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thinkpad-acpi: add new debug helpers and warn of deprecated atts
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / platform / x86 / thinkpad_acpi.c
blob1a8828ce26635f3d8dcd238f90cc9a39d1b3de6f
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 0x020200
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
193 #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off")
194 #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
195 #define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
196
197
198 /****************************************************************************
199 * Driver-wide structs and misc. variables
200 */
201
202 struct ibm_struct;
203
204 struct tp_acpi_drv_struct {
205 const struct acpi_device_id *hid;
206 struct acpi_driver *driver;
207
208 void (*notify) (struct ibm_struct *, u32);
209 acpi_handle *handle;
210 u32 type;
211 struct acpi_device *device;
212 };
213
214 struct ibm_struct {
215 char *name;
216
217 int (*read) (char *);
218 int (*write) (char *);
219 void (*exit) (void);
220 void (*resume) (void);
221 void (*suspend) (pm_message_t state);
222 void (*shutdown) (void);
223
224 struct list_head all_drivers;
225
226 struct tp_acpi_drv_struct *acpi;
227
228 struct {
229 u8 acpi_driver_registered:1;
230 u8 acpi_notify_installed:1;
231 u8 proc_created:1;
232 u8 init_called:1;
233 u8 experimental:1;
234 } flags;
235 };
236
237 struct ibm_init_struct {
238 char param[32];
239
240 int (*init) (struct ibm_init_struct *);
241 struct ibm_struct *data;
242 };
243
244 static struct {
245 #ifdef CONFIG_THINKPAD_ACPI_BAY
246 u32 bay_status:1;
247 u32 bay_eject:1;
248 u32 bay_status2:1;
249 u32 bay_eject2:1;
250 #endif
251 u32 bluetooth:1;
252 u32 hotkey:1;
253 u32 hotkey_mask:1;
254 u32 hotkey_wlsw:1;
255 u32 hotkey_tablet:1;
256 u32 light:1;
257 u32 light_status:1;
258 u32 bright_16levels:1;
259 u32 bright_acpimode:1;
260 u32 wan:1;
261 u32 uwb:1;
262 u32 fan_ctrl_status_undef:1;
263 u32 input_device_registered:1;
264 u32 platform_drv_registered:1;
265 u32 platform_drv_attrs_registered:1;
266 u32 sensors_pdrv_registered:1;
267 u32 sensors_pdrv_attrs_registered:1;
268 u32 sensors_pdev_attrs_registered:1;
269 u32 hotkey_poll_active:1;
270 } tp_features;
271
272 static struct {
273 u16 hotkey_mask_ff:1;
274 u16 bright_cmos_ec_unsync:1;
275 } tp_warned;
276
277 struct thinkpad_id_data {
278 unsigned int vendor; /* ThinkPad vendor:
279 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */
280
281 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */
282 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */
283
284 u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */
285 u16 ec_model;
286
287 char *model_str; /* ThinkPad T43 */
288 char *nummodel_str; /* 9384A9C for a 9384-A9C model */
289 };
290 static struct thinkpad_id_data thinkpad_id;
291
292 static enum {
293 TPACPI_LIFE_INIT = 0,
294 TPACPI_LIFE_RUNNING,
295 TPACPI_LIFE_EXITING,
296 } tpacpi_lifecycle;
297
298 static int experimental;
299 static u32 dbg_level;
300
301 static struct workqueue_struct *tpacpi_wq;
302
303 /* Special LED class that can defer work */
304 struct tpacpi_led_classdev {
305 struct led_classdev led_classdev;
306 struct work_struct work;
307 enum led_brightness new_brightness;
308 unsigned int led;
309 };
310
311 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
312 static int dbg_wlswemul;
313 static int tpacpi_wlsw_emulstate;
314 static int dbg_bluetoothemul;
315 static int tpacpi_bluetooth_emulstate;
316 static int dbg_wwanemul;
317 static int tpacpi_wwan_emulstate;
318 static int dbg_uwbemul;
319 static int tpacpi_uwb_emulstate;
320 #endif
321
322
323 /*************************************************************************
324 * Debugging helpers
325 */
326
327 #define dbg_printk(a_dbg_level, format, arg...) \
328 do { if (dbg_level & (a_dbg_level)) \
329 printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \
330 } while (0)
331
332 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
333 #define vdbg_printk dbg_printk
334 static const char *str_supported(int is_supported);
335 #else
336 #define vdbg_printk(a_dbg_level, format, arg...) \
337 do { } while (0)
338 #endif
339
340 static void tpacpi_log_usertask(const char * const what)
341 {
342 printk(TPACPI_DEBUG "%s: access by process with PID %d\n",
343 what, task_tgid_vnr(current));
344 }
345
346 #define tpacpi_disclose_usertask(what, format, arg...) \
347 do { \
348 if (unlikely( \
349 (dbg_level & TPACPI_DBG_DISCLOSETASK) && \
350 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \
351 printk(TPACPI_DEBUG "%s: PID %d: " format, \
352 what, task_tgid_vnr(current), ## arg); \
353 } \
354 } while (0)
355
356 /****************************************************************************
357 ****************************************************************************
358 *
359 * ACPI Helpers and device model
360 *
361 ****************************************************************************
362 ****************************************************************************/
363
364 /*************************************************************************
365 * ACPI basic handles
366 */
367
368 static acpi_handle root_handle;
369
370 #define TPACPI_HANDLE(object, parent, paths...) \
371 static acpi_handle object##_handle; \
372 static acpi_handle *object##_parent = &parent##_handle; \
373 static char *object##_path; \
374 static char *object##_paths[] = { paths }
375
376 TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */
377 "\\_SB.PCI.ISA.EC", /* 570 */
378 "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */
379 "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */
380 "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */
381 "\\_SB.PCI0.ICH3.EC0", /* R31 */
382 "\\_SB.PCI0.LPC.EC", /* all others */
383 );
384
385 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */
386 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */
387
388 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */
389 /* T4x, X31, X40 */
390 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */
391 "\\CMS", /* R40, R40e */
392 ); /* all others */
393
394 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */
395 "^HKEY", /* R30, R31 */
396 "HKEY", /* all others */
397 ); /* 570 */
398
399 TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */
400 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */
401 "\\_SB.PCI0.VID0", /* 770e */
402 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */
403 "\\_SB.PCI0.AGP.VID", /* all others */
404 ); /* R30, R31 */
405
406
407 /*************************************************************************
408 * ACPI helpers
409 */
410
411 static int acpi_evalf(acpi_handle handle,
412 void *res, char *method, char *fmt, ...)
413 {
414 char *fmt0 = fmt;
415 struct acpi_object_list params;
416 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS];
417 struct acpi_buffer result, *resultp;
418 union acpi_object out_obj;
419 acpi_status status;
420 va_list ap;
421 char res_type;
422 int success;
423 int quiet;
424
425 if (!*fmt) {
426 printk(TPACPI_ERR "acpi_evalf() called with empty format\n");
427 return 0;
428 }
429
430 if (*fmt == 'q') {
431 quiet = 1;
432 fmt++;
433 } else
434 quiet = 0;
435
436 res_type = *(fmt++);
437
438 params.count = 0;
439 params.pointer = &in_objs[0];
440
441 va_start(ap, fmt);
442 while (*fmt) {
443 char c = *(fmt++);
444 switch (c) {
445 case 'd': /* int */
446 in_objs[params.count].integer.value = va_arg(ap, int);
447 in_objs[params.count++].type = ACPI_TYPE_INTEGER;
448 break;
449 /* add more types as needed */
450 default:
451 printk(TPACPI_ERR "acpi_evalf() called "
452 "with invalid format character '%c'\n", c);
453 return 0;
454 }
455 }
456 va_end(ap);
457
458 if (res_type != 'v') {
459 result.length = sizeof(out_obj);
460 result.pointer = &out_obj;
461 resultp = &result;
462 } else
463 resultp = NULL;
464
465 status = acpi_evaluate_object(handle, method, &params, resultp);
466
467 switch (res_type) {
468 case 'd': /* int */
469 if (res)
470 *(int *)res = out_obj.integer.value;
471 success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER;
472 break;
473 case 'v': /* void */
474 success = status == AE_OK;
475 break;
476 /* add more types as needed */
477 default:
478 printk(TPACPI_ERR "acpi_evalf() called "
479 "with invalid format character '%c'\n", res_type);
480 return 0;
481 }
482
483 if (!success && !quiet)
484 printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n",
485 method, fmt0, status);
486
487 return success;
488 }
489
490 static int acpi_ec_read(int i, u8 *p)
491 {
492 int v;
493
494 if (ecrd_handle) {
495 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i))
496 return 0;
497 *p = v;
498 } else {
499 if (ec_read(i, p) < 0)
500 return 0;
501 }
502
503 return 1;
504 }
505
506 static int acpi_ec_write(int i, u8 v)
507 {
508 if (ecwr_handle) {
509 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v))
510 return 0;
511 } else {
512 if (ec_write(i, v) < 0)
513 return 0;
514 }
515
516 return 1;
517 }
518
519 #if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY)
520 static int _sta(acpi_handle handle)
521 {
522 int status;
523
524 if (!handle || !acpi_evalf(handle, &status, "_STA", "d"))
525 status = 0;
526
527 return status;
528 }
529 #endif
530
531 static int issue_thinkpad_cmos_command(int cmos_cmd)
532 {
533 if (!cmos_handle)
534 return -ENXIO;
535
536 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd))
537 return -EIO;
538
539 return 0;
540 }
541
542 /*************************************************************************
543 * ACPI device model
544 */
545
546 #define TPACPI_ACPIHANDLE_INIT(object) \
547 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \
548 object##_paths, ARRAY_SIZE(object##_paths), &object##_path)
549
550 static void drv_acpi_handle_init(char *name,
551 acpi_handle *handle, acpi_handle parent,
552 char **paths, int num_paths, char **path)
553 {
554 int i;
555 acpi_status status;
556
557 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n",
558 name);
559
560 for (i = 0; i < num_paths; i++) {
561 status = acpi_get_handle(parent, paths[i], handle);
562 if (ACPI_SUCCESS(status)) {
563 *path = paths[i];
564 dbg_printk(TPACPI_DBG_INIT,
565 "Found ACPI handle %s for %s\n",
566 *path, name);
567 return;
568 }
569 }
570
571 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n",
572 name);
573 *handle = NULL;
574 }
575
576 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data)
577 {
578 struct ibm_struct *ibm = data;
579
580 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
581 return;
582
583 if (!ibm || !ibm->acpi || !ibm->acpi->notify)
584 return;
585
586 ibm->acpi->notify(ibm, event);
587 }
588
589 static int __init setup_acpi_notify(struct ibm_struct *ibm)
590 {
591 acpi_status status;
592 int rc;
593
594 BUG_ON(!ibm->acpi);
595
596 if (!*ibm->acpi->handle)
597 return 0;
598
599 vdbg_printk(TPACPI_DBG_INIT,
600 "setting up ACPI notify for %s\n", ibm->name);
601
602 rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device);
603 if (rc < 0) {
604 printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n",
605 ibm->name, rc);
606 return -ENODEV;
607 }
608
609 acpi_driver_data(ibm->acpi->device) = ibm;
610 sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
611 TPACPI_ACPI_EVENT_PREFIX,
612 ibm->name);
613
614 status = acpi_install_notify_handler(*ibm->acpi->handle,
615 ibm->acpi->type, dispatch_acpi_notify, ibm);
616 if (ACPI_FAILURE(status)) {
617 if (status == AE_ALREADY_EXISTS) {
618 printk(TPACPI_NOTICE
619 "another device driver is already "
620 "handling %s events\n", ibm->name);
621 } else {
622 printk(TPACPI_ERR
623 "acpi_install_notify_handler(%s) failed: %d\n",
624 ibm->name, status);
625 }
626 return -ENODEV;
627 }
628 ibm->flags.acpi_notify_installed = 1;
629 return 0;
630 }
631
632 static int __init tpacpi_device_add(struct acpi_device *device)
633 {
634 return 0;
635 }
636
637 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm)
638 {
639 int rc;
640
641 dbg_printk(TPACPI_DBG_INIT,
642 "registering %s as an ACPI driver\n", ibm->name);
643
644 BUG_ON(!ibm->acpi);
645
646 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL);
647 if (!ibm->acpi->driver) {
648 printk(TPACPI_ERR
649 "failed to allocate memory for ibm->acpi->driver\n");
650 return -ENOMEM;
651 }
652
653 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name);
654 ibm->acpi->driver->ids = ibm->acpi->hid;
655
656 ibm->acpi->driver->ops.add = &tpacpi_device_add;
657
658 rc = acpi_bus_register_driver(ibm->acpi->driver);
659 if (rc < 0) {
660 printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n",
661 ibm->name, rc);
662 kfree(ibm->acpi->driver);
663 ibm->acpi->driver = NULL;
664 } else if (!rc)
665 ibm->flags.acpi_driver_registered = 1;
666
667 return rc;
668 }
669
670
671 /****************************************************************************
672 ****************************************************************************
673 *
674 * Procfs Helpers
675 *
676 ****************************************************************************
677 ****************************************************************************/
678
679 static int dispatch_procfs_read(char *page, char **start, off_t off,
680 int count, int *eof, void *data)
681 {
682 struct ibm_struct *ibm = data;
683 int len;
684
685 if (!ibm || !ibm->read)
686 return -EINVAL;
687
688 len = ibm->read(page);
689 if (len < 0)
690 return len;
691
692 if (len <= off + count)
693 *eof = 1;
694 *start = page + off;
695 len -= off;
696 if (len > count)
697 len = count;
698 if (len < 0)
699 len = 0;
700
701 return len;
702 }
703
704 static int dispatch_procfs_write(struct file *file,
705 const char __user *userbuf,
706 unsigned long count, void *data)
707 {
708 struct ibm_struct *ibm = data;
709 char *kernbuf;
710 int ret;
711
712 if (!ibm || !ibm->write)
713 return -EINVAL;
714
715 kernbuf = kmalloc(count + 2, GFP_KERNEL);
716 if (!kernbuf)
717 return -ENOMEM;
718
719 if (copy_from_user(kernbuf, userbuf, count)) {
720 kfree(kernbuf);
721 return -EFAULT;
722 }
723
724 kernbuf[count] = 0;
725 strcat(kernbuf, ",");
726 ret = ibm->write(kernbuf);
727 if (ret == 0)
728 ret = count;
729
730 kfree(kernbuf);
731
732 return ret;
733 }
734
735 static char *next_cmd(char **cmds)
736 {
737 char *start = *cmds;
738 char *end;
739
740 while ((end = strchr(start, ',')) && end == start)
741 start = end + 1;
742
743 if (!end)
744 return NULL;
745
746 *end = 0;
747 *cmds = end + 1;
748 return start;
749 }
750
751
752 /****************************************************************************
753 ****************************************************************************
754 *
755 * Device model: input, hwmon and platform
756 *
757 ****************************************************************************
758 ****************************************************************************/
759
760 static struct platform_device *tpacpi_pdev;
761 static struct platform_device *tpacpi_sensors_pdev;
762 static struct device *tpacpi_hwmon;
763 static struct input_dev *tpacpi_inputdev;
764 static struct mutex tpacpi_inputdev_send_mutex;
765 static LIST_HEAD(tpacpi_all_drivers);
766
767 static int tpacpi_suspend_handler(struct platform_device *pdev,
768 pm_message_t state)
769 {
770 struct ibm_struct *ibm, *itmp;
771
772 list_for_each_entry_safe(ibm, itmp,
773 &tpacpi_all_drivers,
774 all_drivers) {
775 if (ibm->suspend)
776 (ibm->suspend)(state);
777 }
778
779 return 0;
780 }
781
782 static int tpacpi_resume_handler(struct platform_device *pdev)
783 {
784 struct ibm_struct *ibm, *itmp;
785
786 list_for_each_entry_safe(ibm, itmp,
787 &tpacpi_all_drivers,
788 all_drivers) {
789 if (ibm->resume)
790 (ibm->resume)();
791 }
792
793 return 0;
794 }
795
796 static void tpacpi_shutdown_handler(struct platform_device *pdev)
797 {
798 struct ibm_struct *ibm, *itmp;
799
800 list_for_each_entry_safe(ibm, itmp,
801 &tpacpi_all_drivers,
802 all_drivers) {
803 if (ibm->shutdown)
804 (ibm->shutdown)();
805 }
806 }
807
808 static struct platform_driver tpacpi_pdriver = {
809 .driver = {
810 .name = TPACPI_DRVR_NAME,
811 .owner = THIS_MODULE,
812 },
813 .suspend = tpacpi_suspend_handler,
814 .resume = tpacpi_resume_handler,
815 .shutdown = tpacpi_shutdown_handler,
816 };
817
818 static struct platform_driver tpacpi_hwmon_pdriver = {
819 .driver = {
820 .name = TPACPI_HWMON_DRVR_NAME,
821 .owner = THIS_MODULE,
822 },
823 };
824
825 /*************************************************************************
826 * sysfs support helpers
827 */
828
829 struct attribute_set {
830 unsigned int members, max_members;
831 struct attribute_group group;
832 };
833
834 struct attribute_set_obj {
835 struct attribute_set s;
836 struct attribute *a;
837 } __attribute__((packed));
838
839 static struct attribute_set *create_attr_set(unsigned int max_members,
840 const char *name)
841 {
842 struct attribute_set_obj *sobj;
843
844 if (max_members == 0)
845 return NULL;
846
847 /* Allocates space for implicit NULL at the end too */
848 sobj = kzalloc(sizeof(struct attribute_set_obj) +
849 max_members * sizeof(struct attribute *),
850 GFP_KERNEL);
851 if (!sobj)
852 return NULL;
853 sobj->s.max_members = max_members;
854 sobj->s.group.attrs = &sobj->a;
855 sobj->s.group.name = name;
856
857 return &sobj->s;
858 }
859
860 #define destroy_attr_set(_set) \
861 kfree(_set);
862
863 /* not multi-threaded safe, use it in a single thread per set */
864 static int add_to_attr_set(struct attribute_set *s, struct attribute *attr)
865 {
866 if (!s || !attr)
867 return -EINVAL;
868
869 if (s->members >= s->max_members)
870 return -ENOMEM;
871
872 s->group.attrs[s->members] = attr;
873 s->members++;
874
875 return 0;
876 }
877
878 static int add_many_to_attr_set(struct attribute_set *s,
879 struct attribute **attr,
880 unsigned int count)
881 {
882 int i, res;
883
884 for (i = 0; i < count; i++) {
885 res = add_to_attr_set(s, attr[i]);
886 if (res)
887 return res;
888 }
889
890 return 0;
891 }
892
893 static void delete_attr_set(struct attribute_set *s, struct kobject *kobj)
894 {
895 sysfs_remove_group(kobj, &s->group);
896 destroy_attr_set(s);
897 }
898
899 #define register_attr_set_with_sysfs(_attr_set, _kobj) \
900 sysfs_create_group(_kobj, &_attr_set->group)
901
902 static int parse_strtoul(const char *buf,
903 unsigned long max, unsigned long *value)
904 {
905 char *endp;
906
907 while (*buf && isspace(*buf))
908 buf++;
909 *value = simple_strtoul(buf, &endp, 0);
910 while (*endp && isspace(*endp))
911 endp++;
912 if (*endp || *value > max)
913 return -EINVAL;
914
915 return 0;
916 }
917
918 static void tpacpi_disable_brightness_delay(void)
919 {
920 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0))
921 printk(TPACPI_NOTICE
922 "ACPI backlight control delay disabled\n");
923 }
924
925 static int __init tpacpi_query_bcl_levels(acpi_handle handle)
926 {
927 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
928 union acpi_object *obj;
929 int rc;
930
931 if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) {
932 obj = (union acpi_object *)buffer.pointer;
933 if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
934 printk(TPACPI_ERR "Unknown _BCL data, "
935 "please report this to %s\n", TPACPI_MAIL);
936 rc = 0;
937 } else {
938 rc = obj->package.count;
939 }
940 } else {
941 return 0;
942 }
943
944 kfree(buffer.pointer);
945 return rc;
946 }
947
948 static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle,
949 u32 lvl, void *context, void **rv)
950 {
951 char name[ACPI_PATH_SEGMENT_LENGTH];
952 struct acpi_buffer buffer = { sizeof(name), &name };
953
954 if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) &&
955 !strncmp("_BCL", name, sizeof(name) - 1)) {
956 BUG_ON(!rv || !*rv);
957 **(int **)rv = tpacpi_query_bcl_levels(handle);
958 return AE_CTRL_TERMINATE;
959 } else {
960 return AE_OK;
961 }
962 }
963
964 /*
965 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map
966 */
967 static int __init tpacpi_check_std_acpi_brightness_support(void)
968 {
969 int status;
970 int bcl_levels = 0;
971 void *bcl_ptr = &bcl_levels;
972
973 if (!vid_handle) {
974 TPACPI_ACPIHANDLE_INIT(vid);
975 }
976 if (!vid_handle)
977 return 0;
978
979 /*
980 * Search for a _BCL method, and execute it. This is safe on all
981 * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista
982 * BIOS in ACPI backlight control mode. We do NOT have to care
983 * about calling the _BCL method in an enabled video device, any
984 * will do for our purposes.
985 */
986
987 status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3,
988 tpacpi_acpi_walk_find_bcl, NULL,
989 &bcl_ptr);
990
991 if (ACPI_SUCCESS(status) && bcl_levels > 2) {
992 tp_features.bright_acpimode = 1;
993 return (bcl_levels - 2);
994 }
995
996 return 0;
997 }
998
999 static int __init tpacpi_new_rfkill(const unsigned int id,
1000 struct rfkill **rfk,
1001 const enum rfkill_type rfktype,
1002 const char *name,
1003 const bool set_default,
1004 int (*toggle_radio)(void *, enum rfkill_state),
1005 int (*get_state)(void *, enum rfkill_state *))
1006 {
1007 int res;
1008 enum rfkill_state initial_state = RFKILL_STATE_SOFT_BLOCKED;
1009
1010 res = get_state(NULL, &initial_state);
1011 if (res < 0) {
1012 printk(TPACPI_ERR
1013 "failed to read initial state for %s, error %d; "
1014 "will turn radio off\n", name, res);
1015 } else if (set_default) {
1016 /* try to set the initial state as the default for the rfkill
1017 * type, since we ask the firmware to preserve it across S5 in
1018 * NVRAM */
1019 rfkill_set_default(rfktype,
1020 (initial_state == RFKILL_STATE_UNBLOCKED) ?
1021 RFKILL_STATE_UNBLOCKED :
1022 RFKILL_STATE_SOFT_BLOCKED);
1023 }
1024
1025 *rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype);
1026 if (!*rfk) {
1027 printk(TPACPI_ERR
1028 "failed to allocate memory for rfkill class\n");
1029 return -ENOMEM;
1030 }
1031
1032 (*rfk)->name = name;
1033 (*rfk)->get_state = get_state;
1034 (*rfk)->toggle_radio = toggle_radio;
1035 (*rfk)->state = initial_state;
1036
1037 res = rfkill_register(*rfk);
1038 if (res < 0) {
1039 printk(TPACPI_ERR
1040 "failed to register %s rfkill switch: %d\n",
1041 name, res);
1042 rfkill_free(*rfk);
1043 *rfk = NULL;
1044 return res;
1045 }
1046
1047 return 0;
1048 }
1049
1050 static void printk_deprecated_attribute(const char * const what,
1051 const char * const details)
1052 {
1053 tpacpi_log_usertask("deprecated sysfs attribute");
1054 printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
1055 "will be removed. %s\n",
1056 what, details);
1057 }
1058
1059 static void printk_deprecated_rfkill_attribute(const char * const what)
1060 {
1061 printk_deprecated_attribute(what,
1062 "Please switch to generic rfkill before year 2010");
1063 }
1064
1065 /*************************************************************************
1066 * thinkpad-acpi driver attributes
1067 */
1068
1069 /* interface_version --------------------------------------------------- */
1070 static ssize_t tpacpi_driver_interface_version_show(
1071 struct device_driver *drv,
1072 char *buf)
1073 {
1074 return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION);
1075 }
1076
1077 static DRIVER_ATTR(interface_version, S_IRUGO,
1078 tpacpi_driver_interface_version_show, NULL);
1079
1080 /* debug_level --------------------------------------------------------- */
1081 static ssize_t tpacpi_driver_debug_show(struct device_driver *drv,
1082 char *buf)
1083 {
1084 return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level);
1085 }
1086
1087 static ssize_t tpacpi_driver_debug_store(struct device_driver *drv,
1088 const char *buf, size_t count)
1089 {
1090 unsigned long t;
1091
1092 if (parse_strtoul(buf, 0xffff, &t))
1093 return -EINVAL;
1094
1095 dbg_level = t;
1096
1097 return count;
1098 }
1099
1100 static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO,
1101 tpacpi_driver_debug_show, tpacpi_driver_debug_store);
1102
1103 /* version ------------------------------------------------------------- */
1104 static ssize_t tpacpi_driver_version_show(struct device_driver *drv,
1105 char *buf)
1106 {
1107 return snprintf(buf, PAGE_SIZE, "%s v%s\n",
1108 TPACPI_DESC, TPACPI_VERSION);
1109 }
1110
1111 static DRIVER_ATTR(version, S_IRUGO,
1112 tpacpi_driver_version_show, NULL);
1113
1114 /* --------------------------------------------------------------------- */
1115
1116 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1117
1118 static void tpacpi_send_radiosw_update(void);
1119
1120 /* wlsw_emulstate ------------------------------------------------------ */
1121 static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
1122 char *buf)
1123 {
1124 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wlsw_emulstate);
1125 }
1126
1127 static ssize_t tpacpi_driver_wlsw_emulstate_store(struct device_driver *drv,
1128 const char *buf, size_t count)
1129 {
1130 unsigned long t;
1131
1132 if (parse_strtoul(buf, 1, &t))
1133 return -EINVAL;
1134
1135 if (tpacpi_wlsw_emulstate != t) {
1136 tpacpi_wlsw_emulstate = !!t;
1137 tpacpi_send_radiosw_update();
1138 } else
1139 tpacpi_wlsw_emulstate = !!t;
1140
1141 return count;
1142 }
1143
1144 static DRIVER_ATTR(wlsw_emulstate, S_IWUSR | S_IRUGO,
1145 tpacpi_driver_wlsw_emulstate_show,
1146 tpacpi_driver_wlsw_emulstate_store);
1147
1148 /* bluetooth_emulstate ------------------------------------------------- */
1149 static ssize_t tpacpi_driver_bluetooth_emulstate_show(
1150 struct device_driver *drv,
1151 char *buf)
1152 {
1153 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_bluetooth_emulstate);
1154 }
1155
1156 static ssize_t tpacpi_driver_bluetooth_emulstate_store(
1157 struct device_driver *drv,
1158 const char *buf, size_t count)
1159 {
1160 unsigned long t;
1161
1162 if (parse_strtoul(buf, 1, &t))
1163 return -EINVAL;
1164
1165 tpacpi_bluetooth_emulstate = !!t;
1166
1167 return count;
1168 }
1169
1170 static DRIVER_ATTR(bluetooth_emulstate, S_IWUSR | S_IRUGO,
1171 tpacpi_driver_bluetooth_emulstate_show,
1172 tpacpi_driver_bluetooth_emulstate_store);
1173
1174 /* wwan_emulstate ------------------------------------------------- */
1175 static ssize_t tpacpi_driver_wwan_emulstate_show(
1176 struct device_driver *drv,
1177 char *buf)
1178 {
1179 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_wwan_emulstate);
1180 }
1181
1182 static ssize_t tpacpi_driver_wwan_emulstate_store(
1183 struct device_driver *drv,
1184 const char *buf, size_t count)
1185 {
1186 unsigned long t;
1187
1188 if (parse_strtoul(buf, 1, &t))
1189 return -EINVAL;
1190
1191 tpacpi_wwan_emulstate = !!t;
1192
1193 return count;
1194 }
1195
1196 static DRIVER_ATTR(wwan_emulstate, S_IWUSR | S_IRUGO,
1197 tpacpi_driver_wwan_emulstate_show,
1198 tpacpi_driver_wwan_emulstate_store);
1199
1200 /* uwb_emulstate ------------------------------------------------- */
1201 static ssize_t tpacpi_driver_uwb_emulstate_show(
1202 struct device_driver *drv,
1203 char *buf)
1204 {
1205 return snprintf(buf, PAGE_SIZE, "%d\n", !!tpacpi_uwb_emulstate);
1206 }
1207
1208 static ssize_t tpacpi_driver_uwb_emulstate_store(
1209 struct device_driver *drv,
1210 const char *buf, size_t count)
1211 {
1212 unsigned long t;
1213
1214 if (parse_strtoul(buf, 1, &t))
1215 return -EINVAL;
1216
1217 tpacpi_uwb_emulstate = !!t;
1218
1219 return count;
1220 }
1221
1222 static DRIVER_ATTR(uwb_emulstate, S_IWUSR | S_IRUGO,
1223 tpacpi_driver_uwb_emulstate_show,
1224 tpacpi_driver_uwb_emulstate_store);
1225 #endif
1226
1227 /* --------------------------------------------------------------------- */
1228
1229 static struct driver_attribute *tpacpi_driver_attributes[] = {
1230 &driver_attr_debug_level, &driver_attr_version,
1231 &driver_attr_interface_version,
1232 };
1233
1234 static int __init tpacpi_create_driver_attributes(struct device_driver *drv)
1235 {
1236 int i, res;
1237
1238 i = 0;
1239 res = 0;
1240 while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) {
1241 res = driver_create_file(drv, tpacpi_driver_attributes[i]);
1242 i++;
1243 }
1244
1245 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1246 if (!res && dbg_wlswemul)
1247 res = driver_create_file(drv, &driver_attr_wlsw_emulstate);
1248 if (!res && dbg_bluetoothemul)
1249 res = driver_create_file(drv, &driver_attr_bluetooth_emulstate);
1250 if (!res && dbg_wwanemul)
1251 res = driver_create_file(drv, &driver_attr_wwan_emulstate);
1252 if (!res && dbg_uwbemul)
1253 res = driver_create_file(drv, &driver_attr_uwb_emulstate);
1254 #endif
1255
1256 return res;
1257 }
1258
1259 static void tpacpi_remove_driver_attributes(struct device_driver *drv)
1260 {
1261 int i;
1262
1263 for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++)
1264 driver_remove_file(drv, tpacpi_driver_attributes[i]);
1265
1266 #ifdef THINKPAD_ACPI_DEBUGFACILITIES
1267 driver_remove_file(drv, &driver_attr_wlsw_emulstate);
1268 driver_remove_file(drv, &driver_attr_bluetooth_emulstate);
1269 driver_remove_file(drv, &driver_attr_wwan_emulstate);
1270 driver_remove_file(drv, &driver_attr_uwb_emulstate);
1271 #endif
1272 }
1273
1274 /****************************************************************************
1275 ****************************************************************************
1276 *
1277 * Subdrivers
1278 *
1279 ****************************************************************************
1280 ****************************************************************************/
1281
1282 /*************************************************************************
1283 * thinkpad-acpi init subdriver
1284 */
1285
1286 static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm)
1287 {
1288 printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION);
1289 printk(TPACPI_INFO "%s\n", TPACPI_URL);
1290
1291 printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n",
1292 (thinkpad_id.bios_version_str) ?
1293 thinkpad_id.bios_version_str : "unknown",
1294 (thinkpad_id.ec_version_str) ?
1295 thinkpad_id.ec_version_str : "unknown");
1296
1297 if (thinkpad_id.vendor && thinkpad_id.model_str)
1298 printk(TPACPI_INFO "%s %s, model %s\n",
1299 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ?
1300 "IBM" : ((thinkpad_id.vendor ==
1301 PCI_VENDOR_ID_LENOVO) ?
1302 "Lenovo" : "Unknown vendor"),
1303 thinkpad_id.model_str,
1304 (thinkpad_id.nummodel_str) ?
1305 thinkpad_id.nummodel_str : "unknown");
1306
1307 return 0;
1308 }
1309
1310 static int thinkpad_acpi_driver_read(char *p)
1311 {
1312 int len = 0;
1313
1314 len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC);
1315 len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION);
1316
1317 return len;
1318 }
1319
1320 static struct ibm_struct thinkpad_acpi_driver_data = {
1321 .name = "driver",
1322 .read = thinkpad_acpi_driver_read,
1323 };
1324
1325 /*************************************************************************
1326 * Hotkey subdriver
1327 */
1328
1329 enum { /* hot key scan codes (derived from ACPI DSDT) */
1330 TP_ACPI_HOTKEYSCAN_FNF1 = 0,
1331 TP_ACPI_HOTKEYSCAN_FNF2,
1332 TP_ACPI_HOTKEYSCAN_FNF3,
1333 TP_ACPI_HOTKEYSCAN_FNF4,
1334 TP_ACPI_HOTKEYSCAN_FNF5,
1335 TP_ACPI_HOTKEYSCAN_FNF6,
1336 TP_ACPI_HOTKEYSCAN_FNF7,
1337 TP_ACPI_HOTKEYSCAN_FNF8,
1338 TP_ACPI_HOTKEYSCAN_FNF9,
1339 TP_ACPI_HOTKEYSCAN_FNF10,
1340 TP_ACPI_HOTKEYSCAN_FNF11,
1341 TP_ACPI_HOTKEYSCAN_FNF12,
1342 TP_ACPI_HOTKEYSCAN_FNBACKSPACE,
1343 TP_ACPI_HOTKEYSCAN_FNINSERT,
1344 TP_ACPI_HOTKEYSCAN_FNDELETE,
1345 TP_ACPI_HOTKEYSCAN_FNHOME,
1346 TP_ACPI_HOTKEYSCAN_FNEND,
1347 TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1348 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN,
1349 TP_ACPI_HOTKEYSCAN_FNSPACE,
1350 TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1351 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1352 TP_ACPI_HOTKEYSCAN_MUTE,
1353 TP_ACPI_HOTKEYSCAN_THINKPAD,
1354 };
1355
1356 enum { /* Keys available through NVRAM polling */
1357 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U,
1358 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U,
1359 };
1360
1361 enum { /* Positions of some of the keys in hotkey masks */
1362 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7,
1363 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8,
1364 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12,
1365 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME,
1366 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND,
1367 TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP,
1368 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE,
1369 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP,
1370 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN,
1371 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE,
1372 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD,
1373 };
1374
1375 enum { /* NVRAM to ACPI HKEY group map */
1376 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK |
1377 TP_ACPI_HKEY_ZOOM_MASK |
1378 TP_ACPI_HKEY_DISPSWTCH_MASK |
1379 TP_ACPI_HKEY_HIBERNATE_MASK,
1380 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK |
1381 TP_ACPI_HKEY_BRGHTDWN_MASK,
1382 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK |
1383 TP_ACPI_HKEY_VOLDWN_MASK |
1384 TP_ACPI_HKEY_MUTE_MASK,
1385 };
1386
1387 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1388 struct tp_nvram_state {
1389 u16 thinkpad_toggle:1;
1390 u16 zoom_toggle:1;
1391 u16 display_toggle:1;
1392 u16 thinklight_toggle:1;
1393 u16 hibernate_toggle:1;
1394 u16 displayexp_toggle:1;
1395 u16 display_state:1;
1396 u16 brightness_toggle:1;
1397 u16 volume_toggle:1;
1398 u16 mute:1;
1399
1400 u8 brightness_level;
1401 u8 volume_level;
1402 };
1403
1404 static struct task_struct *tpacpi_hotkey_task;
1405 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */
1406 static int hotkey_poll_freq = 10; /* Hz */
1407 static struct mutex hotkey_thread_mutex;
1408 static struct mutex hotkey_thread_data_mutex;
1409 static unsigned int hotkey_config_change;
1410
1411 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1412
1413 #define hotkey_source_mask 0U
1414
1415 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1416
1417 static struct mutex hotkey_mutex;
1418
1419 static enum { /* Reasons for waking up */
1420 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */
1421 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */
1422 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */
1423 } hotkey_wakeup_reason;
1424
1425 static int hotkey_autosleep_ack;
1426
1427 static int hotkey_orig_status;
1428 static u32 hotkey_orig_mask;
1429 static u32 hotkey_all_mask;
1430 static u32 hotkey_reserved_mask;
1431 static u32 hotkey_mask;
1432
1433 static unsigned int hotkey_report_mode;
1434
1435 static u16 *hotkey_keycode_map;
1436
1437 static struct attribute_set *hotkey_dev_attributes;
1438
1439 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1440 #define HOTKEY_CONFIG_CRITICAL_START \
1441 do { \
1442 mutex_lock(&hotkey_thread_data_mutex); \
1443 hotkey_config_change++; \
1444 } while (0);
1445 #define HOTKEY_CONFIG_CRITICAL_END \
1446 mutex_unlock(&hotkey_thread_data_mutex);
1447 #else
1448 #define HOTKEY_CONFIG_CRITICAL_START
1449 #define HOTKEY_CONFIG_CRITICAL_END
1450 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1451
1452 /* HKEY.MHKG() return bits */
1453 #define TP_HOTKEY_TABLET_MASK (1 << 3)
1454
1455 static int hotkey_get_wlsw(int *status)
1456 {
1457 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
1458 if (dbg_wlswemul) {
1459 *status = !!tpacpi_wlsw_emulstate;
1460 return 0;
1461 }
1462 #endif
1463 if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
1464 return -EIO;
1465 return 0;
1466 }
1467
1468 static int hotkey_get_tablet_mode(int *status)
1469 {
1470 int s;
1471
1472 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d"))
1473 return -EIO;
1474
1475 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0);
1476 return 0;
1477 }
1478
1479 /*
1480 * Call with hotkey_mutex held
1481 */
1482 static int hotkey_mask_get(void)
1483 {
1484 u32 m = 0;
1485
1486 if (tp_features.hotkey_mask) {
1487 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d"))
1488 return -EIO;
1489 }
1490 hotkey_mask = m | (hotkey_source_mask & hotkey_mask);
1491
1492 return 0;
1493 }
1494
1495 /*
1496 * Call with hotkey_mutex held
1497 */
1498 static int hotkey_mask_set(u32 mask)
1499 {
1500 int i;
1501 int rc = 0;
1502
1503 if (tp_features.hotkey_mask) {
1504 if (!tp_warned.hotkey_mask_ff &&
1505 (mask == 0xffff || mask == 0xffffff ||
1506 mask == 0xffffffff)) {
1507 tp_warned.hotkey_mask_ff = 1;
1508 printk(TPACPI_NOTICE
1509 "setting the hotkey mask to 0x%08x is likely "
1510 "not the best way to go about it\n", mask);
1511 printk(TPACPI_NOTICE
1512 "please consider using the driver defaults, "
1513 "and refer to up-to-date thinkpad-acpi "
1514 "documentation\n");
1515 }
1516
1517 HOTKEY_CONFIG_CRITICAL_START
1518 for (i = 0; i < 32; i++) {
1519 u32 m = 1 << i;
1520 /* enable in firmware mask only keys not in NVRAM
1521 * mode, but enable the key in the cached hotkey_mask
1522 * regardless of mode, or the key will end up
1523 * disabled by hotkey_mask_get() */
1524 if (!acpi_evalf(hkey_handle,
1525 NULL, "MHKM", "vdd", i + 1,
1526 !!((mask & ~hotkey_source_mask) & m))) {
1527 rc = -EIO;
1528 break;
1529 } else {
1530 hotkey_mask = (hotkey_mask & ~m) | (mask & m);
1531 }
1532 }
1533 HOTKEY_CONFIG_CRITICAL_END
1534
1535 /* hotkey_mask_get must be called unconditionally below */
1536 if (!hotkey_mask_get() && !rc &&
1537 (hotkey_mask & ~hotkey_source_mask) !=
1538 (mask & ~hotkey_source_mask)) {
1539 printk(TPACPI_NOTICE
1540 "requested hot key mask 0x%08x, but "
1541 "firmware forced it to 0x%08x\n",
1542 mask, hotkey_mask);
1543 }
1544 } else {
1545 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1546 HOTKEY_CONFIG_CRITICAL_START
1547 hotkey_mask = mask & hotkey_source_mask;
1548 HOTKEY_CONFIG_CRITICAL_END
1549 hotkey_mask_get();
1550 if (hotkey_mask != mask) {
1551 printk(TPACPI_NOTICE
1552 "requested hot key mask 0x%08x, "
1553 "forced to 0x%08x (NVRAM poll mask is "
1554 "0x%08x): no firmware mask support\n",
1555 mask, hotkey_mask, hotkey_source_mask);
1556 }
1557 #else
1558 hotkey_mask_get();
1559 rc = -ENXIO;
1560 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1561 }
1562
1563 return rc;
1564 }
1565
1566 static int hotkey_status_get(int *status)
1567 {
1568 if (!acpi_evalf(hkey_handle, status, "DHKC", "d"))
1569 return -EIO;
1570
1571 return 0;
1572 }
1573
1574 static int hotkey_status_set(int status)
1575 {
1576 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status))
1577 return -EIO;
1578
1579 return 0;
1580 }
1581
1582 static void tpacpi_input_send_tabletsw(void)
1583 {
1584 int state;
1585
1586 if (tp_features.hotkey_tablet &&
1587 !hotkey_get_tablet_mode(&state)) {
1588 mutex_lock(&tpacpi_inputdev_send_mutex);
1589
1590 input_report_switch(tpacpi_inputdev,
1591 SW_TABLET_MODE, !!state);
1592 input_sync(tpacpi_inputdev);
1593
1594 mutex_unlock(&tpacpi_inputdev_send_mutex);
1595 }
1596 }
1597
1598 static void tpacpi_input_send_key(unsigned int scancode)
1599 {
1600 unsigned int keycode;
1601
1602 keycode = hotkey_keycode_map[scancode];
1603
1604 if (keycode != KEY_RESERVED) {
1605 mutex_lock(&tpacpi_inputdev_send_mutex);
1606
1607 input_report_key(tpacpi_inputdev, keycode, 1);
1608 if (keycode == KEY_UNKNOWN)
1609 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1610 scancode);
1611 input_sync(tpacpi_inputdev);
1612
1613 input_report_key(tpacpi_inputdev, keycode, 0);
1614 if (keycode == KEY_UNKNOWN)
1615 input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN,
1616 scancode);
1617 input_sync(tpacpi_inputdev);
1618
1619 mutex_unlock(&tpacpi_inputdev_send_mutex);
1620 }
1621 }
1622
1623 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1624 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver;
1625
1626 static void tpacpi_hotkey_send_key(unsigned int scancode)
1627 {
1628 tpacpi_input_send_key(scancode);
1629 if (hotkey_report_mode < 2) {
1630 acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device,
1631 0x80, 0x1001 + scancode);
1632 }
1633 }
1634
1635 static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m)
1636 {
1637 u8 d;
1638
1639 if (m & TP_NVRAM_HKEY_GROUP_HK2) {
1640 d = nvram_read_byte(TP_NVRAM_ADDR_HK2);
1641 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD);
1642 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM);
1643 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY);
1644 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE);
1645 }
1646 if (m & TP_ACPI_HKEY_THNKLGHT_MASK) {
1647 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT);
1648 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT);
1649 }
1650 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) {
1651 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO);
1652 n->displayexp_toggle =
1653 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND);
1654 }
1655 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) {
1656 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS);
1657 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
1658 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
1659 n->brightness_toggle =
1660 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS);
1661 }
1662 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) {
1663 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER);
1664 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME)
1665 >> TP_NVRAM_POS_LEVEL_VOLUME;
1666 n->mute = !!(d & TP_NVRAM_MASK_MUTE);
1667 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME);
1668 }
1669 }
1670
1671 #define TPACPI_COMPARE_KEY(__scancode, __member) \
1672 do { \
1673 if ((mask & (1 << __scancode)) && \
1674 oldn->__member != newn->__member) \
1675 tpacpi_hotkey_send_key(__scancode); \
1676 } while (0)
1677
1678 #define TPACPI_MAY_SEND_KEY(__scancode) \
1679 do { if (mask & (1 << __scancode)) \
1680 tpacpi_hotkey_send_key(__scancode); } while (0)
1681
1682 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
1683 struct tp_nvram_state *newn,
1684 u32 mask)
1685 {
1686 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle);
1687 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle);
1688 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle);
1689 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle);
1690
1691 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle);
1692
1693 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle);
1694
1695 /* handle volume */
1696 if (oldn->volume_toggle != newn->volume_toggle) {
1697 if (oldn->mute != newn->mute) {
1698 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1699 }
1700 if (oldn->volume_level > newn->volume_level) {
1701 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1702 } else if (oldn->volume_level < newn->volume_level) {
1703 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1704 } else if (oldn->mute == newn->mute) {
1705 /* repeated key presses that didn't change state */
1706 if (newn->mute) {
1707 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE);
1708 } else if (newn->volume_level != 0) {
1709 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP);
1710 } else {
1711 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN);
1712 }
1713 }
1714 }
1715
1716 /* handle brightness */
1717 if (oldn->brightness_toggle != newn->brightness_toggle) {
1718 if (oldn->brightness_level < newn->brightness_level) {
1719 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1720 } else if (oldn->brightness_level > newn->brightness_level) {
1721 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1722 } else {
1723 /* repeated key presses that didn't change state */
1724 if (newn->brightness_level != 0) {
1725 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
1726 } else {
1727 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND);
1728 }
1729 }
1730 }
1731 }
1732
1733 #undef TPACPI_COMPARE_KEY
1734 #undef TPACPI_MAY_SEND_KEY
1735
1736 static int hotkey_kthread(void *data)
1737 {
1738 struct tp_nvram_state s[2];
1739 u32 mask;
1740 unsigned int si, so;
1741 unsigned long t;
1742 unsigned int change_detector, must_reset;
1743
1744 mutex_lock(&hotkey_thread_mutex);
1745
1746 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING)
1747 goto exit;
1748
1749 set_freezable();
1750
1751 so = 0;
1752 si = 1;
1753 t = 0;
1754
1755 /* Initial state for compares */
1756 mutex_lock(&hotkey_thread_data_mutex);
1757 change_detector = hotkey_config_change;
1758 mask = hotkey_source_mask & hotkey_mask;
1759 mutex_unlock(&hotkey_thread_data_mutex);
1760 hotkey_read_nvram(&s[so], mask);
1761
1762 while (!kthread_should_stop() && hotkey_poll_freq) {
1763 if (t == 0)
1764 t = 1000/hotkey_poll_freq;
1765 t = msleep_interruptible(t);
1766 if (unlikely(kthread_should_stop()))
1767 break;
1768 must_reset = try_to_freeze();
1769 if (t > 0 && !must_reset)
1770 continue;
1771
1772 mutex_lock(&hotkey_thread_data_mutex);
1773 if (must_reset || hotkey_config_change != change_detector) {
1774 /* forget old state on thaw or config change */
1775 si = so;
1776 t = 0;
1777 change_detector = hotkey_config_change;
1778 }
1779 mask = hotkey_source_mask & hotkey_mask;
1780 mutex_unlock(&hotkey_thread_data_mutex);
1781
1782 if (likely(mask)) {
1783 hotkey_read_nvram(&s[si], mask);
1784 if (likely(si != so)) {
1785 hotkey_compare_and_issue_event(&s[so], &s[si],
1786 mask);
1787 }
1788 }
1789
1790 so = si;
1791 si ^= 1;
1792 }
1793
1794 exit:
1795 mutex_unlock(&hotkey_thread_mutex);
1796 return 0;
1797 }
1798
1799 static void hotkey_poll_stop_sync(void)
1800 {
1801 if (tpacpi_hotkey_task) {
1802 if (frozen(tpacpi_hotkey_task) ||
1803 freezing(tpacpi_hotkey_task))
1804 thaw_process(tpacpi_hotkey_task);
1805
1806 kthread_stop(tpacpi_hotkey_task);
1807 tpacpi_hotkey_task = NULL;
1808 mutex_lock(&hotkey_thread_mutex);
1809 /* at this point, the thread did exit */
1810 mutex_unlock(&hotkey_thread_mutex);
1811 }
1812 }
1813
1814 /* call with hotkey_mutex held */
1815 static void hotkey_poll_setup(int may_warn)
1816 {
1817 if ((hotkey_source_mask & hotkey_mask) != 0 &&
1818 hotkey_poll_freq > 0 &&
1819 (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) {
1820 if (!tpacpi_hotkey_task) {
1821 tpacpi_hotkey_task = kthread_run(hotkey_kthread,
1822 NULL, TPACPI_NVRAM_KTHREAD_NAME);
1823 if (IS_ERR(tpacpi_hotkey_task)) {
1824 tpacpi_hotkey_task = NULL;
1825 printk(TPACPI_ERR
1826 "could not create kernel thread "
1827 "for hotkey polling\n");
1828 }
1829 }
1830 } else {
1831 hotkey_poll_stop_sync();
1832 if (may_warn &&
1833 hotkey_source_mask != 0 && hotkey_poll_freq == 0) {
1834 printk(TPACPI_NOTICE
1835 "hot keys 0x%08x require polling, "
1836 "which is currently disabled\n",
1837 hotkey_source_mask);
1838 }
1839 }
1840 }
1841
1842 static void hotkey_poll_setup_safe(int may_warn)
1843 {
1844 mutex_lock(&hotkey_mutex);
1845 hotkey_poll_setup(may_warn);
1846 mutex_unlock(&hotkey_mutex);
1847 }
1848
1849 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1850
1851 static void hotkey_poll_setup_safe(int __unused)
1852 {
1853 }
1854
1855 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
1856
1857 static int hotkey_inputdev_open(struct input_dev *dev)
1858 {
1859 switch (tpacpi_lifecycle) {
1860 case TPACPI_LIFE_INIT:
1861 /*
1862 * hotkey_init will call hotkey_poll_setup_safe
1863 * at the appropriate moment
1864 */
1865 return 0;
1866 case TPACPI_LIFE_EXITING:
1867 return -EBUSY;
1868 case TPACPI_LIFE_RUNNING:
1869 hotkey_poll_setup_safe(0);
1870 return 0;
1871 }
1872
1873 /* Should only happen if tpacpi_lifecycle is corrupt */
1874 BUG();
1875 return -EBUSY;
1876 }
1877
1878 static void hotkey_inputdev_close(struct input_dev *dev)
1879 {
1880 /* disable hotkey polling when possible */
1881 if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING)
1882 hotkey_poll_setup_safe(0);
1883 }
1884
1885 /* sysfs hotkey enable ------------------------------------------------- */
1886 static ssize_t hotkey_enable_show(struct device *dev,
1887 struct device_attribute *attr,
1888 char *buf)
1889 {
1890 int res, status;
1891
1892 res = hotkey_status_get(&status);
1893 if (res)
1894 return res;
1895
1896 return snprintf(buf, PAGE_SIZE, "%d\n", status);
1897 }
1898
1899 static ssize_t hotkey_enable_store(struct device *dev,
1900 struct device_attribute *attr,
1901 const char *buf, size_t count)
1902 {
1903 unsigned long t;
1904 int res;
1905
1906 if (parse_strtoul(buf, 1, &t))
1907 return -EINVAL;
1908
1909 res = hotkey_status_set(t);
1910
1911 return (res) ? res : count;
1912 }
1913
1914 static struct device_attribute dev_attr_hotkey_enable =
1915 __ATTR(hotkey_enable, S_IWUSR | S_IRUGO,
1916 hotkey_enable_show, hotkey_enable_store);
1917
1918 /* sysfs hotkey mask --------------------------------------------------- */
1919 static ssize_t hotkey_mask_show(struct device *dev,
1920 struct device_attribute *attr,
1921 char *buf)
1922 {
1923 int res;
1924
1925 if (mutex_lock_killable(&hotkey_mutex))
1926 return -ERESTARTSYS;
1927 res = hotkey_mask_get();
1928 mutex_unlock(&hotkey_mutex);
1929
1930 return (res)?
1931 res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask);
1932 }
1933
1934 static ssize_t hotkey_mask_store(struct device *dev,
1935 struct device_attribute *attr,
1936 const char *buf, size_t count)
1937 {
1938 unsigned long t;
1939 int res;
1940
1941 if (parse_strtoul(buf, 0xffffffffUL, &t))
1942 return -EINVAL;
1943
1944 if (mutex_lock_killable(&hotkey_mutex))
1945 return -ERESTARTSYS;
1946
1947 res = hotkey_mask_set(t);
1948
1949 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
1950 hotkey_poll_setup(1);
1951 #endif
1952
1953 mutex_unlock(&hotkey_mutex);
1954
1955 return (res) ? res : count;
1956 }
1957
1958 static struct device_attribute dev_attr_hotkey_mask =
1959 __ATTR(hotkey_mask, S_IWUSR | S_IRUGO,
1960 hotkey_mask_show, hotkey_mask_store);
1961
1962 /* sysfs hotkey bios_enabled ------------------------------------------- */
1963 static ssize_t hotkey_bios_enabled_show(struct device *dev,
1964 struct device_attribute *attr,
1965 char *buf)
1966 {
1967 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status);
1968 }
1969
1970 static struct device_attribute dev_attr_hotkey_bios_enabled =
1971 __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL);
1972
1973 /* sysfs hotkey bios_mask ---------------------------------------------- */
1974 static ssize_t hotkey_bios_mask_show(struct device *dev,
1975 struct device_attribute *attr,
1976 char *buf)
1977 {
1978 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask);
1979 }
1980
1981 static struct device_attribute dev_attr_hotkey_bios_mask =
1982 __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL);
1983
1984 /* sysfs hotkey all_mask ----------------------------------------------- */
1985 static ssize_t hotkey_all_mask_show(struct device *dev,
1986 struct device_attribute *attr,
1987 char *buf)
1988 {
1989 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
1990 hotkey_all_mask | hotkey_source_mask);
1991 }
1992
1993 static struct device_attribute dev_attr_hotkey_all_mask =
1994 __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL);
1995
1996 /* sysfs hotkey recommended_mask --------------------------------------- */
1997 static ssize_t hotkey_recommended_mask_show(struct device *dev,
1998 struct device_attribute *attr,
1999 char *buf)
2000 {
2001 return snprintf(buf, PAGE_SIZE, "0x%08x\n",
2002 (hotkey_all_mask | hotkey_source_mask)
2003 & ~hotkey_reserved_mask);
2004 }
2005
2006 static struct device_attribute dev_attr_hotkey_recommended_mask =
2007 __ATTR(hotkey_recommended_mask, S_IRUGO,
2008 hotkey_recommended_mask_show, NULL);
2009
2010 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2011
2012 /* sysfs hotkey hotkey_source_mask ------------------------------------- */
2013 static ssize_t hotkey_source_mask_show(struct device *dev,
2014 struct device_attribute *attr,
2015 char *buf)
2016 {
2017 return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask);
2018 }
2019
2020 static ssize_t hotkey_source_mask_store(struct device *dev,
2021 struct device_attribute *attr,
2022 const char *buf, size_t count)
2023 {
2024 unsigned long t;
2025
2026 if (parse_strtoul(buf, 0xffffffffUL, &t) ||
2027 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
2028 return -EINVAL;
2029
2030 if (mutex_lock_killable(&hotkey_mutex))
2031 return -ERESTARTSYS;
2032
2033 HOTKEY_CONFIG_CRITICAL_START
2034 hotkey_source_mask = t;
2035 HOTKEY_CONFIG_CRITICAL_END
2036
2037 hotkey_poll_setup(1);
2038
2039 mutex_unlock(&hotkey_mutex);
2040
2041 return count;
2042 }
2043
2044 static struct device_attribute dev_attr_hotkey_source_mask =
2045 __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO,
2046 hotkey_source_mask_show, hotkey_source_mask_store);
2047
2048 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */
2049 static ssize_t hotkey_poll_freq_show(struct device *dev,
2050 struct device_attribute *attr,
2051 char *buf)
2052 {
2053 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq);
2054 }
2055
2056 static ssize_t hotkey_poll_freq_store(struct device *dev,
2057 struct device_attribute *attr,
2058 const char *buf, size_t count)
2059 {
2060 unsigned long t;
2061
2062 if (parse_strtoul(buf, 25, &t))
2063 return -EINVAL;
2064
2065 if (mutex_lock_killable(&hotkey_mutex))
2066 return -ERESTARTSYS;
2067
2068 hotkey_poll_freq = t;
2069
2070 hotkey_poll_setup(1);
2071 mutex_unlock(&hotkey_mutex);
2072
2073 return count;
2074 }
2075
2076 static struct device_attribute dev_attr_hotkey_poll_freq =
2077 __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO,
2078 hotkey_poll_freq_show, hotkey_poll_freq_store);
2079
2080 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */
2081
2082 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */
2083 static ssize_t hotkey_radio_sw_show(struct device *dev,
2084 struct device_attribute *attr,
2085 char *buf)
2086 {
2087 int res, s;
2088 res = hotkey_get_wlsw(&s);
2089 if (res < 0)
2090 return res;
2091
2092 return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
2093 }
2094
2095 static struct device_attribute dev_attr_hotkey_radio_sw =
2096 __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
2097
2098 static void hotkey_radio_sw_notify_change(void)
2099 {
2100 if (tp_features.hotkey_wlsw)
2101 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2102 "hotkey_radio_sw");
2103 }
2104
2105 /* sysfs hotkey tablet mode (pollable) --------------------------------- */
2106 static ssize_t hotkey_tablet_mode_show(struct device *dev,
2107 struct device_attribute *attr,
2108 char *buf)
2109 {
2110 int res, s;
2111 res = hotkey_get_tablet_mode(&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_tablet_mode =
2119 __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL);
2120
2121 static void hotkey_tablet_mode_notify_change(void)
2122 {
2123 if (tp_features.hotkey_tablet)
2124 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2125 "hotkey_tablet_mode");
2126 }
2127
2128 /* sysfs hotkey report_mode -------------------------------------------- */
2129 static ssize_t hotkey_report_mode_show(struct device *dev,
2130 struct device_attribute *attr,
2131 char *buf)
2132 {
2133 return snprintf(buf, PAGE_SIZE, "%d\n",
2134 (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
2135 }
2136
2137 static struct device_attribute dev_attr_hotkey_report_mode =
2138 __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
2139
2140 /* sysfs wakeup reason (pollable) -------------------------------------- */
2141 static ssize_t hotkey_wakeup_reason_show(struct device *dev,
2142 struct device_attribute *attr,
2143 char *buf)
2144 {
2145 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason);
2146 }
2147
2148 static struct device_attribute dev_attr_hotkey_wakeup_reason =
2149 __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL);
2150
2151 static void hotkey_wakeup_reason_notify_change(void)
2152 {
2153 if (tp_features.hotkey_mask)
2154 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2155 "wakeup_reason");
2156 }
2157
2158 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */
2159 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev,
2160 struct device_attribute *attr,
2161 char *buf)
2162 {
2163 return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack);
2164 }
2165
2166 static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete =
2167 __ATTR(wakeup_hotunplug_complete, S_IRUGO,
2168 hotkey_wakeup_hotunplug_complete_show, NULL);
2169
2170 static void hotkey_wakeup_hotunplug_complete_notify_change(void)
2171 {
2172 if (tp_features.hotkey_mask)
2173 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL,
2174 "wakeup_hotunplug_complete");
2175 }
2176
2177 /* --------------------------------------------------------------------- */
2178
2179 static struct attribute *hotkey_attributes[] __initdata = {
2180 &dev_attr_hotkey_enable.attr,
2181 &dev_attr_hotkey_bios_enabled.attr,
2182 &dev_attr_hotkey_report_mode.attr,
2183 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2184 &dev_attr_hotkey_mask.attr,
2185 &dev_attr_hotkey_all_mask.attr,
2186 &dev_attr_hotkey_recommended_mask.attr,
2187 &dev_attr_hotkey_source_mask.attr,
2188 &dev_attr_hotkey_poll_freq.attr,
2189 #endif
2190 };
2191
2192 static struct attribute *hotkey_mask_attributes[] __initdata = {
2193 &dev_attr_hotkey_bios_mask.attr,
2194 #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2195 &dev_attr_hotkey_mask.attr,
2196 &dev_attr_hotkey_all_mask.attr,
2197 &dev_attr_hotkey_recommended_mask.attr,
2198 #endif
2199 &dev_attr_hotkey_wakeup_reason.attr,
2200 &dev_attr_hotkey_wakeup_hotunplug_complete.attr,
2201 };
2202
2203 static void bluetooth_update_rfk(void);
2204 static void wan_update_rfk(void);
2205 static void uwb_update_rfk(void);
2206 static void tpacpi_send_radiosw_update(void)
2207 {
2208 int wlsw;
2209
2210 /* Sync these BEFORE sending any rfkill events */
2211 if (tp_features.bluetooth)
2212 bluetooth_update_rfk();
2213 if (tp_features.wan)
2214 wan_update_rfk();
2215 if (tp_features.uwb)
2216 uwb_update_rfk();
2217
2218 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
2219 mutex_lock(&tpacpi_inputdev_send_mutex);
2220
2221 input_report_switch(tpacpi_inputdev,
2222 SW_RFKILL_ALL, !!wlsw);
2223 input_sync(tpacpi_inputdev);
2224
2225 mutex_unlock(&tpacpi_inputdev_send_mutex);
2226 }
2227 hotkey_radio_sw_notify_change();
2228 }
2229
2230 static void hotkey_exit(void)
2231 {
2232 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2233 hotkey_poll_stop_sync();
2234 #endif
2235
2236 if (hotkey_dev_attributes)
2237 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2238
2239 kfree(hotkey_keycode_map);
2240
2241 if (tp_features.hotkey) {
2242 dbg_printk(TPACPI_DBG_EXIT,
2243 "restoring original hot key mask\n");
2244 /* no short-circuit boolean operator below! */
2245 if ((hotkey_mask_set(hotkey_orig_mask) |
2246 hotkey_status_set(hotkey_orig_status)) != 0)
2247 printk(TPACPI_ERR
2248 "failed to restore hot key mask "
2249 "to BIOS defaults\n");
2250 }
2251 }
2252
2253 static int __init hotkey_init(struct ibm_init_struct *iibm)
2254 {
2255 /* Requirements for changing the default keymaps:
2256 *
2257 * 1. Many of the keys are mapped to KEY_RESERVED for very
2258 * good reasons. Do not change them unless you have deep
2259 * knowledge on the IBM and Lenovo ThinkPad firmware for
2260 * the various ThinkPad models. The driver behaves
2261 * differently for KEY_RESERVED: such keys have their
2262 * hot key mask *unset* in mask_recommended, and also
2263 * in the initial hot key mask programmed into the
2264 * firmware at driver load time, which means the firm-
2265 * ware may react very differently if you change them to
2266 * something else;
2267 *
2268 * 2. You must be subscribed to the linux-thinkpad and
2269 * ibm-acpi-devel mailing lists, and you should read the
2270 * list archives since 2007 if you want to change the
2271 * keymaps. This requirement exists so that you will
2272 * know the past history of problems with the thinkpad-
2273 * acpi driver keymaps, and also that you will be
2274 * listening to any bug reports;
2275 *
2276 * 3. Do not send thinkpad-acpi specific patches directly to
2277 * for merging, *ever*. Send them to the linux-acpi
2278 * mailinglist for comments. Merging is to be done only
2279 * through acpi-test and the ACPI maintainer.
2280 *
2281 * If the above is too much to ask, don't change the keymap.
2282 * Ask the thinkpad-acpi maintainer to do it, instead.
2283 */
2284 static u16 ibm_keycode_map[] __initdata = {
2285 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2286 KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP,
2287 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2288 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
2289
2290 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2291 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2292 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2293 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
2294
2295 /* brightness: firmware always reacts to them, unless
2296 * X.org did some tricks in the radeon BIOS scratch
2297 * registers of *some* models */
2298 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
2299 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
2300
2301 /* Thinklight: firmware always react to it */
2302 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
2303
2304 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2305 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
2306
2307 /* Volume: firmware always react to it and reprograms
2308 * the built-in *extra* mixer. Never map it to control
2309 * another mixer by default. */
2310 KEY_RESERVED, /* 0x14: VOLUME UP */
2311 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2312 KEY_RESERVED, /* 0x16: MUTE */
2313
2314 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2315
2316 /* (assignments unknown, please report if found) */
2317 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2318 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2319 };
2320 static u16 lenovo_keycode_map[] __initdata = {
2321 /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */
2322 KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP,
2323 KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8,
2324 KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND,
2325
2326 /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */
2327 KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */
2328 KEY_UNKNOWN, /* 0x0D: FN+INSERT */
2329 KEY_UNKNOWN, /* 0x0E: FN+DELETE */
2330
2331 /* These either have to go through ACPI video, or
2332 * act like in the IBM ThinkPads, so don't ever
2333 * enable them by default */
2334 KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */
2335 KEY_RESERVED, /* 0x10: FN+END (brightness down) */
2336
2337 KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */
2338
2339 KEY_UNKNOWN, /* 0x12: FN+PGDOWN */
2340 KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */
2341
2342 /* Volume: z60/z61, T60 (BIOS version?): firmware always
2343 * react to it and reprograms the built-in *extra* mixer.
2344 * Never map it to control another mixer by default.
2345 *
2346 * T60?, T61, R60?, R61: firmware and EC tries to send
2347 * these over the regular keyboard, so these are no-ops,
2348 * but there are still weird bugs re. MUTE, so do not
2349 * change unless you get test reports from all Lenovo
2350 * models. May cause the BIOS to interfere with the
2351 * HDA mixer.
2352 */
2353 KEY_RESERVED, /* 0x14: VOLUME UP */
2354 KEY_RESERVED, /* 0x15: VOLUME DOWN */
2355 KEY_RESERVED, /* 0x16: MUTE */
2356
2357 KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */
2358
2359 /* (assignments unknown, please report if found) */
2360 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2361 KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
2362 };
2363
2364 #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map)
2365 #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map)
2366 #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0])
2367
2368 int res, i;
2369 int status;
2370 int hkeyv;
2371
2372 vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n");
2373
2374 BUG_ON(!tpacpi_inputdev);
2375 BUG_ON(tpacpi_inputdev->open != NULL ||
2376 tpacpi_inputdev->close != NULL);
2377
2378 TPACPI_ACPIHANDLE_INIT(hkey);
2379 mutex_init(&hotkey_mutex);
2380
2381 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2382 mutex_init(&hotkey_thread_mutex);
2383 mutex_init(&hotkey_thread_data_mutex);
2384 #endif
2385
2386 /* hotkey not supported on 570 */
2387 tp_features.hotkey = hkey_handle != NULL;
2388
2389 vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n",
2390 str_supported(tp_features.hotkey));
2391
2392 if (!tp_features.hotkey)
2393 return 1;
2394
2395 tpacpi_disable_brightness_delay();
2396
2397 hotkey_dev_attributes = create_attr_set(13, NULL);
2398 if (!hotkey_dev_attributes)
2399 return -ENOMEM;
2400 res = add_many_to_attr_set(hotkey_dev_attributes,
2401 hotkey_attributes,
2402 ARRAY_SIZE(hotkey_attributes));
2403 if (res)
2404 goto err_exit;
2405
2406 /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
2407 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
2408 for HKEY interface version 0x100 */
2409 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
2410 if ((hkeyv >> 8) != 1) {
2411 printk(TPACPI_ERR "unknown version of the "
2412 "HKEY interface: 0x%x\n", hkeyv);
2413 printk(TPACPI_ERR "please report this to %s\n",
2414 TPACPI_MAIL);
2415 } else {
2416 /*
2417 * MHKV 0x100 in A31, R40, R40e,
2418 * T4x, X31, and later
2419 */
2420 tp_features.hotkey_mask = 1;
2421 }
2422 }
2423
2424 vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n",
2425 str_supported(tp_features.hotkey_mask));
2426
2427 if (tp_features.hotkey_mask) {
2428 if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
2429 "MHKA", "qd")) {
2430 printk(TPACPI_ERR
2431 "missing MHKA handler, "
2432 "please report this to %s\n",
2433 TPACPI_MAIL);
2434 /* FN+F12, FN+F4, FN+F3 */
2435 hotkey_all_mask = 0x080cU;
2436 }
2437 }
2438
2439 /* hotkey_source_mask *must* be zero for
2440 * the first hotkey_mask_get */
2441 res = hotkey_status_get(&hotkey_orig_status);
2442 if (res)
2443 goto err_exit;
2444
2445 if (tp_features.hotkey_mask) {
2446 res = hotkey_mask_get();
2447 if (res)
2448 goto err_exit;
2449
2450 hotkey_orig_mask = hotkey_mask;
2451 res = add_many_to_attr_set(
2452 hotkey_dev_attributes,
2453 hotkey_mask_attributes,
2454 ARRAY_SIZE(hotkey_mask_attributes));
2455 if (res)
2456 goto err_exit;
2457 }
2458
2459 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
2460 if (tp_features.hotkey_mask) {
2461 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK
2462 & ~hotkey_all_mask;
2463 } else {
2464 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK;
2465 }
2466
2467 vdbg_printk(TPACPI_DBG_INIT,
2468 "hotkey source mask 0x%08x, polling freq %d\n",
2469 hotkey_source_mask, hotkey_poll_freq);
2470 #endif
2471
2472 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
2473 if (dbg_wlswemul) {
2474 tp_features.hotkey_wlsw = 1;
2475 printk(TPACPI_INFO
2476 "radio switch emulation enabled\n");
2477 } else
2478 #endif
2479 /* Not all thinkpads have a hardware radio switch */
2480 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) {
2481 tp_features.hotkey_wlsw = 1;
2482 printk(TPACPI_INFO
2483 "radio switch found; radios are %s\n",
2484 enabled(status, 0));
2485 }
2486 if (tp_features.hotkey_wlsw)
2487 res = add_to_attr_set(hotkey_dev_attributes,
2488 &dev_attr_hotkey_radio_sw.attr);
2489
2490 /* For X41t, X60t, X61t Tablets... */
2491 if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) {
2492 tp_features.hotkey_tablet = 1;
2493 printk(TPACPI_INFO
2494 "possible tablet mode switch found; "
2495 "ThinkPad in %s mode\n",
2496 (status & TP_HOTKEY_TABLET_MASK)?
2497 "tablet" : "laptop");
2498 res = add_to_attr_set(hotkey_dev_attributes,
2499 &dev_attr_hotkey_tablet_mode.attr);
2500 }
2501
2502 if (!res)
2503 res = register_attr_set_with_sysfs(
2504 hotkey_dev_attributes,
2505 &tpacpi_pdev->dev.kobj);
2506 if (res)
2507 goto err_exit;
2508
2509 /* Set up key map */
2510
2511 hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE,
2512 GFP_KERNEL);
2513 if (!hotkey_keycode_map) {
2514 printk(TPACPI_ERR
2515 "failed to allocate memory for key map\n");
2516 res = -ENOMEM;
2517 goto err_exit;
2518 }
2519
2520 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
2521 dbg_printk(TPACPI_DBG_INIT,
2522 "using Lenovo default hot key map\n");
2523 memcpy(hotkey_keycode_map, &lenovo_keycode_map,
2524 TPACPI_HOTKEY_MAP_SIZE);
2525 } else {
2526 dbg_printk(TPACPI_DBG_INIT,
2527 "using IBM default hot key map\n");
2528 memcpy(hotkey_keycode_map, &ibm_keycode_map,
2529 TPACPI_HOTKEY_MAP_SIZE);
2530 }
2531
2532 set_bit(EV_KEY, tpacpi_inputdev->evbit);
2533 set_bit(EV_MSC, tpacpi_inputdev->evbit);
2534 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
2535 tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE;
2536 tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN;
2537 tpacpi_inputdev->keycode = hotkey_keycode_map;
2538 for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) {
2539 if (hotkey_keycode_map[i] != KEY_RESERVED) {
2540 set_bit(hotkey_keycode_map[i],
2541 tpacpi_inputdev->keybit);
2542 } else {
2543 if (i < sizeof(hotkey_reserved_mask)*8)
2544 hotkey_reserved_mask |= 1 << i;
2545 }
2546 }
2547
2548 if (tp_features.hotkey_wlsw) {
2549 set_bit(EV_SW, tpacpi_inputdev->evbit);
2550 set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit);
2551 }
2552 if (tp_features.hotkey_tablet) {
2553 set_bit(EV_SW, tpacpi_inputdev->evbit);
2554 set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit);
2555 }
2556
2557 /* Do not issue duplicate brightness change events to
2558 * userspace */
2559 if (!tp_features.bright_acpimode)
2560 /* update bright_acpimode... */
2561 tpacpi_check_std_acpi_brightness_support();
2562
2563 if (tp_features.bright_acpimode) {
2564 printk(TPACPI_INFO
2565 "This ThinkPad has standard ACPI backlight "
2566 "brightness control, supported by the ACPI "
2567 "video driver\n");
2568 printk(TPACPI_NOTICE
2569 "Disabling thinkpad-acpi brightness events "
2570 "by default...\n");
2571
2572 /* The hotkey_reserved_mask change below is not
2573 * necessary while the keys are at KEY_RESERVED in the
2574 * default map, but better safe than sorry, leave it
2575 * here as a marker of what we have to do, especially
2576 * when we finally become able to set this at runtime
2577 * on response to X.org requests */
2578 hotkey_reserved_mask |=
2579 (1 << TP_ACPI_HOTKEYSCAN_FNHOME)
2580 | (1 << TP_ACPI_HOTKEYSCAN_FNEND);
2581 }
2582
2583 dbg_printk(TPACPI_DBG_INIT, "enabling hot key handling\n");
2584 res = hotkey_status_set(1);
2585 if (res) {
2586 hotkey_exit();
2587 return res;
2588 }
2589 res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask)
2590 & ~hotkey_reserved_mask)
2591 | hotkey_orig_mask);
2592 if (res < 0 && res != -ENXIO) {
2593 hotkey_exit();
2594 return res;
2595 }
2596
2597 dbg_printk(TPACPI_DBG_INIT,
2598 "legacy hot key reporting over procfs %s\n",
2599 (hotkey_report_mode < 2) ?
2600 "enabled" : "disabled");
2601
2602 tpacpi_inputdev->open = &hotkey_inputdev_open;
2603 tpacpi_inputdev->close = &hotkey_inputdev_close;
2604
2605 hotkey_poll_setup_safe(1);
2606 tpacpi_send_radiosw_update();
2607 tpacpi_input_send_tabletsw();
2608
2609 return 0;
2610
2611 err_exit:
2612 delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj);
2613 hotkey_dev_attributes = NULL;
2614
2615 return (res < 0)? res : 1;
2616 }
2617
2618 static bool hotkey_notify_hotkey(const u32 hkey,
2619 bool *send_acpi_ev,
2620 bool *ignore_acpi_ev)
2621 {
2622 /* 0x1000-0x1FFF: key presses */
2623 unsigned int scancode = hkey & 0xfff;
2624 *send_acpi_ev = true;
2625 *ignore_acpi_ev = false;
2626
2627 if (scancode > 0 && scancode < 0x21) {
2628 scancode--;
2629 if (!(hotkey_source_mask & (1 << scancode))) {
2630 tpacpi_input_send_key(scancode);
2631 *send_acpi_ev = false;
2632 } else {
2633 *ignore_acpi_ev = true;
2634 }
2635 return true;
2636 }
2637 return false;
2638 }
2639
2640 static bool hotkey_notify_wakeup(const u32 hkey,
2641 bool *send_acpi_ev,
2642 bool *ignore_acpi_ev)
2643 {
2644 /* 0x2000-0x2FFF: Wakeup reason */
2645 *send_acpi_ev = true;
2646 *ignore_acpi_ev = false;
2647
2648 switch (hkey) {
2649 case 0x2304: /* suspend, undock */
2650 case 0x2404: /* hibernation, undock */
2651 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK;
2652 *ignore_acpi_ev = true;
2653 break;
2654
2655 case 0x2305: /* suspend, bay eject */
2656 case 0x2405: /* hibernation, bay eject */
2657 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ;
2658 *ignore_acpi_ev = true;
2659 break;
2660
2661 case 0x2313: /* Battery on critical low level (S3) */
2662 case 0x2413: /* Battery on critical low level (S4) */
2663 printk(TPACPI_ALERT
2664 "EMERGENCY WAKEUP: battery almost empty\n");
2665 /* how to auto-heal: */
2666 /* 2313: woke up from S3, go to S4/S5 */
2667 /* 2413: woke up from S4, go to S5 */
2668 break;
2669
2670 default:
2671 return false;
2672 }
2673
2674 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) {
2675 printk(TPACPI_INFO
2676 "woke up due to a hot-unplug "
2677 "request...\n");
2678 hotkey_wakeup_reason_notify_change();
2679 }
2680 return true;
2681 }
2682
2683 static bool hotkey_notify_usrevent(const u32 hkey,
2684 bool *send_acpi_ev,
2685 bool *ignore_acpi_ev)
2686 {
2687 /* 0x5000-0x5FFF: human interface helpers */
2688 *send_acpi_ev = true;
2689 *ignore_acpi_ev = false;
2690
2691 switch (hkey) {
2692 case 0x5010: /* Lenovo new BIOS: brightness changed */
2693 case 0x500b: /* X61t: tablet pen inserted into bay */
2694 case 0x500c: /* X61t: tablet pen removed from bay */
2695 return true;
2696
2697 case 0x5009: /* X41t-X61t: swivel up (tablet mode) */
2698 case 0x500a: /* X41t-X61t: swivel down (normal mode) */
2699 tpacpi_input_send_tabletsw();
2700 hotkey_tablet_mode_notify_change();
2701 *send_acpi_ev = false;
2702 return true;
2703
2704 case 0x5001:
2705 case 0x5002:
2706 /* LID switch events. Do not propagate */
2707 *ignore_acpi_ev = true;
2708 return true;
2709
2710 default:
2711 return false;
2712 }
2713 }
2714
2715 static bool hotkey_notify_thermal(const u32 hkey,
2716 bool *send_acpi_ev,
2717 bool *ignore_acpi_ev)
2718 {
2719 /* 0x6000-0x6FFF: thermal alarms */
2720 *send_acpi_ev = true;
2721 *ignore_acpi_ev = false;
2722
2723 switch (hkey) {
2724 case 0x6011:
2725 printk(TPACPI_CRIT
2726 "THERMAL ALARM: battery is too hot!\n");
2727 /* recommended action: warn user through gui */
2728 return true;
2729 case 0x6012:
2730 printk(TPACPI_ALERT
2731 "THERMAL EMERGENCY: battery is extremely hot!\n");
2732 /* recommended action: immediate sleep/hibernate */
2733 return true;
2734 case 0x6021:
2735 printk(TPACPI_CRIT
2736 "THERMAL ALARM: "
2737 "a sensor reports something is too hot!\n");
2738 /* recommended action: warn user through gui, that */
2739 /* some internal component is too hot */
2740 return true;
2741 case 0x6022:
2742 printk(TPACPI_ALERT
2743 "THERMAL EMERGENCY: "
2744 "a sensor reports something is extremely hot!\n");
2745 /* recommended action: immediate sleep/hibernate */
2746 return true;
2747 case 0x6030:
2748 printk(TPACPI_INFO
2749 "EC reports that Thermal Table has changed\n");
2750 /* recommended action: do nothing, we don't have
2751 * Lenovo ATM information */
2752 return true;
2753 default:
2754 printk(TPACPI_ALERT
2755 "THERMAL ALERT: unknown thermal alarm received\n");
2756 return false;
2757 }
2758 }
2759
2760 static void hotkey_notify(struct ibm_struct *ibm, u32 event)
2761 {
2762 u32 hkey;
2763 bool send_acpi_ev;
2764 bool ignore_acpi_ev;
2765 bool known_ev;
2766
2767 if (event != 0x80) {
2768 printk(TPACPI_ERR
2769 "unknown HKEY notification event %d\n", event);
2770 /* forward it to userspace, maybe it knows how to handle it */
2771 acpi_bus_generate_netlink_event(
2772 ibm->acpi->device->pnp.device_class,
2773 dev_name(&ibm->acpi->device->dev),
2774 event, 0);
2775 return;
2776 }
2777
2778 while (1) {
2779 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
2780 printk(TPACPI_ERR "failed to retrieve HKEY event\n");
2781 return;
2782 }
2783
2784 if (hkey == 0) {
2785 /* queue empty */
2786 return;
2787 }
2788
2789 send_acpi_ev = true;
2790 ignore_acpi_ev = false;
2791
2792 switch (hkey >> 12) {
2793 case 1:
2794 /* 0x1000-0x1FFF: key presses */
2795 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev,
2796 &ignore_acpi_ev);
2797 break;
2798 case 2:
2799 /* 0x2000-0x2FFF: Wakeup reason */
2800 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev,
2801 &ignore_acpi_ev);
2802 break;
2803 case 3:
2804 /* 0x3000-0x3FFF: bay-related wakeups */
2805 if (hkey == 0x3003) {
2806 hotkey_autosleep_ack = 1;
2807 printk(TPACPI_INFO
2808 "bay ejected\n");
2809 hotkey_wakeup_hotunplug_complete_notify_change();
2810 known_ev = true;
2811 } else {
2812 known_ev = false;
2813 }
2814 break;
2815 case 4:
2816 /* 0x4000-0x4FFF: dock-related wakeups */
2817 if (hkey == 0x4003) {
2818 hotkey_autosleep_ack = 1;
2819 printk(TPACPI_INFO
2820 "undocked\n");
2821 hotkey_wakeup_hotunplug_complete_notify_change();
2822 known_ev = true;
2823 } else {
2824 known_ev = false;
2825 }
2826 break;
2827 case 5:
2828 /* 0x5000-0x5FFF: human interface helpers */
2829 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev,
2830 &ignore_acpi_ev);
2831 break;
2832 case 6:
2833 /* 0x6000-0x6FFF: thermal alarms */
2834 known_ev = hotkey_notify_thermal(hkey, &send_acpi_ev,
2835 &ignore_acpi_ev);
2836 break;
2837 case 7:
2838 /* 0x7000-0x7FFF: misc */
2839 if (tp_features.hotkey_wlsw && hkey == 0x7000) {
2840 tpacpi_send_radiosw_update();
2841 send_acpi_ev = 0;
2842 known_ev = true;
2843 break;
2844 }
2845 /* fallthrough to default */
2846 default:
2847 known_ev = false;
2848 }
2849 if (!known_ev) {
2850 printk(TPACPI_NOTICE
2851 "unhandled HKEY event 0x%04x\n", hkey);
2852 printk(TPACPI_NOTICE
2853 "please report the conditions when this "
2854 "event happened to %s\n", TPACPI_MAIL);
2855 }
2856
2857 /* Legacy events */
2858 if (!ignore_acpi_ev &&
2859 (send_acpi_ev || hotkey_report_mode < 2)) {
2860 acpi_bus_generate_proc_event(ibm->acpi->device,
2861 event, hkey);
2862 }
2863
2864 /* netlink events */
2865 if (!ignore_acpi_ev && send_acpi_ev) {
2866 acpi_bus_generate_netlink_event(
2867 ibm->acpi->device->pnp.device_class,
2868 dev_name(&ibm->acpi->device->dev),
2869 event, hkey);
2870 }
2871 }
2872 }
2873
2874 static void hotkey_suspend(pm_message_t state)
2875 {
2876 /* Do these on suspend, we get the events on early resume! */
2877 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE;
2878 hotkey_autosleep_ack = 0;
2879 }
2880
2881 static void hotkey_resume(void)
2882 {
2883 tpacpi_disable_brightness_delay();
2884
2885 if (hotkey_mask_get())
2886 printk(TPACPI_ERR
2887 "error while trying to read hot key mask "
2888 "from firmware\n");
2889 tpacpi_send_radiosw_update();
2890 hotkey_tablet_mode_notify_change();
2891 hotkey_wakeup_reason_notify_change();
2892 hotkey_wakeup_hotunplug_complete_notify_change();
2893 hotkey_poll_setup_safe(0);
2894 }
2895
2896 /* procfs -------------------------------------------------------------- */
2897 static int hotkey_read(char *p)
2898 {
2899 int res, status;
2900 int len = 0;
2901
2902 if (!tp_features.hotkey) {
2903 len += sprintf(p + len, "status:\t\tnot supported\n");
2904 return len;
2905 }
2906
2907 if (mutex_lock_killable(&hotkey_mutex))
2908 return -ERESTARTSYS;
2909 res = hotkey_status_get(&status);
2910 if (!res)
2911 res = hotkey_mask_get();
2912 mutex_unlock(&hotkey_mutex);
2913 if (res)
2914 return res;
2915
2916 len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0));
2917 if (tp_features.hotkey_mask) {
2918 len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask);
2919 len += sprintf(p + len,
2920 "commands:\tenable, disable, reset, <mask>\n");
2921 } else {
2922 len += sprintf(p + len, "mask:\t\tnot supported\n");
2923 len += sprintf(p + len, "commands:\tenable, disable, reset\n");
2924 }
2925
2926 return len;
2927 }
2928
2929 static int hotkey_write(char *buf)
2930 {
2931 int res, status;
2932 u32 mask;
2933 char *cmd;
2934
2935 if (!tp_features.hotkey)
2936 return -ENODEV;
2937
2938 if (mutex_lock_killable(&hotkey_mutex))
2939 return -ERESTARTSYS;
2940
2941 status = -1;
2942 mask = hotkey_mask;
2943
2944 res = 0;
2945 while ((cmd = next_cmd(&buf))) {
2946 if (strlencmp(cmd, "enable") == 0) {
2947 status = 1;
2948 } else if (strlencmp(cmd, "disable") == 0) {
2949 status = 0;
2950 } else if (strlencmp(cmd, "reset") == 0) {
2951 status = hotkey_orig_status;
2952 mask = hotkey_orig_mask;
2953 } else if (sscanf(cmd, "0x%x", &mask) == 1) {
2954 /* mask set */
2955 } else if (sscanf(cmd, "%x", &mask) == 1) {
2956 /* mask set */
2957 } else {
2958 res = -EINVAL;
2959 goto errexit;
2960 }
2961 }
2962 if (status != -1)
2963 res = hotkey_status_set(status);
2964
2965 if (!res && mask != hotkey_mask)
2966 res = hotkey_mask_set(mask);
2967
2968 errexit:
2969 mutex_unlock(&hotkey_mutex);
2970 return res;
2971 }
2972
2973 static const struct acpi_device_id ibm_htk_device_ids[] = {
2974 {TPACPI_ACPI_HKEY_HID, 0},
2975 {"", 0},
2976 };
2977
2978 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = {
2979 .hid = ibm_htk_device_ids,
2980 .notify = hotkey_notify,
2981 .handle = &hkey_handle,
2982 .type = ACPI_DEVICE_NOTIFY,
2983 };
2984
2985 static struct ibm_struct hotkey_driver_data = {
2986 .name = "hotkey",
2987 .read = hotkey_read,
2988 .write = hotkey_write,
2989 .exit = hotkey_exit,
2990 .resume = hotkey_resume,
2991 .suspend = hotkey_suspend,
2992 .acpi = &ibm_hotkey_acpidriver,
2993 };
2994
2995 /*************************************************************************
2996 * Bluetooth subdriver
2997 */
2998
2999 enum {
3000 /* ACPI GBDC/SBDC bits */
3001 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */
3002 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */
3003 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume:
3004 off / last state */
3005 };
3006
3007 enum {
3008 /* ACPI \BLTH commands */
3009 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */
3010 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */
3011 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */
3012 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */
3013 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */
3014 };
3015
3016 static struct rfkill *tpacpi_bluetooth_rfkill;
3017
3018 static void bluetooth_suspend(pm_message_t state)
3019 {
3020 /* Try to make sure radio will resume powered off */
3021 acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3022 TP_ACPI_BLTH_PWR_OFF_ON_RESUME);
3023 }
3024
3025 static int bluetooth_get_radiosw(void)
3026 {
3027 int status;
3028
3029 if (!tp_features.bluetooth)
3030 return -ENODEV;
3031
3032 /* WLSW overrides bluetooth in firmware/hardware, reflect that */
3033 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3034 return RFKILL_STATE_HARD_BLOCKED;
3035
3036 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3037 if (dbg_bluetoothemul)
3038 return (tpacpi_bluetooth_emulstate) ?
3039 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3040 #endif
3041
3042 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
3043 return -EIO;
3044
3045 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
3046 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3047 }
3048
3049 static void bluetooth_update_rfk(void)
3050 {
3051 int status;
3052
3053 if (!tpacpi_bluetooth_rfkill)
3054 return;
3055
3056 status = bluetooth_get_radiosw();
3057 if (status < 0)
3058 return;
3059 rfkill_force_state(tpacpi_bluetooth_rfkill, status);
3060 }
3061
3062 static int bluetooth_set_radiosw(int radio_on, int update_rfk)
3063 {
3064 int status;
3065
3066 if (!tp_features.bluetooth)
3067 return -ENODEV;
3068
3069 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3070 * reason to risk weird behaviour. */
3071 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3072 && radio_on)
3073 return -EPERM;
3074
3075 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3076 if (dbg_bluetoothemul) {
3077 tpacpi_bluetooth_emulstate = !!radio_on;
3078 if (update_rfk)
3079 bluetooth_update_rfk();
3080 return 0;
3081 }
3082 #endif
3083
3084 /* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
3085 if (radio_on)
3086 status = TP_ACPI_BLUETOOTH_RADIOSSW;
3087 else
3088 status = 0;
3089 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
3090 return -EIO;
3091
3092 if (update_rfk)
3093 bluetooth_update_rfk();
3094
3095 return 0;
3096 }
3097
3098 /* sysfs bluetooth enable ---------------------------------------------- */
3099 static ssize_t bluetooth_enable_show(struct device *dev,
3100 struct device_attribute *attr,
3101 char *buf)
3102 {
3103 int status;
3104
3105 printk_deprecated_rfkill_attribute("bluetooth_enable");
3106
3107 status = bluetooth_get_radiosw();
3108 if (status < 0)
3109 return status;
3110
3111 return snprintf(buf, PAGE_SIZE, "%d\n",
3112 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
3113 }
3114
3115 static ssize_t bluetooth_enable_store(struct device *dev,
3116 struct device_attribute *attr,
3117 const char *buf, size_t count)
3118 {
3119 unsigned long t;
3120 int res;
3121
3122 printk_deprecated_rfkill_attribute("bluetooth_enable");
3123
3124 if (parse_strtoul(buf, 1, &t))
3125 return -EINVAL;
3126
3127 res = bluetooth_set_radiosw(t, 1);
3128
3129 return (res) ? res : count;
3130 }
3131
3132 static struct device_attribute dev_attr_bluetooth_enable =
3133 __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO,
3134 bluetooth_enable_show, bluetooth_enable_store);
3135
3136 /* --------------------------------------------------------------------- */
3137
3138 static struct attribute *bluetooth_attributes[] = {
3139 &dev_attr_bluetooth_enable.attr,
3140 NULL
3141 };
3142
3143 static const struct attribute_group bluetooth_attr_group = {
3144 .attrs = bluetooth_attributes,
3145 };
3146
3147 static int tpacpi_bluetooth_rfk_get(void *data, enum rfkill_state *state)
3148 {
3149 int bts = bluetooth_get_radiosw();
3150
3151 if (bts < 0)
3152 return bts;
3153
3154 *state = bts;
3155 return 0;
3156 }
3157
3158 static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
3159 {
3160 return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3161 }
3162
3163 static void bluetooth_shutdown(void)
3164 {
3165 /* Order firmware to save current state to NVRAM */
3166 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd",
3167 TP_ACPI_BLTH_SAVE_STATE))
3168 printk(TPACPI_NOTICE
3169 "failed to save bluetooth state to NVRAM\n");
3170 }
3171
3172 static void bluetooth_exit(void)
3173 {
3174 bluetooth_shutdown();
3175
3176 if (tpacpi_bluetooth_rfkill)
3177 rfkill_unregister(tpacpi_bluetooth_rfkill);
3178
3179 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3180 &bluetooth_attr_group);
3181 }
3182
3183 static int __init bluetooth_init(struct ibm_init_struct *iibm)
3184 {
3185 int res;
3186 int status = 0;
3187
3188 vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n");
3189
3190 TPACPI_ACPIHANDLE_INIT(hkey);
3191
3192 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
3193 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */
3194 tp_features.bluetooth = hkey_handle &&
3195 acpi_evalf(hkey_handle, &status, "GBDC", "qd");
3196
3197 vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n",
3198 str_supported(tp_features.bluetooth),
3199 status);
3200
3201 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3202 if (dbg_bluetoothemul) {
3203 tp_features.bluetooth = 1;
3204 printk(TPACPI_INFO
3205 "bluetooth switch emulation enabled\n");
3206 } else
3207 #endif
3208 if (tp_features.bluetooth &&
3209 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) {
3210 /* no bluetooth hardware present in system */
3211 tp_features.bluetooth = 0;
3212 dbg_printk(TPACPI_DBG_INIT,
3213 "bluetooth hardware not installed\n");
3214 }
3215
3216 if (!tp_features.bluetooth)
3217 return 1;
3218
3219 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3220 &bluetooth_attr_group);
3221 if (res)
3222 return res;
3223
3224 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
3225 &tpacpi_bluetooth_rfkill,
3226 RFKILL_TYPE_BLUETOOTH,
3227 "tpacpi_bluetooth_sw",
3228 true,
3229 tpacpi_bluetooth_rfk_set,
3230 tpacpi_bluetooth_rfk_get);
3231 if (res) {
3232 bluetooth_exit();
3233 return res;
3234 }
3235
3236 return 0;
3237 }
3238
3239 /* procfs -------------------------------------------------------------- */
3240 static int bluetooth_read(char *p)
3241 {
3242 int len = 0;
3243 int status = bluetooth_get_radiosw();
3244
3245 if (!tp_features.bluetooth)
3246 len += sprintf(p + len, "status:\t\tnot supported\n");
3247 else {
3248 len += sprintf(p + len, "status:\t\t%s\n",
3249 (status == RFKILL_STATE_UNBLOCKED) ?
3250 "enabled" : "disabled");
3251 len += sprintf(p + len, "commands:\tenable, disable\n");
3252 }
3253
3254 return len;
3255 }
3256
3257 static int bluetooth_write(char *buf)
3258 {
3259 char *cmd;
3260
3261 if (!tp_features.bluetooth)
3262 return -ENODEV;
3263
3264 while ((cmd = next_cmd(&buf))) {
3265 if (strlencmp(cmd, "enable") == 0) {
3266 bluetooth_set_radiosw(1, 1);
3267 } else if (strlencmp(cmd, "disable") == 0) {
3268 bluetooth_set_radiosw(0, 1);
3269 } else
3270 return -EINVAL;
3271 }
3272
3273 return 0;
3274 }
3275
3276 static struct ibm_struct bluetooth_driver_data = {
3277 .name = "bluetooth",
3278 .read = bluetooth_read,
3279 .write = bluetooth_write,
3280 .exit = bluetooth_exit,
3281 .suspend = bluetooth_suspend,
3282 .shutdown = bluetooth_shutdown,
3283 };
3284
3285 /*************************************************************************
3286 * Wan subdriver
3287 */
3288
3289 enum {
3290 /* ACPI GWAN/SWAN bits */
3291 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */
3292 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */
3293 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume:
3294 off / last state */
3295 };
3296
3297 static struct rfkill *tpacpi_wan_rfkill;
3298
3299 static void wan_suspend(pm_message_t state)
3300 {
3301 /* Try to make sure radio will resume powered off */
3302 acpi_evalf(NULL, NULL, "\\WGSV", "qvd",
3303 TP_ACPI_WGSV_PWR_OFF_ON_RESUME);
3304 }
3305
3306 static int wan_get_radiosw(void)
3307 {
3308 int status;
3309
3310 if (!tp_features.wan)
3311 return -ENODEV;
3312
3313 /* WLSW overrides WWAN in firmware/hardware, reflect that */
3314 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3315 return RFKILL_STATE_HARD_BLOCKED;
3316
3317 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3318 if (dbg_wwanemul)
3319 return (tpacpi_wwan_emulstate) ?
3320 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3321 #endif
3322
3323 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
3324 return -EIO;
3325
3326 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
3327 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3328 }
3329
3330 static void wan_update_rfk(void)
3331 {
3332 int status;
3333
3334 if (!tpacpi_wan_rfkill)
3335 return;
3336
3337 status = wan_get_radiosw();
3338 if (status < 0)
3339 return;
3340 rfkill_force_state(tpacpi_wan_rfkill, status);
3341 }
3342
3343 static int wan_set_radiosw(int radio_on, int update_rfk)
3344 {
3345 int status;
3346
3347 if (!tp_features.wan)
3348 return -ENODEV;
3349
3350 /* WLSW overrides bluetooth in firmware/hardware, but there is no
3351 * reason to risk weird behaviour. */
3352 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3353 && radio_on)
3354 return -EPERM;
3355
3356 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3357 if (dbg_wwanemul) {
3358 tpacpi_wwan_emulstate = !!radio_on;
3359 if (update_rfk)
3360 wan_update_rfk();
3361 return 0;
3362 }
3363 #endif
3364
3365 /* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
3366 if (radio_on)
3367 status = TP_ACPI_WANCARD_RADIOSSW;
3368 else
3369 status = 0;
3370 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
3371 return -EIO;
3372
3373 if (update_rfk)
3374 wan_update_rfk();
3375
3376 return 0;
3377 }
3378
3379 /* sysfs wan enable ---------------------------------------------------- */
3380 static ssize_t wan_enable_show(struct device *dev,
3381 struct device_attribute *attr,
3382 char *buf)
3383 {
3384 int status;
3385
3386 printk_deprecated_rfkill_attribute("wwan_enable");
3387
3388 status = wan_get_radiosw();
3389 if (status < 0)
3390 return status;
3391
3392 return snprintf(buf, PAGE_SIZE, "%d\n",
3393 (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
3394 }
3395
3396 static ssize_t wan_enable_store(struct device *dev,
3397 struct device_attribute *attr,
3398 const char *buf, size_t count)
3399 {
3400 unsigned long t;
3401 int res;
3402
3403 printk_deprecated_rfkill_attribute("wwan_enable");
3404
3405 if (parse_strtoul(buf, 1, &t))
3406 return -EINVAL;
3407
3408 res = wan_set_radiosw(t, 1);
3409
3410 return (res) ? res : count;
3411 }
3412
3413 static struct device_attribute dev_attr_wan_enable =
3414 __ATTR(wwan_enable, S_IWUSR | S_IRUGO,
3415 wan_enable_show, wan_enable_store);
3416
3417 /* --------------------------------------------------------------------- */
3418
3419 static struct attribute *wan_attributes[] = {
3420 &dev_attr_wan_enable.attr,
3421 NULL
3422 };
3423
3424 static const struct attribute_group wan_attr_group = {
3425 .attrs = wan_attributes,
3426 };
3427
3428 static int tpacpi_wan_rfk_get(void *data, enum rfkill_state *state)
3429 {
3430 int wans = wan_get_radiosw();
3431
3432 if (wans < 0)
3433 return wans;
3434
3435 *state = wans;
3436 return 0;
3437 }
3438
3439 static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
3440 {
3441 return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3442 }
3443
3444 static void wan_shutdown(void)
3445 {
3446 /* Order firmware to save current state to NVRAM */
3447 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd",
3448 TP_ACPI_WGSV_SAVE_STATE))
3449 printk(TPACPI_NOTICE
3450 "failed to save WWAN state to NVRAM\n");
3451 }
3452
3453 static void wan_exit(void)
3454 {
3455 wan_shutdown();
3456
3457 if (tpacpi_wan_rfkill)
3458 rfkill_unregister(tpacpi_wan_rfkill);
3459
3460 sysfs_remove_group(&tpacpi_pdev->dev.kobj,
3461 &wan_attr_group);
3462 }
3463
3464 static int __init wan_init(struct ibm_init_struct *iibm)
3465 {
3466 int res;
3467 int status = 0;
3468
3469 vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n");
3470
3471 TPACPI_ACPIHANDLE_INIT(hkey);
3472
3473 tp_features.wan = hkey_handle &&
3474 acpi_evalf(hkey_handle, &status, "GWAN", "qd");
3475
3476 vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n",
3477 str_supported(tp_features.wan),
3478 status);
3479
3480 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3481 if (dbg_wwanemul) {
3482 tp_features.wan = 1;
3483 printk(TPACPI_INFO
3484 "wwan switch emulation enabled\n");
3485 } else
3486 #endif
3487 if (tp_features.wan &&
3488 !(status & TP_ACPI_WANCARD_HWPRESENT)) {
3489 /* no wan hardware present in system */
3490 tp_features.wan = 0;
3491 dbg_printk(TPACPI_DBG_INIT,
3492 "wan hardware not installed\n");
3493 }
3494
3495 if (!tp_features.wan)
3496 return 1;
3497
3498 res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
3499 &wan_attr_group);
3500 if (res)
3501 return res;
3502
3503 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
3504 &tpacpi_wan_rfkill,
3505 RFKILL_TYPE_WWAN,
3506 "tpacpi_wwan_sw",
3507 true,
3508 tpacpi_wan_rfk_set,
3509 tpacpi_wan_rfk_get);
3510 if (res) {
3511 wan_exit();
3512 return res;
3513 }
3514
3515 return 0;
3516 }
3517
3518 /* procfs -------------------------------------------------------------- */
3519 static int wan_read(char *p)
3520 {
3521 int len = 0;
3522 int status = wan_get_radiosw();
3523
3524 if (!tp_features.wan)
3525 len += sprintf(p + len, "status:\t\tnot supported\n");
3526 else {
3527 len += sprintf(p + len, "status:\t\t%s\n",
3528 (status == RFKILL_STATE_UNBLOCKED) ?
3529 "enabled" : "disabled");
3530 len += sprintf(p + len, "commands:\tenable, disable\n");
3531 }
3532
3533 return len;
3534 }
3535
3536 static int wan_write(char *buf)
3537 {
3538 char *cmd;
3539
3540 if (!tp_features.wan)
3541 return -ENODEV;
3542
3543 while ((cmd = next_cmd(&buf))) {
3544 if (strlencmp(cmd, "enable") == 0) {
3545 wan_set_radiosw(1, 1);
3546 } else if (strlencmp(cmd, "disable") == 0) {
3547 wan_set_radiosw(0, 1);
3548 } else
3549 return -EINVAL;
3550 }
3551
3552 return 0;
3553 }
3554
3555 static struct ibm_struct wan_driver_data = {
3556 .name = "wan",
3557 .read = wan_read,
3558 .write = wan_write,
3559 .exit = wan_exit,
3560 .suspend = wan_suspend,
3561 .shutdown = wan_shutdown,
3562 };
3563
3564 /*************************************************************************
3565 * UWB subdriver
3566 */
3567
3568 enum {
3569 /* ACPI GUWB/SUWB bits */
3570 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */
3571 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */
3572 };
3573
3574 static struct rfkill *tpacpi_uwb_rfkill;
3575
3576 static int uwb_get_radiosw(void)
3577 {
3578 int status;
3579
3580 if (!tp_features.uwb)
3581 return -ENODEV;
3582
3583 /* WLSW overrides UWB in firmware/hardware, reflect that */
3584 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
3585 return RFKILL_STATE_HARD_BLOCKED;
3586
3587 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3588 if (dbg_uwbemul)
3589 return (tpacpi_uwb_emulstate) ?
3590 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3591 #endif
3592
3593 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
3594 return -EIO;
3595
3596 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
3597 RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
3598 }
3599
3600 static void uwb_update_rfk(void)
3601 {
3602 int status;
3603
3604 if (!tpacpi_uwb_rfkill)
3605 return;
3606
3607 status = uwb_get_radiosw();
3608 if (status < 0)
3609 return;
3610 rfkill_force_state(tpacpi_uwb_rfkill, status);
3611 }
3612
3613 static int uwb_set_radiosw(int radio_on, int update_rfk)
3614 {
3615 int status;
3616
3617 if (!tp_features.uwb)
3618 return -ENODEV;
3619
3620 /* WLSW overrides UWB in firmware/hardware, but there is no
3621 * reason to risk weird behaviour. */
3622 if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
3623 && radio_on)
3624 return -EPERM;
3625
3626 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3627 if (dbg_uwbemul) {
3628 tpacpi_uwb_emulstate = !!radio_on;
3629 if (update_rfk)
3630 uwb_update_rfk();
3631 return 0;
3632 }
3633 #endif
3634
3635 status = (radio_on) ? TP_ACPI_UWB_RADIOSSW : 0;
3636 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
3637 return -EIO;
3638
3639 if (update_rfk)
3640 uwb_update_rfk();
3641
3642 return 0;
3643 }
3644
3645 /* --------------------------------------------------------------------- */
3646
3647 static int tpacpi_uwb_rfk_get(void *data, enum rfkill_state *state)
3648 {
3649 int uwbs = uwb_get_radiosw();
3650
3651 if (uwbs < 0)
3652 return uwbs;
3653
3654 *state = uwbs;
3655 return 0;
3656 }
3657
3658 static int tpacpi_uwb_rfk_set(void *data, enum rfkill_state state)
3659 {
3660 return uwb_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
3661 }
3662
3663 static void uwb_exit(void)
3664 {
3665 if (tpacpi_uwb_rfkill)
3666 rfkill_unregister(tpacpi_uwb_rfkill);
3667 }
3668
3669 static int __init uwb_init(struct ibm_init_struct *iibm)
3670 {
3671 int res;
3672 int status = 0;
3673
3674 vdbg_printk(TPACPI_DBG_INIT, "initializing uwb subdriver\n");
3675
3676 TPACPI_ACPIHANDLE_INIT(hkey);
3677
3678 tp_features.uwb = hkey_handle &&
3679 acpi_evalf(hkey_handle, &status, "GUWB", "qd");
3680
3681 vdbg_printk(TPACPI_DBG_INIT, "uwb is %s, status 0x%02x\n",
3682 str_supported(tp_features.uwb),
3683 status);
3684
3685 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
3686 if (dbg_uwbemul) {
3687 tp_features.uwb = 1;
3688 printk(TPACPI_INFO
3689 "uwb switch emulation enabled\n");
3690 } else
3691 #endif
3692 if (tp_features.uwb &&
3693 !(status & TP_ACPI_UWB_HWPRESENT)) {
3694 /* no uwb hardware present in system */
3695 tp_features.uwb = 0;
3696 dbg_printk(TPACPI_DBG_INIT,
3697 "uwb hardware not installed\n");
3698 }
3699
3700 if (!tp_features.uwb)
3701 return 1;
3702
3703 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
3704 &tpacpi_uwb_rfkill,
3705 RFKILL_TYPE_UWB,
3706 "tpacpi_uwb_sw",
3707 false,
3708 tpacpi_uwb_rfk_set,
3709 tpacpi_uwb_rfk_get);
3710
3711 return res;
3712 }
3713
3714 static struct ibm_struct uwb_driver_data = {
3715 .name = "uwb",
3716 .exit = uwb_exit,
3717 .flags.experimental = 1,
3718 };
3719
3720 /*************************************************************************
3721 * Video subdriver
3722 */
3723
3724 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
3725
3726 enum video_access_mode {
3727 TPACPI_VIDEO_NONE = 0,
3728 TPACPI_VIDEO_570, /* 570 */
3729 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */
3730 TPACPI_VIDEO_NEW, /* all others */
3731 };
3732
3733 enum { /* video status flags, based on VIDEO_570 */
3734 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */
3735 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */
3736 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */
3737 };
3738
3739 enum { /* TPACPI_VIDEO_570 constants */
3740 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */
3741 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to
3742 * video_status_flags */
3743 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */
3744 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */
3745 };
3746
3747 static enum video_access_mode video_supported;
3748 static int video_orig_autosw;
3749
3750 static int video_autosw_get(void);
3751 static int video_autosw_set(int enable);
3752
3753 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */
3754
3755 static int __init video_init(struct ibm_init_struct *iibm)
3756 {
3757 int ivga;
3758
3759 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n");
3760
3761 TPACPI_ACPIHANDLE_INIT(vid);
3762 TPACPI_ACPIHANDLE_INIT(vid2);
3763
3764 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga)
3765 /* G41, assume IVGA doesn't change */
3766 vid_handle = vid2_handle;
3767
3768 if (!vid_handle)
3769 /* video switching not supported on R30, R31 */
3770 video_supported = TPACPI_VIDEO_NONE;
3771 else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd"))
3772 /* 570 */
3773 video_supported = TPACPI_VIDEO_570;
3774 else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd"))
3775 /* 600e/x, 770e, 770x */
3776 video_supported = TPACPI_VIDEO_770;
3777 else
3778 /* all others */
3779 video_supported = TPACPI_VIDEO_NEW;
3780
3781 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n",
3782 str_supported(video_supported != TPACPI_VIDEO_NONE),
3783 video_supported);
3784
3785 return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1;
3786 }
3787
3788 static void video_exit(void)
3789 {
3790 dbg_printk(TPACPI_DBG_EXIT,
3791 "restoring original video autoswitch mode\n");
3792 if (video_autosw_set(video_orig_autosw))
3793 printk(TPACPI_ERR "error while trying to restore original "
3794 "video autoswitch mode\n");
3795 }
3796
3797 static int video_outputsw_get(void)
3798 {
3799 int status = 0;
3800 int i;
3801
3802 switch (video_supported) {
3803 case TPACPI_VIDEO_570:
3804 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd",
3805 TP_ACPI_VIDEO_570_PHSCMD))
3806 return -EIO;
3807 status = i & TP_ACPI_VIDEO_570_PHSMASK;
3808 break;
3809 case TPACPI_VIDEO_770:
3810 if (!acpi_evalf(NULL, &i, "\\VCDL", "d"))
3811 return -EIO;
3812 if (i)
3813 status |= TP_ACPI_VIDEO_S_LCD;
3814 if (!acpi_evalf(NULL, &i, "\\VCDC", "d"))
3815 return -EIO;
3816 if (i)
3817 status |= TP_ACPI_VIDEO_S_CRT;
3818 break;
3819 case TPACPI_VIDEO_NEW:
3820 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) ||
3821 !acpi_evalf(NULL, &i, "\\VCDC", "d"))
3822 return -EIO;
3823 if (i)
3824 status |= TP_ACPI_VIDEO_S_CRT;
3825
3826 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) ||
3827 !acpi_evalf(NULL, &i, "\\VCDL", "d"))
3828 return -EIO;
3829 if (i)
3830 status |= TP_ACPI_VIDEO_S_LCD;
3831 if (!acpi_evalf(NULL, &i, "\\VCDD", "d"))
3832 return -EIO;
3833 if (i)
3834 status |= TP_ACPI_VIDEO_S_DVI;
3835 break;
3836 default:
3837 return -ENOSYS;
3838 }
3839
3840 return status;
3841 }
3842
3843 static int video_outputsw_set(int status)
3844 {
3845 int autosw;
3846 int res = 0;
3847
3848 switch (video_supported) {
3849 case TPACPI_VIDEO_570:
3850 res = acpi_evalf(NULL, NULL,
3851 "\\_SB.PHS2", "vdd",
3852 TP_ACPI_VIDEO_570_PHS2CMD,
3853 status | TP_ACPI_VIDEO_570_PHS2SET);
3854 break;
3855 case TPACPI_VIDEO_770:
3856 autosw = video_autosw_get();
3857 if (autosw < 0)
3858 return autosw;
3859
3860 res = video_autosw_set(1);
3861 if (res)
3862 return res;
3863 res = acpi_evalf(vid_handle, NULL,
3864 "ASWT", "vdd", status * 0x100, 0);
3865 if (!autosw && video_autosw_set(autosw)) {
3866 printk(TPACPI_ERR
3867 "video auto-switch left enabled due to error\n");
3868 return -EIO;
3869 }
3870 break;
3871 case TPACPI_VIDEO_NEW:
3872 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) &&
3873 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1);
3874 break;
3875 default:
3876 return -ENOSYS;
3877 }
3878
3879 return (res)? 0 : -EIO;
3880 }
3881
3882 static int video_autosw_get(void)
3883 {
3884 int autosw = 0;
3885
3886 switch (video_supported) {
3887 case TPACPI_VIDEO_570:
3888 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d"))
3889 return -EIO;
3890 break;
3891 case TPACPI_VIDEO_770:
3892 case TPACPI_VIDEO_NEW:
3893 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d"))
3894 return -EIO;
3895 break;
3896 default:
3897 return -ENOSYS;
3898 }
3899
3900 return autosw & 1;
3901 }
3902
3903 static int video_autosw_set(int enable)
3904 {
3905 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0))
3906 return -EIO;
3907 return 0;
3908 }
3909
3910 static int video_outputsw_cycle(void)
3911 {
3912 int autosw = video_autosw_get();
3913 int res;
3914
3915 if (autosw < 0)
3916 return autosw;
3917
3918 switch (video_supported) {
3919 case TPACPI_VIDEO_570:
3920 res = video_autosw_set(1);
3921 if (res)
3922 return res;
3923 res = acpi_evalf(ec_handle, NULL, "_Q16", "v");
3924 break;
3925 case TPACPI_VIDEO_770:
3926 case TPACPI_VIDEO_NEW:
3927 res = video_autosw_set(1);
3928 if (res)
3929 return res;
3930 res = acpi_evalf(vid_handle, NULL, "VSWT", "v");
3931 break;
3932 default:
3933 return -ENOSYS;
3934 }
3935 if (!autosw && video_autosw_set(autosw)) {
3936 printk(TPACPI_ERR
3937 "video auto-switch left enabled due to error\n");
3938 return -EIO;
3939 }
3940
3941 return (res)? 0 : -EIO;
3942 }
3943
3944 static int video_expand_toggle(void)
3945 {
3946 switch (video_supported) {
3947 case TPACPI_VIDEO_570:
3948 return acpi_evalf(ec_handle, NULL, "_Q17", "v")?
3949 0 : -EIO;
3950 case TPACPI_VIDEO_770:
3951 return acpi_evalf(vid_handle, NULL, "VEXP", "v")?
3952 0 : -EIO;
3953 case TPACPI_VIDEO_NEW:
3954 return acpi_evalf(NULL, NULL, "\\VEXP", "v")?
3955 0 : -EIO;
3956 default:
3957 return -ENOSYS;
3958 }
3959 /* not reached */
3960 }
3961
3962 static int video_read(char *p)
3963 {
3964 int status, autosw;
3965 int len = 0;
3966
3967 if (video_supported == TPACPI_VIDEO_NONE) {
3968 len += sprintf(p + len, "status:\t\tnot supported\n");
3969 return len;
3970 }
3971
3972 status = video_outputsw_get();
3973 if (status < 0)
3974 return status;
3975
3976 autosw = video_autosw_get();
3977 if (autosw < 0)
3978 return autosw;
3979
3980 len += sprintf(p + len, "status:\t\tsupported\n");
3981 len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0));
3982 len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1));
3983 if (video_supported == TPACPI_VIDEO_NEW)
3984 len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3));
3985 len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0));
3986 len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n");
3987 len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n");
3988 if (video_supported == TPACPI_VIDEO_NEW)
3989 len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n");
3990 len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n");
3991 len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n");
3992
3993 return len;
3994 }
3995
3996 static int video_write(char *buf)
3997 {
3998 char *cmd;
3999 int enable, disable, status;
4000 int res;
4001
4002 if (video_supported == TPACPI_VIDEO_NONE)
4003 return -ENODEV;
4004
4005 enable = 0;
4006 disable = 0;
4007
4008 while ((cmd = next_cmd(&buf))) {
4009 if (strlencmp(cmd, "lcd_enable") == 0) {
4010 enable |= TP_ACPI_VIDEO_S_LCD;
4011 } else if (strlencmp(cmd, "lcd_disable") == 0) {
4012 disable |= TP_ACPI_VIDEO_S_LCD;
4013 } else if (strlencmp(cmd, "crt_enable") == 0) {
4014 enable |= TP_ACPI_VIDEO_S_CRT;
4015 } else if (strlencmp(cmd, "crt_disable") == 0) {
4016 disable |= TP_ACPI_VIDEO_S_CRT;
4017 } else if (video_supported == TPACPI_VIDEO_NEW &&
4018 strlencmp(cmd, "dvi_enable") == 0) {
4019 enable |= TP_ACPI_VIDEO_S_DVI;
4020 } else if (video_supported == TPACPI_VIDEO_NEW &&
4021 strlencmp(cmd, "dvi_disable") == 0) {
4022 disable |= TP_ACPI_VIDEO_S_DVI;
4023 } else if (strlencmp(cmd, "auto_enable") == 0) {
4024 res = video_autosw_set(1);
4025 if (res)
4026 return res;
4027 } else if (strlencmp(cmd, "auto_disable") == 0) {
4028 res = video_autosw_set(0);
4029 if (res)
4030 return res;
4031 } else if (strlencmp(cmd, "video_switch") == 0) {
4032 res = video_outputsw_cycle();
4033 if (res)
4034 return res;
4035 } else if (strlencmp(cmd, "expand_toggle") == 0) {
4036 res = video_expand_toggle();
4037 if (res)
4038 return res;
4039 } else
4040 return -EINVAL;
4041 }
4042
4043 if (enable || disable) {
4044 status = video_outputsw_get();
4045 if (status < 0)
4046 return status;
4047 res = video_outputsw_set((status & ~disable) | enable);
4048 if (res)
4049 return res;
4050 }
4051
4052 return 0;
4053 }
4054
4055 static struct ibm_struct video_driver_data = {
4056 .name = "video",
4057 .read = video_read,
4058 .write = video_write,
4059 .exit = video_exit,
4060 };
4061
4062 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */
4063
4064 /*************************************************************************
4065 * Light (thinklight) subdriver
4066 */
4067
4068 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */
4069 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */
4070
4071 static int light_get_status(void)
4072 {
4073 int status = 0;
4074
4075 if (tp_features.light_status) {
4076 if (!acpi_evalf(ec_handle, &status, "KBLT", "d"))
4077 return -EIO;
4078 return (!!status);
4079 }
4080
4081 return -ENXIO;
4082 }
4083
4084 static int light_set_status(int status)
4085 {
4086 int rc;
4087
4088 if (tp_features.light) {
4089 if (cmos_handle) {
4090 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd",
4091 (status)?
4092 TP_CMOS_THINKLIGHT_ON :
4093 TP_CMOS_THINKLIGHT_OFF);
4094 } else {
4095 rc = acpi_evalf(lght_handle, NULL, NULL, "vd",
4096 (status)? 1 : 0);
4097 }
4098 return (rc)? 0 : -EIO;
4099 }
4100
4101 return -ENXIO;
4102 }
4103
4104 static void light_set_status_worker(struct work_struct *work)
4105 {
4106 struct tpacpi_led_classdev *data =
4107 container_of(work, struct tpacpi_led_classdev, work);
4108
4109 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4110 light_set_status((data->new_brightness != LED_OFF));
4111 }
4112
4113 static void light_sysfs_set(struct led_classdev *led_cdev,
4114 enum led_brightness brightness)
4115 {
4116 struct tpacpi_led_classdev *data =
4117 container_of(led_cdev,
4118 struct tpacpi_led_classdev,
4119 led_classdev);
4120 data->new_brightness = brightness;
4121 queue_work(tpacpi_wq, &data->work);
4122 }
4123
4124 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev)
4125 {
4126 return (light_get_status() == 1)? LED_FULL : LED_OFF;
4127 }
4128
4129 static struct tpacpi_led_classdev tpacpi_led_thinklight = {
4130 .led_classdev = {
4131 .name = "tpacpi::thinklight",
4132 .brightness_set = &light_sysfs_set,
4133 .brightness_get = &light_sysfs_get,
4134 }
4135 };
4136
4137 static int __init light_init(struct ibm_init_struct *iibm)
4138 {
4139 int rc;
4140
4141 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n");
4142
4143 TPACPI_ACPIHANDLE_INIT(ledb);
4144 TPACPI_ACPIHANDLE_INIT(lght);
4145 TPACPI_ACPIHANDLE_INIT(cmos);
4146 INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker);
4147
4148 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */
4149 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle;
4150
4151 if (tp_features.light)
4152 /* light status not supported on
4153 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */
4154 tp_features.light_status =
4155 acpi_evalf(ec_handle, NULL, "KBLT", "qv");
4156
4157 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n",
4158 str_supported(tp_features.light),
4159 str_supported(tp_features.light_status));
4160
4161 if (!tp_features.light)
4162 return 1;
4163
4164 rc = led_classdev_register(&tpacpi_pdev->dev,
4165 &tpacpi_led_thinklight.led_classdev);
4166
4167 if (rc < 0) {
4168 tp_features.light = 0;
4169 tp_features.light_status = 0;
4170 } else {
4171 rc = 0;
4172 }
4173
4174 return rc;
4175 }
4176
4177 static void light_exit(void)
4178 {
4179 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev);
4180 if (work_pending(&tpacpi_led_thinklight.work))
4181 flush_workqueue(tpacpi_wq);
4182 }
4183
4184 static int light_read(char *p)
4185 {
4186 int len = 0;
4187 int status;
4188
4189 if (!tp_features.light) {
4190 len += sprintf(p + len, "status:\t\tnot supported\n");
4191 } else if (!tp_features.light_status) {
4192 len += sprintf(p + len, "status:\t\tunknown\n");
4193 len += sprintf(p + len, "commands:\ton, off\n");
4194 } else {
4195 status = light_get_status();
4196 if (status < 0)
4197 return status;
4198 len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0));
4199 len += sprintf(p + len, "commands:\ton, off\n");
4200 }
4201
4202 return len;
4203 }
4204
4205 static int light_write(char *buf)
4206 {
4207 char *cmd;
4208 int newstatus = 0;
4209
4210 if (!tp_features.light)
4211 return -ENODEV;
4212
4213 while ((cmd = next_cmd(&buf))) {
4214 if (strlencmp(cmd, "on") == 0) {
4215 newstatus = 1;
4216 } else if (strlencmp(cmd, "off") == 0) {
4217 newstatus = 0;
4218 } else
4219 return -EINVAL;
4220 }
4221
4222 return light_set_status(newstatus);
4223 }
4224
4225 static struct ibm_struct light_driver_data = {
4226 .name = "light",
4227 .read = light_read,
4228 .write = light_write,
4229 .exit = light_exit,
4230 };
4231
4232 /*************************************************************************
4233 * Dock subdriver
4234 */
4235
4236 #ifdef CONFIG_THINKPAD_ACPI_DOCK
4237
4238 static void dock_notify(struct ibm_struct *ibm, u32 event);
4239 static int dock_read(char *p);
4240 static int dock_write(char *buf);
4241
4242 TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */
4243 "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */
4244 "\\_SB.PCI0.PCI1.DOCK", /* all others */
4245 "\\_SB.PCI.ISA.SLCE", /* 570 */
4246 ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */
4247
4248 /* don't list other alternatives as we install a notify handler on the 570 */
4249 TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */
4250
4251 static const struct acpi_device_id ibm_pci_device_ids[] = {
4252 {PCI_ROOT_HID_STRING, 0},
4253 {"", 0},
4254 };
4255
4256 static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = {
4257 {
4258 .notify = dock_notify,
4259 .handle = &dock_handle,
4260 .type = ACPI_SYSTEM_NOTIFY,
4261 },
4262 {
4263 /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING.
4264 * We just use it to get notifications of dock hotplug
4265 * in very old thinkpads */
4266 .hid = ibm_pci_device_ids,
4267 .notify = dock_notify,
4268 .handle = &pci_handle,
4269 .type = ACPI_SYSTEM_NOTIFY,
4270 },
4271 };
4272
4273 static struct ibm_struct dock_driver_data[2] = {
4274 {
4275 .name = "dock",
4276 .read = dock_read,
4277 .write = dock_write,
4278 .acpi = &ibm_dock_acpidriver[0],
4279 },
4280 {
4281 .name = "dock",
4282 .acpi = &ibm_dock_acpidriver[1],
4283 },
4284 };
4285
4286 #define dock_docked() (_sta(dock_handle) & 1)
4287
4288 static int __init dock_init(struct ibm_init_struct *iibm)
4289 {
4290 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n");
4291
4292 TPACPI_ACPIHANDLE_INIT(dock);
4293
4294 vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n",
4295 str_supported(dock_handle != NULL));
4296
4297 return (dock_handle)? 0 : 1;
4298 }
4299
4300 static int __init dock_init2(struct ibm_init_struct *iibm)
4301 {
4302 int dock2_needed;
4303
4304 vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n");
4305
4306 if (dock_driver_data[0].flags.acpi_driver_registered &&
4307 dock_driver_data[0].flags.acpi_notify_installed) {
4308 TPACPI_ACPIHANDLE_INIT(pci);
4309 dock2_needed = (pci_handle != NULL);
4310 vdbg_printk(TPACPI_DBG_INIT,
4311 "dock PCI handler for the TP 570 is %s\n",
4312 str_supported(dock2_needed));
4313 } else {
4314 vdbg_printk(TPACPI_DBG_INIT,
4315 "dock subdriver part 2 not required\n");
4316 dock2_needed = 0;
4317 }
4318
4319 return (dock2_needed)? 0 : 1;
4320 }
4321
4322 static void dock_notify(struct ibm_struct *ibm, u32 event)
4323 {
4324 int docked = dock_docked();
4325 int pci = ibm->acpi->hid && ibm->acpi->device &&
4326 acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids);
4327 int data;
4328
4329 if (event == 1 && !pci) /* 570 */
4330 data = 1; /* button */
4331 else if (event == 1 && pci) /* 570 */
4332 data = 3; /* dock */
4333 else if (event == 3 && docked)
4334 data = 1; /* button */
4335 else if (event == 3 && !docked)
4336 data = 2; /* undock */
4337 else if (event == 0 && docked)
4338 data = 3; /* dock */
4339 else {
4340 printk(TPACPI_ERR "unknown dock event %d, status %d\n",
4341 event, _sta(dock_handle));
4342 data = 0; /* unknown */
4343 }
4344 acpi_bus_generate_proc_event(ibm->acpi->device, event, data);
4345 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
4346 dev_name(&ibm->acpi->device->dev),
4347 event, data);
4348 }
4349
4350 static int dock_read(char *p)
4351 {
4352 int len = 0;
4353 int docked = dock_docked();
4354
4355 if (!dock_handle)
4356 len += sprintf(p + len, "status:\t\tnot supported\n");
4357 else if (!docked)
4358 len += sprintf(p + len, "status:\t\tundocked\n");
4359 else {
4360 len += sprintf(p + len, "status:\t\tdocked\n");
4361 len += sprintf(p + len, "commands:\tdock, undock\n");
4362 }
4363
4364 return len;
4365 }
4366
4367 static int dock_write(char *buf)
4368 {
4369 char *cmd;
4370
4371 if (!dock_docked())
4372 return -ENODEV;
4373
4374 while ((cmd = next_cmd(&buf))) {
4375 if (strlencmp(cmd, "undock") == 0) {
4376 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) ||
4377 !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1))
4378 return -EIO;
4379 } else if (strlencmp(cmd, "dock") == 0) {
4380 if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1))
4381 return -EIO;
4382 } else
4383 return -EINVAL;
4384 }
4385
4386 return 0;
4387 }
4388
4389 #endif /* CONFIG_THINKPAD_ACPI_DOCK */
4390
4391 /*************************************************************************
4392 * Bay subdriver
4393 */
4394
4395 #ifdef CONFIG_THINKPAD_ACPI_BAY
4396
4397 TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */
4398 "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */
4399 "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */
4400 "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */
4401 ); /* A21e, R30, R31 */
4402 TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */
4403 "_EJ0", /* all others */
4404 ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */
4405 TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */
4406 "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */
4407 ); /* all others */
4408 TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */
4409 "_EJ0", /* 770x */
4410 ); /* all others */
4411
4412 static int __init bay_init(struct ibm_init_struct *iibm)
4413 {
4414 vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n");
4415
4416 TPACPI_ACPIHANDLE_INIT(bay);
4417 if (bay_handle)
4418 TPACPI_ACPIHANDLE_INIT(bay_ej);
4419 TPACPI_ACPIHANDLE_INIT(bay2);
4420 if (bay2_handle)
4421 TPACPI_ACPIHANDLE_INIT(bay2_ej);
4422
4423 tp_features.bay_status = bay_handle &&
4424 acpi_evalf(bay_handle, NULL, "_STA", "qv");
4425 tp_features.bay_status2 = bay2_handle &&
4426 acpi_evalf(bay2_handle, NULL, "_STA", "qv");
4427
4428 tp_features.bay_eject = bay_handle && bay_ej_handle &&
4429 (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental);
4430 tp_features.bay_eject2 = bay2_handle && bay2_ej_handle &&
4431 (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental);
4432
4433 vdbg_printk(TPACPI_DBG_INIT,
4434 "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n",
4435 str_supported(tp_features.bay_status),
4436 str_supported(tp_features.bay_eject),
4437 str_supported(tp_features.bay_status2),
4438 str_supported(tp_features.bay_eject2));
4439
4440 return (tp_features.bay_status || tp_features.bay_eject ||
4441 tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1;
4442 }
4443
4444 static void bay_notify(struct ibm_struct *ibm, u32 event)
4445 {
4446 acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
4447 acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
4448 dev_name(&ibm->acpi->device->dev),
4449 event, 0);
4450 }
4451
4452 #define bay_occupied(b) (_sta(b##_handle) & 1)
4453
4454 static int bay_read(char *p)
4455 {
4456 int len = 0;
4457 int occupied = bay_occupied(bay);
4458 int occupied2 = bay_occupied(bay2);
4459 int eject, eject2;
4460
4461 len += sprintf(p + len, "status:\t\t%s\n",
4462 tp_features.bay_status ?
4463 (occupied ? "occupied" : "unoccupied") :
4464 "not supported");
4465 if (tp_features.bay_status2)
4466 len += sprintf(p + len, "status2:\t%s\n", occupied2 ?
4467 "occupied" : "unoccupied");
4468
4469 eject = tp_features.bay_eject && occupied;
4470 eject2 = tp_features.bay_eject2 && occupied2;
4471
4472 if (eject && eject2)
4473 len += sprintf(p + len, "commands:\teject, eject2\n");
4474 else if (eject)
4475 len += sprintf(p + len, "commands:\teject\n");
4476 else if (eject2)
4477 len += sprintf(p + len, "commands:\teject2\n");
4478
4479 return len;
4480 }
4481
4482 static int bay_write(char *buf)
4483 {
4484 char *cmd;
4485
4486 if (!tp_features.bay_eject && !tp_features.bay_eject2)
4487 return -ENODEV;
4488
4489 while ((cmd = next_cmd(&buf))) {
4490 if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) {
4491 if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1))
4492 return -EIO;
4493 } else if (tp_features.bay_eject2 &&
4494 strlencmp(cmd, "eject2") == 0) {
4495 if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1))
4496 return -EIO;
4497 } else
4498 return -EINVAL;
4499 }
4500
4501 return 0;
4502 }
4503
4504 static struct tp_acpi_drv_struct ibm_bay_acpidriver = {
4505 .notify = bay_notify,
4506 .handle = &bay_handle,
4507 .type = ACPI_SYSTEM_NOTIFY,
4508 };
4509
4510 static struct ibm_struct bay_driver_data = {
4511 .name = "bay",
4512 .read = bay_read,
4513 .write = bay_write,
4514 .acpi = &ibm_bay_acpidriver,
4515 };
4516
4517 #endif /* CONFIG_THINKPAD_ACPI_BAY */
4518
4519 /*************************************************************************
4520 * CMOS subdriver
4521 */
4522
4523 /* sysfs cmos_command -------------------------------------------------- */
4524 static ssize_t cmos_command_store(struct device *dev,
4525 struct device_attribute *attr,
4526 const char *buf, size_t count)
4527 {
4528 unsigned long cmos_cmd;
4529 int res;
4530
4531 if (parse_strtoul(buf, 21, &cmos_cmd))
4532 return -EINVAL;
4533
4534 res = issue_thinkpad_cmos_command(cmos_cmd);
4535 return (res)? res : count;
4536 }
4537
4538 static struct device_attribute dev_attr_cmos_command =
4539 __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store);
4540
4541 /* --------------------------------------------------------------------- */
4542
4543 static int __init cmos_init(struct ibm_init_struct *iibm)
4544 {
4545 int res;
4546
4547 vdbg_printk(TPACPI_DBG_INIT,
4548 "initializing cmos commands subdriver\n");
4549
4550 TPACPI_ACPIHANDLE_INIT(cmos);
4551
4552 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n",
4553 str_supported(cmos_handle != NULL));
4554
4555 res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4556 if (res)
4557 return res;
4558
4559 return (cmos_handle)? 0 : 1;
4560 }
4561
4562 static void cmos_exit(void)
4563 {
4564 device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command);
4565 }
4566
4567 static int cmos_read(char *p)
4568 {
4569 int len = 0;
4570
4571 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p,
4572 R30, R31, T20-22, X20-21 */
4573 if (!cmos_handle)
4574 len += sprintf(p + len, "status:\t\tnot supported\n");
4575 else {
4576 len += sprintf(p + len, "status:\t\tsupported\n");
4577 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n");
4578 }
4579
4580 return len;
4581 }
4582
4583 static int cmos_write(char *buf)
4584 {
4585 char *cmd;
4586 int cmos_cmd, res;
4587
4588 while ((cmd = next_cmd(&buf))) {
4589 if (sscanf(cmd, "%u", &cmos_cmd) == 1 &&
4590 cmos_cmd >= 0 && cmos_cmd <= 21) {
4591 /* cmos_cmd set */
4592 } else
4593 return -EINVAL;
4594
4595 res = issue_thinkpad_cmos_command(cmos_cmd);
4596 if (res)
4597 return res;
4598 }
4599
4600 return 0;
4601 }
4602
4603 static struct ibm_struct cmos_driver_data = {
4604 .name = "cmos",
4605 .read = cmos_read,
4606 .write = cmos_write,
4607 .exit = cmos_exit,
4608 };
4609
4610 /*************************************************************************
4611 * LED subdriver
4612 */
4613
4614 enum led_access_mode {
4615 TPACPI_LED_NONE = 0,
4616 TPACPI_LED_570, /* 570 */
4617 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4618 TPACPI_LED_NEW, /* all others */
4619 };
4620
4621 enum { /* For TPACPI_LED_OLD */
4622 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */
4623 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */
4624 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */
4625 };
4626
4627 enum led_status_t {
4628 TPACPI_LED_OFF = 0,
4629 TPACPI_LED_ON,
4630 TPACPI_LED_BLINK,
4631 };
4632
4633 static enum led_access_mode led_supported;
4634
4635 TPACPI_HANDLE(led, ec, "SLED", /* 570 */
4636 "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */
4637 /* T20-22, X20-21 */
4638 "LED", /* all others */
4639 ); /* R30, R31 */
4640
4641 #define TPACPI_LED_NUMLEDS 8
4642 static struct tpacpi_led_classdev *tpacpi_leds;
4643 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
4644 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
4645 /* there's a limit of 19 chars + NULL before 2.6.26 */
4646 "tpacpi::power",
4647 "tpacpi:orange:batt",
4648 "tpacpi:green:batt",
4649 "tpacpi::dock_active",
4650 "tpacpi::bay_active",
4651 "tpacpi::dock_batt",
4652 "tpacpi::unknown_led",
4653 "tpacpi::standby",
4654 };
4655
4656 static int led_get_status(const unsigned int led)
4657 {
4658 int status;
4659 enum led_status_t led_s;
4660
4661 switch (led_supported) {
4662 case TPACPI_LED_570:
4663 if (!acpi_evalf(ec_handle,
4664 &status, "GLED", "dd", 1 << led))
4665 return -EIO;
4666 led_s = (status == 0)?
4667 TPACPI_LED_OFF :
4668 ((status == 1)?
4669 TPACPI_LED_ON :
4670 TPACPI_LED_BLINK);
4671 tpacpi_led_state_cache[led] = led_s;
4672 return led_s;
4673 default:
4674 return -ENXIO;
4675 }
4676
4677 /* not reached */
4678 }
4679
4680 static int led_set_status(const unsigned int led,
4681 const enum led_status_t ledstatus)
4682 {
4683 /* off, on, blink. Index is led_status_t */
4684 static const unsigned int led_sled_arg1[] = { 0, 1, 3 };
4685 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 };
4686
4687 int rc = 0;
4688
4689 switch (led_supported) {
4690 case TPACPI_LED_570:
4691 /* 570 */
4692 if (led > 7)
4693 return -EINVAL;
4694 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4695 (1 << led), led_sled_arg1[ledstatus]))
4696 rc = -EIO;
4697 break;
4698 case TPACPI_LED_OLD:
4699 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
4700 if (led > 7)
4701 return -EINVAL;
4702 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led));
4703 if (rc >= 0)
4704 rc = ec_write(TPACPI_LED_EC_HLBL,
4705 (ledstatus == TPACPI_LED_BLINK) << led);
4706 if (rc >= 0)
4707 rc = ec_write(TPACPI_LED_EC_HLCL,
4708 (ledstatus != TPACPI_LED_OFF) << led);
4709 break;
4710 case TPACPI_LED_NEW:
4711 /* all others */
4712 if (!acpi_evalf(led_handle, NULL, NULL, "vdd",
4713 led, led_led_arg1[ledstatus]))
4714 rc = -EIO;
4715 break;
4716 default:
4717 rc = -ENXIO;
4718 }
4719
4720 if (!rc)
4721 tpacpi_led_state_cache[led] = ledstatus;
4722
4723 return rc;
4724 }
4725
4726 static void led_sysfs_set_status(unsigned int led,
4727 enum led_brightness brightness)
4728 {
4729 led_set_status(led,
4730 (brightness == LED_OFF) ?
4731 TPACPI_LED_OFF :
4732 (tpacpi_led_state_cache[led] == TPACPI_LED_BLINK) ?
4733 TPACPI_LED_BLINK : TPACPI_LED_ON);
4734 }
4735
4736 static void led_set_status_worker(struct work_struct *work)
4737 {
4738 struct tpacpi_led_classdev *data =
4739 container_of(work, struct tpacpi_led_classdev, work);
4740
4741 if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
4742 led_sysfs_set_status(data->led, data->new_brightness);
4743 }
4744
4745 static void led_sysfs_set(struct led_classdev *led_cdev,
4746 enum led_brightness brightness)
4747 {
4748 struct tpacpi_led_classdev *data = container_of(led_cdev,
4749 struct tpacpi_led_classdev, led_classdev);
4750
4751 data->new_brightness = brightness;
4752 queue_work(tpacpi_wq, &data->work);
4753 }
4754
4755 static int led_sysfs_blink_set(struct led_classdev *led_cdev,
4756 unsigned long *delay_on, unsigned long *delay_off)
4757 {
4758 struct tpacpi_led_classdev *data = container_of(led_cdev,
4759 struct tpacpi_led_classdev, led_classdev);
4760
4761 /* Can we choose the flash rate? */
4762 if (*delay_on == 0 && *delay_off == 0) {
4763 /* yes. set them to the hardware blink rate (1 Hz) */
4764 *delay_on = 500; /* ms */
4765 *delay_off = 500; /* ms */
4766 } else if ((*delay_on != 500) || (*delay_off != 500))
4767 return -EINVAL;
4768
4769 data->new_brightness = TPACPI_LED_BLINK;
4770 queue_work(tpacpi_wq, &data->work);
4771
4772 return 0;
4773 }
4774
4775 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev)
4776 {
4777 int rc;
4778
4779 struct tpacpi_led_classdev *data = container_of(led_cdev,
4780 struct tpacpi_led_classdev, led_classdev);
4781
4782 rc = led_get_status(data->led);
4783
4784 if (rc == TPACPI_LED_OFF || rc < 0)
4785 rc = LED_OFF; /* no error handling in led class :( */
4786 else
4787 rc = LED_FULL;
4788
4789 return rc;
4790 }
4791
4792 static void led_exit(void)
4793 {
4794 unsigned int i;
4795
4796 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4797 if (tpacpi_leds[i].led_classdev.name)
4798 led_classdev_unregister(&tpacpi_leds[i].led_classdev);
4799 }
4800
4801 kfree(tpacpi_leds);
4802 }
4803
4804 static int __init led_init(struct ibm_init_struct *iibm)
4805 {
4806 unsigned int i;
4807 int rc;
4808
4809 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
4810
4811 TPACPI_ACPIHANDLE_INIT(led);
4812
4813 if (!led_handle)
4814 /* led not supported on R30, R31 */
4815 led_supported = TPACPI_LED_NONE;
4816 else if (strlencmp(led_path, "SLED") == 0)
4817 /* 570 */
4818 led_supported = TPACPI_LED_570;
4819 else if (strlencmp(led_path, "SYSL") == 0)
4820 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */
4821 led_supported = TPACPI_LED_OLD;
4822 else
4823 /* all others */
4824 led_supported = TPACPI_LED_NEW;
4825
4826 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
4827 str_supported(led_supported), led_supported);
4828
4829 tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
4830 GFP_KERNEL);
4831 if (!tpacpi_leds) {
4832 printk(TPACPI_ERR "Out of memory for LED data\n");
4833 return -ENOMEM;
4834 }
4835
4836 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
4837 tpacpi_leds[i].led = i;
4838
4839 tpacpi_leds[i].led_classdev.brightness_set = &led_sysfs_set;
4840 tpacpi_leds[i].led_classdev.blink_set = &led_sysfs_blink_set;
4841 if (led_supported == TPACPI_LED_570)
4842 tpacpi_leds[i].led_classdev.brightness_get =
4843 &led_sysfs_get;
4844
4845 tpacpi_leds[i].led_classdev.name = tpacpi_led_names[i];
4846
4847 INIT_WORK(&tpacpi_leds[i].work, led_set_status_worker);
4848
4849 rc = led_classdev_register(&tpacpi_pdev->dev,
4850 &tpacpi_leds[i].led_classdev);
4851 if (rc < 0) {
4852 tpacpi_leds[i].led_classdev.name = NULL;
4853 led_exit();
4854 return rc;
4855 }
4856 }
4857
4858 return (led_supported != TPACPI_LED_NONE)? 0 : 1;
4859 }
4860
4861 #define str_led_status(s) \
4862 ((s) == TPACPI_LED_OFF ? "off" : \
4863 ((s) == TPACPI_LED_ON ? "on" : "blinking"))
4864
4865 static int led_read(char *p)
4866 {
4867 int len = 0;
4868
4869 if (!led_supported) {
4870 len += sprintf(p + len, "status:\t\tnot supported\n");
4871 return len;
4872 }
4873 len += sprintf(p + len, "status:\t\tsupported\n");
4874
4875 if (led_supported == TPACPI_LED_570) {
4876 /* 570 */
4877 int i, status;
4878 for (i = 0; i < 8; i++) {
4879 status = led_get_status(i);
4880 if (status < 0)
4881 return -EIO;
4882 len += sprintf(p + len, "%d:\t\t%s\n",
4883 i, str_led_status(status));
4884 }
4885 }
4886
4887 len += sprintf(p + len, "commands:\t"
4888 "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
4889
4890 return len;
4891 }
4892
4893 static int led_write(char *buf)
4894 {
4895 char *cmd;
4896 int led, rc;
4897 enum led_status_t s;
4898
4899 if (!led_supported)
4900 return -ENODEV;
4901
4902 while ((cmd = next_cmd(&buf))) {
4903 if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
4904 return -EINVAL;
4905
4906 if (strstr(cmd, "off")) {
4907 s = TPACPI_LED_OFF;
4908 } else if (strstr(cmd, "on")) {
4909 s = TPACPI_LED_ON;
4910 } else if (strstr(cmd, "blink")) {
4911 s = TPACPI_LED_BLINK;
4912 } else {
4913 return -EINVAL;
4914 }
4915
4916 rc = led_set_status(led, s);
4917 if (rc < 0)
4918 return rc;
4919 }
4920
4921 return 0;
4922 }
4923
4924 static struct ibm_struct led_driver_data = {
4925 .name = "led",
4926 .read = led_read,
4927 .write = led_write,
4928 .exit = led_exit,
4929 };
4930
4931 /*************************************************************************
4932 * Beep subdriver
4933 */
4934
4935 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */
4936
4937 static int __init beep_init(struct ibm_init_struct *iibm)
4938 {
4939 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
4940
4941 TPACPI_ACPIHANDLE_INIT(beep);
4942
4943 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
4944 str_supported(beep_handle != NULL));
4945
4946 return (beep_handle)? 0 : 1;
4947 }
4948
4949 static int beep_read(char *p)
4950 {
4951 int len = 0;
4952
4953 if (!beep_handle)
4954 len += sprintf(p + len, "status:\t\tnot supported\n");
4955 else {
4956 len += sprintf(p + len, "status:\t\tsupported\n");
4957 len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n");
4958 }
4959
4960 return len;
4961 }
4962
4963 static int beep_write(char *buf)
4964 {
4965 char *cmd;
4966 int beep_cmd;
4967
4968 if (!beep_handle)
4969 return -ENODEV;
4970
4971 while ((cmd = next_cmd(&buf))) {
4972 if (sscanf(cmd, "%u", &beep_cmd) == 1 &&
4973 beep_cmd >= 0 && beep_cmd <= 17) {
4974 /* beep_cmd set */
4975 } else
4976 return -EINVAL;
4977 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
4978 return -EIO;
4979 }
4980
4981 return 0;
4982 }
4983
4984 static struct ibm_struct beep_driver_data = {
4985 .name = "beep",
4986 .read = beep_read,
4987 .write = beep_write,
4988 };
4989
4990 /*************************************************************************
4991 * Thermal subdriver
4992 */
4993
4994 enum thermal_access_mode {
4995 TPACPI_THERMAL_NONE = 0, /* No thermal support */
4996 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */
4997 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */
4998 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */
4999 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */
5000 };
5001
5002 enum { /* TPACPI_THERMAL_TPEC_* */
5003 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
5004 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
5005 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
5006 };
5007
5008 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
5009 struct ibm_thermal_sensors_struct {
5010 s32 temp[TPACPI_MAX_THERMAL_SENSORS];
5011 };
5012
5013 static enum thermal_access_mode thermal_read_mode;
5014
5015 /* idx is zero-based */
5016 static int thermal_get_sensor(int idx, s32 *value)
5017 {
5018 int t;
5019 s8 tmp;
5020 char tmpi[5];
5021
5022 t = TP_EC_THERMAL_TMP0;
5023
5024 switch (thermal_read_mode) {
5025 #if TPACPI_MAX_THERMAL_SENSORS >= 16
5026 case TPACPI_THERMAL_TPEC_16:
5027 if (idx >= 8 && idx <= 15) {
5028 t = TP_EC_THERMAL_TMP8;
5029 idx -= 8;
5030 }
5031 /* fallthrough */
5032 #endif
5033 case TPACPI_THERMAL_TPEC_8:
5034 if (idx <= 7) {
5035 if (!acpi_ec_read(t + idx, &tmp))
5036 return -EIO;
5037 *value = tmp * 1000;
5038 return 0;
5039 }
5040 break;
5041
5042 case TPACPI_THERMAL_ACPI_UPDT:
5043 if (idx <= 7) {
5044 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5045 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v"))
5046 return -EIO;
5047 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5048 return -EIO;
5049 *value = (t - 2732) * 100;
5050 return 0;
5051 }
5052 break;
5053
5054 case TPACPI_THERMAL_ACPI_TMP07:
5055 if (idx <= 7) {
5056 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx);
5057 if (!acpi_evalf(ec_handle, &t, tmpi, "d"))
5058 return -EIO;
5059 if (t > 127 || t < -127)
5060 t = TP_EC_THERMAL_TMP_NA;
5061 *value = t * 1000;
5062 return 0;
5063 }
5064 break;
5065
5066 case TPACPI_THERMAL_NONE:
5067 default:
5068 return -ENOSYS;
5069 }
5070
5071 return -EINVAL;
5072 }
5073
5074 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
5075 {
5076 int res, i;
5077 int n;
5078
5079 n = 8;
5080 i = 0;
5081
5082 if (!s)
5083 return -EINVAL;
5084
5085 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
5086 n = 16;
5087
5088 for (i = 0 ; i < n; i++) {
5089 res = thermal_get_sensor(i, &s->temp[i]);
5090 if (res)
5091 return res;
5092 }
5093
5094 return n;
5095 }
5096
5097 /* sysfs temp##_input -------------------------------------------------- */
5098
5099 static ssize_t thermal_temp_input_show(struct device *dev,
5100 struct device_attribute *attr,
5101 char *buf)
5102 {
5103 struct sensor_device_attribute *sensor_attr =
5104 to_sensor_dev_attr(attr);
5105 int idx = sensor_attr->index;
5106 s32 value;
5107 int res;
5108
5109 res = thermal_get_sensor(idx, &value);
5110 if (res)
5111 return res;
5112 if (value == TP_EC_THERMAL_TMP_NA * 1000)
5113 return -ENXIO;
5114
5115 return snprintf(buf, PAGE_SIZE, "%d\n", value);
5116 }
5117
5118 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \
5119 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \
5120 thermal_temp_input_show, NULL, _idxB)
5121
5122 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = {
5123 THERMAL_SENSOR_ATTR_TEMP(1, 0),
5124 THERMAL_SENSOR_ATTR_TEMP(2, 1),
5125 THERMAL_SENSOR_ATTR_TEMP(3, 2),
5126 THERMAL_SENSOR_ATTR_TEMP(4, 3),
5127 THERMAL_SENSOR_ATTR_TEMP(5, 4),
5128 THERMAL_SENSOR_ATTR_TEMP(6, 5),
5129 THERMAL_SENSOR_ATTR_TEMP(7, 6),
5130 THERMAL_SENSOR_ATTR_TEMP(8, 7),
5131 THERMAL_SENSOR_ATTR_TEMP(9, 8),
5132 THERMAL_SENSOR_ATTR_TEMP(10, 9),
5133 THERMAL_SENSOR_ATTR_TEMP(11, 10),
5134 THERMAL_SENSOR_ATTR_TEMP(12, 11),
5135 THERMAL_SENSOR_ATTR_TEMP(13, 12),
5136 THERMAL_SENSOR_ATTR_TEMP(14, 13),
5137 THERMAL_SENSOR_ATTR_TEMP(15, 14),
5138 THERMAL_SENSOR_ATTR_TEMP(16, 15),
5139 };
5140
5141 #define THERMAL_ATTRS(X) \
5142 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr
5143
5144 static struct attribute *thermal_temp_input_attr[] = {
5145 THERMAL_ATTRS(8),
5146 THERMAL_ATTRS(9),
5147 THERMAL_ATTRS(10),
5148 THERMAL_ATTRS(11),
5149 THERMAL_ATTRS(12),
5150 THERMAL_ATTRS(13),
5151 THERMAL_ATTRS(14),
5152 THERMAL_ATTRS(15),
5153 THERMAL_ATTRS(0),
5154 THERMAL_ATTRS(1),
5155 THERMAL_ATTRS(2),
5156 THERMAL_ATTRS(3),
5157 THERMAL_ATTRS(4),
5158 THERMAL_ATTRS(5),
5159 THERMAL_ATTRS(6),
5160 THERMAL_ATTRS(7),
5161 NULL
5162 };
5163
5164 static const struct attribute_group thermal_temp_input16_group = {
5165 .attrs = thermal_temp_input_attr
5166 };
5167
5168 static const struct attribute_group thermal_temp_input8_group = {
5169 .attrs = &thermal_temp_input_attr[8]
5170 };
5171
5172 #undef THERMAL_SENSOR_ATTR_TEMP
5173 #undef THERMAL_ATTRS
5174
5175 /* --------------------------------------------------------------------- */
5176
5177 static int __init thermal_init(struct ibm_init_struct *iibm)
5178 {
5179 u8 t, ta1, ta2;
5180 int i;
5181 int acpi_tmp7;
5182 int res;
5183
5184 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n");
5185
5186 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
5187
5188 if (thinkpad_id.ec_model) {
5189 /*
5190 * Direct EC access mode: sensors at registers
5191 * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for
5192 * non-implemented, thermal sensors return 0x80 when
5193 * not available
5194 */
5195
5196 ta1 = ta2 = 0;
5197 for (i = 0; i < 8; i++) {
5198 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) {
5199 ta1 |= t;
5200 } else {
5201 ta1 = 0;
5202 break;
5203 }
5204 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) {
5205 ta2 |= t;
5206 } else {
5207 ta1 = 0;
5208 break;
5209 }
5210 }
5211 if (ta1 == 0) {
5212 /* This is sheer paranoia, but we handle it anyway */
5213 if (acpi_tmp7) {
5214 printk(TPACPI_ERR
5215 "ThinkPad ACPI EC access misbehaving, "
5216 "falling back to ACPI TMPx access "
5217 "mode\n");
5218 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
5219 } else {
5220 printk(TPACPI_ERR
5221 "ThinkPad ACPI EC access misbehaving, "
5222 "disabling thermal sensors access\n");
5223 thermal_read_mode = TPACPI_THERMAL_NONE;
5224 }
5225 } else {
5226 thermal_read_mode =
5227 (ta2 != 0) ?
5228 TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8;
5229 }
5230 } else if (acpi_tmp7) {
5231 if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
5232 /* 600e/x, 770e, 770x */
5233 thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT;
5234 } else {
5235 /* Standard ACPI TMPx access, max 8 sensors */
5236 thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07;
5237 }
5238 } else {
5239 /* temperatures not supported on 570, G4x, R30, R31, R32 */
5240 thermal_read_mode = TPACPI_THERMAL_NONE;
5241 }
5242
5243 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n",
5244 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE),
5245 thermal_read_mode);
5246
5247 switch (thermal_read_mode) {
5248 case TPACPI_THERMAL_TPEC_16:
5249 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5250 &thermal_temp_input16_group);
5251 if (res)
5252 return res;
5253 break;
5254 case TPACPI_THERMAL_TPEC_8:
5255 case TPACPI_THERMAL_ACPI_TMP07:
5256 case TPACPI_THERMAL_ACPI_UPDT:
5257 res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
5258 &thermal_temp_input8_group);
5259 if (res)
5260 return res;
5261 break;
5262 case TPACPI_THERMAL_NONE:
5263 default:
5264 return 1;
5265 }
5266
5267 return 0;
5268 }
5269
5270 static void thermal_exit(void)
5271 {
5272 switch (thermal_read_mode) {
5273 case TPACPI_THERMAL_TPEC_16:
5274 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
5275 &thermal_temp_input16_group);
5276 break;
5277 case TPACPI_THERMAL_TPEC_8:
5278 case TPACPI_THERMAL_ACPI_TMP07:
5279 case TPACPI_THERMAL_ACPI_UPDT:
5280 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
5281 &thermal_temp_input16_group);
5282 break;
5283 case TPACPI_THERMAL_NONE:
5284 default:
5285 break;
5286 }
5287 }
5288
5289 static int thermal_read(char *p)
5290 {
5291 int len = 0;
5292 int n, i;
5293 struct ibm_thermal_sensors_struct t;
5294
5295 n = thermal_get_sensors(&t);
5296 if (unlikely(n < 0))
5297 return n;
5298
5299 len += sprintf(p + len, "temperatures:\t");
5300
5301 if (n > 0) {
5302 for (i = 0; i < (n - 1); i++)
5303 len += sprintf(p + len, "%d ", t.temp[i] / 1000);
5304 len += sprintf(p + len, "%d\n", t.temp[i] / 1000);
5305 } else
5306 len += sprintf(p + len, "not supported\n");
5307
5308 return len;
5309 }
5310
5311 static struct ibm_struct thermal_driver_data = {
5312 .name = "thermal",
5313 .read = thermal_read,
5314 .exit = thermal_exit,
5315 };
5316
5317 /*************************************************************************
5318 * EC Dump subdriver
5319 */
5320
5321 static u8 ecdump_regs[256];
5322
5323 static int ecdump_read(char *p)
5324 {
5325 int len = 0;
5326 int i, j;
5327 u8 v;
5328
5329 len += sprintf(p + len, "EC "
5330 " +00 +01 +02 +03 +04 +05 +06 +07"
5331 " +08 +09 +0a +0b +0c +0d +0e +0f\n");
5332 for (i = 0; i < 256; i += 16) {
5333 len += sprintf(p + len, "EC 0x%02x:", i);
5334 for (j = 0; j < 16; j++) {
5335 if (!acpi_ec_read(i + j, &v))
5336 break;
5337 if (v != ecdump_regs[i + j])
5338 len += sprintf(p + len, " *%02x", v);
5339 else
5340 len += sprintf(p + len, " %02x", v);
5341 ecdump_regs[i + j] = v;
5342 }
5343 len += sprintf(p + len, "\n");
5344 if (j != 16)
5345 break;
5346 }
5347
5348 /* These are way too dangerous to advertise openly... */
5349 #if 0
5350 len += sprintf(p + len, "commands:\t0x<offset> 0x<value>"
5351 " (<offset> is 00-ff, <value> is 00-ff)\n");
5352 len += sprintf(p + len, "commands:\t0x<offset> <value> "
5353 " (<offset> is 00-ff, <value> is 0-255)\n");
5354 #endif
5355 return len;
5356 }
5357
5358 static int ecdump_write(char *buf)
5359 {
5360 char *cmd;
5361 int i, v;
5362
5363 while ((cmd = next_cmd(&buf))) {
5364 if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) {
5365 /* i and v set */
5366 } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) {
5367 /* i and v set */
5368 } else
5369 return -EINVAL;
5370 if (i >= 0 && i < 256 && v >= 0 && v < 256) {
5371 if (!acpi_ec_write(i, v))
5372 return -EIO;
5373 } else
5374 return -EINVAL;
5375 }
5376
5377 return 0;
5378 }
5379
5380 static struct ibm_struct ecdump_driver_data = {
5381 .name = "ecdump",
5382 .read = ecdump_read,
5383 .write = ecdump_write,
5384 .flags.experimental = 1,
5385 };
5386
5387 /*************************************************************************
5388 * Backlight/brightness subdriver
5389 */
5390
5391 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen"
5392
5393 enum {
5394 TP_EC_BACKLIGHT = 0x31,
5395
5396 /* TP_EC_BACKLIGHT bitmasks */
5397 TP_EC_BACKLIGHT_LVLMSK = 0x1F,
5398 TP_EC_BACKLIGHT_CMDMSK = 0xE0,
5399 TP_EC_BACKLIGHT_MAPSW = 0x20,
5400 };
5401
5402 static struct backlight_device *ibm_backlight_device;
5403 static int brightness_mode;
5404 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */
5405
5406 static struct mutex brightness_mutex;
5407
5408 /*
5409 * ThinkPads can read brightness from two places: EC 0x31, or
5410 * CMOS NVRAM byte 0x5E, bits 0-3.
5411 *
5412 * EC 0x31 has the following layout
5413 * Bit 7: unknown function
5414 * Bit 6: unknown function
5415 * Bit 5: Z: honour scale changes, NZ: ignore scale changes
5416 * Bit 4: must be set to zero to avoid problems
5417 * Bit 3-0: backlight brightness level
5418 *
5419 * brightness_get_raw returns status data in the EC 0x31 layout
5420 */
5421 static int brightness_get_raw(int *status)
5422 {
5423 u8 lec = 0, lcmos = 0, level = 0;
5424
5425 if (brightness_mode & 1) {
5426 if (!acpi_ec_read(TP_EC_BACKLIGHT, &lec))
5427 return -EIO;
5428 level = lec & TP_EC_BACKLIGHT_LVLMSK;
5429 };
5430 if (brightness_mode & 2) {
5431 lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS)
5432 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS)
5433 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS;
5434 lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07;
5435 level = lcmos;
5436 }
5437
5438 if (brightness_mode == 3) {
5439 *status = lec; /* Prefer EC, CMOS is just a backing store */
5440 lec &= TP_EC_BACKLIGHT_LVLMSK;
5441 if (lec == lcmos)
5442 tp_warned.bright_cmos_ec_unsync = 0;
5443 else {
5444 if (!tp_warned.bright_cmos_ec_unsync) {
5445 printk(TPACPI_ERR
5446 "CMOS NVRAM (%u) and EC (%u) do not "
5447 "agree on display brightness level\n",
5448 (unsigned int) lcmos,
5449 (unsigned int) lec);
5450 tp_warned.bright_cmos_ec_unsync = 1;
5451 }
5452 return -EIO;
5453 }
5454 } else {
5455 *status = level;
5456 }
5457
5458 return 0;
5459 }
5460
5461 /* May return EINTR which can always be mapped to ERESTARTSYS */
5462 static int brightness_set(int value)
5463 {
5464 int cmos_cmd, inc, i, res;
5465 int current_value;
5466 int command_bits;
5467
5468 if (value > ((tp_features.bright_16levels)? 15 : 7) ||
5469 value < 0)
5470 return -EINVAL;
5471
5472 res = mutex_lock_killable(&brightness_mutex);
5473 if (res < 0)
5474 return res;
5475
5476 res = brightness_get_raw(&current_value);
5477 if (res < 0)
5478 goto errout;
5479
5480 command_bits = current_value & TP_EC_BACKLIGHT_CMDMSK;
5481 current_value &= TP_EC_BACKLIGHT_LVLMSK;
5482
5483 cmos_cmd = value > current_value ?
5484 TP_CMOS_BRIGHTNESS_UP :
5485 TP_CMOS_BRIGHTNESS_DOWN;
5486 inc = (value > current_value)? 1 : -1;
5487
5488 res = 0;
5489 for (i = current_value; i != value; i += inc) {
5490 if ((brightness_mode & 2) &&
5491 issue_thinkpad_cmos_command(cmos_cmd)) {
5492 res = -EIO;
5493 goto errout;
5494 }
5495 if ((brightness_mode & 1) &&
5496 !acpi_ec_write(TP_EC_BACKLIGHT,
5497 (i + inc) | command_bits)) {
5498 res = -EIO;
5499 goto errout;;
5500 }
5501 }
5502
5503 errout:
5504 mutex_unlock(&brightness_mutex);
5505 return res;
5506 }
5507
5508 /* sysfs backlight class ----------------------------------------------- */
5509
5510 static int brightness_update_status(struct backlight_device *bd)
5511 {
5512 /* it is the backlight class's job (caller) to handle
5513 * EINTR and other errors properly */
5514 return brightness_set(
5515 (bd->props.fb_blank == FB_BLANK_UNBLANK &&
5516 bd->props.power == FB_BLANK_UNBLANK) ?
5517 bd->props.brightness : 0);
5518 }
5519
5520 static int brightness_get(struct backlight_device *bd)
5521 {
5522 int status, res;
5523
5524 res = brightness_get_raw(&status);
5525 if (res < 0)
5526 return 0; /* FIXME: teach backlight about error handling */
5527
5528 return status & TP_EC_BACKLIGHT_LVLMSK;
5529 }
5530
5531 static struct backlight_ops ibm_backlight_data = {
5532 .get_brightness = brightness_get,
5533 .update_status = brightness_update_status,
5534 };
5535
5536 /* --------------------------------------------------------------------- */
5537
5538 static int __init brightness_init(struct ibm_init_struct *iibm)
5539 {
5540 int b;
5541
5542 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n");
5543
5544 mutex_init(&brightness_mutex);
5545
5546 /*
5547 * We always attempt to detect acpi support, so as to switch
5548 * Lenovo Vista BIOS to ACPI brightness mode even if we are not
5549 * going to publish a backlight interface
5550 */
5551 b = tpacpi_check_std_acpi_brightness_support();
5552 if (b > 0) {
5553 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) {
5554 printk(TPACPI_NOTICE
5555 "Lenovo BIOS switched to ACPI backlight "
5556 "control mode\n");
5557 }
5558 if (brightness_enable > 1) {
5559 printk(TPACPI_NOTICE
5560 "standard ACPI backlight interface "
5561 "available, not loading native one...\n");
5562 return 1;
5563 }
5564 }
5565
5566 if (!brightness_enable) {
5567 dbg_printk(TPACPI_DBG_INIT,
5568 "brightness support disabled by "
5569 "module parameter\n");
5570 return 1;
5571 }
5572
5573 if (b > 16) {
5574 printk(TPACPI_ERR
5575 "Unsupported brightness interface, "
5576 "please contact %s\n", TPACPI_MAIL);
5577 return 1;
5578 }
5579 if (b == 16)
5580 tp_features.bright_16levels = 1;
5581
5582 if (!brightness_mode) {
5583 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO)
5584 brightness_mode = 2;
5585 else
5586 brightness_mode = 3;
5587
5588 dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n",
5589 brightness_mode);
5590 }
5591
5592 if (brightness_mode > 3)
5593 return -EINVAL;
5594
5595 if (brightness_get_raw(&b) < 0)
5596 return 1;
5597
5598 if (tp_features.bright_16levels)
5599 printk(TPACPI_INFO
5600 "detected a 16-level brightness capable ThinkPad\n");
5601
5602 ibm_backlight_device = backlight_device_register(
5603 TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL,
5604 &ibm_backlight_data);
5605 if (IS_ERR(ibm_backlight_device)) {
5606 printk(TPACPI_ERR "Could not register backlight device\n");
5607 return PTR_ERR(ibm_backlight_device);
5608 }
5609 vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n");
5610
5611 ibm_backlight_device->props.max_brightness =
5612 (tp_features.bright_16levels)? 15 : 7;
5613 ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
5614 backlight_update_status(ibm_backlight_device);
5615
5616 return 0;
5617 }
5618
5619 static void brightness_exit(void)
5620 {
5621 if (ibm_backlight_device) {
5622 vdbg_printk(TPACPI_DBG_EXIT,
5623 "calling backlight_device_unregister()\n");
5624 backlight_device_unregister(ibm_backlight_device);
5625 }
5626 }
5627
5628 static int brightness_read(char *p)
5629 {
5630 int len = 0;
5631 int level;
5632
5633 level = brightness_get(NULL);
5634 if (level < 0) {
5635 len += sprintf(p + len, "level:\t\tunreadable\n");
5636 } else {
5637 len += sprintf(p + len, "level:\t\t%d\n", level);
5638 len += sprintf(p + len, "commands:\tup, down\n");
5639 len += sprintf(p + len, "commands:\tlevel <level>"
5640 " (<level> is 0-%d)\n",
5641 (tp_features.bright_16levels) ? 15 : 7);
5642 }
5643
5644 return len;
5645 }
5646
5647 static int brightness_write(char *buf)
5648 {
5649 int level;
5650 int rc;
5651 char *cmd;
5652 int max_level = (tp_features.bright_16levels) ? 15 : 7;
5653
5654 level = brightness_get(NULL);
5655 if (level < 0)
5656 return level;
5657
5658 while ((cmd = next_cmd(&buf))) {
5659 if (strlencmp(cmd, "up") == 0) {
5660 if (level < max_level)
5661 level++;
5662 } else if (strlencmp(cmd, "down") == 0) {
5663 if (level > 0)
5664 level--;
5665 } else if (sscanf(cmd, "level %d", &level) == 1 &&
5666 level >= 0 && level <= max_level) {
5667 /* new level set */
5668 } else
5669 return -EINVAL;
5670 }
5671
5672 /*
5673 * Now we know what the final level should be, so we try to set it.
5674 * Doing it this way makes the syscall restartable in case of EINTR
5675 */
5676 rc = brightness_set(level);
5677 return (rc == -EINTR)? ERESTARTSYS : rc;
5678 }
5679
5680 static struct ibm_struct brightness_driver_data = {
5681 .name = "brightness",
5682 .read = brightness_read,
5683 .write = brightness_write,
5684 .exit = brightness_exit,
5685 };
5686
5687 /*************************************************************************
5688 * Volume subdriver
5689 */
5690
5691 static int volume_offset = 0x30;
5692
5693 static int volume_read(char *p)
5694 {
5695 int len = 0;
5696 u8 level;
5697
5698 if (!acpi_ec_read(volume_offset, &level)) {
5699 len += sprintf(p + len, "level:\t\tunreadable\n");
5700 } else {
5701 len += sprintf(p + len, "level:\t\t%d\n", level & 0xf);
5702 len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6));
5703 len += sprintf(p + len, "commands:\tup, down, mute\n");
5704 len += sprintf(p + len, "commands:\tlevel <level>"
5705 " (<level> is 0-15)\n");
5706 }
5707
5708 return len;
5709 }
5710
5711 static int volume_write(char *buf)
5712 {
5713 int cmos_cmd, inc, i;
5714 u8 level, mute;
5715 int new_level, new_mute;
5716 char *cmd;
5717
5718 while ((cmd = next_cmd(&buf))) {
5719 if (!acpi_ec_read(volume_offset, &level))
5720 return -EIO;
5721 new_mute = mute = level & 0x40;
5722 new_level = level = level & 0xf;
5723
5724 if (strlencmp(cmd, "up") == 0) {
5725 if (mute)
5726 new_mute = 0;
5727 else
5728 new_level = level == 15 ? 15 : level + 1;
5729 } else if (strlencmp(cmd, "down") == 0) {
5730 if (mute)
5731 new_mute = 0;
5732 else
5733 new_level = level == 0 ? 0 : level - 1;
5734 } else if (sscanf(cmd, "level %d", &new_level) == 1 &&
5735 new_level >= 0 && new_level <= 15) {
5736 /* new_level set */
5737 } else if (strlencmp(cmd, "mute") == 0) {
5738 new_mute = 0x40;
5739 } else
5740 return -EINVAL;
5741
5742 if (new_level != level) {
5743 /* mute doesn't change */
5744
5745 cmos_cmd = (new_level > level) ?
5746 TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN;
5747 inc = new_level > level ? 1 : -1;
5748
5749 if (mute && (issue_thinkpad_cmos_command(cmos_cmd) ||
5750 !acpi_ec_write(volume_offset, level)))
5751 return -EIO;
5752
5753 for (i = level; i != new_level; i += inc)
5754 if (issue_thinkpad_cmos_command(cmos_cmd) ||
5755 !acpi_ec_write(volume_offset, i + inc))
5756 return -EIO;
5757
5758 if (mute &&
5759 (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) ||
5760 !acpi_ec_write(volume_offset, new_level + mute))) {
5761 return -EIO;
5762 }
5763 }
5764
5765 if (new_mute != mute) {
5766 /* level doesn't change */
5767
5768 cmos_cmd = (new_mute) ?
5769 TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP;
5770
5771 if (issue_thinkpad_cmos_command(cmos_cmd) ||
5772 !acpi_ec_write(volume_offset, level + new_mute))
5773 return -EIO;
5774 }
5775 }
5776
5777 return 0;
5778 }
5779
5780 static struct ibm_struct volume_driver_data = {
5781 .name = "volume",
5782 .read = volume_read,
5783 .write = volume_write,
5784 };
5785
5786 /*************************************************************************
5787 * Fan subdriver
5788 */
5789
5790 /*
5791 * FAN ACCESS MODES
5792 *
5793 * TPACPI_FAN_RD_ACPI_GFAN:
5794 * ACPI GFAN method: returns fan level
5795 *
5796 * see TPACPI_FAN_WR_ACPI_SFAN
5797 * EC 0x2f (HFSP) not available if GFAN exists
5798 *
5799 * TPACPI_FAN_WR_ACPI_SFAN:
5800 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max)
5801 *
5802 * EC 0x2f (HFSP) might be available *for reading*, but do not use
5803 * it for writing.
5804 *
5805 * TPACPI_FAN_WR_TPEC:
5806 * ThinkPad EC register 0x2f (HFSP): fan control loop mode
5807 * Supported on almost all ThinkPads
5808 *
5809 * Fan speed changes of any sort (including those caused by the
5810 * disengaged mode) are usually done slowly by the firmware as the
5811 * maximum ammount of fan duty cycle change per second seems to be
5812 * limited.
5813 *
5814 * Reading is not available if GFAN exists.
5815 * Writing is not available if SFAN exists.
5816 *
5817 * Bits
5818 * 7 automatic mode engaged;
5819 * (default operation mode of the ThinkPad)
5820 * fan level is ignored in this mode.
5821 * 6 full speed mode (takes precedence over bit 7);
5822 * not available on all thinkpads. May disable
5823 * the tachometer while the fan controller ramps up
5824 * the speed (which can take up to a few *minutes*).
5825 * Speeds up fan to 100% duty-cycle, which is far above
5826 * the standard RPM levels. It is not impossible that
5827 * it could cause hardware damage.
5828 * 5-3 unused in some models. Extra bits for fan level
5829 * in others, but still useless as all values above
5830 * 7 map to the same speed as level 7 in these models.
5831 * 2-0 fan level (0..7 usually)
5832 * 0x00 = stop
5833 * 0x07 = max (set when temperatures critical)
5834 * Some ThinkPads may have other levels, see
5835 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41)
5836 *
5837 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at
5838 * boot. Apparently the EC does not intialize it, so unless ACPI DSDT
5839 * does so, its initial value is meaningless (0x07).
5840 *
5841 * For firmware bugs, refer to:
5842 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5843 *
5844 * ----
5845 *
5846 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB):
5847 * Main fan tachometer reading (in RPM)
5848 *
5849 * This register is present on all ThinkPads with a new-style EC, and
5850 * it is known not to be present on the A21m/e, and T22, as there is
5851 * something else in offset 0x84 according to the ACPI DSDT. Other
5852 * ThinkPads from this same time period (and earlier) probably lack the
5853 * tachometer as well.
5854 *
5855 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware
5856 * was never fixed by IBM to report the EC firmware version string
5857 * probably support the tachometer (like the early X models), so
5858 * detecting it is quite hard. We need more data to know for sure.
5859 *
5860 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings
5861 * might result.
5862 *
5863 * FIRMWARE BUG: may go stale while the EC is switching to full speed
5864 * mode.
5865 *
5866 * For firmware bugs, refer to:
5867 * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
5868 *
5869 * TPACPI_FAN_WR_ACPI_FANS:
5870 * ThinkPad X31, X40, X41. Not available in the X60.
5871 *
5872 * FANS ACPI handle: takes three arguments: low speed, medium speed,
5873 * high speed. ACPI DSDT seems to map these three speeds to levels
5874 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH
5875 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3")
5876 *
5877 * The speeds are stored on handles
5878 * (FANA:FAN9), (FANC:FANB), (FANE:FAND).
5879 *
5880 * There are three default speed sets, acessible as handles:
5881 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H
5882 *
5883 * ACPI DSDT switches which set is in use depending on various
5884 * factors.
5885 *
5886 * TPACPI_FAN_WR_TPEC is also available and should be used to
5887 * command the fan. The X31/X40/X41 seems to have 8 fan levels,
5888 * but the ACPI tables just mention level 7.
5889 */
5890
5891 enum { /* Fan control constants */
5892 fan_status_offset = 0x2f, /* EC register 0x2f */
5893 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM)
5894 * 0x84 must be read before 0x85 */
5895
5896 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */
5897 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */
5898
5899 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */
5900 };
5901
5902 enum fan_status_access_mode {
5903 TPACPI_FAN_NONE = 0, /* No fan status or control */
5904 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */
5905 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */
5906 };
5907
5908 enum fan_control_access_mode {
5909 TPACPI_FAN_WR_NONE = 0, /* No fan control */
5910 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */
5911 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */
5912 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */
5913 };
5914
5915 enum fan_control_commands {
5916 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */
5917 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */
5918 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd,
5919 * and also watchdog cmd */
5920 };
5921
5922 static int fan_control_allowed;
5923
5924 static enum fan_status_access_mode fan_status_access_mode;
5925 static enum fan_control_access_mode fan_control_access_mode;
5926 static enum fan_control_commands fan_control_commands;
5927
5928 static u8 fan_control_initial_status;
5929 static u8 fan_control_desired_level;
5930 static u8 fan_control_resume_level;
5931 static int fan_watchdog_maxinterval;
5932
5933 static struct mutex fan_mutex;
5934
5935 static void fan_watchdog_fire(struct work_struct *ignored);
5936 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire);
5937
5938 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */
5939 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */
5940 "\\FSPD", /* 600e/x, 770e, 770x */
5941 ); /* all others */
5942 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */
5943 "JFNS", /* 770x-JL */
5944 ); /* all others */
5945
5946 /*
5947 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the
5948 * HFSP register at boot, so it contains 0x07 but the Thinkpad could
5949 * be in auto mode (0x80).
5950 *
5951 * This is corrected by any write to HFSP either by the driver, or
5952 * by the firmware.
5953 *
5954 * We assume 0x07 really means auto mode while this quirk is active,
5955 * as this is far more likely than the ThinkPad being in level 7,
5956 * which is only used by the firmware during thermal emergencies.
5957 */
5958
5959 static void fan_quirk1_detect(void)
5960 {
5961 /* In some ThinkPads, neither the EC nor the ACPI
5962 * DSDT initialize the HFSP register, and it ends up
5963 * being initially set to 0x07 when it *could* be
5964 * either 0x07 or 0x80.
5965 *
5966 * Enable for TP-1Y (T43), TP-78 (R51e),
5967 * TP-76 (R52), TP-70 (T43, R52), which are known
5968 * to be buggy. */
5969 if (fan_control_initial_status == 0x07) {
5970 switch (thinkpad_id.ec_model) {
5971 case 0x5931: /* TP-1Y */
5972 case 0x3837: /* TP-78 */
5973 case 0x3637: /* TP-76 */
5974 case 0x3037: /* TP-70 */
5975 printk(TPACPI_NOTICE
5976 "fan_init: initial fan status is unknown, "
5977 "assuming it is in auto mode\n");
5978 tp_features.fan_ctrl_status_undef = 1;
5979 ;;
5980 }
5981 }
5982 }
5983
5984 static void fan_quirk1_handle(u8 *fan_status)
5985 {
5986 if (unlikely(tp_features.fan_ctrl_status_undef)) {
5987 if (*fan_status != fan_control_initial_status) {
5988 /* something changed the HFSP regisnter since
5989 * driver init time, so it is not undefined
5990 * anymore */
5991 tp_features.fan_ctrl_status_undef = 0;
5992 } else {
5993 /* Return most likely status. In fact, it
5994 * might be the only possible status */
5995 *fan_status = TP_EC_FAN_AUTO;
5996 }
5997 }
5998 }
5999
6000 /*
6001 * Call with fan_mutex held
6002 */
6003 static void fan_update_desired_level(u8 status)
6004 {
6005 if ((status &
6006 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6007 if (status > 7)
6008 fan_control_desired_level = 7;
6009 else
6010 fan_control_desired_level = status;
6011 }
6012 }
6013
6014 static int fan_get_status(u8 *status)
6015 {
6016 u8 s;
6017
6018 /* TODO:
6019 * Add TPACPI_FAN_RD_ACPI_FANS ? */
6020
6021 switch (fan_status_access_mode) {
6022 case TPACPI_FAN_RD_ACPI_GFAN:
6023 /* 570, 600e/x, 770e, 770x */
6024
6025 if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d")))
6026 return -EIO;
6027
6028 if (likely(status))
6029 *status = s & 0x07;
6030
6031 break;
6032
6033 case TPACPI_FAN_RD_TPEC:
6034 /* all except 570, 600e/x, 770e, 770x */
6035 if (unlikely(!acpi_ec_read(fan_status_offset, &s)))
6036 return -EIO;
6037
6038 if (likely(status)) {
6039 *status = s;
6040 fan_quirk1_handle(status);
6041 }
6042
6043 break;
6044
6045 default:
6046 return -ENXIO;
6047 }
6048
6049 return 0;
6050 }
6051
6052 static int fan_get_status_safe(u8 *status)
6053 {
6054 int rc;
6055 u8 s;
6056
6057 if (mutex_lock_killable(&fan_mutex))
6058 return -ERESTARTSYS;
6059 rc = fan_get_status(&s);
6060 if (!rc)
6061 fan_update_desired_level(s);
6062 mutex_unlock(&fan_mutex);
6063
6064 if (status)
6065 *status = s;
6066
6067 return rc;
6068 }
6069
6070 static int fan_get_speed(unsigned int *speed)
6071 {
6072 u8 hi, lo;
6073
6074 switch (fan_status_access_mode) {
6075 case TPACPI_FAN_RD_TPEC:
6076 /* all except 570, 600e/x, 770e, 770x */
6077 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
6078 !acpi_ec_read(fan_rpm_offset + 1, &hi)))
6079 return -EIO;
6080
6081 if (likely(speed))
6082 *speed = (hi << 8) | lo;
6083
6084 break;
6085
6086 default:
6087 return -ENXIO;
6088 }
6089
6090 return 0;
6091 }
6092
6093 static int fan_set_level(int level)
6094 {
6095 if (!fan_control_allowed)
6096 return -EPERM;
6097
6098 switch (fan_control_access_mode) {
6099 case TPACPI_FAN_WR_ACPI_SFAN:
6100 if (level >= 0 && level <= 7) {
6101 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level))
6102 return -EIO;
6103 } else
6104 return -EINVAL;
6105 break;
6106
6107 case TPACPI_FAN_WR_ACPI_FANS:
6108 case TPACPI_FAN_WR_TPEC:
6109 if (!(level & TP_EC_FAN_AUTO) &&
6110 !(level & TP_EC_FAN_FULLSPEED) &&
6111 ((level < 0) || (level > 7)))
6112 return -EINVAL;
6113
6114 /* safety net should the EC not support AUTO
6115 * or FULLSPEED mode bits and just ignore them */
6116 if (level & TP_EC_FAN_FULLSPEED)
6117 level |= 7; /* safety min speed 7 */
6118 else if (level & TP_EC_FAN_AUTO)
6119 level |= 4; /* safety min speed 4 */
6120
6121 if (!acpi_ec_write(fan_status_offset, level))
6122 return -EIO;
6123 else
6124 tp_features.fan_ctrl_status_undef = 0;
6125 break;
6126
6127 default:
6128 return -ENXIO;
6129 }
6130 return 0;
6131 }
6132
6133 static int fan_set_level_safe(int level)
6134 {
6135 int rc;
6136
6137 if (!fan_control_allowed)
6138 return -EPERM;
6139
6140 if (mutex_lock_killable(&fan_mutex))
6141 return -ERESTARTSYS;
6142
6143 if (level == TPACPI_FAN_LAST_LEVEL)
6144 level = fan_control_desired_level;
6145
6146 rc = fan_set_level(level);
6147 if (!rc)
6148 fan_update_desired_level(level);
6149
6150 mutex_unlock(&fan_mutex);
6151 return rc;
6152 }
6153
6154 static int fan_set_enable(void)
6155 {
6156 u8 s;
6157 int rc;
6158
6159 if (!fan_control_allowed)
6160 return -EPERM;
6161
6162 if (mutex_lock_killable(&fan_mutex))
6163 return -ERESTARTSYS;
6164
6165 switch (fan_control_access_mode) {
6166 case TPACPI_FAN_WR_ACPI_FANS:
6167 case TPACPI_FAN_WR_TPEC:
6168 rc = fan_get_status(&s);
6169 if (rc < 0)
6170 break;
6171
6172 /* Don't go out of emergency fan mode */
6173 if (s != 7) {
6174 s &= 0x07;
6175 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */
6176 }
6177
6178 if (!acpi_ec_write(fan_status_offset, s))
6179 rc = -EIO;
6180 else {
6181 tp_features.fan_ctrl_status_undef = 0;
6182 rc = 0;
6183 }
6184 break;
6185
6186 case TPACPI_FAN_WR_ACPI_SFAN:
6187 rc = fan_get_status(&s);
6188 if (rc < 0)
6189 break;
6190
6191 s &= 0x07;
6192
6193 /* Set fan to at least level 4 */
6194 s |= 4;
6195
6196 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s))
6197 rc = -EIO;
6198 else
6199 rc = 0;
6200 break;
6201
6202 default:
6203 rc = -ENXIO;
6204 }
6205
6206 mutex_unlock(&fan_mutex);
6207 return rc;
6208 }
6209
6210 static int fan_set_disable(void)
6211 {
6212 int rc;
6213
6214 if (!fan_control_allowed)
6215 return -EPERM;
6216
6217 if (mutex_lock_killable(&fan_mutex))
6218 return -ERESTARTSYS;
6219
6220 rc = 0;
6221 switch (fan_control_access_mode) {
6222 case TPACPI_FAN_WR_ACPI_FANS:
6223 case TPACPI_FAN_WR_TPEC:
6224 if (!acpi_ec_write(fan_status_offset, 0x00))
6225 rc = -EIO;
6226 else {
6227 fan_control_desired_level = 0;
6228 tp_features.fan_ctrl_status_undef = 0;
6229 }
6230 break;
6231
6232 case TPACPI_FAN_WR_ACPI_SFAN:
6233 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00))
6234 rc = -EIO;
6235 else
6236 fan_control_desired_level = 0;
6237 break;
6238
6239 default:
6240 rc = -ENXIO;
6241 }
6242
6243
6244 mutex_unlock(&fan_mutex);
6245 return rc;
6246 }
6247
6248 static int fan_set_speed(int speed)
6249 {
6250 int rc;
6251
6252 if (!fan_control_allowed)
6253 return -EPERM;
6254
6255 if (mutex_lock_killable(&fan_mutex))
6256 return -ERESTARTSYS;
6257
6258 rc = 0;
6259 switch (fan_control_access_mode) {
6260 case TPACPI_FAN_WR_ACPI_FANS:
6261 if (speed >= 0 && speed <= 65535) {
6262 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd",
6263 speed, speed, speed))
6264 rc = -EIO;
6265 } else
6266 rc = -EINVAL;
6267 break;
6268
6269 default:
6270 rc = -ENXIO;
6271 }
6272
6273 mutex_unlock(&fan_mutex);
6274 return rc;
6275 }
6276
6277 static void fan_watchdog_reset(void)
6278 {
6279 static int fan_watchdog_active;
6280
6281 if (fan_control_access_mode == TPACPI_FAN_WR_NONE)
6282 return;
6283
6284 if (fan_watchdog_active)
6285 cancel_delayed_work(&fan_watchdog_task);
6286
6287 if (fan_watchdog_maxinterval > 0 &&
6288 tpacpi_lifecycle != TPACPI_LIFE_EXITING) {
6289 fan_watchdog_active = 1;
6290 if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task,
6291 msecs_to_jiffies(fan_watchdog_maxinterval
6292 * 1000))) {
6293 printk(TPACPI_ERR
6294 "failed to queue the fan watchdog, "
6295 "watchdog will not trigger\n");
6296 }
6297 } else
6298 fan_watchdog_active = 0;
6299 }
6300
6301 static void fan_watchdog_fire(struct work_struct *ignored)
6302 {
6303 int rc;
6304
6305 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING)
6306 return;
6307
6308 printk(TPACPI_NOTICE "fan watchdog: enabling fan\n");
6309 rc = fan_set_enable();
6310 if (rc < 0) {
6311 printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, "
6312 "will try again later...\n", -rc);
6313 /* reschedule for later */
6314 fan_watchdog_reset();
6315 }
6316 }
6317
6318 /*
6319 * SYSFS fan layout: hwmon compatible (device)
6320 *
6321 * pwm*_enable:
6322 * 0: "disengaged" mode
6323 * 1: manual mode
6324 * 2: native EC "auto" mode (recommended, hardware default)
6325 *
6326 * pwm*: set speed in manual mode, ignored otherwise.
6327 * 0 is level 0; 255 is level 7. Intermediate points done with linear
6328 * interpolation.
6329 *
6330 * fan*_input: tachometer reading, RPM
6331 *
6332 *
6333 * SYSFS fan layout: extensions
6334 *
6335 * fan_watchdog (driver):
6336 * fan watchdog interval in seconds, 0 disables (default), max 120
6337 */
6338
6339 /* sysfs fan pwm1_enable ----------------------------------------------- */
6340 static ssize_t fan_pwm1_enable_show(struct device *dev,
6341 struct device_attribute *attr,
6342 char *buf)
6343 {
6344 int res, mode;
6345 u8 status;
6346
6347 res = fan_get_status_safe(&status);
6348 if (res)
6349 return res;
6350
6351 if (status & TP_EC_FAN_FULLSPEED) {
6352 mode = 0;
6353 } else if (status & TP_EC_FAN_AUTO) {
6354 mode = 2;
6355 } else
6356 mode = 1;
6357
6358 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
6359 }
6360
6361 static ssize_t fan_pwm1_enable_store(struct device *dev,
6362 struct device_attribute *attr,
6363 const char *buf, size_t count)
6364 {
6365 unsigned long t;
6366 int res, level;
6367
6368 if (parse_strtoul(buf, 2, &t))
6369 return -EINVAL;
6370
6371 switch (t) {
6372 case 0:
6373 level = TP_EC_FAN_FULLSPEED;
6374 break;
6375 case 1:
6376 level = TPACPI_FAN_LAST_LEVEL;
6377 break;
6378 case 2:
6379 level = TP_EC_FAN_AUTO;
6380 break;
6381 case 3:
6382 /* reserved for software-controlled auto mode */
6383 return -ENOSYS;
6384 default:
6385 return -EINVAL;
6386 }
6387
6388 res = fan_set_level_safe(level);
6389 if (res == -ENXIO)
6390 return -EINVAL;
6391 else if (res < 0)
6392 return res;
6393
6394 fan_watchdog_reset();
6395
6396 return count;
6397 }
6398
6399 static struct device_attribute dev_attr_fan_pwm1_enable =
6400 __ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
6401 fan_pwm1_enable_show, fan_pwm1_enable_store);
6402
6403 /* sysfs fan pwm1 ------------------------------------------------------ */
6404 static ssize_t fan_pwm1_show(struct device *dev,
6405 struct device_attribute *attr,
6406 char *buf)
6407 {
6408 int res;
6409 u8 status;
6410
6411 res = fan_get_status_safe(&status);
6412 if (res)
6413 return res;
6414
6415 if ((status &
6416 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0)
6417 status = fan_control_desired_level;
6418
6419 if (status > 7)
6420 status = 7;
6421
6422 return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7);
6423 }
6424
6425 static ssize_t fan_pwm1_store(struct device *dev,
6426 struct device_attribute *attr,
6427 const char *buf, size_t count)
6428 {
6429 unsigned long s;
6430 int rc;
6431 u8 status, newlevel;
6432
6433 if (parse_strtoul(buf, 255, &s))
6434 return -EINVAL;
6435
6436 /* scale down from 0-255 to 0-7 */
6437 newlevel = (s >> 5) & 0x07;
6438
6439 if (mutex_lock_killable(&fan_mutex))
6440 return -ERESTARTSYS;
6441
6442 rc = fan_get_status(&status);
6443 if (!rc && (status &
6444 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) {
6445 rc = fan_set_level(newlevel);
6446 if (rc == -ENXIO)
6447 rc = -EINVAL;
6448 else if (!rc) {
6449 fan_update_desired_level(newlevel);
6450 fan_watchdog_reset();
6451 }
6452 }
6453
6454 mutex_unlock(&fan_mutex);
6455 return (rc)? rc : count;
6456 }
6457
6458 static struct device_attribute dev_attr_fan_pwm1 =
6459 __ATTR(pwm1, S_IWUSR | S_IRUGO,
6460 fan_pwm1_show, fan_pwm1_store);
6461
6462 /* sysfs fan fan1_input ------------------------------------------------ */
6463 static ssize_t fan_fan1_input_show(struct device *dev,
6464 struct device_attribute *attr,
6465 char *buf)
6466 {
6467 int res;
6468 unsigned int speed;
6469
6470 res = fan_get_speed(&speed);
6471 if (res < 0)
6472 return res;
6473
6474 return snprintf(buf, PAGE_SIZE, "%u\n", speed);
6475 }
6476
6477 static struct device_attribute dev_attr_fan_fan1_input =
6478 __ATTR(fan1_input, S_IRUGO,
6479 fan_fan1_input_show, NULL);
6480
6481 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
6482 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
6483 char *buf)
6484 {
6485 return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval);
6486 }
6487
6488 static ssize_t fan_fan_watchdog_store(struct device_driver *drv,
6489 const char *buf, size_t count)
6490 {
6491 unsigned long t;
6492
6493 if (parse_strtoul(buf, 120, &t))
6494 return -EINVAL;
6495
6496 if (!fan_control_allowed)
6497 return -EPERM;
6498
6499 fan_watchdog_maxinterval = t;
6500 fan_watchdog_reset();
6501
6502 return count;
6503 }
6504
6505 static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
6506 fan_fan_watchdog_show, fan_fan_watchdog_store);
6507
6508 /* --------------------------------------------------------------------- */
6509 static struct attribute *fan_attributes[] = {
6510 &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
6511 &dev_attr_fan_fan1_input.attr,
6512 NULL
6513 };
6514
6515 static const struct attribute_group fan_attr_group = {
6516 .attrs = fan_attributes,
6517 };
6518
6519 static int __init fan_init(struct ibm_init_struct *iibm)
6520 {
6521 int rc;
6522
6523 vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n");
6524
6525 mutex_init(&fan_mutex);
6526 fan_status_access_mode = TPACPI_FAN_NONE;
6527 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6528 fan_control_commands = 0;
6529 fan_watchdog_maxinterval = 0;
6530 tp_features.fan_ctrl_status_undef = 0;
6531 fan_control_desired_level = 7;
6532
6533 TPACPI_ACPIHANDLE_INIT(fans);
6534 TPACPI_ACPIHANDLE_INIT(gfan);
6535 TPACPI_ACPIHANDLE_INIT(sfan);
6536
6537 if (gfan_handle) {
6538 /* 570, 600e/x, 770e, 770x */
6539 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
6540 } else {
6541 /* all other ThinkPads: note that even old-style
6542 * ThinkPad ECs supports the fan control register */
6543 if (likely(acpi_ec_read(fan_status_offset,
6544 &fan_control_initial_status))) {
6545 fan_status_access_mode = TPACPI_FAN_RD_TPEC;
6546 fan_quirk1_detect();
6547 } else {
6548 printk(TPACPI_ERR
6549 "ThinkPad ACPI EC access misbehaving, "
6550 "fan status and control unavailable\n");
6551 return 1;
6552 }
6553 }
6554
6555 if (sfan_handle) {
6556 /* 570, 770x-JL */
6557 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN;
6558 fan_control_commands |=
6559 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE;
6560 } else {
6561 if (!gfan_handle) {
6562 /* gfan without sfan means no fan control */
6563 /* all other models implement TP EC 0x2f control */
6564
6565 if (fans_handle) {
6566 /* X31, X40, X41 */
6567 fan_control_access_mode =
6568 TPACPI_FAN_WR_ACPI_FANS;
6569 fan_control_commands |=
6570 TPACPI_FAN_CMD_SPEED |
6571 TPACPI_FAN_CMD_LEVEL |
6572 TPACPI_FAN_CMD_ENABLE;
6573 } else {
6574 fan_control_access_mode = TPACPI_FAN_WR_TPEC;
6575 fan_control_commands |=
6576 TPACPI_FAN_CMD_LEVEL |
6577 TPACPI_FAN_CMD_ENABLE;
6578 }
6579 }
6580 }
6581
6582 vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n",
6583 str_supported(fan_status_access_mode != TPACPI_FAN_NONE ||
6584 fan_control_access_mode != TPACPI_FAN_WR_NONE),
6585 fan_status_access_mode, fan_control_access_mode);
6586
6587 /* fan control master switch */
6588 if (!fan_control_allowed) {
6589 fan_control_access_mode = TPACPI_FAN_WR_NONE;
6590 fan_control_commands = 0;
6591 dbg_printk(TPACPI_DBG_INIT,
6592 "fan control features disabled by parameter\n");
6593 }
6594
6595 /* update fan_control_desired_level */
6596 if (fan_status_access_mode != TPACPI_FAN_NONE)
6597 fan_get_status_safe(NULL);
6598
6599 if (fan_status_access_mode != TPACPI_FAN_NONE ||
6600 fan_control_access_mode != TPACPI_FAN_WR_NONE) {
6601 rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
6602 &fan_attr_group);
6603 if (rc < 0)
6604 return rc;
6605
6606 rc = driver_create_file(&tpacpi_hwmon_pdriver.driver,
6607 &driver_attr_fan_watchdog);
6608 if (rc < 0) {
6609 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj,
6610 &fan_attr_group);
6611 return rc;
6612 }
6613 return 0;
6614 } else
6615 return 1;
6616 }
6617
6618 static void fan_exit(void)
6619 {
6620 vdbg_printk(TPACPI_DBG_EXIT,
6621 "cancelling any pending fan watchdog tasks\n");
6622
6623 /* FIXME: can we really do this unconditionally? */
6624 sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group);
6625 driver_remove_file(&tpacpi_hwmon_pdriver.driver,
6626 &driver_attr_fan_watchdog);
6627
6628 cancel_delayed_work(&fan_watchdog_task);
6629 flush_workqueue(tpacpi_wq);
6630 }
6631
6632 static void fan_suspend(pm_message_t state)
6633 {
6634 int rc;
6635
6636 if (!fan_control_allowed)
6637 return;
6638
6639 /* Store fan status in cache */
6640 fan_control_resume_level = 0;
6641 rc = fan_get_status_safe(&fan_control_resume_level);
6642 if (rc < 0)
6643 printk(TPACPI_NOTICE
6644 "failed to read fan level for later "
6645 "restore during resume: %d\n", rc);
6646
6647 /* if it is undefined, don't attempt to restore it.
6648 * KEEP THIS LAST */
6649 if (tp_features.fan_ctrl_status_undef)
6650 fan_control_resume_level = 0;
6651 }
6652
6653 static void fan_resume(void)
6654 {
6655 u8 current_level = 7;
6656 bool do_set = false;
6657 int rc;
6658
6659 /* DSDT *always* updates status on resume */
6660 tp_features.fan_ctrl_status_undef = 0;
6661
6662 if (!fan_control_allowed ||
6663 !fan_control_resume_level ||
6664 (fan_get_status_safe(&current_level) < 0))
6665 return;
6666
6667 switch (fan_control_access_mode) {
6668 case TPACPI_FAN_WR_ACPI_SFAN:
6669 /* never decrease fan level */
6670 do_set = (fan_control_resume_level > current_level);
6671 break;
6672 case TPACPI_FAN_WR_ACPI_FANS:
6673 case TPACPI_FAN_WR_TPEC:
6674 /* never decrease fan level, scale is:
6675 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO
6676 *
6677 * We expect the firmware to set either 7 or AUTO, but we
6678 * handle FULLSPEED out of paranoia.
6679 *
6680 * So, we can safely only restore FULLSPEED or 7, anything
6681 * else could slow the fan. Restoring AUTO is useless, at
6682 * best that's exactly what the DSDT already set (it is the
6683 * slower it uses).
6684 *
6685 * Always keep in mind that the DSDT *will* have set the
6686 * fans to what the vendor supposes is the best level. We
6687 * muck with it only to speed the fan up.
6688 */
6689 if (fan_control_resume_level != 7 &&
6690 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED))
6691 return;
6692 else
6693 do_set = !(current_level & TP_EC_FAN_FULLSPEED) &&
6694 (current_level != fan_control_resume_level);
6695 break;
6696 default:
6697 return;
6698 }
6699 if (do_set) {
6700 printk(TPACPI_NOTICE
6701 "restoring fan level to 0x%02x\n",
6702 fan_control_resume_level);
6703 rc = fan_set_level_safe(fan_control_resume_level);
6704 if (rc < 0)
6705 printk(TPACPI_NOTICE
6706 "failed to restore fan level: %d\n", rc);
6707 }
6708 }
6709
6710 static int fan_read(char *p)
6711 {
6712 int len = 0;
6713 int rc;
6714 u8 status;
6715 unsigned int speed = 0;
6716
6717 switch (fan_status_access_mode) {
6718 case TPACPI_FAN_RD_ACPI_GFAN:
6719 /* 570, 600e/x, 770e, 770x */
6720 rc = fan_get_status_safe(&status);
6721 if (rc < 0)
6722 return rc;
6723
6724 len += sprintf(p + len, "status:\t\t%s\n"
6725 "level:\t\t%d\n",
6726 (status != 0) ? "enabled" : "disabled", status);
6727 break;
6728
6729 case TPACPI_FAN_RD_TPEC:
6730 /* all except 570, 600e/x, 770e, 770x */
6731 rc = fan_get_status_safe(&status);
6732 if (rc < 0)
6733 return rc;
6734
6735 len += sprintf(p + len, "status:\t\t%s\n",
6736 (status != 0) ? "enabled" : "disabled");
6737
6738 rc = fan_get_speed(&speed);
6739 if (rc < 0)
6740 return rc;
6741
6742 len += sprintf(p + len, "speed:\t\t%d\n", speed);
6743
6744 if (status & TP_EC_FAN_FULLSPEED)
6745 /* Disengaged mode takes precedence */
6746 len += sprintf(p + len, "level:\t\tdisengaged\n");
6747 else if (status & TP_EC_FAN_AUTO)
6748 len += sprintf(p + len, "level:\t\tauto\n");
6749 else
6750 len += sprintf(p + len, "level:\t\t%d\n", status);
6751 break;
6752
6753 case TPACPI_FAN_NONE:
6754 default:
6755 len += sprintf(p + len, "status:\t\tnot supported\n");
6756 }
6757
6758 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) {
6759 len += sprintf(p + len, "commands:\tlevel <level>");
6760
6761 switch (fan_control_access_mode) {
6762 case TPACPI_FAN_WR_ACPI_SFAN:
6763 len += sprintf(p + len, " (<level> is 0-7)\n");
6764 break;
6765
6766 default:
6767 len += sprintf(p + len, " (<level> is 0-7, "
6768 "auto, disengaged, full-speed)\n");
6769 break;
6770 }
6771 }
6772
6773 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE)
6774 len += sprintf(p + len, "commands:\tenable, disable\n"
6775 "commands:\twatchdog <timeout> (<timeout> "
6776 "is 0 (off), 1-120 (seconds))\n");
6777
6778 if (fan_control_commands & TPACPI_FAN_CMD_SPEED)
6779 len += sprintf(p + len, "commands:\tspeed <speed>"
6780 " (<speed> is 0-65535)\n");
6781
6782 return len;
6783 }
6784
6785 static int fan_write_cmd_level(const char *cmd, int *rc)
6786 {
6787 int level;
6788
6789 if (strlencmp(cmd, "level auto") == 0)
6790 level = TP_EC_FAN_AUTO;
6791 else if ((strlencmp(cmd, "level disengaged") == 0) |
6792 (strlencmp(cmd, "level full-speed") == 0))
6793 level = TP_EC_FAN_FULLSPEED;
6794 else if (sscanf(cmd, "level %d", &level) != 1)
6795 return 0;
6796
6797 *rc = fan_set_level_safe(level);
6798 if (*rc == -ENXIO)
6799 printk(TPACPI_ERR "level command accepted for unsupported "
6800 "access mode %d", fan_control_access_mode);
6801
6802 return 1;
6803 }
6804
6805 static int fan_write_cmd_enable(const char *cmd, int *rc)
6806 {
6807 if (strlencmp(cmd, "enable") != 0)
6808 return 0;
6809
6810 *rc = fan_set_enable();
6811 if (*rc == -ENXIO)
6812 printk(TPACPI_ERR "enable command accepted for unsupported "
6813 "access mode %d", fan_control_access_mode);
6814
6815 return 1;
6816 }
6817
6818 static int fan_write_cmd_disable(const char *cmd, int *rc)
6819 {
6820 if (strlencmp(cmd, "disable") != 0)
6821 return 0;
6822
6823 *rc = fan_set_disable();
6824 if (*rc == -ENXIO)
6825 printk(TPACPI_ERR "disable command accepted for unsupported "
6826 "access mode %d", fan_control_access_mode);
6827
6828 return 1;
6829 }
6830
6831 static int fan_write_cmd_speed(const char *cmd, int *rc)
6832 {
6833 int speed;
6834
6835 /* TODO:
6836 * Support speed <low> <medium> <high> ? */
6837
6838 if (sscanf(cmd, "speed %d", &speed) != 1)
6839 return 0;
6840
6841 *rc = fan_set_speed(speed);
6842 if (*rc == -ENXIO)
6843 printk(TPACPI_ERR "speed command accepted for unsupported "
6844 "access mode %d", fan_control_access_mode);
6845
6846 return 1;
6847 }
6848
6849 static int fan_write_cmd_watchdog(const char *cmd, int *rc)
6850 {
6851 int interval;
6852
6853 if (sscanf(cmd, "watchdog %d", &interval) != 1)
6854 return 0;
6855
6856 if (interval < 0 || interval > 120)
6857 *rc = -EINVAL;
6858 else
6859 fan_watchdog_maxinterval = interval;
6860
6861 return 1;
6862 }
6863
6864 static int fan_write(char *buf)
6865 {
6866 char *cmd;
6867 int rc = 0;
6868
6869 while (!rc && (cmd = next_cmd(&buf))) {
6870 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) &&
6871 fan_write_cmd_level(cmd, &rc)) &&
6872 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) &&
6873 (fan_write_cmd_enable(cmd, &rc) ||
6874 fan_write_cmd_disable(cmd, &rc) ||
6875 fan_write_cmd_watchdog(cmd, &rc))) &&
6876 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) &&
6877 fan_write_cmd_speed(cmd, &rc))
6878 )
6879 rc = -EINVAL;
6880 else if (!rc)
6881 fan_watchdog_reset();
6882 }
6883
6884 return rc;
6885 }
6886
6887 static struct ibm_struct fan_driver_data = {
6888 .name = "fan",
6889 .read = fan_read,
6890 .write = fan_write,
6891 .exit = fan_exit,
6892 .suspend = fan_suspend,
6893 .resume = fan_resume,
6894 };
6895
6896 /****************************************************************************
6897 ****************************************************************************
6898 *
6899 * Infrastructure
6900 *
6901 ****************************************************************************
6902 ****************************************************************************/
6903
6904 /* sysfs name ---------------------------------------------------------- */
6905 static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev,
6906 struct device_attribute *attr,
6907 char *buf)
6908 {
6909 return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME);
6910 }
6911
6912 static struct device_attribute dev_attr_thinkpad_acpi_pdev_name =
6913 __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL);
6914
6915 /* --------------------------------------------------------------------- */
6916
6917 /* /proc support */
6918 static struct proc_dir_entry *proc_dir;
6919
6920 /*
6921 * Module and infrastructure proble, init and exit handling
6922 */
6923
6924 static int force_load;
6925
6926 #ifdef CONFIG_THINKPAD_ACPI_DEBUG
6927 static const char * __init str_supported(int is_supported)
6928 {
6929 static char text_unsupported[] __initdata = "not supported";
6930
6931 return (is_supported)? &text_unsupported[4] : &text_unsupported[0];
6932 }
6933 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */
6934
6935 static void ibm_exit(struct ibm_struct *ibm)
6936 {
6937 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name);
6938
6939 list_del_init(&ibm->all_drivers);
6940
6941 if (ibm->flags.acpi_notify_installed) {
6942 dbg_printk(TPACPI_DBG_EXIT,
6943 "%s: acpi_remove_notify_handler\n", ibm->name);
6944 BUG_ON(!ibm->acpi);
6945 acpi_remove_notify_handler(*ibm->acpi->handle,
6946 ibm->acpi->type,
6947 dispatch_acpi_notify);
6948 ibm->flags.acpi_notify_installed = 0;
6949 ibm->flags.acpi_notify_installed = 0;
6950 }
6951
6952 if (ibm->flags.proc_created) {
6953 dbg_printk(TPACPI_DBG_EXIT,
6954 "%s: remove_proc_entry\n", ibm->name);
6955 remove_proc_entry(ibm->name, proc_dir);
6956 ibm->flags.proc_created = 0;
6957 }
6958
6959 if (ibm->flags.acpi_driver_registered) {
6960 dbg_printk(TPACPI_DBG_EXIT,
6961 "%s: acpi_bus_unregister_driver\n", ibm->name);
6962 BUG_ON(!ibm->acpi);
6963 acpi_bus_unregister_driver(ibm->acpi->driver);
6964 kfree(ibm->acpi->driver);
6965 ibm->acpi->driver = NULL;
6966 ibm->flags.acpi_driver_registered = 0;
6967 }
6968
6969 if (ibm->flags.init_called && ibm->exit) {
6970 ibm->exit();
6971 ibm->flags.init_called = 0;
6972 }
6973
6974 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name);
6975 }
6976
6977 static int __init ibm_init(struct ibm_init_struct *iibm)
6978 {
6979 int ret;
6980 struct ibm_struct *ibm = iibm->data;
6981 struct proc_dir_entry *entry;
6982
6983 BUG_ON(ibm == NULL);
6984
6985 INIT_LIST_HEAD(&ibm->all_drivers);
6986
6987 if (ibm->flags.experimental && !experimental)
6988 return 0;
6989
6990 dbg_printk(TPACPI_DBG_INIT,
6991 "probing for %s\n", ibm->name);
6992
6993 if (iibm->init) {
6994 ret = iibm->init(iibm);
6995 if (ret > 0)
6996 return 0; /* probe failed */
6997 if (ret)
6998 return ret;
6999
7000 ibm->flags.init_called = 1;
7001 }
7002
7003 if (ibm->acpi) {
7004 if (ibm->acpi->hid) {
7005 ret = register_tpacpi_subdriver(ibm);
7006 if (ret)
7007 goto err_out;
7008 }
7009
7010 if (ibm->acpi->notify) {
7011 ret = setup_acpi_notify(ibm);
7012 if (ret == -ENODEV) {
7013 printk(TPACPI_NOTICE "disabling subdriver %s\n",
7014 ibm->name);
7015 ret = 0;
7016 goto err_out;
7017 }
7018 if (ret < 0)
7019 goto err_out;
7020 }
7021 }
7022
7023 dbg_printk(TPACPI_DBG_INIT,
7024 "%s installed\n", ibm->name);
7025
7026 if (ibm->read) {
7027 entry = create_proc_entry(ibm->name,
7028 S_IFREG | S_IRUGO | S_IWUSR,
7029 proc_dir);
7030 if (!entry) {
7031 printk(TPACPI_ERR "unable to create proc entry %s\n",
7032 ibm->name);
7033 ret = -ENODEV;
7034 goto err_out;
7035 }
7036 entry->owner = THIS_MODULE;
7037 entry->data = ibm;
7038 entry->read_proc = &dispatch_procfs_read;
7039 if (ibm->write)
7040 entry->write_proc = &dispatch_procfs_write;
7041 ibm->flags.proc_created = 1;
7042 }
7043
7044 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers);
7045
7046 return 0;
7047
7048 err_out:
7049 dbg_printk(TPACPI_DBG_INIT,
7050 "%s: at error exit path with result %d\n",
7051 ibm->name, ret);
7052
7053 ibm_exit(ibm);
7054 return (ret < 0)? ret : 0;
7055 }
7056
7057 /* Probing */
7058
7059 /* returns 0 - probe ok, or < 0 - probe error.
7060 * Probe ok doesn't mean thinkpad found.
7061 * On error, kfree() cleanup on tp->* is not performed, caller must do it */
7062 static int __must_check __init get_thinkpad_model_data(
7063 struct thinkpad_id_data *tp)
7064 {
7065 const struct dmi_device *dev = NULL;
7066 char ec_fw_string[18];
7067 char const *s;
7068
7069 if (!tp)
7070 return -EINVAL;
7071
7072 memset(tp, 0, sizeof(*tp));
7073
7074 if (dmi_name_in_vendors("IBM"))
7075 tp->vendor = PCI_VENDOR_ID_IBM;
7076 else if (dmi_name_in_vendors("LENOVO"))
7077 tp->vendor = PCI_VENDOR_ID_LENOVO;
7078 else
7079 return 0;
7080
7081 s = dmi_get_system_info(DMI_BIOS_VERSION);
7082 tp->bios_version_str = kstrdup(s, GFP_KERNEL);
7083 if (s && !tp->bios_version_str)
7084 return -ENOMEM;
7085 if (!tp->bios_version_str)
7086 return 0;
7087 tp->bios_model = tp->bios_version_str[0]
7088 | (tp->bios_version_str[1] << 8);
7089
7090 /*
7091 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
7092 * X32 or newer, all Z series; Some models must have an
7093 * up-to-date BIOS or they will not be detected.
7094 *
7095 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7096 */
7097 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
7098 if (sscanf(dev->name,
7099 "IBM ThinkPad Embedded Controller -[%17c",
7100 ec_fw_string) == 1) {
7101 ec_fw_string[sizeof(ec_fw_string) - 1] = 0;
7102 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0;
7103
7104 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
7105 if (!tp->ec_version_str)
7106 return -ENOMEM;
7107 tp->ec_model = ec_fw_string[0]
7108 | (ec_fw_string[1] << 8);
7109 break;
7110 }
7111 }
7112
7113 s = dmi_get_system_info(DMI_PRODUCT_VERSION);
7114 if (s && !strnicmp(s, "ThinkPad", 8)) {
7115 tp->model_str = kstrdup(s, GFP_KERNEL);
7116 if (!tp->model_str)
7117 return -ENOMEM;
7118 }
7119
7120 s = dmi_get_system_info(DMI_PRODUCT_NAME);
7121 tp->nummodel_str = kstrdup(s, GFP_KERNEL);
7122 if (s && !tp->nummodel_str)
7123 return -ENOMEM;
7124
7125 return 0;
7126 }
7127
7128 static int __init probe_for_thinkpad(void)
7129 {
7130 int is_thinkpad;
7131
7132 if (acpi_disabled)
7133 return -ENODEV;
7134
7135 /*
7136 * Non-ancient models have better DMI tagging, but very old models
7137 * don't.
7138 */
7139 is_thinkpad = (thinkpad_id.model_str != NULL);
7140
7141 /* ec is required because many other handles are relative to it */
7142 TPACPI_ACPIHANDLE_INIT(ec);
7143 if (!ec_handle) {
7144 if (is_thinkpad)
7145 printk(TPACPI_ERR
7146 "Not yet supported ThinkPad detected!\n");
7147 return -ENODEV;
7148 }
7149
7150 /*
7151 * Risks a regression on very old machines, but reduces potential
7152 * false positives a damn great deal
7153 */
7154 if (!is_thinkpad)
7155 is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM);
7156
7157 if (!is_thinkpad && !force_load)
7158 return -ENODEV;
7159
7160 return 0;
7161 }
7162
7163
7164 /* Module init, exit, parameters */
7165
7166 static struct ibm_init_struct ibms_init[] __initdata = {
7167 {
7168 .init = thinkpad_acpi_driver_init,
7169 .data = &thinkpad_acpi_driver_data,
7170 },
7171 {
7172 .init = hotkey_init,
7173 .data = &hotkey_driver_data,
7174 },
7175 {
7176 .init = bluetooth_init,
7177 .data = &bluetooth_driver_data,
7178 },
7179 {
7180 .init = wan_init,
7181 .data = &wan_driver_data,
7182 },
7183 {
7184 .init = uwb_init,
7185 .data = &uwb_driver_data,
7186 },
7187 #ifdef CONFIG_THINKPAD_ACPI_VIDEO
7188 {
7189 .init = video_init,
7190 .data = &video_driver_data,
7191 },
7192 #endif
7193 {
7194 .init = light_init,
7195 .data = &light_driver_data,
7196 },
7197 #ifdef CONFIG_THINKPAD_ACPI_DOCK
7198 {
7199 .init = dock_init,
7200 .data = &dock_driver_data[0],
7201 },
7202 {
7203 .init = dock_init2,
7204 .data = &dock_driver_data[1],
7205 },
7206 #endif
7207 #ifdef CONFIG_THINKPAD_ACPI_BAY
7208 {
7209 .init = bay_init,
7210 .data = &bay_driver_data,
7211 },
7212 #endif
7213 {
7214 .init = cmos_init,
7215 .data = &cmos_driver_data,
7216 },
7217 {
7218 .init = led_init,
7219 .data = &led_driver_data,
7220 },
7221 {
7222 .init = beep_init,
7223 .data = &beep_driver_data,
7224 },
7225 {
7226 .init = thermal_init,
7227 .data = &thermal_driver_data,
7228 },
7229 {
7230 .data = &ecdump_driver_data,
7231 },
7232 {
7233 .init = brightness_init,
7234 .data = &brightness_driver_data,
7235 },
7236 {
7237 .data = &volume_driver_data,
7238 },
7239 {
7240 .init = fan_init,
7241 .data = &fan_driver_data,
7242 },
7243 };
7244
7245 static int __init set_ibm_param(const char *val, struct kernel_param *kp)
7246 {
7247 unsigned int i;
7248 struct ibm_struct *ibm;
7249
7250 if (!kp || !kp->name || !val)
7251 return -EINVAL;
7252
7253 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7254 ibm = ibms_init[i].data;
7255 WARN_ON(ibm == NULL);
7256
7257 if (!ibm || !ibm->name)
7258 continue;
7259
7260 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) {
7261 if (strlen(val) > sizeof(ibms_init[i].param) - 2)
7262 return -ENOSPC;
7263 strcpy(ibms_init[i].param, val);
7264 strcat(ibms_init[i].param, ",");
7265 return 0;
7266 }
7267 }
7268
7269 return -EINVAL;
7270 }
7271
7272 module_param(experimental, int, 0);
7273 MODULE_PARM_DESC(experimental,
7274 "Enables experimental features when non-zero");
7275
7276 module_param_named(debug, dbg_level, uint, 0);
7277 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
7278
7279 module_param(force_load, bool, 0);
7280 MODULE_PARM_DESC(force_load,
7281 "Attempts to load the driver even on a "
7282 "mis-identified ThinkPad when true");
7283
7284 module_param_named(fan_control, fan_control_allowed, bool, 0);
7285 MODULE_PARM_DESC(fan_control,
7286 "Enables setting fan parameters features when true");
7287
7288 module_param_named(brightness_mode, brightness_mode, int, 0);
7289 MODULE_PARM_DESC(brightness_mode,
7290 "Selects brightness control strategy: "
7291 "0=auto, 1=EC, 2=CMOS, 3=both");
7292
7293 module_param(brightness_enable, uint, 0);
7294 MODULE_PARM_DESC(brightness_enable,
7295 "Enables backlight control when 1, disables when 0");
7296
7297 module_param(hotkey_report_mode, uint, 0);
7298 MODULE_PARM_DESC(hotkey_report_mode,
7299 "used for backwards compatibility with userspace, "
7300 "see documentation");
7301
7302 #define TPACPI_PARAM(feature) \
7303 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \
7304 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \
7305 "at module load, see documentation")
7306
7307 TPACPI_PARAM(hotkey);
7308 TPACPI_PARAM(bluetooth);
7309 TPACPI_PARAM(video);
7310 TPACPI_PARAM(light);
7311 #ifdef CONFIG_THINKPAD_ACPI_DOCK
7312 TPACPI_PARAM(dock);
7313 #endif
7314 #ifdef CONFIG_THINKPAD_ACPI_BAY
7315 TPACPI_PARAM(bay);
7316 #endif /* CONFIG_THINKPAD_ACPI_BAY */
7317 TPACPI_PARAM(cmos);
7318 TPACPI_PARAM(led);
7319 TPACPI_PARAM(beep);
7320 TPACPI_PARAM(ecdump);
7321 TPACPI_PARAM(brightness);
7322 TPACPI_PARAM(volume);
7323 TPACPI_PARAM(fan);
7324
7325 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
7326 module_param(dbg_wlswemul, uint, 0);
7327 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation");
7328 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0);
7329 MODULE_PARM_DESC(wlsw_state,
7330 "Initial state of the emulated WLSW switch");
7331
7332 module_param(dbg_bluetoothemul, uint, 0);
7333 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation");
7334 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0);
7335 MODULE_PARM_DESC(bluetooth_state,
7336 "Initial state of the emulated bluetooth switch");
7337
7338 module_param(dbg_wwanemul, uint, 0);
7339 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation");
7340 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0);
7341 MODULE_PARM_DESC(wwan_state,
7342 "Initial state of the emulated WWAN switch");
7343
7344 module_param(dbg_uwbemul, uint, 0);
7345 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation");
7346 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0);
7347 MODULE_PARM_DESC(uwb_state,
7348 "Initial state of the emulated UWB switch");
7349 #endif
7350
7351 static void thinkpad_acpi_module_exit(void)
7352 {
7353 struct ibm_struct *ibm, *itmp;
7354
7355 tpacpi_lifecycle = TPACPI_LIFE_EXITING;
7356
7357 list_for_each_entry_safe_reverse(ibm, itmp,
7358 &tpacpi_all_drivers,
7359 all_drivers) {
7360 ibm_exit(ibm);
7361 }
7362
7363 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n");
7364
7365 if (tpacpi_inputdev) {
7366 if (tp_features.input_device_registered)
7367 input_unregister_device(tpacpi_inputdev);
7368 else
7369 input_free_device(tpacpi_inputdev);
7370 }
7371
7372 if (tpacpi_hwmon)
7373 hwmon_device_unregister(tpacpi_hwmon);
7374
7375 if (tp_features.sensors_pdev_attrs_registered)
7376 device_remove_file(&tpacpi_sensors_pdev->dev,
7377 &dev_attr_thinkpad_acpi_pdev_name);
7378 if (tpacpi_sensors_pdev)
7379 platform_device_unregister(tpacpi_sensors_pdev);
7380 if (tpacpi_pdev)
7381 platform_device_unregister(tpacpi_pdev);
7382
7383 if (tp_features.sensors_pdrv_attrs_registered)
7384 tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver);
7385 if (tp_features.platform_drv_attrs_registered)
7386 tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver);
7387
7388 if (tp_features.sensors_pdrv_registered)
7389 platform_driver_unregister(&tpacpi_hwmon_pdriver);
7390
7391 if (tp_features.platform_drv_registered)
7392 platform_driver_unregister(&tpacpi_pdriver);
7393
7394 if (proc_dir)
7395 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir);
7396
7397 if (tpacpi_wq)
7398 destroy_workqueue(tpacpi_wq);
7399
7400 kfree(thinkpad_id.bios_version_str);
7401 kfree(thinkpad_id.ec_version_str);
7402 kfree(thinkpad_id.model_str);
7403 }
7404
7405
7406 static int __init thinkpad_acpi_module_init(void)
7407 {
7408 int ret, i;
7409
7410 tpacpi_lifecycle = TPACPI_LIFE_INIT;
7411
7412 /* Parameter checking */
7413 if (hotkey_report_mode > 2)
7414 return -EINVAL;
7415
7416 /* Driver-level probe */
7417
7418 ret = get_thinkpad_model_data(&thinkpad_id);
7419 if (ret) {
7420 printk(TPACPI_ERR
7421 "unable to get DMI data: %d\n", ret);
7422 thinkpad_acpi_module_exit();
7423 return ret;
7424 }
7425 ret = probe_for_thinkpad();
7426 if (ret) {
7427 thinkpad_acpi_module_exit();
7428 return ret;
7429 }
7430
7431 /* Driver initialization */
7432
7433 TPACPI_ACPIHANDLE_INIT(ecrd);
7434 TPACPI_ACPIHANDLE_INIT(ecwr);
7435
7436 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME);
7437 if (!tpacpi_wq) {
7438 thinkpad_acpi_module_exit();
7439 return -ENOMEM;
7440 }
7441
7442 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir);
7443 if (!proc_dir) {
7444 printk(TPACPI_ERR
7445 "unable to create proc dir " TPACPI_PROC_DIR);
7446 thinkpad_acpi_module_exit();
7447 return -ENODEV;
7448 }
7449 proc_dir->owner = THIS_MODULE;
7450
7451 ret = platform_driver_register(&tpacpi_pdriver);
7452 if (ret) {
7453 printk(TPACPI_ERR
7454 "unable to register main platform driver\n");
7455 thinkpad_acpi_module_exit();
7456 return ret;
7457 }
7458 tp_features.platform_drv_registered = 1;
7459
7460 ret = platform_driver_register(&tpacpi_hwmon_pdriver);
7461 if (ret) {
7462 printk(TPACPI_ERR
7463 "unable to register hwmon platform driver\n");
7464 thinkpad_acpi_module_exit();
7465 return ret;
7466 }
7467 tp_features.sensors_pdrv_registered = 1;
7468
7469 ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver);
7470 if (!ret) {
7471 tp_features.platform_drv_attrs_registered = 1;
7472 ret = tpacpi_create_driver_attributes(
7473 &tpacpi_hwmon_pdriver.driver);
7474 }
7475 if (ret) {
7476 printk(TPACPI_ERR
7477 "unable to create sysfs driver attributes\n");
7478 thinkpad_acpi_module_exit();
7479 return ret;
7480 }
7481 tp_features.sensors_pdrv_attrs_registered = 1;
7482
7483
7484 /* Device initialization */
7485 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1,
7486 NULL, 0);
7487 if (IS_ERR(tpacpi_pdev)) {
7488 ret = PTR_ERR(tpacpi_pdev);
7489 tpacpi_pdev = NULL;
7490 printk(TPACPI_ERR "unable to register platform device\n");
7491 thinkpad_acpi_module_exit();
7492 return ret;
7493 }
7494 tpacpi_sensors_pdev = platform_device_register_simple(
7495 TPACPI_HWMON_DRVR_NAME,
7496 -1, NULL, 0);
7497 if (IS_ERR(tpacpi_sensors_pdev)) {
7498 ret = PTR_ERR(tpacpi_sensors_pdev);
7499 tpacpi_sensors_pdev = NULL;
7500 printk(TPACPI_ERR
7501 "unable to register hwmon platform device\n");
7502 thinkpad_acpi_module_exit();
7503 return ret;
7504 }
7505 ret = device_create_file(&tpacpi_sensors_pdev->dev,
7506 &dev_attr_thinkpad_acpi_pdev_name);
7507 if (ret) {
7508 printk(TPACPI_ERR
7509 "unable to create sysfs hwmon device attributes\n");
7510 thinkpad_acpi_module_exit();
7511 return ret;
7512 }
7513 tp_features.sensors_pdev_attrs_registered = 1;
7514 tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev);
7515 if (IS_ERR(tpacpi_hwmon)) {
7516 ret = PTR_ERR(tpacpi_hwmon);
7517 tpacpi_hwmon = NULL;
7518 printk(TPACPI_ERR "unable to register hwmon device\n");
7519 thinkpad_acpi_module_exit();
7520 return ret;
7521 }
7522 mutex_init(&tpacpi_inputdev_send_mutex);
7523 tpacpi_inputdev = input_allocate_device();
7524 if (!tpacpi_inputdev) {
7525 printk(TPACPI_ERR "unable to allocate input device\n");
7526 thinkpad_acpi_module_exit();
7527 return -ENOMEM;
7528 } else {
7529 /* Prepare input device, but don't register */
7530 tpacpi_inputdev->name = "ThinkPad Extra Buttons";
7531 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0";
7532 tpacpi_inputdev->id.bustype = BUS_HOST;
7533 tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ?
7534 thinkpad_id.vendor :
7535 PCI_VENDOR_ID_IBM;
7536 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT;
7537 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION;
7538 }
7539 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) {
7540 ret = ibm_init(&ibms_init[i]);
7541 if (ret >= 0 && *ibms_init[i].param)
7542 ret = ibms_init[i].data->write(ibms_init[i].param);
7543 if (ret < 0) {
7544 thinkpad_acpi_module_exit();
7545 return ret;
7546 }
7547 }
7548 ret = input_register_device(tpacpi_inputdev);
7549 if (ret < 0) {
7550 printk(TPACPI_ERR "unable to register input device\n");
7551 thinkpad_acpi_module_exit();
7552 return ret;
7553 } else {
7554 tp_features.input_device_registered = 1;
7555 }
7556
7557 tpacpi_lifecycle = TPACPI_LIFE_RUNNING;
7558 return 0;
7559 }
7560
7561 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
7562
7563 /*
7564 * DMI matching for module autoloading
7565 *
7566 * See http://thinkwiki.org/wiki/List_of_DMI_IDs
7567 * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
7568 *
7569 * Only models listed in thinkwiki will be supported, so add yours
7570 * if it is not there yet.
7571 */
7572 #define IBM_BIOS_MODULE_ALIAS(__type) \
7573 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
7574
7575 /* Non-ancient thinkpads */
7576 MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
7577 MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
7578
7579 /* Ancient thinkpad BIOSes have to be identified by
7580 * BIOS type or model number, and there are far less
7581 * BIOS types than model numbers... */
7582 IBM_BIOS_MODULE_ALIAS("I[BDHIMNOTWVYZ]");
7583 IBM_BIOS_MODULE_ALIAS("1[0368A-GIKM-PST]");
7584 IBM_BIOS_MODULE_ALIAS("K[UX-Z]");
7585
7586 MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
7587 MODULE_DESCRIPTION(TPACPI_DESC);
7588 MODULE_VERSION(TPACPI_VERSION);
7589 MODULE_LICENSE("GPL");
7590
7591 module_init(thinkpad_acpi_module_init);
7592 module_exit(thinkpad_acpi_module_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree