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