thinkpad_acpi.c revision 9ebd9e833648745fa5ac6998b9e0153ccd3ba839
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 TPACPI_VERSION "0.23" 25#define TPACPI_SYSFS_VERSION 0x020600 26 27/* 28 * Changelog: 29 * 2007-10-20 changelog trimmed down 30 * 31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to 32 * drivers/misc. 33 * 34 * 2006-11-22 0.13 new maintainer 35 * changelog now lives in git commit history, and will 36 * not be updated further in-file. 37 * 38 * 2005-03-17 0.11 support for 600e, 770x 39 * thanks to Jamie Lentin <lentinj@dial.pipex.com> 40 * 41 * 2005-01-16 0.9 use MODULE_VERSION 42 * thanks to Henrik Brix Andersen <brix@gentoo.org> 43 * fix parameter passing on module loading 44 * thanks to Rusty Russell <rusty@rustcorp.com.au> 45 * thanks to Jim Radford <radford@blackbean.org> 46 * 2004-11-08 0.8 fix init error case, don't return from a macro 47 * thanks to Chris Wright <chrisw@osdl.org> 48 */ 49 50#include <linux/kernel.h> 51#include <linux/module.h> 52#include <linux/init.h> 53#include <linux/types.h> 54#include <linux/string.h> 55#include <linux/list.h> 56#include <linux/mutex.h> 57#include <linux/sched.h> 58#include <linux/kthread.h> 59#include <linux/freezer.h> 60#include <linux/delay.h> 61 62#include <linux/nvram.h> 63#include <linux/proc_fs.h> 64#include <linux/sysfs.h> 65#include <linux/backlight.h> 66#include <linux/fb.h> 67#include <linux/platform_device.h> 68#include <linux/hwmon.h> 69#include <linux/hwmon-sysfs.h> 70#include <linux/input.h> 71#include <linux/leds.h> 72#include <linux/rfkill.h> 73#include <asm/uaccess.h> 74 75#include <linux/dmi.h> 76#include <linux/jiffies.h> 77#include <linux/workqueue.h> 78 79#include <acpi/acpi_drivers.h> 80 81#include <linux/pci_ids.h> 82 83 84/* ThinkPad CMOS commands */ 85#define TP_CMOS_VOLUME_DOWN 0 86#define TP_CMOS_VOLUME_UP 1 87#define TP_CMOS_VOLUME_MUTE 2 88#define TP_CMOS_BRIGHTNESS_UP 4 89#define TP_CMOS_BRIGHTNESS_DOWN 5 90#define TP_CMOS_THINKLIGHT_ON 12 91#define TP_CMOS_THINKLIGHT_OFF 13 92 93/* NVRAM Addresses */ 94enum tp_nvram_addr { 95 TP_NVRAM_ADDR_HK2 = 0x57, 96 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 97 TP_NVRAM_ADDR_VIDEO = 0x59, 98 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 99 TP_NVRAM_ADDR_MIXER = 0x60, 100}; 101 102/* NVRAM bit masks */ 103enum { 104 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 105 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 106 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 107 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 108 TP_NVRAM_MASK_THINKLIGHT = 0x10, 109 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 110 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 111 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 112 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 113 TP_NVRAM_MASK_MUTE = 0x40, 114 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 115 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 116 TP_NVRAM_POS_LEVEL_VOLUME = 0, 117}; 118 119/* ACPI HIDs */ 120#define TPACPI_ACPI_HKEY_HID "IBM0068" 121 122/* Input IDs */ 123#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 124#define TPACPI_HKEY_INPUT_VERSION 0x4101 125 126/* ACPI \WGSV commands */ 127enum { 128 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 129 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 130 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 131 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 132}; 133 134/* TP_ACPI_WGSV_GET_STATE bits */ 135enum { 136 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 137 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 138 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 139 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 140 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 141 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 142 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 143 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 144 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 145 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 146}; 147 148/* HKEY events */ 149enum tpacpi_hkey_event_t { 150 /* Hotkey-related */ 151 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */ 152 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 153 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 154 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 155 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 156 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 157 158 /* Reasons for waking up from S3/S4 */ 159 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 160 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 161 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 162 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 163 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 164 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 165 166 /* Auto-sleep after eject request */ 167 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 168 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 169 170 /* Misc bay events */ 171 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 172 173 /* User-interface events */ 174 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 175 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 176 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 177 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 178 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 179 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 180 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 181 182 /* Thermal events */ 183 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 184 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 185 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 186 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 187 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */ 188 189 /* Misc */ 190 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 191}; 192 193/**************************************************************************** 194 * Main driver 195 */ 196 197#define TPACPI_NAME "thinkpad" 198#define TPACPI_DESC "ThinkPad ACPI Extras" 199#define TPACPI_FILE TPACPI_NAME "_acpi" 200#define TPACPI_URL "http://ibm-acpi.sf.net/" 201#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 202 203#define TPACPI_PROC_DIR "ibm" 204#define TPACPI_ACPI_EVENT_PREFIX "ibm" 205#define TPACPI_DRVR_NAME TPACPI_FILE 206#define TPACPI_DRVR_SHORTNAME "tpacpi" 207#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 208 209#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 210#define TPACPI_WORKQUEUE_NAME "ktpacpid" 211 212#define TPACPI_MAX_ACPI_ARGS 3 213 214/* printk headers */ 215#define TPACPI_LOG TPACPI_FILE ": " 216#define TPACPI_EMERG KERN_EMERG TPACPI_LOG 217#define TPACPI_ALERT KERN_ALERT TPACPI_LOG 218#define TPACPI_CRIT KERN_CRIT TPACPI_LOG 219#define TPACPI_ERR KERN_ERR TPACPI_LOG 220#define TPACPI_WARN KERN_WARNING TPACPI_LOG 221#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG 222#define TPACPI_INFO KERN_INFO TPACPI_LOG 223#define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG 224 225/* Debugging printk groups */ 226#define TPACPI_DBG_ALL 0xffff 227#define TPACPI_DBG_DISCLOSETASK 0x8000 228#define TPACPI_DBG_INIT 0x0001 229#define TPACPI_DBG_EXIT 0x0002 230#define TPACPI_DBG_RFKILL 0x0004 231#define TPACPI_DBG_HKEY 0x0008 232#define TPACPI_DBG_FAN 0x0010 233#define TPACPI_DBG_BRGHT 0x0020 234 235#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") 236#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") 237#define strlencmp(a, b) (strncmp((a), (b), strlen(b))) 238 239 240/**************************************************************************** 241 * Driver-wide structs and misc. variables 242 */ 243 244struct ibm_struct; 245 246struct tp_acpi_drv_struct { 247 const struct acpi_device_id *hid; 248 struct acpi_driver *driver; 249 250 void (*notify) (struct ibm_struct *, u32); 251 acpi_handle *handle; 252 u32 type; 253 struct acpi_device *device; 254}; 255 256struct ibm_struct { 257 char *name; 258 259 int (*read) (char *); 260 int (*write) (char *); 261 void (*exit) (void); 262 void (*resume) (void); 263 void (*suspend) (pm_message_t state); 264 void (*shutdown) (void); 265 266 struct list_head all_drivers; 267 268 struct tp_acpi_drv_struct *acpi; 269 270 struct { 271 u8 acpi_driver_registered:1; 272 u8 acpi_notify_installed:1; 273 u8 proc_created:1; 274 u8 init_called:1; 275 u8 experimental:1; 276 } flags; 277}; 278 279struct ibm_init_struct { 280 char param[32]; 281 282 int (*init) (struct ibm_init_struct *); 283 struct ibm_struct *data; 284}; 285 286static struct { 287 u32 bluetooth:1; 288 u32 hotkey:1; 289 u32 hotkey_mask:1; 290 u32 hotkey_wlsw:1; 291 u32 hotkey_tablet:1; 292 u32 light:1; 293 u32 light_status:1; 294 u32 bright_16levels:1; 295 u32 bright_acpimode:1; 296 u32 wan:1; 297 u32 uwb:1; 298 u32 fan_ctrl_status_undef:1; 299 u32 second_fan:1; 300 u32 beep_needs_two_args:1; 301 u32 input_device_registered:1; 302 u32 platform_drv_registered:1; 303 u32 platform_drv_attrs_registered:1; 304 u32 sensors_pdrv_registered:1; 305 u32 sensors_pdrv_attrs_registered:1; 306 u32 sensors_pdev_attrs_registered:1; 307 u32 hotkey_poll_active:1; 308} tp_features; 309 310static struct { 311 u16 hotkey_mask_ff:1; 312} tp_warned; 313 314struct thinkpad_id_data { 315 unsigned int vendor; /* ThinkPad vendor: 316 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 317 318 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 319 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 320 321 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */ 322 u16 ec_model; 323 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */ 324 u16 ec_release; 325 326 char *model_str; /* ThinkPad T43 */ 327 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 328}; 329static struct thinkpad_id_data thinkpad_id; 330 331static enum { 332 TPACPI_LIFE_INIT = 0, 333 TPACPI_LIFE_RUNNING, 334 TPACPI_LIFE_EXITING, 335} tpacpi_lifecycle; 336 337static int experimental; 338static u32 dbg_level; 339 340static struct workqueue_struct *tpacpi_wq; 341 342enum led_status_t { 343 TPACPI_LED_OFF = 0, 344 TPACPI_LED_ON, 345 TPACPI_LED_BLINK, 346}; 347 348/* Special LED class that can defer work */ 349struct tpacpi_led_classdev { 350 struct led_classdev led_classdev; 351 struct work_struct work; 352 enum led_status_t new_state; 353 unsigned int led; 354}; 355 356#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 357static int dbg_wlswemul; 358static int tpacpi_wlsw_emulstate; 359static int dbg_bluetoothemul; 360static int tpacpi_bluetooth_emulstate; 361static int dbg_wwanemul; 362static int tpacpi_wwan_emulstate; 363static int dbg_uwbemul; 364static int tpacpi_uwb_emulstate; 365#endif 366 367 368/************************************************************************* 369 * Debugging helpers 370 */ 371 372#define dbg_printk(a_dbg_level, format, arg...) \ 373 do { if (dbg_level & (a_dbg_level)) \ 374 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \ 375 } while (0) 376 377#ifdef CONFIG_THINKPAD_ACPI_DEBUG 378#define vdbg_printk dbg_printk 379static const char *str_supported(int is_supported); 380#else 381#define vdbg_printk(a_dbg_level, format, arg...) \ 382 do { } while (0) 383#endif 384 385static void tpacpi_log_usertask(const char * const what) 386{ 387 printk(TPACPI_DEBUG "%s: access by process with PID %d\n", 388 what, task_tgid_vnr(current)); 389} 390 391#define tpacpi_disclose_usertask(what, format, arg...) \ 392 do { \ 393 if (unlikely( \ 394 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 395 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 396 printk(TPACPI_DEBUG "%s: PID %d: " format, \ 397 what, task_tgid_vnr(current), ## arg); \ 398 } \ 399 } while (0) 400 401/* 402 * Quirk handling helpers 403 * 404 * ThinkPad IDs and versions seen in the field so far 405 * are two-characters from the set [0-9A-Z], i.e. base 36. 406 * 407 * We use values well outside that range as specials. 408 */ 409 410#define TPACPI_MATCH_ANY 0xffffU 411#define TPACPI_MATCH_UNKNOWN 0U 412 413/* TPID('1', 'Y') == 0x5931 */ 414#define TPID(__c1, __c2) (((__c2) << 8) | (__c1)) 415 416#define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 417 { .vendor = PCI_VENDOR_ID_IBM, \ 418 .bios = TPID(__id1, __id2), \ 419 .ec = TPACPI_MATCH_ANY, \ 420 .quirks = (__quirk) } 421 422#define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 423 { .vendor = PCI_VENDOR_ID_LENOVO, \ 424 .bios = TPID(__id1, __id2), \ 425 .ec = TPACPI_MATCH_ANY, \ 426 .quirks = (__quirk) } 427 428struct tpacpi_quirk { 429 unsigned int vendor; 430 u16 bios; 431 u16 ec; 432 unsigned long quirks; 433}; 434 435/** 436 * tpacpi_check_quirks() - search BIOS/EC version on a list 437 * @qlist: array of &struct tpacpi_quirk 438 * @qlist_size: number of elements in @qlist 439 * 440 * Iterates over a quirks list until one is found that matches the 441 * ThinkPad's vendor, BIOS and EC model. 442 * 443 * Returns 0 if nothing matches, otherwise returns the quirks field of 444 * the matching &struct tpacpi_quirk entry. 445 * 446 * The match criteria is: vendor, ec and bios much match. 447 */ 448static unsigned long __init tpacpi_check_quirks( 449 const struct tpacpi_quirk *qlist, 450 unsigned int qlist_size) 451{ 452 while (qlist_size) { 453 if ((qlist->vendor == thinkpad_id.vendor || 454 qlist->vendor == TPACPI_MATCH_ANY) && 455 (qlist->bios == thinkpad_id.bios_model || 456 qlist->bios == TPACPI_MATCH_ANY) && 457 (qlist->ec == thinkpad_id.ec_model || 458 qlist->ec == TPACPI_MATCH_ANY)) 459 return qlist->quirks; 460 461 qlist_size--; 462 qlist++; 463 } 464 return 0; 465} 466 467 468/**************************************************************************** 469 **************************************************************************** 470 * 471 * ACPI Helpers and device model 472 * 473 **************************************************************************** 474 ****************************************************************************/ 475 476/************************************************************************* 477 * ACPI basic handles 478 */ 479 480static acpi_handle root_handle; 481 482#define TPACPI_HANDLE(object, parent, paths...) \ 483 static acpi_handle object##_handle; \ 484 static acpi_handle *object##_parent = &parent##_handle; \ 485 static char *object##_path; \ 486 static char *object##_paths[] = { paths } 487 488TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */ 489 "\\_SB.PCI.ISA.EC", /* 570 */ 490 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */ 491 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */ 492 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */ 493 "\\_SB.PCI0.ICH3.EC0", /* R31 */ 494 "\\_SB.PCI0.LPC.EC", /* all others */ 495 ); 496 497TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 498TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 499 500TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 501 /* T4x, X31, X40 */ 502 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 503 "\\CMS", /* R40, R40e */ 504 ); /* all others */ 505 506TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 507 "^HKEY", /* R30, R31 */ 508 "HKEY", /* all others */ 509 ); /* 570 */ 510 511TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ 512 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 513 "\\_SB.PCI0.VID0", /* 770e */ 514 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 515 "\\_SB.PCI0.AGP.VID", /* all others */ 516 ); /* R30, R31 */ 517 518 519/************************************************************************* 520 * ACPI helpers 521 */ 522 523static int acpi_evalf(acpi_handle handle, 524 void *res, char *method, char *fmt, ...) 525{ 526 char *fmt0 = fmt; 527 struct acpi_object_list params; 528 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 529 struct acpi_buffer result, *resultp; 530 union acpi_object out_obj; 531 acpi_status status; 532 va_list ap; 533 char res_type; 534 int success; 535 int quiet; 536 537 if (!*fmt) { 538 printk(TPACPI_ERR "acpi_evalf() called with empty format\n"); 539 return 0; 540 } 541 542 if (*fmt == 'q') { 543 quiet = 1; 544 fmt++; 545 } else 546 quiet = 0; 547 548 res_type = *(fmt++); 549 550 params.count = 0; 551 params.pointer = &in_objs[0]; 552 553 va_start(ap, fmt); 554 while (*fmt) { 555 char c = *(fmt++); 556 switch (c) { 557 case 'd': /* int */ 558 in_objs[params.count].integer.value = va_arg(ap, int); 559 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 560 break; 561 /* add more types as needed */ 562 default: 563 printk(TPACPI_ERR "acpi_evalf() called " 564 "with invalid format character '%c'\n", c); 565 return 0; 566 } 567 } 568 va_end(ap); 569 570 if (res_type != 'v') { 571 result.length = sizeof(out_obj); 572 result.pointer = &out_obj; 573 resultp = &result; 574 } else 575 resultp = NULL; 576 577 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 578 579 switch (res_type) { 580 case 'd': /* int */ 581 if (res) 582 *(int *)res = out_obj.integer.value; 583 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER; 584 break; 585 case 'v': /* void */ 586 success = status == AE_OK; 587 break; 588 /* add more types as needed */ 589 default: 590 printk(TPACPI_ERR "acpi_evalf() called " 591 "with invalid format character '%c'\n", res_type); 592 return 0; 593 } 594 595 if (!success && !quiet) 596 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n", 597 method, fmt0, status); 598 599 return success; 600} 601 602static int acpi_ec_read(int i, u8 *p) 603{ 604 int v; 605 606 if (ecrd_handle) { 607 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 608 return 0; 609 *p = v; 610 } else { 611 if (ec_read(i, p) < 0) 612 return 0; 613 } 614 615 return 1; 616} 617 618static int acpi_ec_write(int i, u8 v) 619{ 620 if (ecwr_handle) { 621 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 622 return 0; 623 } else { 624 if (ec_write(i, v) < 0) 625 return 0; 626 } 627 628 return 1; 629} 630 631static int issue_thinkpad_cmos_command(int cmos_cmd) 632{ 633 if (!cmos_handle) 634 return -ENXIO; 635 636 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 637 return -EIO; 638 639 return 0; 640} 641 642/************************************************************************* 643 * ACPI device model 644 */ 645 646#define TPACPI_ACPIHANDLE_INIT(object) \ 647 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 648 object##_paths, ARRAY_SIZE(object##_paths), &object##_path) 649 650static void drv_acpi_handle_init(char *name, 651 acpi_handle *handle, acpi_handle parent, 652 char **paths, int num_paths, char **path) 653{ 654 int i; 655 acpi_status status; 656 657 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 658 name); 659 660 for (i = 0; i < num_paths; i++) { 661 status = acpi_get_handle(parent, paths[i], handle); 662 if (ACPI_SUCCESS(status)) { 663 *path = paths[i]; 664 dbg_printk(TPACPI_DBG_INIT, 665 "Found ACPI handle %s for %s\n", 666 *path, name); 667 return; 668 } 669 } 670 671 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 672 name); 673 *handle = NULL; 674} 675 676static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 677{ 678 struct ibm_struct *ibm = data; 679 680 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 681 return; 682 683 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 684 return; 685 686 ibm->acpi->notify(ibm, event); 687} 688 689static int __init setup_acpi_notify(struct ibm_struct *ibm) 690{ 691 acpi_status status; 692 int rc; 693 694 BUG_ON(!ibm->acpi); 695 696 if (!*ibm->acpi->handle) 697 return 0; 698 699 vdbg_printk(TPACPI_DBG_INIT, 700 "setting up ACPI notify for %s\n", ibm->name); 701 702 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); 703 if (rc < 0) { 704 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n", 705 ibm->name, rc); 706 return -ENODEV; 707 } 708 709 ibm->acpi->device->driver_data = ibm; 710 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", 711 TPACPI_ACPI_EVENT_PREFIX, 712 ibm->name); 713 714 status = acpi_install_notify_handler(*ibm->acpi->handle, 715 ibm->acpi->type, dispatch_acpi_notify, ibm); 716 if (ACPI_FAILURE(status)) { 717 if (status == AE_ALREADY_EXISTS) { 718 printk(TPACPI_NOTICE 719 "another device driver is already " 720 "handling %s events\n", ibm->name); 721 } else { 722 printk(TPACPI_ERR 723 "acpi_install_notify_handler(%s) failed: %d\n", 724 ibm->name, status); 725 } 726 return -ENODEV; 727 } 728 ibm->flags.acpi_notify_installed = 1; 729 return 0; 730} 731 732static int __init tpacpi_device_add(struct acpi_device *device) 733{ 734 return 0; 735} 736 737static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 738{ 739 int rc; 740 741 dbg_printk(TPACPI_DBG_INIT, 742 "registering %s as an ACPI driver\n", ibm->name); 743 744 BUG_ON(!ibm->acpi); 745 746 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 747 if (!ibm->acpi->driver) { 748 printk(TPACPI_ERR 749 "failed to allocate memory for ibm->acpi->driver\n"); 750 return -ENOMEM; 751 } 752 753 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 754 ibm->acpi->driver->ids = ibm->acpi->hid; 755 756 ibm->acpi->driver->ops.add = &tpacpi_device_add; 757 758 rc = acpi_bus_register_driver(ibm->acpi->driver); 759 if (rc < 0) { 760 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n", 761 ibm->name, rc); 762 kfree(ibm->acpi->driver); 763 ibm->acpi->driver = NULL; 764 } else if (!rc) 765 ibm->flags.acpi_driver_registered = 1; 766 767 return rc; 768} 769 770 771/**************************************************************************** 772 **************************************************************************** 773 * 774 * Procfs Helpers 775 * 776 **************************************************************************** 777 ****************************************************************************/ 778 779static int dispatch_procfs_read(char *page, char **start, off_t off, 780 int count, int *eof, void *data) 781{ 782 struct ibm_struct *ibm = data; 783 int len; 784 785 if (!ibm || !ibm->read) 786 return -EINVAL; 787 788 len = ibm->read(page); 789 if (len < 0) 790 return len; 791 792 if (len <= off + count) 793 *eof = 1; 794 *start = page + off; 795 len -= off; 796 if (len > count) 797 len = count; 798 if (len < 0) 799 len = 0; 800 801 return len; 802} 803 804static int dispatch_procfs_write(struct file *file, 805 const char __user *userbuf, 806 unsigned long count, void *data) 807{ 808 struct ibm_struct *ibm = data; 809 char *kernbuf; 810 int ret; 811 812 if (!ibm || !ibm->write) 813 return -EINVAL; 814 if (count > PAGE_SIZE - 2) 815 return -EINVAL; 816 817 kernbuf = kmalloc(count + 2, GFP_KERNEL); 818 if (!kernbuf) 819 return -ENOMEM; 820 821 if (copy_from_user(kernbuf, userbuf, count)) { 822 kfree(kernbuf); 823 return -EFAULT; 824 } 825 826 kernbuf[count] = 0; 827 strcat(kernbuf, ","); 828 ret = ibm->write(kernbuf); 829 if (ret == 0) 830 ret = count; 831 832 kfree(kernbuf); 833 834 return ret; 835} 836 837static char *next_cmd(char **cmds) 838{ 839 char *start = *cmds; 840 char *end; 841 842 while ((end = strchr(start, ',')) && end == start) 843 start = end + 1; 844 845 if (!end) 846 return NULL; 847 848 *end = 0; 849 *cmds = end + 1; 850 return start; 851} 852 853 854/**************************************************************************** 855 **************************************************************************** 856 * 857 * Device model: input, hwmon and platform 858 * 859 **************************************************************************** 860 ****************************************************************************/ 861 862static struct platform_device *tpacpi_pdev; 863static struct platform_device *tpacpi_sensors_pdev; 864static struct device *tpacpi_hwmon; 865static struct input_dev *tpacpi_inputdev; 866static struct mutex tpacpi_inputdev_send_mutex; 867static LIST_HEAD(tpacpi_all_drivers); 868 869static int tpacpi_suspend_handler(struct platform_device *pdev, 870 pm_message_t state) 871{ 872 struct ibm_struct *ibm, *itmp; 873 874 list_for_each_entry_safe(ibm, itmp, 875 &tpacpi_all_drivers, 876 all_drivers) { 877 if (ibm->suspend) 878 (ibm->suspend)(state); 879 } 880 881 return 0; 882} 883 884static int tpacpi_resume_handler(struct platform_device *pdev) 885{ 886 struct ibm_struct *ibm, *itmp; 887 888 list_for_each_entry_safe(ibm, itmp, 889 &tpacpi_all_drivers, 890 all_drivers) { 891 if (ibm->resume) 892 (ibm->resume)(); 893 } 894 895 return 0; 896} 897 898static void tpacpi_shutdown_handler(struct platform_device *pdev) 899{ 900 struct ibm_struct *ibm, *itmp; 901 902 list_for_each_entry_safe(ibm, itmp, 903 &tpacpi_all_drivers, 904 all_drivers) { 905 if (ibm->shutdown) 906 (ibm->shutdown)(); 907 } 908} 909 910static struct platform_driver tpacpi_pdriver = { 911 .driver = { 912 .name = TPACPI_DRVR_NAME, 913 .owner = THIS_MODULE, 914 }, 915 .suspend = tpacpi_suspend_handler, 916 .resume = tpacpi_resume_handler, 917 .shutdown = tpacpi_shutdown_handler, 918}; 919 920static struct platform_driver tpacpi_hwmon_pdriver = { 921 .driver = { 922 .name = TPACPI_HWMON_DRVR_NAME, 923 .owner = THIS_MODULE, 924 }, 925}; 926 927/************************************************************************* 928 * sysfs support helpers 929 */ 930 931struct attribute_set { 932 unsigned int members, max_members; 933 struct attribute_group group; 934}; 935 936struct attribute_set_obj { 937 struct attribute_set s; 938 struct attribute *a; 939} __attribute__((packed)); 940 941static struct attribute_set *create_attr_set(unsigned int max_members, 942 const char *name) 943{ 944 struct attribute_set_obj *sobj; 945 946 if (max_members == 0) 947 return NULL; 948 949 /* Allocates space for implicit NULL at the end too */ 950 sobj = kzalloc(sizeof(struct attribute_set_obj) + 951 max_members * sizeof(struct attribute *), 952 GFP_KERNEL); 953 if (!sobj) 954 return NULL; 955 sobj->s.max_members = max_members; 956 sobj->s.group.attrs = &sobj->a; 957 sobj->s.group.name = name; 958 959 return &sobj->s; 960} 961 962#define destroy_attr_set(_set) \ 963 kfree(_set); 964 965/* not multi-threaded safe, use it in a single thread per set */ 966static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) 967{ 968 if (!s || !attr) 969 return -EINVAL; 970 971 if (s->members >= s->max_members) 972 return -ENOMEM; 973 974 s->group.attrs[s->members] = attr; 975 s->members++; 976 977 return 0; 978} 979 980static int add_many_to_attr_set(struct attribute_set *s, 981 struct attribute **attr, 982 unsigned int count) 983{ 984 int i, res; 985 986 for (i = 0; i < count; i++) { 987 res = add_to_attr_set(s, attr[i]); 988 if (res) 989 return res; 990 } 991 992 return 0; 993} 994 995static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) 996{ 997 sysfs_remove_group(kobj, &s->group); 998 destroy_attr_set(s); 999} 1000 1001#define register_attr_set_with_sysfs(_attr_set, _kobj) \ 1002 sysfs_create_group(_kobj, &_attr_set->group) 1003 1004static int parse_strtoul(const char *buf, 1005 unsigned long max, unsigned long *value) 1006{ 1007 char *endp; 1008 1009 while (*buf && isspace(*buf)) 1010 buf++; 1011 *value = simple_strtoul(buf, &endp, 0); 1012 while (*endp && isspace(*endp)) 1013 endp++; 1014 if (*endp || *value > max) 1015 return -EINVAL; 1016 1017 return 0; 1018} 1019 1020static void tpacpi_disable_brightness_delay(void) 1021{ 1022 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1023 printk(TPACPI_NOTICE 1024 "ACPI backlight control delay disabled\n"); 1025} 1026 1027static int __init tpacpi_query_bcl_levels(acpi_handle handle) 1028{ 1029 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 1030 union acpi_object *obj; 1031 int rc; 1032 1033 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) { 1034 obj = (union acpi_object *)buffer.pointer; 1035 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { 1036 printk(TPACPI_ERR "Unknown _BCL data, " 1037 "please report this to %s\n", TPACPI_MAIL); 1038 rc = 0; 1039 } else { 1040 rc = obj->package.count; 1041 } 1042 } else { 1043 return 0; 1044 } 1045 1046 kfree(buffer.pointer); 1047 return rc; 1048} 1049 1050static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle, 1051 u32 lvl, void *context, void **rv) 1052{ 1053 char name[ACPI_PATH_SEGMENT_LENGTH]; 1054 struct acpi_buffer buffer = { sizeof(name), &name }; 1055 1056 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) && 1057 !strncmp("_BCL", name, sizeof(name) - 1)) { 1058 BUG_ON(!rv || !*rv); 1059 **(int **)rv = tpacpi_query_bcl_levels(handle); 1060 return AE_CTRL_TERMINATE; 1061 } else { 1062 return AE_OK; 1063 } 1064} 1065 1066/* 1067 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 1068 */ 1069static int __init tpacpi_check_std_acpi_brightness_support(void) 1070{ 1071 int status; 1072 int bcl_levels = 0; 1073 void *bcl_ptr = &bcl_levels; 1074 1075 if (!vid_handle) { 1076 TPACPI_ACPIHANDLE_INIT(vid); 1077 } 1078 if (!vid_handle) 1079 return 0; 1080 1081 /* 1082 * Search for a _BCL method, and execute it. This is safe on all 1083 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista 1084 * BIOS in ACPI backlight control mode. We do NOT have to care 1085 * about calling the _BCL method in an enabled video device, any 1086 * will do for our purposes. 1087 */ 1088 1089 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3, 1090 tpacpi_acpi_walk_find_bcl, NULL, 1091 &bcl_ptr); 1092 1093 if (ACPI_SUCCESS(status) && bcl_levels > 2) { 1094 tp_features.bright_acpimode = 1; 1095 return (bcl_levels - 2); 1096 } 1097 1098 return 0; 1099} 1100 1101static void printk_deprecated_attribute(const char * const what, 1102 const char * const details) 1103{ 1104 tpacpi_log_usertask("deprecated sysfs attribute"); 1105 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and " 1106 "will be removed. %s\n", 1107 what, details); 1108} 1109 1110/************************************************************************* 1111 * rfkill and radio control support helpers 1112 */ 1113 1114/* 1115 * ThinkPad-ACPI firmware handling model: 1116 * 1117 * WLSW (master wireless switch) is event-driven, and is common to all 1118 * firmware-controlled radios. It cannot be controlled, just monitored, 1119 * as expected. It overrides all radio state in firmware 1120 * 1121 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1122 * (TODO: verify how WLSW interacts with the returned radio state). 1123 * 1124 * The only time there are shadow radio state changes, is when 1125 * masked-off hotkeys are used. 1126 */ 1127 1128/* 1129 * Internal driver API for radio state: 1130 * 1131 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1132 * bool: true means radio blocked (off) 1133 */ 1134enum tpacpi_rfkill_state { 1135 TPACPI_RFK_RADIO_OFF = 0, 1136 TPACPI_RFK_RADIO_ON 1137}; 1138 1139/* rfkill switches */ 1140enum tpacpi_rfk_id { 1141 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1142 TPACPI_RFK_WWAN_SW_ID, 1143 TPACPI_RFK_UWB_SW_ID, 1144 TPACPI_RFK_SW_MAX 1145}; 1146 1147static const char *tpacpi_rfkill_names[] = { 1148 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1149 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1150 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1151 [TPACPI_RFK_SW_MAX] = NULL 1152}; 1153 1154/* ThinkPad-ACPI rfkill subdriver */ 1155struct tpacpi_rfk { 1156 struct rfkill *rfkill; 1157 enum tpacpi_rfk_id id; 1158 const struct tpacpi_rfk_ops *ops; 1159}; 1160 1161struct tpacpi_rfk_ops { 1162 /* firmware interface */ 1163 int (*get_status)(void); 1164 int (*set_status)(const enum tpacpi_rfkill_state); 1165}; 1166 1167static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1168 1169/* Query FW and update rfkill sw state for a given rfkill switch */ 1170static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1171{ 1172 int status; 1173 1174 if (!tp_rfk) 1175 return -ENODEV; 1176 1177 status = (tp_rfk->ops->get_status)(); 1178 if (status < 0) 1179 return status; 1180 1181 rfkill_set_sw_state(tp_rfk->rfkill, 1182 (status == TPACPI_RFK_RADIO_OFF)); 1183 1184 return status; 1185} 1186 1187/* Query FW and update rfkill sw state for all rfkill switches */ 1188static void tpacpi_rfk_update_swstate_all(void) 1189{ 1190 unsigned int i; 1191 1192 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) 1193 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]); 1194} 1195 1196/* 1197 * Sync the HW-blocking state of all rfkill switches, 1198 * do notice it causes the rfkill core to schedule uevents 1199 */ 1200static void tpacpi_rfk_update_hwblock_state(bool blocked) 1201{ 1202 unsigned int i; 1203 struct tpacpi_rfk *tp_rfk; 1204 1205 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1206 tp_rfk = tpacpi_rfkill_switches[i]; 1207 if (tp_rfk) { 1208 if (rfkill_set_hw_state(tp_rfk->rfkill, 1209 blocked)) { 1210 /* ignore -- we track sw block */ 1211 } 1212 } 1213 } 1214} 1215 1216/* Call to get the WLSW state from the firmware */ 1217static int hotkey_get_wlsw(void); 1218 1219/* Call to query WLSW state and update all rfkill switches */ 1220static bool tpacpi_rfk_check_hwblock_state(void) 1221{ 1222 int res = hotkey_get_wlsw(); 1223 int hw_blocked; 1224 1225 /* When unknown or unsupported, we have to assume it is unblocked */ 1226 if (res < 0) 1227 return false; 1228 1229 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1230 tpacpi_rfk_update_hwblock_state(hw_blocked); 1231 1232 return hw_blocked; 1233} 1234 1235static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1236{ 1237 struct tpacpi_rfk *tp_rfk = data; 1238 int res; 1239 1240 dbg_printk(TPACPI_DBG_RFKILL, 1241 "request to change radio state to %s\n", 1242 blocked ? "blocked" : "unblocked"); 1243 1244 /* try to set radio state */ 1245 res = (tp_rfk->ops->set_status)(blocked ? 1246 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1247 1248 /* and update the rfkill core with whatever the FW really did */ 1249 tpacpi_rfk_update_swstate(tp_rfk); 1250 1251 return (res < 0) ? res : 0; 1252} 1253 1254static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1255 .set_block = tpacpi_rfk_hook_set_block, 1256}; 1257 1258static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1259 const struct tpacpi_rfk_ops *tp_rfkops, 1260 const enum rfkill_type rfktype, 1261 const char *name, 1262 const bool set_default) 1263{ 1264 struct tpacpi_rfk *atp_rfk; 1265 int res; 1266 bool sw_state = false; 1267 int sw_status; 1268 1269 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1270 1271 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1272 if (atp_rfk) 1273 atp_rfk->rfkill = rfkill_alloc(name, 1274 &tpacpi_pdev->dev, 1275 rfktype, 1276 &tpacpi_rfk_rfkill_ops, 1277 atp_rfk); 1278 if (!atp_rfk || !atp_rfk->rfkill) { 1279 printk(TPACPI_ERR 1280 "failed to allocate memory for rfkill class\n"); 1281 kfree(atp_rfk); 1282 return -ENOMEM; 1283 } 1284 1285 atp_rfk->id = id; 1286 atp_rfk->ops = tp_rfkops; 1287 1288 sw_status = (tp_rfkops->get_status)(); 1289 if (sw_status < 0) { 1290 printk(TPACPI_ERR 1291 "failed to read initial state for %s, error %d\n", 1292 name, sw_status); 1293 } else { 1294 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1295 if (set_default) { 1296 /* try to keep the initial state, since we ask the 1297 * firmware to preserve it across S5 in NVRAM */ 1298 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1299 } 1300 } 1301 rfkill_set_hw_state(atp_rfk->rfkill, tpacpi_rfk_check_hwblock_state()); 1302 1303 res = rfkill_register(atp_rfk->rfkill); 1304 if (res < 0) { 1305 printk(TPACPI_ERR 1306 "failed to register %s rfkill switch: %d\n", 1307 name, res); 1308 rfkill_destroy(atp_rfk->rfkill); 1309 kfree(atp_rfk); 1310 return res; 1311 } 1312 1313 tpacpi_rfkill_switches[id] = atp_rfk; 1314 return 0; 1315} 1316 1317static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1318{ 1319 struct tpacpi_rfk *tp_rfk; 1320 1321 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1322 1323 tp_rfk = tpacpi_rfkill_switches[id]; 1324 if (tp_rfk) { 1325 rfkill_unregister(tp_rfk->rfkill); 1326 rfkill_destroy(tp_rfk->rfkill); 1327 tpacpi_rfkill_switches[id] = NULL; 1328 kfree(tp_rfk); 1329 } 1330} 1331 1332static void printk_deprecated_rfkill_attribute(const char * const what) 1333{ 1334 printk_deprecated_attribute(what, 1335 "Please switch to generic rfkill before year 2010"); 1336} 1337 1338/* sysfs <radio> enable ------------------------------------------------ */ 1339static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1340 struct device_attribute *attr, 1341 char *buf) 1342{ 1343 int status; 1344 1345 printk_deprecated_rfkill_attribute(attr->attr.name); 1346 1347 /* This is in the ABI... */ 1348 if (tpacpi_rfk_check_hwblock_state()) { 1349 status = TPACPI_RFK_RADIO_OFF; 1350 } else { 1351 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1352 if (status < 0) 1353 return status; 1354 } 1355 1356 return snprintf(buf, PAGE_SIZE, "%d\n", 1357 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1358} 1359 1360static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1361 struct device_attribute *attr, 1362 const char *buf, size_t count) 1363{ 1364 unsigned long t; 1365 int res; 1366 1367 printk_deprecated_rfkill_attribute(attr->attr.name); 1368 1369 if (parse_strtoul(buf, 1, &t)) 1370 return -EINVAL; 1371 1372 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1373 1374 /* This is in the ABI... */ 1375 if (tpacpi_rfk_check_hwblock_state() && !!t) 1376 return -EPERM; 1377 1378 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1379 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1380 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1381 1382 return (res < 0) ? res : count; 1383} 1384 1385/* procfs -------------------------------------------------------------- */ 1386static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, char *p) 1387{ 1388 int len = 0; 1389 1390 if (id >= TPACPI_RFK_SW_MAX) 1391 len += sprintf(p + len, "status:\t\tnot supported\n"); 1392 else { 1393 int status; 1394 1395 /* This is in the ABI... */ 1396 if (tpacpi_rfk_check_hwblock_state()) { 1397 status = TPACPI_RFK_RADIO_OFF; 1398 } else { 1399 status = tpacpi_rfk_update_swstate( 1400 tpacpi_rfkill_switches[id]); 1401 if (status < 0) 1402 return status; 1403 } 1404 1405 len += sprintf(p + len, "status:\t\t%s\n", 1406 (status == TPACPI_RFK_RADIO_ON) ? 1407 "enabled" : "disabled"); 1408 len += sprintf(p + len, "commands:\tenable, disable\n"); 1409 } 1410 1411 return len; 1412} 1413 1414static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1415{ 1416 char *cmd; 1417 int status = -1; 1418 int res = 0; 1419 1420 if (id >= TPACPI_RFK_SW_MAX) 1421 return -ENODEV; 1422 1423 while ((cmd = next_cmd(&buf))) { 1424 if (strlencmp(cmd, "enable") == 0) 1425 status = TPACPI_RFK_RADIO_ON; 1426 else if (strlencmp(cmd, "disable") == 0) 1427 status = TPACPI_RFK_RADIO_OFF; 1428 else 1429 return -EINVAL; 1430 } 1431 1432 if (status != -1) { 1433 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1434 (status == TPACPI_RFK_RADIO_ON) ? 1435 "enable" : "disable", 1436 tpacpi_rfkill_names[id]); 1437 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1438 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1439 } 1440 1441 return res; 1442} 1443 1444/************************************************************************* 1445 * thinkpad-acpi driver attributes 1446 */ 1447 1448/* interface_version --------------------------------------------------- */ 1449static ssize_t tpacpi_driver_interface_version_show( 1450 struct device_driver *drv, 1451 char *buf) 1452{ 1453 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); 1454} 1455 1456static DRIVER_ATTR(interface_version, S_IRUGO, 1457 tpacpi_driver_interface_version_show, NULL); 1458 1459/* debug_level --------------------------------------------------------- */ 1460static ssize_t tpacpi_driver_debug_show(struct device_driver *drv, 1461 char *buf) 1462{ 1463 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); 1464} 1465 1466static ssize_t tpacpi_driver_debug_store(struct device_driver *drv, 1467 const char *buf, size_t count) 1468{ 1469 unsigned long t; 1470 1471 if (parse_strtoul(buf, 0xffff, &t)) 1472 return -EINVAL; 1473 1474 dbg_level = t; 1475 1476 return count; 1477} 1478 1479static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, 1480 tpacpi_driver_debug_show, tpacpi_driver_debug_store); 1481 1482/* version ------------------------------------------------------------- */ 1483static ssize_t tpacpi_driver_version_show(struct device_driver *drv, 1484 char *buf) 1485{ 1486 return snprintf(buf, PAGE_SIZE, "%s v%s\n", 1487 TPACPI_DESC, TPACPI_VERSION); 1488} 1489 1490static DRIVER_ATTR(version, S_IRUGO, 1491 tpacpi_driver_version_show, NULL); 1492 1493/* --------------------------------------------------------------------- */ 1494 1495#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1496 1497/* wlsw_emulstate ------------------------------------------------------ */ 1498static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv, 1499 char *buf) 1500{ 1501 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate); 1502} 1503 1504static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv, 1505 const char *buf, size_t count) 1506{ 1507 unsigned long t; 1508 1509 if (parse_strtoul(buf, 1, &t)) 1510 return -EINVAL; 1511 1512 if (tpacpi_wlsw_emulstate != !!t) { 1513 tpacpi_wlsw_emulstate = !!t; 1514 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1515 } 1516 1517 return count; 1518} 1519 1520static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO, 1521 tpacpi_driver_wlsw_emulstate_show, 1522 tpacpi_driver_wlsw_emulstate_store); 1523 1524/* bluetooth_emulstate ------------------------------------------------- */ 1525static ssize_t tpacpi_driver_bluetooth_emulstate_show( 1526 struct device_driver *drv, 1527 char *buf) 1528{ 1529 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate); 1530} 1531 1532static ssize_t tpacpi_driver_bluetooth_emulstate_store( 1533 struct device_driver *drv, 1534 const char *buf, size_t count) 1535{ 1536 unsigned long t; 1537 1538 if (parse_strtoul(buf, 1, &t)) 1539 return -EINVAL; 1540 1541 tpacpi_bluetooth_emulstate = !!t; 1542 1543 return count; 1544} 1545 1546static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO, 1547 tpacpi_driver_bluetooth_emulstate_show, 1548 tpacpi_driver_bluetooth_emulstate_store); 1549 1550/* wwan_emulstate ------------------------------------------------- */ 1551static ssize_t tpacpi_driver_wwan_emulstate_show( 1552 struct device_driver *drv, 1553 char *buf) 1554{ 1555 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate); 1556} 1557 1558static ssize_t tpacpi_driver_wwan_emulstate_store( 1559 struct device_driver *drv, 1560 const char *buf, size_t count) 1561{ 1562 unsigned long t; 1563 1564 if (parse_strtoul(buf, 1, &t)) 1565 return -EINVAL; 1566 1567 tpacpi_wwan_emulstate = !!t; 1568 1569 return count; 1570} 1571 1572static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO, 1573 tpacpi_driver_wwan_emulstate_show, 1574 tpacpi_driver_wwan_emulstate_store); 1575 1576/* uwb_emulstate ------------------------------------------------- */ 1577static ssize_t tpacpi_driver_uwb_emulstate_show( 1578 struct device_driver *drv, 1579 char *buf) 1580{ 1581 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate); 1582} 1583 1584static ssize_t tpacpi_driver_uwb_emulstate_store( 1585 struct device_driver *drv, 1586 const char *buf, size_t count) 1587{ 1588 unsigned long t; 1589 1590 if (parse_strtoul(buf, 1, &t)) 1591 return -EINVAL; 1592 1593 tpacpi_uwb_emulstate = !!t; 1594 1595 return count; 1596} 1597 1598static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO, 1599 tpacpi_driver_uwb_emulstate_show, 1600 tpacpi_driver_uwb_emulstate_store); 1601#endif 1602 1603/* --------------------------------------------------------------------- */ 1604 1605static struct driver_attribute *tpacpi_driver_attributes[] = { 1606 &driver_attr_debug_level, &driver_attr_version, 1607 &driver_attr_interface_version, 1608}; 1609 1610static int __init tpacpi_create_driver_attributes(struct device_driver *drv) 1611{ 1612 int i, res; 1613 1614 i = 0; 1615 res = 0; 1616 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { 1617 res = driver_create_file(drv, tpacpi_driver_attributes[i]); 1618 i++; 1619 } 1620 1621#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1622 if (!res && dbg_wlswemul) 1623 res = driver_create_file(drv, &driver_attr_wlsw_emulstate); 1624 if (!res && dbg_bluetoothemul) 1625 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate); 1626 if (!res && dbg_wwanemul) 1627 res = driver_create_file(drv, &driver_attr_wwan_emulstate); 1628 if (!res && dbg_uwbemul) 1629 res = driver_create_file(drv, &driver_attr_uwb_emulstate); 1630#endif 1631 1632 return res; 1633} 1634 1635static void tpacpi_remove_driver_attributes(struct device_driver *drv) 1636{ 1637 int i; 1638 1639 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) 1640 driver_remove_file(drv, tpacpi_driver_attributes[i]); 1641 1642#ifdef THINKPAD_ACPI_DEBUGFACILITIES 1643 driver_remove_file(drv, &driver_attr_wlsw_emulstate); 1644 driver_remove_file(drv, &driver_attr_bluetooth_emulstate); 1645 driver_remove_file(drv, &driver_attr_wwan_emulstate); 1646 driver_remove_file(drv, &driver_attr_uwb_emulstate); 1647#endif 1648} 1649 1650/************************************************************************* 1651 * Firmware Data 1652 */ 1653 1654/* 1655 * Table of recommended minimum BIOS versions 1656 * 1657 * Reasons for listing: 1658 * 1. Stable BIOS, listed because the unknown ammount of 1659 * bugs and bad ACPI behaviour on older versions 1660 * 1661 * 2. BIOS or EC fw with known bugs that trigger on Linux 1662 * 1663 * 3. BIOS with known reduced functionality in older versions 1664 * 1665 * We recommend the latest BIOS and EC version. 1666 * We only support the latest BIOS and EC fw version as a rule. 1667 * 1668 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1669 * Information from users in ThinkWiki 1670 * 1671 * WARNING: we use this table also to detect that the machine is 1672 * a ThinkPad in some cases, so don't remove entries lightly. 1673 */ 1674 1675#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1676 { .vendor = (__v), \ 1677 .bios = TPID(__id1, __id2), \ 1678 .ec = TPACPI_MATCH_ANY, \ 1679 .quirks = TPACPI_MATCH_ANY << 16 \ 1680 | (__bv1) << 8 | (__bv2) } 1681 1682#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1683 __eid, __ev1, __ev2) \ 1684 { .vendor = (__v), \ 1685 .bios = TPID(__bid1, __bid2), \ 1686 .ec = __eid, \ 1687 .quirks = (__ev1) << 24 | (__ev2) << 16 \ 1688 | (__bv1) << 8 | (__bv2) } 1689 1690#define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1691 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1692 1693/* Outdated IBM BIOSes often lack the EC id string */ 1694#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1695 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1696 __bv1, __bv2, TPID(__id1, __id2), \ 1697 __ev1, __ev2), \ 1698 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1699 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1700 __ev1, __ev2) 1701 1702/* Outdated IBM BIOSes often lack the EC id string */ 1703#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1704 __eid1, __eid2, __ev1, __ev2) \ 1705 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1706 __bv1, __bv2, TPID(__eid1, __eid2), \ 1707 __ev1, __ev2), \ 1708 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1709 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1710 __ev1, __ev2) 1711 1712#define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1713 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1714 1715#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1716 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1717 __bv1, __bv2, TPID(__id1, __id2), \ 1718 __ev1, __ev2) 1719 1720#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1721 __eid1, __eid2, __ev1, __ev2) \ 1722 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1723 __bv1, __bv2, TPID(__eid1, __eid2), \ 1724 __ev1, __ev2) 1725 1726static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1727 /* Numeric models ------------------ */ 1728 /* FW MODEL BIOS VERS */ 1729 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1730 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1731 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1732 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1733 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1734 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1735 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1736 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1737 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1738 1739 /* A-series ------------------------- */ 1740 /* FW MODEL BIOS VERS EC VERS */ 1741 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1742 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1743 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1744 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1745 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1746 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1747 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1748 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1749 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1750 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1751 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1752 1753 /* G-series ------------------------- */ 1754 /* FW MODEL BIOS VERS */ 1755 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1756 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1757 1758 /* R-series, T-series --------------- */ 1759 /* FW MODEL BIOS VERS EC VERS */ 1760 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1761 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1762 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1763 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1764 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1765 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1766 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1767 T40/p, T41/p, T42/p (1) */ 1768 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1769 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1770 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1771 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1772 1773 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1774 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1775 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1776 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1777 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1778 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1779 1780 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1781 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1782 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1783 1784 /* BIOS FW BIOS VERS EC FW EC VERS */ 1785 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1786 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1787 1788 /* X-series ------------------------- */ 1789 /* FW MODEL BIOS VERS EC VERS */ 1790 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1791 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1792 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1793 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1794 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1795 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1796 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1797 1798 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1799 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1800 1801 /* (0) - older versions lack DMI EC fw string and functionality */ 1802 /* (1) - older versions known to lack functionality */ 1803}; 1804 1805#undef TPV_QL1 1806#undef TPV_QL0 1807#undef TPV_QI2 1808#undef TPV_QI1 1809#undef TPV_QI0 1810#undef TPV_Q_X 1811#undef TPV_Q 1812 1813static void __init tpacpi_check_outdated_fw(void) 1814{ 1815 unsigned long fwvers; 1816 u16 ec_version, bios_version; 1817 1818 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1819 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1820 1821 if (!fwvers) 1822 return; 1823 1824 bios_version = fwvers & 0xffffU; 1825 ec_version = (fwvers >> 16) & 0xffffU; 1826 1827 /* note that unknown versions are set to 0x0000 and we use that */ 1828 if ((bios_version > thinkpad_id.bios_release) || 1829 (ec_version > thinkpad_id.ec_release && 1830 ec_version != TPACPI_MATCH_ANY)) { 1831 /* 1832 * The changelogs would let us track down the exact 1833 * reason, but it is just too much of a pain to track 1834 * it. We only list BIOSes that are either really 1835 * broken, or really stable to begin with, so it is 1836 * best if the user upgrades the firmware anyway. 1837 */ 1838 printk(TPACPI_WARN 1839 "WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1840 printk(TPACPI_WARN 1841 "WARNING: This firmware may be missing critical bug " 1842 "fixes and/or important features\n"); 1843 } 1844} 1845 1846static bool __init tpacpi_is_fw_known(void) 1847{ 1848 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1849 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1850} 1851 1852/**************************************************************************** 1853 **************************************************************************** 1854 * 1855 * Subdrivers 1856 * 1857 **************************************************************************** 1858 ****************************************************************************/ 1859 1860/************************************************************************* 1861 * thinkpad-acpi init subdriver 1862 */ 1863 1864static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm) 1865{ 1866 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 1867 printk(TPACPI_INFO "%s\n", TPACPI_URL); 1868 1869 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n", 1870 (thinkpad_id.bios_version_str) ? 1871 thinkpad_id.bios_version_str : "unknown", 1872 (thinkpad_id.ec_version_str) ? 1873 thinkpad_id.ec_version_str : "unknown"); 1874 1875 if (thinkpad_id.vendor && thinkpad_id.model_str) 1876 printk(TPACPI_INFO "%s %s, model %s\n", 1877 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 1878 "IBM" : ((thinkpad_id.vendor == 1879 PCI_VENDOR_ID_LENOVO) ? 1880 "Lenovo" : "Unknown vendor"), 1881 thinkpad_id.model_str, 1882 (thinkpad_id.nummodel_str) ? 1883 thinkpad_id.nummodel_str : "unknown"); 1884 1885 tpacpi_check_outdated_fw(); 1886 return 0; 1887} 1888 1889static int thinkpad_acpi_driver_read(char *p) 1890{ 1891 int len = 0; 1892 1893 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC); 1894 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION); 1895 1896 return len; 1897} 1898 1899static struct ibm_struct thinkpad_acpi_driver_data = { 1900 .name = "driver", 1901 .read = thinkpad_acpi_driver_read, 1902}; 1903 1904/************************************************************************* 1905 * Hotkey subdriver 1906 */ 1907 1908/* 1909 * ThinkPad firmware event model 1910 * 1911 * The ThinkPad firmware has two main event interfaces: normal ACPI 1912 * notifications (which follow the ACPI standard), and a private event 1913 * interface. 1914 * 1915 * The private event interface also issues events for the hotkeys. As 1916 * the driver gained features, the event handling code ended up being 1917 * built around the hotkey subdriver. This will need to be refactored 1918 * to a more formal event API eventually. 1919 * 1920 * Some "hotkeys" are actually supposed to be used as event reports, 1921 * such as "brightness has changed", "volume has changed", depending on 1922 * the ThinkPad model and how the firmware is operating. 1923 * 1924 * Unlike other classes, hotkey-class events have mask/unmask control on 1925 * non-ancient firmware. However, how it behaves changes a lot with the 1926 * firmware model and version. 1927 */ 1928 1929enum { /* hot key scan codes (derived from ACPI DSDT) */ 1930 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1931 TP_ACPI_HOTKEYSCAN_FNF2, 1932 TP_ACPI_HOTKEYSCAN_FNF3, 1933 TP_ACPI_HOTKEYSCAN_FNF4, 1934 TP_ACPI_HOTKEYSCAN_FNF5, 1935 TP_ACPI_HOTKEYSCAN_FNF6, 1936 TP_ACPI_HOTKEYSCAN_FNF7, 1937 TP_ACPI_HOTKEYSCAN_FNF8, 1938 TP_ACPI_HOTKEYSCAN_FNF9, 1939 TP_ACPI_HOTKEYSCAN_FNF10, 1940 TP_ACPI_HOTKEYSCAN_FNF11, 1941 TP_ACPI_HOTKEYSCAN_FNF12, 1942 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1943 TP_ACPI_HOTKEYSCAN_FNINSERT, 1944 TP_ACPI_HOTKEYSCAN_FNDELETE, 1945 TP_ACPI_HOTKEYSCAN_FNHOME, 1946 TP_ACPI_HOTKEYSCAN_FNEND, 1947 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1948 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1949 TP_ACPI_HOTKEYSCAN_FNSPACE, 1950 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1951 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1952 TP_ACPI_HOTKEYSCAN_MUTE, 1953 TP_ACPI_HOTKEYSCAN_THINKPAD, 1954}; 1955 1956enum { /* Keys/events available through NVRAM polling */ 1957 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1958 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1959}; 1960 1961enum { /* Positions of some of the keys in hotkey masks */ 1962 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1963 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1964 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1965 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1966 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1967 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1968 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1969 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1970 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1971 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1972 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1973}; 1974 1975enum { /* NVRAM to ACPI HKEY group map */ 1976 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1977 TP_ACPI_HKEY_ZOOM_MASK | 1978 TP_ACPI_HKEY_DISPSWTCH_MASK | 1979 TP_ACPI_HKEY_HIBERNATE_MASK, 1980 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1981 TP_ACPI_HKEY_BRGHTDWN_MASK, 1982 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1983 TP_ACPI_HKEY_VOLDWN_MASK | 1984 TP_ACPI_HKEY_MUTE_MASK, 1985}; 1986 1987#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1988struct tp_nvram_state { 1989 u16 thinkpad_toggle:1; 1990 u16 zoom_toggle:1; 1991 u16 display_toggle:1; 1992 u16 thinklight_toggle:1; 1993 u16 hibernate_toggle:1; 1994 u16 displayexp_toggle:1; 1995 u16 display_state:1; 1996 u16 brightness_toggle:1; 1997 u16 volume_toggle:1; 1998 u16 mute:1; 1999 2000 u8 brightness_level; 2001 u8 volume_level; 2002}; 2003 2004/* kthread for the hotkey poller */ 2005static struct task_struct *tpacpi_hotkey_task; 2006 2007/* Acquired while the poller kthread is running, use to sync start/stop */ 2008static struct mutex hotkey_thread_mutex; 2009 2010/* 2011 * Acquire mutex to write poller control variables as an 2012 * atomic block. 2013 * 2014 * Increment hotkey_config_change when changing them if you 2015 * want the kthread to forget old state. 2016 * 2017 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 2018 */ 2019static struct mutex hotkey_thread_data_mutex; 2020static unsigned int hotkey_config_change; 2021 2022/* 2023 * hotkey poller control variables 2024 * 2025 * Must be atomic or readers will also need to acquire mutex 2026 * 2027 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 2028 * should be used only when the changes need to be taken as 2029 * a block, OR when one needs to force the kthread to forget 2030 * old state. 2031 */ 2032static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 2033static unsigned int hotkey_poll_freq = 10; /* Hz */ 2034 2035#define HOTKEY_CONFIG_CRITICAL_START \ 2036 do { \ 2037 mutex_lock(&hotkey_thread_data_mutex); \ 2038 hotkey_config_change++; \ 2039 } while (0); 2040#define HOTKEY_CONFIG_CRITICAL_END \ 2041 mutex_unlock(&hotkey_thread_data_mutex); 2042 2043#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2044 2045#define hotkey_source_mask 0U 2046#define HOTKEY_CONFIG_CRITICAL_START 2047#define HOTKEY_CONFIG_CRITICAL_END 2048 2049#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2050 2051static struct mutex hotkey_mutex; 2052 2053static enum { /* Reasons for waking up */ 2054 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 2055 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 2056 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 2057} hotkey_wakeup_reason; 2058 2059static int hotkey_autosleep_ack; 2060 2061static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 2062static u32 hotkey_all_mask; /* all events supported in fw */ 2063static u32 hotkey_reserved_mask; /* events better left disabled */ 2064static u32 hotkey_driver_mask; /* events needed by the driver */ 2065static u32 hotkey_user_mask; /* events visible to userspace */ 2066static u32 hotkey_acpi_mask; /* events enabled in firmware */ 2067 2068static unsigned int hotkey_report_mode; 2069 2070static u16 *hotkey_keycode_map; 2071 2072static struct attribute_set *hotkey_dev_attributes; 2073 2074static void tpacpi_driver_event(const unsigned int hkey_event); 2075static void hotkey_driver_event(const unsigned int scancode); 2076 2077/* HKEY.MHKG() return bits */ 2078#define TP_HOTKEY_TABLET_MASK (1 << 3) 2079 2080static int hotkey_get_wlsw(void) 2081{ 2082 int status; 2083 2084 if (!tp_features.hotkey_wlsw) 2085 return -ENODEV; 2086 2087#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 2088 if (dbg_wlswemul) 2089 return (tpacpi_wlsw_emulstate) ? 2090 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2091#endif 2092 2093 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 2094 return -EIO; 2095 2096 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 2097} 2098 2099static int hotkey_get_tablet_mode(int *status) 2100{ 2101 int s; 2102 2103 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2104 return -EIO; 2105 2106 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2107 return 0; 2108} 2109 2110/* 2111 * Reads current event mask from firmware, and updates 2112 * hotkey_acpi_mask accordingly. Also resets any bits 2113 * from hotkey_user_mask that are unavailable to be 2114 * delivered (shadow requirement of the userspace ABI). 2115 * 2116 * Call with hotkey_mutex held 2117 */ 2118static int hotkey_mask_get(void) 2119{ 2120 if (tp_features.hotkey_mask) { 2121 u32 m = 0; 2122 2123 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2124 return -EIO; 2125 2126 hotkey_acpi_mask = m; 2127 } else { 2128 /* no mask support doesn't mean no event support... */ 2129 hotkey_acpi_mask = hotkey_all_mask; 2130 } 2131 2132 /* sync userspace-visible mask */ 2133 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2134 2135 return 0; 2136} 2137 2138void static hotkey_mask_warn_incomplete_mask(void) 2139{ 2140 /* log only what the user can fix... */ 2141 const u32 wantedmask = hotkey_driver_mask & 2142 ~(hotkey_acpi_mask | hotkey_source_mask) & 2143 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2144 2145 if (wantedmask) 2146 printk(TPACPI_NOTICE 2147 "required events 0x%08x not enabled!\n", 2148 wantedmask); 2149} 2150 2151/* 2152 * Set the firmware mask when supported 2153 * 2154 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2155 * 2156 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2157 * 2158 * Call with hotkey_mutex held 2159 */ 2160static int hotkey_mask_set(u32 mask) 2161{ 2162 int i; 2163 int rc = 0; 2164 2165 const u32 fwmask = mask & ~hotkey_source_mask; 2166 2167 if (tp_features.hotkey_mask) { 2168 for (i = 0; i < 32; i++) { 2169 if (!acpi_evalf(hkey_handle, 2170 NULL, "MHKM", "vdd", i + 1, 2171 !!(mask & (1 << i)))) { 2172 rc = -EIO; 2173 break; 2174 } 2175 } 2176 } 2177 2178 /* 2179 * We *must* make an inconditional call to hotkey_mask_get to 2180 * refresh hotkey_acpi_mask and update hotkey_user_mask 2181 * 2182 * Take the opportunity to also log when we cannot _enable_ 2183 * a given event. 2184 */ 2185 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2186 printk(TPACPI_NOTICE 2187 "asked for hotkey mask 0x%08x, but " 2188 "firmware forced it to 0x%08x\n", 2189 fwmask, hotkey_acpi_mask); 2190 } 2191 2192 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2193 hotkey_mask_warn_incomplete_mask(); 2194 2195 return rc; 2196} 2197 2198/* 2199 * Sets hotkey_user_mask and tries to set the firmware mask 2200 * 2201 * Call with hotkey_mutex held 2202 */ 2203static int hotkey_user_mask_set(const u32 mask) 2204{ 2205 int rc; 2206 2207 /* Give people a chance to notice they are doing something that 2208 * is bound to go boom on their users sooner or later */ 2209 if (!tp_warned.hotkey_mask_ff && 2210 (mask == 0xffff || mask == 0xffffff || 2211 mask == 0xffffffff)) { 2212 tp_warned.hotkey_mask_ff = 1; 2213 printk(TPACPI_NOTICE 2214 "setting the hotkey mask to 0x%08x is likely " 2215 "not the best way to go about it\n", mask); 2216 printk(TPACPI_NOTICE 2217 "please consider using the driver defaults, " 2218 "and refer to up-to-date thinkpad-acpi " 2219 "documentation\n"); 2220 } 2221 2222 /* Try to enable what the user asked for, plus whatever we need. 2223 * this syncs everything but won't enable bits in hotkey_user_mask */ 2224 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2225 2226 /* Enable the available bits in hotkey_user_mask */ 2227 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2228 2229 return rc; 2230} 2231 2232/* 2233 * Sets the driver hotkey mask. 2234 * 2235 * Can be called even if the hotkey subdriver is inactive 2236 */ 2237static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2238{ 2239 int rc; 2240 2241 /* Do the right thing if hotkey_init has not been called yet */ 2242 if (!tp_features.hotkey) { 2243 hotkey_driver_mask = mask; 2244 return 0; 2245 } 2246 2247 mutex_lock(&hotkey_mutex); 2248 2249 HOTKEY_CONFIG_CRITICAL_START 2250 hotkey_driver_mask = mask; 2251#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2252 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2253#endif 2254 HOTKEY_CONFIG_CRITICAL_END 2255 2256 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2257 ~hotkey_source_mask); 2258 mutex_unlock(&hotkey_mutex); 2259 2260 return rc; 2261} 2262 2263static int hotkey_status_get(int *status) 2264{ 2265 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2266 return -EIO; 2267 2268 return 0; 2269} 2270 2271static int hotkey_status_set(bool enable) 2272{ 2273 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2274 return -EIO; 2275 2276 return 0; 2277} 2278 2279static void tpacpi_input_send_tabletsw(void) 2280{ 2281 int state; 2282 2283 if (tp_features.hotkey_tablet && 2284 !hotkey_get_tablet_mode(&state)) { 2285 mutex_lock(&tpacpi_inputdev_send_mutex); 2286 2287 input_report_switch(tpacpi_inputdev, 2288 SW_TABLET_MODE, !!state); 2289 input_sync(tpacpi_inputdev); 2290 2291 mutex_unlock(&tpacpi_inputdev_send_mutex); 2292 } 2293} 2294 2295/* Do NOT call without validating scancode first */ 2296static void tpacpi_input_send_key(const unsigned int scancode) 2297{ 2298 const unsigned int keycode = hotkey_keycode_map[scancode]; 2299 2300 if (keycode != KEY_RESERVED) { 2301 mutex_lock(&tpacpi_inputdev_send_mutex); 2302 2303 input_report_key(tpacpi_inputdev, keycode, 1); 2304 if (keycode == KEY_UNKNOWN) 2305 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, 2306 scancode); 2307 input_sync(tpacpi_inputdev); 2308 2309 input_report_key(tpacpi_inputdev, keycode, 0); 2310 if (keycode == KEY_UNKNOWN) 2311 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, 2312 scancode); 2313 input_sync(tpacpi_inputdev); 2314 2315 mutex_unlock(&tpacpi_inputdev_send_mutex); 2316 } 2317} 2318 2319/* Do NOT call without validating scancode first */ 2320static void tpacpi_input_send_key_masked(const unsigned int scancode) 2321{ 2322 hotkey_driver_event(scancode); 2323 if (hotkey_user_mask & (1 << scancode)) 2324 tpacpi_input_send_key(scancode); 2325} 2326 2327#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2328static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2329 2330/* Do NOT call without validating scancode first */ 2331static void tpacpi_hotkey_send_key(unsigned int scancode) 2332{ 2333 tpacpi_input_send_key_masked(scancode); 2334 if (hotkey_report_mode < 2) { 2335 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device, 2336 0x80, TP_HKEY_EV_HOTKEY_BASE + scancode); 2337 } 2338} 2339 2340static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2341{ 2342 u8 d; 2343 2344 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2345 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2346 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2347 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2348 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2349 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2350 } 2351 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) { 2352 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2353 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2354 } 2355 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2356 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2357 n->displayexp_toggle = 2358 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2359 } 2360 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2361 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2362 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2363 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2364 n->brightness_toggle = 2365 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2366 } 2367 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2368 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2369 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2370 >> TP_NVRAM_POS_LEVEL_VOLUME; 2371 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2372 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2373 } 2374} 2375 2376static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2377 struct tp_nvram_state *newn, 2378 const u32 event_mask) 2379{ 2380 2381#define TPACPI_COMPARE_KEY(__scancode, __member) \ 2382 do { \ 2383 if ((event_mask & (1 << __scancode)) && \ 2384 oldn->__member != newn->__member) \ 2385 tpacpi_hotkey_send_key(__scancode); \ 2386 } while (0) 2387 2388#define TPACPI_MAY_SEND_KEY(__scancode) \ 2389 do { \ 2390 if (event_mask & (1 << __scancode)) \ 2391 tpacpi_hotkey_send_key(__scancode); \ 2392 } while (0) 2393 2394 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2395 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2396 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2397 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2398 2399 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2400 2401 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2402 2403 /* handle volume */ 2404 if (oldn->volume_toggle != newn->volume_toggle) { 2405 if (oldn->mute != newn->mute) { 2406 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2407 } 2408 if (oldn->volume_level > newn->volume_level) { 2409 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2410 } else if (oldn->volume_level < newn->volume_level) { 2411 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2412 } else if (oldn->mute == newn->mute) { 2413 /* repeated key presses that didn't change state */ 2414 if (newn->mute) { 2415 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2416 } else if (newn->volume_level != 0) { 2417 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2418 } else { 2419 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2420 } 2421 } 2422 } 2423 2424 /* handle brightness */ 2425 if (oldn->brightness_toggle != newn->brightness_toggle) { 2426 if (oldn->brightness_level < newn->brightness_level) { 2427 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2428 } else if (oldn->brightness_level > newn->brightness_level) { 2429 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2430 } else { 2431 /* repeated key presses that didn't change state */ 2432 if (newn->brightness_level != 0) { 2433 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2434 } else { 2435 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2436 } 2437 } 2438 } 2439 2440#undef TPACPI_COMPARE_KEY 2441#undef TPACPI_MAY_SEND_KEY 2442} 2443 2444/* 2445 * Polling driver 2446 * 2447 * We track all events in hotkey_source_mask all the time, since 2448 * most of them are edge-based. We only issue those requested by 2449 * hotkey_user_mask or hotkey_driver_mask, though. 2450 */ 2451static int hotkey_kthread(void *data) 2452{ 2453 struct tp_nvram_state s[2]; 2454 u32 poll_mask, event_mask; 2455 unsigned int si, so; 2456 unsigned long t; 2457 unsigned int change_detector, must_reset; 2458 unsigned int poll_freq; 2459 2460 mutex_lock(&hotkey_thread_mutex); 2461 2462 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2463 goto exit; 2464 2465 set_freezable(); 2466 2467 so = 0; 2468 si = 1; 2469 t = 0; 2470 2471 /* Initial state for compares */ 2472 mutex_lock(&hotkey_thread_data_mutex); 2473 change_detector = hotkey_config_change; 2474 poll_mask = hotkey_source_mask; 2475 event_mask = hotkey_source_mask & 2476 (hotkey_driver_mask | hotkey_user_mask); 2477 poll_freq = hotkey_poll_freq; 2478 mutex_unlock(&hotkey_thread_data_mutex); 2479 hotkey_read_nvram(&s[so], poll_mask); 2480 2481 while (!kthread_should_stop()) { 2482 if (t == 0) { 2483 if (likely(poll_freq)) 2484 t = 1000/poll_freq; 2485 else 2486 t = 100; /* should never happen... */ 2487 } 2488 t = msleep_interruptible(t); 2489 if (unlikely(kthread_should_stop())) 2490 break; 2491 must_reset = try_to_freeze(); 2492 if (t > 0 && !must_reset) 2493 continue; 2494 2495 mutex_lock(&hotkey_thread_data_mutex); 2496 if (must_reset || hotkey_config_change != change_detector) { 2497 /* forget old state on thaw or config change */ 2498 si = so; 2499 t = 0; 2500 change_detector = hotkey_config_change; 2501 } 2502 poll_mask = hotkey_source_mask; 2503 event_mask = hotkey_source_mask & 2504 (hotkey_driver_mask | hotkey_user_mask); 2505 poll_freq = hotkey_poll_freq; 2506 mutex_unlock(&hotkey_thread_data_mutex); 2507 2508 if (likely(poll_mask)) { 2509 hotkey_read_nvram(&s[si], poll_mask); 2510 if (likely(si != so)) { 2511 hotkey_compare_and_issue_event(&s[so], &s[si], 2512 event_mask); 2513 } 2514 } 2515 2516 so = si; 2517 si ^= 1; 2518 } 2519 2520exit: 2521 mutex_unlock(&hotkey_thread_mutex); 2522 return 0; 2523} 2524 2525/* call with hotkey_mutex held */ 2526static void hotkey_poll_stop_sync(void) 2527{ 2528 if (tpacpi_hotkey_task) { 2529 if (frozen(tpacpi_hotkey_task) || 2530 freezing(tpacpi_hotkey_task)) 2531 thaw_process(tpacpi_hotkey_task); 2532 2533 kthread_stop(tpacpi_hotkey_task); 2534 tpacpi_hotkey_task = NULL; 2535 mutex_lock(&hotkey_thread_mutex); 2536 /* at this point, the thread did exit */ 2537 mutex_unlock(&hotkey_thread_mutex); 2538 } 2539} 2540 2541/* call with hotkey_mutex held */ 2542static void hotkey_poll_setup(bool may_warn) 2543{ 2544 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2545 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2546 2547 if (hotkey_poll_freq > 0 && 2548 (poll_driver_mask || 2549 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2550 if (!tpacpi_hotkey_task) { 2551 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2552 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2553 if (IS_ERR(tpacpi_hotkey_task)) { 2554 tpacpi_hotkey_task = NULL; 2555 printk(TPACPI_ERR 2556 "could not create kernel thread " 2557 "for hotkey polling\n"); 2558 } 2559 } 2560 } else { 2561 hotkey_poll_stop_sync(); 2562 if (may_warn && (poll_driver_mask || poll_user_mask) && 2563 hotkey_poll_freq == 0) { 2564 printk(TPACPI_NOTICE 2565 "hot keys 0x%08x and/or events 0x%08x " 2566 "require polling, which is currently " 2567 "disabled\n", 2568 poll_user_mask, poll_driver_mask); 2569 } 2570 } 2571} 2572 2573static void hotkey_poll_setup_safe(bool may_warn) 2574{ 2575 mutex_lock(&hotkey_mutex); 2576 hotkey_poll_setup(may_warn); 2577 mutex_unlock(&hotkey_mutex); 2578} 2579 2580/* call with hotkey_mutex held */ 2581static void hotkey_poll_set_freq(unsigned int freq) 2582{ 2583 if (!freq) 2584 hotkey_poll_stop_sync(); 2585 2586 hotkey_poll_freq = freq; 2587} 2588 2589#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2590 2591static void hotkey_poll_setup_safe(bool __unused) 2592{ 2593} 2594 2595#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2596 2597static int hotkey_inputdev_open(struct input_dev *dev) 2598{ 2599 switch (tpacpi_lifecycle) { 2600 case TPACPI_LIFE_INIT: 2601 /* 2602 * hotkey_init will call hotkey_poll_setup_safe 2603 * at the appropriate moment 2604 */ 2605 return 0; 2606 case TPACPI_LIFE_EXITING: 2607 return -EBUSY; 2608 case TPACPI_LIFE_RUNNING: 2609 hotkey_poll_setup_safe(false); 2610 return 0; 2611 } 2612 2613 /* Should only happen if tpacpi_lifecycle is corrupt */ 2614 BUG(); 2615 return -EBUSY; 2616} 2617 2618static void hotkey_inputdev_close(struct input_dev *dev) 2619{ 2620 /* disable hotkey polling when possible */ 2621 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING && 2622 !(hotkey_source_mask & hotkey_driver_mask)) 2623 hotkey_poll_setup_safe(false); 2624} 2625 2626/* sysfs hotkey enable ------------------------------------------------- */ 2627static ssize_t hotkey_enable_show(struct device *dev, 2628 struct device_attribute *attr, 2629 char *buf) 2630{ 2631 int res, status; 2632 2633 printk_deprecated_attribute("hotkey_enable", 2634 "Hotkey reporting is always enabled"); 2635 2636 res = hotkey_status_get(&status); 2637 if (res) 2638 return res; 2639 2640 return snprintf(buf, PAGE_SIZE, "%d\n", status); 2641} 2642 2643static ssize_t hotkey_enable_store(struct device *dev, 2644 struct device_attribute *attr, 2645 const char *buf, size_t count) 2646{ 2647 unsigned long t; 2648 2649 printk_deprecated_attribute("hotkey_enable", 2650 "Hotkeys can be disabled through hotkey_mask"); 2651 2652 if (parse_strtoul(buf, 1, &t)) 2653 return -EINVAL; 2654 2655 if (t == 0) 2656 return -EPERM; 2657 2658 return count; 2659} 2660 2661static struct device_attribute dev_attr_hotkey_enable = 2662 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO, 2663 hotkey_enable_show, hotkey_enable_store); 2664 2665/* sysfs hotkey mask --------------------------------------------------- */ 2666static ssize_t hotkey_mask_show(struct device *dev, 2667 struct device_attribute *attr, 2668 char *buf) 2669{ 2670 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask); 2671} 2672 2673static ssize_t hotkey_mask_store(struct device *dev, 2674 struct device_attribute *attr, 2675 const char *buf, size_t count) 2676{ 2677 unsigned long t; 2678 int res; 2679 2680 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2681 return -EINVAL; 2682 2683 if (mutex_lock_killable(&hotkey_mutex)) 2684 return -ERESTARTSYS; 2685 2686 res = hotkey_user_mask_set(t); 2687 2688#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2689 hotkey_poll_setup(true); 2690#endif 2691 2692 mutex_unlock(&hotkey_mutex); 2693 2694 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2695 2696 return (res) ? res : count; 2697} 2698 2699static struct device_attribute dev_attr_hotkey_mask = 2700 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO, 2701 hotkey_mask_show, hotkey_mask_store); 2702 2703/* sysfs hotkey bios_enabled ------------------------------------------- */ 2704static ssize_t hotkey_bios_enabled_show(struct device *dev, 2705 struct device_attribute *attr, 2706 char *buf) 2707{ 2708 return sprintf(buf, "0\n"); 2709} 2710 2711static struct device_attribute dev_attr_hotkey_bios_enabled = 2712 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL); 2713 2714/* sysfs hotkey bios_mask ---------------------------------------------- */ 2715static ssize_t hotkey_bios_mask_show(struct device *dev, 2716 struct device_attribute *attr, 2717 char *buf) 2718{ 2719 printk_deprecated_attribute("hotkey_bios_mask", 2720 "This attribute is useless."); 2721 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); 2722} 2723 2724static struct device_attribute dev_attr_hotkey_bios_mask = 2725 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL); 2726 2727/* sysfs hotkey all_mask ----------------------------------------------- */ 2728static ssize_t hotkey_all_mask_show(struct device *dev, 2729 struct device_attribute *attr, 2730 char *buf) 2731{ 2732 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2733 hotkey_all_mask | hotkey_source_mask); 2734} 2735 2736static struct device_attribute dev_attr_hotkey_all_mask = 2737 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL); 2738 2739/* sysfs hotkey recommended_mask --------------------------------------- */ 2740static ssize_t hotkey_recommended_mask_show(struct device *dev, 2741 struct device_attribute *attr, 2742 char *buf) 2743{ 2744 return snprintf(buf, PAGE_SIZE, "0x%08x\n", 2745 (hotkey_all_mask | hotkey_source_mask) 2746 & ~hotkey_reserved_mask); 2747} 2748 2749static struct device_attribute dev_attr_hotkey_recommended_mask = 2750 __ATTR(hotkey_recommended_mask, S_IRUGO, 2751 hotkey_recommended_mask_show, NULL); 2752 2753#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2754 2755/* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2756static ssize_t hotkey_source_mask_show(struct device *dev, 2757 struct device_attribute *attr, 2758 char *buf) 2759{ 2760 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); 2761} 2762 2763static ssize_t hotkey_source_mask_store(struct device *dev, 2764 struct device_attribute *attr, 2765 const char *buf, size_t count) 2766{ 2767 unsigned long t; 2768 u32 r_ev; 2769 int rc; 2770 2771 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2772 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2773 return -EINVAL; 2774 2775 if (mutex_lock_killable(&hotkey_mutex)) 2776 return -ERESTARTSYS; 2777 2778 HOTKEY_CONFIG_CRITICAL_START 2779 hotkey_source_mask = t; 2780 HOTKEY_CONFIG_CRITICAL_END 2781 2782 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2783 ~hotkey_source_mask); 2784 hotkey_poll_setup(true); 2785 2786 /* check if events needed by the driver got disabled */ 2787 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2788 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2789 2790 mutex_unlock(&hotkey_mutex); 2791 2792 if (rc < 0) 2793 printk(TPACPI_ERR "hotkey_source_mask: failed to update the" 2794 "firmware event mask!\n"); 2795 2796 if (r_ev) 2797 printk(TPACPI_NOTICE "hotkey_source_mask: " 2798 "some important events were disabled: " 2799 "0x%04x\n", r_ev); 2800 2801 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2802 2803 return (rc < 0) ? rc : count; 2804} 2805 2806static struct device_attribute dev_attr_hotkey_source_mask = 2807 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO, 2808 hotkey_source_mask_show, hotkey_source_mask_store); 2809 2810/* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2811static ssize_t hotkey_poll_freq_show(struct device *dev, 2812 struct device_attribute *attr, 2813 char *buf) 2814{ 2815 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); 2816} 2817 2818static ssize_t hotkey_poll_freq_store(struct device *dev, 2819 struct device_attribute *attr, 2820 const char *buf, size_t count) 2821{ 2822 unsigned long t; 2823 2824 if (parse_strtoul(buf, 25, &t)) 2825 return -EINVAL; 2826 2827 if (mutex_lock_killable(&hotkey_mutex)) 2828 return -ERESTARTSYS; 2829 2830 hotkey_poll_set_freq(t); 2831 hotkey_poll_setup(true); 2832 2833 mutex_unlock(&hotkey_mutex); 2834 2835 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2836 2837 return count; 2838} 2839 2840static struct device_attribute dev_attr_hotkey_poll_freq = 2841 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO, 2842 hotkey_poll_freq_show, hotkey_poll_freq_store); 2843 2844#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2845 2846/* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2847static ssize_t hotkey_radio_sw_show(struct device *dev, 2848 struct device_attribute *attr, 2849 char *buf) 2850{ 2851 int res; 2852 res = hotkey_get_wlsw(); 2853 if (res < 0) 2854 return res; 2855 2856 /* Opportunistic update */ 2857 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2858 2859 return snprintf(buf, PAGE_SIZE, "%d\n", 2860 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2861} 2862 2863static struct device_attribute dev_attr_hotkey_radio_sw = 2864 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL); 2865 2866static void hotkey_radio_sw_notify_change(void) 2867{ 2868 if (tp_features.hotkey_wlsw) 2869 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2870 "hotkey_radio_sw"); 2871} 2872 2873/* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2874static ssize_t hotkey_tablet_mode_show(struct device *dev, 2875 struct device_attribute *attr, 2876 char *buf) 2877{ 2878 int res, s; 2879 res = hotkey_get_tablet_mode(&s); 2880 if (res < 0) 2881 return res; 2882 2883 return snprintf(buf, PAGE_SIZE, "%d\n", !!s); 2884} 2885 2886static struct device_attribute dev_attr_hotkey_tablet_mode = 2887 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL); 2888 2889static void hotkey_tablet_mode_notify_change(void) 2890{ 2891 if (tp_features.hotkey_tablet) 2892 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2893 "hotkey_tablet_mode"); 2894} 2895 2896/* sysfs hotkey report_mode -------------------------------------------- */ 2897static ssize_t hotkey_report_mode_show(struct device *dev, 2898 struct device_attribute *attr, 2899 char *buf) 2900{ 2901 return snprintf(buf, PAGE_SIZE, "%d\n", 2902 (hotkey_report_mode != 0) ? hotkey_report_mode : 1); 2903} 2904 2905static struct device_attribute dev_attr_hotkey_report_mode = 2906 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL); 2907 2908/* sysfs wakeup reason (pollable) -------------------------------------- */ 2909static ssize_t hotkey_wakeup_reason_show(struct device *dev, 2910 struct device_attribute *attr, 2911 char *buf) 2912{ 2913 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); 2914} 2915 2916static struct device_attribute dev_attr_hotkey_wakeup_reason = 2917 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 2918 2919static void hotkey_wakeup_reason_notify_change(void) 2920{ 2921 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2922 "wakeup_reason"); 2923} 2924 2925/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 2926static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 2927 struct device_attribute *attr, 2928 char *buf) 2929{ 2930 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); 2931} 2932 2933static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete = 2934 __ATTR(wakeup_hotunplug_complete, S_IRUGO, 2935 hotkey_wakeup_hotunplug_complete_show, NULL); 2936 2937static void hotkey_wakeup_hotunplug_complete_notify_change(void) 2938{ 2939 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2940 "wakeup_hotunplug_complete"); 2941} 2942 2943/* --------------------------------------------------------------------- */ 2944 2945static struct attribute *hotkey_attributes[] __initdata = { 2946 &dev_attr_hotkey_enable.attr, 2947 &dev_attr_hotkey_bios_enabled.attr, 2948 &dev_attr_hotkey_bios_mask.attr, 2949 &dev_attr_hotkey_report_mode.attr, 2950 &dev_attr_hotkey_wakeup_reason.attr, 2951 &dev_attr_hotkey_wakeup_hotunplug_complete.attr, 2952 &dev_attr_hotkey_mask.attr, 2953 &dev_attr_hotkey_all_mask.attr, 2954 &dev_attr_hotkey_recommended_mask.attr, 2955#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2956 &dev_attr_hotkey_source_mask.attr, 2957 &dev_attr_hotkey_poll_freq.attr, 2958#endif 2959}; 2960 2961/* 2962 * Sync both the hw and sw blocking state of all switches 2963 */ 2964static void tpacpi_send_radiosw_update(void) 2965{ 2966 int wlsw; 2967 2968 /* 2969 * We must sync all rfkill controllers *before* issuing any 2970 * rfkill input events, or we will race the rfkill core input 2971 * handler. 2972 * 2973 * tpacpi_inputdev_send_mutex works as a syncronization point 2974 * for the above. 2975 * 2976 * We optimize to avoid numerous calls to hotkey_get_wlsw. 2977 */ 2978 2979 wlsw = hotkey_get_wlsw(); 2980 2981 /* Sync hw blocking state first if it is hw-blocked */ 2982 if (wlsw == TPACPI_RFK_RADIO_OFF) 2983 tpacpi_rfk_update_hwblock_state(true); 2984 2985 /* Sync sw blocking state */ 2986 tpacpi_rfk_update_swstate_all(); 2987 2988 /* Sync hw blocking state last if it is hw-unblocked */ 2989 if (wlsw == TPACPI_RFK_RADIO_ON) 2990 tpacpi_rfk_update_hwblock_state(false); 2991 2992 /* Issue rfkill input event for WLSW switch */ 2993 if (!(wlsw < 0)) { 2994 mutex_lock(&tpacpi_inputdev_send_mutex); 2995 2996 input_report_switch(tpacpi_inputdev, 2997 SW_RFKILL_ALL, (wlsw > 0)); 2998 input_sync(tpacpi_inputdev); 2999 3000 mutex_unlock(&tpacpi_inputdev_send_mutex); 3001 } 3002 3003 /* 3004 * this can be unconditional, as we will poll state again 3005 * if userspace uses the notify to read data 3006 */ 3007 hotkey_radio_sw_notify_change(); 3008} 3009 3010static void hotkey_exit(void) 3011{ 3012#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3013 mutex_lock(&hotkey_mutex); 3014 hotkey_poll_stop_sync(); 3015 mutex_unlock(&hotkey_mutex); 3016#endif 3017 3018 if (hotkey_dev_attributes) 3019 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3020 3021 kfree(hotkey_keycode_map); 3022 3023 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3024 "restoring original HKEY status and mask\n"); 3025 /* yes, there is a bitwise or below, we want the 3026 * functions to be called even if one of them fail */ 3027 if (((tp_features.hotkey_mask && 3028 hotkey_mask_set(hotkey_orig_mask)) | 3029 hotkey_status_set(false)) != 0) 3030 printk(TPACPI_ERR 3031 "failed to restore hot key mask " 3032 "to BIOS defaults\n"); 3033} 3034 3035static void __init hotkey_unmap(const unsigned int scancode) 3036{ 3037 if (hotkey_keycode_map[scancode] != KEY_RESERVED) { 3038 clear_bit(hotkey_keycode_map[scancode], 3039 tpacpi_inputdev->keybit); 3040 hotkey_keycode_map[scancode] = KEY_RESERVED; 3041 } 3042} 3043 3044/* 3045 * HKEY quirks: 3046 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3047 */ 3048 3049#define TPACPI_HK_Q_INIMASK 0x0001 3050 3051static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3052 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3053 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3054 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3055 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3056 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3057 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3058 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3059 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3060 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3061 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3062 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3063 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3064 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3065 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3066 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3067 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3068 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3069 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3070 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3071}; 3072 3073static int __init hotkey_init(struct ibm_init_struct *iibm) 3074{ 3075 /* Requirements for changing the default keymaps: 3076 * 3077 * 1. Many of the keys are mapped to KEY_RESERVED for very 3078 * good reasons. Do not change them unless you have deep 3079 * knowledge on the IBM and Lenovo ThinkPad firmware for 3080 * the various ThinkPad models. The driver behaves 3081 * differently for KEY_RESERVED: such keys have their 3082 * hot key mask *unset* in mask_recommended, and also 3083 * in the initial hot key mask programmed into the 3084 * firmware at driver load time, which means the firm- 3085 * ware may react very differently if you change them to 3086 * something else; 3087 * 3088 * 2. You must be subscribed to the linux-thinkpad and 3089 * ibm-acpi-devel mailing lists, and you should read the 3090 * list archives since 2007 if you want to change the 3091 * keymaps. This requirement exists so that you will 3092 * know the past history of problems with the thinkpad- 3093 * acpi driver keymaps, and also that you will be 3094 * listening to any bug reports; 3095 * 3096 * 3. Do not send thinkpad-acpi specific patches directly to 3097 * for merging, *ever*. Send them to the linux-acpi 3098 * mailinglist for comments. Merging is to be done only 3099 * through acpi-test and the ACPI maintainer. 3100 * 3101 * If the above is too much to ask, don't change the keymap. 3102 * Ask the thinkpad-acpi maintainer to do it, instead. 3103 */ 3104 static u16 ibm_keycode_map[] __initdata = { 3105 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3106 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP, 3107 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3108 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3109 3110 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3111 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3112 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3113 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3114 3115 /* brightness: firmware always reacts to them */ 3116 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ 3117 KEY_RESERVED, /* 0x10: FN+END (brightness down) */ 3118 3119 /* Thinklight: firmware always react to it */ 3120 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3121 3122 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3123 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3124 3125 /* Volume: firmware always react to it and reprograms 3126 * the built-in *extra* mixer. Never map it to control 3127 * another mixer by default. */ 3128 KEY_RESERVED, /* 0x14: VOLUME UP */ 3129 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3130 KEY_RESERVED, /* 0x16: MUTE */ 3131 3132 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3133 3134 /* (assignments unknown, please report if found) */ 3135 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3136 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3137 }; 3138 static u16 lenovo_keycode_map[] __initdata = { 3139 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ 3140 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, 3141 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, 3142 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, 3143 3144 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ 3145 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ 3146 KEY_UNKNOWN, /* 0x0D: FN+INSERT */ 3147 KEY_UNKNOWN, /* 0x0E: FN+DELETE */ 3148 3149 /* These should be enabled --only-- when ACPI video 3150 * is disabled (i.e. in "vendor" mode), and are handled 3151 * in a special way by the init code */ 3152 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */ 3153 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */ 3154 3155 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ 3156 3157 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ 3158 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ 3159 3160 /* Volume: z60/z61, T60 (BIOS version?): firmware always 3161 * react to it and reprograms the built-in *extra* mixer. 3162 * Never map it to control another mixer by default. 3163 * 3164 * T60?, T61, R60?, R61: firmware and EC tries to send 3165 * these over the regular keyboard, so these are no-ops, 3166 * but there are still weird bugs re. MUTE, so do not 3167 * change unless you get test reports from all Lenovo 3168 * models. May cause the BIOS to interfere with the 3169 * HDA mixer. 3170 */ 3171 KEY_RESERVED, /* 0x14: VOLUME UP */ 3172 KEY_RESERVED, /* 0x15: VOLUME DOWN */ 3173 KEY_RESERVED, /* 0x16: MUTE */ 3174 3175 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ 3176 3177 /* (assignments unknown, please report if found) */ 3178 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3179 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, 3180 }; 3181 3182#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map) 3183#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map) 3184#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0]) 3185 3186 int res, i; 3187 int status; 3188 int hkeyv; 3189 3190 unsigned long quirks; 3191 3192 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3193 "initializing hotkey subdriver\n"); 3194 3195 BUG_ON(!tpacpi_inputdev); 3196 BUG_ON(tpacpi_inputdev->open != NULL || 3197 tpacpi_inputdev->close != NULL); 3198 3199 TPACPI_ACPIHANDLE_INIT(hkey); 3200 mutex_init(&hotkey_mutex); 3201 3202#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3203 mutex_init(&hotkey_thread_mutex); 3204 mutex_init(&hotkey_thread_data_mutex); 3205#endif 3206 3207 /* hotkey not supported on 570 */ 3208 tp_features.hotkey = hkey_handle != NULL; 3209 3210 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3211 "hotkeys are %s\n", 3212 str_supported(tp_features.hotkey)); 3213 3214 if (!tp_features.hotkey) 3215 return 1; 3216 3217 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3218 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3219 3220 tpacpi_disable_brightness_delay(); 3221 3222 /* MUST have enough space for all attributes to be added to 3223 * hotkey_dev_attributes */ 3224 hotkey_dev_attributes = create_attr_set( 3225 ARRAY_SIZE(hotkey_attributes) + 2, 3226 NULL); 3227 if (!hotkey_dev_attributes) 3228 return -ENOMEM; 3229 res = add_many_to_attr_set(hotkey_dev_attributes, 3230 hotkey_attributes, 3231 ARRAY_SIZE(hotkey_attributes)); 3232 if (res) 3233 goto err_exit; 3234 3235 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3236 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3237 for HKEY interface version 0x100 */ 3238 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3239 if ((hkeyv >> 8) != 1) { 3240 printk(TPACPI_ERR "unknown version of the " 3241 "HKEY interface: 0x%x\n", hkeyv); 3242 printk(TPACPI_ERR "please report this to %s\n", 3243 TPACPI_MAIL); 3244 } else { 3245 /* 3246 * MHKV 0x100 in A31, R40, R40e, 3247 * T4x, X31, and later 3248 */ 3249 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3250 "firmware HKEY interface version: 0x%x\n", 3251 hkeyv); 3252 3253 /* Paranoia check AND init hotkey_all_mask */ 3254 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3255 "MHKA", "qd")) { 3256 printk(TPACPI_ERR 3257 "missing MHKA handler, " 3258 "please report this to %s\n", 3259 TPACPI_MAIL); 3260 /* Fallback: pre-init for FN+F3,F4,F12 */ 3261 hotkey_all_mask = 0x080cU; 3262 } else { 3263 tp_features.hotkey_mask = 1; 3264 } 3265 } 3266 } 3267 3268 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3269 "hotkey masks are %s\n", 3270 str_supported(tp_features.hotkey_mask)); 3271 3272 /* Init hotkey_all_mask if not initialized yet */ 3273 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3274 (quirks & TPACPI_HK_Q_INIMASK)) 3275 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3276 3277 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3278 if (tp_features.hotkey_mask) { 3279 /* hotkey_source_mask *must* be zero for 3280 * the first hotkey_mask_get to return hotkey_orig_mask */ 3281 res = hotkey_mask_get(); 3282 if (res) 3283 goto err_exit; 3284 3285 hotkey_orig_mask = hotkey_acpi_mask; 3286 } else { 3287 hotkey_orig_mask = hotkey_all_mask; 3288 hotkey_acpi_mask = hotkey_all_mask; 3289 } 3290 3291#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3292 if (dbg_wlswemul) { 3293 tp_features.hotkey_wlsw = 1; 3294 printk(TPACPI_INFO 3295 "radio switch emulation enabled\n"); 3296 } else 3297#endif 3298 /* Not all thinkpads have a hardware radio switch */ 3299 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3300 tp_features.hotkey_wlsw = 1; 3301 printk(TPACPI_INFO 3302 "radio switch found; radios are %s\n", 3303 enabled(status, 0)); 3304 } 3305 if (tp_features.hotkey_wlsw) 3306 res = add_to_attr_set(hotkey_dev_attributes, 3307 &dev_attr_hotkey_radio_sw.attr); 3308 3309 /* For X41t, X60t, X61t Tablets... */ 3310 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) { 3311 tp_features.hotkey_tablet = 1; 3312 printk(TPACPI_INFO 3313 "possible tablet mode switch found; " 3314 "ThinkPad in %s mode\n", 3315 (status & TP_HOTKEY_TABLET_MASK)? 3316 "tablet" : "laptop"); 3317 res = add_to_attr_set(hotkey_dev_attributes, 3318 &dev_attr_hotkey_tablet_mode.attr); 3319 } 3320 3321 if (!res) 3322 res = register_attr_set_with_sysfs( 3323 hotkey_dev_attributes, 3324 &tpacpi_pdev->dev.kobj); 3325 if (res) 3326 goto err_exit; 3327 3328 /* Set up key map */ 3329 3330 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, 3331 GFP_KERNEL); 3332 if (!hotkey_keycode_map) { 3333 printk(TPACPI_ERR 3334 "failed to allocate memory for key map\n"); 3335 res = -ENOMEM; 3336 goto err_exit; 3337 } 3338 3339 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) { 3340 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3341 "using Lenovo default hot key map\n"); 3342 memcpy(hotkey_keycode_map, &lenovo_keycode_map, 3343 TPACPI_HOTKEY_MAP_SIZE); 3344 } else { 3345 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3346 "using IBM default hot key map\n"); 3347 memcpy(hotkey_keycode_map, &ibm_keycode_map, 3348 TPACPI_HOTKEY_MAP_SIZE); 3349 } 3350 3351 set_bit(EV_KEY, tpacpi_inputdev->evbit); 3352 set_bit(EV_MSC, tpacpi_inputdev->evbit); 3353 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit); 3354 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; 3355 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; 3356 tpacpi_inputdev->keycode = hotkey_keycode_map; 3357 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { 3358 if (hotkey_keycode_map[i] != KEY_RESERVED) { 3359 set_bit(hotkey_keycode_map[i], 3360 tpacpi_inputdev->keybit); 3361 } else { 3362 if (i < sizeof(hotkey_reserved_mask)*8) 3363 hotkey_reserved_mask |= 1 << i; 3364 } 3365 } 3366 3367 if (tp_features.hotkey_wlsw) { 3368 set_bit(EV_SW, tpacpi_inputdev->evbit); 3369 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit); 3370 } 3371 if (tp_features.hotkey_tablet) { 3372 set_bit(EV_SW, tpacpi_inputdev->evbit); 3373 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit); 3374 } 3375 3376 /* Do not issue duplicate brightness change events to 3377 * userspace */ 3378 if (!tp_features.bright_acpimode) 3379 /* update bright_acpimode... */ 3380 tpacpi_check_std_acpi_brightness_support(); 3381 3382 if (tp_features.bright_acpimode && acpi_video_backlight_support()) { 3383 printk(TPACPI_INFO 3384 "This ThinkPad has standard ACPI backlight " 3385 "brightness control, supported by the ACPI " 3386 "video driver\n"); 3387 printk(TPACPI_NOTICE 3388 "Disabling thinkpad-acpi brightness events " 3389 "by default...\n"); 3390 3391 /* Disable brightness up/down on Lenovo thinkpads when 3392 * ACPI is handling them, otherwise it is plain impossible 3393 * for userspace to do something even remotely sane */ 3394 hotkey_reserved_mask |= 3395 (1 << TP_ACPI_HOTKEYSCAN_FNHOME) 3396 | (1 << TP_ACPI_HOTKEYSCAN_FNEND); 3397 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME); 3398 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND); 3399 } 3400 3401#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3402 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3403 & ~hotkey_all_mask 3404 & ~hotkey_reserved_mask; 3405 3406 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3407 "hotkey source mask 0x%08x, polling freq %u\n", 3408 hotkey_source_mask, hotkey_poll_freq); 3409#endif 3410 3411 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3412 "enabling firmware HKEY event interface...\n"); 3413 res = hotkey_status_set(true); 3414 if (res) { 3415 hotkey_exit(); 3416 return res; 3417 } 3418 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3419 | hotkey_driver_mask) 3420 & ~hotkey_source_mask); 3421 if (res < 0 && res != -ENXIO) { 3422 hotkey_exit(); 3423 return res; 3424 } 3425 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3426 & ~hotkey_reserved_mask; 3427 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3428 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3429 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3430 3431 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3432 "legacy ibm/hotkey event reporting over procfs %s\n", 3433 (hotkey_report_mode < 2) ? 3434 "enabled" : "disabled"); 3435 3436 tpacpi_inputdev->open = &hotkey_inputdev_open; 3437 tpacpi_inputdev->close = &hotkey_inputdev_close; 3438 3439 hotkey_poll_setup_safe(true); 3440 tpacpi_send_radiosw_update(); 3441 tpacpi_input_send_tabletsw(); 3442 3443 return 0; 3444 3445err_exit: 3446 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); 3447 hotkey_dev_attributes = NULL; 3448 3449 return (res < 0)? res : 1; 3450} 3451 3452static bool hotkey_notify_hotkey(const u32 hkey, 3453 bool *send_acpi_ev, 3454 bool *ignore_acpi_ev) 3455{ 3456 /* 0x1000-0x1FFF: key presses */ 3457 unsigned int scancode = hkey & 0xfff; 3458 *send_acpi_ev = true; 3459 *ignore_acpi_ev = false; 3460 3461 if (scancode > 0 && scancode < 0x21) { 3462 scancode--; 3463 if (!(hotkey_source_mask & (1 << scancode))) { 3464 tpacpi_input_send_key_masked(scancode); 3465 *send_acpi_ev = false; 3466 } else { 3467 *ignore_acpi_ev = true; 3468 } 3469 return true; 3470 } 3471 return false; 3472} 3473 3474static bool hotkey_notify_wakeup(const u32 hkey, 3475 bool *send_acpi_ev, 3476 bool *ignore_acpi_ev) 3477{ 3478 /* 0x2000-0x2FFF: Wakeup reason */ 3479 *send_acpi_ev = true; 3480 *ignore_acpi_ev = false; 3481 3482 switch (hkey) { 3483 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3484 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3485 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3486 *ignore_acpi_ev = true; 3487 break; 3488 3489 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3490 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3491 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3492 *ignore_acpi_ev = true; 3493 break; 3494 3495 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3496 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3497 printk(TPACPI_ALERT 3498 "EMERGENCY WAKEUP: battery almost empty\n"); 3499 /* how to auto-heal: */ 3500 /* 2313: woke up from S3, go to S4/S5 */ 3501 /* 2413: woke up from S4, go to S5 */ 3502 break; 3503 3504 default: 3505 return false; 3506 } 3507 3508 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3509 printk(TPACPI_INFO 3510 "woke up due to a hot-unplug " 3511 "request...\n"); 3512 hotkey_wakeup_reason_notify_change(); 3513 } 3514 return true; 3515} 3516 3517static bool hotkey_notify_usrevent(const u32 hkey, 3518 bool *send_acpi_ev, 3519 bool *ignore_acpi_ev) 3520{ 3521 /* 0x5000-0x5FFF: human interface helpers */ 3522 *send_acpi_ev = true; 3523 *ignore_acpi_ev = false; 3524 3525 switch (hkey) { 3526 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 3527 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 3528 return true; 3529 3530 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 3531 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 3532 tpacpi_input_send_tabletsw(); 3533 hotkey_tablet_mode_notify_change(); 3534 *send_acpi_ev = false; 3535 return true; 3536 3537 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 3538 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 3539 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 3540 /* do not propagate these events */ 3541 *ignore_acpi_ev = true; 3542 return true; 3543 3544 default: 3545 return false; 3546 } 3547} 3548 3549static void thermal_dump_all_sensors(void); 3550 3551static bool hotkey_notify_thermal(const u32 hkey, 3552 bool *send_acpi_ev, 3553 bool *ignore_acpi_ev) 3554{ 3555 bool known = true; 3556 3557 /* 0x6000-0x6FFF: thermal alarms */ 3558 *send_acpi_ev = true; 3559 *ignore_acpi_ev = false; 3560 3561 switch (hkey) { 3562 case TP_HKEY_EV_THM_TABLE_CHANGED: 3563 printk(TPACPI_INFO 3564 "EC reports that Thermal Table has changed\n"); 3565 /* recommended action: do nothing, we don't have 3566 * Lenovo ATM information */ 3567 return true; 3568 case TP_HKEY_EV_ALARM_BAT_HOT: 3569 printk(TPACPI_CRIT 3570 "THERMAL ALARM: battery is too hot!\n"); 3571 /* recommended action: warn user through gui */ 3572 break; 3573 case TP_HKEY_EV_ALARM_BAT_XHOT: 3574 printk(TPACPI_ALERT 3575 "THERMAL EMERGENCY: battery is extremely hot!\n"); 3576 /* recommended action: immediate sleep/hibernate */ 3577 break; 3578 case TP_HKEY_EV_ALARM_SENSOR_HOT: 3579 printk(TPACPI_CRIT 3580 "THERMAL ALARM: " 3581 "a sensor reports something is too hot!\n"); 3582 /* recommended action: warn user through gui, that */ 3583 /* some internal component is too hot */ 3584 break; 3585 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 3586 printk(TPACPI_ALERT 3587 "THERMAL EMERGENCY: " 3588 "a sensor reports something is extremely hot!\n"); 3589 /* recommended action: immediate sleep/hibernate */ 3590 break; 3591 default: 3592 printk(TPACPI_ALERT 3593 "THERMAL ALERT: unknown thermal alarm received\n"); 3594 known = false; 3595 } 3596 3597 thermal_dump_all_sensors(); 3598 3599 return known; 3600} 3601 3602static void hotkey_notify(struct ibm_struct *ibm, u32 event) 3603{ 3604 u32 hkey; 3605 bool send_acpi_ev; 3606 bool ignore_acpi_ev; 3607 bool known_ev; 3608 3609 if (event != 0x80) { 3610 printk(TPACPI_ERR 3611 "unknown HKEY notification event %d\n", event); 3612 /* forward it to userspace, maybe it knows how to handle it */ 3613 acpi_bus_generate_netlink_event( 3614 ibm->acpi->device->pnp.device_class, 3615 dev_name(&ibm->acpi->device->dev), 3616 event, 0); 3617 return; 3618 } 3619 3620 while (1) { 3621 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 3622 printk(TPACPI_ERR "failed to retrieve HKEY event\n"); 3623 return; 3624 } 3625 3626 if (hkey == 0) { 3627 /* queue empty */ 3628 return; 3629 } 3630 3631 send_acpi_ev = true; 3632 ignore_acpi_ev = false; 3633 3634 switch (hkey >> 12) { 3635 case 1: 3636 /* 0x1000-0x1FFF: key presses */ 3637 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev, 3638 &ignore_acpi_ev); 3639 break; 3640 case 2: 3641 /* 0x2000-0x2FFF: Wakeup reason */ 3642 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev, 3643 &ignore_acpi_ev); 3644 break; 3645 case 3: 3646 /* 0x3000-0x3FFF: bay-related wakeups */ 3647 if (hkey == TP_HKEY_EV_BAYEJ_ACK) { 3648 hotkey_autosleep_ack = 1; 3649 printk(TPACPI_INFO 3650 "bay ejected\n"); 3651 hotkey_wakeup_hotunplug_complete_notify_change(); 3652 known_ev = true; 3653 } else { 3654 known_ev = false; 3655 } 3656 break; 3657 case 4: 3658 /* 0x4000-0x4FFF: dock-related wakeups */ 3659 if (hkey == TP_HKEY_EV_UNDOCK_ACK) { 3660 hotkey_autosleep_ack = 1; 3661 printk(TPACPI_INFO 3662 "undocked\n"); 3663 hotkey_wakeup_hotunplug_complete_notify_change(); 3664 known_ev = true; 3665 } else { 3666 known_ev = false; 3667 } 3668 break; 3669 case 5: 3670 /* 0x5000-0x5FFF: human interface helpers */ 3671 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev, 3672 &ignore_acpi_ev); 3673 break; 3674 case 6: 3675 /* 0x6000-0x6FFF: thermal alarms */ 3676 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev, 3677 &ignore_acpi_ev); 3678 break; 3679 case 7: 3680 /* 0x7000-0x7FFF: misc */ 3681 if (tp_features.hotkey_wlsw && 3682 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 3683 tpacpi_send_radiosw_update(); 3684 send_acpi_ev = 0; 3685 known_ev = true; 3686 break; 3687 } 3688 /* fallthrough to default */ 3689 default: 3690 known_ev = false; 3691 } 3692 if (!known_ev) { 3693 printk(TPACPI_NOTICE 3694 "unhandled HKEY event 0x%04x\n", hkey); 3695 printk(TPACPI_NOTICE 3696 "please report the conditions when this " 3697 "event happened to %s\n", TPACPI_MAIL); 3698 } 3699 3700 /* Legacy events */ 3701 if (!ignore_acpi_ev && 3702 (send_acpi_ev || hotkey_report_mode < 2)) { 3703 acpi_bus_generate_proc_event(ibm->acpi->device, 3704 event, hkey); 3705 } 3706 3707 /* netlink events */ 3708 if (!ignore_acpi_ev && send_acpi_ev) { 3709 acpi_bus_generate_netlink_event( 3710 ibm->acpi->device->pnp.device_class, 3711 dev_name(&ibm->acpi->device->dev), 3712 event, hkey); 3713 } 3714 } 3715} 3716 3717static void hotkey_suspend(pm_message_t state) 3718{ 3719 /* Do these on suspend, we get the events on early resume! */ 3720 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 3721 hotkey_autosleep_ack = 0; 3722} 3723 3724static void hotkey_resume(void) 3725{ 3726 tpacpi_disable_brightness_delay(); 3727 3728 if (hotkey_status_set(true) < 0 || 3729 hotkey_mask_set(hotkey_acpi_mask) < 0) 3730 printk(TPACPI_ERR 3731 "error while attempting to reset the event " 3732 "firmware interface\n"); 3733 3734 tpacpi_send_radiosw_update(); 3735 hotkey_tablet_mode_notify_change(); 3736 hotkey_wakeup_reason_notify_change(); 3737 hotkey_wakeup_hotunplug_complete_notify_change(); 3738 hotkey_poll_setup_safe(false); 3739} 3740 3741/* procfs -------------------------------------------------------------- */ 3742static int hotkey_read(char *p) 3743{ 3744 int res, status; 3745 int len = 0; 3746 3747 if (!tp_features.hotkey) { 3748 len += sprintf(p + len, "status:\t\tnot supported\n"); 3749 return len; 3750 } 3751 3752 if (mutex_lock_killable(&hotkey_mutex)) 3753 return -ERESTARTSYS; 3754 res = hotkey_status_get(&status); 3755 if (!res) 3756 res = hotkey_mask_get(); 3757 mutex_unlock(&hotkey_mutex); 3758 if (res) 3759 return res; 3760 3761 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0)); 3762 if (hotkey_all_mask) { 3763 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_user_mask); 3764 len += sprintf(p + len, 3765 "commands:\tenable, disable, reset, <mask>\n"); 3766 } else { 3767 len += sprintf(p + len, "mask:\t\tnot supported\n"); 3768 len += sprintf(p + len, "commands:\tenable, disable, reset\n"); 3769 } 3770 3771 return len; 3772} 3773 3774static void hotkey_enabledisable_warn(bool enable) 3775{ 3776 tpacpi_log_usertask("procfs hotkey enable/disable"); 3777 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 3778 TPACPI_WARN 3779 "hotkey enable/disable functionality has been " 3780 "removed from the driver. Hotkeys are always " 3781 "enabled\n")) 3782 printk(TPACPI_ERR 3783 "Please remove the hotkey=enable module " 3784 "parameter, it is deprecated. Hotkeys are always " 3785 "enabled\n"); 3786} 3787 3788static int hotkey_write(char *buf) 3789{ 3790 int res; 3791 u32 mask; 3792 char *cmd; 3793 3794 if (!tp_features.hotkey) 3795 return -ENODEV; 3796 3797 if (mutex_lock_killable(&hotkey_mutex)) 3798 return -ERESTARTSYS; 3799 3800 mask = hotkey_user_mask; 3801 3802 res = 0; 3803 while ((cmd = next_cmd(&buf))) { 3804 if (strlencmp(cmd, "enable") == 0) { 3805 hotkey_enabledisable_warn(1); 3806 } else if (strlencmp(cmd, "disable") == 0) { 3807 hotkey_enabledisable_warn(0); 3808 res = -EPERM; 3809 } else if (strlencmp(cmd, "reset") == 0) { 3810 mask = (hotkey_all_mask | hotkey_source_mask) 3811 & ~hotkey_reserved_mask; 3812 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 3813 /* mask set */ 3814 } else if (sscanf(cmd, "%x", &mask) == 1) { 3815 /* mask set */ 3816 } else { 3817 res = -EINVAL; 3818 goto errexit; 3819 } 3820 } 3821 3822 if (!res) { 3823 tpacpi_disclose_usertask("procfs hotkey", 3824 "set mask to 0x%08x\n", mask); 3825 res = hotkey_user_mask_set(mask); 3826 } 3827 3828errexit: 3829 mutex_unlock(&hotkey_mutex); 3830 return res; 3831} 3832 3833static const struct acpi_device_id ibm_htk_device_ids[] = { 3834 {TPACPI_ACPI_HKEY_HID, 0}, 3835 {"", 0}, 3836}; 3837 3838static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 3839 .hid = ibm_htk_device_ids, 3840 .notify = hotkey_notify, 3841 .handle = &hkey_handle, 3842 .type = ACPI_DEVICE_NOTIFY, 3843}; 3844 3845static struct ibm_struct hotkey_driver_data = { 3846 .name = "hotkey", 3847 .read = hotkey_read, 3848 .write = hotkey_write, 3849 .exit = hotkey_exit, 3850 .resume = hotkey_resume, 3851 .suspend = hotkey_suspend, 3852 .acpi = &ibm_hotkey_acpidriver, 3853}; 3854 3855/************************************************************************* 3856 * Bluetooth subdriver 3857 */ 3858 3859enum { 3860 /* ACPI GBDC/SBDC bits */ 3861 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 3862 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 3863 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 3864 off / last state */ 3865}; 3866 3867enum { 3868 /* ACPI \BLTH commands */ 3869 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 3870 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 3871 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 3872 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 3873 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 3874}; 3875 3876#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 3877 3878static int bluetooth_get_status(void) 3879{ 3880 int status; 3881 3882#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3883 if (dbg_bluetoothemul) 3884 return (tpacpi_bluetooth_emulstate) ? 3885 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 3886#endif 3887 3888 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 3889 return -EIO; 3890 3891 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 3892 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 3893} 3894 3895static int bluetooth_set_status(enum tpacpi_rfkill_state state) 3896{ 3897 int status; 3898 3899 vdbg_printk(TPACPI_DBG_RFKILL, 3900 "will attempt to %s bluetooth\n", 3901 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 3902 3903#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3904 if (dbg_bluetoothemul) { 3905 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 3906 return 0; 3907 } 3908#endif 3909 3910 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */ 3911 status = TP_ACPI_BLUETOOTH_RESUMECTRL; 3912 if (state == TPACPI_RFK_RADIO_ON) 3913 status |= TP_ACPI_BLUETOOTH_RADIOSSW; 3914 3915 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 3916 return -EIO; 3917 3918 return 0; 3919} 3920 3921/* sysfs bluetooth enable ---------------------------------------------- */ 3922static ssize_t bluetooth_enable_show(struct device *dev, 3923 struct device_attribute *attr, 3924 char *buf) 3925{ 3926 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 3927 attr, buf); 3928} 3929 3930static ssize_t bluetooth_enable_store(struct device *dev, 3931 struct device_attribute *attr, 3932 const char *buf, size_t count) 3933{ 3934 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 3935 attr, buf, count); 3936} 3937 3938static struct device_attribute dev_attr_bluetooth_enable = 3939 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO, 3940 bluetooth_enable_show, bluetooth_enable_store); 3941 3942/* --------------------------------------------------------------------- */ 3943 3944static struct attribute *bluetooth_attributes[] = { 3945 &dev_attr_bluetooth_enable.attr, 3946 NULL 3947}; 3948 3949static const struct attribute_group bluetooth_attr_group = { 3950 .attrs = bluetooth_attributes, 3951}; 3952 3953static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 3954 .get_status = bluetooth_get_status, 3955 .set_status = bluetooth_set_status, 3956}; 3957 3958static void bluetooth_shutdown(void) 3959{ 3960 /* Order firmware to save current state to NVRAM */ 3961 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 3962 TP_ACPI_BLTH_SAVE_STATE)) 3963 printk(TPACPI_NOTICE 3964 "failed to save bluetooth state to NVRAM\n"); 3965 else 3966 vdbg_printk(TPACPI_DBG_RFKILL, 3967 "bluestooth state saved to NVRAM\n"); 3968} 3969 3970static void bluetooth_exit(void) 3971{ 3972 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 3973 &bluetooth_attr_group); 3974 3975 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 3976 3977 bluetooth_shutdown(); 3978} 3979 3980static int __init bluetooth_init(struct ibm_init_struct *iibm) 3981{ 3982 int res; 3983 int status = 0; 3984 3985 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 3986 "initializing bluetooth subdriver\n"); 3987 3988 TPACPI_ACPIHANDLE_INIT(hkey); 3989 3990 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 3991 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 3992 tp_features.bluetooth = hkey_handle && 3993 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 3994 3995 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 3996 "bluetooth is %s, status 0x%02x\n", 3997 str_supported(tp_features.bluetooth), 3998 status); 3999 4000#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4001 if (dbg_bluetoothemul) { 4002 tp_features.bluetooth = 1; 4003 printk(TPACPI_INFO 4004 "bluetooth switch emulation enabled\n"); 4005 } else 4006#endif 4007 if (tp_features.bluetooth && 4008 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4009 /* no bluetooth hardware present in system */ 4010 tp_features.bluetooth = 0; 4011 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4012 "bluetooth hardware not installed\n"); 4013 } 4014 4015 if (!tp_features.bluetooth) 4016 return 1; 4017 4018 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4019 &bluetooth_tprfk_ops, 4020 RFKILL_TYPE_BLUETOOTH, 4021 TPACPI_RFK_BLUETOOTH_SW_NAME, 4022 true); 4023 if (res) 4024 return res; 4025 4026 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4027 &bluetooth_attr_group); 4028 if (res) { 4029 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4030 return res; 4031 } 4032 4033 return 0; 4034} 4035 4036/* procfs -------------------------------------------------------------- */ 4037static int bluetooth_read(char *p) 4038{ 4039 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, p); 4040} 4041 4042static int bluetooth_write(char *buf) 4043{ 4044 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4045} 4046 4047static struct ibm_struct bluetooth_driver_data = { 4048 .name = "bluetooth", 4049 .read = bluetooth_read, 4050 .write = bluetooth_write, 4051 .exit = bluetooth_exit, 4052 .shutdown = bluetooth_shutdown, 4053}; 4054 4055/************************************************************************* 4056 * Wan subdriver 4057 */ 4058 4059enum { 4060 /* ACPI GWAN/SWAN bits */ 4061 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4062 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4063 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4064 off / last state */ 4065}; 4066 4067#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4068 4069static int wan_get_status(void) 4070{ 4071 int status; 4072 4073#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4074 if (dbg_wwanemul) 4075 return (tpacpi_wwan_emulstate) ? 4076 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4077#endif 4078 4079 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4080 return -EIO; 4081 4082 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4083 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4084} 4085 4086static int wan_set_status(enum tpacpi_rfkill_state state) 4087{ 4088 int status; 4089 4090 vdbg_printk(TPACPI_DBG_RFKILL, 4091 "will attempt to %s wwan\n", 4092 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4093 4094#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4095 if (dbg_wwanemul) { 4096 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4097 return 0; 4098 } 4099#endif 4100 4101 /* We make sure to set TP_ACPI_WANCARD_RESUMECTRL */ 4102 status = TP_ACPI_WANCARD_RESUMECTRL; 4103 if (state == TPACPI_RFK_RADIO_ON) 4104 status |= TP_ACPI_WANCARD_RADIOSSW; 4105 4106 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4107 return -EIO; 4108 4109 return 0; 4110} 4111 4112/* sysfs wan enable ---------------------------------------------------- */ 4113static ssize_t wan_enable_show(struct device *dev, 4114 struct device_attribute *attr, 4115 char *buf) 4116{ 4117 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4118 attr, buf); 4119} 4120 4121static ssize_t wan_enable_store(struct device *dev, 4122 struct device_attribute *attr, 4123 const char *buf, size_t count) 4124{ 4125 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4126 attr, buf, count); 4127} 4128 4129static struct device_attribute dev_attr_wan_enable = 4130 __ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4131 wan_enable_show, wan_enable_store); 4132 4133/* --------------------------------------------------------------------- */ 4134 4135static struct attribute *wan_attributes[] = { 4136 &dev_attr_wan_enable.attr, 4137 NULL 4138}; 4139 4140static const struct attribute_group wan_attr_group = { 4141 .attrs = wan_attributes, 4142}; 4143 4144static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4145 .get_status = wan_get_status, 4146 .set_status = wan_set_status, 4147}; 4148 4149static void wan_shutdown(void) 4150{ 4151 /* Order firmware to save current state to NVRAM */ 4152 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4153 TP_ACPI_WGSV_SAVE_STATE)) 4154 printk(TPACPI_NOTICE 4155 "failed to save WWAN state to NVRAM\n"); 4156 else 4157 vdbg_printk(TPACPI_DBG_RFKILL, 4158 "WWAN state saved to NVRAM\n"); 4159} 4160 4161static void wan_exit(void) 4162{ 4163 sysfs_remove_group(&tpacpi_pdev->dev.kobj, 4164 &wan_attr_group); 4165 4166 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4167 4168 wan_shutdown(); 4169} 4170 4171static int __init wan_init(struct ibm_init_struct *iibm) 4172{ 4173 int res; 4174 int status = 0; 4175 4176 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4177 "initializing wan subdriver\n"); 4178 4179 TPACPI_ACPIHANDLE_INIT(hkey); 4180 4181 tp_features.wan = hkey_handle && 4182 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4183 4184 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4185 "wan is %s, status 0x%02x\n", 4186 str_supported(tp_features.wan), 4187 status); 4188 4189#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4190 if (dbg_wwanemul) { 4191 tp_features.wan = 1; 4192 printk(TPACPI_INFO 4193 "wwan switch emulation enabled\n"); 4194 } else 4195#endif 4196 if (tp_features.wan && 4197 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4198 /* no wan hardware present in system */ 4199 tp_features.wan = 0; 4200 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4201 "wan hardware not installed\n"); 4202 } 4203 4204 if (!tp_features.wan) 4205 return 1; 4206 4207 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4208 &wan_tprfk_ops, 4209 RFKILL_TYPE_WWAN, 4210 TPACPI_RFK_WWAN_SW_NAME, 4211 true); 4212 if (res) 4213 return res; 4214 4215 res = sysfs_create_group(&tpacpi_pdev->dev.kobj, 4216 &wan_attr_group); 4217 4218 if (res) { 4219 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4220 return res; 4221 } 4222 4223 return 0; 4224} 4225 4226/* procfs -------------------------------------------------------------- */ 4227static int wan_read(char *p) 4228{ 4229 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, p); 4230} 4231 4232static int wan_write(char *buf) 4233{ 4234 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4235} 4236 4237static struct ibm_struct wan_driver_data = { 4238 .name = "wan", 4239 .read = wan_read, 4240 .write = wan_write, 4241 .exit = wan_exit, 4242 .shutdown = wan_shutdown, 4243}; 4244 4245/************************************************************************* 4246 * UWB subdriver 4247 */ 4248 4249enum { 4250 /* ACPI GUWB/SUWB bits */ 4251 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4252 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4253}; 4254 4255#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4256 4257static int uwb_get_status(void) 4258{ 4259 int status; 4260 4261#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4262 if (dbg_uwbemul) 4263 return (tpacpi_uwb_emulstate) ? 4264 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4265#endif 4266 4267 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4268 return -EIO; 4269 4270 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4271 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4272} 4273 4274static int uwb_set_status(enum tpacpi_rfkill_state state) 4275{ 4276 int status; 4277 4278 vdbg_printk(TPACPI_DBG_RFKILL, 4279 "will attempt to %s UWB\n", 4280 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable"); 4281 4282#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4283 if (dbg_uwbemul) { 4284 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4285 return 0; 4286 } 4287#endif 4288 4289 if (state == TPACPI_RFK_RADIO_ON) 4290 status = TP_ACPI_UWB_RADIOSSW; 4291 else 4292 status = 0; 4293 4294 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4295 return -EIO; 4296 4297 return 0; 4298} 4299 4300/* --------------------------------------------------------------------- */ 4301 4302static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4303 .get_status = uwb_get_status, 4304 .set_status = uwb_set_status, 4305}; 4306 4307static void uwb_exit(void) 4308{ 4309 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4310} 4311 4312static int __init uwb_init(struct ibm_init_struct *iibm) 4313{ 4314 int res; 4315 int status = 0; 4316 4317 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4318 "initializing uwb subdriver\n"); 4319 4320 TPACPI_ACPIHANDLE_INIT(hkey); 4321 4322 tp_features.uwb = hkey_handle && 4323 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4324 4325 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4326 "uwb is %s, status 0x%02x\n", 4327 str_supported(tp_features.uwb), 4328 status); 4329 4330#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4331 if (dbg_uwbemul) { 4332 tp_features.uwb = 1; 4333 printk(TPACPI_INFO 4334 "uwb switch emulation enabled\n"); 4335 } else 4336#endif 4337 if (tp_features.uwb && 4338 !(status & TP_ACPI_UWB_HWPRESENT)) { 4339 /* no uwb hardware present in system */ 4340 tp_features.uwb = 0; 4341 dbg_printk(TPACPI_DBG_INIT, 4342 "uwb hardware not installed\n"); 4343 } 4344 4345 if (!tp_features.uwb) 4346 return 1; 4347 4348 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4349 &uwb_tprfk_ops, 4350 RFKILL_TYPE_UWB, 4351 TPACPI_RFK_UWB_SW_NAME, 4352 false); 4353 return res; 4354} 4355 4356static struct ibm_struct uwb_driver_data = { 4357 .name = "uwb", 4358 .exit = uwb_exit, 4359 .flags.experimental = 1, 4360}; 4361 4362/************************************************************************* 4363 * Video subdriver 4364 */ 4365 4366#ifdef CONFIG_THINKPAD_ACPI_VIDEO 4367 4368enum video_access_mode { 4369 TPACPI_VIDEO_NONE = 0, 4370 TPACPI_VIDEO_570, /* 570 */ 4371 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4372 TPACPI_VIDEO_NEW, /* all others */ 4373}; 4374 4375enum { /* video status flags, based on VIDEO_570 */ 4376 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4377 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4378 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4379}; 4380 4381enum { /* TPACPI_VIDEO_570 constants */ 4382 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4383 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4384 * video_status_flags */ 4385 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4386 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4387}; 4388 4389static enum video_access_mode video_supported; 4390static int video_orig_autosw; 4391 4392static int video_autosw_get(void); 4393static int video_autosw_set(int enable); 4394 4395TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4396 4397static int __init video_init(struct ibm_init_struct *iibm) 4398{ 4399 int ivga; 4400 4401 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4402 4403 TPACPI_ACPIHANDLE_INIT(vid); 4404 TPACPI_ACPIHANDLE_INIT(vid2); 4405 4406 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4407 /* G41, assume IVGA doesn't change */ 4408 vid_handle = vid2_handle; 4409 4410 if (!vid_handle) 4411 /* video switching not supported on R30, R31 */ 4412 video_supported = TPACPI_VIDEO_NONE; 4413 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4414 /* 570 */ 4415 video_supported = TPACPI_VIDEO_570; 4416 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4417 /* 600e/x, 770e, 770x */ 4418 video_supported = TPACPI_VIDEO_770; 4419 else 4420 /* all others */ 4421 video_supported = TPACPI_VIDEO_NEW; 4422 4423 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4424 str_supported(video_supported != TPACPI_VIDEO_NONE), 4425 video_supported); 4426 4427 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1; 4428} 4429 4430static void video_exit(void) 4431{ 4432 dbg_printk(TPACPI_DBG_EXIT, 4433 "restoring original video autoswitch mode\n"); 4434 if (video_autosw_set(video_orig_autosw)) 4435 printk(TPACPI_ERR "error while trying to restore original " 4436 "video autoswitch mode\n"); 4437} 4438 4439static int video_outputsw_get(void) 4440{ 4441 int status = 0; 4442 int i; 4443 4444 switch (video_supported) { 4445 case TPACPI_VIDEO_570: 4446 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 4447 TP_ACPI_VIDEO_570_PHSCMD)) 4448 return -EIO; 4449 status = i & TP_ACPI_VIDEO_570_PHSMASK; 4450 break; 4451 case TPACPI_VIDEO_770: 4452 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 4453 return -EIO; 4454 if (i) 4455 status |= TP_ACPI_VIDEO_S_LCD; 4456 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 4457 return -EIO; 4458 if (i) 4459 status |= TP_ACPI_VIDEO_S_CRT; 4460 break; 4461 case TPACPI_VIDEO_NEW: 4462 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 4463 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 4464 return -EIO; 4465 if (i) 4466 status |= TP_ACPI_VIDEO_S_CRT; 4467 4468 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 4469 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 4470 return -EIO; 4471 if (i) 4472 status |= TP_ACPI_VIDEO_S_LCD; 4473 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 4474 return -EIO; 4475 if (i) 4476 status |= TP_ACPI_VIDEO_S_DVI; 4477 break; 4478 default: 4479 return -ENOSYS; 4480 } 4481 4482 return status; 4483} 4484 4485static int video_outputsw_set(int status) 4486{ 4487 int autosw; 4488 int res = 0; 4489 4490 switch (video_supported) { 4491 case TPACPI_VIDEO_570: 4492 res = acpi_evalf(NULL, NULL, 4493 "\\_SB.PHS2", "vdd", 4494 TP_ACPI_VIDEO_570_PHS2CMD, 4495 status | TP_ACPI_VIDEO_570_PHS2SET); 4496 break; 4497 case TPACPI_VIDEO_770: 4498 autosw = video_autosw_get(); 4499 if (autosw < 0) 4500 return autosw; 4501 4502 res = video_autosw_set(1); 4503 if (res) 4504 return res; 4505 res = acpi_evalf(vid_handle, NULL, 4506 "ASWT", "vdd", status * 0x100, 0); 4507 if (!autosw && video_autosw_set(autosw)) { 4508 printk(TPACPI_ERR 4509 "video auto-switch left enabled due to error\n"); 4510 return -EIO; 4511 } 4512 break; 4513 case TPACPI_VIDEO_NEW: 4514 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 4515 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 4516 break; 4517 default: 4518 return -ENOSYS; 4519 } 4520 4521 return (res)? 0 : -EIO; 4522} 4523 4524static int video_autosw_get(void) 4525{ 4526 int autosw = 0; 4527 4528 switch (video_supported) { 4529 case TPACPI_VIDEO_570: 4530 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 4531 return -EIO; 4532 break; 4533 case TPACPI_VIDEO_770: 4534 case TPACPI_VIDEO_NEW: 4535 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 4536 return -EIO; 4537 break; 4538 default: 4539 return -ENOSYS; 4540 } 4541 4542 return autosw & 1; 4543} 4544 4545static int video_autosw_set(int enable) 4546{ 4547 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0)) 4548 return -EIO; 4549 return 0; 4550} 4551 4552static int video_outputsw_cycle(void) 4553{ 4554 int autosw = video_autosw_get(); 4555 int res; 4556 4557 if (autosw < 0) 4558 return autosw; 4559 4560 switch (video_supported) { 4561 case TPACPI_VIDEO_570: 4562 res = video_autosw_set(1); 4563 if (res) 4564 return res; 4565 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 4566 break; 4567 case TPACPI_VIDEO_770: 4568 case TPACPI_VIDEO_NEW: 4569 res = video_autosw_set(1); 4570 if (res) 4571 return res; 4572 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 4573 break; 4574 default: 4575 return -ENOSYS; 4576 } 4577 if (!autosw && video_autosw_set(autosw)) { 4578 printk(TPACPI_ERR 4579 "video auto-switch left enabled due to error\n"); 4580 return -EIO; 4581 } 4582 4583 return (res)? 0 : -EIO; 4584} 4585 4586static int video_expand_toggle(void) 4587{ 4588 switch (video_supported) { 4589 case TPACPI_VIDEO_570: 4590 return acpi_evalf(ec_handle, NULL, "_Q17", "v")? 4591 0 : -EIO; 4592 case TPACPI_VIDEO_770: 4593 return acpi_evalf(vid_handle, NULL, "VEXP", "v")? 4594 0 : -EIO; 4595 case TPACPI_VIDEO_NEW: 4596 return acpi_evalf(NULL, NULL, "\\VEXP", "v")? 4597 0 : -EIO; 4598 default: 4599 return -ENOSYS; 4600 } 4601 /* not reached */ 4602} 4603 4604static int video_read(char *p) 4605{ 4606 int status, autosw; 4607 int len = 0; 4608 4609 if (video_supported == TPACPI_VIDEO_NONE) { 4610 len += sprintf(p + len, "status:\t\tnot supported\n"); 4611 return len; 4612 } 4613 4614 status = video_outputsw_get(); 4615 if (status < 0) 4616 return status; 4617 4618 autosw = video_autosw_get(); 4619 if (autosw < 0) 4620 return autosw; 4621 4622 len += sprintf(p + len, "status:\t\tsupported\n"); 4623 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0)); 4624 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1)); 4625 if (video_supported == TPACPI_VIDEO_NEW) 4626 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3)); 4627 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0)); 4628 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n"); 4629 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n"); 4630 if (video_supported == TPACPI_VIDEO_NEW) 4631 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n"); 4632 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n"); 4633 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n"); 4634 4635 return len; 4636} 4637 4638static int video_write(char *buf) 4639{ 4640 char *cmd; 4641 int enable, disable, status; 4642 int res; 4643 4644 if (video_supported == TPACPI_VIDEO_NONE) 4645 return -ENODEV; 4646 4647 enable = 0; 4648 disable = 0; 4649 4650 while ((cmd = next_cmd(&buf))) { 4651 if (strlencmp(cmd, "lcd_enable") == 0) { 4652 enable |= TP_ACPI_VIDEO_S_LCD; 4653 } else if (strlencmp(cmd, "lcd_disable") == 0) { 4654 disable |= TP_ACPI_VIDEO_S_LCD; 4655 } else if (strlencmp(cmd, "crt_enable") == 0) { 4656 enable |= TP_ACPI_VIDEO_S_CRT; 4657 } else if (strlencmp(cmd, "crt_disable") == 0) { 4658 disable |= TP_ACPI_VIDEO_S_CRT; 4659 } else if (video_supported == TPACPI_VIDEO_NEW && 4660 strlencmp(cmd, "dvi_enable") == 0) { 4661 enable |= TP_ACPI_VIDEO_S_DVI; 4662 } else if (video_supported == TPACPI_VIDEO_NEW && 4663 strlencmp(cmd, "dvi_disable") == 0) { 4664 disable |= TP_ACPI_VIDEO_S_DVI; 4665 } else if (strlencmp(cmd, "auto_enable") == 0) { 4666 res = video_autosw_set(1); 4667 if (res) 4668 return res; 4669 } else if (strlencmp(cmd, "auto_disable") == 0) { 4670 res = video_autosw_set(0); 4671 if (res) 4672 return res; 4673 } else if (strlencmp(cmd, "video_switch") == 0) { 4674 res = video_outputsw_cycle(); 4675 if (res) 4676 return res; 4677 } else if (strlencmp(cmd, "expand_toggle") == 0) { 4678 res = video_expand_toggle(); 4679 if (res) 4680 return res; 4681 } else 4682 return -EINVAL; 4683 } 4684 4685 if (enable || disable) { 4686 status = video_outputsw_get(); 4687 if (status < 0) 4688 return status; 4689 res = video_outputsw_set((status & ~disable) | enable); 4690 if (res) 4691 return res; 4692 } 4693 4694 return 0; 4695} 4696 4697static struct ibm_struct video_driver_data = { 4698 .name = "video", 4699 .read = video_read, 4700 .write = video_write, 4701 .exit = video_exit, 4702}; 4703 4704#endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 4705 4706/************************************************************************* 4707 * Light (thinklight) subdriver 4708 */ 4709 4710TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 4711TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 4712 4713static int light_get_status(void) 4714{ 4715 int status = 0; 4716 4717 if (tp_features.light_status) { 4718 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 4719 return -EIO; 4720 return (!!status); 4721 } 4722 4723 return -ENXIO; 4724} 4725 4726static int light_set_status(int status) 4727{ 4728 int rc; 4729 4730 if (tp_features.light) { 4731 if (cmos_handle) { 4732 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 4733 (status)? 4734 TP_CMOS_THINKLIGHT_ON : 4735 TP_CMOS_THINKLIGHT_OFF); 4736 } else { 4737 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 4738 (status)? 1 : 0); 4739 } 4740 return (rc)? 0 : -EIO; 4741 } 4742 4743 return -ENXIO; 4744} 4745 4746static void light_set_status_worker(struct work_struct *work) 4747{ 4748 struct tpacpi_led_classdev *data = 4749 container_of(work, struct tpacpi_led_classdev, work); 4750 4751 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) 4752 light_set_status((data->new_state != TPACPI_LED_OFF)); 4753} 4754 4755static void light_sysfs_set(struct led_classdev *led_cdev, 4756 enum led_brightness brightness) 4757{ 4758 struct tpacpi_led_classdev *data = 4759 container_of(led_cdev, 4760 struct tpacpi_led_classdev, 4761 led_classdev); 4762 data->new_state = (brightness != LED_OFF) ? 4763 TPACPI_LED_ON : TPACPI_LED_OFF; 4764 queue_work(tpacpi_wq, &data->work); 4765} 4766 4767static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 4768{ 4769 return (light_get_status() == 1)? LED_FULL : LED_OFF; 4770} 4771 4772static struct tpacpi_led_classdev tpacpi_led_thinklight = { 4773 .led_classdev = { 4774 .name = "tpacpi::thinklight", 4775 .brightness_set = &light_sysfs_set, 4776 .brightness_get = &light_sysfs_get, 4777 } 4778}; 4779 4780static int __init light_init(struct ibm_init_struct *iibm) 4781{ 4782 int rc; 4783 4784 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 4785 4786 TPACPI_ACPIHANDLE_INIT(ledb); 4787 TPACPI_ACPIHANDLE_INIT(lght); 4788 TPACPI_ACPIHANDLE_INIT(cmos); 4789 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker); 4790 4791 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 4792 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 4793 4794 if (tp_features.light) 4795 /* light status not supported on 4796 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 4797 tp_features.light_status = 4798 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 4799 4800 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 4801 str_supported(tp_features.light), 4802 str_supported(tp_features.light_status)); 4803 4804 if (!tp_features.light) 4805 return 1; 4806 4807 rc = led_classdev_register(&tpacpi_pdev->dev, 4808 &tpacpi_led_thinklight.led_classdev); 4809 4810 if (rc < 0) { 4811 tp_features.light = 0; 4812 tp_features.light_status = 0; 4813 } else { 4814 rc = 0; 4815 } 4816 4817 return rc; 4818} 4819 4820static void light_exit(void) 4821{ 4822 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 4823 if (work_pending(&tpacpi_led_thinklight.work)) 4824 flush_workqueue(tpacpi_wq); 4825} 4826 4827static int light_read(char *p) 4828{ 4829 int len = 0; 4830 int status; 4831 4832 if (!tp_features.light) { 4833 len += sprintf(p + len, "status:\t\tnot supported\n"); 4834 } else if (!tp_features.light_status) { 4835 len += sprintf(p + len, "status:\t\tunknown\n"); 4836 len += sprintf(p + len, "commands:\ton, off\n"); 4837 } else { 4838 status = light_get_status(); 4839 if (status < 0) 4840 return status; 4841 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0)); 4842 len += sprintf(p + len, "commands:\ton, off\n"); 4843 } 4844 4845 return len; 4846} 4847 4848static int light_write(char *buf) 4849{ 4850 char *cmd; 4851 int newstatus = 0; 4852 4853 if (!tp_features.light) 4854 return -ENODEV; 4855 4856 while ((cmd = next_cmd(&buf))) { 4857 if (strlencmp(cmd, "on") == 0) { 4858 newstatus = 1; 4859 } else if (strlencmp(cmd, "off") == 0) { 4860 newstatus = 0; 4861 } else 4862 return -EINVAL; 4863 } 4864 4865 return light_set_status(newstatus); 4866} 4867 4868static struct ibm_struct light_driver_data = { 4869 .name = "light", 4870 .read = light_read, 4871 .write = light_write, 4872 .exit = light_exit, 4873}; 4874 4875/************************************************************************* 4876 * CMOS subdriver 4877 */ 4878 4879/* sysfs cmos_command -------------------------------------------------- */ 4880static ssize_t cmos_command_store(struct device *dev, 4881 struct device_attribute *attr, 4882 const char *buf, size_t count) 4883{ 4884 unsigned long cmos_cmd; 4885 int res; 4886 4887 if (parse_strtoul(buf, 21, &cmos_cmd)) 4888 return -EINVAL; 4889 4890 res = issue_thinkpad_cmos_command(cmos_cmd); 4891 return (res)? res : count; 4892} 4893 4894static struct device_attribute dev_attr_cmos_command = 4895 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store); 4896 4897/* --------------------------------------------------------------------- */ 4898 4899static int __init cmos_init(struct ibm_init_struct *iibm) 4900{ 4901 int res; 4902 4903 vdbg_printk(TPACPI_DBG_INIT, 4904 "initializing cmos commands subdriver\n"); 4905 4906 TPACPI_ACPIHANDLE_INIT(cmos); 4907 4908 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 4909 str_supported(cmos_handle != NULL)); 4910 4911 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 4912 if (res) 4913 return res; 4914 4915 return (cmos_handle)? 0 : 1; 4916} 4917 4918static void cmos_exit(void) 4919{ 4920 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); 4921} 4922 4923static int cmos_read(char *p) 4924{ 4925 int len = 0; 4926 4927 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4928 R30, R31, T20-22, X20-21 */ 4929 if (!cmos_handle) 4930 len += sprintf(p + len, "status:\t\tnot supported\n"); 4931 else { 4932 len += sprintf(p + len, "status:\t\tsupported\n"); 4933 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n"); 4934 } 4935 4936 return len; 4937} 4938 4939static int cmos_write(char *buf) 4940{ 4941 char *cmd; 4942 int cmos_cmd, res; 4943 4944 while ((cmd = next_cmd(&buf))) { 4945 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 4946 cmos_cmd >= 0 && cmos_cmd <= 21) { 4947 /* cmos_cmd set */ 4948 } else 4949 return -EINVAL; 4950 4951 res = issue_thinkpad_cmos_command(cmos_cmd); 4952 if (res) 4953 return res; 4954 } 4955 4956 return 0; 4957} 4958 4959static struct ibm_struct cmos_driver_data = { 4960 .name = "cmos", 4961 .read = cmos_read, 4962 .write = cmos_write, 4963 .exit = cmos_exit, 4964}; 4965 4966/************************************************************************* 4967 * LED subdriver 4968 */ 4969 4970enum led_access_mode { 4971 TPACPI_LED_NONE = 0, 4972 TPACPI_LED_570, /* 570 */ 4973 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 4974 TPACPI_LED_NEW, /* all others */ 4975}; 4976 4977enum { /* For TPACPI_LED_OLD */ 4978 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 4979 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 4980 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 4981}; 4982 4983static enum led_access_mode led_supported; 4984 4985TPACPI_HANDLE(led, ec, "SLED", /* 570 */ 4986 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */ 4987 /* T20-22, X20-21 */ 4988 "LED", /* all others */ 4989 ); /* R30, R31 */ 4990 4991#define TPACPI_LED_NUMLEDS 16 4992static struct tpacpi_led_classdev *tpacpi_leds; 4993static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 4994static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 4995 /* there's a limit of 19 chars + NULL before 2.6.26 */ 4996 "tpacpi::power", 4997 "tpacpi:orange:batt", 4998 "tpacpi:green:batt", 4999 "tpacpi::dock_active", 5000 "tpacpi::bay_active", 5001 "tpacpi::dock_batt", 5002 "tpacpi::unknown_led", 5003 "tpacpi::standby", 5004 "tpacpi::dock_status1", 5005 "tpacpi::dock_status2", 5006 "tpacpi::unknown_led2", 5007 "tpacpi::unknown_led3", 5008 "tpacpi::thinkvantage", 5009}; 5010#define TPACPI_SAFE_LEDS 0x1081U 5011 5012static inline bool tpacpi_is_led_restricted(const unsigned int led) 5013{ 5014#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5015 return false; 5016#else 5017 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5018#endif 5019} 5020 5021static int led_get_status(const unsigned int led) 5022{ 5023 int status; 5024 enum led_status_t led_s; 5025 5026 switch (led_supported) { 5027 case TPACPI_LED_570: 5028 if (!acpi_evalf(ec_handle, 5029 &status, "GLED", "dd", 1 << led)) 5030 return -EIO; 5031 led_s = (status == 0)? 5032 TPACPI_LED_OFF : 5033 ((status == 1)? 5034 TPACPI_LED_ON : 5035 TPACPI_LED_BLINK); 5036 tpacpi_led_state_cache[led] = led_s; 5037 return led_s; 5038 default: 5039 return -ENXIO; 5040 } 5041 5042 /* not reached */ 5043} 5044 5045static int led_set_status(const unsigned int led, 5046 const enum led_status_t ledstatus) 5047{ 5048 /* off, on, blink. Index is led_status_t */ 5049 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5050 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5051 5052 int rc = 0; 5053 5054 switch (led_supported) { 5055 case TPACPI_LED_570: 5056 /* 570 */ 5057 if (unlikely(led > 7)) 5058 return -EINVAL; 5059 if (unlikely(tpacpi_is_led_restricted(led))) 5060 return -EPERM; 5061 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5062 (1 << led), led_sled_arg1[ledstatus])) 5063 rc = -EIO; 5064 break; 5065 case TPACPI_LED_OLD: 5066 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5067 if (unlikely(led > 7)) 5068 return -EINVAL; 5069 if (unlikely(tpacpi_is_led_restricted(led))) 5070 return -EPERM; 5071 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5072 if (rc >= 0) 5073 rc = ec_write(TPACPI_LED_EC_HLBL, 5074 (ledstatus == TPACPI_LED_BLINK) << led); 5075 if (rc >= 0) 5076 rc = ec_write(TPACPI_LED_EC_HLCL, 5077 (ledstatus != TPACPI_LED_OFF) << led); 5078 break; 5079 case TPACPI_LED_NEW: 5080 /* all others */ 5081 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5082 return -EINVAL; 5083 if (unlikely(tpacpi_is_led_restricted(led))) 5084 return -EPERM; 5085 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5086 led, led_led_arg1[ledstatus])) 5087 rc = -EIO; 5088 break; 5089 default: 5090 rc = -ENXIO; 5091 } 5092 5093 if (!rc) 5094 tpacpi_led_state_cache[led] = ledstatus; 5095 5096 return rc; 5097} 5098 5099static void led_set_status_worker(struct work_struct *work) 5100{ 5101 struct tpacpi_led_classdev *data = 5102 container_of(work, struct tpacpi_led_classdev, work); 5103 5104 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) 5105 led_set_status(data->led, data->new_state); 5106} 5107 5108static void led_sysfs_set(struct led_classdev *led_cdev, 5109 enum led_brightness brightness) 5110{ 5111 struct tpacpi_led_classdev *data = container_of(led_cdev, 5112 struct tpacpi_led_classdev, led_classdev); 5113 5114 if (brightness == LED_OFF) 5115 data->new_state = TPACPI_LED_OFF; 5116 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5117 data->new_state = TPACPI_LED_ON; 5118 else 5119 data->new_state = TPACPI_LED_BLINK; 5120 5121 queue_work(tpacpi_wq, &data->work); 5122} 5123 5124static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5125 unsigned long *delay_on, unsigned long *delay_off) 5126{ 5127 struct tpacpi_led_classdev *data = container_of(led_cdev, 5128 struct tpacpi_led_classdev, led_classdev); 5129 5130 /* Can we choose the flash rate? */ 5131 if (*delay_on == 0 && *delay_off == 0) { 5132 /* yes. set them to the hardware blink rate (1 Hz) */ 5133 *delay_on = 500; /* ms */ 5134 *delay_off = 500; /* ms */ 5135 } else if ((*delay_on != 500) || (*delay_off != 500)) 5136 return -EINVAL; 5137 5138 data->new_state = TPACPI_LED_BLINK; 5139 queue_work(tpacpi_wq, &data->work); 5140 5141 return 0; 5142} 5143 5144static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5145{ 5146 int rc; 5147 5148 struct tpacpi_led_classdev *data = container_of(led_cdev, 5149 struct tpacpi_led_classdev, led_classdev); 5150 5151 rc = led_get_status(data->led); 5152 5153 if (rc == TPACPI_LED_OFF || rc < 0) 5154 rc = LED_OFF; /* no error handling in led class :( */ 5155 else 5156 rc = LED_FULL; 5157 5158 return rc; 5159} 5160 5161static void led_exit(void) 5162{ 5163 unsigned int i; 5164 5165 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 5166 if (tpacpi_leds[i].led_classdev.name) 5167 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5168 } 5169 5170 kfree(tpacpi_leds); 5171} 5172 5173static int __init tpacpi_init_led(unsigned int led) 5174{ 5175 int rc; 5176 5177 tpacpi_leds[led].led = led; 5178 5179 /* LEDs with no name don't get registered */ 5180 if (!tpacpi_led_names[led]) 5181 return 0; 5182 5183 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set; 5184 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5185 if (led_supported == TPACPI_LED_570) 5186 tpacpi_leds[led].led_classdev.brightness_get = 5187 &led_sysfs_get; 5188 5189 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5190 5191 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker); 5192 5193 rc = led_classdev_register(&tpacpi_pdev->dev, 5194 &tpacpi_leds[led].led_classdev); 5195 if (rc < 0) 5196 tpacpi_leds[led].led_classdev.name = NULL; 5197 5198 return rc; 5199} 5200 5201static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5202 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5203 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5204 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5205 5206 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5207 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5208 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5209 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5210 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5211 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5212 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5213 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5214 5215 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5216 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5217 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5218 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5219 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5220 5221 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5222 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5223 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5224 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5225 5226 /* (1) - may have excess leds enabled on MSB */ 5227 5228 /* Defaults (order matters, keep last, don't reorder!) */ 5229 { /* Lenovo */ 5230 .vendor = PCI_VENDOR_ID_LENOVO, 5231 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5232 .quirks = 0x1fffU, 5233 }, 5234 { /* IBM ThinkPads with no EC version string */ 5235 .vendor = PCI_VENDOR_ID_IBM, 5236 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 5237 .quirks = 0x00ffU, 5238 }, 5239 { /* IBM ThinkPads with EC version string */ 5240 .vendor = PCI_VENDOR_ID_IBM, 5241 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5242 .quirks = 0x00bfU, 5243 }, 5244}; 5245 5246#undef TPACPI_LEDQ_IBM 5247#undef TPACPI_LEDQ_LNV 5248 5249static int __init led_init(struct ibm_init_struct *iibm) 5250{ 5251 unsigned int i; 5252 int rc; 5253 unsigned long useful_leds; 5254 5255 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 5256 5257 TPACPI_ACPIHANDLE_INIT(led); 5258 5259 if (!led_handle) 5260 /* led not supported on R30, R31 */ 5261 led_supported = TPACPI_LED_NONE; 5262 else if (strlencmp(led_path, "SLED") == 0) 5263 /* 570 */ 5264 led_supported = TPACPI_LED_570; 5265 else if (strlencmp(led_path, "SYSL") == 0) 5266 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5267 led_supported = TPACPI_LED_OLD; 5268 else 5269 /* all others */ 5270 led_supported = TPACPI_LED_NEW; 5271 5272 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 5273 str_supported(led_supported), led_supported); 5274 5275 if (led_supported == TPACPI_LED_NONE) 5276 return 1; 5277 5278 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS, 5279 GFP_KERNEL); 5280 if (!tpacpi_leds) { 5281 printk(TPACPI_ERR "Out of memory for LED data\n"); 5282 return -ENOMEM; 5283 } 5284 5285 useful_leds = tpacpi_check_quirks(led_useful_qtable, 5286 ARRAY_SIZE(led_useful_qtable)); 5287 5288 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 5289 if (!tpacpi_is_led_restricted(i) && 5290 test_bit(i, &useful_leds)) { 5291 rc = tpacpi_init_led(i); 5292 if (rc < 0) { 5293 led_exit(); 5294 return rc; 5295 } 5296 } 5297 } 5298 5299#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5300 printk(TPACPI_NOTICE 5301 "warning: userspace override of important " 5302 "firmware LEDs is enabled\n"); 5303#endif 5304 return 0; 5305} 5306 5307#define str_led_status(s) \ 5308 ((s) == TPACPI_LED_OFF ? "off" : \ 5309 ((s) == TPACPI_LED_ON ? "on" : "blinking")) 5310 5311static int led_read(char *p) 5312{ 5313 int len = 0; 5314 5315 if (!led_supported) { 5316 len += sprintf(p + len, "status:\t\tnot supported\n"); 5317 return len; 5318 } 5319 len += sprintf(p + len, "status:\t\tsupported\n"); 5320 5321 if (led_supported == TPACPI_LED_570) { 5322 /* 570 */ 5323 int i, status; 5324 for (i = 0; i < 8; i++) { 5325 status = led_get_status(i); 5326 if (status < 0) 5327 return -EIO; 5328 len += sprintf(p + len, "%d:\t\t%s\n", 5329 i, str_led_status(status)); 5330 } 5331 } 5332 5333 len += sprintf(p + len, "commands:\t" 5334 "<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 5335 5336 return len; 5337} 5338 5339static int led_write(char *buf) 5340{ 5341 char *cmd; 5342 int led, rc; 5343 enum led_status_t s; 5344 5345 if (!led_supported) 5346 return -ENODEV; 5347 5348 while ((cmd = next_cmd(&buf))) { 5349 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15) 5350 return -EINVAL; 5351 5352 if (strstr(cmd, "off")) { 5353 s = TPACPI_LED_OFF; 5354 } else if (strstr(cmd, "on")) { 5355 s = TPACPI_LED_ON; 5356 } else if (strstr(cmd, "blink")) { 5357 s = TPACPI_LED_BLINK; 5358 } else { 5359 return -EINVAL; 5360 } 5361 5362 rc = led_set_status(led, s); 5363 if (rc < 0) 5364 return rc; 5365 } 5366 5367 return 0; 5368} 5369 5370static struct ibm_struct led_driver_data = { 5371 .name = "led", 5372 .read = led_read, 5373 .write = led_write, 5374 .exit = led_exit, 5375}; 5376 5377/************************************************************************* 5378 * Beep subdriver 5379 */ 5380 5381TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 5382 5383#define TPACPI_BEEP_Q1 0x0001 5384 5385static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 5386 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 5387 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 5388}; 5389 5390static int __init beep_init(struct ibm_init_struct *iibm) 5391{ 5392 unsigned long quirks; 5393 5394 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 5395 5396 TPACPI_ACPIHANDLE_INIT(beep); 5397 5398 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 5399 str_supported(beep_handle != NULL)); 5400 5401 quirks = tpacpi_check_quirks(beep_quirk_table, 5402 ARRAY_SIZE(beep_quirk_table)); 5403 5404 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 5405 5406 return (beep_handle)? 0 : 1; 5407} 5408 5409static int beep_read(char *p) 5410{ 5411 int len = 0; 5412 5413 if (!beep_handle) 5414 len += sprintf(p + len, "status:\t\tnot supported\n"); 5415 else { 5416 len += sprintf(p + len, "status:\t\tsupported\n"); 5417 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n"); 5418 } 5419 5420 return len; 5421} 5422 5423static int beep_write(char *buf) 5424{ 5425 char *cmd; 5426 int beep_cmd; 5427 5428 if (!beep_handle) 5429 return -ENODEV; 5430 5431 while ((cmd = next_cmd(&buf))) { 5432 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 5433 beep_cmd >= 0 && beep_cmd <= 17) { 5434 /* beep_cmd set */ 5435 } else 5436 return -EINVAL; 5437 if (tp_features.beep_needs_two_args) { 5438 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 5439 beep_cmd, 0)) 5440 return -EIO; 5441 } else { 5442 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 5443 beep_cmd)) 5444 return -EIO; 5445 } 5446 } 5447 5448 return 0; 5449} 5450 5451static struct ibm_struct beep_driver_data = { 5452 .name = "beep", 5453 .read = beep_read, 5454 .write = beep_write, 5455}; 5456 5457/************************************************************************* 5458 * Thermal subdriver 5459 */ 5460 5461enum thermal_access_mode { 5462 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 5463 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 5464 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 5465 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 5466 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 5467}; 5468 5469enum { /* TPACPI_THERMAL_TPEC_* */ 5470 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 5471 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 5472 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 5473 5474 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 5475}; 5476 5477 5478#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 5479struct ibm_thermal_sensors_struct { 5480 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 5481}; 5482 5483static enum thermal_access_mode thermal_read_mode; 5484 5485/* idx is zero-based */ 5486static int thermal_get_sensor(int idx, s32 *value) 5487{ 5488 int t; 5489 s8 tmp; 5490 char tmpi[5]; 5491 5492 t = TP_EC_THERMAL_TMP0; 5493 5494 switch (thermal_read_mode) { 5495#if TPACPI_MAX_THERMAL_SENSORS >= 16 5496 case TPACPI_THERMAL_TPEC_16: 5497 if (idx >= 8 && idx <= 15) { 5498 t = TP_EC_THERMAL_TMP8; 5499 idx -= 8; 5500 } 5501 /* fallthrough */ 5502#endif 5503 case TPACPI_THERMAL_TPEC_8: 5504 if (idx <= 7) { 5505 if (!acpi_ec_read(t + idx, &tmp)) 5506 return -EIO; 5507 *value = tmp * 1000; 5508 return 0; 5509 } 5510 break; 5511 5512 case TPACPI_THERMAL_ACPI_UPDT: 5513 if (idx <= 7) { 5514 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 5515 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 5516 return -EIO; 5517 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 5518 return -EIO; 5519 *value = (t - 2732) * 100; 5520 return 0; 5521 } 5522 break; 5523 5524 case TPACPI_THERMAL_ACPI_TMP07: 5525 if (idx <= 7) { 5526 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 5527 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 5528 return -EIO; 5529 if (t > 127 || t < -127) 5530 t = TP_EC_THERMAL_TMP_NA; 5531 *value = t * 1000; 5532 return 0; 5533 } 5534 break; 5535 5536 case TPACPI_THERMAL_NONE: 5537 default: 5538 return -ENOSYS; 5539 } 5540 5541 return -EINVAL; 5542} 5543 5544static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 5545{ 5546 int res, i; 5547 int n; 5548 5549 n = 8; 5550 i = 0; 5551 5552 if (!s) 5553 return -EINVAL; 5554 5555 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 5556 n = 16; 5557 5558 for (i = 0 ; i < n; i++) { 5559 res = thermal_get_sensor(i, &s->temp[i]); 5560 if (res) 5561 return res; 5562 } 5563 5564 return n; 5565} 5566 5567static void thermal_dump_all_sensors(void) 5568{ 5569 int n, i; 5570 struct ibm_thermal_sensors_struct t; 5571 5572 n = thermal_get_sensors(&t); 5573 if (n <= 0) 5574 return; 5575 5576 printk(TPACPI_NOTICE 5577 "temperatures (Celsius):"); 5578 5579 for (i = 0; i < n; i++) { 5580 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 5581 printk(KERN_CONT " %d", (int)(t.temp[i] / 1000)); 5582 else 5583 printk(KERN_CONT " N/A"); 5584 } 5585 5586 printk(KERN_CONT "\n"); 5587} 5588 5589/* sysfs temp##_input -------------------------------------------------- */ 5590 5591static ssize_t thermal_temp_input_show(struct device *dev, 5592 struct device_attribute *attr, 5593 char *buf) 5594{ 5595 struct sensor_device_attribute *sensor_attr = 5596 to_sensor_dev_attr(attr); 5597 int idx = sensor_attr->index; 5598 s32 value; 5599 int res; 5600 5601 res = thermal_get_sensor(idx, &value); 5602 if (res) 5603 return res; 5604 if (value == TPACPI_THERMAL_SENSOR_NA) 5605 return -ENXIO; 5606 5607 return snprintf(buf, PAGE_SIZE, "%d\n", value); 5608} 5609 5610#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 5611 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 5612 thermal_temp_input_show, NULL, _idxB) 5613 5614static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 5615 THERMAL_SENSOR_ATTR_TEMP(1, 0), 5616 THERMAL_SENSOR_ATTR_TEMP(2, 1), 5617 THERMAL_SENSOR_ATTR_TEMP(3, 2), 5618 THERMAL_SENSOR_ATTR_TEMP(4, 3), 5619 THERMAL_SENSOR_ATTR_TEMP(5, 4), 5620 THERMAL_SENSOR_ATTR_TEMP(6, 5), 5621 THERMAL_SENSOR_ATTR_TEMP(7, 6), 5622 THERMAL_SENSOR_ATTR_TEMP(8, 7), 5623 THERMAL_SENSOR_ATTR_TEMP(9, 8), 5624 THERMAL_SENSOR_ATTR_TEMP(10, 9), 5625 THERMAL_SENSOR_ATTR_TEMP(11, 10), 5626 THERMAL_SENSOR_ATTR_TEMP(12, 11), 5627 THERMAL_SENSOR_ATTR_TEMP(13, 12), 5628 THERMAL_SENSOR_ATTR_TEMP(14, 13), 5629 THERMAL_SENSOR_ATTR_TEMP(15, 14), 5630 THERMAL_SENSOR_ATTR_TEMP(16, 15), 5631}; 5632 5633#define THERMAL_ATTRS(X) \ 5634 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 5635 5636static struct attribute *thermal_temp_input_attr[] = { 5637 THERMAL_ATTRS(8), 5638 THERMAL_ATTRS(9), 5639 THERMAL_ATTRS(10), 5640 THERMAL_ATTRS(11), 5641 THERMAL_ATTRS(12), 5642 THERMAL_ATTRS(13), 5643 THERMAL_ATTRS(14), 5644 THERMAL_ATTRS(15), 5645 THERMAL_ATTRS(0), 5646 THERMAL_ATTRS(1), 5647 THERMAL_ATTRS(2), 5648 THERMAL_ATTRS(3), 5649 THERMAL_ATTRS(4), 5650 THERMAL_ATTRS(5), 5651 THERMAL_ATTRS(6), 5652 THERMAL_ATTRS(7), 5653 NULL 5654}; 5655 5656static const struct attribute_group thermal_temp_input16_group = { 5657 .attrs = thermal_temp_input_attr 5658}; 5659 5660static const struct attribute_group thermal_temp_input8_group = { 5661 .attrs = &thermal_temp_input_attr[8] 5662}; 5663 5664#undef THERMAL_SENSOR_ATTR_TEMP 5665#undef THERMAL_ATTRS 5666 5667/* --------------------------------------------------------------------- */ 5668 5669static int __init thermal_init(struct ibm_init_struct *iibm) 5670{ 5671 u8 t, ta1, ta2; 5672 int i; 5673 int acpi_tmp7; 5674 int res; 5675 5676 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 5677 5678 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 5679 5680 if (thinkpad_id.ec_model) { 5681 /* 5682 * Direct EC access mode: sensors at registers 5683 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for 5684 * non-implemented, thermal sensors return 0x80 when 5685 * not available 5686 */ 5687 5688 ta1 = ta2 = 0; 5689 for (i = 0; i < 8; i++) { 5690 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 5691 ta1 |= t; 5692 } else { 5693 ta1 = 0; 5694 break; 5695 } 5696 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 5697 ta2 |= t; 5698 } else { 5699 ta1 = 0; 5700 break; 5701 } 5702 } 5703 if (ta1 == 0) { 5704 /* This is sheer paranoia, but we handle it anyway */ 5705 if (acpi_tmp7) { 5706 printk(TPACPI_ERR 5707 "ThinkPad ACPI EC access misbehaving, " 5708 "falling back to ACPI TMPx access " 5709 "mode\n"); 5710 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 5711 } else { 5712 printk(TPACPI_ERR 5713 "ThinkPad ACPI EC access misbehaving, " 5714 "disabling thermal sensors access\n"); 5715 thermal_read_mode = TPACPI_THERMAL_NONE; 5716 } 5717 } else { 5718 thermal_read_mode = 5719 (ta2 != 0) ? 5720 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 5721 } 5722 } else if (acpi_tmp7) { 5723 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 5724 /* 600e/x, 770e, 770x */ 5725 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; 5726 } else { 5727 /* Standard ACPI TMPx access, max 8 sensors */ 5728 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; 5729 } 5730 } else { 5731 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 5732 thermal_read_mode = TPACPI_THERMAL_NONE; 5733 } 5734 5735 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 5736 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 5737 thermal_read_mode); 5738 5739 switch (thermal_read_mode) { 5740 case TPACPI_THERMAL_TPEC_16: 5741 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, 5742 &thermal_temp_input16_group); 5743 if (res) 5744 return res; 5745 break; 5746 case TPACPI_THERMAL_TPEC_8: 5747 case TPACPI_THERMAL_ACPI_TMP07: 5748 case TPACPI_THERMAL_ACPI_UPDT: 5749 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, 5750 &thermal_temp_input8_group); 5751 if (res) 5752 return res; 5753 break; 5754 case TPACPI_THERMAL_NONE: 5755 default: 5756 return 1; 5757 } 5758 5759 return 0; 5760} 5761 5762static void thermal_exit(void) 5763{ 5764 switch (thermal_read_mode) { 5765 case TPACPI_THERMAL_TPEC_16: 5766 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, 5767 &thermal_temp_input16_group); 5768 break; 5769 case TPACPI_THERMAL_TPEC_8: 5770 case TPACPI_THERMAL_ACPI_TMP07: 5771 case TPACPI_THERMAL_ACPI_UPDT: 5772 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, 5773 &thermal_temp_input16_group); 5774 break; 5775 case TPACPI_THERMAL_NONE: 5776 default: 5777 break; 5778 } 5779} 5780 5781static int thermal_read(char *p) 5782{ 5783 int len = 0; 5784 int n, i; 5785 struct ibm_thermal_sensors_struct t; 5786 5787 n = thermal_get_sensors(&t); 5788 if (unlikely(n < 0)) 5789 return n; 5790 5791 len += sprintf(p + len, "temperatures:\t"); 5792 5793 if (n > 0) { 5794 for (i = 0; i < (n - 1); i++) 5795 len += sprintf(p + len, "%d ", t.temp[i] / 1000); 5796 len += sprintf(p + len, "%d\n", t.temp[i] / 1000); 5797 } else 5798 len += sprintf(p + len, "not supported\n"); 5799 5800 return len; 5801} 5802 5803static struct ibm_struct thermal_driver_data = { 5804 .name = "thermal", 5805 .read = thermal_read, 5806 .exit = thermal_exit, 5807}; 5808 5809/************************************************************************* 5810 * EC Dump subdriver 5811 */ 5812 5813static u8 ecdump_regs[256]; 5814 5815static int ecdump_read(char *p) 5816{ 5817 int len = 0; 5818 int i, j; 5819 u8 v; 5820 5821 len += sprintf(p + len, "EC " 5822 " +00 +01 +02 +03 +04 +05 +06 +07" 5823 " +08 +09 +0a +0b +0c +0d +0e +0f\n"); 5824 for (i = 0; i < 256; i += 16) { 5825 len += sprintf(p + len, "EC 0x%02x:", i); 5826 for (j = 0; j < 16; j++) { 5827 if (!acpi_ec_read(i + j, &v)) 5828 break; 5829 if (v != ecdump_regs[i + j]) 5830 len += sprintf(p + len, " *%02x", v); 5831 else 5832 len += sprintf(p + len, " %02x", v); 5833 ecdump_regs[i + j] = v; 5834 } 5835 len += sprintf(p + len, "\n"); 5836 if (j != 16) 5837 break; 5838 } 5839 5840 /* These are way too dangerous to advertise openly... */ 5841#if 0 5842 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>" 5843 " (<offset> is 00-ff, <value> is 00-ff)\n"); 5844 len += sprintf(p + len, "commands:\t0x<offset> <value> " 5845 " (<offset> is 00-ff, <value> is 0-255)\n"); 5846#endif 5847 return len; 5848} 5849 5850static int ecdump_write(char *buf) 5851{ 5852 char *cmd; 5853 int i, v; 5854 5855 while ((cmd = next_cmd(&buf))) { 5856 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) { 5857 /* i and v set */ 5858 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) { 5859 /* i and v set */ 5860 } else 5861 return -EINVAL; 5862 if (i >= 0 && i < 256 && v >= 0 && v < 256) { 5863 if (!acpi_ec_write(i, v)) 5864 return -EIO; 5865 } else 5866 return -EINVAL; 5867 } 5868 5869 return 0; 5870} 5871 5872static struct ibm_struct ecdump_driver_data = { 5873 .name = "ecdump", 5874 .read = ecdump_read, 5875 .write = ecdump_write, 5876 .flags.experimental = 1, 5877}; 5878 5879/************************************************************************* 5880 * Backlight/brightness subdriver 5881 */ 5882 5883#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 5884 5885/* 5886 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 5887 * CMOS NVRAM byte 0x5E, bits 0-3. 5888 * 5889 * EC HBRV (0x31) has the following layout 5890 * Bit 7: unknown function 5891 * Bit 6: unknown function 5892 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 5893 * Bit 4: must be set to zero to avoid problems 5894 * Bit 3-0: backlight brightness level 5895 * 5896 * brightness_get_raw returns status data in the HBRV layout 5897 * 5898 * WARNING: The X61 has been verified to use HBRV for something else, so 5899 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 5900 * testing on the very early *60 Lenovo models... 5901 */ 5902 5903enum { 5904 TP_EC_BACKLIGHT = 0x31, 5905 5906 /* TP_EC_BACKLIGHT bitmasks */ 5907 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 5908 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 5909 TP_EC_BACKLIGHT_MAPSW = 0x20, 5910}; 5911 5912enum tpacpi_brightness_access_mode { 5913 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 5914 TPACPI_BRGHT_MODE_EC, /* EC control */ 5915 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 5916 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 5917 TPACPI_BRGHT_MODE_MAX 5918}; 5919 5920static struct backlight_device *ibm_backlight_device; 5921 5922static enum tpacpi_brightness_access_mode brightness_mode = 5923 TPACPI_BRGHT_MODE_MAX; 5924 5925static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 5926 5927static struct mutex brightness_mutex; 5928 5929/* NVRAM brightness access, 5930 * call with brightness_mutex held! */ 5931static unsigned int tpacpi_brightness_nvram_get(void) 5932{ 5933 u8 lnvram; 5934 5935 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 5936 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 5937 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 5938 lnvram &= (tp_features.bright_16levels) ? 0x0f : 0x07; 5939 5940 return lnvram; 5941} 5942 5943static void tpacpi_brightness_checkpoint_nvram(void) 5944{ 5945 u8 lec = 0; 5946 u8 b_nvram; 5947 5948 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 5949 return; 5950 5951 vdbg_printk(TPACPI_DBG_BRGHT, 5952 "trying to checkpoint backlight level to NVRAM...\n"); 5953 5954 if (mutex_lock_killable(&brightness_mutex) < 0) 5955 return; 5956 5957 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 5958 goto unlock; 5959 lec &= TP_EC_BACKLIGHT_LVLMSK; 5960 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 5961 5962 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 5963 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 5964 /* NVRAM needs update */ 5965 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 5966 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 5967 b_nvram |= lec; 5968 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 5969 dbg_printk(TPACPI_DBG_BRGHT, 5970 "updated NVRAM backlight level to %u (0x%02x)\n", 5971 (unsigned int) lec, (unsigned int) b_nvram); 5972 } else 5973 vdbg_printk(TPACPI_DBG_BRGHT, 5974 "NVRAM backlight level already is %u (0x%02x)\n", 5975 (unsigned int) lec, (unsigned int) b_nvram); 5976 5977unlock: 5978 mutex_unlock(&brightness_mutex); 5979} 5980 5981 5982/* call with brightness_mutex held! */ 5983static int tpacpi_brightness_get_raw(int *status) 5984{ 5985 u8 lec = 0; 5986 5987 switch (brightness_mode) { 5988 case TPACPI_BRGHT_MODE_UCMS_STEP: 5989 *status = tpacpi_brightness_nvram_get(); 5990 return 0; 5991 case TPACPI_BRGHT_MODE_EC: 5992 case TPACPI_BRGHT_MODE_ECNVRAM: 5993 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 5994 return -EIO; 5995 *status = lec; 5996 return 0; 5997 default: 5998 return -ENXIO; 5999 } 6000} 6001 6002/* call with brightness_mutex held! */ 6003/* do NOT call with illegal backlight level value */ 6004static int tpacpi_brightness_set_ec(unsigned int value) 6005{ 6006 u8 lec = 0; 6007 6008 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6009 return -EIO; 6010 6011 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6012 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6013 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6014 return -EIO; 6015 6016 return 0; 6017} 6018 6019/* call with brightness_mutex held! */ 6020static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6021{ 6022 int cmos_cmd, inc; 6023 unsigned int current_value, i; 6024 6025 current_value = tpacpi_brightness_nvram_get(); 6026 6027 if (value == current_value) 6028 return 0; 6029 6030 cmos_cmd = (value > current_value) ? 6031 TP_CMOS_BRIGHTNESS_UP : 6032 TP_CMOS_BRIGHTNESS_DOWN; 6033 inc = (value > current_value) ? 1 : -1; 6034 6035 for (i = current_value; i != value; i += inc) 6036 if (issue_thinkpad_cmos_command(cmos_cmd)) 6037 return -EIO; 6038 6039 return 0; 6040} 6041 6042/* May return EINTR which can always be mapped to ERESTARTSYS */ 6043static int brightness_set(unsigned int value) 6044{ 6045 int res; 6046 6047 if (value > ((tp_features.bright_16levels)? 15 : 7) || 6048 value < 0) 6049 return -EINVAL; 6050 6051 vdbg_printk(TPACPI_DBG_BRGHT, 6052 "set backlight level to %d\n", value); 6053 6054 res = mutex_lock_killable(&brightness_mutex); 6055 if (res < 0) 6056 return res; 6057 6058 switch (brightness_mode) { 6059 case TPACPI_BRGHT_MODE_EC: 6060 case TPACPI_BRGHT_MODE_ECNVRAM: 6061 res = tpacpi_brightness_set_ec(value); 6062 break; 6063 case TPACPI_BRGHT_MODE_UCMS_STEP: 6064 res = tpacpi_brightness_set_ucmsstep(value); 6065 break; 6066 default: 6067 res = -ENXIO; 6068 } 6069 6070 mutex_unlock(&brightness_mutex); 6071 return res; 6072} 6073 6074/* sysfs backlight class ----------------------------------------------- */ 6075 6076static int brightness_update_status(struct backlight_device *bd) 6077{ 6078 unsigned int level = 6079 (bd->props.fb_blank == FB_BLANK_UNBLANK && 6080 bd->props.power == FB_BLANK_UNBLANK) ? 6081 bd->props.brightness : 0; 6082 6083 dbg_printk(TPACPI_DBG_BRGHT, 6084 "backlight: attempt to set level to %d\n", 6085 level); 6086 6087 /* it is the backlight class's job (caller) to handle 6088 * EINTR and other errors properly */ 6089 return brightness_set(level); 6090} 6091 6092static int brightness_get(struct backlight_device *bd) 6093{ 6094 int status, res; 6095 6096 res = mutex_lock_killable(&brightness_mutex); 6097 if (res < 0) 6098 return 0; 6099 6100 res = tpacpi_brightness_get_raw(&status); 6101 6102 mutex_unlock(&brightness_mutex); 6103 6104 if (res < 0) 6105 return 0; 6106 6107 return status & TP_EC_BACKLIGHT_LVLMSK; 6108} 6109 6110static void tpacpi_brightness_notify_change(void) 6111{ 6112 backlight_force_update(ibm_backlight_device, 6113 BACKLIGHT_UPDATE_HOTKEY); 6114} 6115 6116static struct backlight_ops ibm_backlight_data = { 6117 .get_brightness = brightness_get, 6118 .update_status = brightness_update_status, 6119}; 6120 6121/* --------------------------------------------------------------------- */ 6122 6123/* 6124 * These are only useful for models that have only one possibility 6125 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6126 * these quirks. 6127 */ 6128#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6129#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6130#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6131 6132static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6133 /* Models with ATI GPUs known to require ECNVRAM mode */ 6134 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6135 6136 /* Models with ATI GPUs that can use ECNVRAM */ 6137 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), 6138 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6139 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6140 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6141 6142 /* Models with Intel Extreme Graphics 2 */ 6143 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), 6144 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6145 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6146 6147 /* Models with Intel GMA900 */ 6148 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6149 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6150 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6151}; 6152 6153static int __init brightness_init(struct ibm_init_struct *iibm) 6154{ 6155 int b; 6156 unsigned long quirks; 6157 6158 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6159 6160 mutex_init(&brightness_mutex); 6161 6162 quirks = tpacpi_check_quirks(brightness_quirk_table, 6163 ARRAY_SIZE(brightness_quirk_table)); 6164 6165 /* 6166 * We always attempt to detect acpi support, so as to switch 6167 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6168 * going to publish a backlight interface 6169 */ 6170 b = tpacpi_check_std_acpi_brightness_support(); 6171 if (b > 0) { 6172 6173 if (acpi_video_backlight_support()) { 6174 if (brightness_enable > 1) { 6175 printk(TPACPI_NOTICE 6176 "Standard ACPI backlight interface " 6177 "available, not loading native one.\n"); 6178 return 1; 6179 } else if (brightness_enable == 1) { 6180 printk(TPACPI_NOTICE 6181 "Backlight control force enabled, even if standard " 6182 "ACPI backlight interface is available\n"); 6183 } 6184 } else { 6185 if (brightness_enable > 1) { 6186 printk(TPACPI_NOTICE 6187 "Standard ACPI backlight interface not " 6188 "available, thinkpad_acpi native " 6189 "brightness control enabled\n"); 6190 } 6191 } 6192 } 6193 6194 if (!brightness_enable) { 6195 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6196 "brightness support disabled by " 6197 "module parameter\n"); 6198 return 1; 6199 } 6200 6201 if (b > 16) { 6202 printk(TPACPI_ERR 6203 "Unsupported brightness interface, " 6204 "please contact %s\n", TPACPI_MAIL); 6205 return 1; 6206 } 6207 if (b == 16) 6208 tp_features.bright_16levels = 1; 6209 6210 /* 6211 * Check for module parameter bogosity, note that we 6212 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6213 * able to detect "unspecified" 6214 */ 6215 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6216 return -EINVAL; 6217 6218 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 6219 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 6220 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 6221 if (quirks & TPACPI_BRGHT_Q_EC) 6222 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 6223 else 6224 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 6225 6226 dbg_printk(TPACPI_DBG_BRGHT, 6227 "driver auto-selected brightness_mode=%d\n", 6228 brightness_mode); 6229 } 6230 6231 /* Safety */ 6232 if (thinkpad_id.vendor != PCI_VENDOR_ID_IBM && 6233 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 6234 brightness_mode == TPACPI_BRGHT_MODE_EC)) 6235 return -EINVAL; 6236 6237 if (tpacpi_brightness_get_raw(&b) < 0) 6238 return 1; 6239 6240 if (tp_features.bright_16levels) 6241 printk(TPACPI_INFO 6242 "detected a 16-level brightness capable ThinkPad\n"); 6243 6244 ibm_backlight_device = backlight_device_register( 6245 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL, 6246 &ibm_backlight_data); 6247 if (IS_ERR(ibm_backlight_device)) { 6248 int rc = PTR_ERR(ibm_backlight_device); 6249 ibm_backlight_device = NULL; 6250 printk(TPACPI_ERR "Could not register backlight device\n"); 6251 return rc; 6252 } 6253 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6254 "brightness is supported\n"); 6255 6256 if (quirks & TPACPI_BRGHT_Q_ASK) { 6257 printk(TPACPI_NOTICE 6258 "brightness: will use unverified default: " 6259 "brightness_mode=%d\n", brightness_mode); 6260 printk(TPACPI_NOTICE 6261 "brightness: please report to %s whether it works well " 6262 "or not on your ThinkPad\n", TPACPI_MAIL); 6263 } 6264 6265 ibm_backlight_device->props.max_brightness = 6266 (tp_features.bright_16levels)? 15 : 7; 6267 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 6268 backlight_update_status(ibm_backlight_device); 6269 6270 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6271 "brightness: registering brightness hotkeys " 6272 "as change notification\n"); 6273 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 6274 | TP_ACPI_HKEY_BRGHTUP_MASK 6275 | TP_ACPI_HKEY_BRGHTDWN_MASK);; 6276 return 0; 6277} 6278 6279static void brightness_suspend(pm_message_t state) 6280{ 6281 tpacpi_brightness_checkpoint_nvram(); 6282} 6283 6284static void brightness_shutdown(void) 6285{ 6286 tpacpi_brightness_checkpoint_nvram(); 6287} 6288 6289static void brightness_exit(void) 6290{ 6291 if (ibm_backlight_device) { 6292 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 6293 "calling backlight_device_unregister()\n"); 6294 backlight_device_unregister(ibm_backlight_device); 6295 } 6296 6297 tpacpi_brightness_checkpoint_nvram(); 6298} 6299 6300static int brightness_read(char *p) 6301{ 6302 int len = 0; 6303 int level; 6304 6305 level = brightness_get(NULL); 6306 if (level < 0) { 6307 len += sprintf(p + len, "level:\t\tunreadable\n"); 6308 } else { 6309 len += sprintf(p + len, "level:\t\t%d\n", level); 6310 len += sprintf(p + len, "commands:\tup, down\n"); 6311 len += sprintf(p + len, "commands:\tlevel <level>" 6312 " (<level> is 0-%d)\n", 6313 (tp_features.bright_16levels) ? 15 : 7); 6314 } 6315 6316 return len; 6317} 6318 6319static int brightness_write(char *buf) 6320{ 6321 int level; 6322 int rc; 6323 char *cmd; 6324 int max_level = (tp_features.bright_16levels) ? 15 : 7; 6325 6326 level = brightness_get(NULL); 6327 if (level < 0) 6328 return level; 6329 6330 while ((cmd = next_cmd(&buf))) { 6331 if (strlencmp(cmd, "up") == 0) { 6332 if (level < max_level) 6333 level++; 6334 } else if (strlencmp(cmd, "down") == 0) { 6335 if (level > 0) 6336 level--; 6337 } else if (sscanf(cmd, "level %d", &level) == 1 && 6338 level >= 0 && level <= max_level) { 6339 /* new level set */ 6340 } else 6341 return -EINVAL; 6342 } 6343 6344 tpacpi_disclose_usertask("procfs brightness", 6345 "set level to %d\n", level); 6346 6347 /* 6348 * Now we know what the final level should be, so we try to set it. 6349 * Doing it this way makes the syscall restartable in case of EINTR 6350 */ 6351 rc = brightness_set(level); 6352 if (!rc && ibm_backlight_device) 6353 backlight_force_update(ibm_backlight_device, 6354 BACKLIGHT_UPDATE_SYSFS); 6355 return (rc == -EINTR)? -ERESTARTSYS : rc; 6356} 6357 6358static struct ibm_struct brightness_driver_data = { 6359 .name = "brightness", 6360 .read = brightness_read, 6361 .write = brightness_write, 6362 .exit = brightness_exit, 6363 .suspend = brightness_suspend, 6364 .shutdown = brightness_shutdown, 6365}; 6366 6367/************************************************************************* 6368 * Volume subdriver 6369 */ 6370 6371static int volume_offset = 0x30; 6372 6373static int volume_read(char *p) 6374{ 6375 int len = 0; 6376 u8 level; 6377 6378 if (!acpi_ec_read(volume_offset, &level)) { 6379 len += sprintf(p + len, "level:\t\tunreadable\n"); 6380 } else { 6381 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf); 6382 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6)); 6383 len += sprintf(p + len, "commands:\tup, down, mute\n"); 6384 len += sprintf(p + len, "commands:\tlevel <level>" 6385 " (<level> is 0-15)\n"); 6386 } 6387 6388 return len; 6389} 6390 6391static int volume_write(char *buf) 6392{ 6393 int cmos_cmd, inc, i; 6394 u8 level, mute; 6395 int new_level, new_mute; 6396 char *cmd; 6397 6398 while ((cmd = next_cmd(&buf))) { 6399 if (!acpi_ec_read(volume_offset, &level)) 6400 return -EIO; 6401 new_mute = mute = level & 0x40; 6402 new_level = level = level & 0xf; 6403 6404 if (strlencmp(cmd, "up") == 0) { 6405 if (mute) 6406 new_mute = 0; 6407 else 6408 new_level = level == 15 ? 15 : level + 1; 6409 } else if (strlencmp(cmd, "down") == 0) { 6410 if (mute) 6411 new_mute = 0; 6412 else 6413 new_level = level == 0 ? 0 : level - 1; 6414 } else if (sscanf(cmd, "level %d", &new_level) == 1 && 6415 new_level >= 0 && new_level <= 15) { 6416 /* new_level set */ 6417 } else if (strlencmp(cmd, "mute") == 0) { 6418 new_mute = 0x40; 6419 } else 6420 return -EINVAL; 6421 6422 if (new_level != level) { 6423 /* mute doesn't change */ 6424 6425 cmos_cmd = (new_level > level) ? 6426 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN; 6427 inc = new_level > level ? 1 : -1; 6428 6429 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) || 6430 !acpi_ec_write(volume_offset, level))) 6431 return -EIO; 6432 6433 for (i = level; i != new_level; i += inc) 6434 if (issue_thinkpad_cmos_command(cmos_cmd) || 6435 !acpi_ec_write(volume_offset, i + inc)) 6436 return -EIO; 6437 6438 if (mute && 6439 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) || 6440 !acpi_ec_write(volume_offset, new_level + mute))) { 6441 return -EIO; 6442 } 6443 } 6444 6445 if (new_mute != mute) { 6446 /* level doesn't change */ 6447 6448 cmos_cmd = (new_mute) ? 6449 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP; 6450 6451 if (issue_thinkpad_cmos_command(cmos_cmd) || 6452 !acpi_ec_write(volume_offset, level + new_mute)) 6453 return -EIO; 6454 } 6455 } 6456 6457 return 0; 6458} 6459 6460static struct ibm_struct volume_driver_data = { 6461 .name = "volume", 6462 .read = volume_read, 6463 .write = volume_write, 6464}; 6465 6466/************************************************************************* 6467 * Fan subdriver 6468 */ 6469 6470/* 6471 * FAN ACCESS MODES 6472 * 6473 * TPACPI_FAN_RD_ACPI_GFAN: 6474 * ACPI GFAN method: returns fan level 6475 * 6476 * see TPACPI_FAN_WR_ACPI_SFAN 6477 * EC 0x2f (HFSP) not available if GFAN exists 6478 * 6479 * TPACPI_FAN_WR_ACPI_SFAN: 6480 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 6481 * 6482 * EC 0x2f (HFSP) might be available *for reading*, but do not use 6483 * it for writing. 6484 * 6485 * TPACPI_FAN_WR_TPEC: 6486 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 6487 * Supported on almost all ThinkPads 6488 * 6489 * Fan speed changes of any sort (including those caused by the 6490 * disengaged mode) are usually done slowly by the firmware as the 6491 * maximum ammount of fan duty cycle change per second seems to be 6492 * limited. 6493 * 6494 * Reading is not available if GFAN exists. 6495 * Writing is not available if SFAN exists. 6496 * 6497 * Bits 6498 * 7 automatic mode engaged; 6499 * (default operation mode of the ThinkPad) 6500 * fan level is ignored in this mode. 6501 * 6 full speed mode (takes precedence over bit 7); 6502 * not available on all thinkpads. May disable 6503 * the tachometer while the fan controller ramps up 6504 * the speed (which can take up to a few *minutes*). 6505 * Speeds up fan to 100% duty-cycle, which is far above 6506 * the standard RPM levels. It is not impossible that 6507 * it could cause hardware damage. 6508 * 5-3 unused in some models. Extra bits for fan level 6509 * in others, but still useless as all values above 6510 * 7 map to the same speed as level 7 in these models. 6511 * 2-0 fan level (0..7 usually) 6512 * 0x00 = stop 6513 * 0x07 = max (set when temperatures critical) 6514 * Some ThinkPads may have other levels, see 6515 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 6516 * 6517 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 6518 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT 6519 * does so, its initial value is meaningless (0x07). 6520 * 6521 * For firmware bugs, refer to: 6522 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 6523 * 6524 * ---- 6525 * 6526 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 6527 * Main fan tachometer reading (in RPM) 6528 * 6529 * This register is present on all ThinkPads with a new-style EC, and 6530 * it is known not to be present on the A21m/e, and T22, as there is 6531 * something else in offset 0x84 according to the ACPI DSDT. Other 6532 * ThinkPads from this same time period (and earlier) probably lack the 6533 * tachometer as well. 6534 * 6535 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 6536 * was never fixed by IBM to report the EC firmware version string 6537 * probably support the tachometer (like the early X models), so 6538 * detecting it is quite hard. We need more data to know for sure. 6539 * 6540 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 6541 * might result. 6542 * 6543 * FIRMWARE BUG: may go stale while the EC is switching to full speed 6544 * mode. 6545 * 6546 * For firmware bugs, refer to: 6547 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 6548 * 6549 * ---- 6550 * 6551 * ThinkPad EC register 0x31 bit 0 (only on select models) 6552 * 6553 * When bit 0 of EC register 0x31 is zero, the tachometer registers 6554 * show the speed of the main fan. When bit 0 of EC register 0x31 6555 * is one, the tachometer registers show the speed of the auxiliary 6556 * fan. 6557 * 6558 * Fan control seems to affect both fans, regardless of the state 6559 * of this bit. 6560 * 6561 * So far, only the firmware for the X60/X61 non-tablet versions 6562 * seem to support this (firmware TP-7M). 6563 * 6564 * TPACPI_FAN_WR_ACPI_FANS: 6565 * ThinkPad X31, X40, X41. Not available in the X60. 6566 * 6567 * FANS ACPI handle: takes three arguments: low speed, medium speed, 6568 * high speed. ACPI DSDT seems to map these three speeds to levels 6569 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 6570 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 6571 * 6572 * The speeds are stored on handles 6573 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 6574 * 6575 * There are three default speed sets, acessible as handles: 6576 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 6577 * 6578 * ACPI DSDT switches which set is in use depending on various 6579 * factors. 6580 * 6581 * TPACPI_FAN_WR_TPEC is also available and should be used to 6582 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 6583 * but the ACPI tables just mention level 7. 6584 */ 6585 6586enum { /* Fan control constants */ 6587 fan_status_offset = 0x2f, /* EC register 0x2f */ 6588 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 6589 * 0x84 must be read before 0x85 */ 6590 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 6591 bit 0 selects which fan is active */ 6592 6593 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 6594 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 6595 6596 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 6597}; 6598 6599enum fan_status_access_mode { 6600 TPACPI_FAN_NONE = 0, /* No fan status or control */ 6601 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 6602 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 6603}; 6604 6605enum fan_control_access_mode { 6606 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 6607 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 6608 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 6609 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 6610}; 6611 6612enum fan_control_commands { 6613 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 6614 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 6615 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 6616 * and also watchdog cmd */ 6617}; 6618 6619static int fan_control_allowed; 6620 6621static enum fan_status_access_mode fan_status_access_mode; 6622static enum fan_control_access_mode fan_control_access_mode; 6623static enum fan_control_commands fan_control_commands; 6624 6625static u8 fan_control_initial_status; 6626static u8 fan_control_desired_level; 6627static u8 fan_control_resume_level; 6628static int fan_watchdog_maxinterval; 6629 6630static struct mutex fan_mutex; 6631 6632static void fan_watchdog_fire(struct work_struct *ignored); 6633static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 6634 6635TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 6636TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 6637 "\\FSPD", /* 600e/x, 770e, 770x */ 6638 ); /* all others */ 6639TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 6640 "JFNS", /* 770x-JL */ 6641 ); /* all others */ 6642 6643/* 6644 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 6645 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 6646 * be in auto mode (0x80). 6647 * 6648 * This is corrected by any write to HFSP either by the driver, or 6649 * by the firmware. 6650 * 6651 * We assume 0x07 really means auto mode while this quirk is active, 6652 * as this is far more likely than the ThinkPad being in level 7, 6653 * which is only used by the firmware during thermal emergencies. 6654 * 6655 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 6656 * TP-70 (T43, R52), which are known to be buggy. 6657 */ 6658 6659static void fan_quirk1_setup(void) 6660{ 6661 if (fan_control_initial_status == 0x07) { 6662 printk(TPACPI_NOTICE 6663 "fan_init: initial fan status is unknown, " 6664 "assuming it is in auto mode\n"); 6665 tp_features.fan_ctrl_status_undef = 1; 6666 } 6667} 6668 6669static void fan_quirk1_handle(u8 *fan_status) 6670{ 6671 if (unlikely(tp_features.fan_ctrl_status_undef)) { 6672 if (*fan_status != fan_control_initial_status) { 6673 /* something changed the HFSP regisnter since 6674 * driver init time, so it is not undefined 6675 * anymore */ 6676 tp_features.fan_ctrl_status_undef = 0; 6677 } else { 6678 /* Return most likely status. In fact, it 6679 * might be the only possible status */ 6680 *fan_status = TP_EC_FAN_AUTO; 6681 } 6682 } 6683} 6684 6685/* Select main fan on X60/X61, NOOP on others */ 6686static bool fan_select_fan1(void) 6687{ 6688 if (tp_features.second_fan) { 6689 u8 val; 6690 6691 if (ec_read(fan_select_offset, &val) < 0) 6692 return false; 6693 val &= 0xFEU; 6694 if (ec_write(fan_select_offset, val) < 0) 6695 return false; 6696 } 6697 return true; 6698} 6699 6700/* Select secondary fan on X60/X61 */ 6701static bool fan_select_fan2(void) 6702{ 6703 u8 val; 6704 6705 if (!tp_features.second_fan) 6706 return false; 6707 6708 if (ec_read(fan_select_offset, &val) < 0) 6709 return false; 6710 val |= 0x01U; 6711 if (ec_write(fan_select_offset, val) < 0) 6712 return false; 6713 6714 return true; 6715} 6716 6717/* 6718 * Call with fan_mutex held 6719 */ 6720static void fan_update_desired_level(u8 status) 6721{ 6722 if ((status & 6723 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 6724 if (status > 7) 6725 fan_control_desired_level = 7; 6726 else 6727 fan_control_desired_level = status; 6728 } 6729} 6730 6731static int fan_get_status(u8 *status) 6732{ 6733 u8 s; 6734 6735 /* TODO: 6736 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 6737 6738 switch (fan_status_access_mode) { 6739 case TPACPI_FAN_RD_ACPI_GFAN: 6740 /* 570, 600e/x, 770e, 770x */ 6741 6742 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d"))) 6743 return -EIO; 6744 6745 if (likely(status)) 6746 *status = s & 0x07; 6747 6748 break; 6749 6750 case TPACPI_FAN_RD_TPEC: 6751 /* all except 570, 600e/x, 770e, 770x */ 6752 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 6753 return -EIO; 6754 6755 if (likely(status)) { 6756 *status = s; 6757 fan_quirk1_handle(status); 6758 } 6759 6760 break; 6761 6762 default: 6763 return -ENXIO; 6764 } 6765 6766 return 0; 6767} 6768 6769static int fan_get_status_safe(u8 *status) 6770{ 6771 int rc; 6772 u8 s; 6773 6774 if (mutex_lock_killable(&fan_mutex)) 6775 return -ERESTARTSYS; 6776 rc = fan_get_status(&s); 6777 if (!rc) 6778 fan_update_desired_level(s); 6779 mutex_unlock(&fan_mutex); 6780 6781 if (status) 6782 *status = s; 6783 6784 return rc; 6785} 6786 6787static int fan_get_speed(unsigned int *speed) 6788{ 6789 u8 hi, lo; 6790 6791 switch (fan_status_access_mode) { 6792 case TPACPI_FAN_RD_TPEC: 6793 /* all except 570, 600e/x, 770e, 770x */ 6794 if (unlikely(!fan_select_fan1())) 6795 return -EIO; 6796 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 6797 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 6798 return -EIO; 6799 6800 if (likely(speed)) 6801 *speed = (hi << 8) | lo; 6802 6803 break; 6804 6805 default: 6806 return -ENXIO; 6807 } 6808 6809 return 0; 6810} 6811 6812static int fan2_get_speed(unsigned int *speed) 6813{ 6814 u8 hi, lo; 6815 bool rc; 6816 6817 switch (fan_status_access_mode) { 6818 case TPACPI_FAN_RD_TPEC: 6819 /* all except 570, 600e/x, 770e, 770x */ 6820 if (unlikely(!fan_select_fan2())) 6821 return -EIO; 6822 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 6823 !acpi_ec_read(fan_rpm_offset + 1, &hi); 6824 fan_select_fan1(); /* play it safe */ 6825 if (rc) 6826 return -EIO; 6827 6828 if (likely(speed)) 6829 *speed = (hi << 8) | lo; 6830 6831 break; 6832 6833 default: 6834 return -ENXIO; 6835 } 6836 6837 return 0; 6838} 6839 6840static int fan_set_level(int level) 6841{ 6842 if (!fan_control_allowed) 6843 return -EPERM; 6844 6845 switch (fan_control_access_mode) { 6846 case TPACPI_FAN_WR_ACPI_SFAN: 6847 if (level >= 0 && level <= 7) { 6848 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 6849 return -EIO; 6850 } else 6851 return -EINVAL; 6852 break; 6853 6854 case TPACPI_FAN_WR_ACPI_FANS: 6855 case TPACPI_FAN_WR_TPEC: 6856 if (!(level & TP_EC_FAN_AUTO) && 6857 !(level & TP_EC_FAN_FULLSPEED) && 6858 ((level < 0) || (level > 7))) 6859 return -EINVAL; 6860 6861 /* safety net should the EC not support AUTO 6862 * or FULLSPEED mode bits and just ignore them */ 6863 if (level & TP_EC_FAN_FULLSPEED) 6864 level |= 7; /* safety min speed 7 */ 6865 else if (level & TP_EC_FAN_AUTO) 6866 level |= 4; /* safety min speed 4 */ 6867 6868 if (!acpi_ec_write(fan_status_offset, level)) 6869 return -EIO; 6870 else 6871 tp_features.fan_ctrl_status_undef = 0; 6872 break; 6873 6874 default: 6875 return -ENXIO; 6876 } 6877 6878 vdbg_printk(TPACPI_DBG_FAN, 6879 "fan control: set fan control register to 0x%02x\n", level); 6880 return 0; 6881} 6882 6883static int fan_set_level_safe(int level) 6884{ 6885 int rc; 6886 6887 if (!fan_control_allowed) 6888 return -EPERM; 6889 6890 if (mutex_lock_killable(&fan_mutex)) 6891 return -ERESTARTSYS; 6892 6893 if (level == TPACPI_FAN_LAST_LEVEL) 6894 level = fan_control_desired_level; 6895 6896 rc = fan_set_level(level); 6897 if (!rc) 6898 fan_update_desired_level(level); 6899 6900 mutex_unlock(&fan_mutex); 6901 return rc; 6902} 6903 6904static int fan_set_enable(void) 6905{ 6906 u8 s; 6907 int rc; 6908 6909 if (!fan_control_allowed) 6910 return -EPERM; 6911 6912 if (mutex_lock_killable(&fan_mutex)) 6913 return -ERESTARTSYS; 6914 6915 switch (fan_control_access_mode) { 6916 case TPACPI_FAN_WR_ACPI_FANS: 6917 case TPACPI_FAN_WR_TPEC: 6918 rc = fan_get_status(&s); 6919 if (rc < 0) 6920 break; 6921 6922 /* Don't go out of emergency fan mode */ 6923 if (s != 7) { 6924 s &= 0x07; 6925 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 6926 } 6927 6928 if (!acpi_ec_write(fan_status_offset, s)) 6929 rc = -EIO; 6930 else { 6931 tp_features.fan_ctrl_status_undef = 0; 6932 rc = 0; 6933 } 6934 break; 6935 6936 case TPACPI_FAN_WR_ACPI_SFAN: 6937 rc = fan_get_status(&s); 6938 if (rc < 0) 6939 break; 6940 6941 s &= 0x07; 6942 6943 /* Set fan to at least level 4 */ 6944 s |= 4; 6945 6946 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 6947 rc = -EIO; 6948 else 6949 rc = 0; 6950 break; 6951 6952 default: 6953 rc = -ENXIO; 6954 } 6955 6956 mutex_unlock(&fan_mutex); 6957 6958 if (!rc) 6959 vdbg_printk(TPACPI_DBG_FAN, 6960 "fan control: set fan control register to 0x%02x\n", 6961 s); 6962 return rc; 6963} 6964 6965static int fan_set_disable(void) 6966{ 6967 int rc; 6968 6969 if (!fan_control_allowed) 6970 return -EPERM; 6971 6972 if (mutex_lock_killable(&fan_mutex)) 6973 return -ERESTARTSYS; 6974 6975 rc = 0; 6976 switch (fan_control_access_mode) { 6977 case TPACPI_FAN_WR_ACPI_FANS: 6978 case TPACPI_FAN_WR_TPEC: 6979 if (!acpi_ec_write(fan_status_offset, 0x00)) 6980 rc = -EIO; 6981 else { 6982 fan_control_desired_level = 0; 6983 tp_features.fan_ctrl_status_undef = 0; 6984 } 6985 break; 6986 6987 case TPACPI_FAN_WR_ACPI_SFAN: 6988 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 6989 rc = -EIO; 6990 else 6991 fan_control_desired_level = 0; 6992 break; 6993 6994 default: 6995 rc = -ENXIO; 6996 } 6997 6998 if (!rc) 6999 vdbg_printk(TPACPI_DBG_FAN, 7000 "fan control: set fan control register to 0\n"); 7001 7002 mutex_unlock(&fan_mutex); 7003 return rc; 7004} 7005 7006static int fan_set_speed(int speed) 7007{ 7008 int rc; 7009 7010 if (!fan_control_allowed) 7011 return -EPERM; 7012 7013 if (mutex_lock_killable(&fan_mutex)) 7014 return -ERESTARTSYS; 7015 7016 rc = 0; 7017 switch (fan_control_access_mode) { 7018 case TPACPI_FAN_WR_ACPI_FANS: 7019 if (speed >= 0 && speed <= 65535) { 7020 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 7021 speed, speed, speed)) 7022 rc = -EIO; 7023 } else 7024 rc = -EINVAL; 7025 break; 7026 7027 default: 7028 rc = -ENXIO; 7029 } 7030 7031 mutex_unlock(&fan_mutex); 7032 return rc; 7033} 7034 7035static void fan_watchdog_reset(void) 7036{ 7037 static int fan_watchdog_active; 7038 7039 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 7040 return; 7041 7042 if (fan_watchdog_active) 7043 cancel_delayed_work(&fan_watchdog_task); 7044 7045 if (fan_watchdog_maxinterval > 0 && 7046 tpacpi_lifecycle != TPACPI_LIFE_EXITING) { 7047 fan_watchdog_active = 1; 7048 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task, 7049 msecs_to_jiffies(fan_watchdog_maxinterval 7050 * 1000))) { 7051 printk(TPACPI_ERR 7052 "failed to queue the fan watchdog, " 7053 "watchdog will not trigger\n"); 7054 } 7055 } else 7056 fan_watchdog_active = 0; 7057} 7058 7059static void fan_watchdog_fire(struct work_struct *ignored) 7060{ 7061 int rc; 7062 7063 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 7064 return; 7065 7066 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n"); 7067 rc = fan_set_enable(); 7068 if (rc < 0) { 7069 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, " 7070 "will try again later...\n", -rc); 7071 /* reschedule for later */ 7072 fan_watchdog_reset(); 7073 } 7074} 7075 7076/* 7077 * SYSFS fan layout: hwmon compatible (device) 7078 * 7079 * pwm*_enable: 7080 * 0: "disengaged" mode 7081 * 1: manual mode 7082 * 2: native EC "auto" mode (recommended, hardware default) 7083 * 7084 * pwm*: set speed in manual mode, ignored otherwise. 7085 * 0 is level 0; 255 is level 7. Intermediate points done with linear 7086 * interpolation. 7087 * 7088 * fan*_input: tachometer reading, RPM 7089 * 7090 * 7091 * SYSFS fan layout: extensions 7092 * 7093 * fan_watchdog (driver): 7094 * fan watchdog interval in seconds, 0 disables (default), max 120 7095 */ 7096 7097/* sysfs fan pwm1_enable ----------------------------------------------- */ 7098static ssize_t fan_pwm1_enable_show(struct device *dev, 7099 struct device_attribute *attr, 7100 char *buf) 7101{ 7102 int res, mode; 7103 u8 status; 7104 7105 res = fan_get_status_safe(&status); 7106 if (res) 7107 return res; 7108 7109 if (status & TP_EC_FAN_FULLSPEED) { 7110 mode = 0; 7111 } else if (status & TP_EC_FAN_AUTO) { 7112 mode = 2; 7113 } else 7114 mode = 1; 7115 7116 return snprintf(buf, PAGE_SIZE, "%d\n", mode); 7117} 7118 7119static ssize_t fan_pwm1_enable_store(struct device *dev, 7120 struct device_attribute *attr, 7121 const char *buf, size_t count) 7122{ 7123 unsigned long t; 7124 int res, level; 7125 7126 if (parse_strtoul(buf, 2, &t)) 7127 return -EINVAL; 7128 7129 tpacpi_disclose_usertask("hwmon pwm1_enable", 7130 "set fan mode to %lu\n", t); 7131 7132 switch (t) { 7133 case 0: 7134 level = TP_EC_FAN_FULLSPEED; 7135 break; 7136 case 1: 7137 level = TPACPI_FAN_LAST_LEVEL; 7138 break; 7139 case 2: 7140 level = TP_EC_FAN_AUTO; 7141 break; 7142 case 3: 7143 /* reserved for software-controlled auto mode */ 7144 return -ENOSYS; 7145 default: 7146 return -EINVAL; 7147 } 7148 7149 res = fan_set_level_safe(level); 7150 if (res == -ENXIO) 7151 return -EINVAL; 7152 else if (res < 0) 7153 return res; 7154 7155 fan_watchdog_reset(); 7156 7157 return count; 7158} 7159 7160static struct device_attribute dev_attr_fan_pwm1_enable = 7161 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 7162 fan_pwm1_enable_show, fan_pwm1_enable_store); 7163 7164/* sysfs fan pwm1 ------------------------------------------------------ */ 7165static ssize_t fan_pwm1_show(struct device *dev, 7166 struct device_attribute *attr, 7167 char *buf) 7168{ 7169 int res; 7170 u8 status; 7171 7172 res = fan_get_status_safe(&status); 7173 if (res) 7174 return res; 7175 7176 if ((status & 7177 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 7178 status = fan_control_desired_level; 7179 7180 if (status > 7) 7181 status = 7; 7182 7183 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); 7184} 7185 7186static ssize_t fan_pwm1_store(struct device *dev, 7187 struct device_attribute *attr, 7188 const char *buf, size_t count) 7189{ 7190 unsigned long s; 7191 int rc; 7192 u8 status, newlevel; 7193 7194 if (parse_strtoul(buf, 255, &s)) 7195 return -EINVAL; 7196 7197 tpacpi_disclose_usertask("hwmon pwm1", 7198 "set fan speed to %lu\n", s); 7199 7200 /* scale down from 0-255 to 0-7 */ 7201 newlevel = (s >> 5) & 0x07; 7202 7203 if (mutex_lock_killable(&fan_mutex)) 7204 return -ERESTARTSYS; 7205 7206 rc = fan_get_status(&status); 7207 if (!rc && (status & 7208 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 7209 rc = fan_set_level(newlevel); 7210 if (rc == -ENXIO) 7211 rc = -EINVAL; 7212 else if (!rc) { 7213 fan_update_desired_level(newlevel); 7214 fan_watchdog_reset(); 7215 } 7216 } 7217 7218 mutex_unlock(&fan_mutex); 7219 return (rc)? rc : count; 7220} 7221 7222static struct device_attribute dev_attr_fan_pwm1 = 7223 __ATTR(pwm1, S_IWUSR | S_IRUGO, 7224 fan_pwm1_show, fan_pwm1_store); 7225 7226/* sysfs fan fan1_input ------------------------------------------------ */ 7227static ssize_t fan_fan1_input_show(struct device *dev, 7228 struct device_attribute *attr, 7229 char *buf) 7230{ 7231 int res; 7232 unsigned int speed; 7233 7234 res = fan_get_speed(&speed); 7235 if (res < 0) 7236 return res; 7237 7238 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 7239} 7240 7241static struct device_attribute dev_attr_fan_fan1_input = 7242 __ATTR(fan1_input, S_IRUGO, 7243 fan_fan1_input_show, NULL); 7244 7245/* sysfs fan fan2_input ------------------------------------------------ */ 7246static ssize_t fan_fan2_input_show(struct device *dev, 7247 struct device_attribute *attr, 7248 char *buf) 7249{ 7250 int res; 7251 unsigned int speed; 7252 7253 res = fan2_get_speed(&speed); 7254 if (res < 0) 7255 return res; 7256 7257 return snprintf(buf, PAGE_SIZE, "%u\n", speed); 7258} 7259 7260static struct device_attribute dev_attr_fan_fan2_input = 7261 __ATTR(fan2_input, S_IRUGO, 7262 fan_fan2_input_show, NULL); 7263 7264/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 7265static ssize_t fan_fan_watchdog_show(struct device_driver *drv, 7266 char *buf) 7267{ 7268 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); 7269} 7270 7271static ssize_t fan_fan_watchdog_store(struct device_driver *drv, 7272 const char *buf, size_t count) 7273{ 7274 unsigned long t; 7275 7276 if (parse_strtoul(buf, 120, &t)) 7277 return -EINVAL; 7278 7279 if (!fan_control_allowed) 7280 return -EPERM; 7281 7282 fan_watchdog_maxinterval = t; 7283 fan_watchdog_reset(); 7284 7285 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 7286 7287 return count; 7288} 7289 7290static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO, 7291 fan_fan_watchdog_show, fan_fan_watchdog_store); 7292 7293/* --------------------------------------------------------------------- */ 7294static struct attribute *fan_attributes[] = { 7295 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr, 7296 &dev_attr_fan_fan1_input.attr, 7297 NULL, /* for fan2_input */ 7298 NULL 7299}; 7300 7301static const struct attribute_group fan_attr_group = { 7302 .attrs = fan_attributes, 7303}; 7304 7305#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */ 7306#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 7307 7308#define TPACPI_FAN_QI(__id1, __id2, __quirks) \ 7309 { .vendor = PCI_VENDOR_ID_IBM, \ 7310 .bios = TPACPI_MATCH_ANY, \ 7311 .ec = TPID(__id1, __id2), \ 7312 .quirks = __quirks } 7313 7314#define TPACPI_FAN_QL(__id1, __id2, __quirks) \ 7315 { .vendor = PCI_VENDOR_ID_LENOVO, \ 7316 .bios = TPACPI_MATCH_ANY, \ 7317 .ec = TPID(__id1, __id2), \ 7318 .quirks = __quirks } 7319 7320static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 7321 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1), 7322 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1), 7323 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1), 7324 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1), 7325 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN), 7326}; 7327 7328#undef TPACPI_FAN_QL 7329#undef TPACPI_FAN_QI 7330 7331static int __init fan_init(struct ibm_init_struct *iibm) 7332{ 7333 int rc; 7334 unsigned long quirks; 7335 7336 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 7337 "initializing fan subdriver\n"); 7338 7339 mutex_init(&fan_mutex); 7340 fan_status_access_mode = TPACPI_FAN_NONE; 7341 fan_control_access_mode = TPACPI_FAN_WR_NONE; 7342 fan_control_commands = 0; 7343 fan_watchdog_maxinterval = 0; 7344 tp_features.fan_ctrl_status_undef = 0; 7345 tp_features.second_fan = 0; 7346 fan_control_desired_level = 7; 7347 7348 TPACPI_ACPIHANDLE_INIT(fans); 7349 TPACPI_ACPIHANDLE_INIT(gfan); 7350 TPACPI_ACPIHANDLE_INIT(sfan); 7351 7352 quirks = tpacpi_check_quirks(fan_quirk_table, 7353 ARRAY_SIZE(fan_quirk_table)); 7354 7355 if (gfan_handle) { 7356 /* 570, 600e/x, 770e, 770x */ 7357 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 7358 } else { 7359 /* all other ThinkPads: note that even old-style 7360 * ThinkPad ECs supports the fan control register */ 7361 if (likely(acpi_ec_read(fan_status_offset, 7362 &fan_control_initial_status))) { 7363 fan_status_access_mode = TPACPI_FAN_RD_TPEC; 7364 if (quirks & TPACPI_FAN_Q1) 7365 fan_quirk1_setup(); 7366 if (quirks & TPACPI_FAN_2FAN) { 7367 tp_features.second_fan = 1; 7368 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 7369 "secondary fan support enabled\n"); 7370 } 7371 } else { 7372 printk(TPACPI_ERR 7373 "ThinkPad ACPI EC access misbehaving, " 7374 "fan status and control unavailable\n"); 7375 return 1; 7376 } 7377 } 7378 7379 if (sfan_handle) { 7380 /* 570, 770x-JL */ 7381 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 7382 fan_control_commands |= 7383 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 7384 } else { 7385 if (!gfan_handle) { 7386 /* gfan without sfan means no fan control */ 7387 /* all other models implement TP EC 0x2f control */ 7388 7389 if (fans_handle) { 7390 /* X31, X40, X41 */ 7391 fan_control_access_mode = 7392 TPACPI_FAN_WR_ACPI_FANS; 7393 fan_control_commands |= 7394 TPACPI_FAN_CMD_SPEED | 7395 TPACPI_FAN_CMD_LEVEL | 7396 TPACPI_FAN_CMD_ENABLE; 7397 } else { 7398 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 7399 fan_control_commands |= 7400 TPACPI_FAN_CMD_LEVEL | 7401 TPACPI_FAN_CMD_ENABLE; 7402 } 7403 } 7404 } 7405 7406 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 7407 "fan is %s, modes %d, %d\n", 7408 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 7409 fan_control_access_mode != TPACPI_FAN_WR_NONE), 7410 fan_status_access_mode, fan_control_access_mode); 7411 7412 /* fan control master switch */ 7413 if (!fan_control_allowed) { 7414 fan_control_access_mode = TPACPI_FAN_WR_NONE; 7415 fan_control_commands = 0; 7416 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 7417 "fan control features disabled by parameter\n"); 7418 } 7419 7420 /* update fan_control_desired_level */ 7421 if (fan_status_access_mode != TPACPI_FAN_NONE) 7422 fan_get_status_safe(NULL); 7423 7424 if (fan_status_access_mode != TPACPI_FAN_NONE || 7425 fan_control_access_mode != TPACPI_FAN_WR_NONE) { 7426 if (tp_features.second_fan) { 7427 /* attach second fan tachometer */ 7428 fan_attributes[ARRAY_SIZE(fan_attributes)-2] = 7429 &dev_attr_fan_fan2_input.attr; 7430 } 7431 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, 7432 &fan_attr_group); 7433 if (rc < 0) 7434 return rc; 7435 7436 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, 7437 &driver_attr_fan_watchdog); 7438 if (rc < 0) { 7439 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, 7440 &fan_attr_group); 7441 return rc; 7442 } 7443 return 0; 7444 } else 7445 return 1; 7446} 7447 7448static void fan_exit(void) 7449{ 7450 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 7451 "cancelling any pending fan watchdog tasks\n"); 7452 7453 /* FIXME: can we really do this unconditionally? */ 7454 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group); 7455 driver_remove_file(&tpacpi_hwmon_pdriver.driver, 7456 &driver_attr_fan_watchdog); 7457 7458 cancel_delayed_work(&fan_watchdog_task); 7459 flush_workqueue(tpacpi_wq); 7460} 7461 7462static void fan_suspend(pm_message_t state) 7463{ 7464 int rc; 7465 7466 if (!fan_control_allowed) 7467 return; 7468 7469 /* Store fan status in cache */ 7470 fan_control_resume_level = 0; 7471 rc = fan_get_status_safe(&fan_control_resume_level); 7472 if (rc < 0) 7473 printk(TPACPI_NOTICE 7474 "failed to read fan level for later " 7475 "restore during resume: %d\n", rc); 7476 7477 /* if it is undefined, don't attempt to restore it. 7478 * KEEP THIS LAST */ 7479 if (tp_features.fan_ctrl_status_undef) 7480 fan_control_resume_level = 0; 7481} 7482 7483static void fan_resume(void) 7484{ 7485 u8 current_level = 7; 7486 bool do_set = false; 7487 int rc; 7488 7489 /* DSDT *always* updates status on resume */ 7490 tp_features.fan_ctrl_status_undef = 0; 7491 7492 if (!fan_control_allowed || 7493 !fan_control_resume_level || 7494 (fan_get_status_safe(¤t_level) < 0)) 7495 return; 7496 7497 switch (fan_control_access_mode) { 7498 case TPACPI_FAN_WR_ACPI_SFAN: 7499 /* never decrease fan level */ 7500 do_set = (fan_control_resume_level > current_level); 7501 break; 7502 case TPACPI_FAN_WR_ACPI_FANS: 7503 case TPACPI_FAN_WR_TPEC: 7504 /* never decrease fan level, scale is: 7505 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 7506 * 7507 * We expect the firmware to set either 7 or AUTO, but we 7508 * handle FULLSPEED out of paranoia. 7509 * 7510 * So, we can safely only restore FULLSPEED or 7, anything 7511 * else could slow the fan. Restoring AUTO is useless, at 7512 * best that's exactly what the DSDT already set (it is the 7513 * slower it uses). 7514 * 7515 * Always keep in mind that the DSDT *will* have set the 7516 * fans to what the vendor supposes is the best level. We 7517 * muck with it only to speed the fan up. 7518 */ 7519 if (fan_control_resume_level != 7 && 7520 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 7521 return; 7522 else 7523 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 7524 (current_level != fan_control_resume_level); 7525 break; 7526 default: 7527 return; 7528 } 7529 if (do_set) { 7530 printk(TPACPI_NOTICE 7531 "restoring fan level to 0x%02x\n", 7532 fan_control_resume_level); 7533 rc = fan_set_level_safe(fan_control_resume_level); 7534 if (rc < 0) 7535 printk(TPACPI_NOTICE 7536 "failed to restore fan level: %d\n", rc); 7537 } 7538} 7539 7540static int fan_read(char *p) 7541{ 7542 int len = 0; 7543 int rc; 7544 u8 status; 7545 unsigned int speed = 0; 7546 7547 switch (fan_status_access_mode) { 7548 case TPACPI_FAN_RD_ACPI_GFAN: 7549 /* 570, 600e/x, 770e, 770x */ 7550 rc = fan_get_status_safe(&status); 7551 if (rc < 0) 7552 return rc; 7553 7554 len += sprintf(p + len, "status:\t\t%s\n" 7555 "level:\t\t%d\n", 7556 (status != 0) ? "enabled" : "disabled", status); 7557 break; 7558 7559 case TPACPI_FAN_RD_TPEC: 7560 /* all except 570, 600e/x, 770e, 770x */ 7561 rc = fan_get_status_safe(&status); 7562 if (rc < 0) 7563 return rc; 7564 7565 len += sprintf(p + len, "status:\t\t%s\n", 7566 (status != 0) ? "enabled" : "disabled"); 7567 7568 rc = fan_get_speed(&speed); 7569 if (rc < 0) 7570 return rc; 7571 7572 len += sprintf(p + len, "speed:\t\t%d\n", speed); 7573 7574 if (status & TP_EC_FAN_FULLSPEED) 7575 /* Disengaged mode takes precedence */ 7576 len += sprintf(p + len, "level:\t\tdisengaged\n"); 7577 else if (status & TP_EC_FAN_AUTO) 7578 len += sprintf(p + len, "level:\t\tauto\n"); 7579 else 7580 len += sprintf(p + len, "level:\t\t%d\n", status); 7581 break; 7582 7583 case TPACPI_FAN_NONE: 7584 default: 7585 len += sprintf(p + len, "status:\t\tnot supported\n"); 7586 } 7587 7588 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 7589 len += sprintf(p + len, "commands:\tlevel <level>"); 7590 7591 switch (fan_control_access_mode) { 7592 case TPACPI_FAN_WR_ACPI_SFAN: 7593 len += sprintf(p + len, " (<level> is 0-7)\n"); 7594 break; 7595 7596 default: 7597 len += sprintf(p + len, " (<level> is 0-7, " 7598 "auto, disengaged, full-speed)\n"); 7599 break; 7600 } 7601 } 7602 7603 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 7604 len += sprintf(p + len, "commands:\tenable, disable\n" 7605 "commands:\twatchdog <timeout> (<timeout> " 7606 "is 0 (off), 1-120 (seconds))\n"); 7607 7608 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 7609 len += sprintf(p + len, "commands:\tspeed <speed>" 7610 " (<speed> is 0-65535)\n"); 7611 7612 return len; 7613} 7614 7615static int fan_write_cmd_level(const char *cmd, int *rc) 7616{ 7617 int level; 7618 7619 if (strlencmp(cmd, "level auto") == 0) 7620 level = TP_EC_FAN_AUTO; 7621 else if ((strlencmp(cmd, "level disengaged") == 0) | 7622 (strlencmp(cmd, "level full-speed") == 0)) 7623 level = TP_EC_FAN_FULLSPEED; 7624 else if (sscanf(cmd, "level %d", &level) != 1) 7625 return 0; 7626 7627 *rc = fan_set_level_safe(level); 7628 if (*rc == -ENXIO) 7629 printk(TPACPI_ERR "level command accepted for unsupported " 7630 "access mode %d", fan_control_access_mode); 7631 else if (!*rc) 7632 tpacpi_disclose_usertask("procfs fan", 7633 "set level to %d\n", level); 7634 7635 return 1; 7636} 7637 7638static int fan_write_cmd_enable(const char *cmd, int *rc) 7639{ 7640 if (strlencmp(cmd, "enable") != 0) 7641 return 0; 7642 7643 *rc = fan_set_enable(); 7644 if (*rc == -ENXIO) 7645 printk(TPACPI_ERR "enable command accepted for unsupported " 7646 "access mode %d", fan_control_access_mode); 7647 else if (!*rc) 7648 tpacpi_disclose_usertask("procfs fan", "enable\n"); 7649 7650 return 1; 7651} 7652 7653static int fan_write_cmd_disable(const char *cmd, int *rc) 7654{ 7655 if (strlencmp(cmd, "disable") != 0) 7656 return 0; 7657 7658 *rc = fan_set_disable(); 7659 if (*rc == -ENXIO) 7660 printk(TPACPI_ERR "disable command accepted for unsupported " 7661 "access mode %d", fan_control_access_mode); 7662 else if (!*rc) 7663 tpacpi_disclose_usertask("procfs fan", "disable\n"); 7664 7665 return 1; 7666} 7667 7668static int fan_write_cmd_speed(const char *cmd, int *rc) 7669{ 7670 int speed; 7671 7672 /* TODO: 7673 * Support speed <low> <medium> <high> ? */ 7674 7675 if (sscanf(cmd, "speed %d", &speed) != 1) 7676 return 0; 7677 7678 *rc = fan_set_speed(speed); 7679 if (*rc == -ENXIO) 7680 printk(TPACPI_ERR "speed command accepted for unsupported " 7681 "access mode %d", fan_control_access_mode); 7682 else if (!*rc) 7683 tpacpi_disclose_usertask("procfs fan", 7684 "set speed to %d\n", speed); 7685 7686 return 1; 7687} 7688 7689static int fan_write_cmd_watchdog(const char *cmd, int *rc) 7690{ 7691 int interval; 7692 7693 if (sscanf(cmd, "watchdog %d", &interval) != 1) 7694 return 0; 7695 7696 if (interval < 0 || interval > 120) 7697 *rc = -EINVAL; 7698 else { 7699 fan_watchdog_maxinterval = interval; 7700 tpacpi_disclose_usertask("procfs fan", 7701 "set watchdog timer to %d\n", 7702 interval); 7703 } 7704 7705 return 1; 7706} 7707 7708static int fan_write(char *buf) 7709{ 7710 char *cmd; 7711 int rc = 0; 7712 7713 while (!rc && (cmd = next_cmd(&buf))) { 7714 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 7715 fan_write_cmd_level(cmd, &rc)) && 7716 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 7717 (fan_write_cmd_enable(cmd, &rc) || 7718 fan_write_cmd_disable(cmd, &rc) || 7719 fan_write_cmd_watchdog(cmd, &rc))) && 7720 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 7721 fan_write_cmd_speed(cmd, &rc)) 7722 ) 7723 rc = -EINVAL; 7724 else if (!rc) 7725 fan_watchdog_reset(); 7726 } 7727 7728 return rc; 7729} 7730 7731static struct ibm_struct fan_driver_data = { 7732 .name = "fan", 7733 .read = fan_read, 7734 .write = fan_write, 7735 .exit = fan_exit, 7736 .suspend = fan_suspend, 7737 .resume = fan_resume, 7738}; 7739 7740/**************************************************************************** 7741 **************************************************************************** 7742 * 7743 * Infrastructure 7744 * 7745 **************************************************************************** 7746 ****************************************************************************/ 7747 7748/* 7749 * HKEY event callout for other subdrivers go here 7750 * (yes, it is ugly, but it is quick, safe, and gets the job done 7751 */ 7752static void tpacpi_driver_event(const unsigned int hkey_event) 7753{ 7754 if (ibm_backlight_device) { 7755 switch (hkey_event) { 7756 case TP_HKEY_EV_BRGHT_UP: 7757 case TP_HKEY_EV_BRGHT_DOWN: 7758 tpacpi_brightness_notify_change(); 7759 } 7760 } 7761} 7762 7763 7764 7765static void hotkey_driver_event(const unsigned int scancode) 7766{ 7767 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode); 7768} 7769 7770/* sysfs name ---------------------------------------------------------- */ 7771static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev, 7772 struct device_attribute *attr, 7773 char *buf) 7774{ 7775 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME); 7776} 7777 7778static struct device_attribute dev_attr_thinkpad_acpi_pdev_name = 7779 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL); 7780 7781/* --------------------------------------------------------------------- */ 7782 7783/* /proc support */ 7784static struct proc_dir_entry *proc_dir; 7785 7786/* 7787 * Module and infrastructure proble, init and exit handling 7788 */ 7789 7790static int force_load; 7791 7792#ifdef CONFIG_THINKPAD_ACPI_DEBUG 7793static const char * __init str_supported(int is_supported) 7794{ 7795 static char text_unsupported[] __initdata = "not supported"; 7796 7797 return (is_supported)? &text_unsupported[4] : &text_unsupported[0]; 7798} 7799#endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 7800 7801static void ibm_exit(struct ibm_struct *ibm) 7802{ 7803 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 7804 7805 list_del_init(&ibm->all_drivers); 7806 7807 if (ibm->flags.acpi_notify_installed) { 7808 dbg_printk(TPACPI_DBG_EXIT, 7809 "%s: acpi_remove_notify_handler\n", ibm->name); 7810 BUG_ON(!ibm->acpi); 7811 acpi_remove_notify_handler(*ibm->acpi->handle, 7812 ibm->acpi->type, 7813 dispatch_acpi_notify); 7814 ibm->flags.acpi_notify_installed = 0; 7815 ibm->flags.acpi_notify_installed = 0; 7816 } 7817 7818 if (ibm->flags.proc_created) { 7819 dbg_printk(TPACPI_DBG_EXIT, 7820 "%s: remove_proc_entry\n", ibm->name); 7821 remove_proc_entry(ibm->name, proc_dir); 7822 ibm->flags.proc_created = 0; 7823 } 7824 7825 if (ibm->flags.acpi_driver_registered) { 7826 dbg_printk(TPACPI_DBG_EXIT, 7827 "%s: acpi_bus_unregister_driver\n", ibm->name); 7828 BUG_ON(!ibm->acpi); 7829 acpi_bus_unregister_driver(ibm->acpi->driver); 7830 kfree(ibm->acpi->driver); 7831 ibm->acpi->driver = NULL; 7832 ibm->flags.acpi_driver_registered = 0; 7833 } 7834 7835 if (ibm->flags.init_called && ibm->exit) { 7836 ibm->exit(); 7837 ibm->flags.init_called = 0; 7838 } 7839 7840 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 7841} 7842 7843static int __init ibm_init(struct ibm_init_struct *iibm) 7844{ 7845 int ret; 7846 struct ibm_struct *ibm = iibm->data; 7847 struct proc_dir_entry *entry; 7848 7849 BUG_ON(ibm == NULL); 7850 7851 INIT_LIST_HEAD(&ibm->all_drivers); 7852 7853 if (ibm->flags.experimental && !experimental) 7854 return 0; 7855 7856 dbg_printk(TPACPI_DBG_INIT, 7857 "probing for %s\n", ibm->name); 7858 7859 if (iibm->init) { 7860 ret = iibm->init(iibm); 7861 if (ret > 0) 7862 return 0; /* probe failed */ 7863 if (ret) 7864 return ret; 7865 7866 ibm->flags.init_called = 1; 7867 } 7868 7869 if (ibm->acpi) { 7870 if (ibm->acpi->hid) { 7871 ret = register_tpacpi_subdriver(ibm); 7872 if (ret) 7873 goto err_out; 7874 } 7875 7876 if (ibm->acpi->notify) { 7877 ret = setup_acpi_notify(ibm); 7878 if (ret == -ENODEV) { 7879 printk(TPACPI_NOTICE "disabling subdriver %s\n", 7880 ibm->name); 7881 ret = 0; 7882 goto err_out; 7883 } 7884 if (ret < 0) 7885 goto err_out; 7886 } 7887 } 7888 7889 dbg_printk(TPACPI_DBG_INIT, 7890 "%s installed\n", ibm->name); 7891 7892 if (ibm->read) { 7893 entry = create_proc_entry(ibm->name, 7894 S_IFREG | S_IRUGO | S_IWUSR, 7895 proc_dir); 7896 if (!entry) { 7897 printk(TPACPI_ERR "unable to create proc entry %s\n", 7898 ibm->name); 7899 ret = -ENODEV; 7900 goto err_out; 7901 } 7902 entry->data = ibm; 7903 entry->read_proc = &dispatch_procfs_read; 7904 if (ibm->write) 7905 entry->write_proc = &dispatch_procfs_write; 7906 ibm->flags.proc_created = 1; 7907 } 7908 7909 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 7910 7911 return 0; 7912 7913err_out: 7914 dbg_printk(TPACPI_DBG_INIT, 7915 "%s: at error exit path with result %d\n", 7916 ibm->name, ret); 7917 7918 ibm_exit(ibm); 7919 return (ret < 0)? ret : 0; 7920} 7921 7922/* Probing */ 7923 7924static bool __pure __init tpacpi_is_fw_digit(const char c) 7925{ 7926 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z'); 7927} 7928 7929/* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */ 7930static bool __pure __init tpacpi_is_valid_fw_id(const char* const s, 7931 const char t) 7932{ 7933 return s && strlen(s) >= 8 && 7934 tpacpi_is_fw_digit(s[0]) && 7935 tpacpi_is_fw_digit(s[1]) && 7936 s[2] == t && s[3] == 'T' && 7937 tpacpi_is_fw_digit(s[4]) && 7938 tpacpi_is_fw_digit(s[5]) && 7939 s[6] == 'W' && s[7] == 'W'; 7940} 7941 7942/* returns 0 - probe ok, or < 0 - probe error. 7943 * Probe ok doesn't mean thinkpad found. 7944 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 7945static int __must_check __init get_thinkpad_model_data( 7946 struct thinkpad_id_data *tp) 7947{ 7948 const struct dmi_device *dev = NULL; 7949 char ec_fw_string[18]; 7950 char const *s; 7951 7952 if (!tp) 7953 return -EINVAL; 7954 7955 memset(tp, 0, sizeof(*tp)); 7956 7957 if (dmi_name_in_vendors("IBM")) 7958 tp->vendor = PCI_VENDOR_ID_IBM; 7959 else if (dmi_name_in_vendors("LENOVO")) 7960 tp->vendor = PCI_VENDOR_ID_LENOVO; 7961 else 7962 return 0; 7963 7964 s = dmi_get_system_info(DMI_BIOS_VERSION); 7965 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 7966 if (s && !tp->bios_version_str) 7967 return -ENOMEM; 7968 7969 /* Really ancient ThinkPad 240X will fail this, which is fine */ 7970 if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E')) 7971 return 0; 7972 7973 tp->bios_model = tp->bios_version_str[0] 7974 | (tp->bios_version_str[1] << 8); 7975 tp->bios_release = (tp->bios_version_str[4] << 8) 7976 | tp->bios_version_str[5]; 7977 7978 /* 7979 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 7980 * X32 or newer, all Z series; Some models must have an 7981 * up-to-date BIOS or they will not be detected. 7982 * 7983 * See http://thinkwiki.org/wiki/List_of_DMI_IDs 7984 */ 7985 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 7986 if (sscanf(dev->name, 7987 "IBM ThinkPad Embedded Controller -[%17c", 7988 ec_fw_string) == 1) { 7989 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 7990 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 7991 7992 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 7993 if (!tp->ec_version_str) 7994 return -ENOMEM; 7995 7996 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) { 7997 tp->ec_model = ec_fw_string[0] 7998 | (ec_fw_string[1] << 8); 7999 tp->ec_release = (ec_fw_string[4] << 8) 8000 | ec_fw_string[5]; 8001 } else { 8002 printk(TPACPI_NOTICE 8003 "ThinkPad firmware release %s " 8004 "doesn't match the known patterns\n", 8005 ec_fw_string); 8006 printk(TPACPI_NOTICE 8007 "please report this to %s\n", 8008 TPACPI_MAIL); 8009 } 8010 break; 8011 } 8012 } 8013 8014 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 8015 if (s && !strnicmp(s, "ThinkPad", 8)) { 8016 tp->model_str = kstrdup(s, GFP_KERNEL); 8017 if (!tp->model_str) 8018 return -ENOMEM; 8019 } 8020 8021 s = dmi_get_system_info(DMI_PRODUCT_NAME); 8022 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 8023 if (s && !tp->nummodel_str) 8024 return -ENOMEM; 8025 8026 return 0; 8027} 8028 8029static int __init probe_for_thinkpad(void) 8030{ 8031 int is_thinkpad; 8032 8033 if (acpi_disabled) 8034 return -ENODEV; 8035 8036 /* 8037 * Non-ancient models have better DMI tagging, but very old models 8038 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 8039 */ 8040 is_thinkpad = (thinkpad_id.model_str != NULL) || 8041 (thinkpad_id.ec_model != 0) || 8042 tpacpi_is_fw_known(); 8043 8044 /* ec is required because many other handles are relative to it */ 8045 TPACPI_ACPIHANDLE_INIT(ec); 8046 if (!ec_handle) { 8047 if (is_thinkpad) 8048 printk(TPACPI_ERR 8049 "Not yet supported ThinkPad detected!\n"); 8050 return -ENODEV; 8051 } 8052 8053 if (!is_thinkpad && !force_load) 8054 return -ENODEV; 8055 8056 return 0; 8057} 8058 8059 8060/* Module init, exit, parameters */ 8061 8062static struct ibm_init_struct ibms_init[] __initdata = { 8063 { 8064 .init = thinkpad_acpi_driver_init, 8065 .data = &thinkpad_acpi_driver_data, 8066 }, 8067 { 8068 .init = hotkey_init, 8069 .data = &hotkey_driver_data, 8070 }, 8071 { 8072 .init = bluetooth_init, 8073 .data = &bluetooth_driver_data, 8074 }, 8075 { 8076 .init = wan_init, 8077 .data = &wan_driver_data, 8078 }, 8079 { 8080 .init = uwb_init, 8081 .data = &uwb_driver_data, 8082 }, 8083#ifdef CONFIG_THINKPAD_ACPI_VIDEO 8084 { 8085 .init = video_init, 8086 .data = &video_driver_data, 8087 }, 8088#endif 8089 { 8090 .init = light_init, 8091 .data = &light_driver_data, 8092 }, 8093 { 8094 .init = cmos_init, 8095 .data = &cmos_driver_data, 8096 }, 8097 { 8098 .init = led_init, 8099 .data = &led_driver_data, 8100 }, 8101 { 8102 .init = beep_init, 8103 .data = &beep_driver_data, 8104 }, 8105 { 8106 .init = thermal_init, 8107 .data = &thermal_driver_data, 8108 }, 8109 { 8110 .data = &ecdump_driver_data, 8111 }, 8112 { 8113 .init = brightness_init, 8114 .data = &brightness_driver_data, 8115 }, 8116 { 8117 .data = &volume_driver_data, 8118 }, 8119 { 8120 .init = fan_init, 8121 .data = &fan_driver_data, 8122 }, 8123}; 8124 8125static int __init set_ibm_param(const char *val, struct kernel_param *kp) 8126{ 8127 unsigned int i; 8128 struct ibm_struct *ibm; 8129 8130 if (!kp || !kp->name || !val) 8131 return -EINVAL; 8132 8133 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 8134 ibm = ibms_init[i].data; 8135 WARN_ON(ibm == NULL); 8136 8137 if (!ibm || !ibm->name) 8138 continue; 8139 8140 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 8141 if (strlen(val) > sizeof(ibms_init[i].param) - 2) 8142 return -ENOSPC; 8143 strcpy(ibms_init[i].param, val); 8144 strcat(ibms_init[i].param, ","); 8145 return 0; 8146 } 8147 } 8148 8149 return -EINVAL; 8150} 8151 8152module_param(experimental, int, 0444); 8153MODULE_PARM_DESC(experimental, 8154 "Enables experimental features when non-zero"); 8155 8156module_param_named(debug, dbg_level, uint, 0); 8157MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 8158 8159module_param(force_load, bool, 0444); 8160MODULE_PARM_DESC(force_load, 8161 "Attempts to load the driver even on a " 8162 "mis-identified ThinkPad when true"); 8163 8164module_param_named(fan_control, fan_control_allowed, bool, 0444); 8165MODULE_PARM_DESC(fan_control, 8166 "Enables setting fan parameters features when true"); 8167 8168module_param_named(brightness_mode, brightness_mode, uint, 0444); 8169MODULE_PARM_DESC(brightness_mode, 8170 "Selects brightness control strategy: " 8171 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 8172 8173module_param(brightness_enable, uint, 0444); 8174MODULE_PARM_DESC(brightness_enable, 8175 "Enables backlight control when 1, disables when 0"); 8176 8177module_param(hotkey_report_mode, uint, 0444); 8178MODULE_PARM_DESC(hotkey_report_mode, 8179 "used for backwards compatibility with userspace, " 8180 "see documentation"); 8181 8182#define TPACPI_PARAM(feature) \ 8183 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 8184 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \ 8185 "at module load, see documentation") 8186 8187TPACPI_PARAM(hotkey); 8188TPACPI_PARAM(bluetooth); 8189TPACPI_PARAM(video); 8190TPACPI_PARAM(light); 8191TPACPI_PARAM(cmos); 8192TPACPI_PARAM(led); 8193TPACPI_PARAM(beep); 8194TPACPI_PARAM(ecdump); 8195TPACPI_PARAM(brightness); 8196TPACPI_PARAM(volume); 8197TPACPI_PARAM(fan); 8198 8199#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 8200module_param(dbg_wlswemul, uint, 0444); 8201MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 8202module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 8203MODULE_PARM_DESC(wlsw_state, 8204 "Initial state of the emulated WLSW switch"); 8205 8206module_param(dbg_bluetoothemul, uint, 0444); 8207MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 8208module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 8209MODULE_PARM_DESC(bluetooth_state, 8210 "Initial state of the emulated bluetooth switch"); 8211 8212module_param(dbg_wwanemul, uint, 0444); 8213MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 8214module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 8215MODULE_PARM_DESC(wwan_state, 8216 "Initial state of the emulated WWAN switch"); 8217 8218module_param(dbg_uwbemul, uint, 0444); 8219MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 8220module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 8221MODULE_PARM_DESC(uwb_state, 8222 "Initial state of the emulated UWB switch"); 8223#endif 8224 8225static void thinkpad_acpi_module_exit(void) 8226{ 8227 struct ibm_struct *ibm, *itmp; 8228 8229 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 8230 8231 list_for_each_entry_safe_reverse(ibm, itmp, 8232 &tpacpi_all_drivers, 8233 all_drivers) { 8234 ibm_exit(ibm); 8235 } 8236 8237 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 8238 8239 if (tpacpi_inputdev) { 8240 if (tp_features.input_device_registered) 8241 input_unregister_device(tpacpi_inputdev); 8242 else 8243 input_free_device(tpacpi_inputdev); 8244 } 8245 8246 if (tpacpi_hwmon) 8247 hwmon_device_unregister(tpacpi_hwmon); 8248 8249 if (tp_features.sensors_pdev_attrs_registered) 8250 device_remove_file(&tpacpi_sensors_pdev->dev, 8251 &dev_attr_thinkpad_acpi_pdev_name); 8252 if (tpacpi_sensors_pdev) 8253 platform_device_unregister(tpacpi_sensors_pdev); 8254 if (tpacpi_pdev) 8255 platform_device_unregister(tpacpi_pdev); 8256 8257 if (tp_features.sensors_pdrv_attrs_registered) 8258 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); 8259 if (tp_features.platform_drv_attrs_registered) 8260 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); 8261 8262 if (tp_features.sensors_pdrv_registered) 8263 platform_driver_unregister(&tpacpi_hwmon_pdriver); 8264 8265 if (tp_features.platform_drv_registered) 8266 platform_driver_unregister(&tpacpi_pdriver); 8267 8268 if (proc_dir) 8269 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 8270 8271 if (tpacpi_wq) 8272 destroy_workqueue(tpacpi_wq); 8273 8274 kfree(thinkpad_id.bios_version_str); 8275 kfree(thinkpad_id.ec_version_str); 8276 kfree(thinkpad_id.model_str); 8277} 8278 8279 8280static int __init thinkpad_acpi_module_init(void) 8281{ 8282 int ret, i; 8283 8284 tpacpi_lifecycle = TPACPI_LIFE_INIT; 8285 8286 /* Parameter checking */ 8287 if (hotkey_report_mode > 2) 8288 return -EINVAL; 8289 8290 /* Driver-level probe */ 8291 8292 ret = get_thinkpad_model_data(&thinkpad_id); 8293 if (ret) { 8294 printk(TPACPI_ERR 8295 "unable to get DMI data: %d\n", ret); 8296 thinkpad_acpi_module_exit(); 8297 return ret; 8298 } 8299 ret = probe_for_thinkpad(); 8300 if (ret) { 8301 thinkpad_acpi_module_exit(); 8302 return ret; 8303 } 8304 8305 /* Driver initialization */ 8306 8307 TPACPI_ACPIHANDLE_INIT(ecrd); 8308 TPACPI_ACPIHANDLE_INIT(ecwr); 8309 8310 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 8311 if (!tpacpi_wq) { 8312 thinkpad_acpi_module_exit(); 8313 return -ENOMEM; 8314 } 8315 8316 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 8317 if (!proc_dir) { 8318 printk(TPACPI_ERR 8319 "unable to create proc dir " TPACPI_PROC_DIR); 8320 thinkpad_acpi_module_exit(); 8321 return -ENODEV; 8322 } 8323 8324 ret = platform_driver_register(&tpacpi_pdriver); 8325 if (ret) { 8326 printk(TPACPI_ERR 8327 "unable to register main platform driver\n"); 8328 thinkpad_acpi_module_exit(); 8329 return ret; 8330 } 8331 tp_features.platform_drv_registered = 1; 8332 8333 ret = platform_driver_register(&tpacpi_hwmon_pdriver); 8334 if (ret) { 8335 printk(TPACPI_ERR 8336 "unable to register hwmon platform driver\n"); 8337 thinkpad_acpi_module_exit(); 8338 return ret; 8339 } 8340 tp_features.sensors_pdrv_registered = 1; 8341 8342 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); 8343 if (!ret) { 8344 tp_features.platform_drv_attrs_registered = 1; 8345 ret = tpacpi_create_driver_attributes( 8346 &tpacpi_hwmon_pdriver.driver); 8347 } 8348 if (ret) { 8349 printk(TPACPI_ERR 8350 "unable to create sysfs driver attributes\n"); 8351 thinkpad_acpi_module_exit(); 8352 return ret; 8353 } 8354 tp_features.sensors_pdrv_attrs_registered = 1; 8355 8356 8357 /* Device initialization */ 8358 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, 8359 NULL, 0); 8360 if (IS_ERR(tpacpi_pdev)) { 8361 ret = PTR_ERR(tpacpi_pdev); 8362 tpacpi_pdev = NULL; 8363 printk(TPACPI_ERR "unable to register platform device\n"); 8364 thinkpad_acpi_module_exit(); 8365 return ret; 8366 } 8367 tpacpi_sensors_pdev = platform_device_register_simple( 8368 TPACPI_HWMON_DRVR_NAME, 8369 -1, NULL, 0); 8370 if (IS_ERR(tpacpi_sensors_pdev)) { 8371 ret = PTR_ERR(tpacpi_sensors_pdev); 8372 tpacpi_sensors_pdev = NULL; 8373 printk(TPACPI_ERR 8374 "unable to register hwmon platform device\n"); 8375 thinkpad_acpi_module_exit(); 8376 return ret; 8377 } 8378 ret = device_create_file(&tpacpi_sensors_pdev->dev, 8379 &dev_attr_thinkpad_acpi_pdev_name); 8380 if (ret) { 8381 printk(TPACPI_ERR 8382 "unable to create sysfs hwmon device attributes\n"); 8383 thinkpad_acpi_module_exit(); 8384 return ret; 8385 } 8386 tp_features.sensors_pdev_attrs_registered = 1; 8387 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev); 8388 if (IS_ERR(tpacpi_hwmon)) { 8389 ret = PTR_ERR(tpacpi_hwmon); 8390 tpacpi_hwmon = NULL; 8391 printk(TPACPI_ERR "unable to register hwmon device\n"); 8392 thinkpad_acpi_module_exit(); 8393 return ret; 8394 } 8395 mutex_init(&tpacpi_inputdev_send_mutex); 8396 tpacpi_inputdev = input_allocate_device(); 8397 if (!tpacpi_inputdev) { 8398 printk(TPACPI_ERR "unable to allocate input device\n"); 8399 thinkpad_acpi_module_exit(); 8400 return -ENOMEM; 8401 } else { 8402 /* Prepare input device, but don't register */ 8403 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 8404 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 8405 tpacpi_inputdev->id.bustype = BUS_HOST; 8406 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ? 8407 thinkpad_id.vendor : 8408 PCI_VENDOR_ID_IBM; 8409 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 8410 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 8411 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 8412 } 8413 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 8414 ret = ibm_init(&ibms_init[i]); 8415 if (ret >= 0 && *ibms_init[i].param) 8416 ret = ibms_init[i].data->write(ibms_init[i].param); 8417 if (ret < 0) { 8418 thinkpad_acpi_module_exit(); 8419 return ret; 8420 } 8421 } 8422 ret = input_register_device(tpacpi_inputdev); 8423 if (ret < 0) { 8424 printk(TPACPI_ERR "unable to register input device\n"); 8425 thinkpad_acpi_module_exit(); 8426 return ret; 8427 } else { 8428 tp_features.input_device_registered = 1; 8429 } 8430 8431 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 8432 return 0; 8433} 8434 8435MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 8436 8437/* 8438 * This will autoload the driver in almost every ThinkPad 8439 * in widespread use. 8440 * 8441 * Only _VERY_ old models, like the 240, 240x and 570 lack 8442 * the HKEY event interface. 8443 */ 8444MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 8445 8446/* 8447 * DMI matching for module autoloading 8448 * 8449 * See http://thinkwiki.org/wiki/List_of_DMI_IDs 8450 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 8451 * 8452 * Only models listed in thinkwiki will be supported, so add yours 8453 * if it is not there yet. 8454 */ 8455#define IBM_BIOS_MODULE_ALIAS(__type) \ 8456 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 8457 8458/* Ancient thinkpad BIOSes have to be identified by 8459 * BIOS type or model number, and there are far less 8460 * BIOS types than model numbers... */ 8461IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 8462 8463MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 8464MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 8465MODULE_DESCRIPTION(TPACPI_DESC); 8466MODULE_VERSION(TPACPI_VERSION); 8467MODULE_LICENSE("GPL"); 8468 8469module_init(thinkpad_acpi_module_init); 8470module_exit(thinkpad_acpi_module_exit); 8471