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thinkpad-acpi: don't take the first ALSA slot by default
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / platform / x86 / thinkpad_acpi.c
blob551a294c58a62e8f71726ff52de8f835f52c6719
1 /*
2 * thinkpad_acpi.c - ThinkPad ACPI Extras
3 *
4 *
5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net>
6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br>
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
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
22 */
23
24 #define TPACPI_VERSION "0.23"
25 #define TPACPI_SYSFS_VERSION 0x020700
26
27 /*
28 * Changelog:
29 * 2007-10-20 changelog trimmed down
30 *
31 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to
32 * drivers/misc.
33 *
34 * 2006-11-22 0.13 new maintainer
35 * changelog now lives in git commit history, and will
36 * not be updated further in-file.
37 *
38 * 2005-03-17 0.11 support for 600e, 770x
39 * thanks to Jamie Lentin <lentinj@dial.pipex.com>
40 *
41 * 2005-01-16 0.9 use MODULE_VERSION
42 * thanks to Henrik Brix Andersen <brix@gentoo.org>
43 * fix parameter passing on module loading
44 * thanks to Rusty Russell <rusty@rustcorp.com.au>
45 * thanks to Jim Radford <radford@blackbean.org>
46 * 2004-11-08 0.8 fix init error case, don't return from a macro
47 * thanks to Chris Wright <chrisw@osdl.org>
48 */
49
50 #include <linux/kernel.h>
51 #include <linux/module.h>
52 #include <linux/init.h>
53 #include <linux/types.h>
54 #include <linux/string.h>
55 #include <linux/list.h>
56 #include <linux/mutex.h>
57 #include <linux/sched.h>
58 #include <linux/kthread.h>
59 #include <linux/freezer.h>
60 #include <linux/delay.h>
61
62 #include <linux/nvram.h>
63 #include <linux/proc_fs.h>
64 #include <linux/seq_file.h>
65 #include <linux/sysfs.h>
66 #include <linux/backlight.h>
67 #include <linux/fb.h>
68 #include <linux/platform_device.h>
69 #include <linux/hwmon.h>
70 #include <linux/hwmon-sysfs.h>
71 #include <linux/input.h>
72 #include <linux/leds.h>
73 #include <linux/rfkill.h>
74 #include <asm/uaccess.h>
75
76 #include <linux/dmi.h>
77 #include <linux/jiffies.h>
78 #include <linux/workqueue.h>
79
80 #include <sound/core.h>
81 #include <sound/control.h>
82 #include <sound/initval.h>
83
84 #include <acpi/acpi_drivers.h>
85
86 #include <linux/pci_ids.h>
87
88
89 /* ThinkPad CMOS commands */
90 #define TP_CMOS_VOLUME_DOWN 0
91 #define TP_CMOS_VOLUME_UP 1
92 #define TP_CMOS_VOLUME_MUTE 2
93 #define TP_CMOS_BRIGHTNESS_UP 4
94 #define TP_CMOS_BRIGHTNESS_DOWN 5
95 #define TP_CMOS_THINKLIGHT_ON 12
96 #define TP_CMOS_THINKLIGHT_OFF 13
97
98 /* NVRAM Addresses */
99 enum tp_nvram_addr {
100 TP_NVRAM_ADDR_HK2 = 0x57,
101 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
102 TP_NVRAM_ADDR_VIDEO = 0x59,
103 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
104 TP_NVRAM_ADDR_MIXER = 0x60,
105 };
106
107 /* NVRAM bit masks */
108 enum {
109 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
110 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
111 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
112 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
113 TP_NVRAM_MASK_THINKLIGHT = 0x10,
114 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
115 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
116 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
117 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
118 TP_NVRAM_MASK_MUTE = 0x40,
119 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
120 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
121 TP_NVRAM_POS_LEVEL_VOLUME = 0,
122 };
123
124 /* ACPI HIDs */
125 #define TPACPI_ACPI_HKEY_HID "IBM0068"
126
127 /* Input IDs */
128 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
129 #define TPACPI_HKEY_INPUT_VERSION 0x4101
130
131 /* ACPI \WGSV commands */
132 enum {
133 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
134 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
135 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
136 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
137 };
138
139 /* TP_ACPI_WGSV_GET_STATE bits */
140 enum {
141 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
142 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
143 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
144 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
145 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
146 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
147 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
148 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
149 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
150 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
151 };
152
153 /* HKEY events */
154 enum tpacpi_hkey_event_t {
155 /* Hotkey-related */
156 TP_HKEY_EV_HOTKEY_BASE = 0x1001, /* first hotkey (FN+F1) */
157 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */
158 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */
159 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */
160 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */
161 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */
162
163 /* Reasons for waking up from S3/S4 */
164 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */
165 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */
166 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */
167 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */
168 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */
169 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */
170
171 /* Auto-sleep after eject request */
172 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */
173 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */
174
175 /* Misc bay events */
176 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */
177
178 /* User-interface events */
179 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
180 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */
181 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */
182 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */
183 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */
184 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */
185 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */
186
187 /* Thermal events */
188 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */
189 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */
190 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */
191 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */
192 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* thermal table changed */
193
194 /* Misc */
195 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */
196 };
197
198 /****************************************************************************
199 * Main driver
200 */
201
202 #define TPACPI_NAME "thinkpad"
203 #define TPACPI_DESC "ThinkPad ACPI Extras"
204 #define TPACPI_FILE TPACPI_NAME "_acpi"
205 #define TPACPI_URL "http://ibm-acpi.sf.net/"
206 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
207
208 #define TPACPI_PROC_DIR "ibm"
209 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
210 #define TPACPI_DRVR_NAME TPACPI_FILE
211 #define TPACPI_DRVR_SHORTNAME "tpacpi"
212 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
213
214 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
215 #define TPACPI_WORKQUEUE_NAME "ktpacpid"
216
217 #define TPACPI_MAX_ACPI_ARGS 3
218
219 /* rfkill switches */
220 enum {
221 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
222 TPACPI_RFK_WWAN_SW_ID,
223 TPACPI_RFK_UWB_SW_ID,
224 };
225
226 /* printk headers */
227 #define TPACPI_LOG TPACPI_FILE ": "
228 #define TPACPI_EMERG KERN_EMERG TPACPI_LOG
229 #define TPACPI_ALERT KERN_ALERT TPACPI_LOG
230 #define TPACPI_CRIT KERN_CRIT TPACPI_LOG
231 #define TPACPI_ERR KERN_ERR TPACPI_LOG
232 #define TPACPI_WARN KERN_WARNING TPACPI_LOG
233 #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
234 #define TPACPI_INFO KERN_INFO TPACPI_LOG
235 #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
236
237 /* Debugging printk groups */
238 #define TPACPI_DBG_ALL 0xffff
239 #define TPACPI_DBG_DISCLOSETASK 0x8000
240 #define TPACPI_DBG_INIT 0x0001
241 #define TPACPI_DBG_EXIT 0x0002
242 #define TPACPI_DBG_RFKILL 0x0004
243 #define TPACPI_DBG_HKEY 0x0008
244 #define TPACPI_DBG_FAN 0x0010
245 #define TPACPI_DBG_BRGHT 0x0020
246 #define TPACPI_DBG_MIXER 0x0040
247
248 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
249 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
250 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
251
252
253 /****************************************************************************
254 * Driver-wide structs and misc. variables
255 */
256
257 struct ibm_struct;
258
259 struct tp_acpi_drv_struct {
260 const struct acpi_device_id *hid;
261 struct acpi_driver *driver;
262
263 void (*notify) (struct ibm_struct *, u32);
264 acpi_handle *handle;
265 u32 type;
266 struct acpi_device *device;
267 };
268
269 struct ibm_struct {
270 char *name;
271
272 int (*read) (struct seq_file *);
273 int (*write) (char *);
274 void (*exit) (void);
275 void (*resume) (void);
276 void (*suspend) (pm_message_t state);
277 void (*shutdown) (void);
278
279 struct list_head all_drivers;
280
281 struct tp_acpi_drv_struct *acpi;
282
283 struct {
284 u8 acpi_driver_registered:1;
285 u8 acpi_notify_installed:1;
286 u8 proc_created:1;
287 u8 init_called:1;
288 u8 experimental:1;
289 } flags;
290 };
291
292 struct ibm_init_struct {
293 char param[32];
294
295 int (*init) (struct ibm_init_struct *);
296 struct ibm_struct *data;
297 };
298
299 static struct {
300 u32 bluetooth:1;
301 u32 hotkey:1;
302 u32 hotkey_mask:1;
303 u32 hotkey_wlsw:1;
304 u32 hotkey_tablet:1;
305 u32 light:1;
306 u32 light_status:1;
307 u32 bright_16levels:1;
308 u32 bright_acpimode:1;
309 u32 wan:1;
310 u32 uwb:1;
311 u32 fan_ctrl_status_undef:1;
312 u32 second_fan:1;
313 u32 beep_needs_two_args:1;
314 u32 mixer_no_level_control:1;
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
324 static struct {
325 u16 hotkey_mask_ff:1;
326 u16 volume_ctrl_forbidden:1;
327 } tp_warned;
328
329 struct 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
336 u16 bios_model; /* 1Y = 0x5931, 0 = unknown */
337 u16 ec_model;
338 u16 bios_release; /* 1ZETK1WW = 0x314b, 0 = unknown */
339 u16 ec_release;
340
341 char *model_str; /* ThinkPad T43 */
342 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
343 };
344 static struct thinkpad_id_data thinkpad_id;
345
346 static enum {
347 TPACPI_LIFE_INIT = 0,
348 TPACPI_LIFE_RUNNING,
349 TPACPI_LIFE_EXITING,
350 } tpacpi_lifecycle;
351
352 static int experimental;
353 static u32 dbg_level;
354
355 static struct workqueue_struct *tpacpi_wq;
356
357 enum led_status_t {
358 TPACPI_LED_OFF = 0,
359 TPACPI_LED_ON,
360 TPACPI_LED_BLINK,
361 };
362
363 /* Special LED class that can defer work */
364 struct tpacpi_led_classdev {
365 struct led_classdev led_classdev;
366 struct work_struct work;
367 enum led_status_t new_state;
368 unsigned int led;
369 };
370
371 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
372 static int dbg_wlswemul;
373 static int tpacpi_wlsw_emulstate;
374 static int dbg_bluetoothemul;
375 static int tpacpi_bluetooth_emulstate;
376 static int dbg_wwanemul;
377 static int tpacpi_wwan_emulstate;
378 static int dbg_uwbemul;
379 static int tpacpi_uwb_emulstate;
380 #endif
381
382
383 /*************************************************************************
384 * Debugging helpers
385 */
386
387 #define dbg_printk(a_dbg_level, format, arg...) \
388 do { if (dbg_level & (a_dbg_level)) \
389 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
390 } while (0)
391
392 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
393 #define vdbg_printk dbg_printk
394 static const char *str_supported(int is_supported);
395 #else
396 #define vdbg_printk(a_dbg_level, format, arg...) \
397 do { } while (0)
398 #endif
399
400 static void tpacpi_log_usertask(const char * const what)
401 {
402 printk(TPACPI_DEBUG "%s: access by process with PID %d\n",
403 what, task_tgid_vnr(current));
404 }
405
406 #define tpacpi_disclose_usertask(what, format, arg...) \
407 do { \
408 if (unlikely( \
409 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
410 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
411 printk(TPACPI_DEBUG "%s: PID %d: " format, \
412 what, task_tgid_vnr(current), ## arg); \
413 } \
414 } while (0)
415
416 /*
417 * Quirk handling helpers
418 *
419 * ThinkPad IDs and versions seen in the field so far
420 * are two-characters from the set [0-9A-Z], i.e. base 36.
421 *
422 * We use values well outside that range as specials.
423 */
424
425 #define TPACPI_MATCH_ANY 0xffffU
426 #define TPACPI_MATCH_UNKNOWN 0U
427
428 /* TPID('1', 'Y') == 0x5931 */
429 #define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
430
431 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \
432 { .vendor = PCI_VENDOR_ID_IBM, \
433 .bios = TPID(__id1, __id2), \
434 .ec = TPACPI_MATCH_ANY, \
435 .quirks = (__quirk) }
436
437 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \
438 { .vendor = PCI_VENDOR_ID_LENOVO, \
439 .bios = TPID(__id1, __id2), \
440 .ec = TPACPI_MATCH_ANY, \
441 .quirks = (__quirk) }
442
443 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \
444 { .vendor = PCI_VENDOR_ID_LENOVO, \
445 .bios = TPACPI_MATCH_ANY, \
446 .ec = TPID(__id1, __id2), \
447 .quirks = (__quirk) }
448
449 struct tpacpi_quirk {
450 unsigned int vendor;
451 u16 bios;
452 u16 ec;
453 unsigned long quirks;
454 };
455
456 /**
457 * tpacpi_check_quirks() - search BIOS/EC version on a list
458 * @qlist: array of &struct tpacpi_quirk
459 * @qlist_size: number of elements in @qlist
460 *
461 * Iterates over a quirks list until one is found that matches the
462 * ThinkPad's vendor, BIOS and EC model.
463 *
464 * Returns 0 if nothing matches, otherwise returns the quirks field of
465 * the matching &struct tpacpi_quirk entry.
466 *
467 * The match criteria is: vendor, ec and bios much match.
468 */
469 static unsigned long __init tpacpi_check_quirks(
470 const struct tpacpi_quirk *qlist,
471 unsigned int qlist_size)
472 {
473 while (qlist_size) {
474 if ((qlist->vendor == thinkpad_id.vendor ||
475 qlist->vendor == TPACPI_MATCH_ANY) &&
476 (qlist->bios == thinkpad_id.bios_model ||
477 qlist->bios == TPACPI_MATCH_ANY) &&
478 (qlist->ec == thinkpad_id.ec_model ||
479 qlist->ec == TPACPI_MATCH_ANY))
480 return qlist->quirks;
481
482 qlist_size--;
483 qlist++;
484 }
485 return 0;
486 }
487
488
489 /****************************************************************************
490 ****************************************************************************
491 *
492 * ACPI Helpers and device model
493 *
494 ****************************************************************************
495 ****************************************************************************/
496
497 /*************************************************************************
498 * ACPI basic handles
499 */
500
501 static acpi_handle root_handle;
502
503 #define TPACPI_HANDLE(object, parent, paths...) \
504 static acpi_handle object##_handle; \
505 static acpi_handle *object##_parent = &parent##_handle; \
506 static char *object##_path; \
507 static char *object##_paths[] = { paths }
508
509 TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
510 "\\_SB.PCI.ISA.EC", /* 570 */
511 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
512 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
513 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
514 "\\_SB.PCI0.ICH3.EC0", /* R31 */
515 "\\_SB.PCI0.LPC.EC", /* all others */
516 );
517
518 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
519 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
520
521 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
522 /* T4x, X31, X40 */
523 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
524 "\\CMS", /* R40, R40e */
525 ); /* all others */
526
527 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
528 "^HKEY", /* R30, R31 */
529 "HKEY", /* all others */
530 ); /* 570 */
531
532 TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
533 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
534 "\\_SB.PCI0.VID0", /* 770e */
535 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
536 "\\_SB.PCI0.AGP.VID", /* all others */
537 ); /* R30, R31 */
538
539
540 /*************************************************************************
541 * ACPI helpers
542 */
543
544 static int acpi_evalf(acpi_handle handle,
545 void *res, char *method, char *fmt, ...)
546 {
547 char *fmt0 = fmt;
548 struct acpi_object_list params;
549 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
550 struct acpi_buffer result, *resultp;
551 union acpi_object out_obj;
552 acpi_status status;
553 va_list ap;
554 char res_type;
555 int success;
556 int quiet;
557
558 if (!*fmt) {
559 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
560 return 0;
561 }
562
563 if (*fmt == 'q') {
564 quiet = 1;
565 fmt++;
566 } else
567 quiet = 0;
568
569 res_type = *(fmt++);
570
571 params.count = 0;
572 params.pointer = &in_objs[0];
573
574 va_start(ap, fmt);
575 while (*fmt) {
576 char c = *(fmt++);
577 switch (c) {
578 case 'd': /* int */
579 in_objs[params.count].integer.value = va_arg(ap, int);
580 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
581 break;
582 /* add more types as needed */
583 default:
584 printk(TPACPI_ERR "acpi_evalf() called "
585 "with invalid format character '%c'\n", c);
586 return 0;
587 }
588 }
589 va_end(ap);
590
591 if (res_type != 'v') {
592 result.length = sizeof(out_obj);
593 result.pointer = &out_obj;
594 resultp = &result;
595 } else
596 resultp = NULL;
597
598 status = acpi_evaluate_object(handle, method, &params, resultp);
599
600 switch (res_type) {
601 case 'd': /* int */
602 if (res)
603 *(int *)res = out_obj.integer.value;
604 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
605 break;
606 case 'v': /* void */
607 success = status == AE_OK;
608 break;
609 /* add more types as needed */
610 default:
611 printk(TPACPI_ERR "acpi_evalf() called "
612 "with invalid format character '%c'\n", res_type);
613 return 0;
614 }
615
616 if (!success && !quiet)
617 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
618 method, fmt0, status);
619
620 return success;
621 }
622
623 static int acpi_ec_read(int i, u8 *p)
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
639 static 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
652 static 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
663 /*************************************************************************
664 * ACPI device model
665 */
666
667 #define TPACPI_ACPIHANDLE_INIT(object) \
668 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
669 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
670
671 static void drv_acpi_handle_init(char *name,
672 acpi_handle *handle, acpi_handle parent,
673 char **paths, int num_paths, char **path)
674 {
675 int i;
676 acpi_status status;
677
678 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
679 name);
680
681 for (i = 0; i < num_paths; i++) {
682 status = acpi_get_handle(parent, paths[i], handle);
683 if (ACPI_SUCCESS(status)) {
684 *path = paths[i];
685 dbg_printk(TPACPI_DBG_INIT,
686 "Found ACPI handle %s for %s\n",
687 *path, name);
688 return;
689 }
690 }
691
692 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
693 name);
694 *handle = NULL;
695 }
696
697 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
698 {
699 struct ibm_struct *ibm = data;
700
701 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
702 return;
703
704 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
705 return;
706
707 ibm->acpi->notify(ibm, event);
708 }
709
710 static int __init setup_acpi_notify(struct ibm_struct *ibm)
711 {
712 acpi_status status;
713 int rc;
714
715 BUG_ON(!ibm->acpi);
716
717 if (!*ibm->acpi->handle)
718 return 0;
719
720 vdbg_printk(TPACPI_DBG_INIT,
721 "setting up ACPI notify for %s\n", ibm->name);
722
723 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
724 if (rc < 0) {
725 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
726 ibm->name, rc);
727 return -ENODEV;
728 }
729
730 ibm->acpi->device->driver_data = ibm;
731 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
732 TPACPI_ACPI_EVENT_PREFIX,
733 ibm->name);
734
735 status = acpi_install_notify_handler(*ibm->acpi->handle,
736 ibm->acpi->type, dispatch_acpi_notify, ibm);
737 if (ACPI_FAILURE(status)) {
738 if (status == AE_ALREADY_EXISTS) {
739 printk(TPACPI_NOTICE
740 "another device driver is already "
741 "handling %s events\n", ibm->name);
742 } else {
743 printk(TPACPI_ERR
744 "acpi_install_notify_handler(%s) failed: %d\n",
745 ibm->name, status);
746 }
747 return -ENODEV;
748 }
749 ibm->flags.acpi_notify_installed = 1;
750 return 0;
751 }
752
753 static int __init tpacpi_device_add(struct acpi_device *device)
754 {
755 return 0;
756 }
757
758 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
759 {
760 int rc;
761
762 dbg_printk(TPACPI_DBG_INIT,
763 "registering %s as an ACPI driver\n", ibm->name);
764
765 BUG_ON(!ibm->acpi);
766
767 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
768 if (!ibm->acpi->driver) {
769 printk(TPACPI_ERR
770 "failed to allocate memory for ibm->acpi->driver\n");
771 return -ENOMEM;
772 }
773
774 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
775 ibm->acpi->driver->ids = ibm->acpi->hid;
776
777 ibm->acpi->driver->ops.add = &tpacpi_device_add;
778
779 rc = acpi_bus_register_driver(ibm->acpi->driver);
780 if (rc < 0) {
781 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
782 ibm->name, rc);
783 kfree(ibm->acpi->driver);
784 ibm->acpi->driver = NULL;
785 } else if (!rc)
786 ibm->flags.acpi_driver_registered = 1;
787
788 return rc;
789 }
790
791
792 /****************************************************************************
793 ****************************************************************************
794 *
795 * Procfs Helpers
796 *
797 ****************************************************************************
798 ****************************************************************************/
799
800 static int dispatch_proc_show(struct seq_file *m, void *v)
801 {
802 struct ibm_struct *ibm = m->private;
803
804 if (!ibm || !ibm->read)
805 return -EINVAL;
806 return ibm->read(m);
807 }
808
809 static int dispatch_proc_open(struct inode *inode, struct file *file)
810 {
811 return single_open(file, dispatch_proc_show, PDE(inode)->data);
812 }
813
814 static ssize_t dispatch_proc_write(struct file *file,
815 const char __user *userbuf,
816 size_t count, loff_t *pos)
817 {
818 struct ibm_struct *ibm = PDE(file->f_path.dentry->d_inode)->data;
819 char *kernbuf;
820 int ret;
821
822 if (!ibm || !ibm->write)
823 return -EINVAL;
824 if (count > PAGE_SIZE - 2)
825 return -EINVAL;
826
827 kernbuf = kmalloc(count + 2, GFP_KERNEL);
828 if (!kernbuf)
829 return -ENOMEM;
830
831 if (copy_from_user(kernbuf, userbuf, count)) {
832 kfree(kernbuf);
833 return -EFAULT;
834 }
835
836 kernbuf[count] = 0;
837 strcat(kernbuf, ",");
838 ret = ibm->write(kernbuf);
839 if (ret == 0)
840 ret = count;
841
842 kfree(kernbuf);
843
844 return ret;
845 }
846
847 static const struct file_operations dispatch_proc_fops = {
848 .owner = THIS_MODULE,
849 .open = dispatch_proc_open,
850 .read = seq_read,
851 .llseek = seq_lseek,
852 .release = single_release,
853 .write = dispatch_proc_write,
854 };
855
856 static char *next_cmd(char **cmds)
857 {
858 char *start = *cmds;
859 char *end;
860
861 while ((end = strchr(start, ',')) && end == start)
862 start = end + 1;
863
864 if (!end)
865 return NULL;
866
867 *end = 0;
868 *cmds = end + 1;
869 return start;
870 }
871
872
873 /****************************************************************************
874 ****************************************************************************
875 *
876 * Device model: input, hwmon and platform
877 *
878 ****************************************************************************
879 ****************************************************************************/
880
881 static struct platform_device *tpacpi_pdev;
882 static struct platform_device *tpacpi_sensors_pdev;
883 static struct device *tpacpi_hwmon;
884 static struct input_dev *tpacpi_inputdev;
885 static struct mutex tpacpi_inputdev_send_mutex;
886 static LIST_HEAD(tpacpi_all_drivers);
887
888 static int tpacpi_suspend_handler(struct platform_device *pdev,
889 pm_message_t state)
890 {
891 struct ibm_struct *ibm, *itmp;
892
893 list_for_each_entry_safe(ibm, itmp,
894 &tpacpi_all_drivers,
895 all_drivers) {
896 if (ibm->suspend)
897 (ibm->suspend)(state);
898 }
899
900 return 0;
901 }
902
903 static int tpacpi_resume_handler(struct platform_device *pdev)
904 {
905 struct ibm_struct *ibm, *itmp;
906
907 list_for_each_entry_safe(ibm, itmp,
908 &tpacpi_all_drivers,
909 all_drivers) {
910 if (ibm->resume)
911 (ibm->resume)();
912 }
913
914 return 0;
915 }
916
917 static void tpacpi_shutdown_handler(struct platform_device *pdev)
918 {
919 struct ibm_struct *ibm, *itmp;
920
921 list_for_each_entry_safe(ibm, itmp,
922 &tpacpi_all_drivers,
923 all_drivers) {
924 if (ibm->shutdown)
925 (ibm->shutdown)();
926 }
927 }
928
929 static struct platform_driver tpacpi_pdriver = {
930 .driver = {
931 .name = TPACPI_DRVR_NAME,
932 .owner = THIS_MODULE,
933 },
934 .suspend = tpacpi_suspend_handler,
935 .resume = tpacpi_resume_handler,
936 .shutdown = tpacpi_shutdown_handler,
937 };
938
939 static struct platform_driver tpacpi_hwmon_pdriver = {
940 .driver = {
941 .name = TPACPI_HWMON_DRVR_NAME,
942 .owner = THIS_MODULE,
943 },
944 };
945
946 /*************************************************************************
947 * sysfs support helpers
948 */
949
950 struct attribute_set {
951 unsigned int members, max_members;
952 struct attribute_group group;
953 };
954
955 struct attribute_set_obj {
956 struct attribute_set s;
957 struct attribute *a;
958 } __attribute__((packed));
959
960 static struct attribute_set *create_attr_set(unsigned int max_members,
961 const char *name)
962 {
963 struct attribute_set_obj *sobj;
964
965 if (max_members == 0)
966 return NULL;
967
968 /* Allocates space for implicit NULL at the end too */
969 sobj = kzalloc(sizeof(struct attribute_set_obj) +
970 max_members * sizeof(struct attribute *),
971 GFP_KERNEL);
972 if (!sobj)
973 return NULL;
974 sobj->s.max_members = max_members;
975 sobj->s.group.attrs = &sobj->a;
976 sobj->s.group.name = name;
977
978 return &sobj->s;
979 }
980
981 #define destroy_attr_set(_set) \
982 kfree(_set);
983
984 /* not multi-threaded safe, use it in a single thread per set */
985 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
986 {
987 if (!s || !attr)
988 return -EINVAL;
989
990 if (s->members >= s->max_members)
991 return -ENOMEM;
992
993 s->group.attrs[s->members] = attr;
994 s->members++;
995
996 return 0;
997 }
998
999 static int add_many_to_attr_set(struct attribute_set *s,
1000 struct attribute **attr,
1001 unsigned int count)
1002 {
1003 int i, res;
1004
1005 for (i = 0; i < count; i++) {
1006 res = add_to_attr_set(s, attr[i]);
1007 if (res)
1008 return res;
1009 }
1010
1011 return 0;
1012 }
1013
1014 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
1015 {
1016 sysfs_remove_group(kobj, &s->group);
1017 destroy_attr_set(s);
1018 }
1019
1020 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
1021 sysfs_create_group(_kobj, &_attr_set->group)
1022
1023 static int parse_strtoul(const char *buf,
1024 unsigned long max, unsigned long *value)
1025 {
1026 char *endp;
1027
1028 while (*buf && isspace(*buf))
1029 buf++;
1030 *value = simple_strtoul(buf, &endp, 0);
1031 while (*endp && isspace(*endp))
1032 endp++;
1033 if (*endp || *value > max)
1034 return -EINVAL;
1035
1036 return 0;
1037 }
1038
1039 static void tpacpi_disable_brightness_delay(void)
1040 {
1041 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
1042 printk(TPACPI_NOTICE
1043 "ACPI backlight control delay disabled\n");
1044 }
1045
1046 static int __init tpacpi_query_bcl_levels(acpi_handle handle)
1047 {
1048 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
1049 union acpi_object *obj;
1050 int rc;
1051
1052 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
1053 obj = (union acpi_object *)buffer.pointer;
1054 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
1055 printk(TPACPI_ERR "Unknown _BCL data, "
1056 "please report this to %s\n", TPACPI_MAIL);
1057 rc = 0;
1058 } else {
1059 rc = obj->package.count;
1060 }
1061 } else {
1062 return 0;
1063 }
1064
1065 kfree(buffer.pointer);
1066 return rc;
1067 }
1068
1069 static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
1070 u32 lvl, void *context, void **rv)
1071 {
1072 char name[ACPI_PATH_SEGMENT_LENGTH];
1073 struct acpi_buffer buffer = { sizeof(name), &name };
1074
1075 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
1076 !strncmp("_BCL", name, sizeof(name) - 1)) {
1077 BUG_ON(!rv || !*rv);
1078 **(int **)rv = tpacpi_query_bcl_levels(handle);
1079 return AE_CTRL_TERMINATE;
1080 } else {
1081 return AE_OK;
1082 }
1083 }
1084
1085 /*
1086 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
1087 */
1088 static int __init tpacpi_check_std_acpi_brightness_support(void)
1089 {
1090 int status;
1091 int bcl_levels = 0;
1092 void *bcl_ptr = &bcl_levels;
1093
1094 if (!vid_handle) {
1095 TPACPI_ACPIHANDLE_INIT(vid);
1096 }
1097 if (!vid_handle)
1098 return 0;
1099
1100 /*
1101 * Search for a _BCL method, and execute it. This is safe on all
1102 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
1103 * BIOS in ACPI backlight control mode. We do NOT have to care
1104 * about calling the _BCL method in an enabled video device, any
1105 * will do for our purposes.
1106 */
1107
1108 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
1109 tpacpi_acpi_walk_find_bcl, NULL,
1110 &bcl_ptr);
1111
1112 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
1113 tp_features.bright_acpimode = 1;
1114 return (bcl_levels - 2);
1115 }
1116
1117 return 0;
1118 }
1119
1120 static int __init tpacpi_new_rfkill(const unsigned int id,
1121 struct rfkill **rfk,
1122 const enum rfkill_type rfktype,
1123 const char *name,
1124 const bool set_default,
1125 int (*toggle_radio)(void *, enum rfkill_state),
1126 int (*get_state)(void *, enum rfkill_state *))
1127 {
1128 int res;
1129 enum rfkill_state initial_state = RFKILL_STATE_SOFT_BLOCKED;
1130
1131 res = get_state(NULL, &initial_state);
1132 if (res < 0) {
1133 printk(TPACPI_ERR
1134 "failed to read initial state for %s, error %d; "
1135 "will turn radio off\n", name, res);
1136 } else if (set_default) {
1137 /* try to set the initial state as the default for the rfkill
1138 * type, since we ask the firmware to preserve it across S5 in
1139 * NVRAM */
1140 if (rfkill_set_default(rfktype,
1141 (initial_state == RFKILL_STATE_UNBLOCKED) ?
1142 RFKILL_STATE_UNBLOCKED :
1143 RFKILL_STATE_SOFT_BLOCKED) == -EPERM)
1144 vdbg_printk(TPACPI_DBG_RFKILL,
1145 "Default state for %s cannot be changed\n",
1146 name);
1147 }
1148
1149 *rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype);
1150 if (!*rfk) {
1151 printk(TPACPI_ERR
1152 "failed to allocate memory for rfkill class\n");
1153 return -ENOMEM;
1154 }
1155
1156 (*rfk)->name = name;
1157 (*rfk)->get_state = get_state;
1158 (*rfk)->toggle_radio = toggle_radio;
1159 (*rfk)->state = initial_state;
1160
1161 res = rfkill_register(*rfk);
1162 if (res < 0) {
1163 printk(TPACPI_ERR
1164 "failed to register %s rfkill switch: %d\n",
1165 name, res);
1166 rfkill_free(*rfk);
1167 *rfk = NULL;
1168 return res;
1169 }
1170
1171 printk(TPACPI_INFO "rfkill switch %s: radio is %sblocked\n",
1172 name, (initial_state == RFKILL_STATE_UNBLOCKED) ?
1173 "un" : (initial_state == RFKILL_STATE_SOFT_BLOCKED) ?
1174 "soft-" : "hard-");
1175 return 0;
1176 }
1177
1178 static void printk_deprecated_attribute(const char * const what,
1179 const char * const details)
1180 {
1181 tpacpi_log_usertask("deprecated sysfs attribute");
1182 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
1183 "will be removed. %s\n",
1184 what, details);
1185 }
1186
1187 static void printk_deprecated_rfkill_attribute(const char * const what)
1188 {
1189 printk_deprecated_attribute(what,
1190 "Please switch to generic rfkill before year 2010");
1191 }
1192
1193 /*************************************************************************
1194 * thinkpad-acpi driver attributes
1195 */
1196
1197 /* interface_version --------------------------------------------------- */
1198 static ssize_t tpacpi_driver_interface_version_show(
1199 struct device_driver *drv,
1200 char *buf)
1201 {
1202 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1203 }
1204
1205 static DRIVER_ATTR(interface_version, S_IRUGO,
1206 tpacpi_driver_interface_version_show, NULL);
1207
1208 /* debug_level --------------------------------------------------------- */
1209 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1210 char *buf)
1211 {
1212 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1213 }
1214
1215 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1216 const char *buf, size_t count)
1217 {
1218 unsigned long t;
1219
1220 if (parse_strtoul(buf, 0xffff, &t))
1221 return -EINVAL;
1222
1223 dbg_level = t;
1224
1225 return count;
1226 }
1227
1228 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1229 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1230
1231 /* version ------------------------------------------------------------- */
1232 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1233 char *buf)
1234 {
1235 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1236 TPACPI_DESC, TPACPI_VERSION);
1237 }
1238
1239 static DRIVER_ATTR(version, S_IRUGO,
1240 tpacpi_driver_version_show, NULL);
1241
1242 /* --------------------------------------------------------------------- */
1243
1244 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1245
1246 static void tpacpi_send_radiosw_update(void);
1247
1248 /* wlsw_emulstate ------------------------------------------------------ */
1249 static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1250 char *buf)
1251 {
1252 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1253 }
1254
1255 static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1256 const char *buf, size_t count)
1257 {
1258 unsigned long t;
1259
1260 if (parse_strtoul(buf, 1, &t))
1261 return -EINVAL;
1262
1263 if (tpacpi_wlsw_emulstate != t) {
1264 tpacpi_wlsw_emulstate = !!t;
1265 tpacpi_send_radiosw_update();
1266 } else
1267 tpacpi_wlsw_emulstate = !!t;
1268
1269 return count;
1270 }
1271
1272 static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1273 tpacpi_driver_wlsw_emulstate_show,
1274 tpacpi_driver_wlsw_emulstate_store);
1275
1276 /* bluetooth_emulstate ------------------------------------------------- */
1277 static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1278 struct device_driver *drv,
1279 char *buf)
1280 {
1281 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1282 }
1283
1284 static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1285 struct device_driver *drv,
1286 const char *buf, size_t count)
1287 {
1288 unsigned long t;
1289
1290 if (parse_strtoul(buf, 1, &t))
1291 return -EINVAL;
1292
1293 tpacpi_bluetooth_emulstate = !!t;
1294
1295 return count;
1296 }
1297
1298 static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1299 tpacpi_driver_bluetooth_emulstate_show,
1300 tpacpi_driver_bluetooth_emulstate_store);
1301
1302 /* wwan_emulstate ------------------------------------------------- */
1303 static ssize_t tpacpi_driver_wwan_emulstate_show(
1304 struct device_driver *drv,
1305 char *buf)
1306 {
1307 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1308 }
1309
1310 static ssize_t tpacpi_driver_wwan_emulstate_store(
1311 struct device_driver *drv,
1312 const char *buf, size_t count)
1313 {
1314 unsigned long t;
1315
1316 if (parse_strtoul(buf, 1, &t))
1317 return -EINVAL;
1318
1319 tpacpi_wwan_emulstate = !!t;
1320
1321 return count;
1322 }
1323
1324 static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1325 tpacpi_driver_wwan_emulstate_show,
1326 tpacpi_driver_wwan_emulstate_store);
1327
1328 /* uwb_emulstate ------------------------------------------------- */
1329 static ssize_t tpacpi_driver_uwb_emulstate_show(
1330 struct device_driver *drv,
1331 char *buf)
1332 {
1333 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1334 }
1335
1336 static ssize_t tpacpi_driver_uwb_emulstate_store(
1337 struct device_driver *drv,
1338 const char *buf, size_t count)
1339 {
1340 unsigned long t;
1341
1342 if (parse_strtoul(buf, 1, &t))
1343 return -EINVAL;
1344
1345 tpacpi_uwb_emulstate = !!t;
1346
1347 return count;
1348 }
1349
1350 static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1351 tpacpi_driver_uwb_emulstate_show,
1352 tpacpi_driver_uwb_emulstate_store);
1353 #endif
1354
1355 /* --------------------------------------------------------------------- */
1356
1357 static struct driver_attribute *tpacpi_driver_attributes[] = {
1358 &driver_attr_debug_level, &driver_attr_version,
1359 &driver_attr_interface_version,
1360 };
1361
1362 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1363 {
1364 int i, res;
1365
1366 i = 0;
1367 res = 0;
1368 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1369 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1370 i++;
1371 }
1372
1373 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1374 if (!res && dbg_wlswemul)
1375 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1376 if (!res && dbg_bluetoothemul)
1377 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1378 if (!res && dbg_wwanemul)
1379 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
1380 if (!res && dbg_uwbemul)
1381 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
1382 #endif
1383
1384 return res;
1385 }
1386
1387 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1388 {
1389 int i;
1390
1391 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
1392 driver_remove_file(drv, tpacpi_driver_attributes[i]);
1393
1394 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1395 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1396 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1397 driver_remove_file(drv, &driver_attr_wwan_emulstate);
1398 driver_remove_file(drv, &driver_attr_uwb_emulstate);
1399 #endif
1400 }
1401
1402 /*************************************************************************
1403 * Firmware Data
1404 */
1405
1406 /*
1407 * Table of recommended minimum BIOS versions
1408 *
1409 * Reasons for listing:
1410 * 1. Stable BIOS, listed because the unknown ammount of
1411 * bugs and bad ACPI behaviour on older versions
1412 *
1413 * 2. BIOS or EC fw with known bugs that trigger on Linux
1414 *
1415 * 3. BIOS with known reduced functionality in older versions
1416 *
1417 * We recommend the latest BIOS and EC version.
1418 * We only support the latest BIOS and EC fw version as a rule.
1419 *
1420 * Sources: IBM ThinkPad Public Web Documents (update changelogs),
1421 * Information from users in ThinkWiki
1422 *
1423 * WARNING: we use this table also to detect that the machine is
1424 * a ThinkPad in some cases, so don't remove entries lightly.
1425 */
1426
1427 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \
1428 { .vendor = (__v), \
1429 .bios = TPID(__id1, __id2), \
1430 .ec = TPACPI_MATCH_ANY, \
1431 .quirks = TPACPI_MATCH_ANY << 16 \
1432 | (__bv1) << 8 | (__bv2) }
1433
1434 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \
1435 __eid, __ev1, __ev2) \
1436 { .vendor = (__v), \
1437 .bios = TPID(__bid1, __bid2), \
1438 .ec = __eid, \
1439 .quirks = (__ev1) << 24 | (__ev2) << 16 \
1440 | (__bv1) << 8 | (__bv2) }
1441
1442 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \
1443 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2)
1444
1445 /* Outdated IBM BIOSes often lack the EC id string */
1446 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1447 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1448 __bv1, __bv2, TPID(__id1, __id2), \
1449 __ev1, __ev2), \
1450 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \
1451 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1452 __ev1, __ev2)
1453
1454 /* Outdated IBM BIOSes often lack the EC id string */
1455 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \
1456 __eid1, __eid2, __ev1, __ev2) \
1457 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1458 __bv1, __bv2, TPID(__eid1, __eid2), \
1459 __ev1, __ev2), \
1460 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \
1461 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \
1462 __ev1, __ev2)
1463
1464 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \
1465 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2)
1466
1467 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \
1468 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \
1469 __bv1, __bv2, TPID(__id1, __id2), \
1470 __ev1, __ev2)
1471
1472 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \
1473 __eid1, __eid2, __ev1, __ev2) \
1474 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \
1475 __bv1, __bv2, TPID(__eid1, __eid2), \
1476 __ev1, __ev2)
1477
1478 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = {
1479 /* Numeric models ------------------ */
1480 /* FW MODEL BIOS VERS */
1481 TPV_QI0('I', 'M', '6', '5'), /* 570 */
1482 TPV_QI0('I', 'U', '2', '6'), /* 570E */
1483 TPV_QI0('I', 'B', '5', '4'), /* 600 */
1484 TPV_QI0('I', 'H', '4', '7'), /* 600E */
1485 TPV_QI0('I', 'N', '3', '6'), /* 600E */
1486 TPV_QI0('I', 'T', '5', '5'), /* 600X */
1487 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */
1488 TPV_QI0('I', 'I', '4', '2'), /* 770X */
1489 TPV_QI0('I', 'O', '2', '3'), /* 770Z */
1490
1491 /* A-series ------------------------- */
1492 /* FW MODEL BIOS VERS EC VERS */
1493 TPV_QI0('I', 'W', '5', '9'), /* A20m */
1494 TPV_QI0('I', 'V', '6', '9'), /* A20p */
1495 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */
1496 TPV_QI0('K', 'U', '3', '6'), /* A21e */
1497 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */
1498 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */
1499 TPV_QI0('1', 'B', '1', '7'), /* A22e */
1500 TPV_QI0('1', '3', '2', '0'), /* A22m */
1501 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */
1502 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */
1503 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */
1504
1505 /* G-series ------------------------- */
1506 /* FW MODEL BIOS VERS */
1507 TPV_QI0('1', 'T', 'A', '6'), /* G40 */
1508 TPV_QI0('1', 'X', '5', '7'), /* G41 */
1509
1510 /* R-series, T-series --------------- */
1511 /* FW MODEL BIOS VERS EC VERS */
1512 TPV_QI0('1', 'C', 'F', '0'), /* R30 */
1513 TPV_QI0('1', 'F', 'F', '1'), /* R31 */
1514 TPV_QI0('1', 'M', '9', '7'), /* R32 */
1515 TPV_QI0('1', 'O', '6', '1'), /* R40 */
1516 TPV_QI0('1', 'P', '6', '5'), /* R40 */
1517 TPV_QI0('1', 'S', '7', '0'), /* R40e */
1518 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51,
1519 T40/p, T41/p, T42/p (1) */
1520 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */
1521 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */
1522 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */
1523 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */
1524
1525 TPV_QI0('I', 'Y', '6', '1'), /* T20 */
1526 TPV_QI0('K', 'Z', '3', '4'), /* T21 */
1527 TPV_QI0('1', '6', '3', '2'), /* T22 */
1528 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */
1529 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */
1530 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */
1531
1532 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */
1533 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */
1534 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */
1535
1536 /* BIOS FW BIOS VERS EC FW EC VERS */
1537 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */
1538 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */
1539
1540 /* X-series ------------------------- */
1541 /* FW MODEL BIOS VERS EC VERS */
1542 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */
1543 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */
1544 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */
1545 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */
1546 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */
1547 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */
1548 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */
1549
1550 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */
1551 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */
1552
1553 /* (0) - older versions lack DMI EC fw string and functionality */
1554 /* (1) - older versions known to lack functionality */
1555 };
1556
1557 #undef TPV_QL1
1558 #undef TPV_QL0
1559 #undef TPV_QI2
1560 #undef TPV_QI1
1561 #undef TPV_QI0
1562 #undef TPV_Q_X
1563 #undef TPV_Q
1564
1565 static void __init tpacpi_check_outdated_fw(void)
1566 {
1567 unsigned long fwvers;
1568 u16 ec_version, bios_version;
1569
1570 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable,
1571 ARRAY_SIZE(tpacpi_bios_version_qtable));
1572
1573 if (!fwvers)
1574 return;
1575
1576 bios_version = fwvers & 0xffffU;
1577 ec_version = (fwvers >> 16) & 0xffffU;
1578
1579 /* note that unknown versions are set to 0x0000 and we use that */
1580 if ((bios_version > thinkpad_id.bios_release) ||
1581 (ec_version > thinkpad_id.ec_release &&
1582 ec_version != TPACPI_MATCH_ANY)) {
1583 /*
1584 * The changelogs would let us track down the exact
1585 * reason, but it is just too much of a pain to track
1586 * it. We only list BIOSes that are either really
1587 * broken, or really stable to begin with, so it is
1588 * best if the user upgrades the firmware anyway.
1589 */
1590 printk(TPACPI_WARN
1591 "WARNING: Outdated ThinkPad BIOS/EC firmware\n");
1592 printk(TPACPI_WARN
1593 "WARNING: This firmware may be missing critical bug "
1594 "fixes and/or important features\n");
1595 }
1596 }
1597
1598 static bool __init tpacpi_is_fw_known(void)
1599 {
1600 return tpacpi_check_quirks(tpacpi_bios_version_qtable,
1601 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0;
1602 }
1603
1604 /****************************************************************************
1605 ****************************************************************************
1606 *
1607 * Subdrivers
1608 *
1609 ****************************************************************************
1610 ****************************************************************************/
1611
1612 /*************************************************************************
1613 * thinkpad-acpi init subdriver
1614 */
1615
1616 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1617 {
1618 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1619 printk(TPACPI_INFO "%s\n", TPACPI_URL);
1620
1621 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
1622 (thinkpad_id.bios_version_str) ?
1623 thinkpad_id.bios_version_str : "unknown",
1624 (thinkpad_id.ec_version_str) ?
1625 thinkpad_id.ec_version_str : "unknown");
1626
1627 if (thinkpad_id.vendor && thinkpad_id.model_str)
1628 printk(TPACPI_INFO "%s %s, model %s\n",
1629 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1630 "IBM" : ((thinkpad_id.vendor ==
1631 PCI_VENDOR_ID_LENOVO) ?
1632 "Lenovo" : "Unknown vendor"),
1633 thinkpad_id.model_str,
1634 (thinkpad_id.nummodel_str) ?
1635 thinkpad_id.nummodel_str : "unknown");
1636
1637 tpacpi_check_outdated_fw();
1638 return 0;
1639 }
1640
1641 static int thinkpad_acpi_driver_read(struct seq_file *m)
1642 {
1643 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC);
1644 seq_printf(m, "version:\t%s\n", TPACPI_VERSION);
1645 return 0;
1646 }
1647
1648 static struct ibm_struct thinkpad_acpi_driver_data = {
1649 .name = "driver",
1650 .read = thinkpad_acpi_driver_read,
1651 };
1652
1653 /*************************************************************************
1654 * Hotkey subdriver
1655 */
1656
1657 /*
1658 * ThinkPad firmware event model
1659 *
1660 * The ThinkPad firmware has two main event interfaces: normal ACPI
1661 * notifications (which follow the ACPI standard), and a private event
1662 * interface.
1663 *
1664 * The private event interface also issues events for the hotkeys. As
1665 * the driver gained features, the event handling code ended up being
1666 * built around the hotkey subdriver. This will need to be refactored
1667 * to a more formal event API eventually.
1668 *
1669 * Some "hotkeys" are actually supposed to be used as event reports,
1670 * such as "brightness has changed", "volume has changed", depending on
1671 * the ThinkPad model and how the firmware is operating.
1672 *
1673 * Unlike other classes, hotkey-class events have mask/unmask control on
1674 * non-ancient firmware. However, how it behaves changes a lot with the
1675 * firmware model and version.
1676 */
1677
1678 enum { /* hot key scan codes (derived from ACPI DSDT) */
1679 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1680 TP_ACPI_HOTKEYSCAN_FNF2,
1681 TP_ACPI_HOTKEYSCAN_FNF3,
1682 TP_ACPI_HOTKEYSCAN_FNF4,
1683 TP_ACPI_HOTKEYSCAN_FNF5,
1684 TP_ACPI_HOTKEYSCAN_FNF6,
1685 TP_ACPI_HOTKEYSCAN_FNF7,
1686 TP_ACPI_HOTKEYSCAN_FNF8,
1687 TP_ACPI_HOTKEYSCAN_FNF9,
1688 TP_ACPI_HOTKEYSCAN_FNF10,
1689 TP_ACPI_HOTKEYSCAN_FNF11,
1690 TP_ACPI_HOTKEYSCAN_FNF12,
1691 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1692 TP_ACPI_HOTKEYSCAN_FNINSERT,
1693 TP_ACPI_HOTKEYSCAN_FNDELETE,
1694 TP_ACPI_HOTKEYSCAN_FNHOME,
1695 TP_ACPI_HOTKEYSCAN_FNEND,
1696 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1697 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1698 TP_ACPI_HOTKEYSCAN_FNSPACE,
1699 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1700 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1701 TP_ACPI_HOTKEYSCAN_MUTE,
1702 TP_ACPI_HOTKEYSCAN_THINKPAD,
1703 };
1704
1705 enum { /* Keys/events available through NVRAM polling */
1706 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1707 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1708 };
1709
1710 enum { /* Positions of some of the keys in hotkey masks */
1711 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1712 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1713 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1714 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1715 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1716 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1717 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1718 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1719 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1720 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1721 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1722 };
1723
1724 enum { /* NVRAM to ACPI HKEY group map */
1725 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1726 TP_ACPI_HKEY_ZOOM_MASK |
1727 TP_ACPI_HKEY_DISPSWTCH_MASK |
1728 TP_ACPI_HKEY_HIBERNATE_MASK,
1729 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1730 TP_ACPI_HKEY_BRGHTDWN_MASK,
1731 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1732 TP_ACPI_HKEY_VOLDWN_MASK |
1733 TP_ACPI_HKEY_MUTE_MASK,
1734 };
1735
1736 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1737 struct tp_nvram_state {
1738 u16 thinkpad_toggle:1;
1739 u16 zoom_toggle:1;
1740 u16 display_toggle:1;
1741 u16 thinklight_toggle:1;
1742 u16 hibernate_toggle:1;
1743 u16 displayexp_toggle:1;
1744 u16 display_state:1;
1745 u16 brightness_toggle:1;
1746 u16 volume_toggle:1;
1747 u16 mute:1;
1748
1749 u8 brightness_level;
1750 u8 volume_level;
1751 };
1752
1753 /* kthread for the hotkey poller */
1754 static struct task_struct *tpacpi_hotkey_task;
1755
1756 /* Acquired while the poller kthread is running, use to sync start/stop */
1757 static struct mutex hotkey_thread_mutex;
1758
1759 /*
1760 * Acquire mutex to write poller control variables as an
1761 * atomic block.
1762 *
1763 * Increment hotkey_config_change when changing them if you
1764 * want the kthread to forget old state.
1765 *
1766 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1767 */
1768 static struct mutex hotkey_thread_data_mutex;
1769 static unsigned int hotkey_config_change;
1770
1771 /*
1772 * hotkey poller control variables
1773 *
1774 * Must be atomic or readers will also need to acquire mutex
1775 *
1776 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END
1777 * should be used only when the changes need to be taken as
1778 * a block, OR when one needs to force the kthread to forget
1779 * old state.
1780 */
1781 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1782 static unsigned int hotkey_poll_freq = 10; /* Hz */
1783
1784 #define HOTKEY_CONFIG_CRITICAL_START \
1785 do { \
1786 mutex_lock(&hotkey_thread_data_mutex); \
1787 hotkey_config_change++; \
1788 } while (0);
1789 #define HOTKEY_CONFIG_CRITICAL_END \
1790 mutex_unlock(&hotkey_thread_data_mutex);
1791
1792 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1793
1794 #define hotkey_source_mask 0U
1795 #define HOTKEY_CONFIG_CRITICAL_START
1796 #define HOTKEY_CONFIG_CRITICAL_END
1797
1798 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1799
1800 static struct mutex hotkey_mutex;
1801
1802 static enum { /* Reasons for waking up */
1803 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1804 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1805 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1806 } hotkey_wakeup_reason;
1807
1808 static int hotkey_autosleep_ack;
1809
1810 static u32 hotkey_orig_mask; /* events the BIOS had enabled */
1811 static u32 hotkey_all_mask; /* all events supported in fw */
1812 static u32 hotkey_reserved_mask; /* events better left disabled */
1813 static u32 hotkey_driver_mask; /* events needed by the driver */
1814 static u32 hotkey_user_mask; /* events visible to userspace */
1815 static u32 hotkey_acpi_mask; /* events enabled in firmware */
1816
1817 static unsigned int hotkey_report_mode;
1818
1819 static u16 *hotkey_keycode_map;
1820
1821 static struct attribute_set *hotkey_dev_attributes;
1822
1823 static void tpacpi_driver_event(const unsigned int hkey_event);
1824 static void hotkey_driver_event(const unsigned int scancode);
1825
1826 /* HKEY.MHKG() return bits */
1827 #define TP_HOTKEY_TABLET_MASK (1 << 3)
1828
1829 static int hotkey_get_wlsw(int *status)
1830 {
1831 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1832 if (dbg_wlswemul) {
1833 *status = !!tpacpi_wlsw_emulstate;
1834 return 0;
1835 }
1836 #endif
1837 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1838 return -EIO;
1839 return 0;
1840 }
1841
1842 static int hotkey_get_tablet_mode(int *status)
1843 {
1844 int s;
1845
1846 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
1847 return -EIO;
1848
1849 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
1850 return 0;
1851 }
1852
1853 /*
1854 * Reads current event mask from firmware, and updates
1855 * hotkey_acpi_mask accordingly. Also resets any bits
1856 * from hotkey_user_mask that are unavailable to be
1857 * delivered (shadow requirement of the userspace ABI).
1858 *
1859 * Call with hotkey_mutex held
1860 */
1861 static int hotkey_mask_get(void)
1862 {
1863 if (tp_features.hotkey_mask) {
1864 u32 m = 0;
1865
1866 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
1867 return -EIO;
1868
1869 hotkey_acpi_mask = m;
1870 } else {
1871 /* no mask support doesn't mean no event support... */
1872 hotkey_acpi_mask = hotkey_all_mask;
1873 }
1874
1875 /* sync userspace-visible mask */
1876 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask);
1877
1878 return 0;
1879 }
1880
1881 void static hotkey_mask_warn_incomplete_mask(void)
1882 {
1883 /* log only what the user can fix... */
1884 const u32 wantedmask = hotkey_driver_mask &
1885 ~(hotkey_acpi_mask | hotkey_source_mask) &
1886 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK);
1887
1888 if (wantedmask)
1889 printk(TPACPI_NOTICE
1890 "required events 0x%08x not enabled!\n",
1891 wantedmask);
1892 }
1893
1894 /*
1895 * Set the firmware mask when supported
1896 *
1897 * Also calls hotkey_mask_get to update hotkey_acpi_mask.
1898 *
1899 * NOTE: does not set bits in hotkey_user_mask, but may reset them.
1900 *
1901 * Call with hotkey_mutex held
1902 */
1903 static int hotkey_mask_set(u32 mask)
1904 {
1905 int i;
1906 int rc = 0;
1907
1908 const u32 fwmask = mask & ~hotkey_source_mask;
1909
1910 if (tp_features.hotkey_mask) {
1911 for (i = 0; i < 32; i++) {
1912 if (!acpi_evalf(hkey_handle,
1913 NULL, "MHKM", "vdd", i + 1,
1914 !!(mask & (1 << i)))) {
1915 rc = -EIO;
1916 break;
1917 }
1918 }
1919 }
1920
1921 /*
1922 * We *must* make an inconditional call to hotkey_mask_get to
1923 * refresh hotkey_acpi_mask and update hotkey_user_mask
1924 *
1925 * Take the opportunity to also log when we cannot _enable_
1926 * a given event.
1927 */
1928 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) {
1929 printk(TPACPI_NOTICE
1930 "asked for hotkey mask 0x%08x, but "
1931 "firmware forced it to 0x%08x\n",
1932 fwmask, hotkey_acpi_mask);
1933 }
1934
1935 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING)
1936 hotkey_mask_warn_incomplete_mask();
1937
1938 return rc;
1939 }
1940
1941 /*
1942 * Sets hotkey_user_mask and tries to set the firmware mask
1943 *
1944 * Call with hotkey_mutex held
1945 */
1946 static int hotkey_user_mask_set(const u32 mask)
1947 {
1948 int rc;
1949
1950 /* Give people a chance to notice they are doing something that
1951 * is bound to go boom on their users sooner or later */
1952 if (!tp_warned.hotkey_mask_ff &&
1953 (mask == 0xffff || mask == 0xffffff ||
1954 mask == 0xffffffff)) {
1955 tp_warned.hotkey_mask_ff = 1;
1956 printk(TPACPI_NOTICE
1957 "setting the hotkey mask to 0x%08x is likely "
1958 "not the best way to go about it\n", mask);
1959 printk(TPACPI_NOTICE
1960 "please consider using the driver defaults, "
1961 "and refer to up-to-date thinkpad-acpi "
1962 "documentation\n");
1963 }
1964
1965 /* Try to enable what the user asked for, plus whatever we need.
1966 * this syncs everything but won't enable bits in hotkey_user_mask */
1967 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask);
1968
1969 /* Enable the available bits in hotkey_user_mask */
1970 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask);
1971
1972 return rc;
1973 }
1974
1975 /*
1976 * Sets the driver hotkey mask.
1977 *
1978 * Can be called even if the hotkey subdriver is inactive
1979 */
1980 static int tpacpi_hotkey_driver_mask_set(const u32 mask)
1981 {
1982 int rc;
1983
1984 /* Do the right thing if hotkey_init has not been called yet */
1985 if (!tp_features.hotkey) {
1986 hotkey_driver_mask = mask;
1987 return 0;
1988 }
1989
1990 mutex_lock(&hotkey_mutex);
1991
1992 HOTKEY_CONFIG_CRITICAL_START
1993 hotkey_driver_mask = mask;
1994 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1995 hotkey_source_mask |= (mask & ~hotkey_all_mask);
1996 #endif
1997 HOTKEY_CONFIG_CRITICAL_END
1998
1999 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) &
2000 ~hotkey_source_mask);
2001 mutex_unlock(&hotkey_mutex);
2002
2003 return rc;
2004 }
2005
2006 static int hotkey_status_get(int *status)
2007 {
2008 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
2009 return -EIO;
2010
2011 return 0;
2012 }
2013
2014 static int hotkey_status_set(bool enable)
2015 {
2016 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
2017 return -EIO;
2018
2019 return 0;
2020 }
2021
2022 static void tpacpi_input_send_tabletsw(void)
2023 {
2024 int state;
2025
2026 if (tp_features.hotkey_tablet &&
2027 !hotkey_get_tablet_mode(&state)) {
2028 mutex_lock(&tpacpi_inputdev_send_mutex);
2029
2030 input_report_switch(tpacpi_inputdev,
2031 SW_TABLET_MODE, !!state);
2032 input_sync(tpacpi_inputdev);
2033
2034 mutex_unlock(&tpacpi_inputdev_send_mutex);
2035 }
2036 }
2037
2038 /* Do NOT call without validating scancode first */
2039 static void tpacpi_input_send_key(const unsigned int scancode)
2040 {
2041 const unsigned int keycode = hotkey_keycode_map[scancode];
2042
2043 if (keycode != KEY_RESERVED) {
2044 mutex_lock(&tpacpi_inputdev_send_mutex);
2045
2046 input_report_key(tpacpi_inputdev, keycode, 1);
2047 if (keycode == KEY_UNKNOWN)
2048 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
2049 scancode);
2050 input_sync(tpacpi_inputdev);
2051
2052 input_report_key(tpacpi_inputdev, keycode, 0);
2053 if (keycode == KEY_UNKNOWN)
2054 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
2055 scancode);
2056 input_sync(tpacpi_inputdev);
2057
2058 mutex_unlock(&tpacpi_inputdev_send_mutex);
2059 }
2060 }
2061
2062 /* Do NOT call without validating scancode first */
2063 static void tpacpi_input_send_key_masked(const unsigned int scancode)
2064 {
2065 hotkey_driver_event(scancode);
2066 if (hotkey_user_mask & (1 << scancode))
2067 tpacpi_input_send_key(scancode);
2068 }
2069
2070 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2071 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
2072
2073 /* Do NOT call without validating scancode first */
2074 static void tpacpi_hotkey_send_key(unsigned int scancode)
2075 {
2076 tpacpi_input_send_key_masked(scancode);
2077 if (hotkey_report_mode < 2) {
2078 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
2079 0x80, TP_HKEY_EV_HOTKEY_BASE + scancode);
2080 }
2081 }
2082
2083 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m)
2084 {
2085 u8 d;
2086
2087 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
2088 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
2089 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
2090 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
2091 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
2092 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
2093 }
2094 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
2095 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
2096 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
2097 }
2098 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
2099 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
2100 n->displayexp_toggle =
2101 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
2102 }
2103 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
2104 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
2105 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
2106 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
2107 n->brightness_toggle =
2108 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
2109 }
2110 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
2111 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
2112 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
2113 >> TP_NVRAM_POS_LEVEL_VOLUME;
2114 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
2115 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
2116 }
2117 }
2118
2119 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
2120 struct tp_nvram_state *newn,
2121 const u32 event_mask)
2122 {
2123
2124 #define TPACPI_COMPARE_KEY(__scancode, __member) \
2125 do { \
2126 if ((event_mask & (1 << __scancode)) && \
2127 oldn->__member != newn->__member) \
2128 tpacpi_hotkey_send_key(__scancode); \
2129 } while (0)
2130
2131 #define TPACPI_MAY_SEND_KEY(__scancode) \
2132 do { \
2133 if (event_mask & (1 << __scancode)) \
2134 tpacpi_hotkey_send_key(__scancode); \
2135 } while (0)
2136
2137 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
2138 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
2139 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
2140 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
2141
2142 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
2143
2144 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
2145
2146 /* handle volume */
2147 if (oldn->volume_toggle != newn->volume_toggle) {
2148 if (oldn->mute != newn->mute) {
2149 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2150 }
2151 if (oldn->volume_level > newn->volume_level) {
2152 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2153 } else if (oldn->volume_level < newn->volume_level) {
2154 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2155 } else if (oldn->mute == newn->mute) {
2156 /* repeated key presses that didn't change state */
2157 if (newn->mute) {
2158 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
2159 } else if (newn->volume_level != 0) {
2160 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
2161 } else {
2162 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
2163 }
2164 }
2165 }
2166
2167 /* handle brightness */
2168 if (oldn->brightness_toggle != newn->brightness_toggle) {
2169 if (oldn->brightness_level < newn->brightness_level) {
2170 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2171 } else if (oldn->brightness_level > newn->brightness_level) {
2172 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2173 } else {
2174 /* repeated key presses that didn't change state */
2175 if (newn->brightness_level != 0) {
2176 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
2177 } else {
2178 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
2179 }
2180 }
2181 }
2182
2183 #undef TPACPI_COMPARE_KEY
2184 #undef TPACPI_MAY_SEND_KEY
2185 }
2186
2187 /*
2188 * Polling driver
2189 *
2190 * We track all events in hotkey_source_mask all the time, since
2191 * most of them are edge-based. We only issue those requested by
2192 * hotkey_user_mask or hotkey_driver_mask, though.
2193 */
2194 static int hotkey_kthread(void *data)
2195 {
2196 struct tp_nvram_state s[2];
2197 u32 poll_mask, event_mask;
2198 unsigned int si, so;
2199 unsigned long t;
2200 unsigned int change_detector, must_reset;
2201 unsigned int poll_freq;
2202
2203 mutex_lock(&hotkey_thread_mutex);
2204
2205 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
2206 goto exit;
2207
2208 set_freezable();
2209
2210 so = 0;
2211 si = 1;
2212 t = 0;
2213
2214 /* Initial state for compares */
2215 mutex_lock(&hotkey_thread_data_mutex);
2216 change_detector = hotkey_config_change;
2217 poll_mask = hotkey_source_mask;
2218 event_mask = hotkey_source_mask &
2219 (hotkey_driver_mask | hotkey_user_mask);
2220 poll_freq = hotkey_poll_freq;
2221 mutex_unlock(&hotkey_thread_data_mutex);
2222 hotkey_read_nvram(&s[so], poll_mask);
2223
2224 while (!kthread_should_stop()) {
2225 if (t == 0) {
2226 if (likely(poll_freq))
2227 t = 1000/poll_freq;
2228 else
2229 t = 100; /* should never happen... */
2230 }
2231 t = msleep_interruptible(t);
2232 if (unlikely(kthread_should_stop()))
2233 break;
2234 must_reset = try_to_freeze();
2235 if (t > 0 && !must_reset)
2236 continue;
2237
2238 mutex_lock(&hotkey_thread_data_mutex);
2239 if (must_reset || hotkey_config_change != change_detector) {
2240 /* forget old state on thaw or config change */
2241 si = so;
2242 t = 0;
2243 change_detector = hotkey_config_change;
2244 }
2245 poll_mask = hotkey_source_mask;
2246 event_mask = hotkey_source_mask &
2247 (hotkey_driver_mask | hotkey_user_mask);
2248 poll_freq = hotkey_poll_freq;
2249 mutex_unlock(&hotkey_thread_data_mutex);
2250
2251 if (likely(poll_mask)) {
2252 hotkey_read_nvram(&s[si], poll_mask);
2253 if (likely(si != so)) {
2254 hotkey_compare_and_issue_event(&s[so], &s[si],
2255 event_mask);
2256 }
2257 }
2258
2259 so = si;
2260 si ^= 1;
2261 }
2262
2263 exit:
2264 mutex_unlock(&hotkey_thread_mutex);
2265 return 0;
2266 }
2267
2268 /* call with hotkey_mutex held */
2269 static void hotkey_poll_stop_sync(void)
2270 {
2271 if (tpacpi_hotkey_task) {
2272 if (frozen(tpacpi_hotkey_task) ||
2273 freezing(tpacpi_hotkey_task))
2274 thaw_process(tpacpi_hotkey_task);
2275
2276 kthread_stop(tpacpi_hotkey_task);
2277 tpacpi_hotkey_task = NULL;
2278 mutex_lock(&hotkey_thread_mutex);
2279 /* at this point, the thread did exit */
2280 mutex_unlock(&hotkey_thread_mutex);
2281 }
2282 }
2283
2284 /* call with hotkey_mutex held */
2285 static void hotkey_poll_setup(bool may_warn)
2286 {
2287 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
2288 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
2289
2290 if (hotkey_poll_freq > 0 &&
2291 (poll_driver_mask ||
2292 (poll_user_mask && tpacpi_inputdev->users > 0))) {
2293 if (!tpacpi_hotkey_task) {
2294 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
2295 NULL, TPACPI_NVRAM_KTHREAD_NAME);
2296 if (IS_ERR(tpacpi_hotkey_task)) {
2297 tpacpi_hotkey_task = NULL;
2298 printk(TPACPI_ERR
2299 "could not create kernel thread "
2300 "for hotkey polling\n");
2301 }
2302 }
2303 } else {
2304 hotkey_poll_stop_sync();
2305 if (may_warn && (poll_driver_mask || poll_user_mask) &&
2306 hotkey_poll_freq == 0) {
2307 printk(TPACPI_NOTICE
2308 "hot keys 0x%08x and/or events 0x%08x "
2309 "require polling, which is currently "
2310 "disabled\n",
2311 poll_user_mask, poll_driver_mask);
2312 }
2313 }
2314 }
2315
2316 static void hotkey_poll_setup_safe(bool may_warn)
2317 {
2318 mutex_lock(&hotkey_mutex);
2319 hotkey_poll_setup(may_warn);
2320 mutex_unlock(&hotkey_mutex);
2321 }
2322
2323 /* call with hotkey_mutex held */
2324 static void hotkey_poll_set_freq(unsigned int freq)
2325 {
2326 if (!freq)
2327 hotkey_poll_stop_sync();
2328
2329 hotkey_poll_freq = freq;
2330 }
2331
2332 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2333
2334 static void hotkey_poll_setup_safe(bool __unused)
2335 {
2336 }
2337
2338 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2339
2340 static int hotkey_inputdev_open(struct input_dev *dev)
2341 {
2342 switch (tpacpi_lifecycle) {
2343 case TPACPI_LIFE_INIT:
2344 /*
2345 * hotkey_init will call hotkey_poll_setup_safe
2346 * at the appropriate moment
2347 */
2348 return 0;
2349 case TPACPI_LIFE_EXITING:
2350 return -EBUSY;
2351 case TPACPI_LIFE_RUNNING:
2352 hotkey_poll_setup_safe(false);
2353 return 0;
2354 }
2355
2356 /* Should only happen if tpacpi_lifecycle is corrupt */
2357 BUG();
2358 return -EBUSY;
2359 }
2360
2361 static void hotkey_inputdev_close(struct input_dev *dev)
2362 {
2363 /* disable hotkey polling when possible */
2364 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING &&
2365 !(hotkey_source_mask & hotkey_driver_mask))
2366 hotkey_poll_setup_safe(false);
2367 }
2368
2369 /* sysfs hotkey enable ------------------------------------------------- */
2370 static ssize_t hotkey_enable_show(struct device *dev,
2371 struct device_attribute *attr,
2372 char *buf)
2373 {
2374 int res, status;
2375
2376 printk_deprecated_attribute("hotkey_enable",
2377 "Hotkey reporting is always enabled");
2378
2379 res = hotkey_status_get(&status);
2380 if (res)
2381 return res;
2382
2383 return snprintf(buf, PAGE_SIZE, "%d\n", status);
2384 }
2385
2386 static ssize_t hotkey_enable_store(struct device *dev,
2387 struct device_attribute *attr,
2388 const char *buf, size_t count)
2389 {
2390 unsigned long t;
2391
2392 printk_deprecated_attribute("hotkey_enable",
2393 "Hotkeys can be disabled through hotkey_mask");
2394
2395 if (parse_strtoul(buf, 1, &t))
2396 return -EINVAL;
2397
2398 if (t == 0)
2399 return -EPERM;
2400
2401 return count;
2402 }
2403
2404 static struct device_attribute dev_attr_hotkey_enable =
2405 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
2406 hotkey_enable_show, hotkey_enable_store);
2407
2408 /* sysfs hotkey mask --------------------------------------------------- */
2409 static ssize_t hotkey_mask_show(struct device *dev,
2410 struct device_attribute *attr,
2411 char *buf)
2412 {
2413 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_user_mask);
2414 }
2415
2416 static ssize_t hotkey_mask_store(struct device *dev,
2417 struct device_attribute *attr,
2418 const char *buf, size_t count)
2419 {
2420 unsigned long t;
2421 int res;
2422
2423 if (parse_strtoul(buf, 0xffffffffUL, &t))
2424 return -EINVAL;
2425
2426 if (mutex_lock_killable(&hotkey_mutex))
2427 return -ERESTARTSYS;
2428
2429 res = hotkey_user_mask_set(t);
2430
2431 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2432 hotkey_poll_setup(true);
2433 #endif
2434
2435 mutex_unlock(&hotkey_mutex);
2436
2437 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
2438
2439 return (res) ? res : count;
2440 }
2441
2442 static struct device_attribute dev_attr_hotkey_mask =
2443 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
2444 hotkey_mask_show, hotkey_mask_store);
2445
2446 /* sysfs hotkey bios_enabled ------------------------------------------- */
2447 static ssize_t hotkey_bios_enabled_show(struct device *dev,
2448 struct device_attribute *attr,
2449 char *buf)
2450 {
2451 return sprintf(buf, "0\n");
2452 }
2453
2454 static struct device_attribute dev_attr_hotkey_bios_enabled =
2455 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
2456
2457 /* sysfs hotkey bios_mask ---------------------------------------------- */
2458 static ssize_t hotkey_bios_mask_show(struct device *dev,
2459 struct device_attribute *attr,
2460 char *buf)
2461 {
2462 printk_deprecated_attribute("hotkey_bios_mask",
2463 "This attribute is useless.");
2464 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
2465 }
2466
2467 static struct device_attribute dev_attr_hotkey_bios_mask =
2468 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
2469
2470 /* sysfs hotkey all_mask ----------------------------------------------- */
2471 static ssize_t hotkey_all_mask_show(struct device *dev,
2472 struct device_attribute *attr,
2473 char *buf)
2474 {
2475 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2476 hotkey_all_mask | hotkey_source_mask);
2477 }
2478
2479 static struct device_attribute dev_attr_hotkey_all_mask =
2480 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2481
2482 /* sysfs hotkey recommended_mask --------------------------------------- */
2483 static ssize_t hotkey_recommended_mask_show(struct device *dev,
2484 struct device_attribute *attr,
2485 char *buf)
2486 {
2487 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2488 (hotkey_all_mask | hotkey_source_mask)
2489 & ~hotkey_reserved_mask);
2490 }
2491
2492 static struct device_attribute dev_attr_hotkey_recommended_mask =
2493 __ATTR(hotkey_recommended_mask, S_IRUGO,
2494 hotkey_recommended_mask_show, NULL);
2495
2496 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2497
2498 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
2499 static ssize_t hotkey_source_mask_show(struct device *dev,
2500 struct device_attribute *attr,
2501 char *buf)
2502 {
2503 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2504 }
2505
2506 static ssize_t hotkey_source_mask_store(struct device *dev,
2507 struct device_attribute *attr,
2508 const char *buf, size_t count)
2509 {
2510 unsigned long t;
2511 u32 r_ev;
2512 int rc;
2513
2514 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2515 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2516 return -EINVAL;
2517
2518 if (mutex_lock_killable(&hotkey_mutex))
2519 return -ERESTARTSYS;
2520
2521 HOTKEY_CONFIG_CRITICAL_START
2522 hotkey_source_mask = t;
2523 HOTKEY_CONFIG_CRITICAL_END
2524
2525 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) &
2526 ~hotkey_source_mask);
2527 hotkey_poll_setup(true);
2528
2529 /* check if events needed by the driver got disabled */
2530 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask)
2531 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK;
2532
2533 mutex_unlock(&hotkey_mutex);
2534
2535 if (rc < 0)
2536 printk(TPACPI_ERR "hotkey_source_mask: failed to update the"
2537 "firmware event mask!\n");
2538
2539 if (r_ev)
2540 printk(TPACPI_NOTICE "hotkey_source_mask: "
2541 "some important events were disabled: "
2542 "0x%04x\n", r_ev);
2543
2544 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2545
2546 return (rc < 0) ? rc : count;
2547 }
2548
2549 static struct device_attribute dev_attr_hotkey_source_mask =
2550 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2551 hotkey_source_mask_show, hotkey_source_mask_store);
2552
2553 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2554 static ssize_t hotkey_poll_freq_show(struct device *dev,
2555 struct device_attribute *attr,
2556 char *buf)
2557 {
2558 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2559 }
2560
2561 static ssize_t hotkey_poll_freq_store(struct device *dev,
2562 struct device_attribute *attr,
2563 const char *buf, size_t count)
2564 {
2565 unsigned long t;
2566
2567 if (parse_strtoul(buf, 25, &t))
2568 return -EINVAL;
2569
2570 if (mutex_lock_killable(&hotkey_mutex))
2571 return -ERESTARTSYS;
2572
2573 hotkey_poll_set_freq(t);
2574 hotkey_poll_setup(true);
2575
2576 mutex_unlock(&hotkey_mutex);
2577
2578 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2579
2580 return count;
2581 }
2582
2583 static struct device_attribute dev_attr_hotkey_poll_freq =
2584 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2585 hotkey_poll_freq_show, hotkey_poll_freq_store);
2586
2587 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2588
2589 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2590 static ssize_t hotkey_radio_sw_show(struct device *dev,
2591 struct device_attribute *attr,
2592 char *buf)
2593 {
2594 int res, s;
2595 res = hotkey_get_wlsw(&s);
2596 if (res < 0)
2597 return res;
2598
2599 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2600 }
2601
2602 static struct device_attribute dev_attr_hotkey_radio_sw =
2603 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2604
2605 static void hotkey_radio_sw_notify_change(void)
2606 {
2607 if (tp_features.hotkey_wlsw)
2608 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2609 "hotkey_radio_sw");
2610 }
2611
2612 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2613 static ssize_t hotkey_tablet_mode_show(struct device *dev,
2614 struct device_attribute *attr,
2615 char *buf)
2616 {
2617 int res, s;
2618 res = hotkey_get_tablet_mode(&s);
2619 if (res < 0)
2620 return res;
2621
2622 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2623 }
2624
2625 static struct device_attribute dev_attr_hotkey_tablet_mode =
2626 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2627
2628 static void hotkey_tablet_mode_notify_change(void)
2629 {
2630 if (tp_features.hotkey_tablet)
2631 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2632 "hotkey_tablet_mode");
2633 }
2634
2635 /* sysfs hotkey report_mode -------------------------------------------- */
2636 static ssize_t hotkey_report_mode_show(struct device *dev,
2637 struct device_attribute *attr,
2638 char *buf)
2639 {
2640 return snprintf(buf, PAGE_SIZE, "%d\n",
2641 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2642 }
2643
2644 static struct device_attribute dev_attr_hotkey_report_mode =
2645 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2646
2647 /* sysfs wakeup reason (pollable) -------------------------------------- */
2648 static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2649 struct device_attribute *attr,
2650 char *buf)
2651 {
2652 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2653 }
2654
2655 static struct device_attribute dev_attr_hotkey_wakeup_reason =
2656 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2657
2658 static void hotkey_wakeup_reason_notify_change(void)
2659 {
2660 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2661 "wakeup_reason");
2662 }
2663
2664 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2665 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2666 struct device_attribute *attr,
2667 char *buf)
2668 {
2669 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2670 }
2671
2672 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2673 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2674 hotkey_wakeup_hotunplug_complete_show, NULL);
2675
2676 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2677 {
2678 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2679 "wakeup_hotunplug_complete");
2680 }
2681
2682 /* --------------------------------------------------------------------- */
2683
2684 static struct attribute *hotkey_attributes[] __initdata = {
2685 &dev_attr_hotkey_enable.attr,
2686 &dev_attr_hotkey_bios_enabled.attr,
2687 &dev_attr_hotkey_bios_mask.attr,
2688 &dev_attr_hotkey_report_mode.attr,
2689 &dev_attr_hotkey_wakeup_reason.attr,
2690 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
2691 &dev_attr_hotkey_mask.attr,
2692 &dev_attr_hotkey_all_mask.attr,
2693 &dev_attr_hotkey_recommended_mask.attr,
2694 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2695 &dev_attr_hotkey_source_mask.attr,
2696 &dev_attr_hotkey_poll_freq.attr,
2697 #endif
2698 };
2699
2700 static void bluetooth_update_rfk(void);
2701 static void wan_update_rfk(void);
2702 static void uwb_update_rfk(void);
2703 static void tpacpi_send_radiosw_update(void)
2704 {
2705 int wlsw;
2706
2707 /* Sync these BEFORE sending any rfkill events */
2708 if (tp_features.bluetooth)
2709 bluetooth_update_rfk();
2710 if (tp_features.wan)
2711 wan_update_rfk();
2712 if (tp_features.uwb)
2713 uwb_update_rfk();
2714
2715 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
2716 mutex_lock(&tpacpi_inputdev_send_mutex);
2717
2718 input_report_switch(tpacpi_inputdev,
2719 SW_RFKILL_ALL, !!wlsw);
2720 input_sync(tpacpi_inputdev);
2721
2722 mutex_unlock(&tpacpi_inputdev_send_mutex);
2723 }
2724 hotkey_radio_sw_notify_change();
2725 }
2726
2727 static void hotkey_exit(void)
2728 {
2729 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2730 mutex_lock(&hotkey_mutex);
2731 hotkey_poll_stop_sync();
2732 mutex_unlock(&hotkey_mutex);
2733 #endif
2734
2735 if (hotkey_dev_attributes)
2736 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2737
2738 kfree(hotkey_keycode_map);
2739
2740 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
2741 "restoring original HKEY status and mask\n");
2742 /* yes, there is a bitwise or below, we want the
2743 * functions to be called even if one of them fail */
2744 if (((tp_features.hotkey_mask &&
2745 hotkey_mask_set(hotkey_orig_mask)) |
2746 hotkey_status_set(false)) != 0)
2747 printk(TPACPI_ERR
2748 "failed to restore hot key mask "
2749 "to BIOS defaults\n");
2750 }
2751
2752 static void __init hotkey_unmap(const unsigned int scancode)
2753 {
2754 if (hotkey_keycode_map[scancode] != KEY_RESERVED) {
2755 clear_bit(hotkey_keycode_map[scancode],
2756 tpacpi_inputdev->keybit);
2757 hotkey_keycode_map[scancode] = KEY_RESERVED;
2758 }
2759 }
2760
2761 /*
2762 * HKEY quirks:
2763 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12
2764 */
2765
2766 #define TPACPI_HK_Q_INIMASK 0x0001
2767
2768 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = {
2769 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */
2770 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */
2771 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */
2772 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */
2773 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */
2774 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */
2775 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */
2776 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */
2777 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */
2778 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */
2779 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */
2780 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */
2781 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */
2782 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */
2783 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */
2784 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */
2785 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */
2786 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */
2787 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */
2788 };
2789
2790 static int __init hotkey_init(struct ibm_init_struct *iibm)
2791 {
2792 /* Requirements for changing the default keymaps:
2793 *
2794 * 1. Many of the keys are mapped to KEY_RESERVED for very
2795 * good reasons. Do not change them unless you have deep
2796 * knowledge on the IBM and Lenovo ThinkPad firmware for
2797 * the various ThinkPad models. The driver behaves
2798 * differently for KEY_RESERVED: such keys have their
2799 * hot key mask *unset* in mask_recommended, and also
2800 * in the initial hot key mask programmed into the
2801 * firmware at driver load time, which means the firm-
2802 * ware may react very differently if you change them to
2803 * something else;
2804 *
2805 * 2. You must be subscribed to the linux-thinkpad and
2806 * ibm-acpi-devel mailing lists, and you should read the
2807 * list archives since 2007 if you want to change the
2808 * keymaps. This requirement exists so that you will
2809 * know the past history of problems with the thinkpad-
2810 * acpi driver keymaps, and also that you will be
2811 * listening to any bug reports;
2812 *
2813 * 3. Do not send thinkpad-acpi specific patches directly to
2814 * for merging, *ever*. Send them to the linux-acpi
2815 * mailinglist for comments. Merging is to be done only
2816 * through acpi-test and the ACPI maintainer.
2817 *
2818 * If the above is too much to ask, don't change the keymap.
2819 * Ask the thinkpad-acpi maintainer to do it, instead.
2820 */
2821 static u16 ibm_keycode_map[] __initdata = {
2822 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2823 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
2824 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2825 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
2826
2827 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2828 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2829 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2830 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
2831
2832 /* brightness: firmware always reacts to them */
2833 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
2834 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
2835
2836 /* Thinklight: firmware always react to it */
2837 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
2838
2839 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2840 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
2841
2842 /* Volume: firmware always react to it and reprograms
2843 * the built-in *extra* mixer. Never map it to control
2844 * another mixer by default. */
2845 KEY_RESERVED, /* 0x14: VOLUME UP */
2846 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2847 KEY_RESERVED, /* 0x16: MUTE */
2848
2849 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2850
2851 /* (assignments unknown, please report if found) */
2852 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2853 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2854 };
2855 static u16 lenovo_keycode_map[] __initdata = {
2856 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2857 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2858 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2859 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
2860
2861 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2862 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2863 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2864 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
2865
2866 /* These should be enabled --only-- when ACPI video
2867 * is disabled (i.e. in "vendor" mode), and are handled
2868 * in a special way by the init code */
2869 KEY_BRIGHTNESSUP, /* 0x0F: FN+HOME (brightness up) */
2870 KEY_BRIGHTNESSDOWN, /* 0x10: FN+END (brightness down) */
2871
2872 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
2873
2874 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2875 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
2876
2877 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2878 * react to it and reprograms the built-in *extra* mixer.
2879 * Never map it to control another mixer by default.
2880 *
2881 * T60?, T61, R60?, R61: firmware and EC tries to send
2882 * these over the regular keyboard, so these are no-ops,
2883 * but there are still weird bugs re. MUTE, so do not
2884 * change unless you get test reports from all Lenovo
2885 * models. May cause the BIOS to interfere with the
2886 * HDA mixer.
2887 */
2888 KEY_RESERVED, /* 0x14: VOLUME UP */
2889 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2890 KEY_RESERVED, /* 0x16: MUTE */
2891
2892 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2893
2894 /* (assignments unknown, please report if found) */
2895 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2896 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2897 };
2898
2899 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2900 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2901 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2902
2903 int res, i;
2904 int status;
2905 int hkeyv;
2906 bool radiosw_state = false;
2907 bool tabletsw_state = false;
2908
2909 unsigned long quirks;
2910
2911 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2912 "initializing hotkey subdriver\n");
2913
2914 BUG_ON(!tpacpi_inputdev);
2915 BUG_ON(tpacpi_inputdev->open != NULL ||
2916 tpacpi_inputdev->close != NULL);
2917
2918 TPACPI_ACPIHANDLE_INIT(hkey);
2919 mutex_init(&hotkey_mutex);
2920
2921 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2922 mutex_init(&hotkey_thread_mutex);
2923 mutex_init(&hotkey_thread_data_mutex);
2924 #endif
2925
2926 /* hotkey not supported on 570 */
2927 tp_features.hotkey = hkey_handle != NULL;
2928
2929 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2930 "hotkeys are %s\n",
2931 str_supported(tp_features.hotkey));
2932
2933 if (!tp_features.hotkey)
2934 return 1;
2935
2936 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
2937 ARRAY_SIZE(tpacpi_hotkey_qtable));
2938
2939 tpacpi_disable_brightness_delay();
2940
2941 /* MUST have enough space for all attributes to be added to
2942 * hotkey_dev_attributes */
2943 hotkey_dev_attributes = create_attr_set(
2944 ARRAY_SIZE(hotkey_attributes) + 2,
2945 NULL);
2946 if (!hotkey_dev_attributes)
2947 return -ENOMEM;
2948 res = add_many_to_attr_set(hotkey_dev_attributes,
2949 hotkey_attributes,
2950 ARRAY_SIZE(hotkey_attributes));
2951 if (res)
2952 goto err_exit;
2953
2954 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p,
2955 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2956 for HKEY interface version 0x100 */
2957 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
2958 if ((hkeyv >> 8) != 1) {
2959 printk(TPACPI_ERR "unknown version of the "
2960 "HKEY interface: 0x%x\n", hkeyv);
2961 printk(TPACPI_ERR "please report this to %s\n",
2962 TPACPI_MAIL);
2963 } else {
2964 /*
2965 * MHKV 0x100 in A31, R40, R40e,
2966 * T4x, X31, and later
2967 */
2968 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2969 "firmware HKEY interface version: 0x%x\n",
2970 hkeyv);
2971
2972 /* Paranoia check AND init hotkey_all_mask */
2973 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
2974 "MHKA", "qd")) {
2975 printk(TPACPI_ERR
2976 "missing MHKA handler, "
2977 "please report this to %s\n",
2978 TPACPI_MAIL);
2979 /* Fallback: pre-init for FN+F3,F4,F12 */
2980 hotkey_all_mask = 0x080cU;
2981 } else {
2982 tp_features.hotkey_mask = 1;
2983 }
2984 }
2985 }
2986
2987 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2988 "hotkey masks are %s\n",
2989 str_supported(tp_features.hotkey_mask));
2990
2991 /* Init hotkey_all_mask if not initialized yet */
2992 if (!tp_features.hotkey_mask && !hotkey_all_mask &&
2993 (quirks & TPACPI_HK_Q_INIMASK))
2994 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */
2995
2996 /* Init hotkey_acpi_mask and hotkey_orig_mask */
2997 if (tp_features.hotkey_mask) {
2998 /* hotkey_source_mask *must* be zero for
2999 * the first hotkey_mask_get to return hotkey_orig_mask */
3000 res = hotkey_mask_get();
3001 if (res)
3002 goto err_exit;
3003
3004 hotkey_orig_mask = hotkey_acpi_mask;
3005 } else {
3006 hotkey_orig_mask = hotkey_all_mask;
3007 hotkey_acpi_mask = hotkey_all_mask;
3008 }
3009
3010 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3011 if (dbg_wlswemul) {
3012 tp_features.hotkey_wlsw = 1;
3013 radiosw_state = !!tpacpi_wlsw_emulstate;
3014 printk(TPACPI_INFO
3015 "radio switch emulation enabled\n");
3016 } else
3017 #endif
3018 /* Not all thinkpads have a hardware radio switch */
3019 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
3020 tp_features.hotkey_wlsw = 1;
3021 radiosw_state = !!status;
3022 printk(TPACPI_INFO
3023 "radio switch found; radios are %s\n",
3024 enabled(status, 0));
3025 }
3026 if (tp_features.hotkey_wlsw)
3027 res = add_to_attr_set(hotkey_dev_attributes,
3028 &dev_attr_hotkey_radio_sw.attr);
3029
3030 /* For X41t, X60t, X61t Tablets... */
3031 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
3032 tp_features.hotkey_tablet = 1;
3033 tabletsw_state = !!(status & TP_HOTKEY_TABLET_MASK);
3034 printk(TPACPI_INFO
3035 "possible tablet mode switch found; "
3036 "ThinkPad in %s mode\n",
3037 (tabletsw_state) ? "tablet" : "laptop");
3038 res = add_to_attr_set(hotkey_dev_attributes,
3039 &dev_attr_hotkey_tablet_mode.attr);
3040 }
3041
3042 if (!res)
3043 res = register_attr_set_with_sysfs(
3044 hotkey_dev_attributes,
3045 &tpacpi_pdev->dev.kobj);
3046 if (res)
3047 goto err_exit;
3048
3049 /* Set up key map */
3050
3051 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
3052 GFP_KERNEL);
3053 if (!hotkey_keycode_map) {
3054 printk(TPACPI_ERR
3055 "failed to allocate memory for key map\n");
3056 res = -ENOMEM;
3057 goto err_exit;
3058 }
3059
3060 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
3061 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3062 "using Lenovo default hot key map\n");
3063 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
3064 TPACPI_HOTKEY_MAP_SIZE);
3065 } else {
3066 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3067 "using IBM default hot key map\n");
3068 memcpy(hotkey_keycode_map, &ibm_keycode_map,
3069 TPACPI_HOTKEY_MAP_SIZE);
3070 }
3071
3072 input_set_capability(tpacpi_inputdev, EV_MSC, MSC_SCAN);
3073 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
3074 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
3075 tpacpi_inputdev->keycode = hotkey_keycode_map;
3076 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
3077 if (hotkey_keycode_map[i] != KEY_RESERVED) {
3078 input_set_capability(tpacpi_inputdev, EV_KEY,
3079 hotkey_keycode_map[i]);
3080 } else {
3081 if (i < sizeof(hotkey_reserved_mask)*8)
3082 hotkey_reserved_mask |= 1 << i;
3083 }
3084 }
3085
3086 if (tp_features.hotkey_wlsw) {
3087 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL);
3088 input_report_switch(tpacpi_inputdev,
3089 SW_RFKILL_ALL, radiosw_state);
3090 }
3091 if (tp_features.hotkey_tablet) {
3092 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE);
3093 input_report_switch(tpacpi_inputdev,
3094 SW_TABLET_MODE, tabletsw_state);
3095 }
3096
3097 /* Do not issue duplicate brightness change events to
3098 * userspace */
3099 if (!tp_features.bright_acpimode)
3100 /* update bright_acpimode... */
3101 tpacpi_check_std_acpi_brightness_support();
3102
3103 if (tp_features.bright_acpimode && acpi_video_backlight_support()) {
3104 printk(TPACPI_INFO
3105 "This ThinkPad has standard ACPI backlight "
3106 "brightness control, supported by the ACPI "
3107 "video driver\n");
3108 printk(TPACPI_NOTICE
3109 "Disabling thinkpad-acpi brightness events "
3110 "by default...\n");
3111
3112 /* Disable brightness up/down on Lenovo thinkpads when
3113 * ACPI is handling them, otherwise it is plain impossible
3114 * for userspace to do something even remotely sane */
3115 hotkey_reserved_mask |=
3116 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
3117 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
3118 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNHOME);
3119 hotkey_unmap(TP_ACPI_HOTKEYSCAN_FNEND);
3120 }
3121
3122 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
3123 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
3124 & ~hotkey_all_mask
3125 & ~hotkey_reserved_mask;
3126
3127 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3128 "hotkey source mask 0x%08x, polling freq %u\n",
3129 hotkey_source_mask, hotkey_poll_freq);
3130 #endif
3131
3132 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3133 "enabling firmware HKEY event interface...\n");
3134 res = hotkey_status_set(true);
3135 if (res) {
3136 hotkey_exit();
3137 return res;
3138 }
3139 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask)
3140 | hotkey_driver_mask)
3141 & ~hotkey_source_mask);
3142 if (res < 0 && res != -ENXIO) {
3143 hotkey_exit();
3144 return res;
3145 }
3146 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask)
3147 & ~hotkey_reserved_mask;
3148 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3149 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
3150 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
3151
3152 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
3153 "legacy ibm/hotkey event reporting over procfs %s\n",
3154 (hotkey_report_mode < 2) ?
3155 "enabled" : "disabled");
3156
3157 tpacpi_inputdev->open = &hotkey_inputdev_open;
3158 tpacpi_inputdev->close = &hotkey_inputdev_close;
3159
3160 hotkey_poll_setup_safe(true);
3161
3162 return 0;
3163
3164 err_exit:
3165 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
3166 hotkey_dev_attributes = NULL;
3167
3168 return (res < 0)? res : 1;
3169 }
3170
3171 static bool hotkey_notify_hotkey(const u32 hkey,
3172 bool *send_acpi_ev,
3173 bool *ignore_acpi_ev)
3174 {
3175 /* 0x1000-0x1FFF: key presses */
3176 unsigned int scancode = hkey & 0xfff;
3177 *send_acpi_ev = true;
3178 *ignore_acpi_ev = false;
3179
3180 if (scancode > 0 && scancode < 0x21) {
3181 scancode--;
3182 if (!(hotkey_source_mask & (1 << scancode))) {
3183 tpacpi_input_send_key_masked(scancode);
3184 *send_acpi_ev = false;
3185 } else {
3186 *ignore_acpi_ev = true;
3187 }
3188 return true;
3189 }
3190 return false;
3191 }
3192
3193 static bool hotkey_notify_wakeup(const u32 hkey,
3194 bool *send_acpi_ev,
3195 bool *ignore_acpi_ev)
3196 {
3197 /* 0x2000-0x2FFF: Wakeup reason */
3198 *send_acpi_ev = true;
3199 *ignore_acpi_ev = false;
3200
3201 switch (hkey) {
3202 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */
3203 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */
3204 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
3205 *ignore_acpi_ev = true;
3206 break;
3207
3208 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */
3209 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */
3210 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
3211 *ignore_acpi_ev = true;
3212 break;
3213
3214 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */
3215 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */
3216 printk(TPACPI_ALERT
3217 "EMERGENCY WAKEUP: battery almost empty\n");
3218 /* how to auto-heal: */
3219 /* 2313: woke up from S3, go to S4/S5 */
3220 /* 2413: woke up from S4, go to S5 */
3221 break;
3222
3223 default:
3224 return false;
3225 }
3226
3227 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
3228 printk(TPACPI_INFO
3229 "woke up due to a hot-unplug "
3230 "request...\n");
3231 hotkey_wakeup_reason_notify_change();
3232 }
3233 return true;
3234 }
3235
3236 static bool hotkey_notify_usrevent(const u32 hkey,
3237 bool *send_acpi_ev,
3238 bool *ignore_acpi_ev)
3239 {
3240 /* 0x5000-0x5FFF: human interface helpers */
3241 *send_acpi_ev = true;
3242 *ignore_acpi_ev = false;
3243
3244 switch (hkey) {
3245 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */
3246 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */
3247 return true;
3248
3249 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */
3250 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */
3251 tpacpi_input_send_tabletsw();
3252 hotkey_tablet_mode_notify_change();
3253 *send_acpi_ev = false;
3254 return true;
3255
3256 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */
3257 case TP_HKEY_EV_LID_OPEN: /* Lid opened */
3258 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */
3259 /* do not propagate these events */
3260 *ignore_acpi_ev = true;
3261 return true;
3262
3263 default:
3264 return false;
3265 }
3266 }
3267
3268 static void thermal_dump_all_sensors(void);
3269
3270 static bool hotkey_notify_thermal(const u32 hkey,
3271 bool *send_acpi_ev,
3272 bool *ignore_acpi_ev)
3273 {
3274 bool known = true;
3275
3276 /* 0x6000-0x6FFF: thermal alarms */
3277 *send_acpi_ev = true;
3278 *ignore_acpi_ev = false;
3279
3280 switch (hkey) {
3281 case TP_HKEY_EV_THM_TABLE_CHANGED:
3282 printk(TPACPI_INFO
3283 "EC reports that Thermal Table has changed\n");
3284 /* recommended action: do nothing, we don't have
3285 * Lenovo ATM information */
3286 return true;
3287 case TP_HKEY_EV_ALARM_BAT_HOT:
3288 printk(TPACPI_CRIT
3289 "THERMAL ALARM: battery is too hot!\n");
3290 /* recommended action: warn user through gui */
3291 break;
3292 case TP_HKEY_EV_ALARM_BAT_XHOT:
3293 printk(TPACPI_ALERT
3294 "THERMAL EMERGENCY: battery is extremely hot!\n");
3295 /* recommended action: immediate sleep/hibernate */
3296 break;
3297 case TP_HKEY_EV_ALARM_SENSOR_HOT:
3298 printk(TPACPI_CRIT
3299 "THERMAL ALARM: "
3300 "a sensor reports something is too hot!\n");
3301 /* recommended action: warn user through gui, that */
3302 /* some internal component is too hot */
3303 break;
3304 case TP_HKEY_EV_ALARM_SENSOR_XHOT:
3305 printk(TPACPI_ALERT
3306 "THERMAL EMERGENCY: "
3307 "a sensor reports something is extremely hot!\n");
3308 /* recommended action: immediate sleep/hibernate */
3309 break;
3310 default:
3311 printk(TPACPI_ALERT
3312 "THERMAL ALERT: unknown thermal alarm received\n");
3313 known = false;
3314 }
3315
3316 thermal_dump_all_sensors();
3317
3318 return known;
3319 }
3320
3321 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
3322 {
3323 u32 hkey;
3324 bool send_acpi_ev;
3325 bool ignore_acpi_ev;
3326 bool known_ev;
3327
3328 if (event != 0x80) {
3329 printk(TPACPI_ERR
3330 "unknown HKEY notification event %d\n", event);
3331 /* forward it to userspace, maybe it knows how to handle it */
3332 acpi_bus_generate_netlink_event(
3333 ibm->acpi->device->pnp.device_class,
3334 dev_name(&ibm->acpi->device->dev),
3335 event, 0);
3336 return;
3337 }
3338
3339 while (1) {
3340 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
3341 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
3342 return;
3343 }
3344
3345 if (hkey == 0) {
3346 /* queue empty */
3347 return;
3348 }
3349
3350 send_acpi_ev = true;
3351 ignore_acpi_ev = false;
3352
3353 switch (hkey >> 12) {
3354 case 1:
3355 /* 0x1000-0x1FFF: key presses */
3356 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
3357 &ignore_acpi_ev);
3358 break;
3359 case 2:
3360 /* 0x2000-0x2FFF: Wakeup reason */
3361 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
3362 &ignore_acpi_ev);
3363 break;
3364 case 3:
3365 /* 0x3000-0x3FFF: bay-related wakeups */
3366 if (hkey == TP_HKEY_EV_BAYEJ_ACK) {
3367 hotkey_autosleep_ack = 1;
3368 printk(TPACPI_INFO
3369 "bay ejected\n");
3370 hotkey_wakeup_hotunplug_complete_notify_change();
3371 known_ev = true;
3372 } else {
3373 known_ev = false;
3374 }
3375 break;
3376 case 4:
3377 /* 0x4000-0x4FFF: dock-related wakeups */
3378 if (hkey == TP_HKEY_EV_UNDOCK_ACK) {
3379 hotkey_autosleep_ack = 1;
3380 printk(TPACPI_INFO
3381 "undocked\n");
3382 hotkey_wakeup_hotunplug_complete_notify_change();
3383 known_ev = true;
3384 } else {
3385 known_ev = false;
3386 }
3387 break;
3388 case 5:
3389 /* 0x5000-0x5FFF: human interface helpers */
3390 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
3391 &ignore_acpi_ev);
3392 break;
3393 case 6:
3394 /* 0x6000-0x6FFF: thermal alarms */
3395 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
3396 &ignore_acpi_ev);
3397 break;
3398 case 7:
3399 /* 0x7000-0x7FFF: misc */
3400 if (tp_features.hotkey_wlsw &&
3401 hkey == TP_HKEY_EV_RFKILL_CHANGED) {
3402 tpacpi_send_radiosw_update();
3403 send_acpi_ev = 0;
3404 known_ev = true;
3405 break;
3406 }
3407 /* fallthrough to default */
3408 default:
3409 known_ev = false;
3410 }
3411 if (!known_ev) {
3412 printk(TPACPI_NOTICE
3413 "unhandled HKEY event 0x%04x\n", hkey);
3414 printk(TPACPI_NOTICE
3415 "please report the conditions when this "
3416 "event happened to %s\n", TPACPI_MAIL);
3417 }
3418
3419 /* Legacy events */
3420 if (!ignore_acpi_ev &&
3421 (send_acpi_ev || hotkey_report_mode < 2)) {
3422 acpi_bus_generate_proc_event(ibm->acpi->device,
3423 event, hkey);
3424 }
3425
3426 /* netlink events */
3427 if (!ignore_acpi_ev && send_acpi_ev) {
3428 acpi_bus_generate_netlink_event(
3429 ibm->acpi->device->pnp.device_class,
3430 dev_name(&ibm->acpi->device->dev),
3431 event, hkey);
3432 }
3433 }
3434 }
3435
3436 static void hotkey_suspend(pm_message_t state)
3437 {
3438 /* Do these on suspend, we get the events on early resume! */
3439 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
3440 hotkey_autosleep_ack = 0;
3441 }
3442
3443 static void hotkey_resume(void)
3444 {
3445 tpacpi_disable_brightness_delay();
3446
3447 if (hotkey_status_set(true) < 0 ||
3448 hotkey_mask_set(hotkey_acpi_mask) < 0)
3449 printk(TPACPI_ERR
3450 "error while attempting to reset the event "
3451 "firmware interface\n");
3452
3453 tpacpi_send_radiosw_update();
3454 hotkey_tablet_mode_notify_change();
3455 hotkey_wakeup_reason_notify_change();
3456 hotkey_wakeup_hotunplug_complete_notify_change();
3457 hotkey_poll_setup_safe(false);
3458 }
3459
3460 /* procfs -------------------------------------------------------------- */
3461 static int hotkey_read(struct seq_file *m)
3462 {
3463 int res, status;
3464
3465 if (!tp_features.hotkey) {
3466 seq_printf(m, "status:\t\tnot supported\n");
3467 return 0;
3468 }
3469
3470 if (mutex_lock_killable(&hotkey_mutex))
3471 return -ERESTARTSYS;
3472 res = hotkey_status_get(&status);
3473 if (!res)
3474 res = hotkey_mask_get();
3475 mutex_unlock(&hotkey_mutex);
3476 if (res)
3477 return res;
3478
3479 seq_printf(m, "status:\t\t%s\n", enabled(status, 0));
3480 if (hotkey_all_mask) {
3481 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask);
3482 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n");
3483 } else {
3484 seq_printf(m, "mask:\t\tnot supported\n");
3485 seq_printf(m, "commands:\tenable, disable, reset\n");
3486 }
3487
3488 return 0;
3489 }
3490
3491 static void hotkey_enabledisable_warn(bool enable)
3492 {
3493 tpacpi_log_usertask("procfs hotkey enable/disable");
3494 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
3495 TPACPI_WARN
3496 "hotkey enable/disable functionality has been "
3497 "removed from the driver. Hotkeys are always "
3498 "enabled\n"))
3499 printk(TPACPI_ERR
3500 "Please remove the hotkey=enable module "
3501 "parameter, it is deprecated. Hotkeys are always "
3502 "enabled\n");
3503 }
3504
3505 static int hotkey_write(char *buf)
3506 {
3507 int res;
3508 u32 mask;
3509 char *cmd;
3510
3511 if (!tp_features.hotkey)
3512 return -ENODEV;
3513
3514 if (mutex_lock_killable(&hotkey_mutex))
3515 return -ERESTARTSYS;
3516
3517 mask = hotkey_user_mask;
3518
3519 res = 0;
3520 while ((cmd = next_cmd(&buf))) {
3521 if (strlencmp(cmd, "enable") == 0) {
3522 hotkey_enabledisable_warn(1);
3523 } else if (strlencmp(cmd, "disable") == 0) {
3524 hotkey_enabledisable_warn(0);
3525 res = -EPERM;
3526 } else if (strlencmp(cmd, "reset") == 0) {
3527 mask = (hotkey_all_mask | hotkey_source_mask)
3528 & ~hotkey_reserved_mask;
3529 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
3530 /* mask set */
3531 } else if (sscanf(cmd, "%x", &mask) == 1) {
3532 /* mask set */
3533 } else {
3534 res = -EINVAL;
3535 goto errexit;
3536 }
3537 }
3538
3539 if (!res) {
3540 tpacpi_disclose_usertask("procfs hotkey",
3541 "set mask to 0x%08x\n", mask);
3542 res = hotkey_user_mask_set(mask);
3543 }
3544
3545 errexit:
3546 mutex_unlock(&hotkey_mutex);
3547 return res;
3548 }
3549
3550 static const struct acpi_device_id ibm_htk_device_ids[] = {
3551 {TPACPI_ACPI_HKEY_HID, 0},
3552 {"", 0},
3553 };
3554
3555 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
3556 .hid = ibm_htk_device_ids,
3557 .notify = hotkey_notify,
3558 .handle = &hkey_handle,
3559 .type = ACPI_DEVICE_NOTIFY,
3560 };
3561
3562 static struct ibm_struct hotkey_driver_data = {
3563 .name = "hotkey",
3564 .read = hotkey_read,
3565 .write = hotkey_write,
3566 .exit = hotkey_exit,
3567 .resume = hotkey_resume,
3568 .suspend = hotkey_suspend,
3569 .acpi = &ibm_hotkey_acpidriver,
3570 };
3571
3572 /*************************************************************************
3573 * Bluetooth subdriver
3574 */
3575
3576 enum {
3577 /* ACPI GBDC/SBDC bits */
3578 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3579 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
3580 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
3581 off / last state */
3582 };
3583
3584 enum {
3585 /* ACPI \BLTH commands */
3586 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3587 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3588 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3589 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3590 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
3591 };
3592
3593 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3594
3595 static struct rfkill *tpacpi_bluetooth_rfkill;
3596
3597 static void bluetooth_suspend(pm_message_t state)
3598 {
3599 /* Try to make sure radio will resume powered off */
3600 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3601 TP_ACPI_BLTH_PWR_OFF_ON_RESUME))
3602 vdbg_printk(TPACPI_DBG_RFKILL,
3603 "bluetooth power down on resume request failed\n");
3604 }
3605
3606 static int bluetooth_get_radiosw(void)
3607 {
3608 int status;
3609
3610 if (!tp_features.bluetooth)
3611 return -ENODEV;
3612
3613 /* WLSW overrides bluetooth in firmware/hardware, reflect that */
3614 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3615 return RFKILL_STATE_HARD_BLOCKED;
3616
3617 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3618 if (dbg_bluetoothemul)
3619 return (tpacpi_bluetooth_emulstate) ?
3620 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3621 #endif
3622
3623 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3624 return -EIO;
3625
3626 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
3627 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3628 }
3629
3630 static void bluetooth_update_rfk(void)
3631 {
3632 int status;
3633
3634 if (!tpacpi_bluetooth_rfkill)
3635 return;
3636
3637 status = bluetooth_get_radiosw();
3638 if (status < 0)
3639 return;
3640 rfkill_force_state(tpacpi_bluetooth_rfkill, status);
3641
3642 vdbg_printk(TPACPI_DBG_RFKILL,
3643 "forced rfkill state to %d\n",
3644 status);
3645 }
3646
3647 static int bluetooth_set_radiosw(int radio_on, int update_rfk)
3648 {
3649 int status;
3650
3651 if (!tp_features.bluetooth)
3652 return -ENODEV;
3653
3654 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3655 * reason to risk weird behaviour. */
3656 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3657 && radio_on)
3658 return -EPERM;
3659
3660 vdbg_printk(TPACPI_DBG_RFKILL,
3661 "will %s bluetooth\n", radio_on ? "enable" : "disable");
3662
3663 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3664 if (dbg_bluetoothemul) {
3665 tpacpi_bluetooth_emulstate = !!radio_on;
3666 if (update_rfk)
3667 bluetooth_update_rfk();
3668 return 0;
3669 }
3670 #endif
3671
3672 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
3673 if (radio_on)
3674 status = TP_ACPI_BLUETOOTH_RADIOSSW;
3675 else
3676 status = 0;
3677 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3678 return -EIO;
3679
3680 if (update_rfk)
3681 bluetooth_update_rfk();
3682
3683 return 0;
3684 }
3685
3686 /* sysfs bluetooth enable ---------------------------------------------- */
3687 static ssize_t bluetooth_enable_show(struct device *dev,
3688 struct device_attribute *attr,
3689 char *buf)
3690 {
3691 int status;
3692
3693 printk_deprecated_rfkill_attribute("bluetooth_enable");
3694
3695 status = bluetooth_get_radiosw();
3696 if (status < 0)
3697 return status;
3698
3699 return snprintf(buf, PAGE_SIZE, "%d\n",
3700 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
3701 }
3702
3703 static ssize_t bluetooth_enable_store(struct device *dev,
3704 struct device_attribute *attr,
3705 const char *buf, size_t count)
3706 {
3707 unsigned long t;
3708 int res;
3709
3710 printk_deprecated_rfkill_attribute("bluetooth_enable");
3711
3712 if (parse_strtoul(buf, 1, &t))
3713 return -EINVAL;
3714
3715 tpacpi_disclose_usertask("bluetooth_enable", "set to %ld\n", t);
3716
3717 res = bluetooth_set_radiosw(t, 1);
3718
3719 return (res) ? res : count;
3720 }
3721
3722 static struct device_attribute dev_attr_bluetooth_enable =
3723 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
3724 bluetooth_enable_show, bluetooth_enable_store);
3725
3726 /* --------------------------------------------------------------------- */
3727
3728 static struct attribute *bluetooth_attributes[] = {
3729 &dev_attr_bluetooth_enable.attr,
3730 NULL
3731 };
3732
3733 static const struct attribute_group bluetooth_attr_group = {
3734 .attrs = bluetooth_attributes,
3735 };
3736
3737 static int tpacpi_bluetooth_rfk_get(void *data, enum rfkill_state *state)
3738 {
3739 int bts = bluetooth_get_radiosw();
3740
3741 if (bts < 0)
3742 return bts;
3743
3744 *state = bts;
3745 return 0;
3746 }
3747
3748 static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
3749 {
3750 dbg_printk(TPACPI_DBG_RFKILL,
3751 "request to change radio state to %d\n", state);
3752 return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3753 }
3754
3755 static void bluetooth_shutdown(void)
3756 {
3757 /* Order firmware to save current state to NVRAM */
3758 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3759 TP_ACPI_BLTH_SAVE_STATE))
3760 printk(TPACPI_NOTICE
3761 "failed to save bluetooth state to NVRAM\n");
3762 else
3763 vdbg_printk(TPACPI_DBG_RFKILL,
3764 "bluestooth state saved to NVRAM\n");
3765 }
3766
3767 static void bluetooth_exit(void)
3768 {
3769 bluetooth_shutdown();
3770
3771 if (tpacpi_bluetooth_rfkill)
3772 rfkill_unregister(tpacpi_bluetooth_rfkill);
3773
3774 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3775 &bluetooth_attr_group);
3776 }
3777
3778 static int __init bluetooth_init(struct ibm_init_struct *iibm)
3779 {
3780 int res;
3781 int status = 0;
3782
3783 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3784 "initializing bluetooth subdriver\n");
3785
3786 TPACPI_ACPIHANDLE_INIT(hkey);
3787
3788 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3789 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
3790 tp_features.bluetooth = hkey_handle &&
3791 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
3792
3793 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3794 "bluetooth is %s, status 0x%02x\n",
3795 str_supported(tp_features.bluetooth),
3796 status);
3797
3798 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3799 if (dbg_bluetoothemul) {
3800 tp_features.bluetooth = 1;
3801 printk(TPACPI_INFO
3802 "bluetooth switch emulation enabled\n");
3803 } else
3804 #endif
3805 if (tp_features.bluetooth &&
3806 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
3807 /* no bluetooth hardware present in system */
3808 tp_features.bluetooth = 0;
3809 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3810 "bluetooth hardware not installed\n");
3811 }
3812
3813 if (!tp_features.bluetooth)
3814 return 1;
3815
3816 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3817 &bluetooth_attr_group);
3818 if (res)
3819 return res;
3820
3821 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
3822 &tpacpi_bluetooth_rfkill,
3823 RFKILL_TYPE_BLUETOOTH,
3824 TPACPI_RFK_BLUETOOTH_SW_NAME,
3825 true,
3826 tpacpi_bluetooth_rfk_set,
3827 tpacpi_bluetooth_rfk_get);
3828 if (res) {
3829 bluetooth_exit();
3830 return res;
3831 }
3832
3833 return 0;
3834 }
3835
3836 /* procfs -------------------------------------------------------------- */
3837 static int bluetooth_read(struct seq_file *m)
3838 {
3839 int status = bluetooth_get_radiosw();
3840
3841 if (!tp_features.bluetooth)
3842 seq_printf(m, "status:\t\tnot supported\n");
3843 else {
3844 seq_printf(m, "status:\t\t%s\n",
3845 (status == RFKILL_STATE_UNBLOCKED) ?
3846 "enabled" : "disabled");
3847 seq_printf(m, "commands:\tenable, disable\n");
3848 }
3849
3850 return 0;
3851 }
3852
3853 static int bluetooth_write(char *buf)
3854 {
3855 char *cmd;
3856 int state = -1;
3857
3858 if (!tp_features.bluetooth)
3859 return -ENODEV;
3860
3861 while ((cmd = next_cmd(&buf))) {
3862 if (strlencmp(cmd, "enable") == 0) {
3863 state = 1;
3864 } else if (strlencmp(cmd, "disable") == 0) {
3865 state = 0;
3866 } else
3867 return -EINVAL;
3868 }
3869
3870 if (state != -1) {
3871 tpacpi_disclose_usertask("procfs bluetooth",
3872 "attempt to %s\n",
3873 state ? "enable" : "disable");
3874 bluetooth_set_radiosw(state, 1);
3875 }
3876
3877 return 0;
3878 }
3879
3880 static struct ibm_struct bluetooth_driver_data = {
3881 .name = "bluetooth",
3882 .read = bluetooth_read,
3883 .write = bluetooth_write,
3884 .exit = bluetooth_exit,
3885 .suspend = bluetooth_suspend,
3886 .shutdown = bluetooth_shutdown,
3887 };
3888
3889 /*************************************************************************
3890 * Wan subdriver
3891 */
3892
3893 enum {
3894 /* ACPI GWAN/SWAN bits */
3895 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
3896 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
3897 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
3898 off / last state */
3899 };
3900
3901 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
3902
3903 static struct rfkill *tpacpi_wan_rfkill;
3904
3905 static void wan_suspend(pm_message_t state)
3906 {
3907 /* Try to make sure radio will resume powered off */
3908 if (!acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
3909 TP_ACPI_WGSV_PWR_OFF_ON_RESUME))
3910 vdbg_printk(TPACPI_DBG_RFKILL,
3911 "WWAN power down on resume request failed\n");
3912 }
3913
3914 static int wan_get_radiosw(void)
3915 {
3916 int status;
3917
3918 if (!tp_features.wan)
3919 return -ENODEV;
3920
3921 /* WLSW overrides WWAN in firmware/hardware, reflect that */
3922 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3923 return RFKILL_STATE_HARD_BLOCKED;
3924
3925 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3926 if (dbg_wwanemul)
3927 return (tpacpi_wwan_emulstate) ?
3928 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3929 #endif
3930
3931 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
3932 return -EIO;
3933
3934 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
3935 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3936 }
3937
3938 static void wan_update_rfk(void)
3939 {
3940 int status;
3941
3942 if (!tpacpi_wan_rfkill)
3943 return;
3944
3945 status = wan_get_radiosw();
3946 if (status < 0)
3947 return;
3948 rfkill_force_state(tpacpi_wan_rfkill, status);
3949
3950 vdbg_printk(TPACPI_DBG_RFKILL,
3951 "forced rfkill state to %d\n",
3952 status);
3953 }
3954
3955 static int wan_set_radiosw(int radio_on, int update_rfk)
3956 {
3957 int status;
3958
3959 if (!tp_features.wan)
3960 return -ENODEV;
3961
3962 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3963 * reason to risk weird behaviour. */
3964 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3965 && radio_on)
3966 return -EPERM;
3967
3968 vdbg_printk(TPACPI_DBG_RFKILL,
3969 "will %s WWAN\n", radio_on ? "enable" : "disable");
3970
3971 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3972 if (dbg_wwanemul) {
3973 tpacpi_wwan_emulstate = !!radio_on;
3974 if (update_rfk)
3975 wan_update_rfk();
3976 return 0;
3977 }
3978 #endif
3979
3980 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
3981 if (radio_on)
3982 status = TP_ACPI_WANCARD_RADIOSSW;
3983 else
3984 status = 0;
3985 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
3986 return -EIO;
3987
3988 if (update_rfk)
3989 wan_update_rfk();
3990
3991 return 0;
3992 }
3993
3994 /* sysfs wan enable ---------------------------------------------------- */
3995 static ssize_t wan_enable_show(struct device *dev,
3996 struct device_attribute *attr,
3997 char *buf)
3998 {
3999 int status;
4000
4001 printk_deprecated_rfkill_attribute("wwan_enable");
4002
4003 status = wan_get_radiosw();
4004 if (status < 0)
4005 return status;
4006
4007 return snprintf(buf, PAGE_SIZE, "%d\n",
4008 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
4009 }
4010
4011 static ssize_t wan_enable_store(struct device *dev,
4012 struct device_attribute *attr,
4013 const char *buf, size_t count)
4014 {
4015 unsigned long t;
4016 int res;
4017
4018 printk_deprecated_rfkill_attribute("wwan_enable");
4019
4020 if (parse_strtoul(buf, 1, &t))
4021 return -EINVAL;
4022
4023 tpacpi_disclose_usertask("wwan_enable", "set to %ld\n", t);
4024
4025 res = wan_set_radiosw(t, 1);
4026
4027 return (res) ? res : count;
4028 }
4029
4030 static struct device_attribute dev_attr_wan_enable =
4031 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
4032 wan_enable_show, wan_enable_store);
4033
4034 /* --------------------------------------------------------------------- */
4035
4036 static struct attribute *wan_attributes[] = {
4037 &dev_attr_wan_enable.attr,
4038 NULL
4039 };
4040
4041 static const struct attribute_group wan_attr_group = {
4042 .attrs = wan_attributes,
4043 };
4044
4045 static int tpacpi_wan_rfk_get(void *data, enum rfkill_state *state)
4046 {
4047 int wans = wan_get_radiosw();
4048
4049 if (wans < 0)
4050 return wans;
4051
4052 *state = wans;
4053 return 0;
4054 }
4055
4056 static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
4057 {
4058 dbg_printk(TPACPI_DBG_RFKILL,
4059 "request to change radio state to %d\n", state);
4060 return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
4061 }
4062
4063 static void wan_shutdown(void)
4064 {
4065 /* Order firmware to save current state to NVRAM */
4066 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
4067 TP_ACPI_WGSV_SAVE_STATE))
4068 printk(TPACPI_NOTICE
4069 "failed to save WWAN state to NVRAM\n");
4070 else
4071 vdbg_printk(TPACPI_DBG_RFKILL,
4072 "WWAN state saved to NVRAM\n");
4073 }
4074
4075 static void wan_exit(void)
4076 {
4077 wan_shutdown();
4078
4079 if (tpacpi_wan_rfkill)
4080 rfkill_unregister(tpacpi_wan_rfkill);
4081
4082 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
4083 &wan_attr_group);
4084 }
4085
4086 static int __init wan_init(struct ibm_init_struct *iibm)
4087 {
4088 int res;
4089 int status = 0;
4090
4091 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4092 "initializing wan subdriver\n");
4093
4094 TPACPI_ACPIHANDLE_INIT(hkey);
4095
4096 tp_features.wan = hkey_handle &&
4097 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
4098
4099 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4100 "wan is %s, status 0x%02x\n",
4101 str_supported(tp_features.wan),
4102 status);
4103
4104 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4105 if (dbg_wwanemul) {
4106 tp_features.wan = 1;
4107 printk(TPACPI_INFO
4108 "wwan switch emulation enabled\n");
4109 } else
4110 #endif
4111 if (tp_features.wan &&
4112 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
4113 /* no wan hardware present in system */
4114 tp_features.wan = 0;
4115 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4116 "wan hardware not installed\n");
4117 }
4118
4119 if (!tp_features.wan)
4120 return 1;
4121
4122 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
4123 &wan_attr_group);
4124 if (res)
4125 return res;
4126
4127 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
4128 &tpacpi_wan_rfkill,
4129 RFKILL_TYPE_WWAN,
4130 TPACPI_RFK_WWAN_SW_NAME,
4131 true,
4132 tpacpi_wan_rfk_set,
4133 tpacpi_wan_rfk_get);
4134 if (res) {
4135 wan_exit();
4136 return res;
4137 }
4138
4139 return 0;
4140 }
4141
4142 /* procfs -------------------------------------------------------------- */
4143 static int wan_read(struct seq_file *m)
4144 {
4145 int status = wan_get_radiosw();
4146
4147 tpacpi_disclose_usertask("procfs wan", "read");
4148
4149 if (!tp_features.wan)
4150 seq_printf(m, "status:\t\tnot supported\n");
4151 else {
4152 seq_printf(m, "status:\t\t%s\n",
4153 (status == RFKILL_STATE_UNBLOCKED) ?
4154 "enabled" : "disabled");
4155 seq_printf(m, "commands:\tenable, disable\n");
4156 }
4157
4158 return 0;
4159 }
4160
4161 static int wan_write(char *buf)
4162 {
4163 char *cmd;
4164 int state = -1;
4165
4166 if (!tp_features.wan)
4167 return -ENODEV;
4168
4169 while ((cmd = next_cmd(&buf))) {
4170 if (strlencmp(cmd, "enable") == 0) {
4171 state = 1;
4172 } else if (strlencmp(cmd, "disable") == 0) {
4173 state = 0;
4174 } else
4175 return -EINVAL;
4176 }
4177
4178 if (state != -1) {
4179 tpacpi_disclose_usertask("procfs wan",
4180 "attempt to %s\n",
4181 state ? "enable" : "disable");
4182 wan_set_radiosw(state, 1);
4183 }
4184
4185 return 0;
4186 }
4187
4188 static struct ibm_struct wan_driver_data = {
4189 .name = "wan",
4190 .read = wan_read,
4191 .write = wan_write,
4192 .exit = wan_exit,
4193 .suspend = wan_suspend,
4194 .shutdown = wan_shutdown,
4195 };
4196
4197 /*************************************************************************
4198 * UWB subdriver
4199 */
4200
4201 enum {
4202 /* ACPI GUWB/SUWB bits */
4203 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
4204 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
4205 };
4206
4207 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
4208
4209 static struct rfkill *tpacpi_uwb_rfkill;
4210
4211 static int uwb_get_radiosw(void)
4212 {
4213 int status;
4214
4215 if (!tp_features.uwb)
4216 return -ENODEV;
4217
4218 /* WLSW overrides UWB in firmware/hardware, reflect that */
4219 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
4220 return RFKILL_STATE_HARD_BLOCKED;
4221
4222 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4223 if (dbg_uwbemul)
4224 return (tpacpi_uwb_emulstate) ?
4225 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
4226 #endif
4227
4228 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
4229 return -EIO;
4230
4231 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
4232 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
4233 }
4234
4235 static void uwb_update_rfk(void)
4236 {
4237 int status;
4238
4239 if (!tpacpi_uwb_rfkill)
4240 return;
4241
4242 status = uwb_get_radiosw();
4243 if (status < 0)
4244 return;
4245 rfkill_force_state(tpacpi_uwb_rfkill, status);
4246
4247 vdbg_printk(TPACPI_DBG_RFKILL,
4248 "forced rfkill state to %d\n",
4249 status);
4250 }
4251
4252 static int uwb_set_radiosw(int radio_on, int update_rfk)
4253 {
4254 int status;
4255
4256 if (!tp_features.uwb)
4257 return -ENODEV;
4258
4259 /* WLSW overrides UWB in firmware/hardware, but there is no
4260 * reason to risk weird behaviour. */
4261 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
4262 && radio_on)
4263 return -EPERM;
4264
4265 vdbg_printk(TPACPI_DBG_RFKILL,
4266 "will %s UWB\n", radio_on ? "enable" : "disable");
4267
4268 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4269 if (dbg_uwbemul) {
4270 tpacpi_uwb_emulstate = !!radio_on;
4271 if (update_rfk)
4272 uwb_update_rfk();
4273 return 0;
4274 }
4275 #endif
4276
4277 status = (radio_on) ? TP_ACPI_UWB_RADIOSSW : 0;
4278 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
4279 return -EIO;
4280
4281 if (update_rfk)
4282 uwb_update_rfk();
4283
4284 return 0;
4285 }
4286
4287 /* --------------------------------------------------------------------- */
4288
4289 static int tpacpi_uwb_rfk_get(void *data, enum rfkill_state *state)
4290 {
4291 int uwbs = uwb_get_radiosw();
4292
4293 if (uwbs < 0)
4294 return uwbs;
4295
4296 *state = uwbs;
4297 return 0;
4298 }
4299
4300 static int tpacpi_uwb_rfk_set(void *data, enum rfkill_state state)
4301 {
4302 dbg_printk(TPACPI_DBG_RFKILL,
4303 "request to change radio state to %d\n", state);
4304 return uwb_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
4305 }
4306
4307 static void uwb_exit(void)
4308 {
4309 if (tpacpi_uwb_rfkill)
4310 rfkill_unregister(tpacpi_uwb_rfkill);
4311 }
4312
4313 static int __init uwb_init(struct ibm_init_struct *iibm)
4314 {
4315 int res;
4316 int status = 0;
4317
4318 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4319 "initializing uwb subdriver\n");
4320
4321 TPACPI_ACPIHANDLE_INIT(hkey);
4322
4323 tp_features.uwb = hkey_handle &&
4324 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
4325
4326 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
4327 "uwb is %s, status 0x%02x\n",
4328 str_supported(tp_features.uwb),
4329 status);
4330
4331 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
4332 if (dbg_uwbemul) {
4333 tp_features.uwb = 1;
4334 printk(TPACPI_INFO
4335 "uwb switch emulation enabled\n");
4336 } else
4337 #endif
4338 if (tp_features.uwb &&
4339 !(status & TP_ACPI_UWB_HWPRESENT)) {
4340 /* no uwb hardware present in system */
4341 tp_features.uwb = 0;
4342 dbg_printk(TPACPI_DBG_INIT,
4343 "uwb hardware not installed\n");
4344 }
4345
4346 if (!tp_features.uwb)
4347 return 1;
4348
4349 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
4350 &tpacpi_uwb_rfkill,
4351 RFKILL_TYPE_UWB,
4352 TPACPI_RFK_UWB_SW_NAME,
4353 false,
4354 tpacpi_uwb_rfk_set,
4355 tpacpi_uwb_rfk_get);
4356
4357 return res;
4358 }
4359
4360 static struct ibm_struct uwb_driver_data = {
4361 .name = "uwb",
4362 .exit = uwb_exit,
4363 .flags.experimental = 1,
4364 };
4365
4366 /*************************************************************************
4367 * Video subdriver
4368 */
4369
4370 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
4371
4372 enum video_access_mode {
4373 TPACPI_VIDEO_NONE = 0,
4374 TPACPI_VIDEO_570, /* 570 */
4375 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
4376 TPACPI_VIDEO_NEW, /* all others */
4377 };
4378
4379 enum { /* video status flags, based on VIDEO_570 */
4380 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
4381 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
4382 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
4383 };
4384
4385 enum { /* TPACPI_VIDEO_570 constants */
4386 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
4387 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
4388 * video_status_flags */
4389 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
4390 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
4391 };
4392
4393 static enum video_access_mode video_supported;
4394 static int video_orig_autosw;
4395
4396 static int video_autosw_get(void);
4397 static int video_autosw_set(int enable);
4398
4399 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
4400
4401 static int __init video_init(struct ibm_init_struct *iibm)
4402 {
4403 int ivga;
4404
4405 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
4406
4407 TPACPI_ACPIHANDLE_INIT(vid);
4408 TPACPI_ACPIHANDLE_INIT(vid2);
4409
4410 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
4411 /* G41, assume IVGA doesn't change */
4412 vid_handle = vid2_handle;
4413
4414 if (!vid_handle)
4415 /* video switching not supported on R30, R31 */
4416 video_supported = TPACPI_VIDEO_NONE;
4417 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
4418 /* 570 */
4419 video_supported = TPACPI_VIDEO_570;
4420 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
4421 /* 600e/x, 770e, 770x */
4422 video_supported = TPACPI_VIDEO_770;
4423 else
4424 /* all others */
4425 video_supported = TPACPI_VIDEO_NEW;
4426
4427 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
4428 str_supported(video_supported != TPACPI_VIDEO_NONE),
4429 video_supported);
4430
4431 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
4432 }
4433
4434 static void video_exit(void)
4435 {
4436 dbg_printk(TPACPI_DBG_EXIT,
4437 "restoring original video autoswitch mode\n");
4438 if (video_autosw_set(video_orig_autosw))
4439 printk(TPACPI_ERR "error while trying to restore original "
4440 "video autoswitch mode\n");
4441 }
4442
4443 static int video_outputsw_get(void)
4444 {
4445 int status = 0;
4446 int i;
4447
4448 switch (video_supported) {
4449 case TPACPI_VIDEO_570:
4450 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
4451 TP_ACPI_VIDEO_570_PHSCMD))
4452 return -EIO;
4453 status = i & TP_ACPI_VIDEO_570_PHSMASK;
4454 break;
4455 case TPACPI_VIDEO_770:
4456 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
4457 return -EIO;
4458 if (i)
4459 status |= TP_ACPI_VIDEO_S_LCD;
4460 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
4461 return -EIO;
4462 if (i)
4463 status |= TP_ACPI_VIDEO_S_CRT;
4464 break;
4465 case TPACPI_VIDEO_NEW:
4466 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
4467 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
4468 return -EIO;
4469 if (i)
4470 status |= TP_ACPI_VIDEO_S_CRT;
4471
4472 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
4473 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
4474 return -EIO;
4475 if (i)
4476 status |= TP_ACPI_VIDEO_S_LCD;
4477 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
4478 return -EIO;
4479 if (i)
4480 status |= TP_ACPI_VIDEO_S_DVI;
4481 break;
4482 default:
4483 return -ENOSYS;
4484 }
4485
4486 return status;
4487 }
4488
4489 static int video_outputsw_set(int status)
4490 {
4491 int autosw;
4492 int res = 0;
4493
4494 switch (video_supported) {
4495 case TPACPI_VIDEO_570:
4496 res = acpi_evalf(NULL, NULL,
4497 "\\_SB.PHS2", "vdd",
4498 TP_ACPI_VIDEO_570_PHS2CMD,
4499 status | TP_ACPI_VIDEO_570_PHS2SET);
4500 break;
4501 case TPACPI_VIDEO_770:
4502 autosw = video_autosw_get();
4503 if (autosw < 0)
4504 return autosw;
4505
4506 res = video_autosw_set(1);
4507 if (res)
4508 return res;
4509 res = acpi_evalf(vid_handle, NULL,
4510 "ASWT", "vdd", status * 0x100, 0);
4511 if (!autosw && video_autosw_set(autosw)) {
4512 printk(TPACPI_ERR
4513 "video auto-switch left enabled due to error\n");
4514 return -EIO;
4515 }
4516 break;
4517 case TPACPI_VIDEO_NEW:
4518 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
4519 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
4520 break;
4521 default:
4522 return -ENOSYS;
4523 }
4524
4525 return (res)? 0 : -EIO;
4526 }
4527
4528 static int video_autosw_get(void)
4529 {
4530 int autosw = 0;
4531
4532 switch (video_supported) {
4533 case TPACPI_VIDEO_570:
4534 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4535 return -EIO;
4536 break;
4537 case TPACPI_VIDEO_770:
4538 case TPACPI_VIDEO_NEW:
4539 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4540 return -EIO;
4541 break;
4542 default:
4543 return -ENOSYS;
4544 }
4545
4546 return autosw & 1;
4547 }
4548
4549 static int video_autosw_set(int enable)
4550 {
4551 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4552 return -EIO;
4553 return 0;
4554 }
4555
4556 static int video_outputsw_cycle(void)
4557 {
4558 int autosw = video_autosw_get();
4559 int res;
4560
4561 if (autosw < 0)
4562 return autosw;
4563
4564 switch (video_supported) {
4565 case TPACPI_VIDEO_570:
4566 res = video_autosw_set(1);
4567 if (res)
4568 return res;
4569 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4570 break;
4571 case TPACPI_VIDEO_770:
4572 case TPACPI_VIDEO_NEW:
4573 res = video_autosw_set(1);
4574 if (res)
4575 return res;
4576 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4577 break;
4578 default:
4579 return -ENOSYS;
4580 }
4581 if (!autosw && video_autosw_set(autosw)) {
4582 printk(TPACPI_ERR
4583 "video auto-switch left enabled due to error\n");
4584 return -EIO;
4585 }
4586
4587 return (res)? 0 : -EIO;
4588 }
4589
4590 static int video_expand_toggle(void)
4591 {
4592 switch (video_supported) {
4593 case TPACPI_VIDEO_570:
4594 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4595 0 : -EIO;
4596 case TPACPI_VIDEO_770:
4597 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4598 0 : -EIO;
4599 case TPACPI_VIDEO_NEW:
4600 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4601 0 : -EIO;
4602 default:
4603 return -ENOSYS;
4604 }
4605 /* not reached */
4606 }
4607
4608 static int video_read(struct seq_file *m)
4609 {
4610 int status, autosw;
4611
4612 if (video_supported == TPACPI_VIDEO_NONE) {
4613 seq_printf(m, "status:\t\tnot supported\n");
4614 return 0;
4615 }
4616
4617 status = video_outputsw_get();
4618 if (status < 0)
4619 return status;
4620
4621 autosw = video_autosw_get();
4622 if (autosw < 0)
4623 return autosw;
4624
4625 seq_printf(m, "status:\t\tsupported\n");
4626 seq_printf(m, "lcd:\t\t%s\n", enabled(status, 0));
4627 seq_printf(m, "crt:\t\t%s\n", enabled(status, 1));
4628 if (video_supported == TPACPI_VIDEO_NEW)
4629 seq_printf(m, "dvi:\t\t%s\n", enabled(status, 3));
4630 seq_printf(m, "auto:\t\t%s\n", enabled(autosw, 0));
4631 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n");
4632 seq_printf(m, "commands:\tcrt_enable, crt_disable\n");
4633 if (video_supported == TPACPI_VIDEO_NEW)
4634 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n");
4635 seq_printf(m, "commands:\tauto_enable, auto_disable\n");
4636 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n");
4637
4638 return 0;
4639 }
4640
4641 static int video_write(char *buf)
4642 {
4643 char *cmd;
4644 int enable, disable, status;
4645 int res;
4646
4647 if (video_supported == TPACPI_VIDEO_NONE)
4648 return -ENODEV;
4649
4650 enable = 0;
4651 disable = 0;
4652
4653 while ((cmd = next_cmd(&buf))) {
4654 if (strlencmp(cmd, "lcd_enable") == 0) {
4655 enable |= TP_ACPI_VIDEO_S_LCD;
4656 } else if (strlencmp(cmd, "lcd_disable") == 0) {
4657 disable |= TP_ACPI_VIDEO_S_LCD;
4658 } else if (strlencmp(cmd, "crt_enable") == 0) {
4659 enable |= TP_ACPI_VIDEO_S_CRT;
4660 } else if (strlencmp(cmd, "crt_disable") == 0) {
4661 disable |= TP_ACPI_VIDEO_S_CRT;
4662 } else if (video_supported == TPACPI_VIDEO_NEW &&
4663 strlencmp(cmd, "dvi_enable") == 0) {
4664 enable |= TP_ACPI_VIDEO_S_DVI;
4665 } else if (video_supported == TPACPI_VIDEO_NEW &&
4666 strlencmp(cmd, "dvi_disable") == 0) {
4667 disable |= TP_ACPI_VIDEO_S_DVI;
4668 } else if (strlencmp(cmd, "auto_enable") == 0) {
4669 res = video_autosw_set(1);
4670 if (res)
4671 return res;
4672 } else if (strlencmp(cmd, "auto_disable") == 0) {
4673 res = video_autosw_set(0);
4674 if (res)
4675 return res;
4676 } else if (strlencmp(cmd, "video_switch") == 0) {
4677 res = video_outputsw_cycle();
4678 if (res)
4679 return res;
4680 } else if (strlencmp(cmd, "expand_toggle") == 0) {
4681 res = video_expand_toggle();
4682 if (res)
4683 return res;
4684 } else
4685 return -EINVAL;
4686 }
4687
4688 if (enable || disable) {
4689 status = video_outputsw_get();
4690 if (status < 0)
4691 return status;
4692 res = video_outputsw_set((status & ~disable) | enable);
4693 if (res)
4694 return res;
4695 }
4696
4697 return 0;
4698 }
4699
4700 static struct ibm_struct video_driver_data = {
4701 .name = "video",
4702 .read = video_read,
4703 .write = video_write,
4704 .exit = video_exit,
4705 };
4706
4707 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4708
4709 /*************************************************************************
4710 * Light (thinklight) subdriver
4711 */
4712
4713 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4714 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
4715
4716 static int light_get_status(void)
4717 {
4718 int status = 0;
4719
4720 if (tp_features.light_status) {
4721 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4722 return -EIO;
4723 return (!!status);
4724 }
4725
4726 return -ENXIO;
4727 }
4728
4729 static int light_set_status(int status)
4730 {
4731 int rc;
4732
4733 if (tp_features.light) {
4734 if (cmos_handle) {
4735 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4736 (status)?
4737 TP_CMOS_THINKLIGHT_ON :
4738 TP_CMOS_THINKLIGHT_OFF);
4739 } else {
4740 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4741 (status)? 1 : 0);
4742 }
4743 return (rc)? 0 : -EIO;
4744 }
4745
4746 return -ENXIO;
4747 }
4748
4749 static void light_set_status_worker(struct work_struct *work)
4750 {
4751 struct tpacpi_led_classdev *data =
4752 container_of(work, struct tpacpi_led_classdev, work);
4753
4754 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4755 light_set_status((data->new_state != TPACPI_LED_OFF));
4756 }
4757
4758 static void light_sysfs_set(struct led_classdev *led_cdev,
4759 enum led_brightness brightness)
4760 {
4761 struct tpacpi_led_classdev *data =
4762 container_of(led_cdev,
4763 struct tpacpi_led_classdev,
4764 led_classdev);
4765 data->new_state = (brightness != LED_OFF) ?
4766 TPACPI_LED_ON : TPACPI_LED_OFF;
4767 queue_work(tpacpi_wq, &data->work);
4768 }
4769
4770 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4771 {
4772 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4773 }
4774
4775 static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4776 .led_classdev = {
4777 .name = "tpacpi::thinklight",
4778 .brightness_set = &light_sysfs_set,
4779 .brightness_get = &light_sysfs_get,
4780 }
4781 };
4782
4783 static int __init light_init(struct ibm_init_struct *iibm)
4784 {
4785 int rc;
4786
4787 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4788
4789 TPACPI_ACPIHANDLE_INIT(ledb);
4790 TPACPI_ACPIHANDLE_INIT(lght);
4791 TPACPI_ACPIHANDLE_INIT(cmos);
4792 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
4793
4794 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4795 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
4796
4797 if (tp_features.light)
4798 /* light status not supported on
4799 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4800 tp_features.light_status =
4801 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
4802
4803 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4804 str_supported(tp_features.light),
4805 str_supported(tp_features.light_status));
4806
4807 if (!tp_features.light)
4808 return 1;
4809
4810 rc = led_classdev_register(&tpacpi_pdev->dev,
4811 &tpacpi_led_thinklight.led_classdev);
4812
4813 if (rc < 0) {
4814 tp_features.light = 0;
4815 tp_features.light_status = 0;
4816 } else {
4817 rc = 0;
4818 }
4819
4820 return rc;
4821 }
4822
4823 static void light_exit(void)
4824 {
4825 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4826 if (work_pending(&tpacpi_led_thinklight.work))
4827 flush_workqueue(tpacpi_wq);
4828 }
4829
4830 static int light_read(struct seq_file *m)
4831 {
4832 int status;
4833
4834 if (!tp_features.light) {
4835 seq_printf(m, "status:\t\tnot supported\n");
4836 } else if (!tp_features.light_status) {
4837 seq_printf(m, "status:\t\tunknown\n");
4838 seq_printf(m, "commands:\ton, off\n");
4839 } else {
4840 status = light_get_status();
4841 if (status < 0)
4842 return status;
4843 seq_printf(m, "status:\t\t%s\n", onoff(status, 0));
4844 seq_printf(m, "commands:\ton, off\n");
4845 }
4846
4847 return 0;
4848 }
4849
4850 static int light_write(char *buf)
4851 {
4852 char *cmd;
4853 int newstatus = 0;
4854
4855 if (!tp_features.light)
4856 return -ENODEV;
4857
4858 while ((cmd = next_cmd(&buf))) {
4859 if (strlencmp(cmd, "on") == 0) {
4860 newstatus = 1;
4861 } else if (strlencmp(cmd, "off") == 0) {
4862 newstatus = 0;
4863 } else
4864 return -EINVAL;
4865 }
4866
4867 return light_set_status(newstatus);
4868 }
4869
4870 static struct ibm_struct light_driver_data = {
4871 .name = "light",
4872 .read = light_read,
4873 .write = light_write,
4874 .exit = light_exit,
4875 };
4876
4877 /*************************************************************************
4878 * CMOS subdriver
4879 */
4880
4881 /* sysfs cmos_command -------------------------------------------------- */
4882 static ssize_t cmos_command_store(struct device *dev,
4883 struct device_attribute *attr,
4884 const char *buf, size_t count)
4885 {
4886 unsigned long cmos_cmd;
4887 int res;
4888
4889 if (parse_strtoul(buf, 21, &cmos_cmd))
4890 return -EINVAL;
4891
4892 res = issue_thinkpad_cmos_command(cmos_cmd);
4893 return (res)? res : count;
4894 }
4895
4896 static struct device_attribute dev_attr_cmos_command =
4897 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4898
4899 /* --------------------------------------------------------------------- */
4900
4901 static int __init cmos_init(struct ibm_init_struct *iibm)
4902 {
4903 int res;
4904
4905 vdbg_printk(TPACPI_DBG_INIT,
4906 "initializing cmos commands subdriver\n");
4907
4908 TPACPI_ACPIHANDLE_INIT(cmos);
4909
4910 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4911 str_supported(cmos_handle != NULL));
4912
4913 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4914 if (res)
4915 return res;
4916
4917 return (cmos_handle)? 0 : 1;
4918 }
4919
4920 static void cmos_exit(void)
4921 {
4922 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4923 }
4924
4925 static int cmos_read(struct seq_file *m)
4926 {
4927 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4928 R30, R31, T20-22, X20-21 */
4929 if (!cmos_handle)
4930 seq_printf(m, "status:\t\tnot supported\n");
4931 else {
4932 seq_printf(m, "status:\t\tsupported\n");
4933 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n");
4934 }
4935
4936 return 0;
4937 }
4938
4939 static int cmos_write(char *buf)
4940 {
4941 char *cmd;
4942 int cmos_cmd, res;
4943
4944 while ((cmd = next_cmd(&buf))) {
4945 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4946 cmos_cmd >= 0 && cmos_cmd <= 21) {
4947 /* cmos_cmd set */
4948 } else
4949 return -EINVAL;
4950
4951 res = issue_thinkpad_cmos_command(cmos_cmd);
4952 if (res)
4953 return res;
4954 }
4955
4956 return 0;
4957 }
4958
4959 static struct ibm_struct cmos_driver_data = {
4960 .name = "cmos",
4961 .read = cmos_read,
4962 .write = cmos_write,
4963 .exit = cmos_exit,
4964 };
4965
4966 /*************************************************************************
4967 * LED subdriver
4968 */
4969
4970 enum led_access_mode {
4971 TPACPI_LED_NONE = 0,
4972 TPACPI_LED_570, /* 570 */
4973 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4974 TPACPI_LED_NEW, /* all others */
4975 };
4976
4977 enum { /* For TPACPI_LED_OLD */
4978 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4979 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4980 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4981 };
4982
4983 static enum led_access_mode led_supported;
4984
4985 TPACPI_HANDLE(led, ec, "SLED", /* 570 */
4986 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4987 /* T20-22, X20-21 */
4988 "LED", /* all others */
4989 ); /* R30, R31 */
4990
4991 #define TPACPI_LED_NUMLEDS 16
4992 static struct tpacpi_led_classdev *tpacpi_leds;
4993 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
4994 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
4995 /* there's a limit of 19 chars + NULL before 2.6.26 */
4996 "tpacpi::power",
4997 "tpacpi:orange:batt",
4998 "tpacpi:green:batt",
4999 "tpacpi::dock_active",
5000 "tpacpi::bay_active",
5001 "tpacpi::dock_batt",
5002 "tpacpi::unknown_led",
5003 "tpacpi::standby",
5004 "tpacpi::dock_status1",
5005 "tpacpi::dock_status2",
5006 "tpacpi::unknown_led2",
5007 "tpacpi::unknown_led3",
5008 "tpacpi::thinkvantage",
5009 };
5010 #define TPACPI_SAFE_LEDS 0x1081U
5011
5012 static inline bool tpacpi_is_led_restricted(const unsigned int led)
5013 {
5014 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5015 return false;
5016 #else
5017 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
5018 #endif
5019 }
5020
5021 static int led_get_status(const unsigned int led)
5022 {
5023 int status;
5024 enum led_status_t led_s;
5025
5026 switch (led_supported) {
5027 case TPACPI_LED_570:
5028 if (!acpi_evalf(ec_handle,
5029 &status, "GLED", "dd", 1 << led))
5030 return -EIO;
5031 led_s = (status == 0)?
5032 TPACPI_LED_OFF :
5033 ((status == 1)?
5034 TPACPI_LED_ON :
5035 TPACPI_LED_BLINK);
5036 tpacpi_led_state_cache[led] = led_s;
5037 return led_s;
5038 default:
5039 return -ENXIO;
5040 }
5041
5042 /* not reached */
5043 }
5044
5045 static int led_set_status(const unsigned int led,
5046 const enum led_status_t ledstatus)
5047 {
5048 /* off, on, blink. Index is led_status_t */
5049 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
5050 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
5051
5052 int rc = 0;
5053
5054 switch (led_supported) {
5055 case TPACPI_LED_570:
5056 /* 570 */
5057 if (unlikely(led > 7))
5058 return -EINVAL;
5059 if (unlikely(tpacpi_is_led_restricted(led)))
5060 return -EPERM;
5061 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5062 (1 << led), led_sled_arg1[ledstatus]))
5063 rc = -EIO;
5064 break;
5065 case TPACPI_LED_OLD:
5066 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
5067 if (unlikely(led > 7))
5068 return -EINVAL;
5069 if (unlikely(tpacpi_is_led_restricted(led)))
5070 return -EPERM;
5071 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
5072 if (rc >= 0)
5073 rc = ec_write(TPACPI_LED_EC_HLBL,
5074 (ledstatus == TPACPI_LED_BLINK) << led);
5075 if (rc >= 0)
5076 rc = ec_write(TPACPI_LED_EC_HLCL,
5077 (ledstatus != TPACPI_LED_OFF) << led);
5078 break;
5079 case TPACPI_LED_NEW:
5080 /* all others */
5081 if (unlikely(led >= TPACPI_LED_NUMLEDS))
5082 return -EINVAL;
5083 if (unlikely(tpacpi_is_led_restricted(led)))
5084 return -EPERM;
5085 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
5086 led, led_led_arg1[ledstatus]))
5087 rc = -EIO;
5088 break;
5089 default:
5090 rc = -ENXIO;
5091 }
5092
5093 if (!rc)
5094 tpacpi_led_state_cache[led] = ledstatus;
5095
5096 return rc;
5097 }
5098
5099 static void led_set_status_worker(struct work_struct *work)
5100 {
5101 struct tpacpi_led_classdev *data =
5102 container_of(work, struct tpacpi_led_classdev, work);
5103
5104 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
5105 led_set_status(data->led, data->new_state);
5106 }
5107
5108 static void led_sysfs_set(struct led_classdev *led_cdev,
5109 enum led_brightness brightness)
5110 {
5111 struct tpacpi_led_classdev *data = container_of(led_cdev,
5112 struct tpacpi_led_classdev, led_classdev);
5113
5114 if (brightness == LED_OFF)
5115 data->new_state = TPACPI_LED_OFF;
5116 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
5117 data->new_state = TPACPI_LED_ON;
5118 else
5119 data->new_state = TPACPI_LED_BLINK;
5120
5121 queue_work(tpacpi_wq, &data->work);
5122 }
5123
5124 static int led_sysfs_blink_set(struct led_classdev *led_cdev,
5125 unsigned long *delay_on, unsigned long *delay_off)
5126 {
5127 struct tpacpi_led_classdev *data = container_of(led_cdev,
5128 struct tpacpi_led_classdev, led_classdev);
5129
5130 /* Can we choose the flash rate? */
5131 if (*delay_on == 0 && *delay_off == 0) {
5132 /* yes. set them to the hardware blink rate (1 Hz) */
5133 *delay_on = 500; /* ms */
5134 *delay_off = 500; /* ms */
5135 } else if ((*delay_on != 500) || (*delay_off != 500))
5136 return -EINVAL;
5137
5138 data->new_state = TPACPI_LED_BLINK;
5139 queue_work(tpacpi_wq, &data->work);
5140
5141 return 0;
5142 }
5143
5144 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
5145 {
5146 int rc;
5147
5148 struct tpacpi_led_classdev *data = container_of(led_cdev,
5149 struct tpacpi_led_classdev, led_classdev);
5150
5151 rc = led_get_status(data->led);
5152
5153 if (rc == TPACPI_LED_OFF || rc < 0)
5154 rc = LED_OFF; /* no error handling in led class :( */
5155 else
5156 rc = LED_FULL;
5157
5158 return rc;
5159 }
5160
5161 static void led_exit(void)
5162 {
5163 unsigned int i;
5164
5165 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5166 if (tpacpi_leds[i].led_classdev.name)
5167 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
5168 }
5169
5170 kfree(tpacpi_leds);
5171 }
5172
5173 static int __init tpacpi_init_led(unsigned int led)
5174 {
5175 int rc;
5176
5177 tpacpi_leds[led].led = led;
5178
5179 /* LEDs with no name don't get registered */
5180 if (!tpacpi_led_names[led])
5181 return 0;
5182
5183 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
5184 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
5185 if (led_supported == TPACPI_LED_570)
5186 tpacpi_leds[led].led_classdev.brightness_get =
5187 &led_sysfs_get;
5188
5189 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
5190
5191 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
5192
5193 rc = led_classdev_register(&tpacpi_pdev->dev,
5194 &tpacpi_leds[led].led_classdev);
5195 if (rc < 0)
5196 tpacpi_leds[led].led_classdev.name = NULL;
5197
5198 return rc;
5199 }
5200
5201 static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
5202 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
5203 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
5204 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
5205
5206 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
5207 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
5208 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
5209 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
5210 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
5211 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
5212 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
5213 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
5214
5215 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
5216 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
5217 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
5218 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
5219 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
5220
5221 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
5222 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
5223 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
5224 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
5225
5226 /* (1) - may have excess leds enabled on MSB */
5227
5228 /* Defaults (order matters, keep last, don't reorder!) */
5229 { /* Lenovo */
5230 .vendor = PCI_VENDOR_ID_LENOVO,
5231 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5232 .quirks = 0x1fffU,
5233 },
5234 { /* IBM ThinkPads with no EC version string */
5235 .vendor = PCI_VENDOR_ID_IBM,
5236 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
5237 .quirks = 0x00ffU,
5238 },
5239 { /* IBM ThinkPads with EC version string */
5240 .vendor = PCI_VENDOR_ID_IBM,
5241 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
5242 .quirks = 0x00bfU,
5243 },
5244 };
5245
5246 #undef TPACPI_LEDQ_IBM
5247 #undef TPACPI_LEDQ_LNV
5248
5249 static int __init led_init(struct ibm_init_struct *iibm)
5250 {
5251 unsigned int i;
5252 int rc;
5253 unsigned long useful_leds;
5254
5255 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
5256
5257 TPACPI_ACPIHANDLE_INIT(led);
5258
5259 if (!led_handle)
5260 /* led not supported on R30, R31 */
5261 led_supported = TPACPI_LED_NONE;
5262 else if (strlencmp(led_path, "SLED") == 0)
5263 /* 570 */
5264 led_supported = TPACPI_LED_570;
5265 else if (strlencmp(led_path, "SYSL") == 0)
5266 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
5267 led_supported = TPACPI_LED_OLD;
5268 else
5269 /* all others */
5270 led_supported = TPACPI_LED_NEW;
5271
5272 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
5273 str_supported(led_supported), led_supported);
5274
5275 if (led_supported == TPACPI_LED_NONE)
5276 return 1;
5277
5278 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
5279 GFP_KERNEL);
5280 if (!tpacpi_leds) {
5281 printk(TPACPI_ERR "Out of memory for LED data\n");
5282 return -ENOMEM;
5283 }
5284
5285 useful_leds = tpacpi_check_quirks(led_useful_qtable,
5286 ARRAY_SIZE(led_useful_qtable));
5287
5288 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
5289 if (!tpacpi_is_led_restricted(i) &&
5290 test_bit(i, &useful_leds)) {
5291 rc = tpacpi_init_led(i);
5292 if (rc < 0) {
5293 led_exit();
5294 return rc;
5295 }
5296 }
5297 }
5298
5299 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
5300 printk(TPACPI_NOTICE
5301 "warning: userspace override of important "
5302 "firmware LEDs is enabled\n");
5303 #endif
5304 return 0;
5305 }
5306
5307 #define str_led_status(s) \
5308 ((s) == TPACPI_LED_OFF ? "off" : \
5309 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
5310
5311 static int led_read(struct seq_file *m)
5312 {
5313 if (!led_supported) {
5314 seq_printf(m, "status:\t\tnot supported\n");
5315 return 0;
5316 }
5317 seq_printf(m, "status:\t\tsupported\n");
5318
5319 if (led_supported == TPACPI_LED_570) {
5320 /* 570 */
5321 int i, status;
5322 for (i = 0; i < 8; i++) {
5323 status = led_get_status(i);
5324 if (status < 0)
5325 return -EIO;
5326 seq_printf(m, "%d:\t\t%s\n",
5327 i, str_led_status(status));
5328 }
5329 }
5330
5331 seq_printf(m, "commands:\t"
5332 "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
5333
5334 return 0;
5335 }
5336
5337 static int led_write(char *buf)
5338 {
5339 char *cmd;
5340 int led, rc;
5341 enum led_status_t s;
5342
5343 if (!led_supported)
5344 return -ENODEV;
5345
5346 while ((cmd = next_cmd(&buf))) {
5347 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15)
5348 return -EINVAL;
5349
5350 if (strstr(cmd, "off")) {
5351 s = TPACPI_LED_OFF;
5352 } else if (strstr(cmd, "on")) {
5353 s = TPACPI_LED_ON;
5354 } else if (strstr(cmd, "blink")) {
5355 s = TPACPI_LED_BLINK;
5356 } else {
5357 return -EINVAL;
5358 }
5359
5360 rc = led_set_status(led, s);
5361 if (rc < 0)
5362 return rc;
5363 }
5364
5365 return 0;
5366 }
5367
5368 static struct ibm_struct led_driver_data = {
5369 .name = "led",
5370 .read = led_read,
5371 .write = led_write,
5372 .exit = led_exit,
5373 };
5374
5375 /*************************************************************************
5376 * Beep subdriver
5377 */
5378
5379 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
5380
5381 #define TPACPI_BEEP_Q1 0x0001
5382
5383 static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
5384 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
5385 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
5386 };
5387
5388 static int __init beep_init(struct ibm_init_struct *iibm)
5389 {
5390 unsigned long quirks;
5391
5392 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5393
5394 TPACPI_ACPIHANDLE_INIT(beep);
5395
5396 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5397 str_supported(beep_handle != NULL));
5398
5399 quirks = tpacpi_check_quirks(beep_quirk_table,
5400 ARRAY_SIZE(beep_quirk_table));
5401
5402 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
5403
5404 return (beep_handle)? 0 : 1;
5405 }
5406
5407 static int beep_read(struct seq_file *m)
5408 {
5409 if (!beep_handle)
5410 seq_printf(m, "status:\t\tnot supported\n");
5411 else {
5412 seq_printf(m, "status:\t\tsupported\n");
5413 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n");
5414 }
5415
5416 return 0;
5417 }
5418
5419 static int beep_write(char *buf)
5420 {
5421 char *cmd;
5422 int beep_cmd;
5423
5424 if (!beep_handle)
5425 return -ENODEV;
5426
5427 while ((cmd = next_cmd(&buf))) {
5428 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5429 beep_cmd >= 0 && beep_cmd <= 17) {
5430 /* beep_cmd set */
5431 } else
5432 return -EINVAL;
5433 if (tp_features.beep_needs_two_args) {
5434 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
5435 beep_cmd, 0))
5436 return -EIO;
5437 } else {
5438 if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
5439 beep_cmd))
5440 return -EIO;
5441 }
5442 }
5443
5444 return 0;
5445 }
5446
5447 static struct ibm_struct beep_driver_data = {
5448 .name = "beep",
5449 .read = beep_read,
5450 .write = beep_write,
5451 };
5452
5453 /*************************************************************************
5454 * Thermal subdriver
5455 */
5456
5457 enum thermal_access_mode {
5458 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5459 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5460 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5461 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5462 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5463 };
5464
5465 enum { /* TPACPI_THERMAL_TPEC_* */
5466 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5467 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5468 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
5469
5470 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
5471 };
5472
5473
5474 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5475 struct ibm_thermal_sensors_struct {
5476 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5477 };
5478
5479 static enum thermal_access_mode thermal_read_mode;
5480
5481 /* idx is zero-based */
5482 static int thermal_get_sensor(int idx, s32 *value)
5483 {
5484 int t;
5485 s8 tmp;
5486 char tmpi[5];
5487
5488 t = TP_EC_THERMAL_TMP0;
5489
5490 switch (thermal_read_mode) {
5491 #if TPACPI_MAX_THERMAL_SENSORS >= 16
5492 case TPACPI_THERMAL_TPEC_16:
5493 if (idx >= 8 && idx <= 15) {
5494 t = TP_EC_THERMAL_TMP8;
5495 idx -= 8;
5496 }
5497 /* fallthrough */
5498 #endif
5499 case TPACPI_THERMAL_TPEC_8:
5500 if (idx <= 7) {
5501 if (!acpi_ec_read(t + idx, &tmp))
5502 return -EIO;
5503 *value = tmp * 1000;
5504 return 0;
5505 }
5506 break;
5507
5508 case TPACPI_THERMAL_ACPI_UPDT:
5509 if (idx <= 7) {
5510 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5511 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5512 return -EIO;
5513 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5514 return -EIO;
5515 *value = (t - 2732) * 100;
5516 return 0;
5517 }
5518 break;
5519
5520 case TPACPI_THERMAL_ACPI_TMP07:
5521 if (idx <= 7) {
5522 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5523 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5524 return -EIO;
5525 if (t > 127 || t < -127)
5526 t = TP_EC_THERMAL_TMP_NA;
5527 *value = t * 1000;
5528 return 0;
5529 }
5530 break;
5531
5532 case TPACPI_THERMAL_NONE:
5533 default:
5534 return -ENOSYS;
5535 }
5536
5537 return -EINVAL;
5538 }
5539
5540 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5541 {
5542 int res, i;
5543 int n;
5544
5545 n = 8;
5546 i = 0;
5547
5548 if (!s)
5549 return -EINVAL;
5550
5551 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5552 n = 16;
5553
5554 for (i = 0 ; i < n; i++) {
5555 res = thermal_get_sensor(i, &s->temp[i]);
5556 if (res)
5557 return res;
5558 }
5559
5560 return n;
5561 }
5562
5563 static void thermal_dump_all_sensors(void)
5564 {
5565 int n, i;
5566 struct ibm_thermal_sensors_struct t;
5567
5568 n = thermal_get_sensors(&t);
5569 if (n <= 0)
5570 return;
5571
5572 printk(TPACPI_NOTICE
5573 "temperatures (Celsius):");
5574
5575 for (i = 0; i < n; i++) {
5576 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
5577 printk(KERN_CONT " %d", (int)(t.temp[i] / 1000));
5578 else
5579 printk(KERN_CONT " N/A");
5580 }
5581
5582 printk(KERN_CONT "\n");
5583 }
5584
5585 /* sysfs temp##_input -------------------------------------------------- */
5586
5587 static ssize_t thermal_temp_input_show(struct device *dev,
5588 struct device_attribute *attr,
5589 char *buf)
5590 {
5591 struct sensor_device_attribute *sensor_attr =
5592 to_sensor_dev_attr(attr);
5593 int idx = sensor_attr->index;
5594 s32 value;
5595 int res;
5596
5597 res = thermal_get_sensor(idx, &value);
5598 if (res)
5599 return res;
5600 if (value == TPACPI_THERMAL_SENSOR_NA)
5601 return -ENXIO;
5602
5603 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5604 }
5605
5606 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5607 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5608 thermal_temp_input_show, NULL, _idxB)
5609
5610 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5611 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5612 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5613 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5614 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5615 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5616 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5617 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5618 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5619 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5620 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5621 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5622 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5623 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5624 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5625 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5626 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5627 };
5628
5629 #define THERMAL_ATTRS(X) \
5630 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5631
5632 static struct attribute *thermal_temp_input_attr[] = {
5633 THERMAL_ATTRS(8),
5634 THERMAL_ATTRS(9),
5635 THERMAL_ATTRS(10),
5636 THERMAL_ATTRS(11),
5637 THERMAL_ATTRS(12),
5638 THERMAL_ATTRS(13),
5639 THERMAL_ATTRS(14),
5640 THERMAL_ATTRS(15),
5641 THERMAL_ATTRS(0),
5642 THERMAL_ATTRS(1),
5643 THERMAL_ATTRS(2),
5644 THERMAL_ATTRS(3),
5645 THERMAL_ATTRS(4),
5646 THERMAL_ATTRS(5),
5647 THERMAL_ATTRS(6),
5648 THERMAL_ATTRS(7),
5649 NULL
5650 };
5651
5652 static const struct attribute_group thermal_temp_input16_group = {
5653 .attrs = thermal_temp_input_attr
5654 };
5655
5656 static const struct attribute_group thermal_temp_input8_group = {
5657 .attrs = &thermal_temp_input_attr[8]
5658 };
5659
5660 #undef THERMAL_SENSOR_ATTR_TEMP
5661 #undef THERMAL_ATTRS
5662
5663 /* --------------------------------------------------------------------- */
5664
5665 static int __init thermal_init(struct ibm_init_struct *iibm)
5666 {
5667 u8 t, ta1, ta2;
5668 int i;
5669 int acpi_tmp7;
5670 int res;
5671
5672 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5673
5674 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
5675
5676 if (thinkpad_id.ec_model) {
5677 /*
5678 * Direct EC access mode: sensors at registers
5679 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5680 * non-implemented, thermal sensors return 0x80 when
5681 * not available
5682 */
5683
5684 ta1 = ta2 = 0;
5685 for (i = 0; i < 8; i++) {
5686 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
5687 ta1 |= t;
5688 } else {
5689 ta1 = 0;
5690 break;
5691 }
5692 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
5693 ta2 |= t;
5694 } else {
5695 ta1 = 0;
5696 break;
5697 }
5698 }
5699 if (ta1 == 0) {
5700 /* This is sheer paranoia, but we handle it anyway */
5701 if (acpi_tmp7) {
5702 printk(TPACPI_ERR
5703 "ThinkPad ACPI EC access misbehaving, "
5704 "falling back to ACPI TMPx access "
5705 "mode\n");
5706 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
5707 } else {
5708 printk(TPACPI_ERR
5709 "ThinkPad ACPI EC access misbehaving, "
5710 "disabling thermal sensors access\n");
5711 thermal_read_mode = TPACPI_THERMAL_NONE;
5712 }
5713 } else {
5714 thermal_read_mode =
5715 (ta2 != 0) ?
5716 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
5717 }
5718 } else if (acpi_tmp7) {
5719 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
5720 /* 600e/x, 770e, 770x */
5721 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
5722 } else {
5723 /* Standard ACPI TMPx access, max 8 sensors */
5724 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
5725 }
5726 } else {
5727 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5728 thermal_read_mode = TPACPI_THERMAL_NONE;
5729 }
5730
5731 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5732 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5733 thermal_read_mode);
5734
5735 switch (thermal_read_mode) {
5736 case TPACPI_THERMAL_TPEC_16:
5737 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5738 &thermal_temp_input16_group);
5739 if (res)
5740 return res;
5741 break;
5742 case TPACPI_THERMAL_TPEC_8:
5743 case TPACPI_THERMAL_ACPI_TMP07:
5744 case TPACPI_THERMAL_ACPI_UPDT:
5745 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5746 &thermal_temp_input8_group);
5747 if (res)
5748 return res;
5749 break;
5750 case TPACPI_THERMAL_NONE:
5751 default:
5752 return 1;
5753 }
5754
5755 return 0;
5756 }
5757
5758 static void thermal_exit(void)
5759 {
5760 switch (thermal_read_mode) {
5761 case TPACPI_THERMAL_TPEC_16:
5762 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
5763 &thermal_temp_input16_group);
5764 break;
5765 case TPACPI_THERMAL_TPEC_8:
5766 case TPACPI_THERMAL_ACPI_TMP07:
5767 case TPACPI_THERMAL_ACPI_UPDT:
5768 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
5769 &thermal_temp_input16_group);
5770 break;
5771 case TPACPI_THERMAL_NONE:
5772 default:
5773 break;
5774 }
5775 }
5776
5777 static int thermal_read(struct seq_file *m)
5778 {
5779 int n, i;
5780 struct ibm_thermal_sensors_struct t;
5781
5782 n = thermal_get_sensors(&t);
5783 if (unlikely(n < 0))
5784 return n;
5785
5786 seq_printf(m, "temperatures:\t");
5787
5788 if (n > 0) {
5789 for (i = 0; i < (n - 1); i++)
5790 seq_printf(m, "%d ", t.temp[i] / 1000);
5791 seq_printf(m, "%d\n", t.temp[i] / 1000);
5792 } else
5793 seq_printf(m, "not supported\n");
5794
5795 return 0;
5796 }
5797
5798 static struct ibm_struct thermal_driver_data = {
5799 .name = "thermal",
5800 .read = thermal_read,
5801 .exit = thermal_exit,
5802 };
5803
5804 /*************************************************************************
5805 * EC Dump subdriver
5806 */
5807
5808 static u8 ecdump_regs[256];
5809
5810 static int ecdump_read(struct seq_file *m)
5811 {
5812 int i, j;
5813 u8 v;
5814
5815 seq_printf(m, "EC "
5816 " +00 +01 +02 +03 +04 +05 +06 +07"
5817 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5818 for (i = 0; i < 256; i += 16) {
5819 seq_printf(m, "EC 0x%02x:", i);
5820 for (j = 0; j < 16; j++) {
5821 if (!acpi_ec_read(i + j, &v))
5822 break;
5823 if (v != ecdump_regs[i + j])
5824 seq_printf(m, " *%02x", v);
5825 else
5826 seq_printf(m, " %02x", v);
5827 ecdump_regs[i + j] = v;
5828 }
5829 seq_putc(m, '\n');
5830 if (j != 16)
5831 break;
5832 }
5833
5834 /* These are way too dangerous to advertise openly... */
5835 #if 0
5836 seq_printf(m, "commands:\t0x<offset> 0x<value>"
5837 " (<offset> is 00-ff, <value> is 00-ff)\n");
5838 seq_printf(m, "commands:\t0x<offset> <value> "
5839 " (<offset> is 00-ff, <value> is 0-255)\n");
5840 #endif
5841 return 0;
5842 }
5843
5844 static int ecdump_write(char *buf)
5845 {
5846 char *cmd;
5847 int i, v;
5848
5849 while ((cmd = next_cmd(&buf))) {
5850 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5851 /* i and v set */
5852 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5853 /* i and v set */
5854 } else
5855 return -EINVAL;
5856 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5857 if (!acpi_ec_write(i, v))
5858 return -EIO;
5859 } else
5860 return -EINVAL;
5861 }
5862
5863 return 0;
5864 }
5865
5866 static struct ibm_struct ecdump_driver_data = {
5867 .name = "ecdump",
5868 .read = ecdump_read,
5869 .write = ecdump_write,
5870 .flags.experimental = 1,
5871 };
5872
5873 /*************************************************************************
5874 * Backlight/brightness subdriver
5875 */
5876
5877 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5878
5879 /*
5880 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5881 * CMOS NVRAM byte 0x5E, bits 0-3.
5882 *
5883 * EC HBRV (0x31) has the following layout
5884 * Bit 7: unknown function
5885 * Bit 6: unknown function
5886 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5887 * Bit 4: must be set to zero to avoid problems
5888 * Bit 3-0: backlight brightness level
5889 *
5890 * brightness_get_raw returns status data in the HBRV layout
5891 *
5892 * WARNING: The X61 has been verified to use HBRV for something else, so
5893 * this should be used _only_ on IBM ThinkPads, and maybe with some careful
5894 * testing on the very early *60 Lenovo models...
5895 */
5896
5897 enum {
5898 TP_EC_BACKLIGHT = 0x31,
5899
5900 /* TP_EC_BACKLIGHT bitmasks */
5901 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5902 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5903 TP_EC_BACKLIGHT_MAPSW = 0x20,
5904 };
5905
5906 enum tpacpi_brightness_access_mode {
5907 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
5908 TPACPI_BRGHT_MODE_EC, /* EC control */
5909 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
5910 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
5911 TPACPI_BRGHT_MODE_MAX
5912 };
5913
5914 static struct backlight_device *ibm_backlight_device;
5915
5916 static enum tpacpi_brightness_access_mode brightness_mode =
5917 TPACPI_BRGHT_MODE_MAX;
5918
5919 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5920
5921 static struct mutex brightness_mutex;
5922
5923 /* NVRAM brightness access,
5924 * call with brightness_mutex held! */
5925 static unsigned int tpacpi_brightness_nvram_get(void)
5926 {
5927 u8 lnvram;
5928
5929 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5930 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5931 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
5932 lnvram &= (tp_features.bright_16levels) ? 0x0f : 0x07;
5933
5934 return lnvram;
5935 }
5936
5937 static void tpacpi_brightness_checkpoint_nvram(void)
5938 {
5939 u8 lec = 0;
5940 u8 b_nvram;
5941
5942 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
5943 return;
5944
5945 vdbg_printk(TPACPI_DBG_BRGHT,
5946 "trying to checkpoint backlight level to NVRAM...\n");
5947
5948 if (mutex_lock_killable(&brightness_mutex) < 0)
5949 return;
5950
5951 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5952 goto unlock;
5953 lec &= TP_EC_BACKLIGHT_LVLMSK;
5954 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
5955
5956 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5957 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
5958 /* NVRAM needs update */
5959 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
5960 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
5961 b_nvram |= lec;
5962 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
5963 dbg_printk(TPACPI_DBG_BRGHT,
5964 "updated NVRAM backlight level to %u (0x%02x)\n",
5965 (unsigned int) lec, (unsigned int) b_nvram);
5966 } else
5967 vdbg_printk(TPACPI_DBG_BRGHT,
5968 "NVRAM backlight level already is %u (0x%02x)\n",
5969 (unsigned int) lec, (unsigned int) b_nvram);
5970
5971 unlock:
5972 mutex_unlock(&brightness_mutex);
5973 }
5974
5975
5976 /* call with brightness_mutex held! */
5977 static int tpacpi_brightness_get_raw(int *status)
5978 {
5979 u8 lec = 0;
5980
5981 switch (brightness_mode) {
5982 case TPACPI_BRGHT_MODE_UCMS_STEP:
5983 *status = tpacpi_brightness_nvram_get();
5984 return 0;
5985 case TPACPI_BRGHT_MODE_EC:
5986 case TPACPI_BRGHT_MODE_ECNVRAM:
5987 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5988 return -EIO;
5989 *status = lec;
5990 return 0;
5991 default:
5992 return -ENXIO;
5993 }
5994 }
5995
5996 /* call with brightness_mutex held! */
5997 /* do NOT call with illegal backlight level value */
5998 static int tpacpi_brightness_set_ec(unsigned int value)
5999 {
6000 u8 lec = 0;
6001
6002 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
6003 return -EIO;
6004
6005 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
6006 (lec & TP_EC_BACKLIGHT_CMDMSK) |
6007 (value & TP_EC_BACKLIGHT_LVLMSK))))
6008 return -EIO;
6009
6010 return 0;
6011 }
6012
6013 /* call with brightness_mutex held! */
6014 static int tpacpi_brightness_set_ucmsstep(unsigned int value)
6015 {
6016 int cmos_cmd, inc;
6017 unsigned int current_value, i;
6018
6019 current_value = tpacpi_brightness_nvram_get();
6020
6021 if (value == current_value)
6022 return 0;
6023
6024 cmos_cmd = (value > current_value) ?
6025 TP_CMOS_BRIGHTNESS_UP :
6026 TP_CMOS_BRIGHTNESS_DOWN;
6027 inc = (value > current_value) ? 1 : -1;
6028
6029 for (i = current_value; i != value; i += inc)
6030 if (issue_thinkpad_cmos_command(cmos_cmd))
6031 return -EIO;
6032
6033 return 0;
6034 }
6035
6036 /* May return EINTR which can always be mapped to ERESTARTSYS */
6037 static int brightness_set(unsigned int value)
6038 {
6039 int res;
6040
6041 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
6042 value < 0)
6043 return -EINVAL;
6044
6045 vdbg_printk(TPACPI_DBG_BRGHT,
6046 "set backlight level to %d\n", value);
6047
6048 res = mutex_lock_killable(&brightness_mutex);
6049 if (res < 0)
6050 return res;
6051
6052 switch (brightness_mode) {
6053 case TPACPI_BRGHT_MODE_EC:
6054 case TPACPI_BRGHT_MODE_ECNVRAM:
6055 res = tpacpi_brightness_set_ec(value);
6056 break;
6057 case TPACPI_BRGHT_MODE_UCMS_STEP:
6058 res = tpacpi_brightness_set_ucmsstep(value);
6059 break;
6060 default:
6061 res = -ENXIO;
6062 }
6063
6064 mutex_unlock(&brightness_mutex);
6065 return res;
6066 }
6067
6068 /* sysfs backlight class ----------------------------------------------- */
6069
6070 static int brightness_update_status(struct backlight_device *bd)
6071 {
6072 unsigned int level =
6073 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
6074 bd->props.power == FB_BLANK_UNBLANK) ?
6075 bd->props.brightness : 0;
6076
6077 dbg_printk(TPACPI_DBG_BRGHT,
6078 "backlight: attempt to set level to %d\n",
6079 level);
6080
6081 /* it is the backlight class's job (caller) to handle
6082 * EINTR and other errors properly */
6083 return brightness_set(level);
6084 }
6085
6086 static int brightness_get(struct backlight_device *bd)
6087 {
6088 int status, res;
6089
6090 res = mutex_lock_killable(&brightness_mutex);
6091 if (res < 0)
6092 return 0;
6093
6094 res = tpacpi_brightness_get_raw(&status);
6095
6096 mutex_unlock(&brightness_mutex);
6097
6098 if (res < 0)
6099 return 0;
6100
6101 return status & TP_EC_BACKLIGHT_LVLMSK;
6102 }
6103
6104 static void tpacpi_brightness_notify_change(void)
6105 {
6106 backlight_force_update(ibm_backlight_device,
6107 BACKLIGHT_UPDATE_HOTKEY);
6108 }
6109
6110 static struct backlight_ops ibm_backlight_data = {
6111 .get_brightness = brightness_get,
6112 .update_status = brightness_update_status,
6113 };
6114
6115 /* --------------------------------------------------------------------- */
6116
6117 /*
6118 * These are only useful for models that have only one possibility
6119 * of GPU. If the BIOS model handles both ATI and Intel, don't use
6120 * these quirks.
6121 */
6122 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */
6123 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */
6124 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */
6125
6126 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = {
6127 /* Models with ATI GPUs known to require ECNVRAM mode */
6128 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */
6129
6130 /* Models with ATI GPUs that can use ECNVRAM */
6131 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC),
6132 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6133 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6134 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6135
6136 /* Models with Intel Extreme Graphics 2 */
6137 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC),
6138 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6139 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC),
6140
6141 /* Models with Intel GMA900 */
6142 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */
6143 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */
6144 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */
6145 };
6146
6147 static int __init brightness_init(struct ibm_init_struct *iibm)
6148 {
6149 int b;
6150 unsigned long quirks;
6151
6152 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
6153
6154 mutex_init(&brightness_mutex);
6155
6156 quirks = tpacpi_check_quirks(brightness_quirk_table,
6157 ARRAY_SIZE(brightness_quirk_table));
6158
6159 /*
6160 * We always attempt to detect acpi support, so as to switch
6161 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
6162 * going to publish a backlight interface
6163 */
6164 b = tpacpi_check_std_acpi_brightness_support();
6165 if (b > 0) {
6166
6167 if (acpi_video_backlight_support()) {
6168 if (brightness_enable > 1) {
6169 printk(TPACPI_NOTICE
6170 "Standard ACPI backlight interface "
6171 "available, not loading native one.\n");
6172 return 1;
6173 } else if (brightness_enable == 1) {
6174 printk(TPACPI_NOTICE
6175 "Backlight control force enabled, even if standard "
6176 "ACPI backlight interface is available\n");
6177 }
6178 } else {
6179 if (brightness_enable > 1) {
6180 printk(TPACPI_NOTICE
6181 "Standard ACPI backlight interface not "
6182 "available, thinkpad_acpi native "
6183 "brightness control enabled\n");
6184 }
6185 }
6186 }
6187
6188 if (!brightness_enable) {
6189 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6190 "brightness support disabled by "
6191 "module parameter\n");
6192 return 1;
6193 }
6194
6195 if (b > 16) {
6196 printk(TPACPI_ERR
6197 "Unsupported brightness interface, "
6198 "please contact %s\n", TPACPI_MAIL);
6199 return 1;
6200 }
6201 if (b == 16)
6202 tp_features.bright_16levels = 1;
6203
6204 /*
6205 * Check for module parameter bogosity, note that we
6206 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
6207 * able to detect "unspecified"
6208 */
6209 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
6210 return -EINVAL;
6211
6212 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
6213 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
6214 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
6215 if (quirks & TPACPI_BRGHT_Q_EC)
6216 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
6217 else
6218 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
6219
6220 dbg_printk(TPACPI_DBG_BRGHT,
6221 "driver auto-selected brightness_mode=%d\n",
6222 brightness_mode);
6223 }
6224
6225 /* Safety */
6226 if (thinkpad_id.vendor != PCI_VENDOR_ID_IBM &&
6227 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
6228 brightness_mode == TPACPI_BRGHT_MODE_EC))
6229 return -EINVAL;
6230
6231 if (tpacpi_brightness_get_raw(&b) < 0)
6232 return 1;
6233
6234 if (tp_features.bright_16levels)
6235 printk(TPACPI_INFO
6236 "detected a 16-level brightness capable ThinkPad\n");
6237
6238 ibm_backlight_device = backlight_device_register(
6239 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
6240 &ibm_backlight_data);
6241 if (IS_ERR(ibm_backlight_device)) {
6242 int rc = PTR_ERR(ibm_backlight_device);
6243 ibm_backlight_device = NULL;
6244 printk(TPACPI_ERR "Could not register backlight device\n");
6245 return rc;
6246 }
6247 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6248 "brightness is supported\n");
6249
6250 if (quirks & TPACPI_BRGHT_Q_ASK) {
6251 printk(TPACPI_NOTICE
6252 "brightness: will use unverified default: "
6253 "brightness_mode=%d\n", brightness_mode);
6254 printk(TPACPI_NOTICE
6255 "brightness: please report to %s whether it works well "
6256 "or not on your ThinkPad\n", TPACPI_MAIL);
6257 }
6258
6259 ibm_backlight_device->props.max_brightness =
6260 (tp_features.bright_16levels)? 15 : 7;
6261 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
6262 backlight_update_status(ibm_backlight_device);
6263
6264 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
6265 "brightness: registering brightness hotkeys "
6266 "as change notification\n");
6267 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6268 | TP_ACPI_HKEY_BRGHTUP_MASK
6269 | TP_ACPI_HKEY_BRGHTDWN_MASK);;
6270 return 0;
6271 }
6272
6273 static void brightness_suspend(pm_message_t state)
6274 {
6275 tpacpi_brightness_checkpoint_nvram();
6276 }
6277
6278 static void brightness_shutdown(void)
6279 {
6280 tpacpi_brightness_checkpoint_nvram();
6281 }
6282
6283 static void brightness_exit(void)
6284 {
6285 if (ibm_backlight_device) {
6286 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
6287 "calling backlight_device_unregister()\n");
6288 backlight_device_unregister(ibm_backlight_device);
6289 }
6290
6291 tpacpi_brightness_checkpoint_nvram();
6292 }
6293
6294 static int brightness_read(struct seq_file *m)
6295 {
6296 int level;
6297
6298 level = brightness_get(NULL);
6299 if (level < 0) {
6300 seq_printf(m, "level:\t\tunreadable\n");
6301 } else {
6302 seq_printf(m, "level:\t\t%d\n", level);
6303 seq_printf(m, "commands:\tup, down\n");
6304 seq_printf(m, "commands:\tlevel <level>"
6305 " (<level> is 0-%d)\n",
6306 (tp_features.bright_16levels) ? 15 : 7);
6307 }
6308
6309 return 0;
6310 }
6311
6312 static int brightness_write(char *buf)
6313 {
6314 int level;
6315 int rc;
6316 char *cmd;
6317 int max_level = (tp_features.bright_16levels) ? 15 : 7;
6318
6319 level = brightness_get(NULL);
6320 if (level < 0)
6321 return level;
6322
6323 while ((cmd = next_cmd(&buf))) {
6324 if (strlencmp(cmd, "up") == 0) {
6325 if (level < max_level)
6326 level++;
6327 } else if (strlencmp(cmd, "down") == 0) {
6328 if (level > 0)
6329 level--;
6330 } else if (sscanf(cmd, "level %d", &level) == 1 &&
6331 level >= 0 && level <= max_level) {
6332 /* new level set */
6333 } else
6334 return -EINVAL;
6335 }
6336
6337 tpacpi_disclose_usertask("procfs brightness",
6338 "set level to %d\n", level);
6339
6340 /*
6341 * Now we know what the final level should be, so we try to set it.
6342 * Doing it this way makes the syscall restartable in case of EINTR
6343 */
6344 rc = brightness_set(level);
6345 if (!rc && ibm_backlight_device)
6346 backlight_force_update(ibm_backlight_device,
6347 BACKLIGHT_UPDATE_SYSFS);
6348 return (rc == -EINTR)? -ERESTARTSYS : rc;
6349 }
6350
6351 static struct ibm_struct brightness_driver_data = {
6352 .name = "brightness",
6353 .read = brightness_read,
6354 .write = brightness_write,
6355 .exit = brightness_exit,
6356 .suspend = brightness_suspend,
6357 .shutdown = brightness_shutdown,
6358 };
6359
6360 /*************************************************************************
6361 * Volume subdriver
6362 */
6363
6364 /*
6365 * IBM ThinkPads have a simple volume controller with MUTE gating.
6366 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec.
6367 *
6368 * Since the *61 series (and probably also the later *60 series), Lenovo
6369 * ThinkPads only implement the MUTE gate.
6370 *
6371 * EC register 0x30
6372 * Bit 6: MUTE (1 mutes sound)
6373 * Bit 3-0: Volume
6374 * Other bits should be zero as far as we know.
6375 *
6376 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and
6377 * bits 3-0 (volume). Other bits in NVRAM may have other functions,
6378 * such as bit 7 which is used to detect repeated presses of MUTE,
6379 * and we leave them unchanged.
6380 */
6381
6382 #define TPACPI_ALSA_DRVNAME "ThinkPad EC"
6383 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
6384 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
6385
6386 static int alsa_index = ~((1 << (SNDRV_CARDS - 3)) - 1); /* last three slots */
6387 static char *alsa_id = "ThinkPadEC";
6388 static int alsa_enable = SNDRV_DEFAULT_ENABLE1;
6389
6390 struct tpacpi_alsa_data {
6391 struct snd_card *card;
6392 struct snd_ctl_elem_id *ctl_mute_id;
6393 struct snd_ctl_elem_id *ctl_vol_id;
6394 };
6395
6396 static struct snd_card *alsa_card;
6397
6398 enum {
6399 TP_EC_AUDIO = 0x30,
6400
6401 /* TP_EC_AUDIO bits */
6402 TP_EC_AUDIO_MUTESW = 6,
6403
6404 /* TP_EC_AUDIO bitmasks */
6405 TP_EC_AUDIO_LVL_MSK = 0x0F,
6406 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW),
6407
6408 /* Maximum volume */
6409 TP_EC_VOLUME_MAX = 14,
6410 };
6411
6412 enum tpacpi_volume_access_mode {
6413 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */
6414 TPACPI_VOL_MODE_EC, /* Pure EC control */
6415 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */
6416 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */
6417 TPACPI_VOL_MODE_MAX
6418 };
6419
6420 enum tpacpi_volume_capabilities {
6421 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */
6422 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */
6423 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */
6424 TPACPI_VOL_CAP_MAX
6425 };
6426
6427 static enum tpacpi_volume_access_mode volume_mode =
6428 TPACPI_VOL_MODE_MAX;
6429
6430 static enum tpacpi_volume_capabilities volume_capabilities;
6431 static int volume_control_allowed;
6432
6433 /*
6434 * Used to syncronize writers to TP_EC_AUDIO and
6435 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write
6436 */
6437 static struct mutex volume_mutex;
6438
6439 static void tpacpi_volume_checkpoint_nvram(void)
6440 {
6441 u8 lec = 0;
6442 u8 b_nvram;
6443 u8 ec_mask;
6444
6445 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM)
6446 return;
6447 if (!volume_control_allowed)
6448 return;
6449
6450 vdbg_printk(TPACPI_DBG_MIXER,
6451 "trying to checkpoint mixer state to NVRAM...\n");
6452
6453 if (tp_features.mixer_no_level_control)
6454 ec_mask = TP_EC_AUDIO_MUTESW_MSK;
6455 else
6456 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK;
6457
6458 if (mutex_lock_killable(&volume_mutex) < 0)
6459 return;
6460
6461 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec)))
6462 goto unlock;
6463 lec &= ec_mask;
6464 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
6465
6466 if (lec != (b_nvram & ec_mask)) {
6467 /* NVRAM needs update */
6468 b_nvram &= ~ec_mask;
6469 b_nvram |= lec;
6470 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER);
6471 dbg_printk(TPACPI_DBG_MIXER,
6472 "updated NVRAM mixer status to 0x%02x (0x%02x)\n",
6473 (unsigned int) lec, (unsigned int) b_nvram);
6474 } else {
6475 vdbg_printk(TPACPI_DBG_MIXER,
6476 "NVRAM mixer status already is 0x%02x (0x%02x)\n",
6477 (unsigned int) lec, (unsigned int) b_nvram);
6478 }
6479
6480 unlock:
6481 mutex_unlock(&volume_mutex);
6482 }
6483
6484 static int volume_get_status_ec(u8 *status)
6485 {
6486 u8 s;
6487
6488 if (!acpi_ec_read(TP_EC_AUDIO, &s))
6489 return -EIO;
6490
6491 *status = s;
6492
6493 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s);
6494
6495 return 0;
6496 }
6497
6498 static int volume_get_status(u8 *status)
6499 {
6500 return volume_get_status_ec(status);
6501 }
6502
6503 static int volume_set_status_ec(const u8 status)
6504 {
6505 if (!acpi_ec_write(TP_EC_AUDIO, status))
6506 return -EIO;
6507
6508 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status);
6509
6510 return 0;
6511 }
6512
6513 static int volume_set_status(const u8 status)
6514 {
6515 return volume_set_status_ec(status);
6516 }
6517
6518 static int volume_set_mute_ec(const bool mute)
6519 {
6520 int rc;
6521 u8 s, n;
6522
6523 if (mutex_lock_killable(&volume_mutex) < 0)
6524 return -EINTR;
6525
6526 rc = volume_get_status_ec(&s);
6527 if (rc)
6528 goto unlock;
6529
6530 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK :
6531 s & ~TP_EC_AUDIO_MUTESW_MSK;
6532
6533 if (n != s)
6534 rc = volume_set_status_ec(n);
6535
6536 unlock:
6537 mutex_unlock(&volume_mutex);
6538 return rc;
6539 }
6540
6541 static int volume_set_mute(const bool mute)
6542 {
6543 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n",
6544 (mute) ? "" : "un");
6545 return volume_set_mute_ec(mute);
6546 }
6547
6548 static int volume_set_volume_ec(const u8 vol)
6549 {
6550 int rc;
6551 u8 s, n;
6552
6553 if (vol > TP_EC_VOLUME_MAX)
6554 return -EINVAL;
6555
6556 if (mutex_lock_killable(&volume_mutex) < 0)
6557 return -EINTR;
6558
6559 rc = volume_get_status_ec(&s);
6560 if (rc)
6561 goto unlock;
6562
6563 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol;
6564
6565 if (n != s)
6566 rc = volume_set_status_ec(n);
6567
6568 unlock:
6569 mutex_unlock(&volume_mutex);
6570 return rc;
6571 }
6572
6573 static int volume_set_volume(const u8 vol)
6574 {
6575 dbg_printk(TPACPI_DBG_MIXER,
6576 "trying to set volume level to %hu\n", vol);
6577 return volume_set_volume_ec(vol);
6578 }
6579
6580 static void volume_alsa_notify_change(void)
6581 {
6582 struct tpacpi_alsa_data *d;
6583
6584 if (alsa_card && alsa_card->private_data) {
6585 d = alsa_card->private_data;
6586 if (d->ctl_mute_id)
6587 snd_ctl_notify(alsa_card,
6588 SNDRV_CTL_EVENT_MASK_VALUE,
6589 d->ctl_mute_id);
6590 if (d->ctl_vol_id)
6591 snd_ctl_notify(alsa_card,
6592 SNDRV_CTL_EVENT_MASK_VALUE,
6593 d->ctl_vol_id);
6594 }
6595 }
6596
6597 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol,
6598 struct snd_ctl_elem_info *uinfo)
6599 {
6600 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
6601 uinfo->count = 1;
6602 uinfo->value.integer.min = 0;
6603 uinfo->value.integer.max = TP_EC_VOLUME_MAX;
6604 return 0;
6605 }
6606
6607 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol,
6608 struct snd_ctl_elem_value *ucontrol)
6609 {
6610 u8 s;
6611 int rc;
6612
6613 rc = volume_get_status(&s);
6614 if (rc < 0)
6615 return rc;
6616
6617 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK;
6618 return 0;
6619 }
6620
6621 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol,
6622 struct snd_ctl_elem_value *ucontrol)
6623 {
6624 return volume_set_volume(ucontrol->value.integer.value[0]);
6625 }
6626
6627 #define volume_alsa_mute_info snd_ctl_boolean_mono_info
6628
6629 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol,
6630 struct snd_ctl_elem_value *ucontrol)
6631 {
6632 u8 s;
6633 int rc;
6634
6635 rc = volume_get_status(&s);
6636 if (rc < 0)
6637 return rc;
6638
6639 ucontrol->value.integer.value[0] =
6640 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1;
6641 return 0;
6642 }
6643
6644 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol,
6645 struct snd_ctl_elem_value *ucontrol)
6646 {
6647 return volume_set_mute(!ucontrol->value.integer.value[0]);
6648 }
6649
6650 static struct snd_kcontrol_new volume_alsa_control_vol __devinitdata = {
6651 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6652 .name = "Console Playback Volume",
6653 .index = 0,
6654 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6655 .info = volume_alsa_vol_info,
6656 .get = volume_alsa_vol_get,
6657 };
6658
6659 static struct snd_kcontrol_new volume_alsa_control_mute __devinitdata = {
6660 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
6661 .name = "Console Playback Switch",
6662 .index = 0,
6663 .access = SNDRV_CTL_ELEM_ACCESS_READ,
6664 .info = volume_alsa_mute_info,
6665 .get = volume_alsa_mute_get,
6666 };
6667
6668 static void volume_suspend(pm_message_t state)
6669 {
6670 tpacpi_volume_checkpoint_nvram();
6671 }
6672
6673 static void volume_resume(void)
6674 {
6675 volume_alsa_notify_change();
6676 }
6677
6678 static void volume_shutdown(void)
6679 {
6680 tpacpi_volume_checkpoint_nvram();
6681 }
6682
6683 static void volume_exit(void)
6684 {
6685 if (alsa_card) {
6686 snd_card_free(alsa_card);
6687 alsa_card = NULL;
6688 }
6689
6690 tpacpi_volume_checkpoint_nvram();
6691 }
6692
6693 static int __init volume_create_alsa_mixer(void)
6694 {
6695 struct snd_card *card;
6696 struct tpacpi_alsa_data *data;
6697 struct snd_kcontrol *ctl_vol;
6698 struct snd_kcontrol *ctl_mute;
6699 int rc;
6700
6701 card = snd_card_new(alsa_index, alsa_id, THIS_MODULE,
6702 sizeof(struct tpacpi_alsa_data));
6703 if (!card)
6704 return -ENOMEM;
6705
6706 BUG_ON(!card->private_data);
6707 data = card->private_data;
6708 data->card = card;
6709
6710 strlcpy(card->driver, TPACPI_ALSA_DRVNAME,
6711 sizeof(card->driver));
6712 strlcpy(card->shortname, TPACPI_ALSA_SHRTNAME,
6713 sizeof(card->shortname));
6714 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s",
6715 (thinkpad_id.ec_version_str) ?
6716 thinkpad_id.ec_version_str : "(unknown)");
6717 snprintf(card->longname, sizeof(card->longname),
6718 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO,
6719 (thinkpad_id.ec_version_str) ?
6720 thinkpad_id.ec_version_str : "unknown");
6721
6722 if (volume_control_allowed) {
6723 volume_alsa_control_vol.put = volume_alsa_vol_put;
6724 volume_alsa_control_vol.access =
6725 SNDRV_CTL_ELEM_ACCESS_READWRITE;
6726
6727 volume_alsa_control_mute.put = volume_alsa_mute_put;
6728 volume_alsa_control_mute.access =
6729 SNDRV_CTL_ELEM_ACCESS_READWRITE;
6730 }
6731
6732 if (!tp_features.mixer_no_level_control) {
6733 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL);
6734 rc = snd_ctl_add(card, ctl_vol);
6735 if (rc < 0) {
6736 printk(TPACPI_ERR
6737 "Failed to create ALSA volume control\n");
6738 goto err_out;
6739 }
6740 data->ctl_vol_id = &ctl_vol->id;
6741 }
6742
6743 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL);
6744 rc = snd_ctl_add(card, ctl_mute);
6745 if (rc < 0) {
6746 printk(TPACPI_ERR "Failed to create ALSA mute control\n");
6747 goto err_out;
6748 }
6749 data->ctl_mute_id = &ctl_mute->id;
6750
6751 snd_card_set_dev(card, &tpacpi_pdev->dev);
6752 rc = snd_card_register(card);
6753
6754 err_out:
6755 if (rc < 0) {
6756 snd_card_free(card);
6757 card = NULL;
6758 }
6759
6760 alsa_card = card;
6761 return rc;
6762 }
6763
6764 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */
6765 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */
6766
6767 static const struct tpacpi_quirk volume_quirk_table[] __initconst = {
6768 /* Whitelist volume level on all IBM by default */
6769 { .vendor = PCI_VENDOR_ID_IBM,
6770 .bios = TPACPI_MATCH_ANY,
6771 .ec = TPACPI_MATCH_ANY,
6772 .quirks = TPACPI_VOL_Q_LEVEL },
6773
6774 /* Lenovo models with volume control (needs confirmation) */
6775 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */
6776 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */
6777 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */
6778 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */
6779 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */
6780 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */
6781 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */
6782
6783 /* Whitelist mute-only on all Lenovo by default */
6784 { .vendor = PCI_VENDOR_ID_LENOVO,
6785 .bios = TPACPI_MATCH_ANY,
6786 .ec = TPACPI_MATCH_ANY,
6787 .quirks = TPACPI_VOL_Q_MUTEONLY }
6788 };
6789
6790 static int __init volume_init(struct ibm_init_struct *iibm)
6791 {
6792 unsigned long quirks;
6793 int rc;
6794
6795 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n");
6796
6797 mutex_init(&volume_mutex);
6798
6799 /*
6800 * Check for module parameter bogosity, note that we
6801 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be
6802 * able to detect "unspecified"
6803 */
6804 if (volume_mode > TPACPI_VOL_MODE_MAX)
6805 return -EINVAL;
6806
6807 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) {
6808 printk(TPACPI_ERR
6809 "UCMS step volume mode not implemented, "
6810 "please contact %s\n", TPACPI_MAIL);
6811 return 1;
6812 }
6813
6814 if (volume_capabilities >= TPACPI_VOL_CAP_MAX)
6815 return -EINVAL;
6816
6817 /*
6818 * The ALSA mixer is our primary interface.
6819 * When disabled, don't install the subdriver at all
6820 */
6821 if (!alsa_enable) {
6822 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6823 "ALSA mixer disabled by parameter, "
6824 "not loading volume subdriver...\n");
6825 return 1;
6826 }
6827
6828 quirks = tpacpi_check_quirks(volume_quirk_table,
6829 ARRAY_SIZE(volume_quirk_table));
6830
6831 switch (volume_capabilities) {
6832 case TPACPI_VOL_CAP_AUTO:
6833 if (quirks & TPACPI_VOL_Q_MUTEONLY)
6834 tp_features.mixer_no_level_control = 1;
6835 else if (quirks & TPACPI_VOL_Q_LEVEL)
6836 tp_features.mixer_no_level_control = 0;
6837 else
6838 return 1; /* no mixer */
6839 break;
6840 case TPACPI_VOL_CAP_VOLMUTE:
6841 tp_features.mixer_no_level_control = 0;
6842 break;
6843 case TPACPI_VOL_CAP_MUTEONLY:
6844 tp_features.mixer_no_level_control = 1;
6845 break;
6846 default:
6847 return 1;
6848 }
6849
6850 if (volume_capabilities != TPACPI_VOL_CAP_AUTO)
6851 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6852 "using user-supplied volume_capabilities=%d\n",
6853 volume_capabilities);
6854
6855 if (volume_mode == TPACPI_VOL_MODE_AUTO ||
6856 volume_mode == TPACPI_VOL_MODE_MAX) {
6857 volume_mode = TPACPI_VOL_MODE_ECNVRAM;
6858
6859 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6860 "driver auto-selected volume_mode=%d\n",
6861 volume_mode);
6862 } else {
6863 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6864 "using user-supplied volume_mode=%d\n",
6865 volume_mode);
6866 }
6867
6868 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6869 "mute is supported, volume control is %s\n",
6870 str_supported(!tp_features.mixer_no_level_control));
6871
6872 rc = volume_create_alsa_mixer();
6873 if (rc) {
6874 printk(TPACPI_ERR
6875 "Could not create the ALSA mixer interface\n");
6876 return rc;
6877 }
6878
6879 printk(TPACPI_INFO
6880 "Console audio control enabled, mode: %s\n",
6881 (volume_control_allowed) ?
6882 "override (read/write)" :
6883 "monitor (read only)");
6884
6885 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER,
6886 "registering volume hotkeys as change notification\n");
6887 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask
6888 | TP_ACPI_HKEY_VOLUP_MASK
6889 | TP_ACPI_HKEY_VOLDWN_MASK
6890 | TP_ACPI_HKEY_MUTE_MASK);
6891
6892 return 0;
6893 }
6894
6895 static int volume_read(struct seq_file *m)
6896 {
6897 u8 status;
6898
6899 if (volume_get_status(&status) < 0) {
6900 seq_printf(m, "level:\t\tunreadable\n");
6901 } else {
6902 if (tp_features.mixer_no_level_control)
6903 seq_printf(m, "level:\t\tunsupported\n");
6904 else
6905 seq_printf(m, "level:\t\t%d\n",
6906 status & TP_EC_AUDIO_LVL_MSK);
6907
6908 seq_printf(m, "mute:\t\t%s\n",
6909 onoff(status, TP_EC_AUDIO_MUTESW));
6910
6911 if (volume_control_allowed) {
6912 seq_printf(m, "commands:\tunmute, mute\n");
6913 if (!tp_features.mixer_no_level_control) {
6914 seq_printf(m,
6915 "commands:\tup, down\n");
6916 seq_printf(m,
6917 "commands:\tlevel <level>"
6918 " (<level> is 0-%d)\n",
6919 TP_EC_VOLUME_MAX);
6920 }
6921 }
6922 }
6923
6924 return 0;
6925 }
6926
6927 static int volume_write(char *buf)
6928 {
6929 u8 s;
6930 u8 new_level, new_mute;
6931 int l;
6932 char *cmd;
6933 int rc;
6934
6935 /*
6936 * We do allow volume control at driver startup, so that the
6937 * user can set initial state through the volume=... parameter hack.
6938 */
6939 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) {
6940 if (unlikely(!tp_warned.volume_ctrl_forbidden)) {
6941 tp_warned.volume_ctrl_forbidden = 1;
6942 printk(TPACPI_NOTICE
6943 "Console audio control in monitor mode, "
6944 "changes are not allowed.\n");
6945 printk(TPACPI_NOTICE
6946 "Use the volume_control=1 module parameter "
6947 "to enable volume control\n");
6948 }
6949 return -EPERM;
6950 }
6951
6952 rc = volume_get_status(&s);
6953 if (rc < 0)
6954 return rc;
6955
6956 new_level = s & TP_EC_AUDIO_LVL_MSK;
6957 new_mute = s & TP_EC_AUDIO_MUTESW_MSK;
6958
6959 while ((cmd = next_cmd(&buf))) {
6960 if (!tp_features.mixer_no_level_control) {
6961 if (strlencmp(cmd, "up") == 0) {
6962 if (new_mute)
6963 new_mute = 0;
6964 else if (new_level < TP_EC_VOLUME_MAX)
6965 new_level++;
6966 continue;
6967 } else if (strlencmp(cmd, "down") == 0) {
6968 if (new_mute)
6969 new_mute = 0;
6970 else if (new_level > 0)
6971 new_level--;
6972 continue;
6973 } else if (sscanf(cmd, "level %u", &l) == 1 &&
6974 l >= 0 && l <= TP_EC_VOLUME_MAX) {
6975 new_level = l;
6976 continue;
6977 }
6978 }
6979 if (strlencmp(cmd, "mute") == 0)
6980 new_mute = TP_EC_AUDIO_MUTESW_MSK;
6981 else if (strlencmp(cmd, "unmute") == 0)
6982 new_mute = 0;
6983 else
6984 return -EINVAL;
6985 }
6986
6987 if (tp_features.mixer_no_level_control) {
6988 tpacpi_disclose_usertask("procfs volume", "%smute\n",
6989 new_mute ? "" : "un");
6990 rc = volume_set_mute(!!new_mute);
6991 } else {
6992 tpacpi_disclose_usertask("procfs volume",
6993 "%smute and set level to %d\n",
6994 new_mute ? "" : "un", new_level);
6995 rc = volume_set_status(new_mute | new_level);
6996 }
6997 volume_alsa_notify_change();
6998
6999 return (rc == -EINTR) ? -ERESTARTSYS : rc;
7000 }
7001
7002 static struct ibm_struct volume_driver_data = {
7003 .name = "volume",
7004 .read = volume_read,
7005 .write = volume_write,
7006 .exit = volume_exit,
7007 .suspend = volume_suspend,
7008 .resume = volume_resume,
7009 .shutdown = volume_shutdown,
7010 };
7011
7012 /*************************************************************************
7013 * Fan subdriver
7014 */
7015
7016 /*
7017 * FAN ACCESS MODES
7018 *
7019 * TPACPI_FAN_RD_ACPI_GFAN:
7020 * ACPI GFAN method: returns fan level
7021 *
7022 * see TPACPI_FAN_WR_ACPI_SFAN
7023 * EC 0x2f (HFSP) not available if GFAN exists
7024 *
7025 * TPACPI_FAN_WR_ACPI_SFAN:
7026 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
7027 *
7028 * EC 0x2f (HFSP) might be available *for reading*, but do not use
7029 * it for writing.
7030 *
7031 * TPACPI_FAN_WR_TPEC:
7032 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
7033 * Supported on almost all ThinkPads
7034 *
7035 * Fan speed changes of any sort (including those caused by the
7036 * disengaged mode) are usually done slowly by the firmware as the
7037 * maximum ammount of fan duty cycle change per second seems to be
7038 * limited.
7039 *
7040 * Reading is not available if GFAN exists.
7041 * Writing is not available if SFAN exists.
7042 *
7043 * Bits
7044 * 7 automatic mode engaged;
7045 * (default operation mode of the ThinkPad)
7046 * fan level is ignored in this mode.
7047 * 6 full speed mode (takes precedence over bit 7);
7048 * not available on all thinkpads. May disable
7049 * the tachometer while the fan controller ramps up
7050 * the speed (which can take up to a few *minutes*).
7051 * Speeds up fan to 100% duty-cycle, which is far above
7052 * the standard RPM levels. It is not impossible that
7053 * it could cause hardware damage.
7054 * 5-3 unused in some models. Extra bits for fan level
7055 * in others, but still useless as all values above
7056 * 7 map to the same speed as level 7 in these models.
7057 * 2-0 fan level (0..7 usually)
7058 * 0x00 = stop
7059 * 0x07 = max (set when temperatures critical)
7060 * Some ThinkPads may have other levels, see
7061 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
7062 *
7063 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
7064 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
7065 * does so, its initial value is meaningless (0x07).
7066 *
7067 * For firmware bugs, refer to:
7068 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7069 *
7070 * ----
7071 *
7072 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
7073 * Main fan tachometer reading (in RPM)
7074 *
7075 * This register is present on all ThinkPads with a new-style EC, and
7076 * it is known not to be present on the A21m/e, and T22, as there is
7077 * something else in offset 0x84 according to the ACPI DSDT. Other
7078 * ThinkPads from this same time period (and earlier) probably lack the
7079 * tachometer as well.
7080 *
7081 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
7082 * was never fixed by IBM to report the EC firmware version string
7083 * probably support the tachometer (like the early X models), so
7084 * detecting it is quite hard. We need more data to know for sure.
7085 *
7086 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
7087 * might result.
7088 *
7089 * FIRMWARE BUG: may go stale while the EC is switching to full speed
7090 * mode.
7091 *
7092 * For firmware bugs, refer to:
7093 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
7094 *
7095 * ----
7096 *
7097 * ThinkPad EC register 0x31 bit 0 (only on select models)
7098 *
7099 * When bit 0 of EC register 0x31 is zero, the tachometer registers
7100 * show the speed of the main fan. When bit 0 of EC register 0x31
7101 * is one, the tachometer registers show the speed of the auxiliary
7102 * fan.
7103 *
7104 * Fan control seems to affect both fans, regardless of the state
7105 * of this bit.
7106 *
7107 * So far, only the firmware for the X60/X61 non-tablet versions
7108 * seem to support this (firmware TP-7M).
7109 *
7110 * TPACPI_FAN_WR_ACPI_FANS:
7111 * ThinkPad X31, X40, X41. Not available in the X60.
7112 *
7113 * FANS ACPI handle: takes three arguments: low speed, medium speed,
7114 * high speed. ACPI DSDT seems to map these three speeds to levels
7115 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
7116 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
7117 *
7118 * The speeds are stored on handles
7119 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
7120 *
7121 * There are three default speed sets, acessible as handles:
7122 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
7123 *
7124 * ACPI DSDT switches which set is in use depending on various
7125 * factors.
7126 *
7127 * TPACPI_FAN_WR_TPEC is also available and should be used to
7128 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
7129 * but the ACPI tables just mention level 7.
7130 */
7131
7132 enum { /* Fan control constants */
7133 fan_status_offset = 0x2f, /* EC register 0x2f */
7134 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
7135 * 0x84 must be read before 0x85 */
7136 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M)
7137 bit 0 selects which fan is active */
7138
7139 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
7140 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
7141
7142 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
7143 };
7144
7145 enum fan_status_access_mode {
7146 TPACPI_FAN_NONE = 0, /* No fan status or control */
7147 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
7148 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
7149 };
7150
7151 enum fan_control_access_mode {
7152 TPACPI_FAN_WR_NONE = 0, /* No fan control */
7153 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
7154 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
7155 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
7156 };
7157
7158 enum fan_control_commands {
7159 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
7160 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
7161 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
7162 * and also watchdog cmd */
7163 };
7164
7165 static int fan_control_allowed;
7166
7167 static enum fan_status_access_mode fan_status_access_mode;
7168 static enum fan_control_access_mode fan_control_access_mode;
7169 static enum fan_control_commands fan_control_commands;
7170
7171 static u8 fan_control_initial_status;
7172 static u8 fan_control_desired_level;
7173 static u8 fan_control_resume_level;
7174 static int fan_watchdog_maxinterval;
7175
7176 static struct mutex fan_mutex;
7177
7178 static void fan_watchdog_fire(struct work_struct *ignored);
7179 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
7180
7181 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
7182 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
7183 "\\FSPD", /* 600e/x, 770e, 770x */
7184 ); /* all others */
7185 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
7186 "JFNS", /* 770x-JL */
7187 ); /* all others */
7188
7189 /*
7190 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
7191 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
7192 * be in auto mode (0x80).
7193 *
7194 * This is corrected by any write to HFSP either by the driver, or
7195 * by the firmware.
7196 *
7197 * We assume 0x07 really means auto mode while this quirk is active,
7198 * as this is far more likely than the ThinkPad being in level 7,
7199 * which is only used by the firmware during thermal emergencies.
7200 *
7201 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
7202 * TP-70 (T43, R52), which are known to be buggy.
7203 */
7204
7205 static void fan_quirk1_setup(void)
7206 {
7207 if (fan_control_initial_status == 0x07) {
7208 printk(TPACPI_NOTICE
7209 "fan_init: initial fan status is unknown, "
7210 "assuming it is in auto mode\n");
7211 tp_features.fan_ctrl_status_undef = 1;
7212 }
7213 }
7214
7215 static void fan_quirk1_handle(u8 *fan_status)
7216 {
7217 if (unlikely(tp_features.fan_ctrl_status_undef)) {
7218 if (*fan_status != fan_control_initial_status) {
7219 /* something changed the HFSP regisnter since
7220 * driver init time, so it is not undefined
7221 * anymore */
7222 tp_features.fan_ctrl_status_undef = 0;
7223 } else {
7224 /* Return most likely status. In fact, it
7225 * might be the only possible status */
7226 *fan_status = TP_EC_FAN_AUTO;
7227 }
7228 }
7229 }
7230
7231 /* Select main fan on X60/X61, NOOP on others */
7232 static bool fan_select_fan1(void)
7233 {
7234 if (tp_features.second_fan) {
7235 u8 val;
7236
7237 if (ec_read(fan_select_offset, &val) < 0)
7238 return false;
7239 val &= 0xFEU;
7240 if (ec_write(fan_select_offset, val) < 0)
7241 return false;
7242 }
7243 return true;
7244 }
7245
7246 /* Select secondary fan on X60/X61 */
7247 static bool fan_select_fan2(void)
7248 {
7249 u8 val;
7250
7251 if (!tp_features.second_fan)
7252 return false;
7253
7254 if (ec_read(fan_select_offset, &val) < 0)
7255 return false;
7256 val |= 0x01U;
7257 if (ec_write(fan_select_offset, val) < 0)
7258 return false;
7259
7260 return true;
7261 }
7262
7263 /*
7264 * Call with fan_mutex held
7265 */
7266 static void fan_update_desired_level(u8 status)
7267 {
7268 if ((status &
7269 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7270 if (status > 7)
7271 fan_control_desired_level = 7;
7272 else
7273 fan_control_desired_level = status;
7274 }
7275 }
7276
7277 static int fan_get_status(u8 *status)
7278 {
7279 u8 s;
7280
7281 /* TODO:
7282 * Add TPACPI_FAN_RD_ACPI_FANS ? */
7283
7284 switch (fan_status_access_mode) {
7285 case TPACPI_FAN_RD_ACPI_GFAN:
7286 /* 570, 600e/x, 770e, 770x */
7287
7288 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
7289 return -EIO;
7290
7291 if (likely(status))
7292 *status = s & 0x07;
7293
7294 break;
7295
7296 case TPACPI_FAN_RD_TPEC:
7297 /* all except 570, 600e/x, 770e, 770x */
7298 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
7299 return -EIO;
7300
7301 if (likely(status)) {
7302 *status = s;
7303 fan_quirk1_handle(status);
7304 }
7305
7306 break;
7307
7308 default:
7309 return -ENXIO;
7310 }
7311
7312 return 0;
7313 }
7314
7315 static int fan_get_status_safe(u8 *status)
7316 {
7317 int rc;
7318 u8 s;
7319
7320 if (mutex_lock_killable(&fan_mutex))
7321 return -ERESTARTSYS;
7322 rc = fan_get_status(&s);
7323 if (!rc)
7324 fan_update_desired_level(s);
7325 mutex_unlock(&fan_mutex);
7326
7327 if (status)
7328 *status = s;
7329
7330 return rc;
7331 }
7332
7333 static int fan_get_speed(unsigned int *speed)
7334 {
7335 u8 hi, lo;
7336
7337 switch (fan_status_access_mode) {
7338 case TPACPI_FAN_RD_TPEC:
7339 /* all except 570, 600e/x, 770e, 770x */
7340 if (unlikely(!fan_select_fan1()))
7341 return -EIO;
7342 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
7343 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
7344 return -EIO;
7345
7346 if (likely(speed))
7347 *speed = (hi << 8) | lo;
7348
7349 break;
7350
7351 default:
7352 return -ENXIO;
7353 }
7354
7355 return 0;
7356 }
7357
7358 static int fan2_get_speed(unsigned int *speed)
7359 {
7360 u8 hi, lo;
7361 bool rc;
7362
7363 switch (fan_status_access_mode) {
7364 case TPACPI_FAN_RD_TPEC:
7365 /* all except 570, 600e/x, 770e, 770x */
7366 if (unlikely(!fan_select_fan2()))
7367 return -EIO;
7368 rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
7369 !acpi_ec_read(fan_rpm_offset + 1, &hi);
7370 fan_select_fan1(); /* play it safe */
7371 if (rc)
7372 return -EIO;
7373
7374 if (likely(speed))
7375 *speed = (hi << 8) | lo;
7376
7377 break;
7378
7379 default:
7380 return -ENXIO;
7381 }
7382
7383 return 0;
7384 }
7385
7386 static int fan_set_level(int level)
7387 {
7388 if (!fan_control_allowed)
7389 return -EPERM;
7390
7391 switch (fan_control_access_mode) {
7392 case TPACPI_FAN_WR_ACPI_SFAN:
7393 if (level >= 0 && level <= 7) {
7394 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
7395 return -EIO;
7396 } else
7397 return -EINVAL;
7398 break;
7399
7400 case TPACPI_FAN_WR_ACPI_FANS:
7401 case TPACPI_FAN_WR_TPEC:
7402 if (!(level & TP_EC_FAN_AUTO) &&
7403 !(level & TP_EC_FAN_FULLSPEED) &&
7404 ((level < 0) || (level > 7)))
7405 return -EINVAL;
7406
7407 /* safety net should the EC not support AUTO
7408 * or FULLSPEED mode bits and just ignore them */
7409 if (level & TP_EC_FAN_FULLSPEED)
7410 level |= 7; /* safety min speed 7 */
7411 else if (level & TP_EC_FAN_AUTO)
7412 level |= 4; /* safety min speed 4 */
7413
7414 if (!acpi_ec_write(fan_status_offset, level))
7415 return -EIO;
7416 else
7417 tp_features.fan_ctrl_status_undef = 0;
7418 break;
7419
7420 default:
7421 return -ENXIO;
7422 }
7423
7424 vdbg_printk(TPACPI_DBG_FAN,
7425 "fan control: set fan control register to 0x%02x\n", level);
7426 return 0;
7427 }
7428
7429 static int fan_set_level_safe(int level)
7430 {
7431 int rc;
7432
7433 if (!fan_control_allowed)
7434 return -EPERM;
7435
7436 if (mutex_lock_killable(&fan_mutex))
7437 return -ERESTARTSYS;
7438
7439 if (level == TPACPI_FAN_LAST_LEVEL)
7440 level = fan_control_desired_level;
7441
7442 rc = fan_set_level(level);
7443 if (!rc)
7444 fan_update_desired_level(level);
7445
7446 mutex_unlock(&fan_mutex);
7447 return rc;
7448 }
7449
7450 static int fan_set_enable(void)
7451 {
7452 u8 s;
7453 int rc;
7454
7455 if (!fan_control_allowed)
7456 return -EPERM;
7457
7458 if (mutex_lock_killable(&fan_mutex))
7459 return -ERESTARTSYS;
7460
7461 switch (fan_control_access_mode) {
7462 case TPACPI_FAN_WR_ACPI_FANS:
7463 case TPACPI_FAN_WR_TPEC:
7464 rc = fan_get_status(&s);
7465 if (rc < 0)
7466 break;
7467
7468 /* Don't go out of emergency fan mode */
7469 if (s != 7) {
7470 s &= 0x07;
7471 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
7472 }
7473
7474 if (!acpi_ec_write(fan_status_offset, s))
7475 rc = -EIO;
7476 else {
7477 tp_features.fan_ctrl_status_undef = 0;
7478 rc = 0;
7479 }
7480 break;
7481
7482 case TPACPI_FAN_WR_ACPI_SFAN:
7483 rc = fan_get_status(&s);
7484 if (rc < 0)
7485 break;
7486
7487 s &= 0x07;
7488
7489 /* Set fan to at least level 4 */
7490 s |= 4;
7491
7492 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
7493 rc = -EIO;
7494 else
7495 rc = 0;
7496 break;
7497
7498 default:
7499 rc = -ENXIO;
7500 }
7501
7502 mutex_unlock(&fan_mutex);
7503
7504 if (!rc)
7505 vdbg_printk(TPACPI_DBG_FAN,
7506 "fan control: set fan control register to 0x%02x\n",
7507 s);
7508 return rc;
7509 }
7510
7511 static int fan_set_disable(void)
7512 {
7513 int rc;
7514
7515 if (!fan_control_allowed)
7516 return -EPERM;
7517
7518 if (mutex_lock_killable(&fan_mutex))
7519 return -ERESTARTSYS;
7520
7521 rc = 0;
7522 switch (fan_control_access_mode) {
7523 case TPACPI_FAN_WR_ACPI_FANS:
7524 case TPACPI_FAN_WR_TPEC:
7525 if (!acpi_ec_write(fan_status_offset, 0x00))
7526 rc = -EIO;
7527 else {
7528 fan_control_desired_level = 0;
7529 tp_features.fan_ctrl_status_undef = 0;
7530 }
7531 break;
7532
7533 case TPACPI_FAN_WR_ACPI_SFAN:
7534 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
7535 rc = -EIO;
7536 else
7537 fan_control_desired_level = 0;
7538 break;
7539
7540 default:
7541 rc = -ENXIO;
7542 }
7543
7544 if (!rc)
7545 vdbg_printk(TPACPI_DBG_FAN,
7546 "fan control: set fan control register to 0\n");
7547
7548 mutex_unlock(&fan_mutex);
7549 return rc;
7550 }
7551
7552 static int fan_set_speed(int speed)
7553 {
7554 int rc;
7555
7556 if (!fan_control_allowed)
7557 return -EPERM;
7558
7559 if (mutex_lock_killable(&fan_mutex))
7560 return -ERESTARTSYS;
7561
7562 rc = 0;
7563 switch (fan_control_access_mode) {
7564 case TPACPI_FAN_WR_ACPI_FANS:
7565 if (speed >= 0 && speed <= 65535) {
7566 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
7567 speed, speed, speed))
7568 rc = -EIO;
7569 } else
7570 rc = -EINVAL;
7571 break;
7572
7573 default:
7574 rc = -ENXIO;
7575 }
7576
7577 mutex_unlock(&fan_mutex);
7578 return rc;
7579 }
7580
7581 static void fan_watchdog_reset(void)
7582 {
7583 static int fan_watchdog_active;
7584
7585 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
7586 return;
7587
7588 if (fan_watchdog_active)
7589 cancel_delayed_work(&fan_watchdog_task);
7590
7591 if (fan_watchdog_maxinterval > 0 &&
7592 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
7593 fan_watchdog_active = 1;
7594 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
7595 msecs_to_jiffies(fan_watchdog_maxinterval
7596 * 1000))) {
7597 printk(TPACPI_ERR
7598 "failed to queue the fan watchdog, "
7599 "watchdog will not trigger\n");
7600 }
7601 } else
7602 fan_watchdog_active = 0;
7603 }
7604
7605 static void fan_watchdog_fire(struct work_struct *ignored)
7606 {
7607 int rc;
7608
7609 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
7610 return;
7611
7612 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
7613 rc = fan_set_enable();
7614 if (rc < 0) {
7615 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
7616 "will try again later...\n", -rc);
7617 /* reschedule for later */
7618 fan_watchdog_reset();
7619 }
7620 }
7621
7622 /*
7623 * SYSFS fan layout: hwmon compatible (device)
7624 *
7625 * pwm*_enable:
7626 * 0: "disengaged" mode
7627 * 1: manual mode
7628 * 2: native EC "auto" mode (recommended, hardware default)
7629 *
7630 * pwm*: set speed in manual mode, ignored otherwise.
7631 * 0 is level 0; 255 is level 7. Intermediate points done with linear
7632 * interpolation.
7633 *
7634 * fan*_input: tachometer reading, RPM
7635 *
7636 *
7637 * SYSFS fan layout: extensions
7638 *
7639 * fan_watchdog (driver):
7640 * fan watchdog interval in seconds, 0 disables (default), max 120
7641 */
7642
7643 /* sysfs fan pwm1_enable ----------------------------------------------- */
7644 static ssize_t fan_pwm1_enable_show(struct device *dev,
7645 struct device_attribute *attr,
7646 char *buf)
7647 {
7648 int res, mode;
7649 u8 status;
7650
7651 res = fan_get_status_safe(&status);
7652 if (res)
7653 return res;
7654
7655 if (status & TP_EC_FAN_FULLSPEED) {
7656 mode = 0;
7657 } else if (status & TP_EC_FAN_AUTO) {
7658 mode = 2;
7659 } else
7660 mode = 1;
7661
7662 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
7663 }
7664
7665 static ssize_t fan_pwm1_enable_store(struct device *dev,
7666 struct device_attribute *attr,
7667 const char *buf, size_t count)
7668 {
7669 unsigned long t;
7670 int res, level;
7671
7672 if (parse_strtoul(buf, 2, &t))
7673 return -EINVAL;
7674
7675 tpacpi_disclose_usertask("hwmon pwm1_enable",
7676 "set fan mode to %lu\n", t);
7677
7678 switch (t) {
7679 case 0:
7680 level = TP_EC_FAN_FULLSPEED;
7681 break;
7682 case 1:
7683 level = TPACPI_FAN_LAST_LEVEL;
7684 break;
7685 case 2:
7686 level = TP_EC_FAN_AUTO;
7687 break;
7688 case 3:
7689 /* reserved for software-controlled auto mode */
7690 return -ENOSYS;
7691 default:
7692 return -EINVAL;
7693 }
7694
7695 res = fan_set_level_safe(level);
7696 if (res == -ENXIO)
7697 return -EINVAL;
7698 else if (res < 0)
7699 return res;
7700
7701 fan_watchdog_reset();
7702
7703 return count;
7704 }
7705
7706 static struct device_attribute dev_attr_fan_pwm1_enable =
7707 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
7708 fan_pwm1_enable_show, fan_pwm1_enable_store);
7709
7710 /* sysfs fan pwm1 ------------------------------------------------------ */
7711 static ssize_t fan_pwm1_show(struct device *dev,
7712 struct device_attribute *attr,
7713 char *buf)
7714 {
7715 int res;
7716 u8 status;
7717
7718 res = fan_get_status_safe(&status);
7719 if (res)
7720 return res;
7721
7722 if ((status &
7723 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
7724 status = fan_control_desired_level;
7725
7726 if (status > 7)
7727 status = 7;
7728
7729 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
7730 }
7731
7732 static ssize_t fan_pwm1_store(struct device *dev,
7733 struct device_attribute *attr,
7734 const char *buf, size_t count)
7735 {
7736 unsigned long s;
7737 int rc;
7738 u8 status, newlevel;
7739
7740 if (parse_strtoul(buf, 255, &s))
7741 return -EINVAL;
7742
7743 tpacpi_disclose_usertask("hwmon pwm1",
7744 "set fan speed to %lu\n", s);
7745
7746 /* scale down from 0-255 to 0-7 */
7747 newlevel = (s >> 5) & 0x07;
7748
7749 if (mutex_lock_killable(&fan_mutex))
7750 return -ERESTARTSYS;
7751
7752 rc = fan_get_status(&status);
7753 if (!rc && (status &
7754 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
7755 rc = fan_set_level(newlevel);
7756 if (rc == -ENXIO)
7757 rc = -EINVAL;
7758 else if (!rc) {
7759 fan_update_desired_level(newlevel);
7760 fan_watchdog_reset();
7761 }
7762 }
7763
7764 mutex_unlock(&fan_mutex);
7765 return (rc)? rc : count;
7766 }
7767
7768 static struct device_attribute dev_attr_fan_pwm1 =
7769 __ATTR(pwm1, S_IWUSR | S_IRUGO,
7770 fan_pwm1_show, fan_pwm1_store);
7771
7772 /* sysfs fan fan1_input ------------------------------------------------ */
7773 static ssize_t fan_fan1_input_show(struct device *dev,
7774 struct device_attribute *attr,
7775 char *buf)
7776 {
7777 int res;
7778 unsigned int speed;
7779
7780 res = fan_get_speed(&speed);
7781 if (res < 0)
7782 return res;
7783
7784 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7785 }
7786
7787 static struct device_attribute dev_attr_fan_fan1_input =
7788 __ATTR(fan1_input, S_IRUGO,
7789 fan_fan1_input_show, NULL);
7790
7791 /* sysfs fan fan2_input ------------------------------------------------ */
7792 static ssize_t fan_fan2_input_show(struct device *dev,
7793 struct device_attribute *attr,
7794 char *buf)
7795 {
7796 int res;
7797 unsigned int speed;
7798
7799 res = fan2_get_speed(&speed);
7800 if (res < 0)
7801 return res;
7802
7803 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
7804 }
7805
7806 static struct device_attribute dev_attr_fan_fan2_input =
7807 __ATTR(fan2_input, S_IRUGO,
7808 fan_fan2_input_show, NULL);
7809
7810 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
7811 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
7812 char *buf)
7813 {
7814 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
7815 }
7816
7817 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
7818 const char *buf, size_t count)
7819 {
7820 unsigned long t;
7821
7822 if (parse_strtoul(buf, 120, &t))
7823 return -EINVAL;
7824
7825 if (!fan_control_allowed)
7826 return -EPERM;
7827
7828 fan_watchdog_maxinterval = t;
7829 fan_watchdog_reset();
7830
7831 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
7832
7833 return count;
7834 }
7835
7836 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
7837 fan_fan_watchdog_show, fan_fan_watchdog_store);
7838
7839 /* --------------------------------------------------------------------- */
7840 static struct attribute *fan_attributes[] = {
7841 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
7842 &dev_attr_fan_fan1_input.attr,
7843 NULL, /* for fan2_input */
7844 NULL
7845 };
7846
7847 static const struct attribute_group fan_attr_group = {
7848 .attrs = fan_attributes,
7849 };
7850
7851 #define TPACPI_FAN_Q1 0x0001 /* Unitialized HFSP */
7852 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */
7853
7854 #define TPACPI_FAN_QI(__id1, __id2, __quirks) \
7855 { .vendor = PCI_VENDOR_ID_IBM, \
7856 .bios = TPACPI_MATCH_ANY, \
7857 .ec = TPID(__id1, __id2), \
7858 .quirks = __quirks }
7859
7860 #define TPACPI_FAN_QL(__id1, __id2, __quirks) \
7861 { .vendor = PCI_VENDOR_ID_LENOVO, \
7862 .bios = TPACPI_MATCH_ANY, \
7863 .ec = TPID(__id1, __id2), \
7864 .quirks = __quirks }
7865
7866 static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
7867 TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
7868 TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
7869 TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
7870 TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
7871 TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
7872 };
7873
7874 #undef TPACPI_FAN_QL
7875 #undef TPACPI_FAN_QI
7876
7877 static int __init fan_init(struct ibm_init_struct *iibm)
7878 {
7879 int rc;
7880 unsigned long quirks;
7881
7882 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7883 "initializing fan subdriver\n");
7884
7885 mutex_init(&fan_mutex);
7886 fan_status_access_mode = TPACPI_FAN_NONE;
7887 fan_control_access_mode = TPACPI_FAN_WR_NONE;
7888 fan_control_commands = 0;
7889 fan_watchdog_maxinterval = 0;
7890 tp_features.fan_ctrl_status_undef = 0;
7891 tp_features.second_fan = 0;
7892 fan_control_desired_level = 7;
7893
7894 TPACPI_ACPIHANDLE_INIT(fans);
7895 TPACPI_ACPIHANDLE_INIT(gfan);
7896 TPACPI_ACPIHANDLE_INIT(sfan);
7897
7898 quirks = tpacpi_check_quirks(fan_quirk_table,
7899 ARRAY_SIZE(fan_quirk_table));
7900
7901 if (gfan_handle) {
7902 /* 570, 600e/x, 770e, 770x */
7903 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
7904 } else {
7905 /* all other ThinkPads: note that even old-style
7906 * ThinkPad ECs supports the fan control register */
7907 if (likely(acpi_ec_read(fan_status_offset,
7908 &fan_control_initial_status))) {
7909 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
7910 if (quirks & TPACPI_FAN_Q1)
7911 fan_quirk1_setup();
7912 if (quirks & TPACPI_FAN_2FAN) {
7913 tp_features.second_fan = 1;
7914 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7915 "secondary fan support enabled\n");
7916 }
7917 } else {
7918 printk(TPACPI_ERR
7919 "ThinkPad ACPI EC access misbehaving, "
7920 "fan status and control unavailable\n");
7921 return 1;
7922 }
7923 }
7924
7925 if (sfan_handle) {
7926 /* 570, 770x-JL */
7927 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
7928 fan_control_commands |=
7929 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
7930 } else {
7931 if (!gfan_handle) {
7932 /* gfan without sfan means no fan control */
7933 /* all other models implement TP EC 0x2f control */
7934
7935 if (fans_handle) {
7936 /* X31, X40, X41 */
7937 fan_control_access_mode =
7938 TPACPI_FAN_WR_ACPI_FANS;
7939 fan_control_commands |=
7940 TPACPI_FAN_CMD_SPEED |
7941 TPACPI_FAN_CMD_LEVEL |
7942 TPACPI_FAN_CMD_ENABLE;
7943 } else {
7944 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
7945 fan_control_commands |=
7946 TPACPI_FAN_CMD_LEVEL |
7947 TPACPI_FAN_CMD_ENABLE;
7948 }
7949 }
7950 }
7951
7952 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7953 "fan is %s, modes %d, %d\n",
7954 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
7955 fan_control_access_mode != TPACPI_FAN_WR_NONE),
7956 fan_status_access_mode, fan_control_access_mode);
7957
7958 /* fan control master switch */
7959 if (!fan_control_allowed) {
7960 fan_control_access_mode = TPACPI_FAN_WR_NONE;
7961 fan_control_commands = 0;
7962 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
7963 "fan control features disabled by parameter\n");
7964 }
7965
7966 /* update fan_control_desired_level */
7967 if (fan_status_access_mode != TPACPI_FAN_NONE)
7968 fan_get_status_safe(NULL);
7969
7970 if (fan_status_access_mode != TPACPI_FAN_NONE ||
7971 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
7972 if (tp_features.second_fan) {
7973 /* attach second fan tachometer */
7974 fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
7975 &dev_attr_fan_fan2_input.attr;
7976 }
7977 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
7978 &fan_attr_group);
7979 if (rc < 0)
7980 return rc;
7981
7982 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
7983 &driver_attr_fan_watchdog);
7984 if (rc < 0) {
7985 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
7986 &fan_attr_group);
7987 return rc;
7988 }
7989 return 0;
7990 } else
7991 return 1;
7992 }
7993
7994 static void fan_exit(void)
7995 {
7996 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
7997 "cancelling any pending fan watchdog tasks\n");
7998
7999 /* FIXME: can we really do this unconditionally? */
8000 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
8001 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
8002 &driver_attr_fan_watchdog);
8003
8004 cancel_delayed_work(&fan_watchdog_task);
8005 flush_workqueue(tpacpi_wq);
8006 }
8007
8008 static void fan_suspend(pm_message_t state)
8009 {
8010 int rc;
8011
8012 if (!fan_control_allowed)
8013 return;
8014
8015 /* Store fan status in cache */
8016 fan_control_resume_level = 0;
8017 rc = fan_get_status_safe(&fan_control_resume_level);
8018 if (rc < 0)
8019 printk(TPACPI_NOTICE
8020 "failed to read fan level for later "
8021 "restore during resume: %d\n", rc);
8022
8023 /* if it is undefined, don't attempt to restore it.
8024 * KEEP THIS LAST */
8025 if (tp_features.fan_ctrl_status_undef)
8026 fan_control_resume_level = 0;
8027 }
8028
8029 static void fan_resume(void)
8030 {
8031 u8 current_level = 7;
8032 bool do_set = false;
8033 int rc;
8034
8035 /* DSDT *always* updates status on resume */
8036 tp_features.fan_ctrl_status_undef = 0;
8037
8038 if (!fan_control_allowed ||
8039 !fan_control_resume_level ||
8040 (fan_get_status_safe(&current_level) < 0))
8041 return;
8042
8043 switch (fan_control_access_mode) {
8044 case TPACPI_FAN_WR_ACPI_SFAN:
8045 /* never decrease fan level */
8046 do_set = (fan_control_resume_level > current_level);
8047 break;
8048 case TPACPI_FAN_WR_ACPI_FANS:
8049 case TPACPI_FAN_WR_TPEC:
8050 /* never decrease fan level, scale is:
8051 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
8052 *
8053 * We expect the firmware to set either 7 or AUTO, but we
8054 * handle FULLSPEED out of paranoia.
8055 *
8056 * So, we can safely only restore FULLSPEED or 7, anything
8057 * else could slow the fan. Restoring AUTO is useless, at
8058 * best that's exactly what the DSDT already set (it is the
8059 * slower it uses).
8060 *
8061 * Always keep in mind that the DSDT *will* have set the
8062 * fans to what the vendor supposes is the best level. We
8063 * muck with it only to speed the fan up.
8064 */
8065 if (fan_control_resume_level != 7 &&
8066 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
8067 return;
8068 else
8069 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
8070 (current_level != fan_control_resume_level);
8071 break;
8072 default:
8073 return;
8074 }
8075 if (do_set) {
8076 printk(TPACPI_NOTICE
8077 "restoring fan level to 0x%02x\n",
8078 fan_control_resume_level);
8079 rc = fan_set_level_safe(fan_control_resume_level);
8080 if (rc < 0)
8081 printk(TPACPI_NOTICE
8082 "failed to restore fan level: %d\n", rc);
8083 }
8084 }
8085
8086 static int fan_read(struct seq_file *m)
8087 {
8088 int rc;
8089 u8 status;
8090 unsigned int speed = 0;
8091
8092 switch (fan_status_access_mode) {
8093 case TPACPI_FAN_RD_ACPI_GFAN:
8094 /* 570, 600e/x, 770e, 770x */
8095 rc = fan_get_status_safe(&status);
8096 if (rc < 0)
8097 return rc;
8098
8099 seq_printf(m, "status:\t\t%s\n"
8100 "level:\t\t%d\n",
8101 (status != 0) ? "enabled" : "disabled", status);
8102 break;
8103
8104 case TPACPI_FAN_RD_TPEC:
8105 /* all except 570, 600e/x, 770e, 770x */
8106 rc = fan_get_status_safe(&status);
8107 if (rc < 0)
8108 return rc;
8109
8110 seq_printf(m, "status:\t\t%s\n",
8111 (status != 0) ? "enabled" : "disabled");
8112
8113 rc = fan_get_speed(&speed);
8114 if (rc < 0)
8115 return rc;
8116
8117 seq_printf(m, "speed:\t\t%d\n", speed);
8118
8119 if (status & TP_EC_FAN_FULLSPEED)
8120 /* Disengaged mode takes precedence */
8121 seq_printf(m, "level:\t\tdisengaged\n");
8122 else if (status & TP_EC_FAN_AUTO)
8123 seq_printf(m, "level:\t\tauto\n");
8124 else
8125 seq_printf(m, "level:\t\t%d\n", status);
8126 break;
8127
8128 case TPACPI_FAN_NONE:
8129 default:
8130 seq_printf(m, "status:\t\tnot supported\n");
8131 }
8132
8133 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
8134 seq_printf(m, "commands:\tlevel <level>");
8135
8136 switch (fan_control_access_mode) {
8137 case TPACPI_FAN_WR_ACPI_SFAN:
8138 seq_printf(m, " (<level> is 0-7)\n");
8139 break;
8140
8141 default:
8142 seq_printf(m, " (<level> is 0-7, "
8143 "auto, disengaged, full-speed)\n");
8144 break;
8145 }
8146 }
8147
8148 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
8149 seq_printf(m, "commands:\tenable, disable\n"
8150 "commands:\twatchdog <timeout> (<timeout> "
8151 "is 0 (off), 1-120 (seconds))\n");
8152
8153 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
8154 seq_printf(m, "commands:\tspeed <speed>"
8155 " (<speed> is 0-65535)\n");
8156
8157 return 0;
8158 }
8159
8160 static int fan_write_cmd_level(const char *cmd, int *rc)
8161 {
8162 int level;
8163
8164 if (strlencmp(cmd, "level auto") == 0)
8165 level = TP_EC_FAN_AUTO;
8166 else if ((strlencmp(cmd, "level disengaged") == 0) |
8167 (strlencmp(cmd, "level full-speed") == 0))
8168 level = TP_EC_FAN_FULLSPEED;
8169 else if (sscanf(cmd, "level %d", &level) != 1)
8170 return 0;
8171
8172 *rc = fan_set_level_safe(level);
8173 if (*rc == -ENXIO)
8174 printk(TPACPI_ERR "level command accepted for unsupported "
8175 "access mode %d", fan_control_access_mode);
8176 else if (!*rc)
8177 tpacpi_disclose_usertask("procfs fan",
8178 "set level to %d\n", level);
8179
8180 return 1;
8181 }
8182
8183 static int fan_write_cmd_enable(const char *cmd, int *rc)
8184 {
8185 if (strlencmp(cmd, "enable") != 0)
8186 return 0;
8187
8188 *rc = fan_set_enable();
8189 if (*rc == -ENXIO)
8190 printk(TPACPI_ERR "enable command accepted for unsupported "
8191 "access mode %d", fan_control_access_mode);
8192 else if (!*rc)
8193 tpacpi_disclose_usertask("procfs fan", "enable\n");
8194
8195 return 1;
8196 }
8197
8198 static int fan_write_cmd_disable(const char *cmd, int *rc)
8199 {
8200 if (strlencmp(cmd, "disable") != 0)
8201 return 0;
8202
8203 *rc = fan_set_disable();
8204 if (*rc == -ENXIO)
8205 printk(TPACPI_ERR "disable command accepted for unsupported "
8206 "access mode %d", fan_control_access_mode);
8207 else if (!*rc)
8208 tpacpi_disclose_usertask("procfs fan", "disable\n");
8209
8210 return 1;
8211 }
8212
8213 static int fan_write_cmd_speed(const char *cmd, int *rc)
8214 {
8215 int speed;
8216
8217 /* TODO:
8218 * Support speed <low> <medium> <high> ? */
8219
8220 if (sscanf(cmd, "speed %d", &speed) != 1)
8221 return 0;
8222
8223 *rc = fan_set_speed(speed);
8224 if (*rc == -ENXIO)
8225 printk(TPACPI_ERR "speed command accepted for unsupported "
8226 "access mode %d", fan_control_access_mode);
8227 else if (!*rc)
8228 tpacpi_disclose_usertask("procfs fan",
8229 "set speed to %d\n", speed);
8230
8231 return 1;
8232 }
8233
8234 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
8235 {
8236 int interval;
8237
8238 if (sscanf(cmd, "watchdog %d", &interval) != 1)
8239 return 0;
8240
8241 if (interval < 0 || interval > 120)
8242 *rc = -EINVAL;
8243 else {
8244 fan_watchdog_maxinterval = interval;
8245 tpacpi_disclose_usertask("procfs fan",
8246 "set watchdog timer to %d\n",
8247 interval);
8248 }
8249
8250 return 1;
8251 }
8252
8253 static int fan_write(char *buf)
8254 {
8255 char *cmd;
8256 int rc = 0;
8257
8258 while (!rc && (cmd = next_cmd(&buf))) {
8259 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
8260 fan_write_cmd_level(cmd, &rc)) &&
8261 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
8262 (fan_write_cmd_enable(cmd, &rc) ||
8263 fan_write_cmd_disable(cmd, &rc) ||
8264 fan_write_cmd_watchdog(cmd, &rc))) &&
8265 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
8266 fan_write_cmd_speed(cmd, &rc))
8267 )
8268 rc = -EINVAL;
8269 else if (!rc)
8270 fan_watchdog_reset();
8271 }
8272
8273 return rc;
8274 }
8275
8276 static struct ibm_struct fan_driver_data = {
8277 .name = "fan",
8278 .read = fan_read,
8279 .write = fan_write,
8280 .exit = fan_exit,
8281 .suspend = fan_suspend,
8282 .resume = fan_resume,
8283 };
8284
8285 /****************************************************************************
8286 ****************************************************************************
8287 *
8288 * Infrastructure
8289 *
8290 ****************************************************************************
8291 ****************************************************************************/
8292
8293 /*
8294 * HKEY event callout for other subdrivers go here
8295 * (yes, it is ugly, but it is quick, safe, and gets the job done
8296 */
8297 static void tpacpi_driver_event(const unsigned int hkey_event)
8298 {
8299 if (ibm_backlight_device) {
8300 switch (hkey_event) {
8301 case TP_HKEY_EV_BRGHT_UP:
8302 case TP_HKEY_EV_BRGHT_DOWN:
8303 tpacpi_brightness_notify_change();
8304 }
8305 }
8306 if (alsa_card) {
8307 switch (hkey_event) {
8308 case TP_HKEY_EV_VOL_UP:
8309 case TP_HKEY_EV_VOL_DOWN:
8310 case TP_HKEY_EV_VOL_MUTE:
8311 volume_alsa_notify_change();
8312 }
8313 }
8314 }
8315
8316 static void hotkey_driver_event(const unsigned int scancode)
8317 {
8318 tpacpi_driver_event(TP_HKEY_EV_HOTKEY_BASE + scancode);
8319 }
8320
8321 /* sysfs name ---------------------------------------------------------- */
8322 static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
8323 struct device_attribute *attr,
8324 char *buf)
8325 {
8326 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
8327 }
8328
8329 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
8330 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
8331
8332 /* --------------------------------------------------------------------- */
8333
8334 /* /proc support */
8335 static struct proc_dir_entry *proc_dir;
8336
8337 /*
8338 * Module and infrastructure proble, init and exit handling
8339 */
8340
8341 static int force_load;
8342
8343 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
8344 static const char * __init str_supported(int is_supported)
8345 {
8346 static char text_unsupported[] __initdata = "not supported";
8347
8348 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
8349 }
8350 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
8351
8352 static void ibm_exit(struct ibm_struct *ibm)
8353 {
8354 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
8355
8356 list_del_init(&ibm->all_drivers);
8357
8358 if (ibm->flags.acpi_notify_installed) {
8359 dbg_printk(TPACPI_DBG_EXIT,
8360 "%s: acpi_remove_notify_handler\n", ibm->name);
8361 BUG_ON(!ibm->acpi);
8362 acpi_remove_notify_handler(*ibm->acpi->handle,
8363 ibm->acpi->type,
8364 dispatch_acpi_notify);
8365 ibm->flags.acpi_notify_installed = 0;
8366 ibm->flags.acpi_notify_installed = 0;
8367 }
8368
8369 if (ibm->flags.proc_created) {
8370 dbg_printk(TPACPI_DBG_EXIT,
8371 "%s: remove_proc_entry\n", ibm->name);
8372 remove_proc_entry(ibm->name, proc_dir);
8373 ibm->flags.proc_created = 0;
8374 }
8375
8376 if (ibm->flags.acpi_driver_registered) {
8377 dbg_printk(TPACPI_DBG_EXIT,
8378 "%s: acpi_bus_unregister_driver\n", ibm->name);
8379 BUG_ON(!ibm->acpi);
8380 acpi_bus_unregister_driver(ibm->acpi->driver);
8381 kfree(ibm->acpi->driver);
8382 ibm->acpi->driver = NULL;
8383 ibm->flags.acpi_driver_registered = 0;
8384 }
8385
8386 if (ibm->flags.init_called && ibm->exit) {
8387 ibm->exit();
8388 ibm->flags.init_called = 0;
8389 }
8390
8391 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
8392 }
8393
8394 static int __init ibm_init(struct ibm_init_struct *iibm)
8395 {
8396 int ret;
8397 struct ibm_struct *ibm = iibm->data;
8398 struct proc_dir_entry *entry;
8399
8400 BUG_ON(ibm == NULL);
8401
8402 INIT_LIST_HEAD(&ibm->all_drivers);
8403
8404 if (ibm->flags.experimental && !experimental)
8405 return 0;
8406
8407 dbg_printk(TPACPI_DBG_INIT,
8408 "probing for %s\n", ibm->name);
8409
8410 if (iibm->init) {
8411 ret = iibm->init(iibm);
8412 if (ret > 0)
8413 return 0; /* probe failed */
8414 if (ret)
8415 return ret;
8416
8417 ibm->flags.init_called = 1;
8418 }
8419
8420 if (ibm->acpi) {
8421 if (ibm->acpi->hid) {
8422 ret = register_tpacpi_subdriver(ibm);
8423 if (ret)
8424 goto err_out;
8425 }
8426
8427 if (ibm->acpi->notify) {
8428 ret = setup_acpi_notify(ibm);
8429 if (ret == -ENODEV) {
8430 printk(TPACPI_NOTICE "disabling subdriver %s\n",
8431 ibm->name);
8432 ret = 0;
8433 goto err_out;
8434 }
8435 if (ret < 0)
8436 goto err_out;
8437 }
8438 }
8439
8440 dbg_printk(TPACPI_DBG_INIT,
8441 "%s installed\n", ibm->name);
8442
8443 if (ibm->read) {
8444 mode_t mode;
8445
8446 mode = S_IRUGO;
8447 if (ibm->write)
8448 mode |= S_IWUSR;
8449 entry = proc_create_data(ibm->name, mode, proc_dir,
8450 &dispatch_proc_fops, ibm);
8451 if (!entry) {
8452 printk(TPACPI_ERR "unable to create proc entry %s\n",
8453 ibm->name);
8454 ret = -ENODEV;
8455 goto err_out;
8456 }
8457 ibm->flags.proc_created = 1;
8458 }
8459
8460 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
8461
8462 return 0;
8463
8464 err_out:
8465 dbg_printk(TPACPI_DBG_INIT,
8466 "%s: at error exit path with result %d\n",
8467 ibm->name, ret);
8468
8469 ibm_exit(ibm);
8470 return (ret < 0)? ret : 0;
8471 }
8472
8473 /* Probing */
8474
8475 static bool __pure __init tpacpi_is_fw_digit(const char c)
8476 {
8477 return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
8478 }
8479
8480 /* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
8481 static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
8482 const char t)
8483 {
8484 return s && strlen(s) >= 8 &&
8485 tpacpi_is_fw_digit(s[0]) &&
8486 tpacpi_is_fw_digit(s[1]) &&
8487 s[2] == t && s[3] == 'T' &&
8488 tpacpi_is_fw_digit(s[4]) &&
8489 tpacpi_is_fw_digit(s[5]) &&
8490 s[6] == 'W' && s[7] == 'W';
8491 }
8492
8493 /* returns 0 - probe ok, or < 0 - probe error.
8494 * Probe ok doesn't mean thinkpad found.
8495 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
8496 static int __must_check __init get_thinkpad_model_data(
8497 struct thinkpad_id_data *tp)
8498 {
8499 const struct dmi_device *dev = NULL;
8500 char ec_fw_string[18];
8501 char const *s;
8502
8503 if (!tp)
8504 return -EINVAL;
8505
8506 memset(tp, 0, sizeof(*tp));
8507
8508 if (dmi_name_in_vendors("IBM"))
8509 tp->vendor = PCI_VENDOR_ID_IBM;
8510 else if (dmi_name_in_vendors("LENOVO"))
8511 tp->vendor = PCI_VENDOR_ID_LENOVO;
8512 else
8513 return 0;
8514
8515 s = dmi_get_system_info(DMI_BIOS_VERSION);
8516 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
8517 if (s && !tp->bios_version_str)
8518 return -ENOMEM;
8519
8520 /* Really ancient ThinkPad 240X will fail this, which is fine */
8521 if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E'))
8522 return 0;
8523
8524 tp->bios_model = tp->bios_version_str[0]
8525 | (tp->bios_version_str[1] << 8);
8526 tp->bios_release = (tp->bios_version_str[4] << 8)
8527 | tp->bios_version_str[5];
8528
8529 /*
8530 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
8531 * X32 or newer, all Z series; Some models must have an
8532 * up-to-date BIOS or they will not be detected.
8533 *
8534 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
8535 */
8536 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
8537 if (sscanf(dev->name,
8538 "IBM ThinkPad Embedded Controller -[%17c",
8539 ec_fw_string) == 1) {
8540 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
8541 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
8542
8543 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
8544 if (!tp->ec_version_str)
8545 return -ENOMEM;
8546
8547 if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
8548 tp->ec_model = ec_fw_string[0]
8549 | (ec_fw_string[1] << 8);
8550 tp->ec_release = (ec_fw_string[4] << 8)
8551 | ec_fw_string[5];
8552 } else {
8553 printk(TPACPI_NOTICE
8554 "ThinkPad firmware release %s "
8555 "doesn't match the known patterns\n",
8556 ec_fw_string);
8557 printk(TPACPI_NOTICE
8558 "please report this to %s\n",
8559 TPACPI_MAIL);
8560 }
8561 break;
8562 }
8563 }
8564
8565 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
8566 if (s && !strnicmp(s, "ThinkPad", 8)) {
8567 tp->model_str = kstrdup(s, GFP_KERNEL);
8568 if (!tp->model_str)
8569 return -ENOMEM;
8570 }
8571
8572 s = dmi_get_system_info(DMI_PRODUCT_NAME);
8573 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
8574 if (s && !tp->nummodel_str)
8575 return -ENOMEM;
8576
8577 return 0;
8578 }
8579
8580 static int __init probe_for_thinkpad(void)
8581 {
8582 int is_thinkpad;
8583
8584 if (acpi_disabled)
8585 return -ENODEV;
8586
8587 /*
8588 * Non-ancient models have better DMI tagging, but very old models
8589 * don't. tpacpi_is_fw_known() is a cheat to help in that case.
8590 */
8591 is_thinkpad = (thinkpad_id.model_str != NULL) ||
8592 (thinkpad_id.ec_model != 0) ||
8593 tpacpi_is_fw_known();
8594
8595 /* ec is required because many other handles are relative to it */
8596 TPACPI_ACPIHANDLE_INIT(ec);
8597 if (!ec_handle) {
8598 if (is_thinkpad)
8599 printk(TPACPI_ERR
8600 "Not yet supported ThinkPad detected!\n");
8601 return -ENODEV;
8602 }
8603
8604 if (!is_thinkpad && !force_load)
8605 return -ENODEV;
8606
8607 return 0;
8608 }
8609
8610
8611 /* Module init, exit, parameters */
8612
8613 static struct ibm_init_struct ibms_init[] __initdata = {
8614 {
8615 .init = thinkpad_acpi_driver_init,
8616 .data = &thinkpad_acpi_driver_data,
8617 },
8618 {
8619 .init = hotkey_init,
8620 .data = &hotkey_driver_data,
8621 },
8622 {
8623 .init = bluetooth_init,
8624 .data = &bluetooth_driver_data,
8625 },
8626 {
8627 .init = wan_init,
8628 .data = &wan_driver_data,
8629 },
8630 {
8631 .init = uwb_init,
8632 .data = &uwb_driver_data,
8633 },
8634 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
8635 {
8636 .init = video_init,
8637 .data = &video_driver_data,
8638 },
8639 #endif
8640 {
8641 .init = light_init,
8642 .data = &light_driver_data,
8643 },
8644 {
8645 .init = cmos_init,
8646 .data = &cmos_driver_data,
8647 },
8648 {
8649 .init = led_init,
8650 .data = &led_driver_data,
8651 },
8652 {
8653 .init = beep_init,
8654 .data = &beep_driver_data,
8655 },
8656 {
8657 .init = thermal_init,
8658 .data = &thermal_driver_data,
8659 },
8660 {
8661 .data = &ecdump_driver_data,
8662 },
8663 {
8664 .init = brightness_init,
8665 .data = &brightness_driver_data,
8666 },
8667 {
8668 .init = volume_init,
8669 .data = &volume_driver_data,
8670 },
8671 {
8672 .init = fan_init,
8673 .data = &fan_driver_data,
8674 },
8675 };
8676
8677 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
8678 {
8679 unsigned int i;
8680 struct ibm_struct *ibm;
8681
8682 if (!kp || !kp->name || !val)
8683 return -EINVAL;
8684
8685 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
8686 ibm = ibms_init[i].data;
8687 WARN_ON(ibm == NULL);
8688
8689 if (!ibm || !ibm->name)
8690 continue;
8691
8692 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
8693 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
8694 return -ENOSPC;
8695 strcpy(ibms_init[i].param, val);
8696 strcat(ibms_init[i].param, ",");
8697 return 0;
8698 }
8699 }
8700
8701 return -EINVAL;
8702 }
8703
8704 module_param(experimental, int, 0444);
8705 MODULE_PARM_DESC(experimental,
8706 "Enables experimental features when non-zero");
8707
8708 module_param_named(debug, dbg_level, uint, 0);
8709 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
8710
8711 module_param(force_load, bool, 0444);
8712 MODULE_PARM_DESC(force_load,
8713 "Attempts to load the driver even on a "
8714 "mis-identified ThinkPad when true");
8715
8716 module_param_named(fan_control, fan_control_allowed, bool, 0444);
8717 MODULE_PARM_DESC(fan_control,
8718 "Enables setting fan parameters features when true");
8719
8720 module_param_named(brightness_mode, brightness_mode, uint, 0444);
8721 MODULE_PARM_DESC(brightness_mode,
8722 "Selects brightness control strategy: "
8723 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
8724
8725 module_param(brightness_enable, uint, 0444);
8726 MODULE_PARM_DESC(brightness_enable,
8727 "Enables backlight control when 1, disables when 0");
8728
8729 module_param(hotkey_report_mode, uint, 0444);
8730 MODULE_PARM_DESC(hotkey_report_mode,
8731 "used for backwards compatibility with userspace, "
8732 "see documentation");
8733
8734 module_param_named(volume_mode, volume_mode, uint, 0444);
8735 MODULE_PARM_DESC(volume_mode,
8736 "Selects volume control strategy: "
8737 "0=auto, 1=EC, 2=N/A, 3=EC+NVRAM");
8738
8739 module_param_named(volume_capabilities, volume_capabilities, uint, 0444);
8740 MODULE_PARM_DESC(volume_capabilities,
8741 "Selects the mixer capabilites: "
8742 "0=auto, 1=volume and mute, 2=mute only");
8743
8744 module_param_named(volume_control, volume_control_allowed, bool, 0444);
8745 MODULE_PARM_DESC(volume_control,
8746 "Enables software override for the console audio "
8747 "control when true");
8748
8749 /* ALSA module API parameters */
8750 module_param_named(index, alsa_index, int, 0444);
8751 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer");
8752 module_param_named(id, alsa_id, charp, 0444);
8753 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer");
8754 module_param_named(enable, alsa_enable, bool, 0444);
8755 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer");
8756
8757 #define TPACPI_PARAM(feature) \
8758 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
8759 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
8760 "at module load, see documentation")
8761
8762 TPACPI_PARAM(hotkey);
8763 TPACPI_PARAM(bluetooth);
8764 TPACPI_PARAM(video);
8765 TPACPI_PARAM(light);
8766 TPACPI_PARAM(cmos);
8767 TPACPI_PARAM(led);
8768 TPACPI_PARAM(beep);
8769 TPACPI_PARAM(ecdump);
8770 TPACPI_PARAM(brightness);
8771 TPACPI_PARAM(volume);
8772 TPACPI_PARAM(fan);
8773
8774 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
8775 module_param(dbg_wlswemul, uint, 0444);
8776 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
8777 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
8778 MODULE_PARM_DESC(wlsw_state,
8779 "Initial state of the emulated WLSW switch");
8780
8781 module_param(dbg_bluetoothemul, uint, 0444);
8782 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
8783 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
8784 MODULE_PARM_DESC(bluetooth_state,
8785 "Initial state of the emulated bluetooth switch");
8786
8787 module_param(dbg_wwanemul, uint, 0444);
8788 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
8789 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
8790 MODULE_PARM_DESC(wwan_state,
8791 "Initial state of the emulated WWAN switch");
8792
8793 module_param(dbg_uwbemul, uint, 0444);
8794 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
8795 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
8796 MODULE_PARM_DESC(uwb_state,
8797 "Initial state of the emulated UWB switch");
8798 #endif
8799
8800 static void thinkpad_acpi_module_exit(void)
8801 {
8802 struct ibm_struct *ibm, *itmp;
8803
8804 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
8805
8806 list_for_each_entry_safe_reverse(ibm, itmp,
8807 &tpacpi_all_drivers,
8808 all_drivers) {
8809 ibm_exit(ibm);
8810 }
8811
8812 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
8813
8814 if (tpacpi_inputdev) {
8815 if (tp_features.input_device_registered)
8816 input_unregister_device(tpacpi_inputdev);
8817 else
8818 input_free_device(tpacpi_inputdev);
8819 }
8820
8821 if (tpacpi_hwmon)
8822 hwmon_device_unregister(tpacpi_hwmon);
8823
8824 if (tp_features.sensors_pdev_attrs_registered)
8825 device_remove_file(&tpacpi_sensors_pdev->dev,
8826 &dev_attr_thinkpad_acpi_pdev_name);
8827 if (tpacpi_sensors_pdev)
8828 platform_device_unregister(tpacpi_sensors_pdev);
8829 if (tpacpi_pdev)
8830 platform_device_unregister(tpacpi_pdev);
8831
8832 if (tp_features.sensors_pdrv_attrs_registered)
8833 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
8834 if (tp_features.platform_drv_attrs_registered)
8835 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
8836
8837 if (tp_features.sensors_pdrv_registered)
8838 platform_driver_unregister(&tpacpi_hwmon_pdriver);
8839
8840 if (tp_features.platform_drv_registered)
8841 platform_driver_unregister(&tpacpi_pdriver);
8842
8843 if (proc_dir)
8844 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
8845
8846 if (tpacpi_wq)
8847 destroy_workqueue(tpacpi_wq);
8848
8849 kfree(thinkpad_id.bios_version_str);
8850 kfree(thinkpad_id.ec_version_str);
8851 kfree(thinkpad_id.model_str);
8852 }
8853
8854
8855 static int __init thinkpad_acpi_module_init(void)
8856 {
8857 int ret, i;
8858
8859 tpacpi_lifecycle = TPACPI_LIFE_INIT;
8860
8861 /* Parameter checking */
8862 if (hotkey_report_mode > 2)
8863 return -EINVAL;
8864
8865 /* Driver-level probe */
8866
8867 ret = get_thinkpad_model_data(&thinkpad_id);
8868 if (ret) {
8869 printk(TPACPI_ERR
8870 "unable to get DMI data: %d\n", ret);
8871 thinkpad_acpi_module_exit();
8872 return ret;
8873 }
8874 ret = probe_for_thinkpad();
8875 if (ret) {
8876 thinkpad_acpi_module_exit();
8877 return ret;
8878 }
8879
8880 /* Driver initialization */
8881
8882 TPACPI_ACPIHANDLE_INIT(ecrd);
8883 TPACPI_ACPIHANDLE_INIT(ecwr);
8884
8885 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
8886 if (!tpacpi_wq) {
8887 thinkpad_acpi_module_exit();
8888 return -ENOMEM;
8889 }
8890
8891 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
8892 if (!proc_dir) {
8893 printk(TPACPI_ERR
8894 "unable to create proc dir " TPACPI_PROC_DIR);
8895 thinkpad_acpi_module_exit();
8896 return -ENODEV;
8897 }
8898 proc_dir->owner = THIS_MODULE;
8899
8900 ret = platform_driver_register(&tpacpi_pdriver);
8901 if (ret) {
8902 printk(TPACPI_ERR
8903 "unable to register main platform driver\n");
8904 thinkpad_acpi_module_exit();
8905 return ret;
8906 }
8907 tp_features.platform_drv_registered = 1;
8908
8909 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
8910 if (ret) {
8911 printk(TPACPI_ERR
8912 "unable to register hwmon platform driver\n");
8913 thinkpad_acpi_module_exit();
8914 return ret;
8915 }
8916 tp_features.sensors_pdrv_registered = 1;
8917
8918 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
8919 if (!ret) {
8920 tp_features.platform_drv_attrs_registered = 1;
8921 ret = tpacpi_create_driver_attributes(
8922 &tpacpi_hwmon_pdriver.driver);
8923 }
8924 if (ret) {
8925 printk(TPACPI_ERR
8926 "unable to create sysfs driver attributes\n");
8927 thinkpad_acpi_module_exit();
8928 return ret;
8929 }
8930 tp_features.sensors_pdrv_attrs_registered = 1;
8931
8932
8933 /* Device initialization */
8934 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
8935 NULL, 0);
8936 if (IS_ERR(tpacpi_pdev)) {
8937 ret = PTR_ERR(tpacpi_pdev);
8938 tpacpi_pdev = NULL;
8939 printk(TPACPI_ERR "unable to register platform device\n");
8940 thinkpad_acpi_module_exit();
8941 return ret;
8942 }
8943 tpacpi_sensors_pdev = platform_device_register_simple(
8944 TPACPI_HWMON_DRVR_NAME,
8945 -1, NULL, 0);
8946 if (IS_ERR(tpacpi_sensors_pdev)) {
8947 ret = PTR_ERR(tpacpi_sensors_pdev);
8948 tpacpi_sensors_pdev = NULL;
8949 printk(TPACPI_ERR
8950 "unable to register hwmon platform device\n");
8951 thinkpad_acpi_module_exit();
8952 return ret;
8953 }
8954 ret = device_create_file(&tpacpi_sensors_pdev->dev,
8955 &dev_attr_thinkpad_acpi_pdev_name);
8956 if (ret) {
8957 printk(TPACPI_ERR
8958 "unable to create sysfs hwmon device attributes\n");
8959 thinkpad_acpi_module_exit();
8960 return ret;
8961 }
8962 tp_features.sensors_pdev_attrs_registered = 1;
8963 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
8964 if (IS_ERR(tpacpi_hwmon)) {
8965 ret = PTR_ERR(tpacpi_hwmon);
8966 tpacpi_hwmon = NULL;
8967 printk(TPACPI_ERR "unable to register hwmon device\n");
8968 thinkpad_acpi_module_exit();
8969 return ret;
8970 }
8971 mutex_init(&tpacpi_inputdev_send_mutex);
8972 tpacpi_inputdev = input_allocate_device();
8973 if (!tpacpi_inputdev) {
8974 printk(TPACPI_ERR "unable to allocate input device\n");
8975 thinkpad_acpi_module_exit();
8976 return -ENOMEM;
8977 } else {
8978 /* Prepare input device, but don't register */
8979 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
8980 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
8981 tpacpi_inputdev->id.bustype = BUS_HOST;
8982 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
8983 thinkpad_id.vendor :
8984 PCI_VENDOR_ID_IBM;
8985 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
8986 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
8987 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev;
8988 }
8989 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
8990 ret = ibm_init(&ibms_init[i]);
8991 if (ret >= 0 && *ibms_init[i].param)
8992 ret = ibms_init[i].data->write(ibms_init[i].param);
8993 if (ret < 0) {
8994 thinkpad_acpi_module_exit();
8995 return ret;
8996 }
8997 }
8998 ret = input_register_device(tpacpi_inputdev);
8999 if (ret < 0) {
9000 printk(TPACPI_ERR "unable to register input device\n");
9001 thinkpad_acpi_module_exit();
9002 return ret;
9003 } else {
9004 tp_features.input_device_registered = 1;
9005 }
9006
9007 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
9008 return 0;
9009 }
9010
9011 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
9012
9013 /*
9014 * This will autoload the driver in almost every ThinkPad
9015 * in widespread use.
9016 *
9017 * Only _VERY_ old models, like the 240, 240x and 570 lack
9018 * the HKEY event interface.
9019 */
9020 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids);
9021
9022 /*
9023 * DMI matching for module autoloading
9024 *
9025 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
9026 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
9027 *
9028 * Only models listed in thinkwiki will be supported, so add yours
9029 * if it is not there yet.
9030 */
9031 #define IBM_BIOS_MODULE_ALIAS(__type) \
9032 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
9033
9034 /* Ancient thinkpad BIOSes have to be identified by
9035 * BIOS type or model number, and there are far less
9036 * BIOS types than model numbers... */
9037 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */
9038
9039 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
9040 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
9041 MODULE_DESCRIPTION(TPACPI_DESC);
9042 MODULE_VERSION(TPACPI_VERSION);
9043 MODULE_LICENSE("GPL");
9044
9045 module_init(thinkpad_acpi_module_init);
9046 module_exit(thinkpad_acpi_module_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree