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1 | /* | |
2 | * thinkpad_acpi.c - ThinkPad ACPI Extras | |
3 | * | |
4 | * | |
5 | * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> | |
6 | * Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
21 | * 02110-1301, USA. | |
22 | */ | |
23 | ||
24 | #define IBM_VERSION "0.14" | |
25 | ||
26 | /* | |
27 | * Changelog: | |
28 | * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to | |
29 | * drivers/misc. | |
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. | |
34 | * | |
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 | |
44 | * 2005-01-16 0.10 fix module loading on R30, R31 | |
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 | |
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 | |
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 | |
82 | */ | |
83 | ||
84 | #include "thinkpad_acpi.h" | |
85 | ||
86 | MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh"); | |
87 | MODULE_DESCRIPTION(IBM_DESC); | |
88 | MODULE_VERSION(IBM_VERSION); | |
89 | MODULE_LICENSE("GPL"); | |
90 | ||
91 | /* Please remove this in year 2009 */ | |
92 | MODULE_ALIAS("ibm_acpi"); | |
93 | ||
94 | #define __unused __attribute__ ((unused)) | |
95 | ||
96 | /**************************************************************************** | |
97 | **************************************************************************** | |
98 | * | |
99 | * ACPI Helpers and device model | |
100 | * | |
101 | **************************************************************************** | |
102 | ****************************************************************************/ | |
103 | ||
104 | /************************************************************************* | |
105 | * ACPI basic handles | |
106 | */ | |
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; \ | |
113 | static char *object##_path; \ | |
114 | static char *object##_paths[] = { paths } | |
115 | ||
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 */ | |
123 | ); | |
124 | ||
125 | IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */ | |
126 | IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */ | |
127 | ||
128 | ||
129 | /************************************************************************* | |
130 | * Misc ACPI handles | |
131 | */ | |
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 */ | |
136 | ); /* all others */ | |
137 | ||
138 | IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ | |
139 | "^HKEY", /* R30, R31 */ | |
140 | "HKEY", /* all others */ | |
141 | ); /* 570 */ | |
142 | ||
143 | ||
144 | /************************************************************************* | |
145 | * ACPI helpers | |
146 | */ | |
147 | ||
148 | static int acpi_evalf(acpi_handle handle, | |
149 | void *res, char *method, char *fmt, ...) | |
150 | { | |
151 | char *fmt0 = fmt; | |
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; | |
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; | |
186 | /* add more types as needed */ | |
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 | ||
195 | if (res_type != 'v') { | |
196 | result.length = sizeof(out_obj); | |
197 | result.pointer = &out_obj; | |
198 | resultp = &result; | |
199 | } else | |
200 | resultp = NULL; | |
201 | ||
202 | status = acpi_evaluate_object(handle, method, ¶ms, resultp); | |
203 | ||
204 | switch (res_type) { | |
205 | case 'd': /* int */ | |
206 | if (res) | |
207 | *(int *)res = out_obj.integer.value; | |
208 | success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER; | |
209 | break; | |
210 | case 'v': /* void */ | |
211 | success = status == AE_OK; | |
212 | break; | |
213 | /* add more types as needed */ | |
214 | default: | |
215 | printk(IBM_ERR "acpi_evalf() called " | |
216 | "with invalid format character '%c'\n", res_type); | |
217 | return 0; | |
218 | } | |
219 | ||
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 drv_acpi_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_acpi_notify(acpi_handle handle, u32 event, void *data) | |
299 | { | |
300 | struct ibm_struct *ibm = data; | |
301 | ||
302 | if (!ibm || !ibm->acpi || !ibm->acpi->notify) | |
303 | return; | |
304 | ||
305 | ibm->acpi->notify(ibm, event); | |
306 | } | |
307 | ||
308 | static int __init setup_acpi_notify(struct ibm_struct *ibm) | |
309 | { | |
310 | acpi_status status; | |
311 | int ret; | |
312 | ||
313 | BUG_ON(!ibm->acpi); | |
314 | ||
315 | if (!*ibm->acpi->handle) | |
316 | return 0; | |
317 | ||
318 | dbg_printk(TPACPI_DBG_INIT, | |
319 | "setting up ACPI notify for %s\n", ibm->name); | |
320 | ||
321 | ret = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); | |
322 | if (ret < 0) { | |
323 | printk(IBM_ERR "%s device not present\n", ibm->name); | |
324 | return -ENODEV; | |
325 | } | |
326 | ||
327 | acpi_driver_data(ibm->acpi->device) = ibm; | |
328 | sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", | |
329 | IBM_ACPI_EVENT_PREFIX, | |
330 | ibm->name); | |
331 | ||
332 | status = acpi_install_notify_handler(*ibm->acpi->handle, | |
333 | ibm->acpi->type, dispatch_acpi_notify, ibm); | |
334 | if (ACPI_FAILURE(status)) { | |
335 | if (status == AE_ALREADY_EXISTS) { | |
336 | printk(IBM_NOTICE "another device driver is already handling %s events\n", | |
337 | ibm->name); | |
338 | } else { | |
339 | printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n", | |
340 | ibm->name, status); | |
341 | } | |
342 | return -ENODEV; | |
343 | } | |
344 | ibm->flags.acpi_notify_installed = 1; | |
345 | return 0; | |
346 | } | |
347 | ||
348 | static int __init tpacpi_device_add(struct acpi_device *device) | |
349 | { | |
350 | return 0; | |
351 | } | |
352 | ||
353 | static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) | |
354 | { | |
355 | int ret; | |
356 | ||
357 | dbg_printk(TPACPI_DBG_INIT, | |
358 | "registering %s as an ACPI driver\n", ibm->name); | |
359 | ||
360 | BUG_ON(!ibm->acpi); | |
361 | ||
362 | ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); | |
363 | if (!ibm->acpi->driver) { | |
364 | printk(IBM_ERR "kzalloc(ibm->driver) failed\n"); | |
365 | return -ENOMEM; | |
366 | } | |
367 | ||
368 | sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name); | |
369 | ibm->acpi->driver->ids = ibm->acpi->hid; | |
370 | ibm->acpi->driver->ops.add = &tpacpi_device_add; | |
371 | ||
372 | ret = acpi_bus_register_driver(ibm->acpi->driver); | |
373 | if (ret < 0) { | |
374 | printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n", | |
375 | ibm->acpi->hid, ret); | |
376 | kfree(ibm->acpi->driver); | |
377 | ibm->acpi->driver = NULL; | |
378 | } else if (!ret) | |
379 | ibm->flags.acpi_driver_registered = 1; | |
380 | ||
381 | return ret; | |
382 | } | |
383 | ||
384 | ||
385 | /**************************************************************************** | |
386 | **************************************************************************** | |
387 | * | |
388 | * Procfs Helpers | |
389 | * | |
390 | **************************************************************************** | |
391 | ****************************************************************************/ | |
392 | ||
393 | static int dispatch_procfs_read(char *page, char **start, off_t off, | |
394 | int count, int *eof, void *data) | |
395 | { | |
396 | struct ibm_struct *ibm = data; | |
397 | int len; | |
398 | ||
399 | if (!ibm || !ibm->read) | |
400 | return -EINVAL; | |
401 | ||
402 | len = ibm->read(page); | |
403 | if (len < 0) | |
404 | return len; | |
405 | ||
406 | if (len <= off + count) | |
407 | *eof = 1; | |
408 | *start = page + off; | |
409 | len -= off; | |
410 | if (len > count) | |
411 | len = count; | |
412 | if (len < 0) | |
413 | len = 0; | |
414 | ||
415 | return len; | |
416 | } | |
417 | ||
418 | static int dispatch_procfs_write(struct file *file, | |
419 | const char __user * userbuf, | |
420 | unsigned long count, void *data) | |
421 | { | |
422 | struct ibm_struct *ibm = data; | |
423 | char *kernbuf; | |
424 | int ret; | |
425 | ||
426 | if (!ibm || !ibm->write) | |
427 | return -EINVAL; | |
428 | ||
429 | kernbuf = kmalloc(count + 2, GFP_KERNEL); | |
430 | if (!kernbuf) | |
431 | return -ENOMEM; | |
432 | ||
433 | if (copy_from_user(kernbuf, userbuf, count)) { | |
434 | kfree(kernbuf); | |
435 | return -EFAULT; | |
436 | } | |
437 | ||
438 | kernbuf[count] = 0; | |
439 | strcat(kernbuf, ","); | |
440 | ret = ibm->write(kernbuf); | |
441 | if (ret == 0) | |
442 | ret = count; | |
443 | ||
444 | kfree(kernbuf); | |
445 | ||
446 | return ret; | |
447 | } | |
448 | ||
449 | static char *next_cmd(char **cmds) | |
450 | { | |
451 | char *start = *cmds; | |
452 | char *end; | |
453 | ||
454 | while ((end = strchr(start, ',')) && end == start) | |
455 | start = end + 1; | |
456 | ||
457 | if (!end) | |
458 | return NULL; | |
459 | ||
460 | *end = 0; | |
461 | *cmds = end + 1; | |
462 | return start; | |
463 | } | |
464 | ||
465 | ||
466 | /**************************************************************************** | |
467 | **************************************************************************** | |
468 | * | |
469 | * Subdrivers | |
470 | * | |
471 | **************************************************************************** | |
472 | ****************************************************************************/ | |
473 | ||
474 | /************************************************************************* | |
475 | * thinkpad-acpi init subdriver | |
476 | */ | |
477 | ||
478 | static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm) | |
479 | { | |
480 | printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION); | |
481 | printk(IBM_INFO "%s\n", IBM_URL); | |
482 | ||
483 | if (ibm_thinkpad_ec_found) | |
484 | printk(IBM_INFO "ThinkPad EC firmware %s\n", | |
485 | ibm_thinkpad_ec_found); | |
486 | ||
487 | return 0; | |
488 | } | |
489 | ||
490 | static int thinkpad_acpi_driver_read(char *p) | |
491 | { | |
492 | int len = 0; | |
493 | ||
494 | len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC); | |
495 | len += sprintf(p + len, "version:\t%s\n", IBM_VERSION); | |
496 | ||
497 | return len; | |
498 | } | |
499 | ||
500 | static struct ibm_struct thinkpad_acpi_driver_data = { | |
501 | .name = "driver", | |
502 | .read = thinkpad_acpi_driver_read, | |
503 | }; | |
504 | ||
505 | /************************************************************************* | |
506 | * Hotkey subdriver | |
507 | */ | |
508 | ||
509 | static int hotkey_orig_status; | |
510 | static int hotkey_orig_mask; | |
511 | ||
512 | static int __init hotkey_init(struct ibm_init_struct *iibm) | |
513 | { | |
514 | vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n"); | |
515 | ||
516 | IBM_ACPIHANDLE_INIT(hkey); | |
517 | ||
518 | /* hotkey not supported on 570 */ | |
519 | tp_features.hotkey = hkey_handle != NULL; | |
520 | ||
521 | vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n", | |
522 | str_supported(tp_features.hotkey)); | |
523 | ||
524 | if (tp_features.hotkey) { | |
525 | /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, | |
526 | A30, R30, R31, T20-22, X20-21, X22-24 */ | |
527 | tp_features.hotkey_mask = | |
528 | acpi_evalf(hkey_handle, NULL, "DHKN", "qv"); | |
529 | ||
530 | vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n", | |
531 | str_supported(tp_features.hotkey_mask)); | |
532 | ||
533 | if (!hotkey_get(&hotkey_orig_status, &hotkey_orig_mask)) | |
534 | return -ENODEV; | |
535 | } | |
536 | ||
537 | return (tp_features.hotkey)? 0 : 1; | |
538 | } | |
539 | ||
540 | static void hotkey_exit(void) | |
541 | { | |
542 | if (tp_features.hotkey) { | |
543 | dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n"); | |
544 | hotkey_set(hotkey_orig_status, hotkey_orig_mask); | |
545 | } | |
546 | } | |
547 | ||
548 | static void hotkey_notify(struct ibm_struct *ibm, u32 event) | |
549 | { | |
550 | int hkey; | |
551 | ||
552 | if (acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) | |
553 | acpi_bus_generate_event(ibm->acpi->device, event, hkey); | |
554 | else { | |
555 | printk(IBM_ERR "unknown hotkey event %d\n", event); | |
556 | acpi_bus_generate_event(ibm->acpi->device, event, 0); | |
557 | } | |
558 | } | |
559 | ||
560 | static int hotkey_get(int *status, int *mask) | |
561 | { | |
562 | if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) | |
563 | return 0; | |
564 | ||
565 | if (tp_features.hotkey_mask) | |
566 | if (!acpi_evalf(hkey_handle, mask, "DHKN", "d")) | |
567 | return 0; | |
568 | ||
569 | return 1; | |
570 | } | |
571 | ||
572 | static int hotkey_set(int status, int mask) | |
573 | { | |
574 | int i; | |
575 | ||
576 | if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status)) | |
577 | return 0; | |
578 | ||
579 | if (tp_features.hotkey_mask) | |
580 | for (i = 0; i < 32; i++) { | |
581 | int bit = ((1 << i) & mask) != 0; | |
582 | if (!acpi_evalf(hkey_handle, | |
583 | NULL, "MHKM", "vdd", i + 1, bit)) | |
584 | return 0; | |
585 | } | |
586 | ||
587 | return 1; | |
588 | } | |
589 | ||
590 | static int hotkey_read(char *p) | |
591 | { | |
592 | int status, mask; | |
593 | int len = 0; | |
594 | ||
595 | if (!tp_features.hotkey) { | |
596 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
597 | return len; | |
598 | } | |
599 | ||
600 | if (!hotkey_get(&status, &mask)) | |
601 | return -EIO; | |
602 | ||
603 | len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0)); | |
604 | if (tp_features.hotkey_mask) { | |
605 | len += sprintf(p + len, "mask:\t\t0x%04x\n", mask); | |
606 | len += sprintf(p + len, | |
607 | "commands:\tenable, disable, reset, <mask>\n"); | |
608 | } else { | |
609 | len += sprintf(p + len, "mask:\t\tnot supported\n"); | |
610 | len += sprintf(p + len, "commands:\tenable, disable, reset\n"); | |
611 | } | |
612 | ||
613 | return len; | |
614 | } | |
615 | ||
616 | static int hotkey_write(char *buf) | |
617 | { | |
618 | int status, mask; | |
619 | char *cmd; | |
620 | int do_cmd = 0; | |
621 | ||
622 | if (!tp_features.hotkey) | |
623 | return -ENODEV; | |
624 | ||
625 | if (!hotkey_get(&status, &mask)) | |
626 | return -EIO; | |
627 | ||
628 | while ((cmd = next_cmd(&buf))) { | |
629 | if (strlencmp(cmd, "enable") == 0) { | |
630 | status = 1; | |
631 | } else if (strlencmp(cmd, "disable") == 0) { | |
632 | status = 0; | |
633 | } else if (strlencmp(cmd, "reset") == 0) { | |
634 | status = hotkey_orig_status; | |
635 | mask = hotkey_orig_mask; | |
636 | } else if (sscanf(cmd, "0x%x", &mask) == 1) { | |
637 | /* mask set */ | |
638 | } else if (sscanf(cmd, "%x", &mask) == 1) { | |
639 | /* mask set */ | |
640 | } else | |
641 | return -EINVAL; | |
642 | do_cmd = 1; | |
643 | } | |
644 | ||
645 | if (do_cmd && !hotkey_set(status, mask)) | |
646 | return -EIO; | |
647 | ||
648 | return 0; | |
649 | } | |
650 | ||
651 | static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { | |
652 | .hid = IBM_HKEY_HID, | |
653 | .notify = hotkey_notify, | |
654 | .handle = &hkey_handle, | |
655 | .type = ACPI_DEVICE_NOTIFY, | |
656 | }; | |
657 | ||
658 | static struct ibm_struct hotkey_driver_data = { | |
659 | .name = "hotkey", | |
660 | .read = hotkey_read, | |
661 | .write = hotkey_write, | |
662 | .exit = hotkey_exit, | |
663 | .acpi = &ibm_hotkey_acpidriver, | |
664 | }; | |
665 | ||
666 | /************************************************************************* | |
667 | * Bluetooth subdriver | |
668 | */ | |
669 | ||
670 | static int __init bluetooth_init(struct ibm_init_struct *iibm) | |
671 | { | |
672 | vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n"); | |
673 | ||
674 | IBM_ACPIHANDLE_INIT(hkey); | |
675 | ||
676 | /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, | |
677 | G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ | |
678 | tp_features.bluetooth = hkey_handle && | |
679 | acpi_evalf(hkey_handle, NULL, "GBDC", "qv"); | |
680 | ||
681 | vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s\n", | |
682 | str_supported(tp_features.bluetooth)); | |
683 | ||
684 | return (tp_features.bluetooth)? 0 : 1; | |
685 | } | |
686 | ||
687 | static int bluetooth_status(void) | |
688 | { | |
689 | int status; | |
690 | ||
691 | if (!tp_features.bluetooth || | |
692 | !acpi_evalf(hkey_handle, &status, "GBDC", "d")) | |
693 | status = 0; | |
694 | ||
695 | return status; | |
696 | } | |
697 | ||
698 | static int bluetooth_read(char *p) | |
699 | { | |
700 | int len = 0; | |
701 | int status = bluetooth_status(); | |
702 | ||
703 | if (!tp_features.bluetooth) | |
704 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
705 | else if (!(status & 1)) | |
706 | len += sprintf(p + len, "status:\t\tnot installed\n"); | |
707 | else { | |
708 | len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1)); | |
709 | len += sprintf(p + len, "commands:\tenable, disable\n"); | |
710 | } | |
711 | ||
712 | return len; | |
713 | } | |
714 | ||
715 | static int bluetooth_write(char *buf) | |
716 | { | |
717 | int status = bluetooth_status(); | |
718 | char *cmd; | |
719 | int do_cmd = 0; | |
720 | ||
721 | if (!tp_features.bluetooth) | |
722 | return -ENODEV; | |
723 | ||
724 | while ((cmd = next_cmd(&buf))) { | |
725 | if (strlencmp(cmd, "enable") == 0) { | |
726 | status |= 2; | |
727 | } else if (strlencmp(cmd, "disable") == 0) { | |
728 | status &= ~2; | |
729 | } else | |
730 | return -EINVAL; | |
731 | do_cmd = 1; | |
732 | } | |
733 | ||
734 | if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) | |
735 | return -EIO; | |
736 | ||
737 | return 0; | |
738 | } | |
739 | ||
740 | static struct ibm_struct bluetooth_driver_data = { | |
741 | .name = "bluetooth", | |
742 | .read = bluetooth_read, | |
743 | .write = bluetooth_write, | |
744 | }; | |
745 | ||
746 | /************************************************************************* | |
747 | * Wan subdriver | |
748 | */ | |
749 | ||
750 | static int __init wan_init(struct ibm_init_struct *iibm) | |
751 | { | |
752 | vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n"); | |
753 | ||
754 | IBM_ACPIHANDLE_INIT(hkey); | |
755 | ||
756 | tp_features.wan = hkey_handle && | |
757 | acpi_evalf(hkey_handle, NULL, "GWAN", "qv"); | |
758 | ||
759 | vdbg_printk(TPACPI_DBG_INIT, "wan is %s\n", | |
760 | str_supported(tp_features.wan)); | |
761 | ||
762 | return (tp_features.wan)? 0 : 1; | |
763 | } | |
764 | ||
765 | static int wan_status(void) | |
766 | { | |
767 | int status; | |
768 | ||
769 | if (!tp_features.wan || | |
770 | !acpi_evalf(hkey_handle, &status, "GWAN", "d")) | |
771 | status = 0; | |
772 | ||
773 | return status; | |
774 | } | |
775 | ||
776 | static int wan_read(char *p) | |
777 | { | |
778 | int len = 0; | |
779 | int status = wan_status(); | |
780 | ||
781 | if (!tp_features.wan) | |
782 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
783 | else if (!(status & 1)) | |
784 | len += sprintf(p + len, "status:\t\tnot installed\n"); | |
785 | else { | |
786 | len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 1)); | |
787 | len += sprintf(p + len, "commands:\tenable, disable\n"); | |
788 | } | |
789 | ||
790 | return len; | |
791 | } | |
792 | ||
793 | static int wan_write(char *buf) | |
794 | { | |
795 | int status = wan_status(); | |
796 | char *cmd; | |
797 | int do_cmd = 0; | |
798 | ||
799 | if (!tp_features.wan) | |
800 | return -ENODEV; | |
801 | ||
802 | while ((cmd = next_cmd(&buf))) { | |
803 | if (strlencmp(cmd, "enable") == 0) { | |
804 | status |= 2; | |
805 | } else if (strlencmp(cmd, "disable") == 0) { | |
806 | status &= ~2; | |
807 | } else | |
808 | return -EINVAL; | |
809 | do_cmd = 1; | |
810 | } | |
811 | ||
812 | if (do_cmd && !acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) | |
813 | return -EIO; | |
814 | ||
815 | return 0; | |
816 | } | |
817 | ||
818 | static struct ibm_struct wan_driver_data = { | |
819 | .name = "wan", | |
820 | .read = wan_read, | |
821 | .write = wan_write, | |
822 | .flags.experimental = 1, | |
823 | }; | |
824 | ||
825 | /************************************************************************* | |
826 | * Video subdriver | |
827 | */ | |
828 | ||
829 | static enum video_access_mode video_supported; | |
830 | static int video_orig_autosw; | |
831 | ||
832 | IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ | |
833 | "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ | |
834 | "\\_SB.PCI0.VID0", /* 770e */ | |
835 | "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ | |
836 | "\\_SB.PCI0.AGP.VID", /* all others */ | |
837 | ); /* R30, R31 */ | |
838 | ||
839 | IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ | |
840 | ||
841 | static int __init video_init(struct ibm_init_struct *iibm) | |
842 | { | |
843 | int ivga; | |
844 | ||
845 | vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); | |
846 | ||
847 | IBM_ACPIHANDLE_INIT(vid); | |
848 | IBM_ACPIHANDLE_INIT(vid2); | |
849 | ||
850 | if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) | |
851 | /* G41, assume IVGA doesn't change */ | |
852 | vid_handle = vid2_handle; | |
853 | ||
854 | if (!vid_handle) | |
855 | /* video switching not supported on R30, R31 */ | |
856 | video_supported = TPACPI_VIDEO_NONE; | |
857 | else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) | |
858 | /* 570 */ | |
859 | video_supported = TPACPI_VIDEO_570; | |
860 | else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) | |
861 | /* 600e/x, 770e, 770x */ | |
862 | video_supported = TPACPI_VIDEO_770; | |
863 | else | |
864 | /* all others */ | |
865 | video_supported = TPACPI_VIDEO_NEW; | |
866 | ||
867 | vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", | |
868 | str_supported(video_supported != TPACPI_VIDEO_NONE), | |
869 | video_supported); | |
870 | ||
871 | return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1; | |
872 | } | |
873 | ||
874 | static void video_exit(void) | |
875 | { | |
876 | dbg_printk(TPACPI_DBG_EXIT, "restoring original video autoswitch mode\n"); | |
877 | acpi_evalf(vid_handle, NULL, "_DOS", "vd", video_orig_autosw); | |
878 | } | |
879 | ||
880 | static int video_status(void) | |
881 | { | |
882 | int status = 0; | |
883 | int i; | |
884 | ||
885 | if (video_supported == TPACPI_VIDEO_570) { | |
886 | if (acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 0x87)) | |
887 | status = i & 3; | |
888 | } else if (video_supported == TPACPI_VIDEO_770) { | |
889 | if (acpi_evalf(NULL, &i, "\\VCDL", "d")) | |
890 | status |= 0x01 * i; | |
891 | if (acpi_evalf(NULL, &i, "\\VCDC", "d")) | |
892 | status |= 0x02 * i; | |
893 | } else if (video_supported == TPACPI_VIDEO_NEW) { | |
894 | acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1); | |
895 | if (acpi_evalf(NULL, &i, "\\VCDC", "d")) | |
896 | status |= 0x02 * i; | |
897 | ||
898 | acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0); | |
899 | if (acpi_evalf(NULL, &i, "\\VCDL", "d")) | |
900 | status |= 0x01 * i; | |
901 | if (acpi_evalf(NULL, &i, "\\VCDD", "d")) | |
902 | status |= 0x08 * i; | |
903 | } | |
904 | ||
905 | return status; | |
906 | } | |
907 | ||
908 | static int video_autosw(void) | |
909 | { | |
910 | int autosw = 0; | |
911 | ||
912 | if (video_supported == TPACPI_VIDEO_570) | |
913 | acpi_evalf(vid_handle, &autosw, "SWIT", "d"); | |
914 | else if (video_supported == TPACPI_VIDEO_770 || | |
915 | video_supported == TPACPI_VIDEO_NEW) | |
916 | acpi_evalf(vid_handle, &autosw, "^VDEE", "d"); | |
917 | ||
918 | return autosw & 1; | |
919 | } | |
920 | ||
921 | static int video_switch(void) | |
922 | { | |
923 | int autosw = video_autosw(); | |
924 | int ret; | |
925 | ||
926 | if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1)) | |
927 | return -EIO; | |
928 | ret = video_supported == TPACPI_VIDEO_570 ? | |
929 | acpi_evalf(ec_handle, NULL, "_Q16", "v") : | |
930 | acpi_evalf(vid_handle, NULL, "VSWT", "v"); | |
931 | acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw); | |
932 | ||
933 | return ret; | |
934 | } | |
935 | ||
936 | static int video_expand(void) | |
937 | { | |
938 | if (video_supported == TPACPI_VIDEO_570) | |
939 | return acpi_evalf(ec_handle, NULL, "_Q17", "v"); | |
940 | else if (video_supported == TPACPI_VIDEO_770) | |
941 | return acpi_evalf(vid_handle, NULL, "VEXP", "v"); | |
942 | else | |
943 | return acpi_evalf(NULL, NULL, "\\VEXP", "v"); | |
944 | } | |
945 | ||
946 | static int video_switch2(int status) | |
947 | { | |
948 | int ret; | |
949 | ||
950 | if (video_supported == TPACPI_VIDEO_570) { | |
951 | ret = acpi_evalf(NULL, NULL, | |
952 | "\\_SB.PHS2", "vdd", 0x8b, status | 0x80); | |
953 | } else if (video_supported == TPACPI_VIDEO_770) { | |
954 | int autosw = video_autosw(); | |
955 | if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1)) | |
956 | return -EIO; | |
957 | ||
958 | ret = acpi_evalf(vid_handle, NULL, | |
959 | "ASWT", "vdd", status * 0x100, 0); | |
960 | ||
961 | acpi_evalf(vid_handle, NULL, "_DOS", "vd", autosw); | |
962 | } else { | |
963 | ret = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && | |
964 | acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); | |
965 | } | |
966 | ||
967 | return ret; | |
968 | } | |
969 | ||
970 | static int video_read(char *p) | |
971 | { | |
972 | int status = video_status(); | |
973 | int autosw = video_autosw(); | |
974 | int len = 0; | |
975 | ||
976 | if (!video_supported) { | |
977 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
978 | return len; | |
979 | } | |
980 | ||
981 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
982 | len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0)); | |
983 | len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1)); | |
984 | if (video_supported == TPACPI_VIDEO_NEW) | |
985 | len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3)); | |
986 | len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0)); | |
987 | len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n"); | |
988 | len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n"); | |
989 | if (video_supported == TPACPI_VIDEO_NEW) | |
990 | len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n"); | |
991 | len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n"); | |
992 | len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n"); | |
993 | ||
994 | return len; | |
995 | } | |
996 | ||
997 | static int video_write(char *buf) | |
998 | { | |
999 | char *cmd; | |
1000 | int enable, disable, status; | |
1001 | ||
1002 | if (!video_supported) | |
1003 | return -ENODEV; | |
1004 | ||
1005 | enable = disable = 0; | |
1006 | ||
1007 | while ((cmd = next_cmd(&buf))) { | |
1008 | if (strlencmp(cmd, "lcd_enable") == 0) { | |
1009 | enable |= 0x01; | |
1010 | } else if (strlencmp(cmd, "lcd_disable") == 0) { | |
1011 | disable |= 0x01; | |
1012 | } else if (strlencmp(cmd, "crt_enable") == 0) { | |
1013 | enable |= 0x02; | |
1014 | } else if (strlencmp(cmd, "crt_disable") == 0) { | |
1015 | disable |= 0x02; | |
1016 | } else if (video_supported == TPACPI_VIDEO_NEW && | |
1017 | strlencmp(cmd, "dvi_enable") == 0) { | |
1018 | enable |= 0x08; | |
1019 | } else if (video_supported == TPACPI_VIDEO_NEW && | |
1020 | strlencmp(cmd, "dvi_disable") == 0) { | |
1021 | disable |= 0x08; | |
1022 | } else if (strlencmp(cmd, "auto_enable") == 0) { | |
1023 | if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 1)) | |
1024 | return -EIO; | |
1025 | } else if (strlencmp(cmd, "auto_disable") == 0) { | |
1026 | if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", 0)) | |
1027 | return -EIO; | |
1028 | } else if (strlencmp(cmd, "video_switch") == 0) { | |
1029 | if (!video_switch()) | |
1030 | return -EIO; | |
1031 | } else if (strlencmp(cmd, "expand_toggle") == 0) { | |
1032 | if (!video_expand()) | |
1033 | return -EIO; | |
1034 | } else | |
1035 | return -EINVAL; | |
1036 | } | |
1037 | ||
1038 | if (enable || disable) { | |
1039 | status = (video_status() & 0x0f & ~disable) | enable; | |
1040 | if (!video_switch2(status)) | |
1041 | return -EIO; | |
1042 | } | |
1043 | ||
1044 | return 0; | |
1045 | } | |
1046 | ||
1047 | static struct ibm_struct video_driver_data = { | |
1048 | .name = "video", | |
1049 | .read = video_read, | |
1050 | .write = video_write, | |
1051 | .exit = video_exit, | |
1052 | }; | |
1053 | ||
1054 | /************************************************************************* | |
1055 | * Light (thinklight) subdriver | |
1056 | */ | |
1057 | ||
1058 | IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ | |
1059 | IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */ | |
1060 | ||
1061 | static int __init light_init(struct ibm_init_struct *iibm) | |
1062 | { | |
1063 | vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); | |
1064 | ||
1065 | IBM_ACPIHANDLE_INIT(ledb); | |
1066 | IBM_ACPIHANDLE_INIT(lght); | |
1067 | IBM_ACPIHANDLE_INIT(cmos); | |
1068 | ||
1069 | /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ | |
1070 | tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; | |
1071 | ||
1072 | if (tp_features.light) | |
1073 | /* light status not supported on | |
1074 | 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ | |
1075 | tp_features.light_status = | |
1076 | acpi_evalf(ec_handle, NULL, "KBLT", "qv"); | |
1077 | ||
1078 | vdbg_printk(TPACPI_DBG_INIT, "light is %s\n", | |
1079 | str_supported(tp_features.light)); | |
1080 | ||
1081 | return (tp_features.light)? 0 : 1; | |
1082 | } | |
1083 | ||
1084 | static int light_read(char *p) | |
1085 | { | |
1086 | int len = 0; | |
1087 | int status = 0; | |
1088 | ||
1089 | if (!tp_features.light) { | |
1090 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1091 | } else if (!tp_features.light_status) { | |
1092 | len += sprintf(p + len, "status:\t\tunknown\n"); | |
1093 | len += sprintf(p + len, "commands:\ton, off\n"); | |
1094 | } else { | |
1095 | if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) | |
1096 | return -EIO; | |
1097 | len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0)); | |
1098 | len += sprintf(p + len, "commands:\ton, off\n"); | |
1099 | } | |
1100 | ||
1101 | return len; | |
1102 | } | |
1103 | ||
1104 | static int light_write(char *buf) | |
1105 | { | |
1106 | int cmos_cmd, lght_cmd; | |
1107 | char *cmd; | |
1108 | int success; | |
1109 | ||
1110 | if (!tp_features.light) | |
1111 | return -ENODEV; | |
1112 | ||
1113 | while ((cmd = next_cmd(&buf))) { | |
1114 | if (strlencmp(cmd, "on") == 0) { | |
1115 | cmos_cmd = 0x0c; | |
1116 | lght_cmd = 1; | |
1117 | } else if (strlencmp(cmd, "off") == 0) { | |
1118 | cmos_cmd = 0x0d; | |
1119 | lght_cmd = 0; | |
1120 | } else | |
1121 | return -EINVAL; | |
1122 | ||
1123 | success = cmos_handle ? | |
1124 | acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) : | |
1125 | acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd); | |
1126 | if (!success) | |
1127 | return -EIO; | |
1128 | } | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | ||
1133 | static struct ibm_struct light_driver_data = { | |
1134 | .name = "light", | |
1135 | .read = light_read, | |
1136 | .write = light_write, | |
1137 | }; | |
1138 | ||
1139 | /************************************************************************* | |
1140 | * Dock subdriver | |
1141 | */ | |
1142 | ||
1143 | #ifdef CONFIG_THINKPAD_ACPI_DOCK | |
1144 | ||
1145 | IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */ | |
1146 | "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */ | |
1147 | "\\_SB.PCI0.PCI1.DOCK", /* all others */ | |
1148 | "\\_SB.PCI.ISA.SLCE", /* 570 */ | |
1149 | ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */ | |
1150 | ||
1151 | /* don't list other alternatives as we install a notify handler on the 570 */ | |
1152 | IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */ | |
1153 | ||
1154 | #define dock_docked() (_sta(dock_handle) & 1) | |
1155 | ||
1156 | static int __init dock_init(struct ibm_init_struct *iibm) | |
1157 | { | |
1158 | vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n"); | |
1159 | ||
1160 | IBM_ACPIHANDLE_INIT(dock); | |
1161 | IBM_ACPIHANDLE_INIT(pci); | |
1162 | ||
1163 | vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n", | |
1164 | str_supported(dock_handle != NULL)); | |
1165 | ||
1166 | return (dock_handle)? 0 : 1; | |
1167 | } | |
1168 | ||
1169 | static void dock_notify(struct ibm_struct *ibm, u32 event) | |
1170 | { | |
1171 | int docked = dock_docked(); | |
1172 | int pci = ibm->acpi->hid && strstr(ibm->acpi->hid, IBM_PCI_HID); | |
1173 | ||
1174 | if (event == 1 && !pci) /* 570 */ | |
1175 | acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */ | |
1176 | else if (event == 1 && pci) /* 570 */ | |
1177 | acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */ | |
1178 | else if (event == 3 && docked) | |
1179 | acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */ | |
1180 | else if (event == 3 && !docked) | |
1181 | acpi_bus_generate_event(ibm->acpi->device, event, 2); /* undock */ | |
1182 | else if (event == 0 && docked) | |
1183 | acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */ | |
1184 | else { | |
1185 | printk(IBM_ERR "unknown dock event %d, status %d\n", | |
1186 | event, _sta(dock_handle)); | |
1187 | acpi_bus_generate_event(ibm->acpi->device, event, 0); /* unknown */ | |
1188 | } | |
1189 | } | |
1190 | ||
1191 | static int dock_read(char *p) | |
1192 | { | |
1193 | int len = 0; | |
1194 | int docked = dock_docked(); | |
1195 | ||
1196 | if (!dock_handle) | |
1197 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1198 | else if (!docked) | |
1199 | len += sprintf(p + len, "status:\t\tundocked\n"); | |
1200 | else { | |
1201 | len += sprintf(p + len, "status:\t\tdocked\n"); | |
1202 | len += sprintf(p + len, "commands:\tdock, undock\n"); | |
1203 | } | |
1204 | ||
1205 | return len; | |
1206 | } | |
1207 | ||
1208 | static int dock_write(char *buf) | |
1209 | { | |
1210 | char *cmd; | |
1211 | ||
1212 | if (!dock_docked()) | |
1213 | return -ENODEV; | |
1214 | ||
1215 | while ((cmd = next_cmd(&buf))) { | |
1216 | if (strlencmp(cmd, "undock") == 0) { | |
1217 | if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) || | |
1218 | !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1)) | |
1219 | return -EIO; | |
1220 | } else if (strlencmp(cmd, "dock") == 0) { | |
1221 | if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1)) | |
1222 | return -EIO; | |
1223 | } else | |
1224 | return -EINVAL; | |
1225 | } | |
1226 | ||
1227 | return 0; | |
1228 | } | |
1229 | ||
1230 | static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = { | |
1231 | { | |
1232 | .notify = dock_notify, | |
1233 | .handle = &dock_handle, | |
1234 | .type = ACPI_SYSTEM_NOTIFY, | |
1235 | }, | |
1236 | { | |
1237 | .hid = IBM_PCI_HID, | |
1238 | .notify = dock_notify, | |
1239 | .handle = &pci_handle, | |
1240 | .type = ACPI_SYSTEM_NOTIFY, | |
1241 | }, | |
1242 | }; | |
1243 | ||
1244 | static struct ibm_struct dock_driver_data[2] = { | |
1245 | { | |
1246 | .name = "dock", | |
1247 | .read = dock_read, | |
1248 | .write = dock_write, | |
1249 | .acpi = &ibm_dock_acpidriver[0], | |
1250 | }, | |
1251 | { | |
1252 | .name = "dock", | |
1253 | .acpi = &ibm_dock_acpidriver[1], | |
1254 | }, | |
1255 | }; | |
1256 | ||
1257 | #endif /* CONFIG_THINKPAD_ACPI_DOCK */ | |
1258 | ||
1259 | /************************************************************************* | |
1260 | * Bay subdriver | |
1261 | */ | |
1262 | ||
1263 | #ifdef CONFIG_THINKPAD_ACPI_BAY | |
1264 | IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */ | |
1265 | "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */ | |
1266 | "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */ | |
1267 | "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */ | |
1268 | ); /* A21e, R30, R31 */ | |
1269 | IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */ | |
1270 | "_EJ0", /* all others */ | |
1271 | ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */ | |
1272 | IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */ | |
1273 | "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */ | |
1274 | ); /* all others */ | |
1275 | IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */ | |
1276 | "_EJ0", /* 770x */ | |
1277 | ); /* all others */ | |
1278 | ||
1279 | static int __init bay_init(struct ibm_init_struct *iibm) | |
1280 | { | |
1281 | vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n"); | |
1282 | ||
1283 | IBM_ACPIHANDLE_INIT(bay); | |
1284 | if (bay_handle) | |
1285 | IBM_ACPIHANDLE_INIT(bay_ej); | |
1286 | IBM_ACPIHANDLE_INIT(bay2); | |
1287 | if (bay2_handle) | |
1288 | IBM_ACPIHANDLE_INIT(bay2_ej); | |
1289 | ||
1290 | tp_features.bay_status = bay_handle && | |
1291 | acpi_evalf(bay_handle, NULL, "_STA", "qv"); | |
1292 | tp_features.bay_status2 = bay2_handle && | |
1293 | acpi_evalf(bay2_handle, NULL, "_STA", "qv"); | |
1294 | ||
1295 | tp_features.bay_eject = bay_handle && bay_ej_handle && | |
1296 | (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental); | |
1297 | tp_features.bay_eject2 = bay2_handle && bay2_ej_handle && | |
1298 | (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental); | |
1299 | ||
1300 | vdbg_printk(TPACPI_DBG_INIT, | |
1301 | "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n", | |
1302 | str_supported(tp_features.bay_status), | |
1303 | str_supported(tp_features.bay_eject), | |
1304 | str_supported(tp_features.bay_status2), | |
1305 | str_supported(tp_features.bay_eject2)); | |
1306 | ||
1307 | return (tp_features.bay_status || tp_features.bay_eject || | |
1308 | tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1; | |
1309 | } | |
1310 | ||
1311 | static void bay_notify(struct ibm_struct *ibm, u32 event) | |
1312 | { | |
1313 | acpi_bus_generate_event(ibm->acpi->device, event, 0); | |
1314 | } | |
1315 | ||
1316 | #define bay_occupied(b) (_sta(b##_handle) & 1) | |
1317 | ||
1318 | static int bay_read(char *p) | |
1319 | { | |
1320 | int len = 0; | |
1321 | int occupied = bay_occupied(bay); | |
1322 | int occupied2 = bay_occupied(bay2); | |
1323 | int eject, eject2; | |
1324 | ||
1325 | len += sprintf(p + len, "status:\t\t%s\n", | |
1326 | tp_features.bay_status ? | |
1327 | (occupied ? "occupied" : "unoccupied") : | |
1328 | "not supported"); | |
1329 | if (tp_features.bay_status2) | |
1330 | len += sprintf(p + len, "status2:\t%s\n", occupied2 ? | |
1331 | "occupied" : "unoccupied"); | |
1332 | ||
1333 | eject = tp_features.bay_eject && occupied; | |
1334 | eject2 = tp_features.bay_eject2 && occupied2; | |
1335 | ||
1336 | if (eject && eject2) | |
1337 | len += sprintf(p + len, "commands:\teject, eject2\n"); | |
1338 | else if (eject) | |
1339 | len += sprintf(p + len, "commands:\teject\n"); | |
1340 | else if (eject2) | |
1341 | len += sprintf(p + len, "commands:\teject2\n"); | |
1342 | ||
1343 | return len; | |
1344 | } | |
1345 | ||
1346 | static int bay_write(char *buf) | |
1347 | { | |
1348 | char *cmd; | |
1349 | ||
1350 | if (!tp_features.bay_eject && !tp_features.bay_eject2) | |
1351 | return -ENODEV; | |
1352 | ||
1353 | while ((cmd = next_cmd(&buf))) { | |
1354 | if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) { | |
1355 | if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1)) | |
1356 | return -EIO; | |
1357 | } else if (tp_features.bay_eject2 && | |
1358 | strlencmp(cmd, "eject2") == 0) { | |
1359 | if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1)) | |
1360 | return -EIO; | |
1361 | } else | |
1362 | return -EINVAL; | |
1363 | } | |
1364 | ||
1365 | return 0; | |
1366 | } | |
1367 | ||
1368 | static struct tp_acpi_drv_struct ibm_bay_acpidriver = { | |
1369 | .notify = bay_notify, | |
1370 | .handle = &bay_handle, | |
1371 | .type = ACPI_SYSTEM_NOTIFY, | |
1372 | }; | |
1373 | ||
1374 | static struct ibm_struct bay_driver_data = { | |
1375 | .name = "bay", | |
1376 | .read = bay_read, | |
1377 | .write = bay_write, | |
1378 | .acpi = &ibm_bay_acpidriver, | |
1379 | }; | |
1380 | ||
1381 | #endif /* CONFIG_THINKPAD_ACPI_BAY */ | |
1382 | ||
1383 | /************************************************************************* | |
1384 | * CMOS subdriver | |
1385 | */ | |
1386 | ||
1387 | static int __init cmos_init(struct ibm_init_struct *iibm) | |
1388 | { | |
1389 | vdbg_printk(TPACPI_DBG_INIT, | |
1390 | "initializing cmos commands subdriver\n"); | |
1391 | ||
1392 | IBM_ACPIHANDLE_INIT(cmos); | |
1393 | ||
1394 | vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", | |
1395 | str_supported(cmos_handle != NULL)); | |
1396 | return (cmos_handle)? 0 : 1; | |
1397 | } | |
1398 | ||
1399 | static int cmos_eval(int cmos_cmd) | |
1400 | { | |
1401 | if (cmos_handle) | |
1402 | return acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd); | |
1403 | else | |
1404 | return 1; | |
1405 | } | |
1406 | ||
1407 | static int cmos_read(char *p) | |
1408 | { | |
1409 | int len = 0; | |
1410 | ||
1411 | /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, | |
1412 | R30, R31, T20-22, X20-21 */ | |
1413 | if (!cmos_handle) | |
1414 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1415 | else { | |
1416 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
1417 | len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n"); | |
1418 | } | |
1419 | ||
1420 | return len; | |
1421 | } | |
1422 | ||
1423 | static int cmos_write(char *buf) | |
1424 | { | |
1425 | char *cmd; | |
1426 | int cmos_cmd; | |
1427 | ||
1428 | if (!cmos_handle) | |
1429 | return -EINVAL; | |
1430 | ||
1431 | while ((cmd = next_cmd(&buf))) { | |
1432 | if (sscanf(cmd, "%u", &cmos_cmd) == 1 && | |
1433 | cmos_cmd >= 0 && cmos_cmd <= 21) { | |
1434 | /* cmos_cmd set */ | |
1435 | } else | |
1436 | return -EINVAL; | |
1437 | ||
1438 | if (!cmos_eval(cmos_cmd)) | |
1439 | return -EIO; | |
1440 | } | |
1441 | ||
1442 | return 0; | |
1443 | } | |
1444 | ||
1445 | static struct ibm_struct cmos_driver_data = { | |
1446 | .name = "cmos", | |
1447 | .read = cmos_read, | |
1448 | .write = cmos_write, | |
1449 | }; | |
1450 | ||
1451 | /************************************************************************* | |
1452 | * LED subdriver | |
1453 | */ | |
1454 | ||
1455 | static enum led_access_mode led_supported; | |
1456 | ||
1457 | IBM_HANDLE(led, ec, "SLED", /* 570 */ | |
1458 | "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ | |
1459 | "LED", /* all others */ | |
1460 | ); /* R30, R31 */ | |
1461 | ||
1462 | static int __init led_init(struct ibm_init_struct *iibm) | |
1463 | { | |
1464 | vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); | |
1465 | ||
1466 | IBM_ACPIHANDLE_INIT(led); | |
1467 | ||
1468 | if (!led_handle) | |
1469 | /* led not supported on R30, R31 */ | |
1470 | led_supported = TPACPI_LED_NONE; | |
1471 | else if (strlencmp(led_path, "SLED") == 0) | |
1472 | /* 570 */ | |
1473 | led_supported = TPACPI_LED_570; | |
1474 | else if (strlencmp(led_path, "SYSL") == 0) | |
1475 | /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ | |
1476 | led_supported = TPACPI_LED_OLD; | |
1477 | else | |
1478 | /* all others */ | |
1479 | led_supported = TPACPI_LED_NEW; | |
1480 | ||
1481 | vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", | |
1482 | str_supported(led_supported), led_supported); | |
1483 | ||
1484 | return (led_supported != TPACPI_LED_NONE)? 0 : 1; | |
1485 | } | |
1486 | ||
1487 | #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking")) | |
1488 | ||
1489 | static int led_read(char *p) | |
1490 | { | |
1491 | int len = 0; | |
1492 | ||
1493 | if (!led_supported) { | |
1494 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1495 | return len; | |
1496 | } | |
1497 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
1498 | ||
1499 | if (led_supported == TPACPI_LED_570) { | |
1500 | /* 570 */ | |
1501 | int i, status; | |
1502 | for (i = 0; i < 8; i++) { | |
1503 | if (!acpi_evalf(ec_handle, | |
1504 | &status, "GLED", "dd", 1 << i)) | |
1505 | return -EIO; | |
1506 | len += sprintf(p + len, "%d:\t\t%s\n", | |
1507 | i, led_status(status)); | |
1508 | } | |
1509 | } | |
1510 | ||
1511 | len += sprintf(p + len, "commands:\t" | |
1512 | "<led> on, <led> off, <led> blink (<led> is 0-7)\n"); | |
1513 | ||
1514 | return len; | |
1515 | } | |
1516 | ||
1517 | /* off, on, blink */ | |
1518 | static const int led_sled_arg1[] = { 0, 1, 3 }; | |
1519 | static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */ | |
1520 | static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */ | |
1521 | static const int led_led_arg1[] = { 0, 0x80, 0xc0 }; | |
1522 | ||
1523 | static int led_write(char *buf) | |
1524 | { | |
1525 | char *cmd; | |
1526 | int led, ind, ret; | |
1527 | ||
1528 | if (!led_supported) | |
1529 | return -ENODEV; | |
1530 | ||
1531 | while ((cmd = next_cmd(&buf))) { | |
1532 | if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7) | |
1533 | return -EINVAL; | |
1534 | ||
1535 | if (strstr(cmd, "off")) { | |
1536 | ind = 0; | |
1537 | } else if (strstr(cmd, "on")) { | |
1538 | ind = 1; | |
1539 | } else if (strstr(cmd, "blink")) { | |
1540 | ind = 2; | |
1541 | } else | |
1542 | return -EINVAL; | |
1543 | ||
1544 | if (led_supported == TPACPI_LED_570) { | |
1545 | /* 570 */ | |
1546 | led = 1 << led; | |
1547 | if (!acpi_evalf(led_handle, NULL, NULL, "vdd", | |
1548 | led, led_sled_arg1[ind])) | |
1549 | return -EIO; | |
1550 | } else if (led_supported == TPACPI_LED_OLD) { | |
1551 | /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ | |
1552 | led = 1 << led; | |
1553 | ret = ec_write(TPACPI_LED_EC_HLMS, led); | |
1554 | if (ret >= 0) | |
1555 | ret = | |
1556 | ec_write(TPACPI_LED_EC_HLBL, | |
1557 | led * led_exp_hlbl[ind]); | |
1558 | if (ret >= 0) | |
1559 | ret = | |
1560 | ec_write(TPACPI_LED_EC_HLCL, | |
1561 | led * led_exp_hlcl[ind]); | |
1562 | if (ret < 0) | |
1563 | return ret; | |
1564 | } else { | |
1565 | /* all others */ | |
1566 | if (!acpi_evalf(led_handle, NULL, NULL, "vdd", | |
1567 | led, led_led_arg1[ind])) | |
1568 | return -EIO; | |
1569 | } | |
1570 | } | |
1571 | ||
1572 | return 0; | |
1573 | } | |
1574 | ||
1575 | static struct ibm_struct led_driver_data = { | |
1576 | .name = "led", | |
1577 | .read = led_read, | |
1578 | .write = led_write, | |
1579 | }; | |
1580 | ||
1581 | /************************************************************************* | |
1582 | * Beep subdriver | |
1583 | */ | |
1584 | ||
1585 | IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ | |
1586 | ||
1587 | static int __init beep_init(struct ibm_init_struct *iibm) | |
1588 | { | |
1589 | vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); | |
1590 | ||
1591 | IBM_ACPIHANDLE_INIT(beep); | |
1592 | ||
1593 | vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", | |
1594 | str_supported(beep_handle != NULL)); | |
1595 | ||
1596 | return (beep_handle)? 0 : 1; | |
1597 | } | |
1598 | ||
1599 | static int beep_read(char *p) | |
1600 | { | |
1601 | int len = 0; | |
1602 | ||
1603 | if (!beep_handle) | |
1604 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1605 | else { | |
1606 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
1607 | len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n"); | |
1608 | } | |
1609 | ||
1610 | return len; | |
1611 | } | |
1612 | ||
1613 | static int beep_write(char *buf) | |
1614 | { | |
1615 | char *cmd; | |
1616 | int beep_cmd; | |
1617 | ||
1618 | if (!beep_handle) | |
1619 | return -ENODEV; | |
1620 | ||
1621 | while ((cmd = next_cmd(&buf))) { | |
1622 | if (sscanf(cmd, "%u", &beep_cmd) == 1 && | |
1623 | beep_cmd >= 0 && beep_cmd <= 17) { | |
1624 | /* beep_cmd set */ | |
1625 | } else | |
1626 | return -EINVAL; | |
1627 | if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0)) | |
1628 | return -EIO; | |
1629 | } | |
1630 | ||
1631 | return 0; | |
1632 | } | |
1633 | ||
1634 | static struct ibm_struct beep_driver_data = { | |
1635 | .name = "beep", | |
1636 | .read = beep_read, | |
1637 | .write = beep_write, | |
1638 | }; | |
1639 | ||
1640 | /************************************************************************* | |
1641 | * Thermal subdriver | |
1642 | */ | |
1643 | ||
1644 | static enum thermal_access_mode thermal_read_mode; | |
1645 | ||
1646 | static int __init thermal_init(struct ibm_init_struct *iibm) | |
1647 | { | |
1648 | u8 t, ta1, ta2; | |
1649 | int i; | |
1650 | int acpi_tmp7; | |
1651 | ||
1652 | vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); | |
1653 | ||
1654 | acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); | |
1655 | ||
1656 | if (ibm_thinkpad_ec_found && experimental) { | |
1657 | /* | |
1658 | * Direct EC access mode: sensors at registers | |
1659 | * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for | |
1660 | * non-implemented, thermal sensors return 0x80 when | |
1661 | * not available | |
1662 | */ | |
1663 | ||
1664 | ta1 = ta2 = 0; | |
1665 | for (i = 0; i < 8; i++) { | |
1666 | if (likely(acpi_ec_read(0x78 + i, &t))) { | |
1667 | ta1 |= t; | |
1668 | } else { | |
1669 | ta1 = 0; | |
1670 | break; | |
1671 | } | |
1672 | if (likely(acpi_ec_read(0xC0 + i, &t))) { | |
1673 | ta2 |= t; | |
1674 | } else { | |
1675 | ta1 = 0; | |
1676 | break; | |
1677 | } | |
1678 | } | |
1679 | if (ta1 == 0) { | |
1680 | /* This is sheer paranoia, but we handle it anyway */ | |
1681 | if (acpi_tmp7) { | |
1682 | printk(IBM_ERR | |
1683 | "ThinkPad ACPI EC access misbehaving, " | |
1684 | "falling back to ACPI TMPx access mode\n"); | |
1685 | thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; | |
1686 | } else { | |
1687 | printk(IBM_ERR | |
1688 | "ThinkPad ACPI EC access misbehaving, " | |
1689 | "disabling thermal sensors access\n"); | |
1690 | thermal_read_mode = TPACPI_THERMAL_NONE; | |
1691 | } | |
1692 | } else { | |
1693 | thermal_read_mode = | |
1694 | (ta2 != 0) ? | |
1695 | TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; | |
1696 | } | |
1697 | } else if (acpi_tmp7) { | |
1698 | if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { | |
1699 | /* 600e/x, 770e, 770x */ | |
1700 | thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; | |
1701 | } else { | |
1702 | /* Standard ACPI TMPx access, max 8 sensors */ | |
1703 | thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; | |
1704 | } | |
1705 | } else { | |
1706 | /* temperatures not supported on 570, G4x, R30, R31, R32 */ | |
1707 | thermal_read_mode = TPACPI_THERMAL_NONE; | |
1708 | } | |
1709 | ||
1710 | vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", | |
1711 | str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), | |
1712 | thermal_read_mode); | |
1713 | ||
1714 | return (thermal_read_mode != TPACPI_THERMAL_NONE)? 0 : 1; | |
1715 | } | |
1716 | ||
1717 | static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) | |
1718 | { | |
1719 | int i, t; | |
1720 | s8 tmp; | |
1721 | char tmpi[] = "TMPi"; | |
1722 | ||
1723 | if (!s) | |
1724 | return -EINVAL; | |
1725 | ||
1726 | switch (thermal_read_mode) { | |
1727 | #if TPACPI_MAX_THERMAL_SENSORS >= 16 | |
1728 | case TPACPI_THERMAL_TPEC_16: | |
1729 | for (i = 0; i < 8; i++) { | |
1730 | if (!acpi_ec_read(0xC0 + i, &tmp)) | |
1731 | return -EIO; | |
1732 | s->temp[i + 8] = tmp * 1000; | |
1733 | } | |
1734 | /* fallthrough */ | |
1735 | #endif | |
1736 | case TPACPI_THERMAL_TPEC_8: | |
1737 | for (i = 0; i < 8; i++) { | |
1738 | if (!acpi_ec_read(0x78 + i, &tmp)) | |
1739 | return -EIO; | |
1740 | s->temp[i] = tmp * 1000; | |
1741 | } | |
1742 | return (thermal_read_mode == TPACPI_THERMAL_TPEC_16) ? 16 : 8; | |
1743 | ||
1744 | case TPACPI_THERMAL_ACPI_UPDT: | |
1745 | if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) | |
1746 | return -EIO; | |
1747 | for (i = 0; i < 8; i++) { | |
1748 | tmpi[3] = '0' + i; | |
1749 | if (!acpi_evalf(ec_handle, &t, tmpi, "d")) | |
1750 | return -EIO; | |
1751 | s->temp[i] = (t - 2732) * 100; | |
1752 | } | |
1753 | return 8; | |
1754 | ||
1755 | case TPACPI_THERMAL_ACPI_TMP07: | |
1756 | for (i = 0; i < 8; i++) { | |
1757 | tmpi[3] = '0' + i; | |
1758 | if (!acpi_evalf(ec_handle, &t, tmpi, "d")) | |
1759 | return -EIO; | |
1760 | s->temp[i] = t * 1000; | |
1761 | } | |
1762 | return 8; | |
1763 | ||
1764 | case TPACPI_THERMAL_NONE: | |
1765 | default: | |
1766 | return 0; | |
1767 | } | |
1768 | } | |
1769 | ||
1770 | static int thermal_read(char *p) | |
1771 | { | |
1772 | int len = 0; | |
1773 | int n, i; | |
1774 | struct ibm_thermal_sensors_struct t; | |
1775 | ||
1776 | n = thermal_get_sensors(&t); | |
1777 | if (unlikely(n < 0)) | |
1778 | return n; | |
1779 | ||
1780 | len += sprintf(p + len, "temperatures:\t"); | |
1781 | ||
1782 | if (n > 0) { | |
1783 | for (i = 0; i < (n - 1); i++) | |
1784 | len += sprintf(p + len, "%d ", t.temp[i] / 1000); | |
1785 | len += sprintf(p + len, "%d\n", t.temp[i] / 1000); | |
1786 | } else | |
1787 | len += sprintf(p + len, "not supported\n"); | |
1788 | ||
1789 | return len; | |
1790 | } | |
1791 | ||
1792 | static struct ibm_struct thermal_driver_data = { | |
1793 | .name = "thermal", | |
1794 | .read = thermal_read, | |
1795 | }; | |
1796 | ||
1797 | /************************************************************************* | |
1798 | * EC Dump subdriver | |
1799 | */ | |
1800 | ||
1801 | static u8 ecdump_regs[256]; | |
1802 | ||
1803 | static int ecdump_read(char *p) | |
1804 | { | |
1805 | int len = 0; | |
1806 | int i, j; | |
1807 | u8 v; | |
1808 | ||
1809 | len += sprintf(p + len, "EC " | |
1810 | " +00 +01 +02 +03 +04 +05 +06 +07" | |
1811 | " +08 +09 +0a +0b +0c +0d +0e +0f\n"); | |
1812 | for (i = 0; i < 256; i += 16) { | |
1813 | len += sprintf(p + len, "EC 0x%02x:", i); | |
1814 | for (j = 0; j < 16; j++) { | |
1815 | if (!acpi_ec_read(i + j, &v)) | |
1816 | break; | |
1817 | if (v != ecdump_regs[i + j]) | |
1818 | len += sprintf(p + len, " *%02x", v); | |
1819 | else | |
1820 | len += sprintf(p + len, " %02x", v); | |
1821 | ecdump_regs[i + j] = v; | |
1822 | } | |
1823 | len += sprintf(p + len, "\n"); | |
1824 | if (j != 16) | |
1825 | break; | |
1826 | } | |
1827 | ||
1828 | /* These are way too dangerous to advertise openly... */ | |
1829 | #if 0 | |
1830 | len += sprintf(p + len, "commands:\t0x<offset> 0x<value>" | |
1831 | " (<offset> is 00-ff, <value> is 00-ff)\n"); | |
1832 | len += sprintf(p + len, "commands:\t0x<offset> <value> " | |
1833 | " (<offset> is 00-ff, <value> is 0-255)\n"); | |
1834 | #endif | |
1835 | return len; | |
1836 | } | |
1837 | ||
1838 | static int ecdump_write(char *buf) | |
1839 | { | |
1840 | char *cmd; | |
1841 | int i, v; | |
1842 | ||
1843 | while ((cmd = next_cmd(&buf))) { | |
1844 | if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) { | |
1845 | /* i and v set */ | |
1846 | } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) { | |
1847 | /* i and v set */ | |
1848 | } else | |
1849 | return -EINVAL; | |
1850 | if (i >= 0 && i < 256 && v >= 0 && v < 256) { | |
1851 | if (!acpi_ec_write(i, v)) | |
1852 | return -EIO; | |
1853 | } else | |
1854 | return -EINVAL; | |
1855 | } | |
1856 | ||
1857 | return 0; | |
1858 | } | |
1859 | ||
1860 | static struct ibm_struct ecdump_driver_data = { | |
1861 | .name = "ecdump", | |
1862 | .read = ecdump_read, | |
1863 | .write = ecdump_write, | |
1864 | .flags.experimental = 1, | |
1865 | }; | |
1866 | ||
1867 | /************************************************************************* | |
1868 | * Backlight/brightness subdriver | |
1869 | */ | |
1870 | ||
1871 | static struct backlight_device *ibm_backlight_device = NULL; | |
1872 | ||
1873 | static struct backlight_ops ibm_backlight_data = { | |
1874 | .get_brightness = brightness_get, | |
1875 | .update_status = brightness_update_status, | |
1876 | }; | |
1877 | ||
1878 | static int __init brightness_init(struct ibm_init_struct *iibm) | |
1879 | { | |
1880 | int b; | |
1881 | ||
1882 | vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); | |
1883 | ||
1884 | b = brightness_get(NULL); | |
1885 | if (b < 0) | |
1886 | return b; | |
1887 | ||
1888 | ibm_backlight_device = backlight_device_register("ibm", NULL, NULL, | |
1889 | &ibm_backlight_data); | |
1890 | if (IS_ERR(ibm_backlight_device)) { | |
1891 | printk(IBM_ERR "Could not register backlight device\n"); | |
1892 | return PTR_ERR(ibm_backlight_device); | |
1893 | } | |
1894 | vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n"); | |
1895 | ||
1896 | ibm_backlight_device->props.max_brightness = 7; | |
1897 | ibm_backlight_device->props.brightness = b; | |
1898 | backlight_update_status(ibm_backlight_device); | |
1899 | ||
1900 | return 0; | |
1901 | } | |
1902 | ||
1903 | static void brightness_exit(void) | |
1904 | { | |
1905 | if (ibm_backlight_device) { | |
1906 | vdbg_printk(TPACPI_DBG_EXIT, | |
1907 | "calling backlight_device_unregister()\n"); | |
1908 | backlight_device_unregister(ibm_backlight_device); | |
1909 | ibm_backlight_device = NULL; | |
1910 | } | |
1911 | } | |
1912 | ||
1913 | static int brightness_update_status(struct backlight_device *bd) | |
1914 | { | |
1915 | return brightness_set( | |
1916 | (bd->props.fb_blank == FB_BLANK_UNBLANK && | |
1917 | bd->props.power == FB_BLANK_UNBLANK) ? | |
1918 | bd->props.brightness : 0); | |
1919 | } | |
1920 | ||
1921 | static int brightness_get(struct backlight_device *bd) | |
1922 | { | |
1923 | u8 level; | |
1924 | if (!acpi_ec_read(brightness_offset, &level)) | |
1925 | return -EIO; | |
1926 | ||
1927 | level &= 0x7; | |
1928 | ||
1929 | return level; | |
1930 | } | |
1931 | ||
1932 | static int brightness_set(int value) | |
1933 | { | |
1934 | int cmos_cmd, inc, i; | |
1935 | int current_value = brightness_get(NULL); | |
1936 | ||
1937 | value &= 7; | |
1938 | ||
1939 | cmos_cmd = value > current_value ? TP_CMOS_BRIGHTNESS_UP : TP_CMOS_BRIGHTNESS_DOWN; | |
1940 | inc = value > current_value ? 1 : -1; | |
1941 | for (i = current_value; i != value; i += inc) { | |
1942 | if (!cmos_eval(cmos_cmd)) | |
1943 | return -EIO; | |
1944 | if (!acpi_ec_write(brightness_offset, i + inc)) | |
1945 | return -EIO; | |
1946 | } | |
1947 | ||
1948 | return 0; | |
1949 | } | |
1950 | ||
1951 | static int brightness_read(char *p) | |
1952 | { | |
1953 | int len = 0; | |
1954 | int level; | |
1955 | ||
1956 | if ((level = brightness_get(NULL)) < 0) { | |
1957 | len += sprintf(p + len, "level:\t\tunreadable\n"); | |
1958 | } else { | |
1959 | len += sprintf(p + len, "level:\t\t%d\n", level & 0x7); | |
1960 | len += sprintf(p + len, "commands:\tup, down\n"); | |
1961 | len += sprintf(p + len, "commands:\tlevel <level>" | |
1962 | " (<level> is 0-7)\n"); | |
1963 | } | |
1964 | ||
1965 | return len; | |
1966 | } | |
1967 | ||
1968 | static int brightness_write(char *buf) | |
1969 | { | |
1970 | int level; | |
1971 | int new_level; | |
1972 | char *cmd; | |
1973 | ||
1974 | while ((cmd = next_cmd(&buf))) { | |
1975 | if ((level = brightness_get(NULL)) < 0) | |
1976 | return level; | |
1977 | level &= 7; | |
1978 | ||
1979 | if (strlencmp(cmd, "up") == 0) { | |
1980 | new_level = level == 7 ? 7 : level + 1; | |
1981 | } else if (strlencmp(cmd, "down") == 0) { | |
1982 | new_level = level == 0 ? 0 : level - 1; | |
1983 | } else if (sscanf(cmd, "level %d", &new_level) == 1 && | |
1984 | new_level >= 0 && new_level <= 7) { | |
1985 | /* new_level set */ | |
1986 | } else | |
1987 | return -EINVAL; | |
1988 | ||
1989 | brightness_set(new_level); | |
1990 | } | |
1991 | ||
1992 | return 0; | |
1993 | } | |
1994 | ||
1995 | static struct ibm_struct brightness_driver_data = { | |
1996 | .name = "brightness", | |
1997 | .read = brightness_read, | |
1998 | .write = brightness_write, | |
1999 | .exit = brightness_exit, | |
2000 | }; | |
2001 | ||
2002 | /************************************************************************* | |
2003 | * Volume subdriver | |
2004 | */ | |
2005 | ||
2006 | static int volume_read(char *p) | |
2007 | { | |
2008 | int len = 0; | |
2009 | u8 level; | |
2010 | ||
2011 | if (!acpi_ec_read(volume_offset, &level)) { | |
2012 | len += sprintf(p + len, "level:\t\tunreadable\n"); | |
2013 | } else { | |
2014 | len += sprintf(p + len, "level:\t\t%d\n", level & 0xf); | |
2015 | len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6)); | |
2016 | len += sprintf(p + len, "commands:\tup, down, mute\n"); | |
2017 | len += sprintf(p + len, "commands:\tlevel <level>" | |
2018 | " (<level> is 0-15)\n"); | |
2019 | } | |
2020 | ||
2021 | return len; | |
2022 | } | |
2023 | ||
2024 | static int volume_write(char *buf) | |
2025 | { | |
2026 | int cmos_cmd, inc, i; | |
2027 | u8 level, mute; | |
2028 | int new_level, new_mute; | |
2029 | char *cmd; | |
2030 | ||
2031 | while ((cmd = next_cmd(&buf))) { | |
2032 | if (!acpi_ec_read(volume_offset, &level)) | |
2033 | return -EIO; | |
2034 | new_mute = mute = level & 0x40; | |
2035 | new_level = level = level & 0xf; | |
2036 | ||
2037 | if (strlencmp(cmd, "up") == 0) { | |
2038 | if (mute) | |
2039 | new_mute = 0; | |
2040 | else | |
2041 | new_level = level == 15 ? 15 : level + 1; | |
2042 | } else if (strlencmp(cmd, "down") == 0) { | |
2043 | if (mute) | |
2044 | new_mute = 0; | |
2045 | else | |
2046 | new_level = level == 0 ? 0 : level - 1; | |
2047 | } else if (sscanf(cmd, "level %d", &new_level) == 1 && | |
2048 | new_level >= 0 && new_level <= 15) { | |
2049 | /* new_level set */ | |
2050 | } else if (strlencmp(cmd, "mute") == 0) { | |
2051 | new_mute = 0x40; | |
2052 | } else | |
2053 | return -EINVAL; | |
2054 | ||
2055 | if (new_level != level) { /* mute doesn't change */ | |
2056 | cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN; | |
2057 | inc = new_level > level ? 1 : -1; | |
2058 | ||
2059 | if (mute && (!cmos_eval(cmos_cmd) || | |
2060 | !acpi_ec_write(volume_offset, level))) | |
2061 | return -EIO; | |
2062 | ||
2063 | for (i = level; i != new_level; i += inc) | |
2064 | if (!cmos_eval(cmos_cmd) || | |
2065 | !acpi_ec_write(volume_offset, i + inc)) | |
2066 | return -EIO; | |
2067 | ||
2068 | if (mute && (!cmos_eval(TP_CMOS_VOLUME_MUTE) || | |
2069 | !acpi_ec_write(volume_offset, | |
2070 | new_level + mute))) | |
2071 | return -EIO; | |
2072 | } | |
2073 | ||
2074 | if (new_mute != mute) { /* level doesn't change */ | |
2075 | cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP; | |
2076 | ||
2077 | if (!cmos_eval(cmos_cmd) || | |
2078 | !acpi_ec_write(volume_offset, level + new_mute)) | |
2079 | return -EIO; | |
2080 | } | |
2081 | } | |
2082 | ||
2083 | return 0; | |
2084 | } | |
2085 | ||
2086 | static struct ibm_struct volume_driver_data = { | |
2087 | .name = "volume", | |
2088 | .read = volume_read, | |
2089 | .write = volume_write, | |
2090 | }; | |
2091 | ||
2092 | /************************************************************************* | |
2093 | * Fan subdriver | |
2094 | */ | |
2095 | ||
2096 | /* | |
2097 | * FAN ACCESS MODES | |
2098 | * | |
2099 | * TPACPI_FAN_RD_ACPI_GFAN: | |
2100 | * ACPI GFAN method: returns fan level | |
2101 | * | |
2102 | * see TPACPI_FAN_WR_ACPI_SFAN | |
2103 | * EC 0x2f (HFSP) not available if GFAN exists | |
2104 | * | |
2105 | * TPACPI_FAN_WR_ACPI_SFAN: | |
2106 | * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) | |
2107 | * | |
2108 | * EC 0x2f (HFSP) might be available *for reading*, but do not use | |
2109 | * it for writing. | |
2110 | * | |
2111 | * TPACPI_FAN_WR_TPEC: | |
2112 | * ThinkPad EC register 0x2f (HFSP): fan control loop mode | |
2113 | * Supported on almost all ThinkPads | |
2114 | * | |
2115 | * Fan speed changes of any sort (including those caused by the | |
2116 | * disengaged mode) are usually done slowly by the firmware as the | |
2117 | * maximum ammount of fan duty cycle change per second seems to be | |
2118 | * limited. | |
2119 | * | |
2120 | * Reading is not available if GFAN exists. | |
2121 | * Writing is not available if SFAN exists. | |
2122 | * | |
2123 | * Bits | |
2124 | * 7 automatic mode engaged; | |
2125 | * (default operation mode of the ThinkPad) | |
2126 | * fan level is ignored in this mode. | |
2127 | * 6 full speed mode (takes precedence over bit 7); | |
2128 | * not available on all thinkpads. May disable | |
2129 | * the tachometer while the fan controller ramps up | |
2130 | * the speed (which can take up to a few *minutes*). | |
2131 | * Speeds up fan to 100% duty-cycle, which is far above | |
2132 | * the standard RPM levels. It is not impossible that | |
2133 | * it could cause hardware damage. | |
2134 | * 5-3 unused in some models. Extra bits for fan level | |
2135 | * in others, but still useless as all values above | |
2136 | * 7 map to the same speed as level 7 in these models. | |
2137 | * 2-0 fan level (0..7 usually) | |
2138 | * 0x00 = stop | |
2139 | * 0x07 = max (set when temperatures critical) | |
2140 | * Some ThinkPads may have other levels, see | |
2141 | * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) | |
2142 | * | |
2143 | * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at | |
2144 | * boot. Apparently the EC does not intialize it, so unless ACPI DSDT | |
2145 | * does so, its initial value is meaningless (0x07). | |
2146 | * | |
2147 | * For firmware bugs, refer to: | |
2148 | * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues | |
2149 | * | |
2150 | * ---- | |
2151 | * | |
2152 | * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): | |
2153 | * Main fan tachometer reading (in RPM) | |
2154 | * | |
2155 | * This register is present on all ThinkPads with a new-style EC, and | |
2156 | * it is known not to be present on the A21m/e, and T22, as there is | |
2157 | * something else in offset 0x84 according to the ACPI DSDT. Other | |
2158 | * ThinkPads from this same time period (and earlier) probably lack the | |
2159 | * tachometer as well. | |
2160 | * | |
2161 | * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare | |
2162 | * was never fixed by IBM to report the EC firmware version string | |
2163 | * probably support the tachometer (like the early X models), so | |
2164 | * detecting it is quite hard. We need more data to know for sure. | |
2165 | * | |
2166 | * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings | |
2167 | * might result. | |
2168 | * | |
2169 | * FIRMWARE BUG: may go stale while the EC is switching to full speed | |
2170 | * mode. | |
2171 | * | |
2172 | * For firmware bugs, refer to: | |
2173 | * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues | |
2174 | * | |
2175 | * TPACPI_FAN_WR_ACPI_FANS: | |
2176 | * ThinkPad X31, X40, X41. Not available in the X60. | |
2177 | * | |
2178 | * FANS ACPI handle: takes three arguments: low speed, medium speed, | |
2179 | * high speed. ACPI DSDT seems to map these three speeds to levels | |
2180 | * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH | |
2181 | * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") | |
2182 | * | |
2183 | * The speeds are stored on handles | |
2184 | * (FANA:FAN9), (FANC:FANB), (FANE:FAND). | |
2185 | * | |
2186 | * There are three default speed sets, acessible as handles: | |
2187 | * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H | |
2188 | * | |
2189 | * ACPI DSDT switches which set is in use depending on various | |
2190 | * factors. | |
2191 | * | |
2192 | * TPACPI_FAN_WR_TPEC is also available and should be used to | |
2193 | * command the fan. The X31/X40/X41 seems to have 8 fan levels, | |
2194 | * but the ACPI tables just mention level 7. | |
2195 | */ | |
2196 | ||
2197 | static enum fan_status_access_mode fan_status_access_mode; | |
2198 | static enum fan_control_access_mode fan_control_access_mode; | |
2199 | static enum fan_control_commands fan_control_commands; | |
2200 | ||
2201 | static u8 fan_control_initial_status; | |
2202 | ||
2203 | static void fan_watchdog_fire(struct work_struct *ignored); | |
2204 | static int fan_watchdog_maxinterval; | |
2205 | static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); | |
2206 | ||
2207 | IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ | |
2208 | IBM_HANDLE(gfan, ec, "GFAN", /* 570 */ | |
2209 | "\\FSPD", /* 600e/x, 770e, 770x */ | |
2210 | ); /* all others */ | |
2211 | IBM_HANDLE(sfan, ec, "SFAN", /* 570 */ | |
2212 | "JFNS", /* 770x-JL */ | |
2213 | ); /* all others */ | |
2214 | ||
2215 | static int __init fan_init(struct ibm_init_struct *iibm) | |
2216 | { | |
2217 | vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n"); | |
2218 | ||
2219 | fan_status_access_mode = TPACPI_FAN_NONE; | |
2220 | fan_control_access_mode = TPACPI_FAN_WR_NONE; | |
2221 | fan_control_commands = 0; | |
2222 | fan_watchdog_maxinterval = 0; | |
2223 | tp_features.fan_ctrl_status_undef = 0; | |
2224 | ||
2225 | IBM_ACPIHANDLE_INIT(fans); | |
2226 | IBM_ACPIHANDLE_INIT(gfan); | |
2227 | IBM_ACPIHANDLE_INIT(sfan); | |
2228 | ||
2229 | if (gfan_handle) { | |
2230 | /* 570, 600e/x, 770e, 770x */ | |
2231 | fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; | |
2232 | } else { | |
2233 | /* all other ThinkPads: note that even old-style | |
2234 | * ThinkPad ECs supports the fan control register */ | |
2235 | if (likely(acpi_ec_read(fan_status_offset, | |
2236 | &fan_control_initial_status))) { | |
2237 | fan_status_access_mode = TPACPI_FAN_RD_TPEC; | |
2238 | ||
2239 | /* In some ThinkPads, neither the EC nor the ACPI | |
2240 | * DSDT initialize the fan status, and it ends up | |
2241 | * being set to 0x07 when it *could* be either | |
2242 | * 0x07 or 0x80. | |
2243 | * | |
2244 | * Enable for TP-1Y (T43), TP-78 (R51e), | |
2245 | * TP-76 (R52), TP-70 (T43, R52), which are known | |
2246 | * to be buggy. */ | |
2247 | if (fan_control_initial_status == 0x07 && | |
2248 | ibm_thinkpad_ec_found && | |
2249 | ((ibm_thinkpad_ec_found[0] == '1' && | |
2250 | ibm_thinkpad_ec_found[1] == 'Y') || | |
2251 | (ibm_thinkpad_ec_found[0] == '7' && | |
2252 | (ibm_thinkpad_ec_found[1] == '6' || | |
2253 | ibm_thinkpad_ec_found[1] == '8' || | |
2254 | ibm_thinkpad_ec_found[1] == '0')) | |
2255 | )) { | |
2256 | printk(IBM_NOTICE | |
2257 | "fan_init: initial fan status is " | |
2258 | "unknown, assuming it is in auto " | |
2259 | "mode\n"); | |
2260 | tp_features.fan_ctrl_status_undef = 1; | |
2261 | } | |
2262 | } else { | |
2263 | printk(IBM_ERR | |
2264 | "ThinkPad ACPI EC access misbehaving, " | |
2265 | "fan status and control unavailable\n"); | |
2266 | return 1; | |
2267 | } | |
2268 | } | |
2269 | ||
2270 | if (sfan_handle) { | |
2271 | /* 570, 770x-JL */ | |
2272 | fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; | |
2273 | fan_control_commands |= | |
2274 | TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; | |
2275 | } else { | |
2276 | if (!gfan_handle) { | |
2277 | /* gfan without sfan means no fan control */ | |
2278 | /* all other models implement TP EC 0x2f control */ | |
2279 | ||
2280 | if (fans_handle) { | |
2281 | /* X31, X40, X41 */ | |
2282 | fan_control_access_mode = | |
2283 | TPACPI_FAN_WR_ACPI_FANS; | |
2284 | fan_control_commands |= | |
2285 | TPACPI_FAN_CMD_SPEED | | |
2286 | TPACPI_FAN_CMD_LEVEL | | |
2287 | TPACPI_FAN_CMD_ENABLE; | |
2288 | } else { | |
2289 | fan_control_access_mode = TPACPI_FAN_WR_TPEC; | |
2290 | fan_control_commands |= | |
2291 | TPACPI_FAN_CMD_LEVEL | | |
2292 | TPACPI_FAN_CMD_ENABLE; | |
2293 | } | |
2294 | } | |
2295 | } | |
2296 | ||
2297 | vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n", | |
2298 | str_supported(fan_status_access_mode != TPACPI_FAN_NONE || | |
2299 | fan_control_access_mode != TPACPI_FAN_WR_NONE), | |
2300 | fan_status_access_mode, fan_control_access_mode); | |
2301 | ||
2302 | return (fan_status_access_mode != TPACPI_FAN_NONE || | |
2303 | fan_control_access_mode != TPACPI_FAN_WR_NONE)? | |
2304 | 0 : 1; | |
2305 | } | |
2306 | ||
2307 | static int fan_get_status(u8 *status) | |
2308 | { | |
2309 | u8 s; | |
2310 | ||
2311 | /* TODO: | |
2312 | * Add TPACPI_FAN_RD_ACPI_FANS ? */ | |
2313 | ||
2314 | switch (fan_status_access_mode) { | |
2315 | case TPACPI_FAN_RD_ACPI_GFAN: | |
2316 | /* 570, 600e/x, 770e, 770x */ | |
2317 | ||
2318 | if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d"))) | |
2319 | return -EIO; | |
2320 | ||
2321 | if (likely(status)) | |
2322 | *status = s & 0x07; | |
2323 | ||
2324 | break; | |
2325 | ||
2326 | case TPACPI_FAN_RD_TPEC: | |
2327 | /* all except 570, 600e/x, 770e, 770x */ | |
2328 | if (unlikely(!acpi_ec_read(fan_status_offset, &s))) | |
2329 | return -EIO; | |
2330 | ||
2331 | if (likely(status)) | |
2332 | *status = s; | |
2333 | ||
2334 | break; | |
2335 | ||
2336 | default: | |
2337 | return -ENXIO; | |
2338 | } | |
2339 | ||
2340 | return 0; | |
2341 | } | |
2342 | ||
2343 | static void fan_exit(void) | |
2344 | { | |
2345 | vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending watchdogs\n"); | |
2346 | cancel_delayed_work(&fan_watchdog_task); | |
2347 | flush_scheduled_work(); | |
2348 | } | |
2349 | ||
2350 | static int fan_get_speed(unsigned int *speed) | |
2351 | { | |
2352 | u8 hi, lo; | |
2353 | ||
2354 | switch (fan_status_access_mode) { | |
2355 | case TPACPI_FAN_RD_TPEC: | |
2356 | /* all except 570, 600e/x, 770e, 770x */ | |
2357 | if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || | |
2358 | !acpi_ec_read(fan_rpm_offset + 1, &hi))) | |
2359 | return -EIO; | |
2360 | ||
2361 | if (likely(speed)) | |
2362 | *speed = (hi << 8) | lo; | |
2363 | ||
2364 | break; | |
2365 | ||
2366 | default: | |
2367 | return -ENXIO; | |
2368 | } | |
2369 | ||
2370 | return 0; | |
2371 | } | |
2372 | ||
2373 | static void fan_watchdog_fire(struct work_struct *ignored) | |
2374 | { | |
2375 | printk(IBM_NOTICE "fan watchdog: enabling fan\n"); | |
2376 | if (fan_set_enable()) { | |
2377 | printk(IBM_ERR "fan watchdog: error while enabling fan\n"); | |
2378 | /* reschedule for later */ | |
2379 | fan_watchdog_reset(); | |
2380 | } | |
2381 | } | |
2382 | ||
2383 | static void fan_watchdog_reset(void) | |
2384 | { | |
2385 | static int fan_watchdog_active = 0; | |
2386 | ||
2387 | if (fan_watchdog_active) | |
2388 | cancel_delayed_work(&fan_watchdog_task); | |
2389 | ||
2390 | if (fan_watchdog_maxinterval > 0) { | |
2391 | fan_watchdog_active = 1; | |
2392 | if (!schedule_delayed_work(&fan_watchdog_task, | |
2393 | msecs_to_jiffies(fan_watchdog_maxinterval | |
2394 | * 1000))) { | |
2395 | printk(IBM_ERR "failed to schedule the fan watchdog, " | |
2396 | "watchdog will not trigger\n"); | |
2397 | } | |
2398 | } else | |
2399 | fan_watchdog_active = 0; | |
2400 | } | |
2401 | ||
2402 | static int fan_set_level(int level) | |
2403 | { | |
2404 | switch (fan_control_access_mode) { | |
2405 | case TPACPI_FAN_WR_ACPI_SFAN: | |
2406 | if (level >= 0 && level <= 7) { | |
2407 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) | |
2408 | return -EIO; | |
2409 | } else | |
2410 | return -EINVAL; | |
2411 | break; | |
2412 | ||
2413 | case TPACPI_FAN_WR_ACPI_FANS: | |
2414 | case TPACPI_FAN_WR_TPEC: | |
2415 | if ((level != TP_EC_FAN_AUTO) && | |
2416 | (level != TP_EC_FAN_FULLSPEED) && | |
2417 | ((level < 0) || (level > 7))) | |
2418 | return -EINVAL; | |
2419 | ||
2420 | if (!acpi_ec_write(fan_status_offset, level)) | |
2421 | return -EIO; | |
2422 | else | |
2423 | tp_features.fan_ctrl_status_undef = 0; | |
2424 | break; | |
2425 | ||
2426 | default: | |
2427 | return -ENXIO; | |
2428 | } | |
2429 | return 0; | |
2430 | } | |
2431 | ||
2432 | static int fan_set_enable(void) | |
2433 | { | |
2434 | u8 s; | |
2435 | int rc; | |
2436 | ||
2437 | switch (fan_control_access_mode) { | |
2438 | case TPACPI_FAN_WR_ACPI_FANS: | |
2439 | case TPACPI_FAN_WR_TPEC: | |
2440 | if ((rc = fan_get_status(&s)) < 0) | |
2441 | return rc; | |
2442 | ||
2443 | /* Don't go out of emergency fan mode */ | |
2444 | if (s != 7) | |
2445 | s = TP_EC_FAN_AUTO; | |
2446 | ||
2447 | if (!acpi_ec_write(fan_status_offset, s)) | |
2448 | return -EIO; | |
2449 | else | |
2450 | tp_features.fan_ctrl_status_undef = 0; | |
2451 | break; | |
2452 | ||
2453 | case TPACPI_FAN_WR_ACPI_SFAN: | |
2454 | if ((rc = fan_get_status(&s)) < 0) | |
2455 | return rc; | |
2456 | ||
2457 | s &= 0x07; | |
2458 | ||
2459 | /* Set fan to at least level 4 */ | |
2460 | if (s < 4) | |
2461 | s = 4; | |
2462 | ||
2463 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) | |
2464 | return -EIO; | |
2465 | break; | |
2466 | ||
2467 | default: | |
2468 | return -ENXIO; | |
2469 | } | |
2470 | return 0; | |
2471 | } | |
2472 | ||
2473 | static int fan_set_disable(void) | |
2474 | { | |
2475 | switch (fan_control_access_mode) { | |
2476 | case TPACPI_FAN_WR_ACPI_FANS: | |
2477 | case TPACPI_FAN_WR_TPEC: | |
2478 | if (!acpi_ec_write(fan_status_offset, 0x00)) | |
2479 | return -EIO; | |
2480 | else | |
2481 | tp_features.fan_ctrl_status_undef = 0; | |
2482 | break; | |
2483 | ||
2484 | case TPACPI_FAN_WR_ACPI_SFAN: | |
2485 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) | |
2486 | return -EIO; | |
2487 | break; | |
2488 | ||
2489 | default: | |
2490 | return -ENXIO; | |
2491 | } | |
2492 | return 0; | |
2493 | } | |
2494 | ||
2495 | static int fan_set_speed(int speed) | |
2496 | { | |
2497 | switch (fan_control_access_mode) { | |
2498 | case TPACPI_FAN_WR_ACPI_FANS: | |
2499 | if (speed >= 0 && speed <= 65535) { | |
2500 | if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", | |
2501 | speed, speed, speed)) | |
2502 | return -EIO; | |
2503 | } else | |
2504 | return -EINVAL; | |
2505 | break; | |
2506 | ||
2507 | default: | |
2508 | return -ENXIO; | |
2509 | } | |
2510 | return 0; | |
2511 | } | |
2512 | ||
2513 | static int fan_read(char *p) | |
2514 | { | |
2515 | int len = 0; | |
2516 | int rc; | |
2517 | u8 status; | |
2518 | unsigned int speed = 0; | |
2519 | ||
2520 | switch (fan_status_access_mode) { | |
2521 | case TPACPI_FAN_RD_ACPI_GFAN: | |
2522 | /* 570, 600e/x, 770e, 770x */ | |
2523 | if ((rc = fan_get_status(&status)) < 0) | |
2524 | return rc; | |
2525 | ||
2526 | len += sprintf(p + len, "status:\t\t%s\n" | |
2527 | "level:\t\t%d\n", | |
2528 | (status != 0) ? "enabled" : "disabled", status); | |
2529 | break; | |
2530 | ||
2531 | case TPACPI_FAN_RD_TPEC: | |
2532 | /* all except 570, 600e/x, 770e, 770x */ | |
2533 | if ((rc = fan_get_status(&status)) < 0) | |
2534 | return rc; | |
2535 | ||
2536 | if (unlikely(tp_features.fan_ctrl_status_undef)) { | |
2537 | if (status != fan_control_initial_status) | |
2538 | tp_features.fan_ctrl_status_undef = 0; | |
2539 | else | |
2540 | /* Return most likely status. In fact, it | |
2541 | * might be the only possible status */ | |
2542 | status = TP_EC_FAN_AUTO; | |
2543 | } | |
2544 | ||
2545 | len += sprintf(p + len, "status:\t\t%s\n", | |
2546 | (status != 0) ? "enabled" : "disabled"); | |
2547 | ||
2548 | if ((rc = fan_get_speed(&speed)) < 0) | |
2549 | return rc; | |
2550 | ||
2551 | len += sprintf(p + len, "speed:\t\t%d\n", speed); | |
2552 | ||
2553 | if (status & TP_EC_FAN_FULLSPEED) | |
2554 | /* Disengaged mode takes precedence */ | |
2555 | len += sprintf(p + len, "level:\t\tdisengaged\n"); | |
2556 | else if (status & TP_EC_FAN_AUTO) | |
2557 | len += sprintf(p + len, "level:\t\tauto\n"); | |
2558 | else | |
2559 | len += sprintf(p + len, "level:\t\t%d\n", status); | |
2560 | break; | |
2561 | ||
2562 | case TPACPI_FAN_NONE: | |
2563 | default: | |
2564 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
2565 | } | |
2566 | ||
2567 | if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { | |
2568 | len += sprintf(p + len, "commands:\tlevel <level>"); | |
2569 | ||
2570 | switch (fan_control_access_mode) { | |
2571 | case TPACPI_FAN_WR_ACPI_SFAN: | |
2572 | len += sprintf(p + len, " (<level> is 0-7)\n"); | |
2573 | break; | |
2574 | ||
2575 | default: | |
2576 | len += sprintf(p + len, " (<level> is 0-7, " | |
2577 | "auto, disengaged)\n"); | |
2578 | break; | |
2579 | } | |
2580 | } | |
2581 | ||
2582 | if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) | |
2583 | len += sprintf(p + len, "commands:\tenable, disable\n" | |
2584 | "commands:\twatchdog <timeout> (<timeout> is 0 (off), " | |
2585 | "1-120 (seconds))\n"); | |
2586 | ||
2587 | if (fan_control_commands & TPACPI_FAN_CMD_SPEED) | |
2588 | len += sprintf(p + len, "commands:\tspeed <speed>" | |
2589 | " (<speed> is 0-65535)\n"); | |
2590 | ||
2591 | return len; | |
2592 | } | |
2593 | ||
2594 | static int fan_write_cmd_level(const char *cmd, int *rc) | |
2595 | { | |
2596 | int level; | |
2597 | ||
2598 | if (strlencmp(cmd, "level auto") == 0) | |
2599 | level = TP_EC_FAN_AUTO; | |
2600 | else if (strlencmp(cmd, "level disengaged") == 0) | |
2601 | level = TP_EC_FAN_FULLSPEED; | |
2602 | else if (sscanf(cmd, "level %d", &level) != 1) | |
2603 | return 0; | |
2604 | ||
2605 | if ((*rc = fan_set_level(level)) == -ENXIO) | |
2606 | printk(IBM_ERR "level command accepted for unsupported " | |
2607 | "access mode %d", fan_control_access_mode); | |
2608 | ||
2609 | return 1; | |
2610 | } | |
2611 | ||
2612 | static int fan_write_cmd_enable(const char *cmd, int *rc) | |
2613 | { | |
2614 | if (strlencmp(cmd, "enable") != 0) | |
2615 | return 0; | |
2616 | ||
2617 | if ((*rc = fan_set_enable()) == -ENXIO) | |
2618 | printk(IBM_ERR "enable command accepted for unsupported " | |
2619 | "access mode %d", fan_control_access_mode); | |
2620 | ||
2621 | return 1; | |
2622 | } | |
2623 | ||
2624 | static int fan_write_cmd_disable(const char *cmd, int *rc) | |
2625 | { | |
2626 | if (strlencmp(cmd, "disable") != 0) | |
2627 | return 0; | |
2628 | ||
2629 | if ((*rc = fan_set_disable()) == -ENXIO) | |
2630 | printk(IBM_ERR "disable command accepted for unsupported " | |
2631 | "access mode %d", fan_control_access_mode); | |
2632 | ||
2633 | return 1; | |
2634 | } | |
2635 | ||
2636 | static int fan_write_cmd_speed(const char *cmd, int *rc) | |
2637 | { | |
2638 | int speed; | |
2639 | ||
2640 | /* TODO: | |
2641 | * Support speed <low> <medium> <high> ? */ | |
2642 | ||
2643 | if (sscanf(cmd, "speed %d", &speed) != 1) | |
2644 | return 0; | |
2645 | ||
2646 | if ((*rc = fan_set_speed(speed)) == -ENXIO) | |
2647 | printk(IBM_ERR "speed command accepted for unsupported " | |
2648 | "access mode %d", fan_control_access_mode); | |
2649 | ||
2650 | return 1; | |
2651 | } | |
2652 | ||
2653 | static int fan_write_cmd_watchdog(const char *cmd, int *rc) | |
2654 | { | |
2655 | int interval; | |
2656 | ||
2657 | if (sscanf(cmd, "watchdog %d", &interval) != 1) | |
2658 | return 0; | |
2659 | ||
2660 | if (interval < 0 || interval > 120) | |
2661 | *rc = -EINVAL; | |
2662 | else | |
2663 | fan_watchdog_maxinterval = interval; | |
2664 | ||
2665 | return 1; | |
2666 | } | |
2667 | ||
2668 | static int fan_write(char *buf) | |
2669 | { | |
2670 | char *cmd; | |
2671 | int rc = 0; | |
2672 | ||
2673 | while (!rc && (cmd = next_cmd(&buf))) { | |
2674 | if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && | |
2675 | fan_write_cmd_level(cmd, &rc)) && | |
2676 | !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && | |
2677 | (fan_write_cmd_enable(cmd, &rc) || | |
2678 | fan_write_cmd_disable(cmd, &rc) || | |
2679 | fan_write_cmd_watchdog(cmd, &rc))) && | |
2680 | !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && | |
2681 | fan_write_cmd_speed(cmd, &rc)) | |
2682 | ) | |
2683 | rc = -EINVAL; | |
2684 | else if (!rc) | |
2685 | fan_watchdog_reset(); | |
2686 | } | |
2687 | ||
2688 | return rc; | |
2689 | } | |
2690 | ||
2691 | static struct ibm_struct fan_driver_data = { | |
2692 | .name = "fan", | |
2693 | .read = fan_read, | |
2694 | .write = fan_write, | |
2695 | .exit = fan_exit, | |
2696 | .flags.experimental = 1, | |
2697 | }; | |
2698 | ||
2699 | /**************************************************************************** | |
2700 | **************************************************************************** | |
2701 | * | |
2702 | * Infrastructure | |
2703 | * | |
2704 | **************************************************************************** | |
2705 | ****************************************************************************/ | |
2706 | ||
2707 | /* /proc support */ | |
2708 | static struct proc_dir_entry *proc_dir = NULL; | |
2709 | ||
2710 | /* Subdriver registry */ | |
2711 | static LIST_HEAD(tpacpi_all_drivers); | |
2712 | ||
2713 | ||
2714 | /* | |
2715 | * Module and infrastructure proble, init and exit handling | |
2716 | */ | |
2717 | ||
2718 | #ifdef CONFIG_THINKPAD_ACPI_DEBUG | |
2719 | static const char * __init str_supported(int is_supported) | |
2720 | { | |
2721 | static char text_unsupported[] __initdata = "not supported"; | |
2722 | ||
2723 | return (is_supported)? &text_unsupported[4] : &text_unsupported[0]; | |
2724 | } | |
2725 | #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ | |
2726 | ||
2727 | static int __init ibm_init(struct ibm_init_struct *iibm) | |
2728 | { | |
2729 | int ret; | |
2730 | struct ibm_struct *ibm = iibm->data; | |
2731 | struct proc_dir_entry *entry; | |
2732 | ||
2733 | BUG_ON(ibm == NULL); | |
2734 | ||
2735 | INIT_LIST_HEAD(&ibm->all_drivers); | |
2736 | ||
2737 | if (ibm->flags.experimental && !experimental) | |
2738 | return 0; | |
2739 | ||
2740 | dbg_printk(TPACPI_DBG_INIT, | |
2741 | "probing for %s\n", ibm->name); | |
2742 | ||
2743 | if (iibm->init) { | |
2744 | ret = iibm->init(iibm); | |
2745 | if (ret > 0) | |
2746 | return 0; /* probe failed */ | |
2747 | if (ret) | |
2748 | return ret; | |
2749 | ||
2750 | ibm->flags.init_called = 1; | |
2751 | } | |
2752 | ||
2753 | if (ibm->acpi) { | |
2754 | if (ibm->acpi->hid) { | |
2755 | ret = register_tpacpi_subdriver(ibm); | |
2756 | if (ret) | |
2757 | goto err_out; | |
2758 | } | |
2759 | ||
2760 | if (ibm->acpi->notify) { | |
2761 | ret = setup_acpi_notify(ibm); | |
2762 | if (ret == -ENODEV) { | |
2763 | printk(IBM_NOTICE "disabling subdriver %s\n", | |
2764 | ibm->name); | |
2765 | ret = 0; | |
2766 | goto err_out; | |
2767 | } | |
2768 | if (ret < 0) | |
2769 | goto err_out; | |
2770 | } | |
2771 | } | |
2772 | ||
2773 | dbg_printk(TPACPI_DBG_INIT, | |
2774 | "%s installed\n", ibm->name); | |
2775 | ||
2776 | if (ibm->read) { | |
2777 | entry = create_proc_entry(ibm->name, | |
2778 | S_IFREG | S_IRUGO | S_IWUSR, | |
2779 | proc_dir); | |
2780 | if (!entry) { | |
2781 | printk(IBM_ERR "unable to create proc entry %s\n", | |
2782 | ibm->name); | |
2783 | ret = -ENODEV; | |
2784 | goto err_out; | |
2785 | } | |
2786 | entry->owner = THIS_MODULE; | |
2787 | entry->data = ibm; | |
2788 | entry->read_proc = &dispatch_procfs_read; | |
2789 | if (ibm->write) | |
2790 | entry->write_proc = &dispatch_procfs_write; | |
2791 | ibm->flags.proc_created = 1; | |
2792 | } | |
2793 | ||
2794 | list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); | |
2795 | ||
2796 | return 0; | |
2797 | ||
2798 | err_out: | |
2799 | dbg_printk(TPACPI_DBG_INIT, | |
2800 | "%s: at error exit path with result %d\n", | |
2801 | ibm->name, ret); | |
2802 | ||
2803 | ibm_exit(ibm); | |
2804 | return (ret < 0)? ret : 0; | |
2805 | } | |
2806 | ||
2807 | static void ibm_exit(struct ibm_struct *ibm) | |
2808 | { | |
2809 | dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); | |
2810 | ||
2811 | list_del_init(&ibm->all_drivers); | |
2812 | ||
2813 | if (ibm->flags.acpi_notify_installed) { | |
2814 | dbg_printk(TPACPI_DBG_EXIT, | |
2815 | "%s: acpi_remove_notify_handler\n", ibm->name); | |
2816 | BUG_ON(!ibm->acpi); | |
2817 | acpi_remove_notify_handler(*ibm->acpi->handle, | |
2818 | ibm->acpi->type, | |
2819 | dispatch_acpi_notify); | |
2820 | ibm->flags.acpi_notify_installed = 0; | |
2821 | ibm->flags.acpi_notify_installed = 0; | |
2822 | } | |
2823 | ||
2824 | if (ibm->flags.proc_created) { | |
2825 | dbg_printk(TPACPI_DBG_EXIT, | |
2826 | "%s: remove_proc_entry\n", ibm->name); | |
2827 | remove_proc_entry(ibm->name, proc_dir); | |
2828 | ibm->flags.proc_created = 0; | |
2829 | } | |
2830 | ||
2831 | if (ibm->flags.acpi_driver_registered) { | |
2832 | dbg_printk(TPACPI_DBG_EXIT, | |
2833 | "%s: acpi_bus_unregister_driver\n", ibm->name); | |
2834 | BUG_ON(!ibm->acpi); | |
2835 | acpi_bus_unregister_driver(ibm->acpi->driver); | |
2836 | kfree(ibm->acpi->driver); | |
2837 | ibm->acpi->driver = NULL; | |
2838 | ibm->flags.acpi_driver_registered = 0; | |
2839 | } | |
2840 | ||
2841 | if (ibm->flags.init_called && ibm->exit) { | |
2842 | ibm->exit(); | |
2843 | ibm->flags.init_called = 0; | |
2844 | } | |
2845 | ||
2846 | dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); | |
2847 | } | |
2848 | ||
2849 | /* Probing */ | |
2850 | ||
2851 | static char *ibm_thinkpad_ec_found = NULL; | |
2852 | ||
2853 | static char* __init check_dmi_for_ec(void) | |
2854 | { | |
2855 | struct dmi_device *dev = NULL; | |
2856 | char ec_fw_string[18]; | |
2857 | ||
2858 | /* | |
2859 | * ThinkPad T23 or newer, A31 or newer, R50e or newer, | |
2860 | * X32 or newer, all Z series; Some models must have an | |
2861 | * up-to-date BIOS or they will not be detected. | |
2862 | * | |
2863 | * See http://thinkwiki.org/wiki/List_of_DMI_IDs | |
2864 | */ | |
2865 | while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { | |
2866 | if (sscanf(dev->name, | |
2867 | "IBM ThinkPad Embedded Controller -[%17c", | |
2868 | ec_fw_string) == 1) { | |
2869 | ec_fw_string[sizeof(ec_fw_string) - 1] = 0; | |
2870 | ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; | |
2871 | return kstrdup(ec_fw_string, GFP_KERNEL); | |
2872 | } | |
2873 | } | |
2874 | return NULL; | |
2875 | } | |
2876 | ||
2877 | static int __init probe_for_thinkpad(void) | |
2878 | { | |
2879 | int is_thinkpad; | |
2880 | ||
2881 | if (acpi_disabled) | |
2882 | return -ENODEV; | |
2883 | ||
2884 | /* | |
2885 | * Non-ancient models have better DMI tagging, but very old models | |
2886 | * don't. | |
2887 | */ | |
2888 | is_thinkpad = dmi_name_in_vendors("ThinkPad"); | |
2889 | ||
2890 | /* ec is required because many other handles are relative to it */ | |
2891 | IBM_ACPIHANDLE_INIT(ec); | |
2892 | if (!ec_handle) { | |
2893 | if (is_thinkpad) | |
2894 | printk(IBM_ERR | |
2895 | "Not yet supported ThinkPad detected!\n"); | |
2896 | return -ENODEV; | |
2897 | } | |
2898 | ||
2899 | /* | |
2900 | * Risks a regression on very old machines, but reduces potential | |
2901 | * false positives a damn great deal | |
2902 | */ | |
2903 | if (!is_thinkpad) | |
2904 | is_thinkpad = dmi_name_in_vendors("IBM"); | |
2905 | ||
2906 | if (!is_thinkpad && !force_load) | |
2907 | return -ENODEV; | |
2908 | ||
2909 | return 0; | |
2910 | } | |
2911 | ||
2912 | ||
2913 | /* Module init, exit, parameters */ | |
2914 | ||
2915 | static struct ibm_init_struct ibms_init[] __initdata = { | |
2916 | { | |
2917 | .init = thinkpad_acpi_driver_init, | |
2918 | .data = &thinkpad_acpi_driver_data, | |
2919 | }, | |
2920 | { | |
2921 | .init = hotkey_init, | |
2922 | .data = &hotkey_driver_data, | |
2923 | }, | |
2924 | { | |
2925 | .init = bluetooth_init, | |
2926 | .data = &bluetooth_driver_data, | |
2927 | }, | |
2928 | { | |
2929 | .init = wan_init, | |
2930 | .data = &wan_driver_data, | |
2931 | }, | |
2932 | { | |
2933 | .init = video_init, | |
2934 | .data = &video_driver_data, | |
2935 | }, | |
2936 | { | |
2937 | .init = light_init, | |
2938 | .data = &light_driver_data, | |
2939 | }, | |
2940 | #ifdef CONFIG_THINKPAD_ACPI_DOCK | |
2941 | { | |
2942 | .init = dock_init, | |
2943 | .data = &dock_driver_data[0], | |
2944 | }, | |
2945 | { | |
2946 | .data = &dock_driver_data[1], | |
2947 | }, | |
2948 | #endif | |
2949 | #ifdef CONFIG_THINKPAD_ACPI_BAY | |
2950 | { | |
2951 | .init = bay_init, | |
2952 | .data = &bay_driver_data, | |
2953 | }, | |
2954 | #endif | |
2955 | { | |
2956 | .init = cmos_init, | |
2957 | .data = &cmos_driver_data, | |
2958 | }, | |
2959 | { | |
2960 | .init = led_init, | |
2961 | .data = &led_driver_data, | |
2962 | }, | |
2963 | { | |
2964 | .init = beep_init, | |
2965 | .data = &beep_driver_data, | |
2966 | }, | |
2967 | { | |
2968 | .init = thermal_init, | |
2969 | .data = &thermal_driver_data, | |
2970 | }, | |
2971 | { | |
2972 | .data = &ecdump_driver_data, | |
2973 | }, | |
2974 | { | |
2975 | .init = brightness_init, | |
2976 | .data = &brightness_driver_data, | |
2977 | }, | |
2978 | { | |
2979 | .data = &volume_driver_data, | |
2980 | }, | |
2981 | { | |
2982 | .init = fan_init, | |
2983 | .data = &fan_driver_data, | |
2984 | }, | |
2985 | }; | |
2986 | ||
2987 | static int __init set_ibm_param(const char *val, struct kernel_param *kp) | |
2988 | { | |
2989 | unsigned int i; | |
2990 | struct ibm_struct *ibm; | |
2991 | ||
2992 | for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { | |
2993 | ibm = ibms_init[i].data; | |
2994 | BUG_ON(ibm == NULL); | |
2995 | ||
2996 | if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { | |
2997 | if (strlen(val) > sizeof(ibms_init[i].param) - 2) | |
2998 | return -ENOSPC; | |
2999 | strcpy(ibms_init[i].param, val); | |
3000 | strcat(ibms_init[i].param, ","); | |
3001 | return 0; | |
3002 | } | |
3003 | } | |
3004 | ||
3005 | return -EINVAL; | |
3006 | } | |
3007 | ||
3008 | static int experimental; | |
3009 | module_param(experimental, int, 0); | |
3010 | ||
3011 | static u32 dbg_level; | |
3012 | module_param_named(debug, dbg_level, uint, 0); | |
3013 | ||
3014 | static int force_load; | |
3015 | module_param(force_load, int, 0); | |
3016 | ||
3017 | #define IBM_PARAM(feature) \ | |
3018 | module_param_call(feature, set_ibm_param, NULL, NULL, 0) | |
3019 | ||
3020 | IBM_PARAM(hotkey); | |
3021 | IBM_PARAM(bluetooth); | |
3022 | IBM_PARAM(video); | |
3023 | IBM_PARAM(light); | |
3024 | #ifdef CONFIG_THINKPAD_ACPI_DOCK | |
3025 | IBM_PARAM(dock); | |
3026 | #endif | |
3027 | #ifdef CONFIG_THINKPAD_ACPI_BAY | |
3028 | IBM_PARAM(bay); | |
3029 | #endif /* CONFIG_THINKPAD_ACPI_BAY */ | |
3030 | IBM_PARAM(cmos); | |
3031 | IBM_PARAM(led); | |
3032 | IBM_PARAM(beep); | |
3033 | IBM_PARAM(ecdump); | |
3034 | IBM_PARAM(brightness); | |
3035 | IBM_PARAM(volume); | |
3036 | IBM_PARAM(fan); | |
3037 | ||
3038 | static int __init thinkpad_acpi_module_init(void) | |
3039 | { | |
3040 | int ret, i; | |
3041 | ||
3042 | ret = probe_for_thinkpad(); | |
3043 | if (ret) | |
3044 | return ret; | |
3045 | ||
3046 | ibm_thinkpad_ec_found = check_dmi_for_ec(); | |
3047 | IBM_ACPIHANDLE_INIT(ecrd); | |
3048 | IBM_ACPIHANDLE_INIT(ecwr); | |
3049 | ||
3050 | proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir); | |
3051 | if (!proc_dir) { | |
3052 | printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR); | |
3053 | thinkpad_acpi_module_exit(); | |
3054 | return -ENODEV; | |
3055 | } | |
3056 | proc_dir->owner = THIS_MODULE; | |
3057 | ||
3058 | for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { | |
3059 | ret = ibm_init(&ibms_init[i]); | |
3060 | if (ret >= 0 && *ibms_init[i].param) | |
3061 | ret = ibms_init[i].data->write(ibms_init[i].param); | |
3062 | if (ret < 0) { | |
3063 | thinkpad_acpi_module_exit(); | |
3064 | return ret; | |
3065 | } | |
3066 | } | |
3067 | ||
3068 | return 0; | |
3069 | } | |
3070 | ||
3071 | static void thinkpad_acpi_module_exit(void) | |
3072 | { | |
3073 | struct ibm_struct *ibm, *itmp; | |
3074 | ||
3075 | list_for_each_entry_safe_reverse(ibm, itmp, | |
3076 | &tpacpi_all_drivers, | |
3077 | all_drivers) { | |
3078 | ibm_exit(ibm); | |
3079 | } | |
3080 | ||
3081 | dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); | |
3082 | ||
3083 | if (proc_dir) | |
3084 | remove_proc_entry(IBM_PROC_DIR, acpi_root_dir); | |
3085 | ||
3086 | kfree(ibm_thinkpad_ec_found); | |
3087 | } | |
3088 | ||
3089 | module_init(thinkpad_acpi_module_init); | |
3090 | module_exit(thinkpad_acpi_module_exit); |