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thinkpad-acpi: fix use of MODULE_AUTHOR
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / platform / x86 / thinkpad_acpi.c
blob3844ffa13f3d0d138d460bcaf7b916409faf860c
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 "0.22"
25 #define TPACPI_SYSFS_VERSION 0x020300
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/sysfs.h>
65 #include <linux/backlight.h>
66 #include <linux/fb.h>
67 #include <linux/platform_device.h>
68 #include <linux/hwmon.h>
69 #include <linux/hwmon-sysfs.h>
70 #include <linux/input.h>
71 #include <linux/leds.h>
72 #include <linux/rfkill.h>
73 #include <asm/uaccess.h>
74
75 #include <linux/dmi.h>
76 #include <linux/jiffies.h>
77 #include <linux/workqueue.h>
78
79 #include <acpi/acpi_drivers.h>
80
81 #include <linux/pci_ids.h>
82
83
84 /* ThinkPad CMOS commands */
85 #define TP_CMOS_VOLUME_DOWN 0
86 #define TP_CMOS_VOLUME_UP 1
87 #define TP_CMOS_VOLUME_MUTE 2
88 #define TP_CMOS_BRIGHTNESS_UP 4
89 #define TP_CMOS_BRIGHTNESS_DOWN 5
90 #define TP_CMOS_THINKLIGHT_ON 12
91 #define TP_CMOS_THINKLIGHT_OFF 13
92
93 /* NVRAM Addresses */
94 enum tp_nvram_addr {
95 TP_NVRAM_ADDR_HK2 = 0x57,
96 TP_NVRAM_ADDR_THINKLIGHT = 0x58,
97 TP_NVRAM_ADDR_VIDEO = 0x59,
98 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e,
99 TP_NVRAM_ADDR_MIXER = 0x60,
100 };
101
102 /* NVRAM bit masks */
103 enum {
104 TP_NVRAM_MASK_HKT_THINKPAD = 0x08,
105 TP_NVRAM_MASK_HKT_ZOOM = 0x20,
106 TP_NVRAM_MASK_HKT_DISPLAY = 0x40,
107 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80,
108 TP_NVRAM_MASK_THINKLIGHT = 0x10,
109 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30,
110 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20,
111 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f,
112 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0,
113 TP_NVRAM_MASK_MUTE = 0x40,
114 TP_NVRAM_MASK_HKT_VOLUME = 0x80,
115 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f,
116 TP_NVRAM_POS_LEVEL_VOLUME = 0,
117 };
118
119 /* ACPI HIDs */
120 #define TPACPI_ACPI_HKEY_HID "IBM0068"
121
122 /* Input IDs */
123 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */
124 #define TPACPI_HKEY_INPUT_VERSION 0x4101
125
126 /* ACPI \WGSV commands */
127 enum {
128 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */
129 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */
130 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */
131 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */
132 };
133
134 /* TP_ACPI_WGSV_GET_STATE bits */
135 enum {
136 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */
137 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */
138 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */
139 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */
140 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */
141 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */
142 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */
143 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */
144 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */
145 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */
146 };
147
148 /****************************************************************************
149 * Main driver
150 */
151
152 #define TPACPI_NAME "thinkpad"
153 #define TPACPI_DESC "ThinkPad ACPI Extras"
154 #define TPACPI_FILE TPACPI_NAME "_acpi"
155 #define TPACPI_URL "http://ibm-acpi.sf.net/"
156 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net"
157
158 #define TPACPI_PROC_DIR "ibm"
159 #define TPACPI_ACPI_EVENT_PREFIX "ibm"
160 #define TPACPI_DRVR_NAME TPACPI_FILE
161 #define TPACPI_DRVR_SHORTNAME "tpacpi"
162 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon"
163
164 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd"
165 #define TPACPI_WORKQUEUE_NAME "ktpacpid"
166
167 #define TPACPI_MAX_ACPI_ARGS 3
168
169 /* rfkill switches */
170 enum {
171 TPACPI_RFK_BLUETOOTH_SW_ID = 0,
172 TPACPI_RFK_WWAN_SW_ID,
173 TPACPI_RFK_UWB_SW_ID,
174 };
175
176 /* printk headers */
177 #define TPACPI_LOG TPACPI_FILE ": "
178 #define TPACPI_EMERG KERN_EMERG TPACPI_LOG
179 #define TPACPI_ALERT KERN_ALERT TPACPI_LOG
180 #define TPACPI_CRIT KERN_CRIT TPACPI_LOG
181 #define TPACPI_ERR KERN_ERR TPACPI_LOG
182 #define TPACPI_WARN KERN_WARNING TPACPI_LOG
183 #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG
184 #define TPACPI_INFO KERN_INFO TPACPI_LOG
185 #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG
186
187 /* Debugging printk groups */
188 #define TPACPI_DBG_ALL 0xffff
189 #define TPACPI_DBG_DISCLOSETASK 0x8000
190 #define TPACPI_DBG_INIT 0x0001
191 #define TPACPI_DBG_EXIT 0x0002
192 #define TPACPI_DBG_RFKILL 0x0004
193 #define TPACPI_DBG_HKEY 0x0008
194 #define TPACPI_DBG_FAN 0x0010
195 #define TPACPI_DBG_BRGHT 0x0020
196
197 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
198 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
199 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
200
201
202 /****************************************************************************
203 * Driver-wide structs and misc. variables
204 */
205
206 struct ibm_struct;
207
208 struct tp_acpi_drv_struct {
209 const struct acpi_device_id *hid;
210 struct acpi_driver *driver;
211
212 void (*notify) (struct ibm_struct *, u32);
213 acpi_handle *handle;
214 u32 type;
215 struct acpi_device *device;
216 };
217
218 struct ibm_struct {
219 char *name;
220
221 int (*read) (char *);
222 int (*write) (char *);
223 void (*exit) (void);
224 void (*resume) (void);
225 void (*suspend) (pm_message_t state);
226 void (*shutdown) (void);
227
228 struct list_head all_drivers;
229
230 struct tp_acpi_drv_struct *acpi;
231
232 struct {
233 u8 acpi_driver_registered:1;
234 u8 acpi_notify_installed:1;
235 u8 proc_created:1;
236 u8 init_called:1;
237 u8 experimental:1;
238 } flags;
239 };
240
241 struct ibm_init_struct {
242 char param[32];
243
244 int (*init) (struct ibm_init_struct *);
245 struct ibm_struct *data;
246 };
247
248 static struct {
249 #ifdef CONFIG_THINKPAD_ACPI_BAY
250 u32 bay_status:1;
251 u32 bay_eject:1;
252 u32 bay_status2:1;
253 u32 bay_eject2:1;
254 #endif
255 u32 bluetooth:1;
256 u32 hotkey:1;
257 u32 hotkey_mask:1;
258 u32 hotkey_wlsw:1;
259 u32 hotkey_tablet:1;
260 u32 light:1;
261 u32 light_status:1;
262 u32 bright_16levels:1;
263 u32 bright_acpimode:1;
264 u32 wan:1;
265 u32 uwb:1;
266 u32 fan_ctrl_status_undef:1;
267 u32 input_device_registered:1;
268 u32 platform_drv_registered:1;
269 u32 platform_drv_attrs_registered:1;
270 u32 sensors_pdrv_registered:1;
271 u32 sensors_pdrv_attrs_registered:1;
272 u32 sensors_pdev_attrs_registered:1;
273 u32 hotkey_poll_active:1;
274 } tp_features;
275
276 static struct {
277 u16 hotkey_mask_ff:1;
278 } tp_warned;
279
280 struct thinkpad_id_data {
281 unsigned int vendor; /* ThinkPad vendor:
282 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
283
284 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
285 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
286
287 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
288 u16 ec_model;
289
290 char *model_str; /* ThinkPad T43 */
291 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
292 };
293 static struct thinkpad_id_data thinkpad_id;
294
295 static enum {
296 TPACPI_LIFE_INIT = 0,
297 TPACPI_LIFE_RUNNING,
298 TPACPI_LIFE_EXITING,
299 } tpacpi_lifecycle;
300
301 static int experimental;
302 static u32 dbg_level;
303
304 static struct workqueue_struct *tpacpi_wq;
305
306 enum led_status_t {
307 TPACPI_LED_OFF = 0,
308 TPACPI_LED_ON,
309 TPACPI_LED_BLINK,
310 };
311
312 /* Special LED class that can defer work */
313 struct tpacpi_led_classdev {
314 struct led_classdev led_classdev;
315 struct work_struct work;
316 enum led_status_t new_state;
317 unsigned int led;
318 };
319
320 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
321 static int dbg_wlswemul;
322 static int tpacpi_wlsw_emulstate;
323 static int dbg_bluetoothemul;
324 static int tpacpi_bluetooth_emulstate;
325 static int dbg_wwanemul;
326 static int tpacpi_wwan_emulstate;
327 static int dbg_uwbemul;
328 static int tpacpi_uwb_emulstate;
329 #endif
330
331
332 /*************************************************************************
333 * Debugging helpers
334 */
335
336 #define dbg_printk(a_dbg_level, format, arg...) \
337 do { if (dbg_level & (a_dbg_level)) \
338 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
339 } while (0)
340
341 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
342 #define vdbg_printk dbg_printk
343 static const char *str_supported(int is_supported);
344 #else
345 #define vdbg_printk(a_dbg_level, format, arg...) \
346 do { } while (0)
347 #endif
348
349 static void tpacpi_log_usertask(const char * const what)
350 {
351 printk(TPACPI_DEBUG "%s: access by process with PID %d\n",
352 what, task_tgid_vnr(current));
353 }
354
355 #define tpacpi_disclose_usertask(what, format, arg...) \
356 do { \
357 if (unlikely( \
358 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
359 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
360 printk(TPACPI_DEBUG "%s: PID %d: " format, \
361 what, task_tgid_vnr(current), ## arg); \
362 } \
363 } while (0)
364
365 /****************************************************************************
366 ****************************************************************************
367 *
368 * ACPI Helpers and device model
369 *
370 ****************************************************************************
371 ****************************************************************************/
372
373 /*************************************************************************
374 * ACPI basic handles
375 */
376
377 static acpi_handle root_handle;
378
379 #define TPACPI_HANDLE(object, parent, paths...) \
380 static acpi_handle object##_handle; \
381 static acpi_handle *object##_parent = &parent##_handle; \
382 static char *object##_path; \
383 static char *object##_paths[] = { paths }
384
385 TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
386 "\\_SB.PCI.ISA.EC", /* 570 */
387 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
388 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
389 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
390 "\\_SB.PCI0.ICH3.EC0", /* R31 */
391 "\\_SB.PCI0.LPC.EC", /* all others */
392 );
393
394 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
395 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
396
397 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
398 /* T4x, X31, X40 */
399 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
400 "\\CMS", /* R40, R40e */
401 ); /* all others */
402
403 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
404 "^HKEY", /* R30, R31 */
405 "HKEY", /* all others */
406 ); /* 570 */
407
408 TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
409 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
410 "\\_SB.PCI0.VID0", /* 770e */
411 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
412 "\\_SB.PCI0.AGP.VID", /* all others */
413 ); /* R30, R31 */
414
415
416 /*************************************************************************
417 * ACPI helpers
418 */
419
420 static int acpi_evalf(acpi_handle handle,
421 void *res, char *method, char *fmt, ...)
422 {
423 char *fmt0 = fmt;
424 struct acpi_object_list params;
425 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
426 struct acpi_buffer result, *resultp;
427 union acpi_object out_obj;
428 acpi_status status;
429 va_list ap;
430 char res_type;
431 int success;
432 int quiet;
433
434 if (!*fmt) {
435 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
436 return 0;
437 }
438
439 if (*fmt == 'q') {
440 quiet = 1;
441 fmt++;
442 } else
443 quiet = 0;
444
445 res_type = *(fmt++);
446
447 params.count = 0;
448 params.pointer = &in_objs[0];
449
450 va_start(ap, fmt);
451 while (*fmt) {
452 char c = *(fmt++);
453 switch (c) {
454 case 'd': /* int */
455 in_objs[params.count].integer.value = va_arg(ap, int);
456 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
457 break;
458 /* add more types as needed */
459 default:
460 printk(TPACPI_ERR "acpi_evalf() called "
461 "with invalid format character '%c'\n", c);
462 return 0;
463 }
464 }
465 va_end(ap);
466
467 if (res_type != 'v') {
468 result.length = sizeof(out_obj);
469 result.pointer = &out_obj;
470 resultp = &result;
471 } else
472 resultp = NULL;
473
474 status = acpi_evaluate_object(handle, method, &params, resultp);
475
476 switch (res_type) {
477 case 'd': /* int */
478 if (res)
479 *(int *)res = out_obj.integer.value;
480 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
481 break;
482 case 'v': /* void */
483 success = status == AE_OK;
484 break;
485 /* add more types as needed */
486 default:
487 printk(TPACPI_ERR "acpi_evalf() called "
488 "with invalid format character '%c'\n", res_type);
489 return 0;
490 }
491
492 if (!success && !quiet)
493 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
494 method, fmt0, status);
495
496 return success;
497 }
498
499 static int acpi_ec_read(int i, u8 *p)
500 {
501 int v;
502
503 if (ecrd_handle) {
504 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
505 return 0;
506 *p = v;
507 } else {
508 if (ec_read(i, p) < 0)
509 return 0;
510 }
511
512 return 1;
513 }
514
515 static int acpi_ec_write(int i, u8 v)
516 {
517 if (ecwr_handle) {
518 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
519 return 0;
520 } else {
521 if (ec_write(i, v) < 0)
522 return 0;
523 }
524
525 return 1;
526 }
527
528 #if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
529 static int _sta(acpi_handle handle)
530 {
531 int status;
532
533 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
534 status = 0;
535
536 return status;
537 }
538 #endif
539
540 static int issue_thinkpad_cmos_command(int cmos_cmd)
541 {
542 if (!cmos_handle)
543 return -ENXIO;
544
545 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
546 return -EIO;
547
548 return 0;
549 }
550
551 /*************************************************************************
552 * ACPI device model
553 */
554
555 #define TPACPI_ACPIHANDLE_INIT(object) \
556 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
557 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
558
559 static void drv_acpi_handle_init(char *name,
560 acpi_handle *handle, acpi_handle parent,
561 char **paths, int num_paths, char **path)
562 {
563 int i;
564 acpi_status status;
565
566 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
567 name);
568
569 for (i = 0; i < num_paths; i++) {
570 status = acpi_get_handle(parent, paths[i], handle);
571 if (ACPI_SUCCESS(status)) {
572 *path = paths[i];
573 dbg_printk(TPACPI_DBG_INIT,
574 "Found ACPI handle %s for %s\n",
575 *path, name);
576 return;
577 }
578 }
579
580 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
581 name);
582 *handle = NULL;
583 }
584
585 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
586 {
587 struct ibm_struct *ibm = data;
588
589 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
590 return;
591
592 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
593 return;
594
595 ibm->acpi->notify(ibm, event);
596 }
597
598 static int __init setup_acpi_notify(struct ibm_struct *ibm)
599 {
600 acpi_status status;
601 int rc;
602
603 BUG_ON(!ibm->acpi);
604
605 if (!*ibm->acpi->handle)
606 return 0;
607
608 vdbg_printk(TPACPI_DBG_INIT,
609 "setting up ACPI notify for %s\n", ibm->name);
610
611 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
612 if (rc < 0) {
613 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
614 ibm->name, rc);
615 return -ENODEV;
616 }
617
618 ibm->acpi->device->driver_data = ibm;
619 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
620 TPACPI_ACPI_EVENT_PREFIX,
621 ibm->name);
622
623 status = acpi_install_notify_handler(*ibm->acpi->handle,
624 ibm->acpi->type, dispatch_acpi_notify, ibm);
625 if (ACPI_FAILURE(status)) {
626 if (status == AE_ALREADY_EXISTS) {
627 printk(TPACPI_NOTICE
628 "another device driver is already "
629 "handling %s events\n", ibm->name);
630 } else {
631 printk(TPACPI_ERR
632 "acpi_install_notify_handler(%s) failed: %d\n",
633 ibm->name, status);
634 }
635 return -ENODEV;
636 }
637 ibm->flags.acpi_notify_installed = 1;
638 return 0;
639 }
640
641 static int __init tpacpi_device_add(struct acpi_device *device)
642 {
643 return 0;
644 }
645
646 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
647 {
648 int rc;
649
650 dbg_printk(TPACPI_DBG_INIT,
651 "registering %s as an ACPI driver\n", ibm->name);
652
653 BUG_ON(!ibm->acpi);
654
655 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
656 if (!ibm->acpi->driver) {
657 printk(TPACPI_ERR
658 "failed to allocate memory for ibm->acpi->driver\n");
659 return -ENOMEM;
660 }
661
662 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
663 ibm->acpi->driver->ids = ibm->acpi->hid;
664
665 ibm->acpi->driver->ops.add = &tpacpi_device_add;
666
667 rc = acpi_bus_register_driver(ibm->acpi->driver);
668 if (rc < 0) {
669 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
670 ibm->name, rc);
671 kfree(ibm->acpi->driver);
672 ibm->acpi->driver = NULL;
673 } else if (!rc)
674 ibm->flags.acpi_driver_registered = 1;
675
676 return rc;
677 }
678
679
680 /****************************************************************************
681 ****************************************************************************
682 *
683 * Procfs Helpers
684 *
685 ****************************************************************************
686 ****************************************************************************/
687
688 static int dispatch_procfs_read(char *page, char **start, off_t off,
689 int count, int *eof, void *data)
690 {
691 struct ibm_struct *ibm = data;
692 int len;
693
694 if (!ibm || !ibm->read)
695 return -EINVAL;
696
697 len = ibm->read(page);
698 if (len < 0)
699 return len;
700
701 if (len <= off + count)
702 *eof = 1;
703 *start = page + off;
704 len -= off;
705 if (len > count)
706 len = count;
707 if (len < 0)
708 len = 0;
709
710 return len;
711 }
712
713 static int dispatch_procfs_write(struct file *file,
714 const char __user *userbuf,
715 unsigned long count, void *data)
716 {
717 struct ibm_struct *ibm = data;
718 char *kernbuf;
719 int ret;
720
721 if (!ibm || !ibm->write)
722 return -EINVAL;
723
724 kernbuf = kmalloc(count + 2, GFP_KERNEL);
725 if (!kernbuf)
726 return -ENOMEM;
727
728 if (copy_from_user(kernbuf, userbuf, count)) {
729 kfree(kernbuf);
730 return -EFAULT;
731 }
732
733 kernbuf[count] = 0;
734 strcat(kernbuf, ",");
735 ret = ibm->write(kernbuf);
736 if (ret == 0)
737 ret = count;
738
739 kfree(kernbuf);
740
741 return ret;
742 }
743
744 static char *next_cmd(char **cmds)
745 {
746 char *start = *cmds;
747 char *end;
748
749 while ((end = strchr(start, ',')) && end == start)
750 start = end + 1;
751
752 if (!end)
753 return NULL;
754
755 *end = 0;
756 *cmds = end + 1;
757 return start;
758 }
759
760
761 /****************************************************************************
762 ****************************************************************************
763 *
764 * Device model: input, hwmon and platform
765 *
766 ****************************************************************************
767 ****************************************************************************/
768
769 static struct platform_device *tpacpi_pdev;
770 static struct platform_device *tpacpi_sensors_pdev;
771 static struct device *tpacpi_hwmon;
772 static struct input_dev *tpacpi_inputdev;
773 static struct mutex tpacpi_inputdev_send_mutex;
774 static LIST_HEAD(tpacpi_all_drivers);
775
776 static int tpacpi_suspend_handler(struct platform_device *pdev,
777 pm_message_t state)
778 {
779 struct ibm_struct *ibm, *itmp;
780
781 list_for_each_entry_safe(ibm, itmp,
782 &tpacpi_all_drivers,
783 all_drivers) {
784 if (ibm->suspend)
785 (ibm->suspend)(state);
786 }
787
788 return 0;
789 }
790
791 static int tpacpi_resume_handler(struct platform_device *pdev)
792 {
793 struct ibm_struct *ibm, *itmp;
794
795 list_for_each_entry_safe(ibm, itmp,
796 &tpacpi_all_drivers,
797 all_drivers) {
798 if (ibm->resume)
799 (ibm->resume)();
800 }
801
802 return 0;
803 }
804
805 static void tpacpi_shutdown_handler(struct platform_device *pdev)
806 {
807 struct ibm_struct *ibm, *itmp;
808
809 list_for_each_entry_safe(ibm, itmp,
810 &tpacpi_all_drivers,
811 all_drivers) {
812 if (ibm->shutdown)
813 (ibm->shutdown)();
814 }
815 }
816
817 static struct platform_driver tpacpi_pdriver = {
818 .driver = {
819 .name = TPACPI_DRVR_NAME,
820 .owner = THIS_MODULE,
821 },
822 .suspend = tpacpi_suspend_handler,
823 .resume = tpacpi_resume_handler,
824 .shutdown = tpacpi_shutdown_handler,
825 };
826
827 static struct platform_driver tpacpi_hwmon_pdriver = {
828 .driver = {
829 .name = TPACPI_HWMON_DRVR_NAME,
830 .owner = THIS_MODULE,
831 },
832 };
833
834 /*************************************************************************
835 * sysfs support helpers
836 */
837
838 struct attribute_set {
839 unsigned int members, max_members;
840 struct attribute_group group;
841 };
842
843 struct attribute_set_obj {
844 struct attribute_set s;
845 struct attribute *a;
846 } __attribute__((packed));
847
848 static struct attribute_set *create_attr_set(unsigned int max_members,
849 const char *name)
850 {
851 struct attribute_set_obj *sobj;
852
853 if (max_members == 0)
854 return NULL;
855
856 /* Allocates space for implicit NULL at the end too */
857 sobj = kzalloc(sizeof(struct attribute_set_obj) +
858 max_members * sizeof(struct attribute *),
859 GFP_KERNEL);
860 if (!sobj)
861 return NULL;
862 sobj->s.max_members = max_members;
863 sobj->s.group.attrs = &sobj->a;
864 sobj->s.group.name = name;
865
866 return &sobj->s;
867 }
868
869 #define destroy_attr_set(_set) \
870 kfree(_set);
871
872 /* not multi-threaded safe, use it in a single thread per set */
873 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
874 {
875 if (!s || !attr)
876 return -EINVAL;
877
878 if (s->members >= s->max_members)
879 return -ENOMEM;
880
881 s->group.attrs[s->members] = attr;
882 s->members++;
883
884 return 0;
885 }
886
887 static int add_many_to_attr_set(struct attribute_set *s,
888 struct attribute **attr,
889 unsigned int count)
890 {
891 int i, res;
892
893 for (i = 0; i < count; i++) {
894 res = add_to_attr_set(s, attr[i]);
895 if (res)
896 return res;
897 }
898
899 return 0;
900 }
901
902 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
903 {
904 sysfs_remove_group(kobj, &s->group);
905 destroy_attr_set(s);
906 }
907
908 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
909 sysfs_create_group(_kobj, &_attr_set->group)
910
911 static int parse_strtoul(const char *buf,
912 unsigned long max, unsigned long *value)
913 {
914 char *endp;
915
916 while (*buf && isspace(*buf))
917 buf++;
918 *value = simple_strtoul(buf, &endp, 0);
919 while (*endp && isspace(*endp))
920 endp++;
921 if (*endp || *value > max)
922 return -EINVAL;
923
924 return 0;
925 }
926
927 static void tpacpi_disable_brightness_delay(void)
928 {
929 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
930 printk(TPACPI_NOTICE
931 "ACPI backlight control delay disabled\n");
932 }
933
934 static int __init tpacpi_query_bcl_levels(acpi_handle handle)
935 {
936 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
937 union acpi_object *obj;
938 int rc;
939
940 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
941 obj = (union acpi_object *)buffer.pointer;
942 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
943 printk(TPACPI_ERR "Unknown _BCL data, "
944 "please report this to %s\n", TPACPI_MAIL);
945 rc = 0;
946 } else {
947 rc = obj->package.count;
948 }
949 } else {
950 return 0;
951 }
952
953 kfree(buffer.pointer);
954 return rc;
955 }
956
957 static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
958 u32 lvl, void *context, void **rv)
959 {
960 char name[ACPI_PATH_SEGMENT_LENGTH];
961 struct acpi_buffer buffer = { sizeof(name), &name };
962
963 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
964 !strncmp("_BCL", name, sizeof(name) - 1)) {
965 BUG_ON(!rv || !*rv);
966 **(int **)rv = tpacpi_query_bcl_levels(handle);
967 return AE_CTRL_TERMINATE;
968 } else {
969 return AE_OK;
970 }
971 }
972
973 /*
974 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
975 */
976 static int __init tpacpi_check_std_acpi_brightness_support(void)
977 {
978 int status;
979 int bcl_levels = 0;
980 void *bcl_ptr = &bcl_levels;
981
982 if (!vid_handle) {
983 TPACPI_ACPIHANDLE_INIT(vid);
984 }
985 if (!vid_handle)
986 return 0;
987
988 /*
989 * Search for a _BCL method, and execute it. This is safe on all
990 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
991 * BIOS in ACPI backlight control mode. We do NOT have to care
992 * about calling the _BCL method in an enabled video device, any
993 * will do for our purposes.
994 */
995
996 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
997 tpacpi_acpi_walk_find_bcl, NULL,
998 &bcl_ptr);
999
1000 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
1001 tp_features.bright_acpimode = 1;
1002 return (bcl_levels - 2);
1003 }
1004
1005 return 0;
1006 }
1007
1008 static int __init tpacpi_new_rfkill(const unsigned int id,
1009 struct rfkill **rfk,
1010 const enum rfkill_type rfktype,
1011 const char *name,
1012 const bool set_default,
1013 int (*toggle_radio)(void *, enum rfkill_state),
1014 int (*get_state)(void *, enum rfkill_state *))
1015 {
1016 int res;
1017 enum rfkill_state initial_state = RFKILL_STATE_SOFT_BLOCKED;
1018
1019 res = get_state(NULL, &initial_state);
1020 if (res < 0) {
1021 printk(TPACPI_ERR
1022 "failed to read initial state for %s, error %d; "
1023 "will turn radio off\n", name, res);
1024 } else if (set_default) {
1025 /* try to set the initial state as the default for the rfkill
1026 * type, since we ask the firmware to preserve it across S5 in
1027 * NVRAM */
1028 if (rfkill_set_default(rfktype,
1029 (initial_state == RFKILL_STATE_UNBLOCKED) ?
1030 RFKILL_STATE_UNBLOCKED :
1031 RFKILL_STATE_SOFT_BLOCKED) == -EPERM)
1032 vdbg_printk(TPACPI_DBG_RFKILL,
1033 "Default state for %s cannot be changed\n",
1034 name);
1035 }
1036
1037 *rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype);
1038 if (!*rfk) {
1039 printk(TPACPI_ERR
1040 "failed to allocate memory for rfkill class\n");
1041 return -ENOMEM;
1042 }
1043
1044 (*rfk)->name = name;
1045 (*rfk)->get_state = get_state;
1046 (*rfk)->toggle_radio = toggle_radio;
1047 (*rfk)->state = initial_state;
1048
1049 res = rfkill_register(*rfk);
1050 if (res < 0) {
1051 printk(TPACPI_ERR
1052 "failed to register %s rfkill switch: %d\n",
1053 name, res);
1054 rfkill_free(*rfk);
1055 *rfk = NULL;
1056 return res;
1057 }
1058
1059 return 0;
1060 }
1061
1062 static void printk_deprecated_attribute(const char * const what,
1063 const char * const details)
1064 {
1065 tpacpi_log_usertask("deprecated sysfs attribute");
1066 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
1067 "will be removed. %s\n",
1068 what, details);
1069 }
1070
1071 static void printk_deprecated_rfkill_attribute(const char * const what)
1072 {
1073 printk_deprecated_attribute(what,
1074 "Please switch to generic rfkill before year 2010");
1075 }
1076
1077 /*************************************************************************
1078 * thinkpad-acpi driver attributes
1079 */
1080
1081 /* interface_version --------------------------------------------------- */
1082 static ssize_t tpacpi_driver_interface_version_show(
1083 struct device_driver *drv,
1084 char *buf)
1085 {
1086 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1087 }
1088
1089 static DRIVER_ATTR(interface_version, S_IRUGO,
1090 tpacpi_driver_interface_version_show, NULL);
1091
1092 /* debug_level --------------------------------------------------------- */
1093 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1094 char *buf)
1095 {
1096 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1097 }
1098
1099 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1100 const char *buf, size_t count)
1101 {
1102 unsigned long t;
1103
1104 if (parse_strtoul(buf, 0xffff, &t))
1105 return -EINVAL;
1106
1107 dbg_level = t;
1108
1109 return count;
1110 }
1111
1112 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1113 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1114
1115 /* version ------------------------------------------------------------- */
1116 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1117 char *buf)
1118 {
1119 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1120 TPACPI_DESC, TPACPI_VERSION);
1121 }
1122
1123 static DRIVER_ATTR(version, S_IRUGO,
1124 tpacpi_driver_version_show, NULL);
1125
1126 /* --------------------------------------------------------------------- */
1127
1128 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1129
1130 static void tpacpi_send_radiosw_update(void);
1131
1132 /* wlsw_emulstate ------------------------------------------------------ */
1133 static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1134 char *buf)
1135 {
1136 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1137 }
1138
1139 static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1140 const char *buf, size_t count)
1141 {
1142 unsigned long t;
1143
1144 if (parse_strtoul(buf, 1, &t))
1145 return -EINVAL;
1146
1147 if (tpacpi_wlsw_emulstate != t) {
1148 tpacpi_wlsw_emulstate = !!t;
1149 tpacpi_send_radiosw_update();
1150 } else
1151 tpacpi_wlsw_emulstate = !!t;
1152
1153 return count;
1154 }
1155
1156 static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1157 tpacpi_driver_wlsw_emulstate_show,
1158 tpacpi_driver_wlsw_emulstate_store);
1159
1160 /* bluetooth_emulstate ------------------------------------------------- */
1161 static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1162 struct device_driver *drv,
1163 char *buf)
1164 {
1165 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1166 }
1167
1168 static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1169 struct device_driver *drv,
1170 const char *buf, size_t count)
1171 {
1172 unsigned long t;
1173
1174 if (parse_strtoul(buf, 1, &t))
1175 return -EINVAL;
1176
1177 tpacpi_bluetooth_emulstate = !!t;
1178
1179 return count;
1180 }
1181
1182 static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1183 tpacpi_driver_bluetooth_emulstate_show,
1184 tpacpi_driver_bluetooth_emulstate_store);
1185
1186 /* wwan_emulstate ------------------------------------------------- */
1187 static ssize_t tpacpi_driver_wwan_emulstate_show(
1188 struct device_driver *drv,
1189 char *buf)
1190 {
1191 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1192 }
1193
1194 static ssize_t tpacpi_driver_wwan_emulstate_store(
1195 struct device_driver *drv,
1196 const char *buf, size_t count)
1197 {
1198 unsigned long t;
1199
1200 if (parse_strtoul(buf, 1, &t))
1201 return -EINVAL;
1202
1203 tpacpi_wwan_emulstate = !!t;
1204
1205 return count;
1206 }
1207
1208 static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1209 tpacpi_driver_wwan_emulstate_show,
1210 tpacpi_driver_wwan_emulstate_store);
1211
1212 /* uwb_emulstate ------------------------------------------------- */
1213 static ssize_t tpacpi_driver_uwb_emulstate_show(
1214 struct device_driver *drv,
1215 char *buf)
1216 {
1217 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1218 }
1219
1220 static ssize_t tpacpi_driver_uwb_emulstate_store(
1221 struct device_driver *drv,
1222 const char *buf, size_t count)
1223 {
1224 unsigned long t;
1225
1226 if (parse_strtoul(buf, 1, &t))
1227 return -EINVAL;
1228
1229 tpacpi_uwb_emulstate = !!t;
1230
1231 return count;
1232 }
1233
1234 static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1235 tpacpi_driver_uwb_emulstate_show,
1236 tpacpi_driver_uwb_emulstate_store);
1237 #endif
1238
1239 /* --------------------------------------------------------------------- */
1240
1241 static struct driver_attribute *tpacpi_driver_attributes[] = {
1242 &driver_attr_debug_level, &driver_attr_version,
1243 &driver_attr_interface_version,
1244 };
1245
1246 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1247 {
1248 int i, res;
1249
1250 i = 0;
1251 res = 0;
1252 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1253 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1254 i++;
1255 }
1256
1257 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1258 if (!res && dbg_wlswemul)
1259 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1260 if (!res && dbg_bluetoothemul)
1261 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1262 if (!res && dbg_wwanemul)
1263 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
1264 if (!res && dbg_uwbemul)
1265 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
1266 #endif
1267
1268 return res;
1269 }
1270
1271 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1272 {
1273 int i;
1274
1275 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
1276 driver_remove_file(drv, tpacpi_driver_attributes[i]);
1277
1278 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1279 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1280 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1281 driver_remove_file(drv, &driver_attr_wwan_emulstate);
1282 driver_remove_file(drv, &driver_attr_uwb_emulstate);
1283 #endif
1284 }
1285
1286 /****************************************************************************
1287 ****************************************************************************
1288 *
1289 * Subdrivers
1290 *
1291 ****************************************************************************
1292 ****************************************************************************/
1293
1294 /*************************************************************************
1295 * thinkpad-acpi init subdriver
1296 */
1297
1298 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1299 {
1300 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1301 printk(TPACPI_INFO "%s\n", TPACPI_URL);
1302
1303 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
1304 (thinkpad_id.bios_version_str) ?
1305 thinkpad_id.bios_version_str : "unknown",
1306 (thinkpad_id.ec_version_str) ?
1307 thinkpad_id.ec_version_str : "unknown");
1308
1309 if (thinkpad_id.vendor && thinkpad_id.model_str)
1310 printk(TPACPI_INFO "%s %s, model %s\n",
1311 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1312 "IBM" : ((thinkpad_id.vendor ==
1313 PCI_VENDOR_ID_LENOVO) ?
1314 "Lenovo" : "Unknown vendor"),
1315 thinkpad_id.model_str,
1316 (thinkpad_id.nummodel_str) ?
1317 thinkpad_id.nummodel_str : "unknown");
1318
1319 return 0;
1320 }
1321
1322 static int thinkpad_acpi_driver_read(char *p)
1323 {
1324 int len = 0;
1325
1326 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1327 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1328
1329 return len;
1330 }
1331
1332 static struct ibm_struct thinkpad_acpi_driver_data = {
1333 .name = "driver",
1334 .read = thinkpad_acpi_driver_read,
1335 };
1336
1337 /*************************************************************************
1338 * Hotkey subdriver
1339 */
1340
1341 enum { /* hot key scan codes (derived from ACPI DSDT) */
1342 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1343 TP_ACPI_HOTKEYSCAN_FNF2,
1344 TP_ACPI_HOTKEYSCAN_FNF3,
1345 TP_ACPI_HOTKEYSCAN_FNF4,
1346 TP_ACPI_HOTKEYSCAN_FNF5,
1347 TP_ACPI_HOTKEYSCAN_FNF6,
1348 TP_ACPI_HOTKEYSCAN_FNF7,
1349 TP_ACPI_HOTKEYSCAN_FNF8,
1350 TP_ACPI_HOTKEYSCAN_FNF9,
1351 TP_ACPI_HOTKEYSCAN_FNF10,
1352 TP_ACPI_HOTKEYSCAN_FNF11,
1353 TP_ACPI_HOTKEYSCAN_FNF12,
1354 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1355 TP_ACPI_HOTKEYSCAN_FNINSERT,
1356 TP_ACPI_HOTKEYSCAN_FNDELETE,
1357 TP_ACPI_HOTKEYSCAN_FNHOME,
1358 TP_ACPI_HOTKEYSCAN_FNEND,
1359 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1360 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1361 TP_ACPI_HOTKEYSCAN_FNSPACE,
1362 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1363 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1364 TP_ACPI_HOTKEYSCAN_MUTE,
1365 TP_ACPI_HOTKEYSCAN_THINKPAD,
1366 };
1367
1368 enum { /* Keys available through NVRAM polling */
1369 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1370 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1371 };
1372
1373 enum { /* Positions of some of the keys in hotkey masks */
1374 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1375 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1376 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1377 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1378 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1379 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1380 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1381 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1382 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1383 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1384 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1385 };
1386
1387 enum { /* NVRAM to ACPI HKEY group map */
1388 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1389 TP_ACPI_HKEY_ZOOM_MASK |
1390 TP_ACPI_HKEY_DISPSWTCH_MASK |
1391 TP_ACPI_HKEY_HIBERNATE_MASK,
1392 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1393 TP_ACPI_HKEY_BRGHTDWN_MASK,
1394 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1395 TP_ACPI_HKEY_VOLDWN_MASK |
1396 TP_ACPI_HKEY_MUTE_MASK,
1397 };
1398
1399 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1400 struct tp_nvram_state {
1401 u16 thinkpad_toggle:1;
1402 u16 zoom_toggle:1;
1403 u16 display_toggle:1;
1404 u16 thinklight_toggle:1;
1405 u16 hibernate_toggle:1;
1406 u16 displayexp_toggle:1;
1407 u16 display_state:1;
1408 u16 brightness_toggle:1;
1409 u16 volume_toggle:1;
1410 u16 mute:1;
1411
1412 u8 brightness_level;
1413 u8 volume_level;
1414 };
1415
1416 static struct task_struct *tpacpi_hotkey_task;
1417 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1418 static int hotkey_poll_freq = 10; /* Hz */
1419 static struct mutex hotkey_thread_mutex;
1420 static struct mutex hotkey_thread_data_mutex;
1421 static unsigned int hotkey_config_change;
1422
1423 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1424
1425 #define hotkey_source_mask 0U
1426
1427 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1428
1429 static struct mutex hotkey_mutex;
1430
1431 static enum { /* Reasons for waking up */
1432 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1433 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1434 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1435 } hotkey_wakeup_reason;
1436
1437 static int hotkey_autosleep_ack;
1438
1439 static u32 hotkey_orig_mask;
1440 static u32 hotkey_all_mask;
1441 static u32 hotkey_reserved_mask;
1442 static u32 hotkey_mask;
1443
1444 static unsigned int hotkey_report_mode;
1445
1446 static u16 *hotkey_keycode_map;
1447
1448 static struct attribute_set *hotkey_dev_attributes;
1449
1450 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1451 #define HOTKEY_CONFIG_CRITICAL_START \
1452 do { \
1453 mutex_lock(&hotkey_thread_data_mutex); \
1454 hotkey_config_change++; \
1455 } while (0);
1456 #define HOTKEY_CONFIG_CRITICAL_END \
1457 mutex_unlock(&hotkey_thread_data_mutex);
1458 #else
1459 #define HOTKEY_CONFIG_CRITICAL_START
1460 #define HOTKEY_CONFIG_CRITICAL_END
1461 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1462
1463 /* HKEY.MHKG() return bits */
1464 #define TP_HOTKEY_TABLET_MASK (1 << 3)
1465
1466 static int hotkey_get_wlsw(int *status)
1467 {
1468 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1469 if (dbg_wlswemul) {
1470 *status = !!tpacpi_wlsw_emulstate;
1471 return 0;
1472 }
1473 #endif
1474 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1475 return -EIO;
1476 return 0;
1477 }
1478
1479 static int hotkey_get_tablet_mode(int *status)
1480 {
1481 int s;
1482
1483 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
1484 return -EIO;
1485
1486 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
1487 return 0;
1488 }
1489
1490 /*
1491 * Call with hotkey_mutex held
1492 */
1493 static int hotkey_mask_get(void)
1494 {
1495 u32 m = 0;
1496
1497 if (tp_features.hotkey_mask) {
1498 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
1499 return -EIO;
1500 }
1501 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
1502
1503 return 0;
1504 }
1505
1506 /*
1507 * Call with hotkey_mutex held
1508 */
1509 static int hotkey_mask_set(u32 mask)
1510 {
1511 int i;
1512 int rc = 0;
1513
1514 if (tp_features.hotkey_mask) {
1515 if (!tp_warned.hotkey_mask_ff &&
1516 (mask == 0xffff || mask == 0xffffff ||
1517 mask == 0xffffffff)) {
1518 tp_warned.hotkey_mask_ff = 1;
1519 printk(TPACPI_NOTICE
1520 "setting the hotkey mask to 0x%08x is likely "
1521 "not the best way to go about it\n", mask);
1522 printk(TPACPI_NOTICE
1523 "please consider using the driver defaults, "
1524 "and refer to up-to-date thinkpad-acpi "
1525 "documentation\n");
1526 }
1527
1528 HOTKEY_CONFIG_CRITICAL_START
1529 for (i = 0; i < 32; i++) {
1530 u32 m = 1 << i;
1531 /* enable in firmware mask only keys not in NVRAM
1532 * mode, but enable the key in the cached hotkey_mask
1533 * regardless of mode, or the key will end up
1534 * disabled by hotkey_mask_get() */
1535 if (!acpi_evalf(hkey_handle,
1536 NULL, "MHKM", "vdd", i + 1,
1537 !!((mask & ~hotkey_source_mask) & m))) {
1538 rc = -EIO;
1539 break;
1540 } else {
1541 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1542 }
1543 }
1544 HOTKEY_CONFIG_CRITICAL_END
1545
1546 /* hotkey_mask_get must be called unconditionally below */
1547 if (!hotkey_mask_get() && !rc &&
1548 (hotkey_mask & ~hotkey_source_mask) !=
1549 (mask & ~hotkey_source_mask)) {
1550 printk(TPACPI_NOTICE
1551 "requested hot key mask 0x%08x, but "
1552 "firmware forced it to 0x%08x\n",
1553 mask, hotkey_mask);
1554 }
1555 } else {
1556 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1557 HOTKEY_CONFIG_CRITICAL_START
1558 hotkey_mask = mask & hotkey_source_mask;
1559 HOTKEY_CONFIG_CRITICAL_END
1560 hotkey_mask_get();
1561 if (hotkey_mask != mask) {
1562 printk(TPACPI_NOTICE
1563 "requested hot key mask 0x%08x, "
1564 "forced to 0x%08x (NVRAM poll mask is "
1565 "0x%08x): no firmware mask support\n",
1566 mask, hotkey_mask, hotkey_source_mask);
1567 }
1568 #else
1569 hotkey_mask_get();
1570 rc = -ENXIO;
1571 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1572 }
1573
1574 return rc;
1575 }
1576
1577 static int hotkey_status_get(int *status)
1578 {
1579 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1580 return -EIO;
1581
1582 return 0;
1583 }
1584
1585 static int hotkey_status_set(bool enable)
1586 {
1587 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0))
1588 return -EIO;
1589
1590 return 0;
1591 }
1592
1593 static void tpacpi_input_send_tabletsw(void)
1594 {
1595 int state;
1596
1597 if (tp_features.hotkey_tablet &&
1598 !hotkey_get_tablet_mode(&state)) {
1599 mutex_lock(&tpacpi_inputdev_send_mutex);
1600
1601 input_report_switch(tpacpi_inputdev,
1602 SW_TABLET_MODE, !!state);
1603 input_sync(tpacpi_inputdev);
1604
1605 mutex_unlock(&tpacpi_inputdev_send_mutex);
1606 }
1607 }
1608
1609 static void tpacpi_input_send_key(unsigned int scancode)
1610 {
1611 unsigned int keycode;
1612
1613 keycode = hotkey_keycode_map[scancode];
1614
1615 if (keycode != KEY_RESERVED) {
1616 mutex_lock(&tpacpi_inputdev_send_mutex);
1617
1618 input_report_key(tpacpi_inputdev, keycode, 1);
1619 if (keycode == KEY_UNKNOWN)
1620 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1621 scancode);
1622 input_sync(tpacpi_inputdev);
1623
1624 input_report_key(tpacpi_inputdev, keycode, 0);
1625 if (keycode == KEY_UNKNOWN)
1626 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1627 scancode);
1628 input_sync(tpacpi_inputdev);
1629
1630 mutex_unlock(&tpacpi_inputdev_send_mutex);
1631 }
1632 }
1633
1634 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1635 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1636
1637 static void tpacpi_hotkey_send_key(unsigned int scancode)
1638 {
1639 tpacpi_input_send_key(scancode);
1640 if (hotkey_report_mode < 2) {
1641 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1642 0x80, 0x1001 + scancode);
1643 }
1644 }
1645
1646 static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1647 {
1648 u8 d;
1649
1650 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1651 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1652 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1653 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1654 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1655 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1656 }
1657 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1658 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1659 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1660 }
1661 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1662 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1663 n->displayexp_toggle =
1664 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1665 }
1666 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1667 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1668 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1669 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1670 n->brightness_toggle =
1671 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1672 }
1673 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1674 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1675 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1676 >> TP_NVRAM_POS_LEVEL_VOLUME;
1677 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1678 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1679 }
1680 }
1681
1682 #define TPACPI_COMPARE_KEY(__scancode, __member) \
1683 do { \
1684 if ((mask & (1 << __scancode)) && \
1685 oldn->__member != newn->__member) \
1686 tpacpi_hotkey_send_key(__scancode); \
1687 } while (0)
1688
1689 #define TPACPI_MAY_SEND_KEY(__scancode) \
1690 do { if (mask & (1 << __scancode)) \
1691 tpacpi_hotkey_send_key(__scancode); } while (0)
1692
1693 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
1694 struct tp_nvram_state *newn,
1695 u32 mask)
1696 {
1697 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1698 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1699 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1700 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1701
1702 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1703
1704 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1705
1706 /* handle volume */
1707 if (oldn->volume_toggle != newn->volume_toggle) {
1708 if (oldn->mute != newn->mute) {
1709 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1710 }
1711 if (oldn->volume_level > newn->volume_level) {
1712 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1713 } else if (oldn->volume_level < newn->volume_level) {
1714 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1715 } else if (oldn->mute == newn->mute) {
1716 /* repeated key presses that didn't change state */
1717 if (newn->mute) {
1718 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1719 } else if (newn->volume_level != 0) {
1720 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1721 } else {
1722 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1723 }
1724 }
1725 }
1726
1727 /* handle brightness */
1728 if (oldn->brightness_toggle != newn->brightness_toggle) {
1729 if (oldn->brightness_level < newn->brightness_level) {
1730 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1731 } else if (oldn->brightness_level > newn->brightness_level) {
1732 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1733 } else {
1734 /* repeated key presses that didn't change state */
1735 if (newn->brightness_level != 0) {
1736 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1737 } else {
1738 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1739 }
1740 }
1741 }
1742 }
1743
1744 #undef TPACPI_COMPARE_KEY
1745 #undef TPACPI_MAY_SEND_KEY
1746
1747 static int hotkey_kthread(void *data)
1748 {
1749 struct tp_nvram_state s[2];
1750 u32 mask;
1751 unsigned int si, so;
1752 unsigned long t;
1753 unsigned int change_detector, must_reset;
1754
1755 mutex_lock(&hotkey_thread_mutex);
1756
1757 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1758 goto exit;
1759
1760 set_freezable();
1761
1762 so = 0;
1763 si = 1;
1764 t = 0;
1765
1766 /* Initial state for compares */
1767 mutex_lock(&hotkey_thread_data_mutex);
1768 change_detector = hotkey_config_change;
1769 mask = hotkey_source_mask & hotkey_mask;
1770 mutex_unlock(&hotkey_thread_data_mutex);
1771 hotkey_read_nvram(&s[so], mask);
1772
1773 while (!kthread_should_stop() && hotkey_poll_freq) {
1774 if (t == 0)
1775 t = 1000/hotkey_poll_freq;
1776 t = msleep_interruptible(t);
1777 if (unlikely(kthread_should_stop()))
1778 break;
1779 must_reset = try_to_freeze();
1780 if (t > 0 && !must_reset)
1781 continue;
1782
1783 mutex_lock(&hotkey_thread_data_mutex);
1784 if (must_reset || hotkey_config_change != change_detector) {
1785 /* forget old state on thaw or config change */
1786 si = so;
1787 t = 0;
1788 change_detector = hotkey_config_change;
1789 }
1790 mask = hotkey_source_mask & hotkey_mask;
1791 mutex_unlock(&hotkey_thread_data_mutex);
1792
1793 if (likely(mask)) {
1794 hotkey_read_nvram(&s[si], mask);
1795 if (likely(si != so)) {
1796 hotkey_compare_and_issue_event(&s[so], &s[si],
1797 mask);
1798 }
1799 }
1800
1801 so = si;
1802 si ^= 1;
1803 }
1804
1805 exit:
1806 mutex_unlock(&hotkey_thread_mutex);
1807 return 0;
1808 }
1809
1810 static void hotkey_poll_stop_sync(void)
1811 {
1812 if (tpacpi_hotkey_task) {
1813 if (frozen(tpacpi_hotkey_task) ||
1814 freezing(tpacpi_hotkey_task))
1815 thaw_process(tpacpi_hotkey_task);
1816
1817 kthread_stop(tpacpi_hotkey_task);
1818 tpacpi_hotkey_task = NULL;
1819 mutex_lock(&hotkey_thread_mutex);
1820 /* at this point, the thread did exit */
1821 mutex_unlock(&hotkey_thread_mutex);
1822 }
1823 }
1824
1825 /* call with hotkey_mutex held */
1826 static void hotkey_poll_setup(int may_warn)
1827 {
1828 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1829 hotkey_poll_freq > 0 &&
1830 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1831 if (!tpacpi_hotkey_task) {
1832 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
1833 NULL, TPACPI_NVRAM_KTHREAD_NAME);
1834 if (IS_ERR(tpacpi_hotkey_task)) {
1835 tpacpi_hotkey_task = NULL;
1836 printk(TPACPI_ERR
1837 "could not create kernel thread "
1838 "for hotkey polling\n");
1839 }
1840 }
1841 } else {
1842 hotkey_poll_stop_sync();
1843 if (may_warn &&
1844 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
1845 printk(TPACPI_NOTICE
1846 "hot keys 0x%08x require polling, "
1847 "which is currently disabled\n",
1848 hotkey_source_mask);
1849 }
1850 }
1851 }
1852
1853 static void hotkey_poll_setup_safe(int may_warn)
1854 {
1855 mutex_lock(&hotkey_mutex);
1856 hotkey_poll_setup(may_warn);
1857 mutex_unlock(&hotkey_mutex);
1858 }
1859
1860 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1861
1862 static void hotkey_poll_setup_safe(int __unused)
1863 {
1864 }
1865
1866 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1867
1868 static int hotkey_inputdev_open(struct input_dev *dev)
1869 {
1870 switch (tpacpi_lifecycle) {
1871 case TPACPI_LIFE_INIT:
1872 /*
1873 * hotkey_init will call hotkey_poll_setup_safe
1874 * at the appropriate moment
1875 */
1876 return 0;
1877 case TPACPI_LIFE_EXITING:
1878 return -EBUSY;
1879 case TPACPI_LIFE_RUNNING:
1880 hotkey_poll_setup_safe(0);
1881 return 0;
1882 }
1883
1884 /* Should only happen if tpacpi_lifecycle is corrupt */
1885 BUG();
1886 return -EBUSY;
1887 }
1888
1889 static void hotkey_inputdev_close(struct input_dev *dev)
1890 {
1891 /* disable hotkey polling when possible */
1892 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1893 hotkey_poll_setup_safe(0);
1894 }
1895
1896 /* sysfs hotkey enable ------------------------------------------------- */
1897 static ssize_t hotkey_enable_show(struct device *dev,
1898 struct device_attribute *attr,
1899 char *buf)
1900 {
1901 int res, status;
1902
1903 printk_deprecated_attribute("hotkey_enable",
1904 "Hotkey reporting is always enabled");
1905
1906 res = hotkey_status_get(&status);
1907 if (res)
1908 return res;
1909
1910 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1911 }
1912
1913 static ssize_t hotkey_enable_store(struct device *dev,
1914 struct device_attribute *attr,
1915 const char *buf, size_t count)
1916 {
1917 unsigned long t;
1918
1919 printk_deprecated_attribute("hotkey_enable",
1920 "Hotkeys can be disabled through hotkey_mask");
1921
1922 if (parse_strtoul(buf, 1, &t))
1923 return -EINVAL;
1924
1925 if (t == 0)
1926 return -EPERM;
1927
1928 return count;
1929 }
1930
1931 static struct device_attribute dev_attr_hotkey_enable =
1932 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
1933 hotkey_enable_show, hotkey_enable_store);
1934
1935 /* sysfs hotkey mask --------------------------------------------------- */
1936 static ssize_t hotkey_mask_show(struct device *dev,
1937 struct device_attribute *attr,
1938 char *buf)
1939 {
1940 int res;
1941
1942 if (mutex_lock_killable(&hotkey_mutex))
1943 return -ERESTARTSYS;
1944 res = hotkey_mask_get();
1945 mutex_unlock(&hotkey_mutex);
1946
1947 return (res)?
1948 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
1949 }
1950
1951 static ssize_t hotkey_mask_store(struct device *dev,
1952 struct device_attribute *attr,
1953 const char *buf, size_t count)
1954 {
1955 unsigned long t;
1956 int res;
1957
1958 if (parse_strtoul(buf, 0xffffffffUL, &t))
1959 return -EINVAL;
1960
1961 if (mutex_lock_killable(&hotkey_mutex))
1962 return -ERESTARTSYS;
1963
1964 res = hotkey_mask_set(t);
1965
1966 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1967 hotkey_poll_setup(1);
1968 #endif
1969
1970 mutex_unlock(&hotkey_mutex);
1971
1972 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t);
1973
1974 return (res) ? res : count;
1975 }
1976
1977 static struct device_attribute dev_attr_hotkey_mask =
1978 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
1979 hotkey_mask_show, hotkey_mask_store);
1980
1981 /* sysfs hotkey bios_enabled ------------------------------------------- */
1982 static ssize_t hotkey_bios_enabled_show(struct device *dev,
1983 struct device_attribute *attr,
1984 char *buf)
1985 {
1986 return sprintf(buf, "0\n");
1987 }
1988
1989 static struct device_attribute dev_attr_hotkey_bios_enabled =
1990 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
1991
1992 /* sysfs hotkey bios_mask ---------------------------------------------- */
1993 static ssize_t hotkey_bios_mask_show(struct device *dev,
1994 struct device_attribute *attr,
1995 char *buf)
1996 {
1997 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
1998 }
1999
2000 static struct device_attribute dev_attr_hotkey_bios_mask =
2001 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
2002
2003 /* sysfs hotkey all_mask ----------------------------------------------- */
2004 static ssize_t hotkey_all_mask_show(struct device *dev,
2005 struct device_attribute *attr,
2006 char *buf)
2007 {
2008 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2009 hotkey_all_mask | hotkey_source_mask);
2010 }
2011
2012 static struct device_attribute dev_attr_hotkey_all_mask =
2013 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
2014
2015 /* sysfs hotkey recommended_mask --------------------------------------- */
2016 static ssize_t hotkey_recommended_mask_show(struct device *dev,
2017 struct device_attribute *attr,
2018 char *buf)
2019 {
2020 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2021 (hotkey_all_mask | hotkey_source_mask)
2022 & ~hotkey_reserved_mask);
2023 }
2024
2025 static struct device_attribute dev_attr_hotkey_recommended_mask =
2026 __ATTR(hotkey_recommended_mask, S_IRUGO,
2027 hotkey_recommended_mask_show, NULL);
2028
2029 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2030
2031 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
2032 static ssize_t hotkey_source_mask_show(struct device *dev,
2033 struct device_attribute *attr,
2034 char *buf)
2035 {
2036 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2037 }
2038
2039 static ssize_t hotkey_source_mask_store(struct device *dev,
2040 struct device_attribute *attr,
2041 const char *buf, size_t count)
2042 {
2043 unsigned long t;
2044
2045 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2046 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2047 return -EINVAL;
2048
2049 if (mutex_lock_killable(&hotkey_mutex))
2050 return -ERESTARTSYS;
2051
2052 HOTKEY_CONFIG_CRITICAL_START
2053 hotkey_source_mask = t;
2054 HOTKEY_CONFIG_CRITICAL_END
2055
2056 hotkey_poll_setup(1);
2057
2058 mutex_unlock(&hotkey_mutex);
2059
2060 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t);
2061
2062 return count;
2063 }
2064
2065 static struct device_attribute dev_attr_hotkey_source_mask =
2066 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2067 hotkey_source_mask_show, hotkey_source_mask_store);
2068
2069 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2070 static ssize_t hotkey_poll_freq_show(struct device *dev,
2071 struct device_attribute *attr,
2072 char *buf)
2073 {
2074 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2075 }
2076
2077 static ssize_t hotkey_poll_freq_store(struct device *dev,
2078 struct device_attribute *attr,
2079 const char *buf, size_t count)
2080 {
2081 unsigned long t;
2082
2083 if (parse_strtoul(buf, 25, &t))
2084 return -EINVAL;
2085
2086 if (mutex_lock_killable(&hotkey_mutex))
2087 return -ERESTARTSYS;
2088
2089 hotkey_poll_freq = t;
2090
2091 hotkey_poll_setup(1);
2092 mutex_unlock(&hotkey_mutex);
2093
2094 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t);
2095
2096 return count;
2097 }
2098
2099 static struct device_attribute dev_attr_hotkey_poll_freq =
2100 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2101 hotkey_poll_freq_show, hotkey_poll_freq_store);
2102
2103 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2104
2105 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2106 static ssize_t hotkey_radio_sw_show(struct device *dev,
2107 struct device_attribute *attr,
2108 char *buf)
2109 {
2110 int res, s;
2111 res = hotkey_get_wlsw(&s);
2112 if (res < 0)
2113 return res;
2114
2115 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2116 }
2117
2118 static struct device_attribute dev_attr_hotkey_radio_sw =
2119 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2120
2121 static void hotkey_radio_sw_notify_change(void)
2122 {
2123 if (tp_features.hotkey_wlsw)
2124 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2125 "hotkey_radio_sw");
2126 }
2127
2128 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2129 static ssize_t hotkey_tablet_mode_show(struct device *dev,
2130 struct device_attribute *attr,
2131 char *buf)
2132 {
2133 int res, s;
2134 res = hotkey_get_tablet_mode(&s);
2135 if (res < 0)
2136 return res;
2137
2138 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2139 }
2140
2141 static struct device_attribute dev_attr_hotkey_tablet_mode =
2142 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2143
2144 static void hotkey_tablet_mode_notify_change(void)
2145 {
2146 if (tp_features.hotkey_tablet)
2147 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2148 "hotkey_tablet_mode");
2149 }
2150
2151 /* sysfs hotkey report_mode -------------------------------------------- */
2152 static ssize_t hotkey_report_mode_show(struct device *dev,
2153 struct device_attribute *attr,
2154 char *buf)
2155 {
2156 return snprintf(buf, PAGE_SIZE, "%d\n",
2157 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2158 }
2159
2160 static struct device_attribute dev_attr_hotkey_report_mode =
2161 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2162
2163 /* sysfs wakeup reason (pollable) -------------------------------------- */
2164 static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2165 struct device_attribute *attr,
2166 char *buf)
2167 {
2168 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2169 }
2170
2171 static struct device_attribute dev_attr_hotkey_wakeup_reason =
2172 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2173
2174 static void hotkey_wakeup_reason_notify_change(void)
2175 {
2176 if (tp_features.hotkey_mask)
2177 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2178 "wakeup_reason");
2179 }
2180
2181 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2182 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2183 struct device_attribute *attr,
2184 char *buf)
2185 {
2186 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2187 }
2188
2189 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2190 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2191 hotkey_wakeup_hotunplug_complete_show, NULL);
2192
2193 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2194 {
2195 if (tp_features.hotkey_mask)
2196 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2197 "wakeup_hotunplug_complete");
2198 }
2199
2200 /* --------------------------------------------------------------------- */
2201
2202 static struct attribute *hotkey_attributes[] __initdata = {
2203 &dev_attr_hotkey_enable.attr,
2204 &dev_attr_hotkey_bios_enabled.attr,
2205 &dev_attr_hotkey_report_mode.attr,
2206 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2207 &dev_attr_hotkey_mask.attr,
2208 &dev_attr_hotkey_all_mask.attr,
2209 &dev_attr_hotkey_recommended_mask.attr,
2210 &dev_attr_hotkey_source_mask.attr,
2211 &dev_attr_hotkey_poll_freq.attr,
2212 #endif
2213 };
2214
2215 static struct attribute *hotkey_mask_attributes[] __initdata = {
2216 &dev_attr_hotkey_bios_mask.attr,
2217 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2218 &dev_attr_hotkey_mask.attr,
2219 &dev_attr_hotkey_all_mask.attr,
2220 &dev_attr_hotkey_recommended_mask.attr,
2221 #endif
2222 &dev_attr_hotkey_wakeup_reason.attr,
2223 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
2224 };
2225
2226 static void bluetooth_update_rfk(void);
2227 static void wan_update_rfk(void);
2228 static void uwb_update_rfk(void);
2229 static void tpacpi_send_radiosw_update(void)
2230 {
2231 int wlsw;
2232
2233 /* Sync these BEFORE sending any rfkill events */
2234 if (tp_features.bluetooth)
2235 bluetooth_update_rfk();
2236 if (tp_features.wan)
2237 wan_update_rfk();
2238 if (tp_features.uwb)
2239 uwb_update_rfk();
2240
2241 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
2242 mutex_lock(&tpacpi_inputdev_send_mutex);
2243
2244 input_report_switch(tpacpi_inputdev,
2245 SW_RFKILL_ALL, !!wlsw);
2246 input_sync(tpacpi_inputdev);
2247
2248 mutex_unlock(&tpacpi_inputdev_send_mutex);
2249 }
2250 hotkey_radio_sw_notify_change();
2251 }
2252
2253 static void hotkey_exit(void)
2254 {
2255 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2256 hotkey_poll_stop_sync();
2257 #endif
2258
2259 if (hotkey_dev_attributes)
2260 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2261
2262 kfree(hotkey_keycode_map);
2263
2264 if (tp_features.hotkey) {
2265 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY,
2266 "restoring original hot key mask\n");
2267 /* no short-circuit boolean operator below! */
2268 if ((hotkey_mask_set(hotkey_orig_mask) |
2269 hotkey_status_set(false)) != 0)
2270 printk(TPACPI_ERR
2271 "failed to restore hot key mask "
2272 "to BIOS defaults\n");
2273 }
2274 }
2275
2276 static int __init hotkey_init(struct ibm_init_struct *iibm)
2277 {
2278 /* Requirements for changing the default keymaps:
2279 *
2280 * 1. Many of the keys are mapped to KEY_RESERVED for very
2281 * good reasons. Do not change them unless you have deep
2282 * knowledge on the IBM and Lenovo ThinkPad firmware for
2283 * the various ThinkPad models. The driver behaves
2284 * differently for KEY_RESERVED: such keys have their
2285 * hot key mask *unset* in mask_recommended, and also
2286 * in the initial hot key mask programmed into the
2287 * firmware at driver load time, which means the firm-
2288 * ware may react very differently if you change them to
2289 * something else;
2290 *
2291 * 2. You must be subscribed to the linux-thinkpad and
2292 * ibm-acpi-devel mailing lists, and you should read the
2293 * list archives since 2007 if you want to change the
2294 * keymaps. This requirement exists so that you will
2295 * know the past history of problems with the thinkpad-
2296 * acpi driver keymaps, and also that you will be
2297 * listening to any bug reports;
2298 *
2299 * 3. Do not send thinkpad-acpi specific patches directly to
2300 * for merging, *ever*. Send them to the linux-acpi
2301 * mailinglist for comments. Merging is to be done only
2302 * through acpi-test and the ACPI maintainer.
2303 *
2304 * If the above is too much to ask, don't change the keymap.
2305 * Ask the thinkpad-acpi maintainer to do it, instead.
2306 */
2307 static u16 ibm_keycode_map[] __initdata = {
2308 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2309 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
2310 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2311 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
2312
2313 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2314 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2315 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2316 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
2317
2318 /* brightness: firmware always reacts to them, unless
2319 * X.org did some tricks in the radeon BIOS scratch
2320 * registers of *some* models */
2321 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
2322 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
2323
2324 /* Thinklight: firmware always react to it */
2325 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
2326
2327 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2328 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
2329
2330 /* Volume: firmware always react to it and reprograms
2331 * the built-in *extra* mixer. Never map it to control
2332 * another mixer by default. */
2333 KEY_RESERVED, /* 0x14: VOLUME UP */
2334 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2335 KEY_RESERVED, /* 0x16: MUTE */
2336
2337 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2338
2339 /* (assignments unknown, please report if found) */
2340 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2341 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2342 };
2343 static u16 lenovo_keycode_map[] __initdata = {
2344 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2345 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2346 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2347 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
2348
2349 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2350 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2351 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2352 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
2353
2354 /* These either have to go through ACPI video, or
2355 * act like in the IBM ThinkPads, so don't ever
2356 * enable them by default */
2357 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
2358 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
2359
2360 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
2361
2362 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2363 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
2364
2365 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2366 * react to it and reprograms the built-in *extra* mixer.
2367 * Never map it to control another mixer by default.
2368 *
2369 * T60?, T61, R60?, R61: firmware and EC tries to send
2370 * these over the regular keyboard, so these are no-ops,
2371 * but there are still weird bugs re. MUTE, so do not
2372 * change unless you get test reports from all Lenovo
2373 * models. May cause the BIOS to interfere with the
2374 * HDA mixer.
2375 */
2376 KEY_RESERVED, /* 0x14: VOLUME UP */
2377 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2378 KEY_RESERVED, /* 0x16: MUTE */
2379
2380 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2381
2382 /* (assignments unknown, please report if found) */
2383 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2384 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2385 };
2386
2387 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2388 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2389 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2390
2391 int res, i;
2392 int status;
2393 int hkeyv;
2394
2395 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2396 "initializing hotkey subdriver\n");
2397
2398 BUG_ON(!tpacpi_inputdev);
2399 BUG_ON(tpacpi_inputdev->open != NULL ||
2400 tpacpi_inputdev->close != NULL);
2401
2402 TPACPI_ACPIHANDLE_INIT(hkey);
2403 mutex_init(&hotkey_mutex);
2404
2405 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2406 mutex_init(&hotkey_thread_mutex);
2407 mutex_init(&hotkey_thread_data_mutex);
2408 #endif
2409
2410 /* hotkey not supported on 570 */
2411 tp_features.hotkey = hkey_handle != NULL;
2412
2413 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2414 "hotkeys are %s\n",
2415 str_supported(tp_features.hotkey));
2416
2417 if (!tp_features.hotkey)
2418 return 1;
2419
2420 tpacpi_disable_brightness_delay();
2421
2422 hotkey_dev_attributes = create_attr_set(13, NULL);
2423 if (!hotkey_dev_attributes)
2424 return -ENOMEM;
2425 res = add_many_to_attr_set(hotkey_dev_attributes,
2426 hotkey_attributes,
2427 ARRAY_SIZE(hotkey_attributes));
2428 if (res)
2429 goto err_exit;
2430
2431 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2432 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2433 for HKEY interface version 0x100 */
2434 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
2435 if ((hkeyv >> 8) != 1) {
2436 printk(TPACPI_ERR "unknown version of the "
2437 "HKEY interface: 0x%x\n", hkeyv);
2438 printk(TPACPI_ERR "please report this to %s\n",
2439 TPACPI_MAIL);
2440 } else {
2441 /*
2442 * MHKV 0x100 in A31, R40, R40e,
2443 * T4x, X31, and later
2444 */
2445 tp_features.hotkey_mask = 1;
2446 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2447 "firmware HKEY interface version: 0x%x\n",
2448 hkeyv);
2449 }
2450 }
2451
2452 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2453 "hotkey masks are %s\n",
2454 str_supported(tp_features.hotkey_mask));
2455
2456 if (tp_features.hotkey_mask) {
2457 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
2458 "MHKA", "qd")) {
2459 printk(TPACPI_ERR
2460 "missing MHKA handler, "
2461 "please report this to %s\n",
2462 TPACPI_MAIL);
2463 /* FN+F12, FN+F4, FN+F3 */
2464 hotkey_all_mask = 0x080cU;
2465 }
2466 }
2467
2468 /* hotkey_source_mask *must* be zero for
2469 * the first hotkey_mask_get */
2470 if (tp_features.hotkey_mask) {
2471 res = hotkey_mask_get();
2472 if (res)
2473 goto err_exit;
2474
2475 hotkey_orig_mask = hotkey_mask;
2476 res = add_many_to_attr_set(
2477 hotkey_dev_attributes,
2478 hotkey_mask_attributes,
2479 ARRAY_SIZE(hotkey_mask_attributes));
2480 if (res)
2481 goto err_exit;
2482 }
2483
2484 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2485 if (tp_features.hotkey_mask) {
2486 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
2487 & ~hotkey_all_mask;
2488 } else {
2489 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
2490 }
2491
2492 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2493 "hotkey source mask 0x%08x, polling freq %d\n",
2494 hotkey_source_mask, hotkey_poll_freq);
2495 #endif
2496
2497 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2498 if (dbg_wlswemul) {
2499 tp_features.hotkey_wlsw = 1;
2500 printk(TPACPI_INFO
2501 "radio switch emulation enabled\n");
2502 } else
2503 #endif
2504 /* Not all thinkpads have a hardware radio switch */
2505 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
2506 tp_features.hotkey_wlsw = 1;
2507 printk(TPACPI_INFO
2508 "radio switch found; radios are %s\n",
2509 enabled(status, 0));
2510 }
2511 if (tp_features.hotkey_wlsw)
2512 res = add_to_attr_set(hotkey_dev_attributes,
2513 &dev_attr_hotkey_radio_sw.attr);
2514
2515 /* For X41t, X60t, X61t Tablets... */
2516 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
2517 tp_features.hotkey_tablet = 1;
2518 printk(TPACPI_INFO
2519 "possible tablet mode switch found; "
2520 "ThinkPad in %s mode\n",
2521 (status & TP_HOTKEY_TABLET_MASK)?
2522 "tablet" : "laptop");
2523 res = add_to_attr_set(hotkey_dev_attributes,
2524 &dev_attr_hotkey_tablet_mode.attr);
2525 }
2526
2527 if (!res)
2528 res = register_attr_set_with_sysfs(
2529 hotkey_dev_attributes,
2530 &tpacpi_pdev->dev.kobj);
2531 if (res)
2532 goto err_exit;
2533
2534 /* Set up key map */
2535
2536 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
2537 GFP_KERNEL);
2538 if (!hotkey_keycode_map) {
2539 printk(TPACPI_ERR
2540 "failed to allocate memory for key map\n");
2541 res = -ENOMEM;
2542 goto err_exit;
2543 }
2544
2545 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
2546 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2547 "using Lenovo default hot key map\n");
2548 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
2549 TPACPI_HOTKEY_MAP_SIZE);
2550 } else {
2551 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2552 "using IBM default hot key map\n");
2553 memcpy(hotkey_keycode_map, &ibm_keycode_map,
2554 TPACPI_HOTKEY_MAP_SIZE);
2555 }
2556
2557 set_bit(EV_KEY, tpacpi_inputdev->evbit);
2558 set_bit(EV_MSC, tpacpi_inputdev->evbit);
2559 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
2560 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
2561 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
2562 tpacpi_inputdev->keycode = hotkey_keycode_map;
2563 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
2564 if (hotkey_keycode_map[i] != KEY_RESERVED) {
2565 set_bit(hotkey_keycode_map[i],
2566 tpacpi_inputdev->keybit);
2567 } else {
2568 if (i < sizeof(hotkey_reserved_mask)*8)
2569 hotkey_reserved_mask |= 1 << i;
2570 }
2571 }
2572
2573 if (tp_features.hotkey_wlsw) {
2574 set_bit(EV_SW, tpacpi_inputdev->evbit);
2575 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit);
2576 }
2577 if (tp_features.hotkey_tablet) {
2578 set_bit(EV_SW, tpacpi_inputdev->evbit);
2579 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
2580 }
2581
2582 /* Do not issue duplicate brightness change events to
2583 * userspace */
2584 if (!tp_features.bright_acpimode)
2585 /* update bright_acpimode... */
2586 tpacpi_check_std_acpi_brightness_support();
2587
2588 if (tp_features.bright_acpimode) {
2589 printk(TPACPI_INFO
2590 "This ThinkPad has standard ACPI backlight "
2591 "brightness control, supported by the ACPI "
2592 "video driver\n");
2593 printk(TPACPI_NOTICE
2594 "Disabling thinkpad-acpi brightness events "
2595 "by default...\n");
2596
2597 /* The hotkey_reserved_mask change below is not
2598 * necessary while the keys are at KEY_RESERVED in the
2599 * default map, but better safe than sorry, leave it
2600 * here as a marker of what we have to do, especially
2601 * when we finally become able to set this at runtime
2602 * on response to X.org requests */
2603 hotkey_reserved_mask |=
2604 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
2605 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
2606 }
2607
2608 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2609 "enabling firmware HKEY event interface...\n");
2610 res = hotkey_status_set(true);
2611 if (res) {
2612 hotkey_exit();
2613 return res;
2614 }
2615 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
2616 & ~hotkey_reserved_mask)
2617 | hotkey_orig_mask);
2618 if (res < 0 && res != -ENXIO) {
2619 hotkey_exit();
2620 return res;
2621 }
2622
2623 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
2624 "legacy ibm/hotkey event reporting over procfs %s\n",
2625 (hotkey_report_mode < 2) ?
2626 "enabled" : "disabled");
2627
2628 tpacpi_inputdev->open = &hotkey_inputdev_open;
2629 tpacpi_inputdev->close = &hotkey_inputdev_close;
2630
2631 hotkey_poll_setup_safe(1);
2632 tpacpi_send_radiosw_update();
2633 tpacpi_input_send_tabletsw();
2634
2635 return 0;
2636
2637 err_exit:
2638 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2639 hotkey_dev_attributes = NULL;
2640
2641 return (res < 0)? res : 1;
2642 }
2643
2644 static bool hotkey_notify_hotkey(const u32 hkey,
2645 bool *send_acpi_ev,
2646 bool *ignore_acpi_ev)
2647 {
2648 /* 0x1000-0x1FFF: key presses */
2649 unsigned int scancode = hkey & 0xfff;
2650 *send_acpi_ev = true;
2651 *ignore_acpi_ev = false;
2652
2653 if (scancode > 0 && scancode < 0x21) {
2654 scancode--;
2655 if (!(hotkey_source_mask & (1 << scancode))) {
2656 tpacpi_input_send_key(scancode);
2657 *send_acpi_ev = false;
2658 } else {
2659 *ignore_acpi_ev = true;
2660 }
2661 return true;
2662 }
2663 return false;
2664 }
2665
2666 static bool hotkey_notify_wakeup(const u32 hkey,
2667 bool *send_acpi_ev,
2668 bool *ignore_acpi_ev)
2669 {
2670 /* 0x2000-0x2FFF: Wakeup reason */
2671 *send_acpi_ev = true;
2672 *ignore_acpi_ev = false;
2673
2674 switch (hkey) {
2675 case 0x2304: /* suspend, undock */
2676 case 0x2404: /* hibernation, undock */
2677 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
2678 *ignore_acpi_ev = true;
2679 break;
2680
2681 case 0x2305: /* suspend, bay eject */
2682 case 0x2405: /* hibernation, bay eject */
2683 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
2684 *ignore_acpi_ev = true;
2685 break;
2686
2687 case 0x2313: /* Battery on critical low level (S3) */
2688 case 0x2413: /* Battery on critical low level (S4) */
2689 printk(TPACPI_ALERT
2690 "EMERGENCY WAKEUP: battery almost empty\n");
2691 /* how to auto-heal: */
2692 /* 2313: woke up from S3, go to S4/S5 */
2693 /* 2413: woke up from S4, go to S5 */
2694 break;
2695
2696 default:
2697 return false;
2698 }
2699
2700 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
2701 printk(TPACPI_INFO
2702 "woke up due to a hot-unplug "
2703 "request...\n");
2704 hotkey_wakeup_reason_notify_change();
2705 }
2706 return true;
2707 }
2708
2709 static bool hotkey_notify_usrevent(const u32 hkey,
2710 bool *send_acpi_ev,
2711 bool *ignore_acpi_ev)
2712 {
2713 /* 0x5000-0x5FFF: human interface helpers */
2714 *send_acpi_ev = true;
2715 *ignore_acpi_ev = false;
2716
2717 switch (hkey) {
2718 case 0x5010: /* Lenovo new BIOS: brightness changed */
2719 case 0x500b: /* X61t: tablet pen inserted into bay */
2720 case 0x500c: /* X61t: tablet pen removed from bay */
2721 return true;
2722
2723 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2724 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2725 tpacpi_input_send_tabletsw();
2726 hotkey_tablet_mode_notify_change();
2727 *send_acpi_ev = false;
2728 return true;
2729
2730 case 0x5001:
2731 case 0x5002:
2732 /* LID switch events. Do not propagate */
2733 *ignore_acpi_ev = true;
2734 return true;
2735
2736 default:
2737 return false;
2738 }
2739 }
2740
2741 static bool hotkey_notify_thermal(const u32 hkey,
2742 bool *send_acpi_ev,
2743 bool *ignore_acpi_ev)
2744 {
2745 /* 0x6000-0x6FFF: thermal alarms */
2746 *send_acpi_ev = true;
2747 *ignore_acpi_ev = false;
2748
2749 switch (hkey) {
2750 case 0x6011:
2751 printk(TPACPI_CRIT
2752 "THERMAL ALARM: battery is too hot!\n");
2753 /* recommended action: warn user through gui */
2754 return true;
2755 case 0x6012:
2756 printk(TPACPI_ALERT
2757 "THERMAL EMERGENCY: battery is extremely hot!\n");
2758 /* recommended action: immediate sleep/hibernate */
2759 return true;
2760 case 0x6021:
2761 printk(TPACPI_CRIT
2762 "THERMAL ALARM: "
2763 "a sensor reports something is too hot!\n");
2764 /* recommended action: warn user through gui, that */
2765 /* some internal component is too hot */
2766 return true;
2767 case 0x6022:
2768 printk(TPACPI_ALERT
2769 "THERMAL EMERGENCY: "
2770 "a sensor reports something is extremely hot!\n");
2771 /* recommended action: immediate sleep/hibernate */
2772 return true;
2773 case 0x6030:
2774 printk(TPACPI_INFO
2775 "EC reports that Thermal Table has changed\n");
2776 /* recommended action: do nothing, we don't have
2777 * Lenovo ATM information */
2778 return true;
2779 default:
2780 printk(TPACPI_ALERT
2781 "THERMAL ALERT: unknown thermal alarm received\n");
2782 return false;
2783 }
2784 }
2785
2786 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2787 {
2788 u32 hkey;
2789 bool send_acpi_ev;
2790 bool ignore_acpi_ev;
2791 bool known_ev;
2792
2793 if (event != 0x80) {
2794 printk(TPACPI_ERR
2795 "unknown HKEY notification event %d\n", event);
2796 /* forward it to userspace, maybe it knows how to handle it */
2797 acpi_bus_generate_netlink_event(
2798 ibm->acpi->device->pnp.device_class,
2799 dev_name(&ibm->acpi->device->dev),
2800 event, 0);
2801 return;
2802 }
2803
2804 while (1) {
2805 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
2806 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
2807 return;
2808 }
2809
2810 if (hkey == 0) {
2811 /* queue empty */
2812 return;
2813 }
2814
2815 send_acpi_ev = true;
2816 ignore_acpi_ev = false;
2817
2818 switch (hkey >> 12) {
2819 case 1:
2820 /* 0x1000-0x1FFF: key presses */
2821 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
2822 &ignore_acpi_ev);
2823 break;
2824 case 2:
2825 /* 0x2000-0x2FFF: Wakeup reason */
2826 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
2827 &ignore_acpi_ev);
2828 break;
2829 case 3:
2830 /* 0x3000-0x3FFF: bay-related wakeups */
2831 if (hkey == 0x3003) {
2832 hotkey_autosleep_ack = 1;
2833 printk(TPACPI_INFO
2834 "bay ejected\n");
2835 hotkey_wakeup_hotunplug_complete_notify_change();
2836 known_ev = true;
2837 } else {
2838 known_ev = false;
2839 }
2840 break;
2841 case 4:
2842 /* 0x4000-0x4FFF: dock-related wakeups */
2843 if (hkey == 0x4003) {
2844 hotkey_autosleep_ack = 1;
2845 printk(TPACPI_INFO
2846 "undocked\n");
2847 hotkey_wakeup_hotunplug_complete_notify_change();
2848 known_ev = true;
2849 } else {
2850 known_ev = false;
2851 }
2852 break;
2853 case 5:
2854 /* 0x5000-0x5FFF: human interface helpers */
2855 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
2856 &ignore_acpi_ev);
2857 break;
2858 case 6:
2859 /* 0x6000-0x6FFF: thermal alarms */
2860 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
2861 &ignore_acpi_ev);
2862 break;
2863 case 7:
2864 /* 0x7000-0x7FFF: misc */
2865 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
2866 tpacpi_send_radiosw_update();
2867 send_acpi_ev = 0;
2868 known_ev = true;
2869 break;
2870 }
2871 /* fallthrough to default */
2872 default:
2873 known_ev = false;
2874 }
2875 if (!known_ev) {
2876 printk(TPACPI_NOTICE
2877 "unhandled HKEY event 0x%04x\n", hkey);
2878 printk(TPACPI_NOTICE
2879 "please report the conditions when this "
2880 "event happened to %s\n", TPACPI_MAIL);
2881 }
2882
2883 /* Legacy events */
2884 if (!ignore_acpi_ev &&
2885 (send_acpi_ev || hotkey_report_mode < 2)) {
2886 acpi_bus_generate_proc_event(ibm->acpi->device,
2887 event, hkey);
2888 }
2889
2890 /* netlink events */
2891 if (!ignore_acpi_ev && send_acpi_ev) {
2892 acpi_bus_generate_netlink_event(
2893 ibm->acpi->device->pnp.device_class,
2894 dev_name(&ibm->acpi->device->dev),
2895 event, hkey);
2896 }
2897 }
2898 }
2899
2900 static void hotkey_suspend(pm_message_t state)
2901 {
2902 /* Do these on suspend, we get the events on early resume! */
2903 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
2904 hotkey_autosleep_ack = 0;
2905 }
2906
2907 static void hotkey_resume(void)
2908 {
2909 tpacpi_disable_brightness_delay();
2910
2911 if (hotkey_mask_get())
2912 printk(TPACPI_ERR
2913 "error while trying to read hot key mask "
2914 "from firmware\n");
2915 tpacpi_send_radiosw_update();
2916 hotkey_tablet_mode_notify_change();
2917 hotkey_wakeup_reason_notify_change();
2918 hotkey_wakeup_hotunplug_complete_notify_change();
2919 hotkey_poll_setup_safe(0);
2920 }
2921
2922 /* procfs -------------------------------------------------------------- */
2923 static int hotkey_read(char *p)
2924 {
2925 int res, status;
2926 int len = 0;
2927
2928 if (!tp_features.hotkey) {
2929 len += sprintf(p + len, "status:\t\tnot supported\n");
2930 return len;
2931 }
2932
2933 if (mutex_lock_killable(&hotkey_mutex))
2934 return -ERESTARTSYS;
2935 res = hotkey_status_get(&status);
2936 if (!res)
2937 res = hotkey_mask_get();
2938 mutex_unlock(&hotkey_mutex);
2939 if (res)
2940 return res;
2941
2942 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
2943 if (tp_features.hotkey_mask) {
2944 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
2945 len += sprintf(p + len,
2946 "commands:\tenable, disable, reset, <mask>\n");
2947 } else {
2948 len += sprintf(p + len, "mask:\t\tnot supported\n");
2949 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2950 }
2951
2952 return len;
2953 }
2954
2955 static void hotkey_enabledisable_warn(bool enable)
2956 {
2957 tpacpi_log_usertask("procfs hotkey enable/disable");
2958 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable),
2959 TPACPI_WARN
2960 "hotkey enable/disable functionality has been "
2961 "removed from the driver. Hotkeys are always "
2962 "enabled\n"))
2963 printk(TPACPI_ERR
2964 "Please remove the hotkey=enable module "
2965 "parameter, it is deprecated. Hotkeys are always "
2966 "enabled\n");
2967 }
2968
2969 static int hotkey_write(char *buf)
2970 {
2971 int res;
2972 u32 mask;
2973 char *cmd;
2974
2975 if (!tp_features.hotkey)
2976 return -ENODEV;
2977
2978 if (mutex_lock_killable(&hotkey_mutex))
2979 return -ERESTARTSYS;
2980
2981 mask = hotkey_mask;
2982
2983 res = 0;
2984 while ((cmd = next_cmd(&buf))) {
2985 if (strlencmp(cmd, "enable") == 0) {
2986 hotkey_enabledisable_warn(1);
2987 } else if (strlencmp(cmd, "disable") == 0) {
2988 hotkey_enabledisable_warn(0);
2989 res = -EPERM;
2990 } else if (strlencmp(cmd, "reset") == 0) {
2991 mask = hotkey_orig_mask;
2992 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2993 /* mask set */
2994 } else if (sscanf(cmd, "%x", &mask) == 1) {
2995 /* mask set */
2996 } else {
2997 res = -EINVAL;
2998 goto errexit;
2999 }
3000 }
3001
3002 if (!res)
3003 tpacpi_disclose_usertask("procfs hotkey",
3004 "set mask to 0x%08x\n", mask);
3005
3006 if (!res && mask != hotkey_mask)
3007 res = hotkey_mask_set(mask);
3008
3009 errexit:
3010 mutex_unlock(&hotkey_mutex);
3011 return res;
3012 }
3013
3014 static const struct acpi_device_id ibm_htk_device_ids[] = {
3015 {TPACPI_ACPI_HKEY_HID, 0},
3016 {"", 0},
3017 };
3018
3019 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
3020 .hid = ibm_htk_device_ids,
3021 .notify = hotkey_notify,
3022 .handle = &hkey_handle,
3023 .type = ACPI_DEVICE_NOTIFY,
3024 };
3025
3026 static struct ibm_struct hotkey_driver_data = {
3027 .name = "hotkey",
3028 .read = hotkey_read,
3029 .write = hotkey_write,
3030 .exit = hotkey_exit,
3031 .resume = hotkey_resume,
3032 .suspend = hotkey_suspend,
3033 .acpi = &ibm_hotkey_acpidriver,
3034 };
3035
3036 /*************************************************************************
3037 * Bluetooth subdriver
3038 */
3039
3040 enum {
3041 /* ACPI GBDC/SBDC bits */
3042 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3043 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
3044 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
3045 off / last state */
3046 };
3047
3048 enum {
3049 /* ACPI \BLTH commands */
3050 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3051 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3052 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3053 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3054 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
3055 };
3056
3057 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
3058
3059 static struct rfkill *tpacpi_bluetooth_rfkill;
3060
3061 static void bluetooth_suspend(pm_message_t state)
3062 {
3063 /* Try to make sure radio will resume powered off */
3064 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3065 TP_ACPI_BLTH_PWR_OFF_ON_RESUME))
3066 vdbg_printk(TPACPI_DBG_RFKILL,
3067 "bluetooth power down on resume request failed\n");
3068 }
3069
3070 static int bluetooth_get_radiosw(void)
3071 {
3072 int status;
3073
3074 if (!tp_features.bluetooth)
3075 return -ENODEV;
3076
3077 /* WLSW overrides bluetooth in firmware/hardware, reflect that */
3078 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3079 return RFKILL_STATE_HARD_BLOCKED;
3080
3081 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3082 if (dbg_bluetoothemul)
3083 return (tpacpi_bluetooth_emulstate) ?
3084 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3085 #endif
3086
3087 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3088 return -EIO;
3089
3090 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
3091 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3092 }
3093
3094 static void bluetooth_update_rfk(void)
3095 {
3096 int status;
3097
3098 if (!tpacpi_bluetooth_rfkill)
3099 return;
3100
3101 status = bluetooth_get_radiosw();
3102 if (status < 0)
3103 return;
3104 rfkill_force_state(tpacpi_bluetooth_rfkill, status);
3105
3106 vdbg_printk(TPACPI_DBG_RFKILL,
3107 "forced rfkill state to %d\n",
3108 status);
3109 }
3110
3111 static int bluetooth_set_radiosw(int radio_on, int update_rfk)
3112 {
3113 int status;
3114
3115 if (!tp_features.bluetooth)
3116 return -ENODEV;
3117
3118 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3119 * reason to risk weird behaviour. */
3120 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3121 && radio_on)
3122 return -EPERM;
3123
3124 vdbg_printk(TPACPI_DBG_RFKILL,
3125 "will %s bluetooth\n", radio_on ? "enable" : "disable");
3126
3127 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3128 if (dbg_bluetoothemul) {
3129 tpacpi_bluetooth_emulstate = !!radio_on;
3130 if (update_rfk)
3131 bluetooth_update_rfk();
3132 return 0;
3133 }
3134 #endif
3135
3136 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
3137 if (radio_on)
3138 status = TP_ACPI_BLUETOOTH_RADIOSSW;
3139 else
3140 status = 0;
3141 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3142 return -EIO;
3143
3144 if (update_rfk)
3145 bluetooth_update_rfk();
3146
3147 return 0;
3148 }
3149
3150 /* sysfs bluetooth enable ---------------------------------------------- */
3151 static ssize_t bluetooth_enable_show(struct device *dev,
3152 struct device_attribute *attr,
3153 char *buf)
3154 {
3155 int status;
3156
3157 printk_deprecated_rfkill_attribute("bluetooth_enable");
3158
3159 status = bluetooth_get_radiosw();
3160 if (status < 0)
3161 return status;
3162
3163 return snprintf(buf, PAGE_SIZE, "%d\n",
3164 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
3165 }
3166
3167 static ssize_t bluetooth_enable_store(struct device *dev,
3168 struct device_attribute *attr,
3169 const char *buf, size_t count)
3170 {
3171 unsigned long t;
3172 int res;
3173
3174 printk_deprecated_rfkill_attribute("bluetooth_enable");
3175
3176 if (parse_strtoul(buf, 1, &t))
3177 return -EINVAL;
3178
3179 tpacpi_disclose_usertask("bluetooth_enable", "set to %ld\n", t);
3180
3181 res = bluetooth_set_radiosw(t, 1);
3182
3183 return (res) ? res : count;
3184 }
3185
3186 static struct device_attribute dev_attr_bluetooth_enable =
3187 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
3188 bluetooth_enable_show, bluetooth_enable_store);
3189
3190 /* --------------------------------------------------------------------- */
3191
3192 static struct attribute *bluetooth_attributes[] = {
3193 &dev_attr_bluetooth_enable.attr,
3194 NULL
3195 };
3196
3197 static const struct attribute_group bluetooth_attr_group = {
3198 .attrs = bluetooth_attributes,
3199 };
3200
3201 static int tpacpi_bluetooth_rfk_get(void *data, enum rfkill_state *state)
3202 {
3203 int bts = bluetooth_get_radiosw();
3204
3205 if (bts < 0)
3206 return bts;
3207
3208 *state = bts;
3209 return 0;
3210 }
3211
3212 static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
3213 {
3214 dbg_printk(TPACPI_DBG_RFKILL,
3215 "request to change radio state to %d\n", state);
3216 return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3217 }
3218
3219 static void bluetooth_shutdown(void)
3220 {
3221 /* Order firmware to save current state to NVRAM */
3222 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3223 TP_ACPI_BLTH_SAVE_STATE))
3224 printk(TPACPI_NOTICE
3225 "failed to save bluetooth state to NVRAM\n");
3226 else
3227 vdbg_printk(TPACPI_DBG_RFKILL,
3228 "bluestooth state saved to NVRAM\n");
3229 }
3230
3231 static void bluetooth_exit(void)
3232 {
3233 bluetooth_shutdown();
3234
3235 if (tpacpi_bluetooth_rfkill)
3236 rfkill_unregister(tpacpi_bluetooth_rfkill);
3237
3238 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3239 &bluetooth_attr_group);
3240 }
3241
3242 static int __init bluetooth_init(struct ibm_init_struct *iibm)
3243 {
3244 int res;
3245 int status = 0;
3246
3247 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3248 "initializing bluetooth subdriver\n");
3249
3250 TPACPI_ACPIHANDLE_INIT(hkey);
3251
3252 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3253 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
3254 tp_features.bluetooth = hkey_handle &&
3255 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
3256
3257 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3258 "bluetooth is %s, status 0x%02x\n",
3259 str_supported(tp_features.bluetooth),
3260 status);
3261
3262 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3263 if (dbg_bluetoothemul) {
3264 tp_features.bluetooth = 1;
3265 printk(TPACPI_INFO
3266 "bluetooth switch emulation enabled\n");
3267 } else
3268 #endif
3269 if (tp_features.bluetooth &&
3270 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
3271 /* no bluetooth hardware present in system */
3272 tp_features.bluetooth = 0;
3273 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3274 "bluetooth hardware not installed\n");
3275 }
3276
3277 if (!tp_features.bluetooth)
3278 return 1;
3279
3280 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3281 &bluetooth_attr_group);
3282 if (res)
3283 return res;
3284
3285 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
3286 &tpacpi_bluetooth_rfkill,
3287 RFKILL_TYPE_BLUETOOTH,
3288 TPACPI_RFK_BLUETOOTH_SW_NAME,
3289 true,
3290 tpacpi_bluetooth_rfk_set,
3291 tpacpi_bluetooth_rfk_get);
3292 if (res) {
3293 bluetooth_exit();
3294 return res;
3295 }
3296
3297 return 0;
3298 }
3299
3300 /* procfs -------------------------------------------------------------- */
3301 static int bluetooth_read(char *p)
3302 {
3303 int len = 0;
3304 int status = bluetooth_get_radiosw();
3305
3306 if (!tp_features.bluetooth)
3307 len += sprintf(p + len, "status:\t\tnot supported\n");
3308 else {
3309 len += sprintf(p + len, "status:\t\t%s\n",
3310 (status == RFKILL_STATE_UNBLOCKED) ?
3311 "enabled" : "disabled");
3312 len += sprintf(p + len, "commands:\tenable, disable\n");
3313 }
3314
3315 return len;
3316 }
3317
3318 static int bluetooth_write(char *buf)
3319 {
3320 char *cmd;
3321 int state = -1;
3322
3323 if (!tp_features.bluetooth)
3324 return -ENODEV;
3325
3326 while ((cmd = next_cmd(&buf))) {
3327 if (strlencmp(cmd, "enable") == 0) {
3328 state = 1;
3329 } else if (strlencmp(cmd, "disable") == 0) {
3330 state = 0;
3331 } else
3332 return -EINVAL;
3333 }
3334
3335 if (state != -1) {
3336 tpacpi_disclose_usertask("procfs bluetooth",
3337 "attempt to %s\n",
3338 state ? "enable" : "disable");
3339 bluetooth_set_radiosw(state, 1);
3340 }
3341
3342 return 0;
3343 }
3344
3345 static struct ibm_struct bluetooth_driver_data = {
3346 .name = "bluetooth",
3347 .read = bluetooth_read,
3348 .write = bluetooth_write,
3349 .exit = bluetooth_exit,
3350 .suspend = bluetooth_suspend,
3351 .shutdown = bluetooth_shutdown,
3352 };
3353
3354 /*************************************************************************
3355 * Wan subdriver
3356 */
3357
3358 enum {
3359 /* ACPI GWAN/SWAN bits */
3360 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
3361 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
3362 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
3363 off / last state */
3364 };
3365
3366 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
3367
3368 static struct rfkill *tpacpi_wan_rfkill;
3369
3370 static void wan_suspend(pm_message_t state)
3371 {
3372 /* Try to make sure radio will resume powered off */
3373 if (!acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
3374 TP_ACPI_WGSV_PWR_OFF_ON_RESUME))
3375 vdbg_printk(TPACPI_DBG_RFKILL,
3376 "WWAN power down on resume request failed\n");
3377 }
3378
3379 static int wan_get_radiosw(void)
3380 {
3381 int status;
3382
3383 if (!tp_features.wan)
3384 return -ENODEV;
3385
3386 /* WLSW overrides WWAN in firmware/hardware, reflect that */
3387 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3388 return RFKILL_STATE_HARD_BLOCKED;
3389
3390 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3391 if (dbg_wwanemul)
3392 return (tpacpi_wwan_emulstate) ?
3393 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3394 #endif
3395
3396 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
3397 return -EIO;
3398
3399 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
3400 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3401 }
3402
3403 static void wan_update_rfk(void)
3404 {
3405 int status;
3406
3407 if (!tpacpi_wan_rfkill)
3408 return;
3409
3410 status = wan_get_radiosw();
3411 if (status < 0)
3412 return;
3413 rfkill_force_state(tpacpi_wan_rfkill, status);
3414
3415 vdbg_printk(TPACPI_DBG_RFKILL,
3416 "forced rfkill state to %d\n",
3417 status);
3418 }
3419
3420 static int wan_set_radiosw(int radio_on, int update_rfk)
3421 {
3422 int status;
3423
3424 if (!tp_features.wan)
3425 return -ENODEV;
3426
3427 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3428 * reason to risk weird behaviour. */
3429 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3430 && radio_on)
3431 return -EPERM;
3432
3433 vdbg_printk(TPACPI_DBG_RFKILL,
3434 "will %s WWAN\n", radio_on ? "enable" : "disable");
3435
3436 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3437 if (dbg_wwanemul) {
3438 tpacpi_wwan_emulstate = !!radio_on;
3439 if (update_rfk)
3440 wan_update_rfk();
3441 return 0;
3442 }
3443 #endif
3444
3445 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
3446 if (radio_on)
3447 status = TP_ACPI_WANCARD_RADIOSSW;
3448 else
3449 status = 0;
3450 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
3451 return -EIO;
3452
3453 if (update_rfk)
3454 wan_update_rfk();
3455
3456 return 0;
3457 }
3458
3459 /* sysfs wan enable ---------------------------------------------------- */
3460 static ssize_t wan_enable_show(struct device *dev,
3461 struct device_attribute *attr,
3462 char *buf)
3463 {
3464 int status;
3465
3466 printk_deprecated_rfkill_attribute("wwan_enable");
3467
3468 status = wan_get_radiosw();
3469 if (status < 0)
3470 return status;
3471
3472 return snprintf(buf, PAGE_SIZE, "%d\n",
3473 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
3474 }
3475
3476 static ssize_t wan_enable_store(struct device *dev,
3477 struct device_attribute *attr,
3478 const char *buf, size_t count)
3479 {
3480 unsigned long t;
3481 int res;
3482
3483 printk_deprecated_rfkill_attribute("wwan_enable");
3484
3485 if (parse_strtoul(buf, 1, &t))
3486 return -EINVAL;
3487
3488 tpacpi_disclose_usertask("wwan_enable", "set to %ld\n", t);
3489
3490 res = wan_set_radiosw(t, 1);
3491
3492 return (res) ? res : count;
3493 }
3494
3495 static struct device_attribute dev_attr_wan_enable =
3496 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
3497 wan_enable_show, wan_enable_store);
3498
3499 /* --------------------------------------------------------------------- */
3500
3501 static struct attribute *wan_attributes[] = {
3502 &dev_attr_wan_enable.attr,
3503 NULL
3504 };
3505
3506 static const struct attribute_group wan_attr_group = {
3507 .attrs = wan_attributes,
3508 };
3509
3510 static int tpacpi_wan_rfk_get(void *data, enum rfkill_state *state)
3511 {
3512 int wans = wan_get_radiosw();
3513
3514 if (wans < 0)
3515 return wans;
3516
3517 *state = wans;
3518 return 0;
3519 }
3520
3521 static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
3522 {
3523 dbg_printk(TPACPI_DBG_RFKILL,
3524 "request to change radio state to %d\n", state);
3525 return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3526 }
3527
3528 static void wan_shutdown(void)
3529 {
3530 /* Order firmware to save current state to NVRAM */
3531 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
3532 TP_ACPI_WGSV_SAVE_STATE))
3533 printk(TPACPI_NOTICE
3534 "failed to save WWAN state to NVRAM\n");
3535 else
3536 vdbg_printk(TPACPI_DBG_RFKILL,
3537 "WWAN state saved to NVRAM\n");
3538 }
3539
3540 static void wan_exit(void)
3541 {
3542 wan_shutdown();
3543
3544 if (tpacpi_wan_rfkill)
3545 rfkill_unregister(tpacpi_wan_rfkill);
3546
3547 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3548 &wan_attr_group);
3549 }
3550
3551 static int __init wan_init(struct ibm_init_struct *iibm)
3552 {
3553 int res;
3554 int status = 0;
3555
3556 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3557 "initializing wan subdriver\n");
3558
3559 TPACPI_ACPIHANDLE_INIT(hkey);
3560
3561 tp_features.wan = hkey_handle &&
3562 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
3563
3564 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3565 "wan is %s, status 0x%02x\n",
3566 str_supported(tp_features.wan),
3567 status);
3568
3569 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3570 if (dbg_wwanemul) {
3571 tp_features.wan = 1;
3572 printk(TPACPI_INFO
3573 "wwan switch emulation enabled\n");
3574 } else
3575 #endif
3576 if (tp_features.wan &&
3577 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
3578 /* no wan hardware present in system */
3579 tp_features.wan = 0;
3580 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3581 "wan hardware not installed\n");
3582 }
3583
3584 if (!tp_features.wan)
3585 return 1;
3586
3587 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3588 &wan_attr_group);
3589 if (res)
3590 return res;
3591
3592 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
3593 &tpacpi_wan_rfkill,
3594 RFKILL_TYPE_WWAN,
3595 TPACPI_RFK_WWAN_SW_NAME,
3596 true,
3597 tpacpi_wan_rfk_set,
3598 tpacpi_wan_rfk_get);
3599 if (res) {
3600 wan_exit();
3601 return res;
3602 }
3603
3604 return 0;
3605 }
3606
3607 /* procfs -------------------------------------------------------------- */
3608 static int wan_read(char *p)
3609 {
3610 int len = 0;
3611 int status = wan_get_radiosw();
3612
3613 tpacpi_disclose_usertask("procfs wan", "read");
3614
3615 if (!tp_features.wan)
3616 len += sprintf(p + len, "status:\t\tnot supported\n");
3617 else {
3618 len += sprintf(p + len, "status:\t\t%s\n",
3619 (status == RFKILL_STATE_UNBLOCKED) ?
3620 "enabled" : "disabled");
3621 len += sprintf(p + len, "commands:\tenable, disable\n");
3622 }
3623
3624 return len;
3625 }
3626
3627 static int wan_write(char *buf)
3628 {
3629 char *cmd;
3630 int state = -1;
3631
3632 if (!tp_features.wan)
3633 return -ENODEV;
3634
3635 while ((cmd = next_cmd(&buf))) {
3636 if (strlencmp(cmd, "enable") == 0) {
3637 state = 1;
3638 } else if (strlencmp(cmd, "disable") == 0) {
3639 state = 0;
3640 } else
3641 return -EINVAL;
3642 }
3643
3644 if (state != -1) {
3645 tpacpi_disclose_usertask("procfs wan",
3646 "attempt to %s\n",
3647 state ? "enable" : "disable");
3648 wan_set_radiosw(state, 1);
3649 }
3650
3651 return 0;
3652 }
3653
3654 static struct ibm_struct wan_driver_data = {
3655 .name = "wan",
3656 .read = wan_read,
3657 .write = wan_write,
3658 .exit = wan_exit,
3659 .suspend = wan_suspend,
3660 .shutdown = wan_shutdown,
3661 };
3662
3663 /*************************************************************************
3664 * UWB subdriver
3665 */
3666
3667 enum {
3668 /* ACPI GUWB/SUWB bits */
3669 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
3670 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
3671 };
3672
3673 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
3674
3675 static struct rfkill *tpacpi_uwb_rfkill;
3676
3677 static int uwb_get_radiosw(void)
3678 {
3679 int status;
3680
3681 if (!tp_features.uwb)
3682 return -ENODEV;
3683
3684 /* WLSW overrides UWB in firmware/hardware, reflect that */
3685 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3686 return RFKILL_STATE_HARD_BLOCKED;
3687
3688 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3689 if (dbg_uwbemul)
3690 return (tpacpi_uwb_emulstate) ?
3691 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3692 #endif
3693
3694 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
3695 return -EIO;
3696
3697 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
3698 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3699 }
3700
3701 static void uwb_update_rfk(void)
3702 {
3703 int status;
3704
3705 if (!tpacpi_uwb_rfkill)
3706 return;
3707
3708 status = uwb_get_radiosw();
3709 if (status < 0)
3710 return;
3711 rfkill_force_state(tpacpi_uwb_rfkill, status);
3712
3713 vdbg_printk(TPACPI_DBG_RFKILL,
3714 "forced rfkill state to %d\n",
3715 status);
3716 }
3717
3718 static int uwb_set_radiosw(int radio_on, int update_rfk)
3719 {
3720 int status;
3721
3722 if (!tp_features.uwb)
3723 return -ENODEV;
3724
3725 /* WLSW overrides UWB in firmware/hardware, but there is no
3726 * reason to risk weird behaviour. */
3727 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3728 && radio_on)
3729 return -EPERM;
3730
3731 vdbg_printk(TPACPI_DBG_RFKILL,
3732 "will %s UWB\n", radio_on ? "enable" : "disable");
3733
3734 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3735 if (dbg_uwbemul) {
3736 tpacpi_uwb_emulstate = !!radio_on;
3737 if (update_rfk)
3738 uwb_update_rfk();
3739 return 0;
3740 }
3741 #endif
3742
3743 status = (radio_on) ? TP_ACPI_UWB_RADIOSSW : 0;
3744 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
3745 return -EIO;
3746
3747 if (update_rfk)
3748 uwb_update_rfk();
3749
3750 return 0;
3751 }
3752
3753 /* --------------------------------------------------------------------- */
3754
3755 static int tpacpi_uwb_rfk_get(void *data, enum rfkill_state *state)
3756 {
3757 int uwbs = uwb_get_radiosw();
3758
3759 if (uwbs < 0)
3760 return uwbs;
3761
3762 *state = uwbs;
3763 return 0;
3764 }
3765
3766 static int tpacpi_uwb_rfk_set(void *data, enum rfkill_state state)
3767 {
3768 dbg_printk(TPACPI_DBG_RFKILL,
3769 "request to change radio state to %d\n", state);
3770 return uwb_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3771 }
3772
3773 static void uwb_exit(void)
3774 {
3775 if (tpacpi_uwb_rfkill)
3776 rfkill_unregister(tpacpi_uwb_rfkill);
3777 }
3778
3779 static int __init uwb_init(struct ibm_init_struct *iibm)
3780 {
3781 int res;
3782 int status = 0;
3783
3784 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3785 "initializing uwb subdriver\n");
3786
3787 TPACPI_ACPIHANDLE_INIT(hkey);
3788
3789 tp_features.uwb = hkey_handle &&
3790 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
3791
3792 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL,
3793 "uwb is %s, status 0x%02x\n",
3794 str_supported(tp_features.uwb),
3795 status);
3796
3797 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3798 if (dbg_uwbemul) {
3799 tp_features.uwb = 1;
3800 printk(TPACPI_INFO
3801 "uwb switch emulation enabled\n");
3802 } else
3803 #endif
3804 if (tp_features.uwb &&
3805 !(status & TP_ACPI_UWB_HWPRESENT)) {
3806 /* no uwb hardware present in system */
3807 tp_features.uwb = 0;
3808 dbg_printk(TPACPI_DBG_INIT,
3809 "uwb hardware not installed\n");
3810 }
3811
3812 if (!tp_features.uwb)
3813 return 1;
3814
3815 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
3816 &tpacpi_uwb_rfkill,
3817 RFKILL_TYPE_UWB,
3818 TPACPI_RFK_UWB_SW_NAME,
3819 false,
3820 tpacpi_uwb_rfk_set,
3821 tpacpi_uwb_rfk_get);
3822
3823 return res;
3824 }
3825
3826 static struct ibm_struct uwb_driver_data = {
3827 .name = "uwb",
3828 .exit = uwb_exit,
3829 .flags.experimental = 1,
3830 };
3831
3832 /*************************************************************************
3833 * Video subdriver
3834 */
3835
3836 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
3837
3838 enum video_access_mode {
3839 TPACPI_VIDEO_NONE = 0,
3840 TPACPI_VIDEO_570, /* 570 */
3841 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
3842 TPACPI_VIDEO_NEW, /* all others */
3843 };
3844
3845 enum { /* video status flags, based on VIDEO_570 */
3846 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
3847 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
3848 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
3849 };
3850
3851 enum { /* TPACPI_VIDEO_570 constants */
3852 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
3853 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
3854 * video_status_flags */
3855 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
3856 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
3857 };
3858
3859 static enum video_access_mode video_supported;
3860 static int video_orig_autosw;
3861
3862 static int video_autosw_get(void);
3863 static int video_autosw_set(int enable);
3864
3865 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
3866
3867 static int __init video_init(struct ibm_init_struct *iibm)
3868 {
3869 int ivga;
3870
3871 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
3872
3873 TPACPI_ACPIHANDLE_INIT(vid);
3874 TPACPI_ACPIHANDLE_INIT(vid2);
3875
3876 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
3877 /* G41, assume IVGA doesn't change */
3878 vid_handle = vid2_handle;
3879
3880 if (!vid_handle)
3881 /* video switching not supported on R30, R31 */
3882 video_supported = TPACPI_VIDEO_NONE;
3883 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
3884 /* 570 */
3885 video_supported = TPACPI_VIDEO_570;
3886 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
3887 /* 600e/x, 770e, 770x */
3888 video_supported = TPACPI_VIDEO_770;
3889 else
3890 /* all others */
3891 video_supported = TPACPI_VIDEO_NEW;
3892
3893 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
3894 str_supported(video_supported != TPACPI_VIDEO_NONE),
3895 video_supported);
3896
3897 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
3898 }
3899
3900 static void video_exit(void)
3901 {
3902 dbg_printk(TPACPI_DBG_EXIT,
3903 "restoring original video autoswitch mode\n");
3904 if (video_autosw_set(video_orig_autosw))
3905 printk(TPACPI_ERR "error while trying to restore original "
3906 "video autoswitch mode\n");
3907 }
3908
3909 static int video_outputsw_get(void)
3910 {
3911 int status = 0;
3912 int i;
3913
3914 switch (video_supported) {
3915 case TPACPI_VIDEO_570:
3916 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
3917 TP_ACPI_VIDEO_570_PHSCMD))
3918 return -EIO;
3919 status = i & TP_ACPI_VIDEO_570_PHSMASK;
3920 break;
3921 case TPACPI_VIDEO_770:
3922 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
3923 return -EIO;
3924 if (i)
3925 status |= TP_ACPI_VIDEO_S_LCD;
3926 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
3927 return -EIO;
3928 if (i)
3929 status |= TP_ACPI_VIDEO_S_CRT;
3930 break;
3931 case TPACPI_VIDEO_NEW:
3932 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
3933 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
3934 return -EIO;
3935 if (i)
3936 status |= TP_ACPI_VIDEO_S_CRT;
3937
3938 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
3939 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
3940 return -EIO;
3941 if (i)
3942 status |= TP_ACPI_VIDEO_S_LCD;
3943 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
3944 return -EIO;
3945 if (i)
3946 status |= TP_ACPI_VIDEO_S_DVI;
3947 break;
3948 default:
3949 return -ENOSYS;
3950 }
3951
3952 return status;
3953 }
3954
3955 static int video_outputsw_set(int status)
3956 {
3957 int autosw;
3958 int res = 0;
3959
3960 switch (video_supported) {
3961 case TPACPI_VIDEO_570:
3962 res = acpi_evalf(NULL, NULL,
3963 "\\_SB.PHS2", "vdd",
3964 TP_ACPI_VIDEO_570_PHS2CMD,
3965 status | TP_ACPI_VIDEO_570_PHS2SET);
3966 break;
3967 case TPACPI_VIDEO_770:
3968 autosw = video_autosw_get();
3969 if (autosw < 0)
3970 return autosw;
3971
3972 res = video_autosw_set(1);
3973 if (res)
3974 return res;
3975 res = acpi_evalf(vid_handle, NULL,
3976 "ASWT", "vdd", status * 0x100, 0);
3977 if (!autosw && video_autosw_set(autosw)) {
3978 printk(TPACPI_ERR
3979 "video auto-switch left enabled due to error\n");
3980 return -EIO;
3981 }
3982 break;
3983 case TPACPI_VIDEO_NEW:
3984 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
3985 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
3986 break;
3987 default:
3988 return -ENOSYS;
3989 }
3990
3991 return (res)? 0 : -EIO;
3992 }
3993
3994 static int video_autosw_get(void)
3995 {
3996 int autosw = 0;
3997
3998 switch (video_supported) {
3999 case TPACPI_VIDEO_570:
4000 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
4001 return -EIO;
4002 break;
4003 case TPACPI_VIDEO_770:
4004 case TPACPI_VIDEO_NEW:
4005 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
4006 return -EIO;
4007 break;
4008 default:
4009 return -ENOSYS;
4010 }
4011
4012 return autosw & 1;
4013 }
4014
4015 static int video_autosw_set(int enable)
4016 {
4017 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
4018 return -EIO;
4019 return 0;
4020 }
4021
4022 static int video_outputsw_cycle(void)
4023 {
4024 int autosw = video_autosw_get();
4025 int res;
4026
4027 if (autosw < 0)
4028 return autosw;
4029
4030 switch (video_supported) {
4031 case TPACPI_VIDEO_570:
4032 res = video_autosw_set(1);
4033 if (res)
4034 return res;
4035 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
4036 break;
4037 case TPACPI_VIDEO_770:
4038 case TPACPI_VIDEO_NEW:
4039 res = video_autosw_set(1);
4040 if (res)
4041 return res;
4042 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
4043 break;
4044 default:
4045 return -ENOSYS;
4046 }
4047 if (!autosw && video_autosw_set(autosw)) {
4048 printk(TPACPI_ERR
4049 "video auto-switch left enabled due to error\n");
4050 return -EIO;
4051 }
4052
4053 return (res)? 0 : -EIO;
4054 }
4055
4056 static int video_expand_toggle(void)
4057 {
4058 switch (video_supported) {
4059 case TPACPI_VIDEO_570:
4060 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
4061 0 : -EIO;
4062 case TPACPI_VIDEO_770:
4063 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
4064 0 : -EIO;
4065 case TPACPI_VIDEO_NEW:
4066 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
4067 0 : -EIO;
4068 default:
4069 return -ENOSYS;
4070 }
4071 /* not reached */
4072 }
4073
4074 static int video_read(char *p)
4075 {
4076 int status, autosw;
4077 int len = 0;
4078
4079 if (video_supported == TPACPI_VIDEO_NONE) {
4080 len += sprintf(p + len, "status:\t\tnot supported\n");
4081 return len;
4082 }
4083
4084 status = video_outputsw_get();
4085 if (status < 0)
4086 return status;
4087
4088 autosw = video_autosw_get();
4089 if (autosw < 0)
4090 return autosw;
4091
4092 len += sprintf(p + len, "status:\t\tsupported\n");
4093 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
4094 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
4095 if (video_supported == TPACPI_VIDEO_NEW)
4096 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
4097 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
4098 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
4099 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
4100 if (video_supported == TPACPI_VIDEO_NEW)
4101 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
4102 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
4103 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
4104
4105 return len;
4106 }
4107
4108 static int video_write(char *buf)
4109 {
4110 char *cmd;
4111 int enable, disable, status;
4112 int res;
4113
4114 if (video_supported == TPACPI_VIDEO_NONE)
4115 return -ENODEV;
4116
4117 enable = 0;
4118 disable = 0;
4119
4120 while ((cmd = next_cmd(&buf))) {
4121 if (strlencmp(cmd, "lcd_enable") == 0) {
4122 enable |= TP_ACPI_VIDEO_S_LCD;
4123 } else if (strlencmp(cmd, "lcd_disable") == 0) {
4124 disable |= TP_ACPI_VIDEO_S_LCD;
4125 } else if (strlencmp(cmd, "crt_enable") == 0) {
4126 enable |= TP_ACPI_VIDEO_S_CRT;
4127 } else if (strlencmp(cmd, "crt_disable") == 0) {
4128 disable |= TP_ACPI_VIDEO_S_CRT;
4129 } else if (video_supported == TPACPI_VIDEO_NEW &&
4130 strlencmp(cmd, "dvi_enable") == 0) {
4131 enable |= TP_ACPI_VIDEO_S_DVI;
4132 } else if (video_supported == TPACPI_VIDEO_NEW &&
4133 strlencmp(cmd, "dvi_disable") == 0) {
4134 disable |= TP_ACPI_VIDEO_S_DVI;
4135 } else if (strlencmp(cmd, "auto_enable") == 0) {
4136 res = video_autosw_set(1);
4137 if (res)
4138 return res;
4139 } else if (strlencmp(cmd, "auto_disable") == 0) {
4140 res = video_autosw_set(0);
4141 if (res)
4142 return res;
4143 } else if (strlencmp(cmd, "video_switch") == 0) {
4144 res = video_outputsw_cycle();
4145 if (res)
4146 return res;
4147 } else if (strlencmp(cmd, "expand_toggle") == 0) {
4148 res = video_expand_toggle();
4149 if (res)
4150 return res;
4151 } else
4152 return -EINVAL;
4153 }
4154
4155 if (enable || disable) {
4156 status = video_outputsw_get();
4157 if (status < 0)
4158 return status;
4159 res = video_outputsw_set((status & ~disable) | enable);
4160 if (res)
4161 return res;
4162 }
4163
4164 return 0;
4165 }
4166
4167 static struct ibm_struct video_driver_data = {
4168 .name = "video",
4169 .read = video_read,
4170 .write = video_write,
4171 .exit = video_exit,
4172 };
4173
4174 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4175
4176 /*************************************************************************
4177 * Light (thinklight) subdriver
4178 */
4179
4180 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4181 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
4182
4183 static int light_get_status(void)
4184 {
4185 int status = 0;
4186
4187 if (tp_features.light_status) {
4188 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4189 return -EIO;
4190 return (!!status);
4191 }
4192
4193 return -ENXIO;
4194 }
4195
4196 static int light_set_status(int status)
4197 {
4198 int rc;
4199
4200 if (tp_features.light) {
4201 if (cmos_handle) {
4202 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4203 (status)?
4204 TP_CMOS_THINKLIGHT_ON :
4205 TP_CMOS_THINKLIGHT_OFF);
4206 } else {
4207 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4208 (status)? 1 : 0);
4209 }
4210 return (rc)? 0 : -EIO;
4211 }
4212
4213 return -ENXIO;
4214 }
4215
4216 static void light_set_status_worker(struct work_struct *work)
4217 {
4218 struct tpacpi_led_classdev *data =
4219 container_of(work, struct tpacpi_led_classdev, work);
4220
4221 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4222 light_set_status((data->new_state != TPACPI_LED_OFF));
4223 }
4224
4225 static void light_sysfs_set(struct led_classdev *led_cdev,
4226 enum led_brightness brightness)
4227 {
4228 struct tpacpi_led_classdev *data =
4229 container_of(led_cdev,
4230 struct tpacpi_led_classdev,
4231 led_classdev);
4232 data->new_state = (brightness != LED_OFF) ?
4233 TPACPI_LED_ON : TPACPI_LED_OFF;
4234 queue_work(tpacpi_wq, &data->work);
4235 }
4236
4237 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4238 {
4239 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4240 }
4241
4242 static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4243 .led_classdev = {
4244 .name = "tpacpi::thinklight",
4245 .brightness_set = &light_sysfs_set,
4246 .brightness_get = &light_sysfs_get,
4247 }
4248 };
4249
4250 static int __init light_init(struct ibm_init_struct *iibm)
4251 {
4252 int rc;
4253
4254 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4255
4256 TPACPI_ACPIHANDLE_INIT(ledb);
4257 TPACPI_ACPIHANDLE_INIT(lght);
4258 TPACPI_ACPIHANDLE_INIT(cmos);
4259 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
4260
4261 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4262 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
4263
4264 if (tp_features.light)
4265 /* light status not supported on
4266 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4267 tp_features.light_status =
4268 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
4269
4270 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4271 str_supported(tp_features.light),
4272 str_supported(tp_features.light_status));
4273
4274 if (!tp_features.light)
4275 return 1;
4276
4277 rc = led_classdev_register(&tpacpi_pdev->dev,
4278 &tpacpi_led_thinklight.led_classdev);
4279
4280 if (rc < 0) {
4281 tp_features.light = 0;
4282 tp_features.light_status = 0;
4283 } else {
4284 rc = 0;
4285 }
4286
4287 return rc;
4288 }
4289
4290 static void light_exit(void)
4291 {
4292 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4293 if (work_pending(&tpacpi_led_thinklight.work))
4294 flush_workqueue(tpacpi_wq);
4295 }
4296
4297 static int light_read(char *p)
4298 {
4299 int len = 0;
4300 int status;
4301
4302 if (!tp_features.light) {
4303 len += sprintf(p + len, "status:\t\tnot supported\n");
4304 } else if (!tp_features.light_status) {
4305 len += sprintf(p + len, "status:\t\tunknown\n");
4306 len += sprintf(p + len, "commands:\ton, off\n");
4307 } else {
4308 status = light_get_status();
4309 if (status < 0)
4310 return status;
4311 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
4312 len += sprintf(p + len, "commands:\ton, off\n");
4313 }
4314
4315 return len;
4316 }
4317
4318 static int light_write(char *buf)
4319 {
4320 char *cmd;
4321 int newstatus = 0;
4322
4323 if (!tp_features.light)
4324 return -ENODEV;
4325
4326 while ((cmd = next_cmd(&buf))) {
4327 if (strlencmp(cmd, "on") == 0) {
4328 newstatus = 1;
4329 } else if (strlencmp(cmd, "off") == 0) {
4330 newstatus = 0;
4331 } else
4332 return -EINVAL;
4333 }
4334
4335 return light_set_status(newstatus);
4336 }
4337
4338 static struct ibm_struct light_driver_data = {
4339 .name = "light",
4340 .read = light_read,
4341 .write = light_write,
4342 .exit = light_exit,
4343 };
4344
4345 /*************************************************************************
4346 * Dock subdriver
4347 */
4348
4349 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4350
4351 static void dock_notify(struct ibm_struct *ibm, u32 event);
4352 static int dock_read(char *p);
4353 static int dock_write(char *buf);
4354
4355 TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
4356 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
4357 "\\_SB.PCI0.PCI1.DOCK", /* all others */
4358 "\\_SB.PCI.ISA.SLCE", /* 570 */
4359 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
4360
4361 /* don't list other alternatives as we install a notify handler on the 570 */
4362 TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
4363
4364 static const struct acpi_device_id ibm_pci_device_ids[] = {
4365 {PCI_ROOT_HID_STRING, 0},
4366 {"", 0},
4367 };
4368
4369 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
4370 {
4371 .notify = dock_notify,
4372 .handle = &dock_handle,
4373 .type = ACPI_SYSTEM_NOTIFY,
4374 },
4375 {
4376 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
4377 * We just use it to get notifications of dock hotplug
4378 * in very old thinkpads */
4379 .hid = ibm_pci_device_ids,
4380 .notify = dock_notify,
4381 .handle = &pci_handle,
4382 .type = ACPI_SYSTEM_NOTIFY,
4383 },
4384 };
4385
4386 static struct ibm_struct dock_driver_data[2] = {
4387 {
4388 .name = "dock",
4389 .read = dock_read,
4390 .write = dock_write,
4391 .acpi = &ibm_dock_acpidriver[0],
4392 },
4393 {
4394 .name = "dock",
4395 .acpi = &ibm_dock_acpidriver[1],
4396 },
4397 };
4398
4399 #define dock_docked() (_sta(dock_handle) & 1)
4400
4401 static int __init dock_init(struct ibm_init_struct *iibm)
4402 {
4403 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
4404
4405 TPACPI_ACPIHANDLE_INIT(dock);
4406
4407 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
4408 str_supported(dock_handle != NULL));
4409
4410 return (dock_handle)? 0 : 1;
4411 }
4412
4413 static int __init dock_init2(struct ibm_init_struct *iibm)
4414 {
4415 int dock2_needed;
4416
4417 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
4418
4419 if (dock_driver_data[0].flags.acpi_driver_registered &&
4420 dock_driver_data[0].flags.acpi_notify_installed) {
4421 TPACPI_ACPIHANDLE_INIT(pci);
4422 dock2_needed = (pci_handle != NULL);
4423 vdbg_printk(TPACPI_DBG_INIT,
4424 "dock PCI handler for the TP 570 is %s\n",
4425 str_supported(dock2_needed));
4426 } else {
4427 vdbg_printk(TPACPI_DBG_INIT,
4428 "dock subdriver part 2 not required\n");
4429 dock2_needed = 0;
4430 }
4431
4432 return (dock2_needed)? 0 : 1;
4433 }
4434
4435 static void dock_notify(struct ibm_struct *ibm, u32 event)
4436 {
4437 int docked = dock_docked();
4438 int pci = ibm->acpi->hid && ibm->acpi->device &&
4439 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
4440 int data;
4441
4442 if (event == 1 && !pci) /* 570 */
4443 data = 1; /* button */
4444 else if (event == 1 && pci) /* 570 */
4445 data = 3; /* dock */
4446 else if (event == 3 && docked)
4447 data = 1; /* button */
4448 else if (event == 3 && !docked)
4449 data = 2; /* undock */
4450 else if (event == 0 && docked)
4451 data = 3; /* dock */
4452 else {
4453 printk(TPACPI_ERR "unknown dock event %d, status %d\n",
4454 event, _sta(dock_handle));
4455 data = 0; /* unknown */
4456 }
4457 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
4458 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
4459 dev_name(&ibm->acpi->device->dev),
4460 event, data);
4461 }
4462
4463 static int dock_read(char *p)
4464 {
4465 int len = 0;
4466 int docked = dock_docked();
4467
4468 if (!dock_handle)
4469 len += sprintf(p + len, "status:\t\tnot supported\n");
4470 else if (!docked)
4471 len += sprintf(p + len, "status:\t\tundocked\n");
4472 else {
4473 len += sprintf(p + len, "status:\t\tdocked\n");
4474 len += sprintf(p + len, "commands:\tdock, undock\n");
4475 }
4476
4477 return len;
4478 }
4479
4480 static int dock_write(char *buf)
4481 {
4482 char *cmd;
4483
4484 if (!dock_docked())
4485 return -ENODEV;
4486
4487 while ((cmd = next_cmd(&buf))) {
4488 if (strlencmp(cmd, "undock") == 0) {
4489 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
4490 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
4491 return -EIO;
4492 } else if (strlencmp(cmd, "dock") == 0) {
4493 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
4494 return -EIO;
4495 } else
4496 return -EINVAL;
4497 }
4498
4499 return 0;
4500 }
4501
4502 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
4503
4504 /*************************************************************************
4505 * Bay subdriver
4506 */
4507
4508 #ifdef CONFIG_THINKPAD_ACPI_BAY
4509
4510 TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
4511 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
4512 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
4513 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
4514 ); /* A21e, R30, R31 */
4515 TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
4516 "_EJ0", /* all others */
4517 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
4518 TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
4519 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
4520 ); /* all others */
4521 TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
4522 "_EJ0", /* 770x */
4523 ); /* all others */
4524
4525 static int __init bay_init(struct ibm_init_struct *iibm)
4526 {
4527 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
4528
4529 TPACPI_ACPIHANDLE_INIT(bay);
4530 if (bay_handle)
4531 TPACPI_ACPIHANDLE_INIT(bay_ej);
4532 TPACPI_ACPIHANDLE_INIT(bay2);
4533 if (bay2_handle)
4534 TPACPI_ACPIHANDLE_INIT(bay2_ej);
4535
4536 tp_features.bay_status = bay_handle &&
4537 acpi_evalf(bay_handle, NULL, "_STA", "qv");
4538 tp_features.bay_status2 = bay2_handle &&
4539 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
4540
4541 tp_features.bay_eject = bay_handle && bay_ej_handle &&
4542 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
4543 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
4544 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
4545
4546 vdbg_printk(TPACPI_DBG_INIT,
4547 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
4548 str_supported(tp_features.bay_status),
4549 str_supported(tp_features.bay_eject),
4550 str_supported(tp_features.bay_status2),
4551 str_supported(tp_features.bay_eject2));
4552
4553 return (tp_features.bay_status || tp_features.bay_eject ||
4554 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
4555 }
4556
4557 static void bay_notify(struct ibm_struct *ibm, u32 event)
4558 {
4559 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
4560 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
4561 dev_name(&ibm->acpi->device->dev),
4562 event, 0);
4563 }
4564
4565 #define bay_occupied(b) (_sta(b##_handle) & 1)
4566
4567 static int bay_read(char *p)
4568 {
4569 int len = 0;
4570 int occupied = bay_occupied(bay);
4571 int occupied2 = bay_occupied(bay2);
4572 int eject, eject2;
4573
4574 len += sprintf(p + len, "status:\t\t%s\n",
4575 tp_features.bay_status ?
4576 (occupied ? "occupied" : "unoccupied") :
4577 "not supported");
4578 if (tp_features.bay_status2)
4579 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
4580 "occupied" : "unoccupied");
4581
4582 eject = tp_features.bay_eject && occupied;
4583 eject2 = tp_features.bay_eject2 && occupied2;
4584
4585 if (eject && eject2)
4586 len += sprintf(p + len, "commands:\teject, eject2\n");
4587 else if (eject)
4588 len += sprintf(p + len, "commands:\teject\n");
4589 else if (eject2)
4590 len += sprintf(p + len, "commands:\teject2\n");
4591
4592 return len;
4593 }
4594
4595 static int bay_write(char *buf)
4596 {
4597 char *cmd;
4598
4599 if (!tp_features.bay_eject && !tp_features.bay_eject2)
4600 return -ENODEV;
4601
4602 while ((cmd = next_cmd(&buf))) {
4603 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
4604 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
4605 return -EIO;
4606 } else if (tp_features.bay_eject2 &&
4607 strlencmp(cmd, "eject2") == 0) {
4608 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
4609 return -EIO;
4610 } else
4611 return -EINVAL;
4612 }
4613
4614 return 0;
4615 }
4616
4617 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
4618 .notify = bay_notify,
4619 .handle = &bay_handle,
4620 .type = ACPI_SYSTEM_NOTIFY,
4621 };
4622
4623 static struct ibm_struct bay_driver_data = {
4624 .name = "bay",
4625 .read = bay_read,
4626 .write = bay_write,
4627 .acpi = &ibm_bay_acpidriver,
4628 };
4629
4630 #endif /* CONFIG_THINKPAD_ACPI_BAY */
4631
4632 /*************************************************************************
4633 * CMOS subdriver
4634 */
4635
4636 /* sysfs cmos_command -------------------------------------------------- */
4637 static ssize_t cmos_command_store(struct device *dev,
4638 struct device_attribute *attr,
4639 const char *buf, size_t count)
4640 {
4641 unsigned long cmos_cmd;
4642 int res;
4643
4644 if (parse_strtoul(buf, 21, &cmos_cmd))
4645 return -EINVAL;
4646
4647 res = issue_thinkpad_cmos_command(cmos_cmd);
4648 return (res)? res : count;
4649 }
4650
4651 static struct device_attribute dev_attr_cmos_command =
4652 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4653
4654 /* --------------------------------------------------------------------- */
4655
4656 static int __init cmos_init(struct ibm_init_struct *iibm)
4657 {
4658 int res;
4659
4660 vdbg_printk(TPACPI_DBG_INIT,
4661 "initializing cmos commands subdriver\n");
4662
4663 TPACPI_ACPIHANDLE_INIT(cmos);
4664
4665 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4666 str_supported(cmos_handle != NULL));
4667
4668 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4669 if (res)
4670 return res;
4671
4672 return (cmos_handle)? 0 : 1;
4673 }
4674
4675 static void cmos_exit(void)
4676 {
4677 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4678 }
4679
4680 static int cmos_read(char *p)
4681 {
4682 int len = 0;
4683
4684 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4685 R30, R31, T20-22, X20-21 */
4686 if (!cmos_handle)
4687 len += sprintf(p + len, "status:\t\tnot supported\n");
4688 else {
4689 len += sprintf(p + len, "status:\t\tsupported\n");
4690 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
4691 }
4692
4693 return len;
4694 }
4695
4696 static int cmos_write(char *buf)
4697 {
4698 char *cmd;
4699 int cmos_cmd, res;
4700
4701 while ((cmd = next_cmd(&buf))) {
4702 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4703 cmos_cmd >= 0 && cmos_cmd <= 21) {
4704 /* cmos_cmd set */
4705 } else
4706 return -EINVAL;
4707
4708 res = issue_thinkpad_cmos_command(cmos_cmd);
4709 if (res)
4710 return res;
4711 }
4712
4713 return 0;
4714 }
4715
4716 static struct ibm_struct cmos_driver_data = {
4717 .name = "cmos",
4718 .read = cmos_read,
4719 .write = cmos_write,
4720 .exit = cmos_exit,
4721 };
4722
4723 /*************************************************************************
4724 * LED subdriver
4725 */
4726
4727 enum led_access_mode {
4728 TPACPI_LED_NONE = 0,
4729 TPACPI_LED_570, /* 570 */
4730 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4731 TPACPI_LED_NEW, /* all others */
4732 };
4733
4734 enum { /* For TPACPI_LED_OLD */
4735 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4736 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4737 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4738 };
4739
4740 static enum led_access_mode led_supported;
4741
4742 TPACPI_HANDLE(led, ec, "SLED", /* 570 */
4743 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4744 /* T20-22, X20-21 */
4745 "LED", /* all others */
4746 ); /* R30, R31 */
4747
4748 #define TPACPI_LED_NUMLEDS 8
4749 static struct tpacpi_led_classdev *tpacpi_leds;
4750 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
4751 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
4752 /* there's a limit of 19 chars + NULL before 2.6.26 */
4753 "tpacpi::power",
4754 "tpacpi:orange:batt",
4755 "tpacpi:green:batt",
4756 "tpacpi::dock_active",
4757 "tpacpi::bay_active",
4758 "tpacpi::dock_batt",
4759 "tpacpi::unknown_led",
4760 "tpacpi::standby",
4761 };
4762 #define TPACPI_SAFE_LEDS 0x0081U
4763
4764 static inline bool tpacpi_is_led_restricted(const unsigned int led)
4765 {
4766 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4767 return false;
4768 #else
4769 return (TPACPI_SAFE_LEDS & (1 << led)) == 0;
4770 #endif
4771 }
4772
4773 static int led_get_status(const unsigned int led)
4774 {
4775 int status;
4776 enum led_status_t led_s;
4777
4778 switch (led_supported) {
4779 case TPACPI_LED_570:
4780 if (!acpi_evalf(ec_handle,
4781 &status, "GLED", "dd", 1 << led))
4782 return -EIO;
4783 led_s = (status == 0)?
4784 TPACPI_LED_OFF :
4785 ((status == 1)?
4786 TPACPI_LED_ON :
4787 TPACPI_LED_BLINK);
4788 tpacpi_led_state_cache[led] = led_s;
4789 return led_s;
4790 default:
4791 return -ENXIO;
4792 }
4793
4794 /* not reached */
4795 }
4796
4797 static int led_set_status(const unsigned int led,
4798 const enum led_status_t ledstatus)
4799 {
4800 /* off, on, blink. Index is led_status_t */
4801 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
4802 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4803
4804 int rc = 0;
4805
4806 switch (led_supported) {
4807 case TPACPI_LED_570:
4808 /* 570 */
4809 if (unlikely(led > 7))
4810 return -EINVAL;
4811 if (unlikely(tpacpi_is_led_restricted(led)))
4812 return -EPERM;
4813 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4814 (1 << led), led_sled_arg1[ledstatus]))
4815 rc = -EIO;
4816 break;
4817 case TPACPI_LED_OLD:
4818 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
4819 if (unlikely(led > 7))
4820 return -EINVAL;
4821 if (unlikely(tpacpi_is_led_restricted(led)))
4822 return -EPERM;
4823 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
4824 if (rc >= 0)
4825 rc = ec_write(TPACPI_LED_EC_HLBL,
4826 (ledstatus == TPACPI_LED_BLINK) << led);
4827 if (rc >= 0)
4828 rc = ec_write(TPACPI_LED_EC_HLCL,
4829 (ledstatus != TPACPI_LED_OFF) << led);
4830 break;
4831 case TPACPI_LED_NEW:
4832 /* all others */
4833 if (unlikely(led >= TPACPI_LED_NUMLEDS))
4834 return -EINVAL;
4835 if (unlikely(tpacpi_is_led_restricted(led)))
4836 return -EPERM;
4837 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4838 led, led_led_arg1[ledstatus]))
4839 rc = -EIO;
4840 break;
4841 default:
4842 rc = -ENXIO;
4843 }
4844
4845 if (!rc)
4846 tpacpi_led_state_cache[led] = ledstatus;
4847
4848 return rc;
4849 }
4850
4851 static void led_set_status_worker(struct work_struct *work)
4852 {
4853 struct tpacpi_led_classdev *data =
4854 container_of(work, struct tpacpi_led_classdev, work);
4855
4856 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4857 led_set_status(data->led, data->new_state);
4858 }
4859
4860 static void led_sysfs_set(struct led_classdev *led_cdev,
4861 enum led_brightness brightness)
4862 {
4863 struct tpacpi_led_classdev *data = container_of(led_cdev,
4864 struct tpacpi_led_classdev, led_classdev);
4865
4866 if (brightness == LED_OFF)
4867 data->new_state = TPACPI_LED_OFF;
4868 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
4869 data->new_state = TPACPI_LED_ON;
4870 else
4871 data->new_state = TPACPI_LED_BLINK;
4872
4873 queue_work(tpacpi_wq, &data->work);
4874 }
4875
4876 static int led_sysfs_blink_set(struct led_classdev *led_cdev,
4877 unsigned long *delay_on, unsigned long *delay_off)
4878 {
4879 struct tpacpi_led_classdev *data = container_of(led_cdev,
4880 struct tpacpi_led_classdev, led_classdev);
4881
4882 /* Can we choose the flash rate? */
4883 if (*delay_on == 0 && *delay_off == 0) {
4884 /* yes. set them to the hardware blink rate (1 Hz) */
4885 *delay_on = 500; /* ms */
4886 *delay_off = 500; /* ms */
4887 } else if ((*delay_on != 500) || (*delay_off != 500))
4888 return -EINVAL;
4889
4890 data->new_state = TPACPI_LED_BLINK;
4891 queue_work(tpacpi_wq, &data->work);
4892
4893 return 0;
4894 }
4895
4896 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
4897 {
4898 int rc;
4899
4900 struct tpacpi_led_classdev *data = container_of(led_cdev,
4901 struct tpacpi_led_classdev, led_classdev);
4902
4903 rc = led_get_status(data->led);
4904
4905 if (rc == TPACPI_LED_OFF || rc < 0)
4906 rc = LED_OFF; /* no error handling in led class :( */
4907 else
4908 rc = LED_FULL;
4909
4910 return rc;
4911 }
4912
4913 static void led_exit(void)
4914 {
4915 unsigned int i;
4916
4917 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4918 if (tpacpi_leds[i].led_classdev.name)
4919 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
4920 }
4921
4922 kfree(tpacpi_leds);
4923 }
4924
4925 static int __init tpacpi_init_led(unsigned int led)
4926 {
4927 int rc;
4928
4929 tpacpi_leds[led].led = led;
4930
4931 tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
4932 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
4933 if (led_supported == TPACPI_LED_570)
4934 tpacpi_leds[led].led_classdev.brightness_get =
4935 &led_sysfs_get;
4936
4937 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led];
4938
4939 INIT_WORK(&tpacpi_leds[led].work, led_set_status_worker);
4940
4941 rc = led_classdev_register(&tpacpi_pdev->dev,
4942 &tpacpi_leds[led].led_classdev);
4943 if (rc < 0)
4944 tpacpi_leds[led].led_classdev.name = NULL;
4945
4946 return rc;
4947 }
4948
4949 static int __init led_init(struct ibm_init_struct *iibm)
4950 {
4951 unsigned int i;
4952 int rc;
4953
4954 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
4955
4956 TPACPI_ACPIHANDLE_INIT(led);
4957
4958 if (!led_handle)
4959 /* led not supported on R30, R31 */
4960 led_supported = TPACPI_LED_NONE;
4961 else if (strlencmp(led_path, "SLED") == 0)
4962 /* 570 */
4963 led_supported = TPACPI_LED_570;
4964 else if (strlencmp(led_path, "SYSL") == 0)
4965 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4966 led_supported = TPACPI_LED_OLD;
4967 else
4968 /* all others */
4969 led_supported = TPACPI_LED_NEW;
4970
4971 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
4972 str_supported(led_supported), led_supported);
4973
4974 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
4975 GFP_KERNEL);
4976 if (!tpacpi_leds) {
4977 printk(TPACPI_ERR "Out of memory for LED data\n");
4978 return -ENOMEM;
4979 }
4980
4981 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4982 if (!tpacpi_is_led_restricted(i)) {
4983 rc = tpacpi_init_led(i);
4984 if (rc < 0) {
4985 led_exit();
4986 return rc;
4987 }
4988 }
4989 }
4990
4991 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
4992 if (led_supported != TPACPI_LED_NONE)
4993 printk(TPACPI_NOTICE
4994 "warning: userspace override of important "
4995 "firmware LEDs is enabled\n");
4996 #endif
4997 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
4998 }
4999
5000 #define str_led_status(s) \
5001 ((s) == TPACPI_LED_OFF ? "off" : \
5002 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
5003
5004 static int led_read(char *p)
5005 {
5006 int len = 0;
5007
5008 if (!led_supported) {
5009 len += sprintf(p + len, "status:\t\tnot supported\n");
5010 return len;
5011 }
5012 len += sprintf(p + len, "status:\t\tsupported\n");
5013
5014 if (led_supported == TPACPI_LED_570) {
5015 /* 570 */
5016 int i, status;
5017 for (i = 0; i < 8; i++) {
5018 status = led_get_status(i);
5019 if (status < 0)
5020 return -EIO;
5021 len += sprintf(p + len, "%d:\t\t%s\n",
5022 i, str_led_status(status));
5023 }
5024 }
5025
5026 len += sprintf(p + len, "commands:\t"
5027 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
5028
5029 return len;
5030 }
5031
5032 static int led_write(char *buf)
5033 {
5034 char *cmd;
5035 int led, rc;
5036 enum led_status_t s;
5037
5038 if (!led_supported)
5039 return -ENODEV;
5040
5041 while ((cmd = next_cmd(&buf))) {
5042 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
5043 return -EINVAL;
5044
5045 if (strstr(cmd, "off")) {
5046 s = TPACPI_LED_OFF;
5047 } else if (strstr(cmd, "on")) {
5048 s = TPACPI_LED_ON;
5049 } else if (strstr(cmd, "blink")) {
5050 s = TPACPI_LED_BLINK;
5051 } else {
5052 return -EINVAL;
5053 }
5054
5055 rc = led_set_status(led, s);
5056 if (rc < 0)
5057 return rc;
5058 }
5059
5060 return 0;
5061 }
5062
5063 static struct ibm_struct led_driver_data = {
5064 .name = "led",
5065 .read = led_read,
5066 .write = led_write,
5067 .exit = led_exit,
5068 };
5069
5070 /*************************************************************************
5071 * Beep subdriver
5072 */
5073
5074 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
5075
5076 static int __init beep_init(struct ibm_init_struct *iibm)
5077 {
5078 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
5079
5080 TPACPI_ACPIHANDLE_INIT(beep);
5081
5082 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
5083 str_supported(beep_handle != NULL));
5084
5085 return (beep_handle)? 0 : 1;
5086 }
5087
5088 static int beep_read(char *p)
5089 {
5090 int len = 0;
5091
5092 if (!beep_handle)
5093 len += sprintf(p + len, "status:\t\tnot supported\n");
5094 else {
5095 len += sprintf(p + len, "status:\t\tsupported\n");
5096 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
5097 }
5098
5099 return len;
5100 }
5101
5102 static int beep_write(char *buf)
5103 {
5104 char *cmd;
5105 int beep_cmd;
5106
5107 if (!beep_handle)
5108 return -ENODEV;
5109
5110 while ((cmd = next_cmd(&buf))) {
5111 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
5112 beep_cmd >= 0 && beep_cmd <= 17) {
5113 /* beep_cmd set */
5114 } else
5115 return -EINVAL;
5116 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
5117 return -EIO;
5118 }
5119
5120 return 0;
5121 }
5122
5123 static struct ibm_struct beep_driver_data = {
5124 .name = "beep",
5125 .read = beep_read,
5126 .write = beep_write,
5127 };
5128
5129 /*************************************************************************
5130 * Thermal subdriver
5131 */
5132
5133 enum thermal_access_mode {
5134 TPACPI_THERMAL_NONE = 0, /* No thermal support */
5135 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
5136 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
5137 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
5138 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5139 };
5140
5141 enum { /* TPACPI_THERMAL_TPEC_* */
5142 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5143 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5144 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
5145 };
5146
5147 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5148 struct ibm_thermal_sensors_struct {
5149 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5150 };
5151
5152 static enum thermal_access_mode thermal_read_mode;
5153
5154 /* idx is zero-based */
5155 static int thermal_get_sensor(int idx, s32 *value)
5156 {
5157 int t;
5158 s8 tmp;
5159 char tmpi[5];
5160
5161 t = TP_EC_THERMAL_TMP0;
5162
5163 switch (thermal_read_mode) {
5164 #if TPACPI_MAX_THERMAL_SENSORS >= 16
5165 case TPACPI_THERMAL_TPEC_16:
5166 if (idx >= 8 && idx <= 15) {
5167 t = TP_EC_THERMAL_TMP8;
5168 idx -= 8;
5169 }
5170 /* fallthrough */
5171 #endif
5172 case TPACPI_THERMAL_TPEC_8:
5173 if (idx <= 7) {
5174 if (!acpi_ec_read(t + idx, &tmp))
5175 return -EIO;
5176 *value = tmp * 1000;
5177 return 0;
5178 }
5179 break;
5180
5181 case TPACPI_THERMAL_ACPI_UPDT:
5182 if (idx <= 7) {
5183 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5184 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5185 return -EIO;
5186 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5187 return -EIO;
5188 *value = (t - 2732) * 100;
5189 return 0;
5190 }
5191 break;
5192
5193 case TPACPI_THERMAL_ACPI_TMP07:
5194 if (idx <= 7) {
5195 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5196 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5197 return -EIO;
5198 if (t > 127 || t < -127)
5199 t = TP_EC_THERMAL_TMP_NA;
5200 *value = t * 1000;
5201 return 0;
5202 }
5203 break;
5204
5205 case TPACPI_THERMAL_NONE:
5206 default:
5207 return -ENOSYS;
5208 }
5209
5210 return -EINVAL;
5211 }
5212
5213 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5214 {
5215 int res, i;
5216 int n;
5217
5218 n = 8;
5219 i = 0;
5220
5221 if (!s)
5222 return -EINVAL;
5223
5224 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5225 n = 16;
5226
5227 for (i = 0 ; i < n; i++) {
5228 res = thermal_get_sensor(i, &s->temp[i]);
5229 if (res)
5230 return res;
5231 }
5232
5233 return n;
5234 }
5235
5236 /* sysfs temp##_input -------------------------------------------------- */
5237
5238 static ssize_t thermal_temp_input_show(struct device *dev,
5239 struct device_attribute *attr,
5240 char *buf)
5241 {
5242 struct sensor_device_attribute *sensor_attr =
5243 to_sensor_dev_attr(attr);
5244 int idx = sensor_attr->index;
5245 s32 value;
5246 int res;
5247
5248 res = thermal_get_sensor(idx, &value);
5249 if (res)
5250 return res;
5251 if (value == TP_EC_THERMAL_TMP_NA * 1000)
5252 return -ENXIO;
5253
5254 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5255 }
5256
5257 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5258 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5259 thermal_temp_input_show, NULL, _idxB)
5260
5261 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5262 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5263 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5264 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5265 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5266 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5267 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5268 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5269 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5270 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5271 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5272 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5273 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5274 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5275 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5276 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5277 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5278 };
5279
5280 #define THERMAL_ATTRS(X) \
5281 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5282
5283 static struct attribute *thermal_temp_input_attr[] = {
5284 THERMAL_ATTRS(8),
5285 THERMAL_ATTRS(9),
5286 THERMAL_ATTRS(10),
5287 THERMAL_ATTRS(11),
5288 THERMAL_ATTRS(12),
5289 THERMAL_ATTRS(13),
5290 THERMAL_ATTRS(14),
5291 THERMAL_ATTRS(15),
5292 THERMAL_ATTRS(0),
5293 THERMAL_ATTRS(1),
5294 THERMAL_ATTRS(2),
5295 THERMAL_ATTRS(3),
5296 THERMAL_ATTRS(4),
5297 THERMAL_ATTRS(5),
5298 THERMAL_ATTRS(6),
5299 THERMAL_ATTRS(7),
5300 NULL
5301 };
5302
5303 static const struct attribute_group thermal_temp_input16_group = {
5304 .attrs = thermal_temp_input_attr
5305 };
5306
5307 static const struct attribute_group thermal_temp_input8_group = {
5308 .attrs = &thermal_temp_input_attr[8]
5309 };
5310
5311 #undef THERMAL_SENSOR_ATTR_TEMP
5312 #undef THERMAL_ATTRS
5313
5314 /* --------------------------------------------------------------------- */
5315
5316 static int __init thermal_init(struct ibm_init_struct *iibm)
5317 {
5318 u8 t, ta1, ta2;
5319 int i;
5320 int acpi_tmp7;
5321 int res;
5322
5323 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5324
5325 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
5326
5327 if (thinkpad_id.ec_model) {
5328 /*
5329 * Direct EC access mode: sensors at registers
5330 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5331 * non-implemented, thermal sensors return 0x80 when
5332 * not available
5333 */
5334
5335 ta1 = ta2 = 0;
5336 for (i = 0; i < 8; i++) {
5337 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
5338 ta1 |= t;
5339 } else {
5340 ta1 = 0;
5341 break;
5342 }
5343 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
5344 ta2 |= t;
5345 } else {
5346 ta1 = 0;
5347 break;
5348 }
5349 }
5350 if (ta1 == 0) {
5351 /* This is sheer paranoia, but we handle it anyway */
5352 if (acpi_tmp7) {
5353 printk(TPACPI_ERR
5354 "ThinkPad ACPI EC access misbehaving, "
5355 "falling back to ACPI TMPx access "
5356 "mode\n");
5357 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
5358 } else {
5359 printk(TPACPI_ERR
5360 "ThinkPad ACPI EC access misbehaving, "
5361 "disabling thermal sensors access\n");
5362 thermal_read_mode = TPACPI_THERMAL_NONE;
5363 }
5364 } else {
5365 thermal_read_mode =
5366 (ta2 != 0) ?
5367 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
5368 }
5369 } else if (acpi_tmp7) {
5370 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
5371 /* 600e/x, 770e, 770x */
5372 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
5373 } else {
5374 /* Standard ACPI TMPx access, max 8 sensors */
5375 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
5376 }
5377 } else {
5378 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5379 thermal_read_mode = TPACPI_THERMAL_NONE;
5380 }
5381
5382 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5383 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5384 thermal_read_mode);
5385
5386 switch (thermal_read_mode) {
5387 case TPACPI_THERMAL_TPEC_16:
5388 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5389 &thermal_temp_input16_group);
5390 if (res)
5391 return res;
5392 break;
5393 case TPACPI_THERMAL_TPEC_8:
5394 case TPACPI_THERMAL_ACPI_TMP07:
5395 case TPACPI_THERMAL_ACPI_UPDT:
5396 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5397 &thermal_temp_input8_group);
5398 if (res)
5399 return res;
5400 break;
5401 case TPACPI_THERMAL_NONE:
5402 default:
5403 return 1;
5404 }
5405
5406 return 0;
5407 }
5408
5409 static void thermal_exit(void)
5410 {
5411 switch (thermal_read_mode) {
5412 case TPACPI_THERMAL_TPEC_16:
5413 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
5414 &thermal_temp_input16_group);
5415 break;
5416 case TPACPI_THERMAL_TPEC_8:
5417 case TPACPI_THERMAL_ACPI_TMP07:
5418 case TPACPI_THERMAL_ACPI_UPDT:
5419 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
5420 &thermal_temp_input16_group);
5421 break;
5422 case TPACPI_THERMAL_NONE:
5423 default:
5424 break;
5425 }
5426 }
5427
5428 static int thermal_read(char *p)
5429 {
5430 int len = 0;
5431 int n, i;
5432 struct ibm_thermal_sensors_struct t;
5433
5434 n = thermal_get_sensors(&t);
5435 if (unlikely(n < 0))
5436 return n;
5437
5438 len += sprintf(p + len, "temperatures:\t");
5439
5440 if (n > 0) {
5441 for (i = 0; i < (n - 1); i++)
5442 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
5443 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
5444 } else
5445 len += sprintf(p + len, "not supported\n");
5446
5447 return len;
5448 }
5449
5450 static struct ibm_struct thermal_driver_data = {
5451 .name = "thermal",
5452 .read = thermal_read,
5453 .exit = thermal_exit,
5454 };
5455
5456 /*************************************************************************
5457 * EC Dump subdriver
5458 */
5459
5460 static u8 ecdump_regs[256];
5461
5462 static int ecdump_read(char *p)
5463 {
5464 int len = 0;
5465 int i, j;
5466 u8 v;
5467
5468 len += sprintf(p + len, "EC "
5469 " +00 +01 +02 +03 +04 +05 +06 +07"
5470 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5471 for (i = 0; i < 256; i += 16) {
5472 len += sprintf(p + len, "EC 0x%02x:", i);
5473 for (j = 0; j < 16; j++) {
5474 if (!acpi_ec_read(i + j, &v))
5475 break;
5476 if (v != ecdump_regs[i + j])
5477 len += sprintf(p + len, " *%02x", v);
5478 else
5479 len += sprintf(p + len, " %02x", v);
5480 ecdump_regs[i + j] = v;
5481 }
5482 len += sprintf(p + len, "\n");
5483 if (j != 16)
5484 break;
5485 }
5486
5487 /* These are way too dangerous to advertise openly... */
5488 #if 0
5489 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
5490 " (<offset> is 00-ff, <value> is 00-ff)\n");
5491 len += sprintf(p + len, "commands:\t0x<offset> <value> "
5492 " (<offset> is 00-ff, <value> is 0-255)\n");
5493 #endif
5494 return len;
5495 }
5496
5497 static int ecdump_write(char *buf)
5498 {
5499 char *cmd;
5500 int i, v;
5501
5502 while ((cmd = next_cmd(&buf))) {
5503 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5504 /* i and v set */
5505 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5506 /* i and v set */
5507 } else
5508 return -EINVAL;
5509 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5510 if (!acpi_ec_write(i, v))
5511 return -EIO;
5512 } else
5513 return -EINVAL;
5514 }
5515
5516 return 0;
5517 }
5518
5519 static struct ibm_struct ecdump_driver_data = {
5520 .name = "ecdump",
5521 .read = ecdump_read,
5522 .write = ecdump_write,
5523 .flags.experimental = 1,
5524 };
5525
5526 /*************************************************************************
5527 * Backlight/brightness subdriver
5528 */
5529
5530 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5531
5532 /*
5533 * ThinkPads can read brightness from two places: EC HBRV (0x31), or
5534 * CMOS NVRAM byte 0x5E, bits 0-3.
5535 *
5536 * EC HBRV (0x31) has the following layout
5537 * Bit 7: unknown function
5538 * Bit 6: unknown function
5539 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5540 * Bit 4: must be set to zero to avoid problems
5541 * Bit 3-0: backlight brightness level
5542 *
5543 * brightness_get_raw returns status data in the HBRV layout
5544 */
5545
5546 enum {
5547 TP_EC_BACKLIGHT = 0x31,
5548
5549 /* TP_EC_BACKLIGHT bitmasks */
5550 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5551 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5552 TP_EC_BACKLIGHT_MAPSW = 0x20,
5553 };
5554
5555 enum tpacpi_brightness_access_mode {
5556 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */
5557 TPACPI_BRGHT_MODE_EC, /* EC control */
5558 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */
5559 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */
5560 TPACPI_BRGHT_MODE_MAX
5561 };
5562
5563 static struct backlight_device *ibm_backlight_device;
5564
5565 static enum tpacpi_brightness_access_mode brightness_mode =
5566 TPACPI_BRGHT_MODE_MAX;
5567
5568 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5569
5570 static struct mutex brightness_mutex;
5571
5572 /* NVRAM brightness access,
5573 * call with brightness_mutex held! */
5574 static unsigned int tpacpi_brightness_nvram_get(void)
5575 {
5576 u8 lnvram;
5577
5578 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5579 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5580 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
5581 lnvram &= (tp_features.bright_16levels) ? 0x0f : 0x07;
5582
5583 return lnvram;
5584 }
5585
5586 static void tpacpi_brightness_checkpoint_nvram(void)
5587 {
5588 u8 lec = 0;
5589 u8 b_nvram;
5590
5591 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM)
5592 return;
5593
5594 vdbg_printk(TPACPI_DBG_BRGHT,
5595 "trying to checkpoint backlight level to NVRAM...\n");
5596
5597 if (mutex_lock_killable(&brightness_mutex) < 0)
5598 return;
5599
5600 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5601 goto unlock;
5602 lec &= TP_EC_BACKLIGHT_LVLMSK;
5603 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
5604
5605 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5606 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) {
5607 /* NVRAM needs update */
5608 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS <<
5609 TP_NVRAM_POS_LEVEL_BRIGHTNESS);
5610 b_nvram |= lec;
5611 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS);
5612 dbg_printk(TPACPI_DBG_BRGHT,
5613 "updated NVRAM backlight level to %u (0x%02x)\n",
5614 (unsigned int) lec, (unsigned int) b_nvram);
5615 } else
5616 vdbg_printk(TPACPI_DBG_BRGHT,
5617 "NVRAM backlight level already is %u (0x%02x)\n",
5618 (unsigned int) lec, (unsigned int) b_nvram);
5619
5620 unlock:
5621 mutex_unlock(&brightness_mutex);
5622 }
5623
5624
5625 /* call with brightness_mutex held! */
5626 static int tpacpi_brightness_get_raw(int *status)
5627 {
5628 u8 lec = 0;
5629
5630 switch (brightness_mode) {
5631 case TPACPI_BRGHT_MODE_UCMS_STEP:
5632 *status = tpacpi_brightness_nvram_get();
5633 return 0;
5634 case TPACPI_BRGHT_MODE_EC:
5635 case TPACPI_BRGHT_MODE_ECNVRAM:
5636 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5637 return -EIO;
5638 *status = lec;
5639 return 0;
5640 default:
5641 return -ENXIO;
5642 }
5643 }
5644
5645 /* call with brightness_mutex held! */
5646 /* do NOT call with illegal backlight level value */
5647 static int tpacpi_brightness_set_ec(unsigned int value)
5648 {
5649 u8 lec = 0;
5650
5651 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec)))
5652 return -EIO;
5653
5654 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT,
5655 (lec & TP_EC_BACKLIGHT_CMDMSK) |
5656 (value & TP_EC_BACKLIGHT_LVLMSK))))
5657 return -EIO;
5658
5659 return 0;
5660 }
5661
5662 /* call with brightness_mutex held! */
5663 static int tpacpi_brightness_set_ucmsstep(unsigned int value)
5664 {
5665 int cmos_cmd, inc;
5666 unsigned int current_value, i;
5667
5668 current_value = tpacpi_brightness_nvram_get();
5669
5670 if (value == current_value)
5671 return 0;
5672
5673 cmos_cmd = (value > current_value) ?
5674 TP_CMOS_BRIGHTNESS_UP :
5675 TP_CMOS_BRIGHTNESS_DOWN;
5676 inc = (value > current_value) ? 1 : -1;
5677
5678 for (i = current_value; i != value; i += inc)
5679 if (issue_thinkpad_cmos_command(cmos_cmd))
5680 return -EIO;
5681
5682 return 0;
5683 }
5684
5685 /* May return EINTR which can always be mapped to ERESTARTSYS */
5686 static int brightness_set(unsigned int value)
5687 {
5688 int res;
5689
5690 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
5691 value < 0)
5692 return -EINVAL;
5693
5694 vdbg_printk(TPACPI_DBG_BRGHT,
5695 "set backlight level to %d\n", value);
5696
5697 res = mutex_lock_killable(&brightness_mutex);
5698 if (res < 0)
5699 return res;
5700
5701 switch (brightness_mode) {
5702 case TPACPI_BRGHT_MODE_EC:
5703 case TPACPI_BRGHT_MODE_ECNVRAM:
5704 res = tpacpi_brightness_set_ec(value);
5705 break;
5706 case TPACPI_BRGHT_MODE_UCMS_STEP:
5707 res = tpacpi_brightness_set_ucmsstep(value);
5708 break;
5709 default:
5710 res = -ENXIO;
5711 }
5712
5713 mutex_unlock(&brightness_mutex);
5714 return res;
5715 }
5716
5717 /* sysfs backlight class ----------------------------------------------- */
5718
5719 static int brightness_update_status(struct backlight_device *bd)
5720 {
5721 unsigned int level =
5722 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
5723 bd->props.power == FB_BLANK_UNBLANK) ?
5724 bd->props.brightness : 0;
5725
5726 dbg_printk(TPACPI_DBG_BRGHT,
5727 "backlight: attempt to set level to %d\n",
5728 level);
5729
5730 /* it is the backlight class's job (caller) to handle
5731 * EINTR and other errors properly */
5732 return brightness_set(level);
5733 }
5734
5735 static int brightness_get(struct backlight_device *bd)
5736 {
5737 int status, res;
5738
5739 res = mutex_lock_killable(&brightness_mutex);
5740 if (res < 0)
5741 return 0;
5742
5743 res = tpacpi_brightness_get_raw(&status);
5744
5745 mutex_unlock(&brightness_mutex);
5746
5747 if (res < 0)
5748 return 0;
5749
5750 return status & TP_EC_BACKLIGHT_LVLMSK;
5751 }
5752
5753 static struct backlight_ops ibm_backlight_data = {
5754 .get_brightness = brightness_get,
5755 .update_status = brightness_update_status,
5756 };
5757
5758 /* --------------------------------------------------------------------- */
5759
5760 static int __init brightness_init(struct ibm_init_struct *iibm)
5761 {
5762 int b;
5763
5764 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
5765
5766 mutex_init(&brightness_mutex);
5767
5768 /*
5769 * We always attempt to detect acpi support, so as to switch
5770 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5771 * going to publish a backlight interface
5772 */
5773 b = tpacpi_check_std_acpi_brightness_support();
5774 if (b > 0) {
5775
5776 if (acpi_video_backlight_support()) {
5777 if (brightness_enable > 1) {
5778 printk(TPACPI_NOTICE
5779 "Standard ACPI backlight interface "
5780 "available, not loading native one.\n");
5781 return 1;
5782 } else if (brightness_enable == 1) {
5783 printk(TPACPI_NOTICE
5784 "Backlight control force enabled, even if standard "
5785 "ACPI backlight interface is available\n");
5786 }
5787 } else {
5788 if (brightness_enable > 1) {
5789 printk(TPACPI_NOTICE
5790 "Standard ACPI backlight interface not "
5791 "available, thinkpad_acpi native "
5792 "brightness control enabled\n");
5793 }
5794 }
5795 }
5796
5797 if (!brightness_enable) {
5798 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5799 "brightness support disabled by "
5800 "module parameter\n");
5801 return 1;
5802 }
5803
5804 if (b > 16) {
5805 printk(TPACPI_ERR
5806 "Unsupported brightness interface, "
5807 "please contact %s\n", TPACPI_MAIL);
5808 return 1;
5809 }
5810 if (b == 16)
5811 tp_features.bright_16levels = 1;
5812
5813 /*
5814 * Check for module parameter bogosity, note that we
5815 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be
5816 * able to detect "unspecified"
5817 */
5818 if (brightness_mode > TPACPI_BRGHT_MODE_MAX)
5819 return -EINVAL;
5820
5821 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */
5822 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO ||
5823 brightness_mode == TPACPI_BRGHT_MODE_MAX) {
5824 if (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) {
5825 /*
5826 * IBM models that define HBRV probably have
5827 * EC-based backlight level control
5828 */
5829 if (acpi_evalf(ec_handle, NULL, "HBRV", "qd"))
5830 /* T40-T43, R50-R52, R50e, R51e, X31-X41 */
5831 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM;
5832 else
5833 /* all other IBM ThinkPads */
5834 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
5835 } else
5836 /* All Lenovo ThinkPads */
5837 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP;
5838
5839 dbg_printk(TPACPI_DBG_BRGHT,
5840 "selected brightness_mode=%d\n",
5841 brightness_mode);
5842 }
5843
5844 if (tpacpi_brightness_get_raw(&b) < 0)
5845 return 1;
5846
5847 if (tp_features.bright_16levels)
5848 printk(TPACPI_INFO
5849 "detected a 16-level brightness capable ThinkPad\n");
5850
5851 ibm_backlight_device = backlight_device_register(
5852 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
5853 &ibm_backlight_data);
5854 if (IS_ERR(ibm_backlight_device)) {
5855 printk(TPACPI_ERR "Could not register backlight device\n");
5856 return PTR_ERR(ibm_backlight_device);
5857 }
5858 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
5859 "brightness is supported\n");
5860
5861 ibm_backlight_device->props.max_brightness =
5862 (tp_features.bright_16levels)? 15 : 7;
5863 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
5864 backlight_update_status(ibm_backlight_device);
5865
5866 return 0;
5867 }
5868
5869 static void brightness_suspend(pm_message_t state)
5870 {
5871 tpacpi_brightness_checkpoint_nvram();
5872 }
5873
5874 static void brightness_shutdown(void)
5875 {
5876 tpacpi_brightness_checkpoint_nvram();
5877 }
5878
5879 static void brightness_exit(void)
5880 {
5881 if (ibm_backlight_device) {
5882 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT,
5883 "calling backlight_device_unregister()\n");
5884 backlight_device_unregister(ibm_backlight_device);
5885 }
5886
5887 tpacpi_brightness_checkpoint_nvram();
5888 }
5889
5890 static int brightness_read(char *p)
5891 {
5892 int len = 0;
5893 int level;
5894
5895 level = brightness_get(NULL);
5896 if (level < 0) {
5897 len += sprintf(p + len, "level:\t\tunreadable\n");
5898 } else {
5899 len += sprintf(p + len, "level:\t\t%d\n", level);
5900 len += sprintf(p + len, "commands:\tup, down\n");
5901 len += sprintf(p + len, "commands:\tlevel <level>"
5902 " (<level> is 0-%d)\n",
5903 (tp_features.bright_16levels) ? 15 : 7);
5904 }
5905
5906 return len;
5907 }
5908
5909 static int brightness_write(char *buf)
5910 {
5911 int level;
5912 int rc;
5913 char *cmd;
5914 int max_level = (tp_features.bright_16levels) ? 15 : 7;
5915
5916 level = brightness_get(NULL);
5917 if (level < 0)
5918 return level;
5919
5920 while ((cmd = next_cmd(&buf))) {
5921 if (strlencmp(cmd, "up") == 0) {
5922 if (level < max_level)
5923 level++;
5924 } else if (strlencmp(cmd, "down") == 0) {
5925 if (level > 0)
5926 level--;
5927 } else if (sscanf(cmd, "level %d", &level) == 1 &&
5928 level >= 0 && level <= max_level) {
5929 /* new level set */
5930 } else
5931 return -EINVAL;
5932 }
5933
5934 tpacpi_disclose_usertask("procfs brightness",
5935 "set level to %d\n", level);
5936
5937 /*
5938 * Now we know what the final level should be, so we try to set it.
5939 * Doing it this way makes the syscall restartable in case of EINTR
5940 */
5941 rc = brightness_set(level);
5942 return (rc == -EINTR)? ERESTARTSYS : rc;
5943 }
5944
5945 static struct ibm_struct brightness_driver_data = {
5946 .name = "brightness",
5947 .read = brightness_read,
5948 .write = brightness_write,
5949 .exit = brightness_exit,
5950 .suspend = brightness_suspend,
5951 .shutdown = brightness_shutdown,
5952 };
5953
5954 /*************************************************************************
5955 * Volume subdriver
5956 */
5957
5958 static int volume_offset = 0x30;
5959
5960 static int volume_read(char *p)
5961 {
5962 int len = 0;
5963 u8 level;
5964
5965 if (!acpi_ec_read(volume_offset, &level)) {
5966 len += sprintf(p + len, "level:\t\tunreadable\n");
5967 } else {
5968 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
5969 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
5970 len += sprintf(p + len, "commands:\tup, down, mute\n");
5971 len += sprintf(p + len, "commands:\tlevel <level>"
5972 " (<level> is 0-15)\n");
5973 }
5974
5975 return len;
5976 }
5977
5978 static int volume_write(char *buf)
5979 {
5980 int cmos_cmd, inc, i;
5981 u8 level, mute;
5982 int new_level, new_mute;
5983 char *cmd;
5984
5985 while ((cmd = next_cmd(&buf))) {
5986 if (!acpi_ec_read(volume_offset, &level))
5987 return -EIO;
5988 new_mute = mute = level & 0x40;
5989 new_level = level = level & 0xf;
5990
5991 if (strlencmp(cmd, "up") == 0) {
5992 if (mute)
5993 new_mute = 0;
5994 else
5995 new_level = level == 15 ? 15 : level + 1;
5996 } else if (strlencmp(cmd, "down") == 0) {
5997 if (mute)
5998 new_mute = 0;
5999 else
6000 new_level = level == 0 ? 0 : level - 1;
6001 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
6002 new_level >= 0 && new_level <= 15) {
6003 /* new_level set */
6004 } else if (strlencmp(cmd, "mute") == 0) {
6005 new_mute = 0x40;
6006 } else
6007 return -EINVAL;
6008
6009 if (new_level != level) {
6010 /* mute doesn't change */
6011
6012 cmos_cmd = (new_level > level) ?
6013 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
6014 inc = new_level > level ? 1 : -1;
6015
6016 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
6017 !acpi_ec_write(volume_offset, level)))
6018 return -EIO;
6019
6020 for (i = level; i != new_level; i += inc)
6021 if (issue_thinkpad_cmos_command(cmos_cmd) ||
6022 !acpi_ec_write(volume_offset, i + inc))
6023 return -EIO;
6024
6025 if (mute &&
6026 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
6027 !acpi_ec_write(volume_offset, new_level + mute))) {
6028 return -EIO;
6029 }
6030 }
6031
6032 if (new_mute != mute) {
6033 /* level doesn't change */
6034
6035 cmos_cmd = (new_mute) ?
6036 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
6037
6038 if (issue_thinkpad_cmos_command(cmos_cmd) ||
6039 !acpi_ec_write(volume_offset, level + new_mute))
6040 return -EIO;
6041 }
6042 }
6043
6044 return 0;
6045 }
6046
6047 static struct ibm_struct volume_driver_data = {
6048 .name = "volume",
6049 .read = volume_read,
6050 .write = volume_write,
6051 };
6052
6053 /*************************************************************************
6054 * Fan subdriver
6055 */
6056
6057 /*
6058 * FAN ACCESS MODES
6059 *
6060 * TPACPI_FAN_RD_ACPI_GFAN:
6061 * ACPI GFAN method: returns fan level
6062 *
6063 * see TPACPI_FAN_WR_ACPI_SFAN
6064 * EC 0x2f (HFSP) not available if GFAN exists
6065 *
6066 * TPACPI_FAN_WR_ACPI_SFAN:
6067 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
6068 *
6069 * EC 0x2f (HFSP) might be available *for reading*, but do not use
6070 * it for writing.
6071 *
6072 * TPACPI_FAN_WR_TPEC:
6073 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
6074 * Supported on almost all ThinkPads
6075 *
6076 * Fan speed changes of any sort (including those caused by the
6077 * disengaged mode) are usually done slowly by the firmware as the
6078 * maximum ammount of fan duty cycle change per second seems to be
6079 * limited.
6080 *
6081 * Reading is not available if GFAN exists.
6082 * Writing is not available if SFAN exists.
6083 *
6084 * Bits
6085 * 7 automatic mode engaged;
6086 * (default operation mode of the ThinkPad)
6087 * fan level is ignored in this mode.
6088 * 6 full speed mode (takes precedence over bit 7);
6089 * not available on all thinkpads. May disable
6090 * the tachometer while the fan controller ramps up
6091 * the speed (which can take up to a few *minutes*).
6092 * Speeds up fan to 100% duty-cycle, which is far above
6093 * the standard RPM levels. It is not impossible that
6094 * it could cause hardware damage.
6095 * 5-3 unused in some models. Extra bits for fan level
6096 * in others, but still useless as all values above
6097 * 7 map to the same speed as level 7 in these models.
6098 * 2-0 fan level (0..7 usually)
6099 * 0x00 = stop
6100 * 0x07 = max (set when temperatures critical)
6101 * Some ThinkPads may have other levels, see
6102 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
6103 *
6104 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
6105 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
6106 * does so, its initial value is meaningless (0x07).
6107 *
6108 * For firmware bugs, refer to:
6109 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6110 *
6111 * ----
6112 *
6113 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
6114 * Main fan tachometer reading (in RPM)
6115 *
6116 * This register is present on all ThinkPads with a new-style EC, and
6117 * it is known not to be present on the A21m/e, and T22, as there is
6118 * something else in offset 0x84 according to the ACPI DSDT. Other
6119 * ThinkPads from this same time period (and earlier) probably lack the
6120 * tachometer as well.
6121 *
6122 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
6123 * was never fixed by IBM to report the EC firmware version string
6124 * probably support the tachometer (like the early X models), so
6125 * detecting it is quite hard. We need more data to know for sure.
6126 *
6127 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
6128 * might result.
6129 *
6130 * FIRMWARE BUG: may go stale while the EC is switching to full speed
6131 * mode.
6132 *
6133 * For firmware bugs, refer to:
6134 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
6135 *
6136 * TPACPI_FAN_WR_ACPI_FANS:
6137 * ThinkPad X31, X40, X41. Not available in the X60.
6138 *
6139 * FANS ACPI handle: takes three arguments: low speed, medium speed,
6140 * high speed. ACPI DSDT seems to map these three speeds to levels
6141 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
6142 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
6143 *
6144 * The speeds are stored on handles
6145 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
6146 *
6147 * There are three default speed sets, acessible as handles:
6148 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
6149 *
6150 * ACPI DSDT switches which set is in use depending on various
6151 * factors.
6152 *
6153 * TPACPI_FAN_WR_TPEC is also available and should be used to
6154 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
6155 * but the ACPI tables just mention level 7.
6156 */
6157
6158 enum { /* Fan control constants */
6159 fan_status_offset = 0x2f, /* EC register 0x2f */
6160 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
6161 * 0x84 must be read before 0x85 */
6162
6163 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
6164 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
6165
6166 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
6167 };
6168
6169 enum fan_status_access_mode {
6170 TPACPI_FAN_NONE = 0, /* No fan status or control */
6171 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
6172 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
6173 };
6174
6175 enum fan_control_access_mode {
6176 TPACPI_FAN_WR_NONE = 0, /* No fan control */
6177 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
6178 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
6179 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
6180 };
6181
6182 enum fan_control_commands {
6183 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
6184 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
6185 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
6186 * and also watchdog cmd */
6187 };
6188
6189 static int fan_control_allowed;
6190
6191 static enum fan_status_access_mode fan_status_access_mode;
6192 static enum fan_control_access_mode fan_control_access_mode;
6193 static enum fan_control_commands fan_control_commands;
6194
6195 static u8 fan_control_initial_status;
6196 static u8 fan_control_desired_level;
6197 static u8 fan_control_resume_level;
6198 static int fan_watchdog_maxinterval;
6199
6200 static struct mutex fan_mutex;
6201
6202 static void fan_watchdog_fire(struct work_struct *ignored);
6203 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
6204
6205 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
6206 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
6207 "\\FSPD", /* 600e/x, 770e, 770x */
6208 ); /* all others */
6209 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
6210 "JFNS", /* 770x-JL */
6211 ); /* all others */
6212
6213 /*
6214 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
6215 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
6216 * be in auto mode (0x80).
6217 *
6218 * This is corrected by any write to HFSP either by the driver, or
6219 * by the firmware.
6220 *
6221 * We assume 0x07 really means auto mode while this quirk is active,
6222 * as this is far more likely than the ThinkPad being in level 7,
6223 * which is only used by the firmware during thermal emergencies.
6224 */
6225
6226 static void fan_quirk1_detect(void)
6227 {
6228 /* In some ThinkPads, neither the EC nor the ACPI
6229 * DSDT initialize the HFSP register, and it ends up
6230 * being initially set to 0x07 when it *could* be
6231 * either 0x07 or 0x80.
6232 *
6233 * Enable for TP-1Y (T43), TP-78 (R51e),
6234 * TP-76 (R52), TP-70 (T43, R52), which are known
6235 * to be buggy. */
6236 if (fan_control_initial_status == 0x07) {
6237 switch (thinkpad_id.ec_model) {
6238 case 0x5931: /* TP-1Y */
6239 case 0x3837: /* TP-78 */
6240 case 0x3637: /* TP-76 */
6241 case 0x3037: /* TP-70 */
6242 printk(TPACPI_NOTICE
6243 "fan_init: initial fan status is unknown, "
6244 "assuming it is in auto mode\n");
6245 tp_features.fan_ctrl_status_undef = 1;
6246 ;;
6247 }
6248 }
6249 }
6250
6251 static void fan_quirk1_handle(u8 *fan_status)
6252 {
6253 if (unlikely(tp_features.fan_ctrl_status_undef)) {
6254 if (*fan_status != fan_control_initial_status) {
6255 /* something changed the HFSP regisnter since
6256 * driver init time, so it is not undefined
6257 * anymore */
6258 tp_features.fan_ctrl_status_undef = 0;
6259 } else {
6260 /* Return most likely status. In fact, it
6261 * might be the only possible status */
6262 *fan_status = TP_EC_FAN_AUTO;
6263 }
6264 }
6265 }
6266
6267 /*
6268 * Call with fan_mutex held
6269 */
6270 static void fan_update_desired_level(u8 status)
6271 {
6272 if ((status &
6273 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6274 if (status > 7)
6275 fan_control_desired_level = 7;
6276 else
6277 fan_control_desired_level = status;
6278 }
6279 }
6280
6281 static int fan_get_status(u8 *status)
6282 {
6283 u8 s;
6284
6285 /* TODO:
6286 * Add TPACPI_FAN_RD_ACPI_FANS ? */
6287
6288 switch (fan_status_access_mode) {
6289 case TPACPI_FAN_RD_ACPI_GFAN:
6290 /* 570, 600e/x, 770e, 770x */
6291
6292 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
6293 return -EIO;
6294
6295 if (likely(status))
6296 *status = s & 0x07;
6297
6298 break;
6299
6300 case TPACPI_FAN_RD_TPEC:
6301 /* all except 570, 600e/x, 770e, 770x */
6302 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
6303 return -EIO;
6304
6305 if (likely(status)) {
6306 *status = s;
6307 fan_quirk1_handle(status);
6308 }
6309
6310 break;
6311
6312 default:
6313 return -ENXIO;
6314 }
6315
6316 return 0;
6317 }
6318
6319 static int fan_get_status_safe(u8 *status)
6320 {
6321 int rc;
6322 u8 s;
6323
6324 if (mutex_lock_killable(&fan_mutex))
6325 return -ERESTARTSYS;
6326 rc = fan_get_status(&s);
6327 if (!rc)
6328 fan_update_desired_level(s);
6329 mutex_unlock(&fan_mutex);
6330
6331 if (status)
6332 *status = s;
6333
6334 return rc;
6335 }
6336
6337 static int fan_get_speed(unsigned int *speed)
6338 {
6339 u8 hi, lo;
6340
6341 switch (fan_status_access_mode) {
6342 case TPACPI_FAN_RD_TPEC:
6343 /* all except 570, 600e/x, 770e, 770x */
6344 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
6345 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
6346 return -EIO;
6347
6348 if (likely(speed))
6349 *speed = (hi << 8) | lo;
6350
6351 break;
6352
6353 default:
6354 return -ENXIO;
6355 }
6356
6357 return 0;
6358 }
6359
6360 static int fan_set_level(int level)
6361 {
6362 if (!fan_control_allowed)
6363 return -EPERM;
6364
6365 switch (fan_control_access_mode) {
6366 case TPACPI_FAN_WR_ACPI_SFAN:
6367 if (level >= 0 && level <= 7) {
6368 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
6369 return -EIO;
6370 } else
6371 return -EINVAL;
6372 break;
6373
6374 case TPACPI_FAN_WR_ACPI_FANS:
6375 case TPACPI_FAN_WR_TPEC:
6376 if (!(level & TP_EC_FAN_AUTO) &&
6377 !(level & TP_EC_FAN_FULLSPEED) &&
6378 ((level < 0) || (level > 7)))
6379 return -EINVAL;
6380
6381 /* safety net should the EC not support AUTO
6382 * or FULLSPEED mode bits and just ignore them */
6383 if (level & TP_EC_FAN_FULLSPEED)
6384 level |= 7; /* safety min speed 7 */
6385 else if (level & TP_EC_FAN_AUTO)
6386 level |= 4; /* safety min speed 4 */
6387
6388 if (!acpi_ec_write(fan_status_offset, level))
6389 return -EIO;
6390 else
6391 tp_features.fan_ctrl_status_undef = 0;
6392 break;
6393
6394 default:
6395 return -ENXIO;
6396 }
6397
6398 vdbg_printk(TPACPI_DBG_FAN,
6399 "fan control: set fan control register to 0x%02x\n", level);
6400 return 0;
6401 }
6402
6403 static int fan_set_level_safe(int level)
6404 {
6405 int rc;
6406
6407 if (!fan_control_allowed)
6408 return -EPERM;
6409
6410 if (mutex_lock_killable(&fan_mutex))
6411 return -ERESTARTSYS;
6412
6413 if (level == TPACPI_FAN_LAST_LEVEL)
6414 level = fan_control_desired_level;
6415
6416 rc = fan_set_level(level);
6417 if (!rc)
6418 fan_update_desired_level(level);
6419
6420 mutex_unlock(&fan_mutex);
6421 return rc;
6422 }
6423
6424 static int fan_set_enable(void)
6425 {
6426 u8 s;
6427 int rc;
6428
6429 if (!fan_control_allowed)
6430 return -EPERM;
6431
6432 if (mutex_lock_killable(&fan_mutex))
6433 return -ERESTARTSYS;
6434
6435 switch (fan_control_access_mode) {
6436 case TPACPI_FAN_WR_ACPI_FANS:
6437 case TPACPI_FAN_WR_TPEC:
6438 rc = fan_get_status(&s);
6439 if (rc < 0)
6440 break;
6441
6442 /* Don't go out of emergency fan mode */
6443 if (s != 7) {
6444 s &= 0x07;
6445 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
6446 }
6447
6448 if (!acpi_ec_write(fan_status_offset, s))
6449 rc = -EIO;
6450 else {
6451 tp_features.fan_ctrl_status_undef = 0;
6452 rc = 0;
6453 }
6454 break;
6455
6456 case TPACPI_FAN_WR_ACPI_SFAN:
6457 rc = fan_get_status(&s);
6458 if (rc < 0)
6459 break;
6460
6461 s &= 0x07;
6462
6463 /* Set fan to at least level 4 */
6464 s |= 4;
6465
6466 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
6467 rc = -EIO;
6468 else
6469 rc = 0;
6470 break;
6471
6472 default:
6473 rc = -ENXIO;
6474 }
6475
6476 mutex_unlock(&fan_mutex);
6477
6478 if (!rc)
6479 vdbg_printk(TPACPI_DBG_FAN,
6480 "fan control: set fan control register to 0x%02x\n",
6481 s);
6482 return rc;
6483 }
6484
6485 static int fan_set_disable(void)
6486 {
6487 int rc;
6488
6489 if (!fan_control_allowed)
6490 return -EPERM;
6491
6492 if (mutex_lock_killable(&fan_mutex))
6493 return -ERESTARTSYS;
6494
6495 rc = 0;
6496 switch (fan_control_access_mode) {
6497 case TPACPI_FAN_WR_ACPI_FANS:
6498 case TPACPI_FAN_WR_TPEC:
6499 if (!acpi_ec_write(fan_status_offset, 0x00))
6500 rc = -EIO;
6501 else {
6502 fan_control_desired_level = 0;
6503 tp_features.fan_ctrl_status_undef = 0;
6504 }
6505 break;
6506
6507 case TPACPI_FAN_WR_ACPI_SFAN:
6508 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
6509 rc = -EIO;
6510 else
6511 fan_control_desired_level = 0;
6512 break;
6513
6514 default:
6515 rc = -ENXIO;
6516 }
6517
6518 if (!rc)
6519 vdbg_printk(TPACPI_DBG_FAN,
6520 "fan control: set fan control register to 0\n");
6521
6522 mutex_unlock(&fan_mutex);
6523 return rc;
6524 }
6525
6526 static int fan_set_speed(int speed)
6527 {
6528 int rc;
6529
6530 if (!fan_control_allowed)
6531 return -EPERM;
6532
6533 if (mutex_lock_killable(&fan_mutex))
6534 return -ERESTARTSYS;
6535
6536 rc = 0;
6537 switch (fan_control_access_mode) {
6538 case TPACPI_FAN_WR_ACPI_FANS:
6539 if (speed >= 0 && speed <= 65535) {
6540 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
6541 speed, speed, speed))
6542 rc = -EIO;
6543 } else
6544 rc = -EINVAL;
6545 break;
6546
6547 default:
6548 rc = -ENXIO;
6549 }
6550
6551 mutex_unlock(&fan_mutex);
6552 return rc;
6553 }
6554
6555 static void fan_watchdog_reset(void)
6556 {
6557 static int fan_watchdog_active;
6558
6559 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
6560 return;
6561
6562 if (fan_watchdog_active)
6563 cancel_delayed_work(&fan_watchdog_task);
6564
6565 if (fan_watchdog_maxinterval > 0 &&
6566 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
6567 fan_watchdog_active = 1;
6568 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
6569 msecs_to_jiffies(fan_watchdog_maxinterval
6570 * 1000))) {
6571 printk(TPACPI_ERR
6572 "failed to queue the fan watchdog, "
6573 "watchdog will not trigger\n");
6574 }
6575 } else
6576 fan_watchdog_active = 0;
6577 }
6578
6579 static void fan_watchdog_fire(struct work_struct *ignored)
6580 {
6581 int rc;
6582
6583 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
6584 return;
6585
6586 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
6587 rc = fan_set_enable();
6588 if (rc < 0) {
6589 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
6590 "will try again later...\n", -rc);
6591 /* reschedule for later */
6592 fan_watchdog_reset();
6593 }
6594 }
6595
6596 /*
6597 * SYSFS fan layout: hwmon compatible (device)
6598 *
6599 * pwm*_enable:
6600 * 0: "disengaged" mode
6601 * 1: manual mode
6602 * 2: native EC "auto" mode (recommended, hardware default)
6603 *
6604 * pwm*: set speed in manual mode, ignored otherwise.
6605 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6606 * interpolation.
6607 *
6608 * fan*_input: tachometer reading, RPM
6609 *
6610 *
6611 * SYSFS fan layout: extensions
6612 *
6613 * fan_watchdog (driver):
6614 * fan watchdog interval in seconds, 0 disables (default), max 120
6615 */
6616
6617 /* sysfs fan pwm1_enable ----------------------------------------------- */
6618 static ssize_t fan_pwm1_enable_show(struct device *dev,
6619 struct device_attribute *attr,
6620 char *buf)
6621 {
6622 int res, mode;
6623 u8 status;
6624
6625 res = fan_get_status_safe(&status);
6626 if (res)
6627 return res;
6628
6629 if (status & TP_EC_FAN_FULLSPEED) {
6630 mode = 0;
6631 } else if (status & TP_EC_FAN_AUTO) {
6632 mode = 2;
6633 } else
6634 mode = 1;
6635
6636 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
6637 }
6638
6639 static ssize_t fan_pwm1_enable_store(struct device *dev,
6640 struct device_attribute *attr,
6641 const char *buf, size_t count)
6642 {
6643 unsigned long t;
6644 int res, level;
6645
6646 if (parse_strtoul(buf, 2, &t))
6647 return -EINVAL;
6648
6649 tpacpi_disclose_usertask("hwmon pwm1_enable",
6650 "set fan mode to %lu\n", t);
6651
6652 switch (t) {
6653 case 0:
6654 level = TP_EC_FAN_FULLSPEED;
6655 break;
6656 case 1:
6657 level = TPACPI_FAN_LAST_LEVEL;
6658 break;
6659 case 2:
6660 level = TP_EC_FAN_AUTO;
6661 break;
6662 case 3:
6663 /* reserved for software-controlled auto mode */
6664 return -ENOSYS;
6665 default:
6666 return -EINVAL;
6667 }
6668
6669 res = fan_set_level_safe(level);
6670 if (res == -ENXIO)
6671 return -EINVAL;
6672 else if (res < 0)
6673 return res;
6674
6675 fan_watchdog_reset();
6676
6677 return count;
6678 }
6679
6680 static struct device_attribute dev_attr_fan_pwm1_enable =
6681 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
6682 fan_pwm1_enable_show, fan_pwm1_enable_store);
6683
6684 /* sysfs fan pwm1 ------------------------------------------------------ */
6685 static ssize_t fan_pwm1_show(struct device *dev,
6686 struct device_attribute *attr,
6687 char *buf)
6688 {
6689 int res;
6690 u8 status;
6691
6692 res = fan_get_status_safe(&status);
6693 if (res)
6694 return res;
6695
6696 if ((status &
6697 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
6698 status = fan_control_desired_level;
6699
6700 if (status > 7)
6701 status = 7;
6702
6703 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
6704 }
6705
6706 static ssize_t fan_pwm1_store(struct device *dev,
6707 struct device_attribute *attr,
6708 const char *buf, size_t count)
6709 {
6710 unsigned long s;
6711 int rc;
6712 u8 status, newlevel;
6713
6714 if (parse_strtoul(buf, 255, &s))
6715 return -EINVAL;
6716
6717 tpacpi_disclose_usertask("hwmon pwm1",
6718 "set fan speed to %lu\n", s);
6719
6720 /* scale down from 0-255 to 0-7 */
6721 newlevel = (s >> 5) & 0x07;
6722
6723 if (mutex_lock_killable(&fan_mutex))
6724 return -ERESTARTSYS;
6725
6726 rc = fan_get_status(&status);
6727 if (!rc && (status &
6728 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6729 rc = fan_set_level(newlevel);
6730 if (rc == -ENXIO)
6731 rc = -EINVAL;
6732 else if (!rc) {
6733 fan_update_desired_level(newlevel);
6734 fan_watchdog_reset();
6735 }
6736 }
6737
6738 mutex_unlock(&fan_mutex);
6739 return (rc)? rc : count;
6740 }
6741
6742 static struct device_attribute dev_attr_fan_pwm1 =
6743 __ATTR(pwm1, S_IWUSR | S_IRUGO,
6744 fan_pwm1_show, fan_pwm1_store);
6745
6746 /* sysfs fan fan1_input ------------------------------------------------ */
6747 static ssize_t fan_fan1_input_show(struct device *dev,
6748 struct device_attribute *attr,
6749 char *buf)
6750 {
6751 int res;
6752 unsigned int speed;
6753
6754 res = fan_get_speed(&speed);
6755 if (res < 0)
6756 return res;
6757
6758 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
6759 }
6760
6761 static struct device_attribute dev_attr_fan_fan1_input =
6762 __ATTR(fan1_input, S_IRUGO,
6763 fan_fan1_input_show, NULL);
6764
6765 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
6766 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
6767 char *buf)
6768 {
6769 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
6770 }
6771
6772 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
6773 const char *buf, size_t count)
6774 {
6775 unsigned long t;
6776
6777 if (parse_strtoul(buf, 120, &t))
6778 return -EINVAL;
6779
6780 if (!fan_control_allowed)
6781 return -EPERM;
6782
6783 fan_watchdog_maxinterval = t;
6784 fan_watchdog_reset();
6785
6786 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t);
6787
6788 return count;
6789 }
6790
6791 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
6792 fan_fan_watchdog_show, fan_fan_watchdog_store);
6793
6794 /* --------------------------------------------------------------------- */
6795 static struct attribute *fan_attributes[] = {
6796 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
6797 &dev_attr_fan_fan1_input.attr,
6798 NULL
6799 };
6800
6801 static const struct attribute_group fan_attr_group = {
6802 .attrs = fan_attributes,
6803 };
6804
6805 static int __init fan_init(struct ibm_init_struct *iibm)
6806 {
6807 int rc;
6808
6809 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
6810 "initializing fan subdriver\n");
6811
6812 mutex_init(&fan_mutex);
6813 fan_status_access_mode = TPACPI_FAN_NONE;
6814 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6815 fan_control_commands = 0;
6816 fan_watchdog_maxinterval = 0;
6817 tp_features.fan_ctrl_status_undef = 0;
6818 fan_control_desired_level = 7;
6819
6820 TPACPI_ACPIHANDLE_INIT(fans);
6821 TPACPI_ACPIHANDLE_INIT(gfan);
6822 TPACPI_ACPIHANDLE_INIT(sfan);
6823
6824 if (gfan_handle) {
6825 /* 570, 600e/x, 770e, 770x */
6826 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
6827 } else {
6828 /* all other ThinkPads: note that even old-style
6829 * ThinkPad ECs supports the fan control register */
6830 if (likely(acpi_ec_read(fan_status_offset,
6831 &fan_control_initial_status))) {
6832 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
6833 fan_quirk1_detect();
6834 } else {
6835 printk(TPACPI_ERR
6836 "ThinkPad ACPI EC access misbehaving, "
6837 "fan status and control unavailable\n");
6838 return 1;
6839 }
6840 }
6841
6842 if (sfan_handle) {
6843 /* 570, 770x-JL */
6844 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
6845 fan_control_commands |=
6846 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
6847 } else {
6848 if (!gfan_handle) {
6849 /* gfan without sfan means no fan control */
6850 /* all other models implement TP EC 0x2f control */
6851
6852 if (fans_handle) {
6853 /* X31, X40, X41 */
6854 fan_control_access_mode =
6855 TPACPI_FAN_WR_ACPI_FANS;
6856 fan_control_commands |=
6857 TPACPI_FAN_CMD_SPEED |
6858 TPACPI_FAN_CMD_LEVEL |
6859 TPACPI_FAN_CMD_ENABLE;
6860 } else {
6861 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
6862 fan_control_commands |=
6863 TPACPI_FAN_CMD_LEVEL |
6864 TPACPI_FAN_CMD_ENABLE;
6865 }
6866 }
6867 }
6868
6869 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
6870 "fan is %s, modes %d, %d\n",
6871 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
6872 fan_control_access_mode != TPACPI_FAN_WR_NONE),
6873 fan_status_access_mode, fan_control_access_mode);
6874
6875 /* fan control master switch */
6876 if (!fan_control_allowed) {
6877 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6878 fan_control_commands = 0;
6879 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
6880 "fan control features disabled by parameter\n");
6881 }
6882
6883 /* update fan_control_desired_level */
6884 if (fan_status_access_mode != TPACPI_FAN_NONE)
6885 fan_get_status_safe(NULL);
6886
6887 if (fan_status_access_mode != TPACPI_FAN_NONE ||
6888 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
6889 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
6890 &fan_attr_group);
6891 if (rc < 0)
6892 return rc;
6893
6894 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
6895 &driver_attr_fan_watchdog);
6896 if (rc < 0) {
6897 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
6898 &fan_attr_group);
6899 return rc;
6900 }
6901 return 0;
6902 } else
6903 return 1;
6904 }
6905
6906 static void fan_exit(void)
6907 {
6908 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN,
6909 "cancelling any pending fan watchdog tasks\n");
6910
6911 /* FIXME: can we really do this unconditionally? */
6912 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
6913 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
6914 &driver_attr_fan_watchdog);
6915
6916 cancel_delayed_work(&fan_watchdog_task);
6917 flush_workqueue(tpacpi_wq);
6918 }
6919
6920 static void fan_suspend(pm_message_t state)
6921 {
6922 int rc;
6923
6924 if (!fan_control_allowed)
6925 return;
6926
6927 /* Store fan status in cache */
6928 fan_control_resume_level = 0;
6929 rc = fan_get_status_safe(&fan_control_resume_level);
6930 if (rc < 0)
6931 printk(TPACPI_NOTICE
6932 "failed to read fan level for later "
6933 "restore during resume: %d\n", rc);
6934
6935 /* if it is undefined, don't attempt to restore it.
6936 * KEEP THIS LAST */
6937 if (tp_features.fan_ctrl_status_undef)
6938 fan_control_resume_level = 0;
6939 }
6940
6941 static void fan_resume(void)
6942 {
6943 u8 current_level = 7;
6944 bool do_set = false;
6945 int rc;
6946
6947 /* DSDT *always* updates status on resume */
6948 tp_features.fan_ctrl_status_undef = 0;
6949
6950 if (!fan_control_allowed ||
6951 !fan_control_resume_level ||
6952 (fan_get_status_safe(&current_level) < 0))
6953 return;
6954
6955 switch (fan_control_access_mode) {
6956 case TPACPI_FAN_WR_ACPI_SFAN:
6957 /* never decrease fan level */
6958 do_set = (fan_control_resume_level > current_level);
6959 break;
6960 case TPACPI_FAN_WR_ACPI_FANS:
6961 case TPACPI_FAN_WR_TPEC:
6962 /* never decrease fan level, scale is:
6963 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
6964 *
6965 * We expect the firmware to set either 7 or AUTO, but we
6966 * handle FULLSPEED out of paranoia.
6967 *
6968 * So, we can safely only restore FULLSPEED or 7, anything
6969 * else could slow the fan. Restoring AUTO is useless, at
6970 * best that's exactly what the DSDT already set (it is the
6971 * slower it uses).
6972 *
6973 * Always keep in mind that the DSDT *will* have set the
6974 * fans to what the vendor supposes is the best level. We
6975 * muck with it only to speed the fan up.
6976 */
6977 if (fan_control_resume_level != 7 &&
6978 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
6979 return;
6980 else
6981 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
6982 (current_level != fan_control_resume_level);
6983 break;
6984 default:
6985 return;
6986 }
6987 if (do_set) {
6988 printk(TPACPI_NOTICE
6989 "restoring fan level to 0x%02x\n",
6990 fan_control_resume_level);
6991 rc = fan_set_level_safe(fan_control_resume_level);
6992 if (rc < 0)
6993 printk(TPACPI_NOTICE
6994 "failed to restore fan level: %d\n", rc);
6995 }
6996 }
6997
6998 static int fan_read(char *p)
6999 {
7000 int len = 0;
7001 int rc;
7002 u8 status;
7003 unsigned int speed = 0;
7004
7005 switch (fan_status_access_mode) {
7006 case TPACPI_FAN_RD_ACPI_GFAN:
7007 /* 570, 600e/x, 770e, 770x */
7008 rc = fan_get_status_safe(&status);
7009 if (rc < 0)
7010 return rc;
7011
7012 len += sprintf(p + len, "status:\t\t%s\n"
7013 "level:\t\t%d\n",
7014 (status != 0) ? "enabled" : "disabled", status);
7015 break;
7016
7017 case TPACPI_FAN_RD_TPEC:
7018 /* all except 570, 600e/x, 770e, 770x */
7019 rc = fan_get_status_safe(&status);
7020 if (rc < 0)
7021 return rc;
7022
7023 len += sprintf(p + len, "status:\t\t%s\n",
7024 (status != 0) ? "enabled" : "disabled");
7025
7026 rc = fan_get_speed(&speed);
7027 if (rc < 0)
7028 return rc;
7029
7030 len += sprintf(p + len, "speed:\t\t%d\n", speed);
7031
7032 if (status & TP_EC_FAN_FULLSPEED)
7033 /* Disengaged mode takes precedence */
7034 len += sprintf(p + len, "level:\t\tdisengaged\n");
7035 else if (status & TP_EC_FAN_AUTO)
7036 len += sprintf(p + len, "level:\t\tauto\n");
7037 else
7038 len += sprintf(p + len, "level:\t\t%d\n", status);
7039 break;
7040
7041 case TPACPI_FAN_NONE:
7042 default:
7043 len += sprintf(p + len, "status:\t\tnot supported\n");
7044 }
7045
7046 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
7047 len += sprintf(p + len, "commands:\tlevel <level>");
7048
7049 switch (fan_control_access_mode) {
7050 case TPACPI_FAN_WR_ACPI_SFAN:
7051 len += sprintf(p + len, " (<level> is 0-7)\n");
7052 break;
7053
7054 default:
7055 len += sprintf(p + len, " (<level> is 0-7, "
7056 "auto, disengaged, full-speed)\n");
7057 break;
7058 }
7059 }
7060
7061 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
7062 len += sprintf(p + len, "commands:\tenable, disable\n"
7063 "commands:\twatchdog <timeout> (<timeout> "
7064 "is 0 (off), 1-120 (seconds))\n");
7065
7066 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
7067 len += sprintf(p + len, "commands:\tspeed <speed>"
7068 " (<speed> is 0-65535)\n");
7069
7070 return len;
7071 }
7072
7073 static int fan_write_cmd_level(const char *cmd, int *rc)
7074 {
7075 int level;
7076
7077 if (strlencmp(cmd, "level auto") == 0)
7078 level = TP_EC_FAN_AUTO;
7079 else if ((strlencmp(cmd, "level disengaged") == 0) |
7080 (strlencmp(cmd, "level full-speed") == 0))
7081 level = TP_EC_FAN_FULLSPEED;
7082 else if (sscanf(cmd, "level %d", &level) != 1)
7083 return 0;
7084
7085 *rc = fan_set_level_safe(level);
7086 if (*rc == -ENXIO)
7087 printk(TPACPI_ERR "level command accepted for unsupported "
7088 "access mode %d", fan_control_access_mode);
7089 else if (!*rc)
7090 tpacpi_disclose_usertask("procfs fan",
7091 "set level to %d\n", level);
7092
7093 return 1;
7094 }
7095
7096 static int fan_write_cmd_enable(const char *cmd, int *rc)
7097 {
7098 if (strlencmp(cmd, "enable") != 0)
7099 return 0;
7100
7101 *rc = fan_set_enable();
7102 if (*rc == -ENXIO)
7103 printk(TPACPI_ERR "enable command accepted for unsupported "
7104 "access mode %d", fan_control_access_mode);
7105 else if (!*rc)
7106 tpacpi_disclose_usertask("procfs fan", "enable\n");
7107
7108 return 1;
7109 }
7110
7111 static int fan_write_cmd_disable(const char *cmd, int *rc)
7112 {
7113 if (strlencmp(cmd, "disable") != 0)
7114 return 0;
7115
7116 *rc = fan_set_disable();
7117 if (*rc == -ENXIO)
7118 printk(TPACPI_ERR "disable command accepted for unsupported "
7119 "access mode %d", fan_control_access_mode);
7120 else if (!*rc)
7121 tpacpi_disclose_usertask("procfs fan", "disable\n");
7122
7123 return 1;
7124 }
7125
7126 static int fan_write_cmd_speed(const char *cmd, int *rc)
7127 {
7128 int speed;
7129
7130 /* TODO:
7131 * Support speed <low> <medium> <high> ? */
7132
7133 if (sscanf(cmd, "speed %d", &speed) != 1)
7134 return 0;
7135
7136 *rc = fan_set_speed(speed);
7137 if (*rc == -ENXIO)
7138 printk(TPACPI_ERR "speed command accepted for unsupported "
7139 "access mode %d", fan_control_access_mode);
7140 else if (!*rc)
7141 tpacpi_disclose_usertask("procfs fan",
7142 "set speed to %d\n", speed);
7143
7144 return 1;
7145 }
7146
7147 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
7148 {
7149 int interval;
7150
7151 if (sscanf(cmd, "watchdog %d", &interval) != 1)
7152 return 0;
7153
7154 if (interval < 0 || interval > 120)
7155 *rc = -EINVAL;
7156 else {
7157 fan_watchdog_maxinterval = interval;
7158 tpacpi_disclose_usertask("procfs fan",
7159 "set watchdog timer to %d\n",
7160 interval);
7161 }
7162
7163 return 1;
7164 }
7165
7166 static int fan_write(char *buf)
7167 {
7168 char *cmd;
7169 int rc = 0;
7170
7171 while (!rc && (cmd = next_cmd(&buf))) {
7172 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
7173 fan_write_cmd_level(cmd, &rc)) &&
7174 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
7175 (fan_write_cmd_enable(cmd, &rc) ||
7176 fan_write_cmd_disable(cmd, &rc) ||
7177 fan_write_cmd_watchdog(cmd, &rc))) &&
7178 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
7179 fan_write_cmd_speed(cmd, &rc))
7180 )
7181 rc = -EINVAL;
7182 else if (!rc)
7183 fan_watchdog_reset();
7184 }
7185
7186 return rc;
7187 }
7188
7189 static struct ibm_struct fan_driver_data = {
7190 .name = "fan",
7191 .read = fan_read,
7192 .write = fan_write,
7193 .exit = fan_exit,
7194 .suspend = fan_suspend,
7195 .resume = fan_resume,
7196 };
7197
7198 /****************************************************************************
7199 ****************************************************************************
7200 *
7201 * Infrastructure
7202 *
7203 ****************************************************************************
7204 ****************************************************************************/
7205
7206 /* sysfs name ---------------------------------------------------------- */
7207 static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
7208 struct device_attribute *attr,
7209 char *buf)
7210 {
7211 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
7212 }
7213
7214 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
7215 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
7216
7217 /* --------------------------------------------------------------------- */
7218
7219 /* /proc support */
7220 static struct proc_dir_entry *proc_dir;
7221
7222 /*
7223 * Module and infrastructure proble, init and exit handling
7224 */
7225
7226 static int force_load;
7227
7228 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
7229 static const char * __init str_supported(int is_supported)
7230 {
7231 static char text_unsupported[] __initdata = "not supported";
7232
7233 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
7234 }
7235 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
7236
7237 static void ibm_exit(struct ibm_struct *ibm)
7238 {
7239 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
7240
7241 list_del_init(&ibm->all_drivers);
7242
7243 if (ibm->flags.acpi_notify_installed) {
7244 dbg_printk(TPACPI_DBG_EXIT,
7245 "%s: acpi_remove_notify_handler\n", ibm->name);
7246 BUG_ON(!ibm->acpi);
7247 acpi_remove_notify_handler(*ibm->acpi->handle,
7248 ibm->acpi->type,
7249 dispatch_acpi_notify);
7250 ibm->flags.acpi_notify_installed = 0;
7251 ibm->flags.acpi_notify_installed = 0;
7252 }
7253
7254 if (ibm->flags.proc_created) {
7255 dbg_printk(TPACPI_DBG_EXIT,
7256 "%s: remove_proc_entry\n", ibm->name);
7257 remove_proc_entry(ibm->name, proc_dir);
7258 ibm->flags.proc_created = 0;
7259 }
7260
7261 if (ibm->flags.acpi_driver_registered) {
7262 dbg_printk(TPACPI_DBG_EXIT,
7263 "%s: acpi_bus_unregister_driver\n", ibm->name);
7264 BUG_ON(!ibm->acpi);
7265 acpi_bus_unregister_driver(ibm->acpi->driver);
7266 kfree(ibm->acpi->driver);
7267 ibm->acpi->driver = NULL;
7268 ibm->flags.acpi_driver_registered = 0;
7269 }
7270
7271 if (ibm->flags.init_called && ibm->exit) {
7272 ibm->exit();
7273 ibm->flags.init_called = 0;
7274 }
7275
7276 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
7277 }
7278
7279 static int __init ibm_init(struct ibm_init_struct *iibm)
7280 {
7281 int ret;
7282 struct ibm_struct *ibm = iibm->data;
7283 struct proc_dir_entry *entry;
7284
7285 BUG_ON(ibm == NULL);
7286
7287 INIT_LIST_HEAD(&ibm->all_drivers);
7288
7289 if (ibm->flags.experimental && !experimental)
7290 return 0;
7291
7292 dbg_printk(TPACPI_DBG_INIT,
7293 "probing for %s\n", ibm->name);
7294
7295 if (iibm->init) {
7296 ret = iibm->init(iibm);
7297 if (ret > 0)
7298 return 0; /* probe failed */
7299 if (ret)
7300 return ret;
7301
7302 ibm->flags.init_called = 1;
7303 }
7304
7305 if (ibm->acpi) {
7306 if (ibm->acpi->hid) {
7307 ret = register_tpacpi_subdriver(ibm);
7308 if (ret)
7309 goto err_out;
7310 }
7311
7312 if (ibm->acpi->notify) {
7313 ret = setup_acpi_notify(ibm);
7314 if (ret == -ENODEV) {
7315 printk(TPACPI_NOTICE "disabling subdriver %s\n",
7316 ibm->name);
7317 ret = 0;
7318 goto err_out;
7319 }
7320 if (ret < 0)
7321 goto err_out;
7322 }
7323 }
7324
7325 dbg_printk(TPACPI_DBG_INIT,
7326 "%s installed\n", ibm->name);
7327
7328 if (ibm->read) {
7329 entry = create_proc_entry(ibm->name,
7330 S_IFREG | S_IRUGO | S_IWUSR,
7331 proc_dir);
7332 if (!entry) {
7333 printk(TPACPI_ERR "unable to create proc entry %s\n",
7334 ibm->name);
7335 ret = -ENODEV;
7336 goto err_out;
7337 }
7338 entry->owner = THIS_MODULE;
7339 entry->data = ibm;
7340 entry->read_proc = &dispatch_procfs_read;
7341 if (ibm->write)
7342 entry->write_proc = &dispatch_procfs_write;
7343 ibm->flags.proc_created = 1;
7344 }
7345
7346 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
7347
7348 return 0;
7349
7350 err_out:
7351 dbg_printk(TPACPI_DBG_INIT,
7352 "%s: at error exit path with result %d\n",
7353 ibm->name, ret);
7354
7355 ibm_exit(ibm);
7356 return (ret < 0)? ret : 0;
7357 }
7358
7359 /* Probing */
7360
7361 /* returns 0 - probe ok, or < 0 - probe error.
7362 * Probe ok doesn't mean thinkpad found.
7363 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7364 static int __must_check __init get_thinkpad_model_data(
7365 struct thinkpad_id_data *tp)
7366 {
7367 const struct dmi_device *dev = NULL;
7368 char ec_fw_string[18];
7369 char const *s;
7370
7371 if (!tp)
7372 return -EINVAL;
7373
7374 memset(tp, 0, sizeof(*tp));
7375
7376 if (dmi_name_in_vendors("IBM"))
7377 tp->vendor = PCI_VENDOR_ID_IBM;
7378 else if (dmi_name_in_vendors("LENOVO"))
7379 tp->vendor = PCI_VENDOR_ID_LENOVO;
7380 else
7381 return 0;
7382
7383 s = dmi_get_system_info(DMI_BIOS_VERSION);
7384 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
7385 if (s && !tp->bios_version_str)
7386 return -ENOMEM;
7387 if (!tp->bios_version_str)
7388 return 0;
7389 tp->bios_model = tp->bios_version_str[0]
7390 | (tp->bios_version_str[1] << 8);
7391
7392 /*
7393 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7394 * X32 or newer, all Z series; Some models must have an
7395 * up-to-date BIOS or they will not be detected.
7396 *
7397 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7398 */
7399 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
7400 if (sscanf(dev->name,
7401 "IBM ThinkPad Embedded Controller -[%17c",
7402 ec_fw_string) == 1) {
7403 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
7404 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
7405
7406 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
7407 if (!tp->ec_version_str)
7408 return -ENOMEM;
7409 tp->ec_model = ec_fw_string[0]
7410 | (ec_fw_string[1] << 8);
7411 break;
7412 }
7413 }
7414
7415 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
7416 if (s && !strnicmp(s, "ThinkPad", 8)) {
7417 tp->model_str = kstrdup(s, GFP_KERNEL);
7418 if (!tp->model_str)
7419 return -ENOMEM;
7420 }
7421
7422 s = dmi_get_system_info(DMI_PRODUCT_NAME);
7423 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
7424 if (s && !tp->nummodel_str)
7425 return -ENOMEM;
7426
7427 return 0;
7428 }
7429
7430 static int __init probe_for_thinkpad(void)
7431 {
7432 int is_thinkpad;
7433
7434 if (acpi_disabled)
7435 return -ENODEV;
7436
7437 /*
7438 * Non-ancient models have better DMI tagging, but very old models
7439 * don't.
7440 */
7441 is_thinkpad = (thinkpad_id.model_str != NULL);
7442
7443 /* ec is required because many other handles are relative to it */
7444 TPACPI_ACPIHANDLE_INIT(ec);
7445 if (!ec_handle) {
7446 if (is_thinkpad)
7447 printk(TPACPI_ERR
7448 "Not yet supported ThinkPad detected!\n");
7449 return -ENODEV;
7450 }
7451
7452 /*
7453 * Risks a regression on very old machines, but reduces potential
7454 * false positives a damn great deal
7455 */
7456 if (!is_thinkpad)
7457 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
7458
7459 if (!is_thinkpad && !force_load)
7460 return -ENODEV;
7461
7462 return 0;
7463 }
7464
7465
7466 /* Module init, exit, parameters */
7467
7468 static struct ibm_init_struct ibms_init[] __initdata = {
7469 {
7470 .init = thinkpad_acpi_driver_init,
7471 .data = &thinkpad_acpi_driver_data,
7472 },
7473 {
7474 .init = hotkey_init,
7475 .data = &hotkey_driver_data,
7476 },
7477 {
7478 .init = bluetooth_init,
7479 .data = &bluetooth_driver_data,
7480 },
7481 {
7482 .init = wan_init,
7483 .data = &wan_driver_data,
7484 },
7485 {
7486 .init = uwb_init,
7487 .data = &uwb_driver_data,
7488 },
7489 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
7490 {
7491 .init = video_init,
7492 .data = &video_driver_data,
7493 },
7494 #endif
7495 {
7496 .init = light_init,
7497 .data = &light_driver_data,
7498 },
7499 #ifdef CONFIG_THINKPAD_ACPI_DOCK
7500 {
7501 .init = dock_init,
7502 .data = &dock_driver_data[0],
7503 },
7504 {
7505 .init = dock_init2,
7506 .data = &dock_driver_data[1],
7507 },
7508 #endif
7509 #ifdef CONFIG_THINKPAD_ACPI_BAY
7510 {
7511 .init = bay_init,
7512 .data = &bay_driver_data,
7513 },
7514 #endif
7515 {
7516 .init = cmos_init,
7517 .data = &cmos_driver_data,
7518 },
7519 {
7520 .init = led_init,
7521 .data = &led_driver_data,
7522 },
7523 {
7524 .init = beep_init,
7525 .data = &beep_driver_data,
7526 },
7527 {
7528 .init = thermal_init,
7529 .data = &thermal_driver_data,
7530 },
7531 {
7532 .data = &ecdump_driver_data,
7533 },
7534 {
7535 .init = brightness_init,
7536 .data = &brightness_driver_data,
7537 },
7538 {
7539 .data = &volume_driver_data,
7540 },
7541 {
7542 .init = fan_init,
7543 .data = &fan_driver_data,
7544 },
7545 };
7546
7547 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
7548 {
7549 unsigned int i;
7550 struct ibm_struct *ibm;
7551
7552 if (!kp || !kp->name || !val)
7553 return -EINVAL;
7554
7555 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7556 ibm = ibms_init[i].data;
7557 WARN_ON(ibm == NULL);
7558
7559 if (!ibm || !ibm->name)
7560 continue;
7561
7562 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
7563 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
7564 return -ENOSPC;
7565 strcpy(ibms_init[i].param, val);
7566 strcat(ibms_init[i].param, ",");
7567 return 0;
7568 }
7569 }
7570
7571 return -EINVAL;
7572 }
7573
7574 module_param(experimental, int, 0);
7575 MODULE_PARM_DESC(experimental,
7576 "Enables experimental features when non-zero");
7577
7578 module_param_named(debug, dbg_level, uint, 0);
7579 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
7580
7581 module_param(force_load, bool, 0);
7582 MODULE_PARM_DESC(force_load,
7583 "Attempts to load the driver even on a "
7584 "mis-identified ThinkPad when true");
7585
7586 module_param_named(fan_control, fan_control_allowed, bool, 0);
7587 MODULE_PARM_DESC(fan_control,
7588 "Enables setting fan parameters features when true");
7589
7590 module_param_named(brightness_mode, brightness_mode, uint, 0);
7591 MODULE_PARM_DESC(brightness_mode,
7592 "Selects brightness control strategy: "
7593 "0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM");
7594
7595 module_param(brightness_enable, uint, 0);
7596 MODULE_PARM_DESC(brightness_enable,
7597 "Enables backlight control when 1, disables when 0");
7598
7599 module_param(hotkey_report_mode, uint, 0);
7600 MODULE_PARM_DESC(hotkey_report_mode,
7601 "used for backwards compatibility with userspace, "
7602 "see documentation");
7603
7604 #define TPACPI_PARAM(feature) \
7605 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
7606 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
7607 "at module load, see documentation")
7608
7609 TPACPI_PARAM(hotkey);
7610 TPACPI_PARAM(bluetooth);
7611 TPACPI_PARAM(video);
7612 TPACPI_PARAM(light);
7613 #ifdef CONFIG_THINKPAD_ACPI_DOCK
7614 TPACPI_PARAM(dock);
7615 #endif
7616 #ifdef CONFIG_THINKPAD_ACPI_BAY
7617 TPACPI_PARAM(bay);
7618 #endif /* CONFIG_THINKPAD_ACPI_BAY */
7619 TPACPI_PARAM(cmos);
7620 TPACPI_PARAM(led);
7621 TPACPI_PARAM(beep);
7622 TPACPI_PARAM(ecdump);
7623 TPACPI_PARAM(brightness);
7624 TPACPI_PARAM(volume);
7625 TPACPI_PARAM(fan);
7626
7627 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7628 module_param(dbg_wlswemul, uint, 0);
7629 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
7630 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
7631 MODULE_PARM_DESC(wlsw_state,
7632 "Initial state of the emulated WLSW switch");
7633
7634 module_param(dbg_bluetoothemul, uint, 0);
7635 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
7636 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
7637 MODULE_PARM_DESC(bluetooth_state,
7638 "Initial state of the emulated bluetooth switch");
7639
7640 module_param(dbg_wwanemul, uint, 0);
7641 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
7642 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
7643 MODULE_PARM_DESC(wwan_state,
7644 "Initial state of the emulated WWAN switch");
7645
7646 module_param(dbg_uwbemul, uint, 0);
7647 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
7648 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
7649 MODULE_PARM_DESC(uwb_state,
7650 "Initial state of the emulated UWB switch");
7651 #endif
7652
7653 static void thinkpad_acpi_module_exit(void)
7654 {
7655 struct ibm_struct *ibm, *itmp;
7656
7657 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
7658
7659 list_for_each_entry_safe_reverse(ibm, itmp,
7660 &tpacpi_all_drivers,
7661 all_drivers) {
7662 ibm_exit(ibm);
7663 }
7664
7665 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
7666
7667 if (tpacpi_inputdev) {
7668 if (tp_features.input_device_registered)
7669 input_unregister_device(tpacpi_inputdev);
7670 else
7671 input_free_device(tpacpi_inputdev);
7672 }
7673
7674 if (tpacpi_hwmon)
7675 hwmon_device_unregister(tpacpi_hwmon);
7676
7677 if (tp_features.sensors_pdev_attrs_registered)
7678 device_remove_file(&tpacpi_sensors_pdev->dev,
7679 &dev_attr_thinkpad_acpi_pdev_name);
7680 if (tpacpi_sensors_pdev)
7681 platform_device_unregister(tpacpi_sensors_pdev);
7682 if (tpacpi_pdev)
7683 platform_device_unregister(tpacpi_pdev);
7684
7685 if (tp_features.sensors_pdrv_attrs_registered)
7686 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
7687 if (tp_features.platform_drv_attrs_registered)
7688 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
7689
7690 if (tp_features.sensors_pdrv_registered)
7691 platform_driver_unregister(&tpacpi_hwmon_pdriver);
7692
7693 if (tp_features.platform_drv_registered)
7694 platform_driver_unregister(&tpacpi_pdriver);
7695
7696 if (proc_dir)
7697 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
7698
7699 if (tpacpi_wq)
7700 destroy_workqueue(tpacpi_wq);
7701
7702 kfree(thinkpad_id.bios_version_str);
7703 kfree(thinkpad_id.ec_version_str);
7704 kfree(thinkpad_id.model_str);
7705 }
7706
7707
7708 static int __init thinkpad_acpi_module_init(void)
7709 {
7710 int ret, i;
7711
7712 tpacpi_lifecycle = TPACPI_LIFE_INIT;
7713
7714 /* Parameter checking */
7715 if (hotkey_report_mode > 2)
7716 return -EINVAL;
7717
7718 /* Driver-level probe */
7719
7720 ret = get_thinkpad_model_data(&thinkpad_id);
7721 if (ret) {
7722 printk(TPACPI_ERR
7723 "unable to get DMI data: %d\n", ret);
7724 thinkpad_acpi_module_exit();
7725 return ret;
7726 }
7727 ret = probe_for_thinkpad();
7728 if (ret) {
7729 thinkpad_acpi_module_exit();
7730 return ret;
7731 }
7732
7733 /* Driver initialization */
7734
7735 TPACPI_ACPIHANDLE_INIT(ecrd);
7736 TPACPI_ACPIHANDLE_INIT(ecwr);
7737
7738 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
7739 if (!tpacpi_wq) {
7740 thinkpad_acpi_module_exit();
7741 return -ENOMEM;
7742 }
7743
7744 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
7745 if (!proc_dir) {
7746 printk(TPACPI_ERR
7747 "unable to create proc dir " TPACPI_PROC_DIR);
7748 thinkpad_acpi_module_exit();
7749 return -ENODEV;
7750 }
7751 proc_dir->owner = THIS_MODULE;
7752
7753 ret = platform_driver_register(&tpacpi_pdriver);
7754 if (ret) {
7755 printk(TPACPI_ERR
7756 "unable to register main platform driver\n");
7757 thinkpad_acpi_module_exit();
7758 return ret;
7759 }
7760 tp_features.platform_drv_registered = 1;
7761
7762 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
7763 if (ret) {
7764 printk(TPACPI_ERR
7765 "unable to register hwmon platform driver\n");
7766 thinkpad_acpi_module_exit();
7767 return ret;
7768 }
7769 tp_features.sensors_pdrv_registered = 1;
7770
7771 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
7772 if (!ret) {
7773 tp_features.platform_drv_attrs_registered = 1;
7774 ret = tpacpi_create_driver_attributes(
7775 &tpacpi_hwmon_pdriver.driver);
7776 }
7777 if (ret) {
7778 printk(TPACPI_ERR
7779 "unable to create sysfs driver attributes\n");
7780 thinkpad_acpi_module_exit();
7781 return ret;
7782 }
7783 tp_features.sensors_pdrv_attrs_registered = 1;
7784
7785
7786 /* Device initialization */
7787 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
7788 NULL, 0);
7789 if (IS_ERR(tpacpi_pdev)) {
7790 ret = PTR_ERR(tpacpi_pdev);
7791 tpacpi_pdev = NULL;
7792 printk(TPACPI_ERR "unable to register platform device\n");
7793 thinkpad_acpi_module_exit();
7794 return ret;
7795 }
7796 tpacpi_sensors_pdev = platform_device_register_simple(
7797 TPACPI_HWMON_DRVR_NAME,
7798 -1, NULL, 0);
7799 if (IS_ERR(tpacpi_sensors_pdev)) {
7800 ret = PTR_ERR(tpacpi_sensors_pdev);
7801 tpacpi_sensors_pdev = NULL;
7802 printk(TPACPI_ERR
7803 "unable to register hwmon platform device\n");
7804 thinkpad_acpi_module_exit();
7805 return ret;
7806 }
7807 ret = device_create_file(&tpacpi_sensors_pdev->dev,
7808 &dev_attr_thinkpad_acpi_pdev_name);
7809 if (ret) {
7810 printk(TPACPI_ERR
7811 "unable to create sysfs hwmon device attributes\n");
7812 thinkpad_acpi_module_exit();
7813 return ret;
7814 }
7815 tp_features.sensors_pdev_attrs_registered = 1;
7816 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
7817 if (IS_ERR(tpacpi_hwmon)) {
7818 ret = PTR_ERR(tpacpi_hwmon);
7819 tpacpi_hwmon = NULL;
7820 printk(TPACPI_ERR "unable to register hwmon device\n");
7821 thinkpad_acpi_module_exit();
7822 return ret;
7823 }
7824 mutex_init(&tpacpi_inputdev_send_mutex);
7825 tpacpi_inputdev = input_allocate_device();
7826 if (!tpacpi_inputdev) {
7827 printk(TPACPI_ERR "unable to allocate input device\n");
7828 thinkpad_acpi_module_exit();
7829 return -ENOMEM;
7830 } else {
7831 /* Prepare input device, but don't register */
7832 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
7833 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7834 tpacpi_inputdev->id.bustype = BUS_HOST;
7835 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
7836 thinkpad_id.vendor :
7837 PCI_VENDOR_ID_IBM;
7838 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
7839 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
7840 }
7841 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7842 ret = ibm_init(&ibms_init[i]);
7843 if (ret >= 0 && *ibms_init[i].param)
7844 ret = ibms_init[i].data->write(ibms_init[i].param);
7845 if (ret < 0) {
7846 thinkpad_acpi_module_exit();
7847 return ret;
7848 }
7849 }
7850 ret = input_register_device(tpacpi_inputdev);
7851 if (ret < 0) {
7852 printk(TPACPI_ERR "unable to register input device\n");
7853 thinkpad_acpi_module_exit();
7854 return ret;
7855 } else {
7856 tp_features.input_device_registered = 1;
7857 }
7858
7859 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
7860 return 0;
7861 }
7862
7863 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
7864
7865 /*
7866 * DMI matching for module autoloading
7867 *
7868 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7869 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
7870 *
7871 * Only models listed in thinkwiki will be supported, so add yours
7872 * if it is not there yet.
7873 */
7874 #define IBM_BIOS_MODULE_ALIAS(__type) \
7875 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
7876
7877 /* Non-ancient thinkpads */
7878 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
7879 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
7880
7881 /* Ancient thinkpad BIOSes have to be identified by
7882 * BIOS type or model number, and there are far less
7883 * BIOS types than model numbers... */
7884 IBM_BIOS_MODULE_ALIAS("I[BDHIMNOTWVYZ]");
7885 IBM_BIOS_MODULE_ALIAS("1[0368A-GIKM-PST]");
7886 IBM_BIOS_MODULE_ALIAS("K[UX-Z]");
7887
7888 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>");
7889 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>");
7890 MODULE_DESCRIPTION(TPACPI_DESC);
7891 MODULE_VERSION(TPACPI_VERSION);
7892 MODULE_LICENSE("GPL");
7893
7894 module_init(thinkpad_acpi_module_init);
7895 module_exit(thinkpad_acpi_module_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree