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Linux 4.0-rc1
[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;
322} tp_features;
323
92889022
HMH		 324static struct {
325 u16 hotkey_mask_ff:1;
c7ac6291 326 u16 volume_ctrl_forbidden:1;
92889022
HMH		 327} tp_warned;
328
0c78039f
HMH		 329struct thinkpad_id_data {
330 unsigned int vendor; /* ThinkPad vendor:
331 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
332
333 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
334 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
335
050df107 336 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
0c78039f 337 u16 ec_model;
050df107
HMH		 338 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
339 u16 ec_release;
0c78039f 340
8c74adbc
HMH		 341 char *model_str; /* ThinkPad T43 */
342 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
0c78039f 343};
0c78039f
HMH		 344static struct thinkpad_id_data thinkpad_id;
345
8fef502e
HMH		 346static enum {
347 TPACPI_LIFE_INIT = 0,
348 TPACPI_LIFE_RUNNING,
349 TPACPI_LIFE_EXITING,
350} tpacpi_lifecycle;
351
b21a15f6
HMH		 352static int experimental;
353static u32 dbg_level;
354
e0e3c061
HMH		 355static struct workqueue_struct *tpacpi_wq;
356
75bd3bf2
HMH		 357enum led_status_t {
358 TPACPI_LED_OFF = 0,
359 TPACPI_LED_ON,
360 TPACPI_LED_BLINK,
361};
362
4fa6811b
HMH		 363/* Special LED class that can defer work */
364struct tpacpi_led_classdev {
365 struct led_classdev led_classdev;
366 struct work_struct work;
75bd3bf2 367 enum led_status_t new_state;
edf2d778 368 int led;
4fa6811b
HMH		 369};
370
77775838
HMH		 371/* brightness level capabilities */
372static unsigned int bright_maxlvl; /* 0 = unknown */
373
a73f3091
HMH		 374#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
375static int dbg_wlswemul;
90ab5ee9 376static bool tpacpi_wlsw_emulstate;
a73f3091 377static int dbg_bluetoothemul;
90ab5ee9 378static bool tpacpi_bluetooth_emulstate;
a73f3091 379static int dbg_wwanemul;
90ab5ee9 380static bool tpacpi_wwan_emulstate;
0045c0aa 381static int dbg_uwbemul;
90ab5ee9 382static bool tpacpi_uwb_emulstate;
a73f3091
HMH		 383#endif
384
385
3dcc2c3b
HMH		 386/*************************************************************************
387 * Debugging helpers
388 */
389
0978e012
JP		 390#define dbg_printk(a_dbg_level, format, arg...) \
391do { \
392 if (dbg_level & (a_dbg_level)) \
393 printk(KERN_DEBUG pr_fmt("%s: " format), \
394 __func__, ##arg); \
395} while (0)
3dcc2c3b
HMH		 396
397#ifdef CONFIG_THINKPAD_ACPI_DEBUG
398#define vdbg_printk dbg_printk
399static const char *str_supported(int is_supported);
400#else
0978e012
JP		 401static inline const char *str_supported(int is_supported) { return ""; }
402#define vdbg_printk(a_dbg_level, format, arg...) \
403 no_printk(format, ##arg)
3dcc2c3b
HMH		 404#endif
405
73a94d86
HMH		 406static void tpacpi_log_usertask(const char * const what)
407{
0978e012
JP		 408 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"),
409 what, task_tgid_vnr(current));
73a94d86
HMH		 410}
411
0978e012
JP		 412#define tpacpi_disclose_usertask(what, format, arg...) \
413do { \
414 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \
415 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
416 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \
417 what, task_tgid_vnr(current), ## arg); \
418 } \
419} while (0)
3dcc2c3b 420
7d95a3d5
HMH		 421/*
422 * Quirk handling helpers
423 *
424 * ThinkPad IDs and versions seen in the field so far
425 * are two-characters from the set [0-9A-Z], i.e. base 36.
426 *
427 * We use values well outside that range as specials.
428 */
429
430#define TPACPI_MATCH_ANY 0xffffU
431#define TPACPI_MATCH_UNKNOWN 0U
432
433/* TPID('1', 'Y') == 0x5931 */
434#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
435
436#define TPACPI_Q_IBM(__id1, __id2, __quirk) \
437 { .vendor = PCI_VENDOR_ID_IBM, \
438 .bios = TPID(__id1, __id2), \
439 .ec = TPACPI_MATCH_ANY, \
440 .quirks = (__quirk) }
441
442#define TPACPI_Q_LNV(__id1, __id2, __quirk) \
443 { .vendor = PCI_VENDOR_ID_LENOVO, \
444 .bios = TPID(__id1, __id2), \
445 .ec = TPACPI_MATCH_ANY, \
446 .quirks = (__quirk) }
447
a112ceee
HMH		 448#define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
449 { .vendor = PCI_VENDOR_ID_LENOVO, \
450 .bios = TPACPI_MATCH_ANY, \
451 .ec = TPID(__id1, __id2), \
452 .quirks = (__quirk) }
453
7d95a3d5
HMH		 454struct tpacpi_quirk {
455 unsigned int vendor;
456 u16 bios;
457 u16 ec;
458 unsigned long quirks;
459};
460
461/**
462 * tpacpi_check_quirks() - search BIOS/EC version on a list
463 * @qlist: array of &struct tpacpi_quirk
464 * @qlist_size: number of elements in @qlist
465 *
466 * Iterates over a quirks list until one is found that matches the
467 * ThinkPad's vendor, BIOS and EC model.
468 *
469 * Returns 0 if nothing matches, otherwise returns the quirks field of
470 * the matching &struct tpacpi_quirk entry.
471 *
472 * The match criteria is: vendor, ec and bios much match.
473 */
474static unsigned long __init tpacpi_check_quirks(
475 const struct tpacpi_quirk *qlist,
476 unsigned int qlist_size)
477{
478 while (qlist_size) {
479 if ((qlist->vendor == thinkpad_id.vendor ||
480 qlist->vendor == TPACPI_MATCH_ANY) &&
481 (qlist->bios == thinkpad_id.bios_model ||
482 qlist->bios == TPACPI_MATCH_ANY) &&
483 (qlist->ec == thinkpad_id.ec_model ||
484 qlist->ec == TPACPI_MATCH_ANY))
485 return qlist->quirks;
486
487 qlist_size--;
488 qlist++;
489 }
490 return 0;
491}
492
e28393c0
HMH		 493static inline bool __pure __init tpacpi_is_lenovo(void)
494{
495 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO;
496}
497
498static inline bool __pure __init tpacpi_is_ibm(void)
499{
500 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM;
501}
7d95a3d5 502
56b6aeb0
HMH		 503/****************************************************************************
504 ****************************************************************************
505 *
506 * ACPI Helpers and device model
507 *
508 ****************************************************************************
509 ****************************************************************************/
510
511/*************************************************************************
512 * ACPI basic handles
513 */
1da177e4 514
94954cc6 515static acpi_handle root_handle;
437e470c 516static acpi_handle ec_handle;
1da177e4 517
e0c7dfe7 518#define TPACPI_HANDLE(object, parent, paths...) \
1da177e4 519 static acpi_handle object##_handle; \
3bd01896 520 static const acpi_handle * const object##_parent __initconst = \
ef07a5ab
HMH		 521 &parent##_handle; \
522 static char *object##_paths[] __initdata = { paths }
1da177e4 523
e0c7dfe7
HMH		 524TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
525TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
78f81cc4 526
35ff8b9f
HMH		 527TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
528 /* T4x, X31, X40 */
78f81cc4
BD		 529 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
530 "\\CMS", /* R40, R40e */
56b6aeb0 531 ); /* all others */
78f81cc4 532
e0c7dfe7 533TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
78f81cc4
BD		 534 "^HKEY", /* R30, R31 */
535 "HKEY", /* all others */
56b6aeb0 536 ); /* 570 */
78f81cc4 537
56b6aeb0
HMH		 538/*************************************************************************
539 * ACPI helpers
a8b7a662
HMH		 540 */
541
1da177e4 542static int acpi_evalf(acpi_handle handle,
eceeb437 543 int *res, char *method, char *fmt, ...)
1da177e4
LT		 544{
545 char *fmt0 = fmt;
78f81cc4 546 struct acpi_object_list params;
e0c7dfe7 547 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
78f81cc4
BD		 548 struct acpi_buffer result, *resultp;
549 union acpi_object out_obj;
550 acpi_status status;
551 va_list ap;
552 char res_type;
553 int success;
554 int quiet;
1da177e4
LT		 555
556 if (!*fmt) {
0978e012 557 pr_err("acpi_evalf() called with empty format\n");
1da177e4
LT		 558 return 0;
559 }
560
561 if (*fmt == 'q') {
562 quiet = 1;
563 fmt++;
564 } else
565 quiet = 0;
566
567 res_type = *(fmt++);
568
569 params.count = 0;
570 params.pointer = &in_objs[0];
571
572 va_start(ap, fmt);
573 while (*fmt) {
574 char c = *(fmt++);
575 switch (c) {
576 case 'd': /* int */
577 in_objs[params.count].integer.value = va_arg(ap, int);
578 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
579 break;
78f81cc4 580 /* add more types as needed */
1da177e4 581 default:
0978e012 582 pr_err("acpi_evalf() called "
1da177e4 583 "with invalid format character '%c'\n", c);
21365851 584 va_end(ap);
1da177e4
LT		 585 return 0;
586 }
587 }
588 va_end(ap);
589
78f81cc4
BD		 590 if (res_type != 'v') {
591 result.length = sizeof(out_obj);
592 result.pointer = &out_obj;
593 resultp = &result;
594 } else
595 resultp = NULL;
1da177e4 596
78f81cc4 597 status = acpi_evaluate_object(handle, method, &params, resultp);
1da177e4
LT		 598
599 switch (res_type) {
78f81cc4 600 case 'd': /* int */
263f4a30
HMH		 601 success = (status == AE_OK &&
602 out_obj.type == ACPI_TYPE_INTEGER);
603 if (success && res)
eceeb437 604 *res = out_obj.integer.value;
1da177e4 605 break;
78f81cc4 606 case 'v': /* void */
1da177e4
LT		 607 success = status == AE_OK;
608 break;
78f81cc4 609 /* add more types as needed */
1da177e4 610 default:
0978e012 611 pr_err("acpi_evalf() called "
1da177e4
LT		 612 "with invalid format character '%c'\n", res_type);
613 return 0;
614 }
615
56b6aeb0 616 if (!success && !quiet)
0978e012 617 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n",
263f4a30 618 method, fmt0, acpi_format_exception(status));
56b6aeb0
HMH		 619
620 return success;
621}
622
35ff8b9f 623static int acpi_ec_read(int i, u8 *p)
56b6aeb0
HMH		 624{
625 int v;
626
627 if (ecrd_handle) {
628 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
629 return 0;
630 *p = v;
631 } else {
632 if (ec_read(i, p) < 0)
633 return 0;
634 }
635
636 return 1;
637}
638
639static int acpi_ec_write(int i, u8 v)
640{
641 if (ecwr_handle) {
642 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
643 return 0;
644 } else {
645 if (ec_write(i, v) < 0)
646 return 0;
647 }
648
649 return 1;
650}
651
c9bea99c
HMH		 652static int issue_thinkpad_cmos_command(int cmos_cmd)
653{
654 if (!cmos_handle)
655 return -ENXIO;
656
657 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
658 return -EIO;
659
660 return 0;
661}
662
56b6aeb0
HMH		 663/*************************************************************************
664 * ACPI device model
665 */
666
35ff8b9f
HMH		 667#define TPACPI_ACPIHANDLE_INIT(object) \
668 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
ef07a5ab 669 object##_paths, ARRAY_SIZE(object##_paths))
f74a27d4 670
ef07a5ab
HMH		 671static void __init drv_acpi_handle_init(const char *name,
672 acpi_handle *handle, const acpi_handle parent,
673 char **paths, const int num_paths)
56b6aeb0
HMH		 674{
675 int i;
676 acpi_status status;
677
5ae930e6
HMH		 678 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
679 name);
680
56b6aeb0
HMH		 681 for (i = 0; i < num_paths; i++) {
682 status = acpi_get_handle(parent, paths[i], handle);
683 if (ACPI_SUCCESS(status)) {
5ae930e6
HMH		 684 dbg_printk(TPACPI_DBG_INIT,
685 "Found ACPI handle %s for %s\n",
ef07a5ab 686 paths[i], name);
56b6aeb0
HMH		 687 return;
688 }
689 }
690
5ae930e6
HMH		 691 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
692 name);
56b6aeb0
HMH		 693 *handle = NULL;
694}
695
437e470c
HMH		 696static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
697 u32 level, void *context, void **return_value)
698{
46445b6b
AL		 699 struct acpi_device *dev;
700 if (!strcmp(context, "video")) {
701 if (acpi_bus_get_device(handle, &dev))
702 return AE_OK;
703 if (strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
704 return AE_OK;
705 }
706
437e470c
HMH		 707 *(acpi_handle *)return_value = handle;
708
709 return AE_CTRL_TERMINATE;
710}
711
712static void __init tpacpi_acpi_handle_locate(const char *name,
713 const char *hid,
714 acpi_handle *handle)
715{
716 acpi_status status;
717 acpi_handle device_found;
718
46445b6b 719 BUG_ON(!name || !handle);
437e470c
HMH		 720 vdbg_printk(TPACPI_DBG_INIT,
721 "trying to locate ACPI handle for %s, using HID %s\n",
46445b6b 722 name, hid ? hid : "NULL");
437e470c
HMH		 723
724 memset(&device_found, 0, sizeof(device_found));
725 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback,
726 (void *)name, &device_found);
727
728 *handle = NULL;
729
730 if (ACPI_SUCCESS(status)) {
731 *handle = device_found;
732 dbg_printk(TPACPI_DBG_INIT,
733 "Found ACPI handle for %s\n", name);
734 } else {
735 vdbg_printk(TPACPI_DBG_INIT,
736 "Could not locate an ACPI handle for %s: %s\n",
737 name, acpi_format_exception(status));
738 }
739}
740
8d376cd6 741static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
56b6aeb0
HMH		 742{
743 struct ibm_struct *ibm = data;
744
8fef502e
HMH		 745 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
746 return;
747
8d376cd6 748 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
56b6aeb0
HMH		 749 return;
750
8d376cd6 751 ibm->acpi->notify(ibm, event);
56b6aeb0
HMH		 752}
753
8d376cd6 754static int __init setup_acpi_notify(struct ibm_struct *ibm)
56b6aeb0
HMH		 755{
756 acpi_status status;
5ae930e6 757 int rc;
56b6aeb0 758
8d376cd6
HMH		 759 BUG_ON(!ibm->acpi);
760
761 if (!*ibm->acpi->handle)
56b6aeb0
HMH		 762 return 0;
763
5ae930e6 764 vdbg_printk(TPACPI_DBG_INIT,
fe08bc4b
HMH		 765 "setting up ACPI notify for %s\n", ibm->name);
766
5ae930e6
HMH		 767 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
768 if (rc < 0) {
0978e012 769 pr_err("acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc);
56b6aeb0
HMH		 770 return -ENODEV;
771 }
772
db89b4f0 773 ibm->acpi->device->driver_data = ibm;
8d376cd6 774 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
e0c7dfe7 775 TPACPI_ACPI_EVENT_PREFIX,
643f12db 776 ibm->name);
56b6aeb0 777
8d376cd6
HMH		 778 status = acpi_install_notify_handler(*ibm->acpi->handle,
779 ibm->acpi->type, dispatch_acpi_notify, ibm);
56b6aeb0
HMH		 780 if (ACPI_FAILURE(status)) {
781 if (status == AE_ALREADY_EXISTS) {
0978e012
JP		 782 pr_notice("another device driver is already "
783 "handling %s events\n", ibm->name);
56b6aeb0 784 } else {
0978e012 785 pr_err("acpi_install_notify_handler(%s) failed: %s\n",
72f19921 786 ibm->name, acpi_format_exception(status));
56b6aeb0
HMH		 787 }
788 return -ENODEV;
789 }
8d376cd6 790 ibm->flags.acpi_notify_installed = 1;
56b6aeb0
HMH		 791 return 0;
792}
793
8d376cd6 794static int __init tpacpi_device_add(struct acpi_device *device)
56b6aeb0
HMH		 795{
796 return 0;
797}
798
6700121b 799static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
56b6aeb0 800{
5ae930e6 801 int rc;
56b6aeb0 802
fe08bc4b
HMH		 803 dbg_printk(TPACPI_DBG_INIT,
804 "registering %s as an ACPI driver\n", ibm->name);
805
8d376cd6
HMH		 806 BUG_ON(!ibm->acpi);
807
808 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
809 if (!ibm->acpi->driver) {
0978e012 810 pr_err("failed to allocate memory for ibm->acpi->driver\n");
5fba344c 811 return -ENOMEM;
56b6aeb0
HMH		 812 }
813
e0c7dfe7 814 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
8d376cd6 815 ibm->acpi->driver->ids = ibm->acpi->hid;
1ba90e3a 816
8d376cd6 817 ibm->acpi->driver->ops.add = &tpacpi_device_add;
56b6aeb0 818
5ae930e6
HMH		 819 rc = acpi_bus_register_driver(ibm->acpi->driver);
820 if (rc < 0) {
0978e012 821 pr_err("acpi_bus_register_driver(%s) failed: %d\n",
1ba90e3a 822 ibm->name, rc);
8d376cd6
HMH		 823 kfree(ibm->acpi->driver);
824 ibm->acpi->driver = NULL;
5ae930e6 825 } else if (!rc)
8d376cd6 826 ibm->flags.acpi_driver_registered = 1;
56b6aeb0 827
5ae930e6 828 return rc;
56b6aeb0
HMH		 829}
830
831
832/****************************************************************************
833 ****************************************************************************
834 *
835 * Procfs Helpers
836 *
837 ****************************************************************************
838 ****************************************************************************/
839
887965e6 840static int dispatch_proc_show(struct seq_file *m, void *v)
56b6aeb0 841{
887965e6 842 struct ibm_struct *ibm = m->private;
56b6aeb0
HMH		 843
844 if (!ibm || !ibm->read)
845 return -EINVAL;
887965e6
AD		 846 return ibm->read(m);
847}
56b6aeb0 848
887965e6
AD		 849static int dispatch_proc_open(struct inode *inode, struct file *file)
850{
d9dda78b 851 return single_open(file, dispatch_proc_show, PDE_DATA(inode));
56b6aeb0
HMH		 852}
853
887965e6 854static ssize_t dispatch_proc_write(struct file *file,
35ff8b9f 855 const char __user *userbuf,
887965e6 856 size_t count, loff_t *pos)
56b6aeb0 857{
d9dda78b 858 struct ibm_struct *ibm = PDE_DATA(file_inode(file));
56b6aeb0
HMH		 859 char *kernbuf;
860 int ret;
861
862 if (!ibm || !ibm->write)
863 return -EINVAL;
5b05d469
MB		 864 if (count > PAGE_SIZE - 2)
865 return -EINVAL;
56b6aeb0
HMH		 866
867 kernbuf = kmalloc(count + 2, GFP_KERNEL);
868 if (!kernbuf)
869 return -ENOMEM;
1da177e4 870
56b6aeb0
HMH		 871 if (copy_from_user(kernbuf, userbuf, count)) {
872 kfree(kernbuf);
873 return -EFAULT;
874 }
1da177e4 875
56b6aeb0
HMH		 876 kernbuf[count] = 0;
877 strcat(kernbuf, ",");
878 ret = ibm->write(kernbuf);
879 if (ret == 0)
880 ret = count;
1da177e4 881
56b6aeb0
HMH		 882 kfree(kernbuf);
883
884 return ret;
1da177e4
LT		 885}
886
887965e6
AD		 887static const struct file_operations dispatch_proc_fops = {
888 .owner = THIS_MODULE,
889 .open = dispatch_proc_open,
890 .read = seq_read,
891 .llseek = seq_lseek,
892 .release = single_release,
893 .write = dispatch_proc_write,
894};
895
1da177e4
LT		 896static char *next_cmd(char **cmds)
897{
898 char *start = *cmds;
899 char *end;
900
901 while ((end = strchr(start, ',')) && end == start)
902 start = end + 1;
903
904 if (!end)
905 return NULL;
906
907 *end = 0;
908 *cmds = end + 1;
909 return start;
910}
911
56b6aeb0 912
54ae1501
HMH		 913/****************************************************************************
914 ****************************************************************************
915 *
7f5d1cd6 916 * Device model: input, hwmon and platform
54ae1501
HMH		 917 *
918 ****************************************************************************
919 ****************************************************************************/
920
94954cc6 921static struct platform_device *tpacpi_pdev;
7fd40029 922static struct platform_device *tpacpi_sensors_pdev;
1beeffe4 923static struct device *tpacpi_hwmon;
7f5d1cd6 924static struct input_dev *tpacpi_inputdev;
8523ed6f 925static struct mutex tpacpi_inputdev_send_mutex;
b21a15f6 926static LIST_HEAD(tpacpi_all_drivers);
e295e850 927
3567a4e2 928#ifdef CONFIG_PM_SLEEP
4959a781 929static int tpacpi_suspend_handler(struct device *dev)
083f1760
HMH		 930{
931 struct ibm_struct *ibm, *itmp;
932
933 list_for_each_entry_safe(ibm, itmp,
934 &tpacpi_all_drivers,
935 all_drivers) {
936 if (ibm->suspend)
fd3c3a42 937 (ibm->suspend)();
083f1760
HMH		 938 }
939
940 return 0;
941}
942
4959a781 943static int tpacpi_resume_handler(struct device *dev)
e295e850
HMH		 944{
945 struct ibm_struct *ibm, *itmp;
946
947 list_for_each_entry_safe(ibm, itmp,
948 &tpacpi_all_drivers,
949 all_drivers) {
950 if (ibm->resume)
951 (ibm->resume)();
952 }
953
954 return 0;
955}
3567a4e2 956#endif
e295e850 957
4959a781
RW		 958static SIMPLE_DEV_PM_OPS(tpacpi_pm,
959 tpacpi_suspend_handler, tpacpi_resume_handler);
960
90d9d3c7
HMH		 961static void tpacpi_shutdown_handler(struct platform_device *pdev)
962{
963 struct ibm_struct *ibm, *itmp;
964
965 list_for_each_entry_safe(ibm, itmp,
966 &tpacpi_all_drivers,
967 all_drivers) {
968 if (ibm->shutdown)
969 (ibm->shutdown)();
970 }
971}
972
54ae1501
HMH		 973static struct platform_driver tpacpi_pdriver = {
974 .driver = {
e0c7dfe7 975 .name = TPACPI_DRVR_NAME,
4959a781 976 .pm = &tpacpi_pm,
54ae1501 977 },
90d9d3c7 978 .shutdown = tpacpi_shutdown_handler,
54ae1501
HMH		 979};
980
7fd40029
HMH		 981static struct platform_driver tpacpi_hwmon_pdriver = {
982 .driver = {
e0c7dfe7 983 .name = TPACPI_HWMON_DRVR_NAME,
7fd40029
HMH		 984 },
985};
54ae1501 986
176750d6 987/*************************************************************************
b21a15f6 988 * sysfs support helpers
176750d6
HMH		 989 */
990
b21a15f6
HMH		 991struct attribute_set {
992 unsigned int members, max_members;
993 struct attribute_group group;
176750d6
HMH		 994};
995
7252374a
HMH		 996struct attribute_set_obj {
997 struct attribute_set s;
998 struct attribute *a;
999} __attribute__((packed));
1000
1001static struct attribute_set *create_attr_set(unsigned int max_members,
35ff8b9f 1002 const char *name)
7252374a
HMH		 1003{
1004 struct attribute_set_obj *sobj;
1005
1006 if (max_members == 0)
1007 return NULL;
1008
1009 /* Allocates space for implicit NULL at the end too */
1010 sobj = kzalloc(sizeof(struct attribute_set_obj) +
1011 max_members * sizeof(struct attribute *),
1012 GFP_KERNEL);
1013 if (!sobj)
1014 return NULL;
1015 sobj->s.max_members = max_members;
1016 sobj->s.group.attrs = &sobj->a;
1017 sobj->s.group.name = name;
1018
1019 return &sobj->s;
1020}
1021
f74a27d4
HMH		 1022#define destroy_attr_set(_set) \
1023 kfree(_set);
1024
7252374a 1025/* not multi-threaded safe, use it in a single thread per set */
35ff8b9f 1026static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
7252374a
HMH		 1027{
1028 if (!s || !attr)
1029 return -EINVAL;
1030
1031 if (s->members >= s->max_members)
1032 return -ENOMEM;
1033
1034 s->group.attrs[s->members] = attr;
1035 s->members++;
1036
1037 return 0;
1038}
1039
35ff8b9f 1040static int add_many_to_attr_set(struct attribute_set *s,
7252374a
HMH		 1041 struct attribute **attr,
1042 unsigned int count)
1043{
1044 int i, res;
1045
1046 for (i = 0; i < count; i++) {
1047 res = add_to_attr_set(s, attr[i]);
1048 if (res)
1049 return res;
1050 }
1051
1052 return 0;
1053}
1054
35ff8b9f 1055static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
7252374a
HMH		 1056{
1057 sysfs_remove_group(kobj, &s->group);
1058 destroy_attr_set(s);
1059}
1060
f74a27d4
HMH		 1061#define register_attr_set_with_sysfs(_attr_set, _kobj) \
1062 sysfs_create_group(_kobj, &_attr_set->group)
1063
7252374a
HMH		 1064static int parse_strtoul(const char *buf,
1065 unsigned long max, unsigned long *value)
1066{
1067 char *endp;
1068
e7d2860b
AGR		 1069 *value = simple_strtoul(skip_spaces(buf), &endp, 0);
1070 endp = skip_spaces(endp);
7252374a
HMH		 1071 if (*endp || *value > max)
1072 return -EINVAL;
1073
1074 return 0;
1075}
1076
d64c81c4
HMH		 1077static void tpacpi_disable_brightness_delay(void)
1078{
1079 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
0978e012 1080 pr_notice("ACPI backlight control delay disabled\n");
d64c81c4
HMH		 1081}
1082
19d337df
JB		 1083static void printk_deprecated_attribute(const char * const what,
1084 const char * const details)
1085{
1086 tpacpi_log_usertask("deprecated sysfs attribute");
0978e012 1087 pr_warn("WARNING: sysfs attribute %s is deprecated and "
19d337df
JB		 1088 "will be removed. %s\n",
1089 what, details);
1090}
1091
1092/*************************************************************************
1093 * rfkill and radio control support helpers
1094 */
1095
1096/*
1097 * ThinkPad-ACPI firmware handling model:
1098 *
1099 * WLSW (master wireless switch) is event-driven, and is common to all
1100 * firmware-controlled radios. It cannot be controlled, just monitored,
1101 * as expected. It overrides all radio state in firmware
1102 *
1103 * The kernel, a masked-off hotkey, and WLSW can change the radio state
1104 * (TODO: verify how WLSW interacts with the returned radio state).
1105 *
1106 * The only time there are shadow radio state changes, is when
1107 * masked-off hotkeys are used.
1108 */
1109
1110/*
1111 * Internal driver API for radio state:
1112 *
1113 * int: < 0 = error, otherwise enum tpacpi_rfkill_state
1114 * bool: true means radio blocked (off)
1115 */
1116enum tpacpi_rfkill_state {
1117 TPACPI_RFK_RADIO_OFF = 0,
1118 TPACPI_RFK_RADIO_ON
1119};
1120
1121/* rfkill switches */
1122enum tpacpi_rfk_id {
1123 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
1124 TPACPI_RFK_WWAN_SW_ID,
1125 TPACPI_RFK_UWB_SW_ID,
1126 TPACPI_RFK_SW_MAX
1127};
1128
1129static const char *tpacpi_rfkill_names[] = {
1130 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
1131 [TPACPI_RFK_WWAN_SW_ID] = "wwan",
1132 [TPACPI_RFK_UWB_SW_ID] = "uwb",
1133 [TPACPI_RFK_SW_MAX] = NULL
1134};
1135
1136/* ThinkPad-ACPI rfkill subdriver */
1137struct tpacpi_rfk {
1138 struct rfkill *rfkill;
1139 enum tpacpi_rfk_id id;
1140 const struct tpacpi_rfk_ops *ops;
1141};
1142
1143struct tpacpi_rfk_ops {
1144 /* firmware interface */
1145 int (*get_status)(void);
1146 int (*set_status)(const enum tpacpi_rfkill_state);
1147};
1148
1149static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
1150
1151/* Query FW and update rfkill sw state for a given rfkill switch */
1152static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
1153{
1154 int status;
1155
1156 if (!tp_rfk)
1157 return -ENODEV;
1158
1159 status = (tp_rfk->ops->get_status)();
1160 if (status < 0)
1161 return status;
1162
1163 rfkill_set_sw_state(tp_rfk->rfkill,
1164 (status == TPACPI_RFK_RADIO_OFF));
1165
1166 return status;
1167}
1168
1169/* Query FW and update rfkill sw state for all rfkill switches */
1170static void tpacpi_rfk_update_swstate_all(void)
1171{
1172 unsigned int i;
1173
1174 for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
1175 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
1176}
1177
1178/*
1179 * Sync the HW-blocking state of all rfkill switches,
1180 * do notice it causes the rfkill core to schedule uevents
1181 */
1182static void tpacpi_rfk_update_hwblock_state(bool blocked)
1183{
1184 unsigned int i;
1185 struct tpacpi_rfk *tp_rfk;
1186
1187 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
1188 tp_rfk = tpacpi_rfkill_switches[i];
1189 if (tp_rfk) {
1190 if (rfkill_set_hw_state(tp_rfk->rfkill,
1191 blocked)) {
1192 /* ignore -- we track sw block */
1193 }
1194 }
1195 }
1196}
1197
1198/* Call to get the WLSW state from the firmware */
1199static int hotkey_get_wlsw(void);
1200
1201/* Call to query WLSW state and update all rfkill switches */
1202static bool tpacpi_rfk_check_hwblock_state(void)
1203{
1204 int res = hotkey_get_wlsw();
1205 int hw_blocked;
1206
1207 /* When unknown or unsupported, we have to assume it is unblocked */
1208 if (res < 0)
1209 return false;
1210
1211 hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
1212 tpacpi_rfk_update_hwblock_state(hw_blocked);
1213
1214 return hw_blocked;
1215}
1216
1217static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
1218{
1219 struct tpacpi_rfk *tp_rfk = data;
1220 int res;
1221
1222 dbg_printk(TPACPI_DBG_RFKILL,
1223 "request to change radio state to %s\n",
1224 blocked ? "blocked" : "unblocked");
1225
1226 /* try to set radio state */
1227 res = (tp_rfk->ops->set_status)(blocked ?
1228 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
1229
1230 /* and update the rfkill core with whatever the FW really did */
1231 tpacpi_rfk_update_swstate(tp_rfk);
1232
1233 return (res < 0) ? res : 0;
1234}
1235
1236static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
1237 .set_block = tpacpi_rfk_hook_set_block,
1238};
1239
1240static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
1241 const struct tpacpi_rfk_ops *tp_rfkops,
0e74dc26
HMH		 1242 const enum rfkill_type rfktype,
1243 const char *name,
19d337df 1244 const bool set_default)
0e74dc26 1245{
19d337df 1246 struct tpacpi_rfk *atp_rfk;
0e74dc26 1247 int res;
06d5caf4 1248 bool sw_state = false;
5451a923 1249 bool hw_state;
06d5caf4 1250 int sw_status;
90d9d3c7 1251
19d337df
JB		 1252 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
1253
19d337df
JB		 1254 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
1255 if (atp_rfk)
1256 atp_rfk->rfkill = rfkill_alloc(name,
1257 &tpacpi_pdev->dev,
1258 rfktype,
1259 &tpacpi_rfk_rfkill_ops,
1260 atp_rfk);
1261 if (!atp_rfk || !atp_rfk->rfkill) {
0978e012 1262 pr_err("failed to allocate memory for rfkill class\n");
19d337df 1263 kfree(atp_rfk);
0e74dc26
HMH		 1264 return -ENOMEM;
1265 }
1266
19d337df
JB		 1267 atp_rfk->id = id;
1268 atp_rfk->ops = tp_rfkops;
0e74dc26 1269
06d5caf4
AJ		 1270 sw_status = (tp_rfkops->get_status)();
1271 if (sw_status < 0) {
0978e012
JP		 1272 pr_err("failed to read initial state for %s, error %d\n",
1273 name, sw_status);
b3fa1329 1274 } else {
06d5caf4 1275 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF);
b3fa1329
AJ		 1276 if (set_default) {
1277 /* try to keep the initial state, since we ask the
1278 * firmware to preserve it across S5 in NVRAM */
06d5caf4 1279 rfkill_init_sw_state(atp_rfk->rfkill, sw_state);
b3fa1329
AJ		 1280 }
1281 }
5451a923
HMH		 1282 hw_state = tpacpi_rfk_check_hwblock_state();
1283 rfkill_set_hw_state(atp_rfk->rfkill, hw_state);
19d337df
JB		 1284
1285 res = rfkill_register(atp_rfk->rfkill);
0e74dc26 1286 if (res < 0) {
0978e012 1287 pr_err("failed to register %s rfkill switch: %d\n", name, res);
19d337df
JB		 1288 rfkill_destroy(atp_rfk->rfkill);
1289 kfree(atp_rfk);
0e74dc26
HMH		 1290 return res;
1291 }
1292
19d337df 1293 tpacpi_rfkill_switches[id] = atp_rfk;
5451a923 1294
0978e012 1295 pr_info("rfkill switch %s: radio is %sblocked\n",
5451a923 1296 name, (sw_state || hw_state) ? "" : "un");
0e74dc26
HMH		 1297 return 0;
1298}
1299
19d337df 1300static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
73a94d86 1301{
19d337df
JB		 1302 struct tpacpi_rfk *tp_rfk;
1303
1304 BUG_ON(id >= TPACPI_RFK_SW_MAX);
1305
1306 tp_rfk = tpacpi_rfkill_switches[id];
1307 if (tp_rfk) {
1308 rfkill_unregister(tp_rfk->rfkill);
5f0dadb4 1309 rfkill_destroy(tp_rfk->rfkill);
19d337df
JB		 1310 tpacpi_rfkill_switches[id] = NULL;
1311 kfree(tp_rfk);
1312 }
73a94d86
HMH		 1313}
1314
1315static void printk_deprecated_rfkill_attribute(const char * const what)
1316{
1317 printk_deprecated_attribute(what,
1318 "Please switch to generic rfkill before year 2010");
1319}
1320
19d337df
JB		 1321/* sysfs <radio> enable ------------------------------------------------ */
1322static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
1323 struct device_attribute *attr,
1324 char *buf)
1325{
1326 int status;
1327
1328 printk_deprecated_rfkill_attribute(attr->attr.name);
1329
1330 /* This is in the ABI... */
1331 if (tpacpi_rfk_check_hwblock_state()) {
1332 status = TPACPI_RFK_RADIO_OFF;
1333 } else {
1334 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1335 if (status < 0)
1336 return status;
1337 }
1338
1339 return snprintf(buf, PAGE_SIZE, "%d\n",
1340 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
1341}
1342
1343static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
1344 struct device_attribute *attr,
1345 const char *buf, size_t count)
1346{
1347 unsigned long t;
1348 int res;
1349
1350 printk_deprecated_rfkill_attribute(attr->attr.name);
1351
1352 if (parse_strtoul(buf, 1, &t))
1353 return -EINVAL;
1354
1355 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
1356
1357 /* This is in the ABI... */
1358 if (tpacpi_rfk_check_hwblock_state() && !!t)
1359 return -EPERM;
1360
1361 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
1362 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
1363 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1364
1365 return (res < 0) ? res : count;
1366}
1367
1368/* procfs -------------------------------------------------------------- */
887965e6 1369static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m)
19d337df 1370{
19d337df 1371 if (id >= TPACPI_RFK_SW_MAX)
887965e6 1372 seq_printf(m, "status:\t\tnot supported\n");
19d337df
JB		 1373 else {
1374 int status;
1375
1376 /* This is in the ABI... */
1377 if (tpacpi_rfk_check_hwblock_state()) {
1378 status = TPACPI_RFK_RADIO_OFF;
1379 } else {
1380 status = tpacpi_rfk_update_swstate(
1381 tpacpi_rfkill_switches[id]);
1382 if (status < 0)
1383 return status;
1384 }
1385
887965e6 1386 seq_printf(m, "status:\t\t%s\n",
19d337df
JB		 1387 (status == TPACPI_RFK_RADIO_ON) ?
1388 "enabled" : "disabled");
887965e6 1389 seq_printf(m, "commands:\tenable, disable\n");
19d337df
JB		 1390 }
1391
887965e6 1392 return 0;
19d337df
JB		 1393}
1394
1395static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
1396{
1397 char *cmd;
1398 int status = -1;
1399 int res = 0;
1400
1401 if (id >= TPACPI_RFK_SW_MAX)
1402 return -ENODEV;
1403
1404 while ((cmd = next_cmd(&buf))) {
1405 if (strlencmp(cmd, "enable") == 0)
1406 status = TPACPI_RFK_RADIO_ON;
1407 else if (strlencmp(cmd, "disable") == 0)
1408 status = TPACPI_RFK_RADIO_OFF;
1409 else
1410 return -EINVAL;
1411 }
1412
1413 if (status != -1) {
1414 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
1415 (status == TPACPI_RFK_RADIO_ON) ?
1416 "enable" : "disable",
1417 tpacpi_rfkill_names[id]);
1418 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
1419 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
1420 }
1421
1422 return res;
1423}
1424
56b6aeb0 1425/*************************************************************************
b21a15f6 1426 * thinkpad-acpi driver attributes
56b6aeb0
HMH		 1427 */
1428
b21a15f6
HMH		 1429/* interface_version --------------------------------------------------- */
1430static ssize_t tpacpi_driver_interface_version_show(
1431 struct device_driver *drv,
1432 char *buf)
1da177e4 1433{
b21a15f6
HMH		 1434 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1435}
1436
1437static DRIVER_ATTR(interface_version, S_IRUGO,
1438 tpacpi_driver_interface_version_show, NULL);
1439
1440/* debug_level --------------------------------------------------------- */
1441static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1442 char *buf)
1443{
1444 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1445}
1446
1447static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1448 const char *buf, size_t count)
1449{
1450 unsigned long t;
1451
1452 if (parse_strtoul(buf, 0xffff, &t))
1453 return -EINVAL;
1454
1455 dbg_level = t;
1456
1457 return count;
1458}
1459
1460static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1461 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1462
1463/* version ------------------------------------------------------------- */
1464static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1465 char *buf)
1466{
35ff8b9f
HMH		 1467 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1468 TPACPI_DESC, TPACPI_VERSION);
b21a15f6
HMH		 1469}
1470
1471static DRIVER_ATTR(version, S_IRUGO,
1472 tpacpi_driver_version_show, NULL);
1473
1474/* --------------------------------------------------------------------- */
1475
a73f3091
HMH		 1476#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1477
a73f3091
HMH		 1478/* wlsw_emulstate ------------------------------------------------------ */
1479static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1480 char *buf)
1481{
1482 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1483}
1484
1485static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1486 const char *buf, size_t count)
1487{
1488 unsigned long t;
1489
1490 if (parse_strtoul(buf, 1, &t))
1491 return -EINVAL;
1492
19d337df 1493 if (tpacpi_wlsw_emulstate != !!t) {
a73f3091 1494 tpacpi_wlsw_emulstate = !!t;
19d337df
JB		 1495 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
1496 }
a73f3091
HMH		 1497
1498 return count;
1499}
1500
1501static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1502 tpacpi_driver_wlsw_emulstate_show,
1503 tpacpi_driver_wlsw_emulstate_store);
1504
1505/* bluetooth_emulstate ------------------------------------------------- */
1506static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1507 struct device_driver *drv,
1508 char *buf)
1509{
1510 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1511}
1512
1513static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1514 struct device_driver *drv,
1515 const char *buf, size_t count)
1516{
1517 unsigned long t;
1518
1519 if (parse_strtoul(buf, 1, &t))
1520 return -EINVAL;
1521
1522 tpacpi_bluetooth_emulstate = !!t;
1523
1524 return count;
1525}
1526
1527static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1528 tpacpi_driver_bluetooth_emulstate_show,
1529 tpacpi_driver_bluetooth_emulstate_store);
1530
1531/* wwan_emulstate ------------------------------------------------- */
1532static ssize_t tpacpi_driver_wwan_emulstate_show(
1533 struct device_driver *drv,
1534 char *buf)
1535{
1536 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1537}
1538
1539static ssize_t tpacpi_driver_wwan_emulstate_store(
1540 struct device_driver *drv,
1541 const char *buf, size_t count)
1542{
1543 unsigned long t;
1544
1545 if (parse_strtoul(buf, 1, &t))
1546 return -EINVAL;
1547
1548 tpacpi_wwan_emulstate = !!t;
1549
1550 return count;
1551}
1552
1553static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1554 tpacpi_driver_wwan_emulstate_show,
1555 tpacpi_driver_wwan_emulstate_store);
1556
0045c0aa
HMH		 1557/* uwb_emulstate ------------------------------------------------- */
1558static ssize_t tpacpi_driver_uwb_emulstate_show(
1559 struct device_driver *drv,
1560 char *buf)
1561{
1562 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1563}
1564
1565static ssize_t tpacpi_driver_uwb_emulstate_store(
1566 struct device_driver *drv,
1567 const char *buf, size_t count)
1568{
1569 unsigned long t;
1570
1571 if (parse_strtoul(buf, 1, &t))
1572 return -EINVAL;
1573
1574 tpacpi_uwb_emulstate = !!t;
1575
1576 return count;
1577}
1578
1579static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1580 tpacpi_driver_uwb_emulstate_show,
1581 tpacpi_driver_uwb_emulstate_store);
a73f3091
HMH		 1582#endif
1583
1584/* --------------------------------------------------------------------- */
1585
35ff8b9f 1586static struct driver_attribute *tpacpi_driver_attributes[] = {
b21a15f6
HMH		 1587 &driver_attr_debug_level, &driver_attr_version,
1588 &driver_attr_interface_version,
1589};
1590
1591static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1592{
1593 int i, res;
1594
1595 i = 0;
1596 res = 0;
1597 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1598 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1599 i++;
1600 }
1601
a73f3091
HMH		 1602#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1603 if (!res && dbg_wlswemul)
1604 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1605 if (!res && dbg_bluetoothemul)
1606 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1607 if (!res && dbg_wwanemul)
1608 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
0045c0aa
HMH		 1609 if (!res && dbg_uwbemul)
1610 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
a73f3091
HMH		 1611#endif
1612
b21a15f6
HMH		 1613 return res;
1614}
1615
1616static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1617{
1618 int i;
1619
35ff8b9f 1620 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
b21a15f6 1621 driver_remove_file(drv, tpacpi_driver_attributes[i]);
a73f3091
HMH		 1622
1623#ifdef THINKPAD_ACPI_DEBUGFACILITIES
1624 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1625 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1626 driver_remove_file(drv, &driver_attr_wwan_emulstate);
0045c0aa 1627 driver_remove_file(drv, &driver_attr_uwb_emulstate);
a73f3091 1628#endif
b21a15f6
HMH		 1629}
1630
600a99fa
HMH		 1631/*************************************************************************
1632 * Firmware Data
1633 */
1634
1635/*
1636 * Table of recommended minimum BIOS versions
1637 *
1638 * Reasons for listing:
9ddc5b6f 1639 * 1. Stable BIOS, listed because the unknown amount of
600a99fa
HMH		 1640 * bugs and bad ACPI behaviour on older versions
1641 *
1642 * 2. BIOS or EC fw with known bugs that trigger on Linux
1643 *
1644 * 3. BIOS with known reduced functionality in older versions
1645 *
1646 * We recommend the latest BIOS and EC version.
1647 * We only support the latest BIOS and EC fw version as a rule.
1648 *
1649 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1650 * Information from users in ThinkWiki
e675abaf
HMH		 1651 *
1652 * WARNING: we use this table also to detect that the machine is
1653 * a ThinkPad in some cases, so don't remove entries lightly.
600a99fa
HMH		 1654 */
1655
1656#define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1657 { .vendor = (__v), \
1658 .bios = TPID(__id1, __id2), \
1659 .ec = TPACPI_MATCH_ANY, \
1660 .quirks = TPACPI_MATCH_ANY << 16 \
1661 | (__bv1) << 8 | (__bv2) }
1662
1663#define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
275014ae 1664 __eid, __ev1, __ev2) \
600a99fa
HMH		 1665 { .vendor = (__v), \
1666 .bios = TPID(__bid1, __bid2), \
275014ae 1667 .ec = __eid, \
600a99fa
HMH		 1668 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1669 | (__bv1) << 8 | (__bv2) }
1670
1671#define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1672 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1673
275014ae 1674/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1675#define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1676 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
275014ae
HMH		 1677 __bv1, __bv2, TPID(__id1, __id2), \
1678 __ev1, __ev2), \
1679 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1680 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1681 __ev1, __ev2)
600a99fa 1682
275014ae 1683/* Outdated IBM BIOSes often lack the EC id string */
600a99fa
HMH		 1684#define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1685 __eid1, __eid2, __ev1, __ev2) \
1686 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
275014ae
HMH		 1687 __bv1, __bv2, TPID(__eid1, __eid2), \
1688 __ev1, __ev2), \
1689 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1690 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1691 __ev1, __ev2)
600a99fa
HMH		 1692
1693#define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1694 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1695
1696#define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1697 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
275014ae
HMH		 1698 __bv1, __bv2, TPID(__id1, __id2), \
1699 __ev1, __ev2)
600a99fa
HMH		 1700
1701#define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1702 __eid1, __eid2, __ev1, __ev2) \
1703 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
275014ae
HMH		 1704 __bv1, __bv2, TPID(__eid1, __eid2), \
1705 __ev1, __ev2)
600a99fa
HMH		 1706
1707static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1708 /* Numeric models ------------------ */
1709 /* FW MODEL BIOS VERS */
1710 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1711 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1712 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1713 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1714 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1715 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1716 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1717 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1718 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1719
1720 /* A-series ------------------------- */
1721 /* FW MODEL BIOS VERS EC VERS */
1722 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1723 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1724 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1725 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1726 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1727 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1728 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1729 TPV_QI0('1', '3', '2', '0'), /* A22m */
1730 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1731 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1732 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1733
1734 /* G-series ------------------------- */
1735 /* FW MODEL BIOS VERS */
1736 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1737 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1738
1739 /* R-series, T-series --------------- */
1740 /* FW MODEL BIOS VERS EC VERS */
1741 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1742 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1743 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1744 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1745 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1746 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1747 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1748 T40/p, T41/p, T42/p (1) */
1749 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1750 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1751 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1752 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1753
1754 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1755 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1756 TPV_QI0('1', '6', '3', '2'), /* T22 */
1757 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1758 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1759 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1760
1761 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1762 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
90765c6a 1763 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
600a99fa
HMH		 1764
1765 /* BIOS FW BIOS VERS EC FW EC VERS */
1766 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1767 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1768
1769 /* X-series ------------------------- */
1770 /* FW MODEL BIOS VERS EC VERS */
1771 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1772 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1773 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1774 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1775 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1776 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1777 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1778
90765c6a
HMH		 1779 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1780 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
600a99fa
HMH		 1781
1782 /* (0) - older versions lack DMI EC fw string and functionality */
1783 /* (1) - older versions known to lack functionality */
1784};
1785
1786#undef TPV_QL1
1787#undef TPV_QL0
1788#undef TPV_QI2
1789#undef TPV_QI1
1790#undef TPV_QI0
1791#undef TPV_Q_X
1792#undef TPV_Q
1793
1794static void __init tpacpi_check_outdated_fw(void)
1795{
1796 unsigned long fwvers;
1797 u16 ec_version, bios_version;
1798
1799 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1800 ARRAY_SIZE(tpacpi_bios_version_qtable));
1801
1802 if (!fwvers)
1803 return;
1804
1805 bios_version = fwvers & 0xffffU;
1806 ec_version = (fwvers >> 16) & 0xffffU;
1807
1808 /* note that unknown versions are set to 0x0000 and we use that */
1809 if ((bios_version > thinkpad_id.bios_release) ||
1810 (ec_version > thinkpad_id.ec_release &&
1811 ec_version != TPACPI_MATCH_ANY)) {
1812 /*
1813 * The changelogs would let us track down the exact
1814 * reason, but it is just too much of a pain to track
1815 * it. We only list BIOSes that are either really
1816 * broken, or really stable to begin with, so it is
1817 * best if the user upgrades the firmware anyway.
1818 */
0978e012
JP		 1819 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1820 pr_warn("WARNING: This firmware may be missing critical bug "
600a99fa
HMH		 1821 "fixes and/or important features\n");
1822 }
1823}
1824
e675abaf
HMH		 1825static bool __init tpacpi_is_fw_known(void)
1826{
1827 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1828 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1829}
1830
b21a15f6
HMH		 1831/****************************************************************************
1832 ****************************************************************************
1833 *
1834 * Subdrivers
1835 *
1836 ****************************************************************************
1837 ****************************************************************************/
1838
1839/*************************************************************************
7a43f788 1840 * thinkpad-acpi metadata subdriver
b21a15f6
HMH		 1841 */
1842
887965e6 1843static int thinkpad_acpi_driver_read(struct seq_file *m)
1da177e4 1844{
887965e6
AD		 1845 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
1846 seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
1847 return 0;
1da177e4
LT		 1848}
1849
a5763f22
HMH		 1850static struct ibm_struct thinkpad_acpi_driver_data = {
1851 .name = "driver",
1852 .read = thinkpad_acpi_driver_read,
1853};
1854
56b6aeb0
HMH		 1855/*************************************************************************
1856 * Hotkey subdriver
1857 */
1858
0d922e3b
HMH		 1859/*
1860 * ThinkPad firmware event model
1861 *
1862 * The ThinkPad firmware has two main event interfaces: normal ACPI
1863 * notifications (which follow the ACPI standard), and a private event
1864 * interface.
1865 *
1866 * The private event interface also issues events for the hotkeys. As
1867 * the driver gained features, the event handling code ended up being
1868 * built around the hotkey subdriver. This will need to be refactored
1869 * to a more formal event API eventually.
1870 *
1871 * Some "hotkeys" are actually supposed to be used as event reports,
1872 * such as "brightness has changed", "volume has changed", depending on
1873 * the ThinkPad model and how the firmware is operating.
1874 *
1875 * Unlike other classes, hotkey-class events have mask/unmask control on
1876 * non-ancient firmware. However, how it behaves changes a lot with the
1877 * firmware model and version.
1878 */
1879
f74a27d4
HMH		 1880enum { /* hot key scan codes (derived from ACPI DSDT) */
1881 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1882 TP_ACPI_HOTKEYSCAN_FNF2,
1883 TP_ACPI_HOTKEYSCAN_FNF3,
1884 TP_ACPI_HOTKEYSCAN_FNF4,
1885 TP_ACPI_HOTKEYSCAN_FNF5,
1886 TP_ACPI_HOTKEYSCAN_FNF6,
1887 TP_ACPI_HOTKEYSCAN_FNF7,
1888 TP_ACPI_HOTKEYSCAN_FNF8,
1889 TP_ACPI_HOTKEYSCAN_FNF9,
1890 TP_ACPI_HOTKEYSCAN_FNF10,
1891 TP_ACPI_HOTKEYSCAN_FNF11,
1892 TP_ACPI_HOTKEYSCAN_FNF12,
1893 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1894 TP_ACPI_HOTKEYSCAN_FNINSERT,
1895 TP_ACPI_HOTKEYSCAN_FNDELETE,
1896 TP_ACPI_HOTKEYSCAN_FNHOME,
1897 TP_ACPI_HOTKEYSCAN_FNEND,
1898 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1899 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1900 TP_ACPI_HOTKEYSCAN_FNSPACE,
1901 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1902 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1903 TP_ACPI_HOTKEYSCAN_MUTE,
1904 TP_ACPI_HOTKEYSCAN_THINKPAD,
34a656d2
HMH		 1905 TP_ACPI_HOTKEYSCAN_UNK1,
1906 TP_ACPI_HOTKEYSCAN_UNK2,
1907 TP_ACPI_HOTKEYSCAN_UNK3,
1908 TP_ACPI_HOTKEYSCAN_UNK4,
1909 TP_ACPI_HOTKEYSCAN_UNK5,
1910 TP_ACPI_HOTKEYSCAN_UNK6,
1911 TP_ACPI_HOTKEYSCAN_UNK7,
1912 TP_ACPI_HOTKEYSCAN_UNK8,
1913
1914 /* Hotkey keymap size */
1915 TPACPI_HOTKEY_MAP_LEN
f74a27d4
HMH		 1916};
1917
0d922e3b 1918enum { /* Keys/events available through NVRAM polling */
01e88f25
HMH		 1919 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1920 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1921};
1922
1923enum { /* Positions of some of the keys in hotkey masks */
1924 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1925 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1926 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1927 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1928 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1929 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1930 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1931 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1932 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1933 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1934 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1935};
1936
1937enum { /* NVRAM to ACPI HKEY group map */
1938 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1939 TP_ACPI_HKEY_ZOOM_MASK |
1940 TP_ACPI_HKEY_DISPSWTCH_MASK |
1941 TP_ACPI_HKEY_HIBERNATE_MASK,
1942 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1943 TP_ACPI_HKEY_BRGHTDWN_MASK,
1944 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1945 TP_ACPI_HKEY_VOLDWN_MASK |
1946 TP_ACPI_HKEY_MUTE_MASK,
1947};
1948
1949#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1950struct tp_nvram_state {
1951 u16 thinkpad_toggle:1;
1952 u16 zoom_toggle:1;
1953 u16 display_toggle:1;
1954 u16 thinklight_toggle:1;
1955 u16 hibernate_toggle:1;
1956 u16 displayexp_toggle:1;
1957 u16 display_state:1;
1958 u16 brightness_toggle:1;
1959 u16 volume_toggle:1;
1960 u16 mute:1;
1961
1962 u8 brightness_level;
1963 u8 volume_level;
1964};
1965
db25f16d 1966/* kthread for the hotkey poller */
01e88f25 1967static struct task_struct *tpacpi_hotkey_task;
db25f16d 1968
db25f16d 1969/*
0d922e3b
HMH		 1970 * Acquire mutex to write poller control variables as an
1971 * atomic block.
1972 *
1973 * Increment hotkey_config_change when changing them if you
1974 * want the kthread to forget old state.
db25f16d
HMH		 1975 *
1976 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1977 */
01e88f25
HMH		 1978static struct mutex hotkey_thread_data_mutex;
1979static unsigned int hotkey_config_change;
1980
db25f16d
HMH		 1981/*
1982 * hotkey poller control variables
1983 *
1984 * Must be atomic or readers will also need to acquire mutex
0d922e3b
HMH		 1985 *
1986 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1987 * should be used only when the changes need to be taken as
1988 * a block, OR when one needs to force the kthread to forget
1989 * old state.
db25f16d
HMH		 1990 */
1991static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1992static unsigned int hotkey_poll_freq = 10; /* Hz */
1993
1994#define HOTKEY_CONFIG_CRITICAL_START \
1995 do { \
1996 mutex_lock(&hotkey_thread_data_mutex); \
1997 hotkey_config_change++; \
1998 } while (0);
1999#define HOTKEY_CONFIG_CRITICAL_END \
2000 mutex_unlock(&hotkey_thread_data_mutex);
2001
01e88f25
HMH		 2002#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2003
2004#define hotkey_source_mask 0U
db25f16d
HMH		 2005#define HOTKEY_CONFIG_CRITICAL_START
2006#define HOTKEY_CONFIG_CRITICAL_END
01e88f25
HMH		 2007
2008#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2009
f74a27d4
HMH		 2010static struct mutex hotkey_mutex;
2011
a713b4d7
HMH		 2012static enum { /* Reasons for waking up */
2013 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
2014 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
2015 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
2016} hotkey_wakeup_reason;
2017
2018static int hotkey_autosleep_ack;
2019
0d922e3b
HMH		 2020static u32 hotkey_orig_mask; /* events the BIOS had enabled */
2021static u32 hotkey_all_mask; /* all events supported in fw */
2022static u32 hotkey_reserved_mask; /* events better left disabled */
2023static u32 hotkey_driver_mask; /* events needed by the driver */
2024static u32 hotkey_user_mask; /* events visible to userspace */
2025static u32 hotkey_acpi_mask; /* events enabled in firmware */
6a38abbf 2026
edf0e0e5 2027static u16 *hotkey_keycode_map;
78f81cc4 2028
94954cc6 2029static struct attribute_set *hotkey_dev_attributes;
a0416420 2030
8b468c0c
HMH		 2031static void tpacpi_driver_event(const unsigned int hkey_event);
2032static void hotkey_driver_event(const unsigned int scancode);
7f0cf712 2033static void hotkey_poll_setup(const bool may_warn);
8b468c0c 2034
6c231bd5
HMH		 2035/* HKEY.MHKG() return bits */
2036#define TP_HOTKEY_TABLET_MASK (1 << 3)
2037
19d337df 2038static int hotkey_get_wlsw(void)
74941a69 2039{
19d337df
JB		 2040 int status;
2041
2042 if (!tp_features.hotkey_wlsw)
2043 return -ENODEV;
2044
a73f3091 2045#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
19d337df
JB		 2046 if (dbg_wlswemul)
2047 return (tpacpi_wlsw_emulstate) ?
2048 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091 2049#endif
19d337df
JB		 2050
2051 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
74941a69 2052 return -EIO;
19d337df
JB		 2053
2054 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
74941a69
HMH		 2055}
2056
6c231bd5
HMH		 2057static int hotkey_get_tablet_mode(int *status)
2058{
2059 int s;
2060
2061 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
2062 return -EIO;
2063
cee47f5a
HMH		 2064 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
2065 return 0;
6c231bd5
HMH		 2066}
2067
b2c985e7 2068/*
0d922e3b
HMH		 2069 * Reads current event mask from firmware, and updates
2070 * hotkey_acpi_mask accordingly. Also resets any bits
2071 * from hotkey_user_mask that are unavailable to be
2072 * delivered (shadow requirement of the userspace ABI).
2073 *
b2c985e7
HMH		 2074 * Call with hotkey_mutex held
2075 */
2076static int hotkey_mask_get(void)
2077{
2078 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 2079 u32 m = 0;
2080
01e88f25 2081 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
b2c985e7 2082 return -EIO;
0d922e3b
HMH		 2083
2084 hotkey_acpi_mask = m;
2085 } else {
2086 /* no mask support doesn't mean no event support... */
2087 hotkey_acpi_mask = hotkey_all_mask;
b2c985e7 2088 }
0d922e3b
HMH		 2089
2090 /* sync userspace-visible mask */
2091 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
b2c985e7
HMH		 2092
2093 return 0;
2094}
2095
0d922e3b
HMH		 2096void static hotkey_mask_warn_incomplete_mask(void)
2097{
2098 /* log only what the user can fix... */
2099 const u32 wantedmask = hotkey_driver_mask &
2100 ~(hotkey_acpi_mask | hotkey_source_mask) &
2101 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
2102
2103 if (wantedmask)
0978e012 2104 pr_notice("required events 0x%08x not enabled!\n", wantedmask);
0d922e3b
HMH		 2105}
2106
b2c985e7 2107/*
0d922e3b
HMH		 2108 * Set the firmware mask when supported
2109 *
2110 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
2111 *
2112 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
2113 *
b2c985e7
HMH		 2114 * Call with hotkey_mutex held
2115 */
2116static int hotkey_mask_set(u32 mask)
2117{
2118 int i;
2119 int rc = 0;
2120
0d922e3b 2121 const u32 fwmask = mask & ~hotkey_source_mask;
92889022 2122
0d922e3b 2123 if (tp_features.hotkey_mask) {
b2c985e7 2124 for (i = 0; i < 32; i++) {
b2c985e7
HMH		 2125 if (!acpi_evalf(hkey_handle,
2126 NULL, "MHKM", "vdd", i + 1,
0d922e3b 2127 !!(mask & (1 << i)))) {
b2c985e7
HMH		 2128 rc = -EIO;
2129 break;
b2c985e7
HMH		 2130 }
2131 }
0d922e3b 2132 }
b2c985e7 2133
0d922e3b
HMH		 2134 /*
2135 * We *must* make an inconditional call to hotkey_mask_get to
2136 * refresh hotkey_acpi_mask and update hotkey_user_mask
2137 *
2138 * Take the opportunity to also log when we cannot _enable_
2139 * a given event.
2140 */
2141 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
0978e012
JP		 2142 pr_notice("asked for hotkey mask 0x%08x, but "
2143 "firmware forced it to 0x%08x\n",
2144 fwmask, hotkey_acpi_mask);
b2c985e7
HMH		 2145 }
2146
6b30eb7d
HMH		 2147 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
2148 hotkey_mask_warn_incomplete_mask();
0d922e3b
HMH		 2149
2150 return rc;
2151}
2152
2153/*
2154 * Sets hotkey_user_mask and tries to set the firmware mask
2155 *
2156 * Call with hotkey_mutex held
2157 */
2158static int hotkey_user_mask_set(const u32 mask)
2159{
2160 int rc;
2161
2162 /* Give people a chance to notice they are doing something that
2163 * is bound to go boom on their users sooner or later */
2164 if (!tp_warned.hotkey_mask_ff &&
2165 (mask == 0xffff || mask == 0xffffff ||
2166 mask == 0xffffffff)) {
2167 tp_warned.hotkey_mask_ff = 1;
0978e012
JP		 2168 pr_notice("setting the hotkey mask to 0x%08x is likely "
2169 "not the best way to go about it\n", mask);
2170 pr_notice("please consider using the driver defaults, "
2171 "and refer to up-to-date thinkpad-acpi "
2172 "documentation\n");
0d922e3b
HMH		 2173 }
2174
2175 /* Try to enable what the user asked for, plus whatever we need.
2176 * this syncs everything but won't enable bits in hotkey_user_mask */
2177 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
2178
2179 /* Enable the available bits in hotkey_user_mask */
2180 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
2181
b2c985e7
HMH		 2182 return rc;
2183}
2184
8b468c0c
HMH		 2185/*
2186 * Sets the driver hotkey mask.
2187 *
2188 * Can be called even if the hotkey subdriver is inactive
2189 */
2190static int tpacpi_hotkey_driver_mask_set(const u32 mask)
2191{
2192 int rc;
2193
2194 /* Do the right thing if hotkey_init has not been called yet */
2195 if (!tp_features.hotkey) {
2196 hotkey_driver_mask = mask;
2197 return 0;
2198 }
2199
2200 mutex_lock(&hotkey_mutex);
2201
2202 HOTKEY_CONFIG_CRITICAL_START
2203 hotkey_driver_mask = mask;
b684a363 2204#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
8b468c0c 2205 hotkey_source_mask |= (mask & ~hotkey_all_mask);
b684a363 2206#endif
8b468c0c
HMH		 2207 HOTKEY_CONFIG_CRITICAL_END
2208
2209 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2210 ~hotkey_source_mask);
7f0cf712
HMH		 2211 hotkey_poll_setup(true);
2212
8b468c0c
HMH		 2213 mutex_unlock(&hotkey_mutex);
2214
2215 return rc;
2216}
2217
b2c985e7
HMH		 2218static int hotkey_status_get(int *status)
2219{
2220 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2221 return -EIO;
2222
2223 return 0;
2224}
2225
2586d566 2226static int hotkey_status_set(bool enable)
b2c985e7 2227{
2586d566 2228 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
b2c985e7
HMH		 2229 return -EIO;
2230
2231 return 0;
2232}
2233
6c231bd5 2234static void tpacpi_input_send_tabletsw(void)
b3ec6f91 2235{
6c231bd5 2236 int state;
b3ec6f91 2237
6c231bd5
HMH		 2238 if (tp_features.hotkey_tablet &&
2239 !hotkey_get_tablet_mode(&state)) {
2240 mutex_lock(&tpacpi_inputdev_send_mutex);
b3ec6f91 2241
6c231bd5
HMH		 2242 input_report_switch(tpacpi_inputdev,
2243 SW_TABLET_MODE, !!state);
2244 input_sync(tpacpi_inputdev);
2245
2246 mutex_unlock(&tpacpi_inputdev_send_mutex);
2247 }
b3ec6f91
HMH		 2248}
2249
0d922e3b
HMH		 2250/* Do NOT call without validating scancode first */
2251static void tpacpi_input_send_key(const unsigned int scancode)
b7c8c200 2252{
0d922e3b 2253 const unsigned int keycode = hotkey_keycode_map[scancode];
b7c8c200
HMH		 2254
2255 if (keycode != KEY_RESERVED) {
2256 mutex_lock(&tpacpi_inputdev_send_mutex);
2257
5ffba7e6 2258 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2259 input_report_key(tpacpi_inputdev, keycode, 1);
b7c8c200
HMH		 2260 input_sync(tpacpi_inputdev);
2261
5ffba7e6 2262 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode);
b7c8c200 2263 input_report_key(tpacpi_inputdev, keycode, 0);
b7c8c200
HMH		 2264 input_sync(tpacpi_inputdev);
2265
2266 mutex_unlock(&tpacpi_inputdev_send_mutex);
2267 }
2268}
2269
0d922e3b
HMH		 2270/* Do NOT call without validating scancode first */
2271static void tpacpi_input_send_key_masked(const unsigned int scancode)
2272{
8b468c0c 2273 hotkey_driver_event(scancode);
0d922e3b
HMH		 2274 if (hotkey_user_mask & (1 << scancode))
2275 tpacpi_input_send_key(scancode);
2276}
2277
01e88f25
HMH		 2278#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2279static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2280
0d922e3b 2281/* Do NOT call without validating scancode first */
01e88f25
HMH		 2282static void tpacpi_hotkey_send_key(unsigned int scancode)
2283{
0d922e3b 2284 tpacpi_input_send_key_masked(scancode);
01e88f25
HMH		 2285}
2286
0d922e3b 2287static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
01e88f25
HMH		 2288{
2289 u8 d;
2290
2291 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2292 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2293 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2294 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2295 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2296 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2297 }
2298 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
2299 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2300 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2301 }
2302 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2303 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2304 n->displayexp_toggle =
2305 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2306 }
2307 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2308 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2309 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2310 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2311 n->brightness_toggle =
2312 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2313 }
2314 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2315 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2316 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2317 >> TP_NVRAM_POS_LEVEL_VOLUME;
2318 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2319 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2320 }
2321}
2322
2323#define TPACPI_COMPARE_KEY(__scancode, __member) \
a4d44ba1
BW		 2324do { \
2325 if ((event_mask & (1 << __scancode)) && \
2326 oldn->__member != newn->__member) \
2327 tpacpi_hotkey_send_key(__scancode); \
2328} while (0)
01e88f25
HMH		 2329
2330#define TPACPI_MAY_SEND_KEY(__scancode) \
a4d44ba1
BW		 2331do { \
2332 if (event_mask & (1 << __scancode)) \
2333 tpacpi_hotkey_send_key(__scancode); \
2334} while (0)
2335
2336static void issue_volchange(const unsigned int oldvol,
2337 const unsigned int newvol,
2338 const u32 event_mask)
2339{
2340 unsigned int i = oldvol;
2341
2342 while (i > newvol) {
2343 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2344 i--;
5d756db9 2345 }
a4d44ba1
BW		 2346 while (i < newvol) {
2347 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2348 i++;
2349 }
2350}
5d756db9 2351
a4d44ba1
BW		 2352static void issue_brightnesschange(const unsigned int oldbrt,
2353 const unsigned int newbrt,
2354 const u32 event_mask)
2355{
2356 unsigned int i = oldbrt;
28999022 2357
a4d44ba1
BW		 2358 while (i > newbrt) {
2359 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2360 i--;
28999022 2361 }
a4d44ba1
BW		 2362 while (i < newbrt) {
2363 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2364 i++;
2365 }
2366}
2367
2368static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2369 struct tp_nvram_state *newn,
2370 const u32 event_mask)
2371{
28999022 2372
01e88f25
HMH		 2373 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2374 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2375 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2376 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2377
2378 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2379
2380 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2381
5d756db9
HMH		 2382 /*
2383 * Handle volume
2384 *
2385 * This code is supposed to duplicate the IBM firmware behaviour:
2386 * - Pressing MUTE issues mute hotkey message, even when already mute
2387 * - Pressing Volume up/down issues volume up/down hotkey messages,
c8440336 2388 * even when already at maximum or minimum volume
5d756db9
HMH		 2389 * - The act of unmuting issues volume up/down notification,
2390 * depending which key was used to unmute
2391 *
2392 * We are constrained to what the NVRAM can tell us, which is not much
2393 * and certainly not enough if more than one volume hotkey was pressed
2394 * since the last poll cycle.
2395 *
2396 * Just to make our life interesting, some newer Lenovo ThinkPads have
2397 * bugs in the BIOS and may fail to update volume_toggle properly.
2398 */
2399 if (newn->mute) {
2400 /* muted */
2401 if (!oldn->mute ||
2402 oldn->volume_toggle != newn->volume_toggle ||
2403 oldn->volume_level != newn->volume_level) {
2404 /* recently muted, or repeated mute keypress, or
2405 * multiple presses ending in mute */
a4d44ba1
BW		 2406 issue_volchange(oldn->volume_level, newn->volume_level,
2407 event_mask);
01e88f25
HMH		 2408 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2409 }
5d756db9
HMH		 2410 } else {
2411 /* unmute */
2412 if (oldn->mute) {
2413 /* recently unmuted, issue 'unmute' keypress */
01e88f25 2414 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
5d756db9
HMH		 2415 }
2416 if (oldn->volume_level != newn->volume_level) {
a4d44ba1
BW		 2417 issue_volchange(oldn->volume_level, newn->volume_level,
2418 event_mask);
5d756db9
HMH		 2419 } else if (oldn->volume_toggle != newn->volume_toggle) {
2420 /* repeated vol up/down keypress at end of scale ? */
2421 if (newn->volume_level == 0)
01e88f25 2422 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
5d756db9
HMH		 2423 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX)
2424 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
01e88f25
HMH		 2425 }
2426 }
2427
2428 /* handle brightness */
28999022
HMH		 2429 if (oldn->brightness_level != newn->brightness_level) {
2430 issue_brightnesschange(oldn->brightness_level,
a4d44ba1 2431 newn->brightness_level, event_mask);
28999022
HMH		 2432 } else if (oldn->brightness_toggle != newn->brightness_toggle) {
2433 /* repeated key presses that didn't change state */
2434 if (newn->brightness_level == 0)
01e88f25 2435 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
28999022
HMH		 2436 else if (newn->brightness_level >= bright_maxlvl
2437 && !tp_features.bright_unkfw)
2438 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
01e88f25 2439 }
01e88f25
HMH		 2440
2441#undef TPACPI_COMPARE_KEY
2442#undef TPACPI_MAY_SEND_KEY
0d922e3b 2443}
01e88f25 2444
0d922e3b
HMH		 2445/*
2446 * Polling driver
2447 *
2448 * We track all events in hotkey_source_mask all the time, since
2449 * most of them are edge-based. We only issue those requested by
2450 * hotkey_user_mask or hotkey_driver_mask, though.
2451 */
01e88f25
HMH		 2452static int hotkey_kthread(void *data)
2453{
2454 struct tp_nvram_state s[2];
0d922e3b 2455 u32 poll_mask, event_mask;
01e88f25
HMH		 2456 unsigned int si, so;
2457 unsigned long t;
8a32c441 2458 unsigned int change_detector;
db25f16d 2459 unsigned int poll_freq;
8a32c441 2460 bool was_frozen;
01e88f25 2461
01e88f25
HMH		 2462 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2463 goto exit;
2464
2465 set_freezable();
2466
2467 so = 0;
2468 si = 1;
2469 t = 0;
2470
2471 /* Initial state for compares */
2472 mutex_lock(&hotkey_thread_data_mutex);
2473 change_detector = hotkey_config_change;
0d922e3b
HMH		 2474 poll_mask = hotkey_source_mask;
2475 event_mask = hotkey_source_mask &
2476 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2477 poll_freq = hotkey_poll_freq;
01e88f25 2478 mutex_unlock(&hotkey_thread_data_mutex);
0d922e3b 2479 hotkey_read_nvram(&s[so], poll_mask);
01e88f25 2480
db25f16d
HMH		 2481 while (!kthread_should_stop()) {
2482 if (t == 0) {
2483 if (likely(poll_freq))
2484 t = 1000/poll_freq;
2485 else
2486 t = 100; /* should never happen... */
2487 }
01e88f25 2488 t = msleep_interruptible(t);
8a32c441 2489 if (unlikely(kthread_freezable_should_stop(&was_frozen)))
01e88f25 2490 break;
8a32c441
TH		 2491
2492 if (t > 0 && !was_frozen)
01e88f25
HMH		 2493 continue;
2494
2495 mutex_lock(&hotkey_thread_data_mutex);
8a32c441 2496 if (was_frozen || hotkey_config_change != change_detector) {
01e88f25
HMH		 2497 /* forget old state on thaw or config change */
2498 si = so;
2499 t = 0;
2500 change_detector = hotkey_config_change;
2501 }
0d922e3b
HMH		 2502 poll_mask = hotkey_source_mask;
2503 event_mask = hotkey_source_mask &
2504 (hotkey_driver_mask | hotkey_user_mask);
db25f16d 2505 poll_freq = hotkey_poll_freq;
01e88f25
HMH		 2506 mutex_unlock(&hotkey_thread_data_mutex);
2507
0d922e3b
HMH		 2508 if (likely(poll_mask)) {
2509 hotkey_read_nvram(&s[si], poll_mask);
01e88f25
HMH		 2510 if (likely(si != so)) {
2511 hotkey_compare_and_issue_event(&s[so], &s[si],
0d922e3b 2512 event_mask);
01e88f25
HMH		 2513 }
2514 }
2515
2516 so = si;
2517 si ^= 1;
2518 }
2519
2520exit:
01e88f25
HMH		 2521 return 0;
2522}
2523
db25f16d 2524/* call with hotkey_mutex held */
01e88f25
HMH		 2525static void hotkey_poll_stop_sync(void)
2526{
2527 if (tpacpi_hotkey_task) {
01e88f25
HMH		 2528 kthread_stop(tpacpi_hotkey_task);
2529 tpacpi_hotkey_task = NULL;
01e88f25
HMH		 2530 }
2531}
2532
2533/* call with hotkey_mutex held */
7f0cf712 2534static void hotkey_poll_setup(const bool may_warn)
01e88f25 2535{
0d922e3b
HMH		 2536 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2537 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
db25f16d 2538
0d922e3b
HMH		 2539 if (hotkey_poll_freq > 0 &&
2540 (poll_driver_mask ||
2541 (poll_user_mask && tpacpi_inputdev->users > 0))) {
01e88f25
HMH		 2542 if (!tpacpi_hotkey_task) {
2543 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
95e57ab2 2544 NULL, TPACPI_NVRAM_KTHREAD_NAME);
01e88f25
HMH		 2545 if (IS_ERR(tpacpi_hotkey_task)) {
2546 tpacpi_hotkey_task = NULL;
0978e012 2547 pr_err("could not create kernel thread "
01e88f25
HMH		 2548 "for hotkey polling\n");
2549 }
2550 }
2551 } else {
2552 hotkey_poll_stop_sync();
0d922e3b 2553 if (may_warn && (poll_driver_mask || poll_user_mask) &&
db25f16d 2554 hotkey_poll_freq == 0) {
0978e012
JP		 2555 pr_notice("hot keys 0x%08x and/or events 0x%08x "
2556 "require polling, which is currently "
2557 "disabled\n",
2558 poll_user_mask, poll_driver_mask);
01e88f25
HMH		 2559 }
2560 }
2561}
2562
7f0cf712 2563static void hotkey_poll_setup_safe(const bool may_warn)
01e88f25
HMH		 2564{
2565 mutex_lock(&hotkey_mutex);
2566 hotkey_poll_setup(may_warn);
2567 mutex_unlock(&hotkey_mutex);
2568}
2569
db25f16d
HMH		 2570/* call with hotkey_mutex held */
2571static void hotkey_poll_set_freq(unsigned int freq)
2572{
2573 if (!freq)
2574 hotkey_poll_stop_sync();
2575
db25f16d 2576 hotkey_poll_freq = freq;
db25f16d
HMH		 2577}
2578
1bc6b9cd
HMH		 2579#else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2580
7f0cf712
HMH		 2581static void hotkey_poll_setup(const bool __unused)
2582{
2583}
2584
2585static void hotkey_poll_setup_safe(const bool __unused)
1bc6b9cd
HMH		 2586{
2587}
2588
2589#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2590
01e88f25
HMH		 2591static int hotkey_inputdev_open(struct input_dev *dev)
2592{
2593 switch (tpacpi_lifecycle) {
2594 case TPACPI_LIFE_INIT:
01e88f25 2595 case TPACPI_LIFE_RUNNING:
db25f16d 2596 hotkey_poll_setup_safe(false);
01e88f25 2597 return 0;
b589ea4c
HMH		 2598 case TPACPI_LIFE_EXITING:
2599 return -EBUSY;
01e88f25
HMH		 2600 }
2601
2602 /* Should only happen if tpacpi_lifecycle is corrupt */
2603 BUG();
2604 return -EBUSY;
2605}
2606
2607static void hotkey_inputdev_close(struct input_dev *dev)
2608{
2609 /* disable hotkey polling when possible */
b589ea4c 2610 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING &&
0d922e3b 2611 !(hotkey_source_mask & hotkey_driver_mask))
db25f16d 2612 hotkey_poll_setup_safe(false);
01e88f25 2613}
01e88f25 2614
a0416420
HMH		 2615/* sysfs hotkey enable ------------------------------------------------- */
2616static ssize_t hotkey_enable_show(struct device *dev,
2617 struct device_attribute *attr,
2618 char *buf)
2619{
ae92bd17 2620 int res, status;
a0416420 2621
2586d566
HMH		 2622 printk_deprecated_attribute("hotkey_enable",
2623 "Hotkey reporting is always enabled");
2624
b2c985e7 2625 res = hotkey_status_get(&status);
a0416420
HMH		 2626 if (res)
2627 return res;
2628
2629 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2630}
2631
2632static ssize_t hotkey_enable_store(struct device *dev,
2633 struct device_attribute *attr,
2634 const char *buf, size_t count)
2635{
2636 unsigned long t;
2586d566
HMH		 2637
2638 printk_deprecated_attribute("hotkey_enable",
2639 "Hotkeys can be disabled through hotkey_mask");
a0416420
HMH		 2640
2641 if (parse_strtoul(buf, 1, &t))
2642 return -EINVAL;
2643
2586d566
HMH		 2644 if (t == 0)
2645 return -EPERM;
a0416420 2646
2586d566 2647 return count;
a0416420
HMH		 2648}
2649
2650static struct device_attribute dev_attr_hotkey_enable =
cc4c24e1 2651 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
a0416420
HMH		 2652 hotkey_enable_show, hotkey_enable_store);
2653
2654/* sysfs hotkey mask --------------------------------------------------- */
2655static ssize_t hotkey_mask_show(struct device *dev,
2656 struct device_attribute *attr,
2657 char *buf)
2658{
0d922e3b 2659 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
a0416420
HMH		 2660}
2661
2662static ssize_t hotkey_mask_store(struct device *dev,
2663 struct device_attribute *attr,
2664 const char *buf, size_t count)
2665{
2666 unsigned long t;
b2c985e7 2667 int res;
a0416420 2668
ae92bd17 2669 if (parse_strtoul(buf, 0xffffffffUL, &t))
a0416420
HMH		 2670 return -EINVAL;
2671
7646ea88 2672 if (mutex_lock_killable(&hotkey_mutex))
b2c985e7
HMH		 2673 return -ERESTARTSYS;
2674
0d922e3b 2675 res = hotkey_user_mask_set(t);
01e88f25
HMH		 2676
2677#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2678 hotkey_poll_setup(true);
01e88f25
HMH		 2679#endif
2680
b2c985e7 2681 mutex_unlock(&hotkey_mutex);
a0416420 2682
56e2c200
HMH		 2683 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2684
a0416420
HMH		 2685 return (res) ? res : count;
2686}
2687
2688static struct device_attribute dev_attr_hotkey_mask =
cc4c24e1 2689 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
a0416420
HMH		 2690 hotkey_mask_show, hotkey_mask_store);
2691
2692/* sysfs hotkey bios_enabled ------------------------------------------- */
2693static ssize_t hotkey_bios_enabled_show(struct device *dev,
2694 struct device_attribute *attr,
2695 char *buf)
2696{
2586d566 2697 return sprintf(buf, "0\n");
a0416420
HMH		 2698}
2699
2700static struct device_attribute dev_attr_hotkey_bios_enabled =
cc4c24e1 2701 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
a0416420
HMH		 2702
2703/* sysfs hotkey bios_mask ---------------------------------------------- */
2704static ssize_t hotkey_bios_mask_show(struct device *dev,
2705 struct device_attribute *attr,
2706 char *buf)
2707{
06777be6
HMH		 2708 printk_deprecated_attribute("hotkey_bios_mask",
2709 "This attribute is useless.");
ae92bd17 2710 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
a0416420
HMH		 2711}
2712
2713static struct device_attribute dev_attr_hotkey_bios_mask =
cc4c24e1 2714 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
a0416420 2715
9b010de5
HMH		 2716/* sysfs hotkey all_mask ----------------------------------------------- */
2717static ssize_t hotkey_all_mask_show(struct device *dev,
2718 struct device_attribute *attr,
2719 char *buf)
2720{
01e88f25
HMH		 2721 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2722 hotkey_all_mask | hotkey_source_mask);
9b010de5
HMH		 2723}
2724
2725static struct device_attribute dev_attr_hotkey_all_mask =
2726 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2727
2728/* sysfs hotkey recommended_mask --------------------------------------- */
2729static ssize_t hotkey_recommended_mask_show(struct device *dev,
2730 struct device_attribute *attr,
2731 char *buf)
2732{
2733 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
01e88f25
HMH		 2734 (hotkey_all_mask | hotkey_source_mask)
2735 & ~hotkey_reserved_mask);
9b010de5
HMH		 2736}
2737
2738static struct device_attribute dev_attr_hotkey_recommended_mask =
2739 __ATTR(hotkey_recommended_mask, S_IRUGO,
2740 hotkey_recommended_mask_show, NULL);
2741
01e88f25
HMH		 2742#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2743
2744/* sysfs hotkey hotkey_source_mask ------------------------------------- */
2745static ssize_t hotkey_source_mask_show(struct device *dev,
2746 struct device_attribute *attr,
2747 char *buf)
2748{
2749 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2750}
2751
2752static ssize_t hotkey_source_mask_store(struct device *dev,
2753 struct device_attribute *attr,
2754 const char *buf, size_t count)
2755{
2756 unsigned long t;
0d922e3b
HMH		 2757 u32 r_ev;
2758 int rc;
01e88f25
HMH		 2759
2760 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2761 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2762 return -EINVAL;
2763
7646ea88 2764 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2765 return -ERESTARTSYS;
2766
2767 HOTKEY_CONFIG_CRITICAL_START
2768 hotkey_source_mask = t;
2769 HOTKEY_CONFIG_CRITICAL_END
2770
0d922e3b
HMH		 2771 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2772 ~hotkey_source_mask);
db25f16d 2773 hotkey_poll_setup(true);
0d922e3b
HMH		 2774
2775 /* check if events needed by the driver got disabled */
2776 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2777 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
01e88f25
HMH		 2778
2779 mutex_unlock(&hotkey_mutex);
2780
0d922e3b 2781 if (rc < 0)
0978e012
JP		 2782 pr_err("hotkey_source_mask: "
2783 "failed to update the firmware event mask!\n");
0d922e3b
HMH		 2784
2785 if (r_ev)
0978e012
JP		 2786 pr_notice("hotkey_source_mask: "
2787 "some important events were disabled: 0x%04x\n",
2788 r_ev);
0d922e3b 2789
56e2c200
HMH		 2790 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2791
0d922e3b 2792 return (rc < 0) ? rc : count;
01e88f25
HMH		 2793}
2794
2795static struct device_attribute dev_attr_hotkey_source_mask =
2796 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2797 hotkey_source_mask_show, hotkey_source_mask_store);
2798
2799/* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2800static ssize_t hotkey_poll_freq_show(struct device *dev,
2801 struct device_attribute *attr,
2802 char *buf)
2803{
2804 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2805}
2806
2807static ssize_t hotkey_poll_freq_store(struct device *dev,
2808 struct device_attribute *attr,
2809 const char *buf, size_t count)
2810{
2811 unsigned long t;
2812
2813 if (parse_strtoul(buf, 25, &t))
2814 return -EINVAL;
2815
7646ea88 2816 if (mutex_lock_killable(&hotkey_mutex))
01e88f25
HMH		 2817 return -ERESTARTSYS;
2818
db25f16d
HMH		 2819 hotkey_poll_set_freq(t);
2820 hotkey_poll_setup(true);
01e88f25 2821
01e88f25
HMH		 2822 mutex_unlock(&hotkey_mutex);
2823
56e2c200
HMH		 2824 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2825
01e88f25
HMH		 2826 return count;
2827}
2828
2829static struct device_attribute dev_attr_hotkey_poll_freq =
2830 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2831 hotkey_poll_freq_show, hotkey_poll_freq_store);
2832
2833#endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2834
50ebec09 2835/* sysfs hotkey radio_sw (pollable) ------------------------------------ */
74941a69
HMH		 2836static ssize_t hotkey_radio_sw_show(struct device *dev,
2837 struct device_attribute *attr,
2838 char *buf)
2839{
19d337df
JB		 2840 int res;
2841 res = hotkey_get_wlsw();
74941a69
HMH		 2842 if (res < 0)
2843 return res;
2844
19d337df
JB		 2845 /* Opportunistic update */
2846 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
2847
2848 return snprintf(buf, PAGE_SIZE, "%d\n",
2849 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
74941a69
HMH		 2850}
2851
2852static struct device_attribute dev_attr_hotkey_radio_sw =
2853 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2854
50ebec09
HMH		 2855static void hotkey_radio_sw_notify_change(void)
2856{
2857 if (tp_features.hotkey_wlsw)
2858 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2859 "hotkey_radio_sw");
2860}
2861
6c231bd5
HMH		 2862/* sysfs hotkey tablet mode (pollable) --------------------------------- */
2863static ssize_t hotkey_tablet_mode_show(struct device *dev,
2864 struct device_attribute *attr,
2865 char *buf)
2866{
2867 int res, s;
2868 res = hotkey_get_tablet_mode(&s);
2869 if (res < 0)
2870 return res;
2871
2872 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2873}
2874
2875static struct device_attribute dev_attr_hotkey_tablet_mode =
2876 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2877
2878static void hotkey_tablet_mode_notify_change(void)
2879{
2880 if (tp_features.hotkey_tablet)
2881 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2882 "hotkey_tablet_mode");
2883}
2884
50ebec09 2885/* sysfs wakeup reason (pollable) -------------------------------------- */
a713b4d7
HMH		 2886static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2887 struct device_attribute *attr,
2888 char *buf)
2889{
2890 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2891}
2892
2893static struct device_attribute dev_attr_hotkey_wakeup_reason =
2894 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2895
1d5a2b54 2896static void hotkey_wakeup_reason_notify_change(void)
50ebec09 2897{
0d922e3b
HMH		 2898 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2899 "wakeup_reason");
50ebec09
HMH		 2900}
2901
2902/* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
a713b4d7
HMH		 2903static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2904 struct device_attribute *attr,
2905 char *buf)
2906{
2907 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2908}
2909
2910static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2911 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2912 hotkey_wakeup_hotunplug_complete_show, NULL);
2913
1d5a2b54 2914static void hotkey_wakeup_hotunplug_complete_notify_change(void)
50ebec09 2915{
0d922e3b
HMH		 2916 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2917 "wakeup_hotunplug_complete");
50ebec09
HMH		 2918}
2919
a0416420
HMH		 2920/* --------------------------------------------------------------------- */
2921
ff80f137
HMH		 2922static struct attribute *hotkey_attributes[] __initdata = {
2923 &dev_attr_hotkey_enable.attr,
01e88f25 2924 &dev_attr_hotkey_bios_enabled.attr,
0d922e3b 2925 &dev_attr_hotkey_bios_mask.attr,
0d922e3b
HMH		 2926 &dev_attr_hotkey_wakeup_reason.attr,
2927 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
01e88f25
HMH		 2928 &dev_attr_hotkey_mask.attr,
2929 &dev_attr_hotkey_all_mask.attr,
2930 &dev_attr_hotkey_recommended_mask.attr,
0d922e3b 2931#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 2932 &dev_attr_hotkey_source_mask.attr,
2933 &dev_attr_hotkey_poll_freq.attr,
2934#endif
ff80f137
HMH		 2935};
2936
19d337df
JB		 2937/*
2938 * Sync both the hw and sw blocking state of all switches
2939 */
733e27c1
HMH		 2940static void tpacpi_send_radiosw_update(void)
2941{
2942 int wlsw;
2943
19d337df
JB		 2944 /*
2945 * We must sync all rfkill controllers *before* issuing any
2946 * rfkill input events, or we will race the rfkill core input
2947 * handler.
2948 *
c8440336 2949 * tpacpi_inputdev_send_mutex works as a synchronization point
19d337df
JB		 2950 * for the above.
2951 *
2952 * We optimize to avoid numerous calls to hotkey_get_wlsw.
2953 */
2954
2955 wlsw = hotkey_get_wlsw();
2956
2957 /* Sync hw blocking state first if it is hw-blocked */
2958 if (wlsw == TPACPI_RFK_RADIO_OFF)
2959 tpacpi_rfk_update_hwblock_state(true);
0e74dc26 2960
19d337df
JB		 2961 /* Sync sw blocking state */
2962 tpacpi_rfk_update_swstate_all();
2963
2964 /* Sync hw blocking state last if it is hw-unblocked */
2965 if (wlsw == TPACPI_RFK_RADIO_ON)
2966 tpacpi_rfk_update_hwblock_state(false);
2967
2968 /* Issue rfkill input event for WLSW switch */
2969 if (!(wlsw < 0)) {
733e27c1
HMH		 2970 mutex_lock(&tpacpi_inputdev_send_mutex);
2971
2972 input_report_switch(tpacpi_inputdev,
19d337df 2973 SW_RFKILL_ALL, (wlsw > 0));
733e27c1
HMH		 2974 input_sync(tpacpi_inputdev);
2975
2976 mutex_unlock(&tpacpi_inputdev_send_mutex);
2977 }
19d337df
JB		 2978
2979 /*
2980 * this can be unconditional, as we will poll state again
2981 * if userspace uses the notify to read data
2982 */
733e27c1
HMH		 2983 hotkey_radio_sw_notify_change();
2984}
2985
9c0a76e1
HMH		 2986static void hotkey_exit(void)
2987{
2988#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
db25f16d 2989 mutex_lock(&hotkey_mutex);
9c0a76e1 2990 hotkey_poll_stop_sync();
db25f16d 2991 mutex_unlock(&hotkey_mutex);
9c0a76e1
HMH		 2992#endif
2993
2994 if (hotkey_dev_attributes)
2995 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2996
4be73005 2997 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
0d922e3b
HMH		 2998 "restoring original HKEY status and mask\n");
2999 /* yes, there is a bitwise or below, we want the
3000 * functions to be called even if one of them fail */
3001 if (((tp_features.hotkey_mask &&
3002 hotkey_mask_set(hotkey_orig_mask)) |
3003 hotkey_status_set(false)) != 0)
0978e012 3004 pr_err("failed to restore hot key mask "
4be73005 3005 "to BIOS defaults\n");
9c0a76e1
HMH		 3006}
3007
de4c8cc7
HMH		 3008static void __init hotkey_unmap(const unsigned int scancode)
3009{
3010 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
3011 clear_bit(hotkey_keycode_map[scancode],
3012 tpacpi_inputdev->keybit);
3013 hotkey_keycode_map[scancode] = KEY_RESERVED;
3014 }
3015}
3016
0d922e3b
HMH		 3017/*
3018 * HKEY quirks:
3019 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
3020 */
3021
3022#define TPACPI_HK_Q_INIMASK 0x0001
3023
3024static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
3025 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
3026 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
3027 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
3028 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
3029 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
3030 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
3031 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
3032 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
3033 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
3034 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
3035 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
3036 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
3037 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
3038 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
3039 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
3040 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
3041 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
3042 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
3043 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
3044};
3045
fc6e7568
HMH		 3046typedef u16 tpacpi_keymap_entry_t;
3047typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
d1e14dca 3048
a5763f22 3049static int __init hotkey_init(struct ibm_init_struct *iibm)
56b6aeb0 3050{
0f089147
HMH		 3051 /* Requirements for changing the default keymaps:
3052 *
3053 * 1. Many of the keys are mapped to KEY_RESERVED for very
3054 * good reasons. Do not change them unless you have deep
3055 * knowledge on the IBM and Lenovo ThinkPad firmware for
3056 * the various ThinkPad models. The driver behaves
3057 * differently for KEY_RESERVED: such keys have their
3058 * hot key mask *unset* in mask_recommended, and also
3059 * in the initial hot key mask programmed into the
3060 * firmware at driver load time, which means the firm-
3061 * ware may react very differently if you change them to
3062 * something else;
3063 *
3064 * 2. You must be subscribed to the linux-thinkpad and
3065 * ibm-acpi-devel mailing lists, and you should read the
3066 * list archives since 2007 if you want to change the
3067 * keymaps. This requirement exists so that you will
3068 * know the past history of problems with the thinkpad-
3069 * acpi driver keymaps, and also that you will be
3070 * listening to any bug reports;
3071 *
3072 * 3. Do not send thinkpad-acpi specific patches directly to
3073 * for merging, *ever*. Send them to the linux-acpi
3074 * mailinglist for comments. Merging is to be done only
3075 * through acpi-test and the ACPI maintainer.
3076 *
3077 * If the above is too much to ask, don't change the keymap.
3078 * Ask the thinkpad-acpi maintainer to do it, instead.
3079 */
d1e14dca
HMH		 3080
3081 enum keymap_index {
3082 TPACPI_KEYMAP_IBM_GENERIC = 0,
3083 TPACPI_KEYMAP_LENOVO_GENERIC,
3084 };
3085
3086 static const tpacpi_keymap_t tpacpi_keymaps[] __initconst = {
3087 /* Generic keymap for IBM ThinkPads */
3088 [TPACPI_KEYMAP_IBM_GENERIC] = {
edf0e0e5 3089 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
d1e14dca 3090 KEY_FN_F1, KEY_BATTERY, KEY_COFFEE, KEY_SLEEP,
edf0e0e5
HMH		 3091 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
3092 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3093
3094 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3095 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3096 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3097 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3098
0d922e3b 3099 /* brightness: firmware always reacts to them */
e927c08d 3100 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
e927c08d 3101 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
0f089147
HMH		 3102
3103 /* Thinklight: firmware always react to it */
edf0e0e5 3104 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3105
edf0e0e5
HMH		 3106 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3107 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3108
3109 /* Volume: firmware always react to it and reprograms
3110 * the built-in *extra* mixer. Never map it to control
3111 * another mixer by default. */
e927c08d
HMH		 3112 KEY_RESERVED, /* 0x14: VOLUME UP */
3113 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3114 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3115
edf0e0e5 3116 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3117
edf0e0e5
HMH		 3118 /* (assignments unknown, please report if found) */
3119 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
3120 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
d1e14dca
HMH		 3121 },
3122
3123 /* Generic keymap for Lenovo ThinkPads */
3124 [TPACPI_KEYMAP_LENOVO_GENERIC] = {
edf0e0e5
HMH		 3125 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
3126 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2b754262 3127 KEY_WLAN, KEY_CAMERA, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
edf0e0e5 3128 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
0f089147
HMH		 3129
3130 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
edf0e0e5
HMH		 3131 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
3132 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
3133 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
0f089147 3134
de4c8cc7
HMH		 3135 /* These should be enabled --only-- when ACPI video
3136 * is disabled (i.e. in "vendor" mode), and are handled
3137 * in a special way by the init code */
3138 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
3139 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
0f089147 3140
edf0e0e5 3141 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
0f089147 3142
edf0e0e5
HMH		 3143 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
3144 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
0f089147
HMH		 3145
3146 /* Volume: z60/z61, T60 (BIOS version?): firmware always
3147 * react to it and reprograms the built-in *extra* mixer.
3148 * Never map it to control another mixer by default.
3149 *
3150 * T60?, T61, R60?, R61: firmware and EC tries to send
3151 * these over the regular keyboard, so these are no-ops,
3152 * but there are still weird bugs re. MUTE, so do not
3153 * change unless you get test reports from all Lenovo
3154 * models. May cause the BIOS to interfere with the
3155 * HDA mixer.
3156 */
e927c08d
HMH		 3157 KEY_RESERVED, /* 0x14: VOLUME UP */
3158 KEY_RESERVED, /* 0x15: VOLUME DOWN */
3159 KEY_RESERVED, /* 0x16: MUTE */
0f089147 3160
edf0e0e5 3161 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
0f089147 3162
33009557
AL		 3163 /* (assignments unknown, please report if found) */
3164 KEY_UNKNOWN, KEY_UNKNOWN,
3165
3166 /*
3167 * The mic mute button only sends 0x1a. It does not
3168 * automatically mute the mic or change the mute light.
3169 */
3170 KEY_MICMUTE, /* 0x1a: Mic mute (since ?400 or so) */
3171
edf0e0e5 3172 /* (assignments unknown, please report if found) */
33009557 3173 KEY_UNKNOWN,
8b9dd4fa
HG		 3174
3175 /* Extra keys in use since the X240 / T440 / T540 */
4beb81d1 3176 KEY_CONFIG, KEY_SEARCH, KEY_SCALE, KEY_FILE,
d1e14dca 3177 },
edf0e0e5
HMH		 3178 };
3179
d1e14dca
HMH		 3180 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = {
3181 /* Generic maps (fallback) */
3182 {
3183 .vendor = PCI_VENDOR_ID_IBM,
3184 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3185 .quirks = TPACPI_KEYMAP_IBM_GENERIC,
3186 },
3187 {
3188 .vendor = PCI_VENDOR_ID_LENOVO,
3189 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
3190 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC,
3191 },
3192 };
3193
3194#define TPACPI_HOTKEY_MAP_SIZE sizeof(tpacpi_keymap_t)
fc6e7568 3195#define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(tpacpi_keymap_entry_t)
edf0e0e5 3196
6a38abbf 3197 int res, i;
74941a69 3198 int status;
1b6521dc 3199 int hkeyv;
d89a727a
HMH		 3200 bool radiosw_state = false;
3201 bool tabletsw_state = false;
b86c4722 3202
0d922e3b 3203 unsigned long quirks;
d1e14dca 3204 unsigned long keymap_id;
0d922e3b 3205
56e2c200
HMH		 3206 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3207 "initializing hotkey subdriver\n");
fe08bc4b 3208
6a38abbf 3209 BUG_ON(!tpacpi_inputdev);
01e88f25
HMH		 3210 BUG_ON(tpacpi_inputdev->open != NULL ||
3211 tpacpi_inputdev->close != NULL);
6a38abbf 3212
e0c7dfe7 3213 TPACPI_ACPIHANDLE_INIT(hkey);
40ca9fdf 3214 mutex_init(&hotkey_mutex);
5fba344c 3215
01e88f25 3216#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
01e88f25
HMH		 3217 mutex_init(&hotkey_thread_data_mutex);
3218#endif
3219
56b6aeb0 3220 /* hotkey not supported on 570 */
d8fd94d9 3221 tp_features.hotkey = hkey_handle != NULL;
56b6aeb0 3222
56e2c200
HMH		 3223 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3224 "hotkeys are %s\n",
d8fd94d9 3225 str_supported(tp_features.hotkey));
fe08bc4b 3226
9c0a76e1
HMH		 3227 if (!tp_features.hotkey)
3228 return 1;
a0416420 3229
0d922e3b
HMH		 3230 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
3231 ARRAY_SIZE(tpacpi_hotkey_qtable));
3232
d64c81c4
HMH		 3233 tpacpi_disable_brightness_delay();
3234
0d922e3b
HMH		 3235 /* MUST have enough space for all attributes to be added to
3236 * hotkey_dev_attributes */
3237 hotkey_dev_attributes = create_attr_set(
3238 ARRAY_SIZE(hotkey_attributes) + 2,
3239 NULL);
9c0a76e1
HMH		 3240 if (!hotkey_dev_attributes)
3241 return -ENOMEM;
3242 res = add_many_to_attr_set(hotkey_dev_attributes,
3243 hotkey_attributes,
3244 ARRAY_SIZE(hotkey_attributes));
3245 if (res)
3246 goto err_exit;
3247
0d922e3b 3248 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
9c0a76e1
HMH		 3249 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
3250 for HKEY interface version 0x100 */
3251 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3252 if ((hkeyv >> 8) != 1) {
0978e012
JP		 3253 pr_err("unknown version of the HKEY interface: 0x%x\n",
3254 hkeyv);
3255 pr_err("please report this to %s\n", TPACPI_MAIL);
9c0a76e1
HMH		 3256 } else {
3257 /*
3258 * MHKV 0x100 in A31, R40, R40e,
3259 * T4x, X31, and later
3260 */
56e2c200
HMH		 3261 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3262 "firmware HKEY interface version: 0x%x\n",
3263 hkeyv);
0d922e3b
HMH		 3264
3265 /* Paranoia check AND init hotkey_all_mask */
3266 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
3267 "MHKA", "qd")) {
0978e012 3268 pr_err("missing MHKA handler, "
0d922e3b
HMH		 3269 "please report this to %s\n",
3270 TPACPI_MAIL);
3271 /* Fallback: pre-init for FN+F3,F4,F12 */
3272 hotkey_all_mask = 0x080cU;
3273 } else {
3274 tp_features.hotkey_mask = 1;
3275 }
1b6521dc 3276 }
9c0a76e1 3277 }
56b6aeb0 3278
56e2c200
HMH		 3279 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3280 "hotkey masks are %s\n",
9c0a76e1 3281 str_supported(tp_features.hotkey_mask));
fe08bc4b 3282
0d922e3b
HMH		 3283 /* Init hotkey_all_mask if not initialized yet */
3284 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
3285 (quirks & TPACPI_HK_Q_INIMASK))
3286 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
9b010de5 3287
0d922e3b 3288 /* Init hotkey_acpi_mask and hotkey_orig_mask */
9c0a76e1 3289 if (tp_features.hotkey_mask) {
0d922e3b
HMH		 3290 /* hotkey_source_mask *must* be zero for
3291 * the first hotkey_mask_get to return hotkey_orig_mask */
9c0a76e1
HMH		 3292 res = hotkey_mask_get();
3293 if (res)
3294 goto err_exit;
3295
0d922e3b
HMH		 3296 hotkey_orig_mask = hotkey_acpi_mask;
3297 } else {
3298 hotkey_orig_mask = hotkey_all_mask;
3299 hotkey_acpi_mask = hotkey_all_mask;
9c0a76e1 3300 }
74941a69 3301
a73f3091
HMH		 3302#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3303 if (dbg_wlswemul) {
3304 tp_features.hotkey_wlsw = 1;
d89a727a 3305 radiosw_state = !!tpacpi_wlsw_emulstate;
0978e012 3306 pr_info("radio switch emulation enabled\n");
a73f3091
HMH		 3307 } else
3308#endif
9c0a76e1
HMH		 3309 /* Not all thinkpads have a hardware radio switch */
3310 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3311 tp_features.hotkey_wlsw = 1;
d89a727a 3312 radiosw_state = !!status;
0978e012 3313 pr_info("radio switch found; radios are %s\n",
9c0a76e1 3314 enabled(status, 0));
3a872080
HMH		 3315 }
3316 if (tp_features.hotkey_wlsw)
9c0a76e1
HMH		 3317 res = add_to_attr_set(hotkey_dev_attributes,
3318 &dev_attr_hotkey_radio_sw.attr);
74941a69 3319
9c0a76e1
HMH		 3320 /* For X41t, X60t, X61t Tablets... */
3321 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
3322 tp_features.hotkey_tablet = 1;
d89a727a 3323 tabletsw_state = !!(status & TP_HOTKEY_TABLET_MASK);
0978e012 3324 pr_info("possible tablet mode switch found; "
9c0a76e1 3325 "ThinkPad in %s mode\n",
d89a727a 3326 (tabletsw_state) ? "tablet" : "laptop");
9c0a76e1
HMH		 3327 res = add_to_attr_set(hotkey_dev_attributes,
3328 &dev_attr_hotkey_tablet_mode.attr);
3329 }
6c231bd5 3330
9c0a76e1
HMH		 3331 if (!res)
3332 res = register_attr_set_with_sysfs(
3333 hotkey_dev_attributes,
3334 &tpacpi_pdev->dev.kobj);
3335 if (res)
3336 goto err_exit;
6a38abbf 3337
9c0a76e1 3338 /* Set up key map */
9c0a76e1
HMH		 3339 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3340 GFP_KERNEL);
3341 if (!hotkey_keycode_map) {
0978e012 3342 pr_err("failed to allocate memory for key map\n");
9c0a76e1
HMH		 3343 res = -ENOMEM;
3344 goto err_exit;
3345 }
edf0e0e5 3346
d1e14dca
HMH		 3347 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable,
3348 ARRAY_SIZE(tpacpi_keymap_qtable));
3349 BUG_ON(keymap_id >= ARRAY_SIZE(tpacpi_keymaps));
3350 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3351 "using keymap number %lu\n", keymap_id);
3352
3353 memcpy(hotkey_keycode_map, &tpacpi_keymaps[keymap_id],
3354 TPACPI_HOTKEY_MAP_SIZE);
edf0e0e5 3355
792979c8 3356 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
9c0a76e1
HMH		 3357 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3358 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3359 tpacpi_inputdev->keycode = hotkey_keycode_map;
3360 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3361 if (hotkey_keycode_map[i] != KEY_RESERVED) {
792979c8
HMH		 3362 input_set_capability(tpacpi_inputdev, EV_KEY,
3363 hotkey_keycode_map[i]);
9c0a76e1
HMH		 3364 } else {
3365 if (i < sizeof(hotkey_reserved_mask)*8)
3366 hotkey_reserved_mask |= 1 << i;
6a38abbf 3367 }
9c0a76e1 3368 }
6a38abbf 3369
9c0a76e1 3370 if (tp_features.hotkey_wlsw) {
792979c8 3371 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
d89a727a
HMH		 3372 input_report_switch(tpacpi_inputdev,
3373 SW_RFKILL_ALL, radiosw_state);
9c0a76e1
HMH		 3374 }
3375 if (tp_features.hotkey_tablet) {
792979c8 3376 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
d89a727a
HMH		 3377 input_report_switch(tpacpi_inputdev,
3378 SW_TABLET_MODE, tabletsw_state);
9c0a76e1 3379 }
5c29d58f 3380
9c0a76e1 3381 /* Do not issue duplicate brightness change events to
77775838
HMH		 3382 * userspace. tpacpi_detect_brightness_capabilities() must have
3383 * been called before this point */
ff413195 3384 if (acpi_video_backlight_support()) {
0978e012
JP		 3385 pr_info("This ThinkPad has standard ACPI backlight "
3386 "brightness control, supported by the ACPI "
3387 "video driver\n");
3388 pr_notice("Disabling thinkpad-acpi brightness events "
3389 "by default...\n");
9c0a76e1 3390
de4c8cc7
HMH		 3391 /* Disable brightness up/down on Lenovo thinkpads when
3392 * ACPI is handling them, otherwise it is plain impossible
3393 * for userspace to do something even remotely sane */
9c0a76e1
HMH		 3394 hotkey_reserved_mask |=
3395 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3396 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
de4c8cc7
HMH		 3397 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3398 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
9c0a76e1 3399 }
ff80f137 3400
230d8cf2 3401#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
0d922e3b
HMH		 3402 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3403 & ~hotkey_all_mask
3404 & ~hotkey_reserved_mask;
230d8cf2
HMH		 3405
3406 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3407 "hotkey source mask 0x%08x, polling freq %u\n",
3408 hotkey_source_mask, hotkey_poll_freq);
3409#endif
3410
56e2c200
HMH		 3411 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3412 "enabling firmware HKEY event interface...\n");
2586d566 3413 res = hotkey_status_set(true);
9c0a76e1
HMH		 3414 if (res) {
3415 hotkey_exit();
3416 return res;
3417 }
0d922e3b
HMH		 3418 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3419 | hotkey_driver_mask)
3420 & ~hotkey_source_mask);
9c0a76e1
HMH		 3421 if (res < 0 && res != -ENXIO) {
3422 hotkey_exit();
3423 return res;
3424 }
0d922e3b
HMH		 3425 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3426 & ~hotkey_reserved_mask;
3427 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3428 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3429 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
01e88f25 3430
9c0a76e1
HMH		 3431 tpacpi_inputdev->open = &hotkey_inputdev_open;
3432 tpacpi_inputdev->close = &hotkey_inputdev_close;
56b6aeb0 3433
db25f16d 3434 hotkey_poll_setup_safe(true);
56b6aeb0 3435
9c0a76e1 3436 return 0;
01e88f25 3437
9c0a76e1
HMH		 3438err_exit:
3439 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3440 hotkey_dev_attributes = NULL;
a0416420 3441
72a979f0 3442 return (res < 0) ? res : 1;
56b6aeb0
HMH		 3443}
3444
3a9d20bd
SS		 3445/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser
3446 * mode, Web conference mode, Function mode and Lay-flat mode.
3447 * We support Home mode and Function mode currently.
3448 *
3449 * Will consider support rest of modes in future.
3450 *
3451 */
3452enum ADAPTIVE_KEY_MODE {
3453 HOME_MODE,
3454 WEB_BROWSER_MODE,
3455 WEB_CONFERENCE_MODE,
3456 FUNCTION_MODE,
3457 LAYFLAT_MODE
3458};
3459
b201a47f 3460static const int adaptive_keyboard_modes[] = {
3a9d20bd
SS		 3461 HOME_MODE,
3462/* WEB_BROWSER_MODE = 2,
3463 WEB_CONFERENCE_MODE = 3, */
3464 FUNCTION_MODE
3465};
3466
3467#define DFR_CHANGE_ROW 0x101
3468#define DFR_SHOW_QUICKVIEW_ROW 0x102
3469
3470/* press Fn key a while second, it will switch to Function Mode. Then
3471 * release Fn key, previous mode be restored.
3472 */
3473static bool adaptive_keyboard_mode_is_saved;
3474static int adaptive_keyboard_prev_mode;
3475
3476static int adaptive_keyboard_get_next_mode(int mode)
3477{
3478 size_t i;
3479 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1;
3480
3481 for (i = 0; i <= max_mode; i++) {
3482 if (adaptive_keyboard_modes[i] == mode)
3483 break;
3484 }
3485
3486 if (i >= max_mode)
3487 i = 0;
3488 else
3489 i++;
3490
3491 return adaptive_keyboard_modes[i];
3492}
3493
3494static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode)
3495{
3496 u32 current_mode = 0;
3497 int new_mode = 0;
3498
3499 switch (scancode) {
3500 case DFR_CHANGE_ROW:
3501 if (adaptive_keyboard_mode_is_saved) {
3502 new_mode = adaptive_keyboard_prev_mode;
3503 adaptive_keyboard_mode_is_saved = false;
3504 } else {
3505 if (!acpi_evalf(
3506 hkey_handle, &current_mode,
3507 "GTRW", "dd", 0)) {
3508 pr_err("Cannot read adaptive keyboard mode\n");
3509 return false;
3510 } else {
3511 new_mode = adaptive_keyboard_get_next_mode(
3512 current_mode);
3513 }
3514 }
3515
3516 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) {
3517 pr_err("Cannot set adaptive keyboard mode\n");
3518 return false;
3519 }
3520
3521 return true;
3522
3523 case DFR_SHOW_QUICKVIEW_ROW:
3524 if (!acpi_evalf(hkey_handle,
3525 &adaptive_keyboard_prev_mode,
3526 "GTRW", "dd", 0)) {
3527 pr_err("Cannot read adaptive keyboard mode\n");
3528 return false;
3529 } else {
3530 adaptive_keyboard_mode_is_saved = true;
3531
3532 if (!acpi_evalf(hkey_handle,
3533 NULL, "STRW", "vd", FUNCTION_MODE)) {
3534 pr_err("Cannot set adaptive keyboard mode\n");
3535 return false;
3536 }
3537 }
3538 return true;
3539
3540 default:
3541 return false;
3542 }
3543}
3544
3827e7a3
HMH		 3545static bool hotkey_notify_hotkey(const u32 hkey,
3546 bool *send_acpi_ev,
3547 bool *ignore_acpi_ev)
3548{
3549 /* 0x1000-0x1FFF: key presses */
3550 unsigned int scancode = hkey & 0xfff;
3551 *send_acpi_ev = true;
3552 *ignore_acpi_ev = false;
3553
34a656d2
HMH		 3554 /* HKEY event 0x1001 is scancode 0x00 */
3555 if (scancode > 0 && scancode <= TPACPI_HOTKEY_MAP_LEN) {
3827e7a3
HMH		 3556 scancode--;
3557 if (!(hotkey_source_mask & (1 << scancode))) {
0d922e3b 3558 tpacpi_input_send_key_masked(scancode);
3827e7a3
HMH		 3559 *send_acpi_ev = false;
3560 } else {
3561 *ignore_acpi_ev = true;
3562 }
3563 return true;
3a9d20bd
SS		 3564 } else {
3565 return adaptive_keyboard_hotkey_notify_hotkey(scancode);
3827e7a3
HMH		 3566 }
3567 return false;
3568}
3569
3570static bool hotkey_notify_wakeup(const u32 hkey,
3571 bool *send_acpi_ev,
3572 bool *ignore_acpi_ev)
3573{
3574 /* 0x2000-0x2FFF: Wakeup reason */
3575 *send_acpi_ev = true;
3576 *ignore_acpi_ev = false;
3577
3578 switch (hkey) {
67bcae6e
HMH		 3579 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3580 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3827e7a3
HMH		 3581 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3582 *ignore_acpi_ev = true;
3583 break;
3584
67bcae6e
HMH		 3585 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3586 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3827e7a3
HMH		 3587 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3588 *ignore_acpi_ev = true;
3589 break;
3590
67bcae6e
HMH		 3591 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3592 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
0978e012 3593 pr_alert("EMERGENCY WAKEUP: battery almost empty\n");
106b4e66
HMH		 3594 /* how to auto-heal: */
3595 /* 2313: woke up from S3, go to S4/S5 */
3596 /* 2413: woke up from S4, go to S5 */
3597 break;
3598
3827e7a3
HMH		 3599 default:
3600 return false;
3601 }
3602
3603 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
0978e012 3604 pr_info("woke up due to a hot-unplug request...\n");
3827e7a3
HMH		 3605 hotkey_wakeup_reason_notify_change();
3606 }
3607 return true;
3608}
3609
a50245af
HMH		 3610static bool hotkey_notify_dockevent(const u32 hkey,
3611 bool *send_acpi_ev,
3612 bool *ignore_acpi_ev)
3613{
3614 /* 0x4000-0x4FFF: dock-related events */
3615 *send_acpi_ev = true;
3616 *ignore_acpi_ev = false;
3617
3618 switch (hkey) {
3619 case TP_HKEY_EV_UNDOCK_ACK:
3620 /* ACPI undock operation completed after wakeup */
3621 hotkey_autosleep_ack = 1;
3622 pr_info("undocked\n");
3623 hotkey_wakeup_hotunplug_complete_notify_change();
3624 return true;
3625
3626 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */
3627 pr_info("docked into hotplug port replicator\n");
3628 return true;
3629 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
3630 pr_info("undocked from hotplug port replicator\n");
3631 return true;
3632
3633 default:
3634 return false;
3635 }
3636}
3637
3827e7a3
HMH		 3638static bool hotkey_notify_usrevent(const u32 hkey,
3639 bool *send_acpi_ev,
3640 bool *ignore_acpi_ev)
3641{
3642 /* 0x5000-0x5FFF: human interface helpers */
3643 *send_acpi_ev = true;
3644 *ignore_acpi_ev = false;
3645
3646 switch (hkey) {
67bcae6e
HMH		 3647 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
3648 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3827e7a3
HMH		 3649 return true;
3650
67bcae6e
HMH		 3651 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
3652 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3827e7a3
HMH		 3653 tpacpi_input_send_tabletsw();
3654 hotkey_tablet_mode_notify_change();
3655 *send_acpi_ev = false;
3656 return true;
3657
67bcae6e
HMH		 3658 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
3659 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
3660 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
176dd985 3661 /* do not propagate these events */
3827e7a3
HMH		 3662 *ignore_acpi_ev = true;
3663 return true;
3664
3665 default:
3666 return false;
3667 }
3668}
3669
9ebd9e83
HMH		 3670static void thermal_dump_all_sensors(void);
3671
2d43f671 3672static bool hotkey_notify_6xxx(const u32 hkey,
106b4e66
HMH		 3673 bool *send_acpi_ev,
3674 bool *ignore_acpi_ev)
3675{
9ebd9e83
HMH		 3676 bool known = true;
3677
2d43f671 3678 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */
106b4e66
HMH		 3679 *send_acpi_ev = true;
3680 *ignore_acpi_ev = false;
3681
3682 switch (hkey) {
9ebd9e83 3683 case TP_HKEY_EV_THM_TABLE_CHANGED:
0978e012 3684 pr_info("EC reports that Thermal Table has changed\n");
9ebd9e83
HMH		 3685 /* recommended action: do nothing, we don't have
3686 * Lenovo ATM information */
3687 return true;
67bcae6e 3688 case TP_HKEY_EV_ALARM_BAT_HOT:
0978e012 3689 pr_crit("THERMAL ALARM: battery is too hot!\n");
106b4e66 3690 /* recommended action: warn user through gui */
9ebd9e83 3691 break;
67bcae6e 3692 case TP_HKEY_EV_ALARM_BAT_XHOT:
0978e012 3693 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n");
106b4e66 3694 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3695 break;
67bcae6e 3696 case TP_HKEY_EV_ALARM_SENSOR_HOT:
0978e012 3697 pr_crit("THERMAL ALARM: "
106b4e66
HMH		 3698 "a sensor reports something is too hot!\n");
3699 /* recommended action: warn user through gui, that */
3700 /* some internal component is too hot */
9ebd9e83 3701 break;
67bcae6e 3702 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
0978e012
JP		 3703 pr_alert("THERMAL EMERGENCY: "
3704 "a sensor reports something is extremely hot!\n");
106b4e66 3705 /* recommended action: immediate sleep/hibernate */
9ebd9e83 3706 break;
6f62bc3e
RH		 3707 case TP_HKEY_EV_AC_CHANGED:
3708 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520:
3709 * AC status changed; can be triggered by plugging or
3710 * unplugging AC adapter, docking or undocking. */
3711
3712 /* fallthrough */
2d43f671
HMH		 3713
3714 case TP_HKEY_EV_KEY_NUMLOCK:
3715 case TP_HKEY_EV_KEY_FN:
67ab6248 3716 case TP_HKEY_EV_KEY_FN_ESC:
2d43f671
HMH		 3717 /* key press events, we just ignore them as long as the EC
3718 * is still reporting them in the normal keyboard stream */
3719 *send_acpi_ev = false;
3720 *ignore_acpi_ev = true;
3721 return true;
3722
106b4e66 3723 default:
2d43f671 3724 pr_warn("unknown possible thermal alarm or keyboard event received\n");
9ebd9e83 3725 known = false;
106b4e66 3726 }
9ebd9e83
HMH		 3727
3728 thermal_dump_all_sensors();
3729
3730 return known;
106b4e66
HMH		 3731}
3732
56b6aeb0
HMH		 3733static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3734{
6a38abbf 3735 u32 hkey;
3827e7a3
HMH		 3736 bool send_acpi_ev;
3737 bool ignore_acpi_ev;
3738 bool known_ev;
3eea123d
HMH		 3739
3740 if (event != 0x80) {
0978e012 3741 pr_err("unknown HKEY notification event %d\n", event);
3eea123d 3742 /* forward it to userspace, maybe it knows how to handle it */
35ff8b9f
HMH		 3743 acpi_bus_generate_netlink_event(
3744 ibm->acpi->device->pnp.device_class,
e0b36fc5 3745 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3746 event, 0);
3eea123d
HMH		 3747 return;
3748 }
3749
3750 while (1) {
3751 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
0978e012 3752 pr_err("failed to retrieve HKEY event\n");
3eea123d
HMH		 3753 return;
3754 }
3755
3756 if (hkey == 0) {
3757 /* queue empty */
3758 return;
3759 }
3760
3827e7a3
HMH		 3761 send_acpi_ev = true;
3762 ignore_acpi_ev = false;
56b6aeb0 3763
ff80f137
HMH		 3764 switch (hkey >> 12) {
3765 case 1:
3766 /* 0x1000-0x1FFF: key presses */
3827e7a3
HMH		 3767 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3768 &ignore_acpi_ev);
ff80f137 3769 break;
a713b4d7 3770 case 2:
3827e7a3
HMH		 3771 /* 0x2000-0x2FFF: Wakeup reason */
3772 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3773 &ignore_acpi_ev);
a713b4d7
HMH		 3774 break;
3775 case 3:
3827e7a3 3776 /* 0x3000-0x3FFF: bay-related wakeups */
bf8b29c8
HMH		 3777 switch (hkey) {
3778 case TP_HKEY_EV_BAYEJ_ACK:
a713b4d7 3779 hotkey_autosleep_ack = 1;
0978e012 3780 pr_info("bay ejected\n");
50ebec09 3781 hotkey_wakeup_hotunplug_complete_notify_change();
3827e7a3 3782 known_ev = true;
bf8b29c8
HMH		 3783 break;
3784 case TP_HKEY_EV_OPTDRV_EJ:
3785 /* FIXME: kick libata if SATA link offline */
3786 known_ev = true;
3787 break;
3788 default:
3827e7a3 3789 known_ev = false;
a713b4d7
HMH		 3790 }
3791 break;
3792 case 4:
a50245af
HMH		 3793 /* 0x4000-0x4FFF: dock-related events */
3794 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev,
3795 &ignore_acpi_ev);
a713b4d7 3796 break;
ff80f137 3797 case 5:
d1edb2b5 3798 /* 0x5000-0x5FFF: human interface helpers */
3827e7a3
HMH		 3799 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3800 &ignore_acpi_ev);
ff80f137 3801 break;
106b4e66 3802 case 6:
2d43f671
HMH		 3803 /* 0x6000-0x6FFF: thermal alarms/notices and
3804 * keyboard events */
3805 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev,
106b4e66
HMH		 3806 &ignore_acpi_ev);
3807 break;
ff80f137
HMH		 3808 case 7:
3809 /* 0x7000-0x7FFF: misc */
67bcae6e
HMH		 3810 if (tp_features.hotkey_wlsw &&
3811 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
733e27c1 3812 tpacpi_send_radiosw_update();
3b64b51d 3813 send_acpi_ev = 0;
3827e7a3 3814 known_ev = true;
6a38abbf 3815 break;
6a38abbf 3816 }
ff80f137
HMH		 3817 /* fallthrough to default */
3818 default:
3827e7a3 3819 known_ev = false;
3b64b51d 3820 }
3827e7a3 3821 if (!known_ev) {
0978e012
JP		 3822 pr_notice("unhandled HKEY event 0x%04x\n", hkey);
3823 pr_notice("please report the conditions when this "
3824 "event happened to %s\n", TPACPI_MAIL);
6a38abbf 3825 }
ff80f137 3826
3eea123d 3827 /* netlink events */
3e5ce914 3828 if (!ignore_acpi_ev && send_acpi_ev) {
35ff8b9f
HMH		 3829 acpi_bus_generate_netlink_event(
3830 ibm->acpi->device->pnp.device_class,
e0b36fc5 3831 dev_name(&ibm->acpi->device->dev),
35ff8b9f 3832 event, hkey);
3eea123d 3833 }
56b6aeb0
HMH		 3834 }
3835}
3836
fd3c3a42 3837static void hotkey_suspend(void)
a713b4d7 3838{
330947b8
SS		 3839 int hkeyv;
3840
a713b4d7
HMH		 3841 /* Do these on suspend, we get the events on early resume! */
3842 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3843 hotkey_autosleep_ack = 0;
330947b8
SS		 3844
3845 /* save previous mode of adaptive keyboard of X1 Carbon */
3846 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3847 if ((hkeyv >> 8) == 2) {
3848 if (!acpi_evalf(hkey_handle,
3849 &adaptive_keyboard_prev_mode,
3850 "GTRW", "dd", 0)) {
3851 pr_err("Cannot read adaptive keyboard mode.\n");
3852 }
3853 }
3854 }
a713b4d7
HMH		 3855}
3856
5c29d58f
HMH		 3857static void hotkey_resume(void)
3858{
330947b8
SS		 3859 int hkeyv;
3860
d64c81c4
HMH		 3861 tpacpi_disable_brightness_delay();
3862
0d922e3b
HMH		 3863 if (hotkey_status_set(true) < 0 ||
3864 hotkey_mask_set(hotkey_acpi_mask) < 0)
0978e012 3865 pr_err("error while attempting to reset the event "
0d922e3b
HMH		 3866 "firmware interface\n");
3867
733e27c1 3868 tpacpi_send_radiosw_update();
6c231bd5 3869 hotkey_tablet_mode_notify_change();
50ebec09
HMH		 3870 hotkey_wakeup_reason_notify_change();
3871 hotkey_wakeup_hotunplug_complete_notify_change();
db25f16d 3872 hotkey_poll_setup_safe(false);
330947b8
SS		 3873
3874 /* restore previous mode of adapive keyboard of X1 Carbon */
3875 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
3876 if ((hkeyv >> 8) == 2) {
3877 if (!acpi_evalf(hkey_handle,
3878 NULL,
3879 "STRW", "vd",
3880 adaptive_keyboard_prev_mode)) {
3881 pr_err("Cannot set adaptive keyboard mode.\n");
3882 }
3883 }
3884 }
5c29d58f
HMH		 3885}
3886
a0416420 3887/* procfs -------------------------------------------------------------- */
887965e6 3888static int hotkey_read(struct seq_file *m)
1da177e4 3889{
ae92bd17 3890 int res, status;
1da177e4 3891
d8fd94d9 3892 if (!tp_features.hotkey) {
887965e6
AD		 3893 seq_printf(m, "status:\t\tnot supported\n");
3894 return 0;
78f81cc4
BD		 3895 }
3896
7646ea88 3897 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3898 return -ERESTARTSYS;
b2c985e7
HMH		 3899 res = hotkey_status_get(&status);
3900 if (!res)
3901 res = hotkey_mask_get();
40ca9fdf 3902 mutex_unlock(&hotkey_mutex);
b86c4722
HMH		 3903 if (res)
3904 return res;
1da177e4 3905
887965e6 3906 seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
0d922e3b 3907 if (hotkey_all_mask) {
887965e6
AD		 3908 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
3909 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
1da177e4 3910 } else {
887965e6
AD		 3911 seq_printf(m, "mask:\t\tnot supported\n");
3912 seq_printf(m, "commands:\tenable, disable, reset\n");
1da177e4
LT		 3913 }
3914
887965e6 3915 return 0;
1da177e4
LT		 3916}
3917
406e988b 3918static void hotkey_enabledisable_warn(bool enable)
2586d566
HMH		 3919{
3920 tpacpi_log_usertask("procfs hotkey enable/disable");
406e988b 3921 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
0978e012
JP		 3922 pr_fmt("hotkey enable/disable functionality has been "
3923 "removed from the driver. "
3924 "Hotkeys are always enabled.\n")))
3925 pr_err("Please remove the hotkey=enable module "
3926 "parameter, it is deprecated. "
3927 "Hotkeys are always enabled.\n");
2586d566
HMH		 3928}
3929
78f81cc4 3930static int hotkey_write(char *buf)
1da177e4 3931{
2586d566 3932 int res;
ae92bd17 3933 u32 mask;
1da177e4 3934 char *cmd;
1da177e4 3935
d8fd94d9 3936 if (!tp_features.hotkey)
1da177e4
LT		 3937 return -ENODEV;
3938
7646ea88 3939 if (mutex_lock_killable(&hotkey_mutex))
fc589a3c 3940 return -ERESTARTSYS;
40ca9fdf 3941
0d922e3b 3942 mask = hotkey_user_mask;
78f81cc4 3943
40ca9fdf 3944 res = 0;
1da177e4
LT		 3945 while ((cmd = next_cmd(&buf))) {
3946 if (strlencmp(cmd, "enable") == 0) {
406e988b 3947 hotkey_enabledisable_warn(1);
1da177e4 3948 } else if (strlencmp(cmd, "disable") == 0) {
406e988b 3949 hotkey_enabledisable_warn(0);
2586d566 3950 res = -EPERM;
1da177e4 3951 } else if (strlencmp(cmd, "reset") == 0) {
20c9aa46
HMH		 3952 mask = (hotkey_all_mask | hotkey_source_mask)
3953 & ~hotkey_reserved_mask;
1da177e4
LT		 3954 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
3955 /* mask set */
3956 } else if (sscanf(cmd, "%x", &mask) == 1) {
3957 /* mask set */
40ca9fdf
HMH		 3958 } else {
3959 res = -EINVAL;
3960 goto errexit;
3961 }
1da177e4 3962 }
56e2c200 3963
0d922e3b 3964 if (!res) {
56e2c200
HMH		 3965 tpacpi_disclose_usertask("procfs hotkey",
3966 "set mask to 0x%08x\n", mask);
0d922e3b
HMH		 3967 res = hotkey_user_mask_set(mask);
3968 }
1da177e4 3969
40ca9fdf
HMH		 3970errexit:
3971 mutex_unlock(&hotkey_mutex);
3972 return res;
78f81cc4 3973}
1da177e4 3974
1ba90e3a 3975static const struct acpi_device_id ibm_htk_device_ids[] = {
9fbdaeb4
MI		 3976 {TPACPI_ACPI_IBM_HKEY_HID, 0},
3977 {TPACPI_ACPI_LENOVO_HKEY_HID, 0},
1ba90e3a
TR		 3978 {"", 0},
3979};
3980
8d376cd6 3981static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
1ba90e3a 3982 .hid = ibm_htk_device_ids,
8d376cd6
HMH		 3983 .notify = hotkey_notify,
3984 .handle = &hkey_handle,
3985 .type = ACPI_DEVICE_NOTIFY,
3986};
3987
a5763f22
HMH		 3988static struct ibm_struct hotkey_driver_data = {
3989 .name = "hotkey",
a5763f22
HMH		 3990 .read = hotkey_read,
3991 .write = hotkey_write,
3992 .exit = hotkey_exit,
5c29d58f 3993 .resume = hotkey_resume,
a713b4d7 3994 .suspend = hotkey_suspend,
8d376cd6 3995 .acpi = &ibm_hotkey_acpidriver,
a5763f22
HMH		 3996};
3997
56b6aeb0
HMH		 3998/*************************************************************************
3999 * Bluetooth subdriver
4000 */
1da177e4 4001
f74a27d4
HMH		 4002enum {
4003 /* ACPI GBDC/SBDC bits */
4004 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
4005 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
153f8220 4006 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
08fedfc9 4007 0 = disable, 1 = enable */
153f8220
HMH		 4008};
4009
4010enum {
4011 /* ACPI \BLTH commands */
4012 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
4013 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
4014 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
4015 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
4016 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
f74a27d4
HMH		 4017};
4018
bee4cd9b
HMH		 4019#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
4020
19d337df 4021static int bluetooth_get_status(void)
07431ec8
HMH		 4022{
4023 int status;
4024
a73f3091
HMH		 4025#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4026 if (dbg_bluetoothemul)
4027 return (tpacpi_bluetooth_emulstate) ?
19d337df 4028 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4029#endif
4030
07431ec8
HMH		 4031 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
4032 return -EIO;
4033
0e74dc26 4034 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
19d337df 4035 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
07431ec8
HMH		 4036}
4037
19d337df 4038static int bluetooth_set_status(enum tpacpi_rfkill_state state)
0e74dc26
HMH		 4039{
4040 int status;
4041
bee4cd9b 4042 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4043 "will attempt to %s bluetooth\n",
4044 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4045
a73f3091
HMH		 4046#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4047 if (dbg_bluetoothemul) {
19d337df 4048 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4049 return 0;
4050 }
4051#endif
4052
19d337df 4053 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4054 status = TP_ACPI_BLUETOOTH_RADIOSSW
4055 | TP_ACPI_BLUETOOTH_RESUMECTRL;
4056 else
4057 status = 0;
19d337df 4058
07431ec8
HMH		 4059 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
4060 return -EIO;
4061
4062 return 0;
4063}
f74a27d4 4064
d3a6ade4
HMH		 4065/* sysfs bluetooth enable ---------------------------------------------- */
4066static ssize_t bluetooth_enable_show(struct device *dev,
4067 struct device_attribute *attr,
4068 char *buf)
4069{
19d337df
JB		 4070 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
4071 attr, buf);
d3a6ade4
HMH		 4072}
4073
4074static ssize_t bluetooth_enable_store(struct device *dev,
4075 struct device_attribute *attr,
4076 const char *buf, size_t count)
4077{
19d337df
JB		 4078 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
4079 attr, buf, count);
d3a6ade4
HMH		 4080}
4081
4082static struct device_attribute dev_attr_bluetooth_enable =
cc4c24e1 4083 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 4084 bluetooth_enable_show, bluetooth_enable_store);
4085
4086/* --------------------------------------------------------------------- */
4087
4088static struct attribute *bluetooth_attributes[] = {
4089 &dev_attr_bluetooth_enable.attr,
4090 NULL
4091};
4092
4093static const struct attribute_group bluetooth_attr_group = {
d3a6ade4
HMH		 4094 .attrs = bluetooth_attributes,
4095};
4096
19d337df
JB		 4097static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
4098 .get_status = bluetooth_get_status,
4099 .set_status = bluetooth_set_status,
4100};
0e74dc26 4101
90d9d3c7
HMH		 4102static void bluetooth_shutdown(void)
4103{
4104 /* Order firmware to save current state to NVRAM */
4105 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
4106 TP_ACPI_BLTH_SAVE_STATE))
0978e012 4107 pr_notice("failed to save bluetooth state to NVRAM\n");
bee4cd9b
HMH		 4108 else
4109 vdbg_printk(TPACPI_DBG_RFKILL,
1f01358c 4110 "bluetooth state saved to NVRAM\n");
90d9d3c7
HMH		 4111}
4112
07431ec8
HMH		 4113static void bluetooth_exit(void)
4114{
4115 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4116 &bluetooth_attr_group);
19d337df
JB		 4117
4118 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
4119
4120 bluetooth_shutdown();
07431ec8
HMH		 4121}
4122
a5763f22 4123static int __init bluetooth_init(struct ibm_init_struct *iibm)
1da177e4 4124{
d3a6ade4 4125 int res;
d6fdd1e9
HMH		 4126 int status = 0;
4127
bee4cd9b
HMH		 4128 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4129 "initializing bluetooth subdriver\n");
fe08bc4b 4130
e0c7dfe7 4131 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4132
78f81cc4
BD		 4133 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4134 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
d8fd94d9 4135 tp_features.bluetooth = hkey_handle &&
d6fdd1e9
HMH		 4136 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
4137
bee4cd9b
HMH		 4138 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4139 "bluetooth is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4140 str_supported(tp_features.bluetooth),
4141 status);
4142
a73f3091
HMH		 4143#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4144 if (dbg_bluetoothemul) {
4145 tp_features.bluetooth = 1;
0978e012 4146 pr_info("bluetooth switch emulation enabled\n");
a73f3091
HMH		 4147 } else
4148#endif
3a872080
HMH		 4149 if (tp_features.bluetooth &&
4150 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
4151 /* no bluetooth hardware present in system */
4152 tp_features.bluetooth = 0;
bee4cd9b 4153 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4154 "bluetooth hardware not installed\n");
4155 }
4156
0e74dc26
HMH		 4157 if (!tp_features.bluetooth)
4158 return 1;
4159
0e74dc26 4160 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
19d337df 4161 &bluetooth_tprfk_ops,
0e74dc26 4162 RFKILL_TYPE_BLUETOOTH,
bee4cd9b 4163 TPACPI_RFK_BLUETOOTH_SW_NAME,
19d337df
JB		 4164 true);
4165 if (res)
4166 return res;
4167
4168 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4169 &bluetooth_attr_group);
0e74dc26 4170 if (res) {
19d337df 4171 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
0e74dc26 4172 return res;
d6fdd1e9 4173 }
fe08bc4b 4174
0e74dc26 4175 return 0;
1da177e4
LT		 4176}
4177
d3a6ade4 4178/* procfs -------------------------------------------------------------- */
887965e6 4179static int bluetooth_read(struct seq_file *m)
1da177e4 4180{
887965e6 4181 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m);
1da177e4
LT		 4182}
4183
78f81cc4 4184static int bluetooth_write(char *buf)
1da177e4 4185{
19d337df 4186 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
1da177e4
LT		 4187}
4188
a5763f22
HMH		 4189static struct ibm_struct bluetooth_driver_data = {
4190 .name = "bluetooth",
4191 .read = bluetooth_read,
4192 .write = bluetooth_write,
d3a6ade4 4193 .exit = bluetooth_exit,
90d9d3c7 4194 .shutdown = bluetooth_shutdown,
a5763f22
HMH		 4195};
4196
56b6aeb0
HMH		 4197/*************************************************************************
4198 * Wan subdriver
4199 */
4200
f74a27d4
HMH		 4201enum {
4202 /* ACPI GWAN/SWAN bits */
4203 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
4204 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
153f8220 4205 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
08fedfc9 4206 0 = disable, 1 = enable */
f74a27d4
HMH		 4207};
4208
bee4cd9b
HMH		 4209#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
4210
19d337df 4211static int wan_get_status(void)
07431ec8
HMH		 4212{
4213 int status;
4214
a73f3091
HMH		 4215#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4216 if (dbg_wwanemul)
4217 return (tpacpi_wwan_emulstate) ?
19d337df 4218 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
a73f3091
HMH		 4219#endif
4220
07431ec8
HMH		 4221 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
4222 return -EIO;
4223
0e74dc26 4224 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
19d337df 4225 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0e74dc26
HMH		 4226}
4227
19d337df 4228static int wan_set_status(enum tpacpi_rfkill_state state)
07431ec8
HMH		 4229{
4230 int status;
4231
bee4cd9b 4232 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4233 "will attempt to %s wwan\n",
4234 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4235
a73f3091
HMH		 4236#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4237 if (dbg_wwanemul) {
19d337df 4238 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
a73f3091
HMH		 4239 return 0;
4240 }
4241#endif
4242
19d337df 4243 if (state == TPACPI_RFK_RADIO_ON)
08fedfc9
HMH		 4244 status = TP_ACPI_WANCARD_RADIOSSW
4245 | TP_ACPI_WANCARD_RESUMECTRL;
4246 else
4247 status = 0;
19d337df 4248
07431ec8
HMH		 4249 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
4250 return -EIO;
4251
4252 return 0;
4253}
f74a27d4 4254
d3a6ade4
HMH		 4255/* sysfs wan enable ---------------------------------------------------- */
4256static ssize_t wan_enable_show(struct device *dev,
4257 struct device_attribute *attr,
4258 char *buf)
4259{
19d337df
JB		 4260 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
4261 attr, buf);
d3a6ade4
HMH		 4262}
4263
4264static ssize_t wan_enable_store(struct device *dev,
4265 struct device_attribute *attr,
4266 const char *buf, size_t count)
4267{
19d337df
JB		 4268 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
4269 attr, buf, count);
d3a6ade4
HMH		 4270}
4271
4272static struct device_attribute dev_attr_wan_enable =
cc4c24e1 4273 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
d3a6ade4
HMH		 4274 wan_enable_show, wan_enable_store);
4275
4276/* --------------------------------------------------------------------- */
4277
4278static struct attribute *wan_attributes[] = {
4279 &dev_attr_wan_enable.attr,
4280 NULL
4281};
4282
4283static const struct attribute_group wan_attr_group = {
d3a6ade4
HMH		 4284 .attrs = wan_attributes,
4285};
4286
19d337df
JB		 4287static const struct tpacpi_rfk_ops wan_tprfk_ops = {
4288 .get_status = wan_get_status,
4289 .set_status = wan_set_status,
4290};
0e74dc26 4291
90d9d3c7
HMH		 4292static void wan_shutdown(void)
4293{
4294 /* Order firmware to save current state to NVRAM */
4295 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4296 TP_ACPI_WGSV_SAVE_STATE))
0978e012 4297 pr_notice("failed to save WWAN state to NVRAM\n");
bee4cd9b
HMH		 4298 else
4299 vdbg_printk(TPACPI_DBG_RFKILL,
4300 "WWAN state saved to NVRAM\n");
90d9d3c7
HMH		 4301}
4302
07431ec8
HMH		 4303static void wan_exit(void)
4304{
4305 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4306 &wan_attr_group);
19d337df
JB		 4307
4308 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
4309
4310 wan_shutdown();
07431ec8
HMH		 4311}
4312
a5763f22 4313static int __init wan_init(struct ibm_init_struct *iibm)
42adb53c 4314{
d3a6ade4 4315 int res;
d6fdd1e9
HMH		 4316 int status = 0;
4317
bee4cd9b
HMH		 4318 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4319 "initializing wan subdriver\n");
fe08bc4b 4320
e0c7dfe7 4321 TPACPI_ACPIHANDLE_INIT(hkey);
5fba344c 4322
d8fd94d9 4323 tp_features.wan = hkey_handle &&
d6fdd1e9
HMH		 4324 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4325
bee4cd9b
HMH		 4326 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4327 "wan is %s, status 0x%02x\n",
d6fdd1e9
HMH		 4328 str_supported(tp_features.wan),
4329 status);
4330
a73f3091
HMH		 4331#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4332 if (dbg_wwanemul) {
4333 tp_features.wan = 1;
0978e012 4334 pr_info("wwan switch emulation enabled\n");
a73f3091
HMH		 4335 } else
4336#endif
3a872080
HMH		 4337 if (tp_features.wan &&
4338 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4339 /* no wan hardware present in system */
4340 tp_features.wan = 0;
bee4cd9b 4341 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3a872080
HMH		 4342 "wan hardware not installed\n");
4343 }
4344
0e74dc26
HMH		 4345 if (!tp_features.wan)
4346 return 1;
4347
0e74dc26 4348 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
19d337df 4349 &wan_tprfk_ops,
0e74dc26 4350 RFKILL_TYPE_WWAN,
bee4cd9b 4351 TPACPI_RFK_WWAN_SW_NAME,
19d337df
JB		 4352 true);
4353 if (res)
4354 return res;
4355
4356 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4357 &wan_attr_group);
4358
0e74dc26 4359 if (res) {
19d337df 4360 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
0e74dc26 4361 return res;
d6fdd1e9 4362 }
fe08bc4b 4363
0e74dc26 4364 return 0;
42adb53c
JF		 4365}
4366
d3a6ade4 4367/* procfs -------------------------------------------------------------- */
887965e6 4368static int wan_read(struct seq_file *m)
42adb53c 4369{
887965e6 4370 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m);
42adb53c
JF		 4371}
4372
4373static int wan_write(char *buf)
4374{
19d337df 4375 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
42adb53c
JF		 4376}
4377
a5763f22
HMH		 4378static struct ibm_struct wan_driver_data = {
4379 .name = "wan",
4380 .read = wan_read,
4381 .write = wan_write,
d3a6ade4 4382 .exit = wan_exit,
90d9d3c7 4383 .shutdown = wan_shutdown,
a5763f22
HMH		 4384};
4385
0045c0aa
HMH		 4386/*************************************************************************
4387 * UWB subdriver
4388 */
4389
4390enum {
4391 /* ACPI GUWB/SUWB bits */
4392 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4393 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4394};
4395
bee4cd9b
HMH		 4396#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4397
19d337df 4398static int uwb_get_status(void)
0045c0aa
HMH		 4399{
4400 int status;
4401
0045c0aa
HMH		 4402#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4403 if (dbg_uwbemul)
4404 return (tpacpi_uwb_emulstate) ?
19d337df 4405 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4406#endif
4407
4408 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4409 return -EIO;
4410
4411 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
19d337df 4412 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
0045c0aa
HMH		 4413}
4414
19d337df 4415static int uwb_set_status(enum tpacpi_rfkill_state state)
0045c0aa
HMH		 4416{
4417 int status;
4418
bee4cd9b 4419 vdbg_printk(TPACPI_DBG_RFKILL,
19d337df
JB		 4420 "will attempt to %s UWB\n",
4421 (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
bee4cd9b 4422
0045c0aa
HMH		 4423#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4424 if (dbg_uwbemul) {
19d337df 4425 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
0045c0aa
HMH		 4426 return 0;
4427 }
4428#endif
4429
19d337df
JB		 4430 if (state == TPACPI_RFK_RADIO_ON)
4431 status = TP_ACPI_UWB_RADIOSSW;
4432 else
4433 status = 0;
4434
0045c0aa
HMH		 4435 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4436 return -EIO;
4437
0045c0aa
HMH		 4438 return 0;
4439}
4440
4441/* --------------------------------------------------------------------- */
4442
19d337df
JB		 4443static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
4444 .get_status = uwb_get_status,
4445 .set_status = uwb_set_status,
4446};
0045c0aa
HMH		 4447
4448static void uwb_exit(void)
4449{
19d337df 4450 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
0045c0aa
HMH		 4451}
4452
4453static int __init uwb_init(struct ibm_init_struct *iibm)
4454{
4455 int res;
4456 int status = 0;
4457
bee4cd9b
HMH		 4458 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4459 "initializing uwb subdriver\n");
0045c0aa
HMH		 4460
4461 TPACPI_ACPIHANDLE_INIT(hkey);
4462
4463 tp_features.uwb = hkey_handle &&
4464 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4465
bee4cd9b
HMH		 4466 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4467 "uwb is %s, status 0x%02x\n",
0045c0aa
HMH		 4468 str_supported(tp_features.uwb),
4469 status);
4470
4471#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4472 if (dbg_uwbemul) {
4473 tp_features.uwb = 1;
0978e012 4474 pr_info("uwb switch emulation enabled\n");
0045c0aa
HMH		 4475 } else
4476#endif
4477 if (tp_features.uwb &&
4478 !(status & TP_ACPI_UWB_HWPRESENT)) {
4479 /* no uwb hardware present in system */
4480 tp_features.uwb = 0;
4481 dbg_printk(TPACPI_DBG_INIT,
4482 "uwb hardware not installed\n");
4483 }
4484
4485 if (!tp_features.uwb)
4486 return 1;
4487
4488 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
19d337df 4489 &uwb_tprfk_ops,
0045c0aa 4490 RFKILL_TYPE_UWB,
bee4cd9b 4491 TPACPI_RFK_UWB_SW_NAME,
19d337df 4492 false);
0045c0aa
HMH		 4493 return res;
4494}
4495
4496static struct ibm_struct uwb_driver_data = {
4497 .name = "uwb",
4498 .exit = uwb_exit,
4499 .flags.experimental = 1,
4500};
4501
56b6aeb0
HMH		 4502/*************************************************************************
4503 * Video subdriver
4504 */
4505
d7c1d17d
HMH		 4506#ifdef CONFIG_THINKPAD_ACPI_VIDEO
4507
f74a27d4
HMH		 4508enum video_access_mode {
4509 TPACPI_VIDEO_NONE = 0,
4510 TPACPI_VIDEO_570, /* 570 */
4511 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4512 TPACPI_VIDEO_NEW, /* all others */
4513};
4514
4515enum { /* video status flags, based on VIDEO_570 */
4516 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4517 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4518 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4519};
4520
4521enum { /* TPACPI_VIDEO_570 constants */
4522 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4523 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4524 * video_status_flags */
4525 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4526 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4527};
4528
9a8e1738
HMH		 4529static enum video_access_mode video_supported;
4530static int video_orig_autosw;
78f81cc4 4531
f74a27d4
HMH		 4532static int video_autosw_get(void);
4533static int video_autosw_set(int enable);
4534
112a6ee0
JP		 4535TPACPI_HANDLE(vid, root,
4536 "\\_SB.PCI.AGP.VGA", /* 570 */
4537 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
4538 "\\_SB.PCI0.VID0", /* 770e */
4539 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
4540 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */
4541 "\\_SB.PCI0.AGP.VID", /* all others */
4542 ); /* R30, R31 */
4543
e0c7dfe7 4544TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
56b6aeb0 4545
a5763f22 4546static int __init video_init(struct ibm_init_struct *iibm)
1da177e4 4547{
78f81cc4
BD		 4548 int ivga;
4549
fe08bc4b
HMH		 4550 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4551
e0c7dfe7 4552 TPACPI_ACPIHANDLE_INIT(vid);
e28393c0
HMH		 4553 if (tpacpi_is_ibm())
4554 TPACPI_ACPIHANDLE_INIT(vid2);
5fba344c 4555
78f81cc4
BD		 4556 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4557 /* G41, assume IVGA doesn't change */
4558 vid_handle = vid2_handle;
4559
4560 if (!vid_handle)
4561 /* video switching not supported on R30, R31 */
efa27145 4562 video_supported = TPACPI_VIDEO_NONE;
e28393c0
HMH		 4563 else if (tpacpi_is_ibm() &&
4564 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
78f81cc4 4565 /* 570 */
efa27145 4566 video_supported = TPACPI_VIDEO_570;
e28393c0
HMH		 4567 else if (tpacpi_is_ibm() &&
4568 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
78f81cc4 4569 /* 600e/x, 770e, 770x */
efa27145 4570 video_supported = TPACPI_VIDEO_770;
78f81cc4
BD		 4571 else
4572 /* all others */
efa27145 4573 video_supported = TPACPI_VIDEO_NEW;
1da177e4 4574
fe08bc4b
HMH		 4575 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4576 str_supported(video_supported != TPACPI_VIDEO_NONE),
4577 video_supported);
4578
72a979f0 4579 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : 1;
1da177e4
LT		 4580}
4581
56b6aeb0
HMH		 4582static void video_exit(void)
4583{
83f34724
HMH		 4584 dbg_printk(TPACPI_DBG_EXIT,
4585 "restoring original video autoswitch mode\n");
4586 if (video_autosw_set(video_orig_autosw))
0978e012 4587 pr_err("error while trying to restore original "
83f34724 4588 "video autoswitch mode\n");
56b6aeb0
HMH		 4589}
4590
83f34724 4591static int video_outputsw_get(void)
1da177e4
LT		 4592{
4593 int status = 0;
4594 int i;
4595
83f34724
HMH		 4596 switch (video_supported) {
4597 case TPACPI_VIDEO_570:
4598 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4599 TP_ACPI_VIDEO_570_PHSCMD))
4600 return -EIO;
4601 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4602 break;
4603 case TPACPI_VIDEO_770:
4604 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4605 return -EIO;
4606 if (i)
4607 status |= TP_ACPI_VIDEO_S_LCD;
4608 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4609 return -EIO;
4610 if (i)
4611 status |= TP_ACPI_VIDEO_S_CRT;
4612 break;
4613 case TPACPI_VIDEO_NEW:
4614 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4615 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4616 return -EIO;
4617 if (i)
4618 status |= TP_ACPI_VIDEO_S_CRT;
4619
4620 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4621 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4622 return -EIO;
4623 if (i)
4624 status |= TP_ACPI_VIDEO_S_LCD;
4625 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4626 return -EIO;
4627 if (i)
4628 status |= TP_ACPI_VIDEO_S_DVI;
4629 break;
4630 default:
4631 return -ENOSYS;
78f81cc4
BD		 4632 }
4633
4634 return status;
4635}
1da177e4 4636
83f34724 4637static int video_outputsw_set(int status)
78f81cc4 4638{
83f34724
HMH		 4639 int autosw;
4640 int res = 0;
4641
4642 switch (video_supported) {
4643 case TPACPI_VIDEO_570:
4644 res = acpi_evalf(NULL, NULL,
4645 "\\_SB.PHS2", "vdd",
4646 TP_ACPI_VIDEO_570_PHS2CMD,
4647 status | TP_ACPI_VIDEO_570_PHS2SET);
4648 break;
4649 case TPACPI_VIDEO_770:
4650 autosw = video_autosw_get();
4651 if (autosw < 0)
4652 return autosw;
1da177e4 4653
83f34724
HMH		 4654 res = video_autosw_set(1);
4655 if (res)
4656 return res;
4657 res = acpi_evalf(vid_handle, NULL,
4658 "ASWT", "vdd", status * 0x100, 0);
4659 if (!autosw && video_autosw_set(autosw)) {
0978e012 4660 pr_err("video auto-switch left enabled due to error\n");
83f34724
HMH		 4661 return -EIO;
4662 }
4663 break;
4664 case TPACPI_VIDEO_NEW:
4665 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
35ff8b9f 4666 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
83f34724
HMH		 4667 break;
4668 default:
4669 return -ENOSYS;
4670 }
1da177e4 4671
72a979f0 4672 return (res) ? 0 : -EIO;
1da177e4
LT		 4673}
4674
83f34724 4675static int video_autosw_get(void)
78f81cc4 4676{
83f34724 4677 int autosw = 0;
78f81cc4 4678
83f34724
HMH		 4679 switch (video_supported) {
4680 case TPACPI_VIDEO_570:
4681 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4682 return -EIO;
4683 break;
4684 case TPACPI_VIDEO_770:
4685 case TPACPI_VIDEO_NEW:
4686 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4687 return -EIO;
4688 break;
4689 default:
4690 return -ENOSYS;
4691 }
78f81cc4 4692
83f34724 4693 return autosw & 1;
78f81cc4
BD		 4694}
4695
83f34724 4696static int video_autosw_set(int enable)
78f81cc4 4697{
72a979f0 4698 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0))
83f34724
HMH		 4699 return -EIO;
4700 return 0;
78f81cc4
BD		 4701}
4702
83f34724 4703static int video_outputsw_cycle(void)
78f81cc4 4704{
83f34724
HMH		 4705 int autosw = video_autosw_get();
4706 int res;
78f81cc4 4707
83f34724
HMH		 4708 if (autosw < 0)
4709 return autosw;
78f81cc4 4710
83f34724
HMH		 4711 switch (video_supported) {
4712 case TPACPI_VIDEO_570:
4713 res = video_autosw_set(1);
4714 if (res)
4715 return res;
4716 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4717 break;
4718 case TPACPI_VIDEO_770:
4719 case TPACPI_VIDEO_NEW:
4720 res = video_autosw_set(1);
4721 if (res)
4722 return res;
4723 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4724 break;
4725 default:
4726 return -ENOSYS;
4727 }
4728 if (!autosw && video_autosw_set(autosw)) {
0978e012 4729 pr_err("video auto-switch left enabled due to error\n");
83f34724 4730 return -EIO;
78f81cc4
BD		 4731 }
4732
72a979f0 4733 return (res) ? 0 : -EIO;
83f34724
HMH		 4734}
4735
4736static int video_expand_toggle(void)
4737{
4738 switch (video_supported) {
4739 case TPACPI_VIDEO_570:
72a979f0 4740 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ?
83f34724
HMH		 4741 0 : -EIO;
4742 case TPACPI_VIDEO_770:
72a979f0 4743 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ?
83f34724
HMH		 4744 0 : -EIO;
4745 case TPACPI_VIDEO_NEW:
72a979f0 4746 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ?
83f34724
HMH		 4747 0 : -EIO;
4748 default:
4749 return -ENOSYS;
4750 }
4751 /* not reached */
78f81cc4
BD		 4752}
4753
887965e6 4754static int video_read(struct seq_file *m)
56b6aeb0 4755{
83f34724 4756 int status, autosw;
56b6aeb0 4757
83f34724 4758 if (video_supported == TPACPI_VIDEO_NONE) {
887965e6
AD		 4759 seq_printf(m, "status:\t\tnot supported\n");
4760 return 0;
56b6aeb0
HMH		 4761 }
4762
b525c06c
HMH		 4763 /* Even reads can crash X.org, so... */
4764 if (!capable(CAP_SYS_ADMIN))
4765 return -EPERM;
4766
83f34724
HMH		 4767 status = video_outputsw_get();
4768 if (status < 0)
4769 return status;
4770
4771 autosw = video_autosw_get();
4772 if (autosw < 0)
4773 return autosw;
4774
887965e6
AD		 4775 seq_printf(m, "status:\t\tsupported\n");
4776 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
4777 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
efa27145 4778 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4779 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
4780 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
4781 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
4782 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
efa27145 4783 if (video_supported == TPACPI_VIDEO_NEW)
887965e6
AD		 4784 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
4785 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
4786 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
56b6aeb0 4787
887965e6 4788 return 0;
56b6aeb0
HMH		 4789}
4790
78f81cc4 4791static int video_write(char *buf)
1da177e4
LT		 4792{
4793 char *cmd;
4794 int enable, disable, status;
83f34724 4795 int res;
1da177e4 4796
83f34724 4797 if (video_supported == TPACPI_VIDEO_NONE)
78f81cc4
BD		 4798 return -ENODEV;
4799
b525c06c
HMH		 4800 /* Even reads can crash X.org, let alone writes... */
4801 if (!capable(CAP_SYS_ADMIN))
4802 return -EPERM;
4803
83f34724
HMH		 4804 enable = 0;
4805 disable = 0;
1da177e4
LT		 4806
4807 while ((cmd = next_cmd(&buf))) {
4808 if (strlencmp(cmd, "lcd_enable") == 0) {
83f34724 4809 enable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4810 } else if (strlencmp(cmd, "lcd_disable") == 0) {
83f34724 4811 disable |= TP_ACPI_VIDEO_S_LCD;
1da177e4 4812 } else if (strlencmp(cmd, "crt_enable") == 0) {
83f34724 4813 enable |= TP_ACPI_VIDEO_S_CRT;
1da177e4 4814 } else if (strlencmp(cmd, "crt_disable") == 0) {
83f34724 4815 disable |= TP_ACPI_VIDEO_S_CRT;
efa27145 4816 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4817 strlencmp(cmd, "dvi_enable") == 0) {
83f34724 4818 enable |= TP_ACPI_VIDEO_S_DVI;
efa27145 4819 } else if (video_supported == TPACPI_VIDEO_NEW &&
78f81cc4 4820 strlencmp(cmd, "dvi_disable") == 0) {
83f34724 4821 disable |= TP_ACPI_VIDEO_S_DVI;
1da177e4 4822 } else if (strlencmp(cmd, "auto_enable") == 0) {
83f34724
HMH		 4823 res = video_autosw_set(1);
4824 if (res)
4825 return res;
1da177e4 4826 } else if (strlencmp(cmd, "auto_disable") == 0) {
83f34724
HMH		 4827 res = video_autosw_set(0);
4828 if (res)
4829 return res;
1da177e4 4830 } else if (strlencmp(cmd, "video_switch") == 0) {
83f34724
HMH		 4831 res = video_outputsw_cycle();
4832 if (res)
4833 return res;
1da177e4 4834 } else if (strlencmp(cmd, "expand_toggle") == 0) {
83f34724
HMH		 4835 res = video_expand_toggle();
4836 if (res)
4837 return res;
1da177e4
LT		 4838 } else
4839 return -EINVAL;
4840 }
4841
4842 if (enable || disable) {
83f34724
HMH		 4843 status = video_outputsw_get();
4844 if (status < 0)
4845 return status;
4846 res = video_outputsw_set((status & ~disable) | enable);
4847 if (res)
4848 return res;
1da177e4
LT		 4849 }
4850
4851 return 0;
4852}
4853
a5763f22
HMH		 4854static struct ibm_struct video_driver_data = {
4855 .name = "video",
4856 .read = video_read,
4857 .write = video_write,
4858 .exit = video_exit,
4859};
4860
d7c1d17d
HMH		 4861#endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4862
56b6aeb0
HMH		 4863/*************************************************************************
4864 * Light (thinklight) subdriver
4865 */
1da177e4 4866
e0c7dfe7
HMH		 4867TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4868TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
56b6aeb0 4869
4fa6811b
HMH		 4870static int light_get_status(void)
4871{
4872 int status = 0;
4873
4874 if (tp_features.light_status) {
4875 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4876 return -EIO;
4877 return (!!status);
4878 }
4879
4880 return -ENXIO;
4881}
4882
4883static int light_set_status(int status)
4884{
4885 int rc;
4886
4887 if (tp_features.light) {
4888 if (cmos_handle) {
4889 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
72a979f0 4890 (status) ?
4fa6811b
HMH		 4891 TP_CMOS_THINKLIGHT_ON :
4892 TP_CMOS_THINKLIGHT_OFF);
4893 } else {
4894 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
72a979f0 4895 (status) ? 1 : 0);
4fa6811b 4896 }
72a979f0 4897 return (rc) ? 0 : -EIO;
4fa6811b
HMH		 4898 }
4899
4900 return -ENXIO;
4901}
4902
e306501d
HMH		 4903static void light_set_status_worker(struct work_struct *work)
4904{
4905 struct tpacpi_led_classdev *data =
4906 container_of(work, struct tpacpi_led_classdev, work);
4907
4908 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 4909 light_set_status((data->new_state != TPACPI_LED_OFF));
e306501d
HMH		 4910}
4911
4912static void light_sysfs_set(struct led_classdev *led_cdev,
4913 enum led_brightness brightness)
4914{
4915 struct tpacpi_led_classdev *data =
4916 container_of(led_cdev,
4917 struct tpacpi_led_classdev,
4918 led_classdev);
75bd3bf2
HMH		 4919 data->new_state = (brightness != LED_OFF) ?
4920 TPACPI_LED_ON : TPACPI_LED_OFF;
e0e3c061 4921 queue_work(tpacpi_wq, &data->work);
e306501d
HMH		 4922}
4923
4924static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4925{
72a979f0 4926 return (light_get_status() == 1) ? LED_FULL : LED_OFF;
e306501d
HMH		 4927}
4928
4929static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4930 .led_classdev = {
4931 .name = "tpacpi::thinklight",
4932 .brightness_set = &light_sysfs_set,
4933 .brightness_get = &light_sysfs_get,
4934 }
4935};
4936
a5763f22 4937static int __init light_init(struct ibm_init_struct *iibm)
1da177e4 4938{
9c0a76e1 4939 int rc;
e306501d 4940
fe08bc4b
HMH		 4941 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4942
e28393c0
HMH		 4943 if (tpacpi_is_ibm()) {
4944 TPACPI_ACPIHANDLE_INIT(ledb);
4945 TPACPI_ACPIHANDLE_INIT(lght);
4946 }
e0c7dfe7 4947 TPACPI_ACPIHANDLE_INIT(cmos);
e306501d 4948 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
5fba344c 4949
78f81cc4 4950 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
d8fd94d9 4951 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
78f81cc4 4952
d8fd94d9 4953 if (tp_features.light)
78f81cc4
BD		 4954 /* light status not supported on
4955 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
d8fd94d9
HMH		 4956 tp_features.light_status =
4957 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
1da177e4 4958
9c0a76e1
HMH		 4959 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4960 str_supported(tp_features.light),
4961 str_supported(tp_features.light_status));
fe08bc4b 4962
9c0a76e1
HMH		 4963 if (!tp_features.light)
4964 return 1;
4965
4966 rc = led_classdev_register(&tpacpi_pdev->dev,
4967 &tpacpi_led_thinklight.led_classdev);
e306501d
HMH		 4968
4969 if (rc < 0) {
4970 tp_features.light = 0;
4971 tp_features.light_status = 0;
9c0a76e1
HMH		 4972 } else {
4973 rc = 0;
e306501d 4974 }
9c0a76e1 4975
e306501d
HMH		 4976 return rc;
4977}
4978
4979static void light_exit(void)
4980{
4981 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
6d394e19 4982 flush_workqueue(tpacpi_wq);
1da177e4
LT		 4983}
4984
887965e6 4985static int light_read(struct seq_file *m)
1da177e4 4986{
4fa6811b 4987 int status;
1da177e4 4988
d8fd94d9 4989 if (!tp_features.light) {
887965e6 4990 seq_printf(m, "status:\t\tnot supported\n");
d8fd94d9 4991 } else if (!tp_features.light_status) {
887965e6
AD		 4992 seq_printf(m, "status:\t\tunknown\n");
4993 seq_printf(m, "commands:\ton, off\n");
78f81cc4 4994 } else {
4fa6811b
HMH		 4995 status = light_get_status();
4996 if (status < 0)
4997 return status;
887965e6
AD		 4998 seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
4999 seq_printf(m, "commands:\ton, off\n");
78f81cc4 5000 }
1da177e4 5001
887965e6 5002 return 0;
1da177e4
LT		 5003}
5004
78f81cc4 5005static int light_write(char *buf)
1da177e4 5006{
1da177e4 5007 char *cmd;
4fa6811b 5008 int newstatus = 0;
78f81cc4 5009
d8fd94d9 5010 if (!tp_features.light)
78f81cc4
BD		 5011 return -ENODEV;
5012
1da177e4
LT		 5013 while ((cmd = next_cmd(&buf))) {
5014 if (strlencmp(cmd, "on") == 0) {
4fa6811b 5015 newstatus = 1;
1da177e4 5016 } else if (strlencmp(cmd, "off") == 0) {
4fa6811b 5017 newstatus = 0;
1da177e4
LT		 5018 } else
5019 return -EINVAL;
1da177e4
LT		 5020 }
5021
4fa6811b 5022 return light_set_status(newstatus);
1da177e4
LT		 5023}
5024
a5763f22
HMH		 5025static struct ibm_struct light_driver_data = {
5026 .name = "light",
5027 .read = light_read,
5028 .write = light_write,
e306501d 5029 .exit = light_exit,
a5763f22
HMH		 5030};
5031
56b6aeb0
HMH		 5032/*************************************************************************
5033 * CMOS subdriver
5034 */
5035
b616004c
HMH		 5036/* sysfs cmos_command -------------------------------------------------- */
5037static ssize_t cmos_command_store(struct device *dev,
5038 struct device_attribute *attr,
5039 const char *buf, size_t count)
5040{
5041 unsigned long cmos_cmd;
5042 int res;
5043
5044 if (parse_strtoul(buf, 21, &cmos_cmd))
5045 return -EINVAL;
5046
5047 res = issue_thinkpad_cmos_command(cmos_cmd);
72a979f0 5048 return (res) ? res : count;
b616004c
HMH		 5049}
5050
5051static struct device_attribute dev_attr_cmos_command =
5052 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
5053
5054/* --------------------------------------------------------------------- */
5055
a5763f22 5056static int __init cmos_init(struct ibm_init_struct *iibm)
5fba344c 5057{
b616004c
HMH		 5058 int res;
5059
fe08bc4b
HMH		 5060 vdbg_printk(TPACPI_DBG_INIT,
5061 "initializing cmos commands subdriver\n");
5062
e0c7dfe7 5063 TPACPI_ACPIHANDLE_INIT(cmos);
5fba344c 5064
fe08bc4b
HMH		 5065 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
5066 str_supported(cmos_handle != NULL));
b616004c
HMH		 5067
5068 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
5069 if (res)
5070 return res;
5071
72a979f0 5072 return (cmos_handle) ? 0 : 1;
5fba344c
HMH		 5073}
5074
b616004c
HMH		 5075static void cmos_exit(void)
5076{
5077 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
5078}
5079
887965e6 5080static int cmos_read(struct seq_file *m)
1da177e4 5081{
78f81cc4
BD		 5082 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
5083 R30, R31, T20-22, X20-21 */
1da177e4 5084 if (!cmos_handle)
887965e6 5085 seq_printf(m, "status:\t\tnot supported\n");
1da177e4 5086 else {
887965e6
AD		 5087 seq_printf(m, "status:\t\tsupported\n");
5088 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
1da177e4
LT		 5089 }
5090
887965e6 5091 return 0;
1da177e4
LT		 5092}
5093
78f81cc4 5094static int cmos_write(char *buf)
1da177e4
LT		 5095{
5096 char *cmd;
c9bea99c 5097 int cmos_cmd, res;
1da177e4
LT		 5098
5099 while ((cmd = next_cmd(&buf))) {
78f81cc4
BD		 5100 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
5101 cmos_cmd >= 0 && cmos_cmd <= 21) {
1da177e4
LT		 5102 /* cmos_cmd set */
5103 } else
5104 return -EINVAL;
5105
c9bea99c
HMH		 5106 res = issue_thinkpad_cmos_command(cmos_cmd);
5107 if (res)
5108 return res;
1da177e4
LT		 5109 }
5110
5111 return 0;
78f81cc4
BD		 5112}
5113
a5763f22
HMH		 5114static struct ibm_struct cmos_driver_data = {
5115 .name = "cmos",
5116 .read = cmos_read,
5117 .write = cmos_write,
b616004c 5118 .exit = cmos_exit,
a5763f22 5119};
56b6aeb0
HMH		 5120
5121/*************************************************************************
5122 * LED subdriver
5123 */
5124
f74a27d4
HMH		 5125enum led_access_mode {
5126 TPACPI_LED_NONE = 0,
5127 TPACPI_LED_570, /* 570 */
5128 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5129 TPACPI_LED_NEW, /* all others */
5130};
5131
5132enum { /* For TPACPI_LED_OLD */
5133 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
5134 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
5135 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
5136};
5137
9a8e1738 5138static enum led_access_mode led_supported;
78f81cc4 5139
2cbb5c8f 5140static acpi_handle led_handle;
56b6aeb0 5141
f21179a4 5142#define TPACPI_LED_NUMLEDS 16
af116101
HMH		 5143static struct tpacpi_led_classdev *tpacpi_leds;
5144static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
e3aa51fe 5145static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
af116101
HMH		 5146 /* there's a limit of 19 chars + NULL before 2.6.26 */
5147 "tpacpi::power",
5148 "tpacpi:orange:batt",
5149 "tpacpi:green:batt",
5150 "tpacpi::dock_active",
5151 "tpacpi::bay_active",
5152 "tpacpi::dock_batt",
5153 "tpacpi::unknown_led",
5154 "tpacpi::standby",
f21179a4
HMH		 5155 "tpacpi::dock_status1",
5156 "tpacpi::dock_status2",
5157 "tpacpi::unknown_led2",
5158 "tpacpi::unknown_led3",
5159 "tpacpi::thinkvantage",
af116101 5160};
f21179a4 5161#define TPACPI_SAFE_LEDS 0x1081U
a4d5effc
HMH		 5162
5163static inline bool tpacpi_is_led_restricted(const unsigned int led)
5164{
5165#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5166 return false;
5167#else
f21179a4 5168 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
a4d5effc
HMH		 5169#endif
5170}
af116101 5171
24e45bbe 5172static int led_get_status(const unsigned int led)
4fa6811b
HMH		 5173{
5174 int status;
af116101 5175 enum led_status_t led_s;
4fa6811b
HMH		 5176
5177 switch (led_supported) {
5178 case TPACPI_LED_570:
5179 if (!acpi_evalf(ec_handle,
5180 &status, "GLED", "dd", 1 << led))
5181 return -EIO;
72a979f0 5182 led_s = (status == 0) ?
4fa6811b 5183 TPACPI_LED_OFF :
72a979f0 5184 ((status == 1) ?
4fa6811b
HMH		 5185 TPACPI_LED_ON :
5186 TPACPI_LED_BLINK);
af116101
HMH		 5187 tpacpi_led_state_cache[led] = led_s;
5188 return led_s;
4fa6811b
HMH		 5189 default:
5190 return -ENXIO;
5191 }
5192
5193 /* not reached */
5194}
5195
24e45bbe
HMH		 5196static int led_set_status(const unsigned int led,
5197 const enum led_status_t ledstatus)
4fa6811b
HMH		 5198{
5199 /* off, on, blink. Index is led_status_t */
24e45bbe
HMH		 5200 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5201 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4fa6811b
HMH		 5202
5203 int rc = 0;
5204
5205 switch (led_supported) {
5206 case TPACPI_LED_570:
24e45bbe 5207 /* 570 */
a4d5effc 5208 if (unlikely(led > 7))
24e45bbe 5209 return -EINVAL;
a4d5effc
HMH		 5210 if (unlikely(tpacpi_is_led_restricted(led)))
5211 return -EPERM;
24e45bbe
HMH		 5212 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5213 (1 << led), led_sled_arg1[ledstatus]))
5214 rc = -EIO;
5215 break;
4fa6811b 5216 case TPACPI_LED_OLD:
24e45bbe 5217 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
a4d5effc 5218 if (unlikely(led > 7))
24e45bbe 5219 return -EINVAL;
a4d5effc
HMH		 5220 if (unlikely(tpacpi_is_led_restricted(led)))
5221 return -EPERM;
24e45bbe
HMH		 5222 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5223 if (rc >= 0)
5224 rc = ec_write(TPACPI_LED_EC_HLBL,
5225 (ledstatus == TPACPI_LED_BLINK) << led);
5226 if (rc >= 0)
5227 rc = ec_write(TPACPI_LED_EC_HLCL,
5228 (ledstatus != TPACPI_LED_OFF) << led);
5229 break;
4fa6811b 5230 case TPACPI_LED_NEW:
24e45bbe 5231 /* all others */
a4d5effc
HMH		 5232 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5233 return -EINVAL;
5234 if (unlikely(tpacpi_is_led_restricted(led)))
5235 return -EPERM;
24e45bbe
HMH		 5236 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5237 led, led_led_arg1[ledstatus]))
5238 rc = -EIO;
5239 break;
4fa6811b
HMH		 5240 default:
5241 rc = -ENXIO;
5242 }
5243
af116101
HMH		 5244 if (!rc)
5245 tpacpi_led_state_cache[led] = ledstatus;
5246
5247 return rc;
5248}
5249
af116101
HMH		 5250static void led_set_status_worker(struct work_struct *work)
5251{
5252 struct tpacpi_led_classdev *data =
5253 container_of(work, struct tpacpi_led_classdev, work);
5254
5255 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
75bd3bf2 5256 led_set_status(data->led, data->new_state);
af116101
HMH		 5257}
5258
5259static void led_sysfs_set(struct led_classdev *led_cdev,
5260 enum led_brightness brightness)
5261{
5262 struct tpacpi_led_classdev *data = container_of(led_cdev,
5263 struct tpacpi_led_classdev, led_classdev);
5264
75bd3bf2
HMH		 5265 if (brightness == LED_OFF)
5266 data->new_state = TPACPI_LED_OFF;
5267 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
5268 data->new_state = TPACPI_LED_ON;
5269 else
5270 data->new_state = TPACPI_LED_BLINK;
5271
e0e3c061 5272 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5273}
5274
5275static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5276 unsigned long *delay_on, unsigned long *delay_off)
5277{
5278 struct tpacpi_led_classdev *data = container_of(led_cdev,
5279 struct tpacpi_led_classdev, led_classdev);
5280
5281 /* Can we choose the flash rate? */
5282 if (*delay_on == 0 && *delay_off == 0) {
5283 /* yes. set them to the hardware blink rate (1 Hz) */
5284 *delay_on = 500; /* ms */
5285 *delay_off = 500; /* ms */
5286 } else if ((*delay_on != 500) || (*delay_off != 500))
5287 return -EINVAL;
5288
75bd3bf2 5289 data->new_state = TPACPI_LED_BLINK;
e0e3c061 5290 queue_work(tpacpi_wq, &data->work);
af116101
HMH		 5291
5292 return 0;
5293}
5294
5295static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5296{
5297 int rc;
5298
5299 struct tpacpi_led_classdev *data = container_of(led_cdev,
5300 struct tpacpi_led_classdev, led_classdev);
5301
5302 rc = led_get_status(data->led);
5303
5304 if (rc == TPACPI_LED_OFF || rc < 0)
5305 rc = LED_OFF; /* no error handling in led class :( */
5306 else
5307 rc = LED_FULL;
5308
4fa6811b
HMH		 5309 return rc;
5310}
5311
af116101
HMH		 5312static void led_exit(void)
5313{
5314 unsigned int i;
5315
5316 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5317 if (tpacpi_leds[i].led_classdev.name)
5318 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5319 }
5320
e03e389d 5321 flush_workqueue(tpacpi_wq);
af116101 5322 kfree(tpacpi_leds);
af116101
HMH		 5323}
5324
a4d5effc
HMH		 5325static int __init tpacpi_init_led(unsigned int led)
5326{
5327 int rc;
5328
5329 tpacpi_leds[led].led = led;
5330
f21179a4
HMH		 5331 /* LEDs with no name don't get registered */
5332 if (!tpacpi_led_names[led])
5333 return 0;
5334
a4d5effc
HMH		 5335 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
5336 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5337 if (led_supported == TPACPI_LED_570)
5338 tpacpi_leds[led].led_classdev.brightness_get =
5339 &led_sysfs_get;
5340
5341 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5342
5343 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
5344
5345 rc = led_classdev_register(&tpacpi_pdev->dev,
5346 &tpacpi_leds[led].led_classdev);
5347 if (rc < 0)
5348 tpacpi_leds[led].led_classdev.name = NULL;
5349
5350 return rc;
5351}
5352
f21179a4
HMH		 5353static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5354 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5355 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5356 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5357
5358 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5359 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5360 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5361 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5362 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5363 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5364 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5365 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5366
5367 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5368 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5369 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5370 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5371 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5372
5373 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5374 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5375 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5376 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5377
5378 /* (1) - may have excess leds enabled on MSB */
5379
5380 /* Defaults (order matters, keep last, don't reorder!) */
5381 { /* Lenovo */
5382 .vendor = PCI_VENDOR_ID_LENOVO,
5383 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5384 .quirks = 0x1fffU,
5385 },
5386 { /* IBM ThinkPads with no EC version string */
5387 .vendor = PCI_VENDOR_ID_IBM,
5388 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5389 .quirks = 0x00ffU,
5390 },
5391 { /* IBM ThinkPads with EC version string */
5392 .vendor = PCI_VENDOR_ID_IBM,
5393 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5394 .quirks = 0x00bfU,
5395 },
5396};
5397
5398#undef TPACPI_LEDQ_IBM
5399#undef TPACPI_LEDQ_LNV
5400
2cbb5c8f
HMH		 5401static enum led_access_mode __init led_init_detect_mode(void)
5402{
5403 acpi_status status;
5404
5405 if (tpacpi_is_ibm()) {
5406 /* 570 */
5407 status = acpi_get_handle(ec_handle, "SLED", &led_handle);
5408 if (ACPI_SUCCESS(status))
5409 return TPACPI_LED_570;
5410
5411 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5412 status = acpi_get_handle(ec_handle, "SYSL", &led_handle);
5413 if (ACPI_SUCCESS(status))
5414 return TPACPI_LED_OLD;
5415 }
5416
5417 /* most others */
5418 status = acpi_get_handle(ec_handle, "LED", &led_handle);
5419 if (ACPI_SUCCESS(status))
5420 return TPACPI_LED_NEW;
5421
5422 /* R30, R31, and unknown firmwares */
5423 led_handle = NULL;
5424 return TPACPI_LED_NONE;
5425}
5426
a5763f22 5427static int __init led_init(struct ibm_init_struct *iibm)
78f81cc4 5428{
af116101
HMH		 5429 unsigned int i;
5430 int rc;
f21179a4 5431 unsigned long useful_leds;
af116101 5432
fe08bc4b
HMH		 5433 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5434
2cbb5c8f 5435 led_supported = led_init_detect_mode();
78f81cc4 5436
fcb44e12
AL		 5437 if (led_supported != TPACPI_LED_NONE) {
5438 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5439 ARRAY_SIZE(led_useful_qtable));
5440
5441 if (!useful_leds) {
5442 led_handle = NULL;
5443 led_supported = TPACPI_LED_NONE;
5444 }
5445 }
5446
fe08bc4b
HMH		 5447 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5448 str_supported(led_supported), led_supported);
5449
f21179a4
HMH		 5450 if (led_supported == TPACPI_LED_NONE)
5451 return 1;
5452
af116101
HMH		 5453 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
5454 GFP_KERNEL);
5455 if (!tpacpi_leds) {
0978e012 5456 pr_err("Out of memory for LED data\n");
af116101
HMH		 5457 return -ENOMEM;
5458 }
5459
5460 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
edf2d778
AL		 5461 tpacpi_leds[i].led = -1;
5462
f21179a4
HMH		 5463 if (!tpacpi_is_led_restricted(i) &&
5464 test_bit(i, &useful_leds)) {
a4d5effc
HMH		 5465 rc = tpacpi_init_led(i);
5466 if (rc < 0) {
5467 led_exit();
5468 return rc;
5469 }
af116101
HMH		 5470 }
5471 }
5472
a4d5effc 5473#ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
0978e012
JP		 5474 pr_notice("warning: userspace override of important "
5475 "firmware LEDs is enabled\n");
a4d5effc 5476#endif
f21179a4 5477 return 0;
78f81cc4
BD		 5478}
5479
4fa6811b
HMH		 5480#define str_led_status(s) \
5481 ((s) == TPACPI_LED_OFF ? "off" : \
5482 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
78f81cc4 5483
887965e6 5484static int led_read(struct seq_file *m)
1da177e4 5485{
78f81cc4 5486 if (!led_supported) {
887965e6
AD		 5487 seq_printf(m, "status:\t\tnot supported\n");
5488 return 0;
78f81cc4 5489 }
887965e6 5490 seq_printf(m, "status:\t\tsupported\n");
78f81cc4 5491
efa27145 5492 if (led_supported == TPACPI_LED_570) {
78f81cc4
BD		 5493 /* 570 */
5494 int i, status;
5495 for (i = 0; i < 8; i++) {
4fa6811b
HMH		 5496 status = led_get_status(i);
5497 if (status < 0)
78f81cc4 5498 return -EIO;
887965e6 5499 seq_printf(m, "%d:\t\t%s\n",
4fa6811b 5500 i, str_led_status(status));
78f81cc4
BD		 5501 }
5502 }
5503
887965e6 5504 seq_printf(m, "commands:\t"
f21179a4 5505 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
1da177e4 5506
887965e6 5507 return 0;
1da177e4
LT		 5508}
5509
78f81cc4 5510static int led_write(char *buf)
1da177e4
LT		 5511{
5512 char *cmd;
4fa6811b
HMH		 5513 int led, rc;
5514 enum led_status_t s;
78f81cc4
BD		 5515
5516 if (!led_supported)
5517 return -ENODEV;
1da177e4
LT		 5518
5519 while ((cmd = next_cmd(&buf))) {
edf2d778 5520 if (sscanf(cmd, "%d", &led) != 1)
1da177e4
LT		 5521 return -EINVAL;
5522
edf2d778
AL		 5523 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1) ||
5524 tpacpi_leds[led].led < 0)
5525 return -ENODEV;
5526
78f81cc4 5527 if (strstr(cmd, "off")) {
4fa6811b 5528 s = TPACPI_LED_OFF;
1da177e4 5529 } else if (strstr(cmd, "on")) {
4fa6811b 5530 s = TPACPI_LED_ON;
78f81cc4 5531 } else if (strstr(cmd, "blink")) {
4fa6811b 5532 s = TPACPI_LED_BLINK;
78f81cc4 5533 } else {
4fa6811b 5534 return -EINVAL;
78f81cc4 5535 }
4fa6811b
HMH		 5536
5537 rc = led_set_status(led, s);
5538 if (rc < 0)
5539 return rc;
78f81cc4
BD		 5540 }
5541
5542 return 0;
5543}
5544
a5763f22
HMH		 5545static struct ibm_struct led_driver_data = {
5546 .name = "led",
5547 .read = led_read,
5548 .write = led_write,
af116101 5549 .exit = led_exit,
a5763f22
HMH		 5550};
5551
56b6aeb0
HMH		 5552/*************************************************************************
5553 * Beep subdriver
5554 */
5555
e0c7dfe7 5556TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
56b6aeb0 5557
60201732
HMH		 5558#define TPACPI_BEEP_Q1 0x0001
5559
5560static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5561 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5562 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5563};
5564
a5763f22 5565static int __init beep_init(struct ibm_init_struct *iibm)
5fba344c 5566{
60201732
HMH		 5567 unsigned long quirks;
5568
fe08bc4b
HMH		 5569 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5570
e0c7dfe7 5571 TPACPI_ACPIHANDLE_INIT(beep);
5fba344c 5572
fe08bc4b
HMH		 5573 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5574 str_supported(beep_handle != NULL));
5575
60201732
HMH		 5576 quirks = tpacpi_check_quirks(beep_quirk_table,
5577 ARRAY_SIZE(beep_quirk_table));
5578
5579 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5580
72a979f0 5581 return (beep_handle) ? 0 : 1;
5fba344c
HMH		 5582}
5583
887965e6 5584static int beep_read(struct seq_file *m)
78f81cc4 5585{
78f81cc4 5586 if (!beep_handle)
887965e6 5587 seq_printf(m, "status:\t\tnot supported\n");
78f81cc4 5588 else {
887965e6
AD		 5589 seq_printf(m, "status:\t\tsupported\n");
5590 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
78f81cc4
BD		 5591 }
5592
887965e6 5593 return 0;
78f81cc4
BD		 5594}
5595
5596static int beep_write(char *buf)
5597{
5598 char *cmd;
5599 int beep_cmd;
5600
5601 if (!beep_handle)
5602 return -ENODEV;
5603
5604 while ((cmd = next_cmd(&buf))) {
5605 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5606 beep_cmd >= 0 && beep_cmd <= 17) {
5607 /* beep_cmd set */
5608 } else
5609 return -EINVAL;
60201732
HMH		 5610 if (tp_features.beep_needs_two_args) {
5611 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5612 beep_cmd, 0))
5613 return -EIO;
5614 } else {
5615 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5616 beep_cmd))
5617 return -EIO;
5618 }
78f81cc4
BD		 5619 }
5620
5621 return 0;
5622}
5623
a5763f22
HMH		 5624static struct ibm_struct beep_driver_data = {
5625 .name = "beep",
5626 .read = beep_read,
5627 .write = beep_write,
5628};
5629
56b6aeb0
HMH		 5630/*************************************************************************
5631 * Thermal subdriver
5632 */
78f81cc4 5633
f74a27d4
HMH		 5634enum thermal_access_mode {
5635 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5636 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5637 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5638 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5639 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5640};
5641
5642enum { /* TPACPI_THERMAL_TPEC_* */
5643 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5644 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5645 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
9ebd9e83
HMH		 5646
5647 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
f74a27d4
HMH		 5648};
5649
9ebd9e83 5650
f74a27d4
HMH		 5651#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5652struct ibm_thermal_sensors_struct {
5653 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5654};
5655
a26f878a 5656static enum thermal_access_mode thermal_read_mode;
78f81cc4 5657
b21a15f6
HMH		 5658/* idx is zero-based */
5659static int thermal_get_sensor(int idx, s32 *value)
5660{
5661 int t;
5662 s8 tmp;
5663 char tmpi[5];
5664
5665 t = TP_EC_THERMAL_TMP0;
5666
5667 switch (thermal_read_mode) {
5668#if TPACPI_MAX_THERMAL_SENSORS >= 16
5669 case TPACPI_THERMAL_TPEC_16:
5670 if (idx >= 8 && idx <= 15) {
5671 t = TP_EC_THERMAL_TMP8;
5672 idx -= 8;
5673 }
5674 /* fallthrough */
5675#endif
5676 case TPACPI_THERMAL_TPEC_8:
5677 if (idx <= 7) {
5678 if (!acpi_ec_read(t + idx, &tmp))
5679 return -EIO;
5680 *value = tmp * 1000;
5681 return 0;
5682 }
5683 break;
5684
5685 case TPACPI_THERMAL_ACPI_UPDT:
5686 if (idx <= 7) {
5687 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5688 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5689 return -EIO;
5690 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5691 return -EIO;
5692 *value = (t - 2732) * 100;
5693 return 0;
5694 }
5695 break;
5696
5697 case TPACPI_THERMAL_ACPI_TMP07:
5698 if (idx <= 7) {
5699 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5700 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5701 return -EIO;
5702 if (t > 127 || t < -127)
5703 t = TP_EC_THERMAL_TMP_NA;
5704 *value = t * 1000;
5705 return 0;
5706 }
5707 break;
5708
5709 case TPACPI_THERMAL_NONE:
5710 default:
5711 return -ENOSYS;
5712 }
5713
5714 return -EINVAL;
5715}
5716
5717static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5718{
5719 int res, i;
5720 int n;
5721
5722 n = 8;
5723 i = 0;
5724
5725 if (!s)
5726 return -EINVAL;
5727
5728 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5729 n = 16;
5730
35ff8b9f 5731 for (i = 0 ; i < n; i++) {
b21a15f6
HMH		 5732 res = thermal_get_sensor(i, &s->temp[i]);
5733 if (res)
5734 return res;
5735 }
5736
5737 return n;
5738}
f74a27d4 5739
9ebd9e83
HMH		 5740static void thermal_dump_all_sensors(void)
5741{
5742 int n, i;
5743 struct ibm_thermal_sensors_struct t;
5744
5745 n = thermal_get_sensors(&t);
5746 if (n <= 0)
5747 return;
5748
0978e012 5749 pr_notice("temperatures (Celsius):");
9ebd9e83
HMH		 5750
5751 for (i = 0; i < n; i++) {
5752 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
0978e012 5753 pr_cont(" %d", (int)(t.temp[i] / 1000));
9ebd9e83 5754 else
0978e012 5755 pr_cont(" N/A");
9ebd9e83
HMH		 5756 }
5757
0978e012 5758 pr_cont("\n");
9ebd9e83
HMH		 5759}
5760
2c37aa4e
HMH		 5761/* sysfs temp##_input -------------------------------------------------- */
5762
5763static ssize_t thermal_temp_input_show(struct device *dev,
5764 struct device_attribute *attr,
5765 char *buf)
5766{
5767 struct sensor_device_attribute *sensor_attr =
5768 to_sensor_dev_attr(attr);
5769 int idx = sensor_attr->index;
5770 s32 value;
5771 int res;
5772
5773 res = thermal_get_sensor(idx, &value);
5774 if (res)
5775 return res;
9ebd9e83 5776 if (value == TPACPI_THERMAL_SENSOR_NA)
2c37aa4e
HMH		 5777 return -ENXIO;
5778
5779 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5780}
5781
5782#define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
35ff8b9f
HMH		 5783 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5784 thermal_temp_input_show, NULL, _idxB)
2c37aa4e
HMH		 5785
5786static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5787 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5788 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5789 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5790 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5791 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5792 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5793 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5794 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5795 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5796 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5797 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5798 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5799 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5800 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5801 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5802 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5803};
5804
5805#define THERMAL_ATTRS(X) \
5806 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5807
5808static struct attribute *thermal_temp_input_attr[] = {
5809 THERMAL_ATTRS(8),
5810 THERMAL_ATTRS(9),
5811 THERMAL_ATTRS(10),
5812 THERMAL_ATTRS(11),
5813 THERMAL_ATTRS(12),
5814 THERMAL_ATTRS(13),
5815 THERMAL_ATTRS(14),
5816 THERMAL_ATTRS(15),
5817 THERMAL_ATTRS(0),
5818 THERMAL_ATTRS(1),
5819 THERMAL_ATTRS(2),
5820 THERMAL_ATTRS(3),
5821 THERMAL_ATTRS(4),
5822 THERMAL_ATTRS(5),
5823 THERMAL_ATTRS(6),
5824 THERMAL_ATTRS(7),
5825 NULL
5826};
5827
5828static const struct attribute_group thermal_temp_input16_group = {
5829 .attrs = thermal_temp_input_attr
5830};
5831
5832static const struct attribute_group thermal_temp_input8_group = {
5833 .attrs = &thermal_temp_input_attr[8]
5834};
5835
5836#undef THERMAL_SENSOR_ATTR_TEMP
5837#undef THERMAL_ATTRS
5838
5839/* --------------------------------------------------------------------- */
5840
a5763f22 5841static int __init thermal_init(struct ibm_init_struct *iibm)
78f81cc4 5842{
60eb0b35
HMH		 5843 u8 t, ta1, ta2;
5844 int i;
5fba344c 5845 int acpi_tmp7;
2c37aa4e 5846 int res;
5fba344c 5847
fe08bc4b
HMH		 5848 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5849
5fba344c 5850 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
60eb0b35 5851
3d6f99ca 5852 if (thinkpad_id.ec_model) {
60eb0b35
HMH		 5853 /*
5854 * Direct EC access mode: sensors at registers
5855 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5856 * non-implemented, thermal sensors return 0x80 when
5857 * not available
5858 */
78f81cc4 5859
60eb0b35
HMH		 5860 ta1 = ta2 = 0;
5861 for (i = 0; i < 8; i++) {
04cc862c 5862 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
60eb0b35
HMH		 5863 ta1 |= t;
5864 } else {
5865 ta1 = 0;
5866 break;
5867 }
04cc862c 5868 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
60eb0b35
HMH		 5869 ta2 |= t;
5870 } else {
5871 ta1 = 0;
5872 break;
5873 }
5874 }
5875 if (ta1 == 0) {
5876 /* This is sheer paranoia, but we handle it anyway */
5877 if (acpi_tmp7) {
0978e012 5878 pr_err("ThinkPad ACPI EC access misbehaving, "
35ff8b9f
HMH		 5879 "falling back to ACPI TMPx access "
5880 "mode\n");
efa27145 5881 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
60eb0b35 5882 } else {
0978e012 5883 pr_err("ThinkPad ACPI EC access misbehaving, "
60eb0b35 5884 "disabling thermal sensors access\n");
efa27145 5885 thermal_read_mode = TPACPI_THERMAL_NONE;
60eb0b35
HMH		 5886 }
5887 } else {
5888 thermal_read_mode =
5889 (ta2 != 0) ?
efa27145 5890 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
60eb0b35
HMH		 5891 }
5892 } else if (acpi_tmp7) {
e28393c0
HMH		 5893 if (tpacpi_is_ibm() &&
5894 acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
a26f878a 5895 /* 600e/x, 770e, 770x */
efa27145 5896 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
a26f878a 5897 } else {
e28393c0 5898 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */
efa27145 5899 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
a26f878a
HMH		 5900 }
5901 } else {
5902 /* temperatures not supported on 570, G4x, R30, R31, R32 */
efa27145 5903 thermal_read_mode = TPACPI_THERMAL_NONE;
a26f878a 5904 }
78f81cc4 5905
fe08bc4b
HMH		 5906 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5907 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5908 thermal_read_mode);
5909
35ff8b9f 5910 switch (thermal_read_mode) {
2c37aa4e 5911 case TPACPI_THERMAL_TPEC_16:
7fd40029 5912 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5913 &thermal_temp_input16_group);
5914 if (res)
5915 return res;
5916 break;
5917 case TPACPI_THERMAL_TPEC_8:
5918 case TPACPI_THERMAL_ACPI_TMP07:
5919 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5920 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5921 &thermal_temp_input8_group);
5922 if (res)
5923 return res;
5924 break;
5925 case TPACPI_THERMAL_NONE:
5926 default:
5927 return 1;
5928 }
5929
5930 return 0;
5931}
5932
5933static void thermal_exit(void)
5934{
35ff8b9f 5935 switch (thermal_read_mode) {
2c37aa4e 5936 case TPACPI_THERMAL_TPEC_16:
7fd40029 5937 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
2c37aa4e
HMH		 5938 &thermal_temp_input16_group);
5939 break;
5940 case TPACPI_THERMAL_TPEC_8:
5941 case TPACPI_THERMAL_ACPI_TMP07:
5942 case TPACPI_THERMAL_ACPI_UPDT:
7fd40029 5943 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
f04d5e01 5944 &thermal_temp_input8_group);
2c37aa4e
HMH		 5945 break;
5946 case TPACPI_THERMAL_NONE:
5947 default:
5948 break;
5949 }
78f81cc4
BD		 5950}
5951
887965e6 5952static int thermal_read(struct seq_file *m)
a26f878a 5953{
a26f878a
HMH		 5954 int n, i;
5955 struct ibm_thermal_sensors_struct t;
5956
5957 n = thermal_get_sensors(&t);
5958 if (unlikely(n < 0))
5959 return n;
5960
887965e6 5961 seq_printf(m, "temperatures:\t");
a26f878a
HMH		 5962
5963 if (n > 0) {
5964 for (i = 0; i < (n - 1); i++)
887965e6
AD		 5965 seq_printf(m, "%d ", t.temp[i] / 1000);
5966 seq_printf(m, "%d\n", t.temp[i] / 1000);
a26f878a 5967 } else
887965e6 5968 seq_printf(m, "not supported\n");
78f81cc4 5969
887965e6 5970 return 0;
78f81cc4
BD		 5971}
5972
a5763f22
HMH		 5973static struct ibm_struct thermal_driver_data = {
5974 .name = "thermal",
5975 .read = thermal_read,
2c37aa4e 5976 .exit = thermal_exit,
a5763f22
HMH		 5977};
5978
56b6aeb0
HMH		 5979/*************************************************************************
5980 * Backlight/brightness subdriver
5981 */
5982
f74a27d4
HMH		 5983#define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5984
0e501834
HMH		 5985/*
5986 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5987 * CMOS NVRAM byte 0x5E, bits 0-3.
5988 *
5989 * EC HBRV (0x31) has the following layout
5990 * Bit 7: unknown function
5991 * Bit 6: unknown function
5992 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5993 * Bit 4: must be set to zero to avoid problems
5994 * Bit 3-0: backlight brightness level
5995 *
5996 * brightness_get_raw returns status data in the HBRV layout
d7880f10
HMH		 5997 *
5998 * WARNING: The X61 has been verified to use HBRV for something else, so
5999 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
6000 * testing on the very early *60 Lenovo models...
0e501834
HMH		 6001 */
6002
e11aecf1
HMH		 6003enum {
6004 TP_EC_BACKLIGHT = 0x31,
6005
6006 /* TP_EC_BACKLIGHT bitmasks */
6007 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
6008 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
6009 TP_EC_BACKLIGHT_MAPSW = 0x20,
6010};
6011
0e501834
HMH		 6012enum tpacpi_brightness_access_mode {
6013 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
6014 TPACPI_BRGHT_MODE_EC, /* EC control */
6015 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
6016 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6017 TPACPI_BRGHT_MODE_MAX
6018};
6019
94954cc6 6020static struct backlight_device *ibm_backlight_device;
0e501834
HMH		 6021
6022static enum tpacpi_brightness_access_mode brightness_mode =
6023 TPACPI_BRGHT_MODE_MAX;
6024
f74a27d4
HMH		 6025static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
6026
b21a15f6 6027static struct mutex brightness_mutex;
56b6aeb0 6028
0e501834
HMH		 6029/* NVRAM brightness access,
6030 * call with brightness_mutex held! */
6031static unsigned int tpacpi_brightness_nvram_get(void)
b21a15f6 6032{
0e501834 6033 u8 lnvram;
b21a15f6 6034
0e501834
HMH		 6035 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
6036 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6037 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
77775838 6038 lnvram &= bright_maxlvl;
0e501834
HMH		 6039
6040 return lnvram;
6041}
6042
6043static void tpacpi_brightness_checkpoint_nvram(void)
6044{
6045 u8 lec = 0;
6046 u8 b_nvram;
6047
6048 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
6049 return;
6050
6051 vdbg_printk(TPACPI_DBG_BRGHT,
6052 "trying to checkpoint backlight level to NVRAM...\n");
6053
6054 if (mutex_lock_killable(&brightness_mutex) < 0)
6055 return;
6056
6057 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6058 goto unlock;
6059 lec &= TP_EC_BACKLIGHT_LVLMSK;
6060 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
6061
6062 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
6063 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
6064 /* NVRAM needs update */
6065 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
6066 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
6067 b_nvram |= lec;
6068 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
6069 dbg_printk(TPACPI_DBG_BRGHT,
6070 "updated NVRAM backlight level to %u (0x%02x)\n",
6071 (unsigned int) lec, (unsigned int) b_nvram);
6072 } else
6073 vdbg_printk(TPACPI_DBG_BRGHT,
6074 "NVRAM backlight level already is %u (0x%02x)\n",
6075 (unsigned int) lec, (unsigned int) b_nvram);
6076
6077unlock:
6078 mutex_unlock(&brightness_mutex);
6079}
6080
6081
6082/* call with brightness_mutex held! */
6083static int tpacpi_brightness_get_raw(int *status)
6084{
6085 u8 lec = 0;
6086
6087 switch (brightness_mode) {
6088 case TPACPI_BRGHT_MODE_UCMS_STEP:
6089 *status = tpacpi_brightness_nvram_get();
6090 return 0;
6091 case TPACPI_BRGHT_MODE_EC:
6092 case TPACPI_BRGHT_MODE_ECNVRAM:
6093 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
2d5e94d7 6094 return -EIO;
0e501834
HMH		 6095 *status = lec;
6096 return 0;
6097 default:
6098 return -ENXIO;
b21a15f6 6099 }
0e501834
HMH		 6100}
6101
6102/* call with brightness_mutex held! */
6103/* do NOT call with illegal backlight level value */
6104static int tpacpi_brightness_set_ec(unsigned int value)
6105{
6106 u8 lec = 0;
6107
6108 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6109 return -EIO;
6110
6111 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
6112 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6113 (value & TP_EC_BACKLIGHT_LVLMSK))))
6114 return -EIO;
6115
6116 return 0;
6117}
6118
6119/* call with brightness_mutex held! */
6120static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6121{
6122 int cmos_cmd, inc;
6123 unsigned int current_value, i;
6124
6125 current_value = tpacpi_brightness_nvram_get();
6126
6127 if (value == current_value)
6128 return 0;
6129
6130 cmos_cmd = (value > current_value) ?
6131 TP_CMOS_BRIGHTNESS_UP :
6132 TP_CMOS_BRIGHTNESS_DOWN;
6133 inc = (value > current_value) ? 1 : -1;
6134
6135 for (i = current_value; i != value; i += inc)
6136 if (issue_thinkpad_cmos_command(cmos_cmd))
6137 return -EIO;
b21a15f6 6138
e11aecf1 6139 return 0;
b21a15f6
HMH		 6140}
6141
6142/* May return EINTR which can always be mapped to ERESTARTSYS */
0e501834 6143static int brightness_set(unsigned int value)
b21a15f6 6144{
0e501834 6145 int res;
b21a15f6 6146
bd3c7b9e 6147 if (value > bright_maxlvl)
b21a15f6
HMH		 6148 return -EINVAL;
6149
0e501834
HMH		 6150 vdbg_printk(TPACPI_DBG_BRGHT,
6151 "set backlight level to %d\n", value);
6152
7646ea88 6153 res = mutex_lock_killable(&brightness_mutex);
b21a15f6
HMH		 6154 if (res < 0)
6155 return res;
6156
0e501834
HMH		 6157 switch (brightness_mode) {
6158 case TPACPI_BRGHT_MODE_EC:
6159 case TPACPI_BRGHT_MODE_ECNVRAM:
6160 res = tpacpi_brightness_set_ec(value);
6161 break;
6162 case TPACPI_BRGHT_MODE_UCMS_STEP:
6163 res = tpacpi_brightness_set_ucmsstep(value);
6164 break;
6165 default:
6166 res = -ENXIO;
b21a15f6
HMH		 6167 }
6168
b21a15f6
HMH		 6169 mutex_unlock(&brightness_mutex);
6170 return res;
6171}
6172
6173/* sysfs backlight class ----------------------------------------------- */
6174
6175static int brightness_update_status(struct backlight_device *bd)
6176{
0e501834 6177 unsigned int level =
b21a15f6
HMH		 6178 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6179 bd->props.power == FB_BLANK_UNBLANK) ?
0e501834
HMH		 6180 bd->props.brightness : 0;
6181
6182 dbg_printk(TPACPI_DBG_BRGHT,
6183 "backlight: attempt to set level to %d\n",
6184 level);
6185
6186 /* it is the backlight class's job (caller) to handle
6187 * EINTR and other errors properly */
6188 return brightness_set(level);
b21a15f6
HMH		 6189}
6190
e11aecf1 6191static int brightness_get(struct backlight_device *bd)
a3f104c0 6192{
e11aecf1 6193 int status, res;
a3f104c0 6194
0e501834 6195 res = mutex_lock_killable(&brightness_mutex);
e11aecf1 6196 if (res < 0)
0e501834
HMH		 6197 return 0;
6198
6199 res = tpacpi_brightness_get_raw(&status);
6200
6201 mutex_unlock(&brightness_mutex);
6202
6203 if (res < 0)
6204 return 0;
e11e211a 6205
e11aecf1 6206 return status & TP_EC_BACKLIGHT_LVLMSK;
e11e211a
HMH		 6207}
6208
347a2686
HMH		 6209static void tpacpi_brightness_notify_change(void)
6210{
6211 backlight_force_update(ibm_backlight_device,
6212 BACKLIGHT_UPDATE_HOTKEY);
6213}
6214
acc2472e 6215static const struct backlight_ops ibm_backlight_data = {
35ff8b9f
HMH		 6216 .get_brightness = brightness_get,
6217 .update_status = brightness_update_status,
56b6aeb0 6218};
e11e211a 6219
b21a15f6 6220/* --------------------------------------------------------------------- */
e11e211a 6221
122f2672
HMH		 6222/*
6223 * Call _BCL method of video device. On some ThinkPads this will
6224 * switch the firmware to the ACPI brightness control mode.
6225 */
6226
77775838
HMH		 6227static int __init tpacpi_query_bcl_levels(acpi_handle handle)
6228{
6229 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
6230 union acpi_object *obj;
46445b6b 6231 struct acpi_device *device, *child;
77775838
HMH		 6232 int rc;
6233
46445b6b
AL		 6234 if (acpi_bus_get_device(handle, &device))
6235 return 0;
6236
6237 rc = 0;
6238 list_for_each_entry(child, &device->children, node) {
6239 acpi_status status = acpi_evaluate_object(child->handle, "_BCL",
6240 NULL, &buffer);
6241 if (ACPI_FAILURE(status))
6242 continue;
6243
77775838
HMH		 6244 obj = (union acpi_object *)buffer.pointer;
6245 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
0978e012 6246 pr_err("Unknown _BCL data, please report this to %s\n",
46445b6b 6247 TPACPI_MAIL);
77775838
HMH		 6248 rc = 0;
6249 } else {
6250 rc = obj->package.count;
6251 }
46445b6b 6252 break;
77775838
HMH		 6253 }
6254
6255 kfree(buffer.pointer);
6256 return rc;
6257}
6258
77775838
HMH		 6259
6260/*
6261 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
6262 */
6263static unsigned int __init tpacpi_check_std_acpi_brightness_support(void)
6264{
122f2672 6265 acpi_handle video_device;
77775838 6266 int bcl_levels = 0;
77775838 6267
46445b6b 6268 tpacpi_acpi_handle_locate("video", NULL, &video_device);
122f2672
HMH		 6269 if (video_device)
6270 bcl_levels = tpacpi_query_bcl_levels(video_device);
77775838 6271
122f2672 6272 tp_features.bright_acpimode = (bcl_levels > 0);
77775838 6273
122f2672 6274 return (bcl_levels > 2) ? (bcl_levels - 2) : 0;
77775838
HMH		 6275}
6276
59fe4fe3
HMH		 6277/*
6278 * These are only useful for models that have only one possibility
6279 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6280 * these quirks.
6281 */
6282#define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6283#define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6284#define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6285
6286static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6287 /* Models with ATI GPUs known to require ECNVRAM mode */
6288 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6289
6da25bf5 6290 /* Models with ATI GPUs that can use ECNVRAM */
7d1894d8 6291 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */
59fe4fe3 6292 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
7d1894d8 6293 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */
59fe4fe3
HMH		 6294 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6295
6da25bf5 6296 /* Models with Intel Extreme Graphics 2 */
7d1894d8 6297 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */
a9f8eacc
HMH		 6298 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6299 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
59fe4fe3
HMH		 6300
6301 /* Models with Intel GMA900 */
6302 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6303 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6304 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6305};
6306
77775838
HMH		 6307/*
6308 * Returns < 0 for error, otherwise sets tp_features.bright_*
6309 * and bright_maxlvl.
6310 */
6311static void __init tpacpi_detect_brightness_capabilities(void)
6312{
6313 unsigned int b;
6314
6315 vdbg_printk(TPACPI_DBG_INIT,
6316 "detecting firmware brightness interface capabilities\n");
6317
6318 /* we could run a quirks check here (same table used by
6319 * brightness_init) if needed */
6320
6321 /*
6322 * We always attempt to detect acpi support, so as to switch
6323 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6324 * going to publish a backlight interface
6325 */
6326 b = tpacpi_check_std_acpi_brightness_support();
6327 switch (b) {
6328 case 16:
6329 bright_maxlvl = 15;
0978e012 6330 pr_info("detected a 16-level brightness capable ThinkPad\n");
77775838
HMH		 6331 break;
6332 case 8:
6333 case 0:
6334 bright_maxlvl = 7;
0978e012 6335 pr_info("detected a 8-level brightness capable ThinkPad\n");
77775838
HMH		 6336 break;
6337 default:
0978e012 6338 pr_err("Unsupported brightness interface, "
77775838
HMH		 6339 "please contact %s\n", TPACPI_MAIL);
6340 tp_features.bright_unkfw = 1;
6341 bright_maxlvl = b - 1;
6342 }
6343}
6344
a5763f22 6345static int __init brightness_init(struct ibm_init_struct *iibm)
56b6aeb0 6346{
a19a6ee6 6347 struct backlight_properties props;
56b6aeb0 6348 int b;
59fe4fe3 6349 unsigned long quirks;
56b6aeb0 6350
fe08bc4b
HMH		 6351 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6352
f432255e
HMH		 6353 mutex_init(&brightness_mutex);
6354
59fe4fe3
HMH		 6355 quirks = tpacpi_check_quirks(brightness_quirk_table,
6356 ARRAY_SIZE(brightness_quirk_table));
6357
77775838
HMH		 6358 /* tpacpi_detect_brightness_capabilities() must have run already */
6359
6360 /* if it is unknown, we don't handle it: it wouldn't be safe */
6361 if (tp_features.bright_unkfw)
6362 return 1;
2dba1b5d 6363
b5972796 6364 if (!brightness_enable) {
0e501834 6365 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
b5972796
HMH		 6366 "brightness support disabled by "
6367 "module parameter\n");
6368 return 1;
6369 }
6370
217f0963
HMH		 6371 if (acpi_video_backlight_support()) {
6372 if (brightness_enable > 1) {
0978e012
JP		 6373 pr_info("Standard ACPI backlight interface "
6374 "available, not loading native one\n");
217f0963
HMH		 6375 return 1;
6376 } else if (brightness_enable == 1) {
0978e012 6377 pr_warn("Cannot enable backlight brightness support, "
217f0963 6378 "ACPI is already handling it. Refer to the "
0978e012 6379 "acpi_backlight kernel parameter.\n");
217f0963
HMH		 6380 return 1;
6381 }
6382 } else if (tp_features.bright_acpimode && brightness_enable > 1) {
0978e012
JP		 6383 pr_notice("Standard ACPI backlight interface not "
6384 "available, thinkpad_acpi native "
6385 "brightness control enabled\n");
217f0963
HMH		 6386 }
6387
0e501834
HMH		 6388 /*
6389 * Check for module parameter bogosity, note that we
6390 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6391 * able to detect "unspecified"
6392 */
6393 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6394 return -EINVAL;
24d3b774 6395
0e501834
HMH		 6396 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6397 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6398 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
59fe4fe3
HMH		 6399 if (quirks & TPACPI_BRGHT_Q_EC)
6400 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6401 else
0e501834 6402 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
24d3b774 6403
0e501834 6404 dbg_printk(TPACPI_DBG_BRGHT,
59fe4fe3 6405 "driver auto-selected brightness_mode=%d\n",
0e501834
HMH		 6406 brightness_mode);
6407 }
24d3b774 6408
d7880f10 6409 /* Safety */
e28393c0 6410 if (!tpacpi_is_ibm() &&
d7880f10
HMH		 6411 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6412 brightness_mode == TPACPI_BRGHT_MODE_EC))
6413 return -EINVAL;
6414
0e501834 6415 if (tpacpi_brightness_get_raw(&b) < 0)
24d3b774 6416 return 1;
56b6aeb0 6417
a19a6ee6 6418 memset(&props, 0, sizeof(struct backlight_properties));
bb7ca747 6419 props.type = BACKLIGHT_PLATFORM;
77775838
HMH		 6420 props.max_brightness = bright_maxlvl;
6421 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
a19a6ee6
MG		 6422 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
6423 NULL, NULL,
6424 &ibm_backlight_data,
6425 &props);
56b6aeb0 6426 if (IS_ERR(ibm_backlight_device)) {
435c47e2
HMH		 6427 int rc = PTR_ERR(ibm_backlight_device);
6428 ibm_backlight_device = NULL;
0978e012 6429 pr_err("Could not register backlight device\n");
435c47e2 6430 return rc;
56b6aeb0 6431 }
0e501834
HMH		 6432 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6433 "brightness is supported\n");
56b6aeb0 6434
59fe4fe3 6435 if (quirks & TPACPI_BRGHT_Q_ASK) {
0978e012
JP		 6436 pr_notice("brightness: will use unverified default: "
6437 "brightness_mode=%d\n", brightness_mode);
6438 pr_notice("brightness: please report to %s whether it works well "
6439 "or not on your ThinkPad\n", TPACPI_MAIL);
59fe4fe3
HMH		 6440 }
6441
7d9745cf
HMH		 6442 /* Added by mistake in early 2007. Probably useless, but it could
6443 * be working around some unknown firmware problem where the value
6444 * read at startup doesn't match the real hardware state... so leave
6445 * it in place just in case */
56b6aeb0
HMH		 6446 backlight_update_status(ibm_backlight_device);
6447
347a2686
HMH		 6448 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6449 "brightness: registering brightness hotkeys "
6450 "as change notification\n");
6451 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6452 | TP_ACPI_HKEY_BRGHTUP_MASK
3098064d 6453 | TP_ACPI_HKEY_BRGHTDWN_MASK);
56b6aeb0
HMH		 6454 return 0;
6455}
6456
fd3c3a42 6457static void brightness_suspend(void)
0e501834
HMH		 6458{
6459 tpacpi_brightness_checkpoint_nvram();
6460}
6461
6462static void brightness_shutdown(void)
6463{
6464 tpacpi_brightness_checkpoint_nvram();
6465}
6466
56b6aeb0
HMH		 6467static void brightness_exit(void)
6468{
6469 if (ibm_backlight_device) {
0e501834 6470 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
fe08bc4b 6471 "calling backlight_device_unregister()\n");
56b6aeb0 6472 backlight_device_unregister(ibm_backlight_device);
56b6aeb0 6473 }
0e501834
HMH		 6474
6475 tpacpi_brightness_checkpoint_nvram();
56b6aeb0
HMH		 6476}
6477
887965e6 6478static int brightness_read(struct seq_file *m)
56b6aeb0 6479{
56b6aeb0
HMH		 6480 int level;
6481
35ff8b9f
HMH		 6482 level = brightness_get(NULL);
6483 if (level < 0) {
887965e6 6484 seq_printf(m, "level:\t\tunreadable\n");
56b6aeb0 6485 } else {
887965e6
AD		 6486 seq_printf(m, "level:\t\t%d\n", level);
6487 seq_printf(m, "commands:\tup, down\n");
77775838
HMH		 6488 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n",
6489 bright_maxlvl);
56b6aeb0
HMH		 6490 }
6491
887965e6 6492 return 0;
56b6aeb0
HMH		 6493}
6494
8acb0250
HM		 6495static int brightness_write(char *buf)
6496{
6497 int level;
4273af8d 6498 int rc;
1da177e4 6499 char *cmd;
1da177e4 6500
4273af8d
HMH		 6501 level = brightness_get(NULL);
6502 if (level < 0)
6503 return level;
78f81cc4 6504
4273af8d 6505 while ((cmd = next_cmd(&buf))) {
78f81cc4 6506 if (strlencmp(cmd, "up") == 0) {
77775838 6507 if (level < bright_maxlvl)
4273af8d 6508 level++;
78f81cc4 6509 } else if (strlencmp(cmd, "down") == 0) {
4273af8d
HMH		 6510 if (level > 0)
6511 level--;
6512 } else if (sscanf(cmd, "level %d", &level) == 1 &&
77775838 6513 level >= 0 && level <= bright_maxlvl) {
4273af8d 6514 /* new level set */
78f81cc4
BD		 6515 } else
6516 return -EINVAL;
78f81cc4
BD		 6517 }
6518
0e501834
HMH		 6519 tpacpi_disclose_usertask("procfs brightness",
6520 "set level to %d\n", level);
6521
4273af8d
HMH		 6522 /*
6523 * Now we know what the final level should be, so we try to set it.
6524 * Doing it this way makes the syscall restartable in case of EINTR
6525 */
6526 rc = brightness_set(level);
347a2686
HMH		 6527 if (!rc && ibm_backlight_device)
6528 backlight_force_update(ibm_backlight_device,
6529 BACKLIGHT_UPDATE_SYSFS);
72a979f0 6530 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 6531}
6532
a5763f22
HMH		 6533static struct ibm_struct brightness_driver_data = {
6534 .name = "brightness",
6535 .read = brightness_read,
6536 .write = brightness_write,
6537 .exit = brightness_exit,
0e501834
HMH		 6538 .suspend = brightness_suspend,
6539 .shutdown = brightness_shutdown,
a5763f22
HMH		 6540};
6541
56b6aeb0
HMH		 6542/*************************************************************************
6543 * Volume subdriver
6544 */
fb87a811 6545
329e4e18
HMH		 6546/*
6547 * IBM ThinkPads have a simple volume controller with MUTE gating.
6548 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6549 *
6550 * Since the *61 series (and probably also the later *60 series), Lenovo
6551 * ThinkPads only implement the MUTE gate.
6552 *
6553 * EC register 0x30
6554 * Bit 6: MUTE (1 mutes sound)
6555 * Bit 3-0: Volume
6556 * Other bits should be zero as far as we know.
6557 *
6558 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6559 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6560 * such as bit 7 which is used to detect repeated presses of MUTE,
6561 * and we leave them unchanged.
9a417ec0
AL		 6562 *
6563 * On newer Lenovo ThinkPads, the EC can automatically change the volume
6564 * in response to user input. Unfortunately, this rarely works well.
6565 * The laptop changes the state of its internal MUTE gate and, on some
6566 * models, sends KEY_MUTE, causing any user code that responds to the
6567 * mute button to get confused. The hardware MUTE gate is also
6568 * unnecessary, since user code can handle the mute button without
6569 * kernel or EC help.
6570 *
6571 * To avoid confusing userspace, we simply disable all EC-based mute
6572 * and volume controls when possible.
329e4e18
HMH		 6573 */
6574
ff850c33
HMH		 6575#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
6576
0d204c34
HMH		 6577#define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6578#define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6579#define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6580
cab66613
TI		 6581#if SNDRV_CARDS <= 32
6582#define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1)
6583#else
6584#define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1)
6585#endif
6586static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
0d204c34 6587static char *alsa_id = "ThinkPadEC";
90ab5ee9 6588static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
0d204c34
HMH		 6589
6590struct tpacpi_alsa_data {
6591 struct snd_card *card;
6592 struct snd_ctl_elem_id *ctl_mute_id;
6593 struct snd_ctl_elem_id *ctl_vol_id;
6594};
6595
6596static struct snd_card *alsa_card;
6597
329e4e18
HMH		 6598enum {
6599 TP_EC_AUDIO = 0x30,
6600
6601 /* TP_EC_AUDIO bits */
6602 TP_EC_AUDIO_MUTESW = 6,
6603
6604 /* TP_EC_AUDIO bitmasks */
6605 TP_EC_AUDIO_LVL_MSK = 0x0F,
6606 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
6607
6608 /* Maximum volume */
6609 TP_EC_VOLUME_MAX = 14,
6610};
6611
6612enum tpacpi_volume_access_mode {
6613 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
6614 TPACPI_VOL_MODE_EC, /* Pure EC control */
6615 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
6616 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6617 TPACPI_VOL_MODE_MAX
6618};
6619
a112ceee
HMH		 6620enum tpacpi_volume_capabilities {
6621 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
6622 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
6623 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
6624 TPACPI_VOL_CAP_MAX
6625};
6626
9a417ec0
AL		 6627enum tpacpi_mute_btn_mode {
6628 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */
6629 /* We don't know what mode 1 is. */
6630 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */
6631 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */
6632};
6633
329e4e18
HMH		 6634static enum tpacpi_volume_access_mode volume_mode =
6635 TPACPI_VOL_MODE_MAX;
6636
a112ceee 6637static enum tpacpi_volume_capabilities volume_capabilities;
90ab5ee9 6638static bool volume_control_allowed;
9a417ec0
AL		 6639static bool software_mute_requested = true;
6640static bool software_mute_active;
6641static int software_mute_orig_mode;
f74a27d4 6642
329e4e18
HMH		 6643/*
6644 * Used to syncronize writers to TP_EC_AUDIO and
6645 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6646 */
6647static struct mutex volume_mutex;
6648
6649static void tpacpi_volume_checkpoint_nvram(void)
78f81cc4 6650{
329e4e18
HMH		 6651 u8 lec = 0;
6652 u8 b_nvram;
a112ceee 6653 u8 ec_mask;
329e4e18
HMH		 6654
6655 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
6656 return;
c7ac6291
HMH		 6657 if (!volume_control_allowed)
6658 return;
9a417ec0
AL		 6659 if (software_mute_active)
6660 return;
329e4e18
HMH		 6661
6662 vdbg_printk(TPACPI_DBG_MIXER,
6663 "trying to checkpoint mixer state to NVRAM...\n");
78f81cc4 6664
a112ceee
HMH		 6665 if (tp_features.mixer_no_level_control)
6666 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
6667 else
6668 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
6669
329e4e18
HMH		 6670 if (mutex_lock_killable(&volume_mutex) < 0)
6671 return;
6672
6673 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
6674 goto unlock;
6675 lec &= ec_mask;
6676 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
6677
6678 if (lec != (b_nvram & ec_mask)) {
6679 /* NVRAM needs update */
6680 b_nvram &= ~ec_mask;
6681 b_nvram |= lec;
6682 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
6683 dbg_printk(TPACPI_DBG_MIXER,
6684 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6685 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4 6686 } else {
329e4e18
HMH		 6687 vdbg_printk(TPACPI_DBG_MIXER,
6688 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6689 (unsigned int) lec, (unsigned int) b_nvram);
78f81cc4
BD		 6690 }
6691
329e4e18
HMH		 6692unlock:
6693 mutex_unlock(&volume_mutex);
78f81cc4
BD		 6694}
6695
329e4e18 6696static int volume_get_status_ec(u8 *status)
78f81cc4 6697{
329e4e18 6698 u8 s;
78f81cc4 6699
329e4e18
HMH		 6700 if (!acpi_ec_read(TP_EC_AUDIO, &s))
6701 return -EIO;
78f81cc4 6702
329e4e18 6703 *status = s;
1da177e4 6704
329e4e18 6705 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
35ff8b9f 6706
329e4e18
HMH		 6707 return 0;
6708}
78f81cc4 6709
329e4e18
HMH		 6710static int volume_get_status(u8 *status)
6711{
6712 return volume_get_status_ec(status);
6713}
78f81cc4 6714
329e4e18
HMH		 6715static int volume_set_status_ec(const u8 status)
6716{
6717 if (!acpi_ec_write(TP_EC_AUDIO, status))
6718 return -EIO;
78f81cc4 6719
329e4e18
HMH		 6720 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
6721
9a417ec0
AL		 6722 /*
6723 * On X200s, and possibly on others, it can take a while for
6724 * reads to become correct.
6725 */
6726 msleep(1);
6727
329e4e18
HMH		 6728 return 0;
6729}
6730
6731static int volume_set_status(const u8 status)
6732{
6733 return volume_set_status_ec(status);
6734}
6735
88cc8377
HMH		 6736/* returns < 0 on error, 0 on no change, 1 on change */
6737static int __volume_set_mute_ec(const bool mute)
329e4e18
HMH		 6738{
6739 int rc;
6740 u8 s, n;
6741
6742 if (mutex_lock_killable(&volume_mutex) < 0)
6743 return -EINTR;
6744
6745 rc = volume_get_status_ec(&s);
6746 if (rc)
6747 goto unlock;
6748
6749 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
6750 s & ~TP_EC_AUDIO_MUTESW_MSK;
6751
88cc8377 6752 if (n != s) {
329e4e18 6753 rc = volume_set_status_ec(n);
88cc8377
HMH		 6754 if (!rc)
6755 rc = 1;
6756 }
329e4e18
HMH		 6757
6758unlock:
6759 mutex_unlock(&volume_mutex);
6760 return rc;
6761}
6762
88cc8377
HMH		 6763static int volume_alsa_set_mute(const bool mute)
6764{
6765 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n",
6766 (mute) ? "" : "un");
6767 return __volume_set_mute_ec(mute);
6768}
6769
329e4e18
HMH		 6770static int volume_set_mute(const bool mute)
6771{
88cc8377
HMH		 6772 int rc;
6773
329e4e18
HMH		 6774 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
6775 (mute) ? "" : "un");
88cc8377
HMH		 6776
6777 rc = __volume_set_mute_ec(mute);
6778 return (rc < 0) ? rc : 0;
329e4e18
HMH		 6779}
6780
88cc8377
HMH		 6781/* returns < 0 on error, 0 on no change, 1 on change */
6782static int __volume_set_volume_ec(const u8 vol)
329e4e18
HMH		 6783{
6784 int rc;
6785 u8 s, n;
6786
6787 if (vol > TP_EC_VOLUME_MAX)
6788 return -EINVAL;
6789
6790 if (mutex_lock_killable(&volume_mutex) < 0)
6791 return -EINTR;
6792
6793 rc = volume_get_status_ec(&s);
6794 if (rc)
6795 goto unlock;
6796
6797 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
6798
88cc8377 6799 if (n != s) {
329e4e18 6800 rc = volume_set_status_ec(n);
88cc8377
HMH		 6801 if (!rc)
6802 rc = 1;
6803 }
329e4e18
HMH		 6804
6805unlock:
6806 mutex_unlock(&volume_mutex);
6807 return rc;
6808}
6809
9a417ec0
AL		 6810static int volume_set_software_mute(bool startup)
6811{
6812 int result;
6813
6814 if (!tpacpi_is_lenovo())
6815 return -ENODEV;
6816
6817 if (startup) {
6818 if (!acpi_evalf(ec_handle, &software_mute_orig_mode,
6819 "HAUM", "qd"))
6820 return -EIO;
6821
6822 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6823 "Initial HAUM setting was %d\n",
6824 software_mute_orig_mode);
6825 }
6826
6827 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd",
6828 (int)TP_EC_MUTE_BTN_NONE))
6829 return -EIO;
6830
6831 if (result != TP_EC_MUTE_BTN_NONE)
6832 pr_warn("Unexpected SAUM result %d\n",
6833 result);
6834
6835 /*
6836 * In software mute mode, the standard codec controls take
6837 * precendence, so we unmute the ThinkPad HW switch at
6838 * startup. Just on case there are SAUM-capable ThinkPads
6839 * with level controls, set max HW volume as well.
6840 */
6841 if (tp_features.mixer_no_level_control)
6842 result = volume_set_mute(false);
6843 else
6844 result = volume_set_status(TP_EC_VOLUME_MAX);
6845
6846 if (result != 0)
6847 pr_warn("Failed to unmute the HW mute switch\n");
6848
6849 return 0;
6850}
6851
6852static void volume_exit_software_mute(void)
6853{
6854 int r;
6855
6856 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode)
6857 || r != software_mute_orig_mode)
6858 pr_warn("Failed to restore mute mode\n");
6859}
6860
88cc8377 6861static int volume_alsa_set_volume(const u8 vol)
329e4e18
HMH		 6862{
6863 dbg_printk(TPACPI_DBG_MIXER,
88cc8377
HMH		 6864 "ALSA: trying to set volume level to %hu\n", vol);
6865 return __volume_set_volume_ec(vol);
329e4e18
HMH		 6866}
6867
0d204c34
HMH		 6868static void volume_alsa_notify_change(void)
6869{
6870 struct tpacpi_alsa_data *d;
6871
6872 if (alsa_card && alsa_card->private_data) {
6873 d = alsa_card->private_data;
6874 if (d->ctl_mute_id)
6875 snd_ctl_notify(alsa_card,
6876 SNDRV_CTL_EVENT_MASK_VALUE,
6877 d->ctl_mute_id);
6878 if (d->ctl_vol_id)
6879 snd_ctl_notify(alsa_card,
6880 SNDRV_CTL_EVENT_MASK_VALUE,
6881 d->ctl_vol_id);
6882 }
6883}
6884
6885static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
6886 struct snd_ctl_elem_info *uinfo)
6887{
6888 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
6889 uinfo->count = 1;
6890 uinfo->value.integer.min = 0;
6891 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
6892 return 0;
6893}
6894
6895static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
6896 struct snd_ctl_elem_value *ucontrol)
6897{
6898 u8 s;
6899 int rc;
6900
6901 rc = volume_get_status(&s);
6902 if (rc < 0)
6903 return rc;
6904
6905 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
6906 return 0;
6907}
6908
6909static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
6910 struct snd_ctl_elem_value *ucontrol)
6911{
38e11cde
HMH		 6912 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n",
6913 ucontrol->value.integer.value[0]);
88cc8377 6914 return volume_alsa_set_volume(ucontrol->value.integer.value[0]);
0d204c34
HMH		 6915}
6916
6917#define volume_alsa_mute_info snd_ctl_boolean_mono_info
6918
6919static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
6920 struct snd_ctl_elem_value *ucontrol)
6921{
6922 u8 s;
6923 int rc;
6924
6925 rc = volume_get_status(&s);
6926 if (rc < 0)
6927 return rc;
6928
6929 ucontrol->value.integer.value[0] =
6930 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
6931 return 0;
6932}
6933
6934static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
6935 struct snd_ctl_elem_value *ucontrol)
6936{
38e11cde
HMH		 6937 tpacpi_disclose_usertask("ALSA", "%smute\n",
6938 ucontrol->value.integer.value[0] ?
6939 "un" : "");
88cc8377 6940 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]);
0d204c34
HMH		 6941}
6942
c3aa4723 6943static struct snd_kcontrol_new volume_alsa_control_vol __initdata = {
0d204c34
HMH		 6944 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6945 .name = "Console Playback Volume",
6946 .index = 0,
6947 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6948 .info = volume_alsa_vol_info,
6949 .get = volume_alsa_vol_get,
6950};
6951
c3aa4723 6952static struct snd_kcontrol_new volume_alsa_control_mute __initdata = {
0d204c34
HMH		 6953 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6954 .name = "Console Playback Switch",
6955 .index = 0,
6956 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6957 .info = volume_alsa_mute_info,
6958 .get = volume_alsa_mute_get,
6959};
6960
fd3c3a42 6961static void volume_suspend(void)
329e4e18
HMH		 6962{
6963 tpacpi_volume_checkpoint_nvram();
6964}
6965
0d204c34
HMH		 6966static void volume_resume(void)
6967{
9a417ec0
AL		 6968 if (software_mute_active) {
6969 if (volume_set_software_mute(false) < 0)
6970 pr_warn("Failed to restore software mute\n");
6971 } else {
6972 volume_alsa_notify_change();
6973 }
0d204c34
HMH		 6974}
6975
329e4e18
HMH		 6976static void volume_shutdown(void)
6977{
6978 tpacpi_volume_checkpoint_nvram();
6979}
6980
6981static void volume_exit(void)
6982{
0d204c34
HMH		 6983 if (alsa_card) {
6984 snd_card_free(alsa_card);
6985 alsa_card = NULL;
6986 }
6987
329e4e18 6988 tpacpi_volume_checkpoint_nvram();
9a417ec0
AL		 6989
6990 if (software_mute_active)
6991 volume_exit_software_mute();
329e4e18
HMH		 6992}
6993
0d204c34
HMH		 6994static int __init volume_create_alsa_mixer(void)
6995{
6996 struct snd_card *card;
6997 struct tpacpi_alsa_data *data;
6998 struct snd_kcontrol *ctl_vol;
6999 struct snd_kcontrol *ctl_mute;
7000 int rc;
7001
89235e55
TI		 7002 rc = snd_card_new(&tpacpi_pdev->dev,
7003 alsa_index, alsa_id, THIS_MODULE,
7004 sizeof(struct tpacpi_alsa_data), &card);
74c75c18 7005 if (rc < 0 || !card) {
0978e012 7006 pr_err("Failed to create ALSA card structures: %d\n", rc);
74c75c18
HMH		 7007 return 1;
7008 }
0d204c34
HMH		 7009
7010 BUG_ON(!card->private_data);
7011 data = card->private_data;
7012 data->card = card;
7013
7014 strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
7015 sizeof(card->driver));
7016 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
7017 sizeof(card->shortname));
7018 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
7019 (thinkpad_id.ec_version_str) ?
7020 thinkpad_id.ec_version_str : "(unknown)");
7021 snprintf(card->longname, sizeof(card->longname),
7022 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
7023 (thinkpad_id.ec_version_str) ?
7024 thinkpad_id.ec_version_str : "unknown");
7025
7026 if (volume_control_allowed) {
7027 volume_alsa_control_vol.put = volume_alsa_vol_put;
7028 volume_alsa_control_vol.access =
7029 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7030
7031 volume_alsa_control_mute.put = volume_alsa_mute_put;
7032 volume_alsa_control_mute.access =
7033 SNDRV_CTL_ELEM_ACCESS_READWRITE;
7034 }
7035
7036 if (!tp_features.mixer_no_level_control) {
7037 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
7038 rc = snd_ctl_add(card, ctl_vol);
7039 if (rc < 0) {
0978e012
JP		 7040 pr_err("Failed to create ALSA volume control: %d\n",
7041 rc);
74c75c18 7042 goto err_exit;
78f81cc4 7043 }
0d204c34
HMH		 7044 data->ctl_vol_id = &ctl_vol->id;
7045 }
78f81cc4 7046
0d204c34
HMH		 7047 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
7048 rc = snd_ctl_add(card, ctl_mute);
7049 if (rc < 0) {
0978e012 7050 pr_err("Failed to create ALSA mute control: %d\n", rc);
74c75c18 7051 goto err_exit;
0d204c34
HMH		 7052 }
7053 data->ctl_mute_id = &ctl_mute->id;
35ff8b9f 7054
0d204c34 7055 rc = snd_card_register(card);
0d204c34 7056 if (rc < 0) {
0978e012 7057 pr_err("Failed to register ALSA card: %d\n", rc);
74c75c18 7058 goto err_exit;
0d204c34
HMH		 7059 }
7060
7061 alsa_card = card;
74c75c18
HMH		 7062 return 0;
7063
7064err_exit:
7065 snd_card_free(card);
7066 return 1;
0d204c34
HMH		 7067}
7068
a112ceee
HMH		 7069#define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
7070#define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
7071
7072static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
7073 /* Whitelist volume level on all IBM by default */
7074 { .vendor = PCI_VENDOR_ID_IBM,
7075 .bios = TPACPI_MATCH_ANY,
7076 .ec = TPACPI_MATCH_ANY,
7077 .quirks = TPACPI_VOL_Q_LEVEL },
7078
7079 /* Lenovo models with volume control (needs confirmation) */
7080 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
7081 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
7082 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
7083 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
7084 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
7085 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
7086 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
7087
7088 /* Whitelist mute-only on all Lenovo by default */
7089 { .vendor = PCI_VENDOR_ID_LENOVO,
7090 .bios = TPACPI_MATCH_ANY,
7091 .ec = TPACPI_MATCH_ANY,
7092 .quirks = TPACPI_VOL_Q_MUTEONLY }
7093};
7094
329e4e18
HMH		 7095static int __init volume_init(struct ibm_init_struct *iibm)
7096{
a112ceee 7097 unsigned long quirks;
0d204c34 7098 int rc;
a112ceee 7099
329e4e18
HMH		 7100 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
7101
7102 mutex_init(&volume_mutex);
7103
7104 /*
7105 * Check for module parameter bogosity, note that we
7106 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
7107 * able to detect "unspecified"
7108 */
7109 if (volume_mode > TPACPI_VOL_MODE_MAX)
7110 return -EINVAL;
7111
7112 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
0978e012
JP		 7113 pr_err("UCMS step volume mode not implemented, "
7114 "please contact %s\n", TPACPI_MAIL);
329e4e18
HMH		 7115 return 1;
7116 }
7117
a112ceee
HMH		 7118 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
7119 return -EINVAL;
7120
0d204c34
HMH		 7121 /*
7122 * The ALSA mixer is our primary interface.
7123 * When disabled, don't install the subdriver at all
7124 */
7125 if (!alsa_enable) {
7126 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7127 "ALSA mixer disabled by parameter, "
7128 "not loading volume subdriver...\n");
7129 return 1;
7130 }
7131
a112ceee
HMH		 7132 quirks = tpacpi_check_quirks(volume_quirk_table,
7133 ARRAY_SIZE(volume_quirk_table));
7134
7135 switch (volume_capabilities) {
7136 case TPACPI_VOL_CAP_AUTO:
7137 if (quirks & TPACPI_VOL_Q_MUTEONLY)
7138 tp_features.mixer_no_level_control = 1;
7139 else if (quirks & TPACPI_VOL_Q_LEVEL)
7140 tp_features.mixer_no_level_control = 0;
7141 else
7142 return 1; /* no mixer */
7143 break;
7144 case TPACPI_VOL_CAP_VOLMUTE:
7145 tp_features.mixer_no_level_control = 0;
7146 break;
7147 case TPACPI_VOL_CAP_MUTEONLY:
7148 tp_features.mixer_no_level_control = 1;
7149 break;
7150 default:
7151 return 1;
7152 }
7153
7154 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
7155 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7156 "using user-supplied volume_capabilities=%d\n",
7157 volume_capabilities);
7158
329e4e18
HMH		 7159 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
7160 volume_mode == TPACPI_VOL_MODE_MAX) {
7161 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
7162
7163 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7164 "driver auto-selected volume_mode=%d\n",
7165 volume_mode);
7166 } else {
7167 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7168 "using user-supplied volume_mode=%d\n",
7169 volume_mode);
7170 }
7171
7172 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
a112ceee
HMH		 7173 "mute is supported, volume control is %s\n",
7174 str_supported(!tp_features.mixer_no_level_control));
329e4e18 7175
9a417ec0
AL		 7176 if (software_mute_requested && volume_set_software_mute(true) == 0) {
7177 software_mute_active = true;
7178 } else {
7179 rc = volume_create_alsa_mixer();
7180 if (rc) {
7181 pr_err("Could not create the ALSA mixer interface\n");
7182 return rc;
7183 }
0d204c34 7184
9a417ec0
AL		 7185 pr_info("Console audio control enabled, mode: %s\n",
7186 (volume_control_allowed) ?
7187 "override (read/write)" :
7188 "monitor (read only)");
7189 }
c7ac6291 7190
0d204c34
HMH		 7191 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
7192 "registering volume hotkeys as change notification\n");
7193 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
7194 | TP_ACPI_HKEY_VOLUP_MASK
7195 | TP_ACPI_HKEY_VOLDWN_MASK
7196 | TP_ACPI_HKEY_MUTE_MASK);
7197
329e4e18
HMH		 7198 return 0;
7199}
f74a27d4 7200
887965e6 7201static int volume_read(struct seq_file *m)
78f81cc4 7202{
329e4e18 7203 u8 status;
78f81cc4 7204
329e4e18 7205 if (volume_get_status(&status) < 0) {
887965e6 7206 seq_printf(m, "level:\t\tunreadable\n");
78f81cc4 7207 } else {
a112ceee 7208 if (tp_features.mixer_no_level_control)
887965e6 7209 seq_printf(m, "level:\t\tunsupported\n");
a112ceee 7210 else
887965e6 7211 seq_printf(m, "level:\t\t%d\n",
a112ceee
HMH		 7212 status & TP_EC_AUDIO_LVL_MSK);
7213
887965e6 7214 seq_printf(m, "mute:\t\t%s\n",
329e4e18 7215 onoff(status, TP_EC_AUDIO_MUTESW));
a112ceee 7216
c7ac6291 7217 if (volume_control_allowed) {
887965e6 7218 seq_printf(m, "commands:\tunmute, mute\n");
c7ac6291 7219 if (!tp_features.mixer_no_level_control) {
887965e6 7220 seq_printf(m,
c7ac6291 7221 "commands:\tup, down\n");
887965e6 7222 seq_printf(m,
c7ac6291
HMH		 7223 "commands:\tlevel <level>"
7224 " (<level> is 0-%d)\n",
7225 TP_EC_VOLUME_MAX);
7226 }
78f81cc4
BD		 7227 }
7228 }
7229
7230 return 0;
7231}
7232
78f81cc4
BD		 7233static int volume_write(char *buf)
7234{
329e4e18
HMH		 7235 u8 s;
7236 u8 new_level, new_mute;
7237 int l;
78f81cc4 7238 char *cmd;
329e4e18 7239 int rc;
78f81cc4 7240
c7ac6291
HMH		 7241 /*
7242 * We do allow volume control at driver startup, so that the
7243 * user can set initial state through the volume=... parameter hack.
7244 */
7245 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
7246 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
7247 tp_warned.volume_ctrl_forbidden = 1;
0978e012
JP		 7248 pr_notice("Console audio control in monitor mode, "
7249 "changes are not allowed\n");
7250 pr_notice("Use the volume_control=1 module parameter "
7251 "to enable volume control\n");
c7ac6291
HMH		 7252 }
7253 return -EPERM;
7254 }
7255
329e4e18
HMH		 7256 rc = volume_get_status(&s);
7257 if (rc < 0)
7258 return rc;
78f81cc4 7259
329e4e18
HMH		 7260 new_level = s & TP_EC_AUDIO_LVL_MSK;
7261 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
7262
7263 while ((cmd = next_cmd(&buf))) {
a112ceee
HMH		 7264 if (!tp_features.mixer_no_level_control) {
7265 if (strlencmp(cmd, "up") == 0) {
7266 if (new_mute)
7267 new_mute = 0;
7268 else if (new_level < TP_EC_VOLUME_MAX)
7269 new_level++;
7270 continue;
7271 } else if (strlencmp(cmd, "down") == 0) {
7272 if (new_mute)
7273 new_mute = 0;
7274 else if (new_level > 0)
7275 new_level--;
7276 continue;
7277 } else if (sscanf(cmd, "level %u", &l) == 1 &&
7278 l >= 0 && l <= TP_EC_VOLUME_MAX) {
7279 new_level = l;
7280 continue;
7281 }
7282 }
7283 if (strlencmp(cmd, "mute") == 0)
329e4e18 7284 new_mute = TP_EC_AUDIO_MUTESW_MSK;
a112ceee
HMH		 7285 else if (strlencmp(cmd, "unmute") == 0)
7286 new_mute = 0;
7287 else
1da177e4 7288 return -EINVAL;
329e4e18 7289 }
1da177e4 7290
a112ceee
HMH		 7291 if (tp_features.mixer_no_level_control) {
7292 tpacpi_disclose_usertask("procfs volume", "%smute\n",
7293 new_mute ? "" : "un");
7294 rc = volume_set_mute(!!new_mute);
7295 } else {
7296 tpacpi_disclose_usertask("procfs volume",
7297 "%smute and set level to %d\n",
7298 new_mute ? "" : "un", new_level);
7299 rc = volume_set_status(new_mute | new_level);
7300 }
0d204c34 7301 volume_alsa_notify_change();
78f81cc4 7302
329e4e18 7303 return (rc == -EINTR) ? -ERESTARTSYS : rc;
78f81cc4
BD		 7304}
7305
a5763f22
HMH		 7306static struct ibm_struct volume_driver_data = {
7307 .name = "volume",
7308 .read = volume_read,
7309 .write = volume_write,
329e4e18
HMH		 7310 .exit = volume_exit,
7311 .suspend = volume_suspend,
0d204c34 7312 .resume = volume_resume,
329e4e18 7313 .shutdown = volume_shutdown,
a5763f22 7314};
56b6aeb0 7315
ff850c33
HMH		 7316#else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7317
7318#define alsa_card NULL
7319
7320static void inline volume_alsa_notify_change(void)
7321{
7322}
7323
7324static int __init volume_init(struct ibm_init_struct *iibm)
7325{
0978e012 7326 pr_info("volume: disabled as there is no ALSA support in this kernel\n");
ff850c33
HMH		 7327
7328 return 1;
7329}
7330
7331static struct ibm_struct volume_driver_data = {
7332 .name = "volume",
7333};
7334
7335#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
7336
56b6aeb0
HMH		 7337/*************************************************************************
7338 * Fan subdriver
7339 */
7340
7341/*
7342 * FAN ACCESS MODES
7343 *
efa27145 7344 * TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0
HMH		 7345 * ACPI GFAN method: returns fan level
7346 *
efa27145 7347 * see TPACPI_FAN_WR_ACPI_SFAN
f51d1a39 7348 * EC 0x2f (HFSP) not available if GFAN exists
56b6aeb0 7349 *
efa27145 7350 * TPACPI_FAN_WR_ACPI_SFAN:
56b6aeb0
HMH		 7351 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7352 *
f51d1a39
HMH		 7353 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7354 * it for writing.
56b6aeb0 7355 *
efa27145 7356 * TPACPI_FAN_WR_TPEC:
f51d1a39
HMH		 7357 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7358 * Supported on almost all ThinkPads
56b6aeb0
HMH		 7359 *
7360 * Fan speed changes of any sort (including those caused by the
7361 * disengaged mode) are usually done slowly by the firmware as the
9ddc5b6f 7362 * maximum amount of fan duty cycle change per second seems to be
56b6aeb0
HMH		 7363 * limited.
7364 *
7365 * Reading is not available if GFAN exists.
7366 * Writing is not available if SFAN exists.
7367 *
7368 * Bits
7369 * 7 automatic mode engaged;
7370 * (default operation mode of the ThinkPad)
7371 * fan level is ignored in this mode.
f51d1a39 7372 * 6 full speed mode (takes precedence over bit 7);
56b6aeb0 7373 * not available on all thinkpads. May disable
f51d1a39
HMH		 7374 * the tachometer while the fan controller ramps up
7375 * the speed (which can take up to a few *minutes*).
7376 * Speeds up fan to 100% duty-cycle, which is far above
7377 * the standard RPM levels. It is not impossible that
7378 * it could cause hardware damage.
56b6aeb0
HMH		 7379 * 5-3 unused in some models. Extra bits for fan level
7380 * in others, but still useless as all values above
7381 * 7 map to the same speed as level 7 in these models.
7382 * 2-0 fan level (0..7 usually)
7383 * 0x00 = stop
7384 * 0x07 = max (set when temperatures critical)
7385 * Some ThinkPads may have other levels, see
efa27145 7386 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
56b6aeb0
HMH		 7387 *
7388 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
b595076a 7389 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT
56b6aeb0
HMH		 7390 * does so, its initial value is meaningless (0x07).
7391 *
7392 * For firmware bugs, refer to:
7393 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7394 *
7395 * ----
7396 *
7397 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7398 * Main fan tachometer reading (in RPM)
7399 *
7400 * This register is present on all ThinkPads with a new-style EC, and
7401 * it is known not to be present on the A21m/e, and T22, as there is
7402 * something else in offset 0x84 according to the ACPI DSDT. Other
7403 * ThinkPads from this same time period (and earlier) probably lack the
7404 * tachometer as well.
7405 *
877d0310 7406 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
56b6aeb0
HMH		 7407 * was never fixed by IBM to report the EC firmware version string
7408 * probably support the tachometer (like the early X models), so
7409 * detecting it is quite hard. We need more data to know for sure.
7410 *
7411 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7412 * might result.
7413 *
f51d1a39
HMH		 7414 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7415 * mode.
56b6aeb0
HMH		 7416 *
7417 * For firmware bugs, refer to:
7418 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7419 *
d7377247
HMH		 7420 * ----
7421 *
7422 * ThinkPad EC register 0x31 bit 0 (only on select models)
7423 *
7424 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7425 * show the speed of the main fan. When bit 0 of EC register 0x31
7426 * is one, the tachometer registers show the speed of the auxiliary
7427 * fan.
7428 *
7429 * Fan control seems to affect both fans, regardless of the state
7430 * of this bit.
7431 *
7432 * So far, only the firmware for the X60/X61 non-tablet versions
7433 * seem to support this (firmware TP-7M).
7434 *
efa27145 7435 * TPACPI_FAN_WR_ACPI_FANS:
56b6aeb0
HMH		 7436 * ThinkPad X31, X40, X41. Not available in the X60.
7437 *
7438 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7439 * high speed. ACPI DSDT seems to map these three speeds to levels
7440 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7441 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7442 *
7443 * The speeds are stored on handles
7444 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7445 *
af901ca1 7446 * There are three default speed sets, accessible as handles:
56b6aeb0
HMH		 7447 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7448 *
7449 * ACPI DSDT switches which set is in use depending on various
7450 * factors.
7451 *
efa27145 7452 * TPACPI_FAN_WR_TPEC is also available and should be used to
56b6aeb0
HMH		 7453 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7454 * but the ACPI tables just mention level 7.
7455 */
7456
f74a27d4
HMH		 7457enum { /* Fan control constants */
7458 fan_status_offset = 0x2f, /* EC register 0x2f */
7459 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7460 * 0x84 must be read before 0x85 */
d7377247
HMH		 7461 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
7462 bit 0 selects which fan is active */
f74a27d4
HMH		 7463
7464 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
7465 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
7466
7467 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
7468};
7469
7470enum fan_status_access_mode {
7471 TPACPI_FAN_NONE = 0, /* No fan status or control */
7472 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
7473 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7474};
7475
7476enum fan_control_access_mode {
7477 TPACPI_FAN_WR_NONE = 0, /* No fan control */
7478 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
7479 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
7480 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
7481};
7482
7483enum fan_control_commands {
7484 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
7485 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
7486 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
7487 * and also watchdog cmd */
7488};
7489
90ab5ee9 7490static bool fan_control_allowed;
f74a27d4 7491
69ba91cb
HMH		 7492static enum fan_status_access_mode fan_status_access_mode;
7493static enum fan_control_access_mode fan_control_access_mode;
7494static enum fan_control_commands fan_control_commands;
78f81cc4 7495
778b4d74 7496static u8 fan_control_initial_status;
fe98a52c 7497static u8 fan_control_desired_level;
0081b162 7498static u8 fan_control_resume_level;
f74a27d4
HMH		 7499static int fan_watchdog_maxinterval;
7500
7501static struct mutex fan_mutex;
778b4d74 7502
25c68a33 7503static void fan_watchdog_fire(struct work_struct *ignored);
25c68a33 7504static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
16663a87 7505
e0c7dfe7
HMH		 7506TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
7507TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
56b6aeb0
HMH		 7508 "\\FSPD", /* 600e/x, 770e, 770x */
7509 ); /* all others */
e0c7dfe7 7510TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
56b6aeb0
HMH		 7511 "JFNS", /* 770x-JL */
7512 ); /* all others */
7513
1c2ece75
HMH		 7514/*
7515 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7516 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7517 * be in auto mode (0x80).
7518 *
7519 * This is corrected by any write to HFSP either by the driver, or
7520 * by the firmware.
7521 *
7522 * We assume 0x07 really means auto mode while this quirk is active,
7523 * as this is far more likely than the ThinkPad being in level 7,
7524 * which is only used by the firmware during thermal emergencies.
7d95a3d5
HMH		 7525 *
7526 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7527 * TP-70 (T43, R52), which are known to be buggy.
1c2ece75
HMH		 7528 */
7529
7d95a3d5 7530static void fan_quirk1_setup(void)
1c2ece75 7531{
1c2ece75 7532 if (fan_control_initial_status == 0x07) {
0978e012
JP		 7533 pr_notice("fan_init: initial fan status is unknown, "
7534 "assuming it is in auto mode\n");
7d95a3d5 7535 tp_features.fan_ctrl_status_undef = 1;
1c2ece75
HMH		 7536 }
7537}
7538
7539static void fan_quirk1_handle(u8 *fan_status)
7540{
7541 if (unlikely(tp_features.fan_ctrl_status_undef)) {
7542 if (*fan_status != fan_control_initial_status) {
7543 /* something changed the HFSP regisnter since
7544 * driver init time, so it is not undefined
7545 * anymore */
7546 tp_features.fan_ctrl_status_undef = 0;
7547 } else {
7548 /* Return most likely status. In fact, it
7549 * might be the only possible status */
7550 *fan_status = TP_EC_FAN_AUTO;
7551 }
7552 }
7553}
7554
d7377247
HMH		 7555/* Select main fan on X60/X61, NOOP on others */
7556static bool fan_select_fan1(void)
7557{
7558 if (tp_features.second_fan) {
7559 u8 val;
7560
7561 if (ec_read(fan_select_offset, &val) < 0)
7562 return false;
7563 val &= 0xFEU;
7564 if (ec_write(fan_select_offset, val) < 0)
7565 return false;
7566 }
7567 return true;
7568}
7569
7570/* Select secondary fan on X60/X61 */
7571static bool fan_select_fan2(void)
7572{
7573 u8 val;
7574
7575 if (!tp_features.second_fan)
7576 return false;
7577
7578 if (ec_read(fan_select_offset, &val) < 0)
7579 return false;
7580 val |= 0x01U;
7581 if (ec_write(fan_select_offset, val) < 0)
7582 return false;
7583
7584 return true;
7585}
7586
fe98a52c 7587/*
b21a15f6 7588 * Call with fan_mutex held
fe98a52c 7589 */
b21a15f6 7590static void fan_update_desired_level(u8 status)
fe98a52c 7591{
b21a15f6
HMH		 7592 if ((status &
7593 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7594 if (status > 7)
7595 fan_control_desired_level = 7;
7596 else
7597 fan_control_desired_level = status;
7598 }
7599}
fe98a52c 7600
b21a15f6
HMH		 7601static int fan_get_status(u8 *status)
7602{
7603 u8 s;
fe98a52c 7604
b21a15f6
HMH		 7605 /* TODO:
7606 * Add TPACPI_FAN_RD_ACPI_FANS ? */
fe98a52c 7607
b21a15f6 7608 switch (fan_status_access_mode) {
eceeb437 7609 case TPACPI_FAN_RD_ACPI_GFAN: {
b21a15f6 7610 /* 570, 600e/x, 770e, 770x */
eceeb437 7611 int res;
fe98a52c 7612
eceeb437 7613 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d")))
b21a15f6 7614 return -EIO;
fe98a52c 7615
b21a15f6 7616 if (likely(status))
eceeb437 7617 *status = res & 0x07;
fe98a52c 7618
b21a15f6 7619 break;
eceeb437 7620 }
b21a15f6
HMH		 7621 case TPACPI_FAN_RD_TPEC:
7622 /* all except 570, 600e/x, 770e, 770x */
7623 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
7624 return -EIO;
7625
1c2ece75 7626 if (likely(status)) {
b21a15f6 7627 *status = s;
1c2ece75
HMH		 7628 fan_quirk1_handle(status);
7629 }
fe98a52c 7630
fe98a52c 7631 break;
b21a15f6 7632
fe98a52c 7633 default:
b21a15f6 7634 return -ENXIO;
fe98a52c
HMH		 7635 }
7636
b21a15f6
HMH		 7637 return 0;
7638}
fe98a52c 7639
b21a15f6
HMH		 7640static int fan_get_status_safe(u8 *status)
7641{
7642 int rc;
7643 u8 s;
fe98a52c 7644
7646ea88 7645 if (mutex_lock_killable(&fan_mutex))
b21a15f6
HMH		 7646 return -ERESTARTSYS;
7647 rc = fan_get_status(&s);
7648 if (!rc)
7649 fan_update_desired_level(s);
7650 mutex_unlock(&fan_mutex);
fe98a52c 7651
b21a15f6
HMH		 7652 if (status)
7653 *status = s;
fe98a52c 7654
b21a15f6
HMH		 7655 return rc;
7656}
7657
7658static int fan_get_speed(unsigned int *speed)
fe98a52c 7659{
b21a15f6 7660 u8 hi, lo;
fe98a52c 7661
b21a15f6
HMH		 7662 switch (fan_status_access_mode) {
7663 case TPACPI_FAN_RD_TPEC:
7664 /* all except 570, 600e/x, 770e, 770x */
d7377247
HMH		 7665 if (unlikely(!fan_select_fan1()))
7666 return -EIO;
b21a15f6
HMH		 7667 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
7668 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
7669 return -EIO;
fe98a52c 7670
b21a15f6
HMH		 7671 if (likely(speed))
7672 *speed = (hi << 8) | lo;
fe98a52c 7673
b21a15f6 7674 break;
fe98a52c 7675
b21a15f6
HMH		 7676 default:
7677 return -ENXIO;
7678 }
fe98a52c 7679
b21a15f6 7680 return 0;
fe98a52c
HMH		 7681}
7682
d7377247
HMH		 7683static int fan2_get_speed(unsigned int *speed)
7684{
7685 u8 hi, lo;
7686 bool rc;
7687
7688 switch (fan_status_access_mode) {
7689 case TPACPI_FAN_RD_TPEC:
7690 /* all except 570, 600e/x, 770e, 770x */
7691 if (unlikely(!fan_select_fan2()))
7692 return -EIO;
7693 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
7694 !acpi_ec_read(fan_rpm_offset + 1, &hi);
7695 fan_select_fan1(); /* play it safe */
7696 if (rc)
7697 return -EIO;
7698
7699 if (likely(speed))
7700 *speed = (hi << 8) | lo;
7701
7702 break;
7703
7704 default:
7705 return -ENXIO;
7706 }
7707
7708 return 0;
7709}
7710
b21a15f6 7711static int fan_set_level(int level)
fe98a52c 7712{
b21a15f6
HMH		 7713 if (!fan_control_allowed)
7714 return -EPERM;
fe98a52c 7715
b21a15f6
HMH		 7716 switch (fan_control_access_mode) {
7717 case TPACPI_FAN_WR_ACPI_SFAN:
7718 if (level >= 0 && level <= 7) {
7719 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
7720 return -EIO;
7721 } else
7722 return -EINVAL;
7723 break;
fe98a52c 7724
b21a15f6
HMH		 7725 case TPACPI_FAN_WR_ACPI_FANS:
7726 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 7727 if (!(level & TP_EC_FAN_AUTO) &&
7728 !(level & TP_EC_FAN_FULLSPEED) &&
b21a15f6
HMH		 7729 ((level < 0) || (level > 7)))
7730 return -EINVAL;
fe98a52c 7731
b21a15f6
HMH		 7732 /* safety net should the EC not support AUTO
7733 * or FULLSPEED mode bits and just ignore them */
7734 if (level & TP_EC_FAN_FULLSPEED)
7735 level |= 7; /* safety min speed 7 */
547266e4 7736 else if (level & TP_EC_FAN_AUTO)
b21a15f6 7737 level |= 4; /* safety min speed 4 */
fe98a52c 7738
b21a15f6
HMH		 7739 if (!acpi_ec_write(fan_status_offset, level))
7740 return -EIO;
7741 else
7742 tp_features.fan_ctrl_status_undef = 0;
7743 break;
fe98a52c 7744
b21a15f6
HMH		 7745 default:
7746 return -ENXIO;
7747 }
74a60c0f
HMH		 7748
7749 vdbg_printk(TPACPI_DBG_FAN,
7750 "fan control: set fan control register to 0x%02x\n", level);
b21a15f6 7751 return 0;
fe98a52c
HMH		 7752}
7753
b21a15f6 7754static int fan_set_level_safe(int level)
fe98a52c 7755{
b21a15f6 7756 int rc;
fe98a52c 7757
b21a15f6
HMH		 7758 if (!fan_control_allowed)
7759 return -EPERM;
fe98a52c 7760
7646ea88 7761 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7762 return -ERESTARTSYS;
fe98a52c 7763
b21a15f6
HMH		 7764 if (level == TPACPI_FAN_LAST_LEVEL)
7765 level = fan_control_desired_level;
fe98a52c 7766
b21a15f6
HMH		 7767 rc = fan_set_level(level);
7768 if (!rc)
7769 fan_update_desired_level(level);
7770
7771 mutex_unlock(&fan_mutex);
7772 return rc;
fe98a52c
HMH		 7773}
7774
b21a15f6 7775static int fan_set_enable(void)
fe98a52c 7776{
b21a15f6
HMH		 7777 u8 s;
7778 int rc;
fe98a52c 7779
ecf2a80a
HMH		 7780 if (!fan_control_allowed)
7781 return -EPERM;
7782
7646ea88 7783 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7784 return -ERESTARTSYS;
fe98a52c 7785
b21a15f6
HMH		 7786 switch (fan_control_access_mode) {
7787 case TPACPI_FAN_WR_ACPI_FANS:
7788 case TPACPI_FAN_WR_TPEC:
7789 rc = fan_get_status(&s);
7790 if (rc < 0)
7791 break;
fe98a52c 7792
b21a15f6
HMH		 7793 /* Don't go out of emergency fan mode */
7794 if (s != 7) {
7795 s &= 0x07;
7796 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
7797 }
fe98a52c 7798
b21a15f6
HMH		 7799 if (!acpi_ec_write(fan_status_offset, s))
7800 rc = -EIO;
7801 else {
7802 tp_features.fan_ctrl_status_undef = 0;
7803 rc = 0;
7804 }
7805 break;
fe98a52c 7806
b21a15f6
HMH		 7807 case TPACPI_FAN_WR_ACPI_SFAN:
7808 rc = fan_get_status(&s);
7809 if (rc < 0)
7810 break;
fe98a52c 7811
b21a15f6 7812 s &= 0x07;
fe98a52c 7813
b21a15f6
HMH		 7814 /* Set fan to at least level 4 */
7815 s |= 4;
fe08bc4b 7816
b21a15f6 7817 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
35ff8b9f 7818 rc = -EIO;
b21a15f6
HMH		 7819 else
7820 rc = 0;
7821 break;
78f81cc4 7822
b21a15f6
HMH		 7823 default:
7824 rc = -ENXIO;
7825 }
5fba344c 7826
b21a15f6 7827 mutex_unlock(&fan_mutex);
74a60c0f
HMH		 7828
7829 if (!rc)
7830 vdbg_printk(TPACPI_DBG_FAN,
7831 "fan control: set fan control register to 0x%02x\n",
7832 s);
b21a15f6 7833 return rc;
69ba91cb 7834}
78f81cc4 7835
b21a15f6 7836static int fan_set_disable(void)
78f81cc4 7837{
b21a15f6 7838 int rc;
c52f0aa5 7839
b21a15f6
HMH		 7840 if (!fan_control_allowed)
7841 return -EPERM;
78f81cc4 7842
7646ea88 7843 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7844 return -ERESTARTSYS;
3ef8a609 7845
b21a15f6
HMH		 7846 rc = 0;
7847 switch (fan_control_access_mode) {
7848 case TPACPI_FAN_WR_ACPI_FANS:
7849 case TPACPI_FAN_WR_TPEC:
7850 if (!acpi_ec_write(fan_status_offset, 0x00))
7851 rc = -EIO;
7852 else {
7853 fan_control_desired_level = 0;
7854 tp_features.fan_ctrl_status_undef = 0;
7855 }
3ef8a609
HMH		 7856 break;
7857
b21a15f6
HMH		 7858 case TPACPI_FAN_WR_ACPI_SFAN:
7859 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
7860 rc = -EIO;
7861 else
7862 fan_control_desired_level = 0;
c52f0aa5
HMH		 7863 break;
7864
7865 default:
b21a15f6 7866 rc = -ENXIO;
78f81cc4
BD		 7867 }
7868
74a60c0f
HMH		 7869 if (!rc)
7870 vdbg_printk(TPACPI_DBG_FAN,
7871 "fan control: set fan control register to 0\n");
fe98a52c 7872
fe98a52c 7873 mutex_unlock(&fan_mutex);
fe98a52c
HMH		 7874 return rc;
7875}
7876
b21a15f6 7877static int fan_set_speed(int speed)
c52f0aa5 7878{
b21a15f6 7879 int rc;
c52f0aa5 7880
b21a15f6
HMH		 7881 if (!fan_control_allowed)
7882 return -EPERM;
3ef8a609 7883
7646ea88 7884 if (mutex_lock_killable(&fan_mutex))
b21a15f6 7885 return -ERESTARTSYS;
c52f0aa5 7886
b21a15f6
HMH		 7887 rc = 0;
7888 switch (fan_control_access_mode) {
7889 case TPACPI_FAN_WR_ACPI_FANS:
7890 if (speed >= 0 && speed <= 65535) {
7891 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
7892 speed, speed, speed))
7893 rc = -EIO;
7894 } else
7895 rc = -EINVAL;
c52f0aa5
HMH		 7896 break;
7897
7898 default:
b21a15f6 7899 rc = -ENXIO;
c52f0aa5
HMH		 7900 }
7901
b21a15f6
HMH		 7902 mutex_unlock(&fan_mutex);
7903 return rc;
16663a87
HMH		 7904}
7905
7906static void fan_watchdog_reset(void)
7907{
4985cd0a
HMH		 7908 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
7909 return;
7910
8fef502e 7911 if (fan_watchdog_maxinterval > 0 &&
41f63c53
TH		 7912 tpacpi_lifecycle != TPACPI_LIFE_EXITING)
7913 mod_delayed_work(tpacpi_wq, &fan_watchdog_task,
7914 msecs_to_jiffies(fan_watchdog_maxinterval * 1000));
7915 else
7916 cancel_delayed_work(&fan_watchdog_task);
16663a87
HMH		 7917}
7918
b21a15f6 7919static void fan_watchdog_fire(struct work_struct *ignored)
78f81cc4 7920{
b21a15f6 7921 int rc;
18ad7996 7922
b21a15f6
HMH		 7923 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
7924 return;
a12095c2 7925
0978e012 7926 pr_notice("fan watchdog: enabling fan\n");
b21a15f6
HMH		 7927 rc = fan_set_enable();
7928 if (rc < 0) {
0978e012
JP		 7929 pr_err("fan watchdog: error %d while enabling fan, "
7930 "will try again later...\n", -rc);
b21a15f6
HMH		 7931 /* reschedule for later */
7932 fan_watchdog_reset();
7933 }
7934}
eaa7571b 7935
b21a15f6
HMH		 7936/*
7937 * SYSFS fan layout: hwmon compatible (device)
7938 *
7939 * pwm*_enable:
7940 * 0: "disengaged" mode
7941 * 1: manual mode
7942 * 2: native EC "auto" mode (recommended, hardware default)
7943 *
7944 * pwm*: set speed in manual mode, ignored otherwise.
7945 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7946 * interpolation.
7947 *
7948 * fan*_input: tachometer reading, RPM
7949 *
7950 *
7951 * SYSFS fan layout: extensions
7952 *
7953 * fan_watchdog (driver):
7954 * fan watchdog interval in seconds, 0 disables (default), max 120
7955 */
7956
7957/* sysfs fan pwm1_enable ----------------------------------------------- */
7958static ssize_t fan_pwm1_enable_show(struct device *dev,
7959 struct device_attribute *attr,
7960 char *buf)
7961{
7962 int res, mode;
7963 u8 status;
7964
7965 res = fan_get_status_safe(&status);
7966 if (res)
7967 return res;
7968
b21a15f6
HMH		 7969 if (status & TP_EC_FAN_FULLSPEED) {
7970 mode = 0;
7971 } else if (status & TP_EC_FAN_AUTO) {
7972 mode = 2;
7973 } else
7974 mode = 1;
7975
7976 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
7977}
a12095c2 7978
b21a15f6
HMH		 7979static ssize_t fan_pwm1_enable_store(struct device *dev,
7980 struct device_attribute *attr,
7981 const char *buf, size_t count)
7982{
7983 unsigned long t;
7984 int res, level;
7985
7986 if (parse_strtoul(buf, 2, &t))
7987 return -EINVAL;
7988
74a60c0f
HMH		 7989 tpacpi_disclose_usertask("hwmon pwm1_enable",
7990 "set fan mode to %lu\n", t);
7991
b21a15f6
HMH		 7992 switch (t) {
7993 case 0:
7994 level = TP_EC_FAN_FULLSPEED;
7995 break;
7996 case 1:
7997 level = TPACPI_FAN_LAST_LEVEL;
7998 break;
7999 case 2:
8000 level = TP_EC_FAN_AUTO;
8001 break;
8002 case 3:
8003 /* reserved for software-controlled auto mode */
8004 return -ENOSYS;
18ad7996 8005 default:
b21a15f6 8006 return -EINVAL;
18ad7996 8007 }
b21a15f6
HMH		 8008
8009 res = fan_set_level_safe(level);
8010 if (res == -ENXIO)
8011 return -EINVAL;
8012 else if (res < 0)
8013 return res;
8014
8015 fan_watchdog_reset();
8016
8017 return count;
18ad7996
HMH		 8018}
8019
b21a15f6
HMH		 8020static struct device_attribute dev_attr_fan_pwm1_enable =
8021 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
8022 fan_pwm1_enable_show, fan_pwm1_enable_store);
8023
8024/* sysfs fan pwm1 ------------------------------------------------------ */
8025static ssize_t fan_pwm1_show(struct device *dev,
8026 struct device_attribute *attr,
8027 char *buf)
fe98a52c 8028{
b21a15f6
HMH		 8029 int res;
8030 u8 status;
fe98a52c 8031
b21a15f6
HMH		 8032 res = fan_get_status_safe(&status);
8033 if (res)
8034 return res;
ecf2a80a 8035
b21a15f6
HMH		 8036 if ((status &
8037 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
8038 status = fan_control_desired_level;
fe98a52c 8039
b21a15f6
HMH		 8040 if (status > 7)
8041 status = 7;
fe98a52c 8042
b21a15f6 8043 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
fe98a52c
HMH		 8044}
8045
b21a15f6
HMH		 8046static ssize_t fan_pwm1_store(struct device *dev,
8047 struct device_attribute *attr,
8048 const char *buf, size_t count)
18ad7996 8049{
b21a15f6 8050 unsigned long s;
1c6a334e 8051 int rc;
b21a15f6 8052 u8 status, newlevel;
1c6a334e 8053
b21a15f6
HMH		 8054 if (parse_strtoul(buf, 255, &s))
8055 return -EINVAL;
8056
74a60c0f
HMH		 8057 tpacpi_disclose_usertask("hwmon pwm1",
8058 "set fan speed to %lu\n", s);
8059
b21a15f6
HMH		 8060 /* scale down from 0-255 to 0-7 */
8061 newlevel = (s >> 5) & 0x07;
ecf2a80a 8062
7646ea88 8063 if (mutex_lock_killable(&fan_mutex))
fc589a3c 8064 return -ERESTARTSYS;
40ca9fdf 8065
b21a15f6
HMH		 8066 rc = fan_get_status(&status);
8067 if (!rc && (status &
8068 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
8069 rc = fan_set_level(newlevel);
8070 if (rc == -ENXIO)
8071 rc = -EINVAL;
8072 else if (!rc) {
8073 fan_update_desired_level(newlevel);
8074 fan_watchdog_reset();
eaa7571b 8075 }
b21a15f6 8076 }
1c6a334e 8077
b21a15f6 8078 mutex_unlock(&fan_mutex);
72a979f0 8079 return (rc) ? rc : count;
b21a15f6 8080}
1c6a334e 8081
b21a15f6
HMH		 8082static struct device_attribute dev_attr_fan_pwm1 =
8083 __ATTR(pwm1, S_IWUSR | S_IRUGO,
8084 fan_pwm1_show, fan_pwm1_store);
1c6a334e 8085
b21a15f6
HMH		 8086/* sysfs fan fan1_input ------------------------------------------------ */
8087static ssize_t fan_fan1_input_show(struct device *dev,
8088 struct device_attribute *attr,
8089 char *buf)
8090{
8091 int res;
8092 unsigned int speed;
1c6a334e 8093
b21a15f6
HMH		 8094 res = fan_get_speed(&speed);
8095 if (res < 0)
8096 return res;
1c6a334e 8097
b21a15f6
HMH		 8098 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
8099}
18ad7996 8100
b21a15f6
HMH		 8101static struct device_attribute dev_attr_fan_fan1_input =
8102 __ATTR(fan1_input, S_IRUGO,
8103 fan_fan1_input_show, NULL);
40ca9fdf 8104
d7377247
HMH		 8105/* sysfs fan fan2_input ------------------------------------------------ */
8106static ssize_t fan_fan2_input_show(struct device *dev,
8107 struct device_attribute *attr,
8108 char *buf)
8109{
8110 int res;
8111 unsigned int speed;
8112
8113 res = fan2_get_speed(&speed);
8114 if (res < 0)
8115 return res;
8116
8117 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
8118}
8119
8120static struct device_attribute dev_attr_fan_fan2_input =
8121 __ATTR(fan2_input, S_IRUGO,
8122 fan_fan2_input_show, NULL);
8123
b21a15f6
HMH		 8124/* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
8125static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
8126 char *buf)
8127{
8128 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
18ad7996
HMH		 8129}
8130
b21a15f6
HMH		 8131static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
8132 const char *buf, size_t count)
18ad7996 8133{
b21a15f6
HMH		 8134 unsigned long t;
8135
8136 if (parse_strtoul(buf, 120, &t))
8137 return -EINVAL;
40ca9fdf 8138
ecf2a80a
HMH		 8139 if (!fan_control_allowed)
8140 return -EPERM;
8141
b21a15f6
HMH		 8142 fan_watchdog_maxinterval = t;
8143 fan_watchdog_reset();
40ca9fdf 8144
74a60c0f
HMH		 8145 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
8146
b21a15f6
HMH		 8147 return count;
8148}
8149
8150static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
8151 fan_fan_watchdog_show, fan_fan_watchdog_store);
8152
8153/* --------------------------------------------------------------------- */
8154static struct attribute *fan_attributes[] = {
8155 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
8156 &dev_attr_fan_fan1_input.attr,
d7377247 8157 NULL, /* for fan2_input */
b21a15f6
HMH		 8158 NULL
8159};
8160
8161static const struct attribute_group fan_attr_group = {
8162 .attrs = fan_attributes,
8163};
8164
d7377247
HMH		 8165#define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
8166#define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7d95a3d5
HMH		 8167
8168#define TPACPI_FAN_QI(__id1, __id2, __quirks) \
8169 { .vendor = PCI_VENDOR_ID_IBM, \
8170 .bios = TPACPI_MATCH_ANY, \
8171 .ec = TPID(__id1, __id2), \
8172 .quirks = __quirks }
8173
d7377247
HMH		 8174#define TPACPI_FAN_QL(__id1, __id2, __quirks) \
8175 { .vendor = PCI_VENDOR_ID_LENOVO, \
8176 .bios = TPACPI_MATCH_ANY, \
8177 .ec = TPID(__id1, __id2), \
8178 .quirks = __quirks }
8179
7d95a3d5
HMH		 8180static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
8181 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
8182 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
8183 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
8184 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
d7377247 8185 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7d95a3d5
HMH		 8186};
8187
d7377247 8188#undef TPACPI_FAN_QL
7d95a3d5
HMH		 8189#undef TPACPI_FAN_QI
8190
b21a15f6
HMH		 8191static int __init fan_init(struct ibm_init_struct *iibm)
8192{
8193 int rc;
7d95a3d5 8194 unsigned long quirks;
b21a15f6 8195
74a60c0f
HMH		 8196 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8197 "initializing fan subdriver\n");
b21a15f6
HMH		 8198
8199 mutex_init(&fan_mutex);
8200 fan_status_access_mode = TPACPI_FAN_NONE;
8201 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8202 fan_control_commands = 0;
8203 fan_watchdog_maxinterval = 0;
8204 tp_features.fan_ctrl_status_undef = 0;
d7377247 8205 tp_features.second_fan = 0;
b21a15f6
HMH		 8206 fan_control_desired_level = 7;
8207
e28393c0
HMH		 8208 if (tpacpi_is_ibm()) {
8209 TPACPI_ACPIHANDLE_INIT(fans);
8210 TPACPI_ACPIHANDLE_INIT(gfan);
8211 TPACPI_ACPIHANDLE_INIT(sfan);
8212 }
b21a15f6 8213
7d95a3d5
HMH		 8214 quirks = tpacpi_check_quirks(fan_quirk_table,
8215 ARRAY_SIZE(fan_quirk_table));
8216
b21a15f6
HMH		 8217 if (gfan_handle) {
8218 /* 570, 600e/x, 770e, 770x */
8219 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
8220 } else {
8221 /* all other ThinkPads: note that even old-style
8222 * ThinkPad ECs supports the fan control register */
8223 if (likely(acpi_ec_read(fan_status_offset,
8224 &fan_control_initial_status))) {
8225 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7d95a3d5
HMH		 8226 if (quirks & TPACPI_FAN_Q1)
8227 fan_quirk1_setup();
d7377247
HMH		 8228 if (quirks & TPACPI_FAN_2FAN) {
8229 tp_features.second_fan = 1;
8230 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8231 "secondary fan support enabled\n");
8232 }
b21a15f6 8233 } else {
0978e012 8234 pr_err("ThinkPad ACPI EC access misbehaving, "
b21a15f6
HMH		 8235 "fan status and control unavailable\n");
8236 return 1;
8237 }
8238 }
8239
8240 if (sfan_handle) {
8241 /* 570, 770x-JL */
8242 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
8243 fan_control_commands |=
8244 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
8245 } else {
8246 if (!gfan_handle) {
8247 /* gfan without sfan means no fan control */
8248 /* all other models implement TP EC 0x2f control */
8249
8250 if (fans_handle) {
8251 /* X31, X40, X41 */
8252 fan_control_access_mode =
8253 TPACPI_FAN_WR_ACPI_FANS;
8254 fan_control_commands |=
8255 TPACPI_FAN_CMD_SPEED |
8256 TPACPI_FAN_CMD_LEVEL |
8257 TPACPI_FAN_CMD_ENABLE;
8258 } else {
8259 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
8260 fan_control_commands |=
8261 TPACPI_FAN_CMD_LEVEL |
8262 TPACPI_FAN_CMD_ENABLE;
8263 }
fe98a52c 8264 }
b21a15f6 8265 }
18ad7996 8266
74a60c0f
HMH		 8267 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
8268 "fan is %s, modes %d, %d\n",
b21a15f6
HMH		 8269 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
8270 fan_control_access_mode != TPACPI_FAN_WR_NONE),
8271 fan_status_access_mode, fan_control_access_mode);
1c6a334e 8272
b21a15f6
HMH		 8273 /* fan control master switch */
8274 if (!fan_control_allowed) {
8275 fan_control_access_mode = TPACPI_FAN_WR_NONE;
8276 fan_control_commands = 0;
74a60c0f 8277 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
b21a15f6 8278 "fan control features disabled by parameter\n");
18ad7996 8279 }
40ca9fdf 8280
b21a15f6
HMH		 8281 /* update fan_control_desired_level */
8282 if (fan_status_access_mode != TPACPI_FAN_NONE)
8283 fan_get_status_safe(NULL);
fe98a52c 8284
b21a15f6
HMH		 8285 if (fan_status_access_mode != TPACPI_FAN_NONE ||
8286 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
d7377247
HMH		 8287 if (tp_features.second_fan) {
8288 /* attach second fan tachometer */
8289 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
8290 &dev_attr_fan_fan2_input.attr;
8291 }
b21a15f6
HMH		 8292 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
8293 &fan_attr_group);
b21a15f6
HMH		 8294 if (rc < 0)
8295 return rc;
9c0a76e1
HMH		 8296
8297 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
8298 &driver_attr_fan_watchdog);
8299 if (rc < 0) {
8300 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
8301 &fan_attr_group);
8302 return rc;
8303 }
b21a15f6
HMH		 8304 return 0;
8305 } else
8306 return 1;
56b6aeb0
HMH		 8307}
8308
b21a15f6 8309static void fan_exit(void)
56b6aeb0 8310{
74a60c0f 8311 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
35ff8b9f 8312 "cancelling any pending fan watchdog tasks\n");
56b6aeb0 8313
b21a15f6
HMH		 8314 /* FIXME: can we really do this unconditionally? */
8315 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
35ff8b9f
HMH		 8316 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
8317 &driver_attr_fan_watchdog);
40ca9fdf 8318
b21a15f6 8319 cancel_delayed_work(&fan_watchdog_task);
e0e3c061 8320 flush_workqueue(tpacpi_wq);
56b6aeb0
HMH		 8321}
8322
fd3c3a42 8323static void fan_suspend(void)
75700e53 8324{
0081b162
HMH		 8325 int rc;
8326
75700e53
HMH		 8327 if (!fan_control_allowed)
8328 return;
8329
8330 /* Store fan status in cache */
0081b162
HMH		 8331 fan_control_resume_level = 0;
8332 rc = fan_get_status_safe(&fan_control_resume_level);
8333 if (rc < 0)
0978e012
JP		 8334 pr_notice("failed to read fan level for later "
8335 "restore during resume: %d\n", rc);
0081b162
HMH		 8336
8337 /* if it is undefined, don't attempt to restore it.
8338 * KEEP THIS LAST */
75700e53 8339 if (tp_features.fan_ctrl_status_undef)
0081b162 8340 fan_control_resume_level = 0;
75700e53
HMH		 8341}
8342
8343static void fan_resume(void)
8344{
75700e53
HMH		 8345 u8 current_level = 7;
8346 bool do_set = false;
0081b162 8347 int rc;
75700e53
HMH		 8348
8349 /* DSDT *always* updates status on resume */
8350 tp_features.fan_ctrl_status_undef = 0;
8351
75700e53 8352 if (!fan_control_allowed ||
0081b162 8353 !fan_control_resume_level ||
75700e53
HMH		 8354 (fan_get_status_safe(&current_level) < 0))
8355 return;
8356
8357 switch (fan_control_access_mode) {
8358 case TPACPI_FAN_WR_ACPI_SFAN:
0081b162
HMH		 8359 /* never decrease fan level */
8360 do_set = (fan_control_resume_level > current_level);
75700e53
HMH		 8361 break;
8362 case TPACPI_FAN_WR_ACPI_FANS:
8363 case TPACPI_FAN_WR_TPEC:
0081b162
HMH		 8364 /* never decrease fan level, scale is:
8365 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8366 *
8367 * We expect the firmware to set either 7 or AUTO, but we
8368 * handle FULLSPEED out of paranoia.
8369 *
8370 * So, we can safely only restore FULLSPEED or 7, anything
8371 * else could slow the fan. Restoring AUTO is useless, at
8372 * best that's exactly what the DSDT already set (it is the
8373 * slower it uses).
8374 *
8375 * Always keep in mind that the DSDT *will* have set the
8376 * fans to what the vendor supposes is the best level. We
8377 * muck with it only to speed the fan up.
8378 */
8379 if (fan_control_resume_level != 7 &&
8380 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
8381 return;
8382 else
8383 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
8384 (current_level != fan_control_resume_level);
75700e53
HMH		 8385 break;
8386 default:
8387 return;
8388 }
8389 if (do_set) {
0978e012
JP		 8390 pr_notice("restoring fan level to 0x%02x\n",
8391 fan_control_resume_level);
0081b162
HMH		 8392 rc = fan_set_level_safe(fan_control_resume_level);
8393 if (rc < 0)
0978e012 8394 pr_notice("failed to restore fan level: %d\n", rc);
75700e53
HMH		 8395 }
8396}
8397
887965e6 8398static int fan_read(struct seq_file *m)
56b6aeb0 8399{
56b6aeb0
HMH		 8400 int rc;
8401 u8 status;
8402 unsigned int speed = 0;
8403
8404 switch (fan_status_access_mode) {
efa27145 8405 case TPACPI_FAN_RD_ACPI_GFAN:
56b6aeb0 8406 /* 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8407 rc = fan_get_status_safe(&status);
8408 if (rc < 0)
56b6aeb0
HMH		 8409 return rc;
8410
887965e6 8411 seq_printf(m, "status:\t\t%s\n"
56b6aeb0
HMH		 8412 "level:\t\t%d\n",
8413 (status != 0) ? "enabled" : "disabled", status);
8414 break;
8415
efa27145 8416 case TPACPI_FAN_RD_TPEC:
56b6aeb0 8417 /* all except 570, 600e/x, 770e, 770x */
35ff8b9f
HMH		 8418 rc = fan_get_status_safe(&status);
8419 if (rc < 0)
56b6aeb0
HMH		 8420 return rc;
8421
887965e6 8422 seq_printf(m, "status:\t\t%s\n",
56b6aeb0
HMH		 8423 (status != 0) ? "enabled" : "disabled");
8424
35ff8b9f
HMH		 8425 rc = fan_get_speed(&speed);
8426 if (rc < 0)
56b6aeb0
HMH		 8427 return rc;
8428
887965e6 8429 seq_printf(m, "speed:\t\t%d\n", speed);
56b6aeb0 8430
efa27145 8431 if (status & TP_EC_FAN_FULLSPEED)
56b6aeb0 8432 /* Disengaged mode takes precedence */
887965e6 8433 seq_printf(m, "level:\t\tdisengaged\n");
efa27145 8434 else if (status & TP_EC_FAN_AUTO)
887965e6 8435 seq_printf(m, "level:\t\tauto\n");
56b6aeb0 8436 else
887965e6 8437 seq_printf(m, "level:\t\t%d\n", status);
56b6aeb0
HMH		 8438 break;
8439
efa27145 8440 case TPACPI_FAN_NONE:
56b6aeb0 8441 default:
887965e6 8442 seq_printf(m, "status:\t\tnot supported\n");
56b6aeb0
HMH		 8443 }
8444
efa27145 8445 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
887965e6 8446 seq_printf(m, "commands:\tlevel <level>");
56b6aeb0
HMH		 8447
8448 switch (fan_control_access_mode) {
efa27145 8449 case TPACPI_FAN_WR_ACPI_SFAN:
887965e6 8450 seq_printf(m, " (<level> is 0-7)\n");
56b6aeb0
HMH		 8451 break;
8452
8453 default:
887965e6 8454 seq_printf(m, " (<level> is 0-7, "
fe98a52c 8455 "auto, disengaged, full-speed)\n");
56b6aeb0
HMH		 8456 break;
8457 }
8458 }
18ad7996 8459
efa27145 8460 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
887965e6 8461 seq_printf(m, "commands:\tenable, disable\n"
35ff8b9f
HMH		 8462 "commands:\twatchdog <timeout> (<timeout> "
8463 "is 0 (off), 1-120 (seconds))\n");
1da177e4 8464
efa27145 8465 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
887965e6 8466 seq_printf(m, "commands:\tspeed <speed>"
56b6aeb0
HMH		 8467 " (<speed> is 0-65535)\n");
8468
887965e6 8469 return 0;
78f81cc4
BD		 8470}
8471
18ad7996
HMH		 8472static int fan_write_cmd_level(const char *cmd, int *rc)
8473{
8474 int level;
8475
a12095c2 8476 if (strlencmp(cmd, "level auto") == 0)
efa27145 8477 level = TP_EC_FAN_AUTO;
fe98a52c 8478 else if ((strlencmp(cmd, "level disengaged") == 0) |
35ff8b9f 8479 (strlencmp(cmd, "level full-speed") == 0))
efa27145 8480 level = TP_EC_FAN_FULLSPEED;
a12095c2 8481 else if (sscanf(cmd, "level %d", &level) != 1)
18ad7996
HMH		 8482 return 0;
8483
35ff8b9f
HMH		 8484 *rc = fan_set_level_safe(level);
8485 if (*rc == -ENXIO)
0978e012
JP		 8486 pr_err("level command accepted for unsupported access mode %d\n",
8487 fan_control_access_mode);
74a60c0f
HMH		 8488 else if (!*rc)
8489 tpacpi_disclose_usertask("procfs fan",
8490 "set level to %d\n", level);
18ad7996
HMH		 8491
8492 return 1;
8493}
8494
8495static int fan_write_cmd_enable(const char *cmd, int *rc)
8496{
8497 if (strlencmp(cmd, "enable") != 0)
8498 return 0;
8499
35ff8b9f
HMH		 8500 *rc = fan_set_enable();
8501 if (*rc == -ENXIO)
0978e012
JP		 8502 pr_err("enable command accepted for unsupported access mode %d\n",
8503 fan_control_access_mode);
74a60c0f
HMH		 8504 else if (!*rc)
8505 tpacpi_disclose_usertask("procfs fan", "enable\n");
18ad7996
HMH		 8506
8507 return 1;
8508}
8509
8510static int fan_write_cmd_disable(const char *cmd, int *rc)
8511{
8512 if (strlencmp(cmd, "disable") != 0)
8513 return 0;
8514
35ff8b9f
HMH		 8515 *rc = fan_set_disable();
8516 if (*rc == -ENXIO)
0978e012
JP		 8517 pr_err("disable command accepted for unsupported access mode %d\n",
8518 fan_control_access_mode);
74a60c0f
HMH		 8519 else if (!*rc)
8520 tpacpi_disclose_usertask("procfs fan", "disable\n");
18ad7996
HMH		 8521
8522 return 1;
8523}
8524
8525static int fan_write_cmd_speed(const char *cmd, int *rc)
8526{
8527 int speed;
8528
a8b7a662
HMH		 8529 /* TODO:
8530 * Support speed <low> <medium> <high> ? */
8531
18ad7996
HMH		 8532 if (sscanf(cmd, "speed %d", &speed) != 1)
8533 return 0;
8534
35ff8b9f
HMH		 8535 *rc = fan_set_speed(speed);
8536 if (*rc == -ENXIO)
0978e012
JP		 8537 pr_err("speed command accepted for unsupported access mode %d\n",
8538 fan_control_access_mode);
74a60c0f
HMH		 8539 else if (!*rc)
8540 tpacpi_disclose_usertask("procfs fan",
8541 "set speed to %d\n", speed);
18ad7996
HMH		 8542
8543 return 1;
8544}
8545
16663a87
HMH		 8546static int fan_write_cmd_watchdog(const char *cmd, int *rc)
8547{
8548 int interval;
8549
8550 if (sscanf(cmd, "watchdog %d", &interval) != 1)
8551 return 0;
8552
8553 if (interval < 0 || interval > 120)
8554 *rc = -EINVAL;
74a60c0f 8555 else {
16663a87 8556 fan_watchdog_maxinterval = interval;
74a60c0f
HMH		 8557 tpacpi_disclose_usertask("procfs fan",
8558 "set watchdog timer to %d\n",
8559 interval);
8560 }
16663a87
HMH		 8561
8562 return 1;
8563}
8564
18ad7996
HMH		 8565static int fan_write(char *buf)
8566{
8567 char *cmd;
8568 int rc = 0;
8569
8570 while (!rc && (cmd = next_cmd(&buf))) {
efa27145 8571 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
18ad7996 8572 fan_write_cmd_level(cmd, &rc)) &&
efa27145 8573 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
18ad7996 8574 (fan_write_cmd_enable(cmd, &rc) ||
16663a87
HMH		 8575 fan_write_cmd_disable(cmd, &rc) ||
8576 fan_write_cmd_watchdog(cmd, &rc))) &&
efa27145 8577 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
18ad7996
HMH		 8578 fan_write_cmd_speed(cmd, &rc))
8579 )
8580 rc = -EINVAL;
16663a87
HMH		 8581 else if (!rc)
8582 fan_watchdog_reset();
18ad7996
HMH		 8583 }
8584
8585 return rc;
8586}
8587
a5763f22
HMH		 8588static struct ibm_struct fan_driver_data = {
8589 .name = "fan",
8590 .read = fan_read,
8591 .write = fan_write,
8592 .exit = fan_exit,
75700e53
HMH		 8593 .suspend = fan_suspend,
8594 .resume = fan_resume,
a5763f22
HMH		 8595};
8596
420f9739
DH		 8597/*************************************************************************
8598 * Mute LED subdriver
8599 */
8600
8601
8602struct tp_led_table {
8603 acpi_string name;
8604 int on_value;
8605 int off_value;
8606 int state;
8607};
8608
8609static struct tp_led_table led_tables[] = {
8610 [TPACPI_LED_MUTE] = {
8611 .name = "SSMS",
8612 .on_value = 1,
8613 .off_value = 0,
8614 },
8615 [TPACPI_LED_MICMUTE] = {
8616 .name = "MMTS",
8617 .on_value = 2,
8618 .off_value = 0,
8619 },
8620};
8621
8622static int mute_led_on_off(struct tp_led_table *t, bool state)
8623{
8624 acpi_handle temp;
8625 int output;
8626
8627 if (!ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp))) {
8628 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name);
8629 return -EIO;
8630 }
8631
8632 if (!acpi_evalf(hkey_handle, &output, t->name, "dd",
8633 state ? t->on_value : t->off_value))
8634 return -EIO;
8635
8636 t->state = state;
8637 return state;
8638}
8639
8640int tpacpi_led_set(int whichled, bool on)
8641{
8642 struct tp_led_table *t;
8643
8644 if (whichled < 0 || whichled >= TPACPI_LED_MAX)
8645 return -EINVAL;
8646
8647 t = &led_tables[whichled];
8648 if (t->state < 0 || t->state == on)
8649 return t->state;
8650 return mute_led_on_off(t, on);
8651}
8652EXPORT_SYMBOL_GPL(tpacpi_led_set);
8653
8654static int mute_led_init(struct ibm_init_struct *iibm)
8655{
8656 acpi_handle temp;
8657 int i;
8658
8659 for (i = 0; i < TPACPI_LED_MAX; i++) {
8660 struct tp_led_table *t = &led_tables[i];
8661 if (ACPI_SUCCESS(acpi_get_handle(hkey_handle, t->name, &temp)))
8662 mute_led_on_off(t, false);
8663 else
8664 t->state = -ENODEV;
8665 }
8666 return 0;
8667}
8668
8669static void mute_led_exit(void)
8670{
8671 int i;
8672
8673 for (i = 0; i < TPACPI_LED_MAX; i++)
8674 tpacpi_led_set(i, false);
8675}
8676
119f4498
TI		 8677static void mute_led_resume(void)
8678{
8679 int i;
8680
8681 for (i = 0; i < TPACPI_LED_MAX; i++) {
8682 struct tp_led_table *t = &led_tables[i];
8683 if (t->state >= 0)
8684 mute_led_on_off(t, t->state);
8685 }
8686}
8687
420f9739
DH		 8688static struct ibm_struct mute_led_driver_data = {
8689 .name = "mute_led",
8690 .exit = mute_led_exit,
119f4498 8691 .resume = mute_led_resume,
420f9739
DH		 8692};
8693
56b6aeb0
HMH		 8694/****************************************************************************
8695 ****************************************************************************
8696 *
8697 * Infrastructure
8698 *
8699 ****************************************************************************
8700 ****************************************************************************/
8701
8b468c0c
HMH		 8702/*
8703 * HKEY event callout for other subdrivers go here
8704 * (yes, it is ugly, but it is quick, safe, and gets the job done
8705 */
8706static void tpacpi_driver_event(const unsigned int hkey_event)
8707{
347a2686
HMH		 8708 if (ibm_backlight_device) {
8709 switch (hkey_event) {
8710 case TP_HKEY_EV_BRGHT_UP:
8711 case TP_HKEY_EV_BRGHT_DOWN:
8712 tpacpi_brightness_notify_change();
8713 }
8714 }
0d204c34
HMH		 8715 if (alsa_card) {
8716 switch (hkey_event) {
8717 case TP_HKEY_EV_VOL_UP:
8718 case TP_HKEY_EV_VOL_DOWN:
8719 case TP_HKEY_EV_VOL_MUTE:
8720 volume_alsa_notify_change();
8721 }
8722 }
8b468c0c
HMH		 8723}
8724
8b468c0c
HMH		 8725static void hotkey_driver_event(const unsigned int scancode)
8726{
67bcae6e 8727 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8b468c0c
HMH		 8728}
8729
7fd40029
HMH		 8730/* sysfs name ---------------------------------------------------------- */
8731static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
8732 struct device_attribute *attr,
8733 char *buf)
8734{
e0c7dfe7 8735 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7fd40029
HMH		 8736}
8737
8738static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
8739 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
8740
8741/* --------------------------------------------------------------------- */
8742
56b6aeb0 8743/* /proc support */
94954cc6 8744static struct proc_dir_entry *proc_dir;
16663a87 8745
56b6aeb0
HMH		 8746/*
8747 * Module and infrastructure proble, init and exit handling
8748 */
1da177e4 8749
90ab5ee9 8750static bool force_load;
b21a15f6 8751
fe08bc4b 8752#ifdef CONFIG_THINKPAD_ACPI_DEBUG
a5763f22 8753static const char * __init str_supported(int is_supported)
fe08bc4b 8754{
a5763f22 8755 static char text_unsupported[] __initdata = "not supported";
fe08bc4b 8756
72a979f0 8757 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0];
fe08bc4b
HMH		 8758}
8759#endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8760
b21a15f6
HMH		 8761static void ibm_exit(struct ibm_struct *ibm)
8762{
8763 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
8764
8765 list_del_init(&ibm->all_drivers);
8766
8767 if (ibm->flags.acpi_notify_installed) {
8768 dbg_printk(TPACPI_DBG_EXIT,
8769 "%s: acpi_remove_notify_handler\n", ibm->name);
8770 BUG_ON(!ibm->acpi);
8771 acpi_remove_notify_handler(*ibm->acpi->handle,
8772 ibm->acpi->type,
8773 dispatch_acpi_notify);
8774 ibm->flags.acpi_notify_installed = 0;
b21a15f6
HMH		 8775 }
8776
8777 if (ibm->flags.proc_created) {
8778 dbg_printk(TPACPI_DBG_EXIT,
8779 "%s: remove_proc_entry\n", ibm->name);
8780 remove_proc_entry(ibm->name, proc_dir);
8781 ibm->flags.proc_created = 0;
8782 }
8783
8784 if (ibm->flags.acpi_driver_registered) {
8785 dbg_printk(TPACPI_DBG_EXIT,
8786 "%s: acpi_bus_unregister_driver\n", ibm->name);
8787 BUG_ON(!ibm->acpi);
8788 acpi_bus_unregister_driver(ibm->acpi->driver);
8789 kfree(ibm->acpi->driver);
8790 ibm->acpi->driver = NULL;
8791 ibm->flags.acpi_driver_registered = 0;
8792 }
8793
8794 if (ibm->flags.init_called && ibm->exit) {
8795 ibm->exit();
8796 ibm->flags.init_called = 0;
8797 }
8798
8799 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
8800}
f74a27d4 8801
a5763f22 8802static int __init ibm_init(struct ibm_init_struct *iibm)
1da177e4
LT		 8803{
8804 int ret;
a5763f22 8805 struct ibm_struct *ibm = iibm->data;
1da177e4
LT		 8806 struct proc_dir_entry *entry;
8807
a5763f22
HMH		 8808 BUG_ON(ibm == NULL);
8809
8810 INIT_LIST_HEAD(&ibm->all_drivers);
8811
92641177 8812 if (ibm->flags.experimental && !experimental)
1da177e4
LT		 8813 return 0;
8814
fe08bc4b
HMH		 8815 dbg_printk(TPACPI_DBG_INIT,
8816 "probing for %s\n", ibm->name);
8817
a5763f22
HMH		 8818 if (iibm->init) {
8819 ret = iibm->init(iibm);
5fba344c
HMH		 8820 if (ret > 0)
8821 return 0; /* probe failed */
8822 if (ret)
1da177e4 8823 return ret;
a5763f22 8824
92641177 8825 ibm->flags.init_called = 1;
1da177e4
LT		 8826 }
8827
8d376cd6
HMH		 8828 if (ibm->acpi) {
8829 if (ibm->acpi->hid) {
8830 ret = register_tpacpi_subdriver(ibm);
8831 if (ret)
8832 goto err_out;
8833 }
5fba344c 8834
8d376cd6
HMH		 8835 if (ibm->acpi->notify) {
8836 ret = setup_acpi_notify(ibm);
8837 if (ret == -ENODEV) {
0978e012
JP		 8838 pr_notice("disabling subdriver %s\n",
8839 ibm->name);
8d376cd6
HMH		 8840 ret = 0;
8841 goto err_out;
8842 }
8843 if (ret < 0)
8844 goto err_out;
5fba344c 8845 }
5fba344c
HMH		 8846 }
8847
fe08bc4b
HMH		 8848 dbg_printk(TPACPI_DBG_INIT,
8849 "%s installed\n", ibm->name);
8850
78f81cc4 8851 if (ibm->read) {
d161a13f 8852 umode_t mode = iibm->base_procfs_mode;
887965e6 8853
b525c06c
HMH		 8854 if (!mode)
8855 mode = S_IRUGO;
887965e6
AD		 8856 if (ibm->write)
8857 mode |= S_IWUSR;
8858 entry = proc_create_data(ibm->name, mode, proc_dir,
8859 &dispatch_proc_fops, ibm);
78f81cc4 8860 if (!entry) {
0978e012 8861 pr_err("unable to create proc entry %s\n", ibm->name);
5fba344c
HMH		 8862 ret = -ENODEV;
8863 goto err_out;
78f81cc4 8864 }
92641177 8865 ibm->flags.proc_created = 1;
78f81cc4 8866 }
1da177e4 8867
a5763f22
HMH		 8868 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
8869
1da177e4 8870 return 0;
5fba344c
HMH		 8871
8872err_out:
fe08bc4b
HMH		 8873 dbg_printk(TPACPI_DBG_INIT,
8874 "%s: at error exit path with result %d\n",
8875 ibm->name, ret);
8876
5fba344c 8877 ibm_exit(ibm);
72a979f0 8878 return (ret < 0) ? ret : 0;
1da177e4
LT		 8879}
8880
56b6aeb0
HMH		 8881/* Probing */
8882
050df107
HMH		 8883static bool __pure __init tpacpi_is_fw_digit(const char c)
8884{
8885 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
8886}
8887
72a979f0 8888static bool __pure __init tpacpi_is_valid_fw_id(const char * const s,
050df107
HMH		 8889 const char t)
8890{
1b0eb5bc
AL		 8891 /*
8892 * Most models: xxyTkkWW (#.##c)
8893 * Ancient 570/600 and -SL lacks (#.##c)
8894 */
8895 if (s && strlen(s) >= 8 &&
050df107
HMH		 8896 tpacpi_is_fw_digit(s[0]) &&
8897 tpacpi_is_fw_digit(s[1]) &&
16a3d9f5
MI		 8898 s[2] == t &&
8899 (s[3] == 'T' || s[3] == 'N') &&
050df107 8900 tpacpi_is_fw_digit(s[4]) &&
1b0eb5bc
AL		 8901 tpacpi_is_fw_digit(s[5]))
8902 return true;
8903
8904 /* New models: xxxyTkkW (#.##c); T550 and some others */
8905 return s && strlen(s) >= 8 &&
8906 tpacpi_is_fw_digit(s[0]) &&
8907 tpacpi_is_fw_digit(s[1]) &&
8908 tpacpi_is_fw_digit(s[2]) &&
8909 s[3] == t &&
8910 (s[4] == 'T' || s[4] == 'N') &&
8911 tpacpi_is_fw_digit(s[5]) &&
8912 tpacpi_is_fw_digit(s[6]);
050df107
HMH		 8913}
8914
bf20e740
HMH		 8915/* returns 0 - probe ok, or < 0 - probe error.
8916 * Probe ok doesn't mean thinkpad found.
8917 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8918static int __must_check __init get_thinkpad_model_data(
8919 struct thinkpad_id_data *tp)
1da177e4 8920{
1855256c 8921 const struct dmi_device *dev = NULL;
56b6aeb0 8922 char ec_fw_string[18];
bf20e740 8923 char const *s;
1da177e4 8924
d5a2f2f1 8925 if (!tp)
bf20e740 8926 return -EINVAL;
d5a2f2f1
HMH		 8927
8928 memset(tp, 0, sizeof(*tp));
8929
8930 if (dmi_name_in_vendors("IBM"))
8931 tp->vendor = PCI_VENDOR_ID_IBM;
8932 else if (dmi_name_in_vendors("LENOVO"))
8933 tp->vendor = PCI_VENDOR_ID_LENOVO;
8934 else
bf20e740 8935 return 0;
d5a2f2f1 8936
bf20e740
HMH		 8937 s = dmi_get_system_info(DMI_BIOS_VERSION);
8938 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
8939 if (s && !tp->bios_version_str)
8940 return -ENOMEM;
050df107
HMH		 8941
8942 /* Really ancient ThinkPad 240X will fail this, which is fine */
16a3d9f5
MI		 8943 if (!(tpacpi_is_valid_fw_id(tp->bios_version_str, 'E') ||
8944 tpacpi_is_valid_fw_id(tp->bios_version_str, 'C')))
bf20e740 8945 return 0;
050df107 8946
d5a2f2f1
HMH		 8947 tp->bios_model = tp->bios_version_str[0]
8948 | (tp->bios_version_str[1] << 8);
050df107
HMH		 8949 tp->bios_release = (tp->bios_version_str[4] << 8)
8950 | tp->bios_version_str[5];
d5a2f2f1 8951
56b6aeb0
HMH		 8952 /*
8953 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
8954 * X32 or newer, all Z series; Some models must have an
8955 * up-to-date BIOS or they will not be detected.
8956 *
8957 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8958 */
8959 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
8960 if (sscanf(dev->name,
8961 "IBM ThinkPad Embedded Controller -[%17c",
8962 ec_fw_string) == 1) {
8963 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
8964 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
d5a2f2f1
HMH		 8965
8966 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
bf20e740
HMH		 8967 if (!tp->ec_version_str)
8968 return -ENOMEM;
050df107
HMH		 8969
8970 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
8971 tp->ec_model = ec_fw_string[0]
8972 | (ec_fw_string[1] << 8);
8973 tp->ec_release = (ec_fw_string[4] << 8)
8974 | ec_fw_string[5];
8975 } else {
0978e012
JP		 8976 pr_notice("ThinkPad firmware release %s "
8977 "doesn't match the known patterns\n",
8978 ec_fw_string);
8979 pr_notice("please report this to %s\n",
8980 TPACPI_MAIL);
050df107 8981 }
d5a2f2f1 8982 break;
78f81cc4 8983 }
1da177e4 8984 }
d5a2f2f1 8985
bf20e740 8986 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
40f5c777 8987 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) {
bf20e740
HMH		 8988 tp->model_str = kstrdup(s, GFP_KERNEL);
8989 if (!tp->model_str)
8990 return -ENOMEM;
a4f46bb9
MI		 8991 } else {
8992 s = dmi_get_system_info(DMI_BIOS_VENDOR);
40f5c777 8993 if (s && !(strncasecmp(s, "Lenovo", 6))) {
a4f46bb9
MI		 8994 tp->model_str = kstrdup(s, GFP_KERNEL);
8995 if (!tp->model_str)
8996 return -ENOMEM;
8997 }
d5a2f2f1 8998 }
8c74adbc 8999
bf20e740
HMH		 9000 s = dmi_get_system_info(DMI_PRODUCT_NAME);
9001 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
9002 if (s && !tp->nummodel_str)
9003 return -ENOMEM;
9004
9005 return 0;
1da177e4
LT		 9006}
9007
5fba344c
HMH		 9008static int __init probe_for_thinkpad(void)
9009{
9010 int is_thinkpad;
9011
9012 if (acpi_disabled)
9013 return -ENODEV;
9014
e28393c0
HMH		 9015 /* It would be dangerous to run the driver in this case */
9016 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo())
9017 return -ENODEV;
9018
5fba344c
HMH		 9019 /*
9020 * Non-ancient models have better DMI tagging, but very old models
e675abaf 9021 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
5fba344c 9022 */
e675abaf
HMH		 9023 is_thinkpad = (thinkpad_id.model_str != NULL) ||
9024 (thinkpad_id.ec_model != 0) ||
9025 tpacpi_is_fw_known();
5fba344c 9026
437e470c
HMH		 9027 /* The EC handler is required */
9028 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle);
5fba344c
HMH		 9029 if (!ec_handle) {
9030 if (is_thinkpad)
0978e012 9031 pr_err("Not yet supported ThinkPad detected!\n");
5fba344c
HMH		 9032 return -ENODEV;
9033 }
9034
0dcef77c
HMH		 9035 if (!is_thinkpad && !force_load)
9036 return -ENODEV;
9037
5fba344c
HMH		 9038 return 0;
9039}
9040
7a43f788
HMH		 9041static void __init thinkpad_acpi_init_banner(void)
9042{
0978e012
JP		 9043 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
9044 pr_info("%s\n", TPACPI_URL);
7a43f788 9045
0978e012 9046 pr_info("ThinkPad BIOS %s, EC %s\n",
7a43f788
HMH		 9047 (thinkpad_id.bios_version_str) ?
9048 thinkpad_id.bios_version_str : "unknown",
9049 (thinkpad_id.ec_version_str) ?
9050 thinkpad_id.ec_version_str : "unknown");
9051
9052 BUG_ON(!thinkpad_id.vendor);
9053
9054 if (thinkpad_id.model_str)
0978e012 9055 pr_info("%s %s, model %s\n",
7a43f788
HMH		 9056 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
9057 "IBM" : ((thinkpad_id.vendor ==
9058 PCI_VENDOR_ID_LENOVO) ?
9059 "Lenovo" : "Unknown vendor"),
9060 thinkpad_id.model_str,
9061 (thinkpad_id.nummodel_str) ?
9062 thinkpad_id.nummodel_str : "unknown");
9063}
5fba344c 9064
56b6aeb0 9065/* Module init, exit, parameters */
1da177e4 9066
a5763f22
HMH		 9067static struct ibm_init_struct ibms_init[] __initdata = {
9068 {
a5763f22
HMH		 9069 .data = &thinkpad_acpi_driver_data,
9070 },
9071 {
9072 .init = hotkey_init,
9073 .data = &hotkey_driver_data,
9074 },
9075 {
9076 .init = bluetooth_init,
9077 .data = &bluetooth_driver_data,
9078 },
9079 {
9080 .init = wan_init,
9081 .data = &wan_driver_data,
9082 },
0045c0aa
HMH		 9083 {
9084 .init = uwb_init,
9085 .data = &uwb_driver_data,
9086 },
d7c1d17d 9087#ifdef CONFIG_THINKPAD_ACPI_VIDEO
a5763f22
HMH		 9088 {
9089 .init = video_init,
b525c06c 9090 .base_procfs_mode = S_IRUSR,
a5763f22
HMH		 9091 .data = &video_driver_data,
9092 },
d7c1d17d 9093#endif
a5763f22
HMH		 9094 {
9095 .init = light_init,
9096 .data = &light_driver_data,
9097 },
a5763f22
HMH		 9098 {
9099 .init = cmos_init,
9100 .data = &cmos_driver_data,
9101 },
9102 {
9103 .init = led_init,
9104 .data = &led_driver_data,
9105 },
9106 {
9107 .init = beep_init,
9108 .data = &beep_driver_data,
9109 },
9110 {
9111 .init = thermal_init,
9112 .data = &thermal_driver_data,
9113 },
a5763f22
HMH		 9114 {
9115 .init = brightness_init,
9116 .data = &brightness_driver_data,
9117 },
9118 {
329e4e18 9119 .init = volume_init,
a5763f22
HMH		 9120 .data = &volume_driver_data,
9121 },
9122 {
9123 .init = fan_init,
9124 .data = &fan_driver_data,
9125 },
420f9739
DH		 9126 {
9127 .init = mute_led_init,
9128 .data = &mute_led_driver_data,
9129 },
a5763f22
HMH		 9130};
9131
3945ac36 9132static int __init set_ibm_param(const char *val, struct kernel_param *kp)
1da177e4
LT		 9133{
9134 unsigned int i;
a5763f22 9135 struct ibm_struct *ibm;
1da177e4 9136
59f91ff1
HMH		 9137 if (!kp || !kp->name || !val)
9138 return -EINVAL;
9139
a5763f22
HMH		 9140 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
9141 ibm = ibms_init[i].data;
59f91ff1
HMH		 9142 WARN_ON(ibm == NULL);
9143
9144 if (!ibm || !ibm->name)
9145 continue;
a5763f22
HMH		 9146
9147 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
9148 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
78f81cc4 9149 return -ENOSPC;
a5763f22
HMH		 9150 strcpy(ibms_init[i].param, val);
9151 strcat(ibms_init[i].param, ",");
78f81cc4
BD		 9152 return 0;
9153 }
a5763f22 9154 }
1da177e4 9155
1da177e4
LT		 9156 return -EINVAL;
9157}
9158
b09c7225 9159module_param(experimental, int, 0444);
f68080f8 9160MODULE_PARM_DESC(experimental,
35ff8b9f 9161 "Enables experimental features when non-zero");
56b6aeb0 9162
132ce091 9163module_param_named(debug, dbg_level, uint, 0);
f68080f8 9164MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
132ce091 9165
b09c7225 9166module_param(force_load, bool, 0444);
f68080f8 9167MODULE_PARM_DESC(force_load,
35ff8b9f
HMH		 9168 "Attempts to load the driver even on a "
9169 "mis-identified ThinkPad when true");
0dcef77c 9170
b09c7225 9171module_param_named(fan_control, fan_control_allowed, bool, 0444);
f68080f8 9172MODULE_PARM_DESC(fan_control,
35ff8b9f 9173 "Enables setting fan parameters features when true");
ecf2a80a 9174
b09c7225 9175module_param_named(brightness_mode, brightness_mode, uint, 0444);
f68080f8 9176MODULE_PARM_DESC(brightness_mode,
35ff8b9f 9177 "Selects brightness control strategy: "
0e501834 9178 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
24d3b774 9179
b09c7225 9180module_param(brightness_enable, uint, 0444);
f68080f8 9181MODULE_PARM_DESC(brightness_enable,
35ff8b9f 9182 "Enables backlight control when 1, disables when 0");
87cc537a 9183
ff850c33 9184#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
329e4e18
HMH		 9185module_param_named(volume_mode, volume_mode, uint, 0444);
9186MODULE_PARM_DESC(volume_mode,
9187 "Selects volume control strategy: "
9188 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
9189
a112ceee
HMH		 9190module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
9191MODULE_PARM_DESC(volume_capabilities,
9192 "Selects the mixer capabilites: "
9193 "0=auto, 1=volume and mute, 2=mute only");
9194
c7ac6291
HMH		 9195module_param_named(volume_control, volume_control_allowed, bool, 0444);
9196MODULE_PARM_DESC(volume_control,
9197 "Enables software override for the console audio "
9198 "control when true");
9199
9a417ec0
AL		 9200module_param_named(software_mute, software_mute_requested, bool, 0444);
9201MODULE_PARM_DESC(software_mute,
9202 "Request full software mute control");
9203
0d204c34
HMH		 9204/* ALSA module API parameters */
9205module_param_named(index, alsa_index, int, 0444);
9206MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
9207module_param_named(id, alsa_id, charp, 0444);
9208MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
9209module_param_named(enable, alsa_enable, bool, 0444);
9210MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
ff850c33 9211#endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */
0d204c34 9212
e0c7dfe7 9213#define TPACPI_PARAM(feature) \
f68080f8 9214 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
cbb14842 9215 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
35ff8b9f 9216 "at module load, see documentation")
1da177e4 9217
e0c7dfe7
HMH		 9218TPACPI_PARAM(hotkey);
9219TPACPI_PARAM(bluetooth);
9220TPACPI_PARAM(video);
9221TPACPI_PARAM(light);
e0c7dfe7
HMH		 9222TPACPI_PARAM(cmos);
9223TPACPI_PARAM(led);
9224TPACPI_PARAM(beep);
e0c7dfe7
HMH		 9225TPACPI_PARAM(brightness);
9226TPACPI_PARAM(volume);
9227TPACPI_PARAM(fan);
78f81cc4 9228
a73f3091 9229#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
b09c7225 9230module_param(dbg_wlswemul, uint, 0444);
a73f3091
HMH		 9231MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
9232module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
9233MODULE_PARM_DESC(wlsw_state,
9234 "Initial state of the emulated WLSW switch");
9235
b09c7225 9236module_param(dbg_bluetoothemul, uint, 0444);
a73f3091
HMH		 9237MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
9238module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
9239MODULE_PARM_DESC(bluetooth_state,
9240 "Initial state of the emulated bluetooth switch");
9241
b09c7225 9242module_param(dbg_wwanemul, uint, 0444);
a73f3091
HMH		 9243MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
9244module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
9245MODULE_PARM_DESC(wwan_state,
9246 "Initial state of the emulated WWAN switch");
0045c0aa 9247
b09c7225 9248module_param(dbg_uwbemul, uint, 0444);
0045c0aa
HMH		 9249MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
9250module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
9251MODULE_PARM_DESC(uwb_state,
9252 "Initial state of the emulated UWB switch");
a73f3091
HMH		 9253#endif
9254
b21a15f6
HMH		 9255static void thinkpad_acpi_module_exit(void)
9256{
9257 struct ibm_struct *ibm, *itmp;
9258
9259 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
9260
9261 list_for_each_entry_safe_reverse(ibm, itmp,
9262 &tpacpi_all_drivers,
9263 all_drivers) {
9264 ibm_exit(ibm);
9265 }
9266
9267 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
9268
9269 if (tpacpi_inputdev) {
9270 if (tp_features.input_device_registered)
9271 input_unregister_device(tpacpi_inputdev);
9272 else
9273 input_free_device(tpacpi_inputdev);
00d39597 9274 kfree(hotkey_keycode_map);
b21a15f6
HMH		 9275 }
9276
9277 if (tpacpi_hwmon)
9278 hwmon_device_unregister(tpacpi_hwmon);
9279
9280 if (tp_features.sensors_pdev_attrs_registered)
9281 device_remove_file(&tpacpi_sensors_pdev->dev,
9282 &dev_attr_thinkpad_acpi_pdev_name);
9283 if (tpacpi_sensors_pdev)
9284 platform_device_unregister(tpacpi_sensors_pdev);
9285 if (tpacpi_pdev)
9286 platform_device_unregister(tpacpi_pdev);
9287
9288 if (tp_features.sensors_pdrv_attrs_registered)
9289 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
9290 if (tp_features.platform_drv_attrs_registered)
9291 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
9292
9293 if (tp_features.sensors_pdrv_registered)
9294 platform_driver_unregister(&tpacpi_hwmon_pdriver);
9295
9296 if (tp_features.platform_drv_registered)
9297 platform_driver_unregister(&tpacpi_pdriver);
9298
9299 if (proc_dir)
e0c7dfe7 9300 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
b21a15f6 9301
e0e3c061
HMH		 9302 if (tpacpi_wq)
9303 destroy_workqueue(tpacpi_wq);
9304
b21a15f6
HMH		 9305 kfree(thinkpad_id.bios_version_str);
9306 kfree(thinkpad_id.ec_version_str);
9307 kfree(thinkpad_id.model_str);
d2be15bd 9308 kfree(thinkpad_id.nummodel_str);
b21a15f6
HMH		 9309}
9310
f74a27d4 9311
1def7115 9312static int __init thinkpad_acpi_module_init(void)
1da177e4
LT		 9313{
9314 int ret, i;
9315
8fef502e
HMH		 9316 tpacpi_lifecycle = TPACPI_LIFE_INIT;
9317
54ae1501 9318 /* Driver-level probe */
d5a2f2f1 9319
bf20e740
HMH		 9320 ret = get_thinkpad_model_data(&thinkpad_id);
9321 if (ret) {
0978e012 9322 pr_err("unable to get DMI data: %d\n", ret);
bf20e740
HMH		 9323 thinkpad_acpi_module_exit();
9324 return ret;
9325 }
5fba344c 9326 ret = probe_for_thinkpad();
d5a2f2f1
HMH		 9327 if (ret) {
9328 thinkpad_acpi_module_exit();
5fba344c 9329 return ret;
d5a2f2f1 9330 }
1da177e4 9331
54ae1501 9332 /* Driver initialization */
d5a2f2f1 9333
7a43f788
HMH		 9334 thinkpad_acpi_init_banner();
9335 tpacpi_check_outdated_fw();
9336
e0c7dfe7
HMH		 9337 TPACPI_ACPIHANDLE_INIT(ecrd);
9338 TPACPI_ACPIHANDLE_INIT(ecwr);
1da177e4 9339
e0e3c061
HMH		 9340 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
9341 if (!tpacpi_wq) {
9342 thinkpad_acpi_module_exit();
9343 return -ENOMEM;
9344 }
9345
e0c7dfe7 9346 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
1da177e4 9347 if (!proc_dir) {
0978e012 9348 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n");
1def7115 9349 thinkpad_acpi_module_exit();
1da177e4
LT		 9350 return -ENODEV;
9351 }
78f81cc4 9352
54ae1501
HMH		 9353 ret = platform_driver_register(&tpacpi_pdriver);
9354 if (ret) {
0978e012 9355 pr_err("unable to register main platform driver\n");
54ae1501
HMH		 9356 thinkpad_acpi_module_exit();
9357 return ret;
9358 }
ac36393d
HMH		 9359 tp_features.platform_drv_registered = 1;
9360
7fd40029
HMH		 9361 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
9362 if (ret) {
0978e012 9363 pr_err("unable to register hwmon platform driver\n");
7fd40029
HMH		 9364 thinkpad_acpi_module_exit();
9365 return ret;
9366 }
9367 tp_features.sensors_pdrv_registered = 1;
9368
176750d6 9369 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
2369cc94
HMH		 9370 if (!ret) {
9371 tp_features.platform_drv_attrs_registered = 1;
35ff8b9f
HMH		 9372 ret = tpacpi_create_driver_attributes(
9373 &tpacpi_hwmon_pdriver.driver);
2369cc94 9374 }
176750d6 9375 if (ret) {
0978e012 9376 pr_err("unable to create sysfs driver attributes\n");
176750d6
HMH		 9377 thinkpad_acpi_module_exit();
9378 return ret;
9379 }
2369cc94 9380 tp_features.sensors_pdrv_attrs_registered = 1;
176750d6 9381
54ae1501
HMH		 9382
9383 /* Device initialization */
e0c7dfe7 9384 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
54ae1501
HMH		 9385 NULL, 0);
9386 if (IS_ERR(tpacpi_pdev)) {
9387 ret = PTR_ERR(tpacpi_pdev);
9388 tpacpi_pdev = NULL;
0978e012 9389 pr_err("unable to register platform device\n");
54ae1501
HMH		 9390 thinkpad_acpi_module_exit();
9391 return ret;
9392 }
7fd40029 9393 tpacpi_sensors_pdev = platform_device_register_simple(
35ff8b9f
HMH		 9394 TPACPI_HWMON_DRVR_NAME,
9395 -1, NULL, 0);
7fd40029
HMH		 9396 if (IS_ERR(tpacpi_sensors_pdev)) {
9397 ret = PTR_ERR(tpacpi_sensors_pdev);
9398 tpacpi_sensors_pdev = NULL;
0978e012 9399 pr_err("unable to register hwmon platform device\n");
7fd40029
HMH		 9400 thinkpad_acpi_module_exit();
9401 return ret;
9402 }
9403 ret = device_create_file(&tpacpi_sensors_pdev->dev,
9404 &dev_attr_thinkpad_acpi_pdev_name);
9405 if (ret) {
0978e012 9406 pr_err("unable to create sysfs hwmon device attributes\n");
7fd40029
HMH		 9407 thinkpad_acpi_module_exit();
9408 return ret;
9409 }
9410 tp_features.sensors_pdev_attrs_registered = 1;
9411 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
54ae1501
HMH		 9412 if (IS_ERR(tpacpi_hwmon)) {
9413 ret = PTR_ERR(tpacpi_hwmon);
9414 tpacpi_hwmon = NULL;
0978e012 9415 pr_err("unable to register hwmon device\n");
54ae1501
HMH		 9416 thinkpad_acpi_module_exit();
9417 return ret;
9418 }
8523ed6f 9419 mutex_init(&tpacpi_inputdev_send_mutex);
7f5d1cd6
HMH		 9420 tpacpi_inputdev = input_allocate_device();
9421 if (!tpacpi_inputdev) {
7f5d1cd6
HMH		 9422 thinkpad_acpi_module_exit();
9423 return -ENOMEM;
9424 } else {
9425 /* Prepare input device, but don't register */
9426 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
e0c7dfe7 9427 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7f5d1cd6 9428 tpacpi_inputdev->id.bustype = BUS_HOST;
e28393c0 9429 tpacpi_inputdev->id.vendor = thinkpad_id.vendor;
7f5d1cd6
HMH		 9430 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
9431 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
d112ef95 9432 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
7f5d1cd6 9433 }
77775838
HMH		 9434
9435 /* Init subdriver dependencies */
9436 tpacpi_detect_brightness_capabilities();
9437
9438 /* Init subdrivers */
a5763f22
HMH		 9439 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
9440 ret = ibm_init(&ibms_init[i]);
9441 if (ret >= 0 && *ibms_init[i].param)
9442 ret = ibms_init[i].data->write(ibms_init[i].param);
1da177e4 9443 if (ret < 0) {
1def7115 9444 thinkpad_acpi_module_exit();
1da177e4
LT		 9445 return ret;
9446 }
9447 }
b589ea4c
HMH		 9448
9449 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
9450
7f5d1cd6
HMH		 9451 ret = input_register_device(tpacpi_inputdev);
9452 if (ret < 0) {
0978e012 9453 pr_err("unable to register input device\n");
7f5d1cd6
HMH		 9454 thinkpad_acpi_module_exit();
9455 return ret;
9456 } else {
9457 tp_features.input_device_registered = 1;
9458 }
1da177e4
LT		 9459
9460 return 0;
9461}
9462
95e57ab2
HMH		 9463MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
9464
922fe097
HMH		 9465/*
9466 * This will autoload the driver in almost every ThinkPad
9467 * in widespread use.
9468 *
9469 * Only _VERY_ old models, like the 240, 240x and 570 lack
9470 * the HKEY event interface.
9471 */
9472MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
9473
f68080f8
HMH		 9474/*
9475 * DMI matching for module autoloading
9476 *
9477 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9478 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9479 *
9480 * Only models listed in thinkwiki will be supported, so add yours
9481 * if it is not there yet.
9482 */
9483#define IBM_BIOS_MODULE_ALIAS(__type) \
b36a50f9 9484 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
f68080f8 9485
f68080f8
HMH		 9486/* Ancient thinkpad BIOSes have to be identified by
9487 * BIOS type or model number, and there are far less
9488 * BIOS types than model numbers... */
922fe097 9489IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
f68080f8 9490
f68f53a2
HMH		 9491MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9492MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
e0c7dfe7
HMH		 9493MODULE_DESCRIPTION(TPACPI_DESC);
9494MODULE_VERSION(TPACPI_VERSION);
f68080f8
HMH		 9495MODULE_LICENSE("GPL");
9496
1def7115
HMH		 9497module_init(thinkpad_acpi_module_init);
9498module_exit(thinkpad_acpi_module_exit);
Linux kernel - Deliverables
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