operation mode of the ThinkPad) 7953 * fan level is ignored in this mode. 7954 * 6 full speed mode (takes precedence over bit 7); 7955 * not available on all thinkpads. May disable 7956 * the tachometer while the fan controller ramps up 7957 * the speed (which can take up to a few *minutes*). 7958 * Speeds up fan to 100% duty-cycle, which is far above 7959 * the standard RPM levels. It is not impossible that 7960 * it could cause hardware damage. 7961 * 5-3 unused in some models. Extra bits for fan level 7962 * in others, but still useless as all values above 7963 * 7 map to the same speed as level 7 in these models. 7964 * 2-0 fan level (0..7 usually) 7965 * 0x00 = stop 7966 * 0x07 = max (set when temperatures critical) 7967 * Some ThinkPads may have other levels, see 7968 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7969 * 7970 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7971 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7972 * does so, its initial value is meaningless (0x07). 7973 * 7974 * For firmware bugs, refer to: 7975 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7976 * 7977 * ---- 7978 * 7979 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7980 * Main fan tachometer reading (in RPM) 7981 * 7982 * This register is present on all ThinkPads with a new-style EC, and 7983 * it is known not to be present on the A21m/e, and T22, as there is 7984 * something else in offset 0x84 according to the ACPI DSDT. Other 7985 * ThinkPads from this same time period (and earlier) probably lack the 7986 * tachometer as well. 7987 * 7988 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 7989 * was never fixed by IBM to report the EC firmware version string 7990 * probably support the tachometer (like the early X models), so 7991 * detecting it is quite hard. We need more data to know for sure. 7992 * 7993 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 7994 * might result. 7995 * 7996 * FIRMWARE BUG: may go stale while the EC is switching to full speed 7997 * mode. 7998 * 7999 * For firmware bugs, refer to: 8000 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 8001 * 8002 * ---- 8003 * 8004 * ThinkPad EC register 0x31 bit 0 (only on select models) 8005 * 8006 * When bit 0 of EC register 0x31 is zero, the tachometer registers 8007 * show the speed of the main fan. When bit 0 of EC register 0x31 8008 * is one, the tachometer registers show the speed of the auxiliary 8009 * fan. 8010 * 8011 * Fan control seems to affect both fans, regardless of the state 8012 * of this bit. 8013 * 8014 * So far, only the firmware for the X60/X61 non-tablet versions 8015 * seem to support this (firmware TP-7M). 8016 * 8017 * TPACPI_FAN_WR_ACPI_FANS: 8018 * ThinkPad X31, X40, X41. Not available in the X60. 8019 * 8020 * FANS ACPI handle: takes three arguments: low speed, medium speed, 8021 * high speed. ACPI DSDT seems to map these three speeds to levels 8022 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 8023 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 8024 * 8025 * The speeds are stored on handles 8026 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 8027 * 8028 * There are three default speed sets, accessible as handles: 8029 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 8030 * 8031 * ACPI DSDT switches which set is in use depending on various 8032 * factors. 8033 * 8034 * TPACPI_FAN_WR_TPEC is also available and should be used to 8035 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 8036 * but the ACPI tables just mention level 7. 8037 */ 8038 8039 enum { /* Fan control constants */ 8040 fan_status_offset = 0x2f, /* EC register 0x2f */ 8041 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 8042 * 0x84 must be read before 0x85 */ 8043 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 8044 bit 0 selects which fan is active */ 8045 8046 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 8047 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 8048 8049 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 8050 }; 8051 8052 enum fan_status_access_mode { 8053 TPACPI_FAN_NONE = 0, /* No fan status or control */ 8054 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 8055 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 8056 }; 8057 8058 enum fan_control_access_mode { 8059 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 8060 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 8061 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 8062 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 8063 }; 8064 8065 enum fan_control_commands { 8066 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 8067 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 8068 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 8069 * and also watchdog cmd */ 8070 }; 8071 8072 static bool fan_control_allowed; 8073 8074 static enum fan_status_access_mode fan_status_access_mode; 8075 static enum fan_control_access_mode fan_control_access_mode; 8076 static enum fan_control_commands fan_control_commands; 8077 8078 static u8 fan_control_initial_status; 8079 static u8 fan_control_desired_level; 8080 static u8 fan_control_resume_level; 8081 static int fan_watchdog_maxinterval; 8082 8083 static struct mutex fan_mutex; 8084 8085 static void fan_watchdog_fire(struct work_struct *ignored); 8086 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 8087 8088 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 8089 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 8090 "\\FSPD", /* 600e/x, 770e, 770x */ 8091 ); /* all others */ 8092 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8093 "JFNS", /* 770x-JL */ 8094 ); /* all others */ 8095 8096 /* 8097 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8098 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8099 * be in auto mode (0x80). 8100 * 8101 * This is corrected by any write to HFSP either by the driver, or 8102 * by the firmware. 8103 * 8104 * We assume 0x07 really means auto mode while this quirk is active, 8105 * as this is far more likely than the ThinkPad being in level 7, 8106 * which is only used by the firmware during thermal emergencies. 8107 * 8108 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8109 * TP-70 (T43, R52), which are known to be buggy. 8110 */ 8111 8112 static void fan_quirk1_setup(void) 8113 { 8114 if (fan_control_initial_status == 0x07) { 8115 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8116 tp_features.fan_ctrl_status_undef = 1; 8117 } 8118 } 8119 8120 static void fan_quirk1_handle(u8 *fan_status) 8121 { 8122 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8123 if (*fan_status != fan_control_initial_status) { 8124 /* something changed the HFSP regisnter since 8125 * driver init time, so it is not undefined 8126 * anymore */ 8127 tp_features.fan_ctrl_status_undef = 0; 8128 } else { 8129 /* Return most likely status. In fact, it 8130 * might be the only possible status */ 8131 *fan_status = TP_EC_FAN_AUTO; 8132 } 8133 } 8134 } 8135 8136 /* Select main fan on X60/X61, NOOP on others */ 8137 static bool fan_select_fan1(void) 8138 { 8139 if (tp_features.second_fan) { 8140 u8 val; 8141 8142 if (ec_read(fan_select_offset, &val) < 0) 8143 return false; 8144 val &= 0xFEU; 8145 if (ec_write(fan_select_offset, val) < 0) 8146 return false; 8147 } 8148 return true; 8149 } 8150 8151 /* Select secondary fan on X60/X61 */ 8152 static bool fan_select_fan2(void) 8153 { 8154 u8 val; 8155 8156 if (!tp_features.second_fan) 8157 return false; 8158 8159 if (ec_read(fan_select_offset, &val) < 0) 8160 return false; 8161 val |= 0x01U; 8162 if (ec_write(fan_select_offset, val) < 0) 8163 return false; 8164 8165 return true; 8166 } 8167 8168 /* 8169 * Call with fan_mutex held 8170 */ 8171 static void fan_update_desired_level(u8 status) 8172 { 8173 if ((status & 8174 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8175 if (status > 7) 8176 fan_control_desired_level = 7; 8177 else 8178 fan_control_desired_level = status; 8179 } 8180 } 8181 8182 static int fan_get_status(u8 *status) 8183 { 8184 u8 s; 8185 8186 /* TODO: 8187 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8188 8189 switch (fan_status_access_mode) { 8190 case TPACPI_FAN_RD_ACPI_GFAN: { 8191 /* 570, 600e/x, 770e, 770x */ 8192 int res; 8193 8194 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8195 return -EIO; 8196 8197 if (likely(status)) 8198 *status = res & 0x07; 8199 8200 break; 8201 } 8202 case TPACPI_FAN_RD_TPEC: 8203 /* all except 570, 600e/x, 770e, 770x */ 8204 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8205 return -EIO; 8206 8207 if (likely(status)) { 8208 *status = s; 8209 fan_quirk1_handle(status); 8210 } 8211 8212 break; 8213 8214 default: 8215 return -ENXIO; 8216 } 8217 8218 return 0; 8219 } 8220 8221 static int fan_get_status_safe(u8 *status) 8222 { 8223 int rc; 8224 u8 s; 8225 8226 if (mutex_lock_killable(&fan_mutex)) 8227 return -ERESTARTSYS; 8228 rc = fan_get_status(&s); 8229 if (!rc) 8230 fan_update_desired_level(s); 8231 mutex_unlock(&fan_mutex); 8232 8233 if (rc) 8234 return rc; 8235 if (status) 8236 *status = s; 8237 8238 return 0; 8239 } 8240 8241 static int fan_get_speed(unsigned int *speed) 8242 { 8243 u8 hi, lo; 8244 8245 switch (fan_status_access_mode) { 8246 case TPACPI_FAN_RD_TPEC: 8247 /* all except 570, 600e/x, 770e, 770x */ 8248 if (unlikely(!fan_select_fan1())) 8249 return -EIO; 8250 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8251 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8252 return -EIO; 8253 8254 if (likely(speed)) 8255 *speed = (hi << 8) | lo; 8256 8257 break; 8258 8259 default: 8260 return -ENXIO; 8261 } 8262 8263 return 0; 8264 } 8265 8266 static int fan2_get_speed(unsigned int *speed) 8267 { 8268 u8 hi, lo; 8269 bool rc; 8270 8271 switch (fan_status_access_mode) { 8272 case TPACPI_FAN_RD_TPEC: 8273 /* all except 570, 600e/x, 770e, 770x */ 8274 if (unlikely(!fan_select_fan2())) 8275 return -EIO; 8276 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8277 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8278 fan_select_fan1(); /* play it safe */ 8279 if (rc) 8280 return -EIO; 8281 8282 if (likely(speed)) 8283 *speed = (hi << 8) | lo; 8284 8285 break; 8286 8287 default: 8288 return -ENXIO; 8289 } 8290 8291 return 0; 8292 } 8293 8294 static int fan_set_level(int level) 8295 { 8296 if (!fan_control_allowed) 8297 return -EPERM; 8298 8299 switch (fan_control_access_mode) { 8300 case TPACPI_FAN_WR_ACPI_SFAN: 8301 if ((level < 0) || (level > 7)) 8302 return -EINVAL; 8303 8304 if (tp_features.second_fan_ctl) { 8305 if (!fan_select_fan2() || 8306 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8307 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8308 tp_features.second_fan_ctl = 0; 8309 } 8310 fan_select_fan1(); 8311 } 8312 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8313 return -EIO; 8314 break; 8315 8316 case TPACPI_FAN_WR_ACPI_FANS: 8317 case TPACPI_FAN_WR_TPEC: 8318 if (!(level & TP_EC_FAN_AUTO) && 8319 !(level & TP_EC_FAN_FULLSPEED) && 8320 ((level < 0) || (level > 7))) 8321 return -EINVAL; 8322 8323 /* safety net should the EC not support AUTO 8324 * or FULLSPEED mode bits and just ignore them */ 8325 if (level & TP_EC_FAN_FULLSPEED) 8326 level |= 7; /* safety min speed 7 */ 8327 else if (level & TP_EC_FAN_AUTO) 8328 level |= 4; /* safety min speed 4 */ 8329 8330 if (tp_features.second_fan_ctl) { 8331 if (!fan_select_fan2() || 8332 !acpi_ec_write(fan_status_offset, level)) { 8333 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8334 tp_features.second_fan_ctl = 0; 8335 } 8336 fan_select_fan1(); 8337 8338 } 8339 if (!acpi_ec_write(fan_status_offset, level)) 8340 return -EIO; 8341 else 8342 tp_features.fan_ctrl_status_undef = 0; 8343 break; 8344 8345 default: 8346 return -ENXIO; 8347 } 8348 8349 vdbg_printk(TPACPI_DBG_FAN, 8350 "fan control: set fan control register to 0x%02x\n", level); 8351 return 0; 8352 } 8353 8354 static int fan_set_level_safe(int level) 8355 { 8356 int rc; 8357 8358 if (!fan_control_allowed) 8359 return -EPERM; 8360 8361 if (mutex_lock_killable(&fan_mutex)) 8362 return -ERESTARTSYS; 8363 8364 if (level == TPACPI_FAN_LAST_LEVEL) 8365 level = fan_control_desired_level; 8366 8367 rc = fan_set_level(level); 8368 if (!rc) 8369 fan_update_desired_level(level); 8370 8371 mutex_unlock(&fan_mutex); 8372 return rc; 8373 } 8374 8375 static int fan_set_enable(void) 8376 { 8377 u8 s; 8378 int rc; 8379 8380 if (!fan_control_allowed) 8381 return -EPERM; 8382 8383 if (mutex_lock_killable(&fan_mutex)) 8384 return -ERESTARTSYS; 8385 8386 switch (fan_control_access_mode) { 8387 case TPACPI_FAN_WR_ACPI_FANS: 8388 case TPACPI_FAN_WR_TPEC: 8389 rc = fan_get_status(&s); 8390 if (rc < 0) 8391 break; 8392 8393 /* Don't go out of emergency fan mode */ 8394 if (s != 7) { 8395 s &= 0x07; 8396 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8397 } 8398 8399 if (!acpi_ec_write(fan_status_offset, s)) 8400 rc = -EIO; 8401 else { 8402 tp_features.fan_ctrl_status_undef = 0; 8403 rc = 0; 8404 } 8405 break; 8406 8407 case TPACPI_FAN_WR_ACPI_SFAN: 8408 rc = fan_get_status(&s); 8409 if (rc < 0) 8410 break; 8411 8412 s &= 0x07; 8413 8414 /* Set fan to at least level 4 */ 8415 s |= 4; 8416 8417 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8418 rc = -EIO; 8419 else 8420 rc = 0; 8421 break; 8422 8423 default: 8424 rc = -ENXIO; 8425 } 8426 8427 mutex_unlock(&fan_mutex); 8428 8429 if (!rc) 8430 vdbg_printk(TPACPI_DBG_FAN, 8431 "fan control: set fan control register to 0x%02x\n", 8432 s); 8433 return rc; 8434 } 8435 8436 static int fan_set_disable(void) 8437 { 8438 int rc; 8439 8440 if (!fan_control_allowed) 8441 return -EPERM; 8442 8443 if (mutex_lock_killable(&fan_mutex)) 8444 return -ERESTARTSYS; 8445 8446 rc = 0; 8447 switch (fan_control_access_mode) { 8448 case TPACPI_FAN_WR_ACPI_FANS: 8449 case TPACPI_FAN_WR_TPEC: 8450 if (!acpi_ec_write(fan_status_offset, 0x00)) 8451 rc = -EIO; 8452 else { 8453 fan_control_desired_level = 0; 8454 tp_features.fan_ctrl_status_undef = 0; 8455 } 8456 break; 8457 8458 case TPACPI_FAN_WR_ACPI_SFAN: 8459 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8460 rc = -EIO; 8461 else 8462 fan_control_desired_level = 0; 8463 break; 8464 8465 default: 8466 rc = -ENXIO; 8467 } 8468 8469 if (!rc) 8470 vdbg_printk(TPACPI_DBG_FAN, 8471 "fan control: set fan control register to 0\n"); 8472 8473 mutex_unlock(&fan_mutex); 8474 return rc; 8475 } 8476 8477 static int fan_set_speed(int speed) 8478 { 8479 int rc; 8480 8481 if (!fan_control_allowed) 8482 return -EPERM; 8483 8484 if (mutex_lock_killable(&fan_mutex)) 8485 return -ERESTARTSYS; 8486 8487 rc = 0; 8488 switch (fan_control_access_mode) { 8489 case TPACPI_FAN_WR_ACPI_FANS: 8490 if (speed >= 0 && speed <= 65535) { 8491 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8492 speed, speed, speed)) 8493 rc = -EIO; 8494 } else 8495 rc = -EINVAL; 8496 break; 8497 8498 default: 8499 rc = -ENXIO; 8500 } 8501 8502 mutex_unlock(&fan_mutex); 8503 return rc; 8504 } 8505 8506 static void fan_watchdog_reset(void) 8507 { 8508 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8509 return; 8510 8511 if (fan_watchdog_maxinterval > 0 && 8512 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8513 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8514 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8515 else 8516 cancel_delayed_work(&fan_watchdog_task); 8517 } 8518 8519 static void fan_watchdog_fire(struct work_struct *ignored) 8520 { 8521 int rc; 8522 8523 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8524 return; 8525 8526 pr_notice("fan watchdog: enabling fan\n"); 8527 rc = fan_set_enable(); 8528 if (rc < 0) { 8529 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8530 rc); 8531 /* reschedule for later */ 8532 fan_watchdog_reset(); 8533 } 8534 } 8535 8536 /* 8537 * SYSFS fan layout: hwmon compatible (device) 8538 * 8539 * pwm*_enable: 8540 * 0: "disengaged" mode 8541 * 1: manual mode 8542 * 2: native EC "auto" mode (recommended, hardware default) 8543 * 8544 * pwm*: set speed in manual mode, ignored otherwise. 8545 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8546 * interpolation. 8547 * 8548 * fan*_input: tachometer reading, RPM 8549 * 8550 * 8551 * SYSFS fan layout: extensions 8552 * 8553 * fan_watchdog (driver): 8554 * fan watchdog interval in seconds, 0 disables (default), max 120 8555 */ 8556 8557 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8558 static ssize_t fan_pwm1_enable_show(struct device *dev, 8559 struct device_attribute *attr, 8560 char *buf) 8561 { 8562 int res, mode; 8563 u8 status; 8564 8565 res = fan_get_status_safe(&status); 8566 if (res) 8567 return res; 8568 8569 if (status & TP_EC_FAN_FULLSPEED) { 8570 mode = 0; 8571 } else if (status & TP_EC_FAN_AUTO) { 8572 mode = 2; 8573 } else 8574 mode = 1; 8575 8576 return sysfs_emit(buf, "%d\n", mode); 8577 } 8578 8579 static ssize_t fan_pwm1_enable_store(struct device *dev, 8580 struct device_attribute *attr, 8581 const char *buf, size_t count) 8582 { 8583 unsigned long t; 8584 int res, level; 8585 8586 if (parse_strtoul(buf, 2, &t)) 8587 return -EINVAL; 8588 8589 tpacpi_disclose_usertask("hwmon pwm1_enable", 8590 "set fan mode to %lu\n", t); 8591 8592 switch (t) { 8593 case 0: 8594 level = TP_EC_FAN_FULLSPEED; 8595 break; 8596 case 1: 8597 level = TPACPI_FAN_LAST_LEVEL; 8598 break; 8599 case 2: 8600 level = TP_EC_FAN_AUTO; 8601 break; 8602 case 3: 8603 /* reserved for software-controlled auto mode */ 8604 return -ENOSYS; 8605 default: 8606 return -EINVAL; 8607 } 8608 8609 res = fan_set_level_safe(level); 8610 if (res == -ENXIO) 8611 return -EINVAL; 8612 else if (res < 0) 8613 return res; 8614 8615 fan_watchdog_reset(); 8616 8617 return count; 8618 } 8619 8620 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8621 fan_pwm1_enable_show, fan_pwm1_enable_store); 8622 8623 /* sysfs fan pwm1 ------------------------------------------------------ */ 8624 static ssize_t fan_pwm1_show(struct device *dev, 8625 struct device_attribute *attr, 8626 char *buf) 8627 { 8628 int res; 8629 u8 status; 8630 8631 res = fan_get_status_safe(&status); 8632 if (res) 8633 return res; 8634 8635 if ((status & 8636 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8637 status = fan_control_desired_level; 8638 8639 if (status > 7) 8640 status = 7; 8641 8642 return sysfs_emit(buf, "%u\n", (status * 255) / 7); 8643 } 8644 8645 static ssize_t fan_pwm1_store(struct device *dev, 8646 struct device_attribute *attr, 8647 const char *buf, size_t count) 8648 { 8649 unsigned long s; 8650 int rc; 8651 u8 status, newlevel; 8652 8653 if (parse_strtoul(buf, 255, &s)) 8654 return -EINVAL; 8655 8656 tpacpi_disclose_usertask("hwmon pwm1", 8657 "set fan speed to %lu\n", s); 8658 8659 /* scale down from 0-255 to 0-7 */ 8660 newlevel = (s >> 5) & 0x07; 8661 8662 if (mutex_lock_killable(&fan_mutex)) 8663 return -ERESTARTSYS; 8664 8665 rc = fan_get_status(&status); 8666 if (!rc && (status & 8667 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8668 rc = fan_set_level(newlevel); 8669 if (rc == -ENXIO) 8670 rc = -EINVAL; 8671 else if (!rc) { 8672 fan_update_desired_level(newlevel); 8673 fan_watchdog_reset(); 8674 } 8675 } 8676 8677 mutex_unlock(&fan_mutex); 8678 return (rc) ? rc : count; 8679 } 8680 8681 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8682 8683 /* sysfs fan fan1_input ------------------------------------------------ */ 8684 static ssize_t fan_fan1_input_show(struct device *dev, 8685 struct device_attribute *attr, 8686 char *buf) 8687 { 8688 int res; 8689 unsigned int speed; 8690 8691 res = fan_get_speed(&speed); 8692 if (res < 0) 8693 return res; 8694 8695 return sysfs_emit(buf, "%u\n", speed); 8696 } 8697 8698 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8699 8700 /* sysfs fan fan2_input ------------------------------------------------ */ 8701 static ssize_t fan_fan2_input_show(struct device *dev, 8702 struct device_attribute *attr, 8703 char *buf) 8704 { 8705 int res; 8706 unsigned int speed; 8707 8708 res = fan2_get_speed(&speed); 8709 if (res < 0) 8710 return res; 8711 8712 return sysfs_emit(buf, "%u\n", speed); 8713 } 8714 8715 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8716 8717 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8718 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8719 { 8720 return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval); 8721 } 8722 8723 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8724 size_t count) 8725 { 8726 unsigned long t; 8727 8728 if (parse_strtoul(buf, 120, &t)) 8729 return -EINVAL; 8730 8731 if (!fan_control_allowed) 8732 return -EPERM; 8733 8734 fan_watchdog_maxinterval = t; 8735 fan_watchdog_reset(); 8736 8737 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8738 8739 return count; 8740 } 8741 static DRIVER_ATTR_RW(fan_watchdog); 8742 8743 /* --------------------------------------------------------------------- */ 8744 static struct attribute *fan_attributes[] = { 8745 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr, 8746 &dev_attr_fan1_input.attr, 8747 NULL, /* for fan2_input */ 8748 NULL 8749 }; 8750 8751 static const struct attribute_group fan_attr_group = { 8752 .attrs = fan_attributes, 8753 }; 8754 8755 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ 8756 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8757 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8758 8759 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8760 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8761 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8762 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8763 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8764 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8765 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8766 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8767 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8768 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8769 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8770 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8771 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ 8772 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8773 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8774 TPACPI_Q_LNV3('N', '2', 'V', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (3nd gen) */ 8775 TPACPI_Q_LNV3('N', '4', '0', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (4nd gen) */ 8776 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8777 TPACPI_Q_LNV3('N', '3', '2', TPACPI_FAN_2CTL), /* X1 Carbon (9th gen) */ 8778 }; 8779 8780 static int __init fan_init(struct ibm_init_struct *iibm) 8781 { 8782 int rc; 8783 unsigned long quirks; 8784 8785 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8786 "initializing fan subdriver\n"); 8787 8788 mutex_init(&fan_mutex); 8789 fan_status_access_mode = TPACPI_FAN_NONE; 8790 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8791 fan_control_commands = 0; 8792 fan_watchdog_maxinterval = 0; 8793 tp_features.fan_ctrl_status_undef = 0; 8794 tp_features.second_fan = 0; 8795 tp_features.second_fan_ctl = 0; 8796 fan_control_desired_level = 7; 8797 8798 if (tpacpi_is_ibm()) { 8799 TPACPI_ACPIHANDLE_INIT(fans); 8800 TPACPI_ACPIHANDLE_INIT(gfan); 8801 TPACPI_ACPIHANDLE_INIT(sfan); 8802 } 8803 8804 quirks = tpacpi_check_quirks(fan_quirk_table, 8805 ARRAY_SIZE(fan_quirk_table)); 8806 8807 if (gfan_handle) { 8808 /* 570, 600e/x, 770e, 770x */ 8809 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8810 } else { 8811 /* all other ThinkPads: note that even old-style 8812 * ThinkPad ECs supports the fan control register */ 8813 if (likely(acpi_ec_read(fan_status_offset, 8814 &fan_control_initial_status))) { 8815 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 8816 if (quirks & TPACPI_FAN_Q1) 8817 fan_quirk1_setup(); 8818 if (quirks & TPACPI_FAN_2FAN) { 8819 tp_features.second_fan = 1; 8820 pr_info("secondary fan support enabled\n"); 8821 } 8822 if (quirks & TPACPI_FAN_2CTL) { 8823 tp_features.second_fan = 1; 8824 tp_features.second_fan_ctl = 1; 8825 pr_info("secondary fan control enabled\n"); 8826 } 8827 } else { 8828 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8829 return 1; 8830 } 8831 } 8832 8833 if (sfan_handle) { 8834 /* 570, 770x-JL */ 8835 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8836 fan_control_commands |= 8837 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8838 } else { 8839 if (!gfan_handle) { 8840 /* gfan without sfan means no fan control */ 8841 /* all other models implement TP EC 0x2f control */ 8842 8843 if (fans_handle) { 8844 /* X31, X40, X41 */ 8845 fan_control_access_mode = 8846 TPACPI_FAN_WR_ACPI_FANS; 8847 fan_control_commands |= 8848 TPACPI_FAN_CMD_SPEED | 8849 TPACPI_FAN_CMD_LEVEL | 8850 TPACPI_FAN_CMD_ENABLE; 8851 } else { 8852 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8853 fan_control_commands |= 8854 TPACPI_FAN_CMD_LEVEL | 8855 TPACPI_FAN_CMD_ENABLE; 8856 } 8857 } 8858 } 8859 8860 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8861 "fan is %s, modes %d, %d\n", 8862 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8863 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8864 fan_status_access_mode, fan_control_access_mode); 8865 8866 /* fan control master switch */ 8867 if (!fan_control_allowed) { 8868 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8869 fan_control_commands = 0; 8870 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8871 "fan control features disabled by parameter\n"); 8872 } 8873 8874 /* update fan_control_desired_level */ 8875 if (fan_status_access_mode != TPACPI_FAN_NONE) 8876 fan_get_status_safe(NULL); 8877 8878 if (fan_status_access_mode != TPACPI_FAN_NONE || 8879 fan_control_access_mode != TPACPI_FAN_WR_NONE) { 8880 if (tp_features.second_fan) { 8881 /* attach second fan tachometer */ 8882 fan_attributes[ARRAY_SIZE(fan_attributes)-2] = 8883 &dev_attr_fan2_input.attr; 8884 } 8885 rc = sysfs_create_group(&tpacpi_hwmon->kobj, 8886 &fan_attr_group); 8887 if (rc < 0) 8888 return rc; 8889 8890 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, 8891 &driver_attr_fan_watchdog); 8892 if (rc < 0) { 8893 sysfs_remove_group(&tpacpi_hwmon->kobj, 8894 &fan_attr_group); 8895 return rc; 8896 } 8897 return 0; 8898 } else 8899 return 1; 8900 } 8901 8902 static void fan_exit(void) 8903 { 8904 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8905 "cancelling any pending fan watchdog tasks\n"); 8906 8907 /* FIXME: can we really do this unconditionally? */ 8908 sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group); 8909 driver_remove_file(&tpacpi_hwmon_pdriver.driver, 8910 &driver_attr_fan_watchdog); 8911 8912 cancel_delayed_work(&fan_watchdog_task); 8913 flush_workqueue(tpacpi_wq); 8914 } 8915 8916 static void fan_suspend(void) 8917 { 8918 int rc; 8919 8920 if (!fan_control_allowed) 8921 return; 8922 8923 /* Store fan status in cache */ 8924 fan_control_resume_level = 0; 8925 rc = fan_get_status_safe(&fan_control_resume_level); 8926 if (rc < 0) 8927 pr_notice("failed to read fan level for later restore during resume: %d\n", 8928 rc); 8929 8930 /* if it is undefined, don't attempt to restore it. 8931 * KEEP THIS LAST */ 8932 if (tp_features.fan_ctrl_status_undef) 8933 fan_control_resume_level = 0; 8934 } 8935 8936 static void fan_resume(void) 8937 { 8938 u8 current_level = 7; 8939 bool do_set = false; 8940 int rc; 8941 8942 /* DSDT *always* updates status on resume */ 8943 tp_features.fan_ctrl_status_undef = 0; 8944 8945 if (!fan_control_allowed || 8946 !fan_control_resume_level || 8947 (fan_get_status_safe(¤t_level) < 0)) 8948 return; 8949 8950 switch (fan_control_access_mode) { 8951 case TPACPI_FAN_WR_ACPI_SFAN: 8952 /* never decrease fan level */ 8953 do_set = (fan_control_resume_level > current_level); 8954 break; 8955 case TPACPI_FAN_WR_ACPI_FANS: 8956 case TPACPI_FAN_WR_TPEC: 8957 /* never decrease fan level, scale is: 8958 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 8959 * 8960 * We expect the firmware to set either 7 or AUTO, but we 8961 * handle FULLSPEED out of paranoia. 8962 * 8963 * So, we can safely only restore FULLSPEED or 7, anything 8964 * else could slow the fan. Restoring AUTO is useless, at 8965 * best that's exactly what the DSDT already set (it is the 8966 * slower it uses). 8967 * 8968 * Always keep in mind that the DSDT *will* have set the 8969 * fans to what the vendor supposes is the best level. We 8970 * muck with it only to speed the fan up. 8971 */ 8972 if (fan_control_resume_level != 7 && 8973 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 8974 return; 8975 else 8976 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 8977 (current_level != fan_control_resume_level); 8978 break; 8979 default: 8980 return; 8981 } 8982 if (do_set) { 8983 pr_notice("restoring fan level to 0x%02x\n", 8984 fan_control_resume_level); 8985 rc = fan_set_level_safe(fan_control_resume_level); 8986 if (rc < 0) 8987 pr_notice("failed to restore fan level: %d\n", rc); 8988 } 8989 } 8990 8991 static int fan_read(struct seq_file *m) 8992 { 8993 int rc; 8994 u8 status; 8995 unsigned int speed = 0; 8996 8997 switch (fan_status_access_mode) { 8998 case TPACPI_FAN_RD_ACPI_GFAN: 8999 /* 570, 600e/x, 770e, 770x */ 9000 rc = fan_get_status_safe(&status); 9001 if (rc < 0) 9002 return rc; 9003 9004 seq_printf(m, "status:\t\t%s\n" 9005 "level:\t\t%d\n", 9006 (status != 0) ? "enabled" : "disabled", status); 9007 break; 9008 9009 case TPACPI_FAN_RD_TPEC: 9010 /* all except 570, 600e/x, 770e, 770x */ 9011 rc = fan_get_status_safe(&status); 9012 if (rc < 0) 9013 return rc; 9014 9015 seq_printf(m, "status:\t\t%s\n", 9016 (status != 0) ? "enabled" : "disabled"); 9017 9018 rc = fan_get_speed(&speed); 9019 if (rc < 0) 9020 return rc; 9021 9022 seq_printf(m, "speed:\t\t%d\n", speed); 9023 9024 if (status & TP_EC_FAN_FULLSPEED) 9025 /* Disengaged mode takes precedence */ 9026 seq_printf(m, "level:\t\tdisengaged\n"); 9027 else if (status & TP_EC_FAN_AUTO) 9028 seq_printf(m, "level:\t\tauto\n"); 9029 else 9030 seq_printf(m, "level:\t\t%d\n", status); 9031 break; 9032 9033 case TPACPI_FAN_NONE: 9034 default: 9035 seq_printf(m, "status:\t\tnot supported\n"); 9036 } 9037 9038 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9039 seq_printf(m, "commands:\tlevel <level>"); 9040 9041 switch (fan_control_access_mode) { 9042 case TPACPI_FAN_WR_ACPI_SFAN: 9043 seq_printf(m, " (<level> is 0-7)\n"); 9044 break; 9045 9046 default: 9047 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9048 break; 9049 } 9050 } 9051 9052 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9053 seq_printf(m, "commands:\tenable, disable\n" 9054 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9055 9056 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9057 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9058 9059 return 0; 9060 } 9061 9062 static int fan_write_cmd_level(const char *cmd, int *rc) 9063 { 9064 int level; 9065 9066 if (strlencmp(cmd, "level auto") == 0) 9067 level = TP_EC_FAN_AUTO; 9068 else if ((strlencmp(cmd, "level disengaged") == 0) || 9069 (strlencmp(cmd, "level full-speed") == 0)) 9070 level = TP_EC_FAN_FULLSPEED; 9071 else if (sscanf(cmd, "level %d", &level) != 1) 9072 return 0; 9073 9074 *rc = fan_set_level_safe(level); 9075 if (*rc == -ENXIO) 9076 pr_err("level command accepted for unsupported access mode %d\n", 9077 fan_control_access_mode); 9078 else if (!*rc) 9079 tpacpi_disclose_usertask("procfs fan", 9080 "set level to %d\n", level); 9081 9082 return 1; 9083 } 9084 9085 static int fan_write_cmd_enable(const char *cmd, int *rc) 9086 { 9087 if (strlencmp(cmd, "enable") != 0) 9088 return 0; 9089 9090 *rc = fan_set_enable(); 9091 if (*rc == -ENXIO) 9092 pr_err("enable command accepted for unsupported access mode %d\n", 9093 fan_control_access_mode); 9094 else if (!*rc) 9095 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9096 9097 return 1; 9098 } 9099 9100 static int fan_write_cmd_disable(const char *cmd, int *rc) 9101 { 9102 if (strlencmp(cmd, "disable") != 0) 9103 return 0; 9104 9105 *rc = fan_set_disable(); 9106 if (*rc == -ENXIO) 9107 pr_err("disable command accepted for unsupported access mode %d\n", 9108 fan_control_access_mode); 9109 else if (!*rc) 9110 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9111 9112 return 1; 9113 } 9114 9115 static int fan_write_cmd_speed(const char *cmd, int *rc) 9116 { 9117 int speed; 9118 9119 /* TODO: 9120 * Support speed <low> <medium> <high> ? */ 9121 9122 if (sscanf(cmd, "speed %d", &speed) != 1) 9123 return 0; 9124 9125 *rc = fan_set_speed(speed); 9126 if (*rc == -ENXIO) 9127 pr_err("speed command accepted for unsupported access mode %d\n", 9128 fan_control_access_mode); 9129 else if (!*rc) 9130 tpacpi_disclose_usertask("procfs fan", 9131 "set speed to %d\n", speed); 9132 9133 return 1; 9134 } 9135 9136 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9137 { 9138 int interval; 9139 9140 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9141 return 0; 9142 9143 if (interval < 0 || interval > 120) 9144 *rc = -EINVAL; 9145 else { 9146 fan_watchdog_maxinterval = interval; 9147 tpacpi_disclose_usertask("procfs fan", 9148 "set watchdog timer to %d\n", 9149 interval); 9150 } 9151 9152 return 1; 9153 } 9154 9155 static int fan_write(char *buf) 9156 { 9157 char *cmd; 9158 int rc = 0; 9159 9160 while (!rc && (cmd = strsep(&buf, ","))) { 9161 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9162 fan_write_cmd_level(cmd, &rc)) && 9163 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9164 (fan_write_cmd_enable(cmd, &rc) || 9165 fan_write_cmd_disable(cmd, &rc) || 9166 fan_write_cmd_watchdog(cmd, &rc))) && 9167 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9168 fan_write_cmd_speed(cmd, &rc)) 9169 ) 9170 rc = -EINVAL; 9171 else if (!rc) 9172 fan_watchdog_reset(); 9173 } 9174 9175 return rc; 9176 } 9177 9178 static struct ibm_struct fan_driver_data = { 9179 .name = "fan", 9180 .read = fan_read, 9181 .write = fan_write, 9182 .exit = fan_exit, 9183 .suspend = fan_suspend, 9184 .resume = fan_resume, 9185 }; 9186 9187 /************************************************************************* 9188 * Mute LED subdriver 9189 */ 9190 9191 #define TPACPI_LED_MAX 2 9192 9193 struct tp_led_table { 9194 acpi_string name; 9195 int on_value; 9196 int off_value; 9197 int state; 9198 }; 9199 9200 static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9201 [LED_AUDIO_MUTE] = { 9202 .name = "SSMS", 9203 .on_value = 1, 9204 .off_value = 0, 9205 }, 9206 [LED_AUDIO_MICMUTE] = { 9207 .name = "MMTS", 9208 .on_value = 2, 9209 .off_value = 0, 9210 }, 9211 }; 9212 9213 static int mute_led_on_off(struct tp_led_table *t, bool state) 9214 { 9215 acpi_handle temp; 9216 int output; 9217 9218 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9219 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9220 return -EIO; 9221 } 9222 9223 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9224 state ? t->on_value : t->off_value)) 9225 return -EIO; 9226 9227 t->state = state; 9228 return state; 9229 } 9230 9231 static int tpacpi_led_set(int whichled, bool on) 9232 { 9233 struct tp_led_table *t; 9234 9235 t = &led_tables[whichled]; 9236 if (t->state < 0 || t->state == on) 9237 return t->state; 9238 return mute_led_on_off(t, on); 9239 } 9240 9241 static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9242 enum led_brightness brightness) 9243 { 9244 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9245 } 9246 9247 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9248 enum led_brightness brightness) 9249 { 9250 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9251 } 9252 9253 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9254 [LED_AUDIO_MUTE] = { 9255 .name = "platform::mute", 9256 .max_brightness = 1, 9257 .brightness_set_blocking = tpacpi_led_mute_set, 9258 .default_trigger = "audio-mute", 9259 }, 9260 [LED_AUDIO_MICMUTE] = { 9261 .name = "platform::micmute", 9262 .max_brightness = 1, 9263 .brightness_set_blocking = tpacpi_led_micmute_set, 9264 .default_trigger = "audio-micmute", 9265 }, 9266 }; 9267 9268 static int mute_led_init(struct ibm_init_struct *iibm) 9269 { 9270 acpi_handle temp; 9271 int i, err; 9272 9273 for (i = 0; i < TPACPI_LED_MAX; i++) { 9274 struct tp_led_table *t = &led_tables[i]; 9275 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9276 t->state = -ENODEV; 9277 continue; 9278 } 9279 9280 mute_led_cdev[i].brightness = ledtrig_audio_get(i); 9281 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9282 if (err < 0) { 9283 while (i--) 9284 led_classdev_unregister(&mute_led_cdev[i]); 9285 return err; 9286 } 9287 } 9288 return 0; 9289 } 9290 9291 static void mute_led_exit(void) 9292 { 9293 int i; 9294 9295 for (i = 0; i < TPACPI_LED_MAX; i++) { 9296 led_classdev_unregister(&mute_led_cdev[i]); 9297 tpacpi_led_set(i, false); 9298 } 9299 } 9300 9301 static void mute_led_resume(void) 9302 { 9303 int i; 9304 9305 for (i = 0; i < TPACPI_LED_MAX; i++) { 9306 struct tp_led_table *t = &led_tables[i]; 9307 if (t->state >= 0) 9308 mute_led_on_off(t, t->state); 9309 } 9310 } 9311 9312 static struct ibm_struct mute_led_driver_data = { 9313 .name = "mute_led", 9314 .exit = mute_led_exit, 9315 .resume = mute_led_resume, 9316 }; 9317 9318 /* 9319 * Battery Wear Control Driver 9320 * Contact: Ognjen Galic <smclt30p@gmail.com> 9321 */ 9322 9323 /* Metadata */ 9324 9325 #define GET_START "BCTG" 9326 #define SET_START "BCCS" 9327 #define GET_STOP "BCSG" 9328 #define SET_STOP "BCSS" 9329 9330 enum { 9331 BAT_ANY = 0, 9332 BAT_PRIMARY = 1, 9333 BAT_SECONDARY = 2 9334 }; 9335 9336 enum { 9337 /* Error condition bit */ 9338 METHOD_ERR = BIT(31), 9339 }; 9340 9341 enum { 9342 /* This is used in the get/set helpers */ 9343 THRESHOLD_START, 9344 THRESHOLD_STOP, 9345 }; 9346 9347 struct tpacpi_battery_data { 9348 int charge_start; 9349 int start_support; 9350 int charge_stop; 9351 int stop_support; 9352 }; 9353 9354 struct tpacpi_battery_driver_data { 9355 struct tpacpi_battery_data batteries[3]; 9356 int individual_addressing; 9357 }; 9358 9359 static struct tpacpi_battery_driver_data battery_info; 9360 9361 /* ACPI helpers/functions/probes */ 9362 9363 /** 9364 * This evaluates a ACPI method call specific to the battery 9365 * ACPI extension. The specifics are that an error is marked 9366 * in the 32rd bit of the response, so we just check that here. 9367 */ 9368 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9369 { 9370 int response; 9371 9372 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9373 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9374 return AE_ERROR; 9375 } 9376 if (response & METHOD_ERR) { 9377 acpi_handle_err(hkey_handle, 9378 "%s evaluated but flagged as error", method); 9379 return AE_ERROR; 9380 } 9381 *ret = response; 9382 return AE_OK; 9383 } 9384 9385 static int tpacpi_battery_get(int what, int battery, int *ret) 9386 { 9387 switch (what) { 9388 case THRESHOLD_START: 9389 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) 9390 return -ENODEV; 9391 9392 /* The value is in the low 8 bits of the response */ 9393 *ret = *ret & 0xFF; 9394 return 0; 9395 case THRESHOLD_STOP: 9396 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) 9397 return -ENODEV; 9398 /* Value is in lower 8 bits */ 9399 *ret = *ret & 0xFF; 9400 /* 9401 * On the stop value, if we return 0 that 9402 * does not make any sense. 0 means Default, which 9403 * means that charging stops at 100%, so we return 9404 * that. 9405 */ 9406 if (*ret == 0) 9407 *ret = 100; 9408 return 0; 9409 default: 9410 pr_crit("wrong parameter: %d", what); 9411 return -EINVAL; 9412 } 9413 } 9414 9415 static int tpacpi_battery_set(int what, int battery, int value) 9416 { 9417 int param, ret; 9418 /* The first 8 bits are the value of the threshold */ 9419 param = value; 9420 /* The battery ID is in bits 8-9, 2 bits */ 9421 param |= battery << 8; 9422 9423 switch (what) { 9424 case THRESHOLD_START: 9425 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9426 pr_err("failed to set charge threshold on battery %d", 9427 battery); 9428 return -ENODEV; 9429 } 9430 return 0; 9431 case THRESHOLD_STOP: 9432 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9433 pr_err("failed to set stop threshold: %d", battery); 9434 return -ENODEV; 9435 } 9436 return 0; 9437 default: 9438 pr_crit("wrong parameter: %d", what); 9439 return -EINVAL; 9440 } 9441 } 9442 9443 static int tpacpi_battery_probe(int battery) 9444 { 9445 int ret = 0; 9446 9447 memset(&battery_info.batteries[battery], 0, 9448 sizeof(battery_info.batteries[battery])); 9449 9450 /* 9451 * 1) Get the current start threshold 9452 * 2) Check for support 9453 * 3) Get the current stop threshold 9454 * 4) Check for support 9455 */ 9456 if (acpi_has_method(hkey_handle, GET_START)) { 9457 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9458 pr_err("Error probing battery %d\n", battery); 9459 return -ENODEV; 9460 } 9461 /* Individual addressing is in bit 9 */ 9462 if (ret & BIT(9)) 9463 battery_info.individual_addressing = true; 9464 /* Support is marked in bit 8 */ 9465 if (ret & BIT(8)) 9466 battery_info.batteries[battery].start_support = 1; 9467 else 9468 return -ENODEV; 9469 if (tpacpi_battery_get(THRESHOLD_START, battery, 9470 &battery_info.batteries[battery].charge_start)) { 9471 pr_err("Error probing battery %d\n", battery); 9472 return -ENODEV; 9473 } 9474 } 9475 if (acpi_has_method(hkey_handle, GET_STOP)) { 9476 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9477 pr_err("Error probing battery stop; %d\n", battery); 9478 return -ENODEV; 9479 } 9480 /* Support is marked in bit 8 */ 9481 if (ret & BIT(8)) 9482 battery_info.batteries[battery].stop_support = 1; 9483 else 9484 return -ENODEV; 9485 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9486 &battery_info.batteries[battery].charge_stop)) { 9487 pr_err("Error probing battery stop: %d\n", battery); 9488 return -ENODEV; 9489 } 9490 } 9491 pr_info("battery %d registered (start %d, stop %d)", 9492 battery, 9493 battery_info.batteries[battery].charge_start, 9494 battery_info.batteries[battery].charge_stop); 9495 9496 return 0; 9497 } 9498 9499 /* General helper functions */ 9500 9501 static int tpacpi_battery_get_id(const char *battery_name) 9502 { 9503 9504 if (strcmp(battery_name, "BAT0") == 0 || 9505 tp_features.battery_force_primary) 9506 return BAT_PRIMARY; 9507 if (strcmp(battery_name, "BAT1") == 0) 9508 return BAT_SECONDARY; 9509 /* 9510 * If for some reason the battery is not BAT0 nor is it 9511 * BAT1, we will assume it's the default, first battery, 9512 * AKA primary. 9513 */ 9514 pr_warn("unknown battery %s, assuming primary", battery_name); 9515 return BAT_PRIMARY; 9516 } 9517 9518 /* sysfs interface */ 9519 9520 static ssize_t tpacpi_battery_store(int what, 9521 struct device *dev, 9522 const char *buf, size_t count) 9523 { 9524 struct power_supply *supply = to_power_supply(dev); 9525 unsigned long value; 9526 int battery, rval; 9527 /* 9528 * Some systems have support for more than 9529 * one battery. If that is the case, 9530 * tpacpi_battery_probe marked that addressing 9531 * them individually is supported, so we do that 9532 * based on the device struct. 9533 * 9534 * On systems that are not supported, we assume 9535 * the primary as most of the ACPI calls fail 9536 * with "Any Battery" as the parameter. 9537 */ 9538 if (battery_info.individual_addressing) 9539 /* BAT_PRIMARY or BAT_SECONDARY */ 9540 battery = tpacpi_battery_get_id(supply->desc->name); 9541 else 9542 battery = BAT_PRIMARY; 9543 9544 rval = kstrtoul(buf, 10, &value); 9545 if (rval) 9546 return rval; 9547 9548 switch (what) { 9549 case THRESHOLD_START: 9550 if (!battery_info.batteries[battery].start_support) 9551 return -ENODEV; 9552 /* valid values are [0, 99] */ 9553 if (value > 99) 9554 return -EINVAL; 9555 if (value > battery_info.batteries[battery].charge_stop) 9556 return -EINVAL; 9557 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9558 return -ENODEV; 9559 battery_info.batteries[battery].charge_start = value; 9560 return count; 9561 9562 case THRESHOLD_STOP: 9563 if (!battery_info.batteries[battery].stop_support) 9564 return -ENODEV; 9565 /* valid values are [1, 100] */ 9566 if (value < 1 || value > 100) 9567 return -EINVAL; 9568 if (value < battery_info.batteries[battery].charge_start) 9569 return -EINVAL; 9570 battery_info.batteries[battery].charge_stop = value; 9571 /* 9572 * When 100 is passed to stop, we need to flip 9573 * it to 0 as that the EC understands that as 9574 * "Default", which will charge to 100% 9575 */ 9576 if (value == 100) 9577 value = 0; 9578 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9579 return -EINVAL; 9580 return count; 9581 default: 9582 pr_crit("Wrong parameter: %d", what); 9583 return -EINVAL; 9584 } 9585 return count; 9586 } 9587 9588 static ssize_t tpacpi_battery_show(int what, 9589 struct device *dev, 9590 char *buf) 9591 { 9592 struct power_supply *supply = to_power_supply(dev); 9593 int ret, battery; 9594 /* 9595 * Some systems have support for more than 9596 * one battery. If that is the case, 9597 * tpacpi_battery_probe marked that addressing 9598 * them individually is supported, so we; 9599 * based on the device struct. 9600 * 9601 * On systems that are not supported, we assume 9602 * the primary as most of the ACPI calls fail 9603 * with "Any Battery" as the parameter. 9604 */ 9605 if (battery_info.individual_addressing) 9606 /* BAT_PRIMARY or BAT_SECONDARY */ 9607 battery = tpacpi_battery_get_id(supply->desc->name); 9608 else 9609 battery = BAT_PRIMARY; 9610 if (tpacpi_battery_get(what, battery, &ret)) 9611 return -ENODEV; 9612 return sprintf(buf, "%d\n", ret); 9613 } 9614 9615 static ssize_t charge_control_start_threshold_show(struct device *device, 9616 struct device_attribute *attr, 9617 char *buf) 9618 { 9619 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9620 } 9621 9622 static ssize_t charge_control_end_threshold_show(struct device *device, 9623 struct device_attribute *attr, 9624 char *buf) 9625 { 9626 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9627 } 9628 9629 static ssize_t charge_control_start_threshold_store(struct device *dev, 9630 struct device_attribute *attr, 9631 const char *buf, size_t count) 9632 { 9633 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9634 } 9635 9636 static ssize_t charge_control_end_threshold_store(struct device *dev, 9637 struct device_attribute *attr, 9638 const char *buf, size_t count) 9639 { 9640 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9641 } 9642 9643 static DEVICE_ATTR_RW(charge_control_start_threshold); 9644 static DEVICE_ATTR_RW(charge_control_end_threshold); 9645 static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9646 charge_start_threshold, 9647 0644, 9648 charge_control_start_threshold_show, 9649 charge_control_start_threshold_store 9650 ); 9651 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9652 charge_stop_threshold, 9653 0644, 9654 charge_control_end_threshold_show, 9655 charge_control_end_threshold_store 9656 ); 9657 9658 static struct attribute *tpacpi_battery_attrs[] = { 9659 &dev_attr_charge_control_start_threshold.attr, 9660 &dev_attr_charge_control_end_threshold.attr, 9661 &dev_attr_charge_start_threshold.attr, 9662 &dev_attr_charge_stop_threshold.attr, 9663 NULL, 9664 }; 9665 9666 ATTRIBUTE_GROUPS(tpacpi_battery); 9667 9668 /* ACPI battery hooking */ 9669 9670 static int tpacpi_battery_add(struct power_supply *battery) 9671 { 9672 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9673 9674 if (tpacpi_battery_probe(batteryid)) 9675 return -ENODEV; 9676 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9677 return -ENODEV; 9678 return 0; 9679 } 9680 9681 static int tpacpi_battery_remove(struct power_supply *battery) 9682 { 9683 device_remove_groups(&battery->dev, tpacpi_battery_groups); 9684 return 0; 9685 } 9686 9687 static struct acpi_battery_hook battery_hook = { 9688 .add_battery = tpacpi_battery_add, 9689 .remove_battery = tpacpi_battery_remove, 9690 .name = "ThinkPad Battery Extension", 9691 }; 9692 9693 /* Subdriver init/exit */ 9694 9695 static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 9696 /* 9697 * Individual addressing is broken on models that expose the 9698 * primary battery as BAT1. 9699 */ 9700 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 9701 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 9702 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 9703 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 9704 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 9705 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 9706 }; 9707 9708 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 9709 { 9710 memset(&battery_info, 0, sizeof(battery_info)); 9711 9712 tp_features.battery_force_primary = tpacpi_check_quirks( 9713 battery_quirk_table, 9714 ARRAY_SIZE(battery_quirk_table)); 9715 9716 battery_hook_register(&battery_hook); 9717 return 0; 9718 } 9719 9720 static void tpacpi_battery_exit(void) 9721 { 9722 battery_hook_unregister(&battery_hook); 9723 } 9724 9725 static struct ibm_struct battery_driver_data = { 9726 .name = "battery", 9727 .exit = tpacpi_battery_exit, 9728 }; 9729 9730 /************************************************************************* 9731 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 9732 */ 9733 9734 static struct drm_privacy_screen *lcdshadow_dev; 9735 static acpi_handle lcdshadow_get_handle; 9736 static acpi_handle lcdshadow_set_handle; 9737 9738 static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv, 9739 enum drm_privacy_screen_status state) 9740 { 9741 int output; 9742 9743 if (WARN_ON(!mutex_is_locked(&priv->lock))) 9744 return -EIO; 9745 9746 if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state)) 9747 return -EIO; 9748 9749 priv->hw_state = priv->sw_state = state; 9750 return 0; 9751 } 9752 9753 static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv) 9754 { 9755 int output; 9756 9757 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 9758 return; 9759 9760 priv->hw_state = priv->sw_state = output & 0x1; 9761 } 9762 9763 static const struct drm_privacy_screen_ops lcdshadow_ops = { 9764 .set_sw_state = lcdshadow_set_sw_state, 9765 .get_hw_state = lcdshadow_get_hw_state, 9766 }; 9767 9768 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 9769 { 9770 acpi_status status1, status2; 9771 int output; 9772 9773 status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle); 9774 status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle); 9775 if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2)) 9776 return 0; 9777 9778 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 9779 return -EIO; 9780 9781 if (!(output & 0x10000)) 9782 return 0; 9783 9784 lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev, 9785 &lcdshadow_ops); 9786 if (IS_ERR(lcdshadow_dev)) 9787 return PTR_ERR(lcdshadow_dev); 9788 9789 return 0; 9790 } 9791 9792 static void lcdshadow_exit(void) 9793 { 9794 drm_privacy_screen_unregister(lcdshadow_dev); 9795 } 9796 9797 static void lcdshadow_resume(void) 9798 { 9799 if (!lcdshadow_dev) 9800 return; 9801 9802 mutex_lock(&lcdshadow_dev->lock); 9803 lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state); 9804 mutex_unlock(&lcdshadow_dev->lock); 9805 } 9806 9807 static int lcdshadow_read(struct seq_file *m) 9808 { 9809 if (!lcdshadow_dev) { 9810 seq_puts(m, "status:\t\tnot supported\n"); 9811 } else { 9812 seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state); 9813 seq_puts(m, "commands:\t0, 1\n"); 9814 } 9815 9816 return 0; 9817 } 9818 9819 static int lcdshadow_write(char *buf) 9820 { 9821 char *cmd; 9822 int res, state = -EINVAL; 9823 9824 if (!lcdshadow_dev) 9825 return -ENODEV; 9826 9827 while ((cmd = strsep(&buf, ","))) { 9828 res = kstrtoint(cmd, 10, &state); 9829 if (res < 0) 9830 return res; 9831 } 9832 9833 if (state >= 2 || state < 0) 9834 return -EINVAL; 9835 9836 mutex_lock(&lcdshadow_dev->lock); 9837 res = lcdshadow_set_sw_state(lcdshadow_dev, state); 9838 mutex_unlock(&lcdshadow_dev->lock); 9839 9840 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 9841 9842 return res; 9843 } 9844 9845 static struct ibm_struct lcdshadow_driver_data = { 9846 .name = "lcdshadow", 9847 .exit = lcdshadow_exit, 9848 .resume = lcdshadow_resume, 9849 .read = lcdshadow_read, 9850 .write = lcdshadow_write, 9851 }; 9852 9853 /************************************************************************* 9854 * Thinkpad sensor interfaces 9855 */ 9856 9857 #define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ 9858 #define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ 9859 #define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ 9860 #define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ 9861 9862 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 9863 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 9864 9865 #define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */ 9866 #define PALMSENSOR_ON_BIT 1 /* psensor status */ 9867 9868 static bool has_palmsensor; 9869 static bool has_lapsensor; 9870 static bool palm_state; 9871 static bool lap_state; 9872 static int dytc_version; 9873 9874 static int dytc_command(int command, int *output) 9875 { 9876 acpi_handle dytc_handle; 9877 9878 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 9879 /* Platform doesn't support DYTC */ 9880 return -ENODEV; 9881 } 9882 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 9883 return -EIO; 9884 return 0; 9885 } 9886 9887 static int dytc_get_version(void) 9888 { 9889 int err, output; 9890 9891 /* Check if we've been called before - and just return cached value */ 9892 if (dytc_version) 9893 return dytc_version; 9894 9895 /* Otherwise query DYTC and extract version information */ 9896 err = dytc_command(DYTC_CMD_QUERY, &output); 9897 /* 9898 * If support isn't available (ENODEV) then don't return an error 9899 * and don't create the sysfs group 9900 */ 9901 if (err == -ENODEV) 9902 return 0; 9903 /* For all other errors we can flag the failure */ 9904 if (err) 9905 return err; 9906 9907 /* Check DYTC is enabled and supports mode setting */ 9908 if (output & BIT(DYTC_QUERY_ENABLE_BIT)) 9909 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; 9910 9911 return 0; 9912 } 9913 9914 static int lapsensor_get(bool *present, bool *state) 9915 { 9916 int output, err; 9917 9918 *present = false; 9919 err = dytc_command(DYTC_CMD_GET, &output); 9920 if (err) 9921 return err; 9922 9923 *present = true; /*If we get his far, we have lapmode support*/ 9924 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 9925 return 0; 9926 } 9927 9928 static int palmsensor_get(bool *present, bool *state) 9929 { 9930 acpi_handle psensor_handle; 9931 int output; 9932 9933 *present = false; 9934 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle))) 9935 return -ENODEV; 9936 if (!acpi_evalf(psensor_handle, &output, NULL, "d")) 9937 return -EIO; 9938 9939 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false; 9940 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false; 9941 return 0; 9942 } 9943 9944 static void lapsensor_refresh(void) 9945 { 9946 bool state; 9947 int err; 9948 9949 if (has_lapsensor) { 9950 err = lapsensor_get(&has_lapsensor, &state); 9951 if (err) 9952 return; 9953 if (lap_state != state) { 9954 lap_state = state; 9955 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 9956 } 9957 } 9958 } 9959 9960 static void palmsensor_refresh(void) 9961 { 9962 bool state; 9963 int err; 9964 9965 if (has_palmsensor) { 9966 err = palmsensor_get(&has_palmsensor, &state); 9967 if (err) 9968 return; 9969 if (palm_state != state) { 9970 palm_state = state; 9971 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor"); 9972 } 9973 } 9974 } 9975 9976 static ssize_t dytc_lapmode_show(struct device *dev, 9977 struct device_attribute *attr, 9978 char *buf) 9979 { 9980 if (has_lapsensor) 9981 return sysfs_emit(buf, "%d\n", lap_state); 9982 return sysfs_emit(buf, "\n"); 9983 } 9984 static DEVICE_ATTR_RO(dytc_lapmode); 9985 9986 static ssize_t palmsensor_show(struct device *dev, 9987 struct device_attribute *attr, 9988 char *buf) 9989 { 9990 if (has_palmsensor) 9991 return sysfs_emit(buf, "%d\n", palm_state); 9992 return sysfs_emit(buf, "\n"); 9993 } 9994 static DEVICE_ATTR_RO(palmsensor); 9995 9996 static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm) 9997 { 9998 int palm_err, lap_err, err; 9999 10000 palm_err = palmsensor_get(&has_palmsensor, &palm_state); 10001 lap_err = lapsensor_get(&has_lapsensor, &lap_state); 10002 /* 10003 * If support isn't available (ENODEV) for both devices then quit, but 10004 * don't return an error. 10005 */ 10006 if ((palm_err == -ENODEV) && (lap_err == -ENODEV)) 10007 return 0; 10008 /* Otherwise, if there was an error return it */ 10009 if (palm_err && (palm_err != -ENODEV)) 10010 return palm_err; 10011 if (lap_err && (lap_err != -ENODEV)) 10012 return lap_err; 10013 10014 if (has_palmsensor) { 10015 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_palmsensor.attr); 10016 if (err) 10017 return err; 10018 } 10019 10020 /* Check if we know the DYTC version, if we don't then get it */ 10021 if (!dytc_version) { 10022 err = dytc_get_version(); 10023 if (err) 10024 return err; 10025 } 10026 /* 10027 * Platforms before DYTC version 5 claim to have a lap sensor, but it doesn't work, so we 10028 * ignore them 10029 */ 10030 if (has_lapsensor && (dytc_version >= 5)) { 10031 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_dytc_lapmode.attr); 10032 if (err) 10033 return err; 10034 } 10035 return 0; 10036 } 10037 10038 static void proxsensor_exit(void) 10039 { 10040 if (has_lapsensor) 10041 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_dytc_lapmode.attr); 10042 if (has_palmsensor) 10043 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_palmsensor.attr); 10044 } 10045 10046 static struct ibm_struct proxsensor_driver_data = { 10047 .name = "proximity-sensor", 10048 .exit = proxsensor_exit, 10049 }; 10050 10051 /************************************************************************* 10052 * DYTC Platform Profile interface 10053 */ 10054 10055 #define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ 10056 #define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */ 10057 #define DYTC_CMD_RESET 0x1ff /* To reset back to default */ 10058 10059 #define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ 10060 #define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ 10061 10062 #define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ 10063 #define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ 10064 #define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ 10065 10066 #define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ 10067 #define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ 10068 #define DYTC_FUNCTION_MMC 11 /* Function = 11, desk mode */ 10069 10070 #define DYTC_MODE_PERFORM 2 /* High power mode aka performance */ 10071 #define DYTC_MODE_LOWPOWER 3 /* Low power mode */ 10072 #define DYTC_MODE_BALANCE 0xF /* Default mode aka balanced */ 10073 #define DYTC_MODE_MMC_BALANCE 0 /* Default mode from MMC_GET, aka balanced */ 10074 10075 #define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */ 10076 #define DYTC_ERR_SUCCESS 1 /* CMD completed successful */ 10077 10078 #define DYTC_SET_COMMAND(function, mode, on) \ 10079 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ 10080 (mode) << DYTC_SET_MODE_BIT | \ 10081 (on) << DYTC_SET_VALID_BIT) 10082 10083 #define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 0) 10084 10085 #define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 1) 10086 10087 static bool dytc_profile_available; 10088 static enum platform_profile_option dytc_current_profile; 10089 static atomic_t dytc_ignore_event = ATOMIC_INIT(0); 10090 static DEFINE_MUTEX(dytc_mutex); 10091 static bool dytc_mmc_get_available; 10092 10093 static int convert_dytc_to_profile(int dytcmode, enum platform_profile_option *profile) 10094 { 10095 switch (dytcmode) { 10096 case DYTC_MODE_LOWPOWER: 10097 *profile = PLATFORM_PROFILE_LOW_POWER; 10098 break; 10099 case DYTC_MODE_BALANCE: 10100 case DYTC_MODE_MMC_BALANCE: 10101 *profile = PLATFORM_PROFILE_BALANCED; 10102 break; 10103 case DYTC_MODE_PERFORM: 10104 *profile = PLATFORM_PROFILE_PERFORMANCE; 10105 break; 10106 default: /* Unknown mode */ 10107 return -EINVAL; 10108 } 10109 return 0; 10110 } 10111 10112 static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) 10113 { 10114 switch (profile) { 10115 case PLATFORM_PROFILE_LOW_POWER: 10116 *perfmode = DYTC_MODE_LOWPOWER; 10117 break; 10118 case PLATFORM_PROFILE_BALANCED: 10119 *perfmode = DYTC_MODE_BALANCE; 10120 break; 10121 case PLATFORM_PROFILE_PERFORMANCE: 10122 *perfmode = DYTC_MODE_PERFORM; 10123 break; 10124 default: /* Unknown profile */ 10125 return -EOPNOTSUPP; 10126 } 10127 return 0; 10128 } 10129 10130 /* 10131 * dytc_profile_get: Function to register with platform_profile 10132 * handler. Returns current platform profile. 10133 */ 10134 static int dytc_profile_get(struct platform_profile_handler *pprof, 10135 enum platform_profile_option *profile) 10136 { 10137 *profile = dytc_current_profile; 10138 return 0; 10139 } 10140 10141 /* 10142 * Helper function - check if we are in CQL mode and if we are 10143 * - disable CQL, 10144 * - run the command 10145 * - enable CQL 10146 * If not in CQL mode, just run the command 10147 */ 10148 static int dytc_cql_command(int command, int *output) 10149 { 10150 int err, cmd_err, dummy; 10151 int cur_funcmode; 10152 10153 /* Determine if we are in CQL mode. This alters the commands we do */ 10154 err = dytc_command(DYTC_CMD_GET, output); 10155 if (err) 10156 return err; 10157 10158 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10159 /* Check if we're OK to return immediately */ 10160 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) 10161 return 0; 10162 10163 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10164 atomic_inc(&dytc_ignore_event); 10165 err = dytc_command(DYTC_DISABLE_CQL, &dummy); 10166 if (err) 10167 return err; 10168 } 10169 10170 cmd_err = dytc_command(command, output); 10171 /* Check return condition after we've restored CQL state */ 10172 10173 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10174 err = dytc_command(DYTC_ENABLE_CQL, &dummy); 10175 if (err) 10176 return err; 10177 } 10178 return cmd_err; 10179 } 10180 10181 /* 10182 * dytc_profile_set: Function to register with platform_profile 10183 * handler. Sets current platform profile. 10184 */ 10185 static int dytc_profile_set(struct platform_profile_handler *pprof, 10186 enum platform_profile_option profile) 10187 { 10188 int output; 10189 int err; 10190 10191 if (!dytc_profile_available) 10192 return -ENODEV; 10193 10194 err = mutex_lock_interruptible(&dytc_mutex); 10195 if (err) 10196 return err; 10197 10198 if (profile == PLATFORM_PROFILE_BALANCED) { 10199 /* 10200 * To get back to balanced mode we need to issue a reset command. 10201 * Note we still need to disable CQL mode before hand and re-enable 10202 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays 10203 * stuck at 0 for aprox. 30 minutes. 10204 */ 10205 err = dytc_cql_command(DYTC_CMD_RESET, &output); 10206 if (err) 10207 goto unlock; 10208 } else { 10209 int perfmode; 10210 10211 err = convert_profile_to_dytc(profile, &perfmode); 10212 if (err) 10213 goto unlock; 10214 10215 /* Determine if we are in CQL mode. This alters the commands we do */ 10216 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), &output); 10217 if (err) 10218 goto unlock; 10219 } 10220 /* Success - update current profile */ 10221 dytc_current_profile = profile; 10222 unlock: 10223 mutex_unlock(&dytc_mutex); 10224 return err; 10225 } 10226 10227 static void dytc_profile_refresh(void) 10228 { 10229 enum platform_profile_option profile; 10230 int output, err; 10231 int perfmode; 10232 10233 mutex_lock(&dytc_mutex); 10234 if (dytc_mmc_get_available) 10235 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10236 else 10237 err = dytc_cql_command(DYTC_CMD_GET, &output); 10238 mutex_unlock(&dytc_mutex); 10239 if (err) 10240 return; 10241 10242 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; 10243 convert_dytc_to_profile(perfmode, &profile); 10244 if (profile != dytc_current_profile) { 10245 dytc_current_profile = profile; 10246 platform_profile_notify(); 10247 } 10248 } 10249 10250 static struct platform_profile_handler dytc_profile = { 10251 .profile_get = dytc_profile_get, 10252 .profile_set = dytc_profile_set, 10253 }; 10254 10255 static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) 10256 { 10257 int err, output; 10258 10259 /* Setup supported modes */ 10260 set_bit(PLATFORM_PROFILE_LOW_POWER, dytc_profile.choices); 10261 set_bit(PLATFORM_PROFILE_BALANCED, dytc_profile.choices); 10262 set_bit(PLATFORM_PROFILE_PERFORMANCE, dytc_profile.choices); 10263 10264 dytc_profile_available = false; 10265 err = dytc_command(DYTC_CMD_QUERY, &output); 10266 /* 10267 * If support isn't available (ENODEV) then don't return an error 10268 * and don't create the sysfs group 10269 */ 10270 if (err == -ENODEV) 10271 return 0; 10272 /* For all other errors we can flag the failure */ 10273 if (err) 10274 return err; 10275 10276 /* Check if we know the DYTC version, if we don't then get it */ 10277 if (!dytc_version) { 10278 err = dytc_get_version(); 10279 if (err) 10280 return err; 10281 } 10282 /* Check DYTC is enabled and supports mode setting */ 10283 if (dytc_version >= 5) { 10284 dbg_printk(TPACPI_DBG_INIT, 10285 "DYTC version %d: thermal mode available\n", dytc_version); 10286 /* 10287 * Check if MMC_GET functionality available 10288 * Version > 6 and return success from MMC_GET command 10289 */ 10290 dytc_mmc_get_available = false; 10291 if (dytc_version >= 6) { 10292 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10293 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS)) 10294 dytc_mmc_get_available = true; 10295 } 10296 /* Create platform_profile structure and register */ 10297 err = platform_profile_register(&dytc_profile); 10298 /* 10299 * If for some reason platform_profiles aren't enabled 10300 * don't quit terminally. 10301 */ 10302 if (err) 10303 return 0; 10304 10305 dytc_profile_available = true; 10306 /* Ensure initial values are correct */ 10307 dytc_profile_refresh(); 10308 } 10309 return 0; 10310 } 10311 10312 static void dytc_profile_exit(void) 10313 { 10314 if (dytc_profile_available) { 10315 dytc_profile_available = false; 10316 platform_profile_remove(); 10317 } 10318 } 10319 10320 static struct ibm_struct dytc_profile_driver_data = { 10321 .name = "dytc-profile", 10322 .exit = dytc_profile_exit, 10323 }; 10324 10325 /************************************************************************* 10326 * Keyboard language interface 10327 */ 10328 10329 struct keyboard_lang_data { 10330 const char *lang_str; 10331 int lang_code; 10332 }; 10333 10334 static const struct keyboard_lang_data keyboard_lang_data[] = { 10335 {"be", 0x080c}, 10336 {"cz", 0x0405}, 10337 {"da", 0x0406}, 10338 {"de", 0x0c07}, 10339 {"en", 0x0000}, 10340 {"es", 0x2c0a}, 10341 {"et", 0x0425}, 10342 {"fr", 0x040c}, 10343 {"fr-ch", 0x100c}, 10344 {"hu", 0x040e}, 10345 {"it", 0x0410}, 10346 {"jp", 0x0411}, 10347 {"nl", 0x0413}, 10348 {"nn", 0x0414}, 10349 {"pl", 0x0415}, 10350 {"pt", 0x0816}, 10351 {"sl", 0x041b}, 10352 {"sv", 0x081d}, 10353 {"tr", 0x041f}, 10354 }; 10355 10356 static int set_keyboard_lang_command(int command) 10357 { 10358 acpi_handle sskl_handle; 10359 int output; 10360 10361 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) { 10362 /* Platform doesn't support SSKL */ 10363 return -ENODEV; 10364 } 10365 10366 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command)) 10367 return -EIO; 10368 10369 return 0; 10370 } 10371 10372 static int get_keyboard_lang(int *output) 10373 { 10374 acpi_handle gskl_handle; 10375 int kbd_lang; 10376 10377 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) { 10378 /* Platform doesn't support GSKL */ 10379 return -ENODEV; 10380 } 10381 10382 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000)) 10383 return -EIO; 10384 10385 /* 10386 * METHOD_ERR gets returned on devices where there are no special (e.g. '=', 10387 * '(' and ')') keys which use layout dependent key-press emulation. 10388 */ 10389 if (kbd_lang & METHOD_ERR) 10390 return -ENODEV; 10391 10392 *output = kbd_lang; 10393 10394 return 0; 10395 } 10396 10397 /* sysfs keyboard language entry */ 10398 static ssize_t keyboard_lang_show(struct device *dev, 10399 struct device_attribute *attr, 10400 char *buf) 10401 { 10402 int output, err, i, len = 0; 10403 10404 err = get_keyboard_lang(&output); 10405 if (err) 10406 return err; 10407 10408 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10409 if (i) 10410 len += sysfs_emit_at(buf, len, "%s", " "); 10411 10412 if (output == keyboard_lang_data[i].lang_code) { 10413 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str); 10414 } else { 10415 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str); 10416 } 10417 } 10418 len += sysfs_emit_at(buf, len, "\n"); 10419 10420 return len; 10421 } 10422 10423 static ssize_t keyboard_lang_store(struct device *dev, 10424 struct device_attribute *attr, 10425 const char *buf, size_t count) 10426 { 10427 int err, i; 10428 bool lang_found = false; 10429 int lang_code = 0; 10430 10431 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10432 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) { 10433 lang_code = keyboard_lang_data[i].lang_code; 10434 lang_found = true; 10435 break; 10436 } 10437 } 10438 10439 if (lang_found) { 10440 lang_code = lang_code | 1 << 24; 10441 10442 /* Set language code */ 10443 err = set_keyboard_lang_command(lang_code); 10444 if (err) 10445 return err; 10446 } else { 10447 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n"); 10448 return -EINVAL; 10449 } 10450 10451 tpacpi_disclose_usertask(attr->attr.name, 10452 "keyboard language is set to %s\n", buf); 10453 10454 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang"); 10455 10456 return count; 10457 } 10458 static DEVICE_ATTR_RW(keyboard_lang); 10459 10460 static struct attribute *kbdlang_attributes[] = { 10461 &dev_attr_keyboard_lang.attr, 10462 NULL 10463 }; 10464 10465 static const struct attribute_group kbdlang_attr_group = { 10466 .attrs = kbdlang_attributes, 10467 }; 10468 10469 static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm) 10470 { 10471 int err, output; 10472 10473 err = get_keyboard_lang(&output); 10474 /* 10475 * If support isn't available (ENODEV) then don't return an error 10476 * just don't create the sysfs group. 10477 */ 10478 if (err == -ENODEV) 10479 return 0; 10480 10481 if (err) 10482 return err; 10483 10484 /* Platform supports this feature - create the sysfs file */ 10485 return sysfs_create_group(&tpacpi_pdev->dev.kobj, &kbdlang_attr_group); 10486 } 10487 10488 static void kbdlang_exit(void) 10489 { 10490 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &kbdlang_attr_group); 10491 } 10492 10493 static struct ibm_struct kbdlang_driver_data = { 10494 .name = "kbdlang", 10495 .exit = kbdlang_exit, 10496 }; 10497 10498 /************************************************************************* 10499 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN 10500 * and WLAN feature. 10501 */ 10502 #define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000 10503 #define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4) 10504 #define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8) 10505 static bool has_antennatype; 10506 static int wwan_antennatype; 10507 10508 static int dprc_command(int command, int *output) 10509 { 10510 acpi_handle dprc_handle; 10511 10512 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) { 10513 /* Platform doesn't support DPRC */ 10514 return -ENODEV; 10515 } 10516 10517 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command)) 10518 return -EIO; 10519 10520 /* 10521 * METHOD_ERR gets returned on devices where few commands are not supported 10522 * for example command to get WWAN Antenna type command is not supported on 10523 * some devices. 10524 */ 10525 if (*output & METHOD_ERR) 10526 return -ENODEV; 10527 10528 return 0; 10529 } 10530 10531 static int get_wwan_antenna(int *wwan_antennatype) 10532 { 10533 int output, err; 10534 10535 /* Get current Antenna type */ 10536 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output); 10537 if (err) 10538 return err; 10539 10540 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT) 10541 *wwan_antennatype = 1; 10542 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT) 10543 *wwan_antennatype = 2; 10544 else 10545 return -ENODEV; 10546 10547 return 0; 10548 } 10549 10550 /* sysfs wwan antenna type entry */ 10551 static ssize_t wwan_antenna_type_show(struct device *dev, 10552 struct device_attribute *attr, 10553 char *buf) 10554 { 10555 switch (wwan_antennatype) { 10556 case 1: 10557 return sysfs_emit(buf, "type a\n"); 10558 case 2: 10559 return sysfs_emit(buf, "type b\n"); 10560 default: 10561 return -ENODATA; 10562 } 10563 } 10564 static DEVICE_ATTR_RO(wwan_antenna_type); 10565 10566 static int tpacpi_dprc_init(struct ibm_init_struct *iibm) 10567 { 10568 int wwanantenna_err, err; 10569 10570 wwanantenna_err = get_wwan_antenna(&wwan_antennatype); 10571 /* 10572 * If support isn't available (ENODEV) then quit, but don't 10573 * return an error. 10574 */ 10575 if (wwanantenna_err == -ENODEV) 10576 return 0; 10577 10578 /* if there was an error return it */ 10579 if (wwanantenna_err && (wwanantenna_err != -ENODEV)) 10580 return wwanantenna_err; 10581 else if (!wwanantenna_err) 10582 has_antennatype = true; 10583 10584 if (has_antennatype) { 10585 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_wwan_antenna_type.attr); 10586 if (err) 10587 return err; 10588 } 10589 return 0; 10590 } 10591 10592 static void dprc_exit(void) 10593 { 10594 if (has_antennatype) 10595 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_wwan_antenna_type.attr); 10596 } 10597 10598 static struct ibm_struct dprc_driver_data = { 10599 .name = "dprc", 10600 .exit = dprc_exit, 10601 }; 10602 10603 /**************************************************************************** 10604 **************************************************************************** 10605 * 10606 * Infrastructure 10607 * 10608 **************************************************************************** 10609 ****************************************************************************/ 10610 10611 /* 10612 * HKEY event callout for other subdrivers go here 10613 * (yes, it is ugly, but it is quick, safe, and gets the job done 10614 */ 10615 static void tpacpi_driver_event(const unsigned int hkey_event) 10616 { 10617 if (ibm_backlight_device) { 10618 switch (hkey_event) { 10619 case TP_HKEY_EV_BRGHT_UP: 10620 case TP_HKEY_EV_BRGHT_DOWN: 10621 tpacpi_brightness_notify_change(); 10622 } 10623 } 10624 if (alsa_card) { 10625 switch (hkey_event) { 10626 case TP_HKEY_EV_VOL_UP: 10627 case TP_HKEY_EV_VOL_DOWN: 10628 case TP_HKEY_EV_VOL_MUTE: 10629 volume_alsa_notify_change(); 10630 } 10631 } 10632 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 10633 enum led_brightness brightness; 10634 10635 mutex_lock(&kbdlight_mutex); 10636 10637 /* 10638 * Check the brightness actually changed, setting the brightness 10639 * through kbdlight_set_level() also triggers this event. 10640 */ 10641 brightness = kbdlight_sysfs_get(NULL); 10642 if (kbdlight_brightness != brightness) { 10643 kbdlight_brightness = brightness; 10644 led_classdev_notify_brightness_hw_changed( 10645 &tpacpi_led_kbdlight.led_classdev, brightness); 10646 } 10647 10648 mutex_unlock(&kbdlight_mutex); 10649 } 10650 10651 if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) { 10652 lapsensor_refresh(); 10653 /* If we are already accessing DYTC then skip dytc update */ 10654 if (!atomic_add_unless(&dytc_ignore_event, -1, 0)) 10655 dytc_profile_refresh(); 10656 } 10657 10658 if (lcdshadow_dev && hkey_event == TP_HKEY_EV_PRIVACYGUARD_TOGGLE) { 10659 enum drm_privacy_screen_status old_hw_state; 10660 bool changed; 10661 10662 mutex_lock(&lcdshadow_dev->lock); 10663 old_hw_state = lcdshadow_dev->hw_state; 10664 lcdshadow_get_hw_state(lcdshadow_dev); 10665 changed = lcdshadow_dev->hw_state != old_hw_state; 10666 mutex_unlock(&lcdshadow_dev->lock); 10667 10668 if (changed) 10669 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 10670 } 10671 } 10672 10673 static void hotkey_driver_event(const unsigned int scancode) 10674 { 10675 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 10676 } 10677 10678 /* --------------------------------------------------------------------- */ 10679 10680 /* /proc support */ 10681 static struct proc_dir_entry *proc_dir; 10682 10683 /* 10684 * Module and infrastructure proble, init and exit handling 10685 */ 10686 10687 static bool force_load; 10688 10689 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 10690 static const char * __init str_supported(int is_supported) 10691 { 10692 static char text_unsupported[] __initdata = "not supported"; 10693 10694 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 10695 } 10696 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 10697 10698 static void ibm_exit(struct ibm_struct *ibm) 10699 { 10700 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 10701 10702 list_del_init(&ibm->all_drivers); 10703 10704 if (ibm->flags.acpi_notify_installed) { 10705 dbg_printk(TPACPI_DBG_EXIT, 10706 "%s: acpi_remove_notify_handler\n", ibm->name); 10707 BUG_ON(!ibm->acpi); 10708 acpi_remove_notify_handler(*ibm->acpi->handle, 10709 ibm->acpi->type, 10710 dispatch_acpi_notify); 10711 ibm->flags.acpi_notify_installed = 0; 10712 } 10713 10714 if (ibm->flags.proc_created) { 10715 dbg_printk(TPACPI_DBG_EXIT, 10716 "%s: remove_proc_entry\n", ibm->name); 10717 remove_proc_entry(ibm->name, proc_dir); 10718 ibm->flags.proc_created = 0; 10719 } 10720 10721 if (ibm->flags.acpi_driver_registered) { 10722 dbg_printk(TPACPI_DBG_EXIT, 10723 "%s: acpi_bus_unregister_driver\n", ibm->name); 10724 BUG_ON(!ibm->acpi); 10725 acpi_bus_unregister_driver(ibm->acpi->driver); 10726 kfree(ibm->acpi->driver); 10727 ibm->acpi->driver = NULL; 10728 ibm->flags.acpi_driver_registered = 0; 10729 } 10730 10731 if (ibm->flags.init_called && ibm->exit) { 10732 ibm->exit(); 10733 ibm->flags.init_called = 0; 10734 } 10735 10736 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 10737 } 10738 10739 static int __init ibm_init(struct ibm_init_struct *iibm) 10740 { 10741 int ret; 10742 struct ibm_struct *ibm = iibm->data; 10743 struct proc_dir_entry *entry; 10744 10745 BUG_ON(ibm == NULL); 10746 10747 INIT_LIST_HEAD(&ibm->all_drivers); 10748 10749 if (ibm->flags.experimental && !experimental) 10750 return 0; 10751 10752 dbg_printk(TPACPI_DBG_INIT, 10753 "probing for %s\n", ibm->name); 10754 10755 if (iibm->init) { 10756 ret = iibm->init(iibm); 10757 if (ret > 0) 10758 return 0; /* probe failed */ 10759 if (ret) 10760 return ret; 10761 10762 ibm->flags.init_called = 1; 10763 } 10764 10765 if (ibm->acpi) { 10766 if (ibm->acpi->hid) { 10767 ret = register_tpacpi_subdriver(ibm); 10768 if (ret) 10769 goto err_out; 10770 } 10771 10772 if (ibm->acpi->notify) { 10773 ret = setup_acpi_notify(ibm); 10774 if (ret == -ENODEV) { 10775 pr_notice("disabling subdriver %s\n", 10776 ibm->name); 10777 ret = 0; 10778 goto err_out; 10779 } 10780 if (ret < 0) 10781 goto err_out; 10782 } 10783 } 10784 10785 dbg_printk(TPACPI_DBG_INIT, 10786 "%s installed\n", ibm->name); 10787 10788 if (ibm->read) { 10789 umode_t mode = iibm->base_procfs_mode; 10790 10791 if (!mode) 10792 mode = S_IRUGO; 10793 if (ibm->write) 10794 mode |= S_IWUSR; 10795 entry = proc_create_data(ibm->name, mode, proc_dir, 10796 &dispatch_proc_ops, ibm); 10797 if (!entry) { 10798 pr_err("unable to create proc entry %s\n", ibm->name); 10799 ret = -ENODEV; 10800 goto err_out; 10801 } 10802 ibm->flags.proc_created = 1; 10803 } 10804 10805 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 10806 10807 return 0; 10808 10809 err_out: 10810 dbg_printk(TPACPI_DBG_INIT, 10811 "%s: at error exit path with result %d\n", 10812 ibm->name, ret); 10813 10814 ibm_exit(ibm); 10815 return (ret < 0) ? ret : 0; 10816 } 10817 10818 /* Probing */ 10819 10820 static char __init tpacpi_parse_fw_id(const char * const s, 10821 u32 *model, u16 *release) 10822 { 10823 int i; 10824 10825 if (!s || strlen(s) < 8) 10826 goto invalid; 10827 10828 for (i = 0; i < 8; i++) 10829 if (!((s[i] >= '0' && s[i] <= '9') || 10830 (s[i] >= 'A' && s[i] <= 'Z'))) 10831 goto invalid; 10832 10833 /* 10834 * Most models: xxyTkkWW (#.##c) 10835 * Ancient 570/600 and -SL lacks (#.##c) 10836 */ 10837 if (s[3] == 'T' || s[3] == 'N') { 10838 *model = TPID(s[0], s[1]); 10839 *release = TPVER(s[4], s[5]); 10840 return s[2]; 10841 10842 /* New models: xxxyTkkW (#.##c); T550 and some others */ 10843 } else if (s[4] == 'T' || s[4] == 'N') { 10844 *model = TPID3(s[0], s[1], s[2]); 10845 *release = TPVER(s[5], s[6]); 10846 return s[3]; 10847 } 10848 10849 invalid: 10850 return '\0'; 10851 } 10852 10853 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 10854 { 10855 char *ec_fw_string = (char *) private; 10856 const char *dmi_data = (const char *)dm; 10857 /* 10858 * ThinkPad Embedded Controller Program Table on newer models 10859 * 10860 * Offset | Name | Width | Description 10861 * ---------------------------------------------------- 10862 * 0x00 | Type | BYTE | 0x8C 10863 * 0x01 | Length | BYTE | 10864 * 0x02 | Handle | WORD | Varies 10865 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 10866 * 0x0A | OEM struct offset | BYTE | 0x0B 10867 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 10868 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 10869 * 0x0D | ECP version ID | STR ID | 10870 * 0x0E | ECP release date | STR ID | 10871 */ 10872 10873 /* Return if data structure not match */ 10874 if (dm->type != 140 || dm->length < 0x0F || 10875 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 10876 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 10877 dmi_data[0x0C] != 0x01) 10878 return; 10879 10880 /* fwstr is the first 8byte string */ 10881 strncpy(ec_fw_string, dmi_data + 0x0F, 8); 10882 } 10883 10884 /* returns 0 - probe ok, or < 0 - probe error. 10885 * Probe ok doesn't mean thinkpad found. 10886 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 10887 static int __must_check __init get_thinkpad_model_data( 10888 struct thinkpad_id_data *tp) 10889 { 10890 const struct dmi_device *dev = NULL; 10891 char ec_fw_string[18] = {0}; 10892 char const *s; 10893 char t; 10894 10895 if (!tp) 10896 return -EINVAL; 10897 10898 memset(tp, 0, sizeof(*tp)); 10899 10900 if (dmi_name_in_vendors("IBM")) 10901 tp->vendor = PCI_VENDOR_ID_IBM; 10902 else if (dmi_name_in_vendors("LENOVO")) 10903 tp->vendor = PCI_VENDOR_ID_LENOVO; 10904 else 10905 return 0; 10906 10907 s = dmi_get_system_info(DMI_BIOS_VERSION); 10908 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 10909 if (s && !tp->bios_version_str) 10910 return -ENOMEM; 10911 10912 /* Really ancient ThinkPad 240X will fail this, which is fine */ 10913 t = tpacpi_parse_fw_id(tp->bios_version_str, 10914 &tp->bios_model, &tp->bios_release); 10915 if (t != 'E' && t != 'C') 10916 return 0; 10917 10918 /* 10919 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 10920 * X32 or newer, all Z series; Some models must have an 10921 * up-to-date BIOS or they will not be detected. 10922 * 10923 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 10924 */ 10925 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 10926 if (sscanf(dev->name, 10927 "IBM ThinkPad Embedded Controller -[%17c", 10928 ec_fw_string) == 1) { 10929 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 10930 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 10931 break; 10932 } 10933 } 10934 10935 /* Newer ThinkPads have different EC program info table */ 10936 if (!ec_fw_string[0]) 10937 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 10938 10939 if (ec_fw_string[0]) { 10940 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 10941 if (!tp->ec_version_str) 10942 return -ENOMEM; 10943 10944 t = tpacpi_parse_fw_id(ec_fw_string, 10945 &tp->ec_model, &tp->ec_release); 10946 if (t != 'H') { 10947 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 10948 ec_fw_string); 10949 pr_notice("please report this to %s\n", TPACPI_MAIL); 10950 } 10951 } 10952 10953 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 10954 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 10955 tp->model_str = kstrdup(s, GFP_KERNEL); 10956 if (!tp->model_str) 10957 return -ENOMEM; 10958 } else { 10959 s = dmi_get_system_info(DMI_BIOS_VENDOR); 10960 if (s && !(strncasecmp(s, "Lenovo", 6))) { 10961 tp->model_str = kstrdup(s, GFP_KERNEL); 10962 if (!tp->model_str) 10963 return -ENOMEM; 10964 } 10965 } 10966 10967 s = dmi_get_system_info(DMI_PRODUCT_NAME); 10968 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 10969 if (s && !tp->nummodel_str) 10970 return -ENOMEM; 10971 10972 return 0; 10973 } 10974 10975 static int __init probe_for_thinkpad(void) 10976 { 10977 int is_thinkpad; 10978 10979 if (acpi_disabled) 10980 return -ENODEV; 10981 10982 /* It would be dangerous to run the driver in this case */ 10983 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 10984 return -ENODEV; 10985 10986 /* 10987 * Non-ancient models have better DMI tagging, but very old models 10988 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 10989 */ 10990 is_thinkpad = (thinkpad_id.model_str != NULL) || 10991 (thinkpad_id.ec_model != 0) || 10992 tpacpi_is_fw_known(); 10993 10994 /* The EC handler is required */ 10995 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 10996 if (!ec_handle) { 10997 if (is_thinkpad) 10998 pr_err("Not yet supported ThinkPad detected!\n"); 10999 return -ENODEV; 11000 } 11001 11002 if (!is_thinkpad && !force_load) 11003 return -ENODEV; 11004 11005 return 0; 11006 } 11007 11008 static void __init thinkpad_acpi_init_banner(void) 11009 { 11010 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 11011 pr_info("%s\n", TPACPI_URL); 11012 11013 pr_info("ThinkPad BIOS %s, EC %s\n", 11014 (thinkpad_id.bios_version_str) ? 11015 thinkpad_id.bios_version_str : "unknown", 11016 (thinkpad_id.ec_version_str) ? 11017 thinkpad_id.ec_version_str : "unknown"); 11018 11019 BUG_ON(!thinkpad_id.vendor); 11020 11021 if (thinkpad_id.model_str) 11022 pr_info("%s %s, model %s\n", 11023 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 11024 "IBM" : ((thinkpad_id.vendor == 11025 PCI_VENDOR_ID_LENOVO) ? 11026 "Lenovo" : "Unknown vendor"), 11027 thinkpad_id.model_str, 11028 (thinkpad_id.nummodel_str) ? 11029 thinkpad_id.nummodel_str : "unknown"); 11030 } 11031 11032 /* Module init, exit, parameters */ 11033 11034 static struct ibm_init_struct ibms_init[] __initdata = { 11035 { 11036 .data = &thinkpad_acpi_driver_data, 11037 }, 11038 { 11039 .init = hotkey_init, 11040 .data = &hotkey_driver_data, 11041 }, 11042 { 11043 .init = bluetooth_init, 11044 .data = &bluetooth_driver_data, 11045 }, 11046 { 11047 .init = wan_init, 11048 .data = &wan_driver_data, 11049 }, 11050 { 11051 .init = uwb_init, 11052 .data = &uwb_driver_data, 11053 }, 11054 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 11055 { 11056 .init = video_init, 11057 .base_procfs_mode = S_IRUSR, 11058 .data = &video_driver_data, 11059 }, 11060 #endif 11061 { 11062 .init = kbdlight_init, 11063 .data = &kbdlight_driver_data, 11064 }, 11065 { 11066 .init = light_init, 11067 .data = &light_driver_data, 11068 }, 11069 { 11070 .init = cmos_init, 11071 .data = &cmos_driver_data, 11072 }, 11073 { 11074 .init = led_init, 11075 .data = &led_driver_data, 11076 }, 11077 { 11078 .init = beep_init, 11079 .data = &beep_driver_data, 11080 }, 11081 { 11082 .init = thermal_init, 11083 .data = &thermal_driver_data, 11084 }, 11085 { 11086 .init = brightness_init, 11087 .data = &brightness_driver_data, 11088 }, 11089 { 11090 .init = volume_init, 11091 .data = &volume_driver_data, 11092 }, 11093 { 11094 .init = fan_init, 11095 .data = &fan_driver_data, 11096 }, 11097 { 11098 .init = mute_led_init, 11099 .data = &mute_led_driver_data, 11100 }, 11101 { 11102 .init = tpacpi_battery_init, 11103 .data = &battery_driver_data, 11104 }, 11105 { 11106 .init = tpacpi_lcdshadow_init, 11107 .data = &lcdshadow_driver_data, 11108 }, 11109 { 11110 .init = tpacpi_proxsensor_init, 11111 .data = &proxsensor_driver_data, 11112 }, 11113 { 11114 .init = tpacpi_dytc_profile_init, 11115 .data = &dytc_profile_driver_data, 11116 }, 11117 { 11118 .init = tpacpi_kbdlang_init, 11119 .data = &kbdlang_driver_data, 11120 }, 11121 { 11122 .init = tpacpi_dprc_init, 11123 .data = &dprc_driver_data, 11124 }, 11125 }; 11126 11127 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 11128 { 11129 unsigned int i; 11130 struct ibm_struct *ibm; 11131 11132 if (!kp || !kp->name || !val) 11133 return -EINVAL; 11134 11135 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11136 ibm = ibms_init[i].data; 11137 WARN_ON(ibm == NULL); 11138 11139 if (!ibm || !ibm->name) 11140 continue; 11141 11142 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 11143 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 11144 return -ENOSPC; 11145 strcpy(ibms_init[i].param, val); 11146 return 0; 11147 } 11148 } 11149 11150 return -EINVAL; 11151 } 11152 11153 module_param(experimental, int, 0444); 11154 MODULE_PARM_DESC(experimental, 11155 "Enables experimental features when non-zero"); 11156 11157 module_param_named(debug, dbg_level, uint, 0); 11158 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 11159 11160 module_param(force_load, bool, 0444); 11161 MODULE_PARM_DESC(force_load, 11162 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 11163 11164 module_param_named(fan_control, fan_control_allowed, bool, 0444); 11165 MODULE_PARM_DESC(fan_control, 11166 "Enables setting fan parameters features when true"); 11167 11168 module_param_named(brightness_mode, brightness_mode, uint, 0444); 11169 MODULE_PARM_DESC(brightness_mode, 11170 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 11171 11172 module_param(brightness_enable, uint, 0444); 11173 MODULE_PARM_DESC(brightness_enable, 11174 "Enables backlight control when 1, disables when 0"); 11175 11176 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 11177 module_param_named(volume_mode, volume_mode, uint, 0444); 11178 MODULE_PARM_DESC(volume_mode, 11179 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 11180 11181 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 11182 MODULE_PARM_DESC(volume_capabilities, 11183 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 11184 11185 module_param_named(volume_control, volume_control_allowed, bool, 0444); 11186 MODULE_PARM_DESC(volume_control, 11187 "Enables software override for the console audio control when true"); 11188 11189 module_param_named(software_mute, software_mute_requested, bool, 0444); 11190 MODULE_PARM_DESC(software_mute, 11191 "Request full software mute control"); 11192 11193 /* ALSA module API parameters */ 11194 module_param_named(index, alsa_index, int, 0444); 11195 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 11196 module_param_named(id, alsa_id, charp, 0444); 11197 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 11198 module_param_named(enable, alsa_enable, bool, 0444); 11199 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 11200 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 11201 11202 /* The module parameter can't be read back, that's why 0 is used here */ 11203 #define TPACPI_PARAM(feature) \ 11204 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 11205 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 11206 11207 TPACPI_PARAM(hotkey); 11208 TPACPI_PARAM(bluetooth); 11209 TPACPI_PARAM(video); 11210 TPACPI_PARAM(light); 11211 TPACPI_PARAM(cmos); 11212 TPACPI_PARAM(led); 11213 TPACPI_PARAM(beep); 11214 TPACPI_PARAM(brightness); 11215 TPACPI_PARAM(volume); 11216 TPACPI_PARAM(fan); 11217 11218 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11219 module_param(dbg_wlswemul, uint, 0444); 11220 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 11221 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 11222 MODULE_PARM_DESC(wlsw_state, 11223 "Initial state of the emulated WLSW switch"); 11224 11225 module_param(dbg_bluetoothemul, uint, 0444); 11226 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 11227 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 11228 MODULE_PARM_DESC(bluetooth_state, 11229 "Initial state of the emulated bluetooth switch"); 11230 11231 module_param(dbg_wwanemul, uint, 0444); 11232 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 11233 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 11234 MODULE_PARM_DESC(wwan_state, 11235 "Initial state of the emulated WWAN switch"); 11236 11237 module_param(dbg_uwbemul, uint, 0444); 11238 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 11239 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 11240 MODULE_PARM_DESC(uwb_state, 11241 "Initial state of the emulated UWB switch"); 11242 #endif 11243 11244 static void thinkpad_acpi_module_exit(void) 11245 { 11246 struct ibm_struct *ibm, *itmp; 11247 11248 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 11249 11250 list_for_each_entry_safe_reverse(ibm, itmp, 11251 &tpacpi_all_drivers, 11252 all_drivers) { 11253 ibm_exit(ibm); 11254 } 11255 11256 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 11257 11258 if (tpacpi_inputdev) { 11259 if (tp_features.input_device_registered) 11260 input_unregister_device(tpacpi_inputdev); 11261 else 11262 input_free_device(tpacpi_inputdev); 11263 kfree(hotkey_keycode_map); 11264 } 11265 11266 if (tpacpi_hwmon) 11267 hwmon_device_unregister(tpacpi_hwmon); 11268 11269 if (tpacpi_sensors_pdev) 11270 platform_device_unregister(tpacpi_sensors_pdev); 11271 if (tpacpi_pdev) 11272 platform_device_unregister(tpacpi_pdev); 11273 11274 if (tp_features.sensors_pdrv_attrs_registered) 11275 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); 11276 if (tp_features.platform_drv_attrs_registered) 11277 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); 11278 11279 if (tp_features.sensors_pdrv_registered) 11280 platform_driver_unregister(&tpacpi_hwmon_pdriver); 11281 11282 if (tp_features.platform_drv_registered) 11283 platform_driver_unregister(&tpacpi_pdriver); 11284 11285 if (proc_dir) 11286 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 11287 11288 if (tpacpi_wq) 11289 destroy_workqueue(tpacpi_wq); 11290 11291 kfree(thinkpad_id.bios_version_str); 11292 kfree(thinkpad_id.ec_version_str); 11293 kfree(thinkpad_id.model_str); 11294 kfree(thinkpad_id.nummodel_str); 11295 } 11296 11297 11298 static int __init thinkpad_acpi_module_init(void) 11299 { 11300 int ret, i; 11301 11302 tpacpi_lifecycle = TPACPI_LIFE_INIT; 11303 11304 /* Driver-level probe */ 11305 11306 ret = get_thinkpad_model_data(&thinkpad_id); 11307 if (ret) { 11308 pr_err("unable to get DMI data: %d\n", ret); 11309 thinkpad_acpi_module_exit(); 11310 return ret; 11311 } 11312 ret = probe_for_thinkpad(); 11313 if (ret) { 11314 thinkpad_acpi_module_exit(); 11315 return ret; 11316 } 11317 11318 /* Driver initialization */ 11319 11320 thinkpad_acpi_init_banner(); 11321 tpacpi_check_outdated_fw(); 11322 11323 TPACPI_ACPIHANDLE_INIT(ecrd); 11324 TPACPI_ACPIHANDLE_INIT(ecwr); 11325 11326 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 11327 if (!tpacpi_wq) { 11328 thinkpad_acpi_module_exit(); 11329 return -ENOMEM; 11330 } 11331 11332 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 11333 if (!proc_dir) { 11334 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 11335 thinkpad_acpi_module_exit(); 11336 return -ENODEV; 11337 } 11338 11339 ret = platform_driver_register(&tpacpi_pdriver); 11340 if (ret) { 11341 pr_err("unable to register main platform driver\n"); 11342 thinkpad_acpi_module_exit(); 11343 return ret; 11344 } 11345 tp_features.platform_drv_registered = 1; 11346 11347 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 11348 if (ret) { 11349 pr_err("unable to register hwmon platform driver\n"); 11350 thinkpad_acpi_module_exit(); 11351 return ret; 11352 } 11353 tp_features.sensors_pdrv_registered = 1; 11354 11355 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); 11356 if (!ret) { 11357 tp_features.platform_drv_attrs_registered = 1; 11358 ret = tpacpi_create_driver_attributes( 11359 &tpacpi_hwmon_pdriver.driver); 11360 } 11361 if (ret) { 11362 pr_err("unable to create sysfs driver attributes\n"); 11363 thinkpad_acpi_module_exit(); 11364 return ret; 11365 } 11366 tp_features.sensors_pdrv_attrs_registered = 1; 11367 11368 11369 /* Device initialization */ 11370 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 11371 NULL, 0); 11372 if (IS_ERR(tpacpi_pdev)) { 11373 ret = PTR_ERR(tpacpi_pdev); 11374 tpacpi_pdev = NULL; 11375 pr_err("unable to register platform device\n"); 11376 thinkpad_acpi_module_exit(); 11377 return ret; 11378 } 11379 tpacpi_sensors_pdev = platform_device_register_simple( 11380 TPACPI_HWMON_DRVR_NAME, 11381 -1, NULL, 0); 11382 if (IS_ERR(tpacpi_sensors_pdev)) { 11383 ret = PTR_ERR(tpacpi_sensors_pdev); 11384 tpacpi_sensors_pdev = NULL; 11385 pr_err("unable to register hwmon platform device\n"); 11386 thinkpad_acpi_module_exit(); 11387 return ret; 11388 } 11389 tp_features.sensors_pdev_attrs_registered = 1; 11390 tpacpi_hwmon = hwmon_device_register_with_groups( 11391 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL); 11392 11393 if (IS_ERR(tpacpi_hwmon)) { 11394 ret = PTR_ERR(tpacpi_hwmon); 11395 tpacpi_hwmon = NULL; 11396 pr_err("unable to register hwmon device\n"); 11397 thinkpad_acpi_module_exit(); 11398 return ret; 11399 } 11400 mutex_init(&tpacpi_inputdev_send_mutex); 11401 tpacpi_inputdev = input_allocate_device(); 11402 if (!tpacpi_inputdev) { 11403 thinkpad_acpi_module_exit(); 11404 return -ENOMEM; 11405 } else { 11406 /* Prepare input device, but don't register */ 11407 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 11408 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 11409 tpacpi_inputdev->id.bustype = BUS_HOST; 11410 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 11411 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 11412 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 11413 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 11414 } 11415 11416 /* Init subdriver dependencies */ 11417 tpacpi_detect_brightness_capabilities(); 11418 11419 /* Init subdrivers */ 11420 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11421 ret = ibm_init(&ibms_init[i]); 11422 if (ret >= 0 && *ibms_init[i].param) 11423 ret = ibms_init[i].data->write(ibms_init[i].param); 11424 if (ret < 0) { 11425 thinkpad_acpi_module_exit(); 11426 return ret; 11427 } 11428 } 11429 11430 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 11431 11432 ret = input_register_device(tpacpi_inputdev); 11433 if (ret < 0) { 11434 pr_err("unable to register input device\n"); 11435 thinkpad_acpi_module_exit(); 11436 return ret; 11437 } else { 11438 tp_features.input_device_registered = 1; 11439 } 11440 11441 return 0; 11442 } 11443 11444 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 11445 11446 /* 11447 * This will autoload the driver in almost every ThinkPad 11448 * in widespread use. 11449 * 11450 * Only _VERY_ old models, like the 240, 240x and 570 lack 11451 * the HKEY event interface. 11452 */ 11453 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 11454 11455 /* 11456 * DMI matching for module autoloading 11457 * 11458 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11459 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 11460 * 11461 * Only models listed in thinkwiki will be supported, so add yours 11462 * if it is not there yet. 11463 */ 11464 #define IBM_BIOS_MODULE_ALIAS(__type) \ 11465 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 11466 11467 /* Ancient thinkpad BIOSes have to be identified by 11468 * BIOS type or model number, and there are far less 11469 * BIOS types than model numbers... */ 11470 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 11471 11472 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 11473 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 11474 MODULE_DESCRIPTION(TPACPI_DESC); 11475 MODULE_VERSION(TPACPI_VERSION); 11476 MODULE_LICENSE("GPL"); 11477 11478 module_init(thinkpad_acpi_module_init); 11479 module_exit(thinkpad_acpi_module_exit); 11480