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toshiba_acpi: Fix whitespace
[deliverable/linux.git] / drivers / platform / x86 / thinkpad_acpi.c
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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
0978e012
JP		 24#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25
420f9739 26#define TPACPI_VERSION "0.25"
a112ceee 27#define TPACPI_SYSFS_VERSION 0x020700
78f81cc4
BD		 28
29/*
1da177e4 30 * Changelog:
4b45cc07
HMH		 31 * 2007-10-20 changelog trimmed down
32 *
643f12db
HMH		 33 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
34 * drivers/misc.
f9ff43a6
HMH		 35 *
36 * 2006-11-22 0.13 new maintainer
37 * changelog now lives in git commit history, and will
38 * not be updated further in-file.
837ca6dd 39 *
78f81cc4
BD		 40 * 2005-03-17 0.11 support for 600e, 770x
41 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
4b45cc07
HMH		 42 *
43 * 2005-01-16 0.9 use MODULE_VERSION
78f81cc4
BD		 44 * thanks to Henrik Brix Andersen <brix@gentoo.org>
45 * fix parameter passing on module loading
46 * thanks to Rusty Russell <rusty@rustcorp.com.au>
47 * thanks to Jim Radford <radford@blackbean.org>
48 * 2004-11-08 0.8 fix init error case, don't return from a macro
49 * thanks to Chris Wright <chrisw@osdl.org>
1da177e4
LT		 50 */
51
0c78039f
HMH		 52#include <linux/kernel.h>
53#include <linux/module.h>
54#include <linux/init.h>
55#include <linux/types.h>
56#include <linux/string.h>
57#include <linux/list.h>
58#include <linux/mutex.h>
73a94d86 59#include <linux/sched.h>
0c78039f
HMH		 60#include <linux/kthread.h>
61#include <linux/freezer.h>
62#include <linux/delay.h>
5a0e3ad6 63#include <linux/slab.h>
0c78039f
HMH		 64#include <linux/nvram.h>
65#include <linux/proc_fs.h>
887965e6 66#include <linux/seq_file.h>
0c78039f
HMH		 67#include <linux/sysfs.h>
68#include <linux/backlight.h>
69#include <linux/fb.h>
70#include <linux/platform_device.h>
71#include <linux/hwmon.h>
72#include <linux/hwmon-sysfs.h>
73#include <linux/input.h>
4fa6811b 74#include <linux/leds.h>
0e74dc26 75#include <linux/rfkill.h>
0c78039f
HMH		 76#include <linux/dmi.h>
77#include <linux/jiffies.h>
78#include <linux/workqueue.h>
8b48463f
LZ		 79#include <linux/acpi.h>
80#include <linux/pci_ids.h>
81#include <linux/thinkpad_acpi.h>
0d204c34
HMH		 82#include <sound/core.h>
83#include <sound/control.h>
84#include <sound/initval.h>
8b48463f 85#include <asm/uaccess.h>
0c78039f
HMH		 86
87/* ThinkPad CMOS commands */
88#define TP_CMOS_VOLUME_DOWN 0
89#define TP_CMOS_VOLUME_UP 1
90#define TP_CMOS_VOLUME_MUTE 2
91#define TP_CMOS_BRIGHTNESS_UP 4
92#define TP_CMOS_BRIGHTNESS_DOWN 5
4fa6811b
HMH		 93#define TP_CMOS_THINKLIGHT_ON 12
94#define TP_CMOS_THINKLIGHT_OFF 13
0c78039f
HMH		 95
96/* NVRAM Addresses */
97enum tp_nvram_addr {
98 TP_NVRAM_ADDR_HK2 = 0x57,
99 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
100 TP_NVRAM_ADDR_VIDEO = 0x59,
101 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
102 TP_NVRAM_ADDR_MIXER = 0x60,
103};
104
105/* NVRAM bit masks */
106enum {
107 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
108 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
109 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
110 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
111 TP_NVRAM_MASK_THINKLIGHT = 0x10,
112 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
113 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
114 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
115 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
116 TP_NVRAM_MASK_MUTE = 0x40,
117 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
118 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
119 TP_NVRAM_POS_LEVEL_VOLUME = 0,
120};
121
5d756db9
HMH		 122/* Misc NVRAM-related */
123enum {
124 TP_NVRAM_LEVEL_VOLUME_MAX = 14,
125};
126
b21a15f6 127/* ACPI HIDs */
9fbdaeb4
MI		 128#define TPACPI_ACPI_IBM_HKEY_HID "IBM0068"
129#define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068"
437e470c 130#define TPACPI_ACPI_EC_HID "PNP0C09"
b21a15f6
HMH		 131
132/* Input IDs */
133#define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
134#define TPACPI_HKEY_INPUT_VERSION 0x4101
135
153f8220
HMH		 136/* ACPI \WGSV commands */
137enum {
138 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
139 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
140 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
141 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
142};
143
144/* TP_ACPI_WGSV_GET_STATE bits */
145enum {
146 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
147 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
148 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
149 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
150 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
151 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
152 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
153 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
154 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
155 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
156};
b21a15f6 157
67bcae6e
HMH		 158/* HKEY events */
159enum tpacpi_hkey_event_t {
160 /* Hotkey-related */
161 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */
162 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
163 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
164 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
165 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
166 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
167
168 /* Reasons for waking up from S3/S4 */
169 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
170 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
171 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
172 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
173 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
174 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
175
176 /* Auto-sleep after eject request */
177 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
178 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
179
180 /* Misc bay events */
181 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
a50245af
HMH		 182 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock
183 or port replicator */
184 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
185 dock or port replicator */
67bcae6e
HMH		 186
187 /* User-interface events */
188 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
189 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
190 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
191 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
192 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
193 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
194 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
195
2d43f671
HMH		 196 /* Key-related user-interface events */
197 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */
198 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */
199
67bcae6e
HMH		 200 /* Thermal events */
201 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
202 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
203 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
204 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
205 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */
206
6f62bc3e
RH		 207 /* AC-related events */
208 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */
2d43f671 209
67bcae6e
HMH		 210 /* Misc */
211 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
212};
213
b21a15f6
HMH		 214/****************************************************************************
215 * Main driver
216 */
217
e0c7dfe7
HMH		 218#define TPACPI_NAME "thinkpad"
219#define TPACPI_DESC "ThinkPad ACPI Extras"
220#define TPACPI_FILE TPACPI_NAME "_acpi"
221#define TPACPI_URL "http://ibm-acpi.sf.net/"
222#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 223
e0c7dfe7
HMH		 224#define TPACPI_PROC_DIR "ibm"
225#define TPACPI_ACPI_EVENT_PREFIX "ibm"
226#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 227#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 228#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 229
95e57ab2 230#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 231#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 232
e0c7dfe7 233#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 234
7ff8d62f 235/* Debugging printk groups */
0c78039f 236#define TPACPI_DBG_ALL 0xffff
73a94d86 237#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 238#define TPACPI_DBG_INIT 0x0001
239#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 240#define TPACPI_DBG_RFKILL 0x0004
56e2c200 241#define TPACPI_DBG_HKEY 0x0008
74a60c0f 242#define TPACPI_DBG_FAN 0x0010
0e501834 243#define TPACPI_DBG_BRGHT 0x0020
329e4e18 244#define TPACPI_DBG_MIXER 0x0040
0c78039f 245
35ff8b9f
HMH		 246#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
247#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
248#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 249
0c78039f
HMH		 250
251/****************************************************************************
b21a15f6 252 * Driver-wide structs and misc. variables
0c78039f
HMH		 253 */
254
255struct ibm_struct;
256
257struct tp_acpi_drv_struct {
258 const struct acpi_device_id *hid;
259 struct acpi_driver *driver;
260
261 void (*notify) (struct ibm_struct *, u32);
262 acpi_handle *handle;
263 u32 type;
264 struct acpi_device *device;
265};
266
267struct ibm_struct {
268 char *name;
269
887965e6 270 int (*read) (struct seq_file *);
0c78039f
HMH		 271 int (*write) (char *);
272 void (*exit) (void);
273 void (*resume) (void);
fd3c3a42 274 void (*suspend) (void);
90d9d3c7 275 void (*shutdown) (void);
0c78039f
HMH		 276
277 struct list_head all_drivers;
278
279 struct tp_acpi_drv_struct *acpi;
280
281 struct {
282 u8 acpi_driver_registered:1;
283 u8 acpi_notify_installed:1;
284 u8 proc_created:1;
285 u8 init_called:1;
286 u8 experimental:1;
287 } flags;
288};
289
290struct ibm_init_struct {
291 char param[32];
292
293 int (*init) (struct ibm_init_struct *);
d161a13f 294 umode_t base_procfs_mode;
0c78039f
HMH		 295 struct ibm_struct *data;
296};
297
298static struct {
0c78039f
HMH		 299 u32 bluetooth:1;
300 u32 hotkey:1;
301 u32 hotkey_mask:1;
302 u32 hotkey_wlsw:1;
6c231bd5 303 u32 hotkey_tablet:1;
0c78039f
HMH		 304 u32 light:1;
305 u32 light_status:1;
b5972796 306 u32 bright_acpimode:1;
77775838 307 u32 bright_unkfw:1;
0c78039f 308 u32 wan:1;
0045c0aa 309 u32 uwb:1;
0c78039f 310 u32 fan_ctrl_status_undef:1;
d7377247 311 u32 second_fan:1;
60201732 312 u32 beep_needs_two_args:1;
a112ceee 313 u32 mixer_no_level_control:1;
0c78039f
HMH		 314 u32 input_device_registered:1;
315 u32 platform_drv_registered:1;
316 u32 platform_drv_attrs_registered:1;
317 u32 sensors_pdrv_registered:1;
318 u32 sensors_pdrv_attrs_registered:1;
319 u32 sensors_pdev_attrs_registered:1;
320 u32 hotkey_poll_active:1;
321} tp_features;
322
92889022
HMH		 323static struct {
324 u16 hotkey_mask_ff:1;
c7ac6291 325 u16 volume_ctrl_forbidden:1;
92889022
HMH		 326} tp_warned;
327
0c78039f
HMH		 328struct thinkpad_id_data {
329 unsigned int vendor; /* ThinkPad vendor:
330 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
331
332 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
333 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
334
050df107 335 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
0c78039f 336 u16 ec_model;
050df107
HMH		 337 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
338 u16 ec_release;
0c78039f 339
8c74adbc
HMH		 340 char *model_str; /* ThinkPad T43 */
341 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 342};
0c78039f
HMH		 343static struct thinkpad_id_data thinkpad_id;
344
8fef502e
HMH		 345static enum {
346 TPACPI_LIFE_INIT = 0,
347 TPACPI_LIFE_RUNNING,
348 TPACPI_LIFE_EXITING,
349} tpacpi_lifecycle;
350
b21a15f6
HMH		 351static int experimental;
352static u32 dbg_level;
353
e0e3c061
HMH		 354static struct workqueue_struct *tpacpi_wq;
355
75bd3bf2
HMH		 356enum led_status_t {
357 TPACPI_LED_OFF = 0,
358 TPACPI_LED_ON,
359 TPACPI_LED_BLINK,
360};
361
4fa6811b
HMH		 362/* Special LED class that can defer work */
363struct tpacpi_led_classdev {
364 struct led_classdev led_classdev;
365 struct work_struct work;
75bd3bf2 366 enum led_status_t new_state;
edf2d778 367 int led;
4fa6811b
HMH		 368};
369
77775838
HMH		 370/* brightness level capabilities */
371static unsigned int bright_maxlvl; /* 0 = unknown */
372
a73f3091
HMH		 373#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
374static int dbg_wlswemul;
90ab5ee9 375static bool tpacpi_wlsw_emulstate;
a73f3091 376static int dbg_bluetoothemul;
90ab5ee9 377static bool tpacpi_bluetooth_emulstate;
a73f3091 378static int dbg_wwanemul;
90ab5ee9 379static bool tpacpi_wwan_emulstate;
0045c0aa 380static int dbg_uwbemul;
90ab5ee9 381static bool tpacpi_uwb_emulstate;
a73f3091
HMH		 382#endif
383
384
3dcc2c3b
HMH		 385/*************************************************************************
386 * Debugging helpers
387 */
388
0978e012
JP		 389#define dbg_printk(a_dbg_level, format, arg...) \
390do { \
391 if (dbg_level & (a_dbg_level)) \
392 printk(KERN_DEBUG pr_fmt("%s: " format), \
393 __func__, ##arg); \
394} while (0)
3dcc2c3b
HMH		 395
396#ifdef CONFIG_THINKPAD_ACPI_DEBUG
397#define vdbg_printk dbg_printk
398static const char *str_supported(int is_supported);
399#else
0978e012
JP		 400static inline const char *str_supported(int is_supported) { return ""; }
401#define vdbg_printk(a_dbg_level, format, arg...) \
402 no_printk(format, ##arg)
3dcc2c3b
HMH		 403#endif
404
73a94d86
HMH		 405static void tpacpi_log_usertask(const char * const what)
406{
0978e012
JP		 407 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
408 what, task_tgid_vnr(current));
73a94d86
HMH		 409}
410
0978e012
JP		 411#define tpacpi_disclose_usertask(what, format, arg...) \
412do { \
413 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
414 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
415 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
416 what, task_tgid_vnr(current), ## arg); \
417 } \
418} while (0)
3dcc2c3b 419
7d95a3d5
HMH		 420/*
421 * Quirk handling helpers
422 *
423 * ThinkPad IDs and versions seen in the field so far
424 * are two-characters from the set [0-9A-Z], i.e. base 36.
425 *
426 * We use values well outside that range as specials.
427 */
428
429#define TPACPI_MATCH_ANY 0xffffU
430#define TPACPI_MATCH_UNKNOWN 0U
431
432/* TPID('1', 'Y') == 0x5931 */
433#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
434
435#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
436 { .vendor = PCI_VENDOR_ID_IBM, \
437 .bios = TPID(__id1, __id2), \
438 .ec = TPACPI_MATCH_ANY, \
439 .quirks = (__quirk) }
440
441#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
442 { .vendor = PCI_VENDOR_ID_LENOVO, \
443 .bios = TPID(__id1, __id2), \
444 .ec = TPACPI_MATCH_ANY, \
445 .quirks = (__quirk) }
446
a112ceee
HMH		 447#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
448 { .vendor = PCI_VENDOR_ID_LENOVO, \
449 .bios = TPACPI_MATCH_ANY, \
450 .ec = TPID(__id1, __id2), \
451 .quirks = (__quirk) }
452
7d95a3d5
HMH		 453struct tpacpi_quirk {
454 unsigned int vendor;
455 u16 bios;
456 u16 ec;
457 unsigned long quirks;
458};
459
460/**
461 * tpacpi_check_quirks() - search BIOS/EC version on a list
462 * @qlist: array of &struct tpacpi_quirk
463 * @qlist_size: number of elements in @qlist
464 *
465 * Iterates over a quirks list until one is found that matches the
466 * ThinkPad's vendor, BIOS and EC model.
467 *
468 * Returns 0 if nothing matches, otherwise returns the quirks field of
469 * the matching &struct tpacpi_quirk entry.
470 *
471 * The match criteria is: vendor, ec and bios much match.
472 */
473static unsigned long __init tpacpi_check_quirks(
474 const struct tpacpi_quirk *qlist,
475 unsigned int qlist_size)
476{
477 while (qlist_size) {
478 if ((qlist->vendor == thinkpad_id.vendor ||
479 qlist->vendor == TPACPI_MATCH_ANY) &&
480 (qlist->bios == thinkpad_id.bios_model ||
481 qlist->bios == TPACPI_MATCH_ANY) &&
482 (qlist->ec == thinkpad_id.ec_model ||
483 qlist->ec == TPACPI_MATCH_ANY))
484 return qlist->quirks;
485
486 qlist_size--;
487 qlist++;
488 }
489 return 0;
490}
491
e28393c0
HMH		 492static inline bool __pure __init tpacpi_is_lenovo(void)
493{
494 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
495}
496
497static inline bool __pure __init tpacpi_is_ibm(void)
498{
499 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
500}
7d95a3d5 501
56b6aeb0
HMH		 502/****************************************************************************
503 ****************************************************************************
504 *
505 * ACPI Helpers and device model
506 *
507 ****************************************************************************
508 ****************************************************************************/
509
510/*************************************************************************
511 * ACPI basic handles
512 */
1da177e4 513
94954cc6 514static acpi_handle root_handle;
437e470c 515static acpi_handle ec_handle;
1da177e4 516
e0c7dfe7 517#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4 518 static acpi_handle object##_handle; \
3bd01896 519 static const acpi_handle * const object##_parent __initconst = \
ef07a5ab
HMH		 520 &parent##_handle; \
521 static char *object##_paths[] __initdata = { paths }
1da177e4 522
e0c7dfe7
HMH		 523TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
524TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 525
35ff8b9f
HMH		 526TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
527 /* T4x, X31, X40 */
78f81cc4
BD		 528 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
529 "\\CMS", /* R40, R40e */
56b6aeb0 530 ); /* all others */
78f81cc4 531
e0c7dfe7 532TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 533 "^HKEY", /* R30, R31 */
534 "HKEY", /* all others */
56b6aeb0 535 ); /* 570 */
78f81cc4 536
56b6aeb0
HMH		 537/*************************************************************************
538 * ACPI helpers
a8b7a662
HMH		 539 */
540
1da177e4 541static int acpi_evalf(acpi_handle handle,
eceeb437 542 int *res, char *method, char *fmt, ...)
1da177e4
LT		 543{
544 char *fmt0 = fmt;
78f81cc4 545 struct acpi_object_list params;
e0c7dfe7 546 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 547 struct acpi_buffer result, *resultp;
548 union acpi_object out_obj;
549 acpi_status status;
550 va_list ap;
551 char res_type;
552 int success;
553 int quiet;
1da177e4
LT		 554
555 if (!*fmt) {
0978e012 556 pr_err("acpi_evalf() called with empty format\n");
1da177e4
LT		 557 return 0;
558 }
559
560 if (*fmt == 'q') {
561 quiet = 1;
562 fmt++;
563 } else
564 quiet = 0;
565
566 res_type = *(fmt++);
567
568 params.count = 0;
569 params.pointer = &in_objs[0];
570
571 va_start(ap, fmt);
572 while (*fmt) {
573 char c = *(fmt++);
574 switch (c) {
575 case 'd': /* int */
576 in_objs[params.count].integer.value = va_arg(ap, int);
577 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
578 break;
78f81cc4 579 /* add more types as needed */
1da177e4 580 default:
0978e012 581 pr_err("acpi_evalf() called "
1da177e4 582 "with invalid format character '%c'\n", c);
21365851 583 va_end(ap);
1da177e4
LT		 584 return 0;
585 }
586 }
587 va_end(ap);
588
78f81cc4
BD		 589 if (res_type != 'v') {
590 result.length = sizeof(out_obj);
591 result.pointer = &out_obj;
592 resultp = &result;
593 } else
594 resultp = NULL;
1da177e4 595
78f81cc4 596 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 597
598 switch (res_type) {
78f81cc4 599 case 'd': /* int */
263f4a30
HMH		 600 success = (status == AE_OK &&
601 out_obj.type == ACPI_TYPE_INTEGER);
602 if (success && res)
eceeb437 603 *res = out_obj.integer.value;
1da177e4 604 break;
78f81cc4 605 case 'v': /* void */
1da177e4
LT		 606 success = status == AE_OK;
607 break;
78f81cc4 608 /* add more types as needed */
1da177e4 609 default:
0978e012 610 pr_err("acpi_evalf() called "
1da177e4
LT		 611 "with invalid format character '%c'\n", res_type);
612 return 0;
613 }
614
56b6aeb0 615 if (!success && !quiet)
0978e012 616 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
263f4a30 617 method, fmt0, acpi_format_exception(status));
56b6aeb0
HMH		 618
619 return success;
620}
621
35ff8b9f 622static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 623{
624 int v;
625
626 if (ecrd_handle) {
627 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
628 return 0;
629 *p = v;
630 } else {
631 if (ec_read(i, p) < 0)
632 return 0;
633 }
634
635 return 1;
636}
637
638static int acpi_ec_write(int i, u8 v)
639{
640 if (ecwr_handle) {
641 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
642 return 0;
643 } else {
644 if (ec_write(i, v) < 0)
645 return 0;
646 }
647
648 return 1;
649}
650
c9bea99c
HMH		 651static int issue_thinkpad_cmos_command(int cmos_cmd)
652{
653 if (!cmos_handle)
654 return -ENXIO;
655
656 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
657 return -EIO;
658
659 return 0;
660}
661
56b6aeb0
HMH		 662/*************************************************************************
663 * ACPI device model
664 */
665
35ff8b9f
HMH		 666#define TPACPI_ACPIHANDLE_INIT(object) \
667 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
ef07a5ab 668 object##_paths, ARRAY_SIZE(object##_paths))
f74a27d4 669
ef07a5ab
HMH		 670static void __init drv_acpi_handle_init(const char *name,
671 acpi_handle *handle, const acpi_handle parent,
672 char **paths, const int num_paths)
56b6aeb0
HMH		 673{
674 int i;
675 acpi_status status;
676
5ae930e6
HMH		 677 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
678 name);
679
56b6aeb0
HMH		 680 for (i = 0; i < num_paths; i++) {
681 status = acpi_get_handle(parent, paths[i], handle);
682 if (ACPI_SUCCESS(status)) {
5ae930e6
HMH		 683 dbg_printk(TPACPI_DBG_INIT,
684 "Found ACPI handle %s for %s\n",
ef07a5ab 685 paths[i], name);
56b6aeb0
HMH		 686 return;
687 }
688 }
689
5ae930e6
HMH		 690 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
691 name);
56b6aeb0
HMH		 692 *handle = NULL;
693}
694
437e470c
HMH		 695static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
696 u32 level, void *context, void **return_value)
697{
46445b6b
AL		 698 struct acpi_device *dev;
699 if (!strcmp(context, "video")) {
700 if (acpi_bus_get_device(handle, &dev))
701 return AE_OK;
702 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
703 return AE_OK;
704 }
705
437e470c
HMH		 706 *(acpi_handle *)return_value = handle;
707
708 return AE_CTRL_TERMINATE;
709}
710
711static void __init tpacpi_acpi_handle_locate(const char *name,
712 const char *hid,
713 acpi_handle *handle)
714{
715 acpi_status status;
716 acpi_handle device_found;
717
46445b6b 718 BUG_ON(!name || !handle);
437e470c
HMH		 719 vdbg_printk(TPACPI_DBG_INIT,
720 "trying to locate ACPI handle for %s, using HID %s\n",
46445b6b 721 name, hid ? hid : "NULL");
437e470c
HMH		 722
723 memset(&device_found, 0, sizeof(device_found));
724 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
725 (void *)name, &device_found);
726
727 *handle = NULL;
728
729 if (ACPI_SUCCESS(status)) {
730 *handle = device_found;
731 dbg_printk(TPACPI_DBG_INIT,
732 "Found ACPI handle for %s\n", name);
733 } else {
734 vdbg_printk(TPACPI_DBG_INIT,
735 "Could not locate an ACPI handle for %s: %s\n",
736 name, acpi_format_exception(status));
737 }
738}
739
8d376cd6 740static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 741{
742 struct ibm_struct *ibm = data;
743
8fef502e
HMH		 744 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
745 return;
746
8d376cd6 747 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 748 return;
749
8d376cd6 750 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 751}
752
8d376cd6 753static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 754{
755 acpi_status status;
5ae930e6 756 int rc;
56b6aeb0 757
8d376cd6
HMH		 758 BUG_ON(!ibm->acpi);
759
760 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 761 return 0;
762
5ae930e6 763 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 764 "setting up ACPI notify for %s\n", ibm->name);
765
5ae930e6
HMH		 766 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
767 if (rc < 0) {
0978e012 768 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc);
56b6aeb0
HMH		 769 return -ENODEV;
770 }
771
db89b4f0 772 ibm->acpi->device->driver_data = ibm;
8d376cd6 773 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 774 TPACPI_ACPI_EVENT_PREFIX,
643f12db 775 ibm->name);
56b6aeb0 776
8d376cd6
HMH		 777 status = acpi_install_notify_handler(*ibm->acpi->handle,
778 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 779 if (ACPI_FAILURE(status)) {
780 if (status == AE_ALREADY_EXISTS) {
0978e012
JP		 781 pr_notice("another device driver is already "
782 "handling %s events\n", ibm->name);
56b6aeb0 783 } else {
0978e012 784 pr_err("acpi_install_notify_handler(%s) failed: %s\n",
72f19921 785 ibm->name, acpi_format_exception(status));
56b6aeb0
HMH		 786 }
787 return -ENODEV;
788 }
8d376cd6 789 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 790 return 0;
791}
792
8d376cd6 793static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 794{
795 return 0;
796}
797
6700121b 798static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 799{
5ae930e6 800 int rc;
56b6aeb0 801
fe08bc4b
HMH		 802 dbg_printk(TPACPI_DBG_INIT,
803 "registering %s as an ACPI driver\n", ibm->name);
804
8d376cd6
HMH		 805 BUG_ON(!ibm->acpi);
806
807 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
808 if (!ibm->acpi->driver) {
0978e012 809 pr_err("failed to allocate memory for ibm->acpi->driver\n");
5fba344c 810 return -ENOMEM;
56b6aeb0
HMH		 811 }
812
e0c7dfe7 813 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 814 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 815
8d376cd6 816 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 817
5ae930e6
HMH		 818 rc = acpi_bus_register_driver(ibm->acpi->driver);
819 if (rc < 0) {
0978e012 820 pr_err("acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 821 ibm->name, rc);
8d376cd6
HMH		 822 kfree(ibm->acpi->driver);
823 ibm->acpi->driver = NULL;
5ae930e6 824 } else if (!rc)
8d376cd6 825 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 826
5ae930e6 827 return rc;
56b6aeb0
HMH		 828}
829
830
831/****************************************************************************
832 ****************************************************************************
833 *
834 * Procfs Helpers
835 *
836 ****************************************************************************
837 ****************************************************************************/
838
887965e6 839static int dispatch_proc_show(struct seq_file *m, void *v)
56b6aeb0 840{
887965e6 841 struct ibm_struct *ibm = m->private;
56b6aeb0
HMH		 842
843 if (!ibm || !ibm->read)
844 return -EINVAL;
887965e6
AD		 845 return ibm->read(m);
846}
56b6aeb0 847
887965e6
AD		 848static int dispatch_proc_open(struct inode *inode, struct file *file)
849{
d9dda78b 850 return single_open(file, dispatch_proc_show, PDE_DATA(inode));
56b6aeb0
HMH		 851}
852
887965e6 853static ssize_t dispatch_proc_write(struct file *file,
35ff8b9f 854 const char __user *userbuf,
887965e6 855 size_t count, loff_t *pos)
56b6aeb0 856{
d9dda78b 857 struct ibm_struct *ibm = PDE_DATA(file_inode(file));
56b6aeb0
HMH		 858 char *kernbuf;
859 int ret;
860
861 if (!ibm || !ibm->write)
862 return -EINVAL;
5b05d469
MB		 863 if (count > PAGE_SIZE - 2)
864 return -EINVAL;
56b6aeb0
HMH		 865
866 kernbuf = kmalloc(count + 2, GFP_KERNEL);
867 if (!kernbuf)
868 return -ENOMEM;
1da177e4 869
56b6aeb0
HMH		 870 if (copy_from_user(kernbuf, userbuf, count)) {
871 kfree(kernbuf);
872 return -EFAULT;
873 }
1da177e4 874
56b6aeb0
HMH		 875 kernbuf[count] = 0;
876 strcat(kernbuf, ",");
877 ret = ibm->write(kernbuf);
878 if (ret == 0)
879 ret = count;
1da177e4 880
56b6aeb0
HMH		 881 kfree(kernbuf);
882
883 return ret;
1da177e4
LT		 884}
885
887965e6
AD		 886static const struct file_operations dispatch_proc_fops = {
887 .owner = THIS_MODULE,
888 .open = dispatch_proc_open,
889 .read = seq_read,
890 .llseek = seq_lseek,
891 .release = single_release,
892 .write = dispatch_proc_write,
893};
894
1da177e4
LT		 895static char *next_cmd(char **cmds)
896{
897 char *start = *cmds;
898 char *end;
899
900 while ((end = strchr(start, ',')) && end == start)
901 start = end + 1;
902
903 if (!end)
904 return NULL;
905
906 *end = 0;
907 *cmds = end + 1;
908 return start;
909}
910
56b6aeb0 911
54ae1501
HMH		 912/****************************************************************************
913 ****************************************************************************
914 *
7f5d1cd6 915 * Device model: input, hwmon and platform
54ae1501
HMH		 916 *
917 ****************************************************************************
918 ****************************************************************************/
919
94954cc6 920static struct platform_device *tpacpi_pdev;
7fd40029 921static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 922static struct device *tpacpi_hwmon;
7f5d1cd6 923static struct input_dev *tpacpi_inputdev;
8523ed6f 924static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 925static LIST_HEAD(tpacpi_all_drivers);
e295e850 926
3567a4e2 927#ifdef CONFIG_PM_SLEEP
4959a781 928static int tpacpi_suspend_handler(struct device *dev)
083f1760
HMH		 929{
930 struct ibm_struct *ibm, *itmp;
931
932 list_for_each_entry_safe(ibm, itmp,
933 &tpacpi_all_drivers,
934 all_drivers) {
935 if (ibm->suspend)
fd3c3a42 936 (ibm->suspend)();
083f1760
HMH		 937 }
938
939 return 0;
940}
941
4959a781 942static int tpacpi_resume_handler(struct device *dev)
e295e850
HMH		 943{
944 struct ibm_struct *ibm, *itmp;
945
946 list_for_each_entry_safe(ibm, itmp,
947 &tpacpi_all_drivers,
948 all_drivers) {
949 if (ibm->resume)
950 (ibm->resume)();
951 }
952
953 return 0;
954}
3567a4e2 955#endif
e295e850 956
4959a781
RW		 957static SIMPLE_DEV_PM_OPS(tpacpi_pm,
958 tpacpi_suspend_handler, tpacpi_resume_handler);
959
90d9d3c7
HMH		 960static void tpacpi_shutdown_handler(struct platform_device *pdev)
961{
962 struct ibm_struct *ibm, *itmp;
963
964 list_for_each_entry_safe(ibm, itmp,
965 &tpacpi_all_drivers,
966 all_drivers) {
967 if (ibm->shutdown)
968 (ibm->shutdown)();
969 }
970}
971
54ae1501
HMH		 972static struct platform_driver tpacpi_pdriver = {
973 .driver = {
e0c7dfe7 974 .name = TPACPI_DRVR_NAME,
54ae1501 975 .owner = THIS_MODULE,
4959a781 976 .pm = &tpacpi_pm,
54ae1501 977 },
90d9d3c7 978 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 979};
980
7fd40029
HMH		 981static struct platform_driver tpacpi_hwmon_pdriver = {
982 .driver = {
e0c7dfe7 983 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 984 .owner = THIS_MODULE,
985 },
986};
54ae1501 987
176750d6 988/*************************************************************************
b21a15f6 989 * sysfs support helpers
176750d6
HMH		 990 */
991
b21a15f6
HMH		 992struct attribute_set {
993 unsigned int members, max_members;
994 struct attribute_group group;
176750d6
HMH		 995};
996
7252374a
HMH		 997struct attribute_set_obj {
998 struct attribute_set s;
999 struct attribute *a;
1000} __attribute__((packed));
1001
1002static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 1003 const char *name)
7252374a
HMH		 1004{
1005 struct attribute_set_obj *sobj;
1006
1007 if (max_members == 0)
1008 return NULL;
1009
1010 /* Allocates space for implicit NULL at the end too */
1011 sobj = kzalloc(sizeof(struct attribute_set_obj) +
1012 max_members * sizeof(struct attribute *),
1013 GFP_KERNEL);
1014 if (!sobj)
1015 return NULL;
1016 sobj->s.max_members = max_members;
1017 sobj->s.group.attrs = &sobj->a;
1018 sobj->s.group.name = name;
1019
1020 return &sobj->s;
1021}
1022
f74a27d4
HMH		 1023#define destroy_attr_set(_set) \
1024 kfree(_set);
1025
7252374a 1026/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 1027static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 1028{
1029 if (!s || !attr)
1030 return -EINVAL;
1031
1032 if (s->members >= s->max_members)
1033 return -ENOMEM;
1034
1035 s->group.attrs[s->members] = attr;
1036 s->members++;
1037
1038 return 0;
1039}
1040
35ff8b9f 1041static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 1042 struct attribute **attr,
1043 unsigned int count)
1044{
1045 int i, res;
1046
1047 for (i = 0; i < count; i++) {
1048 res = add_to_attr_set(s, attr[i]);
1049 if (res)
1050 return res;
1051 }
1052
1053 return 0;
1054}
1055
35ff8b9f 1056static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 1057{
1058 sysfs_remove_group(kobj, &s->group);
1059 destroy_attr_set(s);
1060}
1061
f74a27d4
HMH		 1062#define register_attr_set_with_sysfs(_attr_set, _kobj) \
1063 sysfs_create_group(_kobj, &_attr_set->group)
1064
7252374a
HMH		 1065static int parse_strtoul(const char *buf,
1066 unsigned long max, unsigned long *value)
1067{
1068 char *endp;
1069
e7d2860b
AGR		 1070 *value = simple_strtoul(skip_spaces(buf), &endp, 0);
1071 endp = skip_spaces(endp);
7252374a
HMH		 1072 if (*endp || *value > max)
1073 return -EINVAL;
1074
1075 return 0;
1076}
1077
d64c81c4
HMH		 1078static void tpacpi_disable_brightness_delay(void)
1079{
1080 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
0978e012 1081 pr_notice("ACPI backlight control delay disabled\n");
d64c81c4
HMH		 1082}
1083
19d337df
JB		 1084static void printk_deprecated_attribute(const char * const what,
1085 const char * const details)
1086{
1087 tpacpi_log_usertask("deprecated sysfs attribute");
0978e012 1088 pr_warn("WARNING: sysfs attribute %s is deprecated and "
19d337df
JB		 1089 "will be removed. %s\n",
1090 what, details);
1091}
1092
1093/*************************************************************************
1094 * rfkill and radio control support helpers
1095 */
1096
1097/*
1098 * ThinkPad-ACPI firmware handling model:
1099 *
1100 * WLSW (master wireless switch) is event-driven, and is common to all
1101 * firmware-controlled radios. It cannot be controlled, just monitored,
1102 * as expected. It overrides all radio state in firmware
1103 *
1104 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1105 * (TODO: verify how WLSW interacts with the returned radio state).
1106 *
1107 * The only time there are shadow radio state changes, is when
1108 * masked-off hotkeys are used.
1109 */
1110
1111/*
1112 * Internal driver API for radio state:
1113 *
1114 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1115 * bool: true means radio blocked (off)
1116 */
1117enum tpacpi_rfkill_state {
1118 TPACPI_RFK_RADIO_OFF = 0,
1119 TPACPI_RFK_RADIO_ON
1120};
1121
1122/* rfkill switches */
1123enum tpacpi_rfk_id {
1124 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1125 TPACPI_RFK_WWAN_SW_ID,
1126 TPACPI_RFK_UWB_SW_ID,
1127 TPACPI_RFK_SW_MAX
1128};
1129
1130static const char *tpacpi_rfkill_names[] = {
1131 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1132 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1133 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1134 [TPACPI_RFK_SW_MAX] = NULL
1135};
1136
1137/* ThinkPad-ACPI rfkill subdriver */
1138struct tpacpi_rfk {
1139 struct rfkill *rfkill;
1140 enum tpacpi_rfk_id id;
1141 const struct tpacpi_rfk_ops *ops;
1142};
1143
1144struct tpacpi_rfk_ops {
1145 /* firmware interface */
1146 int (*get_status)(void);
1147 int (*set_status)(const enum tpacpi_rfkill_state);
1148};
1149
1150static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1151
1152/* Query FW and update rfkill sw state for a given rfkill switch */
1153static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1154{
1155 int status;
1156
1157 if (!tp_rfk)
1158 return -ENODEV;
1159
1160 status = (tp_rfk->ops->get_status)();
1161 if (status < 0)
1162 return status;
1163
1164 rfkill_set_sw_state(tp_rfk->rfkill,
1165 (status == TPACPI_RFK_RADIO_OFF));
1166
1167 return status;
1168}
1169
1170/* Query FW and update rfkill sw state for all rfkill switches */
1171static void tpacpi_rfk_update_swstate_all(void)
1172{
1173 unsigned int i;
1174
1175 for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
1176 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
1177}
1178
1179/*
1180 * Sync the HW-blocking state of all rfkill switches,
1181 * do notice it causes the rfkill core to schedule uevents
1182 */
1183static void tpacpi_rfk_update_hwblock_state(bool blocked)
1184{
1185 unsigned int i;
1186 struct tpacpi_rfk *tp_rfk;
1187
1188 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1189 tp_rfk = tpacpi_rfkill_switches[i];
1190 if (tp_rfk) {
1191 if (rfkill_set_hw_state(tp_rfk->rfkill,
1192 blocked)) {
1193 /* ignore -- we track sw block */
1194 }
1195 }
1196 }
1197}
1198
1199/* Call to get the WLSW state from the firmware */
1200static int hotkey_get_wlsw(void);
1201
1202/* Call to query WLSW state and update all rfkill switches */
1203static bool tpacpi_rfk_check_hwblock_state(void)
1204{
1205 int res = hotkey_get_wlsw();
1206 int hw_blocked;
1207
1208 /* When unknown or unsupported, we have to assume it is unblocked */
1209 if (res < 0)
1210 return false;
1211
1212 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1213 tpacpi_rfk_update_hwblock_state(hw_blocked);
1214
1215 return hw_blocked;
1216}
1217
1218static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1219{
1220 struct tpacpi_rfk *tp_rfk = data;
1221 int res;
1222
1223 dbg_printk(TPACPI_DBG_RFKILL,
1224 "request to change radio state to %s\n",
1225 blocked ? "blocked" : "unblocked");
1226
1227 /* try to set radio state */
1228 res = (tp_rfk->ops->set_status)(blocked ?
1229 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1230
1231 /* and update the rfkill core with whatever the FW really did */
1232 tpacpi_rfk_update_swstate(tp_rfk);
1233
1234 return (res < 0) ? res : 0;
1235}
1236
1237static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1238 .set_block = tpacpi_rfk_hook_set_block,
1239};
1240
1241static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1242 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1243 const enum rfkill_type rfktype,
1244 const char *name,
19d337df 1245 const bool set_default)
0e74dc26 1246{
19d337df 1247 struct tpacpi_rfk *atp_rfk;
0e74dc26 1248 int res;
06d5caf4 1249 bool sw_state = false;
5451a923 1250 bool hw_state;
06d5caf4 1251 int sw_status;
90d9d3c7 1252
19d337df
JB		 1253 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1254
19d337df
JB		 1255 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1256 if (atp_rfk)
1257 atp_rfk->rfkill = rfkill_alloc(name,
1258 &tpacpi_pdev->dev,
1259 rfktype,
1260 &tpacpi_rfk_rfkill_ops,
1261 atp_rfk);
1262 if (!atp_rfk || !atp_rfk->rfkill) {
0978e012 1263 pr_err("failed to allocate memory for rfkill class\n");
19d337df 1264 kfree(atp_rfk);
0e74dc26
HMH		 1265 return -ENOMEM;
1266 }
1267
19d337df
JB		 1268 atp_rfk->id = id;
1269 atp_rfk->ops = tp_rfkops;
0e74dc26 1270
06d5caf4
AJ		 1271 sw_status = (tp_rfkops->get_status)();
1272 if (sw_status < 0) {
0978e012
JP		 1273 pr_err("failed to read initial state for %s, error %d\n",
1274 name, sw_status);
b3fa1329 1275 } else {
06d5caf4 1276 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1277 if (set_default) {
1278 /* try to keep the initial state, since we ask the
1279 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1280 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1281 }
1282 }
5451a923
HMH		 1283 hw_state = tpacpi_rfk_check_hwblock_state();
1284 rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
19d337df
JB		 1285
1286 res = rfkill_register(atp_rfk->rfkill);
0e74dc26 1287 if (res < 0) {
0978e012 1288 pr_err("failed to register %s rfkill switch: %d\n", name, res);
19d337df
JB		 1289 rfkill_destroy(atp_rfk->rfkill);
1290 kfree(atp_rfk);
0e74dc26
HMH		 1291 return res;
1292 }
1293
19d337df 1294 tpacpi_rfkill_switches[id] = atp_rfk;
5451a923 1295
0978e012 1296 pr_info("rfkill switch %s: radio is %sblocked\n",
5451a923 1297 name, (sw_state || hw_state) ? "" : "un");
0e74dc26
HMH		 1298 return 0;
1299}
1300
19d337df 1301static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1302{
19d337df
JB		 1303 struct tpacpi_rfk *tp_rfk;
1304
1305 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1306
1307 tp_rfk = tpacpi_rfkill_switches[id];
1308 if (tp_rfk) {
1309 rfkill_unregister(tp_rfk->rfkill);
5f0dadb4 1310 rfkill_destroy(tp_rfk->rfkill);
19d337df
JB		 1311 tpacpi_rfkill_switches[id] = NULL;
1312 kfree(tp_rfk);
1313 }
73a94d86
HMH		 1314}
1315
1316static void printk_deprecated_rfkill_attribute(const char * const what)
1317{
1318 printk_deprecated_attribute(what,
1319 "Please switch to generic rfkill before year 2010");
1320}
1321
19d337df
JB		 1322/* sysfs <radio> enable ------------------------------------------------ */
1323static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1324 struct device_attribute *attr,
1325 char *buf)
1326{
1327 int status;
1328
1329 printk_deprecated_rfkill_attribute(attr->attr.name);
1330
1331 /* This is in the ABI... */
1332 if (tpacpi_rfk_check_hwblock_state()) {
1333 status = TPACPI_RFK_RADIO_OFF;
1334 } else {
1335 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1336 if (status < 0)
1337 return status;
1338 }
1339
1340 return snprintf(buf, PAGE_SIZE, "%d\n",
1341 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1342}
1343
1344static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1345 struct device_attribute *attr,
1346 const char *buf, size_t count)
1347{
1348 unsigned long t;
1349 int res;
1350
1351 printk_deprecated_rfkill_attribute(attr->attr.name);
1352
1353 if (parse_strtoul(buf, 1, &t))
1354 return -EINVAL;
1355
1356 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1357
1358 /* This is in the ABI... */
1359 if (tpacpi_rfk_check_hwblock_state() && !!t)
1360 return -EPERM;
1361
1362 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1363 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1364 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1365
1366 return (res < 0) ? res : count;
1367}
1368
1369/* procfs -------------------------------------------------------------- */
887965e6 1370static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
19d337df 1371{
19d337df 1372 if (id >= TPACPI_RFK_SW_MAX)
887965e6 1373 seq_printf(m, "status:\t\tnot supported\n");
19d337df
JB		 1374 else {
1375 int status;
1376
1377 /* This is in the ABI... */
1378 if (tpacpi_rfk_check_hwblock_state()) {
1379 status = TPACPI_RFK_RADIO_OFF;
1380 } else {
1381 status = tpacpi_rfk_update_swstate(
1382 tpacpi_rfkill_switches[id]);
1383 if (status < 0)
1384 return status;
1385 }
1386
887965e6 1387 seq_printf(m, "status:\t\t%s\n",
19d337df
JB		 1388 (status == TPACPI_RFK_RADIO_ON) ?
1389 "enabled" : "disabled");
887965e6 1390 seq_printf(m, "commands:\tenable, disable\n");
19d337df
JB		 1391 }
1392
887965e6 1393 return 0;
19d337df
JB		 1394}
1395
1396static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1397{
1398 char *cmd;
1399 int status = -1;
1400 int res = 0;
1401
1402 if (id >= TPACPI_RFK_SW_MAX)
1403 return -ENODEV;
1404
1405 while ((cmd = next_cmd(&buf))) {
1406 if (strlencmp(cmd, "enable") == 0)
1407 status = TPACPI_RFK_RADIO_ON;
1408 else if (strlencmp(cmd, "disable") == 0)
1409 status = TPACPI_RFK_RADIO_OFF;
1410 else
1411 return -EINVAL;
1412 }
1413
1414 if (status != -1) {
1415 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1416 (status == TPACPI_RFK_RADIO_ON) ?
1417 "enable" : "disable",
1418 tpacpi_rfkill_names[id]);
1419 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1420 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1421 }
1422
1423 return res;
1424}
1425
56b6aeb0 1426/*************************************************************************
b21a15f6 1427 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1428 */
1429
b21a15f6
HMH		 1430/* interface_version --------------------------------------------------- */
1431static ssize_t tpacpi_driver_interface_version_show(
1432 struct device_driver *drv,
1433 char *buf)
1da177e4 1434{
b21a15f6
HMH		 1435 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1436}
1437
1438static DRIVER_ATTR(interface_version, S_IRUGO,
1439 tpacpi_driver_interface_version_show, NULL);
1440
1441/* debug_level --------------------------------------------------------- */
1442static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1443 char *buf)
1444{
1445 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1446}
1447
1448static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1449 const char *buf, size_t count)
1450{
1451 unsigned long t;
1452
1453 if (parse_strtoul(buf, 0xffff, &t))
1454 return -EINVAL;
1455
1456 dbg_level = t;
1457
1458 return count;
1459}
1460
1461static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1462 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1463
1464/* version ------------------------------------------------------------- */
1465static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1466 char *buf)
1467{
35ff8b9f
HMH		 1468 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1469 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 1470}
1471
1472static DRIVER_ATTR(version, S_IRUGO,
1473 tpacpi_driver_version_show, NULL);
1474
1475/* --------------------------------------------------------------------- */
1476
a73f3091
HMH		 1477#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1478
a73f3091
HMH		 1479/* wlsw_emulstate ------------------------------------------------------ */
1480static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1481 char *buf)
1482{
1483 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1484}
1485
1486static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1487 const char *buf, size_t count)
1488{
1489 unsigned long t;
1490
1491 if (parse_strtoul(buf, 1, &t))
1492 return -EINVAL;
1493
19d337df 1494 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1495 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1496 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1497 }
a73f3091
HMH		 1498
1499 return count;
1500}
1501
1502static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1503 tpacpi_driver_wlsw_emulstate_show,
1504 tpacpi_driver_wlsw_emulstate_store);
1505
1506/* bluetooth_emulstate ------------------------------------------------- */
1507static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1508 struct device_driver *drv,
1509 char *buf)
1510{
1511 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1512}
1513
1514static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1515 struct device_driver *drv,
1516 const char *buf, size_t count)
1517{
1518 unsigned long t;
1519
1520 if (parse_strtoul(buf, 1, &t))
1521 return -EINVAL;
1522
1523 tpacpi_bluetooth_emulstate = !!t;
1524
1525 return count;
1526}
1527
1528static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1529 tpacpi_driver_bluetooth_emulstate_show,
1530 tpacpi_driver_bluetooth_emulstate_store);
1531
1532/* wwan_emulstate ------------------------------------------------- */
1533static ssize_t tpacpi_driver_wwan_emulstate_show(
1534 struct device_driver *drv,
1535 char *buf)
1536{
1537 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1538}
1539
1540static ssize_t tpacpi_driver_wwan_emulstate_store(
1541 struct device_driver *drv,
1542 const char *buf, size_t count)
1543{
1544 unsigned long t;
1545
1546 if (parse_strtoul(buf, 1, &t))
1547 return -EINVAL;
1548
1549 tpacpi_wwan_emulstate = !!t;
1550
1551 return count;
1552}
1553
1554static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1555 tpacpi_driver_wwan_emulstate_show,
1556 tpacpi_driver_wwan_emulstate_store);
1557
0045c0aa
HMH		 1558/* uwb_emulstate ------------------------------------------------- */
1559static ssize_t tpacpi_driver_uwb_emulstate_show(
1560 struct device_driver *drv,
1561 char *buf)
1562{
1563 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1564}
1565
1566static ssize_t tpacpi_driver_uwb_emulstate_store(
1567 struct device_driver *drv,
1568 const char *buf, size_t count)
1569{
1570 unsigned long t;
1571
1572 if (parse_strtoul(buf, 1, &t))
1573 return -EINVAL;
1574
1575 tpacpi_uwb_emulstate = !!t;
1576
1577 return count;
1578}
1579
1580static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1581 tpacpi_driver_uwb_emulstate_show,
1582 tpacpi_driver_uwb_emulstate_store);
a73f3091
HMH		 1583#endif
1584
1585/* --------------------------------------------------------------------- */
1586
35ff8b9f 1587static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1588 &driver_attr_debug_level, &driver_attr_version,
1589 &driver_attr_interface_version,
1590};
1591
1592static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1593{
1594 int i, res;
1595
1596 i = 0;
1597 res = 0;
1598 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1599 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1600 i++;
1601 }
1602
a73f3091
HMH		 1603#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1604 if (!res && dbg_wlswemul)
1605 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1606 if (!res && dbg_bluetoothemul)
1607 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1608 if (!res && dbg_wwanemul)
1609 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1610 if (!res && dbg_uwbemul)
1611 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1612#endif
1613
b21a15f6
HMH		 1614 return res;
1615}
1616
1617static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1618{
1619 int i;
1620
35ff8b9f 1621 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1622 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1623
1624#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1625 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1626 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1627 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1628 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1629#endif
b21a15f6
HMH		 1630}
1631
600a99fa
HMH		 1632/*************************************************************************
1633 * Firmware Data
1634 */
1635
1636/*
1637 * Table of recommended minimum BIOS versions
1638 *
1639 * Reasons for listing:
9ddc5b6f 1640 * 1. Stable BIOS, listed because the unknown amount of
600a99fa
HMH		 1641 * bugs and bad ACPI behaviour on older versions
1642 *
1643 * 2. BIOS or EC fw with known bugs that trigger on Linux
1644 *
1645 * 3. BIOS with known reduced functionality in older versions
1646 *
1647 * We recommend the latest BIOS and EC version.
1648 * We only support the latest BIOS and EC fw version as a rule.
1649 *
1650 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1651 * Information from users in ThinkWiki
e675abaf
HMH		 1652 *
1653 * WARNING: we use this table also to detect that the machine is
1654 * a ThinkPad in some cases, so don't remove entries lightly.
600a99fa
HMH		 1655 */
1656
1657#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1658 { .vendor = (__v), \
1659 .bios = TPID(__id1, __id2), \
1660 .ec = TPACPI_MATCH_ANY, \
1661 .quirks = TPACPI_MATCH_ANY << 16 \
1662 | (__bv1) << 8 | (__bv2) }
1663
1664#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
275014ae 1665 __eid, __ev1, __ev2) \
600a99fa
HMH		 1666 { .vendor = (__v), \
1667 .bios = TPID(__bid1, __bid2), \
275014ae 1668 .ec = __eid, \
600a99fa
HMH		 1669 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1670 | (__bv1) << 8 | (__bv2) }
1671
1672#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1673 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1674
275014ae 1675/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1676#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1677 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
275014ae
HMH		 1678 __bv1, __bv2, TPID(__id1, __id2), \
1679 __ev1, __ev2), \
1680 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1681 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1682 __ev1, __ev2)
600a99fa 1683
275014ae 1684/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1685#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1686 __eid1, __eid2, __ev1, __ev2) \
1687 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
275014ae
HMH		 1688 __bv1, __bv2, TPID(__eid1, __eid2), \
1689 __ev1, __ev2), \
1690 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1691 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1692 __ev1, __ev2)
600a99fa
HMH		 1693
1694#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1695 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1696
1697#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1698 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
275014ae
HMH		 1699 __bv1, __bv2, TPID(__id1, __id2), \
1700 __ev1, __ev2)
600a99fa
HMH		 1701
1702#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1703 __eid1, __eid2, __ev1, __ev2) \
1704 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
275014ae
HMH		 1705 __bv1, __bv2, TPID(__eid1, __eid2), \
1706 __ev1, __ev2)
600a99fa
HMH		 1707
1708static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1709 /* Numeric models ------------------ */
1710 /* FW MODEL BIOS VERS */
1711 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1712 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1713 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1714 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1715 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1716 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1717 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1718 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1719 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1720
1721 /* A-series ------------------------- */
1722 /* FW MODEL BIOS VERS EC VERS */
1723 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1724 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1725 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1726 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1727 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1728 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1729 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1730 TPV_QI0('1', '3', '2', '0'), /* A22m */
1731 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1732 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1733 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1734
1735 /* G-series ------------------------- */
1736 /* FW MODEL BIOS VERS */
1737 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1738 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1739
1740 /* R-series, T-series --------------- */
1741 /* FW MODEL BIOS VERS EC VERS */
1742 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1743 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1744 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1745 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1746 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1747 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1748 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1749 T40/p, T41/p, T42/p (1) */
1750 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1751 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1752 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1753 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1754
1755 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1756 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1757 TPV_QI0('1', '6', '3', '2'), /* T22 */
1758 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1759 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1760 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1761
1762 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1763 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
90765c6a 1764 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
600a99fa
HMH		 1765
1766 /* BIOS FW BIOS VERS EC FW EC VERS */
1767 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1768 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1769
1770 /* X-series ------------------------- */
1771 /* FW MODEL BIOS VERS EC VERS */
1772 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1773 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1774 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1775 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1776 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1777 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1778 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1779
90765c6a
HMH		 1780 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1781 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
600a99fa
HMH		 1782
1783 /* (0) - older versions lack DMI EC fw string and functionality */
1784 /* (1) - older versions known to lack functionality */
1785};
1786
1787#undef TPV_QL1
1788#undef TPV_QL0
1789#undef TPV_QI2
1790#undef TPV_QI1
1791#undef TPV_QI0
1792#undef TPV_Q_X
1793#undef TPV_Q
1794
1795static void __init tpacpi_check_outdated_fw(void)
1796{
1797 unsigned long fwvers;
1798 u16 ec_version, bios_version;
1799
1800 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1801 ARRAY_SIZE(tpacpi_bios_version_qtable));
1802
1803 if (!fwvers)
1804 return;
1805
1806 bios_version = fwvers & 0xffffU;
1807 ec_version = (fwvers >> 16) & 0xffffU;
1808
1809 /* note that unknown versions are set to 0x0000 and we use that */
1810 if ((bios_version > thinkpad_id.bios_release) ||
1811 (ec_version > thinkpad_id.ec_release &&
1812 ec_version != TPACPI_MATCH_ANY)) {
1813 /*
1814 * The changelogs would let us track down the exact
1815 * reason, but it is just too much of a pain to track
1816 * it. We only list BIOSes that are either really
1817 * broken, or really stable to begin with, so it is
1818 * best if the user upgrades the firmware anyway.
1819 */
0978e012
JP		 1820 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1821 pr_warn("WARNING: This firmware may be missing critical bug "
600a99fa
HMH		 1822 "fixes and/or important features\n");
1823 }
1824}
1825
e675abaf
HMH		 1826static bool __init tpacpi_is_fw_known(void)
1827{
1828 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1829 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1830}
1831
b21a15f6
HMH		 1832/****************************************************************************
1833 ****************************************************************************
1834 *
1835 * Subdrivers
1836 *
1837 ****************************************************************************
1838 ****************************************************************************/
1839
1840/*************************************************************************
7a43f788 1841 * thinkpad-acpi metadata subdriver
b21a15f6
HMH		 1842 */
1843
887965e6 1844static int thinkpad_acpi_driver_read(struct seq_file *m)
1da177e4 1845{
887965e6
AD		 1846 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
1847 seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
1848 return 0;
1da177e4
LT		 1849}
1850
a5763f22
HMH		 1851static struct ibm_struct thinkpad_acpi_driver_data = {
1852 .name = "driver",
1853 .read = thinkpad_acpi_driver_read,
1854};
1855
56b6aeb0
HMH		 1856/*************************************************************************
1857 * Hotkey subdriver
1858 */
1859
0d922e3b
HMH		 1860/*
1861 * ThinkPad firmware event model
1862 *
1863 * The ThinkPad firmware has two main event interfaces: normal ACPI
1864 * notifications (which follow the ACPI standard), and a private event
1865 * interface.
1866 *
1867 * The private event interface also issues events for the hotkeys. As
1868 * the driver gained features, the event handling code ended up being
1869 * built around the hotkey subdriver. This will need to be refactored
1870 * to a more formal event API eventually.
1871 *
1872 * Some "hotkeys" are actually supposed to be used as event reports,
1873 * such as "brightness has changed", "volume has changed", depending on
1874 * the ThinkPad model and how the firmware is operating.
1875 *
1876 * Unlike other classes, hotkey-class events have mask/unmask control on
1877 * non-ancient firmware. However, how it behaves changes a lot with the
1878 * firmware model and version.
1879 */
1880
f74a27d4
HMH		 1881enum { /* hot key scan codes (derived from ACPI DSDT) */
1882 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1883 TP_ACPI_HOTKEYSCAN_FNF2,
1884 TP_ACPI_HOTKEYSCAN_FNF3,
1885 TP_ACPI_HOTKEYSCAN_FNF4,
1886 TP_ACPI_HOTKEYSCAN_FNF5,
1887 TP_ACPI_HOTKEYSCAN_FNF6,
1888 TP_ACPI_HOTKEYSCAN_FNF7,
1889 TP_ACPI_HOTKEYSCAN_FNF8,
1890 TP_ACPI_HOTKEYSCAN_FNF9,
1891 TP_ACPI_HOTKEYSCAN_FNF10,
1892 TP_ACPI_HOTKEYSCAN_FNF11,
1893 TP_ACPI_HOTKEYSCAN_FNF12,
1894 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1895 TP_ACPI_HOTKEYSCAN_FNINSERT,
1896 TP_ACPI_HOTKEYSCAN_FNDELETE,
1897 TP_ACPI_HOTKEYSCAN_FNHOME,
1898 TP_ACPI_HOTKEYSCAN_FNEND,
1899 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1900 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1901 TP_ACPI_HOTKEYSCAN_FNSPACE,
1902 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1903 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1904 TP_ACPI_HOTKEYSCAN_MUTE,
1905 TP_ACPI_HOTKEYSCAN_THINKPAD,
34a656d2
HMH		 1906 TP_ACPI_HOTKEYSCAN_UNK1,
1907 TP_ACPI_HOTKEYSCAN_UNK2,
1908 TP_ACPI_HOTKEYSCAN_UNK3,
1909 TP_ACPI_HOTKEYSCAN_UNK4,
1910 TP_ACPI_HOTKEYSCAN_UNK5,
1911 TP_ACPI_HOTKEYSCAN_UNK6,
1912 TP_ACPI_HOTKEYSCAN_UNK7,
1913 TP_ACPI_HOTKEYSCAN_UNK8,
1914
1915 /* Hotkey keymap size */
1916 TPACPI_HOTKEY_MAP_LEN
f74a27d4
HMH		 1917};
1918
0d922e3b 1919enum { /* Keys/events available through NVRAM polling */
01e88f25
HMH		 1920 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1921 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1922};
1923
1924enum { /* Positions of some of the keys in hotkey masks */
1925 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1926 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1927 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1928 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1929 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1930 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1931 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1932 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1933 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1934 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1935 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1936};
1937
1938enum { /* NVRAM to ACPI HKEY group map */
1939 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1940 TP_ACPI_HKEY_ZOOM_MASK |
1941 TP_ACPI_HKEY_DISPSWTCH_MASK |
1942 TP_ACPI_HKEY_HIBERNATE_MASK,
1943 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1944 TP_ACPI_HKEY_BRGHTDWN_MASK,
1945 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1946 TP_ACPI_HKEY_VOLDWN_MASK |
1947 TP_ACPI_HKEY_MUTE_MASK,
1948};
1949
1950#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1951struct tp_nvram_state {
1952 u16 thinkpad_toggle:1;
1953 u16 zoom_toggle:1;
1954 u16 display_toggle:1;
1955 u16 thinklight_toggle:1;
1956 u16 hibernate_toggle:1;
1957 u16 displayexp_toggle:1;
1958 u16 display_state:1;
1959 u16 brightness_toggle:1;
1960 u16 volume_toggle:1;
1961 u16 mute:1;
1962
1963 u8 brightness_level;
1964 u8 volume_level;
1965};
1966
db25f16d 1967/* kthread for the hotkey poller */
01e88f25 1968static struct task_struct *tpacpi_hotkey_task;
db25f16d 1969
db25f16d 1970/*
0d922e3b
HMH		 1971 * Acquire mutex to write poller control variables as an
1972 * atomic block.
1973 *
1974 * Increment hotkey_config_change when changing them if you
1975 * want the kthread to forget old state.
db25f16d
HMH		 1976 *
1977 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1978 */
01e88f25
HMH		 1979static struct mutex hotkey_thread_data_mutex;
1980static unsigned int hotkey_config_change;
1981
db25f16d
HMH		 1982/*
1983 * hotkey poller control variables
1984 *
1985 * Must be atomic or readers will also need to acquire mutex
0d922e3b
HMH		 1986 *
1987 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1988 * should be used only when the changes need to be taken as
1989 * a block, OR when one needs to force the kthread to forget
1990 * old state.
db25f16d
HMH		 1991 */
1992static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1993static unsigned int hotkey_poll_freq = 10; /* Hz */
1994
1995#define HOTKEY_CONFIG_CRITICAL_START \
1996 do { \
1997 mutex_lock(&hotkey_thread_data_mutex); \
1998 hotkey_config_change++; \
1999 } while (0);
2000#define HOTKEY_CONFIG_CRITICAL_END \
2001 mutex_unlock(&hotkey_thread_data_mutex);
2002
01e88f25
HMH		 2003#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2004
2005#define hotkey_source_mask 0U
db25f16d
HMH		 2006#define HOTKEY_CONFIG_CRITICAL_START
2007#define HOTKEY_CONFIG_CRITICAL_END
01e88f25
HMH		 2008
2009#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2010
f74a27d4
HMH		 2011static struct mutex hotkey_mutex;
2012
a713b4d7
HMH		 2013static enum { /* Reasons for waking up */
2014 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
2015 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
2016 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
2017} hotkey_wakeup_reason;
2018
2019static int hotkey_autosleep_ack;
2020
0d922e3b
HMH		 2021static u32 hotkey_orig_mask; /* events the BIOS had enabled */
2022static u32 hotkey_all_mask; /* all events supported in fw */
2023static u32 hotkey_reserved_mask; /* events better left disabled */
2024static u32 hotkey_driver_mask; /* events needed by the driver */
2025static u32 hotkey_user_mask; /* events visible to userspace */
2026static u32 hotkey_acpi_mask; /* events enabled in firmware */
6a38abbf 2027
edf0e0e5 2028static u16 *hotkey_keycode_map;
78f81cc4 2029
94954cc6 2030static struct attribute_set *hotkey_dev_attributes;
a0416420 2031
8b468c0c
HMH		 2032static void tpacpi_driver_event(const unsigned int hkey_event);
2033static void hotkey_driver_event(const unsigned int scancode);
7f0cf712 2034static void hotkey_poll_setup(const bool may_warn);
8b468c0c 2035
6c231bd5
HMH		 2036/* HKEY.MHKG() return bits */
2037#define TP_HOTKEY_TABLET_MASK (1 << 3)
2038
19d337df 2039static int hotkey_get_wlsw(void)
74941a69 2040{
19d337df
JB		 2041 int status;
2042
2043 if (!tp_features.hotkey_wlsw)
2044 return -ENODEV;
2045
a73f3091 2046#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 2047 if (dbg_wlswemul)
2048 return (tpacpi_wlsw_emulstate) ?
2049 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 2050#endif
19d337df
JB		 2051
2052 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 2053 return -EIO;
19d337df
JB		 2054
2055 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 2056}
2057
6c231bd5
HMH		 2058static int hotkey_get_tablet_mode(int *status)
2059{
2060 int s;
2061
2062 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2063 return -EIO;
2064
cee47f5a
HMH		 2065 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2066 return 0;
6c231bd5
HMH		 2067}
2068
b2c985e7 2069/*
0d922e3b
HMH		 2070 * Reads current event mask from firmware, and updates
2071 * hotkey_acpi_mask accordingly. Also resets any bits
2072 * from hotkey_user_mask that are unavailable to be
2073 * delivered (shadow requirement of the userspace ABI).
2074 *
b2c985e7
HMH		 2075 * Call with hotkey_mutex held
2076 */
2077static int hotkey_mask_get(void)
2078{
2079 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 2080 u32 m = 0;
2081
01e88f25 2082 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7 2083 return -EIO;
0d922e3b
HMH		 2084
2085 hotkey_acpi_mask = m;
2086 } else {
2087 /* no mask support doesn't mean no event support... */
2088 hotkey_acpi_mask = hotkey_all_mask;
b2c985e7 2089 }
0d922e3b
HMH		 2090
2091 /* sync userspace-visible mask */
2092 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
b2c985e7
HMH		 2093
2094 return 0;
2095}
2096
0d922e3b
HMH		 2097void static hotkey_mask_warn_incomplete_mask(void)
2098{
2099 /* log only what the user can fix... */
2100 const u32 wantedmask = hotkey_driver_mask &
2101 ~(hotkey_acpi_mask | hotkey_source_mask) &
2102 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
2103
2104 if (wantedmask)
0978e012 2105 pr_notice("required events 0x%08x not enabled!\n", wantedmask);
0d922e3b
HMH		 2106}
2107
b2c985e7 2108/*
0d922e3b
HMH		 2109 * Set the firmware mask when supported
2110 *
2111 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2112 *
2113 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2114 *
b2c985e7
HMH		 2115 * Call with hotkey_mutex held
2116 */
2117static int hotkey_mask_set(u32 mask)
2118{
2119 int i;
2120 int rc = 0;
2121
0d922e3b 2122 const u32 fwmask = mask & ~hotkey_source_mask;
92889022 2123
0d922e3b 2124 if (tp_features.hotkey_mask) {
b2c985e7 2125 for (i = 0; i < 32; i++) {
b2c985e7
HMH		 2126 if (!acpi_evalf(hkey_handle,
2127 NULL, "MHKM", "vdd", i + 1,
0d922e3b 2128 !!(mask & (1 << i)))) {
b2c985e7
HMH		 2129 rc = -EIO;
2130 break;
b2c985e7
HMH		 2131 }
2132 }
0d922e3b 2133 }
b2c985e7 2134
0d922e3b
HMH		 2135 /*
2136 * We *must* make an inconditional call to hotkey_mask_get to
2137 * refresh hotkey_acpi_mask and update hotkey_user_mask
2138 *
2139 * Take the opportunity to also log when we cannot _enable_
2140 * a given event.
2141 */
2142 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
0978e012
JP		 2143 pr_notice("asked for hotkey mask 0x%08x, but "
2144 "firmware forced it to 0x%08x\n",
2145 fwmask, hotkey_acpi_mask);
b2c985e7
HMH		 2146 }
2147
6b30eb7d
HMH		 2148 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
2149 hotkey_mask_warn_incomplete_mask();
0d922e3b
HMH		 2150
2151 return rc;
2152}
2153
2154/*
2155 * Sets hotkey_user_mask and tries to set the firmware mask
2156 *
2157 * Call with hotkey_mutex held
2158 */
2159static int hotkey_user_mask_set(const u32 mask)
2160{
2161 int rc;
2162
2163 /* Give people a chance to notice they are doing something that
2164 * is bound to go boom on their users sooner or later */
2165 if (!tp_warned.hotkey_mask_ff &&
2166 (mask == 0xffff || mask == 0xffffff ||
2167 mask == 0xffffffff)) {
2168 tp_warned.hotkey_mask_ff = 1;
0978e012
JP		 2169 pr_notice("setting the hotkey mask to 0x%08x is likely "
2170 "not the best way to go about it\n", mask);
2171 pr_notice("please consider using the driver defaults, "
2172 "and refer to up-to-date thinkpad-acpi "
2173 "documentation\n");
0d922e3b
HMH		 2174 }
2175
2176 /* Try to enable what the user asked for, plus whatever we need.
2177 * this syncs everything but won't enable bits in hotkey_user_mask */
2178 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
2179
2180 /* Enable the available bits in hotkey_user_mask */
2181 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
2182
b2c985e7
HMH		 2183 return rc;
2184}
2185
8b468c0c
HMH		 2186/*
2187 * Sets the driver hotkey mask.
2188 *
2189 * Can be called even if the hotkey subdriver is inactive
2190 */
2191static int tpacpi_hotkey_driver_mask_set(const u32 mask)
2192{
2193 int rc;
2194
2195 /* Do the right thing if hotkey_init has not been called yet */
2196 if (!tp_features.hotkey) {
2197 hotkey_driver_mask = mask;
2198 return 0;
2199 }
2200
2201 mutex_lock(&hotkey_mutex);
2202
2203 HOTKEY_CONFIG_CRITICAL_START
2204 hotkey_driver_mask = mask;
b684a363 2205#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
8b468c0c 2206 hotkey_source_mask |= (mask & ~hotkey_all_mask);
b684a363 2207#endif
8b468c0c
HMH		 2208 HOTKEY_CONFIG_CRITICAL_END
2209
2210 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2211 ~hotkey_source_mask);
7f0cf712
HMH		 2212 hotkey_poll_setup(true);
2213
8b468c0c
HMH		 2214 mutex_unlock(&hotkey_mutex);
2215
2216 return rc;
2217}
2218
b2c985e7
HMH		 2219static int hotkey_status_get(int *status)
2220{
2221 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2222 return -EIO;
2223
2224 return 0;
2225}
2226
2586d566 2227static int hotkey_status_set(bool enable)
b2c985e7 2228{
2586d566 2229 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 2230 return -EIO;
2231
2232 return 0;
2233}
2234
6c231bd5 2235static void tpacpi_input_send_tabletsw(void)
b3ec6f91 2236{
6c231bd5 2237 int state;
b3ec6f91 2238
6c231bd5
HMH		 2239 if (tp_features.hotkey_tablet &&
2240 !hotkey_get_tablet_mode(&state)) {
2241 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 2242
6c231bd5
HMH		 2243 input_report_switch(tpacpi_inputdev,
2244 SW_TABLET_MODE, !!state);
2245 input_sync(tpacpi_inputdev);
2246
2247 mutex_unlock(&tpacpi_inputdev_send_mutex);
2248 }
b3ec6f91
HMH		 2249}
2250
0d922e3b
HMH		 2251/* Do NOT call without validating scancode first */
2252static void tpacpi_input_send_key(const unsigned int scancode)
b7c8c200 2253{
0d922e3b 2254 const unsigned int keycode = hotkey_keycode_map[scancode];
b7c8c200
HMH		 2255
2256 if (keycode != KEY_RESERVED) {
2257 mutex_lock(&tpacpi_inputdev_send_mutex);
2258
5ffba7e6 2259 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2260 input_report_key(tpacpi_inputdev, keycode, 1);
b7c8c200
HMH		 2261 input_sync(tpacpi_inputdev);
2262
5ffba7e6 2263 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2264 input_report_key(tpacpi_inputdev, keycode, 0);
b7c8c200
HMH		 2265 input_sync(tpacpi_inputdev);
2266
2267 mutex_unlock(&tpacpi_inputdev_send_mutex);
2268 }
2269}
2270
0d922e3b
HMH		 2271/* Do NOT call without validating scancode first */
2272static void tpacpi_input_send_key_masked(const unsigned int scancode)
2273{
8b468c0c 2274 hotkey_driver_event(scancode);
0d922e3b
HMH		 2275 if (hotkey_user_mask & (1 << scancode))
2276 tpacpi_input_send_key(scancode);
2277}
2278
01e88f25
HMH		 2279#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2280static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2281
0d922e3b 2282/* Do NOT call without validating scancode first */
01e88f25
HMH		 2283static void tpacpi_hotkey_send_key(unsigned int scancode)
2284{
0d922e3b 2285 tpacpi_input_send_key_masked(scancode);
01e88f25
HMH		 2286}
2287
0d922e3b 2288static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
01e88f25
HMH		 2289{
2290 u8 d;
2291
2292 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2293 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2294 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2295 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2296 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2297 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2298 }
2299 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
2300 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2301 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2302 }
2303 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2304 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2305 n->displayexp_toggle =
2306 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2307 }
2308 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2309 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2310 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2311 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2312 n->brightness_toggle =
2313 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2314 }
2315 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2316 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2317 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2318 >> TP_NVRAM_POS_LEVEL_VOLUME;
2319 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2320 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2321 }
2322}
2323
0d922e3b
HMH		 2324static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2325 struct tp_nvram_state *newn,
2326 const u32 event_mask)
2327{
2328
01e88f25 2329#define TPACPI_COMPARE_KEY(__scancode, __member) \
35ff8b9f 2330 do { \
0d922e3b 2331 if ((event_mask & (1 << __scancode)) && \
35ff8b9f 2332 oldn->__member != newn->__member) \
0d922e3b 2333 tpacpi_hotkey_send_key(__scancode); \
35ff8b9f 2334 } while (0)
01e88f25
HMH		 2335
2336#define TPACPI_MAY_SEND_KEY(__scancode) \
0d922e3b
HMH		 2337 do { \
2338 if (event_mask & (1 << __scancode)) \
2339 tpacpi_hotkey_send_key(__scancode); \
2340 } while (0)
01e88f25 2341
5d756db9
HMH		 2342 void issue_volchange(const unsigned int oldvol,
2343 const unsigned int newvol)
2344 {
2345 unsigned int i = oldvol;
2346
2347 while (i > newvol) {
2348 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2349 i--;
2350 }
2351 while (i < newvol) {
2352 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2353 i++;
2354 }
2355 }
2356
28999022
HMH		 2357 void issue_brightnesschange(const unsigned int oldbrt,
2358 const unsigned int newbrt)
2359 {
2360 unsigned int i = oldbrt;
2361
2362 while (i > newbrt) {
2363 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2364 i--;
2365 }
2366 while (i < newbrt) {
2367 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2368 i++;
2369 }
2370 }
2371
01e88f25
HMH		 2372 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2373 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2374 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2375 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2376
2377 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2378
2379 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2380
5d756db9
HMH		 2381 /*
2382 * Handle volume
2383 *
2384 * This code is supposed to duplicate the IBM firmware behaviour:
2385 * - Pressing MUTE issues mute hotkey message, even when already mute
2386 * - Pressing Volume up/down issues volume up/down hotkey messages,
c8440336 2387 * even when already at maximum or minimum volume
5d756db9
HMH		 2388 * - The act of unmuting issues volume up/down notification,
2389 * depending which key was used to unmute
2390 *
2391 * We are constrained to what the NVRAM can tell us, which is not much
2392 * and certainly not enough if more than one volume hotkey was pressed
2393 * since the last poll cycle.
2394 *
2395 * Just to make our life interesting, some newer Lenovo ThinkPads have
2396 * bugs in the BIOS and may fail to update volume_toggle properly.
2397 */
2398 if (newn->mute) {
2399 /* muted */
2400 if (!oldn->mute ||
2401 oldn->volume_toggle != newn->volume_toggle ||
2402 oldn->volume_level != newn->volume_level) {
2403 /* recently muted, or repeated mute keypress, or
2404 * multiple presses ending in mute */
2405 issue_volchange(oldn->volume_level, newn->volume_level);
01e88f25
HMH		 2406 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2407 }
5d756db9
HMH		 2408 } else {
2409 /* unmute */
2410 if (oldn->mute) {
2411 /* recently unmuted, issue 'unmute' keypress */
01e88f25 2412 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
5d756db9
HMH		 2413 }
2414 if (oldn->volume_level != newn->volume_level) {
2415 issue_volchange(oldn->volume_level, newn->volume_level);
2416 } else if (oldn->volume_toggle != newn->volume_toggle) {
2417 /* repeated vol up/down keypress at end of scale ? */
2418 if (newn->volume_level == 0)
01e88f25 2419 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
5d756db9
HMH		 2420 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
2421 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
01e88f25
HMH		 2422 }
2423 }
2424
2425 /* handle brightness */
28999022
HMH		 2426 if (oldn->brightness_level != newn->brightness_level) {
2427 issue_brightnesschange(oldn->brightness_level,
2428 newn->brightness_level);
2429 } else if (oldn->brightness_toggle != newn->brightness_toggle) {
2430 /* repeated key presses that didn't change state */
2431 if (newn->brightness_level == 0)
01e88f25 2432 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
28999022
HMH		 2433 else if (newn->brightness_level >= bright_maxlvl
2434 && !tp_features.bright_unkfw)
2435 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
01e88f25 2436 }
01e88f25
HMH		 2437
2438#undef TPACPI_COMPARE_KEY
2439#undef TPACPI_MAY_SEND_KEY
0d922e3b 2440}
01e88f25 2441
0d922e3b
HMH		 2442/*
2443 * Polling driver
2444 *
2445 * We track all events in hotkey_source_mask all the time, since
2446 * most of them are edge-based. We only issue those requested by
2447 * hotkey_user_mask or hotkey_driver_mask, though.
2448 */
01e88f25
HMH		 2449static int hotkey_kthread(void *data)
2450{
2451 struct tp_nvram_state s[2];
0d922e3b 2452 u32 poll_mask, event_mask;
01e88f25
HMH		 2453 unsigned int si, so;
2454 unsigned long t;
8a32c441 2455 unsigned int change_detector;
db25f16d 2456 unsigned int poll_freq;
8a32c441 2457 bool was_frozen;
01e88f25 2458
01e88f25
HMH		 2459 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2460 goto exit;
2461
2462 set_freezable();
2463
2464 so = 0;
2465 si = 1;
2466 t = 0;
2467
2468 /* Initial state for compares */
2469 mutex_lock(&hotkey_thread_data_mutex);
2470 change_detector = hotkey_config_change;
0d922e3b
HMH		 2471 poll_mask = hotkey_source_mask;
2472 event_mask = hotkey_source_mask &
2473 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2474 poll_freq = hotkey_poll_freq;
01e88f25 2475 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2476 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2477
db25f16d
HMH		 2478 while (!kthread_should_stop()) {
2479 if (t == 0) {
2480 if (likely(poll_freq))
2481 t = 1000/poll_freq;
2482 else
2483 t = 100; /* should never happen... */
2484 }
01e88f25 2485 t = msleep_interruptible(t);
8a32c441 2486 if (unlikely(kthread_freezable_should_stop(&was_frozen)))
01e88f25 2487 break;
8a32c441
TH		 2488
2489 if (t > 0 && !was_frozen)
01e88f25
HMH		 2490 continue;
2491
2492 mutex_lock(&hotkey_thread_data_mutex);
8a32c441 2493 if (was_frozen || hotkey_config_change != change_detector) {
01e88f25
HMH		 2494 /* forget old state on thaw or config change */
2495 si = so;
2496 t = 0;
2497 change_detector = hotkey_config_change;
2498 }
0d922e3b
HMH		 2499 poll_mask = hotkey_source_mask;
2500 event_mask = hotkey_source_mask &
2501 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2502 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2503 mutex_unlock(&hotkey_thread_data_mutex);
2504
0d922e3b
HMH		 2505 if (likely(poll_mask)) {
2506 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2507 if (likely(si != so)) {
2508 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2509 event_mask);
01e88f25
HMH		 2510 }
2511 }
2512
2513 so = si;
2514 si ^= 1;
2515 }
2516
2517exit:
01e88f25
HMH		 2518 return 0;
2519}
2520
db25f16d 2521/* call with hotkey_mutex held */
01e88f25
HMH		 2522static void hotkey_poll_stop_sync(void)
2523{
2524 if (tpacpi_hotkey_task) {
01e88f25
HMH		 2525 kthread_stop(tpacpi_hotkey_task);
2526 tpacpi_hotkey_task = NULL;
01e88f25
HMH		 2527 }
2528}
2529
2530/* call with hotkey_mutex held */
7f0cf712 2531static void hotkey_poll_setup(const bool may_warn)
01e88f25 2532{
0d922e3b
HMH		 2533 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2534 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2535
0d922e3b
HMH		 2536 if (hotkey_poll_freq > 0 &&
2537 (poll_driver_mask ||
2538 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2539 if (!tpacpi_hotkey_task) {
2540 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2541 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2542 if (IS_ERR(tpacpi_hotkey_task)) {
2543 tpacpi_hotkey_task = NULL;
0978e012 2544 pr_err("could not create kernel thread "
01e88f25
HMH		 2545 "for hotkey polling\n");
2546 }
2547 }
2548 } else {
2549 hotkey_poll_stop_sync();
0d922e3b 2550 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2551 hotkey_poll_freq == 0) {
0978e012
JP		 2552 pr_notice("hot keys 0x%08x and/or events 0x%08x "
2553 "require polling, which is currently "
2554 "disabled\n",
2555 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2556 }
2557 }
2558}
2559
7f0cf712 2560static void hotkey_poll_setup_safe(const bool may_warn)
01e88f25
HMH		 2561{
2562 mutex_lock(&hotkey_mutex);
2563 hotkey_poll_setup(may_warn);
2564 mutex_unlock(&hotkey_mutex);
2565}
2566
db25f16d
HMH		 2567/* call with hotkey_mutex held */
2568static void hotkey_poll_set_freq(unsigned int freq)
2569{
2570 if (!freq)
2571 hotkey_poll_stop_sync();
2572
db25f16d 2573 hotkey_poll_freq = freq;
db25f16d
HMH		 2574}
2575
1bc6b9cd
HMH		 2576#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2577
7f0cf712
HMH		 2578static void hotkey_poll_setup(const bool __unused)
2579{
2580}
2581
2582static void hotkey_poll_setup_safe(const bool __unused)
1bc6b9cd
HMH		 2583{
2584}
2585
2586#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2587
01e88f25
HMH		 2588static int hotkey_inputdev_open(struct input_dev *dev)
2589{
2590 switch (tpacpi_lifecycle) {
2591 case TPACPI_LIFE_INIT:
01e88f25 2592 case TPACPI_LIFE_RUNNING:
db25f16d 2593 hotkey_poll_setup_safe(false);
01e88f25 2594 return 0;
b589ea4c
HMH		 2595 case TPACPI_LIFE_EXITING:
2596 return -EBUSY;
01e88f25
HMH		 2597 }
2598
2599 /* Should only happen if tpacpi_lifecycle is corrupt */
2600 BUG();
2601 return -EBUSY;
2602}
2603
2604static void hotkey_inputdev_close(struct input_dev *dev)
2605{
2606 /* disable hotkey polling when possible */
b589ea4c 2607 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
0d922e3b 2608 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2609 hotkey_poll_setup_safe(false);
01e88f25 2610}
01e88f25 2611
a0416420
HMH		 2612/* sysfs hotkey enable ------------------------------------------------- */
2613static ssize_t hotkey_enable_show(struct device *dev,
2614 struct device_attribute *attr,
2615 char *buf)
2616{
ae92bd17 2617 int res, status;
a0416420 2618
2586d566
HMH		 2619 printk_deprecated_attribute("hotkey_enable",
2620 "Hotkey reporting is always enabled");
2621
b2c985e7 2622 res = hotkey_status_get(&status);
a0416420
HMH		 2623 if (res)
2624 return res;
2625
2626 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2627}
2628
2629static ssize_t hotkey_enable_store(struct device *dev,
2630 struct device_attribute *attr,
2631 const char *buf, size_t count)
2632{
2633 unsigned long t;
2586d566
HMH		 2634
2635 printk_deprecated_attribute("hotkey_enable",
2636 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2637
2638 if (parse_strtoul(buf, 1, &t))
2639 return -EINVAL;
2640
2586d566
HMH		 2641 if (t == 0)
2642 return -EPERM;
a0416420 2643
2586d566 2644 return count;
a0416420
HMH		 2645}
2646
2647static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 2648 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 2649 hotkey_enable_show, hotkey_enable_store);
2650
2651/* sysfs hotkey mask --------------------------------------------------- */
2652static ssize_t hotkey_mask_show(struct device *dev,
2653 struct device_attribute *attr,
2654 char *buf)
2655{
0d922e3b 2656 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2657}
2658
2659static ssize_t hotkey_mask_store(struct device *dev,
2660 struct device_attribute *attr,
2661 const char *buf, size_t count)
2662{
2663 unsigned long t;
b2c985e7 2664 int res;
a0416420 2665
ae92bd17 2666 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2667 return -EINVAL;
2668
7646ea88 2669 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2670 return -ERESTARTSYS;
2671
0d922e3b 2672 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2673
2674#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2675 hotkey_poll_setup(true);
01e88f25
HMH		 2676#endif
2677
b2c985e7 2678 mutex_unlock(&hotkey_mutex);
a0416420 2679
56e2c200
HMH		 2680 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2681
a0416420
HMH		 2682 return (res) ? res : count;
2683}
2684
2685static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 2686 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 2687 hotkey_mask_show, hotkey_mask_store);
2688
2689/* sysfs hotkey bios_enabled ------------------------------------------- */
2690static ssize_t hotkey_bios_enabled_show(struct device *dev,
2691 struct device_attribute *attr,
2692 char *buf)
2693{
2586d566 2694 return sprintf(buf, "0\n");
a0416420
HMH		 2695}
2696
2697static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 2698 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 2699
2700/* sysfs hotkey bios_mask ---------------------------------------------- */
2701static ssize_t hotkey_bios_mask_show(struct device *dev,
2702 struct device_attribute *attr,
2703 char *buf)
2704{
06777be6
HMH		 2705 printk_deprecated_attribute("hotkey_bios_mask",
2706 "This attribute is useless.");
ae92bd17 2707 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2708}
2709
2710static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 2711 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 2712
9b010de5
HMH		 2713/* sysfs hotkey all_mask ----------------------------------------------- */
2714static ssize_t hotkey_all_mask_show(struct device *dev,
2715 struct device_attribute *attr,
2716 char *buf)
2717{
01e88f25
HMH		 2718 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2719 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2720}
2721
2722static struct device_attribute dev_attr_hotkey_all_mask =
2723 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2724
2725/* sysfs hotkey recommended_mask --------------------------------------- */
2726static ssize_t hotkey_recommended_mask_show(struct device *dev,
2727 struct device_attribute *attr,
2728 char *buf)
2729{
2730 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2731 (hotkey_all_mask | hotkey_source_mask)
2732 & ~hotkey_reserved_mask);
9b010de5
HMH		 2733}
2734
2735static struct device_attribute dev_attr_hotkey_recommended_mask =
2736 __ATTR(hotkey_recommended_mask, S_IRUGO,
2737 hotkey_recommended_mask_show, NULL);
2738
01e88f25
HMH		 2739#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2740
2741/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2742static ssize_t hotkey_source_mask_show(struct device *dev,
2743 struct device_attribute *attr,
2744 char *buf)
2745{
2746 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2747}
2748
2749static ssize_t hotkey_source_mask_store(struct device *dev,
2750 struct device_attribute *attr,
2751 const char *buf, size_t count)
2752{
2753 unsigned long t;
0d922e3b
HMH		 2754 u32 r_ev;
2755 int rc;
01e88f25
HMH		 2756
2757 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2758 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2759 return -EINVAL;
2760
7646ea88 2761 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2762 return -ERESTARTSYS;
2763
2764 HOTKEY_CONFIG_CRITICAL_START
2765 hotkey_source_mask = t;
2766 HOTKEY_CONFIG_CRITICAL_END
2767
0d922e3b
HMH		 2768 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2769 ~hotkey_source_mask);
db25f16d 2770 hotkey_poll_setup(true);
0d922e3b
HMH		 2771
2772 /* check if events needed by the driver got disabled */
2773 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2774 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2775
2776 mutex_unlock(&hotkey_mutex);
2777
0d922e3b 2778 if (rc < 0)
0978e012
JP		 2779 pr_err("hotkey_source_mask: "
2780 "failed to update the firmware event mask!\n");
0d922e3b
HMH		 2781
2782 if (r_ev)
0978e012
JP		 2783 pr_notice("hotkey_source_mask: "
2784 "some important events were disabled: 0x%04x\n",
2785 r_ev);
0d922e3b 2786
56e2c200
HMH		 2787 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2788
0d922e3b 2789 return (rc < 0) ? rc : count;
01e88f25
HMH		 2790}
2791
2792static struct device_attribute dev_attr_hotkey_source_mask =
2793 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2794 hotkey_source_mask_show, hotkey_source_mask_store);
2795
2796/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2797static ssize_t hotkey_poll_freq_show(struct device *dev,
2798 struct device_attribute *attr,
2799 char *buf)
2800{
2801 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2802}
2803
2804static ssize_t hotkey_poll_freq_store(struct device *dev,
2805 struct device_attribute *attr,
2806 const char *buf, size_t count)
2807{
2808 unsigned long t;
2809
2810 if (parse_strtoul(buf, 25, &t))
2811 return -EINVAL;
2812
7646ea88 2813 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2814 return -ERESTARTSYS;
2815
db25f16d
HMH		 2816 hotkey_poll_set_freq(t);
2817 hotkey_poll_setup(true);
01e88f25 2818
01e88f25
HMH		 2819 mutex_unlock(&hotkey_mutex);
2820
56e2c200
HMH		 2821 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2822
01e88f25
HMH		 2823 return count;
2824}
2825
2826static struct device_attribute dev_attr_hotkey_poll_freq =
2827 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2828 hotkey_poll_freq_show, hotkey_poll_freq_store);
2829
2830#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2831
50ebec09 2832/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2833static ssize_t hotkey_radio_sw_show(struct device *dev,
2834 struct device_attribute *attr,
2835 char *buf)
2836{
19d337df
JB		 2837 int res;
2838 res = hotkey_get_wlsw();
74941a69
HMH		 2839 if (res < 0)
2840 return res;
2841
19d337df
JB		 2842 /* Opportunistic update */
2843 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2844
2845 return snprintf(buf, PAGE_SIZE, "%d\n",
2846 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2847}
2848
2849static struct device_attribute dev_attr_hotkey_radio_sw =
2850 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2851
50ebec09
HMH		 2852static void hotkey_radio_sw_notify_change(void)
2853{
2854 if (tp_features.hotkey_wlsw)
2855 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2856 "hotkey_radio_sw");
2857}
2858
6c231bd5
HMH		 2859/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2860static ssize_t hotkey_tablet_mode_show(struct device *dev,
2861 struct device_attribute *attr,
2862 char *buf)
2863{
2864 int res, s;
2865 res = hotkey_get_tablet_mode(&s);
2866 if (res < 0)
2867 return res;
2868
2869 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2870}
2871
2872static struct device_attribute dev_attr_hotkey_tablet_mode =
2873 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2874
2875static void hotkey_tablet_mode_notify_change(void)
2876{
2877 if (tp_features.hotkey_tablet)
2878 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2879 "hotkey_tablet_mode");
2880}
2881
50ebec09 2882/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2883static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2884 struct device_attribute *attr,
2885 char *buf)
2886{
2887 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2888}
2889
2890static struct device_attribute dev_attr_hotkey_wakeup_reason =
2891 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2892
1d5a2b54 2893static void hotkey_wakeup_reason_notify_change(void)
50ebec09 2894{
0d922e3b
HMH		 2895 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2896 "wakeup_reason");
50ebec09
HMH		 2897}
2898
2899/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2900static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2901 struct device_attribute *attr,
2902 char *buf)
2903{
2904 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2905}
2906
2907static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2908 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2909 hotkey_wakeup_hotunplug_complete_show, NULL);
2910
1d5a2b54 2911static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 2912{
0d922e3b
HMH		 2913 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2914 "wakeup_hotunplug_complete");
50ebec09
HMH		 2915}
2916
a0416420
HMH		 2917/* --------------------------------------------------------------------- */
2918
ff80f137
HMH		 2919static struct attribute *hotkey_attributes[] __initdata = {
2920 &dev_attr_hotkey_enable.attr,
01e88f25 2921 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 2922 &dev_attr_hotkey_bios_mask.attr,
0d922e3b
HMH		 2923 &dev_attr_hotkey_wakeup_reason.attr,
2924 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 2925 &dev_attr_hotkey_mask.attr,
2926 &dev_attr_hotkey_all_mask.attr,
2927 &dev_attr_hotkey_recommended_mask.attr,
0d922e3b 2928#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 2929 &dev_attr_hotkey_source_mask.attr,
2930 &dev_attr_hotkey_poll_freq.attr,
2931#endif
ff80f137
HMH		 2932};
2933
19d337df
JB		 2934/*
2935 * Sync both the hw and sw blocking state of all switches
2936 */
733e27c1
HMH		 2937static void tpacpi_send_radiosw_update(void)
2938{
2939 int wlsw;
2940
19d337df
JB		 2941 /*
2942 * We must sync all rfkill controllers *before* issuing any
2943 * rfkill input events, or we will race the rfkill core input
2944 * handler.
2945 *
c8440336 2946 * tpacpi_inputdev_send_mutex works as a synchronization point
19d337df
JB		 2947 * for the above.
2948 *
2949 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2950 */
2951
2952 wlsw = hotkey_get_wlsw();
2953
2954 /* Sync hw blocking state first if it is hw-blocked */
2955 if (wlsw == TPACPI_RFK_RADIO_OFF)
2956 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 2957
19d337df
JB		 2958 /* Sync sw blocking state */
2959 tpacpi_rfk_update_swstate_all();
2960
2961 /* Sync hw blocking state last if it is hw-unblocked */
2962 if (wlsw == TPACPI_RFK_RADIO_ON)
2963 tpacpi_rfk_update_hwblock_state(false);
2964
2965 /* Issue rfkill input event for WLSW switch */
2966 if (!(wlsw < 0)) {
733e27c1
HMH		 2967 mutex_lock(&tpacpi_inputdev_send_mutex);
2968
2969 input_report_switch(tpacpi_inputdev,
19d337df 2970 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 2971 input_sync(tpacpi_inputdev);
2972
2973 mutex_unlock(&tpacpi_inputdev_send_mutex);
2974 }
19d337df
JB		 2975
2976 /*
2977 * this can be unconditional, as we will poll state again
2978 * if userspace uses the notify to read data
2979 */
733e27c1
HMH		 2980 hotkey_radio_sw_notify_change();
2981}
2982
9c0a76e1
HMH		 2983static void hotkey_exit(void)
2984{
2985#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2986 mutex_lock(&hotkey_mutex);
9c0a76e1 2987 hotkey_poll_stop_sync();
db25f16d 2988 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 2989#endif
2990
2991 if (hotkey_dev_attributes)
2992 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2993
4be73005 2994 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 2995 "restoring original HKEY status and mask\n");
2996 /* yes, there is a bitwise or below, we want the
2997 * functions to be called even if one of them fail */
2998 if (((tp_features.hotkey_mask &&
2999 hotkey_mask_set(hotkey_orig_mask)) |
3000 hotkey_status_set(false)) != 0)
0978e012 3001 pr_err("failed to restore hot key mask "
4be73005 3002 "to BIOS defaults\n");
9c0a76e1
HMH		 3003}
3004
de4c8cc7
HMH		 3005static void __init hotkey_unmap(const unsigned int scancode)
3006{
3007 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3008 clear_bit(hotkey_keycode_map[scancode],
3009 tpacpi_inputdev->keybit);
3010 hotkey_keycode_map[scancode] = KEY_RESERVED;
3011 }
3012}
3013
0d922e3b
HMH		 3014/*
3015 * HKEY quirks:
3016 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3017 */
3018
3019#define TPACPI_HK_Q_INIMASK 0x0001
3020
3021static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3022 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3023 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3024 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3025 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3026 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3027 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3028 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3029 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3030 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3031 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3032 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3033 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3034 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3035 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3036 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3037 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3038 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3039 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3040 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3041};
3042
fc6e7568
HMH		 3043typedef u16 tpacpi_keymap_entry_t;
3044typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
d1e14dca 3045
a5763f22 3046static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3047{
0f089147
HMH		 3048 /* Requirements for changing the default keymaps:
3049 *
3050 * 1. Many of the keys are mapped to KEY_RESERVED for very
3051 * good reasons. Do not change them unless you have deep
3052 * knowledge on the IBM and Lenovo ThinkPad firmware for
3053 * the various ThinkPad models. The driver behaves
3054 * differently for KEY_RESERVED: such keys have their
3055 * hot key mask *unset* in mask_recommended, and also
3056 * in the initial hot key mask programmed into the
3057 * firmware at driver load time, which means the firm-
3058 * ware may react very differently if you change them to
3059 * something else;
3060 *
3061 * 2. You must be subscribed to the linux-thinkpad and
3062 * ibm-acpi-devel mailing lists, and you should read the
3063 * list archives since 2007 if you want to change the
3064 * keymaps. This requirement exists so that you will
3065 * know the past history of problems with the thinkpad-
3066 * acpi driver keymaps, and also that you will be
3067 * listening to any bug reports;
3068 *
3069 * 3. Do not send thinkpad-acpi specific patches directly to
3070 * for merging, *ever*. Send them to the linux-acpi
3071 * mailinglist for comments. Merging is to be done only
3072 * through acpi-test and the ACPI maintainer.
3073 *
3074 * If the above is too much to ask, don't change the keymap.
3075 * Ask the thinkpad-acpi maintainer to do it, instead.
3076 */
d1e14dca
HMH		 3077
3078 enum keymap_index {
3079 TPACPI_KEYMAP_IBM_GENERIC = 0,
3080 TPACPI_KEYMAP_LENOVO_GENERIC,
3081 };
3082
3083 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
3084 /* Generic keymap for IBM ThinkPads */
3085 [TPACPI_KEYMAP_IBM_GENERIC] = {
edf0e0e5 3086 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
d1e14dca 3087 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
edf0e0e5
HMH		 3088 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3089 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3090
3091 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3092 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3093 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3094 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3095
0d922e3b 3096 /* brightness: firmware always reacts to them */
e927c08d 3097 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3098 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3099
3100 /* Thinklight: firmware always react to it */
edf0e0e5 3101 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3102
edf0e0e5
HMH		 3103 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3104 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3105
3106 /* Volume: firmware always react to it and reprograms
3107 * the built-in *extra* mixer. Never map it to control
3108 * another mixer by default. */
e927c08d
HMH		 3109 KEY_RESERVED, /* 0x14: VOLUME UP */
3110 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3111 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3112
edf0e0e5 3113 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3114
edf0e0e5
HMH		 3115 /* (assignments unknown, please report if found) */
3116 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3117 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
d1e14dca
HMH		 3118 },
3119
3120 /* Generic keymap for Lenovo ThinkPads */
3121 [TPACPI_KEYMAP_LENOVO_GENERIC] = {
edf0e0e5
HMH		 3122 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3123 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2b754262 3124 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
edf0e0e5 3125 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3126
3127 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3128 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3129 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3130 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3131
de4c8cc7
HMH		 3132 /* These should be enabled --only-- when ACPI video
3133 * is disabled (i.e. in "vendor" mode), and are handled
3134 * in a special way by the init code */
3135 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3136 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3137
edf0e0e5 3138 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3139
edf0e0e5
HMH		 3140 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3141 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3142
3143 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3144 * react to it and reprograms the built-in *extra* mixer.
3145 * Never map it to control another mixer by default.
3146 *
3147 * T60?, T61, R60?, R61: firmware and EC tries to send
3148 * these over the regular keyboard, so these are no-ops,
3149 * but there are still weird bugs re. MUTE, so do not
3150 * change unless you get test reports from all Lenovo
3151 * models. May cause the BIOS to interfere with the
3152 * HDA mixer.
3153 */
e927c08d
HMH		 3154 KEY_RESERVED, /* 0x14: VOLUME UP */
3155 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3156 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3157
edf0e0e5 3158 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3159
33009557
AL		 3160 /* (assignments unknown, please report if found) */
3161 KEY_UNKNOWN, KEY_UNKNOWN,
3162
3163 /*
3164 * The mic mute button only sends 0x1a. It does not
3165 * automatically mute the mic or change the mute light.
3166 */
3167 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */
3168
edf0e0e5
HMH		 3169 /* (assignments unknown, please report if found) */
3170 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
33009557 3171 KEY_UNKNOWN,
d1e14dca 3172 },
edf0e0e5
HMH		 3173 };
3174
d1e14dca
HMH		 3175 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
3176 /* Generic maps (fallback) */
3177 {
3178 .vendor = PCI_VENDOR_ID_IBM,
3179 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3180 .quirks = TPACPI_KEYMAP_IBM_GENERIC,
3181 },
3182 {
3183 .vendor = PCI_VENDOR_ID_LENOVO,
3184 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3185 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
3186 },
3187 };
3188
3189#define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
fc6e7568 3190#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
edf0e0e5 3191
6a38abbf 3192 int res, i;
74941a69 3193 int status;
1b6521dc 3194 int hkeyv;
d89a727a
HMH		 3195 bool radiosw_state = false;
3196 bool tabletsw_state = false;
b86c4722 3197
0d922e3b 3198 unsigned long quirks;
d1e14dca 3199 unsigned long keymap_id;
0d922e3b 3200
56e2c200
HMH		 3201 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3202 "initializing hotkey subdriver\n");
fe08bc4b 3203
6a38abbf 3204 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 3205 BUG_ON(tpacpi_inputdev->open != NULL ||
3206 tpacpi_inputdev->close != NULL);
6a38abbf 3207
e0c7dfe7 3208 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 3209 mutex_init(&hotkey_mutex);
5fba344c 3210
01e88f25 3211#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 3212 mutex_init(&hotkey_thread_data_mutex);
3213#endif
3214
56b6aeb0 3215 /* hotkey not supported on 570 */
d8fd94d9 3216 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 3217
56e2c200
HMH		 3218 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3219 "hotkeys are %s\n",
d8fd94d9 3220 str_supported(tp_features.hotkey));
fe08bc4b 3221
9c0a76e1
HMH		 3222 if (!tp_features.hotkey)
3223 return 1;
a0416420 3224
0d922e3b
HMH		 3225 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3226 ARRAY_SIZE(tpacpi_hotkey_qtable));
3227
d64c81c4
HMH		 3228 tpacpi_disable_brightness_delay();
3229
0d922e3b
HMH		 3230 /* MUST have enough space for all attributes to be added to
3231 * hotkey_dev_attributes */
3232 hotkey_dev_attributes = create_attr_set(
3233 ARRAY_SIZE(hotkey_attributes) + 2,
3234 NULL);
9c0a76e1
HMH		 3235 if (!hotkey_dev_attributes)
3236 return -ENOMEM;
3237 res = add_many_to_attr_set(hotkey_dev_attributes,
3238 hotkey_attributes,
3239 ARRAY_SIZE(hotkey_attributes));
3240 if (res)
3241 goto err_exit;
3242
0d922e3b 3243 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
9c0a76e1
HMH		 3244 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3245 for HKEY interface version 0x100 */
3246 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3247 if ((hkeyv >> 8) != 1) {
0978e012
JP		 3248 pr_err("unknown version of the HKEY interface: 0x%x\n",
3249 hkeyv);
3250 pr_err("please report this to %s\n", TPACPI_MAIL);
9c0a76e1
HMH		 3251 } else {
3252 /*
3253 * MHKV 0x100 in A31, R40, R40e,
3254 * T4x, X31, and later
3255 */
56e2c200
HMH		 3256 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3257 "firmware HKEY interface version: 0x%x\n",
3258 hkeyv);
0d922e3b
HMH		 3259
3260 /* Paranoia check AND init hotkey_all_mask */
3261 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3262 "MHKA", "qd")) {
0978e012 3263 pr_err("missing MHKA handler, "
0d922e3b
HMH		 3264 "please report this to %s\n",
3265 TPACPI_MAIL);
3266 /* Fallback: pre-init for FN+F3,F4,F12 */
3267 hotkey_all_mask = 0x080cU;
3268 } else {
3269 tp_features.hotkey_mask = 1;
3270 }
1b6521dc 3271 }
9c0a76e1 3272 }
56b6aeb0 3273
56e2c200
HMH		 3274 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3275 "hotkey masks are %s\n",
9c0a76e1 3276 str_supported(tp_features.hotkey_mask));
fe08bc4b 3277
0d922e3b
HMH		 3278 /* Init hotkey_all_mask if not initialized yet */
3279 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3280 (quirks & TPACPI_HK_Q_INIMASK))
3281 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
9b010de5 3282
0d922e3b 3283 /* Init hotkey_acpi_mask and hotkey_orig_mask */
9c0a76e1 3284 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 3285 /* hotkey_source_mask *must* be zero for
3286 * the first hotkey_mask_get to return hotkey_orig_mask */
9c0a76e1
HMH		 3287 res = hotkey_mask_get();
3288 if (res)
3289 goto err_exit;
3290
0d922e3b
HMH		 3291 hotkey_orig_mask = hotkey_acpi_mask;
3292 } else {
3293 hotkey_orig_mask = hotkey_all_mask;
3294 hotkey_acpi_mask = hotkey_all_mask;
9c0a76e1 3295 }
74941a69 3296
a73f3091
HMH		 3297#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3298 if (dbg_wlswemul) {
3299 tp_features.hotkey_wlsw = 1;
d89a727a 3300 radiosw_state = !!tpacpi_wlsw_emulstate;
0978e012 3301 pr_info("radio switch emulation enabled\n");
a73f3091
HMH		 3302 } else
3303#endif
9c0a76e1
HMH		 3304 /* Not all thinkpads have a hardware radio switch */
3305 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3306 tp_features.hotkey_wlsw = 1;
d89a727a 3307 radiosw_state = !!status;
0978e012 3308 pr_info("radio switch found; radios are %s\n",
9c0a76e1 3309 enabled(status, 0));
3a872080
HMH		 3310 }
3311 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 3312 res = add_to_attr_set(hotkey_dev_attributes,
3313 &dev_attr_hotkey_radio_sw.attr);
74941a69 3314
9c0a76e1
HMH		 3315 /* For X41t, X60t, X61t Tablets... */
3316 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
3317 tp_features.hotkey_tablet = 1;
d89a727a 3318 tabletsw_state = !!(status & TP_HOTKEY_TABLET_MASK);
0978e012 3319 pr_info("possible tablet mode switch found; "
9c0a76e1 3320 "ThinkPad in %s mode\n",
d89a727a 3321 (tabletsw_state) ? "tablet" : "laptop");
9c0a76e1
HMH		 3322 res = add_to_attr_set(hotkey_dev_attributes,
3323 &dev_attr_hotkey_tablet_mode.attr);
3324 }
6c231bd5 3325
9c0a76e1
HMH		 3326 if (!res)
3327 res = register_attr_set_with_sysfs(
3328 hotkey_dev_attributes,
3329 &tpacpi_pdev->dev.kobj);
3330 if (res)
3331 goto err_exit;
6a38abbf 3332
9c0a76e1 3333 /* Set up key map */
9c0a76e1
HMH		 3334 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3335 GFP_KERNEL);
3336 if (!hotkey_keycode_map) {
0978e012 3337 pr_err("failed to allocate memory for key map\n");
9c0a76e1
HMH		 3338 res = -ENOMEM;
3339 goto err_exit;
3340 }
edf0e0e5 3341
d1e14dca
HMH		 3342 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
3343 ARRAY_SIZE(tpacpi_keymap_qtable));
3344 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
3345 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3346 "using keymap number %lu\n", keymap_id);
3347
3348 memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id],
3349 TPACPI_HOTKEY_MAP_SIZE);
edf0e0e5 3350
792979c8 3351 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3352 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3353 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3354 tpacpi_inputdev->keycode = hotkey_keycode_map;
3355 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3356 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3357 input_set_capability(tpacpi_inputdev, EV_KEY,
3358 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3359 } else {
3360 if (i < sizeof(hotkey_reserved_mask)*8)
3361 hotkey_reserved_mask |= 1 << i;
6a38abbf 3362 }
9c0a76e1 3363 }
6a38abbf 3364
9c0a76e1 3365 if (tp_features.hotkey_wlsw) {
792979c8 3366 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3367 input_report_switch(tpacpi_inputdev,
3368 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3369 }
3370 if (tp_features.hotkey_tablet) {
792979c8 3371 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3372 input_report_switch(tpacpi_inputdev,
3373 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3374 }
5c29d58f 3375
9c0a76e1 3376 /* Do not issue duplicate brightness change events to
77775838
HMH		 3377 * userspace. tpacpi_detect_brightness_capabilities() must have
3378 * been called before this point */
ff413195 3379 if (acpi_video_backlight_support()) {
0978e012
JP		 3380 pr_info("This ThinkPad has standard ACPI backlight "
3381 "brightness control, supported by the ACPI "
3382 "video driver\n");
3383 pr_notice("Disabling thinkpad-acpi brightness events "
3384 "by default...\n");
9c0a76e1 3385
de4c8cc7
HMH		 3386 /* Disable brightness up/down on Lenovo thinkpads when
3387 * ACPI is handling them, otherwise it is plain impossible
3388 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3389 hotkey_reserved_mask |=
3390 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3391 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3392 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3393 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3394 }
ff80f137 3395
230d8cf2 3396#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3397 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3398 & ~hotkey_all_mask
3399 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3400
3401 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3402 "hotkey source mask 0x%08x, polling freq %u\n",
3403 hotkey_source_mask, hotkey_poll_freq);
3404#endif
3405
56e2c200
HMH		 3406 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3407 "enabling firmware HKEY event interface...\n");
2586d566 3408 res = hotkey_status_set(true);
9c0a76e1
HMH		 3409 if (res) {
3410 hotkey_exit();
3411 return res;
3412 }
0d922e3b
HMH		 3413 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3414 | hotkey_driver_mask)
3415 & ~hotkey_source_mask);
9c0a76e1
HMH		 3416 if (res < 0 && res != -ENXIO) {
3417 hotkey_exit();
3418 return res;
3419 }
0d922e3b
HMH		 3420 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3421 & ~hotkey_reserved_mask;
3422 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3423 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3424 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3425
9c0a76e1
HMH		 3426 tpacpi_inputdev->open = &hotkey_inputdev_open;
3427 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3428
db25f16d 3429 hotkey_poll_setup_safe(true);
56b6aeb0 3430
9c0a76e1 3431 return 0;
01e88f25 3432
9c0a76e1
HMH		 3433err_exit:
3434 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3435 hotkey_dev_attributes = NULL;
a0416420 3436
9c0a76e1 3437 return (res < 0)? res : 1;
56b6aeb0
HMH		 3438}
3439
3827e7a3
HMH		 3440static bool hotkey_notify_hotkey(const u32 hkey,
3441 bool *send_acpi_ev,
3442 bool *ignore_acpi_ev)
3443{
3444 /* 0x1000-0x1FFF: key presses */
3445 unsigned int scancode = hkey & 0xfff;
3446 *send_acpi_ev = true;
3447 *ignore_acpi_ev = false;
3448
34a656d2
HMH		 3449 /* HKEY event 0x1001 is scancode 0x00 */
3450 if (scancode > 0 && scancode <= TPACPI_HOTKEY_MAP_LEN) {
3827e7a3
HMH		 3451 scancode--;
3452 if (!(hotkey_source_mask & (1 << scancode))) {
0d922e3b 3453 tpacpi_input_send_key_masked(scancode);
3827e7a3
HMH		 3454 *send_acpi_ev = false;
3455 } else {
3456 *ignore_acpi_ev = true;
3457 }
3458 return true;
3459 }
3460 return false;
3461}
3462
3463static bool hotkey_notify_wakeup(const u32 hkey,
3464 bool *send_acpi_ev,
3465 bool *ignore_acpi_ev)
3466{
3467 /* 0x2000-0x2FFF: Wakeup reason */
3468 *send_acpi_ev = true;
3469 *ignore_acpi_ev = false;
3470
3471 switch (hkey) {
67bcae6e
HMH		 3472 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3473 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3474 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3475 *ignore_acpi_ev = true;
3476 break;
3477
67bcae6e
HMH		 3478 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3479 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3480 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3481 *ignore_acpi_ev = true;
3482 break;
3483
67bcae6e
HMH		 3484 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3485 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
0978e012 3486 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
106b4e66
HMH		 3487 /* how to auto-heal: */
3488 /* 2313: woke up from S3, go to S4/S5 */
3489 /* 2413: woke up from S4, go to S5 */
3490 break;
3491
3827e7a3
HMH		 3492 default:
3493 return false;
3494 }
3495
3496 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
0978e012 3497 pr_info("woke up due to a hot-unplug request...\n");
3827e7a3
HMH		 3498 hotkey_wakeup_reason_notify_change();
3499 }
3500 return true;
3501}
3502
a50245af
HMH		 3503static bool hotkey_notify_dockevent(const u32 hkey,
3504 bool *send_acpi_ev,
3505 bool *ignore_acpi_ev)
3506{
3507 /* 0x4000-0x4FFF: dock-related events */
3508 *send_acpi_ev = true;
3509 *ignore_acpi_ev = false;
3510
3511 switch (hkey) {
3512 case TP_HKEY_EV_UNDOCK_ACK:
3513 /* ACPI undock operation completed after wakeup */
3514 hotkey_autosleep_ack = 1;
3515 pr_info("undocked\n");
3516 hotkey_wakeup_hotunplug_complete_notify_change();
3517 return true;
3518
3519 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
3520 pr_info("docked into hotplug port replicator\n");
3521 return true;
3522 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
3523 pr_info("undocked from hotplug port replicator\n");
3524 return true;
3525
3526 default:
3527 return false;
3528 }
3529}
3530
3827e7a3
HMH		 3531static bool hotkey_notify_usrevent(const u32 hkey,
3532 bool *send_acpi_ev,
3533 bool *ignore_acpi_ev)
3534{
3535 /* 0x5000-0x5FFF: human interface helpers */
3536 *send_acpi_ev = true;
3537 *ignore_acpi_ev = false;
3538
3539 switch (hkey) {
67bcae6e
HMH		 3540 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
3541 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3827e7a3
HMH		 3542 return true;
3543
67bcae6e
HMH		 3544 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
3545 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3827e7a3
HMH		 3546 tpacpi_input_send_tabletsw();
3547 hotkey_tablet_mode_notify_change();
3548 *send_acpi_ev = false;
3549 return true;
3550
67bcae6e
HMH		 3551 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
3552 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
3553 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
176dd985 3554 /* do not propagate these events */
3827e7a3
HMH		 3555 *ignore_acpi_ev = true;
3556 return true;
3557
3558 default:
3559 return false;
3560 }
3561}
3562
9ebd9e83
HMH		 3563static void thermal_dump_all_sensors(void);
3564
2d43f671 3565static bool hotkey_notify_6xxx(const u32 hkey,
106b4e66
HMH		 3566 bool *send_acpi_ev,
3567 bool *ignore_acpi_ev)
3568{
9ebd9e83
HMH		 3569 bool known = true;
3570
2d43f671 3571 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
106b4e66
HMH		 3572 *send_acpi_ev = true;
3573 *ignore_acpi_ev = false;
3574
3575 switch (hkey) {
9ebd9e83 3576 case TP_HKEY_EV_THM_TABLE_CHANGED:
0978e012 3577 pr_info("EC reports that Thermal Table has changed\n");
9ebd9e83
HMH		 3578 /* recommended action: do nothing, we don't have
3579 * Lenovo ATM information */
3580 return true;
67bcae6e 3581 case TP_HKEY_EV_ALARM_BAT_HOT:
0978e012 3582 pr_crit("THERMAL ALARM: battery is too hot!\n");
106b4e66 3583 /* recommended action: warn user through gui */
9ebd9e83 3584 break;
67bcae6e 3585 case TP_HKEY_EV_ALARM_BAT_XHOT:
0978e012 3586 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
106b4e66 3587 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3588 break;
67bcae6e 3589 case TP_HKEY_EV_ALARM_SENSOR_HOT:
0978e012 3590 pr_crit("THERMAL ALARM: "
106b4e66
HMH		 3591 "a sensor reports something is too hot!\n");
3592 /* recommended action: warn user through gui, that */
3593 /* some internal component is too hot */
9ebd9e83 3594 break;
67bcae6e 3595 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
0978e012
JP		 3596 pr_alert("THERMAL EMERGENCY: "
3597 "a sensor reports something is extremely hot!\n");
106b4e66 3598 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3599 break;
6f62bc3e
RH		 3600 case TP_HKEY_EV_AC_CHANGED:
3601 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
3602 * AC status changed; can be triggered by plugging or
3603 * unplugging AC adapter, docking or undocking. */
3604
3605 /* fallthrough */
2d43f671
HMH		 3606
3607 case TP_HKEY_EV_KEY_NUMLOCK:
3608 case TP_HKEY_EV_KEY_FN:
3609 /* key press events, we just ignore them as long as the EC
3610 * is still reporting them in the normal keyboard stream */
3611 *send_acpi_ev = false;
3612 *ignore_acpi_ev = true;
3613 return true;
3614
106b4e66 3615 default:
2d43f671 3616 pr_warn("unknown possible thermal alarm or keyboard event received\n");
9ebd9e83 3617 known = false;
106b4e66 3618 }
9ebd9e83
HMH		 3619
3620 thermal_dump_all_sensors();
3621
3622 return known;
106b4e66
HMH		 3623}
3624
56b6aeb0
HMH		 3625static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3626{
6a38abbf 3627 u32 hkey;
3827e7a3
HMH		 3628 bool send_acpi_ev;
3629 bool ignore_acpi_ev;
3630 bool known_ev;
3eea123d
HMH		 3631
3632 if (event != 0x80) {
0978e012 3633 pr_err("unknown HKEY notification event %d\n", event);
3eea123d 3634 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 3635 acpi_bus_generate_netlink_event(
3636 ibm->acpi->device->pnp.device_class,
e0b36fc5 3637 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3638 event, 0);
3eea123d
HMH		 3639 return;
3640 }
3641
3642 while (1) {
3643 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
0978e012 3644 pr_err("failed to retrieve HKEY event\n");
3eea123d
HMH		 3645 return;
3646 }
3647
3648 if (hkey == 0) {
3649 /* queue empty */
3650 return;
3651 }
3652
3827e7a3
HMH		 3653 send_acpi_ev = true;
3654 ignore_acpi_ev = false;
56b6aeb0 3655
ff80f137
HMH		 3656 switch (hkey >> 12) {
3657 case 1:
3658 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 3659 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3660 &ignore_acpi_ev);
ff80f137 3661 break;
a713b4d7 3662 case 2:
3827e7a3
HMH		 3663 /* 0x2000-0x2FFF: Wakeup reason */
3664 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3665 &ignore_acpi_ev);
a713b4d7
HMH		 3666 break;
3667 case 3:
3827e7a3 3668 /* 0x3000-0x3FFF: bay-related wakeups */
bf8b29c8
HMH		 3669 switch (hkey) {
3670 case TP_HKEY_EV_BAYEJ_ACK:
a713b4d7 3671 hotkey_autosleep_ack = 1;
0978e012 3672 pr_info("bay ejected\n");
50ebec09 3673 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3674 known_ev = true;
bf8b29c8
HMH		 3675 break;
3676 case TP_HKEY_EV_OPTDRV_EJ:
3677 /* FIXME: kick libata if SATA link offline */
3678 known_ev = true;
3679 break;
3680 default:
3827e7a3 3681 known_ev = false;
a713b4d7
HMH		 3682 }
3683 break;
3684 case 4:
a50245af
HMH		 3685 /* 0x4000-0x4FFF: dock-related events */
3686 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev,
3687 &ignore_acpi_ev);
a713b4d7 3688 break;
ff80f137 3689 case 5:
d1edb2b5 3690 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 3691 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3692 &ignore_acpi_ev);
ff80f137 3693 break;
106b4e66 3694 case 6:
2d43f671
HMH		 3695 /* 0x6000-0x6FFF: thermal alarms/notices and
3696 * keyboard events */
3697 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev,
106b4e66
HMH		 3698 &ignore_acpi_ev);
3699 break;
ff80f137
HMH		 3700 case 7:
3701 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 3702 if (tp_features.hotkey_wlsw &&
3703 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 3704 tpacpi_send_radiosw_update();
3b64b51d 3705 send_acpi_ev = 0;
3827e7a3 3706 known_ev = true;
6a38abbf 3707 break;
6a38abbf 3708 }
ff80f137
HMH		 3709 /* fallthrough to default */
3710 default:
3827e7a3 3711 known_ev = false;
3b64b51d 3712 }
3827e7a3 3713 if (!known_ev) {
0978e012
JP		 3714 pr_notice("unhandled HKEY event 0x%04x\n", hkey);
3715 pr_notice("please report the conditions when this "
3716 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 3717 }
ff80f137 3718
3eea123d 3719 /* netlink events */
3e5ce914 3720 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 3721 acpi_bus_generate_netlink_event(
3722 ibm->acpi->device->pnp.device_class,
e0b36fc5 3723 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3724 event, hkey);
3eea123d 3725 }
56b6aeb0
HMH		 3726 }
3727}
3728
fd3c3a42 3729static void hotkey_suspend(void)
a713b4d7
HMH		 3730{
3731 /* Do these on suspend, we get the events on early resume! */
3732 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3733 hotkey_autosleep_ack = 0;
3734}
3735
5c29d58f
HMH		 3736static void hotkey_resume(void)
3737{
d64c81c4
HMH		 3738 tpacpi_disable_brightness_delay();
3739
0d922e3b
HMH		 3740 if (hotkey_status_set(true) < 0 ||
3741 hotkey_mask_set(hotkey_acpi_mask) < 0)
0978e012 3742 pr_err("error while attempting to reset the event "
0d922e3b
HMH		 3743 "firmware interface\n");
3744
733e27c1 3745 tpacpi_send_radiosw_update();
6c231bd5 3746 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 3747 hotkey_wakeup_reason_notify_change();
3748 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 3749 hotkey_poll_setup_safe(false);
5c29d58f
HMH		 3750}
3751
a0416420 3752/* procfs -------------------------------------------------------------- */
887965e6 3753static int hotkey_read(struct seq_file *m)
1da177e4 3754{
ae92bd17 3755 int res, status;
1da177e4 3756
d8fd94d9 3757 if (!tp_features.hotkey) {
887965e6
AD		 3758 seq_printf(m, "status:\t\tnot supported\n");
3759 return 0;
78f81cc4
BD		 3760 }
3761
7646ea88 3762 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3763 return -ERESTARTSYS;
b2c985e7
HMH		 3764 res = hotkey_status_get(&status);
3765 if (!res)
3766 res = hotkey_mask_get();
40ca9fdf 3767 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 3768 if (res)
3769 return res;
1da177e4 3770
887965e6 3771 seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
0d922e3b 3772 if (hotkey_all_mask) {
887965e6
AD		 3773 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
3774 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
1da177e4 3775 } else {
887965e6
AD		 3776 seq_printf(m, "mask:\t\tnot supported\n");
3777 seq_printf(m, "commands:\tenable, disable, reset\n");
1da177e4
LT		 3778 }
3779
887965e6 3780 return 0;
1da177e4
LT		 3781}
3782
406e988b 3783static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 3784{
3785 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b 3786 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
0978e012
JP		 3787 pr_fmt("hotkey enable/disable functionality has been "
3788 "removed from the driver. "
3789 "Hotkeys are always enabled.\n")))
3790 pr_err("Please remove the hotkey=enable module "
3791 "parameter, it is deprecated. "
3792 "Hotkeys are always enabled.\n");
2586d566
HMH		 3793}
3794
78f81cc4 3795static int hotkey_write(char *buf)
1da177e4 3796{
2586d566 3797 int res;
ae92bd17 3798 u32 mask;
1da177e4 3799 char *cmd;
1da177e4 3800
d8fd94d9 3801 if (!tp_features.hotkey)
1da177e4
LT		 3802 return -ENODEV;
3803
7646ea88 3804 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3805 return -ERESTARTSYS;
40ca9fdf 3806
0d922e3b 3807 mask = hotkey_user_mask;
78f81cc4 3808
40ca9fdf 3809 res = 0;
1da177e4
LT		 3810 while ((cmd = next_cmd(&buf))) {
3811 if (strlencmp(cmd, "enable") == 0) {
406e988b 3812 hotkey_enabledisable_warn(1);
1da177e4 3813 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 3814 hotkey_enabledisable_warn(0);
2586d566 3815 res = -EPERM;
1da177e4 3816 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 3817 mask = (hotkey_all_mask | hotkey_source_mask)
3818 & ~hotkey_reserved_mask;
1da177e4
LT		 3819 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
3820 /* mask set */
3821 } else if (sscanf(cmd, "%x", &mask) == 1) {
3822 /* mask set */
40ca9fdf
HMH		 3823 } else {
3824 res = -EINVAL;
3825 goto errexit;
3826 }
1da177e4 3827 }
56e2c200 3828
0d922e3b 3829 if (!res) {
56e2c200
HMH		 3830 tpacpi_disclose_usertask("procfs hotkey",
3831 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 3832 res = hotkey_user_mask_set(mask);
3833 }
1da177e4 3834
40ca9fdf
HMH		 3835errexit:
3836 mutex_unlock(&hotkey_mutex);
3837 return res;
78f81cc4 3838}
1da177e4 3839
1ba90e3a 3840static const struct acpi_device_id ibm_htk_device_ids[] = {
9fbdaeb4
MI		 3841 {TPACPI_ACPI_IBM_HKEY_HID, 0},
3842 {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
1ba90e3a
TR		 3843 {"", 0},
3844};
3845
8d376cd6 3846static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 3847 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 3848 .notify = hotkey_notify,
3849 .handle = &hkey_handle,
3850 .type = ACPI_DEVICE_NOTIFY,
3851};
3852
a5763f22
HMH		 3853static struct ibm_struct hotkey_driver_data = {
3854 .name = "hotkey",
a5763f22
HMH		 3855 .read = hotkey_read,
3856 .write = hotkey_write,
3857 .exit = hotkey_exit,
5c29d58f 3858 .resume = hotkey_resume,
a713b4d7 3859 .suspend = hotkey_suspend,
8d376cd6 3860 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 3861};
3862
56b6aeb0
HMH		 3863/*************************************************************************
3864 * Bluetooth subdriver
3865 */
1da177e4 3866
f74a27d4
HMH		 3867enum {
3868 /* ACPI GBDC/SBDC bits */
3869 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3870 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220 3871 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
08fedfc9 3872 0 = disable, 1 = enable */
153f8220
HMH		 3873};
3874
3875enum {
3876 /* ACPI \BLTH commands */
3877 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3878 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3879 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3880 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3881 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 3882};
3883
bee4cd9b
HMH		 3884#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3885
19d337df 3886static int bluetooth_get_status(void)
07431ec8
HMH		 3887{
3888 int status;
3889
a73f3091
HMH		 3890#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3891 if (dbg_bluetoothemul)
3892 return (tpacpi_bluetooth_emulstate) ?
19d337df 3893 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 3894#endif
3895
07431ec8
HMH		 3896 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3897 return -EIO;
3898
0e74dc26 3899 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 3900 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 3901}
3902
19d337df 3903static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 3904{
3905 int status;
3906
bee4cd9b 3907 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 3908 "will attempt to %s bluetooth\n",
3909 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 3910
a73f3091
HMH		 3911#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3912 if (dbg_bluetoothemul) {
19d337df 3913 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 3914 return 0;
3915 }
3916#endif
3917
19d337df 3918 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 3919 status = TP_ACPI_BLUETOOTH_RADIOSSW
3920 | TP_ACPI_BLUETOOTH_RESUMECTRL;
3921 else
3922 status = 0;
19d337df 3923
07431ec8
HMH		 3924 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3925 return -EIO;
3926
3927 return 0;
3928}
f74a27d4 3929
d3a6ade4
HMH		 3930/* sysfs bluetooth enable ---------------------------------------------- */
3931static ssize_t bluetooth_enable_show(struct device *dev,
3932 struct device_attribute *attr,
3933 char *buf)
3934{
19d337df
JB		 3935 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
3936 attr, buf);
d3a6ade4
HMH		 3937}
3938
3939static ssize_t bluetooth_enable_store(struct device *dev,
3940 struct device_attribute *attr,
3941 const char *buf, size_t count)
3942{
19d337df
JB		 3943 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
3944 attr, buf, count);
d3a6ade4
HMH		 3945}
3946
3947static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 3948 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 3949 bluetooth_enable_show, bluetooth_enable_store);
3950
3951/* --------------------------------------------------------------------- */
3952
3953static struct attribute *bluetooth_attributes[] = {
3954 &dev_attr_bluetooth_enable.attr,
3955 NULL
3956};
3957
3958static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 3959 .attrs = bluetooth_attributes,
3960};
3961
19d337df
JB		 3962static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
3963 .get_status = bluetooth_get_status,
3964 .set_status = bluetooth_set_status,
3965};
0e74dc26 3966
90d9d3c7
HMH		 3967static void bluetooth_shutdown(void)
3968{
3969 /* Order firmware to save current state to NVRAM */
3970 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3971 TP_ACPI_BLTH_SAVE_STATE))
0978e012 3972 pr_notice("failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 3973 else
3974 vdbg_printk(TPACPI_DBG_RFKILL,
1f01358c 3975 "bluetooth state saved to NVRAM\n");
90d9d3c7
HMH		 3976}
3977
07431ec8
HMH		 3978static void bluetooth_exit(void)
3979{
3980 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3981 &bluetooth_attr_group);
19d337df
JB		 3982
3983 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
3984
3985 bluetooth_shutdown();
07431ec8
HMH		 3986}
3987
a5763f22 3988static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 3989{
d3a6ade4 3990 int res;
d6fdd1e9
HMH		 3991 int status = 0;
3992
bee4cd9b
HMH		 3993 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3994 "initializing bluetooth subdriver\n");
fe08bc4b 3995
e0c7dfe7 3996 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 3997
78f81cc4
BD		 3998 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3999 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 4000 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 4001 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4002
bee4cd9b
HMH		 4003 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4004 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4005 str_supported(tp_features.bluetooth),
4006 status);
4007
a73f3091
HMH		 4008#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4009 if (dbg_bluetoothemul) {
4010 tp_features.bluetooth = 1;
0978e012 4011 pr_info("bluetooth switch emulation enabled\n");
a73f3091
HMH		 4012 } else
4013#endif
3a872080
HMH		 4014 if (tp_features.bluetooth &&
4015 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4016 /* no bluetooth hardware present in system */
4017 tp_features.bluetooth = 0;
bee4cd9b 4018 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4019 "bluetooth hardware not installed\n");
4020 }
4021
0e74dc26
HMH		 4022 if (!tp_features.bluetooth)
4023 return 1;
4024
0e74dc26 4025 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4026 &bluetooth_tprfk_ops,
0e74dc26 4027 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4028 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 4029 true);
4030 if (res)
4031 return res;
4032
4033 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4034 &bluetooth_attr_group);
0e74dc26 4035 if (res) {
19d337df 4036 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 4037 return res;
d6fdd1e9 4038 }
fe08bc4b 4039
0e74dc26 4040 return 0;
1da177e4
LT		 4041}
4042
d3a6ade4 4043/* procfs -------------------------------------------------------------- */
887965e6 4044static int bluetooth_read(struct seq_file *m)
1da177e4 4045{
887965e6 4046 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
1da177e4
LT		 4047}
4048
78f81cc4 4049static int bluetooth_write(char *buf)
1da177e4 4050{
19d337df 4051 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4052}
4053
a5763f22
HMH		 4054static struct ibm_struct bluetooth_driver_data = {
4055 .name = "bluetooth",
4056 .read = bluetooth_read,
4057 .write = bluetooth_write,
d3a6ade4 4058 .exit = bluetooth_exit,
90d9d3c7 4059 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4060};
4061
56b6aeb0
HMH		 4062/*************************************************************************
4063 * Wan subdriver
4064 */
4065
f74a27d4
HMH		 4066enum {
4067 /* ACPI GWAN/SWAN bits */
4068 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4069 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220 4070 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
08fedfc9 4071 0 = disable, 1 = enable */
f74a27d4
HMH		 4072};
4073
bee4cd9b
HMH		 4074#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4075
19d337df 4076static int wan_get_status(void)
07431ec8
HMH		 4077{
4078 int status;
4079
a73f3091
HMH		 4080#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4081 if (dbg_wwanemul)
4082 return (tpacpi_wwan_emulstate) ?
19d337df 4083 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4084#endif
4085
07431ec8
HMH		 4086 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4087 return -EIO;
4088
0e74dc26 4089 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4090 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4091}
4092
19d337df 4093static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4094{
4095 int status;
4096
bee4cd9b 4097 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4098 "will attempt to %s wwan\n",
4099 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4100
a73f3091
HMH		 4101#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4102 if (dbg_wwanemul) {
19d337df 4103 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4104 return 0;
4105 }
4106#endif
4107
19d337df 4108 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4109 status = TP_ACPI_WANCARD_RADIOSSW
4110 | TP_ACPI_WANCARD_RESUMECTRL;
4111 else
4112 status = 0;
19d337df 4113
07431ec8
HMH		 4114 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4115 return -EIO;
4116
4117 return 0;
4118}
f74a27d4 4119
d3a6ade4
HMH		 4120/* sysfs wan enable ---------------------------------------------------- */
4121static ssize_t wan_enable_show(struct device *dev,
4122 struct device_attribute *attr,
4123 char *buf)
4124{
19d337df
JB		 4125 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4126 attr, buf);
d3a6ade4
HMH		 4127}
4128
4129static ssize_t wan_enable_store(struct device *dev,
4130 struct device_attribute *attr,
4131 const char *buf, size_t count)
4132{
19d337df
JB		 4133 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4134 attr, buf, count);
d3a6ade4
HMH		 4135}
4136
4137static struct device_attribute dev_attr_wan_enable =
cc4c24e1 4138 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 4139 wan_enable_show, wan_enable_store);
4140
4141/* --------------------------------------------------------------------- */
4142
4143static struct attribute *wan_attributes[] = {
4144 &dev_attr_wan_enable.attr,
4145 NULL
4146};
4147
4148static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 4149 .attrs = wan_attributes,
4150};
4151
19d337df
JB		 4152static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4153 .get_status = wan_get_status,
4154 .set_status = wan_set_status,
4155};
0e74dc26 4156
90d9d3c7
HMH		 4157static void wan_shutdown(void)
4158{
4159 /* Order firmware to save current state to NVRAM */
4160 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4161 TP_ACPI_WGSV_SAVE_STATE))
0978e012 4162 pr_notice("failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4163 else
4164 vdbg_printk(TPACPI_DBG_RFKILL,
4165 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4166}
4167
07431ec8
HMH		 4168static void wan_exit(void)
4169{
4170 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4171 &wan_attr_group);
19d337df
JB		 4172
4173 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4174
4175 wan_shutdown();
07431ec8
HMH		 4176}
4177
a5763f22 4178static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4179{
d3a6ade4 4180 int res;
d6fdd1e9
HMH		 4181 int status = 0;
4182
bee4cd9b
HMH		 4183 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4184 "initializing wan subdriver\n");
fe08bc4b 4185
e0c7dfe7 4186 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4187
d8fd94d9 4188 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4189 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4190
bee4cd9b
HMH		 4191 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4192 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4193 str_supported(tp_features.wan),
4194 status);
4195
a73f3091
HMH		 4196#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4197 if (dbg_wwanemul) {
4198 tp_features.wan = 1;
0978e012 4199 pr_info("wwan switch emulation enabled\n");
a73f3091
HMH		 4200 } else
4201#endif
3a872080
HMH		 4202 if (tp_features.wan &&
4203 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4204 /* no wan hardware present in system */
4205 tp_features.wan = 0;
bee4cd9b 4206 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4207 "wan hardware not installed\n");
4208 }
4209
0e74dc26
HMH		 4210 if (!tp_features.wan)
4211 return 1;
4212
0e74dc26 4213 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4214 &wan_tprfk_ops,
0e74dc26 4215 RFKILL_TYPE_WWAN,
bee4cd9b 4216 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 4217 true);
4218 if (res)
4219 return res;
4220
4221 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4222 &wan_attr_group);
4223
0e74dc26 4224 if (res) {
19d337df 4225 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4226 return res;
d6fdd1e9 4227 }
fe08bc4b 4228
0e74dc26 4229 return 0;
42adb53c
JF		 4230}
4231
d3a6ade4 4232/* procfs -------------------------------------------------------------- */
887965e6 4233static int wan_read(struct seq_file *m)
42adb53c 4234{
887965e6 4235 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
42adb53c
JF		 4236}
4237
4238static int wan_write(char *buf)
4239{
19d337df 4240 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4241}
4242
a5763f22
HMH		 4243static struct ibm_struct wan_driver_data = {
4244 .name = "wan",
4245 .read = wan_read,
4246 .write = wan_write,
d3a6ade4 4247 .exit = wan_exit,
90d9d3c7 4248 .shutdown = wan_shutdown,
a5763f22
HMH		 4249};
4250
0045c0aa
HMH		 4251/*************************************************************************
4252 * UWB subdriver
4253 */
4254
4255enum {
4256 /* ACPI GUWB/SUWB bits */
4257 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4258 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4259};
4260
bee4cd9b
HMH		 4261#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4262
19d337df 4263static int uwb_get_status(void)
0045c0aa
HMH		 4264{
4265 int status;
4266
0045c0aa
HMH		 4267#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4268 if (dbg_uwbemul)
4269 return (tpacpi_uwb_emulstate) ?
19d337df 4270 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4271#endif
4272
4273 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4274 return -EIO;
4275
4276 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4277 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4278}
4279
19d337df 4280static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4281{
4282 int status;
4283
bee4cd9b 4284 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4285 "will attempt to %s UWB\n",
4286 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4287
0045c0aa
HMH		 4288#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4289 if (dbg_uwbemul) {
19d337df 4290 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4291 return 0;
4292 }
4293#endif
4294
19d337df
JB		 4295 if (state == TPACPI_RFK_RADIO_ON)
4296 status = TP_ACPI_UWB_RADIOSSW;
4297 else
4298 status = 0;
4299
0045c0aa
HMH		 4300 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4301 return -EIO;
4302
0045c0aa
HMH		 4303 return 0;
4304}
4305
4306/* --------------------------------------------------------------------- */
4307
19d337df
JB		 4308static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4309 .get_status = uwb_get_status,
4310 .set_status = uwb_set_status,
4311};
0045c0aa
HMH		 4312
4313static void uwb_exit(void)
4314{
19d337df 4315 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4316}
4317
4318static int __init uwb_init(struct ibm_init_struct *iibm)
4319{
4320 int res;
4321 int status = 0;
4322
bee4cd9b
HMH		 4323 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4324 "initializing uwb subdriver\n");
0045c0aa
HMH		 4325
4326 TPACPI_ACPIHANDLE_INIT(hkey);
4327
4328 tp_features.uwb = hkey_handle &&
4329 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4330
bee4cd9b
HMH		 4331 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4332 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4333 str_supported(tp_features.uwb),
4334 status);
4335
4336#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4337 if (dbg_uwbemul) {
4338 tp_features.uwb = 1;
0978e012 4339 pr_info("uwb switch emulation enabled\n");
0045c0aa
HMH		 4340 } else
4341#endif
4342 if (tp_features.uwb &&
4343 !(status & TP_ACPI_UWB_HWPRESENT)) {
4344 /* no uwb hardware present in system */
4345 tp_features.uwb = 0;
4346 dbg_printk(TPACPI_DBG_INIT,
4347 "uwb hardware not installed\n");
4348 }
4349
4350 if (!tp_features.uwb)
4351 return 1;
4352
4353 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4354 &uwb_tprfk_ops,
0045c0aa 4355 RFKILL_TYPE_UWB,
bee4cd9b 4356 TPACPI_RFK_UWB_SW_NAME,
19d337df 4357 false);
0045c0aa
HMH		 4358 return res;
4359}
4360
4361static struct ibm_struct uwb_driver_data = {
4362 .name = "uwb",
4363 .exit = uwb_exit,
4364 .flags.experimental = 1,
4365};
4366
56b6aeb0
HMH		 4367/*************************************************************************
4368 * Video subdriver
4369 */
4370
d7c1d17d
HMH		 4371#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4372
f74a27d4
HMH		 4373enum video_access_mode {
4374 TPACPI_VIDEO_NONE = 0,
4375 TPACPI_VIDEO_570, /* 570 */
4376 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4377 TPACPI_VIDEO_NEW, /* all others */
4378};
4379
4380enum { /* video status flags, based on VIDEO_570 */
4381 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4382 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4383 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4384};
4385
4386enum { /* TPACPI_VIDEO_570 constants */
4387 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4388 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4389 * video_status_flags */
4390 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4391 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4392};
4393
9a8e1738
HMH		 4394static enum video_access_mode video_supported;
4395static int video_orig_autosw;
78f81cc4 4396
f74a27d4
HMH		 4397static int video_autosw_get(void);
4398static int video_autosw_set(int enable);
4399
112a6ee0
JP		 4400TPACPI_HANDLE(vid, root,
4401 "\\_SB.PCI.AGP.VGA", /* 570 */
4402 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4403 "\\_SB.PCI0.VID0", /* 770e */
4404 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4405 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4406 "\\_SB.PCI0.AGP.VID", /* all others */
4407 ); /* R30, R31 */
4408
e0c7dfe7 4409TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4410
a5763f22 4411static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4412{
78f81cc4
BD		 4413 int ivga;
4414
fe08bc4b
HMH		 4415 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4416
e0c7dfe7 4417 TPACPI_ACPIHANDLE_INIT(vid);
e28393c0
HMH		 4418 if (tpacpi_is_ibm())
4419 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4420
78f81cc4
BD		 4421 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4422 /* G41, assume IVGA doesn't change */
4423 vid_handle = vid2_handle;
4424
4425 if (!vid_handle)
4426 /* video switching not supported on R30, R31 */
efa27145 4427 video_supported = TPACPI_VIDEO_NONE;
e28393c0
HMH		 4428 else if (tpacpi_is_ibm() &&
4429 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
78f81cc4 4430 /* 570 */
efa27145 4431 video_supported = TPACPI_VIDEO_570;
e28393c0
HMH		 4432 else if (tpacpi_is_ibm() &&
4433 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
78f81cc4 4434 /* 600e/x, 770e, 770x */
efa27145 4435 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4436 else
4437 /* all others */
efa27145 4438 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4439
fe08bc4b
HMH		 4440 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4441 str_supported(video_supported != TPACPI_VIDEO_NONE),
4442 video_supported);
4443
5fba344c 4444 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
1da177e4
LT		 4445}
4446
56b6aeb0
HMH		 4447static void video_exit(void)
4448{
83f34724
HMH		 4449 dbg_printk(TPACPI_DBG_EXIT,
4450 "restoring original video autoswitch mode\n");
4451 if (video_autosw_set(video_orig_autosw))
0978e012 4452 pr_err("error while trying to restore original "
83f34724 4453 "video autoswitch mode\n");
56b6aeb0
HMH		 4454}
4455
83f34724 4456static int video_outputsw_get(void)
1da177e4
LT		 4457{
4458 int status = 0;
4459 int i;
4460
83f34724
HMH		 4461 switch (video_supported) {
4462 case TPACPI_VIDEO_570:
4463 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4464 TP_ACPI_VIDEO_570_PHSCMD))
4465 return -EIO;
4466 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4467 break;
4468 case TPACPI_VIDEO_770:
4469 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4470 return -EIO;
4471 if (i)
4472 status |= TP_ACPI_VIDEO_S_LCD;
4473 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4474 return -EIO;
4475 if (i)
4476 status |= TP_ACPI_VIDEO_S_CRT;
4477 break;
4478 case TPACPI_VIDEO_NEW:
4479 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4480 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4481 return -EIO;
4482 if (i)
4483 status |= TP_ACPI_VIDEO_S_CRT;
4484
4485 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4486 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4487 return -EIO;
4488 if (i)
4489 status |= TP_ACPI_VIDEO_S_LCD;
4490 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4491 return -EIO;
4492 if (i)
4493 status |= TP_ACPI_VIDEO_S_DVI;
4494 break;
4495 default:
4496 return -ENOSYS;
78f81cc4
BD		 4497 }
4498
4499 return status;
4500}
1da177e4 4501
83f34724 4502static int video_outputsw_set(int status)
78f81cc4 4503{
83f34724
HMH		 4504 int autosw;
4505 int res = 0;
4506
4507 switch (video_supported) {
4508 case TPACPI_VIDEO_570:
4509 res = acpi_evalf(NULL, NULL,
4510 "\\_SB.PHS2", "vdd",
4511 TP_ACPI_VIDEO_570_PHS2CMD,
4512 status | TP_ACPI_VIDEO_570_PHS2SET);
4513 break;
4514 case TPACPI_VIDEO_770:
4515 autosw = video_autosw_get();
4516 if (autosw < 0)
4517 return autosw;
1da177e4 4518
83f34724
HMH		 4519 res = video_autosw_set(1);
4520 if (res)
4521 return res;
4522 res = acpi_evalf(vid_handle, NULL,
4523 "ASWT", "vdd", status * 0x100, 0);
4524 if (!autosw && video_autosw_set(autosw)) {
0978e012 4525 pr_err("video auto-switch left enabled due to error\n");
83f34724
HMH		 4526 return -EIO;
4527 }
4528 break;
4529 case TPACPI_VIDEO_NEW:
4530 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 4531 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 4532 break;
4533 default:
4534 return -ENOSYS;
4535 }
1da177e4 4536
83f34724 4537 return (res)? 0 : -EIO;
1da177e4
LT		 4538}
4539
83f34724 4540static int video_autosw_get(void)
78f81cc4 4541{
83f34724 4542 int autosw = 0;
78f81cc4 4543
83f34724
HMH		 4544 switch (video_supported) {
4545 case TPACPI_VIDEO_570:
4546 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4547 return -EIO;
4548 break;
4549 case TPACPI_VIDEO_770:
4550 case TPACPI_VIDEO_NEW:
4551 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4552 return -EIO;
4553 break;
4554 default:
4555 return -ENOSYS;
4556 }
78f81cc4 4557
83f34724 4558 return autosw & 1;
78f81cc4
BD		 4559}
4560
83f34724 4561static int video_autosw_set(int enable)
78f81cc4 4562{
83f34724
HMH		 4563 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4564 return -EIO;
4565 return 0;
78f81cc4
BD		 4566}
4567
83f34724 4568static int video_outputsw_cycle(void)
78f81cc4 4569{
83f34724
HMH		 4570 int autosw = video_autosw_get();
4571 int res;
78f81cc4 4572
83f34724
HMH		 4573 if (autosw < 0)
4574 return autosw;
78f81cc4 4575
83f34724
HMH		 4576 switch (video_supported) {
4577 case TPACPI_VIDEO_570:
4578 res = video_autosw_set(1);
4579 if (res)
4580 return res;
4581 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4582 break;
4583 case TPACPI_VIDEO_770:
4584 case TPACPI_VIDEO_NEW:
4585 res = video_autosw_set(1);
4586 if (res)
4587 return res;
4588 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4589 break;
4590 default:
4591 return -ENOSYS;
4592 }
4593 if (!autosw && video_autosw_set(autosw)) {
0978e012 4594 pr_err("video auto-switch left enabled due to error\n");
83f34724 4595 return -EIO;
78f81cc4
BD		 4596 }
4597
83f34724
HMH		 4598 return (res)? 0 : -EIO;
4599}
4600
4601static int video_expand_toggle(void)
4602{
4603 switch (video_supported) {
4604 case TPACPI_VIDEO_570:
4605 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4606 0 : -EIO;
4607 case TPACPI_VIDEO_770:
4608 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4609 0 : -EIO;
4610 case TPACPI_VIDEO_NEW:
4611 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4612 0 : -EIO;
4613 default:
4614 return -ENOSYS;
4615 }
4616 /* not reached */
78f81cc4
BD		 4617}
4618
887965e6 4619static int video_read(struct seq_file *m)
56b6aeb0 4620{
83f34724 4621 int status, autosw;
56b6aeb0 4622
83f34724 4623 if (video_supported == TPACPI_VIDEO_NONE) {
887965e6
AD		 4624 seq_printf(m, "status:\t\tnot supported\n");
4625 return 0;
56b6aeb0
HMH		 4626 }
4627
b525c06c
HMH		 4628 /* Even reads can crash X.org, so... */
4629 if (!capable(CAP_SYS_ADMIN))
4630 return -EPERM;
4631
83f34724
HMH		 4632 status = video_outputsw_get();
4633 if (status < 0)
4634 return status;
4635
4636 autosw = video_autosw_get();
4637 if (autosw < 0)
4638 return autosw;
4639
887965e6
AD		 4640 seq_printf(m, "status:\t\tsupported\n");
4641 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
4642 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4643 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4644 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
4645 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
4646 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
4647 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
efa27145 4648 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4649 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
4650 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
4651 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
56b6aeb0 4652
887965e6 4653 return 0;
56b6aeb0
HMH		 4654}
4655
78f81cc4 4656static int video_write(char *buf)
1da177e4
LT		 4657{
4658 char *cmd;
4659 int enable, disable, status;
83f34724 4660 int res;
1da177e4 4661
83f34724 4662 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4663 return -ENODEV;
4664
b525c06c
HMH		 4665 /* Even reads can crash X.org, let alone writes... */
4666 if (!capable(CAP_SYS_ADMIN))
4667 return -EPERM;
4668
83f34724
HMH		 4669 enable = 0;
4670 disable = 0;
1da177e4
LT		 4671
4672 while ((cmd = next_cmd(&buf))) {
4673 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4674 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4675 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4676 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4677 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4678 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4679 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4680 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4681 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4682 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4683 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4684 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4685 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4686 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4687 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4688 res = video_autosw_set(1);
4689 if (res)
4690 return res;
1da177e4 4691 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4692 res = video_autosw_set(0);
4693 if (res)
4694 return res;
1da177e4 4695 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4696 res = video_outputsw_cycle();
4697 if (res)
4698 return res;
1da177e4 4699 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4700 res = video_expand_toggle();
4701 if (res)
4702 return res;
1da177e4
LT		 4703 } else
4704 return -EINVAL;
4705 }
4706
4707 if (enable || disable) {
83f34724
HMH		 4708 status = video_outputsw_get();
4709 if (status < 0)
4710 return status;
4711 res = video_outputsw_set((status & ~disable) | enable);
4712 if (res)
4713 return res;
1da177e4
LT		 4714 }
4715
4716 return 0;
4717}
4718
a5763f22
HMH		 4719static struct ibm_struct video_driver_data = {
4720 .name = "video",
4721 .read = video_read,
4722 .write = video_write,
4723 .exit = video_exit,
4724};
4725
d7c1d17d
HMH		 4726#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4727
56b6aeb0
HMH		 4728/*************************************************************************
4729 * Light (thinklight) subdriver
4730 */
1da177e4 4731
e0c7dfe7
HMH		 4732TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4733TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4734
4fa6811b
HMH		 4735static int light_get_status(void)
4736{
4737 int status = 0;
4738
4739 if (tp_features.light_status) {
4740 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4741 return -EIO;
4742 return (!!status);
4743 }
4744
4745 return -ENXIO;
4746}
4747
4748static int light_set_status(int status)
4749{
4750 int rc;
4751
4752 if (tp_features.light) {
4753 if (cmos_handle) {
4754 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4755 (status)?
4756 TP_CMOS_THINKLIGHT_ON :
4757 TP_CMOS_THINKLIGHT_OFF);
4758 } else {
4759 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4760 (status)? 1 : 0);
4761 }
4762 return (rc)? 0 : -EIO;
4763 }
4764
4765 return -ENXIO;
4766}
4767
e306501d
HMH		 4768static void light_set_status_worker(struct work_struct *work)
4769{
4770 struct tpacpi_led_classdev *data =
4771 container_of(work, struct tpacpi_led_classdev, work);
4772
4773 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 4774 light_set_status((data->new_state != TPACPI_LED_OFF));
e306501d
HMH		 4775}
4776
4777static void light_sysfs_set(struct led_classdev *led_cdev,
4778 enum led_brightness brightness)
4779{
4780 struct tpacpi_led_classdev *data =
4781 container_of(led_cdev,
4782 struct tpacpi_led_classdev,
4783 led_classdev);
75bd3bf2
HMH		 4784 data->new_state = (brightness != LED_OFF) ?
4785 TPACPI_LED_ON : TPACPI_LED_OFF;
e0e3c061 4786 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4787}
4788
4789static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4790{
4791 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4792}
4793
4794static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4795 .led_classdev = {
4796 .name = "tpacpi::thinklight",
4797 .brightness_set = &light_sysfs_set,
4798 .brightness_get = &light_sysfs_get,
4799 }
4800};
4801
a5763f22 4802static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4803{
9c0a76e1 4804 int rc;
e306501d 4805
fe08bc4b
HMH		 4806 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4807
e28393c0
HMH		 4808 if (tpacpi_is_ibm()) {
4809 TPACPI_ACPIHANDLE_INIT(ledb);
4810 TPACPI_ACPIHANDLE_INIT(lght);
4811 }
e0c7dfe7 4812 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4813 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4814
78f81cc4 4815 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4816 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4817
d8fd94d9 4818 if (tp_features.light)
78f81cc4
BD		 4819 /* light status not supported on
4820 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4821 tp_features.light_status =
4822 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4823
9c0a76e1
HMH		 4824 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4825 str_supported(tp_features.light),
4826 str_supported(tp_features.light_status));
fe08bc4b 4827
9c0a76e1
HMH		 4828 if (!tp_features.light)
4829 return 1;
4830
4831 rc = led_classdev_register(&tpacpi_pdev->dev,
4832 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4833
4834 if (rc < 0) {
4835 tp_features.light = 0;
4836 tp_features.light_status = 0;
9c0a76e1
HMH		 4837 } else {
4838 rc = 0;
e306501d 4839 }
9c0a76e1 4840
e306501d
HMH		 4841 return rc;
4842}
4843
4844static void light_exit(void)
4845{
4846 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
6d394e19 4847 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4848}
4849
887965e6 4850static int light_read(struct seq_file *m)
1da177e4 4851{
4fa6811b 4852 int status;
1da177e4 4853
d8fd94d9 4854 if (!tp_features.light) {
887965e6 4855 seq_printf(m, "status:\t\tnot supported\n");
d8fd94d9 4856 } else if (!tp_features.light_status) {
887965e6
AD		 4857 seq_printf(m, "status:\t\tunknown\n");
4858 seq_printf(m, "commands:\ton, off\n");
78f81cc4 4859 } else {
4fa6811b
HMH		 4860 status = light_get_status();
4861 if (status < 0)
4862 return status;
887965e6
AD		 4863 seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
4864 seq_printf(m, "commands:\ton, off\n");
78f81cc4 4865 }
1da177e4 4866
887965e6 4867 return 0;
1da177e4
LT		 4868}
4869
78f81cc4 4870static int light_write(char *buf)
1da177e4 4871{
1da177e4 4872 char *cmd;
4fa6811b 4873 int newstatus = 0;
78f81cc4 4874
d8fd94d9 4875 if (!tp_features.light)
78f81cc4
BD		 4876 return -ENODEV;
4877
1da177e4
LT		 4878 while ((cmd = next_cmd(&buf))) {
4879 if (strlencmp(cmd, "on") == 0) {
4fa6811b 4880 newstatus = 1;
1da177e4 4881 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 4882 newstatus = 0;
1da177e4
LT		 4883 } else
4884 return -EINVAL;
1da177e4
LT		 4885 }
4886
4fa6811b 4887 return light_set_status(newstatus);
1da177e4
LT		 4888}
4889
a5763f22
HMH		 4890static struct ibm_struct light_driver_data = {
4891 .name = "light",
4892 .read = light_read,
4893 .write = light_write,
e306501d 4894 .exit = light_exit,
a5763f22
HMH		 4895};
4896
56b6aeb0
HMH		 4897/*************************************************************************
4898 * CMOS subdriver
4899 */
4900
b616004c
HMH		 4901/* sysfs cmos_command -------------------------------------------------- */
4902static ssize_t cmos_command_store(struct device *dev,
4903 struct device_attribute *attr,
4904 const char *buf, size_t count)
4905{
4906 unsigned long cmos_cmd;
4907 int res;
4908
4909 if (parse_strtoul(buf, 21, &cmos_cmd))
4910 return -EINVAL;
4911
4912 res = issue_thinkpad_cmos_command(cmos_cmd);
4913 return (res)? res : count;
4914}
4915
4916static struct device_attribute dev_attr_cmos_command =
4917 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4918
4919/* --------------------------------------------------------------------- */
4920
a5763f22 4921static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 4922{
b616004c
HMH		 4923 int res;
4924
fe08bc4b
HMH		 4925 vdbg_printk(TPACPI_DBG_INIT,
4926 "initializing cmos commands subdriver\n");
4927
e0c7dfe7 4928 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 4929
fe08bc4b
HMH		 4930 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4931 str_supported(cmos_handle != NULL));
b616004c
HMH		 4932
4933 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4934 if (res)
4935 return res;
4936
5fba344c
HMH		 4937 return (cmos_handle)? 0 : 1;
4938}
4939
b616004c
HMH		 4940static void cmos_exit(void)
4941{
4942 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4943}
4944
887965e6 4945static int cmos_read(struct seq_file *m)
1da177e4 4946{
78f81cc4
BD		 4947 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4948 R30, R31, T20-22, X20-21 */
1da177e4 4949 if (!cmos_handle)
887965e6 4950 seq_printf(m, "status:\t\tnot supported\n");
1da177e4 4951 else {
887965e6
AD		 4952 seq_printf(m, "status:\t\tsupported\n");
4953 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 4954 }
4955
887965e6 4956 return 0;
1da177e4
LT		 4957}
4958
78f81cc4 4959static int cmos_write(char *buf)
1da177e4
LT		 4960{
4961 char *cmd;
c9bea99c 4962 int cmos_cmd, res;
1da177e4
LT		 4963
4964 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 4965 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4966 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 4967 /* cmos_cmd set */
4968 } else
4969 return -EINVAL;
4970
c9bea99c
HMH		 4971 res = issue_thinkpad_cmos_command(cmos_cmd);
4972 if (res)
4973 return res;
1da177e4
LT		 4974 }
4975
4976 return 0;
78f81cc4
BD		 4977}
4978
a5763f22
HMH		 4979static struct ibm_struct cmos_driver_data = {
4980 .name = "cmos",
4981 .read = cmos_read,
4982 .write = cmos_write,
b616004c 4983 .exit = cmos_exit,
a5763f22 4984};
56b6aeb0
HMH		 4985
4986/*************************************************************************
4987 * LED subdriver
4988 */
4989
f74a27d4
HMH		 4990enum led_access_mode {
4991 TPACPI_LED_NONE = 0,
4992 TPACPI_LED_570, /* 570 */
4993 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4994 TPACPI_LED_NEW, /* all others */
4995};
4996
4997enum { /* For TPACPI_LED_OLD */
4998 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4999 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
5000 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
5001};
5002
9a8e1738 5003static enum led_access_mode led_supported;
78f81cc4 5004
2cbb5c8f 5005static acpi_handle led_handle;
56b6aeb0 5006
f21179a4 5007#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 5008static struct tpacpi_led_classdev *tpacpi_leds;
5009static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 5010static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 5011 /* there's a limit of 19 chars + NULL before 2.6.26 */
5012 "tpacpi::power",
5013 "tpacpi:orange:batt",
5014 "tpacpi:green:batt",
5015 "tpacpi::dock_active",
5016 "tpacpi::bay_active",
5017 "tpacpi::dock_batt",
5018 "tpacpi::unknown_led",
5019 "tpacpi::standby",
f21179a4
HMH		 5020 "tpacpi::dock_status1",
5021 "tpacpi::dock_status2",
5022 "tpacpi::unknown_led2",
5023 "tpacpi::unknown_led3",
5024 "tpacpi::thinkvantage",
af116101 5025};
f21179a4 5026#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 5027
5028static inline bool tpacpi_is_led_restricted(const unsigned int led)
5029{
5030#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5031 return false;
5032#else
f21179a4 5033 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5034#endif
5035}
af116101 5036
24e45bbe 5037static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5038{
5039 int status;
af116101 5040 enum led_status_t led_s;
4fa6811b
HMH		 5041
5042 switch (led_supported) {
5043 case TPACPI_LED_570:
5044 if (!acpi_evalf(ec_handle,
5045 &status, "GLED", "dd", 1 << led))
5046 return -EIO;
af116101 5047 led_s = (status == 0)?
4fa6811b
HMH		 5048 TPACPI_LED_OFF :
5049 ((status == 1)?
5050 TPACPI_LED_ON :
5051 TPACPI_LED_BLINK);
af116101
HMH		 5052 tpacpi_led_state_cache[led] = led_s;
5053 return led_s;
4fa6811b
HMH		 5054 default:
5055 return -ENXIO;
5056 }
5057
5058 /* not reached */
5059}
5060
24e45bbe
HMH		 5061static int led_set_status(const unsigned int led,
5062 const enum led_status_t ledstatus)
4fa6811b
HMH		 5063{
5064 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5065 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5066 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5067
5068 int rc = 0;
5069
5070 switch (led_supported) {
5071 case TPACPI_LED_570:
24e45bbe 5072 /* 570 */
a4d5effc 5073 if (unlikely(led > 7))
24e45bbe 5074 return -EINVAL;
a4d5effc
HMH		 5075 if (unlikely(tpacpi_is_led_restricted(led)))
5076 return -EPERM;
24e45bbe
HMH		 5077 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5078 (1 << led), led_sled_arg1[ledstatus]))
5079 rc = -EIO;
5080 break;
4fa6811b 5081 case TPACPI_LED_OLD:
24e45bbe 5082 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5083 if (unlikely(led > 7))
24e45bbe 5084 return -EINVAL;
a4d5effc
HMH		 5085 if (unlikely(tpacpi_is_led_restricted(led)))
5086 return -EPERM;
24e45bbe
HMH		 5087 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5088 if (rc >= 0)
5089 rc = ec_write(TPACPI_LED_EC_HLBL,
5090 (ledstatus == TPACPI_LED_BLINK) << led);
5091 if (rc >= 0)
5092 rc = ec_write(TPACPI_LED_EC_HLCL,
5093 (ledstatus != TPACPI_LED_OFF) << led);
5094 break;
4fa6811b 5095 case TPACPI_LED_NEW:
24e45bbe 5096 /* all others */
a4d5effc
HMH		 5097 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5098 return -EINVAL;
5099 if (unlikely(tpacpi_is_led_restricted(led)))
5100 return -EPERM;
24e45bbe
HMH		 5101 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5102 led, led_led_arg1[ledstatus]))
5103 rc = -EIO;
5104 break;
4fa6811b
HMH		 5105 default:
5106 rc = -ENXIO;
5107 }
5108
af116101
HMH		 5109 if (!rc)
5110 tpacpi_led_state_cache[led] = ledstatus;
5111
5112 return rc;
5113}
5114
af116101
HMH		 5115static void led_set_status_worker(struct work_struct *work)
5116{
5117 struct tpacpi_led_classdev *data =
5118 container_of(work, struct tpacpi_led_classdev, work);
5119
5120 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 5121 led_set_status(data->led, data->new_state);
af116101
HMH		 5122}
5123
5124static void led_sysfs_set(struct led_classdev *led_cdev,
5125 enum led_brightness brightness)
5126{
5127 struct tpacpi_led_classdev *data = container_of(led_cdev,
5128 struct tpacpi_led_classdev, led_classdev);
5129
75bd3bf2
HMH		 5130 if (brightness == LED_OFF)
5131 data->new_state = TPACPI_LED_OFF;
5132 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
5133 data->new_state = TPACPI_LED_ON;
5134 else
5135 data->new_state = TPACPI_LED_BLINK;
5136
e0e3c061 5137 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5138}
5139
5140static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5141 unsigned long *delay_on, unsigned long *delay_off)
5142{
5143 struct tpacpi_led_classdev *data = container_of(led_cdev,
5144 struct tpacpi_led_classdev, led_classdev);
5145
5146 /* Can we choose the flash rate? */
5147 if (*delay_on == 0 && *delay_off == 0) {
5148 /* yes. set them to the hardware blink rate (1 Hz) */
5149 *delay_on = 500; /* ms */
5150 *delay_off = 500; /* ms */
5151 } else if ((*delay_on != 500) || (*delay_off != 500))
5152 return -EINVAL;
5153
75bd3bf2 5154 data->new_state = TPACPI_LED_BLINK;
e0e3c061 5155 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5156
5157 return 0;
5158}
5159
5160static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5161{
5162 int rc;
5163
5164 struct tpacpi_led_classdev *data = container_of(led_cdev,
5165 struct tpacpi_led_classdev, led_classdev);
5166
5167 rc = led_get_status(data->led);
5168
5169 if (rc == TPACPI_LED_OFF || rc < 0)
5170 rc = LED_OFF; /* no error handling in led class :( */
5171 else
5172 rc = LED_FULL;
5173
4fa6811b
HMH		 5174 return rc;
5175}
5176
af116101
HMH		 5177static void led_exit(void)
5178{
5179 unsigned int i;
5180
5181 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5182 if (tpacpi_leds[i].led_classdev.name)
5183 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5184 }
5185
e03e389d 5186 flush_workqueue(tpacpi_wq);
af116101 5187 kfree(tpacpi_leds);
af116101
HMH		 5188}
5189
a4d5effc
HMH		 5190static int __init tpacpi_init_led(unsigned int led)
5191{
5192 int rc;
5193
5194 tpacpi_leds[led].led = led;
5195
f21179a4
HMH		 5196 /* LEDs with no name don't get registered */
5197 if (!tpacpi_led_names[led])
5198 return 0;
5199
a4d5effc
HMH		 5200 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
5201 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5202 if (led_supported == TPACPI_LED_570)
5203 tpacpi_leds[led].led_classdev.brightness_get =
5204 &led_sysfs_get;
5205
5206 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5207
5208 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
5209
5210 rc = led_classdev_register(&tpacpi_pdev->dev,
5211 &tpacpi_leds[led].led_classdev);
5212 if (rc < 0)
5213 tpacpi_leds[led].led_classdev.name = NULL;
5214
5215 return rc;
5216}
5217
f21179a4
HMH		 5218static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5219 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5220 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5221 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5222
5223 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5224 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5225 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5226 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5227 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5228 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5229 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5230 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5231
5232 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5233 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5234 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5235 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5236 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5237
5238 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5239 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5240 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5241 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5242
5243 /* (1) - may have excess leds enabled on MSB */
5244
5245 /* Defaults (order matters, keep last, don't reorder!) */
5246 { /* Lenovo */
5247 .vendor = PCI_VENDOR_ID_LENOVO,
5248 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5249 .quirks = 0x1fffU,
5250 },
5251 { /* IBM ThinkPads with no EC version string */
5252 .vendor = PCI_VENDOR_ID_IBM,
5253 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5254 .quirks = 0x00ffU,
5255 },
5256 { /* IBM ThinkPads with EC version string */
5257 .vendor = PCI_VENDOR_ID_IBM,
5258 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5259 .quirks = 0x00bfU,
5260 },
5261};
5262
5263#undef TPACPI_LEDQ_IBM
5264#undef TPACPI_LEDQ_LNV
5265
2cbb5c8f
HMH		 5266static enum led_access_mode __init led_init_detect_mode(void)
5267{
5268 acpi_status status;
5269
5270 if (tpacpi_is_ibm()) {
5271 /* 570 */
5272 status = acpi_get_handle(ec_handle, "SLED", &led_handle);
5273 if (ACPI_SUCCESS(status))
5274 return TPACPI_LED_570;
5275
5276 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5277 status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
5278 if (ACPI_SUCCESS(status))
5279 return TPACPI_LED_OLD;
5280 }
5281
5282 /* most others */
5283 status = acpi_get_handle(ec_handle, "LED", &led_handle);
5284 if (ACPI_SUCCESS(status))
5285 return TPACPI_LED_NEW;
5286
5287 /* R30, R31, and unknown firmwares */
5288 led_handle = NULL;
5289 return TPACPI_LED_NONE;
5290}
5291
a5763f22 5292static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 5293{
af116101
HMH		 5294 unsigned int i;
5295 int rc;
f21179a4 5296 unsigned long useful_leds;
af116101 5297
fe08bc4b
HMH		 5298 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5299
2cbb5c8f 5300 led_supported = led_init_detect_mode();
78f81cc4 5301
fcb44e12
AL		 5302 if (led_supported != TPACPI_LED_NONE) {
5303 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5304 ARRAY_SIZE(led_useful_qtable));
5305
5306 if (!useful_leds) {
5307 led_handle = NULL;
5308 led_supported = TPACPI_LED_NONE;
5309 }
5310 }
5311
fe08bc4b
HMH		 5312 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5313 str_supported(led_supported), led_supported);
5314
f21179a4
HMH		 5315 if (led_supported == TPACPI_LED_NONE)
5316 return 1;
5317
af116101
HMH		 5318 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
5319 GFP_KERNEL);
5320 if (!tpacpi_leds) {
0978e012 5321 pr_err("Out of memory for LED data\n");
af116101
HMH		 5322 return -ENOMEM;
5323 }
5324
5325 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
edf2d778
AL		 5326 tpacpi_leds[i].led = -1;
5327
f21179a4
HMH		 5328 if (!tpacpi_is_led_restricted(i) &&
5329 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 5330 rc = tpacpi_init_led(i);
5331 if (rc < 0) {
5332 led_exit();
5333 return rc;
5334 }
af116101
HMH		 5335 }
5336 }
5337
a4d5effc 5338#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
0978e012
JP		 5339 pr_notice("warning: userspace override of important "
5340 "firmware LEDs is enabled\n");
a4d5effc 5341#endif
f21179a4 5342 return 0;
78f81cc4
BD		 5343}
5344
4fa6811b
HMH		 5345#define str_led_status(s) \
5346 ((s) == TPACPI_LED_OFF ? "off" : \
5347 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4 5348
887965e6 5349static int led_read(struct seq_file *m)
1da177e4 5350{
78f81cc4 5351 if (!led_supported) {
887965e6
AD		 5352 seq_printf(m, "status:\t\tnot supported\n");
5353 return 0;
78f81cc4 5354 }
887965e6 5355 seq_printf(m, "status:\t\tsupported\n");
78f81cc4 5356
efa27145 5357 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5358 /* 570 */
5359 int i, status;
5360 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5361 status = led_get_status(i);
5362 if (status < 0)
78f81cc4 5363 return -EIO;
887965e6 5364 seq_printf(m, "%d:\t\t%s\n",
4fa6811b 5365 i, str_led_status(status));
78f81cc4
BD		 5366 }
5367 }
5368
887965e6 5369 seq_printf(m, "commands:\t"
f21179a4 5370 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4 5371
887965e6 5372 return 0;
1da177e4
LT		 5373}
5374
78f81cc4 5375static int led_write(char *buf)
1da177e4
LT		 5376{
5377 char *cmd;
4fa6811b
HMH		 5378 int led, rc;
5379 enum led_status_t s;
78f81cc4
BD		 5380
5381 if (!led_supported)
5382 return -ENODEV;
1da177e4
LT		 5383
5384 while ((cmd = next_cmd(&buf))) {
edf2d778 5385 if (sscanf(cmd, "%d", &led) != 1)
1da177e4
LT		 5386 return -EINVAL;
5387
edf2d778
AL		 5388 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) ||
5389 tpacpi_leds[led].led < 0)
5390 return -ENODEV;
5391
78f81cc4 5392 if (strstr(cmd, "off")) {
4fa6811b 5393 s = TPACPI_LED_OFF;
1da177e4 5394 } else if (strstr(cmd, "on")) {
4fa6811b 5395 s = TPACPI_LED_ON;
78f81cc4 5396 } else if (strstr(cmd, "blink")) {
4fa6811b 5397 s = TPACPI_LED_BLINK;
78f81cc4 5398 } else {
4fa6811b 5399 return -EINVAL;
78f81cc4 5400 }
4fa6811b
HMH		 5401
5402 rc = led_set_status(led, s);
5403 if (rc < 0)
5404 return rc;
78f81cc4
BD		 5405 }
5406
5407 return 0;
5408}
5409
a5763f22
HMH		 5410static struct ibm_struct led_driver_data = {
5411 .name = "led",
5412 .read = led_read,
5413 .write = led_write,
af116101 5414 .exit = led_exit,
a5763f22
HMH		 5415};
5416
56b6aeb0
HMH		 5417/*************************************************************************
5418 * Beep subdriver
5419 */
5420
e0c7dfe7 5421TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 5422
60201732
HMH		 5423#define TPACPI_BEEP_Q1 0x0001
5424
5425static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5426 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5427 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5428};
5429
a5763f22 5430static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 5431{
60201732
HMH		 5432 unsigned long quirks;
5433
fe08bc4b
HMH		 5434 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5435
e0c7dfe7 5436 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 5437
fe08bc4b
HMH		 5438 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5439 str_supported(beep_handle != NULL));
5440
60201732
HMH		 5441 quirks = tpacpi_check_quirks(beep_quirk_table,
5442 ARRAY_SIZE(beep_quirk_table));
5443
5444 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5445
5fba344c
HMH		 5446 return (beep_handle)? 0 : 1;
5447}
5448
887965e6 5449static int beep_read(struct seq_file *m)
78f81cc4 5450{
78f81cc4 5451 if (!beep_handle)
887965e6 5452 seq_printf(m, "status:\t\tnot supported\n");
78f81cc4 5453 else {
887965e6
AD		 5454 seq_printf(m, "status:\t\tsupported\n");
5455 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
78f81cc4
BD		 5456 }
5457
887965e6 5458 return 0;
78f81cc4
BD		 5459}
5460
5461static int beep_write(char *buf)
5462{
5463 char *cmd;
5464 int beep_cmd;
5465
5466 if (!beep_handle)
5467 return -ENODEV;
5468
5469 while ((cmd = next_cmd(&buf))) {
5470 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5471 beep_cmd >= 0 && beep_cmd <= 17) {
5472 /* beep_cmd set */
5473 } else
5474 return -EINVAL;
60201732
HMH		 5475 if (tp_features.beep_needs_two_args) {
5476 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5477 beep_cmd, 0))
5478 return -EIO;
5479 } else {
5480 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5481 beep_cmd))
5482 return -EIO;
5483 }
78f81cc4
BD		 5484 }
5485
5486 return 0;
5487}
5488
a5763f22
HMH		 5489static struct ibm_struct beep_driver_data = {
5490 .name = "beep",
5491 .read = beep_read,
5492 .write = beep_write,
5493};
5494
56b6aeb0
HMH		 5495/*************************************************************************
5496 * Thermal subdriver
5497 */
78f81cc4 5498
f74a27d4
HMH		 5499enum thermal_access_mode {
5500 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5501 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5502 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5503 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5504 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5505};
5506
5507enum { /* TPACPI_THERMAL_TPEC_* */
5508 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5509 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5510 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 5511
5512 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 5513};
5514
9ebd9e83 5515
f74a27d4
HMH		 5516#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5517struct ibm_thermal_sensors_struct {
5518 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5519};
5520
a26f878a 5521static enum thermal_access_mode thermal_read_mode;
78f81cc4 5522
b21a15f6
HMH		 5523/* idx is zero-based */
5524static int thermal_get_sensor(int idx, s32 *value)
5525{
5526 int t;
5527 s8 tmp;
5528 char tmpi[5];
5529
5530 t = TP_EC_THERMAL_TMP0;
5531
5532 switch (thermal_read_mode) {
5533#if TPACPI_MAX_THERMAL_SENSORS >= 16
5534 case TPACPI_THERMAL_TPEC_16:
5535 if (idx >= 8 && idx <= 15) {
5536 t = TP_EC_THERMAL_TMP8;
5537 idx -= 8;
5538 }
5539 /* fallthrough */
5540#endif
5541 case TPACPI_THERMAL_TPEC_8:
5542 if (idx <= 7) {
5543 if (!acpi_ec_read(t + idx, &tmp))
5544 return -EIO;
5545 *value = tmp * 1000;
5546 return 0;
5547 }
5548 break;
5549
5550 case TPACPI_THERMAL_ACPI_UPDT:
5551 if (idx <= 7) {
5552 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5553 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5554 return -EIO;
5555 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5556 return -EIO;
5557 *value = (t - 2732) * 100;
5558 return 0;
5559 }
5560 break;
5561
5562 case TPACPI_THERMAL_ACPI_TMP07:
5563 if (idx <= 7) {
5564 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5565 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5566 return -EIO;
5567 if (t > 127 || t < -127)
5568 t = TP_EC_THERMAL_TMP_NA;
5569 *value = t * 1000;
5570 return 0;
5571 }
5572 break;
5573
5574 case TPACPI_THERMAL_NONE:
5575 default:
5576 return -ENOSYS;
5577 }
5578
5579 return -EINVAL;
5580}
5581
5582static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5583{
5584 int res, i;
5585 int n;
5586
5587 n = 8;
5588 i = 0;
5589
5590 if (!s)
5591 return -EINVAL;
5592
5593 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5594 n = 16;
5595
35ff8b9f 5596 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5597 res = thermal_get_sensor(i, &s->temp[i]);
5598 if (res)
5599 return res;
5600 }
5601
5602 return n;
5603}
f74a27d4 5604
9ebd9e83
HMH		 5605static void thermal_dump_all_sensors(void)
5606{
5607 int n, i;
5608 struct ibm_thermal_sensors_struct t;
5609
5610 n = thermal_get_sensors(&t);
5611 if (n <= 0)
5612 return;
5613
0978e012 5614 pr_notice("temperatures (Celsius):");
9ebd9e83
HMH		 5615
5616 for (i = 0; i < n; i++) {
5617 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
0978e012 5618 pr_cont(" %d", (int)(t.temp[i] / 1000));
9ebd9e83 5619 else
0978e012 5620 pr_cont(" N/A");
9ebd9e83
HMH		 5621 }
5622
0978e012 5623 pr_cont("\n");
9ebd9e83
HMH		 5624}
5625
2c37aa4e
HMH		 5626/* sysfs temp##_input -------------------------------------------------- */
5627
5628static ssize_t thermal_temp_input_show(struct device *dev,
5629 struct device_attribute *attr,
5630 char *buf)
5631{
5632 struct sensor_device_attribute *sensor_attr =
5633 to_sensor_dev_attr(attr);
5634 int idx = sensor_attr->index;
5635 s32 value;
5636 int res;
5637
5638 res = thermal_get_sensor(idx, &value);
5639 if (res)
5640 return res;
9ebd9e83 5641 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 5642 return -ENXIO;
5643
5644 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5645}
5646
5647#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5648 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5649 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5650
5651static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5652 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5653 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5654 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5655 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5656 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5657 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5658 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5659 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5660 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5661 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5662 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5663 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5664 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5665 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5666 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5667 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5668};
5669
5670#define THERMAL_ATTRS(X) \
5671 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5672
5673static struct attribute *thermal_temp_input_attr[] = {
5674 THERMAL_ATTRS(8),
5675 THERMAL_ATTRS(9),
5676 THERMAL_ATTRS(10),
5677 THERMAL_ATTRS(11),
5678 THERMAL_ATTRS(12),
5679 THERMAL_ATTRS(13),
5680 THERMAL_ATTRS(14),
5681 THERMAL_ATTRS(15),
5682 THERMAL_ATTRS(0),
5683 THERMAL_ATTRS(1),
5684 THERMAL_ATTRS(2),
5685 THERMAL_ATTRS(3),
5686 THERMAL_ATTRS(4),
5687 THERMAL_ATTRS(5),
5688 THERMAL_ATTRS(6),
5689 THERMAL_ATTRS(7),
5690 NULL
5691};
5692
5693static const struct attribute_group thermal_temp_input16_group = {
5694 .attrs = thermal_temp_input_attr
5695};
5696
5697static const struct attribute_group thermal_temp_input8_group = {
5698 .attrs = &thermal_temp_input_attr[8]
5699};
5700
5701#undef THERMAL_SENSOR_ATTR_TEMP
5702#undef THERMAL_ATTRS
5703
5704/* --------------------------------------------------------------------- */
5705
a5763f22 5706static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5707{
60eb0b35
HMH		 5708 u8 t, ta1, ta2;
5709 int i;
5fba344c 5710 int acpi_tmp7;
2c37aa4e 5711 int res;
5fba344c 5712
fe08bc4b
HMH		 5713 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5714
5fba344c 5715 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5716
3d6f99ca 5717 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5718 /*
5719 * Direct EC access mode: sensors at registers
5720 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5721 * non-implemented, thermal sensors return 0x80 when
5722 * not available
5723 */
78f81cc4 5724
60eb0b35
HMH		 5725 ta1 = ta2 = 0;
5726 for (i = 0; i < 8; i++) {
04cc862c 5727 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5728 ta1 |= t;
5729 } else {
5730 ta1 = 0;
5731 break;
5732 }
04cc862c 5733 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5734 ta2 |= t;
5735 } else {
5736 ta1 = 0;
5737 break;
5738 }
5739 }
5740 if (ta1 == 0) {
5741 /* This is sheer paranoia, but we handle it anyway */
5742 if (acpi_tmp7) {
0978e012 5743 pr_err("ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5744 "falling back to ACPI TMPx access "
5745 "mode\n");
efa27145 5746 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5747 } else {
0978e012 5748 pr_err("ThinkPad ACPI EC access misbehaving, "
60eb0b35 5749 "disabling thermal sensors access\n");
efa27145 5750 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5751 }
5752 } else {
5753 thermal_read_mode =
5754 (ta2 != 0) ?
efa27145 5755 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5756 }
5757 } else if (acpi_tmp7) {
e28393c0
HMH		 5758 if (tpacpi_is_ibm() &&
5759 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
a26f878a 5760 /* 600e/x, 770e, 770x */
efa27145 5761 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a 5762 } else {
e28393c0 5763 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
efa27145 5764 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5765 }
5766 } else {
5767 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5768 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5769 }
78f81cc4 5770
fe08bc4b
HMH		 5771 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5772 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5773 thermal_read_mode);
5774
35ff8b9f 5775 switch (thermal_read_mode) {
2c37aa4e 5776 case TPACPI_THERMAL_TPEC_16:
7fd40029 5777 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5778 &thermal_temp_input16_group);
5779 if (res)
5780 return res;
5781 break;
5782 case TPACPI_THERMAL_TPEC_8:
5783 case TPACPI_THERMAL_ACPI_TMP07:
5784 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5785 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5786 &thermal_temp_input8_group);
5787 if (res)
5788 return res;
5789 break;
5790 case TPACPI_THERMAL_NONE:
5791 default:
5792 return 1;
5793 }
5794
5795 return 0;
5796}
5797
5798static void thermal_exit(void)
5799{
35ff8b9f 5800 switch (thermal_read_mode) {
2c37aa4e 5801 case TPACPI_THERMAL_TPEC_16:
7fd40029 5802 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5803 &thermal_temp_input16_group);
5804 break;
5805 case TPACPI_THERMAL_TPEC_8:
5806 case TPACPI_THERMAL_ACPI_TMP07:
5807 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5808 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
f04d5e01 5809 &thermal_temp_input8_group);
2c37aa4e
HMH		 5810 break;
5811 case TPACPI_THERMAL_NONE:
5812 default:
5813 break;
5814 }
78f81cc4
BD		 5815}
5816
887965e6 5817static int thermal_read(struct seq_file *m)
a26f878a 5818{
a26f878a
HMH		 5819 int n, i;
5820 struct ibm_thermal_sensors_struct t;
5821
5822 n = thermal_get_sensors(&t);
5823 if (unlikely(n < 0))
5824 return n;
5825
887965e6 5826 seq_printf(m, "temperatures:\t");
a26f878a
HMH		 5827
5828 if (n > 0) {
5829 for (i = 0; i < (n - 1); i++)
887965e6
AD		 5830 seq_printf(m, "%d ", t.temp[i] / 1000);
5831 seq_printf(m, "%d\n", t.temp[i] / 1000);
a26f878a 5832 } else
887965e6 5833 seq_printf(m, "not supported\n");
78f81cc4 5834
887965e6 5835 return 0;
78f81cc4
BD		 5836}
5837
a5763f22
HMH		 5838static struct ibm_struct thermal_driver_data = {
5839 .name = "thermal",
5840 .read = thermal_read,
2c37aa4e 5841 .exit = thermal_exit,
a5763f22
HMH		 5842};
5843
56b6aeb0
HMH		 5844/*************************************************************************
5845 * Backlight/brightness subdriver
5846 */
5847
f74a27d4
HMH		 5848#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5849
0e501834
HMH		 5850/*
5851 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5852 * CMOS NVRAM byte 0x5E, bits 0-3.
5853 *
5854 * EC HBRV (0x31) has the following layout
5855 * Bit 7: unknown function
5856 * Bit 6: unknown function
5857 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5858 * Bit 4: must be set to zero to avoid problems
5859 * Bit 3-0: backlight brightness level
5860 *
5861 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 5862 *
5863 * WARNING: The X61 has been verified to use HBRV for something else, so
5864 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5865 * testing on the very early *60 Lenovo models...
0e501834
HMH		 5866 */
5867
e11aecf1
HMH		 5868enum {
5869 TP_EC_BACKLIGHT = 0x31,
5870
5871 /* TP_EC_BACKLIGHT bitmasks */
5872 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5873 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5874 TP_EC_BACKLIGHT_MAPSW = 0x20,
5875};
5876
0e501834
HMH		 5877enum tpacpi_brightness_access_mode {
5878 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
5879 TPACPI_BRGHT_MODE_EC, /* EC control */
5880 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
5881 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
5882 TPACPI_BRGHT_MODE_MAX
5883};
5884
94954cc6 5885static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 5886
5887static enum tpacpi_brightness_access_mode brightness_mode =
5888 TPACPI_BRGHT_MODE_MAX;
5889
f74a27d4
HMH		 5890static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5891
b21a15f6 5892static struct mutex brightness_mutex;
56b6aeb0 5893
0e501834
HMH		 5894/* NVRAM brightness access,
5895 * call with brightness_mutex held! */
5896static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 5897{
0e501834 5898 u8 lnvram;
b21a15f6 5899
0e501834
HMH		 5900 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5901 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5902 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
77775838 5903 lnvram &= bright_maxlvl;
0e501834
HMH		 5904
5905 return lnvram;
5906}
5907
5908static void tpacpi_brightness_checkpoint_nvram(void)
5909{
5910 u8 lec = 0;
5911 u8 b_nvram;
5912
5913 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
5914 return;
5915
5916 vdbg_printk(TPACPI_DBG_BRGHT,
5917 "trying to checkpoint backlight level to NVRAM...\n");
5918
5919 if (mutex_lock_killable(&brightness_mutex) < 0)
5920 return;
5921
5922 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5923 goto unlock;
5924 lec &= TP_EC_BACKLIGHT_LVLMSK;
5925 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
5926
5927 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5928 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
5929 /* NVRAM needs update */
5930 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
5931 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
5932 b_nvram |= lec;
5933 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
5934 dbg_printk(TPACPI_DBG_BRGHT,
5935 "updated NVRAM backlight level to %u (0x%02x)\n",
5936 (unsigned int) lec, (unsigned int) b_nvram);
5937 } else
5938 vdbg_printk(TPACPI_DBG_BRGHT,
5939 "NVRAM backlight level already is %u (0x%02x)\n",
5940 (unsigned int) lec, (unsigned int) b_nvram);
5941
5942unlock:
5943 mutex_unlock(&brightness_mutex);
5944}
5945
5946
5947/* call with brightness_mutex held! */
5948static int tpacpi_brightness_get_raw(int *status)
5949{
5950 u8 lec = 0;
5951
5952 switch (brightness_mode) {
5953 case TPACPI_BRGHT_MODE_UCMS_STEP:
5954 *status = tpacpi_brightness_nvram_get();
5955 return 0;
5956 case TPACPI_BRGHT_MODE_EC:
5957 case TPACPI_BRGHT_MODE_ECNVRAM:
5958 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 5959 return -EIO;
0e501834
HMH		 5960 *status = lec;
5961 return 0;
5962 default:
5963 return -ENXIO;
b21a15f6 5964 }
0e501834
HMH		 5965}
5966
5967/* call with brightness_mutex held! */
5968/* do NOT call with illegal backlight level value */
5969static int tpacpi_brightness_set_ec(unsigned int value)
5970{
5971 u8 lec = 0;
5972
5973 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5974 return -EIO;
5975
5976 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
5977 (lec & TP_EC_BACKLIGHT_CMDMSK) |
5978 (value & TP_EC_BACKLIGHT_LVLMSK))))
5979 return -EIO;
5980
5981 return 0;
5982}
5983
5984/* call with brightness_mutex held! */
5985static int tpacpi_brightness_set_ucmsstep(unsigned int value)
5986{
5987 int cmos_cmd, inc;
5988 unsigned int current_value, i;
5989
5990 current_value = tpacpi_brightness_nvram_get();
5991
5992 if (value == current_value)
5993 return 0;
5994
5995 cmos_cmd = (value > current_value) ?
5996 TP_CMOS_BRIGHTNESS_UP :
5997 TP_CMOS_BRIGHTNESS_DOWN;
5998 inc = (value > current_value) ? 1 : -1;
5999
6000 for (i = current_value; i != value; i += inc)
6001 if (issue_thinkpad_cmos_command(cmos_cmd))
6002 return -EIO;
b21a15f6 6003
e11aecf1 6004 return 0;
b21a15f6
HMH		 6005}
6006
6007/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6008static int brightness_set(unsigned int value)
b21a15f6 6009{
0e501834 6010 int res;
b21a15f6 6011
77775838 6012 if (value > bright_maxlvl || value < 0)
b21a15f6
HMH		 6013 return -EINVAL;
6014
0e501834
HMH		 6015 vdbg_printk(TPACPI_DBG_BRGHT,
6016 "set backlight level to %d\n", value);
6017
7646ea88 6018 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6019 if (res < 0)
6020 return res;
6021
0e501834
HMH		 6022 switch (brightness_mode) {
6023 case TPACPI_BRGHT_MODE_EC:
6024 case TPACPI_BRGHT_MODE_ECNVRAM:
6025 res = tpacpi_brightness_set_ec(value);
6026 break;
6027 case TPACPI_BRGHT_MODE_UCMS_STEP:
6028 res = tpacpi_brightness_set_ucmsstep(value);
6029 break;
6030 default:
6031 res = -ENXIO;
b21a15f6
HMH		 6032 }
6033
b21a15f6
HMH		 6034 mutex_unlock(&brightness_mutex);
6035 return res;
6036}
6037
6038/* sysfs backlight class ----------------------------------------------- */
6039
6040static int brightness_update_status(struct backlight_device *bd)
6041{
0e501834 6042 unsigned int level =
b21a15f6
HMH		 6043 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6044 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 6045 bd->props.brightness : 0;
6046
6047 dbg_printk(TPACPI_DBG_BRGHT,
6048 "backlight: attempt to set level to %d\n",
6049 level);
6050
6051 /* it is the backlight class's job (caller) to handle
6052 * EINTR and other errors properly */
6053 return brightness_set(level);
b21a15f6
HMH		 6054}
6055
e11aecf1 6056static int brightness_get(struct backlight_device *bd)
a3f104c0 6057{
e11aecf1 6058 int status, res;
a3f104c0 6059
0e501834 6060 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6061 if (res < 0)
0e501834
HMH		 6062 return 0;
6063
6064 res = tpacpi_brightness_get_raw(&status);
6065
6066 mutex_unlock(&brightness_mutex);
6067
6068 if (res < 0)
6069 return 0;
e11e211a 6070
e11aecf1 6071 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6072}
6073
347a2686
HMH		 6074static void tpacpi_brightness_notify_change(void)
6075{
6076 backlight_force_update(ibm_backlight_device,
6077 BACKLIGHT_UPDATE_HOTKEY);
6078}
6079
acc2472e 6080static const struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6081 .get_brightness = brightness_get,
6082 .update_status = brightness_update_status,
56b6aeb0 6083};
e11e211a 6084
b21a15f6 6085/* --------------------------------------------------------------------- */
e11e211a 6086
122f2672
HMH		 6087/*
6088 * Call _BCL method of video device. On some ThinkPads this will
6089 * switch the firmware to the ACPI brightness control mode.
6090 */
6091
77775838
HMH		 6092static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6093{
6094 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6095 union acpi_object *obj;
46445b6b 6096 struct acpi_device *device, *child;
77775838
HMH		 6097 int rc;
6098
46445b6b
AL		 6099 if (acpi_bus_get_device(handle, &device))
6100 return 0;
6101
6102 rc = 0;
6103 list_for_each_entry(child, &device->children, node) {
6104 acpi_status status = acpi_evaluate_object(child->handle, "_BCL",
6105 NULL, &buffer);
6106 if (ACPI_FAILURE(status))
6107 continue;
6108
77775838
HMH		 6109 obj = (union acpi_object *)buffer.pointer;
6110 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
0978e012 6111 pr_err("Unknown _BCL data, please report this to %s\n",
46445b6b 6112 TPACPI_MAIL);
77775838
HMH		 6113 rc = 0;
6114 } else {
6115 rc = obj->package.count;
6116 }
46445b6b 6117 break;
77775838
HMH		 6118 }
6119
6120 kfree(buffer.pointer);
6121 return rc;
6122}
6123
77775838
HMH		 6124
6125/*
6126 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6127 */
6128static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6129{
122f2672 6130 acpi_handle video_device;
77775838 6131 int bcl_levels = 0;
77775838 6132
46445b6b 6133 tpacpi_acpi_handle_locate("video", NULL, &video_device);
122f2672
HMH		 6134 if (video_device)
6135 bcl_levels = tpacpi_query_bcl_levels(video_device);
77775838 6136
122f2672 6137 tp_features.bright_acpimode = (bcl_levels > 0);
77775838 6138
122f2672 6139 return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
77775838
HMH		 6140}
6141
59fe4fe3
HMH		 6142/*
6143 * These are only useful for models that have only one possibility
6144 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6145 * these quirks.
6146 */
6147#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6148#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6149#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6150
6151static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6152 /* Models with ATI GPUs known to require ECNVRAM mode */
6153 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6154
6da25bf5 6155 /* Models with ATI GPUs that can use ECNVRAM */
7d1894d8 6156 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
59fe4fe3 6157 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
7d1894d8 6158 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
59fe4fe3
HMH		 6159 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6160
6da25bf5 6161 /* Models with Intel Extreme Graphics 2 */
7d1894d8 6162 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
a9f8eacc
HMH		 6163 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6164 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6165
6166 /* Models with Intel GMA900 */
6167 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6168 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6169 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6170};
6171
77775838
HMH		 6172/*
6173 * Returns < 0 for error, otherwise sets tp_features.bright_*
6174 * and bright_maxlvl.
6175 */
6176static void __init tpacpi_detect_brightness_capabilities(void)
6177{
6178 unsigned int b;
6179
6180 vdbg_printk(TPACPI_DBG_INIT,
6181 "detecting firmware brightness interface capabilities\n");
6182
6183 /* we could run a quirks check here (same table used by
6184 * brightness_init) if needed */
6185
6186 /*
6187 * We always attempt to detect acpi support, so as to switch
6188 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6189 * going to publish a backlight interface
6190 */
6191 b = tpacpi_check_std_acpi_brightness_support();
6192 switch (b) {
6193 case 16:
6194 bright_maxlvl = 15;
0978e012 6195 pr_info("detected a 16-level brightness capable ThinkPad\n");
77775838
HMH		 6196 break;
6197 case 8:
6198 case 0:
6199 bright_maxlvl = 7;
0978e012 6200 pr_info("detected a 8-level brightness capable ThinkPad\n");
77775838
HMH		 6201 break;
6202 default:
0978e012 6203 pr_err("Unsupported brightness interface, "
77775838
HMH		 6204 "please contact %s\n", TPACPI_MAIL);
6205 tp_features.bright_unkfw = 1;
6206 bright_maxlvl = b - 1;
6207 }
6208}
6209
a5763f22 6210static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0 6211{
a19a6ee6 6212 struct backlight_properties props;
56b6aeb0 6213 int b;
59fe4fe3 6214 unsigned long quirks;
56b6aeb0 6215
fe08bc4b
HMH		 6216 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6217
f432255e
HMH		 6218 mutex_init(&brightness_mutex);
6219
59fe4fe3
HMH		 6220 quirks = tpacpi_check_quirks(brightness_quirk_table,
6221 ARRAY_SIZE(brightness_quirk_table));
6222
77775838
HMH		 6223 /* tpacpi_detect_brightness_capabilities() must have run already */
6224
6225 /* if it is unknown, we don't handle it: it wouldn't be safe */
6226 if (tp_features.bright_unkfw)
6227 return 1;
2dba1b5d 6228
b5972796 6229 if (!brightness_enable) {
0e501834 6230 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
b5972796
HMH		 6231 "brightness support disabled by "
6232 "module parameter\n");
6233 return 1;
6234 }
6235
217f0963
HMH		 6236 if (acpi_video_backlight_support()) {
6237 if (brightness_enable > 1) {
0978e012
JP		 6238 pr_info("Standard ACPI backlight interface "
6239 "available, not loading native one\n");
217f0963
HMH		 6240 return 1;
6241 } else if (brightness_enable == 1) {
0978e012 6242 pr_warn("Cannot enable backlight brightness support, "
217f0963 6243 "ACPI is already handling it. Refer to the "
0978e012 6244 "acpi_backlight kernel parameter.\n");
217f0963
HMH		 6245 return 1;
6246 }
6247 } else if (tp_features.bright_acpimode && brightness_enable > 1) {
0978e012
JP		 6248 pr_notice("Standard ACPI backlight interface not "
6249 "available, thinkpad_acpi native "
6250 "brightness control enabled\n");
217f0963
HMH		 6251 }
6252
0e501834
HMH		 6253 /*
6254 * Check for module parameter bogosity, note that we
6255 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6256 * able to detect "unspecified"
6257 */
6258 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6259 return -EINVAL;
24d3b774 6260
0e501834
HMH		 6261 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6262 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6263 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 6264 if (quirks & TPACPI_BRGHT_Q_EC)
6265 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6266 else
0e501834 6267 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 6268
0e501834 6269 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 6270 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 6271 brightness_mode);
6272 }
24d3b774 6273
d7880f10 6274 /* Safety */
e28393c0 6275 if (!tpacpi_is_ibm() &&
d7880f10
HMH		 6276 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6277 brightness_mode == TPACPI_BRGHT_MODE_EC))
6278 return -EINVAL;
6279
0e501834 6280 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 6281 return 1;
56b6aeb0 6282
a19a6ee6 6283 memset(&props, 0, sizeof(struct backlight_properties));
bb7ca747 6284 props.type = BACKLIGHT_PLATFORM;
77775838
HMH		 6285 props.max_brightness = bright_maxlvl;
6286 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
a19a6ee6
MG		 6287 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
6288 NULL, NULL,
6289 &ibm_backlight_data,
6290 &props);
56b6aeb0 6291 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 6292 int rc = PTR_ERR(ibm_backlight_device);
6293 ibm_backlight_device = NULL;
0978e012 6294 pr_err("Could not register backlight device\n");
435c47e2 6295 return rc;
56b6aeb0 6296 }
0e501834
HMH		 6297 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6298 "brightness is supported\n");
56b6aeb0 6299
59fe4fe3 6300 if (quirks & TPACPI_BRGHT_Q_ASK) {
0978e012
JP		 6301 pr_notice("brightness: will use unverified default: "
6302 "brightness_mode=%d\n", brightness_mode);
6303 pr_notice("brightness: please report to %s whether it works well "
6304 "or not on your ThinkPad\n", TPACPI_MAIL);
59fe4fe3
HMH		 6305 }
6306
7d9745cf
HMH		 6307 /* Added by mistake in early 2007. Probably useless, but it could
6308 * be working around some unknown firmware problem where the value
6309 * read at startup doesn't match the real hardware state... so leave
6310 * it in place just in case */
56b6aeb0
HMH		 6311 backlight_update_status(ibm_backlight_device);
6312
347a2686
HMH		 6313 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6314 "brightness: registering brightness hotkeys "
6315 "as change notification\n");
6316 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6317 | TP_ACPI_HKEY_BRGHTUP_MASK
3098064d 6318 | TP_ACPI_HKEY_BRGHTDWN_MASK);
56b6aeb0
HMH		 6319 return 0;
6320}
6321
fd3c3a42 6322static void brightness_suspend(void)
0e501834
HMH		 6323{
6324 tpacpi_brightness_checkpoint_nvram();
6325}
6326
6327static void brightness_shutdown(void)
6328{
6329 tpacpi_brightness_checkpoint_nvram();
6330}
6331
56b6aeb0
HMH		 6332static void brightness_exit(void)
6333{
6334 if (ibm_backlight_device) {
0e501834 6335 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 6336 "calling backlight_device_unregister()\n");
56b6aeb0 6337 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 6338 }
0e501834
HMH		 6339
6340 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 6341}
6342
887965e6 6343static int brightness_read(struct seq_file *m)
56b6aeb0 6344{
56b6aeb0
HMH		 6345 int level;
6346
35ff8b9f
HMH		 6347 level = brightness_get(NULL);
6348 if (level < 0) {
887965e6 6349 seq_printf(m, "level:\t\tunreadable\n");
56b6aeb0 6350 } else {
887965e6
AD		 6351 seq_printf(m, "level:\t\t%d\n", level);
6352 seq_printf(m, "commands:\tup, down\n");
77775838
HMH		 6353 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
6354 bright_maxlvl);
56b6aeb0
HMH		 6355 }
6356
887965e6 6357 return 0;
56b6aeb0
HMH		 6358}
6359
8acb0250
HM		 6360static int brightness_write(char *buf)
6361{
6362 int level;
4273af8d 6363 int rc;
1da177e4 6364 char *cmd;
1da177e4 6365
4273af8d
HMH		 6366 level = brightness_get(NULL);
6367 if (level < 0)
6368 return level;
78f81cc4 6369
4273af8d 6370 while ((cmd = next_cmd(&buf))) {
78f81cc4 6371 if (strlencmp(cmd, "up") == 0) {
77775838 6372 if (level < bright_maxlvl)
4273af8d 6373 level++;
78f81cc4 6374 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 6375 if (level > 0)
6376 level--;
6377 } else if (sscanf(cmd, "level %d", &level) == 1 &&
77775838 6378 level >= 0 && level <= bright_maxlvl) {
4273af8d 6379 /* new level set */
78f81cc4
BD		 6380 } else
6381 return -EINVAL;
78f81cc4
BD		 6382 }
6383
0e501834
HMH		 6384 tpacpi_disclose_usertask("procfs brightness",
6385 "set level to %d\n", level);
6386
4273af8d
HMH		 6387 /*
6388 * Now we know what the final level should be, so we try to set it.
6389 * Doing it this way makes the syscall restartable in case of EINTR
6390 */
6391 rc = brightness_set(level);
347a2686
HMH		 6392 if (!rc && ibm_backlight_device)
6393 backlight_force_update(ibm_backlight_device,
6394 BACKLIGHT_UPDATE_SYSFS);
80a8d122 6395 return (rc == -EINTR)? -ERESTARTSYS : rc;
78f81cc4
BD		 6396}
6397
a5763f22
HMH		 6398static struct ibm_struct brightness_driver_data = {
6399 .name = "brightness",
6400 .read = brightness_read,
6401 .write = brightness_write,
6402 .exit = brightness_exit,
0e501834
HMH		 6403 .suspend = brightness_suspend,
6404 .shutdown = brightness_shutdown,
a5763f22
HMH		 6405};
6406
56b6aeb0
HMH		 6407/*************************************************************************
6408 * Volume subdriver
6409 */
fb87a811 6410
329e4e18
HMH		 6411/*
6412 * IBM ThinkPads have a simple volume controller with MUTE gating.
6413 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6414 *
6415 * Since the *61 series (and probably also the later *60 series), Lenovo
6416 * ThinkPads only implement the MUTE gate.
6417 *
6418 * EC register 0x30
6419 * Bit 6: MUTE (1 mutes sound)
6420 * Bit 3-0: Volume
6421 * Other bits should be zero as far as we know.
6422 *
6423 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6424 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6425 * such as bit 7 which is used to detect repeated presses of MUTE,
6426 * and we leave them unchanged.
6427 */
6428
ff850c33
HMH		 6429#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6430
0d204c34
HMH		 6431#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6432#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6433#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6434
cab66613
TI		 6435#if SNDRV_CARDS <= 32
6436#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
6437#else
6438#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
6439#endif
6440static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
0d204c34 6441static char *alsa_id = "ThinkPadEC";
90ab5ee9 6442static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
0d204c34
HMH		 6443
6444struct tpacpi_alsa_data {
6445 struct snd_card *card;
6446 struct snd_ctl_elem_id *ctl_mute_id;
6447 struct snd_ctl_elem_id *ctl_vol_id;
6448};
6449
6450static struct snd_card *alsa_card;
6451
329e4e18
HMH		 6452enum {
6453 TP_EC_AUDIO = 0x30,
6454
6455 /* TP_EC_AUDIO bits */
6456 TP_EC_AUDIO_MUTESW = 6,
6457
6458 /* TP_EC_AUDIO bitmasks */
6459 TP_EC_AUDIO_LVL_MSK = 0x0F,
6460 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
6461
6462 /* Maximum volume */
6463 TP_EC_VOLUME_MAX = 14,
6464};
6465
6466enum tpacpi_volume_access_mode {
6467 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
6468 TPACPI_VOL_MODE_EC, /* Pure EC control */
6469 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
6470 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6471 TPACPI_VOL_MODE_MAX
6472};
6473
a112ceee
HMH		 6474enum tpacpi_volume_capabilities {
6475 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
6476 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
6477 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
6478 TPACPI_VOL_CAP_MAX
6479};
6480
329e4e18
HMH		 6481static enum tpacpi_volume_access_mode volume_mode =
6482 TPACPI_VOL_MODE_MAX;
6483
a112ceee 6484static enum tpacpi_volume_capabilities volume_capabilities;
90ab5ee9 6485static bool volume_control_allowed;
f74a27d4 6486
329e4e18
HMH		 6487/*
6488 * Used to syncronize writers to TP_EC_AUDIO and
6489 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6490 */
6491static struct mutex volume_mutex;
6492
6493static void tpacpi_volume_checkpoint_nvram(void)
78f81cc4 6494{
329e4e18
HMH		 6495 u8 lec = 0;
6496 u8 b_nvram;
a112ceee 6497 u8 ec_mask;
329e4e18
HMH		 6498
6499 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
6500 return;
c7ac6291
HMH		 6501 if (!volume_control_allowed)
6502 return;
329e4e18
HMH		 6503
6504 vdbg_printk(TPACPI_DBG_MIXER,
6505 "trying to checkpoint mixer state to NVRAM...\n");
78f81cc4 6506
a112ceee
HMH		 6507 if (tp_features.mixer_no_level_control)
6508 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
6509 else
6510 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
6511
329e4e18
HMH		 6512 if (mutex_lock_killable(&volume_mutex) < 0)
6513 return;
6514
6515 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
6516 goto unlock;
6517 lec &= ec_mask;
6518 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
6519
6520 if (lec != (b_nvram & ec_mask)) {
6521 /* NVRAM needs update */
6522 b_nvram &= ~ec_mask;
6523 b_nvram |= lec;
6524 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
6525 dbg_printk(TPACPI_DBG_MIXER,
6526 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6527 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4 6528 } else {
329e4e18
HMH		 6529 vdbg_printk(TPACPI_DBG_MIXER,
6530 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6531 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4
BD		 6532 }
6533
329e4e18
HMH		 6534unlock:
6535 mutex_unlock(&volume_mutex);
78f81cc4
BD		 6536}
6537
329e4e18 6538static int volume_get_status_ec(u8 *status)
78f81cc4 6539{
329e4e18 6540 u8 s;
78f81cc4 6541
329e4e18
HMH		 6542 if (!acpi_ec_read(TP_EC_AUDIO, &s))
6543 return -EIO;
78f81cc4 6544
329e4e18 6545 *status = s;
1da177e4 6546
329e4e18 6547 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
35ff8b9f 6548
329e4e18
HMH		 6549 return 0;
6550}
78f81cc4 6551
329e4e18
HMH		 6552static int volume_get_status(u8 *status)
6553{
6554 return volume_get_status_ec(status);
6555}
78f81cc4 6556
329e4e18
HMH		 6557static int volume_set_status_ec(const u8 status)
6558{
6559 if (!acpi_ec_write(TP_EC_AUDIO, status))
6560 return -EIO;
78f81cc4 6561
329e4e18
HMH		 6562 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
6563
6564 return 0;
6565}
6566
6567static int volume_set_status(const u8 status)
6568{
6569 return volume_set_status_ec(status);
6570}
6571
88cc8377
HMH		 6572/* returns < 0 on error, 0 on no change, 1 on change */
6573static int __volume_set_mute_ec(const bool mute)
329e4e18
HMH		 6574{
6575 int rc;
6576 u8 s, n;
6577
6578 if (mutex_lock_killable(&volume_mutex) < 0)
6579 return -EINTR;
6580
6581 rc = volume_get_status_ec(&s);
6582 if (rc)
6583 goto unlock;
6584
6585 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
6586 s & ~TP_EC_AUDIO_MUTESW_MSK;
6587
88cc8377 6588 if (n != s) {
329e4e18 6589 rc = volume_set_status_ec(n);
88cc8377
HMH		 6590 if (!rc)
6591 rc = 1;
6592 }
329e4e18
HMH		 6593
6594unlock:
6595 mutex_unlock(&volume_mutex);
6596 return rc;
6597}
6598
88cc8377
HMH		 6599static int volume_alsa_set_mute(const bool mute)
6600{
6601 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
6602 (mute) ? "" : "un");
6603 return __volume_set_mute_ec(mute);
6604}
6605
329e4e18
HMH		 6606static int volume_set_mute(const bool mute)
6607{
88cc8377
HMH		 6608 int rc;
6609
329e4e18
HMH		 6610 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
6611 (mute) ? "" : "un");
88cc8377
HMH		 6612
6613 rc = __volume_set_mute_ec(mute);
6614 return (rc < 0) ? rc : 0;
329e4e18
HMH		 6615}
6616
88cc8377
HMH		 6617/* returns < 0 on error, 0 on no change, 1 on change */
6618static int __volume_set_volume_ec(const u8 vol)
329e4e18
HMH		 6619{
6620 int rc;
6621 u8 s, n;
6622
6623 if (vol > TP_EC_VOLUME_MAX)
6624 return -EINVAL;
6625
6626 if (mutex_lock_killable(&volume_mutex) < 0)
6627 return -EINTR;
6628
6629 rc = volume_get_status_ec(&s);
6630 if (rc)
6631 goto unlock;
6632
6633 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
6634
88cc8377 6635 if (n != s) {
329e4e18 6636 rc = volume_set_status_ec(n);
88cc8377
HMH		 6637 if (!rc)
6638 rc = 1;
6639 }
329e4e18
HMH		 6640
6641unlock:
6642 mutex_unlock(&volume_mutex);
6643 return rc;
6644}
6645
88cc8377 6646static int volume_alsa_set_volume(const u8 vol)
329e4e18
HMH		 6647{
6648 dbg_printk(TPACPI_DBG_MIXER,
88cc8377
HMH		 6649 "ALSA: trying to set volume level to %hu\n", vol);
6650 return __volume_set_volume_ec(vol);
329e4e18
HMH		 6651}
6652
0d204c34
HMH		 6653static void volume_alsa_notify_change(void)
6654{
6655 struct tpacpi_alsa_data *d;
6656
6657 if (alsa_card && alsa_card->private_data) {
6658 d = alsa_card->private_data;
6659 if (d->ctl_mute_id)
6660 snd_ctl_notify(alsa_card,
6661 SNDRV_CTL_EVENT_MASK_VALUE,
6662 d->ctl_mute_id);
6663 if (d->ctl_vol_id)
6664 snd_ctl_notify(alsa_card,
6665 SNDRV_CTL_EVENT_MASK_VALUE,
6666 d->ctl_vol_id);
6667 }
6668}
6669
6670static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
6671 struct snd_ctl_elem_info *uinfo)
6672{
6673 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
6674 uinfo->count = 1;
6675 uinfo->value.integer.min = 0;
6676 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
6677 return 0;
6678}
6679
6680static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
6681 struct snd_ctl_elem_value *ucontrol)
6682{
6683 u8 s;
6684 int rc;
6685
6686 rc = volume_get_status(&s);
6687 if (rc < 0)
6688 return rc;
6689
6690 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
6691 return 0;
6692}
6693
6694static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
6695 struct snd_ctl_elem_value *ucontrol)
6696{
38e11cde
HMH		 6697 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
6698 ucontrol->value.integer.value[0]);
88cc8377 6699 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
0d204c34
HMH		 6700}
6701
6702#define volume_alsa_mute_info snd_ctl_boolean_mono_info
6703
6704static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
6705 struct snd_ctl_elem_value *ucontrol)
6706{
6707 u8 s;
6708 int rc;
6709
6710 rc = volume_get_status(&s);
6711 if (rc < 0)
6712 return rc;
6713
6714 ucontrol->value.integer.value[0] =
6715 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
6716 return 0;
6717}
6718
6719static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
6720 struct snd_ctl_elem_value *ucontrol)
6721{
38e11cde
HMH		 6722 tpacpi_disclose_usertask("ALSA", "%smute\n",
6723 ucontrol->value.integer.value[0] ?
6724 "un" : "");
88cc8377 6725 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
0d204c34
HMH		 6726}
6727
b859f159 6728static struct snd_kcontrol_new volume_alsa_control_vol = {
0d204c34
HMH		 6729 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6730 .name = "Console Playback Volume",
6731 .index = 0,
6732 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6733 .info = volume_alsa_vol_info,
6734 .get = volume_alsa_vol_get,
6735};
6736
b859f159 6737static struct snd_kcontrol_new volume_alsa_control_mute = {
0d204c34
HMH		 6738 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6739 .name = "Console Playback Switch",
6740 .index = 0,
6741 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6742 .info = volume_alsa_mute_info,
6743 .get = volume_alsa_mute_get,
6744};
6745
fd3c3a42 6746static void volume_suspend(void)
329e4e18
HMH		 6747{
6748 tpacpi_volume_checkpoint_nvram();
6749}
6750
0d204c34
HMH		 6751static void volume_resume(void)
6752{
6753 volume_alsa_notify_change();
6754}
6755
329e4e18
HMH		 6756static void volume_shutdown(void)
6757{
6758 tpacpi_volume_checkpoint_nvram();
6759}
6760
6761static void volume_exit(void)
6762{
0d204c34
HMH		 6763 if (alsa_card) {
6764 snd_card_free(alsa_card);
6765 alsa_card = NULL;
6766 }
6767
329e4e18
HMH		 6768 tpacpi_volume_checkpoint_nvram();
6769}
6770
0d204c34
HMH		 6771static int __init volume_create_alsa_mixer(void)
6772{
6773 struct snd_card *card;
6774 struct tpacpi_alsa_data *data;
6775 struct snd_kcontrol *ctl_vol;
6776 struct snd_kcontrol *ctl_mute;
6777 int rc;
6778
89235e55
TI		 6779 rc = snd_card_new(&tpacpi_pdev->dev,
6780 alsa_index, alsa_id, THIS_MODULE,
6781 sizeof(struct tpacpi_alsa_data), &card);
74c75c18 6782 if (rc < 0 || !card) {
0978e012 6783 pr_err("Failed to create ALSA card structures: %d\n", rc);
74c75c18
HMH		 6784 return 1;
6785 }
0d204c34
HMH		 6786
6787 BUG_ON(!card->private_data);
6788 data = card->private_data;
6789 data->card = card;
6790
6791 strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
6792 sizeof(card->driver));
6793 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
6794 sizeof(card->shortname));
6795 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
6796 (thinkpad_id.ec_version_str) ?
6797 thinkpad_id.ec_version_str : "(unknown)");
6798 snprintf(card->longname, sizeof(card->longname),
6799 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
6800 (thinkpad_id.ec_version_str) ?
6801 thinkpad_id.ec_version_str : "unknown");
6802
6803 if (volume_control_allowed) {
6804 volume_alsa_control_vol.put = volume_alsa_vol_put;
6805 volume_alsa_control_vol.access =
6806 SNDRV_CTL_ELEM_ACCESS_READWRITE;
6807
6808 volume_alsa_control_mute.put = volume_alsa_mute_put;
6809 volume_alsa_control_mute.access =
6810 SNDRV_CTL_ELEM_ACCESS_READWRITE;
6811 }
6812
6813 if (!tp_features.mixer_no_level_control) {
6814 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
6815 rc = snd_ctl_add(card, ctl_vol);
6816 if (rc < 0) {
0978e012
JP		 6817 pr_err("Failed to create ALSA volume control: %d\n",
6818 rc);
74c75c18 6819 goto err_exit;
78f81cc4 6820 }
0d204c34
HMH		 6821 data->ctl_vol_id = &ctl_vol->id;
6822 }
78f81cc4 6823
0d204c34
HMH		 6824 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
6825 rc = snd_ctl_add(card, ctl_mute);
6826 if (rc < 0) {
0978e012 6827 pr_err("Failed to create ALSA mute control: %d\n", rc);
74c75c18 6828 goto err_exit;
0d204c34
HMH		 6829 }
6830 data->ctl_mute_id = &ctl_mute->id;
35ff8b9f 6831
0d204c34 6832 rc = snd_card_register(card);
0d204c34 6833 if (rc < 0) {
0978e012 6834 pr_err("Failed to register ALSA card: %d\n", rc);
74c75c18 6835 goto err_exit;
0d204c34
HMH		 6836 }
6837
6838 alsa_card = card;
74c75c18
HMH		 6839 return 0;
6840
6841err_exit:
6842 snd_card_free(card);
6843 return 1;
0d204c34
HMH		 6844}
6845
a112ceee
HMH		 6846#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
6847#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
6848
6849static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
6850 /* Whitelist volume level on all IBM by default */
6851 { .vendor = PCI_VENDOR_ID_IBM,
6852 .bios = TPACPI_MATCH_ANY,
6853 .ec = TPACPI_MATCH_ANY,
6854 .quirks = TPACPI_VOL_Q_LEVEL },
6855
6856 /* Lenovo models with volume control (needs confirmation) */
6857 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
6858 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
6859 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
6860 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
6861 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
6862 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
6863 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
6864
6865 /* Whitelist mute-only on all Lenovo by default */
6866 { .vendor = PCI_VENDOR_ID_LENOVO,
6867 .bios = TPACPI_MATCH_ANY,
6868 .ec = TPACPI_MATCH_ANY,
6869 .quirks = TPACPI_VOL_Q_MUTEONLY }
6870};
6871
329e4e18
HMH		 6872static int __init volume_init(struct ibm_init_struct *iibm)
6873{
a112ceee 6874 unsigned long quirks;
0d204c34 6875 int rc;
a112ceee 6876
329e4e18
HMH		 6877 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
6878
6879 mutex_init(&volume_mutex);
6880
6881 /*
6882 * Check for module parameter bogosity, note that we
6883 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
6884 * able to detect "unspecified"
6885 */
6886 if (volume_mode > TPACPI_VOL_MODE_MAX)
6887 return -EINVAL;
6888
6889 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
0978e012
JP		 6890 pr_err("UCMS step volume mode not implemented, "
6891 "please contact %s\n", TPACPI_MAIL);
329e4e18
HMH		 6892 return 1;
6893 }
6894
a112ceee
HMH		 6895 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
6896 return -EINVAL;
6897
0d204c34
HMH		 6898 /*
6899 * The ALSA mixer is our primary interface.
6900 * When disabled, don't install the subdriver at all
6901 */
6902 if (!alsa_enable) {
6903 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6904 "ALSA mixer disabled by parameter, "
6905 "not loading volume subdriver...\n");
6906 return 1;
6907 }
6908
a112ceee
HMH		 6909 quirks = tpacpi_check_quirks(volume_quirk_table,
6910 ARRAY_SIZE(volume_quirk_table));
6911
6912 switch (volume_capabilities) {
6913 case TPACPI_VOL_CAP_AUTO:
6914 if (quirks & TPACPI_VOL_Q_MUTEONLY)
6915 tp_features.mixer_no_level_control = 1;
6916 else if (quirks & TPACPI_VOL_Q_LEVEL)
6917 tp_features.mixer_no_level_control = 0;
6918 else
6919 return 1; /* no mixer */
6920 break;
6921 case TPACPI_VOL_CAP_VOLMUTE:
6922 tp_features.mixer_no_level_control = 0;
6923 break;
6924 case TPACPI_VOL_CAP_MUTEONLY:
6925 tp_features.mixer_no_level_control = 1;
6926 break;
6927 default:
6928 return 1;
6929 }
6930
6931 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
6932 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6933 "using user-supplied volume_capabilities=%d\n",
6934 volume_capabilities);
6935
329e4e18
HMH		 6936 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
6937 volume_mode == TPACPI_VOL_MODE_MAX) {
6938 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
6939
6940 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6941 "driver auto-selected volume_mode=%d\n",
6942 volume_mode);
6943 } else {
6944 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6945 "using user-supplied volume_mode=%d\n",
6946 volume_mode);
6947 }
6948
6949 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 6950 "mute is supported, volume control is %s\n",
6951 str_supported(!tp_features.mixer_no_level_control));
329e4e18 6952
0d204c34
HMH		 6953 rc = volume_create_alsa_mixer();
6954 if (rc) {
0978e012 6955 pr_err("Could not create the ALSA mixer interface\n");
0d204c34
HMH		 6956 return rc;
6957 }
6958
0978e012 6959 pr_info("Console audio control enabled, mode: %s\n",
c7ac6291
HMH		 6960 (volume_control_allowed) ?
6961 "override (read/write)" :
6962 "monitor (read only)");
6963
0d204c34
HMH		 6964 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6965 "registering volume hotkeys as change notification\n");
6966 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6967 | TP_ACPI_HKEY_VOLUP_MASK
6968 | TP_ACPI_HKEY_VOLDWN_MASK
6969 | TP_ACPI_HKEY_MUTE_MASK);
6970
329e4e18
HMH		 6971 return 0;
6972}
f74a27d4 6973
887965e6 6974static int volume_read(struct seq_file *m)
78f81cc4 6975{
329e4e18 6976 u8 status;
78f81cc4 6977
329e4e18 6978 if (volume_get_status(&status) < 0) {
887965e6 6979 seq_printf(m, "level:\t\tunreadable\n");
78f81cc4 6980 } else {
a112ceee 6981 if (tp_features.mixer_no_level_control)
887965e6 6982 seq_printf(m, "level:\t\tunsupported\n");
a112ceee 6983 else
887965e6 6984 seq_printf(m, "level:\t\t%d\n",
a112ceee
HMH		 6985 status & TP_EC_AUDIO_LVL_MSK);
6986
887965e6 6987 seq_printf(m, "mute:\t\t%s\n",
329e4e18 6988 onoff(status, TP_EC_AUDIO_MUTESW));
a112ceee 6989
c7ac6291 6990 if (volume_control_allowed) {
887965e6 6991 seq_printf(m, "commands:\tunmute, mute\n");
c7ac6291 6992 if (!tp_features.mixer_no_level_control) {
887965e6 6993 seq_printf(m,
c7ac6291 6994 "commands:\tup, down\n");
887965e6 6995 seq_printf(m,
c7ac6291
HMH		 6996 "commands:\tlevel <level>"
6997 " (<level> is 0-%d)\n",
6998 TP_EC_VOLUME_MAX);
6999 }
78f81cc4
BD		 7000 }
7001 }
7002
7003 return 0;
7004}
7005
78f81cc4
BD		 7006static int volume_write(char *buf)
7007{
329e4e18
HMH		 7008 u8 s;
7009 u8 new_level, new_mute;
7010 int l;
78f81cc4 7011 char *cmd;
329e4e18 7012 int rc;
78f81cc4 7013
c7ac6291
HMH		 7014 /*
7015 * We do allow volume control at driver startup, so that the
7016 * user can set initial state through the volume=... parameter hack.
7017 */
7018 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7019 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7020 tp_warned.volume_ctrl_forbidden = 1;
0978e012
JP		 7021 pr_notice("Console audio control in monitor mode, "
7022 "changes are not allowed\n");
7023 pr_notice("Use the volume_control=1 module parameter "
7024 "to enable volume control\n");
c7ac6291
HMH		 7025 }
7026 return -EPERM;
7027 }
7028
329e4e18
HMH		 7029 rc = volume_get_status(&s);
7030 if (rc < 0)
7031 return rc;
78f81cc4 7032
329e4e18
HMH		 7033 new_level = s & TP_EC_AUDIO_LVL_MSK;
7034 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7035
7036 while ((cmd = next_cmd(&buf))) {
a112ceee
HMH		 7037 if (!tp_features.mixer_no_level_control) {
7038 if (strlencmp(cmd, "up") == 0) {
7039 if (new_mute)
7040 new_mute = 0;
7041 else if (new_level < TP_EC_VOLUME_MAX)
7042 new_level++;
7043 continue;
7044 } else if (strlencmp(cmd, "down") == 0) {
7045 if (new_mute)
7046 new_mute = 0;
7047 else if (new_level > 0)
7048 new_level--;
7049 continue;
7050 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7051 l >= 0 && l <= TP_EC_VOLUME_MAX) {
7052 new_level = l;
7053 continue;
7054 }
7055 }
7056 if (strlencmp(cmd, "mute") == 0)
329e4e18 7057 new_mute = TP_EC_AUDIO_MUTESW_MSK;
a112ceee
HMH		 7058 else if (strlencmp(cmd, "unmute") == 0)
7059 new_mute = 0;
7060 else
1da177e4 7061 return -EINVAL;
329e4e18 7062 }
1da177e4 7063
a112ceee
HMH		 7064 if (tp_features.mixer_no_level_control) {
7065 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7066 new_mute ? "" : "un");
7067 rc = volume_set_mute(!!new_mute);
7068 } else {
7069 tpacpi_disclose_usertask("procfs volume",
7070 "%smute and set level to %d\n",
7071 new_mute ? "" : "un", new_level);
7072 rc = volume_set_status(new_mute | new_level);
7073 }
0d204c34 7074 volume_alsa_notify_change();
78f81cc4 7075
329e4e18 7076 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7077}
7078
a5763f22
HMH		 7079static struct ibm_struct volume_driver_data = {
7080 .name = "volume",
7081 .read = volume_read,
7082 .write = volume_write,
329e4e18
HMH		 7083 .exit = volume_exit,
7084 .suspend = volume_suspend,
0d204c34 7085 .resume = volume_resume,
329e4e18 7086 .shutdown = volume_shutdown,
a5763f22 7087};
56b6aeb0 7088
ff850c33
HMH		 7089#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7090
7091#define alsa_card NULL
7092
7093static void inline volume_alsa_notify_change(void)
7094{
7095}
7096
7097static int __init volume_init(struct ibm_init_struct *iibm)
7098{
0978e012 7099 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
ff850c33
HMH		 7100
7101 return 1;
7102}
7103
7104static struct ibm_struct volume_driver_data = {
7105 .name = "volume",
7106};
7107
7108#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7109
56b6aeb0
HMH		 7110/*************************************************************************
7111 * Fan subdriver
7112 */
7113
7114/*
7115 * FAN ACCESS MODES
7116 *
efa27145 7117 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 7118 * ACPI GFAN method: returns fan level
7119 *
efa27145 7120 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 7121 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 7122 *
efa27145 7123 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7124 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7125 *
f51d1a39
HMH		 7126 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7127 * it for writing.
56b6aeb0 7128 *
efa27145 7129 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 7130 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7131 * Supported on almost all ThinkPads
56b6aeb0
HMH		 7132 *
7133 * Fan speed changes of any sort (including those caused by the
7134 * disengaged mode) are usually done slowly by the firmware as the
9ddc5b6f 7135 * maximum amount of fan duty cycle change per second seems to be
56b6aeb0
HMH		 7136 * limited.
7137 *
7138 * Reading is not available if GFAN exists.
7139 * Writing is not available if SFAN exists.
7140 *
7141 * Bits
7142 * 7 automatic mode engaged;
7143 * (default operation mode of the ThinkPad)
7144 * fan level is ignored in this mode.
f51d1a39 7145 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 7146 * not available on all thinkpads. May disable
f51d1a39
HMH		 7147 * the tachometer while the fan controller ramps up
7148 * the speed (which can take up to a few *minutes*).
7149 * Speeds up fan to 100% duty-cycle, which is far above
7150 * the standard RPM levels. It is not impossible that
7151 * it could cause hardware damage.
56b6aeb0
HMH		 7152 * 5-3 unused in some models. Extra bits for fan level
7153 * in others, but still useless as all values above
7154 * 7 map to the same speed as level 7 in these models.
7155 * 2-0 fan level (0..7 usually)
7156 * 0x00 = stop
7157 * 0x07 = max (set when temperatures critical)
7158 * Some ThinkPads may have other levels, see
efa27145 7159 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 7160 *
7161 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
b595076a 7162 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
56b6aeb0
HMH		 7163 * does so, its initial value is meaningless (0x07).
7164 *
7165 * For firmware bugs, refer to:
7166 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7167 *
7168 * ----
7169 *
7170 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7171 * Main fan tachometer reading (in RPM)
7172 *
7173 * This register is present on all ThinkPads with a new-style EC, and
7174 * it is known not to be present on the A21m/e, and T22, as there is
7175 * something else in offset 0x84 according to the ACPI DSDT. Other
7176 * ThinkPads from this same time period (and earlier) probably lack the
7177 * tachometer as well.
7178 *
877d0310 7179 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 7180 * was never fixed by IBM to report the EC firmware version string
7181 * probably support the tachometer (like the early X models), so
7182 * detecting it is quite hard. We need more data to know for sure.
7183 *
7184 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7185 * might result.
7186 *
f51d1a39
HMH		 7187 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7188 * mode.
56b6aeb0
HMH		 7189 *
7190 * For firmware bugs, refer to:
7191 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7192 *
d7377247
HMH		 7193 * ----
7194 *
7195 * ThinkPad EC register 0x31 bit 0 (only on select models)
7196 *
7197 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7198 * show the speed of the main fan. When bit 0 of EC register 0x31
7199 * is one, the tachometer registers show the speed of the auxiliary
7200 * fan.
7201 *
7202 * Fan control seems to affect both fans, regardless of the state
7203 * of this bit.
7204 *
7205 * So far, only the firmware for the X60/X61 non-tablet versions
7206 * seem to support this (firmware TP-7M).
7207 *
efa27145 7208 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 7209 * ThinkPad X31, X40, X41. Not available in the X60.
7210 *
7211 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7212 * high speed. ACPI DSDT seems to map these three speeds to levels
7213 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7214 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7215 *
7216 * The speeds are stored on handles
7217 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7218 *
af901ca1 7219 * There are three default speed sets, accessible as handles:
56b6aeb0
HMH		 7220 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7221 *
7222 * ACPI DSDT switches which set is in use depending on various
7223 * factors.
7224 *
efa27145 7225 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 7226 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7227 * but the ACPI tables just mention level 7.
7228 */
7229
f74a27d4
HMH		 7230enum { /* Fan control constants */
7231 fan_status_offset = 0x2f, /* EC register 0x2f */
7232 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7233 * 0x84 must be read before 0x85 */
d7377247
HMH		 7234 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
7235 bit 0 selects which fan is active */
f74a27d4
HMH		 7236
7237 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
7238 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
7239
7240 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
7241};
7242
7243enum fan_status_access_mode {
7244 TPACPI_FAN_NONE = 0, /* No fan status or control */
7245 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
7246 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7247};
7248
7249enum fan_control_access_mode {
7250 TPACPI_FAN_WR_NONE = 0, /* No fan control */
7251 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
7252 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
7253 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
7254};
7255
7256enum fan_control_commands {
7257 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
7258 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
7259 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
7260 * and also watchdog cmd */
7261};
7262
90ab5ee9 7263static bool fan_control_allowed;
f74a27d4 7264
69ba91cb
HMH		 7265static enum fan_status_access_mode fan_status_access_mode;
7266static enum fan_control_access_mode fan_control_access_mode;
7267static enum fan_control_commands fan_control_commands;
78f81cc4 7268
778b4d74 7269static u8 fan_control_initial_status;
fe98a52c 7270static u8 fan_control_desired_level;
0081b162 7271static u8 fan_control_resume_level;
f74a27d4
HMH		 7272static int fan_watchdog_maxinterval;
7273
7274static struct mutex fan_mutex;
778b4d74 7275
25c68a33 7276static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 7277static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 7278
e0c7dfe7
HMH		 7279TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
7280TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 7281 "\\FSPD", /* 600e/x, 770e, 770x */
7282 ); /* all others */
e0c7dfe7 7283TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 7284 "JFNS", /* 770x-JL */
7285 ); /* all others */
7286
1c2ece75
HMH		 7287/*
7288 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7289 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7290 * be in auto mode (0x80).
7291 *
7292 * This is corrected by any write to HFSP either by the driver, or
7293 * by the firmware.
7294 *
7295 * We assume 0x07 really means auto mode while this quirk is active,
7296 * as this is far more likely than the ThinkPad being in level 7,
7297 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 7298 *
7299 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7300 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 7301 */
7302
7d95a3d5 7303static void fan_quirk1_setup(void)
1c2ece75 7304{
1c2ece75 7305 if (fan_control_initial_status == 0x07) {
0978e012
JP		 7306 pr_notice("fan_init: initial fan status is unknown, "
7307 "assuming it is in auto mode\n");
7d95a3d5 7308 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 7309 }
7310}
7311
7312static void fan_quirk1_handle(u8 *fan_status)
7313{
7314 if (unlikely(tp_features.fan_ctrl_status_undef)) {
7315 if (*fan_status != fan_control_initial_status) {
7316 /* something changed the HFSP regisnter since
7317 * driver init time, so it is not undefined
7318 * anymore */
7319 tp_features.fan_ctrl_status_undef = 0;
7320 } else {
7321 /* Return most likely status. In fact, it
7322 * might be the only possible status */
7323 *fan_status = TP_EC_FAN_AUTO;
7324 }
7325 }
7326}
7327
d7377247
HMH		 7328/* Select main fan on X60/X61, NOOP on others */
7329static bool fan_select_fan1(void)
7330{
7331 if (tp_features.second_fan) {
7332 u8 val;
7333
7334 if (ec_read(fan_select_offset, &val) < 0)
7335 return false;
7336 val &= 0xFEU;
7337 if (ec_write(fan_select_offset, val) < 0)
7338 return false;
7339 }
7340 return true;
7341}
7342
7343/* Select secondary fan on X60/X61 */
7344static bool fan_select_fan2(void)
7345{
7346 u8 val;
7347
7348 if (!tp_features.second_fan)
7349 return false;
7350
7351 if (ec_read(fan_select_offset, &val) < 0)
7352 return false;
7353 val |= 0x01U;
7354 if (ec_write(fan_select_offset, val) < 0)
7355 return false;
7356
7357 return true;
7358}
7359
fe98a52c 7360/*
b21a15f6 7361 * Call with fan_mutex held
fe98a52c 7362 */
b21a15f6 7363static void fan_update_desired_level(u8 status)
fe98a52c 7364{
b21a15f6
HMH		 7365 if ((status &
7366 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7367 if (status > 7)
7368 fan_control_desired_level = 7;
7369 else
7370 fan_control_desired_level = status;
7371 }
7372}
fe98a52c 7373
b21a15f6
HMH		 7374static int fan_get_status(u8 *status)
7375{
7376 u8 s;
fe98a52c 7377
b21a15f6
HMH		 7378 /* TODO:
7379 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 7380
b21a15f6 7381 switch (fan_status_access_mode) {
eceeb437 7382 case TPACPI_FAN_RD_ACPI_GFAN: {
b21a15f6 7383 /* 570, 600e/x, 770e, 770x */
eceeb437 7384 int res;
fe98a52c 7385
eceeb437 7386 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
b21a15f6 7387 return -EIO;
fe98a52c 7388
b21a15f6 7389 if (likely(status))
eceeb437 7390 *status = res & 0x07;
fe98a52c 7391
b21a15f6 7392 break;
eceeb437 7393 }
b21a15f6
HMH		 7394 case TPACPI_FAN_RD_TPEC:
7395 /* all except 570, 600e/x, 770e, 770x */
7396 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
7397 return -EIO;
7398
1c2ece75 7399 if (likely(status)) {
b21a15f6 7400 *status = s;
1c2ece75
HMH		 7401 fan_quirk1_handle(status);
7402 }
fe98a52c 7403
fe98a52c 7404 break;
b21a15f6 7405
fe98a52c 7406 default:
b21a15f6 7407 return -ENXIO;
fe98a52c
HMH		 7408 }
7409
b21a15f6
HMH		 7410 return 0;
7411}
fe98a52c 7412
b21a15f6
HMH		 7413static int fan_get_status_safe(u8 *status)
7414{
7415 int rc;
7416 u8 s;
fe98a52c 7417
7646ea88 7418 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 7419 return -ERESTARTSYS;
7420 rc = fan_get_status(&s);
7421 if (!rc)
7422 fan_update_desired_level(s);
7423 mutex_unlock(&fan_mutex);
fe98a52c 7424
b21a15f6
HMH		 7425 if (status)
7426 *status = s;
fe98a52c 7427
b21a15f6
HMH		 7428 return rc;
7429}
7430
7431static int fan_get_speed(unsigned int *speed)
fe98a52c 7432{
b21a15f6 7433 u8 hi, lo;
fe98a52c 7434
b21a15f6
HMH		 7435 switch (fan_status_access_mode) {
7436 case TPACPI_FAN_RD_TPEC:
7437 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 7438 if (unlikely(!fan_select_fan1()))
7439 return -EIO;
b21a15f6
HMH		 7440 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
7441 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
7442 return -EIO;
fe98a52c 7443
b21a15f6
HMH		 7444 if (likely(speed))
7445 *speed = (hi << 8) | lo;
fe98a52c 7446
b21a15f6 7447 break;
fe98a52c 7448
b21a15f6
HMH		 7449 default:
7450 return -ENXIO;
7451 }
fe98a52c 7452
b21a15f6 7453 return 0;
fe98a52c
HMH		 7454}
7455
d7377247
HMH		 7456static int fan2_get_speed(unsigned int *speed)
7457{
7458 u8 hi, lo;
7459 bool rc;
7460
7461 switch (fan_status_access_mode) {
7462 case TPACPI_FAN_RD_TPEC:
7463 /* all except 570, 600e/x, 770e, 770x */
7464 if (unlikely(!fan_select_fan2()))
7465 return -EIO;
7466 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
7467 !acpi_ec_read(fan_rpm_offset + 1, &hi);
7468 fan_select_fan1(); /* play it safe */
7469 if (rc)
7470 return -EIO;
7471
7472 if (likely(speed))
7473 *speed = (hi << 8) | lo;
7474
7475 break;
7476
7477 default:
7478 return -ENXIO;
7479 }
7480
7481 return 0;
7482}
7483
b21a15f6 7484static int fan_set_level(int level)
fe98a52c 7485{
b21a15f6
HMH		 7486 if (!fan_control_allowed)
7487 return -EPERM;
fe98a52c 7488
b21a15f6
HMH		 7489 switch (fan_control_access_mode) {
7490 case TPACPI_FAN_WR_ACPI_SFAN:
7491 if (level >= 0 && level <= 7) {
7492 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
7493 return -EIO;
7494 } else
7495 return -EINVAL;
7496 break;
fe98a52c 7497
b21a15f6
HMH		 7498 case TPACPI_FAN_WR_ACPI_FANS:
7499 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 7500 if (!(level & TP_EC_FAN_AUTO) &&
7501 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 7502 ((level < 0) || (level > 7)))
7503 return -EINVAL;
fe98a52c 7504
b21a15f6
HMH		 7505 /* safety net should the EC not support AUTO
7506 * or FULLSPEED mode bits and just ignore them */
7507 if (level & TP_EC_FAN_FULLSPEED)
7508 level |= 7; /* safety min speed 7 */
547266e4 7509 else if (level & TP_EC_FAN_AUTO)
b21a15f6 7510 level |= 4; /* safety min speed 4 */
fe98a52c 7511
b21a15f6
HMH		 7512 if (!acpi_ec_write(fan_status_offset, level))
7513 return -EIO;
7514 else
7515 tp_features.fan_ctrl_status_undef = 0;
7516 break;
fe98a52c 7517
b21a15f6
HMH		 7518 default:
7519 return -ENXIO;
7520 }
74a60c0f
HMH		 7521
7522 vdbg_printk(TPACPI_DBG_FAN,
7523 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 7524 return 0;
fe98a52c
HMH		 7525}
7526
b21a15f6 7527static int fan_set_level_safe(int level)
fe98a52c 7528{
b21a15f6 7529 int rc;
fe98a52c 7530
b21a15f6
HMH		 7531 if (!fan_control_allowed)
7532 return -EPERM;
fe98a52c 7533
7646ea88 7534 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7535 return -ERESTARTSYS;
fe98a52c 7536
b21a15f6
HMH		 7537 if (level == TPACPI_FAN_LAST_LEVEL)
7538 level = fan_control_desired_level;
fe98a52c 7539
b21a15f6
HMH		 7540 rc = fan_set_level(level);
7541 if (!rc)
7542 fan_update_desired_level(level);
7543
7544 mutex_unlock(&fan_mutex);
7545 return rc;
fe98a52c
HMH		 7546}
7547
b21a15f6 7548static int fan_set_enable(void)
fe98a52c 7549{
b21a15f6
HMH		 7550 u8 s;
7551 int rc;
fe98a52c 7552
ecf2a80a
HMH		 7553 if (!fan_control_allowed)
7554 return -EPERM;
7555
7646ea88 7556 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7557 return -ERESTARTSYS;
fe98a52c 7558
b21a15f6
HMH		 7559 switch (fan_control_access_mode) {
7560 case TPACPI_FAN_WR_ACPI_FANS:
7561 case TPACPI_FAN_WR_TPEC:
7562 rc = fan_get_status(&s);
7563 if (rc < 0)
7564 break;
fe98a52c 7565
b21a15f6
HMH		 7566 /* Don't go out of emergency fan mode */
7567 if (s != 7) {
7568 s &= 0x07;
7569 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
7570 }
fe98a52c 7571
b21a15f6
HMH		 7572 if (!acpi_ec_write(fan_status_offset, s))
7573 rc = -EIO;
7574 else {
7575 tp_features.fan_ctrl_status_undef = 0;
7576 rc = 0;
7577 }
7578 break;
fe98a52c 7579
b21a15f6
HMH		 7580 case TPACPI_FAN_WR_ACPI_SFAN:
7581 rc = fan_get_status(&s);
7582 if (rc < 0)
7583 break;
fe98a52c 7584
b21a15f6 7585 s &= 0x07;
fe98a52c 7586
b21a15f6
HMH		 7587 /* Set fan to at least level 4 */
7588 s |= 4;
fe08bc4b 7589
b21a15f6 7590 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 7591 rc = -EIO;
b21a15f6
HMH		 7592 else
7593 rc = 0;
7594 break;
78f81cc4 7595
b21a15f6
HMH		 7596 default:
7597 rc = -ENXIO;
7598 }
5fba344c 7599
b21a15f6 7600 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 7601
7602 if (!rc)
7603 vdbg_printk(TPACPI_DBG_FAN,
7604 "fan control: set fan control register to 0x%02x\n",
7605 s);
b21a15f6 7606 return rc;
69ba91cb 7607}
78f81cc4 7608
b21a15f6 7609static int fan_set_disable(void)
78f81cc4 7610{
b21a15f6 7611 int rc;
c52f0aa5 7612
b21a15f6
HMH		 7613 if (!fan_control_allowed)
7614 return -EPERM;
78f81cc4 7615
7646ea88 7616 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7617 return -ERESTARTSYS;
3ef8a609 7618
b21a15f6
HMH		 7619 rc = 0;
7620 switch (fan_control_access_mode) {
7621 case TPACPI_FAN_WR_ACPI_FANS:
7622 case TPACPI_FAN_WR_TPEC:
7623 if (!acpi_ec_write(fan_status_offset, 0x00))
7624 rc = -EIO;
7625 else {
7626 fan_control_desired_level = 0;
7627 tp_features.fan_ctrl_status_undef = 0;
7628 }
3ef8a609
HMH		 7629 break;
7630
b21a15f6
HMH		 7631 case TPACPI_FAN_WR_ACPI_SFAN:
7632 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
7633 rc = -EIO;
7634 else
7635 fan_control_desired_level = 0;
c52f0aa5
HMH		 7636 break;
7637
7638 default:
b21a15f6 7639 rc = -ENXIO;
78f81cc4
BD		 7640 }
7641
74a60c0f
HMH		 7642 if (!rc)
7643 vdbg_printk(TPACPI_DBG_FAN,
7644 "fan control: set fan control register to 0\n");
fe98a52c 7645
fe98a52c 7646 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 7647 return rc;
7648}
7649
b21a15f6 7650static int fan_set_speed(int speed)
c52f0aa5 7651{
b21a15f6 7652 int rc;
c52f0aa5 7653
b21a15f6
HMH		 7654 if (!fan_control_allowed)
7655 return -EPERM;
3ef8a609 7656
7646ea88 7657 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7658 return -ERESTARTSYS;
c52f0aa5 7659
b21a15f6
HMH		 7660 rc = 0;
7661 switch (fan_control_access_mode) {
7662 case TPACPI_FAN_WR_ACPI_FANS:
7663 if (speed >= 0 && speed <= 65535) {
7664 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
7665 speed, speed, speed))
7666 rc = -EIO;
7667 } else
7668 rc = -EINVAL;
c52f0aa5
HMH		 7669 break;
7670
7671 default:
b21a15f6 7672 rc = -ENXIO;
c52f0aa5
HMH		 7673 }
7674
b21a15f6
HMH		 7675 mutex_unlock(&fan_mutex);
7676 return rc;
16663a87
HMH		 7677}
7678
7679static void fan_watchdog_reset(void)
7680{
4985cd0a
HMH		 7681 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
7682 return;
7683
8fef502e 7684 if (fan_watchdog_maxinterval > 0 &&
41f63c53
TH		 7685 tpacpi_lifecycle != TPACPI_LIFE_EXITING)
7686 mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
7687 msecs_to_jiffies(fan_watchdog_maxinterval * 1000));
7688 else
7689 cancel_delayed_work(&fan_watchdog_task);
16663a87
HMH		 7690}
7691
b21a15f6 7692static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 7693{
b21a15f6 7694 int rc;
18ad7996 7695
b21a15f6
HMH		 7696 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
7697 return;
a12095c2 7698
0978e012 7699 pr_notice("fan watchdog: enabling fan\n");
b21a15f6
HMH		 7700 rc = fan_set_enable();
7701 if (rc < 0) {
0978e012
JP		 7702 pr_err("fan watchdog: error %d while enabling fan, "
7703 "will try again later...\n", -rc);
b21a15f6
HMH		 7704 /* reschedule for later */
7705 fan_watchdog_reset();
7706 }
7707}
eaa7571b 7708
b21a15f6
HMH		 7709/*
7710 * SYSFS fan layout: hwmon compatible (device)
7711 *
7712 * pwm*_enable:
7713 * 0: "disengaged" mode
7714 * 1: manual mode
7715 * 2: native EC "auto" mode (recommended, hardware default)
7716 *
7717 * pwm*: set speed in manual mode, ignored otherwise.
7718 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7719 * interpolation.
7720 *
7721 * fan*_input: tachometer reading, RPM
7722 *
7723 *
7724 * SYSFS fan layout: extensions
7725 *
7726 * fan_watchdog (driver):
7727 * fan watchdog interval in seconds, 0 disables (default), max 120
7728 */
7729
7730/* sysfs fan pwm1_enable ----------------------------------------------- */
7731static ssize_t fan_pwm1_enable_show(struct device *dev,
7732 struct device_attribute *attr,
7733 char *buf)
7734{
7735 int res, mode;
7736 u8 status;
7737
7738 res = fan_get_status_safe(&status);
7739 if (res)
7740 return res;
7741
b21a15f6
HMH		 7742 if (status & TP_EC_FAN_FULLSPEED) {
7743 mode = 0;
7744 } else if (status & TP_EC_FAN_AUTO) {
7745 mode = 2;
7746 } else
7747 mode = 1;
7748
7749 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
7750}
a12095c2 7751
b21a15f6
HMH		 7752static ssize_t fan_pwm1_enable_store(struct device *dev,
7753 struct device_attribute *attr,
7754 const char *buf, size_t count)
7755{
7756 unsigned long t;
7757 int res, level;
7758
7759 if (parse_strtoul(buf, 2, &t))
7760 return -EINVAL;
7761
74a60c0f
HMH		 7762 tpacpi_disclose_usertask("hwmon pwm1_enable",
7763 "set fan mode to %lu\n", t);
7764
b21a15f6
HMH		 7765 switch (t) {
7766 case 0:
7767 level = TP_EC_FAN_FULLSPEED;
7768 break;
7769 case 1:
7770 level = TPACPI_FAN_LAST_LEVEL;
7771 break;
7772 case 2:
7773 level = TP_EC_FAN_AUTO;
7774 break;
7775 case 3:
7776 /* reserved for software-controlled auto mode */
7777 return -ENOSYS;
18ad7996 7778 default:
b21a15f6 7779 return -EINVAL;
18ad7996 7780 }
b21a15f6
HMH		 7781
7782 res = fan_set_level_safe(level);
7783 if (res == -ENXIO)
7784 return -EINVAL;
7785 else if (res < 0)
7786 return res;
7787
7788 fan_watchdog_reset();
7789
7790 return count;
18ad7996
HMH		 7791}
7792
b21a15f6
HMH		 7793static struct device_attribute dev_attr_fan_pwm1_enable =
7794 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
7795 fan_pwm1_enable_show, fan_pwm1_enable_store);
7796
7797/* sysfs fan pwm1 ------------------------------------------------------ */
7798static ssize_t fan_pwm1_show(struct device *dev,
7799 struct device_attribute *attr,
7800 char *buf)
fe98a52c 7801{
b21a15f6
HMH		 7802 int res;
7803 u8 status;
fe98a52c 7804
b21a15f6
HMH		 7805 res = fan_get_status_safe(&status);
7806 if (res)
7807 return res;
ecf2a80a 7808
b21a15f6
HMH		 7809 if ((status &
7810 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
7811 status = fan_control_desired_level;
fe98a52c 7812
b21a15f6
HMH		 7813 if (status > 7)
7814 status = 7;
fe98a52c 7815
b21a15f6 7816 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 7817}
7818
b21a15f6
HMH		 7819static ssize_t fan_pwm1_store(struct device *dev,
7820 struct device_attribute *attr,
7821 const char *buf, size_t count)
18ad7996 7822{
b21a15f6 7823 unsigned long s;
1c6a334e 7824 int rc;
b21a15f6 7825 u8 status, newlevel;
1c6a334e 7826
b21a15f6
HMH		 7827 if (parse_strtoul(buf, 255, &s))
7828 return -EINVAL;
7829
74a60c0f
HMH		 7830 tpacpi_disclose_usertask("hwmon pwm1",
7831 "set fan speed to %lu\n", s);
7832
b21a15f6
HMH		 7833 /* scale down from 0-255 to 0-7 */
7834 newlevel = (s >> 5) & 0x07;
ecf2a80a 7835
7646ea88 7836 if (mutex_lock_killable(&fan_mutex))
fc589a3c 7837 return -ERESTARTSYS;
40ca9fdf 7838
b21a15f6
HMH		 7839 rc = fan_get_status(&status);
7840 if (!rc && (status &
7841 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7842 rc = fan_set_level(newlevel);
7843 if (rc == -ENXIO)
7844 rc = -EINVAL;
7845 else if (!rc) {
7846 fan_update_desired_level(newlevel);
7847 fan_watchdog_reset();
eaa7571b 7848 }
b21a15f6 7849 }
1c6a334e 7850
b21a15f6
HMH		 7851 mutex_unlock(&fan_mutex);
7852 return (rc)? rc : count;
7853}
1c6a334e 7854
b21a15f6
HMH		 7855static struct device_attribute dev_attr_fan_pwm1 =
7856 __ATTR(pwm1, S_IWUSR | S_IRUGO,
7857 fan_pwm1_show, fan_pwm1_store);
1c6a334e 7858
b21a15f6
HMH		 7859/* sysfs fan fan1_input ------------------------------------------------ */
7860static ssize_t fan_fan1_input_show(struct device *dev,
7861 struct device_attribute *attr,
7862 char *buf)
7863{
7864 int res;
7865 unsigned int speed;
1c6a334e 7866
b21a15f6
HMH		 7867 res = fan_get_speed(&speed);
7868 if (res < 0)
7869 return res;
1c6a334e 7870
b21a15f6
HMH		 7871 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7872}
18ad7996 7873
b21a15f6
HMH		 7874static struct device_attribute dev_attr_fan_fan1_input =
7875 __ATTR(fan1_input, S_IRUGO,
7876 fan_fan1_input_show, NULL);
40ca9fdf 7877
d7377247
HMH		 7878/* sysfs fan fan2_input ------------------------------------------------ */
7879static ssize_t fan_fan2_input_show(struct device *dev,
7880 struct device_attribute *attr,
7881 char *buf)
7882{
7883 int res;
7884 unsigned int speed;
7885
7886 res = fan2_get_speed(&speed);
7887 if (res < 0)
7888 return res;
7889
7890 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7891}
7892
7893static struct device_attribute dev_attr_fan_fan2_input =
7894 __ATTR(fan2_input, S_IRUGO,
7895 fan_fan2_input_show, NULL);
7896
b21a15f6
HMH		 7897/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7898static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
7899 char *buf)
7900{
7901 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 7902}
7903
b21a15f6
HMH		 7904static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
7905 const char *buf, size_t count)
18ad7996 7906{
b21a15f6
HMH		 7907 unsigned long t;
7908
7909 if (parse_strtoul(buf, 120, &t))
7910 return -EINVAL;
40ca9fdf 7911
ecf2a80a
HMH		 7912 if (!fan_control_allowed)
7913 return -EPERM;
7914
b21a15f6
HMH		 7915 fan_watchdog_maxinterval = t;
7916 fan_watchdog_reset();
40ca9fdf 7917
74a60c0f
HMH		 7918 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
7919
b21a15f6
HMH		 7920 return count;
7921}
7922
7923static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
7924 fan_fan_watchdog_show, fan_fan_watchdog_store);
7925
7926/* --------------------------------------------------------------------- */
7927static struct attribute *fan_attributes[] = {
7928 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
7929 &dev_attr_fan_fan1_input.attr,
d7377247 7930 NULL, /* for fan2_input */
b21a15f6
HMH		 7931 NULL
7932};
7933
7934static const struct attribute_group fan_attr_group = {
7935 .attrs = fan_attributes,
7936};
7937
d7377247
HMH		 7938#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7939#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 7940
7941#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7942 { .vendor = PCI_VENDOR_ID_IBM, \
7943 .bios = TPACPI_MATCH_ANY, \
7944 .ec = TPID(__id1, __id2), \
7945 .quirks = __quirks }
7946
d7377247
HMH		 7947#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
7948 { .vendor = PCI_VENDOR_ID_LENOVO, \
7949 .bios = TPACPI_MATCH_ANY, \
7950 .ec = TPID(__id1, __id2), \
7951 .quirks = __quirks }
7952
7d95a3d5
HMH		 7953static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
7954 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
7955 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
7956 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
7957 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 7958 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 7959};
7960
d7377247 7961#undef TPACPI_FAN_QL
7d95a3d5
HMH		 7962#undef TPACPI_FAN_QI
7963
b21a15f6
HMH		 7964static int __init fan_init(struct ibm_init_struct *iibm)
7965{
7966 int rc;
7d95a3d5 7967 unsigned long quirks;
b21a15f6 7968
74a60c0f
HMH		 7969 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7970 "initializing fan subdriver\n");
b21a15f6
HMH		 7971
7972 mutex_init(&fan_mutex);
7973 fan_status_access_mode = TPACPI_FAN_NONE;
7974 fan_control_access_mode = TPACPI_FAN_WR_NONE;
7975 fan_control_commands = 0;
7976 fan_watchdog_maxinterval = 0;
7977 tp_features.fan_ctrl_status_undef = 0;
d7377247 7978 tp_features.second_fan = 0;
b21a15f6
HMH		 7979 fan_control_desired_level = 7;
7980
e28393c0
HMH		 7981 if (tpacpi_is_ibm()) {
7982 TPACPI_ACPIHANDLE_INIT(fans);
7983 TPACPI_ACPIHANDLE_INIT(gfan);
7984 TPACPI_ACPIHANDLE_INIT(sfan);
7985 }
b21a15f6 7986
7d95a3d5
HMH		 7987 quirks = tpacpi_check_quirks(fan_quirk_table,
7988 ARRAY_SIZE(fan_quirk_table));
7989
b21a15f6
HMH		 7990 if (gfan_handle) {
7991 /* 570, 600e/x, 770e, 770x */
7992 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
7993 } else {
7994 /* all other ThinkPads: note that even old-style
7995 * ThinkPad ECs supports the fan control register */
7996 if (likely(acpi_ec_read(fan_status_offset,
7997 &fan_control_initial_status))) {
7998 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 7999 if (quirks & TPACPI_FAN_Q1)
8000 fan_quirk1_setup();
d7377247
HMH		 8001 if (quirks & TPACPI_FAN_2FAN) {
8002 tp_features.second_fan = 1;
8003 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8004 "secondary fan support enabled\n");
8005 }
b21a15f6 8006 } else {
0978e012 8007 pr_err("ThinkPad ACPI EC access misbehaving, "
b21a15f6
HMH		 8008 "fan status and control unavailable\n");
8009 return 1;
8010 }
8011 }
8012
8013 if (sfan_handle) {
8014 /* 570, 770x-JL */
8015 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8016 fan_control_commands |=
8017 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8018 } else {
8019 if (!gfan_handle) {
8020 /* gfan without sfan means no fan control */
8021 /* all other models implement TP EC 0x2f control */
8022
8023 if (fans_handle) {
8024 /* X31, X40, X41 */
8025 fan_control_access_mode =
8026 TPACPI_FAN_WR_ACPI_FANS;
8027 fan_control_commands |=
8028 TPACPI_FAN_CMD_SPEED |
8029 TPACPI_FAN_CMD_LEVEL |
8030 TPACPI_FAN_CMD_ENABLE;
8031 } else {
8032 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8033 fan_control_commands |=
8034 TPACPI_FAN_CMD_LEVEL |
8035 TPACPI_FAN_CMD_ENABLE;
8036 }
fe98a52c 8037 }
b21a15f6 8038 }
18ad7996 8039
74a60c0f
HMH		 8040 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8041 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 8042 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8043 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8044 fan_status_access_mode, fan_control_access_mode);
1c6a334e 8045
b21a15f6
HMH		 8046 /* fan control master switch */
8047 if (!fan_control_allowed) {
8048 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8049 fan_control_commands = 0;
74a60c0f 8050 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 8051 "fan control features disabled by parameter\n");
18ad7996 8052 }
40ca9fdf 8053
b21a15f6
HMH		 8054 /* update fan_control_desired_level */
8055 if (fan_status_access_mode != TPACPI_FAN_NONE)
8056 fan_get_status_safe(NULL);
fe98a52c 8057
b21a15f6
HMH		 8058 if (fan_status_access_mode != TPACPI_FAN_NONE ||
8059 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 8060 if (tp_features.second_fan) {
8061 /* attach second fan tachometer */
8062 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
8063 &dev_attr_fan_fan2_input.attr;
8064 }
b21a15f6
HMH		 8065 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
8066 &fan_attr_group);
b21a15f6
HMH		 8067 if (rc < 0)
8068 return rc;
9c0a76e1
HMH		 8069
8070 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
8071 &driver_attr_fan_watchdog);
8072 if (rc < 0) {
8073 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
8074 &fan_attr_group);
8075 return rc;
8076 }
b21a15f6
HMH		 8077 return 0;
8078 } else
8079 return 1;
56b6aeb0
HMH		 8080}
8081
b21a15f6 8082static void fan_exit(void)
56b6aeb0 8083{
74a60c0f 8084 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 8085 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 8086
b21a15f6
HMH		 8087 /* FIXME: can we really do this unconditionally? */
8088 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 8089 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
8090 &driver_attr_fan_watchdog);
40ca9fdf 8091
b21a15f6 8092 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 8093 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 8094}
8095
fd3c3a42 8096static void fan_suspend(void)
75700e53 8097{
0081b162
HMH		 8098 int rc;
8099
75700e53
HMH		 8100 if (!fan_control_allowed)
8101 return;
8102
8103 /* Store fan status in cache */
0081b162
HMH		 8104 fan_control_resume_level = 0;
8105 rc = fan_get_status_safe(&fan_control_resume_level);
8106 if (rc < 0)
0978e012
JP		 8107 pr_notice("failed to read fan level for later "
8108 "restore during resume: %d\n", rc);
0081b162
HMH		 8109
8110 /* if it is undefined, don't attempt to restore it.
8111 * KEEP THIS LAST */
75700e53 8112 if (tp_features.fan_ctrl_status_undef)
0081b162 8113 fan_control_resume_level = 0;
75700e53
HMH		 8114}
8115
8116static void fan_resume(void)
8117{
75700e53
HMH		 8118 u8 current_level = 7;
8119 bool do_set = false;
0081b162 8120 int rc;
75700e53
HMH		 8121
8122 /* DSDT *always* updates status on resume */
8123 tp_features.fan_ctrl_status_undef = 0;
8124
75700e53 8125 if (!fan_control_allowed ||
0081b162 8126 !fan_control_resume_level ||
75700e53
HMH		 8127 (fan_get_status_safe(&current_level) < 0))
8128 return;
8129
8130 switch (fan_control_access_mode) {
8131 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 8132 /* never decrease fan level */
8133 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 8134 break;
8135 case TPACPI_FAN_WR_ACPI_FANS:
8136 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8137 /* never decrease fan level, scale is:
8138 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8139 *
8140 * We expect the firmware to set either 7 or AUTO, but we
8141 * handle FULLSPEED out of paranoia.
8142 *
8143 * So, we can safely only restore FULLSPEED or 7, anything
8144 * else could slow the fan. Restoring AUTO is useless, at
8145 * best that's exactly what the DSDT already set (it is the
8146 * slower it uses).
8147 *
8148 * Always keep in mind that the DSDT *will* have set the
8149 * fans to what the vendor supposes is the best level. We
8150 * muck with it only to speed the fan up.
8151 */
8152 if (fan_control_resume_level != 7 &&
8153 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
8154 return;
8155 else
8156 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
8157 (current_level != fan_control_resume_level);
75700e53
HMH		 8158 break;
8159 default:
8160 return;
8161 }
8162 if (do_set) {
0978e012
JP		 8163 pr_notice("restoring fan level to 0x%02x\n",
8164 fan_control_resume_level);
0081b162
HMH		 8165 rc = fan_set_level_safe(fan_control_resume_level);
8166 if (rc < 0)
0978e012 8167 pr_notice("failed to restore fan level: %d\n", rc);
75700e53
HMH		 8168 }
8169}
8170
887965e6 8171static int fan_read(struct seq_file *m)
56b6aeb0 8172{
56b6aeb0
HMH		 8173 int rc;
8174 u8 status;
8175 unsigned int speed = 0;
8176
8177 switch (fan_status_access_mode) {
efa27145 8178 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 8179 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8180 rc = fan_get_status_safe(&status);
8181 if (rc < 0)
56b6aeb0
HMH		 8182 return rc;
8183
887965e6 8184 seq_printf(m, "status:\t\t%s\n"
56b6aeb0
HMH		 8185 "level:\t\t%d\n",
8186 (status != 0) ? "enabled" : "disabled", status);
8187 break;
8188
efa27145 8189 case TPACPI_FAN_RD_TPEC:
56b6aeb0 8190 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8191 rc = fan_get_status_safe(&status);
8192 if (rc < 0)
56b6aeb0
HMH		 8193 return rc;
8194
887965e6 8195 seq_printf(m, "status:\t\t%s\n",
56b6aeb0
HMH		 8196 (status != 0) ? "enabled" : "disabled");
8197
35ff8b9f
HMH		 8198 rc = fan_get_speed(&speed);
8199 if (rc < 0)
56b6aeb0
HMH		 8200 return rc;
8201
887965e6 8202 seq_printf(m, "speed:\t\t%d\n", speed);
56b6aeb0 8203
efa27145 8204 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0 8205 /* Disengaged mode takes precedence */
887965e6 8206 seq_printf(m, "level:\t\tdisengaged\n");
efa27145 8207 else if (status & TP_EC_FAN_AUTO)
887965e6 8208 seq_printf(m, "level:\t\tauto\n");
56b6aeb0 8209 else
887965e6 8210 seq_printf(m, "level:\t\t%d\n", status);
56b6aeb0
HMH		 8211 break;
8212
efa27145 8213 case TPACPI_FAN_NONE:
56b6aeb0 8214 default:
887965e6 8215 seq_printf(m, "status:\t\tnot supported\n");
56b6aeb0
HMH		 8216 }
8217
efa27145 8218 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
887965e6 8219 seq_printf(m, "commands:\tlevel <level>");
56b6aeb0
HMH		 8220
8221 switch (fan_control_access_mode) {
efa27145 8222 case TPACPI_FAN_WR_ACPI_SFAN:
887965e6 8223 seq_printf(m, " (<level> is 0-7)\n");
56b6aeb0
HMH		 8224 break;
8225
8226 default:
887965e6 8227 seq_printf(m, " (<level> is 0-7, "
fe98a52c 8228 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 8229 break;
8230 }
8231 }
18ad7996 8232
efa27145 8233 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
887965e6 8234 seq_printf(m, "commands:\tenable, disable\n"
35ff8b9f
HMH		 8235 "commands:\twatchdog <timeout> (<timeout> "
8236 "is 0 (off), 1-120 (seconds))\n");
1da177e4 8237
efa27145 8238 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
887965e6 8239 seq_printf(m, "commands:\tspeed <speed>"
56b6aeb0
HMH		 8240 " (<speed> is 0-65535)\n");
8241
887965e6 8242 return 0;
78f81cc4
BD		 8243}
8244
18ad7996
HMH		 8245static int fan_write_cmd_level(const char *cmd, int *rc)
8246{
8247 int level;
8248
a12095c2 8249 if (strlencmp(cmd, "level auto") == 0)
efa27145 8250 level = TP_EC_FAN_AUTO;
fe98a52c 8251 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 8252 (strlencmp(cmd, "level full-speed") == 0))
efa27145 8253 level = TP_EC_FAN_FULLSPEED;
a12095c2 8254 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 8255 return 0;
8256
35ff8b9f
HMH		 8257 *rc = fan_set_level_safe(level);
8258 if (*rc == -ENXIO)
0978e012
JP		 8259 pr_err("level command accepted for unsupported access mode %d\n",
8260 fan_control_access_mode);
74a60c0f
HMH		 8261 else if (!*rc)
8262 tpacpi_disclose_usertask("procfs fan",
8263 "set level to %d\n", level);
18ad7996
HMH		 8264
8265 return 1;
8266}
8267
8268static int fan_write_cmd_enable(const char *cmd, int *rc)
8269{
8270 if (strlencmp(cmd, "enable") != 0)
8271 return 0;
8272
35ff8b9f
HMH		 8273 *rc = fan_set_enable();
8274 if (*rc == -ENXIO)
0978e012
JP		 8275 pr_err("enable command accepted for unsupported access mode %d\n",
8276 fan_control_access_mode);
74a60c0f
HMH		 8277 else if (!*rc)
8278 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 8279
8280 return 1;
8281}
8282
8283static int fan_write_cmd_disable(const char *cmd, int *rc)
8284{
8285 if (strlencmp(cmd, "disable") != 0)
8286 return 0;
8287
35ff8b9f
HMH		 8288 *rc = fan_set_disable();
8289 if (*rc == -ENXIO)
0978e012
JP		 8290 pr_err("disable command accepted for unsupported access mode %d\n",
8291 fan_control_access_mode);
74a60c0f
HMH		 8292 else if (!*rc)
8293 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 8294
8295 return 1;
8296}
8297
8298static int fan_write_cmd_speed(const char *cmd, int *rc)
8299{
8300 int speed;
8301
a8b7a662
HMH		 8302 /* TODO:
8303 * Support speed <low> <medium> <high> ? */
8304
18ad7996
HMH		 8305 if (sscanf(cmd, "speed %d", &speed) != 1)
8306 return 0;
8307
35ff8b9f
HMH		 8308 *rc = fan_set_speed(speed);
8309 if (*rc == -ENXIO)
0978e012
JP		 8310 pr_err("speed command accepted for unsupported access mode %d\n",
8311 fan_control_access_mode);
74a60c0f
HMH		 8312 else if (!*rc)
8313 tpacpi_disclose_usertask("procfs fan",
8314 "set speed to %d\n", speed);
18ad7996
HMH		 8315
8316 return 1;
8317}
8318
16663a87
HMH		 8319static int fan_write_cmd_watchdog(const char *cmd, int *rc)
8320{
8321 int interval;
8322
8323 if (sscanf(cmd, "watchdog %d", &interval) != 1)
8324 return 0;
8325
8326 if (interval < 0 || interval > 120)
8327 *rc = -EINVAL;
74a60c0f 8328 else {
16663a87 8329 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 8330 tpacpi_disclose_usertask("procfs fan",
8331 "set watchdog timer to %d\n",
8332 interval);
8333 }
16663a87
HMH		 8334
8335 return 1;
8336}
8337
18ad7996
HMH		 8338static int fan_write(char *buf)
8339{
8340 char *cmd;
8341 int rc = 0;
8342
8343 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 8344 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 8345 fan_write_cmd_level(cmd, &rc)) &&
efa27145 8346 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 8347 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 8348 fan_write_cmd_disable(cmd, &rc) ||
8349 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 8350 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 8351 fan_write_cmd_speed(cmd, &rc))
8352 )
8353 rc = -EINVAL;
16663a87
HMH		 8354 else if (!rc)
8355 fan_watchdog_reset();
18ad7996
HMH		 8356 }
8357
8358 return rc;
8359}
8360
a5763f22
HMH		 8361static struct ibm_struct fan_driver_data = {
8362 .name = "fan",
8363 .read = fan_read,
8364 .write = fan_write,
8365 .exit = fan_exit,
75700e53
HMH		 8366 .suspend = fan_suspend,
8367 .resume = fan_resume,
a5763f22
HMH		 8368};
8369
420f9739
DH		 8370/*************************************************************************
8371 * Mute LED subdriver
8372 */
8373
8374
8375struct tp_led_table {
8376 acpi_string name;
8377 int on_value;
8378 int off_value;
8379 int state;
8380};
8381
8382static struct tp_led_table led_tables[] = {
8383 [TPACPI_LED_MUTE] = {
8384 .name = "SSMS",
8385 .on_value = 1,
8386 .off_value = 0,
8387 },
8388 [TPACPI_LED_MICMUTE] = {
8389 .name = "MMTS",
8390 .on_value = 2,
8391 .off_value = 0,
8392 },
8393};
8394
8395static int mute_led_on_off(struct tp_led_table *t, bool state)
8396{
8397 acpi_handle temp;
8398 int output;
8399
8400 if (!ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp))) {
8401 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
8402 return -EIO;
8403 }
8404
8405 if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
8406 state ? t->on_value : t->off_value))
8407 return -EIO;
8408
8409 t->state = state;
8410 return state;
8411}
8412
8413int tpacpi_led_set(int whichled, bool on)
8414{
8415 struct tp_led_table *t;
8416
8417 if (whichled < 0 || whichled >= TPACPI_LED_MAX)
8418 return -EINVAL;
8419
8420 t = &led_tables[whichled];
8421 if (t->state < 0 || t->state == on)
8422 return t->state;
8423 return mute_led_on_off(t, on);
8424}
8425EXPORT_SYMBOL_GPL(tpacpi_led_set);
8426
8427static int mute_led_init(struct ibm_init_struct *iibm)
8428{
8429 acpi_handle temp;
8430 int i;
8431
8432 for (i = 0; i < TPACPI_LED_MAX; i++) {
8433 struct tp_led_table *t = &led_tables[i];
8434 if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp)))
8435 mute_led_on_off(t, false);
8436 else
8437 t->state = -ENODEV;
8438 }
8439 return 0;
8440}
8441
8442static void mute_led_exit(void)
8443{
8444 int i;
8445
8446 for (i = 0; i < TPACPI_LED_MAX; i++)
8447 tpacpi_led_set(i, false);
8448}
8449
119f4498
TI		 8450static void mute_led_resume(void)
8451{
8452 int i;
8453
8454 for (i = 0; i < TPACPI_LED_MAX; i++) {
8455 struct tp_led_table *t = &led_tables[i];
8456 if (t->state >= 0)
8457 mute_led_on_off(t, t->state);
8458 }
8459}
8460
420f9739
DH		 8461static struct ibm_struct mute_led_driver_data = {
8462 .name = "mute_led",
8463 .exit = mute_led_exit,
119f4498 8464 .resume = mute_led_resume,
420f9739
DH		 8465};
8466
56b6aeb0
HMH		 8467/****************************************************************************
8468 ****************************************************************************
8469 *
8470 * Infrastructure
8471 *
8472 ****************************************************************************
8473 ****************************************************************************/
8474
8b468c0c
HMH		 8475/*
8476 * HKEY event callout for other subdrivers go here
8477 * (yes, it is ugly, but it is quick, safe, and gets the job done
8478 */
8479static void tpacpi_driver_event(const unsigned int hkey_event)
8480{
347a2686
HMH		 8481 if (ibm_backlight_device) {
8482 switch (hkey_event) {
8483 case TP_HKEY_EV_BRGHT_UP:
8484 case TP_HKEY_EV_BRGHT_DOWN:
8485 tpacpi_brightness_notify_change();
8486 }
8487 }
0d204c34
HMH		 8488 if (alsa_card) {
8489 switch (hkey_event) {
8490 case TP_HKEY_EV_VOL_UP:
8491 case TP_HKEY_EV_VOL_DOWN:
8492 case TP_HKEY_EV_VOL_MUTE:
8493 volume_alsa_notify_change();
8494 }
8495 }
8b468c0c
HMH		 8496}
8497
8b468c0c
HMH		 8498static void hotkey_driver_event(const unsigned int scancode)
8499{
67bcae6e 8500 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 8501}
8502
7fd40029
HMH		 8503/* sysfs name ---------------------------------------------------------- */
8504static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
8505 struct device_attribute *attr,
8506 char *buf)
8507{
e0c7dfe7 8508 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 8509}
8510
8511static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
8512 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
8513
8514/* --------------------------------------------------------------------- */
8515
56b6aeb0 8516/* /proc support */
94954cc6 8517static struct proc_dir_entry *proc_dir;
16663a87 8518
56b6aeb0
HMH		 8519/*
8520 * Module and infrastructure proble, init and exit handling
8521 */
1da177e4 8522
90ab5ee9 8523static bool force_load;
b21a15f6 8524
fe08bc4b 8525#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 8526static const char * __init str_supported(int is_supported)
fe08bc4b 8527{
a5763f22 8528 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 8529
a5763f22 8530 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 8531}
8532#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8533
b21a15f6
HMH		 8534static void ibm_exit(struct ibm_struct *ibm)
8535{
8536 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
8537
8538 list_del_init(&ibm->all_drivers);
8539
8540 if (ibm->flags.acpi_notify_installed) {
8541 dbg_printk(TPACPI_DBG_EXIT,
8542 "%s: acpi_remove_notify_handler\n", ibm->name);
8543 BUG_ON(!ibm->acpi);
8544 acpi_remove_notify_handler(*ibm->acpi->handle,
8545 ibm->acpi->type,
8546 dispatch_acpi_notify);
8547 ibm->flags.acpi_notify_installed = 0;
b21a15f6
HMH		 8548 }
8549
8550 if (ibm->flags.proc_created) {
8551 dbg_printk(TPACPI_DBG_EXIT,
8552 "%s: remove_proc_entry\n", ibm->name);
8553 remove_proc_entry(ibm->name, proc_dir);
8554 ibm->flags.proc_created = 0;
8555 }
8556
8557 if (ibm->flags.acpi_driver_registered) {
8558 dbg_printk(TPACPI_DBG_EXIT,
8559 "%s: acpi_bus_unregister_driver\n", ibm->name);
8560 BUG_ON(!ibm->acpi);
8561 acpi_bus_unregister_driver(ibm->acpi->driver);
8562 kfree(ibm->acpi->driver);
8563 ibm->acpi->driver = NULL;
8564 ibm->flags.acpi_driver_registered = 0;
8565 }
8566
8567 if (ibm->flags.init_called && ibm->exit) {
8568 ibm->exit();
8569 ibm->flags.init_called = 0;
8570 }
8571
8572 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
8573}
f74a27d4 8574
a5763f22 8575static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 8576{
8577 int ret;
a5763f22 8578 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 8579 struct proc_dir_entry *entry;
8580
a5763f22
HMH		 8581 BUG_ON(ibm == NULL);
8582
8583 INIT_LIST_HEAD(&ibm->all_drivers);
8584
92641177 8585 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 8586 return 0;
8587
fe08bc4b
HMH		 8588 dbg_printk(TPACPI_DBG_INIT,
8589 "probing for %s\n", ibm->name);
8590
a5763f22
HMH		 8591 if (iibm->init) {
8592 ret = iibm->init(iibm);
5fba344c
HMH		 8593 if (ret > 0)
8594 return 0; /* probe failed */
8595 if (ret)
1da177e4 8596 return ret;
a5763f22 8597
92641177 8598 ibm->flags.init_called = 1;
1da177e4
LT		 8599 }
8600
8d376cd6
HMH		 8601 if (ibm->acpi) {
8602 if (ibm->acpi->hid) {
8603 ret = register_tpacpi_subdriver(ibm);
8604 if (ret)
8605 goto err_out;
8606 }
5fba344c 8607
8d376cd6
HMH		 8608 if (ibm->acpi->notify) {
8609 ret = setup_acpi_notify(ibm);
8610 if (ret == -ENODEV) {
0978e012
JP		 8611 pr_notice("disabling subdriver %s\n",
8612 ibm->name);
8d376cd6
HMH		 8613 ret = 0;
8614 goto err_out;
8615 }
8616 if (ret < 0)
8617 goto err_out;
5fba344c 8618 }
5fba344c
HMH		 8619 }
8620
fe08bc4b
HMH		 8621 dbg_printk(TPACPI_DBG_INIT,
8622 "%s installed\n", ibm->name);
8623
78f81cc4 8624 if (ibm->read) {
d161a13f 8625 umode_t mode = iibm->base_procfs_mode;
887965e6 8626
b525c06c
HMH		 8627 if (!mode)
8628 mode = S_IRUGO;
887965e6
AD		 8629 if (ibm->write)
8630 mode |= S_IWUSR;
8631 entry = proc_create_data(ibm->name, mode, proc_dir,
8632 &dispatch_proc_fops, ibm);
78f81cc4 8633 if (!entry) {
0978e012 8634 pr_err("unable to create proc entry %s\n", ibm->name);
5fba344c
HMH		 8635 ret = -ENODEV;
8636 goto err_out;
78f81cc4 8637 }
92641177 8638 ibm->flags.proc_created = 1;
78f81cc4 8639 }
1da177e4 8640
a5763f22
HMH		 8641 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
8642
1da177e4 8643 return 0;
5fba344c
HMH		 8644
8645err_out:
fe08bc4b
HMH		 8646 dbg_printk(TPACPI_DBG_INIT,
8647 "%s: at error exit path with result %d\n",
8648 ibm->name, ret);
8649
5fba344c
HMH		 8650 ibm_exit(ibm);
8651 return (ret < 0)? ret : 0;
1da177e4
LT		 8652}
8653
56b6aeb0
HMH		 8654/* Probing */
8655
050df107
HMH		 8656static bool __pure __init tpacpi_is_fw_digit(const char c)
8657{
8658 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
8659}
8660
8661/* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
8662static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
8663 const char t)
8664{
8665 return s && strlen(s) >= 8 &&
8666 tpacpi_is_fw_digit(s[0]) &&
8667 tpacpi_is_fw_digit(s[1]) &&
16a3d9f5
MI		 8668 s[2] == t &&
8669 (s[3] == 'T' || s[3] == 'N') &&
050df107 8670 tpacpi_is_fw_digit(s[4]) &&
b569ab39 8671 tpacpi_is_fw_digit(s[5]);
050df107
HMH		 8672}
8673
bf20e740
HMH		 8674/* returns 0 - probe ok, or < 0 - probe error.
8675 * Probe ok doesn't mean thinkpad found.
8676 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8677static int __must_check __init get_thinkpad_model_data(
8678 struct thinkpad_id_data *tp)
1da177e4 8679{
1855256c 8680 const struct dmi_device *dev = NULL;
56b6aeb0 8681 char ec_fw_string[18];
bf20e740 8682 char const *s;
1da177e4 8683
d5a2f2f1 8684 if (!tp)
bf20e740 8685 return -EINVAL;
d5a2f2f1
HMH		 8686
8687 memset(tp, 0, sizeof(*tp));
8688
8689 if (dmi_name_in_vendors("IBM"))
8690 tp->vendor = PCI_VENDOR_ID_IBM;
8691 else if (dmi_name_in_vendors("LENOVO"))
8692 tp->vendor = PCI_VENDOR_ID_LENOVO;
8693 else
bf20e740 8694 return 0;
d5a2f2f1 8695
bf20e740
HMH		 8696 s = dmi_get_system_info(DMI_BIOS_VERSION);
8697 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
8698 if (s && !tp->bios_version_str)
8699 return -ENOMEM;
050df107
HMH		 8700
8701 /* Really ancient ThinkPad 240X will fail this, which is fine */
16a3d9f5
MI		 8702 if (!(tpacpi_is_valid_fw_id(tp->bios_version_str, 'E') ||
8703 tpacpi_is_valid_fw_id(tp->bios_version_str, 'C')))
bf20e740 8704 return 0;
050df107 8705
d5a2f2f1
HMH		 8706 tp->bios_model = tp->bios_version_str[0]
8707 | (tp->bios_version_str[1] << 8);
050df107
HMH		 8708 tp->bios_release = (tp->bios_version_str[4] << 8)
8709 | tp->bios_version_str[5];
d5a2f2f1 8710
56b6aeb0
HMH		 8711 /*
8712 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
8713 * X32 or newer, all Z series; Some models must have an
8714 * up-to-date BIOS or they will not be detected.
8715 *
8716 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8717 */
8718 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
8719 if (sscanf(dev->name,
8720 "IBM ThinkPad Embedded Controller -[%17c",
8721 ec_fw_string) == 1) {
8722 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
8723 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 8724
8725 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 8726 if (!tp->ec_version_str)
8727 return -ENOMEM;
050df107
HMH		 8728
8729 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
8730 tp->ec_model = ec_fw_string[0]
8731 | (ec_fw_string[1] << 8);
8732 tp->ec_release = (ec_fw_string[4] << 8)
8733 | ec_fw_string[5];
8734 } else {
0978e012
JP		 8735 pr_notice("ThinkPad firmware release %s "
8736 "doesn't match the known patterns\n",
8737 ec_fw_string);
8738 pr_notice("please report this to %s\n",
8739 TPACPI_MAIL);
050df107 8740 }
d5a2f2f1 8741 break;
78f81cc4 8742 }
1da177e4 8743 }
d5a2f2f1 8744
bf20e740 8745 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
23b05316 8746 if (s && !(strnicmp(s, "ThinkPad", 8) && strnicmp(s, "Lenovo", 6))) {
bf20e740
HMH		 8747 tp->model_str = kstrdup(s, GFP_KERNEL);
8748 if (!tp->model_str)
8749 return -ENOMEM;
a4f46bb9
MI		 8750 } else {
8751 s = dmi_get_system_info(DMI_BIOS_VENDOR);
8752 if (s && !(strnicmp(s, "Lenovo", 6))) {
8753 tp->model_str = kstrdup(s, GFP_KERNEL);
8754 if (!tp->model_str)
8755 return -ENOMEM;
8756 }
d5a2f2f1 8757 }
8c74adbc 8758
bf20e740
HMH		 8759 s = dmi_get_system_info(DMI_PRODUCT_NAME);
8760 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
8761 if (s && !tp->nummodel_str)
8762 return -ENOMEM;
8763
8764 return 0;
1da177e4
LT		 8765}
8766
5fba344c
HMH		 8767static int __init probe_for_thinkpad(void)
8768{
8769 int is_thinkpad;
8770
8771 if (acpi_disabled)
8772 return -ENODEV;
8773
e28393c0
HMH		 8774 /* It would be dangerous to run the driver in this case */
8775 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
8776 return -ENODEV;
8777
5fba344c
HMH		 8778 /*
8779 * Non-ancient models have better DMI tagging, but very old models
e675abaf 8780 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 8781 */
e675abaf
HMH		 8782 is_thinkpad = (thinkpad_id.model_str != NULL) ||
8783 (thinkpad_id.ec_model != 0) ||
8784 tpacpi_is_fw_known();
5fba344c 8785
437e470c
HMH		 8786 /* The EC handler is required */
8787 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
5fba344c
HMH		 8788 if (!ec_handle) {
8789 if (is_thinkpad)
0978e012 8790 pr_err("Not yet supported ThinkPad detected!\n");
5fba344c
HMH		 8791 return -ENODEV;
8792 }
8793
0dcef77c
HMH		 8794 if (!is_thinkpad && !force_load)
8795 return -ENODEV;
8796
5fba344c
HMH		 8797 return 0;
8798}
8799
7a43f788
HMH		 8800static void __init thinkpad_acpi_init_banner(void)
8801{
0978e012
JP		 8802 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
8803 pr_info("%s\n", TPACPI_URL);
7a43f788 8804
0978e012 8805 pr_info("ThinkPad BIOS %s, EC %s\n",
7a43f788
HMH		 8806 (thinkpad_id.bios_version_str) ?
8807 thinkpad_id.bios_version_str : "unknown",
8808 (thinkpad_id.ec_version_str) ?
8809 thinkpad_id.ec_version_str : "unknown");
8810
8811 BUG_ON(!thinkpad_id.vendor);
8812
8813 if (thinkpad_id.model_str)
0978e012 8814 pr_info("%s %s, model %s\n",
7a43f788
HMH		 8815 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
8816 "IBM" : ((thinkpad_id.vendor ==
8817 PCI_VENDOR_ID_LENOVO) ?
8818 "Lenovo" : "Unknown vendor"),
8819 thinkpad_id.model_str,
8820 (thinkpad_id.nummodel_str) ?
8821 thinkpad_id.nummodel_str : "unknown");
8822}
5fba344c 8823
56b6aeb0 8824/* Module init, exit, parameters */
1da177e4 8825
a5763f22
HMH		 8826static struct ibm_init_struct ibms_init[] __initdata = {
8827 {
a5763f22
HMH		 8828 .data = &thinkpad_acpi_driver_data,
8829 },
8830 {
8831 .init = hotkey_init,
8832 .data = &hotkey_driver_data,
8833 },
8834 {
8835 .init = bluetooth_init,
8836 .data = &bluetooth_driver_data,
8837 },
8838 {
8839 .init = wan_init,
8840 .data = &wan_driver_data,
8841 },
0045c0aa
HMH		 8842 {
8843 .init = uwb_init,
8844 .data = &uwb_driver_data,
8845 },
d7c1d17d 8846#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 8847 {
8848 .init = video_init,
b525c06c 8849 .base_procfs_mode = S_IRUSR,
a5763f22
HMH		 8850 .data = &video_driver_data,
8851 },
d7c1d17d 8852#endif
a5763f22
HMH		 8853 {
8854 .init = light_init,
8855 .data = &light_driver_data,
8856 },
a5763f22
HMH		 8857 {
8858 .init = cmos_init,
8859 .data = &cmos_driver_data,
8860 },
8861 {
8862 .init = led_init,
8863 .data = &led_driver_data,
8864 },
8865 {
8866 .init = beep_init,
8867 .data = &beep_driver_data,
8868 },
8869 {
8870 .init = thermal_init,
8871 .data = &thermal_driver_data,
8872 },
a5763f22
HMH		 8873 {
8874 .init = brightness_init,
8875 .data = &brightness_driver_data,
8876 },
8877 {
329e4e18 8878 .init = volume_init,
a5763f22
HMH		 8879 .data = &volume_driver_data,
8880 },
8881 {
8882 .init = fan_init,
8883 .data = &fan_driver_data,
8884 },
420f9739
DH		 8885 {
8886 .init = mute_led_init,
8887 .data = &mute_led_driver_data,
8888 },
a5763f22
HMH		 8889};
8890
3945ac36 8891static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 8892{
8893 unsigned int i;
a5763f22 8894 struct ibm_struct *ibm;
1da177e4 8895
59f91ff1
HMH		 8896 if (!kp || !kp->name || !val)
8897 return -EINVAL;
8898
a5763f22
HMH		 8899 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
8900 ibm = ibms_init[i].data;
59f91ff1
HMH		 8901 WARN_ON(ibm == NULL);
8902
8903 if (!ibm || !ibm->name)
8904 continue;
a5763f22
HMH		 8905
8906 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
8907 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 8908 return -ENOSPC;
a5763f22
HMH		 8909 strcpy(ibms_init[i].param, val);
8910 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 8911 return 0;
8912 }
a5763f22 8913 }
1da177e4 8914
1da177e4
LT		 8915 return -EINVAL;
8916}
8917
b09c7225 8918module_param(experimental, int, 0444);
f68080f8 8919MODULE_PARM_DESC(experimental,
35ff8b9f 8920 "Enables experimental features when non-zero");
56b6aeb0 8921
132ce091 8922module_param_named(debug, dbg_level, uint, 0);
f68080f8 8923MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 8924
b09c7225 8925module_param(force_load, bool, 0444);
f68080f8 8926MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 8927 "Attempts to load the driver even on a "
8928 "mis-identified ThinkPad when true");
0dcef77c 8929
b09c7225 8930module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 8931MODULE_PARM_DESC(fan_control,
35ff8b9f 8932 "Enables setting fan parameters features when true");
ecf2a80a 8933
b09c7225 8934module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 8935MODULE_PARM_DESC(brightness_mode,
35ff8b9f 8936 "Selects brightness control strategy: "
0e501834 8937 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 8938
b09c7225 8939module_param(brightness_enable, uint, 0444);
f68080f8 8940MODULE_PARM_DESC(brightness_enable,
35ff8b9f 8941 "Enables backlight control when 1, disables when 0");
87cc537a 8942
ff850c33 8943#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
329e4e18
HMH		 8944module_param_named(volume_mode, volume_mode, uint, 0444);
8945MODULE_PARM_DESC(volume_mode,
8946 "Selects volume control strategy: "
8947 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
8948
a112ceee
HMH		 8949module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
8950MODULE_PARM_DESC(volume_capabilities,
8951 "Selects the mixer capabilites: "
8952 "0=auto, 1=volume and mute, 2=mute only");
8953
c7ac6291
HMH		 8954module_param_named(volume_control, volume_control_allowed, bool, 0444);
8955MODULE_PARM_DESC(volume_control,
8956 "Enables software override for the console audio "
8957 "control when true");
8958
0d204c34
HMH		 8959/* ALSA module API parameters */
8960module_param_named(index, alsa_index, int, 0444);
8961MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
8962module_param_named(id, alsa_id, charp, 0444);
8963MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
8964module_param_named(enable, alsa_enable, bool, 0444);
8965MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
ff850c33 8966#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
0d204c34 8967
e0c7dfe7 8968#define TPACPI_PARAM(feature) \
f68080f8 8969 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 8970 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 8971 "at module load, see documentation")
1da177e4 8972
e0c7dfe7
HMH		 8973TPACPI_PARAM(hotkey);
8974TPACPI_PARAM(bluetooth);
8975TPACPI_PARAM(video);
8976TPACPI_PARAM(light);
e0c7dfe7
HMH		 8977TPACPI_PARAM(cmos);
8978TPACPI_PARAM(led);
8979TPACPI_PARAM(beep);
e0c7dfe7
HMH		 8980TPACPI_PARAM(brightness);
8981TPACPI_PARAM(volume);
8982TPACPI_PARAM(fan);
78f81cc4 8983
a73f3091 8984#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 8985module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 8986MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
8987module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
8988MODULE_PARM_DESC(wlsw_state,
8989 "Initial state of the emulated WLSW switch");
8990
b09c7225 8991module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 8992MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
8993module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
8994MODULE_PARM_DESC(bluetooth_state,
8995 "Initial state of the emulated bluetooth switch");
8996
b09c7225 8997module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 8998MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
8999module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
9000MODULE_PARM_DESC(wwan_state,
9001 "Initial state of the emulated WWAN switch");
0045c0aa 9002
b09c7225 9003module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 9004MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
9005module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
9006MODULE_PARM_DESC(uwb_state,
9007 "Initial state of the emulated UWB switch");
a73f3091
HMH		 9008#endif
9009
b21a15f6
HMH		 9010static void thinkpad_acpi_module_exit(void)
9011{
9012 struct ibm_struct *ibm, *itmp;
9013
9014 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
9015
9016 list_for_each_entry_safe_reverse(ibm, itmp,
9017 &tpacpi_all_drivers,
9018 all_drivers) {
9019 ibm_exit(ibm);
9020 }
9021
9022 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
9023
9024 if (tpacpi_inputdev) {
9025 if (tp_features.input_device_registered)
9026 input_unregister_device(tpacpi_inputdev);
9027 else
9028 input_free_device(tpacpi_inputdev);
00d39597 9029 kfree(hotkey_keycode_map);
b21a15f6
HMH		 9030 }
9031
9032 if (tpacpi_hwmon)
9033 hwmon_device_unregister(tpacpi_hwmon);
9034
9035 if (tp_features.sensors_pdev_attrs_registered)
9036 device_remove_file(&tpacpi_sensors_pdev->dev,
9037 &dev_attr_thinkpad_acpi_pdev_name);
9038 if (tpacpi_sensors_pdev)
9039 platform_device_unregister(tpacpi_sensors_pdev);
9040 if (tpacpi_pdev)
9041 platform_device_unregister(tpacpi_pdev);
9042
9043 if (tp_features.sensors_pdrv_attrs_registered)
9044 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
9045 if (tp_features.platform_drv_attrs_registered)
9046 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
9047
9048 if (tp_features.sensors_pdrv_registered)
9049 platform_driver_unregister(&tpacpi_hwmon_pdriver);
9050
9051 if (tp_features.platform_drv_registered)
9052 platform_driver_unregister(&tpacpi_pdriver);
9053
9054 if (proc_dir)
e0c7dfe7 9055 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 9056
e0e3c061
HMH		 9057 if (tpacpi_wq)
9058 destroy_workqueue(tpacpi_wq);
9059
b21a15f6
HMH		 9060 kfree(thinkpad_id.bios_version_str);
9061 kfree(thinkpad_id.ec_version_str);
9062 kfree(thinkpad_id.model_str);
d2be15bd 9063 kfree(thinkpad_id.nummodel_str);
b21a15f6
HMH		 9064}
9065
f74a27d4 9066
1def7115 9067static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 9068{
9069 int ret, i;
9070
8fef502e
HMH		 9071 tpacpi_lifecycle = TPACPI_LIFE_INIT;
9072
54ae1501 9073 /* Driver-level probe */
d5a2f2f1 9074
bf20e740
HMH		 9075 ret = get_thinkpad_model_data(&thinkpad_id);
9076 if (ret) {
0978e012 9077 pr_err("unable to get DMI data: %d\n", ret);
bf20e740
HMH		 9078 thinkpad_acpi_module_exit();
9079 return ret;
9080 }
5fba344c 9081 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 9082 if (ret) {
9083 thinkpad_acpi_module_exit();
5fba344c 9084 return ret;
d5a2f2f1 9085 }
1da177e4 9086
54ae1501 9087 /* Driver initialization */
d5a2f2f1 9088
7a43f788
HMH		 9089 thinkpad_acpi_init_banner();
9090 tpacpi_check_outdated_fw();
9091
e0c7dfe7
HMH		 9092 TPACPI_ACPIHANDLE_INIT(ecrd);
9093 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 9094
e0e3c061
HMH		 9095 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
9096 if (!tpacpi_wq) {
9097 thinkpad_acpi_module_exit();
9098 return -ENOMEM;
9099 }
9100
e0c7dfe7 9101 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 9102 if (!proc_dir) {
0978e012 9103 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
1def7115 9104 thinkpad_acpi_module_exit();
1da177e4
LT		 9105 return -ENODEV;
9106 }
78f81cc4 9107
54ae1501
HMH		 9108 ret = platform_driver_register(&tpacpi_pdriver);
9109 if (ret) {
0978e012 9110 pr_err("unable to register main platform driver\n");
54ae1501
HMH		 9111 thinkpad_acpi_module_exit();
9112 return ret;
9113 }
ac36393d
HMH		 9114 tp_features.platform_drv_registered = 1;
9115
7fd40029
HMH		 9116 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
9117 if (ret) {
0978e012 9118 pr_err("unable to register hwmon platform driver\n");
7fd40029
HMH		 9119 thinkpad_acpi_module_exit();
9120 return ret;
9121 }
9122 tp_features.sensors_pdrv_registered = 1;
9123
176750d6 9124 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 9125 if (!ret) {
9126 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 9127 ret = tpacpi_create_driver_attributes(
9128 &tpacpi_hwmon_pdriver.driver);
2369cc94 9129 }
176750d6 9130 if (ret) {
0978e012 9131 pr_err("unable to create sysfs driver attributes\n");
176750d6
HMH		 9132 thinkpad_acpi_module_exit();
9133 return ret;
9134 }
2369cc94 9135 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 9136
54ae1501
HMH		 9137
9138 /* Device initialization */
e0c7dfe7 9139 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 9140 NULL, 0);
9141 if (IS_ERR(tpacpi_pdev)) {
9142 ret = PTR_ERR(tpacpi_pdev);
9143 tpacpi_pdev = NULL;
0978e012 9144 pr_err("unable to register platform device\n");
54ae1501
HMH		 9145 thinkpad_acpi_module_exit();
9146 return ret;
9147 }
7fd40029 9148 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 9149 TPACPI_HWMON_DRVR_NAME,
9150 -1, NULL, 0);
7fd40029
HMH		 9151 if (IS_ERR(tpacpi_sensors_pdev)) {
9152 ret = PTR_ERR(tpacpi_sensors_pdev);
9153 tpacpi_sensors_pdev = NULL;
0978e012 9154 pr_err("unable to register hwmon platform device\n");
7fd40029
HMH		 9155 thinkpad_acpi_module_exit();
9156 return ret;
9157 }
9158 ret = device_create_file(&tpacpi_sensors_pdev->dev,
9159 &dev_attr_thinkpad_acpi_pdev_name);
9160 if (ret) {
0978e012 9161 pr_err("unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 9162 thinkpad_acpi_module_exit();
9163 return ret;
9164 }
9165 tp_features.sensors_pdev_attrs_registered = 1;
9166 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 9167 if (IS_ERR(tpacpi_hwmon)) {
9168 ret = PTR_ERR(tpacpi_hwmon);
9169 tpacpi_hwmon = NULL;
0978e012 9170 pr_err("unable to register hwmon device\n");
54ae1501
HMH		 9171 thinkpad_acpi_module_exit();
9172 return ret;
9173 }
8523ed6f 9174 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 9175 tpacpi_inputdev = input_allocate_device();
9176 if (!tpacpi_inputdev) {
7f5d1cd6
HMH		 9177 thinkpad_acpi_module_exit();
9178 return -ENOMEM;
9179 } else {
9180 /* Prepare input device, but don't register */
9181 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 9182 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 9183 tpacpi_inputdev->id.bustype = BUS_HOST;
e28393c0 9184 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
7f5d1cd6
HMH		 9185 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
9186 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 9187 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 9188 }
77775838
HMH		 9189
9190 /* Init subdriver dependencies */
9191 tpacpi_detect_brightness_capabilities();
9192
9193 /* Init subdrivers */
a5763f22
HMH		 9194 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
9195 ret = ibm_init(&ibms_init[i]);
9196 if (ret >= 0 && *ibms_init[i].param)
9197 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 9198 if (ret < 0) {
1def7115 9199 thinkpad_acpi_module_exit();
1da177e4
LT		 9200 return ret;
9201 }
9202 }
b589ea4c
HMH		 9203
9204 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
9205
7f5d1cd6
HMH		 9206 ret = input_register_device(tpacpi_inputdev);
9207 if (ret < 0) {
0978e012 9208 pr_err("unable to register input device\n");
7f5d1cd6
HMH		 9209 thinkpad_acpi_module_exit();
9210 return ret;
9211 } else {
9212 tp_features.input_device_registered = 1;
9213 }
1da177e4
LT		 9214
9215 return 0;
9216}
9217
95e57ab2
HMH		 9218MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
9219
922fe097
HMH		 9220/*
9221 * This will autoload the driver in almost every ThinkPad
9222 * in widespread use.
9223 *
9224 * Only _VERY_ old models, like the 240, 240x and 570 lack
9225 * the HKEY event interface.
9226 */
9227MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
9228
f68080f8
HMH		 9229/*
9230 * DMI matching for module autoloading
9231 *
9232 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9233 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9234 *
9235 * Only models listed in thinkwiki will be supported, so add yours
9236 * if it is not there yet.
9237 */
9238#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 9239 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 9240
f68080f8
HMH		 9241/* Ancient thinkpad BIOSes have to be identified by
9242 * BIOS type or model number, and there are far less
9243 * BIOS types than model numbers... */
922fe097 9244IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 9245
f68f53a2
HMH		 9246MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9247MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 9248MODULE_DESCRIPTION(TPACPI_DESC);
9249MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 9250MODULE_LICENSE("GPL");
9251
1def7115
HMH		 9252module_init(thinkpad_acpi_module_init);
9253module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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