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1da177e4 LT |
1 | /* |
2 | * acpi_thermal.c - ACPI Thermal Zone Driver ($Revision: 41 $) | |
3 | * | |
4 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> | |
5 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
6 | * | |
7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or (at | |
12 | * your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write to the Free Software Foundation, Inc., | |
21 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
22 | * | |
23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
24 | * | |
25 | * This driver fully implements the ACPI thermal policy as described in the | |
26 | * ACPI 2.0 Specification. | |
27 | * | |
28 | * TBD: 1. Implement passive cooling hysteresis. | |
29 | * 2. Enhance passive cooling (CPU) states/limit interface to support | |
30 | * concepts of 'multiple limiters', upper/lower limits, etc. | |
31 | * | |
32 | */ | |
33 | ||
34 | #include <linux/kernel.h> | |
35 | #include <linux/module.h> | |
0b5bfa1c | 36 | #include <linux/dmi.h> |
1da177e4 LT |
37 | #include <linux/init.h> |
38 | #include <linux/types.h> | |
39 | #include <linux/proc_fs.h> | |
cd354f1a | 40 | #include <linux/jiffies.h> |
1da177e4 LT |
41 | #include <linux/kmod.h> |
42 | #include <linux/seq_file.h> | |
10a0a8d4 | 43 | #include <linux/reboot.h> |
f6f5c45e | 44 | #include <linux/device.h> |
1da177e4 | 45 | #include <asm/uaccess.h> |
3f655ef8 | 46 | #include <linux/thermal.h> |
1da177e4 LT |
47 | #include <acpi/acpi_bus.h> |
48 | #include <acpi/acpi_drivers.h> | |
49 | ||
1da177e4 | 50 | #define ACPI_THERMAL_CLASS "thermal_zone" |
1da177e4 LT |
51 | #define ACPI_THERMAL_DEVICE_NAME "Thermal Zone" |
52 | #define ACPI_THERMAL_FILE_STATE "state" | |
53 | #define ACPI_THERMAL_FILE_TEMPERATURE "temperature" | |
54 | #define ACPI_THERMAL_FILE_TRIP_POINTS "trip_points" | |
55 | #define ACPI_THERMAL_FILE_COOLING_MODE "cooling_mode" | |
56 | #define ACPI_THERMAL_FILE_POLLING_FREQ "polling_frequency" | |
57 | #define ACPI_THERMAL_NOTIFY_TEMPERATURE 0x80 | |
58 | #define ACPI_THERMAL_NOTIFY_THRESHOLDS 0x81 | |
59 | #define ACPI_THERMAL_NOTIFY_DEVICES 0x82 | |
60 | #define ACPI_THERMAL_NOTIFY_CRITICAL 0xF0 | |
61 | #define ACPI_THERMAL_NOTIFY_HOT 0xF1 | |
62 | #define ACPI_THERMAL_MODE_ACTIVE 0x00 | |
1da177e4 LT |
63 | |
64 | #define ACPI_THERMAL_MAX_ACTIVE 10 | |
65 | #define ACPI_THERMAL_MAX_LIMIT_STR_LEN 65 | |
66 | ||
1da177e4 | 67 | #define _COMPONENT ACPI_THERMAL_COMPONENT |
f52fd66d | 68 | ACPI_MODULE_NAME("thermal"); |
1da177e4 | 69 | |
1cbf4c56 | 70 | MODULE_AUTHOR("Paul Diefenbaugh"); |
7cda93e0 | 71 | MODULE_DESCRIPTION("ACPI Thermal Zone Driver"); |
1da177e4 LT |
72 | MODULE_LICENSE("GPL"); |
73 | ||
f8707ec9 LB |
74 | static int act; |
75 | module_param(act, int, 0644); | |
3c1d36da | 76 | MODULE_PARM_DESC(act, "Disable or override all lowest active trip points."); |
f8707ec9 | 77 | |
c52a7419 LB |
78 | static int crt; |
79 | module_param(crt, int, 0644); | |
80 | MODULE_PARM_DESC(crt, "Disable or lower all critical trip points."); | |
81 | ||
1da177e4 | 82 | static int tzp; |
730ff34d | 83 | module_param(tzp, int, 0444); |
3c1d36da | 84 | MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds."); |
1da177e4 | 85 | |
f5487145 LB |
86 | static int nocrt; |
87 | module_param(nocrt, int, 0); | |
8c99fdce | 88 | MODULE_PARM_DESC(nocrt, "Set to take no action upon ACPI thermal zone critical trips points."); |
f5487145 | 89 | |
72b33ef8 LB |
90 | static int off; |
91 | module_param(off, int, 0); | |
3c1d36da | 92 | MODULE_PARM_DESC(off, "Set to disable ACPI thermal support."); |
72b33ef8 | 93 | |
a70cdc52 LB |
94 | static int psv; |
95 | module_param(psv, int, 0644); | |
3c1d36da | 96 | MODULE_PARM_DESC(psv, "Disable or override all passive trip points."); |
a70cdc52 | 97 | |
4be44fcd LB |
98 | static int acpi_thermal_add(struct acpi_device *device); |
99 | static int acpi_thermal_remove(struct acpi_device *device, int type); | |
5d9464a4 | 100 | static int acpi_thermal_resume(struct acpi_device *device); |
1da177e4 LT |
101 | static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file); |
102 | static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file); | |
103 | static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file); | |
1da177e4 | 104 | static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file); |
4be44fcd LB |
105 | static ssize_t acpi_thermal_write_cooling_mode(struct file *, |
106 | const char __user *, size_t, | |
107 | loff_t *); | |
1da177e4 | 108 | static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file); |
4be44fcd LB |
109 | static ssize_t acpi_thermal_write_polling(struct file *, const char __user *, |
110 | size_t, loff_t *); | |
1da177e4 | 111 | |
1ba90e3a TR |
112 | static const struct acpi_device_id thermal_device_ids[] = { |
113 | {ACPI_THERMAL_HID, 0}, | |
114 | {"", 0}, | |
115 | }; | |
116 | MODULE_DEVICE_TABLE(acpi, thermal_device_ids); | |
117 | ||
1da177e4 | 118 | static struct acpi_driver acpi_thermal_driver = { |
c2b6705b | 119 | .name = "thermal", |
4be44fcd | 120 | .class = ACPI_THERMAL_CLASS, |
1ba90e3a | 121 | .ids = thermal_device_ids, |
4be44fcd LB |
122 | .ops = { |
123 | .add = acpi_thermal_add, | |
124 | .remove = acpi_thermal_remove, | |
74ce1468 | 125 | .resume = acpi_thermal_resume, |
4be44fcd | 126 | }, |
1da177e4 LT |
127 | }; |
128 | ||
129 | struct acpi_thermal_state { | |
4be44fcd LB |
130 | u8 critical:1; |
131 | u8 hot:1; | |
132 | u8 passive:1; | |
133 | u8 active:1; | |
134 | u8 reserved:4; | |
135 | int active_index; | |
1da177e4 LT |
136 | }; |
137 | ||
138 | struct acpi_thermal_state_flags { | |
4be44fcd LB |
139 | u8 valid:1; |
140 | u8 enabled:1; | |
141 | u8 reserved:6; | |
1da177e4 LT |
142 | }; |
143 | ||
144 | struct acpi_thermal_critical { | |
145 | struct acpi_thermal_state_flags flags; | |
4be44fcd | 146 | unsigned long temperature; |
1da177e4 LT |
147 | }; |
148 | ||
149 | struct acpi_thermal_hot { | |
150 | struct acpi_thermal_state_flags flags; | |
4be44fcd | 151 | unsigned long temperature; |
1da177e4 LT |
152 | }; |
153 | ||
154 | struct acpi_thermal_passive { | |
155 | struct acpi_thermal_state_flags flags; | |
4be44fcd LB |
156 | unsigned long temperature; |
157 | unsigned long tc1; | |
158 | unsigned long tc2; | |
159 | unsigned long tsp; | |
160 | struct acpi_handle_list devices; | |
1da177e4 LT |
161 | }; |
162 | ||
163 | struct acpi_thermal_active { | |
164 | struct acpi_thermal_state_flags flags; | |
4be44fcd LB |
165 | unsigned long temperature; |
166 | struct acpi_handle_list devices; | |
1da177e4 LT |
167 | }; |
168 | ||
169 | struct acpi_thermal_trips { | |
170 | struct acpi_thermal_critical critical; | |
4be44fcd | 171 | struct acpi_thermal_hot hot; |
1da177e4 LT |
172 | struct acpi_thermal_passive passive; |
173 | struct acpi_thermal_active active[ACPI_THERMAL_MAX_ACTIVE]; | |
174 | }; | |
175 | ||
176 | struct acpi_thermal_flags { | |
4be44fcd LB |
177 | u8 cooling_mode:1; /* _SCP */ |
178 | u8 devices:1; /* _TZD */ | |
179 | u8 reserved:6; | |
1da177e4 LT |
180 | }; |
181 | ||
182 | struct acpi_thermal { | |
8348e1b1 | 183 | struct acpi_device * device; |
4be44fcd LB |
184 | acpi_bus_id name; |
185 | unsigned long temperature; | |
186 | unsigned long last_temperature; | |
187 | unsigned long polling_frequency; | |
4be44fcd | 188 | volatile u8 zombie; |
1da177e4 LT |
189 | struct acpi_thermal_flags flags; |
190 | struct acpi_thermal_state state; | |
191 | struct acpi_thermal_trips trips; | |
4be44fcd | 192 | struct acpi_handle_list devices; |
3f655ef8 ZR |
193 | struct thermal_zone_device *thermal_zone; |
194 | int tz_enabled; | |
6e215785 | 195 | struct mutex lock; |
1da177e4 LT |
196 | }; |
197 | ||
d7508032 | 198 | static const struct file_operations acpi_thermal_state_fops = { |
cf7acfab | 199 | .owner = THIS_MODULE, |
4be44fcd LB |
200 | .open = acpi_thermal_state_open_fs, |
201 | .read = seq_read, | |
202 | .llseek = seq_lseek, | |
203 | .release = single_release, | |
1da177e4 LT |
204 | }; |
205 | ||
d7508032 | 206 | static const struct file_operations acpi_thermal_temp_fops = { |
cf7acfab | 207 | .owner = THIS_MODULE, |
4be44fcd LB |
208 | .open = acpi_thermal_temp_open_fs, |
209 | .read = seq_read, | |
210 | .llseek = seq_lseek, | |
211 | .release = single_release, | |
1da177e4 LT |
212 | }; |
213 | ||
d7508032 | 214 | static const struct file_operations acpi_thermal_trip_fops = { |
cf7acfab | 215 | .owner = THIS_MODULE, |
4be44fcd LB |
216 | .open = acpi_thermal_trip_open_fs, |
217 | .read = seq_read, | |
4be44fcd LB |
218 | .llseek = seq_lseek, |
219 | .release = single_release, | |
1da177e4 LT |
220 | }; |
221 | ||
d7508032 | 222 | static const struct file_operations acpi_thermal_cooling_fops = { |
cf7acfab | 223 | .owner = THIS_MODULE, |
4be44fcd LB |
224 | .open = acpi_thermal_cooling_open_fs, |
225 | .read = seq_read, | |
226 | .write = acpi_thermal_write_cooling_mode, | |
227 | .llseek = seq_lseek, | |
228 | .release = single_release, | |
1da177e4 LT |
229 | }; |
230 | ||
d7508032 | 231 | static const struct file_operations acpi_thermal_polling_fops = { |
cf7acfab | 232 | .owner = THIS_MODULE, |
4be44fcd LB |
233 | .open = acpi_thermal_polling_open_fs, |
234 | .read = seq_read, | |
235 | .write = acpi_thermal_write_polling, | |
236 | .llseek = seq_lseek, | |
237 | .release = single_release, | |
1da177e4 LT |
238 | }; |
239 | ||
240 | /* -------------------------------------------------------------------------- | |
241 | Thermal Zone Management | |
242 | -------------------------------------------------------------------------- */ | |
243 | ||
4be44fcd | 244 | static int acpi_thermal_get_temperature(struct acpi_thermal *tz) |
1da177e4 | 245 | { |
4be44fcd | 246 | acpi_status status = AE_OK; |
27663c58 | 247 | unsigned long long tmp; |
1da177e4 LT |
248 | |
249 | if (!tz) | |
d550d98d | 250 | return -EINVAL; |
1da177e4 LT |
251 | |
252 | tz->last_temperature = tz->temperature; | |
253 | ||
27663c58 | 254 | status = acpi_evaluate_integer(tz->device->handle, "_TMP", NULL, &tmp); |
1da177e4 | 255 | if (ACPI_FAILURE(status)) |
d550d98d | 256 | return -ENODEV; |
1da177e4 | 257 | |
27663c58 | 258 | tz->temperature = tmp; |
4be44fcd LB |
259 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Temperature is %lu dK\n", |
260 | tz->temperature)); | |
1da177e4 | 261 | |
d550d98d | 262 | return 0; |
1da177e4 LT |
263 | } |
264 | ||
4be44fcd | 265 | static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz) |
1da177e4 | 266 | { |
4be44fcd | 267 | acpi_status status = AE_OK; |
27663c58 | 268 | unsigned long long tmp; |
1da177e4 LT |
269 | |
270 | if (!tz) | |
d550d98d | 271 | return -EINVAL; |
1da177e4 | 272 | |
27663c58 | 273 | status = acpi_evaluate_integer(tz->device->handle, "_TZP", NULL, &tmp); |
1da177e4 | 274 | if (ACPI_FAILURE(status)) |
d550d98d | 275 | return -ENODEV; |
1da177e4 | 276 | |
27663c58 | 277 | tz->polling_frequency = tmp; |
4be44fcd LB |
278 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Polling frequency is %lu dS\n", |
279 | tz->polling_frequency)); | |
1da177e4 | 280 | |
d550d98d | 281 | return 0; |
1da177e4 LT |
282 | } |
283 | ||
4be44fcd | 284 | static int acpi_thermal_set_polling(struct acpi_thermal *tz, int seconds) |
1da177e4 | 285 | { |
1da177e4 LT |
286 | |
287 | if (!tz) | |
d550d98d | 288 | return -EINVAL; |
1da177e4 LT |
289 | |
290 | tz->polling_frequency = seconds * 10; /* Convert value to deci-seconds */ | |
291 | ||
b1569e99 MG |
292 | tz->thermal_zone->polling_delay = seconds * 1000; |
293 | ||
294 | if (tz->tz_enabled) | |
295 | thermal_zone_device_update(tz->thermal_zone); | |
296 | ||
4be44fcd LB |
297 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
298 | "Polling frequency set to %lu seconds\n", | |
636cedf9 | 299 | tz->polling_frequency/10)); |
1da177e4 | 300 | |
d550d98d | 301 | return 0; |
1da177e4 LT |
302 | } |
303 | ||
4be44fcd | 304 | static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode) |
1da177e4 | 305 | { |
4be44fcd LB |
306 | acpi_status status = AE_OK; |
307 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
308 | struct acpi_object_list arg_list = { 1, &arg0 }; | |
309 | acpi_handle handle = NULL; | |
1da177e4 | 310 | |
1da177e4 LT |
311 | |
312 | if (!tz) | |
d550d98d | 313 | return -EINVAL; |
1da177e4 | 314 | |
38ba7c9e | 315 | status = acpi_get_handle(tz->device->handle, "_SCP", &handle); |
1da177e4 LT |
316 | if (ACPI_FAILURE(status)) { |
317 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n")); | |
d550d98d | 318 | return -ENODEV; |
1da177e4 LT |
319 | } |
320 | ||
321 | arg0.integer.value = mode; | |
322 | ||
323 | status = acpi_evaluate_object(handle, NULL, &arg_list, NULL); | |
324 | if (ACPI_FAILURE(status)) | |
d550d98d | 325 | return -ENODEV; |
1da177e4 | 326 | |
d550d98d | 327 | return 0; |
1da177e4 LT |
328 | } |
329 | ||
ce44e197 ZR |
330 | #define ACPI_TRIPS_CRITICAL 0x01 |
331 | #define ACPI_TRIPS_HOT 0x02 | |
332 | #define ACPI_TRIPS_PASSIVE 0x04 | |
333 | #define ACPI_TRIPS_ACTIVE 0x08 | |
334 | #define ACPI_TRIPS_DEVICES 0x10 | |
1da177e4 | 335 | |
ce44e197 ZR |
336 | #define ACPI_TRIPS_REFRESH_THRESHOLDS (ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE) |
337 | #define ACPI_TRIPS_REFRESH_DEVICES ACPI_TRIPS_DEVICES | |
1da177e4 | 338 | |
ce44e197 ZR |
339 | #define ACPI_TRIPS_INIT (ACPI_TRIPS_CRITICAL | ACPI_TRIPS_HOT | \ |
340 | ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE | \ | |
341 | ACPI_TRIPS_DEVICES) | |
1da177e4 | 342 | |
ce44e197 ZR |
343 | /* |
344 | * This exception is thrown out in two cases: | |
345 | * 1.An invalid trip point becomes invalid or a valid trip point becomes invalid | |
346 | * when re-evaluating the AML code. | |
347 | * 2.TODO: Devices listed in _PSL, _ALx, _TZD may change. | |
348 | * We need to re-bind the cooling devices of a thermal zone when this occurs. | |
349 | */ | |
350 | #define ACPI_THERMAL_TRIPS_EXCEPTION(flags, str) \ | |
351 | do { \ | |
352 | if (flags != ACPI_TRIPS_INIT) \ | |
353 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, \ | |
354 | "ACPI thermal trip point %s changed\n" \ | |
355 | "Please send acpidump to linux-acpi@vger.kernel.org\n", str)); \ | |
356 | } while (0) | |
357 | ||
358 | static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) | |
359 | { | |
360 | acpi_status status = AE_OK; | |
27663c58 | 361 | unsigned long long tmp; |
ce44e197 ZR |
362 | struct acpi_handle_list devices; |
363 | int valid = 0; | |
364 | int i; | |
1da177e4 | 365 | |
ce44e197 ZR |
366 | /* Critical Shutdown (required) */ |
367 | if (flag & ACPI_TRIPS_CRITICAL) { | |
368 | status = acpi_evaluate_integer(tz->device->handle, | |
27663c58 MW |
369 | "_CRT", NULL, &tmp); |
370 | tz->trips.critical.temperature = tmp; | |
a39a2d7c AV |
371 | /* |
372 | * Treat freezing temperatures as invalid as well; some | |
373 | * BIOSes return really low values and cause reboots at startup. | |
b731d7b6 | 374 | * Below zero (Celsius) values clearly aren't right for sure.. |
a39a2d7c AV |
375 | * ... so lets discard those as invalid. |
376 | */ | |
377 | if (ACPI_FAILURE(status) || | |
378 | tz->trips.critical.temperature <= 2732) { | |
c52a7419 | 379 | tz->trips.critical.flags.valid = 0; |
ce44e197 | 380 | ACPI_EXCEPTION((AE_INFO, status, |
a39a2d7c | 381 | "No or invalid critical threshold")); |
ce44e197 ZR |
382 | return -ENODEV; |
383 | } else { | |
384 | tz->trips.critical.flags.valid = 1; | |
385 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
386 | "Found critical threshold [%lu]\n", | |
387 | tz->trips.critical.temperature)); | |
388 | } | |
389 | if (tz->trips.critical.flags.valid == 1) { | |
390 | if (crt == -1) { | |
391 | tz->trips.critical.flags.valid = 0; | |
392 | } else if (crt > 0) { | |
393 | unsigned long crt_k = CELSIUS_TO_KELVIN(crt); | |
394 | /* | |
22a94d79 | 395 | * Allow override critical threshold |
ce44e197 | 396 | */ |
22a94d79 ZR |
397 | if (crt_k > tz->trips.critical.temperature) |
398 | printk(KERN_WARNING PREFIX | |
399 | "Critical threshold %d C\n", crt); | |
400 | tz->trips.critical.temperature = crt_k; | |
ce44e197 | 401 | } |
c52a7419 LB |
402 | } |
403 | } | |
404 | ||
1da177e4 | 405 | /* Critical Sleep (optional) */ |
ce44e197 | 406 | if (flag & ACPI_TRIPS_HOT) { |
a70cdc52 | 407 | status = acpi_evaluate_integer(tz->device->handle, |
27663c58 | 408 | "_HOT", NULL, &tmp); |
ce44e197 ZR |
409 | if (ACPI_FAILURE(status)) { |
410 | tz->trips.hot.flags.valid = 0; | |
411 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
412 | "No hot threshold\n")); | |
413 | } else { | |
27663c58 | 414 | tz->trips.hot.temperature = tmp; |
ce44e197 ZR |
415 | tz->trips.hot.flags.valid = 1; |
416 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
417 | "Found hot threshold [%lu]\n", | |
418 | tz->trips.critical.temperature)); | |
419 | } | |
a70cdc52 LB |
420 | } |
421 | ||
ce44e197 | 422 | /* Passive (optional) */ |
0e4240d9 ZR |
423 | if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips.passive.flags.valid) || |
424 | (flag == ACPI_TRIPS_INIT)) { | |
ce44e197 ZR |
425 | valid = tz->trips.passive.flags.valid; |
426 | if (psv == -1) { | |
427 | status = AE_SUPPORT; | |
428 | } else if (psv > 0) { | |
27663c58 | 429 | tmp = CELSIUS_TO_KELVIN(psv); |
ce44e197 ZR |
430 | status = AE_OK; |
431 | } else { | |
432 | status = acpi_evaluate_integer(tz->device->handle, | |
27663c58 | 433 | "_PSV", NULL, &tmp); |
ce44e197 | 434 | } |
1da177e4 | 435 | |
1da177e4 LT |
436 | if (ACPI_FAILURE(status)) |
437 | tz->trips.passive.flags.valid = 0; | |
ce44e197 | 438 | else { |
27663c58 | 439 | tz->trips.passive.temperature = tmp; |
ce44e197 ZR |
440 | tz->trips.passive.flags.valid = 1; |
441 | if (flag == ACPI_TRIPS_INIT) { | |
442 | status = acpi_evaluate_integer( | |
443 | tz->device->handle, "_TC1", | |
27663c58 | 444 | NULL, &tmp); |
ce44e197 ZR |
445 | if (ACPI_FAILURE(status)) |
446 | tz->trips.passive.flags.valid = 0; | |
27663c58 MW |
447 | else |
448 | tz->trips.passive.tc1 = tmp; | |
ce44e197 ZR |
449 | status = acpi_evaluate_integer( |
450 | tz->device->handle, "_TC2", | |
27663c58 | 451 | NULL, &tmp); |
ce44e197 ZR |
452 | if (ACPI_FAILURE(status)) |
453 | tz->trips.passive.flags.valid = 0; | |
27663c58 MW |
454 | else |
455 | tz->trips.passive.tc2 = tmp; | |
ce44e197 ZR |
456 | status = acpi_evaluate_integer( |
457 | tz->device->handle, "_TSP", | |
27663c58 | 458 | NULL, &tmp); |
ce44e197 ZR |
459 | if (ACPI_FAILURE(status)) |
460 | tz->trips.passive.flags.valid = 0; | |
27663c58 MW |
461 | else |
462 | tz->trips.passive.tsp = tmp; | |
ce44e197 ZR |
463 | } |
464 | } | |
465 | } | |
466 | if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.passive.flags.valid) { | |
467 | memset(&devices, 0, sizeof(struct acpi_handle_list)); | |
468 | status = acpi_evaluate_reference(tz->device->handle, "_PSL", | |
469 | NULL, &devices); | |
0e4240d9 ZR |
470 | if (ACPI_FAILURE(status)) { |
471 | printk(KERN_WARNING PREFIX | |
472 | "Invalid passive threshold\n"); | |
1da177e4 | 473 | tz->trips.passive.flags.valid = 0; |
0e4240d9 | 474 | } |
1da177e4 | 475 | else |
ce44e197 | 476 | tz->trips.passive.flags.valid = 1; |
1da177e4 | 477 | |
ce44e197 ZR |
478 | if (memcmp(&tz->trips.passive.devices, &devices, |
479 | sizeof(struct acpi_handle_list))) { | |
480 | memcpy(&tz->trips.passive.devices, &devices, | |
481 | sizeof(struct acpi_handle_list)); | |
482 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); | |
483 | } | |
484 | } | |
485 | if ((flag & ACPI_TRIPS_PASSIVE) || (flag & ACPI_TRIPS_DEVICES)) { | |
486 | if (valid != tz->trips.passive.flags.valid) | |
487 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "state"); | |
488 | } | |
1da177e4 | 489 | |
ce44e197 | 490 | /* Active (optional) */ |
4be44fcd | 491 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { |
4be44fcd | 492 | char name[5] = { '_', 'A', 'C', ('0' + i), '\0' }; |
ce44e197 | 493 | valid = tz->trips.active[i].flags.valid; |
1da177e4 | 494 | |
f8707ec9 | 495 | if (act == -1) |
ce44e197 ZR |
496 | break; /* disable all active trip points */ |
497 | ||
0e4240d9 ZR |
498 | if ((flag == ACPI_TRIPS_INIT) || ((flag & ACPI_TRIPS_ACTIVE) && |
499 | tz->trips.active[i].flags.valid)) { | |
ce44e197 | 500 | status = acpi_evaluate_integer(tz->device->handle, |
27663c58 | 501 | name, NULL, &tmp); |
ce44e197 ZR |
502 | if (ACPI_FAILURE(status)) { |
503 | tz->trips.active[i].flags.valid = 0; | |
504 | if (i == 0) | |
505 | break; | |
506 | if (act <= 0) | |
507 | break; | |
508 | if (i == 1) | |
509 | tz->trips.active[0].temperature = | |
510 | CELSIUS_TO_KELVIN(act); | |
511 | else | |
512 | /* | |
513 | * Don't allow override higher than | |
514 | * the next higher trip point | |
515 | */ | |
516 | tz->trips.active[i - 1].temperature = | |
517 | (tz->trips.active[i - 2].temperature < | |
518 | CELSIUS_TO_KELVIN(act) ? | |
519 | tz->trips.active[i - 2].temperature : | |
520 | CELSIUS_TO_KELVIN(act)); | |
f8707ec9 | 521 | break; |
27663c58 MW |
522 | } else { |
523 | tz->trips.active[i].temperature = tmp; | |
ce44e197 | 524 | tz->trips.active[i].flags.valid = 1; |
27663c58 | 525 | } |
f8707ec9 | 526 | } |
1da177e4 LT |
527 | |
528 | name[2] = 'L'; | |
ce44e197 ZR |
529 | if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.active[i].flags.valid ) { |
530 | memset(&devices, 0, sizeof(struct acpi_handle_list)); | |
531 | status = acpi_evaluate_reference(tz->device->handle, | |
532 | name, NULL, &devices); | |
0e4240d9 ZR |
533 | if (ACPI_FAILURE(status)) { |
534 | printk(KERN_WARNING PREFIX | |
535 | "Invalid active%d threshold\n", i); | |
ce44e197 | 536 | tz->trips.active[i].flags.valid = 0; |
0e4240d9 | 537 | } |
ce44e197 ZR |
538 | else |
539 | tz->trips.active[i].flags.valid = 1; | |
540 | ||
541 | if (memcmp(&tz->trips.active[i].devices, &devices, | |
542 | sizeof(struct acpi_handle_list))) { | |
543 | memcpy(&tz->trips.active[i].devices, &devices, | |
544 | sizeof(struct acpi_handle_list)); | |
545 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); | |
546 | } | |
547 | } | |
548 | if ((flag & ACPI_TRIPS_ACTIVE) || (flag & ACPI_TRIPS_DEVICES)) | |
549 | if (valid != tz->trips.active[i].flags.valid) | |
550 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "state"); | |
551 | ||
552 | if (!tz->trips.active[i].flags.valid) | |
553 | break; | |
554 | } | |
555 | ||
556 | if (flag & ACPI_TRIPS_DEVICES) { | |
557 | memset(&devices, 0, sizeof(struct acpi_handle_list)); | |
558 | status = acpi_evaluate_reference(tz->device->handle, "_TZD", | |
559 | NULL, &devices); | |
560 | if (memcmp(&tz->devices, &devices, | |
561 | sizeof(struct acpi_handle_list))) { | |
562 | memcpy(&tz->devices, &devices, | |
563 | sizeof(struct acpi_handle_list)); | |
564 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); | |
565 | } | |
1da177e4 LT |
566 | } |
567 | ||
d550d98d | 568 | return 0; |
1da177e4 LT |
569 | } |
570 | ||
ce44e197 | 571 | static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) |
1da177e4 | 572 | { |
ce44e197 | 573 | return acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT); |
1da177e4 LT |
574 | } |
575 | ||
4be44fcd | 576 | static void acpi_thermal_check(void *data) |
1da177e4 | 577 | { |
50dd0969 | 578 | struct acpi_thermal *tz = data; |
1da177e4 | 579 | |
b1569e99 | 580 | thermal_zone_device_update(tz->thermal_zone); |
1da177e4 LT |
581 | } |
582 | ||
3f655ef8 | 583 | /* sys I/F for generic thermal sysfs support */ |
5e012760 ZR |
584 | #define KELVIN_TO_MILLICELSIUS(t) (t * 100 - 273200) |
585 | ||
6503e5df MG |
586 | static int thermal_get_temp(struct thermal_zone_device *thermal, |
587 | unsigned long *temp) | |
3f655ef8 ZR |
588 | { |
589 | struct acpi_thermal *tz = thermal->devdata; | |
76ecb4f2 | 590 | int result; |
3f655ef8 ZR |
591 | |
592 | if (!tz) | |
593 | return -EINVAL; | |
594 | ||
76ecb4f2 ZR |
595 | result = acpi_thermal_get_temperature(tz); |
596 | if (result) | |
597 | return result; | |
598 | ||
6503e5df MG |
599 | *temp = KELVIN_TO_MILLICELSIUS(tz->temperature); |
600 | return 0; | |
3f655ef8 ZR |
601 | } |
602 | ||
603 | static const char enabled[] = "kernel"; | |
604 | static const char disabled[] = "user"; | |
605 | static int thermal_get_mode(struct thermal_zone_device *thermal, | |
6503e5df | 606 | enum thermal_device_mode *mode) |
3f655ef8 ZR |
607 | { |
608 | struct acpi_thermal *tz = thermal->devdata; | |
609 | ||
610 | if (!tz) | |
611 | return -EINVAL; | |
612 | ||
6503e5df MG |
613 | *mode = tz->tz_enabled ? THERMAL_DEVICE_ENABLED : |
614 | THERMAL_DEVICE_DISABLED; | |
615 | ||
616 | return 0; | |
3f655ef8 ZR |
617 | } |
618 | ||
619 | static int thermal_set_mode(struct thermal_zone_device *thermal, | |
6503e5df | 620 | enum thermal_device_mode mode) |
3f655ef8 ZR |
621 | { |
622 | struct acpi_thermal *tz = thermal->devdata; | |
623 | int enable; | |
624 | ||
625 | if (!tz) | |
626 | return -EINVAL; | |
627 | ||
628 | /* | |
629 | * enable/disable thermal management from ACPI thermal driver | |
630 | */ | |
6503e5df | 631 | if (mode == THERMAL_DEVICE_ENABLED) |
3f655ef8 | 632 | enable = 1; |
6503e5df | 633 | else if (mode == THERMAL_DEVICE_DISABLED) |
3f655ef8 ZR |
634 | enable = 0; |
635 | else | |
636 | return -EINVAL; | |
637 | ||
638 | if (enable != tz->tz_enabled) { | |
639 | tz->tz_enabled = enable; | |
640 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
641 | "%s ACPI thermal control\n", | |
642 | tz->tz_enabled ? enabled : disabled)); | |
643 | acpi_thermal_check(tz); | |
644 | } | |
645 | return 0; | |
646 | } | |
647 | ||
648 | static int thermal_get_trip_type(struct thermal_zone_device *thermal, | |
6503e5df | 649 | int trip, enum thermal_trip_type *type) |
3f655ef8 ZR |
650 | { |
651 | struct acpi_thermal *tz = thermal->devdata; | |
652 | int i; | |
653 | ||
654 | if (!tz || trip < 0) | |
655 | return -EINVAL; | |
656 | ||
657 | if (tz->trips.critical.flags.valid) { | |
6503e5df MG |
658 | if (!trip) { |
659 | *type = THERMAL_TRIP_CRITICAL; | |
660 | return 0; | |
661 | } | |
3f655ef8 ZR |
662 | trip--; |
663 | } | |
664 | ||
665 | if (tz->trips.hot.flags.valid) { | |
6503e5df MG |
666 | if (!trip) { |
667 | *type = THERMAL_TRIP_HOT; | |
668 | return 0; | |
669 | } | |
3f655ef8 ZR |
670 | trip--; |
671 | } | |
672 | ||
673 | if (tz->trips.passive.flags.valid) { | |
6503e5df MG |
674 | if (!trip) { |
675 | *type = THERMAL_TRIP_PASSIVE; | |
676 | return 0; | |
677 | } | |
3f655ef8 ZR |
678 | trip--; |
679 | } | |
680 | ||
681 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && | |
682 | tz->trips.active[i].flags.valid; i++) { | |
6503e5df MG |
683 | if (!trip) { |
684 | *type = THERMAL_TRIP_ACTIVE; | |
685 | return 0; | |
686 | } | |
3f655ef8 ZR |
687 | trip--; |
688 | } | |
689 | ||
690 | return -EINVAL; | |
691 | } | |
692 | ||
693 | static int thermal_get_trip_temp(struct thermal_zone_device *thermal, | |
6503e5df | 694 | int trip, unsigned long *temp) |
3f655ef8 ZR |
695 | { |
696 | struct acpi_thermal *tz = thermal->devdata; | |
697 | int i; | |
698 | ||
699 | if (!tz || trip < 0) | |
700 | return -EINVAL; | |
701 | ||
702 | if (tz->trips.critical.flags.valid) { | |
6503e5df MG |
703 | if (!trip) { |
704 | *temp = KELVIN_TO_MILLICELSIUS( | |
705 | tz->trips.critical.temperature); | |
706 | return 0; | |
707 | } | |
3f655ef8 ZR |
708 | trip--; |
709 | } | |
710 | ||
711 | if (tz->trips.hot.flags.valid) { | |
6503e5df MG |
712 | if (!trip) { |
713 | *temp = KELVIN_TO_MILLICELSIUS( | |
714 | tz->trips.hot.temperature); | |
715 | return 0; | |
716 | } | |
3f655ef8 ZR |
717 | trip--; |
718 | } | |
719 | ||
720 | if (tz->trips.passive.flags.valid) { | |
6503e5df MG |
721 | if (!trip) { |
722 | *temp = KELVIN_TO_MILLICELSIUS( | |
723 | tz->trips.passive.temperature); | |
724 | return 0; | |
725 | } | |
3f655ef8 ZR |
726 | trip--; |
727 | } | |
728 | ||
729 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && | |
730 | tz->trips.active[i].flags.valid; i++) { | |
6503e5df MG |
731 | if (!trip) { |
732 | *temp = KELVIN_TO_MILLICELSIUS( | |
733 | tz->trips.active[i].temperature); | |
734 | return 0; | |
735 | } | |
3f655ef8 ZR |
736 | trip--; |
737 | } | |
738 | ||
739 | return -EINVAL; | |
740 | } | |
741 | ||
9ec732ff ZR |
742 | static int thermal_get_crit_temp(struct thermal_zone_device *thermal, |
743 | unsigned long *temperature) { | |
744 | struct acpi_thermal *tz = thermal->devdata; | |
745 | ||
746 | if (tz->trips.critical.flags.valid) { | |
747 | *temperature = KELVIN_TO_MILLICELSIUS( | |
748 | tz->trips.critical.temperature); | |
749 | return 0; | |
750 | } else | |
751 | return -EINVAL; | |
752 | } | |
753 | ||
b1569e99 MG |
754 | static int thermal_notify(struct thermal_zone_device *thermal, int trip, |
755 | enum thermal_trip_type trip_type) | |
756 | { | |
757 | u8 type = 0; | |
758 | struct acpi_thermal *tz = thermal->devdata; | |
759 | ||
760 | if (trip_type == THERMAL_TRIP_CRITICAL) | |
761 | type = ACPI_THERMAL_NOTIFY_CRITICAL; | |
762 | else if (trip_type == THERMAL_TRIP_HOT) | |
763 | type = ACPI_THERMAL_NOTIFY_HOT; | |
764 | else | |
765 | return 0; | |
766 | ||
767 | acpi_bus_generate_proc_event(tz->device, type, 1); | |
768 | acpi_bus_generate_netlink_event(tz->device->pnp.device_class, | |
f6f5c45e | 769 | dev_name(&tz->device->dev), type, 1); |
b1569e99 MG |
770 | |
771 | if (trip_type == THERMAL_TRIP_CRITICAL && nocrt) | |
772 | return 1; | |
773 | ||
774 | return 0; | |
775 | } | |
776 | ||
3f655ef8 ZR |
777 | typedef int (*cb)(struct thermal_zone_device *, int, |
778 | struct thermal_cooling_device *); | |
779 | static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, | |
780 | struct thermal_cooling_device *cdev, | |
781 | cb action) | |
782 | { | |
783 | struct acpi_device *device = cdev->devdata; | |
784 | struct acpi_thermal *tz = thermal->devdata; | |
653a00c9 ZR |
785 | struct acpi_device *dev; |
786 | acpi_status status; | |
787 | acpi_handle handle; | |
3f655ef8 ZR |
788 | int i; |
789 | int j; | |
790 | int trip = -1; | |
791 | int result = 0; | |
792 | ||
793 | if (tz->trips.critical.flags.valid) | |
794 | trip++; | |
795 | ||
796 | if (tz->trips.hot.flags.valid) | |
797 | trip++; | |
798 | ||
799 | if (tz->trips.passive.flags.valid) { | |
800 | trip++; | |
801 | for (i = 0; i < tz->trips.passive.devices.count; | |
802 | i++) { | |
653a00c9 ZR |
803 | handle = tz->trips.passive.devices.handles[i]; |
804 | status = acpi_bus_get_device(handle, &dev); | |
805 | if (ACPI_SUCCESS(status) && (dev == device)) { | |
806 | result = action(thermal, trip, cdev); | |
807 | if (result) | |
808 | goto failed; | |
809 | } | |
3f655ef8 ZR |
810 | } |
811 | } | |
812 | ||
813 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { | |
814 | if (!tz->trips.active[i].flags.valid) | |
815 | break; | |
816 | trip++; | |
817 | for (j = 0; | |
818 | j < tz->trips.active[i].devices.count; | |
819 | j++) { | |
653a00c9 ZR |
820 | handle = tz->trips.active[i].devices.handles[j]; |
821 | status = acpi_bus_get_device(handle, &dev); | |
822 | if (ACPI_SUCCESS(status) && (dev == device)) { | |
823 | result = action(thermal, trip, cdev); | |
824 | if (result) | |
825 | goto failed; | |
826 | } | |
3f655ef8 ZR |
827 | } |
828 | } | |
829 | ||
830 | for (i = 0; i < tz->devices.count; i++) { | |
653a00c9 ZR |
831 | handle = tz->devices.handles[i]; |
832 | status = acpi_bus_get_device(handle, &dev); | |
833 | if (ACPI_SUCCESS(status) && (dev == device)) { | |
834 | result = action(thermal, -1, cdev); | |
835 | if (result) | |
836 | goto failed; | |
837 | } | |
3f655ef8 ZR |
838 | } |
839 | ||
840 | failed: | |
841 | return result; | |
842 | } | |
843 | ||
844 | static int | |
845 | acpi_thermal_bind_cooling_device(struct thermal_zone_device *thermal, | |
846 | struct thermal_cooling_device *cdev) | |
847 | { | |
848 | return acpi_thermal_cooling_device_cb(thermal, cdev, | |
849 | thermal_zone_bind_cooling_device); | |
850 | } | |
851 | ||
852 | static int | |
853 | acpi_thermal_unbind_cooling_device(struct thermal_zone_device *thermal, | |
854 | struct thermal_cooling_device *cdev) | |
855 | { | |
856 | return acpi_thermal_cooling_device_cb(thermal, cdev, | |
857 | thermal_zone_unbind_cooling_device); | |
858 | } | |
859 | ||
860 | static struct thermal_zone_device_ops acpi_thermal_zone_ops = { | |
861 | .bind = acpi_thermal_bind_cooling_device, | |
862 | .unbind = acpi_thermal_unbind_cooling_device, | |
863 | .get_temp = thermal_get_temp, | |
864 | .get_mode = thermal_get_mode, | |
865 | .set_mode = thermal_set_mode, | |
866 | .get_trip_type = thermal_get_trip_type, | |
867 | .get_trip_temp = thermal_get_trip_temp, | |
9ec732ff | 868 | .get_crit_temp = thermal_get_crit_temp, |
b1569e99 | 869 | .notify = thermal_notify, |
3f655ef8 ZR |
870 | }; |
871 | ||
872 | static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) | |
873 | { | |
874 | int trips = 0; | |
875 | int result; | |
20733939 | 876 | acpi_status status; |
3f655ef8 ZR |
877 | int i; |
878 | ||
879 | if (tz->trips.critical.flags.valid) | |
880 | trips++; | |
881 | ||
882 | if (tz->trips.hot.flags.valid) | |
883 | trips++; | |
884 | ||
885 | if (tz->trips.passive.flags.valid) | |
886 | trips++; | |
887 | ||
888 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && | |
889 | tz->trips.active[i].flags.valid; i++, trips++); | |
b1569e99 MG |
890 | |
891 | if (tz->trips.passive.flags.valid) | |
892 | tz->thermal_zone = | |
893 | thermal_zone_device_register("acpitz", trips, tz, | |
894 | &acpi_thermal_zone_ops, | |
895 | tz->trips.passive.tc1, | |
896 | tz->trips.passive.tc2, | |
897 | tz->trips.passive.tsp*100, | |
898 | tz->polling_frequency*100); | |
899 | else | |
900 | tz->thermal_zone = | |
901 | thermal_zone_device_register("acpitz", trips, tz, | |
902 | &acpi_thermal_zone_ops, | |
903 | 0, 0, 0, | |
904 | tz->polling_frequency); | |
bb070e43 | 905 | if (IS_ERR(tz->thermal_zone)) |
3f655ef8 ZR |
906 | return -ENODEV; |
907 | ||
908 | result = sysfs_create_link(&tz->device->dev.kobj, | |
909 | &tz->thermal_zone->device.kobj, "thermal_zone"); | |
910 | if (result) | |
911 | return result; | |
912 | ||
913 | result = sysfs_create_link(&tz->thermal_zone->device.kobj, | |
914 | &tz->device->dev.kobj, "device"); | |
915 | if (result) | |
916 | return result; | |
917 | ||
20733939 ZR |
918 | status = acpi_attach_data(tz->device->handle, |
919 | acpi_bus_private_data_handler, | |
920 | tz->thermal_zone); | |
921 | if (ACPI_FAILURE(status)) { | |
55ac9a01 LM |
922 | printk(KERN_ERR PREFIX |
923 | "Error attaching device data\n"); | |
20733939 ZR |
924 | return -ENODEV; |
925 | } | |
926 | ||
3f655ef8 ZR |
927 | tz->tz_enabled = 1; |
928 | ||
fc3a8828 GKH |
929 | dev_info(&tz->device->dev, "registered as thermal_zone%d\n", |
930 | tz->thermal_zone->id); | |
3f655ef8 ZR |
931 | return 0; |
932 | } | |
933 | ||
934 | static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz) | |
935 | { | |
936 | sysfs_remove_link(&tz->device->dev.kobj, "thermal_zone"); | |
937 | sysfs_remove_link(&tz->thermal_zone->device.kobj, "device"); | |
938 | thermal_zone_device_unregister(tz->thermal_zone); | |
939 | tz->thermal_zone = NULL; | |
20733939 | 940 | acpi_detach_data(tz->device->handle, acpi_bus_private_data_handler); |
3f655ef8 ZR |
941 | } |
942 | ||
943 | ||
1da177e4 LT |
944 | /* -------------------------------------------------------------------------- |
945 | FS Interface (/proc) | |
946 | -------------------------------------------------------------------------- */ | |
947 | ||
4be44fcd | 948 | static struct proc_dir_entry *acpi_thermal_dir; |
1da177e4 LT |
949 | |
950 | static int acpi_thermal_state_seq_show(struct seq_file *seq, void *offset) | |
951 | { | |
50dd0969 | 952 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 953 | |
1da177e4 LT |
954 | |
955 | if (!tz) | |
956 | goto end; | |
957 | ||
958 | seq_puts(seq, "state: "); | |
959 | ||
4be44fcd LB |
960 | if (!tz->state.critical && !tz->state.hot && !tz->state.passive |
961 | && !tz->state.active) | |
1da177e4 LT |
962 | seq_puts(seq, "ok\n"); |
963 | else { | |
964 | if (tz->state.critical) | |
965 | seq_puts(seq, "critical "); | |
966 | if (tz->state.hot) | |
967 | seq_puts(seq, "hot "); | |
968 | if (tz->state.passive) | |
969 | seq_puts(seq, "passive "); | |
970 | if (tz->state.active) | |
971 | seq_printf(seq, "active[%d]", tz->state.active_index); | |
972 | seq_puts(seq, "\n"); | |
973 | } | |
974 | ||
4be44fcd | 975 | end: |
d550d98d | 976 | return 0; |
1da177e4 LT |
977 | } |
978 | ||
979 | static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file) | |
980 | { | |
981 | return single_open(file, acpi_thermal_state_seq_show, PDE(inode)->data); | |
982 | } | |
983 | ||
1da177e4 LT |
984 | static int acpi_thermal_temp_seq_show(struct seq_file *seq, void *offset) |
985 | { | |
4be44fcd | 986 | int result = 0; |
50dd0969 | 987 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 988 | |
1da177e4 LT |
989 | |
990 | if (!tz) | |
991 | goto end; | |
992 | ||
993 | result = acpi_thermal_get_temperature(tz); | |
994 | if (result) | |
995 | goto end; | |
996 | ||
4be44fcd LB |
997 | seq_printf(seq, "temperature: %ld C\n", |
998 | KELVIN_TO_CELSIUS(tz->temperature)); | |
1da177e4 | 999 | |
4be44fcd | 1000 | end: |
d550d98d | 1001 | return 0; |
1da177e4 LT |
1002 | } |
1003 | ||
1004 | static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file) | |
1005 | { | |
1006 | return single_open(file, acpi_thermal_temp_seq_show, PDE(inode)->data); | |
1007 | } | |
1008 | ||
1da177e4 LT |
1009 | static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset) |
1010 | { | |
50dd0969 | 1011 | struct acpi_thermal *tz = seq->private; |
68ccfaa8 | 1012 | struct acpi_device *device; |
e7c746ef TR |
1013 | acpi_status status; |
1014 | ||
4be44fcd LB |
1015 | int i = 0; |
1016 | int j = 0; | |
1da177e4 | 1017 | |
1da177e4 LT |
1018 | |
1019 | if (!tz) | |
1020 | goto end; | |
1021 | ||
1022 | if (tz->trips.critical.flags.valid) | |
f5487145 LB |
1023 | seq_printf(seq, "critical (S5): %ld C%s", |
1024 | KELVIN_TO_CELSIUS(tz->trips.critical.temperature), | |
1025 | nocrt ? " <disabled>\n" : "\n"); | |
1da177e4 LT |
1026 | |
1027 | if (tz->trips.hot.flags.valid) | |
f5487145 LB |
1028 | seq_printf(seq, "hot (S4): %ld C%s", |
1029 | KELVIN_TO_CELSIUS(tz->trips.hot.temperature), | |
1030 | nocrt ? " <disabled>\n" : "\n"); | |
1da177e4 LT |
1031 | |
1032 | if (tz->trips.passive.flags.valid) { | |
4be44fcd LB |
1033 | seq_printf(seq, |
1034 | "passive: %ld C: tc1=%lu tc2=%lu tsp=%lu devices=", | |
1035 | KELVIN_TO_CELSIUS(tz->trips.passive.temperature), | |
1036 | tz->trips.passive.tc1, tz->trips.passive.tc2, | |
1037 | tz->trips.passive.tsp); | |
1038 | for (j = 0; j < tz->trips.passive.devices.count; j++) { | |
e7c746ef TR |
1039 | status = acpi_bus_get_device(tz->trips.passive.devices. |
1040 | handles[j], &device); | |
1041 | seq_printf(seq, "%4.4s ", status ? "" : | |
1042 | acpi_device_bid(device)); | |
1da177e4 LT |
1043 | } |
1044 | seq_puts(seq, "\n"); | |
1045 | } | |
1046 | ||
1047 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { | |
1048 | if (!(tz->trips.active[i].flags.valid)) | |
1049 | break; | |
1050 | seq_printf(seq, "active[%d]: %ld C: devices=", | |
4be44fcd LB |
1051 | i, |
1052 | KELVIN_TO_CELSIUS(tz->trips.active[i].temperature)); | |
68ccfaa8 | 1053 | for (j = 0; j < tz->trips.active[i].devices.count; j++){ |
e7c746ef TR |
1054 | status = acpi_bus_get_device(tz->trips.active[i]. |
1055 | devices.handles[j], | |
1056 | &device); | |
1057 | seq_printf(seq, "%4.4s ", status ? "" : | |
1058 | acpi_device_bid(device)); | |
68ccfaa8 | 1059 | } |
1da177e4 LT |
1060 | seq_puts(seq, "\n"); |
1061 | } | |
1062 | ||
4be44fcd | 1063 | end: |
d550d98d | 1064 | return 0; |
1da177e4 LT |
1065 | } |
1066 | ||
1067 | static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file) | |
1068 | { | |
1069 | return single_open(file, acpi_thermal_trip_seq_show, PDE(inode)->data); | |
1070 | } | |
1071 | ||
1da177e4 LT |
1072 | static int acpi_thermal_cooling_seq_show(struct seq_file *seq, void *offset) |
1073 | { | |
50dd0969 | 1074 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 1075 | |
1da177e4 LT |
1076 | |
1077 | if (!tz) | |
1078 | goto end; | |
1079 | ||
eaca2d3f | 1080 | if (!tz->flags.cooling_mode) |
1da177e4 | 1081 | seq_puts(seq, "<setting not supported>\n"); |
1da177e4 | 1082 | else |
eaca2d3f | 1083 | seq_puts(seq, "0 - Active; 1 - Passive\n"); |
1da177e4 | 1084 | |
4be44fcd | 1085 | end: |
d550d98d | 1086 | return 0; |
1da177e4 LT |
1087 | } |
1088 | ||
1089 | static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file) | |
1090 | { | |
1091 | return single_open(file, acpi_thermal_cooling_seq_show, | |
4be44fcd | 1092 | PDE(inode)->data); |
1da177e4 LT |
1093 | } |
1094 | ||
1095 | static ssize_t | |
4be44fcd LB |
1096 | acpi_thermal_write_cooling_mode(struct file *file, |
1097 | const char __user * buffer, | |
1098 | size_t count, loff_t * ppos) | |
1da177e4 | 1099 | { |
50dd0969 JE |
1100 | struct seq_file *m = file->private_data; |
1101 | struct acpi_thermal *tz = m->private; | |
4be44fcd LB |
1102 | int result = 0; |
1103 | char mode_string[12] = { '\0' }; | |
1da177e4 | 1104 | |
1da177e4 LT |
1105 | |
1106 | if (!tz || (count > sizeof(mode_string) - 1)) | |
d550d98d | 1107 | return -EINVAL; |
1da177e4 LT |
1108 | |
1109 | if (!tz->flags.cooling_mode) | |
d550d98d | 1110 | return -ENODEV; |
1da177e4 LT |
1111 | |
1112 | if (copy_from_user(mode_string, buffer, count)) | |
d550d98d | 1113 | return -EFAULT; |
4be44fcd | 1114 | |
1da177e4 | 1115 | mode_string[count] = '\0'; |
4be44fcd LB |
1116 | |
1117 | result = acpi_thermal_set_cooling_mode(tz, | |
1118 | simple_strtoul(mode_string, NULL, | |
1119 | 0)); | |
1da177e4 | 1120 | if (result) |
d550d98d | 1121 | return result; |
1da177e4 LT |
1122 | |
1123 | acpi_thermal_check(tz); | |
1124 | ||
d550d98d | 1125 | return count; |
1da177e4 LT |
1126 | } |
1127 | ||
1da177e4 LT |
1128 | static int acpi_thermal_polling_seq_show(struct seq_file *seq, void *offset) |
1129 | { | |
50dd0969 | 1130 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 1131 | |
1da177e4 LT |
1132 | |
1133 | if (!tz) | |
1134 | goto end; | |
1135 | ||
b1569e99 | 1136 | if (!tz->thermal_zone->polling_delay) { |
1da177e4 LT |
1137 | seq_puts(seq, "<polling disabled>\n"); |
1138 | goto end; | |
1139 | } | |
1140 | ||
b1569e99 MG |
1141 | seq_printf(seq, "polling frequency: %d seconds\n", |
1142 | (tz->thermal_zone->polling_delay / 1000)); | |
1da177e4 | 1143 | |
4be44fcd | 1144 | end: |
d550d98d | 1145 | return 0; |
1da177e4 LT |
1146 | } |
1147 | ||
1148 | static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file) | |
1149 | { | |
1150 | return single_open(file, acpi_thermal_polling_seq_show, | |
4be44fcd | 1151 | PDE(inode)->data); |
1da177e4 LT |
1152 | } |
1153 | ||
1154 | static ssize_t | |
4be44fcd LB |
1155 | acpi_thermal_write_polling(struct file *file, |
1156 | const char __user * buffer, | |
1157 | size_t count, loff_t * ppos) | |
1da177e4 | 1158 | { |
50dd0969 JE |
1159 | struct seq_file *m = file->private_data; |
1160 | struct acpi_thermal *tz = m->private; | |
4be44fcd LB |
1161 | int result = 0; |
1162 | char polling_string[12] = { '\0' }; | |
1163 | int seconds = 0; | |
1da177e4 | 1164 | |
1da177e4 LT |
1165 | |
1166 | if (!tz || (count > sizeof(polling_string) - 1)) | |
d550d98d | 1167 | return -EINVAL; |
4be44fcd | 1168 | |
1da177e4 | 1169 | if (copy_from_user(polling_string, buffer, count)) |
d550d98d | 1170 | return -EFAULT; |
4be44fcd | 1171 | |
1da177e4 LT |
1172 | polling_string[count] = '\0'; |
1173 | ||
1174 | seconds = simple_strtoul(polling_string, NULL, 0); | |
4be44fcd | 1175 | |
1da177e4 LT |
1176 | result = acpi_thermal_set_polling(tz, seconds); |
1177 | if (result) | |
d550d98d | 1178 | return result; |
1da177e4 LT |
1179 | |
1180 | acpi_thermal_check(tz); | |
1181 | ||
d550d98d | 1182 | return count; |
1da177e4 LT |
1183 | } |
1184 | ||
4be44fcd | 1185 | static int acpi_thermal_add_fs(struct acpi_device *device) |
1da177e4 | 1186 | { |
4be44fcd | 1187 | struct proc_dir_entry *entry = NULL; |
1da177e4 | 1188 | |
1da177e4 LT |
1189 | |
1190 | if (!acpi_device_dir(device)) { | |
1191 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1192 | acpi_thermal_dir); |
1da177e4 | 1193 | if (!acpi_device_dir(device)) |
d550d98d | 1194 | return -ENODEV; |
1da177e4 LT |
1195 | } |
1196 | ||
1197 | /* 'state' [R] */ | |
cf7acfab DL |
1198 | entry = proc_create_data(ACPI_THERMAL_FILE_STATE, |
1199 | S_IRUGO, acpi_device_dir(device), | |
1200 | &acpi_thermal_state_fops, | |
1201 | acpi_driver_data(device)); | |
1da177e4 | 1202 | if (!entry) |
d550d98d | 1203 | return -ENODEV; |
1da177e4 LT |
1204 | |
1205 | /* 'temperature' [R] */ | |
cf7acfab DL |
1206 | entry = proc_create_data(ACPI_THERMAL_FILE_TEMPERATURE, |
1207 | S_IRUGO, acpi_device_dir(device), | |
1208 | &acpi_thermal_temp_fops, | |
1209 | acpi_driver_data(device)); | |
1da177e4 | 1210 | if (!entry) |
d550d98d | 1211 | return -ENODEV; |
1da177e4 | 1212 | |
2db9ccba | 1213 | /* 'trip_points' [R] */ |
cf7acfab DL |
1214 | entry = proc_create_data(ACPI_THERMAL_FILE_TRIP_POINTS, |
1215 | S_IRUGO, | |
1216 | acpi_device_dir(device), | |
1217 | &acpi_thermal_trip_fops, | |
1218 | acpi_driver_data(device)); | |
1da177e4 | 1219 | if (!entry) |
d550d98d | 1220 | return -ENODEV; |
1da177e4 LT |
1221 | |
1222 | /* 'cooling_mode' [R/W] */ | |
cf7acfab DL |
1223 | entry = proc_create_data(ACPI_THERMAL_FILE_COOLING_MODE, |
1224 | S_IFREG | S_IRUGO | S_IWUSR, | |
1225 | acpi_device_dir(device), | |
1226 | &acpi_thermal_cooling_fops, | |
1227 | acpi_driver_data(device)); | |
1da177e4 | 1228 | if (!entry) |
d550d98d | 1229 | return -ENODEV; |
1da177e4 LT |
1230 | |
1231 | /* 'polling_frequency' [R/W] */ | |
cf7acfab DL |
1232 | entry = proc_create_data(ACPI_THERMAL_FILE_POLLING_FREQ, |
1233 | S_IFREG | S_IRUGO | S_IWUSR, | |
1234 | acpi_device_dir(device), | |
1235 | &acpi_thermal_polling_fops, | |
1236 | acpi_driver_data(device)); | |
1da177e4 | 1237 | if (!entry) |
d550d98d | 1238 | return -ENODEV; |
d550d98d | 1239 | return 0; |
1da177e4 LT |
1240 | } |
1241 | ||
4be44fcd | 1242 | static int acpi_thermal_remove_fs(struct acpi_device *device) |
1da177e4 | 1243 | { |
1da177e4 LT |
1244 | |
1245 | if (acpi_device_dir(device)) { | |
1246 | remove_proc_entry(ACPI_THERMAL_FILE_POLLING_FREQ, | |
1247 | acpi_device_dir(device)); | |
1248 | remove_proc_entry(ACPI_THERMAL_FILE_COOLING_MODE, | |
1249 | acpi_device_dir(device)); | |
1250 | remove_proc_entry(ACPI_THERMAL_FILE_TRIP_POINTS, | |
1251 | acpi_device_dir(device)); | |
1252 | remove_proc_entry(ACPI_THERMAL_FILE_TEMPERATURE, | |
1253 | acpi_device_dir(device)); | |
1254 | remove_proc_entry(ACPI_THERMAL_FILE_STATE, | |
1255 | acpi_device_dir(device)); | |
1256 | remove_proc_entry(acpi_device_bid(device), acpi_thermal_dir); | |
1257 | acpi_device_dir(device) = NULL; | |
1258 | } | |
1259 | ||
d550d98d | 1260 | return 0; |
1da177e4 LT |
1261 | } |
1262 | ||
1da177e4 LT |
1263 | /* -------------------------------------------------------------------------- |
1264 | Driver Interface | |
1265 | -------------------------------------------------------------------------- */ | |
1266 | ||
4be44fcd | 1267 | static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data) |
1da177e4 | 1268 | { |
50dd0969 | 1269 | struct acpi_thermal *tz = data; |
4be44fcd | 1270 | struct acpi_device *device = NULL; |
1da177e4 | 1271 | |
1da177e4 LT |
1272 | |
1273 | if (!tz) | |
d550d98d | 1274 | return; |
1da177e4 | 1275 | |
8348e1b1 | 1276 | device = tz->device; |
1da177e4 LT |
1277 | |
1278 | switch (event) { | |
1279 | case ACPI_THERMAL_NOTIFY_TEMPERATURE: | |
1280 | acpi_thermal_check(tz); | |
1281 | break; | |
1282 | case ACPI_THERMAL_NOTIFY_THRESHOLDS: | |
ce44e197 | 1283 | acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_THRESHOLDS); |
1da177e4 | 1284 | acpi_thermal_check(tz); |
14e04fb3 | 1285 | acpi_bus_generate_proc_event(device, event, 0); |
962ce8ca | 1286 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
0794469d | 1287 | dev_name(&device->dev), event, 0); |
1da177e4 LT |
1288 | break; |
1289 | case ACPI_THERMAL_NOTIFY_DEVICES: | |
ce44e197 ZR |
1290 | acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_DEVICES); |
1291 | acpi_thermal_check(tz); | |
14e04fb3 | 1292 | acpi_bus_generate_proc_event(device, event, 0); |
962ce8ca | 1293 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
0794469d | 1294 | dev_name(&device->dev), event, 0); |
1da177e4 LT |
1295 | break; |
1296 | default: | |
1297 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1298 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1299 | break; |
1300 | } | |
1301 | ||
d550d98d | 1302 | return; |
1da177e4 LT |
1303 | } |
1304 | ||
4be44fcd | 1305 | static int acpi_thermal_get_info(struct acpi_thermal *tz) |
1da177e4 | 1306 | { |
4be44fcd | 1307 | int result = 0; |
1da177e4 | 1308 | |
1da177e4 LT |
1309 | |
1310 | if (!tz) | |
d550d98d | 1311 | return -EINVAL; |
1da177e4 LT |
1312 | |
1313 | /* Get temperature [_TMP] (required) */ | |
1314 | result = acpi_thermal_get_temperature(tz); | |
1315 | if (result) | |
d550d98d | 1316 | return result; |
1da177e4 LT |
1317 | |
1318 | /* Get trip points [_CRT, _PSV, etc.] (required) */ | |
1319 | result = acpi_thermal_get_trip_points(tz); | |
1320 | if (result) | |
d550d98d | 1321 | return result; |
1da177e4 LT |
1322 | |
1323 | /* Set the cooling mode [_SCP] to active cooling (default) */ | |
1324 | result = acpi_thermal_set_cooling_mode(tz, ACPI_THERMAL_MODE_ACTIVE); | |
4be44fcd | 1325 | if (!result) |
1da177e4 | 1326 | tz->flags.cooling_mode = 1; |
1da177e4 LT |
1327 | |
1328 | /* Get default polling frequency [_TZP] (optional) */ | |
1329 | if (tzp) | |
1330 | tz->polling_frequency = tzp; | |
1331 | else | |
1332 | acpi_thermal_get_polling_frequency(tz); | |
1333 | ||
d550d98d | 1334 | return 0; |
1da177e4 LT |
1335 | } |
1336 | ||
4be44fcd | 1337 | static int acpi_thermal_add(struct acpi_device *device) |
1da177e4 | 1338 | { |
4be44fcd LB |
1339 | int result = 0; |
1340 | acpi_status status = AE_OK; | |
1341 | struct acpi_thermal *tz = NULL; | |
1da177e4 | 1342 | |
1da177e4 LT |
1343 | |
1344 | if (!device) | |
d550d98d | 1345 | return -EINVAL; |
1da177e4 | 1346 | |
36bcbec7 | 1347 | tz = kzalloc(sizeof(struct acpi_thermal), GFP_KERNEL); |
1da177e4 | 1348 | if (!tz) |
d550d98d | 1349 | return -ENOMEM; |
1da177e4 | 1350 | |
8348e1b1 | 1351 | tz->device = device; |
1da177e4 LT |
1352 | strcpy(tz->name, device->pnp.bus_id); |
1353 | strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME); | |
1354 | strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS); | |
db89b4f0 | 1355 | device->driver_data = tz; |
6e215785 | 1356 | mutex_init(&tz->lock); |
3f655ef8 ZR |
1357 | |
1358 | ||
1da177e4 LT |
1359 | result = acpi_thermal_get_info(tz); |
1360 | if (result) | |
3f655ef8 ZR |
1361 | goto free_memory; |
1362 | ||
1363 | result = acpi_thermal_register_thermal_zone(tz); | |
1364 | if (result) | |
1365 | goto free_memory; | |
1da177e4 LT |
1366 | |
1367 | result = acpi_thermal_add_fs(device); | |
1368 | if (result) | |
3f655ef8 | 1369 | goto unregister_thermal_zone; |
1da177e4 | 1370 | |
38ba7c9e | 1371 | status = acpi_install_notify_handler(device->handle, |
4be44fcd LB |
1372 | ACPI_DEVICE_NOTIFY, |
1373 | acpi_thermal_notify, tz); | |
1da177e4 | 1374 | if (ACPI_FAILURE(status)) { |
1da177e4 | 1375 | result = -ENODEV; |
3f655ef8 | 1376 | goto remove_fs; |
1da177e4 LT |
1377 | } |
1378 | ||
1379 | printk(KERN_INFO PREFIX "%s [%s] (%ld C)\n", | |
4be44fcd LB |
1380 | acpi_device_name(device), acpi_device_bid(device), |
1381 | KELVIN_TO_CELSIUS(tz->temperature)); | |
3f655ef8 | 1382 | goto end; |
1da177e4 | 1383 | |
3f655ef8 ZR |
1384 | remove_fs: |
1385 | acpi_thermal_remove_fs(device); | |
1386 | unregister_thermal_zone: | |
1387 | thermal_zone_device_unregister(tz->thermal_zone); | |
1388 | free_memory: | |
1389 | kfree(tz); | |
1390 | end: | |
d550d98d | 1391 | return result; |
1da177e4 LT |
1392 | } |
1393 | ||
4be44fcd | 1394 | static int acpi_thermal_remove(struct acpi_device *device, int type) |
1da177e4 | 1395 | { |
4be44fcd LB |
1396 | acpi_status status = AE_OK; |
1397 | struct acpi_thermal *tz = NULL; | |
1da177e4 | 1398 | |
1da177e4 | 1399 | if (!device || !acpi_driver_data(device)) |
d550d98d | 1400 | return -EINVAL; |
1da177e4 | 1401 | |
50dd0969 | 1402 | tz = acpi_driver_data(device); |
1da177e4 | 1403 | |
38ba7c9e | 1404 | status = acpi_remove_notify_handler(device->handle, |
4be44fcd LB |
1405 | ACPI_DEVICE_NOTIFY, |
1406 | acpi_thermal_notify); | |
1da177e4 | 1407 | |
1da177e4 | 1408 | acpi_thermal_remove_fs(device); |
3f655ef8 | 1409 | acpi_thermal_unregister_thermal_zone(tz); |
6e215785 | 1410 | mutex_destroy(&tz->lock); |
1da177e4 | 1411 | kfree(tz); |
d550d98d | 1412 | return 0; |
1da177e4 LT |
1413 | } |
1414 | ||
5d9464a4 | 1415 | static int acpi_thermal_resume(struct acpi_device *device) |
74ce1468 KK |
1416 | { |
1417 | struct acpi_thermal *tz = NULL; | |
b1028c54 KK |
1418 | int i, j, power_state, result; |
1419 | ||
74ce1468 KK |
1420 | |
1421 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 1422 | return -EINVAL; |
74ce1468 | 1423 | |
50dd0969 | 1424 | tz = acpi_driver_data(device); |
74ce1468 | 1425 | |
bed936f7 | 1426 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { |
b1028c54 KK |
1427 | if (!(&tz->trips.active[i])) |
1428 | break; | |
1429 | if (!tz->trips.active[i].flags.valid) | |
1430 | break; | |
1431 | tz->trips.active[i].flags.enabled = 1; | |
1432 | for (j = 0; j < tz->trips.active[i].devices.count; j++) { | |
1433 | result = acpi_bus_get_power(tz->trips.active[i].devices. | |
1434 | handles[j], &power_state); | |
1435 | if (result || (power_state != ACPI_STATE_D0)) { | |
1436 | tz->trips.active[i].flags.enabled = 0; | |
1437 | break; | |
1438 | } | |
bed936f7 | 1439 | } |
b1028c54 | 1440 | tz->state.active |= tz->trips.active[i].flags.enabled; |
bed936f7 KK |
1441 | } |
1442 | ||
b1028c54 | 1443 | acpi_thermal_check(tz); |
74ce1468 KK |
1444 | |
1445 | return AE_OK; | |
1446 | } | |
1447 | ||
1855256c | 1448 | static int thermal_act(const struct dmi_system_id *d) { |
0b5bfa1c LB |
1449 | |
1450 | if (act == 0) { | |
1451 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1452 | "disabling all active thermal trip points\n", d->ident); | |
1453 | act = -1; | |
1454 | } | |
1455 | return 0; | |
1456 | } | |
1855256c | 1457 | static int thermal_nocrt(const struct dmi_system_id *d) { |
8c99fdce LB |
1458 | |
1459 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1460 | "disabling all critical thermal trip point actions.\n", d->ident); | |
1461 | nocrt = 1; | |
1462 | return 0; | |
1463 | } | |
1855256c | 1464 | static int thermal_tzp(const struct dmi_system_id *d) { |
0b5bfa1c LB |
1465 | |
1466 | if (tzp == 0) { | |
1467 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1468 | "enabling thermal zone polling\n", d->ident); | |
1469 | tzp = 300; /* 300 dS = 30 Seconds */ | |
1470 | } | |
1471 | return 0; | |
1472 | } | |
1855256c | 1473 | static int thermal_psv(const struct dmi_system_id *d) { |
0b5bfa1c LB |
1474 | |
1475 | if (psv == 0) { | |
1476 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1477 | "disabling all passive thermal trip points\n", d->ident); | |
1478 | psv = -1; | |
1479 | } | |
1480 | return 0; | |
1481 | } | |
1482 | ||
1483 | static struct dmi_system_id thermal_dmi_table[] __initdata = { | |
1484 | /* | |
1485 | * Award BIOS on this AOpen makes thermal control almost worthless. | |
1486 | * http://bugzilla.kernel.org/show_bug.cgi?id=8842 | |
1487 | */ | |
1488 | { | |
1489 | .callback = thermal_act, | |
1490 | .ident = "AOpen i915GMm-HFS", | |
1491 | .matches = { | |
1492 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
1493 | DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), | |
1494 | }, | |
1495 | }, | |
1496 | { | |
1497 | .callback = thermal_psv, | |
1498 | .ident = "AOpen i915GMm-HFS", | |
1499 | .matches = { | |
1500 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
1501 | DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), | |
1502 | }, | |
1503 | }, | |
1504 | { | |
1505 | .callback = thermal_tzp, | |
1506 | .ident = "AOpen i915GMm-HFS", | |
1507 | .matches = { | |
1508 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
1509 | DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), | |
1510 | }, | |
1511 | }, | |
8c99fdce LB |
1512 | { |
1513 | .callback = thermal_nocrt, | |
1514 | .ident = "Gigabyte GA-7ZX", | |
1515 | .matches = { | |
1516 | DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co., Ltd."), | |
1517 | DMI_MATCH(DMI_BOARD_NAME, "7ZX"), | |
1518 | }, | |
1519 | }, | |
0b5bfa1c LB |
1520 | {} |
1521 | }; | |
0b5bfa1c | 1522 | |
4be44fcd | 1523 | static int __init acpi_thermal_init(void) |
1da177e4 | 1524 | { |
4be44fcd | 1525 | int result = 0; |
1da177e4 | 1526 | |
0b5bfa1c LB |
1527 | dmi_check_system(thermal_dmi_table); |
1528 | ||
72b33ef8 LB |
1529 | if (off) { |
1530 | printk(KERN_NOTICE "ACPI: thermal control disabled\n"); | |
1531 | return -ENODEV; | |
1532 | } | |
1da177e4 LT |
1533 | acpi_thermal_dir = proc_mkdir(ACPI_THERMAL_CLASS, acpi_root_dir); |
1534 | if (!acpi_thermal_dir) | |
d550d98d | 1535 | return -ENODEV; |
1da177e4 LT |
1536 | |
1537 | result = acpi_bus_register_driver(&acpi_thermal_driver); | |
1538 | if (result < 0) { | |
1539 | remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir); | |
d550d98d | 1540 | return -ENODEV; |
1da177e4 LT |
1541 | } |
1542 | ||
d550d98d | 1543 | return 0; |
1da177e4 LT |
1544 | } |
1545 | ||
4be44fcd | 1546 | static void __exit acpi_thermal_exit(void) |
1da177e4 | 1547 | { |
1da177e4 LT |
1548 | |
1549 | acpi_bus_unregister_driver(&acpi_thermal_driver); | |
1550 | ||
1551 | remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir); | |
1552 | ||
d550d98d | 1553 | return; |
1da177e4 LT |
1554 | } |
1555 | ||
1da177e4 LT |
1556 | module_init(acpi_thermal_init); |
1557 | module_exit(acpi_thermal_exit); |