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thinkpad-acpi: Fix procfs hotkey reset command
[linux-block.git] / drivers / platform / x86 / thinkpad_acpi.c
CommitLineData
1da177e4 1/*
643f12db 2 * thinkpad_acpi.c - ThinkPad ACPI Extras
1da177e4
LT		 3 *
4 *
78f81cc4 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
1c762ca4 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
1da177e4
LT		 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
a62bc916
HMH		 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
78f81cc4
BD		 22 */
23
b57f7e7b 24#define TPACPI_VERSION "0.23"
f21179a4 25#define TPACPI_SYSFS_VERSION 0x020400
78f81cc4
BD		 26
27/*
1da177e4 28 * Changelog:
4b45cc07
HMH		 29 * 2007-10-20 changelog trimmed down
30 *
643f12db
HMH		 31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
32 * drivers/misc.
f9ff43a6
HMH		 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.
837ca6dd 37 *
78f81cc4
BD		 38 * 2005-03-17 0.11 support for 600e, 770x
39 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
4b45cc07
HMH		 40 *
41 * 2005-01-16 0.9 use MODULE_VERSION
78f81cc4
BD		 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>
1da177e4
LT		 48 */
49
0c78039f
HMH		 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>
73a94d86 57#include <linux/sched.h>
0c78039f
HMH		 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>
4fa6811b 71#include <linux/leds.h>
0e74dc26 72#include <linux/rfkill.h>
0c78039f
HMH		 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>
0c78039f
HMH		 80
81#include <linux/pci_ids.h>
82
0c78039f
HMH		 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
4fa6811b
HMH		 90#define TP_CMOS_THINKLIGHT_ON 12
91#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 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
b21a15f6 119/* ACPI HIDs */
e0c7dfe7 120#define TPACPI_ACPI_HKEY_HID "IBM0068"
b21a15f6
HMH		 121
122/* Input IDs */
123#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
124#define TPACPI_HKEY_INPUT_VERSION 0x4101
125
153f8220
HMH		 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};
b21a15f6
HMH		 147
148/****************************************************************************
149 * Main driver
150 */
151
e0c7dfe7
HMH		 152#define TPACPI_NAME "thinkpad"
153#define TPACPI_DESC "ThinkPad ACPI Extras"
154#define TPACPI_FILE TPACPI_NAME "_acpi"
155#define TPACPI_URL "http://ibm-acpi.sf.net/"
156#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 157
e0c7dfe7
HMH		 158#define TPACPI_PROC_DIR "ibm"
159#define TPACPI_ACPI_EVENT_PREFIX "ibm"
160#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 161#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 162#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 163
95e57ab2 164#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 165#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 166
e0c7dfe7 167#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 168
7ff8d62f 169/* printk headers */
e0c7dfe7 170#define TPACPI_LOG TPACPI_FILE ": "
7ff8d62f
HMH		 171#define TPACPI_EMERG KERN_EMERG TPACPI_LOG
172#define TPACPI_ALERT KERN_ALERT TPACPI_LOG
173#define TPACPI_CRIT KERN_CRIT TPACPI_LOG
174#define TPACPI_ERR KERN_ERR TPACPI_LOG
175#define TPACPI_WARN KERN_WARNING TPACPI_LOG
176#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
177#define TPACPI_INFO KERN_INFO TPACPI_LOG
178#define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
179
180/* Debugging printk groups */
0c78039f 181#define TPACPI_DBG_ALL 0xffff
73a94d86 182#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 183#define TPACPI_DBG_INIT 0x0001
184#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 185#define TPACPI_DBG_RFKILL 0x0004
56e2c200 186#define TPACPI_DBG_HKEY 0x0008
74a60c0f 187#define TPACPI_DBG_FAN 0x0010
0e501834 188#define TPACPI_DBG_BRGHT 0x0020
0c78039f 189
35ff8b9f
HMH		 190#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
191#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
192#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 193
0c78039f
HMH		 194
195/****************************************************************************
b21a15f6 196 * Driver-wide structs and misc. variables
0c78039f
HMH		 197 */
198
199struct ibm_struct;
200
201struct tp_acpi_drv_struct {
202 const struct acpi_device_id *hid;
203 struct acpi_driver *driver;
204
205 void (*notify) (struct ibm_struct *, u32);
206 acpi_handle *handle;
207 u32 type;
208 struct acpi_device *device;
209};
210
211struct ibm_struct {
212 char *name;
213
214 int (*read) (char *);
215 int (*write) (char *);
216 void (*exit) (void);
217 void (*resume) (void);
083f1760 218 void (*suspend) (pm_message_t state);
90d9d3c7 219 void (*shutdown) (void);
0c78039f
HMH		 220
221 struct list_head all_drivers;
222
223 struct tp_acpi_drv_struct *acpi;
224
225 struct {
226 u8 acpi_driver_registered:1;
227 u8 acpi_notify_installed:1;
228 u8 proc_created:1;
229 u8 init_called:1;
230 u8 experimental:1;
231 } flags;
232};
233
234struct ibm_init_struct {
235 char param[32];
236
237 int (*init) (struct ibm_init_struct *);
238 struct ibm_struct *data;
239};
240
241static struct {
0c78039f
HMH		 242 u32 bluetooth:1;
243 u32 hotkey:1;
244 u32 hotkey_mask:1;
245 u32 hotkey_wlsw:1;
6c231bd5 246 u32 hotkey_tablet:1;
0c78039f
HMH		 247 u32 light:1;
248 u32 light_status:1;
249 u32 bright_16levels:1;
b5972796 250 u32 bright_acpimode:1;
0c78039f 251 u32 wan:1;
0045c0aa 252 u32 uwb:1;
0c78039f 253 u32 fan_ctrl_status_undef:1;
d7377247 254 u32 second_fan:1;
60201732 255 u32 beep_needs_two_args:1;
0c78039f
HMH		 256 u32 input_device_registered:1;
257 u32 platform_drv_registered:1;
258 u32 platform_drv_attrs_registered:1;
259 u32 sensors_pdrv_registered:1;
260 u32 sensors_pdrv_attrs_registered:1;
261 u32 sensors_pdev_attrs_registered:1;
262 u32 hotkey_poll_active:1;
263} tp_features;
264
92889022
HMH		 265static struct {
266 u16 hotkey_mask_ff:1;
267} tp_warned;
268
0c78039f
HMH		 269struct thinkpad_id_data {
270 unsigned int vendor; /* ThinkPad vendor:
271 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
272
273 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
274 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
275
050df107 276 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
0c78039f 277 u16 ec_model;
050df107
HMH		 278 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
279 u16 ec_release;
0c78039f 280
8c74adbc
HMH		 281 char *model_str; /* ThinkPad T43 */
282 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 283};
0c78039f
HMH		 284static struct thinkpad_id_data thinkpad_id;
285
8fef502e
HMH		 286static enum {
287 TPACPI_LIFE_INIT = 0,
288 TPACPI_LIFE_RUNNING,
289 TPACPI_LIFE_EXITING,
290} tpacpi_lifecycle;
291
b21a15f6
HMH		 292static int experimental;
293static u32 dbg_level;
294
e0e3c061
HMH		 295static struct workqueue_struct *tpacpi_wq;
296
75bd3bf2
HMH		 297enum led_status_t {
298 TPACPI_LED_OFF = 0,
299 TPACPI_LED_ON,
300 TPACPI_LED_BLINK,
301};
302
4fa6811b
HMH		 303/* Special LED class that can defer work */
304struct tpacpi_led_classdev {
305 struct led_classdev led_classdev;
306 struct work_struct work;
75bd3bf2 307 enum led_status_t new_state;
af116101 308 unsigned int led;
4fa6811b
HMH		 309};
310
a73f3091
HMH		 311#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
312static int dbg_wlswemul;
313static int tpacpi_wlsw_emulstate;
314static int dbg_bluetoothemul;
315static int tpacpi_bluetooth_emulstate;
316static int dbg_wwanemul;
317static int tpacpi_wwan_emulstate;
0045c0aa
HMH		 318static int dbg_uwbemul;
319static int tpacpi_uwb_emulstate;
a73f3091
HMH		 320#endif
321
322
3dcc2c3b
HMH		 323/*************************************************************************
324 * Debugging helpers
325 */
326
327#define dbg_printk(a_dbg_level, format, arg...) \
328 do { if (dbg_level & (a_dbg_level)) \
329 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
330 } while (0)
331
332#ifdef CONFIG_THINKPAD_ACPI_DEBUG
333#define vdbg_printk dbg_printk
334static const char *str_supported(int is_supported);
335#else
336#define vdbg_printk(a_dbg_level, format, arg...) \
337 do { } while (0)
338#endif
339
73a94d86
HMH		 340static void tpacpi_log_usertask(const char * const what)
341{
342 printk(TPACPI_DEBUG "%s: access by process with PID %d\n",
343 what, task_tgid_vnr(current));
344}
345
346#define tpacpi_disclose_usertask(what, format, arg...) \
347 do { \
348 if (unlikely( \
349 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
350 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
351 printk(TPACPI_DEBUG "%s: PID %d: " format, \
352 what, task_tgid_vnr(current), ## arg); \
353 } \
354 } while (0)
3dcc2c3b 355
7d95a3d5
HMH		 356/*
357 * Quirk handling helpers
358 *
359 * ThinkPad IDs and versions seen in the field so far
360 * are two-characters from the set [0-9A-Z], i.e. base 36.
361 *
362 * We use values well outside that range as specials.
363 */
364
365#define TPACPI_MATCH_ANY 0xffffU
366#define TPACPI_MATCH_UNKNOWN 0U
367
368/* TPID('1', 'Y') == 0x5931 */
369#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
370
371#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
372 { .vendor = PCI_VENDOR_ID_IBM, \
373 .bios = TPID(__id1, __id2), \
374 .ec = TPACPI_MATCH_ANY, \
375 .quirks = (__quirk) }
376
377#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
378 { .vendor = PCI_VENDOR_ID_LENOVO, \
379 .bios = TPID(__id1, __id2), \
380 .ec = TPACPI_MATCH_ANY, \
381 .quirks = (__quirk) }
382
383struct tpacpi_quirk {
384 unsigned int vendor;
385 u16 bios;
386 u16 ec;
387 unsigned long quirks;
388};
389
390/**
391 * tpacpi_check_quirks() - search BIOS/EC version on a list
392 * @qlist: array of &struct tpacpi_quirk
393 * @qlist_size: number of elements in @qlist
394 *
395 * Iterates over a quirks list until one is found that matches the
396 * ThinkPad's vendor, BIOS and EC model.
397 *
398 * Returns 0 if nothing matches, otherwise returns the quirks field of
399 * the matching &struct tpacpi_quirk entry.
400 *
401 * The match criteria is: vendor, ec and bios much match.
402 */
403static unsigned long __init tpacpi_check_quirks(
404 const struct tpacpi_quirk *qlist,
405 unsigned int qlist_size)
406{
407 while (qlist_size) {
408 if ((qlist->vendor == thinkpad_id.vendor ||
409 qlist->vendor == TPACPI_MATCH_ANY) &&
410 (qlist->bios == thinkpad_id.bios_model ||
411 qlist->bios == TPACPI_MATCH_ANY) &&
412 (qlist->ec == thinkpad_id.ec_model ||
413 qlist->ec == TPACPI_MATCH_ANY))
414 return qlist->quirks;
415
416 qlist_size--;
417 qlist++;
418 }
419 return 0;
420}
421
422
56b6aeb0
HMH		 423/****************************************************************************
424 ****************************************************************************
425 *
426 * ACPI Helpers and device model
427 *
428 ****************************************************************************
429 ****************************************************************************/
430
431/*************************************************************************
432 * ACPI basic handles
433 */
1da177e4 434
94954cc6 435static acpi_handle root_handle;
1da177e4 436
e0c7dfe7 437#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4
LT		 438 static acpi_handle object##_handle; \
439 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 440 static char *object##_path; \
1da177e4
LT		 441 static char *object##_paths[] = { paths }
442
e0c7dfe7 443TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
78f81cc4
BD		 444 "\\_SB.PCI.ISA.EC", /* 570 */
445 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
446 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
447 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
448 "\\_SB.PCI0.ICH3.EC0", /* R31 */
449 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 450 );
78f81cc4 451
e0c7dfe7
HMH		 452TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
453TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 454
35ff8b9f
HMH		 455TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
456 /* T4x, X31, X40 */
78f81cc4
BD		 457 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
458 "\\CMS", /* R40, R40e */
56b6aeb0 459 ); /* all others */
78f81cc4 460
e0c7dfe7 461TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 462 "^HKEY", /* R30, R31 */
463 "HKEY", /* all others */
56b6aeb0 464 ); /* 570 */
78f81cc4 465
d7c1d17d
HMH		 466TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
467 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
468 "\\_SB.PCI0.VID0", /* 770e */
469 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
470 "\\_SB.PCI0.AGP.VID", /* all others */
471 ); /* R30, R31 */
472
78f81cc4 473
56b6aeb0
HMH		 474/*************************************************************************
475 * ACPI helpers
a8b7a662
HMH		 476 */
477
1da177e4
LT		 478static int acpi_evalf(acpi_handle handle,
479 void *res, char *method, char *fmt, ...)
480{
481 char *fmt0 = fmt;
78f81cc4 482 struct acpi_object_list params;
e0c7dfe7 483 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 484 struct acpi_buffer result, *resultp;
485 union acpi_object out_obj;
486 acpi_status status;
487 va_list ap;
488 char res_type;
489 int success;
490 int quiet;
1da177e4
LT		 491
492 if (!*fmt) {
e0c7dfe7 493 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
1da177e4
LT		 494 return 0;
495 }
496
497 if (*fmt == 'q') {
498 quiet = 1;
499 fmt++;
500 } else
501 quiet = 0;
502
503 res_type = *(fmt++);
504
505 params.count = 0;
506 params.pointer = &in_objs[0];
507
508 va_start(ap, fmt);
509 while (*fmt) {
510 char c = *(fmt++);
511 switch (c) {
512 case 'd': /* int */
513 in_objs[params.count].integer.value = va_arg(ap, int);
514 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
515 break;
78f81cc4 516 /* add more types as needed */
1da177e4 517 default:
e0c7dfe7 518 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 519 "with invalid format character '%c'\n", c);
520 return 0;
521 }
522 }
523 va_end(ap);
524
78f81cc4
BD		 525 if (res_type != 'v') {
526 result.length = sizeof(out_obj);
527 result.pointer = &out_obj;
528 resultp = &result;
529 } else
530 resultp = NULL;
1da177e4 531
78f81cc4 532 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 533
534 switch (res_type) {
78f81cc4 535 case 'd': /* int */
1da177e4
LT		 536 if (res)
537 *(int *)res = out_obj.integer.value;
538 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
539 break;
78f81cc4 540 case 'v': /* void */
1da177e4
LT		 541 success = status == AE_OK;
542 break;
78f81cc4 543 /* add more types as needed */
1da177e4 544 default:
e0c7dfe7 545 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 546 "with invalid format character '%c'\n", res_type);
547 return 0;
548 }
549
56b6aeb0 550 if (!success && !quiet)
e0c7dfe7 551 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
56b6aeb0
HMH		 552 method, fmt0, status);
553
554 return success;
555}
556
35ff8b9f 557static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 558{
559 int v;
560
561 if (ecrd_handle) {
562 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
563 return 0;
564 *p = v;
565 } else {
566 if (ec_read(i, p) < 0)
567 return 0;
568 }
569
570 return 1;
571}
572
573static int acpi_ec_write(int i, u8 v)
574{
575 if (ecwr_handle) {
576 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
577 return 0;
578 } else {
579 if (ec_write(i, v) < 0)
580 return 0;
581 }
582
583 return 1;
584}
585
c9bea99c
HMH		 586static int issue_thinkpad_cmos_command(int cmos_cmd)
587{
588 if (!cmos_handle)
589 return -ENXIO;
590
591 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
592 return -EIO;
593
594 return 0;
595}
596
56b6aeb0
HMH		 597/*************************************************************************
598 * ACPI device model
599 */
600
35ff8b9f
HMH		 601#define TPACPI_ACPIHANDLE_INIT(object) \
602 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
f74a27d4
HMH		 603 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
604
8d376cd6 605static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 606 acpi_handle *handle, acpi_handle parent,
607 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 608{
609 int i;
610 acpi_status status;
611
5ae930e6
HMH		 612 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
613 name);
614
56b6aeb0
HMH		 615 for (i = 0; i < num_paths; i++) {
616 status = acpi_get_handle(parent, paths[i], handle);
617 if (ACPI_SUCCESS(status)) {
618 *path = paths[i];
5ae930e6
HMH		 619 dbg_printk(TPACPI_DBG_INIT,
620 "Found ACPI handle %s for %s\n",
621 *path, name);
56b6aeb0
HMH		 622 return;
623 }
624 }
625
5ae930e6
HMH		 626 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
627 name);
56b6aeb0
HMH		 628 *handle = NULL;
629}
630
8d376cd6 631static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 632{
633 struct ibm_struct *ibm = data;
634
8fef502e
HMH		 635 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
636 return;
637
8d376cd6 638 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 639 return;
640
8d376cd6 641 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 642}
643
8d376cd6 644static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 645{
646 acpi_status status;
5ae930e6 647 int rc;
56b6aeb0 648
8d376cd6
HMH		 649 BUG_ON(!ibm->acpi);
650
651 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 652 return 0;
653
5ae930e6 654 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 655 "setting up ACPI notify for %s\n", ibm->name);
656
5ae930e6
HMH		 657 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
658 if (rc < 0) {
e0c7dfe7 659 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
5ae930e6 660 ibm->name, rc);
56b6aeb0
HMH		 661 return -ENODEV;
662 }
663
db89b4f0 664 ibm->acpi->device->driver_data = ibm;
8d376cd6 665 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 666 TPACPI_ACPI_EVENT_PREFIX,
643f12db 667 ibm->name);
56b6aeb0 668
8d376cd6
HMH		 669 status = acpi_install_notify_handler(*ibm->acpi->handle,
670 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 671 if (ACPI_FAILURE(status)) {
672 if (status == AE_ALREADY_EXISTS) {
35ff8b9f
HMH		 673 printk(TPACPI_NOTICE
674 "another device driver is already "
675 "handling %s events\n", ibm->name);
56b6aeb0 676 } else {
35ff8b9f
HMH		 677 printk(TPACPI_ERR
678 "acpi_install_notify_handler(%s) failed: %d\n",
679 ibm->name, status);
56b6aeb0
HMH		 680 }
681 return -ENODEV;
682 }
8d376cd6 683 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 684 return 0;
685}
686
8d376cd6 687static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 688{
689 return 0;
690}
691
6700121b 692static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 693{
5ae930e6 694 int rc;
56b6aeb0 695
fe08bc4b
HMH		 696 dbg_printk(TPACPI_DBG_INIT,
697 "registering %s as an ACPI driver\n", ibm->name);
698
8d376cd6
HMH		 699 BUG_ON(!ibm->acpi);
700
701 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
702 if (!ibm->acpi->driver) {
4f778b92
MK		 703 printk(TPACPI_ERR
704 "failed to allocate memory for ibm->acpi->driver\n");
5fba344c 705 return -ENOMEM;
56b6aeb0
HMH		 706 }
707
e0c7dfe7 708 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 709 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 710
8d376cd6 711 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 712
5ae930e6
HMH		 713 rc = acpi_bus_register_driver(ibm->acpi->driver);
714 if (rc < 0) {
e0c7dfe7 715 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 716 ibm->name, rc);
8d376cd6
HMH		 717 kfree(ibm->acpi->driver);
718 ibm->acpi->driver = NULL;
5ae930e6 719 } else if (!rc)
8d376cd6 720 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 721
5ae930e6 722 return rc;
56b6aeb0
HMH		 723}
724
725
726/****************************************************************************
727 ****************************************************************************
728 *
729 * Procfs Helpers
730 *
731 ****************************************************************************
732 ****************************************************************************/
733
8d376cd6
HMH		 734static int dispatch_procfs_read(char *page, char **start, off_t off,
735 int count, int *eof, void *data)
56b6aeb0
HMH		 736{
737 struct ibm_struct *ibm = data;
738 int len;
739
740 if (!ibm || !ibm->read)
741 return -EINVAL;
742
743 len = ibm->read(page);
744 if (len < 0)
745 return len;
746
747 if (len <= off + count)
748 *eof = 1;
749 *start = page + off;
750 len -= off;
751 if (len > count)
752 len = count;
753 if (len < 0)
754 len = 0;
755
756 return len;
757}
758
8d376cd6 759static int dispatch_procfs_write(struct file *file,
35ff8b9f 760 const char __user *userbuf,
8d376cd6 761 unsigned long count, void *data)
56b6aeb0
HMH		 762{
763 struct ibm_struct *ibm = data;
764 char *kernbuf;
765 int ret;
766
767 if (!ibm || !ibm->write)
768 return -EINVAL;
5b05d469
MB		 769 if (count > PAGE_SIZE - 2)
770 return -EINVAL;
56b6aeb0
HMH		 771
772 kernbuf = kmalloc(count + 2, GFP_KERNEL);
773 if (!kernbuf)
774 return -ENOMEM;
1da177e4 775
56b6aeb0
HMH		 776 if (copy_from_user(kernbuf, userbuf, count)) {
777 kfree(kernbuf);
778 return -EFAULT;
779 }
1da177e4 780
56b6aeb0
HMH		 781 kernbuf[count] = 0;
782 strcat(kernbuf, ",");
783 ret = ibm->write(kernbuf);
784 if (ret == 0)
785 ret = count;
1da177e4 786
56b6aeb0
HMH		 787 kfree(kernbuf);
788
789 return ret;
1da177e4
LT		 790}
791
792static char *next_cmd(char **cmds)
793{
794 char *start = *cmds;
795 char *end;
796
797 while ((end = strchr(start, ',')) && end == start)
798 start = end + 1;
799
800 if (!end)
801 return NULL;
802
803 *end = 0;
804 *cmds = end + 1;
805 return start;
806}
807
56b6aeb0 808
54ae1501
HMH		 809/****************************************************************************
810 ****************************************************************************
811 *
7f5d1cd6 812 * Device model: input, hwmon and platform
54ae1501
HMH		 813 *
814 ****************************************************************************
815 ****************************************************************************/
816
94954cc6 817static struct platform_device *tpacpi_pdev;
7fd40029 818static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 819static struct device *tpacpi_hwmon;
7f5d1cd6 820static struct input_dev *tpacpi_inputdev;
8523ed6f 821static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 822static LIST_HEAD(tpacpi_all_drivers);
e295e850 823
083f1760
HMH		 824static int tpacpi_suspend_handler(struct platform_device *pdev,
825 pm_message_t state)
826{
827 struct ibm_struct *ibm, *itmp;
828
829 list_for_each_entry_safe(ibm, itmp,
830 &tpacpi_all_drivers,
831 all_drivers) {
832 if (ibm->suspend)
833 (ibm->suspend)(state);
834 }
835
836 return 0;
837}
838
e295e850
HMH		 839static int tpacpi_resume_handler(struct platform_device *pdev)
840{
841 struct ibm_struct *ibm, *itmp;
842
843 list_for_each_entry_safe(ibm, itmp,
844 &tpacpi_all_drivers,
845 all_drivers) {
846 if (ibm->resume)
847 (ibm->resume)();
848 }
849
850 return 0;
851}
852
90d9d3c7
HMH		 853static void tpacpi_shutdown_handler(struct platform_device *pdev)
854{
855 struct ibm_struct *ibm, *itmp;
856
857 list_for_each_entry_safe(ibm, itmp,
858 &tpacpi_all_drivers,
859 all_drivers) {
860 if (ibm->shutdown)
861 (ibm->shutdown)();
862 }
863}
864
54ae1501
HMH		 865static struct platform_driver tpacpi_pdriver = {
866 .driver = {
e0c7dfe7 867 .name = TPACPI_DRVR_NAME,
54ae1501
HMH		 868 .owner = THIS_MODULE,
869 },
083f1760 870 .suspend = tpacpi_suspend_handler,
e295e850 871 .resume = tpacpi_resume_handler,
90d9d3c7 872 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 873};
874
7fd40029
HMH		 875static struct platform_driver tpacpi_hwmon_pdriver = {
876 .driver = {
e0c7dfe7 877 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 878 .owner = THIS_MODULE,
879 },
880};
54ae1501 881
176750d6 882/*************************************************************************
b21a15f6 883 * sysfs support helpers
176750d6
HMH		 884 */
885
b21a15f6
HMH		 886struct attribute_set {
887 unsigned int members, max_members;
888 struct attribute_group group;
176750d6
HMH		 889};
890
7252374a
HMH		 891struct attribute_set_obj {
892 struct attribute_set s;
893 struct attribute *a;
894} __attribute__((packed));
895
896static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 897 const char *name)
7252374a
HMH		 898{
899 struct attribute_set_obj *sobj;
900
901 if (max_members == 0)
902 return NULL;
903
904 /* Allocates space for implicit NULL at the end too */
905 sobj = kzalloc(sizeof(struct attribute_set_obj) +
906 max_members * sizeof(struct attribute *),
907 GFP_KERNEL);
908 if (!sobj)
909 return NULL;
910 sobj->s.max_members = max_members;
911 sobj->s.group.attrs = &sobj->a;
912 sobj->s.group.name = name;
913
914 return &sobj->s;
915}
916
f74a27d4
HMH		 917#define destroy_attr_set(_set) \
918 kfree(_set);
919
7252374a 920/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 921static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 922{
923 if (!s || !attr)
924 return -EINVAL;
925
926 if (s->members >= s->max_members)
927 return -ENOMEM;
928
929 s->group.attrs[s->members] = attr;
930 s->members++;
931
932 return 0;
933}
934
35ff8b9f 935static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 936 struct attribute **attr,
937 unsigned int count)
938{
939 int i, res;
940
941 for (i = 0; i < count; i++) {
942 res = add_to_attr_set(s, attr[i]);
943 if (res)
944 return res;
945 }
946
947 return 0;
948}
949
35ff8b9f 950static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 951{
952 sysfs_remove_group(kobj, &s->group);
953 destroy_attr_set(s);
954}
955
f74a27d4
HMH		 956#define register_attr_set_with_sysfs(_attr_set, _kobj) \
957 sysfs_create_group(_kobj, &_attr_set->group)
958
7252374a
HMH		 959static int parse_strtoul(const char *buf,
960 unsigned long max, unsigned long *value)
961{
962 char *endp;
963
32afbf07
HMH		 964 while (*buf && isspace(*buf))
965 buf++;
7252374a
HMH		 966 *value = simple_strtoul(buf, &endp, 0);
967 while (*endp && isspace(*endp))
968 endp++;
969 if (*endp || *value > max)
970 return -EINVAL;
971
972 return 0;
973}
974
d64c81c4
HMH		 975static void tpacpi_disable_brightness_delay(void)
976{
977 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
978 printk(TPACPI_NOTICE
979 "ACPI backlight control delay disabled\n");
980}
981
b5972796
HMH		 982static int __init tpacpi_query_bcl_levels(acpi_handle handle)
983{
984 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
985 union acpi_object *obj;
986 int rc;
987
988 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
989 obj = (union acpi_object *)buffer.pointer;
990 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
991 printk(TPACPI_ERR "Unknown _BCL data, "
992 "please report this to %s\n", TPACPI_MAIL);
993 rc = 0;
994 } else {
995 rc = obj->package.count;
996 }
997 } else {
998 return 0;
999 }
1000
1001 kfree(buffer.pointer);
1002 return rc;
1003}
1004
1005static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
1006 u32 lvl, void *context, void **rv)
1007{
1008 char name[ACPI_PATH_SEGMENT_LENGTH];
1009 struct acpi_buffer buffer = { sizeof(name), &name };
1010
1011 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
1012 !strncmp("_BCL", name, sizeof(name) - 1)) {
1013 BUG_ON(!rv || !*rv);
1014 **(int **)rv = tpacpi_query_bcl_levels(handle);
1015 return AE_CTRL_TERMINATE;
1016 } else {
1017 return AE_OK;
1018 }
1019}
1020
1021/*
1022 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
1023 */
1024static int __init tpacpi_check_std_acpi_brightness_support(void)
1025{
1026 int status;
1027 int bcl_levels = 0;
1028 void *bcl_ptr = &bcl_levels;
1029
1030 if (!vid_handle) {
1031 TPACPI_ACPIHANDLE_INIT(vid);
1032 }
1033 if (!vid_handle)
1034 return 0;
1035
1036 /*
1037 * Search for a _BCL method, and execute it. This is safe on all
1038 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
1039 * BIOS in ACPI backlight control mode. We do NOT have to care
1040 * about calling the _BCL method in an enabled video device, any
1041 * will do for our purposes.
1042 */
1043
1044 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
1045 tpacpi_acpi_walk_find_bcl, NULL,
1046 &bcl_ptr);
1047
1048 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
1049 tp_features.bright_acpimode = 1;
1050 return (bcl_levels - 2);
1051 }
1052
1053 return 0;
1054}
1055
19d337df
JB		 1056static void printk_deprecated_attribute(const char * const what,
1057 const char * const details)
1058{
1059 tpacpi_log_usertask("deprecated sysfs attribute");
1060 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
1061 "will be removed. %s\n",
1062 what, details);
1063}
1064
1065/*************************************************************************
1066 * rfkill and radio control support helpers
1067 */
1068
1069/*
1070 * ThinkPad-ACPI firmware handling model:
1071 *
1072 * WLSW (master wireless switch) is event-driven, and is common to all
1073 * firmware-controlled radios. It cannot be controlled, just monitored,
1074 * as expected. It overrides all radio state in firmware
1075 *
1076 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1077 * (TODO: verify how WLSW interacts with the returned radio state).
1078 *
1079 * The only time there are shadow radio state changes, is when
1080 * masked-off hotkeys are used.
1081 */
1082
1083/*
1084 * Internal driver API for radio state:
1085 *
1086 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1087 * bool: true means radio blocked (off)
1088 */
1089enum tpacpi_rfkill_state {
1090 TPACPI_RFK_RADIO_OFF = 0,
1091 TPACPI_RFK_RADIO_ON
1092};
1093
1094/* rfkill switches */
1095enum tpacpi_rfk_id {
1096 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1097 TPACPI_RFK_WWAN_SW_ID,
1098 TPACPI_RFK_UWB_SW_ID,
1099 TPACPI_RFK_SW_MAX
1100};
1101
1102static const char *tpacpi_rfkill_names[] = {
1103 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1104 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1105 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1106 [TPACPI_RFK_SW_MAX] = NULL
1107};
1108
1109/* ThinkPad-ACPI rfkill subdriver */
1110struct tpacpi_rfk {
1111 struct rfkill *rfkill;
1112 enum tpacpi_rfk_id id;
1113 const struct tpacpi_rfk_ops *ops;
1114};
1115
1116struct tpacpi_rfk_ops {
1117 /* firmware interface */
1118 int (*get_status)(void);
1119 int (*set_status)(const enum tpacpi_rfkill_state);
1120};
1121
1122static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1123
1124/* Query FW and update rfkill sw state for a given rfkill switch */
1125static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1126{
1127 int status;
1128
1129 if (!tp_rfk)
1130 return -ENODEV;
1131
1132 status = (tp_rfk->ops->get_status)();
1133 if (status < 0)
1134 return status;
1135
1136 rfkill_set_sw_state(tp_rfk->rfkill,
1137 (status == TPACPI_RFK_RADIO_OFF));
1138
1139 return status;
1140}
1141
1142/* Query FW and update rfkill sw state for all rfkill switches */
1143static void tpacpi_rfk_update_swstate_all(void)
1144{
1145 unsigned int i;
1146
1147 for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
1148 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
1149}
1150
1151/*
1152 * Sync the HW-blocking state of all rfkill switches,
1153 * do notice it causes the rfkill core to schedule uevents
1154 */
1155static void tpacpi_rfk_update_hwblock_state(bool blocked)
1156{
1157 unsigned int i;
1158 struct tpacpi_rfk *tp_rfk;
1159
1160 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1161 tp_rfk = tpacpi_rfkill_switches[i];
1162 if (tp_rfk) {
1163 if (rfkill_set_hw_state(tp_rfk->rfkill,
1164 blocked)) {
1165 /* ignore -- we track sw block */
1166 }
1167 }
1168 }
1169}
1170
1171/* Call to get the WLSW state from the firmware */
1172static int hotkey_get_wlsw(void);
1173
1174/* Call to query WLSW state and update all rfkill switches */
1175static bool tpacpi_rfk_check_hwblock_state(void)
1176{
1177 int res = hotkey_get_wlsw();
1178 int hw_blocked;
1179
1180 /* When unknown or unsupported, we have to assume it is unblocked */
1181 if (res < 0)
1182 return false;
1183
1184 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1185 tpacpi_rfk_update_hwblock_state(hw_blocked);
1186
1187 return hw_blocked;
1188}
1189
1190static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1191{
1192 struct tpacpi_rfk *tp_rfk = data;
1193 int res;
1194
1195 dbg_printk(TPACPI_DBG_RFKILL,
1196 "request to change radio state to %s\n",
1197 blocked ? "blocked" : "unblocked");
1198
1199 /* try to set radio state */
1200 res = (tp_rfk->ops->set_status)(blocked ?
1201 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1202
1203 /* and update the rfkill core with whatever the FW really did */
1204 tpacpi_rfk_update_swstate(tp_rfk);
1205
1206 return (res < 0) ? res : 0;
1207}
1208
1209static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1210 .set_block = tpacpi_rfk_hook_set_block,
1211};
1212
1213static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1214 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1215 const enum rfkill_type rfktype,
1216 const char *name,
19d337df 1217 const bool set_default)
0e74dc26 1218{
19d337df 1219 struct tpacpi_rfk *atp_rfk;
0e74dc26 1220 int res;
06d5caf4
AJ		 1221 bool sw_state = false;
1222 int sw_status;
90d9d3c7 1223
19d337df
JB		 1224 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1225
19d337df
JB		 1226 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1227 if (atp_rfk)
1228 atp_rfk->rfkill = rfkill_alloc(name,
1229 &tpacpi_pdev->dev,
1230 rfktype,
1231 &tpacpi_rfk_rfkill_ops,
1232 atp_rfk);
1233 if (!atp_rfk || !atp_rfk->rfkill) {
0e74dc26
HMH		 1234 printk(TPACPI_ERR
1235 "failed to allocate memory for rfkill class\n");
19d337df 1236 kfree(atp_rfk);
0e74dc26
HMH		 1237 return -ENOMEM;
1238 }
1239
19d337df
JB		 1240 atp_rfk->id = id;
1241 atp_rfk->ops = tp_rfkops;
0e74dc26 1242
06d5caf4
AJ		 1243 sw_status = (tp_rfkops->get_status)();
1244 if (sw_status < 0) {
b3fa1329
AJ		 1245 printk(TPACPI_ERR
1246 "failed to read initial state for %s, error %d\n",
06d5caf4 1247 name, sw_status);
b3fa1329 1248 } else {
06d5caf4 1249 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1250 if (set_default) {
1251 /* try to keep the initial state, since we ask the
1252 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1253 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1254 }
1255 }
1256 rfkill_set_hw_state(atp_rfk->rfkill, tpacpi_rfk_check_hwblock_state());
19d337df
JB		 1257
1258 res = rfkill_register(atp_rfk->rfkill);
0e74dc26
HMH		 1259 if (res < 0) {
1260 printk(TPACPI_ERR
1261 "failed to register %s rfkill switch: %d\n",
1262 name, res);
19d337df
JB		 1263 rfkill_destroy(atp_rfk->rfkill);
1264 kfree(atp_rfk);
0e74dc26
HMH		 1265 return res;
1266 }
1267
19d337df 1268 tpacpi_rfkill_switches[id] = atp_rfk;
0e74dc26
HMH		 1269 return 0;
1270}
1271
19d337df 1272static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1273{
19d337df
JB		 1274 struct tpacpi_rfk *tp_rfk;
1275
1276 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1277
1278 tp_rfk = tpacpi_rfkill_switches[id];
1279 if (tp_rfk) {
1280 rfkill_unregister(tp_rfk->rfkill);
1281 tpacpi_rfkill_switches[id] = NULL;
1282 kfree(tp_rfk);
1283 }
73a94d86
HMH		 1284}
1285
1286static void printk_deprecated_rfkill_attribute(const char * const what)
1287{
1288 printk_deprecated_attribute(what,
1289 "Please switch to generic rfkill before year 2010");
1290}
1291
19d337df
JB		 1292/* sysfs <radio> enable ------------------------------------------------ */
1293static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1294 struct device_attribute *attr,
1295 char *buf)
1296{
1297 int status;
1298
1299 printk_deprecated_rfkill_attribute(attr->attr.name);
1300
1301 /* This is in the ABI... */
1302 if (tpacpi_rfk_check_hwblock_state()) {
1303 status = TPACPI_RFK_RADIO_OFF;
1304 } else {
1305 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1306 if (status < 0)
1307 return status;
1308 }
1309
1310 return snprintf(buf, PAGE_SIZE, "%d\n",
1311 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1312}
1313
1314static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1315 struct device_attribute *attr,
1316 const char *buf, size_t count)
1317{
1318 unsigned long t;
1319 int res;
1320
1321 printk_deprecated_rfkill_attribute(attr->attr.name);
1322
1323 if (parse_strtoul(buf, 1, &t))
1324 return -EINVAL;
1325
1326 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1327
1328 /* This is in the ABI... */
1329 if (tpacpi_rfk_check_hwblock_state() && !!t)
1330 return -EPERM;
1331
1332 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1333 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1334 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1335
1336 return (res < 0) ? res : count;
1337}
1338
1339/* procfs -------------------------------------------------------------- */
1340static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, char *p)
1341{
1342 int len = 0;
1343
1344 if (id >= TPACPI_RFK_SW_MAX)
1345 len += sprintf(p + len, "status:\t\tnot supported\n");
1346 else {
1347 int status;
1348
1349 /* This is in the ABI... */
1350 if (tpacpi_rfk_check_hwblock_state()) {
1351 status = TPACPI_RFK_RADIO_OFF;
1352 } else {
1353 status = tpacpi_rfk_update_swstate(
1354 tpacpi_rfkill_switches[id]);
1355 if (status < 0)
1356 return status;
1357 }
1358
1359 len += sprintf(p + len, "status:\t\t%s\n",
1360 (status == TPACPI_RFK_RADIO_ON) ?
1361 "enabled" : "disabled");
1362 len += sprintf(p + len, "commands:\tenable, disable\n");
1363 }
1364
1365 return len;
1366}
1367
1368static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1369{
1370 char *cmd;
1371 int status = -1;
1372 int res = 0;
1373
1374 if (id >= TPACPI_RFK_SW_MAX)
1375 return -ENODEV;
1376
1377 while ((cmd = next_cmd(&buf))) {
1378 if (strlencmp(cmd, "enable") == 0)
1379 status = TPACPI_RFK_RADIO_ON;
1380 else if (strlencmp(cmd, "disable") == 0)
1381 status = TPACPI_RFK_RADIO_OFF;
1382 else
1383 return -EINVAL;
1384 }
1385
1386 if (status != -1) {
1387 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1388 (status == TPACPI_RFK_RADIO_ON) ?
1389 "enable" : "disable",
1390 tpacpi_rfkill_names[id]);
1391 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1392 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1393 }
1394
1395 return res;
1396}
1397
56b6aeb0 1398/*************************************************************************
b21a15f6 1399 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1400 */
1401
b21a15f6
HMH		 1402/* interface_version --------------------------------------------------- */
1403static ssize_t tpacpi_driver_interface_version_show(
1404 struct device_driver *drv,
1405 char *buf)
1da177e4 1406{
b21a15f6
HMH		 1407 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1408}
1409
1410static DRIVER_ATTR(interface_version, S_IRUGO,
1411 tpacpi_driver_interface_version_show, NULL);
1412
1413/* debug_level --------------------------------------------------------- */
1414static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1415 char *buf)
1416{
1417 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1418}
1419
1420static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1421 const char *buf, size_t count)
1422{
1423 unsigned long t;
1424
1425 if (parse_strtoul(buf, 0xffff, &t))
1426 return -EINVAL;
1427
1428 dbg_level = t;
1429
1430 return count;
1431}
1432
1433static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1434 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1435
1436/* version ------------------------------------------------------------- */
1437static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1438 char *buf)
1439{
35ff8b9f
HMH		 1440 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1441 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 1442}
1443
1444static DRIVER_ATTR(version, S_IRUGO,
1445 tpacpi_driver_version_show, NULL);
1446
1447/* --------------------------------------------------------------------- */
1448
a73f3091
HMH		 1449#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1450
a73f3091
HMH		 1451/* wlsw_emulstate ------------------------------------------------------ */
1452static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1453 char *buf)
1454{
1455 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1456}
1457
1458static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1459 const char *buf, size_t count)
1460{
1461 unsigned long t;
1462
1463 if (parse_strtoul(buf, 1, &t))
1464 return -EINVAL;
1465
19d337df 1466 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1467 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1468 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1469 }
a73f3091
HMH		 1470
1471 return count;
1472}
1473
1474static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1475 tpacpi_driver_wlsw_emulstate_show,
1476 tpacpi_driver_wlsw_emulstate_store);
1477
1478/* bluetooth_emulstate ------------------------------------------------- */
1479static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1480 struct device_driver *drv,
1481 char *buf)
1482{
1483 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1484}
1485
1486static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1487 struct device_driver *drv,
1488 const char *buf, size_t count)
1489{
1490 unsigned long t;
1491
1492 if (parse_strtoul(buf, 1, &t))
1493 return -EINVAL;
1494
1495 tpacpi_bluetooth_emulstate = !!t;
1496
1497 return count;
1498}
1499
1500static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1501 tpacpi_driver_bluetooth_emulstate_show,
1502 tpacpi_driver_bluetooth_emulstate_store);
1503
1504/* wwan_emulstate ------------------------------------------------- */
1505static ssize_t tpacpi_driver_wwan_emulstate_show(
1506 struct device_driver *drv,
1507 char *buf)
1508{
1509 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1510}
1511
1512static ssize_t tpacpi_driver_wwan_emulstate_store(
1513 struct device_driver *drv,
1514 const char *buf, size_t count)
1515{
1516 unsigned long t;
1517
1518 if (parse_strtoul(buf, 1, &t))
1519 return -EINVAL;
1520
1521 tpacpi_wwan_emulstate = !!t;
1522
1523 return count;
1524}
1525
1526static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1527 tpacpi_driver_wwan_emulstate_show,
1528 tpacpi_driver_wwan_emulstate_store);
1529
0045c0aa
HMH		 1530/* uwb_emulstate ------------------------------------------------- */
1531static ssize_t tpacpi_driver_uwb_emulstate_show(
1532 struct device_driver *drv,
1533 char *buf)
1534{
1535 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1536}
1537
1538static ssize_t tpacpi_driver_uwb_emulstate_store(
1539 struct device_driver *drv,
1540 const char *buf, size_t count)
1541{
1542 unsigned long t;
1543
1544 if (parse_strtoul(buf, 1, &t))
1545 return -EINVAL;
1546
1547 tpacpi_uwb_emulstate = !!t;
1548
1549 return count;
1550}
1551
1552static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1553 tpacpi_driver_uwb_emulstate_show,
1554 tpacpi_driver_uwb_emulstate_store);
a73f3091
HMH		 1555#endif
1556
1557/* --------------------------------------------------------------------- */
1558
35ff8b9f 1559static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1560 &driver_attr_debug_level, &driver_attr_version,
1561 &driver_attr_interface_version,
1562};
1563
1564static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1565{
1566 int i, res;
1567
1568 i = 0;
1569 res = 0;
1570 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1571 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1572 i++;
1573 }
1574
a73f3091
HMH		 1575#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1576 if (!res && dbg_wlswemul)
1577 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1578 if (!res && dbg_bluetoothemul)
1579 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1580 if (!res && dbg_wwanemul)
1581 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1582 if (!res && dbg_uwbemul)
1583 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1584#endif
1585
b21a15f6
HMH		 1586 return res;
1587}
1588
1589static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1590{
1591 int i;
1592
35ff8b9f 1593 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1594 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1595
1596#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1597 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1598 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1599 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1600 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1601#endif
b21a15f6
HMH		 1602}
1603
600a99fa
HMH		 1604/*************************************************************************
1605 * Firmware Data
1606 */
1607
1608/*
1609 * Table of recommended minimum BIOS versions
1610 *
1611 * Reasons for listing:
1612 * 1. Stable BIOS, listed because the unknown ammount of
1613 * bugs and bad ACPI behaviour on older versions
1614 *
1615 * 2. BIOS or EC fw with known bugs that trigger on Linux
1616 *
1617 * 3. BIOS with known reduced functionality in older versions
1618 *
1619 * We recommend the latest BIOS and EC version.
1620 * We only support the latest BIOS and EC fw version as a rule.
1621 *
1622 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1623 * Information from users in ThinkWiki
e675abaf
HMH		 1624 *
1625 * WARNING: we use this table also to detect that the machine is
1626 * a ThinkPad in some cases, so don't remove entries lightly.
600a99fa
HMH		 1627 */
1628
1629#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1630 { .vendor = (__v), \
1631 .bios = TPID(__id1, __id2), \
1632 .ec = TPACPI_MATCH_ANY, \
1633 .quirks = TPACPI_MATCH_ANY << 16 \
1634 | (__bv1) << 8 | (__bv2) }
1635
1636#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
1637 __eid1, __eid2, __ev1, __ev2) \
1638 { .vendor = (__v), \
1639 .bios = TPID(__bid1, __bid2), \
1640 .ec = TPID(__eid1, __eid2), \
1641 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1642 | (__bv1) << 8 | (__bv2) }
1643
1644#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1645 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1646
1647#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1648 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1649 __bv1, __bv2, __id1, __id2, __ev1, __ev2)
1650
1651#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1652 __eid1, __eid2, __ev1, __ev2) \
1653 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1654 __bv1, __bv2, __eid1, __eid2, __ev1, __ev2)
1655
1656#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1657 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1658
1659#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1660 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
1661 __bv1, __bv2, __id1, __id2, __ev1, __ev2)
1662
1663#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1664 __eid1, __eid2, __ev1, __ev2) \
1665 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
1666 __bv1, __bv2, __eid1, __eid2, __ev1, __ev2)
1667
1668static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1669 /* Numeric models ------------------ */
1670 /* FW MODEL BIOS VERS */
1671 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1672 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1673 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1674 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1675 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1676 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1677 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1678 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1679 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1680
1681 /* A-series ------------------------- */
1682 /* FW MODEL BIOS VERS EC VERS */
1683 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1684 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1685 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1686 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1687 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1688 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1689 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1690 TPV_QI0('1', '3', '2', '0'), /* A22m */
1691 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1692 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1693 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1694
1695 /* G-series ------------------------- */
1696 /* FW MODEL BIOS VERS */
1697 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1698 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1699
1700 /* R-series, T-series --------------- */
1701 /* FW MODEL BIOS VERS EC VERS */
1702 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1703 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1704 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1705 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1706 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1707 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1708 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1709 T40/p, T41/p, T42/p (1) */
1710 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1711 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1712 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1713 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1714
1715 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1716 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1717 TPV_QI0('1', '6', '3', '2'), /* T22 */
1718 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1719 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1720 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1721
1722 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1723 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
1724 TPV_QL0('7', 'E', 'D', '0'), /* R60e, R60i */
1725
1726 /* BIOS FW BIOS VERS EC FW EC VERS */
1727 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1728 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1729
1730 /* X-series ------------------------- */
1731 /* FW MODEL BIOS VERS EC VERS */
1732 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1733 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1734 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1735 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1736 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1737 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1738 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1739
1740 TPV_QL0('7', 'B', 'D', '7'), /* X60/s */
1741 TPV_QL0('7', 'J', '3', '0'), /* X60t */
1742
1743 /* (0) - older versions lack DMI EC fw string and functionality */
1744 /* (1) - older versions known to lack functionality */
1745};
1746
1747#undef TPV_QL1
1748#undef TPV_QL0
1749#undef TPV_QI2
1750#undef TPV_QI1
1751#undef TPV_QI0
1752#undef TPV_Q_X
1753#undef TPV_Q
1754
1755static void __init tpacpi_check_outdated_fw(void)
1756{
1757 unsigned long fwvers;
1758 u16 ec_version, bios_version;
1759
1760 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1761 ARRAY_SIZE(tpacpi_bios_version_qtable));
1762
1763 if (!fwvers)
1764 return;
1765
1766 bios_version = fwvers & 0xffffU;
1767 ec_version = (fwvers >> 16) & 0xffffU;
1768
1769 /* note that unknown versions are set to 0x0000 and we use that */
1770 if ((bios_version > thinkpad_id.bios_release) ||
1771 (ec_version > thinkpad_id.ec_release &&
1772 ec_version != TPACPI_MATCH_ANY)) {
1773 /*
1774 * The changelogs would let us track down the exact
1775 * reason, but it is just too much of a pain to track
1776 * it. We only list BIOSes that are either really
1777 * broken, or really stable to begin with, so it is
1778 * best if the user upgrades the firmware anyway.
1779 */
1780 printk(TPACPI_WARN
1781 "WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1782 printk(TPACPI_WARN
1783 "WARNING: This firmware may be missing critical bug "
1784 "fixes and/or important features\n");
1785 }
1786}
1787
e675abaf
HMH		 1788static bool __init tpacpi_is_fw_known(void)
1789{
1790 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1791 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1792}
1793
b21a15f6
HMH		 1794/****************************************************************************
1795 ****************************************************************************
1796 *
1797 * Subdrivers
1798 *
1799 ****************************************************************************
1800 ****************************************************************************/
1801
1802/*************************************************************************
1803 * thinkpad-acpi init subdriver
1804 */
1805
1806static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1807{
e0c7dfe7
HMH		 1808 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1809 printk(TPACPI_INFO "%s\n", TPACPI_URL);
b21a15f6 1810
e0c7dfe7 1811 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
b21a15f6
HMH		 1812 (thinkpad_id.bios_version_str) ?
1813 thinkpad_id.bios_version_str : "unknown",
1814 (thinkpad_id.ec_version_str) ?
1815 thinkpad_id.ec_version_str : "unknown");
d5a2f2f1
HMH		 1816
1817 if (thinkpad_id.vendor && thinkpad_id.model_str)
8c74adbc 1818 printk(TPACPI_INFO "%s %s, model %s\n",
d5a2f2f1
HMH		 1819 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1820 "IBM" : ((thinkpad_id.vendor ==
1821 PCI_VENDOR_ID_LENOVO) ?
1822 "Lenovo" : "Unknown vendor"),
8c74adbc
HMH		 1823 thinkpad_id.model_str,
1824 (thinkpad_id.nummodel_str) ?
1825 thinkpad_id.nummodel_str : "unknown");
3945ac36 1826
600a99fa 1827 tpacpi_check_outdated_fw();
1da177e4
LT		 1828 return 0;
1829}
1830
643f12db 1831static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 1832{
1833 int len = 0;
1834
e0c7dfe7
HMH		 1835 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1836 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1da177e4
LT		 1837
1838 return len;
1839}
1840
a5763f22
HMH		 1841static struct ibm_struct thinkpad_acpi_driver_data = {
1842 .name = "driver",
1843 .read = thinkpad_acpi_driver_read,
1844};
1845
56b6aeb0
HMH		 1846/*************************************************************************
1847 * Hotkey subdriver
1848 */
1849
f74a27d4
HMH		 1850enum { /* hot key scan codes (derived from ACPI DSDT) */
1851 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1852 TP_ACPI_HOTKEYSCAN_FNF2,
1853 TP_ACPI_HOTKEYSCAN_FNF3,
1854 TP_ACPI_HOTKEYSCAN_FNF4,
1855 TP_ACPI_HOTKEYSCAN_FNF5,
1856 TP_ACPI_HOTKEYSCAN_FNF6,
1857 TP_ACPI_HOTKEYSCAN_FNF7,
1858 TP_ACPI_HOTKEYSCAN_FNF8,
1859 TP_ACPI_HOTKEYSCAN_FNF9,
1860 TP_ACPI_HOTKEYSCAN_FNF10,
1861 TP_ACPI_HOTKEYSCAN_FNF11,
1862 TP_ACPI_HOTKEYSCAN_FNF12,
1863 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1864 TP_ACPI_HOTKEYSCAN_FNINSERT,
1865 TP_ACPI_HOTKEYSCAN_FNDELETE,
1866 TP_ACPI_HOTKEYSCAN_FNHOME,
1867 TP_ACPI_HOTKEYSCAN_FNEND,
1868 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1869 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1870 TP_ACPI_HOTKEYSCAN_FNSPACE,
1871 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1872 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1873 TP_ACPI_HOTKEYSCAN_MUTE,
1874 TP_ACPI_HOTKEYSCAN_THINKPAD,
1875};
1876
01e88f25
HMH		 1877enum { /* Keys available through NVRAM polling */
1878 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1879 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1880};
1881
1882enum { /* Positions of some of the keys in hotkey masks */
1883 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1884 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1885 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1886 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1887 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1888 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1889 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1890 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1891 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1892 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1893 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1894};
1895
1896enum { /* NVRAM to ACPI HKEY group map */
1897 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1898 TP_ACPI_HKEY_ZOOM_MASK |
1899 TP_ACPI_HKEY_DISPSWTCH_MASK |
1900 TP_ACPI_HKEY_HIBERNATE_MASK,
1901 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1902 TP_ACPI_HKEY_BRGHTDWN_MASK,
1903 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1904 TP_ACPI_HKEY_VOLDWN_MASK |
1905 TP_ACPI_HKEY_MUTE_MASK,
1906};
1907
1908#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1909struct tp_nvram_state {
1910 u16 thinkpad_toggle:1;
1911 u16 zoom_toggle:1;
1912 u16 display_toggle:1;
1913 u16 thinklight_toggle:1;
1914 u16 hibernate_toggle:1;
1915 u16 displayexp_toggle:1;
1916 u16 display_state:1;
1917 u16 brightness_toggle:1;
1918 u16 volume_toggle:1;
1919 u16 mute:1;
1920
1921 u8 brightness_level;
1922 u8 volume_level;
1923};
1924
db25f16d 1925/* kthread for the hotkey poller */
01e88f25 1926static struct task_struct *tpacpi_hotkey_task;
db25f16d
HMH		 1927
1928/* Acquired while the poller kthread is running, use to sync start/stop */
01e88f25 1929static struct mutex hotkey_thread_mutex;
db25f16d
HMH		 1930
1931/*
1932 * Acquire mutex to write poller control variables.
1933 * Increment hotkey_config_change when changing them.
1934 *
1935 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1936 */
01e88f25
HMH		 1937static struct mutex hotkey_thread_data_mutex;
1938static unsigned int hotkey_config_change;
1939
db25f16d
HMH		 1940/*
1941 * hotkey poller control variables
1942 *
1943 * Must be atomic or readers will also need to acquire mutex
1944 */
1945static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1946static unsigned int hotkey_poll_freq = 10; /* Hz */
1947
1948#define HOTKEY_CONFIG_CRITICAL_START \
1949 do { \
1950 mutex_lock(&hotkey_thread_data_mutex); \
1951 hotkey_config_change++; \
1952 } while (0);
1953#define HOTKEY_CONFIG_CRITICAL_END \
1954 mutex_unlock(&hotkey_thread_data_mutex);
1955
01e88f25
HMH		 1956#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1957
1958#define hotkey_source_mask 0U
db25f16d
HMH		 1959#define HOTKEY_CONFIG_CRITICAL_START
1960#define HOTKEY_CONFIG_CRITICAL_END
01e88f25
HMH		 1961
1962#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1963
f74a27d4
HMH		 1964static struct mutex hotkey_mutex;
1965
a713b4d7
HMH		 1966static enum { /* Reasons for waking up */
1967 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1968 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1969 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1970} hotkey_wakeup_reason;
1971
1972static int hotkey_autosleep_ack;
1973
ae92bd17 1974static u32 hotkey_orig_mask;
9b010de5 1975static u32 hotkey_all_mask;
6a38abbf 1976static u32 hotkey_reserved_mask;
b2c985e7 1977static u32 hotkey_mask;
6a38abbf 1978
b21a15f6
HMH		 1979static unsigned int hotkey_report_mode;
1980
edf0e0e5 1981static u16 *hotkey_keycode_map;
78f81cc4 1982
94954cc6 1983static struct attribute_set *hotkey_dev_attributes;
a0416420 1984
6c231bd5
HMH		 1985/* HKEY.MHKG() return bits */
1986#define TP_HOTKEY_TABLET_MASK (1 << 3)
1987
19d337df 1988static int hotkey_get_wlsw(void)
74941a69 1989{
19d337df
JB		 1990 int status;
1991
1992 if (!tp_features.hotkey_wlsw)
1993 return -ENODEV;
1994
a73f3091 1995#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 1996 if (dbg_wlswemul)
1997 return (tpacpi_wlsw_emulstate) ?
1998 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 1999#endif
19d337df
JB		 2000
2001 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 2002 return -EIO;
19d337df
JB		 2003
2004 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 2005}
2006
6c231bd5
HMH		 2007static int hotkey_get_tablet_mode(int *status)
2008{
2009 int s;
2010
2011 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2012 return -EIO;
2013
cee47f5a
HMH		 2014 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2015 return 0;
6c231bd5
HMH		 2016}
2017
b2c985e7
HMH		 2018/*
2019 * Call with hotkey_mutex held
2020 */
2021static int hotkey_mask_get(void)
2022{
01e88f25
HMH		 2023 u32 m = 0;
2024
b2c985e7 2025 if (tp_features.hotkey_mask) {
01e88f25 2026 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7
HMH		 2027 return -EIO;
2028 }
db25f16d 2029 HOTKEY_CONFIG_CRITICAL_START
01e88f25 2030 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
db25f16d 2031 HOTKEY_CONFIG_CRITICAL_END
b2c985e7
HMH		 2032
2033 return 0;
2034}
2035
2036/*
2037 * Call with hotkey_mutex held
2038 */
2039static int hotkey_mask_set(u32 mask)
2040{
2041 int i;
2042 int rc = 0;
2043
2044 if (tp_features.hotkey_mask) {
92889022
HMH		 2045 if (!tp_warned.hotkey_mask_ff &&
2046 (mask == 0xffff || mask == 0xffffff ||
2047 mask == 0xffffffff)) {
2048 tp_warned.hotkey_mask_ff = 1;
2049 printk(TPACPI_NOTICE
2050 "setting the hotkey mask to 0x%08x is likely "
2051 "not the best way to go about it\n", mask);
2052 printk(TPACPI_NOTICE
2053 "please consider using the driver defaults, "
2054 "and refer to up-to-date thinkpad-acpi "
2055 "documentation\n");
2056 }
2057
01e88f25 2058 HOTKEY_CONFIG_CRITICAL_START
b2c985e7
HMH		 2059 for (i = 0; i < 32; i++) {
2060 u32 m = 1 << i;
01e88f25
HMH		 2061 /* enable in firmware mask only keys not in NVRAM
2062 * mode, but enable the key in the cached hotkey_mask
2063 * regardless of mode, or the key will end up
2064 * disabled by hotkey_mask_get() */
b2c985e7
HMH		 2065 if (!acpi_evalf(hkey_handle,
2066 NULL, "MHKM", "vdd", i + 1,
01e88f25 2067 !!((mask & ~hotkey_source_mask) & m))) {
b2c985e7
HMH		 2068 rc = -EIO;
2069 break;
2070 } else {
2071 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
2072 }
2073 }
01e88f25 2074 HOTKEY_CONFIG_CRITICAL_END
b2c985e7
HMH		 2075
2076 /* hotkey_mask_get must be called unconditionally below */
01e88f25
HMH		 2077 if (!hotkey_mask_get() && !rc &&
2078 (hotkey_mask & ~hotkey_source_mask) !=
2079 (mask & ~hotkey_source_mask)) {
e0c7dfe7 2080 printk(TPACPI_NOTICE
b2c985e7
HMH		 2081 "requested hot key mask 0x%08x, but "
2082 "firmware forced it to 0x%08x\n",
2083 mask, hotkey_mask);
2084 }
01e88f25
HMH		 2085 } else {
2086#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2087 HOTKEY_CONFIG_CRITICAL_START
2088 hotkey_mask = mask & hotkey_source_mask;
2089 HOTKEY_CONFIG_CRITICAL_END
2090 hotkey_mask_get();
2091 if (hotkey_mask != mask) {
e0c7dfe7 2092 printk(TPACPI_NOTICE
01e88f25
HMH		 2093 "requested hot key mask 0x%08x, "
2094 "forced to 0x%08x (NVRAM poll mask is "
2095 "0x%08x): no firmware mask support\n",
2096 mask, hotkey_mask, hotkey_source_mask);
2097 }
2098#else
2099 hotkey_mask_get();
2100 rc = -ENXIO;
2101#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
b2c985e7
HMH		 2102 }
2103
2104 return rc;
2105}
2106
2107static int hotkey_status_get(int *status)
2108{
2109 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2110 return -EIO;
2111
2112 return 0;
2113}
2114
2586d566 2115static int hotkey_status_set(bool enable)
b2c985e7 2116{
2586d566 2117 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 2118 return -EIO;
2119
2120 return 0;
2121}
2122
6c231bd5 2123static void tpacpi_input_send_tabletsw(void)
b3ec6f91 2124{
6c231bd5 2125 int state;
b3ec6f91 2126
6c231bd5
HMH		 2127 if (tp_features.hotkey_tablet &&
2128 !hotkey_get_tablet_mode(&state)) {
2129 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 2130
6c231bd5
HMH		 2131 input_report_switch(tpacpi_inputdev,
2132 SW_TABLET_MODE, !!state);
2133 input_sync(tpacpi_inputdev);
2134
2135 mutex_unlock(&tpacpi_inputdev_send_mutex);
2136 }
b3ec6f91
HMH		 2137}
2138
b7c8c200
HMH		 2139static void tpacpi_input_send_key(unsigned int scancode)
2140{
2141 unsigned int keycode;
2142
2143 keycode = hotkey_keycode_map[scancode];
2144
2145 if (keycode != KEY_RESERVED) {
2146 mutex_lock(&tpacpi_inputdev_send_mutex);
2147
2148 input_report_key(tpacpi_inputdev, keycode, 1);
2149 if (keycode == KEY_UNKNOWN)
2150 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
2151 scancode);
2152 input_sync(tpacpi_inputdev);
2153
2154 input_report_key(tpacpi_inputdev, keycode, 0);
2155 if (keycode == KEY_UNKNOWN)
2156 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
2157 scancode);
2158 input_sync(tpacpi_inputdev);
2159
2160 mutex_unlock(&tpacpi_inputdev_send_mutex);
2161 }
2162}
2163
01e88f25
HMH		 2164#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2165static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2166
2167static void tpacpi_hotkey_send_key(unsigned int scancode)
2168{
2169 tpacpi_input_send_key(scancode);
2170 if (hotkey_report_mode < 2) {
2171 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
2172 0x80, 0x1001 + scancode);
2173 }
2174}
2175
2176static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
2177{
2178 u8 d;
2179
2180 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2181 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2182 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2183 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2184 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2185 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2186 }
2187 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
2188 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2189 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2190 }
2191 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2192 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2193 n->displayexp_toggle =
2194 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2195 }
2196 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2197 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2198 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2199 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2200 n->brightness_toggle =
2201 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2202 }
2203 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2204 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2205 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2206 >> TP_NVRAM_POS_LEVEL_VOLUME;
2207 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2208 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2209 }
2210}
2211
2212#define TPACPI_COMPARE_KEY(__scancode, __member) \
35ff8b9f
HMH		 2213 do { \
2214 if ((mask & (1 << __scancode)) && \
2215 oldn->__member != newn->__member) \
2216 tpacpi_hotkey_send_key(__scancode); \
2217 } while (0)
01e88f25
HMH		 2218
2219#define TPACPI_MAY_SEND_KEY(__scancode) \
2220 do { if (mask & (1 << __scancode)) \
2221 tpacpi_hotkey_send_key(__scancode); } while (0)
2222
2223static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
35ff8b9f 2224 struct tp_nvram_state *newn,
01e88f25
HMH		 2225 u32 mask)
2226{
2227 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2228 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2229 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2230 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2231
2232 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2233
2234 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2235
2236 /* handle volume */
2237 if (oldn->volume_toggle != newn->volume_toggle) {
2238 if (oldn->mute != newn->mute) {
2239 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2240 }
2241 if (oldn->volume_level > newn->volume_level) {
2242 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2243 } else if (oldn->volume_level < newn->volume_level) {
2244 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2245 } else if (oldn->mute == newn->mute) {
2246 /* repeated key presses that didn't change state */
2247 if (newn->mute) {
2248 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2249 } else if (newn->volume_level != 0) {
2250 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2251 } else {
2252 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2253 }
2254 }
2255 }
2256
2257 /* handle brightness */
2258 if (oldn->brightness_toggle != newn->brightness_toggle) {
2259 if (oldn->brightness_level < newn->brightness_level) {
2260 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2261 } else if (oldn->brightness_level > newn->brightness_level) {
2262 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2263 } else {
2264 /* repeated key presses that didn't change state */
2265 if (newn->brightness_level != 0) {
2266 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2267 } else {
2268 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2269 }
2270 }
2271 }
2272}
2273
2274#undef TPACPI_COMPARE_KEY
2275#undef TPACPI_MAY_SEND_KEY
2276
2277static int hotkey_kthread(void *data)
2278{
2279 struct tp_nvram_state s[2];
2280 u32 mask;
2281 unsigned int si, so;
2282 unsigned long t;
2283 unsigned int change_detector, must_reset;
db25f16d 2284 unsigned int poll_freq;
01e88f25
HMH		 2285
2286 mutex_lock(&hotkey_thread_mutex);
2287
2288 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2289 goto exit;
2290
2291 set_freezable();
2292
2293 so = 0;
2294 si = 1;
2295 t = 0;
2296
2297 /* Initial state for compares */
2298 mutex_lock(&hotkey_thread_data_mutex);
2299 change_detector = hotkey_config_change;
2300 mask = hotkey_source_mask & hotkey_mask;
db25f16d 2301 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2302 mutex_unlock(&hotkey_thread_data_mutex);
2303 hotkey_read_nvram(&s[so], mask);
2304
db25f16d
HMH		 2305 while (!kthread_should_stop()) {
2306 if (t == 0) {
2307 if (likely(poll_freq))
2308 t = 1000/poll_freq;
2309 else
2310 t = 100; /* should never happen... */
2311 }
01e88f25
HMH		 2312 t = msleep_interruptible(t);
2313 if (unlikely(kthread_should_stop()))
2314 break;
2315 must_reset = try_to_freeze();
2316 if (t > 0 && !must_reset)
2317 continue;
2318
2319 mutex_lock(&hotkey_thread_data_mutex);
2320 if (must_reset || hotkey_config_change != change_detector) {
2321 /* forget old state on thaw or config change */
2322 si = so;
2323 t = 0;
2324 change_detector = hotkey_config_change;
2325 }
2326 mask = hotkey_source_mask & hotkey_mask;
db25f16d 2327 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2328 mutex_unlock(&hotkey_thread_data_mutex);
2329
2330 if (likely(mask)) {
2331 hotkey_read_nvram(&s[si], mask);
2332 if (likely(si != so)) {
2333 hotkey_compare_and_issue_event(&s[so], &s[si],
35ff8b9f 2334 mask);
01e88f25
HMH		 2335 }
2336 }
2337
2338 so = si;
2339 si ^= 1;
2340 }
2341
2342exit:
2343 mutex_unlock(&hotkey_thread_mutex);
2344 return 0;
2345}
2346
db25f16d 2347/* call with hotkey_mutex held */
01e88f25
HMH		 2348static void hotkey_poll_stop_sync(void)
2349{
2350 if (tpacpi_hotkey_task) {
2351 if (frozen(tpacpi_hotkey_task) ||
2352 freezing(tpacpi_hotkey_task))
2353 thaw_process(tpacpi_hotkey_task);
2354
2355 kthread_stop(tpacpi_hotkey_task);
2356 tpacpi_hotkey_task = NULL;
2357 mutex_lock(&hotkey_thread_mutex);
2358 /* at this point, the thread did exit */
2359 mutex_unlock(&hotkey_thread_mutex);
2360 }
2361}
2362
2363/* call with hotkey_mutex held */
db25f16d 2364static void hotkey_poll_setup(bool may_warn)
01e88f25 2365{
db25f16d
HMH		 2366 u32 hotkeys_to_poll = hotkey_source_mask & hotkey_mask;
2367
2368 if (hotkeys_to_poll != 0 && hotkey_poll_freq > 0 &&
01e88f25
HMH		 2369 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
2370 if (!tpacpi_hotkey_task) {
2371 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2372 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2373 if (IS_ERR(tpacpi_hotkey_task)) {
2374 tpacpi_hotkey_task = NULL;
35ff8b9f
HMH		 2375 printk(TPACPI_ERR
2376 "could not create kernel thread "
01e88f25
HMH		 2377 "for hotkey polling\n");
2378 }
2379 }
2380 } else {
2381 hotkey_poll_stop_sync();
db25f16d
HMH		 2382 if (may_warn && hotkeys_to_poll != 0 &&
2383 hotkey_poll_freq == 0) {
35ff8b9f
HMH		 2384 printk(TPACPI_NOTICE
2385 "hot keys 0x%08x require polling, "
01e88f25 2386 "which is currently disabled\n",
db25f16d 2387 hotkeys_to_poll);
01e88f25
HMH		 2388 }
2389 }
2390}
2391
db25f16d 2392static void hotkey_poll_setup_safe(bool may_warn)
01e88f25
HMH		 2393{
2394 mutex_lock(&hotkey_mutex);
2395 hotkey_poll_setup(may_warn);
2396 mutex_unlock(&hotkey_mutex);
2397}
2398
db25f16d
HMH		 2399/* call with hotkey_mutex held */
2400static void hotkey_poll_set_freq(unsigned int freq)
2401{
2402 if (!freq)
2403 hotkey_poll_stop_sync();
2404
2405 HOTKEY_CONFIG_CRITICAL_START
2406 hotkey_poll_freq = freq;
2407 HOTKEY_CONFIG_CRITICAL_END
2408}
2409
1bc6b9cd
HMH		 2410#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2411
db25f16d 2412static void hotkey_poll_setup_safe(bool __unused)
1bc6b9cd
HMH		 2413{
2414}
2415
2416#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2417
01e88f25
HMH		 2418static int hotkey_inputdev_open(struct input_dev *dev)
2419{
2420 switch (tpacpi_lifecycle) {
2421 case TPACPI_LIFE_INIT:
2422 /*
2423 * hotkey_init will call hotkey_poll_setup_safe
2424 * at the appropriate moment
2425 */
2426 return 0;
2427 case TPACPI_LIFE_EXITING:
2428 return -EBUSY;
2429 case TPACPI_LIFE_RUNNING:
db25f16d 2430 hotkey_poll_setup_safe(false);
01e88f25
HMH		 2431 return 0;
2432 }
2433
2434 /* Should only happen if tpacpi_lifecycle is corrupt */
2435 BUG();
2436 return -EBUSY;
2437}
2438
2439static void hotkey_inputdev_close(struct input_dev *dev)
2440{
2441 /* disable hotkey polling when possible */
2442 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
db25f16d 2443 hotkey_poll_setup_safe(false);
01e88f25 2444}
01e88f25 2445
a0416420
HMH		 2446/* sysfs hotkey enable ------------------------------------------------- */
2447static ssize_t hotkey_enable_show(struct device *dev,
2448 struct device_attribute *attr,
2449 char *buf)
2450{
ae92bd17 2451 int res, status;
a0416420 2452
2586d566
HMH		 2453 printk_deprecated_attribute("hotkey_enable",
2454 "Hotkey reporting is always enabled");
2455
b2c985e7 2456 res = hotkey_status_get(&status);
a0416420
HMH		 2457 if (res)
2458 return res;
2459
2460 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2461}
2462
2463static ssize_t hotkey_enable_store(struct device *dev,
2464 struct device_attribute *attr,
2465 const char *buf, size_t count)
2466{
2467 unsigned long t;
2586d566
HMH		 2468
2469 printk_deprecated_attribute("hotkey_enable",
2470 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2471
2472 if (parse_strtoul(buf, 1, &t))
2473 return -EINVAL;
2474
2586d566
HMH		 2475 if (t == 0)
2476 return -EPERM;
a0416420 2477
2586d566 2478 return count;
a0416420
HMH		 2479}
2480
2481static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 2482 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 2483 hotkey_enable_show, hotkey_enable_store);
2484
2485/* sysfs hotkey mask --------------------------------------------------- */
2486static ssize_t hotkey_mask_show(struct device *dev,
2487 struct device_attribute *attr,
2488 char *buf)
2489{
b2c985e7 2490 int res;
a0416420 2491
7646ea88 2492 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2493 return -ERESTARTSYS;
2494 res = hotkey_mask_get();
2495 mutex_unlock(&hotkey_mutex);
a0416420 2496
b2c985e7
HMH		 2497 return (res)?
2498 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
a0416420
HMH		 2499}
2500
2501static ssize_t hotkey_mask_store(struct device *dev,
2502 struct device_attribute *attr,
2503 const char *buf, size_t count)
2504{
2505 unsigned long t;
b2c985e7 2506 int res;
a0416420 2507
ae92bd17 2508 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2509 return -EINVAL;
2510
7646ea88 2511 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2512 return -ERESTARTSYS;
2513
2514 res = hotkey_mask_set(t);
01e88f25
HMH		 2515
2516#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2517 hotkey_poll_setup(true);
01e88f25
HMH		 2518#endif
2519
b2c985e7 2520 mutex_unlock(&hotkey_mutex);
a0416420 2521
56e2c200
HMH		 2522 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2523
a0416420
HMH		 2524 return (res) ? res : count;
2525}
2526
2527static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 2528 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 2529 hotkey_mask_show, hotkey_mask_store);
2530
2531/* sysfs hotkey bios_enabled ------------------------------------------- */
2532static ssize_t hotkey_bios_enabled_show(struct device *dev,
2533 struct device_attribute *attr,
2534 char *buf)
2535{
2586d566 2536 return sprintf(buf, "0\n");
a0416420
HMH		 2537}
2538
2539static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 2540 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 2541
2542/* sysfs hotkey bios_mask ---------------------------------------------- */
2543static ssize_t hotkey_bios_mask_show(struct device *dev,
2544 struct device_attribute *attr,
2545 char *buf)
2546{
06777be6
HMH		 2547 printk_deprecated_attribute("hotkey_bios_mask",
2548 "This attribute is useless.");
ae92bd17 2549 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2550}
2551
2552static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 2553 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 2554
9b010de5
HMH		 2555/* sysfs hotkey all_mask ----------------------------------------------- */
2556static ssize_t hotkey_all_mask_show(struct device *dev,
2557 struct device_attribute *attr,
2558 char *buf)
2559{
01e88f25
HMH		 2560 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2561 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2562}
2563
2564static struct device_attribute dev_attr_hotkey_all_mask =
2565 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2566
2567/* sysfs hotkey recommended_mask --------------------------------------- */
2568static ssize_t hotkey_recommended_mask_show(struct device *dev,
2569 struct device_attribute *attr,
2570 char *buf)
2571{
2572 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2573 (hotkey_all_mask | hotkey_source_mask)
2574 & ~hotkey_reserved_mask);
9b010de5
HMH		 2575}
2576
2577static struct device_attribute dev_attr_hotkey_recommended_mask =
2578 __ATTR(hotkey_recommended_mask, S_IRUGO,
2579 hotkey_recommended_mask_show, NULL);
2580
01e88f25
HMH		 2581#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2582
2583/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2584static ssize_t hotkey_source_mask_show(struct device *dev,
2585 struct device_attribute *attr,
2586 char *buf)
2587{
2588 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2589}
2590
2591static ssize_t hotkey_source_mask_store(struct device *dev,
2592 struct device_attribute *attr,
2593 const char *buf, size_t count)
2594{
2595 unsigned long t;
2596
2597 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2598 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2599 return -EINVAL;
2600
7646ea88 2601 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2602 return -ERESTARTSYS;
2603
2604 HOTKEY_CONFIG_CRITICAL_START
2605 hotkey_source_mask = t;
2606 HOTKEY_CONFIG_CRITICAL_END
2607
db25f16d
HMH		 2608 hotkey_poll_setup(true);
2609 hotkey_mask_set(hotkey_mask);
01e88f25
HMH		 2610
2611 mutex_unlock(&hotkey_mutex);
2612
56e2c200
HMH		 2613 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2614
01e88f25
HMH		 2615 return count;
2616}
2617
2618static struct device_attribute dev_attr_hotkey_source_mask =
2619 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2620 hotkey_source_mask_show, hotkey_source_mask_store);
2621
2622/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2623static ssize_t hotkey_poll_freq_show(struct device *dev,
2624 struct device_attribute *attr,
2625 char *buf)
2626{
2627 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2628}
2629
2630static ssize_t hotkey_poll_freq_store(struct device *dev,
2631 struct device_attribute *attr,
2632 const char *buf, size_t count)
2633{
2634 unsigned long t;
2635
2636 if (parse_strtoul(buf, 25, &t))
2637 return -EINVAL;
2638
7646ea88 2639 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2640 return -ERESTARTSYS;
2641
db25f16d
HMH		 2642 hotkey_poll_set_freq(t);
2643 hotkey_poll_setup(true);
01e88f25 2644
01e88f25
HMH		 2645 mutex_unlock(&hotkey_mutex);
2646
56e2c200
HMH		 2647 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2648
01e88f25
HMH		 2649 return count;
2650}
2651
2652static struct device_attribute dev_attr_hotkey_poll_freq =
2653 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2654 hotkey_poll_freq_show, hotkey_poll_freq_store);
2655
2656#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2657
50ebec09 2658/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2659static ssize_t hotkey_radio_sw_show(struct device *dev,
2660 struct device_attribute *attr,
2661 char *buf)
2662{
19d337df
JB		 2663 int res;
2664 res = hotkey_get_wlsw();
74941a69
HMH		 2665 if (res < 0)
2666 return res;
2667
19d337df
JB		 2668 /* Opportunistic update */
2669 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2670
2671 return snprintf(buf, PAGE_SIZE, "%d\n",
2672 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2673}
2674
2675static struct device_attribute dev_attr_hotkey_radio_sw =
2676 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2677
50ebec09
HMH		 2678static void hotkey_radio_sw_notify_change(void)
2679{
2680 if (tp_features.hotkey_wlsw)
2681 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2682 "hotkey_radio_sw");
2683}
2684
6c231bd5
HMH		 2685/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2686static ssize_t hotkey_tablet_mode_show(struct device *dev,
2687 struct device_attribute *attr,
2688 char *buf)
2689{
2690 int res, s;
2691 res = hotkey_get_tablet_mode(&s);
2692 if (res < 0)
2693 return res;
2694
2695 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2696}
2697
2698static struct device_attribute dev_attr_hotkey_tablet_mode =
2699 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2700
2701static void hotkey_tablet_mode_notify_change(void)
2702{
2703 if (tp_features.hotkey_tablet)
2704 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2705 "hotkey_tablet_mode");
2706}
2707
ff80f137
HMH		 2708/* sysfs hotkey report_mode -------------------------------------------- */
2709static ssize_t hotkey_report_mode_show(struct device *dev,
2710 struct device_attribute *attr,
2711 char *buf)
2712{
2713 return snprintf(buf, PAGE_SIZE, "%d\n",
2714 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2715}
2716
2717static struct device_attribute dev_attr_hotkey_report_mode =
2718 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2719
50ebec09 2720/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2721static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2722 struct device_attribute *attr,
2723 char *buf)
2724{
2725 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2726}
2727
2728static struct device_attribute dev_attr_hotkey_wakeup_reason =
2729 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2730
1d5a2b54 2731static void hotkey_wakeup_reason_notify_change(void)
50ebec09
HMH		 2732{
2733 if (tp_features.hotkey_mask)
2734 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2735 "wakeup_reason");
2736}
2737
2738/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2739static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2740 struct device_attribute *attr,
2741 char *buf)
2742{
2743 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2744}
2745
2746static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2747 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2748 hotkey_wakeup_hotunplug_complete_show, NULL);
2749
1d5a2b54 2750static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09
HMH		 2751{
2752 if (tp_features.hotkey_mask)
2753 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2754 "wakeup_hotunplug_complete");
2755}
2756
a0416420
HMH		 2757/* --------------------------------------------------------------------- */
2758
ff80f137
HMH		 2759static struct attribute *hotkey_attributes[] __initdata = {
2760 &dev_attr_hotkey_enable.attr,
01e88f25 2761 &dev_attr_hotkey_bios_enabled.attr,
ff80f137 2762 &dev_attr_hotkey_report_mode.attr,
01e88f25
HMH		 2763#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2764 &dev_attr_hotkey_mask.attr,
2765 &dev_attr_hotkey_all_mask.attr,
2766 &dev_attr_hotkey_recommended_mask.attr,
2767 &dev_attr_hotkey_source_mask.attr,
2768 &dev_attr_hotkey_poll_freq.attr,
2769#endif
ff80f137
HMH		 2770};
2771
2772static struct attribute *hotkey_mask_attributes[] __initdata = {
a0416420 2773 &dev_attr_hotkey_bios_mask.attr,
01e88f25
HMH		 2774#ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2775 &dev_attr_hotkey_mask.attr,
9b010de5
HMH		 2776 &dev_attr_hotkey_all_mask.attr,
2777 &dev_attr_hotkey_recommended_mask.attr,
01e88f25 2778#endif
a713b4d7
HMH		 2779 &dev_attr_hotkey_wakeup_reason.attr,
2780 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
a0416420
HMH		 2781};
2782
19d337df
JB		 2783/*
2784 * Sync both the hw and sw blocking state of all switches
2785 */
733e27c1
HMH		 2786static void tpacpi_send_radiosw_update(void)
2787{
2788 int wlsw;
2789
19d337df
JB		 2790 /*
2791 * We must sync all rfkill controllers *before* issuing any
2792 * rfkill input events, or we will race the rfkill core input
2793 * handler.
2794 *
2795 * tpacpi_inputdev_send_mutex works as a syncronization point
2796 * for the above.
2797 *
2798 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2799 */
2800
2801 wlsw = hotkey_get_wlsw();
2802
2803 /* Sync hw blocking state first if it is hw-blocked */
2804 if (wlsw == TPACPI_RFK_RADIO_OFF)
2805 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 2806
19d337df
JB		 2807 /* Sync sw blocking state */
2808 tpacpi_rfk_update_swstate_all();
2809
2810 /* Sync hw blocking state last if it is hw-unblocked */
2811 if (wlsw == TPACPI_RFK_RADIO_ON)
2812 tpacpi_rfk_update_hwblock_state(false);
2813
2814 /* Issue rfkill input event for WLSW switch */
2815 if (!(wlsw < 0)) {
733e27c1
HMH		 2816 mutex_lock(&tpacpi_inputdev_send_mutex);
2817
2818 input_report_switch(tpacpi_inputdev,
19d337df 2819 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 2820 input_sync(tpacpi_inputdev);
2821
2822 mutex_unlock(&tpacpi_inputdev_send_mutex);
2823 }
19d337df
JB		 2824
2825 /*
2826 * this can be unconditional, as we will poll state again
2827 * if userspace uses the notify to read data
2828 */
733e27c1
HMH		 2829 hotkey_radio_sw_notify_change();
2830}
2831
9c0a76e1
HMH		 2832static void hotkey_exit(void)
2833{
2834#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2835 mutex_lock(&hotkey_mutex);
9c0a76e1 2836 hotkey_poll_stop_sync();
db25f16d 2837 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 2838#endif
2839
2840 if (hotkey_dev_attributes)
2841 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2842
2843 kfree(hotkey_keycode_map);
2844
2845 if (tp_features.hotkey) {
56e2c200 2846 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 2847 "restoring original hot key mask\n");
2848 /* no short-circuit boolean operator below! */
2849 if ((hotkey_mask_set(hotkey_orig_mask) |
2586d566 2850 hotkey_status_set(false)) != 0)
9c0a76e1
HMH		 2851 printk(TPACPI_ERR
2852 "failed to restore hot key mask "
2853 "to BIOS defaults\n");
2854 }
2855}
2856
a5763f22 2857static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 2858{
0f089147
HMH		 2859 /* Requirements for changing the default keymaps:
2860 *
2861 * 1. Many of the keys are mapped to KEY_RESERVED for very
2862 * good reasons. Do not change them unless you have deep
2863 * knowledge on the IBM and Lenovo ThinkPad firmware for
2864 * the various ThinkPad models. The driver behaves
2865 * differently for KEY_RESERVED: such keys have their
2866 * hot key mask *unset* in mask_recommended, and also
2867 * in the initial hot key mask programmed into the
2868 * firmware at driver load time, which means the firm-
2869 * ware may react very differently if you change them to
2870 * something else;
2871 *
2872 * 2. You must be subscribed to the linux-thinkpad and
2873 * ibm-acpi-devel mailing lists, and you should read the
2874 * list archives since 2007 if you want to change the
2875 * keymaps. This requirement exists so that you will
2876 * know the past history of problems with the thinkpad-
2877 * acpi driver keymaps, and also that you will be
2878 * listening to any bug reports;
2879 *
2880 * 3. Do not send thinkpad-acpi specific patches directly to
2881 * for merging, *ever*. Send them to the linux-acpi
2882 * mailinglist for comments. Merging is to be done only
2883 * through acpi-test and the ACPI maintainer.
2884 *
2885 * If the above is too much to ask, don't change the keymap.
2886 * Ask the thinkpad-acpi maintainer to do it, instead.
2887 */
edf0e0e5
HMH		 2888 static u16 ibm_keycode_map[] __initdata = {
2889 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2890 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
2891 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2892 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 2893
2894 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 2895 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2896 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2897 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147
HMH		 2898
2899 /* brightness: firmware always reacts to them, unless
2900 * X.org did some tricks in the radeon BIOS scratch
2901 * registers of *some* models */
e927c08d 2902 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 2903 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 2904
2905 /* Thinklight: firmware always react to it */
edf0e0e5 2906 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 2907
edf0e0e5
HMH		 2908 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2909 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 2910
2911 /* Volume: firmware always react to it and reprograms
2912 * the built-in *extra* mixer. Never map it to control
2913 * another mixer by default. */
e927c08d
HMH		 2914 KEY_RESERVED, /* 0x14: VOLUME UP */
2915 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2916 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2917
edf0e0e5 2918 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2919
edf0e0e5
HMH		 2920 /* (assignments unknown, please report if found) */
2921 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2922 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2923 };
2924 static u16 lenovo_keycode_map[] __initdata = {
2925 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2926 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2927 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2928 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 2929
2930 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 2931 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2932 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2933 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 2934
b5972796
HMH		 2935 /* These either have to go through ACPI video, or
2936 * act like in the IBM ThinkPads, so don't ever
2937 * enable them by default */
56a185b4 2938 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
56a185b4 2939 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147 2940
edf0e0e5 2941 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 2942
edf0e0e5
HMH		 2943 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2944 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 2945
2946 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2947 * react to it and reprograms the built-in *extra* mixer.
2948 * Never map it to control another mixer by default.
2949 *
2950 * T60?, T61, R60?, R61: firmware and EC tries to send
2951 * these over the regular keyboard, so these are no-ops,
2952 * but there are still weird bugs re. MUTE, so do not
2953 * change unless you get test reports from all Lenovo
2954 * models. May cause the BIOS to interfere with the
2955 * HDA mixer.
2956 */
e927c08d
HMH		 2957 KEY_RESERVED, /* 0x14: VOLUME UP */
2958 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2959 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2960
edf0e0e5 2961 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2962
edf0e0e5
HMH		 2963 /* (assignments unknown, please report if found) */
2964 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2965 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2966 };
2967
2968#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2969#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2970#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2971
6a38abbf 2972 int res, i;
74941a69 2973 int status;
1b6521dc 2974 int hkeyv;
b86c4722 2975
56e2c200
HMH		 2976 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2977 "initializing hotkey subdriver\n");
fe08bc4b 2978
6a38abbf 2979 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 2980 BUG_ON(tpacpi_inputdev->open != NULL ||
2981 tpacpi_inputdev->close != NULL);
6a38abbf 2982
e0c7dfe7 2983 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 2984 mutex_init(&hotkey_mutex);
5fba344c 2985
01e88f25
HMH		 2986#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2987 mutex_init(&hotkey_thread_mutex);
2988 mutex_init(&hotkey_thread_data_mutex);
2989#endif
2990
56b6aeb0 2991 /* hotkey not supported on 570 */
d8fd94d9 2992 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 2993
56e2c200
HMH		 2994 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2995 "hotkeys are %s\n",
d8fd94d9 2996 str_supported(tp_features.hotkey));
fe08bc4b 2997
9c0a76e1
HMH		 2998 if (!tp_features.hotkey)
2999 return 1;
a0416420 3000
d64c81c4
HMH		 3001 tpacpi_disable_brightness_delay();
3002
9c0a76e1
HMH		 3003 hotkey_dev_attributes = create_attr_set(13, NULL);
3004 if (!hotkey_dev_attributes)
3005 return -ENOMEM;
3006 res = add_many_to_attr_set(hotkey_dev_attributes,
3007 hotkey_attributes,
3008 ARRAY_SIZE(hotkey_attributes));
3009 if (res)
3010 goto err_exit;
3011
3012 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3013 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3014 for HKEY interface version 0x100 */
3015 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3016 if ((hkeyv >> 8) != 1) {
3017 printk(TPACPI_ERR "unknown version of the "
3018 "HKEY interface: 0x%x\n", hkeyv);
3019 printk(TPACPI_ERR "please report this to %s\n",
3020 TPACPI_MAIL);
3021 } else {
3022 /*
3023 * MHKV 0x100 in A31, R40, R40e,
3024 * T4x, X31, and later
3025 */
3026 tp_features.hotkey_mask = 1;
56e2c200
HMH		 3027 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3028 "firmware HKEY interface version: 0x%x\n",
3029 hkeyv);
1b6521dc 3030 }
9c0a76e1 3031 }
56b6aeb0 3032
56e2c200
HMH		 3033 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3034 "hotkey masks are %s\n",
9c0a76e1 3035 str_supported(tp_features.hotkey_mask));
fe08bc4b 3036
9c0a76e1
HMH		 3037 if (tp_features.hotkey_mask) {
3038 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3039 "MHKA", "qd")) {
3040 printk(TPACPI_ERR
3041 "missing MHKA handler, "
3042 "please report this to %s\n",
3043 TPACPI_MAIL);
3044 /* FN+F12, FN+F4, FN+F3 */
3045 hotkey_all_mask = 0x080cU;
9b010de5 3046 }
9c0a76e1 3047 }
9b010de5 3048
9c0a76e1
HMH		 3049 /* hotkey_source_mask *must* be zero for
3050 * the first hotkey_mask_get */
9c0a76e1
HMH		 3051 if (tp_features.hotkey_mask) {
3052 res = hotkey_mask_get();
3053 if (res)
3054 goto err_exit;
3055
3056 hotkey_orig_mask = hotkey_mask;
3057 res = add_many_to_attr_set(
3058 hotkey_dev_attributes,
3059 hotkey_mask_attributes,
3060 ARRAY_SIZE(hotkey_mask_attributes));
3061 if (res)
3062 goto err_exit;
3063 }
74941a69 3064
01e88f25 3065#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
9c0a76e1
HMH		 3066 if (tp_features.hotkey_mask) {
3067 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3068 & ~hotkey_all_mask;
3069 } else {
3070 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
3071 }
01e88f25 3072
56e2c200 3073 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
db25f16d 3074 "hotkey source mask 0x%08x, polling freq %u\n",
9c0a76e1 3075 hotkey_source_mask, hotkey_poll_freq);
01e88f25
HMH		 3076#endif
3077
a73f3091
HMH		 3078#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3079 if (dbg_wlswemul) {
3080 tp_features.hotkey_wlsw = 1;
3081 printk(TPACPI_INFO
3082 "radio switch emulation enabled\n");
3083 } else
3084#endif
9c0a76e1
HMH		 3085 /* Not all thinkpads have a hardware radio switch */
3086 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3087 tp_features.hotkey_wlsw = 1;
3088 printk(TPACPI_INFO
3089 "radio switch found; radios are %s\n",
3090 enabled(status, 0));
3a872080
HMH		 3091 }
3092 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 3093 res = add_to_attr_set(hotkey_dev_attributes,
3094 &dev_attr_hotkey_radio_sw.attr);
74941a69 3095
9c0a76e1
HMH		 3096 /* For X41t, X60t, X61t Tablets... */
3097 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
3098 tp_features.hotkey_tablet = 1;
3099 printk(TPACPI_INFO
3100 "possible tablet mode switch found; "
3101 "ThinkPad in %s mode\n",
3102 (status & TP_HOTKEY_TABLET_MASK)?
3103 "tablet" : "laptop");
3104 res = add_to_attr_set(hotkey_dev_attributes,
3105 &dev_attr_hotkey_tablet_mode.attr);
3106 }
6c231bd5 3107
9c0a76e1
HMH		 3108 if (!res)
3109 res = register_attr_set_with_sysfs(
3110 hotkey_dev_attributes,
3111 &tpacpi_pdev->dev.kobj);
3112 if (res)
3113 goto err_exit;
6a38abbf 3114
9c0a76e1 3115 /* Set up key map */
edf0e0e5 3116
9c0a76e1
HMH		 3117 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3118 GFP_KERNEL);
3119 if (!hotkey_keycode_map) {
3120 printk(TPACPI_ERR
3121 "failed to allocate memory for key map\n");
3122 res = -ENOMEM;
3123 goto err_exit;
3124 }
edf0e0e5 3125
9c0a76e1 3126 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
56e2c200 3127 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 3128 "using Lenovo default hot key map\n");
3129 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
3130 TPACPI_HOTKEY_MAP_SIZE);
3131 } else {
56e2c200 3132 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
9c0a76e1
HMH		 3133 "using IBM default hot key map\n");
3134 memcpy(hotkey_keycode_map, &ibm_keycode_map,
3135 TPACPI_HOTKEY_MAP_SIZE);
3136 }
edf0e0e5 3137
9c0a76e1
HMH		 3138 set_bit(EV_KEY, tpacpi_inputdev->evbit);
3139 set_bit(EV_MSC, tpacpi_inputdev->evbit);
3140 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
3141 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3142 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3143 tpacpi_inputdev->keycode = hotkey_keycode_map;
3144 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3145 if (hotkey_keycode_map[i] != KEY_RESERVED) {
3146 set_bit(hotkey_keycode_map[i],
3147 tpacpi_inputdev->keybit);
3148 } else {
3149 if (i < sizeof(hotkey_reserved_mask)*8)
3150 hotkey_reserved_mask |= 1 << i;
6a38abbf 3151 }
9c0a76e1 3152 }
6a38abbf 3153
9c0a76e1
HMH		 3154 if (tp_features.hotkey_wlsw) {
3155 set_bit(EV_SW, tpacpi_inputdev->evbit);
3156 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit);
3157 }
3158 if (tp_features.hotkey_tablet) {
3159 set_bit(EV_SW, tpacpi_inputdev->evbit);
3160 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
3161 }
5c29d58f 3162
9c0a76e1
HMH		 3163 /* Do not issue duplicate brightness change events to
3164 * userspace */
3165 if (!tp_features.bright_acpimode)
3166 /* update bright_acpimode... */
3167 tpacpi_check_std_acpi_brightness_support();
b5972796 3168
8bf3d4c5 3169 if (tp_features.bright_acpimode && acpi_video_backlight_support()) {
9c0a76e1
HMH		 3170 printk(TPACPI_INFO
3171 "This ThinkPad has standard ACPI backlight "
3172 "brightness control, supported by the ACPI "
3173 "video driver\n");
3174 printk(TPACPI_NOTICE
3175 "Disabling thinkpad-acpi brightness events "
3176 "by default...\n");
3177
3178 /* The hotkey_reserved_mask change below is not
3179 * necessary while the keys are at KEY_RESERVED in the
3180 * default map, but better safe than sorry, leave it
3181 * here as a marker of what we have to do, especially
3182 * when we finally become able to set this at runtime
3183 * on response to X.org requests */
3184 hotkey_reserved_mask |=
3185 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3186 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
3187 }
ff80f137 3188
56e2c200
HMH		 3189 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3190 "enabling firmware HKEY event interface...\n");
2586d566 3191 res = hotkey_status_set(true);
9c0a76e1
HMH		 3192 if (res) {
3193 hotkey_exit();
3194 return res;
3195 }
3196 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
3197 & ~hotkey_reserved_mask)
3198 | hotkey_orig_mask);
3199 if (res < 0 && res != -ENXIO) {
3200 hotkey_exit();
3201 return res;
3202 }
01e88f25 3203
56e2c200
HMH		 3204 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3205 "legacy ibm/hotkey event reporting over procfs %s\n",
9c0a76e1
HMH		 3206 (hotkey_report_mode < 2) ?
3207 "enabled" : "disabled");
01e88f25 3208
9c0a76e1
HMH		 3209 tpacpi_inputdev->open = &hotkey_inputdev_open;
3210 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3211
db25f16d 3212 hotkey_poll_setup_safe(true);
733e27c1 3213 tpacpi_send_radiosw_update();
9c0a76e1 3214 tpacpi_input_send_tabletsw();
56b6aeb0 3215
9c0a76e1 3216 return 0;
01e88f25 3217
9c0a76e1
HMH		 3218err_exit:
3219 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3220 hotkey_dev_attributes = NULL;
a0416420 3221
9c0a76e1 3222 return (res < 0)? res : 1;
56b6aeb0
HMH		 3223}
3224
3827e7a3
HMH		 3225static bool hotkey_notify_hotkey(const u32 hkey,
3226 bool *send_acpi_ev,
3227 bool *ignore_acpi_ev)
3228{
3229 /* 0x1000-0x1FFF: key presses */
3230 unsigned int scancode = hkey & 0xfff;
3231 *send_acpi_ev = true;
3232 *ignore_acpi_ev = false;
3233
3234 if (scancode > 0 && scancode < 0x21) {
3235 scancode--;
3236 if (!(hotkey_source_mask & (1 << scancode))) {
3237 tpacpi_input_send_key(scancode);
3238 *send_acpi_ev = false;
3239 } else {
3240 *ignore_acpi_ev = true;
3241 }
3242 return true;
3243 }
3244 return false;
3245}
3246
3247static bool hotkey_notify_wakeup(const u32 hkey,
3248 bool *send_acpi_ev,
3249 bool *ignore_acpi_ev)
3250{
3251 /* 0x2000-0x2FFF: Wakeup reason */
3252 *send_acpi_ev = true;
3253 *ignore_acpi_ev = false;
3254
3255 switch (hkey) {
3256 case 0x2304: /* suspend, undock */
3257 case 0x2404: /* hibernation, undock */
3258 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3259 *ignore_acpi_ev = true;
3260 break;
3261
3262 case 0x2305: /* suspend, bay eject */
3263 case 0x2405: /* hibernation, bay eject */
3264 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3265 *ignore_acpi_ev = true;
3266 break;
3267
106b4e66
HMH		 3268 case 0x2313: /* Battery on critical low level (S3) */
3269 case 0x2413: /* Battery on critical low level (S4) */
3270 printk(TPACPI_ALERT
3271 "EMERGENCY WAKEUP: battery almost empty\n");
3272 /* how to auto-heal: */
3273 /* 2313: woke up from S3, go to S4/S5 */
3274 /* 2413: woke up from S4, go to S5 */
3275 break;
3276
3827e7a3
HMH		 3277 default:
3278 return false;
3279 }
3280
3281 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
3282 printk(TPACPI_INFO
3283 "woke up due to a hot-unplug "
3284 "request...\n");
3285 hotkey_wakeup_reason_notify_change();
3286 }
3287 return true;
3288}
3289
3290static bool hotkey_notify_usrevent(const u32 hkey,
3291 bool *send_acpi_ev,
3292 bool *ignore_acpi_ev)
3293{
3294 /* 0x5000-0x5FFF: human interface helpers */
3295 *send_acpi_ev = true;
3296 *ignore_acpi_ev = false;
3297
3298 switch (hkey) {
3299 case 0x5010: /* Lenovo new BIOS: brightness changed */
3300 case 0x500b: /* X61t: tablet pen inserted into bay */
3301 case 0x500c: /* X61t: tablet pen removed from bay */
3302 return true;
3303
3304 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
3305 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
3306 tpacpi_input_send_tabletsw();
3307 hotkey_tablet_mode_notify_change();
3308 *send_acpi_ev = false;
3309 return true;
3310
3311 case 0x5001:
3312 case 0x5002:
3313 /* LID switch events. Do not propagate */
3314 *ignore_acpi_ev = true;
3315 return true;
3316
3317 default:
3318 return false;
3319 }
3320}
3321
106b4e66
HMH		 3322static bool hotkey_notify_thermal(const u32 hkey,
3323 bool *send_acpi_ev,
3324 bool *ignore_acpi_ev)
3325{
3326 /* 0x6000-0x6FFF: thermal alarms */
3327 *send_acpi_ev = true;
3328 *ignore_acpi_ev = false;
3329
3330 switch (hkey) {
3331 case 0x6011:
3332 printk(TPACPI_CRIT
3333 "THERMAL ALARM: battery is too hot!\n");
3334 /* recommended action: warn user through gui */
3335 return true;
3336 case 0x6012:
3337 printk(TPACPI_ALERT
3338 "THERMAL EMERGENCY: battery is extremely hot!\n");
3339 /* recommended action: immediate sleep/hibernate */
3340 return true;
3341 case 0x6021:
3342 printk(TPACPI_CRIT
3343 "THERMAL ALARM: "
3344 "a sensor reports something is too hot!\n");
3345 /* recommended action: warn user through gui, that */
3346 /* some internal component is too hot */
3347 return true;
3348 case 0x6022:
3349 printk(TPACPI_ALERT
3350 "THERMAL EMERGENCY: "
3351 "a sensor reports something is extremely hot!\n");
3352 /* recommended action: immediate sleep/hibernate */
3353 return true;
54926ce8
HMH		 3354 case 0x6030:
3355 printk(TPACPI_INFO
3356 "EC reports that Thermal Table has changed\n");
3357 /* recommended action: do nothing, we don't have
3358 * Lenovo ATM information */
3359 return true;
106b4e66
HMH		 3360 default:
3361 printk(TPACPI_ALERT
3362 "THERMAL ALERT: unknown thermal alarm received\n");
3363 return false;
3364 }
3365}
3366
56b6aeb0
HMH		 3367static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3368{
6a38abbf 3369 u32 hkey;
3827e7a3
HMH		 3370 bool send_acpi_ev;
3371 bool ignore_acpi_ev;
3372 bool known_ev;
3eea123d
HMH		 3373
3374 if (event != 0x80) {
35ff8b9f
HMH		 3375 printk(TPACPI_ERR
3376 "unknown HKEY notification event %d\n", event);
3eea123d 3377 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 3378 acpi_bus_generate_netlink_event(
3379 ibm->acpi->device->pnp.device_class,
e0b36fc5 3380 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3381 event, 0);
3eea123d
HMH		 3382 return;
3383 }
3384
3385 while (1) {
3386 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
e0c7dfe7 3387 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
3eea123d
HMH		 3388 return;
3389 }
3390
3391 if (hkey == 0) {
3392 /* queue empty */
3393 return;
3394 }
3395
3827e7a3
HMH		 3396 send_acpi_ev = true;
3397 ignore_acpi_ev = false;
56b6aeb0 3398
ff80f137
HMH		 3399 switch (hkey >> 12) {
3400 case 1:
3401 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 3402 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3403 &ignore_acpi_ev);
ff80f137 3404 break;
a713b4d7 3405 case 2:
3827e7a3
HMH		 3406 /* 0x2000-0x2FFF: Wakeup reason */
3407 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3408 &ignore_acpi_ev);
a713b4d7
HMH		 3409 break;
3410 case 3:
3827e7a3 3411 /* 0x3000-0x3FFF: bay-related wakeups */
a713b4d7
HMH		 3412 if (hkey == 0x3003) {
3413 hotkey_autosleep_ack = 1;
3414 printk(TPACPI_INFO
3415 "bay ejected\n");
50ebec09 3416 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3417 known_ev = true;
a713b4d7 3418 } else {
3827e7a3 3419 known_ev = false;
a713b4d7
HMH		 3420 }
3421 break;
3422 case 4:
3827e7a3 3423 /* 0x4000-0x4FFF: dock-related wakeups */
a713b4d7
HMH		 3424 if (hkey == 0x4003) {
3425 hotkey_autosleep_ack = 1;
3426 printk(TPACPI_INFO
3427 "undocked\n");
50ebec09 3428 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3429 known_ev = true;
a713b4d7 3430 } else {
3827e7a3 3431 known_ev = false;
a713b4d7
HMH		 3432 }
3433 break;
ff80f137 3434 case 5:
d1edb2b5 3435 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 3436 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3437 &ignore_acpi_ev);
ff80f137 3438 break;
106b4e66
HMH		 3439 case 6:
3440 /* 0x6000-0x6FFF: thermal alarms */
3441 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
3442 &ignore_acpi_ev);
3443 break;
ff80f137
HMH		 3444 case 7:
3445 /* 0x7000-0x7FFF: misc */
3446 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
733e27c1 3447 tpacpi_send_radiosw_update();
3b64b51d 3448 send_acpi_ev = 0;
3827e7a3 3449 known_ev = true;
6a38abbf 3450 break;
6a38abbf 3451 }
ff80f137
HMH		 3452 /* fallthrough to default */
3453 default:
3827e7a3 3454 known_ev = false;
3b64b51d 3455 }
3827e7a3 3456 if (!known_ev) {
35ff8b9f
HMH		 3457 printk(TPACPI_NOTICE
3458 "unhandled HKEY event 0x%04x\n", hkey);
cb429358
HMH		 3459 printk(TPACPI_NOTICE
3460 "please report the conditions when this "
3461 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 3462 }
ff80f137 3463
3eea123d 3464 /* Legacy events */
35ff8b9f
HMH		 3465 if (!ignore_acpi_ev &&
3466 (send_acpi_ev || hotkey_report_mode < 2)) {
3467 acpi_bus_generate_proc_event(ibm->acpi->device,
3468 event, hkey);
3e5ce914 3469 }
ff80f137 3470
3eea123d 3471 /* netlink events */
3e5ce914 3472 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 3473 acpi_bus_generate_netlink_event(
3474 ibm->acpi->device->pnp.device_class,
e0b36fc5 3475 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3476 event, hkey);
3eea123d 3477 }
56b6aeb0
HMH		 3478 }
3479}
3480
a713b4d7
HMH		 3481static void hotkey_suspend(pm_message_t state)
3482{
3483 /* Do these on suspend, we get the events on early resume! */
3484 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3485 hotkey_autosleep_ack = 0;
3486}
3487
5c29d58f
HMH		 3488static void hotkey_resume(void)
3489{
d64c81c4
HMH		 3490 tpacpi_disable_brightness_delay();
3491
b2c985e7 3492 if (hotkey_mask_get())
35ff8b9f
HMH		 3493 printk(TPACPI_ERR
3494 "error while trying to read hot key mask "
3495 "from firmware\n");
733e27c1 3496 tpacpi_send_radiosw_update();
6c231bd5 3497 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 3498 hotkey_wakeup_reason_notify_change();
3499 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 3500 hotkey_poll_setup_safe(false);
5c29d58f
HMH		 3501}
3502
a0416420 3503/* procfs -------------------------------------------------------------- */
78f81cc4 3504static int hotkey_read(char *p)
1da177e4 3505{
ae92bd17 3506 int res, status;
1da177e4
LT		 3507 int len = 0;
3508
d8fd94d9 3509 if (!tp_features.hotkey) {
78f81cc4
BD		 3510 len += sprintf(p + len, "status:\t\tnot supported\n");
3511 return len;
3512 }
3513
7646ea88 3514 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3515 return -ERESTARTSYS;
b2c985e7
HMH		 3516 res = hotkey_status_get(&status);
3517 if (!res)
3518 res = hotkey_mask_get();
40ca9fdf 3519 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 3520 if (res)
3521 return res;
1da177e4
LT		 3522
3523 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 3524 if (tp_features.hotkey_mask) {
b2c985e7 3525 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
1da177e4
LT		 3526 len += sprintf(p + len,
3527 "commands:\tenable, disable, reset, <mask>\n");
3528 } else {
3529 len += sprintf(p + len, "mask:\t\tnot supported\n");
3530 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
3531 }
3532
3533 return len;
3534}
3535
406e988b 3536static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 3537{
3538 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b
HMH		 3539 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
3540 TPACPI_WARN
3541 "hotkey enable/disable functionality has been "
3542 "removed from the driver. Hotkeys are always "
3543 "enabled\n"))
3544 printk(TPACPI_ERR
3545 "Please remove the hotkey=enable module "
3546 "parameter, it is deprecated. Hotkeys are always "
3547 "enabled\n");
2586d566
HMH		 3548}
3549
78f81cc4 3550static int hotkey_write(char *buf)
1da177e4 3551{
2586d566 3552 int res;
ae92bd17 3553 u32 mask;
1da177e4 3554 char *cmd;
1da177e4 3555
d8fd94d9 3556 if (!tp_features.hotkey)
1da177e4
LT		 3557 return -ENODEV;
3558
7646ea88 3559 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3560 return -ERESTARTSYS;
40ca9fdf 3561
b2c985e7 3562 mask = hotkey_mask;
78f81cc4 3563
40ca9fdf 3564 res = 0;
1da177e4
LT		 3565 while ((cmd = next_cmd(&buf))) {
3566 if (strlencmp(cmd, "enable") == 0) {
406e988b 3567 hotkey_enabledisable_warn(1);
1da177e4 3568 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 3569 hotkey_enabledisable_warn(0);
2586d566 3570 res = -EPERM;
1da177e4 3571 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 3572 mask = (hotkey_all_mask | hotkey_source_mask)
3573 & ~hotkey_reserved_mask;
1da177e4
LT		 3574 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
3575 /* mask set */
3576 } else if (sscanf(cmd, "%x", &mask) == 1) {
3577 /* mask set */
40ca9fdf
HMH		 3578 } else {
3579 res = -EINVAL;
3580 goto errexit;
3581 }
1da177e4 3582 }
56e2c200
HMH		 3583
3584 if (!res)
3585 tpacpi_disclose_usertask("procfs hotkey",
3586 "set mask to 0x%08x\n", mask);
3587
b2c985e7
HMH		 3588 if (!res && mask != hotkey_mask)
3589 res = hotkey_mask_set(mask);
1da177e4 3590
40ca9fdf
HMH		 3591errexit:
3592 mutex_unlock(&hotkey_mutex);
3593 return res;
78f81cc4 3594}
1da177e4 3595
1ba90e3a 3596static const struct acpi_device_id ibm_htk_device_ids[] = {
e0c7dfe7 3597 {TPACPI_ACPI_HKEY_HID, 0},
1ba90e3a
TR		 3598 {"", 0},
3599};
3600
8d376cd6 3601static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 3602 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 3603 .notify = hotkey_notify,
3604 .handle = &hkey_handle,
3605 .type = ACPI_DEVICE_NOTIFY,
3606};
3607
a5763f22
HMH		 3608static struct ibm_struct hotkey_driver_data = {
3609 .name = "hotkey",
a5763f22
HMH		 3610 .read = hotkey_read,
3611 .write = hotkey_write,
3612 .exit = hotkey_exit,
5c29d58f 3613 .resume = hotkey_resume,
a713b4d7 3614 .suspend = hotkey_suspend,
8d376cd6 3615 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 3616};
3617
56b6aeb0
HMH		 3618/*************************************************************************
3619 * Bluetooth subdriver
3620 */
1da177e4 3621
f74a27d4
HMH		 3622enum {
3623 /* ACPI GBDC/SBDC bits */
3624 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3625 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220
HMH		 3626 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
3627 off / last state */
3628};
3629
3630enum {
3631 /* ACPI \BLTH commands */
3632 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3633 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3634 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3635 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3636 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 3637};
3638
bee4cd9b
HMH		 3639#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3640
153f8220
HMH		 3641static void bluetooth_suspend(pm_message_t state)
3642{
3643 /* Try to make sure radio will resume powered off */
bee4cd9b
HMH		 3644 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3645 TP_ACPI_BLTH_PWR_OFF_ON_RESUME))
3646 vdbg_printk(TPACPI_DBG_RFKILL,
3647 "bluetooth power down on resume request failed\n");
153f8220
HMH		 3648}
3649
19d337df 3650static int bluetooth_get_status(void)
07431ec8
HMH		 3651{
3652 int status;
3653
a73f3091
HMH		 3654#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3655 if (dbg_bluetoothemul)
3656 return (tpacpi_bluetooth_emulstate) ?
19d337df 3657 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 3658#endif
3659
07431ec8
HMH		 3660 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3661 return -EIO;
3662
0e74dc26 3663 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 3664 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 3665}
3666
19d337df 3667static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 3668{
3669 int status;
3670
bee4cd9b 3671 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 3672 "will attempt to %s bluetooth\n",
3673 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 3674
a73f3091
HMH		 3675#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3676 if (dbg_bluetoothemul) {
19d337df 3677 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 3678 return 0;
3679 }
3680#endif
3681
153f8220 3682 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
19d337df 3683 if (state == TPACPI_RFK_RADIO_ON)
153f8220 3684 status = TP_ACPI_BLUETOOTH_RADIOSSW;
07431ec8 3685 else
153f8220 3686 status = 0;
19d337df 3687
07431ec8
HMH		 3688 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3689 return -EIO;
3690
3691 return 0;
3692}
f74a27d4 3693
d3a6ade4
HMH		 3694/* sysfs bluetooth enable ---------------------------------------------- */
3695static ssize_t bluetooth_enable_show(struct device *dev,
3696 struct device_attribute *attr,
3697 char *buf)
3698{
19d337df
JB		 3699 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
3700 attr, buf);
d3a6ade4
HMH		 3701}
3702
3703static ssize_t bluetooth_enable_store(struct device *dev,
3704 struct device_attribute *attr,
3705 const char *buf, size_t count)
3706{
19d337df
JB		 3707 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
3708 attr, buf, count);
d3a6ade4
HMH		 3709}
3710
3711static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 3712 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3713 bluetooth_enable_show, bluetooth_enable_store);
3714
3715/* --------------------------------------------------------------------- */
3716
3717static struct attribute *bluetooth_attributes[] = {
3718 &dev_attr_bluetooth_enable.attr,
3719 NULL
3720};
3721
3722static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 3723 .attrs = bluetooth_attributes,
3724};
3725
19d337df
JB		 3726static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
3727 .get_status = bluetooth_get_status,
3728 .set_status = bluetooth_set_status,
3729};
0e74dc26 3730
90d9d3c7
HMH		 3731static void bluetooth_shutdown(void)
3732{
3733 /* Order firmware to save current state to NVRAM */
3734 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3735 TP_ACPI_BLTH_SAVE_STATE))
3736 printk(TPACPI_NOTICE
3737 "failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 3738 else
3739 vdbg_printk(TPACPI_DBG_RFKILL,
3740 "bluestooth state saved to NVRAM\n");
90d9d3c7
HMH		 3741}
3742
07431ec8
HMH		 3743static void bluetooth_exit(void)
3744{
3745 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3746 &bluetooth_attr_group);
19d337df
JB		 3747
3748 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
3749
3750 bluetooth_shutdown();
07431ec8
HMH		 3751}
3752
a5763f22 3753static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 3754{
d3a6ade4 3755 int res;
d6fdd1e9
HMH		 3756 int status = 0;
3757
bee4cd9b
HMH		 3758 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3759 "initializing bluetooth subdriver\n");
fe08bc4b 3760
e0c7dfe7 3761 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3762
78f81cc4
BD		 3763 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3764 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 3765 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 3766 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
3767
bee4cd9b
HMH		 3768 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3769 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 3770 str_supported(tp_features.bluetooth),
3771 status);
3772
a73f3091
HMH		 3773#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3774 if (dbg_bluetoothemul) {
3775 tp_features.bluetooth = 1;
3776 printk(TPACPI_INFO
3777 "bluetooth switch emulation enabled\n");
3778 } else
3779#endif
3a872080
HMH		 3780 if (tp_features.bluetooth &&
3781 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
3782 /* no bluetooth hardware present in system */
3783 tp_features.bluetooth = 0;
bee4cd9b 3784 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 3785 "bluetooth hardware not installed\n");
3786 }
3787
0e74dc26
HMH		 3788 if (!tp_features.bluetooth)
3789 return 1;
3790
0e74dc26 3791 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 3792 &bluetooth_tprfk_ops,
0e74dc26 3793 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 3794 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 3795 true);
3796 if (res)
3797 return res;
3798
3799 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3800 &bluetooth_attr_group);
0e74dc26 3801 if (res) {
19d337df 3802 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 3803 return res;
d6fdd1e9 3804 }
fe08bc4b 3805
0e74dc26 3806 return 0;
1da177e4
LT		 3807}
3808
d3a6ade4 3809/* procfs -------------------------------------------------------------- */
78f81cc4 3810static int bluetooth_read(char *p)
1da177e4 3811{
19d337df 3812 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, p);
1da177e4
LT		 3813}
3814
78f81cc4 3815static int bluetooth_write(char *buf)
1da177e4 3816{
19d337df 3817 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 3818}
3819
a5763f22
HMH		 3820static struct ibm_struct bluetooth_driver_data = {
3821 .name = "bluetooth",
3822 .read = bluetooth_read,
3823 .write = bluetooth_write,
d3a6ade4 3824 .exit = bluetooth_exit,
153f8220 3825 .suspend = bluetooth_suspend,
90d9d3c7 3826 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 3827};
3828
56b6aeb0
HMH		 3829/*************************************************************************
3830 * Wan subdriver
3831 */
3832
f74a27d4
HMH		 3833enum {
3834 /* ACPI GWAN/SWAN bits */
3835 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
3836 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220
HMH		 3837 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
3838 off / last state */
f74a27d4
HMH		 3839};
3840
bee4cd9b
HMH		 3841#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
3842
153f8220
HMH		 3843static void wan_suspend(pm_message_t state)
3844{
3845 /* Try to make sure radio will resume powered off */
bee4cd9b
HMH		 3846 if (!acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
3847 TP_ACPI_WGSV_PWR_OFF_ON_RESUME))
3848 vdbg_printk(TPACPI_DBG_RFKILL,
3849 "WWAN power down on resume request failed\n");
153f8220
HMH		 3850}
3851
19d337df 3852static int wan_get_status(void)
07431ec8
HMH		 3853{
3854 int status;
3855
a73f3091
HMH		 3856#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3857 if (dbg_wwanemul)
3858 return (tpacpi_wwan_emulstate) ?
19d337df 3859 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 3860#endif
3861
07431ec8
HMH		 3862 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
3863 return -EIO;
3864
0e74dc26 3865 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 3866 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 3867}
3868
19d337df 3869static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 3870{
3871 int status;
3872
bee4cd9b 3873 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 3874 "will attempt to %s wwan\n",
3875 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 3876
a73f3091
HMH		 3877#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3878 if (dbg_wwanemul) {
19d337df 3879 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 3880 return 0;
3881 }
3882#endif
3883
153f8220 3884 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
19d337df 3885 if (state == TPACPI_RFK_RADIO_ON)
153f8220 3886 status = TP_ACPI_WANCARD_RADIOSSW;
07431ec8 3887 else
153f8220 3888 status = 0;
19d337df 3889
07431ec8
HMH		 3890 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
3891 return -EIO;
3892
3893 return 0;
3894}
f74a27d4 3895
d3a6ade4
HMH		 3896/* sysfs wan enable ---------------------------------------------------- */
3897static ssize_t wan_enable_show(struct device *dev,
3898 struct device_attribute *attr,
3899 char *buf)
3900{
19d337df
JB		 3901 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
3902 attr, buf);
d3a6ade4
HMH		 3903}
3904
3905static ssize_t wan_enable_store(struct device *dev,
3906 struct device_attribute *attr,
3907 const char *buf, size_t count)
3908{
19d337df
JB		 3909 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
3910 attr, buf, count);
d3a6ade4
HMH		 3911}
3912
3913static struct device_attribute dev_attr_wan_enable =
cc4c24e1 3914 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3915 wan_enable_show, wan_enable_store);
3916
3917/* --------------------------------------------------------------------- */
3918
3919static struct attribute *wan_attributes[] = {
3920 &dev_attr_wan_enable.attr,
3921 NULL
3922};
3923
3924static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 3925 .attrs = wan_attributes,
3926};
3927
19d337df
JB		 3928static const struct tpacpi_rfk_ops wan_tprfk_ops = {
3929 .get_status = wan_get_status,
3930 .set_status = wan_set_status,
3931};
0e74dc26 3932
90d9d3c7
HMH		 3933static void wan_shutdown(void)
3934{
3935 /* Order firmware to save current state to NVRAM */
3936 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
3937 TP_ACPI_WGSV_SAVE_STATE))
3938 printk(TPACPI_NOTICE
3939 "failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 3940 else
3941 vdbg_printk(TPACPI_DBG_RFKILL,
3942 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 3943}
3944
07431ec8
HMH		 3945static void wan_exit(void)
3946{
3947 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3948 &wan_attr_group);
19d337df
JB		 3949
3950 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
3951
3952 wan_shutdown();
07431ec8
HMH		 3953}
3954
a5763f22 3955static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 3956{
d3a6ade4 3957 int res;
d6fdd1e9
HMH		 3958 int status = 0;
3959
bee4cd9b
HMH		 3960 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3961 "initializing wan subdriver\n");
fe08bc4b 3962
e0c7dfe7 3963 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3964
d8fd94d9 3965 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 3966 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
3967
bee4cd9b
HMH		 3968 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3969 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 3970 str_supported(tp_features.wan),
3971 status);
3972
a73f3091
HMH		 3973#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3974 if (dbg_wwanemul) {
3975 tp_features.wan = 1;
3976 printk(TPACPI_INFO
3977 "wwan switch emulation enabled\n");
3978 } else
3979#endif
3a872080
HMH		 3980 if (tp_features.wan &&
3981 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
3982 /* no wan hardware present in system */
3983 tp_features.wan = 0;
bee4cd9b 3984 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 3985 "wan hardware not installed\n");
3986 }
3987
0e74dc26
HMH		 3988 if (!tp_features.wan)
3989 return 1;
3990
0e74dc26 3991 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 3992 &wan_tprfk_ops,
0e74dc26 3993 RFKILL_TYPE_WWAN,
bee4cd9b 3994 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 3995 true);
3996 if (res)
3997 return res;
3998
3999 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4000 &wan_attr_group);
4001
0e74dc26 4002 if (res) {
19d337df 4003 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4004 return res;
d6fdd1e9 4005 }
fe08bc4b 4006
0e74dc26 4007 return 0;
42adb53c
JF		 4008}
4009
d3a6ade4 4010/* procfs -------------------------------------------------------------- */
42adb53c
JF		 4011static int wan_read(char *p)
4012{
19d337df 4013 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, p);
42adb53c
JF		 4014}
4015
4016static int wan_write(char *buf)
4017{
19d337df 4018 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4019}
4020
a5763f22
HMH		 4021static struct ibm_struct wan_driver_data = {
4022 .name = "wan",
4023 .read = wan_read,
4024 .write = wan_write,
d3a6ade4 4025 .exit = wan_exit,
153f8220 4026 .suspend = wan_suspend,
90d9d3c7 4027 .shutdown = wan_shutdown,
a5763f22
HMH		 4028};
4029
0045c0aa
HMH		 4030/*************************************************************************
4031 * UWB subdriver
4032 */
4033
4034enum {
4035 /* ACPI GUWB/SUWB bits */
4036 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4037 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4038};
4039
bee4cd9b
HMH		 4040#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4041
19d337df 4042static int uwb_get_status(void)
0045c0aa
HMH		 4043{
4044 int status;
4045
0045c0aa
HMH		 4046#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4047 if (dbg_uwbemul)
4048 return (tpacpi_uwb_emulstate) ?
19d337df 4049 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4050#endif
4051
4052 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4053 return -EIO;
4054
4055 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4056 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4057}
4058
19d337df 4059static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4060{
4061 int status;
4062
bee4cd9b 4063 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4064 "will attempt to %s UWB\n",
4065 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4066
0045c0aa
HMH		 4067#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4068 if (dbg_uwbemul) {
19d337df 4069 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4070 return 0;
4071 }
4072#endif
4073
19d337df
JB		 4074 if (state == TPACPI_RFK_RADIO_ON)
4075 status = TP_ACPI_UWB_RADIOSSW;
4076 else
4077 status = 0;
4078
0045c0aa
HMH		 4079 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4080 return -EIO;
4081
0045c0aa
HMH		 4082 return 0;
4083}
4084
4085/* --------------------------------------------------------------------- */
4086
19d337df
JB		 4087static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4088 .get_status = uwb_get_status,
4089 .set_status = uwb_set_status,
4090};
0045c0aa
HMH		 4091
4092static void uwb_exit(void)
4093{
19d337df 4094 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4095}
4096
4097static int __init uwb_init(struct ibm_init_struct *iibm)
4098{
4099 int res;
4100 int status = 0;
4101
bee4cd9b
HMH		 4102 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4103 "initializing uwb subdriver\n");
0045c0aa
HMH		 4104
4105 TPACPI_ACPIHANDLE_INIT(hkey);
4106
4107 tp_features.uwb = hkey_handle &&
4108 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4109
bee4cd9b
HMH		 4110 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4111 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4112 str_supported(tp_features.uwb),
4113 status);
4114
4115#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4116 if (dbg_uwbemul) {
4117 tp_features.uwb = 1;
4118 printk(TPACPI_INFO
4119 "uwb switch emulation enabled\n");
4120 } else
4121#endif
4122 if (tp_features.uwb &&
4123 !(status & TP_ACPI_UWB_HWPRESENT)) {
4124 /* no uwb hardware present in system */
4125 tp_features.uwb = 0;
4126 dbg_printk(TPACPI_DBG_INIT,
4127 "uwb hardware not installed\n");
4128 }
4129
4130 if (!tp_features.uwb)
4131 return 1;
4132
4133 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4134 &uwb_tprfk_ops,
0045c0aa 4135 RFKILL_TYPE_UWB,
bee4cd9b 4136 TPACPI_RFK_UWB_SW_NAME,
19d337df 4137 false);
0045c0aa
HMH		 4138 return res;
4139}
4140
4141static struct ibm_struct uwb_driver_data = {
4142 .name = "uwb",
4143 .exit = uwb_exit,
4144 .flags.experimental = 1,
4145};
4146
56b6aeb0
HMH		 4147/*************************************************************************
4148 * Video subdriver
4149 */
4150
d7c1d17d
HMH		 4151#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4152
f74a27d4
HMH		 4153enum video_access_mode {
4154 TPACPI_VIDEO_NONE = 0,
4155 TPACPI_VIDEO_570, /* 570 */
4156 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4157 TPACPI_VIDEO_NEW, /* all others */
4158};
4159
4160enum { /* video status flags, based on VIDEO_570 */
4161 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4162 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4163 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4164};
4165
4166enum { /* TPACPI_VIDEO_570 constants */
4167 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4168 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4169 * video_status_flags */
4170 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4171 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4172};
4173
9a8e1738
HMH		 4174static enum video_access_mode video_supported;
4175static int video_orig_autosw;
78f81cc4 4176
f74a27d4
HMH		 4177static int video_autosw_get(void);
4178static int video_autosw_set(int enable);
4179
e0c7dfe7 4180TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4181
a5763f22 4182static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4183{
78f81cc4
BD		 4184 int ivga;
4185
fe08bc4b
HMH		 4186 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4187
e0c7dfe7
HMH		 4188 TPACPI_ACPIHANDLE_INIT(vid);
4189 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4190
78f81cc4
BD		 4191 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4192 /* G41, assume IVGA doesn't change */
4193 vid_handle = vid2_handle;
4194
4195 if (!vid_handle)
4196 /* video switching not supported on R30, R31 */
efa27145 4197 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 4198 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
4199 /* 570 */
efa27145 4200 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 4201 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
4202 /* 600e/x, 770e, 770x */
efa27145 4203 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4204 else
4205 /* all others */
efa27145 4206 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4207
fe08bc4b
HMH		 4208 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4209 str_supported(video_supported != TPACPI_VIDEO_NONE),
4210 video_supported);
4211
5fba344c 4212 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 4213}
4214
56b6aeb0
HMH		 4215static void video_exit(void)
4216{
83f34724
HMH		 4217 dbg_printk(TPACPI_DBG_EXIT,
4218 "restoring original video autoswitch mode\n");
4219 if (video_autosw_set(video_orig_autosw))
e0c7dfe7 4220 printk(TPACPI_ERR "error while trying to restore original "
83f34724 4221 "video autoswitch mode\n");
56b6aeb0
HMH		 4222}
4223
83f34724 4224static int video_outputsw_get(void)
1da177e4
LT		 4225{
4226 int status = 0;
4227 int i;
4228
83f34724
HMH		 4229 switch (video_supported) {
4230 case TPACPI_VIDEO_570:
4231 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4232 TP_ACPI_VIDEO_570_PHSCMD))
4233 return -EIO;
4234 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4235 break;
4236 case TPACPI_VIDEO_770:
4237 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4238 return -EIO;
4239 if (i)
4240 status |= TP_ACPI_VIDEO_S_LCD;
4241 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4242 return -EIO;
4243 if (i)
4244 status |= TP_ACPI_VIDEO_S_CRT;
4245 break;
4246 case TPACPI_VIDEO_NEW:
4247 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4248 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4249 return -EIO;
4250 if (i)
4251 status |= TP_ACPI_VIDEO_S_CRT;
4252
4253 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4254 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4255 return -EIO;
4256 if (i)
4257 status |= TP_ACPI_VIDEO_S_LCD;
4258 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4259 return -EIO;
4260 if (i)
4261 status |= TP_ACPI_VIDEO_S_DVI;
4262 break;
4263 default:
4264 return -ENOSYS;
78f81cc4
BD		 4265 }
4266
4267 return status;
4268}
1da177e4 4269
83f34724 4270static int video_outputsw_set(int status)
78f81cc4 4271{
83f34724
HMH		 4272 int autosw;
4273 int res = 0;
4274
4275 switch (video_supported) {
4276 case TPACPI_VIDEO_570:
4277 res = acpi_evalf(NULL, NULL,
4278 "\\_SB.PHS2", "vdd",
4279 TP_ACPI_VIDEO_570_PHS2CMD,
4280 status | TP_ACPI_VIDEO_570_PHS2SET);
4281 break;
4282 case TPACPI_VIDEO_770:
4283 autosw = video_autosw_get();
4284 if (autosw < 0)
4285 return autosw;
1da177e4 4286
83f34724
HMH		 4287 res = video_autosw_set(1);
4288 if (res)
4289 return res;
4290 res = acpi_evalf(vid_handle, NULL,
4291 "ASWT", "vdd", status * 0x100, 0);
4292 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 4293 printk(TPACPI_ERR
4294 "video auto-switch left enabled due to error\n");
83f34724
HMH		 4295 return -EIO;
4296 }
4297 break;
4298 case TPACPI_VIDEO_NEW:
4299 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 4300 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 4301 break;
4302 default:
4303 return -ENOSYS;
4304 }
1da177e4 4305
83f34724 4306 return (res)? 0 : -EIO;
1da177e4
LT		 4307}
4308
83f34724 4309static int video_autosw_get(void)
78f81cc4 4310{
83f34724 4311 int autosw = 0;
78f81cc4 4312
83f34724
HMH		 4313 switch (video_supported) {
4314 case TPACPI_VIDEO_570:
4315 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4316 return -EIO;
4317 break;
4318 case TPACPI_VIDEO_770:
4319 case TPACPI_VIDEO_NEW:
4320 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4321 return -EIO;
4322 break;
4323 default:
4324 return -ENOSYS;
4325 }
78f81cc4 4326
83f34724 4327 return autosw & 1;
78f81cc4
BD		 4328}
4329
83f34724 4330static int video_autosw_set(int enable)
78f81cc4 4331{
83f34724
HMH		 4332 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4333 return -EIO;
4334 return 0;
78f81cc4
BD		 4335}
4336
83f34724 4337static int video_outputsw_cycle(void)
78f81cc4 4338{
83f34724
HMH		 4339 int autosw = video_autosw_get();
4340 int res;
78f81cc4 4341
83f34724
HMH		 4342 if (autosw < 0)
4343 return autosw;
78f81cc4 4344
83f34724
HMH		 4345 switch (video_supported) {
4346 case TPACPI_VIDEO_570:
4347 res = video_autosw_set(1);
4348 if (res)
4349 return res;
4350 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4351 break;
4352 case TPACPI_VIDEO_770:
4353 case TPACPI_VIDEO_NEW:
4354 res = video_autosw_set(1);
4355 if (res)
4356 return res;
4357 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4358 break;
4359 default:
4360 return -ENOSYS;
4361 }
4362 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 4363 printk(TPACPI_ERR
4364 "video auto-switch left enabled due to error\n");
83f34724 4365 return -EIO;
78f81cc4
BD		 4366 }
4367
83f34724
HMH		 4368 return (res)? 0 : -EIO;
4369}
4370
4371static int video_expand_toggle(void)
4372{
4373 switch (video_supported) {
4374 case TPACPI_VIDEO_570:
4375 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4376 0 : -EIO;
4377 case TPACPI_VIDEO_770:
4378 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4379 0 : -EIO;
4380 case TPACPI_VIDEO_NEW:
4381 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4382 0 : -EIO;
4383 default:
4384 return -ENOSYS;
4385 }
4386 /* not reached */
78f81cc4
BD		 4387}
4388
56b6aeb0
HMH		 4389static int video_read(char *p)
4390{
83f34724 4391 int status, autosw;
56b6aeb0
HMH		 4392 int len = 0;
4393
83f34724 4394 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 4395 len += sprintf(p + len, "status:\t\tnot supported\n");
4396 return len;
4397 }
4398
83f34724
HMH		 4399 status = video_outputsw_get();
4400 if (status < 0)
4401 return status;
4402
4403 autosw = video_autosw_get();
4404 if (autosw < 0)
4405 return autosw;
4406
56b6aeb0
HMH		 4407 len += sprintf(p + len, "status:\t\tsupported\n");
4408 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
4409 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4410 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 4411 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
4412 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
4413 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
4414 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 4415 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 4416 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
4417 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
4418 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
4419
4420 return len;
4421}
4422
78f81cc4 4423static int video_write(char *buf)
1da177e4
LT		 4424{
4425 char *cmd;
4426 int enable, disable, status;
83f34724 4427 int res;
1da177e4 4428
83f34724 4429 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4430 return -ENODEV;
4431
83f34724
HMH		 4432 enable = 0;
4433 disable = 0;
1da177e4
LT		 4434
4435 while ((cmd = next_cmd(&buf))) {
4436 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4437 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4438 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4439 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4440 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4441 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4442 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4443 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4444 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4445 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4446 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4447 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4448 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4449 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4450 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4451 res = video_autosw_set(1);
4452 if (res)
4453 return res;
1da177e4 4454 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4455 res = video_autosw_set(0);
4456 if (res)
4457 return res;
1da177e4 4458 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4459 res = video_outputsw_cycle();
4460 if (res)
4461 return res;
1da177e4 4462 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4463 res = video_expand_toggle();
4464 if (res)
4465 return res;
1da177e4
LT		 4466 } else
4467 return -EINVAL;
4468 }
4469
4470 if (enable || disable) {
83f34724
HMH		 4471 status = video_outputsw_get();
4472 if (status < 0)
4473 return status;
4474 res = video_outputsw_set((status & ~disable) | enable);
4475 if (res)
4476 return res;
1da177e4
LT		 4477 }
4478
4479 return 0;
4480}
4481
a5763f22
HMH		 4482static struct ibm_struct video_driver_data = {
4483 .name = "video",
4484 .read = video_read,
4485 .write = video_write,
4486 .exit = video_exit,
4487};
4488
d7c1d17d
HMH		 4489#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4490
56b6aeb0
HMH		 4491/*************************************************************************
4492 * Light (thinklight) subdriver
4493 */
1da177e4 4494
e0c7dfe7
HMH		 4495TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4496TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4497
4fa6811b
HMH		 4498static int light_get_status(void)
4499{
4500 int status = 0;
4501
4502 if (tp_features.light_status) {
4503 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4504 return -EIO;
4505 return (!!status);
4506 }
4507
4508 return -ENXIO;
4509}
4510
4511static int light_set_status(int status)
4512{
4513 int rc;
4514
4515 if (tp_features.light) {
4516 if (cmos_handle) {
4517 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4518 (status)?
4519 TP_CMOS_THINKLIGHT_ON :
4520 TP_CMOS_THINKLIGHT_OFF);
4521 } else {
4522 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4523 (status)? 1 : 0);
4524 }
4525 return (rc)? 0 : -EIO;
4526 }
4527
4528 return -ENXIO;
4529}
4530
e306501d
HMH		 4531static void light_set_status_worker(struct work_struct *work)
4532{
4533 struct tpacpi_led_classdev *data =
4534 container_of(work, struct tpacpi_led_classdev, work);
4535
4536 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 4537 light_set_status((data->new_state != TPACPI_LED_OFF));
e306501d
HMH		 4538}
4539
4540static void light_sysfs_set(struct led_classdev *led_cdev,
4541 enum led_brightness brightness)
4542{
4543 struct tpacpi_led_classdev *data =
4544 container_of(led_cdev,
4545 struct tpacpi_led_classdev,
4546 led_classdev);
75bd3bf2
HMH		 4547 data->new_state = (brightness != LED_OFF) ?
4548 TPACPI_LED_ON : TPACPI_LED_OFF;
e0e3c061 4549 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4550}
4551
4552static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4553{
4554 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4555}
4556
4557static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4558 .led_classdev = {
4559 .name = "tpacpi::thinklight",
4560 .brightness_set = &light_sysfs_set,
4561 .brightness_get = &light_sysfs_get,
4562 }
4563};
4564
a5763f22 4565static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4566{
9c0a76e1 4567 int rc;
e306501d 4568
fe08bc4b
HMH		 4569 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4570
e0c7dfe7
HMH		 4571 TPACPI_ACPIHANDLE_INIT(ledb);
4572 TPACPI_ACPIHANDLE_INIT(lght);
4573 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4574 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4575
78f81cc4 4576 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4577 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4578
d8fd94d9 4579 if (tp_features.light)
78f81cc4
BD		 4580 /* light status not supported on
4581 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4582 tp_features.light_status =
4583 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4584
9c0a76e1
HMH		 4585 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4586 str_supported(tp_features.light),
4587 str_supported(tp_features.light_status));
fe08bc4b 4588
9c0a76e1
HMH		 4589 if (!tp_features.light)
4590 return 1;
4591
4592 rc = led_classdev_register(&tpacpi_pdev->dev,
4593 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4594
4595 if (rc < 0) {
4596 tp_features.light = 0;
4597 tp_features.light_status = 0;
9c0a76e1
HMH		 4598 } else {
4599 rc = 0;
e306501d 4600 }
9c0a76e1 4601
e306501d
HMH		 4602 return rc;
4603}
4604
4605static void light_exit(void)
4606{
4607 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4608 if (work_pending(&tpacpi_led_thinklight.work))
e0e3c061 4609 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4610}
4611
78f81cc4 4612static int light_read(char *p)
1da177e4
LT		 4613{
4614 int len = 0;
4fa6811b 4615 int status;
1da177e4 4616
d8fd94d9 4617 if (!tp_features.light) {
78f81cc4 4618 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 4619 } else if (!tp_features.light_status) {
78f81cc4
BD		 4620 len += sprintf(p + len, "status:\t\tunknown\n");
4621 len += sprintf(p + len, "commands:\ton, off\n");
4622 } else {
4fa6811b
HMH		 4623 status = light_get_status();
4624 if (status < 0)
4625 return status;
1da177e4 4626 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 4627 len += sprintf(p + len, "commands:\ton, off\n");
4628 }
1da177e4
LT		 4629
4630 return len;
4631}
4632
78f81cc4 4633static int light_write(char *buf)
1da177e4 4634{
1da177e4 4635 char *cmd;
4fa6811b 4636 int newstatus = 0;
78f81cc4 4637
d8fd94d9 4638 if (!tp_features.light)
78f81cc4
BD		 4639 return -ENODEV;
4640
1da177e4
LT		 4641 while ((cmd = next_cmd(&buf))) {
4642 if (strlencmp(cmd, "on") == 0) {
4fa6811b 4643 newstatus = 1;
1da177e4 4644 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 4645 newstatus = 0;
1da177e4
LT		 4646 } else
4647 return -EINVAL;
1da177e4
LT		 4648 }
4649
4fa6811b 4650 return light_set_status(newstatus);
1da177e4
LT		 4651}
4652
a5763f22
HMH		 4653static struct ibm_struct light_driver_data = {
4654 .name = "light",
4655 .read = light_read,
4656 .write = light_write,
e306501d 4657 .exit = light_exit,
a5763f22
HMH		 4658};
4659
56b6aeb0
HMH		 4660/*************************************************************************
4661 * CMOS subdriver
4662 */
4663
b616004c
HMH		 4664/* sysfs cmos_command -------------------------------------------------- */
4665static ssize_t cmos_command_store(struct device *dev,
4666 struct device_attribute *attr,
4667 const char *buf, size_t count)
4668{
4669 unsigned long cmos_cmd;
4670 int res;
4671
4672 if (parse_strtoul(buf, 21, &cmos_cmd))
4673 return -EINVAL;
4674
4675 res = issue_thinkpad_cmos_command(cmos_cmd);
4676 return (res)? res : count;
4677}
4678
4679static struct device_attribute dev_attr_cmos_command =
4680 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4681
4682/* --------------------------------------------------------------------- */
4683
a5763f22 4684static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 4685{
b616004c
HMH		 4686 int res;
4687
fe08bc4b
HMH		 4688 vdbg_printk(TPACPI_DBG_INIT,
4689 "initializing cmos commands subdriver\n");
4690
e0c7dfe7 4691 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 4692
fe08bc4b
HMH		 4693 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4694 str_supported(cmos_handle != NULL));
b616004c
HMH		 4695
4696 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4697 if (res)
4698 return res;
4699
5fba344c
HMH		 4700 return (cmos_handle)? 0 : 1;
4701}
4702
b616004c
HMH		 4703static void cmos_exit(void)
4704{
4705 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4706}
4707
78f81cc4 4708static int cmos_read(char *p)
1da177e4
LT		 4709{
4710 int len = 0;
4711
78f81cc4
BD		 4712 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4713 R30, R31, T20-22, X20-21 */
1da177e4
LT		 4714 if (!cmos_handle)
4715 len += sprintf(p + len, "status:\t\tnot supported\n");
4716 else {
4717 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 4718 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 4719 }
4720
4721 return len;
4722}
4723
78f81cc4 4724static int cmos_write(char *buf)
1da177e4
LT		 4725{
4726 char *cmd;
c9bea99c 4727 int cmos_cmd, res;
1da177e4
LT		 4728
4729 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 4730 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4731 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 4732 /* cmos_cmd set */
4733 } else
4734 return -EINVAL;
4735
c9bea99c
HMH		 4736 res = issue_thinkpad_cmos_command(cmos_cmd);
4737 if (res)
4738 return res;
1da177e4
LT		 4739 }
4740
4741 return 0;
78f81cc4
BD		 4742}
4743
a5763f22
HMH		 4744static struct ibm_struct cmos_driver_data = {
4745 .name = "cmos",
4746 .read = cmos_read,
4747 .write = cmos_write,
b616004c 4748 .exit = cmos_exit,
a5763f22 4749};
56b6aeb0
HMH		 4750
4751/*************************************************************************
4752 * LED subdriver
4753 */
4754
f74a27d4
HMH		 4755enum led_access_mode {
4756 TPACPI_LED_NONE = 0,
4757 TPACPI_LED_570, /* 570 */
4758 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4759 TPACPI_LED_NEW, /* all others */
4760};
4761
4762enum { /* For TPACPI_LED_OLD */
4763 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4764 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4765 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4766};
4767
9a8e1738 4768static enum led_access_mode led_supported;
78f81cc4 4769
e0c7dfe7 4770TPACPI_HANDLE(led, ec, "SLED", /* 570 */
35ff8b9f
HMH		 4771 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4772 /* T20-22, X20-21 */
56b6aeb0
HMH		 4773 "LED", /* all others */
4774 ); /* R30, R31 */
4775
f21179a4 4776#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 4777static struct tpacpi_led_classdev *tpacpi_leds;
4778static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 4779static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 4780 /* there's a limit of 19 chars + NULL before 2.6.26 */
4781 "tpacpi::power",
4782 "tpacpi:orange:batt",
4783 "tpacpi:green:batt",
4784 "tpacpi::dock_active",
4785 "tpacpi::bay_active",
4786 "tpacpi::dock_batt",
4787 "tpacpi::unknown_led",
4788 "tpacpi::standby",
f21179a4
HMH		 4789 "tpacpi::dock_status1",
4790 "tpacpi::dock_status2",
4791 "tpacpi::unknown_led2",
4792 "tpacpi::unknown_led3",
4793 "tpacpi::thinkvantage",
af116101 4794};
f21179a4 4795#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 4796
4797static inline bool tpacpi_is_led_restricted(const unsigned int led)
4798{
4799#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4800 return false;
4801#else
f21179a4 4802 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 4803#endif
4804}
af116101 4805
24e45bbe 4806static int led_get_status(const unsigned int led)
4fa6811b
HMH		 4807{
4808 int status;
af116101 4809 enum led_status_t led_s;
4fa6811b
HMH		 4810
4811 switch (led_supported) {
4812 case TPACPI_LED_570:
4813 if (!acpi_evalf(ec_handle,
4814 &status, "GLED", "dd", 1 << led))
4815 return -EIO;
af116101 4816 led_s = (status == 0)?
4fa6811b
HMH		 4817 TPACPI_LED_OFF :
4818 ((status == 1)?
4819 TPACPI_LED_ON :
4820 TPACPI_LED_BLINK);
af116101
HMH		 4821 tpacpi_led_state_cache[led] = led_s;
4822 return led_s;
4fa6811b
HMH		 4823 default:
4824 return -ENXIO;
4825 }
4826
4827 /* not reached */
4828}
4829
24e45bbe
HMH		 4830static int led_set_status(const unsigned int led,
4831 const enum led_status_t ledstatus)
4fa6811b
HMH		 4832{
4833 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 4834 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
4835 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 4836
4837 int rc = 0;
4838
4839 switch (led_supported) {
4840 case TPACPI_LED_570:
24e45bbe 4841 /* 570 */
a4d5effc 4842 if (unlikely(led > 7))
24e45bbe 4843 return -EINVAL;
a4d5effc
HMH		 4844 if (unlikely(tpacpi_is_led_restricted(led)))
4845 return -EPERM;
24e45bbe
HMH		 4846 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4847 (1 << led), led_sled_arg1[ledstatus]))
4848 rc = -EIO;
4849 break;
4fa6811b 4850 case TPACPI_LED_OLD:
24e45bbe 4851 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 4852 if (unlikely(led > 7))
24e45bbe 4853 return -EINVAL;
a4d5effc
HMH		 4854 if (unlikely(tpacpi_is_led_restricted(led)))
4855 return -EPERM;
24e45bbe
HMH		 4856 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
4857 if (rc >= 0)
4858 rc = ec_write(TPACPI_LED_EC_HLBL,
4859 (ledstatus == TPACPI_LED_BLINK) << led);
4860 if (rc >= 0)
4861 rc = ec_write(TPACPI_LED_EC_HLCL,
4862 (ledstatus != TPACPI_LED_OFF) << led);
4863 break;
4fa6811b 4864 case TPACPI_LED_NEW:
24e45bbe 4865 /* all others */
a4d5effc
HMH		 4866 if (unlikely(led >= TPACPI_LED_NUMLEDS))
4867 return -EINVAL;
4868 if (unlikely(tpacpi_is_led_restricted(led)))
4869 return -EPERM;
24e45bbe
HMH		 4870 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4871 led, led_led_arg1[ledstatus]))
4872 rc = -EIO;
4873 break;
4fa6811b
HMH		 4874 default:
4875 rc = -ENXIO;
4876 }
4877
af116101
HMH		 4878 if (!rc)
4879 tpacpi_led_state_cache[led] = ledstatus;
4880
4881 return rc;
4882}
4883
af116101
HMH		 4884static void led_set_status_worker(struct work_struct *work)
4885{
4886 struct tpacpi_led_classdev *data =
4887 container_of(work, struct tpacpi_led_classdev, work);
4888
4889 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 4890 led_set_status(data->led, data->new_state);
af116101
HMH		 4891}
4892
4893static void led_sysfs_set(struct led_classdev *led_cdev,
4894 enum led_brightness brightness)
4895{
4896 struct tpacpi_led_classdev *data = container_of(led_cdev,
4897 struct tpacpi_led_classdev, led_classdev);
4898
75bd3bf2
HMH		 4899 if (brightness == LED_OFF)
4900 data->new_state = TPACPI_LED_OFF;
4901 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
4902 data->new_state = TPACPI_LED_ON;
4903 else
4904 data->new_state = TPACPI_LED_BLINK;
4905
e0e3c061 4906 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4907}
4908
4909static int led_sysfs_blink_set(struct led_classdev *led_cdev,
4910 unsigned long *delay_on, unsigned long *delay_off)
4911{
4912 struct tpacpi_led_classdev *data = container_of(led_cdev,
4913 struct tpacpi_led_classdev, led_classdev);
4914
4915 /* Can we choose the flash rate? */
4916 if (*delay_on == 0 && *delay_off == 0) {
4917 /* yes. set them to the hardware blink rate (1 Hz) */
4918 *delay_on = 500; /* ms */
4919 *delay_off = 500; /* ms */
4920 } else if ((*delay_on != 500) || (*delay_off != 500))
4921 return -EINVAL;
4922
75bd3bf2 4923 data->new_state = TPACPI_LED_BLINK;
e0e3c061 4924 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4925
4926 return 0;
4927}
4928
4929static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
4930{
4931 int rc;
4932
4933 struct tpacpi_led_classdev *data = container_of(led_cdev,
4934 struct tpacpi_led_classdev, led_classdev);
4935
4936 rc = led_get_status(data->led);
4937
4938 if (rc == TPACPI_LED_OFF || rc < 0)
4939 rc = LED_OFF; /* no error handling in led class :( */
4940 else
4941 rc = LED_FULL;
4942
4fa6811b
HMH		 4943 return rc;
4944}
4945
af116101
HMH		 4946static void led_exit(void)
4947{
4948 unsigned int i;
4949
4950 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4951 if (tpacpi_leds[i].led_classdev.name)
4952 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
4953 }
4954
4955 kfree(tpacpi_leds);
af116101
HMH		 4956}
4957
a4d5effc
HMH		 4958static int __init tpacpi_init_led(unsigned int led)
4959{
4960 int rc;
4961
4962 tpacpi_leds[led].led = led;
4963
f21179a4
HMH		 4964 /* LEDs with no name don't get registered */
4965 if (!tpacpi_led_names[led])
4966 return 0;
4967
a4d5effc
HMH		 4968 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
4969 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
4970 if (led_supported == TPACPI_LED_570)
4971 tpacpi_leds[led].led_classdev.brightness_get =
4972 &led_sysfs_get;
4973
4974 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
4975
4976 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
4977
4978 rc = led_classdev_register(&tpacpi_pdev->dev,
4979 &tpacpi_leds[led].led_classdev);
4980 if (rc < 0)
4981 tpacpi_leds[led].led_classdev.name = NULL;
4982
4983 return rc;
4984}
4985
f21179a4
HMH		 4986static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
4987 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
4988 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
4989 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
4990
4991 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
4992 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
4993 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
4994 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
4995 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
4996 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
4997 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
4998 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
4999
5000 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5001 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5002 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5003 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5004 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5005
5006 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5007 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5008 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5009 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5010
5011 /* (1) - may have excess leds enabled on MSB */
5012
5013 /* Defaults (order matters, keep last, don't reorder!) */
5014 { /* Lenovo */
5015 .vendor = PCI_VENDOR_ID_LENOVO,
5016 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5017 .quirks = 0x1fffU,
5018 },
5019 { /* IBM ThinkPads with no EC version string */
5020 .vendor = PCI_VENDOR_ID_IBM,
5021 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5022 .quirks = 0x00ffU,
5023 },
5024 { /* IBM ThinkPads with EC version string */
5025 .vendor = PCI_VENDOR_ID_IBM,
5026 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5027 .quirks = 0x00bfU,
5028 },
5029};
5030
5031#undef TPACPI_LEDQ_IBM
5032#undef TPACPI_LEDQ_LNV
5033
a5763f22 5034static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 5035{
af116101
HMH		 5036 unsigned int i;
5037 int rc;
f21179a4 5038 unsigned long useful_leds;
af116101 5039
fe08bc4b
HMH		 5040 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5041
e0c7dfe7 5042 TPACPI_ACPIHANDLE_INIT(led);
5fba344c 5043
78f81cc4
BD		 5044 if (!led_handle)
5045 /* led not supported on R30, R31 */
efa27145 5046 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 5047 else if (strlencmp(led_path, "SLED") == 0)
5048 /* 570 */
efa27145 5049 led_supported = TPACPI_LED_570;
78f81cc4
BD		 5050 else if (strlencmp(led_path, "SYSL") == 0)
5051 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 5052 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 5053 else
5054 /* all others */
efa27145 5055 led_supported = TPACPI_LED_NEW;
78f81cc4 5056
fe08bc4b
HMH		 5057 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5058 str_supported(led_supported), led_supported);
5059
f21179a4
HMH		 5060 if (led_supported == TPACPI_LED_NONE)
5061 return 1;
5062
af116101
HMH		 5063 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
5064 GFP_KERNEL);
5065 if (!tpacpi_leds) {
5066 printk(TPACPI_ERR "Out of memory for LED data\n");
5067 return -ENOMEM;
5068 }
5069
f21179a4
HMH		 5070 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5071 ARRAY_SIZE(led_useful_qtable));
5072
af116101 5073 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
f21179a4
HMH		 5074 if (!tpacpi_is_led_restricted(i) &&
5075 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 5076 rc = tpacpi_init_led(i);
5077 if (rc < 0) {
5078 led_exit();
5079 return rc;
5080 }
af116101
HMH		 5081 }
5082 }
5083
a4d5effc 5084#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
f21179a4
HMH		 5085 printk(TPACPI_NOTICE
5086 "warning: userspace override of important "
5087 "firmware LEDs is enabled\n");
a4d5effc 5088#endif
f21179a4 5089 return 0;
78f81cc4
BD		 5090}
5091
4fa6811b
HMH		 5092#define str_led_status(s) \
5093 ((s) == TPACPI_LED_OFF ? "off" : \
5094 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4
BD		 5095
5096static int led_read(char *p)
1da177e4
LT		 5097{
5098 int len = 0;
5099
78f81cc4
BD		 5100 if (!led_supported) {
5101 len += sprintf(p + len, "status:\t\tnot supported\n");
5102 return len;
5103 }
5104 len += sprintf(p + len, "status:\t\tsupported\n");
5105
efa27145 5106 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5107 /* 570 */
5108 int i, status;
5109 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5110 status = led_get_status(i);
5111 if (status < 0)
78f81cc4
BD		 5112 return -EIO;
5113 len += sprintf(p + len, "%d:\t\t%s\n",
4fa6811b 5114 i, str_led_status(status));
78f81cc4
BD		 5115 }
5116 }
5117
1da177e4 5118 len += sprintf(p + len, "commands:\t"
f21179a4 5119 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4
LT		 5120
5121 return len;
5122}
5123
78f81cc4 5124static int led_write(char *buf)
1da177e4
LT		 5125{
5126 char *cmd;
4fa6811b
HMH		 5127 int led, rc;
5128 enum led_status_t s;
78f81cc4
BD		 5129
5130 if (!led_supported)
5131 return -ENODEV;
1da177e4
LT		 5132
5133 while ((cmd = next_cmd(&buf))) {
f21179a4 5134 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15)
1da177e4
LT		 5135 return -EINVAL;
5136
78f81cc4 5137 if (strstr(cmd, "off")) {
4fa6811b 5138 s = TPACPI_LED_OFF;
1da177e4 5139 } else if (strstr(cmd, "on")) {
4fa6811b 5140 s = TPACPI_LED_ON;
78f81cc4 5141 } else if (strstr(cmd, "blink")) {
4fa6811b 5142 s = TPACPI_LED_BLINK;
78f81cc4 5143 } else {
4fa6811b 5144 return -EINVAL;
78f81cc4 5145 }
4fa6811b
HMH		 5146
5147 rc = led_set_status(led, s);
5148 if (rc < 0)
5149 return rc;
78f81cc4
BD		 5150 }
5151
5152 return 0;
5153}
5154
a5763f22
HMH		 5155static struct ibm_struct led_driver_data = {
5156 .name = "led",
5157 .read = led_read,
5158 .write = led_write,
af116101 5159 .exit = led_exit,
a5763f22
HMH		 5160};
5161
56b6aeb0
HMH		 5162/*************************************************************************
5163 * Beep subdriver
5164 */
5165
e0c7dfe7 5166TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 5167
60201732
HMH		 5168#define TPACPI_BEEP_Q1 0x0001
5169
5170static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5171 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5172 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5173};
5174
a5763f22 5175static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 5176{
60201732
HMH		 5177 unsigned long quirks;
5178
fe08bc4b
HMH		 5179 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5180
e0c7dfe7 5181 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 5182
fe08bc4b
HMH		 5183 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5184 str_supported(beep_handle != NULL));
5185
60201732
HMH		 5186 quirks = tpacpi_check_quirks(beep_quirk_table,
5187 ARRAY_SIZE(beep_quirk_table));
5188
5189 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5190
5fba344c
HMH		 5191 return (beep_handle)? 0 : 1;
5192}
5193
78f81cc4
BD		 5194static int beep_read(char *p)
5195{
5196 int len = 0;
5197
5198 if (!beep_handle)
5199 len += sprintf(p + len, "status:\t\tnot supported\n");
5200 else {
5201 len += sprintf(p + len, "status:\t\tsupported\n");
5202 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
5203 }
5204
5205 return len;
5206}
5207
5208static int beep_write(char *buf)
5209{
5210 char *cmd;
5211 int beep_cmd;
5212
5213 if (!beep_handle)
5214 return -ENODEV;
5215
5216 while ((cmd = next_cmd(&buf))) {
5217 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5218 beep_cmd >= 0 && beep_cmd <= 17) {
5219 /* beep_cmd set */
5220 } else
5221 return -EINVAL;
60201732
HMH		 5222 if (tp_features.beep_needs_two_args) {
5223 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5224 beep_cmd, 0))
5225 return -EIO;
5226 } else {
5227 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5228 beep_cmd))
5229 return -EIO;
5230 }
78f81cc4
BD		 5231 }
5232
5233 return 0;
5234}
5235
a5763f22
HMH		 5236static struct ibm_struct beep_driver_data = {
5237 .name = "beep",
5238 .read = beep_read,
5239 .write = beep_write,
5240};
5241
56b6aeb0
HMH		 5242/*************************************************************************
5243 * Thermal subdriver
5244 */
78f81cc4 5245
f74a27d4
HMH		 5246enum thermal_access_mode {
5247 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5248 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5249 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5250 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5251 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5252};
5253
5254enum { /* TPACPI_THERMAL_TPEC_* */
5255 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5256 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5257 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
5258};
5259
5260#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5261struct ibm_thermal_sensors_struct {
5262 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5263};
5264
a26f878a 5265static enum thermal_access_mode thermal_read_mode;
78f81cc4 5266
b21a15f6
HMH		 5267/* idx is zero-based */
5268static int thermal_get_sensor(int idx, s32 *value)
5269{
5270 int t;
5271 s8 tmp;
5272 char tmpi[5];
5273
5274 t = TP_EC_THERMAL_TMP0;
5275
5276 switch (thermal_read_mode) {
5277#if TPACPI_MAX_THERMAL_SENSORS >= 16
5278 case TPACPI_THERMAL_TPEC_16:
5279 if (idx >= 8 && idx <= 15) {
5280 t = TP_EC_THERMAL_TMP8;
5281 idx -= 8;
5282 }
5283 /* fallthrough */
5284#endif
5285 case TPACPI_THERMAL_TPEC_8:
5286 if (idx <= 7) {
5287 if (!acpi_ec_read(t + idx, &tmp))
5288 return -EIO;
5289 *value = tmp * 1000;
5290 return 0;
5291 }
5292 break;
5293
5294 case TPACPI_THERMAL_ACPI_UPDT:
5295 if (idx <= 7) {
5296 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5297 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5298 return -EIO;
5299 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5300 return -EIO;
5301 *value = (t - 2732) * 100;
5302 return 0;
5303 }
5304 break;
5305
5306 case TPACPI_THERMAL_ACPI_TMP07:
5307 if (idx <= 7) {
5308 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5309 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5310 return -EIO;
5311 if (t > 127 || t < -127)
5312 t = TP_EC_THERMAL_TMP_NA;
5313 *value = t * 1000;
5314 return 0;
5315 }
5316 break;
5317
5318 case TPACPI_THERMAL_NONE:
5319 default:
5320 return -ENOSYS;
5321 }
5322
5323 return -EINVAL;
5324}
5325
5326static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5327{
5328 int res, i;
5329 int n;
5330
5331 n = 8;
5332 i = 0;
5333
5334 if (!s)
5335 return -EINVAL;
5336
5337 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5338 n = 16;
5339
35ff8b9f 5340 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5341 res = thermal_get_sensor(i, &s->temp[i]);
5342 if (res)
5343 return res;
5344 }
5345
5346 return n;
5347}
f74a27d4 5348
2c37aa4e
HMH		 5349/* sysfs temp##_input -------------------------------------------------- */
5350
5351static ssize_t thermal_temp_input_show(struct device *dev,
5352 struct device_attribute *attr,
5353 char *buf)
5354{
5355 struct sensor_device_attribute *sensor_attr =
5356 to_sensor_dev_attr(attr);
5357 int idx = sensor_attr->index;
5358 s32 value;
5359 int res;
5360
5361 res = thermal_get_sensor(idx, &value);
5362 if (res)
5363 return res;
5364 if (value == TP_EC_THERMAL_TMP_NA * 1000)
5365 return -ENXIO;
5366
5367 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5368}
5369
5370#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5371 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5372 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5373
5374static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5375 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5376 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5377 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5378 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5379 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5380 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5381 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5382 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5383 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5384 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5385 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5386 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5387 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5388 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5389 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5390 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5391};
5392
5393#define THERMAL_ATTRS(X) \
5394 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5395
5396static struct attribute *thermal_temp_input_attr[] = {
5397 THERMAL_ATTRS(8),
5398 THERMAL_ATTRS(9),
5399 THERMAL_ATTRS(10),
5400 THERMAL_ATTRS(11),
5401 THERMAL_ATTRS(12),
5402 THERMAL_ATTRS(13),
5403 THERMAL_ATTRS(14),
5404 THERMAL_ATTRS(15),
5405 THERMAL_ATTRS(0),
5406 THERMAL_ATTRS(1),
5407 THERMAL_ATTRS(2),
5408 THERMAL_ATTRS(3),
5409 THERMAL_ATTRS(4),
5410 THERMAL_ATTRS(5),
5411 THERMAL_ATTRS(6),
5412 THERMAL_ATTRS(7),
5413 NULL
5414};
5415
5416static const struct attribute_group thermal_temp_input16_group = {
5417 .attrs = thermal_temp_input_attr
5418};
5419
5420static const struct attribute_group thermal_temp_input8_group = {
5421 .attrs = &thermal_temp_input_attr[8]
5422};
5423
5424#undef THERMAL_SENSOR_ATTR_TEMP
5425#undef THERMAL_ATTRS
5426
5427/* --------------------------------------------------------------------- */
5428
a5763f22 5429static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5430{
60eb0b35
HMH		 5431 u8 t, ta1, ta2;
5432 int i;
5fba344c 5433 int acpi_tmp7;
2c37aa4e 5434 int res;
5fba344c 5435
fe08bc4b
HMH		 5436 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5437
5fba344c 5438 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5439
3d6f99ca 5440 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5441 /*
5442 * Direct EC access mode: sensors at registers
5443 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5444 * non-implemented, thermal sensors return 0x80 when
5445 * not available
5446 */
78f81cc4 5447
60eb0b35
HMH		 5448 ta1 = ta2 = 0;
5449 for (i = 0; i < 8; i++) {
04cc862c 5450 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5451 ta1 |= t;
5452 } else {
5453 ta1 = 0;
5454 break;
5455 }
04cc862c 5456 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5457 ta2 |= t;
5458 } else {
5459 ta1 = 0;
5460 break;
5461 }
5462 }
5463 if (ta1 == 0) {
5464 /* This is sheer paranoia, but we handle it anyway */
5465 if (acpi_tmp7) {
e0c7dfe7 5466 printk(TPACPI_ERR
60eb0b35 5467 "ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5468 "falling back to ACPI TMPx access "
5469 "mode\n");
efa27145 5470 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5471 } else {
e0c7dfe7 5472 printk(TPACPI_ERR
60eb0b35
HMH		 5473 "ThinkPad ACPI EC access misbehaving, "
5474 "disabling thermal sensors access\n");
efa27145 5475 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5476 }
5477 } else {
5478 thermal_read_mode =
5479 (ta2 != 0) ?
efa27145 5480 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5481 }
5482 } else if (acpi_tmp7) {
a26f878a
HMH		 5483 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
5484 /* 600e/x, 770e, 770x */
efa27145 5485 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 5486 } else {
5487 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 5488 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5489 }
5490 } else {
5491 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5492 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5493 }
78f81cc4 5494
fe08bc4b
HMH		 5495 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5496 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5497 thermal_read_mode);
5498
35ff8b9f 5499 switch (thermal_read_mode) {
2c37aa4e 5500 case TPACPI_THERMAL_TPEC_16:
7fd40029 5501 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5502 &thermal_temp_input16_group);
5503 if (res)
5504 return res;
5505 break;
5506 case TPACPI_THERMAL_TPEC_8:
5507 case TPACPI_THERMAL_ACPI_TMP07:
5508 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5509 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5510 &thermal_temp_input8_group);
5511 if (res)
5512 return res;
5513 break;
5514 case TPACPI_THERMAL_NONE:
5515 default:
5516 return 1;
5517 }
5518
5519 return 0;
5520}
5521
5522static void thermal_exit(void)
5523{
35ff8b9f 5524 switch (thermal_read_mode) {
2c37aa4e 5525 case TPACPI_THERMAL_TPEC_16:
7fd40029 5526 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5527 &thermal_temp_input16_group);
5528 break;
5529 case TPACPI_THERMAL_TPEC_8:
5530 case TPACPI_THERMAL_ACPI_TMP07:
5531 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5532 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5533 &thermal_temp_input16_group);
5534 break;
5535 case TPACPI_THERMAL_NONE:
5536 default:
5537 break;
5538 }
78f81cc4
BD		 5539}
5540
a26f878a
HMH		 5541static int thermal_read(char *p)
5542{
5543 int len = 0;
5544 int n, i;
5545 struct ibm_thermal_sensors_struct t;
5546
5547 n = thermal_get_sensors(&t);
5548 if (unlikely(n < 0))
5549 return n;
5550
5551 len += sprintf(p + len, "temperatures:\t");
5552
5553 if (n > 0) {
5554 for (i = 0; i < (n - 1); i++)
5555 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
5556 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
5557 } else
5558 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 5559
5560 return len;
5561}
5562
a5763f22
HMH		 5563static struct ibm_struct thermal_driver_data = {
5564 .name = "thermal",
5565 .read = thermal_read,
2c37aa4e 5566 .exit = thermal_exit,
a5763f22
HMH		 5567};
5568
56b6aeb0
HMH		 5569/*************************************************************************
5570 * EC Dump subdriver
5571 */
5572
78f81cc4
BD		 5573static u8 ecdump_regs[256];
5574
5575static int ecdump_read(char *p)
5576{
5577 int len = 0;
5578 int i, j;
5579 u8 v;
5580
5581 len += sprintf(p + len, "EC "
5582 " +00 +01 +02 +03 +04 +05 +06 +07"
5583 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5584 for (i = 0; i < 256; i += 16) {
5585 len += sprintf(p + len, "EC 0x%02x:", i);
5586 for (j = 0; j < 16; j++) {
5587 if (!acpi_ec_read(i + j, &v))
5588 break;
5589 if (v != ecdump_regs[i + j])
5590 len += sprintf(p + len, " *%02x", v);
5591 else
5592 len += sprintf(p + len, " %02x", v);
5593 ecdump_regs[i + j] = v;
5594 }
5595 len += sprintf(p + len, "\n");
5596 if (j != 16)
5597 break;
5598 }
5599
5600 /* These are way too dangerous to advertise openly... */
5601#if 0
5602 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
5603 " (<offset> is 00-ff, <value> is 00-ff)\n");
5604 len += sprintf(p + len, "commands:\t0x<offset> <value> "
5605 " (<offset> is 00-ff, <value> is 0-255)\n");
5606#endif
5607 return len;
5608}
5609
5610static int ecdump_write(char *buf)
5611{
5612 char *cmd;
5613 int i, v;
5614
5615 while ((cmd = next_cmd(&buf))) {
5616 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5617 /* i and v set */
5618 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5619 /* i and v set */
5620 } else
5621 return -EINVAL;
5622 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5623 if (!acpi_ec_write(i, v))
1da177e4
LT		 5624 return -EIO;
5625 } else
5626 return -EINVAL;
5627 }
5628
5629 return 0;
78f81cc4
BD		 5630}
5631
a5763f22
HMH		 5632static struct ibm_struct ecdump_driver_data = {
5633 .name = "ecdump",
5634 .read = ecdump_read,
5635 .write = ecdump_write,
92641177 5636 .flags.experimental = 1,
a5763f22
HMH		 5637};
5638
56b6aeb0
HMH		 5639/*************************************************************************
5640 * Backlight/brightness subdriver
5641 */
5642
f74a27d4
HMH		 5643#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5644
0e501834
HMH		 5645/*
5646 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5647 * CMOS NVRAM byte 0x5E, bits 0-3.
5648 *
5649 * EC HBRV (0x31) has the following layout
5650 * Bit 7: unknown function
5651 * Bit 6: unknown function
5652 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5653 * Bit 4: must be set to zero to avoid problems
5654 * Bit 3-0: backlight brightness level
5655 *
5656 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 5657 *
5658 * WARNING: The X61 has been verified to use HBRV for something else, so
5659 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5660 * testing on the very early *60 Lenovo models...
0e501834
HMH		 5661 */
5662
e11aecf1
HMH		 5663enum {
5664 TP_EC_BACKLIGHT = 0x31,
5665
5666 /* TP_EC_BACKLIGHT bitmasks */
5667 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5668 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5669 TP_EC_BACKLIGHT_MAPSW = 0x20,
5670};
5671
0e501834
HMH		 5672enum tpacpi_brightness_access_mode {
5673 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
5674 TPACPI_BRGHT_MODE_EC, /* EC control */
5675 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
5676 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
5677 TPACPI_BRGHT_MODE_MAX
5678};
5679
94954cc6 5680static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 5681
5682static enum tpacpi_brightness_access_mode brightness_mode =
5683 TPACPI_BRGHT_MODE_MAX;
5684
f74a27d4
HMH		 5685static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5686
b21a15f6 5687static struct mutex brightness_mutex;
56b6aeb0 5688
0e501834
HMH		 5689/* NVRAM brightness access,
5690 * call with brightness_mutex held! */
5691static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 5692{
0e501834 5693 u8 lnvram;
b21a15f6 5694
0e501834
HMH		 5695 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5696 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5697 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
5698 lnvram &= (tp_features.bright_16levels) ? 0x0f : 0x07;
5699
5700 return lnvram;
5701}
5702
5703static void tpacpi_brightness_checkpoint_nvram(void)
5704{
5705 u8 lec = 0;
5706 u8 b_nvram;
5707
5708 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
5709 return;
5710
5711 vdbg_printk(TPACPI_DBG_BRGHT,
5712 "trying to checkpoint backlight level to NVRAM...\n");
5713
5714 if (mutex_lock_killable(&brightness_mutex) < 0)
5715 return;
5716
5717 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5718 goto unlock;
5719 lec &= TP_EC_BACKLIGHT_LVLMSK;
5720 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
5721
5722 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5723 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
5724 /* NVRAM needs update */
5725 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
5726 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
5727 b_nvram |= lec;
5728 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
5729 dbg_printk(TPACPI_DBG_BRGHT,
5730 "updated NVRAM backlight level to %u (0x%02x)\n",
5731 (unsigned int) lec, (unsigned int) b_nvram);
5732 } else
5733 vdbg_printk(TPACPI_DBG_BRGHT,
5734 "NVRAM backlight level already is %u (0x%02x)\n",
5735 (unsigned int) lec, (unsigned int) b_nvram);
5736
5737unlock:
5738 mutex_unlock(&brightness_mutex);
5739}
5740
5741
5742/* call with brightness_mutex held! */
5743static int tpacpi_brightness_get_raw(int *status)
5744{
5745 u8 lec = 0;
5746
5747 switch (brightness_mode) {
5748 case TPACPI_BRGHT_MODE_UCMS_STEP:
5749 *status = tpacpi_brightness_nvram_get();
5750 return 0;
5751 case TPACPI_BRGHT_MODE_EC:
5752 case TPACPI_BRGHT_MODE_ECNVRAM:
5753 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 5754 return -EIO;
0e501834
HMH		 5755 *status = lec;
5756 return 0;
5757 default:
5758 return -ENXIO;
b21a15f6 5759 }
0e501834
HMH		 5760}
5761
5762/* call with brightness_mutex held! */
5763/* do NOT call with illegal backlight level value */
5764static int tpacpi_brightness_set_ec(unsigned int value)
5765{
5766 u8 lec = 0;
5767
5768 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5769 return -EIO;
5770
5771 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
5772 (lec & TP_EC_BACKLIGHT_CMDMSK) |
5773 (value & TP_EC_BACKLIGHT_LVLMSK))))
5774 return -EIO;
5775
5776 return 0;
5777}
5778
5779/* call with brightness_mutex held! */
5780static int tpacpi_brightness_set_ucmsstep(unsigned int value)
5781{
5782 int cmos_cmd, inc;
5783 unsigned int current_value, i;
5784
5785 current_value = tpacpi_brightness_nvram_get();
5786
5787 if (value == current_value)
5788 return 0;
5789
5790 cmos_cmd = (value > current_value) ?
5791 TP_CMOS_BRIGHTNESS_UP :
5792 TP_CMOS_BRIGHTNESS_DOWN;
5793 inc = (value > current_value) ? 1 : -1;
5794
5795 for (i = current_value; i != value; i += inc)
5796 if (issue_thinkpad_cmos_command(cmos_cmd))
5797 return -EIO;
b21a15f6 5798
e11aecf1 5799 return 0;
b21a15f6
HMH		 5800}
5801
5802/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 5803static int brightness_set(unsigned int value)
b21a15f6 5804{
0e501834 5805 int res;
b21a15f6 5806
e11aecf1
HMH		 5807 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
5808 value < 0)
b21a15f6
HMH		 5809 return -EINVAL;
5810
0e501834
HMH		 5811 vdbg_printk(TPACPI_DBG_BRGHT,
5812 "set backlight level to %d\n", value);
5813
7646ea88 5814 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 5815 if (res < 0)
5816 return res;
5817
0e501834
HMH		 5818 switch (brightness_mode) {
5819 case TPACPI_BRGHT_MODE_EC:
5820 case TPACPI_BRGHT_MODE_ECNVRAM:
5821 res = tpacpi_brightness_set_ec(value);
5822 break;
5823 case TPACPI_BRGHT_MODE_UCMS_STEP:
5824 res = tpacpi_brightness_set_ucmsstep(value);
5825 break;
5826 default:
5827 res = -ENXIO;
b21a15f6
HMH		 5828 }
5829
b21a15f6
HMH		 5830 mutex_unlock(&brightness_mutex);
5831 return res;
5832}
5833
5834/* sysfs backlight class ----------------------------------------------- */
5835
5836static int brightness_update_status(struct backlight_device *bd)
5837{
0e501834 5838 unsigned int level =
b21a15f6
HMH		 5839 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
5840 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 5841 bd->props.brightness : 0;
5842
5843 dbg_printk(TPACPI_DBG_BRGHT,
5844 "backlight: attempt to set level to %d\n",
5845 level);
5846
5847 /* it is the backlight class's job (caller) to handle
5848 * EINTR and other errors properly */
5849 return brightness_set(level);
b21a15f6
HMH		 5850}
5851
e11aecf1 5852static int brightness_get(struct backlight_device *bd)
a3f104c0 5853{
e11aecf1 5854 int status, res;
a3f104c0 5855
0e501834 5856 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 5857 if (res < 0)
0e501834
HMH		 5858 return 0;
5859
5860 res = tpacpi_brightness_get_raw(&status);
5861
5862 mutex_unlock(&brightness_mutex);
5863
5864 if (res < 0)
5865 return 0;
e11e211a 5866
e11aecf1 5867 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 5868}
5869
b21a15f6 5870static struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 5871 .get_brightness = brightness_get,
5872 .update_status = brightness_update_status,
56b6aeb0 5873};
e11e211a 5874
b21a15f6 5875/* --------------------------------------------------------------------- */
e11e211a 5876
59fe4fe3
HMH		 5877/*
5878 * These are only useful for models that have only one possibility
5879 * of GPU. If the BIOS model handles both ATI and Intel, don't use
5880 * these quirks.
5881 */
5882#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
5883#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
5884#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
5885
5886static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
5887 /* Models with ATI GPUs known to require ECNVRAM mode */
5888 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
5889
6da25bf5
HMH		 5890 /* Models with ATI GPUs that can use ECNVRAM */
5891 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 5892 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
5893 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
5894 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
5895
6da25bf5
HMH		 5896 /* Models with Intel Extreme Graphics 2 */
5897 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC),
59fe4fe3
HMH		 5898 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_NOEC),
5899 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_NOEC),
59fe4fe3
HMH		 5900
5901 /* Models with Intel GMA900 */
5902 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
5903 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
5904 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
5905};
5906
a5763f22 5907static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 5908{
5909 int b;
59fe4fe3 5910 unsigned long quirks;
56b6aeb0 5911
fe08bc4b
HMH		 5912 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
5913
f432255e
HMH		 5914 mutex_init(&brightness_mutex);
5915
59fe4fe3
HMH		 5916 quirks = tpacpi_check_quirks(brightness_quirk_table,
5917 ARRAY_SIZE(brightness_quirk_table));
5918
b5972796
HMH		 5919 /*
5920 * We always attempt to detect acpi support, so as to switch
5921 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5922 * going to publish a backlight interface
5923 */
5924 b = tpacpi_check_std_acpi_brightness_support();
5925 if (b > 0) {
2dba1b5d
TR		 5926
5927 if (acpi_video_backlight_support()) {
5928 if (brightness_enable > 1) {
5929 printk(TPACPI_NOTICE
5930 "Standard ACPI backlight interface "
5931 "available, not loading native one.\n");
5932 return 1;
5933 } else if (brightness_enable == 1) {
5934 printk(TPACPI_NOTICE
5935 "Backlight control force enabled, even if standard "
5936 "ACPI backlight interface is available\n");
5937 }
5938 } else {
5939 if (brightness_enable > 1) {
5940 printk(TPACPI_NOTICE
5941 "Standard ACPI backlight interface not "
5942 "available, thinkpad_acpi native "
5943 "brightness control enabled\n");
5944 }
e11e211a 5945 }
87cc537a
HMH		 5946 }
5947
b5972796 5948 if (!brightness_enable) {
0e501834 5949 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
b5972796
HMH		 5950 "brightness support disabled by "
5951 "module parameter\n");
5952 return 1;
5953 }
5954
5955 if (b > 16) {
5956 printk(TPACPI_ERR
5957 "Unsupported brightness interface, "
5958 "please contact %s\n", TPACPI_MAIL);
5959 return 1;
5960 }
5961 if (b == 16)
5962 tp_features.bright_16levels = 1;
5963
0e501834
HMH		 5964 /*
5965 * Check for module parameter bogosity, note that we
5966 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
5967 * able to detect "unspecified"
5968 */
5969 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
5970 return -EINVAL;
24d3b774 5971
0e501834
HMH		 5972 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
5973 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
5974 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 5975 if (quirks & TPACPI_BRGHT_Q_EC)
5976 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
5977 else
0e501834 5978 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 5979
0e501834 5980 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 5981 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 5982 brightness_mode);
5983 }
24d3b774 5984
d7880f10
HMH		 5985 /* Safety */
5986 if (thinkpad_id.vendor != PCI_VENDOR_ID_IBM &&
5987 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
5988 brightness_mode == TPACPI_BRGHT_MODE_EC))
5989 return -EINVAL;
5990
0e501834 5991 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 5992 return 1;
56b6aeb0 5993
a3f104c0 5994 if (tp_features.bright_16levels)
35ff8b9f
HMH		 5995 printk(TPACPI_INFO
5996 "detected a 16-level brightness capable ThinkPad\n");
a3f104c0 5997
7d5a015e
HMH		 5998 ibm_backlight_device = backlight_device_register(
5999 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
6000 &ibm_backlight_data);
56b6aeb0 6001 if (IS_ERR(ibm_backlight_device)) {
e0c7dfe7 6002 printk(TPACPI_ERR "Could not register backlight device\n");
56b6aeb0
HMH		 6003 return PTR_ERR(ibm_backlight_device);
6004 }
0e501834
HMH		 6005 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6006 "brightness is supported\n");
56b6aeb0 6007
59fe4fe3
HMH		 6008 if (quirks & TPACPI_BRGHT_Q_ASK) {
6009 printk(TPACPI_NOTICE
6010 "brightness: will use unverified default: "
6011 "brightness_mode=%d\n", brightness_mode);
6012 printk(TPACPI_NOTICE
6013 "brightness: please report to %s whether it works well "
6014 "or not on your ThinkPad\n", TPACPI_MAIL);
6015 }
6016
a3f104c0
HMH		 6017 ibm_backlight_device->props.max_brightness =
6018 (tp_features.bright_16levels)? 15 : 7;
e11aecf1 6019 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
56b6aeb0
HMH		 6020 backlight_update_status(ibm_backlight_device);
6021
6022 return 0;
6023}
6024
0e501834
HMH		 6025static void brightness_suspend(pm_message_t state)
6026{
6027 tpacpi_brightness_checkpoint_nvram();
6028}
6029
6030static void brightness_shutdown(void)
6031{
6032 tpacpi_brightness_checkpoint_nvram();
6033}
6034
56b6aeb0
HMH		 6035static void brightness_exit(void)
6036{
6037 if (ibm_backlight_device) {
0e501834 6038 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 6039 "calling backlight_device_unregister()\n");
56b6aeb0 6040 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 6041 }
0e501834
HMH		 6042
6043 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 6044}
6045
56b6aeb0
HMH		 6046static int brightness_read(char *p)
6047{
6048 int len = 0;
6049 int level;
6050
35ff8b9f
HMH		 6051 level = brightness_get(NULL);
6052 if (level < 0) {
56b6aeb0
HMH		 6053 len += sprintf(p + len, "level:\t\tunreadable\n");
6054 } else {
a3f104c0 6055 len += sprintf(p + len, "level:\t\t%d\n", level);
56b6aeb0
HMH		 6056 len += sprintf(p + len, "commands:\tup, down\n");
6057 len += sprintf(p + len, "commands:\tlevel <level>"
a3f104c0
HMH		 6058 " (<level> is 0-%d)\n",
6059 (tp_features.bright_16levels) ? 15 : 7);
56b6aeb0
HMH		 6060 }
6061
6062 return len;
6063}
6064
8acb0250
HM		 6065static int brightness_write(char *buf)
6066{
6067 int level;
4273af8d 6068 int rc;
1da177e4 6069 char *cmd;
a3f104c0 6070 int max_level = (tp_features.bright_16levels) ? 15 : 7;
1da177e4 6071
4273af8d
HMH		 6072 level = brightness_get(NULL);
6073 if (level < 0)
6074 return level;
78f81cc4 6075
4273af8d 6076 while ((cmd = next_cmd(&buf))) {
78f81cc4 6077 if (strlencmp(cmd, "up") == 0) {
4273af8d
HMH		 6078 if (level < max_level)
6079 level++;
78f81cc4 6080 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 6081 if (level > 0)
6082 level--;
6083 } else if (sscanf(cmd, "level %d", &level) == 1 &&
6084 level >= 0 && level <= max_level) {
6085 /* new level set */
78f81cc4
BD		 6086 } else
6087 return -EINVAL;
78f81cc4
BD		 6088 }
6089
0e501834
HMH		 6090 tpacpi_disclose_usertask("procfs brightness",
6091 "set level to %d\n", level);
6092
4273af8d
HMH		 6093 /*
6094 * Now we know what the final level should be, so we try to set it.
6095 * Doing it this way makes the syscall restartable in case of EINTR
6096 */
6097 rc = brightness_set(level);
6098 return (rc == -EINTR)? ERESTARTSYS : rc;
78f81cc4
BD		 6099}
6100
a5763f22
HMH		 6101static struct ibm_struct brightness_driver_data = {
6102 .name = "brightness",
6103 .read = brightness_read,
6104 .write = brightness_write,
6105 .exit = brightness_exit,
0e501834
HMH		 6106 .suspend = brightness_suspend,
6107 .shutdown = brightness_shutdown,
a5763f22
HMH		 6108};
6109
56b6aeb0
HMH		 6110/*************************************************************************
6111 * Volume subdriver
6112 */
fb87a811 6113
f74a27d4
HMH		 6114static int volume_offset = 0x30;
6115
78f81cc4
BD		 6116static int volume_read(char *p)
6117{
6118 int len = 0;
6119 u8 level;
6120
6121 if (!acpi_ec_read(volume_offset, &level)) {
6122 len += sprintf(p + len, "level:\t\tunreadable\n");
6123 } else {
6124 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
6125 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
6126 len += sprintf(p + len, "commands:\tup, down, mute\n");
6127 len += sprintf(p + len, "commands:\tlevel <level>"
6128 " (<level> is 0-15)\n");
6129 }
6130
6131 return len;
6132}
6133
78f81cc4
BD		 6134static int volume_write(char *buf)
6135{
6136 int cmos_cmd, inc, i;
6137 u8 level, mute;
6138 int new_level, new_mute;
6139 char *cmd;
6140
6141 while ((cmd = next_cmd(&buf))) {
6142 if (!acpi_ec_read(volume_offset, &level))
6143 return -EIO;
6144 new_mute = mute = level & 0x40;
6145 new_level = level = level & 0xf;
6146
6147 if (strlencmp(cmd, "up") == 0) {
6148 if (mute)
6149 new_mute = 0;
6150 else
6151 new_level = level == 15 ? 15 : level + 1;
6152 } else if (strlencmp(cmd, "down") == 0) {
6153 if (mute)
6154 new_mute = 0;
6155 else
6156 new_level = level == 0 ? 0 : level - 1;
6157 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
6158 new_level >= 0 && new_level <= 15) {
6159 /* new_level set */
6160 } else if (strlencmp(cmd, "mute") == 0) {
6161 new_mute = 0x40;
1da177e4
LT		 6162 } else
6163 return -EINVAL;
6164
35ff8b9f
HMH		 6165 if (new_level != level) {
6166 /* mute doesn't change */
6167
6168 cmos_cmd = (new_level > level) ?
6169 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 6170 inc = new_level > level ? 1 : -1;
6171
c9bea99c 6172 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 6173 !acpi_ec_write(volume_offset, level)))
6174 return -EIO;
6175
6176 for (i = level; i != new_level; i += inc)
c9bea99c 6177 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 6178 !acpi_ec_write(volume_offset, i + inc))
6179 return -EIO;
6180
35ff8b9f
HMH		 6181 if (mute &&
6182 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
6183 !acpi_ec_write(volume_offset, new_level + mute))) {
78f81cc4 6184 return -EIO;
35ff8b9f 6185 }
78f81cc4
BD		 6186 }
6187
35ff8b9f
HMH		 6188 if (new_mute != mute) {
6189 /* level doesn't change */
6190
6191 cmos_cmd = (new_mute) ?
6192 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 6193
c9bea99c 6194 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 6195 !acpi_ec_write(volume_offset, level + new_mute))
6196 return -EIO;
6197 }
6198 }
6199
6200 return 0;
6201}
6202
a5763f22
HMH		 6203static struct ibm_struct volume_driver_data = {
6204 .name = "volume",
6205 .read = volume_read,
6206 .write = volume_write,
6207};
56b6aeb0
HMH		 6208
6209/*************************************************************************
6210 * Fan subdriver
6211 */
6212
6213/*
6214 * FAN ACCESS MODES
6215 *
efa27145 6216 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 6217 * ACPI GFAN method: returns fan level
6218 *
efa27145 6219 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 6220 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 6221 *
efa27145 6222 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 6223 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
6224 *
f51d1a39
HMH		 6225 * EC 0x2f (HFSP) might be available *for reading*, but do not use
6226 * it for writing.
56b6aeb0 6227 *
efa27145 6228 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 6229 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
6230 * Supported on almost all ThinkPads
56b6aeb0
HMH		 6231 *
6232 * Fan speed changes of any sort (including those caused by the
6233 * disengaged mode) are usually done slowly by the firmware as the
6234 * maximum ammount of fan duty cycle change per second seems to be
6235 * limited.
6236 *
6237 * Reading is not available if GFAN exists.
6238 * Writing is not available if SFAN exists.
6239 *
6240 * Bits
6241 * 7 automatic mode engaged;
6242 * (default operation mode of the ThinkPad)
6243 * fan level is ignored in this mode.
f51d1a39 6244 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 6245 * not available on all thinkpads. May disable
f51d1a39
HMH		 6246 * the tachometer while the fan controller ramps up
6247 * the speed (which can take up to a few *minutes*).
6248 * Speeds up fan to 100% duty-cycle, which is far above
6249 * the standard RPM levels. It is not impossible that
6250 * it could cause hardware damage.
56b6aeb0
HMH		 6251 * 5-3 unused in some models. Extra bits for fan level
6252 * in others, but still useless as all values above
6253 * 7 map to the same speed as level 7 in these models.
6254 * 2-0 fan level (0..7 usually)
6255 * 0x00 = stop
6256 * 0x07 = max (set when temperatures critical)
6257 * Some ThinkPads may have other levels, see
efa27145 6258 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 6259 *
6260 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
6261 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
6262 * does so, its initial value is meaningless (0x07).
6263 *
6264 * For firmware bugs, refer to:
6265 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6266 *
6267 * ----
6268 *
6269 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
6270 * Main fan tachometer reading (in RPM)
6271 *
6272 * This register is present on all ThinkPads with a new-style EC, and
6273 * it is known not to be present on the A21m/e, and T22, as there is
6274 * something else in offset 0x84 according to the ACPI DSDT. Other
6275 * ThinkPads from this same time period (and earlier) probably lack the
6276 * tachometer as well.
6277 *
877d0310 6278 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 6279 * was never fixed by IBM to report the EC firmware version string
6280 * probably support the tachometer (like the early X models), so
6281 * detecting it is quite hard. We need more data to know for sure.
6282 *
6283 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
6284 * might result.
6285 *
f51d1a39
HMH		 6286 * FIRMWARE BUG: may go stale while the EC is switching to full speed
6287 * mode.
56b6aeb0
HMH		 6288 *
6289 * For firmware bugs, refer to:
6290 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6291 *
d7377247
HMH		 6292 * ----
6293 *
6294 * ThinkPad EC register 0x31 bit 0 (only on select models)
6295 *
6296 * When bit 0 of EC register 0x31 is zero, the tachometer registers
6297 * show the speed of the main fan. When bit 0 of EC register 0x31
6298 * is one, the tachometer registers show the speed of the auxiliary
6299 * fan.
6300 *
6301 * Fan control seems to affect both fans, regardless of the state
6302 * of this bit.
6303 *
6304 * So far, only the firmware for the X60/X61 non-tablet versions
6305 * seem to support this (firmware TP-7M).
6306 *
efa27145 6307 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 6308 * ThinkPad X31, X40, X41. Not available in the X60.
6309 *
6310 * FANS ACPI handle: takes three arguments: low speed, medium speed,
6311 * high speed. ACPI DSDT seems to map these three speeds to levels
6312 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
6313 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
6314 *
6315 * The speeds are stored on handles
6316 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
6317 *
6318 * There are three default speed sets, acessible as handles:
6319 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
6320 *
6321 * ACPI DSDT switches which set is in use depending on various
6322 * factors.
6323 *
efa27145 6324 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 6325 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
6326 * but the ACPI tables just mention level 7.
6327 */
6328
f74a27d4
HMH		 6329enum { /* Fan control constants */
6330 fan_status_offset = 0x2f, /* EC register 0x2f */
6331 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
6332 * 0x84 must be read before 0x85 */
d7377247
HMH		 6333 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
6334 bit 0 selects which fan is active */
f74a27d4
HMH		 6335
6336 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
6337 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
6338
6339 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
6340};
6341
6342enum fan_status_access_mode {
6343 TPACPI_FAN_NONE = 0, /* No fan status or control */
6344 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
6345 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
6346};
6347
6348enum fan_control_access_mode {
6349 TPACPI_FAN_WR_NONE = 0, /* No fan control */
6350 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
6351 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
6352 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
6353};
6354
6355enum fan_control_commands {
6356 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
6357 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
6358 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
6359 * and also watchdog cmd */
6360};
6361
6362static int fan_control_allowed;
6363
69ba91cb
HMH		 6364static enum fan_status_access_mode fan_status_access_mode;
6365static enum fan_control_access_mode fan_control_access_mode;
6366static enum fan_control_commands fan_control_commands;
78f81cc4 6367
778b4d74 6368static u8 fan_control_initial_status;
fe98a52c 6369static u8 fan_control_desired_level;
0081b162 6370static u8 fan_control_resume_level;
f74a27d4
HMH		 6371static int fan_watchdog_maxinterval;
6372
6373static struct mutex fan_mutex;
778b4d74 6374
25c68a33 6375static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 6376static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 6377
e0c7dfe7
HMH		 6378TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
6379TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 6380 "\\FSPD", /* 600e/x, 770e, 770x */
6381 ); /* all others */
e0c7dfe7 6382TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 6383 "JFNS", /* 770x-JL */
6384 ); /* all others */
6385
1c2ece75
HMH		 6386/*
6387 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
6388 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
6389 * be in auto mode (0x80).
6390 *
6391 * This is corrected by any write to HFSP either by the driver, or
6392 * by the firmware.
6393 *
6394 * We assume 0x07 really means auto mode while this quirk is active,
6395 * as this is far more likely than the ThinkPad being in level 7,
6396 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 6397 *
6398 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
6399 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 6400 */
6401
7d95a3d5 6402static void fan_quirk1_setup(void)
1c2ece75 6403{
1c2ece75 6404 if (fan_control_initial_status == 0x07) {
7d95a3d5
HMH		 6405 printk(TPACPI_NOTICE
6406 "fan_init: initial fan status is unknown, "
6407 "assuming it is in auto mode\n");
6408 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 6409 }
6410}
6411
6412static void fan_quirk1_handle(u8 *fan_status)
6413{
6414 if (unlikely(tp_features.fan_ctrl_status_undef)) {
6415 if (*fan_status != fan_control_initial_status) {
6416 /* something changed the HFSP regisnter since
6417 * driver init time, so it is not undefined
6418 * anymore */
6419 tp_features.fan_ctrl_status_undef = 0;
6420 } else {
6421 /* Return most likely status. In fact, it
6422 * might be the only possible status */
6423 *fan_status = TP_EC_FAN_AUTO;
6424 }
6425 }
6426}
6427
d7377247
HMH		 6428/* Select main fan on X60/X61, NOOP on others */
6429static bool fan_select_fan1(void)
6430{
6431 if (tp_features.second_fan) {
6432 u8 val;
6433
6434 if (ec_read(fan_select_offset, &val) < 0)
6435 return false;
6436 val &= 0xFEU;
6437 if (ec_write(fan_select_offset, val) < 0)
6438 return false;
6439 }
6440 return true;
6441}
6442
6443/* Select secondary fan on X60/X61 */
6444static bool fan_select_fan2(void)
6445{
6446 u8 val;
6447
6448 if (!tp_features.second_fan)
6449 return false;
6450
6451 if (ec_read(fan_select_offset, &val) < 0)
6452 return false;
6453 val |= 0x01U;
6454 if (ec_write(fan_select_offset, val) < 0)
6455 return false;
6456
6457 return true;
6458}
6459
fe98a52c 6460/*
b21a15f6 6461 * Call with fan_mutex held
fe98a52c 6462 */
b21a15f6 6463static void fan_update_desired_level(u8 status)
fe98a52c 6464{
b21a15f6
HMH		 6465 if ((status &
6466 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6467 if (status > 7)
6468 fan_control_desired_level = 7;
6469 else
6470 fan_control_desired_level = status;
6471 }
6472}
fe98a52c 6473
b21a15f6
HMH		 6474static int fan_get_status(u8 *status)
6475{
6476 u8 s;
fe98a52c 6477
b21a15f6
HMH		 6478 /* TODO:
6479 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 6480
b21a15f6
HMH		 6481 switch (fan_status_access_mode) {
6482 case TPACPI_FAN_RD_ACPI_GFAN:
6483 /* 570, 600e/x, 770e, 770x */
fe98a52c 6484
b21a15f6
HMH		 6485 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
6486 return -EIO;
fe98a52c 6487
b21a15f6
HMH		 6488 if (likely(status))
6489 *status = s & 0x07;
fe98a52c 6490
b21a15f6
HMH		 6491 break;
6492
6493 case TPACPI_FAN_RD_TPEC:
6494 /* all except 570, 600e/x, 770e, 770x */
6495 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
6496 return -EIO;
6497
1c2ece75 6498 if (likely(status)) {
b21a15f6 6499 *status = s;
1c2ece75
HMH		 6500 fan_quirk1_handle(status);
6501 }
fe98a52c 6502
fe98a52c 6503 break;
b21a15f6 6504
fe98a52c 6505 default:
b21a15f6 6506 return -ENXIO;
fe98a52c
HMH		 6507 }
6508
b21a15f6
HMH		 6509 return 0;
6510}
fe98a52c 6511
b21a15f6
HMH		 6512static int fan_get_status_safe(u8 *status)
6513{
6514 int rc;
6515 u8 s;
fe98a52c 6516
7646ea88 6517 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 6518 return -ERESTARTSYS;
6519 rc = fan_get_status(&s);
6520 if (!rc)
6521 fan_update_desired_level(s);
6522 mutex_unlock(&fan_mutex);
fe98a52c 6523
b21a15f6
HMH		 6524 if (status)
6525 *status = s;
fe98a52c 6526
b21a15f6
HMH		 6527 return rc;
6528}
6529
6530static int fan_get_speed(unsigned int *speed)
fe98a52c 6531{
b21a15f6 6532 u8 hi, lo;
fe98a52c 6533
b21a15f6
HMH		 6534 switch (fan_status_access_mode) {
6535 case TPACPI_FAN_RD_TPEC:
6536 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 6537 if (unlikely(!fan_select_fan1()))
6538 return -EIO;
b21a15f6
HMH		 6539 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
6540 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
6541 return -EIO;
fe98a52c 6542
b21a15f6
HMH		 6543 if (likely(speed))
6544 *speed = (hi << 8) | lo;
fe98a52c 6545
b21a15f6 6546 break;
fe98a52c 6547
b21a15f6
HMH		 6548 default:
6549 return -ENXIO;
6550 }
fe98a52c 6551
b21a15f6 6552 return 0;
fe98a52c
HMH		 6553}
6554
d7377247
HMH		 6555static int fan2_get_speed(unsigned int *speed)
6556{
6557 u8 hi, lo;
6558 bool rc;
6559
6560 switch (fan_status_access_mode) {
6561 case TPACPI_FAN_RD_TPEC:
6562 /* all except 570, 600e/x, 770e, 770x */
6563 if (unlikely(!fan_select_fan2()))
6564 return -EIO;
6565 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
6566 !acpi_ec_read(fan_rpm_offset + 1, &hi);
6567 fan_select_fan1(); /* play it safe */
6568 if (rc)
6569 return -EIO;
6570
6571 if (likely(speed))
6572 *speed = (hi << 8) | lo;
6573
6574 break;
6575
6576 default:
6577 return -ENXIO;
6578 }
6579
6580 return 0;
6581}
6582
b21a15f6 6583static int fan_set_level(int level)
fe98a52c 6584{
b21a15f6
HMH		 6585 if (!fan_control_allowed)
6586 return -EPERM;
fe98a52c 6587
b21a15f6
HMH		 6588 switch (fan_control_access_mode) {
6589 case TPACPI_FAN_WR_ACPI_SFAN:
6590 if (level >= 0 && level <= 7) {
6591 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
6592 return -EIO;
6593 } else
6594 return -EINVAL;
6595 break;
fe98a52c 6596
b21a15f6
HMH		 6597 case TPACPI_FAN_WR_ACPI_FANS:
6598 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 6599 if (!(level & TP_EC_FAN_AUTO) &&
6600 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 6601 ((level < 0) || (level > 7)))
6602 return -EINVAL;
fe98a52c 6603
b21a15f6
HMH		 6604 /* safety net should the EC not support AUTO
6605 * or FULLSPEED mode bits and just ignore them */
6606 if (level & TP_EC_FAN_FULLSPEED)
6607 level |= 7; /* safety min speed 7 */
547266e4 6608 else if (level & TP_EC_FAN_AUTO)
b21a15f6 6609 level |= 4; /* safety min speed 4 */
fe98a52c 6610
b21a15f6
HMH		 6611 if (!acpi_ec_write(fan_status_offset, level))
6612 return -EIO;
6613 else
6614 tp_features.fan_ctrl_status_undef = 0;
6615 break;
fe98a52c 6616
b21a15f6
HMH		 6617 default:
6618 return -ENXIO;
6619 }
74a60c0f
HMH		 6620
6621 vdbg_printk(TPACPI_DBG_FAN,
6622 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 6623 return 0;
fe98a52c
HMH		 6624}
6625
b21a15f6 6626static int fan_set_level_safe(int level)
fe98a52c 6627{
b21a15f6 6628 int rc;
fe98a52c 6629
b21a15f6
HMH		 6630 if (!fan_control_allowed)
6631 return -EPERM;
fe98a52c 6632
7646ea88 6633 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6634 return -ERESTARTSYS;
fe98a52c 6635
b21a15f6
HMH		 6636 if (level == TPACPI_FAN_LAST_LEVEL)
6637 level = fan_control_desired_level;
fe98a52c 6638
b21a15f6
HMH		 6639 rc = fan_set_level(level);
6640 if (!rc)
6641 fan_update_desired_level(level);
6642
6643 mutex_unlock(&fan_mutex);
6644 return rc;
fe98a52c
HMH		 6645}
6646
b21a15f6 6647static int fan_set_enable(void)
fe98a52c 6648{
b21a15f6
HMH		 6649 u8 s;
6650 int rc;
fe98a52c 6651
ecf2a80a
HMH		 6652 if (!fan_control_allowed)
6653 return -EPERM;
6654
7646ea88 6655 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6656 return -ERESTARTSYS;
fe98a52c 6657
b21a15f6
HMH		 6658 switch (fan_control_access_mode) {
6659 case TPACPI_FAN_WR_ACPI_FANS:
6660 case TPACPI_FAN_WR_TPEC:
6661 rc = fan_get_status(&s);
6662 if (rc < 0)
6663 break;
fe98a52c 6664
b21a15f6
HMH		 6665 /* Don't go out of emergency fan mode */
6666 if (s != 7) {
6667 s &= 0x07;
6668 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
6669 }
fe98a52c 6670
b21a15f6
HMH		 6671 if (!acpi_ec_write(fan_status_offset, s))
6672 rc = -EIO;
6673 else {
6674 tp_features.fan_ctrl_status_undef = 0;
6675 rc = 0;
6676 }
6677 break;
fe98a52c 6678
b21a15f6
HMH		 6679 case TPACPI_FAN_WR_ACPI_SFAN:
6680 rc = fan_get_status(&s);
6681 if (rc < 0)
6682 break;
fe98a52c 6683
b21a15f6 6684 s &= 0x07;
fe98a52c 6685
b21a15f6
HMH		 6686 /* Set fan to at least level 4 */
6687 s |= 4;
fe08bc4b 6688
b21a15f6 6689 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 6690 rc = -EIO;
b21a15f6
HMH		 6691 else
6692 rc = 0;
6693 break;
78f81cc4 6694
b21a15f6
HMH		 6695 default:
6696 rc = -ENXIO;
6697 }
5fba344c 6698
b21a15f6 6699 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 6700
6701 if (!rc)
6702 vdbg_printk(TPACPI_DBG_FAN,
6703 "fan control: set fan control register to 0x%02x\n",
6704 s);
b21a15f6 6705 return rc;
69ba91cb 6706}
78f81cc4 6707
b21a15f6 6708static int fan_set_disable(void)
78f81cc4 6709{
b21a15f6 6710 int rc;
c52f0aa5 6711
b21a15f6
HMH		 6712 if (!fan_control_allowed)
6713 return -EPERM;
78f81cc4 6714
7646ea88 6715 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6716 return -ERESTARTSYS;
3ef8a609 6717
b21a15f6
HMH		 6718 rc = 0;
6719 switch (fan_control_access_mode) {
6720 case TPACPI_FAN_WR_ACPI_FANS:
6721 case TPACPI_FAN_WR_TPEC:
6722 if (!acpi_ec_write(fan_status_offset, 0x00))
6723 rc = -EIO;
6724 else {
6725 fan_control_desired_level = 0;
6726 tp_features.fan_ctrl_status_undef = 0;
6727 }
3ef8a609
HMH		 6728 break;
6729
b21a15f6
HMH		 6730 case TPACPI_FAN_WR_ACPI_SFAN:
6731 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
6732 rc = -EIO;
6733 else
6734 fan_control_desired_level = 0;
c52f0aa5
HMH		 6735 break;
6736
6737 default:
b21a15f6 6738 rc = -ENXIO;
78f81cc4
BD		 6739 }
6740
74a60c0f
HMH		 6741 if (!rc)
6742 vdbg_printk(TPACPI_DBG_FAN,
6743 "fan control: set fan control register to 0\n");
fe98a52c 6744
fe98a52c 6745 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 6746 return rc;
6747}
6748
b21a15f6 6749static int fan_set_speed(int speed)
c52f0aa5 6750{
b21a15f6 6751 int rc;
c52f0aa5 6752
b21a15f6
HMH		 6753 if (!fan_control_allowed)
6754 return -EPERM;
3ef8a609 6755
7646ea88 6756 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6757 return -ERESTARTSYS;
c52f0aa5 6758
b21a15f6
HMH		 6759 rc = 0;
6760 switch (fan_control_access_mode) {
6761 case TPACPI_FAN_WR_ACPI_FANS:
6762 if (speed >= 0 && speed <= 65535) {
6763 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
6764 speed, speed, speed))
6765 rc = -EIO;
6766 } else
6767 rc = -EINVAL;
c52f0aa5
HMH		 6768 break;
6769
6770 default:
b21a15f6 6771 rc = -ENXIO;
c52f0aa5
HMH		 6772 }
6773
b21a15f6
HMH		 6774 mutex_unlock(&fan_mutex);
6775 return rc;
16663a87
HMH		 6776}
6777
6778static void fan_watchdog_reset(void)
6779{
94954cc6 6780 static int fan_watchdog_active;
16663a87 6781
4985cd0a
HMH		 6782 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
6783 return;
6784
16663a87
HMH		 6785 if (fan_watchdog_active)
6786 cancel_delayed_work(&fan_watchdog_task);
6787
8fef502e
HMH		 6788 if (fan_watchdog_maxinterval > 0 &&
6789 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87 6790 fan_watchdog_active = 1;
e0e3c061 6791 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
16663a87
HMH		 6792 msecs_to_jiffies(fan_watchdog_maxinterval
6793 * 1000))) {
35ff8b9f 6794 printk(TPACPI_ERR
e0e3c061 6795 "failed to queue the fan watchdog, "
16663a87
HMH		 6796 "watchdog will not trigger\n");
6797 }
6798 } else
6799 fan_watchdog_active = 0;
6800}
6801
b21a15f6 6802static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 6803{
b21a15f6 6804 int rc;
18ad7996 6805
b21a15f6
HMH		 6806 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
6807 return;
a12095c2 6808
e0c7dfe7 6809 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
b21a15f6
HMH		 6810 rc = fan_set_enable();
6811 if (rc < 0) {
e0c7dfe7 6812 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
b21a15f6
HMH		 6813 "will try again later...\n", -rc);
6814 /* reschedule for later */
6815 fan_watchdog_reset();
6816 }
6817}
eaa7571b 6818
b21a15f6
HMH		 6819/*
6820 * SYSFS fan layout: hwmon compatible (device)
6821 *
6822 * pwm*_enable:
6823 * 0: "disengaged" mode
6824 * 1: manual mode
6825 * 2: native EC "auto" mode (recommended, hardware default)
6826 *
6827 * pwm*: set speed in manual mode, ignored otherwise.
6828 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6829 * interpolation.
6830 *
6831 * fan*_input: tachometer reading, RPM
6832 *
6833 *
6834 * SYSFS fan layout: extensions
6835 *
6836 * fan_watchdog (driver):
6837 * fan watchdog interval in seconds, 0 disables (default), max 120
6838 */
6839
6840/* sysfs fan pwm1_enable ----------------------------------------------- */
6841static ssize_t fan_pwm1_enable_show(struct device *dev,
6842 struct device_attribute *attr,
6843 char *buf)
6844{
6845 int res, mode;
6846 u8 status;
6847
6848 res = fan_get_status_safe(&status);
6849 if (res)
6850 return res;
6851
b21a15f6
HMH		 6852 if (status & TP_EC_FAN_FULLSPEED) {
6853 mode = 0;
6854 } else if (status & TP_EC_FAN_AUTO) {
6855 mode = 2;
6856 } else
6857 mode = 1;
6858
6859 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
6860}
a12095c2 6861
b21a15f6
HMH		 6862static ssize_t fan_pwm1_enable_store(struct device *dev,
6863 struct device_attribute *attr,
6864 const char *buf, size_t count)
6865{
6866 unsigned long t;
6867 int res, level;
6868
6869 if (parse_strtoul(buf, 2, &t))
6870 return -EINVAL;
6871
74a60c0f
HMH		 6872 tpacpi_disclose_usertask("hwmon pwm1_enable",
6873 "set fan mode to %lu\n", t);
6874
b21a15f6
HMH		 6875 switch (t) {
6876 case 0:
6877 level = TP_EC_FAN_FULLSPEED;
6878 break;
6879 case 1:
6880 level = TPACPI_FAN_LAST_LEVEL;
6881 break;
6882 case 2:
6883 level = TP_EC_FAN_AUTO;
6884 break;
6885 case 3:
6886 /* reserved for software-controlled auto mode */
6887 return -ENOSYS;
18ad7996 6888 default:
b21a15f6 6889 return -EINVAL;
18ad7996 6890 }
b21a15f6
HMH		 6891
6892 res = fan_set_level_safe(level);
6893 if (res == -ENXIO)
6894 return -EINVAL;
6895 else if (res < 0)
6896 return res;
6897
6898 fan_watchdog_reset();
6899
6900 return count;
18ad7996
HMH		 6901}
6902
b21a15f6
HMH		 6903static struct device_attribute dev_attr_fan_pwm1_enable =
6904 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
6905 fan_pwm1_enable_show, fan_pwm1_enable_store);
6906
6907/* sysfs fan pwm1 ------------------------------------------------------ */
6908static ssize_t fan_pwm1_show(struct device *dev,
6909 struct device_attribute *attr,
6910 char *buf)
fe98a52c 6911{
b21a15f6
HMH		 6912 int res;
6913 u8 status;
fe98a52c 6914
b21a15f6
HMH		 6915 res = fan_get_status_safe(&status);
6916 if (res)
6917 return res;
ecf2a80a 6918
b21a15f6
HMH		 6919 if ((status &
6920 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
6921 status = fan_control_desired_level;
fe98a52c 6922
b21a15f6
HMH		 6923 if (status > 7)
6924 status = 7;
fe98a52c 6925
b21a15f6 6926 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 6927}
6928
b21a15f6
HMH		 6929static ssize_t fan_pwm1_store(struct device *dev,
6930 struct device_attribute *attr,
6931 const char *buf, size_t count)
18ad7996 6932{
b21a15f6 6933 unsigned long s;
1c6a334e 6934 int rc;
b21a15f6 6935 u8 status, newlevel;
1c6a334e 6936
b21a15f6
HMH		 6937 if (parse_strtoul(buf, 255, &s))
6938 return -EINVAL;
6939
74a60c0f
HMH		 6940 tpacpi_disclose_usertask("hwmon pwm1",
6941 "set fan speed to %lu\n", s);
6942
b21a15f6
HMH		 6943 /* scale down from 0-255 to 0-7 */
6944 newlevel = (s >> 5) & 0x07;
ecf2a80a 6945
7646ea88 6946 if (mutex_lock_killable(&fan_mutex))
fc589a3c 6947 return -ERESTARTSYS;
40ca9fdf 6948
b21a15f6
HMH		 6949 rc = fan_get_status(&status);
6950 if (!rc && (status &
6951 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6952 rc = fan_set_level(newlevel);
6953 if (rc == -ENXIO)
6954 rc = -EINVAL;
6955 else if (!rc) {
6956 fan_update_desired_level(newlevel);
6957 fan_watchdog_reset();
eaa7571b 6958 }
b21a15f6 6959 }
1c6a334e 6960
b21a15f6
HMH		 6961 mutex_unlock(&fan_mutex);
6962 return (rc)? rc : count;
6963}
1c6a334e 6964
b21a15f6
HMH		 6965static struct device_attribute dev_attr_fan_pwm1 =
6966 __ATTR(pwm1, S_IWUSR | S_IRUGO,
6967 fan_pwm1_show, fan_pwm1_store);
1c6a334e 6968
b21a15f6
HMH		 6969/* sysfs fan fan1_input ------------------------------------------------ */
6970static ssize_t fan_fan1_input_show(struct device *dev,
6971 struct device_attribute *attr,
6972 char *buf)
6973{
6974 int res;
6975 unsigned int speed;
1c6a334e 6976
b21a15f6
HMH		 6977 res = fan_get_speed(&speed);
6978 if (res < 0)
6979 return res;
1c6a334e 6980
b21a15f6
HMH		 6981 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
6982}
18ad7996 6983
b21a15f6
HMH		 6984static struct device_attribute dev_attr_fan_fan1_input =
6985 __ATTR(fan1_input, S_IRUGO,
6986 fan_fan1_input_show, NULL);
40ca9fdf 6987
d7377247
HMH		 6988/* sysfs fan fan2_input ------------------------------------------------ */
6989static ssize_t fan_fan2_input_show(struct device *dev,
6990 struct device_attribute *attr,
6991 char *buf)
6992{
6993 int res;
6994 unsigned int speed;
6995
6996 res = fan2_get_speed(&speed);
6997 if (res < 0)
6998 return res;
6999
7000 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7001}
7002
7003static struct device_attribute dev_attr_fan_fan2_input =
7004 __ATTR(fan2_input, S_IRUGO,
7005 fan_fan2_input_show, NULL);
7006
b21a15f6
HMH		 7007/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7008static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
7009 char *buf)
7010{
7011 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 7012}
7013
b21a15f6
HMH		 7014static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
7015 const char *buf, size_t count)
18ad7996 7016{
b21a15f6
HMH		 7017 unsigned long t;
7018
7019 if (parse_strtoul(buf, 120, &t))
7020 return -EINVAL;
40ca9fdf 7021
ecf2a80a
HMH		 7022 if (!fan_control_allowed)
7023 return -EPERM;
7024
b21a15f6
HMH		 7025 fan_watchdog_maxinterval = t;
7026 fan_watchdog_reset();
40ca9fdf 7027
74a60c0f
HMH		 7028 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
7029
b21a15f6
HMH		 7030 return count;
7031}
7032
7033static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
7034 fan_fan_watchdog_show, fan_fan_watchdog_store);
7035
7036/* --------------------------------------------------------------------- */
7037static struct attribute *fan_attributes[] = {
7038 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
7039 &dev_attr_fan_fan1_input.attr,
d7377247 7040 NULL, /* for fan2_input */
b21a15f6
HMH		 7041 NULL
7042};
7043
7044static const struct attribute_group fan_attr_group = {
7045 .attrs = fan_attributes,
7046};
7047
d7377247
HMH		 7048#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7049#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 7050
7051#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7052 { .vendor = PCI_VENDOR_ID_IBM, \
7053 .bios = TPACPI_MATCH_ANY, \
7054 .ec = TPID(__id1, __id2), \
7055 .quirks = __quirks }
7056
d7377247
HMH		 7057#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
7058 { .vendor = PCI_VENDOR_ID_LENOVO, \
7059 .bios = TPACPI_MATCH_ANY, \
7060 .ec = TPID(__id1, __id2), \
7061 .quirks = __quirks }
7062
7d95a3d5
HMH		 7063static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
7064 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
7065 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
7066 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
7067 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 7068 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 7069};
7070
d7377247 7071#undef TPACPI_FAN_QL
7d95a3d5
HMH		 7072#undef TPACPI_FAN_QI
7073
b21a15f6
HMH		 7074static int __init fan_init(struct ibm_init_struct *iibm)
7075{
7076 int rc;
7d95a3d5 7077 unsigned long quirks;
b21a15f6 7078
74a60c0f
HMH		 7079 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7080 "initializing fan subdriver\n");
b21a15f6
HMH		 7081
7082 mutex_init(&fan_mutex);
7083 fan_status_access_mode = TPACPI_FAN_NONE;
7084 fan_control_access_mode = TPACPI_FAN_WR_NONE;
7085 fan_control_commands = 0;
7086 fan_watchdog_maxinterval = 0;
7087 tp_features.fan_ctrl_status_undef = 0;
d7377247 7088 tp_features.second_fan = 0;
b21a15f6
HMH		 7089 fan_control_desired_level = 7;
7090
e0c7dfe7
HMH		 7091 TPACPI_ACPIHANDLE_INIT(fans);
7092 TPACPI_ACPIHANDLE_INIT(gfan);
7093 TPACPI_ACPIHANDLE_INIT(sfan);
b21a15f6 7094
7d95a3d5
HMH		 7095 quirks = tpacpi_check_quirks(fan_quirk_table,
7096 ARRAY_SIZE(fan_quirk_table));
7097
b21a15f6
HMH		 7098 if (gfan_handle) {
7099 /* 570, 600e/x, 770e, 770x */
7100 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
7101 } else {
7102 /* all other ThinkPads: note that even old-style
7103 * ThinkPad ECs supports the fan control register */
7104 if (likely(acpi_ec_read(fan_status_offset,
7105 &fan_control_initial_status))) {
7106 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 7107 if (quirks & TPACPI_FAN_Q1)
7108 fan_quirk1_setup();
d7377247
HMH		 7109 if (quirks & TPACPI_FAN_2FAN) {
7110 tp_features.second_fan = 1;
7111 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7112 "secondary fan support enabled\n");
7113 }
b21a15f6 7114 } else {
e0c7dfe7 7115 printk(TPACPI_ERR
b21a15f6
HMH		 7116 "ThinkPad ACPI EC access misbehaving, "
7117 "fan status and control unavailable\n");
7118 return 1;
7119 }
7120 }
7121
7122 if (sfan_handle) {
7123 /* 570, 770x-JL */
7124 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
7125 fan_control_commands |=
7126 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
7127 } else {
7128 if (!gfan_handle) {
7129 /* gfan without sfan means no fan control */
7130 /* all other models implement TP EC 0x2f control */
7131
7132 if (fans_handle) {
7133 /* X31, X40, X41 */
7134 fan_control_access_mode =
7135 TPACPI_FAN_WR_ACPI_FANS;
7136 fan_control_commands |=
7137 TPACPI_FAN_CMD_SPEED |
7138 TPACPI_FAN_CMD_LEVEL |
7139 TPACPI_FAN_CMD_ENABLE;
7140 } else {
7141 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
7142 fan_control_commands |=
7143 TPACPI_FAN_CMD_LEVEL |
7144 TPACPI_FAN_CMD_ENABLE;
7145 }
fe98a52c 7146 }
b21a15f6 7147 }
18ad7996 7148
74a60c0f
HMH		 7149 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7150 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 7151 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
7152 fan_control_access_mode != TPACPI_FAN_WR_NONE),
7153 fan_status_access_mode, fan_control_access_mode);
1c6a334e 7154
b21a15f6
HMH		 7155 /* fan control master switch */
7156 if (!fan_control_allowed) {
7157 fan_control_access_mode = TPACPI_FAN_WR_NONE;
7158 fan_control_commands = 0;
74a60c0f 7159 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 7160 "fan control features disabled by parameter\n");
18ad7996 7161 }
40ca9fdf 7162
b21a15f6
HMH		 7163 /* update fan_control_desired_level */
7164 if (fan_status_access_mode != TPACPI_FAN_NONE)
7165 fan_get_status_safe(NULL);
fe98a52c 7166
b21a15f6
HMH		 7167 if (fan_status_access_mode != TPACPI_FAN_NONE ||
7168 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 7169 if (tp_features.second_fan) {
7170 /* attach second fan tachometer */
7171 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
7172 &dev_attr_fan_fan2_input.attr;
7173 }
b21a15f6
HMH		 7174 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
7175 &fan_attr_group);
b21a15f6
HMH		 7176 if (rc < 0)
7177 return rc;
9c0a76e1
HMH		 7178
7179 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
7180 &driver_attr_fan_watchdog);
7181 if (rc < 0) {
7182 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
7183 &fan_attr_group);
7184 return rc;
7185 }
b21a15f6
HMH		 7186 return 0;
7187 } else
7188 return 1;
56b6aeb0
HMH		 7189}
7190
b21a15f6 7191static void fan_exit(void)
56b6aeb0 7192{
74a60c0f 7193 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 7194 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 7195
b21a15f6
HMH		 7196 /* FIXME: can we really do this unconditionally? */
7197 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 7198 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
7199 &driver_attr_fan_watchdog);
40ca9fdf 7200
b21a15f6 7201 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 7202 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 7203}
7204
75700e53
HMH		 7205static void fan_suspend(pm_message_t state)
7206{
0081b162
HMH		 7207 int rc;
7208
75700e53
HMH		 7209 if (!fan_control_allowed)
7210 return;
7211
7212 /* Store fan status in cache */
0081b162
HMH		 7213 fan_control_resume_level = 0;
7214 rc = fan_get_status_safe(&fan_control_resume_level);
7215 if (rc < 0)
7216 printk(TPACPI_NOTICE
7217 "failed to read fan level for later "
7218 "restore during resume: %d\n", rc);
7219
7220 /* if it is undefined, don't attempt to restore it.
7221 * KEEP THIS LAST */
75700e53 7222 if (tp_features.fan_ctrl_status_undef)
0081b162 7223 fan_control_resume_level = 0;
75700e53
HMH		 7224}
7225
7226static void fan_resume(void)
7227{
75700e53
HMH		 7228 u8 current_level = 7;
7229 bool do_set = false;
0081b162 7230 int rc;
75700e53
HMH		 7231
7232 /* DSDT *always* updates status on resume */
7233 tp_features.fan_ctrl_status_undef = 0;
7234
75700e53 7235 if (!fan_control_allowed ||
0081b162 7236 !fan_control_resume_level ||
75700e53
HMH		 7237 (fan_get_status_safe(&current_level) < 0))
7238 return;
7239
7240 switch (fan_control_access_mode) {
7241 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 7242 /* never decrease fan level */
7243 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 7244 break;
7245 case TPACPI_FAN_WR_ACPI_FANS:
7246 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 7247 /* never decrease fan level, scale is:
7248 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
7249 *
7250 * We expect the firmware to set either 7 or AUTO, but we
7251 * handle FULLSPEED out of paranoia.
7252 *
7253 * So, we can safely only restore FULLSPEED or 7, anything
7254 * else could slow the fan. Restoring AUTO is useless, at
7255 * best that's exactly what the DSDT already set (it is the
7256 * slower it uses).
7257 *
7258 * Always keep in mind that the DSDT *will* have set the
7259 * fans to what the vendor supposes is the best level. We
7260 * muck with it only to speed the fan up.
7261 */
7262 if (fan_control_resume_level != 7 &&
7263 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
7264 return;
7265 else
7266 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
7267 (current_level != fan_control_resume_level);
75700e53
HMH		 7268 break;
7269 default:
7270 return;
7271 }
7272 if (do_set) {
7273 printk(TPACPI_NOTICE
7274 "restoring fan level to 0x%02x\n",
0081b162
HMH		 7275 fan_control_resume_level);
7276 rc = fan_set_level_safe(fan_control_resume_level);
7277 if (rc < 0)
7278 printk(TPACPI_NOTICE
7279 "failed to restore fan level: %d\n", rc);
75700e53
HMH		 7280 }
7281}
7282
56b6aeb0
HMH		 7283static int fan_read(char *p)
7284{
7285 int len = 0;
7286 int rc;
7287 u8 status;
7288 unsigned int speed = 0;
7289
7290 switch (fan_status_access_mode) {
efa27145 7291 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 7292 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 7293 rc = fan_get_status_safe(&status);
7294 if (rc < 0)
56b6aeb0
HMH		 7295 return rc;
7296
7297 len += sprintf(p + len, "status:\t\t%s\n"
7298 "level:\t\t%d\n",
7299 (status != 0) ? "enabled" : "disabled", status);
7300 break;
7301
efa27145 7302 case TPACPI_FAN_RD_TPEC:
56b6aeb0 7303 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 7304 rc = fan_get_status_safe(&status);
7305 if (rc < 0)
56b6aeb0
HMH		 7306 return rc;
7307
56b6aeb0
HMH		 7308 len += sprintf(p + len, "status:\t\t%s\n",
7309 (status != 0) ? "enabled" : "disabled");
7310
35ff8b9f
HMH		 7311 rc = fan_get_speed(&speed);
7312 if (rc < 0)
56b6aeb0
HMH		 7313 return rc;
7314
7315 len += sprintf(p + len, "speed:\t\t%d\n", speed);
7316
efa27145 7317 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 7318 /* Disengaged mode takes precedence */
7319 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 7320 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 7321 len += sprintf(p + len, "level:\t\tauto\n");
7322 else
7323 len += sprintf(p + len, "level:\t\t%d\n", status);
7324 break;
7325
efa27145 7326 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 7327 default:
7328 len += sprintf(p + len, "status:\t\tnot supported\n");
7329 }
7330
efa27145 7331 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 7332 len += sprintf(p + len, "commands:\tlevel <level>");
7333
7334 switch (fan_control_access_mode) {
efa27145 7335 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7336 len += sprintf(p + len, " (<level> is 0-7)\n");
7337 break;
7338
7339 default:
7340 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 7341 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 7342 break;
7343 }
7344 }
18ad7996 7345
efa27145 7346 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0 7347 len += sprintf(p + len, "commands:\tenable, disable\n"
35ff8b9f
HMH		 7348 "commands:\twatchdog <timeout> (<timeout> "
7349 "is 0 (off), 1-120 (seconds))\n");
1da177e4 7350
efa27145 7351 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 7352 len += sprintf(p + len, "commands:\tspeed <speed>"
7353 " (<speed> is 0-65535)\n");
7354
7355 return len;
78f81cc4
BD		 7356}
7357
18ad7996
HMH		 7358static int fan_write_cmd_level(const char *cmd, int *rc)
7359{
7360 int level;
7361
a12095c2 7362 if (strlencmp(cmd, "level auto") == 0)
efa27145 7363 level = TP_EC_FAN_AUTO;
fe98a52c 7364 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 7365 (strlencmp(cmd, "level full-speed") == 0))
efa27145 7366 level = TP_EC_FAN_FULLSPEED;
a12095c2 7367 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 7368 return 0;
7369
35ff8b9f
HMH		 7370 *rc = fan_set_level_safe(level);
7371 if (*rc == -ENXIO)
e0c7dfe7 7372 printk(TPACPI_ERR "level command accepted for unsupported "
18ad7996 7373 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7374 else if (!*rc)
7375 tpacpi_disclose_usertask("procfs fan",
7376 "set level to %d\n", level);
18ad7996
HMH		 7377
7378 return 1;
7379}
7380
7381static int fan_write_cmd_enable(const char *cmd, int *rc)
7382{
7383 if (strlencmp(cmd, "enable") != 0)
7384 return 0;
7385
35ff8b9f
HMH		 7386 *rc = fan_set_enable();
7387 if (*rc == -ENXIO)
e0c7dfe7 7388 printk(TPACPI_ERR "enable command accepted for unsupported "
18ad7996 7389 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7390 else if (!*rc)
7391 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 7392
7393 return 1;
7394}
7395
7396static int fan_write_cmd_disable(const char *cmd, int *rc)
7397{
7398 if (strlencmp(cmd, "disable") != 0)
7399 return 0;
7400
35ff8b9f
HMH		 7401 *rc = fan_set_disable();
7402 if (*rc == -ENXIO)
e0c7dfe7 7403 printk(TPACPI_ERR "disable command accepted for unsupported "
18ad7996 7404 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7405 else if (!*rc)
7406 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 7407
7408 return 1;
7409}
7410
7411static int fan_write_cmd_speed(const char *cmd, int *rc)
7412{
7413 int speed;
7414
a8b7a662
HMH		 7415 /* TODO:
7416 * Support speed <low> <medium> <high> ? */
7417
18ad7996
HMH		 7418 if (sscanf(cmd, "speed %d", &speed) != 1)
7419 return 0;
7420
35ff8b9f
HMH		 7421 *rc = fan_set_speed(speed);
7422 if (*rc == -ENXIO)
e0c7dfe7 7423 printk(TPACPI_ERR "speed command accepted for unsupported "
18ad7996 7424 "access mode %d", fan_control_access_mode);
74a60c0f
HMH		 7425 else if (!*rc)
7426 tpacpi_disclose_usertask("procfs fan",
7427 "set speed to %d\n", speed);
18ad7996
HMH		 7428
7429 return 1;
7430}
7431
16663a87
HMH		 7432static int fan_write_cmd_watchdog(const char *cmd, int *rc)
7433{
7434 int interval;
7435
7436 if (sscanf(cmd, "watchdog %d", &interval) != 1)
7437 return 0;
7438
7439 if (interval < 0 || interval > 120)
7440 *rc = -EINVAL;
74a60c0f 7441 else {
16663a87 7442 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 7443 tpacpi_disclose_usertask("procfs fan",
7444 "set watchdog timer to %d\n",
7445 interval);
7446 }
16663a87
HMH		 7447
7448 return 1;
7449}
7450
18ad7996
HMH		 7451static int fan_write(char *buf)
7452{
7453 char *cmd;
7454 int rc = 0;
7455
7456 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 7457 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 7458 fan_write_cmd_level(cmd, &rc)) &&
efa27145 7459 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 7460 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 7461 fan_write_cmd_disable(cmd, &rc) ||
7462 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 7463 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 7464 fan_write_cmd_speed(cmd, &rc))
7465 )
7466 rc = -EINVAL;
16663a87
HMH		 7467 else if (!rc)
7468 fan_watchdog_reset();
18ad7996
HMH		 7469 }
7470
7471 return rc;
7472}
7473
a5763f22
HMH		 7474static struct ibm_struct fan_driver_data = {
7475 .name = "fan",
7476 .read = fan_read,
7477 .write = fan_write,
7478 .exit = fan_exit,
75700e53
HMH		 7479 .suspend = fan_suspend,
7480 .resume = fan_resume,
a5763f22
HMH		 7481};
7482
56b6aeb0
HMH		 7483/****************************************************************************
7484 ****************************************************************************
7485 *
7486 * Infrastructure
7487 *
7488 ****************************************************************************
7489 ****************************************************************************/
7490
7fd40029
HMH		 7491/* sysfs name ---------------------------------------------------------- */
7492static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
7493 struct device_attribute *attr,
7494 char *buf)
7495{
e0c7dfe7 7496 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 7497}
7498
7499static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
7500 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
7501
7502/* --------------------------------------------------------------------- */
7503
56b6aeb0 7504/* /proc support */
94954cc6 7505static struct proc_dir_entry *proc_dir;
16663a87 7506
56b6aeb0
HMH		 7507/*
7508 * Module and infrastructure proble, init and exit handling
7509 */
1da177e4 7510
b21a15f6
HMH		 7511static int force_load;
7512
fe08bc4b 7513#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 7514static const char * __init str_supported(int is_supported)
fe08bc4b 7515{
a5763f22 7516 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 7517
a5763f22 7518 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 7519}
7520#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
7521
b21a15f6
HMH		 7522static void ibm_exit(struct ibm_struct *ibm)
7523{
7524 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
7525
7526 list_del_init(&ibm->all_drivers);
7527
7528 if (ibm->flags.acpi_notify_installed) {
7529 dbg_printk(TPACPI_DBG_EXIT,
7530 "%s: acpi_remove_notify_handler\n", ibm->name);
7531 BUG_ON(!ibm->acpi);
7532 acpi_remove_notify_handler(*ibm->acpi->handle,
7533 ibm->acpi->type,
7534 dispatch_acpi_notify);
7535 ibm->flags.acpi_notify_installed = 0;
7536 ibm->flags.acpi_notify_installed = 0;
7537 }
7538
7539 if (ibm->flags.proc_created) {
7540 dbg_printk(TPACPI_DBG_EXIT,
7541 "%s: remove_proc_entry\n", ibm->name);
7542 remove_proc_entry(ibm->name, proc_dir);
7543 ibm->flags.proc_created = 0;
7544 }
7545
7546 if (ibm->flags.acpi_driver_registered) {
7547 dbg_printk(TPACPI_DBG_EXIT,
7548 "%s: acpi_bus_unregister_driver\n", ibm->name);
7549 BUG_ON(!ibm->acpi);
7550 acpi_bus_unregister_driver(ibm->acpi->driver);
7551 kfree(ibm->acpi->driver);
7552 ibm->acpi->driver = NULL;
7553 ibm->flags.acpi_driver_registered = 0;
7554 }
7555
7556 if (ibm->flags.init_called && ibm->exit) {
7557 ibm->exit();
7558 ibm->flags.init_called = 0;
7559 }
7560
7561 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
7562}
f74a27d4 7563
a5763f22 7564static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 7565{
7566 int ret;
a5763f22 7567 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 7568 struct proc_dir_entry *entry;
7569
a5763f22
HMH		 7570 BUG_ON(ibm == NULL);
7571
7572 INIT_LIST_HEAD(&ibm->all_drivers);
7573
92641177 7574 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 7575 return 0;
7576
fe08bc4b
HMH		 7577 dbg_printk(TPACPI_DBG_INIT,
7578 "probing for %s\n", ibm->name);
7579
a5763f22
HMH		 7580 if (iibm->init) {
7581 ret = iibm->init(iibm);
5fba344c
HMH		 7582 if (ret > 0)
7583 return 0; /* probe failed */
7584 if (ret)
1da177e4 7585 return ret;
a5763f22 7586
92641177 7587 ibm->flags.init_called = 1;
1da177e4
LT		 7588 }
7589
8d376cd6
HMH		 7590 if (ibm->acpi) {
7591 if (ibm->acpi->hid) {
7592 ret = register_tpacpi_subdriver(ibm);
7593 if (ret)
7594 goto err_out;
7595 }
5fba344c 7596
8d376cd6
HMH		 7597 if (ibm->acpi->notify) {
7598 ret = setup_acpi_notify(ibm);
7599 if (ret == -ENODEV) {
e0c7dfe7 7600 printk(TPACPI_NOTICE "disabling subdriver %s\n",
8d376cd6
HMH		 7601 ibm->name);
7602 ret = 0;
7603 goto err_out;
7604 }
7605 if (ret < 0)
7606 goto err_out;
5fba344c 7607 }
5fba344c
HMH		 7608 }
7609
fe08bc4b
HMH		 7610 dbg_printk(TPACPI_DBG_INIT,
7611 "%s installed\n", ibm->name);
7612
78f81cc4
BD		 7613 if (ibm->read) {
7614 entry = create_proc_entry(ibm->name,
7615 S_IFREG | S_IRUGO | S_IWUSR,
7616 proc_dir);
7617 if (!entry) {
e0c7dfe7 7618 printk(TPACPI_ERR "unable to create proc entry %s\n",
78f81cc4 7619 ibm->name);
5fba344c
HMH		 7620 ret = -ENODEV;
7621 goto err_out;
78f81cc4 7622 }
78f81cc4 7623 entry->data = ibm;
8d376cd6 7624 entry->read_proc = &dispatch_procfs_read;
78f81cc4 7625 if (ibm->write)
8d376cd6 7626 entry->write_proc = &dispatch_procfs_write;
92641177 7627 ibm->flags.proc_created = 1;
78f81cc4 7628 }
1da177e4 7629
a5763f22
HMH		 7630 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
7631
1da177e4 7632 return 0;
5fba344c
HMH		 7633
7634err_out:
fe08bc4b
HMH		 7635 dbg_printk(TPACPI_DBG_INIT,
7636 "%s: at error exit path with result %d\n",
7637 ibm->name, ret);
7638
5fba344c
HMH		 7639 ibm_exit(ibm);
7640 return (ret < 0)? ret : 0;
1da177e4
LT		 7641}
7642
56b6aeb0
HMH		 7643/* Probing */
7644
050df107
HMH		 7645static bool __pure __init tpacpi_is_fw_digit(const char c)
7646{
7647 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
7648}
7649
7650/* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
7651static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
7652 const char t)
7653{
7654 return s && strlen(s) >= 8 &&
7655 tpacpi_is_fw_digit(s[0]) &&
7656 tpacpi_is_fw_digit(s[1]) &&
7657 s[2] == t && s[3] == 'T' &&
7658 tpacpi_is_fw_digit(s[4]) &&
7659 tpacpi_is_fw_digit(s[5]) &&
7660 s[6] == 'W' && s[7] == 'W';
7661}
7662
bf20e740
HMH		 7663/* returns 0 - probe ok, or < 0 - probe error.
7664 * Probe ok doesn't mean thinkpad found.
7665 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7666static int __must_check __init get_thinkpad_model_data(
7667 struct thinkpad_id_data *tp)
1da177e4 7668{
1855256c 7669 const struct dmi_device *dev = NULL;
56b6aeb0 7670 char ec_fw_string[18];
bf20e740 7671 char const *s;
1da177e4 7672
d5a2f2f1 7673 if (!tp)
bf20e740 7674 return -EINVAL;
d5a2f2f1
HMH		 7675
7676 memset(tp, 0, sizeof(*tp));
7677
7678 if (dmi_name_in_vendors("IBM"))
7679 tp->vendor = PCI_VENDOR_ID_IBM;
7680 else if (dmi_name_in_vendors("LENOVO"))
7681 tp->vendor = PCI_VENDOR_ID_LENOVO;
7682 else
bf20e740 7683 return 0;
d5a2f2f1 7684
bf20e740
HMH		 7685 s = dmi_get_system_info(DMI_BIOS_VERSION);
7686 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
7687 if (s && !tp->bios_version_str)
7688 return -ENOMEM;
050df107
HMH		 7689
7690 /* Really ancient ThinkPad 240X will fail this, which is fine */
7691 if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E'))
bf20e740 7692 return 0;
050df107 7693
d5a2f2f1
HMH		 7694 tp->bios_model = tp->bios_version_str[0]
7695 | (tp->bios_version_str[1] << 8);
050df107
HMH		 7696 tp->bios_release = (tp->bios_version_str[4] << 8)
7697 | tp->bios_version_str[5];
d5a2f2f1 7698
56b6aeb0
HMH		 7699 /*
7700 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7701 * X32 or newer, all Z series; Some models must have an
7702 * up-to-date BIOS or they will not be detected.
7703 *
7704 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7705 */
7706 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
7707 if (sscanf(dev->name,
7708 "IBM ThinkPad Embedded Controller -[%17c",
7709 ec_fw_string) == 1) {
7710 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
7711 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 7712
7713 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 7714 if (!tp->ec_version_str)
7715 return -ENOMEM;
050df107
HMH		 7716
7717 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
7718 tp->ec_model = ec_fw_string[0]
7719 | (ec_fw_string[1] << 8);
7720 tp->ec_release = (ec_fw_string[4] << 8)
7721 | ec_fw_string[5];
7722 } else {
7723 printk(TPACPI_NOTICE
7724 "ThinkPad firmware release %s "
7725 "doesn't match the known patterns\n",
7726 ec_fw_string);
7727 printk(TPACPI_NOTICE
7728 "please report this to %s\n",
7729 TPACPI_MAIL);
7730 }
d5a2f2f1 7731 break;
78f81cc4 7732 }
1da177e4 7733 }
d5a2f2f1 7734
bf20e740
HMH		 7735 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
7736 if (s && !strnicmp(s, "ThinkPad", 8)) {
7737 tp->model_str = kstrdup(s, GFP_KERNEL);
7738 if (!tp->model_str)
7739 return -ENOMEM;
d5a2f2f1 7740 }
8c74adbc 7741
bf20e740
HMH		 7742 s = dmi_get_system_info(DMI_PRODUCT_NAME);
7743 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
7744 if (s && !tp->nummodel_str)
7745 return -ENOMEM;
7746
7747 return 0;
1da177e4
LT		 7748}
7749
5fba344c
HMH		 7750static int __init probe_for_thinkpad(void)
7751{
7752 int is_thinkpad;
7753
7754 if (acpi_disabled)
7755 return -ENODEV;
7756
7757 /*
7758 * Non-ancient models have better DMI tagging, but very old models
e675abaf 7759 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 7760 */
e675abaf
HMH		 7761 is_thinkpad = (thinkpad_id.model_str != NULL) ||
7762 (thinkpad_id.ec_model != 0) ||
7763 tpacpi_is_fw_known();
5fba344c
HMH		 7764
7765 /* ec is required because many other handles are relative to it */
e0c7dfe7 7766 TPACPI_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 7767 if (!ec_handle) {
7768 if (is_thinkpad)
e0c7dfe7 7769 printk(TPACPI_ERR
5fba344c
HMH		 7770 "Not yet supported ThinkPad detected!\n");
7771 return -ENODEV;
7772 }
7773
0dcef77c
HMH		 7774 if (!is_thinkpad && !force_load)
7775 return -ENODEV;
7776
5fba344c
HMH		 7777 return 0;
7778}
7779
7780
56b6aeb0 7781/* Module init, exit, parameters */
1da177e4 7782
a5763f22
HMH		 7783static struct ibm_init_struct ibms_init[] __initdata = {
7784 {
7785 .init = thinkpad_acpi_driver_init,
7786 .data = &thinkpad_acpi_driver_data,
7787 },
7788 {
7789 .init = hotkey_init,
7790 .data = &hotkey_driver_data,
7791 },
7792 {
7793 .init = bluetooth_init,
7794 .data = &bluetooth_driver_data,
7795 },
7796 {
7797 .init = wan_init,
7798 .data = &wan_driver_data,
7799 },
0045c0aa
HMH		 7800 {
7801 .init = uwb_init,
7802 .data = &uwb_driver_data,
7803 },
d7c1d17d 7804#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 7805 {
7806 .init = video_init,
7807 .data = &video_driver_data,
7808 },
d7c1d17d 7809#endif
a5763f22
HMH		 7810 {
7811 .init = light_init,
7812 .data = &light_driver_data,
7813 },
a5763f22
HMH		 7814 {
7815 .init = cmos_init,
7816 .data = &cmos_driver_data,
7817 },
7818 {
7819 .init = led_init,
7820 .data = &led_driver_data,
7821 },
7822 {
7823 .init = beep_init,
7824 .data = &beep_driver_data,
7825 },
7826 {
7827 .init = thermal_init,
7828 .data = &thermal_driver_data,
7829 },
7830 {
7831 .data = &ecdump_driver_data,
7832 },
7833 {
7834 .init = brightness_init,
7835 .data = &brightness_driver_data,
7836 },
7837 {
7838 .data = &volume_driver_data,
7839 },
7840 {
7841 .init = fan_init,
7842 .data = &fan_driver_data,
7843 },
7844};
7845
3945ac36 7846static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 7847{
7848 unsigned int i;
a5763f22 7849 struct ibm_struct *ibm;
1da177e4 7850
59f91ff1
HMH		 7851 if (!kp || !kp->name || !val)
7852 return -EINVAL;
7853
a5763f22
HMH		 7854 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7855 ibm = ibms_init[i].data;
59f91ff1
HMH		 7856 WARN_ON(ibm == NULL);
7857
7858 if (!ibm || !ibm->name)
7859 continue;
a5763f22
HMH		 7860
7861 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
7862 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 7863 return -ENOSPC;
a5763f22
HMH		 7864 strcpy(ibms_init[i].param, val);
7865 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 7866 return 0;
7867 }
a5763f22 7868 }
1da177e4 7869
1da177e4
LT		 7870 return -EINVAL;
7871}
7872
56b6aeb0 7873module_param(experimental, int, 0);
f68080f8 7874MODULE_PARM_DESC(experimental,
35ff8b9f 7875 "Enables experimental features when non-zero");
56b6aeb0 7876
132ce091 7877module_param_named(debug, dbg_level, uint, 0);
f68080f8 7878MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 7879
86cc9445 7880module_param(force_load, bool, 0);
f68080f8 7881MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 7882 "Attempts to load the driver even on a "
7883 "mis-identified ThinkPad when true");
0dcef77c 7884
86cc9445 7885module_param_named(fan_control, fan_control_allowed, bool, 0);
f68080f8 7886MODULE_PARM_DESC(fan_control,
35ff8b9f 7887 "Enables setting fan parameters features when true");
ecf2a80a 7888
0e501834 7889module_param_named(brightness_mode, brightness_mode, uint, 0);
f68080f8 7890MODULE_PARM_DESC(brightness_mode,
35ff8b9f 7891 "Selects brightness control strategy: "
0e501834 7892 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 7893
87cc537a 7894module_param(brightness_enable, uint, 0);
f68080f8 7895MODULE_PARM_DESC(brightness_enable,
35ff8b9f 7896 "Enables backlight control when 1, disables when 0");
87cc537a 7897
ff80f137 7898module_param(hotkey_report_mode, uint, 0);
f68080f8 7899MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 7900 "used for backwards compatibility with userspace, "
7901 "see documentation");
ff80f137 7902
e0c7dfe7 7903#define TPACPI_PARAM(feature) \
f68080f8 7904 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 7905 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 7906 "at module load, see documentation")
1da177e4 7907
e0c7dfe7
HMH		 7908TPACPI_PARAM(hotkey);
7909TPACPI_PARAM(bluetooth);
7910TPACPI_PARAM(video);
7911TPACPI_PARAM(light);
e0c7dfe7
HMH		 7912TPACPI_PARAM(cmos);
7913TPACPI_PARAM(led);
7914TPACPI_PARAM(beep);
7915TPACPI_PARAM(ecdump);
7916TPACPI_PARAM(brightness);
7917TPACPI_PARAM(volume);
7918TPACPI_PARAM(fan);
78f81cc4 7919
a73f3091
HMH		 7920#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7921module_param(dbg_wlswemul, uint, 0);
7922MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
7923module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
7924MODULE_PARM_DESC(wlsw_state,
7925 "Initial state of the emulated WLSW switch");
7926
7927module_param(dbg_bluetoothemul, uint, 0);
7928MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
7929module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
7930MODULE_PARM_DESC(bluetooth_state,
7931 "Initial state of the emulated bluetooth switch");
7932
7933module_param(dbg_wwanemul, uint, 0);
7934MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
7935module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
7936MODULE_PARM_DESC(wwan_state,
7937 "Initial state of the emulated WWAN switch");
0045c0aa
HMH		 7938
7939module_param(dbg_uwbemul, uint, 0);
7940MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
7941module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
7942MODULE_PARM_DESC(uwb_state,
7943 "Initial state of the emulated UWB switch");
a73f3091
HMH		 7944#endif
7945
b21a15f6
HMH		 7946static void thinkpad_acpi_module_exit(void)
7947{
7948 struct ibm_struct *ibm, *itmp;
7949
7950 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
7951
7952 list_for_each_entry_safe_reverse(ibm, itmp,
7953 &tpacpi_all_drivers,
7954 all_drivers) {
7955 ibm_exit(ibm);
7956 }
7957
7958 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
7959
7960 if (tpacpi_inputdev) {
7961 if (tp_features.input_device_registered)
7962 input_unregister_device(tpacpi_inputdev);
7963 else
7964 input_free_device(tpacpi_inputdev);
7965 }
7966
7967 if (tpacpi_hwmon)
7968 hwmon_device_unregister(tpacpi_hwmon);
7969
7970 if (tp_features.sensors_pdev_attrs_registered)
7971 device_remove_file(&tpacpi_sensors_pdev->dev,
7972 &dev_attr_thinkpad_acpi_pdev_name);
7973 if (tpacpi_sensors_pdev)
7974 platform_device_unregister(tpacpi_sensors_pdev);
7975 if (tpacpi_pdev)
7976 platform_device_unregister(tpacpi_pdev);
7977
7978 if (tp_features.sensors_pdrv_attrs_registered)
7979 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
7980 if (tp_features.platform_drv_attrs_registered)
7981 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
7982
7983 if (tp_features.sensors_pdrv_registered)
7984 platform_driver_unregister(&tpacpi_hwmon_pdriver);
7985
7986 if (tp_features.platform_drv_registered)
7987 platform_driver_unregister(&tpacpi_pdriver);
7988
7989 if (proc_dir)
e0c7dfe7 7990 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 7991
e0e3c061
HMH		 7992 if (tpacpi_wq)
7993 destroy_workqueue(tpacpi_wq);
7994
b21a15f6
HMH		 7995 kfree(thinkpad_id.bios_version_str);
7996 kfree(thinkpad_id.ec_version_str);
7997 kfree(thinkpad_id.model_str);
7998}
7999
f74a27d4 8000
1def7115 8001static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 8002{
8003 int ret, i;
8004
8fef502e
HMH		 8005 tpacpi_lifecycle = TPACPI_LIFE_INIT;
8006
ff80f137
HMH		 8007 /* Parameter checking */
8008 if (hotkey_report_mode > 2)
8009 return -EINVAL;
8010
54ae1501 8011 /* Driver-level probe */
d5a2f2f1 8012
bf20e740
HMH		 8013 ret = get_thinkpad_model_data(&thinkpad_id);
8014 if (ret) {
8015 printk(TPACPI_ERR
8016 "unable to get DMI data: %d\n", ret);
8017 thinkpad_acpi_module_exit();
8018 return ret;
8019 }
5fba344c 8020 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 8021 if (ret) {
8022 thinkpad_acpi_module_exit();
5fba344c 8023 return ret;
d5a2f2f1 8024 }
1da177e4 8025
54ae1501 8026 /* Driver initialization */
d5a2f2f1 8027
e0c7dfe7
HMH		 8028 TPACPI_ACPIHANDLE_INIT(ecrd);
8029 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 8030
e0e3c061
HMH		 8031 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
8032 if (!tpacpi_wq) {
8033 thinkpad_acpi_module_exit();
8034 return -ENOMEM;
8035 }
8036
e0c7dfe7 8037 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 8038 if (!proc_dir) {
35ff8b9f
HMH		 8039 printk(TPACPI_ERR
8040 "unable to create proc dir " TPACPI_PROC_DIR);
1def7115 8041 thinkpad_acpi_module_exit();
1da177e4
LT		 8042 return -ENODEV;
8043 }
78f81cc4 8044
54ae1501
HMH		 8045 ret = platform_driver_register(&tpacpi_pdriver);
8046 if (ret) {
35ff8b9f
HMH		 8047 printk(TPACPI_ERR
8048 "unable to register main platform driver\n");
54ae1501
HMH		 8049 thinkpad_acpi_module_exit();
8050 return ret;
8051 }
ac36393d
HMH		 8052 tp_features.platform_drv_registered = 1;
8053
7fd40029
HMH		 8054 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
8055 if (ret) {
35ff8b9f
HMH		 8056 printk(TPACPI_ERR
8057 "unable to register hwmon platform driver\n");
7fd40029
HMH		 8058 thinkpad_acpi_module_exit();
8059 return ret;
8060 }
8061 tp_features.sensors_pdrv_registered = 1;
8062
176750d6 8063 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 8064 if (!ret) {
8065 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 8066 ret = tpacpi_create_driver_attributes(
8067 &tpacpi_hwmon_pdriver.driver);
2369cc94 8068 }
176750d6 8069 if (ret) {
35ff8b9f
HMH		 8070 printk(TPACPI_ERR
8071 "unable to create sysfs driver attributes\n");
176750d6
HMH		 8072 thinkpad_acpi_module_exit();
8073 return ret;
8074 }
2369cc94 8075 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 8076
54ae1501
HMH		 8077
8078 /* Device initialization */
e0c7dfe7 8079 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 8080 NULL, 0);
8081 if (IS_ERR(tpacpi_pdev)) {
8082 ret = PTR_ERR(tpacpi_pdev);
8083 tpacpi_pdev = NULL;
e0c7dfe7 8084 printk(TPACPI_ERR "unable to register platform device\n");
54ae1501
HMH		 8085 thinkpad_acpi_module_exit();
8086 return ret;
8087 }
7fd40029 8088 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 8089 TPACPI_HWMON_DRVR_NAME,
8090 -1, NULL, 0);
7fd40029
HMH		 8091 if (IS_ERR(tpacpi_sensors_pdev)) {
8092 ret = PTR_ERR(tpacpi_sensors_pdev);
8093 tpacpi_sensors_pdev = NULL;
35ff8b9f
HMH		 8094 printk(TPACPI_ERR
8095 "unable to register hwmon platform device\n");
7fd40029
HMH		 8096 thinkpad_acpi_module_exit();
8097 return ret;
8098 }
8099 ret = device_create_file(&tpacpi_sensors_pdev->dev,
8100 &dev_attr_thinkpad_acpi_pdev_name);
8101 if (ret) {
e0c7dfe7 8102 printk(TPACPI_ERR
35ff8b9f 8103 "unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 8104 thinkpad_acpi_module_exit();
8105 return ret;
8106 }
8107 tp_features.sensors_pdev_attrs_registered = 1;
8108 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 8109 if (IS_ERR(tpacpi_hwmon)) {
8110 ret = PTR_ERR(tpacpi_hwmon);
8111 tpacpi_hwmon = NULL;
e0c7dfe7 8112 printk(TPACPI_ERR "unable to register hwmon device\n");
54ae1501
HMH		 8113 thinkpad_acpi_module_exit();
8114 return ret;
8115 }
8523ed6f 8116 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 8117 tpacpi_inputdev = input_allocate_device();
8118 if (!tpacpi_inputdev) {
e0c7dfe7 8119 printk(TPACPI_ERR "unable to allocate input device\n");
7f5d1cd6
HMH		 8120 thinkpad_acpi_module_exit();
8121 return -ENOMEM;
8122 } else {
8123 /* Prepare input device, but don't register */
8124 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 8125 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 8126 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 8127 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
8128 thinkpad_id.vendor :
8129 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 8130 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
8131 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
8132 }
a5763f22
HMH		 8133 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
8134 ret = ibm_init(&ibms_init[i]);
8135 if (ret >= 0 && *ibms_init[i].param)
8136 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 8137 if (ret < 0) {
1def7115 8138 thinkpad_acpi_module_exit();
1da177e4
LT		 8139 return ret;
8140 }
8141 }
7f5d1cd6
HMH		 8142 ret = input_register_device(tpacpi_inputdev);
8143 if (ret < 0) {
e0c7dfe7 8144 printk(TPACPI_ERR "unable to register input device\n");
7f5d1cd6
HMH		 8145 thinkpad_acpi_module_exit();
8146 return ret;
8147 } else {
8148 tp_features.input_device_registered = 1;
8149 }
1da177e4 8150
8fef502e 8151 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 8152 return 0;
8153}
8154
95e57ab2
HMH		 8155MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
8156
922fe097
HMH		 8157/*
8158 * This will autoload the driver in almost every ThinkPad
8159 * in widespread use.
8160 *
8161 * Only _VERY_ old models, like the 240, 240x and 570 lack
8162 * the HKEY event interface.
8163 */
8164MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
8165
f68080f8
HMH		 8166/*
8167 * DMI matching for module autoloading
8168 *
8169 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8170 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
8171 *
8172 * Only models listed in thinkwiki will be supported, so add yours
8173 * if it is not there yet.
8174 */
8175#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 8176 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 8177
f68080f8
HMH		 8178/* Ancient thinkpad BIOSes have to be identified by
8179 * BIOS type or model number, and there are far less
8180 * BIOS types than model numbers... */
922fe097 8181IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 8182
f68f53a2
HMH		 8183MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
8184MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 8185MODULE_DESCRIPTION(TPACPI_DESC);
8186MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 8187MODULE_LICENSE("GPL");
8188
1def7115
HMH		 8189module_init(thinkpad_acpi_module_init);
8190module_exit(thinkpad_acpi_module_exit);
Linux 6.x block layer and io_uring tree(s)