1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * thinkpad_acpi.c - ThinkPad ACPI Extras 4 * 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> 7 */ 8 9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 10 11 #define TPACPI_VERSION "0.26" 12 #define TPACPI_SYSFS_VERSION 0x030000 13 14 /* 15 * Changelog: 16 * 2007-10-20 changelog trimmed down 17 * 18 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to 19 * drivers/misc. 20 * 21 * 2006-11-22 0.13 new maintainer 22 * changelog now lives in git commit history, and will 23 * not be updated further in-file. 24 * 25 * 2005-03-17 0.11 support for 600e, 770x 26 * thanks to Jamie Lentin <lentinj@dial.pipex.com> 27 * 28 * 2005-01-16 0.9 use MODULE_VERSION 29 * thanks to Henrik Brix Andersen <brix@gentoo.org> 30 * fix parameter passing on module loading 31 * thanks to Rusty Russell <rusty@rustcorp.com.au> 32 * thanks to Jim Radford <radford@blackbean.org> 33 * 2004-11-08 0.8 fix init error case, don't return from a macro 34 * thanks to Chris Wright <chrisw@osdl.org> 35 */ 36 37 #include <linux/kernel.h> 38 #include <linux/module.h> 39 #include <linux/init.h> 40 #include <linux/types.h> 41 #include <linux/string.h> 42 #include <linux/list.h> 43 #include <linux/mutex.h> 44 #include <linux/sched.h> 45 #include <linux/sched/signal.h> 46 #include <linux/kthread.h> 47 #include <linux/freezer.h> 48 #include <linux/delay.h> 49 #include <linux/slab.h> 50 #include <linux/nvram.h> 51 #include <linux/proc_fs.h> 52 #include <linux/seq_file.h> 53 #include <linux/sysfs.h> 54 #include <linux/backlight.h> 55 #include <linux/bitops.h> 56 #include <linux/fb.h> 57 #include <linux/platform_device.h> 58 #include <linux/hwmon.h> 59 #include <linux/hwmon-sysfs.h> 60 #include <linux/input.h> 61 #include <linux/leds.h> 62 #include <linux/rfkill.h> 63 #include <linux/dmi.h> 64 #include <linux/jiffies.h> 65 #include <linux/workqueue.h> 66 #include <linux/acpi.h> 67 #include <linux/pci.h> 68 #include <linux/power_supply.h> 69 #include <linux/platform_profile.h> 70 #include <sound/core.h> 71 #include <sound/control.h> 72 #include <sound/initval.h> 73 #include <linux/uaccess.h> 74 #include <acpi/battery.h> 75 #include <acpi/video.h> 76 #include "dual_accel_detect.h" 77 78 /* ThinkPad CMOS commands */ 79 #define TP_CMOS_VOLUME_DOWN 0 80 #define TP_CMOS_VOLUME_UP 1 81 #define TP_CMOS_VOLUME_MUTE 2 82 #define TP_CMOS_BRIGHTNESS_UP 4 83 #define TP_CMOS_BRIGHTNESS_DOWN 5 84 #define TP_CMOS_THINKLIGHT_ON 12 85 #define TP_CMOS_THINKLIGHT_OFF 13 86 87 /* NVRAM Addresses */ 88 enum tp_nvram_addr { 89 TP_NVRAM_ADDR_HK2 = 0x57, 90 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 91 TP_NVRAM_ADDR_VIDEO = 0x59, 92 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 93 TP_NVRAM_ADDR_MIXER = 0x60, 94 }; 95 96 /* NVRAM bit masks */ 97 enum { 98 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 99 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 100 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 101 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 102 TP_NVRAM_MASK_THINKLIGHT = 0x10, 103 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 104 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 105 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 106 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 107 TP_NVRAM_MASK_MUTE = 0x40, 108 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 109 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 110 TP_NVRAM_POS_LEVEL_VOLUME = 0, 111 }; 112 113 /* Misc NVRAM-related */ 114 enum { 115 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 116 }; 117 118 /* ACPI HIDs */ 119 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 120 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 121 #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 122 #define TPACPI_ACPI_EC_HID "PNP0C09" 123 124 /* Input IDs */ 125 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 126 #define TPACPI_HKEY_INPUT_VERSION 0x4101 127 128 /* ACPI \WGSV commands */ 129 enum { 130 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 131 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 132 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 133 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 134 }; 135 136 /* TP_ACPI_WGSV_GET_STATE bits */ 137 enum { 138 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 139 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 140 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 141 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 142 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 143 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 144 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 145 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 146 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 147 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 148 }; 149 150 /* HKEY events */ 151 enum tpacpi_hkey_event_t { 152 /* Hotkey-related */ 153 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ 154 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 155 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 156 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 157 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 158 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 159 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 160 161 /* Reasons for waking up from S3/S4 */ 162 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 163 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 164 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 165 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 166 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 167 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 168 169 /* Auto-sleep after eject request */ 170 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 171 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 172 173 /* Misc bay events */ 174 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 175 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 176 or port replicator */ 177 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 178 dock or port replicator */ 179 /* 180 * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013 181 * when keyboard cover is attached, detached or folded onto the back 182 */ 183 TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */ 184 TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */ 185 186 /* User-interface events */ 187 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 188 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 189 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 190 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 191 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 192 * enter/leave tablet mode 193 */ 194 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 195 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 196 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 197 198 /* Key-related user-interface events */ 199 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 200 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 201 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 202 203 /* Thermal events */ 204 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 205 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 206 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 207 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 208 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ 209 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set 210 * command completed. Related to 211 * AML DYTC */ 212 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation 213 * changed. Related to AML GMTS */ 214 215 /* AC-related events */ 216 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 217 218 /* Further user-interface events */ 219 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ 220 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ 221 222 /* Misc */ 223 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 224 }; 225 226 /**************************************************************************** 227 * Main driver 228 */ 229 230 #define TPACPI_NAME "thinkpad" 231 #define TPACPI_DESC "ThinkPad ACPI Extras" 232 #define TPACPI_FILE TPACPI_NAME "_acpi" 233 #define TPACPI_URL "http://ibm-acpi.sf.net/" 234 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 235 236 #define TPACPI_PROC_DIR "ibm" 237 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 238 #define TPACPI_DRVR_NAME TPACPI_FILE 239 #define TPACPI_DRVR_SHORTNAME "tpacpi" 240 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 241 242 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 243 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 244 245 #define TPACPI_MAX_ACPI_ARGS 3 246 247 /* Debugging printk groups */ 248 #define TPACPI_DBG_ALL 0xffff 249 #define TPACPI_DBG_DISCLOSETASK 0x8000 250 #define TPACPI_DBG_INIT 0x0001 251 #define TPACPI_DBG_EXIT 0x0002 252 #define TPACPI_DBG_RFKILL 0x0004 253 #define TPACPI_DBG_HKEY 0x0008 254 #define TPACPI_DBG_FAN 0x0010 255 #define TPACPI_DBG_BRGHT 0x0020 256 #define TPACPI_DBG_MIXER 0x0040 257 258 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") 259 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") 260 #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) 261 262 263 /**************************************************************************** 264 * Driver-wide structs and misc. variables 265 */ 266 267 struct ibm_struct; 268 269 struct tp_acpi_drv_struct { 270 const struct acpi_device_id *hid; 271 struct acpi_driver *driver; 272 273 void (*notify) (struct ibm_struct *, u32); 274 acpi_handle *handle; 275 u32 type; 276 struct acpi_device *device; 277 }; 278 279 struct ibm_struct { 280 char *name; 281 282 int (*read) (struct seq_file *); 283 int (*write) (char *); 284 void (*exit) (void); 285 void (*resume) (void); 286 void (*suspend) (void); 287 void (*shutdown) (void); 288 289 struct list_head all_drivers; 290 291 struct tp_acpi_drv_struct *acpi; 292 293 struct { 294 u8 acpi_driver_registered:1; 295 u8 acpi_notify_installed:1; 296 u8 proc_created:1; 297 u8 init_called:1; 298 u8 experimental:1; 299 } flags; 300 }; 301 302 struct ibm_init_struct { 303 char param[32]; 304 305 int (*init) (struct ibm_init_struct *); 306 umode_t base_procfs_mode; 307 struct ibm_struct *data; 308 }; 309 310 static struct { 311 u32 bluetooth:1; 312 u32 hotkey:1; 313 u32 hotkey_mask:1; 314 u32 hotkey_wlsw:1; 315 enum { 316 TP_HOTKEY_TABLET_NONE = 0, 317 TP_HOTKEY_TABLET_USES_MHKG, 318 TP_HOTKEY_TABLET_USES_GMMS, 319 } hotkey_tablet; 320 u32 kbdlight:1; 321 u32 light:1; 322 u32 light_status:1; 323 u32 bright_acpimode:1; 324 u32 bright_unkfw:1; 325 u32 wan:1; 326 u32 uwb:1; 327 u32 fan_ctrl_status_undef:1; 328 u32 second_fan:1; 329 u32 second_fan_ctl:1; 330 u32 beep_needs_two_args:1; 331 u32 mixer_no_level_control:1; 332 u32 battery_force_primary:1; 333 u32 input_device_registered:1; 334 u32 platform_drv_registered:1; 335 u32 platform_drv_attrs_registered:1; 336 u32 sensors_pdrv_registered:1; 337 u32 sensors_pdrv_attrs_registered:1; 338 u32 sensors_pdev_attrs_registered:1; 339 u32 hotkey_poll_active:1; 340 u32 has_adaptive_kbd:1; 341 } tp_features; 342 343 static struct { 344 u16 hotkey_mask_ff:1; 345 u16 volume_ctrl_forbidden:1; 346 } tp_warned; 347 348 struct thinkpad_id_data { 349 unsigned int vendor; /* ThinkPad vendor: 350 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 351 352 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 353 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 354 355 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ 356 u32 ec_model; 357 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ 358 u16 ec_release; 359 360 char *model_str; /* ThinkPad T43 */ 361 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 362 }; 363 static struct thinkpad_id_data thinkpad_id; 364 365 static enum { 366 TPACPI_LIFE_INIT = 0, 367 TPACPI_LIFE_RUNNING, 368 TPACPI_LIFE_EXITING, 369 } tpacpi_lifecycle; 370 371 static int experimental; 372 static u32 dbg_level; 373 374 static struct workqueue_struct *tpacpi_wq; 375 376 enum led_status_t { 377 TPACPI_LED_OFF = 0, 378 TPACPI_LED_ON, 379 TPACPI_LED_BLINK, 380 }; 381 382 /* tpacpi LED class */ 383 struct tpacpi_led_classdev { 384 struct led_classdev led_classdev; 385 int led; 386 }; 387 388 /* brightness level capabilities */ 389 static unsigned int bright_maxlvl; /* 0 = unknown */ 390 391 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 392 static int dbg_wlswemul; 393 static bool tpacpi_wlsw_emulstate; 394 static int dbg_bluetoothemul; 395 static bool tpacpi_bluetooth_emulstate; 396 static int dbg_wwanemul; 397 static bool tpacpi_wwan_emulstate; 398 static int dbg_uwbemul; 399 static bool tpacpi_uwb_emulstate; 400 #endif 401 402 403 /************************************************************************* 404 * Debugging helpers 405 */ 406 407 #define dbg_printk(a_dbg_level, format, arg...) \ 408 do { \ 409 if (dbg_level & (a_dbg_level)) \ 410 printk(KERN_DEBUG pr_fmt("%s: " format), \ 411 __func__, ##arg); \ 412 } while (0) 413 414 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 415 #define vdbg_printk dbg_printk 416 static const char *str_supported(int is_supported); 417 #else 418 static inline const char *str_supported(int is_supported) { return ""; } 419 #define vdbg_printk(a_dbg_level, format, arg...) \ 420 do { if (0) no_printk(format, ##arg); } while (0) 421 #endif 422 423 static void tpacpi_log_usertask(const char * const what) 424 { 425 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 426 what, task_tgid_vnr(current)); 427 } 428 429 #define tpacpi_disclose_usertask(what, format, arg...) \ 430 do { \ 431 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 432 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 433 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 434 what, task_tgid_vnr(current), ## arg); \ 435 } \ 436 } while (0) 437 438 /* 439 * Quirk handling helpers 440 * 441 * ThinkPad IDs and versions seen in the field so far are 442 * two or three characters from the set [0-9A-Z], i.e. base 36. 443 * 444 * We use values well outside that range as specials. 445 */ 446 447 #define TPACPI_MATCH_ANY 0xffffffffU 448 #define TPACPI_MATCH_ANY_VERSION 0xffffU 449 #define TPACPI_MATCH_UNKNOWN 0U 450 451 /* TPID('1', 'Y') == 0x3159 */ 452 #define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) 453 #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) 454 #define TPVER TPID 455 456 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 457 { .vendor = PCI_VENDOR_ID_IBM, \ 458 .bios = TPID(__id1, __id2), \ 459 .ec = TPACPI_MATCH_ANY, \ 460 .quirks = (__quirk) } 461 462 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 463 { .vendor = PCI_VENDOR_ID_LENOVO, \ 464 .bios = TPID(__id1, __id2), \ 465 .ec = TPACPI_MATCH_ANY, \ 466 .quirks = (__quirk) } 467 468 #define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ 469 { .vendor = PCI_VENDOR_ID_LENOVO, \ 470 .bios = TPID3(__id1, __id2, __id3), \ 471 .ec = TPACPI_MATCH_ANY, \ 472 .quirks = (__quirk) } 473 474 #define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ 475 { .vendor = PCI_VENDOR_ID_IBM, \ 476 .bios = TPACPI_MATCH_ANY, \ 477 .ec = TPID(__id1, __id2), \ 478 .quirks = (__quirk) } 479 480 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 481 { .vendor = PCI_VENDOR_ID_LENOVO, \ 482 .bios = TPACPI_MATCH_ANY, \ 483 .ec = TPID(__id1, __id2), \ 484 .quirks = (__quirk) } 485 486 struct tpacpi_quirk { 487 unsigned int vendor; 488 u32 bios; 489 u32 ec; 490 unsigned long quirks; 491 }; 492 493 /** 494 * tpacpi_check_quirks() - search BIOS/EC version on a list 495 * @qlist: array of &struct tpacpi_quirk 496 * @qlist_size: number of elements in @qlist 497 * 498 * Iterates over a quirks list until one is found that matches the 499 * ThinkPad's vendor, BIOS and EC model. 500 * 501 * Returns 0 if nothing matches, otherwise returns the quirks field of 502 * the matching &struct tpacpi_quirk entry. 503 * 504 * The match criteria is: vendor, ec and bios much match. 505 */ 506 static unsigned long __init tpacpi_check_quirks( 507 const struct tpacpi_quirk *qlist, 508 unsigned int qlist_size) 509 { 510 while (qlist_size) { 511 if ((qlist->vendor == thinkpad_id.vendor || 512 qlist->vendor == TPACPI_MATCH_ANY) && 513 (qlist->bios == thinkpad_id.bios_model || 514 qlist->bios == TPACPI_MATCH_ANY) && 515 (qlist->ec == thinkpad_id.ec_model || 516 qlist->ec == TPACPI_MATCH_ANY)) 517 return qlist->quirks; 518 519 qlist_size--; 520 qlist++; 521 } 522 return 0; 523 } 524 525 static inline bool __pure __init tpacpi_is_lenovo(void) 526 { 527 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 528 } 529 530 static inline bool __pure __init tpacpi_is_ibm(void) 531 { 532 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 533 } 534 535 /**************************************************************************** 536 **************************************************************************** 537 * 538 * ACPI Helpers and device model 539 * 540 **************************************************************************** 541 ****************************************************************************/ 542 543 /************************************************************************* 544 * ACPI basic handles 545 */ 546 547 static acpi_handle root_handle; 548 static acpi_handle ec_handle; 549 550 #define TPACPI_HANDLE(object, parent, paths...) \ 551 static acpi_handle object##_handle; \ 552 static const acpi_handle * const object##_parent __initconst = \ 553 &parent##_handle; \ 554 static char *object##_paths[] __initdata = { paths } 555 556 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 557 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 558 559 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 560 /* T4x, X31, X40 */ 561 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 562 "\\CMS", /* R40, R40e */ 563 ); /* all others */ 564 565 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 566 "^HKEY", /* R30, R31 */ 567 "HKEY", /* all others */ 568 ); /* 570 */ 569 570 /************************************************************************* 571 * ACPI helpers 572 */ 573 574 static int acpi_evalf(acpi_handle handle, 575 int *res, char *method, char *fmt, ...) 576 { 577 char *fmt0 = fmt; 578 struct acpi_object_list params; 579 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 580 struct acpi_buffer result, *resultp; 581 union acpi_object out_obj; 582 acpi_status status; 583 va_list ap; 584 char res_type; 585 int success; 586 int quiet; 587 588 if (!*fmt) { 589 pr_err("acpi_evalf() called with empty format\n"); 590 return 0; 591 } 592 593 if (*fmt == 'q') { 594 quiet = 1; 595 fmt++; 596 } else 597 quiet = 0; 598 599 res_type = *(fmt++); 600 601 params.count = 0; 602 params.pointer = &in_objs[0]; 603 604 va_start(ap, fmt); 605 while (*fmt) { 606 char c = *(fmt++); 607 switch (c) { 608 case 'd': /* int */ 609 in_objs[params.count].integer.value = va_arg(ap, int); 610 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 611 break; 612 /* add more types as needed */ 613 default: 614 pr_err("acpi_evalf() called with invalid format character '%c'\n", 615 c); 616 va_end(ap); 617 return 0; 618 } 619 } 620 va_end(ap); 621 622 if (res_type != 'v') { 623 result.length = sizeof(out_obj); 624 result.pointer = &out_obj; 625 resultp = &result; 626 } else 627 resultp = NULL; 628 629 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 630 631 switch (res_type) { 632 case 'd': /* int */ 633 success = (status == AE_OK && 634 out_obj.type == ACPI_TYPE_INTEGER); 635 if (success && res) 636 *res = out_obj.integer.value; 637 break; 638 case 'v': /* void */ 639 success = status == AE_OK; 640 break; 641 /* add more types as needed */ 642 default: 643 pr_err("acpi_evalf() called with invalid format character '%c'\n", 644 res_type); 645 return 0; 646 } 647 648 if (!success && !quiet) 649 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 650 method, fmt0, acpi_format_exception(status)); 651 652 return success; 653 } 654 655 static int acpi_ec_read(int i, u8 *p) 656 { 657 int v; 658 659 if (ecrd_handle) { 660 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 661 return 0; 662 *p = v; 663 } else { 664 if (ec_read(i, p) < 0) 665 return 0; 666 } 667 668 return 1; 669 } 670 671 static int acpi_ec_write(int i, u8 v) 672 { 673 if (ecwr_handle) { 674 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 675 return 0; 676 } else { 677 if (ec_write(i, v) < 0) 678 return 0; 679 } 680 681 return 1; 682 } 683 684 static int issue_thinkpad_cmos_command(int cmos_cmd) 685 { 686 if (!cmos_handle) 687 return -ENXIO; 688 689 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 690 return -EIO; 691 692 return 0; 693 } 694 695 /************************************************************************* 696 * ACPI device model 697 */ 698 699 #define TPACPI_ACPIHANDLE_INIT(object) \ 700 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 701 object##_paths, ARRAY_SIZE(object##_paths)) 702 703 static void __init drv_acpi_handle_init(const char *name, 704 acpi_handle *handle, const acpi_handle parent, 705 char **paths, const int num_paths) 706 { 707 int i; 708 acpi_status status; 709 710 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 711 name); 712 713 for (i = 0; i < num_paths; i++) { 714 status = acpi_get_handle(parent, paths[i], handle); 715 if (ACPI_SUCCESS(status)) { 716 dbg_printk(TPACPI_DBG_INIT, 717 "Found ACPI handle %s for %s\n", 718 paths[i], name); 719 return; 720 } 721 } 722 723 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 724 name); 725 *handle = NULL; 726 } 727 728 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 729 u32 level, void *context, void **return_value) 730 { 731 struct acpi_device *dev; 732 if (!strcmp(context, "video")) { 733 if (acpi_bus_get_device(handle, &dev)) 734 return AE_OK; 735 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 736 return AE_OK; 737 } 738 739 *(acpi_handle *)return_value = handle; 740 741 return AE_CTRL_TERMINATE; 742 } 743 744 static void __init tpacpi_acpi_handle_locate(const char *name, 745 const char *hid, 746 acpi_handle *handle) 747 { 748 acpi_status status; 749 acpi_handle device_found; 750 751 BUG_ON(!name || !handle); 752 vdbg_printk(TPACPI_DBG_INIT, 753 "trying to locate ACPI handle for %s, using HID %s\n", 754 name, hid ? hid : "NULL"); 755 756 memset(&device_found, 0, sizeof(device_found)); 757 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 758 (void *)name, &device_found); 759 760 *handle = NULL; 761 762 if (ACPI_SUCCESS(status)) { 763 *handle = device_found; 764 dbg_printk(TPACPI_DBG_INIT, 765 "Found ACPI handle for %s\n", name); 766 } else { 767 vdbg_printk(TPACPI_DBG_INIT, 768 "Could not locate an ACPI handle for %s: %s\n", 769 name, acpi_format_exception(status)); 770 } 771 } 772 773 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 774 { 775 struct ibm_struct *ibm = data; 776 777 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 778 return; 779 780 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 781 return; 782 783 ibm->acpi->notify(ibm, event); 784 } 785 786 static int __init setup_acpi_notify(struct ibm_struct *ibm) 787 { 788 acpi_status status; 789 int rc; 790 791 BUG_ON(!ibm->acpi); 792 793 if (!*ibm->acpi->handle) 794 return 0; 795 796 vdbg_printk(TPACPI_DBG_INIT, 797 "setting up ACPI notify for %s\n", ibm->name); 798 799 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); 800 if (rc < 0) { 801 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc); 802 return -ENODEV; 803 } 804 805 ibm->acpi->device->driver_data = ibm; 806 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 807 TPACPI_ACPI_EVENT_PREFIX, 808 ibm->name); 809 810 status = acpi_install_notify_handler(*ibm->acpi->handle, 811 ibm->acpi->type, dispatch_acpi_notify, ibm); 812 if (ACPI_FAILURE(status)) { 813 if (status == AE_ALREADY_EXISTS) { 814 pr_notice("another device driver is already handling %s events\n", 815 ibm->name); 816 } else { 817 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 818 ibm->name, acpi_format_exception(status)); 819 } 820 return -ENODEV; 821 } 822 ibm->flags.acpi_notify_installed = 1; 823 return 0; 824 } 825 826 static int __init tpacpi_device_add(struct acpi_device *device) 827 { 828 return 0; 829 } 830 831 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 832 { 833 int rc; 834 835 dbg_printk(TPACPI_DBG_INIT, 836 "registering %s as an ACPI driver\n", ibm->name); 837 838 BUG_ON(!ibm->acpi); 839 840 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 841 if (!ibm->acpi->driver) { 842 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 843 return -ENOMEM; 844 } 845 846 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 847 ibm->acpi->driver->ids = ibm->acpi->hid; 848 849 ibm->acpi->driver->ops.add = &tpacpi_device_add; 850 851 rc = acpi_bus_register_driver(ibm->acpi->driver); 852 if (rc < 0) { 853 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 854 ibm->name, rc); 855 kfree(ibm->acpi->driver); 856 ibm->acpi->driver = NULL; 857 } else if (!rc) 858 ibm->flags.acpi_driver_registered = 1; 859 860 return rc; 861 } 862 863 864 /**************************************************************************** 865 **************************************************************************** 866 * 867 * Procfs Helpers 868 * 869 **************************************************************************** 870 ****************************************************************************/ 871 872 static int dispatch_proc_show(struct seq_file *m, void *v) 873 { 874 struct ibm_struct *ibm = m->private; 875 876 if (!ibm || !ibm->read) 877 return -EINVAL; 878 return ibm->read(m); 879 } 880 881 static int dispatch_proc_open(struct inode *inode, struct file *file) 882 { 883 return single_open(file, dispatch_proc_show, PDE_DATA(inode)); 884 } 885 886 static ssize_t dispatch_proc_write(struct file *file, 887 const char __user *userbuf, 888 size_t count, loff_t *pos) 889 { 890 struct ibm_struct *ibm = PDE_DATA(file_inode(file)); 891 char *kernbuf; 892 int ret; 893 894 if (!ibm || !ibm->write) 895 return -EINVAL; 896 if (count > PAGE_SIZE - 1) 897 return -EINVAL; 898 899 kernbuf = kmalloc(count + 1, GFP_KERNEL); 900 if (!kernbuf) 901 return -ENOMEM; 902 903 if (copy_from_user(kernbuf, userbuf, count)) { 904 kfree(kernbuf); 905 return -EFAULT; 906 } 907 908 kernbuf[count] = 0; 909 ret = ibm->write(kernbuf); 910 if (ret == 0) 911 ret = count; 912 913 kfree(kernbuf); 914 915 return ret; 916 } 917 918 static const struct proc_ops dispatch_proc_ops = { 919 .proc_open = dispatch_proc_open, 920 .proc_read = seq_read, 921 .proc_lseek = seq_lseek, 922 .proc_release = single_release, 923 .proc_write = dispatch_proc_write, 924 }; 925 926 /**************************************************************************** 927 **************************************************************************** 928 * 929 * Device model: input, hwmon and platform 930 * 931 **************************************************************************** 932 ****************************************************************************/ 933 934 static struct platform_device *tpacpi_pdev; 935 static struct platform_device *tpacpi_sensors_pdev; 936 static struct device *tpacpi_hwmon; 937 static struct input_dev *tpacpi_inputdev; 938 static struct mutex tpacpi_inputdev_send_mutex; 939 static LIST_HEAD(tpacpi_all_drivers); 940 941 #ifdef CONFIG_PM_SLEEP 942 static int tpacpi_suspend_handler(struct device *dev) 943 { 944 struct ibm_struct *ibm, *itmp; 945 946 list_for_each_entry_safe(ibm, itmp, 947 &tpacpi_all_drivers, 948 all_drivers) { 949 if (ibm->suspend) 950 (ibm->suspend)(); 951 } 952 953 return 0; 954 } 955 956 static int tpacpi_resume_handler(struct device *dev) 957 { 958 struct ibm_struct *ibm, *itmp; 959 960 list_for_each_entry_safe(ibm, itmp, 961 &tpacpi_all_drivers, 962 all_drivers) { 963 if (ibm->resume) 964 (ibm->resume)(); 965 } 966 967 return 0; 968 } 969 #endif 970 971 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 972 tpacpi_suspend_handler, tpacpi_resume_handler); 973 974 static void tpacpi_shutdown_handler(struct platform_device *pdev) 975 { 976 struct ibm_struct *ibm, *itmp; 977 978 list_for_each_entry_safe(ibm, itmp, 979 &tpacpi_all_drivers, 980 all_drivers) { 981 if (ibm->shutdown) 982 (ibm->shutdown)(); 983 } 984 } 985 986 static struct platform_driver tpacpi_pdriver = { 987 .driver = { 988 .name = TPACPI_DRVR_NAME, 989 .pm = &tpacpi_pm, 990 }, 991 .shutdown = tpacpi_shutdown_handler, 992 }; 993 994 static struct platform_driver tpacpi_hwmon_pdriver = { 995 .driver = { 996 .name = TPACPI_HWMON_DRVR_NAME, 997 }, 998 }; 999 1000 /************************************************************************* 1001 * sysfs support helpers 1002 */ 1003 1004 static int parse_strtoul(const char *buf, 1005 unsigned long max, unsigned long *value) 1006 { 1007 char *endp; 1008 1009 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1010 endp = skip_spaces(endp); 1011 if (*endp || *value > max) 1012 return -EINVAL; 1013 1014 return 0; 1015 } 1016 1017 static void tpacpi_disable_brightness_delay(void) 1018 { 1019 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1020 pr_notice("ACPI backlight control delay disabled\n"); 1021 } 1022 1023 static void printk_deprecated_attribute(const char * const what, 1024 const char * const details) 1025 { 1026 tpacpi_log_usertask("deprecated sysfs attribute"); 1027 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", 1028 what, details); 1029 } 1030 1031 /************************************************************************* 1032 * rfkill and radio control support helpers 1033 */ 1034 1035 /* 1036 * ThinkPad-ACPI firmware handling model: 1037 * 1038 * WLSW (master wireless switch) is event-driven, and is common to all 1039 * firmware-controlled radios. It cannot be controlled, just monitored, 1040 * as expected. It overrides all radio state in firmware 1041 * 1042 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1043 * (TODO: verify how WLSW interacts with the returned radio state). 1044 * 1045 * The only time there are shadow radio state changes, is when 1046 * masked-off hotkeys are used. 1047 */ 1048 1049 /* 1050 * Internal driver API for radio state: 1051 * 1052 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1053 * bool: true means radio blocked (off) 1054 */ 1055 enum tpacpi_rfkill_state { 1056 TPACPI_RFK_RADIO_OFF = 0, 1057 TPACPI_RFK_RADIO_ON 1058 }; 1059 1060 /* rfkill switches */ 1061 enum tpacpi_rfk_id { 1062 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1063 TPACPI_RFK_WWAN_SW_ID, 1064 TPACPI_RFK_UWB_SW_ID, 1065 TPACPI_RFK_SW_MAX 1066 }; 1067 1068 static const char *tpacpi_rfkill_names[] = { 1069 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1070 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1071 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1072 [TPACPI_RFK_SW_MAX] = NULL 1073 }; 1074 1075 /* ThinkPad-ACPI rfkill subdriver */ 1076 struct tpacpi_rfk { 1077 struct rfkill *rfkill; 1078 enum tpacpi_rfk_id id; 1079 const struct tpacpi_rfk_ops *ops; 1080 }; 1081 1082 struct tpacpi_rfk_ops { 1083 /* firmware interface */ 1084 int (*get_status)(void); 1085 int (*set_status)(const enum tpacpi_rfkill_state); 1086 }; 1087 1088 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1089 1090 /* Query FW and update rfkill sw state for a given rfkill switch */ 1091 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1092 { 1093 int status; 1094 1095 if (!tp_rfk) 1096 return -ENODEV; 1097 1098 status = (tp_rfk->ops->get_status)(); 1099 if (status < 0) 1100 return status; 1101 1102 rfkill_set_sw_state(tp_rfk->rfkill, 1103 (status == TPACPI_RFK_RADIO_OFF)); 1104 1105 return status; 1106 } 1107 1108 /* 1109 * Sync the HW-blocking state of all rfkill switches, 1110 * do notice it causes the rfkill core to schedule uevents 1111 */ 1112 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1113 { 1114 unsigned int i; 1115 struct tpacpi_rfk *tp_rfk; 1116 1117 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1118 tp_rfk = tpacpi_rfkill_switches[i]; 1119 if (tp_rfk) { 1120 if (rfkill_set_hw_state(tp_rfk->rfkill, 1121 blocked)) { 1122 /* ignore -- we track sw block */ 1123 } 1124 } 1125 } 1126 } 1127 1128 /* Call to get the WLSW state from the firmware */ 1129 static int hotkey_get_wlsw(void); 1130 1131 /* Call to query WLSW state and update all rfkill switches */ 1132 static bool tpacpi_rfk_check_hwblock_state(void) 1133 { 1134 int res = hotkey_get_wlsw(); 1135 int hw_blocked; 1136 1137 /* When unknown or unsupported, we have to assume it is unblocked */ 1138 if (res < 0) 1139 return false; 1140 1141 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1142 tpacpi_rfk_update_hwblock_state(hw_blocked); 1143 1144 return hw_blocked; 1145 } 1146 1147 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1148 { 1149 struct tpacpi_rfk *tp_rfk = data; 1150 int res; 1151 1152 dbg_printk(TPACPI_DBG_RFKILL, 1153 "request to change radio state to %s\n", 1154 blocked ? "blocked" : "unblocked"); 1155 1156 /* try to set radio state */ 1157 res = (tp_rfk->ops->set_status)(blocked ? 1158 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1159 1160 /* and update the rfkill core with whatever the FW really did */ 1161 tpacpi_rfk_update_swstate(tp_rfk); 1162 1163 return (res < 0) ? res : 0; 1164 } 1165 1166 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1167 .set_block = tpacpi_rfk_hook_set_block, 1168 }; 1169 1170 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1171 const struct tpacpi_rfk_ops *tp_rfkops, 1172 const enum rfkill_type rfktype, 1173 const char *name, 1174 const bool set_default) 1175 { 1176 struct tpacpi_rfk *atp_rfk; 1177 int res; 1178 bool sw_state = false; 1179 bool hw_state; 1180 int sw_status; 1181 1182 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1183 1184 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1185 if (atp_rfk) 1186 atp_rfk->rfkill = rfkill_alloc(name, 1187 &tpacpi_pdev->dev, 1188 rfktype, 1189 &tpacpi_rfk_rfkill_ops, 1190 atp_rfk); 1191 if (!atp_rfk || !atp_rfk->rfkill) { 1192 pr_err("failed to allocate memory for rfkill class\n"); 1193 kfree(atp_rfk); 1194 return -ENOMEM; 1195 } 1196 1197 atp_rfk->id = id; 1198 atp_rfk->ops = tp_rfkops; 1199 1200 sw_status = (tp_rfkops->get_status)(); 1201 if (sw_status < 0) { 1202 pr_err("failed to read initial state for %s, error %d\n", 1203 name, sw_status); 1204 } else { 1205 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1206 if (set_default) { 1207 /* try to keep the initial state, since we ask the 1208 * firmware to preserve it across S5 in NVRAM */ 1209 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1210 } 1211 } 1212 hw_state = tpacpi_rfk_check_hwblock_state(); 1213 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1214 1215 res = rfkill_register(atp_rfk->rfkill); 1216 if (res < 0) { 1217 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1218 rfkill_destroy(atp_rfk->rfkill); 1219 kfree(atp_rfk); 1220 return res; 1221 } 1222 1223 tpacpi_rfkill_switches[id] = atp_rfk; 1224 1225 pr_info("rfkill switch %s: radio is %sblocked\n", 1226 name, (sw_state || hw_state) ? "" : "un"); 1227 return 0; 1228 } 1229 1230 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1231 { 1232 struct tpacpi_rfk *tp_rfk; 1233 1234 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1235 1236 tp_rfk = tpacpi_rfkill_switches[id]; 1237 if (tp_rfk) { 1238 rfkill_unregister(tp_rfk->rfkill); 1239 rfkill_destroy(tp_rfk->rfkill); 1240 tpacpi_rfkill_switches[id] = NULL; 1241 kfree(tp_rfk); 1242 } 1243 } 1244 1245 static void printk_deprecated_rfkill_attribute(const char * const what) 1246 { 1247 printk_deprecated_attribute(what, 1248 "Please switch to generic rfkill before year 2010"); 1249 } 1250 1251 /* sysfs <radio> enable ------------------------------------------------ */ 1252 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1253 struct device_attribute *attr, 1254 char *buf) 1255 { 1256 int status; 1257 1258 printk_deprecated_rfkill_attribute(attr->attr.name); 1259 1260 /* This is in the ABI... */ 1261 if (tpacpi_rfk_check_hwblock_state()) { 1262 status = TPACPI_RFK_RADIO_OFF; 1263 } else { 1264 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1265 if (status < 0) 1266 return status; 1267 } 1268 1269 return sysfs_emit(buf, "%d\n", 1270 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1271 } 1272 1273 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1274 struct device_attribute *attr, 1275 const char *buf, size_t count) 1276 { 1277 unsigned long t; 1278 int res; 1279 1280 printk_deprecated_rfkill_attribute(attr->attr.name); 1281 1282 if (parse_strtoul(buf, 1, &t)) 1283 return -EINVAL; 1284 1285 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1286 1287 /* This is in the ABI... */ 1288 if (tpacpi_rfk_check_hwblock_state() && !!t) 1289 return -EPERM; 1290 1291 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1292 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1293 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1294 1295 return (res < 0) ? res : count; 1296 } 1297 1298 /* procfs -------------------------------------------------------------- */ 1299 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1300 { 1301 if (id >= TPACPI_RFK_SW_MAX) 1302 seq_printf(m, "status:\t\tnot supported\n"); 1303 else { 1304 int status; 1305 1306 /* This is in the ABI... */ 1307 if (tpacpi_rfk_check_hwblock_state()) { 1308 status = TPACPI_RFK_RADIO_OFF; 1309 } else { 1310 status = tpacpi_rfk_update_swstate( 1311 tpacpi_rfkill_switches[id]); 1312 if (status < 0) 1313 return status; 1314 } 1315 1316 seq_printf(m, "status:\t\t%s\n", 1317 (status == TPACPI_RFK_RADIO_ON) ? 1318 "enabled" : "disabled"); 1319 seq_printf(m, "commands:\tenable, disable\n"); 1320 } 1321 1322 return 0; 1323 } 1324 1325 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1326 { 1327 char *cmd; 1328 int status = -1; 1329 int res = 0; 1330 1331 if (id >= TPACPI_RFK_SW_MAX) 1332 return -ENODEV; 1333 1334 while ((cmd = strsep(&buf, ","))) { 1335 if (strlencmp(cmd, "enable") == 0) 1336 status = TPACPI_RFK_RADIO_ON; 1337 else if (strlencmp(cmd, "disable") == 0) 1338 status = TPACPI_RFK_RADIO_OFF; 1339 else 1340 return -EINVAL; 1341 } 1342 1343 if (status != -1) { 1344 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1345 (status == TPACPI_RFK_RADIO_ON) ? 1346 "enable" : "disable", 1347 tpacpi_rfkill_names[id]); 1348 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1349 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1350 } 1351 1352 return res; 1353 } 1354 1355 /************************************************************************* 1356 * thinkpad-acpi driver attributes 1357 */ 1358 1359 /* interface_version --------------------------------------------------- */ 1360 static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1361 { 1362 return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION); 1363 } 1364 static DRIVER_ATTR_RO(interface_version); 1365 1366 /* debug_level --------------------------------------------------------- */ 1367 static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1368 { 1369 return sysfs_emit(buf, "0x%04x\n", dbg_level); 1370 } 1371 1372 static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1373 size_t count) 1374 { 1375 unsigned long t; 1376 1377 if (parse_strtoul(buf, 0xffff, &t)) 1378 return -EINVAL; 1379 1380 dbg_level = t; 1381 1382 return count; 1383 } 1384 static DRIVER_ATTR_RW(debug_level); 1385 1386 /* version ------------------------------------------------------------- */ 1387 static ssize_t version_show(struct device_driver *drv, char *buf) 1388 { 1389 return sysfs_emit(buf, "%s v%s\n", 1390 TPACPI_DESC, TPACPI_VERSION); 1391 } 1392 static DRIVER_ATTR_RO(version); 1393 1394 /* --------------------------------------------------------------------- */ 1395 1396 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1397 1398 /* wlsw_emulstate ------------------------------------------------------ */ 1399 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1400 { 1401 return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate); 1402 } 1403 1404 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1405 size_t count) 1406 { 1407 unsigned long t; 1408 1409 if (parse_strtoul(buf, 1, &t)) 1410 return -EINVAL; 1411 1412 if (tpacpi_wlsw_emulstate != !!t) { 1413 tpacpi_wlsw_emulstate = !!t; 1414 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1415 } 1416 1417 return count; 1418 } 1419 static DRIVER_ATTR_RW(wlsw_emulstate); 1420 1421 /* bluetooth_emulstate ------------------------------------------------- */ 1422 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1423 { 1424 return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate); 1425 } 1426 1427 static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1428 const char *buf, size_t count) 1429 { 1430 unsigned long t; 1431 1432 if (parse_strtoul(buf, 1, &t)) 1433 return -EINVAL; 1434 1435 tpacpi_bluetooth_emulstate = !!t; 1436 1437 return count; 1438 } 1439 static DRIVER_ATTR_RW(bluetooth_emulstate); 1440 1441 /* wwan_emulstate ------------------------------------------------- */ 1442 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1443 { 1444 return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate); 1445 } 1446 1447 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1448 size_t count) 1449 { 1450 unsigned long t; 1451 1452 if (parse_strtoul(buf, 1, &t)) 1453 return -EINVAL; 1454 1455 tpacpi_wwan_emulstate = !!t; 1456 1457 return count; 1458 } 1459 static DRIVER_ATTR_RW(wwan_emulstate); 1460 1461 /* uwb_emulstate ------------------------------------------------- */ 1462 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1463 { 1464 return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate); 1465 } 1466 1467 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1468 size_t count) 1469 { 1470 unsigned long t; 1471 1472 if (parse_strtoul(buf, 1, &t)) 1473 return -EINVAL; 1474 1475 tpacpi_uwb_emulstate = !!t; 1476 1477 return count; 1478 } 1479 static DRIVER_ATTR_RW(uwb_emulstate); 1480 #endif 1481 1482 /* --------------------------------------------------------------------- */ 1483 1484 static struct driver_attribute *tpacpi_driver_attributes[] = { 1485 &driver_attr_debug_level, &driver_attr_version, 1486 &driver_attr_interface_version, 1487 }; 1488 1489 static int __init tpacpi_create_driver_attributes(struct device_driver *drv) 1490 { 1491 int i, res; 1492 1493 i = 0; 1494 res = 0; 1495 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { 1496 res = driver_create_file(drv, tpacpi_driver_attributes[i]); 1497 i++; 1498 } 1499 1500 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1501 if (!res && dbg_wlswemul) 1502 res = driver_create_file(drv, &driver_attr_wlsw_emulstate); 1503 if (!res && dbg_bluetoothemul) 1504 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); 1505 if (!res && dbg_wwanemul) 1506 res = driver_create_file(drv, &driver_attr_wwan_emulstate); 1507 if (!res && dbg_uwbemul) 1508 res = driver_create_file(drv, &driver_attr_uwb_emulstate); 1509 #endif 1510 1511 return res; 1512 } 1513 1514 static void tpacpi_remove_driver_attributes(struct device_driver *drv) 1515 { 1516 int i; 1517 1518 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) 1519 driver_remove_file(drv, tpacpi_driver_attributes[i]); 1520 1521 #ifdef THINKPAD_ACPI_DEBUGFACILITIES 1522 driver_remove_file(drv, &driver_attr_wlsw_emulstate); 1523 driver_remove_file(drv, &driver_attr_bluetooth_emulstate); 1524 driver_remove_file(drv, &driver_attr_wwan_emulstate); 1525 driver_remove_file(drv, &driver_attr_uwb_emulstate); 1526 #endif 1527 } 1528 1529 /************************************************************************* 1530 * Firmware Data 1531 */ 1532 1533 /* 1534 * Table of recommended minimum BIOS versions 1535 * 1536 * Reasons for listing: 1537 * 1. Stable BIOS, listed because the unknown amount of 1538 * bugs and bad ACPI behaviour on older versions 1539 * 1540 * 2. BIOS or EC fw with known bugs that trigger on Linux 1541 * 1542 * 3. BIOS with known reduced functionality in older versions 1543 * 1544 * We recommend the latest BIOS and EC version. 1545 * We only support the latest BIOS and EC fw version as a rule. 1546 * 1547 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1548 * Information from users in ThinkWiki 1549 * 1550 * WARNING: we use this table also to detect that the machine is 1551 * a ThinkPad in some cases, so don't remove entries lightly. 1552 */ 1553 1554 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1555 { .vendor = (__v), \ 1556 .bios = TPID(__id1, __id2), \ 1557 .ec = TPACPI_MATCH_ANY, \ 1558 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ 1559 | TPVER(__bv1, __bv2) } 1560 1561 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1562 __eid, __ev1, __ev2) \ 1563 { .vendor = (__v), \ 1564 .bios = TPID(__bid1, __bid2), \ 1565 .ec = __eid, \ 1566 .quirks = TPVER(__ev1, __ev2) << 16 \ 1567 | TPVER(__bv1, __bv2) } 1568 1569 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1570 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1571 1572 /* Outdated IBM BIOSes often lack the EC id string */ 1573 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1574 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1575 __bv1, __bv2, TPID(__id1, __id2), \ 1576 __ev1, __ev2), \ 1577 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1578 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1579 __ev1, __ev2) 1580 1581 /* Outdated IBM BIOSes often lack the EC id string */ 1582 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1583 __eid1, __eid2, __ev1, __ev2) \ 1584 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1585 __bv1, __bv2, TPID(__eid1, __eid2), \ 1586 __ev1, __ev2), \ 1587 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1588 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1589 __ev1, __ev2) 1590 1591 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1592 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1593 1594 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1595 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1596 __bv1, __bv2, TPID(__id1, __id2), \ 1597 __ev1, __ev2) 1598 1599 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1600 __eid1, __eid2, __ev1, __ev2) \ 1601 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1602 __bv1, __bv2, TPID(__eid1, __eid2), \ 1603 __ev1, __ev2) 1604 1605 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1606 /* Numeric models ------------------ */ 1607 /* FW MODEL BIOS VERS */ 1608 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1609 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1610 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1611 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1612 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1613 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1614 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1615 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1616 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1617 1618 /* A-series ------------------------- */ 1619 /* FW MODEL BIOS VERS EC VERS */ 1620 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1621 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1622 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1623 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1624 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1625 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1626 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1627 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1628 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1629 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1630 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1631 1632 /* G-series ------------------------- */ 1633 /* FW MODEL BIOS VERS */ 1634 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1635 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1636 1637 /* R-series, T-series --------------- */ 1638 /* FW MODEL BIOS VERS EC VERS */ 1639 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1640 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1641 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1642 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1643 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1644 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1645 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1646 T40/p, T41/p, T42/p (1) */ 1647 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1648 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1649 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1650 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1651 1652 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1653 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1654 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1655 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1656 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1657 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1658 1659 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1660 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1661 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1662 1663 /* BIOS FW BIOS VERS EC FW EC VERS */ 1664 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1665 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1666 1667 /* X-series ------------------------- */ 1668 /* FW MODEL BIOS VERS EC VERS */ 1669 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1670 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1671 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1672 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1673 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1674 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1675 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1676 1677 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1678 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1679 1680 /* (0) - older versions lack DMI EC fw string and functionality */ 1681 /* (1) - older versions known to lack functionality */ 1682 }; 1683 1684 #undef TPV_QL1 1685 #undef TPV_QL0 1686 #undef TPV_QI2 1687 #undef TPV_QI1 1688 #undef TPV_QI0 1689 #undef TPV_Q_X 1690 #undef TPV_Q 1691 1692 static void __init tpacpi_check_outdated_fw(void) 1693 { 1694 unsigned long fwvers; 1695 u16 ec_version, bios_version; 1696 1697 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1698 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1699 1700 if (!fwvers) 1701 return; 1702 1703 bios_version = fwvers & 0xffffU; 1704 ec_version = (fwvers >> 16) & 0xffffU; 1705 1706 /* note that unknown versions are set to 0x0000 and we use that */ 1707 if ((bios_version > thinkpad_id.bios_release) || 1708 (ec_version > thinkpad_id.ec_release && 1709 ec_version != TPACPI_MATCH_ANY_VERSION)) { 1710 /* 1711 * The changelogs would let us track down the exact 1712 * reason, but it is just too much of a pain to track 1713 * it. We only list BIOSes that are either really 1714 * broken, or really stable to begin with, so it is 1715 * best if the user upgrades the firmware anyway. 1716 */ 1717 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1718 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1719 } 1720 } 1721 1722 static bool __init tpacpi_is_fw_known(void) 1723 { 1724 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1725 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1726 } 1727 1728 /**************************************************************************** 1729 **************************************************************************** 1730 * 1731 * Subdrivers 1732 * 1733 **************************************************************************** 1734 ****************************************************************************/ 1735 1736 /************************************************************************* 1737 * thinkpad-acpi metadata subdriver 1738 */ 1739 1740 static int thinkpad_acpi_driver_read(struct seq_file *m) 1741 { 1742 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1743 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1744 return 0; 1745 } 1746 1747 static struct ibm_struct thinkpad_acpi_driver_data = { 1748 .name = "driver", 1749 .read = thinkpad_acpi_driver_read, 1750 }; 1751 1752 /************************************************************************* 1753 * Hotkey subdriver 1754 */ 1755 1756 /* 1757 * ThinkPad firmware event model 1758 * 1759 * The ThinkPad firmware has two main event interfaces: normal ACPI 1760 * notifications (which follow the ACPI standard), and a private event 1761 * interface. 1762 * 1763 * The private event interface also issues events for the hotkeys. As 1764 * the driver gained features, the event handling code ended up being 1765 * built around the hotkey subdriver. This will need to be refactored 1766 * to a more formal event API eventually. 1767 * 1768 * Some "hotkeys" are actually supposed to be used as event reports, 1769 * such as "brightness has changed", "volume has changed", depending on 1770 * the ThinkPad model and how the firmware is operating. 1771 * 1772 * Unlike other classes, hotkey-class events have mask/unmask control on 1773 * non-ancient firmware. However, how it behaves changes a lot with the 1774 * firmware model and version. 1775 */ 1776 1777 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1778 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1779 TP_ACPI_HOTKEYSCAN_FNF2, 1780 TP_ACPI_HOTKEYSCAN_FNF3, 1781 TP_ACPI_HOTKEYSCAN_FNF4, 1782 TP_ACPI_HOTKEYSCAN_FNF5, 1783 TP_ACPI_HOTKEYSCAN_FNF6, 1784 TP_ACPI_HOTKEYSCAN_FNF7, 1785 TP_ACPI_HOTKEYSCAN_FNF8, 1786 TP_ACPI_HOTKEYSCAN_FNF9, 1787 TP_ACPI_HOTKEYSCAN_FNF10, 1788 TP_ACPI_HOTKEYSCAN_FNF11, 1789 TP_ACPI_HOTKEYSCAN_FNF12, 1790 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1791 TP_ACPI_HOTKEYSCAN_FNINSERT, 1792 TP_ACPI_HOTKEYSCAN_FNDELETE, 1793 TP_ACPI_HOTKEYSCAN_FNHOME, 1794 TP_ACPI_HOTKEYSCAN_FNEND, 1795 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1796 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1797 TP_ACPI_HOTKEYSCAN_FNSPACE, 1798 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1799 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1800 TP_ACPI_HOTKEYSCAN_MUTE, 1801 TP_ACPI_HOTKEYSCAN_THINKPAD, 1802 TP_ACPI_HOTKEYSCAN_UNK1, 1803 TP_ACPI_HOTKEYSCAN_UNK2, 1804 TP_ACPI_HOTKEYSCAN_UNK3, 1805 TP_ACPI_HOTKEYSCAN_UNK4, 1806 TP_ACPI_HOTKEYSCAN_UNK5, 1807 TP_ACPI_HOTKEYSCAN_UNK6, 1808 TP_ACPI_HOTKEYSCAN_UNK7, 1809 TP_ACPI_HOTKEYSCAN_UNK8, 1810 1811 /* Adaptive keyboard keycodes */ 1812 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1813 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1814 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1815 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1816 TP_ACPI_HOTKEYSCAN_CLOUD, 1817 TP_ACPI_HOTKEYSCAN_UNK9, 1818 TP_ACPI_HOTKEYSCAN_VOICE, 1819 TP_ACPI_HOTKEYSCAN_UNK10, 1820 TP_ACPI_HOTKEYSCAN_GESTURES, 1821 TP_ACPI_HOTKEYSCAN_UNK11, 1822 TP_ACPI_HOTKEYSCAN_UNK12, 1823 TP_ACPI_HOTKEYSCAN_UNK13, 1824 TP_ACPI_HOTKEYSCAN_CONFIG, 1825 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1826 TP_ACPI_HOTKEYSCAN_RELOAD, 1827 TP_ACPI_HOTKEYSCAN_BACK, 1828 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1829 TP_ACPI_HOTKEYSCAN_MIC_UP, 1830 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1831 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1832 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1833 1834 /* Lenovo extended keymap, starting at 0x1300 */ 1835 TP_ACPI_HOTKEYSCAN_EXTENDED_START, 1836 /* first new observed key (star, favorites) is 0x1311 */ 1837 TP_ACPI_HOTKEYSCAN_STAR = 69, 1838 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1839 TP_ACPI_HOTKEYSCAN_CALCULATOR, 1840 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1841 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1842 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ 1843 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, 1844 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, 1845 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, 1846 1847 /* Hotkey keymap size */ 1848 TPACPI_HOTKEY_MAP_LEN 1849 }; 1850 1851 enum { /* Keys/events available through NVRAM polling */ 1852 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1853 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1854 }; 1855 1856 enum { /* Positions of some of the keys in hotkey masks */ 1857 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1858 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1859 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1860 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1861 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1862 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1863 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1864 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1865 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1866 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1867 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1868 }; 1869 1870 enum { /* NVRAM to ACPI HKEY group map */ 1871 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1872 TP_ACPI_HKEY_ZOOM_MASK | 1873 TP_ACPI_HKEY_DISPSWTCH_MASK | 1874 TP_ACPI_HKEY_HIBERNATE_MASK, 1875 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1876 TP_ACPI_HKEY_BRGHTDWN_MASK, 1877 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1878 TP_ACPI_HKEY_VOLDWN_MASK | 1879 TP_ACPI_HKEY_MUTE_MASK, 1880 }; 1881 1882 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1883 struct tp_nvram_state { 1884 u16 thinkpad_toggle:1; 1885 u16 zoom_toggle:1; 1886 u16 display_toggle:1; 1887 u16 thinklight_toggle:1; 1888 u16 hibernate_toggle:1; 1889 u16 displayexp_toggle:1; 1890 u16 display_state:1; 1891 u16 brightness_toggle:1; 1892 u16 volume_toggle:1; 1893 u16 mute:1; 1894 1895 u8 brightness_level; 1896 u8 volume_level; 1897 }; 1898 1899 /* kthread for the hotkey poller */ 1900 static struct task_struct *tpacpi_hotkey_task; 1901 1902 /* 1903 * Acquire mutex to write poller control variables as an 1904 * atomic block. 1905 * 1906 * Increment hotkey_config_change when changing them if you 1907 * want the kthread to forget old state. 1908 * 1909 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1910 */ 1911 static struct mutex hotkey_thread_data_mutex; 1912 static unsigned int hotkey_config_change; 1913 1914 /* 1915 * hotkey poller control variables 1916 * 1917 * Must be atomic or readers will also need to acquire mutex 1918 * 1919 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1920 * should be used only when the changes need to be taken as 1921 * a block, OR when one needs to force the kthread to forget 1922 * old state. 1923 */ 1924 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 1925 static unsigned int hotkey_poll_freq = 10; /* Hz */ 1926 1927 #define HOTKEY_CONFIG_CRITICAL_START \ 1928 do { \ 1929 mutex_lock(&hotkey_thread_data_mutex); \ 1930 hotkey_config_change++; \ 1931 } while (0); 1932 #define HOTKEY_CONFIG_CRITICAL_END \ 1933 mutex_unlock(&hotkey_thread_data_mutex); 1934 1935 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1936 1937 #define hotkey_source_mask 0U 1938 #define HOTKEY_CONFIG_CRITICAL_START 1939 #define HOTKEY_CONFIG_CRITICAL_END 1940 1941 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1942 1943 static struct mutex hotkey_mutex; 1944 1945 static enum { /* Reasons for waking up */ 1946 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 1947 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 1948 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 1949 } hotkey_wakeup_reason; 1950 1951 static int hotkey_autosleep_ack; 1952 1953 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 1954 static u32 hotkey_all_mask; /* all events supported in fw */ 1955 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 1956 static u32 hotkey_reserved_mask; /* events better left disabled */ 1957 static u32 hotkey_driver_mask; /* events needed by the driver */ 1958 static u32 hotkey_user_mask; /* events visible to userspace */ 1959 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 1960 1961 static u16 *hotkey_keycode_map; 1962 1963 static void tpacpi_driver_event(const unsigned int hkey_event); 1964 static void hotkey_driver_event(const unsigned int scancode); 1965 static void hotkey_poll_setup(const bool may_warn); 1966 1967 /* HKEY.MHKG() return bits */ 1968 #define TP_HOTKEY_TABLET_MASK (1 << 3) 1969 enum { 1970 TP_ACPI_MULTI_MODE_INVALID = 0, 1971 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 1972 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 1973 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 1974 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 1975 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 1976 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 1977 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 1978 }; 1979 1980 enum { 1981 /* The following modes are considered tablet mode for the purpose of 1982 * reporting the status to userspace. i.e. in all these modes it makes 1983 * sense to disable the laptop input devices such as touchpad and 1984 * keyboard. 1985 */ 1986 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 1987 TP_ACPI_MULTI_MODE_STAND | 1988 TP_ACPI_MULTI_MODE_TENT | 1989 TP_ACPI_MULTI_MODE_STAND_TENT, 1990 }; 1991 1992 static int hotkey_get_wlsw(void) 1993 { 1994 int status; 1995 1996 if (!tp_features.hotkey_wlsw) 1997 return -ENODEV; 1998 1999 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 2000 if (dbg_wlswemul) 2001 return (tpacpi_wlsw_emulstate) ? 2002 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2003 #endif 2004 2005 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 2006 return -EIO; 2007 2008 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2009 } 2010 2011 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 2012 { 2013 int type = (s >> 16) & 0xffff; 2014 int value = s & 0xffff; 2015 int mode = TP_ACPI_MULTI_MODE_INVALID; 2016 int valid_modes = 0; 2017 2018 if (has_tablet_mode) 2019 *has_tablet_mode = 0; 2020 2021 switch (type) { 2022 case 1: 2023 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2024 TP_ACPI_MULTI_MODE_TABLET | 2025 TP_ACPI_MULTI_MODE_STAND_TENT; 2026 break; 2027 case 2: 2028 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2029 TP_ACPI_MULTI_MODE_FLAT | 2030 TP_ACPI_MULTI_MODE_TABLET | 2031 TP_ACPI_MULTI_MODE_STAND | 2032 TP_ACPI_MULTI_MODE_TENT; 2033 break; 2034 case 3: 2035 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2036 TP_ACPI_MULTI_MODE_FLAT; 2037 break; 2038 case 4: 2039 case 5: 2040 /* In mode 4, FLAT is not specified as a valid mode. However, 2041 * it can be seen at least on the X1 Yoga 2nd Generation. 2042 */ 2043 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2044 TP_ACPI_MULTI_MODE_FLAT | 2045 TP_ACPI_MULTI_MODE_TABLET | 2046 TP_ACPI_MULTI_MODE_STAND | 2047 TP_ACPI_MULTI_MODE_TENT; 2048 break; 2049 default: 2050 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2051 type, value, TPACPI_MAIL); 2052 return 0; 2053 } 2054 2055 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2056 *has_tablet_mode = 1; 2057 2058 switch (value) { 2059 case 1: 2060 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2061 break; 2062 case 2: 2063 mode = TP_ACPI_MULTI_MODE_FLAT; 2064 break; 2065 case 3: 2066 mode = TP_ACPI_MULTI_MODE_TABLET; 2067 break; 2068 case 4: 2069 if (type == 1) 2070 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2071 else 2072 mode = TP_ACPI_MULTI_MODE_STAND; 2073 break; 2074 case 5: 2075 mode = TP_ACPI_MULTI_MODE_TENT; 2076 break; 2077 default: 2078 if (type == 5 && value == 0xffff) { 2079 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2080 return 0; 2081 } 2082 } 2083 2084 if (!(mode & valid_modes)) { 2085 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2086 value, type, TPACPI_MAIL); 2087 return 0; 2088 } 2089 2090 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2091 } 2092 2093 static int hotkey_get_tablet_mode(int *status) 2094 { 2095 int s; 2096 2097 switch (tp_features.hotkey_tablet) { 2098 case TP_HOTKEY_TABLET_USES_MHKG: 2099 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2100 return -EIO; 2101 2102 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2103 break; 2104 case TP_HOTKEY_TABLET_USES_GMMS: 2105 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2106 return -EIO; 2107 2108 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2109 break; 2110 default: 2111 break; 2112 } 2113 2114 return 0; 2115 } 2116 2117 /* 2118 * Reads current event mask from firmware, and updates 2119 * hotkey_acpi_mask accordingly. Also resets any bits 2120 * from hotkey_user_mask that are unavailable to be 2121 * delivered (shadow requirement of the userspace ABI). 2122 * 2123 * Call with hotkey_mutex held 2124 */ 2125 static int hotkey_mask_get(void) 2126 { 2127 if (tp_features.hotkey_mask) { 2128 u32 m = 0; 2129 2130 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2131 return -EIO; 2132 2133 hotkey_acpi_mask = m; 2134 } else { 2135 /* no mask support doesn't mean no event support... */ 2136 hotkey_acpi_mask = hotkey_all_mask; 2137 } 2138 2139 /* sync userspace-visible mask */ 2140 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2141 2142 return 0; 2143 } 2144 2145 static void hotkey_mask_warn_incomplete_mask(void) 2146 { 2147 /* log only what the user can fix... */ 2148 const u32 wantedmask = hotkey_driver_mask & 2149 ~(hotkey_acpi_mask | hotkey_source_mask) & 2150 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2151 2152 if (wantedmask) 2153 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2154 } 2155 2156 /* 2157 * Set the firmware mask when supported 2158 * 2159 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2160 * 2161 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2162 * 2163 * Call with hotkey_mutex held 2164 */ 2165 static int hotkey_mask_set(u32 mask) 2166 { 2167 int i; 2168 int rc = 0; 2169 2170 const u32 fwmask = mask & ~hotkey_source_mask; 2171 2172 if (tp_features.hotkey_mask) { 2173 for (i = 0; i < 32; i++) { 2174 if (!acpi_evalf(hkey_handle, 2175 NULL, "MHKM", "vdd", i + 1, 2176 !!(mask & (1 << i)))) { 2177 rc = -EIO; 2178 break; 2179 } 2180 } 2181 } 2182 2183 /* 2184 * We *must* make an inconditional call to hotkey_mask_get to 2185 * refresh hotkey_acpi_mask and update hotkey_user_mask 2186 * 2187 * Take the opportunity to also log when we cannot _enable_ 2188 * a given event. 2189 */ 2190 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2191 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2192 fwmask, hotkey_acpi_mask); 2193 } 2194 2195 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2196 hotkey_mask_warn_incomplete_mask(); 2197 2198 return rc; 2199 } 2200 2201 /* 2202 * Sets hotkey_user_mask and tries to set the firmware mask 2203 * 2204 * Call with hotkey_mutex held 2205 */ 2206 static int hotkey_user_mask_set(const u32 mask) 2207 { 2208 int rc; 2209 2210 /* Give people a chance to notice they are doing something that 2211 * is bound to go boom on their users sooner or later */ 2212 if (!tp_warned.hotkey_mask_ff && 2213 (mask == 0xffff || mask == 0xffffff || 2214 mask == 0xffffffff)) { 2215 tp_warned.hotkey_mask_ff = 1; 2216 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2217 mask); 2218 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2219 } 2220 2221 /* Try to enable what the user asked for, plus whatever we need. 2222 * this syncs everything but won't enable bits in hotkey_user_mask */ 2223 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2224 2225 /* Enable the available bits in hotkey_user_mask */ 2226 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2227 2228 return rc; 2229 } 2230 2231 /* 2232 * Sets the driver hotkey mask. 2233 * 2234 * Can be called even if the hotkey subdriver is inactive 2235 */ 2236 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2237 { 2238 int rc; 2239 2240 /* Do the right thing if hotkey_init has not been called yet */ 2241 if (!tp_features.hotkey) { 2242 hotkey_driver_mask = mask; 2243 return 0; 2244 } 2245 2246 mutex_lock(&hotkey_mutex); 2247 2248 HOTKEY_CONFIG_CRITICAL_START 2249 hotkey_driver_mask = mask; 2250 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2251 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2252 #endif 2253 HOTKEY_CONFIG_CRITICAL_END 2254 2255 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2256 ~hotkey_source_mask); 2257 hotkey_poll_setup(true); 2258 2259 mutex_unlock(&hotkey_mutex); 2260 2261 return rc; 2262 } 2263 2264 static int hotkey_status_get(int *status) 2265 { 2266 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2267 return -EIO; 2268 2269 return 0; 2270 } 2271 2272 static int hotkey_status_set(bool enable) 2273 { 2274 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2275 return -EIO; 2276 2277 return 0; 2278 } 2279 2280 static void tpacpi_input_send_tabletsw(void) 2281 { 2282 int state; 2283 2284 if (tp_features.hotkey_tablet && 2285 !hotkey_get_tablet_mode(&state)) { 2286 mutex_lock(&tpacpi_inputdev_send_mutex); 2287 2288 input_report_switch(tpacpi_inputdev, 2289 SW_TABLET_MODE, !!state); 2290 input_sync(tpacpi_inputdev); 2291 2292 mutex_unlock(&tpacpi_inputdev_send_mutex); 2293 } 2294 } 2295 2296 /* Do NOT call without validating scancode first */ 2297 static void tpacpi_input_send_key(const unsigned int scancode) 2298 { 2299 const unsigned int keycode = hotkey_keycode_map[scancode]; 2300 2301 if (keycode != KEY_RESERVED) { 2302 mutex_lock(&tpacpi_inputdev_send_mutex); 2303 2304 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2305 input_report_key(tpacpi_inputdev, keycode, 1); 2306 input_sync(tpacpi_inputdev); 2307 2308 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2309 input_report_key(tpacpi_inputdev, keycode, 0); 2310 input_sync(tpacpi_inputdev); 2311 2312 mutex_unlock(&tpacpi_inputdev_send_mutex); 2313 } 2314 } 2315 2316 /* Do NOT call without validating scancode first */ 2317 static void tpacpi_input_send_key_masked(const unsigned int scancode) 2318 { 2319 hotkey_driver_event(scancode); 2320 if (hotkey_user_mask & (1 << scancode)) 2321 tpacpi_input_send_key(scancode); 2322 } 2323 2324 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2325 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2326 2327 /* Do NOT call without validating scancode first */ 2328 static void tpacpi_hotkey_send_key(unsigned int scancode) 2329 { 2330 tpacpi_input_send_key_masked(scancode); 2331 } 2332 2333 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2334 { 2335 u8 d; 2336 2337 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2338 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2339 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2340 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2341 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2342 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2343 } 2344 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2345 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2346 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2347 } 2348 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2349 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2350 n->displayexp_toggle = 2351 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2352 } 2353 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2354 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2355 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2356 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2357 n->brightness_toggle = 2358 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2359 } 2360 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2361 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2362 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2363 >> TP_NVRAM_POS_LEVEL_VOLUME; 2364 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2365 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2366 } 2367 } 2368 2369 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2370 do { \ 2371 if ((event_mask & (1 << __scancode)) && \ 2372 oldn->__member != newn->__member) \ 2373 tpacpi_hotkey_send_key(__scancode); \ 2374 } while (0) 2375 2376 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2377 do { \ 2378 if (event_mask & (1 << __scancode)) \ 2379 tpacpi_hotkey_send_key(__scancode); \ 2380 } while (0) 2381 2382 static void issue_volchange(const unsigned int oldvol, 2383 const unsigned int newvol, 2384 const u32 event_mask) 2385 { 2386 unsigned int i = oldvol; 2387 2388 while (i > newvol) { 2389 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2390 i--; 2391 } 2392 while (i < newvol) { 2393 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2394 i++; 2395 } 2396 } 2397 2398 static void issue_brightnesschange(const unsigned int oldbrt, 2399 const unsigned int newbrt, 2400 const u32 event_mask) 2401 { 2402 unsigned int i = oldbrt; 2403 2404 while (i > newbrt) { 2405 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2406 i--; 2407 } 2408 while (i < newbrt) { 2409 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2410 i++; 2411 } 2412 } 2413 2414 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2415 struct tp_nvram_state *newn, 2416 const u32 event_mask) 2417 { 2418 2419 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2420 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2421 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2422 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2423 2424 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2425 2426 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2427 2428 /* 2429 * Handle volume 2430 * 2431 * This code is supposed to duplicate the IBM firmware behaviour: 2432 * - Pressing MUTE issues mute hotkey message, even when already mute 2433 * - Pressing Volume up/down issues volume up/down hotkey messages, 2434 * even when already at maximum or minimum volume 2435 * - The act of unmuting issues volume up/down notification, 2436 * depending which key was used to unmute 2437 * 2438 * We are constrained to what the NVRAM can tell us, which is not much 2439 * and certainly not enough if more than one volume hotkey was pressed 2440 * since the last poll cycle. 2441 * 2442 * Just to make our life interesting, some newer Lenovo ThinkPads have 2443 * bugs in the BIOS and may fail to update volume_toggle properly. 2444 */ 2445 if (newn->mute) { 2446 /* muted */ 2447 if (!oldn->mute || 2448 oldn->volume_toggle != newn->volume_toggle || 2449 oldn->volume_level != newn->volume_level) { 2450 /* recently muted, or repeated mute keypress, or 2451 * multiple presses ending in mute */ 2452 issue_volchange(oldn->volume_level, newn->volume_level, 2453 event_mask); 2454 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2455 } 2456 } else { 2457 /* unmute */ 2458 if (oldn->mute) { 2459 /* recently unmuted, issue 'unmute' keypress */ 2460 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2461 } 2462 if (oldn->volume_level != newn->volume_level) { 2463 issue_volchange(oldn->volume_level, newn->volume_level, 2464 event_mask); 2465 } else if (oldn->volume_toggle != newn->volume_toggle) { 2466 /* repeated vol up/down keypress at end of scale ? */ 2467 if (newn->volume_level == 0) 2468 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2469 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2470 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2471 } 2472 } 2473 2474 /* handle brightness */ 2475 if (oldn->brightness_level != newn->brightness_level) { 2476 issue_brightnesschange(oldn->brightness_level, 2477 newn->brightness_level, event_mask); 2478 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2479 /* repeated key presses that didn't change state */ 2480 if (newn->brightness_level == 0) 2481 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2482 else if (newn->brightness_level >= bright_maxlvl 2483 && !tp_features.bright_unkfw) 2484 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2485 } 2486 2487 #undef TPACPI_COMPARE_KEY 2488 #undef TPACPI_MAY_SEND_KEY 2489 } 2490 2491 /* 2492 * Polling driver 2493 * 2494 * We track all events in hotkey_source_mask all the time, since 2495 * most of them are edge-based. We only issue those requested by 2496 * hotkey_user_mask or hotkey_driver_mask, though. 2497 */ 2498 static int hotkey_kthread(void *data) 2499 { 2500 struct tp_nvram_state s[2] = { 0 }; 2501 u32 poll_mask, event_mask; 2502 unsigned int si, so; 2503 unsigned long t; 2504 unsigned int change_detector; 2505 unsigned int poll_freq; 2506 bool was_frozen; 2507 2508 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2509 goto exit; 2510 2511 set_freezable(); 2512 2513 so = 0; 2514 si = 1; 2515 t = 0; 2516 2517 /* Initial state for compares */ 2518 mutex_lock(&hotkey_thread_data_mutex); 2519 change_detector = hotkey_config_change; 2520 poll_mask = hotkey_source_mask; 2521 event_mask = hotkey_source_mask & 2522 (hotkey_driver_mask | hotkey_user_mask); 2523 poll_freq = hotkey_poll_freq; 2524 mutex_unlock(&hotkey_thread_data_mutex); 2525 hotkey_read_nvram(&s[so], poll_mask); 2526 2527 while (!kthread_should_stop()) { 2528 if (t == 0) { 2529 if (likely(poll_freq)) 2530 t = 1000/poll_freq; 2531 else 2532 t = 100; /* should never happen... */ 2533 } 2534 t = msleep_interruptible(t); 2535 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2536 break; 2537 2538 if (t > 0 && !was_frozen) 2539 continue; 2540 2541 mutex_lock(&hotkey_thread_data_mutex); 2542 if (was_frozen || hotkey_config_change != change_detector) { 2543 /* forget old state on thaw or config change */ 2544 si = so; 2545 t = 0; 2546 change_detector = hotkey_config_change; 2547 } 2548 poll_mask = hotkey_source_mask; 2549 event_mask = hotkey_source_mask & 2550 (hotkey_driver_mask | hotkey_user_mask); 2551 poll_freq = hotkey_poll_freq; 2552 mutex_unlock(&hotkey_thread_data_mutex); 2553 2554 if (likely(poll_mask)) { 2555 hotkey_read_nvram(&s[si], poll_mask); 2556 if (likely(si != so)) { 2557 hotkey_compare_and_issue_event(&s[so], &s[si], 2558 event_mask); 2559 } 2560 } 2561 2562 so = si; 2563 si ^= 1; 2564 } 2565 2566 exit: 2567 return 0; 2568 } 2569 2570 /* call with hotkey_mutex held */ 2571 static void hotkey_poll_stop_sync(void) 2572 { 2573 if (tpacpi_hotkey_task) { 2574 kthread_stop(tpacpi_hotkey_task); 2575 tpacpi_hotkey_task = NULL; 2576 } 2577 } 2578 2579 /* call with hotkey_mutex held */ 2580 static void hotkey_poll_setup(const bool may_warn) 2581 { 2582 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2583 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2584 2585 if (hotkey_poll_freq > 0 && 2586 (poll_driver_mask || 2587 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2588 if (!tpacpi_hotkey_task) { 2589 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2590 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2591 if (IS_ERR(tpacpi_hotkey_task)) { 2592 tpacpi_hotkey_task = NULL; 2593 pr_err("could not create kernel thread for hotkey polling\n"); 2594 } 2595 } 2596 } else { 2597 hotkey_poll_stop_sync(); 2598 if (may_warn && (poll_driver_mask || poll_user_mask) && 2599 hotkey_poll_freq == 0) { 2600 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2601 poll_user_mask, poll_driver_mask); 2602 } 2603 } 2604 } 2605 2606 static void hotkey_poll_setup_safe(const bool may_warn) 2607 { 2608 mutex_lock(&hotkey_mutex); 2609 hotkey_poll_setup(may_warn); 2610 mutex_unlock(&hotkey_mutex); 2611 } 2612 2613 /* call with hotkey_mutex held */ 2614 static void hotkey_poll_set_freq(unsigned int freq) 2615 { 2616 if (!freq) 2617 hotkey_poll_stop_sync(); 2618 2619 hotkey_poll_freq = freq; 2620 } 2621 2622 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2623 2624 static void hotkey_poll_setup(const bool __unused) 2625 { 2626 } 2627 2628 static void hotkey_poll_setup_safe(const bool __unused) 2629 { 2630 } 2631 2632 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2633 2634 static int hotkey_inputdev_open(struct input_dev *dev) 2635 { 2636 switch (tpacpi_lifecycle) { 2637 case TPACPI_LIFE_INIT: 2638 case TPACPI_LIFE_RUNNING: 2639 hotkey_poll_setup_safe(false); 2640 return 0; 2641 case TPACPI_LIFE_EXITING: 2642 return -EBUSY; 2643 } 2644 2645 /* Should only happen if tpacpi_lifecycle is corrupt */ 2646 BUG(); 2647 return -EBUSY; 2648 } 2649 2650 static void hotkey_inputdev_close(struct input_dev *dev) 2651 { 2652 /* disable hotkey polling when possible */ 2653 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2654 !(hotkey_source_mask & hotkey_driver_mask)) 2655 hotkey_poll_setup_safe(false); 2656 } 2657 2658 /* sysfs hotkey enable ------------------------------------------------- */ 2659 static ssize_t hotkey_enable_show(struct device *dev, 2660 struct device_attribute *attr, 2661 char *buf) 2662 { 2663 int res, status; 2664 2665 printk_deprecated_attribute("hotkey_enable", 2666 "Hotkey reporting is always enabled"); 2667 2668 res = hotkey_status_get(&status); 2669 if (res) 2670 return res; 2671 2672 return sysfs_emit(buf, "%d\n", status); 2673 } 2674 2675 static ssize_t hotkey_enable_store(struct device *dev, 2676 struct device_attribute *attr, 2677 const char *buf, size_t count) 2678 { 2679 unsigned long t; 2680 2681 printk_deprecated_attribute("hotkey_enable", 2682 "Hotkeys can be disabled through hotkey_mask"); 2683 2684 if (parse_strtoul(buf, 1, &t)) 2685 return -EINVAL; 2686 2687 if (t == 0) 2688 return -EPERM; 2689 2690 return count; 2691 } 2692 2693 static DEVICE_ATTR_RW(hotkey_enable); 2694 2695 /* sysfs hotkey mask --------------------------------------------------- */ 2696 static ssize_t hotkey_mask_show(struct device *dev, 2697 struct device_attribute *attr, 2698 char *buf) 2699 { 2700 return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask); 2701 } 2702 2703 static ssize_t hotkey_mask_store(struct device *dev, 2704 struct device_attribute *attr, 2705 const char *buf, size_t count) 2706 { 2707 unsigned long t; 2708 int res; 2709 2710 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2711 return -EINVAL; 2712 2713 if (mutex_lock_killable(&hotkey_mutex)) 2714 return -ERESTARTSYS; 2715 2716 res = hotkey_user_mask_set(t); 2717 2718 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2719 hotkey_poll_setup(true); 2720 #endif 2721 2722 mutex_unlock(&hotkey_mutex); 2723 2724 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2725 2726 return (res) ? res : count; 2727 } 2728 2729 static DEVICE_ATTR_RW(hotkey_mask); 2730 2731 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2732 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2733 struct device_attribute *attr, 2734 char *buf) 2735 { 2736 return sprintf(buf, "0\n"); 2737 } 2738 2739 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2740 2741 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2742 static ssize_t hotkey_bios_mask_show(struct device *dev, 2743 struct device_attribute *attr, 2744 char *buf) 2745 { 2746 printk_deprecated_attribute("hotkey_bios_mask", 2747 "This attribute is useless."); 2748 return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask); 2749 } 2750 2751 static DEVICE_ATTR_RO(hotkey_bios_mask); 2752 2753 /* sysfs hotkey all_mask ----------------------------------------------- */ 2754 static ssize_t hotkey_all_mask_show(struct device *dev, 2755 struct device_attribute *attr, 2756 char *buf) 2757 { 2758 return sysfs_emit(buf, "0x%08x\n", 2759 hotkey_all_mask | hotkey_source_mask); 2760 } 2761 2762 static DEVICE_ATTR_RO(hotkey_all_mask); 2763 2764 /* sysfs hotkey all_mask ----------------------------------------------- */ 2765 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2766 struct device_attribute *attr, 2767 char *buf) 2768 { 2769 return sysfs_emit(buf, "0x%08x\n", 2770 hotkey_adaptive_all_mask | hotkey_source_mask); 2771 } 2772 2773 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2774 2775 /* sysfs hotkey recommended_mask --------------------------------------- */ 2776 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2777 struct device_attribute *attr, 2778 char *buf) 2779 { 2780 return sysfs_emit(buf, "0x%08x\n", 2781 (hotkey_all_mask | hotkey_source_mask) 2782 & ~hotkey_reserved_mask); 2783 } 2784 2785 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2786 2787 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2788 2789 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2790 static ssize_t hotkey_source_mask_show(struct device *dev, 2791 struct device_attribute *attr, 2792 char *buf) 2793 { 2794 return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask); 2795 } 2796 2797 static ssize_t hotkey_source_mask_store(struct device *dev, 2798 struct device_attribute *attr, 2799 const char *buf, size_t count) 2800 { 2801 unsigned long t; 2802 u32 r_ev; 2803 int rc; 2804 2805 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2806 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2807 return -EINVAL; 2808 2809 if (mutex_lock_killable(&hotkey_mutex)) 2810 return -ERESTARTSYS; 2811 2812 HOTKEY_CONFIG_CRITICAL_START 2813 hotkey_source_mask = t; 2814 HOTKEY_CONFIG_CRITICAL_END 2815 2816 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2817 ~hotkey_source_mask); 2818 hotkey_poll_setup(true); 2819 2820 /* check if events needed by the driver got disabled */ 2821 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2822 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2823 2824 mutex_unlock(&hotkey_mutex); 2825 2826 if (rc < 0) 2827 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2828 2829 if (r_ev) 2830 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2831 r_ev); 2832 2833 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2834 2835 return (rc < 0) ? rc : count; 2836 } 2837 2838 static DEVICE_ATTR_RW(hotkey_source_mask); 2839 2840 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2841 static ssize_t hotkey_poll_freq_show(struct device *dev, 2842 struct device_attribute *attr, 2843 char *buf) 2844 { 2845 return sysfs_emit(buf, "%d\n", hotkey_poll_freq); 2846 } 2847 2848 static ssize_t hotkey_poll_freq_store(struct device *dev, 2849 struct device_attribute *attr, 2850 const char *buf, size_t count) 2851 { 2852 unsigned long t; 2853 2854 if (parse_strtoul(buf, 25, &t)) 2855 return -EINVAL; 2856 2857 if (mutex_lock_killable(&hotkey_mutex)) 2858 return -ERESTARTSYS; 2859 2860 hotkey_poll_set_freq(t); 2861 hotkey_poll_setup(true); 2862 2863 mutex_unlock(&hotkey_mutex); 2864 2865 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2866 2867 return count; 2868 } 2869 2870 static DEVICE_ATTR_RW(hotkey_poll_freq); 2871 2872 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2873 2874 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2875 static ssize_t hotkey_radio_sw_show(struct device *dev, 2876 struct device_attribute *attr, 2877 char *buf) 2878 { 2879 int res; 2880 res = hotkey_get_wlsw(); 2881 if (res < 0) 2882 return res; 2883 2884 /* Opportunistic update */ 2885 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2886 2887 return sysfs_emit(buf, "%d\n", 2888 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2889 } 2890 2891 static DEVICE_ATTR_RO(hotkey_radio_sw); 2892 2893 static void hotkey_radio_sw_notify_change(void) 2894 { 2895 if (tp_features.hotkey_wlsw) 2896 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2897 "hotkey_radio_sw"); 2898 } 2899 2900 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2901 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2902 struct device_attribute *attr, 2903 char *buf) 2904 { 2905 int res, s; 2906 res = hotkey_get_tablet_mode(&s); 2907 if (res < 0) 2908 return res; 2909 2910 return sysfs_emit(buf, "%d\n", !!s); 2911 } 2912 2913 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2914 2915 static void hotkey_tablet_mode_notify_change(void) 2916 { 2917 if (tp_features.hotkey_tablet) 2918 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2919 "hotkey_tablet_mode"); 2920 } 2921 2922 /* sysfs wakeup reason (pollable) -------------------------------------- */ 2923 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 2924 struct device_attribute *attr, 2925 char *buf) 2926 { 2927 return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason); 2928 } 2929 2930 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 2931 2932 static void hotkey_wakeup_reason_notify_change(void) 2933 { 2934 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2935 "wakeup_reason"); 2936 } 2937 2938 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 2939 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 2940 struct device_attribute *attr, 2941 char *buf) 2942 { 2943 return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack); 2944 } 2945 2946 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 2947 hotkey_wakeup_hotunplug_complete_show, NULL); 2948 2949 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 2950 { 2951 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2952 "wakeup_hotunplug_complete"); 2953 } 2954 2955 /* sysfs adaptive kbd mode --------------------------------------------- */ 2956 2957 static int adaptive_keyboard_get_mode(void); 2958 static int adaptive_keyboard_set_mode(int new_mode); 2959 2960 enum ADAPTIVE_KEY_MODE { 2961 HOME_MODE, 2962 WEB_BROWSER_MODE, 2963 WEB_CONFERENCE_MODE, 2964 FUNCTION_MODE, 2965 LAYFLAT_MODE 2966 }; 2967 2968 static ssize_t adaptive_kbd_mode_show(struct device *dev, 2969 struct device_attribute *attr, 2970 char *buf) 2971 { 2972 int current_mode; 2973 2974 current_mode = adaptive_keyboard_get_mode(); 2975 if (current_mode < 0) 2976 return current_mode; 2977 2978 return sysfs_emit(buf, "%d\n", current_mode); 2979 } 2980 2981 static ssize_t adaptive_kbd_mode_store(struct device *dev, 2982 struct device_attribute *attr, 2983 const char *buf, size_t count) 2984 { 2985 unsigned long t; 2986 int res; 2987 2988 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 2989 return -EINVAL; 2990 2991 res = adaptive_keyboard_set_mode(t); 2992 return (res < 0) ? res : count; 2993 } 2994 2995 static DEVICE_ATTR_RW(adaptive_kbd_mode); 2996 2997 static struct attribute *adaptive_kbd_attributes[] = { 2998 &dev_attr_adaptive_kbd_mode.attr, 2999 NULL 3000 }; 3001 3002 static const struct attribute_group adaptive_kbd_attr_group = { 3003 .attrs = adaptive_kbd_attributes, 3004 }; 3005 3006 /* --------------------------------------------------------------------- */ 3007 3008 static struct attribute *hotkey_attributes[] = { 3009 &dev_attr_hotkey_enable.attr, 3010 &dev_attr_hotkey_bios_enabled.attr, 3011 &dev_attr_hotkey_bios_mask.attr, 3012 &dev_attr_wakeup_reason.attr, 3013 &dev_attr_wakeup_hotunplug_complete.attr, 3014 &dev_attr_hotkey_mask.attr, 3015 &dev_attr_hotkey_all_mask.attr, 3016 &dev_attr_hotkey_adaptive_all_mask.attr, 3017 &dev_attr_hotkey_recommended_mask.attr, 3018 &dev_attr_hotkey_tablet_mode.attr, 3019 &dev_attr_hotkey_radio_sw.attr, 3020 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3021 &dev_attr_hotkey_source_mask.attr, 3022 &dev_attr_hotkey_poll_freq.attr, 3023 #endif 3024 NULL 3025 }; 3026 3027 static umode_t hotkey_attr_is_visible(struct kobject *kobj, 3028 struct attribute *attr, int n) 3029 { 3030 if (attr == &dev_attr_hotkey_tablet_mode.attr) { 3031 if (!tp_features.hotkey_tablet) 3032 return 0; 3033 } else if (attr == &dev_attr_hotkey_radio_sw.attr) { 3034 if (!tp_features.hotkey_wlsw) 3035 return 0; 3036 } 3037 3038 return attr->mode; 3039 } 3040 3041 static const struct attribute_group hotkey_attr_group = { 3042 .is_visible = hotkey_attr_is_visible, 3043 .attrs = hotkey_attributes, 3044 }; 3045 3046 /* 3047 * Sync both the hw and sw blocking state of all switches 3048 */ 3049 static void tpacpi_send_radiosw_update(void) 3050 { 3051 int wlsw; 3052 3053 /* 3054 * We must sync all rfkill controllers *before* issuing any 3055 * rfkill input events, or we will race the rfkill core input 3056 * handler. 3057 * 3058 * tpacpi_inputdev_send_mutex works as a synchronization point 3059 * for the above. 3060 * 3061 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3062 */ 3063 3064 wlsw = hotkey_get_wlsw(); 3065 3066 /* Sync hw blocking state first if it is hw-blocked */ 3067 if (wlsw == TPACPI_RFK_RADIO_OFF) 3068 tpacpi_rfk_update_hwblock_state(true); 3069 3070 /* Sync hw blocking state last if it is hw-unblocked */ 3071 if (wlsw == TPACPI_RFK_RADIO_ON) 3072 tpacpi_rfk_update_hwblock_state(false); 3073 3074 /* Issue rfkill input event for WLSW switch */ 3075 if (!(wlsw < 0)) { 3076 mutex_lock(&tpacpi_inputdev_send_mutex); 3077 3078 input_report_switch(tpacpi_inputdev, 3079 SW_RFKILL_ALL, (wlsw > 0)); 3080 input_sync(tpacpi_inputdev); 3081 3082 mutex_unlock(&tpacpi_inputdev_send_mutex); 3083 } 3084 3085 /* 3086 * this can be unconditional, as we will poll state again 3087 * if userspace uses the notify to read data 3088 */ 3089 hotkey_radio_sw_notify_change(); 3090 } 3091 3092 static void hotkey_exit(void) 3093 { 3094 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3095 mutex_lock(&hotkey_mutex); 3096 hotkey_poll_stop_sync(); 3097 mutex_unlock(&hotkey_mutex); 3098 #endif 3099 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &hotkey_attr_group); 3100 3101 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3102 "restoring original HKEY status and mask\n"); 3103 /* yes, there is a bitwise or below, we want the 3104 * functions to be called even if one of them fail */ 3105 if (((tp_features.hotkey_mask && 3106 hotkey_mask_set(hotkey_orig_mask)) | 3107 hotkey_status_set(false)) != 0) 3108 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3109 } 3110 3111 static void __init hotkey_unmap(const unsigned int scancode) 3112 { 3113 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3114 clear_bit(hotkey_keycode_map[scancode], 3115 tpacpi_inputdev->keybit); 3116 hotkey_keycode_map[scancode] = KEY_RESERVED; 3117 } 3118 } 3119 3120 /* 3121 * HKEY quirks: 3122 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3123 */ 3124 3125 #define TPACPI_HK_Q_INIMASK 0x0001 3126 3127 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3128 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3129 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3130 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3131 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3132 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3133 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3134 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3135 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3136 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3137 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3138 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3139 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3140 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3141 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3142 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3143 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3144 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3145 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3146 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3147 }; 3148 3149 typedef u16 tpacpi_keymap_entry_t; 3150 typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; 3151 3152 static int hotkey_init_tablet_mode(void) 3153 { 3154 int in_tablet_mode = 0, res; 3155 char *type = NULL; 3156 3157 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3158 int has_tablet_mode; 3159 3160 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3161 &has_tablet_mode); 3162 /* 3163 * The Yoga 11e series has 2 accelerometers described by a 3164 * BOSC0200 ACPI node. This setup relies on a Windows service 3165 * which calls special ACPI methods on this node to report 3166 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver 3167 * does not support this, so skip the hotkey on these models. 3168 */ 3169 if (has_tablet_mode && !dual_accel_detect()) 3170 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3171 type = "GMMS"; 3172 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3173 /* For X41t, X60t, X61t Tablets... */ 3174 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3175 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3176 type = "MHKG"; 3177 } 3178 3179 if (!tp_features.hotkey_tablet) 3180 return 0; 3181 3182 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3183 type, in_tablet_mode ? "tablet" : "laptop"); 3184 3185 return in_tablet_mode; 3186 } 3187 3188 static int __init hotkey_init(struct ibm_init_struct *iibm) 3189 { 3190 /* Requirements for changing the default keymaps: 3191 * 3192 * 1. Many of the keys are mapped to KEY_RESERVED for very 3193 * good reasons. Do not change them unless you have deep 3194 * knowledge on the IBM and Lenovo ThinkPad firmware for 3195 * the various ThinkPad models. The driver behaves 3196 * differently for KEY_RESERVED: such keys have their 3197 * hot key mask *unset* in mask_recommended, and also 3198 * in the initial hot key mask programmed into the 3199 * firmware at driver load time, which means the firm- 3200 * ware may react very differently if you change them to 3201 * something else; 3202 * 3203 * 2. You must be subscribed to the linux-thinkpad and 3204 * ibm-acpi-devel mailing lists, and you should read the 3205 * list archives since 2007 if you want to change the 3206 * keymaps. This requirement exists so that you will 3207 * know the past history of problems with the thinkpad- 3208 * acpi driver keymaps, and also that you will be 3209 * listening to any bug reports; 3210 * 3211 * 3. Do not send thinkpad-acpi specific patches directly to 3212 * for merging, *ever*. Send them to the linux-acpi 3213 * mailinglist for comments. Merging is to be done only 3214 * through acpi-test and the ACPI maintainer. 3215 * 3216 * If the above is too much to ask, don't change the keymap. 3217 * Ask the thinkpad-acpi maintainer to do it, instead. 3218 */ 3219 3220 enum keymap_index { 3221 TPACPI_KEYMAP_IBM_GENERIC = 0, 3222 TPACPI_KEYMAP_LENOVO_GENERIC, 3223 }; 3224 3225 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3226 /* Generic keymap for IBM ThinkPads */ 3227 [TPACPI_KEYMAP_IBM_GENERIC] = { 3228 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3229 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3230 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3231 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3232 3233 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3234 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3235 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3236 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3237 3238 /* brightness: firmware always reacts to them */ 3239 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3240 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3241 3242 /* Thinklight: firmware always react to it */ 3243 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3244 3245 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3246 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3247 3248 /* Volume: firmware always react to it and reprograms 3249 * the built-in *extra* mixer. Never map it to control 3250 * another mixer by default. */ 3251 KEY_RESERVED, /* 0x14: VOLUME UP */ 3252 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3253 KEY_RESERVED, /* 0x16: MUTE */ 3254 3255 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3256 3257 /* (assignments unknown, please report if found) */ 3258 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3259 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3260 3261 /* No assignments, only used for Adaptive keyboards. */ 3262 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3263 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3264 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3265 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3266 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3267 3268 /* No assignment, used for newer Lenovo models */ 3269 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3270 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3271 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3272 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3273 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3274 KEY_UNKNOWN, KEY_UNKNOWN 3275 3276 }, 3277 3278 /* Generic keymap for Lenovo ThinkPads */ 3279 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3280 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3281 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3282 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3283 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3284 3285 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3286 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3287 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3288 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3289 3290 /* These should be enabled --only-- when ACPI video 3291 * is disabled (i.e. in "vendor" mode), and are handled 3292 * in a special way by the init code */ 3293 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3294 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3295 3296 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3297 3298 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3299 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3300 3301 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3302 * react to it and reprograms the built-in *extra* mixer. 3303 * Never map it to control another mixer by default. 3304 * 3305 * T60?, T61, R60?, R61: firmware and EC tries to send 3306 * these over the regular keyboard, so these are no-ops, 3307 * but there are still weird bugs re. MUTE, so do not 3308 * change unless you get test reports from all Lenovo 3309 * models. May cause the BIOS to interfere with the 3310 * HDA mixer. 3311 */ 3312 KEY_RESERVED, /* 0x14: VOLUME UP */ 3313 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3314 KEY_RESERVED, /* 0x16: MUTE */ 3315 3316 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3317 3318 /* (assignments unknown, please report if found) */ 3319 KEY_UNKNOWN, KEY_UNKNOWN, 3320 3321 /* 3322 * The mic mute button only sends 0x1a. It does not 3323 * automatically mute the mic or change the mute light. 3324 */ 3325 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3326 3327 /* (assignments unknown, please report if found) */ 3328 KEY_UNKNOWN, 3329 3330 /* Extra keys in use since the X240 / T440 / T540 */ 3331 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3332 3333 /* 3334 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3335 * The first item in this list is the Mute button which is 3336 * emitted with 0x103 through 3337 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3338 * symbol is held. 3339 * We'll need to offset those by 0x20. 3340 */ 3341 KEY_RESERVED, /* Mute held, 0x103 */ 3342 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3343 KEY_RESERVED, /* Clipping tool */ 3344 KEY_RESERVED, /* Cloud */ 3345 KEY_RESERVED, 3346 KEY_VOICECOMMAND, /* Voice */ 3347 KEY_RESERVED, 3348 KEY_RESERVED, /* Gestures */ 3349 KEY_RESERVED, 3350 KEY_RESERVED, 3351 KEY_RESERVED, 3352 KEY_CONFIG, /* Settings */ 3353 KEY_RESERVED, /* New tab */ 3354 KEY_REFRESH, /* Reload */ 3355 KEY_BACK, /* Back */ 3356 KEY_RESERVED, /* Microphone down */ 3357 KEY_RESERVED, /* Microphone up */ 3358 KEY_RESERVED, /* Microphone cancellation */ 3359 KEY_RESERVED, /* Camera mode */ 3360 KEY_RESERVED, /* Rotate display, 0x116 */ 3361 3362 /* 3363 * These are found in 2017 models (e.g. T470s, X270). 3364 * The lowest known value is 0x311, which according to 3365 * the manual should launch a user defined favorite 3366 * application. 3367 * 3368 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3369 * corresponding to 0x34. 3370 */ 3371 3372 /* (assignments unknown, please report if found) */ 3373 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3374 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3375 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3376 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3377 KEY_UNKNOWN, 3378 3379 KEY_BOOKMARKS, /* Favorite app, 0x311 */ 3380 KEY_SELECTIVE_SCREENSHOT, /* Clipping tool */ 3381 KEY_CALC, /* Calculator (above numpad, P52) */ 3382 KEY_BLUETOOTH, /* Bluetooth */ 3383 KEY_KEYBOARD, /* Keyboard, 0x315 */ 3384 KEY_FN_RIGHT_SHIFT, /* Fn + right Shift */ 3385 KEY_NOTIFICATION_CENTER, /* Notification Center */ 3386 KEY_PICKUP_PHONE, /* Answer incoming call */ 3387 KEY_HANGUP_PHONE, /* Decline incoming call */ 3388 }, 3389 }; 3390 3391 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3392 /* Generic maps (fallback) */ 3393 { 3394 .vendor = PCI_VENDOR_ID_IBM, 3395 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3396 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3397 }, 3398 { 3399 .vendor = PCI_VENDOR_ID_LENOVO, 3400 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3401 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3402 }, 3403 }; 3404 3405 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3406 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3407 3408 int res, i; 3409 int status; 3410 int hkeyv; 3411 bool radiosw_state = false; 3412 bool tabletsw_state = false; 3413 3414 unsigned long quirks; 3415 unsigned long keymap_id; 3416 3417 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3418 "initializing hotkey subdriver\n"); 3419 3420 BUG_ON(!tpacpi_inputdev); 3421 BUG_ON(tpacpi_inputdev->open != NULL || 3422 tpacpi_inputdev->close != NULL); 3423 3424 TPACPI_ACPIHANDLE_INIT(hkey); 3425 mutex_init(&hotkey_mutex); 3426 3427 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3428 mutex_init(&hotkey_thread_data_mutex); 3429 #endif 3430 3431 /* hotkey not supported on 570 */ 3432 tp_features.hotkey = hkey_handle != NULL; 3433 3434 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3435 "hotkeys are %s\n", 3436 str_supported(tp_features.hotkey)); 3437 3438 if (!tp_features.hotkey) 3439 return 1; 3440 3441 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3442 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3443 3444 tpacpi_disable_brightness_delay(); 3445 3446 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3447 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3448 for HKEY interface version 0x100 */ 3449 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3450 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3451 "firmware HKEY interface version: 0x%x\n", 3452 hkeyv); 3453 3454 switch (hkeyv >> 8) { 3455 case 1: 3456 /* 3457 * MHKV 0x100 in A31, R40, R40e, 3458 * T4x, X31, and later 3459 */ 3460 3461 /* Paranoia check AND init hotkey_all_mask */ 3462 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3463 "MHKA", "qd")) { 3464 pr_err("missing MHKA handler, please report this to %s\n", 3465 TPACPI_MAIL); 3466 /* Fallback: pre-init for FN+F3,F4,F12 */ 3467 hotkey_all_mask = 0x080cU; 3468 } else { 3469 tp_features.hotkey_mask = 1; 3470 } 3471 break; 3472 3473 case 2: 3474 /* 3475 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3476 */ 3477 3478 /* Paranoia check AND init hotkey_all_mask */ 3479 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3480 "MHKA", "dd", 1)) { 3481 pr_err("missing MHKA handler, please report this to %s\n", 3482 TPACPI_MAIL); 3483 /* Fallback: pre-init for FN+F3,F4,F12 */ 3484 hotkey_all_mask = 0x080cU; 3485 } else { 3486 tp_features.hotkey_mask = 1; 3487 } 3488 3489 /* 3490 * Check if we have an adaptive keyboard, like on the 3491 * Lenovo Carbon X1 2014 (2nd Gen). 3492 */ 3493 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3494 "MHKA", "dd", 2)) { 3495 if (hotkey_adaptive_all_mask != 0) { 3496 tp_features.has_adaptive_kbd = true; 3497 res = sysfs_create_group( 3498 &tpacpi_pdev->dev.kobj, 3499 &adaptive_kbd_attr_group); 3500 if (res) 3501 goto err_exit; 3502 } 3503 } else { 3504 tp_features.has_adaptive_kbd = false; 3505 hotkey_adaptive_all_mask = 0x0U; 3506 } 3507 break; 3508 3509 default: 3510 pr_err("unknown version of the HKEY interface: 0x%x\n", 3511 hkeyv); 3512 pr_err("please report this to %s\n", TPACPI_MAIL); 3513 break; 3514 } 3515 } 3516 3517 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3518 "hotkey masks are %s\n", 3519 str_supported(tp_features.hotkey_mask)); 3520 3521 /* Init hotkey_all_mask if not initialized yet */ 3522 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3523 (quirks & TPACPI_HK_Q_INIMASK)) 3524 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3525 3526 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3527 if (tp_features.hotkey_mask) { 3528 /* hotkey_source_mask *must* be zero for 3529 * the first hotkey_mask_get to return hotkey_orig_mask */ 3530 res = hotkey_mask_get(); 3531 if (res) 3532 goto err_exit; 3533 3534 hotkey_orig_mask = hotkey_acpi_mask; 3535 } else { 3536 hotkey_orig_mask = hotkey_all_mask; 3537 hotkey_acpi_mask = hotkey_all_mask; 3538 } 3539 3540 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3541 if (dbg_wlswemul) { 3542 tp_features.hotkey_wlsw = 1; 3543 radiosw_state = !!tpacpi_wlsw_emulstate; 3544 pr_info("radio switch emulation enabled\n"); 3545 } else 3546 #endif 3547 /* Not all thinkpads have a hardware radio switch */ 3548 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3549 tp_features.hotkey_wlsw = 1; 3550 radiosw_state = !!status; 3551 pr_info("radio switch found; radios are %s\n", 3552 enabled(status, 0)); 3553 } 3554 3555 tabletsw_state = hotkey_init_tablet_mode(); 3556 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, &hotkey_attr_group); 3557 if (res) 3558 goto err_exit; 3559 3560 /* Set up key map */ 3561 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3562 ARRAY_SIZE(tpacpi_keymap_qtable)); 3563 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3564 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3565 "using keymap number %lu\n", keymap_id); 3566 3567 hotkey_keycode_map = kmemdup(&tpacpi_keymaps[keymap_id], 3568 TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); 3569 if (!hotkey_keycode_map) { 3570 pr_err("failed to allocate memory for key map\n"); 3571 res = -ENOMEM; 3572 goto err_exit; 3573 } 3574 3575 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3576 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3577 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3578 tpacpi_inputdev->keycode = hotkey_keycode_map; 3579 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3580 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3581 input_set_capability(tpacpi_inputdev, EV_KEY, 3582 hotkey_keycode_map[i]); 3583 } else { 3584 if (i < sizeof(hotkey_reserved_mask)*8) 3585 hotkey_reserved_mask |= 1 << i; 3586 } 3587 } 3588 3589 if (tp_features.hotkey_wlsw) { 3590 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3591 input_report_switch(tpacpi_inputdev, 3592 SW_RFKILL_ALL, radiosw_state); 3593 } 3594 if (tp_features.hotkey_tablet) { 3595 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3596 input_report_switch(tpacpi_inputdev, 3597 SW_TABLET_MODE, tabletsw_state); 3598 } 3599 3600 /* Do not issue duplicate brightness change events to 3601 * userspace. tpacpi_detect_brightness_capabilities() must have 3602 * been called before this point */ 3603 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3604 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3605 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3606 3607 /* Disable brightness up/down on Lenovo thinkpads when 3608 * ACPI is handling them, otherwise it is plain impossible 3609 * for userspace to do something even remotely sane */ 3610 hotkey_reserved_mask |= 3611 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3612 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3613 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3614 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3615 } 3616 3617 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3618 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3619 & ~hotkey_all_mask 3620 & ~hotkey_reserved_mask; 3621 3622 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3623 "hotkey source mask 0x%08x, polling freq %u\n", 3624 hotkey_source_mask, hotkey_poll_freq); 3625 #endif 3626 3627 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3628 "enabling firmware HKEY event interface...\n"); 3629 res = hotkey_status_set(true); 3630 if (res) { 3631 hotkey_exit(); 3632 return res; 3633 } 3634 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3635 | hotkey_driver_mask) 3636 & ~hotkey_source_mask); 3637 if (res < 0 && res != -ENXIO) { 3638 hotkey_exit(); 3639 return res; 3640 } 3641 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3642 & ~hotkey_reserved_mask; 3643 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3644 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3645 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3646 3647 tpacpi_inputdev->open = &hotkey_inputdev_open; 3648 tpacpi_inputdev->close = &hotkey_inputdev_close; 3649 3650 hotkey_poll_setup_safe(true); 3651 3652 return 0; 3653 3654 err_exit: 3655 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &hotkey_attr_group); 3656 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &adaptive_kbd_attr_group); 3657 3658 return (res < 0) ? res : 1; 3659 } 3660 3661 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3662 * mode, Web conference mode, Function mode and Lay-flat mode. 3663 * We support Home mode and Function mode currently. 3664 * 3665 * Will consider support rest of modes in future. 3666 * 3667 */ 3668 static const int adaptive_keyboard_modes[] = { 3669 HOME_MODE, 3670 /* WEB_BROWSER_MODE = 2, 3671 WEB_CONFERENCE_MODE = 3, */ 3672 FUNCTION_MODE 3673 }; 3674 3675 #define DFR_CHANGE_ROW 0x101 3676 #define DFR_SHOW_QUICKVIEW_ROW 0x102 3677 #define FIRST_ADAPTIVE_KEY 0x103 3678 3679 /* press Fn key a while second, it will switch to Function Mode. Then 3680 * release Fn key, previous mode be restored. 3681 */ 3682 static bool adaptive_keyboard_mode_is_saved; 3683 static int adaptive_keyboard_prev_mode; 3684 3685 static int adaptive_keyboard_get_mode(void) 3686 { 3687 int mode = 0; 3688 3689 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3690 pr_err("Cannot read adaptive keyboard mode\n"); 3691 return -EIO; 3692 } 3693 3694 return mode; 3695 } 3696 3697 static int adaptive_keyboard_set_mode(int new_mode) 3698 { 3699 if (new_mode < 0 || 3700 new_mode > LAYFLAT_MODE) 3701 return -EINVAL; 3702 3703 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3704 pr_err("Cannot set adaptive keyboard mode\n"); 3705 return -EIO; 3706 } 3707 3708 return 0; 3709 } 3710 3711 static int adaptive_keyboard_get_next_mode(int mode) 3712 { 3713 size_t i; 3714 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3715 3716 for (i = 0; i <= max_mode; i++) { 3717 if (adaptive_keyboard_modes[i] == mode) 3718 break; 3719 } 3720 3721 if (i >= max_mode) 3722 i = 0; 3723 else 3724 i++; 3725 3726 return adaptive_keyboard_modes[i]; 3727 } 3728 3729 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3730 { 3731 int current_mode = 0; 3732 int new_mode = 0; 3733 int keycode; 3734 3735 switch (scancode) { 3736 case DFR_CHANGE_ROW: 3737 if (adaptive_keyboard_mode_is_saved) { 3738 new_mode = adaptive_keyboard_prev_mode; 3739 adaptive_keyboard_mode_is_saved = false; 3740 } else { 3741 current_mode = adaptive_keyboard_get_mode(); 3742 if (current_mode < 0) 3743 return false; 3744 new_mode = adaptive_keyboard_get_next_mode( 3745 current_mode); 3746 } 3747 3748 if (adaptive_keyboard_set_mode(new_mode) < 0) 3749 return false; 3750 3751 return true; 3752 3753 case DFR_SHOW_QUICKVIEW_ROW: 3754 current_mode = adaptive_keyboard_get_mode(); 3755 if (current_mode < 0) 3756 return false; 3757 3758 adaptive_keyboard_prev_mode = current_mode; 3759 adaptive_keyboard_mode_is_saved = true; 3760 3761 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3762 return false; 3763 return true; 3764 3765 default: 3766 if (scancode < FIRST_ADAPTIVE_KEY || 3767 scancode >= FIRST_ADAPTIVE_KEY + 3768 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3769 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3770 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3771 scancode); 3772 return false; 3773 } 3774 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3775 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3776 if (keycode != KEY_RESERVED) { 3777 mutex_lock(&tpacpi_inputdev_send_mutex); 3778 3779 input_report_key(tpacpi_inputdev, keycode, 1); 3780 input_sync(tpacpi_inputdev); 3781 3782 input_report_key(tpacpi_inputdev, keycode, 0); 3783 input_sync(tpacpi_inputdev); 3784 3785 mutex_unlock(&tpacpi_inputdev_send_mutex); 3786 } 3787 return true; 3788 } 3789 } 3790 3791 static bool hotkey_notify_hotkey(const u32 hkey, 3792 bool *send_acpi_ev, 3793 bool *ignore_acpi_ev) 3794 { 3795 /* 0x1000-0x1FFF: key presses */ 3796 unsigned int scancode = hkey & 0xfff; 3797 *send_acpi_ev = true; 3798 *ignore_acpi_ev = false; 3799 3800 /* 3801 * Original events are in the 0x10XX range, the adaptive keyboard 3802 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3803 * models, additional keys are emitted through 0x13XX. 3804 */ 3805 switch ((hkey >> 8) & 0xf) { 3806 case 0: 3807 if (scancode > 0 && 3808 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3809 /* HKEY event 0x1001 is scancode 0x00 */ 3810 scancode--; 3811 if (!(hotkey_source_mask & (1 << scancode))) { 3812 tpacpi_input_send_key_masked(scancode); 3813 *send_acpi_ev = false; 3814 } else { 3815 *ignore_acpi_ev = true; 3816 } 3817 return true; 3818 } 3819 break; 3820 3821 case 1: 3822 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3823 3824 case 3: 3825 /* Extended keycodes start at 0x300 and our offset into the map 3826 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3827 * will be positive, but might not be in the correct range. 3828 */ 3829 scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3830 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3831 scancode < TPACPI_HOTKEY_MAP_LEN) { 3832 tpacpi_input_send_key(scancode); 3833 return true; 3834 } 3835 break; 3836 } 3837 3838 return false; 3839 } 3840 3841 static bool hotkey_notify_wakeup(const u32 hkey, 3842 bool *send_acpi_ev, 3843 bool *ignore_acpi_ev) 3844 { 3845 /* 0x2000-0x2FFF: Wakeup reason */ 3846 *send_acpi_ev = true; 3847 *ignore_acpi_ev = false; 3848 3849 switch (hkey) { 3850 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3851 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3852 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3853 *ignore_acpi_ev = true; 3854 break; 3855 3856 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3857 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3858 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3859 *ignore_acpi_ev = true; 3860 break; 3861 3862 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3863 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3864 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3865 /* how to auto-heal: */ 3866 /* 2313: woke up from S3, go to S4/S5 */ 3867 /* 2413: woke up from S4, go to S5 */ 3868 break; 3869 3870 default: 3871 return false; 3872 } 3873 3874 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3875 pr_info("woke up due to a hot-unplug request...\n"); 3876 hotkey_wakeup_reason_notify_change(); 3877 } 3878 return true; 3879 } 3880 3881 static bool hotkey_notify_dockevent(const u32 hkey, 3882 bool *send_acpi_ev, 3883 bool *ignore_acpi_ev) 3884 { 3885 /* 0x4000-0x4FFF: dock-related events */ 3886 *send_acpi_ev = true; 3887 *ignore_acpi_ev = false; 3888 3889 switch (hkey) { 3890 case TP_HKEY_EV_UNDOCK_ACK: 3891 /* ACPI undock operation completed after wakeup */ 3892 hotkey_autosleep_ack = 1; 3893 pr_info("undocked\n"); 3894 hotkey_wakeup_hotunplug_complete_notify_change(); 3895 return true; 3896 3897 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3898 pr_info("docked into hotplug port replicator\n"); 3899 return true; 3900 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3901 pr_info("undocked from hotplug port replicator\n"); 3902 return true; 3903 3904 /* 3905 * Deliberately ignore attaching and detaching the keybord cover to avoid 3906 * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events 3907 * to userspace. 3908 * 3909 * Please refer to the following thread for more information and a preliminary 3910 * implementation using the GTOP ("Get Tablet OPtions") interface that could be 3911 * extended to other attachment options of the ThinkPad X1 Tablet series, such as 3912 * the Pico cartridge dock module: 3913 * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/ 3914 */ 3915 case TP_HKEY_EV_KBD_COVER_ATTACH: 3916 case TP_HKEY_EV_KBD_COVER_DETACH: 3917 *send_acpi_ev = false; 3918 *ignore_acpi_ev = true; 3919 return true; 3920 3921 default: 3922 return false; 3923 } 3924 } 3925 3926 static bool hotkey_notify_usrevent(const u32 hkey, 3927 bool *send_acpi_ev, 3928 bool *ignore_acpi_ev) 3929 { 3930 /* 0x5000-0x5FFF: human interface helpers */ 3931 *send_acpi_ev = true; 3932 *ignore_acpi_ev = false; 3933 3934 switch (hkey) { 3935 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 3936 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 3937 return true; 3938 3939 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 3940 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 3941 tpacpi_input_send_tabletsw(); 3942 hotkey_tablet_mode_notify_change(); 3943 *send_acpi_ev = false; 3944 return true; 3945 3946 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 3947 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 3948 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 3949 /* do not propagate these events */ 3950 *ignore_acpi_ev = true; 3951 return true; 3952 3953 default: 3954 return false; 3955 } 3956 } 3957 3958 static void thermal_dump_all_sensors(void); 3959 static void palmsensor_refresh(void); 3960 3961 static bool hotkey_notify_6xxx(const u32 hkey, 3962 bool *send_acpi_ev, 3963 bool *ignore_acpi_ev) 3964 { 3965 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 3966 *send_acpi_ev = true; 3967 *ignore_acpi_ev = false; 3968 3969 switch (hkey) { 3970 case TP_HKEY_EV_THM_TABLE_CHANGED: 3971 pr_debug("EC reports: Thermal Table has changed\n"); 3972 /* recommended action: do nothing, we don't have 3973 * Lenovo ATM information */ 3974 return true; 3975 case TP_HKEY_EV_THM_CSM_COMPLETED: 3976 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 3977 /* Thermal event - pass on to event handler */ 3978 tpacpi_driver_event(hkey); 3979 return true; 3980 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 3981 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 3982 /* recommended action: do nothing, we don't have 3983 * Lenovo ATM information */ 3984 return true; 3985 case TP_HKEY_EV_ALARM_BAT_HOT: 3986 pr_crit("THERMAL ALARM: battery is too hot!\n"); 3987 /* recommended action: warn user through gui */ 3988 break; 3989 case TP_HKEY_EV_ALARM_BAT_XHOT: 3990 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 3991 /* recommended action: immediate sleep/hibernate */ 3992 break; 3993 case TP_HKEY_EV_ALARM_SENSOR_HOT: 3994 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 3995 /* recommended action: warn user through gui, that */ 3996 /* some internal component is too hot */ 3997 break; 3998 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 3999 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 4000 /* recommended action: immediate sleep/hibernate */ 4001 break; 4002 case TP_HKEY_EV_AC_CHANGED: 4003 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 4004 * AC status changed; can be triggered by plugging or 4005 * unplugging AC adapter, docking or undocking. */ 4006 4007 fallthrough; 4008 4009 case TP_HKEY_EV_KEY_NUMLOCK: 4010 case TP_HKEY_EV_KEY_FN: 4011 /* key press events, we just ignore them as long as the EC 4012 * is still reporting them in the normal keyboard stream */ 4013 *send_acpi_ev = false; 4014 *ignore_acpi_ev = true; 4015 return true; 4016 4017 case TP_HKEY_EV_KEY_FN_ESC: 4018 /* Get the media key status to force the status LED to update */ 4019 acpi_evalf(hkey_handle, NULL, "GMKS", "v"); 4020 *send_acpi_ev = false; 4021 *ignore_acpi_ev = true; 4022 return true; 4023 4024 case TP_HKEY_EV_TABLET_CHANGED: 4025 tpacpi_input_send_tabletsw(); 4026 hotkey_tablet_mode_notify_change(); 4027 *send_acpi_ev = false; 4028 return true; 4029 4030 case TP_HKEY_EV_PALM_DETECTED: 4031 case TP_HKEY_EV_PALM_UNDETECTED: 4032 /* palm detected - pass on to event handler */ 4033 palmsensor_refresh(); 4034 return true; 4035 4036 default: 4037 /* report simply as unknown, no sensor dump */ 4038 return false; 4039 } 4040 4041 thermal_dump_all_sensors(); 4042 return true; 4043 } 4044 4045 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 4046 { 4047 u32 hkey; 4048 bool send_acpi_ev; 4049 bool ignore_acpi_ev; 4050 bool known_ev; 4051 4052 if (event != 0x80) { 4053 pr_err("unknown HKEY notification event %d\n", event); 4054 /* forward it to userspace, maybe it knows how to handle it */ 4055 acpi_bus_generate_netlink_event( 4056 ibm->acpi->device->pnp.device_class, 4057 dev_name(&ibm->acpi->device->dev), 4058 event, 0); 4059 return; 4060 } 4061 4062 while (1) { 4063 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4064 pr_err("failed to retrieve HKEY event\n"); 4065 return; 4066 } 4067 4068 if (hkey == 0) { 4069 /* queue empty */ 4070 return; 4071 } 4072 4073 send_acpi_ev = true; 4074 ignore_acpi_ev = false; 4075 4076 switch (hkey >> 12) { 4077 case 1: 4078 /* 0x1000-0x1FFF: key presses */ 4079 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4080 &ignore_acpi_ev); 4081 break; 4082 case 2: 4083 /* 0x2000-0x2FFF: Wakeup reason */ 4084 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4085 &ignore_acpi_ev); 4086 break; 4087 case 3: 4088 /* 0x3000-0x3FFF: bay-related wakeups */ 4089 switch (hkey) { 4090 case TP_HKEY_EV_BAYEJ_ACK: 4091 hotkey_autosleep_ack = 1; 4092 pr_info("bay ejected\n"); 4093 hotkey_wakeup_hotunplug_complete_notify_change(); 4094 known_ev = true; 4095 break; 4096 case TP_HKEY_EV_OPTDRV_EJ: 4097 /* FIXME: kick libata if SATA link offline */ 4098 known_ev = true; 4099 break; 4100 default: 4101 known_ev = false; 4102 } 4103 break; 4104 case 4: 4105 /* 0x4000-0x4FFF: dock-related events */ 4106 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4107 &ignore_acpi_ev); 4108 break; 4109 case 5: 4110 /* 0x5000-0x5FFF: human interface helpers */ 4111 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4112 &ignore_acpi_ev); 4113 break; 4114 case 6: 4115 /* 0x6000-0x6FFF: thermal alarms/notices and 4116 * keyboard events */ 4117 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4118 &ignore_acpi_ev); 4119 break; 4120 case 7: 4121 /* 0x7000-0x7FFF: misc */ 4122 if (tp_features.hotkey_wlsw && 4123 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4124 tpacpi_send_radiosw_update(); 4125 send_acpi_ev = 0; 4126 known_ev = true; 4127 break; 4128 } 4129 fallthrough; /* to default */ 4130 default: 4131 known_ev = false; 4132 } 4133 if (!known_ev) { 4134 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4135 pr_notice("please report the conditions when this event happened to %s\n", 4136 TPACPI_MAIL); 4137 } 4138 4139 /* netlink events */ 4140 if (!ignore_acpi_ev && send_acpi_ev) { 4141 acpi_bus_generate_netlink_event( 4142 ibm->acpi->device->pnp.device_class, 4143 dev_name(&ibm->acpi->device->dev), 4144 event, hkey); 4145 } 4146 } 4147 } 4148 4149 static void hotkey_suspend(void) 4150 { 4151 /* Do these on suspend, we get the events on early resume! */ 4152 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4153 hotkey_autosleep_ack = 0; 4154 4155 /* save previous mode of adaptive keyboard of X1 Carbon */ 4156 if (tp_features.has_adaptive_kbd) { 4157 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4158 "GTRW", "dd", 0)) { 4159 pr_err("Cannot read adaptive keyboard mode.\n"); 4160 } 4161 } 4162 } 4163 4164 static void hotkey_resume(void) 4165 { 4166 tpacpi_disable_brightness_delay(); 4167 4168 if (hotkey_status_set(true) < 0 || 4169 hotkey_mask_set(hotkey_acpi_mask) < 0) 4170 pr_err("error while attempting to reset the event firmware interface\n"); 4171 4172 tpacpi_send_radiosw_update(); 4173 tpacpi_input_send_tabletsw(); 4174 hotkey_tablet_mode_notify_change(); 4175 hotkey_wakeup_reason_notify_change(); 4176 hotkey_wakeup_hotunplug_complete_notify_change(); 4177 hotkey_poll_setup_safe(false); 4178 4179 /* restore previous mode of adapive keyboard of X1 Carbon */ 4180 if (tp_features.has_adaptive_kbd) { 4181 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4182 adaptive_keyboard_prev_mode)) { 4183 pr_err("Cannot set adaptive keyboard mode.\n"); 4184 } 4185 } 4186 } 4187 4188 /* procfs -------------------------------------------------------------- */ 4189 static int hotkey_read(struct seq_file *m) 4190 { 4191 int res, status; 4192 4193 if (!tp_features.hotkey) { 4194 seq_printf(m, "status:\t\tnot supported\n"); 4195 return 0; 4196 } 4197 4198 if (mutex_lock_killable(&hotkey_mutex)) 4199 return -ERESTARTSYS; 4200 res = hotkey_status_get(&status); 4201 if (!res) 4202 res = hotkey_mask_get(); 4203 mutex_unlock(&hotkey_mutex); 4204 if (res) 4205 return res; 4206 4207 seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); 4208 if (hotkey_all_mask) { 4209 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4210 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4211 } else { 4212 seq_printf(m, "mask:\t\tnot supported\n"); 4213 seq_printf(m, "commands:\tenable, disable, reset\n"); 4214 } 4215 4216 return 0; 4217 } 4218 4219 static void hotkey_enabledisable_warn(bool enable) 4220 { 4221 tpacpi_log_usertask("procfs hotkey enable/disable"); 4222 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4223 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4224 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4225 } 4226 4227 static int hotkey_write(char *buf) 4228 { 4229 int res; 4230 u32 mask; 4231 char *cmd; 4232 4233 if (!tp_features.hotkey) 4234 return -ENODEV; 4235 4236 if (mutex_lock_killable(&hotkey_mutex)) 4237 return -ERESTARTSYS; 4238 4239 mask = hotkey_user_mask; 4240 4241 res = 0; 4242 while ((cmd = strsep(&buf, ","))) { 4243 if (strlencmp(cmd, "enable") == 0) { 4244 hotkey_enabledisable_warn(1); 4245 } else if (strlencmp(cmd, "disable") == 0) { 4246 hotkey_enabledisable_warn(0); 4247 res = -EPERM; 4248 } else if (strlencmp(cmd, "reset") == 0) { 4249 mask = (hotkey_all_mask | hotkey_source_mask) 4250 & ~hotkey_reserved_mask; 4251 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4252 /* mask set */ 4253 } else if (sscanf(cmd, "%x", &mask) == 1) { 4254 /* mask set */ 4255 } else { 4256 res = -EINVAL; 4257 goto errexit; 4258 } 4259 } 4260 4261 if (!res) { 4262 tpacpi_disclose_usertask("procfs hotkey", 4263 "set mask to 0x%08x\n", mask); 4264 res = hotkey_user_mask_set(mask); 4265 } 4266 4267 errexit: 4268 mutex_unlock(&hotkey_mutex); 4269 return res; 4270 } 4271 4272 static const struct acpi_device_id ibm_htk_device_ids[] = { 4273 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4274 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4275 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4276 {"", 0}, 4277 }; 4278 4279 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4280 .hid = ibm_htk_device_ids, 4281 .notify = hotkey_notify, 4282 .handle = &hkey_handle, 4283 .type = ACPI_DEVICE_NOTIFY, 4284 }; 4285 4286 static struct ibm_struct hotkey_driver_data = { 4287 .name = "hotkey", 4288 .read = hotkey_read, 4289 .write = hotkey_write, 4290 .exit = hotkey_exit, 4291 .resume = hotkey_resume, 4292 .suspend = hotkey_suspend, 4293 .acpi = &ibm_hotkey_acpidriver, 4294 }; 4295 4296 /************************************************************************* 4297 * Bluetooth subdriver 4298 */ 4299 4300 enum { 4301 /* ACPI GBDC/SBDC bits */ 4302 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4303 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4304 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4305 0 = disable, 1 = enable */ 4306 }; 4307 4308 enum { 4309 /* ACPI \BLTH commands */ 4310 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4311 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4312 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4313 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4314 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4315 }; 4316 4317 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4318 4319 static int bluetooth_get_status(void) 4320 { 4321 int status; 4322 4323 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4324 if (dbg_bluetoothemul) 4325 return (tpacpi_bluetooth_emulstate) ? 4326 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4327 #endif 4328 4329 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4330 return -EIO; 4331 4332 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4333 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4334 } 4335 4336 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4337 { 4338 int status; 4339 4340 vdbg_printk(TPACPI_DBG_RFKILL, 4341 "will attempt to %s bluetooth\n", 4342 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4343 4344 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4345 if (dbg_bluetoothemul) { 4346 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4347 return 0; 4348 } 4349 #endif 4350 4351 if (state == TPACPI_RFK_RADIO_ON) 4352 status = TP_ACPI_BLUETOOTH_RADIOSSW 4353 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4354 else 4355 status = 0; 4356 4357 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4358 return -EIO; 4359 4360 return 0; 4361 } 4362 4363 /* sysfs bluetooth enable ---------------------------------------------- */ 4364 static ssize_t bluetooth_enable_show(struct device *dev, 4365 struct device_attribute *attr, 4366 char *buf) 4367 { 4368 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4369 attr, buf); 4370 } 4371 4372 static ssize_t bluetooth_enable_store(struct device *dev, 4373 struct device_attribute *attr, 4374 const char *buf, size_t count) 4375 { 4376 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4377 attr, buf, count); 4378 } 4379 4380 static DEVICE_ATTR_RW(bluetooth_enable); 4381 4382 /* --------------------------------------------------------------------- */ 4383 4384 static struct attribute *bluetooth_attributes[] = { 4385 &dev_attr_bluetooth_enable.attr, 4386 NULL 4387 }; 4388 4389 static const struct attribute_group bluetooth_attr_group = { 4390 .attrs = bluetooth_attributes, 4391 }; 4392 4393 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4394 .get_status = bluetooth_get_status, 4395 .set_status = bluetooth_set_status, 4396 }; 4397 4398 static void bluetooth_shutdown(void) 4399 { 4400 /* Order firmware to save current state to NVRAM */ 4401 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4402 TP_ACPI_BLTH_SAVE_STATE)) 4403 pr_notice("failed to save bluetooth state to NVRAM\n"); 4404 else 4405 vdbg_printk(TPACPI_DBG_RFKILL, 4406 "bluetooth state saved to NVRAM\n"); 4407 } 4408 4409 static void bluetooth_exit(void) 4410 { 4411 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4412 &bluetooth_attr_group); 4413 4414 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4415 4416 bluetooth_shutdown(); 4417 } 4418 4419 static const struct dmi_system_id bt_fwbug_list[] __initconst = { 4420 { 4421 .ident = "ThinkPad E485", 4422 .matches = { 4423 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4424 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4425 }, 4426 }, 4427 { 4428 .ident = "ThinkPad E585", 4429 .matches = { 4430 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4431 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4432 }, 4433 }, 4434 { 4435 .ident = "ThinkPad A285 - 20MW", 4436 .matches = { 4437 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4438 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4439 }, 4440 }, 4441 { 4442 .ident = "ThinkPad A285 - 20MX", 4443 .matches = { 4444 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4445 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4446 }, 4447 }, 4448 { 4449 .ident = "ThinkPad A485 - 20MU", 4450 .matches = { 4451 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4452 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4453 }, 4454 }, 4455 { 4456 .ident = "ThinkPad A485 - 20MV", 4457 .matches = { 4458 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4459 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4460 }, 4461 }, 4462 {} 4463 }; 4464 4465 static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4466 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4467 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4468 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4469 {} 4470 }; 4471 4472 4473 static int __init have_bt_fwbug(void) 4474 { 4475 /* 4476 * Some AMD based ThinkPads have a firmware bug that calling 4477 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4478 */ 4479 if (dmi_check_system(bt_fwbug_list) && pci_dev_present(fwbug_cards_ids)) { 4480 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4481 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4482 return 1; 4483 } else 4484 return 0; 4485 } 4486 4487 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4488 { 4489 int res; 4490 int status = 0; 4491 4492 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4493 "initializing bluetooth subdriver\n"); 4494 4495 TPACPI_ACPIHANDLE_INIT(hkey); 4496 4497 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4498 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4499 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4500 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4501 4502 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4503 "bluetooth is %s, status 0x%02x\n", 4504 str_supported(tp_features.bluetooth), 4505 status); 4506 4507 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4508 if (dbg_bluetoothemul) { 4509 tp_features.bluetooth = 1; 4510 pr_info("bluetooth switch emulation enabled\n"); 4511 } else 4512 #endif 4513 if (tp_features.bluetooth && 4514 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4515 /* no bluetooth hardware present in system */ 4516 tp_features.bluetooth = 0; 4517 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4518 "bluetooth hardware not installed\n"); 4519 } 4520 4521 if (!tp_features.bluetooth) 4522 return 1; 4523 4524 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4525 &bluetooth_tprfk_ops, 4526 RFKILL_TYPE_BLUETOOTH, 4527 TPACPI_RFK_BLUETOOTH_SW_NAME, 4528 true); 4529 if (res) 4530 return res; 4531 4532 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4533 &bluetooth_attr_group); 4534 if (res) { 4535 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4536 return res; 4537 } 4538 4539 return 0; 4540 } 4541 4542 /* procfs -------------------------------------------------------------- */ 4543 static int bluetooth_read(struct seq_file *m) 4544 { 4545 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4546 } 4547 4548 static int bluetooth_write(char *buf) 4549 { 4550 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4551 } 4552 4553 static struct ibm_struct bluetooth_driver_data = { 4554 .name = "bluetooth", 4555 .read = bluetooth_read, 4556 .write = bluetooth_write, 4557 .exit = bluetooth_exit, 4558 .shutdown = bluetooth_shutdown, 4559 }; 4560 4561 /************************************************************************* 4562 * Wan subdriver 4563 */ 4564 4565 enum { 4566 /* ACPI GWAN/SWAN bits */ 4567 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4568 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4569 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4570 0 = disable, 1 = enable */ 4571 }; 4572 4573 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4574 4575 static int wan_get_status(void) 4576 { 4577 int status; 4578 4579 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4580 if (dbg_wwanemul) 4581 return (tpacpi_wwan_emulstate) ? 4582 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4583 #endif 4584 4585 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4586 return -EIO; 4587 4588 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4589 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4590 } 4591 4592 static int wan_set_status(enum tpacpi_rfkill_state state) 4593 { 4594 int status; 4595 4596 vdbg_printk(TPACPI_DBG_RFKILL, 4597 "will attempt to %s wwan\n", 4598 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4599 4600 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4601 if (dbg_wwanemul) { 4602 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4603 return 0; 4604 } 4605 #endif 4606 4607 if (state == TPACPI_RFK_RADIO_ON) 4608 status = TP_ACPI_WANCARD_RADIOSSW 4609 | TP_ACPI_WANCARD_RESUMECTRL; 4610 else 4611 status = 0; 4612 4613 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4614 return -EIO; 4615 4616 return 0; 4617 } 4618 4619 /* sysfs wan enable ---------------------------------------------------- */ 4620 static ssize_t wan_enable_show(struct device *dev, 4621 struct device_attribute *attr, 4622 char *buf) 4623 { 4624 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4625 attr, buf); 4626 } 4627 4628 static ssize_t wan_enable_store(struct device *dev, 4629 struct device_attribute *attr, 4630 const char *buf, size_t count) 4631 { 4632 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4633 attr, buf, count); 4634 } 4635 4636 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4637 wan_enable_show, wan_enable_store); 4638 4639 /* --------------------------------------------------------------------- */ 4640 4641 static struct attribute *wan_attributes[] = { 4642 &dev_attr_wwan_enable.attr, 4643 NULL 4644 }; 4645 4646 static const struct attribute_group wan_attr_group = { 4647 .attrs = wan_attributes, 4648 }; 4649 4650 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4651 .get_status = wan_get_status, 4652 .set_status = wan_set_status, 4653 }; 4654 4655 static void wan_shutdown(void) 4656 { 4657 /* Order firmware to save current state to NVRAM */ 4658 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4659 TP_ACPI_WGSV_SAVE_STATE)) 4660 pr_notice("failed to save WWAN state to NVRAM\n"); 4661 else 4662 vdbg_printk(TPACPI_DBG_RFKILL, 4663 "WWAN state saved to NVRAM\n"); 4664 } 4665 4666 static void wan_exit(void) 4667 { 4668 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4669 &wan_attr_group); 4670 4671 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4672 4673 wan_shutdown(); 4674 } 4675 4676 static int __init wan_init(struct ibm_init_struct *iibm) 4677 { 4678 int res; 4679 int status = 0; 4680 4681 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4682 "initializing wan subdriver\n"); 4683 4684 TPACPI_ACPIHANDLE_INIT(hkey); 4685 4686 tp_features.wan = hkey_handle && 4687 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4688 4689 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4690 "wan is %s, status 0x%02x\n", 4691 str_supported(tp_features.wan), 4692 status); 4693 4694 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4695 if (dbg_wwanemul) { 4696 tp_features.wan = 1; 4697 pr_info("wwan switch emulation enabled\n"); 4698 } else 4699 #endif 4700 if (tp_features.wan && 4701 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4702 /* no wan hardware present in system */ 4703 tp_features.wan = 0; 4704 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4705 "wan hardware not installed\n"); 4706 } 4707 4708 if (!tp_features.wan) 4709 return 1; 4710 4711 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4712 &wan_tprfk_ops, 4713 RFKILL_TYPE_WWAN, 4714 TPACPI_RFK_WWAN_SW_NAME, 4715 true); 4716 if (res) 4717 return res; 4718 4719 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4720 &wan_attr_group); 4721 4722 if (res) { 4723 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4724 return res; 4725 } 4726 4727 return 0; 4728 } 4729 4730 /* procfs -------------------------------------------------------------- */ 4731 static int wan_read(struct seq_file *m) 4732 { 4733 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4734 } 4735 4736 static int wan_write(char *buf) 4737 { 4738 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4739 } 4740 4741 static struct ibm_struct wan_driver_data = { 4742 .name = "wan", 4743 .read = wan_read, 4744 .write = wan_write, 4745 .exit = wan_exit, 4746 .shutdown = wan_shutdown, 4747 }; 4748 4749 /************************************************************************* 4750 * UWB subdriver 4751 */ 4752 4753 enum { 4754 /* ACPI GUWB/SUWB bits */ 4755 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4756 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4757 }; 4758 4759 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4760 4761 static int uwb_get_status(void) 4762 { 4763 int status; 4764 4765 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4766 if (dbg_uwbemul) 4767 return (tpacpi_uwb_emulstate) ? 4768 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4769 #endif 4770 4771 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4772 return -EIO; 4773 4774 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4775 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4776 } 4777 4778 static int uwb_set_status(enum tpacpi_rfkill_state state) 4779 { 4780 int status; 4781 4782 vdbg_printk(TPACPI_DBG_RFKILL, 4783 "will attempt to %s UWB\n", 4784 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4785 4786 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4787 if (dbg_uwbemul) { 4788 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4789 return 0; 4790 } 4791 #endif 4792 4793 if (state == TPACPI_RFK_RADIO_ON) 4794 status = TP_ACPI_UWB_RADIOSSW; 4795 else 4796 status = 0; 4797 4798 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4799 return -EIO; 4800 4801 return 0; 4802 } 4803 4804 /* --------------------------------------------------------------------- */ 4805 4806 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4807 .get_status = uwb_get_status, 4808 .set_status = uwb_set_status, 4809 }; 4810 4811 static void uwb_exit(void) 4812 { 4813 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4814 } 4815 4816 static int __init uwb_init(struct ibm_init_struct *iibm) 4817 { 4818 int res; 4819 int status = 0; 4820 4821 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4822 "initializing uwb subdriver\n"); 4823 4824 TPACPI_ACPIHANDLE_INIT(hkey); 4825 4826 tp_features.uwb = hkey_handle && 4827 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4828 4829 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4830 "uwb is %s, status 0x%02x\n", 4831 str_supported(tp_features.uwb), 4832 status); 4833 4834 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4835 if (dbg_uwbemul) { 4836 tp_features.uwb = 1; 4837 pr_info("uwb switch emulation enabled\n"); 4838 } else 4839 #endif 4840 if (tp_features.uwb && 4841 !(status & TP_ACPI_UWB_HWPRESENT)) { 4842 /* no uwb hardware present in system */ 4843 tp_features.uwb = 0; 4844 dbg_printk(TPACPI_DBG_INIT, 4845 "uwb hardware not installed\n"); 4846 } 4847 4848 if (!tp_features.uwb) 4849 return 1; 4850 4851 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4852 &uwb_tprfk_ops, 4853 RFKILL_TYPE_UWB, 4854 TPACPI_RFK_UWB_SW_NAME, 4855 false); 4856 return res; 4857 } 4858 4859 static struct ibm_struct uwb_driver_data = { 4860 .name = "uwb", 4861 .exit = uwb_exit, 4862 .flags.experimental = 1, 4863 }; 4864 4865 /************************************************************************* 4866 * Video subdriver 4867 */ 4868 4869 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4870 4871 enum video_access_mode { 4872 TPACPI_VIDEO_NONE = 0, 4873 TPACPI_VIDEO_570, /* 570 */ 4874 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4875 TPACPI_VIDEO_NEW, /* all others */ 4876 }; 4877 4878 enum { /* video status flags, based on VIDEO_570 */ 4879 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4880 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4881 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4882 }; 4883 4884 enum { /* TPACPI_VIDEO_570 constants */ 4885 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4886 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4887 * video_status_flags */ 4888 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4889 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4890 }; 4891 4892 static enum video_access_mode video_supported; 4893 static int video_orig_autosw; 4894 4895 static int video_autosw_get(void); 4896 static int video_autosw_set(int enable); 4897 4898 TPACPI_HANDLE(vid, root, 4899 "\\_SB.PCI.AGP.VGA", /* 570 */ 4900 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4901 "\\_SB.PCI0.VID0", /* 770e */ 4902 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4903 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4904 "\\_SB.PCI0.AGP.VID", /* all others */ 4905 ); /* R30, R31 */ 4906 4907 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4908 4909 static int __init video_init(struct ibm_init_struct *iibm) 4910 { 4911 int ivga; 4912 4913 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4914 4915 TPACPI_ACPIHANDLE_INIT(vid); 4916 if (tpacpi_is_ibm()) 4917 TPACPI_ACPIHANDLE_INIT(vid2); 4918 4919 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4920 /* G41, assume IVGA doesn't change */ 4921 vid_handle = vid2_handle; 4922 4923 if (!vid_handle) 4924 /* video switching not supported on R30, R31 */ 4925 video_supported = TPACPI_VIDEO_NONE; 4926 else if (tpacpi_is_ibm() && 4927 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4928 /* 570 */ 4929 video_supported = TPACPI_VIDEO_570; 4930 else if (tpacpi_is_ibm() && 4931 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4932 /* 600e/x, 770e, 770x */ 4933 video_supported = TPACPI_VIDEO_770; 4934 else 4935 /* all others */ 4936 video_supported = TPACPI_VIDEO_NEW; 4937 4938 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4939 str_supported(video_supported != TPACPI_VIDEO_NONE), 4940 video_supported); 4941 4942 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1; 4943 } 4944 4945 static void video_exit(void) 4946 { 4947 dbg_printk(TPACPI_DBG_EXIT, 4948 "restoring original video autoswitch mode\n"); 4949 if (video_autosw_set(video_orig_autosw)) 4950 pr_err("error while trying to restore original video autoswitch mode\n"); 4951 } 4952 4953 static int video_outputsw_get(void) 4954 { 4955 int status = 0; 4956 int i; 4957 4958 switch (video_supported) { 4959 case TPACPI_VIDEO_570: 4960 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 4961 TP_ACPI_VIDEO_570_PHSCMD)) 4962 return -EIO; 4963 status = i & TP_ACPI_VIDEO_570_PHSMASK; 4964 break; 4965 case TPACPI_VIDEO_770: 4966 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 4967 return -EIO; 4968 if (i) 4969 status |= TP_ACPI_VIDEO_S_LCD; 4970 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 4971 return -EIO; 4972 if (i) 4973 status |= TP_ACPI_VIDEO_S_CRT; 4974 break; 4975 case TPACPI_VIDEO_NEW: 4976 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 4977 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 4978 return -EIO; 4979 if (i) 4980 status |= TP_ACPI_VIDEO_S_CRT; 4981 4982 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 4983 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 4984 return -EIO; 4985 if (i) 4986 status |= TP_ACPI_VIDEO_S_LCD; 4987 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 4988 return -EIO; 4989 if (i) 4990 status |= TP_ACPI_VIDEO_S_DVI; 4991 break; 4992 default: 4993 return -ENOSYS; 4994 } 4995 4996 return status; 4997 } 4998 4999 static int video_outputsw_set(int status) 5000 { 5001 int autosw; 5002 int res = 0; 5003 5004 switch (video_supported) { 5005 case TPACPI_VIDEO_570: 5006 res = acpi_evalf(NULL, NULL, 5007 "\\_SB.PHS2", "vdd", 5008 TP_ACPI_VIDEO_570_PHS2CMD, 5009 status | TP_ACPI_VIDEO_570_PHS2SET); 5010 break; 5011 case TPACPI_VIDEO_770: 5012 autosw = video_autosw_get(); 5013 if (autosw < 0) 5014 return autosw; 5015 5016 res = video_autosw_set(1); 5017 if (res) 5018 return res; 5019 res = acpi_evalf(vid_handle, NULL, 5020 "ASWT", "vdd", status * 0x100, 0); 5021 if (!autosw && video_autosw_set(autosw)) { 5022 pr_err("video auto-switch left enabled due to error\n"); 5023 return -EIO; 5024 } 5025 break; 5026 case TPACPI_VIDEO_NEW: 5027 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 5028 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 5029 break; 5030 default: 5031 return -ENOSYS; 5032 } 5033 5034 return (res) ? 0 : -EIO; 5035 } 5036 5037 static int video_autosw_get(void) 5038 { 5039 int autosw = 0; 5040 5041 switch (video_supported) { 5042 case TPACPI_VIDEO_570: 5043 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 5044 return -EIO; 5045 break; 5046 case TPACPI_VIDEO_770: 5047 case TPACPI_VIDEO_NEW: 5048 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 5049 return -EIO; 5050 break; 5051 default: 5052 return -ENOSYS; 5053 } 5054 5055 return autosw & 1; 5056 } 5057 5058 static int video_autosw_set(int enable) 5059 { 5060 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 5061 return -EIO; 5062 return 0; 5063 } 5064 5065 static int video_outputsw_cycle(void) 5066 { 5067 int autosw = video_autosw_get(); 5068 int res; 5069 5070 if (autosw < 0) 5071 return autosw; 5072 5073 switch (video_supported) { 5074 case TPACPI_VIDEO_570: 5075 res = video_autosw_set(1); 5076 if (res) 5077 return res; 5078 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5079 break; 5080 case TPACPI_VIDEO_770: 5081 case TPACPI_VIDEO_NEW: 5082 res = video_autosw_set(1); 5083 if (res) 5084 return res; 5085 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5086 break; 5087 default: 5088 return -ENOSYS; 5089 } 5090 if (!autosw && video_autosw_set(autosw)) { 5091 pr_err("video auto-switch left enabled due to error\n"); 5092 return -EIO; 5093 } 5094 5095 return (res) ? 0 : -EIO; 5096 } 5097 5098 static int video_expand_toggle(void) 5099 { 5100 switch (video_supported) { 5101 case TPACPI_VIDEO_570: 5102 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5103 0 : -EIO; 5104 case TPACPI_VIDEO_770: 5105 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5106 0 : -EIO; 5107 case TPACPI_VIDEO_NEW: 5108 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5109 0 : -EIO; 5110 default: 5111 return -ENOSYS; 5112 } 5113 /* not reached */ 5114 } 5115 5116 static int video_read(struct seq_file *m) 5117 { 5118 int status, autosw; 5119 5120 if (video_supported == TPACPI_VIDEO_NONE) { 5121 seq_printf(m, "status:\t\tnot supported\n"); 5122 return 0; 5123 } 5124 5125 /* Even reads can crash X.org, so... */ 5126 if (!capable(CAP_SYS_ADMIN)) 5127 return -EPERM; 5128 5129 status = video_outputsw_get(); 5130 if (status < 0) 5131 return status; 5132 5133 autosw = video_autosw_get(); 5134 if (autosw < 0) 5135 return autosw; 5136 5137 seq_printf(m, "status:\t\tsupported\n"); 5138 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); 5139 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); 5140 if (video_supported == TPACPI_VIDEO_NEW) 5141 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); 5142 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); 5143 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5144 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5145 if (video_supported == TPACPI_VIDEO_NEW) 5146 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5147 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5148 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5149 5150 return 0; 5151 } 5152 5153 static int video_write(char *buf) 5154 { 5155 char *cmd; 5156 int enable, disable, status; 5157 int res; 5158 5159 if (video_supported == TPACPI_VIDEO_NONE) 5160 return -ENODEV; 5161 5162 /* Even reads can crash X.org, let alone writes... */ 5163 if (!capable(CAP_SYS_ADMIN)) 5164 return -EPERM; 5165 5166 enable = 0; 5167 disable = 0; 5168 5169 while ((cmd = strsep(&buf, ","))) { 5170 if (strlencmp(cmd, "lcd_enable") == 0) { 5171 enable |= TP_ACPI_VIDEO_S_LCD; 5172 } else if (strlencmp(cmd, "lcd_disable") == 0) { 5173 disable |= TP_ACPI_VIDEO_S_LCD; 5174 } else if (strlencmp(cmd, "crt_enable") == 0) { 5175 enable |= TP_ACPI_VIDEO_S_CRT; 5176 } else if (strlencmp(cmd, "crt_disable") == 0) { 5177 disable |= TP_ACPI_VIDEO_S_CRT; 5178 } else if (video_supported == TPACPI_VIDEO_NEW && 5179 strlencmp(cmd, "dvi_enable") == 0) { 5180 enable |= TP_ACPI_VIDEO_S_DVI; 5181 } else if (video_supported == TPACPI_VIDEO_NEW && 5182 strlencmp(cmd, "dvi_disable") == 0) { 5183 disable |= TP_ACPI_VIDEO_S_DVI; 5184 } else if (strlencmp(cmd, "auto_enable") == 0) { 5185 res = video_autosw_set(1); 5186 if (res) 5187 return res; 5188 } else if (strlencmp(cmd, "auto_disable") == 0) { 5189 res = video_autosw_set(0); 5190 if (res) 5191 return res; 5192 } else if (strlencmp(cmd, "video_switch") == 0) { 5193 res = video_outputsw_cycle(); 5194 if (res) 5195 return res; 5196 } else if (strlencmp(cmd, "expand_toggle") == 0) { 5197 res = video_expand_toggle(); 5198 if (res) 5199 return res; 5200 } else 5201 return -EINVAL; 5202 } 5203 5204 if (enable || disable) { 5205 status = video_outputsw_get(); 5206 if (status < 0) 5207 return status; 5208 res = video_outputsw_set((status & ~disable) | enable); 5209 if (res) 5210 return res; 5211 } 5212 5213 return 0; 5214 } 5215 5216 static struct ibm_struct video_driver_data = { 5217 .name = "video", 5218 .read = video_read, 5219 .write = video_write, 5220 .exit = video_exit, 5221 }; 5222 5223 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5224 5225 /************************************************************************* 5226 * Keyboard backlight subdriver 5227 */ 5228 5229 static enum led_brightness kbdlight_brightness; 5230 static DEFINE_MUTEX(kbdlight_mutex); 5231 5232 static int kbdlight_set_level(int level) 5233 { 5234 int ret = 0; 5235 5236 if (!hkey_handle) 5237 return -ENXIO; 5238 5239 mutex_lock(&kbdlight_mutex); 5240 5241 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5242 ret = -EIO; 5243 else 5244 kbdlight_brightness = level; 5245 5246 mutex_unlock(&kbdlight_mutex); 5247 5248 return ret; 5249 } 5250 5251 static int kbdlight_get_level(void) 5252 { 5253 int status = 0; 5254 5255 if (!hkey_handle) 5256 return -ENXIO; 5257 5258 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5259 return -EIO; 5260 5261 if (status < 0) 5262 return status; 5263 5264 return status & 0x3; 5265 } 5266 5267 static bool kbdlight_is_supported(void) 5268 { 5269 int status = 0; 5270 5271 if (!hkey_handle) 5272 return false; 5273 5274 if (!acpi_has_method(hkey_handle, "MLCG")) { 5275 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5276 return false; 5277 } 5278 5279 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5280 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5281 return false; 5282 } 5283 5284 if (status < 0) { 5285 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5286 return false; 5287 } 5288 5289 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5290 /* 5291 * Guessed test for keyboard backlight: 5292 * 5293 * Machines with backlight keyboard return: 5294 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5295 * b110100010010000000XX - ThinkPad x230 5296 * b010100000010000000XX - ThinkPad x240 5297 * b010100000010000000XX - ThinkPad W541 5298 * (XX is current backlight level) 5299 * 5300 * Machines without backlight keyboard return: 5301 * b10100001000000000000 - ThinkPad x230 5302 * b10110001000000000000 - ThinkPad E430 5303 * b00000000000000000000 - ThinkPad E450 5304 * 5305 * Candidate BITs for detection test (XOR): 5306 * b01000000001000000000 5307 * ^ 5308 */ 5309 return status & BIT(9); 5310 } 5311 5312 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5313 enum led_brightness brightness) 5314 { 5315 return kbdlight_set_level(brightness); 5316 } 5317 5318 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5319 { 5320 int level; 5321 5322 level = kbdlight_get_level(); 5323 if (level < 0) 5324 return 0; 5325 5326 return level; 5327 } 5328 5329 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5330 .led_classdev = { 5331 .name = "tpacpi::kbd_backlight", 5332 .max_brightness = 2, 5333 .flags = LED_BRIGHT_HW_CHANGED, 5334 .brightness_set_blocking = &kbdlight_sysfs_set, 5335 .brightness_get = &kbdlight_sysfs_get, 5336 } 5337 }; 5338 5339 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5340 { 5341 int rc; 5342 5343 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5344 5345 TPACPI_ACPIHANDLE_INIT(hkey); 5346 5347 if (!kbdlight_is_supported()) { 5348 tp_features.kbdlight = 0; 5349 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5350 return 1; 5351 } 5352 5353 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5354 tp_features.kbdlight = 1; 5355 5356 rc = led_classdev_register(&tpacpi_pdev->dev, 5357 &tpacpi_led_kbdlight.led_classdev); 5358 if (rc < 0) { 5359 tp_features.kbdlight = 0; 5360 return rc; 5361 } 5362 5363 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5364 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5365 return 0; 5366 } 5367 5368 static void kbdlight_exit(void) 5369 { 5370 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5371 } 5372 5373 static int kbdlight_set_level_and_update(int level) 5374 { 5375 int ret; 5376 struct led_classdev *led_cdev; 5377 5378 ret = kbdlight_set_level(level); 5379 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5380 5381 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5382 led_cdev->brightness = level; 5383 5384 return ret; 5385 } 5386 5387 static int kbdlight_read(struct seq_file *m) 5388 { 5389 int level; 5390 5391 if (!tp_features.kbdlight) { 5392 seq_printf(m, "status:\t\tnot supported\n"); 5393 } else { 5394 level = kbdlight_get_level(); 5395 if (level < 0) 5396 seq_printf(m, "status:\t\terror %d\n", level); 5397 else 5398 seq_printf(m, "status:\t\t%d\n", level); 5399 seq_printf(m, "commands:\t0, 1, 2\n"); 5400 } 5401 5402 return 0; 5403 } 5404 5405 static int kbdlight_write(char *buf) 5406 { 5407 char *cmd; 5408 int res, level = -EINVAL; 5409 5410 if (!tp_features.kbdlight) 5411 return -ENODEV; 5412 5413 while ((cmd = strsep(&buf, ","))) { 5414 res = kstrtoint(cmd, 10, &level); 5415 if (res < 0) 5416 return res; 5417 } 5418 5419 if (level >= 3 || level < 0) 5420 return -EINVAL; 5421 5422 return kbdlight_set_level_and_update(level); 5423 } 5424 5425 static void kbdlight_suspend(void) 5426 { 5427 struct led_classdev *led_cdev; 5428 5429 if (!tp_features.kbdlight) 5430 return; 5431 5432 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5433 led_update_brightness(led_cdev); 5434 led_classdev_suspend(led_cdev); 5435 } 5436 5437 static void kbdlight_resume(void) 5438 { 5439 if (!tp_features.kbdlight) 5440 return; 5441 5442 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5443 } 5444 5445 static struct ibm_struct kbdlight_driver_data = { 5446 .name = "kbdlight", 5447 .read = kbdlight_read, 5448 .write = kbdlight_write, 5449 .suspend = kbdlight_suspend, 5450 .resume = kbdlight_resume, 5451 .exit = kbdlight_exit, 5452 }; 5453 5454 /************************************************************************* 5455 * Light (thinklight) subdriver 5456 */ 5457 5458 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5459 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5460 5461 static int light_get_status(void) 5462 { 5463 int status = 0; 5464 5465 if (tp_features.light_status) { 5466 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5467 return -EIO; 5468 return (!!status); 5469 } 5470 5471 return -ENXIO; 5472 } 5473 5474 static int light_set_status(int status) 5475 { 5476 int rc; 5477 5478 if (tp_features.light) { 5479 if (cmos_handle) { 5480 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5481 (status) ? 5482 TP_CMOS_THINKLIGHT_ON : 5483 TP_CMOS_THINKLIGHT_OFF); 5484 } else { 5485 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5486 (status) ? 1 : 0); 5487 } 5488 return (rc) ? 0 : -EIO; 5489 } 5490 5491 return -ENXIO; 5492 } 5493 5494 static int light_sysfs_set(struct led_classdev *led_cdev, 5495 enum led_brightness brightness) 5496 { 5497 return light_set_status((brightness != LED_OFF) ? 5498 TPACPI_LED_ON : TPACPI_LED_OFF); 5499 } 5500 5501 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5502 { 5503 return (light_get_status() == 1) ? LED_FULL : LED_OFF; 5504 } 5505 5506 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5507 .led_classdev = { 5508 .name = "tpacpi::thinklight", 5509 .brightness_set_blocking = &light_sysfs_set, 5510 .brightness_get = &light_sysfs_get, 5511 } 5512 }; 5513 5514 static int __init light_init(struct ibm_init_struct *iibm) 5515 { 5516 int rc; 5517 5518 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5519 5520 if (tpacpi_is_ibm()) { 5521 TPACPI_ACPIHANDLE_INIT(ledb); 5522 TPACPI_ACPIHANDLE_INIT(lght); 5523 } 5524 TPACPI_ACPIHANDLE_INIT(cmos); 5525 5526 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5527 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5528 5529 if (tp_features.light) 5530 /* light status not supported on 5531 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5532 tp_features.light_status = 5533 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5534 5535 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5536 str_supported(tp_features.light), 5537 str_supported(tp_features.light_status)); 5538 5539 if (!tp_features.light) 5540 return 1; 5541 5542 rc = led_classdev_register(&tpacpi_pdev->dev, 5543 &tpacpi_led_thinklight.led_classdev); 5544 5545 if (rc < 0) { 5546 tp_features.light = 0; 5547 tp_features.light_status = 0; 5548 } else { 5549 rc = 0; 5550 } 5551 5552 return rc; 5553 } 5554 5555 static void light_exit(void) 5556 { 5557 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5558 } 5559 5560 static int light_read(struct seq_file *m) 5561 { 5562 int status; 5563 5564 if (!tp_features.light) { 5565 seq_printf(m, "status:\t\tnot supported\n"); 5566 } else if (!tp_features.light_status) { 5567 seq_printf(m, "status:\t\tunknown\n"); 5568 seq_printf(m, "commands:\ton, off\n"); 5569 } else { 5570 status = light_get_status(); 5571 if (status < 0) 5572 return status; 5573 seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); 5574 seq_printf(m, "commands:\ton, off\n"); 5575 } 5576 5577 return 0; 5578 } 5579 5580 static int light_write(char *buf) 5581 { 5582 char *cmd; 5583 int newstatus = 0; 5584 5585 if (!tp_features.light) 5586 return -ENODEV; 5587 5588 while ((cmd = strsep(&buf, ","))) { 5589 if (strlencmp(cmd, "on") == 0) { 5590 newstatus = 1; 5591 } else if (strlencmp(cmd, "off") == 0) { 5592 newstatus = 0; 5593 } else 5594 return -EINVAL; 5595 } 5596 5597 return light_set_status(newstatus); 5598 } 5599 5600 static struct ibm_struct light_driver_data = { 5601 .name = "light", 5602 .read = light_read, 5603 .write = light_write, 5604 .exit = light_exit, 5605 }; 5606 5607 /************************************************************************* 5608 * CMOS subdriver 5609 */ 5610 5611 /* sysfs cmos_command -------------------------------------------------- */ 5612 static ssize_t cmos_command_store(struct device *dev, 5613 struct device_attribute *attr, 5614 const char *buf, size_t count) 5615 { 5616 unsigned long cmos_cmd; 5617 int res; 5618 5619 if (parse_strtoul(buf, 21, &cmos_cmd)) 5620 return -EINVAL; 5621 5622 res = issue_thinkpad_cmos_command(cmos_cmd); 5623 return (res) ? res : count; 5624 } 5625 5626 static DEVICE_ATTR_WO(cmos_command); 5627 5628 /* --------------------------------------------------------------------- */ 5629 5630 static int __init cmos_init(struct ibm_init_struct *iibm) 5631 { 5632 int res; 5633 5634 vdbg_printk(TPACPI_DBG_INIT, 5635 "initializing cmos commands subdriver\n"); 5636 5637 TPACPI_ACPIHANDLE_INIT(cmos); 5638 5639 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5640 str_supported(cmos_handle != NULL)); 5641 5642 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5643 if (res) 5644 return res; 5645 5646 return (cmos_handle) ? 0 : 1; 5647 } 5648 5649 static void cmos_exit(void) 5650 { 5651 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5652 } 5653 5654 static int cmos_read(struct seq_file *m) 5655 { 5656 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5657 R30, R31, T20-22, X20-21 */ 5658 if (!cmos_handle) 5659 seq_printf(m, "status:\t\tnot supported\n"); 5660 else { 5661 seq_printf(m, "status:\t\tsupported\n"); 5662 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5663 } 5664 5665 return 0; 5666 } 5667 5668 static int cmos_write(char *buf) 5669 { 5670 char *cmd; 5671 int cmos_cmd, res; 5672 5673 while ((cmd = strsep(&buf, ","))) { 5674 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5675 cmos_cmd >= 0 && cmos_cmd <= 21) { 5676 /* cmos_cmd set */ 5677 } else 5678 return -EINVAL; 5679 5680 res = issue_thinkpad_cmos_command(cmos_cmd); 5681 if (res) 5682 return res; 5683 } 5684 5685 return 0; 5686 } 5687 5688 static struct ibm_struct cmos_driver_data = { 5689 .name = "cmos", 5690 .read = cmos_read, 5691 .write = cmos_write, 5692 .exit = cmos_exit, 5693 }; 5694 5695 /************************************************************************* 5696 * LED subdriver 5697 */ 5698 5699 enum led_access_mode { 5700 TPACPI_LED_NONE = 0, 5701 TPACPI_LED_570, /* 570 */ 5702 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5703 TPACPI_LED_NEW, /* all others */ 5704 }; 5705 5706 enum { /* For TPACPI_LED_OLD */ 5707 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5708 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5709 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5710 }; 5711 5712 static enum led_access_mode led_supported; 5713 5714 static acpi_handle led_handle; 5715 5716 #define TPACPI_LED_NUMLEDS 16 5717 static struct tpacpi_led_classdev *tpacpi_leds; 5718 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5719 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5720 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5721 "tpacpi::power", 5722 "tpacpi:orange:batt", 5723 "tpacpi:green:batt", 5724 "tpacpi::dock_active", 5725 "tpacpi::bay_active", 5726 "tpacpi::dock_batt", 5727 "tpacpi::unknown_led", 5728 "tpacpi::standby", 5729 "tpacpi::dock_status1", 5730 "tpacpi::dock_status2", 5731 "tpacpi::lid_logo_dot", 5732 "tpacpi::unknown_led3", 5733 "tpacpi::thinkvantage", 5734 }; 5735 #define TPACPI_SAFE_LEDS 0x1481U 5736 5737 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5738 { 5739 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5740 return false; 5741 #else 5742 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5743 #endif 5744 } 5745 5746 static int led_get_status(const unsigned int led) 5747 { 5748 int status; 5749 enum led_status_t led_s; 5750 5751 switch (led_supported) { 5752 case TPACPI_LED_570: 5753 if (!acpi_evalf(ec_handle, 5754 &status, "GLED", "dd", 1 << led)) 5755 return -EIO; 5756 led_s = (status == 0) ? 5757 TPACPI_LED_OFF : 5758 ((status == 1) ? 5759 TPACPI_LED_ON : 5760 TPACPI_LED_BLINK); 5761 tpacpi_led_state_cache[led] = led_s; 5762 return led_s; 5763 default: 5764 return -ENXIO; 5765 } 5766 5767 /* not reached */ 5768 } 5769 5770 static int led_set_status(const unsigned int led, 5771 const enum led_status_t ledstatus) 5772 { 5773 /* off, on, blink. Index is led_status_t */ 5774 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5775 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5776 5777 int rc = 0; 5778 5779 switch (led_supported) { 5780 case TPACPI_LED_570: 5781 /* 570 */ 5782 if (unlikely(led > 7)) 5783 return -EINVAL; 5784 if (unlikely(tpacpi_is_led_restricted(led))) 5785 return -EPERM; 5786 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5787 (1 << led), led_sled_arg1[ledstatus])) 5788 return -EIO; 5789 break; 5790 case TPACPI_LED_OLD: 5791 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5792 if (unlikely(led > 7)) 5793 return -EINVAL; 5794 if (unlikely(tpacpi_is_led_restricted(led))) 5795 return -EPERM; 5796 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5797 if (rc >= 0) 5798 rc = ec_write(TPACPI_LED_EC_HLBL, 5799 (ledstatus == TPACPI_LED_BLINK) << led); 5800 if (rc >= 0) 5801 rc = ec_write(TPACPI_LED_EC_HLCL, 5802 (ledstatus != TPACPI_LED_OFF) << led); 5803 break; 5804 case TPACPI_LED_NEW: 5805 /* all others */ 5806 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5807 return -EINVAL; 5808 if (unlikely(tpacpi_is_led_restricted(led))) 5809 return -EPERM; 5810 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5811 led, led_led_arg1[ledstatus])) 5812 return -EIO; 5813 break; 5814 default: 5815 return -ENXIO; 5816 } 5817 5818 if (!rc) 5819 tpacpi_led_state_cache[led] = ledstatus; 5820 5821 return rc; 5822 } 5823 5824 static int led_sysfs_set(struct led_classdev *led_cdev, 5825 enum led_brightness brightness) 5826 { 5827 struct tpacpi_led_classdev *data = container_of(led_cdev, 5828 struct tpacpi_led_classdev, led_classdev); 5829 enum led_status_t new_state; 5830 5831 if (brightness == LED_OFF) 5832 new_state = TPACPI_LED_OFF; 5833 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5834 new_state = TPACPI_LED_ON; 5835 else 5836 new_state = TPACPI_LED_BLINK; 5837 5838 return led_set_status(data->led, new_state); 5839 } 5840 5841 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5842 unsigned long *delay_on, unsigned long *delay_off) 5843 { 5844 struct tpacpi_led_classdev *data = container_of(led_cdev, 5845 struct tpacpi_led_classdev, led_classdev); 5846 5847 /* Can we choose the flash rate? */ 5848 if (*delay_on == 0 && *delay_off == 0) { 5849 /* yes. set them to the hardware blink rate (1 Hz) */ 5850 *delay_on = 500; /* ms */ 5851 *delay_off = 500; /* ms */ 5852 } else if ((*delay_on != 500) || (*delay_off != 500)) 5853 return -EINVAL; 5854 5855 return led_set_status(data->led, TPACPI_LED_BLINK); 5856 } 5857 5858 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5859 { 5860 int rc; 5861 5862 struct tpacpi_led_classdev *data = container_of(led_cdev, 5863 struct tpacpi_led_classdev, led_classdev); 5864 5865 rc = led_get_status(data->led); 5866 5867 if (rc == TPACPI_LED_OFF || rc < 0) 5868 rc = LED_OFF; /* no error handling in led class :( */ 5869 else 5870 rc = LED_FULL; 5871 5872 return rc; 5873 } 5874 5875 static void led_exit(void) 5876 { 5877 unsigned int i; 5878 5879 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5880 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5881 5882 kfree(tpacpi_leds); 5883 } 5884 5885 static int __init tpacpi_init_led(unsigned int led) 5886 { 5887 /* LEDs with no name don't get registered */ 5888 if (!tpacpi_led_names[led]) 5889 return 0; 5890 5891 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5892 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5893 if (led_supported == TPACPI_LED_570) 5894 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5895 5896 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5897 tpacpi_leds[led].led = led; 5898 5899 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5900 } 5901 5902 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5903 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5904 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5905 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5906 5907 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5908 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5909 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5910 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5911 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5912 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5913 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5914 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5915 5916 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5917 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5918 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5919 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5920 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5921 5922 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5923 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5924 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5925 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5926 5927 /* (1) - may have excess leds enabled on MSB */ 5928 5929 /* Defaults (order matters, keep last, don't reorder!) */ 5930 { /* Lenovo */ 5931 .vendor = PCI_VENDOR_ID_LENOVO, 5932 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5933 .quirks = 0x1fffU, 5934 }, 5935 { /* IBM ThinkPads with no EC version string */ 5936 .vendor = PCI_VENDOR_ID_IBM, 5937 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 5938 .quirks = 0x00ffU, 5939 }, 5940 { /* IBM ThinkPads with EC version string */ 5941 .vendor = PCI_VENDOR_ID_IBM, 5942 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5943 .quirks = 0x00bfU, 5944 }, 5945 }; 5946 5947 static enum led_access_mode __init led_init_detect_mode(void) 5948 { 5949 acpi_status status; 5950 5951 if (tpacpi_is_ibm()) { 5952 /* 570 */ 5953 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 5954 if (ACPI_SUCCESS(status)) 5955 return TPACPI_LED_570; 5956 5957 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5958 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 5959 if (ACPI_SUCCESS(status)) 5960 return TPACPI_LED_OLD; 5961 } 5962 5963 /* most others */ 5964 status = acpi_get_handle(ec_handle, "LED", &led_handle); 5965 if (ACPI_SUCCESS(status)) 5966 return TPACPI_LED_NEW; 5967 5968 /* R30, R31, and unknown firmwares */ 5969 led_handle = NULL; 5970 return TPACPI_LED_NONE; 5971 } 5972 5973 static int __init led_init(struct ibm_init_struct *iibm) 5974 { 5975 unsigned int i; 5976 int rc; 5977 unsigned long useful_leds; 5978 5979 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 5980 5981 led_supported = led_init_detect_mode(); 5982 5983 if (led_supported != TPACPI_LED_NONE) { 5984 useful_leds = tpacpi_check_quirks(led_useful_qtable, 5985 ARRAY_SIZE(led_useful_qtable)); 5986 5987 if (!useful_leds) { 5988 led_handle = NULL; 5989 led_supported = TPACPI_LED_NONE; 5990 } 5991 } 5992 5993 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 5994 str_supported(led_supported), led_supported); 5995 5996 if (led_supported == TPACPI_LED_NONE) 5997 return 1; 5998 5999 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), 6000 GFP_KERNEL); 6001 if (!tpacpi_leds) { 6002 pr_err("Out of memory for LED data\n"); 6003 return -ENOMEM; 6004 } 6005 6006 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 6007 tpacpi_leds[i].led = -1; 6008 6009 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 6010 rc = tpacpi_init_led(i); 6011 if (rc < 0) { 6012 led_exit(); 6013 return rc; 6014 } 6015 } 6016 } 6017 6018 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 6019 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 6020 #endif 6021 return 0; 6022 } 6023 6024 #define str_led_status(s) \ 6025 ((s) == TPACPI_LED_OFF ? "off" : \ 6026 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 6027 6028 static int led_read(struct seq_file *m) 6029 { 6030 if (!led_supported) { 6031 seq_printf(m, "status:\t\tnot supported\n"); 6032 return 0; 6033 } 6034 seq_printf(m, "status:\t\tsupported\n"); 6035 6036 if (led_supported == TPACPI_LED_570) { 6037 /* 570 */ 6038 int i, status; 6039 for (i = 0; i < 8; i++) { 6040 status = led_get_status(i); 6041 if (status < 0) 6042 return -EIO; 6043 seq_printf(m, "%d:\t\t%s\n", 6044 i, str_led_status(status)); 6045 } 6046 } 6047 6048 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 6049 6050 return 0; 6051 } 6052 6053 static int led_write(char *buf) 6054 { 6055 char *cmd; 6056 int led, rc; 6057 enum led_status_t s; 6058 6059 if (!led_supported) 6060 return -ENODEV; 6061 6062 while ((cmd = strsep(&buf, ","))) { 6063 if (sscanf(cmd, "%d", &led) != 1) 6064 return -EINVAL; 6065 6066 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 6067 return -ENODEV; 6068 6069 if (tpacpi_leds[led].led < 0) 6070 return -ENODEV; 6071 6072 if (strstr(cmd, "off")) { 6073 s = TPACPI_LED_OFF; 6074 } else if (strstr(cmd, "on")) { 6075 s = TPACPI_LED_ON; 6076 } else if (strstr(cmd, "blink")) { 6077 s = TPACPI_LED_BLINK; 6078 } else { 6079 return -EINVAL; 6080 } 6081 6082 rc = led_set_status(led, s); 6083 if (rc < 0) 6084 return rc; 6085 } 6086 6087 return 0; 6088 } 6089 6090 static struct ibm_struct led_driver_data = { 6091 .name = "led", 6092 .read = led_read, 6093 .write = led_write, 6094 .exit = led_exit, 6095 }; 6096 6097 /************************************************************************* 6098 * Beep subdriver 6099 */ 6100 6101 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6102 6103 #define TPACPI_BEEP_Q1 0x0001 6104 6105 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6106 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6107 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6108 }; 6109 6110 static int __init beep_init(struct ibm_init_struct *iibm) 6111 { 6112 unsigned long quirks; 6113 6114 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6115 6116 TPACPI_ACPIHANDLE_INIT(beep); 6117 6118 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6119 str_supported(beep_handle != NULL)); 6120 6121 quirks = tpacpi_check_quirks(beep_quirk_table, 6122 ARRAY_SIZE(beep_quirk_table)); 6123 6124 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6125 6126 return (beep_handle) ? 0 : 1; 6127 } 6128 6129 static int beep_read(struct seq_file *m) 6130 { 6131 if (!beep_handle) 6132 seq_printf(m, "status:\t\tnot supported\n"); 6133 else { 6134 seq_printf(m, "status:\t\tsupported\n"); 6135 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6136 } 6137 6138 return 0; 6139 } 6140 6141 static int beep_write(char *buf) 6142 { 6143 char *cmd; 6144 int beep_cmd; 6145 6146 if (!beep_handle) 6147 return -ENODEV; 6148 6149 while ((cmd = strsep(&buf, ","))) { 6150 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6151 beep_cmd >= 0 && beep_cmd <= 17) { 6152 /* beep_cmd set */ 6153 } else 6154 return -EINVAL; 6155 if (tp_features.beep_needs_two_args) { 6156 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6157 beep_cmd, 0)) 6158 return -EIO; 6159 } else { 6160 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6161 beep_cmd)) 6162 return -EIO; 6163 } 6164 } 6165 6166 return 0; 6167 } 6168 6169 static struct ibm_struct beep_driver_data = { 6170 .name = "beep", 6171 .read = beep_read, 6172 .write = beep_write, 6173 }; 6174 6175 /************************************************************************* 6176 * Thermal subdriver 6177 */ 6178 6179 enum thermal_access_mode { 6180 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6181 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6182 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6183 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6184 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6185 }; 6186 6187 enum { /* TPACPI_THERMAL_TPEC_* */ 6188 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6189 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6190 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */ 6191 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6192 6193 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6194 }; 6195 6196 6197 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6198 struct ibm_thermal_sensors_struct { 6199 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6200 }; 6201 6202 static enum thermal_access_mode thermal_read_mode; 6203 static const struct attribute_group *thermal_attr_group; 6204 static bool thermal_use_labels; 6205 6206 /* idx is zero-based */ 6207 static int thermal_get_sensor(int idx, s32 *value) 6208 { 6209 int t; 6210 s8 tmp; 6211 char tmpi[5]; 6212 6213 t = TP_EC_THERMAL_TMP0; 6214 6215 switch (thermal_read_mode) { 6216 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6217 case TPACPI_THERMAL_TPEC_16: 6218 if (idx >= 8 && idx <= 15) { 6219 t = TP_EC_THERMAL_TMP8; 6220 idx -= 8; 6221 } 6222 #endif 6223 fallthrough; 6224 case TPACPI_THERMAL_TPEC_8: 6225 if (idx <= 7) { 6226 if (!acpi_ec_read(t + idx, &tmp)) 6227 return -EIO; 6228 *value = tmp * 1000; 6229 return 0; 6230 } 6231 break; 6232 6233 case TPACPI_THERMAL_ACPI_UPDT: 6234 if (idx <= 7) { 6235 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6236 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6237 return -EIO; 6238 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6239 return -EIO; 6240 *value = (t - 2732) * 100; 6241 return 0; 6242 } 6243 break; 6244 6245 case TPACPI_THERMAL_ACPI_TMP07: 6246 if (idx <= 7) { 6247 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6248 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6249 return -EIO; 6250 if (t > 127 || t < -127) 6251 t = TP_EC_THERMAL_TMP_NA; 6252 *value = t * 1000; 6253 return 0; 6254 } 6255 break; 6256 6257 case TPACPI_THERMAL_NONE: 6258 default: 6259 return -ENOSYS; 6260 } 6261 6262 return -EINVAL; 6263 } 6264 6265 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6266 { 6267 int res, i; 6268 int n; 6269 6270 n = 8; 6271 i = 0; 6272 6273 if (!s) 6274 return -EINVAL; 6275 6276 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6277 n = 16; 6278 6279 for (i = 0 ; i < n; i++) { 6280 res = thermal_get_sensor(i, &s->temp[i]); 6281 if (res) 6282 return res; 6283 } 6284 6285 return n; 6286 } 6287 6288 static void thermal_dump_all_sensors(void) 6289 { 6290 int n, i; 6291 struct ibm_thermal_sensors_struct t; 6292 6293 n = thermal_get_sensors(&t); 6294 if (n <= 0) 6295 return; 6296 6297 pr_notice("temperatures (Celsius):"); 6298 6299 for (i = 0; i < n; i++) { 6300 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6301 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6302 else 6303 pr_cont(" N/A"); 6304 } 6305 6306 pr_cont("\n"); 6307 } 6308 6309 /* sysfs temp##_input -------------------------------------------------- */ 6310 6311 static ssize_t thermal_temp_input_show(struct device *dev, 6312 struct device_attribute *attr, 6313 char *buf) 6314 { 6315 struct sensor_device_attribute *sensor_attr = 6316 to_sensor_dev_attr(attr); 6317 int idx = sensor_attr->index; 6318 s32 value; 6319 int res; 6320 6321 res = thermal_get_sensor(idx, &value); 6322 if (res) 6323 return res; 6324 if (value == TPACPI_THERMAL_SENSOR_NA) 6325 return -ENXIO; 6326 6327 return sysfs_emit(buf, "%d\n", value); 6328 } 6329 6330 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6331 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6332 thermal_temp_input_show, NULL, _idxB) 6333 6334 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6335 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6336 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6337 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6338 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6339 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6340 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6341 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6342 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6343 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6344 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6345 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6346 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6347 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6348 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6349 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6350 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6351 }; 6352 6353 #define THERMAL_ATTRS(X) \ 6354 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6355 6356 static struct attribute *thermal_temp_input_attr[] = { 6357 THERMAL_ATTRS(8), 6358 THERMAL_ATTRS(9), 6359 THERMAL_ATTRS(10), 6360 THERMAL_ATTRS(11), 6361 THERMAL_ATTRS(12), 6362 THERMAL_ATTRS(13), 6363 THERMAL_ATTRS(14), 6364 THERMAL_ATTRS(15), 6365 THERMAL_ATTRS(0), 6366 THERMAL_ATTRS(1), 6367 THERMAL_ATTRS(2), 6368 THERMAL_ATTRS(3), 6369 THERMAL_ATTRS(4), 6370 THERMAL_ATTRS(5), 6371 THERMAL_ATTRS(6), 6372 THERMAL_ATTRS(7), 6373 NULL 6374 }; 6375 6376 static const struct attribute_group thermal_temp_input16_group = { 6377 .attrs = thermal_temp_input_attr 6378 }; 6379 6380 static const struct attribute_group thermal_temp_input8_group = { 6381 .attrs = &thermal_temp_input_attr[8] 6382 }; 6383 6384 #undef THERMAL_SENSOR_ATTR_TEMP 6385 #undef THERMAL_ATTRS 6386 6387 static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6388 { 6389 return sysfs_emit(buf, "CPU\n"); 6390 } 6391 static DEVICE_ATTR_RO(temp1_label); 6392 6393 static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6394 { 6395 return sysfs_emit(buf, "GPU\n"); 6396 } 6397 static DEVICE_ATTR_RO(temp2_label); 6398 6399 static struct attribute *temp_label_attributes[] = { 6400 &dev_attr_temp1_label.attr, 6401 &dev_attr_temp2_label.attr, 6402 NULL 6403 }; 6404 6405 static const struct attribute_group temp_label_attr_group = { 6406 .attrs = temp_label_attributes, 6407 }; 6408 6409 /* --------------------------------------------------------------------- */ 6410 6411 static int __init thermal_init(struct ibm_init_struct *iibm) 6412 { 6413 u8 t, ta1, ta2, ver = 0; 6414 int i; 6415 int acpi_tmp7; 6416 int res; 6417 6418 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6419 6420 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6421 6422 if (thinkpad_id.ec_model) { 6423 /* 6424 * Direct EC access mode: sensors at registers 6425 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6426 * non-implemented, thermal sensors return 0x80 when 6427 * not available 6428 * The above rule is unfortunately flawed. This has been seen with 6429 * 0xC2 (power supply ID) causing thermal control problems. 6430 * The EC version can be determined by offset 0xEF and at least for 6431 * version 3 the Lenovo firmware team confirmed that registers 0xC0-0xC7 6432 * are not thermal registers. 6433 */ 6434 if (!acpi_ec_read(TP_EC_FUNCREV, &ver)) 6435 pr_warn("Thinkpad ACPI EC unable to access EC version\n"); 6436 6437 ta1 = ta2 = 0; 6438 for (i = 0; i < 8; i++) { 6439 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6440 ta1 |= t; 6441 } else { 6442 ta1 = 0; 6443 break; 6444 } 6445 if (ver < 3) { 6446 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6447 ta2 |= t; 6448 } else { 6449 ta1 = 0; 6450 break; 6451 } 6452 } 6453 } 6454 if (ta1 == 0) { 6455 /* This is sheer paranoia, but we handle it anyway */ 6456 if (acpi_tmp7) { 6457 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6458 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6459 } else { 6460 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6461 thermal_read_mode = TPACPI_THERMAL_NONE; 6462 } 6463 } else { 6464 if (ver >= 3) { 6465 thermal_read_mode = TPACPI_THERMAL_TPEC_8; 6466 thermal_use_labels = true; 6467 } else { 6468 thermal_read_mode = 6469 (ta2 != 0) ? 6470 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6471 } 6472 } 6473 } else if (acpi_tmp7) { 6474 if (tpacpi_is_ibm() && 6475 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6476 /* 600e/x, 770e, 770x */ 6477 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6478 } else { 6479 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6480 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6481 } 6482 } else { 6483 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6484 thermal_read_mode = TPACPI_THERMAL_NONE; 6485 } 6486 6487 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6488 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6489 thermal_read_mode); 6490 6491 switch (thermal_read_mode) { 6492 case TPACPI_THERMAL_TPEC_16: 6493 thermal_attr_group = &thermal_temp_input16_group; 6494 break; 6495 case TPACPI_THERMAL_TPEC_8: 6496 case TPACPI_THERMAL_ACPI_TMP07: 6497 case TPACPI_THERMAL_ACPI_UPDT: 6498 thermal_attr_group = &thermal_temp_input8_group; 6499 break; 6500 case TPACPI_THERMAL_NONE: 6501 default: 6502 return 1; 6503 } 6504 6505 res = sysfs_create_group(&tpacpi_hwmon->kobj, thermal_attr_group); 6506 if (res) 6507 return res; 6508 6509 if (thermal_use_labels) { 6510 res = sysfs_create_group(&tpacpi_hwmon->kobj, &temp_label_attr_group); 6511 if (res) { 6512 sysfs_remove_group(&tpacpi_hwmon->kobj, thermal_attr_group); 6513 return res; 6514 } 6515 } 6516 6517 return 0; 6518 } 6519 6520 static void thermal_exit(void) 6521 { 6522 if (thermal_attr_group) 6523 sysfs_remove_group(&tpacpi_hwmon->kobj, thermal_attr_group); 6524 6525 if (thermal_use_labels) 6526 sysfs_remove_group(&tpacpi_hwmon->kobj, &temp_label_attr_group); 6527 } 6528 6529 static int thermal_read(struct seq_file *m) 6530 { 6531 int n, i; 6532 struct ibm_thermal_sensors_struct t; 6533 6534 n = thermal_get_sensors(&t); 6535 if (unlikely(n < 0)) 6536 return n; 6537 6538 seq_printf(m, "temperatures:\t"); 6539 6540 if (n > 0) { 6541 for (i = 0; i < (n - 1); i++) 6542 seq_printf(m, "%d ", t.temp[i] / 1000); 6543 seq_printf(m, "%d\n", t.temp[i] / 1000); 6544 } else 6545 seq_printf(m, "not supported\n"); 6546 6547 return 0; 6548 } 6549 6550 static struct ibm_struct thermal_driver_data = { 6551 .name = "thermal", 6552 .read = thermal_read, 6553 .exit = thermal_exit, 6554 }; 6555 6556 /************************************************************************* 6557 * Backlight/brightness subdriver 6558 */ 6559 6560 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6561 6562 /* 6563 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6564 * CMOS NVRAM byte 0x5E, bits 0-3. 6565 * 6566 * EC HBRV (0x31) has the following layout 6567 * Bit 7: unknown function 6568 * Bit 6: unknown function 6569 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6570 * Bit 4: must be set to zero to avoid problems 6571 * Bit 3-0: backlight brightness level 6572 * 6573 * brightness_get_raw returns status data in the HBRV layout 6574 * 6575 * WARNING: The X61 has been verified to use HBRV for something else, so 6576 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6577 * testing on the very early *60 Lenovo models... 6578 */ 6579 6580 enum { 6581 TP_EC_BACKLIGHT = 0x31, 6582 6583 /* TP_EC_BACKLIGHT bitmasks */ 6584 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6585 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6586 TP_EC_BACKLIGHT_MAPSW = 0x20, 6587 }; 6588 6589 enum tpacpi_brightness_access_mode { 6590 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6591 TPACPI_BRGHT_MODE_EC, /* EC control */ 6592 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6593 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6594 TPACPI_BRGHT_MODE_MAX 6595 }; 6596 6597 static struct backlight_device *ibm_backlight_device; 6598 6599 static enum tpacpi_brightness_access_mode brightness_mode = 6600 TPACPI_BRGHT_MODE_MAX; 6601 6602 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6603 6604 static struct mutex brightness_mutex; 6605 6606 /* NVRAM brightness access, 6607 * call with brightness_mutex held! */ 6608 static unsigned int tpacpi_brightness_nvram_get(void) 6609 { 6610 u8 lnvram; 6611 6612 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6613 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6614 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6615 lnvram &= bright_maxlvl; 6616 6617 return lnvram; 6618 } 6619 6620 static void tpacpi_brightness_checkpoint_nvram(void) 6621 { 6622 u8 lec = 0; 6623 u8 b_nvram; 6624 6625 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6626 return; 6627 6628 vdbg_printk(TPACPI_DBG_BRGHT, 6629 "trying to checkpoint backlight level to NVRAM...\n"); 6630 6631 if (mutex_lock_killable(&brightness_mutex) < 0) 6632 return; 6633 6634 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6635 goto unlock; 6636 lec &= TP_EC_BACKLIGHT_LVLMSK; 6637 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6638 6639 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6640 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6641 /* NVRAM needs update */ 6642 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6643 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6644 b_nvram |= lec; 6645 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6646 dbg_printk(TPACPI_DBG_BRGHT, 6647 "updated NVRAM backlight level to %u (0x%02x)\n", 6648 (unsigned int) lec, (unsigned int) b_nvram); 6649 } else 6650 vdbg_printk(TPACPI_DBG_BRGHT, 6651 "NVRAM backlight level already is %u (0x%02x)\n", 6652 (unsigned int) lec, (unsigned int) b_nvram); 6653 6654 unlock: 6655 mutex_unlock(&brightness_mutex); 6656 } 6657 6658 6659 /* call with brightness_mutex held! */ 6660 static int tpacpi_brightness_get_raw(int *status) 6661 { 6662 u8 lec = 0; 6663 6664 switch (brightness_mode) { 6665 case TPACPI_BRGHT_MODE_UCMS_STEP: 6666 *status = tpacpi_brightness_nvram_get(); 6667 return 0; 6668 case TPACPI_BRGHT_MODE_EC: 6669 case TPACPI_BRGHT_MODE_ECNVRAM: 6670 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6671 return -EIO; 6672 *status = lec; 6673 return 0; 6674 default: 6675 return -ENXIO; 6676 } 6677 } 6678 6679 /* call with brightness_mutex held! */ 6680 /* do NOT call with illegal backlight level value */ 6681 static int tpacpi_brightness_set_ec(unsigned int value) 6682 { 6683 u8 lec = 0; 6684 6685 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6686 return -EIO; 6687 6688 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6689 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6690 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6691 return -EIO; 6692 6693 return 0; 6694 } 6695 6696 /* call with brightness_mutex held! */ 6697 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6698 { 6699 int cmos_cmd, inc; 6700 unsigned int current_value, i; 6701 6702 current_value = tpacpi_brightness_nvram_get(); 6703 6704 if (value == current_value) 6705 return 0; 6706 6707 cmos_cmd = (value > current_value) ? 6708 TP_CMOS_BRIGHTNESS_UP : 6709 TP_CMOS_BRIGHTNESS_DOWN; 6710 inc = (value > current_value) ? 1 : -1; 6711 6712 for (i = current_value; i != value; i += inc) 6713 if (issue_thinkpad_cmos_command(cmos_cmd)) 6714 return -EIO; 6715 6716 return 0; 6717 } 6718 6719 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6720 static int brightness_set(unsigned int value) 6721 { 6722 int res; 6723 6724 if (value > bright_maxlvl) 6725 return -EINVAL; 6726 6727 vdbg_printk(TPACPI_DBG_BRGHT, 6728 "set backlight level to %d\n", value); 6729 6730 res = mutex_lock_killable(&brightness_mutex); 6731 if (res < 0) 6732 return res; 6733 6734 switch (brightness_mode) { 6735 case TPACPI_BRGHT_MODE_EC: 6736 case TPACPI_BRGHT_MODE_ECNVRAM: 6737 res = tpacpi_brightness_set_ec(value); 6738 break; 6739 case TPACPI_BRGHT_MODE_UCMS_STEP: 6740 res = tpacpi_brightness_set_ucmsstep(value); 6741 break; 6742 default: 6743 res = -ENXIO; 6744 } 6745 6746 mutex_unlock(&brightness_mutex); 6747 return res; 6748 } 6749 6750 /* sysfs backlight class ----------------------------------------------- */ 6751 6752 static int brightness_update_status(struct backlight_device *bd) 6753 { 6754 unsigned int level = 6755 (bd->props.fb_blank == FB_BLANK_UNBLANK && 6756 bd->props.power == FB_BLANK_UNBLANK) ? 6757 bd->props.brightness : 0; 6758 6759 dbg_printk(TPACPI_DBG_BRGHT, 6760 "backlight: attempt to set level to %d\n", 6761 level); 6762 6763 /* it is the backlight class's job (caller) to handle 6764 * EINTR and other errors properly */ 6765 return brightness_set(level); 6766 } 6767 6768 static int brightness_get(struct backlight_device *bd) 6769 { 6770 int status, res; 6771 6772 res = mutex_lock_killable(&brightness_mutex); 6773 if (res < 0) 6774 return 0; 6775 6776 res = tpacpi_brightness_get_raw(&status); 6777 6778 mutex_unlock(&brightness_mutex); 6779 6780 if (res < 0) 6781 return 0; 6782 6783 return status & TP_EC_BACKLIGHT_LVLMSK; 6784 } 6785 6786 static void tpacpi_brightness_notify_change(void) 6787 { 6788 backlight_force_update(ibm_backlight_device, 6789 BACKLIGHT_UPDATE_HOTKEY); 6790 } 6791 6792 static const struct backlight_ops ibm_backlight_data = { 6793 .get_brightness = brightness_get, 6794 .update_status = brightness_update_status, 6795 }; 6796 6797 /* --------------------------------------------------------------------- */ 6798 6799 /* 6800 * Call _BCL method of video device. On some ThinkPads this will 6801 * switch the firmware to the ACPI brightness control mode. 6802 */ 6803 6804 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6805 { 6806 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6807 union acpi_object *obj; 6808 struct acpi_device *device, *child; 6809 int rc; 6810 6811 if (acpi_bus_get_device(handle, &device)) 6812 return 0; 6813 6814 rc = 0; 6815 list_for_each_entry(child, &device->children, node) { 6816 acpi_status status = acpi_evaluate_object(child->handle, "_BCL", 6817 NULL, &buffer); 6818 if (ACPI_FAILURE(status)) { 6819 buffer.length = ACPI_ALLOCATE_BUFFER; 6820 continue; 6821 } 6822 6823 obj = (union acpi_object *)buffer.pointer; 6824 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 6825 pr_err("Unknown _BCL data, please report this to %s\n", 6826 TPACPI_MAIL); 6827 rc = 0; 6828 } else { 6829 rc = obj->package.count; 6830 } 6831 break; 6832 } 6833 6834 kfree(buffer.pointer); 6835 return rc; 6836 } 6837 6838 6839 /* 6840 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6841 */ 6842 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6843 { 6844 acpi_handle video_device; 6845 int bcl_levels = 0; 6846 6847 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6848 if (video_device) 6849 bcl_levels = tpacpi_query_bcl_levels(video_device); 6850 6851 tp_features.bright_acpimode = (bcl_levels > 0); 6852 6853 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6854 } 6855 6856 /* 6857 * These are only useful for models that have only one possibility 6858 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6859 * these quirks. 6860 */ 6861 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6862 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6863 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6864 6865 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6866 /* Models with ATI GPUs known to require ECNVRAM mode */ 6867 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6868 6869 /* Models with ATI GPUs that can use ECNVRAM */ 6870 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6871 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6872 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6873 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6874 6875 /* Models with Intel Extreme Graphics 2 */ 6876 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6877 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6878 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6879 6880 /* Models with Intel GMA900 */ 6881 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6882 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6883 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6884 }; 6885 6886 /* 6887 * Returns < 0 for error, otherwise sets tp_features.bright_* 6888 * and bright_maxlvl. 6889 */ 6890 static void __init tpacpi_detect_brightness_capabilities(void) 6891 { 6892 unsigned int b; 6893 6894 vdbg_printk(TPACPI_DBG_INIT, 6895 "detecting firmware brightness interface capabilities\n"); 6896 6897 /* we could run a quirks check here (same table used by 6898 * brightness_init) if needed */ 6899 6900 /* 6901 * We always attempt to detect acpi support, so as to switch 6902 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6903 * going to publish a backlight interface 6904 */ 6905 b = tpacpi_check_std_acpi_brightness_support(); 6906 switch (b) { 6907 case 16: 6908 bright_maxlvl = 15; 6909 break; 6910 case 8: 6911 case 0: 6912 bright_maxlvl = 7; 6913 break; 6914 default: 6915 tp_features.bright_unkfw = 1; 6916 bright_maxlvl = b - 1; 6917 } 6918 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6919 } 6920 6921 static int __init brightness_init(struct ibm_init_struct *iibm) 6922 { 6923 struct backlight_properties props; 6924 int b; 6925 unsigned long quirks; 6926 6927 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6928 6929 mutex_init(&brightness_mutex); 6930 6931 quirks = tpacpi_check_quirks(brightness_quirk_table, 6932 ARRAY_SIZE(brightness_quirk_table)); 6933 6934 /* tpacpi_detect_brightness_capabilities() must have run already */ 6935 6936 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6937 if (tp_features.bright_unkfw) 6938 return 1; 6939 6940 if (!brightness_enable) { 6941 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6942 "brightness support disabled by module parameter\n"); 6943 return 1; 6944 } 6945 6946 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6947 if (brightness_enable > 1) { 6948 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6949 return 1; 6950 } else if (brightness_enable == 1) { 6951 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6952 return 1; 6953 } 6954 } else if (!tp_features.bright_acpimode) { 6955 pr_notice("ACPI backlight interface not available\n"); 6956 return 1; 6957 } 6958 6959 pr_notice("ACPI native brightness control enabled\n"); 6960 6961 /* 6962 * Check for module parameter bogosity, note that we 6963 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6964 * able to detect "unspecified" 6965 */ 6966 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6967 return -EINVAL; 6968 6969 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 6970 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 6971 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 6972 if (quirks & TPACPI_BRGHT_Q_EC) 6973 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 6974 else 6975 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 6976 6977 dbg_printk(TPACPI_DBG_BRGHT, 6978 "driver auto-selected brightness_mode=%d\n", 6979 brightness_mode); 6980 } 6981 6982 /* Safety */ 6983 if (!tpacpi_is_ibm() && 6984 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 6985 brightness_mode == TPACPI_BRGHT_MODE_EC)) 6986 return -EINVAL; 6987 6988 if (tpacpi_brightness_get_raw(&b) < 0) 6989 return 1; 6990 6991 memset(&props, 0, sizeof(struct backlight_properties)); 6992 props.type = BACKLIGHT_PLATFORM; 6993 props.max_brightness = bright_maxlvl; 6994 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 6995 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 6996 NULL, NULL, 6997 &ibm_backlight_data, 6998 &props); 6999 if (IS_ERR(ibm_backlight_device)) { 7000 int rc = PTR_ERR(ibm_backlight_device); 7001 ibm_backlight_device = NULL; 7002 pr_err("Could not register backlight device\n"); 7003 return rc; 7004 } 7005 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7006 "brightness is supported\n"); 7007 7008 if (quirks & TPACPI_BRGHT_Q_ASK) { 7009 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 7010 brightness_mode); 7011 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 7012 TPACPI_MAIL); 7013 } 7014 7015 /* Added by mistake in early 2007. Probably useless, but it could 7016 * be working around some unknown firmware problem where the value 7017 * read at startup doesn't match the real hardware state... so leave 7018 * it in place just in case */ 7019 backlight_update_status(ibm_backlight_device); 7020 7021 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 7022 "brightness: registering brightness hotkeys as change notification\n"); 7023 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7024 | TP_ACPI_HKEY_BRGHTUP_MASK 7025 | TP_ACPI_HKEY_BRGHTDWN_MASK); 7026 return 0; 7027 } 7028 7029 static void brightness_suspend(void) 7030 { 7031 tpacpi_brightness_checkpoint_nvram(); 7032 } 7033 7034 static void brightness_shutdown(void) 7035 { 7036 tpacpi_brightness_checkpoint_nvram(); 7037 } 7038 7039 static void brightness_exit(void) 7040 { 7041 if (ibm_backlight_device) { 7042 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 7043 "calling backlight_device_unregister()\n"); 7044 backlight_device_unregister(ibm_backlight_device); 7045 } 7046 7047 tpacpi_brightness_checkpoint_nvram(); 7048 } 7049 7050 static int brightness_read(struct seq_file *m) 7051 { 7052 int level; 7053 7054 level = brightness_get(NULL); 7055 if (level < 0) { 7056 seq_printf(m, "level:\t\tunreadable\n"); 7057 } else { 7058 seq_printf(m, "level:\t\t%d\n", level); 7059 seq_printf(m, "commands:\tup, down\n"); 7060 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7061 bright_maxlvl); 7062 } 7063 7064 return 0; 7065 } 7066 7067 static int brightness_write(char *buf) 7068 { 7069 int level; 7070 int rc; 7071 char *cmd; 7072 7073 level = brightness_get(NULL); 7074 if (level < 0) 7075 return level; 7076 7077 while ((cmd = strsep(&buf, ","))) { 7078 if (strlencmp(cmd, "up") == 0) { 7079 if (level < bright_maxlvl) 7080 level++; 7081 } else if (strlencmp(cmd, "down") == 0) { 7082 if (level > 0) 7083 level--; 7084 } else if (sscanf(cmd, "level %d", &level) == 1 && 7085 level >= 0 && level <= bright_maxlvl) { 7086 /* new level set */ 7087 } else 7088 return -EINVAL; 7089 } 7090 7091 tpacpi_disclose_usertask("procfs brightness", 7092 "set level to %d\n", level); 7093 7094 /* 7095 * Now we know what the final level should be, so we try to set it. 7096 * Doing it this way makes the syscall restartable in case of EINTR 7097 */ 7098 rc = brightness_set(level); 7099 if (!rc && ibm_backlight_device) 7100 backlight_force_update(ibm_backlight_device, 7101 BACKLIGHT_UPDATE_SYSFS); 7102 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7103 } 7104 7105 static struct ibm_struct brightness_driver_data = { 7106 .name = "brightness", 7107 .read = brightness_read, 7108 .write = brightness_write, 7109 .exit = brightness_exit, 7110 .suspend = brightness_suspend, 7111 .shutdown = brightness_shutdown, 7112 }; 7113 7114 /************************************************************************* 7115 * Volume subdriver 7116 */ 7117 7118 /* 7119 * IBM ThinkPads have a simple volume controller with MUTE gating. 7120 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7121 * 7122 * Since the *61 series (and probably also the later *60 series), Lenovo 7123 * ThinkPads only implement the MUTE gate. 7124 * 7125 * EC register 0x30 7126 * Bit 6: MUTE (1 mutes sound) 7127 * Bit 3-0: Volume 7128 * Other bits should be zero as far as we know. 7129 * 7130 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7131 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7132 * such as bit 7 which is used to detect repeated presses of MUTE, 7133 * and we leave them unchanged. 7134 * 7135 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7136 * in response to user input. Unfortunately, this rarely works well. 7137 * The laptop changes the state of its internal MUTE gate and, on some 7138 * models, sends KEY_MUTE, causing any user code that responds to the 7139 * mute button to get confused. The hardware MUTE gate is also 7140 * unnecessary, since user code can handle the mute button without 7141 * kernel or EC help. 7142 * 7143 * To avoid confusing userspace, we simply disable all EC-based mute 7144 * and volume controls when possible. 7145 */ 7146 7147 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7148 7149 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7150 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7151 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7152 7153 #if SNDRV_CARDS <= 32 7154 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7155 #else 7156 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7157 #endif 7158 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7159 static char *alsa_id = "ThinkPadEC"; 7160 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7161 7162 struct tpacpi_alsa_data { 7163 struct snd_card *card; 7164 struct snd_ctl_elem_id *ctl_mute_id; 7165 struct snd_ctl_elem_id *ctl_vol_id; 7166 }; 7167 7168 static struct snd_card *alsa_card; 7169 7170 enum { 7171 TP_EC_AUDIO = 0x30, 7172 7173 /* TP_EC_AUDIO bits */ 7174 TP_EC_AUDIO_MUTESW = 6, 7175 7176 /* TP_EC_AUDIO bitmasks */ 7177 TP_EC_AUDIO_LVL_MSK = 0x0F, 7178 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7179 7180 /* Maximum volume */ 7181 TP_EC_VOLUME_MAX = 14, 7182 }; 7183 7184 enum tpacpi_volume_access_mode { 7185 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7186 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7187 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7188 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7189 TPACPI_VOL_MODE_MAX 7190 }; 7191 7192 enum tpacpi_volume_capabilities { 7193 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7194 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7195 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7196 TPACPI_VOL_CAP_MAX 7197 }; 7198 7199 enum tpacpi_mute_btn_mode { 7200 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7201 /* We don't know what mode 1 is. */ 7202 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7203 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7204 }; 7205 7206 static enum tpacpi_volume_access_mode volume_mode = 7207 TPACPI_VOL_MODE_MAX; 7208 7209 static enum tpacpi_volume_capabilities volume_capabilities; 7210 static bool volume_control_allowed; 7211 static bool software_mute_requested = true; 7212 static bool software_mute_active; 7213 static int software_mute_orig_mode; 7214 7215 /* 7216 * Used to syncronize writers to TP_EC_AUDIO and 7217 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7218 */ 7219 static struct mutex volume_mutex; 7220 7221 static void tpacpi_volume_checkpoint_nvram(void) 7222 { 7223 u8 lec = 0; 7224 u8 b_nvram; 7225 u8 ec_mask; 7226 7227 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7228 return; 7229 if (!volume_control_allowed) 7230 return; 7231 if (software_mute_active) 7232 return; 7233 7234 vdbg_printk(TPACPI_DBG_MIXER, 7235 "trying to checkpoint mixer state to NVRAM...\n"); 7236 7237 if (tp_features.mixer_no_level_control) 7238 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7239 else 7240 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7241 7242 if (mutex_lock_killable(&volume_mutex) < 0) 7243 return; 7244 7245 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7246 goto unlock; 7247 lec &= ec_mask; 7248 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7249 7250 if (lec != (b_nvram & ec_mask)) { 7251 /* NVRAM needs update */ 7252 b_nvram &= ~ec_mask; 7253 b_nvram |= lec; 7254 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7255 dbg_printk(TPACPI_DBG_MIXER, 7256 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7257 (unsigned int) lec, (unsigned int) b_nvram); 7258 } else { 7259 vdbg_printk(TPACPI_DBG_MIXER, 7260 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7261 (unsigned int) lec, (unsigned int) b_nvram); 7262 } 7263 7264 unlock: 7265 mutex_unlock(&volume_mutex); 7266 } 7267 7268 static int volume_get_status_ec(u8 *status) 7269 { 7270 u8 s; 7271 7272 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7273 return -EIO; 7274 7275 *status = s; 7276 7277 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7278 7279 return 0; 7280 } 7281 7282 static int volume_get_status(u8 *status) 7283 { 7284 return volume_get_status_ec(status); 7285 } 7286 7287 static int volume_set_status_ec(const u8 status) 7288 { 7289 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7290 return -EIO; 7291 7292 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7293 7294 /* 7295 * On X200s, and possibly on others, it can take a while for 7296 * reads to become correct. 7297 */ 7298 msleep(1); 7299 7300 return 0; 7301 } 7302 7303 static int volume_set_status(const u8 status) 7304 { 7305 return volume_set_status_ec(status); 7306 } 7307 7308 /* returns < 0 on error, 0 on no change, 1 on change */ 7309 static int __volume_set_mute_ec(const bool mute) 7310 { 7311 int rc; 7312 u8 s, n; 7313 7314 if (mutex_lock_killable(&volume_mutex) < 0) 7315 return -EINTR; 7316 7317 rc = volume_get_status_ec(&s); 7318 if (rc) 7319 goto unlock; 7320 7321 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7322 s & ~TP_EC_AUDIO_MUTESW_MSK; 7323 7324 if (n != s) { 7325 rc = volume_set_status_ec(n); 7326 if (!rc) 7327 rc = 1; 7328 } 7329 7330 unlock: 7331 mutex_unlock(&volume_mutex); 7332 return rc; 7333 } 7334 7335 static int volume_alsa_set_mute(const bool mute) 7336 { 7337 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7338 (mute) ? "" : "un"); 7339 return __volume_set_mute_ec(mute); 7340 } 7341 7342 static int volume_set_mute(const bool mute) 7343 { 7344 int rc; 7345 7346 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7347 (mute) ? "" : "un"); 7348 7349 rc = __volume_set_mute_ec(mute); 7350 return (rc < 0) ? rc : 0; 7351 } 7352 7353 /* returns < 0 on error, 0 on no change, 1 on change */ 7354 static int __volume_set_volume_ec(const u8 vol) 7355 { 7356 int rc; 7357 u8 s, n; 7358 7359 if (vol > TP_EC_VOLUME_MAX) 7360 return -EINVAL; 7361 7362 if (mutex_lock_killable(&volume_mutex) < 0) 7363 return -EINTR; 7364 7365 rc = volume_get_status_ec(&s); 7366 if (rc) 7367 goto unlock; 7368 7369 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7370 7371 if (n != s) { 7372 rc = volume_set_status_ec(n); 7373 if (!rc) 7374 rc = 1; 7375 } 7376 7377 unlock: 7378 mutex_unlock(&volume_mutex); 7379 return rc; 7380 } 7381 7382 static int volume_set_software_mute(bool startup) 7383 { 7384 int result; 7385 7386 if (!tpacpi_is_lenovo()) 7387 return -ENODEV; 7388 7389 if (startup) { 7390 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7391 "HAUM", "qd")) 7392 return -EIO; 7393 7394 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7395 "Initial HAUM setting was %d\n", 7396 software_mute_orig_mode); 7397 } 7398 7399 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7400 (int)TP_EC_MUTE_BTN_NONE)) 7401 return -EIO; 7402 7403 if (result != TP_EC_MUTE_BTN_NONE) 7404 pr_warn("Unexpected SAUM result %d\n", 7405 result); 7406 7407 /* 7408 * In software mute mode, the standard codec controls take 7409 * precendence, so we unmute the ThinkPad HW switch at 7410 * startup. Just on case there are SAUM-capable ThinkPads 7411 * with level controls, set max HW volume as well. 7412 */ 7413 if (tp_features.mixer_no_level_control) 7414 result = volume_set_mute(false); 7415 else 7416 result = volume_set_status(TP_EC_VOLUME_MAX); 7417 7418 if (result != 0) 7419 pr_warn("Failed to unmute the HW mute switch\n"); 7420 7421 return 0; 7422 } 7423 7424 static void volume_exit_software_mute(void) 7425 { 7426 int r; 7427 7428 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7429 || r != software_mute_orig_mode) 7430 pr_warn("Failed to restore mute mode\n"); 7431 } 7432 7433 static int volume_alsa_set_volume(const u8 vol) 7434 { 7435 dbg_printk(TPACPI_DBG_MIXER, 7436 "ALSA: trying to set volume level to %hu\n", vol); 7437 return __volume_set_volume_ec(vol); 7438 } 7439 7440 static void volume_alsa_notify_change(void) 7441 { 7442 struct tpacpi_alsa_data *d; 7443 7444 if (alsa_card && alsa_card->private_data) { 7445 d = alsa_card->private_data; 7446 if (d->ctl_mute_id) 7447 snd_ctl_notify(alsa_card, 7448 SNDRV_CTL_EVENT_MASK_VALUE, 7449 d->ctl_mute_id); 7450 if (d->ctl_vol_id) 7451 snd_ctl_notify(alsa_card, 7452 SNDRV_CTL_EVENT_MASK_VALUE, 7453 d->ctl_vol_id); 7454 } 7455 } 7456 7457 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7458 struct snd_ctl_elem_info *uinfo) 7459 { 7460 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7461 uinfo->count = 1; 7462 uinfo->value.integer.min = 0; 7463 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7464 return 0; 7465 } 7466 7467 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7468 struct snd_ctl_elem_value *ucontrol) 7469 { 7470 u8 s; 7471 int rc; 7472 7473 rc = volume_get_status(&s); 7474 if (rc < 0) 7475 return rc; 7476 7477 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7478 return 0; 7479 } 7480 7481 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7482 struct snd_ctl_elem_value *ucontrol) 7483 { 7484 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7485 ucontrol->value.integer.value[0]); 7486 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7487 } 7488 7489 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7490 7491 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7492 struct snd_ctl_elem_value *ucontrol) 7493 { 7494 u8 s; 7495 int rc; 7496 7497 rc = volume_get_status(&s); 7498 if (rc < 0) 7499 return rc; 7500 7501 ucontrol->value.integer.value[0] = 7502 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7503 return 0; 7504 } 7505 7506 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7507 struct snd_ctl_elem_value *ucontrol) 7508 { 7509 tpacpi_disclose_usertask("ALSA", "%smute\n", 7510 ucontrol->value.integer.value[0] ? 7511 "un" : ""); 7512 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7513 } 7514 7515 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7516 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7517 .name = "Console Playback Volume", 7518 .index = 0, 7519 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7520 .info = volume_alsa_vol_info, 7521 .get = volume_alsa_vol_get, 7522 }; 7523 7524 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7525 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7526 .name = "Console Playback Switch", 7527 .index = 0, 7528 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7529 .info = volume_alsa_mute_info, 7530 .get = volume_alsa_mute_get, 7531 }; 7532 7533 static void volume_suspend(void) 7534 { 7535 tpacpi_volume_checkpoint_nvram(); 7536 } 7537 7538 static void volume_resume(void) 7539 { 7540 if (software_mute_active) { 7541 if (volume_set_software_mute(false) < 0) 7542 pr_warn("Failed to restore software mute\n"); 7543 } else { 7544 volume_alsa_notify_change(); 7545 } 7546 } 7547 7548 static void volume_shutdown(void) 7549 { 7550 tpacpi_volume_checkpoint_nvram(); 7551 } 7552 7553 static void volume_exit(void) 7554 { 7555 if (alsa_card) { 7556 snd_card_free(alsa_card); 7557 alsa_card = NULL; 7558 } 7559 7560 tpacpi_volume_checkpoint_nvram(); 7561 7562 if (software_mute_active) 7563 volume_exit_software_mute(); 7564 } 7565 7566 static int __init volume_create_alsa_mixer(void) 7567 { 7568 struct snd_card *card; 7569 struct tpacpi_alsa_data *data; 7570 struct snd_kcontrol *ctl_vol; 7571 struct snd_kcontrol *ctl_mute; 7572 int rc; 7573 7574 rc = snd_card_new(&tpacpi_pdev->dev, 7575 alsa_index, alsa_id, THIS_MODULE, 7576 sizeof(struct tpacpi_alsa_data), &card); 7577 if (rc < 0 || !card) { 7578 pr_err("Failed to create ALSA card structures: %d\n", rc); 7579 return 1; 7580 } 7581 7582 BUG_ON(!card->private_data); 7583 data = card->private_data; 7584 data->card = card; 7585 7586 strlcpy(card->driver, TPACPI_ALSA_DRVNAME, 7587 sizeof(card->driver)); 7588 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7589 sizeof(card->shortname)); 7590 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7591 (thinkpad_id.ec_version_str) ? 7592 thinkpad_id.ec_version_str : "(unknown)"); 7593 snprintf(card->longname, sizeof(card->longname), 7594 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7595 (thinkpad_id.ec_version_str) ? 7596 thinkpad_id.ec_version_str : "unknown"); 7597 7598 if (volume_control_allowed) { 7599 volume_alsa_control_vol.put = volume_alsa_vol_put; 7600 volume_alsa_control_vol.access = 7601 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7602 7603 volume_alsa_control_mute.put = volume_alsa_mute_put; 7604 volume_alsa_control_mute.access = 7605 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7606 } 7607 7608 if (!tp_features.mixer_no_level_control) { 7609 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7610 rc = snd_ctl_add(card, ctl_vol); 7611 if (rc < 0) { 7612 pr_err("Failed to create ALSA volume control: %d\n", 7613 rc); 7614 goto err_exit; 7615 } 7616 data->ctl_vol_id = &ctl_vol->id; 7617 } 7618 7619 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7620 rc = snd_ctl_add(card, ctl_mute); 7621 if (rc < 0) { 7622 pr_err("Failed to create ALSA mute control: %d\n", rc); 7623 goto err_exit; 7624 } 7625 data->ctl_mute_id = &ctl_mute->id; 7626 7627 rc = snd_card_register(card); 7628 if (rc < 0) { 7629 pr_err("Failed to register ALSA card: %d\n", rc); 7630 goto err_exit; 7631 } 7632 7633 alsa_card = card; 7634 return 0; 7635 7636 err_exit: 7637 snd_card_free(card); 7638 return 1; 7639 } 7640 7641 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7642 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7643 7644 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7645 /* Whitelist volume level on all IBM by default */ 7646 { .vendor = PCI_VENDOR_ID_IBM, 7647 .bios = TPACPI_MATCH_ANY, 7648 .ec = TPACPI_MATCH_ANY, 7649 .quirks = TPACPI_VOL_Q_LEVEL }, 7650 7651 /* Lenovo models with volume control (needs confirmation) */ 7652 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7653 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7654 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7655 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7656 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7657 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7658 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7659 7660 /* Whitelist mute-only on all Lenovo by default */ 7661 { .vendor = PCI_VENDOR_ID_LENOVO, 7662 .bios = TPACPI_MATCH_ANY, 7663 .ec = TPACPI_MATCH_ANY, 7664 .quirks = TPACPI_VOL_Q_MUTEONLY } 7665 }; 7666 7667 static int __init volume_init(struct ibm_init_struct *iibm) 7668 { 7669 unsigned long quirks; 7670 int rc; 7671 7672 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7673 7674 mutex_init(&volume_mutex); 7675 7676 /* 7677 * Check for module parameter bogosity, note that we 7678 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7679 * able to detect "unspecified" 7680 */ 7681 if (volume_mode > TPACPI_VOL_MODE_MAX) 7682 return -EINVAL; 7683 7684 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7685 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7686 TPACPI_MAIL); 7687 return 1; 7688 } 7689 7690 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7691 return -EINVAL; 7692 7693 /* 7694 * The ALSA mixer is our primary interface. 7695 * When disabled, don't install the subdriver at all 7696 */ 7697 if (!alsa_enable) { 7698 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7699 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7700 return 1; 7701 } 7702 7703 quirks = tpacpi_check_quirks(volume_quirk_table, 7704 ARRAY_SIZE(volume_quirk_table)); 7705 7706 switch (volume_capabilities) { 7707 case TPACPI_VOL_CAP_AUTO: 7708 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7709 tp_features.mixer_no_level_control = 1; 7710 else if (quirks & TPACPI_VOL_Q_LEVEL) 7711 tp_features.mixer_no_level_control = 0; 7712 else 7713 return 1; /* no mixer */ 7714 break; 7715 case TPACPI_VOL_CAP_VOLMUTE: 7716 tp_features.mixer_no_level_control = 0; 7717 break; 7718 case TPACPI_VOL_CAP_MUTEONLY: 7719 tp_features.mixer_no_level_control = 1; 7720 break; 7721 default: 7722 return 1; 7723 } 7724 7725 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7726 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7727 "using user-supplied volume_capabilities=%d\n", 7728 volume_capabilities); 7729 7730 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7731 volume_mode == TPACPI_VOL_MODE_MAX) { 7732 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7733 7734 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7735 "driver auto-selected volume_mode=%d\n", 7736 volume_mode); 7737 } else { 7738 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7739 "using user-supplied volume_mode=%d\n", 7740 volume_mode); 7741 } 7742 7743 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7744 "mute is supported, volume control is %s\n", 7745 str_supported(!tp_features.mixer_no_level_control)); 7746 7747 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7748 software_mute_active = true; 7749 } else { 7750 rc = volume_create_alsa_mixer(); 7751 if (rc) { 7752 pr_err("Could not create the ALSA mixer interface\n"); 7753 return rc; 7754 } 7755 7756 pr_info("Console audio control enabled, mode: %s\n", 7757 (volume_control_allowed) ? 7758 "override (read/write)" : 7759 "monitor (read only)"); 7760 } 7761 7762 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7763 "registering volume hotkeys as change notification\n"); 7764 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7765 | TP_ACPI_HKEY_VOLUP_MASK 7766 | TP_ACPI_HKEY_VOLDWN_MASK 7767 | TP_ACPI_HKEY_MUTE_MASK); 7768 7769 return 0; 7770 } 7771 7772 static int volume_read(struct seq_file *m) 7773 { 7774 u8 status; 7775 7776 if (volume_get_status(&status) < 0) { 7777 seq_printf(m, "level:\t\tunreadable\n"); 7778 } else { 7779 if (tp_features.mixer_no_level_control) 7780 seq_printf(m, "level:\t\tunsupported\n"); 7781 else 7782 seq_printf(m, "level:\t\t%d\n", 7783 status & TP_EC_AUDIO_LVL_MSK); 7784 7785 seq_printf(m, "mute:\t\t%s\n", 7786 onoff(status, TP_EC_AUDIO_MUTESW)); 7787 7788 if (volume_control_allowed) { 7789 seq_printf(m, "commands:\tunmute, mute\n"); 7790 if (!tp_features.mixer_no_level_control) { 7791 seq_printf(m, "commands:\tup, down\n"); 7792 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7793 TP_EC_VOLUME_MAX); 7794 } 7795 } 7796 } 7797 7798 return 0; 7799 } 7800 7801 static int volume_write(char *buf) 7802 { 7803 u8 s; 7804 u8 new_level, new_mute; 7805 int l; 7806 char *cmd; 7807 int rc; 7808 7809 /* 7810 * We do allow volume control at driver startup, so that the 7811 * user can set initial state through the volume=... parameter hack. 7812 */ 7813 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7814 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7815 tp_warned.volume_ctrl_forbidden = 1; 7816 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7817 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7818 } 7819 return -EPERM; 7820 } 7821 7822 rc = volume_get_status(&s); 7823 if (rc < 0) 7824 return rc; 7825 7826 new_level = s & TP_EC_AUDIO_LVL_MSK; 7827 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7828 7829 while ((cmd = strsep(&buf, ","))) { 7830 if (!tp_features.mixer_no_level_control) { 7831 if (strlencmp(cmd, "up") == 0) { 7832 if (new_mute) 7833 new_mute = 0; 7834 else if (new_level < TP_EC_VOLUME_MAX) 7835 new_level++; 7836 continue; 7837 } else if (strlencmp(cmd, "down") == 0) { 7838 if (new_mute) 7839 new_mute = 0; 7840 else if (new_level > 0) 7841 new_level--; 7842 continue; 7843 } else if (sscanf(cmd, "level %u", &l) == 1 && 7844 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7845 new_level = l; 7846 continue; 7847 } 7848 } 7849 if (strlencmp(cmd, "mute") == 0) 7850 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7851 else if (strlencmp(cmd, "unmute") == 0) 7852 new_mute = 0; 7853 else 7854 return -EINVAL; 7855 } 7856 7857 if (tp_features.mixer_no_level_control) { 7858 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7859 new_mute ? "" : "un"); 7860 rc = volume_set_mute(!!new_mute); 7861 } else { 7862 tpacpi_disclose_usertask("procfs volume", 7863 "%smute and set level to %d\n", 7864 new_mute ? "" : "un", new_level); 7865 rc = volume_set_status(new_mute | new_level); 7866 } 7867 volume_alsa_notify_change(); 7868 7869 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7870 } 7871 7872 static struct ibm_struct volume_driver_data = { 7873 .name = "volume", 7874 .read = volume_read, 7875 .write = volume_write, 7876 .exit = volume_exit, 7877 .suspend = volume_suspend, 7878 .resume = volume_resume, 7879 .shutdown = volume_shutdown, 7880 }; 7881 7882 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7883 7884 #define alsa_card NULL 7885 7886 static inline void volume_alsa_notify_change(void) 7887 { 7888 } 7889 7890 static int __init volume_init(struct ibm_init_struct *iibm) 7891 { 7892 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7893 7894 return 1; 7895 } 7896 7897 static struct ibm_struct volume_driver_data = { 7898 .name = "volume", 7899 }; 7900 7901 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7902 7903 /************************************************************************* 7904 * Fan subdriver 7905 */ 7906 7907 /* 7908 * FAN ACCESS MODES 7909 * 7910 * TPACPI_FAN_RD_ACPI_GFAN: 7911 * ACPI GFAN method: returns fan level 7912 * 7913 * see TPACPI_FAN_WR_ACPI_SFAN 7914 * EC 0x2f (HFSP) not available if GFAN exists 7915 * 7916 * TPACPI_FAN_WR_ACPI_SFAN: 7917 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7918 * 7919 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7920 * it for writing. 7921 * 7922 * TPACPI_FAN_WR_TPEC: 7923 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7924 * Supported on almost all ThinkPads 7925 * 7926 * Fan speed changes of any sort (including those caused by the 7927 * disengaged mode) are usually done slowly by the firmware as the 7928 * maximum amount of fan duty cycle change per second seems to be 7929 * limited. 7930 * 7931 * Reading is not available if GFAN exists. 7932 * Writing is not available if SFAN exists. 7933 * 7934 * Bits 7935 * 7 automatic mode engaged; 7936 * (default operation mode of the ThinkPad) 7937 * fan level is ignored in this mode. 7938 * 6 full speed mode (takes precedence over bit 7); 7939 * not available on all thinkpads. May disable 7940 * the tachometer while the fan controller ramps up 7941 * the speed (which can take up to a few *minutes*). 7942 * Speeds up fan to 100% duty-cycle, which is far above 7943 * the standard RPM levels. It is not impossible that 7944 * it could cause hardware damage. 7945 * 5-3 unused in some models. Extra bits for fan level 7946 * in others, but still useless as all values above 7947 * 7 map to the same speed as level 7 in these models. 7948 * 2-0 fan level (0..7 usually) 7949 * 0x00 = stop 7950 * 0x07 = max (set when temperatures critical) 7951 * Some ThinkPads may have other levels, see 7952 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7953 * 7954 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7955 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7956 * does so, its initial value is meaningless (0x07). 7957 * 7958 * For firmware bugs, refer to: 7959 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7960 * 7961 * ---- 7962 * 7963 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7964 * Main fan tachometer reading (in RPM) 7965 * 7966 * This register is present on all ThinkPads with a new-style EC, and 7967 * it is known not to be present on the A21m/e, and T22, as there is 7968 * something else in offset 0x84 according to the ACPI DSDT. Other 7969 * ThinkPads from this same time period (and earlier) probably lack the 7970 * tachometer as well. 7971 * 7972 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 7973 * was never fixed by IBM to report the EC firmware version string 7974 * probably support the tachometer (like the early X models), so 7975 * detecting it is quite hard. We need more data to know for sure. 7976 * 7977 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 7978 * might result. 7979 * 7980 * FIRMWARE BUG: may go stale while the EC is switching to full speed 7981 * mode. 7982 * 7983 * For firmware bugs, refer to: 7984 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7985 * 7986 * ---- 7987 * 7988 * ThinkPad EC register 0x31 bit 0 (only on select models) 7989 * 7990 * When bit 0 of EC register 0x31 is zero, the tachometer registers 7991 * show the speed of the main fan. When bit 0 of EC register 0x31 7992 * is one, the tachometer registers show the speed of the auxiliary 7993 * fan. 7994 * 7995 * Fan control seems to affect both fans, regardless of the state 7996 * of this bit. 7997 * 7998 * So far, only the firmware for the X60/X61 non-tablet versions 7999 * seem to support this (firmware TP-7M). 8000 * 8001 * TPACPI_FAN_WR_ACPI_FANS: 8002 * ThinkPad X31, X40, X41. Not available in the X60. 8003 * 8004 * FANS ACPI handle: takes three arguments: low speed, medium speed, 8005 * high speed. ACPI DSDT seems to map these three speeds to levels 8006 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 8007 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 8008 * 8009 * The speeds are stored on handles 8010 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 8011 * 8012 * There are three default speed sets, accessible as handles: 8013 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 8014 * 8015 * ACPI DSDT switches which set is in use depending on various 8016 * factors. 8017 * 8018 * TPACPI_FAN_WR_TPEC is also available and should be used to 8019 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 8020 * but the ACPI tables just mention level 7. 8021 */ 8022 8023 enum { /* Fan control constants */ 8024 fan_status_offset = 0x2f, /* EC register 0x2f */ 8025 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 8026 * 0x84 must be read before 0x85 */ 8027 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 8028 bit 0 selects which fan is active */ 8029 8030 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 8031 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 8032 8033 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 8034 }; 8035 8036 enum fan_status_access_mode { 8037 TPACPI_FAN_NONE = 0, /* No fan status or control */ 8038 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 8039 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 8040 }; 8041 8042 enum fan_control_access_mode { 8043 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 8044 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 8045 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 8046 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 8047 }; 8048 8049 enum fan_control_commands { 8050 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 8051 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 8052 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 8053 * and also watchdog cmd */ 8054 }; 8055 8056 static bool fan_control_allowed; 8057 8058 static enum fan_status_access_mode fan_status_access_mode; 8059 static enum fan_control_access_mode fan_control_access_mode; 8060 static enum fan_control_commands fan_control_commands; 8061 8062 static u8 fan_control_initial_status; 8063 static u8 fan_control_desired_level; 8064 static u8 fan_control_resume_level; 8065 static int fan_watchdog_maxinterval; 8066 8067 static struct mutex fan_mutex; 8068 8069 static void fan_watchdog_fire(struct work_struct *ignored); 8070 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 8071 8072 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 8073 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 8074 "\\FSPD", /* 600e/x, 770e, 770x */ 8075 ); /* all others */ 8076 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8077 "JFNS", /* 770x-JL */ 8078 ); /* all others */ 8079 8080 /* 8081 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8082 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8083 * be in auto mode (0x80). 8084 * 8085 * This is corrected by any write to HFSP either by the driver, or 8086 * by the firmware. 8087 * 8088 * We assume 0x07 really means auto mode while this quirk is active, 8089 * as this is far more likely than the ThinkPad being in level 7, 8090 * which is only used by the firmware during thermal emergencies. 8091 * 8092 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8093 * TP-70 (T43, R52), which are known to be buggy. 8094 */ 8095 8096 static void fan_quirk1_setup(void) 8097 { 8098 if (fan_control_initial_status == 0x07) { 8099 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8100 tp_features.fan_ctrl_status_undef = 1; 8101 } 8102 } 8103 8104 static void fan_quirk1_handle(u8 *fan_status) 8105 { 8106 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8107 if (*fan_status != fan_control_initial_status) { 8108 /* something changed the HFSP regisnter since 8109 * driver init time, so it is not undefined 8110 * anymore */ 8111 tp_features.fan_ctrl_status_undef = 0; 8112 } else { 8113 /* Return most likely status. In fact, it 8114 * might be the only possible status */ 8115 *fan_status = TP_EC_FAN_AUTO; 8116 } 8117 } 8118 } 8119 8120 /* Select main fan on X60/X61, NOOP on others */ 8121 static bool fan_select_fan1(void) 8122 { 8123 if (tp_features.second_fan) { 8124 u8 val; 8125 8126 if (ec_read(fan_select_offset, &val) < 0) 8127 return false; 8128 val &= 0xFEU; 8129 if (ec_write(fan_select_offset, val) < 0) 8130 return false; 8131 } 8132 return true; 8133 } 8134 8135 /* Select secondary fan on X60/X61 */ 8136 static bool fan_select_fan2(void) 8137 { 8138 u8 val; 8139 8140 if (!tp_features.second_fan) 8141 return false; 8142 8143 if (ec_read(fan_select_offset, &val) < 0) 8144 return false; 8145 val |= 0x01U; 8146 if (ec_write(fan_select_offset, val) < 0) 8147 return false; 8148 8149 return true; 8150 } 8151 8152 /* 8153 * Call with fan_mutex held 8154 */ 8155 static void fan_update_desired_level(u8 status) 8156 { 8157 if ((status & 8158 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8159 if (status > 7) 8160 fan_control_desired_level = 7; 8161 else 8162 fan_control_desired_level = status; 8163 } 8164 } 8165 8166 static int fan_get_status(u8 *status) 8167 { 8168 u8 s; 8169 8170 /* TODO: 8171 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8172 8173 switch (fan_status_access_mode) { 8174 case TPACPI_FAN_RD_ACPI_GFAN: { 8175 /* 570, 600e/x, 770e, 770x */ 8176 int res; 8177 8178 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8179 return -EIO; 8180 8181 if (likely(status)) 8182 *status = res & 0x07; 8183 8184 break; 8185 } 8186 case TPACPI_FAN_RD_TPEC: 8187 /* all except 570, 600e/x, 770e, 770x */ 8188 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8189 return -EIO; 8190 8191 if (likely(status)) { 8192 *status = s; 8193 fan_quirk1_handle(status); 8194 } 8195 8196 break; 8197 8198 default: 8199 return -ENXIO; 8200 } 8201 8202 return 0; 8203 } 8204 8205 static int fan_get_status_safe(u8 *status) 8206 { 8207 int rc; 8208 u8 s; 8209 8210 if (mutex_lock_killable(&fan_mutex)) 8211 return -ERESTARTSYS; 8212 rc = fan_get_status(&s); 8213 if (!rc) 8214 fan_update_desired_level(s); 8215 mutex_unlock(&fan_mutex); 8216 8217 if (rc) 8218 return rc; 8219 if (status) 8220 *status = s; 8221 8222 return 0; 8223 } 8224 8225 static int fan_get_speed(unsigned int *speed) 8226 { 8227 u8 hi, lo; 8228 8229 switch (fan_status_access_mode) { 8230 case TPACPI_FAN_RD_TPEC: 8231 /* all except 570, 600e/x, 770e, 770x */ 8232 if (unlikely(!fan_select_fan1())) 8233 return -EIO; 8234 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8235 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8236 return -EIO; 8237 8238 if (likely(speed)) 8239 *speed = (hi << 8) | lo; 8240 8241 break; 8242 8243 default: 8244 return -ENXIO; 8245 } 8246 8247 return 0; 8248 } 8249 8250 static int fan2_get_speed(unsigned int *speed) 8251 { 8252 u8 hi, lo; 8253 bool rc; 8254 8255 switch (fan_status_access_mode) { 8256 case TPACPI_FAN_RD_TPEC: 8257 /* all except 570, 600e/x, 770e, 770x */ 8258 if (unlikely(!fan_select_fan2())) 8259 return -EIO; 8260 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8261 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8262 fan_select_fan1(); /* play it safe */ 8263 if (rc) 8264 return -EIO; 8265 8266 if (likely(speed)) 8267 *speed = (hi << 8) | lo; 8268 8269 break; 8270 8271 default: 8272 return -ENXIO; 8273 } 8274 8275 return 0; 8276 } 8277 8278 static int fan_set_level(int level) 8279 { 8280 if (!fan_control_allowed) 8281 return -EPERM; 8282 8283 switch (fan_control_access_mode) { 8284 case TPACPI_FAN_WR_ACPI_SFAN: 8285 if ((level < 0) || (level > 7)) 8286 return -EINVAL; 8287 8288 if (tp_features.second_fan_ctl) { 8289 if (!fan_select_fan2() || 8290 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8291 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8292 tp_features.second_fan_ctl = 0; 8293 } 8294 fan_select_fan1(); 8295 } 8296 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8297 return -EIO; 8298 break; 8299 8300 case TPACPI_FAN_WR_ACPI_FANS: 8301 case TPACPI_FAN_WR_TPEC: 8302 if (!(level & TP_EC_FAN_AUTO) && 8303 !(level & TP_EC_FAN_FULLSPEED) && 8304 ((level < 0) || (level > 7))) 8305 return -EINVAL; 8306 8307 /* safety net should the EC not support AUTO 8308 * or FULLSPEED mode bits and just ignore them */ 8309 if (level & TP_EC_FAN_FULLSPEED) 8310 level |= 7; /* safety min speed 7 */ 8311 else if (level & TP_EC_FAN_AUTO) 8312 level |= 4; /* safety min speed 4 */ 8313 8314 if (tp_features.second_fan_ctl) { 8315 if (!fan_select_fan2() || 8316 !acpi_ec_write(fan_status_offset, level)) { 8317 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8318 tp_features.second_fan_ctl = 0; 8319 } 8320 fan_select_fan1(); 8321 8322 } 8323 if (!acpi_ec_write(fan_status_offset, level)) 8324 return -EIO; 8325 else 8326 tp_features.fan_ctrl_status_undef = 0; 8327 break; 8328 8329 default: 8330 return -ENXIO; 8331 } 8332 8333 vdbg_printk(TPACPI_DBG_FAN, 8334 "fan control: set fan control register to 0x%02x\n", level); 8335 return 0; 8336 } 8337 8338 static int fan_set_level_safe(int level) 8339 { 8340 int rc; 8341 8342 if (!fan_control_allowed) 8343 return -EPERM; 8344 8345 if (mutex_lock_killable(&fan_mutex)) 8346 return -ERESTARTSYS; 8347 8348 if (level == TPACPI_FAN_LAST_LEVEL) 8349 level = fan_control_desired_level; 8350 8351 rc = fan_set_level(level); 8352 if (!rc) 8353 fan_update_desired_level(level); 8354 8355 mutex_unlock(&fan_mutex); 8356 return rc; 8357 } 8358 8359 static int fan_set_enable(void) 8360 { 8361 u8 s; 8362 int rc; 8363 8364 if (!fan_control_allowed) 8365 return -EPERM; 8366 8367 if (mutex_lock_killable(&fan_mutex)) 8368 return -ERESTARTSYS; 8369 8370 switch (fan_control_access_mode) { 8371 case TPACPI_FAN_WR_ACPI_FANS: 8372 case TPACPI_FAN_WR_TPEC: 8373 rc = fan_get_status(&s); 8374 if (rc < 0) 8375 break; 8376 8377 /* Don't go out of emergency fan mode */ 8378 if (s != 7) { 8379 s &= 0x07; 8380 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8381 } 8382 8383 if (!acpi_ec_write(fan_status_offset, s)) 8384 rc = -EIO; 8385 else { 8386 tp_features.fan_ctrl_status_undef = 0; 8387 rc = 0; 8388 } 8389 break; 8390 8391 case TPACPI_FAN_WR_ACPI_SFAN: 8392 rc = fan_get_status(&s); 8393 if (rc < 0) 8394 break; 8395 8396 s &= 0x07; 8397 8398 /* Set fan to at least level 4 */ 8399 s |= 4; 8400 8401 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8402 rc = -EIO; 8403 else 8404 rc = 0; 8405 break; 8406 8407 default: 8408 rc = -ENXIO; 8409 } 8410 8411 mutex_unlock(&fan_mutex); 8412 8413 if (!rc) 8414 vdbg_printk(TPACPI_DBG_FAN, 8415 "fan control: set fan control register to 0x%02x\n", 8416 s); 8417 return rc; 8418 } 8419 8420 static int fan_set_disable(void) 8421 { 8422 int rc; 8423 8424 if (!fan_control_allowed) 8425 return -EPERM; 8426 8427 if (mutex_lock_killable(&fan_mutex)) 8428 return -ERESTARTSYS; 8429 8430 rc = 0; 8431 switch (fan_control_access_mode) { 8432 case TPACPI_FAN_WR_ACPI_FANS: 8433 case TPACPI_FAN_WR_TPEC: 8434 if (!acpi_ec_write(fan_status_offset, 0x00)) 8435 rc = -EIO; 8436 else { 8437 fan_control_desired_level = 0; 8438 tp_features.fan_ctrl_status_undef = 0; 8439 } 8440 break; 8441 8442 case TPACPI_FAN_WR_ACPI_SFAN: 8443 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8444 rc = -EIO; 8445 else 8446 fan_control_desired_level = 0; 8447 break; 8448 8449 default: 8450 rc = -ENXIO; 8451 } 8452 8453 if (!rc) 8454 vdbg_printk(TPACPI_DBG_FAN, 8455 "fan control: set fan control register to 0\n"); 8456 8457 mutex_unlock(&fan_mutex); 8458 return rc; 8459 } 8460 8461 static int fan_set_speed(int speed) 8462 { 8463 int rc; 8464 8465 if (!fan_control_allowed) 8466 return -EPERM; 8467 8468 if (mutex_lock_killable(&fan_mutex)) 8469 return -ERESTARTSYS; 8470 8471 rc = 0; 8472 switch (fan_control_access_mode) { 8473 case TPACPI_FAN_WR_ACPI_FANS: 8474 if (speed >= 0 && speed <= 65535) { 8475 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8476 speed, speed, speed)) 8477 rc = -EIO; 8478 } else 8479 rc = -EINVAL; 8480 break; 8481 8482 default: 8483 rc = -ENXIO; 8484 } 8485 8486 mutex_unlock(&fan_mutex); 8487 return rc; 8488 } 8489 8490 static void fan_watchdog_reset(void) 8491 { 8492 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8493 return; 8494 8495 if (fan_watchdog_maxinterval > 0 && 8496 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8497 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8498 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8499 else 8500 cancel_delayed_work(&fan_watchdog_task); 8501 } 8502 8503 static void fan_watchdog_fire(struct work_struct *ignored) 8504 { 8505 int rc; 8506 8507 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8508 return; 8509 8510 pr_notice("fan watchdog: enabling fan\n"); 8511 rc = fan_set_enable(); 8512 if (rc < 0) { 8513 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8514 rc); 8515 /* reschedule for later */ 8516 fan_watchdog_reset(); 8517 } 8518 } 8519 8520 /* 8521 * SYSFS fan layout: hwmon compatible (device) 8522 * 8523 * pwm*_enable: 8524 * 0: "disengaged" mode 8525 * 1: manual mode 8526 * 2: native EC "auto" mode (recommended, hardware default) 8527 * 8528 * pwm*: set speed in manual mode, ignored otherwise. 8529 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8530 * interpolation. 8531 * 8532 * fan*_input: tachometer reading, RPM 8533 * 8534 * 8535 * SYSFS fan layout: extensions 8536 * 8537 * fan_watchdog (driver): 8538 * fan watchdog interval in seconds, 0 disables (default), max 120 8539 */ 8540 8541 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8542 static ssize_t fan_pwm1_enable_show(struct device *dev, 8543 struct device_attribute *attr, 8544 char *buf) 8545 { 8546 int res, mode; 8547 u8 status; 8548 8549 res = fan_get_status_safe(&status); 8550 if (res) 8551 return res; 8552 8553 if (status & TP_EC_FAN_FULLSPEED) { 8554 mode = 0; 8555 } else if (status & TP_EC_FAN_AUTO) { 8556 mode = 2; 8557 } else 8558 mode = 1; 8559 8560 return sysfs_emit(buf, "%d\n", mode); 8561 } 8562 8563 static ssize_t fan_pwm1_enable_store(struct device *dev, 8564 struct device_attribute *attr, 8565 const char *buf, size_t count) 8566 { 8567 unsigned long t; 8568 int res, level; 8569 8570 if (parse_strtoul(buf, 2, &t)) 8571 return -EINVAL; 8572 8573 tpacpi_disclose_usertask("hwmon pwm1_enable", 8574 "set fan mode to %lu\n", t); 8575 8576 switch (t) { 8577 case 0: 8578 level = TP_EC_FAN_FULLSPEED; 8579 break; 8580 case 1: 8581 level = TPACPI_FAN_LAST_LEVEL; 8582 break; 8583 case 2: 8584 level = TP_EC_FAN_AUTO; 8585 break; 8586 case 3: 8587 /* reserved for software-controlled auto mode */ 8588 return -ENOSYS; 8589 default: 8590 return -EINVAL; 8591 } 8592 8593 res = fan_set_level_safe(level); 8594 if (res == -ENXIO) 8595 return -EINVAL; 8596 else if (res < 0) 8597 return res; 8598 8599 fan_watchdog_reset(); 8600 8601 return count; 8602 } 8603 8604 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8605 fan_pwm1_enable_show, fan_pwm1_enable_store); 8606 8607 /* sysfs fan pwm1 ------------------------------------------------------ */ 8608 static ssize_t fan_pwm1_show(struct device *dev, 8609 struct device_attribute *attr, 8610 char *buf) 8611 { 8612 int res; 8613 u8 status; 8614 8615 res = fan_get_status_safe(&status); 8616 if (res) 8617 return res; 8618 8619 if ((status & 8620 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8621 status = fan_control_desired_level; 8622 8623 if (status > 7) 8624 status = 7; 8625 8626 return sysfs_emit(buf, "%u\n", (status * 255) / 7); 8627 } 8628 8629 static ssize_t fan_pwm1_store(struct device *dev, 8630 struct device_attribute *attr, 8631 const char *buf, size_t count) 8632 { 8633 unsigned long s; 8634 int rc; 8635 u8 status, newlevel; 8636 8637 if (parse_strtoul(buf, 255, &s)) 8638 return -EINVAL; 8639 8640 tpacpi_disclose_usertask("hwmon pwm1", 8641 "set fan speed to %lu\n", s); 8642 8643 /* scale down from 0-255 to 0-7 */ 8644 newlevel = (s >> 5) & 0x07; 8645 8646 if (mutex_lock_killable(&fan_mutex)) 8647 return -ERESTARTSYS; 8648 8649 rc = fan_get_status(&status); 8650 if (!rc && (status & 8651 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8652 rc = fan_set_level(newlevel); 8653 if (rc == -ENXIO) 8654 rc = -EINVAL; 8655 else if (!rc) { 8656 fan_update_desired_level(newlevel); 8657 fan_watchdog_reset(); 8658 } 8659 } 8660 8661 mutex_unlock(&fan_mutex); 8662 return (rc) ? rc : count; 8663 } 8664 8665 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8666 8667 /* sysfs fan fan1_input ------------------------------------------------ */ 8668 static ssize_t fan_fan1_input_show(struct device *dev, 8669 struct device_attribute *attr, 8670 char *buf) 8671 { 8672 int res; 8673 unsigned int speed; 8674 8675 res = fan_get_speed(&speed); 8676 if (res < 0) 8677 return res; 8678 8679 return sysfs_emit(buf, "%u\n", speed); 8680 } 8681 8682 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8683 8684 /* sysfs fan fan2_input ------------------------------------------------ */ 8685 static ssize_t fan_fan2_input_show(struct device *dev, 8686 struct device_attribute *attr, 8687 char *buf) 8688 { 8689 int res; 8690 unsigned int speed; 8691 8692 res = fan2_get_speed(&speed); 8693 if (res < 0) 8694 return res; 8695 8696 return sysfs_emit(buf, "%u\n", speed); 8697 } 8698 8699 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8700 8701 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8702 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8703 { 8704 return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval); 8705 } 8706 8707 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8708 size_t count) 8709 { 8710 unsigned long t; 8711 8712 if (parse_strtoul(buf, 120, &t)) 8713 return -EINVAL; 8714 8715 if (!fan_control_allowed) 8716 return -EPERM; 8717 8718 fan_watchdog_maxinterval = t; 8719 fan_watchdog_reset(); 8720 8721 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8722 8723 return count; 8724 } 8725 static DRIVER_ATTR_RW(fan_watchdog); 8726 8727 /* --------------------------------------------------------------------- */ 8728 static struct attribute *fan_attributes[] = { 8729 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr, 8730 &dev_attr_fan1_input.attr, 8731 NULL, /* for fan2_input */ 8732 NULL 8733 }; 8734 8735 static const struct attribute_group fan_attr_group = { 8736 .attrs = fan_attributes, 8737 }; 8738 8739 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ 8740 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8741 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8742 8743 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8744 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8745 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8746 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8747 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8748 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8749 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8750 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8751 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8752 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8753 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8754 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8755 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ 8756 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8757 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8758 TPACPI_Q_LNV3('N', '2', 'V', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (3nd gen) */ 8759 TPACPI_Q_LNV3('N', '4', '0', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (4nd gen) */ 8760 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8761 TPACPI_Q_LNV3('N', '3', '2', TPACPI_FAN_2CTL), /* X1 Carbon (9th gen) */ 8762 }; 8763 8764 static int __init fan_init(struct ibm_init_struct *iibm) 8765 { 8766 int rc; 8767 unsigned long quirks; 8768 8769 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8770 "initializing fan subdriver\n"); 8771 8772 mutex_init(&fan_mutex); 8773 fan_status_access_mode = TPACPI_FAN_NONE; 8774 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8775 fan_control_commands = 0; 8776 fan_watchdog_maxinterval = 0; 8777 tp_features.fan_ctrl_status_undef = 0; 8778 tp_features.second_fan = 0; 8779 tp_features.second_fan_ctl = 0; 8780 fan_control_desired_level = 7; 8781 8782 if (tpacpi_is_ibm()) { 8783 TPACPI_ACPIHANDLE_INIT(fans); 8784 TPACPI_ACPIHANDLE_INIT(gfan); 8785 TPACPI_ACPIHANDLE_INIT(sfan); 8786 } 8787 8788 quirks = tpacpi_check_quirks(fan_quirk_table, 8789 ARRAY_SIZE(fan_quirk_table)); 8790 8791 if (gfan_handle) { 8792 /* 570, 600e/x, 770e, 770x */ 8793 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8794 } else { 8795 /* all other ThinkPads: note that even old-style 8796 * ThinkPad ECs supports the fan control register */ 8797 if (likely(acpi_ec_read(fan_status_offset, 8798 &fan_control_initial_status))) { 8799 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 8800 if (quirks & TPACPI_FAN_Q1) 8801 fan_quirk1_setup(); 8802 if (quirks & TPACPI_FAN_2FAN) { 8803 tp_features.second_fan = 1; 8804 pr_info("secondary fan support enabled\n"); 8805 } 8806 if (quirks & TPACPI_FAN_2CTL) { 8807 tp_features.second_fan = 1; 8808 tp_features.second_fan_ctl = 1; 8809 pr_info("secondary fan control enabled\n"); 8810 } 8811 } else { 8812 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8813 return 1; 8814 } 8815 } 8816 8817 if (sfan_handle) { 8818 /* 570, 770x-JL */ 8819 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8820 fan_control_commands |= 8821 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8822 } else { 8823 if (!gfan_handle) { 8824 /* gfan without sfan means no fan control */ 8825 /* all other models implement TP EC 0x2f control */ 8826 8827 if (fans_handle) { 8828 /* X31, X40, X41 */ 8829 fan_control_access_mode = 8830 TPACPI_FAN_WR_ACPI_FANS; 8831 fan_control_commands |= 8832 TPACPI_FAN_CMD_SPEED | 8833 TPACPI_FAN_CMD_LEVEL | 8834 TPACPI_FAN_CMD_ENABLE; 8835 } else { 8836 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8837 fan_control_commands |= 8838 TPACPI_FAN_CMD_LEVEL | 8839 TPACPI_FAN_CMD_ENABLE; 8840 } 8841 } 8842 } 8843 8844 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8845 "fan is %s, modes %d, %d\n", 8846 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8847 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8848 fan_status_access_mode, fan_control_access_mode); 8849 8850 /* fan control master switch */ 8851 if (!fan_control_allowed) { 8852 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8853 fan_control_commands = 0; 8854 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8855 "fan control features disabled by parameter\n"); 8856 } 8857 8858 /* update fan_control_desired_level */ 8859 if (fan_status_access_mode != TPACPI_FAN_NONE) 8860 fan_get_status_safe(NULL); 8861 8862 if (fan_status_access_mode != TPACPI_FAN_NONE || 8863 fan_control_access_mode != TPACPI_FAN_WR_NONE) { 8864 if (tp_features.second_fan) { 8865 /* attach second fan tachometer */ 8866 fan_attributes[ARRAY_SIZE(fan_attributes)-2] = 8867 &dev_attr_fan2_input.attr; 8868 } 8869 rc = sysfs_create_group(&tpacpi_hwmon->kobj, 8870 &fan_attr_group); 8871 if (rc < 0) 8872 return rc; 8873 8874 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, 8875 &driver_attr_fan_watchdog); 8876 if (rc < 0) { 8877 sysfs_remove_group(&tpacpi_hwmon->kobj, 8878 &fan_attr_group); 8879 return rc; 8880 } 8881 return 0; 8882 } else 8883 return 1; 8884 } 8885 8886 static void fan_exit(void) 8887 { 8888 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8889 "cancelling any pending fan watchdog tasks\n"); 8890 8891 /* FIXME: can we really do this unconditionally? */ 8892 sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group); 8893 driver_remove_file(&tpacpi_hwmon_pdriver.driver, 8894 &driver_attr_fan_watchdog); 8895 8896 cancel_delayed_work(&fan_watchdog_task); 8897 flush_workqueue(tpacpi_wq); 8898 } 8899 8900 static void fan_suspend(void) 8901 { 8902 int rc; 8903 8904 if (!fan_control_allowed) 8905 return; 8906 8907 /* Store fan status in cache */ 8908 fan_control_resume_level = 0; 8909 rc = fan_get_status_safe(&fan_control_resume_level); 8910 if (rc < 0) 8911 pr_notice("failed to read fan level for later restore during resume: %d\n", 8912 rc); 8913 8914 /* if it is undefined, don't attempt to restore it. 8915 * KEEP THIS LAST */ 8916 if (tp_features.fan_ctrl_status_undef) 8917 fan_control_resume_level = 0; 8918 } 8919 8920 static void fan_resume(void) 8921 { 8922 u8 current_level = 7; 8923 bool do_set = false; 8924 int rc; 8925 8926 /* DSDT *always* updates status on resume */ 8927 tp_features.fan_ctrl_status_undef = 0; 8928 8929 if (!fan_control_allowed || 8930 !fan_control_resume_level || 8931 (fan_get_status_safe(¤t_level) < 0)) 8932 return; 8933 8934 switch (fan_control_access_mode) { 8935 case TPACPI_FAN_WR_ACPI_SFAN: 8936 /* never decrease fan level */ 8937 do_set = (fan_control_resume_level > current_level); 8938 break; 8939 case TPACPI_FAN_WR_ACPI_FANS: 8940 case TPACPI_FAN_WR_TPEC: 8941 /* never decrease fan level, scale is: 8942 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 8943 * 8944 * We expect the firmware to set either 7 or AUTO, but we 8945 * handle FULLSPEED out of paranoia. 8946 * 8947 * So, we can safely only restore FULLSPEED or 7, anything 8948 * else could slow the fan. Restoring AUTO is useless, at 8949 * best that's exactly what the DSDT already set (it is the 8950 * slower it uses). 8951 * 8952 * Always keep in mind that the DSDT *will* have set the 8953 * fans to what the vendor supposes is the best level. We 8954 * muck with it only to speed the fan up. 8955 */ 8956 if (fan_control_resume_level != 7 && 8957 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 8958 return; 8959 else 8960 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 8961 (current_level != fan_control_resume_level); 8962 break; 8963 default: 8964 return; 8965 } 8966 if (do_set) { 8967 pr_notice("restoring fan level to 0x%02x\n", 8968 fan_control_resume_level); 8969 rc = fan_set_level_safe(fan_control_resume_level); 8970 if (rc < 0) 8971 pr_notice("failed to restore fan level: %d\n", rc); 8972 } 8973 } 8974 8975 static int fan_read(struct seq_file *m) 8976 { 8977 int rc; 8978 u8 status; 8979 unsigned int speed = 0; 8980 8981 switch (fan_status_access_mode) { 8982 case TPACPI_FAN_RD_ACPI_GFAN: 8983 /* 570, 600e/x, 770e, 770x */ 8984 rc = fan_get_status_safe(&status); 8985 if (rc < 0) 8986 return rc; 8987 8988 seq_printf(m, "status:\t\t%s\n" 8989 "level:\t\t%d\n", 8990 (status != 0) ? "enabled" : "disabled", status); 8991 break; 8992 8993 case TPACPI_FAN_RD_TPEC: 8994 /* all except 570, 600e/x, 770e, 770x */ 8995 rc = fan_get_status_safe(&status); 8996 if (rc < 0) 8997 return rc; 8998 8999 seq_printf(m, "status:\t\t%s\n", 9000 (status != 0) ? "enabled" : "disabled"); 9001 9002 rc = fan_get_speed(&speed); 9003 if (rc < 0) 9004 return rc; 9005 9006 seq_printf(m, "speed:\t\t%d\n", speed); 9007 9008 if (status & TP_EC_FAN_FULLSPEED) 9009 /* Disengaged mode takes precedence */ 9010 seq_printf(m, "level:\t\tdisengaged\n"); 9011 else if (status & TP_EC_FAN_AUTO) 9012 seq_printf(m, "level:\t\tauto\n"); 9013 else 9014 seq_printf(m, "level:\t\t%d\n", status); 9015 break; 9016 9017 case TPACPI_FAN_NONE: 9018 default: 9019 seq_printf(m, "status:\t\tnot supported\n"); 9020 } 9021 9022 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9023 seq_printf(m, "commands:\tlevel <level>"); 9024 9025 switch (fan_control_access_mode) { 9026 case TPACPI_FAN_WR_ACPI_SFAN: 9027 seq_printf(m, " (<level> is 0-7)\n"); 9028 break; 9029 9030 default: 9031 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9032 break; 9033 } 9034 } 9035 9036 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9037 seq_printf(m, "commands:\tenable, disable\n" 9038 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9039 9040 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9041 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9042 9043 return 0; 9044 } 9045 9046 static int fan_write_cmd_level(const char *cmd, int *rc) 9047 { 9048 int level; 9049 9050 if (strlencmp(cmd, "level auto") == 0) 9051 level = TP_EC_FAN_AUTO; 9052 else if ((strlencmp(cmd, "level disengaged") == 0) || 9053 (strlencmp(cmd, "level full-speed") == 0)) 9054 level = TP_EC_FAN_FULLSPEED; 9055 else if (sscanf(cmd, "level %d", &level) != 1) 9056 return 0; 9057 9058 *rc = fan_set_level_safe(level); 9059 if (*rc == -ENXIO) 9060 pr_err("level command accepted for unsupported access mode %d\n", 9061 fan_control_access_mode); 9062 else if (!*rc) 9063 tpacpi_disclose_usertask("procfs fan", 9064 "set level to %d\n", level); 9065 9066 return 1; 9067 } 9068 9069 static int fan_write_cmd_enable(const char *cmd, int *rc) 9070 { 9071 if (strlencmp(cmd, "enable") != 0) 9072 return 0; 9073 9074 *rc = fan_set_enable(); 9075 if (*rc == -ENXIO) 9076 pr_err("enable command accepted for unsupported access mode %d\n", 9077 fan_control_access_mode); 9078 else if (!*rc) 9079 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9080 9081 return 1; 9082 } 9083 9084 static int fan_write_cmd_disable(const char *cmd, int *rc) 9085 { 9086 if (strlencmp(cmd, "disable") != 0) 9087 return 0; 9088 9089 *rc = fan_set_disable(); 9090 if (*rc == -ENXIO) 9091 pr_err("disable command accepted for unsupported access mode %d\n", 9092 fan_control_access_mode); 9093 else if (!*rc) 9094 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9095 9096 return 1; 9097 } 9098 9099 static int fan_write_cmd_speed(const char *cmd, int *rc) 9100 { 9101 int speed; 9102 9103 /* TODO: 9104 * Support speed <low> <medium> <high> ? */ 9105 9106 if (sscanf(cmd, "speed %d", &speed) != 1) 9107 return 0; 9108 9109 *rc = fan_set_speed(speed); 9110 if (*rc == -ENXIO) 9111 pr_err("speed command accepted for unsupported access mode %d\n", 9112 fan_control_access_mode); 9113 else if (!*rc) 9114 tpacpi_disclose_usertask("procfs fan", 9115 "set speed to %d\n", speed); 9116 9117 return 1; 9118 } 9119 9120 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9121 { 9122 int interval; 9123 9124 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9125 return 0; 9126 9127 if (interval < 0 || interval > 120) 9128 *rc = -EINVAL; 9129 else { 9130 fan_watchdog_maxinterval = interval; 9131 tpacpi_disclose_usertask("procfs fan", 9132 "set watchdog timer to %d\n", 9133 interval); 9134 } 9135 9136 return 1; 9137 } 9138 9139 static int fan_write(char *buf) 9140 { 9141 char *cmd; 9142 int rc = 0; 9143 9144 while (!rc && (cmd = strsep(&buf, ","))) { 9145 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9146 fan_write_cmd_level(cmd, &rc)) && 9147 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9148 (fan_write_cmd_enable(cmd, &rc) || 9149 fan_write_cmd_disable(cmd, &rc) || 9150 fan_write_cmd_watchdog(cmd, &rc))) && 9151 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9152 fan_write_cmd_speed(cmd, &rc)) 9153 ) 9154 rc = -EINVAL; 9155 else if (!rc) 9156 fan_watchdog_reset(); 9157 } 9158 9159 return rc; 9160 } 9161 9162 static struct ibm_struct fan_driver_data = { 9163 .name = "fan", 9164 .read = fan_read, 9165 .write = fan_write, 9166 .exit = fan_exit, 9167 .suspend = fan_suspend, 9168 .resume = fan_resume, 9169 }; 9170 9171 /************************************************************************* 9172 * Mute LED subdriver 9173 */ 9174 9175 #define TPACPI_LED_MAX 2 9176 9177 struct tp_led_table { 9178 acpi_string name; 9179 int on_value; 9180 int off_value; 9181 int state; 9182 }; 9183 9184 static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9185 [LED_AUDIO_MUTE] = { 9186 .name = "SSMS", 9187 .on_value = 1, 9188 .off_value = 0, 9189 }, 9190 [LED_AUDIO_MICMUTE] = { 9191 .name = "MMTS", 9192 .on_value = 2, 9193 .off_value = 0, 9194 }, 9195 }; 9196 9197 static int mute_led_on_off(struct tp_led_table *t, bool state) 9198 { 9199 acpi_handle temp; 9200 int output; 9201 9202 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9203 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9204 return -EIO; 9205 } 9206 9207 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9208 state ? t->on_value : t->off_value)) 9209 return -EIO; 9210 9211 t->state = state; 9212 return state; 9213 } 9214 9215 static int tpacpi_led_set(int whichled, bool on) 9216 { 9217 struct tp_led_table *t; 9218 9219 t = &led_tables[whichled]; 9220 if (t->state < 0 || t->state == on) 9221 return t->state; 9222 return mute_led_on_off(t, on); 9223 } 9224 9225 static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9226 enum led_brightness brightness) 9227 { 9228 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9229 } 9230 9231 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9232 enum led_brightness brightness) 9233 { 9234 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9235 } 9236 9237 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9238 [LED_AUDIO_MUTE] = { 9239 .name = "platform::mute", 9240 .max_brightness = 1, 9241 .brightness_set_blocking = tpacpi_led_mute_set, 9242 .default_trigger = "audio-mute", 9243 }, 9244 [LED_AUDIO_MICMUTE] = { 9245 .name = "platform::micmute", 9246 .max_brightness = 1, 9247 .brightness_set_blocking = tpacpi_led_micmute_set, 9248 .default_trigger = "audio-micmute", 9249 }, 9250 }; 9251 9252 static int mute_led_init(struct ibm_init_struct *iibm) 9253 { 9254 acpi_handle temp; 9255 int i, err; 9256 9257 for (i = 0; i < TPACPI_LED_MAX; i++) { 9258 struct tp_led_table *t = &led_tables[i]; 9259 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9260 t->state = -ENODEV; 9261 continue; 9262 } 9263 9264 mute_led_cdev[i].brightness = ledtrig_audio_get(i); 9265 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9266 if (err < 0) { 9267 while (i--) 9268 led_classdev_unregister(&mute_led_cdev[i]); 9269 return err; 9270 } 9271 } 9272 return 0; 9273 } 9274 9275 static void mute_led_exit(void) 9276 { 9277 int i; 9278 9279 for (i = 0; i < TPACPI_LED_MAX; i++) { 9280 led_classdev_unregister(&mute_led_cdev[i]); 9281 tpacpi_led_set(i, false); 9282 } 9283 } 9284 9285 static void mute_led_resume(void) 9286 { 9287 int i; 9288 9289 for (i = 0; i < TPACPI_LED_MAX; i++) { 9290 struct tp_led_table *t = &led_tables[i]; 9291 if (t->state >= 0) 9292 mute_led_on_off(t, t->state); 9293 } 9294 } 9295 9296 static struct ibm_struct mute_led_driver_data = { 9297 .name = "mute_led", 9298 .exit = mute_led_exit, 9299 .resume = mute_led_resume, 9300 }; 9301 9302 /* 9303 * Battery Wear Control Driver 9304 * Contact: Ognjen Galic <smclt30p@gmail.com> 9305 */ 9306 9307 /* Metadata */ 9308 9309 #define GET_START "BCTG" 9310 #define SET_START "BCCS" 9311 #define GET_STOP "BCSG" 9312 #define SET_STOP "BCSS" 9313 9314 enum { 9315 BAT_ANY = 0, 9316 BAT_PRIMARY = 1, 9317 BAT_SECONDARY = 2 9318 }; 9319 9320 enum { 9321 /* Error condition bit */ 9322 METHOD_ERR = BIT(31), 9323 }; 9324 9325 enum { 9326 /* This is used in the get/set helpers */ 9327 THRESHOLD_START, 9328 THRESHOLD_STOP, 9329 }; 9330 9331 struct tpacpi_battery_data { 9332 int charge_start; 9333 int start_support; 9334 int charge_stop; 9335 int stop_support; 9336 }; 9337 9338 struct tpacpi_battery_driver_data { 9339 struct tpacpi_battery_data batteries[3]; 9340 int individual_addressing; 9341 }; 9342 9343 static struct tpacpi_battery_driver_data battery_info; 9344 9345 /* ACPI helpers/functions/probes */ 9346 9347 /** 9348 * This evaluates a ACPI method call specific to the battery 9349 * ACPI extension. The specifics are that an error is marked 9350 * in the 32rd bit of the response, so we just check that here. 9351 */ 9352 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9353 { 9354 int response; 9355 9356 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9357 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9358 return AE_ERROR; 9359 } 9360 if (response & METHOD_ERR) { 9361 acpi_handle_err(hkey_handle, 9362 "%s evaluated but flagged as error", method); 9363 return AE_ERROR; 9364 } 9365 *ret = response; 9366 return AE_OK; 9367 } 9368 9369 static int tpacpi_battery_get(int what, int battery, int *ret) 9370 { 9371 switch (what) { 9372 case THRESHOLD_START: 9373 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) 9374 return -ENODEV; 9375 9376 /* The value is in the low 8 bits of the response */ 9377 *ret = *ret & 0xFF; 9378 return 0; 9379 case THRESHOLD_STOP: 9380 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) 9381 return -ENODEV; 9382 /* Value is in lower 8 bits */ 9383 *ret = *ret & 0xFF; 9384 /* 9385 * On the stop value, if we return 0 that 9386 * does not make any sense. 0 means Default, which 9387 * means that charging stops at 100%, so we return 9388 * that. 9389 */ 9390 if (*ret == 0) 9391 *ret = 100; 9392 return 0; 9393 default: 9394 pr_crit("wrong parameter: %d", what); 9395 return -EINVAL; 9396 } 9397 } 9398 9399 static int tpacpi_battery_set(int what, int battery, int value) 9400 { 9401 int param, ret; 9402 /* The first 8 bits are the value of the threshold */ 9403 param = value; 9404 /* The battery ID is in bits 8-9, 2 bits */ 9405 param |= battery << 8; 9406 9407 switch (what) { 9408 case THRESHOLD_START: 9409 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9410 pr_err("failed to set charge threshold on battery %d", 9411 battery); 9412 return -ENODEV; 9413 } 9414 return 0; 9415 case THRESHOLD_STOP: 9416 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9417 pr_err("failed to set stop threshold: %d", battery); 9418 return -ENODEV; 9419 } 9420 return 0; 9421 default: 9422 pr_crit("wrong parameter: %d", what); 9423 return -EINVAL; 9424 } 9425 } 9426 9427 static int tpacpi_battery_probe(int battery) 9428 { 9429 int ret = 0; 9430 9431 memset(&battery_info.batteries[battery], 0, 9432 sizeof(battery_info.batteries[battery])); 9433 9434 /* 9435 * 1) Get the current start threshold 9436 * 2) Check for support 9437 * 3) Get the current stop threshold 9438 * 4) Check for support 9439 */ 9440 if (acpi_has_method(hkey_handle, GET_START)) { 9441 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9442 pr_err("Error probing battery %d\n", battery); 9443 return -ENODEV; 9444 } 9445 /* Individual addressing is in bit 9 */ 9446 if (ret & BIT(9)) 9447 battery_info.individual_addressing = true; 9448 /* Support is marked in bit 8 */ 9449 if (ret & BIT(8)) 9450 battery_info.batteries[battery].start_support = 1; 9451 else 9452 return -ENODEV; 9453 if (tpacpi_battery_get(THRESHOLD_START, battery, 9454 &battery_info.batteries[battery].charge_start)) { 9455 pr_err("Error probing battery %d\n", battery); 9456 return -ENODEV; 9457 } 9458 } 9459 if (acpi_has_method(hkey_handle, GET_STOP)) { 9460 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9461 pr_err("Error probing battery stop; %d\n", battery); 9462 return -ENODEV; 9463 } 9464 /* Support is marked in bit 8 */ 9465 if (ret & BIT(8)) 9466 battery_info.batteries[battery].stop_support = 1; 9467 else 9468 return -ENODEV; 9469 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9470 &battery_info.batteries[battery].charge_stop)) { 9471 pr_err("Error probing battery stop: %d\n", battery); 9472 return -ENODEV; 9473 } 9474 } 9475 pr_info("battery %d registered (start %d, stop %d)", 9476 battery, 9477 battery_info.batteries[battery].charge_start, 9478 battery_info.batteries[battery].charge_stop); 9479 9480 return 0; 9481 } 9482 9483 /* General helper functions */ 9484 9485 static int tpacpi_battery_get_id(const char *battery_name) 9486 { 9487 9488 if (strcmp(battery_name, "BAT0") == 0 || 9489 tp_features.battery_force_primary) 9490 return BAT_PRIMARY; 9491 if (strcmp(battery_name, "BAT1") == 0) 9492 return BAT_SECONDARY; 9493 /* 9494 * If for some reason the battery is not BAT0 nor is it 9495 * BAT1, we will assume it's the default, first battery, 9496 * AKA primary. 9497 */ 9498 pr_warn("unknown battery %s, assuming primary", battery_name); 9499 return BAT_PRIMARY; 9500 } 9501 9502 /* sysfs interface */ 9503 9504 static ssize_t tpacpi_battery_store(int what, 9505 struct device *dev, 9506 const char *buf, size_t count) 9507 { 9508 struct power_supply *supply = to_power_supply(dev); 9509 unsigned long value; 9510 int battery, rval; 9511 /* 9512 * Some systems have support for more than 9513 * one battery. If that is the case, 9514 * tpacpi_battery_probe marked that addressing 9515 * them individually is supported, so we do that 9516 * based on the device struct. 9517 * 9518 * On systems that are not supported, we assume 9519 * the primary as most of the ACPI calls fail 9520 * with "Any Battery" as the parameter. 9521 */ 9522 if (battery_info.individual_addressing) 9523 /* BAT_PRIMARY or BAT_SECONDARY */ 9524 battery = tpacpi_battery_get_id(supply->desc->name); 9525 else 9526 battery = BAT_PRIMARY; 9527 9528 rval = kstrtoul(buf, 10, &value); 9529 if (rval) 9530 return rval; 9531 9532 switch (what) { 9533 case THRESHOLD_START: 9534 if (!battery_info.batteries[battery].start_support) 9535 return -ENODEV; 9536 /* valid values are [0, 99] */ 9537 if (value > 99) 9538 return -EINVAL; 9539 if (value > battery_info.batteries[battery].charge_stop) 9540 return -EINVAL; 9541 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9542 return -ENODEV; 9543 battery_info.batteries[battery].charge_start = value; 9544 return count; 9545 9546 case THRESHOLD_STOP: 9547 if (!battery_info.batteries[battery].stop_support) 9548 return -ENODEV; 9549 /* valid values are [1, 100] */ 9550 if (value < 1 || value > 100) 9551 return -EINVAL; 9552 if (value < battery_info.batteries[battery].charge_start) 9553 return -EINVAL; 9554 battery_info.batteries[battery].charge_stop = value; 9555 /* 9556 * When 100 is passed to stop, we need to flip 9557 * it to 0 as that the EC understands that as 9558 * "Default", which will charge to 100% 9559 */ 9560 if (value == 100) 9561 value = 0; 9562 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9563 return -EINVAL; 9564 return count; 9565 default: 9566 pr_crit("Wrong parameter: %d", what); 9567 return -EINVAL; 9568 } 9569 return count; 9570 } 9571 9572 static ssize_t tpacpi_battery_show(int what, 9573 struct device *dev, 9574 char *buf) 9575 { 9576 struct power_supply *supply = to_power_supply(dev); 9577 int ret, battery; 9578 /* 9579 * Some systems have support for more than 9580 * one battery. If that is the case, 9581 * tpacpi_battery_probe marked that addressing 9582 * them individually is supported, so we; 9583 * based on the device struct. 9584 * 9585 * On systems that are not supported, we assume 9586 * the primary as most of the ACPI calls fail 9587 * with "Any Battery" as the parameter. 9588 */ 9589 if (battery_info.individual_addressing) 9590 /* BAT_PRIMARY or BAT_SECONDARY */ 9591 battery = tpacpi_battery_get_id(supply->desc->name); 9592 else 9593 battery = BAT_PRIMARY; 9594 if (tpacpi_battery_get(what, battery, &ret)) 9595 return -ENODEV; 9596 return sprintf(buf, "%d\n", ret); 9597 } 9598 9599 static ssize_t charge_control_start_threshold_show(struct device *device, 9600 struct device_attribute *attr, 9601 char *buf) 9602 { 9603 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9604 } 9605 9606 static ssize_t charge_control_end_threshold_show(struct device *device, 9607 struct device_attribute *attr, 9608 char *buf) 9609 { 9610 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9611 } 9612 9613 static ssize_t charge_control_start_threshold_store(struct device *dev, 9614 struct device_attribute *attr, 9615 const char *buf, size_t count) 9616 { 9617 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9618 } 9619 9620 static ssize_t charge_control_end_threshold_store(struct device *dev, 9621 struct device_attribute *attr, 9622 const char *buf, size_t count) 9623 { 9624 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9625 } 9626 9627 static DEVICE_ATTR_RW(charge_control_start_threshold); 9628 static DEVICE_ATTR_RW(charge_control_end_threshold); 9629 static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9630 charge_start_threshold, 9631 0644, 9632 charge_control_start_threshold_show, 9633 charge_control_start_threshold_store 9634 ); 9635 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9636 charge_stop_threshold, 9637 0644, 9638 charge_control_end_threshold_show, 9639 charge_control_end_threshold_store 9640 ); 9641 9642 static struct attribute *tpacpi_battery_attrs[] = { 9643 &dev_attr_charge_control_start_threshold.attr, 9644 &dev_attr_charge_control_end_threshold.attr, 9645 &dev_attr_charge_start_threshold.attr, 9646 &dev_attr_charge_stop_threshold.attr, 9647 NULL, 9648 }; 9649 9650 ATTRIBUTE_GROUPS(tpacpi_battery); 9651 9652 /* ACPI battery hooking */ 9653 9654 static int tpacpi_battery_add(struct power_supply *battery) 9655 { 9656 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9657 9658 if (tpacpi_battery_probe(batteryid)) 9659 return -ENODEV; 9660 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9661 return -ENODEV; 9662 return 0; 9663 } 9664 9665 static int tpacpi_battery_remove(struct power_supply *battery) 9666 { 9667 device_remove_groups(&battery->dev, tpacpi_battery_groups); 9668 return 0; 9669 } 9670 9671 static struct acpi_battery_hook battery_hook = { 9672 .add_battery = tpacpi_battery_add, 9673 .remove_battery = tpacpi_battery_remove, 9674 .name = "ThinkPad Battery Extension", 9675 }; 9676 9677 /* Subdriver init/exit */ 9678 9679 static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 9680 /* 9681 * Individual addressing is broken on models that expose the 9682 * primary battery as BAT1. 9683 */ 9684 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 9685 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 9686 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 9687 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 9688 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 9689 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 9690 }; 9691 9692 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 9693 { 9694 memset(&battery_info, 0, sizeof(battery_info)); 9695 9696 tp_features.battery_force_primary = tpacpi_check_quirks( 9697 battery_quirk_table, 9698 ARRAY_SIZE(battery_quirk_table)); 9699 9700 battery_hook_register(&battery_hook); 9701 return 0; 9702 } 9703 9704 static void tpacpi_battery_exit(void) 9705 { 9706 battery_hook_unregister(&battery_hook); 9707 } 9708 9709 static struct ibm_struct battery_driver_data = { 9710 .name = "battery", 9711 .exit = tpacpi_battery_exit, 9712 }; 9713 9714 /************************************************************************* 9715 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 9716 */ 9717 9718 static int lcdshadow_state; 9719 9720 static int lcdshadow_on_off(bool state) 9721 { 9722 acpi_handle set_shadow_handle; 9723 int output; 9724 9725 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSSS", &set_shadow_handle))) { 9726 pr_warn("Thinkpad ACPI has no %s interface.\n", "SSSS"); 9727 return -EIO; 9728 } 9729 9730 if (!acpi_evalf(set_shadow_handle, &output, NULL, "dd", (int)state)) 9731 return -EIO; 9732 9733 lcdshadow_state = state; 9734 return 0; 9735 } 9736 9737 static int lcdshadow_set(bool on) 9738 { 9739 if (lcdshadow_state < 0) 9740 return lcdshadow_state; 9741 if (lcdshadow_state == on) 9742 return 0; 9743 return lcdshadow_on_off(on); 9744 } 9745 9746 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 9747 { 9748 acpi_handle get_shadow_handle; 9749 int output; 9750 9751 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSSS", &get_shadow_handle))) { 9752 lcdshadow_state = -ENODEV; 9753 return 0; 9754 } 9755 9756 if (!acpi_evalf(get_shadow_handle, &output, NULL, "dd", 0)) { 9757 lcdshadow_state = -EIO; 9758 return -EIO; 9759 } 9760 if (!(output & 0x10000)) { 9761 lcdshadow_state = -ENODEV; 9762 return 0; 9763 } 9764 lcdshadow_state = output & 0x1; 9765 9766 return 0; 9767 } 9768 9769 static void lcdshadow_resume(void) 9770 { 9771 if (lcdshadow_state >= 0) 9772 lcdshadow_on_off(lcdshadow_state); 9773 } 9774 9775 static int lcdshadow_read(struct seq_file *m) 9776 { 9777 if (lcdshadow_state < 0) { 9778 seq_puts(m, "status:\t\tnot supported\n"); 9779 } else { 9780 seq_printf(m, "status:\t\t%d\n", lcdshadow_state); 9781 seq_puts(m, "commands:\t0, 1\n"); 9782 } 9783 9784 return 0; 9785 } 9786 9787 static int lcdshadow_write(char *buf) 9788 { 9789 char *cmd; 9790 int res, state = -EINVAL; 9791 9792 if (lcdshadow_state < 0) 9793 return -ENODEV; 9794 9795 while ((cmd = strsep(&buf, ","))) { 9796 res = kstrtoint(cmd, 10, &state); 9797 if (res < 0) 9798 return res; 9799 } 9800 9801 if (state >= 2 || state < 0) 9802 return -EINVAL; 9803 9804 return lcdshadow_set(state); 9805 } 9806 9807 static struct ibm_struct lcdshadow_driver_data = { 9808 .name = "lcdshadow", 9809 .resume = lcdshadow_resume, 9810 .read = lcdshadow_read, 9811 .write = lcdshadow_write, 9812 }; 9813 9814 /************************************************************************* 9815 * Thinkpad sensor interfaces 9816 */ 9817 9818 #define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ 9819 #define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ 9820 #define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ 9821 #define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ 9822 9823 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 9824 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 9825 9826 #define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */ 9827 #define PALMSENSOR_ON_BIT 1 /* psensor status */ 9828 9829 static bool has_palmsensor; 9830 static bool has_lapsensor; 9831 static bool palm_state; 9832 static bool lap_state; 9833 static int dytc_version; 9834 9835 static int dytc_command(int command, int *output) 9836 { 9837 acpi_handle dytc_handle; 9838 9839 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 9840 /* Platform doesn't support DYTC */ 9841 return -ENODEV; 9842 } 9843 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 9844 return -EIO; 9845 return 0; 9846 } 9847 9848 static int dytc_get_version(void) 9849 { 9850 int err, output; 9851 9852 /* Check if we've been called before - and just return cached value */ 9853 if (dytc_version) 9854 return dytc_version; 9855 9856 /* Otherwise query DYTC and extract version information */ 9857 err = dytc_command(DYTC_CMD_QUERY, &output); 9858 /* 9859 * If support isn't available (ENODEV) then don't return an error 9860 * and don't create the sysfs group 9861 */ 9862 if (err == -ENODEV) 9863 return 0; 9864 /* For all other errors we can flag the failure */ 9865 if (err) 9866 return err; 9867 9868 /* Check DYTC is enabled and supports mode setting */ 9869 if (output & BIT(DYTC_QUERY_ENABLE_BIT)) 9870 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; 9871 9872 return 0; 9873 } 9874 9875 static int lapsensor_get(bool *present, bool *state) 9876 { 9877 int output, err; 9878 9879 *present = false; 9880 err = dytc_command(DYTC_CMD_GET, &output); 9881 if (err) 9882 return err; 9883 9884 *present = true; /*If we get his far, we have lapmode support*/ 9885 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 9886 return 0; 9887 } 9888 9889 static int palmsensor_get(bool *present, bool *state) 9890 { 9891 acpi_handle psensor_handle; 9892 int output; 9893 9894 *present = false; 9895 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle))) 9896 return -ENODEV; 9897 if (!acpi_evalf(psensor_handle, &output, NULL, "d")) 9898 return -EIO; 9899 9900 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false; 9901 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false; 9902 return 0; 9903 } 9904 9905 static void lapsensor_refresh(void) 9906 { 9907 bool state; 9908 int err; 9909 9910 if (has_lapsensor) { 9911 err = lapsensor_get(&has_lapsensor, &state); 9912 if (err) 9913 return; 9914 if (lap_state != state) { 9915 lap_state = state; 9916 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 9917 } 9918 } 9919 } 9920 9921 static void palmsensor_refresh(void) 9922 { 9923 bool state; 9924 int err; 9925 9926 if (has_palmsensor) { 9927 err = palmsensor_get(&has_palmsensor, &state); 9928 if (err) 9929 return; 9930 if (palm_state != state) { 9931 palm_state = state; 9932 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor"); 9933 } 9934 } 9935 } 9936 9937 static ssize_t dytc_lapmode_show(struct device *dev, 9938 struct device_attribute *attr, 9939 char *buf) 9940 { 9941 if (has_lapsensor) 9942 return sysfs_emit(buf, "%d\n", lap_state); 9943 return sysfs_emit(buf, "\n"); 9944 } 9945 static DEVICE_ATTR_RO(dytc_lapmode); 9946 9947 static ssize_t palmsensor_show(struct device *dev, 9948 struct device_attribute *attr, 9949 char *buf) 9950 { 9951 if (has_palmsensor) 9952 return sysfs_emit(buf, "%d\n", palm_state); 9953 return sysfs_emit(buf, "\n"); 9954 } 9955 static DEVICE_ATTR_RO(palmsensor); 9956 9957 static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm) 9958 { 9959 int palm_err, lap_err, err; 9960 9961 palm_err = palmsensor_get(&has_palmsensor, &palm_state); 9962 lap_err = lapsensor_get(&has_lapsensor, &lap_state); 9963 /* 9964 * If support isn't available (ENODEV) for both devices then quit, but 9965 * don't return an error. 9966 */ 9967 if ((palm_err == -ENODEV) && (lap_err == -ENODEV)) 9968 return 0; 9969 /* Otherwise, if there was an error return it */ 9970 if (palm_err && (palm_err != -ENODEV)) 9971 return palm_err; 9972 if (lap_err && (lap_err != -ENODEV)) 9973 return lap_err; 9974 9975 if (has_palmsensor) { 9976 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_palmsensor.attr); 9977 if (err) 9978 return err; 9979 } 9980 9981 /* Check if we know the DYTC version, if we don't then get it */ 9982 if (!dytc_version) { 9983 err = dytc_get_version(); 9984 if (err) 9985 return err; 9986 } 9987 /* 9988 * Platforms before DYTC version 5 claim to have a lap sensor, but it doesn't work, so we 9989 * ignore them 9990 */ 9991 if (has_lapsensor && (dytc_version >= 5)) { 9992 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_dytc_lapmode.attr); 9993 if (err) 9994 return err; 9995 } 9996 return 0; 9997 } 9998 9999 static void proxsensor_exit(void) 10000 { 10001 if (has_lapsensor) 10002 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_dytc_lapmode.attr); 10003 if (has_palmsensor) 10004 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_palmsensor.attr); 10005 } 10006 10007 static struct ibm_struct proxsensor_driver_data = { 10008 .name = "proximity-sensor", 10009 .exit = proxsensor_exit, 10010 }; 10011 10012 /************************************************************************* 10013 * DYTC Platform Profile interface 10014 */ 10015 10016 #define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ 10017 #define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */ 10018 #define DYTC_CMD_RESET 0x1ff /* To reset back to default */ 10019 10020 #define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ 10021 #define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ 10022 10023 #define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ 10024 #define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ 10025 #define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ 10026 10027 #define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ 10028 #define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ 10029 #define DYTC_FUNCTION_MMC 11 /* Function = 11, desk mode */ 10030 10031 #define DYTC_MODE_PERFORM 2 /* High power mode aka performance */ 10032 #define DYTC_MODE_LOWPOWER 3 /* Low power mode */ 10033 #define DYTC_MODE_BALANCE 0xF /* Default mode aka balanced */ 10034 #define DYTC_MODE_MMC_BALANCE 0 /* Default mode from MMC_GET, aka balanced */ 10035 10036 #define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */ 10037 #define DYTC_ERR_SUCCESS 1 /* CMD completed successful */ 10038 10039 #define DYTC_SET_COMMAND(function, mode, on) \ 10040 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ 10041 (mode) << DYTC_SET_MODE_BIT | \ 10042 (on) << DYTC_SET_VALID_BIT) 10043 10044 #define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 0) 10045 10046 #define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 1) 10047 10048 static bool dytc_profile_available; 10049 static enum platform_profile_option dytc_current_profile; 10050 static atomic_t dytc_ignore_event = ATOMIC_INIT(0); 10051 static DEFINE_MUTEX(dytc_mutex); 10052 static bool dytc_mmc_get_available; 10053 10054 static int convert_dytc_to_profile(int dytcmode, enum platform_profile_option *profile) 10055 { 10056 switch (dytcmode) { 10057 case DYTC_MODE_LOWPOWER: 10058 *profile = PLATFORM_PROFILE_LOW_POWER; 10059 break; 10060 case DYTC_MODE_BALANCE: 10061 case DYTC_MODE_MMC_BALANCE: 10062 *profile = PLATFORM_PROFILE_BALANCED; 10063 break; 10064 case DYTC_MODE_PERFORM: 10065 *profile = PLATFORM_PROFILE_PERFORMANCE; 10066 break; 10067 default: /* Unknown mode */ 10068 return -EINVAL; 10069 } 10070 return 0; 10071 } 10072 10073 static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) 10074 { 10075 switch (profile) { 10076 case PLATFORM_PROFILE_LOW_POWER: 10077 *perfmode = DYTC_MODE_LOWPOWER; 10078 break; 10079 case PLATFORM_PROFILE_BALANCED: 10080 *perfmode = DYTC_MODE_BALANCE; 10081 break; 10082 case PLATFORM_PROFILE_PERFORMANCE: 10083 *perfmode = DYTC_MODE_PERFORM; 10084 break; 10085 default: /* Unknown profile */ 10086 return -EOPNOTSUPP; 10087 } 10088 return 0; 10089 } 10090 10091 /* 10092 * dytc_profile_get: Function to register with platform_profile 10093 * handler. Returns current platform profile. 10094 */ 10095 static int dytc_profile_get(struct platform_profile_handler *pprof, 10096 enum platform_profile_option *profile) 10097 { 10098 *profile = dytc_current_profile; 10099 return 0; 10100 } 10101 10102 /* 10103 * Helper function - check if we are in CQL mode and if we are 10104 * - disable CQL, 10105 * - run the command 10106 * - enable CQL 10107 * If not in CQL mode, just run the command 10108 */ 10109 static int dytc_cql_command(int command, int *output) 10110 { 10111 int err, cmd_err, dummy; 10112 int cur_funcmode; 10113 10114 /* Determine if we are in CQL mode. This alters the commands we do */ 10115 err = dytc_command(DYTC_CMD_GET, output); 10116 if (err) 10117 return err; 10118 10119 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10120 /* Check if we're OK to return immediately */ 10121 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) 10122 return 0; 10123 10124 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10125 atomic_inc(&dytc_ignore_event); 10126 err = dytc_command(DYTC_DISABLE_CQL, &dummy); 10127 if (err) 10128 return err; 10129 } 10130 10131 cmd_err = dytc_command(command, output); 10132 /* Check return condition after we've restored CQL state */ 10133 10134 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10135 err = dytc_command(DYTC_ENABLE_CQL, &dummy); 10136 if (err) 10137 return err; 10138 } 10139 return cmd_err; 10140 } 10141 10142 /* 10143 * dytc_profile_set: Function to register with platform_profile 10144 * handler. Sets current platform profile. 10145 */ 10146 static int dytc_profile_set(struct platform_profile_handler *pprof, 10147 enum platform_profile_option profile) 10148 { 10149 int output; 10150 int err; 10151 10152 if (!dytc_profile_available) 10153 return -ENODEV; 10154 10155 err = mutex_lock_interruptible(&dytc_mutex); 10156 if (err) 10157 return err; 10158 10159 if (profile == PLATFORM_PROFILE_BALANCED) { 10160 /* 10161 * To get back to balanced mode we need to issue a reset command. 10162 * Note we still need to disable CQL mode before hand and re-enable 10163 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays 10164 * stuck at 0 for aprox. 30 minutes. 10165 */ 10166 err = dytc_cql_command(DYTC_CMD_RESET, &output); 10167 if (err) 10168 goto unlock; 10169 } else { 10170 int perfmode; 10171 10172 err = convert_profile_to_dytc(profile, &perfmode); 10173 if (err) 10174 goto unlock; 10175 10176 /* Determine if we are in CQL mode. This alters the commands we do */ 10177 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), &output); 10178 if (err) 10179 goto unlock; 10180 } 10181 /* Success - update current profile */ 10182 dytc_current_profile = profile; 10183 unlock: 10184 mutex_unlock(&dytc_mutex); 10185 return err; 10186 } 10187 10188 static void dytc_profile_refresh(void) 10189 { 10190 enum platform_profile_option profile; 10191 int output, err; 10192 int perfmode; 10193 10194 mutex_lock(&dytc_mutex); 10195 if (dytc_mmc_get_available) 10196 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10197 else 10198 err = dytc_cql_command(DYTC_CMD_GET, &output); 10199 mutex_unlock(&dytc_mutex); 10200 if (err) 10201 return; 10202 10203 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; 10204 convert_dytc_to_profile(perfmode, &profile); 10205 if (profile != dytc_current_profile) { 10206 dytc_current_profile = profile; 10207 platform_profile_notify(); 10208 } 10209 } 10210 10211 static struct platform_profile_handler dytc_profile = { 10212 .profile_get = dytc_profile_get, 10213 .profile_set = dytc_profile_set, 10214 }; 10215 10216 static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) 10217 { 10218 int err, output; 10219 10220 /* Setup supported modes */ 10221 set_bit(PLATFORM_PROFILE_LOW_POWER, dytc_profile.choices); 10222 set_bit(PLATFORM_PROFILE_BALANCED, dytc_profile.choices); 10223 set_bit(PLATFORM_PROFILE_PERFORMANCE, dytc_profile.choices); 10224 10225 dytc_profile_available = false; 10226 err = dytc_command(DYTC_CMD_QUERY, &output); 10227 /* 10228 * If support isn't available (ENODEV) then don't return an error 10229 * and don't create the sysfs group 10230 */ 10231 if (err == -ENODEV) 10232 return 0; 10233 /* For all other errors we can flag the failure */ 10234 if (err) 10235 return err; 10236 10237 /* Check if we know the DYTC version, if we don't then get it */ 10238 if (!dytc_version) { 10239 err = dytc_get_version(); 10240 if (err) 10241 return err; 10242 } 10243 /* Check DYTC is enabled and supports mode setting */ 10244 if (dytc_version >= 5) { 10245 dbg_printk(TPACPI_DBG_INIT, 10246 "DYTC version %d: thermal mode available\n", dytc_version); 10247 /* 10248 * Check if MMC_GET functionality available 10249 * Version > 6 and return success from MMC_GET command 10250 */ 10251 dytc_mmc_get_available = false; 10252 if (dytc_version >= 6) { 10253 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10254 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS)) 10255 dytc_mmc_get_available = true; 10256 } 10257 /* Create platform_profile structure and register */ 10258 err = platform_profile_register(&dytc_profile); 10259 /* 10260 * If for some reason platform_profiles aren't enabled 10261 * don't quit terminally. 10262 */ 10263 if (err) 10264 return 0; 10265 10266 dytc_profile_available = true; 10267 /* Ensure initial values are correct */ 10268 dytc_profile_refresh(); 10269 } 10270 return 0; 10271 } 10272 10273 static void dytc_profile_exit(void) 10274 { 10275 if (dytc_profile_available) { 10276 dytc_profile_available = false; 10277 platform_profile_remove(); 10278 } 10279 } 10280 10281 static struct ibm_struct dytc_profile_driver_data = { 10282 .name = "dytc-profile", 10283 .exit = dytc_profile_exit, 10284 }; 10285 10286 /************************************************************************* 10287 * Keyboard language interface 10288 */ 10289 10290 struct keyboard_lang_data { 10291 const char *lang_str; 10292 int lang_code; 10293 }; 10294 10295 static const struct keyboard_lang_data keyboard_lang_data[] = { 10296 {"be", 0x080c}, 10297 {"cz", 0x0405}, 10298 {"da", 0x0406}, 10299 {"de", 0x0c07}, 10300 {"en", 0x0000}, 10301 {"es", 0x2c0a}, 10302 {"et", 0x0425}, 10303 {"fr", 0x040c}, 10304 {"fr-ch", 0x100c}, 10305 {"hu", 0x040e}, 10306 {"it", 0x0410}, 10307 {"jp", 0x0411}, 10308 {"nl", 0x0413}, 10309 {"nn", 0x0414}, 10310 {"pl", 0x0415}, 10311 {"pt", 0x0816}, 10312 {"sl", 0x041b}, 10313 {"sv", 0x081d}, 10314 {"tr", 0x041f}, 10315 }; 10316 10317 static int set_keyboard_lang_command(int command) 10318 { 10319 acpi_handle sskl_handle; 10320 int output; 10321 10322 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) { 10323 /* Platform doesn't support SSKL */ 10324 return -ENODEV; 10325 } 10326 10327 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command)) 10328 return -EIO; 10329 10330 return 0; 10331 } 10332 10333 static int get_keyboard_lang(int *output) 10334 { 10335 acpi_handle gskl_handle; 10336 int kbd_lang; 10337 10338 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) { 10339 /* Platform doesn't support GSKL */ 10340 return -ENODEV; 10341 } 10342 10343 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000)) 10344 return -EIO; 10345 10346 /* 10347 * METHOD_ERR gets returned on devices where there are no special (e.g. '=', 10348 * '(' and ')') keys which use layout dependent key-press emulation. 10349 */ 10350 if (kbd_lang & METHOD_ERR) 10351 return -ENODEV; 10352 10353 *output = kbd_lang; 10354 10355 return 0; 10356 } 10357 10358 /* sysfs keyboard language entry */ 10359 static ssize_t keyboard_lang_show(struct device *dev, 10360 struct device_attribute *attr, 10361 char *buf) 10362 { 10363 int output, err, i, len = 0; 10364 10365 err = get_keyboard_lang(&output); 10366 if (err) 10367 return err; 10368 10369 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10370 if (i) 10371 len += sysfs_emit_at(buf, len, "%s", " "); 10372 10373 if (output == keyboard_lang_data[i].lang_code) { 10374 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str); 10375 } else { 10376 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str); 10377 } 10378 } 10379 len += sysfs_emit_at(buf, len, "\n"); 10380 10381 return len; 10382 } 10383 10384 static ssize_t keyboard_lang_store(struct device *dev, 10385 struct device_attribute *attr, 10386 const char *buf, size_t count) 10387 { 10388 int err, i; 10389 bool lang_found = false; 10390 int lang_code = 0; 10391 10392 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10393 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) { 10394 lang_code = keyboard_lang_data[i].lang_code; 10395 lang_found = true; 10396 break; 10397 } 10398 } 10399 10400 if (lang_found) { 10401 lang_code = lang_code | 1 << 24; 10402 10403 /* Set language code */ 10404 err = set_keyboard_lang_command(lang_code); 10405 if (err) 10406 return err; 10407 } else { 10408 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n"); 10409 return -EINVAL; 10410 } 10411 10412 tpacpi_disclose_usertask(attr->attr.name, 10413 "keyboard language is set to %s\n", buf); 10414 10415 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang"); 10416 10417 return count; 10418 } 10419 static DEVICE_ATTR_RW(keyboard_lang); 10420 10421 static struct attribute *kbdlang_attributes[] = { 10422 &dev_attr_keyboard_lang.attr, 10423 NULL 10424 }; 10425 10426 static const struct attribute_group kbdlang_attr_group = { 10427 .attrs = kbdlang_attributes, 10428 }; 10429 10430 static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm) 10431 { 10432 int err, output; 10433 10434 err = get_keyboard_lang(&output); 10435 /* 10436 * If support isn't available (ENODEV) then don't return an error 10437 * just don't create the sysfs group. 10438 */ 10439 if (err == -ENODEV) 10440 return 0; 10441 10442 if (err) 10443 return err; 10444 10445 /* Platform supports this feature - create the sysfs file */ 10446 return sysfs_create_group(&tpacpi_pdev->dev.kobj, &kbdlang_attr_group); 10447 } 10448 10449 static void kbdlang_exit(void) 10450 { 10451 sysfs_remove_group(&tpacpi_pdev->dev.kobj, &kbdlang_attr_group); 10452 } 10453 10454 static struct ibm_struct kbdlang_driver_data = { 10455 .name = "kbdlang", 10456 .exit = kbdlang_exit, 10457 }; 10458 10459 /************************************************************************* 10460 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN 10461 * and WLAN feature. 10462 */ 10463 #define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000 10464 #define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4) 10465 #define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8) 10466 static bool has_antennatype; 10467 static int wwan_antennatype; 10468 10469 static int dprc_command(int command, int *output) 10470 { 10471 acpi_handle dprc_handle; 10472 10473 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) { 10474 /* Platform doesn't support DPRC */ 10475 return -ENODEV; 10476 } 10477 10478 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command)) 10479 return -EIO; 10480 10481 /* 10482 * METHOD_ERR gets returned on devices where few commands are not supported 10483 * for example command to get WWAN Antenna type command is not supported on 10484 * some devices. 10485 */ 10486 if (*output & METHOD_ERR) 10487 return -ENODEV; 10488 10489 return 0; 10490 } 10491 10492 static int get_wwan_antenna(int *wwan_antennatype) 10493 { 10494 int output, err; 10495 10496 /* Get current Antenna type */ 10497 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output); 10498 if (err) 10499 return err; 10500 10501 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT) 10502 *wwan_antennatype = 1; 10503 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT) 10504 *wwan_antennatype = 2; 10505 else 10506 return -ENODEV; 10507 10508 return 0; 10509 } 10510 10511 /* sysfs wwan antenna type entry */ 10512 static ssize_t wwan_antenna_type_show(struct device *dev, 10513 struct device_attribute *attr, 10514 char *buf) 10515 { 10516 switch (wwan_antennatype) { 10517 case 1: 10518 return sysfs_emit(buf, "type a\n"); 10519 case 2: 10520 return sysfs_emit(buf, "type b\n"); 10521 default: 10522 return -ENODATA; 10523 } 10524 } 10525 static DEVICE_ATTR_RO(wwan_antenna_type); 10526 10527 static int tpacpi_dprc_init(struct ibm_init_struct *iibm) 10528 { 10529 int wwanantenna_err, err; 10530 10531 wwanantenna_err = get_wwan_antenna(&wwan_antennatype); 10532 /* 10533 * If support isn't available (ENODEV) then quit, but don't 10534 * return an error. 10535 */ 10536 if (wwanantenna_err == -ENODEV) 10537 return 0; 10538 10539 /* if there was an error return it */ 10540 if (wwanantenna_err && (wwanantenna_err != -ENODEV)) 10541 return wwanantenna_err; 10542 else if (!wwanantenna_err) 10543 has_antennatype = true; 10544 10545 if (has_antennatype) { 10546 err = sysfs_create_file(&tpacpi_pdev->dev.kobj, &dev_attr_wwan_antenna_type.attr); 10547 if (err) 10548 return err; 10549 } 10550 return 0; 10551 } 10552 10553 static void dprc_exit(void) 10554 { 10555 if (has_antennatype) 10556 sysfs_remove_file(&tpacpi_pdev->dev.kobj, &dev_attr_wwan_antenna_type.attr); 10557 } 10558 10559 static struct ibm_struct dprc_driver_data = { 10560 .name = "dprc", 10561 .exit = dprc_exit, 10562 }; 10563 10564 /**************************************************************************** 10565 **************************************************************************** 10566 * 10567 * Infrastructure 10568 * 10569 **************************************************************************** 10570 ****************************************************************************/ 10571 10572 /* 10573 * HKEY event callout for other subdrivers go here 10574 * (yes, it is ugly, but it is quick, safe, and gets the job done 10575 */ 10576 static void tpacpi_driver_event(const unsigned int hkey_event) 10577 { 10578 if (ibm_backlight_device) { 10579 switch (hkey_event) { 10580 case TP_HKEY_EV_BRGHT_UP: 10581 case TP_HKEY_EV_BRGHT_DOWN: 10582 tpacpi_brightness_notify_change(); 10583 } 10584 } 10585 if (alsa_card) { 10586 switch (hkey_event) { 10587 case TP_HKEY_EV_VOL_UP: 10588 case TP_HKEY_EV_VOL_DOWN: 10589 case TP_HKEY_EV_VOL_MUTE: 10590 volume_alsa_notify_change(); 10591 } 10592 } 10593 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 10594 enum led_brightness brightness; 10595 10596 mutex_lock(&kbdlight_mutex); 10597 10598 /* 10599 * Check the brightness actually changed, setting the brightness 10600 * through kbdlight_set_level() also triggers this event. 10601 */ 10602 brightness = kbdlight_sysfs_get(NULL); 10603 if (kbdlight_brightness != brightness) { 10604 kbdlight_brightness = brightness; 10605 led_classdev_notify_brightness_hw_changed( 10606 &tpacpi_led_kbdlight.led_classdev, brightness); 10607 } 10608 10609 mutex_unlock(&kbdlight_mutex); 10610 } 10611 10612 if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) { 10613 lapsensor_refresh(); 10614 /* If we are already accessing DYTC then skip dytc update */ 10615 if (!atomic_add_unless(&dytc_ignore_event, -1, 0)) 10616 dytc_profile_refresh(); 10617 } 10618 } 10619 10620 static void hotkey_driver_event(const unsigned int scancode) 10621 { 10622 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 10623 } 10624 10625 /* --------------------------------------------------------------------- */ 10626 10627 /* /proc support */ 10628 static struct proc_dir_entry *proc_dir; 10629 10630 /* 10631 * Module and infrastructure proble, init and exit handling 10632 */ 10633 10634 static bool force_load; 10635 10636 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 10637 static const char * __init str_supported(int is_supported) 10638 { 10639 static char text_unsupported[] __initdata = "not supported"; 10640 10641 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 10642 } 10643 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 10644 10645 static void ibm_exit(struct ibm_struct *ibm) 10646 { 10647 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 10648 10649 list_del_init(&ibm->all_drivers); 10650 10651 if (ibm->flags.acpi_notify_installed) { 10652 dbg_printk(TPACPI_DBG_EXIT, 10653 "%s: acpi_remove_notify_handler\n", ibm->name); 10654 BUG_ON(!ibm->acpi); 10655 acpi_remove_notify_handler(*ibm->acpi->handle, 10656 ibm->acpi->type, 10657 dispatch_acpi_notify); 10658 ibm->flags.acpi_notify_installed = 0; 10659 } 10660 10661 if (ibm->flags.proc_created) { 10662 dbg_printk(TPACPI_DBG_EXIT, 10663 "%s: remove_proc_entry\n", ibm->name); 10664 remove_proc_entry(ibm->name, proc_dir); 10665 ibm->flags.proc_created = 0; 10666 } 10667 10668 if (ibm->flags.acpi_driver_registered) { 10669 dbg_printk(TPACPI_DBG_EXIT, 10670 "%s: acpi_bus_unregister_driver\n", ibm->name); 10671 BUG_ON(!ibm->acpi); 10672 acpi_bus_unregister_driver(ibm->acpi->driver); 10673 kfree(ibm->acpi->driver); 10674 ibm->acpi->driver = NULL; 10675 ibm->flags.acpi_driver_registered = 0; 10676 } 10677 10678 if (ibm->flags.init_called && ibm->exit) { 10679 ibm->exit(); 10680 ibm->flags.init_called = 0; 10681 } 10682 10683 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 10684 } 10685 10686 static int __init ibm_init(struct ibm_init_struct *iibm) 10687 { 10688 int ret; 10689 struct ibm_struct *ibm = iibm->data; 10690 struct proc_dir_entry *entry; 10691 10692 BUG_ON(ibm == NULL); 10693 10694 INIT_LIST_HEAD(&ibm->all_drivers); 10695 10696 if (ibm->flags.experimental && !experimental) 10697 return 0; 10698 10699 dbg_printk(TPACPI_DBG_INIT, 10700 "probing for %s\n", ibm->name); 10701 10702 if (iibm->init) { 10703 ret = iibm->init(iibm); 10704 if (ret > 0) 10705 return 0; /* probe failed */ 10706 if (ret) 10707 return ret; 10708 10709 ibm->flags.init_called = 1; 10710 } 10711 10712 if (ibm->acpi) { 10713 if (ibm->acpi->hid) { 10714 ret = register_tpacpi_subdriver(ibm); 10715 if (ret) 10716 goto err_out; 10717 } 10718 10719 if (ibm->acpi->notify) { 10720 ret = setup_acpi_notify(ibm); 10721 if (ret == -ENODEV) { 10722 pr_notice("disabling subdriver %s\n", 10723 ibm->name); 10724 ret = 0; 10725 goto err_out; 10726 } 10727 if (ret < 0) 10728 goto err_out; 10729 } 10730 } 10731 10732 dbg_printk(TPACPI_DBG_INIT, 10733 "%s installed\n", ibm->name); 10734 10735 if (ibm->read) { 10736 umode_t mode = iibm->base_procfs_mode; 10737 10738 if (!mode) 10739 mode = S_IRUGO; 10740 if (ibm->write) 10741 mode |= S_IWUSR; 10742 entry = proc_create_data(ibm->name, mode, proc_dir, 10743 &dispatch_proc_ops, ibm); 10744 if (!entry) { 10745 pr_err("unable to create proc entry %s\n", ibm->name); 10746 ret = -ENODEV; 10747 goto err_out; 10748 } 10749 ibm->flags.proc_created = 1; 10750 } 10751 10752 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 10753 10754 return 0; 10755 10756 err_out: 10757 dbg_printk(TPACPI_DBG_INIT, 10758 "%s: at error exit path with result %d\n", 10759 ibm->name, ret); 10760 10761 ibm_exit(ibm); 10762 return (ret < 0) ? ret : 0; 10763 } 10764 10765 /* Probing */ 10766 10767 static char __init tpacpi_parse_fw_id(const char * const s, 10768 u32 *model, u16 *release) 10769 { 10770 int i; 10771 10772 if (!s || strlen(s) < 8) 10773 goto invalid; 10774 10775 for (i = 0; i < 8; i++) 10776 if (!((s[i] >= '0' && s[i] <= '9') || 10777 (s[i] >= 'A' && s[i] <= 'Z'))) 10778 goto invalid; 10779 10780 /* 10781 * Most models: xxyTkkWW (#.##c) 10782 * Ancient 570/600 and -SL lacks (#.##c) 10783 */ 10784 if (s[3] == 'T' || s[3] == 'N') { 10785 *model = TPID(s[0], s[1]); 10786 *release = TPVER(s[4], s[5]); 10787 return s[2]; 10788 10789 /* New models: xxxyTkkW (#.##c); T550 and some others */ 10790 } else if (s[4] == 'T' || s[4] == 'N') { 10791 *model = TPID3(s[0], s[1], s[2]); 10792 *release = TPVER(s[5], s[6]); 10793 return s[3]; 10794 } 10795 10796 invalid: 10797 return '\0'; 10798 } 10799 10800 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 10801 { 10802 char *ec_fw_string = (char *) private; 10803 const char *dmi_data = (const char *)dm; 10804 /* 10805 * ThinkPad Embedded Controller Program Table on newer models 10806 * 10807 * Offset | Name | Width | Description 10808 * ---------------------------------------------------- 10809 * 0x00 | Type | BYTE | 0x8C 10810 * 0x01 | Length | BYTE | 10811 * 0x02 | Handle | WORD | Varies 10812 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 10813 * 0x0A | OEM struct offset | BYTE | 0x0B 10814 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 10815 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 10816 * 0x0D | ECP version ID | STR ID | 10817 * 0x0E | ECP release date | STR ID | 10818 */ 10819 10820 /* Return if data structure not match */ 10821 if (dm->type != 140 || dm->length < 0x0F || 10822 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 10823 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 10824 dmi_data[0x0C] != 0x01) 10825 return; 10826 10827 /* fwstr is the first 8byte string */ 10828 strncpy(ec_fw_string, dmi_data + 0x0F, 8); 10829 } 10830 10831 /* returns 0 - probe ok, or < 0 - probe error. 10832 * Probe ok doesn't mean thinkpad found. 10833 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 10834 static int __must_check __init get_thinkpad_model_data( 10835 struct thinkpad_id_data *tp) 10836 { 10837 const struct dmi_device *dev = NULL; 10838 char ec_fw_string[18] = {0}; 10839 char const *s; 10840 char t; 10841 10842 if (!tp) 10843 return -EINVAL; 10844 10845 memset(tp, 0, sizeof(*tp)); 10846 10847 if (dmi_name_in_vendors("IBM")) 10848 tp->vendor = PCI_VENDOR_ID_IBM; 10849 else if (dmi_name_in_vendors("LENOVO")) 10850 tp->vendor = PCI_VENDOR_ID_LENOVO; 10851 else 10852 return 0; 10853 10854 s = dmi_get_system_info(DMI_BIOS_VERSION); 10855 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 10856 if (s && !tp->bios_version_str) 10857 return -ENOMEM; 10858 10859 /* Really ancient ThinkPad 240X will fail this, which is fine */ 10860 t = tpacpi_parse_fw_id(tp->bios_version_str, 10861 &tp->bios_model, &tp->bios_release); 10862 if (t != 'E' && t != 'C') 10863 return 0; 10864 10865 /* 10866 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 10867 * X32 or newer, all Z series; Some models must have an 10868 * up-to-date BIOS or they will not be detected. 10869 * 10870 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 10871 */ 10872 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 10873 if (sscanf(dev->name, 10874 "IBM ThinkPad Embedded Controller -[%17c", 10875 ec_fw_string) == 1) { 10876 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 10877 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 10878 break; 10879 } 10880 } 10881 10882 /* Newer ThinkPads have different EC program info table */ 10883 if (!ec_fw_string[0]) 10884 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 10885 10886 if (ec_fw_string[0]) { 10887 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 10888 if (!tp->ec_version_str) 10889 return -ENOMEM; 10890 10891 t = tpacpi_parse_fw_id(ec_fw_string, 10892 &tp->ec_model, &tp->ec_release); 10893 if (t != 'H') { 10894 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 10895 ec_fw_string); 10896 pr_notice("please report this to %s\n", TPACPI_MAIL); 10897 } 10898 } 10899 10900 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 10901 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 10902 tp->model_str = kstrdup(s, GFP_KERNEL); 10903 if (!tp->model_str) 10904 return -ENOMEM; 10905 } else { 10906 s = dmi_get_system_info(DMI_BIOS_VENDOR); 10907 if (s && !(strncasecmp(s, "Lenovo", 6))) { 10908 tp->model_str = kstrdup(s, GFP_KERNEL); 10909 if (!tp->model_str) 10910 return -ENOMEM; 10911 } 10912 } 10913 10914 s = dmi_get_system_info(DMI_PRODUCT_NAME); 10915 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 10916 if (s && !tp->nummodel_str) 10917 return -ENOMEM; 10918 10919 return 0; 10920 } 10921 10922 static int __init probe_for_thinkpad(void) 10923 { 10924 int is_thinkpad; 10925 10926 if (acpi_disabled) 10927 return -ENODEV; 10928 10929 /* It would be dangerous to run the driver in this case */ 10930 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 10931 return -ENODEV; 10932 10933 /* 10934 * Non-ancient models have better DMI tagging, but very old models 10935 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 10936 */ 10937 is_thinkpad = (thinkpad_id.model_str != NULL) || 10938 (thinkpad_id.ec_model != 0) || 10939 tpacpi_is_fw_known(); 10940 10941 /* The EC handler is required */ 10942 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 10943 if (!ec_handle) { 10944 if (is_thinkpad) 10945 pr_err("Not yet supported ThinkPad detected!\n"); 10946 return -ENODEV; 10947 } 10948 10949 if (!is_thinkpad && !force_load) 10950 return -ENODEV; 10951 10952 return 0; 10953 } 10954 10955 static void __init thinkpad_acpi_init_banner(void) 10956 { 10957 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 10958 pr_info("%s\n", TPACPI_URL); 10959 10960 pr_info("ThinkPad BIOS %s, EC %s\n", 10961 (thinkpad_id.bios_version_str) ? 10962 thinkpad_id.bios_version_str : "unknown", 10963 (thinkpad_id.ec_version_str) ? 10964 thinkpad_id.ec_version_str : "unknown"); 10965 10966 BUG_ON(!thinkpad_id.vendor); 10967 10968 if (thinkpad_id.model_str) 10969 pr_info("%s %s, model %s\n", 10970 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 10971 "IBM" : ((thinkpad_id.vendor == 10972 PCI_VENDOR_ID_LENOVO) ? 10973 "Lenovo" : "Unknown vendor"), 10974 thinkpad_id.model_str, 10975 (thinkpad_id.nummodel_str) ? 10976 thinkpad_id.nummodel_str : "unknown"); 10977 } 10978 10979 /* Module init, exit, parameters */ 10980 10981 static struct ibm_init_struct ibms_init[] __initdata = { 10982 { 10983 .data = &thinkpad_acpi_driver_data, 10984 }, 10985 { 10986 .init = hotkey_init, 10987 .data = &hotkey_driver_data, 10988 }, 10989 { 10990 .init = bluetooth_init, 10991 .data = &bluetooth_driver_data, 10992 }, 10993 { 10994 .init = wan_init, 10995 .data = &wan_driver_data, 10996 }, 10997 { 10998 .init = uwb_init, 10999 .data = &uwb_driver_data, 11000 }, 11001 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 11002 { 11003 .init = video_init, 11004 .base_procfs_mode = S_IRUSR, 11005 .data = &video_driver_data, 11006 }, 11007 #endif 11008 { 11009 .init = kbdlight_init, 11010 .data = &kbdlight_driver_data, 11011 }, 11012 { 11013 .init = light_init, 11014 .data = &light_driver_data, 11015 }, 11016 { 11017 .init = cmos_init, 11018 .data = &cmos_driver_data, 11019 }, 11020 { 11021 .init = led_init, 11022 .data = &led_driver_data, 11023 }, 11024 { 11025 .init = beep_init, 11026 .data = &beep_driver_data, 11027 }, 11028 { 11029 .init = thermal_init, 11030 .data = &thermal_driver_data, 11031 }, 11032 { 11033 .init = brightness_init, 11034 .data = &brightness_driver_data, 11035 }, 11036 { 11037 .init = volume_init, 11038 .data = &volume_driver_data, 11039 }, 11040 { 11041 .init = fan_init, 11042 .data = &fan_driver_data, 11043 }, 11044 { 11045 .init = mute_led_init, 11046 .data = &mute_led_driver_data, 11047 }, 11048 { 11049 .init = tpacpi_battery_init, 11050 .data = &battery_driver_data, 11051 }, 11052 { 11053 .init = tpacpi_lcdshadow_init, 11054 .data = &lcdshadow_driver_data, 11055 }, 11056 { 11057 .init = tpacpi_proxsensor_init, 11058 .data = &proxsensor_driver_data, 11059 }, 11060 { 11061 .init = tpacpi_dytc_profile_init, 11062 .data = &dytc_profile_driver_data, 11063 }, 11064 { 11065 .init = tpacpi_kbdlang_init, 11066 .data = &kbdlang_driver_data, 11067 }, 11068 { 11069 .init = tpacpi_dprc_init, 11070 .data = &dprc_driver_data, 11071 }, 11072 }; 11073 11074 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 11075 { 11076 unsigned int i; 11077 struct ibm_struct *ibm; 11078 11079 if (!kp || !kp->name || !val) 11080 return -EINVAL; 11081 11082 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11083 ibm = ibms_init[i].data; 11084 WARN_ON(ibm == NULL); 11085 11086 if (!ibm || !ibm->name) 11087 continue; 11088 11089 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 11090 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 11091 return -ENOSPC; 11092 strcpy(ibms_init[i].param, val); 11093 return 0; 11094 } 11095 } 11096 11097 return -EINVAL; 11098 } 11099 11100 module_param(experimental, int, 0444); 11101 MODULE_PARM_DESC(experimental, 11102 "Enables experimental features when non-zero"); 11103 11104 module_param_named(debug, dbg_level, uint, 0); 11105 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 11106 11107 module_param(force_load, bool, 0444); 11108 MODULE_PARM_DESC(force_load, 11109 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 11110 11111 module_param_named(fan_control, fan_control_allowed, bool, 0444); 11112 MODULE_PARM_DESC(fan_control, 11113 "Enables setting fan parameters features when true"); 11114 11115 module_param_named(brightness_mode, brightness_mode, uint, 0444); 11116 MODULE_PARM_DESC(brightness_mode, 11117 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 11118 11119 module_param(brightness_enable, uint, 0444); 11120 MODULE_PARM_DESC(brightness_enable, 11121 "Enables backlight control when 1, disables when 0"); 11122 11123 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 11124 module_param_named(volume_mode, volume_mode, uint, 0444); 11125 MODULE_PARM_DESC(volume_mode, 11126 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 11127 11128 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 11129 MODULE_PARM_DESC(volume_capabilities, 11130 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 11131 11132 module_param_named(volume_control, volume_control_allowed, bool, 0444); 11133 MODULE_PARM_DESC(volume_control, 11134 "Enables software override for the console audio control when true"); 11135 11136 module_param_named(software_mute, software_mute_requested, bool, 0444); 11137 MODULE_PARM_DESC(software_mute, 11138 "Request full software mute control"); 11139 11140 /* ALSA module API parameters */ 11141 module_param_named(index, alsa_index, int, 0444); 11142 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 11143 module_param_named(id, alsa_id, charp, 0444); 11144 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 11145 module_param_named(enable, alsa_enable, bool, 0444); 11146 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 11147 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 11148 11149 /* The module parameter can't be read back, that's why 0 is used here */ 11150 #define TPACPI_PARAM(feature) \ 11151 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 11152 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 11153 11154 TPACPI_PARAM(hotkey); 11155 TPACPI_PARAM(bluetooth); 11156 TPACPI_PARAM(video); 11157 TPACPI_PARAM(light); 11158 TPACPI_PARAM(cmos); 11159 TPACPI_PARAM(led); 11160 TPACPI_PARAM(beep); 11161 TPACPI_PARAM(brightness); 11162 TPACPI_PARAM(volume); 11163 TPACPI_PARAM(fan); 11164 11165 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11166 module_param(dbg_wlswemul, uint, 0444); 11167 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 11168 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 11169 MODULE_PARM_DESC(wlsw_state, 11170 "Initial state of the emulated WLSW switch"); 11171 11172 module_param(dbg_bluetoothemul, uint, 0444); 11173 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 11174 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 11175 MODULE_PARM_DESC(bluetooth_state, 11176 "Initial state of the emulated bluetooth switch"); 11177 11178 module_param(dbg_wwanemul, uint, 0444); 11179 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 11180 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 11181 MODULE_PARM_DESC(wwan_state, 11182 "Initial state of the emulated WWAN switch"); 11183 11184 module_param(dbg_uwbemul, uint, 0444); 11185 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 11186 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 11187 MODULE_PARM_DESC(uwb_state, 11188 "Initial state of the emulated UWB switch"); 11189 #endif 11190 11191 static void thinkpad_acpi_module_exit(void) 11192 { 11193 struct ibm_struct *ibm, *itmp; 11194 11195 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 11196 11197 list_for_each_entry_safe_reverse(ibm, itmp, 11198 &tpacpi_all_drivers, 11199 all_drivers) { 11200 ibm_exit(ibm); 11201 } 11202 11203 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 11204 11205 if (tpacpi_inputdev) { 11206 if (tp_features.input_device_registered) 11207 input_unregister_device(tpacpi_inputdev); 11208 else 11209 input_free_device(tpacpi_inputdev); 11210 kfree(hotkey_keycode_map); 11211 } 11212 11213 if (tpacpi_hwmon) 11214 hwmon_device_unregister(tpacpi_hwmon); 11215 11216 if (tpacpi_sensors_pdev) 11217 platform_device_unregister(tpacpi_sensors_pdev); 11218 if (tpacpi_pdev) 11219 platform_device_unregister(tpacpi_pdev); 11220 11221 if (tp_features.sensors_pdrv_attrs_registered) 11222 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); 11223 if (tp_features.platform_drv_attrs_registered) 11224 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); 11225 11226 if (tp_features.sensors_pdrv_registered) 11227 platform_driver_unregister(&tpacpi_hwmon_pdriver); 11228 11229 if (tp_features.platform_drv_registered) 11230 platform_driver_unregister(&tpacpi_pdriver); 11231 11232 if (proc_dir) 11233 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 11234 11235 if (tpacpi_wq) 11236 destroy_workqueue(tpacpi_wq); 11237 11238 kfree(thinkpad_id.bios_version_str); 11239 kfree(thinkpad_id.ec_version_str); 11240 kfree(thinkpad_id.model_str); 11241 kfree(thinkpad_id.nummodel_str); 11242 } 11243 11244 11245 static int __init thinkpad_acpi_module_init(void) 11246 { 11247 int ret, i; 11248 11249 tpacpi_lifecycle = TPACPI_LIFE_INIT; 11250 11251 /* Driver-level probe */ 11252 11253 ret = get_thinkpad_model_data(&thinkpad_id); 11254 if (ret) { 11255 pr_err("unable to get DMI data: %d\n", ret); 11256 thinkpad_acpi_module_exit(); 11257 return ret; 11258 } 11259 ret = probe_for_thinkpad(); 11260 if (ret) { 11261 thinkpad_acpi_module_exit(); 11262 return ret; 11263 } 11264 11265 /* Driver initialization */ 11266 11267 thinkpad_acpi_init_banner(); 11268 tpacpi_check_outdated_fw(); 11269 11270 TPACPI_ACPIHANDLE_INIT(ecrd); 11271 TPACPI_ACPIHANDLE_INIT(ecwr); 11272 11273 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 11274 if (!tpacpi_wq) { 11275 thinkpad_acpi_module_exit(); 11276 return -ENOMEM; 11277 } 11278 11279 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 11280 if (!proc_dir) { 11281 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 11282 thinkpad_acpi_module_exit(); 11283 return -ENODEV; 11284 } 11285 11286 ret = platform_driver_register(&tpacpi_pdriver); 11287 if (ret) { 11288 pr_err("unable to register main platform driver\n"); 11289 thinkpad_acpi_module_exit(); 11290 return ret; 11291 } 11292 tp_features.platform_drv_registered = 1; 11293 11294 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 11295 if (ret) { 11296 pr_err("unable to register hwmon platform driver\n"); 11297 thinkpad_acpi_module_exit(); 11298 return ret; 11299 } 11300 tp_features.sensors_pdrv_registered = 1; 11301 11302 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); 11303 if (!ret) { 11304 tp_features.platform_drv_attrs_registered = 1; 11305 ret = tpacpi_create_driver_attributes( 11306 &tpacpi_hwmon_pdriver.driver); 11307 } 11308 if (ret) { 11309 pr_err("unable to create sysfs driver attributes\n"); 11310 thinkpad_acpi_module_exit(); 11311 return ret; 11312 } 11313 tp_features.sensors_pdrv_attrs_registered = 1; 11314 11315 11316 /* Device initialization */ 11317 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 11318 NULL, 0); 11319 if (IS_ERR(tpacpi_pdev)) { 11320 ret = PTR_ERR(tpacpi_pdev); 11321 tpacpi_pdev = NULL; 11322 pr_err("unable to register platform device\n"); 11323 thinkpad_acpi_module_exit(); 11324 return ret; 11325 } 11326 tpacpi_sensors_pdev = platform_device_register_simple( 11327 TPACPI_HWMON_DRVR_NAME, 11328 -1, NULL, 0); 11329 if (IS_ERR(tpacpi_sensors_pdev)) { 11330 ret = PTR_ERR(tpacpi_sensors_pdev); 11331 tpacpi_sensors_pdev = NULL; 11332 pr_err("unable to register hwmon platform device\n"); 11333 thinkpad_acpi_module_exit(); 11334 return ret; 11335 } 11336 tp_features.sensors_pdev_attrs_registered = 1; 11337 tpacpi_hwmon = hwmon_device_register_with_groups( 11338 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL); 11339 11340 if (IS_ERR(tpacpi_hwmon)) { 11341 ret = PTR_ERR(tpacpi_hwmon); 11342 tpacpi_hwmon = NULL; 11343 pr_err("unable to register hwmon device\n"); 11344 thinkpad_acpi_module_exit(); 11345 return ret; 11346 } 11347 mutex_init(&tpacpi_inputdev_send_mutex); 11348 tpacpi_inputdev = input_allocate_device(); 11349 if (!tpacpi_inputdev) { 11350 thinkpad_acpi_module_exit(); 11351 return -ENOMEM; 11352 } else { 11353 /* Prepare input device, but don't register */ 11354 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 11355 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 11356 tpacpi_inputdev->id.bustype = BUS_HOST; 11357 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 11358 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 11359 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 11360 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 11361 } 11362 11363 /* Init subdriver dependencies */ 11364 tpacpi_detect_brightness_capabilities(); 11365 11366 /* Init subdrivers */ 11367 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11368 ret = ibm_init(&ibms_init[i]); 11369 if (ret >= 0 && *ibms_init[i].param) 11370 ret = ibms_init[i].data->write(ibms_init[i].param); 11371 if (ret < 0) { 11372 thinkpad_acpi_module_exit(); 11373 return ret; 11374 } 11375 } 11376 11377 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 11378 11379 ret = input_register_device(tpacpi_inputdev); 11380 if (ret < 0) { 11381 pr_err("unable to register input device\n"); 11382 thinkpad_acpi_module_exit(); 11383 return ret; 11384 } else { 11385 tp_features.input_device_registered = 1; 11386 } 11387 11388 return 0; 11389 } 11390 11391 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 11392 11393 /* 11394 * This will autoload the driver in almost every ThinkPad 11395 * in widespread use. 11396 * 11397 * Only _VERY_ old models, like the 240, 240x and 570 lack 11398 * the HKEY event interface. 11399 */ 11400 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 11401 11402 /* 11403 * DMI matching for module autoloading 11404 * 11405 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11406 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 11407 * 11408 * Only models listed in thinkwiki will be supported, so add yours 11409 * if it is not there yet. 11410 */ 11411 #define IBM_BIOS_MODULE_ALIAS(__type) \ 11412 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 11413 11414 /* Ancient thinkpad BIOSes have to be identified by 11415 * BIOS type or model number, and there are far less 11416 * BIOS types than model numbers... */ 11417 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 11418 11419 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 11420 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 11421 MODULE_DESCRIPTION(TPACPI_DESC); 11422 MODULE_VERSION(TPACPI_VERSION); 11423 MODULE_LICENSE("GPL"); 11424 11425 module_init(thinkpad_acpi_module_init); 11426 module_exit(thinkpad_acpi_module_exit); 11427