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 */ 86 enum 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 */ 95 enum { 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 */ 112 enum { 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 */ 127 enum { 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 */ 135 enum { 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 */ 149 enum 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 */ 258 259 struct ibm_struct; 260 261 struct 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 }; 270 271 struct 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 }; 293 294 struct 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 }; 301 302 static 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; 334 335 static struct { 336 u16 hotkey_mask_ff:1; 337 u16 volume_ctrl_forbidden:1; 338 } tp_warned; 339 340 struct 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 }; 355 static struct thinkpad_id_data thinkpad_id; 356 357 static enum { 358 TPACPI_LIFE_INIT = 0, 359 TPACPI_LIFE_RUNNING, 360 TPACPI_LIFE_EXITING, 361 } tpacpi_lifecycle; 362 363 static int experimental; 364 static u32 dbg_level; 365 366 static struct workqueue_struct *tpacpi_wq; 367 368 enum led_status_t { 369 TPACPI_LED_OFF = 0, 370 TPACPI_LED_ON, 371 TPACPI_LED_BLINK, 372 }; 373 374 /* tpacpi LED class */ 375 struct tpacpi_led_classdev { 376 struct led_classdev led_classdev; 377 int led; 378 }; 379 380 /* brightness level capabilities */ 381 static unsigned int bright_maxlvl; /* 0 = unknown */ 382 383 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 384 static int dbg_wlswemul; 385 static bool tpacpi_wlsw_emulstate; 386 static int dbg_bluetoothemul; 387 static bool tpacpi_bluetooth_emulstate; 388 static int dbg_wwanemul; 389 static bool tpacpi_wwan_emulstate; 390 static int dbg_uwbemul; 391 static bool tpacpi_uwb_emulstate; 392 #endif 393 394 395 /************************************************************************* 396 * Debugging helpers 397 */ 398 399 #define dbg_printk(a_dbg_level, format, arg...) \ 400 do { \ 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 408 static const char *str_supported(int is_supported); 409 #else 410 static 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 414 415 static 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...) \ 422 do { \ 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) } 477 478 struct 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 */ 498 static 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 } 516 517 static inline bool __pure __init tpacpi_is_lenovo(void) 518 { 519 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 520 } 521 522 static 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 */ 538 539 static acpi_handle root_handle; 540 static 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 } 547 548 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 549 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 550 551 TPACPI_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 */ 556 557 TPACPI_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 */ 565 566 static 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 } 646 647 static 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 } 662 663 static 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 } 675 676 static 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)) 694 695 static 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 } 719 720 static 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 } 735 736 static 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 } 764 765 static 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 } 777 778 static 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 } 817 818 static int __init tpacpi_device_add(struct acpi_device *device) 819 { 820 return 0; 821 } 822 823 static 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 ****************************************************************************/ 863 864 static 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 } 872 873 static int dispatch_proc_open(struct inode *inode, struct file *file) 874 { 875 return single_open(file, dispatch_proc_show, PDE_DATA(inode)); 876 } 877 878 static 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 } 909 910 static 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 ****************************************************************************/ 925 926 static struct platform_device *tpacpi_pdev; 927 static struct platform_device *tpacpi_sensors_pdev; 928 static struct device *tpacpi_hwmon; 929 static struct input_dev *tpacpi_inputdev; 930 static struct mutex tpacpi_inputdev_send_mutex; 931 static LIST_HEAD(tpacpi_all_drivers); 932 933 #ifdef CONFIG_PM_SLEEP 934 static 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 } 947 948 static 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 962 963 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 964 tpacpi_suspend_handler, tpacpi_resume_handler); 965 966 static 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 } 977 978 static struct platform_driver tpacpi_pdriver = { 979 .driver = { 980 .name = TPACPI_DRVR_NAME, 981 .pm = &tpacpi_pm, 982 }, 983 .shutdown = tpacpi_shutdown_handler, 984 }; 985 986 static struct platform_driver tpacpi_hwmon_pdriver = { 987 .driver = { 988 .name = TPACPI_HWMON_DRVR_NAME, 989 }, 990 }; 991 992 /************************************************************************* 993 * sysfs support helpers 994 */ 995 996 struct attribute_set { 997 unsigned int members, max_members; 998 struct attribute_group group; 999 }; 1000 1001 struct attribute_set_obj { 1002 struct attribute_set s; 1003 struct attribute *a; 1004 } __attribute__((packed)); 1005 1006 static 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 */ 1031 static 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 1045 static 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 1060 static 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 1069 static 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 1082 static 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 1088 static 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 */ 1120 enum tpacpi_rfkill_state { 1121 TPACPI_RFK_RADIO_OFF = 0, 1122 TPACPI_RFK_RADIO_ON 1123 }; 1124 1125 /* rfkill switches */ 1126 enum 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 1133 static 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 */ 1141 struct tpacpi_rfk { 1142 struct rfkill *rfkill; 1143 enum tpacpi_rfk_id id; 1144 const struct tpacpi_rfk_ops *ops; 1145 }; 1146 1147 struct tpacpi_rfk_ops { 1148 /* firmware interface */ 1149 int (*get_status)(void); 1150 int (*set_status)(const enum tpacpi_rfkill_state); 1151 }; 1152 1153 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1154 1155 /* Query FW and update rfkill sw state for a given rfkill switch */ 1156 static 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 /* Query FW and update rfkill sw state for all rfkill switches */ 1174 static void tpacpi_rfk_update_swstate_all(void) 1175 { 1176 unsigned int i; 1177 1178 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) 1179 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]); 1180 } 1181 1182 /* 1183 * Sync the HW-blocking state of all rfkill switches, 1184 * do notice it causes the rfkill core to schedule uevents 1185 */ 1186 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1187 { 1188 unsigned int i; 1189 struct tpacpi_rfk *tp_rfk; 1190 1191 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1192 tp_rfk = tpacpi_rfkill_switches[i]; 1193 if (tp_rfk) { 1194 if (rfkill_set_hw_state(tp_rfk->rfkill, 1195 blocked)) { 1196 /* ignore -- we track sw block */ 1197 } 1198 } 1199 } 1200 } 1201 1202 /* Call to get the WLSW state from the firmware */ 1203 static int hotkey_get_wlsw(void); 1204 1205 /* Call to query WLSW state and update all rfkill switches */ 1206 static bool tpacpi_rfk_check_hwblock_state(void) 1207 { 1208 int res = hotkey_get_wlsw(); 1209 int hw_blocked; 1210 1211 /* When unknown or unsupported, we have to assume it is unblocked */ 1212 if (res < 0) 1213 return false; 1214 1215 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1216 tpacpi_rfk_update_hwblock_state(hw_blocked); 1217 1218 return hw_blocked; 1219 } 1220 1221 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1222 { 1223 struct tpacpi_rfk *tp_rfk = data; 1224 int res; 1225 1226 dbg_printk(TPACPI_DBG_RFKILL, 1227 "request to change radio state to %s\n", 1228 blocked ? "blocked" : "unblocked"); 1229 1230 /* try to set radio state */ 1231 res = (tp_rfk->ops->set_status)(blocked ? 1232 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1233 1234 /* and update the rfkill core with whatever the FW really did */ 1235 tpacpi_rfk_update_swstate(tp_rfk); 1236 1237 return (res < 0) ? res : 0; 1238 } 1239 1240 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1241 .set_block = tpacpi_rfk_hook_set_block, 1242 }; 1243 1244 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1245 const struct tpacpi_rfk_ops *tp_rfkops, 1246 const enum rfkill_type rfktype, 1247 const char *name, 1248 const bool set_default) 1249 { 1250 struct tpacpi_rfk *atp_rfk; 1251 int res; 1252 bool sw_state = false; 1253 bool hw_state; 1254 int sw_status; 1255 1256 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1257 1258 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1259 if (atp_rfk) 1260 atp_rfk->rfkill = rfkill_alloc(name, 1261 &tpacpi_pdev->dev, 1262 rfktype, 1263 &tpacpi_rfk_rfkill_ops, 1264 atp_rfk); 1265 if (!atp_rfk || !atp_rfk->rfkill) { 1266 pr_err("failed to allocate memory for rfkill class\n"); 1267 kfree(atp_rfk); 1268 return -ENOMEM; 1269 } 1270 1271 atp_rfk->id = id; 1272 atp_rfk->ops = tp_rfkops; 1273 1274 sw_status = (tp_rfkops->get_status)(); 1275 if (sw_status < 0) { 1276 pr_err("failed to read initial state for %s, error %d\n", 1277 name, sw_status); 1278 } else { 1279 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1280 if (set_default) { 1281 /* try to keep the initial state, since we ask the 1282 * firmware to preserve it across S5 in NVRAM */ 1283 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1284 } 1285 } 1286 hw_state = tpacpi_rfk_check_hwblock_state(); 1287 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1288 1289 res = rfkill_register(atp_rfk->rfkill); 1290 if (res < 0) { 1291 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1292 rfkill_destroy(atp_rfk->rfkill); 1293 kfree(atp_rfk); 1294 return res; 1295 } 1296 1297 tpacpi_rfkill_switches[id] = atp_rfk; 1298 1299 pr_info("rfkill switch %s: radio is %sblocked\n", 1300 name, (sw_state || hw_state) ? "" : "un"); 1301 return 0; 1302 } 1303 1304 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1305 { 1306 struct tpacpi_rfk *tp_rfk; 1307 1308 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1309 1310 tp_rfk = tpacpi_rfkill_switches[id]; 1311 if (tp_rfk) { 1312 rfkill_unregister(tp_rfk->rfkill); 1313 rfkill_destroy(tp_rfk->rfkill); 1314 tpacpi_rfkill_switches[id] = NULL; 1315 kfree(tp_rfk); 1316 } 1317 } 1318 1319 static void printk_deprecated_rfkill_attribute(const char * const what) 1320 { 1321 printk_deprecated_attribute(what, 1322 "Please switch to generic rfkill before year 2010"); 1323 } 1324 1325 /* sysfs <radio> enable ------------------------------------------------ */ 1326 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1327 struct device_attribute *attr, 1328 char *buf) 1329 { 1330 int status; 1331 1332 printk_deprecated_rfkill_attribute(attr->attr.name); 1333 1334 /* This is in the ABI... */ 1335 if (tpacpi_rfk_check_hwblock_state()) { 1336 status = TPACPI_RFK_RADIO_OFF; 1337 } else { 1338 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1339 if (status < 0) 1340 return status; 1341 } 1342 1343 return snprintf(buf, PAGE_SIZE, "%d\n", 1344 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1345 } 1346 1347 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1348 struct device_attribute *attr, 1349 const char *buf, size_t count) 1350 { 1351 unsigned long t; 1352 int res; 1353 1354 printk_deprecated_rfkill_attribute(attr->attr.name); 1355 1356 if (parse_strtoul(buf, 1, &t)) 1357 return -EINVAL; 1358 1359 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1360 1361 /* This is in the ABI... */ 1362 if (tpacpi_rfk_check_hwblock_state() && !!t) 1363 return -EPERM; 1364 1365 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1366 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1367 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1368 1369 return (res < 0) ? res : count; 1370 } 1371 1372 /* procfs -------------------------------------------------------------- */ 1373 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1374 { 1375 if (id >= TPACPI_RFK_SW_MAX) 1376 seq_printf(m, "status:\t\tnot supported\n"); 1377 else { 1378 int status; 1379 1380 /* This is in the ABI... */ 1381 if (tpacpi_rfk_check_hwblock_state()) { 1382 status = TPACPI_RFK_RADIO_OFF; 1383 } else { 1384 status = tpacpi_rfk_update_swstate( 1385 tpacpi_rfkill_switches[id]); 1386 if (status < 0) 1387 return status; 1388 } 1389 1390 seq_printf(m, "status:\t\t%s\n", 1391 (status == TPACPI_RFK_RADIO_ON) ? 1392 "enabled" : "disabled"); 1393 seq_printf(m, "commands:\tenable, disable\n"); 1394 } 1395 1396 return 0; 1397 } 1398 1399 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1400 { 1401 char *cmd; 1402 int status = -1; 1403 int res = 0; 1404 1405 if (id >= TPACPI_RFK_SW_MAX) 1406 return -ENODEV; 1407 1408 while ((cmd = strsep(&buf, ","))) { 1409 if (strlencmp(cmd, "enable") == 0) 1410 status = TPACPI_RFK_RADIO_ON; 1411 else if (strlencmp(cmd, "disable") == 0) 1412 status = TPACPI_RFK_RADIO_OFF; 1413 else 1414 return -EINVAL; 1415 } 1416 1417 if (status != -1) { 1418 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1419 (status == TPACPI_RFK_RADIO_ON) ? 1420 "enable" : "disable", 1421 tpacpi_rfkill_names[id]); 1422 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1423 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1424 } 1425 1426 return res; 1427 } 1428 1429 /************************************************************************* 1430 * thinkpad-acpi driver attributes 1431 */ 1432 1433 /* interface_version --------------------------------------------------- */ 1434 static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1435 { 1436 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); 1437 } 1438 static DRIVER_ATTR_RO(interface_version); 1439 1440 /* debug_level --------------------------------------------------------- */ 1441 static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1442 { 1443 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); 1444 } 1445 1446 static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1447 size_t count) 1448 { 1449 unsigned long t; 1450 1451 if (parse_strtoul(buf, 0xffff, &t)) 1452 return -EINVAL; 1453 1454 dbg_level = t; 1455 1456 return count; 1457 } 1458 static DRIVER_ATTR_RW(debug_level); 1459 1460 /* version ------------------------------------------------------------- */ 1461 static ssize_t version_show(struct device_driver *drv, char *buf) 1462 { 1463 return snprintf(buf, PAGE_SIZE, "%s v%s\n", 1464 TPACPI_DESC, TPACPI_VERSION); 1465 } 1466 static DRIVER_ATTR_RO(version); 1467 1468 /* --------------------------------------------------------------------- */ 1469 1470 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1471 1472 /* wlsw_emulstate ------------------------------------------------------ */ 1473 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1474 { 1475 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate); 1476 } 1477 1478 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1479 size_t count) 1480 { 1481 unsigned long t; 1482 1483 if (parse_strtoul(buf, 1, &t)) 1484 return -EINVAL; 1485 1486 if (tpacpi_wlsw_emulstate != !!t) { 1487 tpacpi_wlsw_emulstate = !!t; 1488 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1489 } 1490 1491 return count; 1492 } 1493 static DRIVER_ATTR_RW(wlsw_emulstate); 1494 1495 /* bluetooth_emulstate ------------------------------------------------- */ 1496 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1497 { 1498 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate); 1499 } 1500 1501 static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1502 const char *buf, size_t count) 1503 { 1504 unsigned long t; 1505 1506 if (parse_strtoul(buf, 1, &t)) 1507 return -EINVAL; 1508 1509 tpacpi_bluetooth_emulstate = !!t; 1510 1511 return count; 1512 } 1513 static DRIVER_ATTR_RW(bluetooth_emulstate); 1514 1515 /* wwan_emulstate ------------------------------------------------- */ 1516 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1517 { 1518 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate); 1519 } 1520 1521 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1522 size_t count) 1523 { 1524 unsigned long t; 1525 1526 if (parse_strtoul(buf, 1, &t)) 1527 return -EINVAL; 1528 1529 tpacpi_wwan_emulstate = !!t; 1530 1531 return count; 1532 } 1533 static DRIVER_ATTR_RW(wwan_emulstate); 1534 1535 /* uwb_emulstate ------------------------------------------------- */ 1536 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1537 { 1538 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate); 1539 } 1540 1541 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1542 size_t count) 1543 { 1544 unsigned long t; 1545 1546 if (parse_strtoul(buf, 1, &t)) 1547 return -EINVAL; 1548 1549 tpacpi_uwb_emulstate = !!t; 1550 1551 return count; 1552 } 1553 static DRIVER_ATTR_RW(uwb_emulstate); 1554 #endif 1555 1556 /* --------------------------------------------------------------------- */ 1557 1558 static struct driver_attribute *tpacpi_driver_attributes[] = { 1559 &driver_attr_debug_level, &driver_attr_version, 1560 &driver_attr_interface_version, 1561 }; 1562 1563 static int __init tpacpi_create_driver_attributes(struct device_driver *drv) 1564 { 1565 int i, res; 1566 1567 i = 0; 1568 res = 0; 1569 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { 1570 res = driver_create_file(drv, tpacpi_driver_attributes[i]); 1571 i++; 1572 } 1573 1574 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1575 if (!res && dbg_wlswemul) 1576 res = driver_create_file(drv, &driver_attr_wlsw_emulstate); 1577 if (!res && dbg_bluetoothemul) 1578 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); 1579 if (!res && dbg_wwanemul) 1580 res = driver_create_file(drv, &driver_attr_wwan_emulstate); 1581 if (!res && dbg_uwbemul) 1582 res = driver_create_file(drv, &driver_attr_uwb_emulstate); 1583 #endif 1584 1585 return res; 1586 } 1587 1588 static void tpacpi_remove_driver_attributes(struct device_driver *drv) 1589 { 1590 int i; 1591 1592 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) 1593 driver_remove_file(drv, tpacpi_driver_attributes[i]); 1594 1595 #ifdef THINKPAD_ACPI_DEBUGFACILITIES 1596 driver_remove_file(drv, &driver_attr_wlsw_emulstate); 1597 driver_remove_file(drv, &driver_attr_bluetooth_emulstate); 1598 driver_remove_file(drv, &driver_attr_wwan_emulstate); 1599 driver_remove_file(drv, &driver_attr_uwb_emulstate); 1600 #endif 1601 } 1602 1603 /************************************************************************* 1604 * Firmware Data 1605 */ 1606 1607 /* 1608 * Table of recommended minimum BIOS versions 1609 * 1610 * Reasons for listing: 1611 * 1. Stable BIOS, listed because the unknown amount of 1612 * bugs and bad ACPI behaviour on older versions 1613 * 1614 * 2. BIOS or EC fw with known bugs that trigger on Linux 1615 * 1616 * 3. BIOS with known reduced functionality in older versions 1617 * 1618 * We recommend the latest BIOS and EC version. 1619 * We only support the latest BIOS and EC fw version as a rule. 1620 * 1621 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1622 * Information from users in ThinkWiki 1623 * 1624 * WARNING: we use this table also to detect that the machine is 1625 * a ThinkPad in some cases, so don't remove entries lightly. 1626 */ 1627 1628 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1629 { .vendor = (__v), \ 1630 .bios = TPID(__id1, __id2), \ 1631 .ec = TPACPI_MATCH_ANY, \ 1632 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ 1633 | TPVER(__bv1, __bv2) } 1634 1635 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1636 __eid, __ev1, __ev2) \ 1637 { .vendor = (__v), \ 1638 .bios = TPID(__bid1, __bid2), \ 1639 .ec = __eid, \ 1640 .quirks = TPVER(__ev1, __ev2) << 16 \ 1641 | TPVER(__bv1, __bv2) } 1642 1643 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1644 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1645 1646 /* Outdated IBM BIOSes often lack the EC id string */ 1647 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1648 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1649 __bv1, __bv2, TPID(__id1, __id2), \ 1650 __ev1, __ev2), \ 1651 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1652 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1653 __ev1, __ev2) 1654 1655 /* Outdated IBM BIOSes often lack the EC id string */ 1656 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1657 __eid1, __eid2, __ev1, __ev2) \ 1658 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1659 __bv1, __bv2, TPID(__eid1, __eid2), \ 1660 __ev1, __ev2), \ 1661 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1662 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1663 __ev1, __ev2) 1664 1665 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1666 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1667 1668 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1669 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1670 __bv1, __bv2, TPID(__id1, __id2), \ 1671 __ev1, __ev2) 1672 1673 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1674 __eid1, __eid2, __ev1, __ev2) \ 1675 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1676 __bv1, __bv2, TPID(__eid1, __eid2), \ 1677 __ev1, __ev2) 1678 1679 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1680 /* Numeric models ------------------ */ 1681 /* FW MODEL BIOS VERS */ 1682 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1683 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1684 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1685 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1686 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1687 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1688 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1689 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1690 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1691 1692 /* A-series ------------------------- */ 1693 /* FW MODEL BIOS VERS EC VERS */ 1694 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1695 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1696 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1697 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1698 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1699 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1700 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1701 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1702 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1703 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1704 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1705 1706 /* G-series ------------------------- */ 1707 /* FW MODEL BIOS VERS */ 1708 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1709 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1710 1711 /* R-series, T-series --------------- */ 1712 /* FW MODEL BIOS VERS EC VERS */ 1713 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1714 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1715 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1716 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1717 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1718 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1719 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1720 T40/p, T41/p, T42/p (1) */ 1721 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1722 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1723 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1724 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1725 1726 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1727 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1728 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1729 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1730 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1731 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1732 1733 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1734 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1735 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1736 1737 /* BIOS FW BIOS VERS EC FW EC VERS */ 1738 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1739 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1740 1741 /* X-series ------------------------- */ 1742 /* FW MODEL BIOS VERS EC VERS */ 1743 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1744 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1745 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1746 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1747 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1748 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1749 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1750 1751 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1752 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1753 1754 /* (0) - older versions lack DMI EC fw string and functionality */ 1755 /* (1) - older versions known to lack functionality */ 1756 }; 1757 1758 #undef TPV_QL1 1759 #undef TPV_QL0 1760 #undef TPV_QI2 1761 #undef TPV_QI1 1762 #undef TPV_QI0 1763 #undef TPV_Q_X 1764 #undef TPV_Q 1765 1766 static void __init tpacpi_check_outdated_fw(void) 1767 { 1768 unsigned long fwvers; 1769 u16 ec_version, bios_version; 1770 1771 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1772 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1773 1774 if (!fwvers) 1775 return; 1776 1777 bios_version = fwvers & 0xffffU; 1778 ec_version = (fwvers >> 16) & 0xffffU; 1779 1780 /* note that unknown versions are set to 0x0000 and we use that */ 1781 if ((bios_version > thinkpad_id.bios_release) || 1782 (ec_version > thinkpad_id.ec_release && 1783 ec_version != TPACPI_MATCH_ANY_VERSION)) { 1784 /* 1785 * The changelogs would let us track down the exact 1786 * reason, but it is just too much of a pain to track 1787 * it. We only list BIOSes that are either really 1788 * broken, or really stable to begin with, so it is 1789 * best if the user upgrades the firmware anyway. 1790 */ 1791 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1792 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1793 } 1794 } 1795 1796 static bool __init tpacpi_is_fw_known(void) 1797 { 1798 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1799 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1800 } 1801 1802 /**************************************************************************** 1803 **************************************************************************** 1804 * 1805 * Subdrivers 1806 * 1807 **************************************************************************** 1808 ****************************************************************************/ 1809 1810 /************************************************************************* 1811 * thinkpad-acpi metadata subdriver 1812 */ 1813 1814 static int thinkpad_acpi_driver_read(struct seq_file *m) 1815 { 1816 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1817 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1818 return 0; 1819 } 1820 1821 static struct ibm_struct thinkpad_acpi_driver_data = { 1822 .name = "driver", 1823 .read = thinkpad_acpi_driver_read, 1824 }; 1825 1826 /************************************************************************* 1827 * Hotkey subdriver 1828 */ 1829 1830 /* 1831 * ThinkPad firmware event model 1832 * 1833 * The ThinkPad firmware has two main event interfaces: normal ACPI 1834 * notifications (which follow the ACPI standard), and a private event 1835 * interface. 1836 * 1837 * The private event interface also issues events for the hotkeys. As 1838 * the driver gained features, the event handling code ended up being 1839 * built around the hotkey subdriver. This will need to be refactored 1840 * to a more formal event API eventually. 1841 * 1842 * Some "hotkeys" are actually supposed to be used as event reports, 1843 * such as "brightness has changed", "volume has changed", depending on 1844 * the ThinkPad model and how the firmware is operating. 1845 * 1846 * Unlike other classes, hotkey-class events have mask/unmask control on 1847 * non-ancient firmware. However, how it behaves changes a lot with the 1848 * firmware model and version. 1849 */ 1850 1851 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1852 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1853 TP_ACPI_HOTKEYSCAN_FNF2, 1854 TP_ACPI_HOTKEYSCAN_FNF3, 1855 TP_ACPI_HOTKEYSCAN_FNF4, 1856 TP_ACPI_HOTKEYSCAN_FNF5, 1857 TP_ACPI_HOTKEYSCAN_FNF6, 1858 TP_ACPI_HOTKEYSCAN_FNF7, 1859 TP_ACPI_HOTKEYSCAN_FNF8, 1860 TP_ACPI_HOTKEYSCAN_FNF9, 1861 TP_ACPI_HOTKEYSCAN_FNF10, 1862 TP_ACPI_HOTKEYSCAN_FNF11, 1863 TP_ACPI_HOTKEYSCAN_FNF12, 1864 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1865 TP_ACPI_HOTKEYSCAN_FNINSERT, 1866 TP_ACPI_HOTKEYSCAN_FNDELETE, 1867 TP_ACPI_HOTKEYSCAN_FNHOME, 1868 TP_ACPI_HOTKEYSCAN_FNEND, 1869 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1870 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1871 TP_ACPI_HOTKEYSCAN_FNSPACE, 1872 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1873 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1874 TP_ACPI_HOTKEYSCAN_MUTE, 1875 TP_ACPI_HOTKEYSCAN_THINKPAD, 1876 TP_ACPI_HOTKEYSCAN_UNK1, 1877 TP_ACPI_HOTKEYSCAN_UNK2, 1878 TP_ACPI_HOTKEYSCAN_UNK3, 1879 TP_ACPI_HOTKEYSCAN_UNK4, 1880 TP_ACPI_HOTKEYSCAN_UNK5, 1881 TP_ACPI_HOTKEYSCAN_UNK6, 1882 TP_ACPI_HOTKEYSCAN_UNK7, 1883 TP_ACPI_HOTKEYSCAN_UNK8, 1884 1885 /* Adaptive keyboard keycodes */ 1886 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1887 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1888 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1889 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1890 TP_ACPI_HOTKEYSCAN_CLOUD, 1891 TP_ACPI_HOTKEYSCAN_UNK9, 1892 TP_ACPI_HOTKEYSCAN_VOICE, 1893 TP_ACPI_HOTKEYSCAN_UNK10, 1894 TP_ACPI_HOTKEYSCAN_GESTURES, 1895 TP_ACPI_HOTKEYSCAN_UNK11, 1896 TP_ACPI_HOTKEYSCAN_UNK12, 1897 TP_ACPI_HOTKEYSCAN_UNK13, 1898 TP_ACPI_HOTKEYSCAN_CONFIG, 1899 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1900 TP_ACPI_HOTKEYSCAN_RELOAD, 1901 TP_ACPI_HOTKEYSCAN_BACK, 1902 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1903 TP_ACPI_HOTKEYSCAN_MIC_UP, 1904 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1905 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1906 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1907 1908 /* Lenovo extended keymap, starting at 0x1300 */ 1909 TP_ACPI_HOTKEYSCAN_EXTENDED_START, 1910 /* first new observed key (star, favorites) is 0x1311 */ 1911 TP_ACPI_HOTKEYSCAN_STAR = 69, 1912 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1913 TP_ACPI_HOTKEYSCAN_CALCULATOR, 1914 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1915 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1916 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ 1917 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, 1918 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, 1919 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, 1920 1921 /* Hotkey keymap size */ 1922 TPACPI_HOTKEY_MAP_LEN 1923 }; 1924 1925 enum { /* Keys/events available through NVRAM polling */ 1926 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1927 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1928 }; 1929 1930 enum { /* Positions of some of the keys in hotkey masks */ 1931 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1932 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1933 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1934 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1935 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1936 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1937 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1938 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1939 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1940 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1941 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1942 }; 1943 1944 enum { /* NVRAM to ACPI HKEY group map */ 1945 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1946 TP_ACPI_HKEY_ZOOM_MASK | 1947 TP_ACPI_HKEY_DISPSWTCH_MASK | 1948 TP_ACPI_HKEY_HIBERNATE_MASK, 1949 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1950 TP_ACPI_HKEY_BRGHTDWN_MASK, 1951 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1952 TP_ACPI_HKEY_VOLDWN_MASK | 1953 TP_ACPI_HKEY_MUTE_MASK, 1954 }; 1955 1956 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1957 struct tp_nvram_state { 1958 u16 thinkpad_toggle:1; 1959 u16 zoom_toggle:1; 1960 u16 display_toggle:1; 1961 u16 thinklight_toggle:1; 1962 u16 hibernate_toggle:1; 1963 u16 displayexp_toggle:1; 1964 u16 display_state:1; 1965 u16 brightness_toggle:1; 1966 u16 volume_toggle:1; 1967 u16 mute:1; 1968 1969 u8 brightness_level; 1970 u8 volume_level; 1971 }; 1972 1973 /* kthread for the hotkey poller */ 1974 static struct task_struct *tpacpi_hotkey_task; 1975 1976 /* 1977 * Acquire mutex to write poller control variables as an 1978 * atomic block. 1979 * 1980 * Increment hotkey_config_change when changing them if you 1981 * want the kthread to forget old state. 1982 * 1983 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1984 */ 1985 static struct mutex hotkey_thread_data_mutex; 1986 static unsigned int hotkey_config_change; 1987 1988 /* 1989 * hotkey poller control variables 1990 * 1991 * Must be atomic or readers will also need to acquire mutex 1992 * 1993 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1994 * should be used only when the changes need to be taken as 1995 * a block, OR when one needs to force the kthread to forget 1996 * old state. 1997 */ 1998 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 1999 static unsigned int hotkey_poll_freq = 10; /* Hz */ 2000 2001 #define HOTKEY_CONFIG_CRITICAL_START \ 2002 do { \ 2003 mutex_lock(&hotkey_thread_data_mutex); \ 2004 hotkey_config_change++; \ 2005 } while (0); 2006 #define HOTKEY_CONFIG_CRITICAL_END \ 2007 mutex_unlock(&hotkey_thread_data_mutex); 2008 2009 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2010 2011 #define hotkey_source_mask 0U 2012 #define HOTKEY_CONFIG_CRITICAL_START 2013 #define HOTKEY_CONFIG_CRITICAL_END 2014 2015 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2016 2017 static struct mutex hotkey_mutex; 2018 2019 static enum { /* Reasons for waking up */ 2020 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 2021 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 2022 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 2023 } hotkey_wakeup_reason; 2024 2025 static int hotkey_autosleep_ack; 2026 2027 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 2028 static u32 hotkey_all_mask; /* all events supported in fw */ 2029 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 2030 static u32 hotkey_reserved_mask; /* events better left disabled */ 2031 static u32 hotkey_driver_mask; /* events needed by the driver */ 2032 static u32 hotkey_user_mask; /* events visible to userspace */ 2033 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 2034 2035 static u16 *hotkey_keycode_map; 2036 2037 static struct attribute_set *hotkey_dev_attributes; 2038 2039 static void tpacpi_driver_event(const unsigned int hkey_event); 2040 static void hotkey_driver_event(const unsigned int scancode); 2041 static void hotkey_poll_setup(const bool may_warn); 2042 2043 /* HKEY.MHKG() return bits */ 2044 #define TP_HOTKEY_TABLET_MASK (1 << 3) 2045 enum { 2046 TP_ACPI_MULTI_MODE_INVALID = 0, 2047 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 2048 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 2049 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 2050 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 2051 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 2052 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 2053 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 2054 }; 2055 2056 enum { 2057 /* The following modes are considered tablet mode for the purpose of 2058 * reporting the status to userspace. i.e. in all these modes it makes 2059 * sense to disable the laptop input devices such as touchpad and 2060 * keyboard. 2061 */ 2062 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 2063 TP_ACPI_MULTI_MODE_STAND | 2064 TP_ACPI_MULTI_MODE_TENT | 2065 TP_ACPI_MULTI_MODE_STAND_TENT, 2066 }; 2067 2068 static int hotkey_get_wlsw(void) 2069 { 2070 int status; 2071 2072 if (!tp_features.hotkey_wlsw) 2073 return -ENODEV; 2074 2075 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 2076 if (dbg_wlswemul) 2077 return (tpacpi_wlsw_emulstate) ? 2078 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2079 #endif 2080 2081 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 2082 return -EIO; 2083 2084 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2085 } 2086 2087 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 2088 { 2089 int type = (s >> 16) & 0xffff; 2090 int value = s & 0xffff; 2091 int mode = TP_ACPI_MULTI_MODE_INVALID; 2092 int valid_modes = 0; 2093 2094 if (has_tablet_mode) 2095 *has_tablet_mode = 0; 2096 2097 switch (type) { 2098 case 1: 2099 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2100 TP_ACPI_MULTI_MODE_TABLET | 2101 TP_ACPI_MULTI_MODE_STAND_TENT; 2102 break; 2103 case 2: 2104 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2105 TP_ACPI_MULTI_MODE_FLAT | 2106 TP_ACPI_MULTI_MODE_TABLET | 2107 TP_ACPI_MULTI_MODE_STAND | 2108 TP_ACPI_MULTI_MODE_TENT; 2109 break; 2110 case 3: 2111 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2112 TP_ACPI_MULTI_MODE_FLAT; 2113 break; 2114 case 4: 2115 case 5: 2116 /* In mode 4, FLAT is not specified as a valid mode. However, 2117 * it can be seen at least on the X1 Yoga 2nd Generation. 2118 */ 2119 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2120 TP_ACPI_MULTI_MODE_FLAT | 2121 TP_ACPI_MULTI_MODE_TABLET | 2122 TP_ACPI_MULTI_MODE_STAND | 2123 TP_ACPI_MULTI_MODE_TENT; 2124 break; 2125 default: 2126 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2127 type, value, TPACPI_MAIL); 2128 return 0; 2129 } 2130 2131 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2132 *has_tablet_mode = 1; 2133 2134 switch (value) { 2135 case 1: 2136 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2137 break; 2138 case 2: 2139 mode = TP_ACPI_MULTI_MODE_FLAT; 2140 break; 2141 case 3: 2142 mode = TP_ACPI_MULTI_MODE_TABLET; 2143 break; 2144 case 4: 2145 if (type == 1) 2146 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2147 else 2148 mode = TP_ACPI_MULTI_MODE_STAND; 2149 break; 2150 case 5: 2151 mode = TP_ACPI_MULTI_MODE_TENT; 2152 break; 2153 default: 2154 if (type == 5 && value == 0xffff) { 2155 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2156 return 0; 2157 } 2158 } 2159 2160 if (!(mode & valid_modes)) { 2161 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2162 value, type, TPACPI_MAIL); 2163 return 0; 2164 } 2165 2166 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2167 } 2168 2169 static int hotkey_get_tablet_mode(int *status) 2170 { 2171 int s; 2172 2173 switch (tp_features.hotkey_tablet) { 2174 case TP_HOTKEY_TABLET_USES_MHKG: 2175 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2176 return -EIO; 2177 2178 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2179 break; 2180 case TP_HOTKEY_TABLET_USES_GMMS: 2181 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2182 return -EIO; 2183 2184 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2185 break; 2186 default: 2187 break; 2188 } 2189 2190 return 0; 2191 } 2192 2193 /* 2194 * Reads current event mask from firmware, and updates 2195 * hotkey_acpi_mask accordingly. Also resets any bits 2196 * from hotkey_user_mask that are unavailable to be 2197 * delivered (shadow requirement of the userspace ABI). 2198 * 2199 * Call with hotkey_mutex held 2200 */ 2201 static int hotkey_mask_get(void) 2202 { 2203 if (tp_features.hotkey_mask) { 2204 u32 m = 0; 2205 2206 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2207 return -EIO; 2208 2209 hotkey_acpi_mask = m; 2210 } else { 2211 /* no mask support doesn't mean no event support... */ 2212 hotkey_acpi_mask = hotkey_all_mask; 2213 } 2214 2215 /* sync userspace-visible mask */ 2216 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2217 2218 return 0; 2219 } 2220 2221 static void hotkey_mask_warn_incomplete_mask(void) 2222 { 2223 /* log only what the user can fix... */ 2224 const u32 wantedmask = hotkey_driver_mask & 2225 ~(hotkey_acpi_mask | hotkey_source_mask) & 2226 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2227 2228 if (wantedmask) 2229 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2230 } 2231 2232 /* 2233 * Set the firmware mask when supported 2234 * 2235 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2236 * 2237 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2238 * 2239 * Call with hotkey_mutex held 2240 */ 2241 static int hotkey_mask_set(u32 mask) 2242 { 2243 int i; 2244 int rc = 0; 2245 2246 const u32 fwmask = mask & ~hotkey_source_mask; 2247 2248 if (tp_features.hotkey_mask) { 2249 for (i = 0; i < 32; i++) { 2250 if (!acpi_evalf(hkey_handle, 2251 NULL, "MHKM", "vdd", i + 1, 2252 !!(mask & (1 << i)))) { 2253 rc = -EIO; 2254 break; 2255 } 2256 } 2257 } 2258 2259 /* 2260 * We *must* make an inconditional call to hotkey_mask_get to 2261 * refresh hotkey_acpi_mask and update hotkey_user_mask 2262 * 2263 * Take the opportunity to also log when we cannot _enable_ 2264 * a given event. 2265 */ 2266 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2267 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2268 fwmask, hotkey_acpi_mask); 2269 } 2270 2271 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2272 hotkey_mask_warn_incomplete_mask(); 2273 2274 return rc; 2275 } 2276 2277 /* 2278 * Sets hotkey_user_mask and tries to set the firmware mask 2279 * 2280 * Call with hotkey_mutex held 2281 */ 2282 static int hotkey_user_mask_set(const u32 mask) 2283 { 2284 int rc; 2285 2286 /* Give people a chance to notice they are doing something that 2287 * is bound to go boom on their users sooner or later */ 2288 if (!tp_warned.hotkey_mask_ff && 2289 (mask == 0xffff || mask == 0xffffff || 2290 mask == 0xffffffff)) { 2291 tp_warned.hotkey_mask_ff = 1; 2292 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2293 mask); 2294 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2295 } 2296 2297 /* Try to enable what the user asked for, plus whatever we need. 2298 * this syncs everything but won't enable bits in hotkey_user_mask */ 2299 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2300 2301 /* Enable the available bits in hotkey_user_mask */ 2302 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2303 2304 return rc; 2305 } 2306 2307 /* 2308 * Sets the driver hotkey mask. 2309 * 2310 * Can be called even if the hotkey subdriver is inactive 2311 */ 2312 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2313 { 2314 int rc; 2315 2316 /* Do the right thing if hotkey_init has not been called yet */ 2317 if (!tp_features.hotkey) { 2318 hotkey_driver_mask = mask; 2319 return 0; 2320 } 2321 2322 mutex_lock(&hotkey_mutex); 2323 2324 HOTKEY_CONFIG_CRITICAL_START 2325 hotkey_driver_mask = mask; 2326 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2327 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2328 #endif 2329 HOTKEY_CONFIG_CRITICAL_END 2330 2331 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2332 ~hotkey_source_mask); 2333 hotkey_poll_setup(true); 2334 2335 mutex_unlock(&hotkey_mutex); 2336 2337 return rc; 2338 } 2339 2340 static int hotkey_status_get(int *status) 2341 { 2342 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2343 return -EIO; 2344 2345 return 0; 2346 } 2347 2348 static int hotkey_status_set(bool enable) 2349 { 2350 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2351 return -EIO; 2352 2353 return 0; 2354 } 2355 2356 static void tpacpi_input_send_tabletsw(void) 2357 { 2358 int state; 2359 2360 if (tp_features.hotkey_tablet && 2361 !hotkey_get_tablet_mode(&state)) { 2362 mutex_lock(&tpacpi_inputdev_send_mutex); 2363 2364 input_report_switch(tpacpi_inputdev, 2365 SW_TABLET_MODE, !!state); 2366 input_sync(tpacpi_inputdev); 2367 2368 mutex_unlock(&tpacpi_inputdev_send_mutex); 2369 } 2370 } 2371 2372 /* Do NOT call without validating scancode first */ 2373 static void tpacpi_input_send_key(const unsigned int scancode) 2374 { 2375 const unsigned int keycode = hotkey_keycode_map[scancode]; 2376 2377 if (keycode != KEY_RESERVED) { 2378 mutex_lock(&tpacpi_inputdev_send_mutex); 2379 2380 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2381 input_report_key(tpacpi_inputdev, keycode, 1); 2382 input_sync(tpacpi_inputdev); 2383 2384 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2385 input_report_key(tpacpi_inputdev, keycode, 0); 2386 input_sync(tpacpi_inputdev); 2387 2388 mutex_unlock(&tpacpi_inputdev_send_mutex); 2389 } 2390 } 2391 2392 /* Do NOT call without validating scancode first */ 2393 static void tpacpi_input_send_key_masked(const unsigned int scancode) 2394 { 2395 hotkey_driver_event(scancode); 2396 if (hotkey_user_mask & (1 << scancode)) 2397 tpacpi_input_send_key(scancode); 2398 } 2399 2400 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2401 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2402 2403 /* Do NOT call without validating scancode first */ 2404 static void tpacpi_hotkey_send_key(unsigned int scancode) 2405 { 2406 tpacpi_input_send_key_masked(scancode); 2407 } 2408 2409 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2410 { 2411 u8 d; 2412 2413 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2414 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2415 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2416 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2417 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2418 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2419 } 2420 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2421 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2422 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2423 } 2424 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2425 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2426 n->displayexp_toggle = 2427 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2428 } 2429 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2430 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2431 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2432 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2433 n->brightness_toggle = 2434 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2435 } 2436 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2437 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2438 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2439 >> TP_NVRAM_POS_LEVEL_VOLUME; 2440 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2441 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2442 } 2443 } 2444 2445 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2446 do { \ 2447 if ((event_mask & (1 << __scancode)) && \ 2448 oldn->__member != newn->__member) \ 2449 tpacpi_hotkey_send_key(__scancode); \ 2450 } while (0) 2451 2452 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2453 do { \ 2454 if (event_mask & (1 << __scancode)) \ 2455 tpacpi_hotkey_send_key(__scancode); \ 2456 } while (0) 2457 2458 static void issue_volchange(const unsigned int oldvol, 2459 const unsigned int newvol, 2460 const u32 event_mask) 2461 { 2462 unsigned int i = oldvol; 2463 2464 while (i > newvol) { 2465 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2466 i--; 2467 } 2468 while (i < newvol) { 2469 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2470 i++; 2471 } 2472 } 2473 2474 static void issue_brightnesschange(const unsigned int oldbrt, 2475 const unsigned int newbrt, 2476 const u32 event_mask) 2477 { 2478 unsigned int i = oldbrt; 2479 2480 while (i > newbrt) { 2481 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2482 i--; 2483 } 2484 while (i < newbrt) { 2485 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2486 i++; 2487 } 2488 } 2489 2490 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2491 struct tp_nvram_state *newn, 2492 const u32 event_mask) 2493 { 2494 2495 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2496 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2497 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2498 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2499 2500 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2501 2502 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2503 2504 /* 2505 * Handle volume 2506 * 2507 * This code is supposed to duplicate the IBM firmware behaviour: 2508 * - Pressing MUTE issues mute hotkey message, even when already mute 2509 * - Pressing Volume up/down issues volume up/down hotkey messages, 2510 * even when already at maximum or minimum volume 2511 * - The act of unmuting issues volume up/down notification, 2512 * depending which key was used to unmute 2513 * 2514 * We are constrained to what the NVRAM can tell us, which is not much 2515 * and certainly not enough if more than one volume hotkey was pressed 2516 * since the last poll cycle. 2517 * 2518 * Just to make our life interesting, some newer Lenovo ThinkPads have 2519 * bugs in the BIOS and may fail to update volume_toggle properly. 2520 */ 2521 if (newn->mute) { 2522 /* muted */ 2523 if (!oldn->mute || 2524 oldn->volume_toggle != newn->volume_toggle || 2525 oldn->volume_level != newn->volume_level) { 2526 /* recently muted, or repeated mute keypress, or 2527 * multiple presses ending in mute */ 2528 issue_volchange(oldn->volume_level, newn->volume_level, 2529 event_mask); 2530 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2531 } 2532 } else { 2533 /* unmute */ 2534 if (oldn->mute) { 2535 /* recently unmuted, issue 'unmute' keypress */ 2536 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2537 } 2538 if (oldn->volume_level != newn->volume_level) { 2539 issue_volchange(oldn->volume_level, newn->volume_level, 2540 event_mask); 2541 } else if (oldn->volume_toggle != newn->volume_toggle) { 2542 /* repeated vol up/down keypress at end of scale ? */ 2543 if (newn->volume_level == 0) 2544 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2545 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2546 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2547 } 2548 } 2549 2550 /* handle brightness */ 2551 if (oldn->brightness_level != newn->brightness_level) { 2552 issue_brightnesschange(oldn->brightness_level, 2553 newn->brightness_level, event_mask); 2554 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2555 /* repeated key presses that didn't change state */ 2556 if (newn->brightness_level == 0) 2557 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2558 else if (newn->brightness_level >= bright_maxlvl 2559 && !tp_features.bright_unkfw) 2560 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2561 } 2562 2563 #undef TPACPI_COMPARE_KEY 2564 #undef TPACPI_MAY_SEND_KEY 2565 } 2566 2567 /* 2568 * Polling driver 2569 * 2570 * We track all events in hotkey_source_mask all the time, since 2571 * most of them are edge-based. We only issue those requested by 2572 * hotkey_user_mask or hotkey_driver_mask, though. 2573 */ 2574 static int hotkey_kthread(void *data) 2575 { 2576 struct tp_nvram_state s[2] = { 0 }; 2577 u32 poll_mask, event_mask; 2578 unsigned int si, so; 2579 unsigned long t; 2580 unsigned int change_detector; 2581 unsigned int poll_freq; 2582 bool was_frozen; 2583 2584 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2585 goto exit; 2586 2587 set_freezable(); 2588 2589 so = 0; 2590 si = 1; 2591 t = 0; 2592 2593 /* Initial state for compares */ 2594 mutex_lock(&hotkey_thread_data_mutex); 2595 change_detector = hotkey_config_change; 2596 poll_mask = hotkey_source_mask; 2597 event_mask = hotkey_source_mask & 2598 (hotkey_driver_mask | hotkey_user_mask); 2599 poll_freq = hotkey_poll_freq; 2600 mutex_unlock(&hotkey_thread_data_mutex); 2601 hotkey_read_nvram(&s[so], poll_mask); 2602 2603 while (!kthread_should_stop()) { 2604 if (t == 0) { 2605 if (likely(poll_freq)) 2606 t = 1000/poll_freq; 2607 else 2608 t = 100; /* should never happen... */ 2609 } 2610 t = msleep_interruptible(t); 2611 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2612 break; 2613 2614 if (t > 0 && !was_frozen) 2615 continue; 2616 2617 mutex_lock(&hotkey_thread_data_mutex); 2618 if (was_frozen || hotkey_config_change != change_detector) { 2619 /* forget old state on thaw or config change */ 2620 si = so; 2621 t = 0; 2622 change_detector = hotkey_config_change; 2623 } 2624 poll_mask = hotkey_source_mask; 2625 event_mask = hotkey_source_mask & 2626 (hotkey_driver_mask | hotkey_user_mask); 2627 poll_freq = hotkey_poll_freq; 2628 mutex_unlock(&hotkey_thread_data_mutex); 2629 2630 if (likely(poll_mask)) { 2631 hotkey_read_nvram(&s[si], poll_mask); 2632 if (likely(si != so)) { 2633 hotkey_compare_and_issue_event(&s[so], &s[si], 2634 event_mask); 2635 } 2636 } 2637 2638 so = si; 2639 si ^= 1; 2640 } 2641 2642 exit: 2643 return 0; 2644 } 2645 2646 /* call with hotkey_mutex held */ 2647 static void hotkey_poll_stop_sync(void) 2648 { 2649 if (tpacpi_hotkey_task) { 2650 kthread_stop(tpacpi_hotkey_task); 2651 tpacpi_hotkey_task = NULL; 2652 } 2653 } 2654 2655 /* call with hotkey_mutex held */ 2656 static void hotkey_poll_setup(const bool may_warn) 2657 { 2658 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2659 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2660 2661 if (hotkey_poll_freq > 0 && 2662 (poll_driver_mask || 2663 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2664 if (!tpacpi_hotkey_task) { 2665 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2666 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2667 if (IS_ERR(tpacpi_hotkey_task)) { 2668 tpacpi_hotkey_task = NULL; 2669 pr_err("could not create kernel thread for hotkey polling\n"); 2670 } 2671 } 2672 } else { 2673 hotkey_poll_stop_sync(); 2674 if (may_warn && (poll_driver_mask || poll_user_mask) && 2675 hotkey_poll_freq == 0) { 2676 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2677 poll_user_mask, poll_driver_mask); 2678 } 2679 } 2680 } 2681 2682 static void hotkey_poll_setup_safe(const bool may_warn) 2683 { 2684 mutex_lock(&hotkey_mutex); 2685 hotkey_poll_setup(may_warn); 2686 mutex_unlock(&hotkey_mutex); 2687 } 2688 2689 /* call with hotkey_mutex held */ 2690 static void hotkey_poll_set_freq(unsigned int freq) 2691 { 2692 if (!freq) 2693 hotkey_poll_stop_sync(); 2694 2695 hotkey_poll_freq = freq; 2696 } 2697 2698 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2699 2700 static void hotkey_poll_setup(const bool __unused) 2701 { 2702 } 2703 2704 static void hotkey_poll_setup_safe(const bool __unused) 2705 { 2706 } 2707 2708 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2709 2710 static int hotkey_inputdev_open(struct input_dev *dev) 2711 { 2712 switch (tpacpi_lifecycle) { 2713 case TPACPI_LIFE_INIT: 2714 case TPACPI_LIFE_RUNNING: 2715 hotkey_poll_setup_safe(false); 2716 return 0; 2717 case TPACPI_LIFE_EXITING: 2718 return -EBUSY; 2719 } 2720 2721 /* Should only happen if tpacpi_lifecycle is corrupt */ 2722 BUG(); 2723 return -EBUSY; 2724 } 2725 2726 static void hotkey_inputdev_close(struct input_dev *dev) 2727 { 2728 /* disable hotkey polling when possible */ 2729 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2730 !(hotkey_source_mask & hotkey_driver_mask)) 2731 hotkey_poll_setup_safe(false); 2732 } 2733 2734 /* sysfs hotkey enable ------------------------------------------------- */ 2735 static ssize_t hotkey_enable_show(struct device *dev, 2736 struct device_attribute *attr, 2737 char *buf) 2738 { 2739 int res, status; 2740 2741 printk_deprecated_attribute("hotkey_enable", 2742 "Hotkey reporting is always enabled"); 2743 2744 res = hotkey_status_get(&status); 2745 if (res) 2746 return res; 2747 2748 return snprintf(buf, PAGE_SIZE, "%d\n", status); 2749 } 2750 2751 static ssize_t hotkey_enable_store(struct device *dev, 2752 struct device_attribute *attr, 2753 const char *buf, size_t count) 2754 { 2755 unsigned long t; 2756 2757 printk_deprecated_attribute("hotkey_enable", 2758 "Hotkeys can be disabled through hotkey_mask"); 2759 2760 if (parse_strtoul(buf, 1, &t)) 2761 return -EINVAL; 2762 2763 if (t == 0) 2764 return -EPERM; 2765 2766 return count; 2767 } 2768 2769 static DEVICE_ATTR_RW(hotkey_enable); 2770 2771 /* sysfs hotkey mask --------------------------------------------------- */ 2772 static ssize_t hotkey_mask_show(struct device *dev, 2773 struct device_attribute *attr, 2774 char *buf) 2775 { 2776 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask); 2777 } 2778 2779 static ssize_t hotkey_mask_store(struct device *dev, 2780 struct device_attribute *attr, 2781 const char *buf, size_t count) 2782 { 2783 unsigned long t; 2784 int res; 2785 2786 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2787 return -EINVAL; 2788 2789 if (mutex_lock_killable(&hotkey_mutex)) 2790 return -ERESTARTSYS; 2791 2792 res = hotkey_user_mask_set(t); 2793 2794 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2795 hotkey_poll_setup(true); 2796 #endif 2797 2798 mutex_unlock(&hotkey_mutex); 2799 2800 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2801 2802 return (res) ? res : count; 2803 } 2804 2805 static DEVICE_ATTR_RW(hotkey_mask); 2806 2807 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2808 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2809 struct device_attribute *attr, 2810 char *buf) 2811 { 2812 return sprintf(buf, "0\n"); 2813 } 2814 2815 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2816 2817 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2818 static ssize_t hotkey_bios_mask_show(struct device *dev, 2819 struct device_attribute *attr, 2820 char *buf) 2821 { 2822 printk_deprecated_attribute("hotkey_bios_mask", 2823 "This attribute is useless."); 2824 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); 2825 } 2826 2827 static DEVICE_ATTR_RO(hotkey_bios_mask); 2828 2829 /* sysfs hotkey all_mask ----------------------------------------------- */ 2830 static ssize_t hotkey_all_mask_show(struct device *dev, 2831 struct device_attribute *attr, 2832 char *buf) 2833 { 2834 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2835 hotkey_all_mask | hotkey_source_mask); 2836 } 2837 2838 static DEVICE_ATTR_RO(hotkey_all_mask); 2839 2840 /* sysfs hotkey all_mask ----------------------------------------------- */ 2841 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2842 struct device_attribute *attr, 2843 char *buf) 2844 { 2845 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2846 hotkey_adaptive_all_mask | hotkey_source_mask); 2847 } 2848 2849 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2850 2851 /* sysfs hotkey recommended_mask --------------------------------------- */ 2852 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2853 struct device_attribute *attr, 2854 char *buf) 2855 { 2856 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2857 (hotkey_all_mask | hotkey_source_mask) 2858 & ~hotkey_reserved_mask); 2859 } 2860 2861 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2862 2863 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2864 2865 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2866 static ssize_t hotkey_source_mask_show(struct device *dev, 2867 struct device_attribute *attr, 2868 char *buf) 2869 { 2870 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); 2871 } 2872 2873 static ssize_t hotkey_source_mask_store(struct device *dev, 2874 struct device_attribute *attr, 2875 const char *buf, size_t count) 2876 { 2877 unsigned long t; 2878 u32 r_ev; 2879 int rc; 2880 2881 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2882 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2883 return -EINVAL; 2884 2885 if (mutex_lock_killable(&hotkey_mutex)) 2886 return -ERESTARTSYS; 2887 2888 HOTKEY_CONFIG_CRITICAL_START 2889 hotkey_source_mask = t; 2890 HOTKEY_CONFIG_CRITICAL_END 2891 2892 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2893 ~hotkey_source_mask); 2894 hotkey_poll_setup(true); 2895 2896 /* check if events needed by the driver got disabled */ 2897 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2898 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2899 2900 mutex_unlock(&hotkey_mutex); 2901 2902 if (rc < 0) 2903 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2904 2905 if (r_ev) 2906 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2907 r_ev); 2908 2909 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2910 2911 return (rc < 0) ? rc : count; 2912 } 2913 2914 static DEVICE_ATTR_RW(hotkey_source_mask); 2915 2916 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2917 static ssize_t hotkey_poll_freq_show(struct device *dev, 2918 struct device_attribute *attr, 2919 char *buf) 2920 { 2921 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); 2922 } 2923 2924 static ssize_t hotkey_poll_freq_store(struct device *dev, 2925 struct device_attribute *attr, 2926 const char *buf, size_t count) 2927 { 2928 unsigned long t; 2929 2930 if (parse_strtoul(buf, 25, &t)) 2931 return -EINVAL; 2932 2933 if (mutex_lock_killable(&hotkey_mutex)) 2934 return -ERESTARTSYS; 2935 2936 hotkey_poll_set_freq(t); 2937 hotkey_poll_setup(true); 2938 2939 mutex_unlock(&hotkey_mutex); 2940 2941 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2942 2943 return count; 2944 } 2945 2946 static DEVICE_ATTR_RW(hotkey_poll_freq); 2947 2948 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2949 2950 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2951 static ssize_t hotkey_radio_sw_show(struct device *dev, 2952 struct device_attribute *attr, 2953 char *buf) 2954 { 2955 int res; 2956 res = hotkey_get_wlsw(); 2957 if (res < 0) 2958 return res; 2959 2960 /* Opportunistic update */ 2961 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2962 2963 return snprintf(buf, PAGE_SIZE, "%d\n", 2964 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2965 } 2966 2967 static DEVICE_ATTR_RO(hotkey_radio_sw); 2968 2969 static void hotkey_radio_sw_notify_change(void) 2970 { 2971 if (tp_features.hotkey_wlsw) 2972 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2973 "hotkey_radio_sw"); 2974 } 2975 2976 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2977 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2978 struct device_attribute *attr, 2979 char *buf) 2980 { 2981 int res, s; 2982 res = hotkey_get_tablet_mode(&s); 2983 if (res < 0) 2984 return res; 2985 2986 return snprintf(buf, PAGE_SIZE, "%d\n", !!s); 2987 } 2988 2989 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2990 2991 static void hotkey_tablet_mode_notify_change(void) 2992 { 2993 if (tp_features.hotkey_tablet) 2994 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2995 "hotkey_tablet_mode"); 2996 } 2997 2998 /* sysfs wakeup reason (pollable) -------------------------------------- */ 2999 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 3000 struct device_attribute *attr, 3001 char *buf) 3002 { 3003 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); 3004 } 3005 3006 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 3007 3008 static void hotkey_wakeup_reason_notify_change(void) 3009 { 3010 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3011 "wakeup_reason"); 3012 } 3013 3014 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 3015 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 3016 struct device_attribute *attr, 3017 char *buf) 3018 { 3019 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); 3020 } 3021 3022 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 3023 hotkey_wakeup_hotunplug_complete_show, NULL); 3024 3025 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 3026 { 3027 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3028 "wakeup_hotunplug_complete"); 3029 } 3030 3031 /* sysfs adaptive kbd mode --------------------------------------------- */ 3032 3033 static int adaptive_keyboard_get_mode(void); 3034 static int adaptive_keyboard_set_mode(int new_mode); 3035 3036 enum ADAPTIVE_KEY_MODE { 3037 HOME_MODE, 3038 WEB_BROWSER_MODE, 3039 WEB_CONFERENCE_MODE, 3040 FUNCTION_MODE, 3041 LAYFLAT_MODE 3042 }; 3043 3044 static ssize_t adaptive_kbd_mode_show(struct device *dev, 3045 struct device_attribute *attr, 3046 char *buf) 3047 { 3048 int current_mode; 3049 3050 current_mode = adaptive_keyboard_get_mode(); 3051 if (current_mode < 0) 3052 return current_mode; 3053 3054 return snprintf(buf, PAGE_SIZE, "%d\n", current_mode); 3055 } 3056 3057 static ssize_t adaptive_kbd_mode_store(struct device *dev, 3058 struct device_attribute *attr, 3059 const char *buf, size_t count) 3060 { 3061 unsigned long t; 3062 int res; 3063 3064 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 3065 return -EINVAL; 3066 3067 res = adaptive_keyboard_set_mode(t); 3068 return (res < 0) ? res : count; 3069 } 3070 3071 static DEVICE_ATTR_RW(adaptive_kbd_mode); 3072 3073 static struct attribute *adaptive_kbd_attributes[] = { 3074 &dev_attr_adaptive_kbd_mode.attr, 3075 NULL 3076 }; 3077 3078 static const struct attribute_group adaptive_kbd_attr_group = { 3079 .attrs = adaptive_kbd_attributes, 3080 }; 3081 3082 /* --------------------------------------------------------------------- */ 3083 3084 static struct attribute *hotkey_attributes[] __initdata = { 3085 &dev_attr_hotkey_enable.attr, 3086 &dev_attr_hotkey_bios_enabled.attr, 3087 &dev_attr_hotkey_bios_mask.attr, 3088 &dev_attr_wakeup_reason.attr, 3089 &dev_attr_wakeup_hotunplug_complete.attr, 3090 &dev_attr_hotkey_mask.attr, 3091 &dev_attr_hotkey_all_mask.attr, 3092 &dev_attr_hotkey_adaptive_all_mask.attr, 3093 &dev_attr_hotkey_recommended_mask.attr, 3094 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3095 &dev_attr_hotkey_source_mask.attr, 3096 &dev_attr_hotkey_poll_freq.attr, 3097 #endif 3098 }; 3099 3100 /* 3101 * Sync both the hw and sw blocking state of all switches 3102 */ 3103 static void tpacpi_send_radiosw_update(void) 3104 { 3105 int wlsw; 3106 3107 /* 3108 * We must sync all rfkill controllers *before* issuing any 3109 * rfkill input events, or we will race the rfkill core input 3110 * handler. 3111 * 3112 * tpacpi_inputdev_send_mutex works as a synchronization point 3113 * for the above. 3114 * 3115 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3116 */ 3117 3118 wlsw = hotkey_get_wlsw(); 3119 3120 /* Sync hw blocking state first if it is hw-blocked */ 3121 if (wlsw == TPACPI_RFK_RADIO_OFF) 3122 tpacpi_rfk_update_hwblock_state(true); 3123 3124 /* Sync sw blocking state */ 3125 tpacpi_rfk_update_swstate_all(); 3126 3127 /* Sync hw blocking state last if it is hw-unblocked */ 3128 if (wlsw == TPACPI_RFK_RADIO_ON) 3129 tpacpi_rfk_update_hwblock_state(false); 3130 3131 /* Issue rfkill input event for WLSW switch */ 3132 if (!(wlsw < 0)) { 3133 mutex_lock(&tpacpi_inputdev_send_mutex); 3134 3135 input_report_switch(tpacpi_inputdev, 3136 SW_RFKILL_ALL, (wlsw > 0)); 3137 input_sync(tpacpi_inputdev); 3138 3139 mutex_unlock(&tpacpi_inputdev_send_mutex); 3140 } 3141 3142 /* 3143 * this can be unconditional, as we will poll state again 3144 * if userspace uses the notify to read data 3145 */ 3146 hotkey_radio_sw_notify_change(); 3147 } 3148 3149 static void hotkey_exit(void) 3150 { 3151 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3152 mutex_lock(&hotkey_mutex); 3153 hotkey_poll_stop_sync(); 3154 mutex_unlock(&hotkey_mutex); 3155 #endif 3156 3157 if (hotkey_dev_attributes) 3158 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3159 3160 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3161 "restoring original HKEY status and mask\n"); 3162 /* yes, there is a bitwise or below, we want the 3163 * functions to be called even if one of them fail */ 3164 if (((tp_features.hotkey_mask && 3165 hotkey_mask_set(hotkey_orig_mask)) | 3166 hotkey_status_set(false)) != 0) 3167 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3168 } 3169 3170 static void __init hotkey_unmap(const unsigned int scancode) 3171 { 3172 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3173 clear_bit(hotkey_keycode_map[scancode], 3174 tpacpi_inputdev->keybit); 3175 hotkey_keycode_map[scancode] = KEY_RESERVED; 3176 } 3177 } 3178 3179 /* 3180 * HKEY quirks: 3181 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3182 */ 3183 3184 #define TPACPI_HK_Q_INIMASK 0x0001 3185 3186 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3187 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3188 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3189 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3190 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3191 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3192 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3193 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3194 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3195 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3196 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3197 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3198 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3199 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3200 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3201 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3202 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3203 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3204 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3205 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3206 }; 3207 3208 typedef u16 tpacpi_keymap_entry_t; 3209 typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; 3210 3211 static int hotkey_init_tablet_mode(void) 3212 { 3213 int in_tablet_mode = 0, res; 3214 char *type = NULL; 3215 3216 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3217 int has_tablet_mode; 3218 3219 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3220 &has_tablet_mode); 3221 /* 3222 * The Yoga 11e series has 2 accelerometers described by a 3223 * BOSC0200 ACPI node. This setup relies on a Windows service 3224 * which calls special ACPI methods on this node to report 3225 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver 3226 * does not support this, so skip the hotkey on these models. 3227 */ 3228 if (has_tablet_mode && !acpi_dev_present("BOSC0200", "1", -1)) 3229 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3230 type = "GMMS"; 3231 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3232 /* For X41t, X60t, X61t Tablets... */ 3233 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3234 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3235 type = "MHKG"; 3236 } 3237 3238 if (!tp_features.hotkey_tablet) 3239 return 0; 3240 3241 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3242 type, in_tablet_mode ? "tablet" : "laptop"); 3243 3244 res = add_to_attr_set(hotkey_dev_attributes, 3245 &dev_attr_hotkey_tablet_mode.attr); 3246 if (res) 3247 return -1; 3248 3249 return in_tablet_mode; 3250 } 3251 3252 static int __init hotkey_init(struct ibm_init_struct *iibm) 3253 { 3254 /* Requirements for changing the default keymaps: 3255 * 3256 * 1. Many of the keys are mapped to KEY_RESERVED for very 3257 * good reasons. Do not change them unless you have deep 3258 * knowledge on the IBM and Lenovo ThinkPad firmware for 3259 * the various ThinkPad models. The driver behaves 3260 * differently for KEY_RESERVED: such keys have their 3261 * hot key mask *unset* in mask_recommended, and also 3262 * in the initial hot key mask programmed into the 3263 * firmware at driver load time, which means the firm- 3264 * ware may react very differently if you change them to 3265 * something else; 3266 * 3267 * 2. You must be subscribed to the linux-thinkpad and 3268 * ibm-acpi-devel mailing lists, and you should read the 3269 * list archives since 2007 if you want to change the 3270 * keymaps. This requirement exists so that you will 3271 * know the past history of problems with the thinkpad- 3272 * acpi driver keymaps, and also that you will be 3273 * listening to any bug reports; 3274 * 3275 * 3. Do not send thinkpad-acpi specific patches directly to 3276 * for merging, *ever*. Send them to the linux-acpi 3277 * mailinglist for comments. Merging is to be done only 3278 * through acpi-test and the ACPI maintainer. 3279 * 3280 * If the above is too much to ask, don't change the keymap. 3281 * Ask the thinkpad-acpi maintainer to do it, instead. 3282 */ 3283 3284 enum keymap_index { 3285 TPACPI_KEYMAP_IBM_GENERIC = 0, 3286 TPACPI_KEYMAP_LENOVO_GENERIC, 3287 }; 3288 3289 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3290 /* Generic keymap for IBM ThinkPads */ 3291 [TPACPI_KEYMAP_IBM_GENERIC] = { 3292 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3293 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3294 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3295 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3296 3297 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3298 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3299 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3300 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3301 3302 /* brightness: firmware always reacts to them */ 3303 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3304 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3305 3306 /* Thinklight: firmware always react to it */ 3307 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3308 3309 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3310 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3311 3312 /* Volume: firmware always react to it and reprograms 3313 * the built-in *extra* mixer. Never map it to control 3314 * another mixer by default. */ 3315 KEY_RESERVED, /* 0x14: VOLUME UP */ 3316 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3317 KEY_RESERVED, /* 0x16: MUTE */ 3318 3319 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3320 3321 /* (assignments unknown, please report if found) */ 3322 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3323 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3324 3325 /* No assignments, only used for Adaptive keyboards. */ 3326 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3327 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3328 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3329 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3330 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3331 3332 /* No assignment, used for newer Lenovo models */ 3333 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3334 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3335 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3336 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3337 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3338 KEY_UNKNOWN, KEY_UNKNOWN 3339 3340 }, 3341 3342 /* Generic keymap for Lenovo ThinkPads */ 3343 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3344 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3345 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3346 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3347 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3348 3349 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3350 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3351 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3352 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3353 3354 /* These should be enabled --only-- when ACPI video 3355 * is disabled (i.e. in "vendor" mode), and are handled 3356 * in a special way by the init code */ 3357 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3358 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3359 3360 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3361 3362 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3363 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3364 3365 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3366 * react to it and reprograms the built-in *extra* mixer. 3367 * Never map it to control another mixer by default. 3368 * 3369 * T60?, T61, R60?, R61: firmware and EC tries to send 3370 * these over the regular keyboard, so these are no-ops, 3371 * but there are still weird bugs re. MUTE, so do not 3372 * change unless you get test reports from all Lenovo 3373 * models. May cause the BIOS to interfere with the 3374 * HDA mixer. 3375 */ 3376 KEY_RESERVED, /* 0x14: VOLUME UP */ 3377 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3378 KEY_RESERVED, /* 0x16: MUTE */ 3379 3380 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3381 3382 /* (assignments unknown, please report if found) */ 3383 KEY_UNKNOWN, KEY_UNKNOWN, 3384 3385 /* 3386 * The mic mute button only sends 0x1a. It does not 3387 * automatically mute the mic or change the mute light. 3388 */ 3389 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3390 3391 /* (assignments unknown, please report if found) */ 3392 KEY_UNKNOWN, 3393 3394 /* Extra keys in use since the X240 / T440 / T540 */ 3395 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3396 3397 /* 3398 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3399 * The first item in this list is the Mute button which is 3400 * emitted with 0x103 through 3401 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3402 * symbol is held. 3403 * We'll need to offset those by 0x20. 3404 */ 3405 KEY_RESERVED, /* Mute held, 0x103 */ 3406 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3407 KEY_RESERVED, /* Clipping tool */ 3408 KEY_RESERVED, /* Cloud */ 3409 KEY_RESERVED, 3410 KEY_VOICECOMMAND, /* Voice */ 3411 KEY_RESERVED, 3412 KEY_RESERVED, /* Gestures */ 3413 KEY_RESERVED, 3414 KEY_RESERVED, 3415 KEY_RESERVED, 3416 KEY_CONFIG, /* Settings */ 3417 KEY_RESERVED, /* New tab */ 3418 KEY_REFRESH, /* Reload */ 3419 KEY_BACK, /* Back */ 3420 KEY_RESERVED, /* Microphone down */ 3421 KEY_RESERVED, /* Microphone up */ 3422 KEY_RESERVED, /* Microphone cancellation */ 3423 KEY_RESERVED, /* Camera mode */ 3424 KEY_RESERVED, /* Rotate display, 0x116 */ 3425 3426 /* 3427 * These are found in 2017 models (e.g. T470s, X270). 3428 * The lowest known value is 0x311, which according to 3429 * the manual should launch a user defined favorite 3430 * application. 3431 * 3432 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3433 * corresponding to 0x34. 3434 */ 3435 3436 /* (assignments unknown, please report if found) */ 3437 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3438 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3439 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3440 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3441 KEY_UNKNOWN, 3442 3443 KEY_BOOKMARKS, /* Favorite app, 0x311 */ 3444 KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */ 3445 KEY_CALC, /* Calculator (above numpad, P52) */ 3446 KEY_BLUETOOTH, /* Bluetooth */ 3447 KEY_KEYBOARD, /* Keyboard, 0x315 */ 3448 KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */ 3449 KEY_NOTIFICATION_CENTER, /* Notification Center */ 3450 KEY_PICKUP_PHONE, /* Answer incoming call */ 3451 KEY_HANGUP_PHONE, /* Decline incoming call */ 3452 }, 3453 }; 3454 3455 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3456 /* Generic maps (fallback) */ 3457 { 3458 .vendor = PCI_VENDOR_ID_IBM, 3459 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3460 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3461 }, 3462 { 3463 .vendor = PCI_VENDOR_ID_LENOVO, 3464 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3465 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3466 }, 3467 }; 3468 3469 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3470 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3471 3472 int res, i; 3473 int status; 3474 int hkeyv; 3475 bool radiosw_state = false; 3476 bool tabletsw_state = false; 3477 3478 unsigned long quirks; 3479 unsigned long keymap_id; 3480 3481 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3482 "initializing hotkey subdriver\n"); 3483 3484 BUG_ON(!tpacpi_inputdev); 3485 BUG_ON(tpacpi_inputdev->open != NULL || 3486 tpacpi_inputdev->close != NULL); 3487 3488 TPACPI_ACPIHANDLE_INIT(hkey); 3489 mutex_init(&hotkey_mutex); 3490 3491 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3492 mutex_init(&hotkey_thread_data_mutex); 3493 #endif 3494 3495 /* hotkey not supported on 570 */ 3496 tp_features.hotkey = hkey_handle != NULL; 3497 3498 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3499 "hotkeys are %s\n", 3500 str_supported(tp_features.hotkey)); 3501 3502 if (!tp_features.hotkey) 3503 return 1; 3504 3505 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3506 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3507 3508 tpacpi_disable_brightness_delay(); 3509 3510 /* MUST have enough space for all attributes to be added to 3511 * hotkey_dev_attributes */ 3512 hotkey_dev_attributes = create_attr_set( 3513 ARRAY_SIZE(hotkey_attributes) + 2, 3514 NULL); 3515 if (!hotkey_dev_attributes) 3516 return -ENOMEM; 3517 res = add_many_to_attr_set(hotkey_dev_attributes, 3518 hotkey_attributes, 3519 ARRAY_SIZE(hotkey_attributes)); 3520 if (res) 3521 goto err_exit; 3522 3523 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3524 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3525 for HKEY interface version 0x100 */ 3526 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3527 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3528 "firmware HKEY interface version: 0x%x\n", 3529 hkeyv); 3530 3531 switch (hkeyv >> 8) { 3532 case 1: 3533 /* 3534 * MHKV 0x100 in A31, R40, R40e, 3535 * T4x, X31, and later 3536 */ 3537 3538 /* Paranoia check AND init hotkey_all_mask */ 3539 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3540 "MHKA", "qd")) { 3541 pr_err("missing MHKA handler, please report this to %s\n", 3542 TPACPI_MAIL); 3543 /* Fallback: pre-init for FN+F3,F4,F12 */ 3544 hotkey_all_mask = 0x080cU; 3545 } else { 3546 tp_features.hotkey_mask = 1; 3547 } 3548 break; 3549 3550 case 2: 3551 /* 3552 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3553 */ 3554 3555 /* Paranoia check AND init hotkey_all_mask */ 3556 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3557 "MHKA", "dd", 1)) { 3558 pr_err("missing MHKA handler, please report this to %s\n", 3559 TPACPI_MAIL); 3560 /* Fallback: pre-init for FN+F3,F4,F12 */ 3561 hotkey_all_mask = 0x080cU; 3562 } else { 3563 tp_features.hotkey_mask = 1; 3564 } 3565 3566 /* 3567 * Check if we have an adaptive keyboard, like on the 3568 * Lenovo Carbon X1 2014 (2nd Gen). 3569 */ 3570 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3571 "MHKA", "dd", 2)) { 3572 if (hotkey_adaptive_all_mask != 0) { 3573 tp_features.has_adaptive_kbd = true; 3574 res = sysfs_create_group( 3575 &tpacpi_pdev->dev.kobj, 3576 &adaptive_kbd_attr_group); 3577 if (res) 3578 goto err_exit; 3579 } 3580 } else { 3581 tp_features.has_adaptive_kbd = false; 3582 hotkey_adaptive_all_mask = 0x0U; 3583 } 3584 break; 3585 3586 default: 3587 pr_err("unknown version of the HKEY interface: 0x%x\n", 3588 hkeyv); 3589 pr_err("please report this to %s\n", TPACPI_MAIL); 3590 break; 3591 } 3592 } 3593 3594 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3595 "hotkey masks are %s\n", 3596 str_supported(tp_features.hotkey_mask)); 3597 3598 /* Init hotkey_all_mask if not initialized yet */ 3599 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3600 (quirks & TPACPI_HK_Q_INIMASK)) 3601 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3602 3603 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3604 if (tp_features.hotkey_mask) { 3605 /* hotkey_source_mask *must* be zero for 3606 * the first hotkey_mask_get to return hotkey_orig_mask */ 3607 res = hotkey_mask_get(); 3608 if (res) 3609 goto err_exit; 3610 3611 hotkey_orig_mask = hotkey_acpi_mask; 3612 } else { 3613 hotkey_orig_mask = hotkey_all_mask; 3614 hotkey_acpi_mask = hotkey_all_mask; 3615 } 3616 3617 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3618 if (dbg_wlswemul) { 3619 tp_features.hotkey_wlsw = 1; 3620 radiosw_state = !!tpacpi_wlsw_emulstate; 3621 pr_info("radio switch emulation enabled\n"); 3622 } else 3623 #endif 3624 /* Not all thinkpads have a hardware radio switch */ 3625 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3626 tp_features.hotkey_wlsw = 1; 3627 radiosw_state = !!status; 3628 pr_info("radio switch found; radios are %s\n", 3629 enabled(status, 0)); 3630 } 3631 if (tp_features.hotkey_wlsw) 3632 res = add_to_attr_set(hotkey_dev_attributes, 3633 &dev_attr_hotkey_radio_sw.attr); 3634 3635 res = hotkey_init_tablet_mode(); 3636 if (res < 0) 3637 goto err_exit; 3638 3639 tabletsw_state = res; 3640 3641 res = register_attr_set_with_sysfs(hotkey_dev_attributes, 3642 &tpacpi_pdev->dev.kobj); 3643 if (res) 3644 goto err_exit; 3645 3646 /* Set up key map */ 3647 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3648 ARRAY_SIZE(tpacpi_keymap_qtable)); 3649 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3650 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3651 "using keymap number %lu\n", keymap_id); 3652 3653 hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id], 3654 TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); 3655 if (!hotkey_keycode_map) { 3656 pr_err("failed to allocate memory for key map\n"); 3657 res = -ENOMEM; 3658 goto err_exit; 3659 } 3660 3661 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3662 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3663 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3664 tpacpi_inputdev->keycode = hotkey_keycode_map; 3665 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3666 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3667 input_set_capability(tpacpi_inputdev, EV_KEY, 3668 hotkey_keycode_map[i]); 3669 } else { 3670 if (i < sizeof(hotkey_reserved_mask)*8) 3671 hotkey_reserved_mask |= 1 << i; 3672 } 3673 } 3674 3675 if (tp_features.hotkey_wlsw) { 3676 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3677 input_report_switch(tpacpi_inputdev, 3678 SW_RFKILL_ALL, radiosw_state); 3679 } 3680 if (tp_features.hotkey_tablet) { 3681 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3682 input_report_switch(tpacpi_inputdev, 3683 SW_TABLET_MODE, tabletsw_state); 3684 } 3685 3686 /* Do not issue duplicate brightness change events to 3687 * userspace. tpacpi_detect_brightness_capabilities() must have 3688 * been called before this point */ 3689 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3690 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3691 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3692 3693 /* Disable brightness up/down on Lenovo thinkpads when 3694 * ACPI is handling them, otherwise it is plain impossible 3695 * for userspace to do something even remotely sane */ 3696 hotkey_reserved_mask |= 3697 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3698 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3699 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3700 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3701 } 3702 3703 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3704 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3705 & ~hotkey_all_mask 3706 & ~hotkey_reserved_mask; 3707 3708 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3709 "hotkey source mask 0x%08x, polling freq %u\n", 3710 hotkey_source_mask, hotkey_poll_freq); 3711 #endif 3712 3713 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3714 "enabling firmware HKEY event interface...\n"); 3715 res = hotkey_status_set(true); 3716 if (res) { 3717 hotkey_exit(); 3718 return res; 3719 } 3720 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3721 | hotkey_driver_mask) 3722 & ~hotkey_source_mask); 3723 if (res < 0 && res != -ENXIO) { 3724 hotkey_exit(); 3725 return res; 3726 } 3727 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3728 & ~hotkey_reserved_mask; 3729 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3730 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3731 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3732 3733 tpacpi_inputdev->open = &hotkey_inputdev_open; 3734 tpacpi_inputdev->close = &hotkey_inputdev_close; 3735 3736 hotkey_poll_setup_safe(true); 3737 3738 return 0; 3739 3740 err_exit: 3741 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3742 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 3743 &adaptive_kbd_attr_group); 3744 3745 hotkey_dev_attributes = NULL; 3746 3747 return (res < 0) ? res : 1; 3748 } 3749 3750 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3751 * mode, Web conference mode, Function mode and Lay-flat mode. 3752 * We support Home mode and Function mode currently. 3753 * 3754 * Will consider support rest of modes in future. 3755 * 3756 */ 3757 static const int adaptive_keyboard_modes[] = { 3758 HOME_MODE, 3759 /* WEB_BROWSER_MODE = 2, 3760 WEB_CONFERENCE_MODE = 3, */ 3761 FUNCTION_MODE 3762 }; 3763 3764 #define DFR_CHANGE_ROW 0x101 3765 #define DFR_SHOW_QUICKVIEW_ROW 0x102 3766 #define FIRST_ADAPTIVE_KEY 0x103 3767 3768 /* press Fn key a while second, it will switch to Function Mode. Then 3769 * release Fn key, previous mode be restored. 3770 */ 3771 static bool adaptive_keyboard_mode_is_saved; 3772 static int adaptive_keyboard_prev_mode; 3773 3774 static int adaptive_keyboard_get_mode(void) 3775 { 3776 int mode = 0; 3777 3778 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3779 pr_err("Cannot read adaptive keyboard mode\n"); 3780 return -EIO; 3781 } 3782 3783 return mode; 3784 } 3785 3786 static int adaptive_keyboard_set_mode(int new_mode) 3787 { 3788 if (new_mode < 0 || 3789 new_mode > LAYFLAT_MODE) 3790 return -EINVAL; 3791 3792 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3793 pr_err("Cannot set adaptive keyboard mode\n"); 3794 return -EIO; 3795 } 3796 3797 return 0; 3798 } 3799 3800 static int adaptive_keyboard_get_next_mode(int mode) 3801 { 3802 size_t i; 3803 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3804 3805 for (i = 0; i <= max_mode; i++) { 3806 if (adaptive_keyboard_modes[i] == mode) 3807 break; 3808 } 3809 3810 if (i >= max_mode) 3811 i = 0; 3812 else 3813 i++; 3814 3815 return adaptive_keyboard_modes[i]; 3816 } 3817 3818 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3819 { 3820 int current_mode = 0; 3821 int new_mode = 0; 3822 int keycode; 3823 3824 switch (scancode) { 3825 case DFR_CHANGE_ROW: 3826 if (adaptive_keyboard_mode_is_saved) { 3827 new_mode = adaptive_keyboard_prev_mode; 3828 adaptive_keyboard_mode_is_saved = false; 3829 } else { 3830 current_mode = adaptive_keyboard_get_mode(); 3831 if (current_mode < 0) 3832 return false; 3833 new_mode = adaptive_keyboard_get_next_mode( 3834 current_mode); 3835 } 3836 3837 if (adaptive_keyboard_set_mode(new_mode) < 0) 3838 return false; 3839 3840 return true; 3841 3842 case DFR_SHOW_QUICKVIEW_ROW: 3843 current_mode = adaptive_keyboard_get_mode(); 3844 if (current_mode < 0) 3845 return false; 3846 3847 adaptive_keyboard_prev_mode = current_mode; 3848 adaptive_keyboard_mode_is_saved = true; 3849 3850 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3851 return false; 3852 return true; 3853 3854 default: 3855 if (scancode < FIRST_ADAPTIVE_KEY || 3856 scancode >= FIRST_ADAPTIVE_KEY + 3857 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3858 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3859 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3860 scancode); 3861 return false; 3862 } 3863 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3864 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3865 if (keycode != KEY_RESERVED) { 3866 mutex_lock(&tpacpi_inputdev_send_mutex); 3867 3868 input_report_key(tpacpi_inputdev, keycode, 1); 3869 input_sync(tpacpi_inputdev); 3870 3871 input_report_key(tpacpi_inputdev, keycode, 0); 3872 input_sync(tpacpi_inputdev); 3873 3874 mutex_unlock(&tpacpi_inputdev_send_mutex); 3875 } 3876 return true; 3877 } 3878 } 3879 3880 static bool hotkey_notify_hotkey(const u32 hkey, 3881 bool *send_acpi_ev, 3882 bool *ignore_acpi_ev) 3883 { 3884 /* 0x1000-0x1FFF: key presses */ 3885 unsigned int scancode = hkey & 0xfff; 3886 *send_acpi_ev = true; 3887 *ignore_acpi_ev = false; 3888 3889 /* 3890 * Original events are in the 0x10XX range, the adaptive keyboard 3891 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3892 * models, additional keys are emitted through 0x13XX. 3893 */ 3894 switch ((hkey >> 8) & 0xf) { 3895 case 0: 3896 if (scancode > 0 && 3897 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3898 /* HKEY event 0x1001 is scancode 0x00 */ 3899 scancode--; 3900 if (!(hotkey_source_mask & (1 << scancode))) { 3901 tpacpi_input_send_key_masked(scancode); 3902 *send_acpi_ev = false; 3903 } else { 3904 *ignore_acpi_ev = true; 3905 } 3906 return true; 3907 } 3908 break; 3909 3910 case 1: 3911 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3912 3913 case 3: 3914 /* Extended keycodes start at 0x300 and our offset into the map 3915 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3916 * will be positive, but might not be in the correct range. 3917 */ 3918 scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3919 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3920 scancode < TPACPI_HOTKEY_MAP_LEN) { 3921 tpacpi_input_send_key(scancode); 3922 return true; 3923 } 3924 break; 3925 } 3926 3927 return false; 3928 } 3929 3930 static bool hotkey_notify_wakeup(const u32 hkey, 3931 bool *send_acpi_ev, 3932 bool *ignore_acpi_ev) 3933 { 3934 /* 0x2000-0x2FFF: Wakeup reason */ 3935 *send_acpi_ev = true; 3936 *ignore_acpi_ev = false; 3937 3938 switch (hkey) { 3939 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3940 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3941 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3942 *ignore_acpi_ev = true; 3943 break; 3944 3945 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3946 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3947 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3948 *ignore_acpi_ev = true; 3949 break; 3950 3951 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3952 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3953 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3954 /* how to auto-heal: */ 3955 /* 2313: woke up from S3, go to S4/S5 */ 3956 /* 2413: woke up from S4, go to S5 */ 3957 break; 3958 3959 default: 3960 return false; 3961 } 3962 3963 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3964 pr_info("woke up due to a hot-unplug request...\n"); 3965 hotkey_wakeup_reason_notify_change(); 3966 } 3967 return true; 3968 } 3969 3970 static bool hotkey_notify_dockevent(const u32 hkey, 3971 bool *send_acpi_ev, 3972 bool *ignore_acpi_ev) 3973 { 3974 /* 0x4000-0x4FFF: dock-related events */ 3975 *send_acpi_ev = true; 3976 *ignore_acpi_ev = false; 3977 3978 switch (hkey) { 3979 case TP_HKEY_EV_UNDOCK_ACK: 3980 /* ACPI undock operation completed after wakeup */ 3981 hotkey_autosleep_ack = 1; 3982 pr_info("undocked\n"); 3983 hotkey_wakeup_hotunplug_complete_notify_change(); 3984 return true; 3985 3986 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3987 pr_info("docked into hotplug port replicator\n"); 3988 return true; 3989 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3990 pr_info("undocked from hotplug port replicator\n"); 3991 return true; 3992 3993 default: 3994 return false; 3995 } 3996 } 3997 3998 static bool hotkey_notify_usrevent(const u32 hkey, 3999 bool *send_acpi_ev, 4000 bool *ignore_acpi_ev) 4001 { 4002 /* 0x5000-0x5FFF: human interface helpers */ 4003 *send_acpi_ev = true; 4004 *ignore_acpi_ev = false; 4005 4006 switch (hkey) { 4007 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 4008 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 4009 return true; 4010 4011 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 4012 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 4013 tpacpi_input_send_tabletsw(); 4014 hotkey_tablet_mode_notify_change(); 4015 *send_acpi_ev = false; 4016 return true; 4017 4018 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 4019 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 4020 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 4021 /* do not propagate these events */ 4022 *ignore_acpi_ev = true; 4023 return true; 4024 4025 default: 4026 return false; 4027 } 4028 } 4029 4030 static void thermal_dump_all_sensors(void); 4031 4032 static bool hotkey_notify_6xxx(const u32 hkey, 4033 bool *send_acpi_ev, 4034 bool *ignore_acpi_ev) 4035 { 4036 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 4037 *send_acpi_ev = true; 4038 *ignore_acpi_ev = false; 4039 4040 switch (hkey) { 4041 case TP_HKEY_EV_THM_TABLE_CHANGED: 4042 pr_debug("EC reports: Thermal Table has changed\n"); 4043 /* recommended action: do nothing, we don't have 4044 * Lenovo ATM information */ 4045 return true; 4046 case TP_HKEY_EV_THM_CSM_COMPLETED: 4047 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 4048 /* Thermal event - pass on to event handler */ 4049 tpacpi_driver_event(hkey); 4050 return true; 4051 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 4052 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 4053 /* recommended action: do nothing, we don't have 4054 * Lenovo ATM information */ 4055 return true; 4056 case TP_HKEY_EV_ALARM_BAT_HOT: 4057 pr_crit("THERMAL ALARM: battery is too hot!\n"); 4058 /* recommended action: warn user through gui */ 4059 break; 4060 case TP_HKEY_EV_ALARM_BAT_XHOT: 4061 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 4062 /* recommended action: immediate sleep/hibernate */ 4063 break; 4064 case TP_HKEY_EV_ALARM_SENSOR_HOT: 4065 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 4066 /* recommended action: warn user through gui, that */ 4067 /* some internal component is too hot */ 4068 break; 4069 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 4070 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 4071 /* recommended action: immediate sleep/hibernate */ 4072 break; 4073 case TP_HKEY_EV_AC_CHANGED: 4074 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 4075 * AC status changed; can be triggered by plugging or 4076 * unplugging AC adapter, docking or undocking. */ 4077 4078 fallthrough; 4079 4080 case TP_HKEY_EV_KEY_NUMLOCK: 4081 case TP_HKEY_EV_KEY_FN: 4082 case TP_HKEY_EV_KEY_FN_ESC: 4083 /* key press events, we just ignore them as long as the EC 4084 * is still reporting them in the normal keyboard stream */ 4085 *send_acpi_ev = false; 4086 *ignore_acpi_ev = true; 4087 return true; 4088 4089 case TP_HKEY_EV_TABLET_CHANGED: 4090 tpacpi_input_send_tabletsw(); 4091 hotkey_tablet_mode_notify_change(); 4092 *send_acpi_ev = false; 4093 return true; 4094 4095 case TP_HKEY_EV_PALM_DETECTED: 4096 case TP_HKEY_EV_PALM_UNDETECTED: 4097 /* palm detected hovering the keyboard, forward to user-space 4098 * via netlink for consumption */ 4099 return true; 4100 4101 default: 4102 /* report simply as unknown, no sensor dump */ 4103 return false; 4104 } 4105 4106 thermal_dump_all_sensors(); 4107 return true; 4108 } 4109 4110 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 4111 { 4112 u32 hkey; 4113 bool send_acpi_ev; 4114 bool ignore_acpi_ev; 4115 bool known_ev; 4116 4117 if (event != 0x80) { 4118 pr_err("unknown HKEY notification event %d\n", event); 4119 /* forward it to userspace, maybe it knows how to handle it */ 4120 acpi_bus_generate_netlink_event( 4121 ibm->acpi->device->pnp.device_class, 4122 dev_name(&ibm->acpi->device->dev), 4123 event, 0); 4124 return; 4125 } 4126 4127 while (1) { 4128 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4129 pr_err("failed to retrieve HKEY event\n"); 4130 return; 4131 } 4132 4133 if (hkey == 0) { 4134 /* queue empty */ 4135 return; 4136 } 4137 4138 send_acpi_ev = true; 4139 ignore_acpi_ev = false; 4140 4141 switch (hkey >> 12) { 4142 case 1: 4143 /* 0x1000-0x1FFF: key presses */ 4144 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4145 &ignore_acpi_ev); 4146 break; 4147 case 2: 4148 /* 0x2000-0x2FFF: Wakeup reason */ 4149 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4150 &ignore_acpi_ev); 4151 break; 4152 case 3: 4153 /* 0x3000-0x3FFF: bay-related wakeups */ 4154 switch (hkey) { 4155 case TP_HKEY_EV_BAYEJ_ACK: 4156 hotkey_autosleep_ack = 1; 4157 pr_info("bay ejected\n"); 4158 hotkey_wakeup_hotunplug_complete_notify_change(); 4159 known_ev = true; 4160 break; 4161 case TP_HKEY_EV_OPTDRV_EJ: 4162 /* FIXME: kick libata if SATA link offline */ 4163 known_ev = true; 4164 break; 4165 default: 4166 known_ev = false; 4167 } 4168 break; 4169 case 4: 4170 /* 0x4000-0x4FFF: dock-related events */ 4171 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4172 &ignore_acpi_ev); 4173 break; 4174 case 5: 4175 /* 0x5000-0x5FFF: human interface helpers */ 4176 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4177 &ignore_acpi_ev); 4178 break; 4179 case 6: 4180 /* 0x6000-0x6FFF: thermal alarms/notices and 4181 * keyboard events */ 4182 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4183 &ignore_acpi_ev); 4184 break; 4185 case 7: 4186 /* 0x7000-0x7FFF: misc */ 4187 if (tp_features.hotkey_wlsw && 4188 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4189 tpacpi_send_radiosw_update(); 4190 send_acpi_ev = 0; 4191 known_ev = true; 4192 break; 4193 } 4194 fallthrough; /* to default */ 4195 default: 4196 known_ev = false; 4197 } 4198 if (!known_ev) { 4199 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4200 pr_notice("please report the conditions when this event happened to %s\n", 4201 TPACPI_MAIL); 4202 } 4203 4204 /* netlink events */ 4205 if (!ignore_acpi_ev && send_acpi_ev) { 4206 acpi_bus_generate_netlink_event( 4207 ibm->acpi->device->pnp.device_class, 4208 dev_name(&ibm->acpi->device->dev), 4209 event, hkey); 4210 } 4211 } 4212 } 4213 4214 static void hotkey_suspend(void) 4215 { 4216 /* Do these on suspend, we get the events on early resume! */ 4217 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4218 hotkey_autosleep_ack = 0; 4219 4220 /* save previous mode of adaptive keyboard of X1 Carbon */ 4221 if (tp_features.has_adaptive_kbd) { 4222 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4223 "GTRW", "dd", 0)) { 4224 pr_err("Cannot read adaptive keyboard mode.\n"); 4225 } 4226 } 4227 } 4228 4229 static void hotkey_resume(void) 4230 { 4231 tpacpi_disable_brightness_delay(); 4232 4233 if (hotkey_status_set(true) < 0 || 4234 hotkey_mask_set(hotkey_acpi_mask) < 0) 4235 pr_err("error while attempting to reset the event firmware interface\n"); 4236 4237 tpacpi_send_radiosw_update(); 4238 tpacpi_input_send_tabletsw(); 4239 hotkey_tablet_mode_notify_change(); 4240 hotkey_wakeup_reason_notify_change(); 4241 hotkey_wakeup_hotunplug_complete_notify_change(); 4242 hotkey_poll_setup_safe(false); 4243 4244 /* restore previous mode of adapive keyboard of X1 Carbon */ 4245 if (tp_features.has_adaptive_kbd) { 4246 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4247 adaptive_keyboard_prev_mode)) { 4248 pr_err("Cannot set adaptive keyboard mode.\n"); 4249 } 4250 } 4251 } 4252 4253 /* procfs -------------------------------------------------------------- */ 4254 static int hotkey_read(struct seq_file *m) 4255 { 4256 int res, status; 4257 4258 if (!tp_features.hotkey) { 4259 seq_printf(m, "status:\t\tnot supported\n"); 4260 return 0; 4261 } 4262 4263 if (mutex_lock_killable(&hotkey_mutex)) 4264 return -ERESTARTSYS; 4265 res = hotkey_status_get(&status); 4266 if (!res) 4267 res = hotkey_mask_get(); 4268 mutex_unlock(&hotkey_mutex); 4269 if (res) 4270 return res; 4271 4272 seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); 4273 if (hotkey_all_mask) { 4274 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4275 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4276 } else { 4277 seq_printf(m, "mask:\t\tnot supported\n"); 4278 seq_printf(m, "commands:\tenable, disable, reset\n"); 4279 } 4280 4281 return 0; 4282 } 4283 4284 static void hotkey_enabledisable_warn(bool enable) 4285 { 4286 tpacpi_log_usertask("procfs hotkey enable/disable"); 4287 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4288 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4289 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4290 } 4291 4292 static int hotkey_write(char *buf) 4293 { 4294 int res; 4295 u32 mask; 4296 char *cmd; 4297 4298 if (!tp_features.hotkey) 4299 return -ENODEV; 4300 4301 if (mutex_lock_killable(&hotkey_mutex)) 4302 return -ERESTARTSYS; 4303 4304 mask = hotkey_user_mask; 4305 4306 res = 0; 4307 while ((cmd = strsep(&buf, ","))) { 4308 if (strlencmp(cmd, "enable") == 0) { 4309 hotkey_enabledisable_warn(1); 4310 } else if (strlencmp(cmd, "disable") == 0) { 4311 hotkey_enabledisable_warn(0); 4312 res = -EPERM; 4313 } else if (strlencmp(cmd, "reset") == 0) { 4314 mask = (hotkey_all_mask | hotkey_source_mask) 4315 & ~hotkey_reserved_mask; 4316 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4317 /* mask set */ 4318 } else if (sscanf(cmd, "%x", &mask) == 1) { 4319 /* mask set */ 4320 } else { 4321 res = -EINVAL; 4322 goto errexit; 4323 } 4324 } 4325 4326 if (!res) { 4327 tpacpi_disclose_usertask("procfs hotkey", 4328 "set mask to 0x%08x\n", mask); 4329 res = hotkey_user_mask_set(mask); 4330 } 4331 4332 errexit: 4333 mutex_unlock(&hotkey_mutex); 4334 return res; 4335 } 4336 4337 static const struct acpi_device_id ibm_htk_device_ids[] = { 4338 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4339 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4340 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4341 {"", 0}, 4342 }; 4343 4344 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4345 .hid = ibm_htk_device_ids, 4346 .notify = hotkey_notify, 4347 .handle = &hkey_handle, 4348 .type = ACPI_DEVICE_NOTIFY, 4349 }; 4350 4351 static struct ibm_struct hotkey_driver_data = { 4352 .name = "hotkey", 4353 .read = hotkey_read, 4354 .write = hotkey_write, 4355 .exit = hotkey_exit, 4356 .resume = hotkey_resume, 4357 .suspend = hotkey_suspend, 4358 .acpi = &ibm_hotkey_acpidriver, 4359 }; 4360 4361 /************************************************************************* 4362 * Bluetooth subdriver 4363 */ 4364 4365 enum { 4366 /* ACPI GBDC/SBDC bits */ 4367 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4368 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4369 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4370 0 = disable, 1 = enable */ 4371 }; 4372 4373 enum { 4374 /* ACPI \BLTH commands */ 4375 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4376 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4377 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4378 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4379 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4380 }; 4381 4382 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4383 4384 static int bluetooth_get_status(void) 4385 { 4386 int status; 4387 4388 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4389 if (dbg_bluetoothemul) 4390 return (tpacpi_bluetooth_emulstate) ? 4391 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4392 #endif 4393 4394 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4395 return -EIO; 4396 4397 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4398 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4399 } 4400 4401 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4402 { 4403 int status; 4404 4405 vdbg_printk(TPACPI_DBG_RFKILL, 4406 "will attempt to %s bluetooth\n", 4407 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4408 4409 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4410 if (dbg_bluetoothemul) { 4411 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4412 return 0; 4413 } 4414 #endif 4415 4416 if (state == TPACPI_RFK_RADIO_ON) 4417 status = TP_ACPI_BLUETOOTH_RADIOSSW 4418 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4419 else 4420 status = 0; 4421 4422 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4423 return -EIO; 4424 4425 return 0; 4426 } 4427 4428 /* sysfs bluetooth enable ---------------------------------------------- */ 4429 static ssize_t bluetooth_enable_show(struct device *dev, 4430 struct device_attribute *attr, 4431 char *buf) 4432 { 4433 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4434 attr, buf); 4435 } 4436 4437 static ssize_t bluetooth_enable_store(struct device *dev, 4438 struct device_attribute *attr, 4439 const char *buf, size_t count) 4440 { 4441 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4442 attr, buf, count); 4443 } 4444 4445 static DEVICE_ATTR_RW(bluetooth_enable); 4446 4447 /* --------------------------------------------------------------------- */ 4448 4449 static struct attribute *bluetooth_attributes[] = { 4450 &dev_attr_bluetooth_enable.attr, 4451 NULL 4452 }; 4453 4454 static const struct attribute_group bluetooth_attr_group = { 4455 .attrs = bluetooth_attributes, 4456 }; 4457 4458 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4459 .get_status = bluetooth_get_status, 4460 .set_status = bluetooth_set_status, 4461 }; 4462 4463 static void bluetooth_shutdown(void) 4464 { 4465 /* Order firmware to save current state to NVRAM */ 4466 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4467 TP_ACPI_BLTH_SAVE_STATE)) 4468 pr_notice("failed to save bluetooth state to NVRAM\n"); 4469 else 4470 vdbg_printk(TPACPI_DBG_RFKILL, 4471 "bluetooth state saved to NVRAM\n"); 4472 } 4473 4474 static void bluetooth_exit(void) 4475 { 4476 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4477 &bluetooth_attr_group); 4478 4479 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4480 4481 bluetooth_shutdown(); 4482 } 4483 4484 static const struct dmi_system_id bt_fwbug_list[] __initconst = { 4485 { 4486 .ident = "ThinkPad E485", 4487 .matches = { 4488 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4489 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4490 }, 4491 }, 4492 { 4493 .ident = "ThinkPad E585", 4494 .matches = { 4495 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4496 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4497 }, 4498 }, 4499 { 4500 .ident = "ThinkPad A285 - 20MW", 4501 .matches = { 4502 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4503 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4504 }, 4505 }, 4506 { 4507 .ident = "ThinkPad A285 - 20MX", 4508 .matches = { 4509 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4510 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4511 }, 4512 }, 4513 { 4514 .ident = "ThinkPad A485 - 20MU", 4515 .matches = { 4516 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4517 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4518 }, 4519 }, 4520 { 4521 .ident = "ThinkPad A485 - 20MV", 4522 .matches = { 4523 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4524 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4525 }, 4526 }, 4527 {} 4528 }; 4529 4530 static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4531 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4532 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4533 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4534 {} 4535 }; 4536 4537 4538 static int __init have_bt_fwbug(void) 4539 { 4540 /* 4541 * Some AMD based ThinkPads have a firmware bug that calling 4542 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4543 */ 4544 if (dmi_check_system(bt_fwbug_list) && pci_dev_present(fwbug_cards_ids)) { 4545 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4546 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4547 return 1; 4548 } else 4549 return 0; 4550 } 4551 4552 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4553 { 4554 int res; 4555 int status = 0; 4556 4557 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4558 "initializing bluetooth subdriver\n"); 4559 4560 TPACPI_ACPIHANDLE_INIT(hkey); 4561 4562 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4563 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4564 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4565 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4566 4567 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4568 "bluetooth is %s, status 0x%02x\n", 4569 str_supported(tp_features.bluetooth), 4570 status); 4571 4572 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4573 if (dbg_bluetoothemul) { 4574 tp_features.bluetooth = 1; 4575 pr_info("bluetooth switch emulation enabled\n"); 4576 } else 4577 #endif 4578 if (tp_features.bluetooth && 4579 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4580 /* no bluetooth hardware present in system */ 4581 tp_features.bluetooth = 0; 4582 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4583 "bluetooth hardware not installed\n"); 4584 } 4585 4586 if (!tp_features.bluetooth) 4587 return 1; 4588 4589 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4590 &bluetooth_tprfk_ops, 4591 RFKILL_TYPE_BLUETOOTH, 4592 TPACPI_RFK_BLUETOOTH_SW_NAME, 4593 true); 4594 if (res) 4595 return res; 4596 4597 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4598 &bluetooth_attr_group); 4599 if (res) { 4600 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4601 return res; 4602 } 4603 4604 return 0; 4605 } 4606 4607 /* procfs -------------------------------------------------------------- */ 4608 static int bluetooth_read(struct seq_file *m) 4609 { 4610 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4611 } 4612 4613 static int bluetooth_write(char *buf) 4614 { 4615 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4616 } 4617 4618 static struct ibm_struct bluetooth_driver_data = { 4619 .name = "bluetooth", 4620 .read = bluetooth_read, 4621 .write = bluetooth_write, 4622 .exit = bluetooth_exit, 4623 .shutdown = bluetooth_shutdown, 4624 }; 4625 4626 /************************************************************************* 4627 * Wan subdriver 4628 */ 4629 4630 enum { 4631 /* ACPI GWAN/SWAN bits */ 4632 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4633 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4634 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4635 0 = disable, 1 = enable */ 4636 }; 4637 4638 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4639 4640 static int wan_get_status(void) 4641 { 4642 int status; 4643 4644 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4645 if (dbg_wwanemul) 4646 return (tpacpi_wwan_emulstate) ? 4647 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4648 #endif 4649 4650 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4651 return -EIO; 4652 4653 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4654 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4655 } 4656 4657 static int wan_set_status(enum tpacpi_rfkill_state state) 4658 { 4659 int status; 4660 4661 vdbg_printk(TPACPI_DBG_RFKILL, 4662 "will attempt to %s wwan\n", 4663 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4664 4665 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4666 if (dbg_wwanemul) { 4667 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4668 return 0; 4669 } 4670 #endif 4671 4672 if (state == TPACPI_RFK_RADIO_ON) 4673 status = TP_ACPI_WANCARD_RADIOSSW 4674 | TP_ACPI_WANCARD_RESUMECTRL; 4675 else 4676 status = 0; 4677 4678 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4679 return -EIO; 4680 4681 return 0; 4682 } 4683 4684 /* sysfs wan enable ---------------------------------------------------- */ 4685 static ssize_t wan_enable_show(struct device *dev, 4686 struct device_attribute *attr, 4687 char *buf) 4688 { 4689 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4690 attr, buf); 4691 } 4692 4693 static ssize_t wan_enable_store(struct device *dev, 4694 struct device_attribute *attr, 4695 const char *buf, size_t count) 4696 { 4697 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4698 attr, buf, count); 4699 } 4700 4701 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4702 wan_enable_show, wan_enable_store); 4703 4704 /* --------------------------------------------------------------------- */ 4705 4706 static struct attribute *wan_attributes[] = { 4707 &dev_attr_wwan_enable.attr, 4708 NULL 4709 }; 4710 4711 static const struct attribute_group wan_attr_group = { 4712 .attrs = wan_attributes, 4713 }; 4714 4715 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4716 .get_status = wan_get_status, 4717 .set_status = wan_set_status, 4718 }; 4719 4720 static void wan_shutdown(void) 4721 { 4722 /* Order firmware to save current state to NVRAM */ 4723 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4724 TP_ACPI_WGSV_SAVE_STATE)) 4725 pr_notice("failed to save WWAN state to NVRAM\n"); 4726 else 4727 vdbg_printk(TPACPI_DBG_RFKILL, 4728 "WWAN state saved to NVRAM\n"); 4729 } 4730 4731 static void wan_exit(void) 4732 { 4733 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4734 &wan_attr_group); 4735 4736 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4737 4738 wan_shutdown(); 4739 } 4740 4741 static int __init wan_init(struct ibm_init_struct *iibm) 4742 { 4743 int res; 4744 int status = 0; 4745 4746 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4747 "initializing wan subdriver\n"); 4748 4749 TPACPI_ACPIHANDLE_INIT(hkey); 4750 4751 tp_features.wan = hkey_handle && 4752 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4753 4754 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4755 "wan is %s, status 0x%02x\n", 4756 str_supported(tp_features.wan), 4757 status); 4758 4759 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4760 if (dbg_wwanemul) { 4761 tp_features.wan = 1; 4762 pr_info("wwan switch emulation enabled\n"); 4763 } else 4764 #endif 4765 if (tp_features.wan && 4766 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4767 /* no wan hardware present in system */ 4768 tp_features.wan = 0; 4769 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4770 "wan hardware not installed\n"); 4771 } 4772 4773 if (!tp_features.wan) 4774 return 1; 4775 4776 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4777 &wan_tprfk_ops, 4778 RFKILL_TYPE_WWAN, 4779 TPACPI_RFK_WWAN_SW_NAME, 4780 true); 4781 if (res) 4782 return res; 4783 4784 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4785 &wan_attr_group); 4786 4787 if (res) { 4788 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4789 return res; 4790 } 4791 4792 return 0; 4793 } 4794 4795 /* procfs -------------------------------------------------------------- */ 4796 static int wan_read(struct seq_file *m) 4797 { 4798 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4799 } 4800 4801 static int wan_write(char *buf) 4802 { 4803 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4804 } 4805 4806 static struct ibm_struct wan_driver_data = { 4807 .name = "wan", 4808 .read = wan_read, 4809 .write = wan_write, 4810 .exit = wan_exit, 4811 .shutdown = wan_shutdown, 4812 }; 4813 4814 /************************************************************************* 4815 * UWB subdriver 4816 */ 4817 4818 enum { 4819 /* ACPI GUWB/SUWB bits */ 4820 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4821 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4822 }; 4823 4824 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4825 4826 static int uwb_get_status(void) 4827 { 4828 int status; 4829 4830 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4831 if (dbg_uwbemul) 4832 return (tpacpi_uwb_emulstate) ? 4833 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4834 #endif 4835 4836 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4837 return -EIO; 4838 4839 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4840 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4841 } 4842 4843 static int uwb_set_status(enum tpacpi_rfkill_state state) 4844 { 4845 int status; 4846 4847 vdbg_printk(TPACPI_DBG_RFKILL, 4848 "will attempt to %s UWB\n", 4849 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4850 4851 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4852 if (dbg_uwbemul) { 4853 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4854 return 0; 4855 } 4856 #endif 4857 4858 if (state == TPACPI_RFK_RADIO_ON) 4859 status = TP_ACPI_UWB_RADIOSSW; 4860 else 4861 status = 0; 4862 4863 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4864 return -EIO; 4865 4866 return 0; 4867 } 4868 4869 /* --------------------------------------------------------------------- */ 4870 4871 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4872 .get_status = uwb_get_status, 4873 .set_status = uwb_set_status, 4874 }; 4875 4876 static void uwb_exit(void) 4877 { 4878 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4879 } 4880 4881 static int __init uwb_init(struct ibm_init_struct *iibm) 4882 { 4883 int res; 4884 int status = 0; 4885 4886 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4887 "initializing uwb subdriver\n"); 4888 4889 TPACPI_ACPIHANDLE_INIT(hkey); 4890 4891 tp_features.uwb = hkey_handle && 4892 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4893 4894 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4895 "uwb is %s, status 0x%02x\n", 4896 str_supported(tp_features.uwb), 4897 status); 4898 4899 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4900 if (dbg_uwbemul) { 4901 tp_features.uwb = 1; 4902 pr_info("uwb switch emulation enabled\n"); 4903 } else 4904 #endif 4905 if (tp_features.uwb && 4906 !(status & TP_ACPI_UWB_HWPRESENT)) { 4907 /* no uwb hardware present in system */ 4908 tp_features.uwb = 0; 4909 dbg_printk(TPACPI_DBG_INIT, 4910 "uwb hardware not installed\n"); 4911 } 4912 4913 if (!tp_features.uwb) 4914 return 1; 4915 4916 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4917 &uwb_tprfk_ops, 4918 RFKILL_TYPE_UWB, 4919 TPACPI_RFK_UWB_SW_NAME, 4920 false); 4921 return res; 4922 } 4923 4924 static struct ibm_struct uwb_driver_data = { 4925 .name = "uwb", 4926 .exit = uwb_exit, 4927 .flags.experimental = 1, 4928 }; 4929 4930 /************************************************************************* 4931 * Video subdriver 4932 */ 4933 4934 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4935 4936 enum video_access_mode { 4937 TPACPI_VIDEO_NONE = 0, 4938 TPACPI_VIDEO_570, /* 570 */ 4939 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4940 TPACPI_VIDEO_NEW, /* all others */ 4941 }; 4942 4943 enum { /* video status flags, based on VIDEO_570 */ 4944 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4945 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4946 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4947 }; 4948 4949 enum { /* TPACPI_VIDEO_570 constants */ 4950 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4951 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4952 * video_status_flags */ 4953 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4954 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4955 }; 4956 4957 static enum video_access_mode video_supported; 4958 static int video_orig_autosw; 4959 4960 static int video_autosw_get(void); 4961 static int video_autosw_set(int enable); 4962 4963 TPACPI_HANDLE(vid, root, 4964 "\\_SB.PCI.AGP.VGA", /* 570 */ 4965 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4966 "\\_SB.PCI0.VID0", /* 770e */ 4967 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4968 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4969 "\\_SB.PCI0.AGP.VID", /* all others */ 4970 ); /* R30, R31 */ 4971 4972 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4973 4974 static int __init video_init(struct ibm_init_struct *iibm) 4975 { 4976 int ivga; 4977 4978 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4979 4980 TPACPI_ACPIHANDLE_INIT(vid); 4981 if (tpacpi_is_ibm()) 4982 TPACPI_ACPIHANDLE_INIT(vid2); 4983 4984 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4985 /* G41, assume IVGA doesn't change */ 4986 vid_handle = vid2_handle; 4987 4988 if (!vid_handle) 4989 /* video switching not supported on R30, R31 */ 4990 video_supported = TPACPI_VIDEO_NONE; 4991 else if (tpacpi_is_ibm() && 4992 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4993 /* 570 */ 4994 video_supported = TPACPI_VIDEO_570; 4995 else if (tpacpi_is_ibm() && 4996 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4997 /* 600e/x, 770e, 770x */ 4998 video_supported = TPACPI_VIDEO_770; 4999 else 5000 /* all others */ 5001 video_supported = TPACPI_VIDEO_NEW; 5002 5003 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 5004 str_supported(video_supported != TPACPI_VIDEO_NONE), 5005 video_supported); 5006 5007 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1; 5008 } 5009 5010 static void video_exit(void) 5011 { 5012 dbg_printk(TPACPI_DBG_EXIT, 5013 "restoring original video autoswitch mode\n"); 5014 if (video_autosw_set(video_orig_autosw)) 5015 pr_err("error while trying to restore original video autoswitch mode\n"); 5016 } 5017 5018 static int video_outputsw_get(void) 5019 { 5020 int status = 0; 5021 int i; 5022 5023 switch (video_supported) { 5024 case TPACPI_VIDEO_570: 5025 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 5026 TP_ACPI_VIDEO_570_PHSCMD)) 5027 return -EIO; 5028 status = i & TP_ACPI_VIDEO_570_PHSMASK; 5029 break; 5030 case TPACPI_VIDEO_770: 5031 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 5032 return -EIO; 5033 if (i) 5034 status |= TP_ACPI_VIDEO_S_LCD; 5035 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 5036 return -EIO; 5037 if (i) 5038 status |= TP_ACPI_VIDEO_S_CRT; 5039 break; 5040 case TPACPI_VIDEO_NEW: 5041 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 5042 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 5043 return -EIO; 5044 if (i) 5045 status |= TP_ACPI_VIDEO_S_CRT; 5046 5047 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 5048 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 5049 return -EIO; 5050 if (i) 5051 status |= TP_ACPI_VIDEO_S_LCD; 5052 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 5053 return -EIO; 5054 if (i) 5055 status |= TP_ACPI_VIDEO_S_DVI; 5056 break; 5057 default: 5058 return -ENOSYS; 5059 } 5060 5061 return status; 5062 } 5063 5064 static int video_outputsw_set(int status) 5065 { 5066 int autosw; 5067 int res = 0; 5068 5069 switch (video_supported) { 5070 case TPACPI_VIDEO_570: 5071 res = acpi_evalf(NULL, NULL, 5072 "\\_SB.PHS2", "vdd", 5073 TP_ACPI_VIDEO_570_PHS2CMD, 5074 status | TP_ACPI_VIDEO_570_PHS2SET); 5075 break; 5076 case TPACPI_VIDEO_770: 5077 autosw = video_autosw_get(); 5078 if (autosw < 0) 5079 return autosw; 5080 5081 res = video_autosw_set(1); 5082 if (res) 5083 return res; 5084 res = acpi_evalf(vid_handle, NULL, 5085 "ASWT", "vdd", status * 0x100, 0); 5086 if (!autosw && video_autosw_set(autosw)) { 5087 pr_err("video auto-switch left enabled due to error\n"); 5088 return -EIO; 5089 } 5090 break; 5091 case TPACPI_VIDEO_NEW: 5092 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 5093 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 5094 break; 5095 default: 5096 return -ENOSYS; 5097 } 5098 5099 return (res) ? 0 : -EIO; 5100 } 5101 5102 static int video_autosw_get(void) 5103 { 5104 int autosw = 0; 5105 5106 switch (video_supported) { 5107 case TPACPI_VIDEO_570: 5108 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 5109 return -EIO; 5110 break; 5111 case TPACPI_VIDEO_770: 5112 case TPACPI_VIDEO_NEW: 5113 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 5114 return -EIO; 5115 break; 5116 default: 5117 return -ENOSYS; 5118 } 5119 5120 return autosw & 1; 5121 } 5122 5123 static int video_autosw_set(int enable) 5124 { 5125 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 5126 return -EIO; 5127 return 0; 5128 } 5129 5130 static int video_outputsw_cycle(void) 5131 { 5132 int autosw = video_autosw_get(); 5133 int res; 5134 5135 if (autosw < 0) 5136 return autosw; 5137 5138 switch (video_supported) { 5139 case TPACPI_VIDEO_570: 5140 res = video_autosw_set(1); 5141 if (res) 5142 return res; 5143 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5144 break; 5145 case TPACPI_VIDEO_770: 5146 case TPACPI_VIDEO_NEW: 5147 res = video_autosw_set(1); 5148 if (res) 5149 return res; 5150 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5151 break; 5152 default: 5153 return -ENOSYS; 5154 } 5155 if (!autosw && video_autosw_set(autosw)) { 5156 pr_err("video auto-switch left enabled due to error\n"); 5157 return -EIO; 5158 } 5159 5160 return (res) ? 0 : -EIO; 5161 } 5162 5163 static int video_expand_toggle(void) 5164 { 5165 switch (video_supported) { 5166 case TPACPI_VIDEO_570: 5167 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5168 0 : -EIO; 5169 case TPACPI_VIDEO_770: 5170 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5171 0 : -EIO; 5172 case TPACPI_VIDEO_NEW: 5173 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5174 0 : -EIO; 5175 default: 5176 return -ENOSYS; 5177 } 5178 /* not reached */ 5179 } 5180 5181 static int video_read(struct seq_file *m) 5182 { 5183 int status, autosw; 5184 5185 if (video_supported == TPACPI_VIDEO_NONE) { 5186 seq_printf(m, "status:\t\tnot supported\n"); 5187 return 0; 5188 } 5189 5190 /* Even reads can crash X.org, so... */ 5191 if (!capable(CAP_SYS_ADMIN)) 5192 return -EPERM; 5193 5194 status = video_outputsw_get(); 5195 if (status < 0) 5196 return status; 5197 5198 autosw = video_autosw_get(); 5199 if (autosw < 0) 5200 return autosw; 5201 5202 seq_printf(m, "status:\t\tsupported\n"); 5203 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); 5204 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); 5205 if (video_supported == TPACPI_VIDEO_NEW) 5206 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); 5207 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); 5208 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5209 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5210 if (video_supported == TPACPI_VIDEO_NEW) 5211 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5212 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5213 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5214 5215 return 0; 5216 } 5217 5218 static int video_write(char *buf) 5219 { 5220 char *cmd; 5221 int enable, disable, status; 5222 int res; 5223 5224 if (video_supported == TPACPI_VIDEO_NONE) 5225 return -ENODEV; 5226 5227 /* Even reads can crash X.org, let alone writes... */ 5228 if (!capable(CAP_SYS_ADMIN)) 5229 return -EPERM; 5230 5231 enable = 0; 5232 disable = 0; 5233 5234 while ((cmd = strsep(&buf, ","))) { 5235 if (strlencmp(cmd, "lcd_enable") == 0) { 5236 enable |= TP_ACPI_VIDEO_S_LCD; 5237 } else if (strlencmp(cmd, "lcd_disable") == 0) { 5238 disable |= TP_ACPI_VIDEO_S_LCD; 5239 } else if (strlencmp(cmd, "crt_enable") == 0) { 5240 enable |= TP_ACPI_VIDEO_S_CRT; 5241 } else if (strlencmp(cmd, "crt_disable") == 0) { 5242 disable |= TP_ACPI_VIDEO_S_CRT; 5243 } else if (video_supported == TPACPI_VIDEO_NEW && 5244 strlencmp(cmd, "dvi_enable") == 0) { 5245 enable |= TP_ACPI_VIDEO_S_DVI; 5246 } else if (video_supported == TPACPI_VIDEO_NEW && 5247 strlencmp(cmd, "dvi_disable") == 0) { 5248 disable |= TP_ACPI_VIDEO_S_DVI; 5249 } else if (strlencmp(cmd, "auto_enable") == 0) { 5250 res = video_autosw_set(1); 5251 if (res) 5252 return res; 5253 } else if (strlencmp(cmd, "auto_disable") == 0) { 5254 res = video_autosw_set(0); 5255 if (res) 5256 return res; 5257 } else if (strlencmp(cmd, "video_switch") == 0) { 5258 res = video_outputsw_cycle(); 5259 if (res) 5260 return res; 5261 } else if (strlencmp(cmd, "expand_toggle") == 0) { 5262 res = video_expand_toggle(); 5263 if (res) 5264 return res; 5265 } else 5266 return -EINVAL; 5267 } 5268 5269 if (enable || disable) { 5270 status = video_outputsw_get(); 5271 if (status < 0) 5272 return status; 5273 res = video_outputsw_set((status & ~disable) | enable); 5274 if (res) 5275 return res; 5276 } 5277 5278 return 0; 5279 } 5280 5281 static struct ibm_struct video_driver_data = { 5282 .name = "video", 5283 .read = video_read, 5284 .write = video_write, 5285 .exit = video_exit, 5286 }; 5287 5288 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5289 5290 /************************************************************************* 5291 * Keyboard backlight subdriver 5292 */ 5293 5294 static enum led_brightness kbdlight_brightness; 5295 static DEFINE_MUTEX(kbdlight_mutex); 5296 5297 static int kbdlight_set_level(int level) 5298 { 5299 int ret = 0; 5300 5301 if (!hkey_handle) 5302 return -ENXIO; 5303 5304 mutex_lock(&kbdlight_mutex); 5305 5306 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5307 ret = -EIO; 5308 else 5309 kbdlight_brightness = level; 5310 5311 mutex_unlock(&kbdlight_mutex); 5312 5313 return ret; 5314 } 5315 5316 static int kbdlight_get_level(void) 5317 { 5318 int status = 0; 5319 5320 if (!hkey_handle) 5321 return -ENXIO; 5322 5323 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5324 return -EIO; 5325 5326 if (status < 0) 5327 return status; 5328 5329 return status & 0x3; 5330 } 5331 5332 static bool kbdlight_is_supported(void) 5333 { 5334 int status = 0; 5335 5336 if (!hkey_handle) 5337 return false; 5338 5339 if (!acpi_has_method(hkey_handle, "MLCG")) { 5340 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5341 return false; 5342 } 5343 5344 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5345 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5346 return false; 5347 } 5348 5349 if (status < 0) { 5350 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5351 return false; 5352 } 5353 5354 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5355 /* 5356 * Guessed test for keyboard backlight: 5357 * 5358 * Machines with backlight keyboard return: 5359 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5360 * b110100010010000000XX - ThinkPad x230 5361 * b010100000010000000XX - ThinkPad x240 5362 * b010100000010000000XX - ThinkPad W541 5363 * (XX is current backlight level) 5364 * 5365 * Machines without backlight keyboard return: 5366 * b10100001000000000000 - ThinkPad x230 5367 * b10110001000000000000 - ThinkPad E430 5368 * b00000000000000000000 - ThinkPad E450 5369 * 5370 * Candidate BITs for detection test (XOR): 5371 * b01000000001000000000 5372 * ^ 5373 */ 5374 return status & BIT(9); 5375 } 5376 5377 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5378 enum led_brightness brightness) 5379 { 5380 return kbdlight_set_level(brightness); 5381 } 5382 5383 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5384 { 5385 int level; 5386 5387 level = kbdlight_get_level(); 5388 if (level < 0) 5389 return 0; 5390 5391 return level; 5392 } 5393 5394 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5395 .led_classdev = { 5396 .name = "tpacpi::kbd_backlight", 5397 .max_brightness = 2, 5398 .flags = LED_BRIGHT_HW_CHANGED, 5399 .brightness_set_blocking = &kbdlight_sysfs_set, 5400 .brightness_get = &kbdlight_sysfs_get, 5401 } 5402 }; 5403 5404 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5405 { 5406 int rc; 5407 5408 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5409 5410 TPACPI_ACPIHANDLE_INIT(hkey); 5411 5412 if (!kbdlight_is_supported()) { 5413 tp_features.kbdlight = 0; 5414 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5415 return 1; 5416 } 5417 5418 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5419 tp_features.kbdlight = 1; 5420 5421 rc = led_classdev_register(&tpacpi_pdev->dev, 5422 &tpacpi_led_kbdlight.led_classdev); 5423 if (rc < 0) { 5424 tp_features.kbdlight = 0; 5425 return rc; 5426 } 5427 5428 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5429 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5430 return 0; 5431 } 5432 5433 static void kbdlight_exit(void) 5434 { 5435 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5436 } 5437 5438 static int kbdlight_set_level_and_update(int level) 5439 { 5440 int ret; 5441 struct led_classdev *led_cdev; 5442 5443 ret = kbdlight_set_level(level); 5444 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5445 5446 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5447 led_cdev->brightness = level; 5448 5449 return ret; 5450 } 5451 5452 static int kbdlight_read(struct seq_file *m) 5453 { 5454 int level; 5455 5456 if (!tp_features.kbdlight) { 5457 seq_printf(m, "status:\t\tnot supported\n"); 5458 } else { 5459 level = kbdlight_get_level(); 5460 if (level < 0) 5461 seq_printf(m, "status:\t\terror %d\n", level); 5462 else 5463 seq_printf(m, "status:\t\t%d\n", level); 5464 seq_printf(m, "commands:\t0, 1, 2\n"); 5465 } 5466 5467 return 0; 5468 } 5469 5470 static int kbdlight_write(char *buf) 5471 { 5472 char *cmd; 5473 int res, level = -EINVAL; 5474 5475 if (!tp_features.kbdlight) 5476 return -ENODEV; 5477 5478 while ((cmd = strsep(&buf, ","))) { 5479 res = kstrtoint(cmd, 10, &level); 5480 if (res < 0) 5481 return res; 5482 } 5483 5484 if (level >= 3 || level < 0) 5485 return -EINVAL; 5486 5487 return kbdlight_set_level_and_update(level); 5488 } 5489 5490 static void kbdlight_suspend(void) 5491 { 5492 struct led_classdev *led_cdev; 5493 5494 if (!tp_features.kbdlight) 5495 return; 5496 5497 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5498 led_update_brightness(led_cdev); 5499 led_classdev_suspend(led_cdev); 5500 } 5501 5502 static void kbdlight_resume(void) 5503 { 5504 if (!tp_features.kbdlight) 5505 return; 5506 5507 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5508 } 5509 5510 static struct ibm_struct kbdlight_driver_data = { 5511 .name = "kbdlight", 5512 .read = kbdlight_read, 5513 .write = kbdlight_write, 5514 .suspend = kbdlight_suspend, 5515 .resume = kbdlight_resume, 5516 .exit = kbdlight_exit, 5517 }; 5518 5519 /************************************************************************* 5520 * Light (thinklight) subdriver 5521 */ 5522 5523 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5524 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5525 5526 static int light_get_status(void) 5527 { 5528 int status = 0; 5529 5530 if (tp_features.light_status) { 5531 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5532 return -EIO; 5533 return (!!status); 5534 } 5535 5536 return -ENXIO; 5537 } 5538 5539 static int light_set_status(int status) 5540 { 5541 int rc; 5542 5543 if (tp_features.light) { 5544 if (cmos_handle) { 5545 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5546 (status) ? 5547 TP_CMOS_THINKLIGHT_ON : 5548 TP_CMOS_THINKLIGHT_OFF); 5549 } else { 5550 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5551 (status) ? 1 : 0); 5552 } 5553 return (rc) ? 0 : -EIO; 5554 } 5555 5556 return -ENXIO; 5557 } 5558 5559 static int light_sysfs_set(struct led_classdev *led_cdev, 5560 enum led_brightness brightness) 5561 { 5562 return light_set_status((brightness != LED_OFF) ? 5563 TPACPI_LED_ON : TPACPI_LED_OFF); 5564 } 5565 5566 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5567 { 5568 return (light_get_status() == 1) ? LED_FULL : LED_OFF; 5569 } 5570 5571 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5572 .led_classdev = { 5573 .name = "tpacpi::thinklight", 5574 .brightness_set_blocking = &light_sysfs_set, 5575 .brightness_get = &light_sysfs_get, 5576 } 5577 }; 5578 5579 static int __init light_init(struct ibm_init_struct *iibm) 5580 { 5581 int rc; 5582 5583 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5584 5585 if (tpacpi_is_ibm()) { 5586 TPACPI_ACPIHANDLE_INIT(ledb); 5587 TPACPI_ACPIHANDLE_INIT(lght); 5588 } 5589 TPACPI_ACPIHANDLE_INIT(cmos); 5590 5591 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5592 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5593 5594 if (tp_features.light) 5595 /* light status not supported on 5596 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5597 tp_features.light_status = 5598 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5599 5600 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5601 str_supported(tp_features.light), 5602 str_supported(tp_features.light_status)); 5603 5604 if (!tp_features.light) 5605 return 1; 5606 5607 rc = led_classdev_register(&tpacpi_pdev->dev, 5608 &tpacpi_led_thinklight.led_classdev); 5609 5610 if (rc < 0) { 5611 tp_features.light = 0; 5612 tp_features.light_status = 0; 5613 } else { 5614 rc = 0; 5615 } 5616 5617 return rc; 5618 } 5619 5620 static void light_exit(void) 5621 { 5622 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5623 } 5624 5625 static int light_read(struct seq_file *m) 5626 { 5627 int status; 5628 5629 if (!tp_features.light) { 5630 seq_printf(m, "status:\t\tnot supported\n"); 5631 } else if (!tp_features.light_status) { 5632 seq_printf(m, "status:\t\tunknown\n"); 5633 seq_printf(m, "commands:\ton, off\n"); 5634 } else { 5635 status = light_get_status(); 5636 if (status < 0) 5637 return status; 5638 seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); 5639 seq_printf(m, "commands:\ton, off\n"); 5640 } 5641 5642 return 0; 5643 } 5644 5645 static int light_write(char *buf) 5646 { 5647 char *cmd; 5648 int newstatus = 0; 5649 5650 if (!tp_features.light) 5651 return -ENODEV; 5652 5653 while ((cmd = strsep(&buf, ","))) { 5654 if (strlencmp(cmd, "on") == 0) { 5655 newstatus = 1; 5656 } else if (strlencmp(cmd, "off") == 0) { 5657 newstatus = 0; 5658 } else 5659 return -EINVAL; 5660 } 5661 5662 return light_set_status(newstatus); 5663 } 5664 5665 static struct ibm_struct light_driver_data = { 5666 .name = "light", 5667 .read = light_read, 5668 .write = light_write, 5669 .exit = light_exit, 5670 }; 5671 5672 /************************************************************************* 5673 * CMOS subdriver 5674 */ 5675 5676 /* sysfs cmos_command -------------------------------------------------- */ 5677 static ssize_t cmos_command_store(struct device *dev, 5678 struct device_attribute *attr, 5679 const char *buf, size_t count) 5680 { 5681 unsigned long cmos_cmd; 5682 int res; 5683 5684 if (parse_strtoul(buf, 21, &cmos_cmd)) 5685 return -EINVAL; 5686 5687 res = issue_thinkpad_cmos_command(cmos_cmd); 5688 return (res) ? res : count; 5689 } 5690 5691 static DEVICE_ATTR_WO(cmos_command); 5692 5693 /* --------------------------------------------------------------------- */ 5694 5695 static int __init cmos_init(struct ibm_init_struct *iibm) 5696 { 5697 int res; 5698 5699 vdbg_printk(TPACPI_DBG_INIT, 5700 "initializing cmos commands subdriver\n"); 5701 5702 TPACPI_ACPIHANDLE_INIT(cmos); 5703 5704 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5705 str_supported(cmos_handle != NULL)); 5706 5707 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5708 if (res) 5709 return res; 5710 5711 return (cmos_handle) ? 0 : 1; 5712 } 5713 5714 static void cmos_exit(void) 5715 { 5716 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5717 } 5718 5719 static int cmos_read(struct seq_file *m) 5720 { 5721 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5722 R30, R31, T20-22, X20-21 */ 5723 if (!cmos_handle) 5724 seq_printf(m, "status:\t\tnot supported\n"); 5725 else { 5726 seq_printf(m, "status:\t\tsupported\n"); 5727 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5728 } 5729 5730 return 0; 5731 } 5732 5733 static int cmos_write(char *buf) 5734 { 5735 char *cmd; 5736 int cmos_cmd, res; 5737 5738 while ((cmd = strsep(&buf, ","))) { 5739 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5740 cmos_cmd >= 0 && cmos_cmd <= 21) { 5741 /* cmos_cmd set */ 5742 } else 5743 return -EINVAL; 5744 5745 res = issue_thinkpad_cmos_command(cmos_cmd); 5746 if (res) 5747 return res; 5748 } 5749 5750 return 0; 5751 } 5752 5753 static struct ibm_struct cmos_driver_data = { 5754 .name = "cmos", 5755 .read = cmos_read, 5756 .write = cmos_write, 5757 .exit = cmos_exit, 5758 }; 5759 5760 /************************************************************************* 5761 * LED subdriver 5762 */ 5763 5764 enum led_access_mode { 5765 TPACPI_LED_NONE = 0, 5766 TPACPI_LED_570, /* 570 */ 5767 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5768 TPACPI_LED_NEW, /* all others */ 5769 }; 5770 5771 enum { /* For TPACPI_LED_OLD */ 5772 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5773 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5774 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5775 }; 5776 5777 static enum led_access_mode led_supported; 5778 5779 static acpi_handle led_handle; 5780 5781 #define TPACPI_LED_NUMLEDS 16 5782 static struct tpacpi_led_classdev *tpacpi_leds; 5783 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5784 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5785 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5786 "tpacpi::power", 5787 "tpacpi:orange:batt", 5788 "tpacpi:green:batt", 5789 "tpacpi::dock_active", 5790 "tpacpi::bay_active", 5791 "tpacpi::dock_batt", 5792 "tpacpi::unknown_led", 5793 "tpacpi::standby", 5794 "tpacpi::dock_status1", 5795 "tpacpi::dock_status2", 5796 "tpacpi::unknown_led2", 5797 "tpacpi::unknown_led3", 5798 "tpacpi::thinkvantage", 5799 }; 5800 #define TPACPI_SAFE_LEDS 0x1081U 5801 5802 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5803 { 5804 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5805 return false; 5806 #else 5807 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5808 #endif 5809 } 5810 5811 static int led_get_status(const unsigned int led) 5812 { 5813 int status; 5814 enum led_status_t led_s; 5815 5816 switch (led_supported) { 5817 case TPACPI_LED_570: 5818 if (!acpi_evalf(ec_handle, 5819 &status, "GLED", "dd", 1 << led)) 5820 return -EIO; 5821 led_s = (status == 0) ? 5822 TPACPI_LED_OFF : 5823 ((status == 1) ? 5824 TPACPI_LED_ON : 5825 TPACPI_LED_BLINK); 5826 tpacpi_led_state_cache[led] = led_s; 5827 return led_s; 5828 default: 5829 return -ENXIO; 5830 } 5831 5832 /* not reached */ 5833 } 5834 5835 static int led_set_status(const unsigned int led, 5836 const enum led_status_t ledstatus) 5837 { 5838 /* off, on, blink. Index is led_status_t */ 5839 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5840 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5841 5842 int rc = 0; 5843 5844 switch (led_supported) { 5845 case TPACPI_LED_570: 5846 /* 570 */ 5847 if (unlikely(led > 7)) 5848 return -EINVAL; 5849 if (unlikely(tpacpi_is_led_restricted(led))) 5850 return -EPERM; 5851 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5852 (1 << led), led_sled_arg1[ledstatus])) 5853 return -EIO; 5854 break; 5855 case TPACPI_LED_OLD: 5856 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5857 if (unlikely(led > 7)) 5858 return -EINVAL; 5859 if (unlikely(tpacpi_is_led_restricted(led))) 5860 return -EPERM; 5861 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5862 if (rc >= 0) 5863 rc = ec_write(TPACPI_LED_EC_HLBL, 5864 (ledstatus == TPACPI_LED_BLINK) << led); 5865 if (rc >= 0) 5866 rc = ec_write(TPACPI_LED_EC_HLCL, 5867 (ledstatus != TPACPI_LED_OFF) << led); 5868 break; 5869 case TPACPI_LED_NEW: 5870 /* all others */ 5871 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5872 return -EINVAL; 5873 if (unlikely(tpacpi_is_led_restricted(led))) 5874 return -EPERM; 5875 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5876 led, led_led_arg1[ledstatus])) 5877 return -EIO; 5878 break; 5879 default: 5880 return -ENXIO; 5881 } 5882 5883 if (!rc) 5884 tpacpi_led_state_cache[led] = ledstatus; 5885 5886 return rc; 5887 } 5888 5889 static int led_sysfs_set(struct led_classdev *led_cdev, 5890 enum led_brightness brightness) 5891 { 5892 struct tpacpi_led_classdev *data = container_of(led_cdev, 5893 struct tpacpi_led_classdev, led_classdev); 5894 enum led_status_t new_state; 5895 5896 if (brightness == LED_OFF) 5897 new_state = TPACPI_LED_OFF; 5898 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5899 new_state = TPACPI_LED_ON; 5900 else 5901 new_state = TPACPI_LED_BLINK; 5902 5903 return led_set_status(data->led, new_state); 5904 } 5905 5906 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5907 unsigned long *delay_on, unsigned long *delay_off) 5908 { 5909 struct tpacpi_led_classdev *data = container_of(led_cdev, 5910 struct tpacpi_led_classdev, led_classdev); 5911 5912 /* Can we choose the flash rate? */ 5913 if (*delay_on == 0 && *delay_off == 0) { 5914 /* yes. set them to the hardware blink rate (1 Hz) */ 5915 *delay_on = 500; /* ms */ 5916 *delay_off = 500; /* ms */ 5917 } else if ((*delay_on != 500) || (*delay_off != 500)) 5918 return -EINVAL; 5919 5920 return led_set_status(data->led, TPACPI_LED_BLINK); 5921 } 5922 5923 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5924 { 5925 int rc; 5926 5927 struct tpacpi_led_classdev *data = container_of(led_cdev, 5928 struct tpacpi_led_classdev, led_classdev); 5929 5930 rc = led_get_status(data->led); 5931 5932 if (rc == TPACPI_LED_OFF || rc < 0) 5933 rc = LED_OFF; /* no error handling in led class :( */ 5934 else 5935 rc = LED_FULL; 5936 5937 return rc; 5938 } 5939 5940 static void led_exit(void) 5941 { 5942 unsigned int i; 5943 5944 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5945 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5946 5947 kfree(tpacpi_leds); 5948 } 5949 5950 static int __init tpacpi_init_led(unsigned int led) 5951 { 5952 /* LEDs with no name don't get registered */ 5953 if (!tpacpi_led_names[led]) 5954 return 0; 5955 5956 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5957 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5958 if (led_supported == TPACPI_LED_570) 5959 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5960 5961 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5962 tpacpi_leds[led].led = led; 5963 5964 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5965 } 5966 5967 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5968 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5969 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5970 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5971 5972 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5973 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5974 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5975 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5976 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5977 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5978 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5979 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5980 5981 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5982 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5983 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5984 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5985 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5986 5987 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5988 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5989 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5990 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5991 5992 /* (1) - may have excess leds enabled on MSB */ 5993 5994 /* Defaults (order matters, keep last, don't reorder!) */ 5995 { /* Lenovo */ 5996 .vendor = PCI_VENDOR_ID_LENOVO, 5997 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5998 .quirks = 0x1fffU, 5999 }, 6000 { /* IBM ThinkPads with no EC version string */ 6001 .vendor = PCI_VENDOR_ID_IBM, 6002 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 6003 .quirks = 0x00ffU, 6004 }, 6005 { /* IBM ThinkPads with EC version string */ 6006 .vendor = PCI_VENDOR_ID_IBM, 6007 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 6008 .quirks = 0x00bfU, 6009 }, 6010 }; 6011 6012 static enum led_access_mode __init led_init_detect_mode(void) 6013 { 6014 acpi_status status; 6015 6016 if (tpacpi_is_ibm()) { 6017 /* 570 */ 6018 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 6019 if (ACPI_SUCCESS(status)) 6020 return TPACPI_LED_570; 6021 6022 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 6023 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 6024 if (ACPI_SUCCESS(status)) 6025 return TPACPI_LED_OLD; 6026 } 6027 6028 /* most others */ 6029 status = acpi_get_handle(ec_handle, "LED", &led_handle); 6030 if (ACPI_SUCCESS(status)) 6031 return TPACPI_LED_NEW; 6032 6033 /* R30, R31, and unknown firmwares */ 6034 led_handle = NULL; 6035 return TPACPI_LED_NONE; 6036 } 6037 6038 static int __init led_init(struct ibm_init_struct *iibm) 6039 { 6040 unsigned int i; 6041 int rc; 6042 unsigned long useful_leds; 6043 6044 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 6045 6046 led_supported = led_init_detect_mode(); 6047 6048 if (led_supported != TPACPI_LED_NONE) { 6049 useful_leds = tpacpi_check_quirks(led_useful_qtable, 6050 ARRAY_SIZE(led_useful_qtable)); 6051 6052 if (!useful_leds) { 6053 led_handle = NULL; 6054 led_supported = TPACPI_LED_NONE; 6055 } 6056 } 6057 6058 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 6059 str_supported(led_supported), led_supported); 6060 6061 if (led_supported == TPACPI_LED_NONE) 6062 return 1; 6063 6064 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), 6065 GFP_KERNEL); 6066 if (!tpacpi_leds) { 6067 pr_err("Out of memory for LED data\n"); 6068 return -ENOMEM; 6069 } 6070 6071 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 6072 tpacpi_leds[i].led = -1; 6073 6074 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 6075 rc = tpacpi_init_led(i); 6076 if (rc < 0) { 6077 led_exit(); 6078 return rc; 6079 } 6080 } 6081 } 6082 6083 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 6084 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 6085 #endif 6086 return 0; 6087 } 6088 6089 #define str_led_status(s) \ 6090 ((s) == TPACPI_LED_OFF ? "off" : \ 6091 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 6092 6093 static int led_read(struct seq_file *m) 6094 { 6095 if (!led_supported) { 6096 seq_printf(m, "status:\t\tnot supported\n"); 6097 return 0; 6098 } 6099 seq_printf(m, "status:\t\tsupported\n"); 6100 6101 if (led_supported == TPACPI_LED_570) { 6102 /* 570 */ 6103 int i, status; 6104 for (i = 0; i < 8; i++) { 6105 status = led_get_status(i); 6106 if (status < 0) 6107 return -EIO; 6108 seq_printf(m, "%d:\t\t%s\n", 6109 i, str_led_status(status)); 6110 } 6111 } 6112 6113 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 6114 6115 return 0; 6116 } 6117 6118 static int led_write(char *buf) 6119 { 6120 char *cmd; 6121 int led, rc; 6122 enum led_status_t s; 6123 6124 if (!led_supported) 6125 return -ENODEV; 6126 6127 while ((cmd = strsep(&buf, ","))) { 6128 if (sscanf(cmd, "%d", &led) != 1) 6129 return -EINVAL; 6130 6131 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 6132 return -ENODEV; 6133 6134 if (tpacpi_leds[led].led < 0) 6135 return -ENODEV; 6136 6137 if (strstr(cmd, "off")) { 6138 s = TPACPI_LED_OFF; 6139 } else if (strstr(cmd, "on")) { 6140 s = TPACPI_LED_ON; 6141 } else if (strstr(cmd, "blink")) { 6142 s = TPACPI_LED_BLINK; 6143 } else { 6144 return -EINVAL; 6145 } 6146 6147 rc = led_set_status(led, s); 6148 if (rc < 0) 6149 return rc; 6150 } 6151 6152 return 0; 6153 } 6154 6155 static struct ibm_struct led_driver_data = { 6156 .name = "led", 6157 .read = led_read, 6158 .write = led_write, 6159 .exit = led_exit, 6160 }; 6161 6162 /************************************************************************* 6163 * Beep subdriver 6164 */ 6165 6166 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6167 6168 #define TPACPI_BEEP_Q1 0x0001 6169 6170 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6171 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6172 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6173 }; 6174 6175 static int __init beep_init(struct ibm_init_struct *iibm) 6176 { 6177 unsigned long quirks; 6178 6179 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6180 6181 TPACPI_ACPIHANDLE_INIT(beep); 6182 6183 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6184 str_supported(beep_handle != NULL)); 6185 6186 quirks = tpacpi_check_quirks(beep_quirk_table, 6187 ARRAY_SIZE(beep_quirk_table)); 6188 6189 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6190 6191 return (beep_handle) ? 0 : 1; 6192 } 6193 6194 static int beep_read(struct seq_file *m) 6195 { 6196 if (!beep_handle) 6197 seq_printf(m, "status:\t\tnot supported\n"); 6198 else { 6199 seq_printf(m, "status:\t\tsupported\n"); 6200 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6201 } 6202 6203 return 0; 6204 } 6205 6206 static int beep_write(char *buf) 6207 { 6208 char *cmd; 6209 int beep_cmd; 6210 6211 if (!beep_handle) 6212 return -ENODEV; 6213 6214 while ((cmd = strsep(&buf, ","))) { 6215 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6216 beep_cmd >= 0 && beep_cmd <= 17) { 6217 /* beep_cmd set */ 6218 } else 6219 return -EINVAL; 6220 if (tp_features.beep_needs_two_args) { 6221 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6222 beep_cmd, 0)) 6223 return -EIO; 6224 } else { 6225 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6226 beep_cmd)) 6227 return -EIO; 6228 } 6229 } 6230 6231 return 0; 6232 } 6233 6234 static struct ibm_struct beep_driver_data = { 6235 .name = "beep", 6236 .read = beep_read, 6237 .write = beep_write, 6238 }; 6239 6240 /************************************************************************* 6241 * Thermal subdriver 6242 */ 6243 6244 enum thermal_access_mode { 6245 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6246 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6247 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6248 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6249 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6250 }; 6251 6252 enum { /* TPACPI_THERMAL_TPEC_* */ 6253 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6254 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6255 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6256 6257 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6258 }; 6259 6260 6261 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6262 struct ibm_thermal_sensors_struct { 6263 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6264 }; 6265 6266 static enum thermal_access_mode thermal_read_mode; 6267 6268 /* idx is zero-based */ 6269 static int thermal_get_sensor(int idx, s32 *value) 6270 { 6271 int t; 6272 s8 tmp; 6273 char tmpi[5]; 6274 6275 t = TP_EC_THERMAL_TMP0; 6276 6277 switch (thermal_read_mode) { 6278 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6279 case TPACPI_THERMAL_TPEC_16: 6280 if (idx >= 8 && idx <= 15) { 6281 t = TP_EC_THERMAL_TMP8; 6282 idx -= 8; 6283 } 6284 #endif 6285 fallthrough; 6286 case TPACPI_THERMAL_TPEC_8: 6287 if (idx <= 7) { 6288 if (!acpi_ec_read(t + idx, &tmp)) 6289 return -EIO; 6290 *value = tmp * 1000; 6291 return 0; 6292 } 6293 break; 6294 6295 case TPACPI_THERMAL_ACPI_UPDT: 6296 if (idx <= 7) { 6297 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6298 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6299 return -EIO; 6300 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6301 return -EIO; 6302 *value = (t - 2732) * 100; 6303 return 0; 6304 } 6305 break; 6306 6307 case TPACPI_THERMAL_ACPI_TMP07: 6308 if (idx <= 7) { 6309 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6310 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6311 return -EIO; 6312 if (t > 127 || t < -127) 6313 t = TP_EC_THERMAL_TMP_NA; 6314 *value = t * 1000; 6315 return 0; 6316 } 6317 break; 6318 6319 case TPACPI_THERMAL_NONE: 6320 default: 6321 return -ENOSYS; 6322 } 6323 6324 return -EINVAL; 6325 } 6326 6327 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6328 { 6329 int res, i; 6330 int n; 6331 6332 n = 8; 6333 i = 0; 6334 6335 if (!s) 6336 return -EINVAL; 6337 6338 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6339 n = 16; 6340 6341 for (i = 0 ; i < n; i++) { 6342 res = thermal_get_sensor(i, &s->temp[i]); 6343 if (res) 6344 return res; 6345 } 6346 6347 return n; 6348 } 6349 6350 static void thermal_dump_all_sensors(void) 6351 { 6352 int n, i; 6353 struct ibm_thermal_sensors_struct t; 6354 6355 n = thermal_get_sensors(&t); 6356 if (n <= 0) 6357 return; 6358 6359 pr_notice("temperatures (Celsius):"); 6360 6361 for (i = 0; i < n; i++) { 6362 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6363 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6364 else 6365 pr_cont(" N/A"); 6366 } 6367 6368 pr_cont("\n"); 6369 } 6370 6371 /* sysfs temp##_input -------------------------------------------------- */ 6372 6373 static ssize_t thermal_temp_input_show(struct device *dev, 6374 struct device_attribute *attr, 6375 char *buf) 6376 { 6377 struct sensor_device_attribute *sensor_attr = 6378 to_sensor_dev_attr(attr); 6379 int idx = sensor_attr->index; 6380 s32 value; 6381 int res; 6382 6383 res = thermal_get_sensor(idx, &value); 6384 if (res) 6385 return res; 6386 if (value == TPACPI_THERMAL_SENSOR_NA) 6387 return -ENXIO; 6388 6389 return snprintf(buf, PAGE_SIZE, "%d\n", value); 6390 } 6391 6392 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6393 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6394 thermal_temp_input_show, NULL, _idxB) 6395 6396 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6397 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6398 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6399 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6400 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6401 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6402 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6403 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6404 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6405 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6406 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6407 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6408 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6409 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6410 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6411 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6412 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6413 }; 6414 6415 #define THERMAL_ATTRS(X) \ 6416 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6417 6418 static struct attribute *thermal_temp_input_attr[] = { 6419 THERMAL_ATTRS(8), 6420 THERMAL_ATTRS(9), 6421 THERMAL_ATTRS(10), 6422 THERMAL_ATTRS(11), 6423 THERMAL_ATTRS(12), 6424 THERMAL_ATTRS(13), 6425 THERMAL_ATTRS(14), 6426 THERMAL_ATTRS(15), 6427 THERMAL_ATTRS(0), 6428 THERMAL_ATTRS(1), 6429 THERMAL_ATTRS(2), 6430 THERMAL_ATTRS(3), 6431 THERMAL_ATTRS(4), 6432 THERMAL_ATTRS(5), 6433 THERMAL_ATTRS(6), 6434 THERMAL_ATTRS(7), 6435 NULL 6436 }; 6437 6438 static const struct attribute_group thermal_temp_input16_group = { 6439 .attrs = thermal_temp_input_attr 6440 }; 6441 6442 static const struct attribute_group thermal_temp_input8_group = { 6443 .attrs = &thermal_temp_input_attr[8] 6444 }; 6445 6446 #undef THERMAL_SENSOR_ATTR_TEMP 6447 #undef THERMAL_ATTRS 6448 6449 /* --------------------------------------------------------------------- */ 6450 6451 static int __init thermal_init(struct ibm_init_struct *iibm) 6452 { 6453 u8 t, ta1, ta2; 6454 int i; 6455 int acpi_tmp7; 6456 int res; 6457 6458 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6459 6460 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6461 6462 if (thinkpad_id.ec_model) { 6463 /* 6464 * Direct EC access mode: sensors at registers 6465 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6466 * non-implemented, thermal sensors return 0x80 when 6467 * not available 6468 */ 6469 6470 ta1 = ta2 = 0; 6471 for (i = 0; i < 8; i++) { 6472 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6473 ta1 |= t; 6474 } else { 6475 ta1 = 0; 6476 break; 6477 } 6478 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6479 ta2 |= t; 6480 } else { 6481 ta1 = 0; 6482 break; 6483 } 6484 } 6485 if (ta1 == 0) { 6486 /* This is sheer paranoia, but we handle it anyway */ 6487 if (acpi_tmp7) { 6488 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6489 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6490 } else { 6491 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6492 thermal_read_mode = TPACPI_THERMAL_NONE; 6493 } 6494 } else { 6495 thermal_read_mode = 6496 (ta2 != 0) ? 6497 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6498 } 6499 } else if (acpi_tmp7) { 6500 if (tpacpi_is_ibm() && 6501 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6502 /* 600e/x, 770e, 770x */ 6503 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6504 } else { 6505 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6506 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6507 } 6508 } else { 6509 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6510 thermal_read_mode = TPACPI_THERMAL_NONE; 6511 } 6512 6513 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6514 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6515 thermal_read_mode); 6516 6517 switch (thermal_read_mode) { 6518 case TPACPI_THERMAL_TPEC_16: 6519 res = sysfs_create_group(&tpacpi_hwmon->kobj, 6520 &thermal_temp_input16_group); 6521 if (res) 6522 return res; 6523 break; 6524 case TPACPI_THERMAL_TPEC_8: 6525 case TPACPI_THERMAL_ACPI_TMP07: 6526 case TPACPI_THERMAL_ACPI_UPDT: 6527 res = sysfs_create_group(&tpacpi_hwmon->kobj, 6528 &thermal_temp_input8_group); 6529 if (res) 6530 return res; 6531 break; 6532 case TPACPI_THERMAL_NONE: 6533 default: 6534 return 1; 6535 } 6536 6537 return 0; 6538 } 6539 6540 static void thermal_exit(void) 6541 { 6542 switch (thermal_read_mode) { 6543 case TPACPI_THERMAL_TPEC_16: 6544 sysfs_remove_group(&tpacpi_hwmon->kobj, 6545 &thermal_temp_input16_group); 6546 break; 6547 case TPACPI_THERMAL_TPEC_8: 6548 case TPACPI_THERMAL_ACPI_TMP07: 6549 case TPACPI_THERMAL_ACPI_UPDT: 6550 sysfs_remove_group(&tpacpi_hwmon->kobj, 6551 &thermal_temp_input8_group); 6552 break; 6553 case TPACPI_THERMAL_NONE: 6554 default: 6555 break; 6556 } 6557 } 6558 6559 static int thermal_read(struct seq_file *m) 6560 { 6561 int n, i; 6562 struct ibm_thermal_sensors_struct t; 6563 6564 n = thermal_get_sensors(&t); 6565 if (unlikely(n < 0)) 6566 return n; 6567 6568 seq_printf(m, "temperatures:\t"); 6569 6570 if (n > 0) { 6571 for (i = 0; i < (n - 1); i++) 6572 seq_printf(m, "%d ", t.temp[i] / 1000); 6573 seq_printf(m, "%d\n", t.temp[i] / 1000); 6574 } else 6575 seq_printf(m, "not supported\n"); 6576 6577 return 0; 6578 } 6579 6580 static struct ibm_struct thermal_driver_data = { 6581 .name = "thermal", 6582 .read = thermal_read, 6583 .exit = thermal_exit, 6584 }; 6585 6586 /************************************************************************* 6587 * Backlight/brightness subdriver 6588 */ 6589 6590 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6591 6592 /* 6593 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6594 * CMOS NVRAM byte 0x5E, bits 0-3. 6595 * 6596 * EC HBRV (0x31) has the following layout 6597 * Bit 7: unknown function 6598 * Bit 6: unknown function 6599 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6600 * Bit 4: must be set to zero to avoid problems 6601 * Bit 3-0: backlight brightness level 6602 * 6603 * brightness_get_raw returns status data in the HBRV layout 6604 * 6605 * WARNING: The X61 has been verified to use HBRV for something else, so 6606 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6607 * testing on the very early *60 Lenovo models... 6608 */ 6609 6610 enum { 6611 TP_EC_BACKLIGHT = 0x31, 6612 6613 /* TP_EC_BACKLIGHT bitmasks */ 6614 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6615 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6616 TP_EC_BACKLIGHT_MAPSW = 0x20, 6617 }; 6618 6619 enum tpacpi_brightness_access_mode { 6620 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6621 TPACPI_BRGHT_MODE_EC, /* EC control */ 6622 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6623 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6624 TPACPI_BRGHT_MODE_MAX 6625 }; 6626 6627 static struct backlight_device *ibm_backlight_device; 6628 6629 static enum tpacpi_brightness_access_mode brightness_mode = 6630 TPACPI_BRGHT_MODE_MAX; 6631 6632 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6633 6634 static struct mutex brightness_mutex; 6635 6636 /* NVRAM brightness access, 6637 * call with brightness_mutex held! */ 6638 static unsigned int tpacpi_brightness_nvram_get(void) 6639 { 6640 u8 lnvram; 6641 6642 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6643 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6644 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6645 lnvram &= bright_maxlvl; 6646 6647 return lnvram; 6648 } 6649 6650 static void tpacpi_brightness_checkpoint_nvram(void) 6651 { 6652 u8 lec = 0; 6653 u8 b_nvram; 6654 6655 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6656 return; 6657 6658 vdbg_printk(TPACPI_DBG_BRGHT, 6659 "trying to checkpoint backlight level to NVRAM...\n"); 6660 6661 if (mutex_lock_killable(&brightness_mutex) < 0) 6662 return; 6663 6664 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6665 goto unlock; 6666 lec &= TP_EC_BACKLIGHT_LVLMSK; 6667 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6668 6669 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6670 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6671 /* NVRAM needs update */ 6672 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6673 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6674 b_nvram |= lec; 6675 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6676 dbg_printk(TPACPI_DBG_BRGHT, 6677 "updated NVRAM backlight level to %u (0x%02x)\n", 6678 (unsigned int) lec, (unsigned int) b_nvram); 6679 } else 6680 vdbg_printk(TPACPI_DBG_BRGHT, 6681 "NVRAM backlight level already is %u (0x%02x)\n", 6682 (unsigned int) lec, (unsigned int) b_nvram); 6683 6684 unlock: 6685 mutex_unlock(&brightness_mutex); 6686 } 6687 6688 6689 /* call with brightness_mutex held! */ 6690 static int tpacpi_brightness_get_raw(int *status) 6691 { 6692 u8 lec = 0; 6693 6694 switch (brightness_mode) { 6695 case TPACPI_BRGHT_MODE_UCMS_STEP: 6696 *status = tpacpi_brightness_nvram_get(); 6697 return 0; 6698 case TPACPI_BRGHT_MODE_EC: 6699 case TPACPI_BRGHT_MODE_ECNVRAM: 6700 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6701 return -EIO; 6702 *status = lec; 6703 return 0; 6704 default: 6705 return -ENXIO; 6706 } 6707 } 6708 6709 /* call with brightness_mutex held! */ 6710 /* do NOT call with illegal backlight level value */ 6711 static int tpacpi_brightness_set_ec(unsigned int value) 6712 { 6713 u8 lec = 0; 6714 6715 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6716 return -EIO; 6717 6718 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6719 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6720 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6721 return -EIO; 6722 6723 return 0; 6724 } 6725 6726 /* call with brightness_mutex held! */ 6727 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6728 { 6729 int cmos_cmd, inc; 6730 unsigned int current_value, i; 6731 6732 current_value = tpacpi_brightness_nvram_get(); 6733 6734 if (value == current_value) 6735 return 0; 6736 6737 cmos_cmd = (value > current_value) ? 6738 TP_CMOS_BRIGHTNESS_UP : 6739 TP_CMOS_BRIGHTNESS_DOWN; 6740 inc = (value > current_value) ? 1 : -1; 6741 6742 for (i = current_value; i != value; i += inc) 6743 if (issue_thinkpad_cmos_command(cmos_cmd)) 6744 return -EIO; 6745 6746 return 0; 6747 } 6748 6749 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6750 static int brightness_set(unsigned int value) 6751 { 6752 int res; 6753 6754 if (value > bright_maxlvl) 6755 return -EINVAL; 6756 6757 vdbg_printk(TPACPI_DBG_BRGHT, 6758 "set backlight level to %d\n", value); 6759 6760 res = mutex_lock_killable(&brightness_mutex); 6761 if (res < 0) 6762 return res; 6763 6764 switch (brightness_mode) { 6765 case TPACPI_BRGHT_MODE_EC: 6766 case TPACPI_BRGHT_MODE_ECNVRAM: 6767 res = tpacpi_brightness_set_ec(value); 6768 break; 6769 case TPACPI_BRGHT_MODE_UCMS_STEP: 6770 res = tpacpi_brightness_set_ucmsstep(value); 6771 break; 6772 default: 6773 res = -ENXIO; 6774 } 6775 6776 mutex_unlock(&brightness_mutex); 6777 return res; 6778 } 6779 6780 /* sysfs backlight class ----------------------------------------------- */ 6781 6782 static int brightness_update_status(struct backlight_device *bd) 6783 { 6784 unsigned int level = 6785 (bd->props.fb_blank == FB_BLANK_UNBLANK && 6786 bd->props.power == FB_BLANK_UNBLANK) ? 6787 bd->props.brightness : 0; 6788 6789 dbg_printk(TPACPI_DBG_BRGHT, 6790 "backlight: attempt to set level to %d\n", 6791 level); 6792 6793 /* it is the backlight class's job (caller) to handle 6794 * EINTR and other errors properly */ 6795 return brightness_set(level); 6796 } 6797 6798 static int brightness_get(struct backlight_device *bd) 6799 { 6800 int status, res; 6801 6802 res = mutex_lock_killable(&brightness_mutex); 6803 if (res < 0) 6804 return 0; 6805 6806 res = tpacpi_brightness_get_raw(&status); 6807 6808 mutex_unlock(&brightness_mutex); 6809 6810 if (res < 0) 6811 return 0; 6812 6813 return status & TP_EC_BACKLIGHT_LVLMSK; 6814 } 6815 6816 static void tpacpi_brightness_notify_change(void) 6817 { 6818 backlight_force_update(ibm_backlight_device, 6819 BACKLIGHT_UPDATE_HOTKEY); 6820 } 6821 6822 static const struct backlight_ops ibm_backlight_data = { 6823 .get_brightness = brightness_get, 6824 .update_status = brightness_update_status, 6825 }; 6826 6827 /* --------------------------------------------------------------------- */ 6828 6829 /* 6830 * Call _BCL method of video device. On some ThinkPads this will 6831 * switch the firmware to the ACPI brightness control mode. 6832 */ 6833 6834 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6835 { 6836 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6837 union acpi_object *obj; 6838 struct acpi_device *device, *child; 6839 int rc; 6840 6841 if (acpi_bus_get_device(handle, &device)) 6842 return 0; 6843 6844 rc = 0; 6845 list_for_each_entry(child, &device->children, node) { 6846 acpi_status status = acpi_evaluate_object(child->handle, "_BCL", 6847 NULL, &buffer); 6848 if (ACPI_FAILURE(status)) { 6849 buffer.length = ACPI_ALLOCATE_BUFFER; 6850 continue; 6851 } 6852 6853 obj = (union acpi_object *)buffer.pointer; 6854 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 6855 pr_err("Unknown _BCL data, please report this to %s\n", 6856 TPACPI_MAIL); 6857 rc = 0; 6858 } else { 6859 rc = obj->package.count; 6860 } 6861 break; 6862 } 6863 6864 kfree(buffer.pointer); 6865 return rc; 6866 } 6867 6868 6869 /* 6870 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6871 */ 6872 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6873 { 6874 acpi_handle video_device; 6875 int bcl_levels = 0; 6876 6877 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6878 if (video_device) 6879 bcl_levels = tpacpi_query_bcl_levels(video_device); 6880 6881 tp_features.bright_acpimode = (bcl_levels > 0); 6882 6883 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6884 } 6885 6886 /* 6887 * These are only useful for models that have only one possibility 6888 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6889 * these quirks. 6890 */ 6891 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6892 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6893 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6894 6895 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6896 /* Models with ATI GPUs known to require ECNVRAM mode */ 6897 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6898 6899 /* Models with ATI GPUs that can use ECNVRAM */ 6900 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6901 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6902 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6903 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6904 6905 /* Models with Intel Extreme Graphics 2 */ 6906 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6907 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6908 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6909 6910 /* Models with Intel GMA900 */ 6911 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6912 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6913 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6914 }; 6915 6916 /* 6917 * Returns < 0 for error, otherwise sets tp_features.bright_* 6918 * and bright_maxlvl. 6919 */ 6920 static void __init tpacpi_detect_brightness_capabilities(void) 6921 { 6922 unsigned int b; 6923 6924 vdbg_printk(TPACPI_DBG_INIT, 6925 "detecting firmware brightness interface capabilities\n"); 6926 6927 /* we could run a quirks check here (same table used by 6928 * brightness_init) if needed */ 6929 6930 /* 6931 * We always attempt to detect acpi support, so as to switch 6932 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6933 * going to publish a backlight interface 6934 */ 6935 b = tpacpi_check_std_acpi_brightness_support(); 6936 switch (b) { 6937 case 16: 6938 bright_maxlvl = 15; 6939 break; 6940 case 8: 6941 case 0: 6942 bright_maxlvl = 7; 6943 break; 6944 default: 6945 tp_features.bright_unkfw = 1; 6946 bright_maxlvl = b - 1; 6947 } 6948 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6949 } 6950 6951 static int __init brightness_init(struct ibm_init_struct *iibm) 6952 { 6953 struct backlight_properties props; 6954 int b; 6955 unsigned long quirks; 6956 6957 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6958 6959 mutex_init(&brightness_mutex); 6960 6961 quirks = tpacpi_check_quirks(brightness_quirk_table, 6962 ARRAY_SIZE(brightness_quirk_table)); 6963 6964 /* tpacpi_detect_brightness_capabilities() must have run already */ 6965 6966 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6967 if (tp_features.bright_unkfw) 6968 return 1; 6969 6970 if (!brightness_enable) { 6971 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6972 "brightness support disabled by module parameter\n"); 6973 return 1; 6974 } 6975 6976 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6977 if (brightness_enable > 1) { 6978 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6979 return 1; 6980 } else if (brightness_enable == 1) { 6981 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6982 return 1; 6983 } 6984 } else if (!tp_features.bright_acpimode) { 6985 pr_notice("ACPI backlight interface not available\n"); 6986 return 1; 6987 } 6988 6989 pr_notice("ACPI native brightness control enabled\n"); 6990 6991 /* 6992 * Check for module parameter bogosity, note that we 6993 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6994 * able to detect "unspecified" 6995 */ 6996 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6997 return -EINVAL; 6998 6999 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 7000 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 7001 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 7002 if (quirks & TPACPI_BRGHT_Q_EC) 7003 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 7004 else 7005 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 7006 7007 dbg_printk(TPACPI_DBG_BRGHT, 7008 "driver auto-selected brightness_mode=%d\n", 7009 brightness_mode); 7010 } 7011 7012 /* Safety */ 7013 if (!tpacpi_is_ibm() && 7014 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 7015 brightness_mode == TPACPI_BRGHT_MODE_EC)) 7016 return -EINVAL; 7017 7018 if (tpacpi_brightness_get_raw(&b) < 0) 7019 return 1; 7020 7021 memset(&props, 0, sizeof(struct backlight_properties)); 7022 props.type = BACKLIGHT_PLATFORM; 7023 props.max_brightness = bright_maxlvl; 7024 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 7025 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 7026 NULL, NULL, 7027 &ibm_backlight_data, 7028 &props); 7029 if (IS_ERR(ibm_backlight_device)) { 7030 int rc = PTR_ERR(ibm_backlight_device); 7031 ibm_backlight_device = NULL; 7032 pr_err("Could not register backlight device\n"); 7033 return rc; 7034 } 7035 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7036 "brightness is supported\n"); 7037 7038 if (quirks & TPACPI_BRGHT_Q_ASK) { 7039 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 7040 brightness_mode); 7041 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 7042 TPACPI_MAIL); 7043 } 7044 7045 /* Added by mistake in early 2007. Probably useless, but it could 7046 * be working around some unknown firmware problem where the value 7047 * read at startup doesn't match the real hardware state... so leave 7048 * it in place just in case */ 7049 backlight_update_status(ibm_backlight_device); 7050 7051 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7052 "brightness: registering brightness hotkeys as change notification\n"); 7053 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7054 | TP_ACPI_HKEY_BRGHTUP_MASK 7055 | TP_ACPI_HKEY_BRGHTDWN_MASK); 7056 return 0; 7057 } 7058 7059 static void brightness_suspend(void) 7060 { 7061 tpacpi_brightness_checkpoint_nvram(); 7062 } 7063 7064 static void brightness_shutdown(void) 7065 { 7066 tpacpi_brightness_checkpoint_nvram(); 7067 } 7068 7069 static void brightness_exit(void) 7070 { 7071 if (ibm_backlight_device) { 7072 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 7073 "calling backlight_device_unregister()\n"); 7074 backlight_device_unregister(ibm_backlight_device); 7075 } 7076 7077 tpacpi_brightness_checkpoint_nvram(); 7078 } 7079 7080 static int brightness_read(struct seq_file *m) 7081 { 7082 int level; 7083 7084 level = brightness_get(NULL); 7085 if (level < 0) { 7086 seq_printf(m, "level:\t\tunreadable\n"); 7087 } else { 7088 seq_printf(m, "level:\t\t%d\n", level); 7089 seq_printf(m, "commands:\tup, down\n"); 7090 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7091 bright_maxlvl); 7092 } 7093 7094 return 0; 7095 } 7096 7097 static int brightness_write(char *buf) 7098 { 7099 int level; 7100 int rc; 7101 char *cmd; 7102 7103 level = brightness_get(NULL); 7104 if (level < 0) 7105 return level; 7106 7107 while ((cmd = strsep(&buf, ","))) { 7108 if (strlencmp(cmd, "up") == 0) { 7109 if (level < bright_maxlvl) 7110 level++; 7111 } else if (strlencmp(cmd, "down") == 0) { 7112 if (level > 0) 7113 level--; 7114 } else if (sscanf(cmd, "level %d", &level) == 1 && 7115 level >= 0 && level <= bright_maxlvl) { 7116 /* new level set */ 7117 } else 7118 return -EINVAL; 7119 } 7120 7121 tpacpi_disclose_usertask("procfs brightness", 7122 "set level to %d\n", level); 7123 7124 /* 7125 * Now we know what the final level should be, so we try to set it. 7126 * Doing it this way makes the syscall restartable in case of EINTR 7127 */ 7128 rc = brightness_set(level); 7129 if (!rc && ibm_backlight_device) 7130 backlight_force_update(ibm_backlight_device, 7131 BACKLIGHT_UPDATE_SYSFS); 7132 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7133 } 7134 7135 static struct ibm_struct brightness_driver_data = { 7136 .name = "brightness", 7137 .read = brightness_read, 7138 .write = brightness_write, 7139 .exit = brightness_exit, 7140 .suspend = brightness_suspend, 7141 .shutdown = brightness_shutdown, 7142 }; 7143 7144 /************************************************************************* 7145 * Volume subdriver 7146 */ 7147 7148 /* 7149 * IBM ThinkPads have a simple volume controller with MUTE gating. 7150 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7151 * 7152 * Since the *61 series (and probably also the later *60 series), Lenovo 7153 * ThinkPads only implement the MUTE gate. 7154 * 7155 * EC register 0x30 7156 * Bit 6: MUTE (1 mutes sound) 7157 * Bit 3-0: Volume 7158 * Other bits should be zero as far as we know. 7159 * 7160 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7161 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7162 * such as bit 7 which is used to detect repeated presses of MUTE, 7163 * and we leave them unchanged. 7164 * 7165 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7166 * in response to user input. Unfortunately, this rarely works well. 7167 * The laptop changes the state of its internal MUTE gate and, on some 7168 * models, sends KEY_MUTE, causing any user code that responds to the 7169 * mute button to get confused. The hardware MUTE gate is also 7170 * unnecessary, since user code can handle the mute button without 7171 * kernel or EC help. 7172 * 7173 * To avoid confusing userspace, we simply disable all EC-based mute 7174 * and volume controls when possible. 7175 */ 7176 7177 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7178 7179 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7180 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7181 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7182 7183 #if SNDRV_CARDS <= 32 7184 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7185 #else 7186 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7187 #endif 7188 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7189 static char *alsa_id = "ThinkPadEC"; 7190 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7191 7192 struct tpacpi_alsa_data { 7193 struct snd_card *card; 7194 struct snd_ctl_elem_id *ctl_mute_id; 7195 struct snd_ctl_elem_id *ctl_vol_id; 7196 }; 7197 7198 static struct snd_card *alsa_card; 7199 7200 enum { 7201 TP_EC_AUDIO = 0x30, 7202 7203 /* TP_EC_AUDIO bits */ 7204 TP_EC_AUDIO_MUTESW = 6, 7205 7206 /* TP_EC_AUDIO bitmasks */ 7207 TP_EC_AUDIO_LVL_MSK = 0x0F, 7208 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7209 7210 /* Maximum volume */ 7211 TP_EC_VOLUME_MAX = 14, 7212 }; 7213 7214 enum tpacpi_volume_access_mode { 7215 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7216 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7217 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7218 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7219 TPACPI_VOL_MODE_MAX 7220 }; 7221 7222 enum tpacpi_volume_capabilities { 7223 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7224 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7225 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7226 TPACPI_VOL_CAP_MAX 7227 }; 7228 7229 enum tpacpi_mute_btn_mode { 7230 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7231 /* We don't know what mode 1 is. */ 7232 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7233 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7234 }; 7235 7236 static enum tpacpi_volume_access_mode volume_mode = 7237 TPACPI_VOL_MODE_MAX; 7238 7239 static enum tpacpi_volume_capabilities volume_capabilities; 7240 static bool volume_control_allowed; 7241 static bool software_mute_requested = true; 7242 static bool software_mute_active; 7243 static int software_mute_orig_mode; 7244 7245 /* 7246 * Used to syncronize writers to TP_EC_AUDIO and 7247 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7248 */ 7249 static struct mutex volume_mutex; 7250 7251 static void tpacpi_volume_checkpoint_nvram(void) 7252 { 7253 u8 lec = 0; 7254 u8 b_nvram; 7255 u8 ec_mask; 7256 7257 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7258 return; 7259 if (!volume_control_allowed) 7260 return; 7261 if (software_mute_active) 7262 return; 7263 7264 vdbg_printk(TPACPI_DBG_MIXER, 7265 "trying to checkpoint mixer state to NVRAM...\n"); 7266 7267 if (tp_features.mixer_no_level_control) 7268 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7269 else 7270 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7271 7272 if (mutex_lock_killable(&volume_mutex) < 0) 7273 return; 7274 7275 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7276 goto unlock; 7277 lec &= ec_mask; 7278 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7279 7280 if (lec != (b_nvram & ec_mask)) { 7281 /* NVRAM needs update */ 7282 b_nvram &= ~ec_mask; 7283 b_nvram |= lec; 7284 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7285 dbg_printk(TPACPI_DBG_MIXER, 7286 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7287 (unsigned int) lec, (unsigned int) b_nvram); 7288 } else { 7289 vdbg_printk(TPACPI_DBG_MIXER, 7290 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7291 (unsigned int) lec, (unsigned int) b_nvram); 7292 } 7293 7294 unlock: 7295 mutex_unlock(&volume_mutex); 7296 } 7297 7298 static int volume_get_status_ec(u8 *status) 7299 { 7300 u8 s; 7301 7302 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7303 return -EIO; 7304 7305 *status = s; 7306 7307 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7308 7309 return 0; 7310 } 7311 7312 static int volume_get_status(u8 *status) 7313 { 7314 return volume_get_status_ec(status); 7315 } 7316 7317 static int volume_set_status_ec(const u8 status) 7318 { 7319 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7320 return -EIO; 7321 7322 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7323 7324 /* 7325 * On X200s, and possibly on others, it can take a while for 7326 * reads to become correct. 7327 */ 7328 msleep(1); 7329 7330 return 0; 7331 } 7332 7333 static int volume_set_status(const u8 status) 7334 { 7335 return volume_set_status_ec(status); 7336 } 7337 7338 /* returns < 0 on error, 0 on no change, 1 on change */ 7339 static int __volume_set_mute_ec(const bool mute) 7340 { 7341 int rc; 7342 u8 s, n; 7343 7344 if (mutex_lock_killable(&volume_mutex) < 0) 7345 return -EINTR; 7346 7347 rc = volume_get_status_ec(&s); 7348 if (rc) 7349 goto unlock; 7350 7351 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7352 s & ~TP_EC_AUDIO_MUTESW_MSK; 7353 7354 if (n != s) { 7355 rc = volume_set_status_ec(n); 7356 if (!rc) 7357 rc = 1; 7358 } 7359 7360 unlock: 7361 mutex_unlock(&volume_mutex); 7362 return rc; 7363 } 7364 7365 static int volume_alsa_set_mute(const bool mute) 7366 { 7367 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7368 (mute) ? "" : "un"); 7369 return __volume_set_mute_ec(mute); 7370 } 7371 7372 static int volume_set_mute(const bool mute) 7373 { 7374 int rc; 7375 7376 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7377 (mute) ? "" : "un"); 7378 7379 rc = __volume_set_mute_ec(mute); 7380 return (rc < 0) ? rc : 0; 7381 } 7382 7383 /* returns < 0 on error, 0 on no change, 1 on change */ 7384 static int __volume_set_volume_ec(const u8 vol) 7385 { 7386 int rc; 7387 u8 s, n; 7388 7389 if (vol > TP_EC_VOLUME_MAX) 7390 return -EINVAL; 7391 7392 if (mutex_lock_killable(&volume_mutex) < 0) 7393 return -EINTR; 7394 7395 rc = volume_get_status_ec(&s); 7396 if (rc) 7397 goto unlock; 7398 7399 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7400 7401 if (n != s) { 7402 rc = volume_set_status_ec(n); 7403 if (!rc) 7404 rc = 1; 7405 } 7406 7407 unlock: 7408 mutex_unlock(&volume_mutex); 7409 return rc; 7410 } 7411 7412 static int volume_set_software_mute(bool startup) 7413 { 7414 int result; 7415 7416 if (!tpacpi_is_lenovo()) 7417 return -ENODEV; 7418 7419 if (startup) { 7420 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7421 "HAUM", "qd")) 7422 return -EIO; 7423 7424 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7425 "Initial HAUM setting was %d\n", 7426 software_mute_orig_mode); 7427 } 7428 7429 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7430 (int)TP_EC_MUTE_BTN_NONE)) 7431 return -EIO; 7432 7433 if (result != TP_EC_MUTE_BTN_NONE) 7434 pr_warn("Unexpected SAUM result %d\n", 7435 result); 7436 7437 /* 7438 * In software mute mode, the standard codec controls take 7439 * precendence, so we unmute the ThinkPad HW switch at 7440 * startup. Just on case there are SAUM-capable ThinkPads 7441 * with level controls, set max HW volume as well. 7442 */ 7443 if (tp_features.mixer_no_level_control) 7444 result = volume_set_mute(false); 7445 else 7446 result = volume_set_status(TP_EC_VOLUME_MAX); 7447 7448 if (result != 0) 7449 pr_warn("Failed to unmute the HW mute switch\n"); 7450 7451 return 0; 7452 } 7453 7454 static void volume_exit_software_mute(void) 7455 { 7456 int r; 7457 7458 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7459 || r != software_mute_orig_mode) 7460 pr_warn("Failed to restore mute mode\n"); 7461 } 7462 7463 static int volume_alsa_set_volume(const u8 vol) 7464 { 7465 dbg_printk(TPACPI_DBG_MIXER, 7466 "ALSA: trying to set volume level to %hu\n", vol); 7467 return __volume_set_volume_ec(vol); 7468 } 7469 7470 static void volume_alsa_notify_change(void) 7471 { 7472 struct tpacpi_alsa_data *d; 7473 7474 if (alsa_card && alsa_card->private_data) { 7475 d = alsa_card->private_data; 7476 if (d->ctl_mute_id) 7477 snd_ctl_notify(alsa_card, 7478 SNDRV_CTL_EVENT_MASK_VALUE, 7479 d->ctl_mute_id); 7480 if (d->ctl_vol_id) 7481 snd_ctl_notify(alsa_card, 7482 SNDRV_CTL_EVENT_MASK_VALUE, 7483 d->ctl_vol_id); 7484 } 7485 } 7486 7487 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7488 struct snd_ctl_elem_info *uinfo) 7489 { 7490 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7491 uinfo->count = 1; 7492 uinfo->value.integer.min = 0; 7493 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7494 return 0; 7495 } 7496 7497 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7498 struct snd_ctl_elem_value *ucontrol) 7499 { 7500 u8 s; 7501 int rc; 7502 7503 rc = volume_get_status(&s); 7504 if (rc < 0) 7505 return rc; 7506 7507 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7508 return 0; 7509 } 7510 7511 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7512 struct snd_ctl_elem_value *ucontrol) 7513 { 7514 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7515 ucontrol->value.integer.value[0]); 7516 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7517 } 7518 7519 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7520 7521 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7522 struct snd_ctl_elem_value *ucontrol) 7523 { 7524 u8 s; 7525 int rc; 7526 7527 rc = volume_get_status(&s); 7528 if (rc < 0) 7529 return rc; 7530 7531 ucontrol->value.integer.value[0] = 7532 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7533 return 0; 7534 } 7535 7536 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7537 struct snd_ctl_elem_value *ucontrol) 7538 { 7539 tpacpi_disclose_usertask("ALSA", "%smute\n", 7540 ucontrol->value.integer.value[0] ? 7541 "un" : ""); 7542 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7543 } 7544 7545 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7546 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7547 .name = "Console Playback Volume", 7548 .index = 0, 7549 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7550 .info = volume_alsa_vol_info, 7551 .get = volume_alsa_vol_get, 7552 }; 7553 7554 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7555 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7556 .name = "Console Playback Switch", 7557 .index = 0, 7558 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7559 .info = volume_alsa_mute_info, 7560 .get = volume_alsa_mute_get, 7561 }; 7562 7563 static void volume_suspend(void) 7564 { 7565 tpacpi_volume_checkpoint_nvram(); 7566 } 7567 7568 static void volume_resume(void) 7569 { 7570 if (software_mute_active) { 7571 if (volume_set_software_mute(false) < 0) 7572 pr_warn("Failed to restore software mute\n"); 7573 } else { 7574 volume_alsa_notify_change(); 7575 } 7576 } 7577 7578 static void volume_shutdown(void) 7579 { 7580 tpacpi_volume_checkpoint_nvram(); 7581 } 7582 7583 static void volume_exit(void) 7584 { 7585 if (alsa_card) { 7586 snd_card_free(alsa_card); 7587 alsa_card = NULL; 7588 } 7589 7590 tpacpi_volume_checkpoint_nvram(); 7591 7592 if (software_mute_active) 7593 volume_exit_software_mute(); 7594 } 7595 7596 static int __init volume_create_alsa_mixer(void) 7597 { 7598 struct snd_card *card; 7599 struct tpacpi_alsa_data *data; 7600 struct snd_kcontrol *ctl_vol; 7601 struct snd_kcontrol *ctl_mute; 7602 int rc; 7603 7604 rc = snd_card_new(&tpacpi_pdev->dev, 7605 alsa_index, alsa_id, THIS_MODULE, 7606 sizeof(struct tpacpi_alsa_data), &card); 7607 if (rc < 0 || !card) { 7608 pr_err("Failed to create ALSA card structures: %d\n", rc); 7609 return 1; 7610 } 7611 7612 BUG_ON(!card->private_data); 7613 data = card->private_data; 7614 data->card = card; 7615 7616 strlcpy(card->driver, TPACPI_ALSA_DRVNAME, 7617 sizeof(card->driver)); 7618 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7619 sizeof(card->shortname)); 7620 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7621 (thinkpad_id.ec_version_str) ? 7622 thinkpad_id.ec_version_str : "(unknown)"); 7623 snprintf(card->longname, sizeof(card->longname), 7624 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7625 (thinkpad_id.ec_version_str) ? 7626 thinkpad_id.ec_version_str : "unknown"); 7627 7628 if (volume_control_allowed) { 7629 volume_alsa_control_vol.put = volume_alsa_vol_put; 7630 volume_alsa_control_vol.access = 7631 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7632 7633 volume_alsa_control_mute.put = volume_alsa_mute_put; 7634 volume_alsa_control_mute.access = 7635 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7636 } 7637 7638 if (!tp_features.mixer_no_level_control) { 7639 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7640 rc = snd_ctl_add(card, ctl_vol); 7641 if (rc < 0) { 7642 pr_err("Failed to create ALSA volume control: %d\n", 7643 rc); 7644 goto err_exit; 7645 } 7646 data->ctl_vol_id = &ctl_vol->id; 7647 } 7648 7649 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7650 rc = snd_ctl_add(card, ctl_mute); 7651 if (rc < 0) { 7652 pr_err("Failed to create ALSA mute control: %d\n", rc); 7653 goto err_exit; 7654 } 7655 data->ctl_mute_id = &ctl_mute->id; 7656 7657 rc = snd_card_register(card); 7658 if (rc < 0) { 7659 pr_err("Failed to register ALSA card: %d\n", rc); 7660 goto err_exit; 7661 } 7662 7663 alsa_card = card; 7664 return 0; 7665 7666 err_exit: 7667 snd_card_free(card); 7668 return 1; 7669 } 7670 7671 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7672 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7673 7674 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7675 /* Whitelist volume level on all IBM by default */ 7676 { .vendor = PCI_VENDOR_ID_IBM, 7677 .bios = TPACPI_MATCH_ANY, 7678 .ec = TPACPI_MATCH_ANY, 7679 .quirks = TPACPI_VOL_Q_LEVEL }, 7680 7681 /* Lenovo models with volume control (needs confirmation) */ 7682 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7683 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7684 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7685 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7686 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7687 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7688 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7689 7690 /* Whitelist mute-only on all Lenovo by default */ 7691 { .vendor = PCI_VENDOR_ID_LENOVO, 7692 .bios = TPACPI_MATCH_ANY, 7693 .ec = TPACPI_MATCH_ANY, 7694 .quirks = TPACPI_VOL_Q_MUTEONLY } 7695 }; 7696 7697 static int __init volume_init(struct ibm_init_struct *iibm) 7698 { 7699 unsigned long quirks; 7700 int rc; 7701 7702 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7703 7704 mutex_init(&volume_mutex); 7705 7706 /* 7707 * Check for module parameter bogosity, note that we 7708 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7709 * able to detect "unspecified" 7710 */ 7711 if (volume_mode > TPACPI_VOL_MODE_MAX) 7712 return -EINVAL; 7713 7714 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7715 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7716 TPACPI_MAIL); 7717 return 1; 7718 } 7719 7720 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7721 return -EINVAL; 7722 7723 /* 7724 * The ALSA mixer is our primary interface. 7725 * When disabled, don't install the subdriver at all 7726 */ 7727 if (!alsa_enable) { 7728 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7729 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7730 return 1; 7731 } 7732 7733 quirks = tpacpi_check_quirks(volume_quirk_table, 7734 ARRAY_SIZE(volume_quirk_table)); 7735 7736 switch (volume_capabilities) { 7737 case TPACPI_VOL_CAP_AUTO: 7738 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7739 tp_features.mixer_no_level_control = 1; 7740 else if (quirks & TPACPI_VOL_Q_LEVEL) 7741 tp_features.mixer_no_level_control = 0; 7742 else 7743 return 1; /* no mixer */ 7744 break; 7745 case TPACPI_VOL_CAP_VOLMUTE: 7746 tp_features.mixer_no_level_control = 0; 7747 break; 7748 case TPACPI_VOL_CAP_MUTEONLY: 7749 tp_features.mixer_no_level_control = 1; 7750 break; 7751 default: 7752 return 1; 7753 } 7754 7755 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7756 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7757 "using user-supplied volume_capabilities=%d\n", 7758 volume_capabilities); 7759 7760 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7761 volume_mode == TPACPI_VOL_MODE_MAX) { 7762 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7763 7764 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7765 "driver auto-selected volume_mode=%d\n", 7766 volume_mode); 7767 } else { 7768 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7769 "using user-supplied volume_mode=%d\n", 7770 volume_mode); 7771 } 7772 7773 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7774 "mute is supported, volume control is %s\n", 7775 str_supported(!tp_features.mixer_no_level_control)); 7776 7777 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7778 software_mute_active = true; 7779 } else { 7780 rc = volume_create_alsa_mixer(); 7781 if (rc) { 7782 pr_err("Could not create the ALSA mixer interface\n"); 7783 return rc; 7784 } 7785 7786 pr_info("Console audio control enabled, mode: %s\n", 7787 (volume_control_allowed) ? 7788 "override (read/write)" : 7789 "monitor (read only)"); 7790 } 7791 7792 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7793 "registering volume hotkeys as change notification\n"); 7794 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7795 | TP_ACPI_HKEY_VOLUP_MASK 7796 | TP_ACPI_HKEY_VOLDWN_MASK 7797 | TP_ACPI_HKEY_MUTE_MASK); 7798 7799 return 0; 7800 } 7801 7802 static int volume_read(struct seq_file *m) 7803 { 7804 u8 status; 7805 7806 if (volume_get_status(&status) < 0) { 7807 seq_printf(m, "level:\t\tunreadable\n"); 7808 } else { 7809 if (tp_features.mixer_no_level_control) 7810 seq_printf(m, "level:\t\tunsupported\n"); 7811 else 7812 seq_printf(m, "level:\t\t%d\n", 7813 status & TP_EC_AUDIO_LVL_MSK); 7814 7815 seq_printf(m, "mute:\t\t%s\n", 7816 onoff(status, TP_EC_AUDIO_MUTESW)); 7817 7818 if (volume_control_allowed) { 7819 seq_printf(m, "commands:\tunmute, mute\n"); 7820 if (!tp_features.mixer_no_level_control) { 7821 seq_printf(m, "commands:\tup, down\n"); 7822 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7823 TP_EC_VOLUME_MAX); 7824 } 7825 } 7826 } 7827 7828 return 0; 7829 } 7830 7831 static int volume_write(char *buf) 7832 { 7833 u8 s; 7834 u8 new_level, new_mute; 7835 int l; 7836 char *cmd; 7837 int rc; 7838 7839 /* 7840 * We do allow volume control at driver startup, so that the 7841 * user can set initial state through the volume=... parameter hack. 7842 */ 7843 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7844 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7845 tp_warned.volume_ctrl_forbidden = 1; 7846 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7847 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7848 } 7849 return -EPERM; 7850 } 7851 7852 rc = volume_get_status(&s); 7853 if (rc < 0) 7854 return rc; 7855 7856 new_level = s & TP_EC_AUDIO_LVL_MSK; 7857 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7858 7859 while ((cmd = strsep(&buf, ","))) { 7860 if (!tp_features.mixer_no_level_control) { 7861 if (strlencmp(cmd, "up") == 0) { 7862 if (new_mute) 7863 new_mute = 0; 7864 else if (new_level < TP_EC_VOLUME_MAX) 7865 new_level++; 7866 continue; 7867 } else if (strlencmp(cmd, "down") == 0) { 7868 if (new_mute) 7869 new_mute = 0; 7870 else if (new_level > 0) 7871 new_level--; 7872 continue; 7873 } else if (sscanf(cmd, "level %u", &l) == 1 && 7874 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7875 new_level = l; 7876 continue; 7877 } 7878 } 7879 if (strlencmp(cmd, "mute") == 0) 7880 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7881 else if (strlencmp(cmd, "unmute") == 0) 7882 new_mute = 0; 7883 else 7884 return -EINVAL; 7885 } 7886 7887 if (tp_features.mixer_no_level_control) { 7888 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7889 new_mute ? "" : "un"); 7890 rc = volume_set_mute(!!new_mute); 7891 } else { 7892 tpacpi_disclose_usertask("procfs volume", 7893 "%smute and set level to %d\n", 7894 new_mute ? "" : "un", new_level); 7895 rc = volume_set_status(new_mute | new_level); 7896 } 7897 volume_alsa_notify_change(); 7898 7899 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7900 } 7901 7902 static struct ibm_struct volume_driver_data = { 7903 .name = "volume", 7904 .read = volume_read, 7905 .write = volume_write, 7906 .exit = volume_exit, 7907 .suspend = volume_suspend, 7908 .resume = volume_resume, 7909 .shutdown = volume_shutdown, 7910 }; 7911 7912 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7913 7914 #define alsa_card NULL 7915 7916 static inline void volume_alsa_notify_change(void) 7917 { 7918 } 7919 7920 static int __init volume_init(struct ibm_init_struct *iibm) 7921 { 7922 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7923 7924 return 1; 7925 } 7926 7927 static struct ibm_struct volume_driver_data = { 7928 .name = "volume", 7929 }; 7930 7931 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7932 7933 /************************************************************************* 7934 * Fan subdriver 7935 */ 7936 7937 /* 7938 * FAN ACCESS MODES 7939 * 7940 * TPACPI_FAN_RD_ACPI_GFAN: 7941 * ACPI GFAN method: returns fan level 7942 * 7943 * see TPACPI_FAN_WR_ACPI_SFAN 7944 * EC 0x2f (HFSP) not available if GFAN exists 7945 * 7946 * TPACPI_FAN_WR_ACPI_SFAN: 7947 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7948 * 7949 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7950 * it for writing. 7951 * 7952 * TPACPI_FAN_WR_TPEC: 7953 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7954 * Supported on almost all ThinkPads 7955 * 7956 * Fan speed changes of any sort (including those caused by the 7957 * disengaged mode) are usually done slowly by the firmware as the 7958 * maximum amount of fan duty cycle change per second seems to be 7959 * limited. 7960 * 7961 * Reading is not available if GFAN exists. 7962 * Writing is not available if SFAN exists. 7963 * 7964 * Bits 7965 * 7 automatic mode engaged; 7966 * (default operation mode of the ThinkPad) 7967 * fan level is ignored in this mode. 7968 * 6 full speed mode (takes precedence over bit 7); 7969 * not available on all thinkpads. May disable 7970 * the tachometer while the fan controller ramps up 7971 * the speed (which can take up to a few *minutes*). 7972 * Speeds up fan to 100% duty-cycle, which is far above 7973 * the standard RPM levels. It is not impossible that 7974 * it could cause hardware damage. 7975 * 5-3 unused in some models. Extra bits for fan level 7976 * in others, but still useless as all values above 7977 * 7 map to the same speed as level 7 in these models. 7978 * 2-0 fan level (0..7 usually) 7979 * 0x00 = stop 7980 * 0x07 = max (set when temperatures critical) 7981 * Some ThinkPads may have other levels, see 7982 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7983 * 7984 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7985 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7986 * does so, its initial value is meaningless (0x07). 7987 * 7988 * For firmware bugs, refer to: 7989 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7990 * 7991 * ---- 7992 * 7993 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7994 * Main fan tachometer reading (in RPM) 7995 * 7996 * This register is present on all ThinkPads with a new-style EC, and 7997 * it is known not to be present on the A21m/e, and T22, as there is 7998 * something else in offset 0x84 according to the ACPI DSDT. Other 7999 * ThinkPads from this same time period (and earlier) probably lack the 8000 * tachometer as well. 8001 * 8002 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 8003 * was never fixed by IBM to report the EC firmware version string 8004 * probably support the tachometer (like the early X models), so 8005 * detecting it is quite hard. We need more data to know for sure. 8006 * 8007 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 8008 * might result. 8009 * 8010 * FIRMWARE BUG: may go stale while the EC is switching to full speed 8011 * mode. 8012 * 8013 * For firmware bugs, refer to: 8014 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 8015 * 8016 * ---- 8017 * 8018 * ThinkPad EC register 0x31 bit 0 (only on select models) 8019 * 8020 * When bit 0 of EC register 0x31 is zero, the tachometer registers 8021 * show the speed of the main fan. When bit 0 of EC register 0x31 8022 * is one, the tachometer registers show the speed of the auxiliary 8023 * fan. 8024 * 8025 * Fan control seems to affect both fans, regardless of the state 8026 * of this bit. 8027 * 8028 * So far, only the firmware for the X60/X61 non-tablet versions 8029 * seem to support this (firmware TP-7M). 8030 * 8031 * TPACPI_FAN_WR_ACPI_FANS: 8032 * ThinkPad X31, X40, X41. Not available in the X60. 8033 * 8034 * FANS ACPI handle: takes three arguments: low speed, medium speed, 8035 * high speed. ACPI DSDT seems to map these three speeds to levels 8036 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 8037 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 8038 * 8039 * The speeds are stored on handles 8040 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 8041 * 8042 * There are three default speed sets, accessible as handles: 8043 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 8044 * 8045 * ACPI DSDT switches which set is in use depending on various 8046 * factors. 8047 * 8048 * TPACPI_FAN_WR_TPEC is also available and should be used to 8049 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 8050 * but the ACPI tables just mention level 7. 8051 */ 8052 8053 enum { /* Fan control constants */ 8054 fan_status_offset = 0x2f, /* EC register 0x2f */ 8055 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 8056 * 0x84 must be read before 0x85 */ 8057 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 8058 bit 0 selects which fan is active */ 8059 8060 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 8061 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 8062 8063 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 8064 }; 8065 8066 enum fan_status_access_mode { 8067 TPACPI_FAN_NONE = 0, /* No fan status or control */ 8068 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 8069 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 8070 }; 8071 8072 enum fan_control_access_mode { 8073 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 8074 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 8075 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 8076 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 8077 }; 8078 8079 enum fan_control_commands { 8080 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 8081 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 8082 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 8083 * and also watchdog cmd */ 8084 }; 8085 8086 static bool fan_control_allowed; 8087 8088 static enum fan_status_access_mode fan_status_access_mode; 8089 static enum fan_control_access_mode fan_control_access_mode; 8090 static enum fan_control_commands fan_control_commands; 8091 8092 static u8 fan_control_initial_status; 8093 static u8 fan_control_desired_level; 8094 static u8 fan_control_resume_level; 8095 static int fan_watchdog_maxinterval; 8096 8097 static struct mutex fan_mutex; 8098 8099 static void fan_watchdog_fire(struct work_struct *ignored); 8100 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 8101 8102 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 8103 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 8104 "\\FSPD", /* 600e/x, 770e, 770x */ 8105 ); /* all others */ 8106 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8107 "JFNS", /* 770x-JL */ 8108 ); /* all others */ 8109 8110 /* 8111 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8112 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8113 * be in auto mode (0x80). 8114 * 8115 * This is corrected by any write to HFSP either by the driver, or 8116 * by the firmware. 8117 * 8118 * We assume 0x07 really means auto mode while this quirk is active, 8119 * as this is far more likely than the ThinkPad being in level 7, 8120 * which is only used by the firmware during thermal emergencies. 8121 * 8122 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8123 * TP-70 (T43, R52), which are known to be buggy. 8124 */ 8125 8126 static void fan_quirk1_setup(void) 8127 { 8128 if (fan_control_initial_status == 0x07) { 8129 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8130 tp_features.fan_ctrl_status_undef = 1; 8131 } 8132 } 8133 8134 static void fan_quirk1_handle(u8 *fan_status) 8135 { 8136 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8137 if (*fan_status != fan_control_initial_status) { 8138 /* something changed the HFSP regisnter since 8139 * driver init time, so it is not undefined 8140 * anymore */ 8141 tp_features.fan_ctrl_status_undef = 0; 8142 } else { 8143 /* Return most likely status. In fact, it 8144 * might be the only possible status */ 8145 *fan_status = TP_EC_FAN_AUTO; 8146 } 8147 } 8148 } 8149 8150 /* Select main fan on X60/X61, NOOP on others */ 8151 static bool fan_select_fan1(void) 8152 { 8153 if (tp_features.second_fan) { 8154 u8 val; 8155 8156 if (ec_read(fan_select_offset, &val) < 0) 8157 return false; 8158 val &= 0xFEU; 8159 if (ec_write(fan_select_offset, val) < 0) 8160 return false; 8161 } 8162 return true; 8163 } 8164 8165 /* Select secondary fan on X60/X61 */ 8166 static bool fan_select_fan2(void) 8167 { 8168 u8 val; 8169 8170 if (!tp_features.second_fan) 8171 return false; 8172 8173 if (ec_read(fan_select_offset, &val) < 0) 8174 return false; 8175 val |= 0x01U; 8176 if (ec_write(fan_select_offset, val) < 0) 8177 return false; 8178 8179 return true; 8180 } 8181 8182 /* 8183 * Call with fan_mutex held 8184 */ 8185 static void fan_update_desired_level(u8 status) 8186 { 8187 if ((status & 8188 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8189 if (status > 7) 8190 fan_control_desired_level = 7; 8191 else 8192 fan_control_desired_level = status; 8193 } 8194 } 8195 8196 static int fan_get_status(u8 *status) 8197 { 8198 u8 s; 8199 8200 /* TODO: 8201 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8202 8203 switch (fan_status_access_mode) { 8204 case TPACPI_FAN_RD_ACPI_GFAN: { 8205 /* 570, 600e/x, 770e, 770x */ 8206 int res; 8207 8208 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8209 return -EIO; 8210 8211 if (likely(status)) 8212 *status = res & 0x07; 8213 8214 break; 8215 } 8216 case TPACPI_FAN_RD_TPEC: 8217 /* all except 570, 600e/x, 770e, 770x */ 8218 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8219 return -EIO; 8220 8221 if (likely(status)) { 8222 *status = s; 8223 fan_quirk1_handle(status); 8224 } 8225 8226 break; 8227 8228 default: 8229 return -ENXIO; 8230 } 8231 8232 return 0; 8233 } 8234 8235 static int fan_get_status_safe(u8 *status) 8236 { 8237 int rc; 8238 u8 s; 8239 8240 if (mutex_lock_killable(&fan_mutex)) 8241 return -ERESTARTSYS; 8242 rc = fan_get_status(&s); 8243 if (!rc) 8244 fan_update_desired_level(s); 8245 mutex_unlock(&fan_mutex); 8246 8247 if (rc) 8248 return rc; 8249 if (status) 8250 *status = s; 8251 8252 return 0; 8253 } 8254 8255 static int fan_get_speed(unsigned int *speed) 8256 { 8257 u8 hi, lo; 8258 8259 switch (fan_status_access_mode) { 8260 case TPACPI_FAN_RD_TPEC: 8261 /* all except 570, 600e/x, 770e, 770x */ 8262 if (unlikely(!fan_select_fan1())) 8263 return -EIO; 8264 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8265 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8266 return -EIO; 8267 8268 if (likely(speed)) 8269 *speed = (hi << 8) | lo; 8270 8271 break; 8272 8273 default: 8274 return -ENXIO; 8275 } 8276 8277 return 0; 8278 } 8279 8280 static int fan2_get_speed(unsigned int *speed) 8281 { 8282 u8 hi, lo; 8283 bool rc; 8284 8285 switch (fan_status_access_mode) { 8286 case TPACPI_FAN_RD_TPEC: 8287 /* all except 570, 600e/x, 770e, 770x */ 8288 if (unlikely(!fan_select_fan2())) 8289 return -EIO; 8290 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8291 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8292 fan_select_fan1(); /* play it safe */ 8293 if (rc) 8294 return -EIO; 8295 8296 if (likely(speed)) 8297 *speed = (hi << 8) | lo; 8298 8299 break; 8300 8301 default: 8302 return -ENXIO; 8303 } 8304 8305 return 0; 8306 } 8307 8308 static int fan_set_level(int level) 8309 { 8310 if (!fan_control_allowed) 8311 return -EPERM; 8312 8313 switch (fan_control_access_mode) { 8314 case TPACPI_FAN_WR_ACPI_SFAN: 8315 if ((level < 0) || (level > 7)) 8316 return -EINVAL; 8317 8318 if (tp_features.second_fan_ctl) { 8319 if (!fan_select_fan2() || 8320 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8321 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8322 tp_features.second_fan_ctl = 0; 8323 } 8324 fan_select_fan1(); 8325 } 8326 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8327 return -EIO; 8328 break; 8329 8330 case TPACPI_FAN_WR_ACPI_FANS: 8331 case TPACPI_FAN_WR_TPEC: 8332 if (!(level & TP_EC_FAN_AUTO) && 8333 !(level & TP_EC_FAN_FULLSPEED) && 8334 ((level < 0) || (level > 7))) 8335 return -EINVAL; 8336 8337 /* safety net should the EC not support AUTO 8338 * or FULLSPEED mode bits and just ignore them */ 8339 if (level & TP_EC_FAN_FULLSPEED) 8340 level |= 7; /* safety min speed 7 */ 8341 else if (level & TP_EC_FAN_AUTO) 8342 level |= 4; /* safety min speed 4 */ 8343 8344 if (tp_features.second_fan_ctl) { 8345 if (!fan_select_fan2() || 8346 !acpi_ec_write(fan_status_offset, level)) { 8347 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8348 tp_features.second_fan_ctl = 0; 8349 } 8350 fan_select_fan1(); 8351 8352 } 8353 if (!acpi_ec_write(fan_status_offset, level)) 8354 return -EIO; 8355 else 8356 tp_features.fan_ctrl_status_undef = 0; 8357 break; 8358 8359 default: 8360 return -ENXIO; 8361 } 8362 8363 vdbg_printk(TPACPI_DBG_FAN, 8364 "fan control: set fan control register to 0x%02x\n", level); 8365 return 0; 8366 } 8367 8368 static int fan_set_level_safe(int level) 8369 { 8370 int rc; 8371 8372 if (!fan_control_allowed) 8373 return -EPERM; 8374 8375 if (mutex_lock_killable(&fan_mutex)) 8376 return -ERESTARTSYS; 8377 8378 if (level == TPACPI_FAN_LAST_LEVEL) 8379 level = fan_control_desired_level; 8380 8381 rc = fan_set_level(level); 8382 if (!rc) 8383 fan_update_desired_level(level); 8384 8385 mutex_unlock(&fan_mutex); 8386 return rc; 8387 } 8388 8389 static int fan_set_enable(void) 8390 { 8391 u8 s; 8392 int rc; 8393 8394 if (!fan_control_allowed) 8395 return -EPERM; 8396 8397 if (mutex_lock_killable(&fan_mutex)) 8398 return -ERESTARTSYS; 8399 8400 switch (fan_control_access_mode) { 8401 case TPACPI_FAN_WR_ACPI_FANS: 8402 case TPACPI_FAN_WR_TPEC: 8403 rc = fan_get_status(&s); 8404 if (rc < 0) 8405 break; 8406 8407 /* Don't go out of emergency fan mode */ 8408 if (s != 7) { 8409 s &= 0x07; 8410 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8411 } 8412 8413 if (!acpi_ec_write(fan_status_offset, s)) 8414 rc = -EIO; 8415 else { 8416 tp_features.fan_ctrl_status_undef = 0; 8417 rc = 0; 8418 } 8419 break; 8420 8421 case TPACPI_FAN_WR_ACPI_SFAN: 8422 rc = fan_get_status(&s); 8423 if (rc < 0) 8424 break; 8425 8426 s &= 0x07; 8427 8428 /* Set fan to at least level 4 */ 8429 s |= 4; 8430 8431 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8432 rc = -EIO; 8433 else 8434 rc = 0; 8435 break; 8436 8437 default: 8438 rc = -ENXIO; 8439 } 8440 8441 mutex_unlock(&fan_mutex); 8442 8443 if (!rc) 8444 vdbg_printk(TPACPI_DBG_FAN, 8445 "fan control: set fan control register to 0x%02x\n", 8446 s); 8447 return rc; 8448 } 8449 8450 static int fan_set_disable(void) 8451 { 8452 int rc; 8453 8454 if (!fan_control_allowed) 8455 return -EPERM; 8456 8457 if (mutex_lock_killable(&fan_mutex)) 8458 return -ERESTARTSYS; 8459 8460 rc = 0; 8461 switch (fan_control_access_mode) { 8462 case TPACPI_FAN_WR_ACPI_FANS: 8463 case TPACPI_FAN_WR_TPEC: 8464 if (!acpi_ec_write(fan_status_offset, 0x00)) 8465 rc = -EIO; 8466 else { 8467 fan_control_desired_level = 0; 8468 tp_features.fan_ctrl_status_undef = 0; 8469 } 8470 break; 8471 8472 case TPACPI_FAN_WR_ACPI_SFAN: 8473 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8474 rc = -EIO; 8475 else 8476 fan_control_desired_level = 0; 8477 break; 8478 8479 default: 8480 rc = -ENXIO; 8481 } 8482 8483 if (!rc) 8484 vdbg_printk(TPACPI_DBG_FAN, 8485 "fan control: set fan control register to 0\n"); 8486 8487 mutex_unlock(&fan_mutex); 8488 return rc; 8489 } 8490 8491 static int fan_set_speed(int speed) 8492 { 8493 int rc; 8494 8495 if (!fan_control_allowed) 8496 return -EPERM; 8497 8498 if (mutex_lock_killable(&fan_mutex)) 8499 return -ERESTARTSYS; 8500 8501 rc = 0; 8502 switch (fan_control_access_mode) { 8503 case TPACPI_FAN_WR_ACPI_FANS: 8504 if (speed >= 0 && speed <= 65535) { 8505 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8506 speed, speed, speed)) 8507 rc = -EIO; 8508 } else 8509 rc = -EINVAL; 8510 break; 8511 8512 default: 8513 rc = -ENXIO; 8514 } 8515 8516 mutex_unlock(&fan_mutex); 8517 return rc; 8518 } 8519 8520 static void fan_watchdog_reset(void) 8521 { 8522 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8523 return; 8524 8525 if (fan_watchdog_maxinterval > 0 && 8526 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8527 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8528 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8529 else 8530 cancel_delayed_work(&fan_watchdog_task); 8531 } 8532 8533 static void fan_watchdog_fire(struct work_struct *ignored) 8534 { 8535 int rc; 8536 8537 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8538 return; 8539 8540 pr_notice("fan watchdog: enabling fan\n"); 8541 rc = fan_set_enable(); 8542 if (rc < 0) { 8543 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8544 rc); 8545 /* reschedule for later */ 8546 fan_watchdog_reset(); 8547 } 8548 } 8549 8550 /* 8551 * SYSFS fan layout: hwmon compatible (device) 8552 * 8553 * pwm*_enable: 8554 * 0: "disengaged" mode 8555 * 1: manual mode 8556 * 2: native EC "auto" mode (recommended, hardware default) 8557 * 8558 * pwm*: set speed in manual mode, ignored otherwise. 8559 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8560 * interpolation. 8561 * 8562 * fan*_input: tachometer reading, RPM 8563 * 8564 * 8565 * SYSFS fan layout: extensions 8566 * 8567 * fan_watchdog (driver): 8568 * fan watchdog interval in seconds, 0 disables (default), max 120 8569 */ 8570 8571 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8572 static ssize_t fan_pwm1_enable_show(struct device *dev, 8573 struct device_attribute *attr, 8574 char *buf) 8575 { 8576 int res, mode; 8577 u8 status; 8578 8579 res = fan_get_status_safe(&status); 8580 if (res) 8581 return res; 8582 8583 if (status & TP_EC_FAN_FULLSPEED) { 8584 mode = 0; 8585 } else if (status & TP_EC_FAN_AUTO) { 8586 mode = 2; 8587 } else 8588 mode = 1; 8589 8590 return snprintf(buf, PAGE_SIZE, "%d\n", mode); 8591 } 8592 8593 static ssize_t fan_pwm1_enable_store(struct device *dev, 8594 struct device_attribute *attr, 8595 const char *buf, size_t count) 8596 { 8597 unsigned long t; 8598 int res, level; 8599 8600 if (parse_strtoul(buf, 2, &t)) 8601 return -EINVAL; 8602 8603 tpacpi_disclose_usertask("hwmon pwm1_enable", 8604 "set fan mode to %lu\n", t); 8605 8606 switch (t) { 8607 case 0: 8608 level = TP_EC_FAN_FULLSPEED; 8609 break; 8610 case 1: 8611 level = TPACPI_FAN_LAST_LEVEL; 8612 break; 8613 case 2: 8614 level = TP_EC_FAN_AUTO; 8615 break; 8616 case 3: 8617 /* reserved for software-controlled auto mode */ 8618 return -ENOSYS; 8619 default: 8620 return -EINVAL; 8621 } 8622 8623 res = fan_set_level_safe(level); 8624 if (res == -ENXIO) 8625 return -EINVAL; 8626 else if (res < 0) 8627 return res; 8628 8629 fan_watchdog_reset(); 8630 8631 return count; 8632 } 8633 8634 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8635 fan_pwm1_enable_show, fan_pwm1_enable_store); 8636 8637 /* sysfs fan pwm1 ------------------------------------------------------ */ 8638 static ssize_t fan_pwm1_show(struct device *dev, 8639 struct device_attribute *attr, 8640 char *buf) 8641 { 8642 int res; 8643 u8 status; 8644 8645 res = fan_get_status_safe(&status); 8646 if (res) 8647 return res; 8648 8649 if ((status & 8650 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8651 status = fan_control_desired_level; 8652 8653 if (status > 7) 8654 status = 7; 8655 8656 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); 8657 } 8658 8659 static ssize_t fan_pwm1_store(struct device *dev, 8660 struct device_attribute *attr, 8661 const char *buf, size_t count) 8662 { 8663 unsigned long s; 8664 int rc; 8665 u8 status, newlevel; 8666 8667 if (parse_strtoul(buf, 255, &s)) 8668 return -EINVAL; 8669 8670 tpacpi_disclose_usertask("hwmon pwm1", 8671 "set fan speed to %lu\n", s); 8672 8673 /* scale down from 0-255 to 0-7 */ 8674 newlevel = (s >> 5) & 0x07; 8675 8676 if (mutex_lock_killable(&fan_mutex)) 8677 return -ERESTARTSYS; 8678 8679 rc = fan_get_status(&status); 8680 if (!rc && (status & 8681 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8682 rc = fan_set_level(newlevel); 8683 if (rc == -ENXIO) 8684 rc = -EINVAL; 8685 else if (!rc) { 8686 fan_update_desired_level(newlevel); 8687 fan_watchdog_reset(); 8688 } 8689 } 8690 8691 mutex_unlock(&fan_mutex); 8692 return (rc) ? rc : count; 8693 } 8694 8695 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8696 8697 /* sysfs fan fan1_input ------------------------------------------------ */ 8698 static ssize_t fan_fan1_input_show(struct device *dev, 8699 struct device_attribute *attr, 8700 char *buf) 8701 { 8702 int res; 8703 unsigned int speed; 8704 8705 res = fan_get_speed(&speed); 8706 if (res < 0) 8707 return res; 8708 8709 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8710 } 8711 8712 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8713 8714 /* sysfs fan fan2_input ------------------------------------------------ */ 8715 static ssize_t fan_fan2_input_show(struct device *dev, 8716 struct device_attribute *attr, 8717 char *buf) 8718 { 8719 int res; 8720 unsigned int speed; 8721 8722 res = fan2_get_speed(&speed); 8723 if (res < 0) 8724 return res; 8725 8726 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8727 } 8728 8729 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8730 8731 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8732 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8733 { 8734 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); 8735 } 8736 8737 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8738 size_t count) 8739 { 8740 unsigned long t; 8741 8742 if (parse_strtoul(buf, 120, &t)) 8743 return -EINVAL; 8744 8745 if (!fan_control_allowed) 8746 return -EPERM; 8747 8748 fan_watchdog_maxinterval = t; 8749 fan_watchdog_reset(); 8750 8751 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8752 8753 return count; 8754 } 8755 static DRIVER_ATTR_RW(fan_watchdog); 8756 8757 /* --------------------------------------------------------------------- */ 8758 static struct attribute *fan_attributes[] = { 8759 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr, 8760 &dev_attr_fan1_input.attr, 8761 NULL, /* for fan2_input */ 8762 NULL 8763 }; 8764 8765 static const struct attribute_group fan_attr_group = { 8766 .attrs = fan_attributes, 8767 }; 8768 8769 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ 8770 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8771 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8772 8773 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8774 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8775 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8776 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8777 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8778 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8779 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8780 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8781 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8782 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8783 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8784 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8785 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8786 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8787 TPACPI_Q_LNV3('N', '2', 'V', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (3nd gen) */ 8788 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8789 }; 8790 8791 static int __init fan_init(struct ibm_init_struct *iibm) 8792 { 8793 int rc; 8794 unsigned long quirks; 8795 8796 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8797 "initializing fan subdriver\n"); 8798 8799 mutex_init(&fan_mutex); 8800 fan_status_access_mode = TPACPI_FAN_NONE; 8801 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8802 fan_control_commands = 0; 8803 fan_watchdog_maxinterval = 0; 8804 tp_features.fan_ctrl_status_undef = 0; 8805 tp_features.second_fan = 0; 8806 tp_features.second_fan_ctl = 0; 8807 fan_control_desired_level = 7; 8808 8809 if (tpacpi_is_ibm()) { 8810 TPACPI_ACPIHANDLE_INIT(fans); 8811 TPACPI_ACPIHANDLE_INIT(gfan); 8812 TPACPI_ACPIHANDLE_INIT(sfan); 8813 } 8814 8815 quirks = tpacpi_check_quirks(fan_quirk_table, 8816 ARRAY_SIZE(fan_quirk_table)); 8817 8818 if (gfan_handle) { 8819 /* 570, 600e/x, 770e, 770x */ 8820 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8821 } else { 8822 /* all other ThinkPads: note that even old-style 8823 * ThinkPad ECs supports the fan control register */ 8824 if (likely(acpi_ec_read(fan_status_offset, 8825 &fan_control_initial_status))) { 8826 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 8827 if (quirks & TPACPI_FAN_Q1) 8828 fan_quirk1_setup(); 8829 if (quirks & TPACPI_FAN_2FAN) { 8830 tp_features.second_fan = 1; 8831 pr_info("secondary fan support enabled\n"); 8832 } 8833 if (quirks & TPACPI_FAN_2CTL) { 8834 tp_features.second_fan = 1; 8835 tp_features.second_fan_ctl = 1; 8836 pr_info("secondary fan control enabled\n"); 8837 } 8838 } else { 8839 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8840 return 1; 8841 } 8842 } 8843 8844 if (sfan_handle) { 8845 /* 570, 770x-JL */ 8846 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8847 fan_control_commands |= 8848 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8849 } else { 8850 if (!gfan_handle) { 8851 /* gfan without sfan means no fan control */ 8852 /* all other models implement TP EC 0x2f control */ 8853 8854 if (fans_handle) { 8855 /* X31, X40, X41 */ 8856 fan_control_access_mode = 8857 TPACPI_FAN_WR_ACPI_FANS; 8858 fan_control_commands |= 8859 TPACPI_FAN_CMD_SPEED | 8860 TPACPI_FAN_CMD_LEVEL | 8861 TPACPI_FAN_CMD_ENABLE; 8862 } else { 8863 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8864 fan_control_commands |= 8865 TPACPI_FAN_CMD_LEVEL | 8866 TPACPI_FAN_CMD_ENABLE; 8867 } 8868 } 8869 } 8870 8871 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8872 "fan is %s, modes %d, %d\n", 8873 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8874 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8875 fan_status_access_mode, fan_control_access_mode); 8876 8877 /* fan control master switch */ 8878 if (!fan_control_allowed) { 8879 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8880 fan_control_commands = 0; 8881 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8882 "fan control features disabled by parameter\n"); 8883 } 8884 8885 /* update fan_control_desired_level */ 8886 if (fan_status_access_mode != TPACPI_FAN_NONE) 8887 fan_get_status_safe(NULL); 8888 8889 if (fan_status_access_mode != TPACPI_FAN_NONE || 8890 fan_control_access_mode != TPACPI_FAN_WR_NONE) { 8891 if (tp_features.second_fan) { 8892 /* attach second fan tachometer */ 8893 fan_attributes[ARRAY_SIZE(fan_attributes)-2] = 8894 &dev_attr_fan2_input.attr; 8895 } 8896 rc = sysfs_create_group(&tpacpi_hwmon->kobj, 8897 &fan_attr_group); 8898 if (rc < 0) 8899 return rc; 8900 8901 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, 8902 &driver_attr_fan_watchdog); 8903 if (rc < 0) { 8904 sysfs_remove_group(&tpacpi_hwmon->kobj, 8905 &fan_attr_group); 8906 return rc; 8907 } 8908 return 0; 8909 } else 8910 return 1; 8911 } 8912 8913 static void fan_exit(void) 8914 { 8915 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8916 "cancelling any pending fan watchdog tasks\n"); 8917 8918 /* FIXME: can we really do this unconditionally? */ 8919 sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group); 8920 driver_remove_file(&tpacpi_hwmon_pdriver.driver, 8921 &driver_attr_fan_watchdog); 8922 8923 cancel_delayed_work(&fan_watchdog_task); 8924 flush_workqueue(tpacpi_wq); 8925 } 8926 8927 static void fan_suspend(void) 8928 { 8929 int rc; 8930 8931 if (!fan_control_allowed) 8932 return; 8933 8934 /* Store fan status in cache */ 8935 fan_control_resume_level = 0; 8936 rc = fan_get_status_safe(&fan_control_resume_level); 8937 if (rc < 0) 8938 pr_notice("failed to read fan level for later restore during resume: %d\n", 8939 rc); 8940 8941 /* if it is undefined, don't attempt to restore it. 8942 * KEEP THIS LAST */ 8943 if (tp_features.fan_ctrl_status_undef) 8944 fan_control_resume_level = 0; 8945 } 8946 8947 static void fan_resume(void) 8948 { 8949 u8 current_level = 7; 8950 bool do_set = false; 8951 int rc; 8952 8953 /* DSDT *always* updates status on resume */ 8954 tp_features.fan_ctrl_status_undef = 0; 8955 8956 if (!fan_control_allowed || 8957 !fan_control_resume_level || 8958 (fan_get_status_safe(¤t_level) < 0)) 8959 return; 8960 8961 switch (fan_control_access_mode) { 8962 case TPACPI_FAN_WR_ACPI_SFAN: 8963 /* never decrease fan level */ 8964 do_set = (fan_control_resume_level > current_level); 8965 break; 8966 case TPACPI_FAN_WR_ACPI_FANS: 8967 case TPACPI_FAN_WR_TPEC: 8968 /* never decrease fan level, scale is: 8969 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 8970 * 8971 * We expect the firmware to set either 7 or AUTO, but we 8972 * handle FULLSPEED out of paranoia. 8973 * 8974 * So, we can safely only restore FULLSPEED or 7, anything 8975 * else could slow the fan. Restoring AUTO is useless, at 8976 * best that's exactly what the DSDT already set (it is the 8977 * slower it uses). 8978 * 8979 * Always keep in mind that the DSDT *will* have set the 8980 * fans to what the vendor supposes is the best level. We 8981 * muck with it only to speed the fan up. 8982 */ 8983 if (fan_control_resume_level != 7 && 8984 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 8985 return; 8986 else 8987 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 8988 (current_level != fan_control_resume_level); 8989 break; 8990 default: 8991 return; 8992 } 8993 if (do_set) { 8994 pr_notice("restoring fan level to 0x%02x\n", 8995 fan_control_resume_level); 8996 rc = fan_set_level_safe(fan_control_resume_level); 8997 if (rc < 0) 8998 pr_notice("failed to restore fan level: %d\n", rc); 8999 } 9000 } 9001 9002 static int fan_read(struct seq_file *m) 9003 { 9004 int rc; 9005 u8 status; 9006 unsigned int speed = 0; 9007 9008 switch (fan_status_access_mode) { 9009 case TPACPI_FAN_RD_ACPI_GFAN: 9010 /* 570, 600e/x, 770e, 770x */ 9011 rc = fan_get_status_safe(&status); 9012 if (rc < 0) 9013 return rc; 9014 9015 seq_printf(m, "status:\t\t%s\n" 9016 "level:\t\t%d\n", 9017 (status != 0) ? "enabled" : "disabled", status); 9018 break; 9019 9020 case TPACPI_FAN_RD_TPEC: 9021 /* all except 570, 600e/x, 770e, 770x */ 9022 rc = fan_get_status_safe(&status); 9023 if (rc < 0) 9024 return rc; 9025 9026 seq_printf(m, "status:\t\t%s\n", 9027 (status != 0) ? "enabled" : "disabled"); 9028 9029 rc = fan_get_speed(&speed); 9030 if (rc < 0) 9031 return rc; 9032 9033 seq_printf(m, "speed:\t\t%d\n", speed); 9034 9035 if (status & TP_EC_FAN_FULLSPEED) 9036 /* Disengaged mode takes precedence */ 9037 seq_printf(m, "level:\t\tdisengaged\n"); 9038 else if (status & TP_EC_FAN_AUTO) 9039 seq_printf(m, "level:\t\tauto\n"); 9040 else 9041 seq_printf(m, "level:\t\t%d\n", status); 9042 break; 9043 9044 case TPACPI_FAN_NONE: 9045 default: 9046 seq_printf(m, "status:\t\tnot supported\n"); 9047 } 9048 9049 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9050 seq_printf(m, "commands:\tlevel <level>"); 9051 9052 switch (fan_control_access_mode) { 9053 case TPACPI_FAN_WR_ACPI_SFAN: 9054 seq_printf(m, " (<level> is 0-7)\n"); 9055 break; 9056 9057 default: 9058 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9059 break; 9060 } 9061 } 9062 9063 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9064 seq_printf(m, "commands:\tenable, disable\n" 9065 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9066 9067 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9068 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9069 9070 return 0; 9071 } 9072 9073 static int fan_write_cmd_level(const char *cmd, int *rc) 9074 { 9075 int level; 9076 9077 if (strlencmp(cmd, "level auto") == 0) 9078 level = TP_EC_FAN_AUTO; 9079 else if ((strlencmp(cmd, "level disengaged") == 0) | 9080 (strlencmp(cmd, "level full-speed") == 0)) 9081 level = TP_EC_FAN_FULLSPEED; 9082 else if (sscanf(cmd, "level %d", &level) != 1) 9083 return 0; 9084 9085 *rc = fan_set_level_safe(level); 9086 if (*rc == -ENXIO) 9087 pr_err("level command accepted for unsupported access mode %d\n", 9088 fan_control_access_mode); 9089 else if (!*rc) 9090 tpacpi_disclose_usertask("procfs fan", 9091 "set level to %d\n", level); 9092 9093 return 1; 9094 } 9095 9096 static int fan_write_cmd_enable(const char *cmd, int *rc) 9097 { 9098 if (strlencmp(cmd, "enable") != 0) 9099 return 0; 9100 9101 *rc = fan_set_enable(); 9102 if (*rc == -ENXIO) 9103 pr_err("enable command accepted for unsupported access mode %d\n", 9104 fan_control_access_mode); 9105 else if (!*rc) 9106 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9107 9108 return 1; 9109 } 9110 9111 static int fan_write_cmd_disable(const char *cmd, int *rc) 9112 { 9113 if (strlencmp(cmd, "disable") != 0) 9114 return 0; 9115 9116 *rc = fan_set_disable(); 9117 if (*rc == -ENXIO) 9118 pr_err("disable command accepted for unsupported access mode %d\n", 9119 fan_control_access_mode); 9120 else if (!*rc) 9121 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9122 9123 return 1; 9124 } 9125 9126 static int fan_write_cmd_speed(const char *cmd, int *rc) 9127 { 9128 int speed; 9129 9130 /* TODO: 9131 * Support speed <low> <medium> <high> ? */ 9132 9133 if (sscanf(cmd, "speed %d", &speed) != 1) 9134 return 0; 9135 9136 *rc = fan_set_speed(speed); 9137 if (*rc == -ENXIO) 9138 pr_err("speed command accepted for unsupported access mode %d\n", 9139 fan_control_access_mode); 9140 else if (!*rc) 9141 tpacpi_disclose_usertask("procfs fan", 9142 "set speed to %d\n", speed); 9143 9144 return 1; 9145 } 9146 9147 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9148 { 9149 int interval; 9150 9151 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9152 return 0; 9153 9154 if (interval < 0 || interval > 120) 9155 *rc = -EINVAL; 9156 else { 9157 fan_watchdog_maxinterval = interval; 9158 tpacpi_disclose_usertask("procfs fan", 9159 "set watchdog timer to %d\n", 9160 interval); 9161 } 9162 9163 return 1; 9164 } 9165 9166 static int fan_write(char *buf) 9167 { 9168 char *cmd; 9169 int rc = 0; 9170 9171 while (!rc && (cmd = strsep(&buf, ","))) { 9172 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9173 fan_write_cmd_level(cmd, &rc)) && 9174 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9175 (fan_write_cmd_enable(cmd, &rc) || 9176 fan_write_cmd_disable(cmd, &rc) || 9177 fan_write_cmd_watchdog(cmd, &rc))) && 9178 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9179 fan_write_cmd_speed(cmd, &rc)) 9180 ) 9181 rc = -EINVAL; 9182 else if (!rc) 9183 fan_watchdog_reset(); 9184 } 9185 9186 return rc; 9187 } 9188 9189 static struct ibm_struct fan_driver_data = { 9190 .name = "fan", 9191 .read = fan_read, 9192 .write = fan_write, 9193 .exit = fan_exit, 9194 .suspend = fan_suspend, 9195 .resume = fan_resume, 9196 }; 9197 9198 /************************************************************************* 9199 * Mute LED subdriver 9200 */ 9201 9202 #define TPACPI_LED_MAX 2 9203 9204 struct tp_led_table { 9205 acpi_string name; 9206 int on_value; 9207 int off_value; 9208 int state; 9209 }; 9210 9211 static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9212 [LED_AUDIO_MUTE] = { 9213 .name = "SSMS", 9214 .on_value = 1, 9215 .off_value = 0, 9216 }, 9217 [LED_AUDIO_MICMUTE] = { 9218 .name = "MMTS", 9219 .on_value = 2, 9220 .off_value = 0, 9221 }, 9222 }; 9223 9224 static int mute_led_on_off(struct tp_led_table *t, bool state) 9225 { 9226 acpi_handle temp; 9227 int output; 9228 9229 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9230 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9231 return -EIO; 9232 } 9233 9234 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9235 state ? t->on_value : t->off_value)) 9236 return -EIO; 9237 9238 t->state = state; 9239 return state; 9240 } 9241 9242 static int tpacpi_led_set(int whichled, bool on) 9243 { 9244 struct tp_led_table *t; 9245 9246 t = &led_tables[whichled]; 9247 if (t->state < 0 || t->state == on) 9248 return t->state; 9249 return mute_led_on_off(t, on); 9250 } 9251 9252 static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9253 enum led_brightness brightness) 9254 { 9255 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9256 } 9257 9258 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9259 enum led_brightness brightness) 9260 { 9261 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9262 } 9263 9264 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9265 [LED_AUDIO_MUTE] = { 9266 .name = "platform::mute", 9267 .max_brightness = 1, 9268 .brightness_set_blocking = tpacpi_led_mute_set, 9269 .default_trigger = "audio-mute", 9270 }, 9271 [LED_AUDIO_MICMUTE] = { 9272 .name = "platform::micmute", 9273 .max_brightness = 1, 9274 .brightness_set_blocking = tpacpi_led_micmute_set, 9275 .default_trigger = "audio-micmute", 9276 }, 9277 }; 9278 9279 static int mute_led_init(struct ibm_init_struct *iibm) 9280 { 9281 acpi_handle temp; 9282 int i, err; 9283 9284 for (i = 0; i < TPACPI_LED_MAX; i++) { 9285 struct tp_led_table *t = &led_tables[i]; 9286 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9287 t->state = -ENODEV; 9288 continue; 9289 } 9290 9291 mute_led_cdev[i].brightness = ledtrig_audio_get(i); 9292 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9293 if (err < 0) { 9294 while (i--) 9295 led_classdev_unregister(&mute_led_cdev[i]); 9296 return err; 9297 } 9298 } 9299 return 0; 9300 } 9301 9302 static void mute_led_exit(void) 9303 { 9304 int i; 9305 9306 for (i = 0; i < TPACPI_LED_MAX; i++) { 9307 led_classdev_unregister(&mute_led_cdev[i]); 9308 tpacpi_led_set(i, false); 9309 } 9310 } 9311 9312 static void mute_led_resume(void) 9313 { 9314 int i; 9315 9316 for (i = 0; i < TPACPI_LED_MAX; i++) { 9317 struct tp_led_table *t = &led_tables[i]; 9318 if (t->state >= 0) 9319 mute_led_on_off(t, t->state); 9320 } 9321 } 9322 9323 static struct ibm_struct mute_led_driver_data = { 9324 .name = "mute_led", 9325 .exit = mute_led_exit, 9326 .resume = mute_led_resume, 9327 }; 9328 9329 /* 9330 * Battery Wear Control Driver 9331 * Contact: Ognjen Galic <smclt30p@gmail.com> 9332 */ 9333 9334 /* Metadata */ 9335 9336 #define GET_START "BCTG" 9337 #define SET_START "BCCS" 9338 #define GET_STOP "BCSG" 9339 #define SET_STOP "BCSS" 9340 9341 enum { 9342 BAT_ANY = 0, 9343 BAT_PRIMARY = 1, 9344 BAT_SECONDARY = 2 9345 }; 9346 9347 enum { 9348 /* Error condition bit */ 9349 METHOD_ERR = BIT(31), 9350 }; 9351 9352 enum { 9353 /* This is used in the get/set helpers */ 9354 THRESHOLD_START, 9355 THRESHOLD_STOP, 9356 }; 9357 9358 struct tpacpi_battery_data { 9359 int charge_start; 9360 int start_support; 9361 int charge_stop; 9362 int stop_support; 9363 }; 9364 9365 struct tpacpi_battery_driver_data { 9366 struct tpacpi_battery_data batteries[3]; 9367 int individual_addressing; 9368 }; 9369 9370 static struct tpacpi_battery_driver_data battery_info; 9371 9372 /* ACPI helpers/functions/probes */ 9373 9374 /** 9375 * This evaluates a ACPI method call specific to the battery 9376 * ACPI extension. The specifics are that an error is marked 9377 * in the 32rd bit of the response, so we just check that here. 9378 */ 9379 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9380 { 9381 int response; 9382 9383 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9384 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9385 return AE_ERROR; 9386 } 9387 if (response & METHOD_ERR) { 9388 acpi_handle_err(hkey_handle, 9389 "%s evaluated but flagged as error", method); 9390 return AE_ERROR; 9391 } 9392 *ret = response; 9393 return AE_OK; 9394 } 9395 9396 static int tpacpi_battery_get(int what, int battery, int *ret) 9397 { 9398 switch (what) { 9399 case THRESHOLD_START: 9400 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) 9401 return -ENODEV; 9402 9403 /* The value is in the low 8 bits of the response */ 9404 *ret = *ret & 0xFF; 9405 return 0; 9406 case THRESHOLD_STOP: 9407 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) 9408 return -ENODEV; 9409 /* Value is in lower 8 bits */ 9410 *ret = *ret & 0xFF; 9411 /* 9412 * On the stop value, if we return 0 that 9413 * does not make any sense. 0 means Default, which 9414 * means that charging stops at 100%, so we return 9415 * that. 9416 */ 9417 if (*ret == 0) 9418 *ret = 100; 9419 return 0; 9420 default: 9421 pr_crit("wrong parameter: %d", what); 9422 return -EINVAL; 9423 } 9424 } 9425 9426 static int tpacpi_battery_set(int what, int battery, int value) 9427 { 9428 int param, ret; 9429 /* The first 8 bits are the value of the threshold */ 9430 param = value; 9431 /* The battery ID is in bits 8-9, 2 bits */ 9432 param |= battery << 8; 9433 9434 switch (what) { 9435 case THRESHOLD_START: 9436 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9437 pr_err("failed to set charge threshold on battery %d", 9438 battery); 9439 return -ENODEV; 9440 } 9441 return 0; 9442 case THRESHOLD_STOP: 9443 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9444 pr_err("failed to set stop threshold: %d", battery); 9445 return -ENODEV; 9446 } 9447 return 0; 9448 default: 9449 pr_crit("wrong parameter: %d", what); 9450 return -EINVAL; 9451 } 9452 } 9453 9454 static int tpacpi_battery_probe(int battery) 9455 { 9456 int ret = 0; 9457 9458 memset(&battery_info.batteries[battery], 0, 9459 sizeof(battery_info.batteries[battery])); 9460 9461 /* 9462 * 1) Get the current start threshold 9463 * 2) Check for support 9464 * 3) Get the current stop threshold 9465 * 4) Check for support 9466 */ 9467 if (acpi_has_method(hkey_handle, GET_START)) { 9468 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9469 pr_err("Error probing battery %d\n", battery); 9470 return -ENODEV; 9471 } 9472 /* Individual addressing is in bit 9 */ 9473 if (ret & BIT(9)) 9474 battery_info.individual_addressing = true; 9475 /* Support is marked in bit 8 */ 9476 if (ret & BIT(8)) 9477 battery_info.batteries[battery].start_support = 1; 9478 else 9479 return -ENODEV; 9480 if (tpacpi_battery_get(THRESHOLD_START, battery, 9481 &battery_info.batteries[battery].charge_start)) { 9482 pr_err("Error probing battery %d\n", battery); 9483 return -ENODEV; 9484 } 9485 } 9486 if (acpi_has_method(hkey_handle, GET_STOP)) { 9487 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9488 pr_err("Error probing battery stop; %d\n", battery); 9489 return -ENODEV; 9490 } 9491 /* Support is marked in bit 8 */ 9492 if (ret & BIT(8)) 9493 battery_info.batteries[battery].stop_support = 1; 9494 else 9495 return -ENODEV; 9496 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9497 &battery_info.batteries[battery].charge_stop)) { 9498 pr_err("Error probing battery stop: %d\n", battery); 9499 return -ENODEV; 9500 } 9501 } 9502 pr_info("battery %d registered (start %d, stop %d)", 9503 battery, 9504 battery_info.batteries[battery].charge_start, 9505 battery_info.batteries[battery].charge_stop); 9506 9507 return 0; 9508 } 9509 9510 /* General helper functions */ 9511 9512 static int tpacpi_battery_get_id(const char *battery_name) 9513 { 9514 9515 if (strcmp(battery_name, "BAT0") == 0 || 9516 tp_features.battery_force_primary) 9517 return BAT_PRIMARY; 9518 if (strcmp(battery_name, "BAT1") == 0) 9519 return BAT_SECONDARY; 9520 /* 9521 * If for some reason the battery is not BAT0 nor is it 9522 * BAT1, we will assume it's the default, first battery, 9523 * AKA primary. 9524 */ 9525 pr_warn("unknown battery %s, assuming primary", battery_name); 9526 return BAT_PRIMARY; 9527 } 9528 9529 /* sysfs interface */ 9530 9531 static ssize_t tpacpi_battery_store(int what, 9532 struct device *dev, 9533 const char *buf, size_t count) 9534 { 9535 struct power_supply *supply = to_power_supply(dev); 9536 unsigned long value; 9537 int battery, rval; 9538 /* 9539 * Some systems have support for more than 9540 * one battery. If that is the case, 9541 * tpacpi_battery_probe marked that addressing 9542 * them individually is supported, so we do that 9543 * based on the device struct. 9544 * 9545 * On systems that are not supported, we assume 9546 * the primary as most of the ACPI calls fail 9547 * with "Any Battery" as the parameter. 9548 */ 9549 if (battery_info.individual_addressing) 9550 /* BAT_PRIMARY or BAT_SECONDARY */ 9551 battery = tpacpi_battery_get_id(supply->desc->name); 9552 else 9553 battery = BAT_PRIMARY; 9554 9555 rval = kstrtoul(buf, 10, &value); 9556 if (rval) 9557 return rval; 9558 9559 switch (what) { 9560 case THRESHOLD_START: 9561 if (!battery_info.batteries[battery].start_support) 9562 return -ENODEV; 9563 /* valid values are [0, 99] */ 9564 if (value > 99) 9565 return -EINVAL; 9566 if (value > battery_info.batteries[battery].charge_stop) 9567 return -EINVAL; 9568 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9569 return -ENODEV; 9570 battery_info.batteries[battery].charge_start = value; 9571 return count; 9572 9573 case THRESHOLD_STOP: 9574 if (!battery_info.batteries[battery].stop_support) 9575 return -ENODEV; 9576 /* valid values are [1, 100] */ 9577 if (value < 1 || value > 100) 9578 return -EINVAL; 9579 if (value < battery_info.batteries[battery].charge_start) 9580 return -EINVAL; 9581 battery_info.batteries[battery].charge_stop = value; 9582 /* 9583 * When 100 is passed to stop, we need to flip 9584 * it to 0 as that the EC understands that as 9585 * "Default", which will charge to 100% 9586 */ 9587 if (value == 100) 9588 value = 0; 9589 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9590 return -EINVAL; 9591 return count; 9592 default: 9593 pr_crit("Wrong parameter: %d", what); 9594 return -EINVAL; 9595 } 9596 return count; 9597 } 9598 9599 static ssize_t tpacpi_battery_show(int what, 9600 struct device *dev, 9601 char *buf) 9602 { 9603 struct power_supply *supply = to_power_supply(dev); 9604 int ret, battery; 9605 /* 9606 * Some systems have support for more than 9607 * one battery. If that is the case, 9608 * tpacpi_battery_probe marked that addressing 9609 * them individually is supported, so we; 9610 * based on the device struct. 9611 * 9612 * On systems that are not supported, we assume 9613 * the primary as most of the ACPI calls fail 9614 * with "Any Battery" as the parameter. 9615 */ 9616 if (battery_info.individual_addressing) 9617 /* BAT_PRIMARY or BAT_SECONDARY */ 9618 battery = tpacpi_battery_get_id(supply->desc->name); 9619 else 9620 battery = BAT_PRIMARY; 9621 if (tpacpi_battery_get(what, battery, &ret)) 9622 return -ENODEV; 9623 return sprintf(buf, "%d\n", ret); 9624 } 9625 9626 static ssize_t charge_control_start_threshold_show(struct device *device, 9627 struct device_attribute *attr, 9628 char *buf) 9629 { 9630 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9631 } 9632 9633 static ssize_t charge_control_end_threshold_show(struct device *device, 9634 struct device_attribute *attr, 9635 char *buf) 9636 { 9637 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9638 } 9639 9640 static ssize_t charge_control_start_threshold_store(struct device *dev, 9641 struct device_attribute *attr, 9642 const char *buf, size_t count) 9643 { 9644 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9645 } 9646 9647 static ssize_t charge_control_end_threshold_store(struct device *dev, 9648 struct device_attribute *attr, 9649 const char *buf, size_t count) 9650 { 9651 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9652 } 9653 9654 static DEVICE_ATTR_RW(charge_control_start_threshold); 9655 static DEVICE_ATTR_RW(charge_control_end_threshold); 9656 static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9657 charge_start_threshold, 9658 0644, 9659 charge_control_start_threshold_show, 9660 charge_control_start_threshold_store 9661 ); 9662 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9663 charge_stop_threshold, 9664 0644, 9665 charge_control_end_threshold_show, 9666 charge_control_end_threshold_store 9667 ); 9668 9669 static struct attribute *tpacpi_battery_attrs[] = { 9670 &dev_attr_charge_control_start_threshold.attr, 9671 &dev_attr_charge_control_end_threshold.attr, 9672 &dev_attr_charge_start_threshold.attr, 9673 &dev_attr_charge_stop_threshold.attr, 9674 NULL, 9675 }; 9676 9677 ATTRIBUTE_GROUPS(tpacpi_battery); 9678 9679 /* ACPI battery hooking */ 9680 9681 static int tpacpi_battery_add(struct power_supply *battery) 9682 { 9683 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9684 9685 if (tpacpi_battery_probe(batteryid)) 9686 return -ENODEV; 9687 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9688 return -ENODEV; 9689 return 0; 9690 } 9691 9692 static int tpacpi_battery_remove(struct power_supply *battery) 9693 { 9694 device_remove_groups(&battery->dev, tpacpi_battery_groups); 9695 return 0; 9696 } 9697 9698 static struct acpi_battery_hook battery_hook = { 9699 .add_battery = tpacpi_battery_add, 9700 .remove_battery = tpacpi_battery_remove, 9701 .name = "ThinkPad Battery Extension", 9702 }; 9703 9704 /* Subdriver init/exit */ 9705 9706 static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 9707 /* 9708 * Individual addressing is broken on models that expose the 9709 * primary battery as BAT1. 9710 */ 9711 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 9712 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 9713 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 9714 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 9715 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 9716 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 9717 }; 9718 9719 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 9720 { 9721 memset(&battery_info, 0, sizeof(battery_info)); 9722 9723 tp_features.battery_force_primary = tpacpi_check_quirks( 9724 battery_quirk_table, 9725 ARRAY_SIZE(battery_quirk_table)); 9726 9727 battery_hook_register(&battery_hook); 9728 return 0; 9729 } 9730 9731 static void tpacpi_battery_exit(void) 9732 { 9733 battery_hook_unregister(&battery_hook); 9734 } 9735 9736 static struct ibm_struct battery_driver_data = { 9737 .name = "battery", 9738 .exit = tpacpi_battery_exit, 9739 }; 9740 9741 /************************************************************************* 9742 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 9743 */ 9744 9745 static int lcdshadow_state; 9746 9747 static int lcdshadow_on_off(bool state) 9748 { 9749 acpi_handle set_shadow_handle; 9750 int output; 9751 9752 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSSS", &set_shadow_handle))) { 9753 pr_warn("Thinkpad ACPI has no %s interface.\n", "SSSS"); 9754 return -EIO; 9755 } 9756 9757 if (!acpi_evalf(set_shadow_handle, &output, NULL, "dd", (int)state)) 9758 return -EIO; 9759 9760 lcdshadow_state = state; 9761 return 0; 9762 } 9763 9764 static int lcdshadow_set(bool on) 9765 { 9766 if (lcdshadow_state < 0) 9767 return lcdshadow_state; 9768 if (lcdshadow_state == on) 9769 return 0; 9770 return lcdshadow_on_off(on); 9771 } 9772 9773 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 9774 { 9775 acpi_handle get_shadow_handle; 9776 int output; 9777 9778 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSSS", &get_shadow_handle))) { 9779 lcdshadow_state = -ENODEV; 9780 return 0; 9781 } 9782 9783 if (!acpi_evalf(get_shadow_handle, &output, NULL, "dd", 0)) { 9784 lcdshadow_state = -EIO; 9785 return -EIO; 9786 } 9787 if (!(output & 0x10000)) { 9788 lcdshadow_state = -ENODEV; 9789 return 0; 9790 } 9791 lcdshadow_state = output & 0x1; 9792 9793 return 0; 9794 } 9795 9796 static void lcdshadow_resume(void) 9797 { 9798 if (lcdshadow_state >= 0) 9799 lcdshadow_on_off(lcdshadow_state); 9800 } 9801 9802 static int lcdshadow_read(struct seq_file *m) 9803 { 9804 if (lcdshadow_state < 0) { 9805 seq_puts(m, "status:\t\tnot supported\n"); 9806 } else { 9807 seq_printf(m, "status:\t\t%d\n", lcdshadow_state); 9808 seq_puts(m, "commands:\t0, 1\n"); 9809 } 9810 9811 return 0; 9812 } 9813 9814 static int lcdshadow_write(char *buf) 9815 { 9816 char *cmd; 9817 int res, state = -EINVAL; 9818 9819 if (lcdshadow_state < 0) 9820 return -ENODEV; 9821 9822 while ((cmd = strsep(&buf, ","))) { 9823 res = kstrtoint(cmd, 10, &state); 9824 if (res < 0) 9825 return res; 9826 } 9827 9828 if (state >= 2 || state < 0) 9829 return -EINVAL; 9830 9831 return lcdshadow_set(state); 9832 } 9833 9834 static struct ibm_struct lcdshadow_driver_data = { 9835 .name = "lcdshadow", 9836 .resume = lcdshadow_resume, 9837 .read = lcdshadow_read, 9838 .write = lcdshadow_write, 9839 }; 9840 9841 /************************************************************************* 9842 * DYTC subdriver, for the Lenovo lapmode feature 9843 */ 9844 9845 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 9846 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 9847 9848 static bool dytc_lapmode; 9849 9850 static void dytc_lapmode_notify_change(void) 9851 { 9852 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 9853 } 9854 9855 static int dytc_command(int command, int *output) 9856 { 9857 acpi_handle dytc_handle; 9858 9859 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 9860 /* Platform doesn't support DYTC */ 9861 return -ENODEV; 9862 } 9863 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 9864 return -EIO; 9865 return 0; 9866 } 9867 9868 static int dytc_lapmode_get(bool *state) 9869 { 9870 int output, err; 9871 9872 err = dytc_command(DYTC_CMD_GET, &output); 9873 if (err) 9874 return err; 9875 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 9876 return 0; 9877 } 9878 9879 static void dytc_lapmode_refresh(void) 9880 { 9881 bool new_state; 9882 int err; 9883 9884 err = dytc_lapmode_get(&new_state); 9885 if (err || (new_state == dytc_lapmode)) 9886 return; 9887 9888 dytc_lapmode = new_state; 9889 dytc_lapmode_notify_change(); 9890 } 9891 9892 /* sysfs lapmode entry */ 9893 static ssize_t dytc_lapmode_show(struct device *dev, 9894 struct device_attribute *attr, 9895 char *buf) 9896 { 9897 return snprintf(buf, PAGE_SIZE, "%d\n", dytc_lapmode); 9898 } 9899 9900 static DEVICE_ATTR_RO(dytc_lapmode); 9901 9902 static struct attribute *dytc_attributes[] = { 9903 &dev_attr_dytc_lapmode.attr, 9904 NULL, 9905 }; 9906 9907 static const struct attribute_group dytc_attr_group = { 9908 .attrs = dytc_attributes, 9909 }; 9910 9911 static int tpacpi_dytc_init(struct ibm_init_struct *iibm) 9912 { 9913 int err; 9914 9915 err = dytc_lapmode_get(&dytc_lapmode); 9916 /* If support isn't available (ENODEV) then don't return an error 9917 * but just don't create the sysfs group 9918 */ 9919 if (err == -ENODEV) 9920 return 0; 9921 /* For all other errors we can flag the failure */ 9922 if (err) 9923 return err; 9924 9925 /* Platform supports this feature - create the group */ 9926 err = sysfs_create_group(&tpacpi_pdev->dev.kobj, &dytc_attr_group); 9927 return err; 9928 } 9929 9930 static void dytc_exit(void) 9931 { 9932 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &dytc_attr_group); 9933 } 9934 9935 static struct ibm_struct dytc_driver_data = { 9936 .name = "dytc", 9937 .exit = dytc_exit, 9938 }; 9939 9940 /**************************************************************************** 9941 **************************************************************************** 9942 * 9943 * Infrastructure 9944 * 9945 **************************************************************************** 9946 ****************************************************************************/ 9947 9948 /* 9949 * HKEY event callout for other subdrivers go here 9950 * (yes, it is ugly, but it is quick, safe, and gets the job done 9951 */ 9952 static void tpacpi_driver_event(const unsigned int hkey_event) 9953 { 9954 if (ibm_backlight_device) { 9955 switch (hkey_event) { 9956 case TP_HKEY_EV_BRGHT_UP: 9957 case TP_HKEY_EV_BRGHT_DOWN: 9958 tpacpi_brightness_notify_change(); 9959 } 9960 } 9961 if (alsa_card) { 9962 switch (hkey_event) { 9963 case TP_HKEY_EV_VOL_UP: 9964 case TP_HKEY_EV_VOL_DOWN: 9965 case TP_HKEY_EV_VOL_MUTE: 9966 volume_alsa_notify_change(); 9967 } 9968 } 9969 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 9970 enum led_brightness brightness; 9971 9972 mutex_lock(&kbdlight_mutex); 9973 9974 /* 9975 * Check the brightness actually changed, setting the brightness 9976 * through kbdlight_set_level() also triggers this event. 9977 */ 9978 brightness = kbdlight_sysfs_get(NULL); 9979 if (kbdlight_brightness != brightness) { 9980 kbdlight_brightness = brightness; 9981 led_classdev_notify_brightness_hw_changed( 9982 &tpacpi_led_kbdlight.led_classdev, brightness); 9983 } 9984 9985 mutex_unlock(&kbdlight_mutex); 9986 } 9987 9988 if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) 9989 dytc_lapmode_refresh(); 9990 9991 } 9992 9993 static void hotkey_driver_event(const unsigned int scancode) 9994 { 9995 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 9996 } 9997 9998 /* --------------------------------------------------------------------- */ 9999 10000 /* /proc support */ 10001 static struct proc_dir_entry *proc_dir; 10002 10003 /* 10004 * Module and infrastructure proble, init and exit handling 10005 */ 10006 10007 static bool force_load; 10008 10009 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 10010 static const char * __init str_supported(int is_supported) 10011 { 10012 static char text_unsupported[] __initdata = "not supported"; 10013 10014 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 10015 } 10016 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 10017 10018 static void ibm_exit(struct ibm_struct *ibm) 10019 { 10020 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 10021 10022 list_del_init(&ibm->all_drivers); 10023 10024 if (ibm->flags.acpi_notify_installed) { 10025 dbg_printk(TPACPI_DBG_EXIT, 10026 "%s: acpi_remove_notify_handler\n", ibm->name); 10027 BUG_ON(!ibm->acpi); 10028 acpi_remove_notify_handler(*ibm->acpi->handle, 10029 ibm->acpi->type, 10030 dispatch_acpi_notify); 10031 ibm->flags.acpi_notify_installed = 0; 10032 } 10033 10034 if (ibm->flags.proc_created) { 10035 dbg_printk(TPACPI_DBG_EXIT, 10036 "%s: remove_proc_entry\n", ibm->name); 10037 remove_proc_entry(ibm->name, proc_dir); 10038 ibm->flags.proc_created = 0; 10039 } 10040 10041 if (ibm->flags.acpi_driver_registered) { 10042 dbg_printk(TPACPI_DBG_EXIT, 10043 "%s: acpi_bus_unregister_driver\n", ibm->name); 10044 BUG_ON(!ibm->acpi); 10045 acpi_bus_unregister_driver(ibm->acpi->driver); 10046 kfree(ibm->acpi->driver); 10047 ibm->acpi->driver = NULL; 10048 ibm->flags.acpi_driver_registered = 0; 10049 } 10050 10051 if (ibm->flags.init_called && ibm->exit) { 10052 ibm->exit(); 10053 ibm->flags.init_called = 0; 10054 } 10055 10056 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 10057 } 10058 10059 static int __init ibm_init(struct ibm_init_struct *iibm) 10060 { 10061 int ret; 10062 struct ibm_struct *ibm = iibm->data; 10063 struct proc_dir_entry *entry; 10064 10065 BUG_ON(ibm == NULL); 10066 10067 INIT_LIST_HEAD(&ibm->all_drivers); 10068 10069 if (ibm->flags.experimental && !experimental) 10070 return 0; 10071 10072 dbg_printk(TPACPI_DBG_INIT, 10073 "probing for %s\n", ibm->name); 10074 10075 if (iibm->init) { 10076 ret = iibm->init(iibm); 10077 if (ret > 0) 10078 return 0; /* probe failed */ 10079 if (ret) 10080 return ret; 10081 10082 ibm->flags.init_called = 1; 10083 } 10084 10085 if (ibm->acpi) { 10086 if (ibm->acpi->hid) { 10087 ret = register_tpacpi_subdriver(ibm); 10088 if (ret) 10089 goto err_out; 10090 } 10091 10092 if (ibm->acpi->notify) { 10093 ret = setup_acpi_notify(ibm); 10094 if (ret == -ENODEV) { 10095 pr_notice("disabling subdriver %s\n", 10096 ibm->name); 10097 ret = 0; 10098 goto err_out; 10099 } 10100 if (ret < 0) 10101 goto err_out; 10102 } 10103 } 10104 10105 dbg_printk(TPACPI_DBG_INIT, 10106 "%s installed\n", ibm->name); 10107 10108 if (ibm->read) { 10109 umode_t mode = iibm->base_procfs_mode; 10110 10111 if (!mode) 10112 mode = S_IRUGO; 10113 if (ibm->write) 10114 mode |= S_IWUSR; 10115 entry = proc_create_data(ibm->name, mode, proc_dir, 10116 &dispatch_proc_ops, ibm); 10117 if (!entry) { 10118 pr_err("unable to create proc entry %s\n", ibm->name); 10119 ret = -ENODEV; 10120 goto err_out; 10121 } 10122 ibm->flags.proc_created = 1; 10123 } 10124 10125 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 10126 10127 return 0; 10128 10129 err_out: 10130 dbg_printk(TPACPI_DBG_INIT, 10131 "%s: at error exit path with result %d\n", 10132 ibm->name, ret); 10133 10134 ibm_exit(ibm); 10135 return (ret < 0) ? ret : 0; 10136 } 10137 10138 /* Probing */ 10139 10140 static char __init tpacpi_parse_fw_id(const char * const s, 10141 u32 *model, u16 *release) 10142 { 10143 int i; 10144 10145 if (!s || strlen(s) < 8) 10146 goto invalid; 10147 10148 for (i = 0; i < 8; i++) 10149 if (!((s[i] >= '0' && s[i] <= '9') || 10150 (s[i] >= 'A' && s[i] <= 'Z'))) 10151 goto invalid; 10152 10153 /* 10154 * Most models: xxyTkkWW (#.##c) 10155 * Ancient 570/600 and -SL lacks (#.##c) 10156 */ 10157 if (s[3] == 'T' || s[3] == 'N') { 10158 *model = TPID(s[0], s[1]); 10159 *release = TPVER(s[4], s[5]); 10160 return s[2]; 10161 10162 /* New models: xxxyTkkW (#.##c); T550 and some others */ 10163 } else if (s[4] == 'T' || s[4] == 'N') { 10164 *model = TPID3(s[0], s[1], s[2]); 10165 *release = TPVER(s[5], s[6]); 10166 return s[3]; 10167 } 10168 10169 invalid: 10170 return '\0'; 10171 } 10172 10173 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 10174 { 10175 char *ec_fw_string = (char *) private; 10176 const char *dmi_data = (const char *)dm; 10177 /* 10178 * ThinkPad Embedded Controller Program Table on newer models 10179 * 10180 * Offset | Name | Width | Description 10181 * ---------------------------------------------------- 10182 * 0x00 | Type | BYTE | 0x8C 10183 * 0x01 | Length | BYTE | 10184 * 0x02 | Handle | WORD | Varies 10185 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 10186 * 0x0A | OEM struct offset | BYTE | 0x0B 10187 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 10188 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 10189 * 0x0D | ECP version ID | STR ID | 10190 * 0x0E | ECP release date | STR ID | 10191 */ 10192 10193 /* Return if data structure not match */ 10194 if (dm->type != 140 || dm->length < 0x0F || 10195 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 10196 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 10197 dmi_data[0x0C] != 0x01) 10198 return; 10199 10200 /* fwstr is the first 8byte string */ 10201 strncpy(ec_fw_string, dmi_data + 0x0F, 8); 10202 } 10203 10204 /* returns 0 - probe ok, or < 0 - probe error. 10205 * Probe ok doesn't mean thinkpad found. 10206 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 10207 static int __must_check __init get_thinkpad_model_data( 10208 struct thinkpad_id_data *tp) 10209 { 10210 const struct dmi_device *dev = NULL; 10211 char ec_fw_string[18] = {0}; 10212 char const *s; 10213 char t; 10214 10215 if (!tp) 10216 return -EINVAL; 10217 10218 memset(tp, 0, sizeof(*tp)); 10219 10220 if (dmi_name_in_vendors("IBM")) 10221 tp->vendor = PCI_VENDOR_ID_IBM; 10222 else if (dmi_name_in_vendors("LENOVO")) 10223 tp->vendor = PCI_VENDOR_ID_LENOVO; 10224 else 10225 return 0; 10226 10227 s = dmi_get_system_info(DMI_BIOS_VERSION); 10228 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 10229 if (s && !tp->bios_version_str) 10230 return -ENOMEM; 10231 10232 /* Really ancient ThinkPad 240X will fail this, which is fine */ 10233 t = tpacpi_parse_fw_id(tp->bios_version_str, 10234 &tp->bios_model, &tp->bios_release); 10235 if (t != 'E' && t != 'C') 10236 return 0; 10237 10238 /* 10239 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 10240 * X32 or newer, all Z series; Some models must have an 10241 * up-to-date BIOS or they will not be detected. 10242 * 10243 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 10244 */ 10245 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 10246 if (sscanf(dev->name, 10247 "IBM ThinkPad Embedded Controller -[%17c", 10248 ec_fw_string) == 1) { 10249 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 10250 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 10251 break; 10252 } 10253 } 10254 10255 /* Newer ThinkPads have different EC program info table */ 10256 if (!ec_fw_string[0]) 10257 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 10258 10259 if (ec_fw_string[0]) { 10260 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 10261 if (!tp->ec_version_str) 10262 return -ENOMEM; 10263 10264 t = tpacpi_parse_fw_id(ec_fw_string, 10265 &tp->ec_model, &tp->ec_release); 10266 if (t != 'H') { 10267 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 10268 ec_fw_string); 10269 pr_notice("please report this to %s\n", TPACPI_MAIL); 10270 } 10271 } 10272 10273 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 10274 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 10275 tp->model_str = kstrdup(s, GFP_KERNEL); 10276 if (!tp->model_str) 10277 return -ENOMEM; 10278 } else { 10279 s = dmi_get_system_info(DMI_BIOS_VENDOR); 10280 if (s && !(strncasecmp(s, "Lenovo", 6))) { 10281 tp->model_str = kstrdup(s, GFP_KERNEL); 10282 if (!tp->model_str) 10283 return -ENOMEM; 10284 } 10285 } 10286 10287 s = dmi_get_system_info(DMI_PRODUCT_NAME); 10288 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 10289 if (s && !tp->nummodel_str) 10290 return -ENOMEM; 10291 10292 return 0; 10293 } 10294 10295 static int __init probe_for_thinkpad(void) 10296 { 10297 int is_thinkpad; 10298 10299 if (acpi_disabled) 10300 return -ENODEV; 10301 10302 /* It would be dangerous to run the driver in this case */ 10303 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 10304 return -ENODEV; 10305 10306 /* 10307 * Non-ancient models have better DMI tagging, but very old models 10308 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 10309 */ 10310 is_thinkpad = (thinkpad_id.model_str != NULL) || 10311 (thinkpad_id.ec_model != 0) || 10312 tpacpi_is_fw_known(); 10313 10314 /* The EC handler is required */ 10315 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 10316 if (!ec_handle) { 10317 if (is_thinkpad) 10318 pr_err("Not yet supported ThinkPad detected!\n"); 10319 return -ENODEV; 10320 } 10321 10322 if (!is_thinkpad && !force_load) 10323 return -ENODEV; 10324 10325 return 0; 10326 } 10327 10328 static void __init thinkpad_acpi_init_banner(void) 10329 { 10330 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 10331 pr_info("%s\n", TPACPI_URL); 10332 10333 pr_info("ThinkPad BIOS %s, EC %s\n", 10334 (thinkpad_id.bios_version_str) ? 10335 thinkpad_id.bios_version_str : "unknown", 10336 (thinkpad_id.ec_version_str) ? 10337 thinkpad_id.ec_version_str : "unknown"); 10338 10339 BUG_ON(!thinkpad_id.vendor); 10340 10341 if (thinkpad_id.model_str) 10342 pr_info("%s %s, model %s\n", 10343 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 10344 "IBM" : ((thinkpad_id.vendor == 10345 PCI_VENDOR_ID_LENOVO) ? 10346 "Lenovo" : "Unknown vendor"), 10347 thinkpad_id.model_str, 10348 (thinkpad_id.nummodel_str) ? 10349 thinkpad_id.nummodel_str : "unknown"); 10350 } 10351 10352 /* Module init, exit, parameters */ 10353 10354 static struct ibm_init_struct ibms_init[] __initdata = { 10355 { 10356 .data = &thinkpad_acpi_driver_data, 10357 }, 10358 { 10359 .init = hotkey_init, 10360 .data = &hotkey_driver_data, 10361 }, 10362 { 10363 .init = bluetooth_init, 10364 .data = &bluetooth_driver_data, 10365 }, 10366 { 10367 .init = wan_init, 10368 .data = &wan_driver_data, 10369 }, 10370 { 10371 .init = uwb_init, 10372 .data = &uwb_driver_data, 10373 }, 10374 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 10375 { 10376 .init = video_init, 10377 .base_procfs_mode = S_IRUSR, 10378 .data = &video_driver_data, 10379 }, 10380 #endif 10381 { 10382 .init = kbdlight_init, 10383 .data = &kbdlight_driver_data, 10384 }, 10385 { 10386 .init = light_init, 10387 .data = &light_driver_data, 10388 }, 10389 { 10390 .init = cmos_init, 10391 .data = &cmos_driver_data, 10392 }, 10393 { 10394 .init = led_init, 10395 .data = &led_driver_data, 10396 }, 10397 { 10398 .init = beep_init, 10399 .data = &beep_driver_data, 10400 }, 10401 { 10402 .init = thermal_init, 10403 .data = &thermal_driver_data, 10404 }, 10405 { 10406 .init = brightness_init, 10407 .data = &brightness_driver_data, 10408 }, 10409 { 10410 .init = volume_init, 10411 .data = &volume_driver_data, 10412 }, 10413 { 10414 .init = fan_init, 10415 .data = &fan_driver_data, 10416 }, 10417 { 10418 .init = mute_led_init, 10419 .data = &mute_led_driver_data, 10420 }, 10421 { 10422 .init = tpacpi_battery_init, 10423 .data = &battery_driver_data, 10424 }, 10425 { 10426 .init = tpacpi_lcdshadow_init, 10427 .data = &lcdshadow_driver_data, 10428 }, 10429 { 10430 .init = tpacpi_dytc_init, 10431 .data = &dytc_driver_data, 10432 }, 10433 }; 10434 10435 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 10436 { 10437 unsigned int i; 10438 struct ibm_struct *ibm; 10439 10440 if (!kp || !kp->name || !val) 10441 return -EINVAL; 10442 10443 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 10444 ibm = ibms_init[i].data; 10445 WARN_ON(ibm == NULL); 10446 10447 if (!ibm || !ibm->name) 10448 continue; 10449 10450 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 10451 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 10452 return -ENOSPC; 10453 strcpy(ibms_init[i].param, val); 10454 return 0; 10455 } 10456 } 10457 10458 return -EINVAL; 10459 } 10460 10461 module_param(experimental, int, 0444); 10462 MODULE_PARM_DESC(experimental, 10463 "Enables experimental features when non-zero"); 10464 10465 module_param_named(debug, dbg_level, uint, 0); 10466 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 10467 10468 module_param(force_load, bool, 0444); 10469 MODULE_PARM_DESC(force_load, 10470 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 10471 10472 module_param_named(fan_control, fan_control_allowed, bool, 0444); 10473 MODULE_PARM_DESC(fan_control, 10474 "Enables setting fan parameters features when true"); 10475 10476 module_param_named(brightness_mode, brightness_mode, uint, 0444); 10477 MODULE_PARM_DESC(brightness_mode, 10478 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 10479 10480 module_param(brightness_enable, uint, 0444); 10481 MODULE_PARM_DESC(brightness_enable, 10482 "Enables backlight control when 1, disables when 0"); 10483 10484 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 10485 module_param_named(volume_mode, volume_mode, uint, 0444); 10486 MODULE_PARM_DESC(volume_mode, 10487 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 10488 10489 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 10490 MODULE_PARM_DESC(volume_capabilities, 10491 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 10492 10493 module_param_named(volume_control, volume_control_allowed, bool, 0444); 10494 MODULE_PARM_DESC(volume_control, 10495 "Enables software override for the console audio control when true"); 10496 10497 module_param_named(software_mute, software_mute_requested, bool, 0444); 10498 MODULE_PARM_DESC(software_mute, 10499 "Request full software mute control"); 10500 10501 /* ALSA module API parameters */ 10502 module_param_named(index, alsa_index, int, 0444); 10503 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 10504 module_param_named(id, alsa_id, charp, 0444); 10505 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 10506 module_param_named(enable, alsa_enable, bool, 0444); 10507 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 10508 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 10509 10510 /* The module parameter can't be read back, that's why 0 is used here */ 10511 #define TPACPI_PARAM(feature) \ 10512 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 10513 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 10514 10515 TPACPI_PARAM(hotkey); 10516 TPACPI_PARAM(bluetooth); 10517 TPACPI_PARAM(video); 10518 TPACPI_PARAM(light); 10519 TPACPI_PARAM(cmos); 10520 TPACPI_PARAM(led); 10521 TPACPI_PARAM(beep); 10522 TPACPI_PARAM(brightness); 10523 TPACPI_PARAM(volume); 10524 TPACPI_PARAM(fan); 10525 10526 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 10527 module_param(dbg_wlswemul, uint, 0444); 10528 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 10529 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 10530 MODULE_PARM_DESC(wlsw_state, 10531 "Initial state of the emulated WLSW switch"); 10532 10533 module_param(dbg_bluetoothemul, uint, 0444); 10534 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 10535 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 10536 MODULE_PARM_DESC(bluetooth_state, 10537 "Initial state of the emulated bluetooth switch"); 10538 10539 module_param(dbg_wwanemul, uint, 0444); 10540 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 10541 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 10542 MODULE_PARM_DESC(wwan_state, 10543 "Initial state of the emulated WWAN switch"); 10544 10545 module_param(dbg_uwbemul, uint, 0444); 10546 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 10547 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 10548 MODULE_PARM_DESC(uwb_state, 10549 "Initial state of the emulated UWB switch"); 10550 #endif 10551 10552 static void thinkpad_acpi_module_exit(void) 10553 { 10554 struct ibm_struct *ibm, *itmp; 10555 10556 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 10557 10558 list_for_each_entry_safe_reverse(ibm, itmp, 10559 &tpacpi_all_drivers, 10560 all_drivers) { 10561 ibm_exit(ibm); 10562 } 10563 10564 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 10565 10566 if (tpacpi_inputdev) { 10567 if (tp_features.input_device_registered) 10568 input_unregister_device(tpacpi_inputdev); 10569 else 10570 input_free_device(tpacpi_inputdev); 10571 kfree(hotkey_keycode_map); 10572 } 10573 10574 if (tpacpi_hwmon) 10575 hwmon_device_unregister(tpacpi_hwmon); 10576 10577 if (tpacpi_sensors_pdev) 10578 platform_device_unregister(tpacpi_sensors_pdev); 10579 if (tpacpi_pdev) 10580 platform_device_unregister(tpacpi_pdev); 10581 10582 if (tp_features.sensors_pdrv_attrs_registered) 10583 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); 10584 if (tp_features.platform_drv_attrs_registered) 10585 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); 10586 10587 if (tp_features.sensors_pdrv_registered) 10588 platform_driver_unregister(&tpacpi_hwmon_pdriver); 10589 10590 if (tp_features.platform_drv_registered) 10591 platform_driver_unregister(&tpacpi_pdriver); 10592 10593 if (proc_dir) 10594 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 10595 10596 if (tpacpi_wq) 10597 destroy_workqueue(tpacpi_wq); 10598 10599 kfree(thinkpad_id.bios_version_str); 10600 kfree(thinkpad_id.ec_version_str); 10601 kfree(thinkpad_id.model_str); 10602 kfree(thinkpad_id.nummodel_str); 10603 } 10604 10605 10606 static int __init thinkpad_acpi_module_init(void) 10607 { 10608 int ret, i; 10609 10610 tpacpi_lifecycle = TPACPI_LIFE_INIT; 10611 10612 /* Driver-level probe */ 10613 10614 ret = get_thinkpad_model_data(&thinkpad_id); 10615 if (ret) { 10616 pr_err("unable to get DMI data: %d\n", ret); 10617 thinkpad_acpi_module_exit(); 10618 return ret; 10619 } 10620 ret = probe_for_thinkpad(); 10621 if (ret) { 10622 thinkpad_acpi_module_exit(); 10623 return ret; 10624 } 10625 10626 /* Driver initialization */ 10627 10628 thinkpad_acpi_init_banner(); 10629 tpacpi_check_outdated_fw(); 10630 10631 TPACPI_ACPIHANDLE_INIT(ecrd); 10632 TPACPI_ACPIHANDLE_INIT(ecwr); 10633 10634 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 10635 if (!tpacpi_wq) { 10636 thinkpad_acpi_module_exit(); 10637 return -ENOMEM; 10638 } 10639 10640 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 10641 if (!proc_dir) { 10642 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 10643 thinkpad_acpi_module_exit(); 10644 return -ENODEV; 10645 } 10646 10647 ret = platform_driver_register(&tpacpi_pdriver); 10648 if (ret) { 10649 pr_err("unable to register main platform driver\n"); 10650 thinkpad_acpi_module_exit(); 10651 return ret; 10652 } 10653 tp_features.platform_drv_registered = 1; 10654 10655 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 10656 if (ret) { 10657 pr_err("unable to register hwmon platform driver\n"); 10658 thinkpad_acpi_module_exit(); 10659 return ret; 10660 } 10661 tp_features.sensors_pdrv_registered = 1; 10662 10663 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); 10664 if (!ret) { 10665 tp_features.platform_drv_attrs_registered = 1; 10666 ret = tpacpi_create_driver_attributes( 10667 &tpacpi_hwmon_pdriver.driver); 10668 } 10669 if (ret) { 10670 pr_err("unable to create sysfs driver attributes\n"); 10671 thinkpad_acpi_module_exit(); 10672 return ret; 10673 } 10674 tp_features.sensors_pdrv_attrs_registered = 1; 10675 10676 10677 /* Device initialization */ 10678 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 10679 NULL, 0); 10680 if (IS_ERR(tpacpi_pdev)) { 10681 ret = PTR_ERR(tpacpi_pdev); 10682 tpacpi_pdev = NULL; 10683 pr_err("unable to register platform device\n"); 10684 thinkpad_acpi_module_exit(); 10685 return ret; 10686 } 10687 tpacpi_sensors_pdev = platform_device_register_simple( 10688 TPACPI_HWMON_DRVR_NAME, 10689 -1, NULL, 0); 10690 if (IS_ERR(tpacpi_sensors_pdev)) { 10691 ret = PTR_ERR(tpacpi_sensors_pdev); 10692 tpacpi_sensors_pdev = NULL; 10693 pr_err("unable to register hwmon platform device\n"); 10694 thinkpad_acpi_module_exit(); 10695 return ret; 10696 } 10697 tp_features.sensors_pdev_attrs_registered = 1; 10698 tpacpi_hwmon = hwmon_device_register_with_groups( 10699 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL); 10700 10701 if (IS_ERR(tpacpi_hwmon)) { 10702 ret = PTR_ERR(tpacpi_hwmon); 10703 tpacpi_hwmon = NULL; 10704 pr_err("unable to register hwmon device\n"); 10705 thinkpad_acpi_module_exit(); 10706 return ret; 10707 } 10708 mutex_init(&tpacpi_inputdev_send_mutex); 10709 tpacpi_inputdev = input_allocate_device(); 10710 if (!tpacpi_inputdev) { 10711 thinkpad_acpi_module_exit(); 10712 return -ENOMEM; 10713 } else { 10714 /* Prepare input device, but don't register */ 10715 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 10716 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 10717 tpacpi_inputdev->id.bustype = BUS_HOST; 10718 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 10719 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 10720 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 10721 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 10722 } 10723 10724 /* Init subdriver dependencies */ 10725 tpacpi_detect_brightness_capabilities(); 10726 10727 /* Init subdrivers */ 10728 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 10729 ret = ibm_init(&ibms_init[i]); 10730 if (ret >= 0 && *ibms_init[i].param) 10731 ret = ibms_init[i].data->write(ibms_init[i].param); 10732 if (ret < 0) { 10733 thinkpad_acpi_module_exit(); 10734 return ret; 10735 } 10736 } 10737 10738 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 10739 10740 ret = input_register_device(tpacpi_inputdev); 10741 if (ret < 0) { 10742 pr_err("unable to register input device\n"); 10743 thinkpad_acpi_module_exit(); 10744 return ret; 10745 } else { 10746 tp_features.input_device_registered = 1; 10747 } 10748 10749 return 0; 10750 } 10751 10752 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 10753 10754 /* 10755 * This will autoload the driver in almost every ThinkPad 10756 * in widespread use. 10757 * 10758 * Only _VERY_ old models, like the 240, 240x and 570 lack 10759 * the HKEY event interface. 10760 */ 10761 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 10762 10763 /* 10764 * DMI matching for module autoloading 10765 * 10766 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 10767 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 10768 * 10769 * Only models listed in thinkwiki will be supported, so add yours 10770 * if it is not there yet. 10771 */ 10772 #define IBM_BIOS_MODULE_ALIAS(__type) \ 10773 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 10774 10775 /* Ancient thinkpad BIOSes have to be identified by 10776 * BIOS type or model number, and there are far less 10777 * BIOS types than model numbers... */ 10778 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 10779 10780 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 10781 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 10782 MODULE_DESCRIPTION(TPACPI_DESC); 10783 MODULE_VERSION(TPACPI_VERSION); 10784 MODULE_LICENSE("GPL"); 10785 10786 module_init(thinkpad_acpi_module_init); 10787 module_exit(thinkpad_acpi_module_exit); 10788