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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); |
342d550d | 101 | static void acpi_thermal_notify(struct acpi_device *device, u32 event); |
1da177e4 LT |
102 | static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file); |
103 | static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file); | |
104 | static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file); | |
1da177e4 | 105 | static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file); |
4be44fcd LB |
106 | static ssize_t acpi_thermal_write_cooling_mode(struct file *, |
107 | const char __user *, size_t, | |
108 | loff_t *); | |
1da177e4 | 109 | static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file); |
4be44fcd LB |
110 | static ssize_t acpi_thermal_write_polling(struct file *, const char __user *, |
111 | size_t, loff_t *); | |
1da177e4 | 112 | |
1ba90e3a TR |
113 | static const struct acpi_device_id thermal_device_ids[] = { |
114 | {ACPI_THERMAL_HID, 0}, | |
115 | {"", 0}, | |
116 | }; | |
117 | MODULE_DEVICE_TABLE(acpi, thermal_device_ids); | |
118 | ||
1da177e4 | 119 | static struct acpi_driver acpi_thermal_driver = { |
c2b6705b | 120 | .name = "thermal", |
4be44fcd | 121 | .class = ACPI_THERMAL_CLASS, |
1ba90e3a | 122 | .ids = thermal_device_ids, |
4be44fcd LB |
123 | .ops = { |
124 | .add = acpi_thermal_add, | |
125 | .remove = acpi_thermal_remove, | |
74ce1468 | 126 | .resume = acpi_thermal_resume, |
342d550d | 127 | .notify = acpi_thermal_notify, |
4be44fcd | 128 | }, |
1da177e4 LT |
129 | }; |
130 | ||
131 | struct acpi_thermal_state { | |
4be44fcd LB |
132 | u8 critical:1; |
133 | u8 hot:1; | |
134 | u8 passive:1; | |
135 | u8 active:1; | |
136 | u8 reserved:4; | |
137 | int active_index; | |
1da177e4 LT |
138 | }; |
139 | ||
140 | struct acpi_thermal_state_flags { | |
4be44fcd LB |
141 | u8 valid:1; |
142 | u8 enabled:1; | |
143 | u8 reserved:6; | |
1da177e4 LT |
144 | }; |
145 | ||
146 | struct acpi_thermal_critical { | |
147 | struct acpi_thermal_state_flags flags; | |
4be44fcd | 148 | unsigned long temperature; |
1da177e4 LT |
149 | }; |
150 | ||
151 | struct acpi_thermal_hot { | |
152 | struct acpi_thermal_state_flags flags; | |
4be44fcd | 153 | unsigned long temperature; |
1da177e4 LT |
154 | }; |
155 | ||
156 | struct acpi_thermal_passive { | |
157 | struct acpi_thermal_state_flags flags; | |
4be44fcd LB |
158 | unsigned long temperature; |
159 | unsigned long tc1; | |
160 | unsigned long tc2; | |
161 | unsigned long tsp; | |
162 | struct acpi_handle_list devices; | |
1da177e4 LT |
163 | }; |
164 | ||
165 | struct acpi_thermal_active { | |
166 | struct acpi_thermal_state_flags flags; | |
4be44fcd LB |
167 | unsigned long temperature; |
168 | struct acpi_handle_list devices; | |
1da177e4 LT |
169 | }; |
170 | ||
171 | struct acpi_thermal_trips { | |
172 | struct acpi_thermal_critical critical; | |
4be44fcd | 173 | struct acpi_thermal_hot hot; |
1da177e4 LT |
174 | struct acpi_thermal_passive passive; |
175 | struct acpi_thermal_active active[ACPI_THERMAL_MAX_ACTIVE]; | |
176 | }; | |
177 | ||
178 | struct acpi_thermal_flags { | |
4be44fcd LB |
179 | u8 cooling_mode:1; /* _SCP */ |
180 | u8 devices:1; /* _TZD */ | |
181 | u8 reserved:6; | |
1da177e4 LT |
182 | }; |
183 | ||
184 | struct acpi_thermal { | |
8348e1b1 | 185 | struct acpi_device * device; |
4be44fcd LB |
186 | acpi_bus_id name; |
187 | unsigned long temperature; | |
188 | unsigned long last_temperature; | |
189 | unsigned long polling_frequency; | |
4be44fcd | 190 | volatile u8 zombie; |
1da177e4 LT |
191 | struct acpi_thermal_flags flags; |
192 | struct acpi_thermal_state state; | |
193 | struct acpi_thermal_trips trips; | |
4be44fcd | 194 | struct acpi_handle_list devices; |
3f655ef8 ZR |
195 | struct thermal_zone_device *thermal_zone; |
196 | int tz_enabled; | |
13614e37 | 197 | int kelvin_offset; |
6e215785 | 198 | struct mutex lock; |
1da177e4 LT |
199 | }; |
200 | ||
d7508032 | 201 | static const struct file_operations acpi_thermal_state_fops = { |
cf7acfab | 202 | .owner = THIS_MODULE, |
4be44fcd LB |
203 | .open = acpi_thermal_state_open_fs, |
204 | .read = seq_read, | |
205 | .llseek = seq_lseek, | |
206 | .release = single_release, | |
1da177e4 LT |
207 | }; |
208 | ||
d7508032 | 209 | static const struct file_operations acpi_thermal_temp_fops = { |
cf7acfab | 210 | .owner = THIS_MODULE, |
4be44fcd LB |
211 | .open = acpi_thermal_temp_open_fs, |
212 | .read = seq_read, | |
213 | .llseek = seq_lseek, | |
214 | .release = single_release, | |
1da177e4 LT |
215 | }; |
216 | ||
d7508032 | 217 | static const struct file_operations acpi_thermal_trip_fops = { |
cf7acfab | 218 | .owner = THIS_MODULE, |
4be44fcd LB |
219 | .open = acpi_thermal_trip_open_fs, |
220 | .read = seq_read, | |
4be44fcd LB |
221 | .llseek = seq_lseek, |
222 | .release = single_release, | |
1da177e4 LT |
223 | }; |
224 | ||
d7508032 | 225 | static const struct file_operations acpi_thermal_cooling_fops = { |
cf7acfab | 226 | .owner = THIS_MODULE, |
4be44fcd LB |
227 | .open = acpi_thermal_cooling_open_fs, |
228 | .read = seq_read, | |
229 | .write = acpi_thermal_write_cooling_mode, | |
230 | .llseek = seq_lseek, | |
231 | .release = single_release, | |
1da177e4 LT |
232 | }; |
233 | ||
d7508032 | 234 | static const struct file_operations acpi_thermal_polling_fops = { |
cf7acfab | 235 | .owner = THIS_MODULE, |
4be44fcd LB |
236 | .open = acpi_thermal_polling_open_fs, |
237 | .read = seq_read, | |
238 | .write = acpi_thermal_write_polling, | |
239 | .llseek = seq_lseek, | |
240 | .release = single_release, | |
1da177e4 LT |
241 | }; |
242 | ||
243 | /* -------------------------------------------------------------------------- | |
244 | Thermal Zone Management | |
245 | -------------------------------------------------------------------------- */ | |
246 | ||
4be44fcd | 247 | static int acpi_thermal_get_temperature(struct acpi_thermal *tz) |
1da177e4 | 248 | { |
4be44fcd | 249 | acpi_status status = AE_OK; |
27663c58 | 250 | unsigned long long tmp; |
1da177e4 LT |
251 | |
252 | if (!tz) | |
d550d98d | 253 | return -EINVAL; |
1da177e4 LT |
254 | |
255 | tz->last_temperature = tz->temperature; | |
256 | ||
27663c58 | 257 | status = acpi_evaluate_integer(tz->device->handle, "_TMP", NULL, &tmp); |
1da177e4 | 258 | if (ACPI_FAILURE(status)) |
d550d98d | 259 | return -ENODEV; |
1da177e4 | 260 | |
27663c58 | 261 | tz->temperature = tmp; |
4be44fcd LB |
262 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Temperature is %lu dK\n", |
263 | tz->temperature)); | |
1da177e4 | 264 | |
d550d98d | 265 | return 0; |
1da177e4 LT |
266 | } |
267 | ||
4be44fcd | 268 | static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz) |
1da177e4 | 269 | { |
4be44fcd | 270 | acpi_status status = AE_OK; |
27663c58 | 271 | unsigned long long tmp; |
1da177e4 LT |
272 | |
273 | if (!tz) | |
d550d98d | 274 | return -EINVAL; |
1da177e4 | 275 | |
27663c58 | 276 | status = acpi_evaluate_integer(tz->device->handle, "_TZP", NULL, &tmp); |
1da177e4 | 277 | if (ACPI_FAILURE(status)) |
d550d98d | 278 | return -ENODEV; |
1da177e4 | 279 | |
27663c58 | 280 | tz->polling_frequency = tmp; |
4be44fcd LB |
281 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Polling frequency is %lu dS\n", |
282 | tz->polling_frequency)); | |
1da177e4 | 283 | |
d550d98d | 284 | return 0; |
1da177e4 LT |
285 | } |
286 | ||
4be44fcd | 287 | static int acpi_thermal_set_polling(struct acpi_thermal *tz, int seconds) |
1da177e4 | 288 | { |
1da177e4 LT |
289 | |
290 | if (!tz) | |
d550d98d | 291 | return -EINVAL; |
1da177e4 LT |
292 | |
293 | tz->polling_frequency = seconds * 10; /* Convert value to deci-seconds */ | |
294 | ||
b1569e99 MG |
295 | tz->thermal_zone->polling_delay = seconds * 1000; |
296 | ||
297 | if (tz->tz_enabled) | |
298 | thermal_zone_device_update(tz->thermal_zone); | |
299 | ||
4be44fcd LB |
300 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
301 | "Polling frequency set to %lu seconds\n", | |
636cedf9 | 302 | tz->polling_frequency/10)); |
1da177e4 | 303 | |
d550d98d | 304 | return 0; |
1da177e4 LT |
305 | } |
306 | ||
4be44fcd | 307 | static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode) |
1da177e4 | 308 | { |
4be44fcd LB |
309 | acpi_status status = AE_OK; |
310 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
311 | struct acpi_object_list arg_list = { 1, &arg0 }; | |
312 | acpi_handle handle = NULL; | |
1da177e4 | 313 | |
1da177e4 LT |
314 | |
315 | if (!tz) | |
d550d98d | 316 | return -EINVAL; |
1da177e4 | 317 | |
38ba7c9e | 318 | status = acpi_get_handle(tz->device->handle, "_SCP", &handle); |
1da177e4 LT |
319 | if (ACPI_FAILURE(status)) { |
320 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n")); | |
d550d98d | 321 | return -ENODEV; |
1da177e4 LT |
322 | } |
323 | ||
324 | arg0.integer.value = mode; | |
325 | ||
326 | status = acpi_evaluate_object(handle, NULL, &arg_list, NULL); | |
327 | if (ACPI_FAILURE(status)) | |
d550d98d | 328 | return -ENODEV; |
1da177e4 | 329 | |
d550d98d | 330 | return 0; |
1da177e4 LT |
331 | } |
332 | ||
ce44e197 ZR |
333 | #define ACPI_TRIPS_CRITICAL 0x01 |
334 | #define ACPI_TRIPS_HOT 0x02 | |
335 | #define ACPI_TRIPS_PASSIVE 0x04 | |
336 | #define ACPI_TRIPS_ACTIVE 0x08 | |
337 | #define ACPI_TRIPS_DEVICES 0x10 | |
1da177e4 | 338 | |
ce44e197 ZR |
339 | #define ACPI_TRIPS_REFRESH_THRESHOLDS (ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE) |
340 | #define ACPI_TRIPS_REFRESH_DEVICES ACPI_TRIPS_DEVICES | |
1da177e4 | 341 | |
ce44e197 ZR |
342 | #define ACPI_TRIPS_INIT (ACPI_TRIPS_CRITICAL | ACPI_TRIPS_HOT | \ |
343 | ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE | \ | |
344 | ACPI_TRIPS_DEVICES) | |
1da177e4 | 345 | |
ce44e197 ZR |
346 | /* |
347 | * This exception is thrown out in two cases: | |
348 | * 1.An invalid trip point becomes invalid or a valid trip point becomes invalid | |
349 | * when re-evaluating the AML code. | |
350 | * 2.TODO: Devices listed in _PSL, _ALx, _TZD may change. | |
351 | * We need to re-bind the cooling devices of a thermal zone when this occurs. | |
352 | */ | |
353 | #define ACPI_THERMAL_TRIPS_EXCEPTION(flags, str) \ | |
354 | do { \ | |
355 | if (flags != ACPI_TRIPS_INIT) \ | |
356 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, \ | |
357 | "ACPI thermal trip point %s changed\n" \ | |
358 | "Please send acpidump to linux-acpi@vger.kernel.org\n", str)); \ | |
359 | } while (0) | |
360 | ||
361 | static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) | |
362 | { | |
363 | acpi_status status = AE_OK; | |
27663c58 | 364 | unsigned long long tmp; |
ce44e197 ZR |
365 | struct acpi_handle_list devices; |
366 | int valid = 0; | |
367 | int i; | |
1da177e4 | 368 | |
ce44e197 ZR |
369 | /* Critical Shutdown (required) */ |
370 | if (flag & ACPI_TRIPS_CRITICAL) { | |
371 | status = acpi_evaluate_integer(tz->device->handle, | |
27663c58 MW |
372 | "_CRT", NULL, &tmp); |
373 | tz->trips.critical.temperature = tmp; | |
a39a2d7c AV |
374 | /* |
375 | * Treat freezing temperatures as invalid as well; some | |
376 | * BIOSes return really low values and cause reboots at startup. | |
b731d7b6 | 377 | * Below zero (Celsius) values clearly aren't right for sure.. |
a39a2d7c AV |
378 | * ... so lets discard those as invalid. |
379 | */ | |
380 | if (ACPI_FAILURE(status) || | |
381 | tz->trips.critical.temperature <= 2732) { | |
c52a7419 | 382 | tz->trips.critical.flags.valid = 0; |
ce44e197 | 383 | ACPI_EXCEPTION((AE_INFO, status, |
a39a2d7c | 384 | "No or invalid critical threshold")); |
ce44e197 ZR |
385 | return -ENODEV; |
386 | } else { | |
387 | tz->trips.critical.flags.valid = 1; | |
388 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
389 | "Found critical threshold [%lu]\n", | |
390 | tz->trips.critical.temperature)); | |
391 | } | |
392 | if (tz->trips.critical.flags.valid == 1) { | |
393 | if (crt == -1) { | |
394 | tz->trips.critical.flags.valid = 0; | |
395 | } else if (crt > 0) { | |
396 | unsigned long crt_k = CELSIUS_TO_KELVIN(crt); | |
397 | /* | |
22a94d79 | 398 | * Allow override critical threshold |
ce44e197 | 399 | */ |
22a94d79 ZR |
400 | if (crt_k > tz->trips.critical.temperature) |
401 | printk(KERN_WARNING PREFIX | |
402 | "Critical threshold %d C\n", crt); | |
403 | tz->trips.critical.temperature = crt_k; | |
ce44e197 | 404 | } |
c52a7419 LB |
405 | } |
406 | } | |
407 | ||
1da177e4 | 408 | /* Critical Sleep (optional) */ |
ce44e197 | 409 | if (flag & ACPI_TRIPS_HOT) { |
a70cdc52 | 410 | status = acpi_evaluate_integer(tz->device->handle, |
27663c58 | 411 | "_HOT", NULL, &tmp); |
ce44e197 ZR |
412 | if (ACPI_FAILURE(status)) { |
413 | tz->trips.hot.flags.valid = 0; | |
414 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
415 | "No hot threshold\n")); | |
416 | } else { | |
27663c58 | 417 | tz->trips.hot.temperature = tmp; |
ce44e197 ZR |
418 | tz->trips.hot.flags.valid = 1; |
419 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
420 | "Found hot threshold [%lu]\n", | |
421 | tz->trips.critical.temperature)); | |
422 | } | |
a70cdc52 LB |
423 | } |
424 | ||
ce44e197 | 425 | /* Passive (optional) */ |
0e4240d9 ZR |
426 | if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips.passive.flags.valid) || |
427 | (flag == ACPI_TRIPS_INIT)) { | |
ce44e197 ZR |
428 | valid = tz->trips.passive.flags.valid; |
429 | if (psv == -1) { | |
430 | status = AE_SUPPORT; | |
431 | } else if (psv > 0) { | |
27663c58 | 432 | tmp = CELSIUS_TO_KELVIN(psv); |
ce44e197 ZR |
433 | status = AE_OK; |
434 | } else { | |
435 | status = acpi_evaluate_integer(tz->device->handle, | |
27663c58 | 436 | "_PSV", NULL, &tmp); |
ce44e197 | 437 | } |
1da177e4 | 438 | |
1da177e4 LT |
439 | if (ACPI_FAILURE(status)) |
440 | tz->trips.passive.flags.valid = 0; | |
ce44e197 | 441 | else { |
27663c58 | 442 | tz->trips.passive.temperature = tmp; |
ce44e197 ZR |
443 | tz->trips.passive.flags.valid = 1; |
444 | if (flag == ACPI_TRIPS_INIT) { | |
445 | status = acpi_evaluate_integer( | |
446 | tz->device->handle, "_TC1", | |
27663c58 | 447 | NULL, &tmp); |
ce44e197 ZR |
448 | if (ACPI_FAILURE(status)) |
449 | tz->trips.passive.flags.valid = 0; | |
27663c58 MW |
450 | else |
451 | tz->trips.passive.tc1 = tmp; | |
ce44e197 ZR |
452 | status = acpi_evaluate_integer( |
453 | tz->device->handle, "_TC2", | |
27663c58 | 454 | NULL, &tmp); |
ce44e197 ZR |
455 | if (ACPI_FAILURE(status)) |
456 | tz->trips.passive.flags.valid = 0; | |
27663c58 MW |
457 | else |
458 | tz->trips.passive.tc2 = tmp; | |
ce44e197 ZR |
459 | status = acpi_evaluate_integer( |
460 | tz->device->handle, "_TSP", | |
27663c58 | 461 | NULL, &tmp); |
ce44e197 ZR |
462 | if (ACPI_FAILURE(status)) |
463 | tz->trips.passive.flags.valid = 0; | |
27663c58 MW |
464 | else |
465 | tz->trips.passive.tsp = tmp; | |
ce44e197 ZR |
466 | } |
467 | } | |
468 | } | |
469 | if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.passive.flags.valid) { | |
470 | memset(&devices, 0, sizeof(struct acpi_handle_list)); | |
471 | status = acpi_evaluate_reference(tz->device->handle, "_PSL", | |
472 | NULL, &devices); | |
0e4240d9 ZR |
473 | if (ACPI_FAILURE(status)) { |
474 | printk(KERN_WARNING PREFIX | |
475 | "Invalid passive threshold\n"); | |
1da177e4 | 476 | tz->trips.passive.flags.valid = 0; |
0e4240d9 | 477 | } |
1da177e4 | 478 | else |
ce44e197 | 479 | tz->trips.passive.flags.valid = 1; |
1da177e4 | 480 | |
ce44e197 ZR |
481 | if (memcmp(&tz->trips.passive.devices, &devices, |
482 | sizeof(struct acpi_handle_list))) { | |
483 | memcpy(&tz->trips.passive.devices, &devices, | |
484 | sizeof(struct acpi_handle_list)); | |
485 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); | |
486 | } | |
487 | } | |
488 | if ((flag & ACPI_TRIPS_PASSIVE) || (flag & ACPI_TRIPS_DEVICES)) { | |
489 | if (valid != tz->trips.passive.flags.valid) | |
490 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "state"); | |
491 | } | |
1da177e4 | 492 | |
ce44e197 | 493 | /* Active (optional) */ |
4be44fcd | 494 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { |
4be44fcd | 495 | char name[5] = { '_', 'A', 'C', ('0' + i), '\0' }; |
ce44e197 | 496 | valid = tz->trips.active[i].flags.valid; |
1da177e4 | 497 | |
f8707ec9 | 498 | if (act == -1) |
ce44e197 ZR |
499 | break; /* disable all active trip points */ |
500 | ||
0e4240d9 ZR |
501 | if ((flag == ACPI_TRIPS_INIT) || ((flag & ACPI_TRIPS_ACTIVE) && |
502 | tz->trips.active[i].flags.valid)) { | |
ce44e197 | 503 | status = acpi_evaluate_integer(tz->device->handle, |
27663c58 | 504 | name, NULL, &tmp); |
ce44e197 ZR |
505 | if (ACPI_FAILURE(status)) { |
506 | tz->trips.active[i].flags.valid = 0; | |
507 | if (i == 0) | |
508 | break; | |
509 | if (act <= 0) | |
510 | break; | |
511 | if (i == 1) | |
512 | tz->trips.active[0].temperature = | |
513 | CELSIUS_TO_KELVIN(act); | |
514 | else | |
515 | /* | |
516 | * Don't allow override higher than | |
517 | * the next higher trip point | |
518 | */ | |
519 | tz->trips.active[i - 1].temperature = | |
520 | (tz->trips.active[i - 2].temperature < | |
521 | CELSIUS_TO_KELVIN(act) ? | |
522 | tz->trips.active[i - 2].temperature : | |
523 | CELSIUS_TO_KELVIN(act)); | |
f8707ec9 | 524 | break; |
27663c58 MW |
525 | } else { |
526 | tz->trips.active[i].temperature = tmp; | |
ce44e197 | 527 | tz->trips.active[i].flags.valid = 1; |
27663c58 | 528 | } |
f8707ec9 | 529 | } |
1da177e4 LT |
530 | |
531 | name[2] = 'L'; | |
ce44e197 ZR |
532 | if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.active[i].flags.valid ) { |
533 | memset(&devices, 0, sizeof(struct acpi_handle_list)); | |
534 | status = acpi_evaluate_reference(tz->device->handle, | |
535 | name, NULL, &devices); | |
0e4240d9 ZR |
536 | if (ACPI_FAILURE(status)) { |
537 | printk(KERN_WARNING PREFIX | |
538 | "Invalid active%d threshold\n", i); | |
ce44e197 | 539 | tz->trips.active[i].flags.valid = 0; |
0e4240d9 | 540 | } |
ce44e197 ZR |
541 | else |
542 | tz->trips.active[i].flags.valid = 1; | |
543 | ||
544 | if (memcmp(&tz->trips.active[i].devices, &devices, | |
545 | sizeof(struct acpi_handle_list))) { | |
546 | memcpy(&tz->trips.active[i].devices, &devices, | |
547 | sizeof(struct acpi_handle_list)); | |
548 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); | |
549 | } | |
550 | } | |
551 | if ((flag & ACPI_TRIPS_ACTIVE) || (flag & ACPI_TRIPS_DEVICES)) | |
552 | if (valid != tz->trips.active[i].flags.valid) | |
553 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "state"); | |
554 | ||
555 | if (!tz->trips.active[i].flags.valid) | |
556 | break; | |
557 | } | |
558 | ||
559 | if (flag & ACPI_TRIPS_DEVICES) { | |
560 | memset(&devices, 0, sizeof(struct acpi_handle_list)); | |
561 | status = acpi_evaluate_reference(tz->device->handle, "_TZD", | |
562 | NULL, &devices); | |
563 | if (memcmp(&tz->devices, &devices, | |
564 | sizeof(struct acpi_handle_list))) { | |
565 | memcpy(&tz->devices, &devices, | |
566 | sizeof(struct acpi_handle_list)); | |
567 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); | |
568 | } | |
1da177e4 LT |
569 | } |
570 | ||
d550d98d | 571 | return 0; |
1da177e4 LT |
572 | } |
573 | ||
ce44e197 | 574 | static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) |
1da177e4 | 575 | { |
ce44e197 | 576 | return acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT); |
1da177e4 LT |
577 | } |
578 | ||
4be44fcd | 579 | static void acpi_thermal_check(void *data) |
1da177e4 | 580 | { |
50dd0969 | 581 | struct acpi_thermal *tz = data; |
1da177e4 | 582 | |
b1569e99 | 583 | thermal_zone_device_update(tz->thermal_zone); |
1da177e4 LT |
584 | } |
585 | ||
3f655ef8 | 586 | /* sys I/F for generic thermal sysfs support */ |
13614e37 | 587 | #define KELVIN_TO_MILLICELSIUS(t, off) (((t) - (off)) * 100) |
5e012760 | 588 | |
6503e5df MG |
589 | static int thermal_get_temp(struct thermal_zone_device *thermal, |
590 | unsigned long *temp) | |
3f655ef8 ZR |
591 | { |
592 | struct acpi_thermal *tz = thermal->devdata; | |
76ecb4f2 | 593 | int result; |
3f655ef8 ZR |
594 | |
595 | if (!tz) | |
596 | return -EINVAL; | |
597 | ||
76ecb4f2 ZR |
598 | result = acpi_thermal_get_temperature(tz); |
599 | if (result) | |
600 | return result; | |
601 | ||
13614e37 | 602 | *temp = KELVIN_TO_MILLICELSIUS(tz->temperature, tz->kelvin_offset); |
6503e5df | 603 | return 0; |
3f655ef8 ZR |
604 | } |
605 | ||
606 | static const char enabled[] = "kernel"; | |
607 | static const char disabled[] = "user"; | |
608 | static int thermal_get_mode(struct thermal_zone_device *thermal, | |
6503e5df | 609 | enum thermal_device_mode *mode) |
3f655ef8 ZR |
610 | { |
611 | struct acpi_thermal *tz = thermal->devdata; | |
612 | ||
613 | if (!tz) | |
614 | return -EINVAL; | |
615 | ||
6503e5df MG |
616 | *mode = tz->tz_enabled ? THERMAL_DEVICE_ENABLED : |
617 | THERMAL_DEVICE_DISABLED; | |
618 | ||
619 | return 0; | |
3f655ef8 ZR |
620 | } |
621 | ||
622 | static int thermal_set_mode(struct thermal_zone_device *thermal, | |
6503e5df | 623 | enum thermal_device_mode mode) |
3f655ef8 ZR |
624 | { |
625 | struct acpi_thermal *tz = thermal->devdata; | |
626 | int enable; | |
627 | ||
628 | if (!tz) | |
629 | return -EINVAL; | |
630 | ||
631 | /* | |
632 | * enable/disable thermal management from ACPI thermal driver | |
633 | */ | |
6503e5df | 634 | if (mode == THERMAL_DEVICE_ENABLED) |
3f655ef8 | 635 | enable = 1; |
6503e5df | 636 | else if (mode == THERMAL_DEVICE_DISABLED) |
3f655ef8 ZR |
637 | enable = 0; |
638 | else | |
639 | return -EINVAL; | |
640 | ||
641 | if (enable != tz->tz_enabled) { | |
642 | tz->tz_enabled = enable; | |
643 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
644 | "%s ACPI thermal control\n", | |
645 | tz->tz_enabled ? enabled : disabled)); | |
646 | acpi_thermal_check(tz); | |
647 | } | |
648 | return 0; | |
649 | } | |
650 | ||
651 | static int thermal_get_trip_type(struct thermal_zone_device *thermal, | |
6503e5df | 652 | int trip, enum thermal_trip_type *type) |
3f655ef8 ZR |
653 | { |
654 | struct acpi_thermal *tz = thermal->devdata; | |
655 | int i; | |
656 | ||
657 | if (!tz || trip < 0) | |
658 | return -EINVAL; | |
659 | ||
660 | if (tz->trips.critical.flags.valid) { | |
6503e5df MG |
661 | if (!trip) { |
662 | *type = THERMAL_TRIP_CRITICAL; | |
663 | return 0; | |
664 | } | |
3f655ef8 ZR |
665 | trip--; |
666 | } | |
667 | ||
668 | if (tz->trips.hot.flags.valid) { | |
6503e5df MG |
669 | if (!trip) { |
670 | *type = THERMAL_TRIP_HOT; | |
671 | return 0; | |
672 | } | |
3f655ef8 ZR |
673 | trip--; |
674 | } | |
675 | ||
676 | if (tz->trips.passive.flags.valid) { | |
6503e5df MG |
677 | if (!trip) { |
678 | *type = THERMAL_TRIP_PASSIVE; | |
679 | return 0; | |
680 | } | |
3f655ef8 ZR |
681 | trip--; |
682 | } | |
683 | ||
684 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && | |
685 | tz->trips.active[i].flags.valid; i++) { | |
6503e5df MG |
686 | if (!trip) { |
687 | *type = THERMAL_TRIP_ACTIVE; | |
688 | return 0; | |
689 | } | |
3f655ef8 ZR |
690 | trip--; |
691 | } | |
692 | ||
693 | return -EINVAL; | |
694 | } | |
695 | ||
696 | static int thermal_get_trip_temp(struct thermal_zone_device *thermal, | |
6503e5df | 697 | int trip, unsigned long *temp) |
3f655ef8 ZR |
698 | { |
699 | struct acpi_thermal *tz = thermal->devdata; | |
700 | int i; | |
701 | ||
702 | if (!tz || trip < 0) | |
703 | return -EINVAL; | |
704 | ||
705 | if (tz->trips.critical.flags.valid) { | |
6503e5df MG |
706 | if (!trip) { |
707 | *temp = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
708 | tz->trips.critical.temperature, |
709 | tz->kelvin_offset); | |
6503e5df MG |
710 | return 0; |
711 | } | |
3f655ef8 ZR |
712 | trip--; |
713 | } | |
714 | ||
715 | if (tz->trips.hot.flags.valid) { | |
6503e5df MG |
716 | if (!trip) { |
717 | *temp = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
718 | tz->trips.hot.temperature, |
719 | tz->kelvin_offset); | |
6503e5df MG |
720 | return 0; |
721 | } | |
3f655ef8 ZR |
722 | trip--; |
723 | } | |
724 | ||
725 | if (tz->trips.passive.flags.valid) { | |
6503e5df MG |
726 | if (!trip) { |
727 | *temp = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
728 | tz->trips.passive.temperature, |
729 | tz->kelvin_offset); | |
6503e5df MG |
730 | return 0; |
731 | } | |
3f655ef8 ZR |
732 | trip--; |
733 | } | |
734 | ||
735 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && | |
736 | tz->trips.active[i].flags.valid; i++) { | |
6503e5df MG |
737 | if (!trip) { |
738 | *temp = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
739 | tz->trips.active[i].temperature, |
740 | tz->kelvin_offset); | |
6503e5df MG |
741 | return 0; |
742 | } | |
3f655ef8 ZR |
743 | trip--; |
744 | } | |
745 | ||
746 | return -EINVAL; | |
747 | } | |
748 | ||
9ec732ff ZR |
749 | static int thermal_get_crit_temp(struct thermal_zone_device *thermal, |
750 | unsigned long *temperature) { | |
751 | struct acpi_thermal *tz = thermal->devdata; | |
752 | ||
753 | if (tz->trips.critical.flags.valid) { | |
754 | *temperature = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
755 | tz->trips.critical.temperature, |
756 | tz->kelvin_offset); | |
9ec732ff ZR |
757 | return 0; |
758 | } else | |
759 | return -EINVAL; | |
760 | } | |
761 | ||
b1569e99 MG |
762 | static int thermal_notify(struct thermal_zone_device *thermal, int trip, |
763 | enum thermal_trip_type trip_type) | |
764 | { | |
765 | u8 type = 0; | |
766 | struct acpi_thermal *tz = thermal->devdata; | |
767 | ||
768 | if (trip_type == THERMAL_TRIP_CRITICAL) | |
769 | type = ACPI_THERMAL_NOTIFY_CRITICAL; | |
770 | else if (trip_type == THERMAL_TRIP_HOT) | |
771 | type = ACPI_THERMAL_NOTIFY_HOT; | |
772 | else | |
773 | return 0; | |
774 | ||
775 | acpi_bus_generate_proc_event(tz->device, type, 1); | |
776 | acpi_bus_generate_netlink_event(tz->device->pnp.device_class, | |
f6f5c45e | 777 | dev_name(&tz->device->dev), type, 1); |
b1569e99 MG |
778 | |
779 | if (trip_type == THERMAL_TRIP_CRITICAL && nocrt) | |
780 | return 1; | |
781 | ||
782 | return 0; | |
783 | } | |
784 | ||
3f655ef8 ZR |
785 | typedef int (*cb)(struct thermal_zone_device *, int, |
786 | struct thermal_cooling_device *); | |
787 | static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, | |
788 | struct thermal_cooling_device *cdev, | |
789 | cb action) | |
790 | { | |
791 | struct acpi_device *device = cdev->devdata; | |
792 | struct acpi_thermal *tz = thermal->devdata; | |
653a00c9 ZR |
793 | struct acpi_device *dev; |
794 | acpi_status status; | |
795 | acpi_handle handle; | |
3f655ef8 ZR |
796 | int i; |
797 | int j; | |
798 | int trip = -1; | |
799 | int result = 0; | |
800 | ||
801 | if (tz->trips.critical.flags.valid) | |
802 | trip++; | |
803 | ||
804 | if (tz->trips.hot.flags.valid) | |
805 | trip++; | |
806 | ||
807 | if (tz->trips.passive.flags.valid) { | |
808 | trip++; | |
809 | for (i = 0; i < tz->trips.passive.devices.count; | |
810 | i++) { | |
653a00c9 ZR |
811 | handle = tz->trips.passive.devices.handles[i]; |
812 | status = acpi_bus_get_device(handle, &dev); | |
813 | if (ACPI_SUCCESS(status) && (dev == device)) { | |
814 | result = action(thermal, trip, cdev); | |
815 | if (result) | |
816 | goto failed; | |
817 | } | |
3f655ef8 ZR |
818 | } |
819 | } | |
820 | ||
821 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { | |
822 | if (!tz->trips.active[i].flags.valid) | |
823 | break; | |
824 | trip++; | |
825 | for (j = 0; | |
826 | j < tz->trips.active[i].devices.count; | |
827 | j++) { | |
653a00c9 ZR |
828 | handle = tz->trips.active[i].devices.handles[j]; |
829 | status = acpi_bus_get_device(handle, &dev); | |
830 | if (ACPI_SUCCESS(status) && (dev == device)) { | |
831 | result = action(thermal, trip, cdev); | |
832 | if (result) | |
833 | goto failed; | |
834 | } | |
3f655ef8 ZR |
835 | } |
836 | } | |
837 | ||
838 | for (i = 0; i < tz->devices.count; i++) { | |
653a00c9 ZR |
839 | handle = tz->devices.handles[i]; |
840 | status = acpi_bus_get_device(handle, &dev); | |
841 | if (ACPI_SUCCESS(status) && (dev == device)) { | |
842 | result = action(thermal, -1, cdev); | |
843 | if (result) | |
844 | goto failed; | |
845 | } | |
3f655ef8 ZR |
846 | } |
847 | ||
848 | failed: | |
849 | return result; | |
850 | } | |
851 | ||
852 | static int | |
853 | acpi_thermal_bind_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_bind_cooling_device); | |
858 | } | |
859 | ||
860 | static int | |
861 | acpi_thermal_unbind_cooling_device(struct thermal_zone_device *thermal, | |
862 | struct thermal_cooling_device *cdev) | |
863 | { | |
864 | return acpi_thermal_cooling_device_cb(thermal, cdev, | |
865 | thermal_zone_unbind_cooling_device); | |
866 | } | |
867 | ||
868 | static struct thermal_zone_device_ops acpi_thermal_zone_ops = { | |
869 | .bind = acpi_thermal_bind_cooling_device, | |
870 | .unbind = acpi_thermal_unbind_cooling_device, | |
871 | .get_temp = thermal_get_temp, | |
872 | .get_mode = thermal_get_mode, | |
873 | .set_mode = thermal_set_mode, | |
874 | .get_trip_type = thermal_get_trip_type, | |
875 | .get_trip_temp = thermal_get_trip_temp, | |
9ec732ff | 876 | .get_crit_temp = thermal_get_crit_temp, |
b1569e99 | 877 | .notify = thermal_notify, |
3f655ef8 ZR |
878 | }; |
879 | ||
880 | static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) | |
881 | { | |
882 | int trips = 0; | |
883 | int result; | |
20733939 | 884 | acpi_status status; |
3f655ef8 ZR |
885 | int i; |
886 | ||
887 | if (tz->trips.critical.flags.valid) | |
888 | trips++; | |
889 | ||
890 | if (tz->trips.hot.flags.valid) | |
891 | trips++; | |
892 | ||
893 | if (tz->trips.passive.flags.valid) | |
894 | trips++; | |
895 | ||
896 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && | |
897 | tz->trips.active[i].flags.valid; i++, trips++); | |
b1569e99 MG |
898 | |
899 | if (tz->trips.passive.flags.valid) | |
900 | tz->thermal_zone = | |
901 | thermal_zone_device_register("acpitz", trips, tz, | |
902 | &acpi_thermal_zone_ops, | |
903 | tz->trips.passive.tc1, | |
904 | tz->trips.passive.tc2, | |
905 | tz->trips.passive.tsp*100, | |
906 | tz->polling_frequency*100); | |
907 | else | |
908 | tz->thermal_zone = | |
909 | thermal_zone_device_register("acpitz", trips, tz, | |
910 | &acpi_thermal_zone_ops, | |
911 | 0, 0, 0, | |
67405439 | 912 | tz->polling_frequency*100); |
bb070e43 | 913 | if (IS_ERR(tz->thermal_zone)) |
3f655ef8 ZR |
914 | return -ENODEV; |
915 | ||
916 | result = sysfs_create_link(&tz->device->dev.kobj, | |
917 | &tz->thermal_zone->device.kobj, "thermal_zone"); | |
918 | if (result) | |
919 | return result; | |
920 | ||
921 | result = sysfs_create_link(&tz->thermal_zone->device.kobj, | |
922 | &tz->device->dev.kobj, "device"); | |
923 | if (result) | |
924 | return result; | |
925 | ||
20733939 ZR |
926 | status = acpi_attach_data(tz->device->handle, |
927 | acpi_bus_private_data_handler, | |
928 | tz->thermal_zone); | |
929 | if (ACPI_FAILURE(status)) { | |
55ac9a01 LM |
930 | printk(KERN_ERR PREFIX |
931 | "Error attaching device data\n"); | |
20733939 ZR |
932 | return -ENODEV; |
933 | } | |
934 | ||
3f655ef8 ZR |
935 | tz->tz_enabled = 1; |
936 | ||
fc3a8828 GKH |
937 | dev_info(&tz->device->dev, "registered as thermal_zone%d\n", |
938 | tz->thermal_zone->id); | |
3f655ef8 ZR |
939 | return 0; |
940 | } | |
941 | ||
942 | static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz) | |
943 | { | |
944 | sysfs_remove_link(&tz->device->dev.kobj, "thermal_zone"); | |
945 | sysfs_remove_link(&tz->thermal_zone->device.kobj, "device"); | |
946 | thermal_zone_device_unregister(tz->thermal_zone); | |
947 | tz->thermal_zone = NULL; | |
20733939 | 948 | acpi_detach_data(tz->device->handle, acpi_bus_private_data_handler); |
3f655ef8 ZR |
949 | } |
950 | ||
951 | ||
1da177e4 LT |
952 | /* -------------------------------------------------------------------------- |
953 | FS Interface (/proc) | |
954 | -------------------------------------------------------------------------- */ | |
955 | ||
4be44fcd | 956 | static struct proc_dir_entry *acpi_thermal_dir; |
1da177e4 LT |
957 | |
958 | static int acpi_thermal_state_seq_show(struct seq_file *seq, void *offset) | |
959 | { | |
50dd0969 | 960 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 961 | |
1da177e4 LT |
962 | |
963 | if (!tz) | |
964 | goto end; | |
965 | ||
966 | seq_puts(seq, "state: "); | |
967 | ||
4be44fcd LB |
968 | if (!tz->state.critical && !tz->state.hot && !tz->state.passive |
969 | && !tz->state.active) | |
1da177e4 LT |
970 | seq_puts(seq, "ok\n"); |
971 | else { | |
972 | if (tz->state.critical) | |
973 | seq_puts(seq, "critical "); | |
974 | if (tz->state.hot) | |
975 | seq_puts(seq, "hot "); | |
976 | if (tz->state.passive) | |
977 | seq_puts(seq, "passive "); | |
978 | if (tz->state.active) | |
979 | seq_printf(seq, "active[%d]", tz->state.active_index); | |
980 | seq_puts(seq, "\n"); | |
981 | } | |
982 | ||
4be44fcd | 983 | end: |
d550d98d | 984 | return 0; |
1da177e4 LT |
985 | } |
986 | ||
987 | static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file) | |
988 | { | |
989 | return single_open(file, acpi_thermal_state_seq_show, PDE(inode)->data); | |
990 | } | |
991 | ||
1da177e4 LT |
992 | static int acpi_thermal_temp_seq_show(struct seq_file *seq, void *offset) |
993 | { | |
4be44fcd | 994 | int result = 0; |
50dd0969 | 995 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 996 | |
1da177e4 LT |
997 | |
998 | if (!tz) | |
999 | goto end; | |
1000 | ||
1001 | result = acpi_thermal_get_temperature(tz); | |
1002 | if (result) | |
1003 | goto end; | |
1004 | ||
4be44fcd LB |
1005 | seq_printf(seq, "temperature: %ld C\n", |
1006 | KELVIN_TO_CELSIUS(tz->temperature)); | |
1da177e4 | 1007 | |
4be44fcd | 1008 | end: |
d550d98d | 1009 | return 0; |
1da177e4 LT |
1010 | } |
1011 | ||
1012 | static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file) | |
1013 | { | |
1014 | return single_open(file, acpi_thermal_temp_seq_show, PDE(inode)->data); | |
1015 | } | |
1016 | ||
1da177e4 LT |
1017 | static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset) |
1018 | { | |
50dd0969 | 1019 | struct acpi_thermal *tz = seq->private; |
68ccfaa8 | 1020 | struct acpi_device *device; |
e7c746ef TR |
1021 | acpi_status status; |
1022 | ||
4be44fcd LB |
1023 | int i = 0; |
1024 | int j = 0; | |
1da177e4 | 1025 | |
1da177e4 LT |
1026 | |
1027 | if (!tz) | |
1028 | goto end; | |
1029 | ||
1030 | if (tz->trips.critical.flags.valid) | |
f5487145 LB |
1031 | seq_printf(seq, "critical (S5): %ld C%s", |
1032 | KELVIN_TO_CELSIUS(tz->trips.critical.temperature), | |
1033 | nocrt ? " <disabled>\n" : "\n"); | |
1da177e4 LT |
1034 | |
1035 | if (tz->trips.hot.flags.valid) | |
f5487145 LB |
1036 | seq_printf(seq, "hot (S4): %ld C%s", |
1037 | KELVIN_TO_CELSIUS(tz->trips.hot.temperature), | |
1038 | nocrt ? " <disabled>\n" : "\n"); | |
1da177e4 LT |
1039 | |
1040 | if (tz->trips.passive.flags.valid) { | |
4be44fcd LB |
1041 | seq_printf(seq, |
1042 | "passive: %ld C: tc1=%lu tc2=%lu tsp=%lu devices=", | |
1043 | KELVIN_TO_CELSIUS(tz->trips.passive.temperature), | |
1044 | tz->trips.passive.tc1, tz->trips.passive.tc2, | |
1045 | tz->trips.passive.tsp); | |
1046 | for (j = 0; j < tz->trips.passive.devices.count; j++) { | |
e7c746ef TR |
1047 | status = acpi_bus_get_device(tz->trips.passive.devices. |
1048 | handles[j], &device); | |
1049 | seq_printf(seq, "%4.4s ", status ? "" : | |
1050 | acpi_device_bid(device)); | |
1da177e4 LT |
1051 | } |
1052 | seq_puts(seq, "\n"); | |
1053 | } | |
1054 | ||
1055 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { | |
1056 | if (!(tz->trips.active[i].flags.valid)) | |
1057 | break; | |
1058 | seq_printf(seq, "active[%d]: %ld C: devices=", | |
4be44fcd LB |
1059 | i, |
1060 | KELVIN_TO_CELSIUS(tz->trips.active[i].temperature)); | |
68ccfaa8 | 1061 | for (j = 0; j < tz->trips.active[i].devices.count; j++){ |
e7c746ef TR |
1062 | status = acpi_bus_get_device(tz->trips.active[i]. |
1063 | devices.handles[j], | |
1064 | &device); | |
1065 | seq_printf(seq, "%4.4s ", status ? "" : | |
1066 | acpi_device_bid(device)); | |
68ccfaa8 | 1067 | } |
1da177e4 LT |
1068 | seq_puts(seq, "\n"); |
1069 | } | |
1070 | ||
4be44fcd | 1071 | end: |
d550d98d | 1072 | return 0; |
1da177e4 LT |
1073 | } |
1074 | ||
1075 | static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file) | |
1076 | { | |
1077 | return single_open(file, acpi_thermal_trip_seq_show, PDE(inode)->data); | |
1078 | } | |
1079 | ||
1da177e4 LT |
1080 | static int acpi_thermal_cooling_seq_show(struct seq_file *seq, void *offset) |
1081 | { | |
50dd0969 | 1082 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 1083 | |
1da177e4 LT |
1084 | |
1085 | if (!tz) | |
1086 | goto end; | |
1087 | ||
eaca2d3f | 1088 | if (!tz->flags.cooling_mode) |
1da177e4 | 1089 | seq_puts(seq, "<setting not supported>\n"); |
1da177e4 | 1090 | else |
eaca2d3f | 1091 | seq_puts(seq, "0 - Active; 1 - Passive\n"); |
1da177e4 | 1092 | |
4be44fcd | 1093 | end: |
d550d98d | 1094 | return 0; |
1da177e4 LT |
1095 | } |
1096 | ||
1097 | static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file) | |
1098 | { | |
1099 | return single_open(file, acpi_thermal_cooling_seq_show, | |
4be44fcd | 1100 | PDE(inode)->data); |
1da177e4 LT |
1101 | } |
1102 | ||
1103 | static ssize_t | |
4be44fcd LB |
1104 | acpi_thermal_write_cooling_mode(struct file *file, |
1105 | const char __user * buffer, | |
1106 | size_t count, loff_t * ppos) | |
1da177e4 | 1107 | { |
50dd0969 JE |
1108 | struct seq_file *m = file->private_data; |
1109 | struct acpi_thermal *tz = m->private; | |
4be44fcd LB |
1110 | int result = 0; |
1111 | char mode_string[12] = { '\0' }; | |
1da177e4 | 1112 | |
1da177e4 LT |
1113 | |
1114 | if (!tz || (count > sizeof(mode_string) - 1)) | |
d550d98d | 1115 | return -EINVAL; |
1da177e4 LT |
1116 | |
1117 | if (!tz->flags.cooling_mode) | |
d550d98d | 1118 | return -ENODEV; |
1da177e4 LT |
1119 | |
1120 | if (copy_from_user(mode_string, buffer, count)) | |
d550d98d | 1121 | return -EFAULT; |
4be44fcd | 1122 | |
1da177e4 | 1123 | mode_string[count] = '\0'; |
4be44fcd LB |
1124 | |
1125 | result = acpi_thermal_set_cooling_mode(tz, | |
1126 | simple_strtoul(mode_string, NULL, | |
1127 | 0)); | |
1da177e4 | 1128 | if (result) |
d550d98d | 1129 | return result; |
1da177e4 LT |
1130 | |
1131 | acpi_thermal_check(tz); | |
1132 | ||
d550d98d | 1133 | return count; |
1da177e4 LT |
1134 | } |
1135 | ||
1da177e4 LT |
1136 | static int acpi_thermal_polling_seq_show(struct seq_file *seq, void *offset) |
1137 | { | |
50dd0969 | 1138 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 1139 | |
1da177e4 LT |
1140 | |
1141 | if (!tz) | |
1142 | goto end; | |
1143 | ||
b1569e99 | 1144 | if (!tz->thermal_zone->polling_delay) { |
1da177e4 LT |
1145 | seq_puts(seq, "<polling disabled>\n"); |
1146 | goto end; | |
1147 | } | |
1148 | ||
b1569e99 MG |
1149 | seq_printf(seq, "polling frequency: %d seconds\n", |
1150 | (tz->thermal_zone->polling_delay / 1000)); | |
1da177e4 | 1151 | |
4be44fcd | 1152 | end: |
d550d98d | 1153 | return 0; |
1da177e4 LT |
1154 | } |
1155 | ||
1156 | static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file) | |
1157 | { | |
1158 | return single_open(file, acpi_thermal_polling_seq_show, | |
4be44fcd | 1159 | PDE(inode)->data); |
1da177e4 LT |
1160 | } |
1161 | ||
1162 | static ssize_t | |
4be44fcd LB |
1163 | acpi_thermal_write_polling(struct file *file, |
1164 | const char __user * buffer, | |
1165 | size_t count, loff_t * ppos) | |
1da177e4 | 1166 | { |
50dd0969 JE |
1167 | struct seq_file *m = file->private_data; |
1168 | struct acpi_thermal *tz = m->private; | |
4be44fcd LB |
1169 | int result = 0; |
1170 | char polling_string[12] = { '\0' }; | |
1171 | int seconds = 0; | |
1da177e4 | 1172 | |
1da177e4 LT |
1173 | |
1174 | if (!tz || (count > sizeof(polling_string) - 1)) | |
d550d98d | 1175 | return -EINVAL; |
4be44fcd | 1176 | |
1da177e4 | 1177 | if (copy_from_user(polling_string, buffer, count)) |
d550d98d | 1178 | return -EFAULT; |
4be44fcd | 1179 | |
1da177e4 LT |
1180 | polling_string[count] = '\0'; |
1181 | ||
1182 | seconds = simple_strtoul(polling_string, NULL, 0); | |
4be44fcd | 1183 | |
1da177e4 LT |
1184 | result = acpi_thermal_set_polling(tz, seconds); |
1185 | if (result) | |
d550d98d | 1186 | return result; |
1da177e4 LT |
1187 | |
1188 | acpi_thermal_check(tz); | |
1189 | ||
d550d98d | 1190 | return count; |
1da177e4 LT |
1191 | } |
1192 | ||
4be44fcd | 1193 | static int acpi_thermal_add_fs(struct acpi_device *device) |
1da177e4 | 1194 | { |
4be44fcd | 1195 | struct proc_dir_entry *entry = NULL; |
1da177e4 | 1196 | |
1da177e4 LT |
1197 | |
1198 | if (!acpi_device_dir(device)) { | |
1199 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1200 | acpi_thermal_dir); |
1da177e4 | 1201 | if (!acpi_device_dir(device)) |
d550d98d | 1202 | return -ENODEV; |
1da177e4 LT |
1203 | } |
1204 | ||
1205 | /* 'state' [R] */ | |
cf7acfab DL |
1206 | entry = proc_create_data(ACPI_THERMAL_FILE_STATE, |
1207 | S_IRUGO, acpi_device_dir(device), | |
1208 | &acpi_thermal_state_fops, | |
1209 | acpi_driver_data(device)); | |
1da177e4 | 1210 | if (!entry) |
d550d98d | 1211 | return -ENODEV; |
1da177e4 LT |
1212 | |
1213 | /* 'temperature' [R] */ | |
cf7acfab DL |
1214 | entry = proc_create_data(ACPI_THERMAL_FILE_TEMPERATURE, |
1215 | S_IRUGO, acpi_device_dir(device), | |
1216 | &acpi_thermal_temp_fops, | |
1217 | acpi_driver_data(device)); | |
1da177e4 | 1218 | if (!entry) |
d550d98d | 1219 | return -ENODEV; |
1da177e4 | 1220 | |
2db9ccba | 1221 | /* 'trip_points' [R] */ |
cf7acfab DL |
1222 | entry = proc_create_data(ACPI_THERMAL_FILE_TRIP_POINTS, |
1223 | S_IRUGO, | |
1224 | acpi_device_dir(device), | |
1225 | &acpi_thermal_trip_fops, | |
1226 | acpi_driver_data(device)); | |
1da177e4 | 1227 | if (!entry) |
d550d98d | 1228 | return -ENODEV; |
1da177e4 LT |
1229 | |
1230 | /* 'cooling_mode' [R/W] */ | |
cf7acfab DL |
1231 | entry = proc_create_data(ACPI_THERMAL_FILE_COOLING_MODE, |
1232 | S_IFREG | S_IRUGO | S_IWUSR, | |
1233 | acpi_device_dir(device), | |
1234 | &acpi_thermal_cooling_fops, | |
1235 | acpi_driver_data(device)); | |
1da177e4 | 1236 | if (!entry) |
d550d98d | 1237 | return -ENODEV; |
1da177e4 LT |
1238 | |
1239 | /* 'polling_frequency' [R/W] */ | |
cf7acfab DL |
1240 | entry = proc_create_data(ACPI_THERMAL_FILE_POLLING_FREQ, |
1241 | S_IFREG | S_IRUGO | S_IWUSR, | |
1242 | acpi_device_dir(device), | |
1243 | &acpi_thermal_polling_fops, | |
1244 | acpi_driver_data(device)); | |
1da177e4 | 1245 | if (!entry) |
d550d98d | 1246 | return -ENODEV; |
d550d98d | 1247 | return 0; |
1da177e4 LT |
1248 | } |
1249 | ||
4be44fcd | 1250 | static int acpi_thermal_remove_fs(struct acpi_device *device) |
1da177e4 | 1251 | { |
1da177e4 LT |
1252 | |
1253 | if (acpi_device_dir(device)) { | |
1254 | remove_proc_entry(ACPI_THERMAL_FILE_POLLING_FREQ, | |
1255 | acpi_device_dir(device)); | |
1256 | remove_proc_entry(ACPI_THERMAL_FILE_COOLING_MODE, | |
1257 | acpi_device_dir(device)); | |
1258 | remove_proc_entry(ACPI_THERMAL_FILE_TRIP_POINTS, | |
1259 | acpi_device_dir(device)); | |
1260 | remove_proc_entry(ACPI_THERMAL_FILE_TEMPERATURE, | |
1261 | acpi_device_dir(device)); | |
1262 | remove_proc_entry(ACPI_THERMAL_FILE_STATE, | |
1263 | acpi_device_dir(device)); | |
1264 | remove_proc_entry(acpi_device_bid(device), acpi_thermal_dir); | |
1265 | acpi_device_dir(device) = NULL; | |
1266 | } | |
1267 | ||
d550d98d | 1268 | return 0; |
1da177e4 LT |
1269 | } |
1270 | ||
1da177e4 LT |
1271 | /* -------------------------------------------------------------------------- |
1272 | Driver Interface | |
1273 | -------------------------------------------------------------------------- */ | |
1274 | ||
342d550d | 1275 | static void acpi_thermal_notify(struct acpi_device *device, u32 event) |
1da177e4 | 1276 | { |
342d550d | 1277 | struct acpi_thermal *tz = acpi_driver_data(device); |
1da177e4 | 1278 | |
1da177e4 LT |
1279 | |
1280 | if (!tz) | |
d550d98d | 1281 | return; |
1da177e4 | 1282 | |
1da177e4 LT |
1283 | switch (event) { |
1284 | case ACPI_THERMAL_NOTIFY_TEMPERATURE: | |
1285 | acpi_thermal_check(tz); | |
1286 | break; | |
1287 | case ACPI_THERMAL_NOTIFY_THRESHOLDS: | |
ce44e197 | 1288 | acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_THRESHOLDS); |
1da177e4 | 1289 | acpi_thermal_check(tz); |
14e04fb3 | 1290 | acpi_bus_generate_proc_event(device, event, 0); |
962ce8ca | 1291 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
0794469d | 1292 | dev_name(&device->dev), event, 0); |
1da177e4 LT |
1293 | break; |
1294 | case ACPI_THERMAL_NOTIFY_DEVICES: | |
ce44e197 ZR |
1295 | acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_DEVICES); |
1296 | acpi_thermal_check(tz); | |
14e04fb3 | 1297 | acpi_bus_generate_proc_event(device, event, 0); |
962ce8ca | 1298 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
0794469d | 1299 | dev_name(&device->dev), event, 0); |
1da177e4 LT |
1300 | break; |
1301 | default: | |
1302 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1303 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1304 | break; |
1305 | } | |
1da177e4 LT |
1306 | } |
1307 | ||
4be44fcd | 1308 | static int acpi_thermal_get_info(struct acpi_thermal *tz) |
1da177e4 | 1309 | { |
4be44fcd | 1310 | int result = 0; |
1da177e4 | 1311 | |
1da177e4 LT |
1312 | |
1313 | if (!tz) | |
d550d98d | 1314 | return -EINVAL; |
1da177e4 LT |
1315 | |
1316 | /* Get temperature [_TMP] (required) */ | |
1317 | result = acpi_thermal_get_temperature(tz); | |
1318 | if (result) | |
d550d98d | 1319 | return result; |
1da177e4 LT |
1320 | |
1321 | /* Get trip points [_CRT, _PSV, etc.] (required) */ | |
1322 | result = acpi_thermal_get_trip_points(tz); | |
1323 | if (result) | |
d550d98d | 1324 | return result; |
1da177e4 LT |
1325 | |
1326 | /* Set the cooling mode [_SCP] to active cooling (default) */ | |
1327 | result = acpi_thermal_set_cooling_mode(tz, ACPI_THERMAL_MODE_ACTIVE); | |
4be44fcd | 1328 | if (!result) |
1da177e4 | 1329 | tz->flags.cooling_mode = 1; |
1da177e4 LT |
1330 | |
1331 | /* Get default polling frequency [_TZP] (optional) */ | |
1332 | if (tzp) | |
1333 | tz->polling_frequency = tzp; | |
1334 | else | |
1335 | acpi_thermal_get_polling_frequency(tz); | |
1336 | ||
d550d98d | 1337 | return 0; |
1da177e4 LT |
1338 | } |
1339 | ||
13614e37 JD |
1340 | /* |
1341 | * The exact offset between Kelvin and degree Celsius is 273.15. However ACPI | |
1342 | * handles temperature values with a single decimal place. As a consequence, | |
1343 | * some implementations use an offset of 273.1 and others use an offset of | |
1344 | * 273.2. Try to find out which one is being used, to present the most | |
1345 | * accurate and visually appealing number. | |
1346 | * | |
1347 | * The heuristic below should work for all ACPI thermal zones which have a | |
1348 | * critical trip point with a value being a multiple of 0.5 degree Celsius. | |
1349 | */ | |
1350 | static void acpi_thermal_guess_offset(struct acpi_thermal *tz) | |
1351 | { | |
1352 | if (tz->trips.critical.flags.valid && | |
1353 | (tz->trips.critical.temperature % 5) == 1) | |
1354 | tz->kelvin_offset = 2731; | |
1355 | else | |
1356 | tz->kelvin_offset = 2732; | |
1357 | } | |
1358 | ||
4be44fcd | 1359 | static int acpi_thermal_add(struct acpi_device *device) |
1da177e4 | 1360 | { |
4be44fcd | 1361 | int result = 0; |
4be44fcd | 1362 | struct acpi_thermal *tz = NULL; |
1da177e4 | 1363 | |
1da177e4 LT |
1364 | |
1365 | if (!device) | |
d550d98d | 1366 | return -EINVAL; |
1da177e4 | 1367 | |
36bcbec7 | 1368 | tz = kzalloc(sizeof(struct acpi_thermal), GFP_KERNEL); |
1da177e4 | 1369 | if (!tz) |
d550d98d | 1370 | return -ENOMEM; |
1da177e4 | 1371 | |
8348e1b1 | 1372 | tz->device = device; |
1da177e4 LT |
1373 | strcpy(tz->name, device->pnp.bus_id); |
1374 | strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME); | |
1375 | strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS); | |
db89b4f0 | 1376 | device->driver_data = tz; |
6e215785 | 1377 | mutex_init(&tz->lock); |
3f655ef8 ZR |
1378 | |
1379 | ||
1da177e4 LT |
1380 | result = acpi_thermal_get_info(tz); |
1381 | if (result) | |
3f655ef8 ZR |
1382 | goto free_memory; |
1383 | ||
13614e37 JD |
1384 | acpi_thermal_guess_offset(tz); |
1385 | ||
3f655ef8 ZR |
1386 | result = acpi_thermal_register_thermal_zone(tz); |
1387 | if (result) | |
1388 | goto free_memory; | |
1da177e4 LT |
1389 | |
1390 | result = acpi_thermal_add_fs(device); | |
1391 | if (result) | |
3f655ef8 | 1392 | goto unregister_thermal_zone; |
1da177e4 | 1393 | |
1da177e4 | 1394 | printk(KERN_INFO PREFIX "%s [%s] (%ld C)\n", |
4be44fcd LB |
1395 | acpi_device_name(device), acpi_device_bid(device), |
1396 | KELVIN_TO_CELSIUS(tz->temperature)); | |
3f655ef8 | 1397 | goto end; |
1da177e4 | 1398 | |
3f655ef8 ZR |
1399 | unregister_thermal_zone: |
1400 | thermal_zone_device_unregister(tz->thermal_zone); | |
1401 | free_memory: | |
1402 | kfree(tz); | |
1403 | end: | |
d550d98d | 1404 | return result; |
1da177e4 LT |
1405 | } |
1406 | ||
4be44fcd | 1407 | static int acpi_thermal_remove(struct acpi_device *device, int type) |
1da177e4 | 1408 | { |
4be44fcd | 1409 | struct acpi_thermal *tz = NULL; |
1da177e4 | 1410 | |
1da177e4 | 1411 | if (!device || !acpi_driver_data(device)) |
d550d98d | 1412 | return -EINVAL; |
1da177e4 | 1413 | |
50dd0969 | 1414 | tz = acpi_driver_data(device); |
1da177e4 | 1415 | |
1da177e4 | 1416 | acpi_thermal_remove_fs(device); |
3f655ef8 | 1417 | acpi_thermal_unregister_thermal_zone(tz); |
6e215785 | 1418 | mutex_destroy(&tz->lock); |
1da177e4 | 1419 | kfree(tz); |
d550d98d | 1420 | return 0; |
1da177e4 LT |
1421 | } |
1422 | ||
5d9464a4 | 1423 | static int acpi_thermal_resume(struct acpi_device *device) |
74ce1468 KK |
1424 | { |
1425 | struct acpi_thermal *tz = NULL; | |
b1028c54 KK |
1426 | int i, j, power_state, result; |
1427 | ||
74ce1468 KK |
1428 | |
1429 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 1430 | return -EINVAL; |
74ce1468 | 1431 | |
50dd0969 | 1432 | tz = acpi_driver_data(device); |
74ce1468 | 1433 | |
bed936f7 | 1434 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { |
b1028c54 KK |
1435 | if (!(&tz->trips.active[i])) |
1436 | break; | |
1437 | if (!tz->trips.active[i].flags.valid) | |
1438 | break; | |
1439 | tz->trips.active[i].flags.enabled = 1; | |
1440 | for (j = 0; j < tz->trips.active[i].devices.count; j++) { | |
1441 | result = acpi_bus_get_power(tz->trips.active[i].devices. | |
1442 | handles[j], &power_state); | |
1443 | if (result || (power_state != ACPI_STATE_D0)) { | |
1444 | tz->trips.active[i].flags.enabled = 0; | |
1445 | break; | |
1446 | } | |
bed936f7 | 1447 | } |
b1028c54 | 1448 | tz->state.active |= tz->trips.active[i].flags.enabled; |
bed936f7 KK |
1449 | } |
1450 | ||
b1028c54 | 1451 | acpi_thermal_check(tz); |
74ce1468 KK |
1452 | |
1453 | return AE_OK; | |
1454 | } | |
1455 | ||
1855256c | 1456 | static int thermal_act(const struct dmi_system_id *d) { |
0b5bfa1c LB |
1457 | |
1458 | if (act == 0) { | |
1459 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1460 | "disabling all active thermal trip points\n", d->ident); | |
1461 | act = -1; | |
1462 | } | |
1463 | return 0; | |
1464 | } | |
1855256c | 1465 | static int thermal_nocrt(const struct dmi_system_id *d) { |
8c99fdce LB |
1466 | |
1467 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1468 | "disabling all critical thermal trip point actions.\n", d->ident); | |
1469 | nocrt = 1; | |
1470 | return 0; | |
1471 | } | |
1855256c | 1472 | static int thermal_tzp(const struct dmi_system_id *d) { |
0b5bfa1c LB |
1473 | |
1474 | if (tzp == 0) { | |
1475 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1476 | "enabling thermal zone polling\n", d->ident); | |
1477 | tzp = 300; /* 300 dS = 30 Seconds */ | |
1478 | } | |
1479 | return 0; | |
1480 | } | |
1855256c | 1481 | static int thermal_psv(const struct dmi_system_id *d) { |
0b5bfa1c LB |
1482 | |
1483 | if (psv == 0) { | |
1484 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1485 | "disabling all passive thermal trip points\n", d->ident); | |
1486 | psv = -1; | |
1487 | } | |
1488 | return 0; | |
1489 | } | |
1490 | ||
1491 | static struct dmi_system_id thermal_dmi_table[] __initdata = { | |
1492 | /* | |
1493 | * Award BIOS on this AOpen makes thermal control almost worthless. | |
1494 | * http://bugzilla.kernel.org/show_bug.cgi?id=8842 | |
1495 | */ | |
1496 | { | |
1497 | .callback = thermal_act, | |
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_psv, | |
1506 | .ident = "AOpen i915GMm-HFS", | |
1507 | .matches = { | |
1508 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
1509 | DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), | |
1510 | }, | |
1511 | }, | |
1512 | { | |
1513 | .callback = thermal_tzp, | |
1514 | .ident = "AOpen i915GMm-HFS", | |
1515 | .matches = { | |
1516 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
1517 | DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), | |
1518 | }, | |
1519 | }, | |
8c99fdce LB |
1520 | { |
1521 | .callback = thermal_nocrt, | |
1522 | .ident = "Gigabyte GA-7ZX", | |
1523 | .matches = { | |
1524 | DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co., Ltd."), | |
1525 | DMI_MATCH(DMI_BOARD_NAME, "7ZX"), | |
1526 | }, | |
1527 | }, | |
0b5bfa1c LB |
1528 | {} |
1529 | }; | |
0b5bfa1c | 1530 | |
4be44fcd | 1531 | static int __init acpi_thermal_init(void) |
1da177e4 | 1532 | { |
4be44fcd | 1533 | int result = 0; |
1da177e4 | 1534 | |
0b5bfa1c LB |
1535 | dmi_check_system(thermal_dmi_table); |
1536 | ||
72b33ef8 LB |
1537 | if (off) { |
1538 | printk(KERN_NOTICE "ACPI: thermal control disabled\n"); | |
1539 | return -ENODEV; | |
1540 | } | |
1da177e4 LT |
1541 | acpi_thermal_dir = proc_mkdir(ACPI_THERMAL_CLASS, acpi_root_dir); |
1542 | if (!acpi_thermal_dir) | |
d550d98d | 1543 | return -ENODEV; |
1da177e4 LT |
1544 | |
1545 | result = acpi_bus_register_driver(&acpi_thermal_driver); | |
1546 | if (result < 0) { | |
1547 | remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir); | |
d550d98d | 1548 | return -ENODEV; |
1da177e4 LT |
1549 | } |
1550 | ||
d550d98d | 1551 | return 0; |
1da177e4 LT |
1552 | } |
1553 | ||
4be44fcd | 1554 | static void __exit acpi_thermal_exit(void) |
1da177e4 | 1555 | { |
1da177e4 LT |
1556 | |
1557 | acpi_bus_unregister_driver(&acpi_thermal_driver); | |
1558 | ||
1559 | remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir); | |
1560 | ||
d550d98d | 1561 | return; |
1da177e4 LT |
1562 | } |
1563 | ||
1da177e4 LT |
1564 | module_init(acpi_thermal_init); |
1565 | module_exit(acpi_thermal_exit); |