1 /* 2 * thinkpad_acpi.c - ThinkPad ACPI Extras 3 * 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 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 21 * 02110-1301, USA. 22 */ 23 24 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 25 26 #define TPACPI_VERSION "0.25" 27 #define TPACPI_SYSFS_VERSION 0x030000 28 29 /* 30 * Changelog: 31 * 2007-10-20 changelog trimmed down 32 * 33 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to 34 * drivers/misc. 35 * 36 * 2006-11-22 0.13 new maintainer 37 * changelog now lives in git commit history, and will 38 * not be updated further in-file. 39 * 40 * 2005-03-17 0.11 support for 600e, 770x 41 * thanks to Jamie Lentin <lentinj@dial.pipex.com> 42 * 43 * 2005-01-16 0.9 use MODULE_VERSION 44 * thanks to Henrik Brix Andersen <brix@gentoo.org> 45 * fix parameter passing on module loading 46 * thanks to Rusty Russell <rusty@rustcorp.com.au> 47 * thanks to Jim Radford <radford@blackbean.org> 48 * 2004-11-08 0.8 fix init error case, don't return from a macro 49 * thanks to Chris Wright <chrisw@osdl.org> 50 */ 51 52 #include <linux/kernel.h> 53 #include <linux/module.h> 54 #include <linux/init.h> 55 #include <linux/types.h> 56 #include <linux/string.h> 57 #include <linux/list.h> 58 #include <linux/mutex.h> 59 #include <linux/sched.h> 60 #include <linux/kthread.h> 61 #include <linux/freezer.h> 62 #include <linux/delay.h> 63 #include <linux/slab.h> 64 #include <linux/nvram.h> 65 #include <linux/proc_fs.h> 66 #include <linux/seq_file.h> 67 #include <linux/sysfs.h> 68 #include <linux/backlight.h> 69 #include <linux/fb.h> 70 #include <linux/platform_device.h> 71 #include <linux/hwmon.h> 72 #include <linux/hwmon-sysfs.h> 73 #include <linux/input.h> 74 #include <linux/leds.h> 75 #include <linux/rfkill.h> 76 #include <linux/dmi.h> 77 #include <linux/jiffies.h> 78 #include <linux/workqueue.h> 79 #include <linux/acpi.h> 80 #include <linux/pci_ids.h> 81 #include <linux/thinkpad_acpi.h> 82 #include <sound/core.h> 83 #include <sound/control.h> 84 #include <sound/initval.h> 85 #include <linux/uaccess.h> 86 #include <acpi/video.h> 87 88 /* ThinkPad CMOS commands */ 89 #define TP_CMOS_VOLUME_DOWN 0 90 #define TP_CMOS_VOLUME_UP 1 91 #define TP_CMOS_VOLUME_MUTE 2 92 #define TP_CMOS_BRIGHTNESS_UP 4 93 #define TP_CMOS_BRIGHTNESS_DOWN 5 94 #define TP_CMOS_THINKLIGHT_ON 12 95 #define TP_CMOS_THINKLIGHT_OFF 13 96 97 /* NVRAM Addresses */ 98 enum tp_nvram_addr { 99 TP_NVRAM_ADDR_HK2 = 0x57, 100 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 101 TP_NVRAM_ADDR_VIDEO = 0x59, 102 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 103 TP_NVRAM_ADDR_MIXER = 0x60, 104 }; 105 106 /* NVRAM bit masks */ 107 enum { 108 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 109 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 110 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 111 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 112 TP_NVRAM_MASK_THINKLIGHT = 0x10, 113 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 114 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 115 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 116 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 117 TP_NVRAM_MASK_MUTE = 0x40, 118 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 119 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 120 TP_NVRAM_POS_LEVEL_VOLUME = 0, 121 }; 122 123 /* Misc NVRAM-related */ 124 enum { 125 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 126 }; 127 128 /* ACPI HIDs */ 129 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 130 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 131 #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 132 #define TPACPI_ACPI_EC_HID "PNP0C09" 133 134 /* Input IDs */ 135 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 136 #define TPACPI_HKEY_INPUT_VERSION 0x4101 137 138 /* ACPI \WGSV commands */ 139 enum { 140 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 141 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 142 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 143 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 144 }; 145 146 /* TP_ACPI_WGSV_GET_STATE bits */ 147 enum { 148 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 149 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 150 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 151 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 152 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 153 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 154 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 155 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 156 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 157 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 158 }; 159 160 /* HKEY events */ 161 enum tpacpi_hkey_event_t { 162 /* Hotkey-related */ 163 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ 164 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 165 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 166 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 167 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 168 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 169 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 170 171 /* Reasons for waking up from S3/S4 */ 172 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 173 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 174 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 175 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 176 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 177 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 178 179 /* Auto-sleep after eject request */ 180 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 181 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 182 183 /* Misc bay events */ 184 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 185 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 186 or port replicator */ 187 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 188 dock or port replicator */ 189 190 /* User-interface events */ 191 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 192 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 193 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 194 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 195 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 196 * enter/leave tablet mode 197 */ 198 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 199 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 200 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 201 202 /* Key-related user-interface events */ 203 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 204 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 205 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 206 207 /* Thermal events */ 208 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 209 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 210 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 211 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 212 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */ 213 214 /* AC-related events */ 215 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 216 217 /* Misc */ 218 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 219 }; 220 221 /**************************************************************************** 222 * Main driver 223 */ 224 225 #define TPACPI_NAME "thinkpad" 226 #define TPACPI_DESC "ThinkPad ACPI Extras" 227 #define TPACPI_FILE TPACPI_NAME "_acpi" 228 #define TPACPI_URL "http://ibm-acpi.sf.net/" 229 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 230 231 #define TPACPI_PROC_DIR "ibm" 232 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 233 #define TPACPI_DRVR_NAME TPACPI_FILE 234 #define TPACPI_DRVR_SHORTNAME "tpacpi" 235 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 236 237 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 238 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 239 240 #define TPACPI_MAX_ACPI_ARGS 3 241 242 /* Debugging printk groups */ 243 #define TPACPI_DBG_ALL 0xffff 244 #define TPACPI_DBG_DISCLOSETASK 0x8000 245 #define TPACPI_DBG_INIT 0x0001 246 #define TPACPI_DBG_EXIT 0x0002 247 #define TPACPI_DBG_RFKILL 0x0004 248 #define TPACPI_DBG_HKEY 0x0008 249 #define TPACPI_DBG_FAN 0x0010 250 #define TPACPI_DBG_BRGHT 0x0020 251 #define TPACPI_DBG_MIXER 0x0040 252 253 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") 254 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") 255 #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) 256 257 258 /**************************************************************************** 259 * Driver-wide structs and misc. variables 260 */ 261 262 struct ibm_struct; 263 264 struct tp_acpi_drv_struct { 265 const struct acpi_device_id *hid; 266 struct acpi_driver *driver; 267 268 void (*notify) (struct ibm_struct *, u32); 269 acpi_handle *handle; 270 u32 type; 271 struct acpi_device *device; 272 }; 273 274 struct ibm_struct { 275 char *name; 276 277 int (*read) (struct seq_file *); 278 int (*write) (char *); 279 void (*exit) (void); 280 void (*resume) (void); 281 void (*suspend) (void); 282 void (*shutdown) (void); 283 284 struct list_head all_drivers; 285 286 struct tp_acpi_drv_struct *acpi; 287 288 struct { 289 u8 acpi_driver_registered:1; 290 u8 acpi_notify_installed:1; 291 u8 proc_created:1; 292 u8 init_called:1; 293 u8 experimental:1; 294 } flags; 295 }; 296 297 struct ibm_init_struct { 298 char param[32]; 299 300 int (*init) (struct ibm_init_struct *); 301 umode_t base_procfs_mode; 302 struct ibm_struct *data; 303 }; 304 305 static struct { 306 u32 bluetooth:1; 307 u32 hotkey:1; 308 u32 hotkey_mask:1; 309 u32 hotkey_wlsw:1; 310 enum { 311 TP_HOTKEY_TABLET_NONE = 0, 312 TP_HOTKEY_TABLET_USES_MHKG, 313 TP_HOTKEY_TABLET_USES_GMMS, 314 } hotkey_tablet; 315 u32 kbdlight:1; 316 u32 light:1; 317 u32 light_status:1; 318 u32 bright_acpimode:1; 319 u32 bright_unkfw:1; 320 u32 wan:1; 321 u32 uwb:1; 322 u32 fan_ctrl_status_undef:1; 323 u32 second_fan:1; 324 u32 beep_needs_two_args:1; 325 u32 mixer_no_level_control:1; 326 u32 input_device_registered:1; 327 u32 platform_drv_registered:1; 328 u32 platform_drv_attrs_registered:1; 329 u32 sensors_pdrv_registered:1; 330 u32 sensors_pdrv_attrs_registered:1; 331 u32 sensors_pdev_attrs_registered:1; 332 u32 hotkey_poll_active:1; 333 u32 has_adaptive_kbd:1; 334 } tp_features; 335 336 static struct { 337 u16 hotkey_mask_ff:1; 338 u16 volume_ctrl_forbidden:1; 339 } tp_warned; 340 341 struct thinkpad_id_data { 342 unsigned int vendor; /* ThinkPad vendor: 343 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 344 345 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 346 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 347 348 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */ 349 u16 ec_model; 350 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */ 351 u16 ec_release; 352 353 char *model_str; /* ThinkPad T43 */ 354 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 355 }; 356 static struct thinkpad_id_data thinkpad_id; 357 358 static enum { 359 TPACPI_LIFE_INIT = 0, 360 TPACPI_LIFE_RUNNING, 361 TPACPI_LIFE_EXITING, 362 } tpacpi_lifecycle; 363 364 static int experimental; 365 static u32 dbg_level; 366 367 static struct workqueue_struct *tpacpi_wq; 368 369 enum led_status_t { 370 TPACPI_LED_OFF = 0, 371 TPACPI_LED_ON, 372 TPACPI_LED_BLINK, 373 }; 374 375 /* tpacpi LED class */ 376 struct tpacpi_led_classdev { 377 struct led_classdev led_classdev; 378 int led; 379 }; 380 381 /* brightness level capabilities */ 382 static unsigned int bright_maxlvl; /* 0 = unknown */ 383 384 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 385 static int dbg_wlswemul; 386 static bool tpacpi_wlsw_emulstate; 387 static int dbg_bluetoothemul; 388 static bool tpacpi_bluetooth_emulstate; 389 static int dbg_wwanemul; 390 static bool tpacpi_wwan_emulstate; 391 static int dbg_uwbemul; 392 static bool tpacpi_uwb_emulstate; 393 #endif 394 395 396 /************************************************************************* 397 * Debugging helpers 398 */ 399 400 #define dbg_printk(a_dbg_level, format, arg...) \ 401 do { \ 402 if (dbg_level & (a_dbg_level)) \ 403 printk(KERN_DEBUG pr_fmt("%s: " format), \ 404 __func__, ##arg); \ 405 } while (0) 406 407 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 408 #define vdbg_printk dbg_printk 409 static const char *str_supported(int is_supported); 410 #else 411 static inline const char *str_supported(int is_supported) { return ""; } 412 #define vdbg_printk(a_dbg_level, format, arg...) \ 413 do { if (0) no_printk(format, ##arg); } while (0) 414 #endif 415 416 static void tpacpi_log_usertask(const char * const what) 417 { 418 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 419 what, task_tgid_vnr(current)); 420 } 421 422 #define tpacpi_disclose_usertask(what, format, arg...) \ 423 do { \ 424 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 425 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 426 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 427 what, task_tgid_vnr(current), ## arg); \ 428 } \ 429 } while (0) 430 431 /* 432 * Quirk handling helpers 433 * 434 * ThinkPad IDs and versions seen in the field so far 435 * are two-characters from the set [0-9A-Z], i.e. base 36. 436 * 437 * We use values well outside that range as specials. 438 */ 439 440 #define TPACPI_MATCH_ANY 0xffffU 441 #define TPACPI_MATCH_UNKNOWN 0U 442 443 /* TPID('1', 'Y') == 0x5931 */ 444 #define TPID(__c1, __c2) (((__c2) << 8) | (__c1)) 445 446 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 447 { .vendor = PCI_VENDOR_ID_IBM, \ 448 .bios = TPID(__id1, __id2), \ 449 .ec = TPACPI_MATCH_ANY, \ 450 .quirks = (__quirk) } 451 452 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 453 { .vendor = PCI_VENDOR_ID_LENOVO, \ 454 .bios = TPID(__id1, __id2), \ 455 .ec = TPACPI_MATCH_ANY, \ 456 .quirks = (__quirk) } 457 458 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 459 { .vendor = PCI_VENDOR_ID_LENOVO, \ 460 .bios = TPACPI_MATCH_ANY, \ 461 .ec = TPID(__id1, __id2), \ 462 .quirks = (__quirk) } 463 464 struct tpacpi_quirk { 465 unsigned int vendor; 466 u16 bios; 467 u16 ec; 468 unsigned long quirks; 469 }; 470 471 /** 472 * tpacpi_check_quirks() - search BIOS/EC version on a list 473 * @qlist: array of &struct tpacpi_quirk 474 * @qlist_size: number of elements in @qlist 475 * 476 * Iterates over a quirks list until one is found that matches the 477 * ThinkPad's vendor, BIOS and EC model. 478 * 479 * Returns 0 if nothing matches, otherwise returns the quirks field of 480 * the matching &struct tpacpi_quirk entry. 481 * 482 * The match criteria is: vendor, ec and bios much match. 483 */ 484 static unsigned long __init tpacpi_check_quirks( 485 const struct tpacpi_quirk *qlist, 486 unsigned int qlist_size) 487 { 488 while (qlist_size) { 489 if ((qlist->vendor == thinkpad_id.vendor || 490 qlist->vendor == TPACPI_MATCH_ANY) && 491 (qlist->bios == thinkpad_id.bios_model || 492 qlist->bios == TPACPI_MATCH_ANY) && 493 (qlist->ec == thinkpad_id.ec_model || 494 qlist->ec == TPACPI_MATCH_ANY)) 495 return qlist->quirks; 496 497 qlist_size--; 498 qlist++; 499 } 500 return 0; 501 } 502 503 static inline bool __pure __init tpacpi_is_lenovo(void) 504 { 505 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 506 } 507 508 static inline bool __pure __init tpacpi_is_ibm(void) 509 { 510 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 511 } 512 513 /**************************************************************************** 514 **************************************************************************** 515 * 516 * ACPI Helpers and device model 517 * 518 **************************************************************************** 519 ****************************************************************************/ 520 521 /************************************************************************* 522 * ACPI basic handles 523 */ 524 525 static acpi_handle root_handle; 526 static acpi_handle ec_handle; 527 528 #define TPACPI_HANDLE(object, parent, paths...) \ 529 static acpi_handle object##_handle; \ 530 static const acpi_handle * const object##_parent __initconst = \ 531 &parent##_handle; \ 532 static char *object##_paths[] __initdata = { paths } 533 534 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 535 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 536 537 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 538 /* T4x, X31, X40 */ 539 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 540 "\\CMS", /* R40, R40e */ 541 ); /* all others */ 542 543 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 544 "^HKEY", /* R30, R31 */ 545 "HKEY", /* all others */ 546 ); /* 570 */ 547 548 /************************************************************************* 549 * ACPI helpers 550 */ 551 552 static int acpi_evalf(acpi_handle handle, 553 int *res, char *method, char *fmt, ...) 554 { 555 char *fmt0 = fmt; 556 struct acpi_object_list params; 557 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 558 struct acpi_buffer result, *resultp; 559 union acpi_object out_obj; 560 acpi_status status; 561 va_list ap; 562 char res_type; 563 int success; 564 int quiet; 565 566 if (!*fmt) { 567 pr_err("acpi_evalf() called with empty format\n"); 568 return 0; 569 } 570 571 if (*fmt == 'q') { 572 quiet = 1; 573 fmt++; 574 } else 575 quiet = 0; 576 577 res_type = *(fmt++); 578 579 params.count = 0; 580 params.pointer = &in_objs[0]; 581 582 va_start(ap, fmt); 583 while (*fmt) { 584 char c = *(fmt++); 585 switch (c) { 586 case 'd': /* int */ 587 in_objs[params.count].integer.value = va_arg(ap, int); 588 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 589 break; 590 /* add more types as needed */ 591 default: 592 pr_err("acpi_evalf() called with invalid format character '%c'\n", 593 c); 594 va_end(ap); 595 return 0; 596 } 597 } 598 va_end(ap); 599 600 if (res_type != 'v') { 601 result.length = sizeof(out_obj); 602 result.pointer = &out_obj; 603 resultp = &result; 604 } else 605 resultp = NULL; 606 607 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 608 609 switch (res_type) { 610 case 'd': /* int */ 611 success = (status == AE_OK && 612 out_obj.type == ACPI_TYPE_INTEGER); 613 if (success && res) 614 *res = out_obj.integer.value; 615 break; 616 case 'v': /* void */ 617 success = status == AE_OK; 618 break; 619 /* add more types as needed */ 620 default: 621 pr_err("acpi_evalf() called with invalid format character '%c'\n", 622 res_type); 623 return 0; 624 } 625 626 if (!success && !quiet) 627 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 628 method, fmt0, acpi_format_exception(status)); 629 630 return success; 631 } 632 633 static int acpi_ec_read(int i, u8 *p) 634 { 635 int v; 636 637 if (ecrd_handle) { 638 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 639 return 0; 640 *p = v; 641 } else { 642 if (ec_read(i, p) < 0) 643 return 0; 644 } 645 646 return 1; 647 } 648 649 static int acpi_ec_write(int i, u8 v) 650 { 651 if (ecwr_handle) { 652 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 653 return 0; 654 } else { 655 if (ec_write(i, v) < 0) 656 return 0; 657 } 658 659 return 1; 660 } 661 662 static int issue_thinkpad_cmos_command(int cmos_cmd) 663 { 664 if (!cmos_handle) 665 return -ENXIO; 666 667 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 668 return -EIO; 669 670 return 0; 671 } 672 673 /************************************************************************* 674 * ACPI device model 675 */ 676 677 #define TPACPI_ACPIHANDLE_INIT(object) \ 678 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 679 object##_paths, ARRAY_SIZE(object##_paths)) 680 681 static void __init drv_acpi_handle_init(const char *name, 682 acpi_handle *handle, const acpi_handle parent, 683 char **paths, const int num_paths) 684 { 685 int i; 686 acpi_status status; 687 688 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 689 name); 690 691 for (i = 0; i < num_paths; i++) { 692 status = acpi_get_handle(parent, paths[i], handle); 693 if (ACPI_SUCCESS(status)) { 694 dbg_printk(TPACPI_DBG_INIT, 695 "Found ACPI handle %s for %s\n", 696 paths[i], name); 697 return; 698 } 699 } 700 701 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 702 name); 703 *handle = NULL; 704 } 705 706 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 707 u32 level, void *context, void **return_value) 708 { 709 struct acpi_device *dev; 710 if (!strcmp(context, "video")) { 711 if (acpi_bus_get_device(handle, &dev)) 712 return AE_OK; 713 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 714 return AE_OK; 715 } 716 717 *(acpi_handle *)return_value = handle; 718 719 return AE_CTRL_TERMINATE; 720 } 721 722 static void __init tpacpi_acpi_handle_locate(const char *name, 723 const char *hid, 724 acpi_handle *handle) 725 { 726 acpi_status status; 727 acpi_handle device_found; 728 729 BUG_ON(!name || !handle); 730 vdbg_printk(TPACPI_DBG_INIT, 731 "trying to locate ACPI handle for %s, using HID %s\n", 732 name, hid ? hid : "NULL"); 733 734 memset(&device_found, 0, sizeof(device_found)); 735 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 736 (void *)name, &device_found); 737 738 *handle = NULL; 739 740 if (ACPI_SUCCESS(status)) { 741 *handle = device_found; 742 dbg_printk(TPACPI_DBG_INIT, 743 "Found ACPI handle for %s\n", name); 744 } else { 745 vdbg_printk(TPACPI_DBG_INIT, 746 "Could not locate an ACPI handle for %s: %s\n", 747 name, acpi_format_exception(status)); 748 } 749 } 750 751 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 752 { 753 struct ibm_struct *ibm = data; 754 755 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 756 return; 757 758 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 759 return; 760 761 ibm->acpi->notify(ibm, event); 762 } 763 764 static int __init setup_acpi_notify(struct ibm_struct *ibm) 765 { 766 acpi_status status; 767 int rc; 768 769 BUG_ON(!ibm->acpi); 770 771 if (!*ibm->acpi->handle) 772 return 0; 773 774 vdbg_printk(TPACPI_DBG_INIT, 775 "setting up ACPI notify for %s\n", ibm->name); 776 777 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); 778 if (rc < 0) { 779 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc); 780 return -ENODEV; 781 } 782 783 ibm->acpi->device->driver_data = ibm; 784 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 785 TPACPI_ACPI_EVENT_PREFIX, 786 ibm->name); 787 788 status = acpi_install_notify_handler(*ibm->acpi->handle, 789 ibm->acpi->type, dispatch_acpi_notify, ibm); 790 if (ACPI_FAILURE(status)) { 791 if (status == AE_ALREADY_EXISTS) { 792 pr_notice("another device driver is already handling %s events\n", 793 ibm->name); 794 } else { 795 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 796 ibm->name, acpi_format_exception(status)); 797 } 798 return -ENODEV; 799 } 800 ibm->flags.acpi_notify_installed = 1; 801 return 0; 802 } 803 804 static int __init tpacpi_device_add(struct acpi_device *device) 805 { 806 return 0; 807 } 808 809 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 810 { 811 int rc; 812 813 dbg_printk(TPACPI_DBG_INIT, 814 "registering %s as an ACPI driver\n", ibm->name); 815 816 BUG_ON(!ibm->acpi); 817 818 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 819 if (!ibm->acpi->driver) { 820 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 821 return -ENOMEM; 822 } 823 824 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 825 ibm->acpi->driver->ids = ibm->acpi->hid; 826 827 ibm->acpi->driver->ops.add = &tpacpi_device_add; 828 829 rc = acpi_bus_register_driver(ibm->acpi->driver); 830 if (rc < 0) { 831 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 832 ibm->name, rc); 833 kfree(ibm->acpi->driver); 834 ibm->acpi->driver = NULL; 835 } else if (!rc) 836 ibm->flags.acpi_driver_registered = 1; 837 838 return rc; 839 } 840 841 842 /**************************************************************************** 843 **************************************************************************** 844 * 845 * Procfs Helpers 846 * 847 **************************************************************************** 848 ****************************************************************************/ 849 850 static int dispatch_proc_show(struct seq_file *m, void *v) 851 { 852 struct ibm_struct *ibm = m->private; 853 854 if (!ibm || !ibm->read) 855 return -EINVAL; 856 return ibm->read(m); 857 } 858 859 static int dispatch_proc_open(struct inode *inode, struct file *file) 860 { 861 return single_open(file, dispatch_proc_show, PDE_DATA(inode)); 862 } 863 864 static ssize_t dispatch_proc_write(struct file *file, 865 const char __user *userbuf, 866 size_t count, loff_t *pos) 867 { 868 struct ibm_struct *ibm = PDE_DATA(file_inode(file)); 869 char *kernbuf; 870 int ret; 871 872 if (!ibm || !ibm->write) 873 return -EINVAL; 874 if (count > PAGE_SIZE - 2) 875 return -EINVAL; 876 877 kernbuf = kmalloc(count + 2, GFP_KERNEL); 878 if (!kernbuf) 879 return -ENOMEM; 880 881 if (copy_from_user(kernbuf, userbuf, count)) { 882 kfree(kernbuf); 883 return -EFAULT; 884 } 885 886 kernbuf[count] = 0; 887 strcat(kernbuf, ","); 888 ret = ibm->write(kernbuf); 889 if (ret == 0) 890 ret = count; 891 892 kfree(kernbuf); 893 894 return ret; 895 } 896 897 static const struct file_operations dispatch_proc_fops = { 898 .owner = THIS_MODULE, 899 .open = dispatch_proc_open, 900 .read = seq_read, 901 .llseek = seq_lseek, 902 .release = single_release, 903 .write = dispatch_proc_write, 904 }; 905 906 static char *next_cmd(char **cmds) 907 { 908 char *start = *cmds; 909 char *end; 910 911 while ((end = strchr(start, ',')) && end == start) 912 start = end + 1; 913 914 if (!end) 915 return NULL; 916 917 *end = 0; 918 *cmds = end + 1; 919 return start; 920 } 921 922 923 /**************************************************************************** 924 **************************************************************************** 925 * 926 * Device model: input, hwmon and platform 927 * 928 **************************************************************************** 929 ****************************************************************************/ 930 931 static struct platform_device *tpacpi_pdev; 932 static struct platform_device *tpacpi_sensors_pdev; 933 static struct device *tpacpi_hwmon; 934 static struct input_dev *tpacpi_inputdev; 935 static struct mutex tpacpi_inputdev_send_mutex; 936 static LIST_HEAD(tpacpi_all_drivers); 937 938 #ifdef CONFIG_PM_SLEEP 939 static int tpacpi_suspend_handler(struct device *dev) 940 { 941 struct ibm_struct *ibm, *itmp; 942 943 list_for_each_entry_safe(ibm, itmp, 944 &tpacpi_all_drivers, 945 all_drivers) { 946 if (ibm->suspend) 947 (ibm->suspend)(); 948 } 949 950 return 0; 951 } 952 953 static int tpacpi_resume_handler(struct device *dev) 954 { 955 struct ibm_struct *ibm, *itmp; 956 957 list_for_each_entry_safe(ibm, itmp, 958 &tpacpi_all_drivers, 959 all_drivers) { 960 if (ibm->resume) 961 (ibm->resume)(); 962 } 963 964 return 0; 965 } 966 #endif 967 968 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 969 tpacpi_suspend_handler, tpacpi_resume_handler); 970 971 static void tpacpi_shutdown_handler(struct platform_device *pdev) 972 { 973 struct ibm_struct *ibm, *itmp; 974 975 list_for_each_entry_safe(ibm, itmp, 976 &tpacpi_all_drivers, 977 all_drivers) { 978 if (ibm->shutdown) 979 (ibm->shutdown)(); 980 } 981 } 982 983 static struct platform_driver tpacpi_pdriver = { 984 .driver = { 985 .name = TPACPI_DRVR_NAME, 986 .pm = &tpacpi_pm, 987 }, 988 .shutdown = tpacpi_shutdown_handler, 989 }; 990 991 static struct platform_driver tpacpi_hwmon_pdriver = { 992 .driver = { 993 .name = TPACPI_HWMON_DRVR_NAME, 994 }, 995 }; 996 997 /************************************************************************* 998 * sysfs support helpers 999 */ 1000 1001 struct attribute_set { 1002 unsigned int members, max_members; 1003 struct attribute_group group; 1004 }; 1005 1006 struct attribute_set_obj { 1007 struct attribute_set s; 1008 struct attribute *a; 1009 } __attribute__((packed)); 1010 1011 static struct attribute_set *create_attr_set(unsigned int max_members, 1012 const char *name) 1013 { 1014 struct attribute_set_obj *sobj; 1015 1016 if (max_members == 0) 1017 return NULL; 1018 1019 /* Allocates space for implicit NULL at the end too */ 1020 sobj = kzalloc(sizeof(struct attribute_set_obj) + 1021 max_members * sizeof(struct attribute *), 1022 GFP_KERNEL); 1023 if (!sobj) 1024 return NULL; 1025 sobj->s.max_members = max_members; 1026 sobj->s.group.attrs = &sobj->a; 1027 sobj->s.group.name = name; 1028 1029 return &sobj->s; 1030 } 1031 1032 #define destroy_attr_set(_set) \ 1033 kfree(_set); 1034 1035 /* not multi-threaded safe, use it in a single thread per set */ 1036 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) 1037 { 1038 if (!s || !attr) 1039 return -EINVAL; 1040 1041 if (s->members >= s->max_members) 1042 return -ENOMEM; 1043 1044 s->group.attrs[s->members] = attr; 1045 s->members++; 1046 1047 return 0; 1048 } 1049 1050 static int add_many_to_attr_set(struct attribute_set *s, 1051 struct attribute **attr, 1052 unsigned int count) 1053 { 1054 int i, res; 1055 1056 for (i = 0; i < count; i++) { 1057 res = add_to_attr_set(s, attr[i]); 1058 if (res) 1059 return res; 1060 } 1061 1062 return 0; 1063 } 1064 1065 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) 1066 { 1067 sysfs_remove_group(kobj, &s->group); 1068 destroy_attr_set(s); 1069 } 1070 1071 #define register_attr_set_with_sysfs(_attr_set, _kobj) \ 1072 sysfs_create_group(_kobj, &_attr_set->group) 1073 1074 static int parse_strtoul(const char *buf, 1075 unsigned long max, unsigned long *value) 1076 { 1077 char *endp; 1078 1079 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1080 endp = skip_spaces(endp); 1081 if (*endp || *value > max) 1082 return -EINVAL; 1083 1084 return 0; 1085 } 1086 1087 static void tpacpi_disable_brightness_delay(void) 1088 { 1089 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1090 pr_notice("ACPI backlight control delay disabled\n"); 1091 } 1092 1093 static void printk_deprecated_attribute(const char * const what, 1094 const char * const details) 1095 { 1096 tpacpi_log_usertask("deprecated sysfs attribute"); 1097 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", 1098 what, details); 1099 } 1100 1101 /************************************************************************* 1102 * rfkill and radio control support helpers 1103 */ 1104 1105 /* 1106 * ThinkPad-ACPI firmware handling model: 1107 * 1108 * WLSW (master wireless switch) is event-driven, and is common to all 1109 * firmware-controlled radios. It cannot be controlled, just monitored, 1110 * as expected. It overrides all radio state in firmware 1111 * 1112 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1113 * (TODO: verify how WLSW interacts with the returned radio state). 1114 * 1115 * The only time there are shadow radio state changes, is when 1116 * masked-off hotkeys are used. 1117 */ 1118 1119 /* 1120 * Internal driver API for radio state: 1121 * 1122 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1123 * bool: true means radio blocked (off) 1124 */ 1125 enum tpacpi_rfkill_state { 1126 TPACPI_RFK_RADIO_OFF = 0, 1127 TPACPI_RFK_RADIO_ON 1128 }; 1129 1130 /* rfkill switches */ 1131 enum tpacpi_rfk_id { 1132 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1133 TPACPI_RFK_WWAN_SW_ID, 1134 TPACPI_RFK_UWB_SW_ID, 1135 TPACPI_RFK_SW_MAX 1136 }; 1137 1138 static const char *tpacpi_rfkill_names[] = { 1139 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1140 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1141 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1142 [TPACPI_RFK_SW_MAX] = NULL 1143 }; 1144 1145 /* ThinkPad-ACPI rfkill subdriver */ 1146 struct tpacpi_rfk { 1147 struct rfkill *rfkill; 1148 enum tpacpi_rfk_id id; 1149 const struct tpacpi_rfk_ops *ops; 1150 }; 1151 1152 struct tpacpi_rfk_ops { 1153 /* firmware interface */ 1154 int (*get_status)(void); 1155 int (*set_status)(const enum tpacpi_rfkill_state); 1156 }; 1157 1158 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1159 1160 /* Query FW and update rfkill sw state for a given rfkill switch */ 1161 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1162 { 1163 int status; 1164 1165 if (!tp_rfk) 1166 return -ENODEV; 1167 1168 status = (tp_rfk->ops->get_status)(); 1169 if (status < 0) 1170 return status; 1171 1172 rfkill_set_sw_state(tp_rfk->rfkill, 1173 (status == TPACPI_RFK_RADIO_OFF)); 1174 1175 return status; 1176 } 1177 1178 /* Query FW and update rfkill sw state for all rfkill switches */ 1179 static void tpacpi_rfk_update_swstate_all(void) 1180 { 1181 unsigned int i; 1182 1183 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) 1184 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]); 1185 } 1186 1187 /* 1188 * Sync the HW-blocking state of all rfkill switches, 1189 * do notice it causes the rfkill core to schedule uevents 1190 */ 1191 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1192 { 1193 unsigned int i; 1194 struct tpacpi_rfk *tp_rfk; 1195 1196 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1197 tp_rfk = tpacpi_rfkill_switches[i]; 1198 if (tp_rfk) { 1199 if (rfkill_set_hw_state(tp_rfk->rfkill, 1200 blocked)) { 1201 /* ignore -- we track sw block */ 1202 } 1203 } 1204 } 1205 } 1206 1207 /* Call to get the WLSW state from the firmware */ 1208 static int hotkey_get_wlsw(void); 1209 1210 /* Call to query WLSW state and update all rfkill switches */ 1211 static bool tpacpi_rfk_check_hwblock_state(void) 1212 { 1213 int res = hotkey_get_wlsw(); 1214 int hw_blocked; 1215 1216 /* When unknown or unsupported, we have to assume it is unblocked */ 1217 if (res < 0) 1218 return false; 1219 1220 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1221 tpacpi_rfk_update_hwblock_state(hw_blocked); 1222 1223 return hw_blocked; 1224 } 1225 1226 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1227 { 1228 struct tpacpi_rfk *tp_rfk = data; 1229 int res; 1230 1231 dbg_printk(TPACPI_DBG_RFKILL, 1232 "request to change radio state to %s\n", 1233 blocked ? "blocked" : "unblocked"); 1234 1235 /* try to set radio state */ 1236 res = (tp_rfk->ops->set_status)(blocked ? 1237 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1238 1239 /* and update the rfkill core with whatever the FW really did */ 1240 tpacpi_rfk_update_swstate(tp_rfk); 1241 1242 return (res < 0) ? res : 0; 1243 } 1244 1245 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1246 .set_block = tpacpi_rfk_hook_set_block, 1247 }; 1248 1249 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1250 const struct tpacpi_rfk_ops *tp_rfkops, 1251 const enum rfkill_type rfktype, 1252 const char *name, 1253 const bool set_default) 1254 { 1255 struct tpacpi_rfk *atp_rfk; 1256 int res; 1257 bool sw_state = false; 1258 bool hw_state; 1259 int sw_status; 1260 1261 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1262 1263 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1264 if (atp_rfk) 1265 atp_rfk->rfkill = rfkill_alloc(name, 1266 &tpacpi_pdev->dev, 1267 rfktype, 1268 &tpacpi_rfk_rfkill_ops, 1269 atp_rfk); 1270 if (!atp_rfk || !atp_rfk->rfkill) { 1271 pr_err("failed to allocate memory for rfkill class\n"); 1272 kfree(atp_rfk); 1273 return -ENOMEM; 1274 } 1275 1276 atp_rfk->id = id; 1277 atp_rfk->ops = tp_rfkops; 1278 1279 sw_status = (tp_rfkops->get_status)(); 1280 if (sw_status < 0) { 1281 pr_err("failed to read initial state for %s, error %d\n", 1282 name, sw_status); 1283 } else { 1284 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1285 if (set_default) { 1286 /* try to keep the initial state, since we ask the 1287 * firmware to preserve it across S5 in NVRAM */ 1288 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1289 } 1290 } 1291 hw_state = tpacpi_rfk_check_hwblock_state(); 1292 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1293 1294 res = rfkill_register(atp_rfk->rfkill); 1295 if (res < 0) { 1296 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1297 rfkill_destroy(atp_rfk->rfkill); 1298 kfree(atp_rfk); 1299 return res; 1300 } 1301 1302 tpacpi_rfkill_switches[id] = atp_rfk; 1303 1304 pr_info("rfkill switch %s: radio is %sblocked\n", 1305 name, (sw_state || hw_state) ? "" : "un"); 1306 return 0; 1307 } 1308 1309 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1310 { 1311 struct tpacpi_rfk *tp_rfk; 1312 1313 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1314 1315 tp_rfk = tpacpi_rfkill_switches[id]; 1316 if (tp_rfk) { 1317 rfkill_unregister(tp_rfk->rfkill); 1318 rfkill_destroy(tp_rfk->rfkill); 1319 tpacpi_rfkill_switches[id] = NULL; 1320 kfree(tp_rfk); 1321 } 1322 } 1323 1324 static void printk_deprecated_rfkill_attribute(const char * const what) 1325 { 1326 printk_deprecated_attribute(what, 1327 "Please switch to generic rfkill before year 2010"); 1328 } 1329 1330 /* sysfs <radio> enable ------------------------------------------------ */ 1331 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1332 struct device_attribute *attr, 1333 char *buf) 1334 { 1335 int status; 1336 1337 printk_deprecated_rfkill_attribute(attr->attr.name); 1338 1339 /* This is in the ABI... */ 1340 if (tpacpi_rfk_check_hwblock_state()) { 1341 status = TPACPI_RFK_RADIO_OFF; 1342 } else { 1343 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1344 if (status < 0) 1345 return status; 1346 } 1347 1348 return snprintf(buf, PAGE_SIZE, "%d\n", 1349 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1350 } 1351 1352 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1353 struct device_attribute *attr, 1354 const char *buf, size_t count) 1355 { 1356 unsigned long t; 1357 int res; 1358 1359 printk_deprecated_rfkill_attribute(attr->attr.name); 1360 1361 if (parse_strtoul(buf, 1, &t)) 1362 return -EINVAL; 1363 1364 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1365 1366 /* This is in the ABI... */ 1367 if (tpacpi_rfk_check_hwblock_state() && !!t) 1368 return -EPERM; 1369 1370 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1371 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1372 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1373 1374 return (res < 0) ? res : count; 1375 } 1376 1377 /* procfs -------------------------------------------------------------- */ 1378 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1379 { 1380 if (id >= TPACPI_RFK_SW_MAX) 1381 seq_printf(m, "status:\t\tnot supported\n"); 1382 else { 1383 int status; 1384 1385 /* This is in the ABI... */ 1386 if (tpacpi_rfk_check_hwblock_state()) { 1387 status = TPACPI_RFK_RADIO_OFF; 1388 } else { 1389 status = tpacpi_rfk_update_swstate( 1390 tpacpi_rfkill_switches[id]); 1391 if (status < 0) 1392 return status; 1393 } 1394 1395 seq_printf(m, "status:\t\t%s\n", 1396 (status == TPACPI_RFK_RADIO_ON) ? 1397 "enabled" : "disabled"); 1398 seq_printf(m, "commands:\tenable, disable\n"); 1399 } 1400 1401 return 0; 1402 } 1403 1404 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1405 { 1406 char *cmd; 1407 int status = -1; 1408 int res = 0; 1409 1410 if (id >= TPACPI_RFK_SW_MAX) 1411 return -ENODEV; 1412 1413 while ((cmd = next_cmd(&buf))) { 1414 if (strlencmp(cmd, "enable") == 0) 1415 status = TPACPI_RFK_RADIO_ON; 1416 else if (strlencmp(cmd, "disable") == 0) 1417 status = TPACPI_RFK_RADIO_OFF; 1418 else 1419 return -EINVAL; 1420 } 1421 1422 if (status != -1) { 1423 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1424 (status == TPACPI_RFK_RADIO_ON) ? 1425 "enable" : "disable", 1426 tpacpi_rfkill_names[id]); 1427 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1428 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1429 } 1430 1431 return res; 1432 } 1433 1434 /************************************************************************* 1435 * thinkpad-acpi driver attributes 1436 */ 1437 1438 /* interface_version --------------------------------------------------- */ 1439 static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1440 { 1441 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); 1442 } 1443 static DRIVER_ATTR_RO(interface_version); 1444 1445 /* debug_level --------------------------------------------------------- */ 1446 static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1447 { 1448 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); 1449 } 1450 1451 static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1452 size_t count) 1453 { 1454 unsigned long t; 1455 1456 if (parse_strtoul(buf, 0xffff, &t)) 1457 return -EINVAL; 1458 1459 dbg_level = t; 1460 1461 return count; 1462 } 1463 static DRIVER_ATTR_RW(debug_level); 1464 1465 /* version ------------------------------------------------------------- */ 1466 static ssize_t version_show(struct device_driver *drv, char *buf) 1467 { 1468 return snprintf(buf, PAGE_SIZE, "%s v%s\n", 1469 TPACPI_DESC, TPACPI_VERSION); 1470 } 1471 static DRIVER_ATTR_RO(version); 1472 1473 /* --------------------------------------------------------------------- */ 1474 1475 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1476 1477 /* wlsw_emulstate ------------------------------------------------------ */ 1478 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1479 { 1480 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate); 1481 } 1482 1483 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1484 size_t count) 1485 { 1486 unsigned long t; 1487 1488 if (parse_strtoul(buf, 1, &t)) 1489 return -EINVAL; 1490 1491 if (tpacpi_wlsw_emulstate != !!t) { 1492 tpacpi_wlsw_emulstate = !!t; 1493 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1494 } 1495 1496 return count; 1497 } 1498 static DRIVER_ATTR_RW(wlsw_emulstate); 1499 1500 /* bluetooth_emulstate ------------------------------------------------- */ 1501 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1502 { 1503 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate); 1504 } 1505 1506 static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1507 const char *buf, size_t count) 1508 { 1509 unsigned long t; 1510 1511 if (parse_strtoul(buf, 1, &t)) 1512 return -EINVAL; 1513 1514 tpacpi_bluetooth_emulstate = !!t; 1515 1516 return count; 1517 } 1518 static DRIVER_ATTR_RW(bluetooth_emulstate); 1519 1520 /* wwan_emulstate ------------------------------------------------- */ 1521 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1522 { 1523 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate); 1524 } 1525 1526 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1527 size_t count) 1528 { 1529 unsigned long t; 1530 1531 if (parse_strtoul(buf, 1, &t)) 1532 return -EINVAL; 1533 1534 tpacpi_wwan_emulstate = !!t; 1535 1536 return count; 1537 } 1538 static DRIVER_ATTR_RW(wwan_emulstate); 1539 1540 /* uwb_emulstate ------------------------------------------------- */ 1541 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1542 { 1543 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate); 1544 } 1545 1546 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1547 size_t count) 1548 { 1549 unsigned long t; 1550 1551 if (parse_strtoul(buf, 1, &t)) 1552 return -EINVAL; 1553 1554 tpacpi_uwb_emulstate = !!t; 1555 1556 return count; 1557 } 1558 static DRIVER_ATTR_RW(uwb_emulstate); 1559 #endif 1560 1561 /* --------------------------------------------------------------------- */ 1562 1563 static struct driver_attribute *tpacpi_driver_attributes[] = { 1564 &driver_attr_debug_level, &driver_attr_version, 1565 &driver_attr_interface_version, 1566 }; 1567 1568 static int __init tpacpi_create_driver_attributes(struct device_driver *drv) 1569 { 1570 int i, res; 1571 1572 i = 0; 1573 res = 0; 1574 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { 1575 res = driver_create_file(drv, tpacpi_driver_attributes[i]); 1576 i++; 1577 } 1578 1579 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1580 if (!res && dbg_wlswemul) 1581 res = driver_create_file(drv, &driver_attr_wlsw_emulstate); 1582 if (!res && dbg_bluetoothemul) 1583 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); 1584 if (!res && dbg_wwanemul) 1585 res = driver_create_file(drv, &driver_attr_wwan_emulstate); 1586 if (!res && dbg_uwbemul) 1587 res = driver_create_file(drv, &driver_attr_uwb_emulstate); 1588 #endif 1589 1590 return res; 1591 } 1592 1593 static void tpacpi_remove_driver_attributes(struct device_driver *drv) 1594 { 1595 int i; 1596 1597 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) 1598 driver_remove_file(drv, tpacpi_driver_attributes[i]); 1599 1600 #ifdef THINKPAD_ACPI_DEBUGFACILITIES 1601 driver_remove_file(drv, &driver_attr_wlsw_emulstate); 1602 driver_remove_file(drv, &driver_attr_bluetooth_emulstate); 1603 driver_remove_file(drv, &driver_attr_wwan_emulstate); 1604 driver_remove_file(drv, &driver_attr_uwb_emulstate); 1605 #endif 1606 } 1607 1608 /************************************************************************* 1609 * Firmware Data 1610 */ 1611 1612 /* 1613 * Table of recommended minimum BIOS versions 1614 * 1615 * Reasons for listing: 1616 * 1. Stable BIOS, listed because the unknown amount of 1617 * bugs and bad ACPI behaviour on older versions 1618 * 1619 * 2. BIOS or EC fw with known bugs that trigger on Linux 1620 * 1621 * 3. BIOS with known reduced functionality in older versions 1622 * 1623 * We recommend the latest BIOS and EC version. 1624 * We only support the latest BIOS and EC fw version as a rule. 1625 * 1626 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1627 * Information from users in ThinkWiki 1628 * 1629 * WARNING: we use this table also to detect that the machine is 1630 * a ThinkPad in some cases, so don't remove entries lightly. 1631 */ 1632 1633 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1634 { .vendor = (__v), \ 1635 .bios = TPID(__id1, __id2), \ 1636 .ec = TPACPI_MATCH_ANY, \ 1637 .quirks = TPACPI_MATCH_ANY << 16 \ 1638 | (__bv1) << 8 | (__bv2) } 1639 1640 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1641 __eid, __ev1, __ev2) \ 1642 { .vendor = (__v), \ 1643 .bios = TPID(__bid1, __bid2), \ 1644 .ec = __eid, \ 1645 .quirks = (__ev1) << 24 | (__ev2) << 16 \ 1646 | (__bv1) << 8 | (__bv2) } 1647 1648 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1649 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1650 1651 /* Outdated IBM BIOSes often lack the EC id string */ 1652 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1653 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1654 __bv1, __bv2, TPID(__id1, __id2), \ 1655 __ev1, __ev2), \ 1656 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1657 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1658 __ev1, __ev2) 1659 1660 /* Outdated IBM BIOSes often lack the EC id string */ 1661 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1662 __eid1, __eid2, __ev1, __ev2) \ 1663 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1664 __bv1, __bv2, TPID(__eid1, __eid2), \ 1665 __ev1, __ev2), \ 1666 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1667 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1668 __ev1, __ev2) 1669 1670 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1671 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1672 1673 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1674 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1675 __bv1, __bv2, TPID(__id1, __id2), \ 1676 __ev1, __ev2) 1677 1678 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1679 __eid1, __eid2, __ev1, __ev2) \ 1680 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1681 __bv1, __bv2, TPID(__eid1, __eid2), \ 1682 __ev1, __ev2) 1683 1684 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1685 /* Numeric models ------------------ */ 1686 /* FW MODEL BIOS VERS */ 1687 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1688 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1689 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1690 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1691 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1692 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1693 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1694 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1695 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1696 1697 /* A-series ------------------------- */ 1698 /* FW MODEL BIOS VERS EC VERS */ 1699 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1700 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1701 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1702 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1703 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1704 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1705 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1706 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1707 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1708 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1709 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1710 1711 /* G-series ------------------------- */ 1712 /* FW MODEL BIOS VERS */ 1713 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1714 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1715 1716 /* R-series, T-series --------------- */ 1717 /* FW MODEL BIOS VERS EC VERS */ 1718 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1719 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1720 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1721 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1722 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1723 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1724 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1725 T40/p, T41/p, T42/p (1) */ 1726 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1727 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1728 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1729 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1730 1731 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1732 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1733 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1734 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1735 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1736 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1737 1738 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1739 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1740 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1741 1742 /* BIOS FW BIOS VERS EC FW EC VERS */ 1743 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1744 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1745 1746 /* X-series ------------------------- */ 1747 /* FW MODEL BIOS VERS EC VERS */ 1748 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1749 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1750 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1751 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1752 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1753 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1754 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1755 1756 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1757 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1758 1759 /* (0) - older versions lack DMI EC fw string and functionality */ 1760 /* (1) - older versions known to lack functionality */ 1761 }; 1762 1763 #undef TPV_QL1 1764 #undef TPV_QL0 1765 #undef TPV_QI2 1766 #undef TPV_QI1 1767 #undef TPV_QI0 1768 #undef TPV_Q_X 1769 #undef TPV_Q 1770 1771 static void __init tpacpi_check_outdated_fw(void) 1772 { 1773 unsigned long fwvers; 1774 u16 ec_version, bios_version; 1775 1776 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1777 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1778 1779 if (!fwvers) 1780 return; 1781 1782 bios_version = fwvers & 0xffffU; 1783 ec_version = (fwvers >> 16) & 0xffffU; 1784 1785 /* note that unknown versions are set to 0x0000 and we use that */ 1786 if ((bios_version > thinkpad_id.bios_release) || 1787 (ec_version > thinkpad_id.ec_release && 1788 ec_version != TPACPI_MATCH_ANY)) { 1789 /* 1790 * The changelogs would let us track down the exact 1791 * reason, but it is just too much of a pain to track 1792 * it. We only list BIOSes that are either really 1793 * broken, or really stable to begin with, so it is 1794 * best if the user upgrades the firmware anyway. 1795 */ 1796 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1797 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1798 } 1799 } 1800 1801 static bool __init tpacpi_is_fw_known(void) 1802 { 1803 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1804 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1805 } 1806 1807 /**************************************************************************** 1808 **************************************************************************** 1809 * 1810 * Subdrivers 1811 * 1812 **************************************************************************** 1813 ****************************************************************************/ 1814 1815 /************************************************************************* 1816 * thinkpad-acpi metadata subdriver 1817 */ 1818 1819 static int thinkpad_acpi_driver_read(struct seq_file *m) 1820 { 1821 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1822 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1823 return 0; 1824 } 1825 1826 static struct ibm_struct thinkpad_acpi_driver_data = { 1827 .name = "driver", 1828 .read = thinkpad_acpi_driver_read, 1829 }; 1830 1831 /************************************************************************* 1832 * Hotkey subdriver 1833 */ 1834 1835 /* 1836 * ThinkPad firmware event model 1837 * 1838 * The ThinkPad firmware has two main event interfaces: normal ACPI 1839 * notifications (which follow the ACPI standard), and a private event 1840 * interface. 1841 * 1842 * The private event interface also issues events for the hotkeys. As 1843 * the driver gained features, the event handling code ended up being 1844 * built around the hotkey subdriver. This will need to be refactored 1845 * to a more formal event API eventually. 1846 * 1847 * Some "hotkeys" are actually supposed to be used as event reports, 1848 * such as "brightness has changed", "volume has changed", depending on 1849 * the ThinkPad model and how the firmware is operating. 1850 * 1851 * Unlike other classes, hotkey-class events have mask/unmask control on 1852 * non-ancient firmware. However, how it behaves changes a lot with the 1853 * firmware model and version. 1854 */ 1855 1856 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1857 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1858 TP_ACPI_HOTKEYSCAN_FNF2, 1859 TP_ACPI_HOTKEYSCAN_FNF3, 1860 TP_ACPI_HOTKEYSCAN_FNF4, 1861 TP_ACPI_HOTKEYSCAN_FNF5, 1862 TP_ACPI_HOTKEYSCAN_FNF6, 1863 TP_ACPI_HOTKEYSCAN_FNF7, 1864 TP_ACPI_HOTKEYSCAN_FNF8, 1865 TP_ACPI_HOTKEYSCAN_FNF9, 1866 TP_ACPI_HOTKEYSCAN_FNF10, 1867 TP_ACPI_HOTKEYSCAN_FNF11, 1868 TP_ACPI_HOTKEYSCAN_FNF12, 1869 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1870 TP_ACPI_HOTKEYSCAN_FNINSERT, 1871 TP_ACPI_HOTKEYSCAN_FNDELETE, 1872 TP_ACPI_HOTKEYSCAN_FNHOME, 1873 TP_ACPI_HOTKEYSCAN_FNEND, 1874 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1875 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1876 TP_ACPI_HOTKEYSCAN_FNSPACE, 1877 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1878 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1879 TP_ACPI_HOTKEYSCAN_MUTE, 1880 TP_ACPI_HOTKEYSCAN_THINKPAD, 1881 TP_ACPI_HOTKEYSCAN_UNK1, 1882 TP_ACPI_HOTKEYSCAN_UNK2, 1883 TP_ACPI_HOTKEYSCAN_UNK3, 1884 TP_ACPI_HOTKEYSCAN_UNK4, 1885 TP_ACPI_HOTKEYSCAN_UNK5, 1886 TP_ACPI_HOTKEYSCAN_UNK6, 1887 TP_ACPI_HOTKEYSCAN_UNK7, 1888 TP_ACPI_HOTKEYSCAN_UNK8, 1889 1890 /* Adaptive keyboard keycodes */ 1891 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1892 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1893 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1894 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1895 TP_ACPI_HOTKEYSCAN_CLOUD, 1896 TP_ACPI_HOTKEYSCAN_UNK9, 1897 TP_ACPI_HOTKEYSCAN_VOICE, 1898 TP_ACPI_HOTKEYSCAN_UNK10, 1899 TP_ACPI_HOTKEYSCAN_GESTURES, 1900 TP_ACPI_HOTKEYSCAN_UNK11, 1901 TP_ACPI_HOTKEYSCAN_UNK12, 1902 TP_ACPI_HOTKEYSCAN_UNK13, 1903 TP_ACPI_HOTKEYSCAN_CONFIG, 1904 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1905 TP_ACPI_HOTKEYSCAN_RELOAD, 1906 TP_ACPI_HOTKEYSCAN_BACK, 1907 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1908 TP_ACPI_HOTKEYSCAN_MIC_UP, 1909 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1910 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1911 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1912 1913 /* Lenovo extended keymap, starting at 0x1300 */ 1914 TP_ACPI_HOTKEYSCAN_EXTENDED_START, 1915 /* first new observed key (star, favorites) is 0x1311 */ 1916 TP_ACPI_HOTKEYSCAN_STAR = 69, 1917 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1918 TP_ACPI_HOTKEYSCAN_UNK25, 1919 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1920 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1921 1922 /* Hotkey keymap size */ 1923 TPACPI_HOTKEY_MAP_LEN 1924 }; 1925 1926 enum { /* Keys/events available through NVRAM polling */ 1927 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1928 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1929 }; 1930 1931 enum { /* Positions of some of the keys in hotkey masks */ 1932 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1933 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1934 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1935 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1936 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1937 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1938 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1939 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1940 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1941 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1942 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1943 }; 1944 1945 enum { /* NVRAM to ACPI HKEY group map */ 1946 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1947 TP_ACPI_HKEY_ZOOM_MASK | 1948 TP_ACPI_HKEY_DISPSWTCH_MASK | 1949 TP_ACPI_HKEY_HIBERNATE_MASK, 1950 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1951 TP_ACPI_HKEY_BRGHTDWN_MASK, 1952 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1953 TP_ACPI_HKEY_VOLDWN_MASK | 1954 TP_ACPI_HKEY_MUTE_MASK, 1955 }; 1956 1957 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1958 struct tp_nvram_state { 1959 u16 thinkpad_toggle:1; 1960 u16 zoom_toggle:1; 1961 u16 display_toggle:1; 1962 u16 thinklight_toggle:1; 1963 u16 hibernate_toggle:1; 1964 u16 displayexp_toggle:1; 1965 u16 display_state:1; 1966 u16 brightness_toggle:1; 1967 u16 volume_toggle:1; 1968 u16 mute:1; 1969 1970 u8 brightness_level; 1971 u8 volume_level; 1972 }; 1973 1974 /* kthread for the hotkey poller */ 1975 static struct task_struct *tpacpi_hotkey_task; 1976 1977 /* 1978 * Acquire mutex to write poller control variables as an 1979 * atomic block. 1980 * 1981 * Increment hotkey_config_change when changing them if you 1982 * want the kthread to forget old state. 1983 * 1984 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1985 */ 1986 static struct mutex hotkey_thread_data_mutex; 1987 static unsigned int hotkey_config_change; 1988 1989 /* 1990 * hotkey poller control variables 1991 * 1992 * Must be atomic or readers will also need to acquire mutex 1993 * 1994 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1995 * should be used only when the changes need to be taken as 1996 * a block, OR when one needs to force the kthread to forget 1997 * old state. 1998 */ 1999 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 2000 static unsigned int hotkey_poll_freq = 10; /* Hz */ 2001 2002 #define HOTKEY_CONFIG_CRITICAL_START \ 2003 do { \ 2004 mutex_lock(&hotkey_thread_data_mutex); \ 2005 hotkey_config_change++; \ 2006 } while (0); 2007 #define HOTKEY_CONFIG_CRITICAL_END \ 2008 mutex_unlock(&hotkey_thread_data_mutex); 2009 2010 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2011 2012 #define hotkey_source_mask 0U 2013 #define HOTKEY_CONFIG_CRITICAL_START 2014 #define HOTKEY_CONFIG_CRITICAL_END 2015 2016 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2017 2018 static struct mutex hotkey_mutex; 2019 2020 static enum { /* Reasons for waking up */ 2021 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 2022 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 2023 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 2024 } hotkey_wakeup_reason; 2025 2026 static int hotkey_autosleep_ack; 2027 2028 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 2029 static u32 hotkey_all_mask; /* all events supported in fw */ 2030 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 2031 static u32 hotkey_reserved_mask; /* events better left disabled */ 2032 static u32 hotkey_driver_mask; /* events needed by the driver */ 2033 static u32 hotkey_user_mask; /* events visible to userspace */ 2034 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 2035 2036 static u16 *hotkey_keycode_map; 2037 2038 static struct attribute_set *hotkey_dev_attributes; 2039 2040 static void tpacpi_driver_event(const unsigned int hkey_event); 2041 static void hotkey_driver_event(const unsigned int scancode); 2042 static void hotkey_poll_setup(const bool may_warn); 2043 2044 /* HKEY.MHKG() return bits */ 2045 #define TP_HOTKEY_TABLET_MASK (1 << 3) 2046 enum { 2047 TP_ACPI_MULTI_MODE_INVALID = 0, 2048 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 2049 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 2050 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 2051 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 2052 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 2053 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 2054 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 2055 }; 2056 2057 enum { 2058 /* The following modes are considered tablet mode for the purpose of 2059 * reporting the status to userspace. i.e. in all these modes it makes 2060 * sense to disable the laptop input devices such as touchpad and 2061 * keyboard. 2062 */ 2063 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 2064 TP_ACPI_MULTI_MODE_STAND | 2065 TP_ACPI_MULTI_MODE_TENT | 2066 TP_ACPI_MULTI_MODE_STAND_TENT, 2067 }; 2068 2069 static int hotkey_get_wlsw(void) 2070 { 2071 int status; 2072 2073 if (!tp_features.hotkey_wlsw) 2074 return -ENODEV; 2075 2076 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 2077 if (dbg_wlswemul) 2078 return (tpacpi_wlsw_emulstate) ? 2079 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2080 #endif 2081 2082 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 2083 return -EIO; 2084 2085 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2086 } 2087 2088 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 2089 { 2090 int type = (s >> 16) & 0xffff; 2091 int value = s & 0xffff; 2092 int mode = TP_ACPI_MULTI_MODE_INVALID; 2093 int valid_modes = 0; 2094 2095 if (has_tablet_mode) 2096 *has_tablet_mode = 0; 2097 2098 switch (type) { 2099 case 1: 2100 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2101 TP_ACPI_MULTI_MODE_TABLET | 2102 TP_ACPI_MULTI_MODE_STAND_TENT; 2103 break; 2104 case 2: 2105 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2106 TP_ACPI_MULTI_MODE_FLAT | 2107 TP_ACPI_MULTI_MODE_TABLET | 2108 TP_ACPI_MULTI_MODE_STAND | 2109 TP_ACPI_MULTI_MODE_TENT; 2110 break; 2111 case 3: 2112 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2113 TP_ACPI_MULTI_MODE_FLAT; 2114 break; 2115 case 4: 2116 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2117 TP_ACPI_MULTI_MODE_TABLET | 2118 TP_ACPI_MULTI_MODE_STAND | 2119 TP_ACPI_MULTI_MODE_TENT; 2120 break; 2121 case 5: 2122 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2123 TP_ACPI_MULTI_MODE_FLAT | 2124 TP_ACPI_MULTI_MODE_TABLET | 2125 TP_ACPI_MULTI_MODE_STAND | 2126 TP_ACPI_MULTI_MODE_TENT; 2127 break; 2128 default: 2129 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2130 type, value, TPACPI_MAIL); 2131 return 0; 2132 } 2133 2134 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2135 *has_tablet_mode = 1; 2136 2137 switch (value) { 2138 case 1: 2139 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2140 break; 2141 case 2: 2142 mode = TP_ACPI_MULTI_MODE_FLAT; 2143 break; 2144 case 3: 2145 mode = TP_ACPI_MULTI_MODE_TABLET; 2146 break; 2147 case 4: 2148 if (type == 1) 2149 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2150 else 2151 mode = TP_ACPI_MULTI_MODE_STAND; 2152 break; 2153 case 5: 2154 mode = TP_ACPI_MULTI_MODE_TENT; 2155 break; 2156 default: 2157 if (type == 5 && value == 0xffff) { 2158 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2159 return 0; 2160 } 2161 } 2162 2163 if (!(mode & valid_modes)) { 2164 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2165 value, type, TPACPI_MAIL); 2166 return 0; 2167 } 2168 2169 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2170 } 2171 2172 static int hotkey_get_tablet_mode(int *status) 2173 { 2174 int s; 2175 2176 switch (tp_features.hotkey_tablet) { 2177 case TP_HOTKEY_TABLET_USES_MHKG: 2178 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2179 return -EIO; 2180 2181 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2182 break; 2183 case TP_HOTKEY_TABLET_USES_GMMS: 2184 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2185 return -EIO; 2186 2187 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2188 break; 2189 default: 2190 break; 2191 } 2192 2193 return 0; 2194 } 2195 2196 /* 2197 * Reads current event mask from firmware, and updates 2198 * hotkey_acpi_mask accordingly. Also resets any bits 2199 * from hotkey_user_mask that are unavailable to be 2200 * delivered (shadow requirement of the userspace ABI). 2201 * 2202 * Call with hotkey_mutex held 2203 */ 2204 static int hotkey_mask_get(void) 2205 { 2206 if (tp_features.hotkey_mask) { 2207 u32 m = 0; 2208 2209 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2210 return -EIO; 2211 2212 hotkey_acpi_mask = m; 2213 } else { 2214 /* no mask support doesn't mean no event support... */ 2215 hotkey_acpi_mask = hotkey_all_mask; 2216 } 2217 2218 /* sync userspace-visible mask */ 2219 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2220 2221 return 0; 2222 } 2223 2224 static void hotkey_mask_warn_incomplete_mask(void) 2225 { 2226 /* log only what the user can fix... */ 2227 const u32 wantedmask = hotkey_driver_mask & 2228 ~(hotkey_acpi_mask | hotkey_source_mask) & 2229 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2230 2231 if (wantedmask) 2232 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2233 } 2234 2235 /* 2236 * Set the firmware mask when supported 2237 * 2238 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2239 * 2240 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2241 * 2242 * Call with hotkey_mutex held 2243 */ 2244 static int hotkey_mask_set(u32 mask) 2245 { 2246 int i; 2247 int rc = 0; 2248 2249 const u32 fwmask = mask & ~hotkey_source_mask; 2250 2251 if (tp_features.hotkey_mask) { 2252 for (i = 0; i < 32; i++) { 2253 if (!acpi_evalf(hkey_handle, 2254 NULL, "MHKM", "vdd", i + 1, 2255 !!(mask & (1 << i)))) { 2256 rc = -EIO; 2257 break; 2258 } 2259 } 2260 } 2261 2262 /* 2263 * We *must* make an inconditional call to hotkey_mask_get to 2264 * refresh hotkey_acpi_mask and update hotkey_user_mask 2265 * 2266 * Take the opportunity to also log when we cannot _enable_ 2267 * a given event. 2268 */ 2269 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2270 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2271 fwmask, hotkey_acpi_mask); 2272 } 2273 2274 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2275 hotkey_mask_warn_incomplete_mask(); 2276 2277 return rc; 2278 } 2279 2280 /* 2281 * Sets hotkey_user_mask and tries to set the firmware mask 2282 * 2283 * Call with hotkey_mutex held 2284 */ 2285 static int hotkey_user_mask_set(const u32 mask) 2286 { 2287 int rc; 2288 2289 /* Give people a chance to notice they are doing something that 2290 * is bound to go boom on their users sooner or later */ 2291 if (!tp_warned.hotkey_mask_ff && 2292 (mask == 0xffff || mask == 0xffffff || 2293 mask == 0xffffffff)) { 2294 tp_warned.hotkey_mask_ff = 1; 2295 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2296 mask); 2297 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2298 } 2299 2300 /* Try to enable what the user asked for, plus whatever we need. 2301 * this syncs everything but won't enable bits in hotkey_user_mask */ 2302 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2303 2304 /* Enable the available bits in hotkey_user_mask */ 2305 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2306 2307 return rc; 2308 } 2309 2310 /* 2311 * Sets the driver hotkey mask. 2312 * 2313 * Can be called even if the hotkey subdriver is inactive 2314 */ 2315 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2316 { 2317 int rc; 2318 2319 /* Do the right thing if hotkey_init has not been called yet */ 2320 if (!tp_features.hotkey) { 2321 hotkey_driver_mask = mask; 2322 return 0; 2323 } 2324 2325 mutex_lock(&hotkey_mutex); 2326 2327 HOTKEY_CONFIG_CRITICAL_START 2328 hotkey_driver_mask = mask; 2329 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2330 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2331 #endif 2332 HOTKEY_CONFIG_CRITICAL_END 2333 2334 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2335 ~hotkey_source_mask); 2336 hotkey_poll_setup(true); 2337 2338 mutex_unlock(&hotkey_mutex); 2339 2340 return rc; 2341 } 2342 2343 static int hotkey_status_get(int *status) 2344 { 2345 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2346 return -EIO; 2347 2348 return 0; 2349 } 2350 2351 static int hotkey_status_set(bool enable) 2352 { 2353 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2354 return -EIO; 2355 2356 return 0; 2357 } 2358 2359 static void tpacpi_input_send_tabletsw(void) 2360 { 2361 int state; 2362 2363 if (tp_features.hotkey_tablet && 2364 !hotkey_get_tablet_mode(&state)) { 2365 mutex_lock(&tpacpi_inputdev_send_mutex); 2366 2367 input_report_switch(tpacpi_inputdev, 2368 SW_TABLET_MODE, !!state); 2369 input_sync(tpacpi_inputdev); 2370 2371 mutex_unlock(&tpacpi_inputdev_send_mutex); 2372 } 2373 } 2374 2375 /* Do NOT call without validating scancode first */ 2376 static void tpacpi_input_send_key(const unsigned int scancode) 2377 { 2378 const unsigned int keycode = hotkey_keycode_map[scancode]; 2379 2380 if (keycode != KEY_RESERVED) { 2381 mutex_lock(&tpacpi_inputdev_send_mutex); 2382 2383 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2384 input_report_key(tpacpi_inputdev, keycode, 1); 2385 input_sync(tpacpi_inputdev); 2386 2387 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); 2388 input_report_key(tpacpi_inputdev, keycode, 0); 2389 input_sync(tpacpi_inputdev); 2390 2391 mutex_unlock(&tpacpi_inputdev_send_mutex); 2392 } 2393 } 2394 2395 /* Do NOT call without validating scancode first */ 2396 static void tpacpi_input_send_key_masked(const unsigned int scancode) 2397 { 2398 hotkey_driver_event(scancode); 2399 if (hotkey_user_mask & (1 << scancode)) 2400 tpacpi_input_send_key(scancode); 2401 } 2402 2403 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2404 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2405 2406 /* Do NOT call without validating scancode first */ 2407 static void tpacpi_hotkey_send_key(unsigned int scancode) 2408 { 2409 tpacpi_input_send_key_masked(scancode); 2410 } 2411 2412 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2413 { 2414 u8 d; 2415 2416 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2417 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2418 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2419 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2420 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2421 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2422 } 2423 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2424 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2425 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2426 } 2427 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2428 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2429 n->displayexp_toggle = 2430 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2431 } 2432 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2433 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2434 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2435 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2436 n->brightness_toggle = 2437 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2438 } 2439 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2440 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2441 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2442 >> TP_NVRAM_POS_LEVEL_VOLUME; 2443 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2444 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2445 } 2446 } 2447 2448 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2449 do { \ 2450 if ((event_mask & (1 << __scancode)) && \ 2451 oldn->__member != newn->__member) \ 2452 tpacpi_hotkey_send_key(__scancode); \ 2453 } while (0) 2454 2455 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2456 do { \ 2457 if (event_mask & (1 << __scancode)) \ 2458 tpacpi_hotkey_send_key(__scancode); \ 2459 } while (0) 2460 2461 static void issue_volchange(const unsigned int oldvol, 2462 const unsigned int newvol, 2463 const u32 event_mask) 2464 { 2465 unsigned int i = oldvol; 2466 2467 while (i > newvol) { 2468 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2469 i--; 2470 } 2471 while (i < newvol) { 2472 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2473 i++; 2474 } 2475 } 2476 2477 static void issue_brightnesschange(const unsigned int oldbrt, 2478 const unsigned int newbrt, 2479 const u32 event_mask) 2480 { 2481 unsigned int i = oldbrt; 2482 2483 while (i > newbrt) { 2484 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2485 i--; 2486 } 2487 while (i < newbrt) { 2488 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2489 i++; 2490 } 2491 } 2492 2493 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2494 struct tp_nvram_state *newn, 2495 const u32 event_mask) 2496 { 2497 2498 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2499 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2500 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2501 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2502 2503 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2504 2505 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2506 2507 /* 2508 * Handle volume 2509 * 2510 * This code is supposed to duplicate the IBM firmware behaviour: 2511 * - Pressing MUTE issues mute hotkey message, even when already mute 2512 * - Pressing Volume up/down issues volume up/down hotkey messages, 2513 * even when already at maximum or minimum volume 2514 * - The act of unmuting issues volume up/down notification, 2515 * depending which key was used to unmute 2516 * 2517 * We are constrained to what the NVRAM can tell us, which is not much 2518 * and certainly not enough if more than one volume hotkey was pressed 2519 * since the last poll cycle. 2520 * 2521 * Just to make our life interesting, some newer Lenovo ThinkPads have 2522 * bugs in the BIOS and may fail to update volume_toggle properly. 2523 */ 2524 if (newn->mute) { 2525 /* muted */ 2526 if (!oldn->mute || 2527 oldn->volume_toggle != newn->volume_toggle || 2528 oldn->volume_level != newn->volume_level) { 2529 /* recently muted, or repeated mute keypress, or 2530 * multiple presses ending in mute */ 2531 issue_volchange(oldn->volume_level, newn->volume_level, 2532 event_mask); 2533 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2534 } 2535 } else { 2536 /* unmute */ 2537 if (oldn->mute) { 2538 /* recently unmuted, issue 'unmute' keypress */ 2539 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2540 } 2541 if (oldn->volume_level != newn->volume_level) { 2542 issue_volchange(oldn->volume_level, newn->volume_level, 2543 event_mask); 2544 } else if (oldn->volume_toggle != newn->volume_toggle) { 2545 /* repeated vol up/down keypress at end of scale ? */ 2546 if (newn->volume_level == 0) 2547 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2548 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2549 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2550 } 2551 } 2552 2553 /* handle brightness */ 2554 if (oldn->brightness_level != newn->brightness_level) { 2555 issue_brightnesschange(oldn->brightness_level, 2556 newn->brightness_level, event_mask); 2557 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2558 /* repeated key presses that didn't change state */ 2559 if (newn->brightness_level == 0) 2560 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2561 else if (newn->brightness_level >= bright_maxlvl 2562 && !tp_features.bright_unkfw) 2563 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2564 } 2565 2566 #undef TPACPI_COMPARE_KEY 2567 #undef TPACPI_MAY_SEND_KEY 2568 } 2569 2570 /* 2571 * Polling driver 2572 * 2573 * We track all events in hotkey_source_mask all the time, since 2574 * most of them are edge-based. We only issue those requested by 2575 * hotkey_user_mask or hotkey_driver_mask, though. 2576 */ 2577 static int hotkey_kthread(void *data) 2578 { 2579 struct tp_nvram_state s[2]; 2580 u32 poll_mask, event_mask; 2581 unsigned int si, so; 2582 unsigned long t; 2583 unsigned int change_detector; 2584 unsigned int poll_freq; 2585 bool was_frozen; 2586 2587 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2588 goto exit; 2589 2590 set_freezable(); 2591 2592 so = 0; 2593 si = 1; 2594 t = 0; 2595 2596 /* Initial state for compares */ 2597 mutex_lock(&hotkey_thread_data_mutex); 2598 change_detector = hotkey_config_change; 2599 poll_mask = hotkey_source_mask; 2600 event_mask = hotkey_source_mask & 2601 (hotkey_driver_mask | hotkey_user_mask); 2602 poll_freq = hotkey_poll_freq; 2603 mutex_unlock(&hotkey_thread_data_mutex); 2604 hotkey_read_nvram(&s[so], poll_mask); 2605 2606 while (!kthread_should_stop()) { 2607 if (t == 0) { 2608 if (likely(poll_freq)) 2609 t = 1000/poll_freq; 2610 else 2611 t = 100; /* should never happen... */ 2612 } 2613 t = msleep_interruptible(t); 2614 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2615 break; 2616 2617 if (t > 0 && !was_frozen) 2618 continue; 2619 2620 mutex_lock(&hotkey_thread_data_mutex); 2621 if (was_frozen || hotkey_config_change != change_detector) { 2622 /* forget old state on thaw or config change */ 2623 si = so; 2624 t = 0; 2625 change_detector = hotkey_config_change; 2626 } 2627 poll_mask = hotkey_source_mask; 2628 event_mask = hotkey_source_mask & 2629 (hotkey_driver_mask | hotkey_user_mask); 2630 poll_freq = hotkey_poll_freq; 2631 mutex_unlock(&hotkey_thread_data_mutex); 2632 2633 if (likely(poll_mask)) { 2634 hotkey_read_nvram(&s[si], poll_mask); 2635 if (likely(si != so)) { 2636 hotkey_compare_and_issue_event(&s[so], &s[si], 2637 event_mask); 2638 } 2639 } 2640 2641 so = si; 2642 si ^= 1; 2643 } 2644 2645 exit: 2646 return 0; 2647 } 2648 2649 /* call with hotkey_mutex held */ 2650 static void hotkey_poll_stop_sync(void) 2651 { 2652 if (tpacpi_hotkey_task) { 2653 kthread_stop(tpacpi_hotkey_task); 2654 tpacpi_hotkey_task = NULL; 2655 } 2656 } 2657 2658 /* call with hotkey_mutex held */ 2659 static void hotkey_poll_setup(const bool may_warn) 2660 { 2661 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2662 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2663 2664 if (hotkey_poll_freq > 0 && 2665 (poll_driver_mask || 2666 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2667 if (!tpacpi_hotkey_task) { 2668 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2669 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2670 if (IS_ERR(tpacpi_hotkey_task)) { 2671 tpacpi_hotkey_task = NULL; 2672 pr_err("could not create kernel thread for hotkey polling\n"); 2673 } 2674 } 2675 } else { 2676 hotkey_poll_stop_sync(); 2677 if (may_warn && (poll_driver_mask || poll_user_mask) && 2678 hotkey_poll_freq == 0) { 2679 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2680 poll_user_mask, poll_driver_mask); 2681 } 2682 } 2683 } 2684 2685 static void hotkey_poll_setup_safe(const bool may_warn) 2686 { 2687 mutex_lock(&hotkey_mutex); 2688 hotkey_poll_setup(may_warn); 2689 mutex_unlock(&hotkey_mutex); 2690 } 2691 2692 /* call with hotkey_mutex held */ 2693 static void hotkey_poll_set_freq(unsigned int freq) 2694 { 2695 if (!freq) 2696 hotkey_poll_stop_sync(); 2697 2698 hotkey_poll_freq = freq; 2699 } 2700 2701 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2702 2703 static void hotkey_poll_setup(const bool __unused) 2704 { 2705 } 2706 2707 static void hotkey_poll_setup_safe(const bool __unused) 2708 { 2709 } 2710 2711 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2712 2713 static int hotkey_inputdev_open(struct input_dev *dev) 2714 { 2715 switch (tpacpi_lifecycle) { 2716 case TPACPI_LIFE_INIT: 2717 case TPACPI_LIFE_RUNNING: 2718 hotkey_poll_setup_safe(false); 2719 return 0; 2720 case TPACPI_LIFE_EXITING: 2721 return -EBUSY; 2722 } 2723 2724 /* Should only happen if tpacpi_lifecycle is corrupt */ 2725 BUG(); 2726 return -EBUSY; 2727 } 2728 2729 static void hotkey_inputdev_close(struct input_dev *dev) 2730 { 2731 /* disable hotkey polling when possible */ 2732 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2733 !(hotkey_source_mask & hotkey_driver_mask)) 2734 hotkey_poll_setup_safe(false); 2735 } 2736 2737 /* sysfs hotkey enable ------------------------------------------------- */ 2738 static ssize_t hotkey_enable_show(struct device *dev, 2739 struct device_attribute *attr, 2740 char *buf) 2741 { 2742 int res, status; 2743 2744 printk_deprecated_attribute("hotkey_enable", 2745 "Hotkey reporting is always enabled"); 2746 2747 res = hotkey_status_get(&status); 2748 if (res) 2749 return res; 2750 2751 return snprintf(buf, PAGE_SIZE, "%d\n", status); 2752 } 2753 2754 static ssize_t hotkey_enable_store(struct device *dev, 2755 struct device_attribute *attr, 2756 const char *buf, size_t count) 2757 { 2758 unsigned long t; 2759 2760 printk_deprecated_attribute("hotkey_enable", 2761 "Hotkeys can be disabled through hotkey_mask"); 2762 2763 if (parse_strtoul(buf, 1, &t)) 2764 return -EINVAL; 2765 2766 if (t == 0) 2767 return -EPERM; 2768 2769 return count; 2770 } 2771 2772 static DEVICE_ATTR_RW(hotkey_enable); 2773 2774 /* sysfs hotkey mask --------------------------------------------------- */ 2775 static ssize_t hotkey_mask_show(struct device *dev, 2776 struct device_attribute *attr, 2777 char *buf) 2778 { 2779 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask); 2780 } 2781 2782 static ssize_t hotkey_mask_store(struct device *dev, 2783 struct device_attribute *attr, 2784 const char *buf, size_t count) 2785 { 2786 unsigned long t; 2787 int res; 2788 2789 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2790 return -EINVAL; 2791 2792 if (mutex_lock_killable(&hotkey_mutex)) 2793 return -ERESTARTSYS; 2794 2795 res = hotkey_user_mask_set(t); 2796 2797 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2798 hotkey_poll_setup(true); 2799 #endif 2800 2801 mutex_unlock(&hotkey_mutex); 2802 2803 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2804 2805 return (res) ? res : count; 2806 } 2807 2808 static DEVICE_ATTR_RW(hotkey_mask); 2809 2810 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2811 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2812 struct device_attribute *attr, 2813 char *buf) 2814 { 2815 return sprintf(buf, "0\n"); 2816 } 2817 2818 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2819 2820 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2821 static ssize_t hotkey_bios_mask_show(struct device *dev, 2822 struct device_attribute *attr, 2823 char *buf) 2824 { 2825 printk_deprecated_attribute("hotkey_bios_mask", 2826 "This attribute is useless."); 2827 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); 2828 } 2829 2830 static DEVICE_ATTR_RO(hotkey_bios_mask); 2831 2832 /* sysfs hotkey all_mask ----------------------------------------------- */ 2833 static ssize_t hotkey_all_mask_show(struct device *dev, 2834 struct device_attribute *attr, 2835 char *buf) 2836 { 2837 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2838 hotkey_all_mask | hotkey_source_mask); 2839 } 2840 2841 static DEVICE_ATTR_RO(hotkey_all_mask); 2842 2843 /* sysfs hotkey all_mask ----------------------------------------------- */ 2844 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2845 struct device_attribute *attr, 2846 char *buf) 2847 { 2848 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2849 hotkey_adaptive_all_mask | hotkey_source_mask); 2850 } 2851 2852 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2853 2854 /* sysfs hotkey recommended_mask --------------------------------------- */ 2855 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2856 struct device_attribute *attr, 2857 char *buf) 2858 { 2859 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2860 (hotkey_all_mask | hotkey_source_mask) 2861 & ~hotkey_reserved_mask); 2862 } 2863 2864 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2865 2866 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2867 2868 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2869 static ssize_t hotkey_source_mask_show(struct device *dev, 2870 struct device_attribute *attr, 2871 char *buf) 2872 { 2873 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); 2874 } 2875 2876 static ssize_t hotkey_source_mask_store(struct device *dev, 2877 struct device_attribute *attr, 2878 const char *buf, size_t count) 2879 { 2880 unsigned long t; 2881 u32 r_ev; 2882 int rc; 2883 2884 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2885 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2886 return -EINVAL; 2887 2888 if (mutex_lock_killable(&hotkey_mutex)) 2889 return -ERESTARTSYS; 2890 2891 HOTKEY_CONFIG_CRITICAL_START 2892 hotkey_source_mask = t; 2893 HOTKEY_CONFIG_CRITICAL_END 2894 2895 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2896 ~hotkey_source_mask); 2897 hotkey_poll_setup(true); 2898 2899 /* check if events needed by the driver got disabled */ 2900 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2901 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2902 2903 mutex_unlock(&hotkey_mutex); 2904 2905 if (rc < 0) 2906 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2907 2908 if (r_ev) 2909 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2910 r_ev); 2911 2912 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2913 2914 return (rc < 0) ? rc : count; 2915 } 2916 2917 static DEVICE_ATTR_RW(hotkey_source_mask); 2918 2919 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2920 static ssize_t hotkey_poll_freq_show(struct device *dev, 2921 struct device_attribute *attr, 2922 char *buf) 2923 { 2924 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); 2925 } 2926 2927 static ssize_t hotkey_poll_freq_store(struct device *dev, 2928 struct device_attribute *attr, 2929 const char *buf, size_t count) 2930 { 2931 unsigned long t; 2932 2933 if (parse_strtoul(buf, 25, &t)) 2934 return -EINVAL; 2935 2936 if (mutex_lock_killable(&hotkey_mutex)) 2937 return -ERESTARTSYS; 2938 2939 hotkey_poll_set_freq(t); 2940 hotkey_poll_setup(true); 2941 2942 mutex_unlock(&hotkey_mutex); 2943 2944 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2945 2946 return count; 2947 } 2948 2949 static DEVICE_ATTR_RW(hotkey_poll_freq); 2950 2951 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2952 2953 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2954 static ssize_t hotkey_radio_sw_show(struct device *dev, 2955 struct device_attribute *attr, 2956 char *buf) 2957 { 2958 int res; 2959 res = hotkey_get_wlsw(); 2960 if (res < 0) 2961 return res; 2962 2963 /* Opportunistic update */ 2964 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2965 2966 return snprintf(buf, PAGE_SIZE, "%d\n", 2967 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2968 } 2969 2970 static DEVICE_ATTR_RO(hotkey_radio_sw); 2971 2972 static void hotkey_radio_sw_notify_change(void) 2973 { 2974 if (tp_features.hotkey_wlsw) 2975 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2976 "hotkey_radio_sw"); 2977 } 2978 2979 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2980 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2981 struct device_attribute *attr, 2982 char *buf) 2983 { 2984 int res, s; 2985 res = hotkey_get_tablet_mode(&s); 2986 if (res < 0) 2987 return res; 2988 2989 return snprintf(buf, PAGE_SIZE, "%d\n", !!s); 2990 } 2991 2992 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2993 2994 static void hotkey_tablet_mode_notify_change(void) 2995 { 2996 if (tp_features.hotkey_tablet) 2997 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2998 "hotkey_tablet_mode"); 2999 } 3000 3001 /* sysfs wakeup reason (pollable) -------------------------------------- */ 3002 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 3003 struct device_attribute *attr, 3004 char *buf) 3005 { 3006 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); 3007 } 3008 3009 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 3010 3011 static void hotkey_wakeup_reason_notify_change(void) 3012 { 3013 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3014 "wakeup_reason"); 3015 } 3016 3017 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 3018 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 3019 struct device_attribute *attr, 3020 char *buf) 3021 { 3022 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); 3023 } 3024 3025 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 3026 hotkey_wakeup_hotunplug_complete_show, NULL); 3027 3028 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 3029 { 3030 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 3031 "wakeup_hotunplug_complete"); 3032 } 3033 3034 /* sysfs adaptive kbd mode --------------------------------------------- */ 3035 3036 static int adaptive_keyboard_get_mode(void); 3037 static int adaptive_keyboard_set_mode(int new_mode); 3038 3039 enum ADAPTIVE_KEY_MODE { 3040 HOME_MODE, 3041 WEB_BROWSER_MODE, 3042 WEB_CONFERENCE_MODE, 3043 FUNCTION_MODE, 3044 LAYFLAT_MODE 3045 }; 3046 3047 static ssize_t adaptive_kbd_mode_show(struct device *dev, 3048 struct device_attribute *attr, 3049 char *buf) 3050 { 3051 int current_mode; 3052 3053 current_mode = adaptive_keyboard_get_mode(); 3054 if (current_mode < 0) 3055 return current_mode; 3056 3057 return snprintf(buf, PAGE_SIZE, "%d\n", current_mode); 3058 } 3059 3060 static ssize_t adaptive_kbd_mode_store(struct device *dev, 3061 struct device_attribute *attr, 3062 const char *buf, size_t count) 3063 { 3064 unsigned long t; 3065 int res; 3066 3067 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 3068 return -EINVAL; 3069 3070 res = adaptive_keyboard_set_mode(t); 3071 return (res < 0) ? res : count; 3072 } 3073 3074 static DEVICE_ATTR_RW(adaptive_kbd_mode); 3075 3076 static struct attribute *adaptive_kbd_attributes[] = { 3077 &dev_attr_adaptive_kbd_mode.attr, 3078 NULL 3079 }; 3080 3081 static const struct attribute_group adaptive_kbd_attr_group = { 3082 .attrs = adaptive_kbd_attributes, 3083 }; 3084 3085 /* --------------------------------------------------------------------- */ 3086 3087 static struct attribute *hotkey_attributes[] __initdata = { 3088 &dev_attr_hotkey_enable.attr, 3089 &dev_attr_hotkey_bios_enabled.attr, 3090 &dev_attr_hotkey_bios_mask.attr, 3091 &dev_attr_wakeup_reason.attr, 3092 &dev_attr_wakeup_hotunplug_complete.attr, 3093 &dev_attr_hotkey_mask.attr, 3094 &dev_attr_hotkey_all_mask.attr, 3095 &dev_attr_hotkey_adaptive_all_mask.attr, 3096 &dev_attr_hotkey_recommended_mask.attr, 3097 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3098 &dev_attr_hotkey_source_mask.attr, 3099 &dev_attr_hotkey_poll_freq.attr, 3100 #endif 3101 }; 3102 3103 /* 3104 * Sync both the hw and sw blocking state of all switches 3105 */ 3106 static void tpacpi_send_radiosw_update(void) 3107 { 3108 int wlsw; 3109 3110 /* 3111 * We must sync all rfkill controllers *before* issuing any 3112 * rfkill input events, or we will race the rfkill core input 3113 * handler. 3114 * 3115 * tpacpi_inputdev_send_mutex works as a synchronization point 3116 * for the above. 3117 * 3118 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3119 */ 3120 3121 wlsw = hotkey_get_wlsw(); 3122 3123 /* Sync hw blocking state first if it is hw-blocked */ 3124 if (wlsw == TPACPI_RFK_RADIO_OFF) 3125 tpacpi_rfk_update_hwblock_state(true); 3126 3127 /* Sync sw blocking state */ 3128 tpacpi_rfk_update_swstate_all(); 3129 3130 /* Sync hw blocking state last if it is hw-unblocked */ 3131 if (wlsw == TPACPI_RFK_RADIO_ON) 3132 tpacpi_rfk_update_hwblock_state(false); 3133 3134 /* Issue rfkill input event for WLSW switch */ 3135 if (!(wlsw < 0)) { 3136 mutex_lock(&tpacpi_inputdev_send_mutex); 3137 3138 input_report_switch(tpacpi_inputdev, 3139 SW_RFKILL_ALL, (wlsw > 0)); 3140 input_sync(tpacpi_inputdev); 3141 3142 mutex_unlock(&tpacpi_inputdev_send_mutex); 3143 } 3144 3145 /* 3146 * this can be unconditional, as we will poll state again 3147 * if userspace uses the notify to read data 3148 */ 3149 hotkey_radio_sw_notify_change(); 3150 } 3151 3152 static void hotkey_exit(void) 3153 { 3154 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3155 mutex_lock(&hotkey_mutex); 3156 hotkey_poll_stop_sync(); 3157 mutex_unlock(&hotkey_mutex); 3158 #endif 3159 3160 if (hotkey_dev_attributes) 3161 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3162 3163 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3164 "restoring original HKEY status and mask\n"); 3165 /* yes, there is a bitwise or below, we want the 3166 * functions to be called even if one of them fail */ 3167 if (((tp_features.hotkey_mask && 3168 hotkey_mask_set(hotkey_orig_mask)) | 3169 hotkey_status_set(false)) != 0) 3170 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3171 } 3172 3173 static void __init hotkey_unmap(const unsigned int scancode) 3174 { 3175 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3176 clear_bit(hotkey_keycode_map[scancode], 3177 tpacpi_inputdev->keybit); 3178 hotkey_keycode_map[scancode] = KEY_RESERVED; 3179 } 3180 } 3181 3182 /* 3183 * HKEY quirks: 3184 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3185 */ 3186 3187 #define TPACPI_HK_Q_INIMASK 0x0001 3188 3189 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3190 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3191 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3192 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3193 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3194 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3195 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3196 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3197 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3198 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3199 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3200 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3201 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3202 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3203 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3204 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3205 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3206 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3207 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3208 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3209 }; 3210 3211 typedef u16 tpacpi_keymap_entry_t; 3212 typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN]; 3213 3214 static int hotkey_init_tablet_mode(void) 3215 { 3216 int in_tablet_mode = 0, res; 3217 char *type = NULL; 3218 3219 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3220 int has_tablet_mode; 3221 3222 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3223 &has_tablet_mode); 3224 if (has_tablet_mode) 3225 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3226 type = "GMMS"; 3227 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3228 /* For X41t, X60t, X61t Tablets... */ 3229 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3230 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3231 type = "MHKG"; 3232 } 3233 3234 if (!tp_features.hotkey_tablet) 3235 return 0; 3236 3237 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3238 type, in_tablet_mode ? "tablet" : "laptop"); 3239 3240 res = add_to_attr_set(hotkey_dev_attributes, 3241 &dev_attr_hotkey_tablet_mode.attr); 3242 if (res) 3243 return -1; 3244 3245 return in_tablet_mode; 3246 } 3247 3248 static int __init hotkey_init(struct ibm_init_struct *iibm) 3249 { 3250 /* Requirements for changing the default keymaps: 3251 * 3252 * 1. Many of the keys are mapped to KEY_RESERVED for very 3253 * good reasons. Do not change them unless you have deep 3254 * knowledge on the IBM and Lenovo ThinkPad firmware for 3255 * the various ThinkPad models. The driver behaves 3256 * differently for KEY_RESERVED: such keys have their 3257 * hot key mask *unset* in mask_recommended, and also 3258 * in the initial hot key mask programmed into the 3259 * firmware at driver load time, which means the firm- 3260 * ware may react very differently if you change them to 3261 * something else; 3262 * 3263 * 2. You must be subscribed to the linux-thinkpad and 3264 * ibm-acpi-devel mailing lists, and you should read the 3265 * list archives since 2007 if you want to change the 3266 * keymaps. This requirement exists so that you will 3267 * know the past history of problems with the thinkpad- 3268 * acpi driver keymaps, and also that you will be 3269 * listening to any bug reports; 3270 * 3271 * 3. Do not send thinkpad-acpi specific patches directly to 3272 * for merging, *ever*. Send them to the linux-acpi 3273 * mailinglist for comments. Merging is to be done only 3274 * through acpi-test and the ACPI maintainer. 3275 * 3276 * If the above is too much to ask, don't change the keymap. 3277 * Ask the thinkpad-acpi maintainer to do it, instead. 3278 */ 3279 3280 enum keymap_index { 3281 TPACPI_KEYMAP_IBM_GENERIC = 0, 3282 TPACPI_KEYMAP_LENOVO_GENERIC, 3283 }; 3284 3285 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = { 3286 /* Generic keymap for IBM ThinkPads */ 3287 [TPACPI_KEYMAP_IBM_GENERIC] = { 3288 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3289 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP, 3290 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3291 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3292 3293 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3294 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3295 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3296 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3297 3298 /* brightness: firmware always reacts to them */ 3299 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3300 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3301 3302 /* Thinklight: firmware always react to it */ 3303 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3304 3305 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3306 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3307 3308 /* Volume: firmware always react to it and reprograms 3309 * the built-in *extra* mixer. Never map it to control 3310 * another mixer by default. */ 3311 KEY_RESERVED, /* 0x14: VOLUME UP */ 3312 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3313 KEY_RESERVED, /* 0x16: MUTE */ 3314 3315 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3316 3317 /* (assignments unknown, please report if found) */ 3318 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3319 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3320 3321 /* No assignments, only used for Adaptive keyboards. */ 3322 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3323 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3324 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3325 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3326 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3327 3328 /* No assignment, used for newer Lenovo models */ 3329 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3330 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3331 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3332 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3333 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3334 KEY_UNKNOWN, KEY_UNKNOWN 3335 3336 }, 3337 3338 /* Generic keymap for Lenovo ThinkPads */ 3339 [TPACPI_KEYMAP_LENOVO_GENERIC] = { 3340 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3341 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3342 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3343 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3344 3345 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3346 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3347 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3348 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3349 3350 /* These should be enabled --only-- when ACPI video 3351 * is disabled (i.e. in "vendor" mode), and are handled 3352 * in a special way by the init code */ 3353 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3354 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3355 3356 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3357 3358 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3359 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3360 3361 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3362 * react to it and reprograms the built-in *extra* mixer. 3363 * Never map it to control another mixer by default. 3364 * 3365 * T60?, T61, R60?, R61: firmware and EC tries to send 3366 * these over the regular keyboard, so these are no-ops, 3367 * but there are still weird bugs re. MUTE, so do not 3368 * change unless you get test reports from all Lenovo 3369 * models. May cause the BIOS to interfere with the 3370 * HDA mixer. 3371 */ 3372 KEY_RESERVED, /* 0x14: VOLUME UP */ 3373 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3374 KEY_RESERVED, /* 0x16: MUTE */ 3375 3376 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3377 3378 /* (assignments unknown, please report if found) */ 3379 KEY_UNKNOWN, KEY_UNKNOWN, 3380 3381 /* 3382 * The mic mute button only sends 0x1a. It does not 3383 * automatically mute the mic or change the mute light. 3384 */ 3385 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */ 3386 3387 /* (assignments unknown, please report if found) */ 3388 KEY_UNKNOWN, 3389 3390 /* Extra keys in use since the X240 / T440 / T540 */ 3391 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE, 3392 3393 /* 3394 * These are the adaptive keyboard keycodes for Carbon X1 2014. 3395 * The first item in this list is the Mute button which is 3396 * emitted with 0x103 through 3397 * adaptive_keyboard_hotkey_notify_hotkey() when the sound 3398 * symbol is held. 3399 * We'll need to offset those by 0x20. 3400 */ 3401 KEY_RESERVED, /* Mute held, 0x103 */ 3402 KEY_BRIGHTNESS_MIN, /* Backlight off */ 3403 KEY_RESERVED, /* Clipping tool */ 3404 KEY_RESERVED, /* Cloud */ 3405 KEY_RESERVED, 3406 KEY_VOICECOMMAND, /* Voice */ 3407 KEY_RESERVED, 3408 KEY_RESERVED, /* Gestures */ 3409 KEY_RESERVED, 3410 KEY_RESERVED, 3411 KEY_RESERVED, 3412 KEY_CONFIG, /* Settings */ 3413 KEY_RESERVED, /* New tab */ 3414 KEY_REFRESH, /* Reload */ 3415 KEY_BACK, /* Back */ 3416 KEY_RESERVED, /* Microphone down */ 3417 KEY_RESERVED, /* Microphone up */ 3418 KEY_RESERVED, /* Microphone cancellation */ 3419 KEY_RESERVED, /* Camera mode */ 3420 KEY_RESERVED, /* Rotate display, 0x116 */ 3421 3422 /* 3423 * These are found in 2017 models (e.g. T470s, X270). 3424 * The lowest known value is 0x311, which according to 3425 * the manual should launch a user defined favorite 3426 * application. 3427 * 3428 * The offset for these is TP_ACPI_HOTKEYSCAN_EXTENDED_START, 3429 * corresponding to 0x34. 3430 */ 3431 3432 /* (assignments unknown, please report if found) */ 3433 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3434 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3435 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3436 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3437 KEY_UNKNOWN, 3438 3439 KEY_FAVORITES, /* Favorite app, 0x311 */ 3440 KEY_RESERVED, /* Clipping tool */ 3441 KEY_RESERVED, 3442 KEY_BLUETOOTH, /* Bluetooth */ 3443 KEY_KEYBOARD /* Keyboard, 0x315 */ 3444 }, 3445 }; 3446 3447 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3448 /* Generic maps (fallback) */ 3449 { 3450 .vendor = PCI_VENDOR_ID_IBM, 3451 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3452 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3453 }, 3454 { 3455 .vendor = PCI_VENDOR_ID_LENOVO, 3456 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3457 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3458 }, 3459 }; 3460 3461 #define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t) 3462 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t) 3463 3464 int res, i; 3465 int status; 3466 int hkeyv; 3467 bool radiosw_state = false; 3468 bool tabletsw_state = false; 3469 3470 unsigned long quirks; 3471 unsigned long keymap_id; 3472 3473 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3474 "initializing hotkey subdriver\n"); 3475 3476 BUG_ON(!tpacpi_inputdev); 3477 BUG_ON(tpacpi_inputdev->open != NULL || 3478 tpacpi_inputdev->close != NULL); 3479 3480 TPACPI_ACPIHANDLE_INIT(hkey); 3481 mutex_init(&hotkey_mutex); 3482 3483 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3484 mutex_init(&hotkey_thread_data_mutex); 3485 #endif 3486 3487 /* hotkey not supported on 570 */ 3488 tp_features.hotkey = hkey_handle != NULL; 3489 3490 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3491 "hotkeys are %s\n", 3492 str_supported(tp_features.hotkey)); 3493 3494 if (!tp_features.hotkey) 3495 return 1; 3496 3497 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3498 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3499 3500 tpacpi_disable_brightness_delay(); 3501 3502 /* MUST have enough space for all attributes to be added to 3503 * hotkey_dev_attributes */ 3504 hotkey_dev_attributes = create_attr_set( 3505 ARRAY_SIZE(hotkey_attributes) + 2, 3506 NULL); 3507 if (!hotkey_dev_attributes) 3508 return -ENOMEM; 3509 res = add_many_to_attr_set(hotkey_dev_attributes, 3510 hotkey_attributes, 3511 ARRAY_SIZE(hotkey_attributes)); 3512 if (res) 3513 goto err_exit; 3514 3515 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3516 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3517 for HKEY interface version 0x100 */ 3518 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3519 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3520 "firmware HKEY interface version: 0x%x\n", 3521 hkeyv); 3522 3523 switch (hkeyv >> 8) { 3524 case 1: 3525 /* 3526 * MHKV 0x100 in A31, R40, R40e, 3527 * T4x, X31, and later 3528 */ 3529 3530 /* Paranoia check AND init hotkey_all_mask */ 3531 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3532 "MHKA", "qd")) { 3533 pr_err("missing MHKA handler, please report this to %s\n", 3534 TPACPI_MAIL); 3535 /* Fallback: pre-init for FN+F3,F4,F12 */ 3536 hotkey_all_mask = 0x080cU; 3537 } else { 3538 tp_features.hotkey_mask = 1; 3539 } 3540 break; 3541 3542 case 2: 3543 /* 3544 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3545 */ 3546 3547 /* Paranoia check AND init hotkey_all_mask */ 3548 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3549 "MHKA", "dd", 1)) { 3550 pr_err("missing MHKA handler, please report this to %s\n", 3551 TPACPI_MAIL); 3552 /* Fallback: pre-init for FN+F3,F4,F12 */ 3553 hotkey_all_mask = 0x080cU; 3554 } else { 3555 tp_features.hotkey_mask = 1; 3556 } 3557 3558 /* 3559 * Check if we have an adaptive keyboard, like on the 3560 * Lenovo Carbon X1 2014 (2nd Gen). 3561 */ 3562 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3563 "MHKA", "dd", 2)) { 3564 if (hotkey_adaptive_all_mask != 0) { 3565 tp_features.has_adaptive_kbd = true; 3566 res = sysfs_create_group( 3567 &tpacpi_pdev->dev.kobj, 3568 &adaptive_kbd_attr_group); 3569 if (res) 3570 goto err_exit; 3571 } 3572 } else { 3573 tp_features.has_adaptive_kbd = false; 3574 hotkey_adaptive_all_mask = 0x0U; 3575 } 3576 break; 3577 3578 default: 3579 pr_err("unknown version of the HKEY interface: 0x%x\n", 3580 hkeyv); 3581 pr_err("please report this to %s\n", TPACPI_MAIL); 3582 break; 3583 } 3584 } 3585 3586 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3587 "hotkey masks are %s\n", 3588 str_supported(tp_features.hotkey_mask)); 3589 3590 /* Init hotkey_all_mask if not initialized yet */ 3591 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3592 (quirks & TPACPI_HK_Q_INIMASK)) 3593 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3594 3595 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3596 if (tp_features.hotkey_mask) { 3597 /* hotkey_source_mask *must* be zero for 3598 * the first hotkey_mask_get to return hotkey_orig_mask */ 3599 res = hotkey_mask_get(); 3600 if (res) 3601 goto err_exit; 3602 3603 hotkey_orig_mask = hotkey_acpi_mask; 3604 } else { 3605 hotkey_orig_mask = hotkey_all_mask; 3606 hotkey_acpi_mask = hotkey_all_mask; 3607 } 3608 3609 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3610 if (dbg_wlswemul) { 3611 tp_features.hotkey_wlsw = 1; 3612 radiosw_state = !!tpacpi_wlsw_emulstate; 3613 pr_info("radio switch emulation enabled\n"); 3614 } else 3615 #endif 3616 /* Not all thinkpads have a hardware radio switch */ 3617 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3618 tp_features.hotkey_wlsw = 1; 3619 radiosw_state = !!status; 3620 pr_info("radio switch found; radios are %s\n", 3621 enabled(status, 0)); 3622 } 3623 if (tp_features.hotkey_wlsw) 3624 res = add_to_attr_set(hotkey_dev_attributes, 3625 &dev_attr_hotkey_radio_sw.attr); 3626 3627 res = hotkey_init_tablet_mode(); 3628 if (res < 0) 3629 goto err_exit; 3630 3631 tabletsw_state = res; 3632 3633 res = register_attr_set_with_sysfs(hotkey_dev_attributes, 3634 &tpacpi_pdev->dev.kobj); 3635 if (res) 3636 goto err_exit; 3637 3638 /* Set up key map */ 3639 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, 3640 GFP_KERNEL); 3641 if (!hotkey_keycode_map) { 3642 pr_err("failed to allocate memory for key map\n"); 3643 res = -ENOMEM; 3644 goto err_exit; 3645 } 3646 3647 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3648 ARRAY_SIZE(tpacpi_keymap_qtable)); 3649 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps)); 3650 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3651 "using keymap number %lu\n", keymap_id); 3652 3653 memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id], 3654 TPACPI_HOTKEY_MAP_SIZE); 3655 3656 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN); 3657 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3658 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3659 tpacpi_inputdev->keycode = hotkey_keycode_map; 3660 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3661 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3662 input_set_capability(tpacpi_inputdev, EV_KEY, 3663 hotkey_keycode_map[i]); 3664 } else { 3665 if (i < sizeof(hotkey_reserved_mask)*8) 3666 hotkey_reserved_mask |= 1 << i; 3667 } 3668 } 3669 3670 if (tp_features.hotkey_wlsw) { 3671 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3672 input_report_switch(tpacpi_inputdev, 3673 SW_RFKILL_ALL, radiosw_state); 3674 } 3675 if (tp_features.hotkey_tablet) { 3676 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3677 input_report_switch(tpacpi_inputdev, 3678 SW_TABLET_MODE, tabletsw_state); 3679 } 3680 3681 /* Do not issue duplicate brightness change events to 3682 * userspace. tpacpi_detect_brightness_capabilities() must have 3683 * been called before this point */ 3684 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3685 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3686 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3687 3688 /* Disable brightness up/down on Lenovo thinkpads when 3689 * ACPI is handling them, otherwise it is plain impossible 3690 * for userspace to do something even remotely sane */ 3691 hotkey_reserved_mask |= 3692 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3693 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3694 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3695 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3696 } 3697 3698 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3699 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3700 & ~hotkey_all_mask 3701 & ~hotkey_reserved_mask; 3702 3703 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3704 "hotkey source mask 0x%08x, polling freq %u\n", 3705 hotkey_source_mask, hotkey_poll_freq); 3706 #endif 3707 3708 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3709 "enabling firmware HKEY event interface...\n"); 3710 res = hotkey_status_set(true); 3711 if (res) { 3712 hotkey_exit(); 3713 return res; 3714 } 3715 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3716 | hotkey_driver_mask) 3717 & ~hotkey_source_mask); 3718 if (res < 0 && res != -ENXIO) { 3719 hotkey_exit(); 3720 return res; 3721 } 3722 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3723 & ~hotkey_reserved_mask; 3724 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3725 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3726 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3727 3728 tpacpi_inputdev->open = &hotkey_inputdev_open; 3729 tpacpi_inputdev->close = &hotkey_inputdev_close; 3730 3731 hotkey_poll_setup_safe(true); 3732 3733 return 0; 3734 3735 err_exit: 3736 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3737 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 3738 &adaptive_kbd_attr_group); 3739 3740 hotkey_dev_attributes = NULL; 3741 3742 return (res < 0) ? res : 1; 3743 } 3744 3745 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3746 * mode, Web conference mode, Function mode and Lay-flat mode. 3747 * We support Home mode and Function mode currently. 3748 * 3749 * Will consider support rest of modes in future. 3750 * 3751 */ 3752 static const int adaptive_keyboard_modes[] = { 3753 HOME_MODE, 3754 /* WEB_BROWSER_MODE = 2, 3755 WEB_CONFERENCE_MODE = 3, */ 3756 FUNCTION_MODE 3757 }; 3758 3759 #define DFR_CHANGE_ROW 0x101 3760 #define DFR_SHOW_QUICKVIEW_ROW 0x102 3761 #define FIRST_ADAPTIVE_KEY 0x103 3762 3763 /* press Fn key a while second, it will switch to Function Mode. Then 3764 * release Fn key, previous mode be restored. 3765 */ 3766 static bool adaptive_keyboard_mode_is_saved; 3767 static int adaptive_keyboard_prev_mode; 3768 3769 static int adaptive_keyboard_get_mode(void) 3770 { 3771 int mode = 0; 3772 3773 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3774 pr_err("Cannot read adaptive keyboard mode\n"); 3775 return -EIO; 3776 } 3777 3778 return mode; 3779 } 3780 3781 static int adaptive_keyboard_set_mode(int new_mode) 3782 { 3783 if (new_mode < 0 || 3784 new_mode > LAYFLAT_MODE) 3785 return -EINVAL; 3786 3787 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3788 pr_err("Cannot set adaptive keyboard mode\n"); 3789 return -EIO; 3790 } 3791 3792 return 0; 3793 } 3794 3795 static int adaptive_keyboard_get_next_mode(int mode) 3796 { 3797 size_t i; 3798 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3799 3800 for (i = 0; i <= max_mode; i++) { 3801 if (adaptive_keyboard_modes[i] == mode) 3802 break; 3803 } 3804 3805 if (i >= max_mode) 3806 i = 0; 3807 else 3808 i++; 3809 3810 return adaptive_keyboard_modes[i]; 3811 } 3812 3813 static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) 3814 { 3815 int current_mode = 0; 3816 int new_mode = 0; 3817 int keycode; 3818 3819 switch (scancode) { 3820 case DFR_CHANGE_ROW: 3821 if (adaptive_keyboard_mode_is_saved) { 3822 new_mode = adaptive_keyboard_prev_mode; 3823 adaptive_keyboard_mode_is_saved = false; 3824 } else { 3825 current_mode = adaptive_keyboard_get_mode(); 3826 if (current_mode < 0) 3827 return false; 3828 new_mode = adaptive_keyboard_get_next_mode( 3829 current_mode); 3830 } 3831 3832 if (adaptive_keyboard_set_mode(new_mode) < 0) 3833 return false; 3834 3835 return true; 3836 3837 case DFR_SHOW_QUICKVIEW_ROW: 3838 current_mode = adaptive_keyboard_get_mode(); 3839 if (current_mode < 0) 3840 return false; 3841 3842 adaptive_keyboard_prev_mode = current_mode; 3843 adaptive_keyboard_mode_is_saved = true; 3844 3845 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0) 3846 return false; 3847 return true; 3848 3849 default: 3850 if (scancode < FIRST_ADAPTIVE_KEY || 3851 scancode >= FIRST_ADAPTIVE_KEY + 3852 TP_ACPI_HOTKEYSCAN_EXTENDED_START - 3853 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3854 pr_info("Unhandled adaptive keyboard key: 0x%x\n", 3855 scancode); 3856 return false; 3857 } 3858 keycode = hotkey_keycode_map[scancode - FIRST_ADAPTIVE_KEY + 3859 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START]; 3860 if (keycode != KEY_RESERVED) { 3861 mutex_lock(&tpacpi_inputdev_send_mutex); 3862 3863 input_report_key(tpacpi_inputdev, keycode, 1); 3864 input_sync(tpacpi_inputdev); 3865 3866 input_report_key(tpacpi_inputdev, keycode, 0); 3867 input_sync(tpacpi_inputdev); 3868 3869 mutex_unlock(&tpacpi_inputdev_send_mutex); 3870 } 3871 return true; 3872 } 3873 } 3874 3875 static bool hotkey_notify_hotkey(const u32 hkey, 3876 bool *send_acpi_ev, 3877 bool *ignore_acpi_ev) 3878 { 3879 /* 0x1000-0x1FFF: key presses */ 3880 unsigned int scancode = hkey & 0xfff; 3881 *send_acpi_ev = true; 3882 *ignore_acpi_ev = false; 3883 3884 /* 3885 * Original events are in the 0x10XX range, the adaptive keyboard 3886 * found in 2014 X1 Carbon emits events are of 0x11XX. In 2017 3887 * models, additional keys are emitted through 0x13XX. 3888 */ 3889 switch ((hkey >> 8) & 0xf) { 3890 case 0: 3891 if (scancode > 0 && 3892 scancode <= TP_ACPI_HOTKEYSCAN_ADAPTIVE_START) { 3893 /* HKEY event 0x1001 is scancode 0x00 */ 3894 scancode--; 3895 if (!(hotkey_source_mask & (1 << scancode))) { 3896 tpacpi_input_send_key_masked(scancode); 3897 *send_acpi_ev = false; 3898 } else { 3899 *ignore_acpi_ev = true; 3900 } 3901 return true; 3902 } 3903 break; 3904 3905 case 1: 3906 return adaptive_keyboard_hotkey_notify_hotkey(scancode); 3907 3908 case 3: 3909 /* Extended keycodes start at 0x300 and our offset into the map 3910 * TP_ACPI_HOTKEYSCAN_EXTENDED_START. The calculated scancode 3911 * will be positive, but might not be in the correct range. 3912 */ 3913 scancode -= (0x300 - TP_ACPI_HOTKEYSCAN_EXTENDED_START); 3914 if (scancode >= TP_ACPI_HOTKEYSCAN_EXTENDED_START && 3915 scancode < TPACPI_HOTKEY_MAP_LEN) { 3916 tpacpi_input_send_key(scancode); 3917 return true; 3918 } 3919 break; 3920 } 3921 3922 return false; 3923 } 3924 3925 static bool hotkey_notify_wakeup(const u32 hkey, 3926 bool *send_acpi_ev, 3927 bool *ignore_acpi_ev) 3928 { 3929 /* 0x2000-0x2FFF: Wakeup reason */ 3930 *send_acpi_ev = true; 3931 *ignore_acpi_ev = false; 3932 3933 switch (hkey) { 3934 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3935 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3936 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3937 *ignore_acpi_ev = true; 3938 break; 3939 3940 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3941 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3942 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3943 *ignore_acpi_ev = true; 3944 break; 3945 3946 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3947 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3948 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3949 /* how to auto-heal: */ 3950 /* 2313: woke up from S3, go to S4/S5 */ 3951 /* 2413: woke up from S4, go to S5 */ 3952 break; 3953 3954 default: 3955 return false; 3956 } 3957 3958 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3959 pr_info("woke up due to a hot-unplug request...\n"); 3960 hotkey_wakeup_reason_notify_change(); 3961 } 3962 return true; 3963 } 3964 3965 static bool hotkey_notify_dockevent(const u32 hkey, 3966 bool *send_acpi_ev, 3967 bool *ignore_acpi_ev) 3968 { 3969 /* 0x4000-0x4FFF: dock-related events */ 3970 *send_acpi_ev = true; 3971 *ignore_acpi_ev = false; 3972 3973 switch (hkey) { 3974 case TP_HKEY_EV_UNDOCK_ACK: 3975 /* ACPI undock operation completed after wakeup */ 3976 hotkey_autosleep_ack = 1; 3977 pr_info("undocked\n"); 3978 hotkey_wakeup_hotunplug_complete_notify_change(); 3979 return true; 3980 3981 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3982 pr_info("docked into hotplug port replicator\n"); 3983 return true; 3984 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3985 pr_info("undocked from hotplug port replicator\n"); 3986 return true; 3987 3988 default: 3989 return false; 3990 } 3991 } 3992 3993 static bool hotkey_notify_usrevent(const u32 hkey, 3994 bool *send_acpi_ev, 3995 bool *ignore_acpi_ev) 3996 { 3997 /* 0x5000-0x5FFF: human interface helpers */ 3998 *send_acpi_ev = true; 3999 *ignore_acpi_ev = false; 4000 4001 switch (hkey) { 4002 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 4003 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 4004 return true; 4005 4006 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 4007 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 4008 tpacpi_input_send_tabletsw(); 4009 hotkey_tablet_mode_notify_change(); 4010 *send_acpi_ev = false; 4011 return true; 4012 4013 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 4014 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 4015 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 4016 /* do not propagate these events */ 4017 *ignore_acpi_ev = true; 4018 return true; 4019 4020 default: 4021 return false; 4022 } 4023 } 4024 4025 static void thermal_dump_all_sensors(void); 4026 4027 static bool hotkey_notify_6xxx(const u32 hkey, 4028 bool *send_acpi_ev, 4029 bool *ignore_acpi_ev) 4030 { 4031 bool known = true; 4032 4033 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 4034 *send_acpi_ev = true; 4035 *ignore_acpi_ev = false; 4036 4037 switch (hkey) { 4038 case TP_HKEY_EV_THM_TABLE_CHANGED: 4039 pr_info("EC reports that Thermal Table has changed\n"); 4040 /* recommended action: do nothing, we don't have 4041 * Lenovo ATM information */ 4042 return true; 4043 case TP_HKEY_EV_ALARM_BAT_HOT: 4044 pr_crit("THERMAL ALARM: battery is too hot!\n"); 4045 /* recommended action: warn user through gui */ 4046 break; 4047 case TP_HKEY_EV_ALARM_BAT_XHOT: 4048 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 4049 /* recommended action: immediate sleep/hibernate */ 4050 break; 4051 case TP_HKEY_EV_ALARM_SENSOR_HOT: 4052 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 4053 /* recommended action: warn user through gui, that */ 4054 /* some internal component is too hot */ 4055 break; 4056 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 4057 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 4058 /* recommended action: immediate sleep/hibernate */ 4059 break; 4060 case TP_HKEY_EV_AC_CHANGED: 4061 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 4062 * AC status changed; can be triggered by plugging or 4063 * unplugging AC adapter, docking or undocking. */ 4064 4065 /* fallthrough */ 4066 4067 case TP_HKEY_EV_KEY_NUMLOCK: 4068 case TP_HKEY_EV_KEY_FN: 4069 case TP_HKEY_EV_KEY_FN_ESC: 4070 /* key press events, we just ignore them as long as the EC 4071 * is still reporting them in the normal keyboard stream */ 4072 *send_acpi_ev = false; 4073 *ignore_acpi_ev = true; 4074 return true; 4075 4076 case TP_HKEY_EV_TABLET_CHANGED: 4077 tpacpi_input_send_tabletsw(); 4078 hotkey_tablet_mode_notify_change(); 4079 *send_acpi_ev = false; 4080 break; 4081 4082 default: 4083 pr_warn("unknown possible thermal alarm or keyboard event received\n"); 4084 known = false; 4085 } 4086 4087 thermal_dump_all_sensors(); 4088 4089 return known; 4090 } 4091 4092 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 4093 { 4094 u32 hkey; 4095 bool send_acpi_ev; 4096 bool ignore_acpi_ev; 4097 bool known_ev; 4098 4099 if (event != 0x80) { 4100 pr_err("unknown HKEY notification event %d\n", event); 4101 /* forward it to userspace, maybe it knows how to handle it */ 4102 acpi_bus_generate_netlink_event( 4103 ibm->acpi->device->pnp.device_class, 4104 dev_name(&ibm->acpi->device->dev), 4105 event, 0); 4106 return; 4107 } 4108 4109 while (1) { 4110 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 4111 pr_err("failed to retrieve HKEY event\n"); 4112 return; 4113 } 4114 4115 if (hkey == 0) { 4116 /* queue empty */ 4117 return; 4118 } 4119 4120 send_acpi_ev = true; 4121 ignore_acpi_ev = false; 4122 4123 switch (hkey >> 12) { 4124 case 1: 4125 /* 0x1000-0x1FFF: key presses */ 4126 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 4127 &ignore_acpi_ev); 4128 break; 4129 case 2: 4130 /* 0x2000-0x2FFF: Wakeup reason */ 4131 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 4132 &ignore_acpi_ev); 4133 break; 4134 case 3: 4135 /* 0x3000-0x3FFF: bay-related wakeups */ 4136 switch (hkey) { 4137 case TP_HKEY_EV_BAYEJ_ACK: 4138 hotkey_autosleep_ack = 1; 4139 pr_info("bay ejected\n"); 4140 hotkey_wakeup_hotunplug_complete_notify_change(); 4141 known_ev = true; 4142 break; 4143 case TP_HKEY_EV_OPTDRV_EJ: 4144 /* FIXME: kick libata if SATA link offline */ 4145 known_ev = true; 4146 break; 4147 default: 4148 known_ev = false; 4149 } 4150 break; 4151 case 4: 4152 /* 0x4000-0x4FFF: dock-related events */ 4153 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev, 4154 &ignore_acpi_ev); 4155 break; 4156 case 5: 4157 /* 0x5000-0x5FFF: human interface helpers */ 4158 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 4159 &ignore_acpi_ev); 4160 break; 4161 case 6: 4162 /* 0x6000-0x6FFF: thermal alarms/notices and 4163 * keyboard events */ 4164 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev, 4165 &ignore_acpi_ev); 4166 break; 4167 case 7: 4168 /* 0x7000-0x7FFF: misc */ 4169 if (tp_features.hotkey_wlsw && 4170 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 4171 tpacpi_send_radiosw_update(); 4172 send_acpi_ev = 0; 4173 known_ev = true; 4174 break; 4175 } 4176 /* fallthrough to default */ 4177 default: 4178 known_ev = false; 4179 } 4180 if (!known_ev) { 4181 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 4182 pr_notice("please report the conditions when this event happened to %s\n", 4183 TPACPI_MAIL); 4184 } 4185 4186 /* netlink events */ 4187 if (!ignore_acpi_ev && send_acpi_ev) { 4188 acpi_bus_generate_netlink_event( 4189 ibm->acpi->device->pnp.device_class, 4190 dev_name(&ibm->acpi->device->dev), 4191 event, hkey); 4192 } 4193 } 4194 } 4195 4196 static void hotkey_suspend(void) 4197 { 4198 /* Do these on suspend, we get the events on early resume! */ 4199 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 4200 hotkey_autosleep_ack = 0; 4201 4202 /* save previous mode of adaptive keyboard of X1 Carbon */ 4203 if (tp_features.has_adaptive_kbd) { 4204 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 4205 "GTRW", "dd", 0)) { 4206 pr_err("Cannot read adaptive keyboard mode.\n"); 4207 } 4208 } 4209 } 4210 4211 static void hotkey_resume(void) 4212 { 4213 tpacpi_disable_brightness_delay(); 4214 4215 if (hotkey_status_set(true) < 0 || 4216 hotkey_mask_set(hotkey_acpi_mask) < 0) 4217 pr_err("error while attempting to reset the event firmware interface\n"); 4218 4219 tpacpi_send_radiosw_update(); 4220 hotkey_tablet_mode_notify_change(); 4221 hotkey_wakeup_reason_notify_change(); 4222 hotkey_wakeup_hotunplug_complete_notify_change(); 4223 hotkey_poll_setup_safe(false); 4224 4225 /* restore previous mode of adapive keyboard of X1 Carbon */ 4226 if (tp_features.has_adaptive_kbd) { 4227 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4228 adaptive_keyboard_prev_mode)) { 4229 pr_err("Cannot set adaptive keyboard mode.\n"); 4230 } 4231 } 4232 } 4233 4234 /* procfs -------------------------------------------------------------- */ 4235 static int hotkey_read(struct seq_file *m) 4236 { 4237 int res, status; 4238 4239 if (!tp_features.hotkey) { 4240 seq_printf(m, "status:\t\tnot supported\n"); 4241 return 0; 4242 } 4243 4244 if (mutex_lock_killable(&hotkey_mutex)) 4245 return -ERESTARTSYS; 4246 res = hotkey_status_get(&status); 4247 if (!res) 4248 res = hotkey_mask_get(); 4249 mutex_unlock(&hotkey_mutex); 4250 if (res) 4251 return res; 4252 4253 seq_printf(m, "status:\t\t%s\n", enabled(status, 0)); 4254 if (hotkey_all_mask) { 4255 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4256 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4257 } else { 4258 seq_printf(m, "mask:\t\tnot supported\n"); 4259 seq_printf(m, "commands:\tenable, disable, reset\n"); 4260 } 4261 4262 return 0; 4263 } 4264 4265 static void hotkey_enabledisable_warn(bool enable) 4266 { 4267 tpacpi_log_usertask("procfs hotkey enable/disable"); 4268 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4269 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4270 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4271 } 4272 4273 static int hotkey_write(char *buf) 4274 { 4275 int res; 4276 u32 mask; 4277 char *cmd; 4278 4279 if (!tp_features.hotkey) 4280 return -ENODEV; 4281 4282 if (mutex_lock_killable(&hotkey_mutex)) 4283 return -ERESTARTSYS; 4284 4285 mask = hotkey_user_mask; 4286 4287 res = 0; 4288 while ((cmd = next_cmd(&buf))) { 4289 if (strlencmp(cmd, "enable") == 0) { 4290 hotkey_enabledisable_warn(1); 4291 } else if (strlencmp(cmd, "disable") == 0) { 4292 hotkey_enabledisable_warn(0); 4293 res = -EPERM; 4294 } else if (strlencmp(cmd, "reset") == 0) { 4295 mask = (hotkey_all_mask | hotkey_source_mask) 4296 & ~hotkey_reserved_mask; 4297 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4298 /* mask set */ 4299 } else if (sscanf(cmd, "%x", &mask) == 1) { 4300 /* mask set */ 4301 } else { 4302 res = -EINVAL; 4303 goto errexit; 4304 } 4305 } 4306 4307 if (!res) { 4308 tpacpi_disclose_usertask("procfs hotkey", 4309 "set mask to 0x%08x\n", mask); 4310 res = hotkey_user_mask_set(mask); 4311 } 4312 4313 errexit: 4314 mutex_unlock(&hotkey_mutex); 4315 return res; 4316 } 4317 4318 static const struct acpi_device_id ibm_htk_device_ids[] = { 4319 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4320 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4321 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4322 {"", 0}, 4323 }; 4324 4325 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4326 .hid = ibm_htk_device_ids, 4327 .notify = hotkey_notify, 4328 .handle = &hkey_handle, 4329 .type = ACPI_DEVICE_NOTIFY, 4330 }; 4331 4332 static struct ibm_struct hotkey_driver_data = { 4333 .name = "hotkey", 4334 .read = hotkey_read, 4335 .write = hotkey_write, 4336 .exit = hotkey_exit, 4337 .resume = hotkey_resume, 4338 .suspend = hotkey_suspend, 4339 .acpi = &ibm_hotkey_acpidriver, 4340 }; 4341 4342 /************************************************************************* 4343 * Bluetooth subdriver 4344 */ 4345 4346 enum { 4347 /* ACPI GBDC/SBDC bits */ 4348 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4349 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4350 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4351 0 = disable, 1 = enable */ 4352 }; 4353 4354 enum { 4355 /* ACPI \BLTH commands */ 4356 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4357 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4358 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4359 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4360 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4361 }; 4362 4363 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4364 4365 static int bluetooth_get_status(void) 4366 { 4367 int status; 4368 4369 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4370 if (dbg_bluetoothemul) 4371 return (tpacpi_bluetooth_emulstate) ? 4372 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4373 #endif 4374 4375 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4376 return -EIO; 4377 4378 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4379 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4380 } 4381 4382 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4383 { 4384 int status; 4385 4386 vdbg_printk(TPACPI_DBG_RFKILL, 4387 "will attempt to %s bluetooth\n", 4388 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4389 4390 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4391 if (dbg_bluetoothemul) { 4392 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4393 return 0; 4394 } 4395 #endif 4396 4397 if (state == TPACPI_RFK_RADIO_ON) 4398 status = TP_ACPI_BLUETOOTH_RADIOSSW 4399 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4400 else 4401 status = 0; 4402 4403 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4404 return -EIO; 4405 4406 return 0; 4407 } 4408 4409 /* sysfs bluetooth enable ---------------------------------------------- */ 4410 static ssize_t bluetooth_enable_show(struct device *dev, 4411 struct device_attribute *attr, 4412 char *buf) 4413 { 4414 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4415 attr, buf); 4416 } 4417 4418 static ssize_t bluetooth_enable_store(struct device *dev, 4419 struct device_attribute *attr, 4420 const char *buf, size_t count) 4421 { 4422 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4423 attr, buf, count); 4424 } 4425 4426 static DEVICE_ATTR_RW(bluetooth_enable); 4427 4428 /* --------------------------------------------------------------------- */ 4429 4430 static struct attribute *bluetooth_attributes[] = { 4431 &dev_attr_bluetooth_enable.attr, 4432 NULL 4433 }; 4434 4435 static const struct attribute_group bluetooth_attr_group = { 4436 .attrs = bluetooth_attributes, 4437 }; 4438 4439 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4440 .get_status = bluetooth_get_status, 4441 .set_status = bluetooth_set_status, 4442 }; 4443 4444 static void bluetooth_shutdown(void) 4445 { 4446 /* Order firmware to save current state to NVRAM */ 4447 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4448 TP_ACPI_BLTH_SAVE_STATE)) 4449 pr_notice("failed to save bluetooth state to NVRAM\n"); 4450 else 4451 vdbg_printk(TPACPI_DBG_RFKILL, 4452 "bluetooth state saved to NVRAM\n"); 4453 } 4454 4455 static void bluetooth_exit(void) 4456 { 4457 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4458 &bluetooth_attr_group); 4459 4460 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4461 4462 bluetooth_shutdown(); 4463 } 4464 4465 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4466 { 4467 int res; 4468 int status = 0; 4469 4470 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4471 "initializing bluetooth subdriver\n"); 4472 4473 TPACPI_ACPIHANDLE_INIT(hkey); 4474 4475 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4476 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4477 tp_features.bluetooth = hkey_handle && 4478 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4479 4480 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4481 "bluetooth is %s, status 0x%02x\n", 4482 str_supported(tp_features.bluetooth), 4483 status); 4484 4485 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4486 if (dbg_bluetoothemul) { 4487 tp_features.bluetooth = 1; 4488 pr_info("bluetooth switch emulation enabled\n"); 4489 } else 4490 #endif 4491 if (tp_features.bluetooth && 4492 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4493 /* no bluetooth hardware present in system */ 4494 tp_features.bluetooth = 0; 4495 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4496 "bluetooth hardware not installed\n"); 4497 } 4498 4499 if (!tp_features.bluetooth) 4500 return 1; 4501 4502 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4503 &bluetooth_tprfk_ops, 4504 RFKILL_TYPE_BLUETOOTH, 4505 TPACPI_RFK_BLUETOOTH_SW_NAME, 4506 true); 4507 if (res) 4508 return res; 4509 4510 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4511 &bluetooth_attr_group); 4512 if (res) { 4513 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4514 return res; 4515 } 4516 4517 return 0; 4518 } 4519 4520 /* procfs -------------------------------------------------------------- */ 4521 static int bluetooth_read(struct seq_file *m) 4522 { 4523 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4524 } 4525 4526 static int bluetooth_write(char *buf) 4527 { 4528 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4529 } 4530 4531 static struct ibm_struct bluetooth_driver_data = { 4532 .name = "bluetooth", 4533 .read = bluetooth_read, 4534 .write = bluetooth_write, 4535 .exit = bluetooth_exit, 4536 .shutdown = bluetooth_shutdown, 4537 }; 4538 4539 /************************************************************************* 4540 * Wan subdriver 4541 */ 4542 4543 enum { 4544 /* ACPI GWAN/SWAN bits */ 4545 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4546 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4547 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4548 0 = disable, 1 = enable */ 4549 }; 4550 4551 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4552 4553 static int wan_get_status(void) 4554 { 4555 int status; 4556 4557 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4558 if (dbg_wwanemul) 4559 return (tpacpi_wwan_emulstate) ? 4560 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4561 #endif 4562 4563 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4564 return -EIO; 4565 4566 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4567 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4568 } 4569 4570 static int wan_set_status(enum tpacpi_rfkill_state state) 4571 { 4572 int status; 4573 4574 vdbg_printk(TPACPI_DBG_RFKILL, 4575 "will attempt to %s wwan\n", 4576 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4577 4578 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4579 if (dbg_wwanemul) { 4580 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4581 return 0; 4582 } 4583 #endif 4584 4585 if (state == TPACPI_RFK_RADIO_ON) 4586 status = TP_ACPI_WANCARD_RADIOSSW 4587 | TP_ACPI_WANCARD_RESUMECTRL; 4588 else 4589 status = 0; 4590 4591 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4592 return -EIO; 4593 4594 return 0; 4595 } 4596 4597 /* sysfs wan enable ---------------------------------------------------- */ 4598 static ssize_t wan_enable_show(struct device *dev, 4599 struct device_attribute *attr, 4600 char *buf) 4601 { 4602 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4603 attr, buf); 4604 } 4605 4606 static ssize_t wan_enable_store(struct device *dev, 4607 struct device_attribute *attr, 4608 const char *buf, size_t count) 4609 { 4610 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4611 attr, buf, count); 4612 } 4613 4614 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4615 wan_enable_show, wan_enable_store); 4616 4617 /* --------------------------------------------------------------------- */ 4618 4619 static struct attribute *wan_attributes[] = { 4620 &dev_attr_wwan_enable.attr, 4621 NULL 4622 }; 4623 4624 static const struct attribute_group wan_attr_group = { 4625 .attrs = wan_attributes, 4626 }; 4627 4628 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4629 .get_status = wan_get_status, 4630 .set_status = wan_set_status, 4631 }; 4632 4633 static void wan_shutdown(void) 4634 { 4635 /* Order firmware to save current state to NVRAM */ 4636 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4637 TP_ACPI_WGSV_SAVE_STATE)) 4638 pr_notice("failed to save WWAN state to NVRAM\n"); 4639 else 4640 vdbg_printk(TPACPI_DBG_RFKILL, 4641 "WWAN state saved to NVRAM\n"); 4642 } 4643 4644 static void wan_exit(void) 4645 { 4646 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4647 &wan_attr_group); 4648 4649 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4650 4651 wan_shutdown(); 4652 } 4653 4654 static int __init wan_init(struct ibm_init_struct *iibm) 4655 { 4656 int res; 4657 int status = 0; 4658 4659 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4660 "initializing wan subdriver\n"); 4661 4662 TPACPI_ACPIHANDLE_INIT(hkey); 4663 4664 tp_features.wan = hkey_handle && 4665 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4666 4667 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4668 "wan is %s, status 0x%02x\n", 4669 str_supported(tp_features.wan), 4670 status); 4671 4672 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4673 if (dbg_wwanemul) { 4674 tp_features.wan = 1; 4675 pr_info("wwan switch emulation enabled\n"); 4676 } else 4677 #endif 4678 if (tp_features.wan && 4679 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4680 /* no wan hardware present in system */ 4681 tp_features.wan = 0; 4682 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4683 "wan hardware not installed\n"); 4684 } 4685 4686 if (!tp_features.wan) 4687 return 1; 4688 4689 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4690 &wan_tprfk_ops, 4691 RFKILL_TYPE_WWAN, 4692 TPACPI_RFK_WWAN_SW_NAME, 4693 true); 4694 if (res) 4695 return res; 4696 4697 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4698 &wan_attr_group); 4699 4700 if (res) { 4701 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4702 return res; 4703 } 4704 4705 return 0; 4706 } 4707 4708 /* procfs -------------------------------------------------------------- */ 4709 static int wan_read(struct seq_file *m) 4710 { 4711 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4712 } 4713 4714 static int wan_write(char *buf) 4715 { 4716 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4717 } 4718 4719 static struct ibm_struct wan_driver_data = { 4720 .name = "wan", 4721 .read = wan_read, 4722 .write = wan_write, 4723 .exit = wan_exit, 4724 .shutdown = wan_shutdown, 4725 }; 4726 4727 /************************************************************************* 4728 * UWB subdriver 4729 */ 4730 4731 enum { 4732 /* ACPI GUWB/SUWB bits */ 4733 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4734 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4735 }; 4736 4737 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4738 4739 static int uwb_get_status(void) 4740 { 4741 int status; 4742 4743 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4744 if (dbg_uwbemul) 4745 return (tpacpi_uwb_emulstate) ? 4746 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4747 #endif 4748 4749 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4750 return -EIO; 4751 4752 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4753 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4754 } 4755 4756 static int uwb_set_status(enum tpacpi_rfkill_state state) 4757 { 4758 int status; 4759 4760 vdbg_printk(TPACPI_DBG_RFKILL, 4761 "will attempt to %s UWB\n", 4762 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4763 4764 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4765 if (dbg_uwbemul) { 4766 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4767 return 0; 4768 } 4769 #endif 4770 4771 if (state == TPACPI_RFK_RADIO_ON) 4772 status = TP_ACPI_UWB_RADIOSSW; 4773 else 4774 status = 0; 4775 4776 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4777 return -EIO; 4778 4779 return 0; 4780 } 4781 4782 /* --------------------------------------------------------------------- */ 4783 4784 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4785 .get_status = uwb_get_status, 4786 .set_status = uwb_set_status, 4787 }; 4788 4789 static void uwb_exit(void) 4790 { 4791 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4792 } 4793 4794 static int __init uwb_init(struct ibm_init_struct *iibm) 4795 { 4796 int res; 4797 int status = 0; 4798 4799 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4800 "initializing uwb subdriver\n"); 4801 4802 TPACPI_ACPIHANDLE_INIT(hkey); 4803 4804 tp_features.uwb = hkey_handle && 4805 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4806 4807 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4808 "uwb is %s, status 0x%02x\n", 4809 str_supported(tp_features.uwb), 4810 status); 4811 4812 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4813 if (dbg_uwbemul) { 4814 tp_features.uwb = 1; 4815 pr_info("uwb switch emulation enabled\n"); 4816 } else 4817 #endif 4818 if (tp_features.uwb && 4819 !(status & TP_ACPI_UWB_HWPRESENT)) { 4820 /* no uwb hardware present in system */ 4821 tp_features.uwb = 0; 4822 dbg_printk(TPACPI_DBG_INIT, 4823 "uwb hardware not installed\n"); 4824 } 4825 4826 if (!tp_features.uwb) 4827 return 1; 4828 4829 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4830 &uwb_tprfk_ops, 4831 RFKILL_TYPE_UWB, 4832 TPACPI_RFK_UWB_SW_NAME, 4833 false); 4834 return res; 4835 } 4836 4837 static struct ibm_struct uwb_driver_data = { 4838 .name = "uwb", 4839 .exit = uwb_exit, 4840 .flags.experimental = 1, 4841 }; 4842 4843 /************************************************************************* 4844 * Video subdriver 4845 */ 4846 4847 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4848 4849 enum video_access_mode { 4850 TPACPI_VIDEO_NONE = 0, 4851 TPACPI_VIDEO_570, /* 570 */ 4852 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4853 TPACPI_VIDEO_NEW, /* all others */ 4854 }; 4855 4856 enum { /* video status flags, based on VIDEO_570 */ 4857 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4858 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4859 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4860 }; 4861 4862 enum { /* TPACPI_VIDEO_570 constants */ 4863 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4864 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4865 * video_status_flags */ 4866 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4867 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4868 }; 4869 4870 static enum video_access_mode video_supported; 4871 static int video_orig_autosw; 4872 4873 static int video_autosw_get(void); 4874 static int video_autosw_set(int enable); 4875 4876 TPACPI_HANDLE(vid, root, 4877 "\\_SB.PCI.AGP.VGA", /* 570 */ 4878 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4879 "\\_SB.PCI0.VID0", /* 770e */ 4880 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4881 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4882 "\\_SB.PCI0.AGP.VID", /* all others */ 4883 ); /* R30, R31 */ 4884 4885 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4886 4887 static int __init video_init(struct ibm_init_struct *iibm) 4888 { 4889 int ivga; 4890 4891 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4892 4893 TPACPI_ACPIHANDLE_INIT(vid); 4894 if (tpacpi_is_ibm()) 4895 TPACPI_ACPIHANDLE_INIT(vid2); 4896 4897 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4898 /* G41, assume IVGA doesn't change */ 4899 vid_handle = vid2_handle; 4900 4901 if (!vid_handle) 4902 /* video switching not supported on R30, R31 */ 4903 video_supported = TPACPI_VIDEO_NONE; 4904 else if (tpacpi_is_ibm() && 4905 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4906 /* 570 */ 4907 video_supported = TPACPI_VIDEO_570; 4908 else if (tpacpi_is_ibm() && 4909 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4910 /* 600e/x, 770e, 770x */ 4911 video_supported = TPACPI_VIDEO_770; 4912 else 4913 /* all others */ 4914 video_supported = TPACPI_VIDEO_NEW; 4915 4916 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4917 str_supported(video_supported != TPACPI_VIDEO_NONE), 4918 video_supported); 4919 4920 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1; 4921 } 4922 4923 static void video_exit(void) 4924 { 4925 dbg_printk(TPACPI_DBG_EXIT, 4926 "restoring original video autoswitch mode\n"); 4927 if (video_autosw_set(video_orig_autosw)) 4928 pr_err("error while trying to restore original video autoswitch mode\n"); 4929 } 4930 4931 static int video_outputsw_get(void) 4932 { 4933 int status = 0; 4934 int i; 4935 4936 switch (video_supported) { 4937 case TPACPI_VIDEO_570: 4938 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 4939 TP_ACPI_VIDEO_570_PHSCMD)) 4940 return -EIO; 4941 status = i & TP_ACPI_VIDEO_570_PHSMASK; 4942 break; 4943 case TPACPI_VIDEO_770: 4944 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 4945 return -EIO; 4946 if (i) 4947 status |= TP_ACPI_VIDEO_S_LCD; 4948 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 4949 return -EIO; 4950 if (i) 4951 status |= TP_ACPI_VIDEO_S_CRT; 4952 break; 4953 case TPACPI_VIDEO_NEW: 4954 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 4955 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 4956 return -EIO; 4957 if (i) 4958 status |= TP_ACPI_VIDEO_S_CRT; 4959 4960 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 4961 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 4962 return -EIO; 4963 if (i) 4964 status |= TP_ACPI_VIDEO_S_LCD; 4965 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 4966 return -EIO; 4967 if (i) 4968 status |= TP_ACPI_VIDEO_S_DVI; 4969 break; 4970 default: 4971 return -ENOSYS; 4972 } 4973 4974 return status; 4975 } 4976 4977 static int video_outputsw_set(int status) 4978 { 4979 int autosw; 4980 int res = 0; 4981 4982 switch (video_supported) { 4983 case TPACPI_VIDEO_570: 4984 res = acpi_evalf(NULL, NULL, 4985 "\\_SB.PHS2", "vdd", 4986 TP_ACPI_VIDEO_570_PHS2CMD, 4987 status | TP_ACPI_VIDEO_570_PHS2SET); 4988 break; 4989 case TPACPI_VIDEO_770: 4990 autosw = video_autosw_get(); 4991 if (autosw < 0) 4992 return autosw; 4993 4994 res = video_autosw_set(1); 4995 if (res) 4996 return res; 4997 res = acpi_evalf(vid_handle, NULL, 4998 "ASWT", "vdd", status * 0x100, 0); 4999 if (!autosw && video_autosw_set(autosw)) { 5000 pr_err("video auto-switch left enabled due to error\n"); 5001 return -EIO; 5002 } 5003 break; 5004 case TPACPI_VIDEO_NEW: 5005 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 5006 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 5007 break; 5008 default: 5009 return -ENOSYS; 5010 } 5011 5012 return (res) ? 0 : -EIO; 5013 } 5014 5015 static int video_autosw_get(void) 5016 { 5017 int autosw = 0; 5018 5019 switch (video_supported) { 5020 case TPACPI_VIDEO_570: 5021 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 5022 return -EIO; 5023 break; 5024 case TPACPI_VIDEO_770: 5025 case TPACPI_VIDEO_NEW: 5026 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 5027 return -EIO; 5028 break; 5029 default: 5030 return -ENOSYS; 5031 } 5032 5033 return autosw & 1; 5034 } 5035 5036 static int video_autosw_set(int enable) 5037 { 5038 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 5039 return -EIO; 5040 return 0; 5041 } 5042 5043 static int video_outputsw_cycle(void) 5044 { 5045 int autosw = video_autosw_get(); 5046 int res; 5047 5048 if (autosw < 0) 5049 return autosw; 5050 5051 switch (video_supported) { 5052 case TPACPI_VIDEO_570: 5053 res = video_autosw_set(1); 5054 if (res) 5055 return res; 5056 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 5057 break; 5058 case TPACPI_VIDEO_770: 5059 case TPACPI_VIDEO_NEW: 5060 res = video_autosw_set(1); 5061 if (res) 5062 return res; 5063 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 5064 break; 5065 default: 5066 return -ENOSYS; 5067 } 5068 if (!autosw && video_autosw_set(autosw)) { 5069 pr_err("video auto-switch left enabled due to error\n"); 5070 return -EIO; 5071 } 5072 5073 return (res) ? 0 : -EIO; 5074 } 5075 5076 static int video_expand_toggle(void) 5077 { 5078 switch (video_supported) { 5079 case TPACPI_VIDEO_570: 5080 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 5081 0 : -EIO; 5082 case TPACPI_VIDEO_770: 5083 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 5084 0 : -EIO; 5085 case TPACPI_VIDEO_NEW: 5086 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 5087 0 : -EIO; 5088 default: 5089 return -ENOSYS; 5090 } 5091 /* not reached */ 5092 } 5093 5094 static int video_read(struct seq_file *m) 5095 { 5096 int status, autosw; 5097 5098 if (video_supported == TPACPI_VIDEO_NONE) { 5099 seq_printf(m, "status:\t\tnot supported\n"); 5100 return 0; 5101 } 5102 5103 /* Even reads can crash X.org, so... */ 5104 if (!capable(CAP_SYS_ADMIN)) 5105 return -EPERM; 5106 5107 status = video_outputsw_get(); 5108 if (status < 0) 5109 return status; 5110 5111 autosw = video_autosw_get(); 5112 if (autosw < 0) 5113 return autosw; 5114 5115 seq_printf(m, "status:\t\tsupported\n"); 5116 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0)); 5117 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1)); 5118 if (video_supported == TPACPI_VIDEO_NEW) 5119 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3)); 5120 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0)); 5121 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 5122 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 5123 if (video_supported == TPACPI_VIDEO_NEW) 5124 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 5125 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 5126 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 5127 5128 return 0; 5129 } 5130 5131 static int video_write(char *buf) 5132 { 5133 char *cmd; 5134 int enable, disable, status; 5135 int res; 5136 5137 if (video_supported == TPACPI_VIDEO_NONE) 5138 return -ENODEV; 5139 5140 /* Even reads can crash X.org, let alone writes... */ 5141 if (!capable(CAP_SYS_ADMIN)) 5142 return -EPERM; 5143 5144 enable = 0; 5145 disable = 0; 5146 5147 while ((cmd = next_cmd(&buf))) { 5148 if (strlencmp(cmd, "lcd_enable") == 0) { 5149 enable |= TP_ACPI_VIDEO_S_LCD; 5150 } else if (strlencmp(cmd, "lcd_disable") == 0) { 5151 disable |= TP_ACPI_VIDEO_S_LCD; 5152 } else if (strlencmp(cmd, "crt_enable") == 0) { 5153 enable |= TP_ACPI_VIDEO_S_CRT; 5154 } else if (strlencmp(cmd, "crt_disable") == 0) { 5155 disable |= TP_ACPI_VIDEO_S_CRT; 5156 } else if (video_supported == TPACPI_VIDEO_NEW && 5157 strlencmp(cmd, "dvi_enable") == 0) { 5158 enable |= TP_ACPI_VIDEO_S_DVI; 5159 } else if (video_supported == TPACPI_VIDEO_NEW && 5160 strlencmp(cmd, "dvi_disable") == 0) { 5161 disable |= TP_ACPI_VIDEO_S_DVI; 5162 } else if (strlencmp(cmd, "auto_enable") == 0) { 5163 res = video_autosw_set(1); 5164 if (res) 5165 return res; 5166 } else if (strlencmp(cmd, "auto_disable") == 0) { 5167 res = video_autosw_set(0); 5168 if (res) 5169 return res; 5170 } else if (strlencmp(cmd, "video_switch") == 0) { 5171 res = video_outputsw_cycle(); 5172 if (res) 5173 return res; 5174 } else if (strlencmp(cmd, "expand_toggle") == 0) { 5175 res = video_expand_toggle(); 5176 if (res) 5177 return res; 5178 } else 5179 return -EINVAL; 5180 } 5181 5182 if (enable || disable) { 5183 status = video_outputsw_get(); 5184 if (status < 0) 5185 return status; 5186 res = video_outputsw_set((status & ~disable) | enable); 5187 if (res) 5188 return res; 5189 } 5190 5191 return 0; 5192 } 5193 5194 static struct ibm_struct video_driver_data = { 5195 .name = "video", 5196 .read = video_read, 5197 .write = video_write, 5198 .exit = video_exit, 5199 }; 5200 5201 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5202 5203 /************************************************************************* 5204 * Keyboard backlight subdriver 5205 */ 5206 5207 static enum led_brightness kbdlight_brightness; 5208 static DEFINE_MUTEX(kbdlight_mutex); 5209 5210 static int kbdlight_set_level(int level) 5211 { 5212 int ret = 0; 5213 5214 if (!hkey_handle) 5215 return -ENXIO; 5216 5217 mutex_lock(&kbdlight_mutex); 5218 5219 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5220 ret = -EIO; 5221 else 5222 kbdlight_brightness = level; 5223 5224 mutex_unlock(&kbdlight_mutex); 5225 5226 return ret; 5227 } 5228 5229 static int kbdlight_get_level(void) 5230 { 5231 int status = 0; 5232 5233 if (!hkey_handle) 5234 return -ENXIO; 5235 5236 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5237 return -EIO; 5238 5239 if (status < 0) 5240 return status; 5241 5242 return status & 0x3; 5243 } 5244 5245 static bool kbdlight_is_supported(void) 5246 { 5247 int status = 0; 5248 5249 if (!hkey_handle) 5250 return false; 5251 5252 if (!acpi_has_method(hkey_handle, "MLCG")) { 5253 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5254 return false; 5255 } 5256 5257 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5258 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5259 return false; 5260 } 5261 5262 if (status < 0) { 5263 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5264 return false; 5265 } 5266 5267 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5268 /* 5269 * Guessed test for keyboard backlight: 5270 * 5271 * Machines with backlight keyboard return: 5272 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5273 * b110100010010000000XX - ThinkPad x230 5274 * b010100000010000000XX - ThinkPad x240 5275 * b010100000010000000XX - ThinkPad W541 5276 * (XX is current backlight level) 5277 * 5278 * Machines without backlight keyboard return: 5279 * b10100001000000000000 - ThinkPad x230 5280 * b10110001000000000000 - ThinkPad E430 5281 * b00000000000000000000 - ThinkPad E450 5282 * 5283 * Candidate BITs for detection test (XOR): 5284 * b01000000001000000000 5285 * ^ 5286 */ 5287 return status & BIT(9); 5288 } 5289 5290 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5291 enum led_brightness brightness) 5292 { 5293 return kbdlight_set_level(brightness); 5294 } 5295 5296 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5297 { 5298 int level; 5299 5300 level = kbdlight_get_level(); 5301 if (level < 0) 5302 return 0; 5303 5304 return level; 5305 } 5306 5307 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5308 .led_classdev = { 5309 .name = "tpacpi::kbd_backlight", 5310 .max_brightness = 2, 5311 .flags = LED_BRIGHT_HW_CHANGED, 5312 .brightness_set_blocking = &kbdlight_sysfs_set, 5313 .brightness_get = &kbdlight_sysfs_get, 5314 } 5315 }; 5316 5317 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5318 { 5319 int rc; 5320 5321 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5322 5323 TPACPI_ACPIHANDLE_INIT(hkey); 5324 5325 if (!kbdlight_is_supported()) { 5326 tp_features.kbdlight = 0; 5327 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5328 return 1; 5329 } 5330 5331 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5332 tp_features.kbdlight = 1; 5333 5334 rc = led_classdev_register(&tpacpi_pdev->dev, 5335 &tpacpi_led_kbdlight.led_classdev); 5336 if (rc < 0) { 5337 tp_features.kbdlight = 0; 5338 return rc; 5339 } 5340 5341 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5342 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5343 return 0; 5344 } 5345 5346 static void kbdlight_exit(void) 5347 { 5348 if (tp_features.kbdlight) 5349 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5350 } 5351 5352 static int kbdlight_set_level_and_update(int level) 5353 { 5354 int ret; 5355 struct led_classdev *led_cdev; 5356 5357 ret = kbdlight_set_level(level); 5358 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5359 5360 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5361 led_cdev->brightness = level; 5362 5363 return ret; 5364 } 5365 5366 static int kbdlight_read(struct seq_file *m) 5367 { 5368 int level; 5369 5370 if (!tp_features.kbdlight) { 5371 seq_printf(m, "status:\t\tnot supported\n"); 5372 } else { 5373 level = kbdlight_get_level(); 5374 if (level < 0) 5375 seq_printf(m, "status:\t\terror %d\n", level); 5376 else 5377 seq_printf(m, "status:\t\t%d\n", level); 5378 seq_printf(m, "commands:\t0, 1, 2\n"); 5379 } 5380 5381 return 0; 5382 } 5383 5384 static int kbdlight_write(char *buf) 5385 { 5386 char *cmd; 5387 int level = -1; 5388 5389 if (!tp_features.kbdlight) 5390 return -ENODEV; 5391 5392 while ((cmd = next_cmd(&buf))) { 5393 if (strlencmp(cmd, "0") == 0) 5394 level = 0; 5395 else if (strlencmp(cmd, "1") == 0) 5396 level = 1; 5397 else if (strlencmp(cmd, "2") == 0) 5398 level = 2; 5399 else 5400 return -EINVAL; 5401 } 5402 5403 if (level == -1) 5404 return -EINVAL; 5405 5406 return kbdlight_set_level_and_update(level); 5407 } 5408 5409 static void kbdlight_suspend(void) 5410 { 5411 struct led_classdev *led_cdev; 5412 5413 if (!tp_features.kbdlight) 5414 return; 5415 5416 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5417 led_update_brightness(led_cdev); 5418 led_classdev_suspend(led_cdev); 5419 } 5420 5421 static void kbdlight_resume(void) 5422 { 5423 if (!tp_features.kbdlight) 5424 return; 5425 5426 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5427 } 5428 5429 static struct ibm_struct kbdlight_driver_data = { 5430 .name = "kbdlight", 5431 .read = kbdlight_read, 5432 .write = kbdlight_write, 5433 .suspend = kbdlight_suspend, 5434 .resume = kbdlight_resume, 5435 .exit = kbdlight_exit, 5436 }; 5437 5438 /************************************************************************* 5439 * Light (thinklight) subdriver 5440 */ 5441 5442 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5443 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5444 5445 static int light_get_status(void) 5446 { 5447 int status = 0; 5448 5449 if (tp_features.light_status) { 5450 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5451 return -EIO; 5452 return (!!status); 5453 } 5454 5455 return -ENXIO; 5456 } 5457 5458 static int light_set_status(int status) 5459 { 5460 int rc; 5461 5462 if (tp_features.light) { 5463 if (cmos_handle) { 5464 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5465 (status) ? 5466 TP_CMOS_THINKLIGHT_ON : 5467 TP_CMOS_THINKLIGHT_OFF); 5468 } else { 5469 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5470 (status) ? 1 : 0); 5471 } 5472 return (rc) ? 0 : -EIO; 5473 } 5474 5475 return -ENXIO; 5476 } 5477 5478 static int light_sysfs_set(struct led_classdev *led_cdev, 5479 enum led_brightness brightness) 5480 { 5481 return light_set_status((brightness != LED_OFF) ? 5482 TPACPI_LED_ON : TPACPI_LED_OFF); 5483 } 5484 5485 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5486 { 5487 return (light_get_status() == 1) ? LED_FULL : LED_OFF; 5488 } 5489 5490 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5491 .led_classdev = { 5492 .name = "tpacpi::thinklight", 5493 .brightness_set_blocking = &light_sysfs_set, 5494 .brightness_get = &light_sysfs_get, 5495 } 5496 }; 5497 5498 static int __init light_init(struct ibm_init_struct *iibm) 5499 { 5500 int rc; 5501 5502 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5503 5504 if (tpacpi_is_ibm()) { 5505 TPACPI_ACPIHANDLE_INIT(ledb); 5506 TPACPI_ACPIHANDLE_INIT(lght); 5507 } 5508 TPACPI_ACPIHANDLE_INIT(cmos); 5509 5510 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5511 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5512 5513 if (tp_features.light) 5514 /* light status not supported on 5515 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5516 tp_features.light_status = 5517 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5518 5519 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5520 str_supported(tp_features.light), 5521 str_supported(tp_features.light_status)); 5522 5523 if (!tp_features.light) 5524 return 1; 5525 5526 rc = led_classdev_register(&tpacpi_pdev->dev, 5527 &tpacpi_led_thinklight.led_classdev); 5528 5529 if (rc < 0) { 5530 tp_features.light = 0; 5531 tp_features.light_status = 0; 5532 } else { 5533 rc = 0; 5534 } 5535 5536 return rc; 5537 } 5538 5539 static void light_exit(void) 5540 { 5541 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5542 } 5543 5544 static int light_read(struct seq_file *m) 5545 { 5546 int status; 5547 5548 if (!tp_features.light) { 5549 seq_printf(m, "status:\t\tnot supported\n"); 5550 } else if (!tp_features.light_status) { 5551 seq_printf(m, "status:\t\tunknown\n"); 5552 seq_printf(m, "commands:\ton, off\n"); 5553 } else { 5554 status = light_get_status(); 5555 if (status < 0) 5556 return status; 5557 seq_printf(m, "status:\t\t%s\n", onoff(status, 0)); 5558 seq_printf(m, "commands:\ton, off\n"); 5559 } 5560 5561 return 0; 5562 } 5563 5564 static int light_write(char *buf) 5565 { 5566 char *cmd; 5567 int newstatus = 0; 5568 5569 if (!tp_features.light) 5570 return -ENODEV; 5571 5572 while ((cmd = next_cmd(&buf))) { 5573 if (strlencmp(cmd, "on") == 0) { 5574 newstatus = 1; 5575 } else if (strlencmp(cmd, "off") == 0) { 5576 newstatus = 0; 5577 } else 5578 return -EINVAL; 5579 } 5580 5581 return light_set_status(newstatus); 5582 } 5583 5584 static struct ibm_struct light_driver_data = { 5585 .name = "light", 5586 .read = light_read, 5587 .write = light_write, 5588 .exit = light_exit, 5589 }; 5590 5591 /************************************************************************* 5592 * CMOS subdriver 5593 */ 5594 5595 /* sysfs cmos_command -------------------------------------------------- */ 5596 static ssize_t cmos_command_store(struct device *dev, 5597 struct device_attribute *attr, 5598 const char *buf, size_t count) 5599 { 5600 unsigned long cmos_cmd; 5601 int res; 5602 5603 if (parse_strtoul(buf, 21, &cmos_cmd)) 5604 return -EINVAL; 5605 5606 res = issue_thinkpad_cmos_command(cmos_cmd); 5607 return (res) ? res : count; 5608 } 5609 5610 static DEVICE_ATTR_WO(cmos_command); 5611 5612 /* --------------------------------------------------------------------- */ 5613 5614 static int __init cmos_init(struct ibm_init_struct *iibm) 5615 { 5616 int res; 5617 5618 vdbg_printk(TPACPI_DBG_INIT, 5619 "initializing cmos commands subdriver\n"); 5620 5621 TPACPI_ACPIHANDLE_INIT(cmos); 5622 5623 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5624 str_supported(cmos_handle != NULL)); 5625 5626 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5627 if (res) 5628 return res; 5629 5630 return (cmos_handle) ? 0 : 1; 5631 } 5632 5633 static void cmos_exit(void) 5634 { 5635 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 5636 } 5637 5638 static int cmos_read(struct seq_file *m) 5639 { 5640 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5641 R30, R31, T20-22, X20-21 */ 5642 if (!cmos_handle) 5643 seq_printf(m, "status:\t\tnot supported\n"); 5644 else { 5645 seq_printf(m, "status:\t\tsupported\n"); 5646 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5647 } 5648 5649 return 0; 5650 } 5651 5652 static int cmos_write(char *buf) 5653 { 5654 char *cmd; 5655 int cmos_cmd, res; 5656 5657 while ((cmd = next_cmd(&buf))) { 5658 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5659 cmos_cmd >= 0 && cmos_cmd <= 21) { 5660 /* cmos_cmd set */ 5661 } else 5662 return -EINVAL; 5663 5664 res = issue_thinkpad_cmos_command(cmos_cmd); 5665 if (res) 5666 return res; 5667 } 5668 5669 return 0; 5670 } 5671 5672 static struct ibm_struct cmos_driver_data = { 5673 .name = "cmos", 5674 .read = cmos_read, 5675 .write = cmos_write, 5676 .exit = cmos_exit, 5677 }; 5678 5679 /************************************************************************* 5680 * LED subdriver 5681 */ 5682 5683 enum led_access_mode { 5684 TPACPI_LED_NONE = 0, 5685 TPACPI_LED_570, /* 570 */ 5686 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5687 TPACPI_LED_NEW, /* all others */ 5688 }; 5689 5690 enum { /* For TPACPI_LED_OLD */ 5691 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5692 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5693 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5694 }; 5695 5696 static enum led_access_mode led_supported; 5697 5698 static acpi_handle led_handle; 5699 5700 #define TPACPI_LED_NUMLEDS 16 5701 static struct tpacpi_led_classdev *tpacpi_leds; 5702 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5703 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5704 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5705 "tpacpi::power", 5706 "tpacpi:orange:batt", 5707 "tpacpi:green:batt", 5708 "tpacpi::dock_active", 5709 "tpacpi::bay_active", 5710 "tpacpi::dock_batt", 5711 "tpacpi::unknown_led", 5712 "tpacpi::standby", 5713 "tpacpi::dock_status1", 5714 "tpacpi::dock_status2", 5715 "tpacpi::unknown_led2", 5716 "tpacpi::unknown_led3", 5717 "tpacpi::thinkvantage", 5718 }; 5719 #define TPACPI_SAFE_LEDS 0x1081U 5720 5721 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5722 { 5723 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5724 return false; 5725 #else 5726 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5727 #endif 5728 } 5729 5730 static int led_get_status(const unsigned int led) 5731 { 5732 int status; 5733 enum led_status_t led_s; 5734 5735 switch (led_supported) { 5736 case TPACPI_LED_570: 5737 if (!acpi_evalf(ec_handle, 5738 &status, "GLED", "dd", 1 << led)) 5739 return -EIO; 5740 led_s = (status == 0) ? 5741 TPACPI_LED_OFF : 5742 ((status == 1) ? 5743 TPACPI_LED_ON : 5744 TPACPI_LED_BLINK); 5745 tpacpi_led_state_cache[led] = led_s; 5746 return led_s; 5747 default: 5748 return -ENXIO; 5749 } 5750 5751 /* not reached */ 5752 } 5753 5754 static int led_set_status(const unsigned int led, 5755 const enum led_status_t ledstatus) 5756 { 5757 /* off, on, blink. Index is led_status_t */ 5758 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5759 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5760 5761 int rc = 0; 5762 5763 switch (led_supported) { 5764 case TPACPI_LED_570: 5765 /* 570 */ 5766 if (unlikely(led > 7)) 5767 return -EINVAL; 5768 if (unlikely(tpacpi_is_led_restricted(led))) 5769 return -EPERM; 5770 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5771 (1 << led), led_sled_arg1[ledstatus])) 5772 rc = -EIO; 5773 break; 5774 case TPACPI_LED_OLD: 5775 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5776 if (unlikely(led > 7)) 5777 return -EINVAL; 5778 if (unlikely(tpacpi_is_led_restricted(led))) 5779 return -EPERM; 5780 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5781 if (rc >= 0) 5782 rc = ec_write(TPACPI_LED_EC_HLBL, 5783 (ledstatus == TPACPI_LED_BLINK) << led); 5784 if (rc >= 0) 5785 rc = ec_write(TPACPI_LED_EC_HLCL, 5786 (ledstatus != TPACPI_LED_OFF) << led); 5787 break; 5788 case TPACPI_LED_NEW: 5789 /* all others */ 5790 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5791 return -EINVAL; 5792 if (unlikely(tpacpi_is_led_restricted(led))) 5793 return -EPERM; 5794 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5795 led, led_led_arg1[ledstatus])) 5796 rc = -EIO; 5797 break; 5798 default: 5799 rc = -ENXIO; 5800 } 5801 5802 if (!rc) 5803 tpacpi_led_state_cache[led] = ledstatus; 5804 5805 return rc; 5806 } 5807 5808 static int led_sysfs_set(struct led_classdev *led_cdev, 5809 enum led_brightness brightness) 5810 { 5811 struct tpacpi_led_classdev *data = container_of(led_cdev, 5812 struct tpacpi_led_classdev, led_classdev); 5813 enum led_status_t new_state; 5814 5815 if (brightness == LED_OFF) 5816 new_state = TPACPI_LED_OFF; 5817 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5818 new_state = TPACPI_LED_ON; 5819 else 5820 new_state = TPACPI_LED_BLINK; 5821 5822 return led_set_status(data->led, new_state); 5823 } 5824 5825 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5826 unsigned long *delay_on, unsigned long *delay_off) 5827 { 5828 struct tpacpi_led_classdev *data = container_of(led_cdev, 5829 struct tpacpi_led_classdev, led_classdev); 5830 5831 /* Can we choose the flash rate? */ 5832 if (*delay_on == 0 && *delay_off == 0) { 5833 /* yes. set them to the hardware blink rate (1 Hz) */ 5834 *delay_on = 500; /* ms */ 5835 *delay_off = 500; /* ms */ 5836 } else if ((*delay_on != 500) || (*delay_off != 500)) 5837 return -EINVAL; 5838 5839 return led_set_status(data->led, TPACPI_LED_BLINK); 5840 } 5841 5842 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5843 { 5844 int rc; 5845 5846 struct tpacpi_led_classdev *data = container_of(led_cdev, 5847 struct tpacpi_led_classdev, led_classdev); 5848 5849 rc = led_get_status(data->led); 5850 5851 if (rc == TPACPI_LED_OFF || rc < 0) 5852 rc = LED_OFF; /* no error handling in led class :( */ 5853 else 5854 rc = LED_FULL; 5855 5856 return rc; 5857 } 5858 5859 static void led_exit(void) 5860 { 5861 unsigned int i; 5862 5863 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 5864 if (tpacpi_leds[i].led_classdev.name) 5865 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5866 } 5867 5868 kfree(tpacpi_leds); 5869 } 5870 5871 static int __init tpacpi_init_led(unsigned int led) 5872 { 5873 int rc; 5874 5875 tpacpi_leds[led].led = led; 5876 5877 /* LEDs with no name don't get registered */ 5878 if (!tpacpi_led_names[led]) 5879 return 0; 5880 5881 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5882 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5883 if (led_supported == TPACPI_LED_570) 5884 tpacpi_leds[led].led_classdev.brightness_get = 5885 &led_sysfs_get; 5886 5887 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5888 5889 rc = led_classdev_register(&tpacpi_pdev->dev, 5890 &tpacpi_leds[led].led_classdev); 5891 if (rc < 0) 5892 tpacpi_leds[led].led_classdev.name = NULL; 5893 5894 return rc; 5895 } 5896 5897 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5898 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5899 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5900 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5901 5902 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5903 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5904 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5905 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5906 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5907 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5908 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5909 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5910 5911 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5912 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5913 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5914 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5915 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5916 5917 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5918 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5919 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5920 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5921 5922 /* (1) - may have excess leds enabled on MSB */ 5923 5924 /* Defaults (order matters, keep last, don't reorder!) */ 5925 { /* Lenovo */ 5926 .vendor = PCI_VENDOR_ID_LENOVO, 5927 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5928 .quirks = 0x1fffU, 5929 }, 5930 { /* IBM ThinkPads with no EC version string */ 5931 .vendor = PCI_VENDOR_ID_IBM, 5932 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 5933 .quirks = 0x00ffU, 5934 }, 5935 { /* IBM ThinkPads with EC version string */ 5936 .vendor = PCI_VENDOR_ID_IBM, 5937 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5938 .quirks = 0x00bfU, 5939 }, 5940 }; 5941 5942 #undef TPACPI_LEDQ_IBM 5943 #undef TPACPI_LEDQ_LNV 5944 5945 static enum led_access_mode __init led_init_detect_mode(void) 5946 { 5947 acpi_status status; 5948 5949 if (tpacpi_is_ibm()) { 5950 /* 570 */ 5951 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 5952 if (ACPI_SUCCESS(status)) 5953 return TPACPI_LED_570; 5954 5955 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5956 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 5957 if (ACPI_SUCCESS(status)) 5958 return TPACPI_LED_OLD; 5959 } 5960 5961 /* most others */ 5962 status = acpi_get_handle(ec_handle, "LED", &led_handle); 5963 if (ACPI_SUCCESS(status)) 5964 return TPACPI_LED_NEW; 5965 5966 /* R30, R31, and unknown firmwares */ 5967 led_handle = NULL; 5968 return TPACPI_LED_NONE; 5969 } 5970 5971 static int __init led_init(struct ibm_init_struct *iibm) 5972 { 5973 unsigned int i; 5974 int rc; 5975 unsigned long useful_leds; 5976 5977 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 5978 5979 led_supported = led_init_detect_mode(); 5980 5981 if (led_supported != TPACPI_LED_NONE) { 5982 useful_leds = tpacpi_check_quirks(led_useful_qtable, 5983 ARRAY_SIZE(led_useful_qtable)); 5984 5985 if (!useful_leds) { 5986 led_handle = NULL; 5987 led_supported = TPACPI_LED_NONE; 5988 } 5989 } 5990 5991 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 5992 str_supported(led_supported), led_supported); 5993 5994 if (led_supported == TPACPI_LED_NONE) 5995 return 1; 5996 5997 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS, 5998 GFP_KERNEL); 5999 if (!tpacpi_leds) { 6000 pr_err("Out of memory for LED data\n"); 6001 return -ENOMEM; 6002 } 6003 6004 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 6005 tpacpi_leds[i].led = -1; 6006 6007 if (!tpacpi_is_led_restricted(i) && 6008 test_bit(i, &useful_leds)) { 6009 rc = tpacpi_init_led(i); 6010 if (rc < 0) { 6011 led_exit(); 6012 return rc; 6013 } 6014 } 6015 } 6016 6017 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 6018 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 6019 #endif 6020 return 0; 6021 } 6022 6023 #define str_led_status(s) \ 6024 ((s) == TPACPI_LED_OFF ? "off" : \ 6025 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 6026 6027 static int led_read(struct seq_file *m) 6028 { 6029 if (!led_supported) { 6030 seq_printf(m, "status:\t\tnot supported\n"); 6031 return 0; 6032 } 6033 seq_printf(m, "status:\t\tsupported\n"); 6034 6035 if (led_supported == TPACPI_LED_570) { 6036 /* 570 */ 6037 int i, status; 6038 for (i = 0; i < 8; i++) { 6039 status = led_get_status(i); 6040 if (status < 0) 6041 return -EIO; 6042 seq_printf(m, "%d:\t\t%s\n", 6043 i, str_led_status(status)); 6044 } 6045 } 6046 6047 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 6048 6049 return 0; 6050 } 6051 6052 static int led_write(char *buf) 6053 { 6054 char *cmd; 6055 int led, rc; 6056 enum led_status_t s; 6057 6058 if (!led_supported) 6059 return -ENODEV; 6060 6061 while ((cmd = next_cmd(&buf))) { 6062 if (sscanf(cmd, "%d", &led) != 1) 6063 return -EINVAL; 6064 6065 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) || 6066 tpacpi_leds[led].led < 0) 6067 return -ENODEV; 6068 6069 if (strstr(cmd, "off")) { 6070 s = TPACPI_LED_OFF; 6071 } else if (strstr(cmd, "on")) { 6072 s = TPACPI_LED_ON; 6073 } else if (strstr(cmd, "blink")) { 6074 s = TPACPI_LED_BLINK; 6075 } else { 6076 return -EINVAL; 6077 } 6078 6079 rc = led_set_status(led, s); 6080 if (rc < 0) 6081 return rc; 6082 } 6083 6084 return 0; 6085 } 6086 6087 static struct ibm_struct led_driver_data = { 6088 .name = "led", 6089 .read = led_read, 6090 .write = led_write, 6091 .exit = led_exit, 6092 }; 6093 6094 /************************************************************************* 6095 * Beep subdriver 6096 */ 6097 6098 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 6099 6100 #define TPACPI_BEEP_Q1 0x0001 6101 6102 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 6103 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 6104 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 6105 }; 6106 6107 static int __init beep_init(struct ibm_init_struct *iibm) 6108 { 6109 unsigned long quirks; 6110 6111 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 6112 6113 TPACPI_ACPIHANDLE_INIT(beep); 6114 6115 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 6116 str_supported(beep_handle != NULL)); 6117 6118 quirks = tpacpi_check_quirks(beep_quirk_table, 6119 ARRAY_SIZE(beep_quirk_table)); 6120 6121 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 6122 6123 return (beep_handle) ? 0 : 1; 6124 } 6125 6126 static int beep_read(struct seq_file *m) 6127 { 6128 if (!beep_handle) 6129 seq_printf(m, "status:\t\tnot supported\n"); 6130 else { 6131 seq_printf(m, "status:\t\tsupported\n"); 6132 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 6133 } 6134 6135 return 0; 6136 } 6137 6138 static int beep_write(char *buf) 6139 { 6140 char *cmd; 6141 int beep_cmd; 6142 6143 if (!beep_handle) 6144 return -ENODEV; 6145 6146 while ((cmd = next_cmd(&buf))) { 6147 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 6148 beep_cmd >= 0 && beep_cmd <= 17) { 6149 /* beep_cmd set */ 6150 } else 6151 return -EINVAL; 6152 if (tp_features.beep_needs_two_args) { 6153 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 6154 beep_cmd, 0)) 6155 return -EIO; 6156 } else { 6157 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 6158 beep_cmd)) 6159 return -EIO; 6160 } 6161 } 6162 6163 return 0; 6164 } 6165 6166 static struct ibm_struct beep_driver_data = { 6167 .name = "beep", 6168 .read = beep_read, 6169 .write = beep_write, 6170 }; 6171 6172 /************************************************************************* 6173 * Thermal subdriver 6174 */ 6175 6176 enum thermal_access_mode { 6177 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 6178 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 6179 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 6180 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6181 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6182 }; 6183 6184 enum { /* TPACPI_THERMAL_TPEC_* */ 6185 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6186 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6187 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6188 6189 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6190 }; 6191 6192 6193 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6194 struct ibm_thermal_sensors_struct { 6195 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6196 }; 6197 6198 static enum thermal_access_mode thermal_read_mode; 6199 6200 /* idx is zero-based */ 6201 static int thermal_get_sensor(int idx, s32 *value) 6202 { 6203 int t; 6204 s8 tmp; 6205 char tmpi[5]; 6206 6207 t = TP_EC_THERMAL_TMP0; 6208 6209 switch (thermal_read_mode) { 6210 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6211 case TPACPI_THERMAL_TPEC_16: 6212 if (idx >= 8 && idx <= 15) { 6213 t = TP_EC_THERMAL_TMP8; 6214 idx -= 8; 6215 } 6216 /* fallthrough */ 6217 #endif 6218 case TPACPI_THERMAL_TPEC_8: 6219 if (idx <= 7) { 6220 if (!acpi_ec_read(t + idx, &tmp)) 6221 return -EIO; 6222 *value = tmp * 1000; 6223 return 0; 6224 } 6225 break; 6226 6227 case TPACPI_THERMAL_ACPI_UPDT: 6228 if (idx <= 7) { 6229 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6230 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6231 return -EIO; 6232 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6233 return -EIO; 6234 *value = (t - 2732) * 100; 6235 return 0; 6236 } 6237 break; 6238 6239 case TPACPI_THERMAL_ACPI_TMP07: 6240 if (idx <= 7) { 6241 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6242 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6243 return -EIO; 6244 if (t > 127 || t < -127) 6245 t = TP_EC_THERMAL_TMP_NA; 6246 *value = t * 1000; 6247 return 0; 6248 } 6249 break; 6250 6251 case TPACPI_THERMAL_NONE: 6252 default: 6253 return -ENOSYS; 6254 } 6255 6256 return -EINVAL; 6257 } 6258 6259 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6260 { 6261 int res, i; 6262 int n; 6263 6264 n = 8; 6265 i = 0; 6266 6267 if (!s) 6268 return -EINVAL; 6269 6270 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6271 n = 16; 6272 6273 for (i = 0 ; i < n; i++) { 6274 res = thermal_get_sensor(i, &s->temp[i]); 6275 if (res) 6276 return res; 6277 } 6278 6279 return n; 6280 } 6281 6282 static void thermal_dump_all_sensors(void) 6283 { 6284 int n, i; 6285 struct ibm_thermal_sensors_struct t; 6286 6287 n = thermal_get_sensors(&t); 6288 if (n <= 0) 6289 return; 6290 6291 pr_notice("temperatures (Celsius):"); 6292 6293 for (i = 0; i < n; i++) { 6294 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6295 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6296 else 6297 pr_cont(" N/A"); 6298 } 6299 6300 pr_cont("\n"); 6301 } 6302 6303 /* sysfs temp##_input -------------------------------------------------- */ 6304 6305 static ssize_t thermal_temp_input_show(struct device *dev, 6306 struct device_attribute *attr, 6307 char *buf) 6308 { 6309 struct sensor_device_attribute *sensor_attr = 6310 to_sensor_dev_attr(attr); 6311 int idx = sensor_attr->index; 6312 s32 value; 6313 int res; 6314 6315 res = thermal_get_sensor(idx, &value); 6316 if (res) 6317 return res; 6318 if (value == TPACPI_THERMAL_SENSOR_NA) 6319 return -ENXIO; 6320 6321 return snprintf(buf, PAGE_SIZE, "%d\n", value); 6322 } 6323 6324 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6325 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6326 thermal_temp_input_show, NULL, _idxB) 6327 6328 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6329 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6330 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6331 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6332 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6333 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6334 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6335 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6336 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6337 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6338 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6339 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6340 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6341 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6342 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6343 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6344 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6345 }; 6346 6347 #define THERMAL_ATTRS(X) \ 6348 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6349 6350 static struct attribute *thermal_temp_input_attr[] = { 6351 THERMAL_ATTRS(8), 6352 THERMAL_ATTRS(9), 6353 THERMAL_ATTRS(10), 6354 THERMAL_ATTRS(11), 6355 THERMAL_ATTRS(12), 6356 THERMAL_ATTRS(13), 6357 THERMAL_ATTRS(14), 6358 THERMAL_ATTRS(15), 6359 THERMAL_ATTRS(0), 6360 THERMAL_ATTRS(1), 6361 THERMAL_ATTRS(2), 6362 THERMAL_ATTRS(3), 6363 THERMAL_ATTRS(4), 6364 THERMAL_ATTRS(5), 6365 THERMAL_ATTRS(6), 6366 THERMAL_ATTRS(7), 6367 NULL 6368 }; 6369 6370 static const struct attribute_group thermal_temp_input16_group = { 6371 .attrs = thermal_temp_input_attr 6372 }; 6373 6374 static const struct attribute_group thermal_temp_input8_group = { 6375 .attrs = &thermal_temp_input_attr[8] 6376 }; 6377 6378 #undef THERMAL_SENSOR_ATTR_TEMP 6379 #undef THERMAL_ATTRS 6380 6381 /* --------------------------------------------------------------------- */ 6382 6383 static int __init thermal_init(struct ibm_init_struct *iibm) 6384 { 6385 u8 t, ta1, ta2; 6386 int i; 6387 int acpi_tmp7; 6388 int res; 6389 6390 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6391 6392 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6393 6394 if (thinkpad_id.ec_model) { 6395 /* 6396 * Direct EC access mode: sensors at registers 6397 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 6398 * non-implemented, thermal sensors return 0x80 when 6399 * not available 6400 */ 6401 6402 ta1 = ta2 = 0; 6403 for (i = 0; i < 8; i++) { 6404 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6405 ta1 |= t; 6406 } else { 6407 ta1 = 0; 6408 break; 6409 } 6410 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6411 ta2 |= t; 6412 } else { 6413 ta1 = 0; 6414 break; 6415 } 6416 } 6417 if (ta1 == 0) { 6418 /* This is sheer paranoia, but we handle it anyway */ 6419 if (acpi_tmp7) { 6420 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6421 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6422 } else { 6423 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6424 thermal_read_mode = TPACPI_THERMAL_NONE; 6425 } 6426 } else { 6427 thermal_read_mode = 6428 (ta2 != 0) ? 6429 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6430 } 6431 } else if (acpi_tmp7) { 6432 if (tpacpi_is_ibm() && 6433 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6434 /* 600e/x, 770e, 770x */ 6435 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 6436 } else { 6437 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6438 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 6439 } 6440 } else { 6441 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6442 thermal_read_mode = TPACPI_THERMAL_NONE; 6443 } 6444 6445 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6446 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6447 thermal_read_mode); 6448 6449 switch (thermal_read_mode) { 6450 case TPACPI_THERMAL_TPEC_16: 6451 res = sysfs_create_group(&tpacpi_hwmon->kobj, 6452 &thermal_temp_input16_group); 6453 if (res) 6454 return res; 6455 break; 6456 case TPACPI_THERMAL_TPEC_8: 6457 case TPACPI_THERMAL_ACPI_TMP07: 6458 case TPACPI_THERMAL_ACPI_UPDT: 6459 res = sysfs_create_group(&tpacpi_hwmon->kobj, 6460 &thermal_temp_input8_group); 6461 if (res) 6462 return res; 6463 break; 6464 case TPACPI_THERMAL_NONE: 6465 default: 6466 return 1; 6467 } 6468 6469 return 0; 6470 } 6471 6472 static void thermal_exit(void) 6473 { 6474 switch (thermal_read_mode) { 6475 case TPACPI_THERMAL_TPEC_16: 6476 sysfs_remove_group(&tpacpi_hwmon->kobj, 6477 &thermal_temp_input16_group); 6478 break; 6479 case TPACPI_THERMAL_TPEC_8: 6480 case TPACPI_THERMAL_ACPI_TMP07: 6481 case TPACPI_THERMAL_ACPI_UPDT: 6482 sysfs_remove_group(&tpacpi_hwmon->kobj, 6483 &thermal_temp_input8_group); 6484 break; 6485 case TPACPI_THERMAL_NONE: 6486 default: 6487 break; 6488 } 6489 } 6490 6491 static int thermal_read(struct seq_file *m) 6492 { 6493 int n, i; 6494 struct ibm_thermal_sensors_struct t; 6495 6496 n = thermal_get_sensors(&t); 6497 if (unlikely(n < 0)) 6498 return n; 6499 6500 seq_printf(m, "temperatures:\t"); 6501 6502 if (n > 0) { 6503 for (i = 0; i < (n - 1); i++) 6504 seq_printf(m, "%d ", t.temp[i] / 1000); 6505 seq_printf(m, "%d\n", t.temp[i] / 1000); 6506 } else 6507 seq_printf(m, "not supported\n"); 6508 6509 return 0; 6510 } 6511 6512 static struct ibm_struct thermal_driver_data = { 6513 .name = "thermal", 6514 .read = thermal_read, 6515 .exit = thermal_exit, 6516 }; 6517 6518 /************************************************************************* 6519 * Backlight/brightness subdriver 6520 */ 6521 6522 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6523 6524 /* 6525 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6526 * CMOS NVRAM byte 0x5E, bits 0-3. 6527 * 6528 * EC HBRV (0x31) has the following layout 6529 * Bit 7: unknown function 6530 * Bit 6: unknown function 6531 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6532 * Bit 4: must be set to zero to avoid problems 6533 * Bit 3-0: backlight brightness level 6534 * 6535 * brightness_get_raw returns status data in the HBRV layout 6536 * 6537 * WARNING: The X61 has been verified to use HBRV for something else, so 6538 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6539 * testing on the very early *60 Lenovo models... 6540 */ 6541 6542 enum { 6543 TP_EC_BACKLIGHT = 0x31, 6544 6545 /* TP_EC_BACKLIGHT bitmasks */ 6546 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6547 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6548 TP_EC_BACKLIGHT_MAPSW = 0x20, 6549 }; 6550 6551 enum tpacpi_brightness_access_mode { 6552 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6553 TPACPI_BRGHT_MODE_EC, /* EC control */ 6554 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6555 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6556 TPACPI_BRGHT_MODE_MAX 6557 }; 6558 6559 static struct backlight_device *ibm_backlight_device; 6560 6561 static enum tpacpi_brightness_access_mode brightness_mode = 6562 TPACPI_BRGHT_MODE_MAX; 6563 6564 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6565 6566 static struct mutex brightness_mutex; 6567 6568 /* NVRAM brightness access, 6569 * call with brightness_mutex held! */ 6570 static unsigned int tpacpi_brightness_nvram_get(void) 6571 { 6572 u8 lnvram; 6573 6574 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6575 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6576 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6577 lnvram &= bright_maxlvl; 6578 6579 return lnvram; 6580 } 6581 6582 static void tpacpi_brightness_checkpoint_nvram(void) 6583 { 6584 u8 lec = 0; 6585 u8 b_nvram; 6586 6587 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6588 return; 6589 6590 vdbg_printk(TPACPI_DBG_BRGHT, 6591 "trying to checkpoint backlight level to NVRAM...\n"); 6592 6593 if (mutex_lock_killable(&brightness_mutex) < 0) 6594 return; 6595 6596 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6597 goto unlock; 6598 lec &= TP_EC_BACKLIGHT_LVLMSK; 6599 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6600 6601 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6602 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6603 /* NVRAM needs update */ 6604 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6605 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6606 b_nvram |= lec; 6607 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6608 dbg_printk(TPACPI_DBG_BRGHT, 6609 "updated NVRAM backlight level to %u (0x%02x)\n", 6610 (unsigned int) lec, (unsigned int) b_nvram); 6611 } else 6612 vdbg_printk(TPACPI_DBG_BRGHT, 6613 "NVRAM backlight level already is %u (0x%02x)\n", 6614 (unsigned int) lec, (unsigned int) b_nvram); 6615 6616 unlock: 6617 mutex_unlock(&brightness_mutex); 6618 } 6619 6620 6621 /* call with brightness_mutex held! */ 6622 static int tpacpi_brightness_get_raw(int *status) 6623 { 6624 u8 lec = 0; 6625 6626 switch (brightness_mode) { 6627 case TPACPI_BRGHT_MODE_UCMS_STEP: 6628 *status = tpacpi_brightness_nvram_get(); 6629 return 0; 6630 case TPACPI_BRGHT_MODE_EC: 6631 case TPACPI_BRGHT_MODE_ECNVRAM: 6632 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6633 return -EIO; 6634 *status = lec; 6635 return 0; 6636 default: 6637 return -ENXIO; 6638 } 6639 } 6640 6641 /* call with brightness_mutex held! */ 6642 /* do NOT call with illegal backlight level value */ 6643 static int tpacpi_brightness_set_ec(unsigned int value) 6644 { 6645 u8 lec = 0; 6646 6647 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6648 return -EIO; 6649 6650 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6651 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6652 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6653 return -EIO; 6654 6655 return 0; 6656 } 6657 6658 /* call with brightness_mutex held! */ 6659 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6660 { 6661 int cmos_cmd, inc; 6662 unsigned int current_value, i; 6663 6664 current_value = tpacpi_brightness_nvram_get(); 6665 6666 if (value == current_value) 6667 return 0; 6668 6669 cmos_cmd = (value > current_value) ? 6670 TP_CMOS_BRIGHTNESS_UP : 6671 TP_CMOS_BRIGHTNESS_DOWN; 6672 inc = (value > current_value) ? 1 : -1; 6673 6674 for (i = current_value; i != value; i += inc) 6675 if (issue_thinkpad_cmos_command(cmos_cmd)) 6676 return -EIO; 6677 6678 return 0; 6679 } 6680 6681 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6682 static int brightness_set(unsigned int value) 6683 { 6684 int res; 6685 6686 if (value > bright_maxlvl) 6687 return -EINVAL; 6688 6689 vdbg_printk(TPACPI_DBG_BRGHT, 6690 "set backlight level to %d\n", value); 6691 6692 res = mutex_lock_killable(&brightness_mutex); 6693 if (res < 0) 6694 return res; 6695 6696 switch (brightness_mode) { 6697 case TPACPI_BRGHT_MODE_EC: 6698 case TPACPI_BRGHT_MODE_ECNVRAM: 6699 res = tpacpi_brightness_set_ec(value); 6700 break; 6701 case TPACPI_BRGHT_MODE_UCMS_STEP: 6702 res = tpacpi_brightness_set_ucmsstep(value); 6703 break; 6704 default: 6705 res = -ENXIO; 6706 } 6707 6708 mutex_unlock(&brightness_mutex); 6709 return res; 6710 } 6711 6712 /* sysfs backlight class ----------------------------------------------- */ 6713 6714 static int brightness_update_status(struct backlight_device *bd) 6715 { 6716 unsigned int level = 6717 (bd->props.fb_blank == FB_BLANK_UNBLANK && 6718 bd->props.power == FB_BLANK_UNBLANK) ? 6719 bd->props.brightness : 0; 6720 6721 dbg_printk(TPACPI_DBG_BRGHT, 6722 "backlight: attempt to set level to %d\n", 6723 level); 6724 6725 /* it is the backlight class's job (caller) to handle 6726 * EINTR and other errors properly */ 6727 return brightness_set(level); 6728 } 6729 6730 static int brightness_get(struct backlight_device *bd) 6731 { 6732 int status, res; 6733 6734 res = mutex_lock_killable(&brightness_mutex); 6735 if (res < 0) 6736 return 0; 6737 6738 res = tpacpi_brightness_get_raw(&status); 6739 6740 mutex_unlock(&brightness_mutex); 6741 6742 if (res < 0) 6743 return 0; 6744 6745 return status & TP_EC_BACKLIGHT_LVLMSK; 6746 } 6747 6748 static void tpacpi_brightness_notify_change(void) 6749 { 6750 backlight_force_update(ibm_backlight_device, 6751 BACKLIGHT_UPDATE_HOTKEY); 6752 } 6753 6754 static const struct backlight_ops ibm_backlight_data = { 6755 .get_brightness = brightness_get, 6756 .update_status = brightness_update_status, 6757 }; 6758 6759 /* --------------------------------------------------------------------- */ 6760 6761 /* 6762 * Call _BCL method of video device. On some ThinkPads this will 6763 * switch the firmware to the ACPI brightness control mode. 6764 */ 6765 6766 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6767 { 6768 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6769 union acpi_object *obj; 6770 struct acpi_device *device, *child; 6771 int rc; 6772 6773 if (acpi_bus_get_device(handle, &device)) 6774 return 0; 6775 6776 rc = 0; 6777 list_for_each_entry(child, &device->children, node) { 6778 acpi_status status = acpi_evaluate_object(child->handle, "_BCL", 6779 NULL, &buffer); 6780 if (ACPI_FAILURE(status)) 6781 continue; 6782 6783 obj = (union acpi_object *)buffer.pointer; 6784 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 6785 pr_err("Unknown _BCL data, please report this to %s\n", 6786 TPACPI_MAIL); 6787 rc = 0; 6788 } else { 6789 rc = obj->package.count; 6790 } 6791 break; 6792 } 6793 6794 kfree(buffer.pointer); 6795 return rc; 6796 } 6797 6798 6799 /* 6800 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6801 */ 6802 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6803 { 6804 acpi_handle video_device; 6805 int bcl_levels = 0; 6806 6807 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6808 if (video_device) 6809 bcl_levels = tpacpi_query_bcl_levels(video_device); 6810 6811 tp_features.bright_acpimode = (bcl_levels > 0); 6812 6813 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6814 } 6815 6816 /* 6817 * These are only useful for models that have only one possibility 6818 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6819 * these quirks. 6820 */ 6821 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6822 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6823 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6824 6825 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6826 /* Models with ATI GPUs known to require ECNVRAM mode */ 6827 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6828 6829 /* Models with ATI GPUs that can use ECNVRAM */ 6830 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6831 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6832 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6833 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6834 6835 /* Models with Intel Extreme Graphics 2 */ 6836 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6837 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6838 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6839 6840 /* Models with Intel GMA900 */ 6841 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6842 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6843 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6844 }; 6845 6846 /* 6847 * Returns < 0 for error, otherwise sets tp_features.bright_* 6848 * and bright_maxlvl. 6849 */ 6850 static void __init tpacpi_detect_brightness_capabilities(void) 6851 { 6852 unsigned int b; 6853 6854 vdbg_printk(TPACPI_DBG_INIT, 6855 "detecting firmware brightness interface capabilities\n"); 6856 6857 /* we could run a quirks check here (same table used by 6858 * brightness_init) if needed */ 6859 6860 /* 6861 * We always attempt to detect acpi support, so as to switch 6862 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6863 * going to publish a backlight interface 6864 */ 6865 b = tpacpi_check_std_acpi_brightness_support(); 6866 switch (b) { 6867 case 16: 6868 bright_maxlvl = 15; 6869 break; 6870 case 8: 6871 case 0: 6872 bright_maxlvl = 7; 6873 break; 6874 default: 6875 tp_features.bright_unkfw = 1; 6876 bright_maxlvl = b - 1; 6877 } 6878 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6879 } 6880 6881 static int __init brightness_init(struct ibm_init_struct *iibm) 6882 { 6883 struct backlight_properties props; 6884 int b; 6885 unsigned long quirks; 6886 6887 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6888 6889 mutex_init(&brightness_mutex); 6890 6891 quirks = tpacpi_check_quirks(brightness_quirk_table, 6892 ARRAY_SIZE(brightness_quirk_table)); 6893 6894 /* tpacpi_detect_brightness_capabilities() must have run already */ 6895 6896 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6897 if (tp_features.bright_unkfw) 6898 return 1; 6899 6900 if (!brightness_enable) { 6901 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6902 "brightness support disabled by module parameter\n"); 6903 return 1; 6904 } 6905 6906 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6907 if (brightness_enable > 1) { 6908 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6909 return 1; 6910 } else if (brightness_enable == 1) { 6911 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6912 return 1; 6913 } 6914 } else if (tp_features.bright_acpimode && brightness_enable > 1) { 6915 pr_notice("Standard ACPI backlight interface not available, thinkpad_acpi native brightness control enabled\n"); 6916 } 6917 6918 /* 6919 * Check for module parameter bogosity, note that we 6920 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6921 * able to detect "unspecified" 6922 */ 6923 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6924 return -EINVAL; 6925 6926 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 6927 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 6928 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 6929 if (quirks & TPACPI_BRGHT_Q_EC) 6930 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 6931 else 6932 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 6933 6934 dbg_printk(TPACPI_DBG_BRGHT, 6935 "driver auto-selected brightness_mode=%d\n", 6936 brightness_mode); 6937 } 6938 6939 /* Safety */ 6940 if (!tpacpi_is_ibm() && 6941 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 6942 brightness_mode == TPACPI_BRGHT_MODE_EC)) 6943 return -EINVAL; 6944 6945 if (tpacpi_brightness_get_raw(&b) < 0) 6946 return 1; 6947 6948 memset(&props, 0, sizeof(struct backlight_properties)); 6949 props.type = BACKLIGHT_PLATFORM; 6950 props.max_brightness = bright_maxlvl; 6951 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 6952 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 6953 NULL, NULL, 6954 &ibm_backlight_data, 6955 &props); 6956 if (IS_ERR(ibm_backlight_device)) { 6957 int rc = PTR_ERR(ibm_backlight_device); 6958 ibm_backlight_device = NULL; 6959 pr_err("Could not register backlight device\n"); 6960 return rc; 6961 } 6962 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6963 "brightness is supported\n"); 6964 6965 if (quirks & TPACPI_BRGHT_Q_ASK) { 6966 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 6967 brightness_mode); 6968 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 6969 TPACPI_MAIL); 6970 } 6971 6972 /* Added by mistake in early 2007. Probably useless, but it could 6973 * be working around some unknown firmware problem where the value 6974 * read at startup doesn't match the real hardware state... so leave 6975 * it in place just in case */ 6976 backlight_update_status(ibm_backlight_device); 6977 6978 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6979 "brightness: registering brightness hotkeys as change notification\n"); 6980 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 6981 | TP_ACPI_HKEY_BRGHTUP_MASK 6982 | TP_ACPI_HKEY_BRGHTDWN_MASK); 6983 return 0; 6984 } 6985 6986 static void brightness_suspend(void) 6987 { 6988 tpacpi_brightness_checkpoint_nvram(); 6989 } 6990 6991 static void brightness_shutdown(void) 6992 { 6993 tpacpi_brightness_checkpoint_nvram(); 6994 } 6995 6996 static void brightness_exit(void) 6997 { 6998 if (ibm_backlight_device) { 6999 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 7000 "calling backlight_device_unregister()\n"); 7001 backlight_device_unregister(ibm_backlight_device); 7002 } 7003 7004 tpacpi_brightness_checkpoint_nvram(); 7005 } 7006 7007 static int brightness_read(struct seq_file *m) 7008 { 7009 int level; 7010 7011 level = brightness_get(NULL); 7012 if (level < 0) { 7013 seq_printf(m, "level:\t\tunreadable\n"); 7014 } else { 7015 seq_printf(m, "level:\t\t%d\n", level); 7016 seq_printf(m, "commands:\tup, down\n"); 7017 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7018 bright_maxlvl); 7019 } 7020 7021 return 0; 7022 } 7023 7024 static int brightness_write(char *buf) 7025 { 7026 int level; 7027 int rc; 7028 char *cmd; 7029 7030 level = brightness_get(NULL); 7031 if (level < 0) 7032 return level; 7033 7034 while ((cmd = next_cmd(&buf))) { 7035 if (strlencmp(cmd, "up") == 0) { 7036 if (level < bright_maxlvl) 7037 level++; 7038 } else if (strlencmp(cmd, "down") == 0) { 7039 if (level > 0) 7040 level--; 7041 } else if (sscanf(cmd, "level %d", &level) == 1 && 7042 level >= 0 && level <= bright_maxlvl) { 7043 /* new level set */ 7044 } else 7045 return -EINVAL; 7046 } 7047 7048 tpacpi_disclose_usertask("procfs brightness", 7049 "set level to %d\n", level); 7050 7051 /* 7052 * Now we know what the final level should be, so we try to set it. 7053 * Doing it this way makes the syscall restartable in case of EINTR 7054 */ 7055 rc = brightness_set(level); 7056 if (!rc && ibm_backlight_device) 7057 backlight_force_update(ibm_backlight_device, 7058 BACKLIGHT_UPDATE_SYSFS); 7059 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7060 } 7061 7062 static struct ibm_struct brightness_driver_data = { 7063 .name = "brightness", 7064 .read = brightness_read, 7065 .write = brightness_write, 7066 .exit = brightness_exit, 7067 .suspend = brightness_suspend, 7068 .shutdown = brightness_shutdown, 7069 }; 7070 7071 /************************************************************************* 7072 * Volume subdriver 7073 */ 7074 7075 /* 7076 * IBM ThinkPads have a simple volume controller with MUTE gating. 7077 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 7078 * 7079 * Since the *61 series (and probably also the later *60 series), Lenovo 7080 * ThinkPads only implement the MUTE gate. 7081 * 7082 * EC register 0x30 7083 * Bit 6: MUTE (1 mutes sound) 7084 * Bit 3-0: Volume 7085 * Other bits should be zero as far as we know. 7086 * 7087 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 7088 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 7089 * such as bit 7 which is used to detect repeated presses of MUTE, 7090 * and we leave them unchanged. 7091 * 7092 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7093 * in response to user input. Unfortunately, this rarely works well. 7094 * The laptop changes the state of its internal MUTE gate and, on some 7095 * models, sends KEY_MUTE, causing any user code that responds to the 7096 * mute button to get confused. The hardware MUTE gate is also 7097 * unnecessary, since user code can handle the mute button without 7098 * kernel or EC help. 7099 * 7100 * To avoid confusing userspace, we simply disable all EC-based mute 7101 * and volume controls when possible. 7102 */ 7103 7104 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7105 7106 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7107 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7108 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7109 7110 #if SNDRV_CARDS <= 32 7111 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7112 #else 7113 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7114 #endif 7115 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7116 static char *alsa_id = "ThinkPadEC"; 7117 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7118 7119 struct tpacpi_alsa_data { 7120 struct snd_card *card; 7121 struct snd_ctl_elem_id *ctl_mute_id; 7122 struct snd_ctl_elem_id *ctl_vol_id; 7123 }; 7124 7125 static struct snd_card *alsa_card; 7126 7127 enum { 7128 TP_EC_AUDIO = 0x30, 7129 7130 /* TP_EC_AUDIO bits */ 7131 TP_EC_AUDIO_MUTESW = 6, 7132 7133 /* TP_EC_AUDIO bitmasks */ 7134 TP_EC_AUDIO_LVL_MSK = 0x0F, 7135 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7136 7137 /* Maximum volume */ 7138 TP_EC_VOLUME_MAX = 14, 7139 }; 7140 7141 enum tpacpi_volume_access_mode { 7142 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7143 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7144 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7145 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7146 TPACPI_VOL_MODE_MAX 7147 }; 7148 7149 enum tpacpi_volume_capabilities { 7150 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7151 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7152 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7153 TPACPI_VOL_CAP_MAX 7154 }; 7155 7156 enum tpacpi_mute_btn_mode { 7157 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7158 /* We don't know what mode 1 is. */ 7159 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7160 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7161 }; 7162 7163 static enum tpacpi_volume_access_mode volume_mode = 7164 TPACPI_VOL_MODE_MAX; 7165 7166 static enum tpacpi_volume_capabilities volume_capabilities; 7167 static bool volume_control_allowed; 7168 static bool software_mute_requested = true; 7169 static bool software_mute_active; 7170 static int software_mute_orig_mode; 7171 7172 /* 7173 * Used to syncronize writers to TP_EC_AUDIO and 7174 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7175 */ 7176 static struct mutex volume_mutex; 7177 7178 static void tpacpi_volume_checkpoint_nvram(void) 7179 { 7180 u8 lec = 0; 7181 u8 b_nvram; 7182 u8 ec_mask; 7183 7184 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7185 return; 7186 if (!volume_control_allowed) 7187 return; 7188 if (software_mute_active) 7189 return; 7190 7191 vdbg_printk(TPACPI_DBG_MIXER, 7192 "trying to checkpoint mixer state to NVRAM...\n"); 7193 7194 if (tp_features.mixer_no_level_control) 7195 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7196 else 7197 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7198 7199 if (mutex_lock_killable(&volume_mutex) < 0) 7200 return; 7201 7202 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7203 goto unlock; 7204 lec &= ec_mask; 7205 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7206 7207 if (lec != (b_nvram & ec_mask)) { 7208 /* NVRAM needs update */ 7209 b_nvram &= ~ec_mask; 7210 b_nvram |= lec; 7211 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7212 dbg_printk(TPACPI_DBG_MIXER, 7213 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7214 (unsigned int) lec, (unsigned int) b_nvram); 7215 } else { 7216 vdbg_printk(TPACPI_DBG_MIXER, 7217 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7218 (unsigned int) lec, (unsigned int) b_nvram); 7219 } 7220 7221 unlock: 7222 mutex_unlock(&volume_mutex); 7223 } 7224 7225 static int volume_get_status_ec(u8 *status) 7226 { 7227 u8 s; 7228 7229 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7230 return -EIO; 7231 7232 *status = s; 7233 7234 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7235 7236 return 0; 7237 } 7238 7239 static int volume_get_status(u8 *status) 7240 { 7241 return volume_get_status_ec(status); 7242 } 7243 7244 static int volume_set_status_ec(const u8 status) 7245 { 7246 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7247 return -EIO; 7248 7249 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7250 7251 /* 7252 * On X200s, and possibly on others, it can take a while for 7253 * reads to become correct. 7254 */ 7255 msleep(1); 7256 7257 return 0; 7258 } 7259 7260 static int volume_set_status(const u8 status) 7261 { 7262 return volume_set_status_ec(status); 7263 } 7264 7265 /* returns < 0 on error, 0 on no change, 1 on change */ 7266 static int __volume_set_mute_ec(const bool mute) 7267 { 7268 int rc; 7269 u8 s, n; 7270 7271 if (mutex_lock_killable(&volume_mutex) < 0) 7272 return -EINTR; 7273 7274 rc = volume_get_status_ec(&s); 7275 if (rc) 7276 goto unlock; 7277 7278 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7279 s & ~TP_EC_AUDIO_MUTESW_MSK; 7280 7281 if (n != s) { 7282 rc = volume_set_status_ec(n); 7283 if (!rc) 7284 rc = 1; 7285 } 7286 7287 unlock: 7288 mutex_unlock(&volume_mutex); 7289 return rc; 7290 } 7291 7292 static int volume_alsa_set_mute(const bool mute) 7293 { 7294 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7295 (mute) ? "" : "un"); 7296 return __volume_set_mute_ec(mute); 7297 } 7298 7299 static int volume_set_mute(const bool mute) 7300 { 7301 int rc; 7302 7303 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7304 (mute) ? "" : "un"); 7305 7306 rc = __volume_set_mute_ec(mute); 7307 return (rc < 0) ? rc : 0; 7308 } 7309 7310 /* returns < 0 on error, 0 on no change, 1 on change */ 7311 static int __volume_set_volume_ec(const u8 vol) 7312 { 7313 int rc; 7314 u8 s, n; 7315 7316 if (vol > TP_EC_VOLUME_MAX) 7317 return -EINVAL; 7318 7319 if (mutex_lock_killable(&volume_mutex) < 0) 7320 return -EINTR; 7321 7322 rc = volume_get_status_ec(&s); 7323 if (rc) 7324 goto unlock; 7325 7326 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7327 7328 if (n != s) { 7329 rc = volume_set_status_ec(n); 7330 if (!rc) 7331 rc = 1; 7332 } 7333 7334 unlock: 7335 mutex_unlock(&volume_mutex); 7336 return rc; 7337 } 7338 7339 static int volume_set_software_mute(bool startup) 7340 { 7341 int result; 7342 7343 if (!tpacpi_is_lenovo()) 7344 return -ENODEV; 7345 7346 if (startup) { 7347 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7348 "HAUM", "qd")) 7349 return -EIO; 7350 7351 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7352 "Initial HAUM setting was %d\n", 7353 software_mute_orig_mode); 7354 } 7355 7356 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7357 (int)TP_EC_MUTE_BTN_NONE)) 7358 return -EIO; 7359 7360 if (result != TP_EC_MUTE_BTN_NONE) 7361 pr_warn("Unexpected SAUM result %d\n", 7362 result); 7363 7364 /* 7365 * In software mute mode, the standard codec controls take 7366 * precendence, so we unmute the ThinkPad HW switch at 7367 * startup. Just on case there are SAUM-capable ThinkPads 7368 * with level controls, set max HW volume as well. 7369 */ 7370 if (tp_features.mixer_no_level_control) 7371 result = volume_set_mute(false); 7372 else 7373 result = volume_set_status(TP_EC_VOLUME_MAX); 7374 7375 if (result != 0) 7376 pr_warn("Failed to unmute the HW mute switch\n"); 7377 7378 return 0; 7379 } 7380 7381 static void volume_exit_software_mute(void) 7382 { 7383 int r; 7384 7385 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7386 || r != software_mute_orig_mode) 7387 pr_warn("Failed to restore mute mode\n"); 7388 } 7389 7390 static int volume_alsa_set_volume(const u8 vol) 7391 { 7392 dbg_printk(TPACPI_DBG_MIXER, 7393 "ALSA: trying to set volume level to %hu\n", vol); 7394 return __volume_set_volume_ec(vol); 7395 } 7396 7397 static void volume_alsa_notify_change(void) 7398 { 7399 struct tpacpi_alsa_data *d; 7400 7401 if (alsa_card && alsa_card->private_data) { 7402 d = alsa_card->private_data; 7403 if (d->ctl_mute_id) 7404 snd_ctl_notify(alsa_card, 7405 SNDRV_CTL_EVENT_MASK_VALUE, 7406 d->ctl_mute_id); 7407 if (d->ctl_vol_id) 7408 snd_ctl_notify(alsa_card, 7409 SNDRV_CTL_EVENT_MASK_VALUE, 7410 d->ctl_vol_id); 7411 } 7412 } 7413 7414 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7415 struct snd_ctl_elem_info *uinfo) 7416 { 7417 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7418 uinfo->count = 1; 7419 uinfo->value.integer.min = 0; 7420 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7421 return 0; 7422 } 7423 7424 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7425 struct snd_ctl_elem_value *ucontrol) 7426 { 7427 u8 s; 7428 int rc; 7429 7430 rc = volume_get_status(&s); 7431 if (rc < 0) 7432 return rc; 7433 7434 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7435 return 0; 7436 } 7437 7438 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7439 struct snd_ctl_elem_value *ucontrol) 7440 { 7441 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7442 ucontrol->value.integer.value[0]); 7443 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7444 } 7445 7446 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7447 7448 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7449 struct snd_ctl_elem_value *ucontrol) 7450 { 7451 u8 s; 7452 int rc; 7453 7454 rc = volume_get_status(&s); 7455 if (rc < 0) 7456 return rc; 7457 7458 ucontrol->value.integer.value[0] = 7459 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7460 return 0; 7461 } 7462 7463 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7464 struct snd_ctl_elem_value *ucontrol) 7465 { 7466 tpacpi_disclose_usertask("ALSA", "%smute\n", 7467 ucontrol->value.integer.value[0] ? 7468 "un" : ""); 7469 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7470 } 7471 7472 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7473 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7474 .name = "Console Playback Volume", 7475 .index = 0, 7476 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7477 .info = volume_alsa_vol_info, 7478 .get = volume_alsa_vol_get, 7479 }; 7480 7481 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7482 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7483 .name = "Console Playback Switch", 7484 .index = 0, 7485 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7486 .info = volume_alsa_mute_info, 7487 .get = volume_alsa_mute_get, 7488 }; 7489 7490 static void volume_suspend(void) 7491 { 7492 tpacpi_volume_checkpoint_nvram(); 7493 } 7494 7495 static void volume_resume(void) 7496 { 7497 if (software_mute_active) { 7498 if (volume_set_software_mute(false) < 0) 7499 pr_warn("Failed to restore software mute\n"); 7500 } else { 7501 volume_alsa_notify_change(); 7502 } 7503 } 7504 7505 static void volume_shutdown(void) 7506 { 7507 tpacpi_volume_checkpoint_nvram(); 7508 } 7509 7510 static void volume_exit(void) 7511 { 7512 if (alsa_card) { 7513 snd_card_free(alsa_card); 7514 alsa_card = NULL; 7515 } 7516 7517 tpacpi_volume_checkpoint_nvram(); 7518 7519 if (software_mute_active) 7520 volume_exit_software_mute(); 7521 } 7522 7523 static int __init volume_create_alsa_mixer(void) 7524 { 7525 struct snd_card *card; 7526 struct tpacpi_alsa_data *data; 7527 struct snd_kcontrol *ctl_vol; 7528 struct snd_kcontrol *ctl_mute; 7529 int rc; 7530 7531 rc = snd_card_new(&tpacpi_pdev->dev, 7532 alsa_index, alsa_id, THIS_MODULE, 7533 sizeof(struct tpacpi_alsa_data), &card); 7534 if (rc < 0 || !card) { 7535 pr_err("Failed to create ALSA card structures: %d\n", rc); 7536 return 1; 7537 } 7538 7539 BUG_ON(!card->private_data); 7540 data = card->private_data; 7541 data->card = card; 7542 7543 strlcpy(card->driver, TPACPI_ALSA_DRVNAME, 7544 sizeof(card->driver)); 7545 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME, 7546 sizeof(card->shortname)); 7547 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7548 (thinkpad_id.ec_version_str) ? 7549 thinkpad_id.ec_version_str : "(unknown)"); 7550 snprintf(card->longname, sizeof(card->longname), 7551 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7552 (thinkpad_id.ec_version_str) ? 7553 thinkpad_id.ec_version_str : "unknown"); 7554 7555 if (volume_control_allowed) { 7556 volume_alsa_control_vol.put = volume_alsa_vol_put; 7557 volume_alsa_control_vol.access = 7558 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7559 7560 volume_alsa_control_mute.put = volume_alsa_mute_put; 7561 volume_alsa_control_mute.access = 7562 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7563 } 7564 7565 if (!tp_features.mixer_no_level_control) { 7566 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7567 rc = snd_ctl_add(card, ctl_vol); 7568 if (rc < 0) { 7569 pr_err("Failed to create ALSA volume control: %d\n", 7570 rc); 7571 goto err_exit; 7572 } 7573 data->ctl_vol_id = &ctl_vol->id; 7574 } 7575 7576 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7577 rc = snd_ctl_add(card, ctl_mute); 7578 if (rc < 0) { 7579 pr_err("Failed to create ALSA mute control: %d\n", rc); 7580 goto err_exit; 7581 } 7582 data->ctl_mute_id = &ctl_mute->id; 7583 7584 rc = snd_card_register(card); 7585 if (rc < 0) { 7586 pr_err("Failed to register ALSA card: %d\n", rc); 7587 goto err_exit; 7588 } 7589 7590 alsa_card = card; 7591 return 0; 7592 7593 err_exit: 7594 snd_card_free(card); 7595 return 1; 7596 } 7597 7598 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7599 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7600 7601 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7602 /* Whitelist volume level on all IBM by default */ 7603 { .vendor = PCI_VENDOR_ID_IBM, 7604 .bios = TPACPI_MATCH_ANY, 7605 .ec = TPACPI_MATCH_ANY, 7606 .quirks = TPACPI_VOL_Q_LEVEL }, 7607 7608 /* Lenovo models with volume control (needs confirmation) */ 7609 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7610 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7611 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7612 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7613 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7614 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7615 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7616 7617 /* Whitelist mute-only on all Lenovo by default */ 7618 { .vendor = PCI_VENDOR_ID_LENOVO, 7619 .bios = TPACPI_MATCH_ANY, 7620 .ec = TPACPI_MATCH_ANY, 7621 .quirks = TPACPI_VOL_Q_MUTEONLY } 7622 }; 7623 7624 static int __init volume_init(struct ibm_init_struct *iibm) 7625 { 7626 unsigned long quirks; 7627 int rc; 7628 7629 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7630 7631 mutex_init(&volume_mutex); 7632 7633 /* 7634 * Check for module parameter bogosity, note that we 7635 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7636 * able to detect "unspecified" 7637 */ 7638 if (volume_mode > TPACPI_VOL_MODE_MAX) 7639 return -EINVAL; 7640 7641 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7642 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7643 TPACPI_MAIL); 7644 return 1; 7645 } 7646 7647 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7648 return -EINVAL; 7649 7650 /* 7651 * The ALSA mixer is our primary interface. 7652 * When disabled, don't install the subdriver at all 7653 */ 7654 if (!alsa_enable) { 7655 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7656 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7657 return 1; 7658 } 7659 7660 quirks = tpacpi_check_quirks(volume_quirk_table, 7661 ARRAY_SIZE(volume_quirk_table)); 7662 7663 switch (volume_capabilities) { 7664 case TPACPI_VOL_CAP_AUTO: 7665 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7666 tp_features.mixer_no_level_control = 1; 7667 else if (quirks & TPACPI_VOL_Q_LEVEL) 7668 tp_features.mixer_no_level_control = 0; 7669 else 7670 return 1; /* no mixer */ 7671 break; 7672 case TPACPI_VOL_CAP_VOLMUTE: 7673 tp_features.mixer_no_level_control = 0; 7674 break; 7675 case TPACPI_VOL_CAP_MUTEONLY: 7676 tp_features.mixer_no_level_control = 1; 7677 break; 7678 default: 7679 return 1; 7680 } 7681 7682 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7683 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7684 "using user-supplied volume_capabilities=%d\n", 7685 volume_capabilities); 7686 7687 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7688 volume_mode == TPACPI_VOL_MODE_MAX) { 7689 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7690 7691 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7692 "driver auto-selected volume_mode=%d\n", 7693 volume_mode); 7694 } else { 7695 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7696 "using user-supplied volume_mode=%d\n", 7697 volume_mode); 7698 } 7699 7700 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7701 "mute is supported, volume control is %s\n", 7702 str_supported(!tp_features.mixer_no_level_control)); 7703 7704 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7705 software_mute_active = true; 7706 } else { 7707 rc = volume_create_alsa_mixer(); 7708 if (rc) { 7709 pr_err("Could not create the ALSA mixer interface\n"); 7710 return rc; 7711 } 7712 7713 pr_info("Console audio control enabled, mode: %s\n", 7714 (volume_control_allowed) ? 7715 "override (read/write)" : 7716 "monitor (read only)"); 7717 } 7718 7719 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7720 "registering volume hotkeys as change notification\n"); 7721 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7722 | TP_ACPI_HKEY_VOLUP_MASK 7723 | TP_ACPI_HKEY_VOLDWN_MASK 7724 | TP_ACPI_HKEY_MUTE_MASK); 7725 7726 return 0; 7727 } 7728 7729 static int volume_read(struct seq_file *m) 7730 { 7731 u8 status; 7732 7733 if (volume_get_status(&status) < 0) { 7734 seq_printf(m, "level:\t\tunreadable\n"); 7735 } else { 7736 if (tp_features.mixer_no_level_control) 7737 seq_printf(m, "level:\t\tunsupported\n"); 7738 else 7739 seq_printf(m, "level:\t\t%d\n", 7740 status & TP_EC_AUDIO_LVL_MSK); 7741 7742 seq_printf(m, "mute:\t\t%s\n", 7743 onoff(status, TP_EC_AUDIO_MUTESW)); 7744 7745 if (volume_control_allowed) { 7746 seq_printf(m, "commands:\tunmute, mute\n"); 7747 if (!tp_features.mixer_no_level_control) { 7748 seq_printf(m, "commands:\tup, down\n"); 7749 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7750 TP_EC_VOLUME_MAX); 7751 } 7752 } 7753 } 7754 7755 return 0; 7756 } 7757 7758 static int volume_write(char *buf) 7759 { 7760 u8 s; 7761 u8 new_level, new_mute; 7762 int l; 7763 char *cmd; 7764 int rc; 7765 7766 /* 7767 * We do allow volume control at driver startup, so that the 7768 * user can set initial state through the volume=... parameter hack. 7769 */ 7770 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7771 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7772 tp_warned.volume_ctrl_forbidden = 1; 7773 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7774 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7775 } 7776 return -EPERM; 7777 } 7778 7779 rc = volume_get_status(&s); 7780 if (rc < 0) 7781 return rc; 7782 7783 new_level = s & TP_EC_AUDIO_LVL_MSK; 7784 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7785 7786 while ((cmd = next_cmd(&buf))) { 7787 if (!tp_features.mixer_no_level_control) { 7788 if (strlencmp(cmd, "up") == 0) { 7789 if (new_mute) 7790 new_mute = 0; 7791 else if (new_level < TP_EC_VOLUME_MAX) 7792 new_level++; 7793 continue; 7794 } else if (strlencmp(cmd, "down") == 0) { 7795 if (new_mute) 7796 new_mute = 0; 7797 else if (new_level > 0) 7798 new_level--; 7799 continue; 7800 } else if (sscanf(cmd, "level %u", &l) == 1 && 7801 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7802 new_level = l; 7803 continue; 7804 } 7805 } 7806 if (strlencmp(cmd, "mute") == 0) 7807 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7808 else if (strlencmp(cmd, "unmute") == 0) 7809 new_mute = 0; 7810 else 7811 return -EINVAL; 7812 } 7813 7814 if (tp_features.mixer_no_level_control) { 7815 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7816 new_mute ? "" : "un"); 7817 rc = volume_set_mute(!!new_mute); 7818 } else { 7819 tpacpi_disclose_usertask("procfs volume", 7820 "%smute and set level to %d\n", 7821 new_mute ? "" : "un", new_level); 7822 rc = volume_set_status(new_mute | new_level); 7823 } 7824 volume_alsa_notify_change(); 7825 7826 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7827 } 7828 7829 static struct ibm_struct volume_driver_data = { 7830 .name = "volume", 7831 .read = volume_read, 7832 .write = volume_write, 7833 .exit = volume_exit, 7834 .suspend = volume_suspend, 7835 .resume = volume_resume, 7836 .shutdown = volume_shutdown, 7837 }; 7838 7839 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7840 7841 #define alsa_card NULL 7842 7843 static inline void volume_alsa_notify_change(void) 7844 { 7845 } 7846 7847 static int __init volume_init(struct ibm_init_struct *iibm) 7848 { 7849 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7850 7851 return 1; 7852 } 7853 7854 static struct ibm_struct volume_driver_data = { 7855 .name = "volume", 7856 }; 7857 7858 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7859 7860 /************************************************************************* 7861 * Fan subdriver 7862 */ 7863 7864 /* 7865 * FAN ACCESS MODES 7866 * 7867 * TPACPI_FAN_RD_ACPI_GFAN: 7868 * ACPI GFAN method: returns fan level 7869 * 7870 * see TPACPI_FAN_WR_ACPI_SFAN 7871 * EC 0x2f (HFSP) not available if GFAN exists 7872 * 7873 * TPACPI_FAN_WR_ACPI_SFAN: 7874 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7875 * 7876 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7877 * it for writing. 7878 * 7879 * TPACPI_FAN_WR_TPEC: 7880 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7881 * Supported on almost all ThinkPads 7882 * 7883 * Fan speed changes of any sort (including those caused by the 7884 * disengaged mode) are usually done slowly by the firmware as the 7885 * maximum amount of fan duty cycle change per second seems to be 7886 * limited. 7887 * 7888 * Reading is not available if GFAN exists. 7889 * Writing is not available if SFAN exists. 7890 * 7891 * Bits 7892 * 7 automatic mode engaged; 7893 * (default operation mode of the ThinkPad) 7894 * fan level is ignored in this mode. 7895 * 6 full speed mode (takes precedence over bit 7); 7896 * not available on all thinkpads. May disable 7897 * the tachometer while the fan controller ramps up 7898 * the speed (which can take up to a few *minutes*). 7899 * Speeds up fan to 100% duty-cycle, which is far above 7900 * the standard RPM levels. It is not impossible that 7901 * it could cause hardware damage. 7902 * 5-3 unused in some models. Extra bits for fan level 7903 * in others, but still useless as all values above 7904 * 7 map to the same speed as level 7 in these models. 7905 * 2-0 fan level (0..7 usually) 7906 * 0x00 = stop 7907 * 0x07 = max (set when temperatures critical) 7908 * Some ThinkPads may have other levels, see 7909 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7910 * 7911 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7912 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7913 * does so, its initial value is meaningless (0x07). 7914 * 7915 * For firmware bugs, refer to: 7916 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7917 * 7918 * ---- 7919 * 7920 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7921 * Main fan tachometer reading (in RPM) 7922 * 7923 * This register is present on all ThinkPads with a new-style EC, and 7924 * it is known not to be present on the A21m/e, and T22, as there is 7925 * something else in offset 0x84 according to the ACPI DSDT. Other 7926 * ThinkPads from this same time period (and earlier) probably lack the 7927 * tachometer as well. 7928 * 7929 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 7930 * was never fixed by IBM to report the EC firmware version string 7931 * probably support the tachometer (like the early X models), so 7932 * detecting it is quite hard. We need more data to know for sure. 7933 * 7934 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 7935 * might result. 7936 * 7937 * FIRMWARE BUG: may go stale while the EC is switching to full speed 7938 * mode. 7939 * 7940 * For firmware bugs, refer to: 7941 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7942 * 7943 * ---- 7944 * 7945 * ThinkPad EC register 0x31 bit 0 (only on select models) 7946 * 7947 * When bit 0 of EC register 0x31 is zero, the tachometer registers 7948 * show the speed of the main fan. When bit 0 of EC register 0x31 7949 * is one, the tachometer registers show the speed of the auxiliary 7950 * fan. 7951 * 7952 * Fan control seems to affect both fans, regardless of the state 7953 * of this bit. 7954 * 7955 * So far, only the firmware for the X60/X61 non-tablet versions 7956 * seem to support this (firmware TP-7M). 7957 * 7958 * TPACPI_FAN_WR_ACPI_FANS: 7959 * ThinkPad X31, X40, X41. Not available in the X60. 7960 * 7961 * FANS ACPI handle: takes three arguments: low speed, medium speed, 7962 * high speed. ACPI DSDT seems to map these three speeds to levels 7963 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 7964 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 7965 * 7966 * The speeds are stored on handles 7967 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 7968 * 7969 * There are three default speed sets, accessible as handles: 7970 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 7971 * 7972 * ACPI DSDT switches which set is in use depending on various 7973 * factors. 7974 * 7975 * TPACPI_FAN_WR_TPEC is also available and should be used to 7976 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 7977 * but the ACPI tables just mention level 7. 7978 */ 7979 7980 enum { /* Fan control constants */ 7981 fan_status_offset = 0x2f, /* EC register 0x2f */ 7982 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 7983 * 0x84 must be read before 0x85 */ 7984 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 7985 bit 0 selects which fan is active */ 7986 7987 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 7988 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 7989 7990 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 7991 }; 7992 7993 enum fan_status_access_mode { 7994 TPACPI_FAN_NONE = 0, /* No fan status or control */ 7995 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 7996 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 7997 }; 7998 7999 enum fan_control_access_mode { 8000 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 8001 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 8002 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 8003 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 8004 }; 8005 8006 enum fan_control_commands { 8007 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 8008 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 8009 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 8010 * and also watchdog cmd */ 8011 }; 8012 8013 static bool fan_control_allowed; 8014 8015 static enum fan_status_access_mode fan_status_access_mode; 8016 static enum fan_control_access_mode fan_control_access_mode; 8017 static enum fan_control_commands fan_control_commands; 8018 8019 static u8 fan_control_initial_status; 8020 static u8 fan_control_desired_level; 8021 static u8 fan_control_resume_level; 8022 static int fan_watchdog_maxinterval; 8023 8024 static struct mutex fan_mutex; 8025 8026 static void fan_watchdog_fire(struct work_struct *ignored); 8027 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 8028 8029 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 8030 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 8031 "\\FSPD", /* 600e/x, 770e, 770x */ 8032 ); /* all others */ 8033 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 8034 "JFNS", /* 770x-JL */ 8035 ); /* all others */ 8036 8037 /* 8038 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 8039 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 8040 * be in auto mode (0x80). 8041 * 8042 * This is corrected by any write to HFSP either by the driver, or 8043 * by the firmware. 8044 * 8045 * We assume 0x07 really means auto mode while this quirk is active, 8046 * as this is far more likely than the ThinkPad being in level 7, 8047 * which is only used by the firmware during thermal emergencies. 8048 * 8049 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8050 * TP-70 (T43, R52), which are known to be buggy. 8051 */ 8052 8053 static void fan_quirk1_setup(void) 8054 { 8055 if (fan_control_initial_status == 0x07) { 8056 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8057 tp_features.fan_ctrl_status_undef = 1; 8058 } 8059 } 8060 8061 static void fan_quirk1_handle(u8 *fan_status) 8062 { 8063 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8064 if (*fan_status != fan_control_initial_status) { 8065 /* something changed the HFSP regisnter since 8066 * driver init time, so it is not undefined 8067 * anymore */ 8068 tp_features.fan_ctrl_status_undef = 0; 8069 } else { 8070 /* Return most likely status. In fact, it 8071 * might be the only possible status */ 8072 *fan_status = TP_EC_FAN_AUTO; 8073 } 8074 } 8075 } 8076 8077 /* Select main fan on X60/X61, NOOP on others */ 8078 static bool fan_select_fan1(void) 8079 { 8080 if (tp_features.second_fan) { 8081 u8 val; 8082 8083 if (ec_read(fan_select_offset, &val) < 0) 8084 return false; 8085 val &= 0xFEU; 8086 if (ec_write(fan_select_offset, val) < 0) 8087 return false; 8088 } 8089 return true; 8090 } 8091 8092 /* Select secondary fan on X60/X61 */ 8093 static bool fan_select_fan2(void) 8094 { 8095 u8 val; 8096 8097 if (!tp_features.second_fan) 8098 return false; 8099 8100 if (ec_read(fan_select_offset, &val) < 0) 8101 return false; 8102 val |= 0x01U; 8103 if (ec_write(fan_select_offset, val) < 0) 8104 return false; 8105 8106 return true; 8107 } 8108 8109 /* 8110 * Call with fan_mutex held 8111 */ 8112 static void fan_update_desired_level(u8 status) 8113 { 8114 if ((status & 8115 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8116 if (status > 7) 8117 fan_control_desired_level = 7; 8118 else 8119 fan_control_desired_level = status; 8120 } 8121 } 8122 8123 static int fan_get_status(u8 *status) 8124 { 8125 u8 s; 8126 8127 /* TODO: 8128 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8129 8130 switch (fan_status_access_mode) { 8131 case TPACPI_FAN_RD_ACPI_GFAN: { 8132 /* 570, 600e/x, 770e, 770x */ 8133 int res; 8134 8135 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8136 return -EIO; 8137 8138 if (likely(status)) 8139 *status = res & 0x07; 8140 8141 break; 8142 } 8143 case TPACPI_FAN_RD_TPEC: 8144 /* all except 570, 600e/x, 770e, 770x */ 8145 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8146 return -EIO; 8147 8148 if (likely(status)) { 8149 *status = s; 8150 fan_quirk1_handle(status); 8151 } 8152 8153 break; 8154 8155 default: 8156 return -ENXIO; 8157 } 8158 8159 return 0; 8160 } 8161 8162 static int fan_get_status_safe(u8 *status) 8163 { 8164 int rc; 8165 u8 s; 8166 8167 if (mutex_lock_killable(&fan_mutex)) 8168 return -ERESTARTSYS; 8169 rc = fan_get_status(&s); 8170 if (!rc) 8171 fan_update_desired_level(s); 8172 mutex_unlock(&fan_mutex); 8173 8174 if (rc) 8175 return rc; 8176 if (status) 8177 *status = s; 8178 8179 return 0; 8180 } 8181 8182 static int fan_get_speed(unsigned int *speed) 8183 { 8184 u8 hi, lo; 8185 8186 switch (fan_status_access_mode) { 8187 case TPACPI_FAN_RD_TPEC: 8188 /* all except 570, 600e/x, 770e, 770x */ 8189 if (unlikely(!fan_select_fan1())) 8190 return -EIO; 8191 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8192 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8193 return -EIO; 8194 8195 if (likely(speed)) 8196 *speed = (hi << 8) | lo; 8197 8198 break; 8199 8200 default: 8201 return -ENXIO; 8202 } 8203 8204 return 0; 8205 } 8206 8207 static int fan2_get_speed(unsigned int *speed) 8208 { 8209 u8 hi, lo; 8210 bool rc; 8211 8212 switch (fan_status_access_mode) { 8213 case TPACPI_FAN_RD_TPEC: 8214 /* all except 570, 600e/x, 770e, 770x */ 8215 if (unlikely(!fan_select_fan2())) 8216 return -EIO; 8217 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8218 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8219 fan_select_fan1(); /* play it safe */ 8220 if (rc) 8221 return -EIO; 8222 8223 if (likely(speed)) 8224 *speed = (hi << 8) | lo; 8225 8226 break; 8227 8228 default: 8229 return -ENXIO; 8230 } 8231 8232 return 0; 8233 } 8234 8235 static int fan_set_level(int level) 8236 { 8237 if (!fan_control_allowed) 8238 return -EPERM; 8239 8240 switch (fan_control_access_mode) { 8241 case TPACPI_FAN_WR_ACPI_SFAN: 8242 if (level >= 0 && level <= 7) { 8243 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8244 return -EIO; 8245 } else 8246 return -EINVAL; 8247 break; 8248 8249 case TPACPI_FAN_WR_ACPI_FANS: 8250 case TPACPI_FAN_WR_TPEC: 8251 if (!(level & TP_EC_FAN_AUTO) && 8252 !(level & TP_EC_FAN_FULLSPEED) && 8253 ((level < 0) || (level > 7))) 8254 return -EINVAL; 8255 8256 /* safety net should the EC not support AUTO 8257 * or FULLSPEED mode bits and just ignore them */ 8258 if (level & TP_EC_FAN_FULLSPEED) 8259 level |= 7; /* safety min speed 7 */ 8260 else if (level & TP_EC_FAN_AUTO) 8261 level |= 4; /* safety min speed 4 */ 8262 8263 if (!acpi_ec_write(fan_status_offset, level)) 8264 return -EIO; 8265 else 8266 tp_features.fan_ctrl_status_undef = 0; 8267 break; 8268 8269 default: 8270 return -ENXIO; 8271 } 8272 8273 vdbg_printk(TPACPI_DBG_FAN, 8274 "fan control: set fan control register to 0x%02x\n", level); 8275 return 0; 8276 } 8277 8278 static int fan_set_level_safe(int level) 8279 { 8280 int rc; 8281 8282 if (!fan_control_allowed) 8283 return -EPERM; 8284 8285 if (mutex_lock_killable(&fan_mutex)) 8286 return -ERESTARTSYS; 8287 8288 if (level == TPACPI_FAN_LAST_LEVEL) 8289 level = fan_control_desired_level; 8290 8291 rc = fan_set_level(level); 8292 if (!rc) 8293 fan_update_desired_level(level); 8294 8295 mutex_unlock(&fan_mutex); 8296 return rc; 8297 } 8298 8299 static int fan_set_enable(void) 8300 { 8301 u8 s; 8302 int rc; 8303 8304 if (!fan_control_allowed) 8305 return -EPERM; 8306 8307 if (mutex_lock_killable(&fan_mutex)) 8308 return -ERESTARTSYS; 8309 8310 switch (fan_control_access_mode) { 8311 case TPACPI_FAN_WR_ACPI_FANS: 8312 case TPACPI_FAN_WR_TPEC: 8313 rc = fan_get_status(&s); 8314 if (rc < 0) 8315 break; 8316 8317 /* Don't go out of emergency fan mode */ 8318 if (s != 7) { 8319 s &= 0x07; 8320 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8321 } 8322 8323 if (!acpi_ec_write(fan_status_offset, s)) 8324 rc = -EIO; 8325 else { 8326 tp_features.fan_ctrl_status_undef = 0; 8327 rc = 0; 8328 } 8329 break; 8330 8331 case TPACPI_FAN_WR_ACPI_SFAN: 8332 rc = fan_get_status(&s); 8333 if (rc < 0) 8334 break; 8335 8336 s &= 0x07; 8337 8338 /* Set fan to at least level 4 */ 8339 s |= 4; 8340 8341 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8342 rc = -EIO; 8343 else 8344 rc = 0; 8345 break; 8346 8347 default: 8348 rc = -ENXIO; 8349 } 8350 8351 mutex_unlock(&fan_mutex); 8352 8353 if (!rc) 8354 vdbg_printk(TPACPI_DBG_FAN, 8355 "fan control: set fan control register to 0x%02x\n", 8356 s); 8357 return rc; 8358 } 8359 8360 static int fan_set_disable(void) 8361 { 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 rc = 0; 8371 switch (fan_control_access_mode) { 8372 case TPACPI_FAN_WR_ACPI_FANS: 8373 case TPACPI_FAN_WR_TPEC: 8374 if (!acpi_ec_write(fan_status_offset, 0x00)) 8375 rc = -EIO; 8376 else { 8377 fan_control_desired_level = 0; 8378 tp_features.fan_ctrl_status_undef = 0; 8379 } 8380 break; 8381 8382 case TPACPI_FAN_WR_ACPI_SFAN: 8383 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8384 rc = -EIO; 8385 else 8386 fan_control_desired_level = 0; 8387 break; 8388 8389 default: 8390 rc = -ENXIO; 8391 } 8392 8393 if (!rc) 8394 vdbg_printk(TPACPI_DBG_FAN, 8395 "fan control: set fan control register to 0\n"); 8396 8397 mutex_unlock(&fan_mutex); 8398 return rc; 8399 } 8400 8401 static int fan_set_speed(int speed) 8402 { 8403 int rc; 8404 8405 if (!fan_control_allowed) 8406 return -EPERM; 8407 8408 if (mutex_lock_killable(&fan_mutex)) 8409 return -ERESTARTSYS; 8410 8411 rc = 0; 8412 switch (fan_control_access_mode) { 8413 case TPACPI_FAN_WR_ACPI_FANS: 8414 if (speed >= 0 && speed <= 65535) { 8415 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8416 speed, speed, speed)) 8417 rc = -EIO; 8418 } else 8419 rc = -EINVAL; 8420 break; 8421 8422 default: 8423 rc = -ENXIO; 8424 } 8425 8426 mutex_unlock(&fan_mutex); 8427 return rc; 8428 } 8429 8430 static void fan_watchdog_reset(void) 8431 { 8432 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8433 return; 8434 8435 if (fan_watchdog_maxinterval > 0 && 8436 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8437 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8438 msecs_to_jiffies(fan_watchdog_maxinterval * 1000)); 8439 else 8440 cancel_delayed_work(&fan_watchdog_task); 8441 } 8442 8443 static void fan_watchdog_fire(struct work_struct *ignored) 8444 { 8445 int rc; 8446 8447 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8448 return; 8449 8450 pr_notice("fan watchdog: enabling fan\n"); 8451 rc = fan_set_enable(); 8452 if (rc < 0) { 8453 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8454 rc); 8455 /* reschedule for later */ 8456 fan_watchdog_reset(); 8457 } 8458 } 8459 8460 /* 8461 * SYSFS fan layout: hwmon compatible (device) 8462 * 8463 * pwm*_enable: 8464 * 0: "disengaged" mode 8465 * 1: manual mode 8466 * 2: native EC "auto" mode (recommended, hardware default) 8467 * 8468 * pwm*: set speed in manual mode, ignored otherwise. 8469 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8470 * interpolation. 8471 * 8472 * fan*_input: tachometer reading, RPM 8473 * 8474 * 8475 * SYSFS fan layout: extensions 8476 * 8477 * fan_watchdog (driver): 8478 * fan watchdog interval in seconds, 0 disables (default), max 120 8479 */ 8480 8481 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8482 static ssize_t fan_pwm1_enable_show(struct device *dev, 8483 struct device_attribute *attr, 8484 char *buf) 8485 { 8486 int res, mode; 8487 u8 status; 8488 8489 res = fan_get_status_safe(&status); 8490 if (res) 8491 return res; 8492 8493 if (status & TP_EC_FAN_FULLSPEED) { 8494 mode = 0; 8495 } else if (status & TP_EC_FAN_AUTO) { 8496 mode = 2; 8497 } else 8498 mode = 1; 8499 8500 return snprintf(buf, PAGE_SIZE, "%d\n", mode); 8501 } 8502 8503 static ssize_t fan_pwm1_enable_store(struct device *dev, 8504 struct device_attribute *attr, 8505 const char *buf, size_t count) 8506 { 8507 unsigned long t; 8508 int res, level; 8509 8510 if (parse_strtoul(buf, 2, &t)) 8511 return -EINVAL; 8512 8513 tpacpi_disclose_usertask("hwmon pwm1_enable", 8514 "set fan mode to %lu\n", t); 8515 8516 switch (t) { 8517 case 0: 8518 level = TP_EC_FAN_FULLSPEED; 8519 break; 8520 case 1: 8521 level = TPACPI_FAN_LAST_LEVEL; 8522 break; 8523 case 2: 8524 level = TP_EC_FAN_AUTO; 8525 break; 8526 case 3: 8527 /* reserved for software-controlled auto mode */ 8528 return -ENOSYS; 8529 default: 8530 return -EINVAL; 8531 } 8532 8533 res = fan_set_level_safe(level); 8534 if (res == -ENXIO) 8535 return -EINVAL; 8536 else if (res < 0) 8537 return res; 8538 8539 fan_watchdog_reset(); 8540 8541 return count; 8542 } 8543 8544 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8545 fan_pwm1_enable_show, fan_pwm1_enable_store); 8546 8547 /* sysfs fan pwm1 ------------------------------------------------------ */ 8548 static ssize_t fan_pwm1_show(struct device *dev, 8549 struct device_attribute *attr, 8550 char *buf) 8551 { 8552 int res; 8553 u8 status; 8554 8555 res = fan_get_status_safe(&status); 8556 if (res) 8557 return res; 8558 8559 if ((status & 8560 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8561 status = fan_control_desired_level; 8562 8563 if (status > 7) 8564 status = 7; 8565 8566 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); 8567 } 8568 8569 static ssize_t fan_pwm1_store(struct device *dev, 8570 struct device_attribute *attr, 8571 const char *buf, size_t count) 8572 { 8573 unsigned long s; 8574 int rc; 8575 u8 status, newlevel; 8576 8577 if (parse_strtoul(buf, 255, &s)) 8578 return -EINVAL; 8579 8580 tpacpi_disclose_usertask("hwmon pwm1", 8581 "set fan speed to %lu\n", s); 8582 8583 /* scale down from 0-255 to 0-7 */ 8584 newlevel = (s >> 5) & 0x07; 8585 8586 if (mutex_lock_killable(&fan_mutex)) 8587 return -ERESTARTSYS; 8588 8589 rc = fan_get_status(&status); 8590 if (!rc && (status & 8591 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8592 rc = fan_set_level(newlevel); 8593 if (rc == -ENXIO) 8594 rc = -EINVAL; 8595 else if (!rc) { 8596 fan_update_desired_level(newlevel); 8597 fan_watchdog_reset(); 8598 } 8599 } 8600 8601 mutex_unlock(&fan_mutex); 8602 return (rc) ? rc : count; 8603 } 8604 8605 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8606 8607 /* sysfs fan fan1_input ------------------------------------------------ */ 8608 static ssize_t fan_fan1_input_show(struct device *dev, 8609 struct device_attribute *attr, 8610 char *buf) 8611 { 8612 int res; 8613 unsigned int speed; 8614 8615 res = fan_get_speed(&speed); 8616 if (res < 0) 8617 return res; 8618 8619 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8620 } 8621 8622 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8623 8624 /* sysfs fan fan2_input ------------------------------------------------ */ 8625 static ssize_t fan_fan2_input_show(struct device *dev, 8626 struct device_attribute *attr, 8627 char *buf) 8628 { 8629 int res; 8630 unsigned int speed; 8631 8632 res = fan2_get_speed(&speed); 8633 if (res < 0) 8634 return res; 8635 8636 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 8637 } 8638 8639 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8640 8641 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8642 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8643 { 8644 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); 8645 } 8646 8647 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8648 size_t count) 8649 { 8650 unsigned long t; 8651 8652 if (parse_strtoul(buf, 120, &t)) 8653 return -EINVAL; 8654 8655 if (!fan_control_allowed) 8656 return -EPERM; 8657 8658 fan_watchdog_maxinterval = t; 8659 fan_watchdog_reset(); 8660 8661 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8662 8663 return count; 8664 } 8665 static DRIVER_ATTR_RW(fan_watchdog); 8666 8667 /* --------------------------------------------------------------------- */ 8668 static struct attribute *fan_attributes[] = { 8669 &dev_attr_pwm1_enable.attr, &dev_attr_pwm1.attr, 8670 &dev_attr_fan1_input.attr, 8671 NULL, /* for fan2_input */ 8672 NULL 8673 }; 8674 8675 static const struct attribute_group fan_attr_group = { 8676 .attrs = fan_attributes, 8677 }; 8678 8679 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ 8680 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8681 8682 #define TPACPI_FAN_QI(__id1, __id2, __quirks) \ 8683 { .vendor = PCI_VENDOR_ID_IBM, \ 8684 .bios = TPACPI_MATCH_ANY, \ 8685 .ec = TPID(__id1, __id2), \ 8686 .quirks = __quirks } 8687 8688 #define TPACPI_FAN_QL(__id1, __id2, __quirks) \ 8689 { .vendor = PCI_VENDOR_ID_LENOVO, \ 8690 .bios = TPACPI_MATCH_ANY, \ 8691 .ec = TPID(__id1, __id2), \ 8692 .quirks = __quirks } 8693 8694 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8695 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1), 8696 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1), 8697 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1), 8698 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1), 8699 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN), 8700 }; 8701 8702 #undef TPACPI_FAN_QL 8703 #undef TPACPI_FAN_QI 8704 8705 static int __init fan_init(struct ibm_init_struct *iibm) 8706 { 8707 int rc; 8708 unsigned long quirks; 8709 8710 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8711 "initializing fan subdriver\n"); 8712 8713 mutex_init(&fan_mutex); 8714 fan_status_access_mode = TPACPI_FAN_NONE; 8715 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8716 fan_control_commands = 0; 8717 fan_watchdog_maxinterval = 0; 8718 tp_features.fan_ctrl_status_undef = 0; 8719 tp_features.second_fan = 0; 8720 fan_control_desired_level = 7; 8721 8722 if (tpacpi_is_ibm()) { 8723 TPACPI_ACPIHANDLE_INIT(fans); 8724 TPACPI_ACPIHANDLE_INIT(gfan); 8725 TPACPI_ACPIHANDLE_INIT(sfan); 8726 } 8727 8728 quirks = tpacpi_check_quirks(fan_quirk_table, 8729 ARRAY_SIZE(fan_quirk_table)); 8730 8731 if (gfan_handle) { 8732 /* 570, 600e/x, 770e, 770x */ 8733 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8734 } else { 8735 /* all other ThinkPads: note that even old-style 8736 * ThinkPad ECs supports the fan control register */ 8737 if (likely(acpi_ec_read(fan_status_offset, 8738 &fan_control_initial_status))) { 8739 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 8740 if (quirks & TPACPI_FAN_Q1) 8741 fan_quirk1_setup(); 8742 if (quirks & TPACPI_FAN_2FAN) { 8743 tp_features.second_fan = 1; 8744 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8745 "secondary fan support enabled\n"); 8746 } 8747 } else { 8748 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8749 return 1; 8750 } 8751 } 8752 8753 if (sfan_handle) { 8754 /* 570, 770x-JL */ 8755 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8756 fan_control_commands |= 8757 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8758 } else { 8759 if (!gfan_handle) { 8760 /* gfan without sfan means no fan control */ 8761 /* all other models implement TP EC 0x2f control */ 8762 8763 if (fans_handle) { 8764 /* X31, X40, X41 */ 8765 fan_control_access_mode = 8766 TPACPI_FAN_WR_ACPI_FANS; 8767 fan_control_commands |= 8768 TPACPI_FAN_CMD_SPEED | 8769 TPACPI_FAN_CMD_LEVEL | 8770 TPACPI_FAN_CMD_ENABLE; 8771 } else { 8772 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8773 fan_control_commands |= 8774 TPACPI_FAN_CMD_LEVEL | 8775 TPACPI_FAN_CMD_ENABLE; 8776 } 8777 } 8778 } 8779 8780 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8781 "fan is %s, modes %d, %d\n", 8782 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 8783 fan_control_access_mode != TPACPI_FAN_WR_NONE), 8784 fan_status_access_mode, fan_control_access_mode); 8785 8786 /* fan control master switch */ 8787 if (!fan_control_allowed) { 8788 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8789 fan_control_commands = 0; 8790 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8791 "fan control features disabled by parameter\n"); 8792 } 8793 8794 /* update fan_control_desired_level */ 8795 if (fan_status_access_mode != TPACPI_FAN_NONE) 8796 fan_get_status_safe(NULL); 8797 8798 if (fan_status_access_mode != TPACPI_FAN_NONE || 8799 fan_control_access_mode != TPACPI_FAN_WR_NONE) { 8800 if (tp_features.second_fan) { 8801 /* attach second fan tachometer */ 8802 fan_attributes[ARRAY_SIZE(fan_attributes)-2] = 8803 &dev_attr_fan2_input.attr; 8804 } 8805 rc = sysfs_create_group(&tpacpi_hwmon->kobj, 8806 &fan_attr_group); 8807 if (rc < 0) 8808 return rc; 8809 8810 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, 8811 &driver_attr_fan_watchdog); 8812 if (rc < 0) { 8813 sysfs_remove_group(&tpacpi_hwmon->kobj, 8814 &fan_attr_group); 8815 return rc; 8816 } 8817 return 0; 8818 } else 8819 return 1; 8820 } 8821 8822 static void fan_exit(void) 8823 { 8824 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 8825 "cancelling any pending fan watchdog tasks\n"); 8826 8827 /* FIXME: can we really do this unconditionally? */ 8828 sysfs_remove_group(&tpacpi_hwmon->kobj, &fan_attr_group); 8829 driver_remove_file(&tpacpi_hwmon_pdriver.driver, 8830 &driver_attr_fan_watchdog); 8831 8832 cancel_delayed_work(&fan_watchdog_task); 8833 flush_workqueue(tpacpi_wq); 8834 } 8835 8836 static void fan_suspend(void) 8837 { 8838 int rc; 8839 8840 if (!fan_control_allowed) 8841 return; 8842 8843 /* Store fan status in cache */ 8844 fan_control_resume_level = 0; 8845 rc = fan_get_status_safe(&fan_control_resume_level); 8846 if (rc < 0) 8847 pr_notice("failed to read fan level for later restore during resume: %d\n", 8848 rc); 8849 8850 /* if it is undefined, don't attempt to restore it. 8851 * KEEP THIS LAST */ 8852 if (tp_features.fan_ctrl_status_undef) 8853 fan_control_resume_level = 0; 8854 } 8855 8856 static void fan_resume(void) 8857 { 8858 u8 current_level = 7; 8859 bool do_set = false; 8860 int rc; 8861 8862 /* DSDT *always* updates status on resume */ 8863 tp_features.fan_ctrl_status_undef = 0; 8864 8865 if (!fan_control_allowed || 8866 !fan_control_resume_level || 8867 (fan_get_status_safe(¤t_level) < 0)) 8868 return; 8869 8870 switch (fan_control_access_mode) { 8871 case TPACPI_FAN_WR_ACPI_SFAN: 8872 /* never decrease fan level */ 8873 do_set = (fan_control_resume_level > current_level); 8874 break; 8875 case TPACPI_FAN_WR_ACPI_FANS: 8876 case TPACPI_FAN_WR_TPEC: 8877 /* never decrease fan level, scale is: 8878 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 8879 * 8880 * We expect the firmware to set either 7 or AUTO, but we 8881 * handle FULLSPEED out of paranoia. 8882 * 8883 * So, we can safely only restore FULLSPEED or 7, anything 8884 * else could slow the fan. Restoring AUTO is useless, at 8885 * best that's exactly what the DSDT already set (it is the 8886 * slower it uses). 8887 * 8888 * Always keep in mind that the DSDT *will* have set the 8889 * fans to what the vendor supposes is the best level. We 8890 * muck with it only to speed the fan up. 8891 */ 8892 if (fan_control_resume_level != 7 && 8893 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 8894 return; 8895 else 8896 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 8897 (current_level != fan_control_resume_level); 8898 break; 8899 default: 8900 return; 8901 } 8902 if (do_set) { 8903 pr_notice("restoring fan level to 0x%02x\n", 8904 fan_control_resume_level); 8905 rc = fan_set_level_safe(fan_control_resume_level); 8906 if (rc < 0) 8907 pr_notice("failed to restore fan level: %d\n", rc); 8908 } 8909 } 8910 8911 static int fan_read(struct seq_file *m) 8912 { 8913 int rc; 8914 u8 status; 8915 unsigned int speed = 0; 8916 8917 switch (fan_status_access_mode) { 8918 case TPACPI_FAN_RD_ACPI_GFAN: 8919 /* 570, 600e/x, 770e, 770x */ 8920 rc = fan_get_status_safe(&status); 8921 if (rc < 0) 8922 return rc; 8923 8924 seq_printf(m, "status:\t\t%s\n" 8925 "level:\t\t%d\n", 8926 (status != 0) ? "enabled" : "disabled", status); 8927 break; 8928 8929 case TPACPI_FAN_RD_TPEC: 8930 /* all except 570, 600e/x, 770e, 770x */ 8931 rc = fan_get_status_safe(&status); 8932 if (rc < 0) 8933 return rc; 8934 8935 seq_printf(m, "status:\t\t%s\n", 8936 (status != 0) ? "enabled" : "disabled"); 8937 8938 rc = fan_get_speed(&speed); 8939 if (rc < 0) 8940 return rc; 8941 8942 seq_printf(m, "speed:\t\t%d\n", speed); 8943 8944 if (status & TP_EC_FAN_FULLSPEED) 8945 /* Disengaged mode takes precedence */ 8946 seq_printf(m, "level:\t\tdisengaged\n"); 8947 else if (status & TP_EC_FAN_AUTO) 8948 seq_printf(m, "level:\t\tauto\n"); 8949 else 8950 seq_printf(m, "level:\t\t%d\n", status); 8951 break; 8952 8953 case TPACPI_FAN_NONE: 8954 default: 8955 seq_printf(m, "status:\t\tnot supported\n"); 8956 } 8957 8958 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 8959 seq_printf(m, "commands:\tlevel <level>"); 8960 8961 switch (fan_control_access_mode) { 8962 case TPACPI_FAN_WR_ACPI_SFAN: 8963 seq_printf(m, " (<level> is 0-7)\n"); 8964 break; 8965 8966 default: 8967 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 8968 break; 8969 } 8970 } 8971 8972 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 8973 seq_printf(m, "commands:\tenable, disable\n" 8974 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 8975 8976 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 8977 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 8978 8979 return 0; 8980 } 8981 8982 static int fan_write_cmd_level(const char *cmd, int *rc) 8983 { 8984 int level; 8985 8986 if (strlencmp(cmd, "level auto") == 0) 8987 level = TP_EC_FAN_AUTO; 8988 else if ((strlencmp(cmd, "level disengaged") == 0) | 8989 (strlencmp(cmd, "level full-speed") == 0)) 8990 level = TP_EC_FAN_FULLSPEED; 8991 else if (sscanf(cmd, "level %d", &level) != 1) 8992 return 0; 8993 8994 *rc = fan_set_level_safe(level); 8995 if (*rc == -ENXIO) 8996 pr_err("level command accepted for unsupported access mode %d\n", 8997 fan_control_access_mode); 8998 else if (!*rc) 8999 tpacpi_disclose_usertask("procfs fan", 9000 "set level to %d\n", level); 9001 9002 return 1; 9003 } 9004 9005 static int fan_write_cmd_enable(const char *cmd, int *rc) 9006 { 9007 if (strlencmp(cmd, "enable") != 0) 9008 return 0; 9009 9010 *rc = fan_set_enable(); 9011 if (*rc == -ENXIO) 9012 pr_err("enable command accepted for unsupported access mode %d\n", 9013 fan_control_access_mode); 9014 else if (!*rc) 9015 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9016 9017 return 1; 9018 } 9019 9020 static int fan_write_cmd_disable(const char *cmd, int *rc) 9021 { 9022 if (strlencmp(cmd, "disable") != 0) 9023 return 0; 9024 9025 *rc = fan_set_disable(); 9026 if (*rc == -ENXIO) 9027 pr_err("disable command accepted for unsupported access mode %d\n", 9028 fan_control_access_mode); 9029 else if (!*rc) 9030 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9031 9032 return 1; 9033 } 9034 9035 static int fan_write_cmd_speed(const char *cmd, int *rc) 9036 { 9037 int speed; 9038 9039 /* TODO: 9040 * Support speed <low> <medium> <high> ? */ 9041 9042 if (sscanf(cmd, "speed %d", &speed) != 1) 9043 return 0; 9044 9045 *rc = fan_set_speed(speed); 9046 if (*rc == -ENXIO) 9047 pr_err("speed command accepted for unsupported access mode %d\n", 9048 fan_control_access_mode); 9049 else if (!*rc) 9050 tpacpi_disclose_usertask("procfs fan", 9051 "set speed to %d\n", speed); 9052 9053 return 1; 9054 } 9055 9056 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9057 { 9058 int interval; 9059 9060 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9061 return 0; 9062 9063 if (interval < 0 || interval > 120) 9064 *rc = -EINVAL; 9065 else { 9066 fan_watchdog_maxinterval = interval; 9067 tpacpi_disclose_usertask("procfs fan", 9068 "set watchdog timer to %d\n", 9069 interval); 9070 } 9071 9072 return 1; 9073 } 9074 9075 static int fan_write(char *buf) 9076 { 9077 char *cmd; 9078 int rc = 0; 9079 9080 while (!rc && (cmd = next_cmd(&buf))) { 9081 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9082 fan_write_cmd_level(cmd, &rc)) && 9083 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9084 (fan_write_cmd_enable(cmd, &rc) || 9085 fan_write_cmd_disable(cmd, &rc) || 9086 fan_write_cmd_watchdog(cmd, &rc))) && 9087 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9088 fan_write_cmd_speed(cmd, &rc)) 9089 ) 9090 rc = -EINVAL; 9091 else if (!rc) 9092 fan_watchdog_reset(); 9093 } 9094 9095 return rc; 9096 } 9097 9098 static struct ibm_struct fan_driver_data = { 9099 .name = "fan", 9100 .read = fan_read, 9101 .write = fan_write, 9102 .exit = fan_exit, 9103 .suspend = fan_suspend, 9104 .resume = fan_resume, 9105 }; 9106 9107 /************************************************************************* 9108 * Mute LED subdriver 9109 */ 9110 9111 9112 struct tp_led_table { 9113 acpi_string name; 9114 int on_value; 9115 int off_value; 9116 int state; 9117 }; 9118 9119 static struct tp_led_table led_tables[] = { 9120 [TPACPI_LED_MUTE] = { 9121 .name = "SSMS", 9122 .on_value = 1, 9123 .off_value = 0, 9124 }, 9125 [TPACPI_LED_MICMUTE] = { 9126 .name = "MMTS", 9127 .on_value = 2, 9128 .off_value = 0, 9129 }, 9130 }; 9131 9132 static int mute_led_on_off(struct tp_led_table *t, bool state) 9133 { 9134 acpi_handle temp; 9135 int output; 9136 9137 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9138 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9139 return -EIO; 9140 } 9141 9142 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9143 state ? t->on_value : t->off_value)) 9144 return -EIO; 9145 9146 t->state = state; 9147 return state; 9148 } 9149 9150 int tpacpi_led_set(int whichled, bool on) 9151 { 9152 struct tp_led_table *t; 9153 9154 if (whichled < 0 || whichled >= TPACPI_LED_MAX) 9155 return -EINVAL; 9156 9157 t = &led_tables[whichled]; 9158 if (t->state < 0 || t->state == on) 9159 return t->state; 9160 return mute_led_on_off(t, on); 9161 } 9162 EXPORT_SYMBOL_GPL(tpacpi_led_set); 9163 9164 static int mute_led_init(struct ibm_init_struct *iibm) 9165 { 9166 acpi_handle temp; 9167 int i; 9168 9169 for (i = 0; i < TPACPI_LED_MAX; i++) { 9170 struct tp_led_table *t = &led_tables[i]; 9171 if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp))) 9172 mute_led_on_off(t, false); 9173 else 9174 t->state = -ENODEV; 9175 } 9176 return 0; 9177 } 9178 9179 static void mute_led_exit(void) 9180 { 9181 int i; 9182 9183 for (i = 0; i < TPACPI_LED_MAX; i++) 9184 tpacpi_led_set(i, false); 9185 } 9186 9187 static void mute_led_resume(void) 9188 { 9189 int i; 9190 9191 for (i = 0; i < TPACPI_LED_MAX; i++) { 9192 struct tp_led_table *t = &led_tables[i]; 9193 if (t->state >= 0) 9194 mute_led_on_off(t, t->state); 9195 } 9196 } 9197 9198 static struct ibm_struct mute_led_driver_data = { 9199 .name = "mute_led", 9200 .exit = mute_led_exit, 9201 .resume = mute_led_resume, 9202 }; 9203 9204 /**************************************************************************** 9205 **************************************************************************** 9206 * 9207 * Infrastructure 9208 * 9209 **************************************************************************** 9210 ****************************************************************************/ 9211 9212 /* 9213 * HKEY event callout for other subdrivers go here 9214 * (yes, it is ugly, but it is quick, safe, and gets the job done 9215 */ 9216 static void tpacpi_driver_event(const unsigned int hkey_event) 9217 { 9218 if (ibm_backlight_device) { 9219 switch (hkey_event) { 9220 case TP_HKEY_EV_BRGHT_UP: 9221 case TP_HKEY_EV_BRGHT_DOWN: 9222 tpacpi_brightness_notify_change(); 9223 } 9224 } 9225 if (alsa_card) { 9226 switch (hkey_event) { 9227 case TP_HKEY_EV_VOL_UP: 9228 case TP_HKEY_EV_VOL_DOWN: 9229 case TP_HKEY_EV_VOL_MUTE: 9230 volume_alsa_notify_change(); 9231 } 9232 } 9233 if (tp_features.kbdlight && hkey_event == TP_HKEY_EV_KBD_LIGHT) { 9234 enum led_brightness brightness; 9235 9236 mutex_lock(&kbdlight_mutex); 9237 9238 /* 9239 * Check the brightness actually changed, setting the brightness 9240 * through kbdlight_set_level() also triggers this event. 9241 */ 9242 brightness = kbdlight_sysfs_get(NULL); 9243 if (kbdlight_brightness != brightness) { 9244 kbdlight_brightness = brightness; 9245 led_classdev_notify_brightness_hw_changed( 9246 &tpacpi_led_kbdlight.led_classdev, brightness); 9247 } 9248 9249 mutex_unlock(&kbdlight_mutex); 9250 } 9251 } 9252 9253 static void hotkey_driver_event(const unsigned int scancode) 9254 { 9255 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 9256 } 9257 9258 /* --------------------------------------------------------------------- */ 9259 9260 /* /proc support */ 9261 static struct proc_dir_entry *proc_dir; 9262 9263 /* 9264 * Module and infrastructure proble, init and exit handling 9265 */ 9266 9267 static bool force_load; 9268 9269 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 9270 static const char * __init str_supported(int is_supported) 9271 { 9272 static char text_unsupported[] __initdata = "not supported"; 9273 9274 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 9275 } 9276 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 9277 9278 static void ibm_exit(struct ibm_struct *ibm) 9279 { 9280 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 9281 9282 list_del_init(&ibm->all_drivers); 9283 9284 if (ibm->flags.acpi_notify_installed) { 9285 dbg_printk(TPACPI_DBG_EXIT, 9286 "%s: acpi_remove_notify_handler\n", ibm->name); 9287 BUG_ON(!ibm->acpi); 9288 acpi_remove_notify_handler(*ibm->acpi->handle, 9289 ibm->acpi->type, 9290 dispatch_acpi_notify); 9291 ibm->flags.acpi_notify_installed = 0; 9292 } 9293 9294 if (ibm->flags.proc_created) { 9295 dbg_printk(TPACPI_DBG_EXIT, 9296 "%s: remove_proc_entry\n", ibm->name); 9297 remove_proc_entry(ibm->name, proc_dir); 9298 ibm->flags.proc_created = 0; 9299 } 9300 9301 if (ibm->flags.acpi_driver_registered) { 9302 dbg_printk(TPACPI_DBG_EXIT, 9303 "%s: acpi_bus_unregister_driver\n", ibm->name); 9304 BUG_ON(!ibm->acpi); 9305 acpi_bus_unregister_driver(ibm->acpi->driver); 9306 kfree(ibm->acpi->driver); 9307 ibm->acpi->driver = NULL; 9308 ibm->flags.acpi_driver_registered = 0; 9309 } 9310 9311 if (ibm->flags.init_called && ibm->exit) { 9312 ibm->exit(); 9313 ibm->flags.init_called = 0; 9314 } 9315 9316 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 9317 } 9318 9319 static int __init ibm_init(struct ibm_init_struct *iibm) 9320 { 9321 int ret; 9322 struct ibm_struct *ibm = iibm->data; 9323 struct proc_dir_entry *entry; 9324 9325 BUG_ON(ibm == NULL); 9326 9327 INIT_LIST_HEAD(&ibm->all_drivers); 9328 9329 if (ibm->flags.experimental && !experimental) 9330 return 0; 9331 9332 dbg_printk(TPACPI_DBG_INIT, 9333 "probing for %s\n", ibm->name); 9334 9335 if (iibm->init) { 9336 ret = iibm->init(iibm); 9337 if (ret > 0) 9338 return 0; /* probe failed */ 9339 if (ret) 9340 return ret; 9341 9342 ibm->flags.init_called = 1; 9343 } 9344 9345 if (ibm->acpi) { 9346 if (ibm->acpi->hid) { 9347 ret = register_tpacpi_subdriver(ibm); 9348 if (ret) 9349 goto err_out; 9350 } 9351 9352 if (ibm->acpi->notify) { 9353 ret = setup_acpi_notify(ibm); 9354 if (ret == -ENODEV) { 9355 pr_notice("disabling subdriver %s\n", 9356 ibm->name); 9357 ret = 0; 9358 goto err_out; 9359 } 9360 if (ret < 0) 9361 goto err_out; 9362 } 9363 } 9364 9365 dbg_printk(TPACPI_DBG_INIT, 9366 "%s installed\n", ibm->name); 9367 9368 if (ibm->read) { 9369 umode_t mode = iibm->base_procfs_mode; 9370 9371 if (!mode) 9372 mode = S_IRUGO; 9373 if (ibm->write) 9374 mode |= S_IWUSR; 9375 entry = proc_create_data(ibm->name, mode, proc_dir, 9376 &dispatch_proc_fops, ibm); 9377 if (!entry) { 9378 pr_err("unable to create proc entry %s\n", ibm->name); 9379 ret = -ENODEV; 9380 goto err_out; 9381 } 9382 ibm->flags.proc_created = 1; 9383 } 9384 9385 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 9386 9387 return 0; 9388 9389 err_out: 9390 dbg_printk(TPACPI_DBG_INIT, 9391 "%s: at error exit path with result %d\n", 9392 ibm->name, ret); 9393 9394 ibm_exit(ibm); 9395 return (ret < 0) ? ret : 0; 9396 } 9397 9398 /* Probing */ 9399 9400 static bool __pure __init tpacpi_is_fw_digit(const char c) 9401 { 9402 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z'); 9403 } 9404 9405 static bool __pure __init tpacpi_is_valid_fw_id(const char * const s, 9406 const char t) 9407 { 9408 /* 9409 * Most models: xxyTkkWW (#.##c) 9410 * Ancient 570/600 and -SL lacks (#.##c) 9411 */ 9412 if (s && strlen(s) >= 8 && 9413 tpacpi_is_fw_digit(s[0]) && 9414 tpacpi_is_fw_digit(s[1]) && 9415 s[2] == t && 9416 (s[3] == 'T' || s[3] == 'N') && 9417 tpacpi_is_fw_digit(s[4]) && 9418 tpacpi_is_fw_digit(s[5])) 9419 return true; 9420 9421 /* New models: xxxyTkkW (#.##c); T550 and some others */ 9422 return s && strlen(s) >= 8 && 9423 tpacpi_is_fw_digit(s[0]) && 9424 tpacpi_is_fw_digit(s[1]) && 9425 tpacpi_is_fw_digit(s[2]) && 9426 s[3] == t && 9427 (s[4] == 'T' || s[4] == 'N') && 9428 tpacpi_is_fw_digit(s[5]) && 9429 tpacpi_is_fw_digit(s[6]); 9430 } 9431 9432 /* returns 0 - probe ok, or < 0 - probe error. 9433 * Probe ok doesn't mean thinkpad found. 9434 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 9435 static int __must_check __init get_thinkpad_model_data( 9436 struct thinkpad_id_data *tp) 9437 { 9438 const struct dmi_device *dev = NULL; 9439 char ec_fw_string[18]; 9440 char const *s; 9441 9442 if (!tp) 9443 return -EINVAL; 9444 9445 memset(tp, 0, sizeof(*tp)); 9446 9447 if (dmi_name_in_vendors("IBM")) 9448 tp->vendor = PCI_VENDOR_ID_IBM; 9449 else if (dmi_name_in_vendors("LENOVO")) 9450 tp->vendor = PCI_VENDOR_ID_LENOVO; 9451 else 9452 return 0; 9453 9454 s = dmi_get_system_info(DMI_BIOS_VERSION); 9455 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 9456 if (s && !tp->bios_version_str) 9457 return -ENOMEM; 9458 9459 /* Really ancient ThinkPad 240X will fail this, which is fine */ 9460 if (!(tpacpi_is_valid_fw_id(tp->bios_version_str, 'E') || 9461 tpacpi_is_valid_fw_id(tp->bios_version_str, 'C'))) 9462 return 0; 9463 9464 tp->bios_model = tp->bios_version_str[0] 9465 | (tp->bios_version_str[1] << 8); 9466 tp->bios_release = (tp->bios_version_str[4] << 8) 9467 | tp->bios_version_str[5]; 9468 9469 /* 9470 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 9471 * X32 or newer, all Z series; Some models must have an 9472 * up-to-date BIOS or they will not be detected. 9473 * 9474 * See http://thinkwiki.org/wiki/List_of_DMI_IDs 9475 */ 9476 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 9477 if (sscanf(dev->name, 9478 "IBM ThinkPad Embedded Controller -[%17c", 9479 ec_fw_string) == 1) { 9480 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 9481 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 9482 9483 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 9484 if (!tp->ec_version_str) 9485 return -ENOMEM; 9486 9487 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) { 9488 tp->ec_model = ec_fw_string[0] 9489 | (ec_fw_string[1] << 8); 9490 tp->ec_release = (ec_fw_string[4] << 8) 9491 | ec_fw_string[5]; 9492 } else { 9493 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 9494 ec_fw_string); 9495 pr_notice("please report this to %s\n", 9496 TPACPI_MAIL); 9497 } 9498 break; 9499 } 9500 } 9501 9502 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 9503 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 9504 tp->model_str = kstrdup(s, GFP_KERNEL); 9505 if (!tp->model_str) 9506 return -ENOMEM; 9507 } else { 9508 s = dmi_get_system_info(DMI_BIOS_VENDOR); 9509 if (s && !(strncasecmp(s, "Lenovo", 6))) { 9510 tp->model_str = kstrdup(s, GFP_KERNEL); 9511 if (!tp->model_str) 9512 return -ENOMEM; 9513 } 9514 } 9515 9516 s = dmi_get_system_info(DMI_PRODUCT_NAME); 9517 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 9518 if (s && !tp->nummodel_str) 9519 return -ENOMEM; 9520 9521 return 0; 9522 } 9523 9524 static int __init probe_for_thinkpad(void) 9525 { 9526 int is_thinkpad; 9527 9528 if (acpi_disabled) 9529 return -ENODEV; 9530 9531 /* It would be dangerous to run the driver in this case */ 9532 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 9533 return -ENODEV; 9534 9535 /* 9536 * Non-ancient models have better DMI tagging, but very old models 9537 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 9538 */ 9539 is_thinkpad = (thinkpad_id.model_str != NULL) || 9540 (thinkpad_id.ec_model != 0) || 9541 tpacpi_is_fw_known(); 9542 9543 /* The EC handler is required */ 9544 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 9545 if (!ec_handle) { 9546 if (is_thinkpad) 9547 pr_err("Not yet supported ThinkPad detected!\n"); 9548 return -ENODEV; 9549 } 9550 9551 if (!is_thinkpad && !force_load) 9552 return -ENODEV; 9553 9554 return 0; 9555 } 9556 9557 static void __init thinkpad_acpi_init_banner(void) 9558 { 9559 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 9560 pr_info("%s\n", TPACPI_URL); 9561 9562 pr_info("ThinkPad BIOS %s, EC %s\n", 9563 (thinkpad_id.bios_version_str) ? 9564 thinkpad_id.bios_version_str : "unknown", 9565 (thinkpad_id.ec_version_str) ? 9566 thinkpad_id.ec_version_str : "unknown"); 9567 9568 BUG_ON(!thinkpad_id.vendor); 9569 9570 if (thinkpad_id.model_str) 9571 pr_info("%s %s, model %s\n", 9572 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 9573 "IBM" : ((thinkpad_id.vendor == 9574 PCI_VENDOR_ID_LENOVO) ? 9575 "Lenovo" : "Unknown vendor"), 9576 thinkpad_id.model_str, 9577 (thinkpad_id.nummodel_str) ? 9578 thinkpad_id.nummodel_str : "unknown"); 9579 } 9580 9581 /* Module init, exit, parameters */ 9582 9583 static struct ibm_init_struct ibms_init[] __initdata = { 9584 { 9585 .data = &thinkpad_acpi_driver_data, 9586 }, 9587 { 9588 .init = hotkey_init, 9589 .data = &hotkey_driver_data, 9590 }, 9591 { 9592 .init = bluetooth_init, 9593 .data = &bluetooth_driver_data, 9594 }, 9595 { 9596 .init = wan_init, 9597 .data = &wan_driver_data, 9598 }, 9599 { 9600 .init = uwb_init, 9601 .data = &uwb_driver_data, 9602 }, 9603 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 9604 { 9605 .init = video_init, 9606 .base_procfs_mode = S_IRUSR, 9607 .data = &video_driver_data, 9608 }, 9609 #endif 9610 { 9611 .init = kbdlight_init, 9612 .data = &kbdlight_driver_data, 9613 }, 9614 { 9615 .init = light_init, 9616 .data = &light_driver_data, 9617 }, 9618 { 9619 .init = cmos_init, 9620 .data = &cmos_driver_data, 9621 }, 9622 { 9623 .init = led_init, 9624 .data = &led_driver_data, 9625 }, 9626 { 9627 .init = beep_init, 9628 .data = &beep_driver_data, 9629 }, 9630 { 9631 .init = thermal_init, 9632 .data = &thermal_driver_data, 9633 }, 9634 { 9635 .init = brightness_init, 9636 .data = &brightness_driver_data, 9637 }, 9638 { 9639 .init = volume_init, 9640 .data = &volume_driver_data, 9641 }, 9642 { 9643 .init = fan_init, 9644 .data = &fan_driver_data, 9645 }, 9646 { 9647 .init = mute_led_init, 9648 .data = &mute_led_driver_data, 9649 }, 9650 }; 9651 9652 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 9653 { 9654 unsigned int i; 9655 struct ibm_struct *ibm; 9656 9657 if (!kp || !kp->name || !val) 9658 return -EINVAL; 9659 9660 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 9661 ibm = ibms_init[i].data; 9662 WARN_ON(ibm == NULL); 9663 9664 if (!ibm || !ibm->name) 9665 continue; 9666 9667 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 9668 if (strlen(val) > sizeof(ibms_init[i].param) - 2) 9669 return -ENOSPC; 9670 strcpy(ibms_init[i].param, val); 9671 strcat(ibms_init[i].param, ","); 9672 return 0; 9673 } 9674 } 9675 9676 return -EINVAL; 9677 } 9678 9679 module_param(experimental, int, 0444); 9680 MODULE_PARM_DESC(experimental, 9681 "Enables experimental features when non-zero"); 9682 9683 module_param_named(debug, dbg_level, uint, 0); 9684 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 9685 9686 module_param(force_load, bool, 0444); 9687 MODULE_PARM_DESC(force_load, 9688 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 9689 9690 module_param_named(fan_control, fan_control_allowed, bool, 0444); 9691 MODULE_PARM_DESC(fan_control, 9692 "Enables setting fan parameters features when true"); 9693 9694 module_param_named(brightness_mode, brightness_mode, uint, 0444); 9695 MODULE_PARM_DESC(brightness_mode, 9696 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 9697 9698 module_param(brightness_enable, uint, 0444); 9699 MODULE_PARM_DESC(brightness_enable, 9700 "Enables backlight control when 1, disables when 0"); 9701 9702 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 9703 module_param_named(volume_mode, volume_mode, uint, 0444); 9704 MODULE_PARM_DESC(volume_mode, 9705 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 9706 9707 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 9708 MODULE_PARM_DESC(volume_capabilities, 9709 "Selects the mixer capabilites: 0=auto, 1=volume and mute, 2=mute only"); 9710 9711 module_param_named(volume_control, volume_control_allowed, bool, 0444); 9712 MODULE_PARM_DESC(volume_control, 9713 "Enables software override for the console audio control when true"); 9714 9715 module_param_named(software_mute, software_mute_requested, bool, 0444); 9716 MODULE_PARM_DESC(software_mute, 9717 "Request full software mute control"); 9718 9719 /* ALSA module API parameters */ 9720 module_param_named(index, alsa_index, int, 0444); 9721 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 9722 module_param_named(id, alsa_id, charp, 0444); 9723 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 9724 module_param_named(enable, alsa_enable, bool, 0444); 9725 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 9726 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 9727 9728 /* The module parameter can't be read back, that's why 0 is used here */ 9729 #define TPACPI_PARAM(feature) \ 9730 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 9731 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 9732 9733 TPACPI_PARAM(hotkey); 9734 TPACPI_PARAM(bluetooth); 9735 TPACPI_PARAM(video); 9736 TPACPI_PARAM(light); 9737 TPACPI_PARAM(cmos); 9738 TPACPI_PARAM(led); 9739 TPACPI_PARAM(beep); 9740 TPACPI_PARAM(brightness); 9741 TPACPI_PARAM(volume); 9742 TPACPI_PARAM(fan); 9743 9744 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 9745 module_param(dbg_wlswemul, uint, 0444); 9746 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 9747 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 9748 MODULE_PARM_DESC(wlsw_state, 9749 "Initial state of the emulated WLSW switch"); 9750 9751 module_param(dbg_bluetoothemul, uint, 0444); 9752 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 9753 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 9754 MODULE_PARM_DESC(bluetooth_state, 9755 "Initial state of the emulated bluetooth switch"); 9756 9757 module_param(dbg_wwanemul, uint, 0444); 9758 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 9759 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 9760 MODULE_PARM_DESC(wwan_state, 9761 "Initial state of the emulated WWAN switch"); 9762 9763 module_param(dbg_uwbemul, uint, 0444); 9764 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 9765 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 9766 MODULE_PARM_DESC(uwb_state, 9767 "Initial state of the emulated UWB switch"); 9768 #endif 9769 9770 static void thinkpad_acpi_module_exit(void) 9771 { 9772 struct ibm_struct *ibm, *itmp; 9773 9774 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 9775 9776 list_for_each_entry_safe_reverse(ibm, itmp, 9777 &tpacpi_all_drivers, 9778 all_drivers) { 9779 ibm_exit(ibm); 9780 } 9781 9782 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 9783 9784 if (tpacpi_inputdev) { 9785 if (tp_features.input_device_registered) 9786 input_unregister_device(tpacpi_inputdev); 9787 else 9788 input_free_device(tpacpi_inputdev); 9789 kfree(hotkey_keycode_map); 9790 } 9791 9792 if (tpacpi_hwmon) 9793 hwmon_device_unregister(tpacpi_hwmon); 9794 9795 if (tpacpi_sensors_pdev) 9796 platform_device_unregister(tpacpi_sensors_pdev); 9797 if (tpacpi_pdev) 9798 platform_device_unregister(tpacpi_pdev); 9799 9800 if (tp_features.sensors_pdrv_attrs_registered) 9801 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); 9802 if (tp_features.platform_drv_attrs_registered) 9803 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); 9804 9805 if (tp_features.sensors_pdrv_registered) 9806 platform_driver_unregister(&tpacpi_hwmon_pdriver); 9807 9808 if (tp_features.platform_drv_registered) 9809 platform_driver_unregister(&tpacpi_pdriver); 9810 9811 if (proc_dir) 9812 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 9813 9814 if (tpacpi_wq) 9815 destroy_workqueue(tpacpi_wq); 9816 9817 kfree(thinkpad_id.bios_version_str); 9818 kfree(thinkpad_id.ec_version_str); 9819 kfree(thinkpad_id.model_str); 9820 kfree(thinkpad_id.nummodel_str); 9821 } 9822 9823 9824 static int __init thinkpad_acpi_module_init(void) 9825 { 9826 int ret, i; 9827 9828 tpacpi_lifecycle = TPACPI_LIFE_INIT; 9829 9830 /* Driver-level probe */ 9831 9832 ret = get_thinkpad_model_data(&thinkpad_id); 9833 if (ret) { 9834 pr_err("unable to get DMI data: %d\n", ret); 9835 thinkpad_acpi_module_exit(); 9836 return ret; 9837 } 9838 ret = probe_for_thinkpad(); 9839 if (ret) { 9840 thinkpad_acpi_module_exit(); 9841 return ret; 9842 } 9843 9844 /* Driver initialization */ 9845 9846 thinkpad_acpi_init_banner(); 9847 tpacpi_check_outdated_fw(); 9848 9849 TPACPI_ACPIHANDLE_INIT(ecrd); 9850 TPACPI_ACPIHANDLE_INIT(ecwr); 9851 9852 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 9853 if (!tpacpi_wq) { 9854 thinkpad_acpi_module_exit(); 9855 return -ENOMEM; 9856 } 9857 9858 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 9859 if (!proc_dir) { 9860 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 9861 thinkpad_acpi_module_exit(); 9862 return -ENODEV; 9863 } 9864 9865 ret = platform_driver_register(&tpacpi_pdriver); 9866 if (ret) { 9867 pr_err("unable to register main platform driver\n"); 9868 thinkpad_acpi_module_exit(); 9869 return ret; 9870 } 9871 tp_features.platform_drv_registered = 1; 9872 9873 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 9874 if (ret) { 9875 pr_err("unable to register hwmon platform driver\n"); 9876 thinkpad_acpi_module_exit(); 9877 return ret; 9878 } 9879 tp_features.sensors_pdrv_registered = 1; 9880 9881 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); 9882 if (!ret) { 9883 tp_features.platform_drv_attrs_registered = 1; 9884 ret = tpacpi_create_driver_attributes( 9885 &tpacpi_hwmon_pdriver.driver); 9886 } 9887 if (ret) { 9888 pr_err("unable to create sysfs driver attributes\n"); 9889 thinkpad_acpi_module_exit(); 9890 return ret; 9891 } 9892 tp_features.sensors_pdrv_attrs_registered = 1; 9893 9894 9895 /* Device initialization */ 9896 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 9897 NULL, 0); 9898 if (IS_ERR(tpacpi_pdev)) { 9899 ret = PTR_ERR(tpacpi_pdev); 9900 tpacpi_pdev = NULL; 9901 pr_err("unable to register platform device\n"); 9902 thinkpad_acpi_module_exit(); 9903 return ret; 9904 } 9905 tpacpi_sensors_pdev = platform_device_register_simple( 9906 TPACPI_HWMON_DRVR_NAME, 9907 -1, NULL, 0); 9908 if (IS_ERR(tpacpi_sensors_pdev)) { 9909 ret = PTR_ERR(tpacpi_sensors_pdev); 9910 tpacpi_sensors_pdev = NULL; 9911 pr_err("unable to register hwmon platform device\n"); 9912 thinkpad_acpi_module_exit(); 9913 return ret; 9914 } 9915 tp_features.sensors_pdev_attrs_registered = 1; 9916 tpacpi_hwmon = hwmon_device_register_with_groups( 9917 &tpacpi_sensors_pdev->dev, TPACPI_NAME, NULL, NULL); 9918 9919 if (IS_ERR(tpacpi_hwmon)) { 9920 ret = PTR_ERR(tpacpi_hwmon); 9921 tpacpi_hwmon = NULL; 9922 pr_err("unable to register hwmon device\n"); 9923 thinkpad_acpi_module_exit(); 9924 return ret; 9925 } 9926 mutex_init(&tpacpi_inputdev_send_mutex); 9927 tpacpi_inputdev = input_allocate_device(); 9928 if (!tpacpi_inputdev) { 9929 thinkpad_acpi_module_exit(); 9930 return -ENOMEM; 9931 } else { 9932 /* Prepare input device, but don't register */ 9933 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 9934 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 9935 tpacpi_inputdev->id.bustype = BUS_HOST; 9936 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 9937 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 9938 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 9939 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 9940 } 9941 9942 /* Init subdriver dependencies */ 9943 tpacpi_detect_brightness_capabilities(); 9944 9945 /* Init subdrivers */ 9946 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 9947 ret = ibm_init(&ibms_init[i]); 9948 if (ret >= 0 && *ibms_init[i].param) 9949 ret = ibms_init[i].data->write(ibms_init[i].param); 9950 if (ret < 0) { 9951 thinkpad_acpi_module_exit(); 9952 return ret; 9953 } 9954 } 9955 9956 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 9957 9958 ret = input_register_device(tpacpi_inputdev); 9959 if (ret < 0) { 9960 pr_err("unable to register input device\n"); 9961 thinkpad_acpi_module_exit(); 9962 return ret; 9963 } else { 9964 tp_features.input_device_registered = 1; 9965 } 9966 9967 return 0; 9968 } 9969 9970 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 9971 9972 /* 9973 * This will autoload the driver in almost every ThinkPad 9974 * in widespread use. 9975 * 9976 * Only _VERY_ old models, like the 240, 240x and 570 lack 9977 * the HKEY event interface. 9978 */ 9979 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 9980 9981 /* 9982 * DMI matching for module autoloading 9983 * 9984 * See http://thinkwiki.org/wiki/List_of_DMI_IDs 9985 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 9986 * 9987 * Only models listed in thinkwiki will be supported, so add yours 9988 * if it is not there yet. 9989 */ 9990 #define IBM_BIOS_MODULE_ALIAS(__type) \ 9991 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 9992 9993 /* Ancient thinkpad BIOSes have to be identified by 9994 * BIOS type or model number, and there are far less 9995 * BIOS types than model numbers... */ 9996 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 9997 9998 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 9999 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 10000 MODULE_DESCRIPTION(TPACPI_DESC); 10001 MODULE_VERSION(TPACPI_VERSION); 10002 MODULE_LICENSE("GPL"); 10003 10004 module_init(thinkpad_acpi_module_init); 10005 module_exit(thinkpad_acpi_module_exit); 10006