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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 | ||
a192a958 LB |
50 | #define PREFIX "ACPI: " |
51 | ||
1da177e4 | 52 | #define ACPI_THERMAL_CLASS "thermal_zone" |
1da177e4 LT |
53 | #define ACPI_THERMAL_DEVICE_NAME "Thermal Zone" |
54 | #define ACPI_THERMAL_FILE_STATE "state" | |
55 | #define ACPI_THERMAL_FILE_TEMPERATURE "temperature" | |
56 | #define ACPI_THERMAL_FILE_TRIP_POINTS "trip_points" | |
57 | #define ACPI_THERMAL_FILE_COOLING_MODE "cooling_mode" | |
58 | #define ACPI_THERMAL_FILE_POLLING_FREQ "polling_frequency" | |
59 | #define ACPI_THERMAL_NOTIFY_TEMPERATURE 0x80 | |
60 | #define ACPI_THERMAL_NOTIFY_THRESHOLDS 0x81 | |
61 | #define ACPI_THERMAL_NOTIFY_DEVICES 0x82 | |
62 | #define ACPI_THERMAL_NOTIFY_CRITICAL 0xF0 | |
63 | #define ACPI_THERMAL_NOTIFY_HOT 0xF1 | |
64 | #define ACPI_THERMAL_MODE_ACTIVE 0x00 | |
1da177e4 LT |
65 | |
66 | #define ACPI_THERMAL_MAX_ACTIVE 10 | |
67 | #define ACPI_THERMAL_MAX_LIMIT_STR_LEN 65 | |
68 | ||
1da177e4 | 69 | #define _COMPONENT ACPI_THERMAL_COMPONENT |
f52fd66d | 70 | ACPI_MODULE_NAME("thermal"); |
1da177e4 | 71 | |
1cbf4c56 | 72 | MODULE_AUTHOR("Paul Diefenbaugh"); |
7cda93e0 | 73 | MODULE_DESCRIPTION("ACPI Thermal Zone Driver"); |
1da177e4 LT |
74 | MODULE_LICENSE("GPL"); |
75 | ||
f8707ec9 LB |
76 | static int act; |
77 | module_param(act, int, 0644); | |
3c1d36da | 78 | MODULE_PARM_DESC(act, "Disable or override all lowest active trip points."); |
f8707ec9 | 79 | |
c52a7419 LB |
80 | static int crt; |
81 | module_param(crt, int, 0644); | |
82 | MODULE_PARM_DESC(crt, "Disable or lower all critical trip points."); | |
83 | ||
1da177e4 | 84 | static int tzp; |
730ff34d | 85 | module_param(tzp, int, 0444); |
3c1d36da | 86 | MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds."); |
1da177e4 | 87 | |
f5487145 LB |
88 | static int nocrt; |
89 | module_param(nocrt, int, 0); | |
8c99fdce | 90 | MODULE_PARM_DESC(nocrt, "Set to take no action upon ACPI thermal zone critical trips points."); |
f5487145 | 91 | |
72b33ef8 LB |
92 | static int off; |
93 | module_param(off, int, 0); | |
3c1d36da | 94 | MODULE_PARM_DESC(off, "Set to disable ACPI thermal support."); |
72b33ef8 | 95 | |
a70cdc52 LB |
96 | static int psv; |
97 | module_param(psv, int, 0644); | |
3c1d36da | 98 | MODULE_PARM_DESC(psv, "Disable or override all passive trip points."); |
a70cdc52 | 99 | |
4be44fcd LB |
100 | static int acpi_thermal_add(struct acpi_device *device); |
101 | static int acpi_thermal_remove(struct acpi_device *device, int type); | |
5d9464a4 | 102 | static int acpi_thermal_resume(struct acpi_device *device); |
342d550d | 103 | static void acpi_thermal_notify(struct acpi_device *device, u32 event); |
1da177e4 LT |
104 | static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file); |
105 | static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file); | |
106 | static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file); | |
1da177e4 | 107 | static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file); |
4be44fcd LB |
108 | static ssize_t acpi_thermal_write_cooling_mode(struct file *, |
109 | const char __user *, size_t, | |
110 | loff_t *); | |
1da177e4 | 111 | static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file); |
4be44fcd LB |
112 | static ssize_t acpi_thermal_write_polling(struct file *, const char __user *, |
113 | size_t, loff_t *); | |
1da177e4 | 114 | |
1ba90e3a TR |
115 | static const struct acpi_device_id thermal_device_ids[] = { |
116 | {ACPI_THERMAL_HID, 0}, | |
117 | {"", 0}, | |
118 | }; | |
119 | MODULE_DEVICE_TABLE(acpi, thermal_device_ids); | |
120 | ||
1da177e4 | 121 | static struct acpi_driver acpi_thermal_driver = { |
c2b6705b | 122 | .name = "thermal", |
4be44fcd | 123 | .class = ACPI_THERMAL_CLASS, |
1ba90e3a | 124 | .ids = thermal_device_ids, |
4be44fcd LB |
125 | .ops = { |
126 | .add = acpi_thermal_add, | |
127 | .remove = acpi_thermal_remove, | |
74ce1468 | 128 | .resume = acpi_thermal_resume, |
342d550d | 129 | .notify = acpi_thermal_notify, |
4be44fcd | 130 | }, |
1da177e4 LT |
131 | }; |
132 | ||
133 | struct acpi_thermal_state { | |
4be44fcd LB |
134 | u8 critical:1; |
135 | u8 hot:1; | |
136 | u8 passive:1; | |
137 | u8 active:1; | |
138 | u8 reserved:4; | |
139 | int active_index; | |
1da177e4 LT |
140 | }; |
141 | ||
142 | struct acpi_thermal_state_flags { | |
4be44fcd LB |
143 | u8 valid:1; |
144 | u8 enabled:1; | |
145 | u8 reserved:6; | |
1da177e4 LT |
146 | }; |
147 | ||
148 | struct acpi_thermal_critical { | |
149 | struct acpi_thermal_state_flags flags; | |
4be44fcd | 150 | unsigned long temperature; |
1da177e4 LT |
151 | }; |
152 | ||
153 | struct acpi_thermal_hot { | |
154 | struct acpi_thermal_state_flags flags; | |
4be44fcd | 155 | unsigned long temperature; |
1da177e4 LT |
156 | }; |
157 | ||
158 | struct acpi_thermal_passive { | |
159 | struct acpi_thermal_state_flags flags; | |
4be44fcd LB |
160 | unsigned long temperature; |
161 | unsigned long tc1; | |
162 | unsigned long tc2; | |
163 | unsigned long tsp; | |
164 | struct acpi_handle_list devices; | |
1da177e4 LT |
165 | }; |
166 | ||
167 | struct acpi_thermal_active { | |
168 | struct acpi_thermal_state_flags flags; | |
4be44fcd LB |
169 | unsigned long temperature; |
170 | struct acpi_handle_list devices; | |
1da177e4 LT |
171 | }; |
172 | ||
173 | struct acpi_thermal_trips { | |
174 | struct acpi_thermal_critical critical; | |
4be44fcd | 175 | struct acpi_thermal_hot hot; |
1da177e4 LT |
176 | struct acpi_thermal_passive passive; |
177 | struct acpi_thermal_active active[ACPI_THERMAL_MAX_ACTIVE]; | |
178 | }; | |
179 | ||
180 | struct acpi_thermal_flags { | |
4be44fcd LB |
181 | u8 cooling_mode:1; /* _SCP */ |
182 | u8 devices:1; /* _TZD */ | |
183 | u8 reserved:6; | |
1da177e4 LT |
184 | }; |
185 | ||
186 | struct acpi_thermal { | |
8348e1b1 | 187 | struct acpi_device * device; |
4be44fcd LB |
188 | acpi_bus_id name; |
189 | unsigned long temperature; | |
190 | unsigned long last_temperature; | |
191 | unsigned long polling_frequency; | |
4be44fcd | 192 | volatile u8 zombie; |
1da177e4 LT |
193 | struct acpi_thermal_flags flags; |
194 | struct acpi_thermal_state state; | |
195 | struct acpi_thermal_trips trips; | |
4be44fcd | 196 | struct acpi_handle_list devices; |
3f655ef8 ZR |
197 | struct thermal_zone_device *thermal_zone; |
198 | int tz_enabled; | |
13614e37 | 199 | int kelvin_offset; |
6e215785 | 200 | struct mutex lock; |
1da177e4 LT |
201 | }; |
202 | ||
d7508032 | 203 | static const struct file_operations acpi_thermal_state_fops = { |
cf7acfab | 204 | .owner = THIS_MODULE, |
4be44fcd LB |
205 | .open = acpi_thermal_state_open_fs, |
206 | .read = seq_read, | |
207 | .llseek = seq_lseek, | |
208 | .release = single_release, | |
1da177e4 LT |
209 | }; |
210 | ||
d7508032 | 211 | static const struct file_operations acpi_thermal_temp_fops = { |
cf7acfab | 212 | .owner = THIS_MODULE, |
4be44fcd LB |
213 | .open = acpi_thermal_temp_open_fs, |
214 | .read = seq_read, | |
215 | .llseek = seq_lseek, | |
216 | .release = single_release, | |
1da177e4 LT |
217 | }; |
218 | ||
d7508032 | 219 | static const struct file_operations acpi_thermal_trip_fops = { |
cf7acfab | 220 | .owner = THIS_MODULE, |
4be44fcd LB |
221 | .open = acpi_thermal_trip_open_fs, |
222 | .read = seq_read, | |
4be44fcd LB |
223 | .llseek = seq_lseek, |
224 | .release = single_release, | |
1da177e4 LT |
225 | }; |
226 | ||
d7508032 | 227 | static const struct file_operations acpi_thermal_cooling_fops = { |
cf7acfab | 228 | .owner = THIS_MODULE, |
4be44fcd LB |
229 | .open = acpi_thermal_cooling_open_fs, |
230 | .read = seq_read, | |
231 | .write = acpi_thermal_write_cooling_mode, | |
232 | .llseek = seq_lseek, | |
233 | .release = single_release, | |
1da177e4 LT |
234 | }; |
235 | ||
d7508032 | 236 | static const struct file_operations acpi_thermal_polling_fops = { |
cf7acfab | 237 | .owner = THIS_MODULE, |
4be44fcd LB |
238 | .open = acpi_thermal_polling_open_fs, |
239 | .read = seq_read, | |
240 | .write = acpi_thermal_write_polling, | |
241 | .llseek = seq_lseek, | |
242 | .release = single_release, | |
1da177e4 LT |
243 | }; |
244 | ||
245 | /* -------------------------------------------------------------------------- | |
246 | Thermal Zone Management | |
247 | -------------------------------------------------------------------------- */ | |
248 | ||
4be44fcd | 249 | static int acpi_thermal_get_temperature(struct acpi_thermal *tz) |
1da177e4 | 250 | { |
4be44fcd | 251 | acpi_status status = AE_OK; |
27663c58 | 252 | unsigned long long tmp; |
1da177e4 LT |
253 | |
254 | if (!tz) | |
d550d98d | 255 | return -EINVAL; |
1da177e4 LT |
256 | |
257 | tz->last_temperature = tz->temperature; | |
258 | ||
27663c58 | 259 | status = acpi_evaluate_integer(tz->device->handle, "_TMP", NULL, &tmp); |
1da177e4 | 260 | if (ACPI_FAILURE(status)) |
d550d98d | 261 | return -ENODEV; |
1da177e4 | 262 | |
27663c58 | 263 | tz->temperature = tmp; |
4be44fcd LB |
264 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Temperature is %lu dK\n", |
265 | tz->temperature)); | |
1da177e4 | 266 | |
d550d98d | 267 | return 0; |
1da177e4 LT |
268 | } |
269 | ||
4be44fcd | 270 | static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz) |
1da177e4 | 271 | { |
4be44fcd | 272 | acpi_status status = AE_OK; |
27663c58 | 273 | unsigned long long tmp; |
1da177e4 LT |
274 | |
275 | if (!tz) | |
d550d98d | 276 | return -EINVAL; |
1da177e4 | 277 | |
27663c58 | 278 | status = acpi_evaluate_integer(tz->device->handle, "_TZP", NULL, &tmp); |
1da177e4 | 279 | if (ACPI_FAILURE(status)) |
d550d98d | 280 | return -ENODEV; |
1da177e4 | 281 | |
27663c58 | 282 | tz->polling_frequency = tmp; |
4be44fcd LB |
283 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Polling frequency is %lu dS\n", |
284 | tz->polling_frequency)); | |
1da177e4 | 285 | |
d550d98d | 286 | return 0; |
1da177e4 LT |
287 | } |
288 | ||
4be44fcd | 289 | static int acpi_thermal_set_polling(struct acpi_thermal *tz, int seconds) |
1da177e4 | 290 | { |
1da177e4 LT |
291 | |
292 | if (!tz) | |
d550d98d | 293 | return -EINVAL; |
1da177e4 LT |
294 | |
295 | tz->polling_frequency = seconds * 10; /* Convert value to deci-seconds */ | |
296 | ||
b1569e99 MG |
297 | tz->thermal_zone->polling_delay = seconds * 1000; |
298 | ||
299 | if (tz->tz_enabled) | |
300 | thermal_zone_device_update(tz->thermal_zone); | |
301 | ||
4be44fcd LB |
302 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
303 | "Polling frequency set to %lu seconds\n", | |
636cedf9 | 304 | tz->polling_frequency/10)); |
1da177e4 | 305 | |
d550d98d | 306 | return 0; |
1da177e4 LT |
307 | } |
308 | ||
4be44fcd | 309 | static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode) |
1da177e4 | 310 | { |
4be44fcd LB |
311 | acpi_status status = AE_OK; |
312 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
313 | struct acpi_object_list arg_list = { 1, &arg0 }; | |
314 | acpi_handle handle = NULL; | |
1da177e4 | 315 | |
1da177e4 LT |
316 | |
317 | if (!tz) | |
d550d98d | 318 | return -EINVAL; |
1da177e4 | 319 | |
38ba7c9e | 320 | status = acpi_get_handle(tz->device->handle, "_SCP", &handle); |
1da177e4 LT |
321 | if (ACPI_FAILURE(status)) { |
322 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n")); | |
d550d98d | 323 | return -ENODEV; |
1da177e4 LT |
324 | } |
325 | ||
326 | arg0.integer.value = mode; | |
327 | ||
328 | status = acpi_evaluate_object(handle, NULL, &arg_list, NULL); | |
329 | if (ACPI_FAILURE(status)) | |
d550d98d | 330 | return -ENODEV; |
1da177e4 | 331 | |
d550d98d | 332 | return 0; |
1da177e4 LT |
333 | } |
334 | ||
ce44e197 ZR |
335 | #define ACPI_TRIPS_CRITICAL 0x01 |
336 | #define ACPI_TRIPS_HOT 0x02 | |
337 | #define ACPI_TRIPS_PASSIVE 0x04 | |
338 | #define ACPI_TRIPS_ACTIVE 0x08 | |
339 | #define ACPI_TRIPS_DEVICES 0x10 | |
1da177e4 | 340 | |
ce44e197 ZR |
341 | #define ACPI_TRIPS_REFRESH_THRESHOLDS (ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE) |
342 | #define ACPI_TRIPS_REFRESH_DEVICES ACPI_TRIPS_DEVICES | |
1da177e4 | 343 | |
ce44e197 ZR |
344 | #define ACPI_TRIPS_INIT (ACPI_TRIPS_CRITICAL | ACPI_TRIPS_HOT | \ |
345 | ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE | \ | |
346 | ACPI_TRIPS_DEVICES) | |
1da177e4 | 347 | |
ce44e197 ZR |
348 | /* |
349 | * This exception is thrown out in two cases: | |
350 | * 1.An invalid trip point becomes invalid or a valid trip point becomes invalid | |
351 | * when re-evaluating the AML code. | |
352 | * 2.TODO: Devices listed in _PSL, _ALx, _TZD may change. | |
353 | * We need to re-bind the cooling devices of a thermal zone when this occurs. | |
354 | */ | |
355 | #define ACPI_THERMAL_TRIPS_EXCEPTION(flags, str) \ | |
356 | do { \ | |
357 | if (flags != ACPI_TRIPS_INIT) \ | |
358 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, \ | |
359 | "ACPI thermal trip point %s changed\n" \ | |
360 | "Please send acpidump to linux-acpi@vger.kernel.org\n", str)); \ | |
361 | } while (0) | |
362 | ||
363 | static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) | |
364 | { | |
365 | acpi_status status = AE_OK; | |
27663c58 | 366 | unsigned long long tmp; |
ce44e197 ZR |
367 | struct acpi_handle_list devices; |
368 | int valid = 0; | |
369 | int i; | |
1da177e4 | 370 | |
ce44e197 ZR |
371 | /* Critical Shutdown (required) */ |
372 | if (flag & ACPI_TRIPS_CRITICAL) { | |
373 | status = acpi_evaluate_integer(tz->device->handle, | |
27663c58 MW |
374 | "_CRT", NULL, &tmp); |
375 | tz->trips.critical.temperature = tmp; | |
a39a2d7c AV |
376 | /* |
377 | * Treat freezing temperatures as invalid as well; some | |
378 | * BIOSes return really low values and cause reboots at startup. | |
b731d7b6 | 379 | * Below zero (Celsius) values clearly aren't right for sure.. |
a39a2d7c AV |
380 | * ... so lets discard those as invalid. |
381 | */ | |
382 | if (ACPI_FAILURE(status) || | |
383 | tz->trips.critical.temperature <= 2732) { | |
c52a7419 | 384 | tz->trips.critical.flags.valid = 0; |
ce44e197 | 385 | ACPI_EXCEPTION((AE_INFO, status, |
a39a2d7c | 386 | "No or invalid critical threshold")); |
ce44e197 ZR |
387 | return -ENODEV; |
388 | } else { | |
389 | tz->trips.critical.flags.valid = 1; | |
390 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
391 | "Found critical threshold [%lu]\n", | |
392 | tz->trips.critical.temperature)); | |
393 | } | |
394 | if (tz->trips.critical.flags.valid == 1) { | |
395 | if (crt == -1) { | |
396 | tz->trips.critical.flags.valid = 0; | |
397 | } else if (crt > 0) { | |
398 | unsigned long crt_k = CELSIUS_TO_KELVIN(crt); | |
399 | /* | |
22a94d79 | 400 | * Allow override critical threshold |
ce44e197 | 401 | */ |
22a94d79 ZR |
402 | if (crt_k > tz->trips.critical.temperature) |
403 | printk(KERN_WARNING PREFIX | |
404 | "Critical threshold %d C\n", crt); | |
405 | tz->trips.critical.temperature = crt_k; | |
ce44e197 | 406 | } |
c52a7419 LB |
407 | } |
408 | } | |
409 | ||
1da177e4 | 410 | /* Critical Sleep (optional) */ |
ce44e197 | 411 | if (flag & ACPI_TRIPS_HOT) { |
a70cdc52 | 412 | status = acpi_evaluate_integer(tz->device->handle, |
27663c58 | 413 | "_HOT", NULL, &tmp); |
ce44e197 ZR |
414 | if (ACPI_FAILURE(status)) { |
415 | tz->trips.hot.flags.valid = 0; | |
416 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
417 | "No hot threshold\n")); | |
418 | } else { | |
27663c58 | 419 | tz->trips.hot.temperature = tmp; |
ce44e197 ZR |
420 | tz->trips.hot.flags.valid = 1; |
421 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
422 | "Found hot threshold [%lu]\n", | |
423 | tz->trips.critical.temperature)); | |
424 | } | |
a70cdc52 LB |
425 | } |
426 | ||
ce44e197 | 427 | /* Passive (optional) */ |
0e4240d9 ZR |
428 | if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips.passive.flags.valid) || |
429 | (flag == ACPI_TRIPS_INIT)) { | |
ce44e197 ZR |
430 | valid = tz->trips.passive.flags.valid; |
431 | if (psv == -1) { | |
432 | status = AE_SUPPORT; | |
433 | } else if (psv > 0) { | |
27663c58 | 434 | tmp = CELSIUS_TO_KELVIN(psv); |
ce44e197 ZR |
435 | status = AE_OK; |
436 | } else { | |
437 | status = acpi_evaluate_integer(tz->device->handle, | |
27663c58 | 438 | "_PSV", NULL, &tmp); |
ce44e197 | 439 | } |
1da177e4 | 440 | |
1da177e4 LT |
441 | if (ACPI_FAILURE(status)) |
442 | tz->trips.passive.flags.valid = 0; | |
ce44e197 | 443 | else { |
27663c58 | 444 | tz->trips.passive.temperature = tmp; |
ce44e197 ZR |
445 | tz->trips.passive.flags.valid = 1; |
446 | if (flag == ACPI_TRIPS_INIT) { | |
447 | status = acpi_evaluate_integer( | |
448 | tz->device->handle, "_TC1", | |
27663c58 | 449 | NULL, &tmp); |
ce44e197 ZR |
450 | if (ACPI_FAILURE(status)) |
451 | tz->trips.passive.flags.valid = 0; | |
27663c58 MW |
452 | else |
453 | tz->trips.passive.tc1 = tmp; | |
ce44e197 ZR |
454 | status = acpi_evaluate_integer( |
455 | tz->device->handle, "_TC2", | |
27663c58 | 456 | NULL, &tmp); |
ce44e197 ZR |
457 | if (ACPI_FAILURE(status)) |
458 | tz->trips.passive.flags.valid = 0; | |
27663c58 MW |
459 | else |
460 | tz->trips.passive.tc2 = tmp; | |
ce44e197 ZR |
461 | status = acpi_evaluate_integer( |
462 | tz->device->handle, "_TSP", | |
27663c58 | 463 | NULL, &tmp); |
ce44e197 ZR |
464 | if (ACPI_FAILURE(status)) |
465 | tz->trips.passive.flags.valid = 0; | |
27663c58 MW |
466 | else |
467 | tz->trips.passive.tsp = tmp; | |
ce44e197 ZR |
468 | } |
469 | } | |
470 | } | |
471 | if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.passive.flags.valid) { | |
472 | memset(&devices, 0, sizeof(struct acpi_handle_list)); | |
473 | status = acpi_evaluate_reference(tz->device->handle, "_PSL", | |
474 | NULL, &devices); | |
0e4240d9 ZR |
475 | if (ACPI_FAILURE(status)) { |
476 | printk(KERN_WARNING PREFIX | |
477 | "Invalid passive threshold\n"); | |
1da177e4 | 478 | tz->trips.passive.flags.valid = 0; |
0e4240d9 | 479 | } |
1da177e4 | 480 | else |
ce44e197 | 481 | tz->trips.passive.flags.valid = 1; |
1da177e4 | 482 | |
ce44e197 ZR |
483 | if (memcmp(&tz->trips.passive.devices, &devices, |
484 | sizeof(struct acpi_handle_list))) { | |
485 | memcpy(&tz->trips.passive.devices, &devices, | |
486 | sizeof(struct acpi_handle_list)); | |
487 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); | |
488 | } | |
489 | } | |
490 | if ((flag & ACPI_TRIPS_PASSIVE) || (flag & ACPI_TRIPS_DEVICES)) { | |
491 | if (valid != tz->trips.passive.flags.valid) | |
492 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "state"); | |
493 | } | |
1da177e4 | 494 | |
ce44e197 | 495 | /* Active (optional) */ |
4be44fcd | 496 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { |
4be44fcd | 497 | char name[5] = { '_', 'A', 'C', ('0' + i), '\0' }; |
ce44e197 | 498 | valid = tz->trips.active[i].flags.valid; |
1da177e4 | 499 | |
f8707ec9 | 500 | if (act == -1) |
ce44e197 ZR |
501 | break; /* disable all active trip points */ |
502 | ||
0e4240d9 ZR |
503 | if ((flag == ACPI_TRIPS_INIT) || ((flag & ACPI_TRIPS_ACTIVE) && |
504 | tz->trips.active[i].flags.valid)) { | |
ce44e197 | 505 | status = acpi_evaluate_integer(tz->device->handle, |
27663c58 | 506 | name, NULL, &tmp); |
ce44e197 ZR |
507 | if (ACPI_FAILURE(status)) { |
508 | tz->trips.active[i].flags.valid = 0; | |
509 | if (i == 0) | |
510 | break; | |
511 | if (act <= 0) | |
512 | break; | |
513 | if (i == 1) | |
514 | tz->trips.active[0].temperature = | |
515 | CELSIUS_TO_KELVIN(act); | |
516 | else | |
517 | /* | |
518 | * Don't allow override higher than | |
519 | * the next higher trip point | |
520 | */ | |
521 | tz->trips.active[i - 1].temperature = | |
522 | (tz->trips.active[i - 2].temperature < | |
523 | CELSIUS_TO_KELVIN(act) ? | |
524 | tz->trips.active[i - 2].temperature : | |
525 | CELSIUS_TO_KELVIN(act)); | |
f8707ec9 | 526 | break; |
27663c58 MW |
527 | } else { |
528 | tz->trips.active[i].temperature = tmp; | |
ce44e197 | 529 | tz->trips.active[i].flags.valid = 1; |
27663c58 | 530 | } |
f8707ec9 | 531 | } |
1da177e4 LT |
532 | |
533 | name[2] = 'L'; | |
ce44e197 ZR |
534 | if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.active[i].flags.valid ) { |
535 | memset(&devices, 0, sizeof(struct acpi_handle_list)); | |
536 | status = acpi_evaluate_reference(tz->device->handle, | |
537 | name, NULL, &devices); | |
0e4240d9 ZR |
538 | if (ACPI_FAILURE(status)) { |
539 | printk(KERN_WARNING PREFIX | |
540 | "Invalid active%d threshold\n", i); | |
ce44e197 | 541 | tz->trips.active[i].flags.valid = 0; |
0e4240d9 | 542 | } |
ce44e197 ZR |
543 | else |
544 | tz->trips.active[i].flags.valid = 1; | |
545 | ||
546 | if (memcmp(&tz->trips.active[i].devices, &devices, | |
547 | sizeof(struct acpi_handle_list))) { | |
548 | memcpy(&tz->trips.active[i].devices, &devices, | |
549 | sizeof(struct acpi_handle_list)); | |
550 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); | |
551 | } | |
552 | } | |
553 | if ((flag & ACPI_TRIPS_ACTIVE) || (flag & ACPI_TRIPS_DEVICES)) | |
554 | if (valid != tz->trips.active[i].flags.valid) | |
555 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "state"); | |
556 | ||
557 | if (!tz->trips.active[i].flags.valid) | |
558 | break; | |
559 | } | |
560 | ||
561 | if (flag & ACPI_TRIPS_DEVICES) { | |
562 | memset(&devices, 0, sizeof(struct acpi_handle_list)); | |
563 | status = acpi_evaluate_reference(tz->device->handle, "_TZD", | |
564 | NULL, &devices); | |
565 | if (memcmp(&tz->devices, &devices, | |
566 | sizeof(struct acpi_handle_list))) { | |
567 | memcpy(&tz->devices, &devices, | |
568 | sizeof(struct acpi_handle_list)); | |
569 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); | |
570 | } | |
1da177e4 LT |
571 | } |
572 | ||
d550d98d | 573 | return 0; |
1da177e4 LT |
574 | } |
575 | ||
ce44e197 | 576 | static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) |
1da177e4 | 577 | { |
8b7ef6d8 TR |
578 | int i, valid, ret = acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT); |
579 | ||
580 | if (ret) | |
581 | return ret; | |
582 | ||
583 | valid = tz->trips.critical.flags.valid | | |
584 | tz->trips.hot.flags.valid | | |
585 | tz->trips.passive.flags.valid; | |
586 | ||
587 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) | |
588 | valid |= tz->trips.active[i].flags.valid; | |
589 | ||
590 | if (!valid) { | |
591 | printk(KERN_WARNING FW_BUG "No valid trip found\n"); | |
592 | return -ENODEV; | |
593 | } | |
594 | return 0; | |
1da177e4 LT |
595 | } |
596 | ||
4be44fcd | 597 | static void acpi_thermal_check(void *data) |
1da177e4 | 598 | { |
50dd0969 | 599 | struct acpi_thermal *tz = data; |
1da177e4 | 600 | |
b1569e99 | 601 | thermal_zone_device_update(tz->thermal_zone); |
1da177e4 LT |
602 | } |
603 | ||
3f655ef8 | 604 | /* sys I/F for generic thermal sysfs support */ |
13614e37 | 605 | #define KELVIN_TO_MILLICELSIUS(t, off) (((t) - (off)) * 100) |
5e012760 | 606 | |
6503e5df MG |
607 | static int thermal_get_temp(struct thermal_zone_device *thermal, |
608 | unsigned long *temp) | |
3f655ef8 ZR |
609 | { |
610 | struct acpi_thermal *tz = thermal->devdata; | |
76ecb4f2 | 611 | int result; |
3f655ef8 ZR |
612 | |
613 | if (!tz) | |
614 | return -EINVAL; | |
615 | ||
76ecb4f2 ZR |
616 | result = acpi_thermal_get_temperature(tz); |
617 | if (result) | |
618 | return result; | |
619 | ||
13614e37 | 620 | *temp = KELVIN_TO_MILLICELSIUS(tz->temperature, tz->kelvin_offset); |
6503e5df | 621 | return 0; |
3f655ef8 ZR |
622 | } |
623 | ||
624 | static const char enabled[] = "kernel"; | |
625 | static const char disabled[] = "user"; | |
626 | static int thermal_get_mode(struct thermal_zone_device *thermal, | |
6503e5df | 627 | enum thermal_device_mode *mode) |
3f655ef8 ZR |
628 | { |
629 | struct acpi_thermal *tz = thermal->devdata; | |
630 | ||
631 | if (!tz) | |
632 | return -EINVAL; | |
633 | ||
6503e5df MG |
634 | *mode = tz->tz_enabled ? THERMAL_DEVICE_ENABLED : |
635 | THERMAL_DEVICE_DISABLED; | |
636 | ||
637 | return 0; | |
3f655ef8 ZR |
638 | } |
639 | ||
640 | static int thermal_set_mode(struct thermal_zone_device *thermal, | |
6503e5df | 641 | enum thermal_device_mode mode) |
3f655ef8 ZR |
642 | { |
643 | struct acpi_thermal *tz = thermal->devdata; | |
644 | int enable; | |
645 | ||
646 | if (!tz) | |
647 | return -EINVAL; | |
648 | ||
649 | /* | |
650 | * enable/disable thermal management from ACPI thermal driver | |
651 | */ | |
6503e5df | 652 | if (mode == THERMAL_DEVICE_ENABLED) |
3f655ef8 | 653 | enable = 1; |
6503e5df | 654 | else if (mode == THERMAL_DEVICE_DISABLED) |
3f655ef8 ZR |
655 | enable = 0; |
656 | else | |
657 | return -EINVAL; | |
658 | ||
659 | if (enable != tz->tz_enabled) { | |
660 | tz->tz_enabled = enable; | |
661 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
662 | "%s ACPI thermal control\n", | |
663 | tz->tz_enabled ? enabled : disabled)); | |
664 | acpi_thermal_check(tz); | |
665 | } | |
666 | return 0; | |
667 | } | |
668 | ||
669 | static int thermal_get_trip_type(struct thermal_zone_device *thermal, | |
6503e5df | 670 | int trip, enum thermal_trip_type *type) |
3f655ef8 ZR |
671 | { |
672 | struct acpi_thermal *tz = thermal->devdata; | |
673 | int i; | |
674 | ||
675 | if (!tz || trip < 0) | |
676 | return -EINVAL; | |
677 | ||
678 | if (tz->trips.critical.flags.valid) { | |
6503e5df MG |
679 | if (!trip) { |
680 | *type = THERMAL_TRIP_CRITICAL; | |
681 | return 0; | |
682 | } | |
3f655ef8 ZR |
683 | trip--; |
684 | } | |
685 | ||
686 | if (tz->trips.hot.flags.valid) { | |
6503e5df MG |
687 | if (!trip) { |
688 | *type = THERMAL_TRIP_HOT; | |
689 | return 0; | |
690 | } | |
3f655ef8 ZR |
691 | trip--; |
692 | } | |
693 | ||
694 | if (tz->trips.passive.flags.valid) { | |
6503e5df MG |
695 | if (!trip) { |
696 | *type = THERMAL_TRIP_PASSIVE; | |
697 | return 0; | |
698 | } | |
3f655ef8 ZR |
699 | trip--; |
700 | } | |
701 | ||
702 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && | |
703 | tz->trips.active[i].flags.valid; i++) { | |
6503e5df MG |
704 | if (!trip) { |
705 | *type = THERMAL_TRIP_ACTIVE; | |
706 | return 0; | |
707 | } | |
3f655ef8 ZR |
708 | trip--; |
709 | } | |
710 | ||
711 | return -EINVAL; | |
712 | } | |
713 | ||
714 | static int thermal_get_trip_temp(struct thermal_zone_device *thermal, | |
6503e5df | 715 | int trip, unsigned long *temp) |
3f655ef8 ZR |
716 | { |
717 | struct acpi_thermal *tz = thermal->devdata; | |
718 | int i; | |
719 | ||
720 | if (!tz || trip < 0) | |
721 | return -EINVAL; | |
722 | ||
723 | if (tz->trips.critical.flags.valid) { | |
6503e5df MG |
724 | if (!trip) { |
725 | *temp = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
726 | tz->trips.critical.temperature, |
727 | tz->kelvin_offset); | |
6503e5df MG |
728 | return 0; |
729 | } | |
3f655ef8 ZR |
730 | trip--; |
731 | } | |
732 | ||
733 | if (tz->trips.hot.flags.valid) { | |
6503e5df MG |
734 | if (!trip) { |
735 | *temp = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
736 | tz->trips.hot.temperature, |
737 | tz->kelvin_offset); | |
6503e5df MG |
738 | return 0; |
739 | } | |
3f655ef8 ZR |
740 | trip--; |
741 | } | |
742 | ||
743 | if (tz->trips.passive.flags.valid) { | |
6503e5df MG |
744 | if (!trip) { |
745 | *temp = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
746 | tz->trips.passive.temperature, |
747 | tz->kelvin_offset); | |
6503e5df MG |
748 | return 0; |
749 | } | |
3f655ef8 ZR |
750 | trip--; |
751 | } | |
752 | ||
753 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && | |
754 | tz->trips.active[i].flags.valid; i++) { | |
6503e5df MG |
755 | if (!trip) { |
756 | *temp = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
757 | tz->trips.active[i].temperature, |
758 | tz->kelvin_offset); | |
6503e5df MG |
759 | return 0; |
760 | } | |
3f655ef8 ZR |
761 | trip--; |
762 | } | |
763 | ||
764 | return -EINVAL; | |
765 | } | |
766 | ||
9ec732ff ZR |
767 | static int thermal_get_crit_temp(struct thermal_zone_device *thermal, |
768 | unsigned long *temperature) { | |
769 | struct acpi_thermal *tz = thermal->devdata; | |
770 | ||
771 | if (tz->trips.critical.flags.valid) { | |
772 | *temperature = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
773 | tz->trips.critical.temperature, |
774 | tz->kelvin_offset); | |
9ec732ff ZR |
775 | return 0; |
776 | } else | |
777 | return -EINVAL; | |
778 | } | |
779 | ||
b1569e99 MG |
780 | static int thermal_notify(struct thermal_zone_device *thermal, int trip, |
781 | enum thermal_trip_type trip_type) | |
782 | { | |
783 | u8 type = 0; | |
784 | struct acpi_thermal *tz = thermal->devdata; | |
785 | ||
786 | if (trip_type == THERMAL_TRIP_CRITICAL) | |
787 | type = ACPI_THERMAL_NOTIFY_CRITICAL; | |
788 | else if (trip_type == THERMAL_TRIP_HOT) | |
789 | type = ACPI_THERMAL_NOTIFY_HOT; | |
790 | else | |
791 | return 0; | |
792 | ||
793 | acpi_bus_generate_proc_event(tz->device, type, 1); | |
794 | acpi_bus_generate_netlink_event(tz->device->pnp.device_class, | |
f6f5c45e | 795 | dev_name(&tz->device->dev), type, 1); |
b1569e99 MG |
796 | |
797 | if (trip_type == THERMAL_TRIP_CRITICAL && nocrt) | |
798 | return 1; | |
799 | ||
800 | return 0; | |
801 | } | |
802 | ||
3f655ef8 ZR |
803 | typedef int (*cb)(struct thermal_zone_device *, int, |
804 | struct thermal_cooling_device *); | |
805 | static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, | |
806 | struct thermal_cooling_device *cdev, | |
807 | cb action) | |
808 | { | |
809 | struct acpi_device *device = cdev->devdata; | |
810 | struct acpi_thermal *tz = thermal->devdata; | |
653a00c9 ZR |
811 | struct acpi_device *dev; |
812 | acpi_status status; | |
813 | acpi_handle handle; | |
3f655ef8 ZR |
814 | int i; |
815 | int j; | |
816 | int trip = -1; | |
817 | int result = 0; | |
818 | ||
819 | if (tz->trips.critical.flags.valid) | |
820 | trip++; | |
821 | ||
822 | if (tz->trips.hot.flags.valid) | |
823 | trip++; | |
824 | ||
825 | if (tz->trips.passive.flags.valid) { | |
826 | trip++; | |
827 | for (i = 0; i < tz->trips.passive.devices.count; | |
828 | i++) { | |
653a00c9 ZR |
829 | handle = tz->trips.passive.devices.handles[i]; |
830 | status = acpi_bus_get_device(handle, &dev); | |
831 | if (ACPI_SUCCESS(status) && (dev == device)) { | |
832 | result = action(thermal, trip, cdev); | |
833 | if (result) | |
834 | goto failed; | |
835 | } | |
3f655ef8 ZR |
836 | } |
837 | } | |
838 | ||
839 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { | |
840 | if (!tz->trips.active[i].flags.valid) | |
841 | break; | |
842 | trip++; | |
843 | for (j = 0; | |
844 | j < tz->trips.active[i].devices.count; | |
845 | j++) { | |
653a00c9 ZR |
846 | handle = tz->trips.active[i].devices.handles[j]; |
847 | status = acpi_bus_get_device(handle, &dev); | |
848 | if (ACPI_SUCCESS(status) && (dev == device)) { | |
849 | result = action(thermal, trip, cdev); | |
850 | if (result) | |
851 | goto failed; | |
852 | } | |
3f655ef8 ZR |
853 | } |
854 | } | |
855 | ||
856 | for (i = 0; i < tz->devices.count; i++) { | |
653a00c9 ZR |
857 | handle = tz->devices.handles[i]; |
858 | status = acpi_bus_get_device(handle, &dev); | |
859 | if (ACPI_SUCCESS(status) && (dev == device)) { | |
860 | result = action(thermal, -1, cdev); | |
861 | if (result) | |
862 | goto failed; | |
863 | } | |
3f655ef8 ZR |
864 | } |
865 | ||
866 | failed: | |
867 | return result; | |
868 | } | |
869 | ||
870 | static int | |
871 | acpi_thermal_bind_cooling_device(struct thermal_zone_device *thermal, | |
872 | struct thermal_cooling_device *cdev) | |
873 | { | |
874 | return acpi_thermal_cooling_device_cb(thermal, cdev, | |
875 | thermal_zone_bind_cooling_device); | |
876 | } | |
877 | ||
878 | static int | |
879 | acpi_thermal_unbind_cooling_device(struct thermal_zone_device *thermal, | |
880 | struct thermal_cooling_device *cdev) | |
881 | { | |
882 | return acpi_thermal_cooling_device_cb(thermal, cdev, | |
883 | thermal_zone_unbind_cooling_device); | |
884 | } | |
885 | ||
886 | static struct thermal_zone_device_ops acpi_thermal_zone_ops = { | |
887 | .bind = acpi_thermal_bind_cooling_device, | |
888 | .unbind = acpi_thermal_unbind_cooling_device, | |
889 | .get_temp = thermal_get_temp, | |
890 | .get_mode = thermal_get_mode, | |
891 | .set_mode = thermal_set_mode, | |
892 | .get_trip_type = thermal_get_trip_type, | |
893 | .get_trip_temp = thermal_get_trip_temp, | |
9ec732ff | 894 | .get_crit_temp = thermal_get_crit_temp, |
b1569e99 | 895 | .notify = thermal_notify, |
3f655ef8 ZR |
896 | }; |
897 | ||
898 | static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) | |
899 | { | |
900 | int trips = 0; | |
901 | int result; | |
20733939 | 902 | acpi_status status; |
3f655ef8 ZR |
903 | int i; |
904 | ||
905 | if (tz->trips.critical.flags.valid) | |
906 | trips++; | |
907 | ||
908 | if (tz->trips.hot.flags.valid) | |
909 | trips++; | |
910 | ||
911 | if (tz->trips.passive.flags.valid) | |
912 | trips++; | |
913 | ||
914 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && | |
915 | tz->trips.active[i].flags.valid; i++, trips++); | |
b1569e99 MG |
916 | |
917 | if (tz->trips.passive.flags.valid) | |
918 | tz->thermal_zone = | |
919 | thermal_zone_device_register("acpitz", trips, tz, | |
920 | &acpi_thermal_zone_ops, | |
921 | tz->trips.passive.tc1, | |
922 | tz->trips.passive.tc2, | |
923 | tz->trips.passive.tsp*100, | |
924 | tz->polling_frequency*100); | |
925 | else | |
926 | tz->thermal_zone = | |
927 | thermal_zone_device_register("acpitz", trips, tz, | |
928 | &acpi_thermal_zone_ops, | |
929 | 0, 0, 0, | |
67405439 | 930 | tz->polling_frequency*100); |
bb070e43 | 931 | if (IS_ERR(tz->thermal_zone)) |
3f655ef8 ZR |
932 | return -ENODEV; |
933 | ||
934 | result = sysfs_create_link(&tz->device->dev.kobj, | |
935 | &tz->thermal_zone->device.kobj, "thermal_zone"); | |
936 | if (result) | |
937 | return result; | |
938 | ||
939 | result = sysfs_create_link(&tz->thermal_zone->device.kobj, | |
940 | &tz->device->dev.kobj, "device"); | |
941 | if (result) | |
942 | return result; | |
943 | ||
20733939 ZR |
944 | status = acpi_attach_data(tz->device->handle, |
945 | acpi_bus_private_data_handler, | |
946 | tz->thermal_zone); | |
947 | if (ACPI_FAILURE(status)) { | |
55ac9a01 LM |
948 | printk(KERN_ERR PREFIX |
949 | "Error attaching device data\n"); | |
20733939 ZR |
950 | return -ENODEV; |
951 | } | |
952 | ||
3f655ef8 ZR |
953 | tz->tz_enabled = 1; |
954 | ||
fc3a8828 GKH |
955 | dev_info(&tz->device->dev, "registered as thermal_zone%d\n", |
956 | tz->thermal_zone->id); | |
3f655ef8 ZR |
957 | return 0; |
958 | } | |
959 | ||
960 | static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz) | |
961 | { | |
962 | sysfs_remove_link(&tz->device->dev.kobj, "thermal_zone"); | |
963 | sysfs_remove_link(&tz->thermal_zone->device.kobj, "device"); | |
964 | thermal_zone_device_unregister(tz->thermal_zone); | |
965 | tz->thermal_zone = NULL; | |
20733939 | 966 | acpi_detach_data(tz->device->handle, acpi_bus_private_data_handler); |
3f655ef8 ZR |
967 | } |
968 | ||
969 | ||
1da177e4 LT |
970 | /* -------------------------------------------------------------------------- |
971 | FS Interface (/proc) | |
972 | -------------------------------------------------------------------------- */ | |
973 | ||
4be44fcd | 974 | static struct proc_dir_entry *acpi_thermal_dir; |
1da177e4 LT |
975 | |
976 | static int acpi_thermal_state_seq_show(struct seq_file *seq, void *offset) | |
977 | { | |
50dd0969 | 978 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 979 | |
1da177e4 LT |
980 | |
981 | if (!tz) | |
982 | goto end; | |
983 | ||
984 | seq_puts(seq, "state: "); | |
985 | ||
4be44fcd LB |
986 | if (!tz->state.critical && !tz->state.hot && !tz->state.passive |
987 | && !tz->state.active) | |
1da177e4 LT |
988 | seq_puts(seq, "ok\n"); |
989 | else { | |
990 | if (tz->state.critical) | |
991 | seq_puts(seq, "critical "); | |
992 | if (tz->state.hot) | |
993 | seq_puts(seq, "hot "); | |
994 | if (tz->state.passive) | |
995 | seq_puts(seq, "passive "); | |
996 | if (tz->state.active) | |
997 | seq_printf(seq, "active[%d]", tz->state.active_index); | |
998 | seq_puts(seq, "\n"); | |
999 | } | |
1000 | ||
4be44fcd | 1001 | end: |
d550d98d | 1002 | return 0; |
1da177e4 LT |
1003 | } |
1004 | ||
1005 | static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file) | |
1006 | { | |
1007 | return single_open(file, acpi_thermal_state_seq_show, PDE(inode)->data); | |
1008 | } | |
1009 | ||
1da177e4 LT |
1010 | static int acpi_thermal_temp_seq_show(struct seq_file *seq, void *offset) |
1011 | { | |
4be44fcd | 1012 | int result = 0; |
50dd0969 | 1013 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 1014 | |
1da177e4 LT |
1015 | |
1016 | if (!tz) | |
1017 | goto end; | |
1018 | ||
1019 | result = acpi_thermal_get_temperature(tz); | |
1020 | if (result) | |
1021 | goto end; | |
1022 | ||
4be44fcd LB |
1023 | seq_printf(seq, "temperature: %ld C\n", |
1024 | KELVIN_TO_CELSIUS(tz->temperature)); | |
1da177e4 | 1025 | |
4be44fcd | 1026 | end: |
d550d98d | 1027 | return 0; |
1da177e4 LT |
1028 | } |
1029 | ||
1030 | static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file) | |
1031 | { | |
1032 | return single_open(file, acpi_thermal_temp_seq_show, PDE(inode)->data); | |
1033 | } | |
1034 | ||
1da177e4 LT |
1035 | static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset) |
1036 | { | |
50dd0969 | 1037 | struct acpi_thermal *tz = seq->private; |
68ccfaa8 | 1038 | struct acpi_device *device; |
e7c746ef TR |
1039 | acpi_status status; |
1040 | ||
4be44fcd LB |
1041 | int i = 0; |
1042 | int j = 0; | |
1da177e4 | 1043 | |
1da177e4 LT |
1044 | |
1045 | if (!tz) | |
1046 | goto end; | |
1047 | ||
1048 | if (tz->trips.critical.flags.valid) | |
f5487145 LB |
1049 | seq_printf(seq, "critical (S5): %ld C%s", |
1050 | KELVIN_TO_CELSIUS(tz->trips.critical.temperature), | |
1051 | nocrt ? " <disabled>\n" : "\n"); | |
1da177e4 LT |
1052 | |
1053 | if (tz->trips.hot.flags.valid) | |
f5487145 LB |
1054 | seq_printf(seq, "hot (S4): %ld C%s", |
1055 | KELVIN_TO_CELSIUS(tz->trips.hot.temperature), | |
1056 | nocrt ? " <disabled>\n" : "\n"); | |
1da177e4 LT |
1057 | |
1058 | if (tz->trips.passive.flags.valid) { | |
4be44fcd LB |
1059 | seq_printf(seq, |
1060 | "passive: %ld C: tc1=%lu tc2=%lu tsp=%lu devices=", | |
1061 | KELVIN_TO_CELSIUS(tz->trips.passive.temperature), | |
1062 | tz->trips.passive.tc1, tz->trips.passive.tc2, | |
1063 | tz->trips.passive.tsp); | |
1064 | for (j = 0; j < tz->trips.passive.devices.count; j++) { | |
e7c746ef TR |
1065 | status = acpi_bus_get_device(tz->trips.passive.devices. |
1066 | handles[j], &device); | |
1067 | seq_printf(seq, "%4.4s ", status ? "" : | |
1068 | acpi_device_bid(device)); | |
1da177e4 LT |
1069 | } |
1070 | seq_puts(seq, "\n"); | |
7fb2616e FP |
1071 | } else { |
1072 | seq_printf(seq, "passive (forced):"); | |
1073 | if (tz->thermal_zone->forced_passive) | |
1074 | seq_printf(seq, " %i C\n", | |
1075 | tz->thermal_zone->forced_passive / 1000); | |
1076 | else | |
1077 | seq_printf(seq, "<not set>\n"); | |
1da177e4 LT |
1078 | } |
1079 | ||
1080 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { | |
1081 | if (!(tz->trips.active[i].flags.valid)) | |
1082 | break; | |
1083 | seq_printf(seq, "active[%d]: %ld C: devices=", | |
4be44fcd LB |
1084 | i, |
1085 | KELVIN_TO_CELSIUS(tz->trips.active[i].temperature)); | |
68ccfaa8 | 1086 | for (j = 0; j < tz->trips.active[i].devices.count; j++){ |
e7c746ef TR |
1087 | status = acpi_bus_get_device(tz->trips.active[i]. |
1088 | devices.handles[j], | |
1089 | &device); | |
1090 | seq_printf(seq, "%4.4s ", status ? "" : | |
1091 | acpi_device_bid(device)); | |
68ccfaa8 | 1092 | } |
1da177e4 LT |
1093 | seq_puts(seq, "\n"); |
1094 | } | |
1095 | ||
4be44fcd | 1096 | end: |
d550d98d | 1097 | return 0; |
1da177e4 LT |
1098 | } |
1099 | ||
1100 | static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file) | |
1101 | { | |
1102 | return single_open(file, acpi_thermal_trip_seq_show, PDE(inode)->data); | |
1103 | } | |
1104 | ||
1da177e4 LT |
1105 | static int acpi_thermal_cooling_seq_show(struct seq_file *seq, void *offset) |
1106 | { | |
50dd0969 | 1107 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 1108 | |
1da177e4 LT |
1109 | |
1110 | if (!tz) | |
1111 | goto end; | |
1112 | ||
eaca2d3f | 1113 | if (!tz->flags.cooling_mode) |
1da177e4 | 1114 | seq_puts(seq, "<setting not supported>\n"); |
1da177e4 | 1115 | else |
eaca2d3f | 1116 | seq_puts(seq, "0 - Active; 1 - Passive\n"); |
1da177e4 | 1117 | |
4be44fcd | 1118 | end: |
d550d98d | 1119 | return 0; |
1da177e4 LT |
1120 | } |
1121 | ||
1122 | static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file) | |
1123 | { | |
1124 | return single_open(file, acpi_thermal_cooling_seq_show, | |
4be44fcd | 1125 | PDE(inode)->data); |
1da177e4 LT |
1126 | } |
1127 | ||
1128 | static ssize_t | |
4be44fcd LB |
1129 | acpi_thermal_write_cooling_mode(struct file *file, |
1130 | const char __user * buffer, | |
1131 | size_t count, loff_t * ppos) | |
1da177e4 | 1132 | { |
50dd0969 JE |
1133 | struct seq_file *m = file->private_data; |
1134 | struct acpi_thermal *tz = m->private; | |
4be44fcd LB |
1135 | int result = 0; |
1136 | char mode_string[12] = { '\0' }; | |
1da177e4 | 1137 | |
1da177e4 LT |
1138 | |
1139 | if (!tz || (count > sizeof(mode_string) - 1)) | |
d550d98d | 1140 | return -EINVAL; |
1da177e4 LT |
1141 | |
1142 | if (!tz->flags.cooling_mode) | |
d550d98d | 1143 | return -ENODEV; |
1da177e4 LT |
1144 | |
1145 | if (copy_from_user(mode_string, buffer, count)) | |
d550d98d | 1146 | return -EFAULT; |
4be44fcd | 1147 | |
1da177e4 | 1148 | mode_string[count] = '\0'; |
4be44fcd LB |
1149 | |
1150 | result = acpi_thermal_set_cooling_mode(tz, | |
1151 | simple_strtoul(mode_string, NULL, | |
1152 | 0)); | |
1da177e4 | 1153 | if (result) |
d550d98d | 1154 | return result; |
1da177e4 LT |
1155 | |
1156 | acpi_thermal_check(tz); | |
1157 | ||
d550d98d | 1158 | return count; |
1da177e4 LT |
1159 | } |
1160 | ||
1da177e4 LT |
1161 | static int acpi_thermal_polling_seq_show(struct seq_file *seq, void *offset) |
1162 | { | |
50dd0969 | 1163 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 1164 | |
1da177e4 LT |
1165 | |
1166 | if (!tz) | |
1167 | goto end; | |
1168 | ||
b1569e99 | 1169 | if (!tz->thermal_zone->polling_delay) { |
1da177e4 LT |
1170 | seq_puts(seq, "<polling disabled>\n"); |
1171 | goto end; | |
1172 | } | |
1173 | ||
b1569e99 MG |
1174 | seq_printf(seq, "polling frequency: %d seconds\n", |
1175 | (tz->thermal_zone->polling_delay / 1000)); | |
1da177e4 | 1176 | |
4be44fcd | 1177 | end: |
d550d98d | 1178 | return 0; |
1da177e4 LT |
1179 | } |
1180 | ||
1181 | static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file) | |
1182 | { | |
1183 | return single_open(file, acpi_thermal_polling_seq_show, | |
4be44fcd | 1184 | PDE(inode)->data); |
1da177e4 LT |
1185 | } |
1186 | ||
1187 | static ssize_t | |
4be44fcd LB |
1188 | acpi_thermal_write_polling(struct file *file, |
1189 | const char __user * buffer, | |
1190 | size_t count, loff_t * ppos) | |
1da177e4 | 1191 | { |
50dd0969 JE |
1192 | struct seq_file *m = file->private_data; |
1193 | struct acpi_thermal *tz = m->private; | |
4be44fcd LB |
1194 | int result = 0; |
1195 | char polling_string[12] = { '\0' }; | |
1196 | int seconds = 0; | |
1da177e4 | 1197 | |
1da177e4 LT |
1198 | |
1199 | if (!tz || (count > sizeof(polling_string) - 1)) | |
d550d98d | 1200 | return -EINVAL; |
4be44fcd | 1201 | |
1da177e4 | 1202 | if (copy_from_user(polling_string, buffer, count)) |
d550d98d | 1203 | return -EFAULT; |
4be44fcd | 1204 | |
1da177e4 LT |
1205 | polling_string[count] = '\0'; |
1206 | ||
1207 | seconds = simple_strtoul(polling_string, NULL, 0); | |
4be44fcd | 1208 | |
1da177e4 LT |
1209 | result = acpi_thermal_set_polling(tz, seconds); |
1210 | if (result) | |
d550d98d | 1211 | return result; |
1da177e4 LT |
1212 | |
1213 | acpi_thermal_check(tz); | |
1214 | ||
d550d98d | 1215 | return count; |
1da177e4 LT |
1216 | } |
1217 | ||
4be44fcd | 1218 | static int acpi_thermal_add_fs(struct acpi_device *device) |
1da177e4 | 1219 | { |
4be44fcd | 1220 | struct proc_dir_entry *entry = NULL; |
1da177e4 | 1221 | |
1da177e4 LT |
1222 | |
1223 | if (!acpi_device_dir(device)) { | |
1224 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1225 | acpi_thermal_dir); |
1da177e4 | 1226 | if (!acpi_device_dir(device)) |
d550d98d | 1227 | return -ENODEV; |
1da177e4 LT |
1228 | } |
1229 | ||
1230 | /* 'state' [R] */ | |
cf7acfab DL |
1231 | entry = proc_create_data(ACPI_THERMAL_FILE_STATE, |
1232 | S_IRUGO, acpi_device_dir(device), | |
1233 | &acpi_thermal_state_fops, | |
1234 | acpi_driver_data(device)); | |
1da177e4 | 1235 | if (!entry) |
d550d98d | 1236 | return -ENODEV; |
1da177e4 LT |
1237 | |
1238 | /* 'temperature' [R] */ | |
cf7acfab DL |
1239 | entry = proc_create_data(ACPI_THERMAL_FILE_TEMPERATURE, |
1240 | S_IRUGO, acpi_device_dir(device), | |
1241 | &acpi_thermal_temp_fops, | |
1242 | acpi_driver_data(device)); | |
1da177e4 | 1243 | if (!entry) |
d550d98d | 1244 | return -ENODEV; |
1da177e4 | 1245 | |
2db9ccba | 1246 | /* 'trip_points' [R] */ |
cf7acfab DL |
1247 | entry = proc_create_data(ACPI_THERMAL_FILE_TRIP_POINTS, |
1248 | S_IRUGO, | |
1249 | acpi_device_dir(device), | |
1250 | &acpi_thermal_trip_fops, | |
1251 | acpi_driver_data(device)); | |
1da177e4 | 1252 | if (!entry) |
d550d98d | 1253 | return -ENODEV; |
1da177e4 LT |
1254 | |
1255 | /* 'cooling_mode' [R/W] */ | |
cf7acfab DL |
1256 | entry = proc_create_data(ACPI_THERMAL_FILE_COOLING_MODE, |
1257 | S_IFREG | S_IRUGO | S_IWUSR, | |
1258 | acpi_device_dir(device), | |
1259 | &acpi_thermal_cooling_fops, | |
1260 | acpi_driver_data(device)); | |
1da177e4 | 1261 | if (!entry) |
d550d98d | 1262 | return -ENODEV; |
1da177e4 LT |
1263 | |
1264 | /* 'polling_frequency' [R/W] */ | |
cf7acfab DL |
1265 | entry = proc_create_data(ACPI_THERMAL_FILE_POLLING_FREQ, |
1266 | S_IFREG | S_IRUGO | S_IWUSR, | |
1267 | acpi_device_dir(device), | |
1268 | &acpi_thermal_polling_fops, | |
1269 | acpi_driver_data(device)); | |
1da177e4 | 1270 | if (!entry) |
d550d98d | 1271 | return -ENODEV; |
d550d98d | 1272 | return 0; |
1da177e4 LT |
1273 | } |
1274 | ||
4be44fcd | 1275 | static int acpi_thermal_remove_fs(struct acpi_device *device) |
1da177e4 | 1276 | { |
1da177e4 LT |
1277 | |
1278 | if (acpi_device_dir(device)) { | |
1279 | remove_proc_entry(ACPI_THERMAL_FILE_POLLING_FREQ, | |
1280 | acpi_device_dir(device)); | |
1281 | remove_proc_entry(ACPI_THERMAL_FILE_COOLING_MODE, | |
1282 | acpi_device_dir(device)); | |
1283 | remove_proc_entry(ACPI_THERMAL_FILE_TRIP_POINTS, | |
1284 | acpi_device_dir(device)); | |
1285 | remove_proc_entry(ACPI_THERMAL_FILE_TEMPERATURE, | |
1286 | acpi_device_dir(device)); | |
1287 | remove_proc_entry(ACPI_THERMAL_FILE_STATE, | |
1288 | acpi_device_dir(device)); | |
1289 | remove_proc_entry(acpi_device_bid(device), acpi_thermal_dir); | |
1290 | acpi_device_dir(device) = NULL; | |
1291 | } | |
1292 | ||
d550d98d | 1293 | return 0; |
1da177e4 LT |
1294 | } |
1295 | ||
1da177e4 LT |
1296 | /* -------------------------------------------------------------------------- |
1297 | Driver Interface | |
1298 | -------------------------------------------------------------------------- */ | |
1299 | ||
342d550d | 1300 | static void acpi_thermal_notify(struct acpi_device *device, u32 event) |
1da177e4 | 1301 | { |
342d550d | 1302 | struct acpi_thermal *tz = acpi_driver_data(device); |
1da177e4 | 1303 | |
1da177e4 LT |
1304 | |
1305 | if (!tz) | |
d550d98d | 1306 | return; |
1da177e4 | 1307 | |
1da177e4 LT |
1308 | switch (event) { |
1309 | case ACPI_THERMAL_NOTIFY_TEMPERATURE: | |
1310 | acpi_thermal_check(tz); | |
1311 | break; | |
1312 | case ACPI_THERMAL_NOTIFY_THRESHOLDS: | |
ce44e197 | 1313 | acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_THRESHOLDS); |
1da177e4 | 1314 | acpi_thermal_check(tz); |
14e04fb3 | 1315 | acpi_bus_generate_proc_event(device, event, 0); |
962ce8ca | 1316 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
0794469d | 1317 | dev_name(&device->dev), event, 0); |
1da177e4 LT |
1318 | break; |
1319 | case ACPI_THERMAL_NOTIFY_DEVICES: | |
ce44e197 ZR |
1320 | acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_DEVICES); |
1321 | acpi_thermal_check(tz); | |
14e04fb3 | 1322 | acpi_bus_generate_proc_event(device, event, 0); |
962ce8ca | 1323 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
0794469d | 1324 | dev_name(&device->dev), event, 0); |
1da177e4 LT |
1325 | break; |
1326 | default: | |
1327 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1328 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1329 | break; |
1330 | } | |
1da177e4 LT |
1331 | } |
1332 | ||
4be44fcd | 1333 | static int acpi_thermal_get_info(struct acpi_thermal *tz) |
1da177e4 | 1334 | { |
4be44fcd | 1335 | int result = 0; |
1da177e4 | 1336 | |
1da177e4 LT |
1337 | |
1338 | if (!tz) | |
d550d98d | 1339 | return -EINVAL; |
1da177e4 LT |
1340 | |
1341 | /* Get temperature [_TMP] (required) */ | |
1342 | result = acpi_thermal_get_temperature(tz); | |
1343 | if (result) | |
d550d98d | 1344 | return result; |
1da177e4 LT |
1345 | |
1346 | /* Get trip points [_CRT, _PSV, etc.] (required) */ | |
1347 | result = acpi_thermal_get_trip_points(tz); | |
1348 | if (result) | |
d550d98d | 1349 | return result; |
1da177e4 LT |
1350 | |
1351 | /* Set the cooling mode [_SCP] to active cooling (default) */ | |
1352 | result = acpi_thermal_set_cooling_mode(tz, ACPI_THERMAL_MODE_ACTIVE); | |
4be44fcd | 1353 | if (!result) |
1da177e4 | 1354 | tz->flags.cooling_mode = 1; |
1da177e4 LT |
1355 | |
1356 | /* Get default polling frequency [_TZP] (optional) */ | |
1357 | if (tzp) | |
1358 | tz->polling_frequency = tzp; | |
1359 | else | |
1360 | acpi_thermal_get_polling_frequency(tz); | |
1361 | ||
d550d98d | 1362 | return 0; |
1da177e4 LT |
1363 | } |
1364 | ||
13614e37 JD |
1365 | /* |
1366 | * The exact offset between Kelvin and degree Celsius is 273.15. However ACPI | |
1367 | * handles temperature values with a single decimal place. As a consequence, | |
1368 | * some implementations use an offset of 273.1 and others use an offset of | |
1369 | * 273.2. Try to find out which one is being used, to present the most | |
1370 | * accurate and visually appealing number. | |
1371 | * | |
1372 | * The heuristic below should work for all ACPI thermal zones which have a | |
1373 | * critical trip point with a value being a multiple of 0.5 degree Celsius. | |
1374 | */ | |
1375 | static void acpi_thermal_guess_offset(struct acpi_thermal *tz) | |
1376 | { | |
1377 | if (tz->trips.critical.flags.valid && | |
1378 | (tz->trips.critical.temperature % 5) == 1) | |
1379 | tz->kelvin_offset = 2731; | |
1380 | else | |
1381 | tz->kelvin_offset = 2732; | |
1382 | } | |
1383 | ||
4be44fcd | 1384 | static int acpi_thermal_add(struct acpi_device *device) |
1da177e4 | 1385 | { |
4be44fcd | 1386 | int result = 0; |
4be44fcd | 1387 | struct acpi_thermal *tz = NULL; |
1da177e4 | 1388 | |
1da177e4 LT |
1389 | |
1390 | if (!device) | |
d550d98d | 1391 | return -EINVAL; |
1da177e4 | 1392 | |
36bcbec7 | 1393 | tz = kzalloc(sizeof(struct acpi_thermal), GFP_KERNEL); |
1da177e4 | 1394 | if (!tz) |
d550d98d | 1395 | return -ENOMEM; |
1da177e4 | 1396 | |
8348e1b1 | 1397 | tz->device = device; |
1da177e4 LT |
1398 | strcpy(tz->name, device->pnp.bus_id); |
1399 | strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME); | |
1400 | strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS); | |
db89b4f0 | 1401 | device->driver_data = tz; |
6e215785 | 1402 | mutex_init(&tz->lock); |
3f655ef8 ZR |
1403 | |
1404 | ||
1da177e4 LT |
1405 | result = acpi_thermal_get_info(tz); |
1406 | if (result) | |
3f655ef8 ZR |
1407 | goto free_memory; |
1408 | ||
13614e37 JD |
1409 | acpi_thermal_guess_offset(tz); |
1410 | ||
3f655ef8 ZR |
1411 | result = acpi_thermal_register_thermal_zone(tz); |
1412 | if (result) | |
1413 | goto free_memory; | |
1da177e4 LT |
1414 | |
1415 | result = acpi_thermal_add_fs(device); | |
1416 | if (result) | |
3f655ef8 | 1417 | goto unregister_thermal_zone; |
1da177e4 | 1418 | |
1da177e4 | 1419 | printk(KERN_INFO PREFIX "%s [%s] (%ld C)\n", |
4be44fcd LB |
1420 | acpi_device_name(device), acpi_device_bid(device), |
1421 | KELVIN_TO_CELSIUS(tz->temperature)); | |
3f655ef8 | 1422 | goto end; |
1da177e4 | 1423 | |
3f655ef8 ZR |
1424 | unregister_thermal_zone: |
1425 | thermal_zone_device_unregister(tz->thermal_zone); | |
1426 | free_memory: | |
1427 | kfree(tz); | |
1428 | end: | |
d550d98d | 1429 | return result; |
1da177e4 LT |
1430 | } |
1431 | ||
4be44fcd | 1432 | static int acpi_thermal_remove(struct acpi_device *device, int type) |
1da177e4 | 1433 | { |
4be44fcd | 1434 | struct acpi_thermal *tz = NULL; |
1da177e4 | 1435 | |
1da177e4 | 1436 | if (!device || !acpi_driver_data(device)) |
d550d98d | 1437 | return -EINVAL; |
1da177e4 | 1438 | |
50dd0969 | 1439 | tz = acpi_driver_data(device); |
1da177e4 | 1440 | |
1da177e4 | 1441 | acpi_thermal_remove_fs(device); |
3f655ef8 | 1442 | acpi_thermal_unregister_thermal_zone(tz); |
6e215785 | 1443 | mutex_destroy(&tz->lock); |
1da177e4 | 1444 | kfree(tz); |
d550d98d | 1445 | return 0; |
1da177e4 LT |
1446 | } |
1447 | ||
5d9464a4 | 1448 | static int acpi_thermal_resume(struct acpi_device *device) |
74ce1468 KK |
1449 | { |
1450 | struct acpi_thermal *tz = NULL; | |
b1028c54 KK |
1451 | int i, j, power_state, result; |
1452 | ||
74ce1468 KK |
1453 | |
1454 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 1455 | return -EINVAL; |
74ce1468 | 1456 | |
50dd0969 | 1457 | tz = acpi_driver_data(device); |
74ce1468 | 1458 | |
bed936f7 | 1459 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { |
b1028c54 KK |
1460 | if (!(&tz->trips.active[i])) |
1461 | break; | |
1462 | if (!tz->trips.active[i].flags.valid) | |
1463 | break; | |
1464 | tz->trips.active[i].flags.enabled = 1; | |
1465 | for (j = 0; j < tz->trips.active[i].devices.count; j++) { | |
1466 | result = acpi_bus_get_power(tz->trips.active[i].devices. | |
1467 | handles[j], &power_state); | |
1468 | if (result || (power_state != ACPI_STATE_D0)) { | |
1469 | tz->trips.active[i].flags.enabled = 0; | |
1470 | break; | |
1471 | } | |
bed936f7 | 1472 | } |
b1028c54 | 1473 | tz->state.active |= tz->trips.active[i].flags.enabled; |
bed936f7 KK |
1474 | } |
1475 | ||
b1028c54 | 1476 | acpi_thermal_check(tz); |
74ce1468 KK |
1477 | |
1478 | return AE_OK; | |
1479 | } | |
1480 | ||
1855256c | 1481 | static int thermal_act(const struct dmi_system_id *d) { |
0b5bfa1c LB |
1482 | |
1483 | if (act == 0) { | |
1484 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1485 | "disabling all active thermal trip points\n", d->ident); | |
1486 | act = -1; | |
1487 | } | |
1488 | return 0; | |
1489 | } | |
1855256c | 1490 | static int thermal_nocrt(const struct dmi_system_id *d) { |
8c99fdce LB |
1491 | |
1492 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1493 | "disabling all critical thermal trip point actions.\n", d->ident); | |
1494 | nocrt = 1; | |
1495 | return 0; | |
1496 | } | |
1855256c | 1497 | static int thermal_tzp(const struct dmi_system_id *d) { |
0b5bfa1c LB |
1498 | |
1499 | if (tzp == 0) { | |
1500 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1501 | "enabling thermal zone polling\n", d->ident); | |
1502 | tzp = 300; /* 300 dS = 30 Seconds */ | |
1503 | } | |
1504 | return 0; | |
1505 | } | |
1855256c | 1506 | static int thermal_psv(const struct dmi_system_id *d) { |
0b5bfa1c LB |
1507 | |
1508 | if (psv == 0) { | |
1509 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1510 | "disabling all passive thermal trip points\n", d->ident); | |
1511 | psv = -1; | |
1512 | } | |
1513 | return 0; | |
1514 | } | |
1515 | ||
1516 | static struct dmi_system_id thermal_dmi_table[] __initdata = { | |
1517 | /* | |
1518 | * Award BIOS on this AOpen makes thermal control almost worthless. | |
1519 | * http://bugzilla.kernel.org/show_bug.cgi?id=8842 | |
1520 | */ | |
1521 | { | |
1522 | .callback = thermal_act, | |
1523 | .ident = "AOpen i915GMm-HFS", | |
1524 | .matches = { | |
1525 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
1526 | DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), | |
1527 | }, | |
1528 | }, | |
1529 | { | |
1530 | .callback = thermal_psv, | |
1531 | .ident = "AOpen i915GMm-HFS", | |
1532 | .matches = { | |
1533 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
1534 | DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), | |
1535 | }, | |
1536 | }, | |
1537 | { | |
1538 | .callback = thermal_tzp, | |
1539 | .ident = "AOpen i915GMm-HFS", | |
1540 | .matches = { | |
1541 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
1542 | DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), | |
1543 | }, | |
1544 | }, | |
8c99fdce LB |
1545 | { |
1546 | .callback = thermal_nocrt, | |
1547 | .ident = "Gigabyte GA-7ZX", | |
1548 | .matches = { | |
1549 | DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co., Ltd."), | |
1550 | DMI_MATCH(DMI_BOARD_NAME, "7ZX"), | |
1551 | }, | |
1552 | }, | |
0b5bfa1c LB |
1553 | {} |
1554 | }; | |
0b5bfa1c | 1555 | |
4be44fcd | 1556 | static int __init acpi_thermal_init(void) |
1da177e4 | 1557 | { |
4be44fcd | 1558 | int result = 0; |
1da177e4 | 1559 | |
0b5bfa1c LB |
1560 | dmi_check_system(thermal_dmi_table); |
1561 | ||
72b33ef8 LB |
1562 | if (off) { |
1563 | printk(KERN_NOTICE "ACPI: thermal control disabled\n"); | |
1564 | return -ENODEV; | |
1565 | } | |
1da177e4 LT |
1566 | acpi_thermal_dir = proc_mkdir(ACPI_THERMAL_CLASS, acpi_root_dir); |
1567 | if (!acpi_thermal_dir) | |
d550d98d | 1568 | return -ENODEV; |
1da177e4 LT |
1569 | |
1570 | result = acpi_bus_register_driver(&acpi_thermal_driver); | |
1571 | if (result < 0) { | |
1572 | remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir); | |
d550d98d | 1573 | return -ENODEV; |
1da177e4 LT |
1574 | } |
1575 | ||
d550d98d | 1576 | return 0; |
1da177e4 LT |
1577 | } |
1578 | ||
4be44fcd | 1579 | static void __exit acpi_thermal_exit(void) |
1da177e4 | 1580 | { |
1da177e4 LT |
1581 | |
1582 | acpi_bus_unregister_driver(&acpi_thermal_driver); | |
1583 | ||
1584 | remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir); | |
1585 | ||
d550d98d | 1586 | return; |
1da177e4 LT |
1587 | } |
1588 | ||
1da177e4 LT |
1589 | module_init(acpi_thermal_init); |
1590 | module_exit(acpi_thermal_exit); |