2 * Copyright 2012 The Nouveau community
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
22 * Authors: Martin Peres
25 #include <core/object.h>
26 #include <core/device.h>
28 #include <subdev/bios.h>
33 nouveau_therm_update_trip(struct nouveau_therm *therm)
35 struct nouveau_therm_priv *priv = (void *)therm;
36 struct nouveau_therm_trip_point *trip = priv->fan->bios.trip,
38 *last_trip = priv->last_trip;
39 u8 temp = therm->temp_get(therm);
42 /* look for the trip point corresponding to the current temperature */
44 for (i = 0; i < priv->fan->bios.nr_fan_trip; i++) {
45 if (temp >= trip[i].temp)
49 /* account for the hysteresis cycle */
50 if (last_trip && temp <= (last_trip->temp) &&
51 temp > (last_trip->temp - last_trip->hysteresis))
55 duty = cur_trip->fan_duty;
56 priv->last_trip = cur_trip;
59 priv->last_trip = NULL;
66 nouveau_therm_update_linear(struct nouveau_therm *therm)
68 struct nouveau_therm_priv *priv = (void *)therm;
69 u8 linear_min_temp = priv->fan->bios.linear_min_temp;
70 u8 linear_max_temp = priv->fan->bios.linear_max_temp;
71 u8 temp = therm->temp_get(therm);
74 /* handle the non-linear part first */
75 if (temp < linear_min_temp)
76 return priv->fan->bios.min_duty;
77 else if (temp > linear_max_temp)
78 return priv->fan->bios.max_duty;
80 /* we are in the linear zone */
81 duty = (temp - linear_min_temp);
82 duty *= (priv->fan->bios.max_duty - priv->fan->bios.min_duty);
83 duty /= (linear_max_temp - linear_min_temp);
84 duty += priv->fan->bios.min_duty;
90 nouveau_therm_update(struct nouveau_therm *therm, int mode)
92 struct nouveau_timer *ptimer = nouveau_timer(therm);
93 struct nouveau_therm_priv *priv = (void *)therm;
99 spin_lock_irqsave(&priv->lock, flags);
105 case NOUVEAU_THERM_CTRL_MANUAL:
106 ptimer->alarm_cancel(ptimer, &priv->alarm);
107 duty = nouveau_therm_fan_get(therm);
112 case NOUVEAU_THERM_CTRL_AUTO:
113 if (priv->fan->bios.nr_fan_trip) {
114 duty = nouveau_therm_update_trip(therm);
116 if (priv->fan->bios.linear_min_temp ||
117 priv->fan->bios.linear_max_temp) {
118 duty = nouveau_therm_update_linear(therm);
126 case NOUVEAU_THERM_CTRL_NONE:
128 ptimer->alarm_cancel(ptimer, &priv->alarm);
132 if (list_empty(&priv->alarm.head) && poll)
133 ptimer->alarm(ptimer, 1000000000ULL, &priv->alarm);
134 spin_unlock_irqrestore(&priv->lock, flags);
137 nv_debug(therm, "FAN target request: %d%%\n", duty);
138 nouveau_therm_fan_set(therm, immd, duty);
143 nouveau_therm_cstate(struct nouveau_therm *ptherm, int fan, int dir)
145 struct nouveau_therm_priv *priv = (void *)ptherm;
146 if (!dir || (dir < 0 && fan < priv->cstate) ||
147 (dir > 0 && fan > priv->cstate)) {
148 nv_debug(ptherm, "default fan speed -> %d%%\n", fan);
150 nouveau_therm_update(ptherm, -1);
156 nouveau_therm_alarm(struct nouveau_alarm *alarm)
158 struct nouveau_therm_priv *priv =
159 container_of(alarm, struct nouveau_therm_priv, alarm);
160 nouveau_therm_update(&priv->base, -1);
164 nouveau_therm_fan_mode(struct nouveau_therm *therm, int mode)
166 struct nouveau_therm_priv *priv = (void *)therm;
167 struct nouveau_device *device = nv_device(therm);
168 static const char *name[] = {
174 /* The default PPWR ucode on fermi interferes with fan management */
175 if ((mode >= ARRAY_SIZE(name)) ||
176 (mode != NOUVEAU_THERM_CTRL_NONE && device->card_type >= NV_C0 &&
177 !nouveau_subdev(device, NVDEV_SUBDEV_PWR)))
180 /* do not allow automatic fan management if the thermal sensor is
182 if (priv->mode == NOUVEAU_THERM_CTRL_AUTO && therm->temp_get(therm) < 0)
185 if (priv->mode == mode)
188 nv_info(therm, "fan management: %s\n", name[mode]);
189 nouveau_therm_update(therm, mode);
194 nouveau_therm_attr_get(struct nouveau_therm *therm,
195 enum nouveau_therm_attr_type type)
197 struct nouveau_therm_priv *priv = (void *)therm;
200 case NOUVEAU_THERM_ATTR_FAN_MIN_DUTY:
201 return priv->fan->bios.min_duty;
202 case NOUVEAU_THERM_ATTR_FAN_MAX_DUTY:
203 return priv->fan->bios.max_duty;
204 case NOUVEAU_THERM_ATTR_FAN_MODE:
206 case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST:
207 return priv->bios_sensor.thrs_fan_boost.temp;
208 case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST:
209 return priv->bios_sensor.thrs_fan_boost.hysteresis;
210 case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK:
211 return priv->bios_sensor.thrs_down_clock.temp;
212 case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST:
213 return priv->bios_sensor.thrs_down_clock.hysteresis;
214 case NOUVEAU_THERM_ATTR_THRS_CRITICAL:
215 return priv->bios_sensor.thrs_critical.temp;
216 case NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST:
217 return priv->bios_sensor.thrs_critical.hysteresis;
218 case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN:
219 return priv->bios_sensor.thrs_shutdown.temp;
220 case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST:
221 return priv->bios_sensor.thrs_shutdown.hysteresis;
228 nouveau_therm_attr_set(struct nouveau_therm *therm,
229 enum nouveau_therm_attr_type type, int value)
231 struct nouveau_therm_priv *priv = (void *)therm;
234 case NOUVEAU_THERM_ATTR_FAN_MIN_DUTY:
237 if (value > priv->fan->bios.max_duty)
238 value = priv->fan->bios.max_duty;
239 priv->fan->bios.min_duty = value;
241 case NOUVEAU_THERM_ATTR_FAN_MAX_DUTY:
244 if (value < priv->fan->bios.min_duty)
245 value = priv->fan->bios.min_duty;
246 priv->fan->bios.max_duty = value;
248 case NOUVEAU_THERM_ATTR_FAN_MODE:
249 return nouveau_therm_fan_mode(therm, value);
250 case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST:
251 priv->bios_sensor.thrs_fan_boost.temp = value;
252 priv->sensor.program_alarms(therm);
254 case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST:
255 priv->bios_sensor.thrs_fan_boost.hysteresis = value;
256 priv->sensor.program_alarms(therm);
258 case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK:
259 priv->bios_sensor.thrs_down_clock.temp = value;
260 priv->sensor.program_alarms(therm);
262 case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST:
263 priv->bios_sensor.thrs_down_clock.hysteresis = value;
264 priv->sensor.program_alarms(therm);
266 case NOUVEAU_THERM_ATTR_THRS_CRITICAL:
267 priv->bios_sensor.thrs_critical.temp = value;
268 priv->sensor.program_alarms(therm);
270 case NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST:
271 priv->bios_sensor.thrs_critical.hysteresis = value;
272 priv->sensor.program_alarms(therm);
274 case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN:
275 priv->bios_sensor.thrs_shutdown.temp = value;
276 priv->sensor.program_alarms(therm);
278 case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST:
279 priv->bios_sensor.thrs_shutdown.hysteresis = value;
280 priv->sensor.program_alarms(therm);
288 _nouveau_therm_init(struct nouveau_object *object)
290 struct nouveau_therm *therm = (void *)object;
291 struct nouveau_therm_priv *priv = (void *)therm;
294 ret = nouveau_subdev_init(&therm->base);
298 if (priv->suspend >= 0) {
299 /* restore the pwm value only when on manual or auto mode */
300 if (priv->suspend > 0)
301 nouveau_therm_fan_set(therm, true, priv->fan->percent);
303 nouveau_therm_fan_mode(therm, priv->suspend);
305 nouveau_therm_sensor_init(therm);
306 nouveau_therm_fan_init(therm);
311 _nouveau_therm_fini(struct nouveau_object *object, bool suspend)
313 struct nouveau_therm *therm = (void *)object;
314 struct nouveau_therm_priv *priv = (void *)therm;
316 nouveau_therm_fan_fini(therm, suspend);
317 nouveau_therm_sensor_fini(therm, suspend);
319 priv->suspend = priv->mode;
320 priv->mode = NOUVEAU_THERM_CTRL_NONE;
323 return nouveau_subdev_fini(&therm->base, suspend);
327 nouveau_therm_create_(struct nouveau_object *parent,
328 struct nouveau_object *engine,
329 struct nouveau_oclass *oclass,
330 int length, void **pobject)
332 struct nouveau_therm_priv *priv;
335 ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PTHERM",
336 "therm", length, pobject);
341 nouveau_alarm_init(&priv->alarm, nouveau_therm_alarm);
342 spin_lock_init(&priv->lock);
343 spin_lock_init(&priv->sensor.alarm_program_lock);
345 priv->base.fan_get = nouveau_therm_fan_user_get;
346 priv->base.fan_set = nouveau_therm_fan_user_set;
347 priv->base.fan_sense = nouveau_therm_fan_sense;
348 priv->base.attr_get = nouveau_therm_attr_get;
349 priv->base.attr_set = nouveau_therm_attr_set;
350 priv->mode = priv->suspend = -1; /* undefined */
355 nouveau_therm_preinit(struct nouveau_therm *therm)
357 nouveau_therm_sensor_ctor(therm);
358 nouveau_therm_ic_ctor(therm);
359 nouveau_therm_fan_ctor(therm);
361 nouveau_therm_fan_mode(therm, NOUVEAU_THERM_CTRL_AUTO);
362 nouveau_therm_sensor_preinit(therm);
367 _nouveau_therm_dtor(struct nouveau_object *object)
369 struct nouveau_therm_priv *priv = (void *)object;
371 nouveau_subdev_destroy(&priv->base.base);