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thinkpad-acpi: add missing log levels
[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"
50ebec09 25#define TPACPI_SYSFS_VERSION 0x020200
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>
57#include <linux/kthread.h>
58#include <linux/freezer.h>
59#include <linux/delay.h>
60
61#include <linux/nvram.h>
62#include <linux/proc_fs.h>
63#include <linux/sysfs.h>
64#include <linux/backlight.h>
65#include <linux/fb.h>
66#include <linux/platform_device.h>
67#include <linux/hwmon.h>
68#include <linux/hwmon-sysfs.h>
69#include <linux/input.h>
4fa6811b 70#include <linux/leds.h>
0e74dc26 71#include <linux/rfkill.h>
0c78039f
HMH		 72#include <asm/uaccess.h>
73
74#include <linux/dmi.h>
75#include <linux/jiffies.h>
76#include <linux/workqueue.h>
77
78#include <acpi/acpi_drivers.h>
0c78039f
HMH		 79
80#include <linux/pci_ids.h>
81
0c78039f
HMH		 82
83/* ThinkPad CMOS commands */
84#define TP_CMOS_VOLUME_DOWN 0
85#define TP_CMOS_VOLUME_UP 1
86#define TP_CMOS_VOLUME_MUTE 2
87#define TP_CMOS_BRIGHTNESS_UP 4
88#define TP_CMOS_BRIGHTNESS_DOWN 5
4fa6811b
HMH		 89#define TP_CMOS_THINKLIGHT_ON 12
90#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 91
92/* NVRAM Addresses */
93enum tp_nvram_addr {
94 TP_NVRAM_ADDR_HK2 = 0x57,
95 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
96 TP_NVRAM_ADDR_VIDEO = 0x59,
97 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
98 TP_NVRAM_ADDR_MIXER = 0x60,
99};
100
101/* NVRAM bit masks */
102enum {
103 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
104 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
105 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
106 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
107 TP_NVRAM_MASK_THINKLIGHT = 0x10,
108 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
109 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
110 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
111 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
112 TP_NVRAM_MASK_MUTE = 0x40,
113 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
114 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
115 TP_NVRAM_POS_LEVEL_VOLUME = 0,
116};
117
b21a15f6 118/* ACPI HIDs */
e0c7dfe7 119#define TPACPI_ACPI_HKEY_HID "IBM0068"
b21a15f6
HMH		 120
121/* Input IDs */
122#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
123#define TPACPI_HKEY_INPUT_VERSION 0x4101
124
153f8220
HMH		 125/* ACPI \WGSV commands */
126enum {
127 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
128 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
129 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
130 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
131};
132
133/* TP_ACPI_WGSV_GET_STATE bits */
134enum {
135 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
136 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
137 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
138 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
139 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
140 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
141 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
142 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
143 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
144 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
145};
b21a15f6
HMH		 146
147/****************************************************************************
148 * Main driver
149 */
150
e0c7dfe7
HMH		 151#define TPACPI_NAME "thinkpad"
152#define TPACPI_DESC "ThinkPad ACPI Extras"
153#define TPACPI_FILE TPACPI_NAME "_acpi"
154#define TPACPI_URL "http://ibm-acpi.sf.net/"
155#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 156
e0c7dfe7
HMH		 157#define TPACPI_PROC_DIR "ibm"
158#define TPACPI_ACPI_EVENT_PREFIX "ibm"
159#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 160#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 161#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 162
95e57ab2 163#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 164#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 165
e0c7dfe7 166#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 167
0e74dc26
HMH		 168/* rfkill switches */
169enum {
170 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
171 TPACPI_RFK_WWAN_SW_ID,
0045c0aa 172 TPACPI_RFK_UWB_SW_ID,
0e74dc26
HMH		 173};
174
7ff8d62f 175/* printk headers */
e0c7dfe7 176#define TPACPI_LOG TPACPI_FILE ": "
7ff8d62f
HMH		 177#define TPACPI_EMERG KERN_EMERG TPACPI_LOG
178#define TPACPI_ALERT KERN_ALERT TPACPI_LOG
179#define TPACPI_CRIT KERN_CRIT TPACPI_LOG
180#define TPACPI_ERR KERN_ERR TPACPI_LOG
181#define TPACPI_WARN KERN_WARNING TPACPI_LOG
182#define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
183#define TPACPI_INFO KERN_INFO TPACPI_LOG
184#define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
185
186/* Debugging printk groups */
0c78039f
HMH		 187#define TPACPI_DBG_ALL 0xffff
188#define TPACPI_DBG_INIT 0x0001
189#define TPACPI_DBG_EXIT 0x0002
0c78039f 190
35ff8b9f
HMH		 191#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
192#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
193#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 194
0c78039f
HMH		 195
196/****************************************************************************
b21a15f6 197 * Driver-wide structs and misc. variables
0c78039f
HMH		 198 */
199
200struct ibm_struct;
201
202struct tp_acpi_drv_struct {
203 const struct acpi_device_id *hid;
204 struct acpi_driver *driver;
205
206 void (*notify) (struct ibm_struct *, u32);
207 acpi_handle *handle;
208 u32 type;
209 struct acpi_device *device;
210};
211
212struct ibm_struct {
213 char *name;
214
215 int (*read) (char *);
216 int (*write) (char *);
217 void (*exit) (void);
218 void (*resume) (void);
083f1760 219 void (*suspend) (pm_message_t state);
90d9d3c7 220 void (*shutdown) (void);
0c78039f
HMH		 221
222 struct list_head all_drivers;
223
224 struct tp_acpi_drv_struct *acpi;
225
226 struct {
227 u8 acpi_driver_registered:1;
228 u8 acpi_notify_installed:1;
229 u8 proc_created:1;
230 u8 init_called:1;
231 u8 experimental:1;
232 } flags;
233};
234
235struct ibm_init_struct {
236 char param[32];
237
238 int (*init) (struct ibm_init_struct *);
239 struct ibm_struct *data;
240};
241
242static struct {
243#ifdef CONFIG_THINKPAD_ACPI_BAY
244 u32 bay_status:1;
245 u32 bay_eject:1;
246 u32 bay_status2:1;
247 u32 bay_eject2:1;
248#endif
249 u32 bluetooth:1;
250 u32 hotkey:1;
251 u32 hotkey_mask:1;
252 u32 hotkey_wlsw:1;
6c231bd5 253 u32 hotkey_tablet:1;
0c78039f
HMH		 254 u32 light:1;
255 u32 light_status:1;
256 u32 bright_16levels:1;
b5972796 257 u32 bright_acpimode:1;
0c78039f 258 u32 wan:1;
0045c0aa 259 u32 uwb:1;
0c78039f
HMH		 260 u32 fan_ctrl_status_undef:1;
261 u32 input_device_registered:1;
262 u32 platform_drv_registered:1;
263 u32 platform_drv_attrs_registered:1;
264 u32 sensors_pdrv_registered:1;
265 u32 sensors_pdrv_attrs_registered:1;
266 u32 sensors_pdev_attrs_registered:1;
267 u32 hotkey_poll_active:1;
268} tp_features;
269
92889022
HMH		 270static struct {
271 u16 hotkey_mask_ff:1;
2d5e94d7 272 u16 bright_cmos_ec_unsync:1;
92889022
HMH		 273} tp_warned;
274
0c78039f
HMH		 275struct thinkpad_id_data {
276 unsigned int vendor; /* ThinkPad vendor:
277 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
278
279 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
280 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
281
282 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
283 u16 ec_model;
284
8c74adbc
HMH		 285 char *model_str; /* ThinkPad T43 */
286 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 287};
0c78039f
HMH		 288static struct thinkpad_id_data thinkpad_id;
289
8fef502e
HMH		 290static enum {
291 TPACPI_LIFE_INIT = 0,
292 TPACPI_LIFE_RUNNING,
293 TPACPI_LIFE_EXITING,
294} tpacpi_lifecycle;
295
b21a15f6
HMH		 296static int experimental;
297static u32 dbg_level;
298
e0e3c061
HMH		 299static struct workqueue_struct *tpacpi_wq;
300
4fa6811b
HMH		 301/* Special LED class that can defer work */
302struct tpacpi_led_classdev {
303 struct led_classdev led_classdev;
304 struct work_struct work;
305 enum led_brightness new_brightness;
af116101 306 unsigned int led;
4fa6811b
HMH		 307};
308
a73f3091
HMH		 309#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
310static int dbg_wlswemul;
311static int tpacpi_wlsw_emulstate;
312static int dbg_bluetoothemul;
313static int tpacpi_bluetooth_emulstate;
314static int dbg_wwanemul;
315static int tpacpi_wwan_emulstate;
0045c0aa
HMH		 316static int dbg_uwbemul;
317static int tpacpi_uwb_emulstate;
a73f3091
HMH		 318#endif
319
320
3dcc2c3b
HMH		 321/*************************************************************************
322 * Debugging helpers
323 */
324
325#define dbg_printk(a_dbg_level, format, arg...) \
326 do { if (dbg_level & (a_dbg_level)) \
327 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
328 } while (0)
329
330#ifdef CONFIG_THINKPAD_ACPI_DEBUG
331#define vdbg_printk dbg_printk
332static const char *str_supported(int is_supported);
333#else
334#define vdbg_printk(a_dbg_level, format, arg...) \
335 do { } while (0)
336#endif
337
338
56b6aeb0
HMH		 339/****************************************************************************
340 ****************************************************************************
341 *
342 * ACPI Helpers and device model
343 *
344 ****************************************************************************
345 ****************************************************************************/
346
347/*************************************************************************
348 * ACPI basic handles
349 */
1da177e4 350
94954cc6 351static acpi_handle root_handle;
1da177e4 352
e0c7dfe7 353#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4
LT		 354 static acpi_handle object##_handle; \
355 static acpi_handle *object##_parent = &parent##_handle; \
78f81cc4 356 static char *object##_path; \
1da177e4
LT		 357 static char *object##_paths[] = { paths }
358
e0c7dfe7 359TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
78f81cc4
BD		 360 "\\_SB.PCI.ISA.EC", /* 570 */
361 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
362 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
363 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
364 "\\_SB.PCI0.ICH3.EC0", /* R31 */
365 "\\_SB.PCI0.LPC.EC", /* all others */
56b6aeb0 366 );
78f81cc4 367
e0c7dfe7
HMH		 368TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
369TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 370
35ff8b9f
HMH		 371TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
372 /* T4x, X31, X40 */
78f81cc4
BD		 373 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
374 "\\CMS", /* R40, R40e */
56b6aeb0 375 ); /* all others */
78f81cc4 376
e0c7dfe7 377TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 378 "^HKEY", /* R30, R31 */
379 "HKEY", /* all others */
56b6aeb0 380 ); /* 570 */
78f81cc4 381
d7c1d17d
HMH		 382TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
383 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
384 "\\_SB.PCI0.VID0", /* 770e */
385 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
386 "\\_SB.PCI0.AGP.VID", /* all others */
387 ); /* R30, R31 */
388
78f81cc4 389
56b6aeb0
HMH		 390/*************************************************************************
391 * ACPI helpers
a8b7a662
HMH		 392 */
393
1da177e4
LT		 394static int acpi_evalf(acpi_handle handle,
395 void *res, char *method, char *fmt, ...)
396{
397 char *fmt0 = fmt;
78f81cc4 398 struct acpi_object_list params;
e0c7dfe7 399 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 400 struct acpi_buffer result, *resultp;
401 union acpi_object out_obj;
402 acpi_status status;
403 va_list ap;
404 char res_type;
405 int success;
406 int quiet;
1da177e4
LT		 407
408 if (!*fmt) {
e0c7dfe7 409 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
1da177e4
LT		 410 return 0;
411 }
412
413 if (*fmt == 'q') {
414 quiet = 1;
415 fmt++;
416 } else
417 quiet = 0;
418
419 res_type = *(fmt++);
420
421 params.count = 0;
422 params.pointer = &in_objs[0];
423
424 va_start(ap, fmt);
425 while (*fmt) {
426 char c = *(fmt++);
427 switch (c) {
428 case 'd': /* int */
429 in_objs[params.count].integer.value = va_arg(ap, int);
430 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
431 break;
78f81cc4 432 /* add more types as needed */
1da177e4 433 default:
e0c7dfe7 434 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 435 "with invalid format character '%c'\n", c);
436 return 0;
437 }
438 }
439 va_end(ap);
440
78f81cc4
BD		 441 if (res_type != 'v') {
442 result.length = sizeof(out_obj);
443 result.pointer = &out_obj;
444 resultp = &result;
445 } else
446 resultp = NULL;
1da177e4 447
78f81cc4 448 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 449
450 switch (res_type) {
78f81cc4 451 case 'd': /* int */
1da177e4
LT		 452 if (res)
453 *(int *)res = out_obj.integer.value;
454 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
455 break;
78f81cc4 456 case 'v': /* void */
1da177e4
LT		 457 success = status == AE_OK;
458 break;
78f81cc4 459 /* add more types as needed */
1da177e4 460 default:
e0c7dfe7 461 printk(TPACPI_ERR "acpi_evalf() called "
1da177e4
LT		 462 "with invalid format character '%c'\n", res_type);
463 return 0;
464 }
465
56b6aeb0 466 if (!success && !quiet)
e0c7dfe7 467 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
56b6aeb0
HMH		 468 method, fmt0, status);
469
470 return success;
471}
472
35ff8b9f 473static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 474{
475 int v;
476
477 if (ecrd_handle) {
478 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
479 return 0;
480 *p = v;
481 } else {
482 if (ec_read(i, p) < 0)
483 return 0;
484 }
485
486 return 1;
487}
488
489static int acpi_ec_write(int i, u8 v)
490{
491 if (ecwr_handle) {
492 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
493 return 0;
494 } else {
495 if (ec_write(i, v) < 0)
496 return 0;
497 }
498
499 return 1;
500}
501
013c40e4 502#if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
56b6aeb0
HMH		 503static int _sta(acpi_handle handle)
504{
505 int status;
506
507 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
508 status = 0;
509
510 return status;
511}
013c40e4 512#endif
56b6aeb0 513
c9bea99c
HMH		 514static int issue_thinkpad_cmos_command(int cmos_cmd)
515{
516 if (!cmos_handle)
517 return -ENXIO;
518
519 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
520 return -EIO;
521
522 return 0;
523}
524
56b6aeb0
HMH		 525/*************************************************************************
526 * ACPI device model
527 */
528
35ff8b9f
HMH		 529#define TPACPI_ACPIHANDLE_INIT(object) \
530 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
f74a27d4
HMH		 531 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
532
8d376cd6 533static void drv_acpi_handle_init(char *name,
5fba344c
HMH		 534 acpi_handle *handle, acpi_handle parent,
535 char **paths, int num_paths, char **path)
56b6aeb0
HMH		 536{
537 int i;
538 acpi_status status;
539
5ae930e6
HMH		 540 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
541 name);
542
56b6aeb0
HMH		 543 for (i = 0; i < num_paths; i++) {
544 status = acpi_get_handle(parent, paths[i], handle);
545 if (ACPI_SUCCESS(status)) {
546 *path = paths[i];
5ae930e6
HMH		 547 dbg_printk(TPACPI_DBG_INIT,
548 "Found ACPI handle %s for %s\n",
549 *path, name);
56b6aeb0
HMH		 550 return;
551 }
552 }
553
5ae930e6
HMH		 554 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
555 name);
56b6aeb0
HMH		 556 *handle = NULL;
557}
558
8d376cd6 559static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 560{
561 struct ibm_struct *ibm = data;
562
8fef502e
HMH		 563 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
564 return;
565
8d376cd6 566 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 567 return;
568
8d376cd6 569 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 570}
571
8d376cd6 572static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 573{
574 acpi_status status;
5ae930e6 575 int rc;
56b6aeb0 576
8d376cd6
HMH		 577 BUG_ON(!ibm->acpi);
578
579 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 580 return 0;
581
5ae930e6 582 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 583 "setting up ACPI notify for %s\n", ibm->name);
584
5ae930e6
HMH		 585 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
586 if (rc < 0) {
e0c7dfe7 587 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
5ae930e6 588 ibm->name, rc);
56b6aeb0
HMH		 589 return -ENODEV;
590 }
591
db89b4f0 592 ibm->acpi->device->driver_data = ibm;
8d376cd6 593 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 594 TPACPI_ACPI_EVENT_PREFIX,
643f12db 595 ibm->name);
56b6aeb0 596
8d376cd6
HMH		 597 status = acpi_install_notify_handler(*ibm->acpi->handle,
598 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 599 if (ACPI_FAILURE(status)) {
600 if (status == AE_ALREADY_EXISTS) {
35ff8b9f
HMH		 601 printk(TPACPI_NOTICE
602 "another device driver is already "
603 "handling %s events\n", ibm->name);
56b6aeb0 604 } else {
35ff8b9f
HMH		 605 printk(TPACPI_ERR
606 "acpi_install_notify_handler(%s) failed: %d\n",
607 ibm->name, status);
56b6aeb0
HMH		 608 }
609 return -ENODEV;
610 }
8d376cd6 611 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 612 return 0;
613}
614
8d376cd6 615static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 616{
617 return 0;
618}
619
6700121b 620static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 621{
5ae930e6 622 int rc;
56b6aeb0 623
fe08bc4b
HMH		 624 dbg_printk(TPACPI_DBG_INIT,
625 "registering %s as an ACPI driver\n", ibm->name);
626
8d376cd6
HMH		 627 BUG_ON(!ibm->acpi);
628
629 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
630 if (!ibm->acpi->driver) {
4f778b92
MK		 631 printk(TPACPI_ERR
632 "failed to allocate memory for ibm->acpi->driver\n");
5fba344c 633 return -ENOMEM;
56b6aeb0
HMH		 634 }
635
e0c7dfe7 636 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 637 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 638
8d376cd6 639 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 640
5ae930e6
HMH		 641 rc = acpi_bus_register_driver(ibm->acpi->driver);
642 if (rc < 0) {
e0c7dfe7 643 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 644 ibm->name, rc);
8d376cd6
HMH		 645 kfree(ibm->acpi->driver);
646 ibm->acpi->driver = NULL;
5ae930e6 647 } else if (!rc)
8d376cd6 648 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 649
5ae930e6 650 return rc;
56b6aeb0
HMH		 651}
652
653
654/****************************************************************************
655 ****************************************************************************
656 *
657 * Procfs Helpers
658 *
659 ****************************************************************************
660 ****************************************************************************/
661
8d376cd6
HMH		 662static int dispatch_procfs_read(char *page, char **start, off_t off,
663 int count, int *eof, void *data)
56b6aeb0
HMH		 664{
665 struct ibm_struct *ibm = data;
666 int len;
667
668 if (!ibm || !ibm->read)
669 return -EINVAL;
670
671 len = ibm->read(page);
672 if (len < 0)
673 return len;
674
675 if (len <= off + count)
676 *eof = 1;
677 *start = page + off;
678 len -= off;
679 if (len > count)
680 len = count;
681 if (len < 0)
682 len = 0;
683
684 return len;
685}
686
8d376cd6 687static int dispatch_procfs_write(struct file *file,
35ff8b9f 688 const char __user *userbuf,
8d376cd6 689 unsigned long count, void *data)
56b6aeb0
HMH		 690{
691 struct ibm_struct *ibm = data;
692 char *kernbuf;
693 int ret;
694
695 if (!ibm || !ibm->write)
696 return -EINVAL;
697
698 kernbuf = kmalloc(count + 2, GFP_KERNEL);
699 if (!kernbuf)
700 return -ENOMEM;
1da177e4 701
56b6aeb0
HMH		 702 if (copy_from_user(kernbuf, userbuf, count)) {
703 kfree(kernbuf);
704 return -EFAULT;
705 }
1da177e4 706
56b6aeb0
HMH		 707 kernbuf[count] = 0;
708 strcat(kernbuf, ",");
709 ret = ibm->write(kernbuf);
710 if (ret == 0)
711 ret = count;
1da177e4 712
56b6aeb0
HMH		 713 kfree(kernbuf);
714
715 return ret;
1da177e4
LT		 716}
717
718static char *next_cmd(char **cmds)
719{
720 char *start = *cmds;
721 char *end;
722
723 while ((end = strchr(start, ',')) && end == start)
724 start = end + 1;
725
726 if (!end)
727 return NULL;
728
729 *end = 0;
730 *cmds = end + 1;
731 return start;
732}
733
56b6aeb0 734
54ae1501
HMH		 735/****************************************************************************
736 ****************************************************************************
737 *
7f5d1cd6 738 * Device model: input, hwmon and platform
54ae1501
HMH		 739 *
740 ****************************************************************************
741 ****************************************************************************/
742
94954cc6 743static struct platform_device *tpacpi_pdev;
7fd40029 744static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 745static struct device *tpacpi_hwmon;
7f5d1cd6 746static struct input_dev *tpacpi_inputdev;
8523ed6f 747static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 748static LIST_HEAD(tpacpi_all_drivers);
e295e850 749
083f1760
HMH		 750static int tpacpi_suspend_handler(struct platform_device *pdev,
751 pm_message_t state)
752{
753 struct ibm_struct *ibm, *itmp;
754
755 list_for_each_entry_safe(ibm, itmp,
756 &tpacpi_all_drivers,
757 all_drivers) {
758 if (ibm->suspend)
759 (ibm->suspend)(state);
760 }
761
762 return 0;
763}
764
e295e850
HMH		 765static int tpacpi_resume_handler(struct platform_device *pdev)
766{
767 struct ibm_struct *ibm, *itmp;
768
769 list_for_each_entry_safe(ibm, itmp,
770 &tpacpi_all_drivers,
771 all_drivers) {
772 if (ibm->resume)
773 (ibm->resume)();
774 }
775
776 return 0;
777}
778
90d9d3c7
HMH		 779static void tpacpi_shutdown_handler(struct platform_device *pdev)
780{
781 struct ibm_struct *ibm, *itmp;
782
783 list_for_each_entry_safe(ibm, itmp,
784 &tpacpi_all_drivers,
785 all_drivers) {
786 if (ibm->shutdown)
787 (ibm->shutdown)();
788 }
789}
790
54ae1501
HMH		 791static struct platform_driver tpacpi_pdriver = {
792 .driver = {
e0c7dfe7 793 .name = TPACPI_DRVR_NAME,
54ae1501
HMH		 794 .owner = THIS_MODULE,
795 },
083f1760 796 .suspend = tpacpi_suspend_handler,
e295e850 797 .resume = tpacpi_resume_handler,
90d9d3c7 798 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 799};
800
7fd40029
HMH		 801static struct platform_driver tpacpi_hwmon_pdriver = {
802 .driver = {
e0c7dfe7 803 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 804 .owner = THIS_MODULE,
805 },
806};
54ae1501 807
176750d6 808/*************************************************************************
b21a15f6 809 * sysfs support helpers
176750d6
HMH		 810 */
811
b21a15f6
HMH		 812struct attribute_set {
813 unsigned int members, max_members;
814 struct attribute_group group;
176750d6
HMH		 815};
816
7252374a
HMH		 817struct attribute_set_obj {
818 struct attribute_set s;
819 struct attribute *a;
820} __attribute__((packed));
821
822static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 823 const char *name)
7252374a
HMH		 824{
825 struct attribute_set_obj *sobj;
826
827 if (max_members == 0)
828 return NULL;
829
830 /* Allocates space for implicit NULL at the end too */
831 sobj = kzalloc(sizeof(struct attribute_set_obj) +
832 max_members * sizeof(struct attribute *),
833 GFP_KERNEL);
834 if (!sobj)
835 return NULL;
836 sobj->s.max_members = max_members;
837 sobj->s.group.attrs = &sobj->a;
838 sobj->s.group.name = name;
839
840 return &sobj->s;
841}
842
f74a27d4
HMH		 843#define destroy_attr_set(_set) \
844 kfree(_set);
845
7252374a 846/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 847static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 848{
849 if (!s || !attr)
850 return -EINVAL;
851
852 if (s->members >= s->max_members)
853 return -ENOMEM;
854
855 s->group.attrs[s->members] = attr;
856 s->members++;
857
858 return 0;
859}
860
35ff8b9f 861static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 862 struct attribute **attr,
863 unsigned int count)
864{
865 int i, res;
866
867 for (i = 0; i < count; i++) {
868 res = add_to_attr_set(s, attr[i]);
869 if (res)
870 return res;
871 }
872
873 return 0;
874}
875
35ff8b9f 876static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 877{
878 sysfs_remove_group(kobj, &s->group);
879 destroy_attr_set(s);
880}
881
f74a27d4
HMH		 882#define register_attr_set_with_sysfs(_attr_set, _kobj) \
883 sysfs_create_group(_kobj, &_attr_set->group)
884
7252374a
HMH		 885static int parse_strtoul(const char *buf,
886 unsigned long max, unsigned long *value)
887{
888 char *endp;
889
32afbf07
HMH		 890 while (*buf && isspace(*buf))
891 buf++;
7252374a
HMH		 892 *value = simple_strtoul(buf, &endp, 0);
893 while (*endp && isspace(*endp))
894 endp++;
895 if (*endp || *value > max)
896 return -EINVAL;
897
898 return 0;
899}
900
d64c81c4
HMH		 901static void tpacpi_disable_brightness_delay(void)
902{
903 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
904 printk(TPACPI_NOTICE
905 "ACPI backlight control delay disabled\n");
906}
907
b5972796
HMH		 908static int __init tpacpi_query_bcl_levels(acpi_handle handle)
909{
910 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
911 union acpi_object *obj;
912 int rc;
913
914 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
915 obj = (union acpi_object *)buffer.pointer;
916 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
917 printk(TPACPI_ERR "Unknown _BCL data, "
918 "please report this to %s\n", TPACPI_MAIL);
919 rc = 0;
920 } else {
921 rc = obj->package.count;
922 }
923 } else {
924 return 0;
925 }
926
927 kfree(buffer.pointer);
928 return rc;
929}
930
931static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
932 u32 lvl, void *context, void **rv)
933{
934 char name[ACPI_PATH_SEGMENT_LENGTH];
935 struct acpi_buffer buffer = { sizeof(name), &name };
936
937 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
938 !strncmp("_BCL", name, sizeof(name) - 1)) {
939 BUG_ON(!rv || !*rv);
940 **(int **)rv = tpacpi_query_bcl_levels(handle);
941 return AE_CTRL_TERMINATE;
942 } else {
943 return AE_OK;
944 }
945}
946
947/*
948 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
949 */
950static int __init tpacpi_check_std_acpi_brightness_support(void)
951{
952 int status;
953 int bcl_levels = 0;
954 void *bcl_ptr = &bcl_levels;
955
956 if (!vid_handle) {
957 TPACPI_ACPIHANDLE_INIT(vid);
958 }
959 if (!vid_handle)
960 return 0;
961
962 /*
963 * Search for a _BCL method, and execute it. This is safe on all
964 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
965 * BIOS in ACPI backlight control mode. We do NOT have to care
966 * about calling the _BCL method in an enabled video device, any
967 * will do for our purposes.
968 */
969
970 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
971 tpacpi_acpi_walk_find_bcl, NULL,
972 &bcl_ptr);
973
974 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
975 tp_features.bright_acpimode = 1;
976 return (bcl_levels - 2);
977 }
978
979 return 0;
980}
981
0e74dc26
HMH		 982static int __init tpacpi_new_rfkill(const unsigned int id,
983 struct rfkill **rfk,
984 const enum rfkill_type rfktype,
985 const char *name,
0045c0aa 986 const bool set_default,
0e74dc26
HMH		 987 int (*toggle_radio)(void *, enum rfkill_state),
988 int (*get_state)(void *, enum rfkill_state *))
989{
990 int res;
90d9d3c7
HMH		 991 enum rfkill_state initial_state = RFKILL_STATE_SOFT_BLOCKED;
992
993 res = get_state(NULL, &initial_state);
994 if (res < 0) {
995 printk(TPACPI_ERR
996 "failed to read initial state for %s, error %d; "
997 "will turn radio off\n", name, res);
0045c0aa 998 } else if (set_default) {
90d9d3c7
HMH		 999 /* try to set the initial state as the default for the rfkill
1000 * type, since we ask the firmware to preserve it across S5 in
1001 * NVRAM */
1002 rfkill_set_default(rfktype,
1003 (initial_state == RFKILL_STATE_UNBLOCKED) ?
1004 RFKILL_STATE_UNBLOCKED :
1005 RFKILL_STATE_SOFT_BLOCKED);
1006 }
0e74dc26
HMH		 1007
1008 *rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype);
1009 if (!*rfk) {
1010 printk(TPACPI_ERR
1011 "failed to allocate memory for rfkill class\n");
1012 return -ENOMEM;
1013 }
1014
1015 (*rfk)->name = name;
1016 (*rfk)->get_state = get_state;
1017 (*rfk)->toggle_radio = toggle_radio;
90d9d3c7 1018 (*rfk)->state = initial_state;
0e74dc26
HMH		 1019
1020 res = rfkill_register(*rfk);
1021 if (res < 0) {
1022 printk(TPACPI_ERR
1023 "failed to register %s rfkill switch: %d\n",
1024 name, res);
1025 rfkill_free(*rfk);
1026 *rfk = NULL;
1027 return res;
1028 }
1029
1030 return 0;
1031}
1032
56b6aeb0 1033/*************************************************************************
b21a15f6 1034 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1035 */
1036
b21a15f6
HMH		 1037/* interface_version --------------------------------------------------- */
1038static ssize_t tpacpi_driver_interface_version_show(
1039 struct device_driver *drv,
1040 char *buf)
1da177e4 1041{
b21a15f6
HMH		 1042 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1043}
1044
1045static DRIVER_ATTR(interface_version, S_IRUGO,
1046 tpacpi_driver_interface_version_show, NULL);
1047
1048/* debug_level --------------------------------------------------------- */
1049static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1050 char *buf)
1051{
1052 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1053}
1054
1055static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1056 const char *buf, size_t count)
1057{
1058 unsigned long t;
1059
1060 if (parse_strtoul(buf, 0xffff, &t))
1061 return -EINVAL;
1062
1063 dbg_level = t;
1064
1065 return count;
1066}
1067
1068static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1069 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1070
1071/* version ------------------------------------------------------------- */
1072static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1073 char *buf)
1074{
35ff8b9f
HMH		 1075 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1076 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 1077}
1078
1079static DRIVER_ATTR(version, S_IRUGO,
1080 tpacpi_driver_version_show, NULL);
1081
1082/* --------------------------------------------------------------------- */
1083
a73f3091
HMH		 1084#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1085
1086static void tpacpi_send_radiosw_update(void);
1087
1088/* wlsw_emulstate ------------------------------------------------------ */
1089static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1090 char *buf)
1091{
1092 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1093}
1094
1095static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1096 const char *buf, size_t count)
1097{
1098 unsigned long t;
1099
1100 if (parse_strtoul(buf, 1, &t))
1101 return -EINVAL;
1102
1103 if (tpacpi_wlsw_emulstate != t) {
1104 tpacpi_wlsw_emulstate = !!t;
1105 tpacpi_send_radiosw_update();
1106 } else
1107 tpacpi_wlsw_emulstate = !!t;
1108
1109 return count;
1110}
1111
1112static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1113 tpacpi_driver_wlsw_emulstate_show,
1114 tpacpi_driver_wlsw_emulstate_store);
1115
1116/* bluetooth_emulstate ------------------------------------------------- */
1117static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1118 struct device_driver *drv,
1119 char *buf)
1120{
1121 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1122}
1123
1124static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1125 struct device_driver *drv,
1126 const char *buf, size_t count)
1127{
1128 unsigned long t;
1129
1130 if (parse_strtoul(buf, 1, &t))
1131 return -EINVAL;
1132
1133 tpacpi_bluetooth_emulstate = !!t;
1134
1135 return count;
1136}
1137
1138static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1139 tpacpi_driver_bluetooth_emulstate_show,
1140 tpacpi_driver_bluetooth_emulstate_store);
1141
1142/* wwan_emulstate ------------------------------------------------- */
1143static ssize_t tpacpi_driver_wwan_emulstate_show(
1144 struct device_driver *drv,
1145 char *buf)
1146{
1147 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1148}
1149
1150static ssize_t tpacpi_driver_wwan_emulstate_store(
1151 struct device_driver *drv,
1152 const char *buf, size_t count)
1153{
1154 unsigned long t;
1155
1156 if (parse_strtoul(buf, 1, &t))
1157 return -EINVAL;
1158
1159 tpacpi_wwan_emulstate = !!t;
1160
1161 return count;
1162}
1163
1164static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1165 tpacpi_driver_wwan_emulstate_show,
1166 tpacpi_driver_wwan_emulstate_store);
1167
0045c0aa
HMH		 1168/* uwb_emulstate ------------------------------------------------- */
1169static ssize_t tpacpi_driver_uwb_emulstate_show(
1170 struct device_driver *drv,
1171 char *buf)
1172{
1173 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1174}
1175
1176static ssize_t tpacpi_driver_uwb_emulstate_store(
1177 struct device_driver *drv,
1178 const char *buf, size_t count)
1179{
1180 unsigned long t;
1181
1182 if (parse_strtoul(buf, 1, &t))
1183 return -EINVAL;
1184
1185 tpacpi_uwb_emulstate = !!t;
1186
1187 return count;
1188}
1189
1190static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1191 tpacpi_driver_uwb_emulstate_show,
1192 tpacpi_driver_uwb_emulstate_store);
a73f3091
HMH		 1193#endif
1194
1195/* --------------------------------------------------------------------- */
1196
35ff8b9f 1197static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1198 &driver_attr_debug_level, &driver_attr_version,
1199 &driver_attr_interface_version,
1200};
1201
1202static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1203{
1204 int i, res;
1205
1206 i = 0;
1207 res = 0;
1208 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1209 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1210 i++;
1211 }
1212
a73f3091
HMH		 1213#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1214 if (!res && dbg_wlswemul)
1215 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1216 if (!res && dbg_bluetoothemul)
1217 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1218 if (!res && dbg_wwanemul)
1219 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1220 if (!res && dbg_uwbemul)
1221 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1222#endif
1223
b21a15f6
HMH		 1224 return res;
1225}
1226
1227static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1228{
1229 int i;
1230
35ff8b9f 1231 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1232 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1233
1234#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1235 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1236 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1237 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1238 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1239#endif
b21a15f6
HMH		 1240}
1241
1242/****************************************************************************
1243 ****************************************************************************
1244 *
1245 * Subdrivers
1246 *
1247 ****************************************************************************
1248 ****************************************************************************/
1249
1250/*************************************************************************
1251 * thinkpad-acpi init subdriver
1252 */
1253
1254static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1255{
e0c7dfe7
HMH		 1256 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1257 printk(TPACPI_INFO "%s\n", TPACPI_URL);
b21a15f6 1258
e0c7dfe7 1259 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
b21a15f6
HMH		 1260 (thinkpad_id.bios_version_str) ?
1261 thinkpad_id.bios_version_str : "unknown",
1262 (thinkpad_id.ec_version_str) ?
1263 thinkpad_id.ec_version_str : "unknown");
d5a2f2f1
HMH		 1264
1265 if (thinkpad_id.vendor && thinkpad_id.model_str)
8c74adbc 1266 printk(TPACPI_INFO "%s %s, model %s\n",
d5a2f2f1
HMH		 1267 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1268 "IBM" : ((thinkpad_id.vendor ==
1269 PCI_VENDOR_ID_LENOVO) ?
1270 "Lenovo" : "Unknown vendor"),
8c74adbc
HMH		 1271 thinkpad_id.model_str,
1272 (thinkpad_id.nummodel_str) ?
1273 thinkpad_id.nummodel_str : "unknown");
3945ac36 1274
1da177e4
LT		 1275 return 0;
1276}
1277
643f12db 1278static int thinkpad_acpi_driver_read(char *p)
1da177e4
LT		 1279{
1280 int len = 0;
1281
e0c7dfe7
HMH		 1282 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1283 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1da177e4
LT		 1284
1285 return len;
1286}
1287
a5763f22
HMH		 1288static struct ibm_struct thinkpad_acpi_driver_data = {
1289 .name = "driver",
1290 .read = thinkpad_acpi_driver_read,
1291};
1292
56b6aeb0
HMH		 1293/*************************************************************************
1294 * Hotkey subdriver
1295 */
1296
f74a27d4
HMH		 1297enum { /* hot key scan codes (derived from ACPI DSDT) */
1298 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1299 TP_ACPI_HOTKEYSCAN_FNF2,
1300 TP_ACPI_HOTKEYSCAN_FNF3,
1301 TP_ACPI_HOTKEYSCAN_FNF4,
1302 TP_ACPI_HOTKEYSCAN_FNF5,
1303 TP_ACPI_HOTKEYSCAN_FNF6,
1304 TP_ACPI_HOTKEYSCAN_FNF7,
1305 TP_ACPI_HOTKEYSCAN_FNF8,
1306 TP_ACPI_HOTKEYSCAN_FNF9,
1307 TP_ACPI_HOTKEYSCAN_FNF10,
1308 TP_ACPI_HOTKEYSCAN_FNF11,
1309 TP_ACPI_HOTKEYSCAN_FNF12,
1310 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1311 TP_ACPI_HOTKEYSCAN_FNINSERT,
1312 TP_ACPI_HOTKEYSCAN_FNDELETE,
1313 TP_ACPI_HOTKEYSCAN_FNHOME,
1314 TP_ACPI_HOTKEYSCAN_FNEND,
1315 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1316 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1317 TP_ACPI_HOTKEYSCAN_FNSPACE,
1318 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1319 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1320 TP_ACPI_HOTKEYSCAN_MUTE,
1321 TP_ACPI_HOTKEYSCAN_THINKPAD,
1322};
1323
01e88f25
HMH		 1324enum { /* Keys available through NVRAM polling */
1325 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1326 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1327};
1328
1329enum { /* Positions of some of the keys in hotkey masks */
1330 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1331 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1332 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1333 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1334 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1335 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1336 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1337 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1338 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1339 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1340 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1341};
1342
1343enum { /* NVRAM to ACPI HKEY group map */
1344 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1345 TP_ACPI_HKEY_ZOOM_MASK |
1346 TP_ACPI_HKEY_DISPSWTCH_MASK |
1347 TP_ACPI_HKEY_HIBERNATE_MASK,
1348 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1349 TP_ACPI_HKEY_BRGHTDWN_MASK,
1350 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1351 TP_ACPI_HKEY_VOLDWN_MASK |
1352 TP_ACPI_HKEY_MUTE_MASK,
1353};
1354
1355#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1356struct tp_nvram_state {
1357 u16 thinkpad_toggle:1;
1358 u16 zoom_toggle:1;
1359 u16 display_toggle:1;
1360 u16 thinklight_toggle:1;
1361 u16 hibernate_toggle:1;
1362 u16 displayexp_toggle:1;
1363 u16 display_state:1;
1364 u16 brightness_toggle:1;
1365 u16 volume_toggle:1;
1366 u16 mute:1;
1367
1368 u8 brightness_level;
1369 u8 volume_level;
1370};
1371
1372static struct task_struct *tpacpi_hotkey_task;
1373static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1374static int hotkey_poll_freq = 10; /* Hz */
1375static struct mutex hotkey_thread_mutex;
1376static struct mutex hotkey_thread_data_mutex;
1377static unsigned int hotkey_config_change;
1378
1379#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1380
1381#define hotkey_source_mask 0U
1382
1383#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1384
f74a27d4
HMH		 1385static struct mutex hotkey_mutex;
1386
a713b4d7
HMH		 1387static enum { /* Reasons for waking up */
1388 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1389 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1390 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1391} hotkey_wakeup_reason;
1392
1393static int hotkey_autosleep_ack;
1394
78f81cc4 1395static int hotkey_orig_status;
ae92bd17 1396static u32 hotkey_orig_mask;
9b010de5 1397static u32 hotkey_all_mask;
6a38abbf 1398static u32 hotkey_reserved_mask;
b2c985e7 1399static u32 hotkey_mask;
6a38abbf 1400
b21a15f6
HMH		 1401static unsigned int hotkey_report_mode;
1402
edf0e0e5 1403static u16 *hotkey_keycode_map;
78f81cc4 1404
94954cc6 1405static struct attribute_set *hotkey_dev_attributes;
a0416420 1406
01e88f25
HMH		 1407#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1408#define HOTKEY_CONFIG_CRITICAL_START \
35ff8b9f
HMH		 1409 do { \
1410 mutex_lock(&hotkey_thread_data_mutex); \
1411 hotkey_config_change++; \
1412 } while (0);
01e88f25
HMH		 1413#define HOTKEY_CONFIG_CRITICAL_END \
1414 mutex_unlock(&hotkey_thread_data_mutex);
1415#else
1416#define HOTKEY_CONFIG_CRITICAL_START
1417#define HOTKEY_CONFIG_CRITICAL_END
1418#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1419
6c231bd5
HMH		 1420/* HKEY.MHKG() return bits */
1421#define TP_HOTKEY_TABLET_MASK (1 << 3)
1422
74941a69
HMH		 1423static int hotkey_get_wlsw(int *status)
1424{
a73f3091
HMH		 1425#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1426 if (dbg_wlswemul) {
1427 *status = !!tpacpi_wlsw_emulstate;
1428 return 0;
1429 }
1430#endif
74941a69
HMH		 1431 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1432 return -EIO;
1433 return 0;
1434}
1435
6c231bd5
HMH		 1436static int hotkey_get_tablet_mode(int *status)
1437{
1438 int s;
1439
1440 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
1441 return -EIO;
1442
cee47f5a
HMH		 1443 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
1444 return 0;
6c231bd5
HMH		 1445}
1446
b2c985e7
HMH		 1447/*
1448 * Call with hotkey_mutex held
1449 */
1450static int hotkey_mask_get(void)
1451{
01e88f25
HMH		 1452 u32 m = 0;
1453
b2c985e7 1454 if (tp_features.hotkey_mask) {
01e88f25 1455 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7
HMH		 1456 return -EIO;
1457 }
01e88f25 1458 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
b2c985e7
HMH		 1459
1460 return 0;
1461}
1462
1463/*
1464 * Call with hotkey_mutex held
1465 */
1466static int hotkey_mask_set(u32 mask)
1467{
1468 int i;
1469 int rc = 0;
1470
1471 if (tp_features.hotkey_mask) {
92889022
HMH		 1472 if (!tp_warned.hotkey_mask_ff &&
1473 (mask == 0xffff || mask == 0xffffff ||
1474 mask == 0xffffffff)) {
1475 tp_warned.hotkey_mask_ff = 1;
1476 printk(TPACPI_NOTICE
1477 "setting the hotkey mask to 0x%08x is likely "
1478 "not the best way to go about it\n", mask);
1479 printk(TPACPI_NOTICE
1480 "please consider using the driver defaults, "
1481 "and refer to up-to-date thinkpad-acpi "
1482 "documentation\n");
1483 }
1484
01e88f25 1485 HOTKEY_CONFIG_CRITICAL_START
b2c985e7
HMH		 1486 for (i = 0; i < 32; i++) {
1487 u32 m = 1 << i;
01e88f25
HMH		 1488 /* enable in firmware mask only keys not in NVRAM
1489 * mode, but enable the key in the cached hotkey_mask
1490 * regardless of mode, or the key will end up
1491 * disabled by hotkey_mask_get() */
b2c985e7
HMH		 1492 if (!acpi_evalf(hkey_handle,
1493 NULL, "MHKM", "vdd", i + 1,
01e88f25 1494 !!((mask & ~hotkey_source_mask) & m))) {
b2c985e7
HMH		 1495 rc = -EIO;
1496 break;
1497 } else {
1498 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1499 }
1500 }
01e88f25 1501 HOTKEY_CONFIG_CRITICAL_END
b2c985e7
HMH		 1502
1503 /* hotkey_mask_get must be called unconditionally below */
01e88f25
HMH		 1504 if (!hotkey_mask_get() && !rc &&
1505 (hotkey_mask & ~hotkey_source_mask) !=
1506 (mask & ~hotkey_source_mask)) {
e0c7dfe7 1507 printk(TPACPI_NOTICE
b2c985e7
HMH		 1508 "requested hot key mask 0x%08x, but "
1509 "firmware forced it to 0x%08x\n",
1510 mask, hotkey_mask);
1511 }
01e88f25
HMH		 1512 } else {
1513#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1514 HOTKEY_CONFIG_CRITICAL_START
1515 hotkey_mask = mask & hotkey_source_mask;
1516 HOTKEY_CONFIG_CRITICAL_END
1517 hotkey_mask_get();
1518 if (hotkey_mask != mask) {
e0c7dfe7 1519 printk(TPACPI_NOTICE
01e88f25
HMH		 1520 "requested hot key mask 0x%08x, "
1521 "forced to 0x%08x (NVRAM poll mask is "
1522 "0x%08x): no firmware mask support\n",
1523 mask, hotkey_mask, hotkey_source_mask);
1524 }
1525#else
1526 hotkey_mask_get();
1527 rc = -ENXIO;
1528#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
b2c985e7
HMH		 1529 }
1530
1531 return rc;
1532}
1533
1534static int hotkey_status_get(int *status)
1535{
1536 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1537 return -EIO;
1538
1539 return 0;
1540}
1541
1542static int hotkey_status_set(int status)
1543{
1544 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1545 return -EIO;
1546
1547 return 0;
1548}
1549
6c231bd5 1550static void tpacpi_input_send_tabletsw(void)
b3ec6f91 1551{
6c231bd5 1552 int state;
b3ec6f91 1553
6c231bd5
HMH		 1554 if (tp_features.hotkey_tablet &&
1555 !hotkey_get_tablet_mode(&state)) {
1556 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 1557
6c231bd5
HMH		 1558 input_report_switch(tpacpi_inputdev,
1559 SW_TABLET_MODE, !!state);
1560 input_sync(tpacpi_inputdev);
1561
1562 mutex_unlock(&tpacpi_inputdev_send_mutex);
1563 }
b3ec6f91
HMH		 1564}
1565
b7c8c200
HMH		 1566static void tpacpi_input_send_key(unsigned int scancode)
1567{
1568 unsigned int keycode;
1569
1570 keycode = hotkey_keycode_map[scancode];
1571
1572 if (keycode != KEY_RESERVED) {
1573 mutex_lock(&tpacpi_inputdev_send_mutex);
1574
1575 input_report_key(tpacpi_inputdev, keycode, 1);
1576 if (keycode == KEY_UNKNOWN)
1577 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1578 scancode);
1579 input_sync(tpacpi_inputdev);
1580
1581 input_report_key(tpacpi_inputdev, keycode, 0);
1582 if (keycode == KEY_UNKNOWN)
1583 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1584 scancode);
1585 input_sync(tpacpi_inputdev);
1586
1587 mutex_unlock(&tpacpi_inputdev_send_mutex);
1588 }
1589}
1590
01e88f25
HMH		 1591#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1592static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1593
1594static void tpacpi_hotkey_send_key(unsigned int scancode)
1595{
1596 tpacpi_input_send_key(scancode);
1597 if (hotkey_report_mode < 2) {
1598 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1599 0x80, 0x1001 + scancode);
1600 }
1601}
1602
1603static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1604{
1605 u8 d;
1606
1607 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1608 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1609 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1610 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1611 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1612 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1613 }
1614 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1615 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1616 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1617 }
1618 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1619 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1620 n->displayexp_toggle =
1621 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1622 }
1623 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1624 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1625 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1626 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1627 n->brightness_toggle =
1628 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1629 }
1630 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1631 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1632 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1633 >> TP_NVRAM_POS_LEVEL_VOLUME;
1634 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1635 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1636 }
1637}
1638
1639#define TPACPI_COMPARE_KEY(__scancode, __member) \
35ff8b9f
HMH		 1640 do { \
1641 if ((mask & (1 << __scancode)) && \
1642 oldn->__member != newn->__member) \
1643 tpacpi_hotkey_send_key(__scancode); \
1644 } while (0)
01e88f25
HMH		 1645
1646#define TPACPI_MAY_SEND_KEY(__scancode) \
1647 do { if (mask & (1 << __scancode)) \
1648 tpacpi_hotkey_send_key(__scancode); } while (0)
1649
1650static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
35ff8b9f 1651 struct tp_nvram_state *newn,
01e88f25
HMH		 1652 u32 mask)
1653{
1654 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1655 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1656 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1657 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1658
1659 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1660
1661 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1662
1663 /* handle volume */
1664 if (oldn->volume_toggle != newn->volume_toggle) {
1665 if (oldn->mute != newn->mute) {
1666 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1667 }
1668 if (oldn->volume_level > newn->volume_level) {
1669 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1670 } else if (oldn->volume_level < newn->volume_level) {
1671 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1672 } else if (oldn->mute == newn->mute) {
1673 /* repeated key presses that didn't change state */
1674 if (newn->mute) {
1675 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1676 } else if (newn->volume_level != 0) {
1677 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1678 } else {
1679 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1680 }
1681 }
1682 }
1683
1684 /* handle brightness */
1685 if (oldn->brightness_toggle != newn->brightness_toggle) {
1686 if (oldn->brightness_level < newn->brightness_level) {
1687 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1688 } else if (oldn->brightness_level > newn->brightness_level) {
1689 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1690 } else {
1691 /* repeated key presses that didn't change state */
1692 if (newn->brightness_level != 0) {
1693 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1694 } else {
1695 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1696 }
1697 }
1698 }
1699}
1700
1701#undef TPACPI_COMPARE_KEY
1702#undef TPACPI_MAY_SEND_KEY
1703
1704static int hotkey_kthread(void *data)
1705{
1706 struct tp_nvram_state s[2];
1707 u32 mask;
1708 unsigned int si, so;
1709 unsigned long t;
1710 unsigned int change_detector, must_reset;
1711
1712 mutex_lock(&hotkey_thread_mutex);
1713
1714 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1715 goto exit;
1716
1717 set_freezable();
1718
1719 so = 0;
1720 si = 1;
1721 t = 0;
1722
1723 /* Initial state for compares */
1724 mutex_lock(&hotkey_thread_data_mutex);
1725 change_detector = hotkey_config_change;
1726 mask = hotkey_source_mask & hotkey_mask;
1727 mutex_unlock(&hotkey_thread_data_mutex);
1728 hotkey_read_nvram(&s[so], mask);
1729
1730 while (!kthread_should_stop() && hotkey_poll_freq) {
1731 if (t == 0)
1732 t = 1000/hotkey_poll_freq;
1733 t = msleep_interruptible(t);
1734 if (unlikely(kthread_should_stop()))
1735 break;
1736 must_reset = try_to_freeze();
1737 if (t > 0 && !must_reset)
1738 continue;
1739
1740 mutex_lock(&hotkey_thread_data_mutex);
1741 if (must_reset || hotkey_config_change != change_detector) {
1742 /* forget old state on thaw or config change */
1743 si = so;
1744 t = 0;
1745 change_detector = hotkey_config_change;
1746 }
1747 mask = hotkey_source_mask & hotkey_mask;
1748 mutex_unlock(&hotkey_thread_data_mutex);
1749
1750 if (likely(mask)) {
1751 hotkey_read_nvram(&s[si], mask);
1752 if (likely(si != so)) {
1753 hotkey_compare_and_issue_event(&s[so], &s[si],
35ff8b9f 1754 mask);
01e88f25
HMH		 1755 }
1756 }
1757
1758 so = si;
1759 si ^= 1;
1760 }
1761
1762exit:
1763 mutex_unlock(&hotkey_thread_mutex);
1764 return 0;
1765}
1766
1767static void hotkey_poll_stop_sync(void)
1768{
1769 if (tpacpi_hotkey_task) {
1770 if (frozen(tpacpi_hotkey_task) ||
1771 freezing(tpacpi_hotkey_task))
1772 thaw_process(tpacpi_hotkey_task);
1773
1774 kthread_stop(tpacpi_hotkey_task);
1775 tpacpi_hotkey_task = NULL;
1776 mutex_lock(&hotkey_thread_mutex);
1777 /* at this point, the thread did exit */
1778 mutex_unlock(&hotkey_thread_mutex);
1779 }
1780}
1781
1782/* call with hotkey_mutex held */
1783static void hotkey_poll_setup(int may_warn)
1784{
1785 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1786 hotkey_poll_freq > 0 &&
1787 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1788 if (!tpacpi_hotkey_task) {
1789 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 1790 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 1791 if (IS_ERR(tpacpi_hotkey_task)) {
1792 tpacpi_hotkey_task = NULL;
35ff8b9f
HMH		 1793 printk(TPACPI_ERR
1794 "could not create kernel thread "
01e88f25
HMH		 1795 "for hotkey polling\n");
1796 }
1797 }
1798 } else {
1799 hotkey_poll_stop_sync();
1800 if (may_warn &&
1801 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
35ff8b9f
HMH		 1802 printk(TPACPI_NOTICE
1803 "hot keys 0x%08x require polling, "
01e88f25
HMH		 1804 "which is currently disabled\n",
1805 hotkey_source_mask);
1806 }
1807 }
1808}
1809
1810static void hotkey_poll_setup_safe(int may_warn)
1811{
1812 mutex_lock(&hotkey_mutex);
1813 hotkey_poll_setup(may_warn);
1814 mutex_unlock(&hotkey_mutex);
1815}
1816
1bc6b9cd
HMH		 1817#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1818
1819static void hotkey_poll_setup_safe(int __unused)
1820{
1821}
1822
1823#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1824
01e88f25
HMH		 1825static int hotkey_inputdev_open(struct input_dev *dev)
1826{
1827 switch (tpacpi_lifecycle) {
1828 case TPACPI_LIFE_INIT:
1829 /*
1830 * hotkey_init will call hotkey_poll_setup_safe
1831 * at the appropriate moment
1832 */
1833 return 0;
1834 case TPACPI_LIFE_EXITING:
1835 return -EBUSY;
1836 case TPACPI_LIFE_RUNNING:
1837 hotkey_poll_setup_safe(0);
1838 return 0;
1839 }
1840
1841 /* Should only happen if tpacpi_lifecycle is corrupt */
1842 BUG();
1843 return -EBUSY;
1844}
1845
1846static void hotkey_inputdev_close(struct input_dev *dev)
1847{
1848 /* disable hotkey polling when possible */
1849 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1850 hotkey_poll_setup_safe(0);
1851}
01e88f25 1852
a0416420
HMH		 1853/* sysfs hotkey enable ------------------------------------------------- */
1854static ssize_t hotkey_enable_show(struct device *dev,
1855 struct device_attribute *attr,
1856 char *buf)
1857{
ae92bd17 1858 int res, status;
a0416420 1859
b2c985e7 1860 res = hotkey_status_get(&status);
a0416420
HMH		 1861 if (res)
1862 return res;
1863
1864 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1865}
1866
1867static ssize_t hotkey_enable_store(struct device *dev,
1868 struct device_attribute *attr,
1869 const char *buf, size_t count)
1870{
1871 unsigned long t;
b2c985e7 1872 int res;
a0416420
HMH		 1873
1874 if (parse_strtoul(buf, 1, &t))
1875 return -EINVAL;
1876
b2c985e7 1877 res = hotkey_status_set(t);
a0416420
HMH		 1878
1879 return (res) ? res : count;
1880}
1881
1882static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 1883 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 1884 hotkey_enable_show, hotkey_enable_store);
1885
1886/* sysfs hotkey mask --------------------------------------------------- */
1887static ssize_t hotkey_mask_show(struct device *dev,
1888 struct device_attribute *attr,
1889 char *buf)
1890{
b2c985e7 1891 int res;
a0416420 1892
7646ea88 1893 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 1894 return -ERESTARTSYS;
1895 res = hotkey_mask_get();
1896 mutex_unlock(&hotkey_mutex);
a0416420 1897
b2c985e7
HMH		 1898 return (res)?
1899 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
a0416420
HMH		 1900}
1901
1902static ssize_t hotkey_mask_store(struct device *dev,
1903 struct device_attribute *attr,
1904 const char *buf, size_t count)
1905{
1906 unsigned long t;
b2c985e7 1907 int res;
a0416420 1908
ae92bd17 1909 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 1910 return -EINVAL;
1911
7646ea88 1912 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 1913 return -ERESTARTSYS;
1914
1915 res = hotkey_mask_set(t);
01e88f25
HMH		 1916
1917#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1918 hotkey_poll_setup(1);
1919#endif
1920
b2c985e7 1921 mutex_unlock(&hotkey_mutex);
a0416420
HMH		 1922
1923 return (res) ? res : count;
1924}
1925
1926static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 1927 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 1928 hotkey_mask_show, hotkey_mask_store);
1929
1930/* sysfs hotkey bios_enabled ------------------------------------------- */
1931static ssize_t hotkey_bios_enabled_show(struct device *dev,
1932 struct device_attribute *attr,
1933 char *buf)
1934{
1935 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
1936}
1937
1938static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 1939 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 1940
1941/* sysfs hotkey bios_mask ---------------------------------------------- */
1942static ssize_t hotkey_bios_mask_show(struct device *dev,
1943 struct device_attribute *attr,
1944 char *buf)
1945{
ae92bd17 1946 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 1947}
1948
1949static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 1950 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 1951
9b010de5
HMH		 1952/* sysfs hotkey all_mask ----------------------------------------------- */
1953static ssize_t hotkey_all_mask_show(struct device *dev,
1954 struct device_attribute *attr,
1955 char *buf)
1956{
01e88f25
HMH		 1957 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1958 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 1959}
1960
1961static struct device_attribute dev_attr_hotkey_all_mask =
1962 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
1963
1964/* sysfs hotkey recommended_mask --------------------------------------- */
1965static ssize_t hotkey_recommended_mask_show(struct device *dev,
1966 struct device_attribute *attr,
1967 char *buf)
1968{
1969 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 1970 (hotkey_all_mask | hotkey_source_mask)
1971 & ~hotkey_reserved_mask);
9b010de5
HMH		 1972}
1973
1974static struct device_attribute dev_attr_hotkey_recommended_mask =
1975 __ATTR(hotkey_recommended_mask, S_IRUGO,
1976 hotkey_recommended_mask_show, NULL);
1977
01e88f25
HMH		 1978#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1979
1980/* sysfs hotkey hotkey_source_mask ------------------------------------- */
1981static ssize_t hotkey_source_mask_show(struct device *dev,
1982 struct device_attribute *attr,
1983 char *buf)
1984{
1985 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
1986}
1987
1988static ssize_t hotkey_source_mask_store(struct device *dev,
1989 struct device_attribute *attr,
1990 const char *buf, size_t count)
1991{
1992 unsigned long t;
1993
1994 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
1995 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
1996 return -EINVAL;
1997
7646ea88 1998 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 1999 return -ERESTARTSYS;
2000
2001 HOTKEY_CONFIG_CRITICAL_START
2002 hotkey_source_mask = t;
2003 HOTKEY_CONFIG_CRITICAL_END
2004
2005 hotkey_poll_setup(1);
2006
2007 mutex_unlock(&hotkey_mutex);
2008
2009 return count;
2010}
2011
2012static struct device_attribute dev_attr_hotkey_source_mask =
2013 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2014 hotkey_source_mask_show, hotkey_source_mask_store);
2015
2016/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2017static ssize_t hotkey_poll_freq_show(struct device *dev,
2018 struct device_attribute *attr,
2019 char *buf)
2020{
2021 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2022}
2023
2024static ssize_t hotkey_poll_freq_store(struct device *dev,
2025 struct device_attribute *attr,
2026 const char *buf, size_t count)
2027{
2028 unsigned long t;
2029
2030 if (parse_strtoul(buf, 25, &t))
2031 return -EINVAL;
2032
7646ea88 2033 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2034 return -ERESTARTSYS;
2035
2036 hotkey_poll_freq = t;
2037
2038 hotkey_poll_setup(1);
2039 mutex_unlock(&hotkey_mutex);
2040
2041 return count;
2042}
2043
2044static struct device_attribute dev_attr_hotkey_poll_freq =
2045 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2046 hotkey_poll_freq_show, hotkey_poll_freq_store);
2047
2048#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2049
50ebec09 2050/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2051static ssize_t hotkey_radio_sw_show(struct device *dev,
2052 struct device_attribute *attr,
2053 char *buf)
2054{
2055 int res, s;
2056 res = hotkey_get_wlsw(&s);
2057 if (res < 0)
2058 return res;
2059
2060 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2061}
2062
2063static struct device_attribute dev_attr_hotkey_radio_sw =
2064 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2065
50ebec09
HMH		 2066static void hotkey_radio_sw_notify_change(void)
2067{
2068 if (tp_features.hotkey_wlsw)
2069 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2070 "hotkey_radio_sw");
2071}
2072
6c231bd5
HMH		 2073/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2074static ssize_t hotkey_tablet_mode_show(struct device *dev,
2075 struct device_attribute *attr,
2076 char *buf)
2077{
2078 int res, s;
2079 res = hotkey_get_tablet_mode(&s);
2080 if (res < 0)
2081 return res;
2082
2083 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2084}
2085
2086static struct device_attribute dev_attr_hotkey_tablet_mode =
2087 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2088
2089static void hotkey_tablet_mode_notify_change(void)
2090{
2091 if (tp_features.hotkey_tablet)
2092 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2093 "hotkey_tablet_mode");
2094}
2095
ff80f137
HMH		 2096/* sysfs hotkey report_mode -------------------------------------------- */
2097static ssize_t hotkey_report_mode_show(struct device *dev,
2098 struct device_attribute *attr,
2099 char *buf)
2100{
2101 return snprintf(buf, PAGE_SIZE, "%d\n",
2102 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2103}
2104
2105static struct device_attribute dev_attr_hotkey_report_mode =
2106 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2107
50ebec09 2108/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2109static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2110 struct device_attribute *attr,
2111 char *buf)
2112{
2113 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2114}
2115
2116static struct device_attribute dev_attr_hotkey_wakeup_reason =
2117 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2118
1d5a2b54 2119static void hotkey_wakeup_reason_notify_change(void)
50ebec09
HMH		 2120{
2121 if (tp_features.hotkey_mask)
2122 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2123 "wakeup_reason");
2124}
2125
2126/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2127static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2128 struct device_attribute *attr,
2129 char *buf)
2130{
2131 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2132}
2133
2134static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2135 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2136 hotkey_wakeup_hotunplug_complete_show, NULL);
2137
1d5a2b54 2138static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09
HMH		 2139{
2140 if (tp_features.hotkey_mask)
2141 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2142 "wakeup_hotunplug_complete");
2143}
2144
a0416420
HMH		 2145/* --------------------------------------------------------------------- */
2146
ff80f137
HMH		 2147static struct attribute *hotkey_attributes[] __initdata = {
2148 &dev_attr_hotkey_enable.attr,
01e88f25 2149 &dev_attr_hotkey_bios_enabled.attr,
ff80f137 2150 &dev_attr_hotkey_report_mode.attr,
01e88f25
HMH		 2151#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2152 &dev_attr_hotkey_mask.attr,
2153 &dev_attr_hotkey_all_mask.attr,
2154 &dev_attr_hotkey_recommended_mask.attr,
2155 &dev_attr_hotkey_source_mask.attr,
2156 &dev_attr_hotkey_poll_freq.attr,
2157#endif
ff80f137
HMH		 2158};
2159
2160static struct attribute *hotkey_mask_attributes[] __initdata = {
a0416420 2161 &dev_attr_hotkey_bios_mask.attr,
01e88f25
HMH		 2162#ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2163 &dev_attr_hotkey_mask.attr,
9b010de5
HMH		 2164 &dev_attr_hotkey_all_mask.attr,
2165 &dev_attr_hotkey_recommended_mask.attr,
01e88f25 2166#endif
a713b4d7
HMH		 2167 &dev_attr_hotkey_wakeup_reason.attr,
2168 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
a0416420
HMH		 2169};
2170
0e74dc26
HMH		 2171static void bluetooth_update_rfk(void);
2172static void wan_update_rfk(void);
0045c0aa 2173static void uwb_update_rfk(void);
733e27c1
HMH		 2174static void tpacpi_send_radiosw_update(void)
2175{
2176 int wlsw;
2177
0e74dc26
HMH		 2178 /* Sync these BEFORE sending any rfkill events */
2179 if (tp_features.bluetooth)
2180 bluetooth_update_rfk();
2181 if (tp_features.wan)
2182 wan_update_rfk();
0045c0aa
HMH		 2183 if (tp_features.uwb)
2184 uwb_update_rfk();
0e74dc26 2185
733e27c1
HMH		 2186 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
2187 mutex_lock(&tpacpi_inputdev_send_mutex);
2188
2189 input_report_switch(tpacpi_inputdev,
2190 SW_RFKILL_ALL, !!wlsw);
2191 input_sync(tpacpi_inputdev);
2192
2193 mutex_unlock(&tpacpi_inputdev_send_mutex);
2194 }
2195 hotkey_radio_sw_notify_change();
2196}
2197
9c0a76e1
HMH		 2198static void hotkey_exit(void)
2199{
2200#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2201 hotkey_poll_stop_sync();
2202#endif
2203
2204 if (hotkey_dev_attributes)
2205 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2206
2207 kfree(hotkey_keycode_map);
2208
2209 if (tp_features.hotkey) {
2210 dbg_printk(TPACPI_DBG_EXIT,
2211 "restoring original hot key mask\n");
2212 /* no short-circuit boolean operator below! */
2213 if ((hotkey_mask_set(hotkey_orig_mask) |
2214 hotkey_status_set(hotkey_orig_status)) != 0)
2215 printk(TPACPI_ERR
2216 "failed to restore hot key mask "
2217 "to BIOS defaults\n");
2218 }
2219}
2220
a5763f22 2221static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 2222{
0f089147
HMH		 2223 /* Requirements for changing the default keymaps:
2224 *
2225 * 1. Many of the keys are mapped to KEY_RESERVED for very
2226 * good reasons. Do not change them unless you have deep
2227 * knowledge on the IBM and Lenovo ThinkPad firmware for
2228 * the various ThinkPad models. The driver behaves
2229 * differently for KEY_RESERVED: such keys have their
2230 * hot key mask *unset* in mask_recommended, and also
2231 * in the initial hot key mask programmed into the
2232 * firmware at driver load time, which means the firm-
2233 * ware may react very differently if you change them to
2234 * something else;
2235 *
2236 * 2. You must be subscribed to the linux-thinkpad and
2237 * ibm-acpi-devel mailing lists, and you should read the
2238 * list archives since 2007 if you want to change the
2239 * keymaps. This requirement exists so that you will
2240 * know the past history of problems with the thinkpad-
2241 * acpi driver keymaps, and also that you will be
2242 * listening to any bug reports;
2243 *
2244 * 3. Do not send thinkpad-acpi specific patches directly to
2245 * for merging, *ever*. Send them to the linux-acpi
2246 * mailinglist for comments. Merging is to be done only
2247 * through acpi-test and the ACPI maintainer.
2248 *
2249 * If the above is too much to ask, don't change the keymap.
2250 * Ask the thinkpad-acpi maintainer to do it, instead.
2251 */
edf0e0e5
HMH		 2252 static u16 ibm_keycode_map[] __initdata = {
2253 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2254 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
2255 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2256 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 2257
2258 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 2259 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2260 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2261 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147
HMH		 2262
2263 /* brightness: firmware always reacts to them, unless
2264 * X.org did some tricks in the radeon BIOS scratch
2265 * registers of *some* models */
e927c08d 2266 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 2267 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 2268
2269 /* Thinklight: firmware always react to it */
edf0e0e5 2270 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 2271
edf0e0e5
HMH		 2272 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2273 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 2274
2275 /* Volume: firmware always react to it and reprograms
2276 * the built-in *extra* mixer. Never map it to control
2277 * another mixer by default. */
e927c08d
HMH		 2278 KEY_RESERVED, /* 0x14: VOLUME UP */
2279 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2280 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2281
edf0e0e5 2282 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2283
edf0e0e5
HMH		 2284 /* (assignments unknown, please report if found) */
2285 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2286 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2287 };
2288 static u16 lenovo_keycode_map[] __initdata = {
2289 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2290 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2291 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2292 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 2293
2294 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 2295 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2296 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2297 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 2298
b5972796
HMH		 2299 /* These either have to go through ACPI video, or
2300 * act like in the IBM ThinkPads, so don't ever
2301 * enable them by default */
56a185b4 2302 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
56a185b4 2303 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147 2304
edf0e0e5 2305 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 2306
edf0e0e5
HMH		 2307 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2308 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 2309
2310 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2311 * react to it and reprograms the built-in *extra* mixer.
2312 * Never map it to control another mixer by default.
2313 *
2314 * T60?, T61, R60?, R61: firmware and EC tries to send
2315 * these over the regular keyboard, so these are no-ops,
2316 * but there are still weird bugs re. MUTE, so do not
2317 * change unless you get test reports from all Lenovo
2318 * models. May cause the BIOS to interfere with the
2319 * HDA mixer.
2320 */
e927c08d
HMH		 2321 KEY_RESERVED, /* 0x14: VOLUME UP */
2322 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2323 KEY_RESERVED, /* 0x16: MUTE */
0f089147 2324
edf0e0e5 2325 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 2326
edf0e0e5
HMH		 2327 /* (assignments unknown, please report if found) */
2328 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2329 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2330 };
2331
2332#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2333#define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2334#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2335
6a38abbf 2336 int res, i;
74941a69 2337 int status;
1b6521dc 2338 int hkeyv;
b86c4722 2339
fe08bc4b
HMH		 2340 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
2341
6a38abbf 2342 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 2343 BUG_ON(tpacpi_inputdev->open != NULL ||
2344 tpacpi_inputdev->close != NULL);
6a38abbf 2345
e0c7dfe7 2346 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 2347 mutex_init(&hotkey_mutex);
5fba344c 2348
01e88f25
HMH		 2349#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2350 mutex_init(&hotkey_thread_mutex);
2351 mutex_init(&hotkey_thread_data_mutex);
2352#endif
2353
56b6aeb0 2354 /* hotkey not supported on 570 */
d8fd94d9 2355 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 2356
fe08bc4b 2357 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
d8fd94d9 2358 str_supported(tp_features.hotkey));
fe08bc4b 2359
9c0a76e1
HMH		 2360 if (!tp_features.hotkey)
2361 return 1;
a0416420 2362
d64c81c4
HMH		 2363 tpacpi_disable_brightness_delay();
2364
9c0a76e1
HMH		 2365 hotkey_dev_attributes = create_attr_set(13, NULL);
2366 if (!hotkey_dev_attributes)
2367 return -ENOMEM;
2368 res = add_many_to_attr_set(hotkey_dev_attributes,
2369 hotkey_attributes,
2370 ARRAY_SIZE(hotkey_attributes));
2371 if (res)
2372 goto err_exit;
2373
2374 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2375 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2376 for HKEY interface version 0x100 */
2377 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
2378 if ((hkeyv >> 8) != 1) {
2379 printk(TPACPI_ERR "unknown version of the "
2380 "HKEY interface: 0x%x\n", hkeyv);
2381 printk(TPACPI_ERR "please report this to %s\n",
2382 TPACPI_MAIL);
2383 } else {
2384 /*
2385 * MHKV 0x100 in A31, R40, R40e,
2386 * T4x, X31, and later
2387 */
2388 tp_features.hotkey_mask = 1;
1b6521dc 2389 }
9c0a76e1 2390 }
56b6aeb0 2391
9c0a76e1
HMH		 2392 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
2393 str_supported(tp_features.hotkey_mask));
fe08bc4b 2394
9c0a76e1
HMH		 2395 if (tp_features.hotkey_mask) {
2396 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
2397 "MHKA", "qd")) {
2398 printk(TPACPI_ERR
2399 "missing MHKA handler, "
2400 "please report this to %s\n",
2401 TPACPI_MAIL);
2402 /* FN+F12, FN+F4, FN+F3 */
2403 hotkey_all_mask = 0x080cU;
9b010de5 2404 }
9c0a76e1 2405 }
9b010de5 2406
9c0a76e1
HMH		 2407 /* hotkey_source_mask *must* be zero for
2408 * the first hotkey_mask_get */
2409 res = hotkey_status_get(&hotkey_orig_status);
2410 if (res)
2411 goto err_exit;
2412
2413 if (tp_features.hotkey_mask) {
2414 res = hotkey_mask_get();
2415 if (res)
2416 goto err_exit;
2417
2418 hotkey_orig_mask = hotkey_mask;
2419 res = add_many_to_attr_set(
2420 hotkey_dev_attributes,
2421 hotkey_mask_attributes,
2422 ARRAY_SIZE(hotkey_mask_attributes));
2423 if (res)
2424 goto err_exit;
2425 }
74941a69 2426
01e88f25 2427#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
9c0a76e1
HMH		 2428 if (tp_features.hotkey_mask) {
2429 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
2430 & ~hotkey_all_mask;
2431 } else {
2432 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
2433 }
01e88f25 2434
9c0a76e1
HMH		 2435 vdbg_printk(TPACPI_DBG_INIT,
2436 "hotkey source mask 0x%08x, polling freq %d\n",
2437 hotkey_source_mask, hotkey_poll_freq);
01e88f25
HMH		 2438#endif
2439
a73f3091
HMH		 2440#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2441 if (dbg_wlswemul) {
2442 tp_features.hotkey_wlsw = 1;
2443 printk(TPACPI_INFO
2444 "radio switch emulation enabled\n");
2445 } else
2446#endif
9c0a76e1
HMH		 2447 /* Not all thinkpads have a hardware radio switch */
2448 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
2449 tp_features.hotkey_wlsw = 1;
2450 printk(TPACPI_INFO
2451 "radio switch found; radios are %s\n",
2452 enabled(status, 0));
3a872080
HMH		 2453 }
2454 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 2455 res = add_to_attr_set(hotkey_dev_attributes,
2456 &dev_attr_hotkey_radio_sw.attr);
74941a69 2457
9c0a76e1
HMH		 2458 /* For X41t, X60t, X61t Tablets... */
2459 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
2460 tp_features.hotkey_tablet = 1;
2461 printk(TPACPI_INFO
2462 "possible tablet mode switch found; "
2463 "ThinkPad in %s mode\n",
2464 (status & TP_HOTKEY_TABLET_MASK)?
2465 "tablet" : "laptop");
2466 res = add_to_attr_set(hotkey_dev_attributes,
2467 &dev_attr_hotkey_tablet_mode.attr);
2468 }
6c231bd5 2469
9c0a76e1
HMH		 2470 if (!res)
2471 res = register_attr_set_with_sysfs(
2472 hotkey_dev_attributes,
2473 &tpacpi_pdev->dev.kobj);
2474 if (res)
2475 goto err_exit;
6a38abbf 2476
9c0a76e1 2477 /* Set up key map */
edf0e0e5 2478
9c0a76e1
HMH		 2479 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
2480 GFP_KERNEL);
2481 if (!hotkey_keycode_map) {
2482 printk(TPACPI_ERR
2483 "failed to allocate memory for key map\n");
2484 res = -ENOMEM;
2485 goto err_exit;
2486 }
edf0e0e5 2487
9c0a76e1
HMH		 2488 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
2489 dbg_printk(TPACPI_DBG_INIT,
2490 "using Lenovo default hot key map\n");
2491 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
2492 TPACPI_HOTKEY_MAP_SIZE);
2493 } else {
2494 dbg_printk(TPACPI_DBG_INIT,
2495 "using IBM default hot key map\n");
2496 memcpy(hotkey_keycode_map, &ibm_keycode_map,
2497 TPACPI_HOTKEY_MAP_SIZE);
2498 }
edf0e0e5 2499
9c0a76e1
HMH		 2500 set_bit(EV_KEY, tpacpi_inputdev->evbit);
2501 set_bit(EV_MSC, tpacpi_inputdev->evbit);
2502 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
2503 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
2504 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
2505 tpacpi_inputdev->keycode = hotkey_keycode_map;
2506 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
2507 if (hotkey_keycode_map[i] != KEY_RESERVED) {
2508 set_bit(hotkey_keycode_map[i],
2509 tpacpi_inputdev->keybit);
2510 } else {
2511 if (i < sizeof(hotkey_reserved_mask)*8)
2512 hotkey_reserved_mask |= 1 << i;
6a38abbf 2513 }
9c0a76e1 2514 }
6a38abbf 2515
9c0a76e1
HMH		 2516 if (tp_features.hotkey_wlsw) {
2517 set_bit(EV_SW, tpacpi_inputdev->evbit);
2518 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit);
2519 }
2520 if (tp_features.hotkey_tablet) {
2521 set_bit(EV_SW, tpacpi_inputdev->evbit);
2522 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
2523 }
5c29d58f 2524
9c0a76e1
HMH		 2525 /* Do not issue duplicate brightness change events to
2526 * userspace */
2527 if (!tp_features.bright_acpimode)
2528 /* update bright_acpimode... */
2529 tpacpi_check_std_acpi_brightness_support();
b5972796 2530
9c0a76e1
HMH		 2531 if (tp_features.bright_acpimode) {
2532 printk(TPACPI_INFO
2533 "This ThinkPad has standard ACPI backlight "
2534 "brightness control, supported by the ACPI "
2535 "video driver\n");
2536 printk(TPACPI_NOTICE
2537 "Disabling thinkpad-acpi brightness events "
2538 "by default...\n");
2539
2540 /* The hotkey_reserved_mask change below is not
2541 * necessary while the keys are at KEY_RESERVED in the
2542 * default map, but better safe than sorry, leave it
2543 * here as a marker of what we have to do, especially
2544 * when we finally become able to set this at runtime
2545 * on response to X.org requests */
2546 hotkey_reserved_mask |=
2547 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
2548 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
2549 }
ff80f137 2550
9c0a76e1
HMH		 2551 dbg_printk(TPACPI_DBG_INIT, "enabling hot key handling\n");
2552 res = hotkey_status_set(1);
2553 if (res) {
2554 hotkey_exit();
2555 return res;
2556 }
2557 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
2558 & ~hotkey_reserved_mask)
2559 | hotkey_orig_mask);
2560 if (res < 0 && res != -ENXIO) {
2561 hotkey_exit();
2562 return res;
2563 }
01e88f25 2564
9c0a76e1
HMH		 2565 dbg_printk(TPACPI_DBG_INIT,
2566 "legacy hot key reporting over procfs %s\n",
2567 (hotkey_report_mode < 2) ?
2568 "enabled" : "disabled");
01e88f25 2569
9c0a76e1
HMH		 2570 tpacpi_inputdev->open = &hotkey_inputdev_open;
2571 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 2572
9c0a76e1 2573 hotkey_poll_setup_safe(1);
733e27c1 2574 tpacpi_send_radiosw_update();
9c0a76e1 2575 tpacpi_input_send_tabletsw();
56b6aeb0 2576
9c0a76e1 2577 return 0;
01e88f25 2578
9c0a76e1
HMH		 2579err_exit:
2580 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2581 hotkey_dev_attributes = NULL;
a0416420 2582
9c0a76e1 2583 return (res < 0)? res : 1;
56b6aeb0
HMH		 2584}
2585
3827e7a3
HMH		 2586static bool hotkey_notify_hotkey(const u32 hkey,
2587 bool *send_acpi_ev,
2588 bool *ignore_acpi_ev)
2589{
2590 /* 0x1000-0x1FFF: key presses */
2591 unsigned int scancode = hkey & 0xfff;
2592 *send_acpi_ev = true;
2593 *ignore_acpi_ev = false;
2594
2595 if (scancode > 0 && scancode < 0x21) {
2596 scancode--;
2597 if (!(hotkey_source_mask & (1 << scancode))) {
2598 tpacpi_input_send_key(scancode);
2599 *send_acpi_ev = false;
2600 } else {
2601 *ignore_acpi_ev = true;
2602 }
2603 return true;
2604 }
2605 return false;
2606}
2607
2608static bool hotkey_notify_wakeup(const u32 hkey,
2609 bool *send_acpi_ev,
2610 bool *ignore_acpi_ev)
2611{
2612 /* 0x2000-0x2FFF: Wakeup reason */
2613 *send_acpi_ev = true;
2614 *ignore_acpi_ev = false;
2615
2616 switch (hkey) {
2617 case 0x2304: /* suspend, undock */
2618 case 0x2404: /* hibernation, undock */
2619 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
2620 *ignore_acpi_ev = true;
2621 break;
2622
2623 case 0x2305: /* suspend, bay eject */
2624 case 0x2405: /* hibernation, bay eject */
2625 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
2626 *ignore_acpi_ev = true;
2627 break;
2628
106b4e66
HMH		 2629 case 0x2313: /* Battery on critical low level (S3) */
2630 case 0x2413: /* Battery on critical low level (S4) */
2631 printk(TPACPI_ALERT
2632 "EMERGENCY WAKEUP: battery almost empty\n");
2633 /* how to auto-heal: */
2634 /* 2313: woke up from S3, go to S4/S5 */
2635 /* 2413: woke up from S4, go to S5 */
2636 break;
2637
3827e7a3
HMH		 2638 default:
2639 return false;
2640 }
2641
2642 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
2643 printk(TPACPI_INFO
2644 "woke up due to a hot-unplug "
2645 "request...\n");
2646 hotkey_wakeup_reason_notify_change();
2647 }
2648 return true;
2649}
2650
2651static bool hotkey_notify_usrevent(const u32 hkey,
2652 bool *send_acpi_ev,
2653 bool *ignore_acpi_ev)
2654{
2655 /* 0x5000-0x5FFF: human interface helpers */
2656 *send_acpi_ev = true;
2657 *ignore_acpi_ev = false;
2658
2659 switch (hkey) {
2660 case 0x5010: /* Lenovo new BIOS: brightness changed */
2661 case 0x500b: /* X61t: tablet pen inserted into bay */
2662 case 0x500c: /* X61t: tablet pen removed from bay */
2663 return true;
2664
2665 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2666 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2667 tpacpi_input_send_tabletsw();
2668 hotkey_tablet_mode_notify_change();
2669 *send_acpi_ev = false;
2670 return true;
2671
2672 case 0x5001:
2673 case 0x5002:
2674 /* LID switch events. Do not propagate */
2675 *ignore_acpi_ev = true;
2676 return true;
2677
2678 default:
2679 return false;
2680 }
2681}
2682
106b4e66
HMH		 2683static bool hotkey_notify_thermal(const u32 hkey,
2684 bool *send_acpi_ev,
2685 bool *ignore_acpi_ev)
2686{
2687 /* 0x6000-0x6FFF: thermal alarms */
2688 *send_acpi_ev = true;
2689 *ignore_acpi_ev = false;
2690
2691 switch (hkey) {
2692 case 0x6011:
2693 printk(TPACPI_CRIT
2694 "THERMAL ALARM: battery is too hot!\n");
2695 /* recommended action: warn user through gui */
2696 return true;
2697 case 0x6012:
2698 printk(TPACPI_ALERT
2699 "THERMAL EMERGENCY: battery is extremely hot!\n");
2700 /* recommended action: immediate sleep/hibernate */
2701 return true;
2702 case 0x6021:
2703 printk(TPACPI_CRIT
2704 "THERMAL ALARM: "
2705 "a sensor reports something is too hot!\n");
2706 /* recommended action: warn user through gui, that */
2707 /* some internal component is too hot */
2708 return true;
2709 case 0x6022:
2710 printk(TPACPI_ALERT
2711 "THERMAL EMERGENCY: "
2712 "a sensor reports something is extremely hot!\n");
2713 /* recommended action: immediate sleep/hibernate */
2714 return true;
54926ce8
HMH		 2715 case 0x6030:
2716 printk(TPACPI_INFO
2717 "EC reports that Thermal Table has changed\n");
2718 /* recommended action: do nothing, we don't have
2719 * Lenovo ATM information */
2720 return true;
106b4e66
HMH		 2721 default:
2722 printk(TPACPI_ALERT
2723 "THERMAL ALERT: unknown thermal alarm received\n");
2724 return false;
2725 }
2726}
2727
56b6aeb0
HMH		 2728static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2729{
6a38abbf 2730 u32 hkey;
3827e7a3
HMH		 2731 bool send_acpi_ev;
2732 bool ignore_acpi_ev;
2733 bool known_ev;
3eea123d
HMH		 2734
2735 if (event != 0x80) {
35ff8b9f
HMH		 2736 printk(TPACPI_ERR
2737 "unknown HKEY notification event %d\n", event);
3eea123d 2738 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 2739 acpi_bus_generate_netlink_event(
2740 ibm->acpi->device->pnp.device_class,
e0b36fc5 2741 dev_name(&ibm->acpi->device->dev),
35ff8b9f 2742 event, 0);
3eea123d
HMH		 2743 return;
2744 }
2745
2746 while (1) {
2747 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
e0c7dfe7 2748 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
3eea123d
HMH		 2749 return;
2750 }
2751
2752 if (hkey == 0) {
2753 /* queue empty */
2754 return;
2755 }
2756
3827e7a3
HMH		 2757 send_acpi_ev = true;
2758 ignore_acpi_ev = false;
56b6aeb0 2759
ff80f137
HMH		 2760 switch (hkey >> 12) {
2761 case 1:
2762 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 2763 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
2764 &ignore_acpi_ev);
ff80f137 2765 break;
a713b4d7 2766 case 2:
3827e7a3
HMH		 2767 /* 0x2000-0x2FFF: Wakeup reason */
2768 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
2769 &ignore_acpi_ev);
a713b4d7
HMH		 2770 break;
2771 case 3:
3827e7a3 2772 /* 0x3000-0x3FFF: bay-related wakeups */
a713b4d7
HMH		 2773 if (hkey == 0x3003) {
2774 hotkey_autosleep_ack = 1;
2775 printk(TPACPI_INFO
2776 "bay ejected\n");
50ebec09 2777 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 2778 known_ev = true;
a713b4d7 2779 } else {
3827e7a3 2780 known_ev = false;
a713b4d7
HMH		 2781 }
2782 break;
2783 case 4:
3827e7a3 2784 /* 0x4000-0x4FFF: dock-related wakeups */
a713b4d7
HMH		 2785 if (hkey == 0x4003) {
2786 hotkey_autosleep_ack = 1;
2787 printk(TPACPI_INFO
2788 "undocked\n");
50ebec09 2789 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 2790 known_ev = true;
a713b4d7 2791 } else {
3827e7a3 2792 known_ev = false;
a713b4d7
HMH		 2793 }
2794 break;
ff80f137 2795 case 5:
d1edb2b5 2796 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 2797 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
2798 &ignore_acpi_ev);
ff80f137 2799 break;
106b4e66
HMH		 2800 case 6:
2801 /* 0x6000-0x6FFF: thermal alarms */
2802 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
2803 &ignore_acpi_ev);
2804 break;
ff80f137
HMH		 2805 case 7:
2806 /* 0x7000-0x7FFF: misc */
2807 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
733e27c1 2808 tpacpi_send_radiosw_update();
3b64b51d 2809 send_acpi_ev = 0;
3827e7a3 2810 known_ev = true;
6a38abbf 2811 break;
6a38abbf 2812 }
ff80f137
HMH		 2813 /* fallthrough to default */
2814 default:
3827e7a3 2815 known_ev = false;
3b64b51d 2816 }
3827e7a3 2817 if (!known_ev) {
35ff8b9f
HMH		 2818 printk(TPACPI_NOTICE
2819 "unhandled HKEY event 0x%04x\n", hkey);
cb429358
HMH		 2820 printk(TPACPI_NOTICE
2821 "please report the conditions when this "
2822 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 2823 }
ff80f137 2824
3eea123d 2825 /* Legacy events */
35ff8b9f
HMH		 2826 if (!ignore_acpi_ev &&
2827 (send_acpi_ev || hotkey_report_mode < 2)) {
2828 acpi_bus_generate_proc_event(ibm->acpi->device,
2829 event, hkey);
3e5ce914 2830 }
ff80f137 2831
3eea123d 2832 /* netlink events */
3e5ce914 2833 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 2834 acpi_bus_generate_netlink_event(
2835 ibm->acpi->device->pnp.device_class,
e0b36fc5 2836 dev_name(&ibm->acpi->device->dev),
35ff8b9f 2837 event, hkey);
3eea123d 2838 }
56b6aeb0
HMH		 2839 }
2840}
2841
a713b4d7
HMH		 2842static void hotkey_suspend(pm_message_t state)
2843{
2844 /* Do these on suspend, we get the events on early resume! */
2845 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
2846 hotkey_autosleep_ack = 0;
2847}
2848
5c29d58f
HMH		 2849static void hotkey_resume(void)
2850{
d64c81c4
HMH		 2851 tpacpi_disable_brightness_delay();
2852
b2c985e7 2853 if (hotkey_mask_get())
35ff8b9f
HMH		 2854 printk(TPACPI_ERR
2855 "error while trying to read hot key mask "
2856 "from firmware\n");
733e27c1 2857 tpacpi_send_radiosw_update();
6c231bd5 2858 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 2859 hotkey_wakeup_reason_notify_change();
2860 hotkey_wakeup_hotunplug_complete_notify_change();
01e88f25 2861 hotkey_poll_setup_safe(0);
5c29d58f
HMH		 2862}
2863
a0416420 2864/* procfs -------------------------------------------------------------- */
78f81cc4 2865static int hotkey_read(char *p)
1da177e4 2866{
ae92bd17 2867 int res, status;
1da177e4
LT		 2868 int len = 0;
2869
d8fd94d9 2870 if (!tp_features.hotkey) {
78f81cc4
BD		 2871 len += sprintf(p + len, "status:\t\tnot supported\n");
2872 return len;
2873 }
2874
7646ea88 2875 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 2876 return -ERESTARTSYS;
b2c985e7
HMH		 2877 res = hotkey_status_get(&status);
2878 if (!res)
2879 res = hotkey_mask_get();
40ca9fdf 2880 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 2881 if (res)
2882 return res;
1da177e4
LT		 2883
2884 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
d8fd94d9 2885 if (tp_features.hotkey_mask) {
b2c985e7 2886 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
1da177e4
LT		 2887 len += sprintf(p + len,
2888 "commands:\tenable, disable, reset, <mask>\n");
2889 } else {
2890 len += sprintf(p + len, "mask:\t\tnot supported\n");
2891 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2892 }
2893
2894 return len;
2895}
2896
78f81cc4 2897static int hotkey_write(char *buf)
1da177e4 2898{
ae92bd17
HMH		 2899 int res, status;
2900 u32 mask;
1da177e4 2901 char *cmd;
1da177e4 2902
d8fd94d9 2903 if (!tp_features.hotkey)
1da177e4
LT		 2904 return -ENODEV;
2905
7646ea88 2906 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 2907 return -ERESTARTSYS;
40ca9fdf 2908
b2c985e7
HMH		 2909 status = -1;
2910 mask = hotkey_mask;
78f81cc4 2911
40ca9fdf 2912 res = 0;
1da177e4
LT		 2913 while ((cmd = next_cmd(&buf))) {
2914 if (strlencmp(cmd, "enable") == 0) {
2915 status = 1;
2916 } else if (strlencmp(cmd, "disable") == 0) {
2917 status = 0;
2918 } else if (strlencmp(cmd, "reset") == 0) {
78f81cc4
BD		 2919 status = hotkey_orig_status;
2920 mask = hotkey_orig_mask;
1da177e4
LT		 2921 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2922 /* mask set */
2923 } else if (sscanf(cmd, "%x", &mask) == 1) {
2924 /* mask set */
40ca9fdf
HMH		 2925 } else {
2926 res = -EINVAL;
2927 goto errexit;
2928 }
1da177e4 2929 }
b2c985e7
HMH		 2930 if (status != -1)
2931 res = hotkey_status_set(status);
1da177e4 2932
b2c985e7
HMH		 2933 if (!res && mask != hotkey_mask)
2934 res = hotkey_mask_set(mask);
1da177e4 2935
40ca9fdf
HMH		 2936errexit:
2937 mutex_unlock(&hotkey_mutex);
2938 return res;
78f81cc4 2939}
1da177e4 2940
1ba90e3a 2941static const struct acpi_device_id ibm_htk_device_ids[] = {
e0c7dfe7 2942 {TPACPI_ACPI_HKEY_HID, 0},
1ba90e3a
TR		 2943 {"", 0},
2944};
2945
8d376cd6 2946static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 2947 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 2948 .notify = hotkey_notify,
2949 .handle = &hkey_handle,
2950 .type = ACPI_DEVICE_NOTIFY,
2951};
2952
a5763f22
HMH		 2953static struct ibm_struct hotkey_driver_data = {
2954 .name = "hotkey",
a5763f22
HMH		 2955 .read = hotkey_read,
2956 .write = hotkey_write,
2957 .exit = hotkey_exit,
5c29d58f 2958 .resume = hotkey_resume,
a713b4d7 2959 .suspend = hotkey_suspend,
8d376cd6 2960 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 2961};
2962
56b6aeb0
HMH		 2963/*************************************************************************
2964 * Bluetooth subdriver
2965 */
1da177e4 2966
f74a27d4
HMH		 2967enum {
2968 /* ACPI GBDC/SBDC bits */
2969 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
2970 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220
HMH		 2971 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
2972 off / last state */
2973};
2974
2975enum {
2976 /* ACPI \BLTH commands */
2977 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
2978 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
2979 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
2980 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
2981 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 2982};
2983
0e74dc26
HMH		 2984static struct rfkill *tpacpi_bluetooth_rfkill;
2985
153f8220
HMH		 2986static void bluetooth_suspend(pm_message_t state)
2987{
2988 /* Try to make sure radio will resume powered off */
2989 acpi_evalf(NULL, NULL, "\\BLTH", "vd",
2990 TP_ACPI_BLTH_PWR_OFF_ON_RESUME);
2991}
2992
07431ec8
HMH		 2993static int bluetooth_get_radiosw(void)
2994{
2995 int status;
2996
2997 if (!tp_features.bluetooth)
2998 return -ENODEV;
2999
133ec3bd
HMH		 3000 /* WLSW overrides bluetooth in firmware/hardware, reflect that */
3001 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
0e74dc26 3002 return RFKILL_STATE_HARD_BLOCKED;
133ec3bd 3003
a73f3091
HMH		 3004#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3005 if (dbg_bluetoothemul)
3006 return (tpacpi_bluetooth_emulstate) ?
3007 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3008#endif
3009
07431ec8
HMH		 3010 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3011 return -EIO;
3012
0e74dc26
HMH		 3013 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
3014 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
07431ec8
HMH		 3015}
3016
0e74dc26
HMH		 3017static void bluetooth_update_rfk(void)
3018{
3019 int status;
3020
3021 if (!tpacpi_bluetooth_rfkill)
3022 return;
3023
3024 status = bluetooth_get_radiosw();
3025 if (status < 0)
3026 return;
3027 rfkill_force_state(tpacpi_bluetooth_rfkill, status);
3028}
3029
3030static int bluetooth_set_radiosw(int radio_on, int update_rfk)
07431ec8
HMH		 3031{
3032 int status;
3033
3034 if (!tp_features.bluetooth)
3035 return -ENODEV;
3036
133ec3bd
HMH		 3037 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3038 * reason to risk weird behaviour. */
3039 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3040 && radio_on)
3041 return -EPERM;
3042
a73f3091
HMH		 3043#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3044 if (dbg_bluetoothemul) {
3045 tpacpi_bluetooth_emulstate = !!radio_on;
3046 if (update_rfk)
3047 bluetooth_update_rfk();
3048 return 0;
3049 }
3050#endif
3051
153f8220 3052 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
07431ec8 3053 if (radio_on)
153f8220 3054 status = TP_ACPI_BLUETOOTH_RADIOSSW;
07431ec8 3055 else
153f8220 3056 status = 0;
07431ec8
HMH		 3057 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3058 return -EIO;
3059
0e74dc26
HMH		 3060 if (update_rfk)
3061 bluetooth_update_rfk();
3062
07431ec8
HMH		 3063 return 0;
3064}
f74a27d4 3065
d3a6ade4
HMH		 3066/* sysfs bluetooth enable ---------------------------------------------- */
3067static ssize_t bluetooth_enable_show(struct device *dev,
3068 struct device_attribute *attr,
3069 char *buf)
3070{
3071 int status;
3072
3073 status = bluetooth_get_radiosw();
3074 if (status < 0)
3075 return status;
3076
0e74dc26
HMH		 3077 return snprintf(buf, PAGE_SIZE, "%d\n",
3078 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
d3a6ade4
HMH		 3079}
3080
3081static ssize_t bluetooth_enable_store(struct device *dev,
3082 struct device_attribute *attr,
3083 const char *buf, size_t count)
3084{
3085 unsigned long t;
3086 int res;
3087
3088 if (parse_strtoul(buf, 1, &t))
3089 return -EINVAL;
3090
0e74dc26 3091 res = bluetooth_set_radiosw(t, 1);
d3a6ade4
HMH		 3092
3093 return (res) ? res : count;
3094}
3095
3096static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 3097 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3098 bluetooth_enable_show, bluetooth_enable_store);
3099
3100/* --------------------------------------------------------------------- */
3101
3102static struct attribute *bluetooth_attributes[] = {
3103 &dev_attr_bluetooth_enable.attr,
3104 NULL
3105};
3106
3107static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 3108 .attrs = bluetooth_attributes,
3109};
3110
0e74dc26
HMH		 3111static int tpacpi_bluetooth_rfk_get(void *data, enum rfkill_state *state)
3112{
3113 int bts = bluetooth_get_radiosw();
3114
3115 if (bts < 0)
3116 return bts;
3117
3118 *state = bts;
3119 return 0;
3120}
3121
3122static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
3123{
3124 return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3125}
3126
90d9d3c7
HMH		 3127static void bluetooth_shutdown(void)
3128{
3129 /* Order firmware to save current state to NVRAM */
3130 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3131 TP_ACPI_BLTH_SAVE_STATE))
3132 printk(TPACPI_NOTICE
3133 "failed to save bluetooth state to NVRAM\n");
3134}
3135
07431ec8
HMH		 3136static void bluetooth_exit(void)
3137{
90d9d3c7
HMH		 3138 bluetooth_shutdown();
3139
0e74dc26
HMH		 3140 if (tpacpi_bluetooth_rfkill)
3141 rfkill_unregister(tpacpi_bluetooth_rfkill);
3142
07431ec8
HMH		 3143 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3144 &bluetooth_attr_group);
3145}
3146
a5763f22 3147static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 3148{
d3a6ade4 3149 int res;
d6fdd1e9
HMH		 3150 int status = 0;
3151
fe08bc4b
HMH		 3152 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
3153
e0c7dfe7 3154 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3155
78f81cc4
BD		 3156 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3157 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 3158 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 3159 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
3160
3161 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
3162 str_supported(tp_features.bluetooth),
3163 status);
3164
a73f3091
HMH		 3165#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3166 if (dbg_bluetoothemul) {
3167 tp_features.bluetooth = 1;
3168 printk(TPACPI_INFO
3169 "bluetooth switch emulation enabled\n");
3170 } else
3171#endif
3a872080
HMH		 3172 if (tp_features.bluetooth &&
3173 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
3174 /* no bluetooth hardware present in system */
3175 tp_features.bluetooth = 0;
3176 dbg_printk(TPACPI_DBG_INIT,
3177 "bluetooth hardware not installed\n");
3178 }
3179
0e74dc26
HMH		 3180 if (!tp_features.bluetooth)
3181 return 1;
3182
3183 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3a872080 3184 &bluetooth_attr_group);
0e74dc26
HMH		 3185 if (res)
3186 return res;
3187
3188 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
3189 &tpacpi_bluetooth_rfkill,
3190 RFKILL_TYPE_BLUETOOTH,
3191 "tpacpi_bluetooth_sw",
0045c0aa 3192 true,
0e74dc26
HMH		 3193 tpacpi_bluetooth_rfk_set,
3194 tpacpi_bluetooth_rfk_get);
3195 if (res) {
3196 bluetooth_exit();
3197 return res;
d6fdd1e9 3198 }
fe08bc4b 3199
0e74dc26 3200 return 0;
1da177e4
LT		 3201}
3202
d3a6ade4 3203/* procfs -------------------------------------------------------------- */
78f81cc4 3204static int bluetooth_read(char *p)
1da177e4
LT		 3205{
3206 int len = 0;
d6fdd1e9 3207 int status = bluetooth_get_radiosw();
1da177e4 3208
d8fd94d9 3209 if (!tp_features.bluetooth)
1da177e4 3210 len += sprintf(p + len, "status:\t\tnot supported\n");
1da177e4 3211 else {
d6fdd1e9 3212 len += sprintf(p + len, "status:\t\t%s\n",
0e74dc26
HMH		 3213 (status == RFKILL_STATE_UNBLOCKED) ?
3214 "enabled" : "disabled");
1da177e4
LT		 3215 len += sprintf(p + len, "commands:\tenable, disable\n");
3216 }
3217
3218 return len;
3219}
3220
78f81cc4 3221static int bluetooth_write(char *buf)
1da177e4 3222{
1da177e4 3223 char *cmd;
1da177e4 3224
d8fd94d9 3225 if (!tp_features.bluetooth)
78f81cc4 3226 return -ENODEV;
1da177e4
LT		 3227
3228 while ((cmd = next_cmd(&buf))) {
3229 if (strlencmp(cmd, "enable") == 0) {
0e74dc26 3230 bluetooth_set_radiosw(1, 1);
1da177e4 3231 } else if (strlencmp(cmd, "disable") == 0) {
0e74dc26 3232 bluetooth_set_radiosw(0, 1);
1da177e4
LT		 3233 } else
3234 return -EINVAL;
1da177e4
LT		 3235 }
3236
1da177e4
LT		 3237 return 0;
3238}
3239
a5763f22
HMH		 3240static struct ibm_struct bluetooth_driver_data = {
3241 .name = "bluetooth",
3242 .read = bluetooth_read,
3243 .write = bluetooth_write,
d3a6ade4 3244 .exit = bluetooth_exit,
153f8220 3245 .suspend = bluetooth_suspend,
90d9d3c7 3246 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 3247};
3248
56b6aeb0
HMH		 3249/*************************************************************************
3250 * Wan subdriver
3251 */
3252
f74a27d4
HMH		 3253enum {
3254 /* ACPI GWAN/SWAN bits */
3255 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
3256 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220
HMH		 3257 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
3258 off / last state */
f74a27d4
HMH		 3259};
3260
0e74dc26
HMH		 3261static struct rfkill *tpacpi_wan_rfkill;
3262
153f8220
HMH		 3263static void wan_suspend(pm_message_t state)
3264{
3265 /* Try to make sure radio will resume powered off */
3266 acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
3267 TP_ACPI_WGSV_PWR_OFF_ON_RESUME);
3268}
3269
07431ec8
HMH		 3270static int wan_get_radiosw(void)
3271{
3272 int status;
3273
3274 if (!tp_features.wan)
3275 return -ENODEV;
3276
133ec3bd
HMH		 3277 /* WLSW overrides WWAN in firmware/hardware, reflect that */
3278 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
0e74dc26 3279 return RFKILL_STATE_HARD_BLOCKED;
133ec3bd 3280
a73f3091
HMH		 3281#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3282 if (dbg_wwanemul)
3283 return (tpacpi_wwan_emulstate) ?
3284 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3285#endif
3286
07431ec8
HMH		 3287 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
3288 return -EIO;
3289
0e74dc26
HMH		 3290 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
3291 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
07431ec8
HMH		 3292}
3293
0e74dc26
HMH		 3294static void wan_update_rfk(void)
3295{
3296 int status;
3297
3298 if (!tpacpi_wan_rfkill)
3299 return;
3300
3301 status = wan_get_radiosw();
3302 if (status < 0)
3303 return;
3304 rfkill_force_state(tpacpi_wan_rfkill, status);
3305}
3306
3307static int wan_set_radiosw(int radio_on, int update_rfk)
07431ec8
HMH		 3308{
3309 int status;
3310
3311 if (!tp_features.wan)
3312 return -ENODEV;
3313
133ec3bd
HMH		 3314 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3315 * reason to risk weird behaviour. */
3316 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3317 && radio_on)
3318 return -EPERM;
3319
a73f3091
HMH		 3320#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3321 if (dbg_wwanemul) {
3322 tpacpi_wwan_emulstate = !!radio_on;
3323 if (update_rfk)
3324 wan_update_rfk();
3325 return 0;
3326 }
3327#endif
3328
153f8220 3329 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
07431ec8 3330 if (radio_on)
153f8220 3331 status = TP_ACPI_WANCARD_RADIOSSW;
07431ec8 3332 else
153f8220 3333 status = 0;
07431ec8
HMH		 3334 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
3335 return -EIO;
3336
0e74dc26
HMH		 3337 if (update_rfk)
3338 wan_update_rfk();
3339
07431ec8
HMH		 3340 return 0;
3341}
f74a27d4 3342
d3a6ade4
HMH		 3343/* sysfs wan enable ---------------------------------------------------- */
3344static ssize_t wan_enable_show(struct device *dev,
3345 struct device_attribute *attr,
3346 char *buf)
3347{
3348 int status;
3349
3350 status = wan_get_radiosw();
3351 if (status < 0)
3352 return status;
3353
0e74dc26
HMH		 3354 return snprintf(buf, PAGE_SIZE, "%d\n",
3355 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
d3a6ade4
HMH		 3356}
3357
3358static ssize_t wan_enable_store(struct device *dev,
3359 struct device_attribute *attr,
3360 const char *buf, size_t count)
3361{
3362 unsigned long t;
3363 int res;
3364
3365 if (parse_strtoul(buf, 1, &t))
3366 return -EINVAL;
3367
0e74dc26 3368 res = wan_set_radiosw(t, 1);
d3a6ade4
HMH		 3369
3370 return (res) ? res : count;
3371}
3372
3373static struct device_attribute dev_attr_wan_enable =
cc4c24e1 3374 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3375 wan_enable_show, wan_enable_store);
3376
3377/* --------------------------------------------------------------------- */
3378
3379static struct attribute *wan_attributes[] = {
3380 &dev_attr_wan_enable.attr,
3381 NULL
3382};
3383
3384static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 3385 .attrs = wan_attributes,
3386};
3387
0e74dc26
HMH		 3388static int tpacpi_wan_rfk_get(void *data, enum rfkill_state *state)
3389{
3390 int wans = wan_get_radiosw();
3391
3392 if (wans < 0)
3393 return wans;
3394
3395 *state = wans;
3396 return 0;
3397}
3398
3399static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
3400{
3401 return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3402}
3403
90d9d3c7
HMH		 3404static void wan_shutdown(void)
3405{
3406 /* Order firmware to save current state to NVRAM */
3407 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
3408 TP_ACPI_WGSV_SAVE_STATE))
3409 printk(TPACPI_NOTICE
3410 "failed to save WWAN state to NVRAM\n");
3411}
3412
07431ec8
HMH		 3413static void wan_exit(void)
3414{
90d9d3c7
HMH		 3415 wan_shutdown();
3416
0e74dc26
HMH		 3417 if (tpacpi_wan_rfkill)
3418 rfkill_unregister(tpacpi_wan_rfkill);
3419
07431ec8
HMH		 3420 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3421 &wan_attr_group);
3422}
3423
a5763f22 3424static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 3425{
d3a6ade4 3426 int res;
d6fdd1e9
HMH		 3427 int status = 0;
3428
fe08bc4b
HMH		 3429 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
3430
e0c7dfe7 3431 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3432
d8fd94d9 3433 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 3434 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
3435
3436 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
3437 str_supported(tp_features.wan),
3438 status);
3439
a73f3091
HMH		 3440#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3441 if (dbg_wwanemul) {
3442 tp_features.wan = 1;
3443 printk(TPACPI_INFO
3444 "wwan switch emulation enabled\n");
3445 } else
3446#endif
3a872080
HMH		 3447 if (tp_features.wan &&
3448 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
3449 /* no wan hardware present in system */
3450 tp_features.wan = 0;
3451 dbg_printk(TPACPI_DBG_INIT,
3452 "wan hardware not installed\n");
3453 }
3454
0e74dc26
HMH		 3455 if (!tp_features.wan)
3456 return 1;
3457
3458 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3a872080 3459 &wan_attr_group);
0e74dc26
HMH		 3460 if (res)
3461 return res;
3462
3463 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
3464 &tpacpi_wan_rfkill,
3465 RFKILL_TYPE_WWAN,
3466 "tpacpi_wwan_sw",
0045c0aa 3467 true,
0e74dc26
HMH		 3468 tpacpi_wan_rfk_set,
3469 tpacpi_wan_rfk_get);
3470 if (res) {
3471 wan_exit();
3472 return res;
d6fdd1e9 3473 }
fe08bc4b 3474
0e74dc26 3475 return 0;
42adb53c
JF		 3476}
3477
d3a6ade4 3478/* procfs -------------------------------------------------------------- */
42adb53c
JF		 3479static int wan_read(char *p)
3480{
3481 int len = 0;
d6fdd1e9 3482 int status = wan_get_radiosw();
42adb53c 3483
d8fd94d9 3484 if (!tp_features.wan)
42adb53c 3485 len += sprintf(p + len, "status:\t\tnot supported\n");
42adb53c 3486 else {
d6fdd1e9 3487 len += sprintf(p + len, "status:\t\t%s\n",
0e74dc26
HMH		 3488 (status == RFKILL_STATE_UNBLOCKED) ?
3489 "enabled" : "disabled");
42adb53c
JF		 3490 len += sprintf(p + len, "commands:\tenable, disable\n");
3491 }
3492
3493 return len;
3494}
3495
3496static int wan_write(char *buf)
3497{
42adb53c 3498 char *cmd;
42adb53c 3499
d8fd94d9 3500 if (!tp_features.wan)
42adb53c
JF		 3501 return -ENODEV;
3502
3503 while ((cmd = next_cmd(&buf))) {
3504 if (strlencmp(cmd, "enable") == 0) {
0e74dc26 3505 wan_set_radiosw(1, 1);
42adb53c 3506 } else if (strlencmp(cmd, "disable") == 0) {
0e74dc26 3507 wan_set_radiosw(0, 1);
42adb53c
JF		 3508 } else
3509 return -EINVAL;
42adb53c
JF		 3510 }
3511
42adb53c
JF		 3512 return 0;
3513}
3514
a5763f22
HMH		 3515static struct ibm_struct wan_driver_data = {
3516 .name = "wan",
3517 .read = wan_read,
3518 .write = wan_write,
d3a6ade4 3519 .exit = wan_exit,
153f8220 3520 .suspend = wan_suspend,
90d9d3c7 3521 .shutdown = wan_shutdown,
a5763f22
HMH		 3522};
3523
0045c0aa
HMH		 3524/*************************************************************************
3525 * UWB subdriver
3526 */
3527
3528enum {
3529 /* ACPI GUWB/SUWB bits */
3530 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
3531 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
3532};
3533
3534static struct rfkill *tpacpi_uwb_rfkill;
3535
3536static int uwb_get_radiosw(void)
3537{
3538 int status;
3539
3540 if (!tp_features.uwb)
3541 return -ENODEV;
3542
3543 /* WLSW overrides UWB in firmware/hardware, reflect that */
3544 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3545 return RFKILL_STATE_HARD_BLOCKED;
3546
3547#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3548 if (dbg_uwbemul)
3549 return (tpacpi_uwb_emulstate) ?
3550 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3551#endif
3552
3553 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
3554 return -EIO;
3555
3556 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
3557 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3558}
3559
3560static void uwb_update_rfk(void)
3561{
3562 int status;
3563
3564 if (!tpacpi_uwb_rfkill)
3565 return;
3566
3567 status = uwb_get_radiosw();
3568 if (status < 0)
3569 return;
3570 rfkill_force_state(tpacpi_uwb_rfkill, status);
3571}
3572
3573static int uwb_set_radiosw(int radio_on, int update_rfk)
3574{
3575 int status;
3576
3577 if (!tp_features.uwb)
3578 return -ENODEV;
3579
3580 /* WLSW overrides UWB in firmware/hardware, but there is no
3581 * reason to risk weird behaviour. */
3582 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3583 && radio_on)
3584 return -EPERM;
3585
3586#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3587 if (dbg_uwbemul) {
3588 tpacpi_uwb_emulstate = !!radio_on;
3589 if (update_rfk)
3590 uwb_update_rfk();
3591 return 0;
3592 }
3593#endif
3594
3595 status = (radio_on) ? TP_ACPI_UWB_RADIOSSW : 0;
3596 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
3597 return -EIO;
3598
3599 if (update_rfk)
3600 uwb_update_rfk();
3601
3602 return 0;
3603}
3604
3605/* --------------------------------------------------------------------- */
3606
3607static int tpacpi_uwb_rfk_get(void *data, enum rfkill_state *state)
3608{
3609 int uwbs = uwb_get_radiosw();
3610
3611 if (uwbs < 0)
3612 return uwbs;
3613
3614 *state = uwbs;
3615 return 0;
3616}
3617
3618static int tpacpi_uwb_rfk_set(void *data, enum rfkill_state state)
3619{
3620 return uwb_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3621}
3622
3623static void uwb_exit(void)
3624{
3625 if (tpacpi_uwb_rfkill)
3626 rfkill_unregister(tpacpi_uwb_rfkill);
3627}
3628
3629static int __init uwb_init(struct ibm_init_struct *iibm)
3630{
3631 int res;
3632 int status = 0;
3633
3634 vdbg_printk(TPACPI_DBG_INIT, "initializing uwb subdriver\n");
3635
3636 TPACPI_ACPIHANDLE_INIT(hkey);
3637
3638 tp_features.uwb = hkey_handle &&
3639 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
3640
3641 vdbg_printk(TPACPI_DBG_INIT, "uwb is %s, status 0x%02x\n",
3642 str_supported(tp_features.uwb),
3643 status);
3644
3645#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3646 if (dbg_uwbemul) {
3647 tp_features.uwb = 1;
3648 printk(TPACPI_INFO
3649 "uwb switch emulation enabled\n");
3650 } else
3651#endif
3652 if (tp_features.uwb &&
3653 !(status & TP_ACPI_UWB_HWPRESENT)) {
3654 /* no uwb hardware present in system */
3655 tp_features.uwb = 0;
3656 dbg_printk(TPACPI_DBG_INIT,
3657 "uwb hardware not installed\n");
3658 }
3659
3660 if (!tp_features.uwb)
3661 return 1;
3662
3663 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
3664 &tpacpi_uwb_rfkill,
3665 RFKILL_TYPE_UWB,
3666 "tpacpi_uwb_sw",
3667 false,
3668 tpacpi_uwb_rfk_set,
3669 tpacpi_uwb_rfk_get);
3670
3671 return res;
3672}
3673
3674static struct ibm_struct uwb_driver_data = {
3675 .name = "uwb",
3676 .exit = uwb_exit,
3677 .flags.experimental = 1,
3678};
3679
56b6aeb0
HMH		 3680/*************************************************************************
3681 * Video subdriver
3682 */
3683
d7c1d17d
HMH		 3684#ifdef CONFIG_THINKPAD_ACPI_VIDEO
3685
f74a27d4
HMH		 3686enum video_access_mode {
3687 TPACPI_VIDEO_NONE = 0,
3688 TPACPI_VIDEO_570, /* 570 */
3689 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
3690 TPACPI_VIDEO_NEW, /* all others */
3691};
3692
3693enum { /* video status flags, based on VIDEO_570 */
3694 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
3695 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
3696 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
3697};
3698
3699enum { /* TPACPI_VIDEO_570 constants */
3700 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
3701 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
3702 * video_status_flags */
3703 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
3704 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
3705};
3706
9a8e1738
HMH		 3707static enum video_access_mode video_supported;
3708static int video_orig_autosw;
78f81cc4 3709
f74a27d4
HMH		 3710static int video_autosw_get(void);
3711static int video_autosw_set(int enable);
3712
e0c7dfe7 3713TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 3714
a5763f22 3715static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 3716{
78f81cc4
BD		 3717 int ivga;
3718
fe08bc4b
HMH		 3719 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
3720
e0c7dfe7
HMH		 3721 TPACPI_ACPIHANDLE_INIT(vid);
3722 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 3723
78f81cc4
BD		 3724 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
3725 /* G41, assume IVGA doesn't change */
3726 vid_handle = vid2_handle;
3727
3728 if (!vid_handle)
3729 /* video switching not supported on R30, R31 */
efa27145 3730 video_supported = TPACPI_VIDEO_NONE;
78f81cc4
BD		 3731 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
3732 /* 570 */
efa27145 3733 video_supported = TPACPI_VIDEO_570;
78f81cc4
BD		 3734 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
3735 /* 600e/x, 770e, 770x */
efa27145 3736 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 3737 else
3738 /* all others */
efa27145 3739 video_supported = TPACPI_VIDEO_NEW;
1da177e4 3740
fe08bc4b
HMH		 3741 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
3742 str_supported(video_supported != TPACPI_VIDEO_NONE),
3743 video_supported);
3744
5fba344c 3745 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 3746}
3747
56b6aeb0
HMH		 3748static void video_exit(void)
3749{
83f34724
HMH		 3750 dbg_printk(TPACPI_DBG_EXIT,
3751 "restoring original video autoswitch mode\n");
3752 if (video_autosw_set(video_orig_autosw))
e0c7dfe7 3753 printk(TPACPI_ERR "error while trying to restore original "
83f34724 3754 "video autoswitch mode\n");
56b6aeb0
HMH		 3755}
3756
83f34724 3757static int video_outputsw_get(void)
1da177e4
LT		 3758{
3759 int status = 0;
3760 int i;
3761
83f34724
HMH		 3762 switch (video_supported) {
3763 case TPACPI_VIDEO_570:
3764 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
3765 TP_ACPI_VIDEO_570_PHSCMD))
3766 return -EIO;
3767 status = i & TP_ACPI_VIDEO_570_PHSMASK;
3768 break;
3769 case TPACPI_VIDEO_770:
3770 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
3771 return -EIO;
3772 if (i)
3773 status |= TP_ACPI_VIDEO_S_LCD;
3774 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
3775 return -EIO;
3776 if (i)
3777 status |= TP_ACPI_VIDEO_S_CRT;
3778 break;
3779 case TPACPI_VIDEO_NEW:
3780 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
3781 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
3782 return -EIO;
3783 if (i)
3784 status |= TP_ACPI_VIDEO_S_CRT;
3785
3786 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
3787 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
3788 return -EIO;
3789 if (i)
3790 status |= TP_ACPI_VIDEO_S_LCD;
3791 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
3792 return -EIO;
3793 if (i)
3794 status |= TP_ACPI_VIDEO_S_DVI;
3795 break;
3796 default:
3797 return -ENOSYS;
78f81cc4
BD		 3798 }
3799
3800 return status;
3801}
1da177e4 3802
83f34724 3803static int video_outputsw_set(int status)
78f81cc4 3804{
83f34724
HMH		 3805 int autosw;
3806 int res = 0;
3807
3808 switch (video_supported) {
3809 case TPACPI_VIDEO_570:
3810 res = acpi_evalf(NULL, NULL,
3811 "\\_SB.PHS2", "vdd",
3812 TP_ACPI_VIDEO_570_PHS2CMD,
3813 status | TP_ACPI_VIDEO_570_PHS2SET);
3814 break;
3815 case TPACPI_VIDEO_770:
3816 autosw = video_autosw_get();
3817 if (autosw < 0)
3818 return autosw;
1da177e4 3819
83f34724
HMH		 3820 res = video_autosw_set(1);
3821 if (res)
3822 return res;
3823 res = acpi_evalf(vid_handle, NULL,
3824 "ASWT", "vdd", status * 0x100, 0);
3825 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 3826 printk(TPACPI_ERR
3827 "video auto-switch left enabled due to error\n");
83f34724
HMH		 3828 return -EIO;
3829 }
3830 break;
3831 case TPACPI_VIDEO_NEW:
3832 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 3833 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 3834 break;
3835 default:
3836 return -ENOSYS;
3837 }
1da177e4 3838
83f34724 3839 return (res)? 0 : -EIO;
1da177e4
LT		 3840}
3841
83f34724 3842static int video_autosw_get(void)
78f81cc4 3843{
83f34724 3844 int autosw = 0;
78f81cc4 3845
83f34724
HMH		 3846 switch (video_supported) {
3847 case TPACPI_VIDEO_570:
3848 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
3849 return -EIO;
3850 break;
3851 case TPACPI_VIDEO_770:
3852 case TPACPI_VIDEO_NEW:
3853 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
3854 return -EIO;
3855 break;
3856 default:
3857 return -ENOSYS;
3858 }
78f81cc4 3859
83f34724 3860 return autosw & 1;
78f81cc4
BD		 3861}
3862
83f34724 3863static int video_autosw_set(int enable)
78f81cc4 3864{
83f34724
HMH		 3865 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
3866 return -EIO;
3867 return 0;
78f81cc4
BD		 3868}
3869
83f34724 3870static int video_outputsw_cycle(void)
78f81cc4 3871{
83f34724
HMH		 3872 int autosw = video_autosw_get();
3873 int res;
78f81cc4 3874
83f34724
HMH		 3875 if (autosw < 0)
3876 return autosw;
78f81cc4 3877
83f34724
HMH		 3878 switch (video_supported) {
3879 case TPACPI_VIDEO_570:
3880 res = video_autosw_set(1);
3881 if (res)
3882 return res;
3883 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
3884 break;
3885 case TPACPI_VIDEO_770:
3886 case TPACPI_VIDEO_NEW:
3887 res = video_autosw_set(1);
3888 if (res)
3889 return res;
3890 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
3891 break;
3892 default:
3893 return -ENOSYS;
3894 }
3895 if (!autosw && video_autosw_set(autosw)) {
35ff8b9f
HMH		 3896 printk(TPACPI_ERR
3897 "video auto-switch left enabled due to error\n");
83f34724 3898 return -EIO;
78f81cc4
BD		 3899 }
3900
83f34724
HMH		 3901 return (res)? 0 : -EIO;
3902}
3903
3904static int video_expand_toggle(void)
3905{
3906 switch (video_supported) {
3907 case TPACPI_VIDEO_570:
3908 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
3909 0 : -EIO;
3910 case TPACPI_VIDEO_770:
3911 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
3912 0 : -EIO;
3913 case TPACPI_VIDEO_NEW:
3914 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
3915 0 : -EIO;
3916 default:
3917 return -ENOSYS;
3918 }
3919 /* not reached */
78f81cc4
BD		 3920}
3921
56b6aeb0
HMH		 3922static int video_read(char *p)
3923{
83f34724 3924 int status, autosw;
56b6aeb0
HMH		 3925 int len = 0;
3926
83f34724 3927 if (video_supported == TPACPI_VIDEO_NONE) {
56b6aeb0
HMH		 3928 len += sprintf(p + len, "status:\t\tnot supported\n");
3929 return len;
3930 }
3931
83f34724
HMH		 3932 status = video_outputsw_get();
3933 if (status < 0)
3934 return status;
3935
3936 autosw = video_autosw_get();
3937 if (autosw < 0)
3938 return autosw;
3939
56b6aeb0
HMH		 3940 len += sprintf(p + len, "status:\t\tsupported\n");
3941 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
3942 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
efa27145 3943 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 3944 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
3945 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
3946 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
3947 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
efa27145 3948 if (video_supported == TPACPI_VIDEO_NEW)
56b6aeb0
HMH		 3949 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
3950 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
3951 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
3952
3953 return len;
3954}
3955
78f81cc4 3956static int video_write(char *buf)
1da177e4
LT		 3957{
3958 char *cmd;
3959 int enable, disable, status;
83f34724 3960 int res;
1da177e4 3961
83f34724 3962 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 3963 return -ENODEV;
3964
83f34724
HMH		 3965 enable = 0;
3966 disable = 0;
1da177e4
LT		 3967
3968 while ((cmd = next_cmd(&buf))) {
3969 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 3970 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 3971 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 3972 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 3973 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 3974 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 3975 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 3976 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 3977 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 3978 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 3979 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 3980 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 3981 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 3982 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 3983 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 3984 res = video_autosw_set(1);
3985 if (res)
3986 return res;
1da177e4 3987 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 3988 res = video_autosw_set(0);
3989 if (res)
3990 return res;
1da177e4 3991 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 3992 res = video_outputsw_cycle();
3993 if (res)
3994 return res;
1da177e4 3995 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 3996 res = video_expand_toggle();
3997 if (res)
3998 return res;
1da177e4
LT		 3999 } else
4000 return -EINVAL;
4001 }
4002
4003 if (enable || disable) {
83f34724
HMH		 4004 status = video_outputsw_get();
4005 if (status < 0)
4006 return status;
4007 res = video_outputsw_set((status & ~disable) | enable);
4008 if (res)
4009 return res;
1da177e4
LT		 4010 }
4011
4012 return 0;
4013}
4014
a5763f22
HMH		 4015static struct ibm_struct video_driver_data = {
4016 .name = "video",
4017 .read = video_read,
4018 .write = video_write,
4019 .exit = video_exit,
4020};
4021
d7c1d17d
HMH		 4022#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4023
56b6aeb0
HMH		 4024/*************************************************************************
4025 * Light (thinklight) subdriver
4026 */
1da177e4 4027
e0c7dfe7
HMH		 4028TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4029TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4030
4fa6811b
HMH		 4031static int light_get_status(void)
4032{
4033 int status = 0;
4034
4035 if (tp_features.light_status) {
4036 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4037 return -EIO;
4038 return (!!status);
4039 }
4040
4041 return -ENXIO;
4042}
4043
4044static int light_set_status(int status)
4045{
4046 int rc;
4047
4048 if (tp_features.light) {
4049 if (cmos_handle) {
4050 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4051 (status)?
4052 TP_CMOS_THINKLIGHT_ON :
4053 TP_CMOS_THINKLIGHT_OFF);
4054 } else {
4055 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4056 (status)? 1 : 0);
4057 }
4058 return (rc)? 0 : -EIO;
4059 }
4060
4061 return -ENXIO;
4062}
4063
e306501d
HMH		 4064static void light_set_status_worker(struct work_struct *work)
4065{
4066 struct tpacpi_led_classdev *data =
4067 container_of(work, struct tpacpi_led_classdev, work);
4068
4069 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4070 light_set_status((data->new_brightness != LED_OFF));
4071}
4072
4073static void light_sysfs_set(struct led_classdev *led_cdev,
4074 enum led_brightness brightness)
4075{
4076 struct tpacpi_led_classdev *data =
4077 container_of(led_cdev,
4078 struct tpacpi_led_classdev,
4079 led_classdev);
4080 data->new_brightness = brightness;
e0e3c061 4081 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4082}
4083
4084static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4085{
4086 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4087}
4088
4089static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4090 .led_classdev = {
4091 .name = "tpacpi::thinklight",
4092 .brightness_set = &light_sysfs_set,
4093 .brightness_get = &light_sysfs_get,
4094 }
4095};
4096
a5763f22 4097static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4098{
9c0a76e1 4099 int rc;
e306501d 4100
fe08bc4b
HMH		 4101 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4102
e0c7dfe7
HMH		 4103 TPACPI_ACPIHANDLE_INIT(ledb);
4104 TPACPI_ACPIHANDLE_INIT(lght);
4105 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4106 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4107
78f81cc4 4108 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4109 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4110
d8fd94d9 4111 if (tp_features.light)
78f81cc4
BD		 4112 /* light status not supported on
4113 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4114 tp_features.light_status =
4115 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4116
9c0a76e1
HMH		 4117 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4118 str_supported(tp_features.light),
4119 str_supported(tp_features.light_status));
fe08bc4b 4120
9c0a76e1
HMH		 4121 if (!tp_features.light)
4122 return 1;
4123
4124 rc = led_classdev_register(&tpacpi_pdev->dev,
4125 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4126
4127 if (rc < 0) {
4128 tp_features.light = 0;
4129 tp_features.light_status = 0;
9c0a76e1
HMH		 4130 } else {
4131 rc = 0;
e306501d 4132 }
9c0a76e1 4133
e306501d
HMH		 4134 return rc;
4135}
4136
4137static void light_exit(void)
4138{
4139 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4140 if (work_pending(&tpacpi_led_thinklight.work))
e0e3c061 4141 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4142}
4143
78f81cc4 4144static int light_read(char *p)
1da177e4
LT		 4145{
4146 int len = 0;
4fa6811b 4147 int status;
1da177e4 4148
d8fd94d9 4149 if (!tp_features.light) {
78f81cc4 4150 len += sprintf(p + len, "status:\t\tnot supported\n");
d8fd94d9 4151 } else if (!tp_features.light_status) {
78f81cc4
BD		 4152 len += sprintf(p + len, "status:\t\tunknown\n");
4153 len += sprintf(p + len, "commands:\ton, off\n");
4154 } else {
4fa6811b
HMH		 4155 status = light_get_status();
4156 if (status < 0)
4157 return status;
1da177e4 4158 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
78f81cc4
BD		 4159 len += sprintf(p + len, "commands:\ton, off\n");
4160 }
1da177e4
LT		 4161
4162 return len;
4163}
4164
78f81cc4 4165static int light_write(char *buf)
1da177e4 4166{
1da177e4 4167 char *cmd;
4fa6811b 4168 int newstatus = 0;
78f81cc4 4169
d8fd94d9 4170 if (!tp_features.light)
78f81cc4
BD		 4171 return -ENODEV;
4172
1da177e4
LT		 4173 while ((cmd = next_cmd(&buf))) {
4174 if (strlencmp(cmd, "on") == 0) {
4fa6811b 4175 newstatus = 1;
1da177e4 4176 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 4177 newstatus = 0;
1da177e4
LT		 4178 } else
4179 return -EINVAL;
1da177e4
LT		 4180 }
4181
4fa6811b 4182 return light_set_status(newstatus);
1da177e4
LT		 4183}
4184
a5763f22
HMH		 4185static struct ibm_struct light_driver_data = {
4186 .name = "light",
4187 .read = light_read,
4188 .write = light_write,
e306501d 4189 .exit = light_exit,
a5763f22
HMH		 4190};
4191
56b6aeb0
HMH		 4192/*************************************************************************
4193 * Dock subdriver
4194 */
1da177e4 4195
85998248 4196#ifdef CONFIG_THINKPAD_ACPI_DOCK
56b6aeb0 4197
f74a27d4
HMH		 4198static void dock_notify(struct ibm_struct *ibm, u32 event);
4199static int dock_read(char *p);
4200static int dock_write(char *buf);
4201
e0c7dfe7 4202TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
56b6aeb0
HMH		 4203 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
4204 "\\_SB.PCI0.PCI1.DOCK", /* all others */
4205 "\\_SB.PCI.ISA.SLCE", /* 570 */
4206 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
4207
5fba344c 4208/* don't list other alternatives as we install a notify handler on the 570 */
e0c7dfe7 4209TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
5fba344c 4210
1ba90e3a
TR		 4211static const struct acpi_device_id ibm_pci_device_ids[] = {
4212 {PCI_ROOT_HID_STRING, 0},
4213 {"", 0},
4214};
4215
d94a7f16
HMH		 4216static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
4217 {
4218 .notify = dock_notify,
4219 .handle = &dock_handle,
4220 .type = ACPI_SYSTEM_NOTIFY,
4221 },
4222 {
996fba08
HMH		 4223 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
4224 * We just use it to get notifications of dock hotplug
4225 * in very old thinkpads */
1ba90e3a 4226 .hid = ibm_pci_device_ids,
d94a7f16
HMH		 4227 .notify = dock_notify,
4228 .handle = &pci_handle,
4229 .type = ACPI_SYSTEM_NOTIFY,
4230 },
4231};
4232
4233static struct ibm_struct dock_driver_data[2] = {
4234 {
4235 .name = "dock",
4236 .read = dock_read,
4237 .write = dock_write,
4238 .acpi = &ibm_dock_acpidriver[0],
4239 },
4240 {
4241 .name = "dock",
4242 .acpi = &ibm_dock_acpidriver[1],
4243 },
4244};
4245
1da177e4
LT		 4246#define dock_docked() (_sta(dock_handle) & 1)
4247
a5763f22 4248static int __init dock_init(struct ibm_init_struct *iibm)
5fba344c 4249{
fe08bc4b
HMH		 4250 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
4251
e0c7dfe7 4252 TPACPI_ACPIHANDLE_INIT(dock);
5fba344c 4253
fe08bc4b
HMH		 4254 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
4255 str_supported(dock_handle != NULL));
4256
5fba344c
HMH		 4257 return (dock_handle)? 0 : 1;
4258}
4259
d94a7f16
HMH		 4260static int __init dock_init2(struct ibm_init_struct *iibm)
4261{
4262 int dock2_needed;
4263
4264 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
4265
4266 if (dock_driver_data[0].flags.acpi_driver_registered &&
4267 dock_driver_data[0].flags.acpi_notify_installed) {
e0c7dfe7 4268 TPACPI_ACPIHANDLE_INIT(pci);
d94a7f16
HMH		 4269 dock2_needed = (pci_handle != NULL);
4270 vdbg_printk(TPACPI_DBG_INIT,
4271 "dock PCI handler for the TP 570 is %s\n",
4272 str_supported(dock2_needed));
4273 } else {
4274 vdbg_printk(TPACPI_DBG_INIT,
4275 "dock subdriver part 2 not required\n");
4276 dock2_needed = 0;
4277 }
4278
4279 return (dock2_needed)? 0 : 1;
4280}
4281
56b6aeb0
HMH		 4282static void dock_notify(struct ibm_struct *ibm, u32 event)
4283{
4284 int docked = dock_docked();
1ba90e3a
TR		 4285 int pci = ibm->acpi->hid && ibm->acpi->device &&
4286 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
962ce8ca 4287 int data;
56b6aeb0
HMH		 4288
4289 if (event == 1 && !pci) /* 570 */
962ce8ca 4290 data = 1; /* button */
56b6aeb0 4291 else if (event == 1 && pci) /* 570 */
962ce8ca 4292 data = 3; /* dock */
56b6aeb0 4293 else if (event == 3 && docked)
962ce8ca 4294 data = 1; /* button */
56b6aeb0 4295 else if (event == 3 && !docked)
962ce8ca 4296 data = 2; /* undock */
56b6aeb0 4297 else if (event == 0 && docked)
962ce8ca 4298 data = 3; /* dock */
56b6aeb0 4299 else {
e0c7dfe7 4300 printk(TPACPI_ERR "unknown dock event %d, status %d\n",
56b6aeb0 4301 event, _sta(dock_handle));
962ce8ca 4302 data = 0; /* unknown */
56b6aeb0 4303 }
14e04fb3 4304 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
962ce8ca 4305 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
e0b36fc5 4306 dev_name(&ibm->acpi->device->dev),
962ce8ca 4307 event, data);
56b6aeb0
HMH		 4308}
4309
78f81cc4 4310static int dock_read(char *p)
1da177e4
LT		 4311{
4312 int len = 0;
4313 int docked = dock_docked();
4314
4315 if (!dock_handle)
4316 len += sprintf(p + len, "status:\t\tnot supported\n");
4317 else if (!docked)
4318 len += sprintf(p + len, "status:\t\tundocked\n");
4319 else {
4320 len += sprintf(p + len, "status:\t\tdocked\n");
4321 len += sprintf(p + len, "commands:\tdock, undock\n");
4322 }
4323
4324 return len;
4325}
4326
78f81cc4 4327static int dock_write(char *buf)
1da177e4
LT		 4328{
4329 char *cmd;
4330
4331 if (!dock_docked())
78f81cc4 4332 return -ENODEV;
1da177e4
LT		 4333
4334 while ((cmd = next_cmd(&buf))) {
4335 if (strlencmp(cmd, "undock") == 0) {
78f81cc4
BD		 4336 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
4337 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
56b6aeb0
HMH		 4338 return -EIO;
4339 } else if (strlencmp(cmd, "dock") == 0) {
4340 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
4341 return -EIO;
4342 } else
4343 return -EINVAL;
1da177e4 4344 }
56b6aeb0
HMH		 4345
4346 return 0;
1da177e4 4347}
56b6aeb0 4348
85998248 4349#endif /* CONFIG_THINKPAD_ACPI_DOCK */
56b6aeb0
HMH		 4350
4351/*************************************************************************
4352 * Bay subdriver
4353 */
1da177e4 4354
85998248 4355#ifdef CONFIG_THINKPAD_ACPI_BAY
f74a27d4 4356
e0c7dfe7 4357TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
56b6aeb0
HMH		 4358 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
4359 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
4360 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
4361 ); /* A21e, R30, R31 */
e0c7dfe7 4362TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
56b6aeb0
HMH		 4363 "_EJ0", /* all others */
4364 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
e0c7dfe7 4365TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
56b6aeb0
HMH		 4366 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
4367 ); /* all others */
e0c7dfe7 4368TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
56b6aeb0
HMH		 4369 "_EJ0", /* 770x */
4370 ); /* all others */
4371
a5763f22 4372static int __init bay_init(struct ibm_init_struct *iibm)
1da177e4 4373{
fe08bc4b
HMH		 4374 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
4375
e0c7dfe7 4376 TPACPI_ACPIHANDLE_INIT(bay);
5fba344c 4377 if (bay_handle)
e0c7dfe7
HMH		 4378 TPACPI_ACPIHANDLE_INIT(bay_ej);
4379 TPACPI_ACPIHANDLE_INIT(bay2);
5fba344c 4380 if (bay2_handle)
e0c7dfe7 4381 TPACPI_ACPIHANDLE_INIT(bay2_ej);
5fba344c 4382
d8fd94d9
HMH		 4383 tp_features.bay_status = bay_handle &&
4384 acpi_evalf(bay_handle, NULL, "_STA", "qv");
4385 tp_features.bay_status2 = bay2_handle &&
4386 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
78f81cc4 4387
d8fd94d9
HMH		 4388 tp_features.bay_eject = bay_handle && bay_ej_handle &&
4389 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
4390 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
4391 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
1da177e4 4392
fe08bc4b
HMH		 4393 vdbg_printk(TPACPI_DBG_INIT,
4394 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
d8fd94d9
HMH		 4395 str_supported(tp_features.bay_status),
4396 str_supported(tp_features.bay_eject),
4397 str_supported(tp_features.bay_status2),
4398 str_supported(tp_features.bay_eject2));
fe08bc4b 4399
d8fd94d9
HMH		 4400 return (tp_features.bay_status || tp_features.bay_eject ||
4401 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
1da177e4
LT		 4402}
4403
56b6aeb0
HMH		 4404static void bay_notify(struct ibm_struct *ibm, u32 event)
4405{
14e04fb3 4406 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
962ce8ca 4407 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
e0b36fc5 4408 dev_name(&ibm->acpi->device->dev),
962ce8ca 4409 event, 0);
56b6aeb0
HMH		 4410}
4411
78f81cc4
BD		 4412#define bay_occupied(b) (_sta(b##_handle) & 1)
4413
4414static int bay_read(char *p)
1da177e4
LT		 4415{
4416 int len = 0;
78f81cc4
BD		 4417 int occupied = bay_occupied(bay);
4418 int occupied2 = bay_occupied(bay2);
4419 int eject, eject2;
4420
d8fd94d9
HMH		 4421 len += sprintf(p + len, "status:\t\t%s\n",
4422 tp_features.bay_status ?
4423 (occupied ? "occupied" : "unoccupied") :
4424 "not supported");
4425 if (tp_features.bay_status2)
78f81cc4
BD		 4426 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
4427 "occupied" : "unoccupied");
4428
d8fd94d9
HMH		 4429 eject = tp_features.bay_eject && occupied;
4430 eject2 = tp_features.bay_eject2 && occupied2;
78f81cc4
BD		 4431
4432 if (eject && eject2)
4433 len += sprintf(p + len, "commands:\teject, eject2\n");
4434 else if (eject)
1da177e4 4435 len += sprintf(p + len, "commands:\teject\n");
78f81cc4
BD		 4436 else if (eject2)
4437 len += sprintf(p + len, "commands:\teject2\n");
1da177e4
LT		 4438
4439 return len;
4440}
4441
78f81cc4 4442static int bay_write(char *buf)
1da177e4
LT		 4443{
4444 char *cmd;
4445
d8fd94d9 4446 if (!tp_features.bay_eject && !tp_features.bay_eject2)
78f81cc4
BD		 4447 return -ENODEV;
4448
1da177e4 4449 while ((cmd = next_cmd(&buf))) {
d8fd94d9 4450 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
78f81cc4
BD		 4451 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
4452 return -EIO;
d8fd94d9 4453 } else if (tp_features.bay_eject2 &&
78f81cc4
BD		 4454 strlencmp(cmd, "eject2") == 0) {
4455 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
1da177e4
LT		 4456 return -EIO;
4457 } else
4458 return -EINVAL;
4459 }
4460
4461 return 0;
78f81cc4 4462}
a5763f22 4463
8d376cd6
HMH		 4464static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
4465 .notify = bay_notify,
4466 .handle = &bay_handle,
4467 .type = ACPI_SYSTEM_NOTIFY,
4468};
4469
a5763f22
HMH		 4470static struct ibm_struct bay_driver_data = {
4471 .name = "bay",
4472 .read = bay_read,
4473 .write = bay_write,
8d376cd6 4474 .acpi = &ibm_bay_acpidriver,
a5763f22
HMH		 4475};
4476
85998248 4477#endif /* CONFIG_THINKPAD_ACPI_BAY */
1da177e4 4478
56b6aeb0
HMH		 4479/*************************************************************************
4480 * CMOS subdriver
4481 */
4482
b616004c
HMH		 4483/* sysfs cmos_command -------------------------------------------------- */
4484static ssize_t cmos_command_store(struct device *dev,
4485 struct device_attribute *attr,
4486 const char *buf, size_t count)
4487{
4488 unsigned long cmos_cmd;
4489 int res;
4490
4491 if (parse_strtoul(buf, 21, &cmos_cmd))
4492 return -EINVAL;
4493
4494 res = issue_thinkpad_cmos_command(cmos_cmd);
4495 return (res)? res : count;
4496}
4497
4498static struct device_attribute dev_attr_cmos_command =
4499 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4500
4501/* --------------------------------------------------------------------- */
4502
a5763f22 4503static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 4504{
b616004c
HMH		 4505 int res;
4506
fe08bc4b
HMH		 4507 vdbg_printk(TPACPI_DBG_INIT,
4508 "initializing cmos commands subdriver\n");
4509
e0c7dfe7 4510 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 4511
fe08bc4b
HMH		 4512 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4513 str_supported(cmos_handle != NULL));
b616004c
HMH		 4514
4515 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4516 if (res)
4517 return res;
4518
5fba344c
HMH		 4519 return (cmos_handle)? 0 : 1;
4520}
4521
b616004c
HMH		 4522static void cmos_exit(void)
4523{
4524 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4525}
4526
78f81cc4 4527static int cmos_read(char *p)
1da177e4
LT		 4528{
4529 int len = 0;
4530
78f81cc4
BD		 4531 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4532 R30, R31, T20-22, X20-21 */
1da177e4
LT		 4533 if (!cmos_handle)
4534 len += sprintf(p + len, "status:\t\tnot supported\n");
4535 else {
4536 len += sprintf(p + len, "status:\t\tsupported\n");
78f81cc4 4537 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 4538 }
4539
4540 return len;
4541}
4542
78f81cc4 4543static int cmos_write(char *buf)
1da177e4
LT		 4544{
4545 char *cmd;
c9bea99c 4546 int cmos_cmd, res;
1da177e4
LT		 4547
4548 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 4549 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4550 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 4551 /* cmos_cmd set */
4552 } else
4553 return -EINVAL;
4554
c9bea99c
HMH		 4555 res = issue_thinkpad_cmos_command(cmos_cmd);
4556 if (res)
4557 return res;
1da177e4
LT		 4558 }
4559
4560 return 0;
78f81cc4
BD		 4561}
4562
a5763f22
HMH		 4563static struct ibm_struct cmos_driver_data = {
4564 .name = "cmos",
4565 .read = cmos_read,
4566 .write = cmos_write,
b616004c 4567 .exit = cmos_exit,
a5763f22 4568};
56b6aeb0
HMH		 4569
4570/*************************************************************************
4571 * LED subdriver
4572 */
4573
f74a27d4
HMH		 4574enum led_access_mode {
4575 TPACPI_LED_NONE = 0,
4576 TPACPI_LED_570, /* 570 */
4577 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4578 TPACPI_LED_NEW, /* all others */
4579};
4580
4581enum { /* For TPACPI_LED_OLD */
4582 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4583 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4584 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4585};
4586
4fa6811b
HMH		 4587enum led_status_t {
4588 TPACPI_LED_OFF = 0,
4589 TPACPI_LED_ON,
4590 TPACPI_LED_BLINK,
4591};
4592
9a8e1738 4593static enum led_access_mode led_supported;
78f81cc4 4594
e0c7dfe7 4595TPACPI_HANDLE(led, ec, "SLED", /* 570 */
35ff8b9f
HMH		 4596 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4597 /* T20-22, X20-21 */
56b6aeb0
HMH		 4598 "LED", /* all others */
4599 ); /* R30, R31 */
4600
af116101
HMH		 4601#define TPACPI_LED_NUMLEDS 8
4602static struct tpacpi_led_classdev *tpacpi_leds;
4603static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 4604static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 4605 /* there's a limit of 19 chars + NULL before 2.6.26 */
4606 "tpacpi::power",
4607 "tpacpi:orange:batt",
4608 "tpacpi:green:batt",
4609 "tpacpi::dock_active",
4610 "tpacpi::bay_active",
4611 "tpacpi::dock_batt",
4612 "tpacpi::unknown_led",
4613 "tpacpi::standby",
4614};
4615
24e45bbe 4616static int led_get_status(const unsigned int led)
4fa6811b
HMH		 4617{
4618 int status;
af116101 4619 enum led_status_t led_s;
4fa6811b
HMH		 4620
4621 switch (led_supported) {
4622 case TPACPI_LED_570:
4623 if (!acpi_evalf(ec_handle,
4624 &status, "GLED", "dd", 1 << led))
4625 return -EIO;
af116101 4626 led_s = (status == 0)?
4fa6811b
HMH		 4627 TPACPI_LED_OFF :
4628 ((status == 1)?
4629 TPACPI_LED_ON :
4630 TPACPI_LED_BLINK);
af116101
HMH		 4631 tpacpi_led_state_cache[led] = led_s;
4632 return led_s;
4fa6811b
HMH		 4633 default:
4634 return -ENXIO;
4635 }
4636
4637 /* not reached */
4638}
4639
24e45bbe
HMH		 4640static int led_set_status(const unsigned int led,
4641 const enum led_status_t ledstatus)
4fa6811b
HMH		 4642{
4643 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 4644 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
4645 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 4646
4647 int rc = 0;
4648
4649 switch (led_supported) {
4650 case TPACPI_LED_570:
24e45bbe
HMH		 4651 /* 570 */
4652 if (led > 7)
4653 return -EINVAL;
4654 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4655 (1 << led), led_sled_arg1[ledstatus]))
4656 rc = -EIO;
4657 break;
4fa6811b 4658 case TPACPI_LED_OLD:
24e45bbe
HMH		 4659 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
4660 if (led > 7)
4661 return -EINVAL;
4662 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
4663 if (rc >= 0)
4664 rc = ec_write(TPACPI_LED_EC_HLBL,
4665 (ledstatus == TPACPI_LED_BLINK) << led);
4666 if (rc >= 0)
4667 rc = ec_write(TPACPI_LED_EC_HLCL,
4668 (ledstatus != TPACPI_LED_OFF) << led);
4669 break;
4fa6811b 4670 case TPACPI_LED_NEW:
24e45bbe
HMH		 4671 /* all others */
4672 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4673 led, led_led_arg1[ledstatus]))
4674 rc = -EIO;
4675 break;
4fa6811b
HMH		 4676 default:
4677 rc = -ENXIO;
4678 }
4679
af116101
HMH		 4680 if (!rc)
4681 tpacpi_led_state_cache[led] = ledstatus;
4682
4683 return rc;
4684}
4685
4686static void led_sysfs_set_status(unsigned int led,
4687 enum led_brightness brightness)
4688{
4689 led_set_status(led,
4690 (brightness == LED_OFF) ?
4691 TPACPI_LED_OFF :
4692 (tpacpi_led_state_cache[led] == TPACPI_LED_BLINK) ?
4693 TPACPI_LED_BLINK : TPACPI_LED_ON);
4694}
4695
4696static void led_set_status_worker(struct work_struct *work)
4697{
4698 struct tpacpi_led_classdev *data =
4699 container_of(work, struct tpacpi_led_classdev, work);
4700
4701 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4702 led_sysfs_set_status(data->led, data->new_brightness);
4703}
4704
4705static void led_sysfs_set(struct led_classdev *led_cdev,
4706 enum led_brightness brightness)
4707{
4708 struct tpacpi_led_classdev *data = container_of(led_cdev,
4709 struct tpacpi_led_classdev, led_classdev);
4710
4711 data->new_brightness = brightness;
e0e3c061 4712 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4713}
4714
4715static int led_sysfs_blink_set(struct led_classdev *led_cdev,
4716 unsigned long *delay_on, unsigned long *delay_off)
4717{
4718 struct tpacpi_led_classdev *data = container_of(led_cdev,
4719 struct tpacpi_led_classdev, led_classdev);
4720
4721 /* Can we choose the flash rate? */
4722 if (*delay_on == 0 && *delay_off == 0) {
4723 /* yes. set them to the hardware blink rate (1 Hz) */
4724 *delay_on = 500; /* ms */
4725 *delay_off = 500; /* ms */
4726 } else if ((*delay_on != 500) || (*delay_off != 500))
4727 return -EINVAL;
4728
4729 data->new_brightness = TPACPI_LED_BLINK;
e0e3c061 4730 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 4731
4732 return 0;
4733}
4734
4735static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
4736{
4737 int rc;
4738
4739 struct tpacpi_led_classdev *data = container_of(led_cdev,
4740 struct tpacpi_led_classdev, led_classdev);
4741
4742 rc = led_get_status(data->led);
4743
4744 if (rc == TPACPI_LED_OFF || rc < 0)
4745 rc = LED_OFF; /* no error handling in led class :( */
4746 else
4747 rc = LED_FULL;
4748
4fa6811b
HMH		 4749 return rc;
4750}
4751
af116101
HMH		 4752static void led_exit(void)
4753{
4754 unsigned int i;
4755
4756 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4757 if (tpacpi_leds[i].led_classdev.name)
4758 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
4759 }
4760
4761 kfree(tpacpi_leds);
af116101
HMH		 4762}
4763
a5763f22 4764static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 4765{
af116101
HMH		 4766 unsigned int i;
4767 int rc;
4768
fe08bc4b
HMH		 4769 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
4770
e0c7dfe7 4771 TPACPI_ACPIHANDLE_INIT(led);
5fba344c 4772
78f81cc4
BD		 4773 if (!led_handle)
4774 /* led not supported on R30, R31 */
efa27145 4775 led_supported = TPACPI_LED_NONE;
78f81cc4
BD		 4776 else if (strlencmp(led_path, "SLED") == 0)
4777 /* 570 */
efa27145 4778 led_supported = TPACPI_LED_570;
78f81cc4
BD		 4779 else if (strlencmp(led_path, "SYSL") == 0)
4780 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
efa27145 4781 led_supported = TPACPI_LED_OLD;
78f81cc4
BD		 4782 else
4783 /* all others */
efa27145 4784 led_supported = TPACPI_LED_NEW;
78f81cc4 4785
fe08bc4b
HMH		 4786 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
4787 str_supported(led_supported), led_supported);
4788
af116101
HMH		 4789 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
4790 GFP_KERNEL);
4791 if (!tpacpi_leds) {
4792 printk(TPACPI_ERR "Out of memory for LED data\n");
4793 return -ENOMEM;
4794 }
4795
4796 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4797 tpacpi_leds[i].led = i;
4798
4799 tpacpi_leds[i].led_classdev.brightness_set = &led_sysfs_set;
4800 tpacpi_leds[i].led_classdev.blink_set = &led_sysfs_blink_set;
4801 if (led_supported == TPACPI_LED_570)
4802 tpacpi_leds[i].led_classdev.brightness_get =
4803 &led_sysfs_get;
4804
4805 tpacpi_leds[i].led_classdev.name = tpacpi_led_names[i];
4806
4807 INIT_WORK(&tpacpi_leds[i].work, led_set_status_worker);
4808
4809 rc = led_classdev_register(&tpacpi_pdev->dev,
4810 &tpacpi_leds[i].led_classdev);
4811 if (rc < 0) {
4812 tpacpi_leds[i].led_classdev.name = NULL;
4813 led_exit();
4814 return rc;
4815 }
4816 }
4817
5fba344c 4818 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
78f81cc4
BD		 4819}
4820
4fa6811b
HMH		 4821#define str_led_status(s) \
4822 ((s) == TPACPI_LED_OFF ? "off" : \
4823 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4
BD		 4824
4825static int led_read(char *p)
1da177e4
LT		 4826{
4827 int len = 0;
4828
78f81cc4
BD		 4829 if (!led_supported) {
4830 len += sprintf(p + len, "status:\t\tnot supported\n");
4831 return len;
4832 }
4833 len += sprintf(p + len, "status:\t\tsupported\n");
4834
efa27145 4835 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 4836 /* 570 */
4837 int i, status;
4838 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 4839 status = led_get_status(i);
4840 if (status < 0)
78f81cc4
BD		 4841 return -EIO;
4842 len += sprintf(p + len, "%d:\t\t%s\n",
4fa6811b 4843 i, str_led_status(status));
78f81cc4
BD		 4844 }
4845 }
4846
1da177e4 4847 len += sprintf(p + len, "commands:\t"
78f81cc4 4848 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
1da177e4
LT		 4849
4850 return len;
4851}
4852
78f81cc4 4853static int led_write(char *buf)
1da177e4
LT		 4854{
4855 char *cmd;
4fa6811b
HMH		 4856 int led, rc;
4857 enum led_status_t s;
78f81cc4
BD		 4858
4859 if (!led_supported)
4860 return -ENODEV;
1da177e4
LT		 4861
4862 while ((cmd = next_cmd(&buf))) {
78f81cc4 4863 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
1da177e4
LT		 4864 return -EINVAL;
4865
78f81cc4 4866 if (strstr(cmd, "off")) {
4fa6811b 4867 s = TPACPI_LED_OFF;
1da177e4 4868 } else if (strstr(cmd, "on")) {
4fa6811b 4869 s = TPACPI_LED_ON;
78f81cc4 4870 } else if (strstr(cmd, "blink")) {
4fa6811b 4871 s = TPACPI_LED_BLINK;
78f81cc4 4872 } else {
4fa6811b 4873 return -EINVAL;
78f81cc4 4874 }
4fa6811b
HMH		 4875
4876 rc = led_set_status(led, s);
4877 if (rc < 0)
4878 return rc;
78f81cc4
BD		 4879 }
4880
4881 return 0;
4882}
4883
a5763f22
HMH		 4884static struct ibm_struct led_driver_data = {
4885 .name = "led",
4886 .read = led_read,
4887 .write = led_write,
af116101 4888 .exit = led_exit,
a5763f22
HMH		 4889};
4890
56b6aeb0
HMH		 4891/*************************************************************************
4892 * Beep subdriver
4893 */
4894
e0c7dfe7 4895TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 4896
a5763f22 4897static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 4898{
fe08bc4b
HMH		 4899 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
4900
e0c7dfe7 4901 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 4902
fe08bc4b
HMH		 4903 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
4904 str_supported(beep_handle != NULL));
4905
5fba344c
HMH		 4906 return (beep_handle)? 0 : 1;
4907}
4908
78f81cc4
BD		 4909static int beep_read(char *p)
4910{
4911 int len = 0;
4912
4913 if (!beep_handle)
4914 len += sprintf(p + len, "status:\t\tnot supported\n");
4915 else {
4916 len += sprintf(p + len, "status:\t\tsupported\n");
4917 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
4918 }
4919
4920 return len;
4921}
4922
4923static int beep_write(char *buf)
4924{
4925 char *cmd;
4926 int beep_cmd;
4927
4928 if (!beep_handle)
4929 return -ENODEV;
4930
4931 while ((cmd = next_cmd(&buf))) {
4932 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
4933 beep_cmd >= 0 && beep_cmd <= 17) {
4934 /* beep_cmd set */
4935 } else
4936 return -EINVAL;
4937 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
4938 return -EIO;
4939 }
4940
4941 return 0;
4942}
4943
a5763f22
HMH		 4944static struct ibm_struct beep_driver_data = {
4945 .name = "beep",
4946 .read = beep_read,
4947 .write = beep_write,
4948};
4949
56b6aeb0
HMH		 4950/*************************************************************************
4951 * Thermal subdriver
4952 */
78f81cc4 4953
f74a27d4
HMH		 4954enum thermal_access_mode {
4955 TPACPI_THERMAL_NONE = 0, /* No thermal support */
4956 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
4957 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
4958 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
4959 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
4960};
4961
4962enum { /* TPACPI_THERMAL_TPEC_* */
4963 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
4964 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
4965 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
4966};
4967
4968#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
4969struct ibm_thermal_sensors_struct {
4970 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
4971};
4972
a26f878a 4973static enum thermal_access_mode thermal_read_mode;
78f81cc4 4974
b21a15f6
HMH		 4975/* idx is zero-based */
4976static int thermal_get_sensor(int idx, s32 *value)
4977{
4978 int t;
4979 s8 tmp;
4980 char tmpi[5];
4981
4982 t = TP_EC_THERMAL_TMP0;
4983
4984 switch (thermal_read_mode) {
4985#if TPACPI_MAX_THERMAL_SENSORS >= 16
4986 case TPACPI_THERMAL_TPEC_16:
4987 if (idx >= 8 && idx <= 15) {
4988 t = TP_EC_THERMAL_TMP8;
4989 idx -= 8;
4990 }
4991 /* fallthrough */
4992#endif
4993 case TPACPI_THERMAL_TPEC_8:
4994 if (idx <= 7) {
4995 if (!acpi_ec_read(t + idx, &tmp))
4996 return -EIO;
4997 *value = tmp * 1000;
4998 return 0;
4999 }
5000 break;
5001
5002 case TPACPI_THERMAL_ACPI_UPDT:
5003 if (idx <= 7) {
5004 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5005 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5006 return -EIO;
5007 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5008 return -EIO;
5009 *value = (t - 2732) * 100;
5010 return 0;
5011 }
5012 break;
5013
5014 case TPACPI_THERMAL_ACPI_TMP07:
5015 if (idx <= 7) {
5016 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5017 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5018 return -EIO;
5019 if (t > 127 || t < -127)
5020 t = TP_EC_THERMAL_TMP_NA;
5021 *value = t * 1000;
5022 return 0;
5023 }
5024 break;
5025
5026 case TPACPI_THERMAL_NONE:
5027 default:
5028 return -ENOSYS;
5029 }
5030
5031 return -EINVAL;
5032}
5033
5034static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5035{
5036 int res, i;
5037 int n;
5038
5039 n = 8;
5040 i = 0;
5041
5042 if (!s)
5043 return -EINVAL;
5044
5045 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5046 n = 16;
5047
35ff8b9f 5048 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5049 res = thermal_get_sensor(i, &s->temp[i]);
5050 if (res)
5051 return res;
5052 }
5053
5054 return n;
5055}
f74a27d4 5056
2c37aa4e
HMH		 5057/* sysfs temp##_input -------------------------------------------------- */
5058
5059static ssize_t thermal_temp_input_show(struct device *dev,
5060 struct device_attribute *attr,
5061 char *buf)
5062{
5063 struct sensor_device_attribute *sensor_attr =
5064 to_sensor_dev_attr(attr);
5065 int idx = sensor_attr->index;
5066 s32 value;
5067 int res;
5068
5069 res = thermal_get_sensor(idx, &value);
5070 if (res)
5071 return res;
5072 if (value == TP_EC_THERMAL_TMP_NA * 1000)
5073 return -ENXIO;
5074
5075 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5076}
5077
5078#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5079 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5080 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5081
5082static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5083 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5084 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5085 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5086 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5087 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5088 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5089 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5090 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5091 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5092 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5093 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5094 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5095 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5096 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5097 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5098 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5099};
5100
5101#define THERMAL_ATTRS(X) \
5102 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5103
5104static struct attribute *thermal_temp_input_attr[] = {
5105 THERMAL_ATTRS(8),
5106 THERMAL_ATTRS(9),
5107 THERMAL_ATTRS(10),
5108 THERMAL_ATTRS(11),
5109 THERMAL_ATTRS(12),
5110 THERMAL_ATTRS(13),
5111 THERMAL_ATTRS(14),
5112 THERMAL_ATTRS(15),
5113 THERMAL_ATTRS(0),
5114 THERMAL_ATTRS(1),
5115 THERMAL_ATTRS(2),
5116 THERMAL_ATTRS(3),
5117 THERMAL_ATTRS(4),
5118 THERMAL_ATTRS(5),
5119 THERMAL_ATTRS(6),
5120 THERMAL_ATTRS(7),
5121 NULL
5122};
5123
5124static const struct attribute_group thermal_temp_input16_group = {
5125 .attrs = thermal_temp_input_attr
5126};
5127
5128static const struct attribute_group thermal_temp_input8_group = {
5129 .attrs = &thermal_temp_input_attr[8]
5130};
5131
5132#undef THERMAL_SENSOR_ATTR_TEMP
5133#undef THERMAL_ATTRS
5134
5135/* --------------------------------------------------------------------- */
5136
a5763f22 5137static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5138{
60eb0b35
HMH		 5139 u8 t, ta1, ta2;
5140 int i;
5fba344c 5141 int acpi_tmp7;
2c37aa4e 5142 int res;
5fba344c 5143
fe08bc4b
HMH		 5144 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5145
5fba344c 5146 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5147
3d6f99ca 5148 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5149 /*
5150 * Direct EC access mode: sensors at registers
5151 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5152 * non-implemented, thermal sensors return 0x80 when
5153 * not available
5154 */
78f81cc4 5155
60eb0b35
HMH		 5156 ta1 = ta2 = 0;
5157 for (i = 0; i < 8; i++) {
04cc862c 5158 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5159 ta1 |= t;
5160 } else {
5161 ta1 = 0;
5162 break;
5163 }
04cc862c 5164 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5165 ta2 |= t;
5166 } else {
5167 ta1 = 0;
5168 break;
5169 }
5170 }
5171 if (ta1 == 0) {
5172 /* This is sheer paranoia, but we handle it anyway */
5173 if (acpi_tmp7) {
e0c7dfe7 5174 printk(TPACPI_ERR
60eb0b35 5175 "ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5176 "falling back to ACPI TMPx access "
5177 "mode\n");
efa27145 5178 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5179 } else {
e0c7dfe7 5180 printk(TPACPI_ERR
60eb0b35
HMH		 5181 "ThinkPad ACPI EC access misbehaving, "
5182 "disabling thermal sensors access\n");
efa27145 5183 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5184 }
5185 } else {
5186 thermal_read_mode =
5187 (ta2 != 0) ?
efa27145 5188 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5189 }
5190 } else if (acpi_tmp7) {
a26f878a
HMH		 5191 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
5192 /* 600e/x, 770e, 770x */
efa27145 5193 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a
HMH		 5194 } else {
5195 /* Standard ACPI TMPx access, max 8 sensors */
efa27145 5196 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5197 }
5198 } else {
5199 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5200 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5201 }
78f81cc4 5202
fe08bc4b
HMH		 5203 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5204 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5205 thermal_read_mode);
5206
35ff8b9f 5207 switch (thermal_read_mode) {
2c37aa4e 5208 case TPACPI_THERMAL_TPEC_16:
7fd40029 5209 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5210 &thermal_temp_input16_group);
5211 if (res)
5212 return res;
5213 break;
5214 case TPACPI_THERMAL_TPEC_8:
5215 case TPACPI_THERMAL_ACPI_TMP07:
5216 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5217 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5218 &thermal_temp_input8_group);
5219 if (res)
5220 return res;
5221 break;
5222 case TPACPI_THERMAL_NONE:
5223 default:
5224 return 1;
5225 }
5226
5227 return 0;
5228}
5229
5230static void thermal_exit(void)
5231{
35ff8b9f 5232 switch (thermal_read_mode) {
2c37aa4e 5233 case TPACPI_THERMAL_TPEC_16:
7fd40029 5234 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5235 &thermal_temp_input16_group);
5236 break;
5237 case TPACPI_THERMAL_TPEC_8:
5238 case TPACPI_THERMAL_ACPI_TMP07:
5239 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5240 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5241 &thermal_temp_input16_group);
5242 break;
5243 case TPACPI_THERMAL_NONE:
5244 default:
5245 break;
5246 }
78f81cc4
BD		 5247}
5248
a26f878a
HMH		 5249static int thermal_read(char *p)
5250{
5251 int len = 0;
5252 int n, i;
5253 struct ibm_thermal_sensors_struct t;
5254
5255 n = thermal_get_sensors(&t);
5256 if (unlikely(n < 0))
5257 return n;
5258
5259 len += sprintf(p + len, "temperatures:\t");
5260
5261 if (n > 0) {
5262 for (i = 0; i < (n - 1); i++)
5263 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
5264 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
5265 } else
5266 len += sprintf(p + len, "not supported\n");
78f81cc4
BD		 5267
5268 return len;
5269}
5270
a5763f22
HMH		 5271static struct ibm_struct thermal_driver_data = {
5272 .name = "thermal",
5273 .read = thermal_read,
2c37aa4e 5274 .exit = thermal_exit,
a5763f22
HMH		 5275};
5276
56b6aeb0
HMH		 5277/*************************************************************************
5278 * EC Dump subdriver
5279 */
5280
78f81cc4
BD		 5281static u8 ecdump_regs[256];
5282
5283static int ecdump_read(char *p)
5284{
5285 int len = 0;
5286 int i, j;
5287 u8 v;
5288
5289 len += sprintf(p + len, "EC "
5290 " +00 +01 +02 +03 +04 +05 +06 +07"
5291 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5292 for (i = 0; i < 256; i += 16) {
5293 len += sprintf(p + len, "EC 0x%02x:", i);
5294 for (j = 0; j < 16; j++) {
5295 if (!acpi_ec_read(i + j, &v))
5296 break;
5297 if (v != ecdump_regs[i + j])
5298 len += sprintf(p + len, " *%02x", v);
5299 else
5300 len += sprintf(p + len, " %02x", v);
5301 ecdump_regs[i + j] = v;
5302 }
5303 len += sprintf(p + len, "\n");
5304 if (j != 16)
5305 break;
5306 }
5307
5308 /* These are way too dangerous to advertise openly... */
5309#if 0
5310 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
5311 " (<offset> is 00-ff, <value> is 00-ff)\n");
5312 len += sprintf(p + len, "commands:\t0x<offset> <value> "
5313 " (<offset> is 00-ff, <value> is 0-255)\n");
5314#endif
5315 return len;
5316}
5317
5318static int ecdump_write(char *buf)
5319{
5320 char *cmd;
5321 int i, v;
5322
5323 while ((cmd = next_cmd(&buf))) {
5324 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5325 /* i and v set */
5326 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5327 /* i and v set */
5328 } else
5329 return -EINVAL;
5330 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5331 if (!acpi_ec_write(i, v))
1da177e4
LT		 5332 return -EIO;
5333 } else
5334 return -EINVAL;
5335 }
5336
5337 return 0;
78f81cc4
BD		 5338}
5339
a5763f22
HMH		 5340static struct ibm_struct ecdump_driver_data = {
5341 .name = "ecdump",
5342 .read = ecdump_read,
5343 .write = ecdump_write,
92641177 5344 .flags.experimental = 1,
a5763f22
HMH		 5345};
5346
56b6aeb0
HMH		 5347/*************************************************************************
5348 * Backlight/brightness subdriver
5349 */
5350
f74a27d4
HMH		 5351#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5352
e11aecf1
HMH		 5353enum {
5354 TP_EC_BACKLIGHT = 0x31,
5355
5356 /* TP_EC_BACKLIGHT bitmasks */
5357 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5358 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5359 TP_EC_BACKLIGHT_MAPSW = 0x20,
5360};
5361
94954cc6 5362static struct backlight_device *ibm_backlight_device;
f74a27d4
HMH		 5363static int brightness_mode;
5364static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5365
b21a15f6 5366static struct mutex brightness_mutex;
56b6aeb0 5367
b21a15f6
HMH		 5368/*
5369 * ThinkPads can read brightness from two places: EC 0x31, or
5370 * CMOS NVRAM byte 0x5E, bits 0-3.
e11aecf1
HMH		 5371 *
5372 * EC 0x31 has the following layout
5373 * Bit 7: unknown function
5374 * Bit 6: unknown function
5375 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5376 * Bit 4: must be set to zero to avoid problems
5377 * Bit 3-0: backlight brightness level
5378 *
5379 * brightness_get_raw returns status data in the EC 0x31 layout
b21a15f6 5380 */
e11aecf1 5381static int brightness_get_raw(int *status)
b21a15f6
HMH		 5382{
5383 u8 lec = 0, lcmos = 0, level = 0;
5384
5385 if (brightness_mode & 1) {
e11aecf1 5386 if (!acpi_ec_read(TP_EC_BACKLIGHT, &lec))
b21a15f6 5387 return -EIO;
e11aecf1 5388 level = lec & TP_EC_BACKLIGHT_LVLMSK;
b21a15f6
HMH		 5389 };
5390 if (brightness_mode & 2) {
5391 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5392 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5393 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
5394 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
5395 level = lcmos;
5396 }
5397
2d5e94d7 5398 if (brightness_mode == 3) {
e11aecf1
HMH		 5399 *status = lec; /* Prefer EC, CMOS is just a backing store */
5400 lec &= TP_EC_BACKLIGHT_LVLMSK;
2d5e94d7
HMH		 5401 if (lec == lcmos)
5402 tp_warned.bright_cmos_ec_unsync = 0;
5403 else {
5404 if (!tp_warned.bright_cmos_ec_unsync) {
5405 printk(TPACPI_ERR
5406 "CMOS NVRAM (%u) and EC (%u) do not "
5407 "agree on display brightness level\n",
5408 (unsigned int) lcmos,
5409 (unsigned int) lec);
5410 tp_warned.bright_cmos_ec_unsync = 1;
5411 }
5412 return -EIO;
5413 }
e11aecf1
HMH		 5414 } else {
5415 *status = level;
b21a15f6
HMH		 5416 }
5417
e11aecf1 5418 return 0;
b21a15f6
HMH		 5419}
5420
5421/* May return EINTR which can always be mapped to ERESTARTSYS */
5422static int brightness_set(int value)
5423{
5424 int cmos_cmd, inc, i, res;
5425 int current_value;
e11aecf1 5426 int command_bits;
b21a15f6 5427
e11aecf1
HMH		 5428 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
5429 value < 0)
b21a15f6
HMH		 5430 return -EINVAL;
5431
7646ea88 5432 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 5433 if (res < 0)
5434 return res;
5435
e11aecf1
HMH		 5436 res = brightness_get_raw(&current_value);
5437 if (res < 0)
b21a15f6 5438 goto errout;
e11aecf1
HMH		 5439
5440 command_bits = current_value & TP_EC_BACKLIGHT_CMDMSK;
5441 current_value &= TP_EC_BACKLIGHT_LVLMSK;
b21a15f6
HMH		 5442
5443 cmos_cmd = value > current_value ?
5444 TP_CMOS_BRIGHTNESS_UP :
5445 TP_CMOS_BRIGHTNESS_DOWN;
5446 inc = (value > current_value)? 1 : -1;
5447
5448 res = 0;
5449 for (i = current_value; i != value; i += inc) {
5450 if ((brightness_mode & 2) &&
5451 issue_thinkpad_cmos_command(cmos_cmd)) {
5452 res = -EIO;
5453 goto errout;
5454 }
5455 if ((brightness_mode & 1) &&
e11aecf1
HMH		 5456 !acpi_ec_write(TP_EC_BACKLIGHT,
5457 (i + inc) | command_bits)) {
b21a15f6
HMH		 5458 res = -EIO;
5459 goto errout;;
5460 }
5461 }
5462
5463errout:
5464 mutex_unlock(&brightness_mutex);
5465 return res;
5466}
5467
5468/* sysfs backlight class ----------------------------------------------- */
5469
5470static int brightness_update_status(struct backlight_device *bd)
5471{
5472 /* it is the backlight class's job (caller) to handle
5473 * EINTR and other errors properly */
5474 return brightness_set(
5475 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
5476 bd->props.power == FB_BLANK_UNBLANK) ?
5477 bd->props.brightness : 0);
5478}
5479
e11aecf1 5480static int brightness_get(struct backlight_device *bd)
a3f104c0 5481{
e11aecf1 5482 int status, res;
a3f104c0 5483
e11aecf1
HMH		 5484 res = brightness_get_raw(&status);
5485 if (res < 0)
5486 return 0; /* FIXME: teach backlight about error handling */
e11e211a 5487
e11aecf1 5488 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 5489}
5490
b21a15f6 5491static struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 5492 .get_brightness = brightness_get,
5493 .update_status = brightness_update_status,
56b6aeb0 5494};
e11e211a 5495
b21a15f6 5496/* --------------------------------------------------------------------- */
e11e211a 5497
a5763f22 5498static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0
HMH		 5499{
5500 int b;
5501
fe08bc4b
HMH		 5502 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
5503
f432255e
HMH		 5504 mutex_init(&brightness_mutex);
5505
b5972796
HMH		 5506 /*
5507 * We always attempt to detect acpi support, so as to switch
5508 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5509 * going to publish a backlight interface
5510 */
5511 b = tpacpi_check_std_acpi_brightness_support();
5512 if (b > 0) {
2dba1b5d
TR		 5513
5514 if (acpi_video_backlight_support()) {
5515 if (brightness_enable > 1) {
5516 printk(TPACPI_NOTICE
5517 "Standard ACPI backlight interface "
5518 "available, not loading native one.\n");
5519 return 1;
5520 } else if (brightness_enable == 1) {
5521 printk(TPACPI_NOTICE
5522 "Backlight control force enabled, even if standard "
5523 "ACPI backlight interface is available\n");
5524 }
5525 } else {
5526 if (brightness_enable > 1) {
5527 printk(TPACPI_NOTICE
5528 "Standard ACPI backlight interface not "
5529 "available, thinkpad_acpi native "
5530 "brightness control enabled\n");
5531 }
e11e211a 5532 }
87cc537a
HMH		 5533 }
5534
b5972796
HMH		 5535 if (!brightness_enable) {
5536 dbg_printk(TPACPI_DBG_INIT,
5537 "brightness support disabled by "
5538 "module parameter\n");
5539 return 1;
5540 }
5541
5542 if (b > 16) {
5543 printk(TPACPI_ERR
5544 "Unsupported brightness interface, "
5545 "please contact %s\n", TPACPI_MAIL);
5546 return 1;
5547 }
5548 if (b == 16)
5549 tp_features.bright_16levels = 1;
5550
24d3b774
HMH		 5551 if (!brightness_mode) {
5552 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
5553 brightness_mode = 2;
5554 else
5555 brightness_mode = 3;
5556
5557 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
5558 brightness_mode);
5559 }
5560
5561 if (brightness_mode > 3)
5562 return -EINVAL;
5563
e11aecf1 5564 if (brightness_get_raw(&b) < 0)
24d3b774 5565 return 1;
56b6aeb0 5566
a3f104c0 5567 if (tp_features.bright_16levels)
35ff8b9f
HMH		 5568 printk(TPACPI_INFO
5569 "detected a 16-level brightness capable ThinkPad\n");
a3f104c0 5570
7d5a015e
HMH		 5571 ibm_backlight_device = backlight_device_register(
5572 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
5573 &ibm_backlight_data);
56b6aeb0 5574 if (IS_ERR(ibm_backlight_device)) {
e0c7dfe7 5575 printk(TPACPI_ERR "Could not register backlight device\n");
56b6aeb0
HMH		 5576 return PTR_ERR(ibm_backlight_device);
5577 }
fe08bc4b 5578 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
56b6aeb0 5579
a3f104c0
HMH		 5580 ibm_backlight_device->props.max_brightness =
5581 (tp_features.bright_16levels)? 15 : 7;
e11aecf1 5582 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
56b6aeb0
HMH		 5583 backlight_update_status(ibm_backlight_device);
5584
5585 return 0;
5586}
5587
5588static void brightness_exit(void)
5589{
5590 if (ibm_backlight_device) {
fe08bc4b
HMH		 5591 vdbg_printk(TPACPI_DBG_EXIT,
5592 "calling backlight_device_unregister()\n");
56b6aeb0 5593 backlight_device_unregister(ibm_backlight_device);
56b6aeb0
HMH		 5594 }
5595}
5596
56b6aeb0
HMH		 5597static int brightness_read(char *p)
5598{
5599 int len = 0;
5600 int level;
5601
35ff8b9f
HMH		 5602 level = brightness_get(NULL);
5603 if (level < 0) {
56b6aeb0
HMH		 5604 len += sprintf(p + len, "level:\t\tunreadable\n");
5605 } else {
a3f104c0 5606 len += sprintf(p + len, "level:\t\t%d\n", level);
56b6aeb0
HMH		 5607 len += sprintf(p + len, "commands:\tup, down\n");
5608 len += sprintf(p + len, "commands:\tlevel <level>"
a3f104c0
HMH		 5609 " (<level> is 0-%d)\n",
5610 (tp_features.bright_16levels) ? 15 : 7);
56b6aeb0
HMH		 5611 }
5612
5613 return len;
5614}
5615
8acb0250
HM		 5616static int brightness_write(char *buf)
5617{
5618 int level;
4273af8d 5619 int rc;
1da177e4 5620 char *cmd;
a3f104c0 5621 int max_level = (tp_features.bright_16levels) ? 15 : 7;
1da177e4 5622
4273af8d
HMH		 5623 level = brightness_get(NULL);
5624 if (level < 0)
5625 return level;
78f81cc4 5626
4273af8d 5627 while ((cmd = next_cmd(&buf))) {
78f81cc4 5628 if (strlencmp(cmd, "up") == 0) {
4273af8d
HMH		 5629 if (level < max_level)
5630 level++;
78f81cc4 5631 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 5632 if (level > 0)
5633 level--;
5634 } else if (sscanf(cmd, "level %d", &level) == 1 &&
5635 level >= 0 && level <= max_level) {
5636 /* new level set */
78f81cc4
BD		 5637 } else
5638 return -EINVAL;
78f81cc4
BD		 5639 }
5640
4273af8d
HMH		 5641 /*
5642 * Now we know what the final level should be, so we try to set it.
5643 * Doing it this way makes the syscall restartable in case of EINTR
5644 */
5645 rc = brightness_set(level);
5646 return (rc == -EINTR)? ERESTARTSYS : rc;
78f81cc4
BD		 5647}
5648
a5763f22
HMH		 5649static struct ibm_struct brightness_driver_data = {
5650 .name = "brightness",
5651 .read = brightness_read,
5652 .write = brightness_write,
5653 .exit = brightness_exit,
5654};
5655
56b6aeb0
HMH		 5656/*************************************************************************
5657 * Volume subdriver
5658 */
fb87a811 5659
f74a27d4
HMH		 5660static int volume_offset = 0x30;
5661
78f81cc4
BD		 5662static int volume_read(char *p)
5663{
5664 int len = 0;
5665 u8 level;
5666
5667 if (!acpi_ec_read(volume_offset, &level)) {
5668 len += sprintf(p + len, "level:\t\tunreadable\n");
5669 } else {
5670 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
5671 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
5672 len += sprintf(p + len, "commands:\tup, down, mute\n");
5673 len += sprintf(p + len, "commands:\tlevel <level>"
5674 " (<level> is 0-15)\n");
5675 }
5676
5677 return len;
5678}
5679
78f81cc4
BD		 5680static int volume_write(char *buf)
5681{
5682 int cmos_cmd, inc, i;
5683 u8 level, mute;
5684 int new_level, new_mute;
5685 char *cmd;
5686
5687 while ((cmd = next_cmd(&buf))) {
5688 if (!acpi_ec_read(volume_offset, &level))
5689 return -EIO;
5690 new_mute = mute = level & 0x40;
5691 new_level = level = level & 0xf;
5692
5693 if (strlencmp(cmd, "up") == 0) {
5694 if (mute)
5695 new_mute = 0;
5696 else
5697 new_level = level == 15 ? 15 : level + 1;
5698 } else if (strlencmp(cmd, "down") == 0) {
5699 if (mute)
5700 new_mute = 0;
5701 else
5702 new_level = level == 0 ? 0 : level - 1;
5703 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
5704 new_level >= 0 && new_level <= 15) {
5705 /* new_level set */
5706 } else if (strlencmp(cmd, "mute") == 0) {
5707 new_mute = 0x40;
1da177e4
LT		 5708 } else
5709 return -EINVAL;
5710
35ff8b9f
HMH		 5711 if (new_level != level) {
5712 /* mute doesn't change */
5713
5714 cmos_cmd = (new_level > level) ?
5715 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
78f81cc4
BD		 5716 inc = new_level > level ? 1 : -1;
5717
c9bea99c 5718 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5719 !acpi_ec_write(volume_offset, level)))
5720 return -EIO;
5721
5722 for (i = level; i != new_level; i += inc)
c9bea99c 5723 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5724 !acpi_ec_write(volume_offset, i + inc))
5725 return -EIO;
5726
35ff8b9f
HMH		 5727 if (mute &&
5728 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
5729 !acpi_ec_write(volume_offset, new_level + mute))) {
78f81cc4 5730 return -EIO;
35ff8b9f 5731 }
78f81cc4
BD		 5732 }
5733
35ff8b9f
HMH		 5734 if (new_mute != mute) {
5735 /* level doesn't change */
5736
5737 cmos_cmd = (new_mute) ?
5738 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
78f81cc4 5739
c9bea99c 5740 if (issue_thinkpad_cmos_command(cmos_cmd) ||
78f81cc4
BD		 5741 !acpi_ec_write(volume_offset, level + new_mute))
5742 return -EIO;
5743 }
5744 }
5745
5746 return 0;
5747}
5748
a5763f22
HMH		 5749static struct ibm_struct volume_driver_data = {
5750 .name = "volume",
5751 .read = volume_read,
5752 .write = volume_write,
5753};
56b6aeb0
HMH		 5754
5755/*************************************************************************
5756 * Fan subdriver
5757 */
5758
5759/*
5760 * FAN ACCESS MODES
5761 *
efa27145 5762 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 5763 * ACPI GFAN method: returns fan level
5764 *
efa27145 5765 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 5766 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 5767 *
efa27145 5768 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 5769 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
5770 *
f51d1a39
HMH		 5771 * EC 0x2f (HFSP) might be available *for reading*, but do not use
5772 * it for writing.
56b6aeb0 5773 *
efa27145 5774 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 5775 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
5776 * Supported on almost all ThinkPads
56b6aeb0
HMH		 5777 *
5778 * Fan speed changes of any sort (including those caused by the
5779 * disengaged mode) are usually done slowly by the firmware as the
5780 * maximum ammount of fan duty cycle change per second seems to be
5781 * limited.
5782 *
5783 * Reading is not available if GFAN exists.
5784 * Writing is not available if SFAN exists.
5785 *
5786 * Bits
5787 * 7 automatic mode engaged;
5788 * (default operation mode of the ThinkPad)
5789 * fan level is ignored in this mode.
f51d1a39 5790 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 5791 * not available on all thinkpads. May disable
f51d1a39
HMH		 5792 * the tachometer while the fan controller ramps up
5793 * the speed (which can take up to a few *minutes*).
5794 * Speeds up fan to 100% duty-cycle, which is far above
5795 * the standard RPM levels. It is not impossible that
5796 * it could cause hardware damage.
56b6aeb0
HMH		 5797 * 5-3 unused in some models. Extra bits for fan level
5798 * in others, but still useless as all values above
5799 * 7 map to the same speed as level 7 in these models.
5800 * 2-0 fan level (0..7 usually)
5801 * 0x00 = stop
5802 * 0x07 = max (set when temperatures critical)
5803 * Some ThinkPads may have other levels, see
efa27145 5804 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 5805 *
5806 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
5807 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
5808 * does so, its initial value is meaningless (0x07).
5809 *
5810 * For firmware bugs, refer to:
5811 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5812 *
5813 * ----
5814 *
5815 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
5816 * Main fan tachometer reading (in RPM)
5817 *
5818 * This register is present on all ThinkPads with a new-style EC, and
5819 * it is known not to be present on the A21m/e, and T22, as there is
5820 * something else in offset 0x84 according to the ACPI DSDT. Other
5821 * ThinkPads from this same time period (and earlier) probably lack the
5822 * tachometer as well.
5823 *
5824 * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare
5825 * was never fixed by IBM to report the EC firmware version string
5826 * probably support the tachometer (like the early X models), so
5827 * detecting it is quite hard. We need more data to know for sure.
5828 *
5829 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
5830 * might result.
5831 *
f51d1a39
HMH		 5832 * FIRMWARE BUG: may go stale while the EC is switching to full speed
5833 * mode.
56b6aeb0
HMH		 5834 *
5835 * For firmware bugs, refer to:
5836 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5837 *
efa27145 5838 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 5839 * ThinkPad X31, X40, X41. Not available in the X60.
5840 *
5841 * FANS ACPI handle: takes three arguments: low speed, medium speed,
5842 * high speed. ACPI DSDT seems to map these three speeds to levels
5843 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
5844 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
5845 *
5846 * The speeds are stored on handles
5847 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
5848 *
5849 * There are three default speed sets, acessible as handles:
5850 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
5851 *
5852 * ACPI DSDT switches which set is in use depending on various
5853 * factors.
5854 *
efa27145 5855 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 5856 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
5857 * but the ACPI tables just mention level 7.
5858 */
5859
f74a27d4
HMH		 5860enum { /* Fan control constants */
5861 fan_status_offset = 0x2f, /* EC register 0x2f */
5862 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
5863 * 0x84 must be read before 0x85 */
5864
5865 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
5866 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
5867
5868 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
5869};
5870
5871enum fan_status_access_mode {
5872 TPACPI_FAN_NONE = 0, /* No fan status or control */
5873 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
5874 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
5875};
5876
5877enum fan_control_access_mode {
5878 TPACPI_FAN_WR_NONE = 0, /* No fan control */
5879 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
5880 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
5881 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
5882};
5883
5884enum fan_control_commands {
5885 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
5886 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
5887 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
5888 * and also watchdog cmd */
5889};
5890
5891static int fan_control_allowed;
5892
69ba91cb
HMH		 5893static enum fan_status_access_mode fan_status_access_mode;
5894static enum fan_control_access_mode fan_control_access_mode;
5895static enum fan_control_commands fan_control_commands;
78f81cc4 5896
778b4d74 5897static u8 fan_control_initial_status;
fe98a52c 5898static u8 fan_control_desired_level;
0081b162 5899static u8 fan_control_resume_level;
f74a27d4
HMH		 5900static int fan_watchdog_maxinterval;
5901
5902static struct mutex fan_mutex;
778b4d74 5903
25c68a33 5904static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 5905static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 5906
e0c7dfe7
HMH		 5907TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
5908TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 5909 "\\FSPD", /* 600e/x, 770e, 770x */
5910 ); /* all others */
e0c7dfe7 5911TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 5912 "JFNS", /* 770x-JL */
5913 ); /* all others */
5914
1c2ece75
HMH		 5915/*
5916 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
5917 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
5918 * be in auto mode (0x80).
5919 *
5920 * This is corrected by any write to HFSP either by the driver, or
5921 * by the firmware.
5922 *
5923 * We assume 0x07 really means auto mode while this quirk is active,
5924 * as this is far more likely than the ThinkPad being in level 7,
5925 * which is only used by the firmware during thermal emergencies.
5926 */
5927
5928static void fan_quirk1_detect(void)
5929{
5930 /* In some ThinkPads, neither the EC nor the ACPI
5931 * DSDT initialize the HFSP register, and it ends up
5932 * being initially set to 0x07 when it *could* be
5933 * either 0x07 or 0x80.
5934 *
5935 * Enable for TP-1Y (T43), TP-78 (R51e),
5936 * TP-76 (R52), TP-70 (T43, R52), which are known
5937 * to be buggy. */
5938 if (fan_control_initial_status == 0x07) {
5939 switch (thinkpad_id.ec_model) {
5940 case 0x5931: /* TP-1Y */
5941 case 0x3837: /* TP-78 */
5942 case 0x3637: /* TP-76 */
5943 case 0x3037: /* TP-70 */
5944 printk(TPACPI_NOTICE
5945 "fan_init: initial fan status is unknown, "
5946 "assuming it is in auto mode\n");
5947 tp_features.fan_ctrl_status_undef = 1;
5948 ;;
5949 }
5950 }
5951}
5952
5953static void fan_quirk1_handle(u8 *fan_status)
5954{
5955 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5956 if (*fan_status != fan_control_initial_status) {
5957 /* something changed the HFSP regisnter since
5958 * driver init time, so it is not undefined
5959 * anymore */
5960 tp_features.fan_ctrl_status_undef = 0;
5961 } else {
5962 /* Return most likely status. In fact, it
5963 * might be the only possible status */
5964 *fan_status = TP_EC_FAN_AUTO;
5965 }
5966 }
5967}
5968
fe98a52c 5969/*
b21a15f6 5970 * Call with fan_mutex held
fe98a52c 5971 */
b21a15f6 5972static void fan_update_desired_level(u8 status)
fe98a52c 5973{
b21a15f6
HMH		 5974 if ((status &
5975 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
5976 if (status > 7)
5977 fan_control_desired_level = 7;
5978 else
5979 fan_control_desired_level = status;
5980 }
5981}
fe98a52c 5982
b21a15f6
HMH		 5983static int fan_get_status(u8 *status)
5984{
5985 u8 s;
fe98a52c 5986
b21a15f6
HMH		 5987 /* TODO:
5988 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 5989
b21a15f6
HMH		 5990 switch (fan_status_access_mode) {
5991 case TPACPI_FAN_RD_ACPI_GFAN:
5992 /* 570, 600e/x, 770e, 770x */
fe98a52c 5993
b21a15f6
HMH		 5994 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
5995 return -EIO;
fe98a52c 5996
b21a15f6
HMH		 5997 if (likely(status))
5998 *status = s & 0x07;
fe98a52c 5999
b21a15f6
HMH		 6000 break;
6001
6002 case TPACPI_FAN_RD_TPEC:
6003 /* all except 570, 600e/x, 770e, 770x */
6004 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
6005 return -EIO;
6006
1c2ece75 6007 if (likely(status)) {
b21a15f6 6008 *status = s;
1c2ece75
HMH		 6009 fan_quirk1_handle(status);
6010 }
fe98a52c 6011
fe98a52c 6012 break;
b21a15f6 6013
fe98a52c 6014 default:
b21a15f6 6015 return -ENXIO;
fe98a52c
HMH		 6016 }
6017
b21a15f6
HMH		 6018 return 0;
6019}
fe98a52c 6020
b21a15f6
HMH		 6021static int fan_get_status_safe(u8 *status)
6022{
6023 int rc;
6024 u8 s;
fe98a52c 6025
7646ea88 6026 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 6027 return -ERESTARTSYS;
6028 rc = fan_get_status(&s);
6029 if (!rc)
6030 fan_update_desired_level(s);
6031 mutex_unlock(&fan_mutex);
fe98a52c 6032
b21a15f6
HMH		 6033 if (status)
6034 *status = s;
fe98a52c 6035
b21a15f6
HMH		 6036 return rc;
6037}
6038
6039static int fan_get_speed(unsigned int *speed)
fe98a52c 6040{
b21a15f6 6041 u8 hi, lo;
fe98a52c 6042
b21a15f6
HMH		 6043 switch (fan_status_access_mode) {
6044 case TPACPI_FAN_RD_TPEC:
6045 /* all except 570, 600e/x, 770e, 770x */
6046 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
6047 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
6048 return -EIO;
fe98a52c 6049
b21a15f6
HMH		 6050 if (likely(speed))
6051 *speed = (hi << 8) | lo;
fe98a52c 6052
b21a15f6 6053 break;
fe98a52c 6054
b21a15f6
HMH		 6055 default:
6056 return -ENXIO;
6057 }
fe98a52c 6058
b21a15f6 6059 return 0;
fe98a52c
HMH		 6060}
6061
b21a15f6 6062static int fan_set_level(int level)
fe98a52c 6063{
b21a15f6
HMH		 6064 if (!fan_control_allowed)
6065 return -EPERM;
fe98a52c 6066
b21a15f6
HMH		 6067 switch (fan_control_access_mode) {
6068 case TPACPI_FAN_WR_ACPI_SFAN:
6069 if (level >= 0 && level <= 7) {
6070 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
6071 return -EIO;
6072 } else
6073 return -EINVAL;
6074 break;
fe98a52c 6075
b21a15f6
HMH		 6076 case TPACPI_FAN_WR_ACPI_FANS:
6077 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 6078 if (!(level & TP_EC_FAN_AUTO) &&
6079 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 6080 ((level < 0) || (level > 7)))
6081 return -EINVAL;
fe98a52c 6082
b21a15f6
HMH		 6083 /* safety net should the EC not support AUTO
6084 * or FULLSPEED mode bits and just ignore them */
6085 if (level & TP_EC_FAN_FULLSPEED)
6086 level |= 7; /* safety min speed 7 */
547266e4 6087 else if (level & TP_EC_FAN_AUTO)
b21a15f6 6088 level |= 4; /* safety min speed 4 */
fe98a52c 6089
b21a15f6
HMH		 6090 if (!acpi_ec_write(fan_status_offset, level))
6091 return -EIO;
6092 else
6093 tp_features.fan_ctrl_status_undef = 0;
6094 break;
fe98a52c 6095
b21a15f6
HMH		 6096 default:
6097 return -ENXIO;
6098 }
6099 return 0;
fe98a52c
HMH		 6100}
6101
b21a15f6 6102static int fan_set_level_safe(int level)
fe98a52c 6103{
b21a15f6 6104 int rc;
fe98a52c 6105
b21a15f6
HMH		 6106 if (!fan_control_allowed)
6107 return -EPERM;
fe98a52c 6108
7646ea88 6109 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6110 return -ERESTARTSYS;
fe98a52c 6111
b21a15f6
HMH		 6112 if (level == TPACPI_FAN_LAST_LEVEL)
6113 level = fan_control_desired_level;
fe98a52c 6114
b21a15f6
HMH		 6115 rc = fan_set_level(level);
6116 if (!rc)
6117 fan_update_desired_level(level);
6118
6119 mutex_unlock(&fan_mutex);
6120 return rc;
fe98a52c
HMH		 6121}
6122
b21a15f6 6123static int fan_set_enable(void)
fe98a52c 6124{
b21a15f6
HMH		 6125 u8 s;
6126 int rc;
fe98a52c 6127
ecf2a80a
HMH		 6128 if (!fan_control_allowed)
6129 return -EPERM;
6130
7646ea88 6131 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6132 return -ERESTARTSYS;
fe98a52c 6133
b21a15f6
HMH		 6134 switch (fan_control_access_mode) {
6135 case TPACPI_FAN_WR_ACPI_FANS:
6136 case TPACPI_FAN_WR_TPEC:
6137 rc = fan_get_status(&s);
6138 if (rc < 0)
6139 break;
fe98a52c 6140
b21a15f6
HMH		 6141 /* Don't go out of emergency fan mode */
6142 if (s != 7) {
6143 s &= 0x07;
6144 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
6145 }
fe98a52c 6146
b21a15f6
HMH		 6147 if (!acpi_ec_write(fan_status_offset, s))
6148 rc = -EIO;
6149 else {
6150 tp_features.fan_ctrl_status_undef = 0;
6151 rc = 0;
6152 }
6153 break;
fe98a52c 6154
b21a15f6
HMH		 6155 case TPACPI_FAN_WR_ACPI_SFAN:
6156 rc = fan_get_status(&s);
6157 if (rc < 0)
6158 break;
fe98a52c 6159
b21a15f6 6160 s &= 0x07;
fe98a52c 6161
b21a15f6
HMH		 6162 /* Set fan to at least level 4 */
6163 s |= 4;
fe08bc4b 6164
b21a15f6 6165 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 6166 rc = -EIO;
b21a15f6
HMH		 6167 else
6168 rc = 0;
6169 break;
78f81cc4 6170
b21a15f6
HMH		 6171 default:
6172 rc = -ENXIO;
6173 }
5fba344c 6174
b21a15f6
HMH		 6175 mutex_unlock(&fan_mutex);
6176 return rc;
69ba91cb 6177}
78f81cc4 6178
b21a15f6 6179static int fan_set_disable(void)
78f81cc4 6180{
b21a15f6 6181 int rc;
c52f0aa5 6182
b21a15f6
HMH		 6183 if (!fan_control_allowed)
6184 return -EPERM;
78f81cc4 6185
7646ea88 6186 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6187 return -ERESTARTSYS;
3ef8a609 6188
b21a15f6
HMH		 6189 rc = 0;
6190 switch (fan_control_access_mode) {
6191 case TPACPI_FAN_WR_ACPI_FANS:
6192 case TPACPI_FAN_WR_TPEC:
6193 if (!acpi_ec_write(fan_status_offset, 0x00))
6194 rc = -EIO;
6195 else {
6196 fan_control_desired_level = 0;
6197 tp_features.fan_ctrl_status_undef = 0;
6198 }
3ef8a609
HMH		 6199 break;
6200
b21a15f6
HMH		 6201 case TPACPI_FAN_WR_ACPI_SFAN:
6202 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
6203 rc = -EIO;
6204 else
6205 fan_control_desired_level = 0;
c52f0aa5
HMH		 6206 break;
6207
6208 default:
b21a15f6 6209 rc = -ENXIO;
78f81cc4
BD		 6210 }
6211
fe98a52c 6212
fe98a52c 6213 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 6214 return rc;
6215}
6216
b21a15f6 6217static int fan_set_speed(int speed)
c52f0aa5 6218{
b21a15f6 6219 int rc;
c52f0aa5 6220
b21a15f6
HMH		 6221 if (!fan_control_allowed)
6222 return -EPERM;
3ef8a609 6223
7646ea88 6224 if (mutex_lock_killable(&fan_mutex))
b21a15f6 6225 return -ERESTARTSYS;
c52f0aa5 6226
b21a15f6
HMH		 6227 rc = 0;
6228 switch (fan_control_access_mode) {
6229 case TPACPI_FAN_WR_ACPI_FANS:
6230 if (speed >= 0 && speed <= 65535) {
6231 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
6232 speed, speed, speed))
6233 rc = -EIO;
6234 } else
6235 rc = -EINVAL;
c52f0aa5
HMH		 6236 break;
6237
6238 default:
b21a15f6 6239 rc = -ENXIO;
c52f0aa5
HMH		 6240 }
6241
b21a15f6
HMH		 6242 mutex_unlock(&fan_mutex);
6243 return rc;
16663a87
HMH		 6244}
6245
6246static void fan_watchdog_reset(void)
6247{
94954cc6 6248 static int fan_watchdog_active;
16663a87 6249
4985cd0a
HMH		 6250 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
6251 return;
6252
16663a87
HMH		 6253 if (fan_watchdog_active)
6254 cancel_delayed_work(&fan_watchdog_task);
6255
8fef502e
HMH		 6256 if (fan_watchdog_maxinterval > 0 &&
6257 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
16663a87 6258 fan_watchdog_active = 1;
e0e3c061 6259 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
16663a87
HMH		 6260 msecs_to_jiffies(fan_watchdog_maxinterval
6261 * 1000))) {
35ff8b9f 6262 printk(TPACPI_ERR
e0e3c061 6263 "failed to queue the fan watchdog, "
16663a87
HMH		 6264 "watchdog will not trigger\n");
6265 }
6266 } else
6267 fan_watchdog_active = 0;
6268}
6269
b21a15f6 6270static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 6271{
b21a15f6 6272 int rc;
18ad7996 6273
b21a15f6
HMH		 6274 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
6275 return;
a12095c2 6276
e0c7dfe7 6277 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
b21a15f6
HMH		 6278 rc = fan_set_enable();
6279 if (rc < 0) {
e0c7dfe7 6280 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
b21a15f6
HMH		 6281 "will try again later...\n", -rc);
6282 /* reschedule for later */
6283 fan_watchdog_reset();
6284 }
6285}
eaa7571b 6286
b21a15f6
HMH		 6287/*
6288 * SYSFS fan layout: hwmon compatible (device)
6289 *
6290 * pwm*_enable:
6291 * 0: "disengaged" mode
6292 * 1: manual mode
6293 * 2: native EC "auto" mode (recommended, hardware default)
6294 *
6295 * pwm*: set speed in manual mode, ignored otherwise.
6296 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6297 * interpolation.
6298 *
6299 * fan*_input: tachometer reading, RPM
6300 *
6301 *
6302 * SYSFS fan layout: extensions
6303 *
6304 * fan_watchdog (driver):
6305 * fan watchdog interval in seconds, 0 disables (default), max 120
6306 */
6307
6308/* sysfs fan pwm1_enable ----------------------------------------------- */
6309static ssize_t fan_pwm1_enable_show(struct device *dev,
6310 struct device_attribute *attr,
6311 char *buf)
6312{
6313 int res, mode;
6314 u8 status;
6315
6316 res = fan_get_status_safe(&status);
6317 if (res)
6318 return res;
6319
b21a15f6
HMH		 6320 if (status & TP_EC_FAN_FULLSPEED) {
6321 mode = 0;
6322 } else if (status & TP_EC_FAN_AUTO) {
6323 mode = 2;
6324 } else
6325 mode = 1;
6326
6327 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
6328}
a12095c2 6329
b21a15f6
HMH		 6330static ssize_t fan_pwm1_enable_store(struct device *dev,
6331 struct device_attribute *attr,
6332 const char *buf, size_t count)
6333{
6334 unsigned long t;
6335 int res, level;
6336
6337 if (parse_strtoul(buf, 2, &t))
6338 return -EINVAL;
6339
6340 switch (t) {
6341 case 0:
6342 level = TP_EC_FAN_FULLSPEED;
6343 break;
6344 case 1:
6345 level = TPACPI_FAN_LAST_LEVEL;
6346 break;
6347 case 2:
6348 level = TP_EC_FAN_AUTO;
6349 break;
6350 case 3:
6351 /* reserved for software-controlled auto mode */
6352 return -ENOSYS;
18ad7996 6353 default:
b21a15f6 6354 return -EINVAL;
18ad7996 6355 }
b21a15f6
HMH		 6356
6357 res = fan_set_level_safe(level);
6358 if (res == -ENXIO)
6359 return -EINVAL;
6360 else if (res < 0)
6361 return res;
6362
6363 fan_watchdog_reset();
6364
6365 return count;
18ad7996
HMH		 6366}
6367
b21a15f6
HMH		 6368static struct device_attribute dev_attr_fan_pwm1_enable =
6369 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
6370 fan_pwm1_enable_show, fan_pwm1_enable_store);
6371
6372/* sysfs fan pwm1 ------------------------------------------------------ */
6373static ssize_t fan_pwm1_show(struct device *dev,
6374 struct device_attribute *attr,
6375 char *buf)
fe98a52c 6376{
b21a15f6
HMH		 6377 int res;
6378 u8 status;
fe98a52c 6379
b21a15f6
HMH		 6380 res = fan_get_status_safe(&status);
6381 if (res)
6382 return res;
ecf2a80a 6383
b21a15f6
HMH		 6384 if ((status &
6385 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
6386 status = fan_control_desired_level;
fe98a52c 6387
b21a15f6
HMH		 6388 if (status > 7)
6389 status = 7;
fe98a52c 6390
b21a15f6 6391 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 6392}
6393
b21a15f6
HMH		 6394static ssize_t fan_pwm1_store(struct device *dev,
6395 struct device_attribute *attr,
6396 const char *buf, size_t count)
18ad7996 6397{
b21a15f6 6398 unsigned long s;
1c6a334e 6399 int rc;
b21a15f6 6400 u8 status, newlevel;
1c6a334e 6401
b21a15f6
HMH		 6402 if (parse_strtoul(buf, 255, &s))
6403 return -EINVAL;
6404
6405 /* scale down from 0-255 to 0-7 */
6406 newlevel = (s >> 5) & 0x07;
ecf2a80a 6407
7646ea88 6408 if (mutex_lock_killable(&fan_mutex))
fc589a3c 6409 return -ERESTARTSYS;
40ca9fdf 6410
b21a15f6
HMH		 6411 rc = fan_get_status(&status);
6412 if (!rc && (status &
6413 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6414 rc = fan_set_level(newlevel);
6415 if (rc == -ENXIO)
6416 rc = -EINVAL;
6417 else if (!rc) {
6418 fan_update_desired_level(newlevel);
6419 fan_watchdog_reset();
eaa7571b 6420 }
b21a15f6 6421 }
1c6a334e 6422
b21a15f6
HMH		 6423 mutex_unlock(&fan_mutex);
6424 return (rc)? rc : count;
6425}
1c6a334e 6426
b21a15f6
HMH		 6427static struct device_attribute dev_attr_fan_pwm1 =
6428 __ATTR(pwm1, S_IWUSR | S_IRUGO,
6429 fan_pwm1_show, fan_pwm1_store);
1c6a334e 6430
b21a15f6
HMH		 6431/* sysfs fan fan1_input ------------------------------------------------ */
6432static ssize_t fan_fan1_input_show(struct device *dev,
6433 struct device_attribute *attr,
6434 char *buf)
6435{
6436 int res;
6437 unsigned int speed;
1c6a334e 6438
b21a15f6
HMH		 6439 res = fan_get_speed(&speed);
6440 if (res < 0)
6441 return res;
1c6a334e 6442
b21a15f6
HMH		 6443 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
6444}
18ad7996 6445
b21a15f6
HMH		 6446static struct device_attribute dev_attr_fan_fan1_input =
6447 __ATTR(fan1_input, S_IRUGO,
6448 fan_fan1_input_show, NULL);
40ca9fdf 6449
b21a15f6
HMH		 6450/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
6451static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
6452 char *buf)
6453{
6454 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 6455}
6456
b21a15f6
HMH		 6457static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
6458 const char *buf, size_t count)
18ad7996 6459{
b21a15f6
HMH		 6460 unsigned long t;
6461
6462 if (parse_strtoul(buf, 120, &t))
6463 return -EINVAL;
40ca9fdf 6464
ecf2a80a
HMH		 6465 if (!fan_control_allowed)
6466 return -EPERM;
6467
b21a15f6
HMH		 6468 fan_watchdog_maxinterval = t;
6469 fan_watchdog_reset();
40ca9fdf 6470
b21a15f6
HMH		 6471 return count;
6472}
6473
6474static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
6475 fan_fan_watchdog_show, fan_fan_watchdog_store);
6476
6477/* --------------------------------------------------------------------- */
6478static struct attribute *fan_attributes[] = {
6479 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
6480 &dev_attr_fan_fan1_input.attr,
6481 NULL
6482};
6483
6484static const struct attribute_group fan_attr_group = {
6485 .attrs = fan_attributes,
6486};
6487
6488static int __init fan_init(struct ibm_init_struct *iibm)
6489{
6490 int rc;
6491
6492 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
6493
6494 mutex_init(&fan_mutex);
6495 fan_status_access_mode = TPACPI_FAN_NONE;
6496 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6497 fan_control_commands = 0;
6498 fan_watchdog_maxinterval = 0;
6499 tp_features.fan_ctrl_status_undef = 0;
6500 fan_control_desired_level = 7;
6501
e0c7dfe7
HMH		 6502 TPACPI_ACPIHANDLE_INIT(fans);
6503 TPACPI_ACPIHANDLE_INIT(gfan);
6504 TPACPI_ACPIHANDLE_INIT(sfan);
b21a15f6
HMH		 6505
6506 if (gfan_handle) {
6507 /* 570, 600e/x, 770e, 770x */
6508 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
6509 } else {
6510 /* all other ThinkPads: note that even old-style
6511 * ThinkPad ECs supports the fan control register */
6512 if (likely(acpi_ec_read(fan_status_offset,
6513 &fan_control_initial_status))) {
6514 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
1c2ece75 6515 fan_quirk1_detect();
b21a15f6 6516 } else {
e0c7dfe7 6517 printk(TPACPI_ERR
b21a15f6
HMH		 6518 "ThinkPad ACPI EC access misbehaving, "
6519 "fan status and control unavailable\n");
6520 return 1;
6521 }
6522 }
6523
6524 if (sfan_handle) {
6525 /* 570, 770x-JL */
6526 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
6527 fan_control_commands |=
6528 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
6529 } else {
6530 if (!gfan_handle) {
6531 /* gfan without sfan means no fan control */
6532 /* all other models implement TP EC 0x2f control */
6533
6534 if (fans_handle) {
6535 /* X31, X40, X41 */
6536 fan_control_access_mode =
6537 TPACPI_FAN_WR_ACPI_FANS;
6538 fan_control_commands |=
6539 TPACPI_FAN_CMD_SPEED |
6540 TPACPI_FAN_CMD_LEVEL |
6541 TPACPI_FAN_CMD_ENABLE;
6542 } else {
6543 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
6544 fan_control_commands |=
6545 TPACPI_FAN_CMD_LEVEL |
6546 TPACPI_FAN_CMD_ENABLE;
6547 }
fe98a52c 6548 }
b21a15f6 6549 }
18ad7996 6550
b21a15f6
HMH		 6551 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
6552 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
6553 fan_control_access_mode != TPACPI_FAN_WR_NONE),
6554 fan_status_access_mode, fan_control_access_mode);
1c6a334e 6555
b21a15f6
HMH		 6556 /* fan control master switch */
6557 if (!fan_control_allowed) {
6558 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6559 fan_control_commands = 0;
6560 dbg_printk(TPACPI_DBG_INIT,
6561 "fan control features disabled by parameter\n");
18ad7996 6562 }
40ca9fdf 6563
b21a15f6
HMH		 6564 /* update fan_control_desired_level */
6565 if (fan_status_access_mode != TPACPI_FAN_NONE)
6566 fan_get_status_safe(NULL);
fe98a52c 6567
b21a15f6
HMH		 6568 if (fan_status_access_mode != TPACPI_FAN_NONE ||
6569 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
6570 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
6571 &fan_attr_group);
b21a15f6
HMH		 6572 if (rc < 0)
6573 return rc;
9c0a76e1
HMH		 6574
6575 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
6576 &driver_attr_fan_watchdog);
6577 if (rc < 0) {
6578 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
6579 &fan_attr_group);
6580 return rc;
6581 }
b21a15f6
HMH		 6582 return 0;
6583 } else
6584 return 1;
56b6aeb0
HMH		 6585}
6586
b21a15f6 6587static void fan_exit(void)
56b6aeb0 6588{
35ff8b9f
HMH		 6589 vdbg_printk(TPACPI_DBG_EXIT,
6590 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 6591
b21a15f6
HMH		 6592 /* FIXME: can we really do this unconditionally? */
6593 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 6594 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
6595 &driver_attr_fan_watchdog);
40ca9fdf 6596
b21a15f6 6597 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 6598 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 6599}
6600
75700e53
HMH		 6601static void fan_suspend(pm_message_t state)
6602{
0081b162
HMH		 6603 int rc;
6604
75700e53
HMH		 6605 if (!fan_control_allowed)
6606 return;
6607
6608 /* Store fan status in cache */
0081b162
HMH		 6609 fan_control_resume_level = 0;
6610 rc = fan_get_status_safe(&fan_control_resume_level);
6611 if (rc < 0)
6612 printk(TPACPI_NOTICE
6613 "failed to read fan level for later "
6614 "restore during resume: %d\n", rc);
6615
6616 /* if it is undefined, don't attempt to restore it.
6617 * KEEP THIS LAST */
75700e53 6618 if (tp_features.fan_ctrl_status_undef)
0081b162 6619 fan_control_resume_level = 0;
75700e53
HMH		 6620}
6621
6622static void fan_resume(void)
6623{
75700e53
HMH		 6624 u8 current_level = 7;
6625 bool do_set = false;
0081b162 6626 int rc;
75700e53
HMH		 6627
6628 /* DSDT *always* updates status on resume */
6629 tp_features.fan_ctrl_status_undef = 0;
6630
75700e53 6631 if (!fan_control_allowed ||
0081b162 6632 !fan_control_resume_level ||
75700e53
HMH		 6633 (fan_get_status_safe(&current_level) < 0))
6634 return;
6635
6636 switch (fan_control_access_mode) {
6637 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 6638 /* never decrease fan level */
6639 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 6640 break;
6641 case TPACPI_FAN_WR_ACPI_FANS:
6642 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 6643 /* never decrease fan level, scale is:
6644 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
6645 *
6646 * We expect the firmware to set either 7 or AUTO, but we
6647 * handle FULLSPEED out of paranoia.
6648 *
6649 * So, we can safely only restore FULLSPEED or 7, anything
6650 * else could slow the fan. Restoring AUTO is useless, at
6651 * best that's exactly what the DSDT already set (it is the
6652 * slower it uses).
6653 *
6654 * Always keep in mind that the DSDT *will* have set the
6655 * fans to what the vendor supposes is the best level. We
6656 * muck with it only to speed the fan up.
6657 */
6658 if (fan_control_resume_level != 7 &&
6659 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
6660 return;
6661 else
6662 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
6663 (current_level != fan_control_resume_level);
75700e53
HMH		 6664 break;
6665 default:
6666 return;
6667 }
6668 if (do_set) {
6669 printk(TPACPI_NOTICE
6670 "restoring fan level to 0x%02x\n",
0081b162
HMH		 6671 fan_control_resume_level);
6672 rc = fan_set_level_safe(fan_control_resume_level);
6673 if (rc < 0)
6674 printk(TPACPI_NOTICE
6675 "failed to restore fan level: %d\n", rc);
75700e53
HMH		 6676 }
6677}
6678
56b6aeb0
HMH		 6679static int fan_read(char *p)
6680{
6681 int len = 0;
6682 int rc;
6683 u8 status;
6684 unsigned int speed = 0;
6685
6686 switch (fan_status_access_mode) {
efa27145 6687 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 6688 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 6689 rc = fan_get_status_safe(&status);
6690 if (rc < 0)
56b6aeb0
HMH		 6691 return rc;
6692
6693 len += sprintf(p + len, "status:\t\t%s\n"
6694 "level:\t\t%d\n",
6695 (status != 0) ? "enabled" : "disabled", status);
6696 break;
6697
efa27145 6698 case TPACPI_FAN_RD_TPEC:
56b6aeb0 6699 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 6700 rc = fan_get_status_safe(&status);
6701 if (rc < 0)
56b6aeb0
HMH		 6702 return rc;
6703
56b6aeb0
HMH		 6704 len += sprintf(p + len, "status:\t\t%s\n",
6705 (status != 0) ? "enabled" : "disabled");
6706
35ff8b9f
HMH		 6707 rc = fan_get_speed(&speed);
6708 if (rc < 0)
56b6aeb0
HMH		 6709 return rc;
6710
6711 len += sprintf(p + len, "speed:\t\t%d\n", speed);
6712
efa27145 6713 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0
HMH		 6714 /* Disengaged mode takes precedence */
6715 len += sprintf(p + len, "level:\t\tdisengaged\n");
efa27145 6716 else if (status & TP_EC_FAN_AUTO)
56b6aeb0
HMH		 6717 len += sprintf(p + len, "level:\t\tauto\n");
6718 else
6719 len += sprintf(p + len, "level:\t\t%d\n", status);
6720 break;
6721
efa27145 6722 case TPACPI_FAN_NONE:
56b6aeb0
HMH		 6723 default:
6724 len += sprintf(p + len, "status:\t\tnot supported\n");
6725 }
6726
efa27145 6727 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
56b6aeb0
HMH		 6728 len += sprintf(p + len, "commands:\tlevel <level>");
6729
6730 switch (fan_control_access_mode) {
efa27145 6731 case TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 6732 len += sprintf(p + len, " (<level> is 0-7)\n");
6733 break;
6734
6735 default:
6736 len += sprintf(p + len, " (<level> is 0-7, "
fe98a52c 6737 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 6738 break;
6739 }
6740 }
18ad7996 6741
efa27145 6742 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
56b6aeb0 6743 len += sprintf(p + len, "commands:\tenable, disable\n"
35ff8b9f
HMH		 6744 "commands:\twatchdog <timeout> (<timeout> "
6745 "is 0 (off), 1-120 (seconds))\n");
1da177e4 6746
efa27145 6747 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
56b6aeb0
HMH		 6748 len += sprintf(p + len, "commands:\tspeed <speed>"
6749 " (<speed> is 0-65535)\n");
6750
6751 return len;
78f81cc4
BD		 6752}
6753
18ad7996
HMH		 6754static int fan_write_cmd_level(const char *cmd, int *rc)
6755{
6756 int level;
6757
a12095c2 6758 if (strlencmp(cmd, "level auto") == 0)
efa27145 6759 level = TP_EC_FAN_AUTO;
fe98a52c 6760 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 6761 (strlencmp(cmd, "level full-speed") == 0))
efa27145 6762 level = TP_EC_FAN_FULLSPEED;
a12095c2 6763 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 6764 return 0;
6765
35ff8b9f
HMH		 6766 *rc = fan_set_level_safe(level);
6767 if (*rc == -ENXIO)
e0c7dfe7 6768 printk(TPACPI_ERR "level command accepted for unsupported "
18ad7996
HMH		 6769 "access mode %d", fan_control_access_mode);
6770
6771 return 1;
6772}
6773
6774static int fan_write_cmd_enable(const char *cmd, int *rc)
6775{
6776 if (strlencmp(cmd, "enable") != 0)
6777 return 0;
6778
35ff8b9f
HMH		 6779 *rc = fan_set_enable();
6780 if (*rc == -ENXIO)
e0c7dfe7 6781 printk(TPACPI_ERR "enable command accepted for unsupported "
18ad7996
HMH		 6782 "access mode %d", fan_control_access_mode);
6783
6784 return 1;
6785}
6786
6787static int fan_write_cmd_disable(const char *cmd, int *rc)
6788{
6789 if (strlencmp(cmd, "disable") != 0)
6790 return 0;
6791
35ff8b9f
HMH		 6792 *rc = fan_set_disable();
6793 if (*rc == -ENXIO)
e0c7dfe7 6794 printk(TPACPI_ERR "disable command accepted for unsupported "
18ad7996
HMH		 6795 "access mode %d", fan_control_access_mode);
6796
6797 return 1;
6798}
6799
6800static int fan_write_cmd_speed(const char *cmd, int *rc)
6801{
6802 int speed;
6803
a8b7a662
HMH		 6804 /* TODO:
6805 * Support speed <low> <medium> <high> ? */
6806
18ad7996
HMH		 6807 if (sscanf(cmd, "speed %d", &speed) != 1)
6808 return 0;
6809
35ff8b9f
HMH		 6810 *rc = fan_set_speed(speed);
6811 if (*rc == -ENXIO)
e0c7dfe7 6812 printk(TPACPI_ERR "speed command accepted for unsupported "
18ad7996
HMH		 6813 "access mode %d", fan_control_access_mode);
6814
6815 return 1;
6816}
6817
16663a87
HMH		 6818static int fan_write_cmd_watchdog(const char *cmd, int *rc)
6819{
6820 int interval;
6821
6822 if (sscanf(cmd, "watchdog %d", &interval) != 1)
6823 return 0;
6824
6825 if (interval < 0 || interval > 120)
6826 *rc = -EINVAL;
6827 else
6828 fan_watchdog_maxinterval = interval;
6829
6830 return 1;
6831}
6832
18ad7996
HMH		 6833static int fan_write(char *buf)
6834{
6835 char *cmd;
6836 int rc = 0;
6837
6838 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 6839 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 6840 fan_write_cmd_level(cmd, &rc)) &&
efa27145 6841 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 6842 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 6843 fan_write_cmd_disable(cmd, &rc) ||
6844 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 6845 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 6846 fan_write_cmd_speed(cmd, &rc))
6847 )
6848 rc = -EINVAL;
16663a87
HMH		 6849 else if (!rc)
6850 fan_watchdog_reset();
18ad7996
HMH		 6851 }
6852
6853 return rc;
6854}
6855
a5763f22
HMH		 6856static struct ibm_struct fan_driver_data = {
6857 .name = "fan",
6858 .read = fan_read,
6859 .write = fan_write,
6860 .exit = fan_exit,
75700e53
HMH		 6861 .suspend = fan_suspend,
6862 .resume = fan_resume,
a5763f22
HMH		 6863};
6864
56b6aeb0
HMH		 6865/****************************************************************************
6866 ****************************************************************************
6867 *
6868 * Infrastructure
6869 *
6870 ****************************************************************************
6871 ****************************************************************************/
6872
7fd40029
HMH		 6873/* sysfs name ---------------------------------------------------------- */
6874static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
6875 struct device_attribute *attr,
6876 char *buf)
6877{
e0c7dfe7 6878 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 6879}
6880
6881static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
6882 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
6883
6884/* --------------------------------------------------------------------- */
6885
56b6aeb0 6886/* /proc support */
94954cc6 6887static struct proc_dir_entry *proc_dir;
16663a87 6888
56b6aeb0
HMH		 6889/*
6890 * Module and infrastructure proble, init and exit handling
6891 */
1da177e4 6892
b21a15f6
HMH		 6893static int force_load;
6894
fe08bc4b 6895#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 6896static const char * __init str_supported(int is_supported)
fe08bc4b 6897{
a5763f22 6898 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 6899
a5763f22 6900 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 6901}
6902#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
6903
b21a15f6
HMH		 6904static void ibm_exit(struct ibm_struct *ibm)
6905{
6906 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
6907
6908 list_del_init(&ibm->all_drivers);
6909
6910 if (ibm->flags.acpi_notify_installed) {
6911 dbg_printk(TPACPI_DBG_EXIT,
6912 "%s: acpi_remove_notify_handler\n", ibm->name);
6913 BUG_ON(!ibm->acpi);
6914 acpi_remove_notify_handler(*ibm->acpi->handle,
6915 ibm->acpi->type,
6916 dispatch_acpi_notify);
6917 ibm->flags.acpi_notify_installed = 0;
6918 ibm->flags.acpi_notify_installed = 0;
6919 }
6920
6921 if (ibm->flags.proc_created) {
6922 dbg_printk(TPACPI_DBG_EXIT,
6923 "%s: remove_proc_entry\n", ibm->name);
6924 remove_proc_entry(ibm->name, proc_dir);
6925 ibm->flags.proc_created = 0;
6926 }
6927
6928 if (ibm->flags.acpi_driver_registered) {
6929 dbg_printk(TPACPI_DBG_EXIT,
6930 "%s: acpi_bus_unregister_driver\n", ibm->name);
6931 BUG_ON(!ibm->acpi);
6932 acpi_bus_unregister_driver(ibm->acpi->driver);
6933 kfree(ibm->acpi->driver);
6934 ibm->acpi->driver = NULL;
6935 ibm->flags.acpi_driver_registered = 0;
6936 }
6937
6938 if (ibm->flags.init_called && ibm->exit) {
6939 ibm->exit();
6940 ibm->flags.init_called = 0;
6941 }
6942
6943 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
6944}
f74a27d4 6945
a5763f22 6946static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 6947{
6948 int ret;
a5763f22 6949 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 6950 struct proc_dir_entry *entry;
6951
a5763f22
HMH		 6952 BUG_ON(ibm == NULL);
6953
6954 INIT_LIST_HEAD(&ibm->all_drivers);
6955
92641177 6956 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 6957 return 0;
6958
fe08bc4b
HMH		 6959 dbg_printk(TPACPI_DBG_INIT,
6960 "probing for %s\n", ibm->name);
6961
a5763f22
HMH		 6962 if (iibm->init) {
6963 ret = iibm->init(iibm);
5fba344c
HMH		 6964 if (ret > 0)
6965 return 0; /* probe failed */
6966 if (ret)
1da177e4 6967 return ret;
a5763f22 6968
92641177 6969 ibm->flags.init_called = 1;
1da177e4
LT		 6970 }
6971
8d376cd6
HMH		 6972 if (ibm->acpi) {
6973 if (ibm->acpi->hid) {
6974 ret = register_tpacpi_subdriver(ibm);
6975 if (ret)
6976 goto err_out;
6977 }
5fba344c 6978
8d376cd6
HMH		 6979 if (ibm->acpi->notify) {
6980 ret = setup_acpi_notify(ibm);
6981 if (ret == -ENODEV) {
e0c7dfe7 6982 printk(TPACPI_NOTICE "disabling subdriver %s\n",
8d376cd6
HMH		 6983 ibm->name);
6984 ret = 0;
6985 goto err_out;
6986 }
6987 if (ret < 0)
6988 goto err_out;
5fba344c 6989 }
5fba344c
HMH		 6990 }
6991
fe08bc4b
HMH		 6992 dbg_printk(TPACPI_DBG_INIT,
6993 "%s installed\n", ibm->name);
6994
78f81cc4
BD		 6995 if (ibm->read) {
6996 entry = create_proc_entry(ibm->name,
6997 S_IFREG | S_IRUGO | S_IWUSR,
6998 proc_dir);
6999 if (!entry) {
e0c7dfe7 7000 printk(TPACPI_ERR "unable to create proc entry %s\n",
78f81cc4 7001 ibm->name);
5fba344c
HMH		 7002 ret = -ENODEV;
7003 goto err_out;
78f81cc4
BD		 7004 }
7005 entry->owner = THIS_MODULE;
7006 entry->data = ibm;
8d376cd6 7007 entry->read_proc = &dispatch_procfs_read;
78f81cc4 7008 if (ibm->write)
8d376cd6 7009 entry->write_proc = &dispatch_procfs_write;
92641177 7010 ibm->flags.proc_created = 1;
78f81cc4 7011 }
1da177e4 7012
a5763f22
HMH		 7013 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
7014
1da177e4 7015 return 0;
5fba344c
HMH		 7016
7017err_out:
fe08bc4b
HMH		 7018 dbg_printk(TPACPI_DBG_INIT,
7019 "%s: at error exit path with result %d\n",
7020 ibm->name, ret);
7021
5fba344c
HMH		 7022 ibm_exit(ibm);
7023 return (ret < 0)? ret : 0;
1da177e4
LT		 7024}
7025
56b6aeb0
HMH		 7026/* Probing */
7027
bf20e740
HMH		 7028/* returns 0 - probe ok, or < 0 - probe error.
7029 * Probe ok doesn't mean thinkpad found.
7030 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7031static int __must_check __init get_thinkpad_model_data(
7032 struct thinkpad_id_data *tp)
1da177e4 7033{
1855256c 7034 const struct dmi_device *dev = NULL;
56b6aeb0 7035 char ec_fw_string[18];
bf20e740 7036 char const *s;
1da177e4 7037
d5a2f2f1 7038 if (!tp)
bf20e740 7039 return -EINVAL;
d5a2f2f1
HMH		 7040
7041 memset(tp, 0, sizeof(*tp));
7042
7043 if (dmi_name_in_vendors("IBM"))
7044 tp->vendor = PCI_VENDOR_ID_IBM;
7045 else if (dmi_name_in_vendors("LENOVO"))
7046 tp->vendor = PCI_VENDOR_ID_LENOVO;
7047 else
bf20e740 7048 return 0;
d5a2f2f1 7049
bf20e740
HMH		 7050 s = dmi_get_system_info(DMI_BIOS_VERSION);
7051 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
7052 if (s && !tp->bios_version_str)
7053 return -ENOMEM;
d5a2f2f1 7054 if (!tp->bios_version_str)
bf20e740 7055 return 0;
d5a2f2f1
HMH		 7056 tp->bios_model = tp->bios_version_str[0]
7057 | (tp->bios_version_str[1] << 8);
7058
56b6aeb0
HMH		 7059 /*
7060 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7061 * X32 or newer, all Z series; Some models must have an
7062 * up-to-date BIOS or they will not be detected.
7063 *
7064 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7065 */
7066 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
7067 if (sscanf(dev->name,
7068 "IBM ThinkPad Embedded Controller -[%17c",
7069 ec_fw_string) == 1) {
7070 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
7071 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 7072
7073 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 7074 if (!tp->ec_version_str)
7075 return -ENOMEM;
d5a2f2f1
HMH		 7076 tp->ec_model = ec_fw_string[0]
7077 | (ec_fw_string[1] << 8);
7078 break;
78f81cc4 7079 }
1da177e4 7080 }
d5a2f2f1 7081
bf20e740
HMH		 7082 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
7083 if (s && !strnicmp(s, "ThinkPad", 8)) {
7084 tp->model_str = kstrdup(s, GFP_KERNEL);
7085 if (!tp->model_str)
7086 return -ENOMEM;
d5a2f2f1 7087 }
8c74adbc 7088
bf20e740
HMH		 7089 s = dmi_get_system_info(DMI_PRODUCT_NAME);
7090 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
7091 if (s && !tp->nummodel_str)
7092 return -ENOMEM;
7093
7094 return 0;
1da177e4
LT		 7095}
7096
5fba344c
HMH		 7097static int __init probe_for_thinkpad(void)
7098{
7099 int is_thinkpad;
7100
7101 if (acpi_disabled)
7102 return -ENODEV;
7103
7104 /*
7105 * Non-ancient models have better DMI tagging, but very old models
7106 * don't.
7107 */
d5a2f2f1 7108 is_thinkpad = (thinkpad_id.model_str != NULL);
5fba344c
HMH		 7109
7110 /* ec is required because many other handles are relative to it */
e0c7dfe7 7111 TPACPI_ACPIHANDLE_INIT(ec);
5fba344c
HMH		 7112 if (!ec_handle) {
7113 if (is_thinkpad)
e0c7dfe7 7114 printk(TPACPI_ERR
5fba344c
HMH		 7115 "Not yet supported ThinkPad detected!\n");
7116 return -ENODEV;
7117 }
7118
0dcef77c
HMH		 7119 /*
7120 * Risks a regression on very old machines, but reduces potential
7121 * false positives a damn great deal
7122 */
7123 if (!is_thinkpad)
d5a2f2f1 7124 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
0dcef77c
HMH		 7125
7126 if (!is_thinkpad && !force_load)
7127 return -ENODEV;
7128
5fba344c
HMH		 7129 return 0;
7130}
7131
7132
56b6aeb0 7133/* Module init, exit, parameters */
1da177e4 7134
a5763f22
HMH		 7135static struct ibm_init_struct ibms_init[] __initdata = {
7136 {
7137 .init = thinkpad_acpi_driver_init,
7138 .data = &thinkpad_acpi_driver_data,
7139 },
7140 {
7141 .init = hotkey_init,
7142 .data = &hotkey_driver_data,
7143 },
7144 {
7145 .init = bluetooth_init,
7146 .data = &bluetooth_driver_data,
7147 },
7148 {
7149 .init = wan_init,
7150 .data = &wan_driver_data,
7151 },
0045c0aa
HMH		 7152 {
7153 .init = uwb_init,
7154 .data = &uwb_driver_data,
7155 },
d7c1d17d 7156#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 7157 {
7158 .init = video_init,
7159 .data = &video_driver_data,
7160 },
d7c1d17d 7161#endif
a5763f22
HMH		 7162 {
7163 .init = light_init,
7164 .data = &light_driver_data,
7165 },
7166#ifdef CONFIG_THINKPAD_ACPI_DOCK
7167 {
7168 .init = dock_init,
7169 .data = &dock_driver_data[0],
7170 },
7171 {
d94a7f16 7172 .init = dock_init2,
a5763f22
HMH		 7173 .data = &dock_driver_data[1],
7174 },
7175#endif
7176#ifdef CONFIG_THINKPAD_ACPI_BAY
7177 {
7178 .init = bay_init,
7179 .data = &bay_driver_data,
7180 },
7181#endif
7182 {
7183 .init = cmos_init,
7184 .data = &cmos_driver_data,
7185 },
7186 {
7187 .init = led_init,
7188 .data = &led_driver_data,
7189 },
7190 {
7191 .init = beep_init,
7192 .data = &beep_driver_data,
7193 },
7194 {
7195 .init = thermal_init,
7196 .data = &thermal_driver_data,
7197 },
7198 {
7199 .data = &ecdump_driver_data,
7200 },
7201 {
7202 .init = brightness_init,
7203 .data = &brightness_driver_data,
7204 },
7205 {
7206 .data = &volume_driver_data,
7207 },
7208 {
7209 .init = fan_init,
7210 .data = &fan_driver_data,
7211 },
7212};
7213
3945ac36 7214static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 7215{
7216 unsigned int i;
a5763f22 7217 struct ibm_struct *ibm;
1da177e4 7218
59f91ff1
HMH		 7219 if (!kp || !kp->name || !val)
7220 return -EINVAL;
7221
a5763f22
HMH		 7222 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7223 ibm = ibms_init[i].data;
59f91ff1
HMH		 7224 WARN_ON(ibm == NULL);
7225
7226 if (!ibm || !ibm->name)
7227 continue;
a5763f22
HMH		 7228
7229 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
7230 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 7231 return -ENOSPC;
a5763f22
HMH		 7232 strcpy(ibms_init[i].param, val);
7233 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 7234 return 0;
7235 }
a5763f22 7236 }
1da177e4 7237
1da177e4
LT		 7238 return -EINVAL;
7239}
7240
56b6aeb0 7241module_param(experimental, int, 0);
f68080f8 7242MODULE_PARM_DESC(experimental,
35ff8b9f 7243 "Enables experimental features when non-zero");
56b6aeb0 7244
132ce091 7245module_param_named(debug, dbg_level, uint, 0);
f68080f8 7246MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 7247
86cc9445 7248module_param(force_load, bool, 0);
f68080f8 7249MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 7250 "Attempts to load the driver even on a "
7251 "mis-identified ThinkPad when true");
0dcef77c 7252
86cc9445 7253module_param_named(fan_control, fan_control_allowed, bool, 0);
f68080f8 7254MODULE_PARM_DESC(fan_control,
35ff8b9f 7255 "Enables setting fan parameters features when true");
ecf2a80a 7256
24d3b774 7257module_param_named(brightness_mode, brightness_mode, int, 0);
f68080f8 7258MODULE_PARM_DESC(brightness_mode,
35ff8b9f
HMH		 7259 "Selects brightness control strategy: "
7260 "0=auto, 1=EC, 2=CMOS, 3=both");
24d3b774 7261
87cc537a 7262module_param(brightness_enable, uint, 0);
f68080f8 7263MODULE_PARM_DESC(brightness_enable,
35ff8b9f 7264 "Enables backlight control when 1, disables when 0");
87cc537a 7265
ff80f137 7266module_param(hotkey_report_mode, uint, 0);
f68080f8 7267MODULE_PARM_DESC(hotkey_report_mode,
35ff8b9f
HMH		 7268 "used for backwards compatibility with userspace, "
7269 "see documentation");
ff80f137 7270
e0c7dfe7 7271#define TPACPI_PARAM(feature) \
f68080f8 7272 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 7273 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 7274 "at module load, see documentation")
1da177e4 7275
e0c7dfe7
HMH		 7276TPACPI_PARAM(hotkey);
7277TPACPI_PARAM(bluetooth);
7278TPACPI_PARAM(video);
7279TPACPI_PARAM(light);
85998248 7280#ifdef CONFIG_THINKPAD_ACPI_DOCK
e0c7dfe7 7281TPACPI_PARAM(dock);
63e5f248 7282#endif
85998248 7283#ifdef CONFIG_THINKPAD_ACPI_BAY
e0c7dfe7 7284TPACPI_PARAM(bay);
85998248 7285#endif /* CONFIG_THINKPAD_ACPI_BAY */
e0c7dfe7
HMH		 7286TPACPI_PARAM(cmos);
7287TPACPI_PARAM(led);
7288TPACPI_PARAM(beep);
7289TPACPI_PARAM(ecdump);
7290TPACPI_PARAM(brightness);
7291TPACPI_PARAM(volume);
7292TPACPI_PARAM(fan);
78f81cc4 7293
a73f3091
HMH		 7294#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7295module_param(dbg_wlswemul, uint, 0);
7296MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
7297module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
7298MODULE_PARM_DESC(wlsw_state,
7299 "Initial state of the emulated WLSW switch");
7300
7301module_param(dbg_bluetoothemul, uint, 0);
7302MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
7303module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
7304MODULE_PARM_DESC(bluetooth_state,
7305 "Initial state of the emulated bluetooth switch");
7306
7307module_param(dbg_wwanemul, uint, 0);
7308MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
7309module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
7310MODULE_PARM_DESC(wwan_state,
7311 "Initial state of the emulated WWAN switch");
0045c0aa
HMH		 7312
7313module_param(dbg_uwbemul, uint, 0);
7314MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
7315module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
7316MODULE_PARM_DESC(uwb_state,
7317 "Initial state of the emulated UWB switch");
a73f3091
HMH		 7318#endif
7319
b21a15f6
HMH		 7320static void thinkpad_acpi_module_exit(void)
7321{
7322 struct ibm_struct *ibm, *itmp;
7323
7324 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
7325
7326 list_for_each_entry_safe_reverse(ibm, itmp,
7327 &tpacpi_all_drivers,
7328 all_drivers) {
7329 ibm_exit(ibm);
7330 }
7331
7332 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
7333
7334 if (tpacpi_inputdev) {
7335 if (tp_features.input_device_registered)
7336 input_unregister_device(tpacpi_inputdev);
7337 else
7338 input_free_device(tpacpi_inputdev);
7339 }
7340
7341 if (tpacpi_hwmon)
7342 hwmon_device_unregister(tpacpi_hwmon);
7343
7344 if (tp_features.sensors_pdev_attrs_registered)
7345 device_remove_file(&tpacpi_sensors_pdev->dev,
7346 &dev_attr_thinkpad_acpi_pdev_name);
7347 if (tpacpi_sensors_pdev)
7348 platform_device_unregister(tpacpi_sensors_pdev);
7349 if (tpacpi_pdev)
7350 platform_device_unregister(tpacpi_pdev);
7351
7352 if (tp_features.sensors_pdrv_attrs_registered)
7353 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
7354 if (tp_features.platform_drv_attrs_registered)
7355 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
7356
7357 if (tp_features.sensors_pdrv_registered)
7358 platform_driver_unregister(&tpacpi_hwmon_pdriver);
7359
7360 if (tp_features.platform_drv_registered)
7361 platform_driver_unregister(&tpacpi_pdriver);
7362
7363 if (proc_dir)
e0c7dfe7 7364 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 7365
e0e3c061
HMH		 7366 if (tpacpi_wq)
7367 destroy_workqueue(tpacpi_wq);
7368
b21a15f6
HMH		 7369 kfree(thinkpad_id.bios_version_str);
7370 kfree(thinkpad_id.ec_version_str);
7371 kfree(thinkpad_id.model_str);
7372}
7373
f74a27d4 7374
1def7115 7375static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 7376{
7377 int ret, i;
7378
8fef502e
HMH		 7379 tpacpi_lifecycle = TPACPI_LIFE_INIT;
7380
ff80f137
HMH		 7381 /* Parameter checking */
7382 if (hotkey_report_mode > 2)
7383 return -EINVAL;
7384
54ae1501 7385 /* Driver-level probe */
d5a2f2f1 7386
bf20e740
HMH		 7387 ret = get_thinkpad_model_data(&thinkpad_id);
7388 if (ret) {
7389 printk(TPACPI_ERR
7390 "unable to get DMI data: %d\n", ret);
7391 thinkpad_acpi_module_exit();
7392 return ret;
7393 }
5fba344c 7394 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 7395 if (ret) {
7396 thinkpad_acpi_module_exit();
5fba344c 7397 return ret;
d5a2f2f1 7398 }
1da177e4 7399
54ae1501 7400 /* Driver initialization */
d5a2f2f1 7401
e0c7dfe7
HMH		 7402 TPACPI_ACPIHANDLE_INIT(ecrd);
7403 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 7404
e0e3c061
HMH		 7405 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
7406 if (!tpacpi_wq) {
7407 thinkpad_acpi_module_exit();
7408 return -ENOMEM;
7409 }
7410
e0c7dfe7 7411 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 7412 if (!proc_dir) {
35ff8b9f
HMH		 7413 printk(TPACPI_ERR
7414 "unable to create proc dir " TPACPI_PROC_DIR);
1def7115 7415 thinkpad_acpi_module_exit();
1da177e4
LT		 7416 return -ENODEV;
7417 }
7418 proc_dir->owner = THIS_MODULE;
78f81cc4 7419
54ae1501
HMH		 7420 ret = platform_driver_register(&tpacpi_pdriver);
7421 if (ret) {
35ff8b9f
HMH		 7422 printk(TPACPI_ERR
7423 "unable to register main platform driver\n");
54ae1501
HMH		 7424 thinkpad_acpi_module_exit();
7425 return ret;
7426 }
ac36393d
HMH		 7427 tp_features.platform_drv_registered = 1;
7428
7fd40029
HMH		 7429 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
7430 if (ret) {
35ff8b9f
HMH		 7431 printk(TPACPI_ERR
7432 "unable to register hwmon platform driver\n");
7fd40029
HMH		 7433 thinkpad_acpi_module_exit();
7434 return ret;
7435 }
7436 tp_features.sensors_pdrv_registered = 1;
7437
176750d6 7438 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 7439 if (!ret) {
7440 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 7441 ret = tpacpi_create_driver_attributes(
7442 &tpacpi_hwmon_pdriver.driver);
2369cc94 7443 }
176750d6 7444 if (ret) {
35ff8b9f
HMH		 7445 printk(TPACPI_ERR
7446 "unable to create sysfs driver attributes\n");
176750d6
HMH		 7447 thinkpad_acpi_module_exit();
7448 return ret;
7449 }
2369cc94 7450 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 7451
54ae1501
HMH		 7452
7453 /* Device initialization */
e0c7dfe7 7454 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 7455 NULL, 0);
7456 if (IS_ERR(tpacpi_pdev)) {
7457 ret = PTR_ERR(tpacpi_pdev);
7458 tpacpi_pdev = NULL;
e0c7dfe7 7459 printk(TPACPI_ERR "unable to register platform device\n");
54ae1501
HMH		 7460 thinkpad_acpi_module_exit();
7461 return ret;
7462 }
7fd40029 7463 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 7464 TPACPI_HWMON_DRVR_NAME,
7465 -1, NULL, 0);
7fd40029
HMH		 7466 if (IS_ERR(tpacpi_sensors_pdev)) {
7467 ret = PTR_ERR(tpacpi_sensors_pdev);
7468 tpacpi_sensors_pdev = NULL;
35ff8b9f
HMH		 7469 printk(TPACPI_ERR
7470 "unable to register hwmon platform device\n");
7fd40029
HMH		 7471 thinkpad_acpi_module_exit();
7472 return ret;
7473 }
7474 ret = device_create_file(&tpacpi_sensors_pdev->dev,
7475 &dev_attr_thinkpad_acpi_pdev_name);
7476 if (ret) {
e0c7dfe7 7477 printk(TPACPI_ERR
35ff8b9f 7478 "unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 7479 thinkpad_acpi_module_exit();
7480 return ret;
7481 }
7482 tp_features.sensors_pdev_attrs_registered = 1;
7483 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 7484 if (IS_ERR(tpacpi_hwmon)) {
7485 ret = PTR_ERR(tpacpi_hwmon);
7486 tpacpi_hwmon = NULL;
e0c7dfe7 7487 printk(TPACPI_ERR "unable to register hwmon device\n");
54ae1501
HMH		 7488 thinkpad_acpi_module_exit();
7489 return ret;
7490 }
8523ed6f 7491 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 7492 tpacpi_inputdev = input_allocate_device();
7493 if (!tpacpi_inputdev) {
e0c7dfe7 7494 printk(TPACPI_ERR "unable to allocate input device\n");
7f5d1cd6
HMH		 7495 thinkpad_acpi_module_exit();
7496 return -ENOMEM;
7497 } else {
7498 /* Prepare input device, but don't register */
7499 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 7500 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 7501 tpacpi_inputdev->id.bustype = BUS_HOST;
edf0e0e5
HMH		 7502 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
7503 thinkpad_id.vendor :
7504 PCI_VENDOR_ID_IBM;
7f5d1cd6
HMH		 7505 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
7506 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
7507 }
a5763f22
HMH		 7508 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7509 ret = ibm_init(&ibms_init[i]);
7510 if (ret >= 0 && *ibms_init[i].param)
7511 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 7512 if (ret < 0) {
1def7115 7513 thinkpad_acpi_module_exit();
1da177e4
LT		 7514 return ret;
7515 }
7516 }
7f5d1cd6
HMH		 7517 ret = input_register_device(tpacpi_inputdev);
7518 if (ret < 0) {
e0c7dfe7 7519 printk(TPACPI_ERR "unable to register input device\n");
7f5d1cd6
HMH		 7520 thinkpad_acpi_module_exit();
7521 return ret;
7522 } else {
7523 tp_features.input_device_registered = 1;
7524 }
1da177e4 7525
8fef502e 7526 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
1da177e4
LT		 7527 return 0;
7528}
7529
95e57ab2
HMH		 7530MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
7531
f68080f8
HMH		 7532/*
7533 * DMI matching for module autoloading
7534 *
7535 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7536 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
7537 *
7538 * Only models listed in thinkwiki will be supported, so add yours
7539 * if it is not there yet.
7540 */
7541#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 7542 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8
HMH		 7543
7544/* Non-ancient thinkpads */
7545MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
7546MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
7547
7548/* Ancient thinkpad BIOSes have to be identified by
7549 * BIOS type or model number, and there are far less
7550 * BIOS types than model numbers... */
b36a50f9
MCS		 7551IBM_BIOS_MODULE_ALIAS("I[BDHIMNOTWVYZ]");
7552IBM_BIOS_MODULE_ALIAS("1[0368A-GIKM-PST]");
7553IBM_BIOS_MODULE_ALIAS("K[UX-Z]");
f68080f8
HMH		 7554
7555MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
e0c7dfe7
HMH		 7556MODULE_DESCRIPTION(TPACPI_DESC);
7557MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 7558MODULE_LICENSE("GPL");
7559
1def7115
HMH		 7560module_init(thinkpad_acpi_module_init);
7561module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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