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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 | 37 | #include <linux/init.h> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
1da177e4 | 39 | #include <linux/types.h> |
43d9f87b ZR |
40 | |
41 | #ifdef CONFIG_ACPI_PROCFS | |
1da177e4 | 42 | #include <linux/proc_fs.h> |
43d9f87b ZR |
43 | #include <linux/seq_file.h> |
44 | #endif | |
45 | ||
cd354f1a | 46 | #include <linux/jiffies.h> |
1da177e4 | 47 | #include <linux/kmod.h> |
10a0a8d4 | 48 | #include <linux/reboot.h> |
f6f5c45e | 49 | #include <linux/device.h> |
1da177e4 | 50 | #include <asm/uaccess.h> |
3f655ef8 | 51 | #include <linux/thermal.h> |
1da177e4 LT |
52 | #include <acpi/acpi_bus.h> |
53 | #include <acpi/acpi_drivers.h> | |
54 | ||
a192a958 LB |
55 | #define PREFIX "ACPI: " |
56 | ||
1da177e4 | 57 | #define ACPI_THERMAL_CLASS "thermal_zone" |
1da177e4 LT |
58 | #define ACPI_THERMAL_DEVICE_NAME "Thermal Zone" |
59 | #define ACPI_THERMAL_FILE_STATE "state" | |
60 | #define ACPI_THERMAL_FILE_TEMPERATURE "temperature" | |
61 | #define ACPI_THERMAL_FILE_TRIP_POINTS "trip_points" | |
62 | #define ACPI_THERMAL_FILE_COOLING_MODE "cooling_mode" | |
63 | #define ACPI_THERMAL_FILE_POLLING_FREQ "polling_frequency" | |
64 | #define ACPI_THERMAL_NOTIFY_TEMPERATURE 0x80 | |
65 | #define ACPI_THERMAL_NOTIFY_THRESHOLDS 0x81 | |
66 | #define ACPI_THERMAL_NOTIFY_DEVICES 0x82 | |
67 | #define ACPI_THERMAL_NOTIFY_CRITICAL 0xF0 | |
68 | #define ACPI_THERMAL_NOTIFY_HOT 0xF1 | |
69 | #define ACPI_THERMAL_MODE_ACTIVE 0x00 | |
1da177e4 LT |
70 | |
71 | #define ACPI_THERMAL_MAX_ACTIVE 10 | |
72 | #define ACPI_THERMAL_MAX_LIMIT_STR_LEN 65 | |
73 | ||
1da177e4 | 74 | #define _COMPONENT ACPI_THERMAL_COMPONENT |
f52fd66d | 75 | ACPI_MODULE_NAME("thermal"); |
1da177e4 | 76 | |
1cbf4c56 | 77 | MODULE_AUTHOR("Paul Diefenbaugh"); |
7cda93e0 | 78 | MODULE_DESCRIPTION("ACPI Thermal Zone Driver"); |
1da177e4 LT |
79 | MODULE_LICENSE("GPL"); |
80 | ||
f8707ec9 LB |
81 | static int act; |
82 | module_param(act, int, 0644); | |
3c1d36da | 83 | MODULE_PARM_DESC(act, "Disable or override all lowest active trip points."); |
f8707ec9 | 84 | |
c52a7419 LB |
85 | static int crt; |
86 | module_param(crt, int, 0644); | |
87 | MODULE_PARM_DESC(crt, "Disable or lower all critical trip points."); | |
88 | ||
1da177e4 | 89 | static int tzp; |
730ff34d | 90 | module_param(tzp, int, 0444); |
3c1d36da | 91 | MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds."); |
1da177e4 | 92 | |
f5487145 LB |
93 | static int nocrt; |
94 | module_param(nocrt, int, 0); | |
8c99fdce | 95 | MODULE_PARM_DESC(nocrt, "Set to take no action upon ACPI thermal zone critical trips points."); |
f5487145 | 96 | |
72b33ef8 LB |
97 | static int off; |
98 | module_param(off, int, 0); | |
3c1d36da | 99 | MODULE_PARM_DESC(off, "Set to disable ACPI thermal support."); |
72b33ef8 | 100 | |
a70cdc52 LB |
101 | static int psv; |
102 | module_param(psv, int, 0644); | |
3c1d36da | 103 | MODULE_PARM_DESC(psv, "Disable or override all passive trip points."); |
a70cdc52 | 104 | |
4be44fcd LB |
105 | static int acpi_thermal_add(struct acpi_device *device); |
106 | static int acpi_thermal_remove(struct acpi_device *device, int type); | |
5d9464a4 | 107 | static int acpi_thermal_resume(struct acpi_device *device); |
342d550d | 108 | static void acpi_thermal_notify(struct acpi_device *device, u32 event); |
1da177e4 | 109 | |
1ba90e3a TR |
110 | static const struct acpi_device_id thermal_device_ids[] = { |
111 | {ACPI_THERMAL_HID, 0}, | |
112 | {"", 0}, | |
113 | }; | |
114 | MODULE_DEVICE_TABLE(acpi, thermal_device_ids); | |
115 | ||
1da177e4 | 116 | static struct acpi_driver acpi_thermal_driver = { |
c2b6705b | 117 | .name = "thermal", |
4be44fcd | 118 | .class = ACPI_THERMAL_CLASS, |
1ba90e3a | 119 | .ids = thermal_device_ids, |
4be44fcd LB |
120 | .ops = { |
121 | .add = acpi_thermal_add, | |
122 | .remove = acpi_thermal_remove, | |
74ce1468 | 123 | .resume = acpi_thermal_resume, |
342d550d | 124 | .notify = acpi_thermal_notify, |
4be44fcd | 125 | }, |
1da177e4 LT |
126 | }; |
127 | ||
128 | struct acpi_thermal_state { | |
4be44fcd LB |
129 | u8 critical:1; |
130 | u8 hot:1; | |
131 | u8 passive:1; | |
132 | u8 active:1; | |
133 | u8 reserved:4; | |
134 | int active_index; | |
1da177e4 LT |
135 | }; |
136 | ||
137 | struct acpi_thermal_state_flags { | |
4be44fcd LB |
138 | u8 valid:1; |
139 | u8 enabled:1; | |
140 | u8 reserved:6; | |
1da177e4 LT |
141 | }; |
142 | ||
143 | struct acpi_thermal_critical { | |
144 | struct acpi_thermal_state_flags flags; | |
4be44fcd | 145 | unsigned long temperature; |
1da177e4 LT |
146 | }; |
147 | ||
148 | struct acpi_thermal_hot { | |
149 | struct acpi_thermal_state_flags flags; | |
4be44fcd | 150 | unsigned long temperature; |
1da177e4 LT |
151 | }; |
152 | ||
153 | struct acpi_thermal_passive { | |
154 | struct acpi_thermal_state_flags flags; | |
4be44fcd LB |
155 | unsigned long temperature; |
156 | unsigned long tc1; | |
157 | unsigned long tc2; | |
158 | unsigned long tsp; | |
159 | struct acpi_handle_list devices; | |
1da177e4 LT |
160 | }; |
161 | ||
162 | struct acpi_thermal_active { | |
163 | struct acpi_thermal_state_flags flags; | |
4be44fcd LB |
164 | unsigned long temperature; |
165 | struct acpi_handle_list devices; | |
1da177e4 LT |
166 | }; |
167 | ||
168 | struct acpi_thermal_trips { | |
169 | struct acpi_thermal_critical critical; | |
4be44fcd | 170 | struct acpi_thermal_hot hot; |
1da177e4 LT |
171 | struct acpi_thermal_passive passive; |
172 | struct acpi_thermal_active active[ACPI_THERMAL_MAX_ACTIVE]; | |
173 | }; | |
174 | ||
175 | struct acpi_thermal_flags { | |
4be44fcd LB |
176 | u8 cooling_mode:1; /* _SCP */ |
177 | u8 devices:1; /* _TZD */ | |
178 | u8 reserved:6; | |
1da177e4 LT |
179 | }; |
180 | ||
181 | struct acpi_thermal { | |
8348e1b1 | 182 | struct acpi_device * device; |
4be44fcd LB |
183 | acpi_bus_id name; |
184 | unsigned long temperature; | |
185 | unsigned long last_temperature; | |
186 | unsigned long polling_frequency; | |
4be44fcd | 187 | volatile u8 zombie; |
1da177e4 LT |
188 | struct acpi_thermal_flags flags; |
189 | struct acpi_thermal_state state; | |
190 | struct acpi_thermal_trips trips; | |
4be44fcd | 191 | struct acpi_handle_list devices; |
3f655ef8 ZR |
192 | struct thermal_zone_device *thermal_zone; |
193 | int tz_enabled; | |
13614e37 | 194 | int kelvin_offset; |
6e215785 | 195 | struct mutex lock; |
1da177e4 LT |
196 | }; |
197 | ||
43d9f87b ZR |
198 | #ifdef CONFIG_ACPI_PROCFS |
199 | static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file); | |
200 | static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file); | |
201 | static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file); | |
202 | static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file); | |
203 | static ssize_t acpi_thermal_write_cooling_mode(struct file *, | |
204 | const char __user *, size_t, | |
205 | loff_t *); | |
206 | static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file); | |
207 | static ssize_t acpi_thermal_write_polling(struct file *, const char __user *, | |
208 | size_t, loff_t *); | |
209 | ||
d7508032 | 210 | static const struct file_operations acpi_thermal_state_fops = { |
cf7acfab | 211 | .owner = THIS_MODULE, |
4be44fcd LB |
212 | .open = acpi_thermal_state_open_fs, |
213 | .read = seq_read, | |
214 | .llseek = seq_lseek, | |
215 | .release = single_release, | |
1da177e4 LT |
216 | }; |
217 | ||
d7508032 | 218 | static const struct file_operations acpi_thermal_temp_fops = { |
cf7acfab | 219 | .owner = THIS_MODULE, |
4be44fcd LB |
220 | .open = acpi_thermal_temp_open_fs, |
221 | .read = seq_read, | |
222 | .llseek = seq_lseek, | |
223 | .release = single_release, | |
1da177e4 LT |
224 | }; |
225 | ||
d7508032 | 226 | static const struct file_operations acpi_thermal_trip_fops = { |
cf7acfab | 227 | .owner = THIS_MODULE, |
4be44fcd LB |
228 | .open = acpi_thermal_trip_open_fs, |
229 | .read = seq_read, | |
4be44fcd LB |
230 | .llseek = seq_lseek, |
231 | .release = single_release, | |
1da177e4 LT |
232 | }; |
233 | ||
d7508032 | 234 | static const struct file_operations acpi_thermal_cooling_fops = { |
cf7acfab | 235 | .owner = THIS_MODULE, |
4be44fcd LB |
236 | .open = acpi_thermal_cooling_open_fs, |
237 | .read = seq_read, | |
238 | .write = acpi_thermal_write_cooling_mode, | |
239 | .llseek = seq_lseek, | |
240 | .release = single_release, | |
1da177e4 LT |
241 | }; |
242 | ||
d7508032 | 243 | static const struct file_operations acpi_thermal_polling_fops = { |
cf7acfab | 244 | .owner = THIS_MODULE, |
4be44fcd LB |
245 | .open = acpi_thermal_polling_open_fs, |
246 | .read = seq_read, | |
247 | .write = acpi_thermal_write_polling, | |
248 | .llseek = seq_lseek, | |
249 | .release = single_release, | |
1da177e4 | 250 | }; |
43d9f87b | 251 | #endif /* CONFIG_ACPI_PROCFS*/ |
1da177e4 LT |
252 | |
253 | /* -------------------------------------------------------------------------- | |
254 | Thermal Zone Management | |
255 | -------------------------------------------------------------------------- */ | |
256 | ||
4be44fcd | 257 | static int acpi_thermal_get_temperature(struct acpi_thermal *tz) |
1da177e4 | 258 | { |
4be44fcd | 259 | acpi_status status = AE_OK; |
27663c58 | 260 | unsigned long long tmp; |
1da177e4 LT |
261 | |
262 | if (!tz) | |
d550d98d | 263 | return -EINVAL; |
1da177e4 LT |
264 | |
265 | tz->last_temperature = tz->temperature; | |
266 | ||
27663c58 | 267 | status = acpi_evaluate_integer(tz->device->handle, "_TMP", NULL, &tmp); |
1da177e4 | 268 | if (ACPI_FAILURE(status)) |
d550d98d | 269 | return -ENODEV; |
1da177e4 | 270 | |
27663c58 | 271 | tz->temperature = tmp; |
4be44fcd LB |
272 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Temperature is %lu dK\n", |
273 | tz->temperature)); | |
1da177e4 | 274 | |
d550d98d | 275 | return 0; |
1da177e4 LT |
276 | } |
277 | ||
4be44fcd | 278 | static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz) |
1da177e4 | 279 | { |
4be44fcd | 280 | acpi_status status = AE_OK; |
27663c58 | 281 | unsigned long long tmp; |
1da177e4 LT |
282 | |
283 | if (!tz) | |
d550d98d | 284 | return -EINVAL; |
1da177e4 | 285 | |
27663c58 | 286 | status = acpi_evaluate_integer(tz->device->handle, "_TZP", NULL, &tmp); |
1da177e4 | 287 | if (ACPI_FAILURE(status)) |
d550d98d | 288 | return -ENODEV; |
1da177e4 | 289 | |
27663c58 | 290 | tz->polling_frequency = tmp; |
4be44fcd LB |
291 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Polling frequency is %lu dS\n", |
292 | tz->polling_frequency)); | |
1da177e4 | 293 | |
d550d98d | 294 | return 0; |
1da177e4 LT |
295 | } |
296 | ||
4be44fcd | 297 | static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode) |
1da177e4 | 298 | { |
4be44fcd LB |
299 | acpi_status status = AE_OK; |
300 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; | |
301 | struct acpi_object_list arg_list = { 1, &arg0 }; | |
302 | acpi_handle handle = NULL; | |
1da177e4 | 303 | |
1da177e4 LT |
304 | |
305 | if (!tz) | |
d550d98d | 306 | return -EINVAL; |
1da177e4 | 307 | |
38ba7c9e | 308 | status = acpi_get_handle(tz->device->handle, "_SCP", &handle); |
1da177e4 LT |
309 | if (ACPI_FAILURE(status)) { |
310 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n")); | |
d550d98d | 311 | return -ENODEV; |
1da177e4 LT |
312 | } |
313 | ||
314 | arg0.integer.value = mode; | |
315 | ||
316 | status = acpi_evaluate_object(handle, NULL, &arg_list, NULL); | |
317 | if (ACPI_FAILURE(status)) | |
d550d98d | 318 | return -ENODEV; |
1da177e4 | 319 | |
d550d98d | 320 | return 0; |
1da177e4 LT |
321 | } |
322 | ||
ce44e197 ZR |
323 | #define ACPI_TRIPS_CRITICAL 0x01 |
324 | #define ACPI_TRIPS_HOT 0x02 | |
325 | #define ACPI_TRIPS_PASSIVE 0x04 | |
326 | #define ACPI_TRIPS_ACTIVE 0x08 | |
327 | #define ACPI_TRIPS_DEVICES 0x10 | |
1da177e4 | 328 | |
ce44e197 ZR |
329 | #define ACPI_TRIPS_REFRESH_THRESHOLDS (ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE) |
330 | #define ACPI_TRIPS_REFRESH_DEVICES ACPI_TRIPS_DEVICES | |
1da177e4 | 331 | |
ce44e197 ZR |
332 | #define ACPI_TRIPS_INIT (ACPI_TRIPS_CRITICAL | ACPI_TRIPS_HOT | \ |
333 | ACPI_TRIPS_PASSIVE | ACPI_TRIPS_ACTIVE | \ | |
334 | ACPI_TRIPS_DEVICES) | |
1da177e4 | 335 | |
ce44e197 ZR |
336 | /* |
337 | * This exception is thrown out in two cases: | |
338 | * 1.An invalid trip point becomes invalid or a valid trip point becomes invalid | |
339 | * when re-evaluating the AML code. | |
340 | * 2.TODO: Devices listed in _PSL, _ALx, _TZD may change. | |
341 | * We need to re-bind the cooling devices of a thermal zone when this occurs. | |
342 | */ | |
343 | #define ACPI_THERMAL_TRIPS_EXCEPTION(flags, str) \ | |
344 | do { \ | |
345 | if (flags != ACPI_TRIPS_INIT) \ | |
346 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, \ | |
347 | "ACPI thermal trip point %s changed\n" \ | |
348 | "Please send acpidump to linux-acpi@vger.kernel.org\n", str)); \ | |
349 | } while (0) | |
350 | ||
351 | static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) | |
352 | { | |
353 | acpi_status status = AE_OK; | |
27663c58 | 354 | unsigned long long tmp; |
ce44e197 ZR |
355 | struct acpi_handle_list devices; |
356 | int valid = 0; | |
357 | int i; | |
1da177e4 | 358 | |
fa809452 | 359 | /* Critical Shutdown */ |
ce44e197 ZR |
360 | if (flag & ACPI_TRIPS_CRITICAL) { |
361 | status = acpi_evaluate_integer(tz->device->handle, | |
27663c58 MW |
362 | "_CRT", NULL, &tmp); |
363 | tz->trips.critical.temperature = tmp; | |
a39a2d7c AV |
364 | /* |
365 | * Treat freezing temperatures as invalid as well; some | |
366 | * BIOSes return really low values and cause reboots at startup. | |
b731d7b6 | 367 | * Below zero (Celsius) values clearly aren't right for sure.. |
a39a2d7c AV |
368 | * ... so lets discard those as invalid. |
369 | */ | |
fa809452 TR |
370 | if (ACPI_FAILURE(status)) { |
371 | tz->trips.critical.flags.valid = 0; | |
372 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
373 | "No critical threshold\n")); | |
374 | } else if (tmp <= 2732) { | |
375 | printk(KERN_WARNING FW_BUG "Invalid critical threshold " | |
376 | "(%llu)\n", tmp); | |
c52a7419 | 377 | tz->trips.critical.flags.valid = 0; |
ce44e197 ZR |
378 | } else { |
379 | tz->trips.critical.flags.valid = 1; | |
380 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
fa809452 TR |
381 | "Found critical threshold [%lu]\n", |
382 | tz->trips.critical.temperature)); | |
ce44e197 ZR |
383 | } |
384 | if (tz->trips.critical.flags.valid == 1) { | |
385 | if (crt == -1) { | |
386 | tz->trips.critical.flags.valid = 0; | |
387 | } else if (crt > 0) { | |
388 | unsigned long crt_k = CELSIUS_TO_KELVIN(crt); | |
389 | /* | |
22a94d79 | 390 | * Allow override critical threshold |
ce44e197 | 391 | */ |
22a94d79 ZR |
392 | if (crt_k > tz->trips.critical.temperature) |
393 | printk(KERN_WARNING PREFIX | |
394 | "Critical threshold %d C\n", crt); | |
395 | tz->trips.critical.temperature = crt_k; | |
ce44e197 | 396 | } |
c52a7419 LB |
397 | } |
398 | } | |
399 | ||
1da177e4 | 400 | /* Critical Sleep (optional) */ |
ce44e197 | 401 | if (flag & ACPI_TRIPS_HOT) { |
a70cdc52 | 402 | status = acpi_evaluate_integer(tz->device->handle, |
27663c58 | 403 | "_HOT", NULL, &tmp); |
ce44e197 ZR |
404 | if (ACPI_FAILURE(status)) { |
405 | tz->trips.hot.flags.valid = 0; | |
406 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
407 | "No hot threshold\n")); | |
408 | } else { | |
27663c58 | 409 | tz->trips.hot.temperature = tmp; |
ce44e197 ZR |
410 | tz->trips.hot.flags.valid = 1; |
411 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
412 | "Found hot threshold [%lu]\n", | |
413 | tz->trips.critical.temperature)); | |
414 | } | |
a70cdc52 LB |
415 | } |
416 | ||
ce44e197 | 417 | /* Passive (optional) */ |
0e4240d9 ZR |
418 | if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips.passive.flags.valid) || |
419 | (flag == ACPI_TRIPS_INIT)) { | |
ce44e197 ZR |
420 | valid = tz->trips.passive.flags.valid; |
421 | if (psv == -1) { | |
422 | status = AE_SUPPORT; | |
423 | } else if (psv > 0) { | |
27663c58 | 424 | tmp = CELSIUS_TO_KELVIN(psv); |
ce44e197 ZR |
425 | status = AE_OK; |
426 | } else { | |
427 | status = acpi_evaluate_integer(tz->device->handle, | |
27663c58 | 428 | "_PSV", NULL, &tmp); |
ce44e197 | 429 | } |
1da177e4 | 430 | |
1da177e4 LT |
431 | if (ACPI_FAILURE(status)) |
432 | tz->trips.passive.flags.valid = 0; | |
ce44e197 | 433 | else { |
27663c58 | 434 | tz->trips.passive.temperature = tmp; |
ce44e197 ZR |
435 | tz->trips.passive.flags.valid = 1; |
436 | if (flag == ACPI_TRIPS_INIT) { | |
437 | status = acpi_evaluate_integer( | |
438 | tz->device->handle, "_TC1", | |
27663c58 | 439 | NULL, &tmp); |
ce44e197 ZR |
440 | if (ACPI_FAILURE(status)) |
441 | tz->trips.passive.flags.valid = 0; | |
27663c58 MW |
442 | else |
443 | tz->trips.passive.tc1 = tmp; | |
ce44e197 ZR |
444 | status = acpi_evaluate_integer( |
445 | tz->device->handle, "_TC2", | |
27663c58 | 446 | NULL, &tmp); |
ce44e197 ZR |
447 | if (ACPI_FAILURE(status)) |
448 | tz->trips.passive.flags.valid = 0; | |
27663c58 MW |
449 | else |
450 | tz->trips.passive.tc2 = tmp; | |
ce44e197 ZR |
451 | status = acpi_evaluate_integer( |
452 | tz->device->handle, "_TSP", | |
27663c58 | 453 | NULL, &tmp); |
ce44e197 ZR |
454 | if (ACPI_FAILURE(status)) |
455 | tz->trips.passive.flags.valid = 0; | |
27663c58 MW |
456 | else |
457 | tz->trips.passive.tsp = tmp; | |
ce44e197 ZR |
458 | } |
459 | } | |
460 | } | |
461 | if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.passive.flags.valid) { | |
462 | memset(&devices, 0, sizeof(struct acpi_handle_list)); | |
463 | status = acpi_evaluate_reference(tz->device->handle, "_PSL", | |
464 | NULL, &devices); | |
0e4240d9 ZR |
465 | if (ACPI_FAILURE(status)) { |
466 | printk(KERN_WARNING PREFIX | |
467 | "Invalid passive threshold\n"); | |
1da177e4 | 468 | tz->trips.passive.flags.valid = 0; |
0e4240d9 | 469 | } |
1da177e4 | 470 | else |
ce44e197 | 471 | tz->trips.passive.flags.valid = 1; |
1da177e4 | 472 | |
ce44e197 ZR |
473 | if (memcmp(&tz->trips.passive.devices, &devices, |
474 | sizeof(struct acpi_handle_list))) { | |
475 | memcpy(&tz->trips.passive.devices, &devices, | |
476 | sizeof(struct acpi_handle_list)); | |
477 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); | |
478 | } | |
479 | } | |
480 | if ((flag & ACPI_TRIPS_PASSIVE) || (flag & ACPI_TRIPS_DEVICES)) { | |
481 | if (valid != tz->trips.passive.flags.valid) | |
482 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "state"); | |
483 | } | |
1da177e4 | 484 | |
ce44e197 | 485 | /* Active (optional) */ |
4be44fcd | 486 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { |
4be44fcd | 487 | char name[5] = { '_', 'A', 'C', ('0' + i), '\0' }; |
ce44e197 | 488 | valid = tz->trips.active[i].flags.valid; |
1da177e4 | 489 | |
f8707ec9 | 490 | if (act == -1) |
ce44e197 ZR |
491 | break; /* disable all active trip points */ |
492 | ||
0e4240d9 ZR |
493 | if ((flag == ACPI_TRIPS_INIT) || ((flag & ACPI_TRIPS_ACTIVE) && |
494 | tz->trips.active[i].flags.valid)) { | |
ce44e197 | 495 | status = acpi_evaluate_integer(tz->device->handle, |
27663c58 | 496 | name, NULL, &tmp); |
ce44e197 ZR |
497 | if (ACPI_FAILURE(status)) { |
498 | tz->trips.active[i].flags.valid = 0; | |
499 | if (i == 0) | |
500 | break; | |
501 | if (act <= 0) | |
502 | break; | |
503 | if (i == 1) | |
504 | tz->trips.active[0].temperature = | |
505 | CELSIUS_TO_KELVIN(act); | |
506 | else | |
507 | /* | |
508 | * Don't allow override higher than | |
509 | * the next higher trip point | |
510 | */ | |
511 | tz->trips.active[i - 1].temperature = | |
512 | (tz->trips.active[i - 2].temperature < | |
513 | CELSIUS_TO_KELVIN(act) ? | |
514 | tz->trips.active[i - 2].temperature : | |
515 | CELSIUS_TO_KELVIN(act)); | |
f8707ec9 | 516 | break; |
27663c58 MW |
517 | } else { |
518 | tz->trips.active[i].temperature = tmp; | |
ce44e197 | 519 | tz->trips.active[i].flags.valid = 1; |
27663c58 | 520 | } |
f8707ec9 | 521 | } |
1da177e4 LT |
522 | |
523 | name[2] = 'L'; | |
ce44e197 ZR |
524 | if ((flag & ACPI_TRIPS_DEVICES) && tz->trips.active[i].flags.valid ) { |
525 | memset(&devices, 0, sizeof(struct acpi_handle_list)); | |
526 | status = acpi_evaluate_reference(tz->device->handle, | |
527 | name, NULL, &devices); | |
0e4240d9 ZR |
528 | if (ACPI_FAILURE(status)) { |
529 | printk(KERN_WARNING PREFIX | |
530 | "Invalid active%d threshold\n", i); | |
ce44e197 | 531 | tz->trips.active[i].flags.valid = 0; |
0e4240d9 | 532 | } |
ce44e197 ZR |
533 | else |
534 | tz->trips.active[i].flags.valid = 1; | |
535 | ||
536 | if (memcmp(&tz->trips.active[i].devices, &devices, | |
537 | sizeof(struct acpi_handle_list))) { | |
538 | memcpy(&tz->trips.active[i].devices, &devices, | |
539 | sizeof(struct acpi_handle_list)); | |
540 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); | |
541 | } | |
542 | } | |
543 | if ((flag & ACPI_TRIPS_ACTIVE) || (flag & ACPI_TRIPS_DEVICES)) | |
544 | if (valid != tz->trips.active[i].flags.valid) | |
545 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "state"); | |
546 | ||
547 | if (!tz->trips.active[i].flags.valid) | |
548 | break; | |
549 | } | |
550 | ||
551 | if (flag & ACPI_TRIPS_DEVICES) { | |
552 | memset(&devices, 0, sizeof(struct acpi_handle_list)); | |
553 | status = acpi_evaluate_reference(tz->device->handle, "_TZD", | |
554 | NULL, &devices); | |
555 | if (memcmp(&tz->devices, &devices, | |
556 | sizeof(struct acpi_handle_list))) { | |
557 | memcpy(&tz->devices, &devices, | |
558 | sizeof(struct acpi_handle_list)); | |
559 | ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); | |
560 | } | |
1da177e4 LT |
561 | } |
562 | ||
d550d98d | 563 | return 0; |
1da177e4 LT |
564 | } |
565 | ||
ce44e197 | 566 | static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) |
1da177e4 | 567 | { |
8b7ef6d8 TR |
568 | int i, valid, ret = acpi_thermal_trips_update(tz, ACPI_TRIPS_INIT); |
569 | ||
570 | if (ret) | |
571 | return ret; | |
572 | ||
573 | valid = tz->trips.critical.flags.valid | | |
574 | tz->trips.hot.flags.valid | | |
575 | tz->trips.passive.flags.valid; | |
576 | ||
577 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) | |
578 | valid |= tz->trips.active[i].flags.valid; | |
579 | ||
580 | if (!valid) { | |
581 | printk(KERN_WARNING FW_BUG "No valid trip found\n"); | |
582 | return -ENODEV; | |
583 | } | |
584 | return 0; | |
1da177e4 LT |
585 | } |
586 | ||
4be44fcd | 587 | static void acpi_thermal_check(void *data) |
1da177e4 | 588 | { |
50dd0969 | 589 | struct acpi_thermal *tz = data; |
1da177e4 | 590 | |
b1569e99 | 591 | thermal_zone_device_update(tz->thermal_zone); |
1da177e4 LT |
592 | } |
593 | ||
3f655ef8 | 594 | /* sys I/F for generic thermal sysfs support */ |
13614e37 | 595 | #define KELVIN_TO_MILLICELSIUS(t, off) (((t) - (off)) * 100) |
5e012760 | 596 | |
6503e5df MG |
597 | static int thermal_get_temp(struct thermal_zone_device *thermal, |
598 | unsigned long *temp) | |
3f655ef8 ZR |
599 | { |
600 | struct acpi_thermal *tz = thermal->devdata; | |
76ecb4f2 | 601 | int result; |
3f655ef8 ZR |
602 | |
603 | if (!tz) | |
604 | return -EINVAL; | |
605 | ||
76ecb4f2 ZR |
606 | result = acpi_thermal_get_temperature(tz); |
607 | if (result) | |
608 | return result; | |
609 | ||
13614e37 | 610 | *temp = KELVIN_TO_MILLICELSIUS(tz->temperature, tz->kelvin_offset); |
6503e5df | 611 | return 0; |
3f655ef8 ZR |
612 | } |
613 | ||
614 | static const char enabled[] = "kernel"; | |
615 | static const char disabled[] = "user"; | |
616 | static int thermal_get_mode(struct thermal_zone_device *thermal, | |
6503e5df | 617 | enum thermal_device_mode *mode) |
3f655ef8 ZR |
618 | { |
619 | struct acpi_thermal *tz = thermal->devdata; | |
620 | ||
621 | if (!tz) | |
622 | return -EINVAL; | |
623 | ||
6503e5df MG |
624 | *mode = tz->tz_enabled ? THERMAL_DEVICE_ENABLED : |
625 | THERMAL_DEVICE_DISABLED; | |
626 | ||
627 | return 0; | |
3f655ef8 ZR |
628 | } |
629 | ||
630 | static int thermal_set_mode(struct thermal_zone_device *thermal, | |
6503e5df | 631 | enum thermal_device_mode mode) |
3f655ef8 ZR |
632 | { |
633 | struct acpi_thermal *tz = thermal->devdata; | |
634 | int enable; | |
635 | ||
636 | if (!tz) | |
637 | return -EINVAL; | |
638 | ||
639 | /* | |
640 | * enable/disable thermal management from ACPI thermal driver | |
641 | */ | |
6503e5df | 642 | if (mode == THERMAL_DEVICE_ENABLED) |
3f655ef8 | 643 | enable = 1; |
6503e5df | 644 | else if (mode == THERMAL_DEVICE_DISABLED) |
3f655ef8 ZR |
645 | enable = 0; |
646 | else | |
647 | return -EINVAL; | |
648 | ||
649 | if (enable != tz->tz_enabled) { | |
650 | tz->tz_enabled = enable; | |
651 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
652 | "%s ACPI thermal control\n", | |
653 | tz->tz_enabled ? enabled : disabled)); | |
654 | acpi_thermal_check(tz); | |
655 | } | |
656 | return 0; | |
657 | } | |
658 | ||
659 | static int thermal_get_trip_type(struct thermal_zone_device *thermal, | |
6503e5df | 660 | int trip, enum thermal_trip_type *type) |
3f655ef8 ZR |
661 | { |
662 | struct acpi_thermal *tz = thermal->devdata; | |
663 | int i; | |
664 | ||
665 | if (!tz || trip < 0) | |
666 | return -EINVAL; | |
667 | ||
668 | if (tz->trips.critical.flags.valid) { | |
6503e5df MG |
669 | if (!trip) { |
670 | *type = THERMAL_TRIP_CRITICAL; | |
671 | return 0; | |
672 | } | |
3f655ef8 ZR |
673 | trip--; |
674 | } | |
675 | ||
676 | if (tz->trips.hot.flags.valid) { | |
6503e5df MG |
677 | if (!trip) { |
678 | *type = THERMAL_TRIP_HOT; | |
679 | return 0; | |
680 | } | |
3f655ef8 ZR |
681 | trip--; |
682 | } | |
683 | ||
684 | if (tz->trips.passive.flags.valid) { | |
6503e5df MG |
685 | if (!trip) { |
686 | *type = THERMAL_TRIP_PASSIVE; | |
687 | return 0; | |
688 | } | |
3f655ef8 ZR |
689 | trip--; |
690 | } | |
691 | ||
692 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && | |
693 | tz->trips.active[i].flags.valid; i++) { | |
6503e5df MG |
694 | if (!trip) { |
695 | *type = THERMAL_TRIP_ACTIVE; | |
696 | return 0; | |
697 | } | |
3f655ef8 ZR |
698 | trip--; |
699 | } | |
700 | ||
701 | return -EINVAL; | |
702 | } | |
703 | ||
704 | static int thermal_get_trip_temp(struct thermal_zone_device *thermal, | |
6503e5df | 705 | int trip, unsigned long *temp) |
3f655ef8 ZR |
706 | { |
707 | struct acpi_thermal *tz = thermal->devdata; | |
708 | int i; | |
709 | ||
710 | if (!tz || trip < 0) | |
711 | return -EINVAL; | |
712 | ||
713 | if (tz->trips.critical.flags.valid) { | |
6503e5df MG |
714 | if (!trip) { |
715 | *temp = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
716 | tz->trips.critical.temperature, |
717 | tz->kelvin_offset); | |
6503e5df MG |
718 | return 0; |
719 | } | |
3f655ef8 ZR |
720 | trip--; |
721 | } | |
722 | ||
723 | if (tz->trips.hot.flags.valid) { | |
6503e5df MG |
724 | if (!trip) { |
725 | *temp = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
726 | tz->trips.hot.temperature, |
727 | tz->kelvin_offset); | |
6503e5df MG |
728 | return 0; |
729 | } | |
3f655ef8 ZR |
730 | trip--; |
731 | } | |
732 | ||
733 | if (tz->trips.passive.flags.valid) { | |
6503e5df MG |
734 | if (!trip) { |
735 | *temp = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
736 | tz->trips.passive.temperature, |
737 | tz->kelvin_offset); | |
6503e5df MG |
738 | return 0; |
739 | } | |
3f655ef8 ZR |
740 | trip--; |
741 | } | |
742 | ||
743 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && | |
744 | tz->trips.active[i].flags.valid; i++) { | |
6503e5df MG |
745 | if (!trip) { |
746 | *temp = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
747 | tz->trips.active[i].temperature, |
748 | tz->kelvin_offset); | |
6503e5df MG |
749 | return 0; |
750 | } | |
3f655ef8 ZR |
751 | trip--; |
752 | } | |
753 | ||
754 | return -EINVAL; | |
755 | } | |
756 | ||
9ec732ff ZR |
757 | static int thermal_get_crit_temp(struct thermal_zone_device *thermal, |
758 | unsigned long *temperature) { | |
759 | struct acpi_thermal *tz = thermal->devdata; | |
760 | ||
761 | if (tz->trips.critical.flags.valid) { | |
762 | *temperature = KELVIN_TO_MILLICELSIUS( | |
13614e37 JD |
763 | tz->trips.critical.temperature, |
764 | tz->kelvin_offset); | |
9ec732ff ZR |
765 | return 0; |
766 | } else | |
767 | return -EINVAL; | |
768 | } | |
769 | ||
b1569e99 MG |
770 | static int thermal_notify(struct thermal_zone_device *thermal, int trip, |
771 | enum thermal_trip_type trip_type) | |
772 | { | |
773 | u8 type = 0; | |
774 | struct acpi_thermal *tz = thermal->devdata; | |
775 | ||
776 | if (trip_type == THERMAL_TRIP_CRITICAL) | |
777 | type = ACPI_THERMAL_NOTIFY_CRITICAL; | |
778 | else if (trip_type == THERMAL_TRIP_HOT) | |
779 | type = ACPI_THERMAL_NOTIFY_HOT; | |
780 | else | |
781 | return 0; | |
782 | ||
783 | acpi_bus_generate_proc_event(tz->device, type, 1); | |
784 | acpi_bus_generate_netlink_event(tz->device->pnp.device_class, | |
f6f5c45e | 785 | dev_name(&tz->device->dev), type, 1); |
b1569e99 MG |
786 | |
787 | if (trip_type == THERMAL_TRIP_CRITICAL && nocrt) | |
788 | return 1; | |
789 | ||
790 | return 0; | |
791 | } | |
792 | ||
3f655ef8 ZR |
793 | typedef int (*cb)(struct thermal_zone_device *, int, |
794 | struct thermal_cooling_device *); | |
795 | static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, | |
796 | struct thermal_cooling_device *cdev, | |
797 | cb action) | |
798 | { | |
799 | struct acpi_device *device = cdev->devdata; | |
800 | struct acpi_thermal *tz = thermal->devdata; | |
653a00c9 ZR |
801 | struct acpi_device *dev; |
802 | acpi_status status; | |
803 | acpi_handle handle; | |
3f655ef8 ZR |
804 | int i; |
805 | int j; | |
806 | int trip = -1; | |
807 | int result = 0; | |
808 | ||
809 | if (tz->trips.critical.flags.valid) | |
810 | trip++; | |
811 | ||
812 | if (tz->trips.hot.flags.valid) | |
813 | trip++; | |
814 | ||
815 | if (tz->trips.passive.flags.valid) { | |
816 | trip++; | |
817 | for (i = 0; i < tz->trips.passive.devices.count; | |
818 | i++) { | |
653a00c9 ZR |
819 | handle = tz->trips.passive.devices.handles[i]; |
820 | status = acpi_bus_get_device(handle, &dev); | |
821 | if (ACPI_SUCCESS(status) && (dev == device)) { | |
822 | result = action(thermal, trip, cdev); | |
823 | if (result) | |
824 | goto failed; | |
825 | } | |
3f655ef8 ZR |
826 | } |
827 | } | |
828 | ||
829 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { | |
830 | if (!tz->trips.active[i].flags.valid) | |
831 | break; | |
832 | trip++; | |
833 | for (j = 0; | |
834 | j < tz->trips.active[i].devices.count; | |
835 | j++) { | |
653a00c9 ZR |
836 | handle = tz->trips.active[i].devices.handles[j]; |
837 | status = acpi_bus_get_device(handle, &dev); | |
838 | if (ACPI_SUCCESS(status) && (dev == device)) { | |
839 | result = action(thermal, trip, cdev); | |
840 | if (result) | |
841 | goto failed; | |
842 | } | |
3f655ef8 ZR |
843 | } |
844 | } | |
845 | ||
846 | for (i = 0; i < tz->devices.count; i++) { | |
653a00c9 ZR |
847 | handle = tz->devices.handles[i]; |
848 | status = acpi_bus_get_device(handle, &dev); | |
849 | if (ACPI_SUCCESS(status) && (dev == device)) { | |
850 | result = action(thermal, -1, cdev); | |
851 | if (result) | |
852 | goto failed; | |
853 | } | |
3f655ef8 ZR |
854 | } |
855 | ||
856 | failed: | |
857 | return result; | |
858 | } | |
859 | ||
860 | static int | |
861 | acpi_thermal_bind_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_bind_cooling_device); | |
866 | } | |
867 | ||
868 | static int | |
869 | acpi_thermal_unbind_cooling_device(struct thermal_zone_device *thermal, | |
870 | struct thermal_cooling_device *cdev) | |
871 | { | |
872 | return acpi_thermal_cooling_device_cb(thermal, cdev, | |
873 | thermal_zone_unbind_cooling_device); | |
874 | } | |
875 | ||
876 | static struct thermal_zone_device_ops acpi_thermal_zone_ops = { | |
877 | .bind = acpi_thermal_bind_cooling_device, | |
878 | .unbind = acpi_thermal_unbind_cooling_device, | |
879 | .get_temp = thermal_get_temp, | |
880 | .get_mode = thermal_get_mode, | |
881 | .set_mode = thermal_set_mode, | |
882 | .get_trip_type = thermal_get_trip_type, | |
883 | .get_trip_temp = thermal_get_trip_temp, | |
9ec732ff | 884 | .get_crit_temp = thermal_get_crit_temp, |
b1569e99 | 885 | .notify = thermal_notify, |
3f655ef8 ZR |
886 | }; |
887 | ||
888 | static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz) | |
889 | { | |
890 | int trips = 0; | |
891 | int result; | |
20733939 | 892 | acpi_status status; |
3f655ef8 ZR |
893 | int i; |
894 | ||
895 | if (tz->trips.critical.flags.valid) | |
896 | trips++; | |
897 | ||
898 | if (tz->trips.hot.flags.valid) | |
899 | trips++; | |
900 | ||
901 | if (tz->trips.passive.flags.valid) | |
902 | trips++; | |
903 | ||
904 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && | |
905 | tz->trips.active[i].flags.valid; i++, trips++); | |
b1569e99 MG |
906 | |
907 | if (tz->trips.passive.flags.valid) | |
908 | tz->thermal_zone = | |
909 | thermal_zone_device_register("acpitz", trips, tz, | |
910 | &acpi_thermal_zone_ops, | |
911 | tz->trips.passive.tc1, | |
912 | tz->trips.passive.tc2, | |
913 | tz->trips.passive.tsp*100, | |
914 | tz->polling_frequency*100); | |
915 | else | |
916 | tz->thermal_zone = | |
917 | thermal_zone_device_register("acpitz", trips, tz, | |
918 | &acpi_thermal_zone_ops, | |
919 | 0, 0, 0, | |
67405439 | 920 | tz->polling_frequency*100); |
bb070e43 | 921 | if (IS_ERR(tz->thermal_zone)) |
3f655ef8 ZR |
922 | return -ENODEV; |
923 | ||
924 | result = sysfs_create_link(&tz->device->dev.kobj, | |
925 | &tz->thermal_zone->device.kobj, "thermal_zone"); | |
926 | if (result) | |
927 | return result; | |
928 | ||
929 | result = sysfs_create_link(&tz->thermal_zone->device.kobj, | |
930 | &tz->device->dev.kobj, "device"); | |
931 | if (result) | |
932 | return result; | |
933 | ||
20733939 ZR |
934 | status = acpi_attach_data(tz->device->handle, |
935 | acpi_bus_private_data_handler, | |
936 | tz->thermal_zone); | |
937 | if (ACPI_FAILURE(status)) { | |
55ac9a01 LM |
938 | printk(KERN_ERR PREFIX |
939 | "Error attaching device data\n"); | |
20733939 ZR |
940 | return -ENODEV; |
941 | } | |
942 | ||
3f655ef8 ZR |
943 | tz->tz_enabled = 1; |
944 | ||
fc3a8828 GKH |
945 | dev_info(&tz->device->dev, "registered as thermal_zone%d\n", |
946 | tz->thermal_zone->id); | |
3f655ef8 ZR |
947 | return 0; |
948 | } | |
949 | ||
950 | static void acpi_thermal_unregister_thermal_zone(struct acpi_thermal *tz) | |
951 | { | |
952 | sysfs_remove_link(&tz->device->dev.kobj, "thermal_zone"); | |
953 | sysfs_remove_link(&tz->thermal_zone->device.kobj, "device"); | |
954 | thermal_zone_device_unregister(tz->thermal_zone); | |
955 | tz->thermal_zone = NULL; | |
20733939 | 956 | acpi_detach_data(tz->device->handle, acpi_bus_private_data_handler); |
3f655ef8 ZR |
957 | } |
958 | ||
959 | ||
1da177e4 LT |
960 | /* -------------------------------------------------------------------------- |
961 | FS Interface (/proc) | |
962 | -------------------------------------------------------------------------- */ | |
43d9f87b | 963 | #ifdef CONFIG_ACPI_PROCFS |
4be44fcd | 964 | static struct proc_dir_entry *acpi_thermal_dir; |
1da177e4 LT |
965 | |
966 | static int acpi_thermal_state_seq_show(struct seq_file *seq, void *offset) | |
967 | { | |
50dd0969 | 968 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 969 | |
1da177e4 LT |
970 | |
971 | if (!tz) | |
972 | goto end; | |
973 | ||
974 | seq_puts(seq, "state: "); | |
975 | ||
4be44fcd LB |
976 | if (!tz->state.critical && !tz->state.hot && !tz->state.passive |
977 | && !tz->state.active) | |
1da177e4 LT |
978 | seq_puts(seq, "ok\n"); |
979 | else { | |
980 | if (tz->state.critical) | |
981 | seq_puts(seq, "critical "); | |
982 | if (tz->state.hot) | |
983 | seq_puts(seq, "hot "); | |
984 | if (tz->state.passive) | |
985 | seq_puts(seq, "passive "); | |
986 | if (tz->state.active) | |
987 | seq_printf(seq, "active[%d]", tz->state.active_index); | |
988 | seq_puts(seq, "\n"); | |
989 | } | |
990 | ||
4be44fcd | 991 | end: |
d550d98d | 992 | return 0; |
1da177e4 LT |
993 | } |
994 | ||
995 | static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file) | |
996 | { | |
997 | return single_open(file, acpi_thermal_state_seq_show, PDE(inode)->data); | |
998 | } | |
999 | ||
1da177e4 LT |
1000 | static int acpi_thermal_temp_seq_show(struct seq_file *seq, void *offset) |
1001 | { | |
4be44fcd | 1002 | int result = 0; |
50dd0969 | 1003 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 1004 | |
1da177e4 LT |
1005 | |
1006 | if (!tz) | |
1007 | goto end; | |
1008 | ||
1009 | result = acpi_thermal_get_temperature(tz); | |
1010 | if (result) | |
1011 | goto end; | |
1012 | ||
4be44fcd LB |
1013 | seq_printf(seq, "temperature: %ld C\n", |
1014 | KELVIN_TO_CELSIUS(tz->temperature)); | |
1da177e4 | 1015 | |
4be44fcd | 1016 | end: |
d550d98d | 1017 | return 0; |
1da177e4 LT |
1018 | } |
1019 | ||
1020 | static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file) | |
1021 | { | |
1022 | return single_open(file, acpi_thermal_temp_seq_show, PDE(inode)->data); | |
1023 | } | |
1024 | ||
1da177e4 LT |
1025 | static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset) |
1026 | { | |
50dd0969 | 1027 | struct acpi_thermal *tz = seq->private; |
68ccfaa8 | 1028 | struct acpi_device *device; |
e7c746ef TR |
1029 | acpi_status status; |
1030 | ||
4be44fcd LB |
1031 | int i = 0; |
1032 | int j = 0; | |
1da177e4 | 1033 | |
1da177e4 LT |
1034 | |
1035 | if (!tz) | |
1036 | goto end; | |
1037 | ||
1038 | if (tz->trips.critical.flags.valid) | |
f5487145 LB |
1039 | seq_printf(seq, "critical (S5): %ld C%s", |
1040 | KELVIN_TO_CELSIUS(tz->trips.critical.temperature), | |
1041 | nocrt ? " <disabled>\n" : "\n"); | |
1da177e4 LT |
1042 | |
1043 | if (tz->trips.hot.flags.valid) | |
f5487145 LB |
1044 | seq_printf(seq, "hot (S4): %ld C%s", |
1045 | KELVIN_TO_CELSIUS(tz->trips.hot.temperature), | |
1046 | nocrt ? " <disabled>\n" : "\n"); | |
1da177e4 LT |
1047 | |
1048 | if (tz->trips.passive.flags.valid) { | |
4be44fcd LB |
1049 | seq_printf(seq, |
1050 | "passive: %ld C: tc1=%lu tc2=%lu tsp=%lu devices=", | |
1051 | KELVIN_TO_CELSIUS(tz->trips.passive.temperature), | |
1052 | tz->trips.passive.tc1, tz->trips.passive.tc2, | |
1053 | tz->trips.passive.tsp); | |
1054 | for (j = 0; j < tz->trips.passive.devices.count; j++) { | |
e7c746ef TR |
1055 | status = acpi_bus_get_device(tz->trips.passive.devices. |
1056 | handles[j], &device); | |
1057 | seq_printf(seq, "%4.4s ", status ? "" : | |
1058 | acpi_device_bid(device)); | |
1da177e4 LT |
1059 | } |
1060 | seq_puts(seq, "\n"); | |
7fb2616e FP |
1061 | } else { |
1062 | seq_printf(seq, "passive (forced):"); | |
1063 | if (tz->thermal_zone->forced_passive) | |
1064 | seq_printf(seq, " %i C\n", | |
1065 | tz->thermal_zone->forced_passive / 1000); | |
1066 | else | |
1067 | seq_printf(seq, "<not set>\n"); | |
1da177e4 LT |
1068 | } |
1069 | ||
1070 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { | |
1071 | if (!(tz->trips.active[i].flags.valid)) | |
1072 | break; | |
1073 | seq_printf(seq, "active[%d]: %ld C: devices=", | |
4be44fcd LB |
1074 | i, |
1075 | KELVIN_TO_CELSIUS(tz->trips.active[i].temperature)); | |
68ccfaa8 | 1076 | for (j = 0; j < tz->trips.active[i].devices.count; j++){ |
e7c746ef TR |
1077 | status = acpi_bus_get_device(tz->trips.active[i]. |
1078 | devices.handles[j], | |
1079 | &device); | |
1080 | seq_printf(seq, "%4.4s ", status ? "" : | |
1081 | acpi_device_bid(device)); | |
68ccfaa8 | 1082 | } |
1da177e4 LT |
1083 | seq_puts(seq, "\n"); |
1084 | } | |
1085 | ||
4be44fcd | 1086 | end: |
d550d98d | 1087 | return 0; |
1da177e4 LT |
1088 | } |
1089 | ||
1090 | static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file) | |
1091 | { | |
1092 | return single_open(file, acpi_thermal_trip_seq_show, PDE(inode)->data); | |
1093 | } | |
1094 | ||
1da177e4 LT |
1095 | static int acpi_thermal_cooling_seq_show(struct seq_file *seq, void *offset) |
1096 | { | |
50dd0969 | 1097 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 1098 | |
1da177e4 LT |
1099 | |
1100 | if (!tz) | |
1101 | goto end; | |
1102 | ||
eaca2d3f | 1103 | if (!tz->flags.cooling_mode) |
1da177e4 | 1104 | seq_puts(seq, "<setting not supported>\n"); |
1da177e4 | 1105 | else |
eaca2d3f | 1106 | seq_puts(seq, "0 - Active; 1 - Passive\n"); |
1da177e4 | 1107 | |
4be44fcd | 1108 | end: |
d550d98d | 1109 | return 0; |
1da177e4 LT |
1110 | } |
1111 | ||
1112 | static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file) | |
1113 | { | |
1114 | return single_open(file, acpi_thermal_cooling_seq_show, | |
4be44fcd | 1115 | PDE(inode)->data); |
1da177e4 LT |
1116 | } |
1117 | ||
1118 | static ssize_t | |
4be44fcd LB |
1119 | acpi_thermal_write_cooling_mode(struct file *file, |
1120 | const char __user * buffer, | |
1121 | size_t count, loff_t * ppos) | |
1da177e4 | 1122 | { |
50dd0969 JE |
1123 | struct seq_file *m = file->private_data; |
1124 | struct acpi_thermal *tz = m->private; | |
4be44fcd LB |
1125 | int result = 0; |
1126 | char mode_string[12] = { '\0' }; | |
1da177e4 | 1127 | |
1da177e4 LT |
1128 | |
1129 | if (!tz || (count > sizeof(mode_string) - 1)) | |
d550d98d | 1130 | return -EINVAL; |
1da177e4 LT |
1131 | |
1132 | if (!tz->flags.cooling_mode) | |
d550d98d | 1133 | return -ENODEV; |
1da177e4 LT |
1134 | |
1135 | if (copy_from_user(mode_string, buffer, count)) | |
d550d98d | 1136 | return -EFAULT; |
4be44fcd | 1137 | |
1da177e4 | 1138 | mode_string[count] = '\0'; |
4be44fcd LB |
1139 | |
1140 | result = acpi_thermal_set_cooling_mode(tz, | |
1141 | simple_strtoul(mode_string, NULL, | |
1142 | 0)); | |
1da177e4 | 1143 | if (result) |
d550d98d | 1144 | return result; |
1da177e4 LT |
1145 | |
1146 | acpi_thermal_check(tz); | |
1147 | ||
d550d98d | 1148 | return count; |
1da177e4 LT |
1149 | } |
1150 | ||
1da177e4 LT |
1151 | static int acpi_thermal_polling_seq_show(struct seq_file *seq, void *offset) |
1152 | { | |
50dd0969 | 1153 | struct acpi_thermal *tz = seq->private; |
1da177e4 | 1154 | |
1da177e4 LT |
1155 | |
1156 | if (!tz) | |
1157 | goto end; | |
1158 | ||
b1569e99 | 1159 | if (!tz->thermal_zone->polling_delay) { |
1da177e4 LT |
1160 | seq_puts(seq, "<polling disabled>\n"); |
1161 | goto end; | |
1162 | } | |
1163 | ||
b1569e99 MG |
1164 | seq_printf(seq, "polling frequency: %d seconds\n", |
1165 | (tz->thermal_zone->polling_delay / 1000)); | |
1da177e4 | 1166 | |
4be44fcd | 1167 | end: |
d550d98d | 1168 | return 0; |
1da177e4 LT |
1169 | } |
1170 | ||
1171 | static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file) | |
1172 | { | |
1173 | return single_open(file, acpi_thermal_polling_seq_show, | |
4be44fcd | 1174 | PDE(inode)->data); |
1da177e4 LT |
1175 | } |
1176 | ||
43d9f87b ZR |
1177 | static int acpi_thermal_set_polling(struct acpi_thermal *tz, int seconds) |
1178 | { | |
1179 | if (!tz) | |
1180 | return -EINVAL; | |
1181 | ||
1182 | /* Convert value to deci-seconds */ | |
1183 | tz->polling_frequency = seconds * 10; | |
1184 | ||
1185 | tz->thermal_zone->polling_delay = seconds * 1000; | |
1186 | ||
1187 | if (tz->tz_enabled) | |
1188 | thermal_zone_device_update(tz->thermal_zone); | |
1189 | ||
1190 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
1191 | "Polling frequency set to %lu seconds\n", | |
1192 | tz->polling_frequency/10)); | |
1193 | ||
1194 | return 0; | |
1195 | } | |
1196 | ||
1da177e4 | 1197 | static ssize_t |
4be44fcd LB |
1198 | acpi_thermal_write_polling(struct file *file, |
1199 | const char __user * buffer, | |
1200 | size_t count, loff_t * ppos) | |
1da177e4 | 1201 | { |
50dd0969 JE |
1202 | struct seq_file *m = file->private_data; |
1203 | struct acpi_thermal *tz = m->private; | |
4be44fcd LB |
1204 | int result = 0; |
1205 | char polling_string[12] = { '\0' }; | |
1206 | int seconds = 0; | |
1da177e4 | 1207 | |
1da177e4 LT |
1208 | |
1209 | if (!tz || (count > sizeof(polling_string) - 1)) | |
d550d98d | 1210 | return -EINVAL; |
4be44fcd | 1211 | |
1da177e4 | 1212 | if (copy_from_user(polling_string, buffer, count)) |
d550d98d | 1213 | return -EFAULT; |
4be44fcd | 1214 | |
1da177e4 LT |
1215 | polling_string[count] = '\0'; |
1216 | ||
1217 | seconds = simple_strtoul(polling_string, NULL, 0); | |
4be44fcd | 1218 | |
1da177e4 LT |
1219 | result = acpi_thermal_set_polling(tz, seconds); |
1220 | if (result) | |
d550d98d | 1221 | return result; |
1da177e4 LT |
1222 | |
1223 | acpi_thermal_check(tz); | |
1224 | ||
d550d98d | 1225 | return count; |
1da177e4 LT |
1226 | } |
1227 | ||
4be44fcd | 1228 | static int acpi_thermal_add_fs(struct acpi_device *device) |
1da177e4 | 1229 | { |
4be44fcd | 1230 | struct proc_dir_entry *entry = NULL; |
1da177e4 | 1231 | |
1da177e4 LT |
1232 | |
1233 | if (!acpi_device_dir(device)) { | |
1234 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), | |
4be44fcd | 1235 | acpi_thermal_dir); |
1da177e4 | 1236 | if (!acpi_device_dir(device)) |
d550d98d | 1237 | return -ENODEV; |
1da177e4 LT |
1238 | } |
1239 | ||
1240 | /* 'state' [R] */ | |
cf7acfab DL |
1241 | entry = proc_create_data(ACPI_THERMAL_FILE_STATE, |
1242 | S_IRUGO, acpi_device_dir(device), | |
1243 | &acpi_thermal_state_fops, | |
1244 | acpi_driver_data(device)); | |
1da177e4 | 1245 | if (!entry) |
d550d98d | 1246 | return -ENODEV; |
1da177e4 LT |
1247 | |
1248 | /* 'temperature' [R] */ | |
cf7acfab DL |
1249 | entry = proc_create_data(ACPI_THERMAL_FILE_TEMPERATURE, |
1250 | S_IRUGO, acpi_device_dir(device), | |
1251 | &acpi_thermal_temp_fops, | |
1252 | acpi_driver_data(device)); | |
1da177e4 | 1253 | if (!entry) |
d550d98d | 1254 | return -ENODEV; |
1da177e4 | 1255 | |
2db9ccba | 1256 | /* 'trip_points' [R] */ |
cf7acfab DL |
1257 | entry = proc_create_data(ACPI_THERMAL_FILE_TRIP_POINTS, |
1258 | S_IRUGO, | |
1259 | acpi_device_dir(device), | |
1260 | &acpi_thermal_trip_fops, | |
1261 | acpi_driver_data(device)); | |
1da177e4 | 1262 | if (!entry) |
d550d98d | 1263 | return -ENODEV; |
1da177e4 LT |
1264 | |
1265 | /* 'cooling_mode' [R/W] */ | |
cf7acfab DL |
1266 | entry = proc_create_data(ACPI_THERMAL_FILE_COOLING_MODE, |
1267 | S_IFREG | S_IRUGO | S_IWUSR, | |
1268 | acpi_device_dir(device), | |
1269 | &acpi_thermal_cooling_fops, | |
1270 | acpi_driver_data(device)); | |
1da177e4 | 1271 | if (!entry) |
d550d98d | 1272 | return -ENODEV; |
1da177e4 LT |
1273 | |
1274 | /* 'polling_frequency' [R/W] */ | |
cf7acfab DL |
1275 | entry = proc_create_data(ACPI_THERMAL_FILE_POLLING_FREQ, |
1276 | S_IFREG | S_IRUGO | S_IWUSR, | |
1277 | acpi_device_dir(device), | |
1278 | &acpi_thermal_polling_fops, | |
1279 | acpi_driver_data(device)); | |
1da177e4 | 1280 | if (!entry) |
d550d98d | 1281 | return -ENODEV; |
d550d98d | 1282 | return 0; |
1da177e4 LT |
1283 | } |
1284 | ||
4be44fcd | 1285 | static int acpi_thermal_remove_fs(struct acpi_device *device) |
1da177e4 | 1286 | { |
1da177e4 LT |
1287 | |
1288 | if (acpi_device_dir(device)) { | |
1289 | remove_proc_entry(ACPI_THERMAL_FILE_POLLING_FREQ, | |
1290 | acpi_device_dir(device)); | |
1291 | remove_proc_entry(ACPI_THERMAL_FILE_COOLING_MODE, | |
1292 | acpi_device_dir(device)); | |
1293 | remove_proc_entry(ACPI_THERMAL_FILE_TRIP_POINTS, | |
1294 | acpi_device_dir(device)); | |
1295 | remove_proc_entry(ACPI_THERMAL_FILE_TEMPERATURE, | |
1296 | acpi_device_dir(device)); | |
1297 | remove_proc_entry(ACPI_THERMAL_FILE_STATE, | |
1298 | acpi_device_dir(device)); | |
1299 | remove_proc_entry(acpi_device_bid(device), acpi_thermal_dir); | |
1300 | acpi_device_dir(device) = NULL; | |
1301 | } | |
1302 | ||
d550d98d | 1303 | return 0; |
1da177e4 | 1304 | } |
43d9f87b ZR |
1305 | #else |
1306 | static inline int acpi_thermal_add_fs(struct acpi_device *device) { return 0; } | |
1307 | static inline int acpi_thermal_remove_fs(struct acpi_device *device) | |
1308 | { | |
1309 | return 0; | |
1310 | } | |
1311 | #endif /* CONFIG_ACPI_PROCFS */ | |
1da177e4 LT |
1312 | /* -------------------------------------------------------------------------- |
1313 | Driver Interface | |
1314 | -------------------------------------------------------------------------- */ | |
1315 | ||
342d550d | 1316 | static void acpi_thermal_notify(struct acpi_device *device, u32 event) |
1da177e4 | 1317 | { |
342d550d | 1318 | struct acpi_thermal *tz = acpi_driver_data(device); |
1da177e4 | 1319 | |
1da177e4 LT |
1320 | |
1321 | if (!tz) | |
d550d98d | 1322 | return; |
1da177e4 | 1323 | |
1da177e4 LT |
1324 | switch (event) { |
1325 | case ACPI_THERMAL_NOTIFY_TEMPERATURE: | |
1326 | acpi_thermal_check(tz); | |
1327 | break; | |
1328 | case ACPI_THERMAL_NOTIFY_THRESHOLDS: | |
ce44e197 | 1329 | acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_THRESHOLDS); |
1da177e4 | 1330 | acpi_thermal_check(tz); |
14e04fb3 | 1331 | acpi_bus_generate_proc_event(device, event, 0); |
962ce8ca | 1332 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
0794469d | 1333 | dev_name(&device->dev), event, 0); |
1da177e4 LT |
1334 | break; |
1335 | case ACPI_THERMAL_NOTIFY_DEVICES: | |
ce44e197 ZR |
1336 | acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_DEVICES); |
1337 | acpi_thermal_check(tz); | |
14e04fb3 | 1338 | acpi_bus_generate_proc_event(device, event, 0); |
962ce8ca | 1339 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
0794469d | 1340 | dev_name(&device->dev), event, 0); |
1da177e4 LT |
1341 | break; |
1342 | default: | |
1343 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
4be44fcd | 1344 | "Unsupported event [0x%x]\n", event)); |
1da177e4 LT |
1345 | break; |
1346 | } | |
1da177e4 LT |
1347 | } |
1348 | ||
4be44fcd | 1349 | static int acpi_thermal_get_info(struct acpi_thermal *tz) |
1da177e4 | 1350 | { |
4be44fcd | 1351 | int result = 0; |
1da177e4 | 1352 | |
1da177e4 LT |
1353 | |
1354 | if (!tz) | |
d550d98d | 1355 | return -EINVAL; |
1da177e4 LT |
1356 | |
1357 | /* Get temperature [_TMP] (required) */ | |
1358 | result = acpi_thermal_get_temperature(tz); | |
1359 | if (result) | |
d550d98d | 1360 | return result; |
1da177e4 LT |
1361 | |
1362 | /* Get trip points [_CRT, _PSV, etc.] (required) */ | |
1363 | result = acpi_thermal_get_trip_points(tz); | |
1364 | if (result) | |
d550d98d | 1365 | return result; |
1da177e4 LT |
1366 | |
1367 | /* Set the cooling mode [_SCP] to active cooling (default) */ | |
1368 | result = acpi_thermal_set_cooling_mode(tz, ACPI_THERMAL_MODE_ACTIVE); | |
4be44fcd | 1369 | if (!result) |
1da177e4 | 1370 | tz->flags.cooling_mode = 1; |
1da177e4 LT |
1371 | |
1372 | /* Get default polling frequency [_TZP] (optional) */ | |
1373 | if (tzp) | |
1374 | tz->polling_frequency = tzp; | |
1375 | else | |
1376 | acpi_thermal_get_polling_frequency(tz); | |
1377 | ||
d550d98d | 1378 | return 0; |
1da177e4 LT |
1379 | } |
1380 | ||
13614e37 JD |
1381 | /* |
1382 | * The exact offset between Kelvin and degree Celsius is 273.15. However ACPI | |
1383 | * handles temperature values with a single decimal place. As a consequence, | |
1384 | * some implementations use an offset of 273.1 and others use an offset of | |
1385 | * 273.2. Try to find out which one is being used, to present the most | |
1386 | * accurate and visually appealing number. | |
1387 | * | |
1388 | * The heuristic below should work for all ACPI thermal zones which have a | |
1389 | * critical trip point with a value being a multiple of 0.5 degree Celsius. | |
1390 | */ | |
1391 | static void acpi_thermal_guess_offset(struct acpi_thermal *tz) | |
1392 | { | |
1393 | if (tz->trips.critical.flags.valid && | |
1394 | (tz->trips.critical.temperature % 5) == 1) | |
1395 | tz->kelvin_offset = 2731; | |
1396 | else | |
1397 | tz->kelvin_offset = 2732; | |
1398 | } | |
1399 | ||
4be44fcd | 1400 | static int acpi_thermal_add(struct acpi_device *device) |
1da177e4 | 1401 | { |
4be44fcd | 1402 | int result = 0; |
4be44fcd | 1403 | struct acpi_thermal *tz = NULL; |
1da177e4 | 1404 | |
1da177e4 LT |
1405 | |
1406 | if (!device) | |
d550d98d | 1407 | return -EINVAL; |
1da177e4 | 1408 | |
36bcbec7 | 1409 | tz = kzalloc(sizeof(struct acpi_thermal), GFP_KERNEL); |
1da177e4 | 1410 | if (!tz) |
d550d98d | 1411 | return -ENOMEM; |
1da177e4 | 1412 | |
8348e1b1 | 1413 | tz->device = device; |
1da177e4 LT |
1414 | strcpy(tz->name, device->pnp.bus_id); |
1415 | strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME); | |
1416 | strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS); | |
db89b4f0 | 1417 | device->driver_data = tz; |
6e215785 | 1418 | mutex_init(&tz->lock); |
3f655ef8 ZR |
1419 | |
1420 | ||
1da177e4 LT |
1421 | result = acpi_thermal_get_info(tz); |
1422 | if (result) | |
3f655ef8 ZR |
1423 | goto free_memory; |
1424 | ||
13614e37 JD |
1425 | acpi_thermal_guess_offset(tz); |
1426 | ||
3f655ef8 ZR |
1427 | result = acpi_thermal_register_thermal_zone(tz); |
1428 | if (result) | |
1429 | goto free_memory; | |
1da177e4 LT |
1430 | |
1431 | result = acpi_thermal_add_fs(device); | |
1432 | if (result) | |
3f655ef8 | 1433 | goto unregister_thermal_zone; |
1da177e4 | 1434 | |
1da177e4 | 1435 | printk(KERN_INFO PREFIX "%s [%s] (%ld C)\n", |
4be44fcd LB |
1436 | acpi_device_name(device), acpi_device_bid(device), |
1437 | KELVIN_TO_CELSIUS(tz->temperature)); | |
3f655ef8 | 1438 | goto end; |
1da177e4 | 1439 | |
3f655ef8 ZR |
1440 | unregister_thermal_zone: |
1441 | thermal_zone_device_unregister(tz->thermal_zone); | |
1442 | free_memory: | |
1443 | kfree(tz); | |
1444 | end: | |
d550d98d | 1445 | return result; |
1da177e4 LT |
1446 | } |
1447 | ||
4be44fcd | 1448 | static int acpi_thermal_remove(struct acpi_device *device, int type) |
1da177e4 | 1449 | { |
4be44fcd | 1450 | struct acpi_thermal *tz = NULL; |
1da177e4 | 1451 | |
1da177e4 | 1452 | if (!device || !acpi_driver_data(device)) |
d550d98d | 1453 | return -EINVAL; |
1da177e4 | 1454 | |
50dd0969 | 1455 | tz = acpi_driver_data(device); |
1da177e4 | 1456 | |
1da177e4 | 1457 | acpi_thermal_remove_fs(device); |
3f655ef8 | 1458 | acpi_thermal_unregister_thermal_zone(tz); |
6e215785 | 1459 | mutex_destroy(&tz->lock); |
1da177e4 | 1460 | kfree(tz); |
d550d98d | 1461 | return 0; |
1da177e4 LT |
1462 | } |
1463 | ||
5d9464a4 | 1464 | static int acpi_thermal_resume(struct acpi_device *device) |
74ce1468 KK |
1465 | { |
1466 | struct acpi_thermal *tz = NULL; | |
b1028c54 KK |
1467 | int i, j, power_state, result; |
1468 | ||
74ce1468 KK |
1469 | |
1470 | if (!device || !acpi_driver_data(device)) | |
d550d98d | 1471 | return -EINVAL; |
74ce1468 | 1472 | |
50dd0969 | 1473 | tz = acpi_driver_data(device); |
74ce1468 | 1474 | |
bed936f7 | 1475 | for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { |
b1028c54 KK |
1476 | if (!(&tz->trips.active[i])) |
1477 | break; | |
1478 | if (!tz->trips.active[i].flags.valid) | |
1479 | break; | |
1480 | tz->trips.active[i].flags.enabled = 1; | |
1481 | for (j = 0; j < tz->trips.active[i].devices.count; j++) { | |
1482 | result = acpi_bus_get_power(tz->trips.active[i].devices. | |
1483 | handles[j], &power_state); | |
1484 | if (result || (power_state != ACPI_STATE_D0)) { | |
1485 | tz->trips.active[i].flags.enabled = 0; | |
1486 | break; | |
1487 | } | |
bed936f7 | 1488 | } |
b1028c54 | 1489 | tz->state.active |= tz->trips.active[i].flags.enabled; |
bed936f7 KK |
1490 | } |
1491 | ||
b1028c54 | 1492 | acpi_thermal_check(tz); |
74ce1468 KK |
1493 | |
1494 | return AE_OK; | |
1495 | } | |
1496 | ||
1855256c | 1497 | static int thermal_act(const struct dmi_system_id *d) { |
0b5bfa1c LB |
1498 | |
1499 | if (act == 0) { | |
1500 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1501 | "disabling all active thermal trip points\n", d->ident); | |
1502 | act = -1; | |
1503 | } | |
1504 | return 0; | |
1505 | } | |
1855256c | 1506 | static int thermal_nocrt(const struct dmi_system_id *d) { |
8c99fdce LB |
1507 | |
1508 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1509 | "disabling all critical thermal trip point actions.\n", d->ident); | |
1510 | nocrt = 1; | |
1511 | return 0; | |
1512 | } | |
1855256c | 1513 | static int thermal_tzp(const struct dmi_system_id *d) { |
0b5bfa1c LB |
1514 | |
1515 | if (tzp == 0) { | |
1516 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1517 | "enabling thermal zone polling\n", d->ident); | |
1518 | tzp = 300; /* 300 dS = 30 Seconds */ | |
1519 | } | |
1520 | return 0; | |
1521 | } | |
1855256c | 1522 | static int thermal_psv(const struct dmi_system_id *d) { |
0b5bfa1c LB |
1523 | |
1524 | if (psv == 0) { | |
1525 | printk(KERN_NOTICE "ACPI: %s detected: " | |
1526 | "disabling all passive thermal trip points\n", d->ident); | |
1527 | psv = -1; | |
1528 | } | |
1529 | return 0; | |
1530 | } | |
1531 | ||
1532 | static struct dmi_system_id thermal_dmi_table[] __initdata = { | |
1533 | /* | |
1534 | * Award BIOS on this AOpen makes thermal control almost worthless. | |
1535 | * http://bugzilla.kernel.org/show_bug.cgi?id=8842 | |
1536 | */ | |
1537 | { | |
1538 | .callback = thermal_act, | |
1539 | .ident = "AOpen i915GMm-HFS", | |
1540 | .matches = { | |
1541 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
1542 | DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), | |
1543 | }, | |
1544 | }, | |
1545 | { | |
1546 | .callback = thermal_psv, | |
1547 | .ident = "AOpen i915GMm-HFS", | |
1548 | .matches = { | |
1549 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
1550 | DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), | |
1551 | }, | |
1552 | }, | |
1553 | { | |
1554 | .callback = thermal_tzp, | |
1555 | .ident = "AOpen i915GMm-HFS", | |
1556 | .matches = { | |
1557 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
1558 | DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"), | |
1559 | }, | |
1560 | }, | |
8c99fdce LB |
1561 | { |
1562 | .callback = thermal_nocrt, | |
1563 | .ident = "Gigabyte GA-7ZX", | |
1564 | .matches = { | |
1565 | DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co., Ltd."), | |
1566 | DMI_MATCH(DMI_BOARD_NAME, "7ZX"), | |
1567 | }, | |
1568 | }, | |
0b5bfa1c LB |
1569 | {} |
1570 | }; | |
0b5bfa1c | 1571 | |
4be44fcd | 1572 | static int __init acpi_thermal_init(void) |
1da177e4 | 1573 | { |
4be44fcd | 1574 | int result = 0; |
1da177e4 | 1575 | |
0b5bfa1c LB |
1576 | dmi_check_system(thermal_dmi_table); |
1577 | ||
72b33ef8 LB |
1578 | if (off) { |
1579 | printk(KERN_NOTICE "ACPI: thermal control disabled\n"); | |
1580 | return -ENODEV; | |
1581 | } | |
43d9f87b ZR |
1582 | |
1583 | #ifdef CONFIG_ACPI_PROCFS | |
1da177e4 LT |
1584 | acpi_thermal_dir = proc_mkdir(ACPI_THERMAL_CLASS, acpi_root_dir); |
1585 | if (!acpi_thermal_dir) | |
d550d98d | 1586 | return -ENODEV; |
43d9f87b | 1587 | #endif |
1da177e4 LT |
1588 | |
1589 | result = acpi_bus_register_driver(&acpi_thermal_driver); | |
1590 | if (result < 0) { | |
43d9f87b | 1591 | #ifdef CONFIG_ACPI_PROCFS |
1da177e4 | 1592 | remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir); |
43d9f87b | 1593 | #endif |
d550d98d | 1594 | return -ENODEV; |
1da177e4 LT |
1595 | } |
1596 | ||
d550d98d | 1597 | return 0; |
1da177e4 LT |
1598 | } |
1599 | ||
4be44fcd | 1600 | static void __exit acpi_thermal_exit(void) |
1da177e4 | 1601 | { |
1da177e4 LT |
1602 | |
1603 | acpi_bus_unregister_driver(&acpi_thermal_driver); | |
1604 | ||
43d9f87b | 1605 | #ifdef CONFIG_ACPI_PROCFS |
1da177e4 | 1606 | remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir); |
43d9f87b | 1607 | #endif |
1da177e4 | 1608 | |
d550d98d | 1609 | return; |
1da177e4 LT |
1610 | } |
1611 | ||
1da177e4 LT |
1612 | module_init(acpi_thermal_init); |
1613 | module_exit(acpi_thermal_exit); |