1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * thinkpad_acpi.c - ThinkPad ACPI Extras 4 * 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> 7 */ 8 9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 10 11 #define TPACPI_VERSION "0.26" 12 #define TPACPI_SYSFS_VERSION 0x030000 13 14 /* 15 * Changelog: 16 * 2007-10-20 changelog trimmed down 17 * 18 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to 19 * drivers/misc. 20 * 21 * 2006-11-22 0.13 new maintainer 22 * changelog now lives in git commit history, and will 23 * not be updated further in-file. 24 * 25 * 2005-03-17 0.11 support for 600e, 770x 26 * thanks to Jamie Lentin <lentinj@dial.pipex.com> 27 * 28 * 2005-01-16 0.9 use MODULE_VERSION 29 * thanks to Henrik Brix Andersen <brix@gentoo.org> 30 * fix parameter passing on module loading 31 * thanks to Rusty Russell <rusty@rustcorp.com.au> 32 * thanks to Jim Radford <radford@blackbean.org> 33 * 2004-11-08 0.8 fix init error case, don't return from a macro 34 * thanks to Chris Wright <chrisw@osdl.org> 35 */ 36 37 #include <linux/acpi.h> 38 #include <linux/backlight.h> 39 #include <linux/bitfield.h> 40 #include <linux/bitops.h> 41 #include <linux/delay.h> 42 #include <linux/dmi.h> 43 #include <linux/freezer.h> 44 #include <linux/hwmon.h> 45 #include <linux/hwmon-sysfs.h> 46 #include <linux/init.h> 47 #include <linux/input.h> 48 #include <linux/input/sparse-keymap.h> 49 #include <linux/jiffies.h> 50 #include <linux/kernel.h> 51 #include <linux/kthread.h> 52 #include <linux/leds.h> 53 #include <linux/list.h> 54 #include <linux/lockdep.h> 55 #include <linux/module.h> 56 #include <linux/mutex.h> 57 #include <linux/nvram.h> 58 #include <linux/pci.h> 59 #include <linux/platform_device.h> 60 #include <linux/platform_profile.h> 61 #include <linux/power_supply.h> 62 #include <linux/proc_fs.h> 63 #include <linux/rfkill.h> 64 #include <linux/sched.h> 65 #include <linux/sched/signal.h> 66 #include <linux/seq_file.h> 67 #include <linux/slab.h> 68 #include <linux/string.h> 69 #include <linux/string_helpers.h> 70 #include <linux/sysfs.h> 71 #include <linux/types.h> 72 #include <linux/uaccess.h> 73 #include <linux/units.h> 74 #include <linux/workqueue.h> 75 76 #include <acpi/battery.h> 77 #include <acpi/video.h> 78 79 #include <drm/drm_privacy_screen_driver.h> 80 81 #include <sound/control.h> 82 #include <sound/core.h> 83 #include <sound/initval.h> 84 85 #include "../dual_accel_detect.h" 86 87 /* ThinkPad CMOS commands */ 88 #define TP_CMOS_VOLUME_DOWN 0 89 #define TP_CMOS_VOLUME_UP 1 90 #define TP_CMOS_VOLUME_MUTE 2 91 #define TP_CMOS_BRIGHTNESS_UP 4 92 #define TP_CMOS_BRIGHTNESS_DOWN 5 93 #define TP_CMOS_THINKLIGHT_ON 12 94 #define TP_CMOS_THINKLIGHT_OFF 13 95 96 /* NVRAM Addresses */ 97 enum tp_nvram_addr { 98 TP_NVRAM_ADDR_HK2 = 0x57, 99 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 100 TP_NVRAM_ADDR_VIDEO = 0x59, 101 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 102 TP_NVRAM_ADDR_MIXER = 0x60, 103 }; 104 105 /* NVRAM bit masks */ 106 enum { 107 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 108 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 109 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 110 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 111 TP_NVRAM_MASK_THINKLIGHT = 0x10, 112 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 113 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 114 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 115 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 116 TP_NVRAM_MASK_MUTE = 0x40, 117 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 118 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 119 TP_NVRAM_POS_LEVEL_VOLUME = 0, 120 }; 121 122 /* Misc NVRAM-related */ 123 enum { 124 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 125 }; 126 127 /* ACPI HIDs */ 128 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 129 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 130 #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 131 #define TPACPI_ACPI_EC_HID "PNP0C09" 132 133 /* Input IDs */ 134 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 135 #define TPACPI_HKEY_INPUT_VERSION 0x4101 136 137 /* ACPI \WGSV commands */ 138 enum { 139 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 140 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 141 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 142 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 143 }; 144 145 /* TP_ACPI_WGSV_GET_STATE bits */ 146 enum { 147 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 148 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 149 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 150 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 151 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 152 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 153 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 154 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 155 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 156 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 157 }; 158 159 /* HKEY events */ 160 enum tpacpi_hkey_event_t { 161 /* Original hotkeys */ 162 TP_HKEY_EV_ORIG_KEY_START = 0x1001, /* First hotkey (FN+F1) */ 163 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 164 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 165 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 166 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 167 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 168 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 169 TP_HKEY_EV_ORIG_KEY_END = 0x1020, /* Last original hotkey code */ 170 171 /* Adaptive keyboard (2014 X1 Carbon) */ 172 TP_HKEY_EV_DFR_CHANGE_ROW = 0x1101, /* Change adaptive kbd Fn row mode */ 173 TP_HKEY_EV_DFR_S_QUICKVIEW_ROW = 0x1102, /* Set adap. kbd Fn row to function mode */ 174 TP_HKEY_EV_ADAPTIVE_KEY_START = 0x1103, /* First hotkey code on adaptive kbd */ 175 TP_HKEY_EV_ADAPTIVE_KEY_END = 0x1116, /* Last hotkey code on adaptive kbd */ 176 177 /* Extended hotkey events in 2017+ models */ 178 TP_HKEY_EV_EXTENDED_KEY_START = 0x1300, /* First extended hotkey code */ 179 TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */ 180 TP_HKEY_EV_EXTENDED_KEY_END = 0x1319, /* Last extended hotkey code using 181 * hkey -> scancode translation for 182 * compat. Later codes are entered 183 * directly in the sparse-keymap. 184 */ 185 TP_HKEY_EV_AMT_TOGGLE = 0x131a, /* Toggle AMT on/off */ 186 TP_HKEY_EV_CAMERASHUTTER_TOGGLE = 0x131b, /* Toggle Camera Shutter */ 187 TP_HKEY_EV_DOUBLETAP_TOGGLE = 0x131c, /* Toggle trackpoint doubletap on/off */ 188 TP_HKEY_EV_PROFILE_TOGGLE = 0x131f, /* Toggle platform profile in 2024 systems */ 189 TP_HKEY_EV_PROFILE_TOGGLE2 = 0x1401, /* Toggle platform profile in 2025 + systems */ 190 191 /* Reasons for waking up from S3/S4 */ 192 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 193 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 194 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 195 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 196 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 197 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 198 199 /* Auto-sleep after eject request */ 200 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 201 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 202 203 /* Misc bay events */ 204 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 205 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 206 or port replicator */ 207 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 208 dock or port replicator */ 209 /* 210 * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013 211 * when keyboard cover is attached, detached or folded onto the back 212 */ 213 TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */ 214 TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */ 215 216 /* User-interface events */ 217 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 218 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 219 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 220 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 221 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 222 * enter/leave tablet mode 223 */ 224 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 225 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 226 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 227 228 /* Key-related user-interface events */ 229 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 230 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 231 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 232 233 /* Thermal events */ 234 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 235 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 236 TP_HKEY_EV_ALARM_BAT_LIM_CHANGE = 0x6013, /* battery charge limit changed*/ 237 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 238 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 239 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ 240 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set 241 * command completed. Related to 242 * AML DYTC */ 243 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation 244 * changed. Related to AML GMTS */ 245 246 /* AC-related events */ 247 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 248 249 /* Further user-interface events */ 250 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ 251 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ 252 253 /* Misc */ 254 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 255 256 /* Misc2 */ 257 TP_HKEY_EV_TRACK_DOUBLETAP = 0x8036, /* trackpoint doubletap */ 258 }; 259 260 /**************************************************************************** 261 * Main driver 262 */ 263 264 #define TPACPI_NAME "thinkpad" 265 #define TPACPI_DESC "ThinkPad ACPI Extras" 266 #define TPACPI_FILE TPACPI_NAME "_acpi" 267 #define TPACPI_URL "http://ibm-acpi.sf.net/" 268 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 269 270 #define TPACPI_PROC_DIR "ibm" 271 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 272 #define TPACPI_DRVR_NAME TPACPI_FILE 273 #define TPACPI_DRVR_SHORTNAME "tpacpi" 274 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 275 276 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 277 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 278 279 #define TPACPI_MAX_ACPI_ARGS 3 280 281 /* Debugging printk groups */ 282 #define TPACPI_DBG_ALL 0xffff 283 #define TPACPI_DBG_DISCLOSETASK 0x8000 284 #define TPACPI_DBG_INIT 0x0001 285 #define TPACPI_DBG_EXIT 0x0002 286 #define TPACPI_DBG_RFKILL 0x0004 287 #define TPACPI_DBG_HKEY 0x0008 288 #define TPACPI_DBG_FAN 0x0010 289 #define TPACPI_DBG_BRGHT 0x0020 290 #define TPACPI_DBG_MIXER 0x0040 291 292 #define FAN_NOT_PRESENT 65535 293 294 /**************************************************************************** 295 * Driver-wide structs and misc. variables 296 */ 297 298 struct ibm_struct; 299 300 struct tp_acpi_drv_struct { 301 const struct acpi_device_id *hid; 302 struct acpi_driver *driver; 303 304 void (*notify) (struct ibm_struct *, u32); 305 acpi_handle *handle; 306 u32 type; 307 struct acpi_device *device; 308 }; 309 310 struct ibm_struct { 311 char *name; 312 313 int (*read) (struct seq_file *); 314 int (*write) (char *); 315 void (*exit) (void); 316 void (*resume) (void); 317 void (*suspend) (void); 318 void (*shutdown) (void); 319 320 struct list_head all_drivers; 321 322 struct tp_acpi_drv_struct *acpi; 323 324 struct { 325 u8 acpi_driver_registered:1; 326 u8 acpi_notify_installed:1; 327 u8 proc_created:1; 328 u8 init_called:1; 329 u8 experimental:1; 330 } flags; 331 }; 332 333 struct ibm_init_struct { 334 char param[32]; 335 336 int (*init) (struct ibm_init_struct *); 337 umode_t base_procfs_mode; 338 struct ibm_struct *data; 339 }; 340 341 /* DMI Quirks */ 342 struct quirk_entry { 343 bool btusb_bug; 344 }; 345 346 static struct quirk_entry quirk_btusb_bug = { 347 .btusb_bug = true, 348 }; 349 350 static struct { 351 u32 bluetooth:1; 352 u32 hotkey:1; 353 u32 hotkey_mask:1; 354 u32 hotkey_wlsw:1; 355 enum { 356 TP_HOTKEY_TABLET_NONE = 0, 357 TP_HOTKEY_TABLET_USES_MHKG, 358 TP_HOTKEY_TABLET_USES_GMMS, 359 } hotkey_tablet; 360 u32 kbdlight:1; 361 u32 light:1; 362 u32 light_status:1; 363 u32 bright_acpimode:1; 364 u32 bright_unkfw:1; 365 u32 wan:1; 366 u32 uwb:1; 367 u32 fan_ctrl_status_undef:1; 368 u32 second_fan:1; 369 u32 second_fan_ctl:1; 370 u32 beep_needs_two_args:1; 371 u32 mixer_no_level_control:1; 372 u32 battery_force_primary:1; 373 u32 platform_drv_registered:1; 374 u32 hotkey_poll_active:1; 375 u32 has_adaptive_kbd:1; 376 u32 kbd_lang:1; 377 u32 trackpoint_doubletap:1; 378 struct quirk_entry *quirks; 379 } tp_features; 380 381 static struct { 382 u16 hotkey_mask_ff:1; 383 u16 volume_ctrl_forbidden:1; 384 } tp_warned; 385 386 struct thinkpad_id_data { 387 unsigned int vendor; /* ThinkPad vendor: 388 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 389 390 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 391 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 392 393 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ 394 u32 ec_model; 395 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ 396 u16 ec_release; 397 398 char *model_str; /* ThinkPad T43 */ 399 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 400 }; 401 static struct thinkpad_id_data thinkpad_id; 402 403 static enum { 404 TPACPI_LIFE_INIT = 0, 405 TPACPI_LIFE_RUNNING, 406 TPACPI_LIFE_EXITING, 407 } tpacpi_lifecycle; 408 409 static int experimental; 410 static u32 dbg_level; 411 412 static struct workqueue_struct *tpacpi_wq; 413 414 enum led_status_t { 415 TPACPI_LED_OFF = 0, 416 TPACPI_LED_ON, 417 TPACPI_LED_BLINK, 418 }; 419 420 /* tpacpi LED class */ 421 struct tpacpi_led_classdev { 422 struct led_classdev led_classdev; 423 int led; 424 }; 425 426 /* brightness level capabilities */ 427 static unsigned int bright_maxlvl; /* 0 = unknown */ 428 429 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 430 static int dbg_wlswemul; 431 static bool tpacpi_wlsw_emulstate; 432 static int dbg_bluetoothemul; 433 static bool tpacpi_bluetooth_emulstate; 434 static int dbg_wwanemul; 435 static bool tpacpi_wwan_emulstate; 436 static int dbg_uwbemul; 437 static bool tpacpi_uwb_emulstate; 438 #endif 439 440 441 /************************************************************************* 442 * Debugging helpers 443 */ 444 445 #define dbg_printk(a_dbg_level, format, arg...) \ 446 do { \ 447 if (dbg_level & (a_dbg_level)) \ 448 printk(KERN_DEBUG pr_fmt("%s: " format), \ 449 __func__, ##arg); \ 450 } while (0) 451 452 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 453 #define vdbg_printk dbg_printk 454 static const char *str_supported(int is_supported); 455 #else 456 static inline const char *str_supported(int is_supported) { return ""; } 457 #define vdbg_printk(a_dbg_level, format, arg...) \ 458 do { if (0) no_printk(format, ##arg); } while (0) 459 #endif 460 461 static void tpacpi_log_usertask(const char * const what) 462 { 463 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 464 what, task_tgid_vnr(current)); 465 } 466 467 #define tpacpi_disclose_usertask(what, format, arg...) \ 468 do { \ 469 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 470 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 471 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 472 what, task_tgid_vnr(current), ## arg); \ 473 } \ 474 } while (0) 475 476 /* 477 * Quirk handling helpers 478 * 479 * ThinkPad IDs and versions seen in the field so far are 480 * two or three characters from the set [0-9A-Z], i.e. base 36. 481 * 482 * We use values well outside that range as specials. 483 */ 484 485 #define TPACPI_MATCH_ANY 0xffffffffU 486 #define TPACPI_MATCH_ANY_VERSION 0xffffU 487 #define TPACPI_MATCH_UNKNOWN 0U 488 489 /* TPID('1', 'Y') == 0x3159 */ 490 #define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) 491 #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) 492 #define TPVER TPID 493 494 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 495 { .vendor = PCI_VENDOR_ID_IBM, \ 496 .bios = TPID(__id1, __id2), \ 497 .ec = TPACPI_MATCH_ANY, \ 498 .quirks = (__quirk) } 499 500 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 501 { .vendor = PCI_VENDOR_ID_LENOVO, \ 502 .bios = TPID(__id1, __id2), \ 503 .ec = TPACPI_MATCH_ANY, \ 504 .quirks = (__quirk) } 505 506 #define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ 507 { .vendor = PCI_VENDOR_ID_LENOVO, \ 508 .bios = TPID3(__id1, __id2, __id3), \ 509 .ec = TPACPI_MATCH_ANY, \ 510 .quirks = (__quirk) } 511 512 #define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ 513 { .vendor = PCI_VENDOR_ID_IBM, \ 514 .bios = TPACPI_MATCH_ANY, \ 515 .ec = TPID(__id1, __id2), \ 516 .quirks = (__quirk) } 517 518 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 519 { .vendor = PCI_VENDOR_ID_LENOVO, \ 520 .bios = TPACPI_MATCH_ANY, \ 521 .ec = TPID(__id1, __id2), \ 522 .quirks = (__quirk) } 523 524 struct tpacpi_quirk { 525 unsigned int vendor; 526 u32 bios; 527 u32 ec; 528 unsigned long quirks; 529 }; 530 531 /** 532 * tpacpi_check_quirks() - search BIOS/EC version on a list 533 * @qlist: array of &struct tpacpi_quirk 534 * @qlist_size: number of elements in @qlist 535 * 536 * Iterates over a quirks list until one is found that matches the 537 * ThinkPad's vendor, BIOS and EC model. 538 * 539 * Returns: %0 if nothing matches, otherwise returns the quirks field of 540 * the matching &struct tpacpi_quirk entry. 541 * 542 * The match criteria is: vendor, ec and bios must match. 543 */ 544 static unsigned long __init tpacpi_check_quirks( 545 const struct tpacpi_quirk *qlist, 546 unsigned int qlist_size) 547 { 548 while (qlist_size) { 549 if ((qlist->vendor == thinkpad_id.vendor || 550 qlist->vendor == TPACPI_MATCH_ANY) && 551 (qlist->bios == thinkpad_id.bios_model || 552 qlist->bios == TPACPI_MATCH_ANY) && 553 (qlist->ec == thinkpad_id.ec_model || 554 qlist->ec == TPACPI_MATCH_ANY)) 555 return qlist->quirks; 556 557 qlist_size--; 558 qlist++; 559 } 560 return 0; 561 } 562 563 static __always_inline bool __pure __init tpacpi_is_lenovo(void) 564 { 565 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 566 } 567 568 static __always_inline bool __pure __init tpacpi_is_ibm(void) 569 { 570 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 571 } 572 573 /**************************************************************************** 574 **************************************************************************** 575 * 576 * ACPI Helpers and device model 577 * 578 **************************************************************************** 579 ****************************************************************************/ 580 581 /************************************************************************* 582 * ACPI basic handles 583 */ 584 585 static acpi_handle root_handle; 586 static acpi_handle ec_handle; 587 588 #define TPACPI_HANDLE(object, parent, paths...) \ 589 static acpi_handle object##_handle; \ 590 static const acpi_handle * const object##_parent __initconst = \ 591 &parent##_handle; \ 592 static char *object##_paths[] __initdata = { paths } 593 594 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 595 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 596 597 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 598 /* T4x, X31, X40 */ 599 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 600 "\\CMS", /* R40, R40e */ 601 ); /* all others */ 602 603 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 604 "^HKEY", /* R30, R31 */ 605 "HKEY", /* all others */ 606 ); /* 570 */ 607 608 /************************************************************************* 609 * ACPI helpers 610 */ 611 612 static int acpi_evalf(acpi_handle handle, 613 int *res, char *method, char *fmt, ...) 614 { 615 char *fmt0 = fmt; 616 struct acpi_object_list params; 617 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 618 struct acpi_buffer result, *resultp; 619 union acpi_object out_obj; 620 acpi_status status; 621 va_list ap; 622 char res_type; 623 int success; 624 int quiet; 625 626 if (!*fmt) { 627 pr_err("acpi_evalf() called with empty format\n"); 628 return 0; 629 } 630 631 if (*fmt == 'q') { 632 quiet = 1; 633 fmt++; 634 } else 635 quiet = 0; 636 637 res_type = *(fmt++); 638 639 params.count = 0; 640 params.pointer = &in_objs[0]; 641 642 va_start(ap, fmt); 643 while (*fmt) { 644 char c = *(fmt++); 645 switch (c) { 646 case 'd': /* int */ 647 in_objs[params.count].integer.value = va_arg(ap, int); 648 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 649 break; 650 /* add more types as needed */ 651 default: 652 pr_err("acpi_evalf() called with invalid format character '%c'\n", 653 c); 654 va_end(ap); 655 return 0; 656 } 657 } 658 va_end(ap); 659 660 if (res_type != 'v') { 661 result.length = sizeof(out_obj); 662 result.pointer = &out_obj; 663 resultp = &result; 664 } else 665 resultp = NULL; 666 667 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 668 669 switch (res_type) { 670 case 'd': /* int */ 671 success = (status == AE_OK && 672 out_obj.type == ACPI_TYPE_INTEGER); 673 if (success && res) 674 *res = out_obj.integer.value; 675 break; 676 case 'v': /* void */ 677 success = status == AE_OK; 678 break; 679 /* add more types as needed */ 680 default: 681 pr_err("acpi_evalf() called with invalid format character '%c'\n", 682 res_type); 683 return 0; 684 } 685 686 if (!success && !quiet) 687 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 688 method, fmt0, acpi_format_exception(status)); 689 690 return success; 691 } 692 693 static int acpi_ec_read(int i, u8 *p) 694 { 695 int v; 696 697 if (ecrd_handle) { 698 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 699 return 0; 700 *p = v; 701 } else { 702 if (ec_read(i, p) < 0) 703 return 0; 704 } 705 706 return 1; 707 } 708 709 static int acpi_ec_write(int i, u8 v) 710 { 711 if (ecwr_handle) { 712 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 713 return 0; 714 } else { 715 if (ec_write(i, v) < 0) 716 return 0; 717 } 718 719 return 1; 720 } 721 722 static int issue_thinkpad_cmos_command(int cmos_cmd) 723 { 724 if (!cmos_handle) 725 return -ENXIO; 726 727 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 728 return -EIO; 729 730 return 0; 731 } 732 733 /************************************************************************* 734 * ACPI device model 735 */ 736 737 #define TPACPI_ACPIHANDLE_INIT(object) \ 738 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 739 object##_paths, ARRAY_SIZE(object##_paths)) 740 741 static void __init drv_acpi_handle_init(const char *name, 742 acpi_handle *handle, const acpi_handle parent, 743 char **paths, const int num_paths) 744 { 745 int i; 746 acpi_status status; 747 748 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 749 name); 750 751 for (i = 0; i < num_paths; i++) { 752 status = acpi_get_handle(parent, paths[i], handle); 753 if (ACPI_SUCCESS(status)) { 754 dbg_printk(TPACPI_DBG_INIT, 755 "Found ACPI handle %s for %s\n", 756 paths[i], name); 757 return; 758 } 759 } 760 761 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 762 name); 763 *handle = NULL; 764 } 765 766 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 767 u32 level, void *context, void **return_value) 768 { 769 if (!strcmp(context, "video")) { 770 struct acpi_device *dev = acpi_fetch_acpi_dev(handle); 771 772 if (!dev || strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 773 return AE_OK; 774 } 775 776 *(acpi_handle *)return_value = handle; 777 778 return AE_CTRL_TERMINATE; 779 } 780 781 static void __init tpacpi_acpi_handle_locate(const char *name, 782 const char *hid, 783 acpi_handle *handle) 784 { 785 acpi_status status; 786 acpi_handle device_found; 787 788 BUG_ON(!name || !handle); 789 vdbg_printk(TPACPI_DBG_INIT, 790 "trying to locate ACPI handle for %s, using HID %s\n", 791 name, hid ? hid : "NULL"); 792 793 memset(&device_found, 0, sizeof(device_found)); 794 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 795 (void *)name, &device_found); 796 797 *handle = NULL; 798 799 if (ACPI_SUCCESS(status)) { 800 *handle = device_found; 801 dbg_printk(TPACPI_DBG_INIT, 802 "Found ACPI handle for %s\n", name); 803 } else { 804 vdbg_printk(TPACPI_DBG_INIT, 805 "Could not locate an ACPI handle for %s: %s\n", 806 name, acpi_format_exception(status)); 807 } 808 } 809 810 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 811 { 812 struct ibm_struct *ibm = data; 813 814 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 815 return; 816 817 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 818 return; 819 820 ibm->acpi->notify(ibm, event); 821 } 822 823 static int __init setup_acpi_notify(struct ibm_struct *ibm) 824 { 825 acpi_status status; 826 827 BUG_ON(!ibm->acpi); 828 829 if (!*ibm->acpi->handle) 830 return 0; 831 832 vdbg_printk(TPACPI_DBG_INIT, 833 "setting up ACPI notify for %s\n", ibm->name); 834 835 ibm->acpi->device = acpi_fetch_acpi_dev(*ibm->acpi->handle); 836 if (!ibm->acpi->device) { 837 pr_err("acpi_fetch_acpi_dev(%s) failed\n", ibm->name); 838 return -ENODEV; 839 } 840 841 ibm->acpi->device->driver_data = ibm; 842 scnprintf(acpi_device_class(ibm->acpi->device), 843 sizeof(acpi_device_class(ibm->acpi->device)), 844 "%s/%s", TPACPI_ACPI_EVENT_PREFIX, ibm->name); 845 846 status = acpi_install_notify_handler(*ibm->acpi->handle, 847 ibm->acpi->type, dispatch_acpi_notify, ibm); 848 if (ACPI_FAILURE(status)) { 849 if (status == AE_ALREADY_EXISTS) { 850 pr_notice("another device driver is already handling %s events\n", 851 ibm->name); 852 } else { 853 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 854 ibm->name, acpi_format_exception(status)); 855 } 856 return -ENODEV; 857 } 858 ibm->flags.acpi_notify_installed = 1; 859 return 0; 860 } 861 862 static int __init tpacpi_device_add(struct acpi_device *device) 863 { 864 return 0; 865 } 866 867 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 868 { 869 int rc; 870 871 dbg_printk(TPACPI_DBG_INIT, 872 "registering %s as an ACPI driver\n", ibm->name); 873 874 BUG_ON(!ibm->acpi); 875 876 ibm->acpi->driver = kzalloc_obj(struct acpi_driver); 877 if (!ibm->acpi->driver) { 878 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 879 return -ENOMEM; 880 } 881 882 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 883 ibm->acpi->driver->ids = ibm->acpi->hid; 884 885 ibm->acpi->driver->ops.add = &tpacpi_device_add; 886 887 rc = acpi_bus_register_driver(ibm->acpi->driver); 888 if (rc < 0) { 889 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 890 ibm->name, rc); 891 kfree(ibm->acpi->driver); 892 ibm->acpi->driver = NULL; 893 } else if (!rc) 894 ibm->flags.acpi_driver_registered = 1; 895 896 return rc; 897 } 898 899 900 /**************************************************************************** 901 **************************************************************************** 902 * 903 * Procfs Helpers 904 * 905 **************************************************************************** 906 ****************************************************************************/ 907 908 static int dispatch_proc_show(struct seq_file *m, void *v) 909 { 910 struct ibm_struct *ibm = m->private; 911 912 if (!ibm || !ibm->read) 913 return -EINVAL; 914 return ibm->read(m); 915 } 916 917 static int dispatch_proc_open(struct inode *inode, struct file *file) 918 { 919 return single_open(file, dispatch_proc_show, pde_data(inode)); 920 } 921 922 static ssize_t dispatch_proc_write(struct file *file, 923 const char __user *userbuf, 924 size_t count, loff_t *pos) 925 { 926 struct ibm_struct *ibm = pde_data(file_inode(file)); 927 char *kernbuf; 928 int ret; 929 930 if (!ibm || !ibm->write) 931 return -EINVAL; 932 if (count > PAGE_SIZE - 1) 933 return -EINVAL; 934 935 kernbuf = memdup_user_nul(userbuf, count); 936 if (IS_ERR(kernbuf)) 937 return PTR_ERR(kernbuf); 938 ret = ibm->write(kernbuf); 939 if (ret == 0) 940 ret = count; 941 942 kfree(kernbuf); 943 944 return ret; 945 } 946 947 static const struct proc_ops dispatch_proc_ops = { 948 .proc_open = dispatch_proc_open, 949 .proc_read = seq_read, 950 .proc_lseek = seq_lseek, 951 .proc_release = single_release, 952 .proc_write = dispatch_proc_write, 953 }; 954 955 /**************************************************************************** 956 **************************************************************************** 957 * 958 * Device model: input, hwmon and platform 959 * 960 **************************************************************************** 961 ****************************************************************************/ 962 963 static struct platform_device *tpacpi_pdev; 964 static struct platform_device *tpacpi_sensors_pdev; 965 static struct device *tpacpi_hwmon; 966 static struct device *tpacpi_pprof; 967 static struct input_dev *tpacpi_inputdev; 968 static struct mutex tpacpi_inputdev_send_mutex; 969 static LIST_HEAD(tpacpi_all_drivers); 970 971 #ifdef CONFIG_PM_SLEEP 972 static int tpacpi_suspend_handler(struct device *dev) 973 { 974 struct ibm_struct *ibm, *itmp; 975 976 list_for_each_entry_safe(ibm, itmp, 977 &tpacpi_all_drivers, 978 all_drivers) { 979 if (ibm->suspend) 980 (ibm->suspend)(); 981 } 982 983 return 0; 984 } 985 986 static int tpacpi_resume_handler(struct device *dev) 987 { 988 struct ibm_struct *ibm, *itmp; 989 990 list_for_each_entry_safe(ibm, itmp, 991 &tpacpi_all_drivers, 992 all_drivers) { 993 if (ibm->resume) 994 (ibm->resume)(); 995 } 996 997 return 0; 998 } 999 #endif 1000 1001 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 1002 tpacpi_suspend_handler, tpacpi_resume_handler); 1003 1004 static void tpacpi_shutdown_handler(struct platform_device *pdev) 1005 { 1006 struct ibm_struct *ibm, *itmp; 1007 1008 list_for_each_entry_safe(ibm, itmp, 1009 &tpacpi_all_drivers, 1010 all_drivers) { 1011 if (ibm->shutdown) 1012 (ibm->shutdown)(); 1013 } 1014 } 1015 1016 /************************************************************************* 1017 * sysfs support helpers 1018 */ 1019 1020 static int parse_strtoul(const char *buf, 1021 unsigned long max, unsigned long *value) 1022 { 1023 char *endp; 1024 1025 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1026 endp = skip_spaces(endp); 1027 if (*endp || *value > max) 1028 return -EINVAL; 1029 1030 return 0; 1031 } 1032 1033 static void tpacpi_disable_brightness_delay(void) 1034 { 1035 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1036 pr_notice("ACPI backlight control delay disabled\n"); 1037 } 1038 1039 static void printk_deprecated_attribute(const char * const what, 1040 const char * const details) 1041 { 1042 tpacpi_log_usertask("deprecated sysfs attribute"); 1043 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", 1044 what, details); 1045 } 1046 1047 /************************************************************************* 1048 * rfkill and radio control support helpers 1049 */ 1050 1051 /* 1052 * ThinkPad-ACPI firmware handling model: 1053 * 1054 * WLSW (master wireless switch) is event-driven, and is common to all 1055 * firmware-controlled radios. It cannot be controlled, just monitored, 1056 * as expected. It overrides all radio state in firmware 1057 * 1058 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1059 * (TODO: verify how WLSW interacts with the returned radio state). 1060 * 1061 * The only time there are shadow radio state changes, is when 1062 * masked-off hotkeys are used. 1063 */ 1064 1065 /* 1066 * Internal driver API for radio state: 1067 * 1068 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1069 * bool: true means radio blocked (off) 1070 */ 1071 enum tpacpi_rfkill_state { 1072 TPACPI_RFK_RADIO_OFF = 0, 1073 TPACPI_RFK_RADIO_ON 1074 }; 1075 1076 /* rfkill switches */ 1077 enum tpacpi_rfk_id { 1078 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1079 TPACPI_RFK_WWAN_SW_ID, 1080 TPACPI_RFK_UWB_SW_ID, 1081 TPACPI_RFK_SW_MAX 1082 }; 1083 1084 static const char *tpacpi_rfkill_names[] = { 1085 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1086 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1087 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1088 [TPACPI_RFK_SW_MAX] = NULL 1089 }; 1090 1091 /* ThinkPad-ACPI rfkill subdriver */ 1092 struct tpacpi_rfk { 1093 struct rfkill *rfkill; 1094 enum tpacpi_rfk_id id; 1095 const struct tpacpi_rfk_ops *ops; 1096 }; 1097 1098 struct tpacpi_rfk_ops { 1099 /* firmware interface */ 1100 int (*get_status)(void); 1101 int (*set_status)(const enum tpacpi_rfkill_state); 1102 }; 1103 1104 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1105 1106 /* Query FW and update rfkill sw state for a given rfkill switch */ 1107 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1108 { 1109 int status; 1110 1111 if (!tp_rfk) 1112 return -ENODEV; 1113 1114 status = (tp_rfk->ops->get_status)(); 1115 if (status < 0) 1116 return status; 1117 1118 rfkill_set_sw_state(tp_rfk->rfkill, 1119 (status == TPACPI_RFK_RADIO_OFF)); 1120 1121 return status; 1122 } 1123 1124 /* 1125 * Sync the HW-blocking state of all rfkill switches, 1126 * do notice it causes the rfkill core to schedule uevents 1127 */ 1128 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1129 { 1130 unsigned int i; 1131 struct tpacpi_rfk *tp_rfk; 1132 1133 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1134 tp_rfk = tpacpi_rfkill_switches[i]; 1135 if (tp_rfk) { 1136 if (rfkill_set_hw_state(tp_rfk->rfkill, 1137 blocked)) { 1138 /* ignore -- we track sw block */ 1139 } 1140 } 1141 } 1142 } 1143 1144 /* Call to get the WLSW state from the firmware */ 1145 static int hotkey_get_wlsw(void); 1146 1147 /* Call to query WLSW state and update all rfkill switches */ 1148 static bool tpacpi_rfk_check_hwblock_state(void) 1149 { 1150 int res = hotkey_get_wlsw(); 1151 int hw_blocked; 1152 1153 /* When unknown or unsupported, we have to assume it is unblocked */ 1154 if (res < 0) 1155 return false; 1156 1157 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1158 tpacpi_rfk_update_hwblock_state(hw_blocked); 1159 1160 return hw_blocked; 1161 } 1162 1163 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1164 { 1165 struct tpacpi_rfk *tp_rfk = data; 1166 int res; 1167 1168 dbg_printk(TPACPI_DBG_RFKILL, 1169 "request to change radio state to %s\n", 1170 blocked ? "blocked" : "unblocked"); 1171 1172 /* try to set radio state */ 1173 res = (tp_rfk->ops->set_status)(blocked ? 1174 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1175 1176 /* and update the rfkill core with whatever the FW really did */ 1177 tpacpi_rfk_update_swstate(tp_rfk); 1178 1179 return (res < 0) ? res : 0; 1180 } 1181 1182 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1183 .set_block = tpacpi_rfk_hook_set_block, 1184 }; 1185 1186 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1187 const struct tpacpi_rfk_ops *tp_rfkops, 1188 const enum rfkill_type rfktype, 1189 const char *name, 1190 const bool set_default) 1191 { 1192 struct tpacpi_rfk *atp_rfk; 1193 int res; 1194 bool sw_state = false; 1195 bool hw_state; 1196 int sw_status; 1197 1198 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1199 1200 atp_rfk = kzalloc_obj(struct tpacpi_rfk); 1201 if (atp_rfk) 1202 atp_rfk->rfkill = rfkill_alloc(name, 1203 &tpacpi_pdev->dev, 1204 rfktype, 1205 &tpacpi_rfk_rfkill_ops, 1206 atp_rfk); 1207 if (!atp_rfk || !atp_rfk->rfkill) { 1208 pr_err("failed to allocate memory for rfkill class\n"); 1209 kfree(atp_rfk); 1210 return -ENOMEM; 1211 } 1212 1213 atp_rfk->id = id; 1214 atp_rfk->ops = tp_rfkops; 1215 1216 sw_status = (tp_rfkops->get_status)(); 1217 if (sw_status < 0) { 1218 pr_err("failed to read initial state for %s, error %d\n", 1219 name, sw_status); 1220 } else { 1221 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1222 if (set_default) { 1223 /* try to keep the initial state, since we ask the 1224 * firmware to preserve it across S5 in NVRAM */ 1225 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1226 } 1227 } 1228 hw_state = tpacpi_rfk_check_hwblock_state(); 1229 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1230 1231 res = rfkill_register(atp_rfk->rfkill); 1232 if (res < 0) { 1233 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1234 rfkill_destroy(atp_rfk->rfkill); 1235 kfree(atp_rfk); 1236 return res; 1237 } 1238 1239 tpacpi_rfkill_switches[id] = atp_rfk; 1240 1241 pr_info("rfkill switch %s: radio is %sblocked\n", 1242 name, (sw_state || hw_state) ? "" : "un"); 1243 return 0; 1244 } 1245 1246 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1247 { 1248 struct tpacpi_rfk *tp_rfk; 1249 1250 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1251 1252 tp_rfk = tpacpi_rfkill_switches[id]; 1253 if (tp_rfk) { 1254 rfkill_unregister(tp_rfk->rfkill); 1255 rfkill_destroy(tp_rfk->rfkill); 1256 tpacpi_rfkill_switches[id] = NULL; 1257 kfree(tp_rfk); 1258 } 1259 } 1260 1261 static void printk_deprecated_rfkill_attribute(const char * const what) 1262 { 1263 printk_deprecated_attribute(what, 1264 "Please switch to generic rfkill before year 2010"); 1265 } 1266 1267 /* sysfs <radio> enable ------------------------------------------------ */ 1268 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1269 struct device_attribute *attr, 1270 char *buf) 1271 { 1272 int status; 1273 1274 printk_deprecated_rfkill_attribute(attr->attr.name); 1275 1276 /* This is in the ABI... */ 1277 if (tpacpi_rfk_check_hwblock_state()) { 1278 status = TPACPI_RFK_RADIO_OFF; 1279 } else { 1280 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1281 if (status < 0) 1282 return status; 1283 } 1284 1285 return sysfs_emit(buf, "%d\n", 1286 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1287 } 1288 1289 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1290 struct device_attribute *attr, 1291 const char *buf, size_t count) 1292 { 1293 unsigned long t; 1294 int res; 1295 1296 printk_deprecated_rfkill_attribute(attr->attr.name); 1297 1298 if (parse_strtoul(buf, 1, &t)) 1299 return -EINVAL; 1300 1301 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1302 1303 /* This is in the ABI... */ 1304 if (tpacpi_rfk_check_hwblock_state() && !!t) 1305 return -EPERM; 1306 1307 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1308 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1309 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1310 1311 return (res < 0) ? res : count; 1312 } 1313 1314 /* procfs -------------------------------------------------------------- */ 1315 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1316 { 1317 if (id >= TPACPI_RFK_SW_MAX) 1318 seq_printf(m, "status:\t\tnot supported\n"); 1319 else { 1320 int status; 1321 1322 /* This is in the ABI... */ 1323 if (tpacpi_rfk_check_hwblock_state()) { 1324 status = TPACPI_RFK_RADIO_OFF; 1325 } else { 1326 status = tpacpi_rfk_update_swstate( 1327 tpacpi_rfkill_switches[id]); 1328 if (status < 0) 1329 return status; 1330 } 1331 1332 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status == TPACPI_RFK_RADIO_ON)); 1333 seq_printf(m, "commands:\tenable, disable\n"); 1334 } 1335 1336 return 0; 1337 } 1338 1339 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1340 { 1341 char *cmd; 1342 int status = -1; 1343 int res = 0; 1344 1345 if (id >= TPACPI_RFK_SW_MAX) 1346 return -ENODEV; 1347 1348 while ((cmd = strsep(&buf, ","))) { 1349 if (strstarts(cmd, "enable")) 1350 status = TPACPI_RFK_RADIO_ON; 1351 else if (strstarts(cmd, "disable")) 1352 status = TPACPI_RFK_RADIO_OFF; 1353 else 1354 return -EINVAL; 1355 } 1356 1357 if (status != -1) { 1358 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1359 str_enable_disable(status == TPACPI_RFK_RADIO_ON), 1360 tpacpi_rfkill_names[id]); 1361 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1362 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1363 } 1364 1365 return res; 1366 } 1367 1368 /************************************************************************* 1369 * thinkpad-acpi driver attributes 1370 */ 1371 1372 /* interface_version --------------------------------------------------- */ 1373 static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1374 { 1375 return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION); 1376 } 1377 static DRIVER_ATTR_RO(interface_version); 1378 1379 /* debug_level --------------------------------------------------------- */ 1380 static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1381 { 1382 return sysfs_emit(buf, "0x%04x\n", dbg_level); 1383 } 1384 1385 static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1386 size_t count) 1387 { 1388 unsigned long t; 1389 1390 if (parse_strtoul(buf, 0xffff, &t)) 1391 return -EINVAL; 1392 1393 dbg_level = t; 1394 1395 return count; 1396 } 1397 static DRIVER_ATTR_RW(debug_level); 1398 1399 /* version ------------------------------------------------------------- */ 1400 static ssize_t version_show(struct device_driver *drv, char *buf) 1401 { 1402 return sysfs_emit(buf, "%s v%s\n", 1403 TPACPI_DESC, TPACPI_VERSION); 1404 } 1405 static DRIVER_ATTR_RO(version); 1406 1407 /* --------------------------------------------------------------------- */ 1408 1409 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1410 1411 /* wlsw_emulstate ------------------------------------------------------ */ 1412 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1413 { 1414 return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate); 1415 } 1416 1417 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1418 size_t count) 1419 { 1420 unsigned long t; 1421 1422 if (parse_strtoul(buf, 1, &t)) 1423 return -EINVAL; 1424 1425 if (tpacpi_wlsw_emulstate != !!t) { 1426 tpacpi_wlsw_emulstate = !!t; 1427 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1428 } 1429 1430 return count; 1431 } 1432 static DRIVER_ATTR_RW(wlsw_emulstate); 1433 1434 /* bluetooth_emulstate ------------------------------------------------- */ 1435 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1436 { 1437 return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate); 1438 } 1439 1440 static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1441 const char *buf, size_t count) 1442 { 1443 unsigned long t; 1444 1445 if (parse_strtoul(buf, 1, &t)) 1446 return -EINVAL; 1447 1448 tpacpi_bluetooth_emulstate = !!t; 1449 1450 return count; 1451 } 1452 static DRIVER_ATTR_RW(bluetooth_emulstate); 1453 1454 /* wwan_emulstate ------------------------------------------------- */ 1455 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1456 { 1457 return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate); 1458 } 1459 1460 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1461 size_t count) 1462 { 1463 unsigned long t; 1464 1465 if (parse_strtoul(buf, 1, &t)) 1466 return -EINVAL; 1467 1468 tpacpi_wwan_emulstate = !!t; 1469 1470 return count; 1471 } 1472 static DRIVER_ATTR_RW(wwan_emulstate); 1473 1474 /* uwb_emulstate ------------------------------------------------- */ 1475 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1476 { 1477 return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate); 1478 } 1479 1480 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1481 size_t count) 1482 { 1483 unsigned long t; 1484 1485 if (parse_strtoul(buf, 1, &t)) 1486 return -EINVAL; 1487 1488 tpacpi_uwb_emulstate = !!t; 1489 1490 return count; 1491 } 1492 static DRIVER_ATTR_RW(uwb_emulstate); 1493 #endif 1494 1495 /************************************************************************* 1496 * Firmware Data 1497 */ 1498 1499 /* 1500 * Table of recommended minimum BIOS versions 1501 * 1502 * Reasons for listing: 1503 * 1. Stable BIOS, listed because the unknown amount of 1504 * bugs and bad ACPI behaviour on older versions 1505 * 1506 * 2. BIOS or EC fw with known bugs that trigger on Linux 1507 * 1508 * 3. BIOS with known reduced functionality in older versions 1509 * 1510 * We recommend the latest BIOS and EC version. 1511 * We only support the latest BIOS and EC fw version as a rule. 1512 * 1513 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1514 * Information from users in ThinkWiki 1515 * 1516 * WARNING: we use this table also to detect that the machine is 1517 * a ThinkPad in some cases, so don't remove entries lightly. 1518 */ 1519 1520 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1521 { .vendor = (__v), \ 1522 .bios = TPID(__id1, __id2), \ 1523 .ec = TPACPI_MATCH_ANY, \ 1524 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ 1525 | TPVER(__bv1, __bv2) } 1526 1527 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1528 __eid, __ev1, __ev2) \ 1529 { .vendor = (__v), \ 1530 .bios = TPID(__bid1, __bid2), \ 1531 .ec = __eid, \ 1532 .quirks = TPVER(__ev1, __ev2) << 16 \ 1533 | TPVER(__bv1, __bv2) } 1534 1535 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1536 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1537 1538 /* Outdated IBM BIOSes often lack the EC id string */ 1539 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1540 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1541 __bv1, __bv2, TPID(__id1, __id2), \ 1542 __ev1, __ev2), \ 1543 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1544 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1545 __ev1, __ev2) 1546 1547 /* Outdated IBM BIOSes often lack the EC id string */ 1548 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1549 __eid1, __eid2, __ev1, __ev2) \ 1550 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1551 __bv1, __bv2, TPID(__eid1, __eid2), \ 1552 __ev1, __ev2), \ 1553 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1554 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1555 __ev1, __ev2) 1556 1557 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1558 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1559 1560 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1561 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1562 __bv1, __bv2, TPID(__id1, __id2), \ 1563 __ev1, __ev2) 1564 1565 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1566 __eid1, __eid2, __ev1, __ev2) \ 1567 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1568 __bv1, __bv2, TPID(__eid1, __eid2), \ 1569 __ev1, __ev2) 1570 1571 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1572 /* Numeric models ------------------ */ 1573 /* FW MODEL BIOS VERS */ 1574 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1575 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1576 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1577 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1578 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1579 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1580 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1581 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1582 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1583 1584 /* A-series ------------------------- */ 1585 /* FW MODEL BIOS VERS EC VERS */ 1586 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1587 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1588 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1589 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1590 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1591 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1592 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1593 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1594 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1595 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1596 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1597 1598 /* G-series ------------------------- */ 1599 /* FW MODEL BIOS VERS */ 1600 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1601 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1602 1603 /* R-series, T-series --------------- */ 1604 /* FW MODEL BIOS VERS EC VERS */ 1605 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1606 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1607 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1608 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1609 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1610 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1611 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1612 T40/p, T41/p, T42/p (1) */ 1613 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1614 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1615 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1616 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1617 1618 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1619 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1620 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1621 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1622 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1623 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1624 1625 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1626 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1627 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1628 1629 /* BIOS FW BIOS VERS EC FW EC VERS */ 1630 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1631 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1632 1633 /* X-series ------------------------- */ 1634 /* FW MODEL BIOS VERS EC VERS */ 1635 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1636 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1637 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1638 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1639 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1640 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1641 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1642 1643 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1644 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1645 1646 /* (0) - older versions lack DMI EC fw string and functionality */ 1647 /* (1) - older versions known to lack functionality */ 1648 }; 1649 1650 #undef TPV_QL1 1651 #undef TPV_QL0 1652 #undef TPV_QI2 1653 #undef TPV_QI1 1654 #undef TPV_QI0 1655 #undef TPV_Q_X 1656 #undef TPV_Q 1657 1658 static void __init tpacpi_check_outdated_fw(void) 1659 { 1660 unsigned long fwvers; 1661 u16 ec_version, bios_version; 1662 1663 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1664 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1665 1666 if (!fwvers) 1667 return; 1668 1669 bios_version = fwvers & 0xffffU; 1670 ec_version = (fwvers >> 16) & 0xffffU; 1671 1672 /* note that unknown versions are set to 0x0000 and we use that */ 1673 if ((bios_version > thinkpad_id.bios_release) || 1674 (ec_version > thinkpad_id.ec_release && 1675 ec_version != TPACPI_MATCH_ANY_VERSION)) { 1676 /* 1677 * The changelogs would let us track down the exact 1678 * reason, but it is just too much of a pain to track 1679 * it. We only list BIOSes that are either really 1680 * broken, or really stable to begin with, so it is 1681 * best if the user upgrades the firmware anyway. 1682 */ 1683 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1684 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1685 } 1686 } 1687 1688 static bool __init tpacpi_is_fw_known(void) 1689 { 1690 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1691 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1692 } 1693 1694 /**************************************************************************** 1695 **************************************************************************** 1696 * 1697 * Subdrivers 1698 * 1699 **************************************************************************** 1700 ****************************************************************************/ 1701 1702 /************************************************************************* 1703 * thinkpad-acpi metadata subdriver 1704 */ 1705 1706 static int thinkpad_acpi_driver_read(struct seq_file *m) 1707 { 1708 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1709 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1710 return 0; 1711 } 1712 1713 static struct ibm_struct thinkpad_acpi_driver_data = { 1714 .name = "driver", 1715 .read = thinkpad_acpi_driver_read, 1716 }; 1717 1718 /************************************************************************* 1719 * Hotkey subdriver 1720 */ 1721 1722 /* 1723 * ThinkPad firmware event model 1724 * 1725 * The ThinkPad firmware has two main event interfaces: normal ACPI 1726 * notifications (which follow the ACPI standard), and a private event 1727 * interface. 1728 * 1729 * The private event interface also issues events for the hotkeys. As 1730 * the driver gained features, the event handling code ended up being 1731 * built around the hotkey subdriver. This will need to be refactored 1732 * to a more formal event API eventually. 1733 * 1734 * Some "hotkeys" are actually supposed to be used as event reports, 1735 * such as "brightness has changed", "volume has changed", depending on 1736 * the ThinkPad model and how the firmware is operating. 1737 * 1738 * Unlike other classes, hotkey-class events have mask/unmask control on 1739 * non-ancient firmware. However, how it behaves changes a lot with the 1740 * firmware model and version. 1741 */ 1742 1743 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1744 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1745 TP_ACPI_HOTKEYSCAN_FNF2, 1746 TP_ACPI_HOTKEYSCAN_FNF3, 1747 TP_ACPI_HOTKEYSCAN_FNF4, 1748 TP_ACPI_HOTKEYSCAN_FNF5, 1749 TP_ACPI_HOTKEYSCAN_FNF6, 1750 TP_ACPI_HOTKEYSCAN_FNF7, 1751 TP_ACPI_HOTKEYSCAN_FNF8, 1752 TP_ACPI_HOTKEYSCAN_FNF9, 1753 TP_ACPI_HOTKEYSCAN_FNF10, 1754 TP_ACPI_HOTKEYSCAN_FNF11, 1755 TP_ACPI_HOTKEYSCAN_FNF12, 1756 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1757 TP_ACPI_HOTKEYSCAN_FNINSERT, 1758 TP_ACPI_HOTKEYSCAN_FNDELETE, 1759 TP_ACPI_HOTKEYSCAN_FNHOME, 1760 TP_ACPI_HOTKEYSCAN_FNEND, 1761 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1762 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1763 TP_ACPI_HOTKEYSCAN_FNSPACE, 1764 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1765 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1766 TP_ACPI_HOTKEYSCAN_MUTE, 1767 TP_ACPI_HOTKEYSCAN_THINKPAD, 1768 TP_ACPI_HOTKEYSCAN_UNK1, 1769 TP_ACPI_HOTKEYSCAN_UNK2, 1770 TP_ACPI_HOTKEYSCAN_MICMUTE, 1771 TP_ACPI_HOTKEYSCAN_UNK4, 1772 TP_ACPI_HOTKEYSCAN_CONFIG, 1773 TP_ACPI_HOTKEYSCAN_SEARCH, 1774 TP_ACPI_HOTKEYSCAN_SCALE, 1775 TP_ACPI_HOTKEYSCAN_FILE, 1776 1777 /* Adaptive keyboard keycodes */ 1778 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, /* 32 / 0x20 */ 1779 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1780 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1781 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1782 TP_ACPI_HOTKEYSCAN_CLOUD, 1783 TP_ACPI_HOTKEYSCAN_UNK9, 1784 TP_ACPI_HOTKEYSCAN_VOICE, 1785 TP_ACPI_HOTKEYSCAN_UNK10, 1786 TP_ACPI_HOTKEYSCAN_GESTURES, 1787 TP_ACPI_HOTKEYSCAN_UNK11, 1788 TP_ACPI_HOTKEYSCAN_UNK12, 1789 TP_ACPI_HOTKEYSCAN_UNK13, 1790 TP_ACPI_HOTKEYSCAN_CONFIG2, 1791 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1792 TP_ACPI_HOTKEYSCAN_RELOAD, 1793 TP_ACPI_HOTKEYSCAN_BACK, 1794 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1795 TP_ACPI_HOTKEYSCAN_MIC_UP, 1796 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1797 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1798 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1799 1800 /* Lenovo extended keymap, starting at 0x1300 */ 1801 TP_ACPI_HOTKEYSCAN_EXTENDED_START, /* 52 / 0x34 */ 1802 /* first new observed key (star, favorites) is 0x1311 */ 1803 TP_ACPI_HOTKEYSCAN_STAR = 69, 1804 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1805 TP_ACPI_HOTKEYSCAN_CALCULATOR, 1806 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1807 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1808 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ 1809 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, 1810 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, 1811 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, 1812 }; 1813 1814 enum { /* Keys/events available through NVRAM polling */ 1815 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1816 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1817 }; 1818 1819 enum { /* Positions of some of the keys in hotkey masks */ 1820 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1821 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1822 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1823 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1824 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1825 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1826 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1827 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1828 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1829 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1830 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1831 }; 1832 1833 enum { /* NVRAM to ACPI HKEY group map */ 1834 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1835 TP_ACPI_HKEY_ZOOM_MASK | 1836 TP_ACPI_HKEY_DISPSWTCH_MASK | 1837 TP_ACPI_HKEY_HIBERNATE_MASK, 1838 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1839 TP_ACPI_HKEY_BRGHTDWN_MASK, 1840 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1841 TP_ACPI_HKEY_VOLDWN_MASK | 1842 TP_ACPI_HKEY_MUTE_MASK, 1843 }; 1844 1845 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1846 struct tp_nvram_state { 1847 u16 thinkpad_toggle:1; 1848 u16 zoom_toggle:1; 1849 u16 display_toggle:1; 1850 u16 thinklight_toggle:1; 1851 u16 hibernate_toggle:1; 1852 u16 displayexp_toggle:1; 1853 u16 display_state:1; 1854 u16 brightness_toggle:1; 1855 u16 volume_toggle:1; 1856 u16 mute:1; 1857 1858 u8 brightness_level; 1859 u8 volume_level; 1860 }; 1861 1862 /* kthread for the hotkey poller */ 1863 static struct task_struct *tpacpi_hotkey_task; 1864 1865 /* 1866 * Acquire mutex to write poller control variables as an 1867 * atomic block. 1868 * 1869 * Increment hotkey_config_change when changing them if you 1870 * want the kthread to forget old state. 1871 * 1872 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1873 */ 1874 static struct mutex hotkey_thread_data_mutex; 1875 static unsigned int hotkey_config_change; 1876 1877 /* 1878 * hotkey poller control variables 1879 * 1880 * Must be atomic or readers will also need to acquire mutex 1881 * 1882 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1883 * should be used only when the changes need to be taken as 1884 * a block, OR when one needs to force the kthread to forget 1885 * old state. 1886 */ 1887 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 1888 static unsigned int hotkey_poll_freq = 10; /* Hz */ 1889 1890 #define HOTKEY_CONFIG_CRITICAL_START \ 1891 do { \ 1892 mutex_lock(&hotkey_thread_data_mutex); \ 1893 hotkey_config_change++; \ 1894 } while (0); 1895 #define HOTKEY_CONFIG_CRITICAL_END \ 1896 mutex_unlock(&hotkey_thread_data_mutex); 1897 1898 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1899 1900 #define hotkey_source_mask 0U 1901 #define HOTKEY_CONFIG_CRITICAL_START 1902 #define HOTKEY_CONFIG_CRITICAL_END 1903 1904 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1905 1906 static struct mutex hotkey_mutex; 1907 1908 static enum { /* Reasons for waking up */ 1909 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 1910 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 1911 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 1912 } hotkey_wakeup_reason; 1913 1914 static int hotkey_autosleep_ack; 1915 1916 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 1917 static u32 hotkey_all_mask; /* all events supported in fw */ 1918 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 1919 static u32 hotkey_reserved_mask; /* events better left disabled */ 1920 static u32 hotkey_driver_mask; /* events needed by the driver */ 1921 static u32 hotkey_user_mask; /* events visible to userspace */ 1922 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 1923 1924 static bool tpacpi_driver_event(const unsigned int hkey_event); 1925 static void hotkey_poll_setup(const bool may_warn); 1926 1927 /* HKEY.MHKG() return bits */ 1928 #define TP_HOTKEY_TABLET_MASK (1 << 3) 1929 enum { 1930 TP_ACPI_MULTI_MODE_INVALID = 0, 1931 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 1932 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 1933 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 1934 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 1935 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 1936 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 1937 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 1938 }; 1939 1940 enum { 1941 /* The following modes are considered tablet mode for the purpose of 1942 * reporting the status to userspace. i.e. in all these modes it makes 1943 * sense to disable the laptop input devices such as touchpad and 1944 * keyboard. 1945 */ 1946 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 1947 TP_ACPI_MULTI_MODE_STAND | 1948 TP_ACPI_MULTI_MODE_TENT | 1949 TP_ACPI_MULTI_MODE_STAND_TENT, 1950 }; 1951 1952 static int hotkey_get_wlsw(void) 1953 { 1954 int status; 1955 1956 if (!tp_features.hotkey_wlsw) 1957 return -ENODEV; 1958 1959 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1960 if (dbg_wlswemul) 1961 return (tpacpi_wlsw_emulstate) ? 1962 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1963 #endif 1964 1965 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 1966 return -EIO; 1967 1968 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1969 } 1970 1971 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 1972 { 1973 int type = (s >> 16) & 0xffff; 1974 int value = s & 0xffff; 1975 int mode = TP_ACPI_MULTI_MODE_INVALID; 1976 int valid_modes = 0; 1977 1978 if (has_tablet_mode) 1979 *has_tablet_mode = 0; 1980 1981 switch (type) { 1982 case 1: 1983 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1984 TP_ACPI_MULTI_MODE_TABLET | 1985 TP_ACPI_MULTI_MODE_STAND_TENT; 1986 break; 1987 case 2: 1988 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1989 TP_ACPI_MULTI_MODE_FLAT | 1990 TP_ACPI_MULTI_MODE_TABLET | 1991 TP_ACPI_MULTI_MODE_STAND | 1992 TP_ACPI_MULTI_MODE_TENT; 1993 break; 1994 case 3: 1995 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1996 TP_ACPI_MULTI_MODE_FLAT; 1997 break; 1998 case 4: 1999 case 5: 2000 /* In mode 4, FLAT is not specified as a valid mode. However, 2001 * it can be seen at least on the X1 Yoga 2nd Generation. 2002 */ 2003 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2004 TP_ACPI_MULTI_MODE_FLAT | 2005 TP_ACPI_MULTI_MODE_TABLET | 2006 TP_ACPI_MULTI_MODE_STAND | 2007 TP_ACPI_MULTI_MODE_TENT; 2008 break; 2009 default: 2010 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2011 type, value, TPACPI_MAIL); 2012 return 0; 2013 } 2014 2015 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2016 *has_tablet_mode = 1; 2017 2018 switch (value) { 2019 case 1: 2020 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2021 break; 2022 case 2: 2023 mode = TP_ACPI_MULTI_MODE_FLAT; 2024 break; 2025 case 3: 2026 mode = TP_ACPI_MULTI_MODE_TABLET; 2027 break; 2028 case 4: 2029 if (type == 1) 2030 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2031 else 2032 mode = TP_ACPI_MULTI_MODE_STAND; 2033 break; 2034 case 5: 2035 mode = TP_ACPI_MULTI_MODE_TENT; 2036 break; 2037 default: 2038 if (type == 5 && value == 0xffff) { 2039 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2040 return 0; 2041 } 2042 } 2043 2044 if (!(mode & valid_modes)) { 2045 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2046 value, type, TPACPI_MAIL); 2047 return 0; 2048 } 2049 2050 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2051 } 2052 2053 static int hotkey_get_tablet_mode(int *status) 2054 { 2055 int s; 2056 2057 switch (tp_features.hotkey_tablet) { 2058 case TP_HOTKEY_TABLET_USES_MHKG: 2059 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2060 return -EIO; 2061 2062 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2063 break; 2064 case TP_HOTKEY_TABLET_USES_GMMS: 2065 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2066 return -EIO; 2067 2068 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2069 break; 2070 default: 2071 break; 2072 } 2073 2074 return 0; 2075 } 2076 2077 /* 2078 * Reads current event mask from firmware, and updates 2079 * hotkey_acpi_mask accordingly. Also resets any bits 2080 * from hotkey_user_mask that are unavailable to be 2081 * delivered (shadow requirement of the userspace ABI). 2082 */ 2083 static int hotkey_mask_get(void) 2084 { 2085 lockdep_assert_held(&hotkey_mutex); 2086 2087 if (tp_features.hotkey_mask) { 2088 u32 m = 0; 2089 2090 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2091 return -EIO; 2092 2093 hotkey_acpi_mask = m; 2094 } else { 2095 /* no mask support doesn't mean no event support... */ 2096 hotkey_acpi_mask = hotkey_all_mask; 2097 } 2098 2099 /* sync userspace-visible mask */ 2100 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2101 2102 return 0; 2103 } 2104 2105 static void hotkey_mask_warn_incomplete_mask(void) 2106 { 2107 /* log only what the user can fix... */ 2108 const u32 wantedmask = hotkey_driver_mask & 2109 ~(hotkey_acpi_mask | hotkey_source_mask) & 2110 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2111 2112 if (wantedmask) 2113 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2114 } 2115 2116 /* 2117 * Set the firmware mask when supported 2118 * 2119 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2120 * 2121 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2122 */ 2123 static int hotkey_mask_set(u32 mask) 2124 { 2125 int i; 2126 int rc = 0; 2127 2128 const u32 fwmask = mask & ~hotkey_source_mask; 2129 2130 lockdep_assert_held(&hotkey_mutex); 2131 2132 if (tp_features.hotkey_mask) { 2133 for (i = 0; i < 32; i++) { 2134 if (!acpi_evalf(hkey_handle, 2135 NULL, "MHKM", "vdd", i + 1, 2136 !!(mask & (1 << i)))) { 2137 rc = -EIO; 2138 break; 2139 } 2140 } 2141 } 2142 2143 /* 2144 * We *must* make an inconditional call to hotkey_mask_get to 2145 * refresh hotkey_acpi_mask and update hotkey_user_mask 2146 * 2147 * Take the opportunity to also log when we cannot _enable_ 2148 * a given event. 2149 */ 2150 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2151 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2152 fwmask, hotkey_acpi_mask); 2153 } 2154 2155 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2156 hotkey_mask_warn_incomplete_mask(); 2157 2158 return rc; 2159 } 2160 2161 /* 2162 * Sets hotkey_user_mask and tries to set the firmware mask 2163 */ 2164 static int hotkey_user_mask_set(const u32 mask) 2165 { 2166 int rc; 2167 2168 lockdep_assert_held(&hotkey_mutex); 2169 2170 /* Give people a chance to notice they are doing something that 2171 * is bound to go boom on their users sooner or later */ 2172 if (!tp_warned.hotkey_mask_ff && 2173 (mask == 0xffff || mask == 0xffffff || 2174 mask == 0xffffffff)) { 2175 tp_warned.hotkey_mask_ff = 1; 2176 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2177 mask); 2178 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2179 } 2180 2181 /* Try to enable what the user asked for, plus whatever we need. 2182 * this syncs everything but won't enable bits in hotkey_user_mask */ 2183 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2184 2185 /* Enable the available bits in hotkey_user_mask */ 2186 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2187 2188 return rc; 2189 } 2190 2191 /* 2192 * Sets the driver hotkey mask. 2193 * 2194 * Can be called even if the hotkey subdriver is inactive 2195 */ 2196 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2197 { 2198 int rc; 2199 2200 /* Do the right thing if hotkey_init has not been called yet */ 2201 if (!tp_features.hotkey) { 2202 hotkey_driver_mask = mask; 2203 return 0; 2204 } 2205 2206 mutex_lock(&hotkey_mutex); 2207 2208 HOTKEY_CONFIG_CRITICAL_START 2209 hotkey_driver_mask = mask; 2210 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2211 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2212 #endif 2213 HOTKEY_CONFIG_CRITICAL_END 2214 2215 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2216 ~hotkey_source_mask); 2217 hotkey_poll_setup(true); 2218 2219 mutex_unlock(&hotkey_mutex); 2220 2221 return rc; 2222 } 2223 2224 static int hotkey_status_get(int *status) 2225 { 2226 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2227 return -EIO; 2228 2229 return 0; 2230 } 2231 2232 static int hotkey_status_set(bool enable) 2233 { 2234 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2235 return -EIO; 2236 2237 return 0; 2238 } 2239 2240 static void tpacpi_input_send_tabletsw(void) 2241 { 2242 int state; 2243 2244 if (tp_features.hotkey_tablet && 2245 !hotkey_get_tablet_mode(&state)) { 2246 mutex_lock(&tpacpi_inputdev_send_mutex); 2247 2248 input_report_switch(tpacpi_inputdev, 2249 SW_TABLET_MODE, !!state); 2250 input_sync(tpacpi_inputdev); 2251 2252 mutex_unlock(&tpacpi_inputdev_send_mutex); 2253 } 2254 } 2255 2256 #define GCES_NO_SHUTTER_DEVICE BIT(31) 2257 2258 static int get_camera_shutter(void) 2259 { 2260 acpi_handle gces_handle; 2261 int output; 2262 2263 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GCES", &gces_handle))) 2264 return -ENODEV; 2265 2266 if (!acpi_evalf(gces_handle, &output, NULL, "dd", 0)) 2267 return -EIO; 2268 2269 if (output & GCES_NO_SHUTTER_DEVICE) 2270 return -ENODEV; 2271 2272 return output; 2273 } 2274 2275 static bool tpacpi_input_send_key(const u32 hkey, bool *send_acpi_ev) 2276 { 2277 bool known_ev; 2278 u32 scancode; 2279 2280 if (tpacpi_driver_event(hkey)) 2281 return true; 2282 2283 /* 2284 * Before the conversion to using the sparse-keymap helpers the driver used to 2285 * map the hkey event codes to 0x00 - 0x4d scancodes so that a straight scancode 2286 * indexed array could be used to map scancodes to keycodes: 2287 * 2288 * 0x1001 - 0x1020 -> 0x00 - 0x1f (Original ThinkPad events) 2289 * 0x1103 - 0x1116 -> 0x20 - 0x33 (Adaptive keyboard, 2014 X1 Carbon) 2290 * 0x1300 - 0x1319 -> 0x34 - 0x4d (Additional keys send in 2017+ models) 2291 * 2292 * The sparse-keymap tables still use these scancodes for these ranges to 2293 * preserve userspace API compatibility (e.g. hwdb keymappings). 2294 */ 2295 if (hkey >= TP_HKEY_EV_ORIG_KEY_START && 2296 hkey <= TP_HKEY_EV_ORIG_KEY_END) { 2297 scancode = hkey - TP_HKEY_EV_ORIG_KEY_START; 2298 if (!(hotkey_user_mask & (1 << scancode))) 2299 return true; /* Not reported but still a known code */ 2300 } else if (hkey >= TP_HKEY_EV_ADAPTIVE_KEY_START && 2301 hkey <= TP_HKEY_EV_ADAPTIVE_KEY_END) { 2302 scancode = hkey - TP_HKEY_EV_ADAPTIVE_KEY_START + 2303 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START; 2304 } else if (hkey >= TP_HKEY_EV_EXTENDED_KEY_START && 2305 hkey <= TP_HKEY_EV_EXTENDED_KEY_END) { 2306 scancode = hkey - TP_HKEY_EV_EXTENDED_KEY_START + 2307 TP_ACPI_HOTKEYSCAN_EXTENDED_START; 2308 } else { 2309 /* 2310 * Do not send ACPI netlink events for unknown hotkeys, to 2311 * avoid userspace starting to rely on them. Instead these 2312 * should be added to the keymap to send evdev events. 2313 */ 2314 if (send_acpi_ev) 2315 *send_acpi_ev = false; 2316 2317 scancode = hkey; 2318 } 2319 2320 mutex_lock(&tpacpi_inputdev_send_mutex); 2321 known_ev = sparse_keymap_report_event(tpacpi_inputdev, scancode, 1, true); 2322 mutex_unlock(&tpacpi_inputdev_send_mutex); 2323 2324 return known_ev; 2325 } 2326 2327 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2328 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2329 2330 /* Do NOT call without validating scancode first */ 2331 static void tpacpi_hotkey_send_key(unsigned int scancode) 2332 { 2333 tpacpi_input_send_key(TP_HKEY_EV_ORIG_KEY_START + scancode, NULL); 2334 } 2335 2336 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2337 { 2338 u8 d; 2339 2340 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2341 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2342 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2343 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2344 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2345 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2346 } 2347 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2348 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2349 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2350 } 2351 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2352 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2353 n->displayexp_toggle = 2354 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2355 } 2356 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2357 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2358 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2359 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2360 n->brightness_toggle = 2361 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2362 } 2363 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2364 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2365 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2366 >> TP_NVRAM_POS_LEVEL_VOLUME; 2367 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2368 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2369 } 2370 } 2371 2372 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2373 do { \ 2374 if ((event_mask & (1 << __scancode)) && \ 2375 oldn->__member != newn->__member) \ 2376 tpacpi_hotkey_send_key(__scancode); \ 2377 } while (0) 2378 2379 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2380 do { \ 2381 if (event_mask & (1 << __scancode)) \ 2382 tpacpi_hotkey_send_key(__scancode); \ 2383 } while (0) 2384 2385 static void issue_volchange(const unsigned int oldvol, 2386 const unsigned int newvol, 2387 const u32 event_mask) 2388 { 2389 unsigned int i = oldvol; 2390 2391 while (i > newvol) { 2392 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2393 i--; 2394 } 2395 while (i < newvol) { 2396 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2397 i++; 2398 } 2399 } 2400 2401 static void issue_brightnesschange(const unsigned int oldbrt, 2402 const unsigned int newbrt, 2403 const u32 event_mask) 2404 { 2405 unsigned int i = oldbrt; 2406 2407 while (i > newbrt) { 2408 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2409 i--; 2410 } 2411 while (i < newbrt) { 2412 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2413 i++; 2414 } 2415 } 2416 2417 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2418 struct tp_nvram_state *newn, 2419 const u32 event_mask) 2420 { 2421 2422 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2423 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2424 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2425 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2426 2427 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2428 2429 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2430 2431 /* 2432 * Handle volume 2433 * 2434 * This code is supposed to duplicate the IBM firmware behaviour: 2435 * - Pressing MUTE issues mute hotkey message, even when already mute 2436 * - Pressing Volume up/down issues volume up/down hotkey messages, 2437 * even when already at maximum or minimum volume 2438 * - The act of unmuting issues volume up/down notification, 2439 * depending which key was used to unmute 2440 * 2441 * We are constrained to what the NVRAM can tell us, which is not much 2442 * and certainly not enough if more than one volume hotkey was pressed 2443 * since the last poll cycle. 2444 * 2445 * Just to make our life interesting, some newer Lenovo ThinkPads have 2446 * bugs in the BIOS and may fail to update volume_toggle properly. 2447 */ 2448 if (newn->mute) { 2449 /* muted */ 2450 if (!oldn->mute || 2451 oldn->volume_toggle != newn->volume_toggle || 2452 oldn->volume_level != newn->volume_level) { 2453 /* recently muted, or repeated mute keypress, or 2454 * multiple presses ending in mute */ 2455 issue_volchange(oldn->volume_level, newn->volume_level, 2456 event_mask); 2457 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2458 } 2459 } else { 2460 /* unmute */ 2461 if (oldn->mute) { 2462 /* recently unmuted, issue 'unmute' keypress */ 2463 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2464 } 2465 if (oldn->volume_level != newn->volume_level) { 2466 issue_volchange(oldn->volume_level, newn->volume_level, 2467 event_mask); 2468 } else if (oldn->volume_toggle != newn->volume_toggle) { 2469 /* repeated vol up/down keypress at end of scale ? */ 2470 if (newn->volume_level == 0) 2471 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2472 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2473 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2474 } 2475 } 2476 2477 /* handle brightness */ 2478 if (oldn->brightness_level != newn->brightness_level) { 2479 issue_brightnesschange(oldn->brightness_level, 2480 newn->brightness_level, event_mask); 2481 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2482 /* repeated key presses that didn't change state */ 2483 if (newn->brightness_level == 0) 2484 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2485 else if (newn->brightness_level >= bright_maxlvl 2486 && !tp_features.bright_unkfw) 2487 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2488 } 2489 2490 #undef TPACPI_COMPARE_KEY 2491 #undef TPACPI_MAY_SEND_KEY 2492 } 2493 2494 /* 2495 * Polling driver 2496 * 2497 * We track all events in hotkey_source_mask all the time, since 2498 * most of them are edge-based. We only issue those requested by 2499 * hotkey_user_mask or hotkey_driver_mask, though. 2500 */ 2501 static int hotkey_kthread(void *data) 2502 { 2503 struct tp_nvram_state s[2] = { 0 }; 2504 u32 poll_mask, event_mask; 2505 unsigned int si, so; 2506 unsigned long t; 2507 unsigned int change_detector; 2508 unsigned int poll_freq; 2509 bool was_frozen; 2510 2511 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2512 goto exit; 2513 2514 set_freezable(); 2515 2516 so = 0; 2517 si = 1; 2518 t = 0; 2519 2520 /* Initial state for compares */ 2521 mutex_lock(&hotkey_thread_data_mutex); 2522 change_detector = hotkey_config_change; 2523 poll_mask = hotkey_source_mask; 2524 event_mask = hotkey_source_mask & 2525 (hotkey_driver_mask | hotkey_user_mask); 2526 poll_freq = hotkey_poll_freq; 2527 mutex_unlock(&hotkey_thread_data_mutex); 2528 hotkey_read_nvram(&s[so], poll_mask); 2529 2530 while (!kthread_should_stop()) { 2531 if (t == 0) { 2532 if (likely(poll_freq)) 2533 t = 1000/poll_freq; 2534 else 2535 t = 100; /* should never happen... */ 2536 } 2537 t = msleep_interruptible(t); 2538 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2539 break; 2540 2541 if (t > 0 && !was_frozen) 2542 continue; 2543 2544 mutex_lock(&hotkey_thread_data_mutex); 2545 if (was_frozen || hotkey_config_change != change_detector) { 2546 /* forget old state on thaw or config change */ 2547 si = so; 2548 t = 0; 2549 change_detector = hotkey_config_change; 2550 } 2551 poll_mask = hotkey_source_mask; 2552 event_mask = hotkey_source_mask & 2553 (hotkey_driver_mask | hotkey_user_mask); 2554 poll_freq = hotkey_poll_freq; 2555 mutex_unlock(&hotkey_thread_data_mutex); 2556 2557 if (likely(poll_mask)) { 2558 hotkey_read_nvram(&s[si], poll_mask); 2559 if (likely(si != so)) { 2560 hotkey_compare_and_issue_event(&s[so], &s[si], 2561 event_mask); 2562 } 2563 } 2564 2565 so = si; 2566 si ^= 1; 2567 } 2568 2569 exit: 2570 return 0; 2571 } 2572 2573 static void hotkey_poll_stop_sync(void) 2574 { 2575 lockdep_assert_held(&hotkey_mutex); 2576 2577 if (tpacpi_hotkey_task) { 2578 kthread_stop(tpacpi_hotkey_task); 2579 tpacpi_hotkey_task = NULL; 2580 } 2581 } 2582 2583 static void hotkey_poll_setup(const bool may_warn) 2584 { 2585 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2586 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2587 2588 lockdep_assert_held(&hotkey_mutex); 2589 2590 if (hotkey_poll_freq > 0 && 2591 (poll_driver_mask || 2592 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2593 if (!tpacpi_hotkey_task) { 2594 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2595 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2596 if (IS_ERR(tpacpi_hotkey_task)) { 2597 tpacpi_hotkey_task = NULL; 2598 pr_err("could not create kernel thread for hotkey polling\n"); 2599 } 2600 } 2601 } else { 2602 hotkey_poll_stop_sync(); 2603 if (may_warn && (poll_driver_mask || poll_user_mask) && 2604 hotkey_poll_freq == 0) { 2605 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2606 poll_user_mask, poll_driver_mask); 2607 } 2608 } 2609 } 2610 2611 static void hotkey_poll_setup_safe(const bool may_warn) 2612 { 2613 mutex_lock(&hotkey_mutex); 2614 hotkey_poll_setup(may_warn); 2615 mutex_unlock(&hotkey_mutex); 2616 } 2617 2618 static void hotkey_poll_set_freq(unsigned int freq) 2619 { 2620 lockdep_assert_held(&hotkey_mutex); 2621 2622 if (!freq) 2623 hotkey_poll_stop_sync(); 2624 2625 hotkey_poll_freq = freq; 2626 } 2627 2628 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2629 2630 static void hotkey_poll_setup(const bool __unused) 2631 { 2632 } 2633 2634 static void hotkey_poll_setup_safe(const bool __unused) 2635 { 2636 } 2637 2638 static void hotkey_poll_stop_sync(void) 2639 { 2640 } 2641 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2642 2643 static int hotkey_inputdev_open(struct input_dev *dev) 2644 { 2645 switch (tpacpi_lifecycle) { 2646 case TPACPI_LIFE_INIT: 2647 case TPACPI_LIFE_RUNNING: 2648 hotkey_poll_setup_safe(false); 2649 return 0; 2650 case TPACPI_LIFE_EXITING: 2651 return -EBUSY; 2652 } 2653 2654 /* Should only happen if tpacpi_lifecycle is corrupt */ 2655 BUG(); 2656 return -EBUSY; 2657 } 2658 2659 static void hotkey_inputdev_close(struct input_dev *dev) 2660 { 2661 /* disable hotkey polling when possible */ 2662 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2663 !(hotkey_source_mask & hotkey_driver_mask)) 2664 hotkey_poll_setup_safe(false); 2665 } 2666 2667 /* sysfs hotkey enable ------------------------------------------------- */ 2668 static ssize_t hotkey_enable_show(struct device *dev, 2669 struct device_attribute *attr, 2670 char *buf) 2671 { 2672 int res, status; 2673 2674 printk_deprecated_attribute("hotkey_enable", 2675 "Hotkey reporting is always enabled"); 2676 2677 res = hotkey_status_get(&status); 2678 if (res) 2679 return res; 2680 2681 return sysfs_emit(buf, "%d\n", status); 2682 } 2683 2684 static ssize_t hotkey_enable_store(struct device *dev, 2685 struct device_attribute *attr, 2686 const char *buf, size_t count) 2687 { 2688 unsigned long t; 2689 2690 printk_deprecated_attribute("hotkey_enable", 2691 "Hotkeys can be disabled through hotkey_mask"); 2692 2693 if (parse_strtoul(buf, 1, &t)) 2694 return -EINVAL; 2695 2696 if (t == 0) 2697 return -EPERM; 2698 2699 return count; 2700 } 2701 2702 static DEVICE_ATTR_RW(hotkey_enable); 2703 2704 /* sysfs hotkey mask --------------------------------------------------- */ 2705 static ssize_t hotkey_mask_show(struct device *dev, 2706 struct device_attribute *attr, 2707 char *buf) 2708 { 2709 return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask); 2710 } 2711 2712 static ssize_t hotkey_mask_store(struct device *dev, 2713 struct device_attribute *attr, 2714 const char *buf, size_t count) 2715 { 2716 unsigned long t; 2717 int res; 2718 2719 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2720 return -EINVAL; 2721 2722 if (mutex_lock_killable(&hotkey_mutex)) 2723 return -ERESTARTSYS; 2724 2725 res = hotkey_user_mask_set(t); 2726 2727 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2728 hotkey_poll_setup(true); 2729 #endif 2730 2731 mutex_unlock(&hotkey_mutex); 2732 2733 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2734 2735 return (res) ? res : count; 2736 } 2737 2738 static DEVICE_ATTR_RW(hotkey_mask); 2739 2740 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2741 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2742 struct device_attribute *attr, 2743 char *buf) 2744 { 2745 return sysfs_emit(buf, "0\n"); 2746 } 2747 2748 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2749 2750 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2751 static ssize_t hotkey_bios_mask_show(struct device *dev, 2752 struct device_attribute *attr, 2753 char *buf) 2754 { 2755 printk_deprecated_attribute("hotkey_bios_mask", 2756 "This attribute is useless."); 2757 return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask); 2758 } 2759 2760 static DEVICE_ATTR_RO(hotkey_bios_mask); 2761 2762 /* sysfs hotkey all_mask ----------------------------------------------- */ 2763 static ssize_t hotkey_all_mask_show(struct device *dev, 2764 struct device_attribute *attr, 2765 char *buf) 2766 { 2767 return sysfs_emit(buf, "0x%08x\n", 2768 hotkey_all_mask | hotkey_source_mask); 2769 } 2770 2771 static DEVICE_ATTR_RO(hotkey_all_mask); 2772 2773 /* sysfs hotkey all_mask ----------------------------------------------- */ 2774 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2775 struct device_attribute *attr, 2776 char *buf) 2777 { 2778 return sysfs_emit(buf, "0x%08x\n", 2779 hotkey_adaptive_all_mask | hotkey_source_mask); 2780 } 2781 2782 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2783 2784 /* sysfs hotkey recommended_mask --------------------------------------- */ 2785 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2786 struct device_attribute *attr, 2787 char *buf) 2788 { 2789 return sysfs_emit(buf, "0x%08x\n", 2790 (hotkey_all_mask | hotkey_source_mask) 2791 & ~hotkey_reserved_mask); 2792 } 2793 2794 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2795 2796 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2797 2798 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2799 static ssize_t hotkey_source_mask_show(struct device *dev, 2800 struct device_attribute *attr, 2801 char *buf) 2802 { 2803 return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask); 2804 } 2805 2806 static ssize_t hotkey_source_mask_store(struct device *dev, 2807 struct device_attribute *attr, 2808 const char *buf, size_t count) 2809 { 2810 unsigned long t; 2811 u32 r_ev; 2812 int rc; 2813 2814 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2815 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2816 return -EINVAL; 2817 2818 if (mutex_lock_killable(&hotkey_mutex)) 2819 return -ERESTARTSYS; 2820 2821 HOTKEY_CONFIG_CRITICAL_START 2822 hotkey_source_mask = t; 2823 HOTKEY_CONFIG_CRITICAL_END 2824 2825 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2826 ~hotkey_source_mask); 2827 hotkey_poll_setup(true); 2828 2829 /* check if events needed by the driver got disabled */ 2830 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2831 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2832 2833 mutex_unlock(&hotkey_mutex); 2834 2835 if (rc < 0) 2836 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2837 2838 if (r_ev) 2839 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2840 r_ev); 2841 2842 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2843 2844 return (rc < 0) ? rc : count; 2845 } 2846 2847 static DEVICE_ATTR_RW(hotkey_source_mask); 2848 2849 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2850 static ssize_t hotkey_poll_freq_show(struct device *dev, 2851 struct device_attribute *attr, 2852 char *buf) 2853 { 2854 return sysfs_emit(buf, "%d\n", hotkey_poll_freq); 2855 } 2856 2857 static ssize_t hotkey_poll_freq_store(struct device *dev, 2858 struct device_attribute *attr, 2859 const char *buf, size_t count) 2860 { 2861 unsigned long t; 2862 2863 if (parse_strtoul(buf, 25, &t)) 2864 return -EINVAL; 2865 2866 if (mutex_lock_killable(&hotkey_mutex)) 2867 return -ERESTARTSYS; 2868 2869 hotkey_poll_set_freq(t); 2870 hotkey_poll_setup(true); 2871 2872 mutex_unlock(&hotkey_mutex); 2873 2874 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2875 2876 return count; 2877 } 2878 2879 static DEVICE_ATTR_RW(hotkey_poll_freq); 2880 2881 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2882 2883 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2884 static ssize_t hotkey_radio_sw_show(struct device *dev, 2885 struct device_attribute *attr, 2886 char *buf) 2887 { 2888 int res; 2889 res = hotkey_get_wlsw(); 2890 if (res < 0) 2891 return res; 2892 2893 /* Opportunistic update */ 2894 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2895 2896 return sysfs_emit(buf, "%d\n", 2897 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2898 } 2899 2900 static DEVICE_ATTR_RO(hotkey_radio_sw); 2901 2902 static void hotkey_radio_sw_notify_change(void) 2903 { 2904 if (tp_features.hotkey_wlsw) 2905 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2906 "hotkey_radio_sw"); 2907 } 2908 2909 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2910 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2911 struct device_attribute *attr, 2912 char *buf) 2913 { 2914 int res, s; 2915 res = hotkey_get_tablet_mode(&s); 2916 if (res < 0) 2917 return res; 2918 2919 return sysfs_emit(buf, "%d\n", !!s); 2920 } 2921 2922 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2923 2924 static void hotkey_tablet_mode_notify_change(void) 2925 { 2926 if (tp_features.hotkey_tablet) 2927 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2928 "hotkey_tablet_mode"); 2929 } 2930 2931 /* sysfs wakeup reason (pollable) -------------------------------------- */ 2932 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 2933 struct device_attribute *attr, 2934 char *buf) 2935 { 2936 return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason); 2937 } 2938 2939 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 2940 2941 static void hotkey_wakeup_reason_notify_change(void) 2942 { 2943 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2944 "wakeup_reason"); 2945 } 2946 2947 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 2948 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 2949 struct device_attribute *attr, 2950 char *buf) 2951 { 2952 return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack); 2953 } 2954 2955 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 2956 hotkey_wakeup_hotunplug_complete_show, NULL); 2957 2958 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 2959 { 2960 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2961 "wakeup_hotunplug_complete"); 2962 } 2963 2964 /* sysfs adaptive kbd mode --------------------------------------------- */ 2965 2966 static int adaptive_keyboard_get_mode(void); 2967 static int adaptive_keyboard_set_mode(int new_mode); 2968 2969 enum ADAPTIVE_KEY_MODE { 2970 HOME_MODE, 2971 WEB_BROWSER_MODE, 2972 WEB_CONFERENCE_MODE, 2973 FUNCTION_MODE, 2974 LAYFLAT_MODE 2975 }; 2976 2977 static ssize_t adaptive_kbd_mode_show(struct device *dev, 2978 struct device_attribute *attr, 2979 char *buf) 2980 { 2981 int current_mode; 2982 2983 current_mode = adaptive_keyboard_get_mode(); 2984 if (current_mode < 0) 2985 return current_mode; 2986 2987 return sysfs_emit(buf, "%d\n", current_mode); 2988 } 2989 2990 static ssize_t adaptive_kbd_mode_store(struct device *dev, 2991 struct device_attribute *attr, 2992 const char *buf, size_t count) 2993 { 2994 unsigned long t; 2995 int res; 2996 2997 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 2998 return -EINVAL; 2999 3000 res = adaptive_keyboard_set_mode(t); 3001 return (res < 0) ? res : count; 3002 } 3003 3004 static DEVICE_ATTR_RW(adaptive_kbd_mode); 3005 3006 static struct attribute *adaptive_kbd_attributes[] = { 3007 &dev_attr_adaptive_kbd_mode.attr, 3008 NULL 3009 }; 3010 3011 static umode_t hadaptive_kbd_attr_is_visible(struct kobject *kobj, 3012 struct attribute *attr, int n) 3013 { 3014 return tp_features.has_adaptive_kbd ? attr->mode : 0; 3015 } 3016 3017 static const struct attribute_group adaptive_kbd_attr_group = { 3018 .is_visible = hadaptive_kbd_attr_is_visible, 3019 .attrs = adaptive_kbd_attributes, 3020 }; 3021 3022 /* --------------------------------------------------------------------- */ 3023 3024 static struct attribute *hotkey_attributes[] = { 3025 &dev_attr_hotkey_enable.attr, 3026 &dev_attr_hotkey_bios_enabled.attr, 3027 &dev_attr_hotkey_bios_mask.attr, 3028 &dev_attr_wakeup_reason.attr, 3029 &dev_attr_wakeup_hotunplug_complete.attr, 3030 &dev_attr_hotkey_mask.attr, 3031 &dev_attr_hotkey_all_mask.attr, 3032 &dev_attr_hotkey_adaptive_all_mask.attr, 3033 &dev_attr_hotkey_recommended_mask.attr, 3034 &dev_attr_hotkey_tablet_mode.attr, 3035 &dev_attr_hotkey_radio_sw.attr, 3036 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3037 &dev_attr_hotkey_source_mask.attr, 3038 &dev_attr_hotkey_poll_freq.attr, 3039 #endif 3040 NULL 3041 }; 3042 3043 static umode_t hotkey_attr_is_visible(struct kobject *kobj, 3044 struct attribute *attr, int n) 3045 { 3046 if (attr == &dev_attr_hotkey_tablet_mode.attr) { 3047 if (!tp_features.hotkey_tablet) 3048 return 0; 3049 } else if (attr == &dev_attr_hotkey_radio_sw.attr) { 3050 if (!tp_features.hotkey_wlsw) 3051 return 0; 3052 } 3053 3054 return attr->mode; 3055 } 3056 3057 static const struct attribute_group hotkey_attr_group = { 3058 .is_visible = hotkey_attr_is_visible, 3059 .attrs = hotkey_attributes, 3060 }; 3061 3062 /* 3063 * Sync both the hw and sw blocking state of all switches 3064 */ 3065 static void tpacpi_send_radiosw_update(void) 3066 { 3067 int wlsw; 3068 3069 /* 3070 * We must sync all rfkill controllers *before* issuing any 3071 * rfkill input events, or we will race the rfkill core input 3072 * handler. 3073 * 3074 * tpacpi_inputdev_send_mutex works as a synchronization point 3075 * for the above. 3076 * 3077 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3078 */ 3079 3080 wlsw = hotkey_get_wlsw(); 3081 3082 /* Sync hw blocking state first if it is hw-blocked */ 3083 if (wlsw == TPACPI_RFK_RADIO_OFF) 3084 tpacpi_rfk_update_hwblock_state(true); 3085 3086 /* Sync hw blocking state last if it is hw-unblocked */ 3087 if (wlsw == TPACPI_RFK_RADIO_ON) 3088 tpacpi_rfk_update_hwblock_state(false); 3089 3090 /* Issue rfkill input event for WLSW switch */ 3091 if (!(wlsw < 0)) { 3092 mutex_lock(&tpacpi_inputdev_send_mutex); 3093 3094 input_report_switch(tpacpi_inputdev, 3095 SW_RFKILL_ALL, (wlsw > 0)); 3096 input_sync(tpacpi_inputdev); 3097 3098 mutex_unlock(&tpacpi_inputdev_send_mutex); 3099 } 3100 3101 /* 3102 * this can be unconditional, as we will poll state again 3103 * if userspace uses the notify to read data 3104 */ 3105 hotkey_radio_sw_notify_change(); 3106 } 3107 3108 static void hotkey_exit(void) 3109 { 3110 mutex_lock(&hotkey_mutex); 3111 hotkey_poll_stop_sync(); 3112 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3113 "restoring original HKEY status and mask\n"); 3114 /* yes, there is a bitwise or below, we want the 3115 * functions to be called even if one of them fail */ 3116 if (((tp_features.hotkey_mask && 3117 hotkey_mask_set(hotkey_orig_mask)) | 3118 hotkey_status_set(false)) != 0) 3119 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3120 3121 mutex_unlock(&hotkey_mutex); 3122 } 3123 3124 /* 3125 * HKEY quirks: 3126 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3127 */ 3128 3129 #define TPACPI_HK_Q_INIMASK 0x0001 3130 3131 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3132 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3133 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3134 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3135 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3136 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3137 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3138 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3139 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3140 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3141 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3142 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3143 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3144 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3145 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3146 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3147 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3148 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3149 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3150 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3151 }; 3152 3153 static int hotkey_init_tablet_mode(void) 3154 { 3155 int in_tablet_mode = 0, res; 3156 char *type = NULL; 3157 3158 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3159 int has_tablet_mode; 3160 3161 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3162 &has_tablet_mode); 3163 /* 3164 * The Yoga 11e series has 2 accelerometers described by a 3165 * BOSC0200 ACPI node. This setup relies on a Windows service 3166 * which calls special ACPI methods on this node to report 3167 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver 3168 * does not support this, so skip the hotkey on these models. 3169 */ 3170 if (has_tablet_mode && !dual_accel_detect()) 3171 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3172 type = "GMMS"; 3173 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3174 /* For X41t, X60t, X61t Tablets... */ 3175 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3176 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3177 type = "MHKG"; 3178 } 3179 3180 if (!tp_features.hotkey_tablet) 3181 return 0; 3182 3183 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3184 type, in_tablet_mode ? "tablet" : "laptop"); 3185 3186 return in_tablet_mode; 3187 } 3188 3189 static const struct key_entry keymap_ibm[] __initconst = { 3190 /* Original hotkey mappings translated scancodes 0x00 - 0x1f */ 3191 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } }, 3192 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_BATTERY } }, 3193 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_COFFEE } }, 3194 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } }, 3195 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } }, 3196 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_FN_F6 } }, 3197 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } }, 3198 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } }, 3199 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } }, 3200 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } }, 3201 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } }, 3202 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } }, 3203 /* Brightness: firmware always reacts, suppressed through hotkey_reserved_mask. */ 3204 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } }, 3205 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } }, 3206 /* Thinklight: firmware always reacts, suppressed through hotkey_reserved_mask. */ 3207 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } }, 3208 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } }, 3209 /* 3210 * Volume: firmware always reacts and reprograms the built-in *extra* mixer. 3211 * Suppressed by default through hotkey_reserved_mask. 3212 */ 3213 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } }, 3214 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } }, 3215 { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } }, 3216 { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } }, 3217 { KE_END } 3218 }; 3219 3220 static const struct key_entry keymap_lenovo[] __initconst = { 3221 /* Original hotkey mappings translated scancodes 0x00 - 0x1f */ 3222 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } }, 3223 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_COFFEE } }, 3224 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_BATTERY } }, 3225 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } }, 3226 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } }, 3227 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_CAMERA, } }, 3228 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } }, 3229 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } }, 3230 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } }, 3231 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } }, 3232 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } }, 3233 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } }, 3234 /* 3235 * These should be enabled --only-- when ACPI video is disabled and 3236 * are handled in a special way by the init code. 3237 */ 3238 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } }, 3239 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } }, 3240 /* Suppressed by default through hotkey_reserved_mask. */ 3241 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } }, 3242 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } }, 3243 /* 3244 * Volume: z60/z61, T60 (BIOS version?): firmware always reacts and 3245 * reprograms the built-in *extra* mixer. 3246 * T60?, T61, R60?, R61: firmware and EC tries to send these over 3247 * the regular keyboard (not through tpacpi). There are still weird bugs 3248 * re. MUTE. May cause the BIOS to interfere with the HDA mixer. 3249 * Suppressed by default through hotkey_reserved_mask. 3250 */ 3251 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } }, 3252 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } }, 3253 { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } }, 3254 { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } }, 3255 { KE_KEY, TP_ACPI_HOTKEYSCAN_MICMUTE, { KEY_MICMUTE } }, 3256 { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG, { KEY_CONFIG } }, 3257 { KE_KEY, TP_ACPI_HOTKEYSCAN_SEARCH, { KEY_SEARCH } }, 3258 { KE_KEY, TP_ACPI_HOTKEYSCAN_SCALE, { KEY_SCALE } }, 3259 { KE_KEY, TP_ACPI_HOTKEYSCAN_FILE, { KEY_FILE } }, 3260 /* Adaptive keyboard mappings for Carbon X1 2014 translated scancodes 0x20 - 0x33 */ 3261 { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE2, { KEY_RESERVED } }, 3262 { KE_KEY, TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, { KEY_BRIGHTNESS_MIN } }, 3263 { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, { KEY_SELECTIVE_SCREENSHOT } }, 3264 { KE_KEY, TP_ACPI_HOTKEYSCAN_CLOUD, { KEY_XFER } }, 3265 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK9, { KEY_RESERVED } }, 3266 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOICE, { KEY_VOICECOMMAND } }, 3267 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK10, { KEY_RESERVED } }, 3268 { KE_KEY, TP_ACPI_HOTKEYSCAN_GESTURES, { KEY_RESERVED } }, 3269 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK11, { KEY_RESERVED } }, 3270 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK12, { KEY_RESERVED } }, 3271 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK13, { KEY_RESERVED } }, 3272 { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG2, { KEY_CONFIG } }, 3273 { KE_KEY, TP_ACPI_HOTKEYSCAN_NEW_TAB, { KEY_RESERVED } }, 3274 { KE_KEY, TP_ACPI_HOTKEYSCAN_RELOAD, { KEY_REFRESH } }, 3275 { KE_KEY, TP_ACPI_HOTKEYSCAN_BACK, { KEY_BACK } }, 3276 { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_DOWN, { KEY_RESERVED } }, 3277 { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_UP, { KEY_RESERVED } }, 3278 { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, { KEY_RESERVED } }, 3279 { KE_KEY, TP_ACPI_HOTKEYSCAN_CAMERA_MODE, { KEY_RESERVED } }, 3280 { KE_KEY, TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, { KEY_RESERVED } }, 3281 /* Extended hotkeys mappings translated scancodes 0x34 - 0x4d */ 3282 { KE_KEY, TP_ACPI_HOTKEYSCAN_STAR, { KEY_BOOKMARKS } }, 3283 { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, { KEY_SELECTIVE_SCREENSHOT } }, 3284 { KE_KEY, TP_ACPI_HOTKEYSCAN_CALCULATOR, { KEY_CALC } }, 3285 { KE_KEY, TP_ACPI_HOTKEYSCAN_BLUETOOTH, { KEY_BLUETOOTH } }, 3286 { KE_KEY, TP_ACPI_HOTKEYSCAN_KEYBOARD, { KEY_KEYBOARD } }, 3287 /* Used by "Lenovo Quick Clean" */ 3288 { KE_KEY, TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, { KEY_FN_RIGHT_SHIFT } }, 3289 { KE_KEY, TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, { KEY_NOTIFICATION_CENTER } }, 3290 { KE_KEY, TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, { KEY_PICKUP_PHONE } }, 3291 { KE_KEY, TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, { KEY_HANGUP_PHONE } }, 3292 /* 3293 * All mapping below are for raw untranslated hkey event codes mapped directly 3294 * after switching to sparse keymap support. The mappings above use translated 3295 * scancodes to preserve uAPI compatibility, see tpacpi_input_send_key(). 3296 */ 3297 { KE_KEY, 0x131d, { KEY_VENDOR } }, /* System debug info, similar to old ThinkPad key */ 3298 { KE_KEY, 0x1320, { KEY_LINK_PHONE } }, 3299 { KE_KEY, 0x1402, { KEY_LINK_PHONE } }, 3300 { KE_KEY, TP_HKEY_EV_TRACK_DOUBLETAP /* 0x8036 */, { KEY_PROG4 } }, 3301 { KE_END } 3302 }; 3303 3304 static int __init hotkey_init(struct ibm_init_struct *iibm) 3305 { 3306 enum keymap_index { 3307 TPACPI_KEYMAP_IBM_GENERIC = 0, 3308 TPACPI_KEYMAP_LENOVO_GENERIC, 3309 }; 3310 3311 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3312 /* Generic maps (fallback) */ 3313 { 3314 .vendor = PCI_VENDOR_ID_IBM, 3315 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3316 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3317 }, 3318 { 3319 .vendor = PCI_VENDOR_ID_LENOVO, 3320 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3321 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3322 }, 3323 }; 3324 3325 unsigned long keymap_id, quirks; 3326 const struct key_entry *keymap; 3327 bool radiosw_state = false; 3328 bool tabletsw_state = false; 3329 int hkeyv, res, status, camera_shutter_state; 3330 3331 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3332 "initializing hotkey subdriver\n"); 3333 3334 BUG_ON(!tpacpi_inputdev); 3335 BUG_ON(tpacpi_inputdev->open != NULL || 3336 tpacpi_inputdev->close != NULL); 3337 3338 TPACPI_ACPIHANDLE_INIT(hkey); 3339 mutex_init(&hotkey_mutex); 3340 3341 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3342 mutex_init(&hotkey_thread_data_mutex); 3343 #endif 3344 3345 /* hotkey not supported on 570 */ 3346 tp_features.hotkey = hkey_handle != NULL; 3347 3348 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3349 "hotkeys are %s\n", 3350 str_supported(tp_features.hotkey)); 3351 3352 if (!tp_features.hotkey) 3353 return -ENODEV; 3354 3355 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3356 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3357 3358 tpacpi_disable_brightness_delay(); 3359 3360 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3361 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3362 for HKEY interface version 0x100 */ 3363 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3364 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3365 "firmware HKEY interface version: 0x%x\n", 3366 hkeyv); 3367 3368 switch (hkeyv >> 8) { 3369 case 1: 3370 /* 3371 * MHKV 0x100 in A31, R40, R40e, 3372 * T4x, X31, and later 3373 */ 3374 3375 /* Paranoia check AND init hotkey_all_mask */ 3376 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3377 "MHKA", "qd")) { 3378 pr_err("missing MHKA handler, please report this to %s\n", 3379 TPACPI_MAIL); 3380 /* Fallback: pre-init for FN+F3,F4,F12 */ 3381 hotkey_all_mask = 0x080cU; 3382 } else { 3383 tp_features.hotkey_mask = 1; 3384 } 3385 break; 3386 3387 case 2: 3388 /* 3389 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3390 */ 3391 3392 /* Paranoia check AND init hotkey_all_mask */ 3393 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3394 "MHKA", "dd", 1)) { 3395 pr_err("missing MHKA handler, please report this to %s\n", 3396 TPACPI_MAIL); 3397 /* Fallback: pre-init for FN+F3,F4,F12 */ 3398 hotkey_all_mask = 0x080cU; 3399 } else { 3400 tp_features.hotkey_mask = 1; 3401 } 3402 3403 /* 3404 * Check if we have an adaptive keyboard, like on the 3405 * Lenovo Carbon X1 2014 (2nd Gen). 3406 */ 3407 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3408 "MHKA", "dd", 2)) { 3409 if (hotkey_adaptive_all_mask != 0) 3410 tp_features.has_adaptive_kbd = true; 3411 } else { 3412 tp_features.has_adaptive_kbd = false; 3413 hotkey_adaptive_all_mask = 0x0U; 3414 } 3415 break; 3416 3417 default: 3418 pr_err("unknown version of the HKEY interface: 0x%x\n", 3419 hkeyv); 3420 pr_err("please report this to %s\n", TPACPI_MAIL); 3421 break; 3422 } 3423 } 3424 3425 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3426 "hotkey masks are %s\n", 3427 str_supported(tp_features.hotkey_mask)); 3428 3429 /* Init hotkey_all_mask if not initialized yet */ 3430 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3431 (quirks & TPACPI_HK_Q_INIMASK)) 3432 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3433 3434 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3435 if (tp_features.hotkey_mask) { 3436 /* hotkey_source_mask *must* be zero for 3437 * the first hotkey_mask_get to return hotkey_orig_mask */ 3438 mutex_lock(&hotkey_mutex); 3439 res = hotkey_mask_get(); 3440 mutex_unlock(&hotkey_mutex); 3441 if (res) 3442 return res; 3443 3444 hotkey_orig_mask = hotkey_acpi_mask; 3445 } else { 3446 hotkey_orig_mask = hotkey_all_mask; 3447 hotkey_acpi_mask = hotkey_all_mask; 3448 } 3449 3450 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3451 if (dbg_wlswemul) { 3452 tp_features.hotkey_wlsw = 1; 3453 radiosw_state = !!tpacpi_wlsw_emulstate; 3454 pr_info("radio switch emulation enabled\n"); 3455 } else 3456 #endif 3457 /* Not all thinkpads have a hardware radio switch */ 3458 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3459 tp_features.hotkey_wlsw = 1; 3460 radiosw_state = !!status; 3461 pr_info("radio switch found; radios are %s\n", str_enabled_disabled(status & BIT(0))); 3462 } 3463 3464 tabletsw_state = hotkey_init_tablet_mode(); 3465 3466 /* Set up key map */ 3467 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3468 ARRAY_SIZE(tpacpi_keymap_qtable)); 3469 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3470 "using keymap number %lu\n", keymap_id); 3471 3472 /* Keys which should be reserved on both IBM and Lenovo models */ 3473 hotkey_reserved_mask = TP_ACPI_HKEY_KBD_LIGHT_MASK | 3474 TP_ACPI_HKEY_VOLUP_MASK | 3475 TP_ACPI_HKEY_VOLDWN_MASK | 3476 TP_ACPI_HKEY_MUTE_MASK; 3477 /* 3478 * Reserve brightness up/down unconditionally on IBM models, on Lenovo 3479 * models these are disabled based on acpi_video_get_backlight_type(). 3480 */ 3481 if (keymap_id == TPACPI_KEYMAP_IBM_GENERIC) { 3482 hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK | 3483 TP_ACPI_HKEY_BRGHTDWN_MASK; 3484 keymap = keymap_ibm; 3485 } else { 3486 keymap = keymap_lenovo; 3487 } 3488 3489 res = sparse_keymap_setup(tpacpi_inputdev, keymap, NULL); 3490 if (res) 3491 return res; 3492 3493 camera_shutter_state = get_camera_shutter(); 3494 if (camera_shutter_state >= 0) { 3495 input_set_capability(tpacpi_inputdev, EV_SW, SW_CAMERA_LENS_COVER); 3496 input_report_switch(tpacpi_inputdev, SW_CAMERA_LENS_COVER, camera_shutter_state); 3497 } 3498 3499 if (tp_features.hotkey_wlsw) { 3500 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3501 input_report_switch(tpacpi_inputdev, 3502 SW_RFKILL_ALL, radiosw_state); 3503 } 3504 if (tp_features.hotkey_tablet) { 3505 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3506 input_report_switch(tpacpi_inputdev, 3507 SW_TABLET_MODE, tabletsw_state); 3508 } 3509 3510 /* Do not issue duplicate brightness change events to 3511 * userspace. tpacpi_detect_brightness_capabilities() must have 3512 * been called before this point */ 3513 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3514 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3515 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3516 3517 /* Disable brightness up/down on Lenovo thinkpads when 3518 * ACPI is handling them, otherwise it is plain impossible 3519 * for userspace to do something even remotely sane */ 3520 hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK | 3521 TP_ACPI_HKEY_BRGHTDWN_MASK; 3522 } 3523 3524 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3525 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3526 & ~hotkey_all_mask 3527 & ~hotkey_reserved_mask; 3528 3529 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3530 "hotkey source mask 0x%08x, polling freq %u\n", 3531 hotkey_source_mask, hotkey_poll_freq); 3532 #endif 3533 3534 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3535 "enabling firmware HKEY event interface...\n"); 3536 res = hotkey_status_set(true); 3537 if (res) { 3538 hotkey_exit(); 3539 return res; 3540 } 3541 mutex_lock(&hotkey_mutex); 3542 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3543 | hotkey_driver_mask) 3544 & ~hotkey_source_mask); 3545 mutex_unlock(&hotkey_mutex); 3546 if (res < 0 && res != -ENXIO) { 3547 hotkey_exit(); 3548 return res; 3549 } 3550 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3551 & ~hotkey_reserved_mask; 3552 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3553 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3554 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3555 3556 tpacpi_inputdev->open = &hotkey_inputdev_open; 3557 tpacpi_inputdev->close = &hotkey_inputdev_close; 3558 3559 hotkey_poll_setup_safe(true); 3560 3561 /* Enable doubletap by default */ 3562 tp_features.trackpoint_doubletap = 1; 3563 3564 return 0; 3565 } 3566 3567 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3568 * mode, Web conference mode, Function mode and Lay-flat mode. 3569 * We support Home mode and Function mode currently. 3570 * 3571 * Will consider support rest of modes in future. 3572 * 3573 */ 3574 static const int adaptive_keyboard_modes[] = { 3575 HOME_MODE, 3576 /* WEB_BROWSER_MODE = 2, 3577 WEB_CONFERENCE_MODE = 3, */ 3578 FUNCTION_MODE 3579 }; 3580 3581 /* press Fn key a while second, it will switch to Function Mode. Then 3582 * release Fn key, previous mode be restored. 3583 */ 3584 static bool adaptive_keyboard_mode_is_saved; 3585 static int adaptive_keyboard_prev_mode; 3586 3587 static int adaptive_keyboard_get_mode(void) 3588 { 3589 int mode = 0; 3590 3591 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3592 pr_err("Cannot read adaptive keyboard mode\n"); 3593 return -EIO; 3594 } 3595 3596 return mode; 3597 } 3598 3599 static int adaptive_keyboard_set_mode(int new_mode) 3600 { 3601 if (new_mode < 0 || 3602 new_mode > LAYFLAT_MODE) 3603 return -EINVAL; 3604 3605 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3606 pr_err("Cannot set adaptive keyboard mode\n"); 3607 return -EIO; 3608 } 3609 3610 return 0; 3611 } 3612 3613 static int adaptive_keyboard_get_next_mode(int mode) 3614 { 3615 size_t i; 3616 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3617 3618 for (i = 0; i <= max_mode; i++) { 3619 if (adaptive_keyboard_modes[i] == mode) 3620 break; 3621 } 3622 3623 if (i >= max_mode) 3624 i = 0; 3625 else 3626 i++; 3627 3628 return adaptive_keyboard_modes[i]; 3629 } 3630 3631 static void adaptive_keyboard_change_row(void) 3632 { 3633 int mode; 3634 3635 if (adaptive_keyboard_mode_is_saved) { 3636 mode = adaptive_keyboard_prev_mode; 3637 adaptive_keyboard_mode_is_saved = false; 3638 } else { 3639 mode = adaptive_keyboard_get_mode(); 3640 if (mode < 0) 3641 return; 3642 mode = adaptive_keyboard_get_next_mode(mode); 3643 } 3644 3645 adaptive_keyboard_set_mode(mode); 3646 } 3647 3648 static void adaptive_keyboard_s_quickview_row(void) 3649 { 3650 int mode; 3651 3652 mode = adaptive_keyboard_get_mode(); 3653 if (mode < 0) 3654 return; 3655 3656 adaptive_keyboard_prev_mode = mode; 3657 adaptive_keyboard_mode_is_saved = true; 3658 3659 adaptive_keyboard_set_mode(FUNCTION_MODE); 3660 } 3661 3662 /* 0x1000-0x1FFF: key presses */ 3663 static bool hotkey_notify_hotkey(const u32 hkey, bool *send_acpi_ev) 3664 { 3665 /* Never send ACPI netlink events for original hotkeys (hkey: 0x1001 - 0x1020) */ 3666 if (hkey >= TP_HKEY_EV_ORIG_KEY_START && hkey <= TP_HKEY_EV_ORIG_KEY_END) { 3667 *send_acpi_ev = false; 3668 3669 /* Original hotkeys may be polled from NVRAM instead */ 3670 unsigned int scancode = hkey - TP_HKEY_EV_ORIG_KEY_START; 3671 if (hotkey_source_mask & (1 << scancode)) 3672 return true; 3673 } 3674 3675 return tpacpi_input_send_key(hkey, send_acpi_ev); 3676 } 3677 3678 /* 0x2000-0x2FFF: Wakeup reason */ 3679 static bool hotkey_notify_wakeup(const u32 hkey, bool *send_acpi_ev) 3680 { 3681 switch (hkey) { 3682 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3683 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3684 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3685 *send_acpi_ev = false; 3686 break; 3687 3688 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3689 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3690 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3691 *send_acpi_ev = false; 3692 break; 3693 3694 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3695 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3696 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3697 /* how to auto-heal: */ 3698 /* 2313: woke up from S3, go to S4/S5 */ 3699 /* 2413: woke up from S4, go to S5 */ 3700 break; 3701 3702 default: 3703 return false; 3704 } 3705 3706 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3707 pr_info("woke up due to a hot-unplug request...\n"); 3708 hotkey_wakeup_reason_notify_change(); 3709 } 3710 return true; 3711 } 3712 3713 /* 0x4000-0x4FFF: dock-related events */ 3714 static bool hotkey_notify_dockevent(const u32 hkey, bool *send_acpi_ev) 3715 { 3716 switch (hkey) { 3717 case TP_HKEY_EV_UNDOCK_ACK: 3718 /* ACPI undock operation completed after wakeup */ 3719 hotkey_autosleep_ack = 1; 3720 pr_info("undocked\n"); 3721 hotkey_wakeup_hotunplug_complete_notify_change(); 3722 return true; 3723 3724 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3725 pr_info("docked into hotplug port replicator\n"); 3726 return true; 3727 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3728 pr_info("undocked from hotplug port replicator\n"); 3729 return true; 3730 3731 /* 3732 * Deliberately ignore attaching and detaching the keybord cover to avoid 3733 * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events 3734 * to userspace. 3735 * 3736 * Please refer to the following thread for more information and a preliminary 3737 * implementation using the GTOP ("Get Tablet OPtions") interface that could be 3738 * extended to other attachment options of the ThinkPad X1 Tablet series, such as 3739 * the Pico cartridge dock module: 3740 * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/ 3741 */ 3742 case TP_HKEY_EV_KBD_COVER_ATTACH: 3743 case TP_HKEY_EV_KBD_COVER_DETACH: 3744 *send_acpi_ev = false; 3745 return true; 3746 3747 default: 3748 return false; 3749 } 3750 } 3751 3752 /* 0x5000-0x5FFF: human interface helpers */ 3753 static bool hotkey_notify_usrevent(const u32 hkey, bool *send_acpi_ev) 3754 { 3755 switch (hkey) { 3756 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 3757 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 3758 return true; 3759 3760 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 3761 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 3762 tpacpi_input_send_tabletsw(); 3763 hotkey_tablet_mode_notify_change(); 3764 *send_acpi_ev = false; 3765 return true; 3766 3767 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 3768 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 3769 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 3770 /* do not propagate these events */ 3771 *send_acpi_ev = false; 3772 return true; 3773 3774 default: 3775 return false; 3776 } 3777 } 3778 3779 static void thermal_dump_all_sensors(void); 3780 static void palmsensor_refresh(void); 3781 3782 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 3783 static bool hotkey_notify_6xxx(const u32 hkey, bool *send_acpi_ev) 3784 { 3785 switch (hkey) { 3786 case TP_HKEY_EV_THM_TABLE_CHANGED: 3787 pr_debug("EC reports: Thermal Table has changed\n"); 3788 /* recommended action: do nothing, we don't have 3789 * Lenovo ATM information */ 3790 return true; 3791 case TP_HKEY_EV_THM_CSM_COMPLETED: 3792 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 3793 /* Thermal event - pass on to event handler */ 3794 tpacpi_driver_event(hkey); 3795 return true; 3796 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 3797 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 3798 /* recommended action: do nothing, we don't have 3799 * Lenovo ATM information */ 3800 return true; 3801 case TP_HKEY_EV_ALARM_BAT_HOT: 3802 pr_crit("THERMAL ALARM: battery is too hot!\n"); 3803 /* recommended action: warn user through gui */ 3804 break; 3805 case TP_HKEY_EV_ALARM_BAT_XHOT: 3806 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 3807 /* recommended action: immediate sleep/hibernate */ 3808 break; 3809 case TP_HKEY_EV_ALARM_BAT_LIM_CHANGE: 3810 pr_debug("Battery Info: battery charge threshold changed\n"); 3811 /* User changed charging threshold. No action needed */ 3812 return true; 3813 case TP_HKEY_EV_ALARM_SENSOR_HOT: 3814 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 3815 /* recommended action: warn user through gui, that */ 3816 /* some internal component is too hot */ 3817 break; 3818 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 3819 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 3820 /* recommended action: immediate sleep/hibernate */ 3821 break; 3822 case TP_HKEY_EV_AC_CHANGED: 3823 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 3824 * AC status changed; can be triggered by plugging or 3825 * unplugging AC adapter, docking or undocking. */ 3826 3827 fallthrough; 3828 3829 case TP_HKEY_EV_KEY_NUMLOCK: 3830 case TP_HKEY_EV_KEY_FN: 3831 /* key press events, we just ignore them as long as the EC 3832 * is still reporting them in the normal keyboard stream */ 3833 *send_acpi_ev = false; 3834 return true; 3835 3836 case TP_HKEY_EV_KEY_FN_ESC: 3837 /* Get the media key status to force the status LED to update */ 3838 acpi_evalf(hkey_handle, NULL, "GMKS", "v"); 3839 *send_acpi_ev = false; 3840 return true; 3841 3842 case TP_HKEY_EV_TABLET_CHANGED: 3843 tpacpi_input_send_tabletsw(); 3844 hotkey_tablet_mode_notify_change(); 3845 *send_acpi_ev = false; 3846 return true; 3847 3848 case TP_HKEY_EV_PALM_DETECTED: 3849 case TP_HKEY_EV_PALM_UNDETECTED: 3850 /* palm detected - pass on to event handler */ 3851 palmsensor_refresh(); 3852 return true; 3853 3854 default: 3855 /* report simply as unknown, no sensor dump */ 3856 return false; 3857 } 3858 3859 thermal_dump_all_sensors(); 3860 return true; 3861 } 3862 3863 static bool hotkey_notify_8xxx(const u32 hkey, bool *send_acpi_ev) 3864 { 3865 switch (hkey) { 3866 case TP_HKEY_EV_TRACK_DOUBLETAP: 3867 if (tp_features.trackpoint_doubletap) 3868 tpacpi_input_send_key(hkey, send_acpi_ev); 3869 3870 return true; 3871 default: 3872 return false; 3873 } 3874 } 3875 3876 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 3877 { 3878 u32 hkey; 3879 bool send_acpi_ev; 3880 bool known_ev; 3881 3882 if (event != 0x80) { 3883 pr_err("unknown HKEY notification event %d\n", event); 3884 /* forward it to userspace, maybe it knows how to handle it */ 3885 acpi_bus_generate_netlink_event( 3886 ibm->acpi->device->pnp.device_class, 3887 dev_name(&ibm->acpi->device->dev), 3888 event, 0); 3889 return; 3890 } 3891 3892 while (1) { 3893 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 3894 pr_err("failed to retrieve HKEY event\n"); 3895 return; 3896 } 3897 3898 if (hkey == 0) { 3899 /* queue empty */ 3900 return; 3901 } 3902 3903 send_acpi_ev = true; 3904 known_ev = false; 3905 3906 switch (hkey >> 12) { 3907 case 1: 3908 /* 0x1000-0x1FFF: key presses */ 3909 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev); 3910 break; 3911 case 2: 3912 /* 0x2000-0x2FFF: Wakeup reason */ 3913 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev); 3914 break; 3915 case 3: 3916 /* 0x3000-0x3FFF: bay-related wakeups */ 3917 switch (hkey) { 3918 case TP_HKEY_EV_BAYEJ_ACK: 3919 hotkey_autosleep_ack = 1; 3920 pr_info("bay ejected\n"); 3921 hotkey_wakeup_hotunplug_complete_notify_change(); 3922 known_ev = true; 3923 break; 3924 case TP_HKEY_EV_OPTDRV_EJ: 3925 /* FIXME: kick libata if SATA link offline */ 3926 known_ev = true; 3927 break; 3928 } 3929 break; 3930 case 4: 3931 /* 0x4000-0x4FFF: dock-related events */ 3932 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev); 3933 break; 3934 case 5: 3935 /* 0x5000-0x5FFF: human interface helpers */ 3936 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev); 3937 break; 3938 case 6: 3939 /* 0x6000-0x6FFF: thermal alarms/notices and 3940 * keyboard events */ 3941 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev); 3942 break; 3943 case 7: 3944 /* 0x7000-0x7FFF: misc */ 3945 if (tp_features.hotkey_wlsw && 3946 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 3947 tpacpi_send_radiosw_update(); 3948 send_acpi_ev = false; 3949 known_ev = true; 3950 } 3951 break; 3952 case 8: 3953 /* 0x8000-0x8FFF: misc2 */ 3954 known_ev = hotkey_notify_8xxx(hkey, &send_acpi_ev); 3955 break; 3956 } 3957 if (!known_ev) { 3958 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 3959 pr_notice("please report the conditions when this event happened to %s\n", 3960 TPACPI_MAIL); 3961 } 3962 3963 /* netlink events */ 3964 if (send_acpi_ev) { 3965 acpi_bus_generate_netlink_event( 3966 ibm->acpi->device->pnp.device_class, 3967 dev_name(&ibm->acpi->device->dev), 3968 event, hkey); 3969 } 3970 } 3971 } 3972 3973 static void hotkey_suspend(void) 3974 { 3975 /* Do these on suspend, we get the events on early resume! */ 3976 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 3977 hotkey_autosleep_ack = 0; 3978 3979 /* save previous mode of adaptive keyboard of X1 Carbon */ 3980 if (tp_features.has_adaptive_kbd) { 3981 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 3982 "GTRW", "dd", 0)) { 3983 pr_err("Cannot read adaptive keyboard mode.\n"); 3984 } 3985 } 3986 } 3987 3988 static void hotkey_resume(void) 3989 { 3990 tpacpi_disable_brightness_delay(); 3991 3992 mutex_lock(&hotkey_mutex); 3993 if (hotkey_status_set(true) < 0 || 3994 hotkey_mask_set(hotkey_acpi_mask) < 0) 3995 pr_err("error while attempting to reset the event firmware interface\n"); 3996 mutex_unlock(&hotkey_mutex); 3997 3998 tpacpi_send_radiosw_update(); 3999 tpacpi_input_send_tabletsw(); 4000 hotkey_tablet_mode_notify_change(); 4001 hotkey_wakeup_reason_notify_change(); 4002 hotkey_wakeup_hotunplug_complete_notify_change(); 4003 hotkey_poll_setup_safe(false); 4004 4005 /* restore previous mode of adapive keyboard of X1 Carbon */ 4006 if (tp_features.has_adaptive_kbd) { 4007 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4008 adaptive_keyboard_prev_mode)) { 4009 pr_err("Cannot set adaptive keyboard mode.\n"); 4010 } 4011 } 4012 } 4013 4014 /* procfs -------------------------------------------------------------- */ 4015 static int hotkey_read(struct seq_file *m) 4016 { 4017 int res, status; 4018 4019 if (!tp_features.hotkey) { 4020 seq_printf(m, "status:\t\tnot supported\n"); 4021 return 0; 4022 } 4023 4024 if (mutex_lock_killable(&hotkey_mutex)) 4025 return -ERESTARTSYS; 4026 res = hotkey_status_get(&status); 4027 if (!res) 4028 res = hotkey_mask_get(); 4029 mutex_unlock(&hotkey_mutex); 4030 if (res) 4031 return res; 4032 4033 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status & BIT(0))); 4034 if (hotkey_all_mask) { 4035 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4036 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4037 } else { 4038 seq_printf(m, "mask:\t\tnot supported\n"); 4039 seq_printf(m, "commands:\tenable, disable, reset\n"); 4040 } 4041 4042 return 0; 4043 } 4044 4045 static void hotkey_enabledisable_warn(bool enable) 4046 { 4047 tpacpi_log_usertask("procfs hotkey enable/disable"); 4048 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4049 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4050 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4051 } 4052 4053 static int hotkey_write(char *buf) 4054 { 4055 int res; 4056 u32 mask; 4057 char *cmd; 4058 4059 if (!tp_features.hotkey) 4060 return -ENODEV; 4061 4062 if (mutex_lock_killable(&hotkey_mutex)) 4063 return -ERESTARTSYS; 4064 4065 mask = hotkey_user_mask; 4066 4067 res = 0; 4068 while ((cmd = strsep(&buf, ","))) { 4069 if (strstarts(cmd, "enable")) { 4070 hotkey_enabledisable_warn(1); 4071 } else if (strstarts(cmd, "disable")) { 4072 hotkey_enabledisable_warn(0); 4073 res = -EPERM; 4074 } else if (strstarts(cmd, "reset")) { 4075 mask = (hotkey_all_mask | hotkey_source_mask) 4076 & ~hotkey_reserved_mask; 4077 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4078 /* mask set */ 4079 } else if (sscanf(cmd, "%x", &mask) == 1) { 4080 /* mask set */ 4081 } else { 4082 res = -EINVAL; 4083 goto errexit; 4084 } 4085 } 4086 4087 if (!res) { 4088 tpacpi_disclose_usertask("procfs hotkey", 4089 "set mask to 0x%08x\n", mask); 4090 res = hotkey_user_mask_set(mask); 4091 } 4092 4093 errexit: 4094 mutex_unlock(&hotkey_mutex); 4095 return res; 4096 } 4097 4098 static const struct acpi_device_id ibm_htk_device_ids[] = { 4099 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4100 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4101 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4102 {"", 0}, 4103 }; 4104 4105 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4106 .hid = ibm_htk_device_ids, 4107 .notify = hotkey_notify, 4108 .handle = &hkey_handle, 4109 .type = ACPI_DEVICE_NOTIFY, 4110 }; 4111 4112 static struct ibm_struct hotkey_driver_data = { 4113 .name = "hotkey", 4114 .read = hotkey_read, 4115 .write = hotkey_write, 4116 .exit = hotkey_exit, 4117 .resume = hotkey_resume, 4118 .suspend = hotkey_suspend, 4119 .acpi = &ibm_hotkey_acpidriver, 4120 }; 4121 4122 /************************************************************************* 4123 * Bluetooth subdriver 4124 */ 4125 4126 enum { 4127 /* ACPI GBDC/SBDC bits */ 4128 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4129 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4130 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4131 0 = disable, 1 = enable */ 4132 }; 4133 4134 enum { 4135 /* ACPI \BLTH commands */ 4136 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4137 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4138 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4139 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4140 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4141 }; 4142 4143 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4144 4145 static int bluetooth_get_status(void) 4146 { 4147 int status; 4148 4149 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4150 if (dbg_bluetoothemul) 4151 return (tpacpi_bluetooth_emulstate) ? 4152 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4153 #endif 4154 4155 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4156 return -EIO; 4157 4158 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4159 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4160 } 4161 4162 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4163 { 4164 int status; 4165 4166 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s bluetooth\n", 4167 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4168 4169 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4170 if (dbg_bluetoothemul) { 4171 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4172 return 0; 4173 } 4174 #endif 4175 4176 if (state == TPACPI_RFK_RADIO_ON) 4177 status = TP_ACPI_BLUETOOTH_RADIOSSW 4178 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4179 else 4180 status = 0; 4181 4182 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4183 return -EIO; 4184 4185 return 0; 4186 } 4187 4188 /* sysfs bluetooth enable ---------------------------------------------- */ 4189 static ssize_t bluetooth_enable_show(struct device *dev, 4190 struct device_attribute *attr, 4191 char *buf) 4192 { 4193 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4194 attr, buf); 4195 } 4196 4197 static ssize_t bluetooth_enable_store(struct device *dev, 4198 struct device_attribute *attr, 4199 const char *buf, size_t count) 4200 { 4201 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4202 attr, buf, count); 4203 } 4204 4205 static DEVICE_ATTR_RW(bluetooth_enable); 4206 4207 /* --------------------------------------------------------------------- */ 4208 4209 static struct attribute *bluetooth_attributes[] = { 4210 &dev_attr_bluetooth_enable.attr, 4211 NULL 4212 }; 4213 4214 static umode_t bluetooth_attr_is_visible(struct kobject *kobj, 4215 struct attribute *attr, int n) 4216 { 4217 return tp_features.bluetooth ? attr->mode : 0; 4218 } 4219 4220 static const struct attribute_group bluetooth_attr_group = { 4221 .is_visible = bluetooth_attr_is_visible, 4222 .attrs = bluetooth_attributes, 4223 }; 4224 4225 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4226 .get_status = bluetooth_get_status, 4227 .set_status = bluetooth_set_status, 4228 }; 4229 4230 static void bluetooth_shutdown(void) 4231 { 4232 /* Order firmware to save current state to NVRAM */ 4233 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4234 TP_ACPI_BLTH_SAVE_STATE)) 4235 pr_notice("failed to save bluetooth state to NVRAM\n"); 4236 else 4237 vdbg_printk(TPACPI_DBG_RFKILL, 4238 "bluetooth state saved to NVRAM\n"); 4239 } 4240 4241 static void bluetooth_exit(void) 4242 { 4243 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4244 bluetooth_shutdown(); 4245 } 4246 4247 static const struct dmi_system_id fwbug_list[] __initconst = { 4248 { 4249 .ident = "ThinkPad E485", 4250 .driver_data = &quirk_btusb_bug, 4251 .matches = { 4252 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4253 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4254 }, 4255 }, 4256 { 4257 .ident = "ThinkPad E585", 4258 .driver_data = &quirk_btusb_bug, 4259 .matches = { 4260 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4261 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4262 }, 4263 }, 4264 { 4265 .ident = "ThinkPad A285 - 20MW", 4266 .driver_data = &quirk_btusb_bug, 4267 .matches = { 4268 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4269 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4270 }, 4271 }, 4272 { 4273 .ident = "ThinkPad A285 - 20MX", 4274 .driver_data = &quirk_btusb_bug, 4275 .matches = { 4276 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4277 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4278 }, 4279 }, 4280 { 4281 .ident = "ThinkPad A485 - 20MU", 4282 .driver_data = &quirk_btusb_bug, 4283 .matches = { 4284 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4285 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4286 }, 4287 }, 4288 { 4289 .ident = "ThinkPad A485 - 20MV", 4290 .driver_data = &quirk_btusb_bug, 4291 .matches = { 4292 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4293 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4294 }, 4295 }, 4296 {} 4297 }; 4298 4299 static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4300 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4301 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4302 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4303 {} 4304 }; 4305 4306 4307 static int __init have_bt_fwbug(void) 4308 { 4309 /* 4310 * Some AMD based ThinkPads have a firmware bug that calling 4311 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4312 */ 4313 if (tp_features.quirks && tp_features.quirks->btusb_bug && 4314 pci_dev_present(fwbug_cards_ids)) { 4315 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4316 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4317 return 1; 4318 } else 4319 return 0; 4320 } 4321 4322 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4323 { 4324 int res; 4325 int status = 0; 4326 4327 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4328 "initializing bluetooth subdriver\n"); 4329 4330 TPACPI_ACPIHANDLE_INIT(hkey); 4331 4332 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4333 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4334 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4335 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4336 4337 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4338 "bluetooth is %s, status 0x%02x\n", 4339 str_supported(tp_features.bluetooth), 4340 status); 4341 4342 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4343 if (dbg_bluetoothemul) { 4344 tp_features.bluetooth = 1; 4345 pr_info("bluetooth switch emulation enabled\n"); 4346 } else 4347 #endif 4348 if (tp_features.bluetooth && 4349 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4350 /* no bluetooth hardware present in system */ 4351 tp_features.bluetooth = 0; 4352 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4353 "bluetooth hardware not installed\n"); 4354 } 4355 4356 if (!tp_features.bluetooth) 4357 return -ENODEV; 4358 4359 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4360 &bluetooth_tprfk_ops, 4361 RFKILL_TYPE_BLUETOOTH, 4362 TPACPI_RFK_BLUETOOTH_SW_NAME, 4363 true); 4364 return res; 4365 } 4366 4367 /* procfs -------------------------------------------------------------- */ 4368 static int bluetooth_read(struct seq_file *m) 4369 { 4370 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4371 } 4372 4373 static int bluetooth_write(char *buf) 4374 { 4375 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4376 } 4377 4378 static struct ibm_struct bluetooth_driver_data = { 4379 .name = "bluetooth", 4380 .read = bluetooth_read, 4381 .write = bluetooth_write, 4382 .exit = bluetooth_exit, 4383 .shutdown = bluetooth_shutdown, 4384 }; 4385 4386 /************************************************************************* 4387 * Wan subdriver 4388 */ 4389 4390 enum { 4391 /* ACPI GWAN/SWAN bits */ 4392 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4393 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4394 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4395 0 = disable, 1 = enable */ 4396 }; 4397 4398 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4399 4400 static int wan_get_status(void) 4401 { 4402 int status; 4403 4404 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4405 if (dbg_wwanemul) 4406 return (tpacpi_wwan_emulstate) ? 4407 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4408 #endif 4409 4410 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4411 return -EIO; 4412 4413 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4414 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4415 } 4416 4417 static int wan_set_status(enum tpacpi_rfkill_state state) 4418 { 4419 int status; 4420 4421 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s wwan\n", 4422 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4423 4424 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4425 if (dbg_wwanemul) { 4426 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4427 return 0; 4428 } 4429 #endif 4430 4431 if (state == TPACPI_RFK_RADIO_ON) 4432 status = TP_ACPI_WANCARD_RADIOSSW 4433 | TP_ACPI_WANCARD_RESUMECTRL; 4434 else 4435 status = 0; 4436 4437 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4438 return -EIO; 4439 4440 return 0; 4441 } 4442 4443 /* sysfs wan enable ---------------------------------------------------- */ 4444 static ssize_t wan_enable_show(struct device *dev, 4445 struct device_attribute *attr, 4446 char *buf) 4447 { 4448 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4449 attr, buf); 4450 } 4451 4452 static ssize_t wan_enable_store(struct device *dev, 4453 struct device_attribute *attr, 4454 const char *buf, size_t count) 4455 { 4456 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4457 attr, buf, count); 4458 } 4459 4460 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4461 wan_enable_show, wan_enable_store); 4462 4463 /* --------------------------------------------------------------------- */ 4464 4465 static struct attribute *wan_attributes[] = { 4466 &dev_attr_wwan_enable.attr, 4467 NULL 4468 }; 4469 4470 static umode_t wan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 4471 int n) 4472 { 4473 return tp_features.wan ? attr->mode : 0; 4474 } 4475 4476 static const struct attribute_group wan_attr_group = { 4477 .is_visible = wan_attr_is_visible, 4478 .attrs = wan_attributes, 4479 }; 4480 4481 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4482 .get_status = wan_get_status, 4483 .set_status = wan_set_status, 4484 }; 4485 4486 static void wan_shutdown(void) 4487 { 4488 /* Order firmware to save current state to NVRAM */ 4489 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4490 TP_ACPI_WGSV_SAVE_STATE)) 4491 pr_notice("failed to save WWAN state to NVRAM\n"); 4492 else 4493 vdbg_printk(TPACPI_DBG_RFKILL, 4494 "WWAN state saved to NVRAM\n"); 4495 } 4496 4497 static void wan_exit(void) 4498 { 4499 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4500 wan_shutdown(); 4501 } 4502 4503 static int __init wan_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 wan subdriver\n"); 4510 4511 TPACPI_ACPIHANDLE_INIT(hkey); 4512 4513 tp_features.wan = hkey_handle && 4514 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4515 4516 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4517 "wan is %s, status 0x%02x\n", 4518 str_supported(tp_features.wan), 4519 status); 4520 4521 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4522 if (dbg_wwanemul) { 4523 tp_features.wan = 1; 4524 pr_info("wwan switch emulation enabled\n"); 4525 } else 4526 #endif 4527 if (tp_features.wan && 4528 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4529 /* no wan hardware present in system */ 4530 tp_features.wan = 0; 4531 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4532 "wan hardware not installed\n"); 4533 } 4534 4535 if (!tp_features.wan) 4536 return -ENODEV; 4537 4538 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4539 &wan_tprfk_ops, 4540 RFKILL_TYPE_WWAN, 4541 TPACPI_RFK_WWAN_SW_NAME, 4542 true); 4543 return res; 4544 } 4545 4546 /* procfs -------------------------------------------------------------- */ 4547 static int wan_read(struct seq_file *m) 4548 { 4549 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4550 } 4551 4552 static int wan_write(char *buf) 4553 { 4554 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4555 } 4556 4557 static struct ibm_struct wan_driver_data = { 4558 .name = "wan", 4559 .read = wan_read, 4560 .write = wan_write, 4561 .exit = wan_exit, 4562 .shutdown = wan_shutdown, 4563 }; 4564 4565 /************************************************************************* 4566 * UWB subdriver 4567 */ 4568 4569 enum { 4570 /* ACPI GUWB/SUWB bits */ 4571 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4572 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4573 }; 4574 4575 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4576 4577 static int uwb_get_status(void) 4578 { 4579 int status; 4580 4581 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4582 if (dbg_uwbemul) 4583 return (tpacpi_uwb_emulstate) ? 4584 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4585 #endif 4586 4587 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4588 return -EIO; 4589 4590 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4591 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4592 } 4593 4594 static int uwb_set_status(enum tpacpi_rfkill_state state) 4595 { 4596 int status; 4597 4598 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s UWB\n", 4599 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4600 4601 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4602 if (dbg_uwbemul) { 4603 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4604 return 0; 4605 } 4606 #endif 4607 4608 if (state == TPACPI_RFK_RADIO_ON) 4609 status = TP_ACPI_UWB_RADIOSSW; 4610 else 4611 status = 0; 4612 4613 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4614 return -EIO; 4615 4616 return 0; 4617 } 4618 4619 /* --------------------------------------------------------------------- */ 4620 4621 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4622 .get_status = uwb_get_status, 4623 .set_status = uwb_set_status, 4624 }; 4625 4626 static void uwb_exit(void) 4627 { 4628 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4629 } 4630 4631 static int __init uwb_init(struct ibm_init_struct *iibm) 4632 { 4633 int res; 4634 int status = 0; 4635 4636 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4637 "initializing uwb subdriver\n"); 4638 4639 TPACPI_ACPIHANDLE_INIT(hkey); 4640 4641 tp_features.uwb = hkey_handle && 4642 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4643 4644 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4645 "uwb is %s, status 0x%02x\n", 4646 str_supported(tp_features.uwb), 4647 status); 4648 4649 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4650 if (dbg_uwbemul) { 4651 tp_features.uwb = 1; 4652 pr_info("uwb switch emulation enabled\n"); 4653 } else 4654 #endif 4655 if (tp_features.uwb && 4656 !(status & TP_ACPI_UWB_HWPRESENT)) { 4657 /* no uwb hardware present in system */ 4658 tp_features.uwb = 0; 4659 dbg_printk(TPACPI_DBG_INIT, 4660 "uwb hardware not installed\n"); 4661 } 4662 4663 if (!tp_features.uwb) 4664 return -ENODEV; 4665 4666 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4667 &uwb_tprfk_ops, 4668 RFKILL_TYPE_UWB, 4669 TPACPI_RFK_UWB_SW_NAME, 4670 false); 4671 return res; 4672 } 4673 4674 static struct ibm_struct uwb_driver_data = { 4675 .name = "uwb", 4676 .exit = uwb_exit, 4677 .flags.experimental = 1, 4678 }; 4679 4680 /************************************************************************* 4681 * Video subdriver 4682 */ 4683 4684 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4685 4686 enum video_access_mode { 4687 TPACPI_VIDEO_NONE = 0, 4688 TPACPI_VIDEO_570, /* 570 */ 4689 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4690 TPACPI_VIDEO_NEW, /* all others */ 4691 }; 4692 4693 enum { /* video status flags, based on VIDEO_570 */ 4694 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4695 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4696 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4697 }; 4698 4699 enum { /* TPACPI_VIDEO_570 constants */ 4700 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4701 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4702 * video_status_flags */ 4703 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4704 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4705 }; 4706 4707 static enum video_access_mode video_supported; 4708 static int video_orig_autosw; 4709 4710 static int video_autosw_get(void); 4711 static int video_autosw_set(int enable); 4712 4713 TPACPI_HANDLE(vid, root, 4714 "\\_SB.PCI.AGP.VGA", /* 570 */ 4715 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4716 "\\_SB.PCI0.VID0", /* 770e */ 4717 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4718 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4719 "\\_SB.PCI0.AGP.VID", /* all others */ 4720 ); /* R30, R31 */ 4721 4722 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4723 4724 static int __init video_init(struct ibm_init_struct *iibm) 4725 { 4726 int ivga; 4727 4728 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4729 4730 TPACPI_ACPIHANDLE_INIT(vid); 4731 if (tpacpi_is_ibm()) 4732 TPACPI_ACPIHANDLE_INIT(vid2); 4733 4734 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4735 /* G41, assume IVGA doesn't change */ 4736 vid_handle = vid2_handle; 4737 4738 if (!vid_handle) 4739 /* video switching not supported on R30, R31 */ 4740 video_supported = TPACPI_VIDEO_NONE; 4741 else if (tpacpi_is_ibm() && 4742 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4743 /* 570 */ 4744 video_supported = TPACPI_VIDEO_570; 4745 else if (tpacpi_is_ibm() && 4746 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4747 /* 600e/x, 770e, 770x */ 4748 video_supported = TPACPI_VIDEO_770; 4749 else 4750 /* all others */ 4751 video_supported = TPACPI_VIDEO_NEW; 4752 4753 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4754 str_supported(video_supported != TPACPI_VIDEO_NONE), 4755 video_supported); 4756 4757 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : -ENODEV; 4758 } 4759 4760 static void video_exit(void) 4761 { 4762 dbg_printk(TPACPI_DBG_EXIT, 4763 "restoring original video autoswitch mode\n"); 4764 if (video_autosw_set(video_orig_autosw)) 4765 pr_err("error while trying to restore original video autoswitch mode\n"); 4766 } 4767 4768 static int video_outputsw_get(void) 4769 { 4770 int status = 0; 4771 int i; 4772 4773 switch (video_supported) { 4774 case TPACPI_VIDEO_570: 4775 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 4776 TP_ACPI_VIDEO_570_PHSCMD)) 4777 return -EIO; 4778 status = i & TP_ACPI_VIDEO_570_PHSMASK; 4779 break; 4780 case TPACPI_VIDEO_770: 4781 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 4782 return -EIO; 4783 if (i) 4784 status |= TP_ACPI_VIDEO_S_LCD; 4785 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 4786 return -EIO; 4787 if (i) 4788 status |= TP_ACPI_VIDEO_S_CRT; 4789 break; 4790 case TPACPI_VIDEO_NEW: 4791 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 4792 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 4793 return -EIO; 4794 if (i) 4795 status |= TP_ACPI_VIDEO_S_CRT; 4796 4797 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 4798 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 4799 return -EIO; 4800 if (i) 4801 status |= TP_ACPI_VIDEO_S_LCD; 4802 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 4803 return -EIO; 4804 if (i) 4805 status |= TP_ACPI_VIDEO_S_DVI; 4806 break; 4807 default: 4808 return -ENOSYS; 4809 } 4810 4811 return status; 4812 } 4813 4814 static int video_outputsw_set(int status) 4815 { 4816 int autosw; 4817 int res = 0; 4818 4819 switch (video_supported) { 4820 case TPACPI_VIDEO_570: 4821 res = acpi_evalf(NULL, NULL, 4822 "\\_SB.PHS2", "vdd", 4823 TP_ACPI_VIDEO_570_PHS2CMD, 4824 status | TP_ACPI_VIDEO_570_PHS2SET); 4825 break; 4826 case TPACPI_VIDEO_770: 4827 autosw = video_autosw_get(); 4828 if (autosw < 0) 4829 return autosw; 4830 4831 res = video_autosw_set(1); 4832 if (res) 4833 return res; 4834 res = acpi_evalf(vid_handle, NULL, 4835 "ASWT", "vdd", status * 0x100, 0); 4836 if (!autosw && video_autosw_set(autosw)) { 4837 pr_err("video auto-switch left enabled due to error\n"); 4838 return -EIO; 4839 } 4840 break; 4841 case TPACPI_VIDEO_NEW: 4842 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 4843 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 4844 break; 4845 default: 4846 return -ENOSYS; 4847 } 4848 4849 return (res) ? 0 : -EIO; 4850 } 4851 4852 static int video_autosw_get(void) 4853 { 4854 int autosw = 0; 4855 4856 switch (video_supported) { 4857 case TPACPI_VIDEO_570: 4858 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 4859 return -EIO; 4860 break; 4861 case TPACPI_VIDEO_770: 4862 case TPACPI_VIDEO_NEW: 4863 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 4864 return -EIO; 4865 break; 4866 default: 4867 return -ENOSYS; 4868 } 4869 4870 return autosw & 1; 4871 } 4872 4873 static int video_autosw_set(int enable) 4874 { 4875 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 4876 return -EIO; 4877 return 0; 4878 } 4879 4880 static int video_outputsw_cycle(void) 4881 { 4882 int autosw = video_autosw_get(); 4883 int res; 4884 4885 if (autosw < 0) 4886 return autosw; 4887 4888 switch (video_supported) { 4889 case TPACPI_VIDEO_570: 4890 res = video_autosw_set(1); 4891 if (res) 4892 return res; 4893 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 4894 break; 4895 case TPACPI_VIDEO_770: 4896 case TPACPI_VIDEO_NEW: 4897 res = video_autosw_set(1); 4898 if (res) 4899 return res; 4900 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 4901 break; 4902 default: 4903 return -ENOSYS; 4904 } 4905 if (!autosw && video_autosw_set(autosw)) { 4906 pr_err("video auto-switch left enabled due to error\n"); 4907 return -EIO; 4908 } 4909 4910 return (res) ? 0 : -EIO; 4911 } 4912 4913 static int video_expand_toggle(void) 4914 { 4915 switch (video_supported) { 4916 case TPACPI_VIDEO_570: 4917 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 4918 0 : -EIO; 4919 case TPACPI_VIDEO_770: 4920 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 4921 0 : -EIO; 4922 case TPACPI_VIDEO_NEW: 4923 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 4924 0 : -EIO; 4925 default: 4926 return -ENOSYS; 4927 } 4928 /* not reached */ 4929 } 4930 4931 static int video_read(struct seq_file *m) 4932 { 4933 int status, autosw; 4934 4935 if (video_supported == TPACPI_VIDEO_NONE) { 4936 seq_printf(m, "status:\t\tnot supported\n"); 4937 return 0; 4938 } 4939 4940 /* Even reads can crash X.org, so... */ 4941 if (!capable(CAP_SYS_ADMIN)) 4942 return -EPERM; 4943 4944 status = video_outputsw_get(); 4945 if (status < 0) 4946 return status; 4947 4948 autosw = video_autosw_get(); 4949 if (autosw < 0) 4950 return autosw; 4951 4952 seq_printf(m, "status:\t\tsupported\n"); 4953 seq_printf(m, "lcd:\t\t%s\n", str_enabled_disabled(status & BIT(0))); 4954 seq_printf(m, "crt:\t\t%s\n", str_enabled_disabled(status & BIT(1))); 4955 if (video_supported == TPACPI_VIDEO_NEW) 4956 seq_printf(m, "dvi:\t\t%s\n", str_enabled_disabled(status & BIT(3))); 4957 seq_printf(m, "auto:\t\t%s\n", str_enabled_disabled(autosw & BIT(0))); 4958 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 4959 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 4960 if (video_supported == TPACPI_VIDEO_NEW) 4961 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 4962 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 4963 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 4964 4965 return 0; 4966 } 4967 4968 static int video_write(char *buf) 4969 { 4970 char *cmd; 4971 int enable, disable, status; 4972 int res; 4973 4974 if (video_supported == TPACPI_VIDEO_NONE) 4975 return -ENODEV; 4976 4977 /* Even reads can crash X.org, let alone writes... */ 4978 if (!capable(CAP_SYS_ADMIN)) 4979 return -EPERM; 4980 4981 enable = 0; 4982 disable = 0; 4983 4984 while ((cmd = strsep(&buf, ","))) { 4985 if (strstarts(cmd, "lcd_enable")) { 4986 enable |= TP_ACPI_VIDEO_S_LCD; 4987 } else if (strstarts(cmd, "lcd_disable")) { 4988 disable |= TP_ACPI_VIDEO_S_LCD; 4989 } else if (strstarts(cmd, "crt_enable")) { 4990 enable |= TP_ACPI_VIDEO_S_CRT; 4991 } else if (strstarts(cmd, "crt_disable")) { 4992 disable |= TP_ACPI_VIDEO_S_CRT; 4993 } else if (video_supported == TPACPI_VIDEO_NEW && 4994 strstarts(cmd, "dvi_enable")) { 4995 enable |= TP_ACPI_VIDEO_S_DVI; 4996 } else if (video_supported == TPACPI_VIDEO_NEW && 4997 strstarts(cmd, "dvi_disable")) { 4998 disable |= TP_ACPI_VIDEO_S_DVI; 4999 } else if (strstarts(cmd, "auto_enable")) { 5000 res = video_autosw_set(1); 5001 if (res) 5002 return res; 5003 } else if (strstarts(cmd, "auto_disable")) { 5004 res = video_autosw_set(0); 5005 if (res) 5006 return res; 5007 } else if (strstarts(cmd, "video_switch")) { 5008 res = video_outputsw_cycle(); 5009 if (res) 5010 return res; 5011 } else if (strstarts(cmd, "expand_toggle")) { 5012 res = video_expand_toggle(); 5013 if (res) 5014 return res; 5015 } else 5016 return -EINVAL; 5017 } 5018 5019 if (enable || disable) { 5020 status = video_outputsw_get(); 5021 if (status < 0) 5022 return status; 5023 res = video_outputsw_set((status & ~disable) | enable); 5024 if (res) 5025 return res; 5026 } 5027 5028 return 0; 5029 } 5030 5031 static struct ibm_struct video_driver_data = { 5032 .name = "video", 5033 .read = video_read, 5034 .write = video_write, 5035 .exit = video_exit, 5036 }; 5037 5038 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5039 5040 /************************************************************************* 5041 * Keyboard backlight subdriver 5042 */ 5043 5044 static enum led_brightness kbdlight_brightness; 5045 static DEFINE_MUTEX(kbdlight_mutex); 5046 5047 static int kbdlight_set_level(int level) 5048 { 5049 int ret = 0; 5050 5051 if (!hkey_handle) 5052 return -ENXIO; 5053 5054 mutex_lock(&kbdlight_mutex); 5055 5056 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5057 ret = -EIO; 5058 else 5059 kbdlight_brightness = level; 5060 5061 mutex_unlock(&kbdlight_mutex); 5062 5063 return ret; 5064 } 5065 5066 static int kbdlight_get_level(void) 5067 { 5068 int status = 0; 5069 5070 if (!hkey_handle) 5071 return -ENXIO; 5072 5073 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5074 return -EIO; 5075 5076 if (status < 0) 5077 return status; 5078 5079 return status & 0x3; 5080 } 5081 5082 static bool kbdlight_is_supported(void) 5083 { 5084 int status = 0; 5085 5086 if (!hkey_handle) 5087 return false; 5088 5089 if (!acpi_has_method(hkey_handle, "MLCG")) { 5090 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5091 return false; 5092 } 5093 5094 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5095 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5096 return false; 5097 } 5098 5099 if (status < 0) { 5100 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5101 return false; 5102 } 5103 5104 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5105 /* 5106 * Guessed test for keyboard backlight: 5107 * 5108 * Machines with backlight keyboard return: 5109 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5110 * b110100010010000000XX - ThinkPad x230 5111 * b010100000010000000XX - ThinkPad x240 5112 * b010100000010000000XX - ThinkPad W541 5113 * (XX is current backlight level) 5114 * 5115 * Machines without backlight keyboard return: 5116 * b10100001000000000000 - ThinkPad x230 5117 * b10110001000000000000 - ThinkPad E430 5118 * b00000000000000000000 - ThinkPad E450 5119 * 5120 * Candidate BITs for detection test (XOR): 5121 * b01000000001000000000 5122 * ^ 5123 */ 5124 return status & BIT(9); 5125 } 5126 5127 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5128 enum led_brightness brightness) 5129 { 5130 return kbdlight_set_level(brightness); 5131 } 5132 5133 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5134 { 5135 int level; 5136 5137 level = kbdlight_get_level(); 5138 if (level < 0) 5139 return 0; 5140 5141 return level; 5142 } 5143 5144 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5145 .led_classdev = { 5146 .name = "tpacpi::kbd_backlight", 5147 .max_brightness = 2, 5148 .flags = LED_BRIGHT_HW_CHANGED, 5149 .brightness_set_blocking = &kbdlight_sysfs_set, 5150 .brightness_get = &kbdlight_sysfs_get, 5151 } 5152 }; 5153 5154 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5155 { 5156 int rc; 5157 5158 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5159 5160 TPACPI_ACPIHANDLE_INIT(hkey); 5161 5162 if (!kbdlight_is_supported()) { 5163 tp_features.kbdlight = 0; 5164 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5165 return -ENODEV; 5166 } 5167 5168 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5169 tp_features.kbdlight = 1; 5170 5171 rc = led_classdev_register(&tpacpi_pdev->dev, 5172 &tpacpi_led_kbdlight.led_classdev); 5173 if (rc < 0) { 5174 tp_features.kbdlight = 0; 5175 return rc; 5176 } 5177 5178 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5179 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5180 return 0; 5181 } 5182 5183 static void kbdlight_exit(void) 5184 { 5185 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5186 } 5187 5188 static int kbdlight_set_level_and_update(int level) 5189 { 5190 int ret; 5191 struct led_classdev *led_cdev; 5192 5193 ret = kbdlight_set_level(level); 5194 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5195 5196 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5197 led_cdev->brightness = level; 5198 5199 return ret; 5200 } 5201 5202 static int kbdlight_read(struct seq_file *m) 5203 { 5204 int level; 5205 5206 if (!tp_features.kbdlight) { 5207 seq_printf(m, "status:\t\tnot supported\n"); 5208 } else { 5209 level = kbdlight_get_level(); 5210 if (level < 0) 5211 seq_printf(m, "status:\t\terror %d\n", level); 5212 else 5213 seq_printf(m, "status:\t\t%d\n", level); 5214 seq_printf(m, "commands:\t0, 1, 2\n"); 5215 } 5216 5217 return 0; 5218 } 5219 5220 static int kbdlight_write(char *buf) 5221 { 5222 char *cmd; 5223 int res, level = -EINVAL; 5224 5225 if (!tp_features.kbdlight) 5226 return -ENODEV; 5227 5228 while ((cmd = strsep(&buf, ","))) { 5229 res = kstrtoint(cmd, 10, &level); 5230 if (res < 0) 5231 return res; 5232 } 5233 5234 if (level >= 3 || level < 0) 5235 return -EINVAL; 5236 5237 return kbdlight_set_level_and_update(level); 5238 } 5239 5240 static void kbdlight_suspend(void) 5241 { 5242 struct led_classdev *led_cdev; 5243 5244 if (!tp_features.kbdlight) 5245 return; 5246 5247 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5248 led_update_brightness(led_cdev); 5249 led_classdev_suspend(led_cdev); 5250 } 5251 5252 static void kbdlight_resume(void) 5253 { 5254 if (!tp_features.kbdlight) 5255 return; 5256 5257 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5258 } 5259 5260 static struct ibm_struct kbdlight_driver_data = { 5261 .name = "kbdlight", 5262 .read = kbdlight_read, 5263 .write = kbdlight_write, 5264 .suspend = kbdlight_suspend, 5265 .resume = kbdlight_resume, 5266 .exit = kbdlight_exit, 5267 }; 5268 5269 /************************************************************************* 5270 * Light (thinklight) subdriver 5271 */ 5272 5273 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5274 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5275 5276 static int light_get_status(void) 5277 { 5278 int status = 0; 5279 5280 if (tp_features.light_status) { 5281 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5282 return -EIO; 5283 return (!!status); 5284 } 5285 5286 return -ENXIO; 5287 } 5288 5289 static int light_set_status(int status) 5290 { 5291 int rc; 5292 5293 if (tp_features.light) { 5294 if (cmos_handle) { 5295 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5296 (status) ? 5297 TP_CMOS_THINKLIGHT_ON : 5298 TP_CMOS_THINKLIGHT_OFF); 5299 } else { 5300 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5301 (status) ? 1 : 0); 5302 } 5303 return (rc) ? 0 : -EIO; 5304 } 5305 5306 return -ENXIO; 5307 } 5308 5309 static int light_sysfs_set(struct led_classdev *led_cdev, 5310 enum led_brightness brightness) 5311 { 5312 return light_set_status((brightness != LED_OFF) ? 5313 TPACPI_LED_ON : TPACPI_LED_OFF); 5314 } 5315 5316 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5317 { 5318 return (light_get_status() == 1) ? LED_ON : LED_OFF; 5319 } 5320 5321 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5322 .led_classdev = { 5323 .name = "tpacpi::thinklight", 5324 .max_brightness = 1, 5325 .brightness_set_blocking = &light_sysfs_set, 5326 .brightness_get = &light_sysfs_get, 5327 } 5328 }; 5329 5330 static int __init light_init(struct ibm_init_struct *iibm) 5331 { 5332 int rc; 5333 5334 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5335 5336 if (tpacpi_is_ibm()) { 5337 TPACPI_ACPIHANDLE_INIT(ledb); 5338 TPACPI_ACPIHANDLE_INIT(lght); 5339 } 5340 TPACPI_ACPIHANDLE_INIT(cmos); 5341 5342 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5343 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5344 5345 if (tp_features.light) 5346 /* light status not supported on 5347 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5348 tp_features.light_status = 5349 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5350 5351 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5352 str_supported(tp_features.light), 5353 str_supported(tp_features.light_status)); 5354 5355 if (!tp_features.light) 5356 return -ENODEV; 5357 5358 rc = led_classdev_register(&tpacpi_pdev->dev, 5359 &tpacpi_led_thinklight.led_classdev); 5360 5361 if (rc < 0) { 5362 tp_features.light = 0; 5363 tp_features.light_status = 0; 5364 } else { 5365 rc = 0; 5366 } 5367 5368 return rc; 5369 } 5370 5371 static void light_exit(void) 5372 { 5373 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5374 } 5375 5376 static int light_read(struct seq_file *m) 5377 { 5378 int status; 5379 5380 if (!tp_features.light) { 5381 seq_printf(m, "status:\t\tnot supported\n"); 5382 } else if (!tp_features.light_status) { 5383 seq_printf(m, "status:\t\tunknown\n"); 5384 seq_printf(m, "commands:\ton, off\n"); 5385 } else { 5386 status = light_get_status(); 5387 if (status < 0) 5388 return status; 5389 seq_printf(m, "status:\t\t%s\n", str_on_off(status & BIT(0))); 5390 seq_printf(m, "commands:\ton, off\n"); 5391 } 5392 5393 return 0; 5394 } 5395 5396 static int light_write(char *buf) 5397 { 5398 char *cmd; 5399 int newstatus = 0; 5400 5401 if (!tp_features.light) 5402 return -ENODEV; 5403 5404 while ((cmd = strsep(&buf, ","))) { 5405 if (strstarts(cmd, "on")) { 5406 newstatus = 1; 5407 } else if (strstarts(cmd, "off")) { 5408 newstatus = 0; 5409 } else 5410 return -EINVAL; 5411 } 5412 5413 return light_set_status(newstatus); 5414 } 5415 5416 static struct ibm_struct light_driver_data = { 5417 .name = "light", 5418 .read = light_read, 5419 .write = light_write, 5420 .exit = light_exit, 5421 }; 5422 5423 /************************************************************************* 5424 * CMOS subdriver 5425 */ 5426 5427 /* sysfs cmos_command -------------------------------------------------- */ 5428 static ssize_t cmos_command_store(struct device *dev, 5429 struct device_attribute *attr, 5430 const char *buf, size_t count) 5431 { 5432 unsigned long cmos_cmd; 5433 int res; 5434 5435 if (parse_strtoul(buf, 21, &cmos_cmd)) 5436 return -EINVAL; 5437 5438 res = issue_thinkpad_cmos_command(cmos_cmd); 5439 return (res) ? res : count; 5440 } 5441 5442 static DEVICE_ATTR_WO(cmos_command); 5443 5444 static struct attribute *cmos_attributes[] = { 5445 &dev_attr_cmos_command.attr, 5446 NULL 5447 }; 5448 5449 static umode_t cmos_attr_is_visible(struct kobject *kobj, 5450 struct attribute *attr, int n) 5451 { 5452 return cmos_handle ? attr->mode : 0; 5453 } 5454 5455 static const struct attribute_group cmos_attr_group = { 5456 .is_visible = cmos_attr_is_visible, 5457 .attrs = cmos_attributes, 5458 }; 5459 5460 /* --------------------------------------------------------------------- */ 5461 5462 static int __init cmos_init(struct ibm_init_struct *iibm) 5463 { 5464 vdbg_printk(TPACPI_DBG_INIT, 5465 "initializing cmos commands subdriver\n"); 5466 5467 TPACPI_ACPIHANDLE_INIT(cmos); 5468 5469 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5470 str_supported(cmos_handle != NULL)); 5471 5472 return cmos_handle ? 0 : -ENODEV; 5473 } 5474 5475 static int cmos_read(struct seq_file *m) 5476 { 5477 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5478 R30, R31, T20-22, X20-21 */ 5479 if (!cmos_handle) 5480 seq_printf(m, "status:\t\tnot supported\n"); 5481 else { 5482 seq_printf(m, "status:\t\tsupported\n"); 5483 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5484 } 5485 5486 return 0; 5487 } 5488 5489 static int cmos_write(char *buf) 5490 { 5491 char *cmd; 5492 int cmos_cmd, res; 5493 5494 while ((cmd = strsep(&buf, ","))) { 5495 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5496 cmos_cmd >= 0 && cmos_cmd <= 21) { 5497 /* cmos_cmd set */ 5498 } else 5499 return -EINVAL; 5500 5501 res = issue_thinkpad_cmos_command(cmos_cmd); 5502 if (res) 5503 return res; 5504 } 5505 5506 return 0; 5507 } 5508 5509 static struct ibm_struct cmos_driver_data = { 5510 .name = "cmos", 5511 .read = cmos_read, 5512 .write = cmos_write, 5513 }; 5514 5515 /************************************************************************* 5516 * LED subdriver 5517 */ 5518 5519 enum led_access_mode { 5520 TPACPI_LED_NONE = 0, 5521 TPACPI_LED_570, /* 570 */ 5522 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5523 TPACPI_LED_NEW, /* all others */ 5524 }; 5525 5526 enum { /* For TPACPI_LED_OLD */ 5527 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5528 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5529 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5530 }; 5531 5532 static enum led_access_mode led_supported; 5533 5534 static acpi_handle led_handle; 5535 5536 #define TPACPI_LED_NUMLEDS 16 5537 static struct tpacpi_led_classdev *tpacpi_leds; 5538 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5539 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5540 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5541 "tpacpi::power", 5542 "tpacpi:orange:batt", 5543 "tpacpi:green:batt", 5544 "tpacpi::dock_active", 5545 "tpacpi::bay_active", 5546 "tpacpi::dock_batt", 5547 "tpacpi::unknown_led", 5548 "tpacpi::standby", 5549 "tpacpi::dock_status1", 5550 "tpacpi::dock_status2", 5551 "tpacpi::lid_logo_dot", 5552 "tpacpi::unknown_led3", 5553 "tpacpi::thinkvantage", 5554 }; 5555 #define TPACPI_SAFE_LEDS 0x1481U 5556 5557 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5558 { 5559 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5560 return false; 5561 #else 5562 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5563 #endif 5564 } 5565 5566 static int led_get_status(const unsigned int led) 5567 { 5568 int status; 5569 enum led_status_t led_s; 5570 5571 switch (led_supported) { 5572 case TPACPI_LED_570: 5573 if (!acpi_evalf(ec_handle, 5574 &status, "GLED", "dd", 1 << led)) 5575 return -EIO; 5576 led_s = (status == 0) ? 5577 TPACPI_LED_OFF : 5578 ((status == 1) ? 5579 TPACPI_LED_ON : 5580 TPACPI_LED_BLINK); 5581 tpacpi_led_state_cache[led] = led_s; 5582 return led_s; 5583 default: 5584 return -ENXIO; 5585 } 5586 5587 /* not reached */ 5588 } 5589 5590 static int led_set_status(const unsigned int led, 5591 const enum led_status_t ledstatus) 5592 { 5593 /* off, on, blink. Index is led_status_t */ 5594 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5595 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5596 5597 int rc = 0; 5598 5599 switch (led_supported) { 5600 case TPACPI_LED_570: 5601 /* 570 */ 5602 if (unlikely(led > 7)) 5603 return -EINVAL; 5604 if (unlikely(tpacpi_is_led_restricted(led))) 5605 return -EPERM; 5606 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5607 (1 << led), led_sled_arg1[ledstatus])) 5608 return -EIO; 5609 break; 5610 case TPACPI_LED_OLD: 5611 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5612 if (unlikely(led > 7)) 5613 return -EINVAL; 5614 if (unlikely(tpacpi_is_led_restricted(led))) 5615 return -EPERM; 5616 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5617 if (rc >= 0) 5618 rc = ec_write(TPACPI_LED_EC_HLBL, 5619 (ledstatus == TPACPI_LED_BLINK) << led); 5620 if (rc >= 0) 5621 rc = ec_write(TPACPI_LED_EC_HLCL, 5622 (ledstatus != TPACPI_LED_OFF) << led); 5623 break; 5624 case TPACPI_LED_NEW: 5625 /* all others */ 5626 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5627 return -EINVAL; 5628 if (unlikely(tpacpi_is_led_restricted(led))) 5629 return -EPERM; 5630 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5631 led, led_led_arg1[ledstatus])) 5632 return -EIO; 5633 break; 5634 default: 5635 return -ENXIO; 5636 } 5637 5638 if (!rc) 5639 tpacpi_led_state_cache[led] = ledstatus; 5640 5641 return rc; 5642 } 5643 5644 static int led_sysfs_set(struct led_classdev *led_cdev, 5645 enum led_brightness brightness) 5646 { 5647 struct tpacpi_led_classdev *data = container_of(led_cdev, 5648 struct tpacpi_led_classdev, led_classdev); 5649 enum led_status_t new_state; 5650 5651 if (brightness == LED_OFF) 5652 new_state = TPACPI_LED_OFF; 5653 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5654 new_state = TPACPI_LED_ON; 5655 else 5656 new_state = TPACPI_LED_BLINK; 5657 5658 return led_set_status(data->led, new_state); 5659 } 5660 5661 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5662 unsigned long *delay_on, unsigned long *delay_off) 5663 { 5664 struct tpacpi_led_classdev *data = container_of(led_cdev, 5665 struct tpacpi_led_classdev, led_classdev); 5666 5667 /* Can we choose the flash rate? */ 5668 if (*delay_on == 0 && *delay_off == 0) { 5669 /* yes. set them to the hardware blink rate (1 Hz) */ 5670 *delay_on = 500; /* ms */ 5671 *delay_off = 500; /* ms */ 5672 } else if ((*delay_on != 500) || (*delay_off != 500)) 5673 return -EINVAL; 5674 5675 return led_set_status(data->led, TPACPI_LED_BLINK); 5676 } 5677 5678 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5679 { 5680 int rc; 5681 5682 struct tpacpi_led_classdev *data = container_of(led_cdev, 5683 struct tpacpi_led_classdev, led_classdev); 5684 5685 rc = led_get_status(data->led); 5686 5687 if (rc == TPACPI_LED_OFF || rc < 0) 5688 rc = LED_OFF; /* no error handling in led class :( */ 5689 else 5690 rc = LED_FULL; 5691 5692 return rc; 5693 } 5694 5695 static void led_exit(void) 5696 { 5697 unsigned int i; 5698 5699 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5700 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5701 5702 kfree(tpacpi_leds); 5703 } 5704 5705 static int __init tpacpi_init_led(unsigned int led) 5706 { 5707 /* LEDs with no name don't get registered */ 5708 if (!tpacpi_led_names[led]) 5709 return 0; 5710 5711 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5712 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5713 if (led_supported == TPACPI_LED_570) 5714 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5715 5716 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5717 tpacpi_leds[led].led_classdev.flags = LED_RETAIN_AT_SHUTDOWN; 5718 tpacpi_leds[led].led = led; 5719 5720 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5721 } 5722 5723 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5724 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5725 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5726 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5727 5728 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5729 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5730 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5731 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5732 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5733 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5734 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5735 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5736 5737 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5738 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5739 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5740 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5741 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5742 5743 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5744 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5745 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5746 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5747 5748 /* (1) - may have excess leds enabled on MSB */ 5749 5750 /* Defaults (order matters, keep last, don't reorder!) */ 5751 { /* Lenovo */ 5752 .vendor = PCI_VENDOR_ID_LENOVO, 5753 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5754 .quirks = 0x1fffU, 5755 }, 5756 { /* IBM ThinkPads with no EC version string */ 5757 .vendor = PCI_VENDOR_ID_IBM, 5758 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 5759 .quirks = 0x00ffU, 5760 }, 5761 { /* IBM ThinkPads with EC version string */ 5762 .vendor = PCI_VENDOR_ID_IBM, 5763 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5764 .quirks = 0x00bfU, 5765 }, 5766 }; 5767 5768 static enum led_access_mode __init led_init_detect_mode(void) 5769 { 5770 acpi_status status; 5771 5772 if (tpacpi_is_ibm()) { 5773 /* 570 */ 5774 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 5775 if (ACPI_SUCCESS(status)) 5776 return TPACPI_LED_570; 5777 5778 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5779 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 5780 if (ACPI_SUCCESS(status)) 5781 return TPACPI_LED_OLD; 5782 } 5783 5784 /* most others */ 5785 status = acpi_get_handle(ec_handle, "LED", &led_handle); 5786 if (ACPI_SUCCESS(status)) 5787 return TPACPI_LED_NEW; 5788 5789 /* R30, R31, and unknown firmwares */ 5790 led_handle = NULL; 5791 return TPACPI_LED_NONE; 5792 } 5793 5794 static int __init led_init(struct ibm_init_struct *iibm) 5795 { 5796 unsigned int i; 5797 int rc; 5798 unsigned long useful_leds; 5799 5800 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 5801 5802 led_supported = led_init_detect_mode(); 5803 5804 if (led_supported != TPACPI_LED_NONE) { 5805 useful_leds = tpacpi_check_quirks(led_useful_qtable, 5806 ARRAY_SIZE(led_useful_qtable)); 5807 5808 if (!useful_leds) { 5809 led_handle = NULL; 5810 led_supported = TPACPI_LED_NONE; 5811 } 5812 } 5813 5814 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 5815 str_supported(led_supported), led_supported); 5816 5817 if (led_supported == TPACPI_LED_NONE) 5818 return -ENODEV; 5819 5820 tpacpi_leds = kzalloc_objs(*tpacpi_leds, TPACPI_LED_NUMLEDS); 5821 if (!tpacpi_leds) { 5822 pr_err("Out of memory for LED data\n"); 5823 return -ENOMEM; 5824 } 5825 5826 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 5827 tpacpi_leds[i].led = -1; 5828 5829 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 5830 rc = tpacpi_init_led(i); 5831 if (rc < 0) { 5832 led_exit(); 5833 return rc; 5834 } 5835 } 5836 } 5837 5838 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5839 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 5840 #endif 5841 return 0; 5842 } 5843 5844 #define str_led_status(s) ((s) >= TPACPI_LED_BLINK ? "blinking" : str_on_off(s)) 5845 5846 static int led_read(struct seq_file *m) 5847 { 5848 if (!led_supported) { 5849 seq_printf(m, "status:\t\tnot supported\n"); 5850 return 0; 5851 } 5852 seq_printf(m, "status:\t\tsupported\n"); 5853 5854 if (led_supported == TPACPI_LED_570) { 5855 /* 570 */ 5856 int i, status; 5857 for (i = 0; i < 8; i++) { 5858 status = led_get_status(i); 5859 if (status < 0) 5860 return -EIO; 5861 seq_printf(m, "%d:\t\t%s\n", i, str_led_status(status)); 5862 } 5863 } 5864 5865 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 5866 5867 return 0; 5868 } 5869 5870 static int led_write(char *buf) 5871 { 5872 char *cmd; 5873 int led, rc; 5874 enum led_status_t s; 5875 5876 if (!led_supported) 5877 return -ENODEV; 5878 5879 while ((cmd = strsep(&buf, ","))) { 5880 if (sscanf(cmd, "%d", &led) != 1) 5881 return -EINVAL; 5882 5883 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 5884 return -ENODEV; 5885 5886 if (tpacpi_leds[led].led < 0) 5887 return -ENODEV; 5888 5889 if (strstr(cmd, "off")) { 5890 s = TPACPI_LED_OFF; 5891 } else if (strstr(cmd, "on")) { 5892 s = TPACPI_LED_ON; 5893 } else if (strstr(cmd, "blink")) { 5894 s = TPACPI_LED_BLINK; 5895 } else { 5896 return -EINVAL; 5897 } 5898 5899 rc = led_set_status(led, s); 5900 if (rc < 0) 5901 return rc; 5902 } 5903 5904 return 0; 5905 } 5906 5907 static struct ibm_struct led_driver_data = { 5908 .name = "led", 5909 .read = led_read, 5910 .write = led_write, 5911 .exit = led_exit, 5912 }; 5913 5914 /************************************************************************* 5915 * Beep subdriver 5916 */ 5917 5918 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 5919 5920 #define TPACPI_BEEP_Q1 0x0001 5921 5922 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 5923 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 5924 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 5925 }; 5926 5927 static int __init beep_init(struct ibm_init_struct *iibm) 5928 { 5929 unsigned long quirks; 5930 5931 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 5932 5933 TPACPI_ACPIHANDLE_INIT(beep); 5934 5935 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 5936 str_supported(beep_handle != NULL)); 5937 5938 quirks = tpacpi_check_quirks(beep_quirk_table, 5939 ARRAY_SIZE(beep_quirk_table)); 5940 5941 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 5942 5943 return (beep_handle) ? 0 : -ENODEV; 5944 } 5945 5946 static int beep_read(struct seq_file *m) 5947 { 5948 if (!beep_handle) 5949 seq_printf(m, "status:\t\tnot supported\n"); 5950 else { 5951 seq_printf(m, "status:\t\tsupported\n"); 5952 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 5953 } 5954 5955 return 0; 5956 } 5957 5958 static int beep_write(char *buf) 5959 { 5960 char *cmd; 5961 int beep_cmd; 5962 5963 if (!beep_handle) 5964 return -ENODEV; 5965 5966 while ((cmd = strsep(&buf, ","))) { 5967 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 5968 beep_cmd >= 0 && beep_cmd <= 17) { 5969 /* beep_cmd set */ 5970 } else 5971 return -EINVAL; 5972 if (tp_features.beep_needs_two_args) { 5973 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 5974 beep_cmd, 0)) 5975 return -EIO; 5976 } else { 5977 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 5978 beep_cmd)) 5979 return -EIO; 5980 } 5981 } 5982 5983 return 0; 5984 } 5985 5986 static struct ibm_struct beep_driver_data = { 5987 .name = "beep", 5988 .read = beep_read, 5989 .write = beep_write, 5990 }; 5991 5992 /************************************************************************* 5993 * Thermal subdriver 5994 */ 5995 5996 enum thermal_access_mode { 5997 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 5998 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 5999 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6000 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6001 TPACPI_THERMAL_TPEC_12, /* Use ACPI EC regs, 12 sensors */ 6002 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6003 }; 6004 6005 enum { /* TPACPI_THERMAL_TPEC_* */ 6006 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6007 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6008 TP_EC_THERMAL_TMP0_NS = 0xA8, /* ACPI EC Non-Standard regs TMP 0..7 */ 6009 TP_EC_THERMAL_TMP8_NS = 0xB8, /* ACPI EC Non-standard regs TMP 8..11 */ 6010 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */ 6011 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6012 6013 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6014 }; 6015 6016 6017 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6018 struct ibm_thermal_sensors_struct { 6019 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6020 }; 6021 6022 static const struct tpacpi_quirk thermal_quirk_table[] __initconst = { 6023 /* Non-standard address for thermal registers on some ThinkPads */ 6024 TPACPI_Q_LNV3('R', '1', 'F', true), /* L13 Yoga Gen 2 */ 6025 TPACPI_Q_LNV3('N', '2', 'U', true), /* X13 Yoga Gen 2*/ 6026 TPACPI_Q_LNV3('R', '0', 'R', true), /* L380 */ 6027 TPACPI_Q_LNV3('R', '1', '5', true), /* L13 Yoga Gen 1*/ 6028 TPACPI_Q_LNV3('R', '1', '0', true), /* L390 */ 6029 TPACPI_Q_LNV3('N', '2', 'L', true), /* X13 Yoga Gen 1*/ 6030 TPACPI_Q_LNV3('R', '0', 'T', true), /* 11e Gen5 GL*/ 6031 TPACPI_Q_LNV3('R', '1', 'D', true), /* 11e Gen5 GL-R*/ 6032 TPACPI_Q_LNV3('R', '0', 'V', true), /* 11e Gen5 KL-Y*/ 6033 }; 6034 6035 static enum thermal_access_mode thermal_read_mode; 6036 static bool thermal_use_labels; 6037 static bool thermal_with_ns_address; /* Non-standard thermal reg address */ 6038 6039 /* Function to check thermal read mode */ 6040 static enum thermal_access_mode __init thermal_read_mode_check(void) 6041 { 6042 u8 t, ta1, ta2, ver = 0; 6043 int i; 6044 int acpi_tmp7; 6045 6046 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6047 6048 if (thinkpad_id.ec_model) { 6049 /* 6050 * Direct EC access mode: sensors at registers 0x78-0x7F, 6051 * 0xC0-0xC7. Registers return 0x00 for non-implemented, 6052 * thermal sensors return 0x80 when not available. 6053 * 6054 * In some special cases (when Power Supply ID is 0xC2) 6055 * above rule causes thermal control issues. Offset 0xEF 6056 * determines EC version. 0xC0-0xC7 are not thermal registers 6057 * in Ver 3. 6058 */ 6059 if (!acpi_ec_read(TP_EC_FUNCREV, &ver)) 6060 pr_warn("Thinkpad ACPI EC unable to access EC version\n"); 6061 6062 /* Quirks to check non-standard EC */ 6063 thermal_with_ns_address = tpacpi_check_quirks(thermal_quirk_table, 6064 ARRAY_SIZE(thermal_quirk_table)); 6065 6066 /* Support for Thinkpads with non-standard address */ 6067 if (thermal_with_ns_address) { 6068 pr_info("ECFW with non-standard thermal registers found\n"); 6069 return TPACPI_THERMAL_TPEC_12; 6070 } 6071 6072 ta1 = ta2 = 0; 6073 for (i = 0; i < 8; i++) { 6074 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6075 ta1 |= t; 6076 } else { 6077 ta1 = 0; 6078 break; 6079 } 6080 if (ver < 3) { 6081 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6082 ta2 |= t; 6083 } else { 6084 ta1 = 0; 6085 break; 6086 } 6087 } 6088 } 6089 6090 if (ta1 == 0) { 6091 /* This is sheer paranoia, but we handle it anyway */ 6092 if (acpi_tmp7) { 6093 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6094 return TPACPI_THERMAL_ACPI_TMP07; 6095 } 6096 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6097 return TPACPI_THERMAL_NONE; 6098 } 6099 6100 if (ver >= 3) { 6101 thermal_use_labels = true; 6102 return TPACPI_THERMAL_TPEC_8; 6103 } 6104 6105 return (ta2 != 0) ? TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6106 } 6107 6108 if (acpi_tmp7) { 6109 if (tpacpi_is_ibm() && acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6110 /* 600e/x, 770e, 770x */ 6111 return TPACPI_THERMAL_ACPI_UPDT; 6112 } 6113 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6114 return TPACPI_THERMAL_ACPI_TMP07; 6115 } 6116 6117 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6118 return TPACPI_THERMAL_NONE; 6119 } 6120 6121 /* idx is zero-based */ 6122 static int thermal_get_sensor(int idx, s32 *value) 6123 { 6124 int t; 6125 s8 tmp; 6126 char tmpi[5]; 6127 6128 t = TP_EC_THERMAL_TMP0; 6129 6130 switch (thermal_read_mode) { 6131 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6132 case TPACPI_THERMAL_TPEC_16: 6133 if (idx >= 8 && idx <= 15) { 6134 t = TP_EC_THERMAL_TMP8; 6135 idx -= 8; 6136 } 6137 #endif 6138 fallthrough; 6139 case TPACPI_THERMAL_TPEC_8: 6140 if (idx <= 7) { 6141 if (!acpi_ec_read(t + idx, &tmp)) 6142 return -EIO; 6143 *value = tmp * 1000; 6144 return 0; 6145 } 6146 break; 6147 6148 /* The Non-standard EC uses 12 Thermal areas */ 6149 case TPACPI_THERMAL_TPEC_12: 6150 if (idx >= 12) 6151 return -EINVAL; 6152 6153 t = idx < 8 ? TP_EC_THERMAL_TMP0_NS + idx : 6154 TP_EC_THERMAL_TMP8_NS + (idx - 8); 6155 6156 if (!acpi_ec_read(t, &tmp)) 6157 return -EIO; 6158 6159 *value = tmp * MILLIDEGREE_PER_DEGREE; 6160 return 0; 6161 6162 case TPACPI_THERMAL_ACPI_UPDT: 6163 if (idx <= 7) { 6164 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6165 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6166 return -EIO; 6167 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6168 return -EIO; 6169 *value = (t - 2732) * 100; 6170 return 0; 6171 } 6172 break; 6173 6174 case TPACPI_THERMAL_ACPI_TMP07: 6175 if (idx <= 7) { 6176 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6177 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6178 return -EIO; 6179 if (t > 127 || t < -127) 6180 t = TP_EC_THERMAL_TMP_NA; 6181 *value = t * 1000; 6182 return 0; 6183 } 6184 break; 6185 6186 case TPACPI_THERMAL_NONE: 6187 default: 6188 return -ENOSYS; 6189 } 6190 6191 return -EINVAL; 6192 } 6193 6194 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6195 { 6196 int res, i, n; 6197 6198 if (!s) 6199 return -EINVAL; 6200 6201 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6202 n = 16; 6203 else if (thermal_read_mode == TPACPI_THERMAL_TPEC_12) 6204 n = 12; 6205 else 6206 n = 8; 6207 6208 for (i = 0 ; i < n; i++) { 6209 res = thermal_get_sensor(i, &s->temp[i]); 6210 if (res) 6211 return res; 6212 } 6213 6214 return n; 6215 } 6216 6217 static void thermal_dump_all_sensors(void) 6218 { 6219 int n, i; 6220 struct ibm_thermal_sensors_struct t; 6221 6222 n = thermal_get_sensors(&t); 6223 if (n <= 0) 6224 return; 6225 6226 pr_notice("temperatures (Celsius):"); 6227 6228 for (i = 0; i < n; i++) { 6229 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6230 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6231 else 6232 pr_cont(" N/A"); 6233 } 6234 6235 pr_cont("\n"); 6236 } 6237 6238 /* sysfs temp##_input -------------------------------------------------- */ 6239 6240 static ssize_t thermal_temp_input_show(struct device *dev, 6241 struct device_attribute *attr, 6242 char *buf) 6243 { 6244 struct sensor_device_attribute *sensor_attr = 6245 to_sensor_dev_attr(attr); 6246 int idx = sensor_attr->index; 6247 s32 value; 6248 int res; 6249 6250 res = thermal_get_sensor(idx, &value); 6251 if (res) 6252 return res; 6253 if (value == TPACPI_THERMAL_SENSOR_NA) 6254 return -ENXIO; 6255 6256 return sysfs_emit(buf, "%d\n", value); 6257 } 6258 6259 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6260 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6261 thermal_temp_input_show, NULL, _idxB) 6262 6263 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6264 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6265 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6266 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6267 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6268 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6269 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6270 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6271 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6272 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6273 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6274 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6275 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6276 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6277 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6278 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6279 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6280 }; 6281 6282 #define THERMAL_ATTRS(X) \ 6283 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6284 6285 static struct attribute *thermal_temp_input_attr[] = { 6286 THERMAL_ATTRS(0), 6287 THERMAL_ATTRS(1), 6288 THERMAL_ATTRS(2), 6289 THERMAL_ATTRS(3), 6290 THERMAL_ATTRS(4), 6291 THERMAL_ATTRS(5), 6292 THERMAL_ATTRS(6), 6293 THERMAL_ATTRS(7), 6294 THERMAL_ATTRS(8), 6295 THERMAL_ATTRS(9), 6296 THERMAL_ATTRS(10), 6297 THERMAL_ATTRS(11), 6298 THERMAL_ATTRS(12), 6299 THERMAL_ATTRS(13), 6300 THERMAL_ATTRS(14), 6301 THERMAL_ATTRS(15), 6302 NULL 6303 }; 6304 6305 #define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr) 6306 6307 static umode_t thermal_attr_is_visible(struct kobject *kobj, 6308 struct attribute *attr, int n) 6309 { 6310 struct device_attribute *dev_attr = to_dev_attr(attr); 6311 struct sensor_device_attribute *sensor_attr = 6312 to_sensor_dev_attr(dev_attr); 6313 6314 int idx = sensor_attr->index; 6315 6316 switch (thermal_read_mode) { 6317 case TPACPI_THERMAL_NONE: 6318 return 0; 6319 6320 case TPACPI_THERMAL_ACPI_TMP07: 6321 case TPACPI_THERMAL_ACPI_UPDT: 6322 case TPACPI_THERMAL_TPEC_8: 6323 if (idx >= 8) 6324 return 0; 6325 break; 6326 6327 case TPACPI_THERMAL_TPEC_12: 6328 if (idx >= 12) 6329 return 0; 6330 break; 6331 6332 default: 6333 break; 6334 6335 } 6336 6337 return attr->mode; 6338 } 6339 6340 static const struct attribute_group thermal_attr_group = { 6341 .is_visible = thermal_attr_is_visible, 6342 .attrs = thermal_temp_input_attr, 6343 }; 6344 6345 #undef THERMAL_SENSOR_ATTR_TEMP 6346 #undef THERMAL_ATTRS 6347 6348 static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6349 { 6350 return sysfs_emit(buf, "CPU\n"); 6351 } 6352 static DEVICE_ATTR_RO(temp1_label); 6353 6354 static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6355 { 6356 return sysfs_emit(buf, "GPU\n"); 6357 } 6358 static DEVICE_ATTR_RO(temp2_label); 6359 6360 static struct attribute *temp_label_attributes[] = { 6361 &dev_attr_temp1_label.attr, 6362 &dev_attr_temp2_label.attr, 6363 NULL 6364 }; 6365 6366 static umode_t temp_label_attr_is_visible(struct kobject *kobj, 6367 struct attribute *attr, int n) 6368 { 6369 return thermal_use_labels ? attr->mode : 0; 6370 } 6371 6372 static const struct attribute_group temp_label_attr_group = { 6373 .is_visible = temp_label_attr_is_visible, 6374 .attrs = temp_label_attributes, 6375 }; 6376 6377 /* --------------------------------------------------------------------- */ 6378 6379 static int __init thermal_init(struct ibm_init_struct *iibm) 6380 { 6381 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6382 6383 thermal_read_mode = thermal_read_mode_check(); 6384 6385 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6386 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6387 thermal_read_mode); 6388 6389 return thermal_read_mode != TPACPI_THERMAL_NONE ? 0 : -ENODEV; 6390 } 6391 6392 static int thermal_read(struct seq_file *m) 6393 { 6394 int n, i; 6395 struct ibm_thermal_sensors_struct t; 6396 6397 n = thermal_get_sensors(&t); 6398 if (unlikely(n < 0)) 6399 return n; 6400 6401 seq_printf(m, "temperatures:\t"); 6402 6403 if (n > 0) { 6404 for (i = 0; i < (n - 1); i++) 6405 seq_printf(m, "%d ", t.temp[i] / 1000); 6406 seq_printf(m, "%d\n", t.temp[i] / 1000); 6407 } else 6408 seq_printf(m, "not supported\n"); 6409 6410 return 0; 6411 } 6412 6413 static struct ibm_struct thermal_driver_data = { 6414 .name = "thermal", 6415 .read = thermal_read, 6416 }; 6417 6418 /************************************************************************* 6419 * Backlight/brightness subdriver 6420 */ 6421 6422 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6423 6424 /* 6425 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6426 * CMOS NVRAM byte 0x5E, bits 0-3. 6427 * 6428 * EC HBRV (0x31) has the following layout 6429 * Bit 7: unknown function 6430 * Bit 6: unknown function 6431 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6432 * Bit 4: must be set to zero to avoid problems 6433 * Bit 3-0: backlight brightness level 6434 * 6435 * brightness_get_raw returns status data in the HBRV layout 6436 * 6437 * WARNING: The X61 has been verified to use HBRV for something else, so 6438 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6439 * testing on the very early *60 Lenovo models... 6440 */ 6441 6442 enum { 6443 TP_EC_BACKLIGHT = 0x31, 6444 6445 /* TP_EC_BACKLIGHT bitmasks */ 6446 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6447 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6448 TP_EC_BACKLIGHT_MAPSW = 0x20, 6449 }; 6450 6451 enum tpacpi_brightness_access_mode { 6452 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6453 TPACPI_BRGHT_MODE_EC, /* EC control */ 6454 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6455 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6456 TPACPI_BRGHT_MODE_MAX 6457 }; 6458 6459 static struct backlight_device *ibm_backlight_device; 6460 6461 static enum tpacpi_brightness_access_mode brightness_mode = 6462 TPACPI_BRGHT_MODE_MAX; 6463 6464 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6465 6466 static struct mutex brightness_mutex; 6467 6468 /* NVRAM brightness access */ 6469 static unsigned int tpacpi_brightness_nvram_get(void) 6470 { 6471 u8 lnvram; 6472 6473 lockdep_assert_held(&brightness_mutex); 6474 6475 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6476 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6477 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6478 lnvram &= bright_maxlvl; 6479 6480 return lnvram; 6481 } 6482 6483 static void tpacpi_brightness_checkpoint_nvram(void) 6484 { 6485 u8 lec = 0; 6486 u8 b_nvram; 6487 6488 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6489 return; 6490 6491 vdbg_printk(TPACPI_DBG_BRGHT, 6492 "trying to checkpoint backlight level to NVRAM...\n"); 6493 6494 if (mutex_lock_killable(&brightness_mutex) < 0) 6495 return; 6496 6497 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6498 goto unlock; 6499 lec &= TP_EC_BACKLIGHT_LVLMSK; 6500 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6501 6502 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6503 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6504 /* NVRAM needs update */ 6505 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6506 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6507 b_nvram |= lec; 6508 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6509 dbg_printk(TPACPI_DBG_BRGHT, 6510 "updated NVRAM backlight level to %u (0x%02x)\n", 6511 (unsigned int) lec, (unsigned int) b_nvram); 6512 } else 6513 vdbg_printk(TPACPI_DBG_BRGHT, 6514 "NVRAM backlight level already is %u (0x%02x)\n", 6515 (unsigned int) lec, (unsigned int) b_nvram); 6516 6517 unlock: 6518 mutex_unlock(&brightness_mutex); 6519 } 6520 6521 6522 static int tpacpi_brightness_get_raw(int *status) 6523 { 6524 u8 lec = 0; 6525 6526 lockdep_assert_held(&brightness_mutex); 6527 6528 switch (brightness_mode) { 6529 case TPACPI_BRGHT_MODE_UCMS_STEP: 6530 *status = tpacpi_brightness_nvram_get(); 6531 return 0; 6532 case TPACPI_BRGHT_MODE_EC: 6533 case TPACPI_BRGHT_MODE_ECNVRAM: 6534 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6535 return -EIO; 6536 *status = lec; 6537 return 0; 6538 default: 6539 return -ENXIO; 6540 } 6541 } 6542 6543 /* do NOT call with illegal backlight level value */ 6544 static int tpacpi_brightness_set_ec(unsigned int value) 6545 { 6546 u8 lec = 0; 6547 6548 lockdep_assert_held(&brightness_mutex); 6549 6550 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6551 return -EIO; 6552 6553 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6554 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6555 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6556 return -EIO; 6557 6558 return 0; 6559 } 6560 6561 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6562 { 6563 int cmos_cmd, inc; 6564 unsigned int current_value, i; 6565 6566 lockdep_assert_held(&brightness_mutex); 6567 6568 current_value = tpacpi_brightness_nvram_get(); 6569 6570 if (value == current_value) 6571 return 0; 6572 6573 cmos_cmd = (value > current_value) ? 6574 TP_CMOS_BRIGHTNESS_UP : 6575 TP_CMOS_BRIGHTNESS_DOWN; 6576 inc = (value > current_value) ? 1 : -1; 6577 6578 for (i = current_value; i != value; i += inc) 6579 if (issue_thinkpad_cmos_command(cmos_cmd)) 6580 return -EIO; 6581 6582 return 0; 6583 } 6584 6585 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6586 static int brightness_set(unsigned int value) 6587 { 6588 int res; 6589 6590 if (value > bright_maxlvl) 6591 return -EINVAL; 6592 6593 vdbg_printk(TPACPI_DBG_BRGHT, 6594 "set backlight level to %d\n", value); 6595 6596 res = mutex_lock_killable(&brightness_mutex); 6597 if (res < 0) 6598 return res; 6599 6600 switch (brightness_mode) { 6601 case TPACPI_BRGHT_MODE_EC: 6602 case TPACPI_BRGHT_MODE_ECNVRAM: 6603 res = tpacpi_brightness_set_ec(value); 6604 break; 6605 case TPACPI_BRGHT_MODE_UCMS_STEP: 6606 res = tpacpi_brightness_set_ucmsstep(value); 6607 break; 6608 default: 6609 res = -ENXIO; 6610 } 6611 6612 mutex_unlock(&brightness_mutex); 6613 return res; 6614 } 6615 6616 /* sysfs backlight class ----------------------------------------------- */ 6617 6618 static int brightness_update_status(struct backlight_device *bd) 6619 { 6620 int level = backlight_get_brightness(bd); 6621 6622 dbg_printk(TPACPI_DBG_BRGHT, 6623 "backlight: attempt to set level to %d\n", 6624 level); 6625 6626 /* it is the backlight class's job (caller) to handle 6627 * EINTR and other errors properly */ 6628 return brightness_set(level); 6629 } 6630 6631 static int brightness_get(struct backlight_device *bd) 6632 { 6633 int status, res; 6634 6635 res = mutex_lock_killable(&brightness_mutex); 6636 if (res < 0) 6637 return 0; 6638 6639 res = tpacpi_brightness_get_raw(&status); 6640 6641 mutex_unlock(&brightness_mutex); 6642 6643 if (res < 0) 6644 return 0; 6645 6646 return status & TP_EC_BACKLIGHT_LVLMSK; 6647 } 6648 6649 static void tpacpi_brightness_notify_change(void) 6650 { 6651 backlight_force_update(ibm_backlight_device, 6652 BACKLIGHT_UPDATE_HOTKEY); 6653 } 6654 6655 static const struct backlight_ops ibm_backlight_data = { 6656 .get_brightness = brightness_get, 6657 .update_status = brightness_update_status, 6658 }; 6659 6660 /* --------------------------------------------------------------------- */ 6661 6662 static int __init tpacpi_evaluate_bcl(struct acpi_device *adev, void *not_used) 6663 { 6664 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6665 union acpi_object *obj; 6666 acpi_status status; 6667 int rc; 6668 6669 status = acpi_evaluate_object(adev->handle, "_BCL", NULL, &buffer); 6670 if (ACPI_FAILURE(status)) 6671 return 0; 6672 6673 obj = buffer.pointer; 6674 if (!obj || obj->type != ACPI_TYPE_PACKAGE) { 6675 acpi_handle_info(adev->handle, 6676 "Unknown _BCL data, please report this to %s\n", 6677 TPACPI_MAIL); 6678 rc = 0; 6679 } else { 6680 rc = obj->package.count; 6681 } 6682 kfree(obj); 6683 6684 return rc; 6685 } 6686 6687 /* 6688 * Call _BCL method of video device. On some ThinkPads this will 6689 * switch the firmware to the ACPI brightness control mode. 6690 */ 6691 6692 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6693 { 6694 struct acpi_device *device; 6695 6696 device = acpi_fetch_acpi_dev(handle); 6697 if (!device) 6698 return 0; 6699 6700 return acpi_dev_for_each_child(device, tpacpi_evaluate_bcl, NULL); 6701 } 6702 6703 6704 /* 6705 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6706 */ 6707 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6708 { 6709 acpi_handle video_device; 6710 int bcl_levels = 0; 6711 6712 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6713 if (video_device) 6714 bcl_levels = tpacpi_query_bcl_levels(video_device); 6715 6716 tp_features.bright_acpimode = (bcl_levels > 0); 6717 6718 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6719 } 6720 6721 /* 6722 * These are only useful for models that have only one possibility 6723 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6724 * these quirks. 6725 */ 6726 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6727 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6728 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6729 6730 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6731 /* Models with ATI GPUs known to require ECNVRAM mode */ 6732 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6733 6734 /* Models with ATI GPUs that can use ECNVRAM */ 6735 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6736 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6737 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6738 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6739 6740 /* Models with Intel Extreme Graphics 2 */ 6741 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6742 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6743 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6744 6745 /* Models with Intel GMA900 */ 6746 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6747 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6748 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6749 }; 6750 6751 /* 6752 * Returns < 0 for error, otherwise sets tp_features.bright_* 6753 * and bright_maxlvl. 6754 */ 6755 static void __init tpacpi_detect_brightness_capabilities(void) 6756 { 6757 unsigned int b; 6758 6759 vdbg_printk(TPACPI_DBG_INIT, 6760 "detecting firmware brightness interface capabilities\n"); 6761 6762 /* we could run a quirks check here (same table used by 6763 * brightness_init) if needed */ 6764 6765 /* 6766 * We always attempt to detect acpi support, so as to switch 6767 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6768 * going to publish a backlight interface 6769 */ 6770 b = tpacpi_check_std_acpi_brightness_support(); 6771 switch (b) { 6772 case 16: 6773 bright_maxlvl = 15; 6774 break; 6775 case 8: 6776 case 0: 6777 bright_maxlvl = 7; 6778 break; 6779 default: 6780 tp_features.bright_unkfw = 1; 6781 bright_maxlvl = b - 1; 6782 } 6783 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6784 } 6785 6786 static int __init brightness_init(struct ibm_init_struct *iibm) 6787 { 6788 struct backlight_properties props; 6789 int b; 6790 unsigned long quirks; 6791 6792 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6793 6794 mutex_init(&brightness_mutex); 6795 6796 quirks = tpacpi_check_quirks(brightness_quirk_table, 6797 ARRAY_SIZE(brightness_quirk_table)); 6798 6799 /* tpacpi_detect_brightness_capabilities() must have run already */ 6800 6801 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6802 if (tp_features.bright_unkfw) 6803 return -ENODEV; 6804 6805 if (!brightness_enable) { 6806 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6807 "brightness support disabled by module parameter\n"); 6808 return -ENODEV; 6809 } 6810 6811 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6812 if (brightness_enable > 1) { 6813 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6814 return -ENODEV; 6815 } else if (brightness_enable == 1) { 6816 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6817 return -ENODEV; 6818 } 6819 } else if (!tp_features.bright_acpimode) { 6820 pr_notice("ACPI backlight interface not available\n"); 6821 return -ENODEV; 6822 } 6823 6824 pr_notice("ACPI native brightness control enabled\n"); 6825 6826 /* 6827 * Check for module parameter bogosity, note that we 6828 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6829 * able to detect "unspecified" 6830 */ 6831 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6832 return -EINVAL; 6833 6834 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 6835 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 6836 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 6837 if (quirks & TPACPI_BRGHT_Q_EC) 6838 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 6839 else 6840 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 6841 6842 dbg_printk(TPACPI_DBG_BRGHT, 6843 "driver auto-selected brightness_mode=%d\n", 6844 brightness_mode); 6845 } 6846 6847 /* Safety */ 6848 if (!tpacpi_is_ibm() && 6849 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 6850 brightness_mode == TPACPI_BRGHT_MODE_EC)) 6851 return -EINVAL; 6852 6853 if (tpacpi_brightness_get_raw(&b) < 0) 6854 return -ENODEV; 6855 6856 memset(&props, 0, sizeof(struct backlight_properties)); 6857 props.type = BACKLIGHT_PLATFORM; 6858 props.max_brightness = bright_maxlvl; 6859 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 6860 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 6861 NULL, NULL, 6862 &ibm_backlight_data, 6863 &props); 6864 if (IS_ERR(ibm_backlight_device)) { 6865 int rc = PTR_ERR(ibm_backlight_device); 6866 ibm_backlight_device = NULL; 6867 pr_err("Could not register backlight device\n"); 6868 return rc; 6869 } 6870 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6871 "brightness is supported\n"); 6872 6873 if (quirks & TPACPI_BRGHT_Q_ASK) { 6874 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 6875 brightness_mode); 6876 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 6877 TPACPI_MAIL); 6878 } 6879 6880 /* Added by mistake in early 2007. Probably useless, but it could 6881 * be working around some unknown firmware problem where the value 6882 * read at startup doesn't match the real hardware state... so leave 6883 * it in place just in case */ 6884 backlight_update_status(ibm_backlight_device); 6885 6886 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6887 "brightness: registering brightness hotkeys as change notification\n"); 6888 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 6889 | TP_ACPI_HKEY_BRGHTUP_MASK 6890 | TP_ACPI_HKEY_BRGHTDWN_MASK); 6891 return 0; 6892 } 6893 6894 static void brightness_suspend(void) 6895 { 6896 tpacpi_brightness_checkpoint_nvram(); 6897 } 6898 6899 static void brightness_shutdown(void) 6900 { 6901 tpacpi_brightness_checkpoint_nvram(); 6902 } 6903 6904 static void brightness_exit(void) 6905 { 6906 if (ibm_backlight_device) { 6907 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 6908 "calling backlight_device_unregister()\n"); 6909 backlight_device_unregister(ibm_backlight_device); 6910 } 6911 6912 tpacpi_brightness_checkpoint_nvram(); 6913 } 6914 6915 static int brightness_read(struct seq_file *m) 6916 { 6917 int level; 6918 6919 level = brightness_get(NULL); 6920 if (level < 0) { 6921 seq_printf(m, "level:\t\tunreadable\n"); 6922 } else { 6923 seq_printf(m, "level:\t\t%d\n", level); 6924 seq_printf(m, "commands:\tup, down\n"); 6925 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 6926 bright_maxlvl); 6927 } 6928 6929 return 0; 6930 } 6931 6932 static int brightness_write(char *buf) 6933 { 6934 int level; 6935 int rc; 6936 char *cmd; 6937 6938 level = brightness_get(NULL); 6939 if (level < 0) 6940 return level; 6941 6942 while ((cmd = strsep(&buf, ","))) { 6943 if (strstarts(cmd, "up")) { 6944 if (level < bright_maxlvl) 6945 level++; 6946 } else if (strstarts(cmd, "down")) { 6947 if (level > 0) 6948 level--; 6949 } else if (sscanf(cmd, "level %d", &level) == 1 && 6950 level >= 0 && level <= bright_maxlvl) { 6951 /* new level set */ 6952 } else 6953 return -EINVAL; 6954 } 6955 6956 tpacpi_disclose_usertask("procfs brightness", 6957 "set level to %d\n", level); 6958 6959 /* 6960 * Now we know what the final level should be, so we try to set it. 6961 * Doing it this way makes the syscall restartable in case of EINTR 6962 */ 6963 rc = brightness_set(level); 6964 if (!rc && ibm_backlight_device) 6965 backlight_force_update(ibm_backlight_device, 6966 BACKLIGHT_UPDATE_SYSFS); 6967 return (rc == -EINTR) ? -ERESTARTSYS : rc; 6968 } 6969 6970 static struct ibm_struct brightness_driver_data = { 6971 .name = "brightness", 6972 .read = brightness_read, 6973 .write = brightness_write, 6974 .exit = brightness_exit, 6975 .suspend = brightness_suspend, 6976 .shutdown = brightness_shutdown, 6977 }; 6978 6979 /************************************************************************* 6980 * Volume subdriver 6981 */ 6982 6983 /* 6984 * IBM ThinkPads have a simple volume controller with MUTE gating. 6985 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 6986 * 6987 * Since the *61 series (and probably also the later *60 series), Lenovo 6988 * ThinkPads only implement the MUTE gate. 6989 * 6990 * EC register 0x30 6991 * Bit 6: MUTE (1 mutes sound) 6992 * Bit 3-0: Volume 6993 * Other bits should be zero as far as we know. 6994 * 6995 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 6996 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 6997 * such as bit 7 which is used to detect repeated presses of MUTE, 6998 * and we leave them unchanged. 6999 * 7000 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7001 * in response to user input. Unfortunately, this rarely works well. 7002 * The laptop changes the state of its internal MUTE gate and, on some 7003 * models, sends KEY_MUTE, causing any user code that responds to the 7004 * mute button to get confused. The hardware MUTE gate is also 7005 * unnecessary, since user code can handle the mute button without 7006 * kernel or EC help. 7007 * 7008 * To avoid confusing userspace, we simply disable all EC-based mute 7009 * and volume controls when possible. 7010 */ 7011 7012 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7013 7014 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7015 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7016 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7017 7018 #if SNDRV_CARDS <= 32 7019 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7020 #else 7021 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7022 #endif 7023 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7024 static char *alsa_id = "ThinkPadEC"; 7025 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7026 7027 struct tpacpi_alsa_data { 7028 struct snd_card *card; 7029 struct snd_ctl_elem_id *ctl_mute_id; 7030 struct snd_ctl_elem_id *ctl_vol_id; 7031 }; 7032 7033 static struct snd_card *alsa_card; 7034 7035 enum { 7036 TP_EC_AUDIO = 0x30, 7037 7038 /* TP_EC_AUDIO bits */ 7039 TP_EC_AUDIO_MUTESW = 6, 7040 7041 /* TP_EC_AUDIO bitmasks */ 7042 TP_EC_AUDIO_LVL_MSK = 0x0F, 7043 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7044 7045 /* Maximum volume */ 7046 TP_EC_VOLUME_MAX = 14, 7047 }; 7048 7049 enum tpacpi_volume_access_mode { 7050 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7051 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7052 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7053 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7054 TPACPI_VOL_MODE_MAX 7055 }; 7056 7057 enum tpacpi_volume_capabilities { 7058 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7059 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7060 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7061 TPACPI_VOL_CAP_MAX 7062 }; 7063 7064 enum tpacpi_mute_btn_mode { 7065 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7066 /* We don't know what mode 1 is. */ 7067 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7068 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7069 }; 7070 7071 static enum tpacpi_volume_access_mode volume_mode = 7072 TPACPI_VOL_MODE_MAX; 7073 7074 static enum tpacpi_volume_capabilities volume_capabilities; 7075 static bool volume_control_allowed; 7076 static bool software_mute_requested = true; 7077 static bool software_mute_active; 7078 static int software_mute_orig_mode; 7079 7080 /* 7081 * Used to syncronize writers to TP_EC_AUDIO and 7082 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7083 */ 7084 static struct mutex volume_mutex; 7085 7086 static void tpacpi_volume_checkpoint_nvram(void) 7087 { 7088 u8 lec = 0; 7089 u8 b_nvram; 7090 u8 ec_mask; 7091 7092 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7093 return; 7094 if (!volume_control_allowed) 7095 return; 7096 if (software_mute_active) 7097 return; 7098 7099 vdbg_printk(TPACPI_DBG_MIXER, 7100 "trying to checkpoint mixer state to NVRAM...\n"); 7101 7102 if (tp_features.mixer_no_level_control) 7103 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7104 else 7105 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7106 7107 if (mutex_lock_killable(&volume_mutex) < 0) 7108 return; 7109 7110 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7111 goto unlock; 7112 lec &= ec_mask; 7113 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7114 7115 if (lec != (b_nvram & ec_mask)) { 7116 /* NVRAM needs update */ 7117 b_nvram &= ~ec_mask; 7118 b_nvram |= lec; 7119 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7120 dbg_printk(TPACPI_DBG_MIXER, 7121 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7122 (unsigned int) lec, (unsigned int) b_nvram); 7123 } else { 7124 vdbg_printk(TPACPI_DBG_MIXER, 7125 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7126 (unsigned int) lec, (unsigned int) b_nvram); 7127 } 7128 7129 unlock: 7130 mutex_unlock(&volume_mutex); 7131 } 7132 7133 static int volume_get_status_ec(u8 *status) 7134 { 7135 u8 s; 7136 7137 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7138 return -EIO; 7139 7140 *status = s; 7141 7142 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7143 7144 return 0; 7145 } 7146 7147 static int volume_get_status(u8 *status) 7148 { 7149 return volume_get_status_ec(status); 7150 } 7151 7152 static int volume_set_status_ec(const u8 status) 7153 { 7154 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7155 return -EIO; 7156 7157 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7158 7159 /* 7160 * On X200s, and possibly on others, it can take a while for 7161 * reads to become correct. 7162 */ 7163 msleep(1); 7164 7165 return 0; 7166 } 7167 7168 static int volume_set_status(const u8 status) 7169 { 7170 return volume_set_status_ec(status); 7171 } 7172 7173 /* returns < 0 on error, 0 on no change, 1 on change */ 7174 static int __volume_set_mute_ec(const bool mute) 7175 { 7176 int rc; 7177 u8 s, n; 7178 7179 if (mutex_lock_killable(&volume_mutex) < 0) 7180 return -EINTR; 7181 7182 rc = volume_get_status_ec(&s); 7183 if (rc) 7184 goto unlock; 7185 7186 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7187 s & ~TP_EC_AUDIO_MUTESW_MSK; 7188 7189 if (n != s) { 7190 rc = volume_set_status_ec(n); 7191 if (!rc) 7192 rc = 1; 7193 } 7194 7195 unlock: 7196 mutex_unlock(&volume_mutex); 7197 return rc; 7198 } 7199 7200 static int volume_alsa_set_mute(const bool mute) 7201 { 7202 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7203 (mute) ? "" : "un"); 7204 return __volume_set_mute_ec(mute); 7205 } 7206 7207 static int volume_set_mute(const bool mute) 7208 { 7209 int rc; 7210 7211 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7212 (mute) ? "" : "un"); 7213 7214 rc = __volume_set_mute_ec(mute); 7215 return (rc < 0) ? rc : 0; 7216 } 7217 7218 /* returns < 0 on error, 0 on no change, 1 on change */ 7219 static int __volume_set_volume_ec(const u8 vol) 7220 { 7221 int rc; 7222 u8 s, n; 7223 7224 if (vol > TP_EC_VOLUME_MAX) 7225 return -EINVAL; 7226 7227 if (mutex_lock_killable(&volume_mutex) < 0) 7228 return -EINTR; 7229 7230 rc = volume_get_status_ec(&s); 7231 if (rc) 7232 goto unlock; 7233 7234 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7235 7236 if (n != s) { 7237 rc = volume_set_status_ec(n); 7238 if (!rc) 7239 rc = 1; 7240 } 7241 7242 unlock: 7243 mutex_unlock(&volume_mutex); 7244 return rc; 7245 } 7246 7247 static int volume_set_software_mute(bool startup) 7248 { 7249 int result; 7250 7251 if (!tpacpi_is_lenovo()) 7252 return -ENODEV; 7253 7254 if (startup) { 7255 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7256 "HAUM", "qd")) 7257 return -EIO; 7258 7259 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7260 "Initial HAUM setting was %d\n", 7261 software_mute_orig_mode); 7262 } 7263 7264 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7265 (int)TP_EC_MUTE_BTN_NONE)) 7266 return -EIO; 7267 7268 if (result != TP_EC_MUTE_BTN_NONE) 7269 pr_warn("Unexpected SAUM result %d\n", 7270 result); 7271 7272 /* 7273 * In software mute mode, the standard codec controls take 7274 * precendence, so we unmute the ThinkPad HW switch at 7275 * startup. Just on case there are SAUM-capable ThinkPads 7276 * with level controls, set max HW volume as well. 7277 */ 7278 if (tp_features.mixer_no_level_control) 7279 result = volume_set_mute(false); 7280 else 7281 result = volume_set_status(TP_EC_VOLUME_MAX); 7282 7283 if (result != 0) 7284 pr_warn("Failed to unmute the HW mute switch\n"); 7285 7286 return 0; 7287 } 7288 7289 static void volume_exit_software_mute(void) 7290 { 7291 int r; 7292 7293 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7294 || r != software_mute_orig_mode) 7295 pr_warn("Failed to restore mute mode\n"); 7296 } 7297 7298 static int volume_alsa_set_volume(const u8 vol) 7299 { 7300 dbg_printk(TPACPI_DBG_MIXER, 7301 "ALSA: trying to set volume level to %hu\n", vol); 7302 return __volume_set_volume_ec(vol); 7303 } 7304 7305 static void volume_alsa_notify_change(void) 7306 { 7307 struct tpacpi_alsa_data *d; 7308 7309 if (alsa_card && alsa_card->private_data) { 7310 d = alsa_card->private_data; 7311 if (d->ctl_mute_id) 7312 snd_ctl_notify(alsa_card, 7313 SNDRV_CTL_EVENT_MASK_VALUE, 7314 d->ctl_mute_id); 7315 if (d->ctl_vol_id) 7316 snd_ctl_notify(alsa_card, 7317 SNDRV_CTL_EVENT_MASK_VALUE, 7318 d->ctl_vol_id); 7319 } 7320 } 7321 7322 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7323 struct snd_ctl_elem_info *uinfo) 7324 { 7325 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7326 uinfo->count = 1; 7327 uinfo->value.integer.min = 0; 7328 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7329 return 0; 7330 } 7331 7332 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7333 struct snd_ctl_elem_value *ucontrol) 7334 { 7335 u8 s; 7336 int rc; 7337 7338 rc = volume_get_status(&s); 7339 if (rc < 0) 7340 return rc; 7341 7342 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7343 return 0; 7344 } 7345 7346 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7347 struct snd_ctl_elem_value *ucontrol) 7348 { 7349 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7350 ucontrol->value.integer.value[0]); 7351 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7352 } 7353 7354 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7355 7356 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7357 struct snd_ctl_elem_value *ucontrol) 7358 { 7359 u8 s; 7360 int rc; 7361 7362 rc = volume_get_status(&s); 7363 if (rc < 0) 7364 return rc; 7365 7366 ucontrol->value.integer.value[0] = 7367 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7368 return 0; 7369 } 7370 7371 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7372 struct snd_ctl_elem_value *ucontrol) 7373 { 7374 tpacpi_disclose_usertask("ALSA", "%smute\n", 7375 ucontrol->value.integer.value[0] ? 7376 "un" : ""); 7377 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7378 } 7379 7380 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7381 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7382 .name = "Console Playback Volume", 7383 .index = 0, 7384 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7385 .info = volume_alsa_vol_info, 7386 .get = volume_alsa_vol_get, 7387 }; 7388 7389 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7390 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7391 .name = "Console Playback Switch", 7392 .index = 0, 7393 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7394 .info = volume_alsa_mute_info, 7395 .get = volume_alsa_mute_get, 7396 }; 7397 7398 static void volume_suspend(void) 7399 { 7400 tpacpi_volume_checkpoint_nvram(); 7401 } 7402 7403 static void volume_resume(void) 7404 { 7405 if (software_mute_active) { 7406 if (volume_set_software_mute(false) < 0) 7407 pr_warn("Failed to restore software mute\n"); 7408 } else { 7409 volume_alsa_notify_change(); 7410 } 7411 } 7412 7413 static void volume_shutdown(void) 7414 { 7415 tpacpi_volume_checkpoint_nvram(); 7416 } 7417 7418 static void volume_exit(void) 7419 { 7420 if (alsa_card) { 7421 snd_card_free(alsa_card); 7422 alsa_card = NULL; 7423 } 7424 7425 tpacpi_volume_checkpoint_nvram(); 7426 7427 if (software_mute_active) 7428 volume_exit_software_mute(); 7429 } 7430 7431 static int __init volume_create_alsa_mixer(void) 7432 { 7433 struct snd_card *card; 7434 struct tpacpi_alsa_data *data; 7435 struct snd_kcontrol *ctl_vol; 7436 struct snd_kcontrol *ctl_mute; 7437 int rc; 7438 7439 rc = snd_card_new(&tpacpi_pdev->dev, 7440 alsa_index, alsa_id, THIS_MODULE, 7441 sizeof(struct tpacpi_alsa_data), &card); 7442 if (rc < 0 || !card) { 7443 pr_err("Failed to create ALSA card structures: %d\n", rc); 7444 return -ENODEV; 7445 } 7446 7447 BUG_ON(!card->private_data); 7448 data = card->private_data; 7449 data->card = card; 7450 7451 strscpy(card->driver, TPACPI_ALSA_DRVNAME); 7452 strscpy(card->shortname, TPACPI_ALSA_SHRTNAME); 7453 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7454 (thinkpad_id.ec_version_str) ? 7455 thinkpad_id.ec_version_str : "(unknown)"); 7456 snprintf(card->longname, sizeof(card->longname), 7457 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7458 (thinkpad_id.ec_version_str) ? 7459 thinkpad_id.ec_version_str : "unknown"); 7460 7461 if (volume_control_allowed) { 7462 volume_alsa_control_vol.put = volume_alsa_vol_put; 7463 volume_alsa_control_vol.access = 7464 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7465 7466 volume_alsa_control_mute.put = volume_alsa_mute_put; 7467 volume_alsa_control_mute.access = 7468 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7469 } 7470 7471 if (!tp_features.mixer_no_level_control) { 7472 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7473 rc = snd_ctl_add(card, ctl_vol); 7474 if (rc < 0) { 7475 pr_err("Failed to create ALSA volume control: %d\n", 7476 rc); 7477 goto err_exit; 7478 } 7479 data->ctl_vol_id = &ctl_vol->id; 7480 } 7481 7482 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7483 rc = snd_ctl_add(card, ctl_mute); 7484 if (rc < 0) { 7485 pr_err("Failed to create ALSA mute control: %d\n", rc); 7486 goto err_exit; 7487 } 7488 data->ctl_mute_id = &ctl_mute->id; 7489 7490 rc = snd_card_register(card); 7491 if (rc < 0) { 7492 pr_err("Failed to register ALSA card: %d\n", rc); 7493 goto err_exit; 7494 } 7495 7496 alsa_card = card; 7497 return 0; 7498 7499 err_exit: 7500 snd_card_free(card); 7501 return -ENODEV; 7502 } 7503 7504 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7505 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7506 7507 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7508 /* Whitelist volume level on all IBM by default */ 7509 { .vendor = PCI_VENDOR_ID_IBM, 7510 .bios = TPACPI_MATCH_ANY, 7511 .ec = TPACPI_MATCH_ANY, 7512 .quirks = TPACPI_VOL_Q_LEVEL }, 7513 7514 /* Lenovo models with volume control (needs confirmation) */ 7515 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7516 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7517 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7518 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7519 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7520 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7521 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7522 7523 /* Whitelist mute-only on all Lenovo by default */ 7524 { .vendor = PCI_VENDOR_ID_LENOVO, 7525 .bios = TPACPI_MATCH_ANY, 7526 .ec = TPACPI_MATCH_ANY, 7527 .quirks = TPACPI_VOL_Q_MUTEONLY } 7528 }; 7529 7530 static int __init volume_init(struct ibm_init_struct *iibm) 7531 { 7532 unsigned long quirks; 7533 int rc; 7534 7535 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7536 7537 mutex_init(&volume_mutex); 7538 7539 /* 7540 * Check for module parameter bogosity, note that we 7541 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7542 * able to detect "unspecified" 7543 */ 7544 if (volume_mode > TPACPI_VOL_MODE_MAX) 7545 return -EINVAL; 7546 7547 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7548 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7549 TPACPI_MAIL); 7550 return -ENODEV; 7551 } 7552 7553 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7554 return -EINVAL; 7555 7556 /* 7557 * The ALSA mixer is our primary interface. 7558 * When disabled, don't install the subdriver at all 7559 */ 7560 if (!alsa_enable) { 7561 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7562 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7563 return -ENODEV; 7564 } 7565 7566 quirks = tpacpi_check_quirks(volume_quirk_table, 7567 ARRAY_SIZE(volume_quirk_table)); 7568 7569 switch (volume_capabilities) { 7570 case TPACPI_VOL_CAP_AUTO: 7571 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7572 tp_features.mixer_no_level_control = 1; 7573 else if (quirks & TPACPI_VOL_Q_LEVEL) 7574 tp_features.mixer_no_level_control = 0; 7575 else 7576 return -ENODEV; /* no mixer */ 7577 break; 7578 case TPACPI_VOL_CAP_VOLMUTE: 7579 tp_features.mixer_no_level_control = 0; 7580 break; 7581 case TPACPI_VOL_CAP_MUTEONLY: 7582 tp_features.mixer_no_level_control = 1; 7583 break; 7584 default: 7585 return -ENODEV; 7586 } 7587 7588 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7589 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7590 "using user-supplied volume_capabilities=%d\n", 7591 volume_capabilities); 7592 7593 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7594 volume_mode == TPACPI_VOL_MODE_MAX) { 7595 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7596 7597 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7598 "driver auto-selected volume_mode=%d\n", 7599 volume_mode); 7600 } else { 7601 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7602 "using user-supplied volume_mode=%d\n", 7603 volume_mode); 7604 } 7605 7606 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7607 "mute is supported, volume control is %s\n", 7608 str_supported(!tp_features.mixer_no_level_control)); 7609 7610 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7611 software_mute_active = true; 7612 } else { 7613 rc = volume_create_alsa_mixer(); 7614 if (rc) { 7615 pr_err("Could not create the ALSA mixer interface\n"); 7616 return rc; 7617 } 7618 7619 pr_info("Console audio control enabled, mode: %s\n", 7620 (volume_control_allowed) ? 7621 "override (read/write)" : 7622 "monitor (read only)"); 7623 } 7624 7625 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7626 "registering volume hotkeys as change notification\n"); 7627 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7628 | TP_ACPI_HKEY_VOLUP_MASK 7629 | TP_ACPI_HKEY_VOLDWN_MASK 7630 | TP_ACPI_HKEY_MUTE_MASK); 7631 7632 return 0; 7633 } 7634 7635 static int volume_read(struct seq_file *m) 7636 { 7637 u8 status; 7638 7639 if (volume_get_status(&status) < 0) { 7640 seq_printf(m, "level:\t\tunreadable\n"); 7641 } else { 7642 if (tp_features.mixer_no_level_control) 7643 seq_printf(m, "level:\t\tunsupported\n"); 7644 else 7645 seq_printf(m, "level:\t\t%d\n", 7646 status & TP_EC_AUDIO_LVL_MSK); 7647 7648 seq_printf(m, "mute:\t\t%s\n", str_on_off(status & BIT(TP_EC_AUDIO_MUTESW))); 7649 7650 if (volume_control_allowed) { 7651 seq_printf(m, "commands:\tunmute, mute\n"); 7652 if (!tp_features.mixer_no_level_control) { 7653 seq_printf(m, "commands:\tup, down\n"); 7654 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7655 TP_EC_VOLUME_MAX); 7656 } 7657 } 7658 } 7659 7660 return 0; 7661 } 7662 7663 static int volume_write(char *buf) 7664 { 7665 u8 s; 7666 u8 new_level, new_mute; 7667 int l; 7668 char *cmd; 7669 int rc; 7670 7671 /* 7672 * We do allow volume control at driver startup, so that the 7673 * user can set initial state through the volume=... parameter hack. 7674 */ 7675 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7676 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7677 tp_warned.volume_ctrl_forbidden = 1; 7678 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7679 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7680 } 7681 return -EPERM; 7682 } 7683 7684 rc = volume_get_status(&s); 7685 if (rc < 0) 7686 return rc; 7687 7688 new_level = s & TP_EC_AUDIO_LVL_MSK; 7689 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7690 7691 while ((cmd = strsep(&buf, ","))) { 7692 if (!tp_features.mixer_no_level_control) { 7693 if (strstarts(cmd, "up")) { 7694 if (new_mute) 7695 new_mute = 0; 7696 else if (new_level < TP_EC_VOLUME_MAX) 7697 new_level++; 7698 continue; 7699 } else if (strstarts(cmd, "down")) { 7700 if (new_mute) 7701 new_mute = 0; 7702 else if (new_level > 0) 7703 new_level--; 7704 continue; 7705 } else if (sscanf(cmd, "level %u", &l) == 1 && 7706 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7707 new_level = l; 7708 continue; 7709 } 7710 } 7711 if (strstarts(cmd, "mute")) 7712 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7713 else if (strstarts(cmd, "unmute")) 7714 new_mute = 0; 7715 else 7716 return -EINVAL; 7717 } 7718 7719 if (tp_features.mixer_no_level_control) { 7720 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7721 new_mute ? "" : "un"); 7722 rc = volume_set_mute(!!new_mute); 7723 } else { 7724 tpacpi_disclose_usertask("procfs volume", 7725 "%smute and set level to %d\n", 7726 new_mute ? "" : "un", new_level); 7727 rc = volume_set_status(new_mute | new_level); 7728 } 7729 volume_alsa_notify_change(); 7730 7731 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7732 } 7733 7734 static struct ibm_struct volume_driver_data = { 7735 .name = "volume", 7736 .read = volume_read, 7737 .write = volume_write, 7738 .exit = volume_exit, 7739 .suspend = volume_suspend, 7740 .resume = volume_resume, 7741 .shutdown = volume_shutdown, 7742 }; 7743 7744 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7745 7746 #define alsa_card NULL 7747 7748 static inline void volume_alsa_notify_change(void) 7749 { 7750 } 7751 7752 static int __init volume_init(struct ibm_init_struct *iibm) 7753 { 7754 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7755 7756 return -ENODEV; 7757 } 7758 7759 static struct ibm_struct volume_driver_data = { 7760 .name = "volume", 7761 }; 7762 7763 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7764 7765 /************************************************************************* 7766 * Fan subdriver 7767 */ 7768 7769 /* 7770 * FAN ACCESS MODES 7771 * 7772 * TPACPI_FAN_RD_ACPI_GFAN: 7773 * ACPI GFAN method: returns fan level 7774 * 7775 * see TPACPI_FAN_WR_ACPI_SFAN 7776 * EC 0x2f (HFSP) not available if GFAN exists 7777 * 7778 * TPACPI_FAN_WR_ACPI_SFAN: 7779 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7780 * 7781 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7782 * it for writing. 7783 * 7784 * TPACPI_FAN_RD_ACPI_FANG: 7785 * ACPI FANG method: returns fan control register 7786 * 7787 * Takes one parameter which is 0x8100 plus the offset to EC memory 7788 * address 0xf500 and returns the byte at this address. 7789 * 7790 * 0xf500: 7791 * When the value is less than 9 automatic mode is enabled 7792 * 0xf502: 7793 * Contains the current fan speed from 0-100% 7794 * 0xf506: 7795 * Bit 7 has to be set in order to enable manual control by 7796 * writing a value >= 9 to 0xf500 7797 * 7798 * TPACPI_FAN_WR_ACPI_FANW: 7799 * ACPI FANW method: sets fan control registers 7800 * 7801 * Takes 0x8100 plus the offset to EC memory address 0xf500 and the 7802 * value to be written there as parameters. 7803 * 7804 * see TPACPI_FAN_RD_ACPI_FANG 7805 * 7806 * TPACPI_FAN_WR_TPEC: 7807 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7808 * Supported on almost all ThinkPads 7809 * 7810 * Fan speed changes of any sort (including those caused by the 7811 * disengaged mode) are usually done slowly by the firmware as the 7812 * maximum amount of fan duty cycle change per second seems to be 7813 * limited. 7814 * 7815 * Reading is not available if GFAN exists. 7816 * Writing is not available if SFAN exists. 7817 * 7818 * Bits 7819 * 7 automatic mode engaged; 7820 * (default operation mode of the ThinkPad) 7821 * fan level is ignored in this mode. 7822 * 6 full speed mode (takes precedence over bit 7); 7823 * not available on all thinkpads. May disable 7824 * the tachometer while the fan controller ramps up 7825 * the speed (which can take up to a few *minutes*). 7826 * Speeds up fan to 100% duty-cycle, which is far above 7827 * the standard RPM levels. It is not impossible that 7828 * it could cause hardware damage. 7829 * 5-3 unused in some models. Extra bits for fan level 7830 * in others, but still useless as all values above 7831 * 7 map to the same speed as level 7 in these models. 7832 * 2-0 fan level (0..7 usually) 7833 * 0x00 = stop 7834 * 0x07 = max (set when temperatures critical) 7835 * Some ThinkPads may have other levels, see 7836 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7837 * 7838 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7839 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7840 * does so, its initial value is meaningless (0x07). 7841 * 7842 * For firmware bugs, refer to: 7843 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7844 * 7845 * ---- 7846 * 7847 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7848 * Main fan tachometer reading (in RPM) 7849 * 7850 * This register is present on all ThinkPads with a new-style EC, and 7851 * it is known not to be present on the A21m/e, and T22, as there is 7852 * something else in offset 0x84 according to the ACPI DSDT. Other 7853 * ThinkPads from this same time period (and earlier) probably lack the 7854 * tachometer as well. 7855 * 7856 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 7857 * was never fixed by IBM to report the EC firmware version string 7858 * probably support the tachometer (like the early X models), so 7859 * detecting it is quite hard. We need more data to know for sure. 7860 * 7861 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 7862 * might result. 7863 * 7864 * FIRMWARE BUG: may go stale while the EC is switching to full speed 7865 * mode. 7866 * 7867 * For firmware bugs, refer to: 7868 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7869 * 7870 * ---- 7871 * 7872 * ThinkPad EC register 0x31 bit 0 (only on select models) 7873 * 7874 * When bit 0 of EC register 0x31 is zero, the tachometer registers 7875 * show the speed of the main fan. When bit 0 of EC register 0x31 7876 * is one, the tachometer registers show the speed of the auxiliary 7877 * fan. 7878 * 7879 * Fan control seems to affect both fans, regardless of the state 7880 * of this bit. 7881 * 7882 * So far, only the firmware for the X60/X61 non-tablet versions 7883 * seem to support this (firmware TP-7M). 7884 * 7885 * TPACPI_FAN_WR_ACPI_FANS: 7886 * ThinkPad X31, X40, X41. Not available in the X60. 7887 * 7888 * FANS ACPI handle: takes three arguments: low speed, medium speed, 7889 * high speed. ACPI DSDT seems to map these three speeds to levels 7890 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 7891 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 7892 * 7893 * The speeds are stored on handles 7894 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 7895 * 7896 * There are three default speed sets, accessible as handles: 7897 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 7898 * 7899 * ACPI DSDT switches which set is in use depending on various 7900 * factors. 7901 * 7902 * TPACPI_FAN_WR_TPEC is also available and should be used to 7903 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 7904 * but the ACPI tables just mention level 7. 7905 * 7906 * TPACPI_FAN_RD_TPEC_NS: 7907 * This mode is used for a few ThinkPads (L13 Yoga Gen2, X13 Yoga Gen2 etc.) 7908 * that are using non-standard EC locations for reporting fan speeds. 7909 * Currently these platforms only provide fan rpm reporting. 7910 * 7911 */ 7912 7913 #define FAN_RPM_CAL_CONST 491520 /* FAN RPM calculation offset for some non-standard ECFW */ 7914 7915 #define FAN_NS_CTRL_STATUS BIT(2) /* Bit which determines control is enabled or not */ 7916 #define FAN_NS_CTRL BIT(4) /* Bit which determines control is by host or EC */ 7917 #define FAN_CLOCK_TPM (22500*60) /* Ticks per minute for a 22.5 kHz clock */ 7918 7919 enum { /* Fan control constants */ 7920 fan_status_offset = 0x2f, /* EC register 0x2f */ 7921 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 7922 * 0x84 must be read before 0x85 */ 7923 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 7924 bit 0 selects which fan is active */ 7925 7926 fan_status_offset_ns = 0x93, /* Special status/control offset for non-standard EC Fan1 */ 7927 fan2_status_offset_ns = 0x96, /* Special status/control offset for non-standard EC Fan2 */ 7928 fan_rpm_status_ns = 0x95, /* Special offset for Fan1 RPM status for non-standard EC */ 7929 fan2_rpm_status_ns = 0x98, /* Special offset for Fan2 RPM status for non-standard EC */ 7930 7931 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 7932 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 7933 7934 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 7935 }; 7936 7937 enum fan_status_access_mode { 7938 TPACPI_FAN_NONE = 0, /* No fan status or control */ 7939 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 7940 TPACPI_FAN_RD_ACPI_FANG, /* Use ACPI FANG */ 7941 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 7942 TPACPI_FAN_RD_TPEC_NS, /* Use non-standard ACPI EC regs (eg: L13 Yoga gen2 etc.) */ 7943 }; 7944 7945 enum fan_control_access_mode { 7946 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 7947 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 7948 TPACPI_FAN_WR_ACPI_FANW, /* Use ACPI FANW */ 7949 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 7950 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 7951 }; 7952 7953 enum fan_control_commands { 7954 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 7955 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 7956 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 7957 * and also watchdog cmd */ 7958 }; 7959 7960 static bool fan_control_allowed; 7961 7962 static enum fan_status_access_mode fan_status_access_mode; 7963 static enum fan_control_access_mode fan_control_access_mode; 7964 static enum fan_control_commands fan_control_commands; 7965 7966 static u8 fan_control_initial_status; 7967 static u8 fan_control_desired_level; 7968 static u8 fan_control_resume_level; 7969 static int fan_watchdog_maxinterval; 7970 7971 static bool fan_with_ns_addr; 7972 static bool ecfw_with_fan_dec_rpm; 7973 static bool fan_speed_in_tpr; 7974 7975 static struct mutex fan_mutex; 7976 7977 static void fan_watchdog_fire(struct work_struct *ignored); 7978 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 7979 7980 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 7981 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 7982 "\\FSPD", /* 600e/x, 770e, 770x */ 7983 ); /* all others */ 7984 TPACPI_HANDLE(fang, ec, "FANG", /* E531 */ 7985 ); /* all others */ 7986 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 7987 "JFNS", /* 770x-JL */ 7988 ); /* all others */ 7989 TPACPI_HANDLE(fanw, ec, "FANW", /* E531 */ 7990 ); /* all others */ 7991 7992 /* 7993 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 7994 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 7995 * be in auto mode (0x80). 7996 * 7997 * This is corrected by any write to HFSP either by the driver, or 7998 * by the firmware. 7999 * 8000 * We assume 0x07 really means auto mode while this quirk is active, 8001 * as this is far more likely than the ThinkPad being in level 7, 8002 * which is only used by the firmware during thermal emergencies. 8003 * 8004 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8005 * TP-70 (T43, R52), which are known to be buggy. 8006 */ 8007 8008 static void fan_quirk1_setup(void) 8009 { 8010 if (fan_control_initial_status == 0x07) { 8011 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8012 tp_features.fan_ctrl_status_undef = 1; 8013 } 8014 } 8015 8016 static void fan_quirk1_handle(u8 *fan_status) 8017 { 8018 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8019 if (*fan_status != fan_control_initial_status) { 8020 /* something changed the HFSP regisnter since 8021 * driver init time, so it is not undefined 8022 * anymore */ 8023 tp_features.fan_ctrl_status_undef = 0; 8024 } else { 8025 /* Return most likely status. In fact, it 8026 * might be the only possible status */ 8027 *fan_status = TP_EC_FAN_AUTO; 8028 } 8029 } 8030 } 8031 8032 /* Select main fan on X60/X61, NOOP on others */ 8033 static bool fan_select_fan1(void) 8034 { 8035 if (tp_features.second_fan) { 8036 u8 val; 8037 8038 if (ec_read(fan_select_offset, &val) < 0) 8039 return false; 8040 val &= 0xFEU; 8041 if (ec_write(fan_select_offset, val) < 0) 8042 return false; 8043 } 8044 return true; 8045 } 8046 8047 /* Select secondary fan on X60/X61 */ 8048 static bool fan_select_fan2(void) 8049 { 8050 u8 val; 8051 8052 if (!tp_features.second_fan) 8053 return false; 8054 8055 if (ec_read(fan_select_offset, &val) < 0) 8056 return false; 8057 val |= 0x01U; 8058 if (ec_write(fan_select_offset, val) < 0) 8059 return false; 8060 8061 return true; 8062 } 8063 8064 static void fan_update_desired_level(u8 status) 8065 { 8066 lockdep_assert_held(&fan_mutex); 8067 8068 if ((status & 8069 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8070 if (status > 7) 8071 fan_control_desired_level = 7; 8072 else 8073 fan_control_desired_level = status; 8074 } 8075 } 8076 8077 static int fan_get_status(u8 *status) 8078 { 8079 u8 s; 8080 8081 /* TODO: 8082 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8083 8084 switch (fan_status_access_mode) { 8085 case TPACPI_FAN_RD_ACPI_GFAN: { 8086 /* 570, 600e/x, 770e, 770x */ 8087 int res; 8088 8089 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8090 return -EIO; 8091 8092 if (likely(status)) 8093 *status = res & 0x07; 8094 8095 break; 8096 } 8097 case TPACPI_FAN_RD_ACPI_FANG: { 8098 /* E531 */ 8099 int mode, speed; 8100 8101 if (unlikely(!acpi_evalf(fang_handle, &mode, NULL, "dd", 0x8100))) 8102 return -EIO; 8103 if (unlikely(!acpi_evalf(fang_handle, &speed, NULL, "dd", 0x8102))) 8104 return -EIO; 8105 8106 if (likely(status)) { 8107 *status = speed * 7 / 100; 8108 if (mode < 9) 8109 *status |= TP_EC_FAN_AUTO; 8110 } 8111 8112 break; 8113 } 8114 case TPACPI_FAN_RD_TPEC: 8115 /* all except 570, 600e/x, 770e, 770x */ 8116 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8117 return -EIO; 8118 8119 if (likely(status)) { 8120 *status = s; 8121 fan_quirk1_handle(status); 8122 } 8123 8124 break; 8125 case TPACPI_FAN_RD_TPEC_NS: 8126 /* Default mode is AUTO which means controlled by EC */ 8127 if (!acpi_ec_read(fan_status_offset_ns, &s)) 8128 return -EIO; 8129 8130 if (status) 8131 *status = s; 8132 8133 break; 8134 8135 default: 8136 return -ENXIO; 8137 } 8138 8139 return 0; 8140 } 8141 8142 static int fan_get_status_safe(u8 *status) 8143 { 8144 int rc; 8145 u8 s; 8146 8147 if (mutex_lock_killable(&fan_mutex)) 8148 return -ERESTARTSYS; 8149 rc = fan_get_status(&s); 8150 /* NS EC doesn't have register with level settings */ 8151 if (!rc && !fan_with_ns_addr) 8152 fan_update_desired_level(s); 8153 mutex_unlock(&fan_mutex); 8154 8155 if (rc) 8156 return rc; 8157 if (status) 8158 *status = s; 8159 8160 return 0; 8161 } 8162 8163 static int fan_get_speed(unsigned int *speed) 8164 { 8165 u8 hi, lo; 8166 8167 switch (fan_status_access_mode) { 8168 case TPACPI_FAN_RD_TPEC: 8169 /* all except 570, 600e/x, 770e, 770x */ 8170 if (unlikely(!fan_select_fan1())) 8171 return -EIO; 8172 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8173 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8174 return -EIO; 8175 8176 if (likely(speed)) { 8177 *speed = (hi << 8) | lo; 8178 if (fan_speed_in_tpr && *speed != 0) 8179 *speed = FAN_CLOCK_TPM / *speed; 8180 } 8181 break; 8182 case TPACPI_FAN_RD_TPEC_NS: 8183 if (!acpi_ec_read(fan_rpm_status_ns, &lo)) 8184 return -EIO; 8185 8186 if (speed) 8187 *speed = lo ? FAN_RPM_CAL_CONST / lo : 0; 8188 break; 8189 8190 default: 8191 return -ENXIO; 8192 } 8193 8194 return 0; 8195 } 8196 8197 static int fan2_get_speed(unsigned int *speed) 8198 { 8199 u8 hi, lo, status; 8200 bool rc; 8201 8202 switch (fan_status_access_mode) { 8203 case TPACPI_FAN_RD_TPEC: 8204 /* all except 570, 600e/x, 770e, 770x */ 8205 if (unlikely(!fan_select_fan2())) 8206 return -EIO; 8207 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8208 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8209 fan_select_fan1(); /* play it safe */ 8210 if (rc) 8211 return -EIO; 8212 8213 if (likely(speed)) { 8214 *speed = (hi << 8) | lo; 8215 if (fan_speed_in_tpr && *speed != 0) 8216 *speed = FAN_CLOCK_TPM / *speed; 8217 } 8218 break; 8219 8220 case TPACPI_FAN_RD_TPEC_NS: 8221 rc = !acpi_ec_read(fan2_status_offset_ns, &status); 8222 if (rc) 8223 return -EIO; 8224 if (!(status & FAN_NS_CTRL_STATUS)) { 8225 pr_info("secondary fan control not supported\n"); 8226 return -EIO; 8227 } 8228 rc = !acpi_ec_read(fan2_rpm_status_ns, &lo); 8229 if (rc) 8230 return -EIO; 8231 if (speed) 8232 *speed = lo ? FAN_RPM_CAL_CONST / lo : 0; 8233 break; 8234 case TPACPI_FAN_RD_ACPI_FANG: { 8235 /* E531 */ 8236 int speed_tmp; 8237 8238 if (unlikely(!acpi_evalf(fang_handle, &speed_tmp, NULL, "dd", 0x8102))) 8239 return -EIO; 8240 8241 if (likely(speed)) 8242 *speed = speed_tmp * 65535 / 100; 8243 break; 8244 } 8245 8246 default: 8247 return -ENXIO; 8248 } 8249 8250 return 0; 8251 } 8252 8253 static int fan_set_level(int level) 8254 { 8255 if (!fan_control_allowed) 8256 return -EPERM; 8257 8258 switch (fan_control_access_mode) { 8259 case TPACPI_FAN_WR_ACPI_SFAN: 8260 if ((level < 0) || (level > 7)) 8261 return -EINVAL; 8262 8263 if (tp_features.second_fan_ctl) { 8264 if (!fan_select_fan2() || 8265 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8266 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8267 tp_features.second_fan_ctl = 0; 8268 } 8269 fan_select_fan1(); 8270 } 8271 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8272 return -EIO; 8273 break; 8274 8275 case TPACPI_FAN_WR_ACPI_FANS: 8276 case TPACPI_FAN_WR_TPEC: 8277 if (!(level & TP_EC_FAN_AUTO) && 8278 !(level & TP_EC_FAN_FULLSPEED) && 8279 ((level < 0) || (level > 7))) 8280 return -EINVAL; 8281 8282 /* safety net should the EC not support AUTO 8283 * or FULLSPEED mode bits and just ignore them */ 8284 if (level & TP_EC_FAN_FULLSPEED) 8285 level |= 7; /* safety min speed 7 */ 8286 else if (level & TP_EC_FAN_AUTO) 8287 level |= 4; /* safety min speed 4 */ 8288 8289 if (tp_features.second_fan_ctl) { 8290 if (!fan_select_fan2() || 8291 !acpi_ec_write(fan_status_offset, level)) { 8292 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8293 tp_features.second_fan_ctl = 0; 8294 } 8295 fan_select_fan1(); 8296 8297 } 8298 if (!acpi_ec_write(fan_status_offset, level)) 8299 return -EIO; 8300 else 8301 tp_features.fan_ctrl_status_undef = 0; 8302 break; 8303 8304 case TPACPI_FAN_WR_ACPI_FANW: 8305 if (!(level & TP_EC_FAN_AUTO) && (level < 0 || level > 7)) 8306 return -EINVAL; 8307 if (level & TP_EC_FAN_FULLSPEED) 8308 return -EINVAL; 8309 8310 if (level & TP_EC_FAN_AUTO) { 8311 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) { 8312 return -EIO; 8313 } 8314 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) { 8315 return -EIO; 8316 } 8317 } else { 8318 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { 8319 return -EIO; 8320 } 8321 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { 8322 return -EIO; 8323 } 8324 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, level * 100 / 7)) { 8325 return -EIO; 8326 } 8327 } 8328 break; 8329 8330 default: 8331 return -ENXIO; 8332 } 8333 8334 vdbg_printk(TPACPI_DBG_FAN, 8335 "fan control: set fan control register to 0x%02x\n", level); 8336 return 0; 8337 } 8338 8339 static int fan_set_level_safe(int level) 8340 { 8341 int rc; 8342 8343 if (!fan_control_allowed) 8344 return -EPERM; 8345 8346 if (mutex_lock_killable(&fan_mutex)) 8347 return -ERESTARTSYS; 8348 8349 if (level == TPACPI_FAN_LAST_LEVEL) 8350 level = fan_control_desired_level; 8351 8352 rc = fan_set_level(level); 8353 if (!rc) 8354 fan_update_desired_level(level); 8355 8356 mutex_unlock(&fan_mutex); 8357 return rc; 8358 } 8359 8360 static int fan_set_enable(void) 8361 { 8362 u8 s = 0; 8363 int rc; 8364 8365 if (!fan_control_allowed) 8366 return -EPERM; 8367 8368 if (mutex_lock_killable(&fan_mutex)) 8369 return -ERESTARTSYS; 8370 8371 switch (fan_control_access_mode) { 8372 case TPACPI_FAN_WR_ACPI_FANS: 8373 case TPACPI_FAN_WR_TPEC: 8374 rc = fan_get_status(&s); 8375 if (rc) 8376 break; 8377 8378 /* Don't go out of emergency fan mode */ 8379 if (s != 7) { 8380 s &= 0x07; 8381 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8382 } 8383 8384 if (!acpi_ec_write(fan_status_offset, s)) 8385 rc = -EIO; 8386 else { 8387 tp_features.fan_ctrl_status_undef = 0; 8388 rc = 0; 8389 } 8390 break; 8391 8392 case TPACPI_FAN_WR_ACPI_SFAN: 8393 rc = fan_get_status(&s); 8394 if (rc) 8395 break; 8396 8397 s &= 0x07; 8398 8399 /* Set fan to at least level 4 */ 8400 s |= 4; 8401 8402 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8403 rc = -EIO; 8404 else 8405 rc = 0; 8406 break; 8407 8408 case TPACPI_FAN_WR_ACPI_FANW: 8409 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) { 8410 rc = -EIO; 8411 break; 8412 } 8413 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) { 8414 rc = -EIO; 8415 break; 8416 } 8417 8418 rc = 0; 8419 break; 8420 8421 default: 8422 rc = -ENXIO; 8423 } 8424 8425 mutex_unlock(&fan_mutex); 8426 8427 if (!rc) 8428 vdbg_printk(TPACPI_DBG_FAN, 8429 "fan control: set fan control register to 0x%02x\n", 8430 s); 8431 return rc; 8432 } 8433 8434 static int fan_set_disable(void) 8435 { 8436 int rc; 8437 8438 if (!fan_control_allowed) 8439 return -EPERM; 8440 8441 if (mutex_lock_killable(&fan_mutex)) 8442 return -ERESTARTSYS; 8443 8444 rc = 0; 8445 switch (fan_control_access_mode) { 8446 case TPACPI_FAN_WR_ACPI_FANS: 8447 case TPACPI_FAN_WR_TPEC: 8448 if (!acpi_ec_write(fan_status_offset, 0x00)) 8449 rc = -EIO; 8450 else { 8451 fan_control_desired_level = 0; 8452 tp_features.fan_ctrl_status_undef = 0; 8453 } 8454 break; 8455 8456 case TPACPI_FAN_WR_ACPI_SFAN: 8457 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8458 rc = -EIO; 8459 else 8460 fan_control_desired_level = 0; 8461 break; 8462 8463 case TPACPI_FAN_WR_ACPI_FANW: 8464 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { 8465 rc = -EIO; 8466 break; 8467 } 8468 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { 8469 rc = -EIO; 8470 break; 8471 } 8472 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, 0x00)) { 8473 rc = -EIO; 8474 break; 8475 } 8476 rc = 0; 8477 break; 8478 8479 default: 8480 rc = -ENXIO; 8481 } 8482 8483 if (!rc) 8484 vdbg_printk(TPACPI_DBG_FAN, 8485 "fan control: set fan control register to 0\n"); 8486 8487 mutex_unlock(&fan_mutex); 8488 return rc; 8489 } 8490 8491 static int fan_set_speed(int speed) 8492 { 8493 int rc; 8494 8495 if (!fan_control_allowed) 8496 return -EPERM; 8497 8498 if (mutex_lock_killable(&fan_mutex)) 8499 return -ERESTARTSYS; 8500 8501 rc = 0; 8502 switch (fan_control_access_mode) { 8503 case TPACPI_FAN_WR_ACPI_FANS: 8504 if (speed >= 0 && speed <= 65535) { 8505 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8506 speed, speed, speed)) 8507 rc = -EIO; 8508 } else 8509 rc = -EINVAL; 8510 break; 8511 8512 case TPACPI_FAN_WR_ACPI_FANW: 8513 if (speed >= 0 && speed <= 65535) { 8514 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { 8515 rc = -EIO; 8516 break; 8517 } 8518 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { 8519 rc = -EIO; 8520 break; 8521 } 8522 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 8523 0x8102, speed * 100 / 65535)) 8524 rc = -EIO; 8525 } else 8526 rc = -EINVAL; 8527 break; 8528 8529 default: 8530 rc = -ENXIO; 8531 } 8532 8533 mutex_unlock(&fan_mutex); 8534 return rc; 8535 } 8536 8537 static void fan_watchdog_reset(void) 8538 { 8539 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8540 return; 8541 8542 if (fan_watchdog_maxinterval > 0 && 8543 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8544 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8545 secs_to_jiffies(fan_watchdog_maxinterval)); 8546 else 8547 cancel_delayed_work(&fan_watchdog_task); 8548 } 8549 8550 static void fan_watchdog_fire(struct work_struct *ignored) 8551 { 8552 int rc; 8553 8554 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8555 return; 8556 8557 pr_notice("fan watchdog: enabling fan\n"); 8558 rc = fan_set_enable(); 8559 if (rc < 0) { 8560 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8561 rc); 8562 /* reschedule for later */ 8563 fan_watchdog_reset(); 8564 } 8565 } 8566 8567 /* 8568 * SYSFS fan layout: hwmon compatible (device) 8569 * 8570 * pwm*_enable: 8571 * 0: "disengaged" mode 8572 * 1: manual mode 8573 * 2: native EC "auto" mode (recommended, hardware default) 8574 * 8575 * pwm*: set speed in manual mode, ignored otherwise. 8576 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8577 * interpolation. 8578 * 8579 * fan*_input: tachometer reading, RPM 8580 * 8581 * 8582 * SYSFS fan layout: extensions 8583 * 8584 * fan_watchdog (driver): 8585 * fan watchdog interval in seconds, 0 disables (default), max 120 8586 */ 8587 8588 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8589 static ssize_t fan_pwm1_enable_show(struct device *dev, 8590 struct device_attribute *attr, 8591 char *buf) 8592 { 8593 int res, mode; 8594 u8 status; 8595 8596 res = fan_get_status_safe(&status); 8597 if (res) 8598 return res; 8599 8600 if (status & TP_EC_FAN_FULLSPEED) { 8601 mode = 0; 8602 } else if (status & TP_EC_FAN_AUTO) { 8603 mode = 2; 8604 } else 8605 mode = 1; 8606 8607 return sysfs_emit(buf, "%d\n", mode); 8608 } 8609 8610 static ssize_t fan_pwm1_enable_store(struct device *dev, 8611 struct device_attribute *attr, 8612 const char *buf, size_t count) 8613 { 8614 unsigned long t; 8615 int res, level; 8616 8617 if (parse_strtoul(buf, 2, &t)) 8618 return -EINVAL; 8619 8620 tpacpi_disclose_usertask("hwmon pwm1_enable", 8621 "set fan mode to %lu\n", t); 8622 8623 switch (t) { 8624 case 0: 8625 level = TP_EC_FAN_FULLSPEED; 8626 break; 8627 case 1: 8628 level = TPACPI_FAN_LAST_LEVEL; 8629 break; 8630 case 2: 8631 level = TP_EC_FAN_AUTO; 8632 break; 8633 case 3: 8634 /* reserved for software-controlled auto mode */ 8635 return -ENOSYS; 8636 default: 8637 return -EINVAL; 8638 } 8639 8640 res = fan_set_level_safe(level); 8641 if (res == -ENXIO) 8642 return -EINVAL; 8643 else if (res < 0) 8644 return res; 8645 8646 fan_watchdog_reset(); 8647 8648 return count; 8649 } 8650 8651 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8652 fan_pwm1_enable_show, fan_pwm1_enable_store); 8653 8654 /* sysfs fan pwm1 ------------------------------------------------------ */ 8655 static ssize_t fan_pwm1_show(struct device *dev, 8656 struct device_attribute *attr, 8657 char *buf) 8658 { 8659 int res; 8660 u8 status; 8661 8662 res = fan_get_status_safe(&status); 8663 if (res) 8664 return res; 8665 8666 if ((status & 8667 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8668 status = fan_control_desired_level; 8669 8670 if (status > 7) 8671 status = 7; 8672 8673 return sysfs_emit(buf, "%u\n", (status * 255) / 7); 8674 } 8675 8676 static ssize_t fan_pwm1_store(struct device *dev, 8677 struct device_attribute *attr, 8678 const char *buf, size_t count) 8679 { 8680 unsigned long s; 8681 int rc; 8682 u8 status, newlevel; 8683 8684 if (parse_strtoul(buf, 255, &s)) 8685 return -EINVAL; 8686 8687 tpacpi_disclose_usertask("hwmon pwm1", 8688 "set fan speed to %lu\n", s); 8689 8690 /* scale down from 0-255 to 0-7 */ 8691 newlevel = (s >> 5) & 0x07; 8692 8693 if (mutex_lock_killable(&fan_mutex)) 8694 return -ERESTARTSYS; 8695 8696 rc = fan_get_status(&status); 8697 if (!rc && (status & 8698 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8699 rc = fan_set_level(newlevel); 8700 if (rc == -ENXIO) 8701 rc = -EINVAL; 8702 else if (!rc) { 8703 fan_update_desired_level(newlevel); 8704 fan_watchdog_reset(); 8705 } 8706 } 8707 8708 mutex_unlock(&fan_mutex); 8709 return (rc) ? rc : count; 8710 } 8711 8712 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8713 8714 /* sysfs fan fan1_input ------------------------------------------------ */ 8715 static ssize_t fan_fan1_input_show(struct device *dev, 8716 struct device_attribute *attr, 8717 char *buf) 8718 { 8719 int res; 8720 unsigned int speed; 8721 8722 res = fan_get_speed(&speed); 8723 if (res < 0) 8724 return res; 8725 8726 /* Check for fan speeds displayed in hexadecimal */ 8727 if (!ecfw_with_fan_dec_rpm) 8728 return sysfs_emit(buf, "%u\n", speed); 8729 else 8730 return sysfs_emit(buf, "%x\n", speed); 8731 } 8732 8733 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8734 8735 /* sysfs fan fan2_input ------------------------------------------------ */ 8736 static ssize_t fan_fan2_input_show(struct device *dev, 8737 struct device_attribute *attr, 8738 char *buf) 8739 { 8740 int res; 8741 unsigned int speed; 8742 8743 res = fan2_get_speed(&speed); 8744 if (res < 0) 8745 return res; 8746 8747 /* Check for fan speeds displayed in hexadecimal */ 8748 if (!ecfw_with_fan_dec_rpm) 8749 return sysfs_emit(buf, "%u\n", speed); 8750 else 8751 return sysfs_emit(buf, "%x\n", speed); 8752 } 8753 8754 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8755 8756 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8757 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8758 { 8759 return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval); 8760 } 8761 8762 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8763 size_t count) 8764 { 8765 unsigned long t; 8766 8767 if (parse_strtoul(buf, 120, &t)) 8768 return -EINVAL; 8769 8770 if (!fan_control_allowed) 8771 return -EPERM; 8772 8773 fan_watchdog_maxinterval = t; 8774 fan_watchdog_reset(); 8775 8776 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8777 8778 return count; 8779 } 8780 static DRIVER_ATTR_RW(fan_watchdog); 8781 8782 /* --------------------------------------------------------------------- */ 8783 8784 static struct attribute *fan_attributes[] = { 8785 &dev_attr_pwm1_enable.attr, 8786 &dev_attr_pwm1.attr, 8787 &dev_attr_fan1_input.attr, 8788 &dev_attr_fan2_input.attr, 8789 NULL 8790 }; 8791 8792 static umode_t fan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 8793 int n) 8794 { 8795 if (fan_status_access_mode == TPACPI_FAN_NONE && 8796 fan_control_access_mode == TPACPI_FAN_WR_NONE) 8797 return 0; 8798 8799 if (attr == &dev_attr_fan2_input.attr) { 8800 if (!tp_features.second_fan) 8801 return 0; 8802 } 8803 8804 return attr->mode; 8805 } 8806 8807 static const struct attribute_group fan_attr_group = { 8808 .is_visible = fan_attr_is_visible, 8809 .attrs = fan_attributes, 8810 }; 8811 8812 static struct attribute *fan_driver_attributes[] = { 8813 &driver_attr_fan_watchdog.attr, 8814 NULL 8815 }; 8816 8817 static const struct attribute_group fan_driver_attr_group = { 8818 .is_visible = fan_attr_is_visible, 8819 .attrs = fan_driver_attributes, 8820 }; 8821 8822 #define TPACPI_FAN_Q1 0x0001 /* Uninitialized HFSP */ 8823 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8824 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8825 #define TPACPI_FAN_NOFAN 0x0008 /* no fan available */ 8826 #define TPACPI_FAN_NS 0x0010 /* For EC with non-Standard register addresses */ 8827 #define TPACPI_FAN_DECRPM 0x0020 /* For ECFW's with RPM in register as decimal */ 8828 #define TPACPI_FAN_TPR 0x0040 /* Fan speed is in Ticks Per Revolution */ 8829 #define TPACPI_FAN_NOACPI 0x0080 /* Don't use ACPI methods even if detected */ 8830 8831 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8832 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8833 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8834 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8835 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8836 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8837 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8838 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8839 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8840 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8841 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8842 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8843 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ 8844 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8845 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8846 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8847 TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL), /* T15g (2nd gen) */ 8848 TPACPI_Q_LNV3('R', '1', 'F', TPACPI_FAN_NS), /* L13 Yoga Gen 2 */ 8849 TPACPI_Q_LNV3('N', '2', 'U', TPACPI_FAN_NS), /* X13 Yoga Gen 2*/ 8850 TPACPI_Q_LNV3('R', '0', 'R', TPACPI_FAN_NS), /* L380 */ 8851 TPACPI_Q_LNV3('R', '1', '5', TPACPI_FAN_NS), /* L13 Yoga Gen 1 */ 8852 TPACPI_Q_LNV3('R', '1', '0', TPACPI_FAN_NS), /* L390 */ 8853 TPACPI_Q_LNV3('N', '2', 'L', TPACPI_FAN_NS), /* X13 Yoga Gen 1 */ 8854 TPACPI_Q_LNV3('R', '0', 'T', TPACPI_FAN_NS), /* 11e Gen5 GL */ 8855 TPACPI_Q_LNV3('R', '1', 'D', TPACPI_FAN_NS), /* 11e Gen5 GL-R */ 8856 TPACPI_Q_LNV3('R', '0', 'V', TPACPI_FAN_NS), /* 11e Gen5 KL-Y */ 8857 TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */ 8858 TPACPI_Q_LNV3('R', '0', 'Q', TPACPI_FAN_DECRPM),/* L480 */ 8859 TPACPI_Q_LNV('8', 'F', TPACPI_FAN_TPR), /* ThinkPad x120e */ 8860 TPACPI_Q_LNV3('R', '0', '0', TPACPI_FAN_NOACPI),/* E560 */ 8861 TPACPI_Q_LNV3('R', '1', '2', TPACPI_FAN_NOACPI),/* T495 */ 8862 TPACPI_Q_LNV3('R', '1', '3', TPACPI_FAN_NOACPI),/* T495s */ 8863 }; 8864 8865 static int __init fan_init(struct ibm_init_struct *iibm) 8866 { 8867 unsigned long quirks; 8868 8869 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8870 "initializing fan subdriver\n"); 8871 8872 mutex_init(&fan_mutex); 8873 fan_status_access_mode = TPACPI_FAN_NONE; 8874 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8875 fan_control_commands = 0; 8876 fan_watchdog_maxinterval = 0; 8877 tp_features.fan_ctrl_status_undef = 0; 8878 tp_features.second_fan = 0; 8879 tp_features.second_fan_ctl = 0; 8880 fan_control_desired_level = 7; 8881 8882 if (tpacpi_is_ibm()) { 8883 TPACPI_ACPIHANDLE_INIT(fans); 8884 TPACPI_ACPIHANDLE_INIT(gfan); 8885 TPACPI_ACPIHANDLE_INIT(sfan); 8886 } 8887 if (tpacpi_is_lenovo()) { 8888 TPACPI_ACPIHANDLE_INIT(fang); 8889 TPACPI_ACPIHANDLE_INIT(fanw); 8890 } 8891 8892 quirks = tpacpi_check_quirks(fan_quirk_table, 8893 ARRAY_SIZE(fan_quirk_table)); 8894 8895 if (quirks & TPACPI_FAN_NOFAN) { 8896 pr_info("No integrated ThinkPad fan available\n"); 8897 return -ENODEV; 8898 } 8899 8900 if (quirks & TPACPI_FAN_NS) { 8901 pr_info("ECFW with non-standard fan reg control found\n"); 8902 fan_with_ns_addr = 1; 8903 /* Fan ctrl support from host is undefined for now */ 8904 tp_features.fan_ctrl_status_undef = 1; 8905 } 8906 8907 /* Check for the EC/BIOS with RPM reported in decimal*/ 8908 if (quirks & TPACPI_FAN_DECRPM) { 8909 pr_info("ECFW with fan RPM as decimal in EC register\n"); 8910 ecfw_with_fan_dec_rpm = 1; 8911 tp_features.fan_ctrl_status_undef = 1; 8912 } 8913 8914 if (quirks & TPACPI_FAN_NOACPI) { 8915 /* E560, T495, T495s */ 8916 pr_info("Ignoring buggy ACPI fan access method\n"); 8917 fang_handle = NULL; 8918 fanw_handle = NULL; 8919 } 8920 8921 if (gfan_handle) { 8922 /* 570, 600e/x, 770e, 770x */ 8923 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8924 } else if (fang_handle) { 8925 /* E531 */ 8926 fan_status_access_mode = TPACPI_FAN_RD_ACPI_FANG; 8927 } else { 8928 /* all other ThinkPads: note that even old-style 8929 * ThinkPad ECs supports the fan control register */ 8930 if (fan_with_ns_addr || 8931 likely(acpi_ec_read(fan_status_offset, &fan_control_initial_status))) { 8932 int res; 8933 unsigned int speed; 8934 8935 fan_status_access_mode = fan_with_ns_addr ? 8936 TPACPI_FAN_RD_TPEC_NS : TPACPI_FAN_RD_TPEC; 8937 8938 if (quirks & TPACPI_FAN_Q1) 8939 fan_quirk1_setup(); 8940 if (quirks & TPACPI_FAN_TPR) 8941 fan_speed_in_tpr = true; 8942 /* Try and probe the 2nd fan */ 8943 tp_features.second_fan = 1; /* needed for get_speed to work */ 8944 res = fan2_get_speed(&speed); 8945 if (res >= 0 && speed != FAN_NOT_PRESENT) { 8946 /* It responded - so let's assume it's there */ 8947 tp_features.second_fan = 1; 8948 /* fan control not currently available for ns ECFW */ 8949 tp_features.second_fan_ctl = !fan_with_ns_addr; 8950 pr_info("secondary fan control detected & enabled\n"); 8951 } else { 8952 /* Fan not auto-detected */ 8953 tp_features.second_fan = 0; 8954 if (quirks & TPACPI_FAN_2FAN) { 8955 tp_features.second_fan = 1; 8956 pr_info("secondary fan support enabled\n"); 8957 } 8958 if (quirks & TPACPI_FAN_2CTL) { 8959 tp_features.second_fan = 1; 8960 tp_features.second_fan_ctl = 1; 8961 pr_info("secondary fan control enabled\n"); 8962 } 8963 } 8964 } else { 8965 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8966 return -ENODEV; 8967 } 8968 } 8969 8970 if (sfan_handle) { 8971 /* 570, 770x-JL */ 8972 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8973 fan_control_commands |= 8974 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8975 } else if (fanw_handle) { 8976 /* E531 */ 8977 fan_control_access_mode = TPACPI_FAN_WR_ACPI_FANW; 8978 fan_control_commands |= 8979 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_SPEED | TPACPI_FAN_CMD_ENABLE; 8980 } else { 8981 if (!gfan_handle) { 8982 /* gfan without sfan means no fan control */ 8983 /* all other models implement TP EC 0x2f control */ 8984 8985 if (fans_handle) { 8986 /* X31, X40, X41 */ 8987 fan_control_access_mode = 8988 TPACPI_FAN_WR_ACPI_FANS; 8989 fan_control_commands |= 8990 TPACPI_FAN_CMD_SPEED | 8991 TPACPI_FAN_CMD_LEVEL | 8992 TPACPI_FAN_CMD_ENABLE; 8993 } else { 8994 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8995 fan_control_commands |= 8996 TPACPI_FAN_CMD_LEVEL | 8997 TPACPI_FAN_CMD_ENABLE; 8998 } 8999 } 9000 } 9001 9002 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 9003 "fan is %s, modes %d, %d\n", 9004 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 9005 fan_control_access_mode != TPACPI_FAN_WR_NONE), 9006 fan_status_access_mode, fan_control_access_mode); 9007 9008 /* fan control master switch */ 9009 if (!fan_control_allowed) { 9010 fan_control_access_mode = TPACPI_FAN_WR_NONE; 9011 fan_control_commands = 0; 9012 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 9013 "fan control features disabled by parameter\n"); 9014 } 9015 9016 /* update fan_control_desired_level */ 9017 if (fan_status_access_mode != TPACPI_FAN_NONE) 9018 fan_get_status_safe(NULL); 9019 9020 if (fan_status_access_mode == TPACPI_FAN_NONE && 9021 fan_control_access_mode == TPACPI_FAN_WR_NONE) 9022 return -ENODEV; 9023 9024 return 0; 9025 } 9026 9027 static void fan_exit(void) 9028 { 9029 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 9030 "cancelling any pending fan watchdog tasks\n"); 9031 9032 cancel_delayed_work(&fan_watchdog_task); 9033 flush_workqueue(tpacpi_wq); 9034 } 9035 9036 static void fan_suspend(void) 9037 { 9038 int rc; 9039 9040 if (!fan_control_allowed) 9041 return; 9042 9043 /* Store fan status in cache */ 9044 fan_control_resume_level = 0; 9045 rc = fan_get_status_safe(&fan_control_resume_level); 9046 if (rc) 9047 pr_notice("failed to read fan level for later restore during resume: %d\n", 9048 rc); 9049 9050 /* if it is undefined, don't attempt to restore it. 9051 * KEEP THIS LAST */ 9052 if (tp_features.fan_ctrl_status_undef) 9053 fan_control_resume_level = 0; 9054 } 9055 9056 static void fan_resume(void) 9057 { 9058 u8 current_level = 7; 9059 bool do_set = false; 9060 int rc; 9061 9062 /* DSDT *always* updates status on resume */ 9063 tp_features.fan_ctrl_status_undef = 0; 9064 9065 if (!fan_control_allowed || 9066 !fan_control_resume_level || 9067 fan_get_status_safe(¤t_level)) 9068 return; 9069 9070 switch (fan_control_access_mode) { 9071 case TPACPI_FAN_WR_ACPI_SFAN: 9072 /* never decrease fan level */ 9073 do_set = (fan_control_resume_level > current_level); 9074 break; 9075 case TPACPI_FAN_WR_ACPI_FANS: 9076 case TPACPI_FAN_WR_TPEC: 9077 /* never decrease fan level, scale is: 9078 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 9079 * 9080 * We expect the firmware to set either 7 or AUTO, but we 9081 * handle FULLSPEED out of paranoia. 9082 * 9083 * So, we can safely only restore FULLSPEED or 7, anything 9084 * else could slow the fan. Restoring AUTO is useless, at 9085 * best that's exactly what the DSDT already set (it is the 9086 * slower it uses). 9087 * 9088 * Always keep in mind that the DSDT *will* have set the 9089 * fans to what the vendor supposes is the best level. We 9090 * muck with it only to speed the fan up. 9091 */ 9092 if (fan_control_resume_level != 7 && 9093 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 9094 return; 9095 else 9096 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 9097 (current_level != fan_control_resume_level); 9098 break; 9099 default: 9100 return; 9101 } 9102 if (do_set) { 9103 pr_notice("restoring fan level to 0x%02x\n", 9104 fan_control_resume_level); 9105 rc = fan_set_level_safe(fan_control_resume_level); 9106 if (rc < 0) 9107 pr_notice("failed to restore fan level: %d\n", rc); 9108 } 9109 } 9110 9111 static int fan_read(struct seq_file *m) 9112 { 9113 int rc; 9114 u8 status; 9115 unsigned int speed = 0; 9116 9117 switch (fan_status_access_mode) { 9118 case TPACPI_FAN_RD_ACPI_GFAN: 9119 /* 570, 600e/x, 770e, 770x */ 9120 rc = fan_get_status_safe(&status); 9121 if (rc) 9122 return rc; 9123 9124 seq_printf(m, "status:\t\t%s\n" 9125 "level:\t\t%d\n", 9126 str_enabled_disabled(status), status); 9127 break; 9128 9129 case TPACPI_FAN_RD_TPEC_NS: 9130 case TPACPI_FAN_RD_TPEC: 9131 case TPACPI_FAN_RD_ACPI_FANG: 9132 /* all except 570, 600e/x, 770e, 770x */ 9133 rc = fan_get_status_safe(&status); 9134 if (rc) 9135 return rc; 9136 9137 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status)); 9138 9139 rc = fan_get_speed(&speed); 9140 if (rc < 0) 9141 return rc; 9142 9143 /* Check for fan speeds displayed in hexadecimal */ 9144 if (!ecfw_with_fan_dec_rpm) 9145 seq_printf(m, "speed:\t\t%d\n", speed); 9146 else 9147 seq_printf(m, "speed:\t\t%x\n", speed); 9148 9149 if (fan_status_access_mode == TPACPI_FAN_RD_TPEC_NS) { 9150 /* 9151 * No full speed bit in NS EC 9152 * EC Auto mode is set by default. 9153 * No other levels settings available 9154 */ 9155 seq_printf(m, "level:\t\t%s\n", status & FAN_NS_CTRL ? "unknown" : "auto"); 9156 } else if (fan_status_access_mode == TPACPI_FAN_RD_TPEC) { 9157 if (status & TP_EC_FAN_FULLSPEED) 9158 /* Disengaged mode takes precedence */ 9159 seq_printf(m, "level:\t\tdisengaged\n"); 9160 else if (status & TP_EC_FAN_AUTO) 9161 seq_printf(m, "level:\t\tauto\n"); 9162 else 9163 seq_printf(m, "level:\t\t%d\n", status); 9164 } 9165 break; 9166 9167 case TPACPI_FAN_NONE: 9168 default: 9169 seq_printf(m, "status:\t\tnot supported\n"); 9170 } 9171 9172 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9173 seq_printf(m, "commands:\tlevel <level>"); 9174 9175 switch (fan_control_access_mode) { 9176 case TPACPI_FAN_WR_ACPI_SFAN: 9177 seq_printf(m, " (<level> is 0-7)\n"); 9178 break; 9179 9180 default: 9181 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9182 break; 9183 } 9184 } 9185 9186 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9187 seq_printf(m, "commands:\tenable, disable\n" 9188 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9189 9190 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9191 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9192 9193 return 0; 9194 } 9195 9196 static int fan_write_cmd_level(const char *cmd, int *rc) 9197 { 9198 int level; 9199 9200 if (strstarts(cmd, "level auto")) 9201 level = TP_EC_FAN_AUTO; 9202 else if (strstarts(cmd, "level disengaged") || strstarts(cmd, "level full-speed")) 9203 level = TP_EC_FAN_FULLSPEED; 9204 else if (sscanf(cmd, "level %d", &level) != 1) 9205 return 0; 9206 9207 *rc = fan_set_level_safe(level); 9208 if (*rc == -ENXIO) 9209 pr_err("level command accepted for unsupported access mode %d\n", 9210 fan_control_access_mode); 9211 else if (!*rc) 9212 tpacpi_disclose_usertask("procfs fan", 9213 "set level to %d\n", level); 9214 9215 return 1; 9216 } 9217 9218 static int fan_write_cmd_enable(const char *cmd, int *rc) 9219 { 9220 if (!strstarts(cmd, "enable")) 9221 return 0; 9222 9223 *rc = fan_set_enable(); 9224 if (*rc == -ENXIO) 9225 pr_err("enable command accepted for unsupported access mode %d\n", 9226 fan_control_access_mode); 9227 else if (!*rc) 9228 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9229 9230 return 1; 9231 } 9232 9233 static int fan_write_cmd_disable(const char *cmd, int *rc) 9234 { 9235 if (!strstarts(cmd, "disable")) 9236 return 0; 9237 9238 *rc = fan_set_disable(); 9239 if (*rc == -ENXIO) 9240 pr_err("disable command accepted for unsupported access mode %d\n", 9241 fan_control_access_mode); 9242 else if (!*rc) 9243 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9244 9245 return 1; 9246 } 9247 9248 static int fan_write_cmd_speed(const char *cmd, int *rc) 9249 { 9250 int speed; 9251 9252 /* TODO: 9253 * Support speed <low> <medium> <high> ? */ 9254 9255 if (sscanf(cmd, "speed %d", &speed) != 1) 9256 return 0; 9257 9258 *rc = fan_set_speed(speed); 9259 if (*rc == -ENXIO) 9260 pr_err("speed command accepted for unsupported access mode %d\n", 9261 fan_control_access_mode); 9262 else if (!*rc) 9263 tpacpi_disclose_usertask("procfs fan", 9264 "set speed to %d\n", speed); 9265 9266 return 1; 9267 } 9268 9269 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9270 { 9271 int interval; 9272 9273 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9274 return 0; 9275 9276 if (interval < 0 || interval > 120) 9277 *rc = -EINVAL; 9278 else { 9279 fan_watchdog_maxinterval = interval; 9280 tpacpi_disclose_usertask("procfs fan", 9281 "set watchdog timer to %d\n", 9282 interval); 9283 } 9284 9285 return 1; 9286 } 9287 9288 static int fan_write(char *buf) 9289 { 9290 char *cmd; 9291 int rc = 0; 9292 9293 while (!rc && (cmd = strsep(&buf, ","))) { 9294 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9295 fan_write_cmd_level(cmd, &rc)) && 9296 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9297 (fan_write_cmd_enable(cmd, &rc) || 9298 fan_write_cmd_disable(cmd, &rc) || 9299 fan_write_cmd_watchdog(cmd, &rc))) && 9300 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9301 fan_write_cmd_speed(cmd, &rc)) 9302 ) 9303 rc = -EINVAL; 9304 else if (!rc) 9305 fan_watchdog_reset(); 9306 } 9307 9308 return rc; 9309 } 9310 9311 static struct ibm_struct fan_driver_data = { 9312 .name = "fan", 9313 .read = fan_read, 9314 .write = fan_write, 9315 .exit = fan_exit, 9316 .suspend = fan_suspend, 9317 .resume = fan_resume, 9318 }; 9319 9320 /************************************************************************* 9321 * Mute LED subdriver 9322 */ 9323 9324 #define TPACPI_LED_MAX 2 9325 9326 struct tp_led_table { 9327 acpi_string name; 9328 int on_value; 9329 int off_value; 9330 int state; 9331 }; 9332 9333 static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9334 [LED_AUDIO_MUTE] = { 9335 .name = "SSMS", 9336 .on_value = 1, 9337 .off_value = 0, 9338 }, 9339 [LED_AUDIO_MICMUTE] = { 9340 .name = "MMTS", 9341 .on_value = 2, 9342 .off_value = 0, 9343 }, 9344 }; 9345 9346 static int mute_led_on_off(struct tp_led_table *t, bool state) 9347 { 9348 acpi_handle temp; 9349 int output; 9350 9351 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9352 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9353 return -EIO; 9354 } 9355 9356 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9357 state ? t->on_value : t->off_value)) 9358 return -EIO; 9359 9360 t->state = state; 9361 return state; 9362 } 9363 9364 static int tpacpi_led_set(int whichled, bool on) 9365 { 9366 struct tp_led_table *t; 9367 9368 t = &led_tables[whichled]; 9369 if (t->state < 0 || t->state == on) 9370 return t->state; 9371 return mute_led_on_off(t, on); 9372 } 9373 9374 static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9375 enum led_brightness brightness) 9376 { 9377 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9378 } 9379 9380 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9381 enum led_brightness brightness) 9382 { 9383 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9384 } 9385 9386 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9387 [LED_AUDIO_MUTE] = { 9388 .name = "platform::mute", 9389 .max_brightness = 1, 9390 .brightness_set_blocking = tpacpi_led_mute_set, 9391 .default_trigger = "audio-mute", 9392 }, 9393 [LED_AUDIO_MICMUTE] = { 9394 .name = "platform::micmute", 9395 .max_brightness = 1, 9396 .brightness_set_blocking = tpacpi_led_micmute_set, 9397 .default_trigger = "audio-micmute", 9398 }, 9399 }; 9400 9401 static int mute_led_init(struct ibm_init_struct *iibm) 9402 { 9403 acpi_handle temp; 9404 int i, err; 9405 9406 for (i = 0; i < TPACPI_LED_MAX; i++) { 9407 struct tp_led_table *t = &led_tables[i]; 9408 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9409 t->state = -ENODEV; 9410 continue; 9411 } 9412 9413 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9414 if (err < 0) { 9415 while (i--) 9416 led_classdev_unregister(&mute_led_cdev[i]); 9417 return err; 9418 } 9419 } 9420 return 0; 9421 } 9422 9423 static void mute_led_exit(void) 9424 { 9425 int i; 9426 9427 for (i = 0; i < TPACPI_LED_MAX; i++) { 9428 led_classdev_unregister(&mute_led_cdev[i]); 9429 tpacpi_led_set(i, false); 9430 } 9431 } 9432 9433 static void mute_led_resume(void) 9434 { 9435 int i; 9436 9437 for (i = 0; i < TPACPI_LED_MAX; i++) { 9438 struct tp_led_table *t = &led_tables[i]; 9439 if (t->state >= 0) 9440 mute_led_on_off(t, t->state); 9441 } 9442 } 9443 9444 static struct ibm_struct mute_led_driver_data = { 9445 .name = "mute_led", 9446 .exit = mute_led_exit, 9447 .resume = mute_led_resume, 9448 }; 9449 9450 /* 9451 * Battery Wear Control Driver 9452 * Contact: Ognjen Galic <smclt30p@gmail.com> 9453 */ 9454 9455 /* Metadata */ 9456 9457 #define GET_START "BCTG" 9458 #define SET_START "BCCS" 9459 #define GET_STOP "BCSG" 9460 #define SET_STOP "BCSS" 9461 #define GET_DISCHARGE "BDSG" 9462 #define SET_DISCHARGE "BDSS" 9463 #define GET_INHIBIT "BICG" 9464 #define SET_INHIBIT "BICS" 9465 9466 enum { 9467 BAT_ANY = 0, 9468 BAT_PRIMARY = 1, 9469 BAT_SECONDARY = 2 9470 }; 9471 9472 enum { 9473 /* Error condition bit */ 9474 METHOD_ERR = BIT(31), 9475 }; 9476 9477 enum { 9478 /* This is used in the get/set helpers */ 9479 THRESHOLD_START, 9480 THRESHOLD_STOP, 9481 FORCE_DISCHARGE, 9482 INHIBIT_CHARGE, 9483 }; 9484 9485 struct tpacpi_battery_data { 9486 int charge_start; 9487 int start_support; 9488 int charge_stop; 9489 int stop_support; 9490 unsigned int charge_behaviours; 9491 }; 9492 9493 struct tpacpi_battery_driver_data { 9494 struct tpacpi_battery_data batteries[3]; 9495 int individual_addressing; 9496 }; 9497 9498 static struct tpacpi_battery_driver_data battery_info; 9499 9500 /* ACPI helpers/functions/probes */ 9501 9502 /* 9503 * This evaluates a ACPI method call specific to the battery 9504 * ACPI extension. The specifics are that an error is marked 9505 * in the 32rd bit of the response, so we just check that here. 9506 */ 9507 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9508 { 9509 int response; 9510 9511 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9512 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9513 return AE_ERROR; 9514 } 9515 if (response & METHOD_ERR) { 9516 acpi_handle_err(hkey_handle, 9517 "%s evaluated but flagged as error", method); 9518 return AE_ERROR; 9519 } 9520 *ret = response; 9521 return AE_OK; 9522 } 9523 9524 static int tpacpi_battery_get(int what, int battery, int *ret) 9525 { 9526 switch (what) { 9527 case THRESHOLD_START: 9528 if (!battery_info.batteries[battery].start_support || 9529 ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery))) 9530 return -ENODEV; 9531 9532 /* The value is in the low 8 bits of the response */ 9533 *ret = *ret & 0xFF; 9534 return 0; 9535 case THRESHOLD_STOP: 9536 if (!battery_info.batteries[battery].stop_support || 9537 ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery))) 9538 return -ENODEV; 9539 /* Value is in lower 8 bits */ 9540 *ret = *ret & 0xFF; 9541 /* 9542 * On the stop value, if we return 0 that 9543 * does not make any sense. 0 means Default, which 9544 * means that charging stops at 100%, so we return 9545 * that. 9546 */ 9547 if (*ret == 0) 9548 *ret = 100; 9549 return 0; 9550 case FORCE_DISCHARGE: 9551 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, ret, battery)) 9552 return -ENODEV; 9553 /* The force discharge status is in bit 0 */ 9554 *ret = *ret & 0x01; 9555 return 0; 9556 case INHIBIT_CHARGE: 9557 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, ret, battery)) 9558 return -ENODEV; 9559 /* The inhibit charge status is in bit 0 */ 9560 *ret = *ret & 0x01; 9561 return 0; 9562 default: 9563 pr_crit("wrong parameter: %d", what); 9564 return -EINVAL; 9565 } 9566 } 9567 9568 static int tpacpi_battery_set(int what, int battery, int value) 9569 { 9570 int param, ret; 9571 /* The first 8 bits are the value of the threshold */ 9572 param = value; 9573 /* The battery ID is in bits 8-9, 2 bits */ 9574 param |= battery << 8; 9575 9576 switch (what) { 9577 case THRESHOLD_START: 9578 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9579 pr_err("failed to set charge threshold on battery %d", 9580 battery); 9581 return -ENODEV; 9582 } 9583 return 0; 9584 case THRESHOLD_STOP: 9585 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9586 pr_err("failed to set stop threshold: %d", battery); 9587 return -ENODEV; 9588 } 9589 return 0; 9590 case FORCE_DISCHARGE: 9591 /* Force discharge is in bit 0, 9592 * break on AC attach is in bit 1 (won't work on some ThinkPads), 9593 * battery ID is in bits 8-9, 2 bits. 9594 */ 9595 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_DISCHARGE, &ret, param))) { 9596 pr_err("failed to set force discharge on %d", battery); 9597 return -ENODEV; 9598 } 9599 return 0; 9600 case INHIBIT_CHARGE: 9601 /* When setting inhibit charge, we set a default value of 9602 * always breaking on AC detach and the effective time is set to 9603 * be permanent. 9604 * The battery ID is in bits 4-5, 2 bits, 9605 * the effective time is in bits 8-23, 2 bytes. 9606 * A time of FFFF indicates forever. 9607 */ 9608 param = value; 9609 param |= battery << 4; 9610 param |= 0xFFFF << 8; 9611 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_INHIBIT, &ret, param))) { 9612 pr_err("failed to set inhibit charge on %d", battery); 9613 return -ENODEV; 9614 } 9615 return 0; 9616 default: 9617 pr_crit("wrong parameter: %d", what); 9618 return -EINVAL; 9619 } 9620 } 9621 9622 static int tpacpi_battery_set_validate(int what, int battery, int value) 9623 { 9624 int ret, v; 9625 9626 ret = tpacpi_battery_set(what, battery, value); 9627 if (ret < 0) 9628 return ret; 9629 9630 ret = tpacpi_battery_get(what, battery, &v); 9631 if (ret < 0) 9632 return ret; 9633 9634 if (v == value) 9635 return 0; 9636 9637 msleep(500); 9638 9639 ret = tpacpi_battery_get(what, battery, &v); 9640 if (ret < 0) 9641 return ret; 9642 9643 if (v == value) 9644 return 0; 9645 9646 return -EIO; 9647 } 9648 9649 static int tpacpi_battery_probe(int battery) 9650 { 9651 int ret = 0; 9652 9653 memset(&battery_info.batteries[battery], 0, 9654 sizeof(battery_info.batteries[battery])); 9655 9656 /* 9657 * 1) Get the current start threshold 9658 * 2) Check for support 9659 * 3) Get the current stop threshold 9660 * 4) Check for support 9661 * 5) Get the current force discharge status 9662 * 6) Check for support 9663 * 7) Get the current inhibit charge status 9664 * 8) Check for support 9665 */ 9666 if (acpi_has_method(hkey_handle, GET_START)) { 9667 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9668 pr_err("Error probing battery %d\n", battery); 9669 return -ENODEV; 9670 } 9671 /* Individual addressing is in bit 9 */ 9672 if (ret & BIT(9)) 9673 battery_info.individual_addressing = true; 9674 /* Support is marked in bit 8 */ 9675 if (ret & BIT(8)) 9676 battery_info.batteries[battery].start_support = 1; 9677 else 9678 return -ENODEV; 9679 if (tpacpi_battery_get(THRESHOLD_START, battery, 9680 &battery_info.batteries[battery].charge_start)) { 9681 pr_err("Error probing battery %d\n", battery); 9682 return -ENODEV; 9683 } 9684 } 9685 if (acpi_has_method(hkey_handle, GET_STOP)) { 9686 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9687 pr_err("Error probing battery stop; %d\n", battery); 9688 return -ENODEV; 9689 } 9690 /* Support is marked in bit 8 */ 9691 if (ret & BIT(8)) 9692 battery_info.batteries[battery].stop_support = 1; 9693 else 9694 return -ENODEV; 9695 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9696 &battery_info.batteries[battery].charge_stop)) { 9697 pr_err("Error probing battery stop: %d\n", battery); 9698 return -ENODEV; 9699 } 9700 } 9701 if (acpi_has_method(hkey_handle, GET_DISCHARGE)) { 9702 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, &ret, battery))) { 9703 pr_err("Error probing battery discharge; %d\n", battery); 9704 return -ENODEV; 9705 } 9706 /* Support is marked in bit 8 */ 9707 if (ret & BIT(8)) 9708 battery_info.batteries[battery].charge_behaviours |= 9709 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE); 9710 } 9711 if (acpi_has_method(hkey_handle, GET_INHIBIT)) { 9712 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, &ret, battery))) { 9713 pr_err("Error probing battery inhibit charge; %d\n", battery); 9714 return -ENODEV; 9715 } 9716 /* Support is marked in bit 5 */ 9717 if (ret & BIT(5)) 9718 battery_info.batteries[battery].charge_behaviours |= 9719 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE); 9720 } 9721 9722 battery_info.batteries[battery].charge_behaviours |= 9723 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO); 9724 9725 pr_info("battery %d registered (start %d, stop %d, behaviours: 0x%x)\n", 9726 battery, 9727 battery_info.batteries[battery].charge_start, 9728 battery_info.batteries[battery].charge_stop, 9729 battery_info.batteries[battery].charge_behaviours); 9730 9731 return 0; 9732 } 9733 9734 /* General helper functions */ 9735 9736 static int tpacpi_battery_get_id(const char *battery_name) 9737 { 9738 9739 if (strcmp(battery_name, "BAT0") == 0 || 9740 tp_features.battery_force_primary) 9741 return BAT_PRIMARY; 9742 if (strcmp(battery_name, "BAT1") == 0) 9743 return BAT_SECONDARY; 9744 /* 9745 * If for some reason the battery is not BAT0 nor is it 9746 * BAT1, we will assume it's the default, first battery, 9747 * AKA primary. 9748 */ 9749 pr_warn("unknown battery %s, assuming primary", battery_name); 9750 return BAT_PRIMARY; 9751 } 9752 9753 /* sysfs interface */ 9754 9755 static ssize_t tpacpi_battery_store(int what, 9756 struct device *dev, 9757 const char *buf, size_t count) 9758 { 9759 struct power_supply *supply = to_power_supply(dev); 9760 unsigned long value; 9761 int battery, rval; 9762 /* 9763 * Some systems have support for more than 9764 * one battery. If that is the case, 9765 * tpacpi_battery_probe marked that addressing 9766 * them individually is supported, so we do that 9767 * based on the device struct. 9768 * 9769 * On systems that are not supported, we assume 9770 * the primary as most of the ACPI calls fail 9771 * with "Any Battery" as the parameter. 9772 */ 9773 if (battery_info.individual_addressing) 9774 /* BAT_PRIMARY or BAT_SECONDARY */ 9775 battery = tpacpi_battery_get_id(supply->desc->name); 9776 else 9777 battery = BAT_PRIMARY; 9778 9779 rval = kstrtoul(buf, 10, &value); 9780 if (rval) 9781 return rval; 9782 9783 switch (what) { 9784 case THRESHOLD_START: 9785 if (!battery_info.batteries[battery].start_support) 9786 return -ENODEV; 9787 /* valid values are [0, 99] */ 9788 if (value > 99) 9789 return -EINVAL; 9790 if (value > battery_info.batteries[battery].charge_stop) 9791 return -EINVAL; 9792 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9793 return -ENODEV; 9794 battery_info.batteries[battery].charge_start = value; 9795 return count; 9796 9797 case THRESHOLD_STOP: 9798 if (!battery_info.batteries[battery].stop_support) 9799 return -ENODEV; 9800 /* valid values are [1, 100] */ 9801 if (value < 1 || value > 100) 9802 return -EINVAL; 9803 if (value < battery_info.batteries[battery].charge_start) 9804 return -EINVAL; 9805 battery_info.batteries[battery].charge_stop = value; 9806 /* 9807 * When 100 is passed to stop, we need to flip 9808 * it to 0 as that the EC understands that as 9809 * "Default", which will charge to 100% 9810 */ 9811 if (value == 100) 9812 value = 0; 9813 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9814 return -EINVAL; 9815 return count; 9816 default: 9817 pr_crit("Wrong parameter: %d", what); 9818 return -EINVAL; 9819 } 9820 return count; 9821 } 9822 9823 static ssize_t tpacpi_battery_show(int what, 9824 struct device *dev, 9825 char *buf) 9826 { 9827 struct power_supply *supply = to_power_supply(dev); 9828 int ret, battery; 9829 /* 9830 * Some systems have support for more than 9831 * one battery. If that is the case, 9832 * tpacpi_battery_probe marked that addressing 9833 * them individually is supported, so we; 9834 * based on the device struct. 9835 * 9836 * On systems that are not supported, we assume 9837 * the primary as most of the ACPI calls fail 9838 * with "Any Battery" as the parameter. 9839 */ 9840 if (battery_info.individual_addressing) 9841 /* BAT_PRIMARY or BAT_SECONDARY */ 9842 battery = tpacpi_battery_get_id(supply->desc->name); 9843 else 9844 battery = BAT_PRIMARY; 9845 if (tpacpi_battery_get(what, battery, &ret)) 9846 return -ENODEV; 9847 return sysfs_emit(buf, "%d\n", ret); 9848 } 9849 9850 static ssize_t charge_control_start_threshold_show(struct device *device, 9851 struct device_attribute *attr, 9852 char *buf) 9853 { 9854 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9855 } 9856 9857 static ssize_t charge_control_end_threshold_show(struct device *device, 9858 struct device_attribute *attr, 9859 char *buf) 9860 { 9861 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9862 } 9863 9864 static ssize_t charge_behaviour_show(struct device *dev, 9865 struct device_attribute *attr, 9866 char *buf) 9867 { 9868 enum power_supply_charge_behaviour active = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO; 9869 struct power_supply *supply = to_power_supply(dev); 9870 unsigned int available; 9871 int ret, battery; 9872 9873 battery = tpacpi_battery_get_id(supply->desc->name); 9874 available = battery_info.batteries[battery].charge_behaviours; 9875 9876 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) { 9877 if (tpacpi_battery_get(FORCE_DISCHARGE, battery, &ret)) 9878 return -ENODEV; 9879 if (ret) { 9880 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE; 9881 goto out; 9882 } 9883 } 9884 9885 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) { 9886 if (tpacpi_battery_get(INHIBIT_CHARGE, battery, &ret)) 9887 return -ENODEV; 9888 if (ret) { 9889 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE; 9890 goto out; 9891 } 9892 } 9893 9894 out: 9895 return power_supply_charge_behaviour_show(dev, available, active, buf); 9896 } 9897 9898 static ssize_t charge_control_start_threshold_store(struct device *dev, 9899 struct device_attribute *attr, 9900 const char *buf, size_t count) 9901 { 9902 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9903 } 9904 9905 static ssize_t charge_control_end_threshold_store(struct device *dev, 9906 struct device_attribute *attr, 9907 const char *buf, size_t count) 9908 { 9909 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9910 } 9911 9912 static ssize_t charge_behaviour_store(struct device *dev, 9913 struct device_attribute *attr, 9914 const char *buf, size_t count) 9915 { 9916 struct power_supply *supply = to_power_supply(dev); 9917 int selected, battery, ret = 0; 9918 unsigned int available; 9919 9920 battery = tpacpi_battery_get_id(supply->desc->name); 9921 available = battery_info.batteries[battery].charge_behaviours; 9922 selected = power_supply_charge_behaviour_parse(available, buf); 9923 9924 if (selected < 0) 9925 return selected; 9926 9927 switch (selected) { 9928 case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO: 9929 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9930 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9931 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9932 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0)); 9933 if (ret < 0) 9934 return ret; 9935 break; 9936 case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE: 9937 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9938 ret = tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0); 9939 ret = min(ret, tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 1)); 9940 if (ret < 0) 9941 return ret; 9942 break; 9943 case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE: 9944 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9945 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9946 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 1)); 9947 if (ret < 0) 9948 return ret; 9949 break; 9950 default: 9951 dev_err(dev, "Unexpected charge behaviour: %d\n", selected); 9952 return -EINVAL; 9953 } 9954 9955 return count; 9956 } 9957 9958 static DEVICE_ATTR_RW(charge_control_start_threshold); 9959 static DEVICE_ATTR_RW(charge_control_end_threshold); 9960 static DEVICE_ATTR_RW(charge_behaviour); 9961 static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9962 charge_start_threshold, 9963 0644, 9964 charge_control_start_threshold_show, 9965 charge_control_start_threshold_store 9966 ); 9967 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9968 charge_stop_threshold, 9969 0644, 9970 charge_control_end_threshold_show, 9971 charge_control_end_threshold_store 9972 ); 9973 9974 static struct attribute *tpacpi_battery_attrs[] = { 9975 &dev_attr_charge_control_start_threshold.attr, 9976 &dev_attr_charge_control_end_threshold.attr, 9977 &dev_attr_charge_start_threshold.attr, 9978 &dev_attr_charge_stop_threshold.attr, 9979 &dev_attr_charge_behaviour.attr, 9980 NULL, 9981 }; 9982 9983 ATTRIBUTE_GROUPS(tpacpi_battery); 9984 9985 /* ACPI battery hooking */ 9986 9987 static int tpacpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook) 9988 { 9989 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9990 9991 if (tpacpi_battery_probe(batteryid)) 9992 return -ENODEV; 9993 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9994 return -ENODEV; 9995 return 0; 9996 } 9997 9998 static int tpacpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook) 9999 { 10000 device_remove_groups(&battery->dev, tpacpi_battery_groups); 10001 return 0; 10002 } 10003 10004 static struct acpi_battery_hook battery_hook = { 10005 .add_battery = tpacpi_battery_add, 10006 .remove_battery = tpacpi_battery_remove, 10007 .name = "ThinkPad Battery Extension", 10008 }; 10009 10010 /* Subdriver init/exit */ 10011 10012 static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 10013 /* 10014 * Individual addressing is broken on models that expose the 10015 * primary battery as BAT1. 10016 */ 10017 TPACPI_Q_LNV('G', '8', true), /* ThinkPad X131e */ 10018 TPACPI_Q_LNV('8', 'F', true), /* Thinkpad X120e */ 10019 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 10020 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 10021 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 10022 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 10023 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 10024 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 10025 }; 10026 10027 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 10028 { 10029 memset(&battery_info, 0, sizeof(battery_info)); 10030 10031 tp_features.battery_force_primary = tpacpi_check_quirks( 10032 battery_quirk_table, 10033 ARRAY_SIZE(battery_quirk_table)); 10034 10035 battery_hook_register(&battery_hook); 10036 return 0; 10037 } 10038 10039 static void tpacpi_battery_exit(void) 10040 { 10041 battery_hook_unregister(&battery_hook); 10042 } 10043 10044 static struct ibm_struct battery_driver_data = { 10045 .name = "battery", 10046 .exit = tpacpi_battery_exit, 10047 }; 10048 10049 /************************************************************************* 10050 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 10051 */ 10052 10053 static struct drm_privacy_screen *lcdshadow_dev; 10054 static acpi_handle lcdshadow_get_handle; 10055 static acpi_handle lcdshadow_set_handle; 10056 10057 static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv, 10058 enum drm_privacy_screen_status state) 10059 { 10060 int output; 10061 10062 if (WARN_ON(!mutex_is_locked(&priv->lock))) 10063 return -EIO; 10064 10065 if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state)) 10066 return -EIO; 10067 10068 priv->hw_state = priv->sw_state = state; 10069 return 0; 10070 } 10071 10072 static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv) 10073 { 10074 int output; 10075 10076 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 10077 return; 10078 10079 priv->hw_state = priv->sw_state = output & 0x1; 10080 } 10081 10082 static const struct drm_privacy_screen_ops lcdshadow_ops = { 10083 .set_sw_state = lcdshadow_set_sw_state, 10084 .get_hw_state = lcdshadow_get_hw_state, 10085 }; 10086 10087 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 10088 { 10089 acpi_status status1, status2; 10090 int output; 10091 10092 status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle); 10093 status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle); 10094 if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2)) 10095 return 0; 10096 10097 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 10098 return -EIO; 10099 10100 if (!(output & 0x10000)) 10101 return 0; 10102 10103 lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev, 10104 &lcdshadow_ops, NULL); 10105 if (IS_ERR(lcdshadow_dev)) 10106 return PTR_ERR(lcdshadow_dev); 10107 10108 return 0; 10109 } 10110 10111 static void lcdshadow_exit(void) 10112 { 10113 drm_privacy_screen_unregister(lcdshadow_dev); 10114 } 10115 10116 static void lcdshadow_resume(void) 10117 { 10118 if (!lcdshadow_dev) 10119 return; 10120 10121 mutex_lock(&lcdshadow_dev->lock); 10122 lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state); 10123 mutex_unlock(&lcdshadow_dev->lock); 10124 } 10125 10126 static int lcdshadow_read(struct seq_file *m) 10127 { 10128 if (!lcdshadow_dev) { 10129 seq_puts(m, "status:\t\tnot supported\n"); 10130 } else { 10131 seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state); 10132 seq_puts(m, "commands:\t0, 1\n"); 10133 } 10134 10135 return 0; 10136 } 10137 10138 static int lcdshadow_write(char *buf) 10139 { 10140 char *cmd; 10141 int res, state = -EINVAL; 10142 10143 if (!lcdshadow_dev) 10144 return -ENODEV; 10145 10146 while ((cmd = strsep(&buf, ","))) { 10147 res = kstrtoint(cmd, 10, &state); 10148 if (res < 0) 10149 return res; 10150 } 10151 10152 if (state >= 2 || state < 0) 10153 return -EINVAL; 10154 10155 mutex_lock(&lcdshadow_dev->lock); 10156 res = lcdshadow_set_sw_state(lcdshadow_dev, state); 10157 mutex_unlock(&lcdshadow_dev->lock); 10158 10159 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 10160 10161 return res; 10162 } 10163 10164 static struct ibm_struct lcdshadow_driver_data = { 10165 .name = "lcdshadow", 10166 .exit = lcdshadow_exit, 10167 .resume = lcdshadow_resume, 10168 .read = lcdshadow_read, 10169 .write = lcdshadow_write, 10170 }; 10171 10172 /************************************************************************* 10173 * Thinkpad sensor interfaces 10174 */ 10175 10176 #define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ 10177 #define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ 10178 #define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ 10179 #define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ 10180 10181 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 10182 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 10183 10184 #define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */ 10185 #define PALMSENSOR_ON_BIT 1 /* psensor status */ 10186 10187 static bool has_palmsensor; 10188 static bool has_lapsensor; 10189 static bool palm_state; 10190 static bool lap_state; 10191 static int dytc_version; 10192 10193 static int dytc_command(int command, int *output) 10194 { 10195 acpi_handle dytc_handle; 10196 10197 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 10198 /* Platform doesn't support DYTC */ 10199 return -ENODEV; 10200 } 10201 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 10202 return -EIO; 10203 return 0; 10204 } 10205 10206 static int lapsensor_get(bool *present, bool *state) 10207 { 10208 int output, err; 10209 10210 *present = false; 10211 err = dytc_command(DYTC_CMD_GET, &output); 10212 if (err) 10213 return err; 10214 10215 *present = true; /*If we get his far, we have lapmode support*/ 10216 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 10217 return 0; 10218 } 10219 10220 static int palmsensor_get(bool *present, bool *state) 10221 { 10222 acpi_handle psensor_handle; 10223 int output; 10224 10225 *present = false; 10226 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle))) 10227 return -ENODEV; 10228 if (!acpi_evalf(psensor_handle, &output, NULL, "d")) 10229 return -EIO; 10230 10231 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false; 10232 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false; 10233 return 0; 10234 } 10235 10236 static void lapsensor_refresh(void) 10237 { 10238 bool state; 10239 int err; 10240 10241 if (has_lapsensor) { 10242 err = lapsensor_get(&has_lapsensor, &state); 10243 if (err) 10244 return; 10245 if (lap_state != state) { 10246 lap_state = state; 10247 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 10248 } 10249 } 10250 } 10251 10252 static void palmsensor_refresh(void) 10253 { 10254 bool state; 10255 int err; 10256 10257 if (has_palmsensor) { 10258 err = palmsensor_get(&has_palmsensor, &state); 10259 if (err) 10260 return; 10261 if (palm_state != state) { 10262 palm_state = state; 10263 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor"); 10264 } 10265 } 10266 } 10267 10268 static ssize_t dytc_lapmode_show(struct device *dev, 10269 struct device_attribute *attr, 10270 char *buf) 10271 { 10272 if (has_lapsensor) 10273 return sysfs_emit(buf, "%d\n", lap_state); 10274 return sysfs_emit(buf, "\n"); 10275 } 10276 static DEVICE_ATTR_RO(dytc_lapmode); 10277 10278 static ssize_t palmsensor_show(struct device *dev, 10279 struct device_attribute *attr, 10280 char *buf) 10281 { 10282 if (has_palmsensor) 10283 return sysfs_emit(buf, "%d\n", palm_state); 10284 return sysfs_emit(buf, "\n"); 10285 } 10286 static DEVICE_ATTR_RO(palmsensor); 10287 10288 static struct attribute *proxsensor_attributes[] = { 10289 &dev_attr_dytc_lapmode.attr, 10290 &dev_attr_palmsensor.attr, 10291 NULL 10292 }; 10293 10294 static umode_t proxsensor_attr_is_visible(struct kobject *kobj, 10295 struct attribute *attr, int n) 10296 { 10297 if (attr == &dev_attr_dytc_lapmode.attr) { 10298 /* 10299 * Platforms before DYTC version 5 claim to have a lap sensor, 10300 * but it doesn't work, so we ignore them. 10301 */ 10302 if (!has_lapsensor || dytc_version < 5) 10303 return 0; 10304 } else if (attr == &dev_attr_palmsensor.attr) { 10305 if (!has_palmsensor) 10306 return 0; 10307 } 10308 10309 return attr->mode; 10310 } 10311 10312 static const struct attribute_group proxsensor_attr_group = { 10313 .is_visible = proxsensor_attr_is_visible, 10314 .attrs = proxsensor_attributes, 10315 }; 10316 10317 static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm) 10318 { 10319 int palm_err, lap_err; 10320 10321 palm_err = palmsensor_get(&has_palmsensor, &palm_state); 10322 lap_err = lapsensor_get(&has_lapsensor, &lap_state); 10323 /* If support isn't available for both devices return -ENODEV */ 10324 if ((palm_err == -ENODEV) && (lap_err == -ENODEV)) 10325 return -ENODEV; 10326 /* Otherwise, if there was an error return it */ 10327 if (palm_err && (palm_err != -ENODEV)) 10328 return palm_err; 10329 if (lap_err && (lap_err != -ENODEV)) 10330 return lap_err; 10331 10332 return 0; 10333 } 10334 10335 static struct ibm_struct proxsensor_driver_data = { 10336 .name = "proximity-sensor", 10337 }; 10338 10339 /************************************************************************* 10340 * DYTC Platform Profile interface 10341 */ 10342 10343 #define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ 10344 #define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */ 10345 #define DYTC_CMD_RESET 0x1ff /* To reset back to default */ 10346 10347 #define DYTC_CMD_FUNC_CAP 3 /* To get DYTC capabilities */ 10348 #define DYTC_FC_MMC 27 /* MMC Mode supported */ 10349 #define DYTC_FC_PSC 29 /* PSC Mode supported */ 10350 #define DYTC_FC_AMT 31 /* AMT mode supported */ 10351 10352 #define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ 10353 #define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ 10354 10355 #define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ 10356 #define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ 10357 #define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ 10358 10359 #define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ 10360 #define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ 10361 #define DYTC_FUNCTION_MMC 11 /* Function = 11, MMC mode */ 10362 #define DYTC_FUNCTION_PSC 13 /* Function = 13, PSC mode */ 10363 #define DYTC_FUNCTION_AMT 15 /* Function = 15, AMT mode */ 10364 10365 #define DYTC_MODE_AMT_ENABLE 0x1 /* Enable AMT (in balanced mode) */ 10366 #define DYTC_MODE_AMT_DISABLE 0xF /* Disable AMT (in other modes) */ 10367 10368 #define DYTC_MODE_MMC_PERFORM 2 /* High power mode aka performance */ 10369 #define DYTC_MODE_MMC_LOWPOWER 3 /* Low power mode */ 10370 #define DYTC_MODE_MMC_BALANCE 0xF /* Default mode aka balanced */ 10371 #define DYTC_MODE_MMC_DEFAULT 0 /* Default mode from MMC_GET, aka balanced */ 10372 10373 #define DYTC_MODE_PSC_LOWPOWER 3 /* Low power mode */ 10374 #define DYTC_MODE_PSC_BALANCE 5 /* Default mode aka balanced */ 10375 #define DYTC_MODE_PSC_PERFORM 7 /* High power mode aka performance */ 10376 10377 #define DYTC_MODE_PSCV9_LOWPOWER 1 /* Low power mode */ 10378 #define DYTC_MODE_PSCV9_BALANCE 3 /* Default mode aka balanced */ 10379 #define DYTC_MODE_PSCV9_PERFORM 4 /* High power mode aka performance */ 10380 10381 #define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */ 10382 #define DYTC_ERR_SUCCESS 1 /* CMD completed successful */ 10383 10384 #define DYTC_SET_COMMAND(function, mode, on) \ 10385 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ 10386 (mode) << DYTC_SET_MODE_BIT | \ 10387 (on) << DYTC_SET_VALID_BIT) 10388 10389 #define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 0) 10390 #define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 1) 10391 static int dytc_control_amt(bool enable); 10392 static bool dytc_amt_active; 10393 10394 static enum platform_profile_option dytc_current_profile; 10395 static atomic_t dytc_ignore_event = ATOMIC_INIT(0); 10396 static DEFINE_MUTEX(dytc_mutex); 10397 static int dytc_capabilities; 10398 static bool dytc_mmc_get_available; 10399 static int profile_force; 10400 10401 static int platform_psc_profile_lowpower = DYTC_MODE_PSC_LOWPOWER; 10402 static int platform_psc_profile_balanced = DYTC_MODE_PSC_BALANCE; 10403 static int platform_psc_profile_performance = DYTC_MODE_PSC_PERFORM; 10404 10405 static int convert_dytc_to_profile(int funcmode, int dytcmode, 10406 enum platform_profile_option *profile) 10407 { 10408 switch (funcmode) { 10409 case DYTC_FUNCTION_MMC: 10410 switch (dytcmode) { 10411 case DYTC_MODE_MMC_LOWPOWER: 10412 *profile = PLATFORM_PROFILE_LOW_POWER; 10413 break; 10414 case DYTC_MODE_MMC_DEFAULT: 10415 case DYTC_MODE_MMC_BALANCE: 10416 *profile = PLATFORM_PROFILE_BALANCED; 10417 break; 10418 case DYTC_MODE_MMC_PERFORM: 10419 *profile = PLATFORM_PROFILE_PERFORMANCE; 10420 break; 10421 default: /* Unknown mode */ 10422 return -EINVAL; 10423 } 10424 return 0; 10425 case DYTC_FUNCTION_PSC: 10426 if (dytcmode == platform_psc_profile_lowpower) 10427 *profile = PLATFORM_PROFILE_LOW_POWER; 10428 else if (dytcmode == platform_psc_profile_balanced) 10429 *profile = PLATFORM_PROFILE_BALANCED; 10430 else if (dytcmode == platform_psc_profile_performance) 10431 *profile = PLATFORM_PROFILE_PERFORMANCE; 10432 else 10433 return -EINVAL; 10434 10435 return 0; 10436 case DYTC_FUNCTION_AMT: 10437 /* For now return balanced. It's the closest we have to 'auto' */ 10438 *profile = PLATFORM_PROFILE_BALANCED; 10439 return 0; 10440 default: 10441 /* Unknown function */ 10442 pr_debug("unknown function 0x%x\n", funcmode); 10443 return -EOPNOTSUPP; 10444 } 10445 return 0; 10446 } 10447 10448 static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) 10449 { 10450 switch (profile) { 10451 case PLATFORM_PROFILE_LOW_POWER: 10452 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10453 *perfmode = DYTC_MODE_MMC_LOWPOWER; 10454 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10455 *perfmode = platform_psc_profile_lowpower; 10456 break; 10457 case PLATFORM_PROFILE_BALANCED: 10458 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10459 *perfmode = DYTC_MODE_MMC_BALANCE; 10460 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10461 *perfmode = platform_psc_profile_balanced; 10462 break; 10463 case PLATFORM_PROFILE_PERFORMANCE: 10464 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10465 *perfmode = DYTC_MODE_MMC_PERFORM; 10466 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10467 *perfmode = platform_psc_profile_performance; 10468 break; 10469 default: /* Unknown profile */ 10470 return -EOPNOTSUPP; 10471 } 10472 return 0; 10473 } 10474 10475 /* 10476 * dytc_profile_get: Function to register with platform_profile 10477 * handler. Returns current platform profile. 10478 */ 10479 static int dytc_profile_get(struct device *dev, 10480 enum platform_profile_option *profile) 10481 { 10482 *profile = dytc_current_profile; 10483 return 0; 10484 } 10485 10486 static int dytc_control_amt(bool enable) 10487 { 10488 int dummy; 10489 int err; 10490 int cmd; 10491 10492 if (!(dytc_capabilities & BIT(DYTC_FC_AMT))) { 10493 pr_warn("Attempting to toggle AMT on a system that doesn't advertise support\n"); 10494 return -ENODEV; 10495 } 10496 10497 if (enable) 10498 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_ENABLE, enable); 10499 else 10500 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_DISABLE, enable); 10501 10502 pr_debug("%sabling AMT (cmd 0x%x)", enable ? "en":"dis", cmd); 10503 err = dytc_command(cmd, &dummy); 10504 if (err) 10505 return err; 10506 dytc_amt_active = enable; 10507 return 0; 10508 } 10509 10510 /* 10511 * Helper function - check if we are in CQL mode and if we are 10512 * - disable CQL, 10513 * - run the command 10514 * - enable CQL 10515 * If not in CQL mode, just run the command 10516 */ 10517 static int dytc_cql_command(int command, int *output) 10518 { 10519 int err, cmd_err, dummy; 10520 int cur_funcmode; 10521 10522 /* Determine if we are in CQL mode. This alters the commands we do */ 10523 err = dytc_command(DYTC_CMD_GET, output); 10524 if (err) 10525 return err; 10526 10527 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10528 /* Check if we're OK to return immediately */ 10529 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) 10530 return 0; 10531 10532 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10533 atomic_inc(&dytc_ignore_event); 10534 err = dytc_command(DYTC_DISABLE_CQL, &dummy); 10535 if (err) 10536 return err; 10537 } 10538 10539 cmd_err = dytc_command(command, output); 10540 /* Check return condition after we've restored CQL state */ 10541 10542 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10543 err = dytc_command(DYTC_ENABLE_CQL, &dummy); 10544 if (err) 10545 return err; 10546 } 10547 return cmd_err; 10548 } 10549 10550 /* 10551 * dytc_profile_set: Function to register with platform_profile 10552 * handler. Sets current platform profile. 10553 */ 10554 static int dytc_profile_set(struct device *dev, 10555 enum platform_profile_option profile) 10556 { 10557 int perfmode; 10558 int output; 10559 int err; 10560 10561 err = mutex_lock_interruptible(&dytc_mutex); 10562 if (err) 10563 return err; 10564 10565 err = convert_profile_to_dytc(profile, &perfmode); 10566 if (err) 10567 goto unlock; 10568 10569 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10570 if (profile == PLATFORM_PROFILE_BALANCED) { 10571 /* 10572 * To get back to balanced mode we need to issue a reset command. 10573 * Note we still need to disable CQL mode before hand and re-enable 10574 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays 10575 * stuck at 0 for aprox. 30 minutes. 10576 */ 10577 err = dytc_cql_command(DYTC_CMD_RESET, &output); 10578 if (err) 10579 goto unlock; 10580 } else { 10581 /* Determine if we are in CQL mode. This alters the commands we do */ 10582 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), 10583 &output); 10584 if (err) 10585 goto unlock; 10586 } 10587 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { 10588 err = dytc_command(DYTC_SET_COMMAND(DYTC_FUNCTION_PSC, perfmode, 1), &output); 10589 if (err) 10590 goto unlock; 10591 10592 /* system supports AMT, activate it when on balanced */ 10593 if (dytc_capabilities & BIT(DYTC_FC_AMT)) 10594 dytc_control_amt(profile == PLATFORM_PROFILE_BALANCED); 10595 } 10596 /* Success - update current profile */ 10597 dytc_current_profile = profile; 10598 unlock: 10599 mutex_unlock(&dytc_mutex); 10600 return err; 10601 } 10602 10603 static int dytc_profile_probe(void *drvdata, unsigned long *choices) 10604 { 10605 set_bit(PLATFORM_PROFILE_LOW_POWER, choices); 10606 set_bit(PLATFORM_PROFILE_BALANCED, choices); 10607 set_bit(PLATFORM_PROFILE_PERFORMANCE, choices); 10608 10609 return 0; 10610 } 10611 10612 static const struct platform_profile_ops dytc_profile_ops = { 10613 .probe = dytc_profile_probe, 10614 .profile_get = dytc_profile_get, 10615 .profile_set = dytc_profile_set, 10616 }; 10617 10618 static void dytc_profile_refresh(void) 10619 { 10620 enum platform_profile_option profile; 10621 int output = 0, err = 0; 10622 int perfmode, funcmode = 0; 10623 10624 mutex_lock(&dytc_mutex); 10625 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10626 if (dytc_mmc_get_available) 10627 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10628 else 10629 err = dytc_cql_command(DYTC_CMD_GET, &output); 10630 funcmode = DYTC_FUNCTION_MMC; 10631 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { 10632 err = dytc_command(DYTC_CMD_GET, &output); 10633 /* Check if we are PSC mode, or have AMT enabled */ 10634 funcmode = (output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10635 } else { /* Unknown profile mode */ 10636 err = -ENODEV; 10637 } 10638 mutex_unlock(&dytc_mutex); 10639 if (err) 10640 return; 10641 10642 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; 10643 err = convert_dytc_to_profile(funcmode, perfmode, &profile); 10644 if (!err && profile != dytc_current_profile) { 10645 dytc_current_profile = profile; 10646 platform_profile_notify(tpacpi_pprof); 10647 } 10648 } 10649 10650 static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) 10651 { 10652 int err, output; 10653 10654 err = dytc_command(DYTC_CMD_QUERY, &output); 10655 if (err) 10656 return err; 10657 10658 if (output & BIT(DYTC_QUERY_ENABLE_BIT)) 10659 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; 10660 10661 dbg_printk(TPACPI_DBG_INIT, "DYTC version %d\n", dytc_version); 10662 /* Check DYTC is enabled and supports mode setting */ 10663 if (dytc_version < 5) 10664 return -ENODEV; 10665 10666 /* Check what capabilities are supported */ 10667 err = dytc_command(DYTC_CMD_FUNC_CAP, &dytc_capabilities); 10668 if (err) 10669 return err; 10670 10671 /* Check if user wants to override the profile selection */ 10672 if (profile_force) { 10673 switch (profile_force) { 10674 case -1: 10675 dytc_capabilities = 0; 10676 break; 10677 case 1: 10678 dytc_capabilities = BIT(DYTC_FC_MMC); 10679 break; 10680 case 2: 10681 dytc_capabilities = BIT(DYTC_FC_PSC); 10682 break; 10683 } 10684 pr_debug("Profile selection forced: 0x%x\n", dytc_capabilities); 10685 } 10686 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { /* MMC MODE */ 10687 pr_debug("MMC is supported\n"); 10688 /* 10689 * Check if MMC_GET functionality available 10690 * Version > 6 and return success from MMC_GET command 10691 */ 10692 dytc_mmc_get_available = false; 10693 if (dytc_version >= 6) { 10694 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10695 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS)) 10696 dytc_mmc_get_available = true; 10697 } 10698 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { /* PSC MODE */ 10699 pr_debug("PSC is supported\n"); 10700 if (dytc_version >= 9) { /* update profiles for DYTC 9 and up */ 10701 platform_psc_profile_lowpower = DYTC_MODE_PSCV9_LOWPOWER; 10702 platform_psc_profile_balanced = DYTC_MODE_PSCV9_BALANCE; 10703 platform_psc_profile_performance = DYTC_MODE_PSCV9_PERFORM; 10704 } 10705 } else { 10706 dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n"); 10707 return -ENODEV; 10708 } 10709 10710 dbg_printk(TPACPI_DBG_INIT, 10711 "DYTC version %d: thermal mode available\n", dytc_version); 10712 10713 /* Create platform_profile structure and register */ 10714 tpacpi_pprof = platform_profile_register(&tpacpi_pdev->dev, "thinkpad-acpi-profile", 10715 NULL, &dytc_profile_ops); 10716 /* 10717 * If for some reason platform_profiles aren't enabled 10718 * don't quit terminally. 10719 */ 10720 if (IS_ERR(tpacpi_pprof)) 10721 return -ENODEV; 10722 10723 /* Ensure initial values are correct */ 10724 dytc_profile_refresh(); 10725 10726 /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */ 10727 if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10728 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); 10729 10730 return 0; 10731 } 10732 10733 static void dytc_profile_exit(void) 10734 { 10735 if (!IS_ERR_OR_NULL(tpacpi_pprof)) 10736 platform_profile_remove(tpacpi_pprof); 10737 } 10738 10739 static struct ibm_struct dytc_profile_driver_data = { 10740 .name = "dytc-profile", 10741 .exit = dytc_profile_exit, 10742 }; 10743 10744 /************************************************************************* 10745 * Keyboard language interface 10746 */ 10747 10748 struct keyboard_lang_data { 10749 const char *lang_str; 10750 int lang_code; 10751 }; 10752 10753 static const struct keyboard_lang_data keyboard_lang_data[] = { 10754 {"be", 0x080c}, 10755 {"cz", 0x0405}, 10756 {"da", 0x0406}, 10757 {"de", 0x0c07}, 10758 {"en", 0x0000}, 10759 {"es", 0x2c0a}, 10760 {"et", 0x0425}, 10761 {"fr", 0x040c}, 10762 {"fr-ch", 0x100c}, 10763 {"hu", 0x040e}, 10764 {"it", 0x0410}, 10765 {"jp", 0x0411}, 10766 {"nl", 0x0413}, 10767 {"nn", 0x0414}, 10768 {"pl", 0x0415}, 10769 {"pt", 0x0816}, 10770 {"sl", 0x041b}, 10771 {"sv", 0x081d}, 10772 {"tr", 0x041f}, 10773 }; 10774 10775 static int set_keyboard_lang_command(int command) 10776 { 10777 acpi_handle sskl_handle; 10778 int output; 10779 10780 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) { 10781 /* Platform doesn't support SSKL */ 10782 return -ENODEV; 10783 } 10784 10785 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command)) 10786 return -EIO; 10787 10788 return 0; 10789 } 10790 10791 static int get_keyboard_lang(int *output) 10792 { 10793 acpi_handle gskl_handle; 10794 int kbd_lang; 10795 10796 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) { 10797 /* Platform doesn't support GSKL */ 10798 return -ENODEV; 10799 } 10800 10801 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000)) 10802 return -EIO; 10803 10804 /* 10805 * METHOD_ERR gets returned on devices where there are no special (e.g. '=', 10806 * '(' and ')') keys which use layout dependent key-press emulation. 10807 */ 10808 if (kbd_lang & METHOD_ERR) 10809 return -ENODEV; 10810 10811 *output = kbd_lang; 10812 10813 return 0; 10814 } 10815 10816 /* sysfs keyboard language entry */ 10817 static ssize_t keyboard_lang_show(struct device *dev, 10818 struct device_attribute *attr, 10819 char *buf) 10820 { 10821 int output, err, i, len = 0; 10822 10823 err = get_keyboard_lang(&output); 10824 if (err) 10825 return err; 10826 10827 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10828 if (i) 10829 len += sysfs_emit_at(buf, len, "%s", " "); 10830 10831 if (output == keyboard_lang_data[i].lang_code) { 10832 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str); 10833 } else { 10834 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str); 10835 } 10836 } 10837 len += sysfs_emit_at(buf, len, "\n"); 10838 10839 return len; 10840 } 10841 10842 static ssize_t keyboard_lang_store(struct device *dev, 10843 struct device_attribute *attr, 10844 const char *buf, size_t count) 10845 { 10846 int err, i; 10847 bool lang_found = false; 10848 int lang_code = 0; 10849 10850 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10851 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) { 10852 lang_code = keyboard_lang_data[i].lang_code; 10853 lang_found = true; 10854 break; 10855 } 10856 } 10857 10858 if (lang_found) { 10859 lang_code = lang_code | 1 << 24; 10860 10861 /* Set language code */ 10862 err = set_keyboard_lang_command(lang_code); 10863 if (err) 10864 return err; 10865 } else { 10866 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n"); 10867 return -EINVAL; 10868 } 10869 10870 tpacpi_disclose_usertask(attr->attr.name, 10871 "keyboard language is set to %s\n", buf); 10872 10873 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang"); 10874 10875 return count; 10876 } 10877 static DEVICE_ATTR_RW(keyboard_lang); 10878 10879 static struct attribute *kbdlang_attributes[] = { 10880 &dev_attr_keyboard_lang.attr, 10881 NULL 10882 }; 10883 10884 static umode_t kbdlang_attr_is_visible(struct kobject *kobj, 10885 struct attribute *attr, int n) 10886 { 10887 return tp_features.kbd_lang ? attr->mode : 0; 10888 } 10889 10890 static const struct attribute_group kbdlang_attr_group = { 10891 .is_visible = kbdlang_attr_is_visible, 10892 .attrs = kbdlang_attributes, 10893 }; 10894 10895 static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm) 10896 { 10897 int err, output; 10898 10899 err = get_keyboard_lang(&output); 10900 tp_features.kbd_lang = !err; 10901 return err; 10902 } 10903 10904 static struct ibm_struct kbdlang_driver_data = { 10905 .name = "kbdlang", 10906 }; 10907 10908 /************************************************************************* 10909 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN 10910 * and WLAN feature. 10911 */ 10912 #define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000 10913 #define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4) 10914 #define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8) 10915 static bool has_antennatype; 10916 static int wwan_antennatype; 10917 10918 static int dprc_command(int command, int *output) 10919 { 10920 acpi_handle dprc_handle; 10921 10922 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) { 10923 /* Platform doesn't support DPRC */ 10924 return -ENODEV; 10925 } 10926 10927 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command)) 10928 return -EIO; 10929 10930 /* 10931 * METHOD_ERR gets returned on devices where few commands are not supported 10932 * for example command to get WWAN Antenna type command is not supported on 10933 * some devices. 10934 */ 10935 if (*output & METHOD_ERR) 10936 return -ENODEV; 10937 10938 return 0; 10939 } 10940 10941 static int get_wwan_antenna(int *wwan_antennatype) 10942 { 10943 int output, err; 10944 10945 /* Get current Antenna type */ 10946 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output); 10947 if (err) 10948 return err; 10949 10950 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT) 10951 *wwan_antennatype = 1; 10952 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT) 10953 *wwan_antennatype = 2; 10954 else 10955 return -ENODEV; 10956 10957 return 0; 10958 } 10959 10960 /* sysfs wwan antenna type entry */ 10961 static ssize_t wwan_antenna_type_show(struct device *dev, 10962 struct device_attribute *attr, 10963 char *buf) 10964 { 10965 switch (wwan_antennatype) { 10966 case 1: 10967 return sysfs_emit(buf, "type a\n"); 10968 case 2: 10969 return sysfs_emit(buf, "type b\n"); 10970 default: 10971 return -ENODATA; 10972 } 10973 } 10974 static DEVICE_ATTR_RO(wwan_antenna_type); 10975 10976 static struct attribute *dprc_attributes[] = { 10977 &dev_attr_wwan_antenna_type.attr, 10978 NULL 10979 }; 10980 10981 static umode_t dprc_attr_is_visible(struct kobject *kobj, 10982 struct attribute *attr, int n) 10983 { 10984 return has_antennatype ? attr->mode : 0; 10985 } 10986 10987 static const struct attribute_group dprc_attr_group = { 10988 .is_visible = dprc_attr_is_visible, 10989 .attrs = dprc_attributes, 10990 }; 10991 10992 static int tpacpi_dprc_init(struct ibm_init_struct *iibm) 10993 { 10994 int err; 10995 10996 err = get_wwan_antenna(&wwan_antennatype); 10997 if (err) 10998 return err; 10999 11000 has_antennatype = true; 11001 return 0; 11002 } 11003 11004 static struct ibm_struct dprc_driver_data = { 11005 .name = "dprc", 11006 }; 11007 11008 /* 11009 * Auxmac 11010 * 11011 * This auxiliary mac address is enabled in the bios through the 11012 * MAC Address Pass-through feature. In most cases, there are three 11013 * possibilities: Internal Mac, Second Mac, and disabled. 11014 * 11015 */ 11016 11017 #define AUXMAC_LEN 12 11018 #define AUXMAC_START 9 11019 #define AUXMAC_STRLEN 22 11020 #define AUXMAC_BEGIN_MARKER 8 11021 #define AUXMAC_END_MARKER 21 11022 11023 static char auxmac[AUXMAC_LEN + 1]; 11024 11025 static int auxmac_init(struct ibm_init_struct *iibm) 11026 { 11027 acpi_status status; 11028 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 11029 union acpi_object *obj; 11030 11031 status = acpi_evaluate_object(NULL, "\\MACA", NULL, &buffer); 11032 11033 if (ACPI_FAILURE(status)) 11034 return -ENODEV; 11035 11036 obj = buffer.pointer; 11037 11038 if (obj->type != ACPI_TYPE_STRING || obj->string.length != AUXMAC_STRLEN) { 11039 pr_info("Invalid buffer for MAC address pass-through.\n"); 11040 goto auxmacinvalid; 11041 } 11042 11043 if (obj->string.pointer[AUXMAC_BEGIN_MARKER] != '#' || 11044 obj->string.pointer[AUXMAC_END_MARKER] != '#') { 11045 pr_info("Invalid header for MAC address pass-through.\n"); 11046 goto auxmacinvalid; 11047 } 11048 11049 if (strncmp(obj->string.pointer + AUXMAC_START, "XXXXXXXXXXXX", AUXMAC_LEN) != 0) 11050 strscpy(auxmac, obj->string.pointer + AUXMAC_START, sizeof(auxmac)); 11051 else 11052 strscpy(auxmac, "disabled", sizeof(auxmac)); 11053 11054 free: 11055 kfree(obj); 11056 return 0; 11057 11058 auxmacinvalid: 11059 strscpy(auxmac, "unavailable", sizeof(auxmac)); 11060 goto free; 11061 } 11062 11063 static struct ibm_struct auxmac_data = { 11064 .name = "auxmac", 11065 }; 11066 11067 static DEVICE_STRING_ATTR_RO(auxmac, 0444, auxmac); 11068 11069 static umode_t auxmac_attr_is_visible(struct kobject *kobj, 11070 struct attribute *attr, int n) 11071 { 11072 return auxmac[0] == 0 ? 0 : attr->mode; 11073 } 11074 11075 static struct attribute *auxmac_attributes[] = { 11076 &dev_attr_auxmac.attr.attr, 11077 NULL 11078 }; 11079 11080 static const struct attribute_group auxmac_attr_group = { 11081 .is_visible = auxmac_attr_is_visible, 11082 .attrs = auxmac_attributes, 11083 }; 11084 11085 /************************************************************************* 11086 * HWDD subdriver, for the Lenovo Hardware Damage Detection feature. 11087 */ 11088 11089 #define HWDD_GET_DMG_USBC 0x80000001 11090 #define HWDD_GET_CAP 0 11091 #define HWDD_NOT_SUPPORTED BIT(31) 11092 #define HWDD_SUPPORT_USBC BIT(0) 11093 11094 #define PORT_STATUS GENMASK(7, 4) 11095 #define LID_STATUS GENMASK(11, 8) 11096 #define BASE_STATUS GENMASK(15, 12) 11097 #define POS_STATUS GENMASK(3, 2) 11098 #define PANEL_STATUS GENMASK(1, 0) 11099 11100 #define PORT_DETAIL_OFFSET 16 11101 11102 #define PANEL_TOP 0 11103 #define PANEL_BASE 1 11104 #define PANEL_LEFT 2 11105 #define PANEL_RIGHT 3 11106 11107 #define POS_LEFT 0 11108 #define POS_CENTER 1 11109 #define POS_RIGHT 2 11110 11111 #define NUM_PORTS 4 11112 11113 static bool hwdd_support_available; 11114 static bool ucdd_supported; 11115 11116 static int hwdd_command(int command, int *output) 11117 { 11118 acpi_handle hwdd_handle; 11119 11120 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "HWDD", &hwdd_handle))) 11121 return -ENODEV; 11122 11123 if (!acpi_evalf(hwdd_handle, output, NULL, "dd", command)) 11124 return -EIO; 11125 11126 return 0; 11127 } 11128 11129 static bool display_damage(char *buf, int *count, char *type, unsigned int dmg_status) 11130 { 11131 unsigned char lid_status, base_status, port_status; 11132 unsigned char loc_status, pos_status, panel_status; 11133 bool damage_detected = false; 11134 int i; 11135 11136 port_status = FIELD_GET(PORT_STATUS, dmg_status); 11137 lid_status = FIELD_GET(LID_STATUS, dmg_status); 11138 base_status = FIELD_GET(BASE_STATUS, dmg_status); 11139 for (i = 0; i < NUM_PORTS; i++) { 11140 if (!(dmg_status & BIT(i)) || !(port_status & BIT(i))) 11141 continue; 11142 11143 *count += sysfs_emit_at(buf, *count, "%s: ", type); 11144 loc_status = (dmg_status >> (PORT_DETAIL_OFFSET + (4 * i))) & 0xF; 11145 pos_status = FIELD_GET(POS_STATUS, loc_status); 11146 panel_status = FIELD_GET(PANEL_STATUS, loc_status); 11147 11148 if (lid_status & BIT(i)) 11149 *count += sysfs_emit_at(buf, *count, "Lid, "); 11150 if (base_status & BIT(i)) 11151 *count += sysfs_emit_at(buf, *count, "Base, "); 11152 11153 switch (pos_status) { 11154 case PANEL_TOP: 11155 *count += sysfs_emit_at(buf, *count, "Top, "); 11156 break; 11157 case PANEL_BASE: 11158 *count += sysfs_emit_at(buf, *count, "Bottom, "); 11159 break; 11160 case PANEL_LEFT: 11161 *count += sysfs_emit_at(buf, *count, "Left, "); 11162 break; 11163 case PANEL_RIGHT: 11164 *count += sysfs_emit_at(buf, *count, "Right, "); 11165 break; 11166 default: 11167 pr_err("Unexpected value %d in switch statement\n", pos_status); 11168 } 11169 11170 switch (panel_status) { 11171 case POS_LEFT: 11172 *count += sysfs_emit_at(buf, *count, "Left port\n"); 11173 break; 11174 case POS_CENTER: 11175 *count += sysfs_emit_at(buf, *count, "Center port\n"); 11176 break; 11177 case POS_RIGHT: 11178 *count += sysfs_emit_at(buf, *count, "Right port\n"); 11179 break; 11180 default: 11181 *count += sysfs_emit_at(buf, *count, "Undefined\n"); 11182 break; 11183 } 11184 damage_detected = true; 11185 } 11186 return damage_detected; 11187 } 11188 11189 /* sysfs type-c damage detection detail */ 11190 static ssize_t hwdd_detail_show(struct device *dev, 11191 struct device_attribute *attr, 11192 char *buf) 11193 { 11194 unsigned int damage_status; 11195 int err, count = 0; 11196 11197 if (!ucdd_supported) 11198 return -ENODEV; 11199 11200 /* Get USB TYPE-C damage status */ 11201 err = hwdd_command(HWDD_GET_DMG_USBC, &damage_status); 11202 if (err) 11203 return err; 11204 11205 if (!display_damage(buf, &count, "Type-C", damage_status)) 11206 count += sysfs_emit_at(buf, count, "No damage detected\n"); 11207 11208 return count; 11209 } 11210 11211 /* sysfs type-c damage detection capability */ 11212 static ssize_t hwdd_status_show(struct device *dev, 11213 struct device_attribute *attr, 11214 char *buf) 11215 { 11216 unsigned int damage_status, port_status; 11217 int err, i; 11218 11219 if (!ucdd_supported) 11220 return -ENODEV; 11221 11222 /* Get USB TYPE-C damage status */ 11223 err = hwdd_command(HWDD_GET_DMG_USBC, &damage_status); 11224 if (err) 11225 return err; 11226 11227 port_status = FIELD_GET(PORT_STATUS, damage_status); 11228 for (i = 0; i < NUM_PORTS; i++) { 11229 if (!(damage_status & BIT(i))) 11230 continue; 11231 if (port_status & BIT(i)) 11232 return sysfs_emit(buf, "1\n"); 11233 } 11234 11235 return sysfs_emit(buf, "0\n"); 11236 } 11237 static DEVICE_ATTR_RO(hwdd_status); 11238 static DEVICE_ATTR_RO(hwdd_detail); 11239 11240 static struct attribute *hwdd_attributes[] = { 11241 &dev_attr_hwdd_status.attr, 11242 &dev_attr_hwdd_detail.attr, 11243 NULL 11244 }; 11245 11246 static umode_t hwdd_attr_is_visible(struct kobject *kobj, 11247 struct attribute *attr, int n) 11248 { 11249 return hwdd_support_available ? attr->mode : 0; 11250 } 11251 11252 static const struct attribute_group hwdd_attr_group = { 11253 .is_visible = hwdd_attr_is_visible, 11254 .attrs = hwdd_attributes, 11255 }; 11256 11257 static int tpacpi_hwdd_init(struct ibm_init_struct *iibm) 11258 { 11259 int err, output; 11260 11261 /* Below command checks the HWDD damage capability */ 11262 err = hwdd_command(HWDD_GET_CAP, &output); 11263 if (err) 11264 return err; 11265 11266 if (!(output & HWDD_NOT_SUPPORTED)) 11267 return -ENODEV; 11268 11269 hwdd_support_available = true; 11270 11271 /* 11272 * BIT(0) is assigned to check capability of damage detection is 11273 * supported for USB Type-C port or not. 11274 */ 11275 if (output & HWDD_SUPPORT_USBC) 11276 ucdd_supported = true; 11277 11278 return err; 11279 } 11280 11281 static struct ibm_struct hwdd_driver_data = { 11282 .name = "hwdd", 11283 }; 11284 11285 /* --------------------------------------------------------------------- */ 11286 11287 static struct attribute *tpacpi_driver_attributes[] = { 11288 &driver_attr_debug_level.attr, 11289 &driver_attr_version.attr, 11290 &driver_attr_interface_version.attr, 11291 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11292 &driver_attr_wlsw_emulstate.attr, 11293 &driver_attr_bluetooth_emulstate.attr, 11294 &driver_attr_wwan_emulstate.attr, 11295 &driver_attr_uwb_emulstate.attr, 11296 #endif 11297 NULL 11298 }; 11299 11300 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11301 static umode_t tpacpi_attr_is_visible(struct kobject *kobj, 11302 struct attribute *attr, int n) 11303 { 11304 if (attr == &driver_attr_wlsw_emulstate.attr) { 11305 if (!dbg_wlswemul) 11306 return 0; 11307 } else if (attr == &driver_attr_bluetooth_emulstate.attr) { 11308 if (!dbg_bluetoothemul) 11309 return 0; 11310 } else if (attr == &driver_attr_wwan_emulstate.attr) { 11311 if (!dbg_wwanemul) 11312 return 0; 11313 } else if (attr == &driver_attr_uwb_emulstate.attr) { 11314 if (!dbg_uwbemul) 11315 return 0; 11316 } 11317 11318 return attr->mode; 11319 } 11320 #endif 11321 11322 static const struct attribute_group tpacpi_driver_attr_group = { 11323 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11324 .is_visible = tpacpi_attr_is_visible, 11325 #endif 11326 .attrs = tpacpi_driver_attributes, 11327 }; 11328 11329 static const struct attribute_group *tpacpi_driver_groups[] = { 11330 &tpacpi_driver_attr_group, 11331 NULL, 11332 }; 11333 11334 static const struct attribute_group *tpacpi_groups[] = { 11335 &adaptive_kbd_attr_group, 11336 &hotkey_attr_group, 11337 &bluetooth_attr_group, 11338 &wan_attr_group, 11339 &cmos_attr_group, 11340 &proxsensor_attr_group, 11341 &kbdlang_attr_group, 11342 &dprc_attr_group, 11343 &auxmac_attr_group, 11344 &hwdd_attr_group, 11345 NULL, 11346 }; 11347 11348 static const struct attribute_group *tpacpi_hwmon_groups[] = { 11349 &thermal_attr_group, 11350 &temp_label_attr_group, 11351 &fan_attr_group, 11352 NULL, 11353 }; 11354 11355 static const struct attribute_group *tpacpi_hwmon_driver_groups[] = { 11356 &fan_driver_attr_group, 11357 NULL, 11358 }; 11359 11360 /**************************************************************************** 11361 **************************************************************************** 11362 * 11363 * Platform drivers 11364 * 11365 **************************************************************************** 11366 ****************************************************************************/ 11367 11368 static struct platform_driver tpacpi_pdriver = { 11369 .driver = { 11370 .name = TPACPI_DRVR_NAME, 11371 .pm = &tpacpi_pm, 11372 .groups = tpacpi_driver_groups, 11373 .dev_groups = tpacpi_groups, 11374 }, 11375 .shutdown = tpacpi_shutdown_handler, 11376 }; 11377 11378 static struct platform_driver tpacpi_hwmon_pdriver = { 11379 .driver = { 11380 .name = TPACPI_HWMON_DRVR_NAME, 11381 .groups = tpacpi_hwmon_driver_groups, 11382 }, 11383 }; 11384 11385 /**************************************************************************** 11386 **************************************************************************** 11387 * 11388 * Infrastructure 11389 * 11390 **************************************************************************** 11391 ****************************************************************************/ 11392 11393 /* 11394 * HKEY event callout for other subdrivers go here 11395 * (yes, it is ugly, but it is quick, safe, and gets the job done 11396 */ 11397 static bool tpacpi_driver_event(const unsigned int hkey_event) 11398 { 11399 int camera_shutter_state; 11400 11401 switch (hkey_event) { 11402 case TP_HKEY_EV_BRGHT_UP: 11403 case TP_HKEY_EV_BRGHT_DOWN: 11404 if (ibm_backlight_device) 11405 tpacpi_brightness_notify_change(); 11406 /* 11407 * Key press events are suppressed by default hotkey_user_mask 11408 * and should still be reported if explicitly requested. 11409 */ 11410 return false; 11411 case TP_HKEY_EV_VOL_UP: 11412 case TP_HKEY_EV_VOL_DOWN: 11413 case TP_HKEY_EV_VOL_MUTE: 11414 if (alsa_card) 11415 volume_alsa_notify_change(); 11416 11417 /* Key events are suppressed by default hotkey_user_mask */ 11418 return false; 11419 case TP_HKEY_EV_KBD_LIGHT: 11420 if (tp_features.kbdlight) { 11421 enum led_brightness brightness; 11422 11423 mutex_lock(&kbdlight_mutex); 11424 11425 /* 11426 * Check the brightness actually changed, setting the brightness 11427 * through kbdlight_set_level() also triggers this event. 11428 */ 11429 brightness = kbdlight_sysfs_get(NULL); 11430 if (kbdlight_brightness != brightness) { 11431 kbdlight_brightness = brightness; 11432 led_classdev_notify_brightness_hw_changed( 11433 &tpacpi_led_kbdlight.led_classdev, brightness); 11434 } 11435 11436 mutex_unlock(&kbdlight_mutex); 11437 } 11438 /* Key events are suppressed by default hotkey_user_mask */ 11439 return false; 11440 case TP_HKEY_EV_DFR_CHANGE_ROW: 11441 adaptive_keyboard_change_row(); 11442 return true; 11443 case TP_HKEY_EV_DFR_S_QUICKVIEW_ROW: 11444 adaptive_keyboard_s_quickview_row(); 11445 return true; 11446 case TP_HKEY_EV_THM_CSM_COMPLETED: 11447 lapsensor_refresh(); 11448 /* If we are already accessing DYTC then skip dytc update */ 11449 if (!atomic_add_unless(&dytc_ignore_event, -1, 0)) 11450 dytc_profile_refresh(); 11451 11452 return true; 11453 case TP_HKEY_EV_PRIVACYGUARD_TOGGLE: 11454 if (lcdshadow_dev) { 11455 enum drm_privacy_screen_status old_hw_state; 11456 bool changed; 11457 11458 mutex_lock(&lcdshadow_dev->lock); 11459 old_hw_state = lcdshadow_dev->hw_state; 11460 lcdshadow_get_hw_state(lcdshadow_dev); 11461 changed = lcdshadow_dev->hw_state != old_hw_state; 11462 mutex_unlock(&lcdshadow_dev->lock); 11463 11464 if (changed) 11465 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 11466 } 11467 return true; 11468 case TP_HKEY_EV_AMT_TOGGLE: 11469 /* If we're enabling AMT we need to force balanced mode */ 11470 if (!dytc_amt_active) 11471 /* This will also set AMT mode enabled */ 11472 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); 11473 else 11474 dytc_control_amt(!dytc_amt_active); 11475 11476 return true; 11477 case TP_HKEY_EV_CAMERASHUTTER_TOGGLE: 11478 camera_shutter_state = get_camera_shutter(); 11479 if (camera_shutter_state < 0) { 11480 pr_err("Error retrieving camera shutter state after shutter event\n"); 11481 return true; 11482 } 11483 mutex_lock(&tpacpi_inputdev_send_mutex); 11484 11485 input_report_switch(tpacpi_inputdev, SW_CAMERA_LENS_COVER, camera_shutter_state); 11486 input_sync(tpacpi_inputdev); 11487 11488 mutex_unlock(&tpacpi_inputdev_send_mutex); 11489 return true; 11490 case TP_HKEY_EV_DOUBLETAP_TOGGLE: 11491 tp_features.trackpoint_doubletap = !tp_features.trackpoint_doubletap; 11492 return true; 11493 case TP_HKEY_EV_PROFILE_TOGGLE: 11494 case TP_HKEY_EV_PROFILE_TOGGLE2: 11495 platform_profile_cycle(); 11496 return true; 11497 } 11498 11499 return false; 11500 } 11501 11502 /* --------------------------------------------------------------------- */ 11503 11504 /* /proc support */ 11505 static struct proc_dir_entry *proc_dir; 11506 11507 /* 11508 * Module and infrastructure proble, init and exit handling 11509 */ 11510 11511 static bool force_load; 11512 11513 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 11514 static const char * __init str_supported(int is_supported) 11515 { 11516 static char text_unsupported[] __initdata = "not supported"; 11517 11518 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 11519 } 11520 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 11521 11522 static void ibm_exit(struct ibm_struct *ibm) 11523 { 11524 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 11525 11526 list_del_init(&ibm->all_drivers); 11527 11528 if (ibm->flags.acpi_notify_installed) { 11529 dbg_printk(TPACPI_DBG_EXIT, 11530 "%s: acpi_remove_notify_handler\n", ibm->name); 11531 BUG_ON(!ibm->acpi); 11532 acpi_remove_notify_handler(*ibm->acpi->handle, 11533 ibm->acpi->type, 11534 dispatch_acpi_notify); 11535 ibm->flags.acpi_notify_installed = 0; 11536 } 11537 11538 if (ibm->flags.proc_created) { 11539 dbg_printk(TPACPI_DBG_EXIT, 11540 "%s: remove_proc_entry\n", ibm->name); 11541 remove_proc_entry(ibm->name, proc_dir); 11542 ibm->flags.proc_created = 0; 11543 } 11544 11545 if (ibm->flags.acpi_driver_registered) { 11546 dbg_printk(TPACPI_DBG_EXIT, 11547 "%s: acpi_bus_unregister_driver\n", ibm->name); 11548 BUG_ON(!ibm->acpi); 11549 acpi_bus_unregister_driver(ibm->acpi->driver); 11550 kfree(ibm->acpi->driver); 11551 ibm->acpi->driver = NULL; 11552 ibm->flags.acpi_driver_registered = 0; 11553 } 11554 11555 if (ibm->flags.init_called && ibm->exit) { 11556 ibm->exit(); 11557 ibm->flags.init_called = 0; 11558 } 11559 11560 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 11561 } 11562 11563 static int __init ibm_init(struct ibm_init_struct *iibm) 11564 { 11565 int ret; 11566 struct ibm_struct *ibm = iibm->data; 11567 struct proc_dir_entry *entry; 11568 11569 BUG_ON(ibm == NULL); 11570 11571 INIT_LIST_HEAD(&ibm->all_drivers); 11572 11573 if (ibm->flags.experimental && !experimental) 11574 return 0; 11575 11576 dbg_printk(TPACPI_DBG_INIT, 11577 "probing for %s\n", ibm->name); 11578 11579 if (iibm->init) { 11580 ret = iibm->init(iibm); 11581 if (ret > 0 || ret == -ENODEV) 11582 return 0; /* subdriver functionality not available */ 11583 if (ret) 11584 return ret; 11585 11586 ibm->flags.init_called = 1; 11587 } 11588 11589 if (ibm->acpi) { 11590 if (ibm->acpi->hid) { 11591 ret = register_tpacpi_subdriver(ibm); 11592 if (ret) 11593 goto err_out; 11594 } 11595 11596 if (ibm->acpi->notify) { 11597 ret = setup_acpi_notify(ibm); 11598 if (ret == -ENODEV) { 11599 pr_notice("disabling subdriver %s\n", 11600 ibm->name); 11601 ret = 0; 11602 goto err_out; 11603 } 11604 if (ret < 0) 11605 goto err_out; 11606 } 11607 } 11608 11609 dbg_printk(TPACPI_DBG_INIT, 11610 "%s installed\n", ibm->name); 11611 11612 if (ibm->read) { 11613 umode_t mode = iibm->base_procfs_mode; 11614 11615 if (!mode) 11616 mode = S_IRUGO; 11617 if (ibm->write) 11618 mode |= S_IWUSR; 11619 entry = proc_create_data(ibm->name, mode, proc_dir, 11620 &dispatch_proc_ops, ibm); 11621 if (!entry) { 11622 pr_err("unable to create proc entry %s\n", ibm->name); 11623 ret = -ENODEV; 11624 goto err_out; 11625 } 11626 ibm->flags.proc_created = 1; 11627 } 11628 11629 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 11630 11631 return 0; 11632 11633 err_out: 11634 dbg_printk(TPACPI_DBG_INIT, 11635 "%s: at error exit path with result %d\n", 11636 ibm->name, ret); 11637 11638 ibm_exit(ibm); 11639 return (ret < 0) ? ret : 0; 11640 } 11641 11642 /* Probing */ 11643 11644 static char __init tpacpi_parse_fw_id(const char * const s, 11645 u32 *model, u16 *release) 11646 { 11647 int i; 11648 11649 if (!s || strlen(s) < 8) 11650 goto invalid; 11651 11652 for (i = 0; i < 8; i++) 11653 if (!((s[i] >= '0' && s[i] <= '9') || 11654 (s[i] >= 'A' && s[i] <= 'Z'))) 11655 goto invalid; 11656 11657 /* 11658 * Most models: xxyTkkWW (#.##c) 11659 * Ancient 570/600 and -SL lacks (#.##c) 11660 */ 11661 if (s[3] == 'T' || s[3] == 'N') { 11662 *model = TPID(s[0], s[1]); 11663 *release = TPVER(s[4], s[5]); 11664 return s[2]; 11665 11666 /* New models: xxxyTkkW (#.##c); T550 and some others */ 11667 } else if (s[4] == 'T' || s[4] == 'N') { 11668 *model = TPID3(s[0], s[1], s[2]); 11669 *release = TPVER(s[5], s[6]); 11670 return s[3]; 11671 } 11672 11673 invalid: 11674 return '\0'; 11675 } 11676 11677 #define EC_FW_STRING_LEN 18 11678 11679 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 11680 { 11681 char *ec_fw_string = (char *) private; 11682 const char *dmi_data = (const char *)dm; 11683 /* 11684 * ThinkPad Embedded Controller Program Table on newer models 11685 * 11686 * Offset | Name | Width | Description 11687 * ---------------------------------------------------- 11688 * 0x00 | Type | BYTE | 0x8C 11689 * 0x01 | Length | BYTE | 11690 * 0x02 | Handle | WORD | Varies 11691 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 11692 * 0x0A | OEM struct offset | BYTE | 0x0B 11693 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 11694 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 11695 * 0x0D | ECP version ID | STR ID | 11696 * 0x0E | ECP release date | STR ID | 11697 */ 11698 11699 /* Return if data structure not match */ 11700 if (dm->type != 140 || dm->length < 0x0F || 11701 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 11702 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 11703 dmi_data[0x0C] != 0x01) 11704 return; 11705 11706 /* fwstr is the first 8byte string */ 11707 BUILD_BUG_ON(EC_FW_STRING_LEN <= 8); 11708 memcpy(ec_fw_string, dmi_data + 0x0F, 8); 11709 } 11710 11711 /* returns 0 - probe ok, or < 0 - probe error. 11712 * Probe ok doesn't mean thinkpad found. 11713 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 11714 static int __must_check __init get_thinkpad_model_data( 11715 struct thinkpad_id_data *tp) 11716 { 11717 const struct dmi_device *dev = NULL; 11718 char ec_fw_string[EC_FW_STRING_LEN] = {0}; 11719 char const *s; 11720 char t; 11721 11722 if (!tp) 11723 return -EINVAL; 11724 11725 memset(tp, 0, sizeof(*tp)); 11726 11727 if (dmi_name_in_vendors("IBM")) 11728 tp->vendor = PCI_VENDOR_ID_IBM; 11729 else if (dmi_name_in_vendors("LENOVO")) 11730 tp->vendor = PCI_VENDOR_ID_LENOVO; 11731 else if (dmi_name_in_vendors("NEC")) 11732 tp->vendor = PCI_VENDOR_ID_LENOVO; 11733 else 11734 return 0; 11735 11736 s = dmi_get_system_info(DMI_BIOS_VERSION); 11737 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 11738 if (s && !tp->bios_version_str) 11739 return -ENOMEM; 11740 11741 /* Really ancient ThinkPad 240X will fail this, which is fine */ 11742 t = tpacpi_parse_fw_id(tp->bios_version_str, 11743 &tp->bios_model, &tp->bios_release); 11744 if (t != 'E' && t != 'C') 11745 return 0; 11746 11747 /* 11748 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 11749 * X32 or newer, all Z series; Some models must have an 11750 * up-to-date BIOS or they will not be detected. 11751 * 11752 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11753 */ 11754 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 11755 if (sscanf(dev->name, 11756 "IBM ThinkPad Embedded Controller -[%17c", 11757 ec_fw_string) == 1) { 11758 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 11759 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 11760 break; 11761 } 11762 } 11763 11764 /* Newer ThinkPads have different EC program info table */ 11765 if (!ec_fw_string[0]) 11766 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 11767 11768 if (ec_fw_string[0]) { 11769 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 11770 if (!tp->ec_version_str) 11771 return -ENOMEM; 11772 11773 t = tpacpi_parse_fw_id(ec_fw_string, 11774 &tp->ec_model, &tp->ec_release); 11775 if (t != 'H') { 11776 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 11777 ec_fw_string); 11778 pr_notice("please report this to %s\n", TPACPI_MAIL); 11779 } 11780 } 11781 11782 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 11783 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 11784 tp->model_str = kstrdup(s, GFP_KERNEL); 11785 if (!tp->model_str) 11786 return -ENOMEM; 11787 } else { 11788 s = dmi_get_system_info(DMI_BIOS_VENDOR); 11789 if (s && !(strncasecmp(s, "Lenovo", 6))) { 11790 tp->model_str = kstrdup(s, GFP_KERNEL); 11791 if (!tp->model_str) 11792 return -ENOMEM; 11793 } 11794 } 11795 11796 s = dmi_get_system_info(DMI_PRODUCT_NAME); 11797 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 11798 if (s && !tp->nummodel_str) 11799 return -ENOMEM; 11800 11801 return 0; 11802 } 11803 11804 static int __init probe_for_thinkpad(void) 11805 { 11806 int is_thinkpad; 11807 11808 if (acpi_disabled) 11809 return -ENODEV; 11810 11811 /* It would be dangerous to run the driver in this case */ 11812 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 11813 return -ENODEV; 11814 11815 /* 11816 * Non-ancient models have better DMI tagging, but very old models 11817 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 11818 */ 11819 is_thinkpad = (thinkpad_id.model_str != NULL) || 11820 (thinkpad_id.ec_model != 0) || 11821 tpacpi_is_fw_known(); 11822 11823 /* The EC handler is required */ 11824 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 11825 if (!ec_handle) { 11826 if (is_thinkpad) 11827 pr_err("Not yet supported ThinkPad detected!\n"); 11828 return -ENODEV; 11829 } 11830 11831 if (!is_thinkpad && !force_load) 11832 return -ENODEV; 11833 11834 return 0; 11835 } 11836 11837 static void __init thinkpad_acpi_init_banner(void) 11838 { 11839 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 11840 pr_info("%s\n", TPACPI_URL); 11841 11842 pr_info("ThinkPad BIOS %s, EC %s\n", 11843 (thinkpad_id.bios_version_str) ? 11844 thinkpad_id.bios_version_str : "unknown", 11845 (thinkpad_id.ec_version_str) ? 11846 thinkpad_id.ec_version_str : "unknown"); 11847 11848 BUG_ON(!thinkpad_id.vendor); 11849 11850 if (thinkpad_id.model_str) 11851 pr_info("%s %s, model %s\n", 11852 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 11853 "IBM" : ((thinkpad_id.vendor == 11854 PCI_VENDOR_ID_LENOVO) ? 11855 "Lenovo" : "Unknown vendor"), 11856 thinkpad_id.model_str, 11857 (thinkpad_id.nummodel_str) ? 11858 thinkpad_id.nummodel_str : "unknown"); 11859 } 11860 11861 /* Module init, exit, parameters */ 11862 11863 static struct ibm_init_struct ibms_init[] __initdata = { 11864 { 11865 .data = &thinkpad_acpi_driver_data, 11866 }, 11867 { 11868 .init = hotkey_init, 11869 .data = &hotkey_driver_data, 11870 }, 11871 { 11872 .init = bluetooth_init, 11873 .data = &bluetooth_driver_data, 11874 }, 11875 { 11876 .init = wan_init, 11877 .data = &wan_driver_data, 11878 }, 11879 { 11880 .init = uwb_init, 11881 .data = &uwb_driver_data, 11882 }, 11883 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 11884 { 11885 .init = video_init, 11886 .base_procfs_mode = S_IRUSR, 11887 .data = &video_driver_data, 11888 }, 11889 #endif 11890 { 11891 .init = kbdlight_init, 11892 .data = &kbdlight_driver_data, 11893 }, 11894 { 11895 .init = light_init, 11896 .data = &light_driver_data, 11897 }, 11898 { 11899 .init = cmos_init, 11900 .data = &cmos_driver_data, 11901 }, 11902 { 11903 .init = led_init, 11904 .data = &led_driver_data, 11905 }, 11906 { 11907 .init = beep_init, 11908 .data = &beep_driver_data, 11909 }, 11910 { 11911 .init = thermal_init, 11912 .data = &thermal_driver_data, 11913 }, 11914 { 11915 .init = brightness_init, 11916 .data = &brightness_driver_data, 11917 }, 11918 { 11919 .init = volume_init, 11920 .data = &volume_driver_data, 11921 }, 11922 { 11923 .init = fan_init, 11924 .data = &fan_driver_data, 11925 }, 11926 { 11927 .init = mute_led_init, 11928 .data = &mute_led_driver_data, 11929 }, 11930 { 11931 .init = tpacpi_battery_init, 11932 .data = &battery_driver_data, 11933 }, 11934 { 11935 .init = tpacpi_lcdshadow_init, 11936 .data = &lcdshadow_driver_data, 11937 }, 11938 { 11939 .init = tpacpi_proxsensor_init, 11940 .data = &proxsensor_driver_data, 11941 }, 11942 { 11943 .init = tpacpi_dytc_profile_init, 11944 .data = &dytc_profile_driver_data, 11945 }, 11946 { 11947 .init = tpacpi_kbdlang_init, 11948 .data = &kbdlang_driver_data, 11949 }, 11950 { 11951 .init = tpacpi_dprc_init, 11952 .data = &dprc_driver_data, 11953 }, 11954 { 11955 .init = auxmac_init, 11956 .data = &auxmac_data, 11957 }, 11958 { 11959 .init = tpacpi_hwdd_init, 11960 .data = &hwdd_driver_data, 11961 }, 11962 }; 11963 11964 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 11965 { 11966 unsigned int i; 11967 struct ibm_struct *ibm; 11968 11969 if (!kp || !kp->name || !val) 11970 return -EINVAL; 11971 11972 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11973 ibm = ibms_init[i].data; 11974 if (!ibm || !ibm->name) 11975 continue; 11976 11977 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 11978 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 11979 return -ENOSPC; 11980 strscpy(ibms_init[i].param, val); 11981 return 0; 11982 } 11983 } 11984 11985 return -EINVAL; 11986 } 11987 11988 module_param(experimental, int, 0444); 11989 MODULE_PARM_DESC(experimental, 11990 "Enables experimental features when non-zero"); 11991 11992 module_param_named(debug, dbg_level, uint, 0); 11993 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 11994 11995 module_param(force_load, bool, 0444); 11996 MODULE_PARM_DESC(force_load, 11997 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 11998 11999 module_param_named(fan_control, fan_control_allowed, bool, 0444); 12000 MODULE_PARM_DESC(fan_control, 12001 "Enables setting fan parameters features when true"); 12002 12003 module_param_named(brightness_mode, brightness_mode, uint, 0444); 12004 MODULE_PARM_DESC(brightness_mode, 12005 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 12006 12007 module_param(brightness_enable, uint, 0444); 12008 MODULE_PARM_DESC(brightness_enable, 12009 "Enables backlight control when 1, disables when 0"); 12010 12011 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 12012 module_param_named(volume_mode, volume_mode, uint, 0444); 12013 MODULE_PARM_DESC(volume_mode, 12014 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 12015 12016 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 12017 MODULE_PARM_DESC(volume_capabilities, 12018 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 12019 12020 module_param_named(volume_control, volume_control_allowed, bool, 0444); 12021 MODULE_PARM_DESC(volume_control, 12022 "Enables software override for the console audio control when true"); 12023 12024 module_param_named(software_mute, software_mute_requested, bool, 0444); 12025 MODULE_PARM_DESC(software_mute, 12026 "Request full software mute control"); 12027 12028 /* ALSA module API parameters */ 12029 module_param_named(index, alsa_index, int, 0444); 12030 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 12031 module_param_named(id, alsa_id, charp, 0444); 12032 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 12033 module_param_named(enable, alsa_enable, bool, 0444); 12034 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 12035 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 12036 12037 /* The module parameter can't be read back, that's why 0 is used here */ 12038 #define TPACPI_PARAM(feature) \ 12039 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 12040 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 12041 12042 TPACPI_PARAM(hotkey); 12043 TPACPI_PARAM(bluetooth); 12044 TPACPI_PARAM(video); 12045 TPACPI_PARAM(light); 12046 TPACPI_PARAM(cmos); 12047 TPACPI_PARAM(led); 12048 TPACPI_PARAM(beep); 12049 TPACPI_PARAM(brightness); 12050 TPACPI_PARAM(volume); 12051 TPACPI_PARAM(fan); 12052 12053 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 12054 module_param(dbg_wlswemul, uint, 0444); 12055 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 12056 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 12057 MODULE_PARM_DESC(wlsw_state, 12058 "Initial state of the emulated WLSW switch"); 12059 12060 module_param(dbg_bluetoothemul, uint, 0444); 12061 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 12062 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 12063 MODULE_PARM_DESC(bluetooth_state, 12064 "Initial state of the emulated bluetooth switch"); 12065 12066 module_param(dbg_wwanemul, uint, 0444); 12067 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 12068 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 12069 MODULE_PARM_DESC(wwan_state, 12070 "Initial state of the emulated WWAN switch"); 12071 12072 module_param(dbg_uwbemul, uint, 0444); 12073 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 12074 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 12075 MODULE_PARM_DESC(uwb_state, 12076 "Initial state of the emulated UWB switch"); 12077 #endif 12078 12079 module_param(profile_force, int, 0444); 12080 MODULE_PARM_DESC(profile_force, "Force profile mode. -1=off, 1=MMC, 2=PSC"); 12081 12082 static void thinkpad_acpi_module_exit(void) 12083 { 12084 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 12085 12086 if (tpacpi_sensors_pdev) { 12087 platform_driver_unregister(&tpacpi_hwmon_pdriver); 12088 platform_device_unregister(tpacpi_sensors_pdev); 12089 } 12090 12091 if (tp_features.platform_drv_registered) 12092 platform_driver_unregister(&tpacpi_pdriver); 12093 if (tpacpi_pdev) 12094 platform_device_unregister(tpacpi_pdev); 12095 12096 if (proc_dir) 12097 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 12098 if (tpacpi_wq) 12099 destroy_workqueue(tpacpi_wq); 12100 12101 kfree(thinkpad_id.bios_version_str); 12102 kfree(thinkpad_id.ec_version_str); 12103 kfree(thinkpad_id.model_str); 12104 kfree(thinkpad_id.nummodel_str); 12105 } 12106 12107 static void tpacpi_subdrivers_release(void *data) 12108 { 12109 struct ibm_struct *ibm, *itmp; 12110 12111 list_for_each_entry_safe_reverse(ibm, itmp, &tpacpi_all_drivers, all_drivers) 12112 ibm_exit(ibm); 12113 12114 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 12115 } 12116 12117 static int __init tpacpi_pdriver_probe(struct platform_device *pdev) 12118 { 12119 int ret; 12120 12121 ret = devm_mutex_init(&pdev->dev, &tpacpi_inputdev_send_mutex); 12122 if (ret) 12123 return ret; 12124 12125 tpacpi_inputdev = devm_input_allocate_device(&pdev->dev); 12126 if (!tpacpi_inputdev) 12127 return -ENOMEM; 12128 12129 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 12130 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 12131 tpacpi_inputdev->id.bustype = BUS_HOST; 12132 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 12133 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 12134 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 12135 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 12136 12137 /* Init subdriver dependencies */ 12138 tpacpi_detect_brightness_capabilities(); 12139 12140 /* Init subdrivers */ 12141 for (unsigned int i = 0; i < ARRAY_SIZE(ibms_init); i++) { 12142 ret = ibm_init(&ibms_init[i]); 12143 if (ret >= 0 && *ibms_init[i].param) 12144 ret = ibms_init[i].data->write(ibms_init[i].param); 12145 if (ret < 0) { 12146 tpacpi_subdrivers_release(NULL); 12147 return ret; 12148 } 12149 } 12150 12151 ret = devm_add_action_or_reset(&pdev->dev, tpacpi_subdrivers_release, NULL); 12152 if (ret) 12153 return ret; 12154 12155 ret = input_register_device(tpacpi_inputdev); 12156 if (ret < 0) 12157 pr_err("unable to register input device\n"); 12158 12159 return ret; 12160 } 12161 12162 static int __init tpacpi_hwmon_pdriver_probe(struct platform_device *pdev) 12163 { 12164 tpacpi_hwmon = devm_hwmon_device_register_with_groups(&pdev->dev, TPACPI_NAME, 12165 NULL, tpacpi_hwmon_groups); 12166 if (IS_ERR(tpacpi_hwmon)) 12167 pr_err("unable to register hwmon device\n"); 12168 12169 return PTR_ERR_OR_ZERO(tpacpi_hwmon); 12170 } 12171 12172 static int __init thinkpad_acpi_module_init(void) 12173 { 12174 const struct dmi_system_id *dmi_id; 12175 int ret; 12176 acpi_object_type obj_type; 12177 12178 tpacpi_lifecycle = TPACPI_LIFE_INIT; 12179 12180 /* Driver-level probe */ 12181 12182 ret = get_thinkpad_model_data(&thinkpad_id); 12183 if (ret) { 12184 pr_err("unable to get DMI data: %d\n", ret); 12185 thinkpad_acpi_module_exit(); 12186 return ret; 12187 } 12188 ret = probe_for_thinkpad(); 12189 if (ret) { 12190 thinkpad_acpi_module_exit(); 12191 return ret; 12192 } 12193 12194 /* Driver initialization */ 12195 12196 thinkpad_acpi_init_banner(); 12197 tpacpi_check_outdated_fw(); 12198 12199 TPACPI_ACPIHANDLE_INIT(ecrd); 12200 TPACPI_ACPIHANDLE_INIT(ecwr); 12201 12202 /* 12203 * Quirk: in some models (e.g. X380 Yoga), an object named ECRD 12204 * exists, but it is a register, not a method. 12205 */ 12206 if (ecrd_handle) { 12207 acpi_get_type(ecrd_handle, &obj_type); 12208 if (obj_type != ACPI_TYPE_METHOD) 12209 ecrd_handle = NULL; 12210 } 12211 if (ecwr_handle) { 12212 acpi_get_type(ecwr_handle, &obj_type); 12213 if (obj_type != ACPI_TYPE_METHOD) 12214 ecwr_handle = NULL; 12215 } 12216 12217 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 12218 if (!tpacpi_wq) { 12219 thinkpad_acpi_module_exit(); 12220 return -ENOMEM; 12221 } 12222 12223 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 12224 if (!proc_dir) { 12225 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 12226 thinkpad_acpi_module_exit(); 12227 return -ENODEV; 12228 } 12229 12230 dmi_id = dmi_first_match(fwbug_list); 12231 if (dmi_id) 12232 tp_features.quirks = dmi_id->driver_data; 12233 12234 /* Device initialization */ 12235 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, PLATFORM_DEVID_NONE, 12236 NULL, 0); 12237 if (IS_ERR(tpacpi_pdev)) { 12238 ret = PTR_ERR(tpacpi_pdev); 12239 tpacpi_pdev = NULL; 12240 pr_err("unable to register platform device\n"); 12241 thinkpad_acpi_module_exit(); 12242 return ret; 12243 } 12244 12245 ret = platform_driver_probe(&tpacpi_pdriver, tpacpi_pdriver_probe); 12246 if (ret) { 12247 pr_err("unable to register main platform driver\n"); 12248 thinkpad_acpi_module_exit(); 12249 return ret; 12250 } 12251 tp_features.platform_drv_registered = 1; 12252 12253 tpacpi_sensors_pdev = platform_create_bundle(&tpacpi_hwmon_pdriver, 12254 tpacpi_hwmon_pdriver_probe, 12255 NULL, 0, NULL, 0); 12256 if (IS_ERR(tpacpi_sensors_pdev)) { 12257 ret = PTR_ERR(tpacpi_sensors_pdev); 12258 tpacpi_sensors_pdev = NULL; 12259 pr_err("unable to register hwmon platform device/driver bundle\n"); 12260 thinkpad_acpi_module_exit(); 12261 return ret; 12262 } 12263 12264 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 12265 12266 return 0; 12267 } 12268 12269 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 12270 12271 /* 12272 * This will autoload the driver in almost every ThinkPad 12273 * in widespread use. 12274 * 12275 * Only _VERY_ old models, like the 240, 240x and 570 lack 12276 * the HKEY event interface. 12277 */ 12278 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 12279 12280 /* 12281 * DMI matching for module autoloading 12282 * 12283 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 12284 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 12285 * 12286 * Only models listed in thinkwiki will be supported, so add yours 12287 * if it is not there yet. 12288 */ 12289 #define IBM_BIOS_MODULE_ALIAS(__type) \ 12290 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 12291 12292 /* Ancient thinkpad BIOSes have to be identified by 12293 * BIOS type or model number, and there are far less 12294 * BIOS types than model numbers... */ 12295 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 12296 12297 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 12298 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 12299 MODULE_DESCRIPTION(TPACPI_DESC); 12300 MODULE_VERSION(TPACPI_VERSION); 12301 MODULE_LICENSE("GPL"); 12302 12303 module_init(thinkpad_acpi_module_init); 12304 module_exit(thinkpad_acpi_module_exit); 12305