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thinkpad-acpi: remove HKEY disable functionality
[deliverable/linux.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
aa2fbcec 24#define TPACPI_VERSION "0.22"
2586d566 25#define TPACPI_SYSFS_VERSION 0x020300
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
0e74dc26
HMH		 169/* rfkill switches */
170enum {
171 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
172 TPACPI_RFK_WWAN_SW_ID,
0045c0aa 173 TPACPI_RFK_UWB_SW_ID,
0e74dc26
HMH		 174};
175
7ff8d62f 176/* printk headers */
e0c7dfe7 177#define TPACPI_LOG TPACPI_FILE ": "
7ff8d62f
HMH		 178#define TPACPI_EMERG KERN_EMERG TPACPI_LOG
179#define TPACPI_ALERT KERN_ALERT TPACPI_LOG
180#define TPACPI_CRIT KERN_CRIT TPACPI_LOG
181#define TPACPI_ERR KERN_ERR TPACPI_LOG
182#define TPACPI_WARN KERN_WARNING TPACPI_LOG
183#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
184#define TPACPI_INFO KERN_INFO TPACPI_LOG
185#define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
186
187/* Debugging printk groups */
0c78039f 188#define TPACPI_DBG_ALL 0xffff
73a94d86 189#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 190#define TPACPI_DBG_INIT 0x0001
191#define TPACPI_DBG_EXIT 0x0002
0c78039f 192
35ff8b9f
HMH		 193#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
194#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
195#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 196
0c78039f
HMH		 197
198/****************************************************************************
b21a15f6 199 * Driver-wide structs and misc. variables
0c78039f
HMH		 200 */
201
202struct ibm_struct;
203
204struct tp_acpi_drv_struct {
205 const struct acpi_device_id *hid;
206 struct acpi_driver *driver;
207
208 void (*notify) (struct ibm_struct *, u32);
209 acpi_handle *handle;
210 u32 type;
211 struct acpi_device *device;
212};
213
214struct ibm_struct {
215 char *name;
216
217 int (*read) (char *);
218 int (*write) (char *);
219 void (*exit) (void);
220 void (*resume) (void);
083f1760 221 void (*suspend) (pm_message_t state);
90d9d3c7 222 void (*shutdown) (void);
0c78039f
HMH		 223
224 struct list_head all_drivers;
225
226 struct tp_acpi_drv_struct *acpi;
227
228 struct {
229 u8 acpi_driver_registered:1;
230 u8 acpi_notify_installed:1;
231 u8 proc_created:1;
232 u8 init_called:1;
233 u8 experimental:1;
234 } flags;
235};
236
237struct ibm_init_struct {
238 char param[32];
239
240 int (*init) (struct ibm_init_struct *);
241 struct ibm_struct *data;
242};
243
244static struct {
245#ifdef CONFIG_THINKPAD_ACPI_BAY
246 u32 bay_status:1;
247 u32 bay_eject:1;
248 u32 bay_status2:1;
249 u32 bay_eject2:1;
250#endif
251 u32 bluetooth:1;
252 u32 hotkey:1;
253 u32 hotkey_mask:1;
254 u32 hotkey_wlsw:1;
6c231bd5 255 u32 hotkey_tablet:1;
0c78039f
HMH		 256 u32 light:1;
257 u32 light_status:1;
258 u32 bright_16levels:1;
b5972796 259 u32 bright_acpimode:1;
0c78039f 260 u32 wan:1;
0045c0aa 261 u32 uwb:1;
0c78039f
HMH		 262 u32 fan_ctrl_status_undef:1;
263 u32 input_device_registered:1;
264 u32 platform_drv_registered:1;
265 u32 platform_drv_attrs_registered:1;
266 u32 sensors_pdrv_registered:1;
267 u32 sensors_pdrv_attrs_registered:1;
268 u32 sensors_pdev_attrs_registered:1;
269 u32 hotkey_poll_active:1;
270} tp_features;
271
92889022
HMH		 272static struct {
273 u16 hotkey_mask_ff:1;
2d5e94d7 274 u16 bright_cmos_ec_unsync:1;
92889022
HMH		 275} tp_warned;
276
0c78039f
HMH		 277struct thinkpad_id_data {
278 unsigned int vendor; /* ThinkPad vendor:
279 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
280
281 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
282 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
283
284 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
285 u16 ec_model;
286
8c74adbc
HMH		 287 char *model_str; /* ThinkPad T43 */
288 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 289};
0c78039f
HMH		 290static struct thinkpad_id_data thinkpad_id;
291
8fef502e
HMH		 292static enum {
293 TPACPI_LIFE_INIT = 0,
294 TPACPI_LIFE_RUNNING,
295 TPACPI_LIFE_EXITING,
296} tpacpi_lifecycle;
297
b21a15f6
HMH		 298static int experimental;
299static u32 dbg_level;
300
e0e3c061
HMH		 301static struct workqueue_struct *tpacpi_wq;
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;
307 enum led_brightness new_brightness;
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
56b6aeb0
HMH		 356/****************************************************************************
357 ****************************************************************************
358 *
359 * ACPI Helpers and device model
360 *
361 ****************************************************************************
362 ****************************************************************************/
363
364/*************************************************************************
365 * ACPI basic handles
366 */
1da177e4 367
94954cc6 368static acpi_handle root_handle;
1da177e4 369
e0c7dfe7 370#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4
LT		 371 static acpi_handle object##_handle; \
372 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 373 static char *object##_path; \
1da177e4
LT		 374 static char *object##_paths[] = { paths }
375
e0c7dfe7 376TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
78f81cc4
BD		 377 "\\_SB.PCI.ISA.EC", /* 570 */
378 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
379 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
380 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
381 "\\_SB.PCI0.ICH3.EC0", /* R31 */
382 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 383 );
78f81cc4 384
e0c7dfe7
HMH		 385TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
386TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 387
35ff8b9f
HMH		 388TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
389 /* T4x, X31, X40 */
78f81cc4
BD		 390 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
391 "\\CMS", /* R40, R40e */
56b6aeb0 392 ); /* all others */
78f81cc4 393
e0c7dfe7 394TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 395 "^HKEY", /* R30, R31 */
396 "HKEY", /* all others */
56b6aeb0 397 ); /* 570 */
78f81cc4 398
d7c1d17d
HMH		 399TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
400 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
401 "\\_SB.PCI0.VID0", /* 770e */
402 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
403 "\\_SB.PCI0.AGP.VID", /* all others */
404 ); /* R30, R31 */
405
78f81cc4 406
56b6aeb0
HMH		 407/*************************************************************************
408 * ACPI helpers
a8b7a662
HMH		 409 */
410
1da177e4
LT		 411static int acpi_evalf(acpi_handle handle,
412 void *res, char *method, char *fmt, ...)
413{
414 char *fmt0 = fmt;
78f81cc4 415 struct acpi_object_list params;
e0c7dfe7 416 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 417 struct acpi_buffer result, *resultp;
418 union acpi_object out_obj;
419 acpi_status status;
420 va_list ap;
421 char res_type;
422 int success;
423 int quiet;
1da177e4
LT		 424
425 if (!*fmt) {
e0c7dfe7 426 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
1da177e4
LT		 427 return 0;
428 }
429
430 if (*fmt == 'q') {
431 quiet = 1;
432 fmt++;
433 } else
434 quiet = 0;
435
436 res_type = *(fmt++);
437
438 params.count = 0;
439 params.pointer = &in_objs[0];
440
441 va_start(ap, fmt);
442 while (*fmt) {
443 char c = *(fmt++);
444 switch (c) {
445 case 'd': /* int */
446 in_objs[params.count].integer.value = va_arg(ap, int);
447 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
448 break;
78f81cc4 449 /* add more types as needed */
1da177e4 450 default:
e0c7dfe7 451 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 452 "with invalid format character '%c'\n", c);
453 return 0;
454 }
455 }
456 va_end(ap);
457
78f81cc4
BD		 458 if (res_type != 'v') {
459 result.length = sizeof(out_obj);
460 result.pointer = &out_obj;
461 resultp = &result;
462 } else
463 resultp = NULL;
1da177e4 464
78f81cc4 465 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 466
467 switch (res_type) {
78f81cc4 468 case 'd': /* int */
1da177e4
LT		 469 if (res)
470 *(int *)res = out_obj.integer.value;
471 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
472 break;
78f81cc4 473 case 'v': /* void */
1da177e4
LT		 474 success = status == AE_OK;
475 break;
78f81cc4 476 /* add more types as needed */
1da177e4 477 default:
e0c7dfe7 478 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 479 "with invalid format character '%c'\n", res_type);
480 return 0;
481 }
482
56b6aeb0 483 if (!success && !quiet)
e0c7dfe7 484 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
56b6aeb0
HMH		 485 method, fmt0, status);
486
487 return success;
488}
489
35ff8b9f 490static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 491{
492 int v;
493
494 if (ecrd_handle) {
495 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
496 return 0;
497 *p = v;
498 } else {
499 if (ec_read(i, p) < 0)
500 return 0;
501 }
502
503 return 1;
504}
505
506static int acpi_ec_write(int i, u8 v)
507{
508 if (ecwr_handle) {
509 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
510 return 0;
511 } else {
512 if (ec_write(i, v) < 0)
513 return 0;
514 }
515
516 return 1;
517}
518
013c40e4 519#if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
56b6aeb0
HMH		 520static int _sta(acpi_handle handle)
521{
522 int status;
523
524 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
525 status = 0;
526
527 return status;
528}
013c40e4 529#endif
56b6aeb0 530
c9bea99c
HMH		 531static int issue_thinkpad_cmos_command(int cmos_cmd)
532{
533 if (!cmos_handle)
534 return -ENXIO;
535
536 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
537 return -EIO;
538
539 return 0;
540}
541
56b6aeb0
HMH		 542/*************************************************************************
543 * ACPI device model
544 */
545
35ff8b9f
HMH		 546#define TPACPI_ACPIHANDLE_INIT(object) \
547 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
f74a27d4
HMH		 548 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
549
8d376cd6 550static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 551 acpi_handle *handle, acpi_handle parent,
552 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 553{
554 int i;
555 acpi_status status;
556
5ae930e6
HMH		 557 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
558 name);
559
56b6aeb0
HMH		 560 for (i = 0; i < num_paths; i++) {
561 status = acpi_get_handle(parent, paths[i], handle);
562 if (ACPI_SUCCESS(status)) {
563 *path = paths[i];
5ae930e6
HMH		 564 dbg_printk(TPACPI_DBG_INIT,
565 "Found ACPI handle %s for %s\n",
566 *path, name);
56b6aeb0
HMH		 567 return;
568 }
569 }
570
5ae930e6
HMH		 571 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
572 name);
56b6aeb0
HMH		 573 *handle = NULL;
574}
575
8d376cd6 576static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 577{
578 struct ibm_struct *ibm = data;
579
8fef502e
HMH		 580 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
581 return;
582
8d376cd6 583 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 584 return;
585
8d376cd6 586 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 587}
588
8d376cd6 589static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 590{
591 acpi_status status;
5ae930e6 592 int rc;
56b6aeb0 593
8d376cd6
HMH		 594 BUG_ON(!ibm->acpi);
595
596 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 597 return 0;
598
5ae930e6 599 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 600 "setting up ACPI notify for %s\n", ibm->name);
601
5ae930e6
HMH		 602 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
603 if (rc < 0) {
e0c7dfe7 604 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
5ae930e6 605 ibm->name, rc);
56b6aeb0
HMH		 606 return -ENODEV;
607 }
608
db89b4f0 609 ibm->acpi->device->driver_data = ibm;
8d376cd6 610 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 611 TPACPI_ACPI_EVENT_PREFIX,
643f12db 612 ibm->name);
56b6aeb0 613
8d376cd6
HMH		 614 status = acpi_install_notify_handler(*ibm->acpi->handle,
615 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 616 if (ACPI_FAILURE(status)) {
617 if (status == AE_ALREADY_EXISTS) {
35ff8b9f
HMH		 618 printk(TPACPI_NOTICE
619 "another device driver is already "
620 "handling %s events\n", ibm->name);
56b6aeb0 621 } else {
35ff8b9f
HMH		 622 printk(TPACPI_ERR
623 "acpi_install_notify_handler(%s) failed: %d\n",
624 ibm->name, status);
56b6aeb0
HMH		 625 }
626 return -ENODEV;
627 }
8d376cd6 628 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 629 return 0;
630}
631
8d376cd6 632static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 633{
634 return 0;
635}
636
6700121b 637static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 638{
5ae930e6 639 int rc;
56b6aeb0 640
fe08bc4b
HMH		 641 dbg_printk(TPACPI_DBG_INIT,
642 "registering %s as an ACPI driver\n", ibm->name);
643
8d376cd6
HMH		 644 BUG_ON(!ibm->acpi);
645
646 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
647 if (!ibm->acpi->driver) {
4f778b92
MK		 648 printk(TPACPI_ERR
649 "failed to allocate memory for ibm->acpi->driver\n");
5fba344c 650 return -ENOMEM;
56b6aeb0
HMH		 651 }
652
e0c7dfe7 653 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 654 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 655
8d376cd6 656 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 657
5ae930e6
HMH		 658 rc = acpi_bus_register_driver(ibm->acpi->driver);
659 if (rc < 0) {
e0c7dfe7 660 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 661 ibm->name, rc);
8d376cd6
HMH		 662 kfree(ibm->acpi->driver);
663 ibm->acpi->driver = NULL;
5ae930e6 664 } else if (!rc)
8d376cd6 665 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 666
5ae930e6 667 return rc;
56b6aeb0
HMH		 668}
669
670
671/****************************************************************************
672 ****************************************************************************
673 *
674 * Procfs Helpers
675 *
676 ****************************************************************************
677 ****************************************************************************/
678
8d376cd6
HMH		 679static int dispatch_procfs_read(char *page, char **start, off_t off,
680 int count, int *eof, void *data)
56b6aeb0
HMH		 681{
682 struct ibm_struct *ibm = data;
683 int len;
684
685 if (!ibm || !ibm->read)
686 return -EINVAL;
687
688 len = ibm->read(page);
689 if (len < 0)
690 return len;
691
692 if (len <= off + count)
693 *eof = 1;
694 *start = page + off;
695 len -= off;
696 if (len > count)
697 len = count;
698 if (len < 0)
699 len = 0;
700
701 return len;
702}
703
8d376cd6 704static int dispatch_procfs_write(struct file *file,
35ff8b9f 705 const char __user *userbuf,
8d376cd6 706 unsigned long count, void *data)
56b6aeb0
HMH		 707{
708 struct ibm_struct *ibm = data;
709 char *kernbuf;
710 int ret;
711
712 if (!ibm || !ibm->write)
713 return -EINVAL;
714
715 kernbuf = kmalloc(count + 2, GFP_KERNEL);
716 if (!kernbuf)
717 return -ENOMEM;
1da177e4 718
56b6aeb0
HMH		 719 if (copy_from_user(kernbuf, userbuf, count)) {
720 kfree(kernbuf);
721 return -EFAULT;
722 }
1da177e4 723
56b6aeb0
HMH		 724 kernbuf[count] = 0;
725 strcat(kernbuf, ",");
726 ret = ibm->write(kernbuf);
727 if (ret == 0)
728 ret = count;
1da177e4 729
56b6aeb0
HMH		 730 kfree(kernbuf);
731
732 return ret;
1da177e4
LT		 733}
734
735static char *next_cmd(char **cmds)
736{
737 char *start = *cmds;
738 char *end;
739
740 while ((end = strchr(start, ',')) && end == start)
741 start = end + 1;
742
743 if (!end)
744 return NULL;
745
746 *end = 0;
747 *cmds = end + 1;
748 return start;
749}
750
56b6aeb0 751
54ae1501
HMH		 752/****************************************************************************
753 ****************************************************************************
754 *
7f5d1cd6 755 * Device model: input, hwmon and platform
54ae1501
HMH		 756 *
757 ****************************************************************************
758 ****************************************************************************/
759
94954cc6 760static struct platform_device *tpacpi_pdev;
7fd40029 761static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 762static struct device *tpacpi_hwmon;
7f5d1cd6 763static struct input_dev *tpacpi_inputdev;
8523ed6f 764static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 765static LIST_HEAD(tpacpi_all_drivers);
e295e850 766
083f1760
HMH		 767static int tpacpi_suspend_handler(struct platform_device *pdev,
768 pm_message_t state)
769{
770 struct ibm_struct *ibm, *itmp;
771
772 list_for_each_entry_safe(ibm, itmp,
773 &tpacpi_all_drivers,
774 all_drivers) {
775 if (ibm->suspend)
776 (ibm->suspend)(state);
777 }
778
779 return 0;
780}
781
e295e850
HMH		 782static int tpacpi_resume_handler(struct platform_device *pdev)
783{
784 struct ibm_struct *ibm, *itmp;
785
786 list_for_each_entry_safe(ibm, itmp,
787 &tpacpi_all_drivers,
788 all_drivers) {
789 if (ibm->resume)
790 (ibm->resume)();
791 }
792
793 return 0;
794}
795
90d9d3c7
HMH		 796static void tpacpi_shutdown_handler(struct platform_device *pdev)
797{
798 struct ibm_struct *ibm, *itmp;
799
800 list_for_each_entry_safe(ibm, itmp,
801 &tpacpi_all_drivers,
802 all_drivers) {
803 if (ibm->shutdown)
804 (ibm->shutdown)();
805 }
806}
807
54ae1501
HMH		 808static struct platform_driver tpacpi_pdriver = {
809 .driver = {
e0c7dfe7 810 .name = TPACPI_DRVR_NAME,
54ae1501
HMH		 811 .owner = THIS_MODULE,
812 },
083f1760 813 .suspend = tpacpi_suspend_handler,
e295e850 814 .resume = tpacpi_resume_handler,
90d9d3c7 815 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 816};
817
7fd40029
HMH		 818static struct platform_driver tpacpi_hwmon_pdriver = {
819 .driver = {
e0c7dfe7 820 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 821 .owner = THIS_MODULE,
822 },
823};
54ae1501 824
176750d6 825/*************************************************************************
b21a15f6 826 * sysfs support helpers
176750d6
HMH		 827 */
828
b21a15f6
HMH		 829struct attribute_set {
830 unsigned int members, max_members;
831 struct attribute_group group;
176750d6
HMH		 832};
833
7252374a
HMH		 834struct attribute_set_obj {
835 struct attribute_set s;
836 struct attribute *a;
837} __attribute__((packed));
838
839static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 840 const char *name)
7252374a
HMH		 841{
842 struct attribute_set_obj *sobj;
843
844 if (max_members == 0)
845 return NULL;
846
847 /* Allocates space for implicit NULL at the end too */
848 sobj = kzalloc(sizeof(struct attribute_set_obj) +
849 max_members * sizeof(struct attribute *),
850 GFP_KERNEL);
851 if (!sobj)
852 return NULL;
853 sobj->s.max_members = max_members;
854 sobj->s.group.attrs = &sobj->a;
855 sobj->s.group.name = name;
856
857 return &sobj->s;
858}
859
f74a27d4
HMH		 860#define destroy_attr_set(_set) \
861 kfree(_set);
862
7252374a 863/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 864static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 865{
866 if (!s || !attr)
867 return -EINVAL;
868
869 if (s->members >= s->max_members)
870 return -ENOMEM;
871
872 s->group.attrs[s->members] = attr;
873 s->members++;
874
875 return 0;
876}
877
35ff8b9f 878static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 879 struct attribute **attr,
880 unsigned int count)
881{
882 int i, res;
883
884 for (i = 0; i < count; i++) {
885 res = add_to_attr_set(s, attr[i]);
886 if (res)
887 return res;
888 }
889
890 return 0;
891}
892
35ff8b9f 893static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 894{
895 sysfs_remove_group(kobj, &s->group);
896 destroy_attr_set(s);
897}
898
f74a27d4
HMH		 899#define register_attr_set_with_sysfs(_attr_set, _kobj) \
900 sysfs_create_group(_kobj, &_attr_set->group)
901
7252374a
HMH		 902static int parse_strtoul(const char *buf,
903 unsigned long max, unsigned long *value)
904{
905 char *endp;
906
32afbf07
HMH		 907 while (*buf && isspace(*buf))
908 buf++;
7252374a
HMH		 909 *value = simple_strtoul(buf, &endp, 0);
910 while (*endp && isspace(*endp))
911 endp++;
912 if (*endp || *value > max)
913 return -EINVAL;
914
915 return 0;
916}
917
d64c81c4
HMH		 918static void tpacpi_disable_brightness_delay(void)
919{
920 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
921 printk(TPACPI_NOTICE
922 "ACPI backlight control delay disabled\n");
923}
924
b5972796
HMH		 925static int __init tpacpi_query_bcl_levels(acpi_handle handle)
926{
927 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
928 union acpi_object *obj;
929 int rc;
930
931 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
932 obj = (union acpi_object *)buffer.pointer;
933 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
934 printk(TPACPI_ERR "Unknown _BCL data, "
935 "please report this to %s\n", TPACPI_MAIL);
936 rc = 0;
937 } else {
938 rc = obj->package.count;
939 }
940 } else {
941 return 0;
942 }
943
944 kfree(buffer.pointer);
945 return rc;
946}
947
948static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
949 u32 lvl, void *context, void **rv)
950{
951 char name[ACPI_PATH_SEGMENT_LENGTH];
952 struct acpi_buffer buffer = { sizeof(name), &name };
953
954 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
955 !strncmp("_BCL", name, sizeof(name) - 1)) {
956 BUG_ON(!rv || !*rv);
957 **(int **)rv = tpacpi_query_bcl_levels(handle);
958 return AE_CTRL_TERMINATE;
959 } else {
960 return AE_OK;
961 }
962}
963
964/*
965 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
966 */
967static int __init tpacpi_check_std_acpi_brightness_support(void)
968{
969 int status;
970 int bcl_levels = 0;
971 void *bcl_ptr = &bcl_levels;
972
973 if (!vid_handle) {
974 TPACPI_ACPIHANDLE_INIT(vid);
975 }
976 if (!vid_handle)
977 return 0;
978
979 /*
980 * Search for a _BCL method, and execute it. This is safe on all
981 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
982 * BIOS in ACPI backlight control mode. We do NOT have to care
983 * about calling the _BCL method in an enabled video device, any
984 * will do for our purposes.
985 */
986
987 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
988 tpacpi_acpi_walk_find_bcl, NULL,
989 &bcl_ptr);
990
991 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
992 tp_features.bright_acpimode = 1;
993 return (bcl_levels - 2);
994 }
995
996 return 0;
997}
998
0e74dc26
HMH		 999static int __init tpacpi_new_rfkill(const unsigned int id,
1000 struct rfkill **rfk,
1001 const enum rfkill_type rfktype,
1002 const char *name,
0045c0aa 1003 const bool set_default,
0e74dc26
HMH		 1004 int (*toggle_radio)(void *, enum rfkill_state),
1005 int (*get_state)(void *, enum rfkill_state *))
1006{
1007 int res;
90d9d3c7
HMH		 1008 enum rfkill_state initial_state = RFKILL_STATE_SOFT_BLOCKED;
1009
1010 res = get_state(NULL, &initial_state);
1011 if (res < 0) {
1012 printk(TPACPI_ERR
1013 "failed to read initial state for %s, error %d; "
1014 "will turn radio off\n", name, res);
0045c0aa 1015 } else if (set_default) {
90d9d3c7
HMH		 1016 /* try to set the initial state as the default for the rfkill
1017 * type, since we ask the firmware to preserve it across S5 in
1018 * NVRAM */
1019 rfkill_set_default(rfktype,
1020 (initial_state == RFKILL_STATE_UNBLOCKED) ?
1021 RFKILL_STATE_UNBLOCKED :
1022 RFKILL_STATE_SOFT_BLOCKED);
1023 }
0e74dc26
HMH		 1024
1025 *rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype);
1026 if (!*rfk) {
1027 printk(TPACPI_ERR
1028 "failed to allocate memory for rfkill class\n");
1029 return -ENOMEM;
1030 }
1031
1032 (*rfk)->name = name;
1033 (*rfk)->get_state = get_state;
1034 (*rfk)->toggle_radio = toggle_radio;
90d9d3c7 1035 (*rfk)->state = initial_state;
0e74dc26
HMH		 1036
1037 res = rfkill_register(*rfk);
1038 if (res < 0) {
1039 printk(TPACPI_ERR
1040 "failed to register %s rfkill switch: %d\n",
1041 name, res);
1042 rfkill_free(*rfk);
1043 *rfk = NULL;
1044 return res;
1045 }
1046
1047 return 0;
1048}
1049
73a94d86
HMH		 1050static void printk_deprecated_attribute(const char * const what,
1051 const char * const details)
1052{
1053 tpacpi_log_usertask("deprecated sysfs attribute");
1054 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
1055 "will be removed. %s\n",
1056 what, details);
1057}
1058
1059static void printk_deprecated_rfkill_attribute(const char * const what)
1060{
1061 printk_deprecated_attribute(what,
1062 "Please switch to generic rfkill before year 2010");
1063}
1064
56b6aeb0 1065/*************************************************************************
b21a15f6 1066 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1067 */
1068
b21a15f6
HMH		 1069/* interface_version --------------------------------------------------- */
1070static ssize_t tpacpi_driver_interface_version_show(
1071 struct device_driver *drv,
1072 char *buf)
1da177e4 1073{
b21a15f6
HMH		 1074 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1075}
1076
1077static DRIVER_ATTR(interface_version, S_IRUGO,
1078 tpacpi_driver_interface_version_show, NULL);
1079
1080/* debug_level --------------------------------------------------------- */
1081static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1082 char *buf)
1083{
1084 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1085}
1086
1087static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1088 const char *buf, size_t count)
1089{
1090 unsigned long t;
1091
1092 if (parse_strtoul(buf, 0xffff, &t))
1093 return -EINVAL;
1094
1095 dbg_level = t;
1096
1097 return count;
1098}
1099
1100static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1101 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1102
1103/* version ------------------------------------------------------------- */
1104static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1105 char *buf)
1106{
35ff8b9f
HMH		 1107 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1108 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 1109}
1110
1111static DRIVER_ATTR(version, S_IRUGO,
1112 tpacpi_driver_version_show, NULL);
1113
1114/* --------------------------------------------------------------------- */
1115
a73f3091
HMH		 1116#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1117
1118static void tpacpi_send_radiosw_update(void);
1119
1120/* wlsw_emulstate ------------------------------------------------------ */
1121static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1122 char *buf)
1123{
1124 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1125}
1126
1127static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1128 const char *buf, size_t count)
1129{
1130 unsigned long t;
1131
1132 if (parse_strtoul(buf, 1, &t))
1133 return -EINVAL;
1134
1135 if (tpacpi_wlsw_emulstate != t) {
1136 tpacpi_wlsw_emulstate = !!t;
1137 tpacpi_send_radiosw_update();
1138 } else
1139 tpacpi_wlsw_emulstate = !!t;
1140
1141 return count;
1142}
1143
1144static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1145 tpacpi_driver_wlsw_emulstate_show,
1146 tpacpi_driver_wlsw_emulstate_store);
1147
1148/* bluetooth_emulstate ------------------------------------------------- */
1149static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1150 struct device_driver *drv,
1151 char *buf)
1152{
1153 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1154}
1155
1156static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1157 struct device_driver *drv,
1158 const char *buf, size_t count)
1159{
1160 unsigned long t;
1161
1162 if (parse_strtoul(buf, 1, &t))
1163 return -EINVAL;
1164
1165 tpacpi_bluetooth_emulstate = !!t;
1166
1167 return count;
1168}
1169
1170static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1171 tpacpi_driver_bluetooth_emulstate_show,
1172 tpacpi_driver_bluetooth_emulstate_store);
1173
1174/* wwan_emulstate ------------------------------------------------- */
1175static ssize_t tpacpi_driver_wwan_emulstate_show(
1176 struct device_driver *drv,
1177 char *buf)
1178{
1179 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1180}
1181
1182static ssize_t tpacpi_driver_wwan_emulstate_store(
1183 struct device_driver *drv,
1184 const char *buf, size_t count)
1185{
1186 unsigned long t;
1187
1188 if (parse_strtoul(buf, 1, &t))
1189 return -EINVAL;
1190
1191 tpacpi_wwan_emulstate = !!t;
1192
1193 return count;
1194}
1195
1196static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1197 tpacpi_driver_wwan_emulstate_show,
1198 tpacpi_driver_wwan_emulstate_store);
1199
0045c0aa
HMH		 1200/* uwb_emulstate ------------------------------------------------- */
1201static ssize_t tpacpi_driver_uwb_emulstate_show(
1202 struct device_driver *drv,
1203 char *buf)
1204{
1205 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1206}
1207
1208static ssize_t tpacpi_driver_uwb_emulstate_store(
1209 struct device_driver *drv,
1210 const char *buf, size_t count)
1211{
1212 unsigned long t;
1213
1214 if (parse_strtoul(buf, 1, &t))
1215 return -EINVAL;
1216
1217 tpacpi_uwb_emulstate = !!t;
1218
1219 return count;
1220}
1221
1222static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1223 tpacpi_driver_uwb_emulstate_show,
1224 tpacpi_driver_uwb_emulstate_store);
a73f3091
HMH		 1225#endif
1226
1227/* --------------------------------------------------------------------- */
1228
35ff8b9f 1229static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1230 &driver_attr_debug_level, &driver_attr_version,
1231 &driver_attr_interface_version,
1232};
1233
1234static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1235{
1236 int i, res;
1237
1238 i = 0;
1239 res = 0;
1240 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1241 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1242 i++;
1243 }
1244
a73f3091
HMH		 1245#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1246 if (!res && dbg_wlswemul)
1247 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1248 if (!res && dbg_bluetoothemul)
1249 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1250 if (!res && dbg_wwanemul)
1251 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1252 if (!res && dbg_uwbemul)
1253 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1254#endif
1255
b21a15f6
HMH		 1256 return res;
1257}
1258
1259static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1260{
1261 int i;
1262
35ff8b9f 1263 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1264 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1265
1266#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1267 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1268 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1269 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1270 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1271#endif
b21a15f6
HMH		 1272}
1273
1274/****************************************************************************
1275 ****************************************************************************
1276 *
1277 * Subdrivers
1278 *
1279 ****************************************************************************
1280 ****************************************************************************/
1281
1282/*************************************************************************
1283 * thinkpad-acpi init subdriver
1284 */
1285
1286static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1287{
e0c7dfe7
HMH		 1288 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1289 printk(TPACPI_INFO "%s\n", TPACPI_URL);
b21a15f6 1290
e0c7dfe7 1291 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
b21a15f6
HMH		 1292 (thinkpad_id.bios_version_str) ?
1293 thinkpad_id.bios_version_str : "unknown",
1294 (thinkpad_id.ec_version_str) ?
1295 thinkpad_id.ec_version_str : "unknown");
d5a2f2f1
HMH		 1296
1297 if (thinkpad_id.vendor && thinkpad_id.model_str)
8c74adbc 1298 printk(TPACPI_INFO "%s %s, model %s\n",
d5a2f2f1
HMH		 1299 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1300 "IBM" : ((thinkpad_id.vendor ==
1301 PCI_VENDOR_ID_LENOVO) ?
1302 "Lenovo" : "Unknown vendor"),
8c74adbc
HMH		 1303 thinkpad_id.model_str,
1304 (thinkpad_id.nummodel_str) ?
1305 thinkpad_id.nummodel_str : "unknown");
3945ac36 1306
1da177e4
LT		 1307 return 0;
1308}
1309
643f12db 1310static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 1311{
1312 int len = 0;
1313
e0c7dfe7
HMH		 1314 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1315 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1da177e4
LT		 1316
1317 return len;
1318}
1319
a5763f22
HMH		 1320static struct ibm_struct thinkpad_acpi_driver_data = {
1321 .name = "driver",
1322 .read = thinkpad_acpi_driver_read,
1323};
1324
56b6aeb0
HMH		 1325/*************************************************************************
1326 * Hotkey subdriver
1327 */
1328
f74a27d4
HMH		 1329enum { /* hot key scan codes (derived from ACPI DSDT) */
1330 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1331 TP_ACPI_HOTKEYSCAN_FNF2,
1332 TP_ACPI_HOTKEYSCAN_FNF3,
1333 TP_ACPI_HOTKEYSCAN_FNF4,
1334 TP_ACPI_HOTKEYSCAN_FNF5,
1335 TP_ACPI_HOTKEYSCAN_FNF6,
1336 TP_ACPI_HOTKEYSCAN_FNF7,
1337 TP_ACPI_HOTKEYSCAN_FNF8,
1338 TP_ACPI_HOTKEYSCAN_FNF9,
1339 TP_ACPI_HOTKEYSCAN_FNF10,
1340 TP_ACPI_HOTKEYSCAN_FNF11,
1341 TP_ACPI_HOTKEYSCAN_FNF12,
1342 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1343 TP_ACPI_HOTKEYSCAN_FNINSERT,
1344 TP_ACPI_HOTKEYSCAN_FNDELETE,
1345 TP_ACPI_HOTKEYSCAN_FNHOME,
1346 TP_ACPI_HOTKEYSCAN_FNEND,
1347 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1348 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1349 TP_ACPI_HOTKEYSCAN_FNSPACE,
1350 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1351 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1352 TP_ACPI_HOTKEYSCAN_MUTE,
1353 TP_ACPI_HOTKEYSCAN_THINKPAD,
1354};
1355
01e88f25
HMH		 1356enum { /* Keys available through NVRAM polling */
1357 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1358 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1359};
1360
1361enum { /* Positions of some of the keys in hotkey masks */
1362 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1363 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1364 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1365 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1366 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1367 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1368 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1369 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1370 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1371 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1372 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1373};
1374
1375enum { /* NVRAM to ACPI HKEY group map */
1376 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1377 TP_ACPI_HKEY_ZOOM_MASK |
1378 TP_ACPI_HKEY_DISPSWTCH_MASK |
1379 TP_ACPI_HKEY_HIBERNATE_MASK,
1380 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1381 TP_ACPI_HKEY_BRGHTDWN_MASK,
1382 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1383 TP_ACPI_HKEY_VOLDWN_MASK |
1384 TP_ACPI_HKEY_MUTE_MASK,
1385};
1386
1387#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1388struct tp_nvram_state {
1389 u16 thinkpad_toggle:1;
1390 u16 zoom_toggle:1;
1391 u16 display_toggle:1;
1392 u16 thinklight_toggle:1;
1393 u16 hibernate_toggle:1;
1394 u16 displayexp_toggle:1;
1395 u16 display_state:1;
1396 u16 brightness_toggle:1;
1397 u16 volume_toggle:1;
1398 u16 mute:1;
1399
1400 u8 brightness_level;
1401 u8 volume_level;
1402};
1403
1404static struct task_struct *tpacpi_hotkey_task;
1405static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1406static int hotkey_poll_freq = 10; /* Hz */
1407static struct mutex hotkey_thread_mutex;
1408static struct mutex hotkey_thread_data_mutex;
1409static unsigned int hotkey_config_change;
1410
1411#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1412
1413#define hotkey_source_mask 0U
1414
1415#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1416
f74a27d4
HMH		 1417static struct mutex hotkey_mutex;
1418
a713b4d7
HMH		 1419static enum { /* Reasons for waking up */
1420 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1421 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1422 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1423} hotkey_wakeup_reason;
1424
1425static int hotkey_autosleep_ack;
1426
ae92bd17 1427static u32 hotkey_orig_mask;
9b010de5 1428static u32 hotkey_all_mask;
6a38abbf 1429static u32 hotkey_reserved_mask;
b2c985e7 1430static u32 hotkey_mask;
6a38abbf 1431
b21a15f6
HMH		 1432static unsigned int hotkey_report_mode;
1433
edf0e0e5 1434static u16 *hotkey_keycode_map;
78f81cc4 1435
94954cc6 1436static struct attribute_set *hotkey_dev_attributes;
a0416420 1437
01e88f25
HMH		 1438#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1439#define HOTKEY_CONFIG_CRITICAL_START \
35ff8b9f
HMH		 1440 do { \
1441 mutex_lock(&hotkey_thread_data_mutex); \
1442 hotkey_config_change++; \
1443 } while (0);
01e88f25
HMH		 1444#define HOTKEY_CONFIG_CRITICAL_END \
1445 mutex_unlock(&hotkey_thread_data_mutex);
1446#else
1447#define HOTKEY_CONFIG_CRITICAL_START
1448#define HOTKEY_CONFIG_CRITICAL_END
1449#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1450
6c231bd5
HMH		 1451/* HKEY.MHKG() return bits */
1452#define TP_HOTKEY_TABLET_MASK (1 << 3)
1453
74941a69
HMH		 1454static int hotkey_get_wlsw(int *status)
1455{
a73f3091
HMH		 1456#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1457 if (dbg_wlswemul) {
1458 *status = !!tpacpi_wlsw_emulstate;
1459 return 0;
1460 }
1461#endif
74941a69
HMH		 1462 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1463 return -EIO;
1464 return 0;
1465}
1466
6c231bd5
HMH		 1467static int hotkey_get_tablet_mode(int *status)
1468{
1469 int s;
1470
1471 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
1472 return -EIO;
1473
cee47f5a
HMH		 1474 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
1475 return 0;
6c231bd5
HMH		 1476}
1477
b2c985e7
HMH		 1478/*
1479 * Call with hotkey_mutex held
1480 */
1481static int hotkey_mask_get(void)
1482{
01e88f25
HMH		 1483 u32 m = 0;
1484
b2c985e7 1485 if (tp_features.hotkey_mask) {
01e88f25 1486 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7
HMH		 1487 return -EIO;
1488 }
01e88f25 1489 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
b2c985e7
HMH		 1490
1491 return 0;
1492}
1493
1494/*
1495 * Call with hotkey_mutex held
1496 */
1497static int hotkey_mask_set(u32 mask)
1498{
1499 int i;
1500 int rc = 0;
1501
1502 if (tp_features.hotkey_mask) {
92889022
HMH		 1503 if (!tp_warned.hotkey_mask_ff &&
1504 (mask == 0xffff || mask == 0xffffff ||
1505 mask == 0xffffffff)) {
1506 tp_warned.hotkey_mask_ff = 1;
1507 printk(TPACPI_NOTICE
1508 "setting the hotkey mask to 0x%08x is likely "
1509 "not the best way to go about it\n", mask);
1510 printk(TPACPI_NOTICE
1511 "please consider using the driver defaults, "
1512 "and refer to up-to-date thinkpad-acpi "
1513 "documentation\n");
1514 }
1515
01e88f25 1516 HOTKEY_CONFIG_CRITICAL_START
b2c985e7
HMH		 1517 for (i = 0; i < 32; i++) {
1518 u32 m = 1 << i;
01e88f25
HMH		 1519 /* enable in firmware mask only keys not in NVRAM
1520 * mode, but enable the key in the cached hotkey_mask
1521 * regardless of mode, or the key will end up
1522 * disabled by hotkey_mask_get() */
b2c985e7
HMH		 1523 if (!acpi_evalf(hkey_handle,
1524 NULL, "MHKM", "vdd", i + 1,
01e88f25 1525 !!((mask & ~hotkey_source_mask) & m))) {
b2c985e7
HMH		 1526 rc = -EIO;
1527 break;
1528 } else {
1529 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1530 }
1531 }
01e88f25 1532 HOTKEY_CONFIG_CRITICAL_END
b2c985e7
HMH		 1533
1534 /* hotkey_mask_get must be called unconditionally below */
01e88f25
HMH		 1535 if (!hotkey_mask_get() && !rc &&
1536 (hotkey_mask & ~hotkey_source_mask) !=
1537 (mask & ~hotkey_source_mask)) {
e0c7dfe7 1538 printk(TPACPI_NOTICE
b2c985e7
HMH		 1539 "requested hot key mask 0x%08x, but "
1540 "firmware forced it to 0x%08x\n",
1541 mask, hotkey_mask);
1542 }
01e88f25
HMH		 1543 } else {
1544#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1545 HOTKEY_CONFIG_CRITICAL_START
1546 hotkey_mask = mask & hotkey_source_mask;
1547 HOTKEY_CONFIG_CRITICAL_END
1548 hotkey_mask_get();
1549 if (hotkey_mask != mask) {
e0c7dfe7 1550 printk(TPACPI_NOTICE
01e88f25
HMH		 1551 "requested hot key mask 0x%08x, "
1552 "forced to 0x%08x (NVRAM poll mask is "
1553 "0x%08x): no firmware mask support\n",
1554 mask, hotkey_mask, hotkey_source_mask);
1555 }
1556#else
1557 hotkey_mask_get();
1558 rc = -ENXIO;
1559#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
b2c985e7
HMH		 1560 }
1561
1562 return rc;
1563}
1564
1565static int hotkey_status_get(int *status)
1566{
1567 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1568 return -EIO;
1569
1570 return 0;
1571}
1572
2586d566 1573static int hotkey_status_set(bool enable)
b2c985e7 1574{
2586d566 1575 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 1576 return -EIO;
1577
1578 return 0;
1579}
1580
6c231bd5 1581static void tpacpi_input_send_tabletsw(void)
b3ec6f91 1582{
6c231bd5 1583 int state;
b3ec6f91 1584
6c231bd5
HMH		 1585 if (tp_features.hotkey_tablet &&
1586 !hotkey_get_tablet_mode(&state)) {
1587 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 1588
6c231bd5
HMH		 1589 input_report_switch(tpacpi_inputdev,
1590 SW_TABLET_MODE, !!state);
1591 input_sync(tpacpi_inputdev);
1592
1593 mutex_unlock(&tpacpi_inputdev_send_mutex);
1594 }
b3ec6f91
HMH		 1595}
1596
b7c8c200
HMH		 1597static void tpacpi_input_send_key(unsigned int scancode)
1598{
1599 unsigned int keycode;
1600
1601 keycode = hotkey_keycode_map[scancode];
1602
1603 if (keycode != KEY_RESERVED) {
1604 mutex_lock(&tpacpi_inputdev_send_mutex);
1605
1606 input_report_key(tpacpi_inputdev, keycode, 1);
1607 if (keycode == KEY_UNKNOWN)
1608 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1609 scancode);
1610 input_sync(tpacpi_inputdev);
1611
1612 input_report_key(tpacpi_inputdev, keycode, 0);
1613 if (keycode == KEY_UNKNOWN)
1614 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1615 scancode);
1616 input_sync(tpacpi_inputdev);
1617
1618 mutex_unlock(&tpacpi_inputdev_send_mutex);
1619 }
1620}
1621
01e88f25
HMH		 1622#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1623static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1624
1625static void tpacpi_hotkey_send_key(unsigned int scancode)
1626{
1627 tpacpi_input_send_key(scancode);
1628 if (hotkey_report_mode < 2) {
1629 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1630 0x80, 0x1001 + scancode);
1631 }
1632}
1633
1634static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1635{
1636 u8 d;
1637
1638 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1639 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1640 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1641 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1642 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1643 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1644 }
1645 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1646 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1647 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1648 }
1649 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1650 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1651 n->displayexp_toggle =
1652 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1653 }
1654 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1655 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1656 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1657 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1658 n->brightness_toggle =
1659 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1660 }
1661 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1662 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1663 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1664 >> TP_NVRAM_POS_LEVEL_VOLUME;
1665 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1666 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1667 }
1668}
1669
1670#define TPACPI_COMPARE_KEY(__scancode, __member) \
35ff8b9f
HMH		 1671 do { \
1672 if ((mask & (1 << __scancode)) && \
1673 oldn->__member != newn->__member) \
1674 tpacpi_hotkey_send_key(__scancode); \
1675 } while (0)
01e88f25
HMH		 1676
1677#define TPACPI_MAY_SEND_KEY(__scancode) \
1678 do { if (mask & (1 << __scancode)) \
1679 tpacpi_hotkey_send_key(__scancode); } while (0)
1680
1681static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
35ff8b9f 1682 struct tp_nvram_state *newn,
01e88f25
HMH		 1683 u32 mask)
1684{
1685 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1686 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1687 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1688 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1689
1690 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1691
1692 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1693
1694 /* handle volume */
1695 if (oldn->volume_toggle != newn->volume_toggle) {
1696 if (oldn->mute != newn->mute) {
1697 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1698 }
1699 if (oldn->volume_level > newn->volume_level) {
1700 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1701 } else if (oldn->volume_level < newn->volume_level) {
1702 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1703 } else if (oldn->mute == newn->mute) {
1704 /* repeated key presses that didn't change state */
1705 if (newn->mute) {
1706 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1707 } else if (newn->volume_level != 0) {
1708 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1709 } else {
1710 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1711 }
1712 }
1713 }
1714
1715 /* handle brightness */
1716 if (oldn->brightness_toggle != newn->brightness_toggle) {
1717 if (oldn->brightness_level < newn->brightness_level) {
1718 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1719 } else if (oldn->brightness_level > newn->brightness_level) {
1720 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1721 } else {
1722 /* repeated key presses that didn't change state */
1723 if (newn->brightness_level != 0) {
1724 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1725 } else {
1726 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1727 }
1728 }
1729 }
1730}
1731
1732#undef TPACPI_COMPARE_KEY
1733#undef TPACPI_MAY_SEND_KEY
1734
1735static int hotkey_kthread(void *data)
1736{
1737 struct tp_nvram_state s[2];
1738 u32 mask;
1739 unsigned int si, so;
1740 unsigned long t;
1741 unsigned int change_detector, must_reset;
1742
1743 mutex_lock(&hotkey_thread_mutex);
1744
1745 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1746 goto exit;
1747
1748 set_freezable();
1749
1750 so = 0;
1751 si = 1;
1752 t = 0;
1753
1754 /* Initial state for compares */
1755 mutex_lock(&hotkey_thread_data_mutex);
1756 change_detector = hotkey_config_change;
1757 mask = hotkey_source_mask & hotkey_mask;
1758 mutex_unlock(&hotkey_thread_data_mutex);
1759 hotkey_read_nvram(&s[so], mask);
1760
1761 while (!kthread_should_stop() && hotkey_poll_freq) {
1762 if (t == 0)
1763 t = 1000/hotkey_poll_freq;
1764 t = msleep_interruptible(t);
1765 if (unlikely(kthread_should_stop()))
1766 break;
1767 must_reset = try_to_freeze();
1768 if (t > 0 && !must_reset)
1769 continue;
1770
1771 mutex_lock(&hotkey_thread_data_mutex);
1772 if (must_reset || hotkey_config_change != change_detector) {
1773 /* forget old state on thaw or config change */
1774 si = so;
1775 t = 0;
1776 change_detector = hotkey_config_change;
1777 }
1778 mask = hotkey_source_mask & hotkey_mask;
1779 mutex_unlock(&hotkey_thread_data_mutex);
1780
1781 if (likely(mask)) {
1782 hotkey_read_nvram(&s[si], mask);
1783 if (likely(si != so)) {
1784 hotkey_compare_and_issue_event(&s[so], &s[si],
35ff8b9f 1785 mask);
01e88f25
HMH		 1786 }
1787 }
1788
1789 so = si;
1790 si ^= 1;
1791 }
1792
1793exit:
1794 mutex_unlock(&hotkey_thread_mutex);
1795 return 0;
1796}
1797
1798static void hotkey_poll_stop_sync(void)
1799{
1800 if (tpacpi_hotkey_task) {
1801 if (frozen(tpacpi_hotkey_task) ||
1802 freezing(tpacpi_hotkey_task))
1803 thaw_process(tpacpi_hotkey_task);
1804
1805 kthread_stop(tpacpi_hotkey_task);
1806 tpacpi_hotkey_task = NULL;
1807 mutex_lock(&hotkey_thread_mutex);
1808 /* at this point, the thread did exit */
1809 mutex_unlock(&hotkey_thread_mutex);
1810 }
1811}
1812
1813/* call with hotkey_mutex held */
1814static void hotkey_poll_setup(int may_warn)
1815{
1816 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1817 hotkey_poll_freq > 0 &&
1818 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1819 if (!tpacpi_hotkey_task) {
1820 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 1821 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 1822 if (IS_ERR(tpacpi_hotkey_task)) {
1823 tpacpi_hotkey_task = NULL;
35ff8b9f
HMH		 1824 printk(TPACPI_ERR
1825 "could not create kernel thread "
01e88f25
HMH		 1826 "for hotkey polling\n");
1827 }
1828 }
1829 } else {
1830 hotkey_poll_stop_sync();
1831 if (may_warn &&
1832 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
35ff8b9f
HMH		 1833 printk(TPACPI_NOTICE
1834 "hot keys 0x%08x require polling, "
01e88f25
HMH		 1835 "which is currently disabled\n",
1836 hotkey_source_mask);
1837 }
1838 }
1839}
1840
1841static void hotkey_poll_setup_safe(int may_warn)
1842{
1843 mutex_lock(&hotkey_mutex);
1844 hotkey_poll_setup(may_warn);
1845 mutex_unlock(&hotkey_mutex);
1846}
1847
1bc6b9cd
HMH		 1848#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1849
1850static void hotkey_poll_setup_safe(int __unused)
1851{
1852}
1853
1854#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1855
01e88f25
HMH		 1856static int hotkey_inputdev_open(struct input_dev *dev)
1857{
1858 switch (tpacpi_lifecycle) {
1859 case TPACPI_LIFE_INIT:
1860 /*
1861 * hotkey_init will call hotkey_poll_setup_safe
1862 * at the appropriate moment
1863 */
1864 return 0;
1865 case TPACPI_LIFE_EXITING:
1866 return -EBUSY;
1867 case TPACPI_LIFE_RUNNING:
1868 hotkey_poll_setup_safe(0);
1869 return 0;
1870 }
1871
1872 /* Should only happen if tpacpi_lifecycle is corrupt */
1873 BUG();
1874 return -EBUSY;
1875}
1876
1877static void hotkey_inputdev_close(struct input_dev *dev)
1878{
1879 /* disable hotkey polling when possible */
1880 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1881 hotkey_poll_setup_safe(0);
1882}
01e88f25 1883
a0416420
HMH		 1884/* sysfs hotkey enable ------------------------------------------------- */
1885static ssize_t hotkey_enable_show(struct device *dev,
1886 struct device_attribute *attr,
1887 char *buf)
1888{
ae92bd17 1889 int res, status;
a0416420 1890
2586d566
HMH		 1891 printk_deprecated_attribute("hotkey_enable",
1892 "Hotkey reporting is always enabled");
1893
b2c985e7 1894 res = hotkey_status_get(&status);
a0416420
HMH		 1895 if (res)
1896 return res;
1897
1898 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1899}
1900
1901static ssize_t hotkey_enable_store(struct device *dev,
1902 struct device_attribute *attr,
1903 const char *buf, size_t count)
1904{
1905 unsigned long t;
2586d566
HMH		 1906
1907 printk_deprecated_attribute("hotkey_enable",
1908 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 1909
1910 if (parse_strtoul(buf, 1, &t))
1911 return -EINVAL;
1912
2586d566
HMH		 1913 if (t == 0)
1914 return -EPERM;
a0416420 1915
2586d566 1916 return count;
a0416420
HMH		 1917}
1918
1919static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 1920 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 1921 hotkey_enable_show, hotkey_enable_store);
1922
1923/* sysfs hotkey mask --------------------------------------------------- */
1924static ssize_t hotkey_mask_show(struct device *dev,
1925 struct device_attribute *attr,
1926 char *buf)
1927{
b2c985e7 1928 int res;
a0416420 1929
7646ea88 1930 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 1931 return -ERESTARTSYS;
1932 res = hotkey_mask_get();
1933 mutex_unlock(&hotkey_mutex);
a0416420 1934
b2c985e7
HMH		 1935 return (res)?
1936 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
a0416420
HMH		 1937}
1938
1939static ssize_t hotkey_mask_store(struct device *dev,
1940 struct device_attribute *attr,
1941 const char *buf, size_t count)
1942{
1943 unsigned long t;
b2c985e7 1944 int res;
a0416420 1945
ae92bd17 1946 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 1947 return -EINVAL;
1948
7646ea88 1949 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 1950 return -ERESTARTSYS;
1951
1952 res = hotkey_mask_set(t);
01e88f25
HMH		 1953
1954#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1955 hotkey_poll_setup(1);
1956#endif
1957
b2c985e7 1958 mutex_unlock(&hotkey_mutex);
a0416420
HMH		 1959
1960 return (res) ? res : count;
1961}
1962
1963static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 1964 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 1965 hotkey_mask_show, hotkey_mask_store);
1966
1967/* sysfs hotkey bios_enabled ------------------------------------------- */
1968static ssize_t hotkey_bios_enabled_show(struct device *dev,
1969 struct device_attribute *attr,
1970 char *buf)
1971{
2586d566 1972 return sprintf(buf, "0\n");
a0416420
HMH		 1973}
1974
1975static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 1976 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 1977
1978/* sysfs hotkey bios_mask ---------------------------------------------- */
1979static ssize_t hotkey_bios_mask_show(struct device *dev,
1980 struct device_attribute *attr,
1981 char *buf)
1982{
ae92bd17 1983 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 1984}
1985
1986static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 1987 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 1988
9b010de5
HMH		 1989/* sysfs hotkey all_mask ----------------------------------------------- */
1990static ssize_t hotkey_all_mask_show(struct device *dev,
1991 struct device_attribute *attr,
1992 char *buf)
1993{
01e88f25
HMH		 1994 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1995 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 1996}
1997
1998static struct device_attribute dev_attr_hotkey_all_mask =
1999 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2000
2001/* sysfs hotkey recommended_mask --------------------------------------- */
2002static ssize_t hotkey_recommended_mask_show(struct device *dev,
2003 struct device_attribute *attr,
2004 char *buf)
2005{
2006 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2007 (hotkey_all_mask | hotkey_source_mask)
2008 & ~hotkey_reserved_mask);
9b010de5
HMH		 2009}
2010
2011static struct device_attribute dev_attr_hotkey_recommended_mask =
2012 __ATTR(hotkey_recommended_mask, S_IRUGO,
2013 hotkey_recommended_mask_show, NULL);
2014
01e88f25
HMH		 2015#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2016
2017/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2018static ssize_t hotkey_source_mask_show(struct device *dev,
2019 struct device_attribute *attr,
2020 char *buf)
2021{
2022 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2023}
2024
2025static ssize_t hotkey_source_mask_store(struct device *dev,
2026 struct device_attribute *attr,
2027 const char *buf, size_t count)
2028{
2029 unsigned long t;
2030
2031 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2032 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2033 return -EINVAL;
2034
7646ea88 2035 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2036 return -ERESTARTSYS;
2037
2038 HOTKEY_CONFIG_CRITICAL_START
2039 hotkey_source_mask = t;
2040 HOTKEY_CONFIG_CRITICAL_END
2041
2042 hotkey_poll_setup(1);
2043
2044 mutex_unlock(&hotkey_mutex);
2045
2046 return count;
2047}
2048
2049static struct device_attribute dev_attr_hotkey_source_mask =
2050 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2051 hotkey_source_mask_show, hotkey_source_mask_store);
2052
2053/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2054static ssize_t hotkey_poll_freq_show(struct device *dev,
2055 struct device_attribute *attr,
2056 char *buf)
2057{
2058 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2059}
2060
2061static ssize_t hotkey_poll_freq_store(struct device *dev,
2062 struct device_attribute *attr,
2063 const char *buf, size_t count)
2064{
2065 unsigned long t;
2066
2067 if (parse_strtoul(buf, 25, &t))
2068 return -EINVAL;
2069
7646ea88 2070 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2071 return -ERESTARTSYS;
2072
2073 hotkey_poll_freq = t;
2074
2075 hotkey_poll_setup(1);
2076 mutex_unlock(&hotkey_mutex);
2077
2078 return count;
2079}
2080
2081static struct device_attribute dev_attr_hotkey_poll_freq =
2082 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2083 hotkey_poll_freq_show, hotkey_poll_freq_store);
2084
2085#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2086
50ebec09 2087/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2088static ssize_t hotkey_radio_sw_show(struct device *dev,
2089 struct device_attribute *attr,
2090 char *buf)
2091{
2092 int res, s;
2093 res = hotkey_get_wlsw(&s);
2094 if (res < 0)
2095 return res;
2096
2097 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2098}
2099
2100static struct device_attribute dev_attr_hotkey_radio_sw =
2101 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2102
50ebec09
HMH		 2103static void hotkey_radio_sw_notify_change(void)
2104{
2105 if (tp_features.hotkey_wlsw)
2106 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2107 "hotkey_radio_sw");
2108}
2109
6c231bd5
HMH		 2110/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2111static ssize_t hotkey_tablet_mode_show(struct device *dev,
2112 struct device_attribute *attr,
2113 char *buf)
2114{
2115 int res, s;
2116 res = hotkey_get_tablet_mode(&s);
2117 if (res < 0)
2118 return res;
2119
2120 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2121}
2122
2123static struct device_attribute dev_attr_hotkey_tablet_mode =
2124 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2125
2126static void hotkey_tablet_mode_notify_change(void)
2127{
2128 if (tp_features.hotkey_tablet)
2129 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2130 "hotkey_tablet_mode");
2131}
2132
ff80f137
HMH		 2133/* sysfs hotkey report_mode -------------------------------------------- */
2134static ssize_t hotkey_report_mode_show(struct device *dev,
2135 struct device_attribute *attr,
2136 char *buf)
2137{
2138 return snprintf(buf, PAGE_SIZE, "%d\n",
2139 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2140}
2141
2142static struct device_attribute dev_attr_hotkey_report_mode =
2143 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2144
50ebec09 2145/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2146static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2147 struct device_attribute *attr,
2148 char *buf)
2149{
2150 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2151}
2152
2153static struct device_attribute dev_attr_hotkey_wakeup_reason =
2154 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2155
1d5a2b54 2156static void hotkey_wakeup_reason_notify_change(void)
50ebec09
HMH		 2157{
2158 if (tp_features.hotkey_mask)
2159 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2160 "wakeup_reason");
2161}
2162
2163/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2164static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2165 struct device_attribute *attr,
2166 char *buf)
2167{
2168 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2169}
2170
2171static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2172 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2173 hotkey_wakeup_hotunplug_complete_show, NULL);
2174
1d5a2b54 2175static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09
HMH		 2176{
2177 if (tp_features.hotkey_mask)
2178 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2179 "wakeup_hotunplug_complete");
2180}
2181
a0416420
HMH		 2182/* --------------------------------------------------------------------- */
2183
ff80f137
HMH		 2184static struct attribute *hotkey_attributes[] __initdata = {
2185 &dev_attr_hotkey_enable.attr,
01e88f25 2186 &dev_attr_hotkey_bios_enabled.attr,
ff80f137 2187 &dev_attr_hotkey_report_mode.attr,
01e88f25
HMH		 2188#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2189 &dev_attr_hotkey_mask.attr,
2190 &dev_attr_hotkey_all_mask.attr,
2191 &dev_attr_hotkey_recommended_mask.attr,
2192 &dev_attr_hotkey_source_mask.attr,
2193 &dev_attr_hotkey_poll_freq.attr,
2194#endif
ff80f137
HMH		 2195};
2196
2197static struct attribute *hotkey_mask_attributes[] __initdata = {
a0416420 2198 &dev_attr_hotkey_bios_mask.attr,
01e88f25
HMH		 2199#ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2200 &dev_attr_hotkey_mask.attr,
9b010de5
HMH		 2201 &dev_attr_hotkey_all_mask.attr,
2202 &dev_attr_hotkey_recommended_mask.attr,
01e88f25 2203#endif
a713b4d7
HMH		 2204 &dev_attr_hotkey_wakeup_reason.attr,
2205 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
a0416420
HMH		 2206};
2207
0e74dc26
HMH		 2208static void bluetooth_update_rfk(void);
2209static void wan_update_rfk(void);
0045c0aa 2210static void uwb_update_rfk(void);
733e27c1
HMH		 2211static void tpacpi_send_radiosw_update(void)
2212{
2213 int wlsw;
2214
0e74dc26
HMH		 2215 /* Sync these BEFORE sending any rfkill events */
2216 if (tp_features.bluetooth)
2217 bluetooth_update_rfk();
2218 if (tp_features.wan)
2219 wan_update_rfk();
0045c0aa
HMH		 2220 if (tp_features.uwb)
2221 uwb_update_rfk();
0e74dc26 2222
733e27c1
HMH		 2223 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
2224 mutex_lock(&tpacpi_inputdev_send_mutex);
2225
2226 input_report_switch(tpacpi_inputdev,
2227 SW_RFKILL_ALL, !!wlsw);
2228 input_sync(tpacpi_inputdev);
2229
2230 mutex_unlock(&tpacpi_inputdev_send_mutex);
2231 }
2232 hotkey_radio_sw_notify_change();
2233}
2234
9c0a76e1
HMH		 2235static void hotkey_exit(void)
2236{
2237#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2238 hotkey_poll_stop_sync();
2239#endif
2240
2241 if (hotkey_dev_attributes)
2242 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2243
2244 kfree(hotkey_keycode_map);
2245
2246 if (tp_features.hotkey) {
2247 dbg_printk(TPACPI_DBG_EXIT,
2248 "restoring original hot key mask\n");
2249 /* no short-circuit boolean operator below! */
2250 if ((hotkey_mask_set(hotkey_orig_mask) |
2586d566 2251 hotkey_status_set(false)) != 0)
9c0a76e1
HMH		 2252 printk(TPACPI_ERR
2253 "failed to restore hot key mask "
2254 "to BIOS defaults\n");
2255 }
2256}
2257
a5763f22 2258static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 2259{
0f089147
HMH		 2260 /* Requirements for changing the default keymaps:
2261 *
2262 * 1. Many of the keys are mapped to KEY_RESERVED for very
2263 * good reasons. Do not change them unless you have deep
2264 * knowledge on the IBM and Lenovo ThinkPad firmware for
2265 * the various ThinkPad models. The driver behaves
2266 * differently for KEY_RESERVED: such keys have their
2267 * hot key mask *unset* in mask_recommended, and also
2268 * in the initial hot key mask programmed into the
2269 * firmware at driver load time, which means the firm-
2270 * ware may react very differently if you change them to
2271 * something else;
2272 *
2273 * 2. You must be subscribed to the linux-thinkpad and
2274 * ibm-acpi-devel mailing lists, and you should read the
2275 * list archives since 2007 if you want to change the
2276 * keymaps. This requirement exists so that you will
2277 * know the past history of problems with the thinkpad-
2278 * acpi driver keymaps, and also that you will be
2279 * listening to any bug reports;
2280 *
2281 * 3. Do not send thinkpad-acpi specific patches directly to
2282 * for merging, *ever*. Send them to the linux-acpi
2283 * mailinglist for comments. Merging is to be done only
2284 * through acpi-test and the ACPI maintainer.
2285 *
2286 * If the above is too much to ask, don't change the keymap.
2287 * Ask the thinkpad-acpi maintainer to do it, instead.
2288 */
edf0e0e5
HMH		 2289 static u16 ibm_keycode_map[] __initdata = {
2290 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2291 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
2292 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2293 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 2294
2295 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 2296 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2297 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2298 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147
HMH		 2299
2300 /* brightness: firmware always reacts to them, unless
2301 * X.org did some tricks in the radeon BIOS scratch
2302 * registers of *some* models */
e927c08d 2303 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 2304 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 2305
2306 /* Thinklight: firmware always react to it */
edf0e0e5 2307 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 2308
edf0e0e5
HMH		 2309 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2310 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 2311
2312 /* Volume: firmware always react to it and reprograms
2313 * the built-in *extra* mixer. Never map it to control
2314 * another mixer by default. */
e927c08d
HMH		 2315 KEY_RESERVED, /* 0x14: VOLUME UP */
2316 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2317 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2318
edf0e0e5 2319 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2320
edf0e0e5
HMH		 2321 /* (assignments unknown, please report if found) */
2322 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2323 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2324 };
2325 static u16 lenovo_keycode_map[] __initdata = {
2326 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2327 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2328 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2329 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 2330
2331 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 2332 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2333 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2334 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 2335
b5972796
HMH		 2336 /* These either have to go through ACPI video, or
2337 * act like in the IBM ThinkPads, so don't ever
2338 * enable them by default */
56a185b4 2339 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
56a185b4 2340 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147 2341
edf0e0e5 2342 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 2343
edf0e0e5
HMH		 2344 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2345 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 2346
2347 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2348 * react to it and reprograms the built-in *extra* mixer.
2349 * Never map it to control another mixer by default.
2350 *
2351 * T60?, T61, R60?, R61: firmware and EC tries to send
2352 * these over the regular keyboard, so these are no-ops,
2353 * but there are still weird bugs re. MUTE, so do not
2354 * change unless you get test reports from all Lenovo
2355 * models. May cause the BIOS to interfere with the
2356 * HDA mixer.
2357 */
e927c08d
HMH		 2358 KEY_RESERVED, /* 0x14: VOLUME UP */
2359 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2360 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2361
edf0e0e5 2362 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2363
edf0e0e5
HMH		 2364 /* (assignments unknown, please report if found) */
2365 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2366 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2367 };
2368
2369#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2370#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2371#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2372
6a38abbf 2373 int res, i;
74941a69 2374 int status;
1b6521dc 2375 int hkeyv;
b86c4722 2376
fe08bc4b
HMH		 2377 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
2378
6a38abbf 2379 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 2380 BUG_ON(tpacpi_inputdev->open != NULL ||
2381 tpacpi_inputdev->close != NULL);
6a38abbf 2382
e0c7dfe7 2383 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 2384 mutex_init(&hotkey_mutex);
5fba344c 2385
01e88f25
HMH		 2386#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2387 mutex_init(&hotkey_thread_mutex);
2388 mutex_init(&hotkey_thread_data_mutex);
2389#endif
2390
56b6aeb0 2391 /* hotkey not supported on 570 */
d8fd94d9 2392 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 2393
fe08bc4b 2394 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
d8fd94d9 2395 str_supported(tp_features.hotkey));
fe08bc4b 2396
9c0a76e1
HMH		 2397 if (!tp_features.hotkey)
2398 return 1;
a0416420 2399
d64c81c4
HMH		 2400 tpacpi_disable_brightness_delay();
2401
9c0a76e1
HMH		 2402 hotkey_dev_attributes = create_attr_set(13, NULL);
2403 if (!hotkey_dev_attributes)
2404 return -ENOMEM;
2405 res = add_many_to_attr_set(hotkey_dev_attributes,
2406 hotkey_attributes,
2407 ARRAY_SIZE(hotkey_attributes));
2408 if (res)
2409 goto err_exit;
2410
2411 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2412 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2413 for HKEY interface version 0x100 */
2414 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
2415 if ((hkeyv >> 8) != 1) {
2416 printk(TPACPI_ERR "unknown version of the "
2417 "HKEY interface: 0x%x\n", hkeyv);
2418 printk(TPACPI_ERR "please report this to %s\n",
2419 TPACPI_MAIL);
2420 } else {
2421 /*
2422 * MHKV 0x100 in A31, R40, R40e,
2423 * T4x, X31, and later
2424 */
2425 tp_features.hotkey_mask = 1;
1b6521dc 2426 }
9c0a76e1 2427 }
56b6aeb0 2428
9c0a76e1
HMH		 2429 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
2430 str_supported(tp_features.hotkey_mask));
fe08bc4b 2431
9c0a76e1
HMH		 2432 if (tp_features.hotkey_mask) {
2433 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
2434 "MHKA", "qd")) {
2435 printk(TPACPI_ERR
2436 "missing MHKA handler, "
2437 "please report this to %s\n",
2438 TPACPI_MAIL);
2439 /* FN+F12, FN+F4, FN+F3 */
2440 hotkey_all_mask = 0x080cU;
9b010de5 2441 }
9c0a76e1 2442 }
9b010de5 2443
9c0a76e1
HMH		 2444 /* hotkey_source_mask *must* be zero for
2445 * the first hotkey_mask_get */
9c0a76e1
HMH		 2446 if (tp_features.hotkey_mask) {
2447 res = hotkey_mask_get();
2448 if (res)
2449 goto err_exit;
2450
2451 hotkey_orig_mask = hotkey_mask;
2452 res = add_many_to_attr_set(
2453 hotkey_dev_attributes,
2454 hotkey_mask_attributes,
2455 ARRAY_SIZE(hotkey_mask_attributes));
2456 if (res)
2457 goto err_exit;
2458 }
74941a69 2459
01e88f25 2460#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
9c0a76e1
HMH		 2461 if (tp_features.hotkey_mask) {
2462 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
2463 & ~hotkey_all_mask;
2464 } else {
2465 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
2466 }
01e88f25 2467
9c0a76e1
HMH		 2468 vdbg_printk(TPACPI_DBG_INIT,
2469 "hotkey source mask 0x%08x, polling freq %d\n",
2470 hotkey_source_mask, hotkey_poll_freq);
01e88f25
HMH		 2471#endif
2472
a73f3091
HMH		 2473#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2474 if (dbg_wlswemul) {
2475 tp_features.hotkey_wlsw = 1;
2476 printk(TPACPI_INFO
2477 "radio switch emulation enabled\n");
2478 } else
2479#endif
9c0a76e1
HMH		 2480 /* Not all thinkpads have a hardware radio switch */
2481 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
2482 tp_features.hotkey_wlsw = 1;
2483 printk(TPACPI_INFO
2484 "radio switch found; radios are %s\n",
2485 enabled(status, 0));
3a872080
HMH		 2486 }
2487 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 2488 res = add_to_attr_set(hotkey_dev_attributes,
2489 &dev_attr_hotkey_radio_sw.attr);
74941a69 2490
9c0a76e1
HMH		 2491 /* For X41t, X60t, X61t Tablets... */
2492 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
2493 tp_features.hotkey_tablet = 1;
2494 printk(TPACPI_INFO
2495 "possible tablet mode switch found; "
2496 "ThinkPad in %s mode\n",
2497 (status & TP_HOTKEY_TABLET_MASK)?
2498 "tablet" : "laptop");
2499 res = add_to_attr_set(hotkey_dev_attributes,
2500 &dev_attr_hotkey_tablet_mode.attr);
2501 }
6c231bd5 2502
9c0a76e1
HMH		 2503 if (!res)
2504 res = register_attr_set_with_sysfs(
2505 hotkey_dev_attributes,
2506 &tpacpi_pdev->dev.kobj);
2507 if (res)
2508 goto err_exit;
6a38abbf 2509
9c0a76e1 2510 /* Set up key map */
edf0e0e5 2511
9c0a76e1
HMH		 2512 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
2513 GFP_KERNEL);
2514 if (!hotkey_keycode_map) {
2515 printk(TPACPI_ERR
2516 "failed to allocate memory for key map\n");
2517 res = -ENOMEM;
2518 goto err_exit;
2519 }
edf0e0e5 2520
9c0a76e1
HMH		 2521 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
2522 dbg_printk(TPACPI_DBG_INIT,
2523 "using Lenovo default hot key map\n");
2524 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
2525 TPACPI_HOTKEY_MAP_SIZE);
2526 } else {
2527 dbg_printk(TPACPI_DBG_INIT,
2528 "using IBM default hot key map\n");
2529 memcpy(hotkey_keycode_map, &ibm_keycode_map,
2530 TPACPI_HOTKEY_MAP_SIZE);
2531 }
edf0e0e5 2532
9c0a76e1
HMH		 2533 set_bit(EV_KEY, tpacpi_inputdev->evbit);
2534 set_bit(EV_MSC, tpacpi_inputdev->evbit);
2535 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
2536 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
2537 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
2538 tpacpi_inputdev->keycode = hotkey_keycode_map;
2539 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
2540 if (hotkey_keycode_map[i] != KEY_RESERVED) {
2541 set_bit(hotkey_keycode_map[i],
2542 tpacpi_inputdev->keybit);
2543 } else {
2544 if (i < sizeof(hotkey_reserved_mask)*8)
2545 hotkey_reserved_mask |= 1 << i;
6a38abbf 2546 }
9c0a76e1 2547 }
6a38abbf 2548
9c0a76e1
HMH		 2549 if (tp_features.hotkey_wlsw) {
2550 set_bit(EV_SW, tpacpi_inputdev->evbit);
2551 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit);
2552 }
2553 if (tp_features.hotkey_tablet) {
2554 set_bit(EV_SW, tpacpi_inputdev->evbit);
2555 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
2556 }
5c29d58f 2557
9c0a76e1
HMH		 2558 /* Do not issue duplicate brightness change events to
2559 * userspace */
2560 if (!tp_features.bright_acpimode)
2561 /* update bright_acpimode... */
2562 tpacpi_check_std_acpi_brightness_support();
b5972796 2563
9c0a76e1
HMH		 2564 if (tp_features.bright_acpimode) {
2565 printk(TPACPI_INFO
2566 "This ThinkPad has standard ACPI backlight "
2567 "brightness control, supported by the ACPI "
2568 "video driver\n");
2569 printk(TPACPI_NOTICE
2570 "Disabling thinkpad-acpi brightness events "
2571 "by default...\n");
2572
2573 /* The hotkey_reserved_mask change below is not
2574 * necessary while the keys are at KEY_RESERVED in the
2575 * default map, but better safe than sorry, leave it
2576 * here as a marker of what we have to do, especially
2577 * when we finally become able to set this at runtime
2578 * on response to X.org requests */
2579 hotkey_reserved_mask |=
2580 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
2581 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
2582 }
ff80f137 2583
9c0a76e1 2584 dbg_printk(TPACPI_DBG_INIT, "enabling hot key handling\n");
2586d566 2585 res = hotkey_status_set(true);
9c0a76e1
HMH		 2586 if (res) {
2587 hotkey_exit();
2588 return res;
2589 }
2590 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
2591 & ~hotkey_reserved_mask)
2592 | hotkey_orig_mask);
2593 if (res < 0 && res != -ENXIO) {
2594 hotkey_exit();
2595 return res;
2596 }
01e88f25 2597
9c0a76e1
HMH		 2598 dbg_printk(TPACPI_DBG_INIT,
2599 "legacy hot key reporting over procfs %s\n",
2600 (hotkey_report_mode < 2) ?
2601 "enabled" : "disabled");
01e88f25 2602
9c0a76e1
HMH		 2603 tpacpi_inputdev->open = &hotkey_inputdev_open;
2604 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 2605
9c0a76e1 2606 hotkey_poll_setup_safe(1);
733e27c1 2607 tpacpi_send_radiosw_update();
9c0a76e1 2608 tpacpi_input_send_tabletsw();
56b6aeb0 2609
9c0a76e1 2610 return 0;
01e88f25 2611
9c0a76e1
HMH		 2612err_exit:
2613 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2614 hotkey_dev_attributes = NULL;
a0416420 2615
9c0a76e1 2616 return (res < 0)? res : 1;
56b6aeb0
HMH		 2617}
2618
3827e7a3
HMH		 2619static bool hotkey_notify_hotkey(const u32 hkey,
2620 bool *send_acpi_ev,
2621 bool *ignore_acpi_ev)
2622{
2623 /* 0x1000-0x1FFF: key presses */
2624 unsigned int scancode = hkey & 0xfff;
2625 *send_acpi_ev = true;
2626 *ignore_acpi_ev = false;
2627
2628 if (scancode > 0 && scancode < 0x21) {
2629 scancode--;
2630 if (!(hotkey_source_mask & (1 << scancode))) {
2631 tpacpi_input_send_key(scancode);
2632 *send_acpi_ev = false;
2633 } else {
2634 *ignore_acpi_ev = true;
2635 }
2636 return true;
2637 }
2638 return false;
2639}
2640
2641static bool hotkey_notify_wakeup(const u32 hkey,
2642 bool *send_acpi_ev,
2643 bool *ignore_acpi_ev)
2644{
2645 /* 0x2000-0x2FFF: Wakeup reason */
2646 *send_acpi_ev = true;
2647 *ignore_acpi_ev = false;
2648
2649 switch (hkey) {
2650 case 0x2304: /* suspend, undock */
2651 case 0x2404: /* hibernation, undock */
2652 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
2653 *ignore_acpi_ev = true;
2654 break;
2655
2656 case 0x2305: /* suspend, bay eject */
2657 case 0x2405: /* hibernation, bay eject */
2658 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
2659 *ignore_acpi_ev = true;
2660 break;
2661
106b4e66
HMH		 2662 case 0x2313: /* Battery on critical low level (S3) */
2663 case 0x2413: /* Battery on critical low level (S4) */
2664 printk(TPACPI_ALERT
2665 "EMERGENCY WAKEUP: battery almost empty\n");
2666 /* how to auto-heal: */
2667 /* 2313: woke up from S3, go to S4/S5 */
2668 /* 2413: woke up from S4, go to S5 */
2669 break;
2670
3827e7a3
HMH		 2671 default:
2672 return false;
2673 }
2674
2675 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
2676 printk(TPACPI_INFO
2677 "woke up due to a hot-unplug "
2678 "request...\n");
2679 hotkey_wakeup_reason_notify_change();
2680 }
2681 return true;
2682}
2683
2684static bool hotkey_notify_usrevent(const u32 hkey,
2685 bool *send_acpi_ev,
2686 bool *ignore_acpi_ev)
2687{
2688 /* 0x5000-0x5FFF: human interface helpers */
2689 *send_acpi_ev = true;
2690 *ignore_acpi_ev = false;
2691
2692 switch (hkey) {
2693 case 0x5010: /* Lenovo new BIOS: brightness changed */
2694 case 0x500b: /* X61t: tablet pen inserted into bay */
2695 case 0x500c: /* X61t: tablet pen removed from bay */
2696 return true;
2697
2698 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2699 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2700 tpacpi_input_send_tabletsw();
2701 hotkey_tablet_mode_notify_change();
2702 *send_acpi_ev = false;
2703 return true;
2704
2705 case 0x5001:
2706 case 0x5002:
2707 /* LID switch events. Do not propagate */
2708 *ignore_acpi_ev = true;
2709 return true;
2710
2711 default:
2712 return false;
2713 }
2714}
2715
106b4e66
HMH		 2716static bool hotkey_notify_thermal(const u32 hkey,
2717 bool *send_acpi_ev,
2718 bool *ignore_acpi_ev)
2719{
2720 /* 0x6000-0x6FFF: thermal alarms */
2721 *send_acpi_ev = true;
2722 *ignore_acpi_ev = false;
2723
2724 switch (hkey) {
2725 case 0x6011:
2726 printk(TPACPI_CRIT
2727 "THERMAL ALARM: battery is too hot!\n");
2728 /* recommended action: warn user through gui */
2729 return true;
2730 case 0x6012:
2731 printk(TPACPI_ALERT
2732 "THERMAL EMERGENCY: battery is extremely hot!\n");
2733 /* recommended action: immediate sleep/hibernate */
2734 return true;
2735 case 0x6021:
2736 printk(TPACPI_CRIT
2737 "THERMAL ALARM: "
2738 "a sensor reports something is too hot!\n");
2739 /* recommended action: warn user through gui, that */
2740 /* some internal component is too hot */
2741 return true;
2742 case 0x6022:
2743 printk(TPACPI_ALERT
2744 "THERMAL EMERGENCY: "
2745 "a sensor reports something is extremely hot!\n");
2746 /* recommended action: immediate sleep/hibernate */
2747 return true;
54926ce8
HMH		 2748 case 0x6030:
2749 printk(TPACPI_INFO
2750 "EC reports that Thermal Table has changed\n");
2751 /* recommended action: do nothing, we don't have
2752 * Lenovo ATM information */
2753 return true;
106b4e66
HMH		 2754 default:
2755 printk(TPACPI_ALERT
2756 "THERMAL ALERT: unknown thermal alarm received\n");
2757 return false;
2758 }
2759}
2760
56b6aeb0
HMH		 2761static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2762{
6a38abbf 2763 u32 hkey;
3827e7a3
HMH		 2764 bool send_acpi_ev;
2765 bool ignore_acpi_ev;
2766 bool known_ev;
3eea123d
HMH		 2767
2768 if (event != 0x80) {
35ff8b9f
HMH		 2769 printk(TPACPI_ERR
2770 "unknown HKEY notification event %d\n", event);
3eea123d 2771 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 2772 acpi_bus_generate_netlink_event(
2773 ibm->acpi->device->pnp.device_class,
e0b36fc5 2774 dev_name(&ibm->acpi->device->dev),
35ff8b9f 2775 event, 0);
3eea123d
HMH		 2776 return;
2777 }
2778
2779 while (1) {
2780 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
e0c7dfe7 2781 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
3eea123d
HMH		 2782 return;
2783 }
2784
2785 if (hkey == 0) {
2786 /* queue empty */
2787 return;
2788 }
2789
3827e7a3
HMH		 2790 send_acpi_ev = true;
2791 ignore_acpi_ev = false;
56b6aeb0 2792
ff80f137
HMH		 2793 switch (hkey >> 12) {
2794 case 1:
2795 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 2796 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
2797 &ignore_acpi_ev);
ff80f137 2798 break;
a713b4d7 2799 case 2:
3827e7a3
HMH		 2800 /* 0x2000-0x2FFF: Wakeup reason */
2801 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
2802 &ignore_acpi_ev);
a713b4d7
HMH		 2803 break;
2804 case 3:
3827e7a3 2805 /* 0x3000-0x3FFF: bay-related wakeups */
a713b4d7
HMH		 2806 if (hkey == 0x3003) {
2807 hotkey_autosleep_ack = 1;
2808 printk(TPACPI_INFO
2809 "bay ejected\n");
50ebec09 2810 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 2811 known_ev = true;
a713b4d7 2812 } else {
3827e7a3 2813 known_ev = false;
a713b4d7
HMH		 2814 }
2815 break;
2816 case 4:
3827e7a3 2817 /* 0x4000-0x4FFF: dock-related wakeups */
a713b4d7
HMH		 2818 if (hkey == 0x4003) {
2819 hotkey_autosleep_ack = 1;
2820 printk(TPACPI_INFO
2821 "undocked\n");
50ebec09 2822 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 2823 known_ev = true;
a713b4d7 2824 } else {
3827e7a3 2825 known_ev = false;
a713b4d7
HMH		 2826 }
2827 break;
ff80f137 2828 case 5:
d1edb2b5 2829 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 2830 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
2831 &ignore_acpi_ev);
ff80f137 2832 break;
106b4e66
HMH		 2833 case 6:
2834 /* 0x6000-0x6FFF: thermal alarms */
2835 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
2836 &ignore_acpi_ev);
2837 break;
ff80f137
HMH		 2838 case 7:
2839 /* 0x7000-0x7FFF: misc */
2840 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
733e27c1 2841 tpacpi_send_radiosw_update();
3b64b51d 2842 send_acpi_ev = 0;
3827e7a3 2843 known_ev = true;
6a38abbf 2844 break;
6a38abbf 2845 }
ff80f137
HMH		 2846 /* fallthrough to default */
2847 default:
3827e7a3 2848 known_ev = false;
3b64b51d 2849 }
3827e7a3 2850 if (!known_ev) {
35ff8b9f
HMH		 2851 printk(TPACPI_NOTICE
2852 "unhandled HKEY event 0x%04x\n", hkey);
cb429358
HMH		 2853 printk(TPACPI_NOTICE
2854 "please report the conditions when this "
2855 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 2856 }
ff80f137 2857
3eea123d 2858 /* Legacy events */
35ff8b9f
HMH		 2859 if (!ignore_acpi_ev &&
2860 (send_acpi_ev || hotkey_report_mode < 2)) {
2861 acpi_bus_generate_proc_event(ibm->acpi->device,
2862 event, hkey);
3e5ce914 2863 }
ff80f137 2864
3eea123d 2865 /* netlink events */
3e5ce914 2866 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 2867 acpi_bus_generate_netlink_event(
2868 ibm->acpi->device->pnp.device_class,
e0b36fc5 2869 dev_name(&ibm->acpi->device->dev),
35ff8b9f 2870 event, hkey);
3eea123d 2871 }
56b6aeb0
HMH		 2872 }
2873}
2874
a713b4d7
HMH		 2875static void hotkey_suspend(pm_message_t state)
2876{
2877 /* Do these on suspend, we get the events on early resume! */
2878 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
2879 hotkey_autosleep_ack = 0;
2880}
2881
5c29d58f
HMH		 2882static void hotkey_resume(void)
2883{
d64c81c4
HMH		 2884 tpacpi_disable_brightness_delay();
2885
b2c985e7 2886 if (hotkey_mask_get())
35ff8b9f
HMH		 2887 printk(TPACPI_ERR
2888 "error while trying to read hot key mask "
2889 "from firmware\n");
733e27c1 2890 tpacpi_send_radiosw_update();
6c231bd5 2891 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 2892 hotkey_wakeup_reason_notify_change();
2893 hotkey_wakeup_hotunplug_complete_notify_change();
01e88f25 2894 hotkey_poll_setup_safe(0);
5c29d58f
HMH		 2895}
2896
a0416420 2897/* procfs -------------------------------------------------------------- */
78f81cc4 2898static int hotkey_read(char *p)
1da177e4 2899{
ae92bd17 2900 int res, status;
1da177e4
LT		 2901 int len = 0;
2902
d8fd94d9 2903 if (!tp_features.hotkey) {
78f81cc4
BD		 2904 len += sprintf(p + len, "status:\t\tnot supported\n");
2905 return len;
2906 }
2907
7646ea88 2908 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 2909 return -ERESTARTSYS;
b2c985e7
HMH		 2910 res = hotkey_status_get(&status);
2911 if (!res)
2912 res = hotkey_mask_get();
40ca9fdf 2913 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 2914 if (res)
2915 return res;
1da177e4
LT		 2916
2917 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 2918 if (tp_features.hotkey_mask) {
b2c985e7 2919 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
1da177e4
LT		 2920 len += sprintf(p + len,
2921 "commands:\tenable, disable, reset, <mask>\n");
2922 } else {
2923 len += sprintf(p + len, "mask:\t\tnot supported\n");
2924 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2925 }
2926
2927 return len;
2928}
2929
2586d566
HMH		 2930static void hotkey_enabledisable_warn(void)
2931{
2932 tpacpi_log_usertask("procfs hotkey enable/disable");
2933 WARN(1, TPACPI_WARN
2934 "hotkey enable/disable functionality has been "
2935 "removed from the driver. Hotkeys are always enabled.\n");
2936}
2937
78f81cc4 2938static int hotkey_write(char *buf)
1da177e4 2939{
2586d566 2940 int res;
ae92bd17 2941 u32 mask;
1da177e4 2942 char *cmd;
1da177e4 2943
d8fd94d9 2944 if (!tp_features.hotkey)
1da177e4
LT		 2945 return -ENODEV;
2946
7646ea88 2947 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 2948 return -ERESTARTSYS;
40ca9fdf 2949
b2c985e7 2950 mask = hotkey_mask;
78f81cc4 2951
40ca9fdf 2952 res = 0;
1da177e4
LT		 2953 while ((cmd = next_cmd(&buf))) {
2954 if (strlencmp(cmd, "enable") == 0) {
2586d566 2955 hotkey_enabledisable_warn();
1da177e4 2956 } else if (strlencmp(cmd, "disable") == 0) {
2586d566
HMH		 2957 hotkey_enabledisable_warn();
2958 res = -EPERM;
1da177e4 2959 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4 2960 mask = hotkey_orig_mask;
1da177e4
LT		 2961 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2962 /* mask set */
2963 } else if (sscanf(cmd, "%x", &mask) == 1) {
2964 /* mask set */
40ca9fdf
HMH		 2965 } else {
2966 res = -EINVAL;
2967 goto errexit;
2968 }
1da177e4 2969 }
b2c985e7
HMH		 2970 if (!res && mask != hotkey_mask)
2971 res = hotkey_mask_set(mask);
1da177e4 2972
40ca9fdf
HMH		 2973errexit:
2974 mutex_unlock(&hotkey_mutex);
2975 return res;
78f81cc4 2976}
1da177e4 2977
1ba90e3a 2978static const struct acpi_device_id ibm_htk_device_ids[] = {
e0c7dfe7 2979 {TPACPI_ACPI_HKEY_HID, 0},
1ba90e3a
TR		 2980 {"", 0},
2981};
2982
8d376cd6 2983static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 2984 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 2985 .notify = hotkey_notify,
2986 .handle = &hkey_handle,
2987 .type = ACPI_DEVICE_NOTIFY,
2988};
2989
a5763f22
HMH		 2990static struct ibm_struct hotkey_driver_data = {
2991 .name = "hotkey",
a5763f22
HMH		 2992 .read = hotkey_read,
2993 .write = hotkey_write,
2994 .exit = hotkey_exit,
5c29d58f 2995 .resume = hotkey_resume,
a713b4d7 2996 .suspend = hotkey_suspend,
8d376cd6 2997 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 2998};
2999
56b6aeb0
HMH		 3000/*************************************************************************
3001 * Bluetooth subdriver
3002 */
1da177e4 3003
f74a27d4
HMH		 3004enum {
3005 /* ACPI GBDC/SBDC bits */
3006 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3007 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220
HMH		 3008 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
3009 off / last state */
3010};
3011
3012enum {
3013 /* ACPI \BLTH commands */
3014 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3015 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3016 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3017 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3018 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 3019};
3020
0e74dc26
HMH		 3021static struct rfkill *tpacpi_bluetooth_rfkill;
3022
153f8220
HMH		 3023static void bluetooth_suspend(pm_message_t state)
3024{
3025 /* Try to make sure radio will resume powered off */
3026 acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3027 TP_ACPI_BLTH_PWR_OFF_ON_RESUME);
3028}
3029
07431ec8
HMH		 3030static int bluetooth_get_radiosw(void)
3031{
3032 int status;
3033
3034 if (!tp_features.bluetooth)
3035 return -ENODEV;
3036
133ec3bd
HMH		 3037 /* WLSW overrides bluetooth in firmware/hardware, reflect that */
3038 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
0e74dc26 3039 return RFKILL_STATE_HARD_BLOCKED;
133ec3bd 3040
a73f3091
HMH		 3041#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3042 if (dbg_bluetoothemul)
3043 return (tpacpi_bluetooth_emulstate) ?
3044 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3045#endif
3046
07431ec8
HMH		 3047 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3048 return -EIO;
3049
0e74dc26
HMH		 3050 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
3051 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
07431ec8
HMH		 3052}
3053
0e74dc26
HMH		 3054static void bluetooth_update_rfk(void)
3055{
3056 int status;
3057
3058 if (!tpacpi_bluetooth_rfkill)
3059 return;
3060
3061 status = bluetooth_get_radiosw();
3062 if (status < 0)
3063 return;
3064 rfkill_force_state(tpacpi_bluetooth_rfkill, status);
3065}
3066
3067static int bluetooth_set_radiosw(int radio_on, int update_rfk)
07431ec8
HMH		 3068{
3069 int status;
3070
3071 if (!tp_features.bluetooth)
3072 return -ENODEV;
3073
133ec3bd
HMH		 3074 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3075 * reason to risk weird behaviour. */
3076 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3077 && radio_on)
3078 return -EPERM;
3079
a73f3091
HMH		 3080#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3081 if (dbg_bluetoothemul) {
3082 tpacpi_bluetooth_emulstate = !!radio_on;
3083 if (update_rfk)
3084 bluetooth_update_rfk();
3085 return 0;
3086 }
3087#endif
3088
153f8220 3089 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
07431ec8 3090 if (radio_on)
153f8220 3091 status = TP_ACPI_BLUETOOTH_RADIOSSW;
07431ec8 3092 else
153f8220 3093 status = 0;
07431ec8
HMH		 3094 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3095 return -EIO;
3096
0e74dc26
HMH		 3097 if (update_rfk)
3098 bluetooth_update_rfk();
3099
07431ec8
HMH		 3100 return 0;
3101}
f74a27d4 3102
d3a6ade4
HMH		 3103/* sysfs bluetooth enable ---------------------------------------------- */
3104static ssize_t bluetooth_enable_show(struct device *dev,
3105 struct device_attribute *attr,
3106 char *buf)
3107{
3108 int status;
3109
73a94d86
HMH		 3110 printk_deprecated_rfkill_attribute("bluetooth_enable");
3111
d3a6ade4
HMH		 3112 status = bluetooth_get_radiosw();
3113 if (status < 0)
3114 return status;
3115
0e74dc26
HMH		 3116 return snprintf(buf, PAGE_SIZE, "%d\n",
3117 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
d3a6ade4
HMH		 3118}
3119
3120static ssize_t bluetooth_enable_store(struct device *dev,
3121 struct device_attribute *attr,
3122 const char *buf, size_t count)
3123{
3124 unsigned long t;
3125 int res;
3126
73a94d86
HMH		 3127 printk_deprecated_rfkill_attribute("bluetooth_enable");
3128
d3a6ade4
HMH		 3129 if (parse_strtoul(buf, 1, &t))
3130 return -EINVAL;
3131
0e74dc26 3132 res = bluetooth_set_radiosw(t, 1);
d3a6ade4
HMH		 3133
3134 return (res) ? res : count;
3135}
3136
3137static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 3138 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3139 bluetooth_enable_show, bluetooth_enable_store);
3140
3141/* --------------------------------------------------------------------- */
3142
3143static struct attribute *bluetooth_attributes[] = {
3144 &dev_attr_bluetooth_enable.attr,
3145 NULL
3146};
3147
3148static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 3149 .attrs = bluetooth_attributes,
3150};
3151
0e74dc26
HMH		 3152static int tpacpi_bluetooth_rfk_get(void *data, enum rfkill_state *state)
3153{
3154 int bts = bluetooth_get_radiosw();
3155
3156 if (bts < 0)
3157 return bts;
3158
3159 *state = bts;
3160 return 0;
3161}
3162
3163static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
3164{
3165 return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3166}
3167
90d9d3c7
HMH		 3168static void bluetooth_shutdown(void)
3169{
3170 /* Order firmware to save current state to NVRAM */
3171 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3172 TP_ACPI_BLTH_SAVE_STATE))
3173 printk(TPACPI_NOTICE
3174 "failed to save bluetooth state to NVRAM\n");
3175}
3176
07431ec8
HMH		 3177static void bluetooth_exit(void)
3178{
90d9d3c7
HMH		 3179 bluetooth_shutdown();
3180
0e74dc26
HMH		 3181 if (tpacpi_bluetooth_rfkill)
3182 rfkill_unregister(tpacpi_bluetooth_rfkill);
3183
07431ec8
HMH		 3184 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3185 &bluetooth_attr_group);
3186}
3187
a5763f22 3188static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 3189{
d3a6ade4 3190 int res;
d6fdd1e9
HMH		 3191 int status = 0;
3192
fe08bc4b
HMH		 3193 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
3194
e0c7dfe7 3195 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3196
78f81cc4
BD		 3197 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3198 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 3199 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 3200 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
3201
3202 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
3203 str_supported(tp_features.bluetooth),
3204 status);
3205
a73f3091
HMH		 3206#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3207 if (dbg_bluetoothemul) {
3208 tp_features.bluetooth = 1;
3209 printk(TPACPI_INFO
3210 "bluetooth switch emulation enabled\n");
3211 } else
3212#endif
3a872080
HMH		 3213 if (tp_features.bluetooth &&
3214 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
3215 /* no bluetooth hardware present in system */
3216 tp_features.bluetooth = 0;
3217 dbg_printk(TPACPI_DBG_INIT,
3218 "bluetooth hardware not installed\n");
3219 }
3220
0e74dc26
HMH		 3221 if (!tp_features.bluetooth)
3222 return 1;
3223
3224 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3a872080 3225 &bluetooth_attr_group);
0e74dc26
HMH		 3226 if (res)
3227 return res;
3228
3229 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
3230 &tpacpi_bluetooth_rfkill,
3231 RFKILL_TYPE_BLUETOOTH,
3232 "tpacpi_bluetooth_sw",
0045c0aa 3233 true,
0e74dc26
HMH		 3234 tpacpi_bluetooth_rfk_set,
3235 tpacpi_bluetooth_rfk_get);
3236 if (res) {
3237 bluetooth_exit();
3238 return res;
d6fdd1e9 3239 }
fe08bc4b 3240
0e74dc26 3241 return 0;
1da177e4
LT		 3242}
3243
d3a6ade4 3244/* procfs -------------------------------------------------------------- */
78f81cc4 3245static int bluetooth_read(char *p)
1da177e4
LT		 3246{
3247 int len = 0;
d6fdd1e9 3248 int status = bluetooth_get_radiosw();
1da177e4 3249
d8fd94d9 3250 if (!tp_features.bluetooth)
1da177e4 3251 len += sprintf(p + len, "status:\t\tnot supported\n");
1da177e4 3252 else {
d6fdd1e9 3253 len += sprintf(p + len, "status:\t\t%s\n",
0e74dc26
HMH		 3254 (status == RFKILL_STATE_UNBLOCKED) ?
3255 "enabled" : "disabled");
1da177e4
LT		 3256 len += sprintf(p + len, "commands:\tenable, disable\n");
3257 }
3258
3259 return len;
3260}
3261
78f81cc4 3262static int bluetooth_write(char *buf)
1da177e4 3263{
1da177e4 3264 char *cmd;
1da177e4 3265
d8fd94d9 3266 if (!tp_features.bluetooth)
78f81cc4 3267 return -ENODEV;
1da177e4
LT		 3268
3269 while ((cmd = next_cmd(&buf))) {
3270 if (strlencmp(cmd, "enable") == 0) {
0e74dc26 3271 bluetooth_set_radiosw(1, 1);
1da177e4 3272 } else if (strlencmp(cmd, "disable") == 0) {
0e74dc26 3273 bluetooth_set_radiosw(0, 1);
1da177e4
LT		 3274 } else
3275 return -EINVAL;
1da177e4
LT		 3276 }
3277
1da177e4
LT		 3278 return 0;
3279}
3280
a5763f22
HMH		 3281static struct ibm_struct bluetooth_driver_data = {
3282 .name = "bluetooth",
3283 .read = bluetooth_read,
3284 .write = bluetooth_write,
d3a6ade4 3285 .exit = bluetooth_exit,
153f8220 3286 .suspend = bluetooth_suspend,
90d9d3c7 3287 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 3288};
3289
56b6aeb0
HMH		 3290/*************************************************************************
3291 * Wan subdriver
3292 */
3293
f74a27d4
HMH		 3294enum {
3295 /* ACPI GWAN/SWAN bits */
3296 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
3297 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220
HMH		 3298 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
3299 off / last state */
f74a27d4
HMH		 3300};
3301
0e74dc26
HMH		 3302static struct rfkill *tpacpi_wan_rfkill;
3303
153f8220
HMH		 3304static void wan_suspend(pm_message_t state)
3305{
3306 /* Try to make sure radio will resume powered off */
3307 acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
3308 TP_ACPI_WGSV_PWR_OFF_ON_RESUME);
3309}
3310
07431ec8
HMH		 3311static int wan_get_radiosw(void)
3312{
3313 int status;
3314
3315 if (!tp_features.wan)
3316 return -ENODEV;
3317
133ec3bd
HMH		 3318 /* WLSW overrides WWAN in firmware/hardware, reflect that */
3319 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
0e74dc26 3320 return RFKILL_STATE_HARD_BLOCKED;
133ec3bd 3321
a73f3091
HMH		 3322#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3323 if (dbg_wwanemul)
3324 return (tpacpi_wwan_emulstate) ?
3325 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3326#endif
3327
07431ec8
HMH		 3328 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
3329 return -EIO;
3330
0e74dc26
HMH		 3331 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
3332 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
07431ec8
HMH		 3333}
3334
0e74dc26
HMH		 3335static void wan_update_rfk(void)
3336{
3337 int status;
3338
3339 if (!tpacpi_wan_rfkill)
3340 return;
3341
3342 status = wan_get_radiosw();
3343 if (status < 0)
3344 return;
3345 rfkill_force_state(tpacpi_wan_rfkill, status);
3346}
3347
3348static int wan_set_radiosw(int radio_on, int update_rfk)
07431ec8
HMH		 3349{
3350 int status;
3351
3352 if (!tp_features.wan)
3353 return -ENODEV;
3354
133ec3bd
HMH		 3355 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3356 * reason to risk weird behaviour. */
3357 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3358 && radio_on)
3359 return -EPERM;
3360
a73f3091
HMH		 3361#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3362 if (dbg_wwanemul) {
3363 tpacpi_wwan_emulstate = !!radio_on;
3364 if (update_rfk)
3365 wan_update_rfk();
3366 return 0;
3367 }
3368#endif
3369
153f8220 3370 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
07431ec8 3371 if (radio_on)
153f8220 3372 status = TP_ACPI_WANCARD_RADIOSSW;
07431ec8 3373 else
153f8220 3374 status = 0;
07431ec8
HMH		 3375 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
3376 return -EIO;
3377
0e74dc26
HMH		 3378 if (update_rfk)
3379 wan_update_rfk();
3380
07431ec8
HMH		 3381 return 0;
3382}
f74a27d4 3383
d3a6ade4
HMH		 3384/* sysfs wan enable ---------------------------------------------------- */
3385static ssize_t wan_enable_show(struct device *dev,
3386 struct device_attribute *attr,
3387 char *buf)
3388{
3389 int status;
3390
73a94d86
HMH		 3391 printk_deprecated_rfkill_attribute("wwan_enable");
3392
d3a6ade4
HMH		 3393 status = wan_get_radiosw();
3394 if (status < 0)
3395 return status;
3396
0e74dc26
HMH		 3397 return snprintf(buf, PAGE_SIZE, "%d\n",
3398 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
d3a6ade4
HMH		 3399}
3400
3401static ssize_t wan_enable_store(struct device *dev,
3402 struct device_attribute *attr,
3403 const char *buf, size_t count)
3404{
3405 unsigned long t;
3406 int res;
3407
73a94d86
HMH		 3408 printk_deprecated_rfkill_attribute("wwan_enable");
3409
d3a6ade4
HMH		 3410 if (parse_strtoul(buf, 1, &t))
3411 return -EINVAL;
3412
0e74dc26 3413 res = wan_set_radiosw(t, 1);
d3a6ade4
HMH		 3414
3415 return (res) ? res : count;
3416}
3417
3418static struct device_attribute dev_attr_wan_enable =
cc4c24e1 3419 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3420 wan_enable_show, wan_enable_store);
3421
3422/* --------------------------------------------------------------------- */
3423
3424static struct attribute *wan_attributes[] = {
3425 &dev_attr_wan_enable.attr,
3426 NULL
3427};
3428
3429static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 3430 .attrs = wan_attributes,
3431};
3432
0e74dc26
HMH		 3433static int tpacpi_wan_rfk_get(void *data, enum rfkill_state *state)
3434{
3435 int wans = wan_get_radiosw();
3436
3437 if (wans < 0)
3438 return wans;
3439
3440 *state = wans;
3441 return 0;
3442}
3443
3444static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
3445{
3446 return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3447}
3448
90d9d3c7
HMH		 3449static void wan_shutdown(void)
3450{
3451 /* Order firmware to save current state to NVRAM */
3452 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
3453 TP_ACPI_WGSV_SAVE_STATE))
3454 printk(TPACPI_NOTICE
3455 "failed to save WWAN state to NVRAM\n");
3456}
3457
07431ec8
HMH		 3458static void wan_exit(void)
3459{
90d9d3c7
HMH		 3460 wan_shutdown();
3461
0e74dc26
HMH		 3462 if (tpacpi_wan_rfkill)
3463 rfkill_unregister(tpacpi_wan_rfkill);
3464
07431ec8
HMH		 3465 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3466 &wan_attr_group);
3467}
3468
a5763f22 3469static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 3470{
d3a6ade4 3471 int res;
d6fdd1e9
HMH		 3472 int status = 0;
3473
fe08bc4b
HMH		 3474 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
3475
e0c7dfe7 3476 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3477
d8fd94d9 3478 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 3479 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
3480
3481 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
3482 str_supported(tp_features.wan),
3483 status);
3484
a73f3091
HMH		 3485#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3486 if (dbg_wwanemul) {
3487 tp_features.wan = 1;
3488 printk(TPACPI_INFO
3489 "wwan switch emulation enabled\n");
3490 } else
3491#endif
3a872080
HMH		 3492 if (tp_features.wan &&
3493 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
3494 /* no wan hardware present in system */
3495 tp_features.wan = 0;
3496 dbg_printk(TPACPI_DBG_INIT,
3497 "wan hardware not installed\n");
3498 }
3499
0e74dc26
HMH		 3500 if (!tp_features.wan)
3501 return 1;
3502
3503 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3a872080 3504 &wan_attr_group);
0e74dc26
HMH		 3505 if (res)
3506 return res;
3507
3508 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
3509 &tpacpi_wan_rfkill,
3510 RFKILL_TYPE_WWAN,
3511 "tpacpi_wwan_sw",
0045c0aa 3512 true,
0e74dc26
HMH		 3513 tpacpi_wan_rfk_set,
3514 tpacpi_wan_rfk_get);
3515 if (res) {
3516 wan_exit();
3517 return res;
d6fdd1e9 3518 }
fe08bc4b 3519
0e74dc26 3520 return 0;
42adb53c
JF		 3521}
3522
d3a6ade4 3523/* procfs -------------------------------------------------------------- */
42adb53c
JF		 3524static int wan_read(char *p)
3525{
3526 int len = 0;
d6fdd1e9 3527 int status = wan_get_radiosw();
42adb53c 3528
d8fd94d9 3529 if (!tp_features.wan)
42adb53c 3530 len += sprintf(p + len, "status:\t\tnot supported\n");
42adb53c 3531 else {
d6fdd1e9 3532 len += sprintf(p + len, "status:\t\t%s\n",
0e74dc26
HMH		 3533 (status == RFKILL_STATE_UNBLOCKED) ?
3534 "enabled" : "disabled");
42adb53c
JF		 3535 len += sprintf(p + len, "commands:\tenable, disable\n");
3536 }
3537
3538 return len;
3539}
3540
3541static int wan_write(char *buf)
3542{
42adb53c 3543 char *cmd;
42adb53c 3544
d8fd94d9 3545 if (!tp_features.wan)
42adb53c
JF		 3546 return -ENODEV;
3547
3548 while ((cmd = next_cmd(&buf))) {
3549 if (strlencmp(cmd, "enable") == 0) {
0e74dc26 3550 wan_set_radiosw(1, 1);
42adb53c 3551 } else if (strlencmp(cmd, "disable") == 0) {
0e74dc26 3552 wan_set_radiosw(0, 1);
42adb53c
JF		 3553 } else
3554 return -EINVAL;
42adb53c
JF		 3555 }
3556
42adb53c
JF		 3557 return 0;
3558}
3559
a5763f22
HMH		 3560static struct ibm_struct wan_driver_data = {
3561 .name = "wan",
3562 .read = wan_read,
3563 .write = wan_write,
d3a6ade4 3564 .exit = wan_exit,
153f8220 3565 .suspend = wan_suspend,
90d9d3c7 3566 .shutdown = wan_shutdown,
a5763f22
HMH		 3567};
3568
0045c0aa
HMH		 3569/*************************************************************************
3570 * UWB subdriver
3571 */
3572
3573enum {
3574 /* ACPI GUWB/SUWB bits */
3575 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
3576 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
3577};
3578
3579static struct rfkill *tpacpi_uwb_rfkill;
3580
3581static int uwb_get_radiosw(void)
3582{
3583 int status;
3584
3585 if (!tp_features.uwb)
3586 return -ENODEV;
3587
3588 /* WLSW overrides UWB in firmware/hardware, reflect that */
3589 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3590 return RFKILL_STATE_HARD_BLOCKED;
3591
3592#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3593 if (dbg_uwbemul)
3594 return (tpacpi_uwb_emulstate) ?
3595 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3596#endif
3597
3598 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
3599 return -EIO;
3600
3601 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
3602 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3603}
3604
3605static void uwb_update_rfk(void)
3606{
3607 int status;
3608
3609 if (!tpacpi_uwb_rfkill)
3610 return;
3611
3612 status = uwb_get_radiosw();
3613 if (status < 0)
3614 return;
3615 rfkill_force_state(tpacpi_uwb_rfkill, status);
3616}
3617
3618static int uwb_set_radiosw(int radio_on, int update_rfk)
3619{
3620 int status;
3621
3622 if (!tp_features.uwb)
3623 return -ENODEV;
3624
3625 /* WLSW overrides UWB in firmware/hardware, but there is no
3626 * reason to risk weird behaviour. */
3627 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3628 && radio_on)
3629 return -EPERM;
3630
3631#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3632 if (dbg_uwbemul) {
3633 tpacpi_uwb_emulstate = !!radio_on;
3634 if (update_rfk)
3635 uwb_update_rfk();
3636 return 0;
3637 }
3638#endif
3639
3640 status = (radio_on) ? TP_ACPI_UWB_RADIOSSW : 0;
3641 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
3642 return -EIO;
3643
3644 if (update_rfk)
3645 uwb_update_rfk();
3646
3647 return 0;
3648}
3649
3650/* --------------------------------------------------------------------- */
3651
3652static int tpacpi_uwb_rfk_get(void *data, enum rfkill_state *state)
3653{
3654 int uwbs = uwb_get_radiosw();
3655
3656 if (uwbs < 0)
3657 return uwbs;
3658
3659 *state = uwbs;
3660 return 0;
3661}
3662
3663static int tpacpi_uwb_rfk_set(void *data, enum rfkill_state state)
3664{
3665 return uwb_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3666}
3667
3668static void uwb_exit(void)
3669{
3670 if (tpacpi_uwb_rfkill)
3671 rfkill_unregister(tpacpi_uwb_rfkill);
3672}
3673
3674static int __init uwb_init(struct ibm_init_struct *iibm)
3675{
3676 int res;
3677 int status = 0;
3678
3679 vdbg_printk(TPACPI_DBG_INIT, "initializing uwb subdriver\n");
3680
3681 TPACPI_ACPIHANDLE_INIT(hkey);
3682
3683 tp_features.uwb = hkey_handle &&
3684 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
3685
3686 vdbg_printk(TPACPI_DBG_INIT, "uwb is %s, status 0x%02x\n",
3687 str_supported(tp_features.uwb),
3688 status);
3689
3690#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3691 if (dbg_uwbemul) {
3692 tp_features.uwb = 1;
3693 printk(TPACPI_INFO
3694 "uwb switch emulation enabled\n");
3695 } else
3696#endif
3697 if (tp_features.uwb &&
3698 !(status & TP_ACPI_UWB_HWPRESENT)) {
3699 /* no uwb hardware present in system */
3700 tp_features.uwb = 0;
3701 dbg_printk(TPACPI_DBG_INIT,
3702 "uwb hardware not installed\n");
3703 }
3704
3705 if (!tp_features.uwb)
3706 return 1;
3707
3708 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
3709 &tpacpi_uwb_rfkill,
3710 RFKILL_TYPE_UWB,
3711 "tpacpi_uwb_sw",
3712 false,
3713 tpacpi_uwb_rfk_set,
3714 tpacpi_uwb_rfk_get);
3715
3716 return res;
3717}
3718
3719static struct ibm_struct uwb_driver_data = {
3720 .name = "uwb",
3721 .exit = uwb_exit,
3722 .flags.experimental = 1,
3723};
3724
56b6aeb0
HMH		 3725/*************************************************************************
3726 * Video subdriver
3727 */
3728
d7c1d17d
HMH		 3729#ifdef CONFIG_THINKPAD_ACPI_VIDEO
3730
f74a27d4
HMH		 3731enum video_access_mode {
3732 TPACPI_VIDEO_NONE = 0,
3733 TPACPI_VIDEO_570, /* 570 */
3734 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
3735 TPACPI_VIDEO_NEW, /* all others */
3736};
3737
3738enum { /* video status flags, based on VIDEO_570 */
3739 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
3740 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
3741 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
3742};
3743
3744enum { /* TPACPI_VIDEO_570 constants */
3745 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
3746 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
3747 * video_status_flags */
3748 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
3749 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
3750};
3751
9a8e1738
HMH		 3752static enum video_access_mode video_supported;
3753static int video_orig_autosw;
78f81cc4 3754
f74a27d4
HMH		 3755static int video_autosw_get(void);
3756static int video_autosw_set(int enable);
3757
e0c7dfe7 3758TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 3759
a5763f22 3760static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 3761{
78f81cc4
BD		 3762 int ivga;
3763
fe08bc4b
HMH		 3764 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
3765
e0c7dfe7
HMH		 3766 TPACPI_ACPIHANDLE_INIT(vid);
3767 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 3768
78f81cc4
BD		 3769 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
3770 /* G41, assume IVGA doesn't change */
3771 vid_handle = vid2_handle;
3772
3773 if (!vid_handle)
3774 /* video switching not supported on R30, R31 */
efa27145 3775 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 3776 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
3777 /* 570 */
efa27145 3778 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 3779 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
3780 /* 600e/x, 770e, 770x */
efa27145 3781 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 3782 else
3783 /* all others */
efa27145 3784 video_supported = TPACPI_VIDEO_NEW;
1da177e4 3785
fe08bc4b
HMH		 3786 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
3787 str_supported(video_supported != TPACPI_VIDEO_NONE),
3788 video_supported);
3789
5fba344c 3790 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 3791}
3792
56b6aeb0
HMH		 3793static void video_exit(void)
3794{
83f34724
HMH		 3795 dbg_printk(TPACPI_DBG_EXIT,
3796 "restoring original video autoswitch mode\n");
3797 if (video_autosw_set(video_orig_autosw))
e0c7dfe7 3798 printk(TPACPI_ERR "error while trying to restore original "
83f34724 3799 "video autoswitch mode\n");
56b6aeb0
HMH		 3800}
3801
83f34724 3802static int video_outputsw_get(void)
1da177e4
LT		 3803{
3804 int status = 0;
3805 int i;
3806
83f34724
HMH		 3807 switch (video_supported) {
3808 case TPACPI_VIDEO_570:
3809 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
3810 TP_ACPI_VIDEO_570_PHSCMD))
3811 return -EIO;
3812 status = i & TP_ACPI_VIDEO_570_PHSMASK;
3813 break;
3814 case TPACPI_VIDEO_770:
3815 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
3816 return -EIO;
3817 if (i)
3818 status |= TP_ACPI_VIDEO_S_LCD;
3819 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
3820 return -EIO;
3821 if (i)
3822 status |= TP_ACPI_VIDEO_S_CRT;
3823 break;
3824 case TPACPI_VIDEO_NEW:
3825 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
3826 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
3827 return -EIO;
3828 if (i)
3829 status |= TP_ACPI_VIDEO_S_CRT;
3830
3831 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
3832 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
3833 return -EIO;
3834 if (i)
3835 status |= TP_ACPI_VIDEO_S_LCD;
3836 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
3837 return -EIO;
3838 if (i)
3839 status |= TP_ACPI_VIDEO_S_DVI;
3840 break;
3841 default:
3842 return -ENOSYS;
78f81cc4
BD		 3843 }
3844
3845 return status;
3846}
1da177e4 3847
83f34724 3848static int video_outputsw_set(int status)
78f81cc4 3849{
83f34724
HMH		 3850 int autosw;
3851 int res = 0;
3852
3853 switch (video_supported) {
3854 case TPACPI_VIDEO_570:
3855 res = acpi_evalf(NULL, NULL,
3856 "\\_SB.PHS2", "vdd",
3857 TP_ACPI_VIDEO_570_PHS2CMD,
3858 status | TP_ACPI_VIDEO_570_PHS2SET);
3859 break;
3860 case TPACPI_VIDEO_770:
3861 autosw = video_autosw_get();
3862 if (autosw < 0)
3863 return autosw;
1da177e4 3864
83f34724
HMH		 3865 res = video_autosw_set(1);
3866 if (res)
3867 return res;
3868 res = acpi_evalf(vid_handle, NULL,
3869 "ASWT", "vdd", status * 0x100, 0);
3870 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 3871 printk(TPACPI_ERR
3872 "video auto-switch left enabled due to error\n");
83f34724
HMH		 3873 return -EIO;
3874 }
3875 break;
3876 case TPACPI_VIDEO_NEW:
3877 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 3878 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 3879 break;
3880 default:
3881 return -ENOSYS;
3882 }
1da177e4 3883
83f34724 3884 return (res)? 0 : -EIO;
1da177e4
LT		 3885}
3886
83f34724 3887static int video_autosw_get(void)
78f81cc4 3888{
83f34724 3889 int autosw = 0;
78f81cc4 3890
83f34724
HMH		 3891 switch (video_supported) {
3892 case TPACPI_VIDEO_570:
3893 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
3894 return -EIO;
3895 break;
3896 case TPACPI_VIDEO_770:
3897 case TPACPI_VIDEO_NEW:
3898 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
3899 return -EIO;
3900 break;
3901 default:
3902 return -ENOSYS;
3903 }
78f81cc4 3904
83f34724 3905 return autosw & 1;
78f81cc4
BD		 3906}
3907
83f34724 3908static int video_autosw_set(int enable)
78f81cc4 3909{
83f34724
HMH		 3910 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
3911 return -EIO;
3912 return 0;
78f81cc4
BD		 3913}
3914
83f34724 3915static int video_outputsw_cycle(void)
78f81cc4 3916{
83f34724
HMH		 3917 int autosw = video_autosw_get();
3918 int res;
78f81cc4 3919
83f34724
HMH		 3920 if (autosw < 0)
3921 return autosw;
78f81cc4 3922
83f34724
HMH		 3923 switch (video_supported) {
3924 case TPACPI_VIDEO_570:
3925 res = video_autosw_set(1);
3926 if (res)
3927 return res;
3928 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
3929 break;
3930 case TPACPI_VIDEO_770:
3931 case TPACPI_VIDEO_NEW:
3932 res = video_autosw_set(1);
3933 if (res)
3934 return res;
3935 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
3936 break;
3937 default:
3938 return -ENOSYS;
3939 }
3940 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 3941 printk(TPACPI_ERR
3942 "video auto-switch left enabled due to error\n");
83f34724 3943 return -EIO;
78f81cc4
BD		 3944 }
3945
83f34724
HMH		 3946 return (res)? 0 : -EIO;
3947}
3948
3949static int video_expand_toggle(void)
3950{
3951 switch (video_supported) {
3952 case TPACPI_VIDEO_570:
3953 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
3954 0 : -EIO;
3955 case TPACPI_VIDEO_770:
3956 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
3957 0 : -EIO;
3958 case TPACPI_VIDEO_NEW:
3959 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
3960 0 : -EIO;
3961 default:
3962 return -ENOSYS;
3963 }
3964 /* not reached */
78f81cc4
BD		 3965}
3966
56b6aeb0
HMH		 3967static int video_read(char *p)
3968{
83f34724 3969 int status, autosw;
56b6aeb0
HMH		 3970 int len = 0;
3971
83f34724 3972 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 3973 len += sprintf(p + len, "status:\t\tnot supported\n");
3974 return len;
3975 }
3976
83f34724
HMH		 3977 status = video_outputsw_get();
3978 if (status < 0)
3979 return status;
3980
3981 autosw = video_autosw_get();
3982 if (autosw < 0)
3983 return autosw;
3984
56b6aeb0
HMH		 3985 len += sprintf(p + len, "status:\t\tsupported\n");
3986 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
3987 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 3988 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 3989 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
3990 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
3991 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
3992 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 3993 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 3994 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
3995 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
3996 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
3997
3998 return len;
3999}
4000
78f81cc4 4001static int video_write(char *buf)
1da177e4
LT		 4002{
4003 char *cmd;
4004 int enable, disable, status;
83f34724 4005 int res;
1da177e4 4006
83f34724 4007 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4008 return -ENODEV;
4009
83f34724
HMH		 4010 enable = 0;
4011 disable = 0;
1da177e4
LT		 4012
4013 while ((cmd = next_cmd(&buf))) {
4014 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4015 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4016 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4017 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4018 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4019 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4020 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4021 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4022 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4023 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4024 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4025 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4026 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4027 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4028 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4029 res = video_autosw_set(1);
4030 if (res)
4031 return res;
1da177e4 4032 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4033 res = video_autosw_set(0);
4034 if (res)
4035 return res;
1da177e4 4036 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4037 res = video_outputsw_cycle();
4038 if (res)
4039 return res;
1da177e4 4040 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4041 res = video_expand_toggle();
4042 if (res)
4043 return res;
1da177e4
LT		 4044 } else
4045 return -EINVAL;
4046 }
4047
4048 if (enable || disable) {
83f34724
HMH		 4049 status = video_outputsw_get();
4050 if (status < 0)
4051 return status;
4052 res = video_outputsw_set((status & ~disable) | enable);
4053 if (res)
4054 return res;
1da177e4
LT		 4055 }
4056
4057 return 0;
4058}
4059
a5763f22
HMH		 4060static struct ibm_struct video_driver_data = {
4061 .name = "video",
4062 .read = video_read,
4063 .write = video_write,
4064 .exit = video_exit,
4065};
4066
d7c1d17d
HMH		 4067#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4068
56b6aeb0
HMH		 4069/*************************************************************************
4070 * Light (thinklight) subdriver
4071 */
1da177e4 4072
e0c7dfe7
HMH		 4073TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4074TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4075
4fa6811b
HMH		 4076static int light_get_status(void)
4077{
4078 int status = 0;
4079
4080 if (tp_features.light_status) {
4081 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4082 return -EIO;
4083 return (!!status);
4084 }
4085
4086 return -ENXIO;
4087}
4088
4089static int light_set_status(int status)
4090{
4091 int rc;
4092
4093 if (tp_features.light) {
4094 if (cmos_handle) {
4095 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4096 (status)?
4097 TP_CMOS_THINKLIGHT_ON :
4098 TP_CMOS_THINKLIGHT_OFF);
4099 } else {
4100 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4101 (status)? 1 : 0);
4102 }
4103 return (rc)? 0 : -EIO;
4104 }
4105
4106 return -ENXIO;
4107}
4108
e306501d
HMH		 4109static void light_set_status_worker(struct work_struct *work)
4110{
4111 struct tpacpi_led_classdev *data =
4112 container_of(work, struct tpacpi_led_classdev, work);
4113
4114 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4115 light_set_status((data->new_brightness != LED_OFF));
4116}
4117
4118static void light_sysfs_set(struct led_classdev *led_cdev,
4119 enum led_brightness brightness)
4120{
4121 struct tpacpi_led_classdev *data =
4122 container_of(led_cdev,
4123 struct tpacpi_led_classdev,
4124 led_classdev);
4125 data->new_brightness = brightness;
e0e3c061 4126 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4127}
4128
4129static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4130{
4131 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4132}
4133
4134static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4135 .led_classdev = {
4136 .name = "tpacpi::thinklight",
4137 .brightness_set = &light_sysfs_set,
4138 .brightness_get = &light_sysfs_get,
4139 }
4140};
4141
a5763f22 4142static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4143{
9c0a76e1 4144 int rc;
e306501d 4145
fe08bc4b
HMH		 4146 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4147
e0c7dfe7
HMH		 4148 TPACPI_ACPIHANDLE_INIT(ledb);
4149 TPACPI_ACPIHANDLE_INIT(lght);
4150 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4151 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4152
78f81cc4 4153 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4154 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4155
d8fd94d9 4156 if (tp_features.light)
78f81cc4
BD		 4157 /* light status not supported on
4158 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4159 tp_features.light_status =
4160 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4161
9c0a76e1
HMH		 4162 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4163 str_supported(tp_features.light),
4164 str_supported(tp_features.light_status));
fe08bc4b 4165
9c0a76e1
HMH		 4166 if (!tp_features.light)
4167 return 1;
4168
4169 rc = led_classdev_register(&tpacpi_pdev->dev,
4170 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4171
4172 if (rc < 0) {
4173 tp_features.light = 0;
4174 tp_features.light_status = 0;
9c0a76e1
HMH		 4175 } else {
4176 rc = 0;
e306501d 4177 }
9c0a76e1 4178
e306501d
HMH		 4179 return rc;
4180}
4181
4182static void light_exit(void)
4183{
4184 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4185 if (work_pending(&tpacpi_led_thinklight.work))
e0e3c061 4186 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4187}
4188
78f81cc4 4189static int light_read(char *p)
1da177e4
LT		 4190{
4191 int len = 0;
4fa6811b 4192 int status;
1da177e4 4193
d8fd94d9 4194 if (!tp_features.light) {
78f81cc4 4195 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 4196 } else if (!tp_features.light_status) {
78f81cc4
BD		 4197 len += sprintf(p + len, "status:\t\tunknown\n");
4198 len += sprintf(p + len, "commands:\ton, off\n");
4199 } else {
4fa6811b
HMH		 4200 status = light_get_status();
4201 if (status < 0)
4202 return status;
1da177e4 4203 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 4204 len += sprintf(p + len, "commands:\ton, off\n");
4205 }
1da177e4
LT		 4206
4207 return len;
4208}
4209
78f81cc4 4210static int light_write(char *buf)
1da177e4 4211{
1da177e4 4212 char *cmd;
4fa6811b 4213 int newstatus = 0;
78f81cc4 4214
d8fd94d9 4215 if (!tp_features.light)
78f81cc4
BD		 4216 return -ENODEV;
4217
1da177e4
LT		 4218 while ((cmd = next_cmd(&buf))) {
4219 if (strlencmp(cmd, "on") == 0) {
4fa6811b 4220 newstatus = 1;
1da177e4 4221 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 4222 newstatus = 0;
1da177e4
LT		 4223 } else
4224 return -EINVAL;
1da177e4
LT		 4225 }
4226
4fa6811b 4227 return light_set_status(newstatus);
1da177e4
LT		 4228}
4229
a5763f22
HMH		 4230static struct ibm_struct light_driver_data = {
4231 .name = "light",
4232 .read = light_read,
4233 .write = light_write,
e306501d 4234 .exit = light_exit,
a5763f22
HMH		 4235};
4236
56b6aeb0
HMH		 4237/*************************************************************************
4238 * Dock subdriver
4239 */
1da177e4 4240
85998248 4241#ifdef CONFIG_THINKPAD_ACPI_DOCK
56b6aeb0 4242
f74a27d4
HMH		 4243static void dock_notify(struct ibm_struct *ibm, u32 event);
4244static int dock_read(char *p);
4245static int dock_write(char *buf);
4246
e0c7dfe7 4247TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
56b6aeb0
HMH		 4248 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
4249 "\\_SB.PCI0.PCI1.DOCK", /* all others */
4250 "\\_SB.PCI.ISA.SLCE", /* 570 */
4251 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
4252
5fba344c 4253/* don't list other alternatives as we install a notify handler on the 570 */
e0c7dfe7 4254TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
5fba344c 4255
1ba90e3a
TR		 4256static const struct acpi_device_id ibm_pci_device_ids[] = {
4257 {PCI_ROOT_HID_STRING, 0},
4258 {"", 0},
4259};
4260
d94a7f16
HMH		 4261static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
4262 {
4263 .notify = dock_notify,
4264 .handle = &dock_handle,
4265 .type = ACPI_SYSTEM_NOTIFY,
4266 },
4267 {
996fba08
HMH		 4268 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
4269 * We just use it to get notifications of dock hotplug
4270 * in very old thinkpads */
1ba90e3a 4271 .hid = ibm_pci_device_ids,
d94a7f16
HMH		 4272 .notify = dock_notify,
4273 .handle = &pci_handle,
4274 .type = ACPI_SYSTEM_NOTIFY,
4275 },
4276};
4277
4278static struct ibm_struct dock_driver_data[2] = {
4279 {
4280 .name = "dock",
4281 .read = dock_read,
4282 .write = dock_write,
4283 .acpi = &ibm_dock_acpidriver[0],
4284 },
4285 {
4286 .name = "dock",
4287 .acpi = &ibm_dock_acpidriver[1],
4288 },
4289};
4290
1da177e4
LT		 4291#define dock_docked() (_sta(dock_handle) & 1)
4292
a5763f22 4293static int __init dock_init(struct ibm_init_struct *iibm)
5fba344c 4294{
fe08bc4b
HMH		 4295 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
4296
e0c7dfe7 4297 TPACPI_ACPIHANDLE_INIT(dock);
5fba344c 4298
fe08bc4b
HMH		 4299 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
4300 str_supported(dock_handle != NULL));
4301
5fba344c
HMH		 4302 return (dock_handle)? 0 : 1;
4303}
4304
d94a7f16
HMH		 4305static int __init dock_init2(struct ibm_init_struct *iibm)
4306{
4307 int dock2_needed;
4308
4309 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
4310
4311 if (dock_driver_data[0].flags.acpi_driver_registered &&
4312 dock_driver_data[0].flags.acpi_notify_installed) {
e0c7dfe7 4313 TPACPI_ACPIHANDLE_INIT(pci);
d94a7f16
HMH		 4314 dock2_needed = (pci_handle != NULL);
4315 vdbg_printk(TPACPI_DBG_INIT,
4316 "dock PCI handler for the TP 570 is %s\n",
4317 str_supported(dock2_needed));
4318 } else {
4319 vdbg_printk(TPACPI_DBG_INIT,
4320 "dock subdriver part 2 not required\n");
4321 dock2_needed = 0;
4322 }
4323
4324 return (dock2_needed)? 0 : 1;
4325}
4326
56b6aeb0
HMH		 4327static void dock_notify(struct ibm_struct *ibm, u32 event)
4328{
4329 int docked = dock_docked();
1ba90e3a
TR		 4330 int pci = ibm->acpi->hid && ibm->acpi->device &&
4331 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
962ce8ca 4332 int data;
56b6aeb0
HMH		 4333
4334 if (event == 1 && !pci) /* 570 */
962ce8ca 4335 data = 1; /* button */
56b6aeb0 4336 else if (event == 1 && pci) /* 570 */
962ce8ca 4337 data = 3; /* dock */
56b6aeb0 4338 else if (event == 3 && docked)
962ce8ca 4339 data = 1; /* button */
56b6aeb0 4340 else if (event == 3 && !docked)
962ce8ca 4341 data = 2; /* undock */
56b6aeb0 4342 else if (event == 0 && docked)
962ce8ca 4343 data = 3; /* dock */
56b6aeb0 4344 else {
e0c7dfe7 4345 printk(TPACPI_ERR "unknown dock event %d, status %d\n",
56b6aeb0 4346 event, _sta(dock_handle));
962ce8ca 4347 data = 0; /* unknown */
56b6aeb0 4348 }
14e04fb3 4349 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
962ce8ca 4350 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
e0b36fc5 4351 dev_name(&ibm->acpi->device->dev),
962ce8ca 4352 event, data);
56b6aeb0
HMH		 4353}
4354
78f81cc4 4355static int dock_read(char *p)
1da177e4
LT		 4356{
4357 int len = 0;
4358 int docked = dock_docked();
4359
4360 if (!dock_handle)
4361 len += sprintf(p + len, "status:\t\tnot supported\n");
4362 else if (!docked)
4363 len += sprintf(p + len, "status:\t\tundocked\n");
4364 else {
4365 len += sprintf(p + len, "status:\t\tdocked\n");
4366 len += sprintf(p + len, "commands:\tdock, undock\n");
4367 }
4368
4369 return len;
4370}
4371
78f81cc4 4372static int dock_write(char *buf)
1da177e4
LT		 4373{
4374 char *cmd;
4375
4376 if (!dock_docked())
78f81cc4 4377 return -ENODEV;
1da177e4
LT		 4378
4379 while ((cmd = next_cmd(&buf))) {
4380 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 4381 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
4382 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
56b6aeb0
HMH		 4383 return -EIO;
4384 } else if (strlencmp(cmd, "dock") == 0) {
4385 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
4386 return -EIO;
4387 } else
4388 return -EINVAL;
1da177e4 4389 }
56b6aeb0
HMH		 4390
4391 return 0;
1da177e4 4392}
56b6aeb0 4393
85998248 4394#endif /* CONFIG_THINKPAD_ACPI_DOCK */
56b6aeb0
HMH		 4395
4396/*************************************************************************
4397 * Bay subdriver
4398 */
1da177e4 4399
85998248 4400#ifdef CONFIG_THINKPAD_ACPI_BAY
f74a27d4 4401
e0c7dfe7 4402TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
56b6aeb0
HMH		 4403 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
4404 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
4405 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
4406 ); /* A21e, R30, R31 */
e0c7dfe7 4407TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
56b6aeb0
HMH		 4408 "_EJ0", /* all others */
4409 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
e0c7dfe7 4410TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
56b6aeb0
HMH		 4411 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
4412 ); /* all others */
e0c7dfe7 4413TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
56b6aeb0
HMH		 4414 "_EJ0", /* 770x */
4415 ); /* all others */
4416
a5763f22 4417static int __init bay_init(struct ibm_init_struct *iibm)
1da177e4 4418{
fe08bc4b
HMH		 4419 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
4420
e0c7dfe7 4421 TPACPI_ACPIHANDLE_INIT(bay);
5fba344c 4422 if (bay_handle)
e0c7dfe7
HMH		 4423 TPACPI_ACPIHANDLE_INIT(bay_ej);
4424 TPACPI_ACPIHANDLE_INIT(bay2);
5fba344c 4425 if (bay2_handle)
e0c7dfe7 4426 TPACPI_ACPIHANDLE_INIT(bay2_ej);
5fba344c 4427
d8fd94d9
HMH		 4428 tp_features.bay_status = bay_handle &&
4429 acpi_evalf(bay_handle, NULL, "_STA", "qv");
4430 tp_features.bay_status2 = bay2_handle &&
4431 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
78f81cc4 4432
d8fd94d9
HMH		 4433 tp_features.bay_eject = bay_handle && bay_ej_handle &&
4434 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
4435 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
4436 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4 4437
fe08bc4b
HMH		 4438 vdbg_printk(TPACPI_DBG_INIT,
4439 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
d8fd94d9
HMH		 4440 str_supported(tp_features.bay_status),
4441 str_supported(tp_features.bay_eject),
4442 str_supported(tp_features.bay_status2),
4443 str_supported(tp_features.bay_eject2));
fe08bc4b 4444
d8fd94d9
HMH		 4445 return (tp_features.bay_status || tp_features.bay_eject ||
4446 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1da177e4
LT		 4447}
4448
56b6aeb0
HMH		 4449static void bay_notify(struct ibm_struct *ibm, u32 event)
4450{
14e04fb3 4451 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
962ce8ca 4452 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
e0b36fc5 4453 dev_name(&ibm->acpi->device->dev),
962ce8ca 4454 event, 0);
56b6aeb0
HMH		 4455}
4456
78f81cc4
BD		 4457#define bay_occupied(b) (_sta(b##_handle) & 1)
4458
4459static int bay_read(char *p)
1da177e4
LT		 4460{
4461 int len = 0;
78f81cc4
BD		 4462 int occupied = bay_occupied(bay);
4463 int occupied2 = bay_occupied(bay2);
4464 int eject, eject2;
4465
d8fd94d9
HMH		 4466 len += sprintf(p + len, "status:\t\t%s\n",
4467 tp_features.bay_status ?
4468 (occupied ? "occupied" : "unoccupied") :
4469 "not supported");
4470 if (tp_features.bay_status2)
78f81cc4
BD		 4471 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
4472 "occupied" : "unoccupied");
4473
d8fd94d9
HMH		 4474 eject = tp_features.bay_eject && occupied;
4475 eject2 = tp_features.bay_eject2 && occupied2;
78f81cc4
BD		 4476
4477 if (eject && eject2)
4478 len += sprintf(p + len, "commands:\teject, eject2\n");
4479 else if (eject)
1da177e4 4480 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 4481 else if (eject2)
4482 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 4483
4484 return len;
4485}
4486
78f81cc4 4487static int bay_write(char *buf)
1da177e4
LT		 4488{
4489 char *cmd;
4490
d8fd94d9 4491 if (!tp_features.bay_eject && !tp_features.bay_eject2)
78f81cc4
BD		 4492 return -ENODEV;
4493
1da177e4 4494 while ((cmd = next_cmd(&buf))) {
d8fd94d9 4495 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
78f81cc4
BD		 4496 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
4497 return -EIO;
d8fd94d9 4498 } else if (tp_features.bay_eject2 &&
78f81cc4
BD		 4499 strlencmp(cmd, "eject2") == 0) {
4500 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 4501 return -EIO;
4502 } else
4503 return -EINVAL;
4504 }
4505
4506 return 0;
78f81cc4 4507}
a5763f22 4508
8d376cd6
HMH		 4509static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
4510 .notify = bay_notify,
4511 .handle = &bay_handle,
4512 .type = ACPI_SYSTEM_NOTIFY,
4513};
4514
a5763f22
HMH		 4515static struct ibm_struct bay_driver_data = {
4516 .name = "bay",
4517 .read = bay_read,
4518 .write = bay_write,
8d376cd6 4519 .acpi = &ibm_bay_acpidriver,
a5763f22
HMH		 4520};
4521
85998248 4522#endif /* CONFIG_THINKPAD_ACPI_BAY */
1da177e4 4523
56b6aeb0
HMH		 4524/*************************************************************************
4525 * CMOS subdriver
4526 */
4527
b616004c
HMH		 4528/* sysfs cmos_command -------------------------------------------------- */
4529static ssize_t cmos_command_store(struct device *dev,
4530 struct device_attribute *attr,
4531 const char *buf, size_t count)
4532{
4533 unsigned long cmos_cmd;
4534 int res;
4535
4536 if (parse_strtoul(buf, 21, &cmos_cmd))
4537 return -EINVAL;
4538
4539 res = issue_thinkpad_cmos_command(cmos_cmd);
4540 return (res)? res : count;
4541}
4542
4543static struct device_attribute dev_attr_cmos_command =
4544 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4545
4546/* --------------------------------------------------------------------- */
4547
a5763f22 4548static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 4549{
b616004c
HMH		 4550 int res;
4551
fe08bc4b
HMH		 4552 vdbg_printk(TPACPI_DBG_INIT,
4553 "initializing cmos commands subdriver\n");
4554
e0c7dfe7 4555 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 4556
fe08bc4b
HMH		 4557 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4558 str_supported(cmos_handle != NULL));
b616004c
HMH		 4559
4560 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4561 if (res)
4562 return res;
4563
5fba344c
HMH		 4564 return (cmos_handle)? 0 : 1;
4565}
4566
b616004c
HMH		 4567static void cmos_exit(void)
4568{
4569 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4570}
4571
78f81cc4 4572static int cmos_read(char *p)
1da177e4
LT		 4573{
4574 int len = 0;
4575
78f81cc4
BD		 4576 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4577 R30, R31, T20-22, X20-21 */
1da177e4
LT		 4578 if (!cmos_handle)
4579 len += sprintf(p + len, "status:\t\tnot supported\n");
4580 else {
4581 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 4582 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 4583 }
4584
4585 return len;
4586}
4587
78f81cc4 4588static int cmos_write(char *buf)
1da177e4
LT		 4589{
4590 char *cmd;
c9bea99c 4591 int cmos_cmd, res;
1da177e4
LT		 4592
4593 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 4594 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4595 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 4596 /* cmos_cmd set */
4597 } else
4598 return -EINVAL;
4599
c9bea99c
HMH		 4600 res = issue_thinkpad_cmos_command(cmos_cmd);
4601 if (res)
4602 return res;
1da177e4
LT		 4603 }
4604
4605 return 0;
78f81cc4
BD		 4606}
4607
a5763f22
HMH		 4608static struct ibm_struct cmos_driver_data = {
4609 .name = "cmos",
4610 .read = cmos_read,
4611 .write = cmos_write,
b616004c 4612 .exit = cmos_exit,
a5763f22 4613};
56b6aeb0
HMH		 4614
4615/*************************************************************************
4616 * LED subdriver
4617 */
4618
f74a27d4
HMH		 4619enum led_access_mode {
4620 TPACPI_LED_NONE = 0,
4621 TPACPI_LED_570, /* 570 */
4622 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4623 TPACPI_LED_NEW, /* all others */
4624};
4625
4626enum { /* For TPACPI_LED_OLD */
4627 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4628 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4629 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4630};
4631
4fa6811b
HMH		 4632enum led_status_t {
4633 TPACPI_LED_OFF = 0,
4634 TPACPI_LED_ON,
4635 TPACPI_LED_BLINK,
4636};
4637
9a8e1738 4638static enum led_access_mode led_supported;
78f81cc4 4639
e0c7dfe7 4640TPACPI_HANDLE(led, ec, "SLED", /* 570 */
35ff8b9f
HMH		 4641 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4642 /* T20-22, X20-21 */
56b6aeb0
HMH		 4643 "LED", /* all others */
4644 ); /* R30, R31 */
4645
af116101
HMH		 4646#define TPACPI_LED_NUMLEDS 8
4647static struct tpacpi_led_classdev *tpacpi_leds;
4648static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 4649static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 4650 /* there's a limit of 19 chars + NULL before 2.6.26 */
4651 "tpacpi::power",
4652 "tpacpi:orange:batt",
4653 "tpacpi:green:batt",
4654 "tpacpi::dock_active",
4655 "tpacpi::bay_active",
4656 "tpacpi::dock_batt",
4657 "tpacpi::unknown_led",
4658 "tpacpi::standby",
4659};
4660
24e45bbe 4661static int led_get_status(const unsigned int led)
4fa6811b
HMH		 4662{
4663 int status;
af116101 4664 enum led_status_t led_s;
4fa6811b
HMH		 4665
4666 switch (led_supported) {
4667 case TPACPI_LED_570:
4668 if (!acpi_evalf(ec_handle,
4669 &status, "GLED", "dd", 1 << led))
4670 return -EIO;
af116101 4671 led_s = (status == 0)?
4fa6811b
HMH		 4672 TPACPI_LED_OFF :
4673 ((status == 1)?
4674 TPACPI_LED_ON :
4675 TPACPI_LED_BLINK);
af116101
HMH		 4676 tpacpi_led_state_cache[led] = led_s;
4677 return led_s;
4fa6811b
HMH		 4678 default:
4679 return -ENXIO;
4680 }
4681
4682 /* not reached */
4683}
4684
24e45bbe
HMH		 4685static int led_set_status(const unsigned int led,
4686 const enum led_status_t ledstatus)
4fa6811b
HMH		 4687{
4688 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 4689 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
4690 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 4691
4692 int rc = 0;
4693
4694 switch (led_supported) {
4695 case TPACPI_LED_570:
24e45bbe
HMH		 4696 /* 570 */
4697 if (led > 7)
4698 return -EINVAL;
4699 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4700 (1 << led), led_sled_arg1[ledstatus]))
4701 rc = -EIO;
4702 break;
4fa6811b 4703 case TPACPI_LED_OLD:
24e45bbe
HMH		 4704 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
4705 if (led > 7)
4706 return -EINVAL;
4707 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
4708 if (rc >= 0)
4709 rc = ec_write(TPACPI_LED_EC_HLBL,
4710 (ledstatus == TPACPI_LED_BLINK) << led);
4711 if (rc >= 0)
4712 rc = ec_write(TPACPI_LED_EC_HLCL,
4713 (ledstatus != TPACPI_LED_OFF) << led);
4714 break;
4fa6811b 4715 case TPACPI_LED_NEW:
24e45bbe
HMH		 4716 /* all others */
4717 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4718 led, led_led_arg1[ledstatus]))
4719 rc = -EIO;
4720 break;
4fa6811b
HMH		 4721 default:
4722 rc = -ENXIO;
4723 }
4724
af116101
HMH		 4725 if (!rc)
4726 tpacpi_led_state_cache[led] = ledstatus;
4727
4728 return rc;
4729}
4730
4731static void led_sysfs_set_status(unsigned int led,
4732 enum led_brightness brightness)
4733{
4734 led_set_status(led,
4735 (brightness == LED_OFF) ?
4736 TPACPI_LED_OFF :
4737 (tpacpi_led_state_cache[led] == TPACPI_LED_BLINK) ?
4738 TPACPI_LED_BLINK : TPACPI_LED_ON);
4739}
4740
4741static void led_set_status_worker(struct work_struct *work)
4742{
4743 struct tpacpi_led_classdev *data =
4744 container_of(work, struct tpacpi_led_classdev, work);
4745
4746 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4747 led_sysfs_set_status(data->led, data->new_brightness);
4748}
4749
4750static void led_sysfs_set(struct led_classdev *led_cdev,
4751 enum led_brightness brightness)
4752{
4753 struct tpacpi_led_classdev *data = container_of(led_cdev,
4754 struct tpacpi_led_classdev, led_classdev);
4755
4756 data->new_brightness = brightness;
e0e3c061 4757 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4758}
4759
4760static int led_sysfs_blink_set(struct led_classdev *led_cdev,
4761 unsigned long *delay_on, unsigned long *delay_off)
4762{
4763 struct tpacpi_led_classdev *data = container_of(led_cdev,
4764 struct tpacpi_led_classdev, led_classdev);
4765
4766 /* Can we choose the flash rate? */
4767 if (*delay_on == 0 && *delay_off == 0) {
4768 /* yes. set them to the hardware blink rate (1 Hz) */
4769 *delay_on = 500; /* ms */
4770 *delay_off = 500; /* ms */
4771 } else if ((*delay_on != 500) || (*delay_off != 500))
4772 return -EINVAL;
4773
4774 data->new_brightness = TPACPI_LED_BLINK;
e0e3c061 4775 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4776
4777 return 0;
4778}
4779
4780static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
4781{
4782 int rc;
4783
4784 struct tpacpi_led_classdev *data = container_of(led_cdev,
4785 struct tpacpi_led_classdev, led_classdev);
4786
4787 rc = led_get_status(data->led);
4788
4789 if (rc == TPACPI_LED_OFF || rc < 0)
4790 rc = LED_OFF; /* no error handling in led class :( */
4791 else
4792 rc = LED_FULL;
4793
4fa6811b
HMH		 4794 return rc;
4795}
4796
af116101
HMH		 4797static void led_exit(void)
4798{
4799 unsigned int i;
4800
4801 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4802 if (tpacpi_leds[i].led_classdev.name)
4803 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
4804 }
4805
4806 kfree(tpacpi_leds);
af116101
HMH		 4807}
4808
a5763f22 4809static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 4810{
af116101
HMH		 4811 unsigned int i;
4812 int rc;
4813
fe08bc4b
HMH		 4814 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
4815
e0c7dfe7 4816 TPACPI_ACPIHANDLE_INIT(led);
5fba344c 4817
78f81cc4
BD		 4818 if (!led_handle)
4819 /* led not supported on R30, R31 */
efa27145 4820 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 4821 else if (strlencmp(led_path, "SLED") == 0)
4822 /* 570 */
efa27145 4823 led_supported = TPACPI_LED_570;
78f81cc4
BD		 4824 else if (strlencmp(led_path, "SYSL") == 0)
4825 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 4826 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 4827 else
4828 /* all others */
efa27145 4829 led_supported = TPACPI_LED_NEW;
78f81cc4 4830
fe08bc4b
HMH		 4831 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
4832 str_supported(led_supported), led_supported);
4833
af116101
HMH		 4834 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
4835 GFP_KERNEL);
4836 if (!tpacpi_leds) {
4837 printk(TPACPI_ERR "Out of memory for LED data\n");
4838 return -ENOMEM;
4839 }
4840
4841 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4842 tpacpi_leds[i].led = i;
4843
4844 tpacpi_leds[i].led_classdev.brightness_set = &led_sysfs_set;
4845 tpacpi_leds[i].led_classdev.blink_set = &led_sysfs_blink_set;
4846 if (led_supported == TPACPI_LED_570)
4847 tpacpi_leds[i].led_classdev.brightness_get =
4848 &led_sysfs_get;
4849
4850 tpacpi_leds[i].led_classdev.name = tpacpi_led_names[i];
4851
4852 INIT_WORK(&tpacpi_leds[i].work, led_set_status_worker);
4853
4854 rc = led_classdev_register(&tpacpi_pdev->dev,
4855 &tpacpi_leds[i].led_classdev);
4856 if (rc < 0) {
4857 tpacpi_leds[i].led_classdev.name = NULL;
4858 led_exit();
4859 return rc;
4860 }
4861 }
4862
5fba344c 4863 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
78f81cc4
BD		 4864}
4865
4fa6811b
HMH		 4866#define str_led_status(s) \
4867 ((s) == TPACPI_LED_OFF ? "off" : \
4868 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4
BD		 4869
4870static int led_read(char *p)
1da177e4
LT		 4871{
4872 int len = 0;
4873
78f81cc4
BD		 4874 if (!led_supported) {
4875 len += sprintf(p + len, "status:\t\tnot supported\n");
4876 return len;
4877 }
4878 len += sprintf(p + len, "status:\t\tsupported\n");
4879
efa27145 4880 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 4881 /* 570 */
4882 int i, status;
4883 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 4884 status = led_get_status(i);
4885 if (status < 0)
78f81cc4
BD		 4886 return -EIO;
4887 len += sprintf(p + len, "%d:\t\t%s\n",
4fa6811b 4888 i, str_led_status(status));
78f81cc4
BD		 4889 }
4890 }
4891
1da177e4 4892 len += sprintf(p + len, "commands:\t"
78f81cc4 4893 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 4894
4895 return len;
4896}
4897
78f81cc4 4898static int led_write(char *buf)
1da177e4
LT		 4899{
4900 char *cmd;
4fa6811b
HMH		 4901 int led, rc;
4902 enum led_status_t s;
78f81cc4
BD		 4903
4904 if (!led_supported)
4905 return -ENODEV;
1da177e4
LT		 4906
4907 while ((cmd = next_cmd(&buf))) {
78f81cc4 4908 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 4909 return -EINVAL;
4910
78f81cc4 4911 if (strstr(cmd, "off")) {
4fa6811b 4912 s = TPACPI_LED_OFF;
1da177e4 4913 } else if (strstr(cmd, "on")) {
4fa6811b 4914 s = TPACPI_LED_ON;
78f81cc4 4915 } else if (strstr(cmd, "blink")) {
4fa6811b 4916 s = TPACPI_LED_BLINK;
78f81cc4 4917 } else {
4fa6811b 4918 return -EINVAL;
78f81cc4 4919 }
4fa6811b
HMH		 4920
4921 rc = led_set_status(led, s);
4922 if (rc < 0)
4923 return rc;
78f81cc4
BD		 4924 }
4925
4926 return 0;
4927}
4928
a5763f22
HMH		 4929static struct ibm_struct led_driver_data = {
4930 .name = "led",
4931 .read = led_read,
4932 .write = led_write,
af116101 4933 .exit = led_exit,
a5763f22
HMH		 4934};
4935
56b6aeb0
HMH		 4936/*************************************************************************
4937 * Beep subdriver
4938 */
4939
e0c7dfe7 4940TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 4941
a5763f22 4942static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 4943{
fe08bc4b
HMH		 4944 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
4945
e0c7dfe7 4946 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 4947
fe08bc4b
HMH		 4948 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
4949 str_supported(beep_handle != NULL));
4950
5fba344c
HMH		 4951 return (beep_handle)? 0 : 1;
4952}
4953
78f81cc4
BD		 4954static int beep_read(char *p)
4955{
4956 int len = 0;
4957
4958 if (!beep_handle)
4959 len += sprintf(p + len, "status:\t\tnot supported\n");
4960 else {
4961 len += sprintf(p + len, "status:\t\tsupported\n");
4962 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
4963 }
4964
4965 return len;
4966}
4967
4968static int beep_write(char *buf)
4969{
4970 char *cmd;
4971 int beep_cmd;
4972
4973 if (!beep_handle)
4974 return -ENODEV;
4975
4976 while ((cmd = next_cmd(&buf))) {
4977 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
4978 beep_cmd >= 0 && beep_cmd <= 17) {
4979 /* beep_cmd set */
4980 } else
4981 return -EINVAL;
4982 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
4983 return -EIO;
4984 }
4985
4986 return 0;
4987}
4988
a5763f22
HMH		 4989static struct ibm_struct beep_driver_data = {
4990 .name = "beep",
4991 .read = beep_read,
4992 .write = beep_write,
4993};
4994
56b6aeb0
HMH		 4995/*************************************************************************
4996 * Thermal subdriver
4997 */
78f81cc4 4998
f74a27d4
HMH		 4999enum thermal_access_mode {
5000 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5001 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5002 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5003 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5004 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5005};
5006
5007enum { /* TPACPI_THERMAL_TPEC_* */
5008 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5009 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5010 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
5011};
5012
5013#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5014struct ibm_thermal_sensors_struct {
5015 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5016};
5017
a26f878a 5018static enum thermal_access_mode thermal_read_mode;
78f81cc4 5019
b21a15f6
HMH		 5020/* idx is zero-based */
5021static int thermal_get_sensor(int idx, s32 *value)
5022{
5023 int t;
5024 s8 tmp;
5025 char tmpi[5];
5026
5027 t = TP_EC_THERMAL_TMP0;
5028
5029 switch (thermal_read_mode) {
5030#if TPACPI_MAX_THERMAL_SENSORS >= 16
5031 case TPACPI_THERMAL_TPEC_16:
5032 if (idx >= 8 && idx <= 15) {
5033 t = TP_EC_THERMAL_TMP8;
5034 idx -= 8;
5035 }
5036 /* fallthrough */
5037#endif
5038 case TPACPI_THERMAL_TPEC_8:
5039 if (idx <= 7) {
5040 if (!acpi_ec_read(t + idx, &tmp))
5041 return -EIO;
5042 *value = tmp * 1000;
5043 return 0;
5044 }
5045 break;
5046
5047 case TPACPI_THERMAL_ACPI_UPDT:
5048 if (idx <= 7) {
5049 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5050 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5051 return -EIO;
5052 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5053 return -EIO;
5054 *value = (t - 2732) * 100;
5055 return 0;
5056 }
5057 break;
5058
5059 case TPACPI_THERMAL_ACPI_TMP07:
5060 if (idx <= 7) {
5061 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5062 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5063 return -EIO;
5064 if (t > 127 || t < -127)
5065 t = TP_EC_THERMAL_TMP_NA;
5066 *value = t * 1000;
5067 return 0;
5068 }
5069 break;
5070
5071 case TPACPI_THERMAL_NONE:
5072 default:
5073 return -ENOSYS;
5074 }
5075
5076 return -EINVAL;
5077}
5078
5079static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5080{
5081 int res, i;
5082 int n;
5083
5084 n = 8;
5085 i = 0;
5086
5087 if (!s)
5088 return -EINVAL;
5089
5090 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5091 n = 16;
5092
35ff8b9f 5093 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5094 res = thermal_get_sensor(i, &s->temp[i]);
5095 if (res)
5096 return res;
5097 }
5098
5099 return n;
5100}
f74a27d4 5101
2c37aa4e
HMH		 5102/* sysfs temp##_input -------------------------------------------------- */
5103
5104static ssize_t thermal_temp_input_show(struct device *dev,
5105 struct device_attribute *attr,
5106 char *buf)
5107{
5108 struct sensor_device_attribute *sensor_attr =
5109 to_sensor_dev_attr(attr);
5110 int idx = sensor_attr->index;
5111 s32 value;
5112 int res;
5113
5114 res = thermal_get_sensor(idx, &value);
5115 if (res)
5116 return res;
5117 if (value == TP_EC_THERMAL_TMP_NA * 1000)
5118 return -ENXIO;
5119
5120 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5121}
5122
5123#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5124 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5125 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5126
5127static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5128 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5129 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5130 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5131 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5132 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5133 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5134 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5135 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5136 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5137 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5138 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5139 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5140 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5141 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5142 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5143 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5144};
5145
5146#define THERMAL_ATTRS(X) \
5147 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5148
5149static struct attribute *thermal_temp_input_attr[] = {
5150 THERMAL_ATTRS(8),
5151 THERMAL_ATTRS(9),
5152 THERMAL_ATTRS(10),
5153 THERMAL_ATTRS(11),
5154 THERMAL_ATTRS(12),
5155 THERMAL_ATTRS(13),
5156 THERMAL_ATTRS(14),
5157 THERMAL_ATTRS(15),
5158 THERMAL_ATTRS(0),
5159 THERMAL_ATTRS(1),
5160 THERMAL_ATTRS(2),
5161 THERMAL_ATTRS(3),
5162 THERMAL_ATTRS(4),
5163 THERMAL_ATTRS(5),
5164 THERMAL_ATTRS(6),
5165 THERMAL_ATTRS(7),
5166 NULL
5167};
5168
5169static const struct attribute_group thermal_temp_input16_group = {
5170 .attrs = thermal_temp_input_attr
5171};
5172
5173static const struct attribute_group thermal_temp_input8_group = {
5174 .attrs = &thermal_temp_input_attr[8]
5175};
5176
5177#undef THERMAL_SENSOR_ATTR_TEMP
5178#undef THERMAL_ATTRS
5179
5180/* --------------------------------------------------------------------- */
5181
a5763f22 5182static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5183{
60eb0b35
HMH		 5184 u8 t, ta1, ta2;
5185 int i;
5fba344c 5186 int acpi_tmp7;
2c37aa4e 5187 int res;
5fba344c 5188
fe08bc4b
HMH		 5189 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5190
5fba344c 5191 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5192
3d6f99ca 5193 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5194 /*
5195 * Direct EC access mode: sensors at registers
5196 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5197 * non-implemented, thermal sensors return 0x80 when
5198 * not available
5199 */
78f81cc4 5200
60eb0b35
HMH		 5201 ta1 = ta2 = 0;
5202 for (i = 0; i < 8; i++) {
04cc862c 5203 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5204 ta1 |= t;
5205 } else {
5206 ta1 = 0;
5207 break;
5208 }
04cc862c 5209 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5210 ta2 |= t;
5211 } else {
5212 ta1 = 0;
5213 break;
5214 }
5215 }
5216 if (ta1 == 0) {
5217 /* This is sheer paranoia, but we handle it anyway */
5218 if (acpi_tmp7) {
e0c7dfe7 5219 printk(TPACPI_ERR
60eb0b35 5220 "ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5221 "falling back to ACPI TMPx access "
5222 "mode\n");
efa27145 5223 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5224 } else {
e0c7dfe7 5225 printk(TPACPI_ERR
60eb0b35
HMH		 5226 "ThinkPad ACPI EC access misbehaving, "
5227 "disabling thermal sensors access\n");
efa27145 5228 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5229 }
5230 } else {
5231 thermal_read_mode =
5232 (ta2 != 0) ?
efa27145 5233 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5234 }
5235 } else if (acpi_tmp7) {
a26f878a
HMH		 5236 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
5237 /* 600e/x, 770e, 770x */
efa27145 5238 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 5239 } else {
5240 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 5241 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5242 }
5243 } else {
5244 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5245 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5246 }
78f81cc4 5247
fe08bc4b
HMH		 5248 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5249 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5250 thermal_read_mode);
5251
35ff8b9f 5252 switch (thermal_read_mode) {
2c37aa4e 5253 case TPACPI_THERMAL_TPEC_16:
7fd40029 5254 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5255 &thermal_temp_input16_group);
5256 if (res)
5257 return res;
5258 break;
5259 case TPACPI_THERMAL_TPEC_8:
5260 case TPACPI_THERMAL_ACPI_TMP07:
5261 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5262 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5263 &thermal_temp_input8_group);
5264 if (res)
5265 return res;
5266 break;
5267 case TPACPI_THERMAL_NONE:
5268 default:
5269 return 1;
5270 }
5271
5272 return 0;
5273}
5274
5275static void thermal_exit(void)
5276{
35ff8b9f 5277 switch (thermal_read_mode) {
2c37aa4e 5278 case TPACPI_THERMAL_TPEC_16:
7fd40029 5279 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5280 &thermal_temp_input16_group);
5281 break;
5282 case TPACPI_THERMAL_TPEC_8:
5283 case TPACPI_THERMAL_ACPI_TMP07:
5284 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5285 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5286 &thermal_temp_input16_group);
5287 break;
5288 case TPACPI_THERMAL_NONE:
5289 default:
5290 break;
5291 }
78f81cc4
BD		 5292}
5293
a26f878a
HMH		 5294static int thermal_read(char *p)
5295{
5296 int len = 0;
5297 int n, i;
5298 struct ibm_thermal_sensors_struct t;
5299
5300 n = thermal_get_sensors(&t);
5301 if (unlikely(n < 0))
5302 return n;
5303
5304 len += sprintf(p + len, "temperatures:\t");
5305
5306 if (n > 0) {
5307 for (i = 0; i < (n - 1); i++)
5308 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
5309 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
5310 } else
5311 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 5312
5313 return len;
5314}
5315
a5763f22
HMH		 5316static struct ibm_struct thermal_driver_data = {
5317 .name = "thermal",
5318 .read = thermal_read,
2c37aa4e 5319 .exit = thermal_exit,
a5763f22
HMH		 5320};
5321
56b6aeb0
HMH		 5322/*************************************************************************
5323 * EC Dump subdriver
5324 */
5325
78f81cc4
BD		 5326static u8 ecdump_regs[256];
5327
5328static int ecdump_read(char *p)
5329{
5330 int len = 0;
5331 int i, j;
5332 u8 v;
5333
5334 len += sprintf(p + len, "EC "
5335 " +00 +01 +02 +03 +04 +05 +06 +07"
5336 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5337 for (i = 0; i < 256; i += 16) {
5338 len += sprintf(p + len, "EC 0x%02x:", i);
5339 for (j = 0; j < 16; j++) {
5340 if (!acpi_ec_read(i + j, &v))
5341 break;
5342 if (v != ecdump_regs[i + j])
5343 len += sprintf(p + len, " *%02x", v);
5344 else
5345 len += sprintf(p + len, " %02x", v);
5346 ecdump_regs[i + j] = v;
5347 }
5348 len += sprintf(p + len, "\n");
5349 if (j != 16)
5350 break;
5351 }
5352
5353 /* These are way too dangerous to advertise openly... */
5354#if 0
5355 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
5356 " (<offset> is 00-ff, <value> is 00-ff)\n");
5357 len += sprintf(p + len, "commands:\t0x<offset> <value> "
5358 " (<offset> is 00-ff, <value> is 0-255)\n");
5359#endif
5360 return len;
5361}
5362
5363static int ecdump_write(char *buf)
5364{
5365 char *cmd;
5366 int i, v;
5367
5368 while ((cmd = next_cmd(&buf))) {
5369 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5370 /* i and v set */
5371 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5372 /* i and v set */
5373 } else
5374 return -EINVAL;
5375 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5376 if (!acpi_ec_write(i, v))
1da177e4
LT		 5377 return -EIO;
5378 } else
5379 return -EINVAL;
5380 }
5381
5382 return 0;
78f81cc4
BD		 5383}
5384
a5763f22
HMH		 5385static struct ibm_struct ecdump_driver_data = {
5386 .name = "ecdump",
5387 .read = ecdump_read,
5388 .write = ecdump_write,
92641177 5389 .flags.experimental = 1,
a5763f22
HMH		 5390};
5391
56b6aeb0
HMH		 5392/*************************************************************************
5393 * Backlight/brightness subdriver
5394 */
5395
f74a27d4
HMH		 5396#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5397
e11aecf1
HMH		 5398enum {
5399 TP_EC_BACKLIGHT = 0x31,
5400
5401 /* TP_EC_BACKLIGHT bitmasks */
5402 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5403 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5404 TP_EC_BACKLIGHT_MAPSW = 0x20,
5405};
5406
94954cc6 5407static struct backlight_device *ibm_backlight_device;
f74a27d4
HMH		 5408static int brightness_mode;
5409static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5410
b21a15f6 5411static struct mutex brightness_mutex;
56b6aeb0 5412
b21a15f6
HMH		 5413/*
5414 * ThinkPads can read brightness from two places: EC 0x31, or
5415 * CMOS NVRAM byte 0x5E, bits 0-3.
e11aecf1
HMH		 5416 *
5417 * EC 0x31 has the following layout
5418 * Bit 7: unknown function
5419 * Bit 6: unknown function
5420 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5421 * Bit 4: must be set to zero to avoid problems
5422 * Bit 3-0: backlight brightness level
5423 *
5424 * brightness_get_raw returns status data in the EC 0x31 layout
b21a15f6 5425 */
e11aecf1 5426static int brightness_get_raw(int *status)
b21a15f6
HMH		 5427{
5428 u8 lec = 0, lcmos = 0, level = 0;
5429
5430 if (brightness_mode & 1) {
e11aecf1 5431 if (!acpi_ec_read(TP_EC_BACKLIGHT, &lec))
b21a15f6 5432 return -EIO;
e11aecf1 5433 level = lec & TP_EC_BACKLIGHT_LVLMSK;
b21a15f6
HMH		 5434 };
5435 if (brightness_mode & 2) {
5436 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5437 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5438 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
5439 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
5440 level = lcmos;
5441 }
5442
2d5e94d7 5443 if (brightness_mode == 3) {
e11aecf1
HMH		 5444 *status = lec; /* Prefer EC, CMOS is just a backing store */
5445 lec &= TP_EC_BACKLIGHT_LVLMSK;
2d5e94d7
HMH		 5446 if (lec == lcmos)
5447 tp_warned.bright_cmos_ec_unsync = 0;
5448 else {
5449 if (!tp_warned.bright_cmos_ec_unsync) {
5450 printk(TPACPI_ERR
5451 "CMOS NVRAM (%u) and EC (%u) do not "
5452 "agree on display brightness level\n",
5453 (unsigned int) lcmos,
5454 (unsigned int) lec);
5455 tp_warned.bright_cmos_ec_unsync = 1;
5456 }
5457 return -EIO;
5458 }
e11aecf1
HMH		 5459 } else {
5460 *status = level;
b21a15f6
HMH		 5461 }
5462
e11aecf1 5463 return 0;
b21a15f6
HMH		 5464}
5465
5466/* May return EINTR which can always be mapped to ERESTARTSYS */
5467static int brightness_set(int value)
5468{
5469 int cmos_cmd, inc, i, res;
5470 int current_value;
e11aecf1 5471 int command_bits;
b21a15f6 5472
e11aecf1
HMH		 5473 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
5474 value < 0)
b21a15f6
HMH		 5475 return -EINVAL;
5476
7646ea88 5477 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 5478 if (res < 0)
5479 return res;
5480
e11aecf1
HMH		 5481 res = brightness_get_raw(&current_value);
5482 if (res < 0)
b21a15f6 5483 goto errout;
e11aecf1
HMH		 5484
5485 command_bits = current_value & TP_EC_BACKLIGHT_CMDMSK;
5486 current_value &= TP_EC_BACKLIGHT_LVLMSK;
b21a15f6
HMH		 5487
5488 cmos_cmd = value > current_value ?
5489 TP_CMOS_BRIGHTNESS_UP :
5490 TP_CMOS_BRIGHTNESS_DOWN;
5491 inc = (value > current_value)? 1 : -1;
5492
5493 res = 0;
5494 for (i = current_value; i != value; i += inc) {
5495 if ((brightness_mode & 2) &&
5496 issue_thinkpad_cmos_command(cmos_cmd)) {
5497 res = -EIO;
5498 goto errout;
5499 }
5500 if ((brightness_mode & 1) &&
e11aecf1
HMH		 5501 !acpi_ec_write(TP_EC_BACKLIGHT,
5502 (i + inc) | command_bits)) {
b21a15f6
HMH		 5503 res = -EIO;
5504 goto errout;;
5505 }
5506 }
5507
5508errout:
5509 mutex_unlock(&brightness_mutex);
5510 return res;
5511}
5512
5513/* sysfs backlight class ----------------------------------------------- */
5514
5515static int brightness_update_status(struct backlight_device *bd)
5516{
5517 /* it is the backlight class's job (caller) to handle
5518 * EINTR and other errors properly */
5519 return brightness_set(
5520 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
5521 bd->props.power == FB_BLANK_UNBLANK) ?
5522 bd->props.brightness : 0);
5523}
5524
e11aecf1 5525static int brightness_get(struct backlight_device *bd)
a3f104c0 5526{
e11aecf1 5527 int status, res;
a3f104c0 5528
e11aecf1
HMH		 5529 res = brightness_get_raw(&status);
5530 if (res < 0)
5531 return 0; /* FIXME: teach backlight about error handling */
e11e211a 5532
e11aecf1 5533 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 5534}
5535
b21a15f6 5536static struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 5537 .get_brightness = brightness_get,
5538 .update_status = brightness_update_status,
56b6aeb0 5539};
e11e211a 5540
b21a15f6 5541/* --------------------------------------------------------------------- */
e11e211a 5542
a5763f22 5543static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 5544{
5545 int b;
5546
fe08bc4b
HMH		 5547 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
5548
f432255e
HMH		 5549 mutex_init(&brightness_mutex);
5550
b5972796
HMH		 5551 /*
5552 * We always attempt to detect acpi support, so as to switch
5553 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5554 * going to publish a backlight interface
5555 */
5556 b = tpacpi_check_std_acpi_brightness_support();
5557 if (b > 0) {
2dba1b5d
TR		 5558
5559 if (acpi_video_backlight_support()) {
5560 if (brightness_enable > 1) {
5561 printk(TPACPI_NOTICE
5562 "Standard ACPI backlight interface "
5563 "available, not loading native one.\n");
5564 return 1;
5565 } else if (brightness_enable == 1) {
5566 printk(TPACPI_NOTICE
5567 "Backlight control force enabled, even if standard "
5568 "ACPI backlight interface is available\n");
5569 }
5570 } else {
5571 if (brightness_enable > 1) {
5572 printk(TPACPI_NOTICE
5573 "Standard ACPI backlight interface not "
5574 "available, thinkpad_acpi native "
5575 "brightness control enabled\n");
5576 }
e11e211a 5577 }
87cc537a
HMH		 5578 }
5579
b5972796
HMH		 5580 if (!brightness_enable) {
5581 dbg_printk(TPACPI_DBG_INIT,
5582 "brightness support disabled by "
5583 "module parameter\n");
5584 return 1;
5585 }
5586
5587 if (b > 16) {
5588 printk(TPACPI_ERR
5589 "Unsupported brightness interface, "
5590 "please contact %s\n", TPACPI_MAIL);
5591 return 1;
5592 }
5593 if (b == 16)
5594 tp_features.bright_16levels = 1;
5595
24d3b774
HMH		 5596 if (!brightness_mode) {
5597 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
5598 brightness_mode = 2;
5599 else
5600 brightness_mode = 3;
5601
5602 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
5603 brightness_mode);
5604 }
5605
5606 if (brightness_mode > 3)
5607 return -EINVAL;
5608
e11aecf1 5609 if (brightness_get_raw(&b) < 0)
24d3b774 5610 return 1;
56b6aeb0 5611
a3f104c0 5612 if (tp_features.bright_16levels)
35ff8b9f
HMH		 5613 printk(TPACPI_INFO
5614 "detected a 16-level brightness capable ThinkPad\n");
a3f104c0 5615
7d5a015e
HMH		 5616 ibm_backlight_device = backlight_device_register(
5617 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
5618 &ibm_backlight_data);
56b6aeb0 5619 if (IS_ERR(ibm_backlight_device)) {
e0c7dfe7 5620 printk(TPACPI_ERR "Could not register backlight device\n");
56b6aeb0
HMH		 5621 return PTR_ERR(ibm_backlight_device);
5622 }
fe08bc4b 5623 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
56b6aeb0 5624
a3f104c0
HMH		 5625 ibm_backlight_device->props.max_brightness =
5626 (tp_features.bright_16levels)? 15 : 7;
e11aecf1 5627 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
56b6aeb0
HMH		 5628 backlight_update_status(ibm_backlight_device);
5629
5630 return 0;
5631}
5632
5633static void brightness_exit(void)
5634{
5635 if (ibm_backlight_device) {
fe08bc4b
HMH		 5636 vdbg_printk(TPACPI_DBG_EXIT,
5637 "calling backlight_device_unregister()\n");
56b6aeb0 5638 backlight_device_unregister(ibm_backlight_device);
56b6aeb0
HMH		 5639 }
5640}
5641
56b6aeb0
HMH		 5642static int brightness_read(char *p)
5643{
5644 int len = 0;
5645 int level;
5646
35ff8b9f
HMH		 5647 level = brightness_get(NULL);
5648 if (level < 0) {
56b6aeb0
HMH		 5649 len += sprintf(p + len, "level:\t\tunreadable\n");
5650 } else {
a3f104c0 5651 len += sprintf(p + len, "level:\t\t%d\n", level);
56b6aeb0
HMH		 5652 len += sprintf(p + len, "commands:\tup, down\n");
5653 len += sprintf(p + len, "commands:\tlevel <level>"
a3f104c0
HMH		 5654 " (<level> is 0-%d)\n",
5655 (tp_features.bright_16levels) ? 15 : 7);
56b6aeb0
HMH		 5656 }
5657
5658 return len;
5659}
5660
8acb0250
HM		 5661static int brightness_write(char *buf)
5662{
5663 int level;
4273af8d 5664 int rc;
1da177e4 5665 char *cmd;
a3f104c0 5666 int max_level = (tp_features.bright_16levels) ? 15 : 7;
1da177e4 5667
4273af8d
HMH		 5668 level = brightness_get(NULL);
5669 if (level < 0)
5670 return level;
78f81cc4 5671
4273af8d 5672 while ((cmd = next_cmd(&buf))) {
78f81cc4 5673 if (strlencmp(cmd, "up") == 0) {
4273af8d
HMH		 5674 if (level < max_level)
5675 level++;
78f81cc4 5676 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 5677 if (level > 0)
5678 level--;
5679 } else if (sscanf(cmd, "level %d", &level) == 1 &&
5680 level >= 0 && level <= max_level) {
5681 /* new level set */
78f81cc4
BD		 5682 } else
5683 return -EINVAL;
78f81cc4
BD		 5684 }
5685
4273af8d
HMH		 5686 /*
5687 * Now we know what the final level should be, so we try to set it.
5688 * Doing it this way makes the syscall restartable in case of EINTR
5689 */
5690 rc = brightness_set(level);
5691 return (rc == -EINTR)? ERESTARTSYS : rc;
78f81cc4
BD		 5692}
5693
a5763f22
HMH		 5694static struct ibm_struct brightness_driver_data = {
5695 .name = "brightness",
5696 .read = brightness_read,
5697 .write = brightness_write,
5698 .exit = brightness_exit,
5699};
5700
56b6aeb0
HMH		 5701/*************************************************************************
5702 * Volume subdriver
5703 */
fb87a811 5704
f74a27d4
HMH		 5705static int volume_offset = 0x30;
5706
78f81cc4
BD		 5707static int volume_read(char *p)
5708{
5709 int len = 0;
5710 u8 level;
5711
5712 if (!acpi_ec_read(volume_offset, &level)) {
5713 len += sprintf(p + len, "level:\t\tunreadable\n");
5714 } else {
5715 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
5716 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
5717 len += sprintf(p + len, "commands:\tup, down, mute\n");
5718 len += sprintf(p + len, "commands:\tlevel <level>"
5719 " (<level> is 0-15)\n");
5720 }
5721
5722 return len;
5723}
5724
78f81cc4
BD		 5725static int volume_write(char *buf)
5726{
5727 int cmos_cmd, inc, i;
5728 u8 level, mute;
5729 int new_level, new_mute;
5730 char *cmd;
5731
5732 while ((cmd = next_cmd(&buf))) {
5733 if (!acpi_ec_read(volume_offset, &level))
5734 return -EIO;
5735 new_mute = mute = level & 0x40;
5736 new_level = level = level & 0xf;
5737
5738 if (strlencmp(cmd, "up") == 0) {
5739 if (mute)
5740 new_mute = 0;
5741 else
5742 new_level = level == 15 ? 15 : level + 1;
5743 } else if (strlencmp(cmd, "down") == 0) {
5744 if (mute)
5745 new_mute = 0;
5746 else
5747 new_level = level == 0 ? 0 : level - 1;
5748 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
5749 new_level >= 0 && new_level <= 15) {
5750 /* new_level set */
5751 } else if (strlencmp(cmd, "mute") == 0) {
5752 new_mute = 0x40;
1da177e4
LT		 5753 } else
5754 return -EINVAL;
5755
35ff8b9f
HMH		 5756 if (new_level != level) {
5757 /* mute doesn't change */
5758
5759 cmos_cmd = (new_level > level) ?
5760 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 5761 inc = new_level > level ? 1 : -1;
5762
c9bea99c 5763 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5764 !acpi_ec_write(volume_offset, level)))
5765 return -EIO;
5766
5767 for (i = level; i != new_level; i += inc)
c9bea99c 5768 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5769 !acpi_ec_write(volume_offset, i + inc))
5770 return -EIO;
5771
35ff8b9f
HMH		 5772 if (mute &&
5773 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
5774 !acpi_ec_write(volume_offset, new_level + mute))) {
78f81cc4 5775 return -EIO;
35ff8b9f 5776 }
78f81cc4
BD		 5777 }
5778
35ff8b9f
HMH		 5779 if (new_mute != mute) {
5780 /* level doesn't change */
5781
5782 cmos_cmd = (new_mute) ?
5783 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 5784
c9bea99c 5785 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5786 !acpi_ec_write(volume_offset, level + new_mute))
5787 return -EIO;
5788 }
5789 }
5790
5791 return 0;
5792}
5793
a5763f22
HMH		 5794static struct ibm_struct volume_driver_data = {
5795 .name = "volume",
5796 .read = volume_read,
5797 .write = volume_write,
5798};
56b6aeb0
HMH		 5799
5800/*************************************************************************
5801 * Fan subdriver
5802 */
5803
5804/*
5805 * FAN ACCESS MODES
5806 *
efa27145 5807 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 5808 * ACPI GFAN method: returns fan level
5809 *
efa27145 5810 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 5811 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 5812 *
efa27145 5813 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 5814 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
5815 *
f51d1a39
HMH		 5816 * EC 0x2f (HFSP) might be available *for reading*, but do not use
5817 * it for writing.
56b6aeb0 5818 *
efa27145 5819 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 5820 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
5821 * Supported on almost all ThinkPads
56b6aeb0
HMH		 5822 *
5823 * Fan speed changes of any sort (including those caused by the
5824 * disengaged mode) are usually done slowly by the firmware as the
5825 * maximum ammount of fan duty cycle change per second seems to be
5826 * limited.
5827 *
5828 * Reading is not available if GFAN exists.
5829 * Writing is not available if SFAN exists.
5830 *
5831 * Bits
5832 * 7 automatic mode engaged;
5833 * (default operation mode of the ThinkPad)
5834 * fan level is ignored in this mode.
f51d1a39 5835 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 5836 * not available on all thinkpads. May disable
f51d1a39
HMH		 5837 * the tachometer while the fan controller ramps up
5838 * the speed (which can take up to a few *minutes*).
5839 * Speeds up fan to 100% duty-cycle, which is far above
5840 * the standard RPM levels. It is not impossible that
5841 * it could cause hardware damage.
56b6aeb0
HMH		 5842 * 5-3 unused in some models. Extra bits for fan level
5843 * in others, but still useless as all values above
5844 * 7 map to the same speed as level 7 in these models.
5845 * 2-0 fan level (0..7 usually)
5846 * 0x00 = stop
5847 * 0x07 = max (set when temperatures critical)
5848 * Some ThinkPads may have other levels, see
efa27145 5849 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 5850 *
5851 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
5852 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
5853 * does so, its initial value is meaningless (0x07).
5854 *
5855 * For firmware bugs, refer to:
5856 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5857 *
5858 * ----
5859 *
5860 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
5861 * Main fan tachometer reading (in RPM)
5862 *
5863 * This register is present on all ThinkPads with a new-style EC, and
5864 * it is known not to be present on the A21m/e, and T22, as there is
5865 * something else in offset 0x84 according to the ACPI DSDT. Other
5866 * ThinkPads from this same time period (and earlier) probably lack the
5867 * tachometer as well.
5868 *
5869 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
5870 * was never fixed by IBM to report the EC firmware version string
5871 * probably support the tachometer (like the early X models), so
5872 * detecting it is quite hard. We need more data to know for sure.
5873 *
5874 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
5875 * might result.
5876 *
f51d1a39
HMH		 5877 * FIRMWARE BUG: may go stale while the EC is switching to full speed
5878 * mode.
56b6aeb0
HMH		 5879 *
5880 * For firmware bugs, refer to:
5881 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5882 *
efa27145 5883 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 5884 * ThinkPad X31, X40, X41. Not available in the X60.
5885 *
5886 * FANS ACPI handle: takes three arguments: low speed, medium speed,
5887 * high speed. ACPI DSDT seems to map these three speeds to levels
5888 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
5889 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
5890 *
5891 * The speeds are stored on handles
5892 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
5893 *
5894 * There are three default speed sets, acessible as handles:
5895 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
5896 *
5897 * ACPI DSDT switches which set is in use depending on various
5898 * factors.
5899 *
efa27145 5900 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 5901 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
5902 * but the ACPI tables just mention level 7.
5903 */
5904
f74a27d4
HMH		 5905enum { /* Fan control constants */
5906 fan_status_offset = 0x2f, /* EC register 0x2f */
5907 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
5908 * 0x84 must be read before 0x85 */
5909
5910 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
5911 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
5912
5913 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
5914};
5915
5916enum fan_status_access_mode {
5917 TPACPI_FAN_NONE = 0, /* No fan status or control */
5918 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
5919 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
5920};
5921
5922enum fan_control_access_mode {
5923 TPACPI_FAN_WR_NONE = 0, /* No fan control */
5924 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
5925 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
5926 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
5927};
5928
5929enum fan_control_commands {
5930 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
5931 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
5932 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
5933 * and also watchdog cmd */
5934};
5935
5936static int fan_control_allowed;
5937
69ba91cb
HMH		 5938static enum fan_status_access_mode fan_status_access_mode;
5939static enum fan_control_access_mode fan_control_access_mode;
5940static enum fan_control_commands fan_control_commands;
78f81cc4 5941
778b4d74 5942static u8 fan_control_initial_status;
fe98a52c 5943static u8 fan_control_desired_level;
0081b162 5944static u8 fan_control_resume_level;
f74a27d4
HMH		 5945static int fan_watchdog_maxinterval;
5946
5947static struct mutex fan_mutex;
778b4d74 5948
25c68a33 5949static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 5950static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 5951
e0c7dfe7
HMH		 5952TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
5953TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 5954 "\\FSPD", /* 600e/x, 770e, 770x */
5955 ); /* all others */
e0c7dfe7 5956TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 5957 "JFNS", /* 770x-JL */
5958 ); /* all others */
5959
1c2ece75
HMH		 5960/*
5961 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
5962 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
5963 * be in auto mode (0x80).
5964 *
5965 * This is corrected by any write to HFSP either by the driver, or
5966 * by the firmware.
5967 *
5968 * We assume 0x07 really means auto mode while this quirk is active,
5969 * as this is far more likely than the ThinkPad being in level 7,
5970 * which is only used by the firmware during thermal emergencies.
5971 */
5972
5973static void fan_quirk1_detect(void)
5974{
5975 /* In some ThinkPads, neither the EC nor the ACPI
5976 * DSDT initialize the HFSP register, and it ends up
5977 * being initially set to 0x07 when it *could* be
5978 * either 0x07 or 0x80.
5979 *
5980 * Enable for TP-1Y (T43), TP-78 (R51e),
5981 * TP-76 (R52), TP-70 (T43, R52), which are known
5982 * to be buggy. */
5983 if (fan_control_initial_status == 0x07) {
5984 switch (thinkpad_id.ec_model) {
5985 case 0x5931: /* TP-1Y */
5986 case 0x3837: /* TP-78 */
5987 case 0x3637: /* TP-76 */
5988 case 0x3037: /* TP-70 */
5989 printk(TPACPI_NOTICE
5990 "fan_init: initial fan status is unknown, "
5991 "assuming it is in auto mode\n");
5992 tp_features.fan_ctrl_status_undef = 1;
5993 ;;
5994 }
5995 }
5996}
5997
5998static void fan_quirk1_handle(u8 *fan_status)
5999{
6000 if (unlikely(tp_features.fan_ctrl_status_undef)) {
6001 if (*fan_status != fan_control_initial_status) {
6002 /* something changed the HFSP regisnter since
6003 * driver init time, so it is not undefined
6004 * anymore */
6005 tp_features.fan_ctrl_status_undef = 0;
6006 } else {
6007 /* Return most likely status. In fact, it
6008 * might be the only possible status */
6009 *fan_status = TP_EC_FAN_AUTO;
6010 }
6011 }
6012}
6013
fe98a52c 6014/*
b21a15f6 6015 * Call with fan_mutex held
fe98a52c 6016 */
b21a15f6 6017static void fan_update_desired_level(u8 status)
fe98a52c 6018{
b21a15f6
HMH		 6019 if ((status &
6020 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6021 if (status > 7)
6022 fan_control_desired_level = 7;
6023 else
6024 fan_control_desired_level = status;
6025 }
6026}
fe98a52c 6027
b21a15f6
HMH		 6028static int fan_get_status(u8 *status)
6029{
6030 u8 s;
fe98a52c 6031
b21a15f6
HMH		 6032 /* TODO:
6033 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 6034
b21a15f6
HMH		 6035 switch (fan_status_access_mode) {
6036 case TPACPI_FAN_RD_ACPI_GFAN:
6037 /* 570, 600e/x, 770e, 770x */
fe98a52c 6038
b21a15f6
HMH		 6039 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
6040 return -EIO;
fe98a52c 6041
b21a15f6
HMH		 6042 if (likely(status))
6043 *status = s & 0x07;
fe98a52c 6044
b21a15f6
HMH		 6045 break;
6046
6047 case TPACPI_FAN_RD_TPEC:
6048 /* all except 570, 600e/x, 770e, 770x */
6049 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
6050 return -EIO;
6051
1c2ece75 6052 if (likely(status)) {
b21a15f6 6053 *status = s;
1c2ece75
HMH		 6054 fan_quirk1_handle(status);
6055 }
fe98a52c 6056
fe98a52c 6057 break;
b21a15f6 6058
fe98a52c 6059 default:
b21a15f6 6060 return -ENXIO;
fe98a52c
HMH		 6061 }
6062
b21a15f6
HMH		 6063 return 0;
6064}
fe98a52c 6065
b21a15f6
HMH		 6066static int fan_get_status_safe(u8 *status)
6067{
6068 int rc;
6069 u8 s;
fe98a52c 6070
7646ea88 6071 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 6072 return -ERESTARTSYS;
6073 rc = fan_get_status(&s);
6074 if (!rc)
6075 fan_update_desired_level(s);
6076 mutex_unlock(&fan_mutex);
fe98a52c 6077
b21a15f6
HMH		 6078 if (status)
6079 *status = s;
fe98a52c 6080
b21a15f6
HMH		 6081 return rc;
6082}
6083
6084static int fan_get_speed(unsigned int *speed)
fe98a52c 6085{
b21a15f6 6086 u8 hi, lo;
fe98a52c 6087
b21a15f6
HMH		 6088 switch (fan_status_access_mode) {
6089 case TPACPI_FAN_RD_TPEC:
6090 /* all except 570, 600e/x, 770e, 770x */
6091 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
6092 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
6093 return -EIO;
fe98a52c 6094
b21a15f6
HMH		 6095 if (likely(speed))
6096 *speed = (hi << 8) | lo;
fe98a52c 6097
b21a15f6 6098 break;
fe98a52c 6099
b21a15f6
HMH		 6100 default:
6101 return -ENXIO;
6102 }
fe98a52c 6103
b21a15f6 6104 return 0;
fe98a52c
HMH		 6105}
6106
b21a15f6 6107static int fan_set_level(int level)
fe98a52c 6108{
b21a15f6
HMH		 6109 if (!fan_control_allowed)
6110 return -EPERM;
fe98a52c 6111
b21a15f6
HMH		 6112 switch (fan_control_access_mode) {
6113 case TPACPI_FAN_WR_ACPI_SFAN:
6114 if (level >= 0 && level <= 7) {
6115 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
6116 return -EIO;
6117 } else
6118 return -EINVAL;
6119 break;
fe98a52c 6120
b21a15f6
HMH		 6121 case TPACPI_FAN_WR_ACPI_FANS:
6122 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 6123 if (!(level & TP_EC_FAN_AUTO) &&
6124 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 6125 ((level < 0) || (level > 7)))
6126 return -EINVAL;
fe98a52c 6127
b21a15f6
HMH		 6128 /* safety net should the EC not support AUTO
6129 * or FULLSPEED mode bits and just ignore them */
6130 if (level & TP_EC_FAN_FULLSPEED)
6131 level |= 7; /* safety min speed 7 */
547266e4 6132 else if (level & TP_EC_FAN_AUTO)
b21a15f6 6133 level |= 4; /* safety min speed 4 */
fe98a52c 6134
b21a15f6
HMH		 6135 if (!acpi_ec_write(fan_status_offset, level))
6136 return -EIO;
6137 else
6138 tp_features.fan_ctrl_status_undef = 0;
6139 break;
fe98a52c 6140
b21a15f6
HMH		 6141 default:
6142 return -ENXIO;
6143 }
6144 return 0;
fe98a52c
HMH		 6145}
6146
b21a15f6 6147static int fan_set_level_safe(int level)
fe98a52c 6148{
b21a15f6 6149 int rc;
fe98a52c 6150
b21a15f6
HMH		 6151 if (!fan_control_allowed)
6152 return -EPERM;
fe98a52c 6153
7646ea88 6154 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6155 return -ERESTARTSYS;
fe98a52c 6156
b21a15f6
HMH		 6157 if (level == TPACPI_FAN_LAST_LEVEL)
6158 level = fan_control_desired_level;
fe98a52c 6159
b21a15f6
HMH		 6160 rc = fan_set_level(level);
6161 if (!rc)
6162 fan_update_desired_level(level);
6163
6164 mutex_unlock(&fan_mutex);
6165 return rc;
fe98a52c
HMH		 6166}
6167
b21a15f6 6168static int fan_set_enable(void)
fe98a52c 6169{
b21a15f6
HMH		 6170 u8 s;
6171 int rc;
fe98a52c 6172
ecf2a80a
HMH		 6173 if (!fan_control_allowed)
6174 return -EPERM;
6175
7646ea88 6176 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6177 return -ERESTARTSYS;
fe98a52c 6178
b21a15f6
HMH		 6179 switch (fan_control_access_mode) {
6180 case TPACPI_FAN_WR_ACPI_FANS:
6181 case TPACPI_FAN_WR_TPEC:
6182 rc = fan_get_status(&s);
6183 if (rc < 0)
6184 break;
fe98a52c 6185
b21a15f6
HMH		 6186 /* Don't go out of emergency fan mode */
6187 if (s != 7) {
6188 s &= 0x07;
6189 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
6190 }
fe98a52c 6191
b21a15f6
HMH		 6192 if (!acpi_ec_write(fan_status_offset, s))
6193 rc = -EIO;
6194 else {
6195 tp_features.fan_ctrl_status_undef = 0;
6196 rc = 0;
6197 }
6198 break;
fe98a52c 6199
b21a15f6
HMH		 6200 case TPACPI_FAN_WR_ACPI_SFAN:
6201 rc = fan_get_status(&s);
6202 if (rc < 0)
6203 break;
fe98a52c 6204
b21a15f6 6205 s &= 0x07;
fe98a52c 6206
b21a15f6
HMH		 6207 /* Set fan to at least level 4 */
6208 s |= 4;
fe08bc4b 6209
b21a15f6 6210 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 6211 rc = -EIO;
b21a15f6
HMH		 6212 else
6213 rc = 0;
6214 break;
78f81cc4 6215
b21a15f6
HMH		 6216 default:
6217 rc = -ENXIO;
6218 }
5fba344c 6219
b21a15f6
HMH		 6220 mutex_unlock(&fan_mutex);
6221 return rc;
69ba91cb 6222}
78f81cc4 6223
b21a15f6 6224static int fan_set_disable(void)
78f81cc4 6225{
b21a15f6 6226 int rc;
c52f0aa5 6227
b21a15f6
HMH		 6228 if (!fan_control_allowed)
6229 return -EPERM;
78f81cc4 6230
7646ea88 6231 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6232 return -ERESTARTSYS;
3ef8a609 6233
b21a15f6
HMH		 6234 rc = 0;
6235 switch (fan_control_access_mode) {
6236 case TPACPI_FAN_WR_ACPI_FANS:
6237 case TPACPI_FAN_WR_TPEC:
6238 if (!acpi_ec_write(fan_status_offset, 0x00))
6239 rc = -EIO;
6240 else {
6241 fan_control_desired_level = 0;
6242 tp_features.fan_ctrl_status_undef = 0;
6243 }
3ef8a609
HMH		 6244 break;
6245
b21a15f6
HMH		 6246 case TPACPI_FAN_WR_ACPI_SFAN:
6247 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
6248 rc = -EIO;
6249 else
6250 fan_control_desired_level = 0;
c52f0aa5
HMH		 6251 break;
6252
6253 default:
b21a15f6 6254 rc = -ENXIO;
78f81cc4
BD		 6255 }
6256
fe98a52c 6257
fe98a52c 6258 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 6259 return rc;
6260}
6261
b21a15f6 6262static int fan_set_speed(int speed)
c52f0aa5 6263{
b21a15f6 6264 int rc;
c52f0aa5 6265
b21a15f6
HMH		 6266 if (!fan_control_allowed)
6267 return -EPERM;
3ef8a609 6268
7646ea88 6269 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6270 return -ERESTARTSYS;
c52f0aa5 6271
b21a15f6
HMH		 6272 rc = 0;
6273 switch (fan_control_access_mode) {
6274 case TPACPI_FAN_WR_ACPI_FANS:
6275 if (speed >= 0 && speed <= 65535) {
6276 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
6277 speed, speed, speed))
6278 rc = -EIO;
6279 } else
6280 rc = -EINVAL;
c52f0aa5
HMH		 6281 break;
6282
6283 default:
b21a15f6 6284 rc = -ENXIO;
c52f0aa5
HMH		 6285 }
6286
b21a15f6
HMH		 6287 mutex_unlock(&fan_mutex);
6288 return rc;
16663a87
HMH		 6289}
6290
6291static void fan_watchdog_reset(void)
6292{
94954cc6 6293 static int fan_watchdog_active;
16663a87 6294
4985cd0a
HMH		 6295 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
6296 return;
6297
16663a87
HMH		 6298 if (fan_watchdog_active)
6299 cancel_delayed_work(&fan_watchdog_task);
6300
8fef502e
HMH		 6301 if (fan_watchdog_maxinterval > 0 &&
6302 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87 6303 fan_watchdog_active = 1;
e0e3c061 6304 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
16663a87
HMH		 6305 msecs_to_jiffies(fan_watchdog_maxinterval
6306 * 1000))) {
35ff8b9f 6307 printk(TPACPI_ERR
e0e3c061 6308 "failed to queue the fan watchdog, "
16663a87
HMH		 6309 "watchdog will not trigger\n");
6310 }
6311 } else
6312 fan_watchdog_active = 0;
6313}
6314
b21a15f6 6315static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 6316{
b21a15f6 6317 int rc;
18ad7996 6318
b21a15f6
HMH		 6319 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
6320 return;
a12095c2 6321
e0c7dfe7 6322 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
b21a15f6
HMH		 6323 rc = fan_set_enable();
6324 if (rc < 0) {
e0c7dfe7 6325 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
b21a15f6
HMH		 6326 "will try again later...\n", -rc);
6327 /* reschedule for later */
6328 fan_watchdog_reset();
6329 }
6330}
eaa7571b 6331
b21a15f6
HMH		 6332/*
6333 * SYSFS fan layout: hwmon compatible (device)
6334 *
6335 * pwm*_enable:
6336 * 0: "disengaged" mode
6337 * 1: manual mode
6338 * 2: native EC "auto" mode (recommended, hardware default)
6339 *
6340 * pwm*: set speed in manual mode, ignored otherwise.
6341 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6342 * interpolation.
6343 *
6344 * fan*_input: tachometer reading, RPM
6345 *
6346 *
6347 * SYSFS fan layout: extensions
6348 *
6349 * fan_watchdog (driver):
6350 * fan watchdog interval in seconds, 0 disables (default), max 120
6351 */
6352
6353/* sysfs fan pwm1_enable ----------------------------------------------- */
6354static ssize_t fan_pwm1_enable_show(struct device *dev,
6355 struct device_attribute *attr,
6356 char *buf)
6357{
6358 int res, mode;
6359 u8 status;
6360
6361 res = fan_get_status_safe(&status);
6362 if (res)
6363 return res;
6364
b21a15f6
HMH		 6365 if (status & TP_EC_FAN_FULLSPEED) {
6366 mode = 0;
6367 } else if (status & TP_EC_FAN_AUTO) {
6368 mode = 2;
6369 } else
6370 mode = 1;
6371
6372 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
6373}
a12095c2 6374
b21a15f6
HMH		 6375static ssize_t fan_pwm1_enable_store(struct device *dev,
6376 struct device_attribute *attr,
6377 const char *buf, size_t count)
6378{
6379 unsigned long t;
6380 int res, level;
6381
6382 if (parse_strtoul(buf, 2, &t))
6383 return -EINVAL;
6384
6385 switch (t) {
6386 case 0:
6387 level = TP_EC_FAN_FULLSPEED;
6388 break;
6389 case 1:
6390 level = TPACPI_FAN_LAST_LEVEL;
6391 break;
6392 case 2:
6393 level = TP_EC_FAN_AUTO;
6394 break;
6395 case 3:
6396 /* reserved for software-controlled auto mode */
6397 return -ENOSYS;
18ad7996 6398 default:
b21a15f6 6399 return -EINVAL;
18ad7996 6400 }
b21a15f6
HMH		 6401
6402 res = fan_set_level_safe(level);
6403 if (res == -ENXIO)
6404 return -EINVAL;
6405 else if (res < 0)
6406 return res;
6407
6408 fan_watchdog_reset();
6409
6410 return count;
18ad7996
HMH		 6411}
6412
b21a15f6
HMH		 6413static struct device_attribute dev_attr_fan_pwm1_enable =
6414 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
6415 fan_pwm1_enable_show, fan_pwm1_enable_store);
6416
6417/* sysfs fan pwm1 ------------------------------------------------------ */
6418static ssize_t fan_pwm1_show(struct device *dev,
6419 struct device_attribute *attr,
6420 char *buf)
fe98a52c 6421{
b21a15f6
HMH		 6422 int res;
6423 u8 status;
fe98a52c 6424
b21a15f6
HMH		 6425 res = fan_get_status_safe(&status);
6426 if (res)
6427 return res;
ecf2a80a 6428
b21a15f6
HMH		 6429 if ((status &
6430 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
6431 status = fan_control_desired_level;
fe98a52c 6432
b21a15f6
HMH		 6433 if (status > 7)
6434 status = 7;
fe98a52c 6435
b21a15f6 6436 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 6437}
6438
b21a15f6
HMH		 6439static ssize_t fan_pwm1_store(struct device *dev,
6440 struct device_attribute *attr,
6441 const char *buf, size_t count)
18ad7996 6442{
b21a15f6 6443 unsigned long s;
1c6a334e 6444 int rc;
b21a15f6 6445 u8 status, newlevel;
1c6a334e 6446
b21a15f6
HMH		 6447 if (parse_strtoul(buf, 255, &s))
6448 return -EINVAL;
6449
6450 /* scale down from 0-255 to 0-7 */
6451 newlevel = (s >> 5) & 0x07;
ecf2a80a 6452
7646ea88 6453 if (mutex_lock_killable(&fan_mutex))
fc589a3c 6454 return -ERESTARTSYS;
40ca9fdf 6455
b21a15f6
HMH		 6456 rc = fan_get_status(&status);
6457 if (!rc && (status &
6458 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6459 rc = fan_set_level(newlevel);
6460 if (rc == -ENXIO)
6461 rc = -EINVAL;
6462 else if (!rc) {
6463 fan_update_desired_level(newlevel);
6464 fan_watchdog_reset();
eaa7571b 6465 }
b21a15f6 6466 }
1c6a334e 6467
b21a15f6
HMH		 6468 mutex_unlock(&fan_mutex);
6469 return (rc)? rc : count;
6470}
1c6a334e 6471
b21a15f6
HMH		 6472static struct device_attribute dev_attr_fan_pwm1 =
6473 __ATTR(pwm1, S_IWUSR | S_IRUGO,
6474 fan_pwm1_show, fan_pwm1_store);
1c6a334e 6475
b21a15f6
HMH		 6476/* sysfs fan fan1_input ------------------------------------------------ */
6477static ssize_t fan_fan1_input_show(struct device *dev,
6478 struct device_attribute *attr,
6479 char *buf)
6480{
6481 int res;
6482 unsigned int speed;
1c6a334e 6483
b21a15f6
HMH		 6484 res = fan_get_speed(&speed);
6485 if (res < 0)
6486 return res;
1c6a334e 6487
b21a15f6
HMH		 6488 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
6489}
18ad7996 6490
b21a15f6
HMH		 6491static struct device_attribute dev_attr_fan_fan1_input =
6492 __ATTR(fan1_input, S_IRUGO,
6493 fan_fan1_input_show, NULL);
40ca9fdf 6494
b21a15f6
HMH		 6495/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
6496static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
6497 char *buf)
6498{
6499 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 6500}
6501
b21a15f6
HMH		 6502static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
6503 const char *buf, size_t count)
18ad7996 6504{
b21a15f6
HMH		 6505 unsigned long t;
6506
6507 if (parse_strtoul(buf, 120, &t))
6508 return -EINVAL;
40ca9fdf 6509
ecf2a80a
HMH		 6510 if (!fan_control_allowed)
6511 return -EPERM;
6512
b21a15f6
HMH		 6513 fan_watchdog_maxinterval = t;
6514 fan_watchdog_reset();
40ca9fdf 6515
b21a15f6
HMH		 6516 return count;
6517}
6518
6519static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
6520 fan_fan_watchdog_show, fan_fan_watchdog_store);
6521
6522/* --------------------------------------------------------------------- */
6523static struct attribute *fan_attributes[] = {
6524 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
6525 &dev_attr_fan_fan1_input.attr,
6526 NULL
6527};
6528
6529static const struct attribute_group fan_attr_group = {
6530 .attrs = fan_attributes,
6531};
6532
6533static int __init fan_init(struct ibm_init_struct *iibm)
6534{
6535 int rc;
6536
6537 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
6538
6539 mutex_init(&fan_mutex);
6540 fan_status_access_mode = TPACPI_FAN_NONE;
6541 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6542 fan_control_commands = 0;
6543 fan_watchdog_maxinterval = 0;
6544 tp_features.fan_ctrl_status_undef = 0;
6545 fan_control_desired_level = 7;
6546
e0c7dfe7
HMH		 6547 TPACPI_ACPIHANDLE_INIT(fans);
6548 TPACPI_ACPIHANDLE_INIT(gfan);
6549 TPACPI_ACPIHANDLE_INIT(sfan);
b21a15f6
HMH		 6550
6551 if (gfan_handle) {
6552 /* 570, 600e/x, 770e, 770x */
6553 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
6554 } else {
6555 /* all other ThinkPads: note that even old-style
6556 * ThinkPad ECs supports the fan control register */
6557 if (likely(acpi_ec_read(fan_status_offset,
6558 &fan_control_initial_status))) {
6559 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
1c2ece75 6560 fan_quirk1_detect();
b21a15f6 6561 } else {
e0c7dfe7 6562 printk(TPACPI_ERR
b21a15f6
HMH		 6563 "ThinkPad ACPI EC access misbehaving, "
6564 "fan status and control unavailable\n");
6565 return 1;
6566 }
6567 }
6568
6569 if (sfan_handle) {
6570 /* 570, 770x-JL */
6571 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
6572 fan_control_commands |=
6573 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
6574 } else {
6575 if (!gfan_handle) {
6576 /* gfan without sfan means no fan control */
6577 /* all other models implement TP EC 0x2f control */
6578
6579 if (fans_handle) {
6580 /* X31, X40, X41 */
6581 fan_control_access_mode =
6582 TPACPI_FAN_WR_ACPI_FANS;
6583 fan_control_commands |=
6584 TPACPI_FAN_CMD_SPEED |
6585 TPACPI_FAN_CMD_LEVEL |
6586 TPACPI_FAN_CMD_ENABLE;
6587 } else {
6588 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
6589 fan_control_commands |=
6590 TPACPI_FAN_CMD_LEVEL |
6591 TPACPI_FAN_CMD_ENABLE;
6592 }
fe98a52c 6593 }
b21a15f6 6594 }
18ad7996 6595
b21a15f6
HMH		 6596 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
6597 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
6598 fan_control_access_mode != TPACPI_FAN_WR_NONE),
6599 fan_status_access_mode, fan_control_access_mode);
1c6a334e 6600
b21a15f6
HMH		 6601 /* fan control master switch */
6602 if (!fan_control_allowed) {
6603 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6604 fan_control_commands = 0;
6605 dbg_printk(TPACPI_DBG_INIT,
6606 "fan control features disabled by parameter\n");
18ad7996 6607 }
40ca9fdf 6608
b21a15f6
HMH		 6609 /* update fan_control_desired_level */
6610 if (fan_status_access_mode != TPACPI_FAN_NONE)
6611 fan_get_status_safe(NULL);
fe98a52c 6612
b21a15f6
HMH		 6613 if (fan_status_access_mode != TPACPI_FAN_NONE ||
6614 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
6615 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
6616 &fan_attr_group);
b21a15f6
HMH		 6617 if (rc < 0)
6618 return rc;
9c0a76e1
HMH		 6619
6620 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
6621 &driver_attr_fan_watchdog);
6622 if (rc < 0) {
6623 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
6624 &fan_attr_group);
6625 return rc;
6626 }
b21a15f6
HMH		 6627 return 0;
6628 } else
6629 return 1;
56b6aeb0
HMH		 6630}
6631
b21a15f6 6632static void fan_exit(void)
56b6aeb0 6633{
35ff8b9f
HMH		 6634 vdbg_printk(TPACPI_DBG_EXIT,
6635 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 6636
b21a15f6
HMH		 6637 /* FIXME: can we really do this unconditionally? */
6638 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 6639 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
6640 &driver_attr_fan_watchdog);
40ca9fdf 6641
b21a15f6 6642 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 6643 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 6644}
6645
75700e53
HMH		 6646static void fan_suspend(pm_message_t state)
6647{
0081b162
HMH		 6648 int rc;
6649
75700e53
HMH		 6650 if (!fan_control_allowed)
6651 return;
6652
6653 /* Store fan status in cache */
0081b162
HMH		 6654 fan_control_resume_level = 0;
6655 rc = fan_get_status_safe(&fan_control_resume_level);
6656 if (rc < 0)
6657 printk(TPACPI_NOTICE
6658 "failed to read fan level for later "
6659 "restore during resume: %d\n", rc);
6660
6661 /* if it is undefined, don't attempt to restore it.
6662 * KEEP THIS LAST */
75700e53 6663 if (tp_features.fan_ctrl_status_undef)
0081b162 6664 fan_control_resume_level = 0;
75700e53
HMH		 6665}
6666
6667static void fan_resume(void)
6668{
75700e53
HMH		 6669 u8 current_level = 7;
6670 bool do_set = false;
0081b162 6671 int rc;
75700e53
HMH		 6672
6673 /* DSDT *always* updates status on resume */
6674 tp_features.fan_ctrl_status_undef = 0;
6675
75700e53 6676 if (!fan_control_allowed ||
0081b162 6677 !fan_control_resume_level ||
75700e53
HMH		 6678 (fan_get_status_safe(&current_level) < 0))
6679 return;
6680
6681 switch (fan_control_access_mode) {
6682 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 6683 /* never decrease fan level */
6684 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 6685 break;
6686 case TPACPI_FAN_WR_ACPI_FANS:
6687 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 6688 /* never decrease fan level, scale is:
6689 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
6690 *
6691 * We expect the firmware to set either 7 or AUTO, but we
6692 * handle FULLSPEED out of paranoia.
6693 *
6694 * So, we can safely only restore FULLSPEED or 7, anything
6695 * else could slow the fan. Restoring AUTO is useless, at
6696 * best that's exactly what the DSDT already set (it is the
6697 * slower it uses).
6698 *
6699 * Always keep in mind that the DSDT *will* have set the
6700 * fans to what the vendor supposes is the best level. We
6701 * muck with it only to speed the fan up.
6702 */
6703 if (fan_control_resume_level != 7 &&
6704 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
6705 return;
6706 else
6707 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
6708 (current_level != fan_control_resume_level);
75700e53
HMH		 6709 break;
6710 default:
6711 return;
6712 }
6713 if (do_set) {
6714 printk(TPACPI_NOTICE
6715 "restoring fan level to 0x%02x\n",
0081b162
HMH		 6716 fan_control_resume_level);
6717 rc = fan_set_level_safe(fan_control_resume_level);
6718 if (rc < 0)
6719 printk(TPACPI_NOTICE
6720 "failed to restore fan level: %d\n", rc);
75700e53
HMH		 6721 }
6722}
6723
56b6aeb0
HMH		 6724static int fan_read(char *p)
6725{
6726 int len = 0;
6727 int rc;
6728 u8 status;
6729 unsigned int speed = 0;
6730
6731 switch (fan_status_access_mode) {
efa27145 6732 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 6733 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 6734 rc = fan_get_status_safe(&status);
6735 if (rc < 0)
56b6aeb0
HMH		 6736 return rc;
6737
6738 len += sprintf(p + len, "status:\t\t%s\n"
6739 "level:\t\t%d\n",
6740 (status != 0) ? "enabled" : "disabled", status);
6741 break;
6742
efa27145 6743 case TPACPI_FAN_RD_TPEC:
56b6aeb0 6744 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 6745 rc = fan_get_status_safe(&status);
6746 if (rc < 0)
56b6aeb0
HMH		 6747 return rc;
6748
56b6aeb0
HMH		 6749 len += sprintf(p + len, "status:\t\t%s\n",
6750 (status != 0) ? "enabled" : "disabled");
6751
35ff8b9f
HMH		 6752 rc = fan_get_speed(&speed);
6753 if (rc < 0)
56b6aeb0
HMH		 6754 return rc;
6755
6756 len += sprintf(p + len, "speed:\t\t%d\n", speed);
6757
efa27145 6758 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 6759 /* Disengaged mode takes precedence */
6760 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 6761 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 6762 len += sprintf(p + len, "level:\t\tauto\n");
6763 else
6764 len += sprintf(p + len, "level:\t\t%d\n", status);
6765 break;
6766
efa27145 6767 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 6768 default:
6769 len += sprintf(p + len, "status:\t\tnot supported\n");
6770 }
6771
efa27145 6772 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 6773 len += sprintf(p + len, "commands:\tlevel <level>");
6774
6775 switch (fan_control_access_mode) {
efa27145 6776 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 6777 len += sprintf(p + len, " (<level> is 0-7)\n");
6778 break;
6779
6780 default:
6781 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 6782 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 6783 break;
6784 }
6785 }
18ad7996 6786
efa27145 6787 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0 6788 len += sprintf(p + len, "commands:\tenable, disable\n"
35ff8b9f
HMH		 6789 "commands:\twatchdog <timeout> (<timeout> "
6790 "is 0 (off), 1-120 (seconds))\n");
1da177e4 6791
efa27145 6792 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 6793 len += sprintf(p + len, "commands:\tspeed <speed>"
6794 " (<speed> is 0-65535)\n");
6795
6796 return len;
78f81cc4
BD		 6797}
6798
18ad7996
HMH		 6799static int fan_write_cmd_level(const char *cmd, int *rc)
6800{
6801 int level;
6802
a12095c2 6803 if (strlencmp(cmd, "level auto") == 0)
efa27145 6804 level = TP_EC_FAN_AUTO;
fe98a52c 6805 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 6806 (strlencmp(cmd, "level full-speed") == 0))
efa27145 6807 level = TP_EC_FAN_FULLSPEED;
a12095c2 6808 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 6809 return 0;
6810
35ff8b9f
HMH		 6811 *rc = fan_set_level_safe(level);
6812 if (*rc == -ENXIO)
e0c7dfe7 6813 printk(TPACPI_ERR "level command accepted for unsupported "
18ad7996
HMH		 6814 "access mode %d", fan_control_access_mode);
6815
6816 return 1;
6817}
6818
6819static int fan_write_cmd_enable(const char *cmd, int *rc)
6820{
6821 if (strlencmp(cmd, "enable") != 0)
6822 return 0;
6823
35ff8b9f
HMH		 6824 *rc = fan_set_enable();
6825 if (*rc == -ENXIO)
e0c7dfe7 6826 printk(TPACPI_ERR "enable command accepted for unsupported "
18ad7996
HMH		 6827 "access mode %d", fan_control_access_mode);
6828
6829 return 1;
6830}
6831
6832static int fan_write_cmd_disable(const char *cmd, int *rc)
6833{
6834 if (strlencmp(cmd, "disable") != 0)
6835 return 0;
6836
35ff8b9f
HMH		 6837 *rc = fan_set_disable();
6838 if (*rc == -ENXIO)
e0c7dfe7 6839 printk(TPACPI_ERR "disable command accepted for unsupported "
18ad7996
HMH		 6840 "access mode %d", fan_control_access_mode);
6841
6842 return 1;
6843}
6844
6845static int fan_write_cmd_speed(const char *cmd, int *rc)
6846{
6847 int speed;
6848
a8b7a662
HMH		 6849 /* TODO:
6850 * Support speed <low> <medium> <high> ? */
6851
18ad7996
HMH		 6852 if (sscanf(cmd, "speed %d", &speed) != 1)
6853 return 0;
6854
35ff8b9f
HMH		 6855 *rc = fan_set_speed(speed);
6856 if (*rc == -ENXIO)
e0c7dfe7 6857 printk(TPACPI_ERR "speed command accepted for unsupported "
18ad7996
HMH		 6858 "access mode %d", fan_control_access_mode);
6859
6860 return 1;
6861}
6862
16663a87
HMH		 6863static int fan_write_cmd_watchdog(const char *cmd, int *rc)
6864{
6865 int interval;
6866
6867 if (sscanf(cmd, "watchdog %d", &interval) != 1)
6868 return 0;
6869
6870 if (interval < 0 || interval > 120)
6871 *rc = -EINVAL;
6872 else
6873 fan_watchdog_maxinterval = interval;
6874
6875 return 1;
6876}
6877
18ad7996
HMH		 6878static int fan_write(char *buf)
6879{
6880 char *cmd;
6881 int rc = 0;
6882
6883 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 6884 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 6885 fan_write_cmd_level(cmd, &rc)) &&
efa27145 6886 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 6887 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 6888 fan_write_cmd_disable(cmd, &rc) ||
6889 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 6890 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 6891 fan_write_cmd_speed(cmd, &rc))
6892 )
6893 rc = -EINVAL;
16663a87
HMH		 6894 else if (!rc)
6895 fan_watchdog_reset();
18ad7996
HMH		 6896 }
6897
6898 return rc;
6899}
6900
a5763f22
HMH		 6901static struct ibm_struct fan_driver_data = {
6902 .name = "fan",
6903 .read = fan_read,
6904 .write = fan_write,
6905 .exit = fan_exit,
75700e53
HMH		 6906 .suspend = fan_suspend,
6907 .resume = fan_resume,
a5763f22
HMH		 6908};
6909
56b6aeb0
HMH		 6910/****************************************************************************
6911 ****************************************************************************
6912 *
6913 * Infrastructure
6914 *
6915 ****************************************************************************
6916 ****************************************************************************/
6917
7fd40029
HMH		 6918/* sysfs name ---------------------------------------------------------- */
6919static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
6920 struct device_attribute *attr,
6921 char *buf)
6922{
e0c7dfe7 6923 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 6924}
6925
6926static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
6927 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
6928
6929/* --------------------------------------------------------------------- */
6930
56b6aeb0 6931/* /proc support */
94954cc6 6932static struct proc_dir_entry *proc_dir;
16663a87 6933
56b6aeb0
HMH		 6934/*
6935 * Module and infrastructure proble, init and exit handling
6936 */
1da177e4 6937
b21a15f6
HMH		 6938static int force_load;
6939
fe08bc4b 6940#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 6941static const char * __init str_supported(int is_supported)
fe08bc4b 6942{
a5763f22 6943 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 6944
a5763f22 6945 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 6946}
6947#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
6948
b21a15f6
HMH		 6949static void ibm_exit(struct ibm_struct *ibm)
6950{
6951 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
6952
6953 list_del_init(&ibm->all_drivers);
6954
6955 if (ibm->flags.acpi_notify_installed) {
6956 dbg_printk(TPACPI_DBG_EXIT,
6957 "%s: acpi_remove_notify_handler\n", ibm->name);
6958 BUG_ON(!ibm->acpi);
6959 acpi_remove_notify_handler(*ibm->acpi->handle,
6960 ibm->acpi->type,
6961 dispatch_acpi_notify);
6962 ibm->flags.acpi_notify_installed = 0;
6963 ibm->flags.acpi_notify_installed = 0;
6964 }
6965
6966 if (ibm->flags.proc_created) {
6967 dbg_printk(TPACPI_DBG_EXIT,
6968 "%s: remove_proc_entry\n", ibm->name);
6969 remove_proc_entry(ibm->name, proc_dir);
6970 ibm->flags.proc_created = 0;
6971 }
6972
6973 if (ibm->flags.acpi_driver_registered) {
6974 dbg_printk(TPACPI_DBG_EXIT,
6975 "%s: acpi_bus_unregister_driver\n", ibm->name);
6976 BUG_ON(!ibm->acpi);
6977 acpi_bus_unregister_driver(ibm->acpi->driver);
6978 kfree(ibm->acpi->driver);
6979 ibm->acpi->driver = NULL;
6980 ibm->flags.acpi_driver_registered = 0;
6981 }
6982
6983 if (ibm->flags.init_called && ibm->exit) {
6984 ibm->exit();
6985 ibm->flags.init_called = 0;
6986 }
6987
6988 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
6989}
f74a27d4 6990
a5763f22 6991static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 6992{
6993 int ret;
a5763f22 6994 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 6995 struct proc_dir_entry *entry;
6996
a5763f22
HMH		 6997 BUG_ON(ibm == NULL);
6998
6999 INIT_LIST_HEAD(&ibm->all_drivers);
7000
92641177 7001 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 7002 return 0;
7003
fe08bc4b
HMH		 7004 dbg_printk(TPACPI_DBG_INIT,
7005 "probing for %s\n", ibm->name);
7006
a5763f22
HMH		 7007 if (iibm->init) {
7008 ret = iibm->init(iibm);
5fba344c
HMH		 7009 if (ret > 0)
7010 return 0; /* probe failed */
7011 if (ret)
1da177e4 7012 return ret;
a5763f22 7013
92641177 7014 ibm->flags.init_called = 1;
1da177e4
LT		 7015 }
7016
8d376cd6
HMH		 7017 if (ibm->acpi) {
7018 if (ibm->acpi->hid) {
7019 ret = register_tpacpi_subdriver(ibm);
7020 if (ret)
7021 goto err_out;
7022 }
5fba344c 7023
8d376cd6
HMH		 7024 if (ibm->acpi->notify) {
7025 ret = setup_acpi_notify(ibm);
7026 if (ret == -ENODEV) {
e0c7dfe7 7027 printk(TPACPI_NOTICE "disabling subdriver %s\n",
8d376cd6
HMH		 7028 ibm->name);
7029 ret = 0;
7030 goto err_out;
7031 }
7032 if (ret < 0)
7033 goto err_out;
5fba344c 7034 }
5fba344c
HMH		 7035 }
7036
fe08bc4b
HMH		 7037 dbg_printk(TPACPI_DBG_INIT,
7038 "%s installed\n", ibm->name);
7039
78f81cc4
BD		 7040 if (ibm->read) {
7041 entry = create_proc_entry(ibm->name,
7042 S_IFREG | S_IRUGO | S_IWUSR,
7043 proc_dir);
7044 if (!entry) {
e0c7dfe7 7045 printk(TPACPI_ERR "unable to create proc entry %s\n",
78f81cc4 7046 ibm->name);
5fba344c
HMH		 7047 ret = -ENODEV;
7048 goto err_out;
78f81cc4
BD		 7049 }
7050 entry->owner = THIS_MODULE;
7051 entry->data = ibm;
8d376cd6 7052 entry->read_proc = &dispatch_procfs_read;
78f81cc4 7053 if (ibm->write)
8d376cd6 7054 entry->write_proc = &dispatch_procfs_write;
92641177 7055 ibm->flags.proc_created = 1;
78f81cc4 7056 }
1da177e4 7057
a5763f22
HMH		 7058 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
7059
1da177e4 7060 return 0;
5fba344c
HMH		 7061
7062err_out:
fe08bc4b
HMH		 7063 dbg_printk(TPACPI_DBG_INIT,
7064 "%s: at error exit path with result %d\n",
7065 ibm->name, ret);
7066
5fba344c
HMH		 7067 ibm_exit(ibm);
7068 return (ret < 0)? ret : 0;
1da177e4
LT		 7069}
7070
56b6aeb0
HMH		 7071/* Probing */
7072
bf20e740
HMH		 7073/* returns 0 - probe ok, or < 0 - probe error.
7074 * Probe ok doesn't mean thinkpad found.
7075 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7076static int __must_check __init get_thinkpad_model_data(
7077 struct thinkpad_id_data *tp)
1da177e4 7078{
1855256c 7079 const struct dmi_device *dev = NULL;
56b6aeb0 7080 char ec_fw_string[18];
bf20e740 7081 char const *s;
1da177e4 7082
d5a2f2f1 7083 if (!tp)
bf20e740 7084 return -EINVAL;
d5a2f2f1
HMH		 7085
7086 memset(tp, 0, sizeof(*tp));
7087
7088 if (dmi_name_in_vendors("IBM"))
7089 tp->vendor = PCI_VENDOR_ID_IBM;
7090 else if (dmi_name_in_vendors("LENOVO"))
7091 tp->vendor = PCI_VENDOR_ID_LENOVO;
7092 else
bf20e740 7093 return 0;
d5a2f2f1 7094
bf20e740
HMH		 7095 s = dmi_get_system_info(DMI_BIOS_VERSION);
7096 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
7097 if (s && !tp->bios_version_str)
7098 return -ENOMEM;
d5a2f2f1 7099 if (!tp->bios_version_str)
bf20e740 7100 return 0;
d5a2f2f1
HMH		 7101 tp->bios_model = tp->bios_version_str[0]
7102 | (tp->bios_version_str[1] << 8);
7103
56b6aeb0
HMH		 7104 /*
7105 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7106 * X32 or newer, all Z series; Some models must have an
7107 * up-to-date BIOS or they will not be detected.
7108 *
7109 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7110 */
7111 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
7112 if (sscanf(dev->name,
7113 "IBM ThinkPad Embedded Controller -[%17c",
7114 ec_fw_string) == 1) {
7115 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
7116 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 7117
7118 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 7119 if (!tp->ec_version_str)
7120 return -ENOMEM;
d5a2f2f1
HMH		 7121 tp->ec_model = ec_fw_string[0]
7122 | (ec_fw_string[1] << 8);
7123 break;
78f81cc4 7124 }
1da177e4 7125 }
d5a2f2f1 7126
bf20e740
HMH		 7127 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
7128 if (s && !strnicmp(s, "ThinkPad", 8)) {
7129 tp->model_str = kstrdup(s, GFP_KERNEL);
7130 if (!tp->model_str)
7131 return -ENOMEM;
d5a2f2f1 7132 }
8c74adbc 7133
bf20e740
HMH		 7134 s = dmi_get_system_info(DMI_PRODUCT_NAME);
7135 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
7136 if (s && !tp->nummodel_str)
7137 return -ENOMEM;
7138
7139 return 0;
1da177e4
LT		 7140}
7141
5fba344c
HMH		 7142static int __init probe_for_thinkpad(void)
7143{
7144 int is_thinkpad;
7145
7146 if (acpi_disabled)
7147 return -ENODEV;
7148
7149 /*
7150 * Non-ancient models have better DMI tagging, but very old models
7151 * don't.
7152 */
d5a2f2f1 7153 is_thinkpad = (thinkpad_id.model_str != NULL);
5fba344c
HMH		 7154
7155 /* ec is required because many other handles are relative to it */
e0c7dfe7 7156 TPACPI_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 7157 if (!ec_handle) {
7158 if (is_thinkpad)
e0c7dfe7 7159 printk(TPACPI_ERR
5fba344c
HMH		 7160 "Not yet supported ThinkPad detected!\n");
7161 return -ENODEV;
7162 }
7163
0dcef77c
HMH		 7164 /*
7165 * Risks a regression on very old machines, but reduces potential
7166 * false positives a damn great deal
7167 */
7168 if (!is_thinkpad)
d5a2f2f1 7169 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
0dcef77c
HMH		 7170
7171 if (!is_thinkpad && !force_load)
7172 return -ENODEV;
7173
5fba344c
HMH		 7174 return 0;
7175}
7176
7177
56b6aeb0 7178/* Module init, exit, parameters */
1da177e4 7179
a5763f22
HMH		 7180static struct ibm_init_struct ibms_init[] __initdata = {
7181 {
7182 .init = thinkpad_acpi_driver_init,
7183 .data = &thinkpad_acpi_driver_data,
7184 },
7185 {
7186 .init = hotkey_init,
7187 .data = &hotkey_driver_data,
7188 },
7189 {
7190 .init = bluetooth_init,
7191 .data = &bluetooth_driver_data,
7192 },
7193 {
7194 .init = wan_init,
7195 .data = &wan_driver_data,
7196 },
0045c0aa
HMH		 7197 {
7198 .init = uwb_init,
7199 .data = &uwb_driver_data,
7200 },
d7c1d17d 7201#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 7202 {
7203 .init = video_init,
7204 .data = &video_driver_data,
7205 },
d7c1d17d 7206#endif
a5763f22
HMH		 7207 {
7208 .init = light_init,
7209 .data = &light_driver_data,
7210 },
7211#ifdef CONFIG_THINKPAD_ACPI_DOCK
7212 {
7213 .init = dock_init,
7214 .data = &dock_driver_data[0],
7215 },
7216 {
d94a7f16 7217 .init = dock_init2,
a5763f22
HMH		 7218 .data = &dock_driver_data[1],
7219 },
7220#endif
7221#ifdef CONFIG_THINKPAD_ACPI_BAY
7222 {
7223 .init = bay_init,
7224 .data = &bay_driver_data,
7225 },
7226#endif
7227 {
7228 .init = cmos_init,
7229 .data = &cmos_driver_data,
7230 },
7231 {
7232 .init = led_init,
7233 .data = &led_driver_data,
7234 },
7235 {
7236 .init = beep_init,
7237 .data = &beep_driver_data,
7238 },
7239 {
7240 .init = thermal_init,
7241 .data = &thermal_driver_data,
7242 },
7243 {
7244 .data = &ecdump_driver_data,
7245 },
7246 {
7247 .init = brightness_init,
7248 .data = &brightness_driver_data,
7249 },
7250 {
7251 .data = &volume_driver_data,
7252 },
7253 {
7254 .init = fan_init,
7255 .data = &fan_driver_data,
7256 },
7257};
7258
3945ac36 7259static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 7260{
7261 unsigned int i;
a5763f22 7262 struct ibm_struct *ibm;
1da177e4 7263
59f91ff1
HMH		 7264 if (!kp || !kp->name || !val)
7265 return -EINVAL;
7266
a5763f22
HMH		 7267 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7268 ibm = ibms_init[i].data;
59f91ff1
HMH		 7269 WARN_ON(ibm == NULL);
7270
7271 if (!ibm || !ibm->name)
7272 continue;
a5763f22
HMH		 7273
7274 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
7275 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 7276 return -ENOSPC;
a5763f22
HMH		 7277 strcpy(ibms_init[i].param, val);
7278 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 7279 return 0;
7280 }
a5763f22 7281 }
1da177e4 7282
1da177e4
LT		 7283 return -EINVAL;
7284}
7285
56b6aeb0 7286module_param(experimental, int, 0);
f68080f8 7287MODULE_PARM_DESC(experimental,
35ff8b9f 7288 "Enables experimental features when non-zero");
56b6aeb0 7289
132ce091 7290module_param_named(debug, dbg_level, uint, 0);
f68080f8 7291MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 7292
86cc9445 7293module_param(force_load, bool, 0);
f68080f8 7294MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 7295 "Attempts to load the driver even on a "
7296 "mis-identified ThinkPad when true");
0dcef77c 7297
86cc9445 7298module_param_named(fan_control, fan_control_allowed, bool, 0);
f68080f8 7299MODULE_PARM_DESC(fan_control,
35ff8b9f 7300 "Enables setting fan parameters features when true");
ecf2a80a 7301
24d3b774 7302module_param_named(brightness_mode, brightness_mode, int, 0);
f68080f8 7303MODULE_PARM_DESC(brightness_mode,
35ff8b9f
HMH		 7304 "Selects brightness control strategy: "
7305 "0=auto, 1=EC, 2=CMOS, 3=both");
24d3b774 7306
87cc537a 7307module_param(brightness_enable, uint, 0);
f68080f8 7308MODULE_PARM_DESC(brightness_enable,
35ff8b9f 7309 "Enables backlight control when 1, disables when 0");
87cc537a 7310
ff80f137 7311module_param(hotkey_report_mode, uint, 0);
f68080f8 7312MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 7313 "used for backwards compatibility with userspace, "
7314 "see documentation");
ff80f137 7315
e0c7dfe7 7316#define TPACPI_PARAM(feature) \
f68080f8 7317 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 7318 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 7319 "at module load, see documentation")
1da177e4 7320
e0c7dfe7
HMH		 7321TPACPI_PARAM(hotkey);
7322TPACPI_PARAM(bluetooth);
7323TPACPI_PARAM(video);
7324TPACPI_PARAM(light);
85998248 7325#ifdef CONFIG_THINKPAD_ACPI_DOCK
e0c7dfe7 7326TPACPI_PARAM(dock);
63e5f248 7327#endif
85998248 7328#ifdef CONFIG_THINKPAD_ACPI_BAY
e0c7dfe7 7329TPACPI_PARAM(bay);
85998248 7330#endif /* CONFIG_THINKPAD_ACPI_BAY */
e0c7dfe7
HMH		 7331TPACPI_PARAM(cmos);
7332TPACPI_PARAM(led);
7333TPACPI_PARAM(beep);
7334TPACPI_PARAM(ecdump);
7335TPACPI_PARAM(brightness);
7336TPACPI_PARAM(volume);
7337TPACPI_PARAM(fan);
78f81cc4 7338
a73f3091
HMH		 7339#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7340module_param(dbg_wlswemul, uint, 0);
7341MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
7342module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
7343MODULE_PARM_DESC(wlsw_state,
7344 "Initial state of the emulated WLSW switch");
7345
7346module_param(dbg_bluetoothemul, uint, 0);
7347MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
7348module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
7349MODULE_PARM_DESC(bluetooth_state,
7350 "Initial state of the emulated bluetooth switch");
7351
7352module_param(dbg_wwanemul, uint, 0);
7353MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
7354module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
7355MODULE_PARM_DESC(wwan_state,
7356 "Initial state of the emulated WWAN switch");
0045c0aa
HMH		 7357
7358module_param(dbg_uwbemul, uint, 0);
7359MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
7360module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
7361MODULE_PARM_DESC(uwb_state,
7362 "Initial state of the emulated UWB switch");
a73f3091
HMH		 7363#endif
7364
b21a15f6
HMH		 7365static void thinkpad_acpi_module_exit(void)
7366{
7367 struct ibm_struct *ibm, *itmp;
7368
7369 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
7370
7371 list_for_each_entry_safe_reverse(ibm, itmp,
7372 &tpacpi_all_drivers,
7373 all_drivers) {
7374 ibm_exit(ibm);
7375 }
7376
7377 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
7378
7379 if (tpacpi_inputdev) {
7380 if (tp_features.input_device_registered)
7381 input_unregister_device(tpacpi_inputdev);
7382 else
7383 input_free_device(tpacpi_inputdev);
7384 }
7385
7386 if (tpacpi_hwmon)
7387 hwmon_device_unregister(tpacpi_hwmon);
7388
7389 if (tp_features.sensors_pdev_attrs_registered)
7390 device_remove_file(&tpacpi_sensors_pdev->dev,
7391 &dev_attr_thinkpad_acpi_pdev_name);
7392 if (tpacpi_sensors_pdev)
7393 platform_device_unregister(tpacpi_sensors_pdev);
7394 if (tpacpi_pdev)
7395 platform_device_unregister(tpacpi_pdev);
7396
7397 if (tp_features.sensors_pdrv_attrs_registered)
7398 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
7399 if (tp_features.platform_drv_attrs_registered)
7400 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
7401
7402 if (tp_features.sensors_pdrv_registered)
7403 platform_driver_unregister(&tpacpi_hwmon_pdriver);
7404
7405 if (tp_features.platform_drv_registered)
7406 platform_driver_unregister(&tpacpi_pdriver);
7407
7408 if (proc_dir)
e0c7dfe7 7409 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 7410
e0e3c061
HMH		 7411 if (tpacpi_wq)
7412 destroy_workqueue(tpacpi_wq);
7413
b21a15f6
HMH		 7414 kfree(thinkpad_id.bios_version_str);
7415 kfree(thinkpad_id.ec_version_str);
7416 kfree(thinkpad_id.model_str);
7417}
7418
f74a27d4 7419
1def7115 7420static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 7421{
7422 int ret, i;
7423
8fef502e
HMH		 7424 tpacpi_lifecycle = TPACPI_LIFE_INIT;
7425
ff80f137
HMH		 7426 /* Parameter checking */
7427 if (hotkey_report_mode > 2)
7428 return -EINVAL;
7429
54ae1501 7430 /* Driver-level probe */
d5a2f2f1 7431
bf20e740
HMH		 7432 ret = get_thinkpad_model_data(&thinkpad_id);
7433 if (ret) {
7434 printk(TPACPI_ERR
7435 "unable to get DMI data: %d\n", ret);
7436 thinkpad_acpi_module_exit();
7437 return ret;
7438 }
5fba344c 7439 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 7440 if (ret) {
7441 thinkpad_acpi_module_exit();
5fba344c 7442 return ret;
d5a2f2f1 7443 }
1da177e4 7444
54ae1501 7445 /* Driver initialization */
d5a2f2f1 7446
e0c7dfe7
HMH		 7447 TPACPI_ACPIHANDLE_INIT(ecrd);
7448 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 7449
e0e3c061
HMH		 7450 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
7451 if (!tpacpi_wq) {
7452 thinkpad_acpi_module_exit();
7453 return -ENOMEM;
7454 }
7455
e0c7dfe7 7456 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 7457 if (!proc_dir) {
35ff8b9f
HMH		 7458 printk(TPACPI_ERR
7459 "unable to create proc dir " TPACPI_PROC_DIR);
1def7115 7460 thinkpad_acpi_module_exit();
1da177e4
LT		 7461 return -ENODEV;
7462 }
7463 proc_dir->owner = THIS_MODULE;
78f81cc4 7464
54ae1501
HMH		 7465 ret = platform_driver_register(&tpacpi_pdriver);
7466 if (ret) {
35ff8b9f
HMH		 7467 printk(TPACPI_ERR
7468 "unable to register main platform driver\n");
54ae1501
HMH		 7469 thinkpad_acpi_module_exit();
7470 return ret;
7471 }
ac36393d
HMH		 7472 tp_features.platform_drv_registered = 1;
7473
7fd40029
HMH		 7474 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
7475 if (ret) {
35ff8b9f
HMH		 7476 printk(TPACPI_ERR
7477 "unable to register hwmon platform driver\n");
7fd40029
HMH		 7478 thinkpad_acpi_module_exit();
7479 return ret;
7480 }
7481 tp_features.sensors_pdrv_registered = 1;
7482
176750d6 7483 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 7484 if (!ret) {
7485 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 7486 ret = tpacpi_create_driver_attributes(
7487 &tpacpi_hwmon_pdriver.driver);
2369cc94 7488 }
176750d6 7489 if (ret) {
35ff8b9f
HMH		 7490 printk(TPACPI_ERR
7491 "unable to create sysfs driver attributes\n");
176750d6
HMH		 7492 thinkpad_acpi_module_exit();
7493 return ret;
7494 }
2369cc94 7495 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 7496
54ae1501
HMH		 7497
7498 /* Device initialization */
e0c7dfe7 7499 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 7500 NULL, 0);
7501 if (IS_ERR(tpacpi_pdev)) {
7502 ret = PTR_ERR(tpacpi_pdev);
7503 tpacpi_pdev = NULL;
e0c7dfe7 7504 printk(TPACPI_ERR "unable to register platform device\n");
54ae1501
HMH		 7505 thinkpad_acpi_module_exit();
7506 return ret;
7507 }
7fd40029 7508 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 7509 TPACPI_HWMON_DRVR_NAME,
7510 -1, NULL, 0);
7fd40029
HMH		 7511 if (IS_ERR(tpacpi_sensors_pdev)) {
7512 ret = PTR_ERR(tpacpi_sensors_pdev);
7513 tpacpi_sensors_pdev = NULL;
35ff8b9f
HMH		 7514 printk(TPACPI_ERR
7515 "unable to register hwmon platform device\n");
7fd40029
HMH		 7516 thinkpad_acpi_module_exit();
7517 return ret;
7518 }
7519 ret = device_create_file(&tpacpi_sensors_pdev->dev,
7520 &dev_attr_thinkpad_acpi_pdev_name);
7521 if (ret) {
e0c7dfe7 7522 printk(TPACPI_ERR
35ff8b9f 7523 "unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 7524 thinkpad_acpi_module_exit();
7525 return ret;
7526 }
7527 tp_features.sensors_pdev_attrs_registered = 1;
7528 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 7529 if (IS_ERR(tpacpi_hwmon)) {
7530 ret = PTR_ERR(tpacpi_hwmon);
7531 tpacpi_hwmon = NULL;
e0c7dfe7 7532 printk(TPACPI_ERR "unable to register hwmon device\n");
54ae1501
HMH		 7533 thinkpad_acpi_module_exit();
7534 return ret;
7535 }
8523ed6f 7536 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 7537 tpacpi_inputdev = input_allocate_device();
7538 if (!tpacpi_inputdev) {
e0c7dfe7 7539 printk(TPACPI_ERR "unable to allocate input device\n");
7f5d1cd6
HMH		 7540 thinkpad_acpi_module_exit();
7541 return -ENOMEM;
7542 } else {
7543 /* Prepare input device, but don't register */
7544 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 7545 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 7546 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 7547 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
7548 thinkpad_id.vendor :
7549 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 7550 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
7551 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
7552 }
a5763f22
HMH		 7553 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7554 ret = ibm_init(&ibms_init[i]);
7555 if (ret >= 0 && *ibms_init[i].param)
7556 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 7557 if (ret < 0) {
1def7115 7558 thinkpad_acpi_module_exit();
1da177e4
LT		 7559 return ret;
7560 }
7561 }
7f5d1cd6
HMH		 7562 ret = input_register_device(tpacpi_inputdev);
7563 if (ret < 0) {
e0c7dfe7 7564 printk(TPACPI_ERR "unable to register input device\n");
7f5d1cd6
HMH		 7565 thinkpad_acpi_module_exit();
7566 return ret;
7567 } else {
7568 tp_features.input_device_registered = 1;
7569 }
1da177e4 7570
8fef502e 7571 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 7572 return 0;
7573}
7574
95e57ab2
HMH		 7575MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
7576
f68080f8
HMH		 7577/*
7578 * DMI matching for module autoloading
7579 *
7580 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7581 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
7582 *
7583 * Only models listed in thinkwiki will be supported, so add yours
7584 * if it is not there yet.
7585 */
7586#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 7587 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8
HMH		 7588
7589/* Non-ancient thinkpads */
7590MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
7591MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
7592
7593/* Ancient thinkpad BIOSes have to be identified by
7594 * BIOS type or model number, and there are far less
7595 * BIOS types than model numbers... */
b36a50f9
MCS		 7596IBM_BIOS_MODULE_ALIAS("I[BDHIMNOTWVYZ]");
7597IBM_BIOS_MODULE_ALIAS("1[0368A-GIKM-PST]");
7598IBM_BIOS_MODULE_ALIAS("K[UX-Z]");
f68080f8
HMH		 7599
7600MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
e0c7dfe7
HMH		 7601MODULE_DESCRIPTION(TPACPI_DESC);
7602MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 7603MODULE_LICENSE("GPL");
7604
1def7115
HMH		 7605module_init(thinkpad_acpi_module_init);
7606module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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