1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * thinkpad_acpi.c - ThinkPad ACPI Extras 4 * 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> 7 */ 8 9#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 10 11#define TPACPI_VERSION "0.26" 12#define TPACPI_SYSFS_VERSION 0x030000 13 14/* 15 * Changelog: 16 * 2007-10-20 changelog trimmed down 17 * 18 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to 19 * drivers/misc. 20 * 21 * 2006-11-22 0.13 new maintainer 22 * changelog now lives in git commit history, and will 23 * not be updated further in-file. 24 * 25 * 2005-03-17 0.11 support for 600e, 770x 26 * thanks to Jamie Lentin <lentinj@dial.pipex.com> 27 * 28 * 2005-01-16 0.9 use MODULE_VERSION 29 * thanks to Henrik Brix Andersen <brix@gentoo.org> 30 * fix parameter passing on module loading 31 * thanks to Rusty Russell <rusty@rustcorp.com.au> 32 * thanks to Jim Radford <radford@blackbean.org> 33 * 2004-11-08 0.8 fix init error case, don't return from a macro 34 * thanks to Chris Wright <chrisw@osdl.org> 35 */ 36 37#include <linux/kernel.h> 38#include <linux/module.h> 39#include <linux/init.h> 40#include <linux/types.h> 41#include <linux/string.h> 42#include <linux/list.h> 43#include <linux/mutex.h> 44#include <linux/sched.h> 45#include <linux/sched/signal.h> 46#include <linux/kthread.h> 47#include <linux/freezer.h> 48#include <linux/delay.h> 49#include <linux/slab.h> 50#include <linux/nvram.h> 51#include <linux/proc_fs.h> 52#include <linux/seq_file.h> 53#include <linux/sysfs.h> 54#include <linux/backlight.h> 55#include <linux/bitops.h> 56#include <linux/fb.h> 57#include <linux/platform_device.h> 58#include <linux/hwmon.h> 59#include <linux/hwmon-sysfs.h> 60#include <linux/input.h> 61#include <linux/leds.h> 62#include <linux/rfkill.h> 63#include <linux/dmi.h> 64#include <linux/jiffies.h> 65#include <linux/workqueue.h> 66#include <linux/acpi.h> 67#include <linux/pci.h> 68#include <linux/power_supply.h> 69#include <sound/core.h> 70#include <sound/control.h> 71#include <sound/initval.h> 72#include <linux/uaccess.h> 73#include <acpi/battery.h> 74#include <acpi/video.h> 75 76/* ThinkPad CMOS commands */ 77#define TP_CMOS_VOLUME_DOWN 0 78#define TP_CMOS_VOLUME_UP 1 79#define TP_CMOS_VOLUME_MUTE 2 80#define TP_CMOS_BRIGHTNESS_UP 4 81#define TP_CMOS_BRIGHTNESS_DOWN 5 82#define TP_CMOS_THINKLIGHT_ON 12 83#define TP_CMOS_THINKLIGHT_OFF 13 84 85/* NVRAM Addresses */ 86enum tp_nvram_addr { 87 TP_NVRAM_ADDR_HK2 = 0x57, 88 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 89 TP_NVRAM_ADDR_VIDEO = 0x59, 90 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 91 TP_NVRAM_ADDR_MIXER = 0x60, 92}; 93 94/* NVRAM bit masks */ 95enum { 96 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 97 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 98 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 99 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 100 TP_NVRAM_MASK_THINKLIGHT = 0x10, 101 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 102 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 103 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 104 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 105 TP_NVRAM_MASK_MUTE = 0x40, 106 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 107 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 108 TP_NVRAM_POS_LEVEL_VOLUME = 0, 109}; 110 111/* Misc NVRAM-related */ 112enum { 113 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 114}; 115 116/* ACPI HIDs */ 117#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 118#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 119#define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 120#define TPACPI_ACPI_EC_HID "PNP0C09" 121 122/* Input IDs */ 123#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 124#define TPACPI_HKEY_INPUT_VERSION 0x4101 125 126/* ACPI \WGSV commands */ 127enum { 128 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 129 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 130 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 131 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 132}; 133 134/* TP_ACPI_WGSV_GET_STATE bits */ 135enum { 136 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 137 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 138 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 139 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 140 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 141 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 142 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 143 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 144 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 145 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 146}; 147 148/* HKEY events */ 149enum tpacpi_hkey_event_t { 150 /* Hotkey-related */ 151 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ 152 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 153 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 154 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 155 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 156 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 157 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 158 159 /* Reasons for waking up from S3/S4 */ 160 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 161 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 162 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 163 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 164 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 165 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 166 167 /* Auto-sleep after eject request */ 168 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 169 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 170 171 /* Misc bay events */ 172 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 173 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 174 or port replicator */ 175 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 176 dock or port replicator */ 177 178 /* User-interface events */ 179 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 180 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 181 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 182 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 183 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 184 * enter/leave tablet mode 185 */ 186 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 187 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 188 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 189 190 /* Key-related user-interface events */ 191 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 192 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 193 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 194 195 /* Thermal events */ 196 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 197 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 198 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 199 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 200 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ 201 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set 202 * command completed. Related to 203 * AML DYTC */ 204 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation 205 * changed. Related to AML GMTS */ 206 207 /* AC-related events */ 208 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 209 210 /* Further user-interface events */ 211 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ 212 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ 213 214 /* Misc */ 215 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 216}; 217 218/**************************************************************************** 219 * Main driver 220 */ 221 222#define TPACPI_NAME "thinkpad" 223#define TPACPI_DESC "ThinkPad ACPI Extras" 224#define TPACPI_FILE TPACPI_NAME "_acpi" 225#define TPACPI_URL "http://ibm-acpi.sf.net/" 226#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 227 228#define TPACPI_PROC_DIR "ibm" 229#define TPACPI_ACPI_EVENT_PREFIX "ibm" 230#define TPACPI_DRVR_NAME TPACPI_FILE 231#define TPACPI_DRVR_SHORTNAME "tpacpi" 232#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 233 234#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 235#define TPACPI_WORKQUEUE_NAME "ktpacpid" 236 237#define TPACPI_MAX_ACPI_ARGS 3 238 239/* Debugging printk groups */ 240#define TPACPI_DBG_ALL 0xffff 241#define TPACPI_DBG_DISCLOSETASK 0x8000 242#define TPACPI_DBG_INIT 0x0001 243#define TPACPI_DBG_EXIT 0x0002 244#define TPACPI_DBG_RFKILL 0x0004 245#define TPACPI_DBG_HKEY 0x0008 246#define TPACPI_DBG_FAN 0x0010 247#define TPACPI_DBG_BRGHT 0x0020 248#define TPACPI_DBG_MIXER 0x0040 249 250#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") 251#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") 252#define strlencmp(a, b) (strncmp((a), (b), strlen(b))) 253 254 255/**************************************************************************** 256 * Driver-wide structs and misc. variables 257 */ 258 259struct ibm_struct; 260 261struct tp_acpi_drv_struct { 262 const struct acpi_device_id *hid; 263 struct acpi_driver *driver; 264 265 void (*notify) (struct ibm_struct *, u32); 266 acpi_handle *handle; 267 u32 type; 268 struct acpi_device *device; 269}; 270 271struct ibm_struct { 272 char *name; 273 274 int (*read) (struct seq_file *); 275 int (*write) (char *); 276 void (*exit) (void); 277 void (*resume) (void); 278 void (*suspend) (void); 279 void (*shutdown) (void); 280 281 struct list_head all_drivers; 282 283 struct tp_acpi_drv_struct *acpi; 284 285 struct { 286 u8 acpi_driver_registered:1; 287 u8 acpi_notify_installed:1; 288 u8 proc_created:1; 289 u8 init_called:1; 290 u8 experimental:1; 291 } flags; 292}; 293 294struct ibm_init_struct { 295 char param[32]; 296 297 int (*init) (struct ibm_init_struct *); 298 umode_t base_procfs_mode; 299 struct ibm_struct *data; 300}; 301 302static struct { 303 u32 bluetooth:1; 304 u32 hotkey:1; 305 u32 hotkey_mask:1; 306 u32 hotkey_wlsw:1; 307 enum { 308 TP_HOTKEY_TABLET_NONE = 0, 309 TP_HOTKEY_TABLET_USES_MHKG, 310 TP_HOTKEY_TABLET_USES_GMMS, 311 } hotkey_tablet; 312 u32 kbdlight:1; 313 u32 light:1; 314 u32 light_status:1; 315 u32 bright_acpimode:1; 316 u32 bright_unkfw:1; 317 u32 wan:1; 318 u32 uwb:1; 319 u32 fan_ctrl_status_undef:1; 320 u32 second_fan:1; 321 u32 second_fan_ctl:1; 322 u32 beep_needs_two_args:1; 323 u32 mixer_no_level_control:1; 324 u32 battery_force_primary:1; 325 u32 input_device_registered:1; 326 u32 platform_drv_registered:1; 327 u32 platform_drv_attrs_registered:1; 328 u32 sensors_pdrv_registered:1; 329 u32 sensors_pdrv_attrs_registered:1; 330 u32 sensors_pdev_attrs_registered:1; 331 u32 hotkey_poll_active:1; 332 u32 has_adaptive_kbd:1; 333} tp_features; 334 335static struct { 336 u16 hotkey_mask_ff:1; 337 u16 volume_ctrl_forbidden:1; 338} tp_warned; 339 340struct thinkpad_id_data { 341 unsigned int vendor; /* ThinkPad vendor: 342 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 343 344 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 345 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 346 347 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ 348 u32 ec_model; 349 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ 350 u16 ec_release; 351 352 char *model_str; /* ThinkPad T43 */ 353 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 354}; 355static struct thinkpad_id_data thinkpad_id; 356 357static enum { 358 TPACPI_LIFE_INIT = 0, 359 TPACPI_LIFE_RUNNING, 360 TPACPI_LIFE_EXITING, 361} tpacpi_lifecycle; 362 363static int experimental; 364static u32 dbg_level; 365 366static struct workqueue_struct *tpacpi_wq; 367 368enum led_status_t { 369 TPACPI_LED_OFF = 0, 370 TPACPI_LED_ON, 371 TPACPI_LED_BLINK, 372}; 373 374/* tpacpi LED class */ 375struct tpacpi_led_classdev { 376 struct led_classdev led_classdev; 377 int led; 378}; 379 380/* brightness level capabilities */ 381static unsigned int bright_maxlvl; /* 0 = unknown */ 382 383#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 384static int dbg_wlswemul; 385static bool tpacpi_wlsw_emulstate; 386static int dbg_bluetoothemul; 387static bool tpacpi_bluetooth_emulstate; 388static int dbg_wwanemul; 389static bool tpacpi_wwan_emulstate; 390static int dbg_uwbemul; 391static bool tpacpi_uwb_emulstate; 392#endif 393 394 395/************************************************************************* 396 * Debugging helpers 397 */ 398 399#define dbg_printk(a_dbg_level, format, arg...) \ 400do { \ 401 if (dbg_level & (a_dbg_level)) \ 402 printk(KERN_DEBUG pr_fmt("%s: " format), \ 403 __func__, ##arg); \ 404} while (0) 405 406#ifdef CONFIG_THINKPAD_ACPI_DEBUG 407#define vdbg_printk dbg_printk 408static const char *str_supported(int is_supported); 409#else 410static inline const char *str_supported(int is_supported) { return ""; } 411#define vdbg_printk(a_dbg_level, format, arg...) \ 412 do { if (0) no_printk(format, ##arg); } while (0) 413#endif 414 415static void tpacpi_log_usertask(const char * const what) 416{ 417 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 418 what, task_tgid_vnr(current)); 419} 420 421#define tpacpi_disclose_usertask(what, format, arg...) \ 422do { \ 423 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 424 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 425 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 426 what, task_tgid_vnr(current), ## arg); \ 427 } \ 428} while (0) 429 430/* 431 * Quirk handling helpers 432 * 433 * ThinkPad IDs and versions seen in the field so far are 434 * two or three characters from the set [0-9A-Z], i.e. base 36. 435 * 436 * We use values well outside that range as specials. 437 */ 438 439#define TPACPI_MATCH_ANY 0xffffffffU 440#define TPACPI_MATCH_ANY_VERSION 0xffffU 441#define TPACPI_MATCH_UNKNOWN 0U 442 443/* TPID('1', 'Y') == 0x3159 */ 444#define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) 445#define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) 446#define TPVER TPID 447 448#define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 449 { .vendor = PCI_VENDOR_ID_IBM, \ 450 .bios = TPID(__id1, __id2), \ 451 .ec = TPACPI_MATCH_ANY, \ 452 .quirks = (__quirk) } 453 454#define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 455 { .vendor = PCI_VENDOR_ID_LENOVO, \ 456 .bios = TPID(__id1, __id2), \ 457 .ec = TPACPI_MATCH_ANY, \ 458 .quirks = (__quirk) } 459 460#define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ 461 { .vendor = PCI_VENDOR_ID_LENOVO, \ 462 .bios = TPID3(__id1, __id2, __id3), \ 463 .ec = TPACPI_MATCH_ANY, \ 464 .quirks = (__quirk) } 465 466#define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ 467 { .vendor = PCI_VENDOR_ID_IBM, \ 468 .bios = TPACPI_MATCH_ANY, \ 469 .ec = TPID(__id1, __id2), \ 470 .quirks = (__quirk) } 471 472#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 473 { .vendor = PCI_VENDOR_ID_LENOVO, \ 474 .bios = TPACPI_MATCH_ANY, \ 475 .ec = TPID(__id1, __id2), \ 476 .quirks = (__quirk) } 477 478struct tpacpi_quirk { 479 unsigned int vendor; 480 u32 bios; 481 u32 ec; 482 unsigned long quirks; 483}; 484 485/** 486 * tpacpi_check_quirks() - search BIOS/EC version on a list 487 * @qlist: array of &struct tpacpi_quirk 488 * @qlist_size: number of elements in @qlist 489 * 490 * Iterates over a quirks list until one is found that matches the 491 * ThinkPad's vendor, BIOS and EC model. 492 * 493 * Returns 0 if nothing matches, otherwise returns the quirks field of 494 * the matching &struct tpacpi_quirk entry. 495 * 496 * The match criteria is: vendor, ec and bios much match. 497 */ 498static unsigned long __init tpacpi_check_quirks( 499 const struct tpacpi_quirk *qlist, 500 unsigned int qlist_size) 501{ 502 while (qlist_size) { 503 if ((qlist->vendor == thinkpad_id.vendor || 504 qlist->vendor == TPACPI_MATCH_ANY) && 505 (qlist->bios == thinkpad_id.bios_model || 506 qlist->bios == TPACPI_MATCH_ANY) && 507 (qlist->ec == thinkpad_id.ec_model || 508 qlist->ec == TPACPI_MATCH_ANY)) 509 return qlist->quirks; 510 511 qlist_size--; 512 qlist++; 513 } 514 return 0; 515} 516 517static inline bool __pure __init tpacpi_is_lenovo(void) 518{ 519 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 520} 521 522static inline bool __pure __init tpacpi_is_ibm(void) 523{ 524 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 525} 526 527/**************************************************************************** 528 **************************************************************************** 529 * 530 * ACPI Helpers and device model 531 * 532 **************************************************************************** 533 ****************************************************************************/ 534 535/************************************************************************* 536 * ACPI basic handles 537 */ 538 539static acpi_handle root_handle; 540static acpi_handle ec_handle; 541 542#define TPACPI_HANDLE(object, parent, paths...) \ 543 static acpi_handle object##_handle; \ 544 static const acpi_handle * const object##_parent __initconst = \ 545 &parent##_handle; \ 546 static char *object##_paths[] __initdata = { paths } 547 548TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 549TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 550 551TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 552 /* T4x, X31, X40 */ 553 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 554 "\\CMS", /* R40, R40e */ 555 ); /* all others */ 556 557TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 558 "^HKEY", /* R30, R31 */ 559 "HKEY", /* all others */ 560 ); /* 570 */ 561 562/************************************************************************* 563 * ACPI helpers 564 */ 565 566static int acpi_evalf(acpi_handle handle, 567 int *res, char *method, char *fmt, ...) 568{ 569 char *fmt0 = fmt; 570 struct acpi_object_list params; 571 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 572 struct acpi_buffer result, *resultp; 573 union acpi_object out_obj; 574 acpi_status status; 575 va_list ap; 576 char res_type; 577 int success; 578 int quiet; 579 580 if (!*fmt) { 581 pr_err("acpi_evalf() called with empty format\n"); 582 return 0; 583 } 584 585 if (*fmt == 'q') { 586 quiet = 1; 587 fmt++; 588 } else 589 quiet = 0; 590 591 res_type = *(fmt++); 592 593 params.count = 0; 594 params.pointer = &in_objs[0]; 595 596 va_start(ap, fmt); 597 while (*fmt) { 598 char c = *(fmt++); 599 switch (c) { 600 case 'd': /* int */ 601 in_objs[params.count].integer.value = va_arg(ap, int); 602 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 603 break; 604 /* add more types as needed */ 605 default: 606 pr_err("acpi_evalf() called with invalid format character '%c'\n", 607 c); 608 va_end(ap); 609 return 0; 610 } 611 } 612 va_end(ap); 613 614 if (res_type != 'v') { 615 result.length = sizeof(out_obj); 616 result.pointer = &out_obj; 617 resultp = &result; 618 } else 619 resultp = NULL; 620 621 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 622 623 switch (res_type) { 624 case 'd': /* int */ 625 success = (status == AE_OK && 626 out_obj.type == ACPI_TYPE_INTEGER); 627 if (success && res) 628 *res = out_obj.integer.value; 629 break; 630 case 'v': /* void */ 631 success = status == AE_OK; 632 break; 633 /* add more types as needed */ 634 default: 635 pr_err("acpi_evalf() called with invalid format character '%c'\n", 636 res_type); 637 return 0; 638 } 639 640 if (!success && !quiet) 641 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 642 method, fmt0, acpi_format_exception(status)); 643 644 return success; 645} 646 647static int acpi_ec_read(int i, u8 *p) 648{ 649 int v; 650 651 if (ecrd_handle) { 652 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 653 return 0; 654 *p = v; 655 } else { 656 if (ec_read(i, p) < 0) 657 return 0; 658 } 659 660 return 1; 661} 662 663static int acpi_ec_write(int i, u8 v) 664{ 665 if (ecwr_handle) { 666 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 667 return 0; 668 } else { 669 if (ec_write(i, v) < 0) 670 return 0; 671 } 672 673 return 1; 674} 675 676static int issue_thinkpad_cmos_command(int cmos_cmd) 677{ 678 if (!cmos_handle) 679 return -ENXIO; 680 681 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 682 return -EIO; 683 684 return 0; 685} 686 687/************************************************************************* 688 * ACPI device model 689 */ 690 691#define TPACPI_ACPIHANDLE_INIT(object) \ 692 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 693 object##_paths, ARRAY_SIZE(object##_paths)) 694 695static void __init drv_acpi_handle_init(const char *name, 696 acpi_handle *handle, const acpi_handle parent, 697 char **paths, const int num_paths) 698{ 699 int i; 700 acpi_status status; 701 702 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 703 name); 704 705 for (i = 0; i < num_paths; i++) { 706 status = acpi_get_handle(parent, paths[i], handle); 707 if (ACPI_SUCCESS(status)) { 708 dbg_printk(TPACPI_DBG_INIT, 709 "Found ACPI handle %s for %s\n", 710 paths[i], name); 711 return; 712 } 713 } 714 715 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 716 name); 717 *handle = NULL; 718} 719 720static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 721 u32 level, void *context, void **return_value) 722{ 723 struct acpi_device *dev; 724 if (!strcmp(context, "video")) { 725 if (acpi_bus_get_device(handle, &dev)) 726 return AE_OK; 727 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 728 return AE_OK; 729 } 730 731 *(acpi_handle *)return_value = handle; 732 733 return AE_CTRL_TERMINATE; 734} 735 736static void __init tpacpi_acpi_handle_locate(const char *name, 737 const char *hid, 738 acpi_handle *handle) 739{ 740 acpi_status status; 741 acpi_handle device_found; 742 743 BUG_ON(!name || !handle); 744 vdbg_printk(TPACPI_DBG_INIT, 745 "trying to locate ACPI handle for %s, using HID %s\n", 746 name, hid ? hid : "NULL"); 747 748 memset(&device_found, 0, sizeof(device_found)); 749 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 750 (void *)name, &device_found); 751 752 *handle = NULL; 753 754 if (ACPI_SUCCESS(status)) { 755 *handle = device_found; 756 dbg_printk(TPACPI_DBG_INIT, 757 "Found ACPI handle for %s\n", name); 758 } else { 759 vdbg_printk(TPACPI_DBG_INIT, 760 "Could not locate an ACPI handle for %s: %s\n", 761 name, acpi_format_exception(status)); 762 } 763} 764 765static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 766{ 767 struct ibm_struct *ibm = data; 768 769 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 770 return; 771 772 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 773 return; 774 775 ibm->acpi->notify(ibm, event); 776} 777 778static int __init setup_acpi_notify(struct ibm_struct *ibm) 779{ 780 acpi_status status; 781 int rc; 782 783 BUG_ON(!ibm->acpi); 784 785 if (!*ibm->acpi->handle) 786 return 0; 787 788 vdbg_printk(TPACPI_DBG_INIT, 789 "setting up ACPI notify for %s\n", ibm->name); 790 791 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); 792 if (rc < 0) { 793 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc); 794 return -ENODEV; 795 } 796 797 ibm->acpi->device->driver_data = ibm; 798 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 799 TPACPI_ACPI_EVENT_PREFIX, 800 ibm->name); 801 802 status = acpi_install_notify_handler(*ibm->acpi->handle, 803 ibm->acpi->type, dispatch_acpi_notify, ibm); 804 if (ACPI_FAILURE(status)) { 805 if (status == AE_ALREADY_EXISTS) { 806 pr_notice("another device driver is already handling %s events\n", 807 ibm->name); 808 } else { 809 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 810 ibm->name, acpi_format_exception(status)); 811 } 812 return -ENODEV; 813 } 814 ibm->flags.acpi_notify_installed = 1; 815 return 0; 816} 817 818static int __init tpacpi_device_add(struct acpi_device *device) 819{ 820 return 0; 821} 822 823static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 824{ 825 int rc; 826 827 dbg_printk(TPACPI_DBG_INIT, 828 "registering %s as an ACPI driver\n", ibm->name); 829 830 BUG_ON(!ibm->acpi); 831 832 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 833 if (!ibm->acpi->driver) { 834 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 835 return -ENOMEM; 836 } 837 838 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 839 ibm->acpi->driver->ids = ibm->acpi->hid; 840 841 ibm->acpi->driver->ops.add = &tpacpi_device_add; 842 843 rc = acpi_bus_register_driver(ibm->acpi->driver); 844 if (rc < 0) { 845 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 846 ibm->name, rc); 847 kfree(ibm->acpi->driver); 848 ibm->acpi->driver = NULL; 849 } else if (!rc) 850 ibm->flags.acpi_driver_registered = 1; 851 852 return rc; 853} 854 855 856/**************************************************************************** 857 **************************************************************************** 858 * 859 * Procfs Helpers 860 * 861 **************************************************************************** 862 ****************************************************************************/ 863 864static int dispatch_proc_show(struct seq_file *m, void *v) 865{ 866 struct ibm_struct *ibm = m->private; 867 868 if (!ibm || !ibm->read) 869 return -EINVAL; 870 return ibm->read(m); 871} 872 873static int dispatch_proc_open(struct inode *inode, struct file *file) 874{ 875 return single_open(file, dispatch_proc_show, PDE_DATA(inode)); 876} 877 878static ssize_t dispatch_proc_write(struct file *file, 879 const char __user *userbuf, 880 size_t count, loff_t *pos) 881{ 882 struct ibm_struct *ibm = PDE_DATA(file_inode(file)); 883 char *kernbuf; 884 int ret; 885 886 if (!ibm || !ibm->write) 887 return -EINVAL; 888 if (count > PAGE_SIZE - 1) 889 return -EINVAL; 890 891 kernbuf = kmalloc(count + 1, GFP_KERNEL); 892 if (!kernbuf) 893 return -ENOMEM; 894 895 if (copy_from_user(kernbuf, userbuf, count)) { 896 kfree(kernbuf); 897 return -EFAULT; 898 } 899 900 kernbuf[count] = 0; 901 ret = ibm->write(kernbuf); 902 if (ret == 0) 903 ret = count; 904 905 kfree(kernbuf); 906 907 return ret; 908} 909 910static const struct proc_ops dispatch_proc_ops = { 911 .proc_open = dispatch_proc_open, 912 .proc_read = seq_read, 913 .proc_lseek = seq_lseek, 914 .proc_release = single_release, 915 .proc_write = dispatch_proc_write, 916}; 917 918/**************************************************************************** 919 **************************************************************************** 920 * 921 * Device model: input, hwmon and platform 922 * 923 **************************************************************************** 924 ****************************************************************************/ 925 926static struct platform_device *tpacpi_pdev; 927static struct platform_device *tpacpi_sensors_pdev; 928static struct device *tpacpi_hwmon; 929static struct input_dev *tpacpi_inputdev; 930static struct mutex tpacpi_inputdev_send_mutex; 931static LIST_HEAD(tpacpi_all_drivers); 932 933#ifdef CONFIG_PM_SLEEP 934static int tpacpi_suspend_handler(struct device *dev) 935{ 936 struct ibm_struct *ibm, *itmp; 937 938 list_for_each_entry_safe(ibm, itmp, 939 &tpacpi_all_drivers, 940 all_drivers) { 941 if (ibm->suspend) 942 (ibm->suspend)(); 943 } 944 945 return 0; 946} 947 948static int tpacpi_resume_handler(struct device *dev) 949{ 950 struct ibm_struct *ibm, *itmp; 951 952 list_for_each_entry_safe(ibm, itmp, 953 &tpacpi_all_drivers, 954 all_drivers) { 955 if (ibm->resume) 956 (ibm->resume)(); 957 } 958 959 return 0; 960} 961#endif 962 963static SIMPLE_DEV_PM_OPS(tpacpi_pm, 964 tpacpi_suspend_handler, tpacpi_resume_handler); 965 966static void tpacpi_shutdown_handler(struct platform_device *pdev) 967{ 968 struct ibm_struct *ibm, *itmp; 969 970 list_for_each_entry_safe(ibm, itmp, 971 &tpacpi_all_drivers, 972 all_drivers) { 973 if (ibm->shutdown) 974 (ibm->shutdown)(); 975 } 976} 977 978static struct platform_driver tpacpi_pdriver = { 979 .driver = { 980 .name = TPACPI_DRVR_NAME, 981 .pm = &tpacpi_pm, 982 }, 983 .shutdown = tpacpi_shutdown_handler, 984}; 985 986static struct platform_driver tpacpi_hwmon_pdriver = { 987 .driver = { 988 .name = TPACPI_HWMON_DRVR_NAME, 989 }, 990}; 991 992/************************************************************************* 993 * sysfs support helpers 994 */ 995 996struct attribute_set { 997 unsigned int members, max_members; 998 struct attribute_group group; 999}; 1000 1001struct attribute_set_obj { 1002 struct attribute_set s; 1003 struct attribute *a; 1004} __attribute__((packed)); 1005 1006static struct attribute_set *create_attr_set(unsigned int max_members, 1007 const char *name) 1008{ 1009 struct attribute_set_obj *sobj; 1010 1011 if (max_members == 0) 1012 return NULL; 1013 1014 /* Allocates space for implicit NULL at the end too */ 1015 sobj = kzalloc(sizeof(struct attribute_set_obj) + 1016 max_members * sizeof(struct attribute *), 1017 GFP_KERNEL); 1018 if (!sobj) 1019 return NULL; 1020 sobj->s.max_members = max_members; 1021 sobj->s.group.attrs = &sobj->a; 1022 sobj->s.group.name = name; 1023 1024 return &sobj->s; 1025} 1026 1027#define destroy_attr_set(_set) \ 1028 kfree(_set); 1029 1030/* not multi-threaded safe, use it in a single thread per set */ 1031static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) 1032{ 1033 if (!s || !attr) 1034 return -EINVAL; 1035 1036 if (s->members >= s->max_members) 1037 return -ENOMEM; 1038 1039 s->group.attrs[s->members] = attr; 1040 s->members++; 1041 1042 return 0; 1043} 1044 1045static int add_many_to_attr_set(struct attribute_set *s, 1046 struct attribute **attr, 1047 unsigned int count) 1048{ 1049 int i, res; 1050 1051 for (i = 0; i < count; i++) { 1052 res = add_to_attr_set(s, attr[i]); 1053 if (res) 1054 return res; 1055 } 1056 1057 return 0; 1058} 1059 1060static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) 1061{ 1062 sysfs_remove_group(kobj, &s->group); 1063 destroy_attr_set(s); 1064} 1065 1066#define register_attr_set_with_sysfs(_attr_set, _kobj) \ 1067 sysfs_create_group(_kobj, &_attr_set->group) 1068 1069static int parse_strtoul(const char *buf, 1070 unsigned long max, unsigned long *value) 1071{ 1072 char *endp; 1073 1074 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1075 endp = skip_spaces(endp); 1076 if (*endp || *value > max) 1077 return -EINVAL; 1078 1079 return 0; 1080} 1081 1082static void tpacpi_disable_brightness_delay(void) 1083{ 1084 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1085 pr_notice("ACPI backlight control delay disabled\n"); 1086} 1087 1088static void printk_deprecated_attribute(const char * const what, 1089 const char * const details) 1090{ 1091 tpacpi_log_usertask("deprecated sysfs attribute"); 1092 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", 1093 what, details); 1094} 1095 1096/************************************************************************* 1097 * rfkill and radio control support helpers 1098 */ 1099 1100/* 1101 * ThinkPad-ACPI firmware handling model: 1102 * 1103 * WLSW (master wireless switch) is event-driven, and is common to all 1104 * firmware-controlled radios. It cannot be controlled, just monitored, 1105 * as expected. It overrides all radio state in firmware 1106 * 1107 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1108 * (TODO: verify how WLSW interacts with the returned radio state). 1109 * 1110 * The only time there are shadow radio state changes, is when 1111 * masked-off hotkeys are used. 1112 */ 1113 1114/* 1115 * Internal driver API for radio state: 1116 * 1117 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1118 * bool: true means radio blocked (off) 1119 */ 1120enum tpacpi_rfkill_state { 1121 TPACPI_RFK_RADIO_OFF = 0, 1122 TPACPI_RFK_RADIO_ON 1123}; 1124 1125/* rfkill switches */ 1126enum tpacpi_rfk_id { 1127 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1128 TPACPI_RFK_WWAN_SW_ID, 1129 TPACPI_RFK_UWB_SW_ID, 1130 TPACPI_RFK_SW_MAX 1131}; 1132 1133static const char *tpacpi_rfkill_names[] = { 1134 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1135 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1136 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1137 [TPACPI_RFK_SW_MAX] = NULL 1138}; 1139 1140/* ThinkPad-ACPI rfkill subdriver */ 1141struct tpacpi_rfk { 1142 struct rfkill *rfkill; 1143 enum tpacpi_rfk_id id; 1144 const struct tpacpi_rfk_ops *ops; 1145}; 1146 1147struct tpacpi_rfk_ops { 1148 /* firmware interface */ 1149 int (*get_status)(void); 1150 int (*set_status)(const enum tpacpi_rfkill_state); 1151}; 1152 1153static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1154 1155/* Query FW and update rfkill sw state for a given rfkill switch */ 1156static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1157{ 1158 int status; 1159 1160 if (!tp_rfk) 1161 return -ENODEV; 1162 1163 status = (tp_rfk->ops->get_status)(); 1164 if (status < 0) 1165 return status; 1166 1167 rfkill_set_sw_state(tp_rfk->rfkill, 1168 (status == TPACPI_RFK_RADIO_OFF)); 1169 1170 return status; 1171} 1172 1173/* 1174 * Sync the HW-blocking state of all rfkill switches, 1175 * do notice it causes the rfkill core to schedule uevents 1176 */ 1177static void tpacpi_rfk_update_hwblock_state(bool blocked) 1178{ 1179 unsigned int i; 1180 struct tpacpi_rfk *tp_rfk; 1181 1182 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1183 tp_rfk = tpacpi_rfkill_switches[i]; 1184 if (tp_rfk) { 1185 if (rfkill_set_hw_state(tp_rfk->rfkill, 1186 blocked)) { 1187 /* ignore -- we track sw block */ 1188 } 1189 } 1190 } 1191} 1192 1193/* Call to get the WLSW state from the firmware */ 1194static int hotkey_get_wlsw(void); 1195 1196/* Call to query WLSW state and update all rfkill switches */ 1197static bool tpacpi_rfk_check_hwblock_state(void) 1198{ 1199 int res = hotkey_get_wlsw(); 1200 int hw_blocked; 1201 1202 /* When unknown or unsupported, we have to assume it is unblocked */ 1203 if (res < 0) 1204 return false; 1205 1206 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1207 tpacpi_rfk_update_hwblock_state(hw_blocked); 1208 1209 return hw_blocked; 1210} 1211 1212static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1213{ 1214 struct tpacpi_rfk *tp_rfk = data; 1215 int res; 1216 1217 dbg_printk(TPACPI_DBG_RFKILL, 1218 "request to change radio state to %s\n", 1219 blocked ? "blocked" : "unblocked"); 1220 1221 /* try to set radio state */ 1222 res = (tp_rfk->ops->set_status)(blocked ? 1223 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1224 1225 /* and update the rfkill core with whatever the FW really did */ 1226 tpacpi_rfk_update_swstate(tp_rfk); 1227 1228 return (res < 0) ? res : 0; 1229} 1230 1231static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1232 .set_block = tpacpi_rfk_hook_set_block, 1233}; 1234 1235static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1236 const struct tpacpi_rfk_ops *tp_rfkops, 1237 const enum rfkill_type rfktype, 1238 const char *name, 1239 const bool set_default) 1240{ 1241 struct tpacpi_rfk *atp_rfk; 1242 int res; 1243 bool sw_state = false; 1244 bool hw_state; 1245 int sw_status; 1246 1247 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1248 1249 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1250 if (atp_rfk) 1251 atp_rfk->rfkill = rfkill_alloc(name, 1252 &tpacpi_pdev->dev, 1253 rfktype, 1254 &tpacpi_rfk_rfkill_ops, 1255 atp_rfk); 1256 if (!atp_rfk || !atp_rfk->rfkill) { 1257 pr_err("failed to allocate memory for rfkill class\n"); 1258 kfree(atp_rfk); 1259 return -ENOMEM; 1260 } 1261 1262 atp_rfk->id = id; 1263 atp_rfk->ops = tp_rfkops; 1264 1265 sw_status = (tp_rfkops->get_status)(); 1266 if (sw_status < 0) { 1267 pr_err("failed to read initial state for %s, error %d\n", 1268 name, sw_status); 1269 } else { 1270 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1271 if (set_default) { 1272 /* try to keep the initial state, since we ask the 1273 * firmware to preserve it across S5 in NVRAM */ 1274 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1275 } 1276 } 1277 hw_state = tpacpi_rfk_check_hwblock_state(); 1278 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1279 1280 res = rfkill_register(atp_rfk->rfkill); 1281 if (res < 0) { 1282 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1283 rfkill_destroy(atp_rfk->rfkill); 1284 kfree(atp_rfk); 1285 return res; 1286 } 1287 1288 tpacpi_rfkill_switches[id] = atp_rfk; 1289 1290 pr_info("rfkill switch %s: radio is %sblocked\n", 1291 name, (sw_state || hw_state) ? "" : "un"); 1292 return 0; 1293} 1294 1295static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1296{ 1297 struct tpacpi_rfk *tp_rfk; 1298 1299 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1300 1301 tp_rfk = tpacpi_rfkill_switches[id]; 1302 if (tp_rfk) { 1303 rfkill_unregister(tp_rfk->rfkill); 1304 rfkill_destroy(tp_rfk->rfkill); 1305 tpacpi_rfkill_switches[id] = NULL; 1306 kfree(tp_rfk); 1307 } 1308} 1309 1310static void printk_deprecated_rfkill_attribute(const char * const what) 1311{ 1312 printk_deprecated_attribute(what, 1313 "Please switch to generic rfkill before year 2010"); 1314} 1315 1316/* sysfs <radio> enable ------------------------------------------------ */ 1317static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1318 struct device_attribute *attr, 1319 char *buf) 1320{ 1321 int status; 1322 1323 printk_deprecated_rfkill_attribute(attr->attr.name); 1324 1325 /* This is in the ABI... */ 1326 if (tpacpi_rfk_check_hwblock_state()) { 1327 status = TPACPI_RFK_RADIO_OFF; 1328 } else { 1329 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1330 if (status < 0) 1331 return status; 1332 } 1333 1334 return snprintf(buf, PAGE_SIZE, "%d\n", 1335 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1336} 1337 1338static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1339 struct device_attribute *attr, 1340 const char *buf, size_t count) 1341{ 1342 unsigned long t; 1343 int res; 1344 1345 printk_deprecated_rfkill_attribute(attr->attr.name); 1346 1347 if (parse_strtoul(buf, 1, &t)) 1348 return -EINVAL; 1349 1350 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1351 1352 /* This is in the ABI... */ 1353 if (tpacpi_rfk_check_hwblock_state() && !!t) 1354 return -EPERM; 1355 1356 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1357 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1358 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1359 1360 return (res < 0) ? res : count; 1361} 1362 1363/* procfs -------------------------------------------------------------- */ 1364static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1365{ 1366 if (id >= TPACPI_RFK_SW_MAX) 1367 seq_printf(m, "status:\t\tnot supported\n"); 1368 else { 1369 int status; 1370 1371 /* This is in the ABI... */ 1372 if (tpacpi_rfk_check_hwblock_state()) { 1373 status = TPACPI_RFK_RADIO_OFF; 1374 } else { 1375 status = tpacpi_rfk_update_swstate( 1376 tpacpi_rfkill_switches[id]); 1377 if (status < 0) 1378 return status; 1379 } 1380 1381 seq_printf(m, "status:\t\t%s\n", 1382 (status == TPACPI_RFK_RADIO_ON) ? 1383 "enabled" : "disabled"); 1384 seq_printf(m, "commands:\tenable, disable\n"); 1385 } 1386 1387 return 0; 1388} 1389 1390static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1391{ 1392 char *cmd; 1393 int status = -1; 1394 int res = 0; 1395 1396 if (id >= TPACPI_RFK_SW_MAX) 1397 return -ENODEV; 1398 1399 while ((cmd = strsep(&buf, ","))) { 1400 if (strlencmp(cmd, "enable") == 0) 1401 status = TPACPI_RFK_RADIO_ON; 1402 else if (strlencmp(cmd, "disable") == 0) 1403 status = TPACPI_RFK_RADIO_OFF; 1404 else 1405 return -EINVAL; 1406 } 1407 1408 if (status != -1) { 1409 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1410 (status == TPACPI_RFK_RADIO_ON) ? 1411 "enable" : "disable", 1412 tpacpi_rfkill_names[id]); 1413 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1414 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1415 } 1416 1417 return res; 1418} 1419 1420/************************************************************************* 1421 * thinkpad-acpi driver attributes 1422 */ 1423 1424/* interface_version --------------------------------------------------- */ 1425static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1426{ 1427 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); 1428} 1429static DRIVER_ATTR_RO(interface_version); 1430 1431/* debug_level --------------------------------------------------------- */ 1432static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1433{ 1434 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); 1435} 1436 1437static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1438 size_t count) 1439{ 1440 unsigned long t; 1441 1442 if (parse_strtoul(buf, 0xffff, &t)) 1443 return -EINVAL; 1444 1445 dbg_level = t; 1446 1447 return count; 1448} 1449static DRIVER_ATTR_RW(debug_level); 1450 1451/* version ------------------------------------------------------------- */ 1452static ssize_t version_show(struct device_driver *drv, char *buf) 1453{ 1454 return snprintf(buf, PAGE_SIZE, "%s v%s\n", 1455 TPACPI_DESC, TPACPI_VERSION); 1456} 1457static DRIVER_ATTR_RO(version); 1458 1459/* --------------------------------------------------------------------- */ 1460 1461#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1462 1463/* wlsw_emulstate ------------------------------------------------------ */ 1464static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1465{ 1466 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate); 1467} 1468 1469static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1470 size_t count) 1471{ 1472 unsigned long t; 1473 1474 if (parse_strtoul(buf, 1, &t)) 1475 return -EINVAL; 1476 1477 if (tpacpi_wlsw_emulstate != !!t) { 1478 tpacpi_wlsw_emulstate = !!t; 1479 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1480 } 1481 1482 return count; 1483} 1484static DRIVER_ATTR_RW(wlsw_emulstate); 1485 1486/* bluetooth_emulstate ------------------------------------------------- */ 1487static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1488{ 1489 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate); 1490} 1491 1492static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1493 const char *buf, size_t count) 1494{ 1495 unsigned long t; 1496 1497 if (parse_strtoul(buf, 1, &t)) 1498 return -EINVAL; 1499 1500 tpacpi_bluetooth_emulstate = !!t; 1501 1502 return count; 1503} 1504static DRIVER_ATTR_RW(bluetooth_emulstate); 1505 1506/* wwan_emulstate ------------------------------------------------- */ 1507static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1508{ 1509 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate); 1510} 1511 1512static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1513 size_t count) 1514{ 1515 unsigned long t; 1516 1517 if (parse_strtoul(buf, 1, &t)) 1518 return -EINVAL; 1519 1520 tpacpi_wwan_emulstate = !!t; 1521 1522 return count; 1523} 1524static DRIVER_ATTR_RW(wwan_emulstate); 1525 1526/* uwb_emulstate ------------------------------------------------- */ 1527static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1528{ 1529 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate); 1530} 1531 1532static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1533 size_t count) 1534{ 1535 unsigned long t; 1536 1537 if (parse_strtoul(buf, 1, &t)) 1538 return -EINVAL; 1539 1540 tpacpi_uwb_emulstate = !!t; 1541 1542 return count; 1543} 1544static DRIVER_ATTR_RW(uwb_emulstate); 1545#endif 1546 1547/* --------------------------------------------------------------------- */ 1548 1549static struct driver_attribute *tpacpi_driver_attributes[] = { 1550 &driver_attr_debug_level, &driver_attr_version, 1551 &driver_attr_interface_version, 1552}; 1553 1554static int __init tpacpi_create_driver_attributes(struct device_driver *drv) 1555{ 1556 int i, res; 1557 1558 i = 0; 1559 res = 0; 1560 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { 1561 res = driver_create_file(drv, tpacpi_driver_attributes[i]); 1562 i++; 1563 } 1564 1565#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1566 if (!res && dbg_wlswemul) 1567 res = driver_create_file(drv, &driver_attr_wlsw_emulstate); 1568 if (!res && dbg_bluetoothemul) 1569 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); 1570 if (!res && dbg_wwanemul) 1571 res = driver_create_file(drv, &driver_attr_wwan_emulstate); 1572 if (!res && dbg_uwbemul) 1573 res = driver_create_file(drv, &driver_attr_uwb_emulstate); 1574#endif 1575 1576 return res; 1577} 1578 1579static void tpacpi_remove_driver_attributes(struct device_driver *drv) 1580{ 1581 int i; 1582 1583 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) 1584 driver_remove_file(drv, tpacpi_driver_attributes[i]); 1585 1586#ifdef THINKPAD_ACPI_DEBUGFACILITIES 1587 driver_remove_file(drv, &driver_attr_wlsw_emulstate); 1588 driver_remove_file(drv, &driver_attr_bluetooth_emulstate); 1589 driver_remove_file(drv, &driver_attr_wwan_emulstate); 1590 driver_remove_file(drv, &driver_attr_uwb_emulstate); 1591#endif 1592} 1593 1594/************************************************************************* 1595 * Firmware Data 1596 */ 1597 1598/* 1599 * Table of recommended minimum BIOS versions 1600 * 1601 * Reasons for listing: 1602 * 1. Stable BIOS, listed because the unknown amount of 1603 * bugs and bad ACPI behaviour on older versions 1604 * 1605 * 2. BIOS or EC fw with known bugs that trigger on Linux 1606 * 1607 * 3. BIOS with known reduced functionality in older versions 1608 * 1609 * We recommend the latest BIOS and EC version. 1610 * We only support the latest BIOS and EC fw version as a rule. 1611 * 1612 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1613 * Information from users in ThinkWiki 1614 * 1615 * WARNING: we use this table also to detect that the machine is 1616 * a ThinkPad in some cases, so don't remove entries lightly. 1617 */ 1618 1619#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1620 { .vendor = (__v), \ 1621 .bios = TPID(__id1, __id2), \ 1622 .ec = TPACPI_MATCH_ANY, \ 1623 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ 1624 | TPVER(__bv1, __bv2) } 1625 1626#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1627 __eid, __ev1, __ev2) \ 1628 { .vendor = (__v), \ 1629 .bios = TPID(__bid1, __bid2), \ 1630 .ec = __eid, \ 1631 .quirks = TPVER(__ev1, __ev2) << 16 \ 1632 | TPVER(__bv1, __bv2) } 1633 1634#define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1635 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1636 1637/* Outdated IBM BIOSes often lack the EC id string */ 1638#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1639 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1640 __bv1, __bv2, TPID(__id1, __id2), \ 1641 __ev1, __ev2), \ 1642 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1643 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1644 __ev1, __ev2) 1645 1646/* Outdated IBM BIOSes often lack the EC id string */ 1647#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1648 __eid1, __eid2, __ev1, __ev2) \ 1649 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1650 __bv1, __bv2, TPID(__eid1, __eid2), \ 1651 __ev1, __ev2), \ 1652 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1653 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1654 __ev1, __ev2) 1655 1656#define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1657 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1658 1659#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1660 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1661 __bv1, __bv2, TPID(__id1, __id2), \ 1662 __ev1, __ev2) 1663 1664#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1665 __eid1, __eid2, __ev1, __ev2) \ 1666 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1667 __bv1, __bv2, TPID(__eid1, __eid2), \ 1668 __ev1, __ev2) 1669 1670static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1671 /* Numeric models ------------------ */ 1672 /* FW MODEL BIOS VERS */ 1673 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1674 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1675 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1676 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1677 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1678 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1679 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1680 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1681 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1682 1683 /* A-series ------------------------- */ 1684 /* FW MODEL BIOS VERS EC VERS */ 1685 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1686 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1687 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1688 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1689 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1690 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1691 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1692 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1693 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1694 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1695 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1696 1697 /* G-series ------------------------- */ 1698 /* FW MODEL BIOS VERS */ 1699 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1700 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1701 1702 /* R-series, T-series --------------- */ 1703 /* FW MODEL BIOS VERS EC VERS */ 1704 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1705 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1706 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1707 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1708 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1709 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1710 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1711 T40/p, T41/p, T42/p (1) */ 1712 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1713 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1714 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1715 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1716 1717 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1718 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1719 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1720 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1721 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1722 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1723 1724 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1725 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1726 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1727 1728 /* BIOS FW BIOS VERS EC FW EC VERS */ 1729 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1730 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1731 1732 /* X-series ------------------------- */ 1733 /* FW MODEL BIOS VERS EC VERS */ 1734 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1735 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1736 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1737 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1738 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1739 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1740 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1741 1742 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1743 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1744 1745 /* (0) - older versions lack DMI EC fw string and functionality */ 1746 /* (1) - older versions known to lack functionality */ 1747}; 1748 1749#undef TPV_QL1 1750#undef TPV_QL0 1751#undef TPV_QI2 1752#undef TPV_QI1 1753#undef TPV_QI0 1754#undef TPV_Q_X 1755#undef TPV_Q 1756 1757static void __init tpacpi_check_outdated_fw(void) 1758{ 1759 unsigned long fwvers; 1760 u16 ec_version, bios_version; 1761 1762 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1763 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1764 1765 if (!fwvers) 1766 return; 1767 1768 bios_version = fwvers & 0xffffU; 1769 ec_version = (fwvers >> 16) & 0xffffU; 1770 1771 /* note that unknown versions are set to 0x0000 and we use that */ 1772 if ((bios_version > thinkpad_id.bios_release) || 1773 (ec_version > thinkpad_id.ec_release && 1774 ec_version != TPACPI_MATCH_ANY_VERSION)) { 1775 /* 1776 * The changelogs would let us track down the exact 1777 * reason, but it is just too much of a pain to track 1778 * it. We only list BIOSes that are either really 1779 * broken, or really stable to begin with, so it is 1780 * best if the user upgrades the firmware anyway. 1781 */ 1782 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1783 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1784 } 1785} 1786 1787static bool __init tpacpi_is_fw_known(void) 1788{ 1789 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1790 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1791} 1792 1793/**************************************************************************** 1794 **************************************************************************** 1795 * 1796 * Subdrivers 1797 * 1798 **************************************************************************** 1799 ****************************************************************************/ 1800 1801/************************************************************************* 1802 * thinkpad-acpi metadata subdriver 1803 */ 1804 1805static int thinkpad_acpi_driver_read(struct seq_file *m) 1806{ 1807 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1808 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1809 return 0; 1810} 1811 1812static struct ibm_struct thinkpad_acpi_driver_data = { 1813 .name = "driver", 1814 .read = thinkpad_acpi_driver_read, 1815}; 1816 1817/************************************************************************* 1818 * Hotkey subdriver 1819 */ 1820 1821/* 1822 * ThinkPad firmware event model 1823 * 1824 * The ThinkPad firmware has two main event interfaces: normal ACPI 1825 * notifications (which follow the ACPI standard), and a private event 1826 * interface. 1827 * 1828 * The private event interface also issues events for the hotkeys. As 1829 * the driver gained features, the event handling code ended up being 1830 * built around the hotkey subdriver. This will need to be refactored 1831 * to a more formal event API eventually. 1832 * 1833 * Some "hotkeys" are actually supposed to be used as event reports, 1834 * such as "brightness has changed", "volume has changed", depending on 1835 * the ThinkPad model and how the firmware is operating. 1836 * 1837 * Unlike other classes, hotkey-class events have mask/unmask control on 1838 * non-ancient firmware. However, how it behaves changes a lot with the 1839 * firmware model and version. 1840 */ 1841 1842enum { /* hot key scan codes (derived from ACPI DSDT) */ 1843 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1844 TP_ACPI_HOTKEYSCAN_FNF2, 1845 TP_ACPI_HOTKEYSCAN_FNF3, 1846 TP_ACPI_HOTKEYSCAN_FNF4, 1847 TP_ACPI_HOTKEYSCAN_FNF5, 1848 TP_ACPI_HOTKEYSCAN_FNF6, 1849 TP_ACPI_HOTKEYSCAN_FNF7, 1850 TP_ACPI_HOTKEYSCAN_FNF8, 1851 TP_ACPI_HOTKEYSCAN_FNF9, 1852 TP_ACPI_HOTKEYSCAN_FNF10, 1853 TP_ACPI_HOTKEYSCAN_FNF11, 1854 TP_ACPI_HOTKEYSCAN_FNF12, 1855 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1856 TP_ACPI_HOTKEYSCAN_FNINSERT, 1857 TP_ACPI_HOTKEYSCAN_FNDELETE, 1858 TP_ACPI_HOTKEYSCAN_FNHOME, 1859 TP_ACPI_HOTKEYSCAN_FNEND, 1860 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1861 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1862 TP_ACPI_HOTKEYSCAN_FNSPACE, 1863 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1864 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1865 TP_ACPI_HOTKEYSCAN_MUTE, 1866 TP_ACPI_HOTKEYSCAN_THINKPAD, 1867 TP_ACPI_HOTKEYSCAN_UNK1, 1868 TP_ACPI_HOTKEYSCAN_UNK2, 1869 TP_ACPI_HOTKEYSCAN_UNK3, 1870 TP_ACPI_HOTKEYSCAN_UNK4, 1871 TP_ACPI_HOTKEYSCAN_UNK5, 1872 TP_ACPI_HOTKEYSCAN_UNK6, 1873 TP_ACPI_HOTKEYSCAN_UNK7, 1874 TP_ACPI_HOTKEYSCAN_UNK8, 1875 1876 /* Adaptive keyboard keycodes */ 1877 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1878 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1879 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1880 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1881 TP_ACPI_HOTKEYSCAN_CLOUD, 1882 TP_ACPI_HOTKEYSCAN_UNK9, 1883 TP_ACPI_HOTKEYSCAN_VOICE, 1884 TP_ACPI_HOTKEYSCAN_UNK10, 1885 TP_ACPI_HOTKEYSCAN_GESTURES, 1886 TP_ACPI_HOTKEYSCAN_UNK11, 1887 TP_ACPI_HOTKEYSCAN_UNK12, 1888 TP_ACPI_HOTKEYSCAN_UNK13, 1889 TP_ACPI_HOTKEYSCAN_CONFIG, 1890 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1891 TP_ACPI_HOTKEYSCAN_RELOAD, 1892 TP_ACPI_HOTKEYSCAN_BACK, 1893 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1894 TP_ACPI_HOTKEYSCAN_MIC_UP, 1895 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1896 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1897 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1898 1899 /* Lenovo extended keymap, starting at 0x1300 */ 1900 TP_ACPI_HOTKEYSCAN_EXTENDED_START, 1901 /* first new observed key (star, favorites) is 0x1311 */ 1902 TP_ACPI_HOTKEYSCAN_STAR = 69, 1903 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1904 TP_ACPI_HOTKEYSCAN_CALCULATOR, 1905 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1906 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1907 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ 1908 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, 1909 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, 1910 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, 1911 1912 /* Hotkey keymap size */ 1913 TPACPI_HOTKEY_MAP_LEN 1914}; 1915 1916enum { /* Keys/events available through NVRAM polling */ 1917 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1918 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1919}; 1920 1921enum { /* Positions of some of the keys in hotkey masks */ 1922 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1923 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1924 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1925 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1926 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1927 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1928 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1929 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1930 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1931 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1932 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1933}; 1934 1935enum { /* NVRAM to ACPI HKEY group map */ 1936 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1937 TP_ACPI_HKEY_ZOOM_MASK | 1938 TP_ACPI_HKEY_DISPSWTCH_MASK | 1939 TP_ACPI_HKEY_HIBERNATE_MASK, 1940 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1941 TP_ACPI_HKEY_BRGHTDWN_MASK, 1942 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1943 TP_ACPI_HKEY_VOLDWN_MASK | 1944 TP_ACPI_HKEY_MUTE_MASK, 1945}; 1946 1947#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1948struct tp_nvram_state { 1949 u16 thinkpad_toggle:1; 1950 u16 zoom_toggle:1; 1951 u16 display_toggle:1; 1952 u16 thinklight_toggle:1; 1953 u16 hibernate_toggle:1; 1954 u16 displayexp_toggle:1; 1955 u16 display_state:1; 1956 u16 brightness_toggle:1; 1957 u16 volume_toggle:1; 1958 u16 mute:1; 1959 1960 u8 brightness_level; 1961 u8 volume_level; 1962}; 1963 1964/* kthread for the hotkey poller */ 1965static struct task_struct *tpacpi_hotkey_task; 1966 1967/* 1968 * Acquire mutex to write poller control variables as an 1969 * atomic block. 1970 * 1971 * Increment hotkey_config_change when changing them if you 1972 * want the kthread to forget old state. 1973 * 1974 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1975 */ 1976static struct mutex hotkey_thread_data_mutex; 1977static unsigned int hotkey_config_change; 1978 1979/* 1980 * hotkey poller control variables 1981 * 1982 * Must be atomic or readers will also need to acquire mutex 1983 * 1984 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1985 * should be used only when the changes need to be taken as 1986 * a block, OR when one needs to force the kthread to forget 1987 * old state. 1988 */ 1989static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 1990static unsigned int hotkey_poll_freq = 10; /* Hz */ 1991 1992#define HOTKEY_CONFIG_CRITICAL_START \ 1993 do { \ 1994 mutex_lock(&hotkey_thread_data_mutex); \ 1995 hotkey_config_change++; \ 1996 } while (0); 1997#define HOTKEY_CONFIG_CRITICAL_END \ 1998 mutex_unlock(&hotkey_thread_data_mutex); 1999 2000#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2001 2002#define hotkey_source_mask 0U 2003#define HOTKEY_CONFIG_CRITICAL_START 2004#define HOTKEY_CONFIG_CRITICAL_END 2005 2006#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2007 2008static struct mutex hotkey_mutex; 2009 2010static enum { /* Reasons for waking up */ 2011 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 2012 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 2013 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 2014} hotkey_wakeup_reason; 2015 2016static int hotkey_autosleep_ack; 2017 2018static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 2019static u32 hotkey_all_mask; /* all events supported in fw */ 2020static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 2021static u32 hotkey_reserved_mask; /* events better left disabled */ 2022static u32 hotkey_driver_mask; /* events needed by the driver */ 2023static u32 hotkey_user_mask; /* events visible to userspace */ 2024static u32 hotkey_acpi_mask; /* events enabled in firmware */ 2025 2026static u16 *hotkey_keycode_map; 2027 2028static struct attribute_set *hotkey_dev_attributes; 2029 2030static void tpacpi_driver_event(const unsigned int hkey_event); 2031static void hotkey_driver_event(const unsigned int scancode); 2032static void hotkey_poll_setup(const bool may_warn); 2033 2034/* HKEY.MHKG() return bits */ 2035#define TP_HOTKEY_TABLET_MASK (1 << 3) 2036enum { 2037 TP_ACPI_MULTI_MODE_INVALID = 0, 2038 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 2039 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 2040 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 2041 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 2042 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 2043 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 2044 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 2045}; 2046 2047enum { 2048 /* The following modes are considered tablet mode for the purpose of 2049 * reporting the status to userspace. i.e. in all these modes it makes 2050 * sense to disable the laptop input devices such as touchpad and 2051 * keyboard. 2052 */ 2053 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 2054 TP_ACPI_MULTI_MODE_STAND | 2055 TP_ACPI_MULTI_MODE_TENT | 2056 TP_ACPI_MULTI_MODE_STAND_TENT, 2057}; 2058 2059static int hotkey_get_wlsw(void) 2060{ 2061 int status; 2062 2063 if (!tp_features.hotkey_wlsw) 2064 return -ENODEV; 2065 2066#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 2067 if (dbg_wlswemul) 2068 return (tpacpi_wlsw_emulstate) ? 2069 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2070#endif 2071 2072 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 2073 return -EIO; 2074 2075 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2076} 2077 2078static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 2079{ 2080 int type = (s >> 16) & 0xffff; 2081 int value = s & 0xffff; 2082 int mode = TP_ACPI_MULTI_MODE_INVALID; 2083 int valid_modes = 0; 2084 2085 if (has_tablet_mode) 2086 *has_tablet_mode = 0; 2087 2088 switch (type) { 2089 case 1: 2090 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2091 TP_ACPI_MULTI_MODE_TABLET | 2092 TP_ACPI_MULTI_MODE_STAND_TENT; 2093 break; 2094 case 2: 2095 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2096 TP_ACPI_MULTI_MODE_FLAT | 2097 TP_ACPI_MULTI_MODE_TABLET | 2098 TP_ACPI_MULTI_MODE_STAND | 2099 TP_ACPI_MULTI_MODE_TENT; 2100 break; 2101 case 3: 2102 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2103 TP_ACPI_MULTI_MODE_FLAT; 2104 break; 2105 case 4: 2106 case 5: 2107 /* In mode 4, FLAT is not specified as a valid mode. However, 2108 * it can be seen at least on the X1 Yoga 2nd Generation. 2109 */ 2110 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2111 TP_ACPI_MULTI_MODE_FLAT | 2112 TP_ACPI_MULTI_MODE_TABLET | 2113 TP_ACPI_MULTI_MODE_STAND | 2114 TP_ACPI_MULTI_MODE_TENT; 2115 break; 2116 default: 2117 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2118 type, value, TPACPI_MAIL); 2119 return 0; 2120 } 2121 2122 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2123 *has_tablet_mode = 1; 2124 2125 switch (value) { 2126 case 1: 2127 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2128 break; 2129 case 2: 2130 mode = TP_ACPI_MULTI_MODE_FLAT; 2131 break; 2132 case 3: 2133 mode = TP_ACPI_MULTI_MODE_TABLET; 2134 break; 2135 case 4: 2136 if (type == 1) 2137 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2138 else 2139 mode = TP_ACPI_MULTI_MODE_STAND; 2140 break; 2141 case 5: 2142 mode = TP_ACPI_MULTI_MODE_TENT; 2143 break; 2144 default: 2145 if (type == 5 && value == 0xffff) { 2146 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2147 return 0; 2148 } 2149 } 2150 2151 if (!(mode & valid_modes)) { 2152 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2153 value, type, TPACPI_MAIL); 2154 return 0; 2155 } 2156 2157 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2158} 2159 2160static int hotkey_get_tablet_mode(int *status) 2161{ 2162 int s; 2163 2164 switch (tp_features.hotkey_tablet) { 2165 case TP_HOTKEY_TABLET_USES_MHKG: 2166 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2167 return -EIO; 2168 2169 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2170 break; 2171 case TP_HOTKEY_TABLET_USES_GMMS: 2172 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2173 return -EIO; 2174 2175 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2176 break; 2177 default: 2178 break; 2179 } 2180 2181 return 0; 2182} 2183 2184/* 2185 * Reads current event mask from firmware, and updates 2186 * hotkey_acpi_mask accordingly. Also resets any bits 2187 * from hotkey_user_mask that are unavailable to be 2188 * delivered (shadow requirement of the userspace ABI). 2189 * 2190 * Call with hotkey_mutex held 2191 */ 2192static int hotkey_mask_get(void) 2193{ 2194 if (tp_features.hotkey_mask) { 2195 u32 m = 0; 2196 2197 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2198 return -EIO; 2199 2200 hotkey_acpi_mask = m; 2201 } else { 2202 /* no mask support doesn't mean no event support... */ 2203 hotkey_acpi_mask = hotkey_all_mask; 2204 } 2205 2206 /* sync userspace-visible mask */ 2207 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2208 2209 return 0; 2210} 2211 2212static void hotkey_mask_warn_incomplete_mask(void) 2213{ 2214 /* log only what the user can fix... */ 2215 const u32 wantedmask = hotkey_driver_mask & 2216 ~(hotkey_acpi_mask | hotkey_source_mask) & 2217 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2218 2219 if (wantedmask) 2220 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2221} 2222 2223/* 2224 * Set the firmware mask when supported 2225 * 2226 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2227 * 2228 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2229 * 2230 * Call with hotkey_mutex held 2231 */ 2232static int hotkey_mask_set(u32 mask) 2233{ 2234 int i; 2235 int rc = 0; 2236 2237 const u32 fwmask = mask & ~hotkey_source_mask; 2238 2239 if (tp_features.hotkey_mask) { 2240 for (i = 0; i < 32; i++) { 2241 if (!acpi_evalf(hkey_handle, 2242 NULL, "MHKM", "vdd", i + 1, 2243 !!(mask & (1 << i)))) { 2244 rc = -EIO; 2245 break; 2246 } 2247 } 2248 } 2249 2250 /* 2251 * We *must* make an inconditional call to hotkey_mask_get to 2252 * refresh hotkey_acpi_mask and update hotkey_user_mask 2253 * 2254 * Take the opportunity to also log when we cannot _enable_ 2255 * a given event. 2256 */ 2257 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2258 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2259 fwmask, hotkey_acpi_mask); 2260 } 2261 2262 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2263 hotkey_mask_warn_incomplete_mask(); 2264 2265 return rc; 2266} 2267 2268/* 2269 * Sets hotkey_user_mask and tries to set the firmware mask 2270 * 2271 * Call with hotkey_mutex held 2272 */ 2273static int hotkey_user_mask_set(const u32 mask) 2274{ 2275 int rc; 2276 2277 /* Give people a chance to notice they are doing something that 2278 * is bound to go boom on their users sooner or later */ 2279 if (!tp_warned.hotkey_mask_ff && 2280 (mask == 0xffff || mask == 0xffffff || 2281 mask == 0xffffffff)) { 2282 tp_warned.hotkey_mask_ff = 1; 2283 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2284 mask); 2285 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2286 } 2287 2288 /* Try to enable what the user asked for, plus whatever we need. 2289 * this syncs everything but won't enable bits in hotkey_user_mask */ 2290 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2291 2292 /* Enable the available bits in hotkey_user_mask */ 2293 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2294 2295 return rc; 2296} 2297 2298/* 2299 * Sets the driver hotkey mask. 2300 * 2301 * Can be called even if the hotkey subdriver is inactive 2302 */ 2303static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2304{ 2305 int rc; 2306 2307 /* Do the right thing if hotkey_init has not been called yet */ 2308 if (!tp_features.hotkey) { 2309 hotkey_driver_mask = mask; 2310 return 0; 2311 } 2312 2313 mutex_lock(&hotkey_mutex); 2314 2315 HOTKEY_CONFIG_CRITICAL_START 2316 hotkey_driver_mask = mask; 2317#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2318 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2319#endif 2320 HOTKEY_CONFIG_CRITICAL_END 2321 2322 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2323 ~hotkey_source_mask); 2324 hotkey_poll_setup(true); 2325 2326 mutex_unlock(&hotkey_mutex); 2327 2328 return rc; 2329} 2330 2331static int hotkey_status_get(int *status) 2332{ 2333 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2334 return -EIO; 2335 2336 return 0; 2337} 2338 2339static int hotkey_status_set(bool enable) 2340{ 2341 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2342 return -EIO; 2343 2344 return 0; 2345} 2346 2347static void tpacpi_input_send_tabletsw(void) 2348{ 2349 int state; 2350 2351 if (tp_features.hotkey_tablet && 2352 !hotkey_get_tablet_mode(&state)) { 2353 mutex_lock(&tpacpi_inputdev_send_mutex); 2354 2355 input_report_switch(tpacpi_inputdev, 2356 SW_TABLET_MODE, !!state); 2357 input_sync(tpacpi_inputdev); 2358 2359 mutex_unlock(&tpacpi_inputdev_send_mutex); 2360 } 2361} 2362 2363/* Do NOT call without validating scancode first */ 2364static void tpacpi_input_send_key(const unsigned int scancode) 2365{ 2366 const unsigned int keycode = hotkey_keycode_map[scancode]; 2367 2368 if (keycode != KEY_RESERVED) { 2369 mutex_lock(&tpacpi_inputdev_send_mutex); 2370 2371 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2372 input_report_key(tpacpi_inputdev, keycode, 1); 2373 input_sync(tpacpi_inputdev); 2374 2375 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2376 input_report_key(tpacpi_inputdev, keycode, 0); 2377 input_sync(tpacpi_inputdev); 2378 2379 mutex_unlock(&tpacpi_inputdev_send_mutex); 2380 } 2381} 2382 2383/* Do NOT call without validating scancode first */ 2384static void tpacpi_input_send_key_masked(const unsigned int scancode) 2385{ 2386 hotkey_driver_event(scancode); 2387 if (hotkey_user_mask & (1 << scancode)) 2388 tpacpi_input_send_key(scancode); 2389} 2390 2391#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2392static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2393 2394/* Do NOT call without validating scancode first */ 2395static void tpacpi_hotkey_send_key(unsigned int scancode) 2396{ 2397 tpacpi_input_send_key_masked(scancode); 2398} 2399 2400static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2401{ 2402 u8 d; 2403 2404 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2405 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2406 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2407 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2408 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2409 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2410 } 2411 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2412 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2413 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2414 } 2415 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2416 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2417 n->displayexp_toggle = 2418 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2419 } 2420 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2421 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2422 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2423 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2424 n->brightness_toggle = 2425 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2426 } 2427 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2428 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2429 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2430 >> TP_NVRAM_POS_LEVEL_VOLUME; 2431 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2432 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2433 } 2434} 2435 2436#define TPACPI_COMPARE_KEY(__scancode, __member) \ 2437do { \ 2438 if ((event_mask & (1 << __scancode)) && \ 2439 oldn->__member != newn->__member) \ 2440 tpacpi_hotkey_send_key(__scancode); \ 2441} while (0) 2442 2443#define TPACPI_MAY_SEND_KEY(__scancode) \ 2444do { \ 2445 if (event_mask & (1 << __scancode)) \ 2446 tpacpi_hotkey_send_key(__scancode); \ 2447} while (0) 2448 2449static void issue_volchange(const unsigned int oldvol, 2450 const unsigned int newvol, 2451 const u32 event_mask) 2452{ 2453 unsigned int i = oldvol; 2454 2455 while (i > newvol) { 2456 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2457 i--; 2458 } 2459 while (i < newvol) { 2460 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2461 i++; 2462 } 2463} 2464 2465static void issue_brightnesschange(const unsigned int oldbrt, 2466 const unsigned int newbrt, 2467 const u32 event_mask) 2468{ 2469 unsigned int i = oldbrt; 2470 2471 while (i > newbrt) { 2472 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2473 i--; 2474 } 2475 while (i < newbrt) { 2476 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2477 i++; 2478 } 2479} 2480 2481static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2482 struct tp_nvram_state *newn, 2483 const u32 event_mask) 2484{ 2485 2486 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2487 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2488 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2489 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2490 2491 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2492 2493 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2494 2495 /* 2496 * Handle volume 2497 * 2498 * This code is supposed to duplicate the IBM firmware behaviour: 2499 * - Pressing MUTE issues mute hotkey message, even when already mute 2500 * - Pressing Volume up/down issues volume up/down hotkey messages, 2501 * even when already at maximum or minimum volume 2502 * - The act of unmuting issues volume up/down notification, 2503 * depending which key was used to unmute 2504 * 2505 * We are constrained to what the NVRAM can tell us, which is not much 2506 * and certainly not enough if more than one volume hotkey was pressed 2507 * since the last poll cycle. 2508 * 2509 * Just to make our life interesting, some newer Lenovo ThinkPads have 2510 * bugs in the BIOS and may fail to update volume_toggle properly. 2511 */ 2512 if (newn->mute) { 2513 /* muted */ 2514 if (!oldn->mute || 2515 oldn->volume_toggle != newn->volume_toggle || 2516 oldn->volume_level != newn->volume_level) { 2517 /* recently muted, or repeated mute keypress, or 2518 * multiple presses ending in mute */ 2519 issue_volchange(oldn->volume_level, newn->volume_level, 2520 event_mask); 2521 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2522 } 2523 } else { 2524 /* unmute */ 2525 if (oldn->mute) { 2526 /* recently unmuted, issue 'unmute' keypress */ 2527 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2528 } 2529 if (oldn->volume_level != newn->volume_level) { 2530 issue_volchange(oldn->volume_level, newn->volume_level, 2531 event_mask); 2532 } else if (oldn->volume_toggle != newn->volume_toggle) { 2533 /* repeated vol up/down keypress at end of scale ? */ 2534 if (newn->volume_level == 0) 2535 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2536 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2537 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2538 } 2539 } 2540 2541 /* handle brightness */ 2542 if (oldn->brightness_level != newn->brightness_level) { 2543 issue_brightnesschange(oldn->brightness_level, 2544 newn->brightness_level, event_mask); 2545 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2546 /* repeated key presses that didn't change state */ 2547 if (newn->brightness_level == 0) 2548 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2549 else if (newn->brightness_level >= bright_maxlvl 2550 && !tp_features.bright_unkfw) 2551 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2552 } 2553 2554#undef TPACPI_COMPARE_KEY 2555#undef TPACPI_MAY_SEND_KEY 2556} 2557 2558/* 2559 * Polling driver 2560 * 2561 * We track all events in hotkey_source_mask all the time, since 2562 * most of them are edge-based. We only issue those requested by 2563 * hotkey_user_mask or hotkey_driver_mask, though. 2564 */ 2565static int hotkey_kthread(void *data) 2566{ 2567 struct tp_nvram_state s[2] = { 0 }; 2568 u32 poll_mask, event_mask; 2569 unsigned int si, so; 2570 unsigned long t; 2571 unsigned int change_detector; 2572 unsigned int poll_freq; 2573 bool was_frozen; 2574 2575 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2576 goto exit; 2577 2578 set_freezable(); 2579 2580 so = 0; 2581 si = 1; 2582 t = 0; 2583 2584 /* Initial state for compares */ 2585 mutex_lock(&hotkey_thread_data_mutex); 2586 change_detector = hotkey_config_change; 2587 poll_mask = hotkey_source_mask; 2588 event_mask = hotkey_source_mask & 2589 (hotkey_driver_mask | hotkey_user_mask); 2590 poll_freq = hotkey_poll_freq; 2591 mutex_unlock(&hotkey_thread_data_mutex); 2592 hotkey_read_nvram(&s[so], poll_mask); 2593 2594 while (!kthread_should_stop()) { 2595 if (t == 0) { 2596 if (likely(poll_freq)) 2597 t = 1000/poll_freq; 2598 else 2599 t = 100; /* should never happen... */ 2600 } 2601 t = msleep_interruptible(t); 2602 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2603 break; 2604 2605 if (t > 0 && !was_frozen) 2606 continue; 2607 2608 mutex_lock(&hotkey_thread_data_mutex); 2609 if (was_frozen || hotkey_config_change != change_detector) { 2610 /* forget old state on thaw or config change */ 2611 si = so; 2612 t = 0; 2613 change_detector = hotkey_config_change; 2614 } 2615 poll_mask = hotkey_source_mask; 2616 event_mask = hotkey_source_mask & 2617 (hotkey_driver_mask | hotkey_user_mask); 2618 poll_freq = hotkey_poll_freq; 2619 mutex_unlock(&hotkey_thread_data_mutex); 2620 2621 if (likely(poll_mask)) { 2622 hotkey_read_nvram(&s[si], poll_mask); 2623 if (likely(si != so)) { 2624 hotkey_compare_and_issue_event(&s[so], &s[si], 2625 event_mask); 2626 } 2627 } 2628 2629 so = si; 2630 si ^= 1; 2631 } 2632 2633exit: 2634 return 0; 2635} 2636 2637/* call with hotkey_mutex held */ 2638static void hotkey_poll_stop_sync(void) 2639{ 2640 if (tpacpi_hotkey_task) { 2641 kthread_stop(tpacpi_hotkey_task); 2642 tpacpi_hotkey_task = NULL; 2643 } 2644} 2645 2646/* call with hotkey_mutex held */ 2647static void hotkey_poll_setup(const bool may_warn) 2648{ 2649 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2650 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2651 2652 if (hotkey_poll_freq > 0 && 2653 (poll_driver_mask || 2654 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2655 if (!tpacpi_hotkey_task) { 2656 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2657 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2658 if (IS_ERR(tpacpi_hotkey_task)) { 2659 tpacpi_hotkey_task = NULL; 2660 pr_err("could not create kernel thread for hotkey polling\n"); 2661 } 2662 } 2663 } else { 2664 hotkey_poll_stop_sync(); 2665 if (may_warn && (poll_driver_mask || poll_user_mask) && 2666 hotkey_poll_freq == 0) { 2667 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2668 poll_user_mask, poll_driver_mask); 2669 } 2670 } 2671} 2672 2673static void hotkey_poll_setup_safe(const bool may_warn) 2674{ 2675 mutex_lock(&hotkey_mutex); 2676 hotkey_poll_setup(may_warn); 2677 mutex_unlock(&hotkey_mutex); 2678} 2679 2680/* call with hotkey_mutex held */ 2681static void hotkey_poll_set_freq(unsigned int freq) 2682{ 2683 if (!freq) 2684 hotkey_poll_stop_sync(); 2685 2686 hotkey_poll_freq = freq; 2687} 2688 2689#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2690 2691static void hotkey_poll_setup(const bool __unused) 2692{ 2693} 2694 2695static void hotkey_poll_setup_safe(const bool __unused) 2696{ 2697} 2698 2699#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2700 2701static int hotkey_inputdev_open(struct input_dev *dev) 2702{ 2703 switch (tpacpi_lifecycle) { 2704 case TPACPI_LIFE_INIT: 2705 case TPACPI_LIFE_RUNNING: 2706 hotkey_poll_setup_safe(false); 2707 return 0; 2708 case TPACPI_LIFE_EXITING: 2709 return -EBUSY; 2710 } 2711 2712 /* Should only happen if tpacpi_lifecycle is corrupt */ 2713 BUG(); 2714 return -EBUSY; 2715} 2716 2717static void hotkey_inputdev_close(struct input_dev *dev) 2718{ 2719 /* disable hotkey polling when possible */ 2720 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2721 !(hotkey_source_mask & hotkey_driver_mask)) 2722 hotkey_poll_setup_safe(false); 2723} 2724 2725/* sysfs hotkey enable ------------------------------------------------- */ 2726static ssize_t hotkey_enable_show(struct device *dev, 2727 struct device_attribute *attr, 2728 char *buf) 2729{ 2730 int res, status; 2731 2732 printk_deprecated_attribute("hotkey_enable", 2733 "Hotkey reporting is always enabled"); 2734 2735 res = hotkey_status_get(&status); 2736 if (res) 2737 return res; 2738 2739 return snprintf(buf, PAGE_SIZE, "%d\n", status); 2740} 2741 2742static ssize_t hotkey_enable_store(struct device *dev, 2743 struct device_attribute *attr, 2744 const char *buf, size_t count) 2745{ 2746 unsigned long t; 2747 2748 printk_deprecated_attribute("hotkey_enable", 2749 "Hotkeys can be disabled through hotkey_mask"); 2750 2751 if (parse_strtoul(buf, 1, &t)) 2752 return -EINVAL; 2753 2754 if (t == 0) 2755 return -EPERM; 2756 2757 return count; 2758} 2759 2760static DEVICE_ATTR_RW(hotkey_enable); 2761 2762/* sysfs hotkey mask --------------------------------------------------- */ 2763static ssize_t hotkey_mask_show(struct device *dev, 2764 struct device_attribute *attr, 2765 char *buf) 2766{ 2767 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask); 2768} 2769 2770static ssize_t hotkey_mask_store(struct device *dev, 2771 struct device_attribute *attr, 2772 const char *buf, size_t count) 2773{ 2774 unsigned long t; 2775 int res; 2776 2777 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2778 return -EINVAL; 2779 2780 if (mutex_lock_killable(&hotkey_mutex)) 2781 return -ERESTARTSYS; 2782 2783 res = hotkey_user_mask_set(t); 2784 2785#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2786 hotkey_poll_setup(true); 2787#endif 2788 2789 mutex_unlock(&hotkey_mutex); 2790 2791 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2792 2793 return (res) ? res : count; 2794} 2795 2796static DEVICE_ATTR_RW(hotkey_mask); 2797 2798/* sysfs hotkey bios_enabled ------------------------------------------- */ 2799static ssize_t hotkey_bios_enabled_show(struct device *dev, 2800 struct device_attribute *attr, 2801 char *buf) 2802{ 2803 return sprintf(buf, "0\n"); 2804} 2805 2806static DEVICE_ATTR_RO(hotkey_bios_enabled); 2807 2808/* sysfs hotkey bios_mask ---------------------------------------------- */ 2809static ssize_t hotkey_bios_mask_show(struct device *dev, 2810 struct device_attribute *attr, 2811 char *buf) 2812{ 2813 printk_deprecated_attribute("hotkey_bios_mask", 2814 "This attribute is useless."); 2815 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); 2816} 2817 2818static DEVICE_ATTR_RO(hotkey_bios_mask); 2819 2820/* sysfs hotkey all_mask ----------------------------------------------- */ 2821static ssize_t hotkey_all_mask_show(struct device *dev, 2822 struct device_attribute *attr, 2823 char *buf) 2824{ 2825 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2826 hotkey_all_mask | hotkey_source_mask); 2827} 2828 2829static DEVICE_ATTR_RO(hotkey_all_mask); 2830 2831/* sysfs hotkey all_mask ----------------------------------------------- */ 2832static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2833 struct device_attribute *attr, 2834 char *buf) 2835{ 2836 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2837 hotkey_adaptive_all_mask | hotkey_source_mask); 2838} 2839 2840static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2841 2842/* sysfs hotkey recommended_mask --------------------------------------- */ 2843static ssize_t hotkey_recommended_mask_show(struct device *dev, 2844 struct device_attribute *attr, 2845 char *buf) 2846{ 2847 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2848 (hotkey_all_mask | hotkey_source_mask) 2849 & ~hotkey_reserved_mask); 2850} 2851 2852static DEVICE_ATTR_RO(hotkey_recommended_mask); 2853 2854#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2855 2856/* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2857static ssize_t hotkey_source_mask_show(struct device *dev, 2858 struct device_attribute *attr, 2859 char *buf) 2860{ 2861 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); 2862} 2863 2864static ssize_t hotkey_source_mask_store(struct device *dev, 2865 struct device_attribute *attr, 2866 const char *buf, size_t count) 2867{ 2868 unsigned long t; 2869 u32 r_ev; 2870 int rc; 2871 2872 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2873 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2874 return -EINVAL; 2875 2876 if (mutex_lock_killable(&hotkey_mutex)) 2877 return -ERESTARTSYS; 2878 2879 HOTKEY_CONFIG_CRITICAL_START 2880 hotkey_source_mask = t; 2881 HOTKEY_CONFIG_CRITICAL_END 2882 2883 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2884 ~hotkey_source_mask); 2885 hotkey_poll_setup(true); 2886 2887 /* check if events needed by the driver got disabled */ 2888 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2889 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2890 2891 mutex_unlock(&hotkey_mutex); 2892 2893 if (rc < 0) 2894 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2895 2896 if (r_ev) 2897 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2898 r_ev); 2899 2900 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2901 2902 return (rc < 0) ? rc : count; 2903} 2904 2905static DEVICE_ATTR_RW(hotkey_source_mask); 2906 2907/* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2908static ssize_t hotkey_poll_freq_show(struct device *dev, 2909 struct device_attribute *attr, 2910 char *buf) 2911{ 2912 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); 2913} 2914 2915static ssize_t hotkey_poll_freq_store(struct device *dev, 2916 struct device_attribute *attr, 2917 const char *buf, size_t count) 2918{ 2919 unsigned long t; 2920 2921 if (parse_strtoul(buf, 25, &t)) 2922 return -EINVAL; 2923 2924 if (mutex_lock_killable(&hotkey_mutex)) 2925 return -ERESTARTSYS; 2926 2927 hotkey_poll_set_freq(t); 2928 hotkey_poll_setup(true); 2929 2930 mutex_unlock(&hotkey_mutex); 2931 2932 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2933 2934 return count; 2935} 2936 2937static DEVICE_ATTR_RW(hotkey_poll_freq); 2938 2939#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2940 2941/* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2942static ssize_t hotkey_radio_sw_show(struct device *dev, 2943 struct device_attribute *attr, 2944 char *buf) 2945{ 2946 int res; 2947 res = hotkey_get_wlsw(); 2948 if (res < 0) 2949 return res; 2950 2951 /* Opportunistic update */ 2952 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2953 2954 return snprintf(buf, PAGE_SIZE, "%d\n", 2955 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2956} 2957 2958static DEVICE_ATTR_RO(hotkey_radio_sw); 2959 2960static void hotkey_radio_sw_notify_change(void) 2961{ 2962 if (tp_features.hotkey_wlsw) 2963 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2964 "hotkey_radio_sw"); 2965} 2966 2967/* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2968static ssize_t hotkey_tablet_mode_show(struct device *dev, 2969 struct device_attribute *attr, 2970 char *buf) 2971{ 2972 int res, s; 2973 res = hotkey_get_tablet_mode(&s); 2974 if (res < 0) 2975 return res; 2976 2977 return snprintf(buf, PAGE_SIZE, "%d\n", !!s); 2978} 2979 2980static DEVICE_ATTR_RO(hotkey_tablet_mode); 2981 2982static void hotkey_tablet_mode_notify_change(void) 2983{ 2984 if (tp_features.hotkey_tablet) 2985 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2986 "hotkey_tablet_mode"); 2987} 2988 2989/* sysfs wakeup reason (pollable) -------------------------------------- */ 2990static ssize_t hotkey_wakeup_reason_show(struct device *dev, 2991 struct device_attribute *attr, 2992 char *buf) 2993{ 2994 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); 2995} 2996 2997static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 2998 2999static void hotkey_wakeup_reason_notify_change(void) 3000{ 3001 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3002 "wakeup_reason"); 3003} 3004 3005/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 3006static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 3007 struct device_attribute *attr, 3008 char *buf) 3009{ 3010 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); 3011} 3012 3013static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 3014 hotkey_wakeup_hotunplug_complete_show, NULL); 3015 3016static void hotkey_wakeup_hotunplug_complete_notify_change(void) 3017{ 3018 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3019 "wakeup_hotunplug_complete"); 3020} 3021 3022/* sysfs adaptive kbd mode --------------------------------------------- */ 3023 3024static int adaptive_keyboard_get_mode(void); 3025static int adaptive_keyboard_set_mode(int new_mode); 3026 3027enum ADAPTIVE_KEY_MODE { 3028 HOME_MODE, 3029 WEB_BROWSER_MODE, 3030 WEB_CONFERENCE_MODE, 3031 FUNCTION_MODE, 3032 LAYFLAT_MODE 3033}; 3034 3035static ssize_t adaptive_kbd_mode_show(struct device *dev, 3036 struct device_attribute *attr, 3037 char *buf) 3038{ 3039 int current_mode; 3040 3041 current_mode = adaptive_keyboard_get_mode(); 3042 if (current_mode < 0) 3043 return current_mode; 3044 3045 return snprintf(buf, PAGE_SIZE, "%d\n", current_mode); 3046} 3047 3048static ssize_t adaptive_kbd_mode_store(struct device *dev, 3049 struct device_attribute *attr, 3050 const char *buf, size_t count) 3051{ 3052 unsigned long t; 3053 int res; 3054 3055 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 3056 return -EINVAL; 3057 3058 res = adaptive_keyboard_set_mode(t); 3059 return (res < 0) ? res : count; 3060} 3061 3062static DEVICE_ATTR_RW(adaptive_kbd_mode); 3063 3064static struct attribute *adaptive_kbd_attributes[] = { 3065 &dev_attr_adaptive_kbd_mode.attr, 3066 NULL 3067}; 3068 3069static const struct attribute_group adaptive_kbd_attr_group = { 3070 .attrs = adaptive_kbd_attributes, 3071}; 3072 3073/* --------------------------------------------------------------------- */ 3074 3075static struct attribute *hotkey_attributes[] __initdata = { 3076 &dev_attr_hotkey_enable.attr, 3077 &dev_attr_hotkey_bios_enabled.attr, 3078 &dev_attr_hotkey_bios_mask.attr, 3079 &dev_attr_wakeup_reason.attr, 3080 &dev_attr_wakeup_hotunplug_complete.attr, 3081 &dev_attr_hotkey_mask.attr, 3082 &dev_attr_hotkey_all_mask.attr, 3083 &dev_attr_hotkey_adaptive_all_mask.attr, 3084 &dev_attr_hotkey_recommended_mask.attr, 3085#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3086 &dev_attr_hotkey_source_mask.attr, 3087 &dev_attr_hotkey_poll_freq.attr, 3088#endif 3089}; 3090 3091/* 3092 * Sync both the hw and sw blocking state of all switches 3093 */ 3094static void tpacpi_send_radiosw_update(void) 3095{ 3096 int wlsw; 3097 3098 /* 3099 * We must sync all rfkill controllers *before* issuing any 3100 * rfkill input events, or we will race the rfkill core input 3101 * handler. 3102 * 3103 * tpacpi_inputdev_send_mutex works as a synchronization point 3104 * for the above. 3105 * 3106 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3107 */ 3108 3109 wlsw = hotkey_get_wlsw(); 3110 3111 /* Sync hw blocking state first if it is hw-blocked */ 3112 if (wlsw == TPACPI_RFK_RADIO_OFF) 3113 tpacpi_rfk_update_hwblock_state(true); 3114 3115 /* Sync hw blocking state last if it is hw-unblocked */ 3116 if (wlsw == TPACPI_RFK_RADIO_ON) 3117 tpacpi_rfk_update_hwblock_state(false); 3118 3119 /* Issue rfkill input event for WLSW switch */ 3120 if (!(wlsw < 0)) { 3121 mutex_lock(&tpacpi_inputdev_send_mutex); 3122 3123 input_report_switch(tpacpi_inputdev, 3124 SW_RFKILL_ALL, (wlsw > 0)); 3125 input_sync(tpacpi_inputdev); 3126 3127 mutex_unlock(&tpacpi_inputdev_send_mutex); 3128 } 3129 3130 /* 3131 * this can be unconditional, as we will poll state again 3132 * if userspace uses the notify to read data 3133 */ 3134 hotkey_radio_sw_notify_change(); 3135} 3136 3137static void hotkey_exit(void) 3138{ 3139#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3140 mutex_lock(&hotkey_mutex); 3141 hotkey_poll_stop_sync(); 3142 mutex_unlock(&hotkey_mutex); 3143#endif 3144 3145 if (hotkey_dev_attributes) 3146 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3147 3148 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3149 "restoring original HKEY status and mask\n"); 3150 /* yes, there is a bitwise or below, we want the 3151 * functions to be called even if one of them fail */ 3152 if (((tp_features.hotkey_mask && 3153 hotkey_mask_set(hotkey_orig_mask)) | 3154 hotkey_status_set(false)) != 0) 3155 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3156} 3157 3158static void __init hotkey_unmap(const unsigned int scancode) 3159{ 3160 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3161 clear_bit(hotkey_keycode_map[scancode], 3162 tpacpi_inputdev->keybit); 3163 hotkey_keycode_map[scancode] = KEY_RESERVED; 3164 } 3165} 3166 3167/* 3168 * HKEY quirks: 3169 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3170 */ 3171 3172#define TPACPI_HK_Q_INIMASK 0x0001 3173 3174static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3175 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3176 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3177 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3178 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3179 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3180 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3181 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3182 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3183 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3184 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3185 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3186 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3187 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3188 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3189 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3190 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3191 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3192 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3193 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3194}; 3195 3196typedef u16 tpacpi_keymap_entry_t; 3197typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; 3198 3199static int hotkey_init_tablet_mode(void) 3200{ 3201 int in_tablet_mode = 0, res; 3202 char *type = NULL; 3203 3204 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3205 int has_tablet_mode; 3206 3207 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3208 &has_tablet_mode); 3209 /* 3210 * The Yoga 11e series has 2 accelerometers described by a 3211 * BOSC0200 ACPI node. This setup relies on a Windows service 3212 * which calls special ACPI methods on this node to report 3213 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver 3214 * does not support this, so skip the hotkey on these models. 3215 */ 3216 if (has_tablet_mode && !acpi_dev_present("BOSC0200", "1", -1)) 3217 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3218 type = "GMMS"; 3219 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3220 /* For X41t, X60t, X61t Tablets... */ 3221 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3222 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3223 type = "MHKG"; 3224 } 3225 3226 if (!tp_features.hotkey_tablet) 3227 return 0; 3228 3229 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3230 type, in_tablet_mode ? "tablet" : "laptop"); 3231 3232 res = add_to_attr_set(hotkey_dev_attributes, 3233 &dev_attr_hotkey_tablet_mode.attr); 3234 if (res) 3235 return -1; 3236 3237 return in_tablet_mode; 3238} 3239 3240static int __init hotkey_init(struct ibm_init_struct *iibm) 3241{ 3242 /* Requirements for changing the default keymaps: 3243 * 3244 * 1. Many of the keys are mapped to KEY_RESERVED for very 3245 * good reasons. Do not change them unless you have deep 3246 * knowledge on the IBM and Lenovo ThinkPad firmware for 3247 * the various ThinkPad models. The driver behaves 3248 * differently for KEY_RESERVED: such keys have their 3249 * hot key mask *unset* in mask_recommended, and also 3250 * in the initial hot key mask programmed into the 3251 * firmware at driver load time, which means the firm- 3252 * ware may react very differently if you change them to 3253 * something else; 3254 * 3255 * 2. You must be subscribed to the linux-thinkpad and 3256 * ibm-acpi-devel mailing lists, and you should read the 3257 * list archives since 2007 if you want to change the 3258 * keymaps. This requirement exists so that you will 3259 * know the past history of problems with the thinkpad- 3260 * acpi driver keymaps, and also that you will be 3261 * listening to any bug reports; 3262 * 3263 * 3. Do not send thinkpad-acpi specific patches directly to 3264 * for merging, *ever*. Send them to the linux-acpi 3265 * mailinglist for comments. Merging is to be done only 3266 * through acpi-test and the ACPI maintainer. 3267 * 3268 * If the above is too much to ask, don't change the keymap. 3269 * Ask the thinkpad-acpi maintainer to do it, instead. 3270 */ 3271 3272 enum keymap_index { 3273 TPACPI_KEYMAP_IBM_GENERIC = 0, 3274 TPACPI_KEYMAP_LENOVO_GENERIC, 3275 }; 3276 3277 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3278 /* Generic keymap for IBM ThinkPads */ 3279 [TPACPI_KEYMAP_IBM_GENERIC] = { 3280 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3281 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3282 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3283 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3284 3285 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3286 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3287 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3288 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3289 3290 /* brightness: firmware always reacts to them */ 3291 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3292 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3293 3294 /* Thinklight: firmware always react to it */ 3295 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3296 3297 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3298 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3299 3300 /* Volume: firmware always react to it and reprograms 3301 * the built-in *extra* mixer. Never map it to control 3302 * another mixer by default. */ 3303 KEY_RESERVED, /* 0x14: VOLUME UP */ 3304 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3305 KEY_RESERVED, /* 0x16: MUTE */ 3306 3307 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3308 3309 /* (assignments unknown, please report if found) */ 3310 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3311 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3312 3313 /* No assignments, only used for Adaptive keyboards. */ 3314 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3315 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3316 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3317 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3318 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3319 3320 /* No assignment, used for newer Lenovo models */ 3321 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 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, KEY_UNKNOWN 3327 3328 }, 3329 3330 /* Generic keymap for Lenovo ThinkPads */ 3331 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3332 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3333 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3334 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3335 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3336 3337 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3338 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3339 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3340 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3341 3342 /* These should be enabled --only-- when ACPI video 3343 * is disabled (i.e. in "vendor" mode), and are handled 3344 * in a special way by the init code */ 3345 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3346 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3347 3348 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3349 3350 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3351 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3352 3353 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3354 * react to it and reprograms the built-in *extra* mixer. 3355 * Never map it to control another mixer by default. 3356 * 3357 * T60?, T61, R60?, R61: firmware and EC tries to send 3358 * these over the regular keyboard, so these are no-ops, 3359 * but there are still weird bugs re. MUTE, so do not 3360 * change unless you get test reports from all Lenovo 3361 * models. May cause the BIOS to interfere with the 3362 * HDA mixer. 3363 */ 3364 KEY_RESERVED, /* 0x14: VOLUME UP */ 3365 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3366 KEY_RESERVED, /* 0x16: MUTE */ 3367 3368 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3369 3370 /* (assignments unknown, please report if found) */ 3371 KEY_UNKNOWN, KEY_UNKNOWN, 3372 3373 /* 3374 * The mic mute button only sends 0x1a. It does not 3375 * automatically mute the mic or change the mute light. 3376 */ 3377 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3378 3379 /* (assignments unknown, please report if found) */ 3380 KEY_UNKNOWN, 3381 3382 /* Extra keys in use since the X240 / T440 / T540 */ 3383 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3384 3385 /* 3386 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3387 * The first item in this list is the Mute button which is 3388 * emitted with 0x103 through 3389 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3390 * symbol is held. 3391 * We'll need to offset those by 0x20. 3392 */ 3393 KEY_RESERVED, /* Mute held, 0x103 */ 3394 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3395 KEY_RESERVED, /* Clipping tool */ 3396 KEY_RESERVED, /* Cloud */ 3397 KEY_RESERVED, 3398 KEY_VOICECOMMAND, /* Voice */ 3399 KEY_RESERVED, 3400 KEY_RESERVED, /* Gestures */ 3401 KEY_RESERVED, 3402 KEY_RESERVED, 3403 KEY_RESERVED, 3404 KEY_CONFIG, /* Settings */ 3405 KEY_RESERVED, /* New tab */ 3406 KEY_REFRESH, /* Reload */ 3407 KEY_BACK, /* Back */ 3408 KEY_RESERVED, /* Microphone down */ 3409 KEY_RESERVED, /* Microphone up */ 3410 KEY_RESERVED, /* Microphone cancellation */ 3411 KEY_RESERVED, /* Camera mode */ 3412 KEY_RESERVED, /* Rotate display, 0x116 */ 3413 3414 /* 3415 * These are found in 2017 models (e.g. T470s, X270). 3416 * The lowest known value is 0x311, which according to 3417 * the manual should launch a user defined favorite 3418 * application. 3419 * 3420 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3421 * corresponding to 0x34. 3422 */ 3423 3424 /* (assignments unknown, please report if found) */ 3425 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3426 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3427 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3428 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3429 KEY_UNKNOWN, 3430 3431 KEY_BOOKMARKS, /* Favorite app, 0x311 */ 3432 KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */ 3433 KEY_CALC, /* Calculator (above numpad, P52) */ 3434 KEY_BLUETOOTH, /* Bluetooth */ 3435 KEY_KEYBOARD, /* Keyboard, 0x315 */ 3436 KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */ 3437 KEY_NOTIFICATION_CENTER, /* Notification Center */ 3438 KEY_PICKUP_PHONE, /* Answer incoming call */ 3439 KEY_HANGUP_PHONE, /* Decline incoming call */ 3440 }, 3441 }; 3442 3443 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3444 /* Generic maps (fallback) */ 3445 { 3446 .vendor = PCI_VENDOR_ID_IBM, 3447 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3448 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3449 }, 3450 { 3451 .vendor = PCI_VENDOR_ID_LENOVO, 3452 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3453 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3454 }, 3455 }; 3456 3457#define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3458#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3459 3460 int res, i; 3461 int status; 3462 int hkeyv; 3463 bool radiosw_state = false; 3464 bool tabletsw_state = false; 3465 3466 unsigned long quirks; 3467 unsigned long keymap_id; 3468 3469 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3470 "initializing hotkey subdriver\n"); 3471 3472 BUG_ON(!tpacpi_inputdev); 3473 BUG_ON(tpacpi_inputdev->open != NULL || 3474 tpacpi_inputdev->close != NULL); 3475 3476 TPACPI_ACPIHANDLE_INIT(hkey); 3477 mutex_init(&hotkey_mutex); 3478 3479#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3480 mutex_init(&hotkey_thread_data_mutex); 3481#endif 3482 3483 /* hotkey not supported on 570 */ 3484 tp_features.hotkey = hkey_handle != NULL; 3485 3486 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3487 "hotkeys are %s\n", 3488 str_supported(tp_features.hotkey)); 3489 3490 if (!tp_features.hotkey) 3491 return 1; 3492 3493 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3494 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3495 3496 tpacpi_disable_brightness_delay(); 3497 3498 /* MUST have enough space for all attributes to be added to 3499 * hotkey_dev_attributes */ 3500 hotkey_dev_attributes = create_attr_set( 3501 ARRAY_SIZE(hotkey_attributes) + 2, 3502 NULL); 3503 if (!hotkey_dev_attributes) 3504 return -ENOMEM; 3505 res = add_many_to_attr_set(hotkey_dev_attributes, 3506 hotkey_attributes, 3507 ARRAY_SIZE(hotkey_attributes)); 3508 if (res) 3509 goto err_exit; 3510 3511 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3512 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3513 for HKEY interface version 0x100 */ 3514 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3515 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3516 "firmware HKEY interface version: 0x%x\n", 3517 hkeyv); 3518 3519 switch (hkeyv >> 8) { 3520 case 1: 3521 /* 3522 * MHKV 0x100 in A31, R40, R40e, 3523 * T4x, X31, and later 3524 */ 3525 3526 /* Paranoia check AND init hotkey_all_mask */ 3527 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3528 "MHKA", "qd")) { 3529 pr_err("missing MHKA handler, please report this to %s\n", 3530 TPACPI_MAIL); 3531 /* Fallback: pre-init for FN+F3,F4,F12 */ 3532 hotkey_all_mask = 0x080cU; 3533 } else { 3534 tp_features.hotkey_mask = 1; 3535 } 3536 break; 3537 3538 case 2: 3539 /* 3540 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3541 */ 3542 3543 /* Paranoia check AND init hotkey_all_mask */ 3544 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3545 "MHKA", "dd", 1)) { 3546 pr_err("missing MHKA handler, please report this to %s\n", 3547 TPACPI_MAIL); 3548 /* Fallback: pre-init for FN+F3,F4,F12 */ 3549 hotkey_all_mask = 0x080cU; 3550 } else { 3551 tp_features.hotkey_mask = 1; 3552 } 3553 3554 /* 3555 * Check if we have an adaptive keyboard, like on the 3556 * Lenovo Carbon X1 2014 (2nd Gen). 3557 */ 3558 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3559 "MHKA", "dd", 2)) { 3560 if (hotkey_adaptive_all_mask != 0) { 3561 tp_features.has_adaptive_kbd = true; 3562 res = sysfs_create_group( 3563 &tpacpi_pdev->dev.kobj, 3564 &adaptive_kbd_attr_group); 3565 if (res) 3566 goto err_exit; 3567 } 3568 } else { 3569 tp_features.has_adaptive_kbd = false; 3570 hotkey_adaptive_all_mask = 0x0U; 3571 } 3572 break; 3573 3574 default: 3575 pr_err("unknown version of the HKEY interface: 0x%x\n", 3576 hkeyv); 3577 pr_err("please report this to %s\n", TPACPI_MAIL); 3578 break; 3579 } 3580 } 3581 3582 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3583 "hotkey masks are %s\n", 3584 str_supported(tp_features.hotkey_mask)); 3585 3586 /* Init hotkey_all_mask if not initialized yet */ 3587 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3588 (quirks & TPACPI_HK_Q_INIMASK)) 3589 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3590 3591 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3592 if (tp_features.hotkey_mask) { 3593 /* hotkey_source_mask *must* be zero for 3594 * the first hotkey_mask_get to return hotkey_orig_mask */ 3595 res = hotkey_mask_get(); 3596 if (res) 3597 goto err_exit; 3598 3599 hotkey_orig_mask = hotkey_acpi_mask; 3600 } else { 3601 hotkey_orig_mask = hotkey_all_mask; 3602 hotkey_acpi_mask = hotkey_all_mask; 3603 } 3604 3605#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3606 if (dbg_wlswemul) { 3607 tp_features.hotkey_wlsw = 1; 3608 radiosw_state = !!tpacpi_wlsw_emulstate; 3609 pr_info("radio switch emulation enabled\n"); 3610 } else 3611#endif 3612 /* Not all thinkpads have a hardware radio switch */ 3613 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3614 tp_features.hotkey_wlsw = 1; 3615 radiosw_state = !!status; 3616 pr_info("radio switch found; radios are %s\n", 3617 enabled(status, 0)); 3618 } 3619 if (tp_features.hotkey_wlsw) 3620 res = add_to_attr_set(hotkey_dev_attributes, 3621 &dev_attr_hotkey_radio_sw.attr); 3622 3623 res = hotkey_init_tablet_mode(); 3624 if (res < 0) 3625 goto err_exit; 3626 3627 tabletsw_state = res; 3628 3629 res = register_attr_set_with_sysfs(hotkey_dev_attributes, 3630 &tpacpi_pdev->dev.kobj); 3631 if (res) 3632 goto err_exit; 3633 3634 /* Set up key map */ 3635 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3636 ARRAY_SIZE(tpacpi_keymap_qtable)); 3637 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3638 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3639 "using keymap number %lu\n", keymap_id); 3640 3641 hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id], 3642 TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); 3643 if (!hotkey_keycode_map) { 3644 pr_err("failed to allocate memory for key map\n"); 3645 res = -ENOMEM; 3646 goto err_exit; 3647 } 3648 3649 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3650 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3651 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3652 tpacpi_inputdev->keycode = hotkey_keycode_map; 3653 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3654 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3655 input_set_capability(tpacpi_inputdev, EV_KEY, 3656 hotkey_keycode_map[i]); 3657 } else { 3658 if (i < sizeof(hotkey_reserved_mask)*8) 3659 hotkey_reserved_mask |= 1 << i; 3660 } 3661 } 3662 3663 if (tp_features.hotkey_wlsw) { 3664 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3665 input_report_switch(tpacpi_inputdev, 3666 SW_RFKILL_ALL, radiosw_state); 3667 } 3668 if (tp_features.hotkey_tablet) { 3669 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3670 input_report_switch(tpacpi_inputdev, 3671 SW_TABLET_MODE, tabletsw_state); 3672 } 3673 3674 /* Do not issue duplicate brightness change events to 3675 * userspace. tpacpi_detect_brightness_capabilities() must have 3676 * been called before this point */ 3677 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3678 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3679 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3680 3681 /* Disable brightness up/down on Lenovo thinkpads when 3682 * ACPI is handling them, otherwise it is plain impossible 3683 * for userspace to do something even remotely sane */ 3684 hotkey_reserved_mask |= 3685 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3686 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3687 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3688 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3689 } 3690 3691#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3692 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3693 & ~hotkey_all_mask 3694 & ~hotkey_reserved_mask; 3695 3696 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3697 "hotkey source mask 0x%08x, polling freq %u\n", 3698 hotkey_source_mask, hotkey_poll_freq); 3699#endif 3700 3701 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3702 "enabling firmware HKEY event interface...\n"); 3703 res = hotkey_status_set(true); 3704 if (res) { 3705 hotkey_exit(); 3706 return res; 3707 } 3708 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3709 | hotkey_driver_mask) 3710 & ~hotkey_source_mask); 3711 if (res < 0 && res != -ENXIO) { 3712 hotkey_exit(); 3713 return res; 3714 } 3715 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3716 & ~hotkey_reserved_mask; 3717 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3718 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3719 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3720 3721 tpacpi_inputdev->open = &hotkey_inputdev_open; 3722 tpacpi_inputdev->close = &hotkey_inputdev_close; 3723 3724 hotkey_poll_setup_safe(true); 3725 3726 return 0; 3727 3728err_exit: 3729 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3730 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 3731 &adaptive_kbd_attr_group); 3732 3733 hotkey_dev_attributes = NULL; 3734 3735 return (res < 0) ? res : 1; 3736} 3737 3738/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3739 * mode, Web conference mode, Function mode and Lay-flat mode. 3740 * We support Home mode and Function mode currently. 3741 * 3742 * Will consider support rest of modes in future. 3743 * 3744 */ 3745static const int adaptive_keyboard_modes[] = { 3746 HOME_MODE, 3747/* WEB_BROWSER_MODE = 2, 3748 WEB_CONFERENCE_MODE = 3, */ 3749 FUNCTION_MODE 3750}; 3751 3752#define DFR_CHANGE_ROW 0x101 3753#define DFR_SHOW_QUICKVIEW_ROW 0x102 3754#define FIRST_ADAPTIVE_KEY 0x103 3755 3756/* press Fn key a while second, it will switch to Function Mode. Then 3757 * release Fn key, previous mode be restored. 3758 */ 3759static bool adaptive_keyboard_mode_is_saved; 3760static int adaptive_keyboard_prev_mode; 3761 3762static int adaptive_keyboard_get_mode(void) 3763{ 3764 int mode = 0; 3765 3766 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3767 pr_err("Cannot read adaptive keyboard mode\n"); 3768 return -EIO; 3769 } 3770 3771 return mode; 3772} 3773 3774static int adaptive_keyboard_set_mode(int new_mode) 3775{ 3776 if (new_mode < 0 || 3777 new_mode > LAYFLAT_MODE) 3778 return -EINVAL; 3779 3780 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3781 pr_err("Cannot set adaptive keyboard mode\n"); 3782 return -EIO; 3783 } 3784 3785 return 0; 3786} 3787 3788static int adaptive_keyboard_get_next_mode(int mode) 3789{ 3790 size_t i; 3791 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3792 3793 for (i = 0; i <= max_mode; i++) { 3794 if (adaptive_keyboard_modes[i] == mode) 3795 break; 3796 } 3797 3798 if (i >= max_mode) 3799 i = 0; 3800 else 3801 i++; 3802 3803 return adaptive_keyboard_modes[i]; 3804} 3805 3806static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3807{ 3808 int current_mode = 0; 3809 int new_mode = 0; 3810 int keycode; 3811 3812 switch (scancode) { 3813 case DFR_CHANGE_ROW: 3814 if (adaptive_keyboard_mode_is_saved) { 3815 new_mode = adaptive_keyboard_prev_mode; 3816 adaptive_keyboard_mode_is_saved = false; 3817 } else { 3818 current_mode = adaptive_keyboard_get_mode(); 3819 if (current_mode < 0) 3820 return false; 3821 new_mode = adaptive_keyboard_get_next_mode( 3822 current_mode); 3823 } 3824 3825 if (adaptive_keyboard_set_mode(new_mode) < 0) 3826 return false; 3827 3828 return true; 3829 3830 case DFR_SHOW_QUICKVIEW_ROW: 3831 current_mode = adaptive_keyboard_get_mode(); 3832 if (current_mode < 0) 3833 return false; 3834 3835 adaptive_keyboard_prev_mode = current_mode; 3836 adaptive_keyboard_mode_is_saved = true; 3837 3838 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3839 return false; 3840 return true; 3841 3842 default: 3843 if (scancode < FIRST_ADAPTIVE_KEY || 3844 scancode >= FIRST_ADAPTIVE_KEY + 3845 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3846 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3847 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3848 scancode); 3849 return false; 3850 } 3851 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3852 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3853 if (keycode != KEY_RESERVED) { 3854 mutex_lock(&tpacpi_inputdev_send_mutex); 3855 3856 input_report_key(tpacpi_inputdev, keycode, 1); 3857 input_sync(tpacpi_inputdev); 3858 3859 input_report_key(tpacpi_inputdev, keycode, 0); 3860 input_sync(tpacpi_inputdev); 3861 3862 mutex_unlock(&tpacpi_inputdev_send_mutex); 3863 } 3864 return true; 3865 } 3866} 3867 3868static bool hotkey_notify_hotkey(const u32 hkey, 3869 bool *send_acpi_ev, 3870 bool *ignore_acpi_ev) 3871{ 3872 /* 0x1000-0x1FFF: key presses */ 3873 unsigned int scancode = hkey & 0xfff; 3874 *send_acpi_ev = true; 3875 *ignore_acpi_ev = false; 3876 3877 /* 3878 * Original events are in the 0x10XX range, the adaptive keyboard 3879 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3880 * models, additional keys are emitted through 0x13XX. 3881 */ 3882 switch ((hkey >> 8) & 0xf) { 3883 case 0: 3884 if (scancode > 0 && 3885 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3886 /* HKEY event 0x1001 is scancode 0x00 */ 3887 scancode--; 3888 if (!(hotkey_source_mask & (1 << scancode))) { 3889 tpacpi_input_send_key_masked(scancode); 3890 *send_acpi_ev = false; 3891 } else { 3892 *ignore_acpi_ev = true; 3893 } 3894 return true; 3895 } 3896 break; 3897 3898 case 1: 3899 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3900 3901 case 3: 3902 /* Extended keycodes start at 0x300 and our offset into the map 3903 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3904 * will be positive, but might not be in the correct range. 3905 */ 3906 scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3907 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3908 scancode < TPACPI_HOTKEY_MAP_LEN) { 3909 tpacpi_input_send_key(scancode); 3910 return true; 3911 } 3912 break; 3913 } 3914 3915 return false; 3916} 3917 3918static bool hotkey_notify_wakeup(const u32 hkey, 3919 bool *send_acpi_ev, 3920 bool *ignore_acpi_ev) 3921{ 3922 /* 0x2000-0x2FFF: Wakeup reason */ 3923 *send_acpi_ev = true; 3924 *ignore_acpi_ev = false; 3925 3926 switch (hkey) { 3927 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3928 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3929 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3930 *ignore_acpi_ev = true; 3931 break; 3932 3933 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3934 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3935 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3936 *ignore_acpi_ev = true; 3937 break; 3938 3939 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3940 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3941 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3942 /* how to auto-heal: */ 3943 /* 2313: woke up from S3, go to S4/S5 */ 3944 /* 2413: woke up from S4, go to S5 */ 3945 break; 3946 3947 default: 3948 return false; 3949 } 3950 3951 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3952 pr_info("woke up due to a hot-unplug request...\n"); 3953 hotkey_wakeup_reason_notify_change(); 3954 } 3955 return true; 3956} 3957 3958static bool hotkey_notify_dockevent(const u32 hkey, 3959 bool *send_acpi_ev, 3960 bool *ignore_acpi_ev) 3961{ 3962 /* 0x4000-0x4FFF: dock-related events */ 3963 *send_acpi_ev = true; 3964 *ignore_acpi_ev = false; 3965 3966 switch (hkey) { 3967 case TP_HKEY_EV_UNDOCK_ACK: 3968 /* ACPI undock operation completed after wakeup */ 3969 hotkey_autosleep_ack = 1; 3970 pr_info("undocked\n"); 3971 hotkey_wakeup_hotunplug_complete_notify_change(); 3972 return true; 3973 3974 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3975 pr_info("docked into hotplug port replicator\n"); 3976 return true; 3977 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3978 pr_info("undocked from hotplug port replicator\n"); 3979 return true; 3980 3981 default: 3982 return false; 3983 } 3984} 3985 3986static bool hotkey_notify_usrevent(const u32 hkey, 3987 bool *send_acpi_ev, 3988 bool *ignore_acpi_ev) 3989{ 3990 /* 0x5000-0x5FFF: human interface helpers */ 3991 *send_acpi_ev = true; 3992 *ignore_acpi_ev = false; 3993 3994 switch (hkey) { 3995 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 3996 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 3997 return true; 3998 3999 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 4000 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 4001 tpacpi_input_send_tabletsw(); 4002 hotkey_tablet_mode_notify_change(); 4003 *send_acpi_ev = false; 4004 return true; 4005 4006 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 4007 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 4008 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 4009 /* do not propagate these events */ 4010 *ignore_acpi_ev = true; 4011 return true; 4012 4013 default: 4014 return false; 4015 } 4016} 4017 4018static void thermal_dump_all_sensors(void); 4019 4020static bool hotkey_notify_6xxx(const u32 hkey, 4021 bool *send_acpi_ev, 4022 bool *ignore_acpi_ev) 4023{ 4024 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 4025 *send_acpi_ev = true; 4026 *ignore_acpi_ev = false; 4027 4028 switch (hkey) { 4029 case TP_HKEY_EV_THM_TABLE_CHANGED: 4030 pr_debug("EC reports: Thermal Table has changed\n"); 4031 /* recommended action: do nothing, we don't have 4032 * Lenovo ATM information */ 4033 return true; 4034 case TP_HKEY_EV_THM_CSM_COMPLETED: 4035 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 4036 /* Thermal event - pass on to event handler */ 4037 tpacpi_driver_event(hkey); 4038 return true; 4039 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 4040 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 4041 /* recommended action: do nothing, we don't have 4042 * Lenovo ATM information */ 4043 return true; 4044 case TP_HKEY_EV_ALARM_BAT_HOT: 4045 pr_crit("THERMAL ALARM: battery is too hot!\n"); 4046 /* recommended action: warn user through gui */ 4047 break; 4048 case TP_HKEY_EV_ALARM_BAT_XHOT: 4049 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 4050 /* recommended action: immediate sleep/hibernate */ 4051 break; 4052 case TP_HKEY_EV_ALARM_SENSOR_HOT: 4053 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 4054 /* recommended action: warn user through gui, that */ 4055 /* some internal component is too hot */ 4056 break; 4057 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 4058 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 4059 /* recommended action: immediate sleep/hibernate */ 4060 break; 4061 case TP_HKEY_EV_AC_CHANGED: 4062 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 4063 * AC status changed; can be triggered by plugging or 4064 * unplugging AC adapter, docking or undocking. */ 4065 4066 fallthrough; 4067 4068 case TP_HKEY_EV_KEY_NUMLOCK: 4069 case TP_HKEY_EV_KEY_FN: 4070 /* key press events, we just ignore them as long as the EC 4071 * is still reporting them in the normal keyboard stream */ 4072 *send_acpi_ev = false; 4073 *ignore_acpi_ev = true; 4074 return true; 4075 4076 case TP_HKEY_EV_KEY_FN_ESC: 4077 /* Get the media key status to foce the status LED to update */ 4078 acpi_evalf(hkey_handle, NULL, "GMKS", "v"); 4079 *send_acpi_ev = false; 4080 *ignore_acpi_ev = true; 4081 return true; 4082 4083 case TP_HKEY_EV_TABLET_CHANGED: 4084 tpacpi_input_send_tabletsw(); 4085 hotkey_tablet_mode_notify_change(); 4086 *send_acpi_ev = false; 4087 return true; 4088 4089 case TP_HKEY_EV_PALM_DETECTED: 4090 case TP_HKEY_EV_PALM_UNDETECTED: 4091 /* palm detected hovering the keyboard, forward to user-space 4092 * via netlink for consumption */ 4093 return true; 4094 4095 default: 4096 /* report simply as unknown, no sensor dump */ 4097 return false; 4098 } 4099 4100 thermal_dump_all_sensors(); 4101 return true; 4102} 4103 4104static void hotkey_notify(struct ibm_struct *ibm, u32 event) 4105{ 4106 u32 hkey; 4107 bool send_acpi_ev; 4108 bool ignore_acpi_ev; 4109 bool known_ev; 4110 4111 if (event != 0x80) { 4112 pr_err("unknown HKEY notification event %d\n", event); 4113 /* forward it to userspace, maybe it knows how to handle it */ 4114 acpi_bus_generate_netlink_event( 4115 ibm->acpi->device->pnp.device_class, 4116 dev_name(&ibm->acpi->device->dev), 4117 event, 0); 4118 return; 4119 } 4120 4121 while (1) { 4122 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4123 pr_err("failed to retrieve HKEY event\n"); 4124 return; 4125 } 4126 4127 if (hkey == 0) { 4128 /* queue empty */ 4129 return; 4130 } 4131 4132 send_acpi_ev = true; 4133 ignore_acpi_ev = false; 4134 4135 switch (hkey >> 12) { 4136 case 1: 4137 /* 0x1000-0x1FFF: key presses */ 4138 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4139 &ignore_acpi_ev); 4140 break; 4141 case 2: 4142 /* 0x2000-0x2FFF: Wakeup reason */ 4143 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4144 &ignore_acpi_ev); 4145 break; 4146 case 3: 4147 /* 0x3000-0x3FFF: bay-related wakeups */ 4148 switch (hkey) { 4149 case TP_HKEY_EV_BAYEJ_ACK: 4150 hotkey_autosleep_ack = 1; 4151 pr_info("bay ejected\n"); 4152 hotkey_wakeup_hotunplug_complete_notify_change(); 4153 known_ev = true; 4154 break; 4155 case TP_HKEY_EV_OPTDRV_EJ: 4156 /* FIXME: kick libata if SATA link offline */ 4157 known_ev = true; 4158 break; 4159 default: 4160 known_ev = false; 4161 } 4162 break; 4163 case 4: 4164 /* 0x4000-0x4FFF: dock-related events */ 4165 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4166 &ignore_acpi_ev); 4167 break; 4168 case 5: 4169 /* 0x5000-0x5FFF: human interface helpers */ 4170 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4171 &ignore_acpi_ev); 4172 break; 4173 case 6: 4174 /* 0x6000-0x6FFF: thermal alarms/notices and 4175 * keyboard events */ 4176 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4177 &ignore_acpi_ev); 4178 break; 4179 case 7: 4180 /* 0x7000-0x7FFF: misc */ 4181 if (tp_features.hotkey_wlsw && 4182 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4183 tpacpi_send_radiosw_update(); 4184 send_acpi_ev = 0; 4185 known_ev = true; 4186 break; 4187 } 4188 fallthrough; /* to default */ 4189 default: 4190 known_ev = false; 4191 } 4192 if (!known_ev) { 4193 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4194 pr_notice("please report the conditions when this event happened to %s\n", 4195 TPACPI_MAIL); 4196 } 4197 4198 /* netlink events */ 4199 if (!ignore_acpi_ev && send_acpi_ev) { 4200 acpi_bus_generate_netlink_event( 4201 ibm->acpi->device->pnp.device_class, 4202 dev_name(&ibm->acpi->device->dev), 4203 event, hkey); 4204 } 4205 } 4206} 4207 4208static void hotkey_suspend(void) 4209{ 4210 /* Do these on suspend, we get the events on early resume! */ 4211 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4212 hotkey_autosleep_ack = 0; 4213 4214 /* save previous mode of adaptive keyboard of X1 Carbon */ 4215 if (tp_features.has_adaptive_kbd) { 4216 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4217 "GTRW", "dd", 0)) { 4218 pr_err("Cannot read adaptive keyboard mode.\n"); 4219 } 4220 } 4221} 4222 4223static void hotkey_resume(void) 4224{ 4225 tpacpi_disable_brightness_delay(); 4226 4227 if (hotkey_status_set(true) < 0 || 4228 hotkey_mask_set(hotkey_acpi_mask) < 0) 4229 pr_err("error while attempting to reset the event firmware interface\n"); 4230 4231 tpacpi_send_radiosw_update(); 4232 tpacpi_input_send_tabletsw(); 4233 hotkey_tablet_mode_notify_change(); 4234 hotkey_wakeup_reason_notify_change(); 4235 hotkey_wakeup_hotunplug_complete_notify_change(); 4236 hotkey_poll_setup_safe(false); 4237 4238 /* restore previous mode of adapive keyboard of X1 Carbon */ 4239 if (tp_features.has_adaptive_kbd) { 4240 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4241 adaptive_keyboard_prev_mode)) { 4242 pr_err("Cannot set adaptive keyboard mode.\n"); 4243 } 4244 } 4245} 4246 4247/* procfs -------------------------------------------------------------- */ 4248static int hotkey_read(struct seq_file *m) 4249{ 4250 int res, status; 4251 4252 if (!tp_features.hotkey) { 4253 seq_printf(m, "status:\t\tnot supported\n"); 4254 return 0; 4255 } 4256 4257 if (mutex_lock_killable(&hotkey_mutex)) 4258 return -ERESTARTSYS; 4259 res = hotkey_status_get(&status); 4260 if (!res) 4261 res = hotkey_mask_get(); 4262 mutex_unlock(&hotkey_mutex); 4263 if (res) 4264 return res; 4265 4266 seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); 4267 if (hotkey_all_mask) { 4268 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4269 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4270 } else { 4271 seq_printf(m, "mask:\t\tnot supported\n"); 4272 seq_printf(m, "commands:\tenable, disable, reset\n"); 4273 } 4274 4275 return 0; 4276} 4277 4278static void hotkey_enabledisable_warn(bool enable) 4279{ 4280 tpacpi_log_usertask("procfs hotkey enable/disable"); 4281 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4282 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4283 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4284} 4285 4286static int hotkey_write(char *buf) 4287{ 4288 int res; 4289 u32 mask; 4290 char *cmd; 4291 4292 if (!tp_features.hotkey) 4293 return -ENODEV; 4294 4295 if (mutex_lock_killable(&hotkey_mutex)) 4296 return -ERESTARTSYS; 4297 4298 mask = hotkey_user_mask; 4299 4300 res = 0; 4301 while ((cmd = strsep(&buf, ","))) { 4302 if (strlencmp(cmd, "enable") == 0) { 4303 hotkey_enabledisable_warn(1); 4304 } else if (strlencmp(cmd, "disable") == 0) { 4305 hotkey_enabledisable_warn(0); 4306 res = -EPERM; 4307 } else if (strlencmp(cmd, "reset") == 0) { 4308 mask = (hotkey_all_mask | hotkey_source_mask) 4309 & ~hotkey_reserved_mask; 4310 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4311 /* mask set */ 4312 } else if (sscanf(cmd, "%x", &mask) == 1) { 4313 /* mask set */ 4314 } else { 4315 res = -EINVAL; 4316 goto errexit; 4317 } 4318 } 4319 4320 if (!res) { 4321 tpacpi_disclose_usertask("procfs hotkey", 4322 "set mask to 0x%08x\n", mask); 4323 res = hotkey_user_mask_set(mask); 4324 } 4325 4326errexit: 4327 mutex_unlock(&hotkey_mutex); 4328 return res; 4329} 4330 4331static const struct acpi_device_id ibm_htk_device_ids[] = { 4332 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4333 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4334 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4335 {"", 0}, 4336}; 4337 4338static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4339 .hid = ibm_htk_device_ids, 4340 .notify = hotkey_notify, 4341 .handle = &hkey_handle, 4342 .type = ACPI_DEVICE_NOTIFY, 4343}; 4344 4345static struct ibm_struct hotkey_driver_data = { 4346 .name = "hotkey", 4347 .read = hotkey_read, 4348 .write = hotkey_write, 4349 .exit = hotkey_exit, 4350 .resume = hotkey_resume, 4351 .suspend = hotkey_suspend, 4352 .acpi = &ibm_hotkey_acpidriver, 4353}; 4354 4355/************************************************************************* 4356 * Bluetooth subdriver 4357 */ 4358 4359enum { 4360 /* ACPI GBDC/SBDC bits */ 4361 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4362 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4363 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4364 0 = disable, 1 = enable */ 4365}; 4366 4367enum { 4368 /* ACPI \BLTH commands */ 4369 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4370 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4371 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4372 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4373 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4374}; 4375 4376#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4377 4378static int bluetooth_get_status(void) 4379{ 4380 int status; 4381 4382#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4383 if (dbg_bluetoothemul) 4384 return (tpacpi_bluetooth_emulstate) ? 4385 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4386#endif 4387 4388 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4389 return -EIO; 4390 4391 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4392 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4393} 4394 4395static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4396{ 4397 int status; 4398 4399 vdbg_printk(TPACPI_DBG_RFKILL, 4400 "will attempt to %s bluetooth\n", 4401 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4402 4403#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4404 if (dbg_bluetoothemul) { 4405 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4406 return 0; 4407 } 4408#endif 4409 4410 if (state == TPACPI_RFK_RADIO_ON) 4411 status = TP_ACPI_BLUETOOTH_RADIOSSW 4412 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4413 else 4414 status = 0; 4415 4416 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4417 return -EIO; 4418 4419 return 0; 4420} 4421 4422/* sysfs bluetooth enable ---------------------------------------------- */ 4423static ssize_t bluetooth_enable_show(struct device *dev, 4424 struct device_attribute *attr, 4425 char *buf) 4426{ 4427 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4428 attr, buf); 4429} 4430 4431static ssize_t bluetooth_enable_store(struct device *dev, 4432 struct device_attribute *attr, 4433 const char *buf, size_t count) 4434{ 4435 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4436 attr, buf, count); 4437} 4438 4439static DEVICE_ATTR_RW(bluetooth_enable); 4440 4441/* --------------------------------------------------------------------- */ 4442 4443static struct attribute *bluetooth_attributes[] = { 4444 &dev_attr_bluetooth_enable.attr, 4445 NULL 4446}; 4447 4448static const struct attribute_group bluetooth_attr_group = { 4449 .attrs = bluetooth_attributes, 4450}; 4451 4452static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4453 .get_status = bluetooth_get_status, 4454 .set_status = bluetooth_set_status, 4455}; 4456 4457static void bluetooth_shutdown(void) 4458{ 4459 /* Order firmware to save current state to NVRAM */ 4460 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4461 TP_ACPI_BLTH_SAVE_STATE)) 4462 pr_notice("failed to save bluetooth state to NVRAM\n"); 4463 else 4464 vdbg_printk(TPACPI_DBG_RFKILL, 4465 "bluetooth state saved to NVRAM\n"); 4466} 4467 4468static void bluetooth_exit(void) 4469{ 4470 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4471 &bluetooth_attr_group); 4472 4473 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4474 4475 bluetooth_shutdown(); 4476} 4477 4478static const struct dmi_system_id bt_fwbug_list[] __initconst = { 4479 { 4480 .ident = "ThinkPad E485", 4481 .matches = { 4482 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4483 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4484 }, 4485 }, 4486 { 4487 .ident = "ThinkPad E585", 4488 .matches = { 4489 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4490 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4491 }, 4492 }, 4493 { 4494 .ident = "ThinkPad A285 - 20MW", 4495 .matches = { 4496 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4497 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4498 }, 4499 }, 4500 { 4501 .ident = "ThinkPad A285 - 20MX", 4502 .matches = { 4503 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4504 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4505 }, 4506 }, 4507 { 4508 .ident = "ThinkPad A485 - 20MU", 4509 .matches = { 4510 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4511 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4512 }, 4513 }, 4514 { 4515 .ident = "ThinkPad A485 - 20MV", 4516 .matches = { 4517 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4518 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4519 }, 4520 }, 4521 {} 4522}; 4523 4524static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4525 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4526 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4527 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4528 {} 4529}; 4530 4531 4532static int __init have_bt_fwbug(void) 4533{ 4534 /* 4535 * Some AMD based ThinkPads have a firmware bug that calling 4536 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4537 */ 4538 if (dmi_check_system(bt_fwbug_list) && pci_dev_present(fwbug_cards_ids)) { 4539 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4540 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4541 return 1; 4542 } else 4543 return 0; 4544} 4545 4546static int __init bluetooth_init(struct ibm_init_struct *iibm) 4547{ 4548 int res; 4549 int status = 0; 4550 4551 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4552 "initializing bluetooth subdriver\n"); 4553 4554 TPACPI_ACPIHANDLE_INIT(hkey); 4555 4556 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4557 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4558 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4559 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4560 4561 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4562 "bluetooth is %s, status 0x%02x\n", 4563 str_supported(tp_features.bluetooth), 4564 status); 4565 4566#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4567 if (dbg_bluetoothemul) { 4568 tp_features.bluetooth = 1; 4569 pr_info("bluetooth switch emulation enabled\n"); 4570 } else 4571#endif 4572 if (tp_features.bluetooth && 4573 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4574 /* no bluetooth hardware present in system */ 4575 tp_features.bluetooth = 0; 4576 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4577 "bluetooth hardware not installed\n"); 4578 } 4579 4580 if (!tp_features.bluetooth) 4581 return 1; 4582 4583 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4584 &bluetooth_tprfk_ops, 4585 RFKILL_TYPE_BLUETOOTH, 4586 TPACPI_RFK_BLUETOOTH_SW_NAME, 4587 true); 4588 if (res) 4589 return res; 4590 4591 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4592 &bluetooth_attr_group); 4593 if (res) { 4594 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4595 return res; 4596 } 4597 4598 return 0; 4599} 4600 4601/* procfs -------------------------------------------------------------- */ 4602static int bluetooth_read(struct seq_file *m) 4603{ 4604 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4605} 4606 4607static int bluetooth_write(char *buf) 4608{ 4609 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4610} 4611 4612static struct ibm_struct bluetooth_driver_data = { 4613 .name = "bluetooth", 4614 .read = bluetooth_read, 4615 .write = bluetooth_write, 4616 .exit = bluetooth_exit, 4617 .shutdown = bluetooth_shutdown, 4618}; 4619 4620/************************************************************************* 4621 * Wan subdriver 4622 */ 4623 4624enum { 4625 /* ACPI GWAN/SWAN bits */ 4626 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4627 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4628 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4629 0 = disable, 1 = enable */ 4630}; 4631 4632#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4633 4634static int wan_get_status(void) 4635{ 4636 int status; 4637 4638#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4639 if (dbg_wwanemul) 4640 return (tpacpi_wwan_emulstate) ? 4641 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4642#endif 4643 4644 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4645 return -EIO; 4646 4647 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4648 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4649} 4650 4651static int wan_set_status(enum tpacpi_rfkill_state state) 4652{ 4653 int status; 4654 4655 vdbg_printk(TPACPI_DBG_RFKILL, 4656 "will attempt to %s wwan\n", 4657 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4658 4659#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4660 if (dbg_wwanemul) { 4661 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4662 return 0; 4663 } 4664#endif 4665 4666 if (state == TPACPI_RFK_RADIO_ON) 4667 status = TP_ACPI_WANCARD_RADIOSSW 4668 | TP_ACPI_WANCARD_RESUMECTRL; 4669 else 4670 status = 0; 4671 4672 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4673 return -EIO; 4674 4675 return 0; 4676} 4677 4678/* sysfs wan enable ---------------------------------------------------- */ 4679static ssize_t wan_enable_show(struct device *dev, 4680 struct device_attribute *attr, 4681 char *buf) 4682{ 4683 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4684 attr, buf); 4685} 4686 4687static ssize_t wan_enable_store(struct device *dev, 4688 struct device_attribute *attr, 4689 const char *buf, size_t count) 4690{ 4691 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4692 attr, buf, count); 4693} 4694 4695static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4696 wan_enable_show, wan_enable_store); 4697 4698/* --------------------------------------------------------------------- */ 4699 4700static struct attribute *wan_attributes[] = { 4701 &dev_attr_wwan_enable.attr, 4702 NULL 4703}; 4704 4705static const struct attribute_group wan_attr_group = { 4706 .attrs = wan_attributes, 4707}; 4708 4709static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4710 .get_status = wan_get_status, 4711 .set_status = wan_set_status, 4712}; 4713 4714static void wan_shutdown(void) 4715{ 4716 /* Order firmware to save current state to NVRAM */ 4717 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4718 TP_ACPI_WGSV_SAVE_STATE)) 4719 pr_notice("failed to save WWAN state to NVRAM\n"); 4720 else 4721 vdbg_printk(TPACPI_DBG_RFKILL, 4722 "WWAN state saved to NVRAM\n"); 4723} 4724 4725static void wan_exit(void) 4726{ 4727 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4728 &wan_attr_group); 4729 4730 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4731 4732 wan_shutdown(); 4733} 4734 4735static int __init wan_init(struct ibm_init_struct *iibm) 4736{ 4737 int res; 4738 int status = 0; 4739 4740 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4741 "initializing wan subdriver\n"); 4742 4743 TPACPI_ACPIHANDLE_INIT(hkey); 4744 4745 tp_features.wan = hkey_handle && 4746 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4747 4748 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4749 "wan is %s, status 0x%02x\n", 4750 str_supported(tp_features.wan), 4751 status); 4752 4753#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4754 if (dbg_wwanemul) { 4755 tp_features.wan = 1; 4756 pr_info("wwan switch emulation enabled\n"); 4757 } else 4758#endif 4759 if (tp_features.wan && 4760 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4761 /* no wan hardware present in system */ 4762 tp_features.wan = 0; 4763 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4764 "wan hardware not installed\n"); 4765 } 4766 4767 if (!tp_features.wan) 4768 return 1; 4769 4770 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4771 &wan_tprfk_ops, 4772 RFKILL_TYPE_WWAN, 4773 TPACPI_RFK_WWAN_SW_NAME, 4774 true); 4775 if (res) 4776 return res; 4777 4778 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4779 &wan_attr_group); 4780 4781 if (res) { 4782 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4783 return res; 4784 } 4785 4786 return 0; 4787} 4788 4789/* procfs -------------------------------------------------------------- */ 4790static int wan_read(struct seq_file *m) 4791{ 4792 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4793} 4794 4795static int wan_write(char *buf) 4796{ 4797 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4798} 4799 4800static struct ibm_struct wan_driver_data = { 4801 .name = "wan", 4802 .read = wan_read, 4803 .write = wan_write, 4804 .exit = wan_exit, 4805 .shutdown = wan_shutdown, 4806}; 4807 4808/************************************************************************* 4809 * UWB subdriver 4810 */ 4811 4812enum { 4813 /* ACPI GUWB/SUWB bits */ 4814 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4815 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4816}; 4817 4818#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4819 4820static int uwb_get_status(void) 4821{ 4822 int status; 4823 4824#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4825 if (dbg_uwbemul) 4826 return (tpacpi_uwb_emulstate) ? 4827 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4828#endif 4829 4830 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4831 return -EIO; 4832 4833 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4834 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4835} 4836 4837static int uwb_set_status(enum tpacpi_rfkill_state state) 4838{ 4839 int status; 4840 4841 vdbg_printk(TPACPI_DBG_RFKILL, 4842 "will attempt to %s UWB\n", 4843 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4844 4845#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4846 if (dbg_uwbemul) { 4847 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4848 return 0; 4849 } 4850#endif 4851 4852 if (state == TPACPI_RFK_RADIO_ON) 4853 status = TP_ACPI_UWB_RADIOSSW; 4854 else 4855 status = 0; 4856 4857 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4858 return -EIO; 4859 4860 return 0; 4861} 4862 4863/* --------------------------------------------------------------------- */ 4864 4865static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4866 .get_status = uwb_get_status, 4867 .set_status = uwb_set_status, 4868}; 4869 4870static void uwb_exit(void) 4871{ 4872 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4873} 4874 4875static int __init uwb_init(struct ibm_init_struct *iibm) 4876{ 4877 int res; 4878 int status = 0; 4879 4880 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4881 "initializing uwb subdriver\n"); 4882 4883 TPACPI_ACPIHANDLE_INIT(hkey); 4884 4885 tp_features.uwb = hkey_handle && 4886 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4887 4888 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4889 "uwb is %s, status 0x%02x\n", 4890 str_supported(tp_features.uwb), 4891 status); 4892 4893#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4894 if (dbg_uwbemul) { 4895 tp_features.uwb = 1; 4896 pr_info("uwb switch emulation enabled\n"); 4897 } else 4898#endif 4899 if (tp_features.uwb && 4900 !(status & TP_ACPI_UWB_HWPRESENT)) { 4901 /* no uwb hardware present in system */ 4902 tp_features.uwb = 0; 4903 dbg_printk(TPACPI_DBG_INIT, 4904 "uwb hardware not installed\n"); 4905 } 4906 4907 if (!tp_features.uwb) 4908 return 1; 4909 4910 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4911 &uwb_tprfk_ops, 4912 RFKILL_TYPE_UWB, 4913 TPACPI_RFK_UWB_SW_NAME, 4914 false); 4915 return res; 4916} 4917 4918static struct ibm_struct uwb_driver_data = { 4919 .name = "uwb", 4920 .exit = uwb_exit, 4921 .flags.experimental = 1, 4922}; 4923 4924/************************************************************************* 4925 * Video subdriver 4926 */ 4927 4928#ifdef CONFIG_THINKPAD_ACPI_VIDEO 4929 4930enum video_access_mode { 4931 TPACPI_VIDEO_NONE = 0, 4932 TPACPI_VIDEO_570, /* 570 */ 4933 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4934 TPACPI_VIDEO_NEW, /* all others */ 4935}; 4936 4937enum { /* video status flags, based on VIDEO_570 */ 4938 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4939 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4940 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4941}; 4942 4943enum { /* TPACPI_VIDEO_570 constants */ 4944 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4945 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4946 * video_status_flags */ 4947 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4948 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4949}; 4950 4951static enum video_access_mode video_supported; 4952static int video_orig_autosw; 4953 4954static int video_autosw_get(void); 4955static int video_autosw_set(int enable); 4956 4957TPACPI_HANDLE(vid, root, 4958 "\\_SB.PCI.AGP.VGA", /* 570 */ 4959 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4960 "\\_SB.PCI0.VID0", /* 770e */ 4961 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4962 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4963 "\\_SB.PCI0.AGP.VID", /* all others */ 4964 ); /* R30, R31 */ 4965 4966TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4967 4968static int __init video_init(struct ibm_init_struct *iibm) 4969{ 4970 int ivga; 4971 4972 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4973 4974 TPACPI_ACPIHANDLE_INIT(vid); 4975 if (tpacpi_is_ibm()) 4976 TPACPI_ACPIHANDLE_INIT(vid2); 4977 4978 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4979 /* G41, assume IVGA doesn't change */ 4980 vid_handle = vid2_handle; 4981 4982 if (!vid_handle) 4983 /* video switching not supported on R30, R31 */ 4984 video_supported = TPACPI_VIDEO_NONE; 4985 else if (tpacpi_is_ibm() && 4986 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4987 /* 570 */ 4988 video_supported = TPACPI_VIDEO_570; 4989 else if (tpacpi_is_ibm() && 4990 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4991 /* 600e/x, 770e, 770x */ 4992 video_supported = TPACPI_VIDEO_770; 4993 else 4994 /* all others */ 4995 video_supported = TPACPI_VIDEO_NEW; 4996 4997 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4998 str_supported(video_supported != TPACPI_VIDEO_NONE), 4999 video_supported); 5000 5001 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1; 5002} 5003 5004static void video_exit(void) 5005{ 5006 dbg_printk(TPACPI_DBG_EXIT, 5007 "restoring original video autoswitch mode\n"); 5008 if (video_autosw_set(video_orig_autosw)) 5009 pr_err("error while trying to restore original video autoswitch mode\n"); 5010} 5011 5012static int video_outputsw_get(void) 5013{ 5014 int status = 0; 5015 int i; 5016 5017 switch (video_supported) { 5018 case TPACPI_VIDEO_570: 5019 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 5020 TP_ACPI_VIDEO_570_PHSCMD)) 5021 return -EIO; 5022 status = i & TP_ACPI_VIDEO_570_PHSMASK; 5023 break; 5024 case TPACPI_VIDEO_770: 5025 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 5026 return -EIO; 5027 if (i) 5028 status |= TP_ACPI_VIDEO_S_LCD; 5029 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 5030 return -EIO; 5031 if (i) 5032 status |= TP_ACPI_VIDEO_S_CRT; 5033 break; 5034 case TPACPI_VIDEO_NEW: 5035 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 5036 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 5037 return -EIO; 5038 if (i) 5039 status |= TP_ACPI_VIDEO_S_CRT; 5040 5041 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 5042 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 5043 return -EIO; 5044 if (i) 5045 status |= TP_ACPI_VIDEO_S_LCD; 5046 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 5047 return -EIO; 5048 if (i) 5049 status |= TP_ACPI_VIDEO_S_DVI; 5050 break; 5051 default: 5052 return -ENOSYS; 5053 } 5054 5055 return status; 5056} 5057 5058static int video_outputsw_set(int status) 5059{ 5060 int autosw; 5061 int res = 0; 5062 5063 switch (video_supported) { 5064 case TPACPI_VIDEO_570: 5065 res = acpi_evalf(NULL, NULL, 5066 "\\_SB.PHS2", "vdd", 5067 TP_ACPI_VIDEO_570_PHS2CMD, 5068 status | TP_ACPI_VIDEO_570_PHS2SET); 5069 break; 5070 case TPACPI_VIDEO_770: 5071 autosw = video_autosw_get(); 5072 if (autosw < 0) 5073 return autosw; 5074 5075 res = video_autosw_set(1); 5076 if (res) 5077 return res; 5078 res = acpi_evalf(vid_handle, NULL, 5079 "ASWT", "vdd", status * 0x100, 0); 5080 if (!autosw && video_autosw_set(autosw)) { 5081 pr_err("video auto-switch left enabled due to error\n"); 5082 return -EIO; 5083 } 5084 break; 5085 case TPACPI_VIDEO_NEW: 5086 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 5087 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 5088 break; 5089 default: 5090 return -ENOSYS; 5091 } 5092 5093 return (res) ? 0 : -EIO; 5094} 5095 5096static int video_autosw_get(void) 5097{ 5098 int autosw = 0; 5099 5100 switch (video_supported) { 5101 case TPACPI_VIDEO_570: 5102 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 5103 return -EIO; 5104 break; 5105 case TPACPI_VIDEO_770: 5106 case TPACPI_VIDEO_NEW: 5107 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 5108 return -EIO; 5109 break; 5110 default: 5111 return -ENOSYS; 5112 } 5113 5114 return autosw & 1; 5115} 5116 5117static int video_autosw_set(int enable) 5118{ 5119 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 5120 return -EIO; 5121 return 0; 5122} 5123 5124static int video_outputsw_cycle(void) 5125{ 5126 int autosw = video_autosw_get(); 5127 int res; 5128 5129 if (autosw < 0) 5130 return autosw; 5131 5132 switch (video_supported) { 5133 case TPACPI_VIDEO_570: 5134 res = video_autosw_set(1); 5135 if (res) 5136 return res; 5137 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5138 break; 5139 case TPACPI_VIDEO_770: 5140 case TPACPI_VIDEO_NEW: 5141 res = video_autosw_set(1); 5142 if (res) 5143 return res; 5144 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5145 break; 5146 default: 5147 return -ENOSYS; 5148 } 5149 if (!autosw && video_autosw_set(autosw)) { 5150 pr_err("video auto-switch left enabled due to error\n"); 5151 return -EIO; 5152 } 5153 5154 return (res) ? 0 : -EIO; 5155} 5156 5157static int video_expand_toggle(void) 5158{ 5159 switch (video_supported) { 5160 case TPACPI_VIDEO_570: 5161 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5162 0 : -EIO; 5163 case TPACPI_VIDEO_770: 5164 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5165 0 : -EIO; 5166 case TPACPI_VIDEO_NEW: 5167 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5168 0 : -EIO; 5169 default: 5170 return -ENOSYS; 5171 } 5172 /* not reached */ 5173} 5174 5175static int video_read(struct seq_file *m) 5176{ 5177 int status, autosw; 5178 5179 if (video_supported == TPACPI_VIDEO_NONE) { 5180 seq_printf(m, "status:\t\tnot supported\n"); 5181 return 0; 5182 } 5183 5184 /* Even reads can crash X.org, so... */ 5185 if (!capable(CAP_SYS_ADMIN)) 5186 return -EPERM; 5187 5188 status = video_outputsw_get(); 5189 if (status < 0) 5190 return status; 5191 5192 autosw = video_autosw_get(); 5193 if (autosw < 0) 5194 return autosw; 5195 5196 seq_printf(m, "status:\t\tsupported\n"); 5197 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); 5198 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); 5199 if (video_supported == TPACPI_VIDEO_NEW) 5200 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); 5201 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); 5202 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5203 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5204 if (video_supported == TPACPI_VIDEO_NEW) 5205 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5206 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5207 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5208 5209 return 0; 5210} 5211 5212static int video_write(char *buf) 5213{ 5214 char *cmd; 5215 int enable, disable, status; 5216 int res; 5217 5218 if (video_supported == TPACPI_VIDEO_NONE) 5219 return -ENODEV; 5220 5221 /* Even reads can crash X.org, let alone writes... */ 5222 if (!capable(CAP_SYS_ADMIN)) 5223 return -EPERM; 5224 5225 enable = 0; 5226 disable = 0; 5227 5228 while ((cmd = strsep(&buf, ","))) { 5229 if (strlencmp(cmd, "lcd_enable") == 0) { 5230 enable |= TP_ACPI_VIDEO_S_LCD; 5231 } else if (strlencmp(cmd, "lcd_disable") == 0) { 5232 disable |= TP_ACPI_VIDEO_S_LCD; 5233 } else if (strlencmp(cmd, "crt_enable") == 0) { 5234 enable |= TP_ACPI_VIDEO_S_CRT; 5235 } else if (strlencmp(cmd, "crt_disable") == 0) { 5236 disable |= TP_ACPI_VIDEO_S_CRT; 5237 } else if (video_supported == TPACPI_VIDEO_NEW && 5238 strlencmp(cmd, "dvi_enable") == 0) { 5239 enable |= TP_ACPI_VIDEO_S_DVI; 5240 } else if (video_supported == TPACPI_VIDEO_NEW && 5241 strlencmp(cmd, "dvi_disable") == 0) { 5242 disable |= TP_ACPI_VIDEO_S_DVI; 5243 } else if (strlencmp(cmd, "auto_enable") == 0) { 5244 res = video_autosw_set(1); 5245 if (res) 5246 return res; 5247 } else if (strlencmp(cmd, "auto_disable") == 0) { 5248 res = video_autosw_set(0); 5249 if (res) 5250 return res; 5251 } else if (strlencmp(cmd, "video_switch") == 0) { 5252 res = video_outputsw_cycle(); 5253 if (res) 5254 return res; 5255 } else if (strlencmp(cmd, "expand_toggle") == 0) { 5256 res = video_expand_toggle(); 5257 if (res) 5258 return res; 5259 } else 5260 return -EINVAL; 5261 } 5262 5263 if (enable || disable) { 5264 status = video_outputsw_get(); 5265 if (status < 0) 5266 return status; 5267 res = video_outputsw_set((status & ~disable) | enable); 5268 if (res) 5269 return res; 5270 } 5271 5272 return 0; 5273} 5274 5275static struct ibm_struct video_driver_data = { 5276 .name = "video", 5277 .read = video_read, 5278 .write = video_write, 5279 .exit = video_exit, 5280}; 5281 5282#endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5283 5284/************************************************************************* 5285 * Keyboard backlight subdriver 5286 */ 5287 5288static enum led_brightness kbdlight_brightness; 5289static DEFINE_MUTEX(kbdlight_mutex); 5290 5291static int kbdlight_set_level(int level) 5292{ 5293 int ret = 0; 5294 5295 if (!hkey_handle) 5296 return -ENXIO; 5297 5298 mutex_lock(&kbdlight_mutex); 5299 5300 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5301 ret = -EIO; 5302 else 5303 kbdlight_brightness = level; 5304 5305 mutex_unlock(&kbdlight_mutex); 5306 5307 return ret; 5308} 5309 5310static int kbdlight_get_level(void) 5311{ 5312 int status = 0; 5313 5314 if (!hkey_handle) 5315 return -ENXIO; 5316 5317 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5318 return -EIO; 5319 5320 if (status < 0) 5321 return status; 5322 5323 return status & 0x3; 5324} 5325 5326static bool kbdlight_is_supported(void) 5327{ 5328 int status = 0; 5329 5330 if (!hkey_handle) 5331 return false; 5332 5333 if (!acpi_has_method(hkey_handle, "MLCG")) { 5334 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5335 return false; 5336 } 5337 5338 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5339 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5340 return false; 5341 } 5342 5343 if (status < 0) { 5344 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5345 return false; 5346 } 5347 5348 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5349 /* 5350 * Guessed test for keyboard backlight: 5351 * 5352 * Machines with backlight keyboard return: 5353 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5354 * b110100010010000000XX - ThinkPad x230 5355 * b010100000010000000XX - ThinkPad x240 5356 * b010100000010000000XX - ThinkPad W541 5357 * (XX is current backlight level) 5358 * 5359 * Machines without backlight keyboard return: 5360 * b10100001000000000000 - ThinkPad x230 5361 * b10110001000000000000 - ThinkPad E430 5362 * b00000000000000000000 - ThinkPad E450 5363 * 5364 * Candidate BITs for detection test (XOR): 5365 * b01000000001000000000 5366 * ^ 5367 */ 5368 return status & BIT(9); 5369} 5370 5371static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5372 enum led_brightness brightness) 5373{ 5374 return kbdlight_set_level(brightness); 5375} 5376 5377static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5378{ 5379 int level; 5380 5381 level = kbdlight_get_level(); 5382 if (level < 0) 5383 return 0; 5384 5385 return level; 5386} 5387 5388static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5389 .led_classdev = { 5390 .name = "tpacpi::kbd_backlight", 5391 .max_brightness = 2, 5392 .flags = LED_BRIGHT_HW_CHANGED, 5393 .brightness_set_blocking = &kbdlight_sysfs_set, 5394 .brightness_get = &kbdlight_sysfs_get, 5395 } 5396}; 5397 5398static int __init kbdlight_init(struct ibm_init_struct *iibm) 5399{ 5400 int rc; 5401 5402 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5403 5404 TPACPI_ACPIHANDLE_INIT(hkey); 5405 5406 if (!kbdlight_is_supported()) { 5407 tp_features.kbdlight = 0; 5408 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5409 return 1; 5410 } 5411 5412 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5413 tp_features.kbdlight = 1; 5414 5415 rc = led_classdev_register(&tpacpi_pdev->dev, 5416 &tpacpi_led_kbdlight.led_classdev); 5417 if (rc < 0) { 5418 tp_features.kbdlight = 0; 5419 return rc; 5420 } 5421 5422 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5423 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5424 return 0; 5425} 5426 5427static void kbdlight_exit(void) 5428{ 5429 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5430} 5431 5432static int kbdlight_set_level_and_update(int level) 5433{ 5434 int ret; 5435 struct led_classdev *led_cdev; 5436 5437 ret = kbdlight_set_level(level); 5438 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5439 5440 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5441 led_cdev->brightness = level; 5442 5443 return ret; 5444} 5445 5446static int kbdlight_read(struct seq_file *m) 5447{ 5448 int level; 5449 5450 if (!tp_features.kbdlight) { 5451 seq_printf(m, "status:\t\tnot supported\n"); 5452 } else { 5453 level = kbdlight_get_level(); 5454 if (level < 0) 5455 seq_printf(m, "status:\t\terror %d\n", level); 5456 else 5457 seq_printf(m, "status:\t\t%d\n", level); 5458 seq_printf(m, "commands:\t0, 1, 2\n"); 5459 } 5460 5461 return 0; 5462} 5463 5464static int kbdlight_write(char *buf) 5465{ 5466 char *cmd; 5467 int res, level = -EINVAL; 5468 5469 if (!tp_features.kbdlight) 5470 return -ENODEV; 5471 5472 while ((cmd = strsep(&buf, ","))) { 5473 res = kstrtoint(cmd, 10, &level); 5474 if (res < 0) 5475 return res; 5476 } 5477 5478 if (level >= 3 || level < 0) 5479 return -EINVAL; 5480 5481 return kbdlight_set_level_and_update(level); 5482} 5483 5484static void kbdlight_suspend(void) 5485{ 5486 struct led_classdev *led_cdev; 5487 5488 if (!tp_features.kbdlight) 5489 return; 5490 5491 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5492 led_update_brightness(led_cdev); 5493 led_classdev_suspend(led_cdev); 5494} 5495 5496static void kbdlight_resume(void) 5497{ 5498 if (!tp_features.kbdlight) 5499 return; 5500 5501 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5502} 5503 5504static struct ibm_struct kbdlight_driver_data = { 5505 .name = "kbdlight", 5506 .read = kbdlight_read, 5507 .write = kbdlight_write, 5508 .suspend = kbdlight_suspend, 5509 .resume = kbdlight_resume, 5510 .exit = kbdlight_exit, 5511}; 5512 5513/************************************************************************* 5514 * Light (thinklight) subdriver 5515 */ 5516 5517TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5518TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5519 5520static int light_get_status(void) 5521{ 5522 int status = 0; 5523 5524 if (tp_features.light_status) { 5525 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5526 return -EIO; 5527 return (!!status); 5528 } 5529 5530 return -ENXIO; 5531} 5532 5533static int light_set_status(int status) 5534{ 5535 int rc; 5536 5537 if (tp_features.light) { 5538 if (cmos_handle) { 5539 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5540 (status) ? 5541 TP_CMOS_THINKLIGHT_ON : 5542 TP_CMOS_THINKLIGHT_OFF); 5543 } else { 5544 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5545 (status) ? 1 : 0); 5546 } 5547 return (rc) ? 0 : -EIO; 5548 } 5549 5550 return -ENXIO; 5551} 5552 5553static int light_sysfs_set(struct led_classdev *led_cdev, 5554 enum led_brightness brightness) 5555{ 5556 return light_set_status((brightness != LED_OFF) ? 5557 TPACPI_LED_ON : TPACPI_LED_OFF); 5558} 5559 5560static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5561{ 5562 return (light_get_status() == 1) ? LED_FULL : LED_OFF; 5563} 5564 5565static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5566 .led_classdev = { 5567 .name = "tpacpi::thinklight", 5568 .brightness_set_blocking = &light_sysfs_set, 5569 .brightness_get = &light_sysfs_get, 5570 } 5571}; 5572 5573static int __init light_init(struct ibm_init_struct *iibm) 5574{ 5575 int rc; 5576 5577 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5578 5579 if (tpacpi_is_ibm()) { 5580 TPACPI_ACPIHANDLE_INIT(ledb); 5581 TPACPI_ACPIHANDLE_INIT(lght); 5582 } 5583 TPACPI_ACPIHANDLE_INIT(cmos); 5584 5585 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5586 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5587 5588 if (tp_features.light) 5589 /* light status not supported on 5590 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5591 tp_features.light_status = 5592 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5593 5594 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5595 str_supported(tp_features.light), 5596 str_supported(tp_features.light_status)); 5597 5598 if (!tp_features.light) 5599 return 1; 5600 5601 rc = led_classdev_register(&tpacpi_pdev->dev, 5602 &tpacpi_led_thinklight.led_classdev); 5603 5604 if (rc < 0) { 5605 tp_features.light = 0; 5606 tp_features.light_status = 0; 5607 } else { 5608 rc = 0; 5609 } 5610 5611 return rc; 5612} 5613 5614static void light_exit(void) 5615{ 5616 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5617} 5618 5619static int light_read(struct seq_file *m) 5620{ 5621 int status; 5622 5623 if (!tp_features.light) { 5624 seq_printf(m, "status:\t\tnot supported\n"); 5625 } else if (!tp_features.light_status) { 5626 seq_printf(m, "status:\t\tunknown\n"); 5627 seq_printf(m, "commands:\ton, off\n"); 5628 } else { 5629 status = light_get_status(); 5630 if (status < 0) 5631 return status; 5632 seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); 5633 seq_printf(m, "commands:\ton, off\n"); 5634 } 5635 5636 return 0; 5637} 5638 5639static int light_write(char *buf) 5640{ 5641 char *cmd; 5642 int newstatus = 0; 5643 5644 if (!tp_features.light) 5645 return -ENODEV; 5646 5647 while ((cmd = strsep(&buf, ","))) { 5648 if (strlencmp(cmd, "on") == 0) { 5649 newstatus = 1; 5650 } else if (strlencmp(cmd, "off") == 0) { 5651 newstatus = 0; 5652 } else 5653 return -EINVAL; 5654 } 5655 5656 return light_set_status(newstatus); 5657} 5658 5659static struct ibm_struct light_driver_data = { 5660 .name = "light", 5661 .read = light_read, 5662 .write = light_write, 5663 .exit = light_exit, 5664}; 5665 5666/************************************************************************* 5667 * CMOS subdriver 5668 */ 5669 5670/* sysfs cmos_command -------------------------------------------------- */ 5671static ssize_t cmos_command_store(struct device *dev, 5672 struct device_attribute *attr, 5673 const char *buf, size_t count) 5674{ 5675 unsigned long cmos_cmd; 5676 int res; 5677 5678 if (parse_strtoul(buf, 21, &cmos_cmd)) 5679 return -EINVAL; 5680 5681 res = issue_thinkpad_cmos_command(cmos_cmd); 5682 return (res) ? res : count; 5683} 5684 5685static DEVICE_ATTR_WO(cmos_command); 5686 5687/* --------------------------------------------------------------------- */ 5688 5689static int __init cmos_init(struct ibm_init_struct *iibm) 5690{ 5691 int res; 5692 5693 vdbg_printk(TPACPI_DBG_INIT, 5694 "initializing cmos commands subdriver\n"); 5695 5696 TPACPI_ACPIHANDLE_INIT(cmos); 5697 5698 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5699 str_supported(cmos_handle != NULL)); 5700 5701 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5702 if (res) 5703 return res; 5704 5705 return (cmos_handle) ? 0 : 1; 5706} 5707 5708static void cmos_exit(void) 5709{ 5710 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5711} 5712 5713static int cmos_read(struct seq_file *m) 5714{ 5715 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5716 R30, R31, T20-22, X20-21 */ 5717 if (!cmos_handle) 5718 seq_printf(m, "status:\t\tnot supported\n"); 5719 else { 5720 seq_printf(m, "status:\t\tsupported\n"); 5721 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5722 } 5723 5724 return 0; 5725} 5726 5727static int cmos_write(char *buf) 5728{ 5729 char *cmd; 5730 int cmos_cmd, res; 5731 5732 while ((cmd = strsep(&buf, ","))) { 5733 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5734 cmos_cmd >= 0 && cmos_cmd <= 21) { 5735 /* cmos_cmd set */ 5736 } else 5737 return -EINVAL; 5738 5739 res = issue_thinkpad_cmos_command(cmos_cmd); 5740 if (res) 5741 return res; 5742 } 5743 5744 return 0; 5745} 5746 5747static struct ibm_struct cmos_driver_data = { 5748 .name = "cmos", 5749 .read = cmos_read, 5750 .write = cmos_write, 5751 .exit = cmos_exit, 5752}; 5753 5754/************************************************************************* 5755 * LED subdriver 5756 */ 5757 5758enum led_access_mode { 5759 TPACPI_LED_NONE = 0, 5760 TPACPI_LED_570, /* 570 */ 5761 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5762 TPACPI_LED_NEW, /* all others */ 5763}; 5764 5765enum { /* For TPACPI_LED_OLD */ 5766 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5767 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5768 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5769}; 5770 5771static enum led_access_mode led_supported; 5772 5773static acpi_handle led_handle; 5774 5775#define TPACPI_LED_NUMLEDS 16 5776static struct tpacpi_led_classdev *tpacpi_leds; 5777static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5778static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5779 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5780 "tpacpi::power", 5781 "tpacpi:orange:batt", 5782 "tpacpi:green:batt", 5783 "tpacpi::dock_active", 5784 "tpacpi::bay_active", 5785 "tpacpi::dock_batt", 5786 "tpacpi::unknown_led", 5787 "tpacpi::standby", 5788 "tpacpi::dock_status1", 5789 "tpacpi::dock_status2", 5790 "tpacpi::unknown_led2", 5791 "tpacpi::unknown_led3", 5792 "tpacpi::thinkvantage", 5793}; 5794#define TPACPI_SAFE_LEDS 0x1081U 5795 5796static inline bool tpacpi_is_led_restricted(const unsigned int led) 5797{ 5798#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5799 return false; 5800#else 5801 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5802#endif 5803} 5804 5805static int led_get_status(const unsigned int led) 5806{ 5807 int status; 5808 enum led_status_t led_s; 5809 5810 switch (led_supported) { 5811 case TPACPI_LED_570: 5812 if (!acpi_evalf(ec_handle, 5813 &status, "GLED", "dd", 1 << led)) 5814 return -EIO; 5815 led_s = (status == 0) ? 5816 TPACPI_LED_OFF : 5817 ((status == 1) ? 5818 TPACPI_LED_ON : 5819 TPACPI_LED_BLINK); 5820 tpacpi_led_state_cache[led] = led_s; 5821 return led_s; 5822 default: 5823 return -ENXIO; 5824 } 5825 5826 /* not reached */ 5827} 5828 5829static int led_set_status(const unsigned int led, 5830 const enum led_status_t ledstatus) 5831{ 5832 /* off, on, blink. Index is led_status_t */ 5833 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5834 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5835 5836 int rc = 0; 5837 5838 switch (led_supported) { 5839 case TPACPI_LED_570: 5840 /* 570 */ 5841 if (unlikely(led > 7)) 5842 return -EINVAL; 5843 if (unlikely(tpacpi_is_led_restricted(led))) 5844 return -EPERM; 5845 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5846 (1 << led), led_sled_arg1[ledstatus])) 5847 return -EIO; 5848 break; 5849 case TPACPI_LED_OLD: 5850 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5851 if (unlikely(led > 7)) 5852 return -EINVAL; 5853 if (unlikely(tpacpi_is_led_restricted(led))) 5854 return -EPERM; 5855 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5856 if (rc >= 0) 5857 rc = ec_write(TPACPI_LED_EC_HLBL, 5858 (ledstatus == TPACPI_LED_BLINK) << led); 5859 if (rc >= 0) 5860 rc = ec_write(TPACPI_LED_EC_HLCL, 5861 (ledstatus != TPACPI_LED_OFF) << led); 5862 break; 5863 case TPACPI_LED_NEW: 5864 /* all others */ 5865 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5866 return -EINVAL; 5867 if (unlikely(tpacpi_is_led_restricted(led))) 5868 return -EPERM; 5869 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5870 led, led_led_arg1[ledstatus])) 5871 return -EIO; 5872 break; 5873 default: 5874 return -ENXIO; 5875 } 5876 5877 if (!rc) 5878 tpacpi_led_state_cache[led] = ledstatus; 5879 5880 return rc; 5881} 5882 5883static int led_sysfs_set(struct led_classdev *led_cdev, 5884 enum led_brightness brightness) 5885{ 5886 struct tpacpi_led_classdev *data = container_of(led_cdev, 5887 struct tpacpi_led_classdev, led_classdev); 5888 enum led_status_t new_state; 5889 5890 if (brightness == LED_OFF) 5891 new_state = TPACPI_LED_OFF; 5892 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5893 new_state = TPACPI_LED_ON; 5894 else 5895 new_state = TPACPI_LED_BLINK; 5896 5897 return led_set_status(data->led, new_state); 5898} 5899 5900static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5901 unsigned long *delay_on, unsigned long *delay_off) 5902{ 5903 struct tpacpi_led_classdev *data = container_of(led_cdev, 5904 struct tpacpi_led_classdev, led_classdev); 5905 5906 /* Can we choose the flash rate? */ 5907 if (*delay_on == 0 && *delay_off == 0) { 5908 /* yes. set them to the hardware blink rate (1 Hz) */ 5909 *delay_on = 500; /* ms */ 5910 *delay_off = 500; /* ms */ 5911 } else if ((*delay_on != 500) || (*delay_off != 500)) 5912 return -EINVAL; 5913 5914 return led_set_status(data->led, TPACPI_LED_BLINK); 5915} 5916 5917static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5918{ 5919 int rc; 5920 5921 struct tpacpi_led_classdev *data = container_of(led_cdev, 5922 struct tpacpi_led_classdev, led_classdev); 5923 5924 rc = led_get_status(data->led); 5925 5926 if (rc == TPACPI_LED_OFF || rc < 0) 5927 rc = LED_OFF; /* no error handling in led class :( */ 5928 else 5929 rc = LED_FULL; 5930 5931 return rc; 5932} 5933 5934static void led_exit(void) 5935{ 5936 unsigned int i; 5937 5938 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5939 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5940 5941 kfree(tpacpi_leds); 5942} 5943 5944static int __init tpacpi_init_led(unsigned int led) 5945{ 5946 /* LEDs with no name don't get registered */ 5947 if (!tpacpi_led_names[led]) 5948 return 0; 5949 5950 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5951 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5952 if (led_supported == TPACPI_LED_570) 5953 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5954 5955 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5956 tpacpi_leds[led].led = led; 5957 5958 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5959} 5960 5961static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5962 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5963 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5964 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5965 5966 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5967 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5968 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5969 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5970 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5971 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5972 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5973 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5974 5975 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5976 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5977 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5978 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5979 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5980 5981 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5982 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5983 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5984 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5985 5986 /* (1) - may have excess leds enabled on MSB */ 5987 5988 /* Defaults (order matters, keep last, don't reorder!) */ 5989 { /* Lenovo */ 5990 .vendor = PCI_VENDOR_ID_LENOVO, 5991 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5992 .quirks = 0x1fffU, 5993 }, 5994 { /* IBM ThinkPads with no EC version string */ 5995 .vendor = PCI_VENDOR_ID_IBM, 5996 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 5997 .quirks = 0x00ffU, 5998 }, 5999 { /* IBM ThinkPads with EC version string */ 6000 .vendor = PCI_VENDOR_ID_IBM, 6001 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 6002 .quirks = 0x00bfU, 6003 }, 6004}; 6005 6006static enum led_access_mode __init led_init_detect_mode(void) 6007{ 6008 acpi_status status; 6009 6010 if (tpacpi_is_ibm()) { 6011 /* 570 */ 6012 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 6013 if (ACPI_SUCCESS(status)) 6014 return TPACPI_LED_570; 6015 6016 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 6017 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 6018 if (ACPI_SUCCESS(status)) 6019 return TPACPI_LED_OLD; 6020 } 6021 6022 /* most others */ 6023 status = acpi_get_handle(ec_handle, "LED", &led_handle); 6024 if (ACPI_SUCCESS(status)) 6025 return TPACPI_LED_NEW; 6026 6027 /* R30, R31, and unknown firmwares */ 6028 led_handle = NULL; 6029 return TPACPI_LED_NONE; 6030} 6031 6032static int __init led_init(struct ibm_init_struct *iibm) 6033{ 6034 unsigned int i; 6035 int rc; 6036 unsigned long useful_leds; 6037 6038 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 6039 6040 led_supported = led_init_detect_mode(); 6041 6042 if (led_supported != TPACPI_LED_NONE) { 6043 useful_leds = tpacpi_check_quirks(led_useful_qtable, 6044 ARRAY_SIZE(led_useful_qtable)); 6045 6046 if (!useful_leds) { 6047 led_handle = NULL; 6048 led_supported = TPACPI_LED_NONE; 6049 } 6050 } 6051 6052 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 6053 str_supported(led_supported), led_supported); 6054 6055 if (led_supported == TPACPI_LED_NONE) 6056 return 1; 6057 6058 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), 6059 GFP_KERNEL); 6060 if (!tpacpi_leds) { 6061 pr_err("Out of memory for LED data\n"); 6062 return -ENOMEM; 6063 } 6064 6065 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 6066 tpacpi_leds[i].led = -1; 6067 6068 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 6069 rc = tpacpi_init_led(i); 6070 if (rc < 0) { 6071 led_exit(); 6072 return rc; 6073 } 6074 } 6075 } 6076 6077#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 6078 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 6079#endif 6080 return 0; 6081} 6082 6083#define str_led_status(s) \ 6084 ((s) == TPACPI_LED_OFF ? "off" : \ 6085 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 6086 6087static int led_read(struct seq_file *m) 6088{ 6089 if (!led_supported) { 6090 seq_printf(m, "status:\t\tnot supported\n"); 6091 return 0; 6092 } 6093 seq_printf(m, "status:\t\tsupported\n"); 6094 6095 if (led_supported == TPACPI_LED_570) { 6096 /* 570 */ 6097 int i, status; 6098 for (i = 0; i < 8; i++) { 6099 status = led_get_status(i); 6100 if (status < 0) 6101 return -EIO; 6102 seq_printf(m, "%d:\t\t%s\n", 6103 i, str_led_status(status)); 6104 } 6105 } 6106 6107 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 6108 6109 return 0; 6110} 6111 6112static int led_write(char *buf) 6113{ 6114 char *cmd; 6115 int led, rc; 6116 enum led_status_t s; 6117 6118 if (!led_supported) 6119 return -ENODEV; 6120 6121 while ((cmd = strsep(&buf, ","))) { 6122 if (sscanf(cmd, "%d", &led) != 1) 6123 return -EINVAL; 6124 6125 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 6126 return -ENODEV; 6127 6128 if (tpacpi_leds[led].led < 0) 6129 return -ENODEV; 6130 6131 if (strstr(cmd, "off")) { 6132 s = TPACPI_LED_OFF; 6133 } else if (strstr(cmd, "on")) { 6134 s = TPACPI_LED_ON; 6135 } else if (strstr(cmd, "blink")) { 6136 s = TPACPI_LED_BLINK; 6137 } else { 6138 return -EINVAL; 6139 } 6140 6141 rc = led_set_status(led, s); 6142 if (rc < 0) 6143 return rc; 6144 } 6145 6146 return 0; 6147} 6148 6149static struct ibm_struct led_driver_data = { 6150 .name = "led", 6151 .read = led_read, 6152 .write = led_write, 6153 .exit = led_exit, 6154}; 6155 6156/************************************************************************* 6157 * Beep subdriver 6158 */ 6159 6160TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6161 6162#define TPACPI_BEEP_Q1 0x0001 6163 6164static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6165 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6166 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6167}; 6168 6169static int __init beep_init(struct ibm_init_struct *iibm) 6170{ 6171 unsigned long quirks; 6172 6173 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6174 6175 TPACPI_ACPIHANDLE_INIT(beep); 6176 6177 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6178 str_supported(beep_handle != NULL)); 6179 6180 quirks = tpacpi_check_quirks(beep_quirk_table, 6181 ARRAY_SIZE(beep_quirk_table)); 6182 6183 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6184 6185 return (beep_handle) ? 0 : 1; 6186} 6187 6188static int beep_read(struct seq_file *m) 6189{ 6190 if (!beep_handle) 6191 seq_printf(m, "status:\t\tnot supported\n"); 6192 else { 6193 seq_printf(m, "status:\t\tsupported\n"); 6194 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6195 } 6196 6197 return 0; 6198} 6199 6200static int beep_write(char *buf) 6201{ 6202 char *cmd; 6203 int beep_cmd; 6204 6205 if (!beep_handle) 6206 return -ENODEV; 6207 6208 while ((cmd = strsep(&buf, ","))) { 6209 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6210 beep_cmd >= 0 && beep_cmd <= 17) { 6211 /* beep_cmd set */ 6212 } else 6213 return -EINVAL; 6214 if (tp_features.beep_needs_two_args) { 6215 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6216 beep_cmd, 0)) 6217 return -EIO; 6218 } else { 6219 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6220 beep_cmd)) 6221 return -EIO; 6222 } 6223 } 6224 6225 return 0; 6226} 6227 6228static struct ibm_struct beep_driver_data = { 6229 .name = "beep", 6230 .read = beep_read, 6231 .write = beep_write, 6232}; 6233 6234/************************************************************************* 6235 * Thermal subdriver 6236 */ 6237 6238enum thermal_access_mode { 6239 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6240 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6241 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6242 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6243 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6244}; 6245 6246enum { /* TPACPI_THERMAL_TPEC_* */ 6247 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6248 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6249 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */ 6250 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6251 6252 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6253}; 6254 6255 6256#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6257struct ibm_thermal_sensors_struct { 6258 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6259}; 6260 6261static enum thermal_access_mode thermal_read_mode; 6262 6263/* idx is zero-based */ 6264static int thermal_get_sensor(int idx, s32 *value) 6265{ 6266 int t; 6267 s8 tmp; 6268 char tmpi[5]; 6269 6270 t = TP_EC_THERMAL_TMP0; 6271 6272 switch (thermal_read_mode) { 6273#if TPACPI_MAX_THERMAL_SENSORS >= 16 6274 case TPACPI_THERMAL_TPEC_16: 6275 if (idx >= 8 && idx <= 15) { 6276 t = TP_EC_THERMAL_TMP8; 6277 idx -= 8; 6278 } 6279#endif 6280 fallthrough; 6281 case TPACPI_THERMAL_TPEC_8: 6282 if (idx <= 7) { 6283 if (!acpi_ec_read(t + idx, &tmp)) 6284 return -EIO; 6285 *value = tmp * 1000; 6286 return 0; 6287 } 6288 break; 6289 6290 case TPACPI_THERMAL_ACPI_UPDT: 6291 if (idx <= 7) { 6292 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6293 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6294 return -EIO; 6295 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6296 return -EIO; 6297 *value = (t - 2732) * 100; 6298 return 0; 6299 } 6300 break; 6301 6302 case TPACPI_THERMAL_ACPI_TMP07: 6303 if (idx <= 7) { 6304 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6305 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6306 return -EIO; 6307 if (t > 127 || t < -127) 6308 t = TP_EC_THERMAL_TMP_NA; 6309 *value = t * 1000; 6310 return 0; 6311 } 6312 break; 6313 6314 case TPACPI_THERMAL_NONE: 6315 default: 6316 return -ENOSYS; 6317 } 6318 6319 return -EINVAL; 6320} 6321 6322static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6323{ 6324 int res, i; 6325 int n; 6326 6327 n = 8; 6328 i = 0; 6329 6330 if (!s) 6331 return -EINVAL; 6332 6333 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6334 n = 16; 6335 6336 for (i = 0 ; i < n; i++) { 6337 res = thermal_get_sensor(i, &s->temp[i]); 6338 if (res) 6339 return res; 6340 } 6341 6342 return n; 6343} 6344 6345static void thermal_dump_all_sensors(void) 6346{ 6347 int n, i; 6348 struct ibm_thermal_sensors_struct t; 6349 6350 n = thermal_get_sensors(&t); 6351 if (n <= 0) 6352 return; 6353 6354 pr_notice("temperatures (Celsius):"); 6355 6356 for (i = 0; i < n; i++) { 6357 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6358 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6359 else 6360 pr_cont(" N/A"); 6361 } 6362 6363 pr_cont("\n"); 6364} 6365 6366/* sysfs temp##_input -------------------------------------------------- */ 6367 6368static ssize_t thermal_temp_input_show(struct device *dev, 6369 struct device_attribute *attr, 6370 char *buf) 6371{ 6372 struct sensor_device_attribute *sensor_attr = 6373 to_sensor_dev_attr(attr); 6374 int idx = sensor_attr->index; 6375 s32 value; 6376 int res; 6377 6378 res = thermal_get_sensor(idx, &value); 6379 if (res) 6380 return res; 6381 if (value == TPACPI_THERMAL_SENSOR_NA) 6382 return -ENXIO; 6383 6384 return snprintf(buf, PAGE_SIZE, "%d\n", value); 6385} 6386 6387#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6388 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6389 thermal_temp_input_show, NULL, _idxB) 6390 6391static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6392 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6393 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6394 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6395 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6396 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6397 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6398 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6399 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6400 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6401 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6402 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6403 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6404 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6405 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6406 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6407 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6408}; 6409 6410#define THERMAL_ATTRS(X) \ 6411 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6412 6413static struct attribute *thermal_temp_input_attr[] = { 6414 THERMAL_ATTRS(8), 6415 THERMAL_ATTRS(9), 6416 THERMAL_ATTRS(10), 6417 THERMAL_ATTRS(11), 6418 THERMAL_ATTRS(12), 6419 THERMAL_ATTRS(13), 6420 THERMAL_ATTRS(14), 6421 THERMAL_ATTRS(15), 6422 THERMAL_ATTRS(0), 6423 THERMAL_ATTRS(1), 6424 THERMAL_ATTRS(2), 6425 THERMAL_ATTRS(3), 6426 THERMAL_ATTRS(4), 6427 THERMAL_ATTRS(5), 6428 THERMAL_ATTRS(6), 6429 THERMAL_ATTRS(7), 6430 NULL 6431}; 6432 6433static const struct attribute_group thermal_temp_input16_group = { 6434 .attrs = thermal_temp_input_attr 6435}; 6436 6437static const struct attribute_group thermal_temp_input8_group = { 6438 .attrs = &thermal_temp_input_attr[8] 6439}; 6440 6441#undef THERMAL_SENSOR_ATTR_TEMP 6442#undef THERMAL_ATTRS 6443 6444/* --------------------------------------------------------------------- */ 6445 6446static int __init thermal_init(struct ibm_init_struct *iibm) 6447{ 6448 u8 t, ta1, ta2, ver = 0; 6449 int i; 6450 int acpi_tmp7; 6451 int res; 6452 6453 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6454 6455 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6456 6457 if (thinkpad_id.ec_model) { 6458 /* 6459 * Direct EC access mode: sensors at registers 6460 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6461 * non-implemented, thermal sensors return 0x80 when 6462 * not available 6463 * The above rule is unfortunately flawed. This has been seen with 6464 * 0xC2 (power supply ID) causing thermal control problems. 6465 * The EC version can be determined by offset 0xEF and at least for 6466 * version 3 the Lenovo firmware team confirmed that registers 0xC0-0xC7 6467 * are not thermal registers. 6468 */ 6469 if (!acpi_ec_read(TP_EC_FUNCREV, &ver)) 6470 pr_warn("Thinkpad ACPI EC unable to access EC version\n"); 6471 6472 ta1 = ta2 = 0; 6473 for (i = 0; i < 8; i++) { 6474 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6475 ta1 |= t; 6476 } else { 6477 ta1 = 0; 6478 break; 6479 } 6480 if (ver < 3) { 6481 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6482 ta2 |= t; 6483 } else { 6484 ta1 = 0; 6485 break; 6486 } 6487 } 6488 } 6489 if (ta1 == 0) { 6490 /* This is sheer paranoia, but we handle it anyway */ 6491 if (acpi_tmp7) { 6492 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6493 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6494 } else { 6495 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6496 thermal_read_mode = TPACPI_THERMAL_NONE; 6497 } 6498 } else { 6499 if (ver >= 3) 6500 thermal_read_mode = TPACPI_THERMAL_TPEC_8; 6501 else 6502 thermal_read_mode = 6503 (ta2 != 0) ? 6504 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6505 } 6506 } else if (acpi_tmp7) { 6507 if (tpacpi_is_ibm() && 6508 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6509 /* 600e/x, 770e, 770x */ 6510 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6511 } else { 6512 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6513 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6514 } 6515 } else { 6516 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6517 thermal_read_mode = TPACPI_THERMAL_NONE; 6518 } 6519 6520 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6521 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6522 thermal_read_mode); 6523 6524 switch (thermal_read_mode) { 6525 case TPACPI_THERMAL_TPEC_16: 6526 res = sysfs_create_group(&tpacpi_hwmon->kobj, 6527 &thermal_temp_input16_group); 6528 if (res) 6529 return res; 6530 break; 6531 case TPACPI_THERMAL_TPEC_8: 6532 case TPACPI_THERMAL_ACPI_TMP07: 6533 case TPACPI_THERMAL_ACPI_UPDT: 6534 res = sysfs_create_group(&tpacpi_hwmon->kobj, 6535 &thermal_temp_input8_group); 6536 if (res) 6537 return res; 6538 break; 6539 case TPACPI_THERMAL_NONE: 6540 default: 6541 return 1; 6542 } 6543 6544 return 0; 6545} 6546 6547static void thermal_exit(void) 6548{ 6549 switch (thermal_read_mode) { 6550 case TPACPI_THERMAL_TPEC_16: 6551 sysfs_remove_group(&tpacpi_hwmon->kobj, 6552 &thermal_temp_input16_group); 6553 break; 6554 case TPACPI_THERMAL_TPEC_8: 6555 case TPACPI_THERMAL_ACPI_TMP07: 6556 case TPACPI_THERMAL_ACPI_UPDT: 6557 sysfs_remove_group(&tpacpi_hwmon->kobj, 6558 &thermal_temp_input8_group); 6559 break; 6560 case TPACPI_THERMAL_NONE: 6561 default: 6562 break; 6563 } 6564} 6565 6566static int thermal_read(struct seq_file *m) 6567{ 6568 int n, i; 6569 struct ibm_thermal_sensors_struct t; 6570 6571 n = thermal_get_sensors(&t); 6572 if (unlikely(n < 0)) 6573 return n; 6574 6575 seq_printf(m, "temperatures:\t"); 6576 6577 if (n > 0) { 6578 for (i = 0; i < (n - 1); i++) 6579 seq_printf(m, "%d ", t.temp[i] / 1000); 6580 seq_printf(m, "%d\n", t.temp[i] / 1000); 6581 } else 6582 seq_printf(m, "not supported\n"); 6583 6584 return 0; 6585} 6586 6587static struct ibm_struct thermal_driver_data = { 6588 .name = "thermal", 6589 .read = thermal_read, 6590 .exit = thermal_exit, 6591}; 6592 6593/************************************************************************* 6594 * Backlight/brightness subdriver 6595 */ 6596 6597#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6598 6599/* 6600 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6601 * CMOS NVRAM byte 0x5E, bits 0-3. 6602 * 6603 * EC HBRV (0x31) has the following layout 6604 * Bit 7: unknown function 6605 * Bit 6: unknown function 6606 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6607 * Bit 4: must be set to zero to avoid problems 6608 * Bit 3-0: backlight brightness level 6609 * 6610 * brightness_get_raw returns status data in the HBRV layout 6611 * 6612 * WARNING: The X61 has been verified to use HBRV for something else, so 6613 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6614 * testing on the very early *60 Lenovo models... 6615 */ 6616 6617enum { 6618 TP_EC_BACKLIGHT = 0x31, 6619 6620 /* TP_EC_BACKLIGHT bitmasks */ 6621 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6622 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6623 TP_EC_BACKLIGHT_MAPSW = 0x20, 6624}; 6625 6626enum tpacpi_brightness_access_mode { 6627 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6628 TPACPI_BRGHT_MODE_EC, /* EC control */ 6629 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6630 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6631 TPACPI_BRGHT_MODE_MAX 6632}; 6633 6634static struct backlight_device *ibm_backlight_device; 6635 6636static enum tpacpi_brightness_access_mode brightness_mode = 6637 TPACPI_BRGHT_MODE_MAX; 6638 6639static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6640 6641static struct mutex brightness_mutex; 6642 6643/* NVRAM brightness access, 6644 * call with brightness_mutex held! */ 6645static unsigned int tpacpi_brightness_nvram_get(void) 6646{ 6647 u8 lnvram; 6648 6649 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6650 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6651 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6652 lnvram &= bright_maxlvl; 6653 6654 return lnvram; 6655} 6656 6657static void tpacpi_brightness_checkpoint_nvram(void) 6658{ 6659 u8 lec = 0; 6660 u8 b_nvram; 6661 6662 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6663 return; 6664 6665 vdbg_printk(TPACPI_DBG_BRGHT, 6666 "trying to checkpoint backlight level to NVRAM...\n"); 6667 6668 if (mutex_lock_killable(&brightness_mutex) < 0) 6669 return; 6670 6671 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6672 goto unlock; 6673 lec &= TP_EC_BACKLIGHT_LVLMSK; 6674 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6675 6676 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6677 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6678 /* NVRAM needs update */ 6679 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6680 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6681 b_nvram |= lec; 6682 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6683 dbg_printk(TPACPI_DBG_BRGHT, 6684 "updated NVRAM backlight level to %u (0x%02x)\n", 6685 (unsigned int) lec, (unsigned int) b_nvram); 6686 } else 6687 vdbg_printk(TPACPI_DBG_BRGHT, 6688 "NVRAM backlight level already is %u (0x%02x)\n", 6689 (unsigned int) lec, (unsigned int) b_nvram); 6690 6691unlock: 6692 mutex_unlock(&brightness_mutex); 6693} 6694 6695 6696/* call with brightness_mutex held! */ 6697static int tpacpi_brightness_get_raw(int *status) 6698{ 6699 u8 lec = 0; 6700 6701 switch (brightness_mode) { 6702 case TPACPI_BRGHT_MODE_UCMS_STEP: 6703 *status = tpacpi_brightness_nvram_get(); 6704 return 0; 6705 case TPACPI_BRGHT_MODE_EC: 6706 case TPACPI_BRGHT_MODE_ECNVRAM: 6707 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6708 return -EIO; 6709 *status = lec; 6710 return 0; 6711 default: 6712 return -ENXIO; 6713 } 6714} 6715 6716/* call with brightness_mutex held! */ 6717/* do NOT call with illegal backlight level value */ 6718static int tpacpi_brightness_set_ec(unsigned int value) 6719{ 6720 u8 lec = 0; 6721 6722 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6723 return -EIO; 6724 6725 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6726 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6727 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6728 return -EIO; 6729 6730 return 0; 6731} 6732 6733/* call with brightness_mutex held! */ 6734static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6735{ 6736 int cmos_cmd, inc; 6737 unsigned int current_value, i; 6738 6739 current_value = tpacpi_brightness_nvram_get(); 6740 6741 if (value == current_value) 6742 return 0; 6743 6744 cmos_cmd = (value > current_value) ? 6745 TP_CMOS_BRIGHTNESS_UP : 6746 TP_CMOS_BRIGHTNESS_DOWN; 6747 inc = (value > current_value) ? 1 : -1; 6748 6749 for (i = current_value; i != value; i += inc) 6750 if (issue_thinkpad_cmos_command(cmos_cmd)) 6751 return -EIO; 6752 6753 return 0; 6754} 6755 6756/* May return EINTR which can always be mapped to ERESTARTSYS */ 6757static int brightness_set(unsigned int value) 6758{ 6759 int res; 6760 6761 if (value > bright_maxlvl) 6762 return -EINVAL; 6763 6764 vdbg_printk(TPACPI_DBG_BRGHT, 6765 "set backlight level to %d\n", value); 6766 6767 res = mutex_lock_killable(&brightness_mutex); 6768 if (res < 0) 6769 return res; 6770 6771 switch (brightness_mode) { 6772 case TPACPI_BRGHT_MODE_EC: 6773 case TPACPI_BRGHT_MODE_ECNVRAM: 6774 res = tpacpi_brightness_set_ec(value); 6775 break; 6776 case TPACPI_BRGHT_MODE_UCMS_STEP: 6777 res = tpacpi_brightness_set_ucmsstep(value); 6778 break; 6779 default: 6780 res = -ENXIO; 6781 } 6782 6783 mutex_unlock(&brightness_mutex); 6784 return res; 6785} 6786 6787/* sysfs backlight class ----------------------------------------------- */ 6788 6789static int brightness_update_status(struct backlight_device *bd) 6790{ 6791 unsigned int level = 6792 (bd->props.fb_blank == FB_BLANK_UNBLANK && 6793 bd->props.power == FB_BLANK_UNBLANK) ? 6794 bd->props.brightness : 0; 6795 6796 dbg_printk(TPACPI_DBG_BRGHT, 6797 "backlight: attempt to set level to %d\n", 6798 level); 6799 6800 /* it is the backlight class's job (caller) to handle 6801 * EINTR and other errors properly */ 6802 return brightness_set(level); 6803} 6804 6805static int brightness_get(struct backlight_device *bd) 6806{ 6807 int status, res; 6808 6809 res = mutex_lock_killable(&brightness_mutex); 6810 if (res < 0) 6811 return 0; 6812 6813 res = tpacpi_brightness_get_raw(&status); 6814 6815 mutex_unlock(&brightness_mutex); 6816 6817 if (res < 0) 6818 return 0; 6819 6820 return status & TP_EC_BACKLIGHT_LVLMSK; 6821} 6822 6823static void tpacpi_brightness_notify_change(void) 6824{ 6825 backlight_force_update(ibm_backlight_device, 6826 BACKLIGHT_UPDATE_HOTKEY); 6827} 6828 6829static const struct backlight_ops ibm_backlight_data = { 6830 .get_brightness = brightness_get, 6831 .update_status = brightness_update_status, 6832}; 6833 6834/* --------------------------------------------------------------------- */ 6835 6836/* 6837 * Call _BCL method of video device. On some ThinkPads this will 6838 * switch the firmware to the ACPI brightness control mode. 6839 */ 6840 6841static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6842{ 6843 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6844 union acpi_object *obj; 6845 struct acpi_device *device, *child; 6846 int rc; 6847 6848 if (acpi_bus_get_device(handle, &device)) 6849 return 0; 6850 6851 rc = 0; 6852 list_for_each_entry(child, &device->children, node) { 6853 acpi_status status = acpi_evaluate_object(child->handle, "_BCL", 6854 NULL, &buffer); 6855 if (ACPI_FAILURE(status)) { 6856 buffer.length = ACPI_ALLOCATE_BUFFER; 6857 continue; 6858 } 6859 6860 obj = (union acpi_object *)buffer.pointer; 6861 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 6862 pr_err("Unknown _BCL data, please report this to %s\n", 6863 TPACPI_MAIL); 6864 rc = 0; 6865 } else { 6866 rc = obj->package.count; 6867 } 6868 break; 6869 } 6870 6871 kfree(buffer.pointer); 6872 return rc; 6873} 6874 6875 6876/* 6877 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6878 */ 6879static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6880{ 6881 acpi_handle video_device; 6882 int bcl_levels = 0; 6883 6884 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6885 if (video_device) 6886 bcl_levels = tpacpi_query_bcl_levels(video_device); 6887 6888 tp_features.bright_acpimode = (bcl_levels > 0); 6889 6890 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6891} 6892 6893/* 6894 * These are only useful for models that have only one possibility 6895 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6896 * these quirks. 6897 */ 6898#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6899#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6900#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6901 6902static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6903 /* Models with ATI GPUs known to require ECNVRAM mode */ 6904 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6905 6906 /* Models with ATI GPUs that can use ECNVRAM */ 6907 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6908 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6909 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6910 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6911 6912 /* Models with Intel Extreme Graphics 2 */ 6913 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6914 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6915 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6916 6917 /* Models with Intel GMA900 */ 6918 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6919 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6920 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6921}; 6922 6923/* 6924 * Returns < 0 for error, otherwise sets tp_features.bright_* 6925 * and bright_maxlvl. 6926 */ 6927static void __init tpacpi_detect_brightness_capabilities(void) 6928{ 6929 unsigned int b; 6930 6931 vdbg_printk(TPACPI_DBG_INIT, 6932 "detecting firmware brightness interface capabilities\n"); 6933 6934 /* we could run a quirks check here (same table used by 6935 * brightness_init) if needed */ 6936 6937 /* 6938 * We always attempt to detect acpi support, so as to switch 6939 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6940 * going to publish a backlight interface 6941 */ 6942 b = tpacpi_check_std_acpi_brightness_support(); 6943 switch (b) { 6944 case 16: 6945 bright_maxlvl = 15; 6946 break; 6947 case 8: 6948 case 0: 6949 bright_maxlvl = 7; 6950 break; 6951 default: 6952 tp_features.bright_unkfw = 1; 6953 bright_maxlvl = b - 1; 6954 } 6955 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6956} 6957 6958static int __init brightness_init(struct ibm_init_struct *iibm) 6959{ 6960 struct backlight_properties props; 6961 int b; 6962 unsigned long quirks; 6963 6964 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6965 6966 mutex_init(&brightness_mutex); 6967 6968 quirks = tpacpi_check_quirks(brightness_quirk_table, 6969 ARRAY_SIZE(brightness_quirk_table)); 6970 6971 /* tpacpi_detect_brightness_capabilities() must have run already */ 6972 6973 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6974 if (tp_features.bright_unkfw) 6975 return 1; 6976 6977 if (!brightness_enable) { 6978 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6979 "brightness support disabled by module parameter\n"); 6980 return 1; 6981 } 6982 6983 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6984 if (brightness_enable > 1) { 6985 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6986 return 1; 6987 } else if (brightness_enable == 1) { 6988 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6989 return 1; 6990 } 6991 } else if (!tp_features.bright_acpimode) { 6992 pr_notice("ACPI backlight interface not available\n"); 6993 return 1; 6994 } 6995 6996 pr_notice("ACPI native brightness control enabled\n"); 6997 6998 /* 6999 * Check for module parameter bogosity, note that we 7000 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 7001 * able to detect "unspecified" 7002 */ 7003 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 7004 return -EINVAL; 7005 7006 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 7007 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 7008 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 7009 if (quirks & TPACPI_BRGHT_Q_EC) 7010 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 7011 else 7012 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 7013 7014 dbg_printk(TPACPI_DBG_BRGHT, 7015 "driver auto-selected brightness_mode=%d\n", 7016 brightness_mode); 7017 } 7018 7019 /* Safety */ 7020 if (!tpacpi_is_ibm() && 7021 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 7022 brightness_mode == TPACPI_BRGHT_MODE_EC)) 7023 return -EINVAL; 7024 7025 if (tpacpi_brightness_get_raw(&b) < 0) 7026 return 1; 7027 7028 memset(&props, 0, sizeof(struct backlight_properties)); 7029 props.type = BACKLIGHT_PLATFORM; 7030 props.max_brightness = bright_maxlvl; 7031 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 7032 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 7033 NULL, NULL, 7034 &ibm_backlight_data, 7035 &props); 7036 if (IS_ERR(ibm_backlight_device)) { 7037 int rc = PTR_ERR(ibm_backlight_device); 7038 ibm_backlight_device = NULL; 7039 pr_err("Could not register backlight device\n"); 7040 return rc; 7041 } 7042 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7043 "brightness is supported\n"); 7044 7045 if (quirks & TPACPI_BRGHT_Q_ASK) { 7046 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 7047 brightness_mode); 7048 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 7049 TPACPI_MAIL); 7050 } 7051 7052 /* Added by mistake in early 2007. Probably useless, but it could 7053 * be working around some unknown firmware problem where the value 7054 * read at startup doesn't match the real hardware state... so leave 7055 * it in place just in case */ 7056 backlight_update_status(ibm_backlight_device); 7057 7058 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7059 "brightness: registering brightness hotkeys as change notification\n"); 7060 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7061 | TP_ACPI_HKEY_BRGHTUP_MASK 7062 | TP_ACPI_HKEY_BRGHTDWN_MASK); 7063 return 0; 7064} 7065 7066static void brightness_suspend(void) 7067{ 7068 tpacpi_brightness_checkpoint_nvram(); 7069} 7070 7071static void brightness_shutdown(void) 7072{ 7073 tpacpi_brightness_checkpoint_nvram(); 7074} 7075 7076static void brightness_exit(void) 7077{ 7078 if (ibm_backlight_device) { 7079 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 7080 "calling backlight_device_unregister()\n"); 7081 backlight_device_unregister(ibm_backlight_device); 7082 } 7083 7084 tpacpi_brightness_checkpoint_nvram(); 7085} 7086 7087static int brightness_read(struct seq_file *m) 7088{ 7089 int level; 7090 7091 level = brightness_get(NULL); 7092 if (level < 0) { 7093 seq_printf(m, "level:\t\tunreadable\n"); 7094 } else { 7095 seq_printf(m, "level:\t\t%d\n", level); 7096 seq_printf(m, "commands:\tup, down\n"); 7097 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7098 bright_maxlvl); 7099 } 7100 7101 return 0; 7102} 7103 7104static int brightness_write(char *buf) 7105{ 7106 int level; 7107 int rc; 7108 char *cmd; 7109 7110 level = brightness_get(NULL); 7111 if (level < 0) 7112 return level; 7113 7114 while ((cmd = strsep(&buf, ","))) { 7115 if (strlencmp(cmd, "up") == 0) { 7116 if (level < bright_maxlvl) 7117 level++; 7118 } else if (strlencmp(cmd, "down") == 0) { 7119 if (level > 0) 7120 level--; 7121 } else if (sscanf(cmd, "level %d", &level) == 1 && 7122 level >= 0 && level <= bright_maxlvl) { 7123 /* new level set */ 7124 } else 7125 return -EINVAL; 7126 } 7127 7128 tpacpi_disclose_usertask("procfs brightness", 7129 "set level to %d\n", level); 7130 7131 /* 7132 * Now we know what the final level should be, so we try to set it. 7133 * Doing it this way makes the syscall restartable in case of EINTR 7134 */ 7135 rc = brightness_set(level); 7136 if (!rc && ibm_backlight_device) 7137 backlight_force_update(ibm_backlight_device, 7138 BACKLIGHT_UPDATE_SYSFS); 7139 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7140} 7141 7142static struct ibm_struct brightness_driver_data = { 7143 .name = "brightness", 7144 .read = brightness_read, 7145 .write = brightness_write, 7146 .exit = brightness_exit, 7147 .suspend = brightness_suspend, 7148 .shutdown = brightness_shutdown, 7149}; 7150 7151/************************************************************************* 7152 * Volume subdriver 7153 */ 7154 7155/* 7156 * IBM ThinkPads have a simple volume controller with MUTE gating. 7157 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7158 * 7159 * Since the *61 series (and probably also the later *60 series), Lenovo 7160 * ThinkPads only implement the MUTE gate. 7161 * 7162 * EC register 0x30 7163 * Bit 6: MUTE (1 mutes sound) 7164 * Bit 3-0: Volume 7165 * Other bits should be zero as far as we know. 7166 * 7167 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7168 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7169 * such as bit 7 which is used to detect repeated presses of MUTE, 7170 * and we leave them unchanged. 7171 * 7172 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7173 * in response to user input. Unfortunately, this rarely works well. 7174 * The laptop changes the state of its internal MUTE gate and, on some 7175 * models, sends KEY_MUTE, causing any user code that responds to the 7176 * mute button to get confused. The hardware MUTE gate is also 7177 * unnecessary, since user code can handle the mute button without 7178 * kernel or EC help. 7179 * 7180 * To avoid confusing userspace, we simply disable all EC-based mute 7181 * and volume controls when possible. 7182 */ 7183 7184#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7185 7186#define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7187#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7188#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7189 7190#if SNDRV_CARDS <= 32 7191#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7192#else 7193#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7194#endif 7195static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7196static char *alsa_id = "ThinkPadEC"; 7197static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7198 7199struct tpacpi_alsa_data { 7200 struct snd_card *card; 7201 struct snd_ctl_elem_id *ctl_mute_id; 7202 struct snd_ctl_elem_id *ctl_vol_id; 7203}; 7204 7205static struct snd_card *alsa_card; 7206 7207enum { 7208 TP_EC_AUDIO = 0x30, 7209 7210 /* TP_EC_AUDIO bits */ 7211 TP_EC_AUDIO_MUTESW = 6, 7212 7213 /* TP_EC_AUDIO bitmasks */ 7214 TP_EC_AUDIO_LVL_MSK = 0x0F, 7215 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7216 7217 /* Maximum volume */ 7218 TP_EC_VOLUME_MAX = 14, 7219}; 7220 7221enum tpacpi_volume_access_mode { 7222 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7223 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7224 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7225 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7226 TPACPI_VOL_MODE_MAX 7227}; 7228 7229enum tpacpi_volume_capabilities { 7230 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7231 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7232 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7233 TPACPI_VOL_CAP_MAX 7234}; 7235 7236enum tpacpi_mute_btn_mode { 7237 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7238 /* We don't know what mode 1 is. */ 7239 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7240 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7241}; 7242 7243static enum tpacpi_volume_access_mode volume_mode = 7244 TPACPI_VOL_MODE_MAX; 7245 7246static enum tpacpi_volume_capabilities volume_capabilities; 7247static bool volume_control_allowed; 7248static bool software_mute_requested = true; 7249static bool software_mute_active; 7250static int software_mute_orig_mode; 7251 7252/* 7253 * Used to syncronize writers to TP_EC_AUDIO and 7254 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7255 */ 7256static struct mutex volume_mutex; 7257 7258static void tpacpi_volume_checkpoint_nvram(void) 7259{ 7260 u8 lec = 0; 7261 u8 b_nvram; 7262 u8 ec_mask; 7263 7264 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7265 return; 7266 if (!volume_control_allowed) 7267 return; 7268 if (software_mute_active) 7269 return; 7270 7271 vdbg_printk(TPACPI_DBG_MIXER, 7272 "trying to checkpoint mixer state to NVRAM...\n"); 7273 7274 if (tp_features.mixer_no_level_control) 7275 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7276 else 7277 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7278 7279 if (mutex_lock_killable(&volume_mutex) < 0) 7280 return; 7281 7282 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7283 goto unlock; 7284 lec &= ec_mask; 7285 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7286 7287 if (lec != (b_nvram & ec_mask)) { 7288 /* NVRAM needs update */ 7289 b_nvram &= ~ec_mask; 7290 b_nvram |= lec; 7291 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7292 dbg_printk(TPACPI_DBG_MIXER, 7293 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7294 (unsigned int) lec, (unsigned int) b_nvram); 7295 } else { 7296 vdbg_printk(TPACPI_DBG_MIXER, 7297 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7298 (unsigned int) lec, (unsigned int) b_nvram); 7299 } 7300 7301unlock: 7302 mutex_unlock(&volume_mutex); 7303} 7304 7305static int volume_get_status_ec(u8 *status) 7306{ 7307 u8 s; 7308 7309 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7310 return -EIO; 7311 7312 *status = s; 7313 7314 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7315 7316 return 0; 7317} 7318 7319static int volume_get_status(u8 *status) 7320{ 7321 return volume_get_status_ec(status); 7322} 7323 7324static int volume_set_status_ec(const u8 status) 7325{ 7326 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7327 return -EIO; 7328 7329 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7330 7331 /* 7332 * On X200s, and possibly on others, it can take a while for 7333 * reads to become correct. 7334 */ 7335 msleep(1); 7336 7337 return 0; 7338} 7339 7340static int volume_set_status(const u8 status) 7341{ 7342 return volume_set_status_ec(status); 7343} 7344 7345/* returns < 0 on error, 0 on no change, 1 on change */ 7346static int __volume_set_mute_ec(const bool mute) 7347{ 7348 int rc; 7349 u8 s, n; 7350 7351 if (mutex_lock_killable(&volume_mutex) < 0) 7352 return -EINTR; 7353 7354 rc = volume_get_status_ec(&s); 7355 if (rc) 7356 goto unlock; 7357 7358 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7359 s & ~TP_EC_AUDIO_MUTESW_MSK; 7360 7361 if (n != s) { 7362 rc = volume_set_status_ec(n); 7363 if (!rc) 7364 rc = 1; 7365 } 7366 7367unlock: 7368 mutex_unlock(&volume_mutex); 7369 return rc; 7370} 7371 7372static int volume_alsa_set_mute(const bool mute) 7373{ 7374 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7375 (mute) ? "" : "un"); 7376 return __volume_set_mute_ec(mute); 7377} 7378 7379static int volume_set_mute(const bool mute) 7380{ 7381 int rc; 7382 7383 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7384 (mute) ? "" : "un"); 7385 7386 rc = __volume_set_mute_ec(mute); 7387 return (rc < 0) ? rc : 0; 7388} 7389 7390/* returns < 0 on error, 0 on no change, 1 on change */ 7391static int __volume_set_volume_ec(const u8 vol) 7392{ 7393 int rc; 7394 u8 s, n; 7395 7396 if (vol > TP_EC_VOLUME_MAX) 7397 return -EINVAL; 7398 7399 if (mutex_lock_killable(&volume_mutex) < 0) 7400 return -EINTR; 7401 7402 rc = volume_get_status_ec(&s); 7403 if (rc) 7404 goto unlock; 7405 7406 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7407 7408 if (n != s) { 7409 rc = volume_set_status_ec(n); 7410 if (!rc) 7411 rc = 1; 7412 } 7413 7414unlock: 7415 mutex_unlock(&volume_mutex); 7416 return rc; 7417} 7418 7419static int volume_set_software_mute(bool startup) 7420{ 7421 int result; 7422 7423 if (!tpacpi_is_lenovo()) 7424 return -ENODEV; 7425 7426 if (startup) { 7427 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7428 "HAUM", "qd")) 7429 return -EIO; 7430 7431 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7432 "Initial HAUM setting was %d\n", 7433 software_mute_orig_mode); 7434 } 7435 7436 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7437 (int)TP_EC_MUTE_BTN_NONE)) 7438 return -EIO; 7439 7440 if (result != TP_EC_MUTE_BTN_NONE) 7441 pr_warn("Unexpected SAUM result %d\n", 7442 result); 7443 7444 /* 7445 * In software mute mode, the standard codec controls take 7446 * precendence, so we unmute the ThinkPad HW switch at 7447 * startup. Just on case there are SAUM-capable ThinkPads 7448 * with level controls, set max HW volume as well. 7449 */ 7450 if (tp_features.mixer_no_level_control) 7451 result = volume_set_mute(false); 7452 else 7453 result = volume_set_status(TP_EC_VOLUME_MAX); 7454 7455 if (result != 0) 7456 pr_warn("Failed to unmute the HW mute switch\n"); 7457 7458 return 0; 7459} 7460 7461static void volume_exit_software_mute(void) 7462{ 7463 int r; 7464 7465 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7466 || r != software_mute_orig_mode) 7467 pr_warn("Failed to restore mute mode\n"); 7468} 7469 7470static int volume_alsa_set_volume(const u8 vol) 7471{ 7472 dbg_printk(TPACPI_DBG_MIXER, 7473 "ALSA: trying to set volume level to %hu\n", vol); 7474 return __volume_set_volume_ec(vol); 7475} 7476 7477static void volume_alsa_notify_change(void) 7478{ 7479 struct tpacpi_alsa_data *d; 7480 7481 if (alsa_card && alsa_card->private_data) { 7482 d = alsa_card->private_data; 7483 if (d->ctl_mute_id) 7484 snd_ctl_notify(alsa_card, 7485 SNDRV_CTL_EVENT_MASK_VALUE, 7486 d->ctl_mute_id); 7487 if (d->ctl_vol_id) 7488 snd_ctl_notify(alsa_card, 7489 SNDRV_CTL_EVENT_MASK_VALUE, 7490 d->ctl_vol_id); 7491 } 7492} 7493 7494static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7495 struct snd_ctl_elem_info *uinfo) 7496{ 7497 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7498 uinfo->count = 1; 7499 uinfo->value.integer.min = 0; 7500 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7501 return 0; 7502} 7503 7504static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7505 struct snd_ctl_elem_value *ucontrol) 7506{ 7507 u8 s; 7508 int rc; 7509 7510 rc = volume_get_status(&s); 7511 if (rc < 0) 7512 return rc; 7513 7514 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7515 return 0; 7516} 7517 7518static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7519 struct snd_ctl_elem_value *ucontrol) 7520{ 7521 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7522 ucontrol->value.integer.value[0]); 7523 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7524} 7525 7526#define volume_alsa_mute_info snd_ctl_boolean_mono_info 7527 7528static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7529 struct snd_ctl_elem_value *ucontrol) 7530{ 7531 u8 s; 7532 int rc; 7533 7534 rc = volume_get_status(&s); 7535 if (rc < 0) 7536 return rc; 7537 7538 ucontrol->value.integer.value[0] = 7539 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7540 return 0; 7541} 7542 7543static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7544 struct snd_ctl_elem_value *ucontrol) 7545{ 7546 tpacpi_disclose_usertask("ALSA", "%smute\n", 7547 ucontrol->value.integer.value[0] ? 7548 "un" : ""); 7549 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7550} 7551 7552static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7553 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7554 .name = "Console Playback Volume", 7555 .index = 0, 7556 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7557 .info = volume_alsa_vol_info, 7558 .get = volume_alsa_vol_get, 7559}; 7560 7561static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7562 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7563 .name = "Console Playback Switch", 7564 .index = 0, 7565 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7566 .info = volume_alsa_mute_info, 7567 .get = volume_alsa_mute_get, 7568}; 7569 7570static void volume_suspend(void) 7571{ 7572 tpacpi_volume_checkpoint_nvram(); 7573} 7574 7575static void volume_resume(void) 7576{ 7577 if (software_mute_active) { 7578 if (volume_set_software_mute(false) < 0) 7579 pr_warn("Failed to restore software mute\n"); 7580 } else { 7581 volume_alsa_notify_change(); 7582 } 7583} 7584 7585static void volume_shutdown(void) 7586{ 7587 tpacpi_volume_checkpoint_nvram(); 7588} 7589 7590static void volume_exit(void) 7591{ 7592 if (alsa_card) { 7593 snd_card_free(alsa_card); 7594 alsa_card = NULL; 7595 } 7596 7597 tpacpi_volume_checkpoint_nvram(); 7598 7599 if (software_mute_active) 7600 volume_exit_software_mute(); 7601} 7602 7603static int __init volume_create_alsa_mixer(void) 7604{ 7605 struct snd_card *card; 7606 struct tpacpi_alsa_data *data; 7607 struct snd_kcontrol *ctl_vol; 7608 struct snd_kcontrol *ctl_mute; 7609 int rc; 7610 7611 rc = snd_card_new(&tpacpi_pdev->dev, 7612 alsa_index, alsa_id, THIS_MODULE, 7613 sizeof(struct tpacpi_alsa_data), &card); 7614 if (rc < 0 || !card) { 7615 pr_err("Failed to create ALSA card structures: %d\n", rc); 7616 return 1; 7617 } 7618 7619 BUG_ON(!card->private_data); 7620 data = card->private_data; 7621 data->card = card; 7622 7623 strlcpy(card->driver, TPACPI_ALSA_DRVNAME, 7624 sizeof(card->driver)); 7625 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7626 sizeof(card->shortname)); 7627 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7628 (thinkpad_id.ec_version_str) ? 7629 thinkpad_id.ec_version_str : "(unknown)"); 7630 snprintf(card->longname, sizeof(card->longname), 7631 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7632 (thinkpad_id.ec_version_str) ? 7633 thinkpad_id.ec_version_str : "unknown"); 7634 7635 if (volume_control_allowed) { 7636 volume_alsa_control_vol.put = volume_alsa_vol_put; 7637 volume_alsa_control_vol.access = 7638 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7639 7640 volume_alsa_control_mute.put = volume_alsa_mute_put; 7641 volume_alsa_control_mute.access = 7642 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7643 } 7644 7645 if (!tp_features.mixer_no_level_control) { 7646 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7647 rc = snd_ctl_add(card, ctl_vol); 7648 if (rc < 0) { 7649 pr_err("Failed to create ALSA volume control: %d\n", 7650 rc); 7651 goto err_exit; 7652 } 7653 data->ctl_vol_id = &ctl_vol->id; 7654 } 7655 7656 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7657 rc = snd_ctl_add(card, ctl_mute); 7658 if (rc < 0) { 7659 pr_err("Failed to create ALSA mute control: %d\n", rc); 7660 goto err_exit; 7661 } 7662 data->ctl_mute_id = &ctl_mute->id; 7663 7664 rc = snd_card_register(card); 7665 if (rc < 0) { 7666 pr_err("Failed to register ALSA card: %d\n", rc); 7667 goto err_exit; 7668 } 7669 7670 alsa_card = card; 7671 return 0; 7672 7673err_exit: 7674 snd_card_free(card); 7675 return 1; 7676} 7677 7678#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7679#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7680 7681static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7682 /* Whitelist volume level on all IBM by default */ 7683 { .vendor = PCI_VENDOR_ID_IBM, 7684 .bios = TPACPI_MATCH_ANY, 7685 .ec = TPACPI_MATCH_ANY, 7686 .quirks = TPACPI_VOL_Q_LEVEL }, 7687 7688 /* Lenovo models with volume control (needs confirmation) */ 7689 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7690 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7691 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7692 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7693 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7694 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7695 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7696 7697 /* Whitelist mute-only on all Lenovo by default */ 7698 { .vendor = PCI_VENDOR_ID_LENOVO, 7699 .bios = TPACPI_MATCH_ANY, 7700 .ec = TPACPI_MATCH_ANY, 7701 .quirks = TPACPI_VOL_Q_MUTEONLY } 7702}; 7703 7704static int __init volume_init(struct ibm_init_struct *iibm) 7705{ 7706 unsigned long quirks; 7707 int rc; 7708 7709 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7710 7711 mutex_init(&volume_mutex); 7712 7713 /* 7714 * Check for module parameter bogosity, note that we 7715 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7716 * able to detect "unspecified" 7717 */ 7718 if (volume_mode > TPACPI_VOL_MODE_MAX) 7719 return -EINVAL; 7720 7721 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7722 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7723 TPACPI_MAIL); 7724 return 1; 7725 } 7726 7727 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7728 return -EINVAL; 7729 7730 /* 7731 * The ALSA mixer is our primary interface. 7732 * When disabled, don't install the subdriver at all 7733 */ 7734 if (!alsa_enable) { 7735 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7736 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7737 return 1; 7738 } 7739 7740 quirks = tpacpi_check_quirks(volume_quirk_table, 7741 ARRAY_SIZE(volume_quirk_table)); 7742 7743 switch (volume_capabilities) { 7744 case TPACPI_VOL_CAP_AUTO: 7745 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7746 tp_features.mixer_no_level_control = 1; 7747 else if (quirks & TPACPI_VOL_Q_LEVEL) 7748 tp_features.mixer_no_level_control = 0; 7749 else 7750 return 1; /* no mixer */ 7751 break; 7752 case TPACPI_VOL_CAP_VOLMUTE: 7753 tp_features.mixer_no_level_control = 0; 7754 break; 7755 case TPACPI_VOL_CAP_MUTEONLY: 7756 tp_features.mixer_no_level_control = 1; 7757 break; 7758 default: 7759 return 1; 7760 } 7761 7762 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7763 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7764 "using user-supplied volume_capabilities=%d\n", 7765 volume_capabilities); 7766 7767 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7768 volume_mode == TPACPI_VOL_MODE_MAX) { 7769 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7770 7771 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7772 "driver auto-selected volume_mode=%d\n", 7773 volume_mode); 7774 } else { 7775 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7776 "using user-supplied volume_mode=%d\n", 7777 volume_mode); 7778 } 7779 7780 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7781 "mute is supported, volume control is %s\n", 7782 str_supported(!tp_features.mixer_no_level_control)); 7783 7784 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7785 software_mute_active = true; 7786 } else { 7787 rc = volume_create_alsa_mixer(); 7788 if (rc) { 7789 pr_err("Could not create the ALSA mixer interface\n"); 7790 return rc; 7791 } 7792 7793 pr_info("Console audio control enabled, mode: %s\n", 7794 (volume_control_allowed) ? 7795 "override (read/write)" : 7796 "monitor (read only)"); 7797 } 7798 7799 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7800 "registering volume hotkeys as change notification\n"); 7801 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7802 | TP_ACPI_HKEY_VOLUP_MASK 7803 | TP_ACPI_HKEY_VOLDWN_MASK 7804 | TP_ACPI_HKEY_MUTE_MASK); 7805 7806 return 0; 7807} 7808 7809static int volume_read(struct seq_file *m) 7810{ 7811 u8 status; 7812 7813 if (volume_get_status(&status) < 0) { 7814 seq_printf(m, "level:\t\tunreadable\n"); 7815 } else { 7816 if (tp_features.mixer_no_level_control) 7817 seq_printf(m, "level:\t\tunsupported\n"); 7818 else 7819 seq_printf(m, "level:\t\t%d\n", 7820 status & TP_EC_AUDIO_LVL_MSK); 7821 7822 seq_printf(m, "mute:\t\t%s\n", 7823 onoff(status, TP_EC_AUDIO_MUTESW)); 7824 7825 if (volume_control_allowed) { 7826 seq_printf(m, "commands:\tunmute, mute\n"); 7827 if (!tp_features.mixer_no_level_control) { 7828 seq_printf(m, "commands:\tup, down\n"); 7829 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7830 TP_EC_VOLUME_MAX); 7831 } 7832 } 7833 } 7834 7835 return 0; 7836} 7837 7838static int volume_write(char *buf) 7839{ 7840 u8 s; 7841 u8 new_level, new_mute; 7842 int l; 7843 char *cmd; 7844 int rc; 7845 7846 /* 7847 * We do allow volume control at driver startup, so that the 7848 * user can set initial state through the volume=... parameter hack. 7849 */ 7850 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7851 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7852 tp_warned.volume_ctrl_forbidden = 1; 7853 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7854 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7855 } 7856 return -EPERM; 7857 } 7858 7859 rc = volume_get_status(&s); 7860 if (rc < 0) 7861 return rc; 7862 7863 new_level = s & TP_EC_AUDIO_LVL_MSK; 7864 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7865 7866 while ((cmd = strsep(&buf, ","))) { 7867 if (!tp_features.mixer_no_level_control) { 7868 if (strlencmp(cmd, "up") == 0) { 7869 if (new_mute) 7870 new_mute = 0; 7871 else if (new_level < TP_EC_VOLUME_MAX) 7872 new_level++; 7873 continue; 7874 } else if (strlencmp(cmd, "down") == 0) { 7875 if (new_mute) 7876 new_mute = 0; 7877 else if (new_level > 0) 7878 new_level--; 7879 continue; 7880 } else if (sscanf(cmd, "level %u", &l) == 1 && 7881 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7882 new_level = l; 7883 continue; 7884 } 7885 } 7886 if (strlencmp(cmd, "mute") == 0) 7887 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7888 else if (strlencmp(cmd, "unmute") == 0) 7889 new_mute = 0; 7890 else 7891 return -EINVAL; 7892 } 7893 7894 if (tp_features.mixer_no_level_control) { 7895 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7896 new_mute ? "" : "un"); 7897 rc = volume_set_mute(!!new_mute); 7898 } else { 7899 tpacpi_disclose_usertask("procfs volume", 7900 "%smute and set level to %d\n", 7901 new_mute ? "" : "un", new_level); 7902 rc = volume_set_status(new_mute | new_level); 7903 } 7904 volume_alsa_notify_change(); 7905 7906 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7907} 7908 7909static struct ibm_struct volume_driver_data = { 7910 .name = "volume", 7911 .read = volume_read, 7912 .write = volume_write, 7913 .exit = volume_exit, 7914 .suspend = volume_suspend, 7915 .resume = volume_resume, 7916 .shutdown = volume_shutdown, 7917}; 7918 7919#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7920 7921#define alsa_card NULL 7922 7923static inline void volume_alsa_notify_change(void) 7924{ 7925} 7926 7927static int __init volume_init(struct ibm_init_struct *iibm) 7928{ 7929 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7930 7931 return 1; 7932} 7933 7934static struct ibm_struct volume_driver_data = { 7935 .name = "volume", 7936}; 7937 7938#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7939 7940/************************************************************************* 7941 * Fan subdriver 7942 */ 7943 7944/* 7945 * FAN ACCESS MODES 7946 * 7947 * TPACPI_FAN_RD_ACPI_GFAN: 7948 * ACPI GFAN method: returns fan level 7949 * 7950 * see TPACPI_FAN_WR_ACPI_SFAN 7951 * EC 0x2f (HFSP) not available if GFAN exists 7952 * 7953 * TPACPI_FAN_WR_ACPI_SFAN: 7954 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7955 * 7956 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7957 * it for writing. 7958 * 7959 * TPACPI_FAN_WR_TPEC: 7960 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7961 * Supported on almost all ThinkPads 7962 * 7963 * Fan speed changes of any sort (including those caused by the 7964 * disengaged mode) are usually done slowly by the firmware as the 7965 * maximum amount of fan duty cycle change per second seems to be 7966 * limited. 7967 * 7968 * Reading is not available if GFAN exists. 7969 * Writing is not available if SFAN exists. 7970 * 7971 * Bits 7972 * 7 automatic mode engaged; 7973 * (default operation mode of the ThinkPad) 7974 * fan level is ignored in this mode. 7975 * 6 full speed mode (takes precedence over bit 7); 7976 * not available on all thinkpads. May disable 7977 * the tachometer while the fan controller ramps up 7978 * the speed (which can take up to a few *minutes*). 7979 * Speeds up fan to 100% duty-cycle, which is far above 7980 * the standard RPM levels. It is not impossible that 7981 * it could cause hardware damage. 7982 * 5-3 unused in some models. Extra bits for fan level 7983 * in others, but still useless as all values above 7984 * 7 map to the same speed as level 7 in these models. 7985 * 2-0 fan level (0..7 usually) 7986 * 0x00 = stop 7987 * 0x07 = max (set when temperatures critical) 7988 * Some ThinkPads may have other levels, see 7989 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7990 * 7991 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7992 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7993 * does so, its initial value is meaningless (0x07). 7994 * 7995 * For firmware bugs, refer to: 7996 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7997 * 7998 * ---- 7999 * 8000 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 8001 * Main fan tachometer reading (in RPM) 8002 * 8003 * This register is present on all ThinkPads with a new-style EC, and 8004 * it is known not to be present on the A21m/e, and T22, as there is 8005 * something else in offset 0x84 according to the ACPI DSDT. Other 8006 * ThinkPads from this same time period (and earlier) probably lack the 8007 * tachometer as well. 8008 * 8009 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 8010 * was never fixed by IBM to report the EC firmware version string 8011 * probably support the tachometer (like the early X models), so 8012 * detecting it is quite hard. We need more data to know for sure. 8013 * 8014 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 8015 * might result. 8016 * 8017 * FIRMWARE BUG: may go stale while the EC is switching to full speed 8018 * mode. 8019 * 8020 * For firmware bugs, refer to: 8021 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 8022 * 8023 * ---- 8024 * 8025 * ThinkPad EC register 0x31 bit 0 (only on select models) 8026 * 8027 * When bit 0 of EC register 0x31 is zero, the tachometer registers 8028 * show the speed of the main fan. When bit 0 of EC register 0x31 8029 * is one, the tachometer registers show the speed of the auxiliary 8030 * fan. 8031 * 8032 * Fan control seems to affect both fans, regardless of the state 8033 * of this bit. 8034 * 8035 * So far, only the firmware for the X60/X61 non-tablet versions 8036 * seem to support this (firmware TP-7M). 8037 * 8038 * TPACPI_FAN_WR_ACPI_FANS: 8039 * ThinkPad X31, X40, X41. Not available in the X60. 8040 * 8041 * FANS ACPI handle: takes three arguments: low speed, medium speed, 8042 * high speed. ACPI DSDT seems to map these three speeds to levels 8043 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 8044 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 8045 * 8046 * The speeds are stored on handles 8047 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 8048 * 8049 * There are three default speed sets, accessible as handles: 8050 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 8051 * 8052 * ACPI DSDT switches which set is in use depending on various 8053 * factors. 8054 * 8055 * TPACPI_FAN_WR_TPEC is also available and should be used to 8056 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 8057 * but the ACPI tables just mention level 7. 8058 */ 8059 8060enum { /* Fan control constants */ 8061 fan_status_offset = 0x2f, /* EC register 0x2f */ 8062 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 8063 * 0x84 must be read before 0x85 */ 8064 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 8065 bit 0 selects which fan is active */ 8066 8067 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 8068 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 8069 8070 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 8071}; 8072 8073enum fan_status_access_mode { 8074 TPACPI_FAN_NONE = 0, /* No fan status or control */ 8075 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 8076 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 8077}; 8078 8079enum fan_control_access_mode { 8080 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 8081 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 8082 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 8083 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 8084}; 8085 8086enum fan_control_commands { 8087 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 8088 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 8089 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 8090 * and also watchdog cmd */ 8091}; 8092 8093static bool fan_control_allowed; 8094 8095static enum fan_status_access_mode fan_status_access_mode; 8096static enum fan_control_access_mode fan_control_access_mode; 8097static enum fan_control_commands fan_control_commands; 8098 8099static u8 fan_control_initial_status; 8100static u8 fan_control_desired_level; 8101static u8 fan_control_resume_level; 8102static int fan_watchdog_maxinterval; 8103 8104static struct mutex fan_mutex; 8105 8106static void fan_watchdog_fire(struct work_struct *ignored); 8107static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 8108 8109TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 8110TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 8111 "\\FSPD", /* 600e/x, 770e, 770x */ 8112 ); /* all others */ 8113TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8114 "JFNS", /* 770x-JL */ 8115 ); /* all others */ 8116 8117/* 8118 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8119 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8120 * be in auto mode (0x80). 8121 * 8122 * This is corrected by any write to HFSP either by the driver, or 8123 * by the firmware. 8124 * 8125 * We assume 0x07 really means auto mode while this quirk is active, 8126 * as this is far more likely than the ThinkPad being in level 7, 8127 * which is only used by the firmware during thermal emergencies. 8128 * 8129 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8130 * TP-70 (T43, R52), which are known to be buggy. 8131 */ 8132 8133static void fan_quirk1_setup(void) 8134{ 8135 if (fan_control_initial_status == 0x07) { 8136 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8137 tp_features.fan_ctrl_status_undef = 1; 8138 } 8139} 8140 8141static void fan_quirk1_handle(u8 *fan_status) 8142{ 8143 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8144 if (*fan_status != fan_control_initial_status) { 8145 /* something changed the HFSP regisnter since 8146 * driver init time, so it is not undefined 8147 * anymore */ 8148 tp_features.fan_ctrl_status_undef = 0; 8149 } else { 8150 /* Return most likely status. In fact, it 8151 * might be the only possible status */ 8152 *fan_status = TP_EC_FAN_AUTO; 8153 } 8154 } 8155} 8156 8157/* Select main fan on X60/X61, NOOP on others */ 8158static bool fan_select_fan1(void) 8159{ 8160 if (tp_features.second_fan) { 8161 u8 val; 8162 8163 if (ec_read(fan_select_offset, &val) < 0) 8164 return false; 8165 val &= 0xFEU; 8166 if (ec_write(fan_select_offset, val) < 0) 8167 return false; 8168 } 8169 return true; 8170} 8171 8172/* Select secondary fan on X60/X61 */ 8173static bool fan_select_fan2(void) 8174{ 8175 u8 val; 8176 8177 if (!tp_features.second_fan) 8178 return false; 8179 8180 if (ec_read(fan_select_offset, &val) < 0) 8181 return false; 8182 val |= 0x01U; 8183 if (ec_write(fan_select_offset, val) < 0) 8184 return false; 8185 8186 return true; 8187} 8188 8189/* 8190 * Call with fan_mutex held 8191 */ 8192static void fan_update_desired_level(u8 status) 8193{ 8194 if ((status & 8195 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8196 if (status > 7) 8197 fan_control_desired_level = 7; 8198 else 8199 fan_control_desired_level = status; 8200 } 8201} 8202 8203static int fan_get_status(u8 *status) 8204{ 8205 u8 s; 8206 8207 /* TODO: 8208 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8209 8210 switch (fan_status_access_mode) { 8211 case TPACPI_FAN_RD_ACPI_GFAN: { 8212 /* 570, 600e/x, 770e, 770x */ 8213 int res; 8214 8215 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8216 return -EIO; 8217 8218 if (likely(status)) 8219 *status = res & 0x07; 8220 8221 break; 8222 } 8223 case TPACPI_FAN_RD_TPEC: 8224 /* all except 570, 600e/x, 770e, 770x */ 8225 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8226 return -EIO; 8227 8228 if (likely(status)) { 8229 *status = s; 8230 fan_quirk1_handle(status); 8231 } 8232 8233 break; 8234 8235 default: 8236 return -ENXIO; 8237 } 8238 8239 return 0; 8240} 8241 8242static int fan_get_status_safe(u8 *status) 8243{ 8244 int rc; 8245 u8 s; 8246 8247 if (mutex_lock_killable(&fan_mutex)) 8248 return -ERESTARTSYS; 8249 rc = fan_get_status(&s); 8250 if (!rc) 8251 fan_update_desired_level(s); 8252 mutex_unlock(&fan_mutex); 8253 8254 if (rc) 8255 return rc; 8256 if (status) 8257 *status = s; 8258 8259 return 0; 8260} 8261 8262static int fan_get_speed(unsigned int *speed) 8263{ 8264 u8 hi, lo; 8265 8266 switch (fan_status_access_mode) { 8267 case TPACPI_FAN_RD_TPEC: 8268 /* all except 570, 600e/x, 770e, 770x */ 8269 if (unlikely(!fan_select_fan1())) 8270 return -EIO; 8271 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8272 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8273 return -EIO; 8274 8275 if (likely(speed)) 8276 *speed = (hi << 8) | lo; 8277 8278 break; 8279 8280 default: 8281 return -ENXIO; 8282 } 8283 8284 return 0; 8285} 8286 8287static int fan2_get_speed(unsigned int *speed) 8288{ 8289 u8 hi, lo; 8290 bool rc; 8291 8292 switch (fan_status_access_mode) { 8293 case TPACPI_FAN_RD_TPEC: 8294 /* all except 570, 600e/x, 770e, 770x */ 8295 if (unlikely(!fan_select_fan2())) 8296 return -EIO; 8297 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8298 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8299 fan_select_fan1(); /* play it safe */ 8300 if (rc) 8301 return -EIO; 8302 8303 if (likely(speed)) 8304 *speed = (hi << 8) | lo; 8305 8306 break; 8307 8308 default: 8309 return -ENXIO; 8310 } 8311 8312 return 0; 8313} 8314 8315static int fan_set_level(int level) 8316{ 8317 if (!fan_control_allowed) 8318 return -EPERM; 8319 8320 switch (fan_control_access_mode) { 8321 case TPACPI_FAN_WR_ACPI_SFAN: 8322 if ((level < 0) || (level > 7)) 8323 return -EINVAL; 8324 8325 if (tp_features.second_fan_ctl) { 8326 if (!fan_select_fan2() || 8327 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8328 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8329 tp_features.second_fan_ctl = 0; 8330 } 8331 fan_select_fan1(); 8332 } 8333 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8334 return -EIO; 8335 break; 8336 8337 case TPACPI_FAN_WR_ACPI_FANS: 8338 case TPACPI_FAN_WR_TPEC: 8339 if (!(level & TP_EC_FAN_AUTO) && 8340 !(level & TP_EC_FAN_FULLSPEED) && 8341 ((level < 0) || (level > 7))) 8342 return -EINVAL; 8343 8344 /* safety net should the EC not support AUTO 8345 * or FULLSPEED mode bits and just ignore them */ 8346 if (level & TP_EC_FAN_FULLSPEED) 8347 level |= 7; /* safety min speed 7 */ 8348 else if (level & TP_EC_FAN_AUTO) 8349 level |= 4; /* safety min speed 4 */ 8350 8351 if (tp_features.second_fan_ctl) { 8352 if (!fan_select_fan2() || 8353 !acpi_ec_write(fan_status_offset, level)) { 8354 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8355 tp_features.second_fan_ctl = 0; 8356 } 8357 fan_select_fan1(); 8358 8359 } 8360 if (!acpi_ec_write(fan_status_offset, level)) 8361 return -EIO; 8362 else 8363 tp_features.fan_ctrl_status_undef = 0; 8364 break; 8365 8366 default: 8367 return -ENXIO; 8368 } 8369 8370 vdbg_printk(TPACPI_DBG_FAN, 8371 "fan control: set fan control register to 0x%02x\n", level); 8372 return 0; 8373} 8374 8375static int fan_set_level_safe(int level) 8376{ 8377 int rc; 8378 8379 if (!fan_control_allowed) 8380 return -EPERM; 8381 8382 if (mutex_lock_killable(&fan_mutex)) 8383 return -ERESTARTSYS; 8384 8385 if (level == TPACPI_FAN_LAST_LEVEL) 8386 level = fan_control_desired_level; 8387 8388 rc = fan_set_level(level); 8389 if (!rc) 8390 fan_update_desired_level(level); 8391 8392 mutex_unlock(&fan_mutex); 8393 return rc; 8394} 8395 8396static int fan_set_enable(void) 8397{ 8398 u8 s; 8399 int rc; 8400 8401 if (!fan_control_allowed) 8402 return -EPERM; 8403 8404 if (mutex_lock_killable(&fan_mutex)) 8405 return -ERESTARTSYS; 8406 8407 switch (fan_control_access_mode) { 8408 case TPACPI_FAN_WR_ACPI_FANS: 8409 case TPACPI_FAN_WR_TPEC: 8410 rc = fan_get_status(&s); 8411 if (rc < 0) 8412 break; 8413 8414 /* Don't go out of emergency fan mode */ 8415 if (s != 7) { 8416 s &= 0x07; 8417 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8418 } 8419 8420 if (!acpi_ec_write(fan_status_offset, s)) 8421 rc = -EIO; 8422 else { 8423 tp_features.fan_ctrl_status_undef = 0; 8424 rc = 0; 8425 } 8426 break; 8427 8428 case TPACPI_FAN_WR_ACPI_SFAN: 8429 rc = fan_get_status(&s); 8430 if (rc < 0) 8431 break; 8432 8433 s &= 0x07; 8434 8435 /* Set fan to at least level 4 */ 8436 s |= 4; 8437 8438 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8439 rc = -EIO; 8440 else 8441 rc = 0; 8442 break; 8443 8444 default: 8445 rc = -ENXIO; 8446 } 8447 8448 mutex_unlock(&fan_mutex); 8449 8450 if (!rc) 8451 vdbg_printk(TPACPI_DBG_FAN, 8452 "fan control: set fan control register to 0x%02x\n", 8453 s); 8454 return rc; 8455} 8456 8457static int fan_set_disable(void) 8458{ 8459 int rc; 8460 8461 if (!fan_control_allowed) 8462 return -EPERM; 8463 8464 if (mutex_lock_killable(&fan_mutex)) 8465 return -ERESTARTSYS; 8466 8467 rc = 0; 8468 switch (fan_control_access_mode) { 8469 case TPACPI_FAN_WR_ACPI_FANS: 8470 case TPACPI_FAN_WR_TPEC: 8471 if (!acpi_ec_write(fan_status_offset, 0x00)) 8472 rc = -EIO; 8473 else { 8474 fan_control_desired_level = 0; 8475 tp_features.fan_ctrl_status_undef = 0; 8476 } 8477 break; 8478 8479 case TPACPI_FAN_WR_ACPI_SFAN: 8480 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8481 rc = -EIO; 8482 else 8483 fan_control_desired_level = 0; 8484 break; 8485 8486 default: 8487 rc = -ENXIO; 8488 } 8489 8490 if (!rc) 8491 vdbg_printk(TPACPI_DBG_FAN, 8492 "fan control: set fan control register to 0\n"); 8493 8494 mutex_unlock(&fan_mutex); 8495 return rc; 8496} 8497 8498static int fan_set_speed(int speed) 8499{ 8500 int rc; 8501 8502 if (!fan_control_allowed) 8503 return -EPERM; 8504 8505 if (mutex_lock_killable(&fan_mutex)) 8506 return -ERESTARTSYS; 8507 8508 rc = 0; 8509 switch (fan_control_access_mode) { 8510 case TPACPI_FAN_WR_ACPI_FANS: 8511 if (speed >= 0 && speed <= 65535) { 8512 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8513 speed, speed, speed)) 8514 rc = -EIO; 8515 } else 8516 rc = -EINVAL; 8517 break; 8518 8519 default: 8520 rc = -ENXIO; 8521 } 8522 8523 mutex_unlock(&fan_mutex); 8524 return rc; 8525} 8526 8527static void fan_watchdog_reset(void) 8528{ 8529 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8530 return; 8531 8532 if (fan_watchdog_maxinterval > 0 && 8533 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8534 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8535 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8536 else 8537 cancel_delayed_work(&fan_watchdog_task); 8538} 8539 8540static void fan_watchdog_fire(struct work_struct *ignored) 8541{ 8542 int rc; 8543 8544 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8545 return; 8546 8547 pr_notice("fan watchdog: enabling fan\n"); 8548 rc = fan_set_enable(); 8549 if (rc < 0) { 8550 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8551 rc); 8552 /* reschedule for later */ 8553 fan_watchdog_reset(); 8554 } 8555} 8556 8557/* 8558 * SYSFS fan layout: hwmon compatible (device) 8559 * 8560 * pwm*_enable: 8561 * 0: "disengaged" mode 8562 * 1: manual mode 8563 * 2: native EC "auto" mode (recommended, hardware default) 8564 * 8565 * pwm*: set speed in manual mode, ignored otherwise. 8566 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8567 * interpolation. 8568 * 8569 * fan*_input: tachometer reading, RPM 8570 * 8571 * 8572 * SYSFS fan layout: extensions 8573 * 8574 * fan_watchdog (driver): 8575 * fan watchdog interval in seconds, 0 disables (default), max 120 8576 */ 8577 8578/* sysfs fan pwm1_enable ----------------------------------------------- */ 8579static ssize_t fan_pwm1_enable_show(struct device *dev, 8580 struct device_attribute *attr, 8581 char *buf) 8582{ 8583 int res, mode; 8584 u8 status; 8585 8586 res = fan_get_status_safe(&status); 8587 if (res) 8588 return res; 8589 8590 if (status & TP_EC_FAN_FULLSPEED) { 8591 mode = 0; 8592 } else if (status & TP_EC_FAN_AUTO) { 8593 mode = 2; 8594 } else 8595 mode = 1; 8596 8597 return snprintf(buf, PAGE_SIZE, "%d\n", mode); 8598} 8599 8600static ssize_t fan_pwm1_enable_store(struct device *dev, 8601 struct device_attribute *attr, 8602 const char *buf, size_t count) 8603{ 8604 unsigned long t; 8605 int res, level; 8606 8607 if (parse_strtoul(buf, 2, &t)) 8608 return -EINVAL; 8609 8610 tpacpi_disclose_usertask("hwmon pwm1_enable", 8611 "set fan mode to %lu\n", t); 8612 8613 switch (t) { 8614 case 0: 8615 level = TP_EC_FAN_FULLSPEED; 8616 break; 8617 case 1: 8618 level = TPACPI_FAN_LAST_LEVEL; 8619 break; 8620 case 2: 8621 level = TP_EC_FAN_AUTO; 8622 break; 8623 case 3: 8624 /* reserved for software-controlled auto mode */ 8625 return -ENOSYS; 8626 default: 8627 return -EINVAL; 8628 } 8629 8630 res = fan_set_level_safe(level); 8631 if (res == -ENXIO) 8632 return -EINVAL; 8633 else if (res < 0) 8634 return res; 8635 8636 fan_watchdog_reset(); 8637 8638 return count; 8639} 8640 8641static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8642 fan_pwm1_enable_show, fan_pwm1_enable_store); 8643 8644/* sysfs fan pwm1 ------------------------------------------------------ */ 8645static ssize_t fan_pwm1_show(struct device *dev, 8646 struct device_attribute *attr, 8647 char *buf) 8648{ 8649 int res; 8650 u8 status; 8651 8652 res = fan_get_status_safe(&status); 8653 if (res) 8654 return res; 8655 8656 if ((status & 8657 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8658 status = fan_control_desired_level; 8659 8660 if (status > 7) 8661 status = 7; 8662 8663 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); 8664} 8665 8666static ssize_t fan_pwm1_store(struct device *dev, 8667 struct device_attribute *attr, 8668 const char *buf, size_t count) 8669{ 8670 unsigned long s; 8671 int rc; 8672 u8 status, newlevel; 8673 8674 if (parse_strtoul(buf, 255, &s)) 8675 return -EINVAL; 8676 8677 tpacpi_disclose_usertask("hwmon pwm1", 8678 "set fan speed to %lu\n", s); 8679 8680 /* scale down from 0-255 to 0-7 */ 8681 newlevel = (s >> 5) & 0x07; 8682 8683 if (mutex_lock_killable(&fan_mutex)) 8684 return -ERESTARTSYS; 8685 8686 rc = fan_get_status(&status); 8687 if (!rc && (status & 8688 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8689 rc = fan_set_level(newlevel); 8690 if (rc == -ENXIO) 8691 rc = -EINVAL; 8692 else if (!rc) { 8693 fan_update_desired_level(newlevel); 8694 fan_watchdog_reset(); 8695 } 8696 } 8697 8698 mutex_unlock(&fan_mutex); 8699 return (rc) ? rc : count; 8700} 8701 8702static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8703 8704/* sysfs fan fan1_input ------------------------------------------------ */ 8705static ssize_t fan_fan1_input_show(struct device *dev, 8706 struct device_attribute *attr, 8707 char *buf) 8708{ 8709 int res; 8710 unsigned int speed; 8711 8712 res = fan_get_speed(&speed); 8713 if (res < 0) 8714 return res; 8715 8716 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8717} 8718 8719static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8720 8721/* sysfs fan fan2_input ------------------------------------------------ */ 8722static ssize_t fan_fan2_input_show(struct device *dev, 8723 struct device_attribute *attr, 8724 char *buf) 8725{ 8726 int res; 8727 unsigned int speed; 8728 8729 res = fan2_get_speed(&speed); 8730 if (res < 0) 8731 return res; 8732 8733 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8734} 8735 8736static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8737 8738/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8739static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8740{ 8741 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); 8742} 8743 8744static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8745 size_t count) 8746{ 8747 unsigned long t; 8748 8749 if (parse_strtoul(buf, 120, &t)) 8750 return -EINVAL; 8751 8752 if (!fan_control_allowed) 8753 return -EPERM; 8754 8755 fan_watchdog_maxinterval = t; 8756 fan_watchdog_reset(); 8757 8758 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8759 8760 return count; 8761} 8762static DRIVER_ATTR_RW(fan_watchdog); 8763 8764/* --------------------------------------------------------------------- */ 8765static struct attribute *fan_attributes[] = { 8766 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr, 8767 &dev_attr_fan1_input.attr, 8768 NULL, /* for fan2_input */ 8769 NULL 8770}; 8771 8772static const struct attribute_group fan_attr_group = { 8773 .attrs = fan_attributes, 8774}; 8775 8776#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ 8777#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8778#define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8779 8780static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8781 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8782 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8783 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8784 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8785 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8786 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8787 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8788 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8789 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8790 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8791 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8792 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ 8793 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8794 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8795 TPACPI_Q_LNV3('N', '2', 'V', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (3nd gen) */ 8796 TPACPI_Q_LNV3('N', '4', '0', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (4nd gen) */ 8797 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8798 TPACPI_Q_LNV3('N', '3', '2', TPACPI_FAN_2CTL), /* X1 Carbon (9th gen) */ 8799}; 8800 8801static int __init fan_init(struct ibm_init_struct *iibm) 8802{ 8803 int rc; 8804 unsigned long quirks; 8805 8806 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8807 "initializing fan subdriver\n"); 8808 8809 mutex_init(&fan_mutex); 8810 fan_status_access_mode = TPACPI_FAN_NONE; 8811 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8812 fan_control_commands = 0; 8813 fan_watchdog_maxinterval = 0; 8814 tp_features.fan_ctrl_status_undef = 0; 8815 tp_features.second_fan = 0; 8816 tp_features.second_fan_ctl = 0; 8817 fan_control_desired_level = 7; 8818 8819 if (tpacpi_is_ibm()) { 8820 TPACPI_ACPIHANDLE_INIT(fans); 8821 TPACPI_ACPIHANDLE_INIT(gfan); 8822 TPACPI_ACPIHANDLE_INIT(sfan); 8823 } 8824 8825 quirks = tpacpi_check_quirks(fan_quirk_table, 8826 ARRAY_SIZE(fan_quirk_table)); 8827 8828 if (gfan_handle) { 8829 /* 570, 600e/x, 770e, 770x */ 8830 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8831 } else { 8832 /* all other ThinkPads: note that even old-style 8833 * ThinkPad ECs supports the fan control register */ 8834 if (likely(acpi_ec_read(fan_status_offset, 8835 &fan_control_initial_status))) { 8836 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 8837 if (quirks & TPACPI_FAN_Q1) 8838 fan_quirk1_setup(); 8839 if (quirks & TPACPI_FAN_2FAN) { 8840 tp_features.second_fan = 1; 8841 pr_info("secondary fan support enabled\n"); 8842 } 8843 if (quirks & TPACPI_FAN_2CTL) { 8844 tp_features.second_fan = 1; 8845 tp_features.second_fan_ctl = 1; 8846 pr_info("secondary fan control enabled\n"); 8847 } 8848 } else { 8849 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8850 return 1; 8851 } 8852 } 8853 8854 if (sfan_handle) { 8855 /* 570, 770x-JL */ 8856 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8857 fan_control_commands |= 8858 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8859 } else { 8860 if (!gfan_handle) { 8861 /* gfan without sfan means no fan control */ 8862 /* all other models implement TP EC 0x2f control */ 8863 8864 if (fans_handle) { 8865 /* X31, X40, X41 */ 8866 fan_control_access_mode = 8867 TPACPI_FAN_WR_ACPI_FANS; 8868 fan_control_commands |= 8869 TPACPI_FAN_CMD_SPEED | 8870 TPACPI_FAN_CMD_LEVEL | 8871 TPACPI_FAN_CMD_ENABLE; 8872 } else { 8873 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8874 fan_control_commands |= 8875 TPACPI_FAN_CMD_LEVEL | 8876 TPACPI_FAN_CMD_ENABLE; 8877 } 8878 } 8879 } 8880 8881 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8882 "fan is %s, modes %d, %d\n", 8883 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8884 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8885 fan_status_access_mode, fan_control_access_mode); 8886 8887 /* fan control master switch */ 8888 if (!fan_control_allowed) { 8889 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8890 fan_control_commands = 0; 8891 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8892 "fan control features disabled by parameter\n"); 8893 } 8894 8895 /* update fan_control_desired_level */ 8896 if (fan_status_access_mode != TPACPI_FAN_NONE) 8897 fan_get_status_safe(NULL); 8898 8899 if (fan_status_access_mode != TPACPI_FAN_NONE || 8900 fan_control_access_mode != TPACPI_FAN_WR_NONE) { 8901 if (tp_features.second_fan) { 8902 /* attach second fan tachometer */ 8903 fan_attributes[ARRAY_SIZE(fan_attributes)-2] = 8904 &dev_attr_fan2_input.attr; 8905 } 8906 rc = sysfs_create_group(&tpacpi_hwmon->kobj, 8907 &fan_attr_group); 8908 if (rc < 0) 8909 return rc; 8910 8911 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, 8912 &driver_attr_fan_watchdog); 8913 if (rc < 0) { 8914 sysfs_remove_group(&tpacpi_hwmon->kobj, 8915 &fan_attr_group); 8916 return rc; 8917 } 8918 return 0; 8919 } else 8920 return 1; 8921} 8922 8923static void fan_exit(void) 8924{ 8925 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8926 "cancelling any pending fan watchdog tasks\n"); 8927 8928 /* FIXME: can we really do this unconditionally? */ 8929 sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group); 8930 driver_remove_file(&tpacpi_hwmon_pdriver.driver, 8931 &driver_attr_fan_watchdog); 8932 8933 cancel_delayed_work(&fan_watchdog_task); 8934 flush_workqueue(tpacpi_wq); 8935} 8936 8937static void fan_suspend(void) 8938{ 8939 int rc; 8940 8941 if (!fan_control_allowed) 8942 return; 8943 8944 /* Store fan status in cache */ 8945 fan_control_resume_level = 0; 8946 rc = fan_get_status_safe(&fan_control_resume_level); 8947 if (rc < 0) 8948 pr_notice("failed to read fan level for later restore during resume: %d\n", 8949 rc); 8950 8951 /* if it is undefined, don't attempt to restore it. 8952 * KEEP THIS LAST */ 8953 if (tp_features.fan_ctrl_status_undef) 8954 fan_control_resume_level = 0; 8955} 8956 8957static void fan_resume(void) 8958{ 8959 u8 current_level = 7; 8960 bool do_set = false; 8961 int rc; 8962 8963 /* DSDT *always* updates status on resume */ 8964 tp_features.fan_ctrl_status_undef = 0; 8965 8966 if (!fan_control_allowed || 8967 !fan_control_resume_level || 8968 (fan_get_status_safe(¤t_level) < 0)) 8969 return; 8970 8971 switch (fan_control_access_mode) { 8972 case TPACPI_FAN_WR_ACPI_SFAN: 8973 /* never decrease fan level */ 8974 do_set = (fan_control_resume_level > current_level); 8975 break; 8976 case TPACPI_FAN_WR_ACPI_FANS: 8977 case TPACPI_FAN_WR_TPEC: 8978 /* never decrease fan level, scale is: 8979 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 8980 * 8981 * We expect the firmware to set either 7 or AUTO, but we 8982 * handle FULLSPEED out of paranoia. 8983 * 8984 * So, we can safely only restore FULLSPEED or 7, anything 8985 * else could slow the fan. Restoring AUTO is useless, at 8986 * best that's exactly what the DSDT already set (it is the 8987 * slower it uses). 8988 * 8989 * Always keep in mind that the DSDT *will* have set the 8990 * fans to what the vendor supposes is the best level. We 8991 * muck with it only to speed the fan up. 8992 */ 8993 if (fan_control_resume_level != 7 && 8994 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 8995 return; 8996 else 8997 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 8998 (current_level != fan_control_resume_level); 8999 break; 9000 default: 9001 return; 9002 } 9003 if (do_set) { 9004 pr_notice("restoring fan level to 0x%02x\n", 9005 fan_control_resume_level); 9006 rc = fan_set_level_safe(fan_control_resume_level); 9007 if (rc < 0) 9008 pr_notice("failed to restore fan level: %d\n", rc); 9009 } 9010} 9011 9012static int fan_read(struct seq_file *m) 9013{ 9014 int rc; 9015 u8 status; 9016 unsigned int speed = 0; 9017 9018 switch (fan_status_access_mode) { 9019 case TPACPI_FAN_RD_ACPI_GFAN: 9020 /* 570, 600e/x, 770e, 770x */ 9021 rc = fan_get_status_safe(&status); 9022 if (rc < 0) 9023 return rc; 9024 9025 seq_printf(m, "status:\t\t%s\n" 9026 "level:\t\t%d\n", 9027 (status != 0) ? "enabled" : "disabled", status); 9028 break; 9029 9030 case TPACPI_FAN_RD_TPEC: 9031 /* all except 570, 600e/x, 770e, 770x */ 9032 rc = fan_get_status_safe(&status); 9033 if (rc < 0) 9034 return rc; 9035 9036 seq_printf(m, "status:\t\t%s\n", 9037 (status != 0) ? "enabled" : "disabled"); 9038 9039 rc = fan_get_speed(&speed); 9040 if (rc < 0) 9041 return rc; 9042 9043 seq_printf(m, "speed:\t\t%d\n", speed); 9044 9045 if (status & TP_EC_FAN_FULLSPEED) 9046 /* Disengaged mode takes precedence */ 9047 seq_printf(m, "level:\t\tdisengaged\n"); 9048 else if (status & TP_EC_FAN_AUTO) 9049 seq_printf(m, "level:\t\tauto\n"); 9050 else 9051 seq_printf(m, "level:\t\t%d\n", status); 9052 break; 9053 9054 case TPACPI_FAN_NONE: 9055 default: 9056 seq_printf(m, "status:\t\tnot supported\n"); 9057 } 9058 9059 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9060 seq_printf(m, "commands:\tlevel <level>"); 9061 9062 switch (fan_control_access_mode) { 9063 case TPACPI_FAN_WR_ACPI_SFAN: 9064 seq_printf(m, " (<level> is 0-7)\n"); 9065 break; 9066 9067 default: 9068 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9069 break; 9070 } 9071 } 9072 9073 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9074 seq_printf(m, "commands:\tenable, disable\n" 9075 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9076 9077 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9078 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9079 9080 return 0; 9081} 9082 9083static int fan_write_cmd_level(const char *cmd, int *rc) 9084{ 9085 int level; 9086 9087 if (strlencmp(cmd, "level auto") == 0) 9088 level = TP_EC_FAN_AUTO; 9089 else if ((strlencmp(cmd, "level disengaged") == 0) || 9090 (strlencmp(cmd, "level full-speed") == 0)) 9091 level = TP_EC_FAN_FULLSPEED; 9092 else if (sscanf(cmd, "level %d", &level) != 1) 9093 return 0; 9094 9095 *rc = fan_set_level_safe(level); 9096 if (*rc == -ENXIO) 9097 pr_err("level command accepted for unsupported access mode %d\n", 9098 fan_control_access_mode); 9099 else if (!*rc) 9100 tpacpi_disclose_usertask("procfs fan", 9101 "set level to %d\n", level); 9102 9103 return 1; 9104} 9105 9106static int fan_write_cmd_enable(const char *cmd, int *rc) 9107{ 9108 if (strlencmp(cmd, "enable") != 0) 9109 return 0; 9110 9111 *rc = fan_set_enable(); 9112 if (*rc == -ENXIO) 9113 pr_err("enable command accepted for unsupported access mode %d\n", 9114 fan_control_access_mode); 9115 else if (!*rc) 9116 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9117 9118 return 1; 9119} 9120 9121static int fan_write_cmd_disable(const char *cmd, int *rc) 9122{ 9123 if (strlencmp(cmd, "disable") != 0) 9124 return 0; 9125 9126 *rc = fan_set_disable(); 9127 if (*rc == -ENXIO) 9128 pr_err("disable command accepted for unsupported access mode %d\n", 9129 fan_control_access_mode); 9130 else if (!*rc) 9131 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9132 9133 return 1; 9134} 9135 9136static int fan_write_cmd_speed(const char *cmd, int *rc) 9137{ 9138 int speed; 9139 9140 /* TODO: 9141 * Support speed <low> <medium> <high> ? */ 9142 9143 if (sscanf(cmd, "speed %d", &speed) != 1) 9144 return 0; 9145 9146 *rc = fan_set_speed(speed); 9147 if (*rc == -ENXIO) 9148 pr_err("speed command accepted for unsupported access mode %d\n", 9149 fan_control_access_mode); 9150 else if (!*rc) 9151 tpacpi_disclose_usertask("procfs fan", 9152 "set speed to %d\n", speed); 9153 9154 return 1; 9155} 9156 9157static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9158{ 9159 int interval; 9160 9161 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9162 return 0; 9163 9164 if (interval < 0 || interval > 120) 9165 *rc = -EINVAL; 9166 else { 9167 fan_watchdog_maxinterval = interval; 9168 tpacpi_disclose_usertask("procfs fan", 9169 "set watchdog timer to %d\n", 9170 interval); 9171 } 9172 9173 return 1; 9174} 9175 9176static int fan_write(char *buf) 9177{ 9178 char *cmd; 9179 int rc = 0; 9180 9181 while (!rc && (cmd = strsep(&buf, ","))) { 9182 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9183 fan_write_cmd_level(cmd, &rc)) && 9184 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9185 (fan_write_cmd_enable(cmd, &rc) || 9186 fan_write_cmd_disable(cmd, &rc) || 9187 fan_write_cmd_watchdog(cmd, &rc))) && 9188 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9189 fan_write_cmd_speed(cmd, &rc)) 9190 ) 9191 rc = -EINVAL; 9192 else if (!rc) 9193 fan_watchdog_reset(); 9194 } 9195 9196 return rc; 9197} 9198 9199static struct ibm_struct fan_driver_data = { 9200 .name = "fan", 9201 .read = fan_read, 9202 .write = fan_write, 9203 .exit = fan_exit, 9204 .suspend = fan_suspend, 9205 .resume = fan_resume, 9206}; 9207 9208/************************************************************************* 9209 * Mute LED subdriver 9210 */ 9211 9212#define TPACPI_LED_MAX 2 9213 9214struct tp_led_table { 9215 acpi_string name; 9216 int on_value; 9217 int off_value; 9218 int state; 9219}; 9220 9221static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9222 [LED_AUDIO_MUTE] = { 9223 .name = "SSMS", 9224 .on_value = 1, 9225 .off_value = 0, 9226 }, 9227 [LED_AUDIO_MICMUTE] = { 9228 .name = "MMTS", 9229 .on_value = 2, 9230 .off_value = 0, 9231 }, 9232}; 9233 9234static int mute_led_on_off(struct tp_led_table *t, bool state) 9235{ 9236 acpi_handle temp; 9237 int output; 9238 9239 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9240 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9241 return -EIO; 9242 } 9243 9244 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9245 state ? t->on_value : t->off_value)) 9246 return -EIO; 9247 9248 t->state = state; 9249 return state; 9250} 9251 9252static int tpacpi_led_set(int whichled, bool on) 9253{ 9254 struct tp_led_table *t; 9255 9256 t = &led_tables[whichled]; 9257 if (t->state < 0 || t->state == on) 9258 return t->state; 9259 return mute_led_on_off(t, on); 9260} 9261 9262static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9263 enum led_brightness brightness) 9264{ 9265 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9266} 9267 9268static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9269 enum led_brightness brightness) 9270{ 9271 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9272} 9273 9274static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9275 [LED_AUDIO_MUTE] = { 9276 .name = "platform::mute", 9277 .max_brightness = 1, 9278 .brightness_set_blocking = tpacpi_led_mute_set, 9279 .default_trigger = "audio-mute", 9280 }, 9281 [LED_AUDIO_MICMUTE] = { 9282 .name = "platform::micmute", 9283 .max_brightness = 1, 9284 .brightness_set_blocking = tpacpi_led_micmute_set, 9285 .default_trigger = "audio-micmute", 9286 }, 9287}; 9288 9289static int mute_led_init(struct ibm_init_struct *iibm) 9290{ 9291 acpi_handle temp; 9292 int i, err; 9293 9294 for (i = 0; i < TPACPI_LED_MAX; i++) { 9295 struct tp_led_table *t = &led_tables[i]; 9296 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9297 t->state = -ENODEV; 9298 continue; 9299 } 9300 9301 mute_led_cdev[i].brightness = ledtrig_audio_get(i); 9302 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9303 if (err < 0) { 9304 while (i--) 9305 led_classdev_unregister(&mute_led_cdev[i]); 9306 return err; 9307 } 9308 } 9309 return 0; 9310} 9311 9312static void mute_led_exit(void) 9313{ 9314 int i; 9315 9316 for (i = 0; i < TPACPI_LED_MAX; i++) { 9317 led_classdev_unregister(&mute_led_cdev[i]); 9318 tpacpi_led_set(i, false); 9319 } 9320} 9321 9322static void mute_led_resume(void) 9323{ 9324 int i; 9325 9326 for (i = 0; i < TPACPI_LED_MAX; i++) { 9327 struct tp_led_table *t = &led_tables[i]; 9328 if (t->state >= 0) 9329 mute_led_on_off(t, t->state); 9330 } 9331} 9332 9333static struct ibm_struct mute_led_driver_data = { 9334 .name = "mute_led", 9335 .exit = mute_led_exit, 9336 .resume = mute_led_resume, 9337}; 9338 9339/* 9340 * Battery Wear Control Driver 9341 * Contact: Ognjen Galic <smclt30p@gmail.com> 9342 */ 9343 9344/* Metadata */ 9345 9346#define GET_START "BCTG" 9347#define SET_START "BCCS" 9348#define GET_STOP "BCSG" 9349#define SET_STOP "BCSS" 9350 9351enum { 9352 BAT_ANY = 0, 9353 BAT_PRIMARY = 1, 9354 BAT_SECONDARY = 2 9355}; 9356 9357enum { 9358 /* Error condition bit */ 9359 METHOD_ERR = BIT(31), 9360}; 9361 9362enum { 9363 /* This is used in the get/set helpers */ 9364 THRESHOLD_START, 9365 THRESHOLD_STOP, 9366}; 9367 9368struct tpacpi_battery_data { 9369 int charge_start; 9370 int start_support; 9371 int charge_stop; 9372 int stop_support; 9373}; 9374 9375struct tpacpi_battery_driver_data { 9376 struct tpacpi_battery_data batteries[3]; 9377 int individual_addressing; 9378}; 9379 9380static struct tpacpi_battery_driver_data battery_info; 9381 9382/* ACPI helpers/functions/probes */ 9383 9384/** 9385 * This evaluates a ACPI method call specific to the battery 9386 * ACPI extension. The specifics are that an error is marked 9387 * in the 32rd bit of the response, so we just check that here. 9388 */ 9389static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9390{ 9391 int response; 9392 9393 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9394 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9395 return AE_ERROR; 9396 } 9397 if (response & METHOD_ERR) { 9398 acpi_handle_err(hkey_handle, 9399 "%s evaluated but flagged as error", method); 9400 return AE_ERROR; 9401 } 9402 *ret = response; 9403 return AE_OK; 9404} 9405 9406static int tpacpi_battery_get(int what, int battery, int *ret) 9407{ 9408 switch (what) { 9409 case THRESHOLD_START: 9410 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) 9411 return -ENODEV; 9412 9413 /* The value is in the low 8 bits of the response */ 9414 *ret = *ret & 0xFF; 9415 return 0; 9416 case THRESHOLD_STOP: 9417 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) 9418 return -ENODEV; 9419 /* Value is in lower 8 bits */ 9420 *ret = *ret & 0xFF; 9421 /* 9422 * On the stop value, if we return 0 that 9423 * does not make any sense. 0 means Default, which 9424 * means that charging stops at 100%, so we return 9425 * that. 9426 */ 9427 if (*ret == 0) 9428 *ret = 100; 9429 return 0; 9430 default: 9431 pr_crit("wrong parameter: %d", what); 9432 return -EINVAL; 9433 } 9434} 9435 9436static int tpacpi_battery_set(int what, int battery, int value) 9437{ 9438 int param, ret; 9439 /* The first 8 bits are the value of the threshold */ 9440 param = value; 9441 /* The battery ID is in bits 8-9, 2 bits */ 9442 param |= battery << 8; 9443 9444 switch (what) { 9445 case THRESHOLD_START: 9446 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9447 pr_err("failed to set charge threshold on battery %d", 9448 battery); 9449 return -ENODEV; 9450 } 9451 return 0; 9452 case THRESHOLD_STOP: 9453 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9454 pr_err("failed to set stop threshold: %d", battery); 9455 return -ENODEV; 9456 } 9457 return 0; 9458 default: 9459 pr_crit("wrong parameter: %d", what); 9460 return -EINVAL; 9461 } 9462} 9463 9464static int tpacpi_battery_probe(int battery) 9465{ 9466 int ret = 0; 9467 9468 memset(&battery_info.batteries[battery], 0, 9469 sizeof(battery_info.batteries[battery])); 9470 9471 /* 9472 * 1) Get the current start threshold 9473 * 2) Check for support 9474 * 3) Get the current stop threshold 9475 * 4) Check for support 9476 */ 9477 if (acpi_has_method(hkey_handle, GET_START)) { 9478 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9479 pr_err("Error probing battery %d\n", battery); 9480 return -ENODEV; 9481 } 9482 /* Individual addressing is in bit 9 */ 9483 if (ret & BIT(9)) 9484 battery_info.individual_addressing = true; 9485 /* Support is marked in bit 8 */ 9486 if (ret & BIT(8)) 9487 battery_info.batteries[battery].start_support = 1; 9488 else 9489 return -ENODEV; 9490 if (tpacpi_battery_get(THRESHOLD_START, battery, 9491 &battery_info.batteries[battery].charge_start)) { 9492 pr_err("Error probing battery %d\n", battery); 9493 return -ENODEV; 9494 } 9495 } 9496 if (acpi_has_method(hkey_handle, GET_STOP)) { 9497 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9498 pr_err("Error probing battery stop; %d\n", battery); 9499 return -ENODEV; 9500 } 9501 /* Support is marked in bit 8 */ 9502 if (ret & BIT(8)) 9503 battery_info.batteries[battery].stop_support = 1; 9504 else 9505 return -ENODEV; 9506 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9507 &battery_info.batteries[battery].charge_stop)) { 9508 pr_err("Error probing battery stop: %d\n", battery); 9509 return -ENODEV; 9510 } 9511 } 9512 pr_info("battery %d registered (start %d, stop %d)", 9513 battery, 9514 battery_info.batteries[battery].charge_start, 9515 battery_info.batteries[battery].charge_stop); 9516 9517 return 0; 9518} 9519 9520/* General helper functions */ 9521 9522static int tpacpi_battery_get_id(const char *battery_name) 9523{ 9524 9525 if (strcmp(battery_name, "BAT0") == 0 || 9526 tp_features.battery_force_primary) 9527 return BAT_PRIMARY; 9528 if (strcmp(battery_name, "BAT1") == 0) 9529 return BAT_SECONDARY; 9530 /* 9531 * If for some reason the battery is not BAT0 nor is it 9532 * BAT1, we will assume it's the default, first battery, 9533 * AKA primary. 9534 */ 9535 pr_warn("unknown battery %s, assuming primary", battery_name); 9536 return BAT_PRIMARY; 9537} 9538 9539/* sysfs interface */ 9540 9541static ssize_t tpacpi_battery_store(int what, 9542 struct device *dev, 9543 const char *buf, size_t count) 9544{ 9545 struct power_supply *supply = to_power_supply(dev); 9546 unsigned long value; 9547 int battery, rval; 9548 /* 9549 * Some systems have support for more than 9550 * one battery. If that is the case, 9551 * tpacpi_battery_probe marked that addressing 9552 * them individually is supported, so we do that 9553 * based on the device struct. 9554 * 9555 * On systems that are not supported, we assume 9556 * the primary as most of the ACPI calls fail 9557 * with "Any Battery" as the parameter. 9558 */ 9559 if (battery_info.individual_addressing) 9560 /* BAT_PRIMARY or BAT_SECONDARY */ 9561 battery = tpacpi_battery_get_id(supply->desc->name); 9562 else 9563 battery = BAT_PRIMARY; 9564 9565 rval = kstrtoul(buf, 10, &value); 9566 if (rval) 9567 return rval; 9568 9569 switch (what) { 9570 case THRESHOLD_START: 9571 if (!battery_info.batteries[battery].start_support) 9572 return -ENODEV; 9573 /* valid values are [0, 99] */ 9574 if (value > 99) 9575 return -EINVAL; 9576 if (value > battery_info.batteries[battery].charge_stop) 9577 return -EINVAL; 9578 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9579 return -ENODEV; 9580 battery_info.batteries[battery].charge_start = value; 9581 return count; 9582 9583 case THRESHOLD_STOP: 9584 if (!battery_info.batteries[battery].stop_support) 9585 return -ENODEV; 9586 /* valid values are [1, 100] */ 9587 if (value < 1 || value > 100) 9588 return -EINVAL; 9589 if (value < battery_info.batteries[battery].charge_start) 9590 return -EINVAL; 9591 battery_info.batteries[battery].charge_stop = value; 9592 /* 9593 * When 100 is passed to stop, we need to flip 9594 * it to 0 as that the EC understands that as 9595 * "Default", which will charge to 100% 9596 */ 9597 if (value == 100) 9598 value = 0; 9599 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9600 return -EINVAL; 9601 return count; 9602 default: 9603 pr_crit("Wrong parameter: %d", what); 9604 return -EINVAL; 9605 } 9606 return count; 9607} 9608 9609static ssize_t tpacpi_battery_show(int what, 9610 struct device *dev, 9611 char *buf) 9612{ 9613 struct power_supply *supply = to_power_supply(dev); 9614 int ret, battery; 9615 /* 9616 * Some systems have support for more than 9617 * one battery. If that is the case, 9618 * tpacpi_battery_probe marked that addressing 9619 * them individually is supported, so we; 9620 * based on the device struct. 9621 * 9622 * On systems that are not supported, we assume 9623 * the primary as most of the ACPI calls fail 9624 * with "Any Battery" as the parameter. 9625 */ 9626 if (battery_info.individual_addressing) 9627 /* BAT_PRIMARY or BAT_SECONDARY */ 9628 battery = tpacpi_battery_get_id(supply->desc->name); 9629 else 9630 battery = BAT_PRIMARY; 9631 if (tpacpi_battery_get(what, battery, &ret)) 9632 return -ENODEV; 9633 return sprintf(buf, "%d\n", ret); 9634} 9635 9636static ssize_t charge_control_start_threshold_show(struct device *device, 9637 struct device_attribute *attr, 9638 char *buf) 9639{ 9640 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9641} 9642 9643static ssize_t charge_control_end_threshold_show(struct device *device, 9644 struct device_attribute *attr, 9645 char *buf) 9646{ 9647 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9648} 9649 9650static ssize_t charge_control_start_threshold_store(struct device *dev, 9651 struct device_attribute *attr, 9652 const char *buf, size_t count) 9653{ 9654 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9655} 9656 9657static ssize_t charge_control_end_threshold_store(struct device *dev, 9658 struct device_attribute *attr, 9659 const char *buf, size_t count) 9660{ 9661 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9662} 9663 9664static DEVICE_ATTR_RW(charge_control_start_threshold); 9665static DEVICE_ATTR_RW(charge_control_end_threshold); 9666static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9667 charge_start_threshold, 9668 0644, 9669 charge_control_start_threshold_show, 9670 charge_control_start_threshold_store 9671); 9672static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9673 charge_stop_threshold, 9674 0644, 9675 charge_control_end_threshold_show, 9676 charge_control_end_threshold_store 9677); 9678 9679static struct attribute *tpacpi_battery_attrs[] = { 9680 &dev_attr_charge_control_start_threshold.attr, 9681 &dev_attr_charge_control_end_threshold.attr, 9682 &dev_attr_charge_start_threshold.attr, 9683 &dev_attr_charge_stop_threshold.attr, 9684 NULL, 9685}; 9686 9687ATTRIBUTE_GROUPS(tpacpi_battery); 9688 9689/* ACPI battery hooking */ 9690 9691static int tpacpi_battery_add(struct power_supply *battery) 9692{ 9693 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9694 9695 if (tpacpi_battery_probe(batteryid)) 9696 return -ENODEV; 9697 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9698 return -ENODEV; 9699 return 0; 9700} 9701 9702static int tpacpi_battery_remove(struct power_supply *battery) 9703{ 9704 device_remove_groups(&battery->dev, tpacpi_battery_groups); 9705 return 0; 9706} 9707 9708static struct acpi_battery_hook battery_hook = { 9709 .add_battery = tpacpi_battery_add, 9710 .remove_battery = tpacpi_battery_remove, 9711 .name = "ThinkPad Battery Extension", 9712}; 9713 9714/* Subdriver init/exit */ 9715 9716static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 9717 /* 9718 * Individual addressing is broken on models that expose the 9719 * primary battery as BAT1. 9720 */ 9721 TPACPI_Q_LNV('8', 'F', true), /* Thinkpad X120e */ 9722 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 9723 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 9724 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 9725 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 9726 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 9727 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 9728}; 9729 9730static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 9731{ 9732 memset(&battery_info, 0, sizeof(battery_info)); 9733 9734 tp_features.battery_force_primary = tpacpi_check_quirks( 9735 battery_quirk_table, 9736 ARRAY_SIZE(battery_quirk_table)); 9737 9738 battery_hook_register(&battery_hook); 9739 return 0; 9740} 9741 9742static void tpacpi_battery_exit(void) 9743{ 9744 battery_hook_unregister(&battery_hook); 9745} 9746 9747static struct ibm_struct battery_driver_data = { 9748 .name = "battery", 9749 .exit = tpacpi_battery_exit, 9750}; 9751 9752/************************************************************************* 9753 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 9754 */ 9755 9756static int lcdshadow_state; 9757 9758static int lcdshadow_on_off(bool state) 9759{ 9760 acpi_handle set_shadow_handle; 9761 int output; 9762 9763 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSSS", &set_shadow_handle))) { 9764 pr_warn("Thinkpad ACPI has no %s interface.\n", "SSSS"); 9765 return -EIO; 9766 } 9767 9768 if (!acpi_evalf(set_shadow_handle, &output, NULL, "dd", (int)state)) 9769 return -EIO; 9770 9771 lcdshadow_state = state; 9772 return 0; 9773} 9774 9775static int lcdshadow_set(bool on) 9776{ 9777 if (lcdshadow_state < 0) 9778 return lcdshadow_state; 9779 if (lcdshadow_state == on) 9780 return 0; 9781 return lcdshadow_on_off(on); 9782} 9783 9784static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 9785{ 9786 acpi_handle get_shadow_handle; 9787 int output; 9788 9789 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSSS", &get_shadow_handle))) { 9790 lcdshadow_state = -ENODEV; 9791 return 0; 9792 } 9793 9794 if (!acpi_evalf(get_shadow_handle, &output, NULL, "dd", 0)) { 9795 lcdshadow_state = -EIO; 9796 return -EIO; 9797 } 9798 if (!(output & 0x10000)) { 9799 lcdshadow_state = -ENODEV; 9800 return 0; 9801 } 9802 lcdshadow_state = output & 0x1; 9803 9804 return 0; 9805} 9806 9807static void lcdshadow_resume(void) 9808{ 9809 if (lcdshadow_state >= 0) 9810 lcdshadow_on_off(lcdshadow_state); 9811} 9812 9813static int lcdshadow_read(struct seq_file *m) 9814{ 9815 if (lcdshadow_state < 0) { 9816 seq_puts(m, "status:\t\tnot supported\n"); 9817 } else { 9818 seq_printf(m, "status:\t\t%d\n", lcdshadow_state); 9819 seq_puts(m, "commands:\t0, 1\n"); 9820 } 9821 9822 return 0; 9823} 9824 9825static int lcdshadow_write(char *buf) 9826{ 9827 char *cmd; 9828 int res, state = -EINVAL; 9829 9830 if (lcdshadow_state < 0) 9831 return -ENODEV; 9832 9833 while ((cmd = strsep(&buf, ","))) { 9834 res = kstrtoint(cmd, 10, &state); 9835 if (res < 0) 9836 return res; 9837 } 9838 9839 if (state >= 2 || state < 0) 9840 return -EINVAL; 9841 9842 return lcdshadow_set(state); 9843} 9844 9845static struct ibm_struct lcdshadow_driver_data = { 9846 .name = "lcdshadow", 9847 .resume = lcdshadow_resume, 9848 .read = lcdshadow_read, 9849 .write = lcdshadow_write, 9850}; 9851 9852/************************************************************************* 9853 * DYTC subdriver, for the Lenovo lapmode feature 9854 */ 9855 9856#define DYTC_CMD_GET 2 /* To get current IC function and mode */ 9857#define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 9858 9859static bool dytc_lapmode; 9860 9861static void dytc_lapmode_notify_change(void) 9862{ 9863 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 9864} 9865 9866static int dytc_command(int command, int *output) 9867{ 9868 acpi_handle dytc_handle; 9869 9870 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 9871 /* Platform doesn't support DYTC */ 9872 return -ENODEV; 9873 } 9874 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 9875 return -EIO; 9876 return 0; 9877} 9878 9879static int dytc_lapmode_get(bool *state) 9880{ 9881 int output, err; 9882 9883 err = dytc_command(DYTC_CMD_GET, &output); 9884 if (err) 9885 return err; 9886 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 9887 return 0; 9888} 9889 9890static void dytc_lapmode_refresh(void) 9891{ 9892 bool new_state; 9893 int err; 9894 9895 err = dytc_lapmode_get(&new_state); 9896 if (err || (new_state == dytc_lapmode)) 9897 return; 9898 9899 dytc_lapmode = new_state; 9900 dytc_lapmode_notify_change(); 9901} 9902 9903/* sysfs lapmode entry */ 9904static ssize_t dytc_lapmode_show(struct device *dev, 9905 struct device_attribute *attr, 9906 char *buf) 9907{ 9908 return snprintf(buf, PAGE_SIZE, "%d\n", dytc_lapmode); 9909} 9910 9911static DEVICE_ATTR_RO(dytc_lapmode); 9912 9913static struct attribute *dytc_attributes[] = { 9914 &dev_attr_dytc_lapmode.attr, 9915 NULL, 9916}; 9917 9918static const struct attribute_group dytc_attr_group = { 9919 .attrs = dytc_attributes, 9920}; 9921 9922static int tpacpi_dytc_init(struct ibm_init_struct *iibm) 9923{ 9924 int err; 9925 9926 err = dytc_lapmode_get(&dytc_lapmode); 9927 /* If support isn't available (ENODEV) then don't return an error 9928 * but just don't create the sysfs group 9929 */ 9930 if (err == -ENODEV) 9931 return 0; 9932 /* For all other errors we can flag the failure */ 9933 if (err) 9934 return err; 9935 9936 /* Platform supports this feature - create the group */ 9937 err = sysfs_create_group(&tpacpi_pdev->dev.kobj, &dytc_attr_group); 9938 return err; 9939} 9940 9941static void dytc_exit(void) 9942{ 9943 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &dytc_attr_group); 9944} 9945 9946static struct ibm_struct dytc_driver_data = { 9947 .name = "dytc", 9948 .exit = dytc_exit, 9949}; 9950 9951/**************************************************************************** 9952 **************************************************************************** 9953 * 9954 * Infrastructure 9955 * 9956 **************************************************************************** 9957 ****************************************************************************/ 9958 9959/* 9960 * HKEY event callout for other subdrivers go here 9961 * (yes, it is ugly, but it is quick, safe, and gets the job done 9962 */ 9963static void tpacpi_driver_event(const unsigned int hkey_event) 9964{ 9965 if (ibm_backlight_device) { 9966 switch (hkey_event) { 9967 case TP_HKEY_EV_BRGHT_UP: 9968 case TP_HKEY_EV_BRGHT_DOWN: 9969 tpacpi_brightness_notify_change(); 9970 } 9971 } 9972 if (alsa_card) { 9973 switch (hkey_event) { 9974 case TP_HKEY_EV_VOL_UP: 9975 case TP_HKEY_EV_VOL_DOWN: 9976 case TP_HKEY_EV_VOL_MUTE: 9977 volume_alsa_notify_change(); 9978 } 9979 } 9980 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 9981 enum led_brightness brightness; 9982 9983 mutex_lock(&kbdlight_mutex); 9984 9985 /* 9986 * Check the brightness actually changed, setting the brightness 9987 * through kbdlight_set_level() also triggers this event. 9988 */ 9989 brightness = kbdlight_sysfs_get(NULL); 9990 if (kbdlight_brightness != brightness) { 9991 kbdlight_brightness = brightness; 9992 led_classdev_notify_brightness_hw_changed( 9993 &tpacpi_led_kbdlight.led_classdev, brightness); 9994 } 9995 9996 mutex_unlock(&kbdlight_mutex); 9997 } 9998 9999 if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) 10000 dytc_lapmode_refresh(); 10001 10002} 10003 10004static void hotkey_driver_event(const unsigned int scancode) 10005{ 10006 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 10007} 10008 10009/* --------------------------------------------------------------------- */ 10010 10011/* /proc support */ 10012static struct proc_dir_entry *proc_dir; 10013 10014/* 10015 * Module and infrastructure proble, init and exit handling 10016 */ 10017 10018static bool force_load; 10019 10020#ifdef CONFIG_THINKPAD_ACPI_DEBUG 10021static const char * __init str_supported(int is_supported) 10022{ 10023 static char text_unsupported[] __initdata = "not supported"; 10024 10025 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 10026} 10027#endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 10028 10029static void ibm_exit(struct ibm_struct *ibm) 10030{ 10031 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 10032 10033 list_del_init(&ibm->all_drivers); 10034 10035 if (ibm->flags.acpi_notify_installed) { 10036 dbg_printk(TPACPI_DBG_EXIT, 10037 "%s: acpi_remove_notify_handler\n", ibm->name); 10038 BUG_ON(!ibm->acpi); 10039 acpi_remove_notify_handler(*ibm->acpi->handle, 10040 ibm->acpi->type, 10041 dispatch_acpi_notify); 10042 ibm->flags.acpi_notify_installed = 0; 10043 } 10044 10045 if (ibm->flags.proc_created) { 10046 dbg_printk(TPACPI_DBG_EXIT, 10047 "%s: remove_proc_entry\n", ibm->name); 10048 remove_proc_entry(ibm->name, proc_dir); 10049 ibm->flags.proc_created = 0; 10050 } 10051 10052 if (ibm->flags.acpi_driver_registered) { 10053 dbg_printk(TPACPI_DBG_EXIT, 10054 "%s: acpi_bus_unregister_driver\n", ibm->name); 10055 BUG_ON(!ibm->acpi); 10056 acpi_bus_unregister_driver(ibm->acpi->driver); 10057 kfree(ibm->acpi->driver); 10058 ibm->acpi->driver = NULL; 10059 ibm->flags.acpi_driver_registered = 0; 10060 } 10061 10062 if (ibm->flags.init_called && ibm->exit) { 10063 ibm->exit(); 10064 ibm->flags.init_called = 0; 10065 } 10066 10067 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 10068} 10069 10070static int __init ibm_init(struct ibm_init_struct *iibm) 10071{ 10072 int ret; 10073 struct ibm_struct *ibm = iibm->data; 10074 struct proc_dir_entry *entry; 10075 10076 BUG_ON(ibm == NULL); 10077 10078 INIT_LIST_HEAD(&ibm->all_drivers); 10079 10080 if (ibm->flags.experimental && !experimental) 10081 return 0; 10082 10083 dbg_printk(TPACPI_DBG_INIT, 10084 "probing for %s\n", ibm->name); 10085 10086 if (iibm->init) { 10087 ret = iibm->init(iibm); 10088 if (ret > 0) 10089 return 0; /* probe failed */ 10090 if (ret) 10091 return ret; 10092 10093 ibm->flags.init_called = 1; 10094 } 10095 10096 if (ibm->acpi) { 10097 if (ibm->acpi->hid) { 10098 ret = register_tpacpi_subdriver(ibm); 10099 if (ret) 10100 goto err_out; 10101 } 10102 10103 if (ibm->acpi->notify) { 10104 ret = setup_acpi_notify(ibm); 10105 if (ret == -ENODEV) { 10106 pr_notice("disabling subdriver %s\n", 10107 ibm->name); 10108 ret = 0; 10109 goto err_out; 10110 } 10111 if (ret < 0) 10112 goto err_out; 10113 } 10114 } 10115 10116 dbg_printk(TPACPI_DBG_INIT, 10117 "%s installed\n", ibm->name); 10118 10119 if (ibm->read) { 10120 umode_t mode = iibm->base_procfs_mode; 10121 10122 if (!mode) 10123 mode = S_IRUGO; 10124 if (ibm->write) 10125 mode |= S_IWUSR; 10126 entry = proc_create_data(ibm->name, mode, proc_dir, 10127 &dispatch_proc_ops, ibm); 10128 if (!entry) { 10129 pr_err("unable to create proc entry %s\n", ibm->name); 10130 ret = -ENODEV; 10131 goto err_out; 10132 } 10133 ibm->flags.proc_created = 1; 10134 } 10135 10136 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 10137 10138 return 0; 10139 10140err_out: 10141 dbg_printk(TPACPI_DBG_INIT, 10142 "%s: at error exit path with result %d\n", 10143 ibm->name, ret); 10144 10145 ibm_exit(ibm); 10146 return (ret < 0) ? ret : 0; 10147} 10148 10149/* Probing */ 10150 10151static char __init tpacpi_parse_fw_id(const char * const s, 10152 u32 *model, u16 *release) 10153{ 10154 int i; 10155 10156 if (!s || strlen(s) < 8) 10157 goto invalid; 10158 10159 for (i = 0; i < 8; i++) 10160 if (!((s[i] >= '0' && s[i] <= '9') || 10161 (s[i] >= 'A' && s[i] <= 'Z'))) 10162 goto invalid; 10163 10164 /* 10165 * Most models: xxyTkkWW (#.##c) 10166 * Ancient 570/600 and -SL lacks (#.##c) 10167 */ 10168 if (s[3] == 'T' || s[3] == 'N') { 10169 *model = TPID(s[0], s[1]); 10170 *release = TPVER(s[4], s[5]); 10171 return s[2]; 10172 10173 /* New models: xxxyTkkW (#.##c); T550 and some others */ 10174 } else if (s[4] == 'T' || s[4] == 'N') { 10175 *model = TPID3(s[0], s[1], s[2]); 10176 *release = TPVER(s[5], s[6]); 10177 return s[3]; 10178 } 10179 10180invalid: 10181 return '\0'; 10182} 10183 10184static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 10185{ 10186 char *ec_fw_string = (char *) private; 10187 const char *dmi_data = (const char *)dm; 10188 /* 10189 * ThinkPad Embedded Controller Program Table on newer models 10190 * 10191 * Offset | Name | Width | Description 10192 * ---------------------------------------------------- 10193 * 0x00 | Type | BYTE | 0x8C 10194 * 0x01 | Length | BYTE | 10195 * 0x02 | Handle | WORD | Varies 10196 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 10197 * 0x0A | OEM struct offset | BYTE | 0x0B 10198 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 10199 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 10200 * 0x0D | ECP version ID | STR ID | 10201 * 0x0E | ECP release date | STR ID | 10202 */ 10203 10204 /* Return if data structure not match */ 10205 if (dm->type != 140 || dm->length < 0x0F || 10206 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 10207 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 10208 dmi_data[0x0C] != 0x01) 10209 return; 10210 10211 /* fwstr is the first 8byte string */ 10212 strncpy(ec_fw_string, dmi_data + 0x0F, 8); 10213} 10214 10215/* returns 0 - probe ok, or < 0 - probe error. 10216 * Probe ok doesn't mean thinkpad found. 10217 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 10218static int __must_check __init get_thinkpad_model_data( 10219 struct thinkpad_id_data *tp) 10220{ 10221 const struct dmi_device *dev = NULL; 10222 char ec_fw_string[18] = {0}; 10223 char const *s; 10224 char t; 10225 10226 if (!tp) 10227 return -EINVAL; 10228 10229 memset(tp, 0, sizeof(*tp)); 10230 10231 if (dmi_name_in_vendors("IBM")) 10232 tp->vendor = PCI_VENDOR_ID_IBM; 10233 else if (dmi_name_in_vendors("LENOVO")) 10234 tp->vendor = PCI_VENDOR_ID_LENOVO; 10235 else 10236 return 0; 10237 10238 s = dmi_get_system_info(DMI_BIOS_VERSION); 10239 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 10240 if (s && !tp->bios_version_str) 10241 return -ENOMEM; 10242 10243 /* Really ancient ThinkPad 240X will fail this, which is fine */ 10244 t = tpacpi_parse_fw_id(tp->bios_version_str, 10245 &tp->bios_model, &tp->bios_release); 10246 if (t != 'E' && t != 'C') 10247 return 0; 10248 10249 /* 10250 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 10251 * X32 or newer, all Z series; Some models must have an 10252 * up-to-date BIOS or they will not be detected. 10253 * 10254 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 10255 */ 10256 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 10257 if (sscanf(dev->name, 10258 "IBM ThinkPad Embedded Controller -[%17c", 10259 ec_fw_string) == 1) { 10260 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 10261 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 10262 break; 10263 } 10264 } 10265 10266 /* Newer ThinkPads have different EC program info table */ 10267 if (!ec_fw_string[0]) 10268 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 10269 10270 if (ec_fw_string[0]) { 10271 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 10272 if (!tp->ec_version_str) 10273 return -ENOMEM; 10274 10275 t = tpacpi_parse_fw_id(ec_fw_string, 10276 &tp->ec_model, &tp->ec_release); 10277 if (t != 'H') { 10278 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 10279 ec_fw_string); 10280 pr_notice("please report this to %s\n", TPACPI_MAIL); 10281 } 10282 } 10283 10284 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 10285 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 10286 tp->model_str = kstrdup(s, GFP_KERNEL); 10287 if (!tp->model_str) 10288 return -ENOMEM; 10289 } else { 10290 s = dmi_get_system_info(DMI_BIOS_VENDOR); 10291 if (s && !(strncasecmp(s, "Lenovo", 6))) { 10292 tp->model_str = kstrdup(s, GFP_KERNEL); 10293 if (!tp->model_str) 10294 return -ENOMEM; 10295 } 10296 } 10297 10298 s = dmi_get_system_info(DMI_PRODUCT_NAME); 10299 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 10300 if (s && !tp->nummodel_str) 10301 return -ENOMEM; 10302 10303 return 0; 10304} 10305 10306static int __init probe_for_thinkpad(void) 10307{ 10308 int is_thinkpad; 10309 10310 if (acpi_disabled) 10311 return -ENODEV; 10312 10313 /* It would be dangerous to run the driver in this case */ 10314 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 10315 return -ENODEV; 10316 10317 /* 10318 * Non-ancient models have better DMI tagging, but very old models 10319 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 10320 */ 10321 is_thinkpad = (thinkpad_id.model_str != NULL) || 10322 (thinkpad_id.ec_model != 0) || 10323 tpacpi_is_fw_known(); 10324 10325 /* The EC handler is required */ 10326 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 10327 if (!ec_handle) { 10328 if (is_thinkpad) 10329 pr_err("Not yet supported ThinkPad detected!\n"); 10330 return -ENODEV; 10331 } 10332 10333 if (!is_thinkpad && !force_load) 10334 return -ENODEV; 10335 10336 return 0; 10337} 10338 10339static void __init thinkpad_acpi_init_banner(void) 10340{ 10341 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 10342 pr_info("%s\n", TPACPI_URL); 10343 10344 pr_info("ThinkPad BIOS %s, EC %s\n", 10345 (thinkpad_id.bios_version_str) ? 10346 thinkpad_id.bios_version_str : "unknown", 10347 (thinkpad_id.ec_version_str) ? 10348 thinkpad_id.ec_version_str : "unknown"); 10349 10350 BUG_ON(!thinkpad_id.vendor); 10351 10352 if (thinkpad_id.model_str) 10353 pr_info("%s %s, model %s\n", 10354 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 10355 "IBM" : ((thinkpad_id.vendor == 10356 PCI_VENDOR_ID_LENOVO) ? 10357 "Lenovo" : "Unknown vendor"), 10358 thinkpad_id.model_str, 10359 (thinkpad_id.nummodel_str) ? 10360 thinkpad_id.nummodel_str : "unknown"); 10361} 10362 10363/* Module init, exit, parameters */ 10364 10365static struct ibm_init_struct ibms_init[] __initdata = { 10366 { 10367 .data = &thinkpad_acpi_driver_data, 10368 }, 10369 { 10370 .init = hotkey_init, 10371 .data = &hotkey_driver_data, 10372 }, 10373 { 10374 .init = bluetooth_init, 10375 .data = &bluetooth_driver_data, 10376 }, 10377 { 10378 .init = wan_init, 10379 .data = &wan_driver_data, 10380 }, 10381 { 10382 .init = uwb_init, 10383 .data = &uwb_driver_data, 10384 }, 10385#ifdef CONFIG_THINKPAD_ACPI_VIDEO 10386 { 10387 .init = video_init, 10388 .base_procfs_mode = S_IRUSR, 10389 .data = &video_driver_data, 10390 }, 10391#endif 10392 { 10393 .init = kbdlight_init, 10394 .data = &kbdlight_driver_data, 10395 }, 10396 { 10397 .init = light_init, 10398 .data = &light_driver_data, 10399 }, 10400 { 10401 .init = cmos_init, 10402 .data = &cmos_driver_data, 10403 }, 10404 { 10405 .init = led_init, 10406 .data = &led_driver_data, 10407 }, 10408 { 10409 .init = beep_init, 10410 .data = &beep_driver_data, 10411 }, 10412 { 10413 .init = thermal_init, 10414 .data = &thermal_driver_data, 10415 }, 10416 { 10417 .init = brightness_init, 10418 .data = &brightness_driver_data, 10419 }, 10420 { 10421 .init = volume_init, 10422 .data = &volume_driver_data, 10423 }, 10424 { 10425 .init = fan_init, 10426 .data = &fan_driver_data, 10427 }, 10428 { 10429 .init = mute_led_init, 10430 .data = &mute_led_driver_data, 10431 }, 10432 { 10433 .init = tpacpi_battery_init, 10434 .data = &battery_driver_data, 10435 }, 10436 { 10437 .init = tpacpi_lcdshadow_init, 10438 .data = &lcdshadow_driver_data, 10439 }, 10440 { 10441 .init = tpacpi_dytc_init, 10442 .data = &dytc_driver_data, 10443 }, 10444}; 10445 10446static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 10447{ 10448 unsigned int i; 10449 struct ibm_struct *ibm; 10450 10451 if (!kp || !kp->name || !val) 10452 return -EINVAL; 10453 10454 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 10455 ibm = ibms_init[i].data; 10456 WARN_ON(ibm == NULL); 10457 10458 if (!ibm || !ibm->name) 10459 continue; 10460 10461 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 10462 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 10463 return -ENOSPC; 10464 strcpy(ibms_init[i].param, val); 10465 return 0; 10466 } 10467 } 10468 10469 return -EINVAL; 10470} 10471 10472module_param(experimental, int, 0444); 10473MODULE_PARM_DESC(experimental, 10474 "Enables experimental features when non-zero"); 10475 10476module_param_named(debug, dbg_level, uint, 0); 10477MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 10478 10479module_param(force_load, bool, 0444); 10480MODULE_PARM_DESC(force_load, 10481 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 10482 10483module_param_named(fan_control, fan_control_allowed, bool, 0444); 10484MODULE_PARM_DESC(fan_control, 10485 "Enables setting fan parameters features when true"); 10486 10487module_param_named(brightness_mode, brightness_mode, uint, 0444); 10488MODULE_PARM_DESC(brightness_mode, 10489 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 10490 10491module_param(brightness_enable, uint, 0444); 10492MODULE_PARM_DESC(brightness_enable, 10493 "Enables backlight control when 1, disables when 0"); 10494 10495#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 10496module_param_named(volume_mode, volume_mode, uint, 0444); 10497MODULE_PARM_DESC(volume_mode, 10498 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 10499 10500module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 10501MODULE_PARM_DESC(volume_capabilities, 10502 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 10503 10504module_param_named(volume_control, volume_control_allowed, bool, 0444); 10505MODULE_PARM_DESC(volume_control, 10506 "Enables software override for the console audio control when true"); 10507 10508module_param_named(software_mute, software_mute_requested, bool, 0444); 10509MODULE_PARM_DESC(software_mute, 10510 "Request full software mute control"); 10511 10512/* ALSA module API parameters */ 10513module_param_named(index, alsa_index, int, 0444); 10514MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 10515module_param_named(id, alsa_id, charp, 0444); 10516MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 10517module_param_named(enable, alsa_enable, bool, 0444); 10518MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 10519#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 10520 10521/* The module parameter can't be read back, that's why 0 is used here */ 10522#define TPACPI_PARAM(feature) \ 10523 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 10524 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 10525 10526TPACPI_PARAM(hotkey); 10527TPACPI_PARAM(bluetooth); 10528TPACPI_PARAM(video); 10529TPACPI_PARAM(light); 10530TPACPI_PARAM(cmos); 10531TPACPI_PARAM(led); 10532TPACPI_PARAM(beep); 10533TPACPI_PARAM(brightness); 10534TPACPI_PARAM(volume); 10535TPACPI_PARAM(fan); 10536 10537#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 10538module_param(dbg_wlswemul, uint, 0444); 10539MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 10540module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 10541MODULE_PARM_DESC(wlsw_state, 10542 "Initial state of the emulated WLSW switch"); 10543 10544module_param(dbg_bluetoothemul, uint, 0444); 10545MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 10546module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 10547MODULE_PARM_DESC(bluetooth_state, 10548 "Initial state of the emulated bluetooth switch"); 10549 10550module_param(dbg_wwanemul, uint, 0444); 10551MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 10552module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 10553MODULE_PARM_DESC(wwan_state, 10554 "Initial state of the emulated WWAN switch"); 10555 10556module_param(dbg_uwbemul, uint, 0444); 10557MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 10558module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 10559MODULE_PARM_DESC(uwb_state, 10560 "Initial state of the emulated UWB switch"); 10561#endif 10562 10563static void thinkpad_acpi_module_exit(void) 10564{ 10565 struct ibm_struct *ibm, *itmp; 10566 10567 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 10568 10569 list_for_each_entry_safe_reverse(ibm, itmp, 10570 &tpacpi_all_drivers, 10571 all_drivers) { 10572 ibm_exit(ibm); 10573 } 10574 10575 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 10576 10577 if (tpacpi_inputdev) { 10578 if (tp_features.input_device_registered) 10579 input_unregister_device(tpacpi_inputdev); 10580 else 10581 input_free_device(tpacpi_inputdev); 10582 kfree(hotkey_keycode_map); 10583 } 10584 10585 if (tpacpi_hwmon) 10586 hwmon_device_unregister(tpacpi_hwmon); 10587 10588 if (tpacpi_sensors_pdev) 10589 platform_device_unregister(tpacpi_sensors_pdev); 10590 if (tpacpi_pdev) 10591 platform_device_unregister(tpacpi_pdev); 10592 10593 if (tp_features.sensors_pdrv_attrs_registered) 10594 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); 10595 if (tp_features.platform_drv_attrs_registered) 10596 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); 10597 10598 if (tp_features.sensors_pdrv_registered) 10599 platform_driver_unregister(&tpacpi_hwmon_pdriver); 10600 10601 if (tp_features.platform_drv_registered) 10602 platform_driver_unregister(&tpacpi_pdriver); 10603 10604 if (proc_dir) 10605 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 10606 10607 if (tpacpi_wq) 10608 destroy_workqueue(tpacpi_wq); 10609 10610 kfree(thinkpad_id.bios_version_str); 10611 kfree(thinkpad_id.ec_version_str); 10612 kfree(thinkpad_id.model_str); 10613 kfree(thinkpad_id.nummodel_str); 10614} 10615 10616 10617static int __init thinkpad_acpi_module_init(void) 10618{ 10619 int ret, i; 10620 10621 tpacpi_lifecycle = TPACPI_LIFE_INIT; 10622 10623 /* Driver-level probe */ 10624 10625 ret = get_thinkpad_model_data(&thinkpad_id); 10626 if (ret) { 10627 pr_err("unable to get DMI data: %d\n", ret); 10628 thinkpad_acpi_module_exit(); 10629 return ret; 10630 } 10631 ret = probe_for_thinkpad(); 10632 if (ret) { 10633 thinkpad_acpi_module_exit(); 10634 return ret; 10635 } 10636 10637 /* Driver initialization */ 10638 10639 thinkpad_acpi_init_banner(); 10640 tpacpi_check_outdated_fw(); 10641 10642 TPACPI_ACPIHANDLE_INIT(ecrd); 10643 TPACPI_ACPIHANDLE_INIT(ecwr); 10644 10645 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 10646 if (!tpacpi_wq) { 10647 thinkpad_acpi_module_exit(); 10648 return -ENOMEM; 10649 } 10650 10651 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 10652 if (!proc_dir) { 10653 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 10654 thinkpad_acpi_module_exit(); 10655 return -ENODEV; 10656 } 10657 10658 ret = platform_driver_register(&tpacpi_pdriver); 10659 if (ret) { 10660 pr_err("unable to register main platform driver\n"); 10661 thinkpad_acpi_module_exit(); 10662 return ret; 10663 } 10664 tp_features.platform_drv_registered = 1; 10665 10666 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 10667 if (ret) { 10668 pr_err("unable to register hwmon platform driver\n"); 10669 thinkpad_acpi_module_exit(); 10670 return ret; 10671 } 10672 tp_features.sensors_pdrv_registered = 1; 10673 10674 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); 10675 if (!ret) { 10676 tp_features.platform_drv_attrs_registered = 1; 10677 ret = tpacpi_create_driver_attributes( 10678 &tpacpi_hwmon_pdriver.driver); 10679 } 10680 if (ret) { 10681 pr_err("unable to create sysfs driver attributes\n"); 10682 thinkpad_acpi_module_exit(); 10683 return ret; 10684 } 10685 tp_features.sensors_pdrv_attrs_registered = 1; 10686 10687 10688 /* Device initialization */ 10689 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 10690 NULL, 0); 10691 if (IS_ERR(tpacpi_pdev)) { 10692 ret = PTR_ERR(tpacpi_pdev); 10693 tpacpi_pdev = NULL; 10694 pr_err("unable to register platform device\n"); 10695 thinkpad_acpi_module_exit(); 10696 return ret; 10697 } 10698 tpacpi_sensors_pdev = platform_device_register_simple( 10699 TPACPI_HWMON_DRVR_NAME, 10700 -1, NULL, 0); 10701 if (IS_ERR(tpacpi_sensors_pdev)) { 10702 ret = PTR_ERR(tpacpi_sensors_pdev); 10703 tpacpi_sensors_pdev = NULL; 10704 pr_err("unable to register hwmon platform device\n"); 10705 thinkpad_acpi_module_exit(); 10706 return ret; 10707 } 10708 tp_features.sensors_pdev_attrs_registered = 1; 10709 tpacpi_hwmon = hwmon_device_register_with_groups( 10710 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL); 10711 10712 if (IS_ERR(tpacpi_hwmon)) { 10713 ret = PTR_ERR(tpacpi_hwmon); 10714 tpacpi_hwmon = NULL; 10715 pr_err("unable to register hwmon device\n"); 10716 thinkpad_acpi_module_exit(); 10717 return ret; 10718 } 10719 mutex_init(&tpacpi_inputdev_send_mutex); 10720 tpacpi_inputdev = input_allocate_device(); 10721 if (!tpacpi_inputdev) { 10722 thinkpad_acpi_module_exit(); 10723 return -ENOMEM; 10724 } else { 10725 /* Prepare input device, but don't register */ 10726 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 10727 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 10728 tpacpi_inputdev->id.bustype = BUS_HOST; 10729 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 10730 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 10731 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 10732 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 10733 } 10734 10735 /* Init subdriver dependencies */ 10736 tpacpi_detect_brightness_capabilities(); 10737 10738 /* Init subdrivers */ 10739 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 10740 ret = ibm_init(&ibms_init[i]); 10741 if (ret >= 0 && *ibms_init[i].param) 10742 ret = ibms_init[i].data->write(ibms_init[i].param); 10743 if (ret < 0) { 10744 thinkpad_acpi_module_exit(); 10745 return ret; 10746 } 10747 } 10748 10749 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 10750 10751 ret = input_register_device(tpacpi_inputdev); 10752 if (ret < 0) { 10753 pr_err("unable to register input device\n"); 10754 thinkpad_acpi_module_exit(); 10755 return ret; 10756 } else { 10757 tp_features.input_device_registered = 1; 10758 } 10759 10760 return 0; 10761} 10762 10763MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 10764 10765/* 10766 * This will autoload the driver in almost every ThinkPad 10767 * in widespread use. 10768 * 10769 * Only _VERY_ old models, like the 240, 240x and 570 lack 10770 * the HKEY event interface. 10771 */ 10772MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 10773 10774/* 10775 * DMI matching for module autoloading 10776 * 10777 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 10778 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 10779 * 10780 * Only models listed in thinkwiki will be supported, so add yours 10781 * if it is not there yet. 10782 */ 10783#define IBM_BIOS_MODULE_ALIAS(__type) \ 10784 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 10785 10786/* Ancient thinkpad BIOSes have to be identified by 10787 * BIOS type or model number, and there are far less 10788 * BIOS types than model numbers... */ 10789IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 10790 10791MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 10792MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 10793MODULE_DESCRIPTION(TPACPI_DESC); 10794MODULE_VERSION(TPACPI_VERSION); 10795MODULE_LICENSE("GPL"); 10796 10797module_init(thinkpad_acpi_module_init); 10798module_exit(thinkpad_acpi_module_exit); 10799