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thinkpad_acpi: Add adaptive_kbd_mode sysfs attr
[deliverable/linux.git] / drivers / platform / x86 / thinkpad_acpi.c
CommitLineData
1da177e4 1/*
643f12db 2 * thinkpad_acpi.c - ThinkPad ACPI Extras
1da177e4
LT		 3 *
4 *
78f81cc4 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
1c762ca4 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
1da177e4
LT		 7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
a62bc916
HMH		 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
78f81cc4
BD		 22 */
23
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 */
67ab6248 199 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */
2d43f671 200
67bcae6e
HMH		 201 /* Thermal events */
202 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
203 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
204 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
205 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
206 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */
207
6f62bc3e
RH		 208 /* AC-related events */
209 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */
2d43f671 210
67bcae6e
HMH		 211 /* Misc */
212 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
213};
214
b21a15f6
HMH		 215/****************************************************************************
216 * Main driver
217 */
218
e0c7dfe7
HMH		 219#define TPACPI_NAME "thinkpad"
220#define TPACPI_DESC "ThinkPad ACPI Extras"
221#define TPACPI_FILE TPACPI_NAME "_acpi"
222#define TPACPI_URL "http://ibm-acpi.sf.net/"
223#define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
b21a15f6 224
e0c7dfe7
HMH		 225#define TPACPI_PROC_DIR "ibm"
226#define TPACPI_ACPI_EVENT_PREFIX "ibm"
227#define TPACPI_DRVR_NAME TPACPI_FILE
95e57ab2 228#define TPACPI_DRVR_SHORTNAME "tpacpi"
e0c7dfe7 229#define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
b21a15f6 230
95e57ab2 231#define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
e0e3c061 232#define TPACPI_WORKQUEUE_NAME "ktpacpid"
95e57ab2 233
e0c7dfe7 234#define TPACPI_MAX_ACPI_ARGS 3
b21a15f6 235
7ff8d62f 236/* Debugging printk groups */
0c78039f 237#define TPACPI_DBG_ALL 0xffff
73a94d86 238#define TPACPI_DBG_DISCLOSETASK 0x8000
0c78039f
HMH		 239#define TPACPI_DBG_INIT 0x0001
240#define TPACPI_DBG_EXIT 0x0002
bee4cd9b 241#define TPACPI_DBG_RFKILL 0x0004
56e2c200 242#define TPACPI_DBG_HKEY 0x0008
74a60c0f 243#define TPACPI_DBG_FAN 0x0010
0e501834 244#define TPACPI_DBG_BRGHT 0x0020
329e4e18 245#define TPACPI_DBG_MIXER 0x0040
0c78039f 246
35ff8b9f
HMH		 247#define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
248#define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
249#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
0c78039f 250
0c78039f
HMH		 251
252/****************************************************************************
b21a15f6 253 * Driver-wide structs and misc. variables
0c78039f
HMH		 254 */
255
256struct ibm_struct;
257
258struct tp_acpi_drv_struct {
259 const struct acpi_device_id *hid;
260 struct acpi_driver *driver;
261
262 void (*notify) (struct ibm_struct *, u32);
263 acpi_handle *handle;
264 u32 type;
265 struct acpi_device *device;
266};
267
268struct ibm_struct {
269 char *name;
270
887965e6 271 int (*read) (struct seq_file *);
0c78039f
HMH		 272 int (*write) (char *);
273 void (*exit) (void);
274 void (*resume) (void);
fd3c3a42 275 void (*suspend) (void);
90d9d3c7 276 void (*shutdown) (void);
0c78039f
HMH		 277
278 struct list_head all_drivers;
279
280 struct tp_acpi_drv_struct *acpi;
281
282 struct {
283 u8 acpi_driver_registered:1;
284 u8 acpi_notify_installed:1;
285 u8 proc_created:1;
286 u8 init_called:1;
287 u8 experimental:1;
288 } flags;
289};
290
291struct ibm_init_struct {
292 char param[32];
293
294 int (*init) (struct ibm_init_struct *);
d161a13f 295 umode_t base_procfs_mode;
0c78039f
HMH		 296 struct ibm_struct *data;
297};
298
299static struct {
0c78039f
HMH		 300 u32 bluetooth:1;
301 u32 hotkey:1;
302 u32 hotkey_mask:1;
303 u32 hotkey_wlsw:1;
6c231bd5 304 u32 hotkey_tablet:1;
0c78039f
HMH		 305 u32 light:1;
306 u32 light_status:1;
b5972796 307 u32 bright_acpimode:1;
77775838 308 u32 bright_unkfw:1;
0c78039f 309 u32 wan:1;
0045c0aa 310 u32 uwb:1;
0c78039f 311 u32 fan_ctrl_status_undef:1;
d7377247 312 u32 second_fan:1;
60201732 313 u32 beep_needs_two_args:1;
a112ceee 314 u32 mixer_no_level_control:1;
0c78039f
HMH		 315 u32 input_device_registered:1;
316 u32 platform_drv_registered:1;
317 u32 platform_drv_attrs_registered:1;
318 u32 sensors_pdrv_registered:1;
319 u32 sensors_pdrv_attrs_registered:1;
320 u32 sensors_pdev_attrs_registered:1;
321 u32 hotkey_poll_active:1;
f23a5bcb 322 u32 has_adaptive_kbd:1;
0c78039f
HMH		 323} tp_features;
324
92889022
HMH		 325static struct {
326 u16 hotkey_mask_ff:1;
c7ac6291 327 u16 volume_ctrl_forbidden:1;
92889022
HMH		 328} tp_warned;
329
0c78039f
HMH		 330struct thinkpad_id_data {
331 unsigned int vendor; /* ThinkPad vendor:
332 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
333
334 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
335 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
336
050df107 337 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
0c78039f 338 u16 ec_model;
050df107
HMH		 339 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
340 u16 ec_release;
0c78039f 341
8c74adbc
HMH		 342 char *model_str; /* ThinkPad T43 */
343 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 344};
0c78039f
HMH		 345static struct thinkpad_id_data thinkpad_id;
346
8fef502e
HMH		 347static enum {
348 TPACPI_LIFE_INIT = 0,
349 TPACPI_LIFE_RUNNING,
350 TPACPI_LIFE_EXITING,
351} tpacpi_lifecycle;
352
b21a15f6
HMH		 353static int experimental;
354static u32 dbg_level;
355
e0e3c061
HMH		 356static struct workqueue_struct *tpacpi_wq;
357
75bd3bf2
HMH		 358enum led_status_t {
359 TPACPI_LED_OFF = 0,
360 TPACPI_LED_ON,
361 TPACPI_LED_BLINK,
362};
363
4fa6811b
HMH		 364/* Special LED class that can defer work */
365struct tpacpi_led_classdev {
366 struct led_classdev led_classdev;
367 struct work_struct work;
75bd3bf2 368 enum led_status_t new_state;
edf2d778 369 int led;
4fa6811b
HMH		 370};
371
77775838
HMH		 372/* brightness level capabilities */
373static unsigned int bright_maxlvl; /* 0 = unknown */
374
a73f3091
HMH		 375#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
376static int dbg_wlswemul;
90ab5ee9 377static bool tpacpi_wlsw_emulstate;
a73f3091 378static int dbg_bluetoothemul;
90ab5ee9 379static bool tpacpi_bluetooth_emulstate;
a73f3091 380static int dbg_wwanemul;
90ab5ee9 381static bool tpacpi_wwan_emulstate;
0045c0aa 382static int dbg_uwbemul;
90ab5ee9 383static bool tpacpi_uwb_emulstate;
a73f3091
HMH		 384#endif
385
386
3dcc2c3b
HMH		 387/*************************************************************************
388 * Debugging helpers
389 */
390
0978e012
JP		 391#define dbg_printk(a_dbg_level, format, arg...) \
392do { \
393 if (dbg_level & (a_dbg_level)) \
394 printk(KERN_DEBUG pr_fmt("%s: " format), \
395 __func__, ##arg); \
396} while (0)
3dcc2c3b
HMH		 397
398#ifdef CONFIG_THINKPAD_ACPI_DEBUG
399#define vdbg_printk dbg_printk
400static const char *str_supported(int is_supported);
401#else
0978e012
JP		 402static inline const char *str_supported(int is_supported) { return ""; }
403#define vdbg_printk(a_dbg_level, format, arg...) \
404 no_printk(format, ##arg)
3dcc2c3b
HMH		 405#endif
406
73a94d86
HMH		 407static void tpacpi_log_usertask(const char * const what)
408{
0978e012
JP		 409 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
410 what, task_tgid_vnr(current));
73a94d86
HMH		 411}
412
0978e012
JP		 413#define tpacpi_disclose_usertask(what, format, arg...) \
414do { \
415 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
416 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
417 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
418 what, task_tgid_vnr(current), ## arg); \
419 } \
420} while (0)
3dcc2c3b 421
7d95a3d5
HMH		 422/*
423 * Quirk handling helpers
424 *
425 * ThinkPad IDs and versions seen in the field so far
426 * are two-characters from the set [0-9A-Z], i.e. base 36.
427 *
428 * We use values well outside that range as specials.
429 */
430
431#define TPACPI_MATCH_ANY 0xffffU
432#define TPACPI_MATCH_UNKNOWN 0U
433
434/* TPID('1', 'Y') == 0x5931 */
435#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
436
437#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
438 { .vendor = PCI_VENDOR_ID_IBM, \
439 .bios = TPID(__id1, __id2), \
440 .ec = TPACPI_MATCH_ANY, \
441 .quirks = (__quirk) }
442
443#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
444 { .vendor = PCI_VENDOR_ID_LENOVO, \
445 .bios = TPID(__id1, __id2), \
446 .ec = TPACPI_MATCH_ANY, \
447 .quirks = (__quirk) }
448
a112ceee
HMH		 449#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
450 { .vendor = PCI_VENDOR_ID_LENOVO, \
451 .bios = TPACPI_MATCH_ANY, \
452 .ec = TPID(__id1, __id2), \
453 .quirks = (__quirk) }
454
7d95a3d5
HMH		 455struct tpacpi_quirk {
456 unsigned int vendor;
457 u16 bios;
458 u16 ec;
459 unsigned long quirks;
460};
461
462/**
463 * tpacpi_check_quirks() - search BIOS/EC version on a list
464 * @qlist: array of &struct tpacpi_quirk
465 * @qlist_size: number of elements in @qlist
466 *
467 * Iterates over a quirks list until one is found that matches the
468 * ThinkPad's vendor, BIOS and EC model.
469 *
470 * Returns 0 if nothing matches, otherwise returns the quirks field of
471 * the matching &struct tpacpi_quirk entry.
472 *
473 * The match criteria is: vendor, ec and bios much match.
474 */
475static unsigned long __init tpacpi_check_quirks(
476 const struct tpacpi_quirk *qlist,
477 unsigned int qlist_size)
478{
479 while (qlist_size) {
480 if ((qlist->vendor == thinkpad_id.vendor ||
481 qlist->vendor == TPACPI_MATCH_ANY) &&
482 (qlist->bios == thinkpad_id.bios_model ||
483 qlist->bios == TPACPI_MATCH_ANY) &&
484 (qlist->ec == thinkpad_id.ec_model ||
485 qlist->ec == TPACPI_MATCH_ANY))
486 return qlist->quirks;
487
488 qlist_size--;
489 qlist++;
490 }
491 return 0;
492}
493
e28393c0
HMH		 494static inline bool __pure __init tpacpi_is_lenovo(void)
495{
496 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
497}
498
499static inline bool __pure __init tpacpi_is_ibm(void)
500{
501 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
502}
7d95a3d5 503
56b6aeb0
HMH		 504/****************************************************************************
505 ****************************************************************************
506 *
507 * ACPI Helpers and device model
508 *
509 ****************************************************************************
510 ****************************************************************************/
511
512/*************************************************************************
513 * ACPI basic handles
514 */
1da177e4 515
94954cc6 516static acpi_handle root_handle;
437e470c 517static acpi_handle ec_handle;
1da177e4 518
e0c7dfe7 519#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4 520 static acpi_handle object##_handle; \
3bd01896 521 static const acpi_handle * const object##_parent __initconst = \
ef07a5ab
HMH		 522 &parent##_handle; \
523 static char *object##_paths[] __initdata = { paths }
1da177e4 524
e0c7dfe7
HMH		 525TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
526TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 527
35ff8b9f
HMH		 528TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
529 /* T4x, X31, X40 */
78f81cc4
BD		 530 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
531 "\\CMS", /* R40, R40e */
56b6aeb0 532 ); /* all others */
78f81cc4 533
e0c7dfe7 534TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 535 "^HKEY", /* R30, R31 */
536 "HKEY", /* all others */
56b6aeb0 537 ); /* 570 */
78f81cc4 538
56b6aeb0
HMH		 539/*************************************************************************
540 * ACPI helpers
a8b7a662
HMH		 541 */
542
1da177e4 543static int acpi_evalf(acpi_handle handle,
eceeb437 544 int *res, char *method, char *fmt, ...)
1da177e4
LT		 545{
546 char *fmt0 = fmt;
78f81cc4 547 struct acpi_object_list params;
e0c7dfe7 548 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 549 struct acpi_buffer result, *resultp;
550 union acpi_object out_obj;
551 acpi_status status;
552 va_list ap;
553 char res_type;
554 int success;
555 int quiet;
1da177e4
LT		 556
557 if (!*fmt) {
0978e012 558 pr_err("acpi_evalf() called with empty format\n");
1da177e4
LT		 559 return 0;
560 }
561
562 if (*fmt == 'q') {
563 quiet = 1;
564 fmt++;
565 } else
566 quiet = 0;
567
568 res_type = *(fmt++);
569
570 params.count = 0;
571 params.pointer = &in_objs[0];
572
573 va_start(ap, fmt);
574 while (*fmt) {
575 char c = *(fmt++);
576 switch (c) {
577 case 'd': /* int */
578 in_objs[params.count].integer.value = va_arg(ap, int);
579 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
580 break;
78f81cc4 581 /* add more types as needed */
1da177e4 582 default:
0978e012 583 pr_err("acpi_evalf() called "
1da177e4 584 "with invalid format character '%c'\n", c);
21365851 585 va_end(ap);
1da177e4
LT		 586 return 0;
587 }
588 }
589 va_end(ap);
590
78f81cc4
BD		 591 if (res_type != 'v') {
592 result.length = sizeof(out_obj);
593 result.pointer = &out_obj;
594 resultp = &result;
595 } else
596 resultp = NULL;
1da177e4 597
78f81cc4 598 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 599
600 switch (res_type) {
78f81cc4 601 case 'd': /* int */
263f4a30
HMH		 602 success = (status == AE_OK &&
603 out_obj.type == ACPI_TYPE_INTEGER);
604 if (success && res)
eceeb437 605 *res = out_obj.integer.value;
1da177e4 606 break;
78f81cc4 607 case 'v': /* void */
1da177e4
LT		 608 success = status == AE_OK;
609 break;
78f81cc4 610 /* add more types as needed */
1da177e4 611 default:
0978e012 612 pr_err("acpi_evalf() called "
1da177e4
LT		 613 "with invalid format character '%c'\n", res_type);
614 return 0;
615 }
616
56b6aeb0 617 if (!success && !quiet)
0978e012 618 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
263f4a30 619 method, fmt0, acpi_format_exception(status));
56b6aeb0
HMH		 620
621 return success;
622}
623
35ff8b9f 624static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 625{
626 int v;
627
628 if (ecrd_handle) {
629 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
630 return 0;
631 *p = v;
632 } else {
633 if (ec_read(i, p) < 0)
634 return 0;
635 }
636
637 return 1;
638}
639
640static int acpi_ec_write(int i, u8 v)
641{
642 if (ecwr_handle) {
643 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
644 return 0;
645 } else {
646 if (ec_write(i, v) < 0)
647 return 0;
648 }
649
650 return 1;
651}
652
c9bea99c
HMH		 653static int issue_thinkpad_cmos_command(int cmos_cmd)
654{
655 if (!cmos_handle)
656 return -ENXIO;
657
658 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
659 return -EIO;
660
661 return 0;
662}
663
56b6aeb0
HMH		 664/*************************************************************************
665 * ACPI device model
666 */
667
35ff8b9f
HMH		 668#define TPACPI_ACPIHANDLE_INIT(object) \
669 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
ef07a5ab 670 object##_paths, ARRAY_SIZE(object##_paths))
f74a27d4 671
ef07a5ab
HMH		 672static void __init drv_acpi_handle_init(const char *name,
673 acpi_handle *handle, const acpi_handle parent,
674 char **paths, const int num_paths)
56b6aeb0
HMH		 675{
676 int i;
677 acpi_status status;
678
5ae930e6
HMH		 679 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
680 name);
681
56b6aeb0
HMH		 682 for (i = 0; i < num_paths; i++) {
683 status = acpi_get_handle(parent, paths[i], handle);
684 if (ACPI_SUCCESS(status)) {
5ae930e6
HMH		 685 dbg_printk(TPACPI_DBG_INIT,
686 "Found ACPI handle %s for %s\n",
ef07a5ab 687 paths[i], name);
56b6aeb0
HMH		 688 return;
689 }
690 }
691
5ae930e6
HMH		 692 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
693 name);
56b6aeb0
HMH		 694 *handle = NULL;
695}
696
437e470c
HMH		 697static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
698 u32 level, void *context, void **return_value)
699{
46445b6b
AL		 700 struct acpi_device *dev;
701 if (!strcmp(context, "video")) {
702 if (acpi_bus_get_device(handle, &dev))
703 return AE_OK;
704 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
705 return AE_OK;
706 }
707
437e470c
HMH		 708 *(acpi_handle *)return_value = handle;
709
710 return AE_CTRL_TERMINATE;
711}
712
713static void __init tpacpi_acpi_handle_locate(const char *name,
714 const char *hid,
715 acpi_handle *handle)
716{
717 acpi_status status;
718 acpi_handle device_found;
719
46445b6b 720 BUG_ON(!name || !handle);
437e470c
HMH		 721 vdbg_printk(TPACPI_DBG_INIT,
722 "trying to locate ACPI handle for %s, using HID %s\n",
46445b6b 723 name, hid ? hid : "NULL");
437e470c
HMH		 724
725 memset(&device_found, 0, sizeof(device_found));
726 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
727 (void *)name, &device_found);
728
729 *handle = NULL;
730
731 if (ACPI_SUCCESS(status)) {
732 *handle = device_found;
733 dbg_printk(TPACPI_DBG_INIT,
734 "Found ACPI handle for %s\n", name);
735 } else {
736 vdbg_printk(TPACPI_DBG_INIT,
737 "Could not locate an ACPI handle for %s: %s\n",
738 name, acpi_format_exception(status));
739 }
740}
741
8d376cd6 742static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 743{
744 struct ibm_struct *ibm = data;
745
8fef502e
HMH		 746 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
747 return;
748
8d376cd6 749 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 750 return;
751
8d376cd6 752 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 753}
754
8d376cd6 755static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 756{
757 acpi_status status;
5ae930e6 758 int rc;
56b6aeb0 759
8d376cd6
HMH		 760 BUG_ON(!ibm->acpi);
761
762 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 763 return 0;
764
5ae930e6 765 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 766 "setting up ACPI notify for %s\n", ibm->name);
767
5ae930e6
HMH		 768 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
769 if (rc < 0) {
0978e012 770 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc);
56b6aeb0
HMH		 771 return -ENODEV;
772 }
773
db89b4f0 774 ibm->acpi->device->driver_data = ibm;
8d376cd6 775 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 776 TPACPI_ACPI_EVENT_PREFIX,
643f12db 777 ibm->name);
56b6aeb0 778
8d376cd6
HMH		 779 status = acpi_install_notify_handler(*ibm->acpi->handle,
780 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 781 if (ACPI_FAILURE(status)) {
782 if (status == AE_ALREADY_EXISTS) {
0978e012
JP		 783 pr_notice("another device driver is already "
784 "handling %s events\n", ibm->name);
56b6aeb0 785 } else {
0978e012 786 pr_err("acpi_install_notify_handler(%s) failed: %s\n",
72f19921 787 ibm->name, acpi_format_exception(status));
56b6aeb0
HMH		 788 }
789 return -ENODEV;
790 }
8d376cd6 791 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 792 return 0;
793}
794
8d376cd6 795static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 796{
797 return 0;
798}
799
6700121b 800static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 801{
5ae930e6 802 int rc;
56b6aeb0 803
fe08bc4b
HMH		 804 dbg_printk(TPACPI_DBG_INIT,
805 "registering %s as an ACPI driver\n", ibm->name);
806
8d376cd6
HMH		 807 BUG_ON(!ibm->acpi);
808
809 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
810 if (!ibm->acpi->driver) {
0978e012 811 pr_err("failed to allocate memory for ibm->acpi->driver\n");
5fba344c 812 return -ENOMEM;
56b6aeb0
HMH		 813 }
814
e0c7dfe7 815 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 816 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 817
8d376cd6 818 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 819
5ae930e6
HMH		 820 rc = acpi_bus_register_driver(ibm->acpi->driver);
821 if (rc < 0) {
0978e012 822 pr_err("acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 823 ibm->name, rc);
8d376cd6
HMH		 824 kfree(ibm->acpi->driver);
825 ibm->acpi->driver = NULL;
5ae930e6 826 } else if (!rc)
8d376cd6 827 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 828
5ae930e6 829 return rc;
56b6aeb0
HMH		 830}
831
832
833/****************************************************************************
834 ****************************************************************************
835 *
836 * Procfs Helpers
837 *
838 ****************************************************************************
839 ****************************************************************************/
840
887965e6 841static int dispatch_proc_show(struct seq_file *m, void *v)
56b6aeb0 842{
887965e6 843 struct ibm_struct *ibm = m->private;
56b6aeb0
HMH		 844
845 if (!ibm || !ibm->read)
846 return -EINVAL;
887965e6
AD		 847 return ibm->read(m);
848}
56b6aeb0 849
887965e6
AD		 850static int dispatch_proc_open(struct inode *inode, struct file *file)
851{
d9dda78b 852 return single_open(file, dispatch_proc_show, PDE_DATA(inode));
56b6aeb0
HMH		 853}
854
887965e6 855static ssize_t dispatch_proc_write(struct file *file,
35ff8b9f 856 const char __user *userbuf,
887965e6 857 size_t count, loff_t *pos)
56b6aeb0 858{
d9dda78b 859 struct ibm_struct *ibm = PDE_DATA(file_inode(file));
56b6aeb0
HMH		 860 char *kernbuf;
861 int ret;
862
863 if (!ibm || !ibm->write)
864 return -EINVAL;
5b05d469
MB		 865 if (count > PAGE_SIZE - 2)
866 return -EINVAL;
56b6aeb0
HMH		 867
868 kernbuf = kmalloc(count + 2, GFP_KERNEL);
869 if (!kernbuf)
870 return -ENOMEM;
1da177e4 871
56b6aeb0
HMH		 872 if (copy_from_user(kernbuf, userbuf, count)) {
873 kfree(kernbuf);
874 return -EFAULT;
875 }
1da177e4 876
56b6aeb0
HMH		 877 kernbuf[count] = 0;
878 strcat(kernbuf, ",");
879 ret = ibm->write(kernbuf);
880 if (ret == 0)
881 ret = count;
1da177e4 882
56b6aeb0
HMH		 883 kfree(kernbuf);
884
885 return ret;
1da177e4
LT		 886}
887
887965e6
AD		 888static const struct file_operations dispatch_proc_fops = {
889 .owner = THIS_MODULE,
890 .open = dispatch_proc_open,
891 .read = seq_read,
892 .llseek = seq_lseek,
893 .release = single_release,
894 .write = dispatch_proc_write,
895};
896
1da177e4
LT		 897static char *next_cmd(char **cmds)
898{
899 char *start = *cmds;
900 char *end;
901
902 while ((end = strchr(start, ',')) && end == start)
903 start = end + 1;
904
905 if (!end)
906 return NULL;
907
908 *end = 0;
909 *cmds = end + 1;
910 return start;
911}
912
56b6aeb0 913
54ae1501
HMH		 914/****************************************************************************
915 ****************************************************************************
916 *
7f5d1cd6 917 * Device model: input, hwmon and platform
54ae1501
HMH		 918 *
919 ****************************************************************************
920 ****************************************************************************/
921
94954cc6 922static struct platform_device *tpacpi_pdev;
7fd40029 923static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 924static struct device *tpacpi_hwmon;
7f5d1cd6 925static struct input_dev *tpacpi_inputdev;
8523ed6f 926static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 927static LIST_HEAD(tpacpi_all_drivers);
e295e850 928
3567a4e2 929#ifdef CONFIG_PM_SLEEP
4959a781 930static int tpacpi_suspend_handler(struct device *dev)
083f1760
HMH		 931{
932 struct ibm_struct *ibm, *itmp;
933
934 list_for_each_entry_safe(ibm, itmp,
935 &tpacpi_all_drivers,
936 all_drivers) {
937 if (ibm->suspend)
fd3c3a42 938 (ibm->suspend)();
083f1760
HMH		 939 }
940
941 return 0;
942}
943
4959a781 944static int tpacpi_resume_handler(struct device *dev)
e295e850
HMH		 945{
946 struct ibm_struct *ibm, *itmp;
947
948 list_for_each_entry_safe(ibm, itmp,
949 &tpacpi_all_drivers,
950 all_drivers) {
951 if (ibm->resume)
952 (ibm->resume)();
953 }
954
955 return 0;
956}
3567a4e2 957#endif
e295e850 958
4959a781
RW		 959static SIMPLE_DEV_PM_OPS(tpacpi_pm,
960 tpacpi_suspend_handler, tpacpi_resume_handler);
961
90d9d3c7
HMH		 962static void tpacpi_shutdown_handler(struct platform_device *pdev)
963{
964 struct ibm_struct *ibm, *itmp;
965
966 list_for_each_entry_safe(ibm, itmp,
967 &tpacpi_all_drivers,
968 all_drivers) {
969 if (ibm->shutdown)
970 (ibm->shutdown)();
971 }
972}
973
54ae1501
HMH		 974static struct platform_driver tpacpi_pdriver = {
975 .driver = {
e0c7dfe7 976 .name = TPACPI_DRVR_NAME,
4959a781 977 .pm = &tpacpi_pm,
54ae1501 978 },
90d9d3c7 979 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 980};
981
7fd40029
HMH		 982static struct platform_driver tpacpi_hwmon_pdriver = {
983 .driver = {
e0c7dfe7 984 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 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
2324#define TPACPI_COMPARE_KEY(__scancode, __member) \
a4d44ba1
BW		 2325do { \
2326 if ((event_mask & (1 << __scancode)) && \
2327 oldn->__member != newn->__member) \
2328 tpacpi_hotkey_send_key(__scancode); \
2329} while (0)
01e88f25
HMH		 2330
2331#define TPACPI_MAY_SEND_KEY(__scancode) \
a4d44ba1
BW		 2332do { \
2333 if (event_mask & (1 << __scancode)) \
2334 tpacpi_hotkey_send_key(__scancode); \
2335} while (0)
2336
2337static void issue_volchange(const unsigned int oldvol,
2338 const unsigned int newvol,
2339 const u32 event_mask)
2340{
2341 unsigned int i = oldvol;
2342
2343 while (i > newvol) {
2344 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2345 i--;
5d756db9 2346 }
a4d44ba1
BW		 2347 while (i < newvol) {
2348 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2349 i++;
2350 }
2351}
5d756db9 2352
a4d44ba1
BW		 2353static void issue_brightnesschange(const unsigned int oldbrt,
2354 const unsigned int newbrt,
2355 const u32 event_mask)
2356{
2357 unsigned int i = oldbrt;
28999022 2358
a4d44ba1
BW		 2359 while (i > newbrt) {
2360 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2361 i--;
28999022 2362 }
a4d44ba1
BW		 2363 while (i < newbrt) {
2364 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2365 i++;
2366 }
2367}
2368
2369static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2370 struct tp_nvram_state *newn,
2371 const u32 event_mask)
2372{
28999022 2373
01e88f25
HMH		 2374 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2375 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2376 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2377 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2378
2379 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2380
2381 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2382
5d756db9
HMH		 2383 /*
2384 * Handle volume
2385 *
2386 * This code is supposed to duplicate the IBM firmware behaviour:
2387 * - Pressing MUTE issues mute hotkey message, even when already mute
2388 * - Pressing Volume up/down issues volume up/down hotkey messages,
c8440336 2389 * even when already at maximum or minimum volume
5d756db9
HMH		 2390 * - The act of unmuting issues volume up/down notification,
2391 * depending which key was used to unmute
2392 *
2393 * We are constrained to what the NVRAM can tell us, which is not much
2394 * and certainly not enough if more than one volume hotkey was pressed
2395 * since the last poll cycle.
2396 *
2397 * Just to make our life interesting, some newer Lenovo ThinkPads have
2398 * bugs in the BIOS and may fail to update volume_toggle properly.
2399 */
2400 if (newn->mute) {
2401 /* muted */
2402 if (!oldn->mute ||
2403 oldn->volume_toggle != newn->volume_toggle ||
2404 oldn->volume_level != newn->volume_level) {
2405 /* recently muted, or repeated mute keypress, or
2406 * multiple presses ending in mute */
a4d44ba1
BW		 2407 issue_volchange(oldn->volume_level, newn->volume_level,
2408 event_mask);
01e88f25
HMH		 2409 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2410 }
5d756db9
HMH		 2411 } else {
2412 /* unmute */
2413 if (oldn->mute) {
2414 /* recently unmuted, issue 'unmute' keypress */
01e88f25 2415 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
5d756db9
HMH		 2416 }
2417 if (oldn->volume_level != newn->volume_level) {
a4d44ba1
BW		 2418 issue_volchange(oldn->volume_level, newn->volume_level,
2419 event_mask);
5d756db9
HMH		 2420 } else if (oldn->volume_toggle != newn->volume_toggle) {
2421 /* repeated vol up/down keypress at end of scale ? */
2422 if (newn->volume_level == 0)
01e88f25 2423 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
5d756db9
HMH		 2424 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
2425 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
01e88f25
HMH		 2426 }
2427 }
2428
2429 /* handle brightness */
28999022
HMH		 2430 if (oldn->brightness_level != newn->brightness_level) {
2431 issue_brightnesschange(oldn->brightness_level,
a4d44ba1 2432 newn->brightness_level, event_mask);
28999022
HMH		 2433 } else if (oldn->brightness_toggle != newn->brightness_toggle) {
2434 /* repeated key presses that didn't change state */
2435 if (newn->brightness_level == 0)
01e88f25 2436 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
28999022
HMH		 2437 else if (newn->brightness_level >= bright_maxlvl
2438 && !tp_features.bright_unkfw)
2439 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
01e88f25 2440 }
01e88f25
HMH		 2441
2442#undef TPACPI_COMPARE_KEY
2443#undef TPACPI_MAY_SEND_KEY
0d922e3b 2444}
01e88f25 2445
0d922e3b
HMH		 2446/*
2447 * Polling driver
2448 *
2449 * We track all events in hotkey_source_mask all the time, since
2450 * most of them are edge-based. We only issue those requested by
2451 * hotkey_user_mask or hotkey_driver_mask, though.
2452 */
01e88f25
HMH		 2453static int hotkey_kthread(void *data)
2454{
2455 struct tp_nvram_state s[2];
0d922e3b 2456 u32 poll_mask, event_mask;
01e88f25
HMH		 2457 unsigned int si, so;
2458 unsigned long t;
8a32c441 2459 unsigned int change_detector;
db25f16d 2460 unsigned int poll_freq;
8a32c441 2461 bool was_frozen;
01e88f25 2462
01e88f25
HMH		 2463 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2464 goto exit;
2465
2466 set_freezable();
2467
2468 so = 0;
2469 si = 1;
2470 t = 0;
2471
2472 /* Initial state for compares */
2473 mutex_lock(&hotkey_thread_data_mutex);
2474 change_detector = hotkey_config_change;
0d922e3b
HMH		 2475 poll_mask = hotkey_source_mask;
2476 event_mask = hotkey_source_mask &
2477 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2478 poll_freq = hotkey_poll_freq;
01e88f25 2479 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2480 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2481
db25f16d
HMH		 2482 while (!kthread_should_stop()) {
2483 if (t == 0) {
2484 if (likely(poll_freq))
2485 t = 1000/poll_freq;
2486 else
2487 t = 100; /* should never happen... */
2488 }
01e88f25 2489 t = msleep_interruptible(t);
8a32c441 2490 if (unlikely(kthread_freezable_should_stop(&was_frozen)))
01e88f25 2491 break;
8a32c441
TH		 2492
2493 if (t > 0 && !was_frozen)
01e88f25
HMH		 2494 continue;
2495
2496 mutex_lock(&hotkey_thread_data_mutex);
8a32c441 2497 if (was_frozen || hotkey_config_change != change_detector) {
01e88f25
HMH		 2498 /* forget old state on thaw or config change */
2499 si = so;
2500 t = 0;
2501 change_detector = hotkey_config_change;
2502 }
0d922e3b
HMH		 2503 poll_mask = hotkey_source_mask;
2504 event_mask = hotkey_source_mask &
2505 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2506 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2507 mutex_unlock(&hotkey_thread_data_mutex);
2508
0d922e3b
HMH		 2509 if (likely(poll_mask)) {
2510 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2511 if (likely(si != so)) {
2512 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2513 event_mask);
01e88f25
HMH		 2514 }
2515 }
2516
2517 so = si;
2518 si ^= 1;
2519 }
2520
2521exit:
01e88f25
HMH		 2522 return 0;
2523}
2524
db25f16d 2525/* call with hotkey_mutex held */
01e88f25
HMH		 2526static void hotkey_poll_stop_sync(void)
2527{
2528 if (tpacpi_hotkey_task) {
01e88f25
HMH		 2529 kthread_stop(tpacpi_hotkey_task);
2530 tpacpi_hotkey_task = NULL;
01e88f25
HMH		 2531 }
2532}
2533
2534/* call with hotkey_mutex held */
7f0cf712 2535static void hotkey_poll_setup(const bool may_warn)
01e88f25 2536{
0d922e3b
HMH		 2537 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2538 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2539
0d922e3b
HMH		 2540 if (hotkey_poll_freq > 0 &&
2541 (poll_driver_mask ||
2542 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2543 if (!tpacpi_hotkey_task) {
2544 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2545 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2546 if (IS_ERR(tpacpi_hotkey_task)) {
2547 tpacpi_hotkey_task = NULL;
0978e012 2548 pr_err("could not create kernel thread "
01e88f25
HMH		 2549 "for hotkey polling\n");
2550 }
2551 }
2552 } else {
2553 hotkey_poll_stop_sync();
0d922e3b 2554 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2555 hotkey_poll_freq == 0) {
0978e012
JP		 2556 pr_notice("hot keys 0x%08x and/or events 0x%08x "
2557 "require polling, which is currently "
2558 "disabled\n",
2559 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2560 }
2561 }
2562}
2563
7f0cf712 2564static void hotkey_poll_setup_safe(const bool may_warn)
01e88f25
HMH		 2565{
2566 mutex_lock(&hotkey_mutex);
2567 hotkey_poll_setup(may_warn);
2568 mutex_unlock(&hotkey_mutex);
2569}
2570
db25f16d
HMH		 2571/* call with hotkey_mutex held */
2572static void hotkey_poll_set_freq(unsigned int freq)
2573{
2574 if (!freq)
2575 hotkey_poll_stop_sync();
2576
db25f16d 2577 hotkey_poll_freq = freq;
db25f16d
HMH		 2578}
2579
1bc6b9cd
HMH		 2580#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2581
7f0cf712
HMH		 2582static void hotkey_poll_setup(const bool __unused)
2583{
2584}
2585
2586static void hotkey_poll_setup_safe(const bool __unused)
1bc6b9cd
HMH		 2587{
2588}
2589
2590#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2591
01e88f25
HMH		 2592static int hotkey_inputdev_open(struct input_dev *dev)
2593{
2594 switch (tpacpi_lifecycle) {
2595 case TPACPI_LIFE_INIT:
01e88f25 2596 case TPACPI_LIFE_RUNNING:
db25f16d 2597 hotkey_poll_setup_safe(false);
01e88f25 2598 return 0;
b589ea4c
HMH		 2599 case TPACPI_LIFE_EXITING:
2600 return -EBUSY;
01e88f25
HMH		 2601 }
2602
2603 /* Should only happen if tpacpi_lifecycle is corrupt */
2604 BUG();
2605 return -EBUSY;
2606}
2607
2608static void hotkey_inputdev_close(struct input_dev *dev)
2609{
2610 /* disable hotkey polling when possible */
b589ea4c 2611 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
0d922e3b 2612 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2613 hotkey_poll_setup_safe(false);
01e88f25 2614}
01e88f25 2615
a0416420
HMH		 2616/* sysfs hotkey enable ------------------------------------------------- */
2617static ssize_t hotkey_enable_show(struct device *dev,
2618 struct device_attribute *attr,
2619 char *buf)
2620{
ae92bd17 2621 int res, status;
a0416420 2622
2586d566
HMH		 2623 printk_deprecated_attribute("hotkey_enable",
2624 "Hotkey reporting is always enabled");
2625
b2c985e7 2626 res = hotkey_status_get(&status);
a0416420
HMH		 2627 if (res)
2628 return res;
2629
2630 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2631}
2632
2633static ssize_t hotkey_enable_store(struct device *dev,
2634 struct device_attribute *attr,
2635 const char *buf, size_t count)
2636{
2637 unsigned long t;
2586d566
HMH		 2638
2639 printk_deprecated_attribute("hotkey_enable",
2640 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2641
2642 if (parse_strtoul(buf, 1, &t))
2643 return -EINVAL;
2644
2586d566
HMH		 2645 if (t == 0)
2646 return -EPERM;
a0416420 2647
2586d566 2648 return count;
a0416420
HMH		 2649}
2650
2651static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 2652 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 2653 hotkey_enable_show, hotkey_enable_store);
2654
2655/* sysfs hotkey mask --------------------------------------------------- */
2656static ssize_t hotkey_mask_show(struct device *dev,
2657 struct device_attribute *attr,
2658 char *buf)
2659{
0d922e3b 2660 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2661}
2662
2663static ssize_t hotkey_mask_store(struct device *dev,
2664 struct device_attribute *attr,
2665 const char *buf, size_t count)
2666{
2667 unsigned long t;
b2c985e7 2668 int res;
a0416420 2669
ae92bd17 2670 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2671 return -EINVAL;
2672
7646ea88 2673 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2674 return -ERESTARTSYS;
2675
0d922e3b 2676 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2677
2678#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2679 hotkey_poll_setup(true);
01e88f25
HMH		 2680#endif
2681
b2c985e7 2682 mutex_unlock(&hotkey_mutex);
a0416420 2683
56e2c200
HMH		 2684 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2685
a0416420
HMH		 2686 return (res) ? res : count;
2687}
2688
2689static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 2690 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 2691 hotkey_mask_show, hotkey_mask_store);
2692
2693/* sysfs hotkey bios_enabled ------------------------------------------- */
2694static ssize_t hotkey_bios_enabled_show(struct device *dev,
2695 struct device_attribute *attr,
2696 char *buf)
2697{
2586d566 2698 return sprintf(buf, "0\n");
a0416420
HMH		 2699}
2700
2701static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 2702 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 2703
2704/* sysfs hotkey bios_mask ---------------------------------------------- */
2705static ssize_t hotkey_bios_mask_show(struct device *dev,
2706 struct device_attribute *attr,
2707 char *buf)
2708{
06777be6
HMH		 2709 printk_deprecated_attribute("hotkey_bios_mask",
2710 "This attribute is useless.");
ae92bd17 2711 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2712}
2713
2714static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 2715 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 2716
9b010de5
HMH		 2717/* sysfs hotkey all_mask ----------------------------------------------- */
2718static ssize_t hotkey_all_mask_show(struct device *dev,
2719 struct device_attribute *attr,
2720 char *buf)
2721{
01e88f25
HMH		 2722 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2723 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2724}
2725
2726static struct device_attribute dev_attr_hotkey_all_mask =
2727 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2728
2729/* sysfs hotkey recommended_mask --------------------------------------- */
2730static ssize_t hotkey_recommended_mask_show(struct device *dev,
2731 struct device_attribute *attr,
2732 char *buf)
2733{
2734 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2735 (hotkey_all_mask | hotkey_source_mask)
2736 & ~hotkey_reserved_mask);
9b010de5
HMH		 2737}
2738
2739static struct device_attribute dev_attr_hotkey_recommended_mask =
2740 __ATTR(hotkey_recommended_mask, S_IRUGO,
2741 hotkey_recommended_mask_show, NULL);
2742
01e88f25
HMH		 2743#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2744
2745/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2746static ssize_t hotkey_source_mask_show(struct device *dev,
2747 struct device_attribute *attr,
2748 char *buf)
2749{
2750 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2751}
2752
2753static ssize_t hotkey_source_mask_store(struct device *dev,
2754 struct device_attribute *attr,
2755 const char *buf, size_t count)
2756{
2757 unsigned long t;
0d922e3b
HMH		 2758 u32 r_ev;
2759 int rc;
01e88f25
HMH		 2760
2761 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2762 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2763 return -EINVAL;
2764
7646ea88 2765 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2766 return -ERESTARTSYS;
2767
2768 HOTKEY_CONFIG_CRITICAL_START
2769 hotkey_source_mask = t;
2770 HOTKEY_CONFIG_CRITICAL_END
2771
0d922e3b
HMH		 2772 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2773 ~hotkey_source_mask);
db25f16d 2774 hotkey_poll_setup(true);
0d922e3b
HMH		 2775
2776 /* check if events needed by the driver got disabled */
2777 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2778 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2779
2780 mutex_unlock(&hotkey_mutex);
2781
0d922e3b 2782 if (rc < 0)
0978e012
JP		 2783 pr_err("hotkey_source_mask: "
2784 "failed to update the firmware event mask!\n");
0d922e3b
HMH		 2785
2786 if (r_ev)
0978e012
JP		 2787 pr_notice("hotkey_source_mask: "
2788 "some important events were disabled: 0x%04x\n",
2789 r_ev);
0d922e3b 2790
56e2c200
HMH		 2791 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2792
0d922e3b 2793 return (rc < 0) ? rc : count;
01e88f25
HMH		 2794}
2795
2796static struct device_attribute dev_attr_hotkey_source_mask =
2797 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2798 hotkey_source_mask_show, hotkey_source_mask_store);
2799
2800/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2801static ssize_t hotkey_poll_freq_show(struct device *dev,
2802 struct device_attribute *attr,
2803 char *buf)
2804{
2805 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2806}
2807
2808static ssize_t hotkey_poll_freq_store(struct device *dev,
2809 struct device_attribute *attr,
2810 const char *buf, size_t count)
2811{
2812 unsigned long t;
2813
2814 if (parse_strtoul(buf, 25, &t))
2815 return -EINVAL;
2816
7646ea88 2817 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2818 return -ERESTARTSYS;
2819
db25f16d
HMH		 2820 hotkey_poll_set_freq(t);
2821 hotkey_poll_setup(true);
01e88f25 2822
01e88f25
HMH		 2823 mutex_unlock(&hotkey_mutex);
2824
56e2c200
HMH		 2825 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2826
01e88f25
HMH		 2827 return count;
2828}
2829
2830static struct device_attribute dev_attr_hotkey_poll_freq =
2831 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2832 hotkey_poll_freq_show, hotkey_poll_freq_store);
2833
2834#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2835
50ebec09 2836/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2837static ssize_t hotkey_radio_sw_show(struct device *dev,
2838 struct device_attribute *attr,
2839 char *buf)
2840{
19d337df
JB		 2841 int res;
2842 res = hotkey_get_wlsw();
74941a69
HMH		 2843 if (res < 0)
2844 return res;
2845
19d337df
JB		 2846 /* Opportunistic update */
2847 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2848
2849 return snprintf(buf, PAGE_SIZE, "%d\n",
2850 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2851}
2852
2853static struct device_attribute dev_attr_hotkey_radio_sw =
2854 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2855
50ebec09
HMH		 2856static void hotkey_radio_sw_notify_change(void)
2857{
2858 if (tp_features.hotkey_wlsw)
2859 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2860 "hotkey_radio_sw");
2861}
2862
6c231bd5
HMH		 2863/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2864static ssize_t hotkey_tablet_mode_show(struct device *dev,
2865 struct device_attribute *attr,
2866 char *buf)
2867{
2868 int res, s;
2869 res = hotkey_get_tablet_mode(&s);
2870 if (res < 0)
2871 return res;
2872
2873 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2874}
2875
2876static struct device_attribute dev_attr_hotkey_tablet_mode =
2877 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2878
2879static void hotkey_tablet_mode_notify_change(void)
2880{
2881 if (tp_features.hotkey_tablet)
2882 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2883 "hotkey_tablet_mode");
2884}
2885
50ebec09 2886/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2887static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2888 struct device_attribute *attr,
2889 char *buf)
2890{
2891 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2892}
2893
2894static struct device_attribute dev_attr_hotkey_wakeup_reason =
2895 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2896
1d5a2b54 2897static void hotkey_wakeup_reason_notify_change(void)
50ebec09 2898{
0d922e3b
HMH		 2899 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2900 "wakeup_reason");
50ebec09
HMH		 2901}
2902
2903/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2904static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2905 struct device_attribute *attr,
2906 char *buf)
2907{
2908 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2909}
2910
2911static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2912 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2913 hotkey_wakeup_hotunplug_complete_show, NULL);
2914
1d5a2b54 2915static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 2916{
0d922e3b
HMH		 2917 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2918 "wakeup_hotunplug_complete");
50ebec09
HMH		 2919}
2920
b790ceeb
BN		 2921/* sysfs adaptive kbd mode --------------------------------------------- */
2922
2923static int adaptive_keyboard_get_mode(void);
2924static int adaptive_keyboard_set_mode(int new_mode);
2925
2926enum ADAPTIVE_KEY_MODE {
2927 HOME_MODE,
2928 WEB_BROWSER_MODE,
2929 WEB_CONFERENCE_MODE,
2930 FUNCTION_MODE,
2931 LAYFLAT_MODE
2932};
2933
2934static ssize_t adaptive_kbd_mode_show(struct device *dev,
2935 struct device_attribute *attr,
2936 char *buf)
2937{
2938 u32 current_mode;
2939
2940 current_mode = adaptive_keyboard_get_mode();
2941 if (current_mode < 0)
2942 return current_mode;
2943
2944 return snprintf(buf, PAGE_SIZE, "%d\n", current_mode);
2945}
2946
2947static ssize_t adaptive_kbd_mode_store(struct device *dev,
2948 struct device_attribute *attr,
2949 const char *buf, size_t count)
2950{
2951 unsigned long t;
2952 int res;
2953
2954 if (parse_strtoul(buf, LAYFLAT_MODE, &t))
2955 return -EINVAL;
2956
2957 res = adaptive_keyboard_set_mode(t);
2958 return (res < 0) ? res : count;
2959}
2960
2961static DEVICE_ATTR_RW(adaptive_kbd_mode);
2962
2963static struct attribute *adaptive_kbd_attributes[] = {
2964 &dev_attr_adaptive_kbd_mode.attr,
2965 NULL
2966};
2967
2968static const struct attribute_group adaptive_kbd_attr_group = {
2969 .attrs = adaptive_kbd_attributes,
2970};
2971
a0416420
HMH		 2972/* --------------------------------------------------------------------- */
2973
ff80f137
HMH		 2974static struct attribute *hotkey_attributes[] __initdata = {
2975 &dev_attr_hotkey_enable.attr,
01e88f25 2976 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 2977 &dev_attr_hotkey_bios_mask.attr,
0d922e3b
HMH		 2978 &dev_attr_hotkey_wakeup_reason.attr,
2979 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 2980 &dev_attr_hotkey_mask.attr,
2981 &dev_attr_hotkey_all_mask.attr,
2982 &dev_attr_hotkey_recommended_mask.attr,
0d922e3b 2983#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 2984 &dev_attr_hotkey_source_mask.attr,
2985 &dev_attr_hotkey_poll_freq.attr,
2986#endif
ff80f137
HMH		 2987};
2988
19d337df
JB		 2989/*
2990 * Sync both the hw and sw blocking state of all switches
2991 */
733e27c1
HMH		 2992static void tpacpi_send_radiosw_update(void)
2993{
2994 int wlsw;
2995
19d337df
JB		 2996 /*
2997 * We must sync all rfkill controllers *before* issuing any
2998 * rfkill input events, or we will race the rfkill core input
2999 * handler.
3000 *
c8440336 3001 * tpacpi_inputdev_send_mutex works as a synchronization point
19d337df
JB		 3002 * for the above.
3003 *
3004 * We optimize to avoid numerous calls to hotkey_get_wlsw.
3005 */
3006
3007 wlsw = hotkey_get_wlsw();
3008
3009 /* Sync hw blocking state first if it is hw-blocked */
3010 if (wlsw == TPACPI_RFK_RADIO_OFF)
3011 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 3012
19d337df
JB		 3013 /* Sync sw blocking state */
3014 tpacpi_rfk_update_swstate_all();
3015
3016 /* Sync hw blocking state last if it is hw-unblocked */
3017 if (wlsw == TPACPI_RFK_RADIO_ON)
3018 tpacpi_rfk_update_hwblock_state(false);
3019
3020 /* Issue rfkill input event for WLSW switch */
3021 if (!(wlsw < 0)) {
733e27c1
HMH		 3022 mutex_lock(&tpacpi_inputdev_send_mutex);
3023
3024 input_report_switch(tpacpi_inputdev,
19d337df 3025 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 3026 input_sync(tpacpi_inputdev);
3027
3028 mutex_unlock(&tpacpi_inputdev_send_mutex);
3029 }
19d337df
JB		 3030
3031 /*
3032 * this can be unconditional, as we will poll state again
3033 * if userspace uses the notify to read data
3034 */
733e27c1
HMH		 3035 hotkey_radio_sw_notify_change();
3036}
3037
9c0a76e1
HMH		 3038static void hotkey_exit(void)
3039{
3040#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 3041 mutex_lock(&hotkey_mutex);
9c0a76e1 3042 hotkey_poll_stop_sync();
db25f16d 3043 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 3044#endif
3045
3046 if (hotkey_dev_attributes)
3047 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3048
4be73005 3049 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 3050 "restoring original HKEY status and mask\n");
3051 /* yes, there is a bitwise or below, we want the
3052 * functions to be called even if one of them fail */
3053 if (((tp_features.hotkey_mask &&
3054 hotkey_mask_set(hotkey_orig_mask)) |
3055 hotkey_status_set(false)) != 0)
0978e012 3056 pr_err("failed to restore hot key mask "
4be73005 3057 "to BIOS defaults\n");
9c0a76e1
HMH		 3058}
3059
de4c8cc7
HMH		 3060static void __init hotkey_unmap(const unsigned int scancode)
3061{
3062 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3063 clear_bit(hotkey_keycode_map[scancode],
3064 tpacpi_inputdev->keybit);
3065 hotkey_keycode_map[scancode] = KEY_RESERVED;
3066 }
3067}
3068
0d922e3b
HMH		 3069/*
3070 * HKEY quirks:
3071 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3072 */
3073
3074#define TPACPI_HK_Q_INIMASK 0x0001
3075
3076static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3077 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3078 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3079 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3080 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3081 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3082 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3083 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3084 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3085 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3086 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3087 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3088 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3089 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3090 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3091 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3092 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3093 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3094 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3095 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3096};
3097
fc6e7568
HMH		 3098typedef u16 tpacpi_keymap_entry_t;
3099typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
d1e14dca 3100
a5763f22 3101static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3102{
0f089147
HMH		 3103 /* Requirements for changing the default keymaps:
3104 *
3105 * 1. Many of the keys are mapped to KEY_RESERVED for very
3106 * good reasons. Do not change them unless you have deep
3107 * knowledge on the IBM and Lenovo ThinkPad firmware for
3108 * the various ThinkPad models. The driver behaves
3109 * differently for KEY_RESERVED: such keys have their
3110 * hot key mask *unset* in mask_recommended, and also
3111 * in the initial hot key mask programmed into the
3112 * firmware at driver load time, which means the firm-
3113 * ware may react very differently if you change them to
3114 * something else;
3115 *
3116 * 2. You must be subscribed to the linux-thinkpad and
3117 * ibm-acpi-devel mailing lists, and you should read the
3118 * list archives since 2007 if you want to change the
3119 * keymaps. This requirement exists so that you will
3120 * know the past history of problems with the thinkpad-
3121 * acpi driver keymaps, and also that you will be
3122 * listening to any bug reports;
3123 *
3124 * 3. Do not send thinkpad-acpi specific patches directly to
3125 * for merging, *ever*. Send them to the linux-acpi
3126 * mailinglist for comments. Merging is to be done only
3127 * through acpi-test and the ACPI maintainer.
3128 *
3129 * If the above is too much to ask, don't change the keymap.
3130 * Ask the thinkpad-acpi maintainer to do it, instead.
3131 */
d1e14dca
HMH		 3132
3133 enum keymap_index {
3134 TPACPI_KEYMAP_IBM_GENERIC = 0,
3135 TPACPI_KEYMAP_LENOVO_GENERIC,
3136 };
3137
3138 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
3139 /* Generic keymap for IBM ThinkPads */
3140 [TPACPI_KEYMAP_IBM_GENERIC] = {
edf0e0e5 3141 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
d1e14dca 3142 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
edf0e0e5
HMH		 3143 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3144 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3145
3146 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3147 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3148 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3149 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3150
0d922e3b 3151 /* brightness: firmware always reacts to them */
e927c08d 3152 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3153 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3154
3155 /* Thinklight: firmware always react to it */
edf0e0e5 3156 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3157
edf0e0e5
HMH		 3158 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3159 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3160
3161 /* Volume: firmware always react to it and reprograms
3162 * the built-in *extra* mixer. Never map it to control
3163 * another mixer by default. */
e927c08d
HMH		 3164 KEY_RESERVED, /* 0x14: VOLUME UP */
3165 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3166 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3167
edf0e0e5 3168 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3169
edf0e0e5
HMH		 3170 /* (assignments unknown, please report if found) */
3171 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3172 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
d1e14dca
HMH		 3173 },
3174
3175 /* Generic keymap for Lenovo ThinkPads */
3176 [TPACPI_KEYMAP_LENOVO_GENERIC] = {
edf0e0e5
HMH		 3177 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3178 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2b754262 3179 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
edf0e0e5 3180 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3181
3182 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3183 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3184 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3185 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3186
de4c8cc7
HMH		 3187 /* These should be enabled --only-- when ACPI video
3188 * is disabled (i.e. in "vendor" mode), and are handled
3189 * in a special way by the init code */
3190 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3191 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3192
edf0e0e5 3193 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3194
edf0e0e5
HMH		 3195 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3196 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3197
3198 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3199 * react to it and reprograms the built-in *extra* mixer.
3200 * Never map it to control another mixer by default.
3201 *
3202 * T60?, T61, R60?, R61: firmware and EC tries to send
3203 * these over the regular keyboard, so these are no-ops,
3204 * but there are still weird bugs re. MUTE, so do not
3205 * change unless you get test reports from all Lenovo
3206 * models. May cause the BIOS to interfere with the
3207 * HDA mixer.
3208 */
e927c08d
HMH		 3209 KEY_RESERVED, /* 0x14: VOLUME UP */
3210 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3211 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3212
edf0e0e5 3213 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3214
33009557
AL		 3215 /* (assignments unknown, please report if found) */
3216 KEY_UNKNOWN, KEY_UNKNOWN,
3217
3218 /*
3219 * The mic mute button only sends 0x1a. It does not
3220 * automatically mute the mic or change the mute light.
3221 */
3222 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */
3223
edf0e0e5 3224 /* (assignments unknown, please report if found) */
33009557 3225 KEY_UNKNOWN,
8b9dd4fa
HG		 3226
3227 /* Extra keys in use since the X240 / T440 / T540 */
4beb81d1 3228 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE,
d1e14dca 3229 },
edf0e0e5
HMH		 3230 };
3231
d1e14dca
HMH		 3232 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
3233 /* Generic maps (fallback) */
3234 {
3235 .vendor = PCI_VENDOR_ID_IBM,
3236 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3237 .quirks = TPACPI_KEYMAP_IBM_GENERIC,
3238 },
3239 {
3240 .vendor = PCI_VENDOR_ID_LENOVO,
3241 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3242 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
3243 },
3244 };
3245
3246#define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
fc6e7568 3247#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
edf0e0e5 3248
6a38abbf 3249 int res, i;
74941a69 3250 int status;
1b6521dc 3251 int hkeyv;
d89a727a
HMH		 3252 bool radiosw_state = false;
3253 bool tabletsw_state = false;
b86c4722 3254
0d922e3b 3255 unsigned long quirks;
d1e14dca 3256 unsigned long keymap_id;
0d922e3b 3257
56e2c200
HMH		 3258 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3259 "initializing hotkey subdriver\n");
fe08bc4b 3260
6a38abbf 3261 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 3262 BUG_ON(tpacpi_inputdev->open != NULL ||
3263 tpacpi_inputdev->close != NULL);
6a38abbf 3264
e0c7dfe7 3265 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 3266 mutex_init(&hotkey_mutex);
5fba344c 3267
01e88f25 3268#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 3269 mutex_init(&hotkey_thread_data_mutex);
3270#endif
3271
56b6aeb0 3272 /* hotkey not supported on 570 */
d8fd94d9 3273 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 3274
56e2c200
HMH		 3275 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3276 "hotkeys are %s\n",
d8fd94d9 3277 str_supported(tp_features.hotkey));
fe08bc4b 3278
9c0a76e1
HMH		 3279 if (!tp_features.hotkey)
3280 return 1;
a0416420 3281
f23a5bcb
BN		 3282 /*
3283 * Check if we have an adaptive keyboard, like on the
3284 * Lenovo Carbon X1 2014 (2nd Gen).
3285 */
3286 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
b790ceeb 3287 if ((hkeyv >> 8) == 2) {
f23a5bcb 3288 tp_features.has_adaptive_kbd = true;
b790ceeb
BN		 3289 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3290 &adaptive_kbd_attr_group);
3291 if (res)
3292 goto err_exit;
3293 }
f23a5bcb
BN		 3294 }
3295
0d922e3b
HMH		 3296 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3297 ARRAY_SIZE(tpacpi_hotkey_qtable));
3298
d64c81c4
HMH		 3299 tpacpi_disable_brightness_delay();
3300
0d922e3b
HMH		 3301 /* MUST have enough space for all attributes to be added to
3302 * hotkey_dev_attributes */
3303 hotkey_dev_attributes = create_attr_set(
3304 ARRAY_SIZE(hotkey_attributes) + 2,
3305 NULL);
9c0a76e1
HMH		 3306 if (!hotkey_dev_attributes)
3307 return -ENOMEM;
3308 res = add_many_to_attr_set(hotkey_dev_attributes,
3309 hotkey_attributes,
3310 ARRAY_SIZE(hotkey_attributes));
3311 if (res)
3312 goto err_exit;
3313
0d922e3b 3314 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
9c0a76e1
HMH		 3315 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3316 for HKEY interface version 0x100 */
3317 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3318 if ((hkeyv >> 8) != 1) {
0978e012
JP		 3319 pr_err("unknown version of the HKEY interface: 0x%x\n",
3320 hkeyv);
3321 pr_err("please report this to %s\n", TPACPI_MAIL);
9c0a76e1
HMH		 3322 } else {
3323 /*
3324 * MHKV 0x100 in A31, R40, R40e,
3325 * T4x, X31, and later
3326 */
56e2c200
HMH		 3327 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3328 "firmware HKEY interface version: 0x%x\n",
3329 hkeyv);
0d922e3b
HMH		 3330
3331 /* Paranoia check AND init hotkey_all_mask */
3332 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3333 "MHKA", "qd")) {
0978e012 3334 pr_err("missing MHKA handler, "
0d922e3b
HMH		 3335 "please report this to %s\n",
3336 TPACPI_MAIL);
3337 /* Fallback: pre-init for FN+F3,F4,F12 */
3338 hotkey_all_mask = 0x080cU;
3339 } else {
3340 tp_features.hotkey_mask = 1;
3341 }
1b6521dc 3342 }
9c0a76e1 3343 }
56b6aeb0 3344
56e2c200
HMH		 3345 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3346 "hotkey masks are %s\n",
9c0a76e1 3347 str_supported(tp_features.hotkey_mask));
fe08bc4b 3348
0d922e3b
HMH		 3349 /* Init hotkey_all_mask if not initialized yet */
3350 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3351 (quirks & TPACPI_HK_Q_INIMASK))
3352 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
9b010de5 3353
0d922e3b 3354 /* Init hotkey_acpi_mask and hotkey_orig_mask */
9c0a76e1 3355 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 3356 /* hotkey_source_mask *must* be zero for
3357 * the first hotkey_mask_get to return hotkey_orig_mask */
9c0a76e1
HMH		 3358 res = hotkey_mask_get();
3359 if (res)
3360 goto err_exit;
3361
0d922e3b
HMH		 3362 hotkey_orig_mask = hotkey_acpi_mask;
3363 } else {
3364 hotkey_orig_mask = hotkey_all_mask;
3365 hotkey_acpi_mask = hotkey_all_mask;
9c0a76e1 3366 }
74941a69 3367
a73f3091
HMH		 3368#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3369 if (dbg_wlswemul) {
3370 tp_features.hotkey_wlsw = 1;
d89a727a 3371 radiosw_state = !!tpacpi_wlsw_emulstate;
0978e012 3372 pr_info("radio switch emulation enabled\n");
a73f3091
HMH		 3373 } else
3374#endif
9c0a76e1
HMH		 3375 /* Not all thinkpads have a hardware radio switch */
3376 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3377 tp_features.hotkey_wlsw = 1;
d89a727a 3378 radiosw_state = !!status;
0978e012 3379 pr_info("radio switch found; radios are %s\n",
9c0a76e1 3380 enabled(status, 0));
3a872080
HMH		 3381 }
3382 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 3383 res = add_to_attr_set(hotkey_dev_attributes,
3384 &dev_attr_hotkey_radio_sw.attr);
74941a69 3385
9c0a76e1
HMH		 3386 /* For X41t, X60t, X61t Tablets... */
3387 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
3388 tp_features.hotkey_tablet = 1;
d89a727a 3389 tabletsw_state = !!(status & TP_HOTKEY_TABLET_MASK);
0978e012 3390 pr_info("possible tablet mode switch found; "
9c0a76e1 3391 "ThinkPad in %s mode\n",
d89a727a 3392 (tabletsw_state) ? "tablet" : "laptop");
9c0a76e1
HMH		 3393 res = add_to_attr_set(hotkey_dev_attributes,
3394 &dev_attr_hotkey_tablet_mode.attr);
3395 }
6c231bd5 3396
9c0a76e1
HMH		 3397 if (!res)
3398 res = register_attr_set_with_sysfs(
3399 hotkey_dev_attributes,
3400 &tpacpi_pdev->dev.kobj);
3401 if (res)
3402 goto err_exit;
6a38abbf 3403
9c0a76e1 3404 /* Set up key map */
9c0a76e1
HMH		 3405 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3406 GFP_KERNEL);
3407 if (!hotkey_keycode_map) {
0978e012 3408 pr_err("failed to allocate memory for key map\n");
9c0a76e1
HMH		 3409 res = -ENOMEM;
3410 goto err_exit;
3411 }
edf0e0e5 3412
d1e14dca
HMH		 3413 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
3414 ARRAY_SIZE(tpacpi_keymap_qtable));
3415 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
3416 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3417 "using keymap number %lu\n", keymap_id);
3418
3419 memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id],
3420 TPACPI_HOTKEY_MAP_SIZE);
edf0e0e5 3421
792979c8 3422 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3423 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3424 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3425 tpacpi_inputdev->keycode = hotkey_keycode_map;
3426 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3427 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3428 input_set_capability(tpacpi_inputdev, EV_KEY,
3429 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3430 } else {
3431 if (i < sizeof(hotkey_reserved_mask)*8)
3432 hotkey_reserved_mask |= 1 << i;
6a38abbf 3433 }
9c0a76e1 3434 }
6a38abbf 3435
9c0a76e1 3436 if (tp_features.hotkey_wlsw) {
792979c8 3437 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3438 input_report_switch(tpacpi_inputdev,
3439 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3440 }
3441 if (tp_features.hotkey_tablet) {
792979c8 3442 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3443 input_report_switch(tpacpi_inputdev,
3444 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3445 }
5c29d58f 3446
9c0a76e1 3447 /* Do not issue duplicate brightness change events to
77775838
HMH		 3448 * userspace. tpacpi_detect_brightness_capabilities() must have
3449 * been called before this point */
ff413195 3450 if (acpi_video_backlight_support()) {
0978e012
JP		 3451 pr_info("This ThinkPad has standard ACPI backlight "
3452 "brightness control, supported by the ACPI "
3453 "video driver\n");
3454 pr_notice("Disabling thinkpad-acpi brightness events "
3455 "by default...\n");
9c0a76e1 3456
de4c8cc7
HMH		 3457 /* Disable brightness up/down on Lenovo thinkpads when
3458 * ACPI is handling them, otherwise it is plain impossible
3459 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3460 hotkey_reserved_mask |=
3461 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3462 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3463 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3464 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3465 }
ff80f137 3466
230d8cf2 3467#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3468 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3469 & ~hotkey_all_mask
3470 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3471
3472 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3473 "hotkey source mask 0x%08x, polling freq %u\n",
3474 hotkey_source_mask, hotkey_poll_freq);
3475#endif
3476
56e2c200
HMH		 3477 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3478 "enabling firmware HKEY event interface...\n");
2586d566 3479 res = hotkey_status_set(true);
9c0a76e1
HMH		 3480 if (res) {
3481 hotkey_exit();
3482 return res;
3483 }
0d922e3b
HMH		 3484 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3485 | hotkey_driver_mask)
3486 & ~hotkey_source_mask);
9c0a76e1
HMH		 3487 if (res < 0 && res != -ENXIO) {
3488 hotkey_exit();
3489 return res;
3490 }
0d922e3b
HMH		 3491 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3492 & ~hotkey_reserved_mask;
3493 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3494 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3495 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3496
9c0a76e1
HMH		 3497 tpacpi_inputdev->open = &hotkey_inputdev_open;
3498 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3499
db25f16d 3500 hotkey_poll_setup_safe(true);
56b6aeb0 3501
9c0a76e1 3502 return 0;
01e88f25 3503
9c0a76e1
HMH		 3504err_exit:
3505 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
b790ceeb
BN		 3506 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3507 &adaptive_kbd_attr_group);
3508
9c0a76e1 3509 hotkey_dev_attributes = NULL;
a0416420 3510
72a979f0 3511 return (res < 0) ? res : 1;
56b6aeb0
HMH		 3512}
3513
3a9d20bd
SS		 3514/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser
3515 * mode, Web conference mode, Function mode and Lay-flat mode.
3516 * We support Home mode and Function mode currently.
3517 *
3518 * Will consider support rest of modes in future.
3519 *
3520 */
b201a47f 3521static const int adaptive_keyboard_modes[] = {
3a9d20bd
SS		 3522 HOME_MODE,
3523/* WEB_BROWSER_MODE = 2,
3524 WEB_CONFERENCE_MODE = 3, */
3525 FUNCTION_MODE
3526};
3527
3528#define DFR_CHANGE_ROW 0x101
3529#define DFR_SHOW_QUICKVIEW_ROW 0x102
3530
3531/* press Fn key a while second, it will switch to Function Mode. Then
3532 * release Fn key, previous mode be restored.
3533 */
3534static bool adaptive_keyboard_mode_is_saved;
3535static int adaptive_keyboard_prev_mode;
3536
f74587fb
BN		 3537static int adaptive_keyboard_get_mode(void)
3538{
3539 int mode = 0;
3540
3541 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) {
3542 pr_err("Cannot read adaptive keyboard mode\n");
3543 return -EIO;
3544 }
3545
3546 return mode;
3547}
3548
3549static int adaptive_keyboard_set_mode(int new_mode)
3550{
3551 if (new_mode < 0 ||
3552 new_mode > LAYFLAT_MODE)
3553 return -EINVAL;
3554
3555 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
3556 pr_err("Cannot set adaptive keyboard mode\n");
3557 return -EIO;
3558 }
3559
3560 return 0;
3561}
3562
3a9d20bd
SS		 3563static int adaptive_keyboard_get_next_mode(int mode)
3564{
3565 size_t i;
3566 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1;
3567
3568 for (i = 0; i <= max_mode; i++) {
3569 if (adaptive_keyboard_modes[i] == mode)
3570 break;
3571 }
3572
3573 if (i >= max_mode)
3574 i = 0;
3575 else
3576 i++;
3577
3578 return adaptive_keyboard_modes[i];
3579}
3580
3581static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
3582{
3583 u32 current_mode = 0;
3584 int new_mode = 0;
3585
3586 switch (scancode) {
3587 case DFR_CHANGE_ROW:
3588 if (adaptive_keyboard_mode_is_saved) {
3589 new_mode = adaptive_keyboard_prev_mode;
3590 adaptive_keyboard_mode_is_saved = false;
3591 } else {
f74587fb
BN		 3592 current_mode = adaptive_keyboard_get_mode();
3593 if (current_mode < 0)
3a9d20bd 3594 return false;
f74587fb
BN		 3595 new_mode = adaptive_keyboard_get_next_mode(
3596 current_mode);
3a9d20bd
SS		 3597 }
3598
f74587fb 3599 if (adaptive_keyboard_set_mode(new_mode) < 0)
3a9d20bd 3600 return false;
3a9d20bd
SS		 3601
3602 return true;
3603
3604 case DFR_SHOW_QUICKVIEW_ROW:
f74587fb
BN		 3605 current_mode = adaptive_keyboard_get_mode();
3606 if (current_mode < 0)
3a9d20bd 3607 return false;
3a9d20bd 3608
f74587fb
BN		 3609 adaptive_keyboard_prev_mode = current_mode;
3610 adaptive_keyboard_mode_is_saved = true;
3611
3612 if (adaptive_keyboard_set_mode (FUNCTION_MODE) < 0)
3613 return false;
3a9d20bd
SS		 3614 return true;
3615
3616 default:
3617 return false;
3618 }
3619}
3620
3827e7a3
HMH		 3621static bool hotkey_notify_hotkey(const u32 hkey,
3622 bool *send_acpi_ev,
3623 bool *ignore_acpi_ev)
3624{
3625 /* 0x1000-0x1FFF: key presses */
3626 unsigned int scancode = hkey & 0xfff;
3627 *send_acpi_ev = true;
3628 *ignore_acpi_ev = false;
3629
34a656d2
HMH		 3630 /* HKEY event 0x1001 is scancode 0x00 */
3631 if (scancode > 0 && scancode <= TPACPI_HOTKEY_MAP_LEN) {
3827e7a3
HMH		 3632 scancode--;
3633 if (!(hotkey_source_mask & (1 << scancode))) {
0d922e3b 3634 tpacpi_input_send_key_masked(scancode);
3827e7a3
HMH		 3635 *send_acpi_ev = false;
3636 } else {
3637 *ignore_acpi_ev = true;
3638 }
3639 return true;
3a9d20bd
SS		 3640 } else {
3641 return adaptive_keyboard_hotkey_notify_hotkey(scancode);
3827e7a3
HMH		 3642 }
3643 return false;
3644}
3645
3646static bool hotkey_notify_wakeup(const u32 hkey,
3647 bool *send_acpi_ev,
3648 bool *ignore_acpi_ev)
3649{
3650 /* 0x2000-0x2FFF: Wakeup reason */
3651 *send_acpi_ev = true;
3652 *ignore_acpi_ev = false;
3653
3654 switch (hkey) {
67bcae6e
HMH		 3655 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3656 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3657 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3658 *ignore_acpi_ev = true;
3659 break;
3660
67bcae6e
HMH		 3661 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3662 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3663 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3664 *ignore_acpi_ev = true;
3665 break;
3666
67bcae6e
HMH		 3667 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3668 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
0978e012 3669 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
106b4e66
HMH		 3670 /* how to auto-heal: */
3671 /* 2313: woke up from S3, go to S4/S5 */
3672 /* 2413: woke up from S4, go to S5 */
3673 break;
3674
3827e7a3
HMH		 3675 default:
3676 return false;
3677 }
3678
3679 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
0978e012 3680 pr_info("woke up due to a hot-unplug request...\n");
3827e7a3
HMH		 3681 hotkey_wakeup_reason_notify_change();
3682 }
3683 return true;
3684}
3685
a50245af
HMH		 3686static bool hotkey_notify_dockevent(const u32 hkey,
3687 bool *send_acpi_ev,
3688 bool *ignore_acpi_ev)
3689{
3690 /* 0x4000-0x4FFF: dock-related events */
3691 *send_acpi_ev = true;
3692 *ignore_acpi_ev = false;
3693
3694 switch (hkey) {
3695 case TP_HKEY_EV_UNDOCK_ACK:
3696 /* ACPI undock operation completed after wakeup */
3697 hotkey_autosleep_ack = 1;
3698 pr_info("undocked\n");
3699 hotkey_wakeup_hotunplug_complete_notify_change();
3700 return true;
3701
3702 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
3703 pr_info("docked into hotplug port replicator\n");
3704 return true;
3705 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
3706 pr_info("undocked from hotplug port replicator\n");
3707 return true;
3708
3709 default:
3710 return false;
3711 }
3712}
3713
3827e7a3
HMH		 3714static bool hotkey_notify_usrevent(const u32 hkey,
3715 bool *send_acpi_ev,
3716 bool *ignore_acpi_ev)
3717{
3718 /* 0x5000-0x5FFF: human interface helpers */
3719 *send_acpi_ev = true;
3720 *ignore_acpi_ev = false;
3721
3722 switch (hkey) {
67bcae6e
HMH		 3723 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
3724 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3827e7a3
HMH		 3725 return true;
3726
67bcae6e
HMH		 3727 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
3728 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3827e7a3
HMH		 3729 tpacpi_input_send_tabletsw();
3730 hotkey_tablet_mode_notify_change();
3731 *send_acpi_ev = false;
3732 return true;
3733
67bcae6e
HMH		 3734 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
3735 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
3736 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
176dd985 3737 /* do not propagate these events */
3827e7a3
HMH		 3738 *ignore_acpi_ev = true;
3739 return true;
3740
3741 default:
3742 return false;
3743 }
3744}
3745
9ebd9e83
HMH		 3746static void thermal_dump_all_sensors(void);
3747
2d43f671 3748static bool hotkey_notify_6xxx(const u32 hkey,
106b4e66
HMH		 3749 bool *send_acpi_ev,
3750 bool *ignore_acpi_ev)
3751{
9ebd9e83
HMH		 3752 bool known = true;
3753
2d43f671 3754 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
106b4e66
HMH		 3755 *send_acpi_ev = true;
3756 *ignore_acpi_ev = false;
3757
3758 switch (hkey) {
9ebd9e83 3759 case TP_HKEY_EV_THM_TABLE_CHANGED:
0978e012 3760 pr_info("EC reports that Thermal Table has changed\n");
9ebd9e83
HMH		 3761 /* recommended action: do nothing, we don't have
3762 * Lenovo ATM information */
3763 return true;
67bcae6e 3764 case TP_HKEY_EV_ALARM_BAT_HOT:
0978e012 3765 pr_crit("THERMAL ALARM: battery is too hot!\n");
106b4e66 3766 /* recommended action: warn user through gui */
9ebd9e83 3767 break;
67bcae6e 3768 case TP_HKEY_EV_ALARM_BAT_XHOT:
0978e012 3769 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
106b4e66 3770 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3771 break;
67bcae6e 3772 case TP_HKEY_EV_ALARM_SENSOR_HOT:
0978e012 3773 pr_crit("THERMAL ALARM: "
106b4e66
HMH		 3774 "a sensor reports something is too hot!\n");
3775 /* recommended action: warn user through gui, that */
3776 /* some internal component is too hot */
9ebd9e83 3777 break;
67bcae6e 3778 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
0978e012
JP		 3779 pr_alert("THERMAL EMERGENCY: "
3780 "a sensor reports something is extremely hot!\n");
106b4e66 3781 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3782 break;
6f62bc3e
RH		 3783 case TP_HKEY_EV_AC_CHANGED:
3784 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
3785 * AC status changed; can be triggered by plugging or
3786 * unplugging AC adapter, docking or undocking. */
3787
3788 /* fallthrough */
2d43f671
HMH		 3789
3790 case TP_HKEY_EV_KEY_NUMLOCK:
3791 case TP_HKEY_EV_KEY_FN:
67ab6248 3792 case TP_HKEY_EV_KEY_FN_ESC:
2d43f671
HMH		 3793 /* key press events, we just ignore them as long as the EC
3794 * is still reporting them in the normal keyboard stream */
3795 *send_acpi_ev = false;
3796 *ignore_acpi_ev = true;
3797 return true;
3798
106b4e66 3799 default:
2d43f671 3800 pr_warn("unknown possible thermal alarm or keyboard event received\n");
9ebd9e83 3801 known = false;
106b4e66 3802 }
9ebd9e83
HMH		 3803
3804 thermal_dump_all_sensors();
3805
3806 return known;
106b4e66
HMH		 3807}
3808
56b6aeb0
HMH		 3809static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3810{
6a38abbf 3811 u32 hkey;
3827e7a3
HMH		 3812 bool send_acpi_ev;
3813 bool ignore_acpi_ev;
3814 bool known_ev;
3eea123d
HMH		 3815
3816 if (event != 0x80) {
0978e012 3817 pr_err("unknown HKEY notification event %d\n", event);
3eea123d 3818 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 3819 acpi_bus_generate_netlink_event(
3820 ibm->acpi->device->pnp.device_class,
e0b36fc5 3821 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3822 event, 0);
3eea123d
HMH		 3823 return;
3824 }
3825
3826 while (1) {
3827 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
0978e012 3828 pr_err("failed to retrieve HKEY event\n");
3eea123d
HMH		 3829 return;
3830 }
3831
3832 if (hkey == 0) {
3833 /* queue empty */
3834 return;
3835 }
3836
3827e7a3
HMH		 3837 send_acpi_ev = true;
3838 ignore_acpi_ev = false;
56b6aeb0 3839
ff80f137
HMH		 3840 switch (hkey >> 12) {
3841 case 1:
3842 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 3843 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3844 &ignore_acpi_ev);
ff80f137 3845 break;
a713b4d7 3846 case 2:
3827e7a3
HMH		 3847 /* 0x2000-0x2FFF: Wakeup reason */
3848 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3849 &ignore_acpi_ev);
a713b4d7
HMH		 3850 break;
3851 case 3:
3827e7a3 3852 /* 0x3000-0x3FFF: bay-related wakeups */
bf8b29c8
HMH		 3853 switch (hkey) {
3854 case TP_HKEY_EV_BAYEJ_ACK:
a713b4d7 3855 hotkey_autosleep_ack = 1;
0978e012 3856 pr_info("bay ejected\n");
50ebec09 3857 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3858 known_ev = true;
bf8b29c8
HMH		 3859 break;
3860 case TP_HKEY_EV_OPTDRV_EJ:
3861 /* FIXME: kick libata if SATA link offline */
3862 known_ev = true;
3863 break;
3864 default:
3827e7a3 3865 known_ev = false;
a713b4d7
HMH		 3866 }
3867 break;
3868 case 4:
a50245af
HMH		 3869 /* 0x4000-0x4FFF: dock-related events */
3870 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev,
3871 &ignore_acpi_ev);
a713b4d7 3872 break;
ff80f137 3873 case 5:
d1edb2b5 3874 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 3875 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3876 &ignore_acpi_ev);
ff80f137 3877 break;
106b4e66 3878 case 6:
2d43f671
HMH		 3879 /* 0x6000-0x6FFF: thermal alarms/notices and
3880 * keyboard events */
3881 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev,
106b4e66
HMH		 3882 &ignore_acpi_ev);
3883 break;
ff80f137
HMH		 3884 case 7:
3885 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 3886 if (tp_features.hotkey_wlsw &&
3887 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 3888 tpacpi_send_radiosw_update();
3b64b51d 3889 send_acpi_ev = 0;
3827e7a3 3890 known_ev = true;
6a38abbf 3891 break;
6a38abbf 3892 }
ff80f137
HMH		 3893 /* fallthrough to default */
3894 default:
3827e7a3 3895 known_ev = false;
3b64b51d 3896 }
3827e7a3 3897 if (!known_ev) {
0978e012
JP		 3898 pr_notice("unhandled HKEY event 0x%04x\n", hkey);
3899 pr_notice("please report the conditions when this "
3900 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 3901 }
ff80f137 3902
3eea123d 3903 /* netlink events */
3e5ce914 3904 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 3905 acpi_bus_generate_netlink_event(
3906 ibm->acpi->device->pnp.device_class,
e0b36fc5 3907 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3908 event, hkey);
3eea123d 3909 }
56b6aeb0
HMH		 3910 }
3911}
3912
fd3c3a42 3913static void hotkey_suspend(void)
a713b4d7
HMH		 3914{
3915 /* Do these on suspend, we get the events on early resume! */
3916 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3917 hotkey_autosleep_ack = 0;
330947b8
SS		 3918
3919 /* save previous mode of adaptive keyboard of X1 Carbon */
f23a5bcb
BN		 3920 if (tp_features.has_adaptive_kbd) {
3921 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode,
3922 "GTRW", "dd", 0)) {
3923 pr_err("Cannot read adaptive keyboard mode.\n");
330947b8
SS		 3924 }
3925 }
a713b4d7
HMH		 3926}
3927
5c29d58f
HMH		 3928static void hotkey_resume(void)
3929{
d64c81c4
HMH		 3930 tpacpi_disable_brightness_delay();
3931
0d922e3b
HMH		 3932 if (hotkey_status_set(true) < 0 ||
3933 hotkey_mask_set(hotkey_acpi_mask) < 0)
0978e012 3934 pr_err("error while attempting to reset the event "
0d922e3b
HMH		 3935 "firmware interface\n");
3936
733e27c1 3937 tpacpi_send_radiosw_update();
6c231bd5 3938 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 3939 hotkey_wakeup_reason_notify_change();
3940 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 3941 hotkey_poll_setup_safe(false);
330947b8
SS		 3942
3943 /* restore previous mode of adapive keyboard of X1 Carbon */
f23a5bcb
BN		 3944 if (tp_features.has_adaptive_kbd) {
3945 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd",
3946 adaptive_keyboard_prev_mode)) {
3947 pr_err("Cannot set adaptive keyboard mode.\n");
330947b8
SS		 3948 }
3949 }
5c29d58f
HMH		 3950}
3951
a0416420 3952/* procfs -------------------------------------------------------------- */
887965e6 3953static int hotkey_read(struct seq_file *m)
1da177e4 3954{
ae92bd17 3955 int res, status;
1da177e4 3956
d8fd94d9 3957 if (!tp_features.hotkey) {
887965e6
AD		 3958 seq_printf(m, "status:\t\tnot supported\n");
3959 return 0;
78f81cc4
BD		 3960 }
3961
7646ea88 3962 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3963 return -ERESTARTSYS;
b2c985e7
HMH		 3964 res = hotkey_status_get(&status);
3965 if (!res)
3966 res = hotkey_mask_get();
40ca9fdf 3967 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 3968 if (res)
3969 return res;
1da177e4 3970
887965e6 3971 seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
0d922e3b 3972 if (hotkey_all_mask) {
887965e6
AD		 3973 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
3974 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
1da177e4 3975 } else {
887965e6
AD		 3976 seq_printf(m, "mask:\t\tnot supported\n");
3977 seq_printf(m, "commands:\tenable, disable, reset\n");
1da177e4
LT		 3978 }
3979
887965e6 3980 return 0;
1da177e4
LT		 3981}
3982
406e988b 3983static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 3984{
3985 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b 3986 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
0978e012
JP		 3987 pr_fmt("hotkey enable/disable functionality has been "
3988 "removed from the driver. "
3989 "Hotkeys are always enabled.\n")))
3990 pr_err("Please remove the hotkey=enable module "
3991 "parameter, it is deprecated. "
3992 "Hotkeys are always enabled.\n");
2586d566
HMH		 3993}
3994
78f81cc4 3995static int hotkey_write(char *buf)
1da177e4 3996{
2586d566 3997 int res;
ae92bd17 3998 u32 mask;
1da177e4 3999 char *cmd;
1da177e4 4000
d8fd94d9 4001 if (!tp_features.hotkey)
1da177e4
LT		 4002 return -ENODEV;
4003
7646ea88 4004 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 4005 return -ERESTARTSYS;
40ca9fdf 4006
0d922e3b 4007 mask = hotkey_user_mask;
78f81cc4 4008
40ca9fdf 4009 res = 0;
1da177e4
LT		 4010 while ((cmd = next_cmd(&buf))) {
4011 if (strlencmp(cmd, "enable") == 0) {
406e988b 4012 hotkey_enabledisable_warn(1);
1da177e4 4013 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 4014 hotkey_enabledisable_warn(0);
2586d566 4015 res = -EPERM;
1da177e4 4016 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 4017 mask = (hotkey_all_mask | hotkey_source_mask)
4018 & ~hotkey_reserved_mask;
1da177e4
LT		 4019 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
4020 /* mask set */
4021 } else if (sscanf(cmd, "%x", &mask) == 1) {
4022 /* mask set */
40ca9fdf
HMH		 4023 } else {
4024 res = -EINVAL;
4025 goto errexit;
4026 }
1da177e4 4027 }
56e2c200 4028
0d922e3b 4029 if (!res) {
56e2c200
HMH		 4030 tpacpi_disclose_usertask("procfs hotkey",
4031 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 4032 res = hotkey_user_mask_set(mask);
4033 }
1da177e4 4034
40ca9fdf
HMH		 4035errexit:
4036 mutex_unlock(&hotkey_mutex);
4037 return res;
78f81cc4 4038}
1da177e4 4039
1ba90e3a 4040static const struct acpi_device_id ibm_htk_device_ids[] = {
9fbdaeb4
MI		 4041 {TPACPI_ACPI_IBM_HKEY_HID, 0},
4042 {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
1ba90e3a
TR		 4043 {"", 0},
4044};
4045
8d376cd6 4046static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 4047 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 4048 .notify = hotkey_notify,
4049 .handle = &hkey_handle,
4050 .type = ACPI_DEVICE_NOTIFY,
4051};
4052
a5763f22
HMH		 4053static struct ibm_struct hotkey_driver_data = {
4054 .name = "hotkey",
a5763f22
HMH		 4055 .read = hotkey_read,
4056 .write = hotkey_write,
4057 .exit = hotkey_exit,
5c29d58f 4058 .resume = hotkey_resume,
a713b4d7 4059 .suspend = hotkey_suspend,
8d376cd6 4060 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 4061};
4062
56b6aeb0
HMH		 4063/*************************************************************************
4064 * Bluetooth subdriver
4065 */
1da177e4 4066
f74a27d4
HMH		 4067enum {
4068 /* ACPI GBDC/SBDC bits */
4069 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
4070 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220 4071 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
08fedfc9 4072 0 = disable, 1 = enable */
153f8220
HMH		 4073};
4074
4075enum {
4076 /* ACPI \BLTH commands */
4077 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
4078 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
4079 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
4080 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
4081 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 4082};
4083
bee4cd9b
HMH		 4084#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
4085
19d337df 4086static int bluetooth_get_status(void)
07431ec8
HMH		 4087{
4088 int status;
4089
a73f3091
HMH		 4090#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4091 if (dbg_bluetoothemul)
4092 return (tpacpi_bluetooth_emulstate) ?
19d337df 4093 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4094#endif
4095
07431ec8
HMH		 4096 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
4097 return -EIO;
4098
0e74dc26 4099 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 4100 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 4101}
4102
19d337df 4103static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 4104{
4105 int status;
4106
bee4cd9b 4107 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4108 "will attempt to %s bluetooth\n",
4109 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4110
a73f3091
HMH		 4111#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4112 if (dbg_bluetoothemul) {
19d337df 4113 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4114 return 0;
4115 }
4116#endif
4117
19d337df 4118 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4119 status = TP_ACPI_BLUETOOTH_RADIOSSW
4120 | TP_ACPI_BLUETOOTH_RESUMECTRL;
4121 else
4122 status = 0;
19d337df 4123
07431ec8
HMH		 4124 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
4125 return -EIO;
4126
4127 return 0;
4128}
f74a27d4 4129
d3a6ade4
HMH		 4130/* sysfs bluetooth enable ---------------------------------------------- */
4131static ssize_t bluetooth_enable_show(struct device *dev,
4132 struct device_attribute *attr,
4133 char *buf)
4134{
19d337df
JB		 4135 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
4136 attr, buf);
d3a6ade4
HMH		 4137}
4138
4139static ssize_t bluetooth_enable_store(struct device *dev,
4140 struct device_attribute *attr,
4141 const char *buf, size_t count)
4142{
19d337df
JB		 4143 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
4144 attr, buf, count);
d3a6ade4
HMH		 4145}
4146
4147static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 4148 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 4149 bluetooth_enable_show, bluetooth_enable_store);
4150
4151/* --------------------------------------------------------------------- */
4152
4153static struct attribute *bluetooth_attributes[] = {
4154 &dev_attr_bluetooth_enable.attr,
4155 NULL
4156};
4157
4158static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 4159 .attrs = bluetooth_attributes,
4160};
4161
19d337df
JB		 4162static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
4163 .get_status = bluetooth_get_status,
4164 .set_status = bluetooth_set_status,
4165};
0e74dc26 4166
90d9d3c7
HMH		 4167static void bluetooth_shutdown(void)
4168{
4169 /* Order firmware to save current state to NVRAM */
4170 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
4171 TP_ACPI_BLTH_SAVE_STATE))
0978e012 4172 pr_notice("failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 4173 else
4174 vdbg_printk(TPACPI_DBG_RFKILL,
1f01358c 4175 "bluetooth state saved to NVRAM\n");
90d9d3c7
HMH		 4176}
4177
07431ec8
HMH		 4178static void bluetooth_exit(void)
4179{
4180 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4181 &bluetooth_attr_group);
19d337df
JB		 4182
4183 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
4184
4185 bluetooth_shutdown();
07431ec8
HMH		 4186}
4187
a5763f22 4188static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 4189{
d3a6ade4 4190 int res;
d6fdd1e9
HMH		 4191 int status = 0;
4192
bee4cd9b
HMH		 4193 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4194 "initializing bluetooth subdriver\n");
fe08bc4b 4195
e0c7dfe7 4196 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4197
78f81cc4
BD		 4198 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4199 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 4200 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 4201 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4202
bee4cd9b
HMH		 4203 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4204 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4205 str_supported(tp_features.bluetooth),
4206 status);
4207
a73f3091
HMH		 4208#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4209 if (dbg_bluetoothemul) {
4210 tp_features.bluetooth = 1;
0978e012 4211 pr_info("bluetooth switch emulation enabled\n");
a73f3091
HMH		 4212 } else
4213#endif
3a872080
HMH		 4214 if (tp_features.bluetooth &&
4215 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4216 /* no bluetooth hardware present in system */
4217 tp_features.bluetooth = 0;
bee4cd9b 4218 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4219 "bluetooth hardware not installed\n");
4220 }
4221
0e74dc26
HMH		 4222 if (!tp_features.bluetooth)
4223 return 1;
4224
0e74dc26 4225 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4226 &bluetooth_tprfk_ops,
0e74dc26 4227 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4228 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 4229 true);
4230 if (res)
4231 return res;
4232
4233 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4234 &bluetooth_attr_group);
0e74dc26 4235 if (res) {
19d337df 4236 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 4237 return res;
d6fdd1e9 4238 }
fe08bc4b 4239
0e74dc26 4240 return 0;
1da177e4
LT		 4241}
4242
d3a6ade4 4243/* procfs -------------------------------------------------------------- */
887965e6 4244static int bluetooth_read(struct seq_file *m)
1da177e4 4245{
887965e6 4246 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
1da177e4
LT		 4247}
4248
78f81cc4 4249static int bluetooth_write(char *buf)
1da177e4 4250{
19d337df 4251 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4252}
4253
a5763f22
HMH		 4254static struct ibm_struct bluetooth_driver_data = {
4255 .name = "bluetooth",
4256 .read = bluetooth_read,
4257 .write = bluetooth_write,
d3a6ade4 4258 .exit = bluetooth_exit,
90d9d3c7 4259 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4260};
4261
56b6aeb0
HMH		 4262/*************************************************************************
4263 * Wan subdriver
4264 */
4265
f74a27d4
HMH		 4266enum {
4267 /* ACPI GWAN/SWAN bits */
4268 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4269 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220 4270 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
08fedfc9 4271 0 = disable, 1 = enable */
f74a27d4
HMH		 4272};
4273
bee4cd9b
HMH		 4274#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4275
19d337df 4276static int wan_get_status(void)
07431ec8
HMH		 4277{
4278 int status;
4279
a73f3091
HMH		 4280#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4281 if (dbg_wwanemul)
4282 return (tpacpi_wwan_emulstate) ?
19d337df 4283 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4284#endif
4285
07431ec8
HMH		 4286 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4287 return -EIO;
4288
0e74dc26 4289 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4290 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4291}
4292
19d337df 4293static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4294{
4295 int status;
4296
bee4cd9b 4297 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4298 "will attempt to %s wwan\n",
4299 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4300
a73f3091
HMH		 4301#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4302 if (dbg_wwanemul) {
19d337df 4303 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4304 return 0;
4305 }
4306#endif
4307
19d337df 4308 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4309 status = TP_ACPI_WANCARD_RADIOSSW
4310 | TP_ACPI_WANCARD_RESUMECTRL;
4311 else
4312 status = 0;
19d337df 4313
07431ec8
HMH		 4314 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4315 return -EIO;
4316
4317 return 0;
4318}
f74a27d4 4319
d3a6ade4
HMH		 4320/* sysfs wan enable ---------------------------------------------------- */
4321static ssize_t wan_enable_show(struct device *dev,
4322 struct device_attribute *attr,
4323 char *buf)
4324{
19d337df
JB		 4325 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4326 attr, buf);
d3a6ade4
HMH		 4327}
4328
4329static ssize_t wan_enable_store(struct device *dev,
4330 struct device_attribute *attr,
4331 const char *buf, size_t count)
4332{
19d337df
JB		 4333 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4334 attr, buf, count);
d3a6ade4
HMH		 4335}
4336
4337static struct device_attribute dev_attr_wan_enable =
cc4c24e1 4338 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 4339 wan_enable_show, wan_enable_store);
4340
4341/* --------------------------------------------------------------------- */
4342
4343static struct attribute *wan_attributes[] = {
4344 &dev_attr_wan_enable.attr,
4345 NULL
4346};
4347
4348static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 4349 .attrs = wan_attributes,
4350};
4351
19d337df
JB		 4352static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4353 .get_status = wan_get_status,
4354 .set_status = wan_set_status,
4355};
0e74dc26 4356
90d9d3c7
HMH		 4357static void wan_shutdown(void)
4358{
4359 /* Order firmware to save current state to NVRAM */
4360 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4361 TP_ACPI_WGSV_SAVE_STATE))
0978e012 4362 pr_notice("failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4363 else
4364 vdbg_printk(TPACPI_DBG_RFKILL,
4365 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4366}
4367
07431ec8
HMH		 4368static void wan_exit(void)
4369{
4370 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4371 &wan_attr_group);
19d337df
JB		 4372
4373 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4374
4375 wan_shutdown();
07431ec8
HMH		 4376}
4377
a5763f22 4378static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4379{
d3a6ade4 4380 int res;
d6fdd1e9
HMH		 4381 int status = 0;
4382
bee4cd9b
HMH		 4383 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4384 "initializing wan subdriver\n");
fe08bc4b 4385
e0c7dfe7 4386 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4387
d8fd94d9 4388 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4389 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4390
bee4cd9b
HMH		 4391 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4392 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4393 str_supported(tp_features.wan),
4394 status);
4395
a73f3091
HMH		 4396#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4397 if (dbg_wwanemul) {
4398 tp_features.wan = 1;
0978e012 4399 pr_info("wwan switch emulation enabled\n");
a73f3091
HMH		 4400 } else
4401#endif
3a872080
HMH		 4402 if (tp_features.wan &&
4403 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4404 /* no wan hardware present in system */
4405 tp_features.wan = 0;
bee4cd9b 4406 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4407 "wan hardware not installed\n");
4408 }
4409
0e74dc26
HMH		 4410 if (!tp_features.wan)
4411 return 1;
4412
0e74dc26 4413 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4414 &wan_tprfk_ops,
0e74dc26 4415 RFKILL_TYPE_WWAN,
bee4cd9b 4416 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 4417 true);
4418 if (res)
4419 return res;
4420
4421 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4422 &wan_attr_group);
4423
0e74dc26 4424 if (res) {
19d337df 4425 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4426 return res;
d6fdd1e9 4427 }
fe08bc4b 4428
0e74dc26 4429 return 0;
42adb53c
JF		 4430}
4431
d3a6ade4 4432/* procfs -------------------------------------------------------------- */
887965e6 4433static int wan_read(struct seq_file *m)
42adb53c 4434{
887965e6 4435 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
42adb53c
JF		 4436}
4437
4438static int wan_write(char *buf)
4439{
19d337df 4440 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4441}
4442
a5763f22
HMH		 4443static struct ibm_struct wan_driver_data = {
4444 .name = "wan",
4445 .read = wan_read,
4446 .write = wan_write,
d3a6ade4 4447 .exit = wan_exit,
90d9d3c7 4448 .shutdown = wan_shutdown,
a5763f22
HMH		 4449};
4450
0045c0aa
HMH		 4451/*************************************************************************
4452 * UWB subdriver
4453 */
4454
4455enum {
4456 /* ACPI GUWB/SUWB bits */
4457 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4458 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4459};
4460
bee4cd9b
HMH		 4461#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4462
19d337df 4463static int uwb_get_status(void)
0045c0aa
HMH		 4464{
4465 int status;
4466
0045c0aa
HMH		 4467#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4468 if (dbg_uwbemul)
4469 return (tpacpi_uwb_emulstate) ?
19d337df 4470 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4471#endif
4472
4473 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4474 return -EIO;
4475
4476 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4477 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4478}
4479
19d337df 4480static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4481{
4482 int status;
4483
bee4cd9b 4484 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4485 "will attempt to %s UWB\n",
4486 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4487
0045c0aa
HMH		 4488#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4489 if (dbg_uwbemul) {
19d337df 4490 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4491 return 0;
4492 }
4493#endif
4494
19d337df
JB		 4495 if (state == TPACPI_RFK_RADIO_ON)
4496 status = TP_ACPI_UWB_RADIOSSW;
4497 else
4498 status = 0;
4499
0045c0aa
HMH		 4500 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4501 return -EIO;
4502
0045c0aa
HMH		 4503 return 0;
4504}
4505
4506/* --------------------------------------------------------------------- */
4507
19d337df
JB		 4508static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4509 .get_status = uwb_get_status,
4510 .set_status = uwb_set_status,
4511};
0045c0aa
HMH		 4512
4513static void uwb_exit(void)
4514{
19d337df 4515 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4516}
4517
4518static int __init uwb_init(struct ibm_init_struct *iibm)
4519{
4520 int res;
4521 int status = 0;
4522
bee4cd9b
HMH		 4523 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4524 "initializing uwb subdriver\n");
0045c0aa
HMH		 4525
4526 TPACPI_ACPIHANDLE_INIT(hkey);
4527
4528 tp_features.uwb = hkey_handle &&
4529 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4530
bee4cd9b
HMH		 4531 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4532 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4533 str_supported(tp_features.uwb),
4534 status);
4535
4536#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4537 if (dbg_uwbemul) {
4538 tp_features.uwb = 1;
0978e012 4539 pr_info("uwb switch emulation enabled\n");
0045c0aa
HMH		 4540 } else
4541#endif
4542 if (tp_features.uwb &&
4543 !(status & TP_ACPI_UWB_HWPRESENT)) {
4544 /* no uwb hardware present in system */
4545 tp_features.uwb = 0;
4546 dbg_printk(TPACPI_DBG_INIT,
4547 "uwb hardware not installed\n");
4548 }
4549
4550 if (!tp_features.uwb)
4551 return 1;
4552
4553 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4554 &uwb_tprfk_ops,
0045c0aa 4555 RFKILL_TYPE_UWB,
bee4cd9b 4556 TPACPI_RFK_UWB_SW_NAME,
19d337df 4557 false);
0045c0aa
HMH		 4558 return res;
4559}
4560
4561static struct ibm_struct uwb_driver_data = {
4562 .name = "uwb",
4563 .exit = uwb_exit,
4564 .flags.experimental = 1,
4565};
4566
56b6aeb0
HMH		 4567/*************************************************************************
4568 * Video subdriver
4569 */
4570
d7c1d17d
HMH		 4571#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4572
f74a27d4
HMH		 4573enum video_access_mode {
4574 TPACPI_VIDEO_NONE = 0,
4575 TPACPI_VIDEO_570, /* 570 */
4576 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4577 TPACPI_VIDEO_NEW, /* all others */
4578};
4579
4580enum { /* video status flags, based on VIDEO_570 */
4581 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4582 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4583 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4584};
4585
4586enum { /* TPACPI_VIDEO_570 constants */
4587 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4588 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4589 * video_status_flags */
4590 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4591 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4592};
4593
9a8e1738
HMH		 4594static enum video_access_mode video_supported;
4595static int video_orig_autosw;
78f81cc4 4596
f74a27d4
HMH		 4597static int video_autosw_get(void);
4598static int video_autosw_set(int enable);
4599
112a6ee0
JP		 4600TPACPI_HANDLE(vid, root,
4601 "\\_SB.PCI.AGP.VGA", /* 570 */
4602 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4603 "\\_SB.PCI0.VID0", /* 770e */
4604 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4605 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4606 "\\_SB.PCI0.AGP.VID", /* all others */
4607 ); /* R30, R31 */
4608
e0c7dfe7 4609TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4610
a5763f22 4611static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4612{
78f81cc4
BD		 4613 int ivga;
4614
fe08bc4b
HMH		 4615 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4616
e0c7dfe7 4617 TPACPI_ACPIHANDLE_INIT(vid);
e28393c0
HMH		 4618 if (tpacpi_is_ibm())
4619 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4620
78f81cc4
BD		 4621 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4622 /* G41, assume IVGA doesn't change */
4623 vid_handle = vid2_handle;
4624
4625 if (!vid_handle)
4626 /* video switching not supported on R30, R31 */
efa27145 4627 video_supported = TPACPI_VIDEO_NONE;
e28393c0
HMH		 4628 else if (tpacpi_is_ibm() &&
4629 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
78f81cc4 4630 /* 570 */
efa27145 4631 video_supported = TPACPI_VIDEO_570;
e28393c0
HMH		 4632 else if (tpacpi_is_ibm() &&
4633 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
78f81cc4 4634 /* 600e/x, 770e, 770x */
efa27145 4635 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4636 else
4637 /* all others */
efa27145 4638 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4639
fe08bc4b
HMH		 4640 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4641 str_supported(video_supported != TPACPI_VIDEO_NONE),
4642 video_supported);
4643
72a979f0 4644 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1;
1da177e4
LT		 4645}
4646
56b6aeb0
HMH		 4647static void video_exit(void)
4648{
83f34724
HMH		 4649 dbg_printk(TPACPI_DBG_EXIT,
4650 "restoring original video autoswitch mode\n");
4651 if (video_autosw_set(video_orig_autosw))
0978e012 4652 pr_err("error while trying to restore original "
83f34724 4653 "video autoswitch mode\n");
56b6aeb0
HMH		 4654}
4655
83f34724 4656static int video_outputsw_get(void)
1da177e4
LT		 4657{
4658 int status = 0;
4659 int i;
4660
83f34724
HMH		 4661 switch (video_supported) {
4662 case TPACPI_VIDEO_570:
4663 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4664 TP_ACPI_VIDEO_570_PHSCMD))
4665 return -EIO;
4666 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4667 break;
4668 case TPACPI_VIDEO_770:
4669 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4670 return -EIO;
4671 if (i)
4672 status |= TP_ACPI_VIDEO_S_LCD;
4673 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4674 return -EIO;
4675 if (i)
4676 status |= TP_ACPI_VIDEO_S_CRT;
4677 break;
4678 case TPACPI_VIDEO_NEW:
4679 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4680 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4681 return -EIO;
4682 if (i)
4683 status |= TP_ACPI_VIDEO_S_CRT;
4684
4685 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4686 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4687 return -EIO;
4688 if (i)
4689 status |= TP_ACPI_VIDEO_S_LCD;
4690 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4691 return -EIO;
4692 if (i)
4693 status |= TP_ACPI_VIDEO_S_DVI;
4694 break;
4695 default:
4696 return -ENOSYS;
78f81cc4
BD		 4697 }
4698
4699 return status;
4700}
1da177e4 4701
83f34724 4702static int video_outputsw_set(int status)
78f81cc4 4703{
83f34724
HMH		 4704 int autosw;
4705 int res = 0;
4706
4707 switch (video_supported) {
4708 case TPACPI_VIDEO_570:
4709 res = acpi_evalf(NULL, NULL,
4710 "\\_SB.PHS2", "vdd",
4711 TP_ACPI_VIDEO_570_PHS2CMD,
4712 status | TP_ACPI_VIDEO_570_PHS2SET);
4713 break;
4714 case TPACPI_VIDEO_770:
4715 autosw = video_autosw_get();
4716 if (autosw < 0)
4717 return autosw;
1da177e4 4718
83f34724
HMH		 4719 res = video_autosw_set(1);
4720 if (res)
4721 return res;
4722 res = acpi_evalf(vid_handle, NULL,
4723 "ASWT", "vdd", status * 0x100, 0);
4724 if (!autosw && video_autosw_set(autosw)) {
0978e012 4725 pr_err("video auto-switch left enabled due to error\n");
83f34724
HMH		 4726 return -EIO;
4727 }
4728 break;
4729 case TPACPI_VIDEO_NEW:
4730 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 4731 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 4732 break;
4733 default:
4734 return -ENOSYS;
4735 }
1da177e4 4736
72a979f0 4737 return (res) ? 0 : -EIO;
1da177e4
LT		 4738}
4739
83f34724 4740static int video_autosw_get(void)
78f81cc4 4741{
83f34724 4742 int autosw = 0;
78f81cc4 4743
83f34724
HMH		 4744 switch (video_supported) {
4745 case TPACPI_VIDEO_570:
4746 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4747 return -EIO;
4748 break;
4749 case TPACPI_VIDEO_770:
4750 case TPACPI_VIDEO_NEW:
4751 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4752 return -EIO;
4753 break;
4754 default:
4755 return -ENOSYS;
4756 }
78f81cc4 4757
83f34724 4758 return autosw & 1;
78f81cc4
BD		 4759}
4760
83f34724 4761static int video_autosw_set(int enable)
78f81cc4 4762{
72a979f0 4763 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0))
83f34724
HMH		 4764 return -EIO;
4765 return 0;
78f81cc4
BD		 4766}
4767
83f34724 4768static int video_outputsw_cycle(void)
78f81cc4 4769{
83f34724
HMH		 4770 int autosw = video_autosw_get();
4771 int res;
78f81cc4 4772
83f34724
HMH		 4773 if (autosw < 0)
4774 return autosw;
78f81cc4 4775
83f34724
HMH		 4776 switch (video_supported) {
4777 case TPACPI_VIDEO_570:
4778 res = video_autosw_set(1);
4779 if (res)
4780 return res;
4781 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4782 break;
4783 case TPACPI_VIDEO_770:
4784 case TPACPI_VIDEO_NEW:
4785 res = video_autosw_set(1);
4786 if (res)
4787 return res;
4788 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4789 break;
4790 default:
4791 return -ENOSYS;
4792 }
4793 if (!autosw && video_autosw_set(autosw)) {
0978e012 4794 pr_err("video auto-switch left enabled due to error\n");
83f34724 4795 return -EIO;
78f81cc4
BD		 4796 }
4797
72a979f0 4798 return (res) ? 0 : -EIO;
83f34724
HMH		 4799}
4800
4801static int video_expand_toggle(void)
4802{
4803 switch (video_supported) {
4804 case TPACPI_VIDEO_570:
72a979f0 4805 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ?
83f34724
HMH		 4806 0 : -EIO;
4807 case TPACPI_VIDEO_770:
72a979f0 4808 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ?
83f34724
HMH		 4809 0 : -EIO;
4810 case TPACPI_VIDEO_NEW:
72a979f0 4811 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ?
83f34724
HMH		 4812 0 : -EIO;
4813 default:
4814 return -ENOSYS;
4815 }
4816 /* not reached */
78f81cc4
BD		 4817}
4818
887965e6 4819static int video_read(struct seq_file *m)
56b6aeb0 4820{
83f34724 4821 int status, autosw;
56b6aeb0 4822
83f34724 4823 if (video_supported == TPACPI_VIDEO_NONE) {
887965e6
AD		 4824 seq_printf(m, "status:\t\tnot supported\n");
4825 return 0;
56b6aeb0
HMH		 4826 }
4827
b525c06c
HMH		 4828 /* Even reads can crash X.org, so... */
4829 if (!capable(CAP_SYS_ADMIN))
4830 return -EPERM;
4831
83f34724
HMH		 4832 status = video_outputsw_get();
4833 if (status < 0)
4834 return status;
4835
4836 autosw = video_autosw_get();
4837 if (autosw < 0)
4838 return autosw;
4839
887965e6
AD		 4840 seq_printf(m, "status:\t\tsupported\n");
4841 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
4842 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4843 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4844 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
4845 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
4846 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
4847 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
efa27145 4848 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4849 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
4850 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
4851 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
56b6aeb0 4852
887965e6 4853 return 0;
56b6aeb0
HMH		 4854}
4855
78f81cc4 4856static int video_write(char *buf)
1da177e4
LT		 4857{
4858 char *cmd;
4859 int enable, disable, status;
83f34724 4860 int res;
1da177e4 4861
83f34724 4862 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4863 return -ENODEV;
4864
b525c06c
HMH		 4865 /* Even reads can crash X.org, let alone writes... */
4866 if (!capable(CAP_SYS_ADMIN))
4867 return -EPERM;
4868
83f34724
HMH		 4869 enable = 0;
4870 disable = 0;
1da177e4
LT		 4871
4872 while ((cmd = next_cmd(&buf))) {
4873 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4874 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4875 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4876 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4877 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4878 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4879 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4880 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4881 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4882 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4883 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4884 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4885 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4886 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4887 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4888 res = video_autosw_set(1);
4889 if (res)
4890 return res;
1da177e4 4891 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4892 res = video_autosw_set(0);
4893 if (res)
4894 return res;
1da177e4 4895 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4896 res = video_outputsw_cycle();
4897 if (res)
4898 return res;
1da177e4 4899 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4900 res = video_expand_toggle();
4901 if (res)
4902 return res;
1da177e4
LT		 4903 } else
4904 return -EINVAL;
4905 }
4906
4907 if (enable || disable) {
83f34724
HMH		 4908 status = video_outputsw_get();
4909 if (status < 0)
4910 return status;
4911 res = video_outputsw_set((status & ~disable) | enable);
4912 if (res)
4913 return res;
1da177e4
LT		 4914 }
4915
4916 return 0;
4917}
4918
a5763f22
HMH		 4919static struct ibm_struct video_driver_data = {
4920 .name = "video",
4921 .read = video_read,
4922 .write = video_write,
4923 .exit = video_exit,
4924};
4925
d7c1d17d
HMH		 4926#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4927
56b6aeb0
HMH		 4928/*************************************************************************
4929 * Light (thinklight) subdriver
4930 */
1da177e4 4931
e0c7dfe7
HMH		 4932TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4933TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4934
4fa6811b
HMH		 4935static int light_get_status(void)
4936{
4937 int status = 0;
4938
4939 if (tp_features.light_status) {
4940 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4941 return -EIO;
4942 return (!!status);
4943 }
4944
4945 return -ENXIO;
4946}
4947
4948static int light_set_status(int status)
4949{
4950 int rc;
4951
4952 if (tp_features.light) {
4953 if (cmos_handle) {
4954 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
72a979f0 4955 (status) ?
4fa6811b
HMH		 4956 TP_CMOS_THINKLIGHT_ON :
4957 TP_CMOS_THINKLIGHT_OFF);
4958 } else {
4959 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
72a979f0 4960 (status) ? 1 : 0);
4fa6811b 4961 }
72a979f0 4962 return (rc) ? 0 : -EIO;
4fa6811b
HMH		 4963 }
4964
4965 return -ENXIO;
4966}
4967
e306501d
HMH		 4968static void light_set_status_worker(struct work_struct *work)
4969{
4970 struct tpacpi_led_classdev *data =
4971 container_of(work, struct tpacpi_led_classdev, work);
4972
4973 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 4974 light_set_status((data->new_state != TPACPI_LED_OFF));
e306501d
HMH		 4975}
4976
4977static void light_sysfs_set(struct led_classdev *led_cdev,
4978 enum led_brightness brightness)
4979{
4980 struct tpacpi_led_classdev *data =
4981 container_of(led_cdev,
4982 struct tpacpi_led_classdev,
4983 led_classdev);
75bd3bf2
HMH		 4984 data->new_state = (brightness != LED_OFF) ?
4985 TPACPI_LED_ON : TPACPI_LED_OFF;
e0e3c061 4986 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4987}
4988
4989static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4990{
72a979f0 4991 return (light_get_status() == 1) ? LED_FULL : LED_OFF;
e306501d
HMH		 4992}
4993
4994static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4995 .led_classdev = {
4996 .name = "tpacpi::thinklight",
4997 .brightness_set = &light_sysfs_set,
4998 .brightness_get = &light_sysfs_get,
4999 }
5000};
5001
a5763f22 5002static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 5003{
9c0a76e1 5004 int rc;
e306501d 5005
fe08bc4b
HMH		 5006 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
5007
e28393c0
HMH		 5008 if (tpacpi_is_ibm()) {
5009 TPACPI_ACPIHANDLE_INIT(ledb);
5010 TPACPI_ACPIHANDLE_INIT(lght);
5011 }
e0c7dfe7 5012 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 5013 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 5014
78f81cc4 5015 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 5016 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 5017
d8fd94d9 5018 if (tp_features.light)
78f81cc4
BD		 5019 /* light status not supported on
5020 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 5021 tp_features.light_status =
5022 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 5023
9c0a76e1
HMH		 5024 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
5025 str_supported(tp_features.light),
5026 str_supported(tp_features.light_status));
fe08bc4b 5027
9c0a76e1
HMH		 5028 if (!tp_features.light)
5029 return 1;
5030
5031 rc = led_classdev_register(&tpacpi_pdev->dev,
5032 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 5033
5034 if (rc < 0) {
5035 tp_features.light = 0;
5036 tp_features.light_status = 0;
9c0a76e1
HMH		 5037 } else {
5038 rc = 0;
e306501d 5039 }
9c0a76e1 5040
e306501d
HMH		 5041 return rc;
5042}
5043
5044static void light_exit(void)
5045{
5046 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
6d394e19 5047 flush_workqueue(tpacpi_wq);
1da177e4
LT		 5048}
5049
887965e6 5050static int light_read(struct seq_file *m)
1da177e4 5051{
4fa6811b 5052 int status;
1da177e4 5053
d8fd94d9 5054 if (!tp_features.light) {
887965e6 5055 seq_printf(m, "status:\t\tnot supported\n");
d8fd94d9 5056 } else if (!tp_features.light_status) {
887965e6
AD		 5057 seq_printf(m, "status:\t\tunknown\n");
5058 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5059 } else {
4fa6811b
HMH		 5060 status = light_get_status();
5061 if (status < 0)
5062 return status;
887965e6
AD		 5063 seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
5064 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5065 }
1da177e4 5066
887965e6 5067 return 0;
1da177e4
LT		 5068}
5069
78f81cc4 5070static int light_write(char *buf)
1da177e4 5071{
1da177e4 5072 char *cmd;
4fa6811b 5073 int newstatus = 0;
78f81cc4 5074
d8fd94d9 5075 if (!tp_features.light)
78f81cc4
BD		 5076 return -ENODEV;
5077
1da177e4
LT		 5078 while ((cmd = next_cmd(&buf))) {
5079 if (strlencmp(cmd, "on") == 0) {
4fa6811b 5080 newstatus = 1;
1da177e4 5081 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 5082 newstatus = 0;
1da177e4
LT		 5083 } else
5084 return -EINVAL;
1da177e4
LT		 5085 }
5086
4fa6811b 5087 return light_set_status(newstatus);
1da177e4
LT		 5088}
5089
a5763f22
HMH		 5090static struct ibm_struct light_driver_data = {
5091 .name = "light",
5092 .read = light_read,
5093 .write = light_write,
e306501d 5094 .exit = light_exit,
a5763f22
HMH		 5095};
5096
56b6aeb0
HMH		 5097/*************************************************************************
5098 * CMOS subdriver
5099 */
5100
b616004c
HMH		 5101/* sysfs cmos_command -------------------------------------------------- */
5102static ssize_t cmos_command_store(struct device *dev,
5103 struct device_attribute *attr,
5104 const char *buf, size_t count)
5105{
5106 unsigned long cmos_cmd;
5107 int res;
5108
5109 if (parse_strtoul(buf, 21, &cmos_cmd))
5110 return -EINVAL;
5111
5112 res = issue_thinkpad_cmos_command(cmos_cmd);
72a979f0 5113 return (res) ? res : count;
b616004c
HMH		 5114}
5115
5116static struct device_attribute dev_attr_cmos_command =
5117 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
5118
5119/* --------------------------------------------------------------------- */
5120
a5763f22 5121static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 5122{
b616004c
HMH		 5123 int res;
5124
fe08bc4b
HMH		 5125 vdbg_printk(TPACPI_DBG_INIT,
5126 "initializing cmos commands subdriver\n");
5127
e0c7dfe7 5128 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 5129
fe08bc4b
HMH		 5130 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
5131 str_supported(cmos_handle != NULL));
b616004c
HMH		 5132
5133 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
5134 if (res)
5135 return res;
5136
72a979f0 5137 return (cmos_handle) ? 0 : 1;
5fba344c
HMH		 5138}
5139
b616004c
HMH		 5140static void cmos_exit(void)
5141{
5142 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
5143}
5144
887965e6 5145static int cmos_read(struct seq_file *m)
1da177e4 5146{
78f81cc4
BD		 5147 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
5148 R30, R31, T20-22, X20-21 */
1da177e4 5149 if (!cmos_handle)
887965e6 5150 seq_printf(m, "status:\t\tnot supported\n");
1da177e4 5151 else {
887965e6
AD		 5152 seq_printf(m, "status:\t\tsupported\n");
5153 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 5154 }
5155
887965e6 5156 return 0;
1da177e4
LT		 5157}
5158
78f81cc4 5159static int cmos_write(char *buf)
1da177e4
LT		 5160{
5161 char *cmd;
c9bea99c 5162 int cmos_cmd, res;
1da177e4
LT		 5163
5164 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 5165 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
5166 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 5167 /* cmos_cmd set */
5168 } else
5169 return -EINVAL;
5170
c9bea99c
HMH		 5171 res = issue_thinkpad_cmos_command(cmos_cmd);
5172 if (res)
5173 return res;
1da177e4
LT		 5174 }
5175
5176 return 0;
78f81cc4
BD		 5177}
5178
a5763f22
HMH		 5179static struct ibm_struct cmos_driver_data = {
5180 .name = "cmos",
5181 .read = cmos_read,
5182 .write = cmos_write,
b616004c 5183 .exit = cmos_exit,
a5763f22 5184};
56b6aeb0
HMH		 5185
5186/*************************************************************************
5187 * LED subdriver
5188 */
5189
f74a27d4
HMH		 5190enum led_access_mode {
5191 TPACPI_LED_NONE = 0,
5192 TPACPI_LED_570, /* 570 */
5193 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5194 TPACPI_LED_NEW, /* all others */
5195};
5196
5197enum { /* For TPACPI_LED_OLD */
5198 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
5199 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
5200 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
5201};
5202
9a8e1738 5203static enum led_access_mode led_supported;
78f81cc4 5204
2cbb5c8f 5205static acpi_handle led_handle;
56b6aeb0 5206
f21179a4 5207#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 5208static struct tpacpi_led_classdev *tpacpi_leds;
5209static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 5210static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 5211 /* there's a limit of 19 chars + NULL before 2.6.26 */
5212 "tpacpi::power",
5213 "tpacpi:orange:batt",
5214 "tpacpi:green:batt",
5215 "tpacpi::dock_active",
5216 "tpacpi::bay_active",
5217 "tpacpi::dock_batt",
5218 "tpacpi::unknown_led",
5219 "tpacpi::standby",
f21179a4
HMH		 5220 "tpacpi::dock_status1",
5221 "tpacpi::dock_status2",
5222 "tpacpi::unknown_led2",
5223 "tpacpi::unknown_led3",
5224 "tpacpi::thinkvantage",
af116101 5225};
f21179a4 5226#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 5227
5228static inline bool tpacpi_is_led_restricted(const unsigned int led)
5229{
5230#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5231 return false;
5232#else
f21179a4 5233 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5234#endif
5235}
af116101 5236
24e45bbe 5237static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5238{
5239 int status;
af116101 5240 enum led_status_t led_s;
4fa6811b
HMH		 5241
5242 switch (led_supported) {
5243 case TPACPI_LED_570:
5244 if (!acpi_evalf(ec_handle,
5245 &status, "GLED", "dd", 1 << led))
5246 return -EIO;
72a979f0 5247 led_s = (status == 0) ?
4fa6811b 5248 TPACPI_LED_OFF :
72a979f0 5249 ((status == 1) ?
4fa6811b
HMH		 5250 TPACPI_LED_ON :
5251 TPACPI_LED_BLINK);
af116101
HMH		 5252 tpacpi_led_state_cache[led] = led_s;
5253 return led_s;
4fa6811b
HMH		 5254 default:
5255 return -ENXIO;
5256 }
5257
5258 /* not reached */
5259}
5260
24e45bbe
HMH		 5261static int led_set_status(const unsigned int led,
5262 const enum led_status_t ledstatus)
4fa6811b
HMH		 5263{
5264 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5265 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5266 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5267
5268 int rc = 0;
5269
5270 switch (led_supported) {
5271 case TPACPI_LED_570:
24e45bbe 5272 /* 570 */
a4d5effc 5273 if (unlikely(led > 7))
24e45bbe 5274 return -EINVAL;
a4d5effc
HMH		 5275 if (unlikely(tpacpi_is_led_restricted(led)))
5276 return -EPERM;
24e45bbe
HMH		 5277 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5278 (1 << led), led_sled_arg1[ledstatus]))
5279 rc = -EIO;
5280 break;
4fa6811b 5281 case TPACPI_LED_OLD:
24e45bbe 5282 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5283 if (unlikely(led > 7))
24e45bbe 5284 return -EINVAL;
a4d5effc
HMH		 5285 if (unlikely(tpacpi_is_led_restricted(led)))
5286 return -EPERM;
24e45bbe
HMH		 5287 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5288 if (rc >= 0)
5289 rc = ec_write(TPACPI_LED_EC_HLBL,
5290 (ledstatus == TPACPI_LED_BLINK) << led);
5291 if (rc >= 0)
5292 rc = ec_write(TPACPI_LED_EC_HLCL,
5293 (ledstatus != TPACPI_LED_OFF) << led);
5294 break;
4fa6811b 5295 case TPACPI_LED_NEW:
24e45bbe 5296 /* all others */
a4d5effc
HMH		 5297 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5298 return -EINVAL;
5299 if (unlikely(tpacpi_is_led_restricted(led)))
5300 return -EPERM;
24e45bbe
HMH		 5301 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5302 led, led_led_arg1[ledstatus]))
5303 rc = -EIO;
5304 break;
4fa6811b
HMH		 5305 default:
5306 rc = -ENXIO;
5307 }
5308
af116101
HMH		 5309 if (!rc)
5310 tpacpi_led_state_cache[led] = ledstatus;
5311
5312 return rc;
5313}
5314
af116101
HMH		 5315static void led_set_status_worker(struct work_struct *work)
5316{
5317 struct tpacpi_led_classdev *data =
5318 container_of(work, struct tpacpi_led_classdev, work);
5319
5320 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 5321 led_set_status(data->led, data->new_state);
af116101
HMH		 5322}
5323
5324static void led_sysfs_set(struct led_classdev *led_cdev,
5325 enum led_brightness brightness)
5326{
5327 struct tpacpi_led_classdev *data = container_of(led_cdev,
5328 struct tpacpi_led_classdev, led_classdev);
5329
75bd3bf2
HMH		 5330 if (brightness == LED_OFF)
5331 data->new_state = TPACPI_LED_OFF;
5332 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
5333 data->new_state = TPACPI_LED_ON;
5334 else
5335 data->new_state = TPACPI_LED_BLINK;
5336
e0e3c061 5337 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5338}
5339
5340static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5341 unsigned long *delay_on, unsigned long *delay_off)
5342{
5343 struct tpacpi_led_classdev *data = container_of(led_cdev,
5344 struct tpacpi_led_classdev, led_classdev);
5345
5346 /* Can we choose the flash rate? */
5347 if (*delay_on == 0 && *delay_off == 0) {
5348 /* yes. set them to the hardware blink rate (1 Hz) */
5349 *delay_on = 500; /* ms */
5350 *delay_off = 500; /* ms */
5351 } else if ((*delay_on != 500) || (*delay_off != 500))
5352 return -EINVAL;
5353
75bd3bf2 5354 data->new_state = TPACPI_LED_BLINK;
e0e3c061 5355 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5356
5357 return 0;
5358}
5359
5360static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5361{
5362 int rc;
5363
5364 struct tpacpi_led_classdev *data = container_of(led_cdev,
5365 struct tpacpi_led_classdev, led_classdev);
5366
5367 rc = led_get_status(data->led);
5368
5369 if (rc == TPACPI_LED_OFF || rc < 0)
5370 rc = LED_OFF; /* no error handling in led class :( */
5371 else
5372 rc = LED_FULL;
5373
4fa6811b
HMH		 5374 return rc;
5375}
5376
af116101
HMH		 5377static void led_exit(void)
5378{
5379 unsigned int i;
5380
5381 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5382 if (tpacpi_leds[i].led_classdev.name)
5383 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5384 }
5385
e03e389d 5386 flush_workqueue(tpacpi_wq);
af116101 5387 kfree(tpacpi_leds);
af116101
HMH		 5388}
5389
a4d5effc
HMH		 5390static int __init tpacpi_init_led(unsigned int led)
5391{
5392 int rc;
5393
5394 tpacpi_leds[led].led = led;
5395
f21179a4
HMH		 5396 /* LEDs with no name don't get registered */
5397 if (!tpacpi_led_names[led])
5398 return 0;
5399
a4d5effc
HMH		 5400 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
5401 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5402 if (led_supported == TPACPI_LED_570)
5403 tpacpi_leds[led].led_classdev.brightness_get =
5404 &led_sysfs_get;
5405
5406 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5407
5408 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
5409
5410 rc = led_classdev_register(&tpacpi_pdev->dev,
5411 &tpacpi_leds[led].led_classdev);
5412 if (rc < 0)
5413 tpacpi_leds[led].led_classdev.name = NULL;
5414
5415 return rc;
5416}
5417
f21179a4
HMH		 5418static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5419 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5420 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5421 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5422
5423 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5424 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5425 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5426 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5427 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5428 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5429 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5430 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5431
5432 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5433 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5434 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5435 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5436 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5437
5438 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5439 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5440 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5441 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5442
5443 /* (1) - may have excess leds enabled on MSB */
5444
5445 /* Defaults (order matters, keep last, don't reorder!) */
5446 { /* Lenovo */
5447 .vendor = PCI_VENDOR_ID_LENOVO,
5448 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5449 .quirks = 0x1fffU,
5450 },
5451 { /* IBM ThinkPads with no EC version string */
5452 .vendor = PCI_VENDOR_ID_IBM,
5453 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5454 .quirks = 0x00ffU,
5455 },
5456 { /* IBM ThinkPads with EC version string */
5457 .vendor = PCI_VENDOR_ID_IBM,
5458 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5459 .quirks = 0x00bfU,
5460 },
5461};
5462
5463#undef TPACPI_LEDQ_IBM
5464#undef TPACPI_LEDQ_LNV
5465
2cbb5c8f
HMH		 5466static enum led_access_mode __init led_init_detect_mode(void)
5467{
5468 acpi_status status;
5469
5470 if (tpacpi_is_ibm()) {
5471 /* 570 */
5472 status = acpi_get_handle(ec_handle, "SLED", &led_handle);
5473 if (ACPI_SUCCESS(status))
5474 return TPACPI_LED_570;
5475
5476 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5477 status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
5478 if (ACPI_SUCCESS(status))
5479 return TPACPI_LED_OLD;
5480 }
5481
5482 /* most others */
5483 status = acpi_get_handle(ec_handle, "LED", &led_handle);
5484 if (ACPI_SUCCESS(status))
5485 return TPACPI_LED_NEW;
5486
5487 /* R30, R31, and unknown firmwares */
5488 led_handle = NULL;
5489 return TPACPI_LED_NONE;
5490}
5491
a5763f22 5492static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 5493{
af116101
HMH		 5494 unsigned int i;
5495 int rc;
f21179a4 5496 unsigned long useful_leds;
af116101 5497
fe08bc4b
HMH		 5498 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5499
2cbb5c8f 5500 led_supported = led_init_detect_mode();
78f81cc4 5501
fcb44e12
AL		 5502 if (led_supported != TPACPI_LED_NONE) {
5503 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5504 ARRAY_SIZE(led_useful_qtable));
5505
5506 if (!useful_leds) {
5507 led_handle = NULL;
5508 led_supported = TPACPI_LED_NONE;
5509 }
5510 }
5511
fe08bc4b
HMH		 5512 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5513 str_supported(led_supported), led_supported);
5514
f21179a4
HMH		 5515 if (led_supported == TPACPI_LED_NONE)
5516 return 1;
5517
af116101
HMH		 5518 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
5519 GFP_KERNEL);
5520 if (!tpacpi_leds) {
0978e012 5521 pr_err("Out of memory for LED data\n");
af116101
HMH		 5522 return -ENOMEM;
5523 }
5524
5525 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
edf2d778
AL		 5526 tpacpi_leds[i].led = -1;
5527
f21179a4
HMH		 5528 if (!tpacpi_is_led_restricted(i) &&
5529 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 5530 rc = tpacpi_init_led(i);
5531 if (rc < 0) {
5532 led_exit();
5533 return rc;
5534 }
af116101
HMH		 5535 }
5536 }
5537
a4d5effc 5538#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
0978e012
JP		 5539 pr_notice("warning: userspace override of important "
5540 "firmware LEDs is enabled\n");
a4d5effc 5541#endif
f21179a4 5542 return 0;
78f81cc4
BD		 5543}
5544
4fa6811b
HMH		 5545#define str_led_status(s) \
5546 ((s) == TPACPI_LED_OFF ? "off" : \
5547 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4 5548
887965e6 5549static int led_read(struct seq_file *m)
1da177e4 5550{
78f81cc4 5551 if (!led_supported) {
887965e6
AD		 5552 seq_printf(m, "status:\t\tnot supported\n");
5553 return 0;
78f81cc4 5554 }
887965e6 5555 seq_printf(m, "status:\t\tsupported\n");
78f81cc4 5556
efa27145 5557 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5558 /* 570 */
5559 int i, status;
5560 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5561 status = led_get_status(i);
5562 if (status < 0)
78f81cc4 5563 return -EIO;
887965e6 5564 seq_printf(m, "%d:\t\t%s\n",
4fa6811b 5565 i, str_led_status(status));
78f81cc4
BD		 5566 }
5567 }
5568
887965e6 5569 seq_printf(m, "commands:\t"
f21179a4 5570 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4 5571
887965e6 5572 return 0;
1da177e4
LT		 5573}
5574
78f81cc4 5575static int led_write(char *buf)
1da177e4
LT		 5576{
5577 char *cmd;
4fa6811b
HMH		 5578 int led, rc;
5579 enum led_status_t s;
78f81cc4
BD		 5580
5581 if (!led_supported)
5582 return -ENODEV;
1da177e4
LT		 5583
5584 while ((cmd = next_cmd(&buf))) {
edf2d778 5585 if (sscanf(cmd, "%d", &led) != 1)
1da177e4
LT		 5586 return -EINVAL;
5587
edf2d778
AL		 5588 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) ||
5589 tpacpi_leds[led].led < 0)
5590 return -ENODEV;
5591
78f81cc4 5592 if (strstr(cmd, "off")) {
4fa6811b 5593 s = TPACPI_LED_OFF;
1da177e4 5594 } else if (strstr(cmd, "on")) {
4fa6811b 5595 s = TPACPI_LED_ON;
78f81cc4 5596 } else if (strstr(cmd, "blink")) {
4fa6811b 5597 s = TPACPI_LED_BLINK;
78f81cc4 5598 } else {
4fa6811b 5599 return -EINVAL;
78f81cc4 5600 }
4fa6811b
HMH		 5601
5602 rc = led_set_status(led, s);
5603 if (rc < 0)
5604 return rc;
78f81cc4
BD		 5605 }
5606
5607 return 0;
5608}
5609
a5763f22
HMH		 5610static struct ibm_struct led_driver_data = {
5611 .name = "led",
5612 .read = led_read,
5613 .write = led_write,
af116101 5614 .exit = led_exit,
a5763f22
HMH		 5615};
5616
56b6aeb0
HMH		 5617/*************************************************************************
5618 * Beep subdriver
5619 */
5620
e0c7dfe7 5621TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 5622
60201732
HMH		 5623#define TPACPI_BEEP_Q1 0x0001
5624
5625static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5626 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5627 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5628};
5629
a5763f22 5630static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 5631{
60201732
HMH		 5632 unsigned long quirks;
5633
fe08bc4b
HMH		 5634 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5635
e0c7dfe7 5636 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 5637
fe08bc4b
HMH		 5638 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5639 str_supported(beep_handle != NULL));
5640
60201732
HMH		 5641 quirks = tpacpi_check_quirks(beep_quirk_table,
5642 ARRAY_SIZE(beep_quirk_table));
5643
5644 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5645
72a979f0 5646 return (beep_handle) ? 0 : 1;
5fba344c
HMH		 5647}
5648
887965e6 5649static int beep_read(struct seq_file *m)
78f81cc4 5650{
78f81cc4 5651 if (!beep_handle)
887965e6 5652 seq_printf(m, "status:\t\tnot supported\n");
78f81cc4 5653 else {
887965e6
AD		 5654 seq_printf(m, "status:\t\tsupported\n");
5655 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
78f81cc4
BD		 5656 }
5657
887965e6 5658 return 0;
78f81cc4
BD		 5659}
5660
5661static int beep_write(char *buf)
5662{
5663 char *cmd;
5664 int beep_cmd;
5665
5666 if (!beep_handle)
5667 return -ENODEV;
5668
5669 while ((cmd = next_cmd(&buf))) {
5670 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5671 beep_cmd >= 0 && beep_cmd <= 17) {
5672 /* beep_cmd set */
5673 } else
5674 return -EINVAL;
60201732
HMH		 5675 if (tp_features.beep_needs_two_args) {
5676 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5677 beep_cmd, 0))
5678 return -EIO;
5679 } else {
5680 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5681 beep_cmd))
5682 return -EIO;
5683 }
78f81cc4
BD		 5684 }
5685
5686 return 0;
5687}
5688
a5763f22
HMH		 5689static struct ibm_struct beep_driver_data = {
5690 .name = "beep",
5691 .read = beep_read,
5692 .write = beep_write,
5693};
5694
56b6aeb0
HMH		 5695/*************************************************************************
5696 * Thermal subdriver
5697 */
78f81cc4 5698
f74a27d4
HMH		 5699enum thermal_access_mode {
5700 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5701 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5702 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5703 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5704 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5705};
5706
5707enum { /* TPACPI_THERMAL_TPEC_* */
5708 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5709 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5710 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 5711
5712 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 5713};
5714
9ebd9e83 5715
f74a27d4
HMH		 5716#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5717struct ibm_thermal_sensors_struct {
5718 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5719};
5720
a26f878a 5721static enum thermal_access_mode thermal_read_mode;
78f81cc4 5722
b21a15f6
HMH		 5723/* idx is zero-based */
5724static int thermal_get_sensor(int idx, s32 *value)
5725{
5726 int t;
5727 s8 tmp;
5728 char tmpi[5];
5729
5730 t = TP_EC_THERMAL_TMP0;
5731
5732 switch (thermal_read_mode) {
5733#if TPACPI_MAX_THERMAL_SENSORS >= 16
5734 case TPACPI_THERMAL_TPEC_16:
5735 if (idx >= 8 && idx <= 15) {
5736 t = TP_EC_THERMAL_TMP8;
5737 idx -= 8;
5738 }
5739 /* fallthrough */
5740#endif
5741 case TPACPI_THERMAL_TPEC_8:
5742 if (idx <= 7) {
5743 if (!acpi_ec_read(t + idx, &tmp))
5744 return -EIO;
5745 *value = tmp * 1000;
5746 return 0;
5747 }
5748 break;
5749
5750 case TPACPI_THERMAL_ACPI_UPDT:
5751 if (idx <= 7) {
5752 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5753 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5754 return -EIO;
5755 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5756 return -EIO;
5757 *value = (t - 2732) * 100;
5758 return 0;
5759 }
5760 break;
5761
5762 case TPACPI_THERMAL_ACPI_TMP07:
5763 if (idx <= 7) {
5764 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5765 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5766 return -EIO;
5767 if (t > 127 || t < -127)
5768 t = TP_EC_THERMAL_TMP_NA;
5769 *value = t * 1000;
5770 return 0;
5771 }
5772 break;
5773
5774 case TPACPI_THERMAL_NONE:
5775 default:
5776 return -ENOSYS;
5777 }
5778
5779 return -EINVAL;
5780}
5781
5782static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5783{
5784 int res, i;
5785 int n;
5786
5787 n = 8;
5788 i = 0;
5789
5790 if (!s)
5791 return -EINVAL;
5792
5793 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5794 n = 16;
5795
35ff8b9f 5796 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5797 res = thermal_get_sensor(i, &s->temp[i]);
5798 if (res)
5799 return res;
5800 }
5801
5802 return n;
5803}
f74a27d4 5804
9ebd9e83
HMH		 5805static void thermal_dump_all_sensors(void)
5806{
5807 int n, i;
5808 struct ibm_thermal_sensors_struct t;
5809
5810 n = thermal_get_sensors(&t);
5811 if (n <= 0)
5812 return;
5813
0978e012 5814 pr_notice("temperatures (Celsius):");
9ebd9e83
HMH		 5815
5816 for (i = 0; i < n; i++) {
5817 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
0978e012 5818 pr_cont(" %d", (int)(t.temp[i] / 1000));
9ebd9e83 5819 else
0978e012 5820 pr_cont(" N/A");
9ebd9e83
HMH		 5821 }
5822
0978e012 5823 pr_cont("\n");
9ebd9e83
HMH		 5824}
5825
2c37aa4e
HMH		 5826/* sysfs temp##_input -------------------------------------------------- */
5827
5828static ssize_t thermal_temp_input_show(struct device *dev,
5829 struct device_attribute *attr,
5830 char *buf)
5831{
5832 struct sensor_device_attribute *sensor_attr =
5833 to_sensor_dev_attr(attr);
5834 int idx = sensor_attr->index;
5835 s32 value;
5836 int res;
5837
5838 res = thermal_get_sensor(idx, &value);
5839 if (res)
5840 return res;
9ebd9e83 5841 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 5842 return -ENXIO;
5843
5844 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5845}
5846
5847#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5848 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5849 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5850
5851static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5852 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5853 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5854 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5855 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5856 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5857 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5858 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5859 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5860 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5861 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5862 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5863 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5864 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5865 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5866 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5867 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5868};
5869
5870#define THERMAL_ATTRS(X) \
5871 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5872
5873static struct attribute *thermal_temp_input_attr[] = {
5874 THERMAL_ATTRS(8),
5875 THERMAL_ATTRS(9),
5876 THERMAL_ATTRS(10),
5877 THERMAL_ATTRS(11),
5878 THERMAL_ATTRS(12),
5879 THERMAL_ATTRS(13),
5880 THERMAL_ATTRS(14),
5881 THERMAL_ATTRS(15),
5882 THERMAL_ATTRS(0),
5883 THERMAL_ATTRS(1),
5884 THERMAL_ATTRS(2),
5885 THERMAL_ATTRS(3),
5886 THERMAL_ATTRS(4),
5887 THERMAL_ATTRS(5),
5888 THERMAL_ATTRS(6),
5889 THERMAL_ATTRS(7),
5890 NULL
5891};
5892
5893static const struct attribute_group thermal_temp_input16_group = {
5894 .attrs = thermal_temp_input_attr
5895};
5896
5897static const struct attribute_group thermal_temp_input8_group = {
5898 .attrs = &thermal_temp_input_attr[8]
5899};
5900
5901#undef THERMAL_SENSOR_ATTR_TEMP
5902#undef THERMAL_ATTRS
5903
5904/* --------------------------------------------------------------------- */
5905
a5763f22 5906static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5907{
60eb0b35
HMH		 5908 u8 t, ta1, ta2;
5909 int i;
5fba344c 5910 int acpi_tmp7;
2c37aa4e 5911 int res;
5fba344c 5912
fe08bc4b
HMH		 5913 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5914
5fba344c 5915 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5916
3d6f99ca 5917 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5918 /*
5919 * Direct EC access mode: sensors at registers
5920 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5921 * non-implemented, thermal sensors return 0x80 when
5922 * not available
5923 */
78f81cc4 5924
60eb0b35
HMH		 5925 ta1 = ta2 = 0;
5926 for (i = 0; i < 8; i++) {
04cc862c 5927 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5928 ta1 |= t;
5929 } else {
5930 ta1 = 0;
5931 break;
5932 }
04cc862c 5933 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5934 ta2 |= t;
5935 } else {
5936 ta1 = 0;
5937 break;
5938 }
5939 }
5940 if (ta1 == 0) {
5941 /* This is sheer paranoia, but we handle it anyway */
5942 if (acpi_tmp7) {
0978e012 5943 pr_err("ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5944 "falling back to ACPI TMPx access "
5945 "mode\n");
efa27145 5946 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5947 } else {
0978e012 5948 pr_err("ThinkPad ACPI EC access misbehaving, "
60eb0b35 5949 "disabling thermal sensors access\n");
efa27145 5950 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5951 }
5952 } else {
5953 thermal_read_mode =
5954 (ta2 != 0) ?
efa27145 5955 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5956 }
5957 } else if (acpi_tmp7) {
e28393c0
HMH		 5958 if (tpacpi_is_ibm() &&
5959 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
a26f878a 5960 /* 600e/x, 770e, 770x */
efa27145 5961 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a 5962 } else {
e28393c0 5963 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
efa27145 5964 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5965 }
5966 } else {
5967 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5968 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5969 }
78f81cc4 5970
fe08bc4b
HMH		 5971 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5972 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5973 thermal_read_mode);
5974
35ff8b9f 5975 switch (thermal_read_mode) {
2c37aa4e 5976 case TPACPI_THERMAL_TPEC_16:
7fd40029 5977 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5978 &thermal_temp_input16_group);
5979 if (res)
5980 return res;
5981 break;
5982 case TPACPI_THERMAL_TPEC_8:
5983 case TPACPI_THERMAL_ACPI_TMP07:
5984 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5985 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5986 &thermal_temp_input8_group);
5987 if (res)
5988 return res;
5989 break;
5990 case TPACPI_THERMAL_NONE:
5991 default:
5992 return 1;
5993 }
5994
5995 return 0;
5996}
5997
5998static void thermal_exit(void)
5999{
35ff8b9f 6000 switch (thermal_read_mode) {
2c37aa4e 6001 case TPACPI_THERMAL_TPEC_16:
7fd40029 6002 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 6003 &thermal_temp_input16_group);
6004 break;
6005 case TPACPI_THERMAL_TPEC_8:
6006 case TPACPI_THERMAL_ACPI_TMP07:
6007 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 6008 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
f04d5e01 6009 &thermal_temp_input8_group);
2c37aa4e
HMH		 6010 break;
6011 case TPACPI_THERMAL_NONE:
6012 default:
6013 break;
6014 }
78f81cc4
BD		 6015}
6016
887965e6 6017static int thermal_read(struct seq_file *m)
a26f878a 6018{
a26f878a
HMH		 6019 int n, i;
6020 struct ibm_thermal_sensors_struct t;
6021
6022 n = thermal_get_sensors(&t);
6023 if (unlikely(n < 0))
6024 return n;
6025
887965e6 6026 seq_printf(m, "temperatures:\t");
a26f878a
HMH		 6027
6028 if (n > 0) {
6029 for (i = 0; i < (n - 1); i++)
887965e6
AD		 6030 seq_printf(m, "%d ", t.temp[i] / 1000);
6031 seq_printf(m, "%d\n", t.temp[i] / 1000);
a26f878a 6032 } else
887965e6 6033 seq_printf(m, "not supported\n");
78f81cc4 6034
887965e6 6035 return 0;
78f81cc4
BD		 6036}
6037
a5763f22
HMH		 6038static struct ibm_struct thermal_driver_data = {
6039 .name = "thermal",
6040 .read = thermal_read,
2c37aa4e 6041 .exit = thermal_exit,
a5763f22
HMH		 6042};
6043
56b6aeb0
HMH		 6044/*************************************************************************
6045 * Backlight/brightness subdriver
6046 */
6047
f74a27d4
HMH		 6048#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
6049
0e501834
HMH		 6050/*
6051 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
6052 * CMOS NVRAM byte 0x5E, bits 0-3.
6053 *
6054 * EC HBRV (0x31) has the following layout
6055 * Bit 7: unknown function
6056 * Bit 6: unknown function
6057 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
6058 * Bit 4: must be set to zero to avoid problems
6059 * Bit 3-0: backlight brightness level
6060 *
6061 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 6062 *
6063 * WARNING: The X61 has been verified to use HBRV for something else, so
6064 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
6065 * testing on the very early *60 Lenovo models...
0e501834
HMH		 6066 */
6067
e11aecf1
HMH		 6068enum {
6069 TP_EC_BACKLIGHT = 0x31,
6070
6071 /* TP_EC_BACKLIGHT bitmasks */
6072 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
6073 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
6074 TP_EC_BACKLIGHT_MAPSW = 0x20,
6075};
6076
0e501834
HMH		 6077enum tpacpi_brightness_access_mode {
6078 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
6079 TPACPI_BRGHT_MODE_EC, /* EC control */
6080 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
6081 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6082 TPACPI_BRGHT_MODE_MAX
6083};
6084
94954cc6 6085static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 6086
6087static enum tpacpi_brightness_access_mode brightness_mode =
6088 TPACPI_BRGHT_MODE_MAX;
6089
f74a27d4
HMH		 6090static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
6091
b21a15f6 6092static struct mutex brightness_mutex;
56b6aeb0 6093
0e501834
HMH		 6094/* NVRAM brightness access,
6095 * call with brightness_mutex held! */
6096static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 6097{
0e501834 6098 u8 lnvram;
b21a15f6 6099
0e501834
HMH		 6100 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
6101 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6102 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
77775838 6103 lnvram &= bright_maxlvl;
0e501834
HMH		 6104
6105 return lnvram;
6106}
6107
6108static void tpacpi_brightness_checkpoint_nvram(void)
6109{
6110 u8 lec = 0;
6111 u8 b_nvram;
6112
6113 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
6114 return;
6115
6116 vdbg_printk(TPACPI_DBG_BRGHT,
6117 "trying to checkpoint backlight level to NVRAM...\n");
6118
6119 if (mutex_lock_killable(&brightness_mutex) < 0)
6120 return;
6121
6122 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6123 goto unlock;
6124 lec &= TP_EC_BACKLIGHT_LVLMSK;
6125 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
6126
6127 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6128 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
6129 /* NVRAM needs update */
6130 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
6131 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
6132 b_nvram |= lec;
6133 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
6134 dbg_printk(TPACPI_DBG_BRGHT,
6135 "updated NVRAM backlight level to %u (0x%02x)\n",
6136 (unsigned int) lec, (unsigned int) b_nvram);
6137 } else
6138 vdbg_printk(TPACPI_DBG_BRGHT,
6139 "NVRAM backlight level already is %u (0x%02x)\n",
6140 (unsigned int) lec, (unsigned int) b_nvram);
6141
6142unlock:
6143 mutex_unlock(&brightness_mutex);
6144}
6145
6146
6147/* call with brightness_mutex held! */
6148static int tpacpi_brightness_get_raw(int *status)
6149{
6150 u8 lec = 0;
6151
6152 switch (brightness_mode) {
6153 case TPACPI_BRGHT_MODE_UCMS_STEP:
6154 *status = tpacpi_brightness_nvram_get();
6155 return 0;
6156 case TPACPI_BRGHT_MODE_EC:
6157 case TPACPI_BRGHT_MODE_ECNVRAM:
6158 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 6159 return -EIO;
0e501834
HMH		 6160 *status = lec;
6161 return 0;
6162 default:
6163 return -ENXIO;
b21a15f6 6164 }
0e501834
HMH		 6165}
6166
6167/* call with brightness_mutex held! */
6168/* do NOT call with illegal backlight level value */
6169static int tpacpi_brightness_set_ec(unsigned int value)
6170{
6171 u8 lec = 0;
6172
6173 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6174 return -EIO;
6175
6176 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
6177 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6178 (value & TP_EC_BACKLIGHT_LVLMSK))))
6179 return -EIO;
6180
6181 return 0;
6182}
6183
6184/* call with brightness_mutex held! */
6185static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6186{
6187 int cmos_cmd, inc;
6188 unsigned int current_value, i;
6189
6190 current_value = tpacpi_brightness_nvram_get();
6191
6192 if (value == current_value)
6193 return 0;
6194
6195 cmos_cmd = (value > current_value) ?
6196 TP_CMOS_BRIGHTNESS_UP :
6197 TP_CMOS_BRIGHTNESS_DOWN;
6198 inc = (value > current_value) ? 1 : -1;
6199
6200 for (i = current_value; i != value; i += inc)
6201 if (issue_thinkpad_cmos_command(cmos_cmd))
6202 return -EIO;
b21a15f6 6203
e11aecf1 6204 return 0;
b21a15f6
HMH		 6205}
6206
6207/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6208static int brightness_set(unsigned int value)
b21a15f6 6209{
0e501834 6210 int res;
b21a15f6 6211
bd3c7b9e 6212 if (value > bright_maxlvl)
b21a15f6
HMH		 6213 return -EINVAL;
6214
0e501834
HMH		 6215 vdbg_printk(TPACPI_DBG_BRGHT,
6216 "set backlight level to %d\n", value);
6217
7646ea88 6218 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6219 if (res < 0)
6220 return res;
6221
0e501834
HMH		 6222 switch (brightness_mode) {
6223 case TPACPI_BRGHT_MODE_EC:
6224 case TPACPI_BRGHT_MODE_ECNVRAM:
6225 res = tpacpi_brightness_set_ec(value);
6226 break;
6227 case TPACPI_BRGHT_MODE_UCMS_STEP:
6228 res = tpacpi_brightness_set_ucmsstep(value);
6229 break;
6230 default:
6231 res = -ENXIO;
b21a15f6
HMH		 6232 }
6233
b21a15f6
HMH		 6234 mutex_unlock(&brightness_mutex);
6235 return res;
6236}
6237
6238/* sysfs backlight class ----------------------------------------------- */
6239
6240static int brightness_update_status(struct backlight_device *bd)
6241{
0e501834 6242 unsigned int level =
b21a15f6
HMH		 6243 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6244 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 6245 bd->props.brightness : 0;
6246
6247 dbg_printk(TPACPI_DBG_BRGHT,
6248 "backlight: attempt to set level to %d\n",
6249 level);
6250
6251 /* it is the backlight class's job (caller) to handle
6252 * EINTR and other errors properly */
6253 return brightness_set(level);
b21a15f6
HMH		 6254}
6255
e11aecf1 6256static int brightness_get(struct backlight_device *bd)
a3f104c0 6257{
e11aecf1 6258 int status, res;
a3f104c0 6259
0e501834 6260 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6261 if (res < 0)
0e501834
HMH		 6262 return 0;
6263
6264 res = tpacpi_brightness_get_raw(&status);
6265
6266 mutex_unlock(&brightness_mutex);
6267
6268 if (res < 0)
6269 return 0;
e11e211a 6270
e11aecf1 6271 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6272}
6273
347a2686
HMH		 6274static void tpacpi_brightness_notify_change(void)
6275{
6276 backlight_force_update(ibm_backlight_device,
6277 BACKLIGHT_UPDATE_HOTKEY);
6278}
6279
acc2472e 6280static const struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6281 .get_brightness = brightness_get,
6282 .update_status = brightness_update_status,
56b6aeb0 6283};
e11e211a 6284
b21a15f6 6285/* --------------------------------------------------------------------- */
e11e211a 6286
122f2672
HMH		 6287/*
6288 * Call _BCL method of video device. On some ThinkPads this will
6289 * switch the firmware to the ACPI brightness control mode.
6290 */
6291
77775838
HMH		 6292static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6293{
6294 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6295 union acpi_object *obj;
46445b6b 6296 struct acpi_device *device, *child;
77775838
HMH		 6297 int rc;
6298
46445b6b
AL		 6299 if (acpi_bus_get_device(handle, &device))
6300 return 0;
6301
6302 rc = 0;
6303 list_for_each_entry(child, &device->children, node) {
6304 acpi_status status = acpi_evaluate_object(child->handle, "_BCL",
6305 NULL, &buffer);
6306 if (ACPI_FAILURE(status))
6307 continue;
6308
77775838
HMH		 6309 obj = (union acpi_object *)buffer.pointer;
6310 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
0978e012 6311 pr_err("Unknown _BCL data, please report this to %s\n",
46445b6b 6312 TPACPI_MAIL);
77775838
HMH		 6313 rc = 0;
6314 } else {
6315 rc = obj->package.count;
6316 }
46445b6b 6317 break;
77775838
HMH		 6318 }
6319
6320 kfree(buffer.pointer);
6321 return rc;
6322}
6323
77775838
HMH		 6324
6325/*
6326 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6327 */
6328static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6329{
122f2672 6330 acpi_handle video_device;
77775838 6331 int bcl_levels = 0;
77775838 6332
46445b6b 6333 tpacpi_acpi_handle_locate("video", NULL, &video_device);
122f2672
HMH		 6334 if (video_device)
6335 bcl_levels = tpacpi_query_bcl_levels(video_device);
77775838 6336
122f2672 6337 tp_features.bright_acpimode = (bcl_levels > 0);
77775838 6338
122f2672 6339 return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
77775838
HMH		 6340}
6341
59fe4fe3
HMH		 6342/*
6343 * These are only useful for models that have only one possibility
6344 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6345 * these quirks.
6346 */
6347#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6348#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6349#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6350
6351static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6352 /* Models with ATI GPUs known to require ECNVRAM mode */
6353 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6354
6da25bf5 6355 /* Models with ATI GPUs that can use ECNVRAM */
7d1894d8 6356 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
59fe4fe3 6357 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
7d1894d8 6358 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
59fe4fe3
HMH		 6359 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6360
6da25bf5 6361 /* Models with Intel Extreme Graphics 2 */
7d1894d8 6362 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
a9f8eacc
HMH		 6363 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6364 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6365
6366 /* Models with Intel GMA900 */
6367 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6368 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6369 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6370};
6371
77775838
HMH		 6372/*
6373 * Returns < 0 for error, otherwise sets tp_features.bright_*
6374 * and bright_maxlvl.
6375 */
6376static void __init tpacpi_detect_brightness_capabilities(void)
6377{
6378 unsigned int b;
6379
6380 vdbg_printk(TPACPI_DBG_INIT,
6381 "detecting firmware brightness interface capabilities\n");
6382
6383 /* we could run a quirks check here (same table used by
6384 * brightness_init) if needed */
6385
6386 /*
6387 * We always attempt to detect acpi support, so as to switch
6388 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6389 * going to publish a backlight interface
6390 */
6391 b = tpacpi_check_std_acpi_brightness_support();
6392 switch (b) {
6393 case 16:
6394 bright_maxlvl = 15;
0978e012 6395 pr_info("detected a 16-level brightness capable ThinkPad\n");
77775838
HMH		 6396 break;
6397 case 8:
6398 case 0:
6399 bright_maxlvl = 7;
0978e012 6400 pr_info("detected a 8-level brightness capable ThinkPad\n");
77775838
HMH		 6401 break;
6402 default:
0978e012 6403 pr_err("Unsupported brightness interface, "
77775838
HMH		 6404 "please contact %s\n", TPACPI_MAIL);
6405 tp_features.bright_unkfw = 1;
6406 bright_maxlvl = b - 1;
6407 }
6408}
6409
a5763f22 6410static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0 6411{
a19a6ee6 6412 struct backlight_properties props;
56b6aeb0 6413 int b;
59fe4fe3 6414 unsigned long quirks;
56b6aeb0 6415
fe08bc4b
HMH		 6416 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6417
f432255e
HMH		 6418 mutex_init(&brightness_mutex);
6419
59fe4fe3
HMH		 6420 quirks = tpacpi_check_quirks(brightness_quirk_table,
6421 ARRAY_SIZE(brightness_quirk_table));
6422
77775838
HMH		 6423 /* tpacpi_detect_brightness_capabilities() must have run already */
6424
6425 /* if it is unknown, we don't handle it: it wouldn't be safe */
6426 if (tp_features.bright_unkfw)
6427 return 1;
2dba1b5d 6428
b5972796 6429 if (!brightness_enable) {
0e501834 6430 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
b5972796
HMH		 6431 "brightness support disabled by "
6432 "module parameter\n");
6433 return 1;
6434 }
6435
217f0963
HMH		 6436 if (acpi_video_backlight_support()) {
6437 if (brightness_enable > 1) {
0978e012
JP		 6438 pr_info("Standard ACPI backlight interface "
6439 "available, not loading native one\n");
217f0963
HMH		 6440 return 1;
6441 } else if (brightness_enable == 1) {
0978e012 6442 pr_warn("Cannot enable backlight brightness support, "
217f0963 6443 "ACPI is already handling it. Refer to the "
0978e012 6444 "acpi_backlight kernel parameter.\n");
217f0963
HMH		 6445 return 1;
6446 }
6447 } else if (tp_features.bright_acpimode && brightness_enable > 1) {
0978e012
JP		 6448 pr_notice("Standard ACPI backlight interface not "
6449 "available, thinkpad_acpi native "
6450 "brightness control enabled\n");
217f0963
HMH		 6451 }
6452
0e501834
HMH		 6453 /*
6454 * Check for module parameter bogosity, note that we
6455 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6456 * able to detect "unspecified"
6457 */
6458 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6459 return -EINVAL;
24d3b774 6460
0e501834
HMH		 6461 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6462 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6463 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 6464 if (quirks & TPACPI_BRGHT_Q_EC)
6465 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6466 else
0e501834 6467 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 6468
0e501834 6469 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 6470 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 6471 brightness_mode);
6472 }
24d3b774 6473
d7880f10 6474 /* Safety */
e28393c0 6475 if (!tpacpi_is_ibm() &&
d7880f10
HMH		 6476 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6477 brightness_mode == TPACPI_BRGHT_MODE_EC))
6478 return -EINVAL;
6479
0e501834 6480 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 6481 return 1;
56b6aeb0 6482
a19a6ee6 6483 memset(&props, 0, sizeof(struct backlight_properties));
bb7ca747 6484 props.type = BACKLIGHT_PLATFORM;
77775838
HMH		 6485 props.max_brightness = bright_maxlvl;
6486 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
a19a6ee6
MG		 6487 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
6488 NULL, NULL,
6489 &ibm_backlight_data,
6490 &props);
56b6aeb0 6491 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 6492 int rc = PTR_ERR(ibm_backlight_device);
6493 ibm_backlight_device = NULL;
0978e012 6494 pr_err("Could not register backlight device\n");
435c47e2 6495 return rc;
56b6aeb0 6496 }
0e501834
HMH		 6497 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6498 "brightness is supported\n");
56b6aeb0 6499
59fe4fe3 6500 if (quirks & TPACPI_BRGHT_Q_ASK) {
0978e012
JP		 6501 pr_notice("brightness: will use unverified default: "
6502 "brightness_mode=%d\n", brightness_mode);
6503 pr_notice("brightness: please report to %s whether it works well "
6504 "or not on your ThinkPad\n", TPACPI_MAIL);
59fe4fe3
HMH		 6505 }
6506
7d9745cf
HMH		 6507 /* Added by mistake in early 2007. Probably useless, but it could
6508 * be working around some unknown firmware problem where the value
6509 * read at startup doesn't match the real hardware state... so leave
6510 * it in place just in case */
56b6aeb0
HMH		 6511 backlight_update_status(ibm_backlight_device);
6512
347a2686
HMH		 6513 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6514 "brightness: registering brightness hotkeys "
6515 "as change notification\n");
6516 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6517 | TP_ACPI_HKEY_BRGHTUP_MASK
3098064d 6518 | TP_ACPI_HKEY_BRGHTDWN_MASK);
56b6aeb0
HMH		 6519 return 0;
6520}
6521
fd3c3a42 6522static void brightness_suspend(void)
0e501834
HMH		 6523{
6524 tpacpi_brightness_checkpoint_nvram();
6525}
6526
6527static void brightness_shutdown(void)
6528{
6529 tpacpi_brightness_checkpoint_nvram();
6530}
6531
56b6aeb0
HMH		 6532static void brightness_exit(void)
6533{
6534 if (ibm_backlight_device) {
0e501834 6535 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 6536 "calling backlight_device_unregister()\n");
56b6aeb0 6537 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 6538 }
0e501834
HMH		 6539
6540 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 6541}
6542
887965e6 6543static int brightness_read(struct seq_file *m)
56b6aeb0 6544{
56b6aeb0
HMH		 6545 int level;
6546
35ff8b9f
HMH		 6547 level = brightness_get(NULL);
6548 if (level < 0) {
887965e6 6549 seq_printf(m, "level:\t\tunreadable\n");
56b6aeb0 6550 } else {
887965e6
AD		 6551 seq_printf(m, "level:\t\t%d\n", level);
6552 seq_printf(m, "commands:\tup, down\n");
77775838
HMH		 6553 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
6554 bright_maxlvl);
56b6aeb0
HMH		 6555 }
6556
887965e6 6557 return 0;
56b6aeb0
HMH		 6558}
6559
8acb0250
HM		 6560static int brightness_write(char *buf)
6561{
6562 int level;
4273af8d 6563 int rc;
1da177e4 6564 char *cmd;
1da177e4 6565
4273af8d
HMH		 6566 level = brightness_get(NULL);
6567 if (level < 0)
6568 return level;
78f81cc4 6569
4273af8d 6570 while ((cmd = next_cmd(&buf))) {
78f81cc4 6571 if (strlencmp(cmd, "up") == 0) {
77775838 6572 if (level < bright_maxlvl)
4273af8d 6573 level++;
78f81cc4 6574 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 6575 if (level > 0)
6576 level--;
6577 } else if (sscanf(cmd, "level %d", &level) == 1 &&
77775838 6578 level >= 0 && level <= bright_maxlvl) {
4273af8d 6579 /* new level set */
78f81cc4
BD		 6580 } else
6581 return -EINVAL;
78f81cc4
BD		 6582 }
6583
0e501834
HMH		 6584 tpacpi_disclose_usertask("procfs brightness",
6585 "set level to %d\n", level);
6586
4273af8d
HMH		 6587 /*
6588 * Now we know what the final level should be, so we try to set it.
6589 * Doing it this way makes the syscall restartable in case of EINTR
6590 */
6591 rc = brightness_set(level);
347a2686
HMH		 6592 if (!rc && ibm_backlight_device)
6593 backlight_force_update(ibm_backlight_device,
6594 BACKLIGHT_UPDATE_SYSFS);
72a979f0 6595 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 6596}
6597
a5763f22
HMH		 6598static struct ibm_struct brightness_driver_data = {
6599 .name = "brightness",
6600 .read = brightness_read,
6601 .write = brightness_write,
6602 .exit = brightness_exit,
0e501834
HMH		 6603 .suspend = brightness_suspend,
6604 .shutdown = brightness_shutdown,
a5763f22
HMH		 6605};
6606
56b6aeb0
HMH		 6607/*************************************************************************
6608 * Volume subdriver
6609 */
fb87a811 6610
329e4e18
HMH		 6611/*
6612 * IBM ThinkPads have a simple volume controller with MUTE gating.
6613 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6614 *
6615 * Since the *61 series (and probably also the later *60 series), Lenovo
6616 * ThinkPads only implement the MUTE gate.
6617 *
6618 * EC register 0x30
6619 * Bit 6: MUTE (1 mutes sound)
6620 * Bit 3-0: Volume
6621 * Other bits should be zero as far as we know.
6622 *
6623 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6624 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6625 * such as bit 7 which is used to detect repeated presses of MUTE,
6626 * and we leave them unchanged.
9a417ec0
AL		 6627 *
6628 * On newer Lenovo ThinkPads, the EC can automatically change the volume
6629 * in response to user input. Unfortunately, this rarely works well.
6630 * The laptop changes the state of its internal MUTE gate and, on some
6631 * models, sends KEY_MUTE, causing any user code that responds to the
6632 * mute button to get confused. The hardware MUTE gate is also
6633 * unnecessary, since user code can handle the mute button without
6634 * kernel or EC help.
6635 *
6636 * To avoid confusing userspace, we simply disable all EC-based mute
6637 * and volume controls when possible.
329e4e18
HMH		 6638 */
6639
ff850c33
HMH		 6640#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6641
0d204c34
HMH		 6642#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6643#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6644#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6645
cab66613
TI		 6646#if SNDRV_CARDS <= 32
6647#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
6648#else
6649#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
6650#endif
6651static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
0d204c34 6652static char *alsa_id = "ThinkPadEC";
90ab5ee9 6653static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
0d204c34
HMH		 6654
6655struct tpacpi_alsa_data {
6656 struct snd_card *card;
6657 struct snd_ctl_elem_id *ctl_mute_id;
6658 struct snd_ctl_elem_id *ctl_vol_id;
6659};
6660
6661static struct snd_card *alsa_card;
6662
329e4e18
HMH		 6663enum {
6664 TP_EC_AUDIO = 0x30,
6665
6666 /* TP_EC_AUDIO bits */
6667 TP_EC_AUDIO_MUTESW = 6,
6668
6669 /* TP_EC_AUDIO bitmasks */
6670 TP_EC_AUDIO_LVL_MSK = 0x0F,
6671 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
6672
6673 /* Maximum volume */
6674 TP_EC_VOLUME_MAX = 14,
6675};
6676
6677enum tpacpi_volume_access_mode {
6678 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
6679 TPACPI_VOL_MODE_EC, /* Pure EC control */
6680 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
6681 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6682 TPACPI_VOL_MODE_MAX
6683};
6684
a112ceee
HMH		 6685enum tpacpi_volume_capabilities {
6686 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
6687 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
6688 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
6689 TPACPI_VOL_CAP_MAX
6690};
6691
9a417ec0
AL		 6692enum tpacpi_mute_btn_mode {
6693 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
6694 /* We don't know what mode 1 is. */
6695 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
6696 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
6697};
6698
329e4e18
HMH		 6699static enum tpacpi_volume_access_mode volume_mode =
6700 TPACPI_VOL_MODE_MAX;
6701
a112ceee 6702static enum tpacpi_volume_capabilities volume_capabilities;
90ab5ee9 6703static bool volume_control_allowed;
9a417ec0
AL		 6704static bool software_mute_requested = true;
6705static bool software_mute_active;
6706static int software_mute_orig_mode;
f74a27d4 6707
329e4e18
HMH		 6708/*
6709 * Used to syncronize writers to TP_EC_AUDIO and
6710 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6711 */
6712static struct mutex volume_mutex;
6713
6714static void tpacpi_volume_checkpoint_nvram(void)
78f81cc4 6715{
329e4e18
HMH		 6716 u8 lec = 0;
6717 u8 b_nvram;
a112ceee 6718 u8 ec_mask;
329e4e18
HMH		 6719
6720 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
6721 return;
c7ac6291
HMH		 6722 if (!volume_control_allowed)
6723 return;
9a417ec0
AL		 6724 if (software_mute_active)
6725 return;
329e4e18
HMH		 6726
6727 vdbg_printk(TPACPI_DBG_MIXER,
6728 "trying to checkpoint mixer state to NVRAM...\n");
78f81cc4 6729
a112ceee
HMH		 6730 if (tp_features.mixer_no_level_control)
6731 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
6732 else
6733 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
6734
329e4e18
HMH		 6735 if (mutex_lock_killable(&volume_mutex) < 0)
6736 return;
6737
6738 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
6739 goto unlock;
6740 lec &= ec_mask;
6741 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
6742
6743 if (lec != (b_nvram & ec_mask)) {
6744 /* NVRAM needs update */
6745 b_nvram &= ~ec_mask;
6746 b_nvram |= lec;
6747 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
6748 dbg_printk(TPACPI_DBG_MIXER,
6749 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6750 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4 6751 } else {
329e4e18
HMH		 6752 vdbg_printk(TPACPI_DBG_MIXER,
6753 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6754 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4
BD		 6755 }
6756
329e4e18
HMH		 6757unlock:
6758 mutex_unlock(&volume_mutex);
78f81cc4
BD		 6759}
6760
329e4e18 6761static int volume_get_status_ec(u8 *status)
78f81cc4 6762{
329e4e18 6763 u8 s;
78f81cc4 6764
329e4e18
HMH		 6765 if (!acpi_ec_read(TP_EC_AUDIO, &s))
6766 return -EIO;
78f81cc4 6767
329e4e18 6768 *status = s;
1da177e4 6769
329e4e18 6770 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
35ff8b9f 6771
329e4e18
HMH		 6772 return 0;
6773}
78f81cc4 6774
329e4e18
HMH		 6775static int volume_get_status(u8 *status)
6776{
6777 return volume_get_status_ec(status);
6778}
78f81cc4 6779
329e4e18
HMH		 6780static int volume_set_status_ec(const u8 status)
6781{
6782 if (!acpi_ec_write(TP_EC_AUDIO, status))
6783 return -EIO;
78f81cc4 6784
329e4e18
HMH		 6785 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
6786
9a417ec0
AL		 6787 /*
6788 * On X200s, and possibly on others, it can take a while for
6789 * reads to become correct.
6790 */
6791 msleep(1);
6792
329e4e18
HMH		 6793 return 0;
6794}
6795
6796static int volume_set_status(const u8 status)
6797{
6798 return volume_set_status_ec(status);
6799}
6800
88cc8377
HMH		 6801/* returns < 0 on error, 0 on no change, 1 on change */
6802static int __volume_set_mute_ec(const bool mute)
329e4e18
HMH		 6803{
6804 int rc;
6805 u8 s, n;
6806
6807 if (mutex_lock_killable(&volume_mutex) < 0)
6808 return -EINTR;
6809
6810 rc = volume_get_status_ec(&s);
6811 if (rc)
6812 goto unlock;
6813
6814 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
6815 s & ~TP_EC_AUDIO_MUTESW_MSK;
6816
88cc8377 6817 if (n != s) {
329e4e18 6818 rc = volume_set_status_ec(n);
88cc8377
HMH		 6819 if (!rc)
6820 rc = 1;
6821 }
329e4e18
HMH		 6822
6823unlock:
6824 mutex_unlock(&volume_mutex);
6825 return rc;
6826}
6827
88cc8377
HMH		 6828static int volume_alsa_set_mute(const bool mute)
6829{
6830 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
6831 (mute) ? "" : "un");
6832 return __volume_set_mute_ec(mute);
6833}
6834
329e4e18
HMH		 6835static int volume_set_mute(const bool mute)
6836{
88cc8377
HMH		 6837 int rc;
6838
329e4e18
HMH		 6839 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
6840 (mute) ? "" : "un");
88cc8377
HMH		 6841
6842 rc = __volume_set_mute_ec(mute);
6843 return (rc < 0) ? rc : 0;
329e4e18
HMH		 6844}
6845
88cc8377
HMH		 6846/* returns < 0 on error, 0 on no change, 1 on change */
6847static int __volume_set_volume_ec(const u8 vol)
329e4e18
HMH		 6848{
6849 int rc;
6850 u8 s, n;
6851
6852 if (vol > TP_EC_VOLUME_MAX)
6853 return -EINVAL;
6854
6855 if (mutex_lock_killable(&volume_mutex) < 0)
6856 return -EINTR;
6857
6858 rc = volume_get_status_ec(&s);
6859 if (rc)
6860 goto unlock;
6861
6862 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
6863
88cc8377 6864 if (n != s) {
329e4e18 6865 rc = volume_set_status_ec(n);
88cc8377
HMH		 6866 if (!rc)
6867 rc = 1;
6868 }
329e4e18
HMH		 6869
6870unlock:
6871 mutex_unlock(&volume_mutex);
6872 return rc;
6873}
6874
9a417ec0
AL		 6875static int volume_set_software_mute(bool startup)
6876{
6877 int result;
6878
6879 if (!tpacpi_is_lenovo())
6880 return -ENODEV;
6881
6882 if (startup) {
6883 if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
6884 "HAUM", "qd"))
6885 return -EIO;
6886
6887 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6888 "Initial HAUM setting was %d\n",
6889 software_mute_orig_mode);
6890 }
6891
6892 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
6893 (int)TP_EC_MUTE_BTN_NONE))
6894 return -EIO;
6895
6896 if (result != TP_EC_MUTE_BTN_NONE)
6897 pr_warn("Unexpected SAUM result %d\n",
6898 result);
6899
6900 /*
6901 * In software mute mode, the standard codec controls take
6902 * precendence, so we unmute the ThinkPad HW switch at
6903 * startup. Just on case there are SAUM-capable ThinkPads
6904 * with level controls, set max HW volume as well.
6905 */
6906 if (tp_features.mixer_no_level_control)
6907 result = volume_set_mute(false);
6908 else
6909 result = volume_set_status(TP_EC_VOLUME_MAX);
6910
6911 if (result != 0)
6912 pr_warn("Failed to unmute the HW mute switch\n");
6913
6914 return 0;
6915}
6916
6917static void volume_exit_software_mute(void)
6918{
6919 int r;
6920
6921 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
6922 || r != software_mute_orig_mode)
6923 pr_warn("Failed to restore mute mode\n");
6924}
6925
88cc8377 6926static int volume_alsa_set_volume(const u8 vol)
329e4e18
HMH		 6927{
6928 dbg_printk(TPACPI_DBG_MIXER,
88cc8377
HMH		 6929 "ALSA: trying to set volume level to %hu\n", vol);
6930 return __volume_set_volume_ec(vol);
329e4e18
HMH		 6931}
6932
0d204c34
HMH		 6933static void volume_alsa_notify_change(void)
6934{
6935 struct tpacpi_alsa_data *d;
6936
6937 if (alsa_card && alsa_card->private_data) {
6938 d = alsa_card->private_data;
6939 if (d->ctl_mute_id)
6940 snd_ctl_notify(alsa_card,
6941 SNDRV_CTL_EVENT_MASK_VALUE,
6942 d->ctl_mute_id);
6943 if (d->ctl_vol_id)
6944 snd_ctl_notify(alsa_card,
6945 SNDRV_CTL_EVENT_MASK_VALUE,
6946 d->ctl_vol_id);
6947 }
6948}
6949
6950static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
6951 struct snd_ctl_elem_info *uinfo)
6952{
6953 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
6954 uinfo->count = 1;
6955 uinfo->value.integer.min = 0;
6956 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
6957 return 0;
6958}
6959
6960static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
6961 struct snd_ctl_elem_value *ucontrol)
6962{
6963 u8 s;
6964 int rc;
6965
6966 rc = volume_get_status(&s);
6967 if (rc < 0)
6968 return rc;
6969
6970 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
6971 return 0;
6972}
6973
6974static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
6975 struct snd_ctl_elem_value *ucontrol)
6976{
38e11cde
HMH		 6977 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
6978 ucontrol->value.integer.value[0]);
88cc8377 6979 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
0d204c34
HMH		 6980}
6981
6982#define volume_alsa_mute_info snd_ctl_boolean_mono_info
6983
6984static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
6985 struct snd_ctl_elem_value *ucontrol)
6986{
6987 u8 s;
6988 int rc;
6989
6990 rc = volume_get_status(&s);
6991 if (rc < 0)
6992 return rc;
6993
6994 ucontrol->value.integer.value[0] =
6995 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
6996 return 0;
6997}
6998
6999static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
7000 struct snd_ctl_elem_value *ucontrol)
7001{
38e11cde
HMH		 7002 tpacpi_disclose_usertask("ALSA", "%smute\n",
7003 ucontrol->value.integer.value[0] ?
7004 "un" : "");
88cc8377 7005 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
0d204c34
HMH		 7006}
7007
c3aa4723 7008static struct snd_kcontrol_new volume_alsa_control_vol __initdata = {
0d204c34
HMH		 7009 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7010 .name = "Console Playback Volume",
7011 .index = 0,
7012 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7013 .info = volume_alsa_vol_info,
7014 .get = volume_alsa_vol_get,
7015};
7016
c3aa4723 7017static struct snd_kcontrol_new volume_alsa_control_mute __initdata = {
0d204c34
HMH		 7018 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
7019 .name = "Console Playback Switch",
7020 .index = 0,
7021 .access = SNDRV_CTL_ELEM_ACCESS_READ,
7022 .info = volume_alsa_mute_info,
7023 .get = volume_alsa_mute_get,
7024};
7025
fd3c3a42 7026static void volume_suspend(void)
329e4e18
HMH		 7027{
7028 tpacpi_volume_checkpoint_nvram();
7029}
7030
0d204c34
HMH		 7031static void volume_resume(void)
7032{
9a417ec0
AL		 7033 if (software_mute_active) {
7034 if (volume_set_software_mute(false) < 0)
7035 pr_warn("Failed to restore software mute\n");
7036 } else {
7037 volume_alsa_notify_change();
7038 }
0d204c34
HMH		 7039}
7040
329e4e18
HMH		 7041static void volume_shutdown(void)
7042{
7043 tpacpi_volume_checkpoint_nvram();
7044}
7045
7046static void volume_exit(void)
7047{
0d204c34
HMH		 7048 if (alsa_card) {
7049 snd_card_free(alsa_card);
7050 alsa_card = NULL;
7051 }
7052
329e4e18 7053 tpacpi_volume_checkpoint_nvram();
9a417ec0
AL		 7054
7055 if (software_mute_active)
7056 volume_exit_software_mute();
329e4e18
HMH		 7057}
7058
0d204c34
HMH		 7059static int __init volume_create_alsa_mixer(void)
7060{
7061 struct snd_card *card;
7062 struct tpacpi_alsa_data *data;
7063 struct snd_kcontrol *ctl_vol;
7064 struct snd_kcontrol *ctl_mute;
7065 int rc;
7066
89235e55
TI		 7067 rc = snd_card_new(&tpacpi_pdev->dev,
7068 alsa_index, alsa_id, THIS_MODULE,
7069 sizeof(struct tpacpi_alsa_data), &card);
74c75c18 7070 if (rc < 0 || !card) {
0978e012 7071 pr_err("Failed to create ALSA card structures: %d\n", rc);
74c75c18
HMH		 7072 return 1;
7073 }
0d204c34
HMH		 7074
7075 BUG_ON(!card->private_data);
7076 data = card->private_data;
7077 data->card = card;
7078
7079 strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
7080 sizeof(card->driver));
7081 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
7082 sizeof(card->shortname));
7083 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
7084 (thinkpad_id.ec_version_str) ?
7085 thinkpad_id.ec_version_str : "(unknown)");
7086 snprintf(card->longname, sizeof(card->longname),
7087 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
7088 (thinkpad_id.ec_version_str) ?
7089 thinkpad_id.ec_version_str : "unknown");
7090
7091 if (volume_control_allowed) {
7092 volume_alsa_control_vol.put = volume_alsa_vol_put;
7093 volume_alsa_control_vol.access =
7094 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7095
7096 volume_alsa_control_mute.put = volume_alsa_mute_put;
7097 volume_alsa_control_mute.access =
7098 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7099 }
7100
7101 if (!tp_features.mixer_no_level_control) {
7102 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
7103 rc = snd_ctl_add(card, ctl_vol);
7104 if (rc < 0) {
0978e012
JP		 7105 pr_err("Failed to create ALSA volume control: %d\n",
7106 rc);
74c75c18 7107 goto err_exit;
78f81cc4 7108 }
0d204c34
HMH		 7109 data->ctl_vol_id = &ctl_vol->id;
7110 }
78f81cc4 7111
0d204c34
HMH		 7112 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
7113 rc = snd_ctl_add(card, ctl_mute);
7114 if (rc < 0) {
0978e012 7115 pr_err("Failed to create ALSA mute control: %d\n", rc);
74c75c18 7116 goto err_exit;
0d204c34
HMH		 7117 }
7118 data->ctl_mute_id = &ctl_mute->id;
35ff8b9f 7119
0d204c34 7120 rc = snd_card_register(card);
0d204c34 7121 if (rc < 0) {
0978e012 7122 pr_err("Failed to register ALSA card: %d\n", rc);
74c75c18 7123 goto err_exit;
0d204c34
HMH		 7124 }
7125
7126 alsa_card = card;
74c75c18
HMH		 7127 return 0;
7128
7129err_exit:
7130 snd_card_free(card);
7131 return 1;
0d204c34
HMH		 7132}
7133
a112ceee
HMH		 7134#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
7135#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
7136
7137static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
7138 /* Whitelist volume level on all IBM by default */
7139 { .vendor = PCI_VENDOR_ID_IBM,
7140 .bios = TPACPI_MATCH_ANY,
7141 .ec = TPACPI_MATCH_ANY,
7142 .quirks = TPACPI_VOL_Q_LEVEL },
7143
7144 /* Lenovo models with volume control (needs confirmation) */
7145 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
7146 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
7147 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
7148 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
7149 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
7150 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
7151 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
7152
7153 /* Whitelist mute-only on all Lenovo by default */
7154 { .vendor = PCI_VENDOR_ID_LENOVO,
7155 .bios = TPACPI_MATCH_ANY,
7156 .ec = TPACPI_MATCH_ANY,
7157 .quirks = TPACPI_VOL_Q_MUTEONLY }
7158};
7159
329e4e18
HMH		 7160static int __init volume_init(struct ibm_init_struct *iibm)
7161{
a112ceee 7162 unsigned long quirks;
0d204c34 7163 int rc;
a112ceee 7164
329e4e18
HMH		 7165 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
7166
7167 mutex_init(&volume_mutex);
7168
7169 /*
7170 * Check for module parameter bogosity, note that we
7171 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
7172 * able to detect "unspecified"
7173 */
7174 if (volume_mode > TPACPI_VOL_MODE_MAX)
7175 return -EINVAL;
7176
7177 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
0978e012
JP		 7178 pr_err("UCMS step volume mode not implemented, "
7179 "please contact %s\n", TPACPI_MAIL);
329e4e18
HMH		 7180 return 1;
7181 }
7182
a112ceee
HMH		 7183 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
7184 return -EINVAL;
7185
0d204c34
HMH		 7186 /*
7187 * The ALSA mixer is our primary interface.
7188 * When disabled, don't install the subdriver at all
7189 */
7190 if (!alsa_enable) {
7191 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7192 "ALSA mixer disabled by parameter, "
7193 "not loading volume subdriver...\n");
7194 return 1;
7195 }
7196
a112ceee
HMH		 7197 quirks = tpacpi_check_quirks(volume_quirk_table,
7198 ARRAY_SIZE(volume_quirk_table));
7199
7200 switch (volume_capabilities) {
7201 case TPACPI_VOL_CAP_AUTO:
7202 if (quirks & TPACPI_VOL_Q_MUTEONLY)
7203 tp_features.mixer_no_level_control = 1;
7204 else if (quirks & TPACPI_VOL_Q_LEVEL)
7205 tp_features.mixer_no_level_control = 0;
7206 else
7207 return 1; /* no mixer */
7208 break;
7209 case TPACPI_VOL_CAP_VOLMUTE:
7210 tp_features.mixer_no_level_control = 0;
7211 break;
7212 case TPACPI_VOL_CAP_MUTEONLY:
7213 tp_features.mixer_no_level_control = 1;
7214 break;
7215 default:
7216 return 1;
7217 }
7218
7219 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
7220 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7221 "using user-supplied volume_capabilities=%d\n",
7222 volume_capabilities);
7223
329e4e18
HMH		 7224 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
7225 volume_mode == TPACPI_VOL_MODE_MAX) {
7226 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
7227
7228 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7229 "driver auto-selected volume_mode=%d\n",
7230 volume_mode);
7231 } else {
7232 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7233 "using user-supplied volume_mode=%d\n",
7234 volume_mode);
7235 }
7236
7237 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 7238 "mute is supported, volume control is %s\n",
7239 str_supported(!tp_features.mixer_no_level_control));
329e4e18 7240
9a417ec0
AL		 7241 if (software_mute_requested && volume_set_software_mute(true) == 0) {
7242 software_mute_active = true;
7243 } else {
7244 rc = volume_create_alsa_mixer();
7245 if (rc) {
7246 pr_err("Could not create the ALSA mixer interface\n");
7247 return rc;
7248 }
0d204c34 7249
9a417ec0
AL		 7250 pr_info("Console audio control enabled, mode: %s\n",
7251 (volume_control_allowed) ?
7252 "override (read/write)" :
7253 "monitor (read only)");
7254 }
c7ac6291 7255
0d204c34
HMH		 7256 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7257 "registering volume hotkeys as change notification\n");
7258 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7259 | TP_ACPI_HKEY_VOLUP_MASK
7260 | TP_ACPI_HKEY_VOLDWN_MASK
7261 | TP_ACPI_HKEY_MUTE_MASK);
7262
329e4e18
HMH		 7263 return 0;
7264}
f74a27d4 7265
887965e6 7266static int volume_read(struct seq_file *m)
78f81cc4 7267{
329e4e18 7268 u8 status;
78f81cc4 7269
329e4e18 7270 if (volume_get_status(&status) < 0) {
887965e6 7271 seq_printf(m, "level:\t\tunreadable\n");
78f81cc4 7272 } else {
a112ceee 7273 if (tp_features.mixer_no_level_control)
887965e6 7274 seq_printf(m, "level:\t\tunsupported\n");
a112ceee 7275 else
887965e6 7276 seq_printf(m, "level:\t\t%d\n",
a112ceee
HMH		 7277 status & TP_EC_AUDIO_LVL_MSK);
7278
887965e6 7279 seq_printf(m, "mute:\t\t%s\n",
329e4e18 7280 onoff(status, TP_EC_AUDIO_MUTESW));
a112ceee 7281
c7ac6291 7282 if (volume_control_allowed) {
887965e6 7283 seq_printf(m, "commands:\tunmute, mute\n");
c7ac6291 7284 if (!tp_features.mixer_no_level_control) {
887965e6 7285 seq_printf(m,
c7ac6291 7286 "commands:\tup, down\n");
887965e6 7287 seq_printf(m,
c7ac6291
HMH		 7288 "commands:\tlevel <level>"
7289 " (<level> is 0-%d)\n",
7290 TP_EC_VOLUME_MAX);
7291 }
78f81cc4
BD		 7292 }
7293 }
7294
7295 return 0;
7296}
7297
78f81cc4
BD		 7298static int volume_write(char *buf)
7299{
329e4e18
HMH		 7300 u8 s;
7301 u8 new_level, new_mute;
7302 int l;
78f81cc4 7303 char *cmd;
329e4e18 7304 int rc;
78f81cc4 7305
c7ac6291
HMH		 7306 /*
7307 * We do allow volume control at driver startup, so that the
7308 * user can set initial state through the volume=... parameter hack.
7309 */
7310 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7311 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7312 tp_warned.volume_ctrl_forbidden = 1;
0978e012
JP		 7313 pr_notice("Console audio control in monitor mode, "
7314 "changes are not allowed\n");
7315 pr_notice("Use the volume_control=1 module parameter "
7316 "to enable volume control\n");
c7ac6291
HMH		 7317 }
7318 return -EPERM;
7319 }
7320
329e4e18
HMH		 7321 rc = volume_get_status(&s);
7322 if (rc < 0)
7323 return rc;
78f81cc4 7324
329e4e18
HMH		 7325 new_level = s & TP_EC_AUDIO_LVL_MSK;
7326 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7327
7328 while ((cmd = next_cmd(&buf))) {
a112ceee
HMH		 7329 if (!tp_features.mixer_no_level_control) {
7330 if (strlencmp(cmd, "up") == 0) {
7331 if (new_mute)
7332 new_mute = 0;
7333 else if (new_level < TP_EC_VOLUME_MAX)
7334 new_level++;
7335 continue;
7336 } else if (strlencmp(cmd, "down") == 0) {
7337 if (new_mute)
7338 new_mute = 0;
7339 else if (new_level > 0)
7340 new_level--;
7341 continue;
7342 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7343 l >= 0 && l <= TP_EC_VOLUME_MAX) {
7344 new_level = l;
7345 continue;
7346 }
7347 }
7348 if (strlencmp(cmd, "mute") == 0)
329e4e18 7349 new_mute = TP_EC_AUDIO_MUTESW_MSK;
a112ceee
HMH		 7350 else if (strlencmp(cmd, "unmute") == 0)
7351 new_mute = 0;
7352 else
1da177e4 7353 return -EINVAL;
329e4e18 7354 }
1da177e4 7355
a112ceee
HMH		 7356 if (tp_features.mixer_no_level_control) {
7357 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7358 new_mute ? "" : "un");
7359 rc = volume_set_mute(!!new_mute);
7360 } else {
7361 tpacpi_disclose_usertask("procfs volume",
7362 "%smute and set level to %d\n",
7363 new_mute ? "" : "un", new_level);
7364 rc = volume_set_status(new_mute | new_level);
7365 }
0d204c34 7366 volume_alsa_notify_change();
78f81cc4 7367
329e4e18 7368 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7369}
7370
a5763f22
HMH		 7371static struct ibm_struct volume_driver_data = {
7372 .name = "volume",
7373 .read = volume_read,
7374 .write = volume_write,
329e4e18
HMH		 7375 .exit = volume_exit,
7376 .suspend = volume_suspend,
0d204c34 7377 .resume = volume_resume,
329e4e18 7378 .shutdown = volume_shutdown,
a5763f22 7379};
56b6aeb0 7380
ff850c33
HMH		 7381#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7382
7383#define alsa_card NULL
7384
7385static void inline volume_alsa_notify_change(void)
7386{
7387}
7388
7389static int __init volume_init(struct ibm_init_struct *iibm)
7390{
0978e012 7391 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
ff850c33
HMH		 7392
7393 return 1;
7394}
7395
7396static struct ibm_struct volume_driver_data = {
7397 .name = "volume",
7398};
7399
7400#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7401
56b6aeb0
HMH		 7402/*************************************************************************
7403 * Fan subdriver
7404 */
7405
7406/*
7407 * FAN ACCESS MODES
7408 *
efa27145 7409 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 7410 * ACPI GFAN method: returns fan level
7411 *
efa27145 7412 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 7413 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 7414 *
efa27145 7415 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7416 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7417 *
f51d1a39
HMH		 7418 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7419 * it for writing.
56b6aeb0 7420 *
efa27145 7421 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 7422 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7423 * Supported on almost all ThinkPads
56b6aeb0
HMH		 7424 *
7425 * Fan speed changes of any sort (including those caused by the
7426 * disengaged mode) are usually done slowly by the firmware as the
9ddc5b6f 7427 * maximum amount of fan duty cycle change per second seems to be
56b6aeb0
HMH		 7428 * limited.
7429 *
7430 * Reading is not available if GFAN exists.
7431 * Writing is not available if SFAN exists.
7432 *
7433 * Bits
7434 * 7 automatic mode engaged;
7435 * (default operation mode of the ThinkPad)
7436 * fan level is ignored in this mode.
f51d1a39 7437 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 7438 * not available on all thinkpads. May disable
f51d1a39
HMH		 7439 * the tachometer while the fan controller ramps up
7440 * the speed (which can take up to a few *minutes*).
7441 * Speeds up fan to 100% duty-cycle, which is far above
7442 * the standard RPM levels. It is not impossible that
7443 * it could cause hardware damage.
56b6aeb0
HMH		 7444 * 5-3 unused in some models. Extra bits for fan level
7445 * in others, but still useless as all values above
7446 * 7 map to the same speed as level 7 in these models.
7447 * 2-0 fan level (0..7 usually)
7448 * 0x00 = stop
7449 * 0x07 = max (set when temperatures critical)
7450 * Some ThinkPads may have other levels, see
efa27145 7451 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 7452 *
7453 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
b595076a 7454 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
56b6aeb0
HMH		 7455 * does so, its initial value is meaningless (0x07).
7456 *
7457 * For firmware bugs, refer to:
7458 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7459 *
7460 * ----
7461 *
7462 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7463 * Main fan tachometer reading (in RPM)
7464 *
7465 * This register is present on all ThinkPads with a new-style EC, and
7466 * it is known not to be present on the A21m/e, and T22, as there is
7467 * something else in offset 0x84 according to the ACPI DSDT. Other
7468 * ThinkPads from this same time period (and earlier) probably lack the
7469 * tachometer as well.
7470 *
877d0310 7471 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 7472 * was never fixed by IBM to report the EC firmware version string
7473 * probably support the tachometer (like the early X models), so
7474 * detecting it is quite hard. We need more data to know for sure.
7475 *
7476 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7477 * might result.
7478 *
f51d1a39
HMH		 7479 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7480 * mode.
56b6aeb0
HMH		 7481 *
7482 * For firmware bugs, refer to:
7483 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7484 *
d7377247
HMH		 7485 * ----
7486 *
7487 * ThinkPad EC register 0x31 bit 0 (only on select models)
7488 *
7489 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7490 * show the speed of the main fan. When bit 0 of EC register 0x31
7491 * is one, the tachometer registers show the speed of the auxiliary
7492 * fan.
7493 *
7494 * Fan control seems to affect both fans, regardless of the state
7495 * of this bit.
7496 *
7497 * So far, only the firmware for the X60/X61 non-tablet versions
7498 * seem to support this (firmware TP-7M).
7499 *
efa27145 7500 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 7501 * ThinkPad X31, X40, X41. Not available in the X60.
7502 *
7503 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7504 * high speed. ACPI DSDT seems to map these three speeds to levels
7505 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7506 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7507 *
7508 * The speeds are stored on handles
7509 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7510 *
af901ca1 7511 * There are three default speed sets, accessible as handles:
56b6aeb0
HMH		 7512 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7513 *
7514 * ACPI DSDT switches which set is in use depending on various
7515 * factors.
7516 *
efa27145 7517 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 7518 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7519 * but the ACPI tables just mention level 7.
7520 */
7521
f74a27d4
HMH		 7522enum { /* Fan control constants */
7523 fan_status_offset = 0x2f, /* EC register 0x2f */
7524 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7525 * 0x84 must be read before 0x85 */
d7377247
HMH		 7526 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
7527 bit 0 selects which fan is active */
f74a27d4
HMH		 7528
7529 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
7530 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
7531
7532 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
7533};
7534
7535enum fan_status_access_mode {
7536 TPACPI_FAN_NONE = 0, /* No fan status or control */
7537 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
7538 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7539};
7540
7541enum fan_control_access_mode {
7542 TPACPI_FAN_WR_NONE = 0, /* No fan control */
7543 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
7544 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
7545 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
7546};
7547
7548enum fan_control_commands {
7549 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
7550 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
7551 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
7552 * and also watchdog cmd */
7553};
7554
90ab5ee9 7555static bool fan_control_allowed;
f74a27d4 7556
69ba91cb
HMH		 7557static enum fan_status_access_mode fan_status_access_mode;
7558static enum fan_control_access_mode fan_control_access_mode;
7559static enum fan_control_commands fan_control_commands;
78f81cc4 7560
778b4d74 7561static u8 fan_control_initial_status;
fe98a52c 7562static u8 fan_control_desired_level;
0081b162 7563static u8 fan_control_resume_level;
f74a27d4
HMH		 7564static int fan_watchdog_maxinterval;
7565
7566static struct mutex fan_mutex;
778b4d74 7567
25c68a33 7568static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 7569static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 7570
e0c7dfe7
HMH		 7571TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
7572TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 7573 "\\FSPD", /* 600e/x, 770e, 770x */
7574 ); /* all others */
e0c7dfe7 7575TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 7576 "JFNS", /* 770x-JL */
7577 ); /* all others */
7578
1c2ece75
HMH		 7579/*
7580 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7581 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7582 * be in auto mode (0x80).
7583 *
7584 * This is corrected by any write to HFSP either by the driver, or
7585 * by the firmware.
7586 *
7587 * We assume 0x07 really means auto mode while this quirk is active,
7588 * as this is far more likely than the ThinkPad being in level 7,
7589 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 7590 *
7591 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7592 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 7593 */
7594
7d95a3d5 7595static void fan_quirk1_setup(void)
1c2ece75 7596{
1c2ece75 7597 if (fan_control_initial_status == 0x07) {
0978e012
JP		 7598 pr_notice("fan_init: initial fan status is unknown, "
7599 "assuming it is in auto mode\n");
7d95a3d5 7600 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 7601 }
7602}
7603
7604static void fan_quirk1_handle(u8 *fan_status)
7605{
7606 if (unlikely(tp_features.fan_ctrl_status_undef)) {
7607 if (*fan_status != fan_control_initial_status) {
7608 /* something changed the HFSP regisnter since
7609 * driver init time, so it is not undefined
7610 * anymore */
7611 tp_features.fan_ctrl_status_undef = 0;
7612 } else {
7613 /* Return most likely status. In fact, it
7614 * might be the only possible status */
7615 *fan_status = TP_EC_FAN_AUTO;
7616 }
7617 }
7618}
7619
d7377247
HMH		 7620/* Select main fan on X60/X61, NOOP on others */
7621static bool fan_select_fan1(void)
7622{
7623 if (tp_features.second_fan) {
7624 u8 val;
7625
7626 if (ec_read(fan_select_offset, &val) < 0)
7627 return false;
7628 val &= 0xFEU;
7629 if (ec_write(fan_select_offset, val) < 0)
7630 return false;
7631 }
7632 return true;
7633}
7634
7635/* Select secondary fan on X60/X61 */
7636static bool fan_select_fan2(void)
7637{
7638 u8 val;
7639
7640 if (!tp_features.second_fan)
7641 return false;
7642
7643 if (ec_read(fan_select_offset, &val) < 0)
7644 return false;
7645 val |= 0x01U;
7646 if (ec_write(fan_select_offset, val) < 0)
7647 return false;
7648
7649 return true;
7650}
7651
fe98a52c 7652/*
b21a15f6 7653 * Call with fan_mutex held
fe98a52c 7654 */
b21a15f6 7655static void fan_update_desired_level(u8 status)
fe98a52c 7656{
b21a15f6
HMH		 7657 if ((status &
7658 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7659 if (status > 7)
7660 fan_control_desired_level = 7;
7661 else
7662 fan_control_desired_level = status;
7663 }
7664}
fe98a52c 7665
b21a15f6
HMH		 7666static int fan_get_status(u8 *status)
7667{
7668 u8 s;
fe98a52c 7669
b21a15f6
HMH		 7670 /* TODO:
7671 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 7672
b21a15f6 7673 switch (fan_status_access_mode) {
eceeb437 7674 case TPACPI_FAN_RD_ACPI_GFAN: {
b21a15f6 7675 /* 570, 600e/x, 770e, 770x */
eceeb437 7676 int res;
fe98a52c 7677
eceeb437 7678 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
b21a15f6 7679 return -EIO;
fe98a52c 7680
b21a15f6 7681 if (likely(status))
eceeb437 7682 *status = res & 0x07;
fe98a52c 7683
b21a15f6 7684 break;
eceeb437 7685 }
b21a15f6
HMH		 7686 case TPACPI_FAN_RD_TPEC:
7687 /* all except 570, 600e/x, 770e, 770x */
7688 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
7689 return -EIO;
7690
1c2ece75 7691 if (likely(status)) {
b21a15f6 7692 *status = s;
1c2ece75
HMH		 7693 fan_quirk1_handle(status);
7694 }
fe98a52c 7695
fe98a52c 7696 break;
b21a15f6 7697
fe98a52c 7698 default:
b21a15f6 7699 return -ENXIO;
fe98a52c
HMH		 7700 }
7701
b21a15f6
HMH		 7702 return 0;
7703}
fe98a52c 7704
b21a15f6
HMH		 7705static int fan_get_status_safe(u8 *status)
7706{
7707 int rc;
7708 u8 s;
fe98a52c 7709
7646ea88 7710 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 7711 return -ERESTARTSYS;
7712 rc = fan_get_status(&s);
7713 if (!rc)
7714 fan_update_desired_level(s);
7715 mutex_unlock(&fan_mutex);
fe98a52c 7716
b21a15f6
HMH		 7717 if (status)
7718 *status = s;
fe98a52c 7719
b21a15f6
HMH		 7720 return rc;
7721}
7722
7723static int fan_get_speed(unsigned int *speed)
fe98a52c 7724{
b21a15f6 7725 u8 hi, lo;
fe98a52c 7726
b21a15f6
HMH		 7727 switch (fan_status_access_mode) {
7728 case TPACPI_FAN_RD_TPEC:
7729 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 7730 if (unlikely(!fan_select_fan1()))
7731 return -EIO;
b21a15f6
HMH		 7732 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
7733 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
7734 return -EIO;
fe98a52c 7735
b21a15f6
HMH		 7736 if (likely(speed))
7737 *speed = (hi << 8) | lo;
fe98a52c 7738
b21a15f6 7739 break;
fe98a52c 7740
b21a15f6
HMH		 7741 default:
7742 return -ENXIO;
7743 }
fe98a52c 7744
b21a15f6 7745 return 0;
fe98a52c
HMH		 7746}
7747
d7377247
HMH		 7748static int fan2_get_speed(unsigned int *speed)
7749{
7750 u8 hi, lo;
7751 bool rc;
7752
7753 switch (fan_status_access_mode) {
7754 case TPACPI_FAN_RD_TPEC:
7755 /* all except 570, 600e/x, 770e, 770x */
7756 if (unlikely(!fan_select_fan2()))
7757 return -EIO;
7758 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
7759 !acpi_ec_read(fan_rpm_offset + 1, &hi);
7760 fan_select_fan1(); /* play it safe */
7761 if (rc)
7762 return -EIO;
7763
7764 if (likely(speed))
7765 *speed = (hi << 8) | lo;
7766
7767 break;
7768
7769 default:
7770 return -ENXIO;
7771 }
7772
7773 return 0;
7774}
7775
b21a15f6 7776static int fan_set_level(int level)
fe98a52c 7777{
b21a15f6
HMH		 7778 if (!fan_control_allowed)
7779 return -EPERM;
fe98a52c 7780
b21a15f6
HMH		 7781 switch (fan_control_access_mode) {
7782 case TPACPI_FAN_WR_ACPI_SFAN:
7783 if (level >= 0 && level <= 7) {
7784 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
7785 return -EIO;
7786 } else
7787 return -EINVAL;
7788 break;
fe98a52c 7789
b21a15f6
HMH		 7790 case TPACPI_FAN_WR_ACPI_FANS:
7791 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 7792 if (!(level & TP_EC_FAN_AUTO) &&
7793 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 7794 ((level < 0) || (level > 7)))
7795 return -EINVAL;
fe98a52c 7796
b21a15f6
HMH		 7797 /* safety net should the EC not support AUTO
7798 * or FULLSPEED mode bits and just ignore them */
7799 if (level & TP_EC_FAN_FULLSPEED)
7800 level |= 7; /* safety min speed 7 */
547266e4 7801 else if (level & TP_EC_FAN_AUTO)
b21a15f6 7802 level |= 4; /* safety min speed 4 */
fe98a52c 7803
b21a15f6
HMH		 7804 if (!acpi_ec_write(fan_status_offset, level))
7805 return -EIO;
7806 else
7807 tp_features.fan_ctrl_status_undef = 0;
7808 break;
fe98a52c 7809
b21a15f6
HMH		 7810 default:
7811 return -ENXIO;
7812 }
74a60c0f
HMH		 7813
7814 vdbg_printk(TPACPI_DBG_FAN,
7815 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 7816 return 0;
fe98a52c
HMH		 7817}
7818
b21a15f6 7819static int fan_set_level_safe(int level)
fe98a52c 7820{
b21a15f6 7821 int rc;
fe98a52c 7822
b21a15f6
HMH		 7823 if (!fan_control_allowed)
7824 return -EPERM;
fe98a52c 7825
7646ea88 7826 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7827 return -ERESTARTSYS;
fe98a52c 7828
b21a15f6
HMH		 7829 if (level == TPACPI_FAN_LAST_LEVEL)
7830 level = fan_control_desired_level;
fe98a52c 7831
b21a15f6
HMH		 7832 rc = fan_set_level(level);
7833 if (!rc)
7834 fan_update_desired_level(level);
7835
7836 mutex_unlock(&fan_mutex);
7837 return rc;
fe98a52c
HMH		 7838}
7839
b21a15f6 7840static int fan_set_enable(void)
fe98a52c 7841{
b21a15f6
HMH		 7842 u8 s;
7843 int rc;
fe98a52c 7844
ecf2a80a
HMH		 7845 if (!fan_control_allowed)
7846 return -EPERM;
7847
7646ea88 7848 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7849 return -ERESTARTSYS;
fe98a52c 7850
b21a15f6
HMH		 7851 switch (fan_control_access_mode) {
7852 case TPACPI_FAN_WR_ACPI_FANS:
7853 case TPACPI_FAN_WR_TPEC:
7854 rc = fan_get_status(&s);
7855 if (rc < 0)
7856 break;
fe98a52c 7857
b21a15f6
HMH		 7858 /* Don't go out of emergency fan mode */
7859 if (s != 7) {
7860 s &= 0x07;
7861 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
7862 }
fe98a52c 7863
b21a15f6
HMH		 7864 if (!acpi_ec_write(fan_status_offset, s))
7865 rc = -EIO;
7866 else {
7867 tp_features.fan_ctrl_status_undef = 0;
7868 rc = 0;
7869 }
7870 break;
fe98a52c 7871
b21a15f6
HMH		 7872 case TPACPI_FAN_WR_ACPI_SFAN:
7873 rc = fan_get_status(&s);
7874 if (rc < 0)
7875 break;
fe98a52c 7876
b21a15f6 7877 s &= 0x07;
fe98a52c 7878
b21a15f6
HMH		 7879 /* Set fan to at least level 4 */
7880 s |= 4;
fe08bc4b 7881
b21a15f6 7882 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 7883 rc = -EIO;
b21a15f6
HMH		 7884 else
7885 rc = 0;
7886 break;
78f81cc4 7887
b21a15f6
HMH		 7888 default:
7889 rc = -ENXIO;
7890 }
5fba344c 7891
b21a15f6 7892 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 7893
7894 if (!rc)
7895 vdbg_printk(TPACPI_DBG_FAN,
7896 "fan control: set fan control register to 0x%02x\n",
7897 s);
b21a15f6 7898 return rc;
69ba91cb 7899}
78f81cc4 7900
b21a15f6 7901static int fan_set_disable(void)
78f81cc4 7902{
b21a15f6 7903 int rc;
c52f0aa5 7904
b21a15f6
HMH		 7905 if (!fan_control_allowed)
7906 return -EPERM;
78f81cc4 7907
7646ea88 7908 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7909 return -ERESTARTSYS;
3ef8a609 7910
b21a15f6
HMH		 7911 rc = 0;
7912 switch (fan_control_access_mode) {
7913 case TPACPI_FAN_WR_ACPI_FANS:
7914 case TPACPI_FAN_WR_TPEC:
7915 if (!acpi_ec_write(fan_status_offset, 0x00))
7916 rc = -EIO;
7917 else {
7918 fan_control_desired_level = 0;
7919 tp_features.fan_ctrl_status_undef = 0;
7920 }
3ef8a609
HMH		 7921 break;
7922
b21a15f6
HMH		 7923 case TPACPI_FAN_WR_ACPI_SFAN:
7924 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
7925 rc = -EIO;
7926 else
7927 fan_control_desired_level = 0;
c52f0aa5
HMH		 7928 break;
7929
7930 default:
b21a15f6 7931 rc = -ENXIO;
78f81cc4
BD		 7932 }
7933
74a60c0f
HMH		 7934 if (!rc)
7935 vdbg_printk(TPACPI_DBG_FAN,
7936 "fan control: set fan control register to 0\n");
fe98a52c 7937
fe98a52c 7938 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 7939 return rc;
7940}
7941
b21a15f6 7942static int fan_set_speed(int speed)
c52f0aa5 7943{
b21a15f6 7944 int rc;
c52f0aa5 7945
b21a15f6
HMH		 7946 if (!fan_control_allowed)
7947 return -EPERM;
3ef8a609 7948
7646ea88 7949 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7950 return -ERESTARTSYS;
c52f0aa5 7951
b21a15f6
HMH		 7952 rc = 0;
7953 switch (fan_control_access_mode) {
7954 case TPACPI_FAN_WR_ACPI_FANS:
7955 if (speed >= 0 && speed <= 65535) {
7956 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
7957 speed, speed, speed))
7958 rc = -EIO;
7959 } else
7960 rc = -EINVAL;
c52f0aa5
HMH		 7961 break;
7962
7963 default:
b21a15f6 7964 rc = -ENXIO;
c52f0aa5
HMH		 7965 }
7966
b21a15f6
HMH		 7967 mutex_unlock(&fan_mutex);
7968 return rc;
16663a87
HMH		 7969}
7970
7971static void fan_watchdog_reset(void)
7972{
4985cd0a
HMH		 7973 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
7974 return;
7975
8fef502e 7976 if (fan_watchdog_maxinterval > 0 &&
41f63c53
TH		 7977 tpacpi_lifecycle != TPACPI_LIFE_EXITING)
7978 mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
7979 msecs_to_jiffies(fan_watchdog_maxinterval * 1000));
7980 else
7981 cancel_delayed_work(&fan_watchdog_task);
16663a87
HMH		 7982}
7983
b21a15f6 7984static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 7985{
b21a15f6 7986 int rc;
18ad7996 7987
b21a15f6
HMH		 7988 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
7989 return;
a12095c2 7990
0978e012 7991 pr_notice("fan watchdog: enabling fan\n");
b21a15f6
HMH		 7992 rc = fan_set_enable();
7993 if (rc < 0) {
0978e012
JP		 7994 pr_err("fan watchdog: error %d while enabling fan, "
7995 "will try again later...\n", -rc);
b21a15f6
HMH		 7996 /* reschedule for later */
7997 fan_watchdog_reset();
7998 }
7999}
eaa7571b 8000
b21a15f6
HMH		 8001/*
8002 * SYSFS fan layout: hwmon compatible (device)
8003 *
8004 * pwm*_enable:
8005 * 0: "disengaged" mode
8006 * 1: manual mode
8007 * 2: native EC "auto" mode (recommended, hardware default)
8008 *
8009 * pwm*: set speed in manual mode, ignored otherwise.
8010 * 0 is level 0; 255 is level 7. Intermediate points done with linear
8011 * interpolation.
8012 *
8013 * fan*_input: tachometer reading, RPM
8014 *
8015 *
8016 * SYSFS fan layout: extensions
8017 *
8018 * fan_watchdog (driver):
8019 * fan watchdog interval in seconds, 0 disables (default), max 120
8020 */
8021
8022/* sysfs fan pwm1_enable ----------------------------------------------- */
8023static ssize_t fan_pwm1_enable_show(struct device *dev,
8024 struct device_attribute *attr,
8025 char *buf)
8026{
8027 int res, mode;
8028 u8 status;
8029
8030 res = fan_get_status_safe(&status);
8031 if (res)
8032 return res;
8033
b21a15f6
HMH		 8034 if (status & TP_EC_FAN_FULLSPEED) {
8035 mode = 0;
8036 } else if (status & TP_EC_FAN_AUTO) {
8037 mode = 2;
8038 } else
8039 mode = 1;
8040
8041 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
8042}
a12095c2 8043
b21a15f6
HMH		 8044static ssize_t fan_pwm1_enable_store(struct device *dev,
8045 struct device_attribute *attr,
8046 const char *buf, size_t count)
8047{
8048 unsigned long t;
8049 int res, level;
8050
8051 if (parse_strtoul(buf, 2, &t))
8052 return -EINVAL;
8053
74a60c0f
HMH		 8054 tpacpi_disclose_usertask("hwmon pwm1_enable",
8055 "set fan mode to %lu\n", t);
8056
b21a15f6
HMH		 8057 switch (t) {
8058 case 0:
8059 level = TP_EC_FAN_FULLSPEED;
8060 break;
8061 case 1:
8062 level = TPACPI_FAN_LAST_LEVEL;
8063 break;
8064 case 2:
8065 level = TP_EC_FAN_AUTO;
8066 break;
8067 case 3:
8068 /* reserved for software-controlled auto mode */
8069 return -ENOSYS;
18ad7996 8070 default:
b21a15f6 8071 return -EINVAL;
18ad7996 8072 }
b21a15f6
HMH		 8073
8074 res = fan_set_level_safe(level);
8075 if (res == -ENXIO)
8076 return -EINVAL;
8077 else if (res < 0)
8078 return res;
8079
8080 fan_watchdog_reset();
8081
8082 return count;
18ad7996
HMH		 8083}
8084
b21a15f6
HMH		 8085static struct device_attribute dev_attr_fan_pwm1_enable =
8086 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
8087 fan_pwm1_enable_show, fan_pwm1_enable_store);
8088
8089/* sysfs fan pwm1 ------------------------------------------------------ */
8090static ssize_t fan_pwm1_show(struct device *dev,
8091 struct device_attribute *attr,
8092 char *buf)
fe98a52c 8093{
b21a15f6
HMH		 8094 int res;
8095 u8 status;
fe98a52c 8096
b21a15f6
HMH		 8097 res = fan_get_status_safe(&status);
8098 if (res)
8099 return res;
ecf2a80a 8100
b21a15f6
HMH		 8101 if ((status &
8102 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
8103 status = fan_control_desired_level;
fe98a52c 8104
b21a15f6
HMH		 8105 if (status > 7)
8106 status = 7;
fe98a52c 8107
b21a15f6 8108 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 8109}
8110
b21a15f6
HMH		 8111static ssize_t fan_pwm1_store(struct device *dev,
8112 struct device_attribute *attr,
8113 const char *buf, size_t count)
18ad7996 8114{
b21a15f6 8115 unsigned long s;
1c6a334e 8116 int rc;
b21a15f6 8117 u8 status, newlevel;
1c6a334e 8118
b21a15f6
HMH		 8119 if (parse_strtoul(buf, 255, &s))
8120 return -EINVAL;
8121
74a60c0f
HMH		 8122 tpacpi_disclose_usertask("hwmon pwm1",
8123 "set fan speed to %lu\n", s);
8124
b21a15f6
HMH		 8125 /* scale down from 0-255 to 0-7 */
8126 newlevel = (s >> 5) & 0x07;
ecf2a80a 8127
7646ea88 8128 if (mutex_lock_killable(&fan_mutex))
fc589a3c 8129 return -ERESTARTSYS;
40ca9fdf 8130
b21a15f6
HMH		 8131 rc = fan_get_status(&status);
8132 if (!rc && (status &
8133 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8134 rc = fan_set_level(newlevel);
8135 if (rc == -ENXIO)
8136 rc = -EINVAL;
8137 else if (!rc) {
8138 fan_update_desired_level(newlevel);
8139 fan_watchdog_reset();
eaa7571b 8140 }
b21a15f6 8141 }
1c6a334e 8142
b21a15f6 8143 mutex_unlock(&fan_mutex);
72a979f0 8144 return (rc) ? rc : count;
b21a15f6 8145}
1c6a334e 8146
b21a15f6
HMH		 8147static struct device_attribute dev_attr_fan_pwm1 =
8148 __ATTR(pwm1, S_IWUSR | S_IRUGO,
8149 fan_pwm1_show, fan_pwm1_store);
1c6a334e 8150
b21a15f6
HMH		 8151/* sysfs fan fan1_input ------------------------------------------------ */
8152static ssize_t fan_fan1_input_show(struct device *dev,
8153 struct device_attribute *attr,
8154 char *buf)
8155{
8156 int res;
8157 unsigned int speed;
1c6a334e 8158
b21a15f6
HMH		 8159 res = fan_get_speed(&speed);
8160 if (res < 0)
8161 return res;
1c6a334e 8162
b21a15f6
HMH		 8163 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
8164}
18ad7996 8165
b21a15f6
HMH		 8166static struct device_attribute dev_attr_fan_fan1_input =
8167 __ATTR(fan1_input, S_IRUGO,
8168 fan_fan1_input_show, NULL);
40ca9fdf 8169
d7377247
HMH		 8170/* sysfs fan fan2_input ------------------------------------------------ */
8171static ssize_t fan_fan2_input_show(struct device *dev,
8172 struct device_attribute *attr,
8173 char *buf)
8174{
8175 int res;
8176 unsigned int speed;
8177
8178 res = fan2_get_speed(&speed);
8179 if (res < 0)
8180 return res;
8181
8182 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
8183}
8184
8185static struct device_attribute dev_attr_fan_fan2_input =
8186 __ATTR(fan2_input, S_IRUGO,
8187 fan_fan2_input_show, NULL);
8188
b21a15f6
HMH		 8189/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
8190static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
8191 char *buf)
8192{
8193 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 8194}
8195
b21a15f6
HMH		 8196static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
8197 const char *buf, size_t count)
18ad7996 8198{
b21a15f6
HMH		 8199 unsigned long t;
8200
8201 if (parse_strtoul(buf, 120, &t))
8202 return -EINVAL;
40ca9fdf 8203
ecf2a80a
HMH		 8204 if (!fan_control_allowed)
8205 return -EPERM;
8206
b21a15f6
HMH		 8207 fan_watchdog_maxinterval = t;
8208 fan_watchdog_reset();
40ca9fdf 8209
74a60c0f
HMH		 8210 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
8211
b21a15f6
HMH		 8212 return count;
8213}
8214
8215static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
8216 fan_fan_watchdog_show, fan_fan_watchdog_store);
8217
8218/* --------------------------------------------------------------------- */
8219static struct attribute *fan_attributes[] = {
8220 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
8221 &dev_attr_fan_fan1_input.attr,
d7377247 8222 NULL, /* for fan2_input */
b21a15f6
HMH		 8223 NULL
8224};
8225
8226static const struct attribute_group fan_attr_group = {
8227 .attrs = fan_attributes,
8228};
8229
d7377247
HMH		 8230#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
8231#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 8232
8233#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
8234 { .vendor = PCI_VENDOR_ID_IBM, \
8235 .bios = TPACPI_MATCH_ANY, \
8236 .ec = TPID(__id1, __id2), \
8237 .quirks = __quirks }
8238
d7377247
HMH		 8239#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
8240 { .vendor = PCI_VENDOR_ID_LENOVO, \
8241 .bios = TPACPI_MATCH_ANY, \
8242 .ec = TPID(__id1, __id2), \
8243 .quirks = __quirks }
8244
7d95a3d5
HMH		 8245static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
8246 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
8247 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
8248 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
8249 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 8250 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 8251};
8252
d7377247 8253#undef TPACPI_FAN_QL
7d95a3d5
HMH		 8254#undef TPACPI_FAN_QI
8255
b21a15f6
HMH		 8256static int __init fan_init(struct ibm_init_struct *iibm)
8257{
8258 int rc;
7d95a3d5 8259 unsigned long quirks;
b21a15f6 8260
74a60c0f
HMH		 8261 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8262 "initializing fan subdriver\n");
b21a15f6
HMH		 8263
8264 mutex_init(&fan_mutex);
8265 fan_status_access_mode = TPACPI_FAN_NONE;
8266 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8267 fan_control_commands = 0;
8268 fan_watchdog_maxinterval = 0;
8269 tp_features.fan_ctrl_status_undef = 0;
d7377247 8270 tp_features.second_fan = 0;
b21a15f6
HMH		 8271 fan_control_desired_level = 7;
8272
e28393c0
HMH		 8273 if (tpacpi_is_ibm()) {
8274 TPACPI_ACPIHANDLE_INIT(fans);
8275 TPACPI_ACPIHANDLE_INIT(gfan);
8276 TPACPI_ACPIHANDLE_INIT(sfan);
8277 }
b21a15f6 8278
7d95a3d5
HMH		 8279 quirks = tpacpi_check_quirks(fan_quirk_table,
8280 ARRAY_SIZE(fan_quirk_table));
8281
b21a15f6
HMH		 8282 if (gfan_handle) {
8283 /* 570, 600e/x, 770e, 770x */
8284 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
8285 } else {
8286 /* all other ThinkPads: note that even old-style
8287 * ThinkPad ECs supports the fan control register */
8288 if (likely(acpi_ec_read(fan_status_offset,
8289 &fan_control_initial_status))) {
8290 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 8291 if (quirks & TPACPI_FAN_Q1)
8292 fan_quirk1_setup();
d7377247
HMH		 8293 if (quirks & TPACPI_FAN_2FAN) {
8294 tp_features.second_fan = 1;
8295 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8296 "secondary fan support enabled\n");
8297 }
b21a15f6 8298 } else {
0978e012 8299 pr_err("ThinkPad ACPI EC access misbehaving, "
b21a15f6
HMH		 8300 "fan status and control unavailable\n");
8301 return 1;
8302 }
8303 }
8304
8305 if (sfan_handle) {
8306 /* 570, 770x-JL */
8307 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8308 fan_control_commands |=
8309 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8310 } else {
8311 if (!gfan_handle) {
8312 /* gfan without sfan means no fan control */
8313 /* all other models implement TP EC 0x2f control */
8314
8315 if (fans_handle) {
8316 /* X31, X40, X41 */
8317 fan_control_access_mode =
8318 TPACPI_FAN_WR_ACPI_FANS;
8319 fan_control_commands |=
8320 TPACPI_FAN_CMD_SPEED |
8321 TPACPI_FAN_CMD_LEVEL |
8322 TPACPI_FAN_CMD_ENABLE;
8323 } else {
8324 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8325 fan_control_commands |=
8326 TPACPI_FAN_CMD_LEVEL |
8327 TPACPI_FAN_CMD_ENABLE;
8328 }
fe98a52c 8329 }
b21a15f6 8330 }
18ad7996 8331
74a60c0f
HMH		 8332 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8333 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 8334 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8335 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8336 fan_status_access_mode, fan_control_access_mode);
1c6a334e 8337
b21a15f6
HMH		 8338 /* fan control master switch */
8339 if (!fan_control_allowed) {
8340 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8341 fan_control_commands = 0;
74a60c0f 8342 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 8343 "fan control features disabled by parameter\n");
18ad7996 8344 }
40ca9fdf 8345
b21a15f6
HMH		 8346 /* update fan_control_desired_level */
8347 if (fan_status_access_mode != TPACPI_FAN_NONE)
8348 fan_get_status_safe(NULL);
fe98a52c 8349
b21a15f6
HMH		 8350 if (fan_status_access_mode != TPACPI_FAN_NONE ||
8351 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 8352 if (tp_features.second_fan) {
8353 /* attach second fan tachometer */
8354 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
8355 &dev_attr_fan_fan2_input.attr;
8356 }
b21a15f6
HMH		 8357 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
8358 &fan_attr_group);
b21a15f6
HMH		 8359 if (rc < 0)
8360 return rc;
9c0a76e1
HMH		 8361
8362 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
8363 &driver_attr_fan_watchdog);
8364 if (rc < 0) {
8365 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
8366 &fan_attr_group);
8367 return rc;
8368 }
b21a15f6
HMH		 8369 return 0;
8370 } else
8371 return 1;
56b6aeb0
HMH		 8372}
8373
b21a15f6 8374static void fan_exit(void)
56b6aeb0 8375{
74a60c0f 8376 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 8377 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 8378
b21a15f6
HMH		 8379 /* FIXME: can we really do this unconditionally? */
8380 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 8381 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
8382 &driver_attr_fan_watchdog);
40ca9fdf 8383
b21a15f6 8384 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 8385 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 8386}
8387
fd3c3a42 8388static void fan_suspend(void)
75700e53 8389{
0081b162
HMH		 8390 int rc;
8391
75700e53
HMH		 8392 if (!fan_control_allowed)
8393 return;
8394
8395 /* Store fan status in cache */
0081b162
HMH		 8396 fan_control_resume_level = 0;
8397 rc = fan_get_status_safe(&fan_control_resume_level);
8398 if (rc < 0)
0978e012
JP		 8399 pr_notice("failed to read fan level for later "
8400 "restore during resume: %d\n", rc);
0081b162
HMH		 8401
8402 /* if it is undefined, don't attempt to restore it.
8403 * KEEP THIS LAST */
75700e53 8404 if (tp_features.fan_ctrl_status_undef)
0081b162 8405 fan_control_resume_level = 0;
75700e53
HMH		 8406}
8407
8408static void fan_resume(void)
8409{
75700e53
HMH		 8410 u8 current_level = 7;
8411 bool do_set = false;
0081b162 8412 int rc;
75700e53
HMH		 8413
8414 /* DSDT *always* updates status on resume */
8415 tp_features.fan_ctrl_status_undef = 0;
8416
75700e53 8417 if (!fan_control_allowed ||
0081b162 8418 !fan_control_resume_level ||
75700e53
HMH		 8419 (fan_get_status_safe(&current_level) < 0))
8420 return;
8421
8422 switch (fan_control_access_mode) {
8423 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 8424 /* never decrease fan level */
8425 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 8426 break;
8427 case TPACPI_FAN_WR_ACPI_FANS:
8428 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8429 /* never decrease fan level, scale is:
8430 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8431 *
8432 * We expect the firmware to set either 7 or AUTO, but we
8433 * handle FULLSPEED out of paranoia.
8434 *
8435 * So, we can safely only restore FULLSPEED or 7, anything
8436 * else could slow the fan. Restoring AUTO is useless, at
8437 * best that's exactly what the DSDT already set (it is the
8438 * slower it uses).
8439 *
8440 * Always keep in mind that the DSDT *will* have set the
8441 * fans to what the vendor supposes is the best level. We
8442 * muck with it only to speed the fan up.
8443 */
8444 if (fan_control_resume_level != 7 &&
8445 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
8446 return;
8447 else
8448 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
8449 (current_level != fan_control_resume_level);
75700e53
HMH		 8450 break;
8451 default:
8452 return;
8453 }
8454 if (do_set) {
0978e012
JP		 8455 pr_notice("restoring fan level to 0x%02x\n",
8456 fan_control_resume_level);
0081b162
HMH		 8457 rc = fan_set_level_safe(fan_control_resume_level);
8458 if (rc < 0)
0978e012 8459 pr_notice("failed to restore fan level: %d\n", rc);
75700e53
HMH		 8460 }
8461}
8462
887965e6 8463static int fan_read(struct seq_file *m)
56b6aeb0 8464{
56b6aeb0
HMH		 8465 int rc;
8466 u8 status;
8467 unsigned int speed = 0;
8468
8469 switch (fan_status_access_mode) {
efa27145 8470 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 8471 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8472 rc = fan_get_status_safe(&status);
8473 if (rc < 0)
56b6aeb0
HMH		 8474 return rc;
8475
887965e6 8476 seq_printf(m, "status:\t\t%s\n"
56b6aeb0
HMH		 8477 "level:\t\t%d\n",
8478 (status != 0) ? "enabled" : "disabled", status);
8479 break;
8480
efa27145 8481 case TPACPI_FAN_RD_TPEC:
56b6aeb0 8482 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8483 rc = fan_get_status_safe(&status);
8484 if (rc < 0)
56b6aeb0
HMH		 8485 return rc;
8486
887965e6 8487 seq_printf(m, "status:\t\t%s\n",
56b6aeb0
HMH		 8488 (status != 0) ? "enabled" : "disabled");
8489
35ff8b9f
HMH		 8490 rc = fan_get_speed(&speed);
8491 if (rc < 0)
56b6aeb0
HMH		 8492 return rc;
8493
887965e6 8494 seq_printf(m, "speed:\t\t%d\n", speed);
56b6aeb0 8495
efa27145 8496 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0 8497 /* Disengaged mode takes precedence */
887965e6 8498 seq_printf(m, "level:\t\tdisengaged\n");
efa27145 8499 else if (status & TP_EC_FAN_AUTO)
887965e6 8500 seq_printf(m, "level:\t\tauto\n");
56b6aeb0 8501 else
887965e6 8502 seq_printf(m, "level:\t\t%d\n", status);
56b6aeb0
HMH		 8503 break;
8504
efa27145 8505 case TPACPI_FAN_NONE:
56b6aeb0 8506 default:
887965e6 8507 seq_printf(m, "status:\t\tnot supported\n");
56b6aeb0
HMH		 8508 }
8509
efa27145 8510 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
887965e6 8511 seq_printf(m, "commands:\tlevel <level>");
56b6aeb0
HMH		 8512
8513 switch (fan_control_access_mode) {
efa27145 8514 case TPACPI_FAN_WR_ACPI_SFAN:
887965e6 8515 seq_printf(m, " (<level> is 0-7)\n");
56b6aeb0
HMH		 8516 break;
8517
8518 default:
887965e6 8519 seq_printf(m, " (<level> is 0-7, "
fe98a52c 8520 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 8521 break;
8522 }
8523 }
18ad7996 8524
efa27145 8525 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
887965e6 8526 seq_printf(m, "commands:\tenable, disable\n"
35ff8b9f
HMH		 8527 "commands:\twatchdog <timeout> (<timeout> "
8528 "is 0 (off), 1-120 (seconds))\n");
1da177e4 8529
efa27145 8530 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
887965e6 8531 seq_printf(m, "commands:\tspeed <speed>"
56b6aeb0
HMH		 8532 " (<speed> is 0-65535)\n");
8533
887965e6 8534 return 0;
78f81cc4
BD		 8535}
8536
18ad7996
HMH		 8537static int fan_write_cmd_level(const char *cmd, int *rc)
8538{
8539 int level;
8540
a12095c2 8541 if (strlencmp(cmd, "level auto") == 0)
efa27145 8542 level = TP_EC_FAN_AUTO;
fe98a52c 8543 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 8544 (strlencmp(cmd, "level full-speed") == 0))
efa27145 8545 level = TP_EC_FAN_FULLSPEED;
a12095c2 8546 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 8547 return 0;
8548
35ff8b9f
HMH		 8549 *rc = fan_set_level_safe(level);
8550 if (*rc == -ENXIO)
0978e012
JP		 8551 pr_err("level command accepted for unsupported access mode %d\n",
8552 fan_control_access_mode);
74a60c0f
HMH		 8553 else if (!*rc)
8554 tpacpi_disclose_usertask("procfs fan",
8555 "set level to %d\n", level);
18ad7996
HMH		 8556
8557 return 1;
8558}
8559
8560static int fan_write_cmd_enable(const char *cmd, int *rc)
8561{
8562 if (strlencmp(cmd, "enable") != 0)
8563 return 0;
8564
35ff8b9f
HMH		 8565 *rc = fan_set_enable();
8566 if (*rc == -ENXIO)
0978e012
JP		 8567 pr_err("enable command accepted for unsupported access mode %d\n",
8568 fan_control_access_mode);
74a60c0f
HMH		 8569 else if (!*rc)
8570 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 8571
8572 return 1;
8573}
8574
8575static int fan_write_cmd_disable(const char *cmd, int *rc)
8576{
8577 if (strlencmp(cmd, "disable") != 0)
8578 return 0;
8579
35ff8b9f
HMH		 8580 *rc = fan_set_disable();
8581 if (*rc == -ENXIO)
0978e012
JP		 8582 pr_err("disable command accepted for unsupported access mode %d\n",
8583 fan_control_access_mode);
74a60c0f
HMH		 8584 else if (!*rc)
8585 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 8586
8587 return 1;
8588}
8589
8590static int fan_write_cmd_speed(const char *cmd, int *rc)
8591{
8592 int speed;
8593
a8b7a662
HMH		 8594 /* TODO:
8595 * Support speed <low> <medium> <high> ? */
8596
18ad7996
HMH		 8597 if (sscanf(cmd, "speed %d", &speed) != 1)
8598 return 0;
8599
35ff8b9f
HMH		 8600 *rc = fan_set_speed(speed);
8601 if (*rc == -ENXIO)
0978e012
JP		 8602 pr_err("speed command accepted for unsupported access mode %d\n",
8603 fan_control_access_mode);
74a60c0f
HMH		 8604 else if (!*rc)
8605 tpacpi_disclose_usertask("procfs fan",
8606 "set speed to %d\n", speed);
18ad7996
HMH		 8607
8608 return 1;
8609}
8610
16663a87
HMH		 8611static int fan_write_cmd_watchdog(const char *cmd, int *rc)
8612{
8613 int interval;
8614
8615 if (sscanf(cmd, "watchdog %d", &interval) != 1)
8616 return 0;
8617
8618 if (interval < 0 || interval > 120)
8619 *rc = -EINVAL;
74a60c0f 8620 else {
16663a87 8621 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 8622 tpacpi_disclose_usertask("procfs fan",
8623 "set watchdog timer to %d\n",
8624 interval);
8625 }
16663a87
HMH		 8626
8627 return 1;
8628}
8629
18ad7996
HMH		 8630static int fan_write(char *buf)
8631{
8632 char *cmd;
8633 int rc = 0;
8634
8635 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 8636 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 8637 fan_write_cmd_level(cmd, &rc)) &&
efa27145 8638 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 8639 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 8640 fan_write_cmd_disable(cmd, &rc) ||
8641 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 8642 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 8643 fan_write_cmd_speed(cmd, &rc))
8644 )
8645 rc = -EINVAL;
16663a87
HMH		 8646 else if (!rc)
8647 fan_watchdog_reset();
18ad7996
HMH		 8648 }
8649
8650 return rc;
8651}
8652
a5763f22
HMH		 8653static struct ibm_struct fan_driver_data = {
8654 .name = "fan",
8655 .read = fan_read,
8656 .write = fan_write,
8657 .exit = fan_exit,
75700e53
HMH		 8658 .suspend = fan_suspend,
8659 .resume = fan_resume,
a5763f22
HMH		 8660};
8661
420f9739
DH		 8662/*************************************************************************
8663 * Mute LED subdriver
8664 */
8665
8666
8667struct tp_led_table {
8668 acpi_string name;
8669 int on_value;
8670 int off_value;
8671 int state;
8672};
8673
8674static struct tp_led_table led_tables[] = {
8675 [TPACPI_LED_MUTE] = {
8676 .name = "SSMS",
8677 .on_value = 1,
8678 .off_value = 0,
8679 },
8680 [TPACPI_LED_MICMUTE] = {
8681 .name = "MMTS",
8682 .on_value = 2,
8683 .off_value = 0,
8684 },
8685};
8686
8687static int mute_led_on_off(struct tp_led_table *t, bool state)
8688{
8689 acpi_handle temp;
8690 int output;
8691
8692 if (!ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp))) {
8693 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
8694 return -EIO;
8695 }
8696
8697 if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
8698 state ? t->on_value : t->off_value))
8699 return -EIO;
8700
8701 t->state = state;
8702 return state;
8703}
8704
8705int tpacpi_led_set(int whichled, bool on)
8706{
8707 struct tp_led_table *t;
8708
8709 if (whichled < 0 || whichled >= TPACPI_LED_MAX)
8710 return -EINVAL;
8711
8712 t = &led_tables[whichled];
8713 if (t->state < 0 || t->state == on)
8714 return t->state;
8715 return mute_led_on_off(t, on);
8716}
8717EXPORT_SYMBOL_GPL(tpacpi_led_set);
8718
8719static int mute_led_init(struct ibm_init_struct *iibm)
8720{
8721 acpi_handle temp;
8722 int i;
8723
8724 for (i = 0; i < TPACPI_LED_MAX; i++) {
8725 struct tp_led_table *t = &led_tables[i];
8726 if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp)))
8727 mute_led_on_off(t, false);
8728 else
8729 t->state = -ENODEV;
8730 }
8731 return 0;
8732}
8733
8734static void mute_led_exit(void)
8735{
8736 int i;
8737
8738 for (i = 0; i < TPACPI_LED_MAX; i++)
8739 tpacpi_led_set(i, false);
8740}
8741
119f4498
TI		 8742static void mute_led_resume(void)
8743{
8744 int i;
8745
8746 for (i = 0; i < TPACPI_LED_MAX; i++) {
8747 struct tp_led_table *t = &led_tables[i];
8748 if (t->state >= 0)
8749 mute_led_on_off(t, t->state);
8750 }
8751}
8752
420f9739
DH		 8753static struct ibm_struct mute_led_driver_data = {
8754 .name = "mute_led",
8755 .exit = mute_led_exit,
119f4498 8756 .resume = mute_led_resume,
420f9739
DH		 8757};
8758
56b6aeb0
HMH		 8759/****************************************************************************
8760 ****************************************************************************
8761 *
8762 * Infrastructure
8763 *
8764 ****************************************************************************
8765 ****************************************************************************/
8766
8b468c0c
HMH		 8767/*
8768 * HKEY event callout for other subdrivers go here
8769 * (yes, it is ugly, but it is quick, safe, and gets the job done
8770 */
8771static void tpacpi_driver_event(const unsigned int hkey_event)
8772{
347a2686
HMH		 8773 if (ibm_backlight_device) {
8774 switch (hkey_event) {
8775 case TP_HKEY_EV_BRGHT_UP:
8776 case TP_HKEY_EV_BRGHT_DOWN:
8777 tpacpi_brightness_notify_change();
8778 }
8779 }
0d204c34
HMH		 8780 if (alsa_card) {
8781 switch (hkey_event) {
8782 case TP_HKEY_EV_VOL_UP:
8783 case TP_HKEY_EV_VOL_DOWN:
8784 case TP_HKEY_EV_VOL_MUTE:
8785 volume_alsa_notify_change();
8786 }
8787 }
8b468c0c
HMH		 8788}
8789
8b468c0c
HMH		 8790static void hotkey_driver_event(const unsigned int scancode)
8791{
67bcae6e 8792 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 8793}
8794
7fd40029
HMH		 8795/* sysfs name ---------------------------------------------------------- */
8796static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
8797 struct device_attribute *attr,
8798 char *buf)
8799{
e0c7dfe7 8800 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 8801}
8802
8803static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
8804 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
8805
8806/* --------------------------------------------------------------------- */
8807
56b6aeb0 8808/* /proc support */
94954cc6 8809static struct proc_dir_entry *proc_dir;
16663a87 8810
56b6aeb0
HMH		 8811/*
8812 * Module and infrastructure proble, init and exit handling
8813 */
1da177e4 8814
90ab5ee9 8815static bool force_load;
b21a15f6 8816
fe08bc4b 8817#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 8818static const char * __init str_supported(int is_supported)
fe08bc4b 8819{
a5763f22 8820 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 8821
72a979f0 8822 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 8823}
8824#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8825
b21a15f6
HMH		 8826static void ibm_exit(struct ibm_struct *ibm)
8827{
8828 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
8829
8830 list_del_init(&ibm->all_drivers);
8831
8832 if (ibm->flags.acpi_notify_installed) {
8833 dbg_printk(TPACPI_DBG_EXIT,
8834 "%s: acpi_remove_notify_handler\n", ibm->name);
8835 BUG_ON(!ibm->acpi);
8836 acpi_remove_notify_handler(*ibm->acpi->handle,
8837 ibm->acpi->type,
8838 dispatch_acpi_notify);
8839 ibm->flags.acpi_notify_installed = 0;
b21a15f6
HMH		 8840 }
8841
8842 if (ibm->flags.proc_created) {
8843 dbg_printk(TPACPI_DBG_EXIT,
8844 "%s: remove_proc_entry\n", ibm->name);
8845 remove_proc_entry(ibm->name, proc_dir);
8846 ibm->flags.proc_created = 0;
8847 }
8848
8849 if (ibm->flags.acpi_driver_registered) {
8850 dbg_printk(TPACPI_DBG_EXIT,
8851 "%s: acpi_bus_unregister_driver\n", ibm->name);
8852 BUG_ON(!ibm->acpi);
8853 acpi_bus_unregister_driver(ibm->acpi->driver);
8854 kfree(ibm->acpi->driver);
8855 ibm->acpi->driver = NULL;
8856 ibm->flags.acpi_driver_registered = 0;
8857 }
8858
8859 if (ibm->flags.init_called && ibm->exit) {
8860 ibm->exit();
8861 ibm->flags.init_called = 0;
8862 }
8863
8864 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
8865}
f74a27d4 8866
a5763f22 8867static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 8868{
8869 int ret;
a5763f22 8870 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 8871 struct proc_dir_entry *entry;
8872
a5763f22
HMH		 8873 BUG_ON(ibm == NULL);
8874
8875 INIT_LIST_HEAD(&ibm->all_drivers);
8876
92641177 8877 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 8878 return 0;
8879
fe08bc4b
HMH		 8880 dbg_printk(TPACPI_DBG_INIT,
8881 "probing for %s\n", ibm->name);
8882
a5763f22
HMH		 8883 if (iibm->init) {
8884 ret = iibm->init(iibm);
5fba344c
HMH		 8885 if (ret > 0)
8886 return 0; /* probe failed */
8887 if (ret)
1da177e4 8888 return ret;
a5763f22 8889
92641177 8890 ibm->flags.init_called = 1;
1da177e4
LT		 8891 }
8892
8d376cd6
HMH		 8893 if (ibm->acpi) {
8894 if (ibm->acpi->hid) {
8895 ret = register_tpacpi_subdriver(ibm);
8896 if (ret)
8897 goto err_out;
8898 }
5fba344c 8899
8d376cd6
HMH		 8900 if (ibm->acpi->notify) {
8901 ret = setup_acpi_notify(ibm);
8902 if (ret == -ENODEV) {
0978e012
JP		 8903 pr_notice("disabling subdriver %s\n",
8904 ibm->name);
8d376cd6
HMH		 8905 ret = 0;
8906 goto err_out;
8907 }
8908 if (ret < 0)
8909 goto err_out;
5fba344c 8910 }
5fba344c
HMH		 8911 }
8912
fe08bc4b
HMH		 8913 dbg_printk(TPACPI_DBG_INIT,
8914 "%s installed\n", ibm->name);
8915
78f81cc4 8916 if (ibm->read) {
d161a13f 8917 umode_t mode = iibm->base_procfs_mode;
887965e6 8918
b525c06c
HMH		 8919 if (!mode)
8920 mode = S_IRUGO;
887965e6
AD		 8921 if (ibm->write)
8922 mode |= S_IWUSR;
8923 entry = proc_create_data(ibm->name, mode, proc_dir,
8924 &dispatch_proc_fops, ibm);
78f81cc4 8925 if (!entry) {
0978e012 8926 pr_err("unable to create proc entry %s\n", ibm->name);
5fba344c
HMH		 8927 ret = -ENODEV;
8928 goto err_out;
78f81cc4 8929 }
92641177 8930 ibm->flags.proc_created = 1;
78f81cc4 8931 }
1da177e4 8932
a5763f22
HMH		 8933 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
8934
1da177e4 8935 return 0;
5fba344c
HMH		 8936
8937err_out:
fe08bc4b
HMH		 8938 dbg_printk(TPACPI_DBG_INIT,
8939 "%s: at error exit path with result %d\n",
8940 ibm->name, ret);
8941
5fba344c 8942 ibm_exit(ibm);
72a979f0 8943 return (ret < 0) ? ret : 0;
1da177e4
LT		 8944}
8945
56b6aeb0
HMH		 8946/* Probing */
8947
050df107
HMH		 8948static bool __pure __init tpacpi_is_fw_digit(const char c)
8949{
8950 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
8951}
8952
72a979f0 8953static bool __pure __init tpacpi_is_valid_fw_id(const char * const s,
050df107
HMH		 8954 const char t)
8955{
1b0eb5bc
AL		 8956 /*
8957 * Most models: xxyTkkWW (#.##c)
8958 * Ancient 570/600 and -SL lacks (#.##c)
8959 */
8960 if (s && strlen(s) >= 8 &&
050df107
HMH		 8961 tpacpi_is_fw_digit(s[0]) &&
8962 tpacpi_is_fw_digit(s[1]) &&
16a3d9f5
MI		 8963 s[2] == t &&
8964 (s[3] == 'T' || s[3] == 'N') &&
050df107 8965 tpacpi_is_fw_digit(s[4]) &&
1b0eb5bc
AL		 8966 tpacpi_is_fw_digit(s[5]))
8967 return true;
8968
8969 /* New models: xxxyTkkW (#.##c); T550 and some others */
8970 return s && strlen(s) >= 8 &&
8971 tpacpi_is_fw_digit(s[0]) &&
8972 tpacpi_is_fw_digit(s[1]) &&
8973 tpacpi_is_fw_digit(s[2]) &&
8974 s[3] == t &&
8975 (s[4] == 'T' || s[4] == 'N') &&
8976 tpacpi_is_fw_digit(s[5]) &&
8977 tpacpi_is_fw_digit(s[6]);
050df107
HMH		 8978}
8979
bf20e740
HMH		 8980/* returns 0 - probe ok, or < 0 - probe error.
8981 * Probe ok doesn't mean thinkpad found.
8982 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8983static int __must_check __init get_thinkpad_model_data(
8984 struct thinkpad_id_data *tp)
1da177e4 8985{
1855256c 8986 const struct dmi_device *dev = NULL;
56b6aeb0 8987 char ec_fw_string[18];
bf20e740 8988 char const *s;
1da177e4 8989
d5a2f2f1 8990 if (!tp)
bf20e740 8991 return -EINVAL;
d5a2f2f1
HMH		 8992
8993 memset(tp, 0, sizeof(*tp));
8994
8995 if (dmi_name_in_vendors("IBM"))
8996 tp->vendor = PCI_VENDOR_ID_IBM;
8997 else if (dmi_name_in_vendors("LENOVO"))
8998 tp->vendor = PCI_VENDOR_ID_LENOVO;
8999 else
bf20e740 9000 return 0;
d5a2f2f1 9001
bf20e740
HMH		 9002 s = dmi_get_system_info(DMI_BIOS_VERSION);
9003 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
9004 if (s && !tp->bios_version_str)
9005 return -ENOMEM;
050df107
HMH		 9006
9007 /* Really ancient ThinkPad 240X will fail this, which is fine */
16a3d9f5
MI		 9008 if (!(tpacpi_is_valid_fw_id(tp->bios_version_str, 'E') ||
9009 tpacpi_is_valid_fw_id(tp->bios_version_str, 'C')))
bf20e740 9010 return 0;
050df107 9011
d5a2f2f1
HMH		 9012 tp->bios_model = tp->bios_version_str[0]
9013 | (tp->bios_version_str[1] << 8);
050df107
HMH		 9014 tp->bios_release = (tp->bios_version_str[4] << 8)
9015 | tp->bios_version_str[5];
d5a2f2f1 9016
56b6aeb0
HMH		 9017 /*
9018 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
9019 * X32 or newer, all Z series; Some models must have an
9020 * up-to-date BIOS or they will not be detected.
9021 *
9022 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9023 */
9024 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
9025 if (sscanf(dev->name,
9026 "IBM ThinkPad Embedded Controller -[%17c",
9027 ec_fw_string) == 1) {
9028 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
9029 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 9030
9031 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 9032 if (!tp->ec_version_str)
9033 return -ENOMEM;
050df107
HMH		 9034
9035 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
9036 tp->ec_model = ec_fw_string[0]
9037 | (ec_fw_string[1] << 8);
9038 tp->ec_release = (ec_fw_string[4] << 8)
9039 | ec_fw_string[5];
9040 } else {
0978e012
JP		 9041 pr_notice("ThinkPad firmware release %s "
9042 "doesn't match the known patterns\n",
9043 ec_fw_string);
9044 pr_notice("please report this to %s\n",
9045 TPACPI_MAIL);
050df107 9046 }
d5a2f2f1 9047 break;
78f81cc4 9048 }
1da177e4 9049 }
d5a2f2f1 9050
bf20e740 9051 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
40f5c777 9052 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) {
bf20e740
HMH		 9053 tp->model_str = kstrdup(s, GFP_KERNEL);
9054 if (!tp->model_str)
9055 return -ENOMEM;
a4f46bb9
MI		 9056 } else {
9057 s = dmi_get_system_info(DMI_BIOS_VENDOR);
40f5c777 9058 if (s && !(strncasecmp(s, "Lenovo", 6))) {
a4f46bb9
MI		 9059 tp->model_str = kstrdup(s, GFP_KERNEL);
9060 if (!tp->model_str)
9061 return -ENOMEM;
9062 }
d5a2f2f1 9063 }
8c74adbc 9064
bf20e740
HMH		 9065 s = dmi_get_system_info(DMI_PRODUCT_NAME);
9066 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
9067 if (s && !tp->nummodel_str)
9068 return -ENOMEM;
9069
9070 return 0;
1da177e4
LT		 9071}
9072
5fba344c
HMH		 9073static int __init probe_for_thinkpad(void)
9074{
9075 int is_thinkpad;
9076
9077 if (acpi_disabled)
9078 return -ENODEV;
9079
e28393c0
HMH		 9080 /* It would be dangerous to run the driver in this case */
9081 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
9082 return -ENODEV;
9083
5fba344c
HMH		 9084 /*
9085 * Non-ancient models have better DMI tagging, but very old models
e675abaf 9086 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 9087 */
e675abaf
HMH		 9088 is_thinkpad = (thinkpad_id.model_str != NULL) ||
9089 (thinkpad_id.ec_model != 0) ||
9090 tpacpi_is_fw_known();
5fba344c 9091
437e470c
HMH		 9092 /* The EC handler is required */
9093 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
5fba344c
HMH		 9094 if (!ec_handle) {
9095 if (is_thinkpad)
0978e012 9096 pr_err("Not yet supported ThinkPad detected!\n");
5fba344c
HMH		 9097 return -ENODEV;
9098 }
9099
0dcef77c
HMH		 9100 if (!is_thinkpad && !force_load)
9101 return -ENODEV;
9102
5fba344c
HMH		 9103 return 0;
9104}
9105
7a43f788
HMH		 9106static void __init thinkpad_acpi_init_banner(void)
9107{
0978e012
JP		 9108 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
9109 pr_info("%s\n", TPACPI_URL);
7a43f788 9110
0978e012 9111 pr_info("ThinkPad BIOS %s, EC %s\n",
7a43f788
HMH		 9112 (thinkpad_id.bios_version_str) ?
9113 thinkpad_id.bios_version_str : "unknown",
9114 (thinkpad_id.ec_version_str) ?
9115 thinkpad_id.ec_version_str : "unknown");
9116
9117 BUG_ON(!thinkpad_id.vendor);
9118
9119 if (thinkpad_id.model_str)
0978e012 9120 pr_info("%s %s, model %s\n",
7a43f788
HMH		 9121 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
9122 "IBM" : ((thinkpad_id.vendor ==
9123 PCI_VENDOR_ID_LENOVO) ?
9124 "Lenovo" : "Unknown vendor"),
9125 thinkpad_id.model_str,
9126 (thinkpad_id.nummodel_str) ?
9127 thinkpad_id.nummodel_str : "unknown");
9128}
5fba344c 9129
56b6aeb0 9130/* Module init, exit, parameters */
1da177e4 9131
a5763f22
HMH		 9132static struct ibm_init_struct ibms_init[] __initdata = {
9133 {
a5763f22
HMH		 9134 .data = &thinkpad_acpi_driver_data,
9135 },
9136 {
9137 .init = hotkey_init,
9138 .data = &hotkey_driver_data,
9139 },
9140 {
9141 .init = bluetooth_init,
9142 .data = &bluetooth_driver_data,
9143 },
9144 {
9145 .init = wan_init,
9146 .data = &wan_driver_data,
9147 },
0045c0aa
HMH		 9148 {
9149 .init = uwb_init,
9150 .data = &uwb_driver_data,
9151 },
d7c1d17d 9152#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 9153 {
9154 .init = video_init,
b525c06c 9155 .base_procfs_mode = S_IRUSR,
a5763f22
HMH		 9156 .data = &video_driver_data,
9157 },
d7c1d17d 9158#endif
a5763f22
HMH		 9159 {
9160 .init = light_init,
9161 .data = &light_driver_data,
9162 },
a5763f22
HMH		 9163 {
9164 .init = cmos_init,
9165 .data = &cmos_driver_data,
9166 },
9167 {
9168 .init = led_init,
9169 .data = &led_driver_data,
9170 },
9171 {
9172 .init = beep_init,
9173 .data = &beep_driver_data,
9174 },
9175 {
9176 .init = thermal_init,
9177 .data = &thermal_driver_data,
9178 },
a5763f22
HMH		 9179 {
9180 .init = brightness_init,
9181 .data = &brightness_driver_data,
9182 },
9183 {
329e4e18 9184 .init = volume_init,
a5763f22
HMH		 9185 .data = &volume_driver_data,
9186 },
9187 {
9188 .init = fan_init,
9189 .data = &fan_driver_data,
9190 },
420f9739
DH		 9191 {
9192 .init = mute_led_init,
9193 .data = &mute_led_driver_data,
9194 },
a5763f22
HMH		 9195};
9196
3945ac36 9197static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 9198{
9199 unsigned int i;
a5763f22 9200 struct ibm_struct *ibm;
1da177e4 9201
59f91ff1
HMH		 9202 if (!kp || !kp->name || !val)
9203 return -EINVAL;
9204
a5763f22
HMH		 9205 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
9206 ibm = ibms_init[i].data;
59f91ff1
HMH		 9207 WARN_ON(ibm == NULL);
9208
9209 if (!ibm || !ibm->name)
9210 continue;
a5763f22
HMH		 9211
9212 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
9213 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 9214 return -ENOSPC;
a5763f22
HMH		 9215 strcpy(ibms_init[i].param, val);
9216 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 9217 return 0;
9218 }
a5763f22 9219 }
1da177e4 9220
1da177e4
LT		 9221 return -EINVAL;
9222}
9223
b09c7225 9224module_param(experimental, int, 0444);
f68080f8 9225MODULE_PARM_DESC(experimental,
35ff8b9f 9226 "Enables experimental features when non-zero");
56b6aeb0 9227
132ce091 9228module_param_named(debug, dbg_level, uint, 0);
f68080f8 9229MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 9230
b09c7225 9231module_param(force_load, bool, 0444);
f68080f8 9232MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 9233 "Attempts to load the driver even on a "
9234 "mis-identified ThinkPad when true");
0dcef77c 9235
b09c7225 9236module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 9237MODULE_PARM_DESC(fan_control,
35ff8b9f 9238 "Enables setting fan parameters features when true");
ecf2a80a 9239
b09c7225 9240module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 9241MODULE_PARM_DESC(brightness_mode,
35ff8b9f 9242 "Selects brightness control strategy: "
0e501834 9243 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 9244
b09c7225 9245module_param(brightness_enable, uint, 0444);
f68080f8 9246MODULE_PARM_DESC(brightness_enable,
35ff8b9f 9247 "Enables backlight control when 1, disables when 0");
87cc537a 9248
ff850c33 9249#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
329e4e18
HMH		 9250module_param_named(volume_mode, volume_mode, uint, 0444);
9251MODULE_PARM_DESC(volume_mode,
9252 "Selects volume control strategy: "
9253 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
9254
a112ceee
HMH		 9255module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
9256MODULE_PARM_DESC(volume_capabilities,
9257 "Selects the mixer capabilites: "
9258 "0=auto, 1=volume and mute, 2=mute only");
9259
c7ac6291
HMH		 9260module_param_named(volume_control, volume_control_allowed, bool, 0444);
9261MODULE_PARM_DESC(volume_control,
9262 "Enables software override for the console audio "
9263 "control when true");
9264
9a417ec0
AL		 9265module_param_named(software_mute, software_mute_requested, bool, 0444);
9266MODULE_PARM_DESC(software_mute,
9267 "Request full software mute control");
9268
0d204c34
HMH		 9269/* ALSA module API parameters */
9270module_param_named(index, alsa_index, int, 0444);
9271MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
9272module_param_named(id, alsa_id, charp, 0444);
9273MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
9274module_param_named(enable, alsa_enable, bool, 0444);
9275MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
ff850c33 9276#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
0d204c34 9277
e0c7dfe7 9278#define TPACPI_PARAM(feature) \
f68080f8 9279 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 9280 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 9281 "at module load, see documentation")
1da177e4 9282
e0c7dfe7
HMH		 9283TPACPI_PARAM(hotkey);
9284TPACPI_PARAM(bluetooth);
9285TPACPI_PARAM(video);
9286TPACPI_PARAM(light);
e0c7dfe7
HMH		 9287TPACPI_PARAM(cmos);
9288TPACPI_PARAM(led);
9289TPACPI_PARAM(beep);
e0c7dfe7
HMH		 9290TPACPI_PARAM(brightness);
9291TPACPI_PARAM(volume);
9292TPACPI_PARAM(fan);
78f81cc4 9293
a73f3091 9294#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 9295module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 9296MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
9297module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
9298MODULE_PARM_DESC(wlsw_state,
9299 "Initial state of the emulated WLSW switch");
9300
b09c7225 9301module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 9302MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
9303module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
9304MODULE_PARM_DESC(bluetooth_state,
9305 "Initial state of the emulated bluetooth switch");
9306
b09c7225 9307module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 9308MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
9309module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
9310MODULE_PARM_DESC(wwan_state,
9311 "Initial state of the emulated WWAN switch");
0045c0aa 9312
b09c7225 9313module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 9314MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
9315module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
9316MODULE_PARM_DESC(uwb_state,
9317 "Initial state of the emulated UWB switch");
a73f3091
HMH		 9318#endif
9319
b21a15f6
HMH		 9320static void thinkpad_acpi_module_exit(void)
9321{
9322 struct ibm_struct *ibm, *itmp;
9323
9324 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
9325
9326 list_for_each_entry_safe_reverse(ibm, itmp,
9327 &tpacpi_all_drivers,
9328 all_drivers) {
9329 ibm_exit(ibm);
9330 }
9331
9332 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
9333
9334 if (tpacpi_inputdev) {
9335 if (tp_features.input_device_registered)
9336 input_unregister_device(tpacpi_inputdev);
9337 else
9338 input_free_device(tpacpi_inputdev);
00d39597 9339 kfree(hotkey_keycode_map);
b21a15f6
HMH		 9340 }
9341
9342 if (tpacpi_hwmon)
9343 hwmon_device_unregister(tpacpi_hwmon);
9344
9345 if (tp_features.sensors_pdev_attrs_registered)
9346 device_remove_file(&tpacpi_sensors_pdev->dev,
9347 &dev_attr_thinkpad_acpi_pdev_name);
9348 if (tpacpi_sensors_pdev)
9349 platform_device_unregister(tpacpi_sensors_pdev);
9350 if (tpacpi_pdev)
9351 platform_device_unregister(tpacpi_pdev);
9352
9353 if (tp_features.sensors_pdrv_attrs_registered)
9354 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
9355 if (tp_features.platform_drv_attrs_registered)
9356 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
9357
9358 if (tp_features.sensors_pdrv_registered)
9359 platform_driver_unregister(&tpacpi_hwmon_pdriver);
9360
9361 if (tp_features.platform_drv_registered)
9362 platform_driver_unregister(&tpacpi_pdriver);
9363
9364 if (proc_dir)
e0c7dfe7 9365 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 9366
e0e3c061
HMH		 9367 if (tpacpi_wq)
9368 destroy_workqueue(tpacpi_wq);
9369
b21a15f6
HMH		 9370 kfree(thinkpad_id.bios_version_str);
9371 kfree(thinkpad_id.ec_version_str);
9372 kfree(thinkpad_id.model_str);
d2be15bd 9373 kfree(thinkpad_id.nummodel_str);
b21a15f6
HMH		 9374}
9375
f74a27d4 9376
1def7115 9377static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 9378{
9379 int ret, i;
9380
8fef502e
HMH		 9381 tpacpi_lifecycle = TPACPI_LIFE_INIT;
9382
54ae1501 9383 /* Driver-level probe */
d5a2f2f1 9384
bf20e740
HMH		 9385 ret = get_thinkpad_model_data(&thinkpad_id);
9386 if (ret) {
0978e012 9387 pr_err("unable to get DMI data: %d\n", ret);
bf20e740
HMH		 9388 thinkpad_acpi_module_exit();
9389 return ret;
9390 }
5fba344c 9391 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 9392 if (ret) {
9393 thinkpad_acpi_module_exit();
5fba344c 9394 return ret;
d5a2f2f1 9395 }
1da177e4 9396
54ae1501 9397 /* Driver initialization */
d5a2f2f1 9398
7a43f788
HMH		 9399 thinkpad_acpi_init_banner();
9400 tpacpi_check_outdated_fw();
9401
e0c7dfe7
HMH		 9402 TPACPI_ACPIHANDLE_INIT(ecrd);
9403 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 9404
e0e3c061
HMH		 9405 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
9406 if (!tpacpi_wq) {
9407 thinkpad_acpi_module_exit();
9408 return -ENOMEM;
9409 }
9410
e0c7dfe7 9411 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 9412 if (!proc_dir) {
0978e012 9413 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
1def7115 9414 thinkpad_acpi_module_exit();
1da177e4
LT		 9415 return -ENODEV;
9416 }
78f81cc4 9417
54ae1501
HMH		 9418 ret = platform_driver_register(&tpacpi_pdriver);
9419 if (ret) {
0978e012 9420 pr_err("unable to register main platform driver\n");
54ae1501
HMH		 9421 thinkpad_acpi_module_exit();
9422 return ret;
9423 }
ac36393d
HMH		 9424 tp_features.platform_drv_registered = 1;
9425
7fd40029
HMH		 9426 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
9427 if (ret) {
0978e012 9428 pr_err("unable to register hwmon platform driver\n");
7fd40029
HMH		 9429 thinkpad_acpi_module_exit();
9430 return ret;
9431 }
9432 tp_features.sensors_pdrv_registered = 1;
9433
176750d6 9434 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 9435 if (!ret) {
9436 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 9437 ret = tpacpi_create_driver_attributes(
9438 &tpacpi_hwmon_pdriver.driver);
2369cc94 9439 }
176750d6 9440 if (ret) {
0978e012 9441 pr_err("unable to create sysfs driver attributes\n");
176750d6
HMH		 9442 thinkpad_acpi_module_exit();
9443 return ret;
9444 }
2369cc94 9445 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 9446
54ae1501
HMH		 9447
9448 /* Device initialization */
e0c7dfe7 9449 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 9450 NULL, 0);
9451 if (IS_ERR(tpacpi_pdev)) {
9452 ret = PTR_ERR(tpacpi_pdev);
9453 tpacpi_pdev = NULL;
0978e012 9454 pr_err("unable to register platform device\n");
54ae1501
HMH		 9455 thinkpad_acpi_module_exit();
9456 return ret;
9457 }
7fd40029 9458 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 9459 TPACPI_HWMON_DRVR_NAME,
9460 -1, NULL, 0);
7fd40029
HMH		 9461 if (IS_ERR(tpacpi_sensors_pdev)) {
9462 ret = PTR_ERR(tpacpi_sensors_pdev);
9463 tpacpi_sensors_pdev = NULL;
0978e012 9464 pr_err("unable to register hwmon platform device\n");
7fd40029
HMH		 9465 thinkpad_acpi_module_exit();
9466 return ret;
9467 }
9468 ret = device_create_file(&tpacpi_sensors_pdev->dev,
9469 &dev_attr_thinkpad_acpi_pdev_name);
9470 if (ret) {
0978e012 9471 pr_err("unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 9472 thinkpad_acpi_module_exit();
9473 return ret;
9474 }
9475 tp_features.sensors_pdev_attrs_registered = 1;
9476 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 9477 if (IS_ERR(tpacpi_hwmon)) {
9478 ret = PTR_ERR(tpacpi_hwmon);
9479 tpacpi_hwmon = NULL;
0978e012 9480 pr_err("unable to register hwmon device\n");
54ae1501
HMH		 9481 thinkpad_acpi_module_exit();
9482 return ret;
9483 }
8523ed6f 9484 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 9485 tpacpi_inputdev = input_allocate_device();
9486 if (!tpacpi_inputdev) {
7f5d1cd6
HMH		 9487 thinkpad_acpi_module_exit();
9488 return -ENOMEM;
9489 } else {
9490 /* Prepare input device, but don't register */
9491 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 9492 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 9493 tpacpi_inputdev->id.bustype = BUS_HOST;
e28393c0 9494 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
7f5d1cd6
HMH		 9495 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
9496 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 9497 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 9498 }
77775838
HMH		 9499
9500 /* Init subdriver dependencies */
9501 tpacpi_detect_brightness_capabilities();
9502
9503 /* Init subdrivers */
a5763f22
HMH		 9504 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
9505 ret = ibm_init(&ibms_init[i]);
9506 if (ret >= 0 && *ibms_init[i].param)
9507 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 9508 if (ret < 0) {
1def7115 9509 thinkpad_acpi_module_exit();
1da177e4
LT		 9510 return ret;
9511 }
9512 }
b589ea4c
HMH		 9513
9514 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
9515
7f5d1cd6
HMH		 9516 ret = input_register_device(tpacpi_inputdev);
9517 if (ret < 0) {
0978e012 9518 pr_err("unable to register input device\n");
7f5d1cd6
HMH		 9519 thinkpad_acpi_module_exit();
9520 return ret;
9521 } else {
9522 tp_features.input_device_registered = 1;
9523 }
1da177e4
LT		 9524
9525 return 0;
9526}
9527
95e57ab2
HMH		 9528MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
9529
922fe097
HMH		 9530/*
9531 * This will autoload the driver in almost every ThinkPad
9532 * in widespread use.
9533 *
9534 * Only _VERY_ old models, like the 240, 240x and 570 lack
9535 * the HKEY event interface.
9536 */
9537MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
9538
f68080f8
HMH		 9539/*
9540 * DMI matching for module autoloading
9541 *
9542 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9543 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9544 *
9545 * Only models listed in thinkwiki will be supported, so add yours
9546 * if it is not there yet.
9547 */
9548#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 9549 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 9550
f68080f8
HMH		 9551/* Ancient thinkpad BIOSes have to be identified by
9552 * BIOS type or model number, and there are far less
9553 * BIOS types than model numbers... */
922fe097 9554IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 9555
f68f53a2
HMH		 9556MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9557MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 9558MODULE_DESCRIPTION(TPACPI_DESC);
9559MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 9560MODULE_LICENSE("GPL");
9561
1def7115
HMH		 9562module_init(thinkpad_acpi_module_init);
9563module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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