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Commit | Line | Data |
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1da177e4 | 1 | /* |
643f12db | 2 | * thinkpad_acpi.c - ThinkPad ACPI Extras |
1da177e4 LT |
3 | * |
4 | * | |
78f81cc4 | 5 | * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> |
a62bc916 | 6 | * Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br> |
1da177e4 LT |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
a62bc916 HMH |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
21 | * 02110-1301, USA. | |
78f81cc4 BD |
22 | */ |
23 | ||
643f12db | 24 | #define IBM_VERSION "0.14" |
78f81cc4 BD |
25 | |
26 | /* | |
1da177e4 | 27 | * Changelog: |
643f12db HMH |
28 | * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to |
29 | * drivers/misc. | |
f9ff43a6 HMH |
30 | * |
31 | * 2006-11-22 0.13 new maintainer | |
32 | * changelog now lives in git commit history, and will | |
33 | * not be updated further in-file. | |
837ca6dd | 34 | * |
78f81cc4 BD |
35 | * 2005-08-17 0.12 fix compilation on 2.6.13-rc kernels |
36 | * 2005-03-17 0.11 support for 600e, 770x | |
37 | * thanks to Jamie Lentin <lentinj@dial.pipex.com> | |
38 | * support for 770e, G41 | |
39 | * G40 and G41 don't have a thinklight | |
40 | * temperatures no longer experimental | |
41 | * experimental brightness control | |
42 | * experimental volume control | |
43 | * experimental fan enable/disable | |
837ca6dd | 44 | * 2005-01-16 0.10 fix module loading on R30, R31 |
78f81cc4 BD |
45 | * 2005-01-16 0.9 support for 570, R30, R31 |
46 | * ultrabay support on A22p, A3x | |
47 | * limit arg for cmos, led, beep, drop experimental status | |
48 | * more capable led control on A21e, A22p, T20-22, X20 | |
49 | * experimental temperatures and fan speed | |
50 | * experimental embedded controller register dump | |
51 | * mark more functions as __init, drop incorrect __exit | |
52 | * use MODULE_VERSION | |
53 | * thanks to Henrik Brix Andersen <brix@gentoo.org> | |
54 | * fix parameter passing on module loading | |
55 | * thanks to Rusty Russell <rusty@rustcorp.com.au> | |
56 | * thanks to Jim Radford <radford@blackbean.org> | |
57 | * 2004-11-08 0.8 fix init error case, don't return from a macro | |
58 | * thanks to Chris Wright <chrisw@osdl.org> | |
59 | * 2004-10-23 0.7 fix module loading on A21e, A22p, T20, T21, X20 | |
60 | * fix led control on A21e | |
61 | * 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device | |
1da177e4 LT |
62 | * 2004-10-18 0.5 thinklight support on A21e, G40, R32, T20, T21, X20 |
63 | * proc file format changed | |
64 | * video_switch command | |
65 | * experimental cmos control | |
66 | * experimental led control | |
67 | * experimental acpi sounds | |
78f81cc4 BD |
68 | * 2004-09-16 0.4 support for module parameters |
69 | * hotkey mask can be prefixed by 0x | |
70 | * video output switching | |
71 | * video expansion control | |
72 | * ultrabay eject support | |
73 | * removed lcd brightness/on/off control, didn't work | |
74 | * 2004-08-17 0.3 support for R40 | |
75 | * lcd off, brightness control | |
76 | * thinklight on/off | |
77 | * 2004-08-14 0.2 support for T series, X20 | |
78 | * bluetooth enable/disable | |
79 | * hotkey events disabled by default | |
80 | * removed fan control, currently useless | |
81 | * 2004-08-09 0.1 initial release, support for X series | |
1da177e4 LT |
82 | */ |
83 | ||
f21f85de | 84 | #include "thinkpad_acpi.h" |
1da177e4 | 85 | |
f9ff43a6 | 86 | MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh"); |
78f81cc4 BD |
87 | MODULE_DESCRIPTION(IBM_DESC); |
88 | MODULE_VERSION(IBM_VERSION); | |
89 | MODULE_LICENSE("GPL"); | |
90 | ||
d903ac54 HMH |
91 | /* Please remove this in year 2009 */ |
92 | MODULE_ALIAS("ibm_acpi"); | |
93 | ||
1da177e4 LT |
94 | #define __unused __attribute__ ((unused)) |
95 | ||
56b6aeb0 HMH |
96 | /**************************************************************************** |
97 | **************************************************************************** | |
98 | * | |
99 | * ACPI Helpers and device model | |
100 | * | |
101 | **************************************************************************** | |
102 | ****************************************************************************/ | |
103 | ||
104 | /************************************************************************* | |
105 | * ACPI basic handles | |
106 | */ | |
1da177e4 LT |
107 | |
108 | static acpi_handle root_handle = NULL; | |
109 | ||
110 | #define IBM_HANDLE(object, parent, paths...) \ | |
111 | static acpi_handle object##_handle; \ | |
112 | static acpi_handle *object##_parent = &parent##_handle; \ | |
78f81cc4 | 113 | static char *object##_path; \ |
1da177e4 LT |
114 | static char *object##_paths[] = { paths } |
115 | ||
78f81cc4 BD |
116 | IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */ |
117 | "\\_SB.PCI.ISA.EC", /* 570 */ | |
118 | "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */ | |
119 | "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */ | |
120 | "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */ | |
121 | "\\_SB.PCI0.ICH3.EC0", /* R31 */ | |
122 | "\\_SB.PCI0.LPC.EC", /* all others */ | |
56b6aeb0 | 123 | ); |
78f81cc4 | 124 | |
56b6aeb0 HMH |
125 | IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */ |
126 | IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */ | |
78f81cc4 | 127 | |
56b6aeb0 HMH |
128 | |
129 | /************************************************************************* | |
130 | * Misc ACPI handles | |
131 | */ | |
78f81cc4 BD |
132 | |
133 | IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */ | |
134 | "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ | |
135 | "\\CMS", /* R40, R40e */ | |
56b6aeb0 | 136 | ); /* all others */ |
78f81cc4 BD |
137 | |
138 | IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ | |
139 | "^HKEY", /* R30, R31 */ | |
140 | "HKEY", /* all others */ | |
56b6aeb0 | 141 | ); /* 570 */ |
78f81cc4 | 142 | |
78f81cc4 | 143 | |
56b6aeb0 HMH |
144 | /************************************************************************* |
145 | * ACPI helpers | |
a8b7a662 HMH |
146 | */ |
147 | ||
1da177e4 LT |
148 | static int acpi_evalf(acpi_handle handle, |
149 | void *res, char *method, char *fmt, ...) | |
150 | { | |
151 | char *fmt0 = fmt; | |
78f81cc4 BD |
152 | struct acpi_object_list params; |
153 | union acpi_object in_objs[IBM_MAX_ACPI_ARGS]; | |
154 | struct acpi_buffer result, *resultp; | |
155 | union acpi_object out_obj; | |
156 | acpi_status status; | |
157 | va_list ap; | |
158 | char res_type; | |
159 | int success; | |
160 | int quiet; | |
1da177e4 LT |
161 | |
162 | if (!*fmt) { | |
163 | printk(IBM_ERR "acpi_evalf() called with empty format\n"); | |
164 | return 0; | |
165 | } | |
166 | ||
167 | if (*fmt == 'q') { | |
168 | quiet = 1; | |
169 | fmt++; | |
170 | } else | |
171 | quiet = 0; | |
172 | ||
173 | res_type = *(fmt++); | |
174 | ||
175 | params.count = 0; | |
176 | params.pointer = &in_objs[0]; | |
177 | ||
178 | va_start(ap, fmt); | |
179 | while (*fmt) { | |
180 | char c = *(fmt++); | |
181 | switch (c) { | |
182 | case 'd': /* int */ | |
183 | in_objs[params.count].integer.value = va_arg(ap, int); | |
184 | in_objs[params.count++].type = ACPI_TYPE_INTEGER; | |
185 | break; | |
78f81cc4 | 186 | /* add more types as needed */ |
1da177e4 LT |
187 | default: |
188 | printk(IBM_ERR "acpi_evalf() called " | |
189 | "with invalid format character '%c'\n", c); | |
190 | return 0; | |
191 | } | |
192 | } | |
193 | va_end(ap); | |
194 | ||
78f81cc4 BD |
195 | if (res_type != 'v') { |
196 | result.length = sizeof(out_obj); | |
197 | result.pointer = &out_obj; | |
198 | resultp = &result; | |
199 | } else | |
200 | resultp = NULL; | |
1da177e4 | 201 | |
78f81cc4 | 202 | status = acpi_evaluate_object(handle, method, ¶ms, resultp); |
1da177e4 LT |
203 | |
204 | switch (res_type) { | |
78f81cc4 | 205 | case 'd': /* int */ |
1da177e4 LT |
206 | if (res) |
207 | *(int *)res = out_obj.integer.value; | |
208 | success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER; | |
209 | break; | |
78f81cc4 | 210 | case 'v': /* void */ |
1da177e4 LT |
211 | success = status == AE_OK; |
212 | break; | |
78f81cc4 | 213 | /* add more types as needed */ |
1da177e4 LT |
214 | default: |
215 | printk(IBM_ERR "acpi_evalf() called " | |
216 | "with invalid format character '%c'\n", res_type); | |
217 | return 0; | |
218 | } | |
219 | ||
56b6aeb0 HMH |
220 | if (!success && !quiet) |
221 | printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n", | |
222 | method, fmt0, status); | |
223 | ||
224 | return success; | |
225 | } | |
226 | ||
227 | static void __unused acpi_print_int(acpi_handle handle, char *method) | |
228 | { | |
229 | int i; | |
230 | ||
231 | if (acpi_evalf(handle, &i, method, "d")) | |
232 | printk(IBM_INFO "%s = 0x%x\n", method, i); | |
233 | else | |
234 | printk(IBM_ERR "error calling %s\n", method); | |
235 | } | |
236 | ||
237 | static int acpi_ec_read(int i, u8 * p) | |
238 | { | |
239 | int v; | |
240 | ||
241 | if (ecrd_handle) { | |
242 | if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) | |
243 | return 0; | |
244 | *p = v; | |
245 | } else { | |
246 | if (ec_read(i, p) < 0) | |
247 | return 0; | |
248 | } | |
249 | ||
250 | return 1; | |
251 | } | |
252 | ||
253 | static int acpi_ec_write(int i, u8 v) | |
254 | { | |
255 | if (ecwr_handle) { | |
256 | if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) | |
257 | return 0; | |
258 | } else { | |
259 | if (ec_write(i, v) < 0) | |
260 | return 0; | |
261 | } | |
262 | ||
263 | return 1; | |
264 | } | |
265 | ||
266 | static int _sta(acpi_handle handle) | |
267 | { | |
268 | int status; | |
269 | ||
270 | if (!handle || !acpi_evalf(handle, &status, "_STA", "d")) | |
271 | status = 0; | |
272 | ||
273 | return status; | |
274 | } | |
275 | ||
276 | /************************************************************************* | |
277 | * ACPI device model | |
278 | */ | |
279 | ||
280 | static void __init ibm_handle_init(char *name, | |
281 | acpi_handle * handle, acpi_handle parent, | |
282 | char **paths, int num_paths, char **path) | |
283 | { | |
284 | int i; | |
285 | acpi_status status; | |
286 | ||
287 | for (i = 0; i < num_paths; i++) { | |
288 | status = acpi_get_handle(parent, paths[i], handle); | |
289 | if (ACPI_SUCCESS(status)) { | |
290 | *path = paths[i]; | |
291 | return; | |
292 | } | |
293 | } | |
294 | ||
295 | *handle = NULL; | |
296 | } | |
297 | ||
298 | static void dispatch_notify(acpi_handle handle, u32 event, void *data) | |
299 | { | |
300 | struct ibm_struct *ibm = data; | |
301 | ||
302 | if (!ibm || !ibm->notify) | |
303 | return; | |
304 | ||
305 | ibm->notify(ibm, event); | |
306 | } | |
307 | ||
308 | static int __init setup_notify(struct ibm_struct *ibm) | |
309 | { | |
310 | acpi_status status; | |
311 | int ret; | |
312 | ||
313 | if (!*ibm->handle) | |
314 | return 0; | |
315 | ||
316 | ret = acpi_bus_get_device(*ibm->handle, &ibm->device); | |
317 | if (ret < 0) { | |
318 | printk(IBM_ERR "%s device not present\n", ibm->name); | |
319 | return -ENODEV; | |
320 | } | |
321 | ||
322 | acpi_driver_data(ibm->device) = ibm; | |
643f12db HMH |
323 | sprintf(acpi_device_class(ibm->device), "%s/%s", |
324 | IBM_ACPI_EVENT_PREFIX, | |
325 | ibm->name); | |
56b6aeb0 HMH |
326 | |
327 | status = acpi_install_notify_handler(*ibm->handle, ibm->type, | |
328 | dispatch_notify, ibm); | |
329 | if (ACPI_FAILURE(status)) { | |
330 | if (status == AE_ALREADY_EXISTS) { | |
331 | printk(IBM_NOTICE "another device driver is already handling %s events\n", | |
332 | ibm->name); | |
333 | } else { | |
334 | printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n", | |
335 | ibm->name, status); | |
336 | } | |
337 | return -ENODEV; | |
338 | } | |
339 | ibm->notify_installed = 1; | |
340 | return 0; | |
341 | } | |
342 | ||
343 | static int __init ibm_device_add(struct acpi_device *device) | |
344 | { | |
345 | return 0; | |
346 | } | |
347 | ||
348 | static int __init register_ibmacpi_subdriver(struct ibm_struct *ibm) | |
349 | { | |
350 | int ret; | |
351 | ||
352 | ibm->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); | |
353 | if (!ibm->driver) { | |
354 | printk(IBM_ERR "kmalloc(ibm->driver) failed\n"); | |
355 | return -1; | |
356 | } | |
357 | ||
358 | sprintf(ibm->driver->name, "%s_%s", IBM_NAME, ibm->name); | |
359 | ibm->driver->ids = ibm->hid; | |
360 | ibm->driver->ops.add = &ibm_device_add; | |
361 | ||
362 | ret = acpi_bus_register_driver(ibm->driver); | |
363 | if (ret < 0) { | |
364 | printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n", | |
365 | ibm->hid, ret); | |
366 | kfree(ibm->driver); | |
367 | } | |
368 | ||
369 | return ret; | |
370 | } | |
371 | ||
372 | ||
373 | /**************************************************************************** | |
374 | **************************************************************************** | |
375 | * | |
376 | * Procfs Helpers | |
377 | * | |
378 | **************************************************************************** | |
379 | ****************************************************************************/ | |
380 | ||
381 | static int dispatch_read(char *page, char **start, off_t off, int count, | |
382 | int *eof, void *data) | |
383 | { | |
384 | struct ibm_struct *ibm = data; | |
385 | int len; | |
386 | ||
387 | if (!ibm || !ibm->read) | |
388 | return -EINVAL; | |
389 | ||
390 | len = ibm->read(page); | |
391 | if (len < 0) | |
392 | return len; | |
393 | ||
394 | if (len <= off + count) | |
395 | *eof = 1; | |
396 | *start = page + off; | |
397 | len -= off; | |
398 | if (len > count) | |
399 | len = count; | |
400 | if (len < 0) | |
401 | len = 0; | |
402 | ||
403 | return len; | |
404 | } | |
405 | ||
406 | static int dispatch_write(struct file *file, const char __user * userbuf, | |
407 | unsigned long count, void *data) | |
408 | { | |
409 | struct ibm_struct *ibm = data; | |
410 | char *kernbuf; | |
411 | int ret; | |
412 | ||
413 | if (!ibm || !ibm->write) | |
414 | return -EINVAL; | |
415 | ||
416 | kernbuf = kmalloc(count + 2, GFP_KERNEL); | |
417 | if (!kernbuf) | |
418 | return -ENOMEM; | |
1da177e4 | 419 | |
56b6aeb0 HMH |
420 | if (copy_from_user(kernbuf, userbuf, count)) { |
421 | kfree(kernbuf); | |
422 | return -EFAULT; | |
423 | } | |
1da177e4 | 424 | |
56b6aeb0 HMH |
425 | kernbuf[count] = 0; |
426 | strcat(kernbuf, ","); | |
427 | ret = ibm->write(kernbuf); | |
428 | if (ret == 0) | |
429 | ret = count; | |
1da177e4 | 430 | |
56b6aeb0 HMH |
431 | kfree(kernbuf); |
432 | ||
433 | return ret; | |
1da177e4 LT |
434 | } |
435 | ||
436 | static char *next_cmd(char **cmds) | |
437 | { | |
438 | char *start = *cmds; | |
439 | char *end; | |
440 | ||
441 | while ((end = strchr(start, ',')) && end == start) | |
442 | start = end + 1; | |
443 | ||
444 | if (!end) | |
445 | return NULL; | |
446 | ||
447 | *end = 0; | |
448 | *cmds = end + 1; | |
449 | return start; | |
450 | } | |
451 | ||
56b6aeb0 HMH |
452 | |
453 | /**************************************************************************** | |
454 | **************************************************************************** | |
455 | * | |
456 | * Subdrivers | |
457 | * | |
458 | **************************************************************************** | |
459 | ****************************************************************************/ | |
460 | ||
461 | /************************************************************************* | |
462 | * ibm-acpi init subdriver | |
463 | */ | |
464 | ||
643f12db | 465 | static int thinkpad_acpi_driver_init(void) |
1da177e4 LT |
466 | { |
467 | printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION); | |
468 | printk(IBM_INFO "%s\n", IBM_URL); | |
469 | ||
3945ac36 HMH |
470 | if (ibm_thinkpad_ec_found) |
471 | printk(IBM_INFO "ThinkPad EC firmware %s\n", | |
472 | ibm_thinkpad_ec_found); | |
473 | ||
1da177e4 LT |
474 | return 0; |
475 | } | |
476 | ||
643f12db | 477 | static int thinkpad_acpi_driver_read(char *p) |
1da177e4 LT |
478 | { |
479 | int len = 0; | |
480 | ||
481 | len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC); | |
482 | len += sprintf(p + len, "version:\t%s\n", IBM_VERSION); | |
483 | ||
484 | return len; | |
485 | } | |
486 | ||
56b6aeb0 HMH |
487 | /************************************************************************* |
488 | * Hotkey subdriver | |
489 | */ | |
490 | ||
78f81cc4 BD |
491 | static int hotkey_supported; |
492 | static int hotkey_mask_supported; | |
493 | static int hotkey_orig_status; | |
494 | static int hotkey_orig_mask; | |
495 | ||
56b6aeb0 HMH |
496 | static int hotkey_init(void) |
497 | { | |
498 | /* hotkey not supported on 570 */ | |
499 | hotkey_supported = hkey_handle != NULL; | |
500 | ||
501 | if (hotkey_supported) { | |
502 | /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, | |
503 | A30, R30, R31, T20-22, X20-21, X22-24 */ | |
504 | hotkey_mask_supported = | |
505 | acpi_evalf(hkey_handle, NULL, "DHKN", "qv"); | |
506 | ||
507 | if (!hotkey_get(&hotkey_orig_status, &hotkey_orig_mask)) | |
508 | return -ENODEV; | |
509 | } | |
510 | ||
511 | return 0; | |
512 | } | |
513 | ||
514 | static void hotkey_exit(void) | |
515 | { | |
516 | if (hotkey_supported) | |
517 | hotkey_set(hotkey_orig_status, hotkey_orig_mask); | |
518 | } | |
519 | ||
520 | static void hotkey_notify(struct ibm_struct *ibm, u32 event) | |
521 | { | |
522 | int hkey; | |
523 | ||
524 | if (acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) | |
525 | acpi_bus_generate_event(ibm->device, event, hkey); | |
526 | else { | |
527 | printk(IBM_ERR "unknown hotkey event %d\n", event); | |
528 | acpi_bus_generate_event(ibm->device, event, 0); | |
529 | } | |
530 | } | |
531 | ||
78f81cc4 | 532 | static int hotkey_get(int *status, int *mask) |
1da177e4 LT |
533 | { |
534 | if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) | |
78f81cc4 BD |
535 | return 0; |
536 | ||
537 | if (hotkey_mask_supported) | |
538 | if (!acpi_evalf(hkey_handle, mask, "DHKN", "d")) | |
539 | return 0; | |
540 | ||
541 | return 1; | |
1da177e4 LT |
542 | } |
543 | ||
78f81cc4 | 544 | static int hotkey_set(int status, int mask) |
1da177e4 LT |
545 | { |
546 | int i; | |
547 | ||
548 | if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status)) | |
1da177e4 LT |
549 | return 0; |
550 | ||
78f81cc4 BD |
551 | if (hotkey_mask_supported) |
552 | for (i = 0; i < 32; i++) { | |
553 | int bit = ((1 << i) & mask) != 0; | |
554 | if (!acpi_evalf(hkey_handle, | |
555 | NULL, "MHKM", "vdd", i + 1, bit)) | |
556 | return 0; | |
557 | } | |
1da177e4 | 558 | |
78f81cc4 | 559 | return 1; |
1da177e4 LT |
560 | } |
561 | ||
78f81cc4 | 562 | static int hotkey_read(char *p) |
1da177e4 LT |
563 | { |
564 | int status, mask; | |
565 | int len = 0; | |
566 | ||
78f81cc4 BD |
567 | if (!hotkey_supported) { |
568 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
569 | return len; | |
570 | } | |
571 | ||
572 | if (!hotkey_get(&status, &mask)) | |
1da177e4 LT |
573 | return -EIO; |
574 | ||
575 | len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0)); | |
78f81cc4 | 576 | if (hotkey_mask_supported) { |
1da177e4 LT |
577 | len += sprintf(p + len, "mask:\t\t0x%04x\n", mask); |
578 | len += sprintf(p + len, | |
579 | "commands:\tenable, disable, reset, <mask>\n"); | |
580 | } else { | |
581 | len += sprintf(p + len, "mask:\t\tnot supported\n"); | |
582 | len += sprintf(p + len, "commands:\tenable, disable, reset\n"); | |
583 | } | |
584 | ||
585 | return len; | |
586 | } | |
587 | ||
78f81cc4 | 588 | static int hotkey_write(char *buf) |
1da177e4 LT |
589 | { |
590 | int status, mask; | |
591 | char *cmd; | |
592 | int do_cmd = 0; | |
593 | ||
78f81cc4 | 594 | if (!hotkey_supported) |
1da177e4 LT |
595 | return -ENODEV; |
596 | ||
78f81cc4 BD |
597 | if (!hotkey_get(&status, &mask)) |
598 | return -EIO; | |
599 | ||
1da177e4 LT |
600 | while ((cmd = next_cmd(&buf))) { |
601 | if (strlencmp(cmd, "enable") == 0) { | |
602 | status = 1; | |
603 | } else if (strlencmp(cmd, "disable") == 0) { | |
604 | status = 0; | |
605 | } else if (strlencmp(cmd, "reset") == 0) { | |
78f81cc4 BD |
606 | status = hotkey_orig_status; |
607 | mask = hotkey_orig_mask; | |
1da177e4 LT |
608 | } else if (sscanf(cmd, "0x%x", &mask) == 1) { |
609 | /* mask set */ | |
610 | } else if (sscanf(cmd, "%x", &mask) == 1) { | |
611 | /* mask set */ | |
612 | } else | |
613 | return -EINVAL; | |
614 | do_cmd = 1; | |
615 | } | |
616 | ||
78f81cc4 | 617 | if (do_cmd && !hotkey_set(status, mask)) |
1da177e4 LT |
618 | return -EIO; |
619 | ||
620 | return 0; | |
78f81cc4 | 621 | } |
1da177e4 | 622 | |
56b6aeb0 HMH |
623 | /************************************************************************* |
624 | * Bluetooth subdriver | |
625 | */ | |
1da177e4 | 626 | |
78f81cc4 BD |
627 | static int bluetooth_supported; |
628 | ||
629 | static int bluetooth_init(void) | |
1da177e4 | 630 | { |
78f81cc4 BD |
631 | /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
632 | G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ | |
633 | bluetooth_supported = hkey_handle && | |
634 | acpi_evalf(hkey_handle, NULL, "GBDC", "qv"); | |
1da177e4 LT |
635 | |
636 | return 0; | |
637 | } | |
638 | ||
78f81cc4 | 639 | static int bluetooth_status(void) |
1da177e4 LT |
640 | { |
641 | int status; | |
642 | ||
78f81cc4 BD |
643 | if (!bluetooth_supported || |
644 | !acpi_evalf(hkey_handle, &status, "GBDC", "d")) | |
1da177e4 LT |
645 | status = 0; |
646 | ||
647 | return status; | |
648 | } | |
649 | ||
78f81cc4 | 650 | static int bluetooth_read(char *p) |
1da177e4 LT |
651 | { |
652 | int len = 0; | |
78f81cc4 | 653 | int status = bluetooth_status(); |
1da177e4 | 654 | |
78f81cc4 | 655 | if (!bluetooth_supported) |
1da177e4 LT |
656 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
657 | else if (!(status & 1)) | |
658 | len += sprintf(p + len, "status:\t\tnot installed\n"); | |
659 | else { | |
660 | len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1)); | |
661 | len += sprintf(p + len, "commands:\tenable, disable\n"); | |
662 | } | |
663 | ||
664 | return len; | |
665 | } | |
666 | ||
78f81cc4 | 667 | static int bluetooth_write(char *buf) |
1da177e4 | 668 | { |
78f81cc4 | 669 | int status = bluetooth_status(); |
1da177e4 LT |
670 | char *cmd; |
671 | int do_cmd = 0; | |
672 | ||
78f81cc4 BD |
673 | if (!bluetooth_supported) |
674 | return -ENODEV; | |
1da177e4 LT |
675 | |
676 | while ((cmd = next_cmd(&buf))) { | |
677 | if (strlencmp(cmd, "enable") == 0) { | |
678 | status |= 2; | |
679 | } else if (strlencmp(cmd, "disable") == 0) { | |
680 | status &= ~2; | |
681 | } else | |
682 | return -EINVAL; | |
683 | do_cmd = 1; | |
684 | } | |
685 | ||
686 | if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) | |
78f81cc4 | 687 | return -EIO; |
1da177e4 LT |
688 | |
689 | return 0; | |
690 | } | |
691 | ||
56b6aeb0 HMH |
692 | /************************************************************************* |
693 | * Wan subdriver | |
694 | */ | |
695 | ||
42adb53c JF |
696 | static int wan_supported; |
697 | ||
698 | static int wan_init(void) | |
699 | { | |
700 | wan_supported = hkey_handle && | |
701 | acpi_evalf(hkey_handle, NULL, "GWAN", "qv"); | |
702 | ||
703 | return 0; | |
704 | } | |
705 | ||
706 | static int wan_status(void) | |
707 | { | |
708 | int status; | |
709 | ||
8d297264 | 710 | if (!wan_supported || !acpi_evalf(hkey_handle, &status, "GWAN", "d")) |
42adb53c JF |
711 | status = 0; |
712 | ||
713 | return status; | |
714 | } | |
715 | ||
716 | static int wan_read(char *p) | |
717 | { | |
718 | int len = 0; | |
719 | int status = wan_status(); | |
720 | ||
721 | if (!wan_supported) | |
722 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
723 | else if (!(status & 1)) | |
724 | len += sprintf(p + len, "status:\t\tnot installed\n"); | |
725 | else { | |
726 | len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1)); | |
727 | len += sprintf(p + len, "commands:\tenable, disable\n"); | |
728 | } | |
729 | ||
730 | return len; | |
731 | } | |
732 | ||
733 | static int wan_write(char *buf) | |
734 | { | |
735 | int status = wan_status(); | |
736 | char *cmd; | |
737 | int do_cmd = 0; | |
738 | ||
739 | if (!wan_supported) | |
740 | return -ENODEV; | |
741 | ||
742 | while ((cmd = next_cmd(&buf))) { | |
743 | if (strlencmp(cmd, "enable") == 0) { | |
744 | status |= 2; | |
745 | } else if (strlencmp(cmd, "disable") == 0) { | |
746 | status &= ~2; | |
747 | } else | |
748 | return -EINVAL; | |
749 | do_cmd = 1; | |
750 | } | |
751 | ||
752 | if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) | |
753 | return -EIO; | |
754 | ||
755 | return 0; | |
756 | } | |
757 | ||
56b6aeb0 HMH |
758 | /************************************************************************* |
759 | * Video subdriver | |
760 | */ | |
761 | ||
9a8e1738 HMH |
762 | static enum video_access_mode video_supported; |
763 | static int video_orig_autosw; | |
78f81cc4 | 764 | |
56b6aeb0 HMH |
765 | IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ |
766 | "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ | |
767 | "\\_SB.PCI0.VID0", /* 770e */ | |
768 | "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ | |
769 | "\\_SB.PCI0.AGP.VID", /* all others */ | |
770 | ); /* R30, R31 */ | |
771 | ||
772 | IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ | |
773 | ||
78f81cc4 | 774 | static int video_init(void) |
1da177e4 | 775 | { |
78f81cc4 BD |
776 | int ivga; |
777 | ||
778 | if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) | |
779 | /* G41, assume IVGA doesn't change */ | |
780 | vid_handle = vid2_handle; | |
781 | ||
782 | if (!vid_handle) | |
783 | /* video switching not supported on R30, R31 */ | |
9a8e1738 | 784 | video_supported = IBMACPI_VIDEO_NONE; |
78f81cc4 BD |
785 | else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) |
786 | /* 570 */ | |
9a8e1738 | 787 | video_supported = IBMACPI_VIDEO_570; |
78f81cc4 BD |
788 | else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) |
789 | /* 600e/x, 770e, 770x */ | |
9a8e1738 | 790 | video_supported = IBMACPI_VIDEO_770; |
78f81cc4 BD |
791 | else |
792 | /* all others */ | |
9a8e1738 | 793 | video_supported = IBMACPI_VIDEO_NEW; |
1da177e4 LT |
794 | |
795 | return 0; | |
796 | } | |
797 | ||
56b6aeb0 HMH |
798 | static void video_exit(void) |
799 | { | |
800 | acpi_evalf(vid_handle, NULL, "_DOS", "vd", video_orig_autosw); | |
801 | } | |
802 | ||
78f81cc4 | 803 | static int video_status(void) |
1da177e4 LT |
804 | { |
805 | int status = 0; | |
806 | int i; | |
807 | ||
9a8e1738 | 808 | if (video_supported == IBMACPI_VIDEO_570) { |
78f81cc4 BD |
809 | if (acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 0x87)) |
810 | status = i & 3; | |
9a8e1738 | 811 | } else if (video_supported == IBMACPI_VIDEO_770) { |
78f81cc4 BD |
812 | if (acpi_evalf(NULL, &i, "\\VCDL", "d")) |
813 | status |= 0x01 * i; | |
814 | if (acpi_evalf(NULL, &i, "\\VCDC", "d")) | |
815 | status |= 0x02 * i; | |
9a8e1738 | 816 | } else if (video_supported == IBMACPI_VIDEO_NEW) { |
78f81cc4 BD |
817 | acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1); |
818 | if (acpi_evalf(NULL, &i, "\\VCDC", "d")) | |
819 | status |= 0x02 * i; | |
820 | ||
821 | acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0); | |
822 | if (acpi_evalf(NULL, &i, "\\VCDL", "d")) | |
823 | status |= 0x01 * i; | |
824 | if (acpi_evalf(NULL, &i, "\\VCDD", "d")) | |
825 | status |= 0x08 * i; | |
826 | } | |
827 | ||
828 | return status; | |
829 | } | |
1da177e4 | 830 | |
78f81cc4 BD |
831 | static int video_autosw(void) |
832 | { | |
833 | int autosw = 0; | |
1da177e4 | 834 | |
9a8e1738 | 835 | if (video_supported == IBMACPI_VIDEO_570) |
78f81cc4 | 836 | acpi_evalf(vid_handle, &autosw, "SWIT", "d"); |
9a8e1738 HMH |
837 | else if (video_supported == IBMACPI_VIDEO_770 || |
838 | video_supported == IBMACPI_VIDEO_NEW) | |
78f81cc4 | 839 | acpi_evalf(vid_handle, &autosw, "^VDEE", "d"); |
1da177e4 | 840 | |
78f81cc4 | 841 | return autosw & 1; |
1da177e4 LT |
842 | } |
843 | ||
78f81cc4 BD |
844 | static int video_switch(void) |
845 | { | |
846 | int autosw = video_autosw(); | |
847 | int ret; | |
848 | ||
849 | if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1)) | |
850 | return -EIO; | |
9a8e1738 | 851 | ret = video_supported == IBMACPI_VIDEO_570 ? |
78f81cc4 BD |
852 | acpi_evalf(ec_handle, NULL, "_Q16", "v") : |
853 | acpi_evalf(vid_handle, NULL, "VSWT", "v"); | |
854 | acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw); | |
855 | ||
856 | return ret; | |
857 | } | |
858 | ||
859 | static int video_expand(void) | |
860 | { | |
9a8e1738 | 861 | if (video_supported == IBMACPI_VIDEO_570) |
78f81cc4 | 862 | return acpi_evalf(ec_handle, NULL, "_Q17", "v"); |
9a8e1738 | 863 | else if (video_supported == IBMACPI_VIDEO_770) |
78f81cc4 BD |
864 | return acpi_evalf(vid_handle, NULL, "VEXP", "v"); |
865 | else | |
866 | return acpi_evalf(NULL, NULL, "\\VEXP", "v"); | |
867 | } | |
868 | ||
869 | static int video_switch2(int status) | |
870 | { | |
871 | int ret; | |
872 | ||
9a8e1738 | 873 | if (video_supported == IBMACPI_VIDEO_570) { |
78f81cc4 BD |
874 | ret = acpi_evalf(NULL, NULL, |
875 | "\\_SB.PHS2", "vdd", 0x8b, status | 0x80); | |
9a8e1738 | 876 | } else if (video_supported == IBMACPI_VIDEO_770) { |
78f81cc4 BD |
877 | int autosw = video_autosw(); |
878 | if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1)) | |
879 | return -EIO; | |
880 | ||
881 | ret = acpi_evalf(vid_handle, NULL, | |
882 | "ASWT", "vdd", status * 0x100, 0); | |
883 | ||
884 | acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw); | |
885 | } else { | |
886 | ret = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && | |
887 | acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); | |
888 | } | |
889 | ||
890 | return ret; | |
891 | } | |
892 | ||
56b6aeb0 HMH |
893 | static int video_read(char *p) |
894 | { | |
895 | int status = video_status(); | |
896 | int autosw = video_autosw(); | |
897 | int len = 0; | |
898 | ||
899 | if (!video_supported) { | |
900 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
901 | return len; | |
902 | } | |
903 | ||
904 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
905 | len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0)); | |
906 | len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1)); | |
907 | if (video_supported == IBMACPI_VIDEO_NEW) | |
908 | len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3)); | |
909 | len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0)); | |
910 | len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n"); | |
911 | len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n"); | |
912 | if (video_supported == IBMACPI_VIDEO_NEW) | |
913 | len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n"); | |
914 | len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n"); | |
915 | len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n"); | |
916 | ||
917 | return len; | |
918 | } | |
919 | ||
78f81cc4 | 920 | static int video_write(char *buf) |
1da177e4 LT |
921 | { |
922 | char *cmd; | |
923 | int enable, disable, status; | |
924 | ||
78f81cc4 BD |
925 | if (!video_supported) |
926 | return -ENODEV; | |
927 | ||
1da177e4 LT |
928 | enable = disable = 0; |
929 | ||
930 | while ((cmd = next_cmd(&buf))) { | |
931 | if (strlencmp(cmd, "lcd_enable") == 0) { | |
932 | enable |= 0x01; | |
933 | } else if (strlencmp(cmd, "lcd_disable") == 0) { | |
934 | disable |= 0x01; | |
935 | } else if (strlencmp(cmd, "crt_enable") == 0) { | |
936 | enable |= 0x02; | |
937 | } else if (strlencmp(cmd, "crt_disable") == 0) { | |
938 | disable |= 0x02; | |
9a8e1738 | 939 | } else if (video_supported == IBMACPI_VIDEO_NEW && |
78f81cc4 | 940 | strlencmp(cmd, "dvi_enable") == 0) { |
1da177e4 | 941 | enable |= 0x08; |
9a8e1738 | 942 | } else if (video_supported == IBMACPI_VIDEO_NEW && |
78f81cc4 | 943 | strlencmp(cmd, "dvi_disable") == 0) { |
1da177e4 LT |
944 | disable |= 0x08; |
945 | } else if (strlencmp(cmd, "auto_enable") == 0) { | |
946 | if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1)) | |
947 | return -EIO; | |
948 | } else if (strlencmp(cmd, "auto_disable") == 0) { | |
949 | if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 0)) | |
950 | return -EIO; | |
951 | } else if (strlencmp(cmd, "video_switch") == 0) { | |
78f81cc4 | 952 | if (!video_switch()) |
1da177e4 LT |
953 | return -EIO; |
954 | } else if (strlencmp(cmd, "expand_toggle") == 0) { | |
78f81cc4 | 955 | if (!video_expand()) |
1da177e4 LT |
956 | return -EIO; |
957 | } else | |
958 | return -EINVAL; | |
959 | } | |
960 | ||
961 | if (enable || disable) { | |
78f81cc4 BD |
962 | status = (video_status() & 0x0f & ~disable) | enable; |
963 | if (!video_switch2(status)) | |
1da177e4 LT |
964 | return -EIO; |
965 | } | |
966 | ||
967 | return 0; | |
968 | } | |
969 | ||
56b6aeb0 HMH |
970 | /************************************************************************* |
971 | * Light (thinklight) subdriver | |
972 | */ | |
1da177e4 | 973 | |
78f81cc4 BD |
974 | static int light_supported; |
975 | static int light_status_supported; | |
976 | ||
56b6aeb0 HMH |
977 | IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ |
978 | IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */ | |
979 | ||
78f81cc4 | 980 | static int light_init(void) |
1da177e4 | 981 | { |
78f81cc4 BD |
982 | /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ |
983 | light_supported = (cmos_handle || lght_handle) && !ledb_handle; | |
984 | ||
985 | if (light_supported) | |
986 | /* light status not supported on | |
987 | 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ | |
988 | light_status_supported = acpi_evalf(ec_handle, NULL, | |
989 | "KBLT", "qv"); | |
1da177e4 LT |
990 | |
991 | return 0; | |
992 | } | |
993 | ||
78f81cc4 | 994 | static int light_read(char *p) |
1da177e4 LT |
995 | { |
996 | int len = 0; | |
997 | int status = 0; | |
998 | ||
78f81cc4 BD |
999 | if (!light_supported) { |
1000 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1001 | } else if (!light_status_supported) { | |
1002 | len += sprintf(p + len, "status:\t\tunknown\n"); | |
1003 | len += sprintf(p + len, "commands:\ton, off\n"); | |
1004 | } else { | |
1da177e4 LT |
1005 | if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) |
1006 | return -EIO; | |
1007 | len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0)); | |
78f81cc4 BD |
1008 | len += sprintf(p + len, "commands:\ton, off\n"); |
1009 | } | |
1da177e4 LT |
1010 | |
1011 | return len; | |
1012 | } | |
1013 | ||
78f81cc4 | 1014 | static int light_write(char *buf) |
1da177e4 LT |
1015 | { |
1016 | int cmos_cmd, lght_cmd; | |
1017 | char *cmd; | |
1018 | int success; | |
78f81cc4 BD |
1019 | |
1020 | if (!light_supported) | |
1021 | return -ENODEV; | |
1022 | ||
1da177e4 LT |
1023 | while ((cmd = next_cmd(&buf))) { |
1024 | if (strlencmp(cmd, "on") == 0) { | |
1025 | cmos_cmd = 0x0c; | |
1026 | lght_cmd = 1; | |
1027 | } else if (strlencmp(cmd, "off") == 0) { | |
1028 | cmos_cmd = 0x0d; | |
1029 | lght_cmd = 0; | |
1030 | } else | |
1031 | return -EINVAL; | |
78f81cc4 | 1032 | |
1da177e4 | 1033 | success = cmos_handle ? |
78f81cc4 BD |
1034 | acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) : |
1035 | acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd); | |
1da177e4 LT |
1036 | if (!success) |
1037 | return -EIO; | |
1038 | } | |
1039 | ||
1040 | return 0; | |
1041 | } | |
1042 | ||
56b6aeb0 HMH |
1043 | /************************************************************************* |
1044 | * Dock subdriver | |
1045 | */ | |
1da177e4 | 1046 | |
56b6aeb0 HMH |
1047 | /* don't list other alternatives as we install a notify handler on the 570 */ |
1048 | IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */ | |
d2fadbbb | 1049 | |
85998248 | 1050 | #ifdef CONFIG_THINKPAD_ACPI_DOCK |
56b6aeb0 HMH |
1051 | |
1052 | IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */ | |
1053 | "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */ | |
1054 | "\\_SB.PCI0.PCI1.DOCK", /* all others */ | |
1055 | "\\_SB.PCI.ISA.SLCE", /* 570 */ | |
1056 | ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */ | |
1057 | ||
1da177e4 LT |
1058 | #define dock_docked() (_sta(dock_handle) & 1) |
1059 | ||
56b6aeb0 HMH |
1060 | static void dock_notify(struct ibm_struct *ibm, u32 event) |
1061 | { | |
1062 | int docked = dock_docked(); | |
1063 | int pci = ibm->hid && strstr(ibm->hid, IBM_PCI_HID); | |
1064 | ||
1065 | if (event == 1 && !pci) /* 570 */ | |
1066 | acpi_bus_generate_event(ibm->device, event, 1); /* button */ | |
1067 | else if (event == 1 && pci) /* 570 */ | |
1068 | acpi_bus_generate_event(ibm->device, event, 3); /* dock */ | |
1069 | else if (event == 3 && docked) | |
1070 | acpi_bus_generate_event(ibm->device, event, 1); /* button */ | |
1071 | else if (event == 3 && !docked) | |
1072 | acpi_bus_generate_event(ibm->device, event, 2); /* undock */ | |
1073 | else if (event == 0 && docked) | |
1074 | acpi_bus_generate_event(ibm->device, event, 3); /* dock */ | |
1075 | else { | |
1076 | printk(IBM_ERR "unknown dock event %d, status %d\n", | |
1077 | event, _sta(dock_handle)); | |
1078 | acpi_bus_generate_event(ibm->device, event, 0); /* unknown */ | |
1079 | } | |
1080 | } | |
1081 | ||
78f81cc4 | 1082 | static int dock_read(char *p) |
1da177e4 LT |
1083 | { |
1084 | int len = 0; | |
1085 | int docked = dock_docked(); | |
1086 | ||
1087 | if (!dock_handle) | |
1088 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1089 | else if (!docked) | |
1090 | len += sprintf(p + len, "status:\t\tundocked\n"); | |
1091 | else { | |
1092 | len += sprintf(p + len, "status:\t\tdocked\n"); | |
1093 | len += sprintf(p + len, "commands:\tdock, undock\n"); | |
1094 | } | |
1095 | ||
1096 | return len; | |
1097 | } | |
1098 | ||
78f81cc4 | 1099 | static int dock_write(char *buf) |
1da177e4 LT |
1100 | { |
1101 | char *cmd; | |
1102 | ||
1103 | if (!dock_docked()) | |
78f81cc4 | 1104 | return -ENODEV; |
1da177e4 LT |
1105 | |
1106 | while ((cmd = next_cmd(&buf))) { | |
1107 | if (strlencmp(cmd, "undock") == 0) { | |
78f81cc4 BD |
1108 | if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) || |
1109 | !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1)) | |
56b6aeb0 HMH |
1110 | return -EIO; |
1111 | } else if (strlencmp(cmd, "dock") == 0) { | |
1112 | if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1)) | |
1113 | return -EIO; | |
1114 | } else | |
1115 | return -EINVAL; | |
1da177e4 | 1116 | } |
56b6aeb0 HMH |
1117 | |
1118 | return 0; | |
1da177e4 | 1119 | } |
56b6aeb0 | 1120 | |
85998248 | 1121 | #endif /* CONFIG_THINKPAD_ACPI_DOCK */ |
56b6aeb0 HMH |
1122 | |
1123 | /************************************************************************* | |
1124 | * Bay subdriver | |
1125 | */ | |
1da177e4 | 1126 | |
85998248 | 1127 | #ifdef CONFIG_THINKPAD_ACPI_BAY |
78f81cc4 BD |
1128 | static int bay_status_supported; |
1129 | static int bay_status2_supported; | |
1130 | static int bay_eject_supported; | |
1131 | static int bay_eject2_supported; | |
1da177e4 | 1132 | |
56b6aeb0 HMH |
1133 | IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */ |
1134 | "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */ | |
1135 | "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */ | |
1136 | "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */ | |
1137 | ); /* A21e, R30, R31 */ | |
1138 | IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */ | |
1139 | "_EJ0", /* all others */ | |
1140 | ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */ | |
1141 | IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */ | |
1142 | "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */ | |
1143 | ); /* all others */ | |
1144 | IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */ | |
1145 | "_EJ0", /* 770x */ | |
1146 | ); /* all others */ | |
1147 | ||
78f81cc4 | 1148 | static int bay_init(void) |
1da177e4 | 1149 | { |
78f81cc4 BD |
1150 | bay_status_supported = bay_handle && |
1151 | acpi_evalf(bay_handle, NULL, "_STA", "qv"); | |
1152 | bay_status2_supported = bay2_handle && | |
1153 | acpi_evalf(bay2_handle, NULL, "_STA", "qv"); | |
1154 | ||
1155 | bay_eject_supported = bay_handle && bay_ej_handle && | |
1156 | (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental); | |
1157 | bay_eject2_supported = bay2_handle && bay2_ej_handle && | |
1158 | (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental); | |
1da177e4 LT |
1159 | |
1160 | return 0; | |
1161 | } | |
1162 | ||
56b6aeb0 HMH |
1163 | static void bay_notify(struct ibm_struct *ibm, u32 event) |
1164 | { | |
1165 | acpi_bus_generate_event(ibm->device, event, 0); | |
1166 | } | |
1167 | ||
78f81cc4 BD |
1168 | #define bay_occupied(b) (_sta(b##_handle) & 1) |
1169 | ||
1170 | static int bay_read(char *p) | |
1da177e4 LT |
1171 | { |
1172 | int len = 0; | |
78f81cc4 BD |
1173 | int occupied = bay_occupied(bay); |
1174 | int occupied2 = bay_occupied(bay2); | |
1175 | int eject, eject2; | |
1176 | ||
1177 | len += sprintf(p + len, "status:\t\t%s\n", bay_status_supported ? | |
1178 | (occupied ? "occupied" : "unoccupied") : | |
1179 | "not supported"); | |
1180 | if (bay_status2_supported) | |
1181 | len += sprintf(p + len, "status2:\t%s\n", occupied2 ? | |
1182 | "occupied" : "unoccupied"); | |
1183 | ||
1184 | eject = bay_eject_supported && occupied; | |
1185 | eject2 = bay_eject2_supported && occupied2; | |
1186 | ||
1187 | if (eject && eject2) | |
1188 | len += sprintf(p + len, "commands:\teject, eject2\n"); | |
1189 | else if (eject) | |
1da177e4 | 1190 | len += sprintf(p + len, "commands:\teject\n"); |
78f81cc4 BD |
1191 | else if (eject2) |
1192 | len += sprintf(p + len, "commands:\teject2\n"); | |
1da177e4 LT |
1193 | |
1194 | return len; | |
1195 | } | |
1196 | ||
78f81cc4 | 1197 | static int bay_write(char *buf) |
1da177e4 LT |
1198 | { |
1199 | char *cmd; | |
1200 | ||
78f81cc4 BD |
1201 | if (!bay_eject_supported && !bay_eject2_supported) |
1202 | return -ENODEV; | |
1203 | ||
1da177e4 | 1204 | while ((cmd = next_cmd(&buf))) { |
78f81cc4 BD |
1205 | if (bay_eject_supported && strlencmp(cmd, "eject") == 0) { |
1206 | if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1)) | |
1207 | return -EIO; | |
1208 | } else if (bay_eject2_supported && | |
1209 | strlencmp(cmd, "eject2") == 0) { | |
1210 | if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1)) | |
1da177e4 LT |
1211 | return -EIO; |
1212 | } else | |
1213 | return -EINVAL; | |
1214 | } | |
1215 | ||
1216 | return 0; | |
78f81cc4 | 1217 | } |
85998248 | 1218 | #endif /* CONFIG_THINKPAD_ACPI_BAY */ |
1da177e4 | 1219 | |
56b6aeb0 HMH |
1220 | /************************************************************************* |
1221 | * CMOS subdriver | |
1222 | */ | |
1223 | ||
1224 | static int cmos_eval(int cmos_cmd) | |
1da177e4 | 1225 | { |
56b6aeb0 HMH |
1226 | if (cmos_handle) |
1227 | return acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd); | |
1228 | else | |
1229 | return 1; | |
1da177e4 LT |
1230 | } |
1231 | ||
78f81cc4 | 1232 | static int cmos_read(char *p) |
1da177e4 LT |
1233 | { |
1234 | int len = 0; | |
1235 | ||
78f81cc4 BD |
1236 | /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
1237 | R30, R31, T20-22, X20-21 */ | |
1da177e4 LT |
1238 | if (!cmos_handle) |
1239 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1240 | else { | |
1241 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
78f81cc4 | 1242 | len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n"); |
1da177e4 LT |
1243 | } |
1244 | ||
1245 | return len; | |
1246 | } | |
1247 | ||
78f81cc4 | 1248 | static int cmos_write(char *buf) |
1da177e4 LT |
1249 | { |
1250 | char *cmd; | |
1251 | int cmos_cmd; | |
1252 | ||
1253 | if (!cmos_handle) | |
1254 | return -EINVAL; | |
1255 | ||
1256 | while ((cmd = next_cmd(&buf))) { | |
78f81cc4 BD |
1257 | if (sscanf(cmd, "%u", &cmos_cmd) == 1 && |
1258 | cmos_cmd >= 0 && cmos_cmd <= 21) { | |
1da177e4 LT |
1259 | /* cmos_cmd set */ |
1260 | } else | |
1261 | return -EINVAL; | |
1262 | ||
78f81cc4 | 1263 | if (!cmos_eval(cmos_cmd)) |
1da177e4 LT |
1264 | return -EIO; |
1265 | } | |
1266 | ||
1267 | return 0; | |
78f81cc4 BD |
1268 | } |
1269 | ||
56b6aeb0 HMH |
1270 | |
1271 | /************************************************************************* | |
1272 | * LED subdriver | |
1273 | */ | |
1274 | ||
9a8e1738 | 1275 | static enum led_access_mode led_supported; |
78f81cc4 | 1276 | |
56b6aeb0 HMH |
1277 | IBM_HANDLE(led, ec, "SLED", /* 570 */ |
1278 | "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ | |
1279 | "LED", /* all others */ | |
1280 | ); /* R30, R31 */ | |
1281 | ||
78f81cc4 BD |
1282 | static int led_init(void) |
1283 | { | |
1284 | if (!led_handle) | |
1285 | /* led not supported on R30, R31 */ | |
9a8e1738 | 1286 | led_supported = IBMACPI_LED_NONE; |
78f81cc4 BD |
1287 | else if (strlencmp(led_path, "SLED") == 0) |
1288 | /* 570 */ | |
9a8e1738 | 1289 | led_supported = IBMACPI_LED_570; |
78f81cc4 BD |
1290 | else if (strlencmp(led_path, "SYSL") == 0) |
1291 | /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ | |
9a8e1738 | 1292 | led_supported = IBMACPI_LED_OLD; |
78f81cc4 BD |
1293 | else |
1294 | /* all others */ | |
9a8e1738 | 1295 | led_supported = IBMACPI_LED_NEW; |
78f81cc4 BD |
1296 | |
1297 | return 0; | |
1298 | } | |
1299 | ||
1300 | #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking")) | |
1301 | ||
1302 | static int led_read(char *p) | |
1da177e4 LT |
1303 | { |
1304 | int len = 0; | |
1305 | ||
78f81cc4 BD |
1306 | if (!led_supported) { |
1307 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1308 | return len; | |
1309 | } | |
1310 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
1311 | ||
9a8e1738 | 1312 | if (led_supported == IBMACPI_LED_570) { |
78f81cc4 BD |
1313 | /* 570 */ |
1314 | int i, status; | |
1315 | for (i = 0; i < 8; i++) { | |
1316 | if (!acpi_evalf(ec_handle, | |
1317 | &status, "GLED", "dd", 1 << i)) | |
1318 | return -EIO; | |
1319 | len += sprintf(p + len, "%d:\t\t%s\n", | |
1320 | i, led_status(status)); | |
1321 | } | |
1322 | } | |
1323 | ||
1da177e4 | 1324 | len += sprintf(p + len, "commands:\t" |
78f81cc4 | 1325 | "<led> on, <led> off, <led> blink (<led> is 0-7)\n"); |
1da177e4 LT |
1326 | |
1327 | return len; | |
1328 | } | |
1329 | ||
78f81cc4 BD |
1330 | /* off, on, blink */ |
1331 | static const int led_sled_arg1[] = { 0, 1, 3 }; | |
1332 | static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */ | |
1333 | static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */ | |
1334 | static const int led_led_arg1[] = { 0, 0x80, 0xc0 }; | |
1335 | ||
78f81cc4 | 1336 | static int led_write(char *buf) |
1da177e4 LT |
1337 | { |
1338 | char *cmd; | |
78f81cc4 BD |
1339 | int led, ind, ret; |
1340 | ||
1341 | if (!led_supported) | |
1342 | return -ENODEV; | |
1da177e4 LT |
1343 | |
1344 | while ((cmd = next_cmd(&buf))) { | |
78f81cc4 | 1345 | if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7) |
1da177e4 LT |
1346 | return -EINVAL; |
1347 | ||
78f81cc4 BD |
1348 | if (strstr(cmd, "off")) { |
1349 | ind = 0; | |
1da177e4 | 1350 | } else if (strstr(cmd, "on")) { |
78f81cc4 BD |
1351 | ind = 1; |
1352 | } else if (strstr(cmd, "blink")) { | |
1353 | ind = 2; | |
1da177e4 LT |
1354 | } else |
1355 | return -EINVAL; | |
78f81cc4 | 1356 | |
9a8e1738 | 1357 | if (led_supported == IBMACPI_LED_570) { |
78f81cc4 BD |
1358 | /* 570 */ |
1359 | led = 1 << led; | |
1da177e4 | 1360 | if (!acpi_evalf(led_handle, NULL, NULL, "vdd", |
78f81cc4 | 1361 | led, led_sled_arg1[ind])) |
1da177e4 | 1362 | return -EIO; |
9a8e1738 | 1363 | } else if (led_supported == IBMACPI_LED_OLD) { |
78f81cc4 BD |
1364 | /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ |
1365 | led = 1 << led; | |
e062e034 | 1366 | ret = ec_write(IBMACPI_LED_EC_HLMS, led); |
78f81cc4 BD |
1367 | if (ret >= 0) |
1368 | ret = | |
e062e034 HMH |
1369 | ec_write(IBMACPI_LED_EC_HLBL, |
1370 | led * led_exp_hlbl[ind]); | |
78f81cc4 BD |
1371 | if (ret >= 0) |
1372 | ret = | |
e062e034 HMH |
1373 | ec_write(IBMACPI_LED_EC_HLCL, |
1374 | led * led_exp_hlcl[ind]); | |
78f81cc4 BD |
1375 | if (ret < 0) |
1376 | return ret; | |
1377 | } else { | |
1378 | /* all others */ | |
1379 | if (!acpi_evalf(led_handle, NULL, NULL, "vdd", | |
1380 | led, led_led_arg1[ind])) | |
1da177e4 | 1381 | return -EIO; |
78f81cc4 BD |
1382 | } |
1383 | } | |
1384 | ||
1385 | return 0; | |
1386 | } | |
1387 | ||
56b6aeb0 HMH |
1388 | /************************************************************************* |
1389 | * Beep subdriver | |
1390 | */ | |
1391 | ||
1392 | IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ | |
1393 | ||
78f81cc4 BD |
1394 | static int beep_read(char *p) |
1395 | { | |
1396 | int len = 0; | |
1397 | ||
1398 | if (!beep_handle) | |
1399 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1400 | else { | |
1401 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
1402 | len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n"); | |
1403 | } | |
1404 | ||
1405 | return len; | |
1406 | } | |
1407 | ||
1408 | static int beep_write(char *buf) | |
1409 | { | |
1410 | char *cmd; | |
1411 | int beep_cmd; | |
1412 | ||
1413 | if (!beep_handle) | |
1414 | return -ENODEV; | |
1415 | ||
1416 | while ((cmd = next_cmd(&buf))) { | |
1417 | if (sscanf(cmd, "%u", &beep_cmd) == 1 && | |
1418 | beep_cmd >= 0 && beep_cmd <= 17) { | |
1419 | /* beep_cmd set */ | |
1420 | } else | |
1421 | return -EINVAL; | |
1422 | if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0)) | |
1423 | return -EIO; | |
1424 | } | |
1425 | ||
1426 | return 0; | |
1427 | } | |
1428 | ||
56b6aeb0 HMH |
1429 | /************************************************************************* |
1430 | * Thermal subdriver | |
1431 | */ | |
78f81cc4 | 1432 | |
a26f878a | 1433 | static enum thermal_access_mode thermal_read_mode; |
78f81cc4 BD |
1434 | |
1435 | static int thermal_init(void) | |
1436 | { | |
60eb0b35 HMH |
1437 | u8 t, ta1, ta2; |
1438 | int i; | |
1439 | int acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); | |
1440 | ||
1441 | if (ibm_thinkpad_ec_found && experimental) { | |
1442 | /* | |
1443 | * Direct EC access mode: sensors at registers | |
1444 | * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for | |
1445 | * non-implemented, thermal sensors return 0x80 when | |
1446 | * not available | |
1447 | */ | |
78f81cc4 | 1448 | |
60eb0b35 HMH |
1449 | ta1 = ta2 = 0; |
1450 | for (i = 0; i < 8; i++) { | |
1451 | if (likely(acpi_ec_read(0x78 + i, &t))) { | |
1452 | ta1 |= t; | |
1453 | } else { | |
1454 | ta1 = 0; | |
1455 | break; | |
1456 | } | |
1457 | if (likely(acpi_ec_read(0xC0 + i, &t))) { | |
1458 | ta2 |= t; | |
1459 | } else { | |
1460 | ta1 = 0; | |
1461 | break; | |
1462 | } | |
1463 | } | |
1464 | if (ta1 == 0) { | |
1465 | /* This is sheer paranoia, but we handle it anyway */ | |
1466 | if (acpi_tmp7) { | |
1467 | printk(IBM_ERR | |
1468 | "ThinkPad ACPI EC access misbehaving, " | |
1469 | "falling back to ACPI TMPx access mode\n"); | |
1470 | thermal_read_mode = IBMACPI_THERMAL_ACPI_TMP07; | |
1471 | } else { | |
1472 | printk(IBM_ERR | |
1473 | "ThinkPad ACPI EC access misbehaving, " | |
1474 | "disabling thermal sensors access\n"); | |
1475 | thermal_read_mode = IBMACPI_THERMAL_NONE; | |
1476 | } | |
1477 | } else { | |
1478 | thermal_read_mode = | |
1479 | (ta2 != 0) ? | |
1480 | IBMACPI_THERMAL_TPEC_16 : IBMACPI_THERMAL_TPEC_8; | |
1481 | } | |
1482 | } else if (acpi_tmp7) { | |
a26f878a HMH |
1483 | if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { |
1484 | /* 600e/x, 770e, 770x */ | |
1485 | thermal_read_mode = IBMACPI_THERMAL_ACPI_UPDT; | |
1486 | } else { | |
1487 | /* Standard ACPI TMPx access, max 8 sensors */ | |
1488 | thermal_read_mode = IBMACPI_THERMAL_ACPI_TMP07; | |
1489 | } | |
1490 | } else { | |
1491 | /* temperatures not supported on 570, G4x, R30, R31, R32 */ | |
1492 | thermal_read_mode = IBMACPI_THERMAL_NONE; | |
1493 | } | |
78f81cc4 BD |
1494 | |
1495 | return 0; | |
1496 | } | |
1497 | ||
a26f878a | 1498 | static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) |
78f81cc4 | 1499 | { |
a26f878a | 1500 | int i, t; |
60eb0b35 | 1501 | s8 tmp; |
a26f878a | 1502 | char tmpi[] = "TMPi"; |
78f81cc4 | 1503 | |
a26f878a HMH |
1504 | if (!s) |
1505 | return -EINVAL; | |
78f81cc4 | 1506 | |
a26f878a | 1507 | switch (thermal_read_mode) { |
60eb0b35 HMH |
1508 | #if IBMACPI_MAX_THERMAL_SENSORS >= 16 |
1509 | case IBMACPI_THERMAL_TPEC_16: | |
1510 | for (i = 0; i < 8; i++) { | |
1511 | if (!acpi_ec_read(0xC0 + i, &tmp)) | |
1512 | return -EIO; | |
1513 | s->temp[i + 8] = tmp * 1000; | |
1514 | } | |
1515 | /* fallthrough */ | |
1516 | #endif | |
1517 | case IBMACPI_THERMAL_TPEC_8: | |
1518 | for (i = 0; i < 8; i++) { | |
1519 | if (!acpi_ec_read(0x78 + i, &tmp)) | |
78f81cc4 | 1520 | return -EIO; |
60eb0b35 HMH |
1521 | s->temp[i] = tmp * 1000; |
1522 | } | |
1523 | return (thermal_read_mode == IBMACPI_THERMAL_TPEC_16) ? 16 : 8; | |
78f81cc4 | 1524 | |
a26f878a HMH |
1525 | case IBMACPI_THERMAL_ACPI_UPDT: |
1526 | if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) | |
1527 | return -EIO; | |
78f81cc4 BD |
1528 | for (i = 0; i < 8; i++) { |
1529 | tmpi[3] = '0' + i; | |
1530 | if (!acpi_evalf(ec_handle, &t, tmpi, "d")) | |
1531 | return -EIO; | |
a26f878a | 1532 | s->temp[i] = (t - 2732) * 100; |
78f81cc4 | 1533 | } |
a26f878a | 1534 | return 8; |
78f81cc4 | 1535 | |
a26f878a | 1536 | case IBMACPI_THERMAL_ACPI_TMP07: |
78f81cc4 BD |
1537 | for (i = 0; i < 8; i++) { |
1538 | tmpi[3] = '0' + i; | |
1539 | if (!acpi_evalf(ec_handle, &t, tmpi, "d")) | |
1540 | return -EIO; | |
a26f878a | 1541 | s->temp[i] = t * 1000; |
78f81cc4 | 1542 | } |
a26f878a | 1543 | return 8; |
78f81cc4 | 1544 | |
a26f878a HMH |
1545 | case IBMACPI_THERMAL_NONE: |
1546 | default: | |
1547 | return 0; | |
78f81cc4 | 1548 | } |
a26f878a HMH |
1549 | } |
1550 | ||
1551 | static int thermal_read(char *p) | |
1552 | { | |
1553 | int len = 0; | |
1554 | int n, i; | |
1555 | struct ibm_thermal_sensors_struct t; | |
1556 | ||
1557 | n = thermal_get_sensors(&t); | |
1558 | if (unlikely(n < 0)) | |
1559 | return n; | |
1560 | ||
1561 | len += sprintf(p + len, "temperatures:\t"); | |
1562 | ||
1563 | if (n > 0) { | |
1564 | for (i = 0; i < (n - 1); i++) | |
1565 | len += sprintf(p + len, "%d ", t.temp[i] / 1000); | |
1566 | len += sprintf(p + len, "%d\n", t.temp[i] / 1000); | |
1567 | } else | |
1568 | len += sprintf(p + len, "not supported\n"); | |
78f81cc4 BD |
1569 | |
1570 | return len; | |
1571 | } | |
1572 | ||
56b6aeb0 HMH |
1573 | /************************************************************************* |
1574 | * EC Dump subdriver | |
1575 | */ | |
1576 | ||
78f81cc4 BD |
1577 | static u8 ecdump_regs[256]; |
1578 | ||
1579 | static int ecdump_read(char *p) | |
1580 | { | |
1581 | int len = 0; | |
1582 | int i, j; | |
1583 | u8 v; | |
1584 | ||
1585 | len += sprintf(p + len, "EC " | |
1586 | " +00 +01 +02 +03 +04 +05 +06 +07" | |
1587 | " +08 +09 +0a +0b +0c +0d +0e +0f\n"); | |
1588 | for (i = 0; i < 256; i += 16) { | |
1589 | len += sprintf(p + len, "EC 0x%02x:", i); | |
1590 | for (j = 0; j < 16; j++) { | |
1591 | if (!acpi_ec_read(i + j, &v)) | |
1592 | break; | |
1593 | if (v != ecdump_regs[i + j]) | |
1594 | len += sprintf(p + len, " *%02x", v); | |
1595 | else | |
1596 | len += sprintf(p + len, " %02x", v); | |
1597 | ecdump_regs[i + j] = v; | |
1598 | } | |
1599 | len += sprintf(p + len, "\n"); | |
1600 | if (j != 16) | |
1601 | break; | |
1602 | } | |
1603 | ||
1604 | /* These are way too dangerous to advertise openly... */ | |
1605 | #if 0 | |
1606 | len += sprintf(p + len, "commands:\t0x<offset> 0x<value>" | |
1607 | " (<offset> is 00-ff, <value> is 00-ff)\n"); | |
1608 | len += sprintf(p + len, "commands:\t0x<offset> <value> " | |
1609 | " (<offset> is 00-ff, <value> is 0-255)\n"); | |
1610 | #endif | |
1611 | return len; | |
1612 | } | |
1613 | ||
1614 | static int ecdump_write(char *buf) | |
1615 | { | |
1616 | char *cmd; | |
1617 | int i, v; | |
1618 | ||
1619 | while ((cmd = next_cmd(&buf))) { | |
1620 | if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) { | |
1621 | /* i and v set */ | |
1622 | } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) { | |
1623 | /* i and v set */ | |
1624 | } else | |
1625 | return -EINVAL; | |
1626 | if (i >= 0 && i < 256 && v >= 0 && v < 256) { | |
1627 | if (!acpi_ec_write(i, v)) | |
1da177e4 LT |
1628 | return -EIO; |
1629 | } else | |
1630 | return -EINVAL; | |
1631 | } | |
1632 | ||
1633 | return 0; | |
78f81cc4 BD |
1634 | } |
1635 | ||
56b6aeb0 HMH |
1636 | /************************************************************************* |
1637 | * Backlight/brightness subdriver | |
1638 | */ | |
1639 | ||
1640 | static struct backlight_device *ibm_backlight_device = NULL; | |
1641 | ||
1642 | static struct backlight_ops ibm_backlight_data = { | |
1643 | .get_brightness = brightness_get, | |
1644 | .update_status = brightness_update_status, | |
1645 | }; | |
1646 | ||
1647 | static int brightness_init(void) | |
1648 | { | |
1649 | int b; | |
1650 | ||
1651 | b = brightness_get(NULL); | |
1652 | if (b < 0) | |
1653 | return b; | |
1654 | ||
1655 | ibm_backlight_device = backlight_device_register("ibm", NULL, NULL, | |
1656 | &ibm_backlight_data); | |
1657 | if (IS_ERR(ibm_backlight_device)) { | |
1658 | printk(IBM_ERR "Could not register backlight device\n"); | |
1659 | return PTR_ERR(ibm_backlight_device); | |
1660 | } | |
1661 | ||
1662 | ibm_backlight_device->props.max_brightness = 7; | |
1663 | ibm_backlight_device->props.brightness = b; | |
1664 | backlight_update_status(ibm_backlight_device); | |
1665 | ||
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | static void brightness_exit(void) | |
1670 | { | |
1671 | if (ibm_backlight_device) { | |
1672 | backlight_device_unregister(ibm_backlight_device); | |
1673 | ibm_backlight_device = NULL; | |
1674 | } | |
1675 | } | |
1676 | ||
1677 | static int brightness_update_status(struct backlight_device *bd) | |
1678 | { | |
1679 | return brightness_set( | |
1680 | (bd->props.fb_blank == FB_BLANK_UNBLANK && | |
1681 | bd->props.power == FB_BLANK_UNBLANK) ? | |
1682 | bd->props.brightness : 0); | |
1683 | } | |
1684 | ||
8acb0250 HM |
1685 | static int brightness_get(struct backlight_device *bd) |
1686 | { | |
8d297264 HMH |
1687 | u8 level; |
1688 | if (!acpi_ec_read(brightness_offset, &level)) | |
1689 | return -EIO; | |
8acb0250 | 1690 | |
8d297264 | 1691 | level &= 0x7; |
fb87a811 | 1692 | |
8d297264 | 1693 | return level; |
8acb0250 HM |
1694 | } |
1695 | ||
8acb0250 | 1696 | static int brightness_set(int value) |
1da177e4 | 1697 | { |
78f81cc4 | 1698 | int cmos_cmd, inc, i; |
8acb0250 HM |
1699 | int current_value = brightness_get(NULL); |
1700 | ||
1701 | value &= 7; | |
1702 | ||
56b6aeb0 | 1703 | cmos_cmd = value > current_value ? TP_CMOS_BRIGHTNESS_UP : TP_CMOS_BRIGHTNESS_DOWN; |
8acb0250 HM |
1704 | inc = value > current_value ? 1 : -1; |
1705 | for (i = current_value; i != value; i += inc) { | |
1706 | if (!cmos_eval(cmos_cmd)) | |
1707 | return -EIO; | |
1708 | if (!acpi_ec_write(brightness_offset, i + inc)) | |
1709 | return -EIO; | |
1710 | } | |
1711 | ||
1712 | return 0; | |
1713 | } | |
1714 | ||
56b6aeb0 HMH |
1715 | static int brightness_read(char *p) |
1716 | { | |
1717 | int len = 0; | |
1718 | int level; | |
1719 | ||
1720 | if ((level = brightness_get(NULL)) < 0) { | |
1721 | len += sprintf(p + len, "level:\t\tunreadable\n"); | |
1722 | } else { | |
1723 | len += sprintf(p + len, "level:\t\t%d\n", level & 0x7); | |
1724 | len += sprintf(p + len, "commands:\tup, down\n"); | |
1725 | len += sprintf(p + len, "commands:\tlevel <level>" | |
1726 | " (<level> is 0-7)\n"); | |
1727 | } | |
1728 | ||
1729 | return len; | |
1730 | } | |
1731 | ||
8acb0250 HM |
1732 | static int brightness_write(char *buf) |
1733 | { | |
1734 | int level; | |
78f81cc4 | 1735 | int new_level; |
1da177e4 | 1736 | char *cmd; |
1da177e4 LT |
1737 | |
1738 | while ((cmd = next_cmd(&buf))) { | |
8acb0250 HM |
1739 | if ((level = brightness_get(NULL)) < 0) |
1740 | return level; | |
78f81cc4 BD |
1741 | level &= 7; |
1742 | ||
1743 | if (strlencmp(cmd, "up") == 0) { | |
1744 | new_level = level == 7 ? 7 : level + 1; | |
1745 | } else if (strlencmp(cmd, "down") == 0) { | |
1746 | new_level = level == 0 ? 0 : level - 1; | |
1747 | } else if (sscanf(cmd, "level %d", &new_level) == 1 && | |
1748 | new_level >= 0 && new_level <= 7) { | |
1749 | /* new_level set */ | |
1750 | } else | |
1751 | return -EINVAL; | |
1752 | ||
8acb0250 | 1753 | brightness_set(new_level); |
78f81cc4 BD |
1754 | } |
1755 | ||
1756 | return 0; | |
1757 | } | |
1758 | ||
56b6aeb0 HMH |
1759 | /************************************************************************* |
1760 | * Volume subdriver | |
1761 | */ | |
fb87a811 | 1762 | |
78f81cc4 BD |
1763 | static int volume_read(char *p) |
1764 | { | |
1765 | int len = 0; | |
1766 | u8 level; | |
1767 | ||
1768 | if (!acpi_ec_read(volume_offset, &level)) { | |
1769 | len += sprintf(p + len, "level:\t\tunreadable\n"); | |
1770 | } else { | |
1771 | len += sprintf(p + len, "level:\t\t%d\n", level & 0xf); | |
1772 | len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6)); | |
1773 | len += sprintf(p + len, "commands:\tup, down, mute\n"); | |
1774 | len += sprintf(p + len, "commands:\tlevel <level>" | |
1775 | " (<level> is 0-15)\n"); | |
1776 | } | |
1777 | ||
1778 | return len; | |
1779 | } | |
1780 | ||
78f81cc4 BD |
1781 | static int volume_write(char *buf) |
1782 | { | |
1783 | int cmos_cmd, inc, i; | |
1784 | u8 level, mute; | |
1785 | int new_level, new_mute; | |
1786 | char *cmd; | |
1787 | ||
1788 | while ((cmd = next_cmd(&buf))) { | |
1789 | if (!acpi_ec_read(volume_offset, &level)) | |
1790 | return -EIO; | |
1791 | new_mute = mute = level & 0x40; | |
1792 | new_level = level = level & 0xf; | |
1793 | ||
1794 | if (strlencmp(cmd, "up") == 0) { | |
1795 | if (mute) | |
1796 | new_mute = 0; | |
1797 | else | |
1798 | new_level = level == 15 ? 15 : level + 1; | |
1799 | } else if (strlencmp(cmd, "down") == 0) { | |
1800 | if (mute) | |
1801 | new_mute = 0; | |
1802 | else | |
1803 | new_level = level == 0 ? 0 : level - 1; | |
1804 | } else if (sscanf(cmd, "level %d", &new_level) == 1 && | |
1805 | new_level >= 0 && new_level <= 15) { | |
1806 | /* new_level set */ | |
1807 | } else if (strlencmp(cmd, "mute") == 0) { | |
1808 | new_mute = 0x40; | |
1da177e4 LT |
1809 | } else |
1810 | return -EINVAL; | |
1811 | ||
78f81cc4 | 1812 | if (new_level != level) { /* mute doesn't change */ |
56b6aeb0 | 1813 | cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN; |
78f81cc4 BD |
1814 | inc = new_level > level ? 1 : -1; |
1815 | ||
1816 | if (mute && (!cmos_eval(cmos_cmd) || | |
1817 | !acpi_ec_write(volume_offset, level))) | |
1818 | return -EIO; | |
1819 | ||
1820 | for (i = level; i != new_level; i += inc) | |
1821 | if (!cmos_eval(cmos_cmd) || | |
1822 | !acpi_ec_write(volume_offset, i + inc)) | |
1823 | return -EIO; | |
1824 | ||
e062e034 | 1825 | if (mute && (!cmos_eval(TP_CMOS_VOLUME_MUTE) || |
78f81cc4 BD |
1826 | !acpi_ec_write(volume_offset, |
1827 | new_level + mute))) | |
1828 | return -EIO; | |
1829 | } | |
1830 | ||
1831 | if (new_mute != mute) { /* level doesn't change */ | |
56b6aeb0 | 1832 | cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP; |
78f81cc4 BD |
1833 | |
1834 | if (!cmos_eval(cmos_cmd) || | |
1835 | !acpi_ec_write(volume_offset, level + new_mute)) | |
1836 | return -EIO; | |
1837 | } | |
1838 | } | |
1839 | ||
1840 | return 0; | |
1841 | } | |
1842 | ||
56b6aeb0 HMH |
1843 | |
1844 | /************************************************************************* | |
1845 | * Fan subdriver | |
1846 | */ | |
1847 | ||
1848 | /* | |
1849 | * FAN ACCESS MODES | |
1850 | * | |
1851 | * IBMACPI_FAN_RD_ACPI_GFAN: | |
1852 | * ACPI GFAN method: returns fan level | |
1853 | * | |
1854 | * see IBMACPI_FAN_WR_ACPI_SFAN | |
1855 | * EC 0x2f not available if GFAN exists | |
1856 | * | |
1857 | * IBMACPI_FAN_WR_ACPI_SFAN: | |
1858 | * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) | |
1859 | * | |
1860 | * EC 0x2f might be available *for reading*, but never for writing. | |
1861 | * | |
1862 | * IBMACPI_FAN_WR_TPEC: | |
1863 | * ThinkPad EC register 0x2f (HFSP): fan control loop mode Supported | |
1864 | * on almost all ThinkPads | |
1865 | * | |
1866 | * Fan speed changes of any sort (including those caused by the | |
1867 | * disengaged mode) are usually done slowly by the firmware as the | |
1868 | * maximum ammount of fan duty cycle change per second seems to be | |
1869 | * limited. | |
1870 | * | |
1871 | * Reading is not available if GFAN exists. | |
1872 | * Writing is not available if SFAN exists. | |
1873 | * | |
1874 | * Bits | |
1875 | * 7 automatic mode engaged; | |
1876 | * (default operation mode of the ThinkPad) | |
1877 | * fan level is ignored in this mode. | |
1878 | * 6 disengage mode (takes precedence over bit 7); | |
1879 | * not available on all thinkpads. May disable | |
1880 | * the tachometer, and speeds up fan to 100% duty-cycle, | |
1881 | * which speeds it up far above the standard RPM | |
1882 | * levels. It is not impossible that it could cause | |
1883 | * hardware damage. | |
1884 | * 5-3 unused in some models. Extra bits for fan level | |
1885 | * in others, but still useless as all values above | |
1886 | * 7 map to the same speed as level 7 in these models. | |
1887 | * 2-0 fan level (0..7 usually) | |
1888 | * 0x00 = stop | |
1889 | * 0x07 = max (set when temperatures critical) | |
1890 | * Some ThinkPads may have other levels, see | |
1891 | * IBMACPI_FAN_WR_ACPI_FANS (X31/X40/X41) | |
1892 | * | |
1893 | * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at | |
1894 | * boot. Apparently the EC does not intialize it, so unless ACPI DSDT | |
1895 | * does so, its initial value is meaningless (0x07). | |
1896 | * | |
1897 | * For firmware bugs, refer to: | |
1898 | * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues | |
1899 | * | |
1900 | * ---- | |
1901 | * | |
1902 | * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): | |
1903 | * Main fan tachometer reading (in RPM) | |
1904 | * | |
1905 | * This register is present on all ThinkPads with a new-style EC, and | |
1906 | * it is known not to be present on the A21m/e, and T22, as there is | |
1907 | * something else in offset 0x84 according to the ACPI DSDT. Other | |
1908 | * ThinkPads from this same time period (and earlier) probably lack the | |
1909 | * tachometer as well. | |
1910 | * | |
1911 | * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare | |
1912 | * was never fixed by IBM to report the EC firmware version string | |
1913 | * probably support the tachometer (like the early X models), so | |
1914 | * detecting it is quite hard. We need more data to know for sure. | |
1915 | * | |
1916 | * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings | |
1917 | * might result. | |
1918 | * | |
1919 | * FIRMWARE BUG: when EC 0x2f bit 6 is set (disengaged mode), this | |
1920 | * register is not invalidated in ThinkPads that disable tachometer | |
1921 | * readings. Thus, the tachometer readings go stale. | |
1922 | * | |
1923 | * For firmware bugs, refer to: | |
1924 | * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues | |
1925 | * | |
1926 | * IBMACPI_FAN_WR_ACPI_FANS: | |
1927 | * ThinkPad X31, X40, X41. Not available in the X60. | |
1928 | * | |
1929 | * FANS ACPI handle: takes three arguments: low speed, medium speed, | |
1930 | * high speed. ACPI DSDT seems to map these three speeds to levels | |
1931 | * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH | |
1932 | * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") | |
1933 | * | |
1934 | * The speeds are stored on handles | |
1935 | * (FANA:FAN9), (FANC:FANB), (FANE:FAND). | |
1936 | * | |
1937 | * There are three default speed sets, acessible as handles: | |
1938 | * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H | |
1939 | * | |
1940 | * ACPI DSDT switches which set is in use depending on various | |
1941 | * factors. | |
1942 | * | |
1943 | * IBMACPI_FAN_WR_TPEC is also available and should be used to | |
1944 | * command the fan. The X31/X40/X41 seems to have 8 fan levels, | |
1945 | * but the ACPI tables just mention level 7. | |
1946 | */ | |
1947 | ||
69ba91cb HMH |
1948 | static enum fan_status_access_mode fan_status_access_mode; |
1949 | static enum fan_control_access_mode fan_control_access_mode; | |
1950 | static enum fan_control_commands fan_control_commands; | |
78f81cc4 | 1951 | |
778b4d74 HMH |
1952 | static int fan_control_status_known; |
1953 | static u8 fan_control_initial_status; | |
1954 | ||
25c68a33 | 1955 | static void fan_watchdog_fire(struct work_struct *ignored); |
16663a87 | 1956 | static int fan_watchdog_maxinterval; |
25c68a33 | 1957 | static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); |
16663a87 | 1958 | |
56b6aeb0 HMH |
1959 | IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ |
1960 | IBM_HANDLE(gfan, ec, "GFAN", /* 570 */ | |
1961 | "\\FSPD", /* 600e/x, 770e, 770x */ | |
1962 | ); /* all others */ | |
1963 | IBM_HANDLE(sfan, ec, "SFAN", /* 570 */ | |
1964 | "JFNS", /* 770x-JL */ | |
1965 | ); /* all others */ | |
1966 | ||
69ba91cb | 1967 | static int fan_init(void) |
78f81cc4 | 1968 | { |
69ba91cb HMH |
1969 | fan_status_access_mode = IBMACPI_FAN_NONE; |
1970 | fan_control_access_mode = IBMACPI_FAN_WR_NONE; | |
1971 | fan_control_commands = 0; | |
778b4d74 | 1972 | fan_control_status_known = 1; |
16663a87 | 1973 | fan_watchdog_maxinterval = 0; |
78f81cc4 BD |
1974 | |
1975 | if (gfan_handle) { | |
1976 | /* 570, 600e/x, 770e, 770x */ | |
69ba91cb HMH |
1977 | fan_status_access_mode = IBMACPI_FAN_RD_ACPI_GFAN; |
1978 | } else { | |
1979 | /* all other ThinkPads: note that even old-style | |
1980 | * ThinkPad ECs supports the fan control register */ | |
778b4d74 HMH |
1981 | if (likely(acpi_ec_read(fan_status_offset, |
1982 | &fan_control_initial_status))) { | |
69ba91cb | 1983 | fan_status_access_mode = IBMACPI_FAN_RD_TPEC; |
778b4d74 HMH |
1984 | |
1985 | /* In some ThinkPads, neither the EC nor the ACPI | |
1986 | * DSDT initialize the fan status, and it ends up | |
1987 | * being set to 0x07 when it *could* be either | |
1988 | * 0x07 or 0x80. | |
1989 | * | |
1990 | * Enable for TP-1Y (T43), TP-78 (R51e), | |
1991 | * TP-76 (R52), TP-70 (T43, R52), which are known | |
1992 | * to be buggy. */ | |
1993 | if (fan_control_initial_status == 0x07 && | |
1994 | ibm_thinkpad_ec_found && | |
1995 | ((ibm_thinkpad_ec_found[0] == '1' && | |
1996 | ibm_thinkpad_ec_found[1] == 'Y') || | |
1997 | (ibm_thinkpad_ec_found[0] == '7' && | |
1998 | (ibm_thinkpad_ec_found[1] == '6' || | |
1999 | ibm_thinkpad_ec_found[1] == '8' || | |
2000 | ibm_thinkpad_ec_found[1] == '0')) | |
2001 | )) { | |
2002 | printk(IBM_NOTICE | |
2003 | "fan_init: initial fan status is " | |
2004 | "unknown, assuming it is in auto " | |
2005 | "mode\n"); | |
2006 | fan_control_status_known = 0; | |
2007 | } | |
69ba91cb HMH |
2008 | } else { |
2009 | printk(IBM_ERR | |
2010 | "ThinkPad ACPI EC access misbehaving, " | |
2011 | "fan status and control unavailable\n"); | |
2012 | return 0; | |
2013 | } | |
2014 | } | |
78f81cc4 | 2015 | |
69ba91cb HMH |
2016 | if (sfan_handle) { |
2017 | /* 570, 770x-JL */ | |
2018 | fan_control_access_mode = IBMACPI_FAN_WR_ACPI_SFAN; | |
1c6a334e HMH |
2019 | fan_control_commands |= |
2020 | IBMACPI_FAN_CMD_LEVEL | IBMACPI_FAN_CMD_ENABLE; | |
78f81cc4 | 2021 | } else { |
69ba91cb HMH |
2022 | if (!gfan_handle) { |
2023 | /* gfan without sfan means no fan control */ | |
2024 | /* all other models implement TP EC 0x2f control */ | |
2025 | ||
2026 | if (fans_handle) { | |
a8b7a662 | 2027 | /* X31, X40, X41 */ |
69ba91cb HMH |
2028 | fan_control_access_mode = |
2029 | IBMACPI_FAN_WR_ACPI_FANS; | |
2030 | fan_control_commands |= | |
2031 | IBMACPI_FAN_CMD_SPEED | | |
a12095c2 | 2032 | IBMACPI_FAN_CMD_LEVEL | |
69ba91cb HMH |
2033 | IBMACPI_FAN_CMD_ENABLE; |
2034 | } else { | |
2035 | fan_control_access_mode = IBMACPI_FAN_WR_TPEC; | |
a12095c2 HMH |
2036 | fan_control_commands |= |
2037 | IBMACPI_FAN_CMD_LEVEL | | |
2038 | IBMACPI_FAN_CMD_ENABLE; | |
69ba91cb HMH |
2039 | } |
2040 | } | |
2041 | } | |
2042 | ||
2043 | return 0; | |
2044 | } | |
78f81cc4 | 2045 | |
c52f0aa5 | 2046 | static int fan_get_status(u8 *status) |
78f81cc4 | 2047 | { |
c52f0aa5 | 2048 | u8 s; |
78f81cc4 | 2049 | |
a8b7a662 HMH |
2050 | /* TODO: |
2051 | * Add IBMACPI_FAN_RD_ACPI_FANS ? */ | |
2052 | ||
3ef8a609 HMH |
2053 | switch (fan_status_access_mode) { |
2054 | case IBMACPI_FAN_RD_ACPI_GFAN: | |
78f81cc4 | 2055 | /* 570, 600e/x, 770e, 770x */ |
c52f0aa5 HMH |
2056 | |
2057 | if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d"))) | |
1da177e4 | 2058 | return -EIO; |
78f81cc4 | 2059 | |
c52f0aa5 HMH |
2060 | if (likely(status)) |
2061 | *status = s & 0x07; | |
3ef8a609 HMH |
2062 | |
2063 | break; | |
2064 | ||
2065 | case IBMACPI_FAN_RD_TPEC: | |
78f81cc4 | 2066 | /* all except 570, 600e/x, 770e, 770x */ |
c52f0aa5 | 2067 | if (unlikely(!acpi_ec_read(fan_status_offset, &s))) |
3ef8a609 | 2068 | return -EIO; |
78f81cc4 | 2069 | |
c52f0aa5 HMH |
2070 | if (likely(status)) |
2071 | *status = s; | |
2072 | ||
2073 | break; | |
2074 | ||
2075 | default: | |
2076 | return -ENXIO; | |
78f81cc4 BD |
2077 | } |
2078 | ||
c52f0aa5 HMH |
2079 | return 0; |
2080 | } | |
2081 | ||
56b6aeb0 HMH |
2082 | static void fan_exit(void) |
2083 | { | |
2084 | cancel_delayed_work(&fan_watchdog_task); | |
2085 | flush_scheduled_work(); | |
2086 | } | |
2087 | ||
c52f0aa5 HMH |
2088 | static int fan_get_speed(unsigned int *speed) |
2089 | { | |
2090 | u8 hi, lo; | |
2091 | ||
2092 | switch (fan_status_access_mode) { | |
2093 | case IBMACPI_FAN_RD_TPEC: | |
78f81cc4 | 2094 | /* all except 570, 600e/x, 770e, 770x */ |
3ef8a609 HMH |
2095 | if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || |
2096 | !acpi_ec_read(fan_rpm_offset + 1, &hi))) | |
2097 | return -EIO; | |
3ef8a609 | 2098 | |
c52f0aa5 HMH |
2099 | if (likely(speed)) |
2100 | *speed = (hi << 8) | lo; | |
2101 | ||
2102 | break; | |
2103 | ||
2104 | default: | |
2105 | return -ENXIO; | |
2106 | } | |
2107 | ||
2108 | return 0; | |
2109 | } | |
2110 | ||
56b6aeb0 | 2111 | static void fan_watchdog_fire(struct work_struct *ignored) |
16663a87 | 2112 | { |
56b6aeb0 HMH |
2113 | printk(IBM_NOTICE "fan watchdog: enabling fan\n"); |
2114 | if (fan_set_enable()) { | |
2115 | printk(IBM_ERR "fan watchdog: error while enabling fan\n"); | |
2116 | /* reschedule for later */ | |
2117 | fan_watchdog_reset(); | |
2118 | } | |
16663a87 HMH |
2119 | } |
2120 | ||
2121 | static void fan_watchdog_reset(void) | |
2122 | { | |
2123 | static int fan_watchdog_active = 0; | |
2124 | ||
2125 | if (fan_watchdog_active) | |
2126 | cancel_delayed_work(&fan_watchdog_task); | |
2127 | ||
2128 | if (fan_watchdog_maxinterval > 0) { | |
2129 | fan_watchdog_active = 1; | |
2130 | if (!schedule_delayed_work(&fan_watchdog_task, | |
2131 | msecs_to_jiffies(fan_watchdog_maxinterval | |
2132 | * 1000))) { | |
2133 | printk(IBM_ERR "failed to schedule the fan watchdog, " | |
2134 | "watchdog will not trigger\n"); | |
2135 | } | |
2136 | } else | |
2137 | fan_watchdog_active = 0; | |
2138 | } | |
2139 | ||
18ad7996 | 2140 | static int fan_set_level(int level) |
78f81cc4 | 2141 | { |
18ad7996 HMH |
2142 | switch (fan_control_access_mode) { |
2143 | case IBMACPI_FAN_WR_ACPI_SFAN: | |
2144 | if (level >= 0 && level <= 7) { | |
78f81cc4 BD |
2145 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) |
2146 | return -EIO; | |
18ad7996 HMH |
2147 | } else |
2148 | return -EINVAL; | |
2149 | break; | |
2150 | ||
a12095c2 HMH |
2151 | case IBMACPI_FAN_WR_ACPI_FANS: |
2152 | case IBMACPI_FAN_WR_TPEC: | |
2153 | if ((level != IBMACPI_FAN_EC_AUTO) && | |
2154 | (level != IBMACPI_FAN_EC_DISENGAGED) && | |
2155 | ((level < 0) || (level > 7))) | |
2156 | return -EINVAL; | |
2157 | ||
2158 | if (!acpi_ec_write(fan_status_offset, level)) | |
2159 | return -EIO; | |
778b4d74 HMH |
2160 | else |
2161 | fan_control_status_known = 1; | |
a12095c2 HMH |
2162 | break; |
2163 | ||
18ad7996 HMH |
2164 | default: |
2165 | return -ENXIO; | |
2166 | } | |
2167 | return 0; | |
2168 | } | |
2169 | ||
2170 | static int fan_set_enable(void) | |
2171 | { | |
1c6a334e HMH |
2172 | u8 s; |
2173 | int rc; | |
2174 | ||
18ad7996 HMH |
2175 | switch (fan_control_access_mode) { |
2176 | case IBMACPI_FAN_WR_ACPI_FANS: | |
2177 | case IBMACPI_FAN_WR_TPEC: | |
1c6a334e HMH |
2178 | if ((rc = fan_get_status(&s)) < 0) |
2179 | return rc; | |
2180 | ||
2181 | /* Don't go out of emergency fan mode */ | |
2182 | if (s != 7) | |
2183 | s = IBMACPI_FAN_EC_AUTO; | |
2184 | ||
2185 | if (!acpi_ec_write(fan_status_offset, s)) | |
2186 | return -EIO; | |
778b4d74 HMH |
2187 | else |
2188 | fan_control_status_known = 1; | |
1c6a334e HMH |
2189 | break; |
2190 | ||
2191 | case IBMACPI_FAN_WR_ACPI_SFAN: | |
2192 | if ((rc = fan_get_status(&s)) < 0) | |
2193 | return rc; | |
2194 | ||
2195 | s &= 0x07; | |
2196 | ||
2197 | /* Set fan to at least level 4 */ | |
2198 | if (s < 4) | |
2199 | s = 4; | |
2200 | ||
2201 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) | |
18ad7996 HMH |
2202 | return -EIO; |
2203 | break; | |
2204 | ||
2205 | default: | |
2206 | return -ENXIO; | |
2207 | } | |
2208 | return 0; | |
2209 | } | |
2210 | ||
2211 | static int fan_set_disable(void) | |
2212 | { | |
2213 | switch (fan_control_access_mode) { | |
2214 | case IBMACPI_FAN_WR_ACPI_FANS: | |
2215 | case IBMACPI_FAN_WR_TPEC: | |
2216 | if (!acpi_ec_write(fan_status_offset, 0x00)) | |
2217 | return -EIO; | |
778b4d74 HMH |
2218 | else |
2219 | fan_control_status_known = 1; | |
18ad7996 HMH |
2220 | break; |
2221 | ||
1c6a334e HMH |
2222 | case IBMACPI_FAN_WR_ACPI_SFAN: |
2223 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) | |
2224 | return -EIO; | |
2225 | break; | |
2226 | ||
18ad7996 HMH |
2227 | default: |
2228 | return -ENXIO; | |
2229 | } | |
56b6aeb0 HMH |
2230 | return 0; |
2231 | } | |
2232 | ||
2233 | static int fan_set_speed(int speed) | |
2234 | { | |
2235 | switch (fan_control_access_mode) { | |
2236 | case IBMACPI_FAN_WR_ACPI_FANS: | |
2237 | if (speed >= 0 && speed <= 65535) { | |
2238 | if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", | |
2239 | speed, speed, speed)) | |
2240 | return -EIO; | |
2241 | } else | |
2242 | return -EINVAL; | |
2243 | break; | |
2244 | ||
2245 | default: | |
2246 | return -ENXIO; | |
2247 | } | |
2248 | return 0; | |
2249 | } | |
2250 | ||
2251 | static int fan_read(char *p) | |
2252 | { | |
2253 | int len = 0; | |
2254 | int rc; | |
2255 | u8 status; | |
2256 | unsigned int speed = 0; | |
2257 | ||
2258 | switch (fan_status_access_mode) { | |
2259 | case IBMACPI_FAN_RD_ACPI_GFAN: | |
2260 | /* 570, 600e/x, 770e, 770x */ | |
2261 | if ((rc = fan_get_status(&status)) < 0) | |
2262 | return rc; | |
2263 | ||
2264 | len += sprintf(p + len, "status:\t\t%s\n" | |
2265 | "level:\t\t%d\n", | |
2266 | (status != 0) ? "enabled" : "disabled", status); | |
2267 | break; | |
2268 | ||
2269 | case IBMACPI_FAN_RD_TPEC: | |
2270 | /* all except 570, 600e/x, 770e, 770x */ | |
2271 | if ((rc = fan_get_status(&status)) < 0) | |
2272 | return rc; | |
2273 | ||
2274 | if (unlikely(!fan_control_status_known)) { | |
2275 | if (status != fan_control_initial_status) | |
2276 | fan_control_status_known = 1; | |
2277 | else | |
2278 | /* Return most likely status. In fact, it | |
2279 | * might be the only possible status */ | |
2280 | status = IBMACPI_FAN_EC_AUTO; | |
2281 | } | |
2282 | ||
2283 | len += sprintf(p + len, "status:\t\t%s\n", | |
2284 | (status != 0) ? "enabled" : "disabled"); | |
2285 | ||
2286 | /* No ThinkPad boots on disengaged mode, we can safely | |
2287 | * assume the tachometer is online if fan control status | |
2288 | * was unknown */ | |
2289 | if ((rc = fan_get_speed(&speed)) < 0) | |
2290 | return rc; | |
2291 | ||
2292 | len += sprintf(p + len, "speed:\t\t%d\n", speed); | |
2293 | ||
2294 | if (status & IBMACPI_FAN_EC_DISENGAGED) | |
2295 | /* Disengaged mode takes precedence */ | |
2296 | len += sprintf(p + len, "level:\t\tdisengaged\n"); | |
2297 | else if (status & IBMACPI_FAN_EC_AUTO) | |
2298 | len += sprintf(p + len, "level:\t\tauto\n"); | |
2299 | else | |
2300 | len += sprintf(p + len, "level:\t\t%d\n", status); | |
2301 | break; | |
2302 | ||
2303 | case IBMACPI_FAN_NONE: | |
2304 | default: | |
2305 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
2306 | } | |
2307 | ||
2308 | if (fan_control_commands & IBMACPI_FAN_CMD_LEVEL) { | |
2309 | len += sprintf(p + len, "commands:\tlevel <level>"); | |
2310 | ||
2311 | switch (fan_control_access_mode) { | |
2312 | case IBMACPI_FAN_WR_ACPI_SFAN: | |
2313 | len += sprintf(p + len, " (<level> is 0-7)\n"); | |
2314 | break; | |
2315 | ||
2316 | default: | |
2317 | len += sprintf(p + len, " (<level> is 0-7, " | |
2318 | "auto, disengaged)\n"); | |
2319 | break; | |
2320 | } | |
2321 | } | |
18ad7996 | 2322 | |
56b6aeb0 HMH |
2323 | if (fan_control_commands & IBMACPI_FAN_CMD_ENABLE) |
2324 | len += sprintf(p + len, "commands:\tenable, disable\n" | |
2325 | "commands:\twatchdog <timeout> (<timeout> is 0 (off), " | |
2326 | "1-120 (seconds))\n"); | |
1da177e4 | 2327 | |
56b6aeb0 HMH |
2328 | if (fan_control_commands & IBMACPI_FAN_CMD_SPEED) |
2329 | len += sprintf(p + len, "commands:\tspeed <speed>" | |
2330 | " (<speed> is 0-65535)\n"); | |
2331 | ||
2332 | return len; | |
78f81cc4 BD |
2333 | } |
2334 | ||
18ad7996 HMH |
2335 | static int fan_write_cmd_level(const char *cmd, int *rc) |
2336 | { | |
2337 | int level; | |
2338 | ||
a12095c2 HMH |
2339 | if (strlencmp(cmd, "level auto") == 0) |
2340 | level = IBMACPI_FAN_EC_AUTO; | |
2341 | else if (strlencmp(cmd, "level disengaged") == 0) | |
2342 | level = IBMACPI_FAN_EC_DISENGAGED; | |
2343 | else if (sscanf(cmd, "level %d", &level) != 1) | |
18ad7996 HMH |
2344 | return 0; |
2345 | ||
2346 | if ((*rc = fan_set_level(level)) == -ENXIO) | |
2347 | printk(IBM_ERR "level command accepted for unsupported " | |
2348 | "access mode %d", fan_control_access_mode); | |
2349 | ||
2350 | return 1; | |
2351 | } | |
2352 | ||
2353 | static int fan_write_cmd_enable(const char *cmd, int *rc) | |
2354 | { | |
2355 | if (strlencmp(cmd, "enable") != 0) | |
2356 | return 0; | |
2357 | ||
2358 | if ((*rc = fan_set_enable()) == -ENXIO) | |
2359 | printk(IBM_ERR "enable command accepted for unsupported " | |
2360 | "access mode %d", fan_control_access_mode); | |
2361 | ||
2362 | return 1; | |
2363 | } | |
2364 | ||
2365 | static int fan_write_cmd_disable(const char *cmd, int *rc) | |
2366 | { | |
2367 | if (strlencmp(cmd, "disable") != 0) | |
2368 | return 0; | |
2369 | ||
2370 | if ((*rc = fan_set_disable()) == -ENXIO) | |
2371 | printk(IBM_ERR "disable command accepted for unsupported " | |
2372 | "access mode %d", fan_control_access_mode); | |
2373 | ||
2374 | return 1; | |
2375 | } | |
2376 | ||
2377 | static int fan_write_cmd_speed(const char *cmd, int *rc) | |
2378 | { | |
2379 | int speed; | |
2380 | ||
a8b7a662 HMH |
2381 | /* TODO: |
2382 | * Support speed <low> <medium> <high> ? */ | |
2383 | ||
18ad7996 HMH |
2384 | if (sscanf(cmd, "speed %d", &speed) != 1) |
2385 | return 0; | |
2386 | ||
2387 | if ((*rc = fan_set_speed(speed)) == -ENXIO) | |
2388 | printk(IBM_ERR "speed command accepted for unsupported " | |
2389 | "access mode %d", fan_control_access_mode); | |
2390 | ||
2391 | return 1; | |
2392 | } | |
2393 | ||
16663a87 HMH |
2394 | static int fan_write_cmd_watchdog(const char *cmd, int *rc) |
2395 | { | |
2396 | int interval; | |
2397 | ||
2398 | if (sscanf(cmd, "watchdog %d", &interval) != 1) | |
2399 | return 0; | |
2400 | ||
2401 | if (interval < 0 || interval > 120) | |
2402 | *rc = -EINVAL; | |
2403 | else | |
2404 | fan_watchdog_maxinterval = interval; | |
2405 | ||
2406 | return 1; | |
2407 | } | |
2408 | ||
18ad7996 HMH |
2409 | static int fan_write(char *buf) |
2410 | { | |
2411 | char *cmd; | |
2412 | int rc = 0; | |
2413 | ||
2414 | while (!rc && (cmd = next_cmd(&buf))) { | |
2415 | if (!((fan_control_commands & IBMACPI_FAN_CMD_LEVEL) && | |
2416 | fan_write_cmd_level(cmd, &rc)) && | |
2417 | !((fan_control_commands & IBMACPI_FAN_CMD_ENABLE) && | |
2418 | (fan_write_cmd_enable(cmd, &rc) || | |
16663a87 HMH |
2419 | fan_write_cmd_disable(cmd, &rc) || |
2420 | fan_write_cmd_watchdog(cmd, &rc))) && | |
18ad7996 HMH |
2421 | !((fan_control_commands & IBMACPI_FAN_CMD_SPEED) && |
2422 | fan_write_cmd_speed(cmd, &rc)) | |
2423 | ) | |
2424 | rc = -EINVAL; | |
16663a87 HMH |
2425 | else if (!rc) |
2426 | fan_watchdog_reset(); | |
18ad7996 HMH |
2427 | } |
2428 | ||
2429 | return rc; | |
2430 | } | |
2431 | ||
56b6aeb0 HMH |
2432 | /**************************************************************************** |
2433 | **************************************************************************** | |
2434 | * | |
2435 | * Infrastructure | |
2436 | * | |
2437 | **************************************************************************** | |
2438 | ****************************************************************************/ | |
2439 | ||
2440 | /* /proc support */ | |
2441 | static struct proc_dir_entry *proc_dir = NULL; | |
16663a87 | 2442 | |
56b6aeb0 | 2443 | /* Subdriver registry */ |
1da177e4 LT |
2444 | static struct ibm_struct ibms[] = { |
2445 | { | |
78f81cc4 | 2446 | .name = "driver", |
643f12db HMH |
2447 | .init = thinkpad_acpi_driver_init, |
2448 | .read = thinkpad_acpi_driver_read, | |
78f81cc4 BD |
2449 | }, |
2450 | { | |
2451 | .name = "hotkey", | |
2452 | .hid = IBM_HKEY_HID, | |
2453 | .init = hotkey_init, | |
2454 | .read = hotkey_read, | |
2455 | .write = hotkey_write, | |
2456 | .exit = hotkey_exit, | |
2457 | .notify = hotkey_notify, | |
2458 | .handle = &hkey_handle, | |
2459 | .type = ACPI_DEVICE_NOTIFY, | |
2460 | }, | |
2461 | { | |
2462 | .name = "bluetooth", | |
2463 | .init = bluetooth_init, | |
2464 | .read = bluetooth_read, | |
2465 | .write = bluetooth_write, | |
2466 | }, | |
42adb53c JF |
2467 | { |
2468 | .name = "wan", | |
2469 | .init = wan_init, | |
2470 | .read = wan_read, | |
2471 | .write = wan_write, | |
2472 | .experimental = 1, | |
2473 | }, | |
78f81cc4 BD |
2474 | { |
2475 | .name = "video", | |
2476 | .init = video_init, | |
2477 | .read = video_read, | |
2478 | .write = video_write, | |
2479 | .exit = video_exit, | |
2480 | }, | |
1da177e4 | 2481 | { |
78f81cc4 BD |
2482 | .name = "light", |
2483 | .init = light_init, | |
2484 | .read = light_read, | |
2485 | .write = light_write, | |
2486 | }, | |
85998248 | 2487 | #ifdef CONFIG_THINKPAD_ACPI_DOCK |
1da177e4 | 2488 | { |
78f81cc4 BD |
2489 | .name = "dock", |
2490 | .read = dock_read, | |
2491 | .write = dock_write, | |
2492 | .notify = dock_notify, | |
2493 | .handle = &dock_handle, | |
2494 | .type = ACPI_SYSTEM_NOTIFY, | |
2495 | }, | |
1da177e4 | 2496 | { |
78f81cc4 BD |
2497 | .name = "dock", |
2498 | .hid = IBM_PCI_HID, | |
2499 | .notify = dock_notify, | |
2500 | .handle = &pci_handle, | |
2501 | .type = ACPI_SYSTEM_NOTIFY, | |
2502 | }, | |
63e5f248 | 2503 | #endif |
85998248 | 2504 | #ifdef CONFIG_THINKPAD_ACPI_BAY |
1da177e4 | 2505 | { |
78f81cc4 BD |
2506 | .name = "bay", |
2507 | .init = bay_init, | |
2508 | .read = bay_read, | |
2509 | .write = bay_write, | |
2510 | .notify = bay_notify, | |
2511 | .handle = &bay_handle, | |
2512 | .type = ACPI_SYSTEM_NOTIFY, | |
2513 | }, | |
85998248 | 2514 | #endif /* CONFIG_THINKPAD_ACPI_BAY */ |
1da177e4 | 2515 | { |
78f81cc4 BD |
2516 | .name = "cmos", |
2517 | .read = cmos_read, | |
2518 | .write = cmos_write, | |
2519 | }, | |
1da177e4 | 2520 | { |
78f81cc4 BD |
2521 | .name = "led", |
2522 | .init = led_init, | |
2523 | .read = led_read, | |
2524 | .write = led_write, | |
2525 | }, | |
1da177e4 | 2526 | { |
78f81cc4 BD |
2527 | .name = "beep", |
2528 | .read = beep_read, | |
2529 | .write = beep_write, | |
2530 | }, | |
1da177e4 | 2531 | { |
78f81cc4 BD |
2532 | .name = "thermal", |
2533 | .init = thermal_init, | |
2534 | .read = thermal_read, | |
2535 | }, | |
1da177e4 | 2536 | { |
78f81cc4 BD |
2537 | .name = "ecdump", |
2538 | .read = ecdump_read, | |
2539 | .write = ecdump_write, | |
2540 | .experimental = 1, | |
2541 | }, | |
2542 | { | |
2543 | .name = "brightness", | |
2544 | .read = brightness_read, | |
2545 | .write = brightness_write, | |
fb87a811 HMH |
2546 | .init = brightness_init, |
2547 | .exit = brightness_exit, | |
78f81cc4 BD |
2548 | }, |
2549 | { | |
2550 | .name = "volume", | |
2551 | .read = volume_read, | |
2552 | .write = volume_write, | |
78f81cc4 BD |
2553 | }, |
2554 | { | |
2555 | .name = "fan", | |
2556 | .read = fan_read, | |
2557 | .write = fan_write, | |
69ba91cb | 2558 | .init = fan_init, |
16663a87 | 2559 | .exit = fan_exit, |
78f81cc4 BD |
2560 | .experimental = 1, |
2561 | }, | |
1da177e4 | 2562 | }; |
1da177e4 | 2563 | |
56b6aeb0 HMH |
2564 | /* |
2565 | * Module and infrastructure proble, init and exit handling | |
2566 | */ | |
1da177e4 | 2567 | |
78f81cc4 | 2568 | static int __init ibm_init(struct ibm_struct *ibm) |
1da177e4 LT |
2569 | { |
2570 | int ret; | |
2571 | struct proc_dir_entry *entry; | |
2572 | ||
2573 | if (ibm->experimental && !experimental) | |
2574 | return 0; | |
2575 | ||
2576 | if (ibm->hid) { | |
e062e034 | 2577 | ret = register_ibmacpi_subdriver(ibm); |
1da177e4 LT |
2578 | if (ret < 0) |
2579 | return ret; | |
2580 | ibm->driver_registered = 1; | |
2581 | } | |
2582 | ||
2583 | if (ibm->init) { | |
78f81cc4 | 2584 | ret = ibm->init(); |
1da177e4 LT |
2585 | if (ret != 0) |
2586 | return ret; | |
2587 | ibm->init_called = 1; | |
2588 | } | |
2589 | ||
78f81cc4 BD |
2590 | if (ibm->read) { |
2591 | entry = create_proc_entry(ibm->name, | |
2592 | S_IFREG | S_IRUGO | S_IWUSR, | |
2593 | proc_dir); | |
2594 | if (!entry) { | |
2595 | printk(IBM_ERR "unable to create proc entry %s\n", | |
2596 | ibm->name); | |
2597 | return -ENODEV; | |
2598 | } | |
2599 | entry->owner = THIS_MODULE; | |
2600 | entry->data = ibm; | |
1da177e4 | 2601 | entry->read_proc = &dispatch_read; |
78f81cc4 BD |
2602 | if (ibm->write) |
2603 | entry->write_proc = &dispatch_write; | |
2604 | ibm->proc_created = 1; | |
2605 | } | |
1da177e4 LT |
2606 | |
2607 | if (ibm->notify) { | |
2608 | ret = setup_notify(ibm); | |
96e89afe HMH |
2609 | if (ret == -ENODEV) { |
2610 | printk(IBM_NOTICE "disabling subdriver %s\n", | |
2611 | ibm->name); | |
2612 | ibm_exit(ibm); | |
2613 | return 0; | |
2614 | } | |
1da177e4 LT |
2615 | if (ret < 0) |
2616 | return ret; | |
2617 | } | |
2618 | ||
2619 | return 0; | |
2620 | } | |
2621 | ||
2622 | static void ibm_exit(struct ibm_struct *ibm) | |
2623 | { | |
2624 | if (ibm->notify_installed) | |
2625 | acpi_remove_notify_handler(*ibm->handle, ibm->type, | |
2626 | dispatch_notify); | |
2627 | ||
2628 | if (ibm->proc_created) | |
2629 | remove_proc_entry(ibm->name, proc_dir); | |
2630 | ||
2631 | if (ibm->init_called && ibm->exit) | |
78f81cc4 | 2632 | ibm->exit(); |
1da177e4 LT |
2633 | |
2634 | if (ibm->driver_registered) { | |
2635 | acpi_bus_unregister_driver(ibm->driver); | |
2636 | kfree(ibm->driver); | |
2637 | } | |
2638 | } | |
2639 | ||
56b6aeb0 HMH |
2640 | /* Probing */ |
2641 | ||
2642 | static char *ibm_thinkpad_ec_found = NULL; | |
2643 | ||
2644 | static char* __init check_dmi_for_ec(void) | |
1da177e4 | 2645 | { |
56b6aeb0 HMH |
2646 | struct dmi_device *dev = NULL; |
2647 | char ec_fw_string[18]; | |
1da177e4 | 2648 | |
56b6aeb0 HMH |
2649 | /* |
2650 | * ThinkPad T23 or newer, A31 or newer, R50e or newer, | |
2651 | * X32 or newer, all Z series; Some models must have an | |
2652 | * up-to-date BIOS or they will not be detected. | |
2653 | * | |
2654 | * See http://thinkwiki.org/wiki/List_of_DMI_IDs | |
2655 | */ | |
2656 | while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { | |
2657 | if (sscanf(dev->name, | |
2658 | "IBM ThinkPad Embedded Controller -[%17c", | |
2659 | ec_fw_string) == 1) { | |
2660 | ec_fw_string[sizeof(ec_fw_string) - 1] = 0; | |
2661 | ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; | |
2662 | return kstrdup(ec_fw_string, GFP_KERNEL); | |
78f81cc4 | 2663 | } |
1da177e4 | 2664 | } |
56b6aeb0 | 2665 | return NULL; |
1da177e4 LT |
2666 | } |
2667 | ||
56b6aeb0 | 2668 | /* Module init, exit, parameters */ |
1da177e4 | 2669 | |
3945ac36 | 2670 | static int __init set_ibm_param(const char *val, struct kernel_param *kp) |
1da177e4 LT |
2671 | { |
2672 | unsigned int i; | |
1da177e4 | 2673 | |
78f81cc4 BD |
2674 | for (i = 0; i < ARRAY_SIZE(ibms); i++) |
2675 | if (strcmp(ibms[i].name, kp->name) == 0 && ibms[i].write) { | |
2676 | if (strlen(val) > sizeof(ibms[i].param) - 2) | |
2677 | return -ENOSPC; | |
2678 | strcpy(ibms[i].param, val); | |
2679 | strcat(ibms[i].param, ","); | |
2680 | return 0; | |
2681 | } | |
1da177e4 | 2682 | |
1da177e4 LT |
2683 | return -EINVAL; |
2684 | } | |
2685 | ||
56b6aeb0 HMH |
2686 | static int experimental; |
2687 | module_param(experimental, int, 0); | |
2688 | ||
1da177e4 LT |
2689 | #define IBM_PARAM(feature) \ |
2690 | module_param_call(feature, set_ibm_param, NULL, NULL, 0) | |
2691 | ||
78f81cc4 BD |
2692 | IBM_PARAM(hotkey); |
2693 | IBM_PARAM(bluetooth); | |
2694 | IBM_PARAM(video); | |
2695 | IBM_PARAM(light); | |
85998248 | 2696 | #ifdef CONFIG_THINKPAD_ACPI_DOCK |
78f81cc4 | 2697 | IBM_PARAM(dock); |
63e5f248 | 2698 | #endif |
85998248 | 2699 | #ifdef CONFIG_THINKPAD_ACPI_BAY |
78f81cc4 | 2700 | IBM_PARAM(bay); |
85998248 | 2701 | #endif /* CONFIG_THINKPAD_ACPI_BAY */ |
78f81cc4 BD |
2702 | IBM_PARAM(cmos); |
2703 | IBM_PARAM(led); | |
2704 | IBM_PARAM(beep); | |
2705 | IBM_PARAM(ecdump); | |
2706 | IBM_PARAM(brightness); | |
2707 | IBM_PARAM(volume); | |
2708 | IBM_PARAM(fan); | |
2709 | ||
1da177e4 LT |
2710 | static int __init acpi_ibm_init(void) |
2711 | { | |
2712 | int ret, i; | |
2713 | ||
2714 | if (acpi_disabled) | |
2715 | return -ENODEV; | |
2716 | ||
78f81cc4 BD |
2717 | /* ec is required because many other handles are relative to it */ |
2718 | IBM_HANDLE_INIT(ec); | |
2719 | if (!ec_handle) { | |
2720 | printk(IBM_ERR "ec object not found\n"); | |
1da177e4 | 2721 | return -ENODEV; |
78f81cc4 | 2722 | } |
1da177e4 | 2723 | |
60eb0b35 HMH |
2724 | /* Models with newer firmware report the EC in DMI */ |
2725 | ibm_thinkpad_ec_found = check_dmi_for_ec(); | |
2726 | ||
1da177e4 | 2727 | /* these handles are not required */ |
78f81cc4 BD |
2728 | IBM_HANDLE_INIT(vid); |
2729 | IBM_HANDLE_INIT(vid2); | |
2730 | IBM_HANDLE_INIT(ledb); | |
2731 | IBM_HANDLE_INIT(led); | |
2732 | IBM_HANDLE_INIT(hkey); | |
2733 | IBM_HANDLE_INIT(lght); | |
2734 | IBM_HANDLE_INIT(cmos); | |
85998248 | 2735 | #ifdef CONFIG_THINKPAD_ACPI_DOCK |
78f81cc4 | 2736 | IBM_HANDLE_INIT(dock); |
63e5f248 | 2737 | #endif |
78f81cc4 | 2738 | IBM_HANDLE_INIT(pci); |
85998248 | 2739 | #ifdef CONFIG_THINKPAD_ACPI_BAY |
78f81cc4 BD |
2740 | IBM_HANDLE_INIT(bay); |
2741 | if (bay_handle) | |
2742 | IBM_HANDLE_INIT(bay_ej); | |
2743 | IBM_HANDLE_INIT(bay2); | |
2744 | if (bay2_handle) | |
2745 | IBM_HANDLE_INIT(bay2_ej); | |
85998248 | 2746 | #endif /* CONFIG_THINKPAD_ACPI_BAY */ |
78f81cc4 BD |
2747 | IBM_HANDLE_INIT(beep); |
2748 | IBM_HANDLE_INIT(ecrd); | |
2749 | IBM_HANDLE_INIT(ecwr); | |
2750 | IBM_HANDLE_INIT(fans); | |
2751 | IBM_HANDLE_INIT(gfan); | |
2752 | IBM_HANDLE_INIT(sfan); | |
1da177e4 LT |
2753 | |
2754 | proc_dir = proc_mkdir(IBM_DIR, acpi_root_dir); | |
2755 | if (!proc_dir) { | |
2756 | printk(IBM_ERR "unable to create proc dir %s", IBM_DIR); | |
3945ac36 | 2757 | acpi_ibm_exit(); |
1da177e4 LT |
2758 | return -ENODEV; |
2759 | } | |
2760 | proc_dir->owner = THIS_MODULE; | |
78f81cc4 BD |
2761 | |
2762 | for (i = 0; i < ARRAY_SIZE(ibms); i++) { | |
1da177e4 | 2763 | ret = ibm_init(&ibms[i]); |
78f81cc4 BD |
2764 | if (ret >= 0 && *ibms[i].param) |
2765 | ret = ibms[i].write(ibms[i].param); | |
1da177e4 LT |
2766 | if (ret < 0) { |
2767 | acpi_ibm_exit(); | |
2768 | return ret; | |
2769 | } | |
2770 | } | |
2771 | ||
2772 | return 0; | |
2773 | } | |
2774 | ||
56b6aeb0 HMH |
2775 | static void acpi_ibm_exit(void) |
2776 | { | |
2777 | int i; | |
2778 | ||
2779 | for (i = ARRAY_SIZE(ibms) - 1; i >= 0; i--) | |
2780 | ibm_exit(&ibms[i]); | |
2781 | ||
2782 | if (proc_dir) | |
2783 | remove_proc_entry(IBM_DIR, acpi_root_dir); | |
2784 | ||
2785 | if (ibm_thinkpad_ec_found) | |
2786 | kfree(ibm_thinkpad_ec_found); | |
2787 | } | |
2788 | ||
1da177e4 LT |
2789 | module_init(acpi_ibm_init); |
2790 | module_exit(acpi_ibm_exit); |