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Commit | Line | Data |
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1da177e4 | 1 | /* |
643f12db | 2 | * thinkpad_acpi.c - ThinkPad ACPI Extras |
1da177e4 LT |
3 | * |
4 | * | |
78f81cc4 | 5 | * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> |
a62bc916 | 6 | * Copyright (C) 2006-2007 Henrique de Moraes Holschuh <hmh@hmh.eng.br> |
1da177e4 LT |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
a62bc916 HMH |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
21 | * 02110-1301, USA. | |
78f81cc4 BD |
22 | */ |
23 | ||
643f12db | 24 | #define IBM_VERSION "0.14" |
176750d6 | 25 | #define TPACPI_SYSFS_VERSION 0x000100 |
78f81cc4 BD |
26 | |
27 | /* | |
1da177e4 | 28 | * Changelog: |
643f12db HMH |
29 | * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to |
30 | * drivers/misc. | |
f9ff43a6 HMH |
31 | * |
32 | * 2006-11-22 0.13 new maintainer | |
33 | * changelog now lives in git commit history, and will | |
34 | * not be updated further in-file. | |
837ca6dd | 35 | * |
78f81cc4 BD |
36 | * 2005-08-17 0.12 fix compilation on 2.6.13-rc kernels |
37 | * 2005-03-17 0.11 support for 600e, 770x | |
38 | * thanks to Jamie Lentin <lentinj@dial.pipex.com> | |
39 | * support for 770e, G41 | |
40 | * G40 and G41 don't have a thinklight | |
41 | * temperatures no longer experimental | |
42 | * experimental brightness control | |
43 | * experimental volume control | |
44 | * experimental fan enable/disable | |
837ca6dd | 45 | * 2005-01-16 0.10 fix module loading on R30, R31 |
78f81cc4 BD |
46 | * 2005-01-16 0.9 support for 570, R30, R31 |
47 | * ultrabay support on A22p, A3x | |
48 | * limit arg for cmos, led, beep, drop experimental status | |
49 | * more capable led control on A21e, A22p, T20-22, X20 | |
50 | * experimental temperatures and fan speed | |
51 | * experimental embedded controller register dump | |
52 | * mark more functions as __init, drop incorrect __exit | |
53 | * use MODULE_VERSION | |
54 | * thanks to Henrik Brix Andersen <brix@gentoo.org> | |
55 | * fix parameter passing on module loading | |
56 | * thanks to Rusty Russell <rusty@rustcorp.com.au> | |
57 | * thanks to Jim Radford <radford@blackbean.org> | |
58 | * 2004-11-08 0.8 fix init error case, don't return from a macro | |
59 | * thanks to Chris Wright <chrisw@osdl.org> | |
60 | * 2004-10-23 0.7 fix module loading on A21e, A22p, T20, T21, X20 | |
61 | * fix led control on A21e | |
62 | * 2004-10-19 0.6 use acpi_bus_register_driver() to claim HKEY device | |
1da177e4 LT |
63 | * 2004-10-18 0.5 thinklight support on A21e, G40, R32, T20, T21, X20 |
64 | * proc file format changed | |
65 | * video_switch command | |
66 | * experimental cmos control | |
67 | * experimental led control | |
68 | * experimental acpi sounds | |
78f81cc4 BD |
69 | * 2004-09-16 0.4 support for module parameters |
70 | * hotkey mask can be prefixed by 0x | |
71 | * video output switching | |
72 | * video expansion control | |
73 | * ultrabay eject support | |
74 | * removed lcd brightness/on/off control, didn't work | |
75 | * 2004-08-17 0.3 support for R40 | |
76 | * lcd off, brightness control | |
77 | * thinklight on/off | |
78 | * 2004-08-14 0.2 support for T series, X20 | |
79 | * bluetooth enable/disable | |
80 | * hotkey events disabled by default | |
81 | * removed fan control, currently useless | |
82 | * 2004-08-09 0.1 initial release, support for X series | |
1da177e4 LT |
83 | */ |
84 | ||
f21f85de | 85 | #include "thinkpad_acpi.h" |
1da177e4 | 86 | |
f9ff43a6 | 87 | MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh"); |
78f81cc4 BD |
88 | MODULE_DESCRIPTION(IBM_DESC); |
89 | MODULE_VERSION(IBM_VERSION); | |
90 | MODULE_LICENSE("GPL"); | |
91 | ||
d903ac54 HMH |
92 | /* Please remove this in year 2009 */ |
93 | MODULE_ALIAS("ibm_acpi"); | |
94 | ||
1da177e4 LT |
95 | #define __unused __attribute__ ((unused)) |
96 | ||
56b6aeb0 HMH |
97 | /**************************************************************************** |
98 | **************************************************************************** | |
99 | * | |
100 | * ACPI Helpers and device model | |
101 | * | |
102 | **************************************************************************** | |
103 | ****************************************************************************/ | |
104 | ||
105 | /************************************************************************* | |
106 | * ACPI basic handles | |
107 | */ | |
1da177e4 LT |
108 | |
109 | static acpi_handle root_handle = NULL; | |
110 | ||
111 | #define IBM_HANDLE(object, parent, paths...) \ | |
112 | static acpi_handle object##_handle; \ | |
113 | static acpi_handle *object##_parent = &parent##_handle; \ | |
78f81cc4 | 114 | static char *object##_path; \ |
1da177e4 LT |
115 | static char *object##_paths[] = { paths } |
116 | ||
78f81cc4 BD |
117 | IBM_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */ |
118 | "\\_SB.PCI.ISA.EC", /* 570 */ | |
119 | "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */ | |
120 | "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */ | |
121 | "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */ | |
122 | "\\_SB.PCI0.ICH3.EC0", /* R31 */ | |
123 | "\\_SB.PCI0.LPC.EC", /* all others */ | |
56b6aeb0 | 124 | ); |
78f81cc4 | 125 | |
56b6aeb0 HMH |
126 | IBM_HANDLE(ecrd, ec, "ECRD"); /* 570 */ |
127 | IBM_HANDLE(ecwr, ec, "ECWR"); /* 570 */ | |
78f81cc4 | 128 | |
56b6aeb0 HMH |
129 | |
130 | /************************************************************************* | |
131 | * Misc ACPI handles | |
132 | */ | |
78f81cc4 BD |
133 | |
134 | IBM_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, T4x, X31, X40 */ | |
135 | "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ | |
136 | "\\CMS", /* R40, R40e */ | |
56b6aeb0 | 137 | ); /* all others */ |
78f81cc4 BD |
138 | |
139 | IBM_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ | |
140 | "^HKEY", /* R30, R31 */ | |
141 | "HKEY", /* all others */ | |
56b6aeb0 | 142 | ); /* 570 */ |
78f81cc4 | 143 | |
78f81cc4 | 144 | |
56b6aeb0 HMH |
145 | /************************************************************************* |
146 | * ACPI helpers | |
a8b7a662 HMH |
147 | */ |
148 | ||
1da177e4 LT |
149 | static int acpi_evalf(acpi_handle handle, |
150 | void *res, char *method, char *fmt, ...) | |
151 | { | |
152 | char *fmt0 = fmt; | |
78f81cc4 BD |
153 | struct acpi_object_list params; |
154 | union acpi_object in_objs[IBM_MAX_ACPI_ARGS]; | |
155 | struct acpi_buffer result, *resultp; | |
156 | union acpi_object out_obj; | |
157 | acpi_status status; | |
158 | va_list ap; | |
159 | char res_type; | |
160 | int success; | |
161 | int quiet; | |
1da177e4 LT |
162 | |
163 | if (!*fmt) { | |
164 | printk(IBM_ERR "acpi_evalf() called with empty format\n"); | |
165 | return 0; | |
166 | } | |
167 | ||
168 | if (*fmt == 'q') { | |
169 | quiet = 1; | |
170 | fmt++; | |
171 | } else | |
172 | quiet = 0; | |
173 | ||
174 | res_type = *(fmt++); | |
175 | ||
176 | params.count = 0; | |
177 | params.pointer = &in_objs[0]; | |
178 | ||
179 | va_start(ap, fmt); | |
180 | while (*fmt) { | |
181 | char c = *(fmt++); | |
182 | switch (c) { | |
183 | case 'd': /* int */ | |
184 | in_objs[params.count].integer.value = va_arg(ap, int); | |
185 | in_objs[params.count++].type = ACPI_TYPE_INTEGER; | |
186 | break; | |
78f81cc4 | 187 | /* add more types as needed */ |
1da177e4 LT |
188 | default: |
189 | printk(IBM_ERR "acpi_evalf() called " | |
190 | "with invalid format character '%c'\n", c); | |
191 | return 0; | |
192 | } | |
193 | } | |
194 | va_end(ap); | |
195 | ||
78f81cc4 BD |
196 | if (res_type != 'v') { |
197 | result.length = sizeof(out_obj); | |
198 | result.pointer = &out_obj; | |
199 | resultp = &result; | |
200 | } else | |
201 | resultp = NULL; | |
1da177e4 | 202 | |
78f81cc4 | 203 | status = acpi_evaluate_object(handle, method, ¶ms, resultp); |
1da177e4 LT |
204 | |
205 | switch (res_type) { | |
78f81cc4 | 206 | case 'd': /* int */ |
1da177e4 LT |
207 | if (res) |
208 | *(int *)res = out_obj.integer.value; | |
209 | success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER; | |
210 | break; | |
78f81cc4 | 211 | case 'v': /* void */ |
1da177e4 LT |
212 | success = status == AE_OK; |
213 | break; | |
78f81cc4 | 214 | /* add more types as needed */ |
1da177e4 LT |
215 | default: |
216 | printk(IBM_ERR "acpi_evalf() called " | |
217 | "with invalid format character '%c'\n", res_type); | |
218 | return 0; | |
219 | } | |
220 | ||
56b6aeb0 HMH |
221 | if (!success && !quiet) |
222 | printk(IBM_ERR "acpi_evalf(%s, %s, ...) failed: %d\n", | |
223 | method, fmt0, status); | |
224 | ||
225 | return success; | |
226 | } | |
227 | ||
228 | static void __unused acpi_print_int(acpi_handle handle, char *method) | |
229 | { | |
230 | int i; | |
231 | ||
232 | if (acpi_evalf(handle, &i, method, "d")) | |
233 | printk(IBM_INFO "%s = 0x%x\n", method, i); | |
234 | else | |
235 | printk(IBM_ERR "error calling %s\n", method); | |
236 | } | |
237 | ||
238 | static int acpi_ec_read(int i, u8 * p) | |
239 | { | |
240 | int v; | |
241 | ||
242 | if (ecrd_handle) { | |
243 | if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) | |
244 | return 0; | |
245 | *p = v; | |
246 | } else { | |
247 | if (ec_read(i, p) < 0) | |
248 | return 0; | |
249 | } | |
250 | ||
251 | return 1; | |
252 | } | |
253 | ||
254 | static int acpi_ec_write(int i, u8 v) | |
255 | { | |
256 | if (ecwr_handle) { | |
257 | if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) | |
258 | return 0; | |
259 | } else { | |
260 | if (ec_write(i, v) < 0) | |
261 | return 0; | |
262 | } | |
263 | ||
264 | return 1; | |
265 | } | |
266 | ||
267 | static int _sta(acpi_handle handle) | |
268 | { | |
269 | int status; | |
270 | ||
271 | if (!handle || !acpi_evalf(handle, &status, "_STA", "d")) | |
272 | status = 0; | |
273 | ||
274 | return status; | |
275 | } | |
276 | ||
c9bea99c HMH |
277 | static int issue_thinkpad_cmos_command(int cmos_cmd) |
278 | { | |
279 | if (!cmos_handle) | |
280 | return -ENXIO; | |
281 | ||
282 | if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) | |
283 | return -EIO; | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
56b6aeb0 HMH |
288 | /************************************************************************* |
289 | * ACPI device model | |
290 | */ | |
291 | ||
8d376cd6 | 292 | static void drv_acpi_handle_init(char *name, |
5fba344c HMH |
293 | acpi_handle *handle, acpi_handle parent, |
294 | char **paths, int num_paths, char **path) | |
56b6aeb0 HMH |
295 | { |
296 | int i; | |
297 | acpi_status status; | |
298 | ||
299 | for (i = 0; i < num_paths; i++) { | |
300 | status = acpi_get_handle(parent, paths[i], handle); | |
301 | if (ACPI_SUCCESS(status)) { | |
302 | *path = paths[i]; | |
303 | return; | |
304 | } | |
305 | } | |
306 | ||
307 | *handle = NULL; | |
308 | } | |
309 | ||
8d376cd6 | 310 | static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) |
56b6aeb0 HMH |
311 | { |
312 | struct ibm_struct *ibm = data; | |
313 | ||
8d376cd6 | 314 | if (!ibm || !ibm->acpi || !ibm->acpi->notify) |
56b6aeb0 HMH |
315 | return; |
316 | ||
8d376cd6 | 317 | ibm->acpi->notify(ibm, event); |
56b6aeb0 HMH |
318 | } |
319 | ||
8d376cd6 | 320 | static int __init setup_acpi_notify(struct ibm_struct *ibm) |
56b6aeb0 HMH |
321 | { |
322 | acpi_status status; | |
323 | int ret; | |
324 | ||
8d376cd6 HMH |
325 | BUG_ON(!ibm->acpi); |
326 | ||
327 | if (!*ibm->acpi->handle) | |
56b6aeb0 HMH |
328 | return 0; |
329 | ||
fe08bc4b HMH |
330 | dbg_printk(TPACPI_DBG_INIT, |
331 | "setting up ACPI notify for %s\n", ibm->name); | |
332 | ||
8d376cd6 | 333 | ret = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); |
56b6aeb0 HMH |
334 | if (ret < 0) { |
335 | printk(IBM_ERR "%s device not present\n", ibm->name); | |
336 | return -ENODEV; | |
337 | } | |
338 | ||
8d376cd6 HMH |
339 | acpi_driver_data(ibm->acpi->device) = ibm; |
340 | sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", | |
643f12db HMH |
341 | IBM_ACPI_EVENT_PREFIX, |
342 | ibm->name); | |
56b6aeb0 | 343 | |
8d376cd6 HMH |
344 | status = acpi_install_notify_handler(*ibm->acpi->handle, |
345 | ibm->acpi->type, dispatch_acpi_notify, ibm); | |
56b6aeb0 HMH |
346 | if (ACPI_FAILURE(status)) { |
347 | if (status == AE_ALREADY_EXISTS) { | |
348 | printk(IBM_NOTICE "another device driver is already handling %s events\n", | |
349 | ibm->name); | |
350 | } else { | |
351 | printk(IBM_ERR "acpi_install_notify_handler(%s) failed: %d\n", | |
352 | ibm->name, status); | |
353 | } | |
354 | return -ENODEV; | |
355 | } | |
8d376cd6 | 356 | ibm->flags.acpi_notify_installed = 1; |
56b6aeb0 HMH |
357 | return 0; |
358 | } | |
359 | ||
8d376cd6 | 360 | static int __init tpacpi_device_add(struct acpi_device *device) |
56b6aeb0 HMH |
361 | { |
362 | return 0; | |
363 | } | |
364 | ||
6700121b | 365 | static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) |
56b6aeb0 HMH |
366 | { |
367 | int ret; | |
368 | ||
fe08bc4b HMH |
369 | dbg_printk(TPACPI_DBG_INIT, |
370 | "registering %s as an ACPI driver\n", ibm->name); | |
371 | ||
8d376cd6 HMH |
372 | BUG_ON(!ibm->acpi); |
373 | ||
374 | ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); | |
375 | if (!ibm->acpi->driver) { | |
5fba344c HMH |
376 | printk(IBM_ERR "kzalloc(ibm->driver) failed\n"); |
377 | return -ENOMEM; | |
56b6aeb0 HMH |
378 | } |
379 | ||
8d376cd6 HMH |
380 | sprintf(ibm->acpi->driver->name, "%s_%s", IBM_NAME, ibm->name); |
381 | ibm->acpi->driver->ids = ibm->acpi->hid; | |
382 | ibm->acpi->driver->ops.add = &tpacpi_device_add; | |
56b6aeb0 | 383 | |
8d376cd6 | 384 | ret = acpi_bus_register_driver(ibm->acpi->driver); |
56b6aeb0 HMH |
385 | if (ret < 0) { |
386 | printk(IBM_ERR "acpi_bus_register_driver(%s) failed: %d\n", | |
8d376cd6 HMH |
387 | ibm->acpi->hid, ret); |
388 | kfree(ibm->acpi->driver); | |
389 | ibm->acpi->driver = NULL; | |
5fba344c | 390 | } else if (!ret) |
8d376cd6 | 391 | ibm->flags.acpi_driver_registered = 1; |
56b6aeb0 HMH |
392 | |
393 | return ret; | |
394 | } | |
395 | ||
396 | ||
397 | /**************************************************************************** | |
398 | **************************************************************************** | |
399 | * | |
400 | * Procfs Helpers | |
401 | * | |
402 | **************************************************************************** | |
403 | ****************************************************************************/ | |
404 | ||
8d376cd6 HMH |
405 | static int dispatch_procfs_read(char *page, char **start, off_t off, |
406 | int count, int *eof, void *data) | |
56b6aeb0 HMH |
407 | { |
408 | struct ibm_struct *ibm = data; | |
409 | int len; | |
410 | ||
411 | if (!ibm || !ibm->read) | |
412 | return -EINVAL; | |
413 | ||
414 | len = ibm->read(page); | |
415 | if (len < 0) | |
416 | return len; | |
417 | ||
418 | if (len <= off + count) | |
419 | *eof = 1; | |
420 | *start = page + off; | |
421 | len -= off; | |
422 | if (len > count) | |
423 | len = count; | |
424 | if (len < 0) | |
425 | len = 0; | |
426 | ||
427 | return len; | |
428 | } | |
429 | ||
8d376cd6 HMH |
430 | static int dispatch_procfs_write(struct file *file, |
431 | const char __user * userbuf, | |
432 | unsigned long count, void *data) | |
56b6aeb0 HMH |
433 | { |
434 | struct ibm_struct *ibm = data; | |
435 | char *kernbuf; | |
436 | int ret; | |
437 | ||
438 | if (!ibm || !ibm->write) | |
439 | return -EINVAL; | |
440 | ||
441 | kernbuf = kmalloc(count + 2, GFP_KERNEL); | |
442 | if (!kernbuf) | |
443 | return -ENOMEM; | |
1da177e4 | 444 | |
56b6aeb0 HMH |
445 | if (copy_from_user(kernbuf, userbuf, count)) { |
446 | kfree(kernbuf); | |
447 | return -EFAULT; | |
448 | } | |
1da177e4 | 449 | |
56b6aeb0 HMH |
450 | kernbuf[count] = 0; |
451 | strcat(kernbuf, ","); | |
452 | ret = ibm->write(kernbuf); | |
453 | if (ret == 0) | |
454 | ret = count; | |
1da177e4 | 455 | |
56b6aeb0 HMH |
456 | kfree(kernbuf); |
457 | ||
458 | return ret; | |
1da177e4 LT |
459 | } |
460 | ||
461 | static char *next_cmd(char **cmds) | |
462 | { | |
463 | char *start = *cmds; | |
464 | char *end; | |
465 | ||
466 | while ((end = strchr(start, ',')) && end == start) | |
467 | start = end + 1; | |
468 | ||
469 | if (!end) | |
470 | return NULL; | |
471 | ||
472 | *end = 0; | |
473 | *cmds = end + 1; | |
474 | return start; | |
475 | } | |
476 | ||
56b6aeb0 | 477 | |
54ae1501 HMH |
478 | /**************************************************************************** |
479 | **************************************************************************** | |
480 | * | |
481 | * Device model: hwmon and platform | |
482 | * | |
483 | **************************************************************************** | |
484 | ****************************************************************************/ | |
485 | ||
486 | static struct platform_device *tpacpi_pdev = NULL; | |
487 | static struct class_device *tpacpi_hwmon = NULL; | |
488 | ||
489 | static struct platform_driver tpacpi_pdriver = { | |
490 | .driver = { | |
491 | .name = IBM_DRVR_NAME, | |
492 | .owner = THIS_MODULE, | |
493 | }, | |
494 | }; | |
495 | ||
496 | ||
176750d6 HMH |
497 | /************************************************************************* |
498 | * thinkpad-acpi driver attributes | |
499 | */ | |
500 | ||
501 | /* interface_version --------------------------------------------------- */ | |
502 | static ssize_t tpacpi_driver_interface_version_show( | |
503 | struct device_driver *drv, | |
504 | char *buf) | |
505 | { | |
506 | return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); | |
507 | } | |
508 | ||
509 | static DRIVER_ATTR(interface_version, S_IRUGO, | |
510 | tpacpi_driver_interface_version_show, NULL); | |
511 | ||
512 | /* debug_level --------------------------------------------------------- */ | |
513 | static ssize_t tpacpi_driver_debug_show(struct device_driver *drv, | |
514 | char *buf) | |
515 | { | |
516 | return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); | |
517 | } | |
518 | ||
519 | static ssize_t tpacpi_driver_debug_store(struct device_driver *drv, | |
520 | const char *buf, size_t count) | |
521 | { | |
522 | unsigned long t; | |
176750d6 | 523 | |
7252374a | 524 | if (parse_strtoul(buf, 0xffff, &t)) |
176750d6 HMH |
525 | return -EINVAL; |
526 | ||
527 | dbg_level = t; | |
528 | ||
529 | return count; | |
530 | } | |
531 | ||
532 | static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, | |
533 | tpacpi_driver_debug_show, tpacpi_driver_debug_store); | |
534 | ||
535 | /* version ------------------------------------------------------------- */ | |
536 | static ssize_t tpacpi_driver_version_show(struct device_driver *drv, | |
537 | char *buf) | |
538 | { | |
539 | return snprintf(buf, PAGE_SIZE, "%s v%s\n", IBM_DESC, IBM_VERSION); | |
540 | } | |
541 | ||
542 | static DRIVER_ATTR(version, S_IRUGO, | |
543 | tpacpi_driver_version_show, NULL); | |
544 | ||
545 | /* --------------------------------------------------------------------- */ | |
546 | ||
547 | static struct driver_attribute* tpacpi_driver_attributes[] = { | |
548 | &driver_attr_debug_level, &driver_attr_version, | |
549 | &driver_attr_interface_version, | |
550 | }; | |
551 | ||
552 | static int __init tpacpi_create_driver_attributes(struct device_driver *drv) | |
553 | { | |
554 | int i, res; | |
555 | ||
556 | i = 0; | |
557 | res = 0; | |
558 | while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { | |
559 | res = driver_create_file(drv, tpacpi_driver_attributes[i]); | |
560 | i++; | |
561 | } | |
562 | ||
563 | return res; | |
564 | } | |
565 | ||
566 | static void tpacpi_remove_driver_attributes(struct device_driver *drv) | |
567 | { | |
568 | int i; | |
569 | ||
570 | for(i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) | |
571 | driver_remove_file(drv, tpacpi_driver_attributes[i]); | |
572 | } | |
573 | ||
7252374a HMH |
574 | /************************************************************************* |
575 | * sysfs support helpers | |
576 | */ | |
577 | ||
578 | struct attribute_set_obj { | |
579 | struct attribute_set s; | |
580 | struct attribute *a; | |
581 | } __attribute__((packed)); | |
582 | ||
583 | static struct attribute_set *create_attr_set(unsigned int max_members, | |
584 | const char* name) | |
585 | { | |
586 | struct attribute_set_obj *sobj; | |
587 | ||
588 | if (max_members == 0) | |
589 | return NULL; | |
590 | ||
591 | /* Allocates space for implicit NULL at the end too */ | |
592 | sobj = kzalloc(sizeof(struct attribute_set_obj) + | |
593 | max_members * sizeof(struct attribute *), | |
594 | GFP_KERNEL); | |
595 | if (!sobj) | |
596 | return NULL; | |
597 | sobj->s.max_members = max_members; | |
598 | sobj->s.group.attrs = &sobj->a; | |
599 | sobj->s.group.name = name; | |
600 | ||
601 | return &sobj->s; | |
602 | } | |
603 | ||
604 | /* not multi-threaded safe, use it in a single thread per set */ | |
605 | static int add_to_attr_set(struct attribute_set* s, struct attribute *attr) | |
606 | { | |
607 | if (!s || !attr) | |
608 | return -EINVAL; | |
609 | ||
610 | if (s->members >= s->max_members) | |
611 | return -ENOMEM; | |
612 | ||
613 | s->group.attrs[s->members] = attr; | |
614 | s->members++; | |
615 | ||
616 | return 0; | |
617 | } | |
618 | ||
619 | static int add_many_to_attr_set(struct attribute_set* s, | |
620 | struct attribute **attr, | |
621 | unsigned int count) | |
622 | { | |
623 | int i, res; | |
624 | ||
625 | for (i = 0; i < count; i++) { | |
626 | res = add_to_attr_set(s, attr[i]); | |
627 | if (res) | |
628 | return res; | |
629 | } | |
630 | ||
631 | return 0; | |
632 | } | |
633 | ||
634 | static void delete_attr_set(struct attribute_set* s, struct kobject *kobj) | |
635 | { | |
636 | sysfs_remove_group(kobj, &s->group); | |
637 | destroy_attr_set(s); | |
638 | } | |
639 | ||
640 | static int parse_strtoul(const char *buf, | |
641 | unsigned long max, unsigned long *value) | |
642 | { | |
643 | char *endp; | |
644 | ||
645 | *value = simple_strtoul(buf, &endp, 0); | |
646 | while (*endp && isspace(*endp)) | |
647 | endp++; | |
648 | if (*endp || *value > max) | |
649 | return -EINVAL; | |
650 | ||
651 | return 0; | |
652 | } | |
653 | ||
56b6aeb0 HMH |
654 | /**************************************************************************** |
655 | **************************************************************************** | |
656 | * | |
657 | * Subdrivers | |
658 | * | |
659 | **************************************************************************** | |
660 | ****************************************************************************/ | |
661 | ||
662 | /************************************************************************* | |
142cfc90 | 663 | * thinkpad-acpi init subdriver |
56b6aeb0 HMH |
664 | */ |
665 | ||
a5763f22 | 666 | static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm) |
1da177e4 LT |
667 | { |
668 | printk(IBM_INFO "%s v%s\n", IBM_DESC, IBM_VERSION); | |
669 | printk(IBM_INFO "%s\n", IBM_URL); | |
670 | ||
3945ac36 HMH |
671 | if (ibm_thinkpad_ec_found) |
672 | printk(IBM_INFO "ThinkPad EC firmware %s\n", | |
673 | ibm_thinkpad_ec_found); | |
674 | ||
1da177e4 LT |
675 | return 0; |
676 | } | |
677 | ||
643f12db | 678 | static int thinkpad_acpi_driver_read(char *p) |
1da177e4 LT |
679 | { |
680 | int len = 0; | |
681 | ||
682 | len += sprintf(p + len, "driver:\t\t%s\n", IBM_DESC); | |
683 | len += sprintf(p + len, "version:\t%s\n", IBM_VERSION); | |
684 | ||
685 | return len; | |
686 | } | |
687 | ||
a5763f22 HMH |
688 | static struct ibm_struct thinkpad_acpi_driver_data = { |
689 | .name = "driver", | |
690 | .read = thinkpad_acpi_driver_read, | |
691 | }; | |
692 | ||
56b6aeb0 HMH |
693 | /************************************************************************* |
694 | * Hotkey subdriver | |
695 | */ | |
696 | ||
78f81cc4 BD |
697 | static int hotkey_orig_status; |
698 | static int hotkey_orig_mask; | |
699 | ||
a5763f22 | 700 | static int __init hotkey_init(struct ibm_init_struct *iibm) |
56b6aeb0 | 701 | { |
b86c4722 HMH |
702 | int res; |
703 | ||
fe08bc4b HMH |
704 | vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n"); |
705 | ||
8d376cd6 | 706 | IBM_ACPIHANDLE_INIT(hkey); |
5fba344c | 707 | |
56b6aeb0 | 708 | /* hotkey not supported on 570 */ |
d8fd94d9 | 709 | tp_features.hotkey = hkey_handle != NULL; |
56b6aeb0 | 710 | |
fe08bc4b | 711 | vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n", |
d8fd94d9 | 712 | str_supported(tp_features.hotkey)); |
fe08bc4b | 713 | |
d8fd94d9 | 714 | if (tp_features.hotkey) { |
56b6aeb0 HMH |
715 | /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
716 | A30, R30, R31, T20-22, X20-21, X22-24 */ | |
d8fd94d9 HMH |
717 | tp_features.hotkey_mask = |
718 | acpi_evalf(hkey_handle, NULL, "DHKN", "qv"); | |
56b6aeb0 | 719 | |
fe08bc4b | 720 | vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n", |
d8fd94d9 | 721 | str_supported(tp_features.hotkey_mask)); |
fe08bc4b | 722 | |
b86c4722 HMH |
723 | res = hotkey_get(&hotkey_orig_status, &hotkey_orig_mask); |
724 | if (res) | |
725 | return res; | |
56b6aeb0 HMH |
726 | } |
727 | ||
d8fd94d9 | 728 | return (tp_features.hotkey)? 0 : 1; |
56b6aeb0 HMH |
729 | } |
730 | ||
731 | static void hotkey_exit(void) | |
732 | { | |
b86c4722 HMH |
733 | int res; |
734 | ||
d8fd94d9 | 735 | if (tp_features.hotkey) { |
fe08bc4b | 736 | dbg_printk(TPACPI_DBG_EXIT, "restoring original hotkey mask\n"); |
b86c4722 HMH |
737 | res = hotkey_set(hotkey_orig_status, hotkey_orig_mask); |
738 | if (res) | |
739 | printk(IBM_ERR "failed to restore hotkey to BIOS defaults\n"); | |
5fba344c | 740 | } |
56b6aeb0 HMH |
741 | } |
742 | ||
743 | static void hotkey_notify(struct ibm_struct *ibm, u32 event) | |
744 | { | |
745 | int hkey; | |
746 | ||
747 | if (acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) | |
8d376cd6 | 748 | acpi_bus_generate_event(ibm->acpi->device, event, hkey); |
56b6aeb0 HMH |
749 | else { |
750 | printk(IBM_ERR "unknown hotkey event %d\n", event); | |
8d376cd6 | 751 | acpi_bus_generate_event(ibm->acpi->device, event, 0); |
56b6aeb0 HMH |
752 | } |
753 | } | |
754 | ||
78f81cc4 | 755 | static int hotkey_get(int *status, int *mask) |
1da177e4 LT |
756 | { |
757 | if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) | |
b86c4722 | 758 | return -EIO; |
78f81cc4 | 759 | |
d8fd94d9 | 760 | if (tp_features.hotkey_mask) |
78f81cc4 | 761 | if (!acpi_evalf(hkey_handle, mask, "DHKN", "d")) |
b86c4722 | 762 | return -EIO; |
78f81cc4 | 763 | |
b86c4722 | 764 | return 0; |
1da177e4 LT |
765 | } |
766 | ||
78f81cc4 | 767 | static int hotkey_set(int status, int mask) |
1da177e4 LT |
768 | { |
769 | int i; | |
770 | ||
771 | if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status)) | |
b86c4722 | 772 | return -EIO; |
1da177e4 | 773 | |
d8fd94d9 | 774 | if (tp_features.hotkey_mask) |
78f81cc4 BD |
775 | for (i = 0; i < 32; i++) { |
776 | int bit = ((1 << i) & mask) != 0; | |
777 | if (!acpi_evalf(hkey_handle, | |
778 | NULL, "MHKM", "vdd", i + 1, bit)) | |
b86c4722 | 779 | return -EIO; |
78f81cc4 | 780 | } |
1da177e4 | 781 | |
b86c4722 | 782 | return 0; |
1da177e4 LT |
783 | } |
784 | ||
78f81cc4 | 785 | static int hotkey_read(char *p) |
1da177e4 | 786 | { |
b86c4722 | 787 | int res, status, mask; |
1da177e4 LT |
788 | int len = 0; |
789 | ||
d8fd94d9 | 790 | if (!tp_features.hotkey) { |
78f81cc4 BD |
791 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
792 | return len; | |
793 | } | |
794 | ||
b86c4722 HMH |
795 | res = hotkey_get(&status, &mask); |
796 | if (res) | |
797 | return res; | |
1da177e4 LT |
798 | |
799 | len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0)); | |
d8fd94d9 | 800 | if (tp_features.hotkey_mask) { |
1da177e4 LT |
801 | len += sprintf(p + len, "mask:\t\t0x%04x\n", mask); |
802 | len += sprintf(p + len, | |
803 | "commands:\tenable, disable, reset, <mask>\n"); | |
804 | } else { | |
805 | len += sprintf(p + len, "mask:\t\tnot supported\n"); | |
806 | len += sprintf(p + len, "commands:\tenable, disable, reset\n"); | |
807 | } | |
808 | ||
809 | return len; | |
810 | } | |
811 | ||
78f81cc4 | 812 | static int hotkey_write(char *buf) |
1da177e4 | 813 | { |
b86c4722 | 814 | int res, status, mask; |
1da177e4 LT |
815 | char *cmd; |
816 | int do_cmd = 0; | |
817 | ||
d8fd94d9 | 818 | if (!tp_features.hotkey) |
1da177e4 LT |
819 | return -ENODEV; |
820 | ||
b86c4722 HMH |
821 | res = hotkey_get(&status, &mask); |
822 | if (res) | |
823 | return res; | |
78f81cc4 | 824 | |
1da177e4 LT |
825 | while ((cmd = next_cmd(&buf))) { |
826 | if (strlencmp(cmd, "enable") == 0) { | |
827 | status = 1; | |
828 | } else if (strlencmp(cmd, "disable") == 0) { | |
829 | status = 0; | |
830 | } else if (strlencmp(cmd, "reset") == 0) { | |
78f81cc4 BD |
831 | status = hotkey_orig_status; |
832 | mask = hotkey_orig_mask; | |
1da177e4 LT |
833 | } else if (sscanf(cmd, "0x%x", &mask) == 1) { |
834 | /* mask set */ | |
835 | } else if (sscanf(cmd, "%x", &mask) == 1) { | |
836 | /* mask set */ | |
837 | } else | |
838 | return -EINVAL; | |
839 | do_cmd = 1; | |
840 | } | |
841 | ||
b86c4722 HMH |
842 | if (do_cmd) { |
843 | res = hotkey_set(status, mask); | |
844 | if (res) | |
845 | return res; | |
846 | } | |
1da177e4 LT |
847 | |
848 | return 0; | |
78f81cc4 | 849 | } |
1da177e4 | 850 | |
8d376cd6 HMH |
851 | static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { |
852 | .hid = IBM_HKEY_HID, | |
853 | .notify = hotkey_notify, | |
854 | .handle = &hkey_handle, | |
855 | .type = ACPI_DEVICE_NOTIFY, | |
856 | }; | |
857 | ||
a5763f22 HMH |
858 | static struct ibm_struct hotkey_driver_data = { |
859 | .name = "hotkey", | |
a5763f22 HMH |
860 | .read = hotkey_read, |
861 | .write = hotkey_write, | |
862 | .exit = hotkey_exit, | |
8d376cd6 | 863 | .acpi = &ibm_hotkey_acpidriver, |
a5763f22 HMH |
864 | }; |
865 | ||
56b6aeb0 HMH |
866 | /************************************************************************* |
867 | * Bluetooth subdriver | |
868 | */ | |
1da177e4 | 869 | |
a5763f22 | 870 | static int __init bluetooth_init(struct ibm_init_struct *iibm) |
1da177e4 | 871 | { |
d6fdd1e9 HMH |
872 | int status = 0; |
873 | ||
fe08bc4b HMH |
874 | vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n"); |
875 | ||
8d376cd6 | 876 | IBM_ACPIHANDLE_INIT(hkey); |
5fba344c | 877 | |
78f81cc4 BD |
878 | /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
879 | G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ | |
d8fd94d9 | 880 | tp_features.bluetooth = hkey_handle && |
d6fdd1e9 HMH |
881 | acpi_evalf(hkey_handle, &status, "GBDC", "qd"); |
882 | ||
883 | vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n", | |
884 | str_supported(tp_features.bluetooth), | |
885 | status); | |
886 | ||
887 | if (tp_features.bluetooth && | |
888 | !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { | |
889 | /* no bluetooth hardware present in system */ | |
890 | tp_features.bluetooth = 0; | |
891 | dbg_printk(TPACPI_DBG_INIT, | |
892 | "bluetooth hardware not installed\n"); | |
893 | } | |
fe08bc4b | 894 | |
d8fd94d9 | 895 | return (tp_features.bluetooth)? 0 : 1; |
1da177e4 LT |
896 | } |
897 | ||
d6fdd1e9 | 898 | static int bluetooth_get_radiosw(void) |
1da177e4 LT |
899 | { |
900 | int status; | |
901 | ||
d6fdd1e9 HMH |
902 | if (!tp_features.bluetooth) |
903 | return -ENODEV; | |
1da177e4 | 904 | |
d6fdd1e9 HMH |
905 | if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) |
906 | return -EIO; | |
907 | ||
908 | return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0); | |
909 | } | |
910 | ||
911 | static int bluetooth_set_radiosw(int radio_on) | |
912 | { | |
913 | int status; | |
914 | ||
915 | if (!tp_features.bluetooth) | |
916 | return -ENODEV; | |
917 | ||
918 | if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) | |
919 | return -EIO; | |
920 | if (radio_on) | |
921 | status |= TP_ACPI_BLUETOOTH_RADIOSSW; | |
922 | else | |
923 | status &= ~TP_ACPI_BLUETOOTH_RADIOSSW; | |
924 | if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) | |
925 | return -EIO; | |
926 | ||
927 | return 0; | |
1da177e4 LT |
928 | } |
929 | ||
78f81cc4 | 930 | static int bluetooth_read(char *p) |
1da177e4 LT |
931 | { |
932 | int len = 0; | |
d6fdd1e9 | 933 | int status = bluetooth_get_radiosw(); |
1da177e4 | 934 | |
d8fd94d9 | 935 | if (!tp_features.bluetooth) |
1da177e4 | 936 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
1da177e4 | 937 | else { |
d6fdd1e9 HMH |
938 | len += sprintf(p + len, "status:\t\t%s\n", |
939 | (status)? "enabled" : "disabled"); | |
1da177e4 LT |
940 | len += sprintf(p + len, "commands:\tenable, disable\n"); |
941 | } | |
942 | ||
943 | return len; | |
944 | } | |
945 | ||
78f81cc4 | 946 | static int bluetooth_write(char *buf) |
1da177e4 | 947 | { |
1da177e4 | 948 | char *cmd; |
1da177e4 | 949 | |
d8fd94d9 | 950 | if (!tp_features.bluetooth) |
78f81cc4 | 951 | return -ENODEV; |
1da177e4 LT |
952 | |
953 | while ((cmd = next_cmd(&buf))) { | |
954 | if (strlencmp(cmd, "enable") == 0) { | |
d6fdd1e9 | 955 | bluetooth_set_radiosw(1); |
1da177e4 | 956 | } else if (strlencmp(cmd, "disable") == 0) { |
d6fdd1e9 | 957 | bluetooth_set_radiosw(0); |
1da177e4 LT |
958 | } else |
959 | return -EINVAL; | |
1da177e4 LT |
960 | } |
961 | ||
1da177e4 LT |
962 | return 0; |
963 | } | |
964 | ||
a5763f22 HMH |
965 | static struct ibm_struct bluetooth_driver_data = { |
966 | .name = "bluetooth", | |
967 | .read = bluetooth_read, | |
968 | .write = bluetooth_write, | |
969 | }; | |
970 | ||
56b6aeb0 HMH |
971 | /************************************************************************* |
972 | * Wan subdriver | |
973 | */ | |
974 | ||
a5763f22 | 975 | static int __init wan_init(struct ibm_init_struct *iibm) |
42adb53c | 976 | { |
d6fdd1e9 HMH |
977 | int status = 0; |
978 | ||
fe08bc4b HMH |
979 | vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n"); |
980 | ||
8d376cd6 | 981 | IBM_ACPIHANDLE_INIT(hkey); |
5fba344c | 982 | |
d8fd94d9 | 983 | tp_features.wan = hkey_handle && |
d6fdd1e9 HMH |
984 | acpi_evalf(hkey_handle, &status, "GWAN", "qd"); |
985 | ||
986 | vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n", | |
987 | str_supported(tp_features.wan), | |
988 | status); | |
989 | ||
990 | if (tp_features.wan && | |
991 | !(status & TP_ACPI_WANCARD_HWPRESENT)) { | |
992 | /* no wan hardware present in system */ | |
993 | tp_features.wan = 0; | |
994 | dbg_printk(TPACPI_DBG_INIT, | |
995 | "wan hardware not installed\n"); | |
996 | } | |
fe08bc4b | 997 | |
d8fd94d9 | 998 | return (tp_features.wan)? 0 : 1; |
42adb53c JF |
999 | } |
1000 | ||
d6fdd1e9 | 1001 | static int wan_get_radiosw(void) |
42adb53c JF |
1002 | { |
1003 | int status; | |
1004 | ||
d6fdd1e9 HMH |
1005 | if (!tp_features.wan) |
1006 | return -ENODEV; | |
42adb53c | 1007 | |
d6fdd1e9 HMH |
1008 | if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) |
1009 | return -EIO; | |
1010 | ||
1011 | return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0); | |
1012 | } | |
1013 | ||
1014 | static int wan_set_radiosw(int radio_on) | |
1015 | { | |
1016 | int status; | |
1017 | ||
1018 | if (!tp_features.wan) | |
1019 | return -ENODEV; | |
1020 | ||
1021 | if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) | |
1022 | return -EIO; | |
1023 | if (radio_on) | |
1024 | status |= TP_ACPI_WANCARD_RADIOSSW; | |
1025 | else | |
1026 | status &= ~TP_ACPI_WANCARD_RADIOSSW; | |
1027 | if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) | |
1028 | return -EIO; | |
1029 | ||
1030 | return 0; | |
42adb53c JF |
1031 | } |
1032 | ||
1033 | static int wan_read(char *p) | |
1034 | { | |
1035 | int len = 0; | |
d6fdd1e9 | 1036 | int status = wan_get_radiosw(); |
42adb53c | 1037 | |
d8fd94d9 | 1038 | if (!tp_features.wan) |
42adb53c | 1039 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
42adb53c | 1040 | else { |
d6fdd1e9 HMH |
1041 | len += sprintf(p + len, "status:\t\t%s\n", |
1042 | (status)? "enabled" : "disabled"); | |
42adb53c JF |
1043 | len += sprintf(p + len, "commands:\tenable, disable\n"); |
1044 | } | |
1045 | ||
1046 | return len; | |
1047 | } | |
1048 | ||
1049 | static int wan_write(char *buf) | |
1050 | { | |
42adb53c | 1051 | char *cmd; |
42adb53c | 1052 | |
d8fd94d9 | 1053 | if (!tp_features.wan) |
42adb53c JF |
1054 | return -ENODEV; |
1055 | ||
1056 | while ((cmd = next_cmd(&buf))) { | |
1057 | if (strlencmp(cmd, "enable") == 0) { | |
d6fdd1e9 | 1058 | wan_set_radiosw(1); |
42adb53c | 1059 | } else if (strlencmp(cmd, "disable") == 0) { |
d6fdd1e9 | 1060 | wan_set_radiosw(0); |
42adb53c JF |
1061 | } else |
1062 | return -EINVAL; | |
42adb53c JF |
1063 | } |
1064 | ||
42adb53c JF |
1065 | return 0; |
1066 | } | |
1067 | ||
a5763f22 HMH |
1068 | static struct ibm_struct wan_driver_data = { |
1069 | .name = "wan", | |
1070 | .read = wan_read, | |
1071 | .write = wan_write, | |
92641177 | 1072 | .flags.experimental = 1, |
a5763f22 HMH |
1073 | }; |
1074 | ||
56b6aeb0 HMH |
1075 | /************************************************************************* |
1076 | * Video subdriver | |
1077 | */ | |
1078 | ||
9a8e1738 HMH |
1079 | static enum video_access_mode video_supported; |
1080 | static int video_orig_autosw; | |
78f81cc4 | 1081 | |
56b6aeb0 HMH |
1082 | IBM_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ |
1083 | "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ | |
1084 | "\\_SB.PCI0.VID0", /* 770e */ | |
1085 | "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ | |
1086 | "\\_SB.PCI0.AGP.VID", /* all others */ | |
1087 | ); /* R30, R31 */ | |
1088 | ||
1089 | IBM_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ | |
1090 | ||
a5763f22 | 1091 | static int __init video_init(struct ibm_init_struct *iibm) |
1da177e4 | 1092 | { |
78f81cc4 BD |
1093 | int ivga; |
1094 | ||
fe08bc4b HMH |
1095 | vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); |
1096 | ||
8d376cd6 HMH |
1097 | IBM_ACPIHANDLE_INIT(vid); |
1098 | IBM_ACPIHANDLE_INIT(vid2); | |
5fba344c | 1099 | |
78f81cc4 BD |
1100 | if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) |
1101 | /* G41, assume IVGA doesn't change */ | |
1102 | vid_handle = vid2_handle; | |
1103 | ||
1104 | if (!vid_handle) | |
1105 | /* video switching not supported on R30, R31 */ | |
efa27145 | 1106 | video_supported = TPACPI_VIDEO_NONE; |
78f81cc4 BD |
1107 | else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) |
1108 | /* 570 */ | |
efa27145 | 1109 | video_supported = TPACPI_VIDEO_570; |
78f81cc4 BD |
1110 | else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) |
1111 | /* 600e/x, 770e, 770x */ | |
efa27145 | 1112 | video_supported = TPACPI_VIDEO_770; |
78f81cc4 BD |
1113 | else |
1114 | /* all others */ | |
efa27145 | 1115 | video_supported = TPACPI_VIDEO_NEW; |
1da177e4 | 1116 | |
fe08bc4b HMH |
1117 | vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", |
1118 | str_supported(video_supported != TPACPI_VIDEO_NONE), | |
1119 | video_supported); | |
1120 | ||
5fba344c | 1121 | return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1; |
1da177e4 LT |
1122 | } |
1123 | ||
56b6aeb0 HMH |
1124 | static void video_exit(void) |
1125 | { | |
83f34724 HMH |
1126 | dbg_printk(TPACPI_DBG_EXIT, |
1127 | "restoring original video autoswitch mode\n"); | |
1128 | if (video_autosw_set(video_orig_autosw)) | |
1129 | printk(IBM_ERR "error while trying to restore original " | |
1130 | "video autoswitch mode\n"); | |
56b6aeb0 HMH |
1131 | } |
1132 | ||
83f34724 | 1133 | static int video_outputsw_get(void) |
1da177e4 LT |
1134 | { |
1135 | int status = 0; | |
1136 | int i; | |
1137 | ||
83f34724 HMH |
1138 | switch (video_supported) { |
1139 | case TPACPI_VIDEO_570: | |
1140 | if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", | |
1141 | TP_ACPI_VIDEO_570_PHSCMD)) | |
1142 | return -EIO; | |
1143 | status = i & TP_ACPI_VIDEO_570_PHSMASK; | |
1144 | break; | |
1145 | case TPACPI_VIDEO_770: | |
1146 | if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) | |
1147 | return -EIO; | |
1148 | if (i) | |
1149 | status |= TP_ACPI_VIDEO_S_LCD; | |
1150 | if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) | |
1151 | return -EIO; | |
1152 | if (i) | |
1153 | status |= TP_ACPI_VIDEO_S_CRT; | |
1154 | break; | |
1155 | case TPACPI_VIDEO_NEW: | |
1156 | if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || | |
1157 | !acpi_evalf(NULL, &i, "\\VCDC", "d")) | |
1158 | return -EIO; | |
1159 | if (i) | |
1160 | status |= TP_ACPI_VIDEO_S_CRT; | |
1161 | ||
1162 | if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || | |
1163 | !acpi_evalf(NULL, &i, "\\VCDL", "d")) | |
1164 | return -EIO; | |
1165 | if (i) | |
1166 | status |= TP_ACPI_VIDEO_S_LCD; | |
1167 | if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) | |
1168 | return -EIO; | |
1169 | if (i) | |
1170 | status |= TP_ACPI_VIDEO_S_DVI; | |
1171 | break; | |
1172 | default: | |
1173 | return -ENOSYS; | |
78f81cc4 BD |
1174 | } |
1175 | ||
1176 | return status; | |
1177 | } | |
1da177e4 | 1178 | |
83f34724 | 1179 | static int video_outputsw_set(int status) |
78f81cc4 | 1180 | { |
83f34724 HMH |
1181 | int autosw; |
1182 | int res = 0; | |
1183 | ||
1184 | switch (video_supported) { | |
1185 | case TPACPI_VIDEO_570: | |
1186 | res = acpi_evalf(NULL, NULL, | |
1187 | "\\_SB.PHS2", "vdd", | |
1188 | TP_ACPI_VIDEO_570_PHS2CMD, | |
1189 | status | TP_ACPI_VIDEO_570_PHS2SET); | |
1190 | break; | |
1191 | case TPACPI_VIDEO_770: | |
1192 | autosw = video_autosw_get(); | |
1193 | if (autosw < 0) | |
1194 | return autosw; | |
1da177e4 | 1195 | |
83f34724 HMH |
1196 | res = video_autosw_set(1); |
1197 | if (res) | |
1198 | return res; | |
1199 | res = acpi_evalf(vid_handle, NULL, | |
1200 | "ASWT", "vdd", status * 0x100, 0); | |
1201 | if (!autosw && video_autosw_set(autosw)) { | |
1202 | printk(IBM_ERR "video auto-switch left enabled due to error\n"); | |
1203 | return -EIO; | |
1204 | } | |
1205 | break; | |
1206 | case TPACPI_VIDEO_NEW: | |
1207 | res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && | |
1208 | acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); | |
1209 | break; | |
1210 | default: | |
1211 | return -ENOSYS; | |
1212 | } | |
1da177e4 | 1213 | |
83f34724 | 1214 | return (res)? 0 : -EIO; |
1da177e4 LT |
1215 | } |
1216 | ||
83f34724 | 1217 | static int video_autosw_get(void) |
78f81cc4 | 1218 | { |
83f34724 | 1219 | int autosw = 0; |
78f81cc4 | 1220 | |
83f34724 HMH |
1221 | switch (video_supported) { |
1222 | case TPACPI_VIDEO_570: | |
1223 | if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) | |
1224 | return -EIO; | |
1225 | break; | |
1226 | case TPACPI_VIDEO_770: | |
1227 | case TPACPI_VIDEO_NEW: | |
1228 | if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) | |
1229 | return -EIO; | |
1230 | break; | |
1231 | default: | |
1232 | return -ENOSYS; | |
1233 | } | |
78f81cc4 | 1234 | |
83f34724 | 1235 | return autosw & 1; |
78f81cc4 BD |
1236 | } |
1237 | ||
83f34724 | 1238 | static int video_autosw_set(int enable) |
78f81cc4 | 1239 | { |
83f34724 HMH |
1240 | if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0)) |
1241 | return -EIO; | |
1242 | return 0; | |
78f81cc4 BD |
1243 | } |
1244 | ||
83f34724 | 1245 | static int video_outputsw_cycle(void) |
78f81cc4 | 1246 | { |
83f34724 HMH |
1247 | int autosw = video_autosw_get(); |
1248 | int res; | |
78f81cc4 | 1249 | |
83f34724 HMH |
1250 | if (autosw < 0) |
1251 | return autosw; | |
78f81cc4 | 1252 | |
83f34724 HMH |
1253 | switch (video_supported) { |
1254 | case TPACPI_VIDEO_570: | |
1255 | res = video_autosw_set(1); | |
1256 | if (res) | |
1257 | return res; | |
1258 | res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); | |
1259 | break; | |
1260 | case TPACPI_VIDEO_770: | |
1261 | case TPACPI_VIDEO_NEW: | |
1262 | res = video_autosw_set(1); | |
1263 | if (res) | |
1264 | return res; | |
1265 | res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); | |
1266 | break; | |
1267 | default: | |
1268 | return -ENOSYS; | |
1269 | } | |
1270 | if (!autosw && video_autosw_set(autosw)) { | |
1271 | printk(IBM_ERR "video auto-switch left enabled due to error\n"); | |
1272 | return -EIO; | |
78f81cc4 BD |
1273 | } |
1274 | ||
83f34724 HMH |
1275 | return (res)? 0 : -EIO; |
1276 | } | |
1277 | ||
1278 | static int video_expand_toggle(void) | |
1279 | { | |
1280 | switch (video_supported) { | |
1281 | case TPACPI_VIDEO_570: | |
1282 | return acpi_evalf(ec_handle, NULL, "_Q17", "v")? | |
1283 | 0 : -EIO; | |
1284 | case TPACPI_VIDEO_770: | |
1285 | return acpi_evalf(vid_handle, NULL, "VEXP", "v")? | |
1286 | 0 : -EIO; | |
1287 | case TPACPI_VIDEO_NEW: | |
1288 | return acpi_evalf(NULL, NULL, "\\VEXP", "v")? | |
1289 | 0 : -EIO; | |
1290 | default: | |
1291 | return -ENOSYS; | |
1292 | } | |
1293 | /* not reached */ | |
78f81cc4 BD |
1294 | } |
1295 | ||
56b6aeb0 HMH |
1296 | static int video_read(char *p) |
1297 | { | |
83f34724 | 1298 | int status, autosw; |
56b6aeb0 HMH |
1299 | int len = 0; |
1300 | ||
83f34724 | 1301 | if (video_supported == TPACPI_VIDEO_NONE) { |
56b6aeb0 HMH |
1302 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
1303 | return len; | |
1304 | } | |
1305 | ||
83f34724 HMH |
1306 | status = video_outputsw_get(); |
1307 | if (status < 0) | |
1308 | return status; | |
1309 | ||
1310 | autosw = video_autosw_get(); | |
1311 | if (autosw < 0) | |
1312 | return autosw; | |
1313 | ||
56b6aeb0 HMH |
1314 | len += sprintf(p + len, "status:\t\tsupported\n"); |
1315 | len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0)); | |
1316 | len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1)); | |
efa27145 | 1317 | if (video_supported == TPACPI_VIDEO_NEW) |
56b6aeb0 HMH |
1318 | len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3)); |
1319 | len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0)); | |
1320 | len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n"); | |
1321 | len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n"); | |
efa27145 | 1322 | if (video_supported == TPACPI_VIDEO_NEW) |
56b6aeb0 HMH |
1323 | len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n"); |
1324 | len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n"); | |
1325 | len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n"); | |
1326 | ||
1327 | return len; | |
1328 | } | |
1329 | ||
78f81cc4 | 1330 | static int video_write(char *buf) |
1da177e4 LT |
1331 | { |
1332 | char *cmd; | |
1333 | int enable, disable, status; | |
83f34724 | 1334 | int res; |
1da177e4 | 1335 | |
83f34724 | 1336 | if (video_supported == TPACPI_VIDEO_NONE) |
78f81cc4 BD |
1337 | return -ENODEV; |
1338 | ||
83f34724 HMH |
1339 | enable = 0; |
1340 | disable = 0; | |
1da177e4 LT |
1341 | |
1342 | while ((cmd = next_cmd(&buf))) { | |
1343 | if (strlencmp(cmd, "lcd_enable") == 0) { | |
83f34724 | 1344 | enable |= TP_ACPI_VIDEO_S_LCD; |
1da177e4 | 1345 | } else if (strlencmp(cmd, "lcd_disable") == 0) { |
83f34724 | 1346 | disable |= TP_ACPI_VIDEO_S_LCD; |
1da177e4 | 1347 | } else if (strlencmp(cmd, "crt_enable") == 0) { |
83f34724 | 1348 | enable |= TP_ACPI_VIDEO_S_CRT; |
1da177e4 | 1349 | } else if (strlencmp(cmd, "crt_disable") == 0) { |
83f34724 | 1350 | disable |= TP_ACPI_VIDEO_S_CRT; |
efa27145 | 1351 | } else if (video_supported == TPACPI_VIDEO_NEW && |
78f81cc4 | 1352 | strlencmp(cmd, "dvi_enable") == 0) { |
83f34724 | 1353 | enable |= TP_ACPI_VIDEO_S_DVI; |
efa27145 | 1354 | } else if (video_supported == TPACPI_VIDEO_NEW && |
78f81cc4 | 1355 | strlencmp(cmd, "dvi_disable") == 0) { |
83f34724 | 1356 | disable |= TP_ACPI_VIDEO_S_DVI; |
1da177e4 | 1357 | } else if (strlencmp(cmd, "auto_enable") == 0) { |
83f34724 HMH |
1358 | res = video_autosw_set(1); |
1359 | if (res) | |
1360 | return res; | |
1da177e4 | 1361 | } else if (strlencmp(cmd, "auto_disable") == 0) { |
83f34724 HMH |
1362 | res = video_autosw_set(0); |
1363 | if (res) | |
1364 | return res; | |
1da177e4 | 1365 | } else if (strlencmp(cmd, "video_switch") == 0) { |
83f34724 HMH |
1366 | res = video_outputsw_cycle(); |
1367 | if (res) | |
1368 | return res; | |
1da177e4 | 1369 | } else if (strlencmp(cmd, "expand_toggle") == 0) { |
83f34724 HMH |
1370 | res = video_expand_toggle(); |
1371 | if (res) | |
1372 | return res; | |
1da177e4 LT |
1373 | } else |
1374 | return -EINVAL; | |
1375 | } | |
1376 | ||
1377 | if (enable || disable) { | |
83f34724 HMH |
1378 | status = video_outputsw_get(); |
1379 | if (status < 0) | |
1380 | return status; | |
1381 | res = video_outputsw_set((status & ~disable) | enable); | |
1382 | if (res) | |
1383 | return res; | |
1da177e4 LT |
1384 | } |
1385 | ||
1386 | return 0; | |
1387 | } | |
1388 | ||
a5763f22 HMH |
1389 | static struct ibm_struct video_driver_data = { |
1390 | .name = "video", | |
1391 | .read = video_read, | |
1392 | .write = video_write, | |
1393 | .exit = video_exit, | |
1394 | }; | |
1395 | ||
56b6aeb0 HMH |
1396 | /************************************************************************* |
1397 | * Light (thinklight) subdriver | |
1398 | */ | |
1da177e4 | 1399 | |
56b6aeb0 HMH |
1400 | IBM_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ |
1401 | IBM_HANDLE(ledb, ec, "LEDB"); /* G4x */ | |
1402 | ||
a5763f22 | 1403 | static int __init light_init(struct ibm_init_struct *iibm) |
1da177e4 | 1404 | { |
fe08bc4b HMH |
1405 | vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); |
1406 | ||
8d376cd6 HMH |
1407 | IBM_ACPIHANDLE_INIT(ledb); |
1408 | IBM_ACPIHANDLE_INIT(lght); | |
1409 | IBM_ACPIHANDLE_INIT(cmos); | |
5fba344c | 1410 | |
78f81cc4 | 1411 | /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ |
d8fd94d9 | 1412 | tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; |
78f81cc4 | 1413 | |
d8fd94d9 | 1414 | if (tp_features.light) |
78f81cc4 BD |
1415 | /* light status not supported on |
1416 | 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ | |
d8fd94d9 HMH |
1417 | tp_features.light_status = |
1418 | acpi_evalf(ec_handle, NULL, "KBLT", "qv"); | |
1da177e4 | 1419 | |
fe08bc4b | 1420 | vdbg_printk(TPACPI_DBG_INIT, "light is %s\n", |
d8fd94d9 | 1421 | str_supported(tp_features.light)); |
fe08bc4b | 1422 | |
d8fd94d9 | 1423 | return (tp_features.light)? 0 : 1; |
1da177e4 LT |
1424 | } |
1425 | ||
78f81cc4 | 1426 | static int light_read(char *p) |
1da177e4 LT |
1427 | { |
1428 | int len = 0; | |
1429 | int status = 0; | |
1430 | ||
d8fd94d9 | 1431 | if (!tp_features.light) { |
78f81cc4 | 1432 | len += sprintf(p + len, "status:\t\tnot supported\n"); |
d8fd94d9 | 1433 | } else if (!tp_features.light_status) { |
78f81cc4 BD |
1434 | len += sprintf(p + len, "status:\t\tunknown\n"); |
1435 | len += sprintf(p + len, "commands:\ton, off\n"); | |
1436 | } else { | |
1da177e4 LT |
1437 | if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) |
1438 | return -EIO; | |
1439 | len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0)); | |
78f81cc4 BD |
1440 | len += sprintf(p + len, "commands:\ton, off\n"); |
1441 | } | |
1da177e4 LT |
1442 | |
1443 | return len; | |
1444 | } | |
1445 | ||
78f81cc4 | 1446 | static int light_write(char *buf) |
1da177e4 LT |
1447 | { |
1448 | int cmos_cmd, lght_cmd; | |
1449 | char *cmd; | |
1450 | int success; | |
78f81cc4 | 1451 | |
d8fd94d9 | 1452 | if (!tp_features.light) |
78f81cc4 BD |
1453 | return -ENODEV; |
1454 | ||
1da177e4 LT |
1455 | while ((cmd = next_cmd(&buf))) { |
1456 | if (strlencmp(cmd, "on") == 0) { | |
1457 | cmos_cmd = 0x0c; | |
1458 | lght_cmd = 1; | |
1459 | } else if (strlencmp(cmd, "off") == 0) { | |
1460 | cmos_cmd = 0x0d; | |
1461 | lght_cmd = 0; | |
1462 | } else | |
1463 | return -EINVAL; | |
78f81cc4 | 1464 | |
1da177e4 | 1465 | success = cmos_handle ? |
78f81cc4 BD |
1466 | acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd) : |
1467 | acpi_evalf(lght_handle, NULL, NULL, "vd", lght_cmd); | |
1da177e4 LT |
1468 | if (!success) |
1469 | return -EIO; | |
1470 | } | |
1471 | ||
1472 | return 0; | |
1473 | } | |
1474 | ||
a5763f22 HMH |
1475 | static struct ibm_struct light_driver_data = { |
1476 | .name = "light", | |
1477 | .read = light_read, | |
1478 | .write = light_write, | |
1479 | }; | |
1480 | ||
56b6aeb0 HMH |
1481 | /************************************************************************* |
1482 | * Dock subdriver | |
1483 | */ | |
1da177e4 | 1484 | |
85998248 | 1485 | #ifdef CONFIG_THINKPAD_ACPI_DOCK |
56b6aeb0 HMH |
1486 | |
1487 | IBM_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */ | |
1488 | "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */ | |
1489 | "\\_SB.PCI0.PCI1.DOCK", /* all others */ | |
1490 | "\\_SB.PCI.ISA.SLCE", /* 570 */ | |
1491 | ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */ | |
1492 | ||
5fba344c HMH |
1493 | /* don't list other alternatives as we install a notify handler on the 570 */ |
1494 | IBM_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */ | |
1495 | ||
1da177e4 LT |
1496 | #define dock_docked() (_sta(dock_handle) & 1) |
1497 | ||
a5763f22 | 1498 | static int __init dock_init(struct ibm_init_struct *iibm) |
5fba344c | 1499 | { |
fe08bc4b HMH |
1500 | vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n"); |
1501 | ||
8d376cd6 HMH |
1502 | IBM_ACPIHANDLE_INIT(dock); |
1503 | IBM_ACPIHANDLE_INIT(pci); | |
5fba344c | 1504 | |
fe08bc4b HMH |
1505 | vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n", |
1506 | str_supported(dock_handle != NULL)); | |
1507 | ||
5fba344c HMH |
1508 | return (dock_handle)? 0 : 1; |
1509 | } | |
1510 | ||
56b6aeb0 HMH |
1511 | static void dock_notify(struct ibm_struct *ibm, u32 event) |
1512 | { | |
1513 | int docked = dock_docked(); | |
8d376cd6 | 1514 | int pci = ibm->acpi->hid && strstr(ibm->acpi->hid, IBM_PCI_HID); |
56b6aeb0 HMH |
1515 | |
1516 | if (event == 1 && !pci) /* 570 */ | |
8d376cd6 | 1517 | acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */ |
56b6aeb0 | 1518 | else if (event == 1 && pci) /* 570 */ |
8d376cd6 | 1519 | acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */ |
56b6aeb0 | 1520 | else if (event == 3 && docked) |
8d376cd6 | 1521 | acpi_bus_generate_event(ibm->acpi->device, event, 1); /* button */ |
56b6aeb0 | 1522 | else if (event == 3 && !docked) |
8d376cd6 | 1523 | acpi_bus_generate_event(ibm->acpi->device, event, 2); /* undock */ |
56b6aeb0 | 1524 | else if (event == 0 && docked) |
8d376cd6 | 1525 | acpi_bus_generate_event(ibm->acpi->device, event, 3); /* dock */ |
56b6aeb0 HMH |
1526 | else { |
1527 | printk(IBM_ERR "unknown dock event %d, status %d\n", | |
1528 | event, _sta(dock_handle)); | |
8d376cd6 | 1529 | acpi_bus_generate_event(ibm->acpi->device, event, 0); /* unknown */ |
56b6aeb0 HMH |
1530 | } |
1531 | } | |
1532 | ||
78f81cc4 | 1533 | static int dock_read(char *p) |
1da177e4 LT |
1534 | { |
1535 | int len = 0; | |
1536 | int docked = dock_docked(); | |
1537 | ||
1538 | if (!dock_handle) | |
1539 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1540 | else if (!docked) | |
1541 | len += sprintf(p + len, "status:\t\tundocked\n"); | |
1542 | else { | |
1543 | len += sprintf(p + len, "status:\t\tdocked\n"); | |
1544 | len += sprintf(p + len, "commands:\tdock, undock\n"); | |
1545 | } | |
1546 | ||
1547 | return len; | |
1548 | } | |
1549 | ||
78f81cc4 | 1550 | static int dock_write(char *buf) |
1da177e4 LT |
1551 | { |
1552 | char *cmd; | |
1553 | ||
1554 | if (!dock_docked()) | |
78f81cc4 | 1555 | return -ENODEV; |
1da177e4 LT |
1556 | |
1557 | while ((cmd = next_cmd(&buf))) { | |
1558 | if (strlencmp(cmd, "undock") == 0) { | |
78f81cc4 BD |
1559 | if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) || |
1560 | !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1)) | |
56b6aeb0 HMH |
1561 | return -EIO; |
1562 | } else if (strlencmp(cmd, "dock") == 0) { | |
1563 | if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1)) | |
1564 | return -EIO; | |
1565 | } else | |
1566 | return -EINVAL; | |
1da177e4 | 1567 | } |
56b6aeb0 HMH |
1568 | |
1569 | return 0; | |
1da177e4 | 1570 | } |
56b6aeb0 | 1571 | |
8d376cd6 | 1572 | static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = { |
a5763f22 | 1573 | { |
a5763f22 HMH |
1574 | .notify = dock_notify, |
1575 | .handle = &dock_handle, | |
1576 | .type = ACPI_SYSTEM_NOTIFY, | |
1577 | }, | |
1578 | { | |
a5763f22 HMH |
1579 | .hid = IBM_PCI_HID, |
1580 | .notify = dock_notify, | |
1581 | .handle = &pci_handle, | |
1582 | .type = ACPI_SYSTEM_NOTIFY, | |
1583 | }, | |
1584 | }; | |
1585 | ||
8d376cd6 HMH |
1586 | static struct ibm_struct dock_driver_data[2] = { |
1587 | { | |
1588 | .name = "dock", | |
1589 | .read = dock_read, | |
1590 | .write = dock_write, | |
1591 | .acpi = &ibm_dock_acpidriver[0], | |
1592 | }, | |
1593 | { | |
1594 | .name = "dock", | |
1595 | .acpi = &ibm_dock_acpidriver[1], | |
1596 | }, | |
1597 | }; | |
1598 | ||
85998248 | 1599 | #endif /* CONFIG_THINKPAD_ACPI_DOCK */ |
56b6aeb0 HMH |
1600 | |
1601 | /************************************************************************* | |
1602 | * Bay subdriver | |
1603 | */ | |
1da177e4 | 1604 | |
85998248 | 1605 | #ifdef CONFIG_THINKPAD_ACPI_BAY |
56b6aeb0 HMH |
1606 | IBM_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */ |
1607 | "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */ | |
1608 | "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */ | |
1609 | "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */ | |
1610 | ); /* A21e, R30, R31 */ | |
1611 | IBM_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */ | |
1612 | "_EJ0", /* all others */ | |
1613 | ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */ | |
1614 | IBM_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */ | |
1615 | "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */ | |
1616 | ); /* all others */ | |
1617 | IBM_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */ | |
1618 | "_EJ0", /* 770x */ | |
1619 | ); /* all others */ | |
1620 | ||
a5763f22 | 1621 | static int __init bay_init(struct ibm_init_struct *iibm) |
1da177e4 | 1622 | { |
fe08bc4b HMH |
1623 | vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n"); |
1624 | ||
8d376cd6 | 1625 | IBM_ACPIHANDLE_INIT(bay); |
5fba344c | 1626 | if (bay_handle) |
8d376cd6 HMH |
1627 | IBM_ACPIHANDLE_INIT(bay_ej); |
1628 | IBM_ACPIHANDLE_INIT(bay2); | |
5fba344c | 1629 | if (bay2_handle) |
8d376cd6 | 1630 | IBM_ACPIHANDLE_INIT(bay2_ej); |
5fba344c | 1631 | |
d8fd94d9 HMH |
1632 | tp_features.bay_status = bay_handle && |
1633 | acpi_evalf(bay_handle, NULL, "_STA", "qv"); | |
1634 | tp_features.bay_status2 = bay2_handle && | |
1635 | acpi_evalf(bay2_handle, NULL, "_STA", "qv"); | |
78f81cc4 | 1636 | |
d8fd94d9 HMH |
1637 | tp_features.bay_eject = bay_handle && bay_ej_handle && |
1638 | (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental); | |
1639 | tp_features.bay_eject2 = bay2_handle && bay2_ej_handle && | |
1640 | (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental); | |
1da177e4 | 1641 | |
fe08bc4b HMH |
1642 | vdbg_printk(TPACPI_DBG_INIT, |
1643 | "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n", | |
d8fd94d9 HMH |
1644 | str_supported(tp_features.bay_status), |
1645 | str_supported(tp_features.bay_eject), | |
1646 | str_supported(tp_features.bay_status2), | |
1647 | str_supported(tp_features.bay_eject2)); | |
fe08bc4b | 1648 | |
d8fd94d9 HMH |
1649 | return (tp_features.bay_status || tp_features.bay_eject || |
1650 | tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1; | |
1da177e4 LT |
1651 | } |
1652 | ||
56b6aeb0 HMH |
1653 | static void bay_notify(struct ibm_struct *ibm, u32 event) |
1654 | { | |
8d376cd6 | 1655 | acpi_bus_generate_event(ibm->acpi->device, event, 0); |
56b6aeb0 HMH |
1656 | } |
1657 | ||
78f81cc4 BD |
1658 | #define bay_occupied(b) (_sta(b##_handle) & 1) |
1659 | ||
1660 | static int bay_read(char *p) | |
1da177e4 LT |
1661 | { |
1662 | int len = 0; | |
78f81cc4 BD |
1663 | int occupied = bay_occupied(bay); |
1664 | int occupied2 = bay_occupied(bay2); | |
1665 | int eject, eject2; | |
1666 | ||
d8fd94d9 HMH |
1667 | len += sprintf(p + len, "status:\t\t%s\n", |
1668 | tp_features.bay_status ? | |
1669 | (occupied ? "occupied" : "unoccupied") : | |
1670 | "not supported"); | |
1671 | if (tp_features.bay_status2) | |
78f81cc4 BD |
1672 | len += sprintf(p + len, "status2:\t%s\n", occupied2 ? |
1673 | "occupied" : "unoccupied"); | |
1674 | ||
d8fd94d9 HMH |
1675 | eject = tp_features.bay_eject && occupied; |
1676 | eject2 = tp_features.bay_eject2 && occupied2; | |
78f81cc4 BD |
1677 | |
1678 | if (eject && eject2) | |
1679 | len += sprintf(p + len, "commands:\teject, eject2\n"); | |
1680 | else if (eject) | |
1da177e4 | 1681 | len += sprintf(p + len, "commands:\teject\n"); |
78f81cc4 BD |
1682 | else if (eject2) |
1683 | len += sprintf(p + len, "commands:\teject2\n"); | |
1da177e4 LT |
1684 | |
1685 | return len; | |
1686 | } | |
1687 | ||
78f81cc4 | 1688 | static int bay_write(char *buf) |
1da177e4 LT |
1689 | { |
1690 | char *cmd; | |
1691 | ||
d8fd94d9 | 1692 | if (!tp_features.bay_eject && !tp_features.bay_eject2) |
78f81cc4 BD |
1693 | return -ENODEV; |
1694 | ||
1da177e4 | 1695 | while ((cmd = next_cmd(&buf))) { |
d8fd94d9 | 1696 | if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) { |
78f81cc4 BD |
1697 | if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1)) |
1698 | return -EIO; | |
d8fd94d9 | 1699 | } else if (tp_features.bay_eject2 && |
78f81cc4 BD |
1700 | strlencmp(cmd, "eject2") == 0) { |
1701 | if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1)) | |
1da177e4 LT |
1702 | return -EIO; |
1703 | } else | |
1704 | return -EINVAL; | |
1705 | } | |
1706 | ||
1707 | return 0; | |
78f81cc4 | 1708 | } |
a5763f22 | 1709 | |
8d376cd6 HMH |
1710 | static struct tp_acpi_drv_struct ibm_bay_acpidriver = { |
1711 | .notify = bay_notify, | |
1712 | .handle = &bay_handle, | |
1713 | .type = ACPI_SYSTEM_NOTIFY, | |
1714 | }; | |
1715 | ||
a5763f22 HMH |
1716 | static struct ibm_struct bay_driver_data = { |
1717 | .name = "bay", | |
1718 | .read = bay_read, | |
1719 | .write = bay_write, | |
8d376cd6 | 1720 | .acpi = &ibm_bay_acpidriver, |
a5763f22 HMH |
1721 | }; |
1722 | ||
85998248 | 1723 | #endif /* CONFIG_THINKPAD_ACPI_BAY */ |
1da177e4 | 1724 | |
56b6aeb0 HMH |
1725 | /************************************************************************* |
1726 | * CMOS subdriver | |
1727 | */ | |
1728 | ||
a5763f22 | 1729 | static int __init cmos_init(struct ibm_init_struct *iibm) |
5fba344c | 1730 | { |
fe08bc4b HMH |
1731 | vdbg_printk(TPACPI_DBG_INIT, |
1732 | "initializing cmos commands subdriver\n"); | |
1733 | ||
8d376cd6 | 1734 | IBM_ACPIHANDLE_INIT(cmos); |
5fba344c | 1735 | |
fe08bc4b HMH |
1736 | vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", |
1737 | str_supported(cmos_handle != NULL)); | |
5fba344c HMH |
1738 | return (cmos_handle)? 0 : 1; |
1739 | } | |
1740 | ||
78f81cc4 | 1741 | static int cmos_read(char *p) |
1da177e4 LT |
1742 | { |
1743 | int len = 0; | |
1744 | ||
78f81cc4 BD |
1745 | /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, |
1746 | R30, R31, T20-22, X20-21 */ | |
1da177e4 LT |
1747 | if (!cmos_handle) |
1748 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1749 | else { | |
1750 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
78f81cc4 | 1751 | len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-21)\n"); |
1da177e4 LT |
1752 | } |
1753 | ||
1754 | return len; | |
1755 | } | |
1756 | ||
78f81cc4 | 1757 | static int cmos_write(char *buf) |
1da177e4 LT |
1758 | { |
1759 | char *cmd; | |
c9bea99c | 1760 | int cmos_cmd, res; |
1da177e4 LT |
1761 | |
1762 | while ((cmd = next_cmd(&buf))) { | |
78f81cc4 BD |
1763 | if (sscanf(cmd, "%u", &cmos_cmd) == 1 && |
1764 | cmos_cmd >= 0 && cmos_cmd <= 21) { | |
1da177e4 LT |
1765 | /* cmos_cmd set */ |
1766 | } else | |
1767 | return -EINVAL; | |
1768 | ||
c9bea99c HMH |
1769 | res = issue_thinkpad_cmos_command(cmos_cmd); |
1770 | if (res) | |
1771 | return res; | |
1da177e4 LT |
1772 | } |
1773 | ||
1774 | return 0; | |
78f81cc4 BD |
1775 | } |
1776 | ||
a5763f22 HMH |
1777 | static struct ibm_struct cmos_driver_data = { |
1778 | .name = "cmos", | |
1779 | .read = cmos_read, | |
1780 | .write = cmos_write, | |
1781 | }; | |
56b6aeb0 HMH |
1782 | |
1783 | /************************************************************************* | |
1784 | * LED subdriver | |
1785 | */ | |
1786 | ||
9a8e1738 | 1787 | static enum led_access_mode led_supported; |
78f81cc4 | 1788 | |
56b6aeb0 HMH |
1789 | IBM_HANDLE(led, ec, "SLED", /* 570 */ |
1790 | "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ | |
1791 | "LED", /* all others */ | |
1792 | ); /* R30, R31 */ | |
1793 | ||
a5763f22 | 1794 | static int __init led_init(struct ibm_init_struct *iibm) |
78f81cc4 | 1795 | { |
fe08bc4b HMH |
1796 | vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); |
1797 | ||
8d376cd6 | 1798 | IBM_ACPIHANDLE_INIT(led); |
5fba344c | 1799 | |
78f81cc4 BD |
1800 | if (!led_handle) |
1801 | /* led not supported on R30, R31 */ | |
efa27145 | 1802 | led_supported = TPACPI_LED_NONE; |
78f81cc4 BD |
1803 | else if (strlencmp(led_path, "SLED") == 0) |
1804 | /* 570 */ | |
efa27145 | 1805 | led_supported = TPACPI_LED_570; |
78f81cc4 BD |
1806 | else if (strlencmp(led_path, "SYSL") == 0) |
1807 | /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ | |
efa27145 | 1808 | led_supported = TPACPI_LED_OLD; |
78f81cc4 BD |
1809 | else |
1810 | /* all others */ | |
efa27145 | 1811 | led_supported = TPACPI_LED_NEW; |
78f81cc4 | 1812 | |
fe08bc4b HMH |
1813 | vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", |
1814 | str_supported(led_supported), led_supported); | |
1815 | ||
5fba344c | 1816 | return (led_supported != TPACPI_LED_NONE)? 0 : 1; |
78f81cc4 BD |
1817 | } |
1818 | ||
1819 | #define led_status(s) ((s) == 0 ? "off" : ((s) == 1 ? "on" : "blinking")) | |
1820 | ||
1821 | static int led_read(char *p) | |
1da177e4 LT |
1822 | { |
1823 | int len = 0; | |
1824 | ||
78f81cc4 BD |
1825 | if (!led_supported) { |
1826 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1827 | return len; | |
1828 | } | |
1829 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
1830 | ||
efa27145 | 1831 | if (led_supported == TPACPI_LED_570) { |
78f81cc4 BD |
1832 | /* 570 */ |
1833 | int i, status; | |
1834 | for (i = 0; i < 8; i++) { | |
1835 | if (!acpi_evalf(ec_handle, | |
1836 | &status, "GLED", "dd", 1 << i)) | |
1837 | return -EIO; | |
1838 | len += sprintf(p + len, "%d:\t\t%s\n", | |
1839 | i, led_status(status)); | |
1840 | } | |
1841 | } | |
1842 | ||
1da177e4 | 1843 | len += sprintf(p + len, "commands:\t" |
78f81cc4 | 1844 | "<led> on, <led> off, <led> blink (<led> is 0-7)\n"); |
1da177e4 LT |
1845 | |
1846 | return len; | |
1847 | } | |
1848 | ||
78f81cc4 BD |
1849 | /* off, on, blink */ |
1850 | static const int led_sled_arg1[] = { 0, 1, 3 }; | |
1851 | static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */ | |
1852 | static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */ | |
1853 | static const int led_led_arg1[] = { 0, 0x80, 0xc0 }; | |
1854 | ||
78f81cc4 | 1855 | static int led_write(char *buf) |
1da177e4 LT |
1856 | { |
1857 | char *cmd; | |
78f81cc4 BD |
1858 | int led, ind, ret; |
1859 | ||
1860 | if (!led_supported) | |
1861 | return -ENODEV; | |
1da177e4 LT |
1862 | |
1863 | while ((cmd = next_cmd(&buf))) { | |
78f81cc4 | 1864 | if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7) |
1da177e4 LT |
1865 | return -EINVAL; |
1866 | ||
78f81cc4 BD |
1867 | if (strstr(cmd, "off")) { |
1868 | ind = 0; | |
1da177e4 | 1869 | } else if (strstr(cmd, "on")) { |
78f81cc4 BD |
1870 | ind = 1; |
1871 | } else if (strstr(cmd, "blink")) { | |
1872 | ind = 2; | |
1da177e4 LT |
1873 | } else |
1874 | return -EINVAL; | |
78f81cc4 | 1875 | |
efa27145 | 1876 | if (led_supported == TPACPI_LED_570) { |
78f81cc4 BD |
1877 | /* 570 */ |
1878 | led = 1 << led; | |
1da177e4 | 1879 | if (!acpi_evalf(led_handle, NULL, NULL, "vdd", |
78f81cc4 | 1880 | led, led_sled_arg1[ind])) |
1da177e4 | 1881 | return -EIO; |
efa27145 | 1882 | } else if (led_supported == TPACPI_LED_OLD) { |
78f81cc4 BD |
1883 | /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ |
1884 | led = 1 << led; | |
efa27145 | 1885 | ret = ec_write(TPACPI_LED_EC_HLMS, led); |
78f81cc4 BD |
1886 | if (ret >= 0) |
1887 | ret = | |
efa27145 | 1888 | ec_write(TPACPI_LED_EC_HLBL, |
e062e034 | 1889 | led * led_exp_hlbl[ind]); |
78f81cc4 BD |
1890 | if (ret >= 0) |
1891 | ret = | |
efa27145 | 1892 | ec_write(TPACPI_LED_EC_HLCL, |
e062e034 | 1893 | led * led_exp_hlcl[ind]); |
78f81cc4 BD |
1894 | if (ret < 0) |
1895 | return ret; | |
1896 | } else { | |
1897 | /* all others */ | |
1898 | if (!acpi_evalf(led_handle, NULL, NULL, "vdd", | |
1899 | led, led_led_arg1[ind])) | |
1da177e4 | 1900 | return -EIO; |
78f81cc4 BD |
1901 | } |
1902 | } | |
1903 | ||
1904 | return 0; | |
1905 | } | |
1906 | ||
a5763f22 HMH |
1907 | static struct ibm_struct led_driver_data = { |
1908 | .name = "led", | |
1909 | .read = led_read, | |
1910 | .write = led_write, | |
1911 | }; | |
1912 | ||
56b6aeb0 HMH |
1913 | /************************************************************************* |
1914 | * Beep subdriver | |
1915 | */ | |
1916 | ||
1917 | IBM_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ | |
1918 | ||
a5763f22 | 1919 | static int __init beep_init(struct ibm_init_struct *iibm) |
5fba344c | 1920 | { |
fe08bc4b HMH |
1921 | vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); |
1922 | ||
8d376cd6 | 1923 | IBM_ACPIHANDLE_INIT(beep); |
5fba344c | 1924 | |
fe08bc4b HMH |
1925 | vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", |
1926 | str_supported(beep_handle != NULL)); | |
1927 | ||
5fba344c HMH |
1928 | return (beep_handle)? 0 : 1; |
1929 | } | |
1930 | ||
78f81cc4 BD |
1931 | static int beep_read(char *p) |
1932 | { | |
1933 | int len = 0; | |
1934 | ||
1935 | if (!beep_handle) | |
1936 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
1937 | else { | |
1938 | len += sprintf(p + len, "status:\t\tsupported\n"); | |
1939 | len += sprintf(p + len, "commands:\t<cmd> (<cmd> is 0-17)\n"); | |
1940 | } | |
1941 | ||
1942 | return len; | |
1943 | } | |
1944 | ||
1945 | static int beep_write(char *buf) | |
1946 | { | |
1947 | char *cmd; | |
1948 | int beep_cmd; | |
1949 | ||
1950 | if (!beep_handle) | |
1951 | return -ENODEV; | |
1952 | ||
1953 | while ((cmd = next_cmd(&buf))) { | |
1954 | if (sscanf(cmd, "%u", &beep_cmd) == 1 && | |
1955 | beep_cmd >= 0 && beep_cmd <= 17) { | |
1956 | /* beep_cmd set */ | |
1957 | } else | |
1958 | return -EINVAL; | |
1959 | if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0)) | |
1960 | return -EIO; | |
1961 | } | |
1962 | ||
1963 | return 0; | |
1964 | } | |
1965 | ||
a5763f22 HMH |
1966 | static struct ibm_struct beep_driver_data = { |
1967 | .name = "beep", | |
1968 | .read = beep_read, | |
1969 | .write = beep_write, | |
1970 | }; | |
1971 | ||
56b6aeb0 HMH |
1972 | /************************************************************************* |
1973 | * Thermal subdriver | |
1974 | */ | |
78f81cc4 | 1975 | |
a26f878a | 1976 | static enum thermal_access_mode thermal_read_mode; |
78f81cc4 | 1977 | |
a5763f22 | 1978 | static int __init thermal_init(struct ibm_init_struct *iibm) |
78f81cc4 | 1979 | { |
60eb0b35 HMH |
1980 | u8 t, ta1, ta2; |
1981 | int i; | |
5fba344c HMH |
1982 | int acpi_tmp7; |
1983 | ||
fe08bc4b HMH |
1984 | vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); |
1985 | ||
5fba344c | 1986 | acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); |
60eb0b35 HMH |
1987 | |
1988 | if (ibm_thinkpad_ec_found && experimental) { | |
1989 | /* | |
1990 | * Direct EC access mode: sensors at registers | |
1991 | * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for | |
1992 | * non-implemented, thermal sensors return 0x80 when | |
1993 | * not available | |
1994 | */ | |
78f81cc4 | 1995 | |
60eb0b35 HMH |
1996 | ta1 = ta2 = 0; |
1997 | for (i = 0; i < 8; i++) { | |
04cc862c | 1998 | if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { |
60eb0b35 HMH |
1999 | ta1 |= t; |
2000 | } else { | |
2001 | ta1 = 0; | |
2002 | break; | |
2003 | } | |
04cc862c | 2004 | if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { |
60eb0b35 HMH |
2005 | ta2 |= t; |
2006 | } else { | |
2007 | ta1 = 0; | |
2008 | break; | |
2009 | } | |
2010 | } | |
2011 | if (ta1 == 0) { | |
2012 | /* This is sheer paranoia, but we handle it anyway */ | |
2013 | if (acpi_tmp7) { | |
2014 | printk(IBM_ERR | |
2015 | "ThinkPad ACPI EC access misbehaving, " | |
2016 | "falling back to ACPI TMPx access mode\n"); | |
efa27145 | 2017 | thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; |
60eb0b35 HMH |
2018 | } else { |
2019 | printk(IBM_ERR | |
2020 | "ThinkPad ACPI EC access misbehaving, " | |
2021 | "disabling thermal sensors access\n"); | |
efa27145 | 2022 | thermal_read_mode = TPACPI_THERMAL_NONE; |
60eb0b35 HMH |
2023 | } |
2024 | } else { | |
2025 | thermal_read_mode = | |
2026 | (ta2 != 0) ? | |
efa27145 | 2027 | TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; |
60eb0b35 HMH |
2028 | } |
2029 | } else if (acpi_tmp7) { | |
a26f878a HMH |
2030 | if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { |
2031 | /* 600e/x, 770e, 770x */ | |
efa27145 | 2032 | thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; |
a26f878a HMH |
2033 | } else { |
2034 | /* Standard ACPI TMPx access, max 8 sensors */ | |
efa27145 | 2035 | thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; |
a26f878a HMH |
2036 | } |
2037 | } else { | |
2038 | /* temperatures not supported on 570, G4x, R30, R31, R32 */ | |
efa27145 | 2039 | thermal_read_mode = TPACPI_THERMAL_NONE; |
a26f878a | 2040 | } |
78f81cc4 | 2041 | |
fe08bc4b HMH |
2042 | vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", |
2043 | str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), | |
2044 | thermal_read_mode); | |
2045 | ||
5fba344c | 2046 | return (thermal_read_mode != TPACPI_THERMAL_NONE)? 0 : 1; |
78f81cc4 BD |
2047 | } |
2048 | ||
04cc862c HMH |
2049 | /* idx is zero-based */ |
2050 | static int thermal_get_sensor(int idx, s32 *value) | |
78f81cc4 | 2051 | { |
04cc862c | 2052 | int t; |
60eb0b35 | 2053 | s8 tmp; |
04cc862c | 2054 | char tmpi[5]; |
78f81cc4 | 2055 | |
04cc862c | 2056 | t = TP_EC_THERMAL_TMP0; |
78f81cc4 | 2057 | |
a26f878a | 2058 | switch (thermal_read_mode) { |
efa27145 HMH |
2059 | #if TPACPI_MAX_THERMAL_SENSORS >= 16 |
2060 | case TPACPI_THERMAL_TPEC_16: | |
04cc862c HMH |
2061 | if (idx >= 8 && idx <= 15) { |
2062 | t = TP_EC_THERMAL_TMP8; | |
2063 | idx -= 8; | |
60eb0b35 HMH |
2064 | } |
2065 | /* fallthrough */ | |
2066 | #endif | |
efa27145 | 2067 | case TPACPI_THERMAL_TPEC_8: |
04cc862c HMH |
2068 | if (idx <= 7) { |
2069 | if (!acpi_ec_read(t + idx, &tmp)) | |
78f81cc4 | 2070 | return -EIO; |
04cc862c HMH |
2071 | *value = tmp * 1000; |
2072 | return 0; | |
60eb0b35 | 2073 | } |
04cc862c | 2074 | break; |
78f81cc4 | 2075 | |
efa27145 | 2076 | case TPACPI_THERMAL_ACPI_UPDT: |
04cc862c HMH |
2077 | if (idx <= 7) { |
2078 | snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); | |
2079 | if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) | |
2080 | return -EIO; | |
78f81cc4 BD |
2081 | if (!acpi_evalf(ec_handle, &t, tmpi, "d")) |
2082 | return -EIO; | |
04cc862c HMH |
2083 | *value = (t - 2732) * 100; |
2084 | return 0; | |
78f81cc4 | 2085 | } |
04cc862c | 2086 | break; |
78f81cc4 | 2087 | |
efa27145 | 2088 | case TPACPI_THERMAL_ACPI_TMP07: |
04cc862c HMH |
2089 | if (idx <= 7) { |
2090 | snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); | |
78f81cc4 BD |
2091 | if (!acpi_evalf(ec_handle, &t, tmpi, "d")) |
2092 | return -EIO; | |
04cc862c HMH |
2093 | *value = t * 1000; |
2094 | return 0; | |
78f81cc4 | 2095 | } |
04cc862c | 2096 | break; |
78f81cc4 | 2097 | |
efa27145 | 2098 | case TPACPI_THERMAL_NONE: |
a26f878a | 2099 | default: |
04cc862c HMH |
2100 | return -ENOSYS; |
2101 | } | |
2102 | ||
2103 | return -EINVAL; | |
2104 | } | |
2105 | ||
2106 | static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) | |
2107 | { | |
2108 | int res, i; | |
2109 | int n; | |
2110 | ||
2111 | n = 8; | |
2112 | i = 0; | |
2113 | ||
2114 | if (!s) | |
2115 | return -EINVAL; | |
2116 | ||
2117 | if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) | |
2118 | n = 16; | |
2119 | ||
2120 | for(i = 0 ; i < n; i++) { | |
2121 | res = thermal_get_sensor(i, &s->temp[i]); | |
2122 | if (res) | |
2123 | return res; | |
78f81cc4 | 2124 | } |
04cc862c HMH |
2125 | |
2126 | return n; | |
a26f878a HMH |
2127 | } |
2128 | ||
2129 | static int thermal_read(char *p) | |
2130 | { | |
2131 | int len = 0; | |
2132 | int n, i; | |
2133 | struct ibm_thermal_sensors_struct t; | |
2134 | ||
2135 | n = thermal_get_sensors(&t); | |
2136 | if (unlikely(n < 0)) | |
2137 | return n; | |
2138 | ||
2139 | len += sprintf(p + len, "temperatures:\t"); | |
2140 | ||
2141 | if (n > 0) { | |
2142 | for (i = 0; i < (n - 1); i++) | |
2143 | len += sprintf(p + len, "%d ", t.temp[i] / 1000); | |
2144 | len += sprintf(p + len, "%d\n", t.temp[i] / 1000); | |
2145 | } else | |
2146 | len += sprintf(p + len, "not supported\n"); | |
78f81cc4 BD |
2147 | |
2148 | return len; | |
2149 | } | |
2150 | ||
a5763f22 HMH |
2151 | static struct ibm_struct thermal_driver_data = { |
2152 | .name = "thermal", | |
2153 | .read = thermal_read, | |
2154 | }; | |
2155 | ||
56b6aeb0 HMH |
2156 | /************************************************************************* |
2157 | * EC Dump subdriver | |
2158 | */ | |
2159 | ||
78f81cc4 BD |
2160 | static u8 ecdump_regs[256]; |
2161 | ||
2162 | static int ecdump_read(char *p) | |
2163 | { | |
2164 | int len = 0; | |
2165 | int i, j; | |
2166 | u8 v; | |
2167 | ||
2168 | len += sprintf(p + len, "EC " | |
2169 | " +00 +01 +02 +03 +04 +05 +06 +07" | |
2170 | " +08 +09 +0a +0b +0c +0d +0e +0f\n"); | |
2171 | for (i = 0; i < 256; i += 16) { | |
2172 | len += sprintf(p + len, "EC 0x%02x:", i); | |
2173 | for (j = 0; j < 16; j++) { | |
2174 | if (!acpi_ec_read(i + j, &v)) | |
2175 | break; | |
2176 | if (v != ecdump_regs[i + j]) | |
2177 | len += sprintf(p + len, " *%02x", v); | |
2178 | else | |
2179 | len += sprintf(p + len, " %02x", v); | |
2180 | ecdump_regs[i + j] = v; | |
2181 | } | |
2182 | len += sprintf(p + len, "\n"); | |
2183 | if (j != 16) | |
2184 | break; | |
2185 | } | |
2186 | ||
2187 | /* These are way too dangerous to advertise openly... */ | |
2188 | #if 0 | |
2189 | len += sprintf(p + len, "commands:\t0x<offset> 0x<value>" | |
2190 | " (<offset> is 00-ff, <value> is 00-ff)\n"); | |
2191 | len += sprintf(p + len, "commands:\t0x<offset> <value> " | |
2192 | " (<offset> is 00-ff, <value> is 0-255)\n"); | |
2193 | #endif | |
2194 | return len; | |
2195 | } | |
2196 | ||
2197 | static int ecdump_write(char *buf) | |
2198 | { | |
2199 | char *cmd; | |
2200 | int i, v; | |
2201 | ||
2202 | while ((cmd = next_cmd(&buf))) { | |
2203 | if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) { | |
2204 | /* i and v set */ | |
2205 | } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) { | |
2206 | /* i and v set */ | |
2207 | } else | |
2208 | return -EINVAL; | |
2209 | if (i >= 0 && i < 256 && v >= 0 && v < 256) { | |
2210 | if (!acpi_ec_write(i, v)) | |
1da177e4 LT |
2211 | return -EIO; |
2212 | } else | |
2213 | return -EINVAL; | |
2214 | } | |
2215 | ||
2216 | return 0; | |
78f81cc4 BD |
2217 | } |
2218 | ||
a5763f22 HMH |
2219 | static struct ibm_struct ecdump_driver_data = { |
2220 | .name = "ecdump", | |
2221 | .read = ecdump_read, | |
2222 | .write = ecdump_write, | |
92641177 | 2223 | .flags.experimental = 1, |
a5763f22 HMH |
2224 | }; |
2225 | ||
56b6aeb0 HMH |
2226 | /************************************************************************* |
2227 | * Backlight/brightness subdriver | |
2228 | */ | |
2229 | ||
2230 | static struct backlight_device *ibm_backlight_device = NULL; | |
2231 | ||
2232 | static struct backlight_ops ibm_backlight_data = { | |
2233 | .get_brightness = brightness_get, | |
2234 | .update_status = brightness_update_status, | |
2235 | }; | |
2236 | ||
a5763f22 | 2237 | static int __init brightness_init(struct ibm_init_struct *iibm) |
56b6aeb0 HMH |
2238 | { |
2239 | int b; | |
2240 | ||
fe08bc4b HMH |
2241 | vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); |
2242 | ||
56b6aeb0 HMH |
2243 | b = brightness_get(NULL); |
2244 | if (b < 0) | |
2245 | return b; | |
2246 | ||
2247 | ibm_backlight_device = backlight_device_register("ibm", NULL, NULL, | |
2248 | &ibm_backlight_data); | |
2249 | if (IS_ERR(ibm_backlight_device)) { | |
2250 | printk(IBM_ERR "Could not register backlight device\n"); | |
2251 | return PTR_ERR(ibm_backlight_device); | |
2252 | } | |
fe08bc4b | 2253 | vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n"); |
56b6aeb0 HMH |
2254 | |
2255 | ibm_backlight_device->props.max_brightness = 7; | |
2256 | ibm_backlight_device->props.brightness = b; | |
2257 | backlight_update_status(ibm_backlight_device); | |
2258 | ||
2259 | return 0; | |
2260 | } | |
2261 | ||
2262 | static void brightness_exit(void) | |
2263 | { | |
2264 | if (ibm_backlight_device) { | |
fe08bc4b HMH |
2265 | vdbg_printk(TPACPI_DBG_EXIT, |
2266 | "calling backlight_device_unregister()\n"); | |
56b6aeb0 HMH |
2267 | backlight_device_unregister(ibm_backlight_device); |
2268 | ibm_backlight_device = NULL; | |
2269 | } | |
2270 | } | |
2271 | ||
2272 | static int brightness_update_status(struct backlight_device *bd) | |
2273 | { | |
2274 | return brightness_set( | |
2275 | (bd->props.fb_blank == FB_BLANK_UNBLANK && | |
2276 | bd->props.power == FB_BLANK_UNBLANK) ? | |
2277 | bd->props.brightness : 0); | |
2278 | } | |
2279 | ||
8acb0250 HM |
2280 | static int brightness_get(struct backlight_device *bd) |
2281 | { | |
8d297264 HMH |
2282 | u8 level; |
2283 | if (!acpi_ec_read(brightness_offset, &level)) | |
2284 | return -EIO; | |
8acb0250 | 2285 | |
8d297264 | 2286 | level &= 0x7; |
fb87a811 | 2287 | |
8d297264 | 2288 | return level; |
8acb0250 HM |
2289 | } |
2290 | ||
8acb0250 | 2291 | static int brightness_set(int value) |
1da177e4 | 2292 | { |
78f81cc4 | 2293 | int cmos_cmd, inc, i; |
8acb0250 HM |
2294 | int current_value = brightness_get(NULL); |
2295 | ||
2296 | value &= 7; | |
2297 | ||
56b6aeb0 | 2298 | cmos_cmd = value > current_value ? TP_CMOS_BRIGHTNESS_UP : TP_CMOS_BRIGHTNESS_DOWN; |
8acb0250 HM |
2299 | inc = value > current_value ? 1 : -1; |
2300 | for (i = current_value; i != value; i += inc) { | |
c9bea99c | 2301 | if (issue_thinkpad_cmos_command(cmos_cmd)) |
8acb0250 HM |
2302 | return -EIO; |
2303 | if (!acpi_ec_write(brightness_offset, i + inc)) | |
2304 | return -EIO; | |
2305 | } | |
2306 | ||
2307 | return 0; | |
2308 | } | |
2309 | ||
56b6aeb0 HMH |
2310 | static int brightness_read(char *p) |
2311 | { | |
2312 | int len = 0; | |
2313 | int level; | |
2314 | ||
2315 | if ((level = brightness_get(NULL)) < 0) { | |
2316 | len += sprintf(p + len, "level:\t\tunreadable\n"); | |
2317 | } else { | |
2318 | len += sprintf(p + len, "level:\t\t%d\n", level & 0x7); | |
2319 | len += sprintf(p + len, "commands:\tup, down\n"); | |
2320 | len += sprintf(p + len, "commands:\tlevel <level>" | |
2321 | " (<level> is 0-7)\n"); | |
2322 | } | |
2323 | ||
2324 | return len; | |
2325 | } | |
2326 | ||
8acb0250 HM |
2327 | static int brightness_write(char *buf) |
2328 | { | |
2329 | int level; | |
78f81cc4 | 2330 | int new_level; |
1da177e4 | 2331 | char *cmd; |
1da177e4 LT |
2332 | |
2333 | while ((cmd = next_cmd(&buf))) { | |
8acb0250 HM |
2334 | if ((level = brightness_get(NULL)) < 0) |
2335 | return level; | |
78f81cc4 BD |
2336 | level &= 7; |
2337 | ||
2338 | if (strlencmp(cmd, "up") == 0) { | |
2339 | new_level = level == 7 ? 7 : level + 1; | |
2340 | } else if (strlencmp(cmd, "down") == 0) { | |
2341 | new_level = level == 0 ? 0 : level - 1; | |
2342 | } else if (sscanf(cmd, "level %d", &new_level) == 1 && | |
2343 | new_level >= 0 && new_level <= 7) { | |
2344 | /* new_level set */ | |
2345 | } else | |
2346 | return -EINVAL; | |
2347 | ||
8acb0250 | 2348 | brightness_set(new_level); |
78f81cc4 BD |
2349 | } |
2350 | ||
2351 | return 0; | |
2352 | } | |
2353 | ||
a5763f22 HMH |
2354 | static struct ibm_struct brightness_driver_data = { |
2355 | .name = "brightness", | |
2356 | .read = brightness_read, | |
2357 | .write = brightness_write, | |
2358 | .exit = brightness_exit, | |
2359 | }; | |
2360 | ||
56b6aeb0 HMH |
2361 | /************************************************************************* |
2362 | * Volume subdriver | |
2363 | */ | |
fb87a811 | 2364 | |
78f81cc4 BD |
2365 | static int volume_read(char *p) |
2366 | { | |
2367 | int len = 0; | |
2368 | u8 level; | |
2369 | ||
2370 | if (!acpi_ec_read(volume_offset, &level)) { | |
2371 | len += sprintf(p + len, "level:\t\tunreadable\n"); | |
2372 | } else { | |
2373 | len += sprintf(p + len, "level:\t\t%d\n", level & 0xf); | |
2374 | len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6)); | |
2375 | len += sprintf(p + len, "commands:\tup, down, mute\n"); | |
2376 | len += sprintf(p + len, "commands:\tlevel <level>" | |
2377 | " (<level> is 0-15)\n"); | |
2378 | } | |
2379 | ||
2380 | return len; | |
2381 | } | |
2382 | ||
78f81cc4 BD |
2383 | static int volume_write(char *buf) |
2384 | { | |
2385 | int cmos_cmd, inc, i; | |
2386 | u8 level, mute; | |
2387 | int new_level, new_mute; | |
2388 | char *cmd; | |
2389 | ||
2390 | while ((cmd = next_cmd(&buf))) { | |
2391 | if (!acpi_ec_read(volume_offset, &level)) | |
2392 | return -EIO; | |
2393 | new_mute = mute = level & 0x40; | |
2394 | new_level = level = level & 0xf; | |
2395 | ||
2396 | if (strlencmp(cmd, "up") == 0) { | |
2397 | if (mute) | |
2398 | new_mute = 0; | |
2399 | else | |
2400 | new_level = level == 15 ? 15 : level + 1; | |
2401 | } else if (strlencmp(cmd, "down") == 0) { | |
2402 | if (mute) | |
2403 | new_mute = 0; | |
2404 | else | |
2405 | new_level = level == 0 ? 0 : level - 1; | |
2406 | } else if (sscanf(cmd, "level %d", &new_level) == 1 && | |
2407 | new_level >= 0 && new_level <= 15) { | |
2408 | /* new_level set */ | |
2409 | } else if (strlencmp(cmd, "mute") == 0) { | |
2410 | new_mute = 0x40; | |
1da177e4 LT |
2411 | } else |
2412 | return -EINVAL; | |
2413 | ||
78f81cc4 | 2414 | if (new_level != level) { /* mute doesn't change */ |
56b6aeb0 | 2415 | cmos_cmd = new_level > level ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN; |
78f81cc4 BD |
2416 | inc = new_level > level ? 1 : -1; |
2417 | ||
c9bea99c | 2418 | if (mute && (issue_thinkpad_cmos_command(cmos_cmd) || |
78f81cc4 BD |
2419 | !acpi_ec_write(volume_offset, level))) |
2420 | return -EIO; | |
2421 | ||
2422 | for (i = level; i != new_level; i += inc) | |
c9bea99c | 2423 | if (issue_thinkpad_cmos_command(cmos_cmd) || |
78f81cc4 BD |
2424 | !acpi_ec_write(volume_offset, i + inc)) |
2425 | return -EIO; | |
2426 | ||
c9bea99c | 2427 | if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) || |
78f81cc4 BD |
2428 | !acpi_ec_write(volume_offset, |
2429 | new_level + mute))) | |
2430 | return -EIO; | |
2431 | } | |
2432 | ||
2433 | if (new_mute != mute) { /* level doesn't change */ | |
56b6aeb0 | 2434 | cmos_cmd = new_mute ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP; |
78f81cc4 | 2435 | |
c9bea99c | 2436 | if (issue_thinkpad_cmos_command(cmos_cmd) || |
78f81cc4 BD |
2437 | !acpi_ec_write(volume_offset, level + new_mute)) |
2438 | return -EIO; | |
2439 | } | |
2440 | } | |
2441 | ||
2442 | return 0; | |
2443 | } | |
2444 | ||
a5763f22 HMH |
2445 | static struct ibm_struct volume_driver_data = { |
2446 | .name = "volume", | |
2447 | .read = volume_read, | |
2448 | .write = volume_write, | |
2449 | }; | |
56b6aeb0 HMH |
2450 | |
2451 | /************************************************************************* | |
2452 | * Fan subdriver | |
2453 | */ | |
2454 | ||
2455 | /* | |
2456 | * FAN ACCESS MODES | |
2457 | * | |
efa27145 | 2458 | * TPACPI_FAN_RD_ACPI_GFAN: |
56b6aeb0 HMH |
2459 | * ACPI GFAN method: returns fan level |
2460 | * | |
efa27145 | 2461 | * see TPACPI_FAN_WR_ACPI_SFAN |
f51d1a39 | 2462 | * EC 0x2f (HFSP) not available if GFAN exists |
56b6aeb0 | 2463 | * |
efa27145 | 2464 | * TPACPI_FAN_WR_ACPI_SFAN: |
56b6aeb0 HMH |
2465 | * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) |
2466 | * | |
f51d1a39 HMH |
2467 | * EC 0x2f (HFSP) might be available *for reading*, but do not use |
2468 | * it for writing. | |
56b6aeb0 | 2469 | * |
efa27145 | 2470 | * TPACPI_FAN_WR_TPEC: |
f51d1a39 HMH |
2471 | * ThinkPad EC register 0x2f (HFSP): fan control loop mode |
2472 | * Supported on almost all ThinkPads | |
56b6aeb0 HMH |
2473 | * |
2474 | * Fan speed changes of any sort (including those caused by the | |
2475 | * disengaged mode) are usually done slowly by the firmware as the | |
2476 | * maximum ammount of fan duty cycle change per second seems to be | |
2477 | * limited. | |
2478 | * | |
2479 | * Reading is not available if GFAN exists. | |
2480 | * Writing is not available if SFAN exists. | |
2481 | * | |
2482 | * Bits | |
2483 | * 7 automatic mode engaged; | |
2484 | * (default operation mode of the ThinkPad) | |
2485 | * fan level is ignored in this mode. | |
f51d1a39 | 2486 | * 6 full speed mode (takes precedence over bit 7); |
56b6aeb0 | 2487 | * not available on all thinkpads. May disable |
f51d1a39 HMH |
2488 | * the tachometer while the fan controller ramps up |
2489 | * the speed (which can take up to a few *minutes*). | |
2490 | * Speeds up fan to 100% duty-cycle, which is far above | |
2491 | * the standard RPM levels. It is not impossible that | |
2492 | * it could cause hardware damage. | |
56b6aeb0 HMH |
2493 | * 5-3 unused in some models. Extra bits for fan level |
2494 | * in others, but still useless as all values above | |
2495 | * 7 map to the same speed as level 7 in these models. | |
2496 | * 2-0 fan level (0..7 usually) | |
2497 | * 0x00 = stop | |
2498 | * 0x07 = max (set when temperatures critical) | |
2499 | * Some ThinkPads may have other levels, see | |
efa27145 | 2500 | * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) |
56b6aeb0 HMH |
2501 | * |
2502 | * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at | |
2503 | * boot. Apparently the EC does not intialize it, so unless ACPI DSDT | |
2504 | * does so, its initial value is meaningless (0x07). | |
2505 | * | |
2506 | * For firmware bugs, refer to: | |
2507 | * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues | |
2508 | * | |
2509 | * ---- | |
2510 | * | |
2511 | * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): | |
2512 | * Main fan tachometer reading (in RPM) | |
2513 | * | |
2514 | * This register is present on all ThinkPads with a new-style EC, and | |
2515 | * it is known not to be present on the A21m/e, and T22, as there is | |
2516 | * something else in offset 0x84 according to the ACPI DSDT. Other | |
2517 | * ThinkPads from this same time period (and earlier) probably lack the | |
2518 | * tachometer as well. | |
2519 | * | |
2520 | * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare | |
2521 | * was never fixed by IBM to report the EC firmware version string | |
2522 | * probably support the tachometer (like the early X models), so | |
2523 | * detecting it is quite hard. We need more data to know for sure. | |
2524 | * | |
2525 | * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings | |
2526 | * might result. | |
2527 | * | |
f51d1a39 HMH |
2528 | * FIRMWARE BUG: may go stale while the EC is switching to full speed |
2529 | * mode. | |
56b6aeb0 HMH |
2530 | * |
2531 | * For firmware bugs, refer to: | |
2532 | * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues | |
2533 | * | |
efa27145 | 2534 | * TPACPI_FAN_WR_ACPI_FANS: |
56b6aeb0 HMH |
2535 | * ThinkPad X31, X40, X41. Not available in the X60. |
2536 | * | |
2537 | * FANS ACPI handle: takes three arguments: low speed, medium speed, | |
2538 | * high speed. ACPI DSDT seems to map these three speeds to levels | |
2539 | * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH | |
2540 | * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") | |
2541 | * | |
2542 | * The speeds are stored on handles | |
2543 | * (FANA:FAN9), (FANC:FANB), (FANE:FAND). | |
2544 | * | |
2545 | * There are three default speed sets, acessible as handles: | |
2546 | * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H | |
2547 | * | |
2548 | * ACPI DSDT switches which set is in use depending on various | |
2549 | * factors. | |
2550 | * | |
efa27145 | 2551 | * TPACPI_FAN_WR_TPEC is also available and should be used to |
56b6aeb0 HMH |
2552 | * command the fan. The X31/X40/X41 seems to have 8 fan levels, |
2553 | * but the ACPI tables just mention level 7. | |
2554 | */ | |
2555 | ||
69ba91cb HMH |
2556 | static enum fan_status_access_mode fan_status_access_mode; |
2557 | static enum fan_control_access_mode fan_control_access_mode; | |
2558 | static enum fan_control_commands fan_control_commands; | |
78f81cc4 | 2559 | |
778b4d74 HMH |
2560 | static u8 fan_control_initial_status; |
2561 | ||
25c68a33 | 2562 | static void fan_watchdog_fire(struct work_struct *ignored); |
16663a87 | 2563 | static int fan_watchdog_maxinterval; |
25c68a33 | 2564 | static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); |
16663a87 | 2565 | |
56b6aeb0 HMH |
2566 | IBM_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ |
2567 | IBM_HANDLE(gfan, ec, "GFAN", /* 570 */ | |
2568 | "\\FSPD", /* 600e/x, 770e, 770x */ | |
2569 | ); /* all others */ | |
2570 | IBM_HANDLE(sfan, ec, "SFAN", /* 570 */ | |
2571 | "JFNS", /* 770x-JL */ | |
2572 | ); /* all others */ | |
2573 | ||
a5763f22 | 2574 | static int __init fan_init(struct ibm_init_struct *iibm) |
78f81cc4 | 2575 | { |
fe08bc4b HMH |
2576 | vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n"); |
2577 | ||
efa27145 HMH |
2578 | fan_status_access_mode = TPACPI_FAN_NONE; |
2579 | fan_control_access_mode = TPACPI_FAN_WR_NONE; | |
69ba91cb | 2580 | fan_control_commands = 0; |
16663a87 | 2581 | fan_watchdog_maxinterval = 0; |
d8fd94d9 | 2582 | tp_features.fan_ctrl_status_undef = 0; |
78f81cc4 | 2583 | |
8d376cd6 HMH |
2584 | IBM_ACPIHANDLE_INIT(fans); |
2585 | IBM_ACPIHANDLE_INIT(gfan); | |
2586 | IBM_ACPIHANDLE_INIT(sfan); | |
5fba344c | 2587 | |
78f81cc4 BD |
2588 | if (gfan_handle) { |
2589 | /* 570, 600e/x, 770e, 770x */ | |
efa27145 | 2590 | fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; |
69ba91cb HMH |
2591 | } else { |
2592 | /* all other ThinkPads: note that even old-style | |
2593 | * ThinkPad ECs supports the fan control register */ | |
778b4d74 HMH |
2594 | if (likely(acpi_ec_read(fan_status_offset, |
2595 | &fan_control_initial_status))) { | |
efa27145 | 2596 | fan_status_access_mode = TPACPI_FAN_RD_TPEC; |
778b4d74 HMH |
2597 | |
2598 | /* In some ThinkPads, neither the EC nor the ACPI | |
2599 | * DSDT initialize the fan status, and it ends up | |
2600 | * being set to 0x07 when it *could* be either | |
2601 | * 0x07 or 0x80. | |
2602 | * | |
2603 | * Enable for TP-1Y (T43), TP-78 (R51e), | |
2604 | * TP-76 (R52), TP-70 (T43, R52), which are known | |
2605 | * to be buggy. */ | |
2606 | if (fan_control_initial_status == 0x07 && | |
2607 | ibm_thinkpad_ec_found && | |
2608 | ((ibm_thinkpad_ec_found[0] == '1' && | |
2609 | ibm_thinkpad_ec_found[1] == 'Y') || | |
2610 | (ibm_thinkpad_ec_found[0] == '7' && | |
2611 | (ibm_thinkpad_ec_found[1] == '6' || | |
2612 | ibm_thinkpad_ec_found[1] == '8' || | |
2613 | ibm_thinkpad_ec_found[1] == '0')) | |
2614 | )) { | |
2615 | printk(IBM_NOTICE | |
2616 | "fan_init: initial fan status is " | |
2617 | "unknown, assuming it is in auto " | |
2618 | "mode\n"); | |
d8fd94d9 | 2619 | tp_features.fan_ctrl_status_undef = 1; |
778b4d74 | 2620 | } |
69ba91cb HMH |
2621 | } else { |
2622 | printk(IBM_ERR | |
2623 | "ThinkPad ACPI EC access misbehaving, " | |
2624 | "fan status and control unavailable\n"); | |
5fba344c | 2625 | return 1; |
69ba91cb HMH |
2626 | } |
2627 | } | |
78f81cc4 | 2628 | |
69ba91cb HMH |
2629 | if (sfan_handle) { |
2630 | /* 570, 770x-JL */ | |
efa27145 | 2631 | fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; |
1c6a334e | 2632 | fan_control_commands |= |
efa27145 | 2633 | TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; |
78f81cc4 | 2634 | } else { |
69ba91cb HMH |
2635 | if (!gfan_handle) { |
2636 | /* gfan without sfan means no fan control */ | |
2637 | /* all other models implement TP EC 0x2f control */ | |
2638 | ||
2639 | if (fans_handle) { | |
a8b7a662 | 2640 | /* X31, X40, X41 */ |
69ba91cb | 2641 | fan_control_access_mode = |
efa27145 | 2642 | TPACPI_FAN_WR_ACPI_FANS; |
69ba91cb | 2643 | fan_control_commands |= |
efa27145 HMH |
2644 | TPACPI_FAN_CMD_SPEED | |
2645 | TPACPI_FAN_CMD_LEVEL | | |
2646 | TPACPI_FAN_CMD_ENABLE; | |
69ba91cb | 2647 | } else { |
efa27145 | 2648 | fan_control_access_mode = TPACPI_FAN_WR_TPEC; |
a12095c2 | 2649 | fan_control_commands |= |
efa27145 HMH |
2650 | TPACPI_FAN_CMD_LEVEL | |
2651 | TPACPI_FAN_CMD_ENABLE; | |
69ba91cb HMH |
2652 | } |
2653 | } | |
2654 | } | |
2655 | ||
fe08bc4b HMH |
2656 | vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n", |
2657 | str_supported(fan_status_access_mode != TPACPI_FAN_NONE || | |
2658 | fan_control_access_mode != TPACPI_FAN_WR_NONE), | |
2659 | fan_status_access_mode, fan_control_access_mode); | |
2660 | ||
5fba344c HMH |
2661 | return (fan_status_access_mode != TPACPI_FAN_NONE || |
2662 | fan_control_access_mode != TPACPI_FAN_WR_NONE)? | |
2663 | 0 : 1; | |
69ba91cb | 2664 | } |
78f81cc4 | 2665 | |
c52f0aa5 | 2666 | static int fan_get_status(u8 *status) |
78f81cc4 | 2667 | { |
c52f0aa5 | 2668 | u8 s; |
78f81cc4 | 2669 | |
a8b7a662 | 2670 | /* TODO: |
efa27145 | 2671 | * Add TPACPI_FAN_RD_ACPI_FANS ? */ |
a8b7a662 | 2672 | |
3ef8a609 | 2673 | switch (fan_status_access_mode) { |
efa27145 | 2674 | case TPACPI_FAN_RD_ACPI_GFAN: |
78f81cc4 | 2675 | /* 570, 600e/x, 770e, 770x */ |
c52f0aa5 HMH |
2676 | |
2677 | if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d"))) | |
1da177e4 | 2678 | return -EIO; |
78f81cc4 | 2679 | |
c52f0aa5 HMH |
2680 | if (likely(status)) |
2681 | *status = s & 0x07; | |
3ef8a609 HMH |
2682 | |
2683 | break; | |
2684 | ||
efa27145 | 2685 | case TPACPI_FAN_RD_TPEC: |
78f81cc4 | 2686 | /* all except 570, 600e/x, 770e, 770x */ |
c52f0aa5 | 2687 | if (unlikely(!acpi_ec_read(fan_status_offset, &s))) |
3ef8a609 | 2688 | return -EIO; |
78f81cc4 | 2689 | |
c52f0aa5 HMH |
2690 | if (likely(status)) |
2691 | *status = s; | |
2692 | ||
2693 | break; | |
2694 | ||
2695 | default: | |
2696 | return -ENXIO; | |
78f81cc4 BD |
2697 | } |
2698 | ||
c52f0aa5 HMH |
2699 | return 0; |
2700 | } | |
2701 | ||
56b6aeb0 HMH |
2702 | static void fan_exit(void) |
2703 | { | |
99fba3f8 | 2704 | vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n"); |
56b6aeb0 HMH |
2705 | cancel_delayed_work(&fan_watchdog_task); |
2706 | flush_scheduled_work(); | |
2707 | } | |
2708 | ||
c52f0aa5 HMH |
2709 | static int fan_get_speed(unsigned int *speed) |
2710 | { | |
2711 | u8 hi, lo; | |
2712 | ||
2713 | switch (fan_status_access_mode) { | |
efa27145 | 2714 | case TPACPI_FAN_RD_TPEC: |
78f81cc4 | 2715 | /* all except 570, 600e/x, 770e, 770x */ |
3ef8a609 HMH |
2716 | if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || |
2717 | !acpi_ec_read(fan_rpm_offset + 1, &hi))) | |
2718 | return -EIO; | |
3ef8a609 | 2719 | |
c52f0aa5 HMH |
2720 | if (likely(speed)) |
2721 | *speed = (hi << 8) | lo; | |
2722 | ||
2723 | break; | |
2724 | ||
2725 | default: | |
2726 | return -ENXIO; | |
2727 | } | |
2728 | ||
2729 | return 0; | |
2730 | } | |
2731 | ||
56b6aeb0 | 2732 | static void fan_watchdog_fire(struct work_struct *ignored) |
16663a87 | 2733 | { |
99fba3f8 HMH |
2734 | int rc; |
2735 | ||
56b6aeb0 | 2736 | printk(IBM_NOTICE "fan watchdog: enabling fan\n"); |
99fba3f8 HMH |
2737 | rc = fan_set_enable(); |
2738 | if (rc < 0) { | |
2739 | printk(IBM_ERR "fan watchdog: error %d while enabling fan, " | |
2740 | "will try again later...\n", -rc); | |
56b6aeb0 HMH |
2741 | /* reschedule for later */ |
2742 | fan_watchdog_reset(); | |
2743 | } | |
16663a87 HMH |
2744 | } |
2745 | ||
2746 | static void fan_watchdog_reset(void) | |
2747 | { | |
2748 | static int fan_watchdog_active = 0; | |
2749 | ||
2750 | if (fan_watchdog_active) | |
2751 | cancel_delayed_work(&fan_watchdog_task); | |
2752 | ||
2753 | if (fan_watchdog_maxinterval > 0) { | |
2754 | fan_watchdog_active = 1; | |
2755 | if (!schedule_delayed_work(&fan_watchdog_task, | |
2756 | msecs_to_jiffies(fan_watchdog_maxinterval | |
2757 | * 1000))) { | |
2758 | printk(IBM_ERR "failed to schedule the fan watchdog, " | |
2759 | "watchdog will not trigger\n"); | |
2760 | } | |
2761 | } else | |
2762 | fan_watchdog_active = 0; | |
2763 | } | |
2764 | ||
18ad7996 | 2765 | static int fan_set_level(int level) |
78f81cc4 | 2766 | { |
18ad7996 | 2767 | switch (fan_control_access_mode) { |
efa27145 | 2768 | case TPACPI_FAN_WR_ACPI_SFAN: |
18ad7996 | 2769 | if (level >= 0 && level <= 7) { |
78f81cc4 BD |
2770 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) |
2771 | return -EIO; | |
18ad7996 HMH |
2772 | } else |
2773 | return -EINVAL; | |
2774 | break; | |
2775 | ||
efa27145 HMH |
2776 | case TPACPI_FAN_WR_ACPI_FANS: |
2777 | case TPACPI_FAN_WR_TPEC: | |
2778 | if ((level != TP_EC_FAN_AUTO) && | |
2779 | (level != TP_EC_FAN_FULLSPEED) && | |
a12095c2 HMH |
2780 | ((level < 0) || (level > 7))) |
2781 | return -EINVAL; | |
2782 | ||
2783 | if (!acpi_ec_write(fan_status_offset, level)) | |
2784 | return -EIO; | |
778b4d74 | 2785 | else |
d8fd94d9 | 2786 | tp_features.fan_ctrl_status_undef = 0; |
a12095c2 HMH |
2787 | break; |
2788 | ||
18ad7996 HMH |
2789 | default: |
2790 | return -ENXIO; | |
2791 | } | |
2792 | return 0; | |
2793 | } | |
2794 | ||
2795 | static int fan_set_enable(void) | |
2796 | { | |
1c6a334e HMH |
2797 | u8 s; |
2798 | int rc; | |
2799 | ||
18ad7996 | 2800 | switch (fan_control_access_mode) { |
efa27145 HMH |
2801 | case TPACPI_FAN_WR_ACPI_FANS: |
2802 | case TPACPI_FAN_WR_TPEC: | |
1c6a334e HMH |
2803 | if ((rc = fan_get_status(&s)) < 0) |
2804 | return rc; | |
2805 | ||
2806 | /* Don't go out of emergency fan mode */ | |
2807 | if (s != 7) | |
efa27145 | 2808 | s = TP_EC_FAN_AUTO; |
1c6a334e HMH |
2809 | |
2810 | if (!acpi_ec_write(fan_status_offset, s)) | |
2811 | return -EIO; | |
778b4d74 | 2812 | else |
d8fd94d9 | 2813 | tp_features.fan_ctrl_status_undef = 0; |
1c6a334e HMH |
2814 | break; |
2815 | ||
efa27145 | 2816 | case TPACPI_FAN_WR_ACPI_SFAN: |
1c6a334e HMH |
2817 | if ((rc = fan_get_status(&s)) < 0) |
2818 | return rc; | |
2819 | ||
2820 | s &= 0x07; | |
2821 | ||
2822 | /* Set fan to at least level 4 */ | |
2823 | if (s < 4) | |
2824 | s = 4; | |
2825 | ||
2826 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) | |
18ad7996 HMH |
2827 | return -EIO; |
2828 | break; | |
2829 | ||
2830 | default: | |
2831 | return -ENXIO; | |
2832 | } | |
2833 | return 0; | |
2834 | } | |
2835 | ||
2836 | static int fan_set_disable(void) | |
2837 | { | |
2838 | switch (fan_control_access_mode) { | |
efa27145 HMH |
2839 | case TPACPI_FAN_WR_ACPI_FANS: |
2840 | case TPACPI_FAN_WR_TPEC: | |
18ad7996 HMH |
2841 | if (!acpi_ec_write(fan_status_offset, 0x00)) |
2842 | return -EIO; | |
778b4d74 | 2843 | else |
d8fd94d9 | 2844 | tp_features.fan_ctrl_status_undef = 0; |
18ad7996 HMH |
2845 | break; |
2846 | ||
efa27145 | 2847 | case TPACPI_FAN_WR_ACPI_SFAN: |
1c6a334e HMH |
2848 | if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) |
2849 | return -EIO; | |
2850 | break; | |
2851 | ||
18ad7996 HMH |
2852 | default: |
2853 | return -ENXIO; | |
2854 | } | |
56b6aeb0 HMH |
2855 | return 0; |
2856 | } | |
2857 | ||
2858 | static int fan_set_speed(int speed) | |
2859 | { | |
2860 | switch (fan_control_access_mode) { | |
efa27145 | 2861 | case TPACPI_FAN_WR_ACPI_FANS: |
56b6aeb0 HMH |
2862 | if (speed >= 0 && speed <= 65535) { |
2863 | if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", | |
2864 | speed, speed, speed)) | |
2865 | return -EIO; | |
2866 | } else | |
2867 | return -EINVAL; | |
2868 | break; | |
2869 | ||
2870 | default: | |
2871 | return -ENXIO; | |
2872 | } | |
2873 | return 0; | |
2874 | } | |
2875 | ||
2876 | static int fan_read(char *p) | |
2877 | { | |
2878 | int len = 0; | |
2879 | int rc; | |
2880 | u8 status; | |
2881 | unsigned int speed = 0; | |
2882 | ||
2883 | switch (fan_status_access_mode) { | |
efa27145 | 2884 | case TPACPI_FAN_RD_ACPI_GFAN: |
56b6aeb0 HMH |
2885 | /* 570, 600e/x, 770e, 770x */ |
2886 | if ((rc = fan_get_status(&status)) < 0) | |
2887 | return rc; | |
2888 | ||
2889 | len += sprintf(p + len, "status:\t\t%s\n" | |
2890 | "level:\t\t%d\n", | |
2891 | (status != 0) ? "enabled" : "disabled", status); | |
2892 | break; | |
2893 | ||
efa27145 | 2894 | case TPACPI_FAN_RD_TPEC: |
56b6aeb0 HMH |
2895 | /* all except 570, 600e/x, 770e, 770x */ |
2896 | if ((rc = fan_get_status(&status)) < 0) | |
2897 | return rc; | |
2898 | ||
d8fd94d9 | 2899 | if (unlikely(tp_features.fan_ctrl_status_undef)) { |
56b6aeb0 | 2900 | if (status != fan_control_initial_status) |
d8fd94d9 | 2901 | tp_features.fan_ctrl_status_undef = 0; |
56b6aeb0 HMH |
2902 | else |
2903 | /* Return most likely status. In fact, it | |
2904 | * might be the only possible status */ | |
efa27145 | 2905 | status = TP_EC_FAN_AUTO; |
56b6aeb0 HMH |
2906 | } |
2907 | ||
2908 | len += sprintf(p + len, "status:\t\t%s\n", | |
2909 | (status != 0) ? "enabled" : "disabled"); | |
2910 | ||
56b6aeb0 HMH |
2911 | if ((rc = fan_get_speed(&speed)) < 0) |
2912 | return rc; | |
2913 | ||
2914 | len += sprintf(p + len, "speed:\t\t%d\n", speed); | |
2915 | ||
efa27145 | 2916 | if (status & TP_EC_FAN_FULLSPEED) |
56b6aeb0 HMH |
2917 | /* Disengaged mode takes precedence */ |
2918 | len += sprintf(p + len, "level:\t\tdisengaged\n"); | |
efa27145 | 2919 | else if (status & TP_EC_FAN_AUTO) |
56b6aeb0 HMH |
2920 | len += sprintf(p + len, "level:\t\tauto\n"); |
2921 | else | |
2922 | len += sprintf(p + len, "level:\t\t%d\n", status); | |
2923 | break; | |
2924 | ||
efa27145 | 2925 | case TPACPI_FAN_NONE: |
56b6aeb0 HMH |
2926 | default: |
2927 | len += sprintf(p + len, "status:\t\tnot supported\n"); | |
2928 | } | |
2929 | ||
efa27145 | 2930 | if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { |
56b6aeb0 HMH |
2931 | len += sprintf(p + len, "commands:\tlevel <level>"); |
2932 | ||
2933 | switch (fan_control_access_mode) { | |
efa27145 | 2934 | case TPACPI_FAN_WR_ACPI_SFAN: |
56b6aeb0 HMH |
2935 | len += sprintf(p + len, " (<level> is 0-7)\n"); |
2936 | break; | |
2937 | ||
2938 | default: | |
2939 | len += sprintf(p + len, " (<level> is 0-7, " | |
2940 | "auto, disengaged)\n"); | |
2941 | break; | |
2942 | } | |
2943 | } | |
18ad7996 | 2944 | |
efa27145 | 2945 | if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) |
56b6aeb0 HMH |
2946 | len += sprintf(p + len, "commands:\tenable, disable\n" |
2947 | "commands:\twatchdog <timeout> (<timeout> is 0 (off), " | |
2948 | "1-120 (seconds))\n"); | |
1da177e4 | 2949 | |
efa27145 | 2950 | if (fan_control_commands & TPACPI_FAN_CMD_SPEED) |
56b6aeb0 HMH |
2951 | len += sprintf(p + len, "commands:\tspeed <speed>" |
2952 | " (<speed> is 0-65535)\n"); | |
2953 | ||
2954 | return len; | |
78f81cc4 BD |
2955 | } |
2956 | ||
18ad7996 HMH |
2957 | static int fan_write_cmd_level(const char *cmd, int *rc) |
2958 | { | |
2959 | int level; | |
2960 | ||
a12095c2 | 2961 | if (strlencmp(cmd, "level auto") == 0) |
efa27145 | 2962 | level = TP_EC_FAN_AUTO; |
a12095c2 | 2963 | else if (strlencmp(cmd, "level disengaged") == 0) |
efa27145 | 2964 | level = TP_EC_FAN_FULLSPEED; |
a12095c2 | 2965 | else if (sscanf(cmd, "level %d", &level) != 1) |
18ad7996 HMH |
2966 | return 0; |
2967 | ||
2968 | if ((*rc = fan_set_level(level)) == -ENXIO) | |
2969 | printk(IBM_ERR "level command accepted for unsupported " | |
2970 | "access mode %d", fan_control_access_mode); | |
2971 | ||
2972 | return 1; | |
2973 | } | |
2974 | ||
2975 | static int fan_write_cmd_enable(const char *cmd, int *rc) | |
2976 | { | |
2977 | if (strlencmp(cmd, "enable") != 0) | |
2978 | return 0; | |
2979 | ||
2980 | if ((*rc = fan_set_enable()) == -ENXIO) | |
2981 | printk(IBM_ERR "enable command accepted for unsupported " | |
2982 | "access mode %d", fan_control_access_mode); | |
2983 | ||
2984 | return 1; | |
2985 | } | |
2986 | ||
2987 | static int fan_write_cmd_disable(const char *cmd, int *rc) | |
2988 | { | |
2989 | if (strlencmp(cmd, "disable") != 0) | |
2990 | return 0; | |
2991 | ||
2992 | if ((*rc = fan_set_disable()) == -ENXIO) | |
2993 | printk(IBM_ERR "disable command accepted for unsupported " | |
2994 | "access mode %d", fan_control_access_mode); | |
2995 | ||
2996 | return 1; | |
2997 | } | |
2998 | ||
2999 | static int fan_write_cmd_speed(const char *cmd, int *rc) | |
3000 | { | |
3001 | int speed; | |
3002 | ||
a8b7a662 HMH |
3003 | /* TODO: |
3004 | * Support speed <low> <medium> <high> ? */ | |
3005 | ||
18ad7996 HMH |
3006 | if (sscanf(cmd, "speed %d", &speed) != 1) |
3007 | return 0; | |
3008 | ||
3009 | if ((*rc = fan_set_speed(speed)) == -ENXIO) | |
3010 | printk(IBM_ERR "speed command accepted for unsupported " | |
3011 | "access mode %d", fan_control_access_mode); | |
3012 | ||
3013 | return 1; | |
3014 | } | |
3015 | ||
16663a87 HMH |
3016 | static int fan_write_cmd_watchdog(const char *cmd, int *rc) |
3017 | { | |
3018 | int interval; | |
3019 | ||
3020 | if (sscanf(cmd, "watchdog %d", &interval) != 1) | |
3021 | return 0; | |
3022 | ||
3023 | if (interval < 0 || interval > 120) | |
3024 | *rc = -EINVAL; | |
3025 | else | |
3026 | fan_watchdog_maxinterval = interval; | |
3027 | ||
3028 | return 1; | |
3029 | } | |
3030 | ||
18ad7996 HMH |
3031 | static int fan_write(char *buf) |
3032 | { | |
3033 | char *cmd; | |
3034 | int rc = 0; | |
3035 | ||
3036 | while (!rc && (cmd = next_cmd(&buf))) { | |
efa27145 | 3037 | if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && |
18ad7996 | 3038 | fan_write_cmd_level(cmd, &rc)) && |
efa27145 | 3039 | !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && |
18ad7996 | 3040 | (fan_write_cmd_enable(cmd, &rc) || |
16663a87 HMH |
3041 | fan_write_cmd_disable(cmd, &rc) || |
3042 | fan_write_cmd_watchdog(cmd, &rc))) && | |
efa27145 | 3043 | !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && |
18ad7996 HMH |
3044 | fan_write_cmd_speed(cmd, &rc)) |
3045 | ) | |
3046 | rc = -EINVAL; | |
16663a87 HMH |
3047 | else if (!rc) |
3048 | fan_watchdog_reset(); | |
18ad7996 HMH |
3049 | } |
3050 | ||
3051 | return rc; | |
3052 | } | |
3053 | ||
a5763f22 HMH |
3054 | static struct ibm_struct fan_driver_data = { |
3055 | .name = "fan", | |
3056 | .read = fan_read, | |
3057 | .write = fan_write, | |
3058 | .exit = fan_exit, | |
92641177 | 3059 | .flags.experimental = 1, |
a5763f22 HMH |
3060 | }; |
3061 | ||
56b6aeb0 HMH |
3062 | /**************************************************************************** |
3063 | **************************************************************************** | |
3064 | * | |
3065 | * Infrastructure | |
3066 | * | |
3067 | **************************************************************************** | |
3068 | ****************************************************************************/ | |
3069 | ||
3070 | /* /proc support */ | |
3071 | static struct proc_dir_entry *proc_dir = NULL; | |
16663a87 | 3072 | |
56b6aeb0 | 3073 | /* Subdriver registry */ |
a5763f22 HMH |
3074 | static LIST_HEAD(tpacpi_all_drivers); |
3075 | ||
1da177e4 | 3076 | |
56b6aeb0 HMH |
3077 | /* |
3078 | * Module and infrastructure proble, init and exit handling | |
3079 | */ | |
1da177e4 | 3080 | |
fe08bc4b | 3081 | #ifdef CONFIG_THINKPAD_ACPI_DEBUG |
a5763f22 | 3082 | static const char * __init str_supported(int is_supported) |
fe08bc4b | 3083 | { |
a5763f22 | 3084 | static char text_unsupported[] __initdata = "not supported"; |
fe08bc4b | 3085 | |
a5763f22 | 3086 | return (is_supported)? &text_unsupported[4] : &text_unsupported[0]; |
fe08bc4b HMH |
3087 | } |
3088 | #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ | |
3089 | ||
a5763f22 | 3090 | static int __init ibm_init(struct ibm_init_struct *iibm) |
1da177e4 LT |
3091 | { |
3092 | int ret; | |
a5763f22 | 3093 | struct ibm_struct *ibm = iibm->data; |
1da177e4 LT |
3094 | struct proc_dir_entry *entry; |
3095 | ||
a5763f22 HMH |
3096 | BUG_ON(ibm == NULL); |
3097 | ||
3098 | INIT_LIST_HEAD(&ibm->all_drivers); | |
3099 | ||
92641177 | 3100 | if (ibm->flags.experimental && !experimental) |
1da177e4 LT |
3101 | return 0; |
3102 | ||
fe08bc4b HMH |
3103 | dbg_printk(TPACPI_DBG_INIT, |
3104 | "probing for %s\n", ibm->name); | |
3105 | ||
a5763f22 HMH |
3106 | if (iibm->init) { |
3107 | ret = iibm->init(iibm); | |
5fba344c HMH |
3108 | if (ret > 0) |
3109 | return 0; /* probe failed */ | |
3110 | if (ret) | |
1da177e4 | 3111 | return ret; |
a5763f22 | 3112 | |
92641177 | 3113 | ibm->flags.init_called = 1; |
1da177e4 LT |
3114 | } |
3115 | ||
8d376cd6 HMH |
3116 | if (ibm->acpi) { |
3117 | if (ibm->acpi->hid) { | |
3118 | ret = register_tpacpi_subdriver(ibm); | |
3119 | if (ret) | |
3120 | goto err_out; | |
3121 | } | |
5fba344c | 3122 | |
8d376cd6 HMH |
3123 | if (ibm->acpi->notify) { |
3124 | ret = setup_acpi_notify(ibm); | |
3125 | if (ret == -ENODEV) { | |
3126 | printk(IBM_NOTICE "disabling subdriver %s\n", | |
3127 | ibm->name); | |
3128 | ret = 0; | |
3129 | goto err_out; | |
3130 | } | |
3131 | if (ret < 0) | |
3132 | goto err_out; | |
5fba344c | 3133 | } |
5fba344c HMH |
3134 | } |
3135 | ||
fe08bc4b HMH |
3136 | dbg_printk(TPACPI_DBG_INIT, |
3137 | "%s installed\n", ibm->name); | |
3138 | ||
78f81cc4 BD |
3139 | if (ibm->read) { |
3140 | entry = create_proc_entry(ibm->name, | |
3141 | S_IFREG | S_IRUGO | S_IWUSR, | |
3142 | proc_dir); | |
3143 | if (!entry) { | |
3144 | printk(IBM_ERR "unable to create proc entry %s\n", | |
3145 | ibm->name); | |
5fba344c HMH |
3146 | ret = -ENODEV; |
3147 | goto err_out; | |
78f81cc4 BD |
3148 | } |
3149 | entry->owner = THIS_MODULE; | |
3150 | entry->data = ibm; | |
8d376cd6 | 3151 | entry->read_proc = &dispatch_procfs_read; |
78f81cc4 | 3152 | if (ibm->write) |
8d376cd6 | 3153 | entry->write_proc = &dispatch_procfs_write; |
92641177 | 3154 | ibm->flags.proc_created = 1; |
78f81cc4 | 3155 | } |
1da177e4 | 3156 | |
a5763f22 HMH |
3157 | list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); |
3158 | ||
1da177e4 | 3159 | return 0; |
5fba344c HMH |
3160 | |
3161 | err_out: | |
fe08bc4b HMH |
3162 | dbg_printk(TPACPI_DBG_INIT, |
3163 | "%s: at error exit path with result %d\n", | |
3164 | ibm->name, ret); | |
3165 | ||
5fba344c HMH |
3166 | ibm_exit(ibm); |
3167 | return (ret < 0)? ret : 0; | |
1da177e4 LT |
3168 | } |
3169 | ||
3170 | static void ibm_exit(struct ibm_struct *ibm) | |
3171 | { | |
fe08bc4b | 3172 | dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); |
a5763f22 HMH |
3173 | |
3174 | list_del_init(&ibm->all_drivers); | |
3175 | ||
8d376cd6 | 3176 | if (ibm->flags.acpi_notify_installed) { |
fe08bc4b HMH |
3177 | dbg_printk(TPACPI_DBG_EXIT, |
3178 | "%s: acpi_remove_notify_handler\n", ibm->name); | |
8d376cd6 HMH |
3179 | BUG_ON(!ibm->acpi); |
3180 | acpi_remove_notify_handler(*ibm->acpi->handle, | |
3181 | ibm->acpi->type, | |
3182 | dispatch_acpi_notify); | |
3183 | ibm->flags.acpi_notify_installed = 0; | |
3184 | ibm->flags.acpi_notify_installed = 0; | |
5fba344c | 3185 | } |
1da177e4 | 3186 | |
92641177 | 3187 | if (ibm->flags.proc_created) { |
fe08bc4b HMH |
3188 | dbg_printk(TPACPI_DBG_EXIT, |
3189 | "%s: remove_proc_entry\n", ibm->name); | |
1da177e4 | 3190 | remove_proc_entry(ibm->name, proc_dir); |
92641177 | 3191 | ibm->flags.proc_created = 0; |
5fba344c | 3192 | } |
1da177e4 | 3193 | |
8d376cd6 | 3194 | if (ibm->flags.acpi_driver_registered) { |
fe08bc4b HMH |
3195 | dbg_printk(TPACPI_DBG_EXIT, |
3196 | "%s: acpi_bus_unregister_driver\n", ibm->name); | |
8d376cd6 HMH |
3197 | BUG_ON(!ibm->acpi); |
3198 | acpi_bus_unregister_driver(ibm->acpi->driver); | |
3199 | kfree(ibm->acpi->driver); | |
3200 | ibm->acpi->driver = NULL; | |
3201 | ibm->flags.acpi_driver_registered = 0; | |
5fba344c HMH |
3202 | } |
3203 | ||
92641177 | 3204 | if (ibm->flags.init_called && ibm->exit) { |
5fba344c | 3205 | ibm->exit(); |
92641177 | 3206 | ibm->flags.init_called = 0; |
1da177e4 | 3207 | } |
a5763f22 HMH |
3208 | |
3209 | dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); | |
1da177e4 LT |
3210 | } |
3211 | ||
56b6aeb0 HMH |
3212 | /* Probing */ |
3213 | ||
3214 | static char *ibm_thinkpad_ec_found = NULL; | |
3215 | ||
3216 | static char* __init check_dmi_for_ec(void) | |
1da177e4 | 3217 | { |
56b6aeb0 HMH |
3218 | struct dmi_device *dev = NULL; |
3219 | char ec_fw_string[18]; | |
1da177e4 | 3220 | |
56b6aeb0 HMH |
3221 | /* |
3222 | * ThinkPad T23 or newer, A31 or newer, R50e or newer, | |
3223 | * X32 or newer, all Z series; Some models must have an | |
3224 | * up-to-date BIOS or they will not be detected. | |
3225 | * | |
3226 | * See http://thinkwiki.org/wiki/List_of_DMI_IDs | |
3227 | */ | |
3228 | while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { | |
3229 | if (sscanf(dev->name, | |
3230 | "IBM ThinkPad Embedded Controller -[%17c", | |
3231 | ec_fw_string) == 1) { | |
3232 | ec_fw_string[sizeof(ec_fw_string) - 1] = 0; | |
3233 | ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; | |
3234 | return kstrdup(ec_fw_string, GFP_KERNEL); | |
78f81cc4 | 3235 | } |
1da177e4 | 3236 | } |
56b6aeb0 | 3237 | return NULL; |
1da177e4 LT |
3238 | } |
3239 | ||
5fba344c HMH |
3240 | static int __init probe_for_thinkpad(void) |
3241 | { | |
3242 | int is_thinkpad; | |
3243 | ||
3244 | if (acpi_disabled) | |
3245 | return -ENODEV; | |
3246 | ||
3247 | /* | |
3248 | * Non-ancient models have better DMI tagging, but very old models | |
3249 | * don't. | |
3250 | */ | |
3251 | is_thinkpad = dmi_name_in_vendors("ThinkPad"); | |
3252 | ||
3253 | /* ec is required because many other handles are relative to it */ | |
8d376cd6 | 3254 | IBM_ACPIHANDLE_INIT(ec); |
5fba344c HMH |
3255 | if (!ec_handle) { |
3256 | if (is_thinkpad) | |
3257 | printk(IBM_ERR | |
3258 | "Not yet supported ThinkPad detected!\n"); | |
3259 | return -ENODEV; | |
3260 | } | |
3261 | ||
0dcef77c HMH |
3262 | /* |
3263 | * Risks a regression on very old machines, but reduces potential | |
3264 | * false positives a damn great deal | |
3265 | */ | |
3266 | if (!is_thinkpad) | |
3267 | is_thinkpad = dmi_name_in_vendors("IBM"); | |
3268 | ||
3269 | if (!is_thinkpad && !force_load) | |
3270 | return -ENODEV; | |
3271 | ||
5fba344c HMH |
3272 | return 0; |
3273 | } | |
3274 | ||
3275 | ||
56b6aeb0 | 3276 | /* Module init, exit, parameters */ |
1da177e4 | 3277 | |
a5763f22 HMH |
3278 | static struct ibm_init_struct ibms_init[] __initdata = { |
3279 | { | |
3280 | .init = thinkpad_acpi_driver_init, | |
3281 | .data = &thinkpad_acpi_driver_data, | |
3282 | }, | |
3283 | { | |
3284 | .init = hotkey_init, | |
3285 | .data = &hotkey_driver_data, | |
3286 | }, | |
3287 | { | |
3288 | .init = bluetooth_init, | |
3289 | .data = &bluetooth_driver_data, | |
3290 | }, | |
3291 | { | |
3292 | .init = wan_init, | |
3293 | .data = &wan_driver_data, | |
3294 | }, | |
3295 | { | |
3296 | .init = video_init, | |
3297 | .data = &video_driver_data, | |
3298 | }, | |
3299 | { | |
3300 | .init = light_init, | |
3301 | .data = &light_driver_data, | |
3302 | }, | |
3303 | #ifdef CONFIG_THINKPAD_ACPI_DOCK | |
3304 | { | |
3305 | .init = dock_init, | |
3306 | .data = &dock_driver_data[0], | |
3307 | }, | |
3308 | { | |
3309 | .data = &dock_driver_data[1], | |
3310 | }, | |
3311 | #endif | |
3312 | #ifdef CONFIG_THINKPAD_ACPI_BAY | |
3313 | { | |
3314 | .init = bay_init, | |
3315 | .data = &bay_driver_data, | |
3316 | }, | |
3317 | #endif | |
3318 | { | |
3319 | .init = cmos_init, | |
3320 | .data = &cmos_driver_data, | |
3321 | }, | |
3322 | { | |
3323 | .init = led_init, | |
3324 | .data = &led_driver_data, | |
3325 | }, | |
3326 | { | |
3327 | .init = beep_init, | |
3328 | .data = &beep_driver_data, | |
3329 | }, | |
3330 | { | |
3331 | .init = thermal_init, | |
3332 | .data = &thermal_driver_data, | |
3333 | }, | |
3334 | { | |
3335 | .data = &ecdump_driver_data, | |
3336 | }, | |
3337 | { | |
3338 | .init = brightness_init, | |
3339 | .data = &brightness_driver_data, | |
3340 | }, | |
3341 | { | |
3342 | .data = &volume_driver_data, | |
3343 | }, | |
3344 | { | |
3345 | .init = fan_init, | |
3346 | .data = &fan_driver_data, | |
3347 | }, | |
3348 | }; | |
3349 | ||
3945ac36 | 3350 | static int __init set_ibm_param(const char *val, struct kernel_param *kp) |
1da177e4 LT |
3351 | { |
3352 | unsigned int i; | |
a5763f22 | 3353 | struct ibm_struct *ibm; |
1da177e4 | 3354 | |
a5763f22 HMH |
3355 | for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { |
3356 | ibm = ibms_init[i].data; | |
3357 | BUG_ON(ibm == NULL); | |
3358 | ||
3359 | if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { | |
3360 | if (strlen(val) > sizeof(ibms_init[i].param) - 2) | |
78f81cc4 | 3361 | return -ENOSPC; |
a5763f22 HMH |
3362 | strcpy(ibms_init[i].param, val); |
3363 | strcat(ibms_init[i].param, ","); | |
78f81cc4 BD |
3364 | return 0; |
3365 | } | |
a5763f22 | 3366 | } |
1da177e4 | 3367 | |
1da177e4 LT |
3368 | return -EINVAL; |
3369 | } | |
3370 | ||
56b6aeb0 HMH |
3371 | static int experimental; |
3372 | module_param(experimental, int, 0); | |
3373 | ||
132ce091 HMH |
3374 | static u32 dbg_level; |
3375 | module_param_named(debug, dbg_level, uint, 0); | |
3376 | ||
0dcef77c HMH |
3377 | static int force_load; |
3378 | module_param(force_load, int, 0); | |
3379 | ||
1da177e4 LT |
3380 | #define IBM_PARAM(feature) \ |
3381 | module_param_call(feature, set_ibm_param, NULL, NULL, 0) | |
3382 | ||
78f81cc4 BD |
3383 | IBM_PARAM(hotkey); |
3384 | IBM_PARAM(bluetooth); | |
3385 | IBM_PARAM(video); | |
3386 | IBM_PARAM(light); | |
85998248 | 3387 | #ifdef CONFIG_THINKPAD_ACPI_DOCK |
78f81cc4 | 3388 | IBM_PARAM(dock); |
63e5f248 | 3389 | #endif |
85998248 | 3390 | #ifdef CONFIG_THINKPAD_ACPI_BAY |
78f81cc4 | 3391 | IBM_PARAM(bay); |
85998248 | 3392 | #endif /* CONFIG_THINKPAD_ACPI_BAY */ |
78f81cc4 BD |
3393 | IBM_PARAM(cmos); |
3394 | IBM_PARAM(led); | |
3395 | IBM_PARAM(beep); | |
3396 | IBM_PARAM(ecdump); | |
3397 | IBM_PARAM(brightness); | |
3398 | IBM_PARAM(volume); | |
3399 | IBM_PARAM(fan); | |
3400 | ||
1def7115 | 3401 | static int __init thinkpad_acpi_module_init(void) |
1da177e4 LT |
3402 | { |
3403 | int ret, i; | |
3404 | ||
54ae1501 | 3405 | /* Driver-level probe */ |
5fba344c HMH |
3406 | ret = probe_for_thinkpad(); |
3407 | if (ret) | |
3408 | return ret; | |
1da177e4 | 3409 | |
54ae1501 | 3410 | /* Driver initialization */ |
60eb0b35 | 3411 | ibm_thinkpad_ec_found = check_dmi_for_ec(); |
8d376cd6 HMH |
3412 | IBM_ACPIHANDLE_INIT(ecrd); |
3413 | IBM_ACPIHANDLE_INIT(ecwr); | |
1da177e4 | 3414 | |
8d376cd6 | 3415 | proc_dir = proc_mkdir(IBM_PROC_DIR, acpi_root_dir); |
1da177e4 | 3416 | if (!proc_dir) { |
8d376cd6 | 3417 | printk(IBM_ERR "unable to create proc dir " IBM_PROC_DIR); |
1def7115 | 3418 | thinkpad_acpi_module_exit(); |
1da177e4 LT |
3419 | return -ENODEV; |
3420 | } | |
3421 | proc_dir->owner = THIS_MODULE; | |
78f81cc4 | 3422 | |
54ae1501 HMH |
3423 | ret = platform_driver_register(&tpacpi_pdriver); |
3424 | if (ret) { | |
3425 | printk(IBM_ERR "unable to register platform driver\n"); | |
3426 | thinkpad_acpi_module_exit(); | |
3427 | return ret; | |
3428 | } | |
176750d6 HMH |
3429 | ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); |
3430 | if (ret) { | |
3431 | printk(IBM_ERR "unable to create sysfs driver attributes\n"); | |
3432 | thinkpad_acpi_module_exit(); | |
3433 | return ret; | |
3434 | } | |
3435 | ||
54ae1501 HMH |
3436 | |
3437 | /* Device initialization */ | |
3438 | tpacpi_pdev = platform_device_register_simple(IBM_DRVR_NAME, -1, | |
3439 | NULL, 0); | |
3440 | if (IS_ERR(tpacpi_pdev)) { | |
3441 | ret = PTR_ERR(tpacpi_pdev); | |
3442 | tpacpi_pdev = NULL; | |
3443 | printk(IBM_ERR "unable to register platform device\n"); | |
3444 | thinkpad_acpi_module_exit(); | |
3445 | return ret; | |
3446 | } | |
3447 | tpacpi_hwmon = hwmon_device_register(&tpacpi_pdev->dev); | |
3448 | if (IS_ERR(tpacpi_hwmon)) { | |
3449 | ret = PTR_ERR(tpacpi_hwmon); | |
3450 | tpacpi_hwmon = NULL; | |
3451 | printk(IBM_ERR "unable to register hwmon device\n"); | |
3452 | thinkpad_acpi_module_exit(); | |
3453 | return ret; | |
3454 | } | |
a5763f22 HMH |
3455 | for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { |
3456 | ret = ibm_init(&ibms_init[i]); | |
3457 | if (ret >= 0 && *ibms_init[i].param) | |
3458 | ret = ibms_init[i].data->write(ibms_init[i].param); | |
1da177e4 | 3459 | if (ret < 0) { |
1def7115 | 3460 | thinkpad_acpi_module_exit(); |
1da177e4 LT |
3461 | return ret; |
3462 | } | |
3463 | } | |
3464 | ||
3465 | return 0; | |
3466 | } | |
3467 | ||
1def7115 | 3468 | static void thinkpad_acpi_module_exit(void) |
56b6aeb0 | 3469 | { |
a5763f22 HMH |
3470 | struct ibm_struct *ibm, *itmp; |
3471 | ||
3472 | list_for_each_entry_safe_reverse(ibm, itmp, | |
3473 | &tpacpi_all_drivers, | |
3474 | all_drivers) { | |
3475 | ibm_exit(ibm); | |
3476 | } | |
56b6aeb0 | 3477 | |
a5763f22 | 3478 | dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); |
56b6aeb0 | 3479 | |
54ae1501 HMH |
3480 | if (tpacpi_hwmon) |
3481 | hwmon_device_unregister(tpacpi_hwmon); | |
3482 | ||
3483 | if (tpacpi_pdev) | |
3484 | platform_device_unregister(tpacpi_pdev); | |
3485 | ||
176750d6 | 3486 | tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); |
54ae1501 HMH |
3487 | platform_driver_unregister(&tpacpi_pdriver); |
3488 | ||
56b6aeb0 | 3489 | if (proc_dir) |
8d376cd6 | 3490 | remove_proc_entry(IBM_PROC_DIR, acpi_root_dir); |
56b6aeb0 | 3491 | |
8d376cd6 | 3492 | kfree(ibm_thinkpad_ec_found); |
56b6aeb0 HMH |
3493 | } |
3494 | ||
1def7115 HMH |
3495 | module_init(thinkpad_acpi_module_init); |
3496 | module_exit(thinkpad_acpi_module_exit); |