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;
97 spin_lock_irqsave(&priv->lock, flags);
103 case NOUVEAU_THERM_CTRL_MANUAL:
104 duty = nouveau_therm_fan_get(therm);
108 case NOUVEAU_THERM_CTRL_AUTO:
109 if (priv->fan->bios.nr_fan_trip)
110 duty = nouveau_therm_update_trip(therm);
112 duty = nouveau_therm_update_linear(therm);
114 case NOUVEAU_THERM_CTRL_NONE:
119 nv_debug(therm, "FAN target request: %d%%\n", duty);
120 nouveau_therm_fan_set(therm, (mode != NOUVEAU_THERM_CTRL_AUTO), duty);
123 if (list_empty(&priv->alarm.head) && (mode == NOUVEAU_THERM_CTRL_AUTO))
124 ptimer->alarm(ptimer, 1000000000ULL, &priv->alarm);
125 spin_unlock_irqrestore(&priv->lock, flags);
129 nouveau_therm_alarm(struct nouveau_alarm *alarm)
131 struct nouveau_therm_priv *priv =
132 container_of(alarm, struct nouveau_therm_priv, alarm);
133 nouveau_therm_update(&priv->base, -1);
137 nouveau_therm_mode(struct nouveau_therm *therm, int mode)
139 struct nouveau_therm_priv *priv = (void *)therm;
140 struct nouveau_device *device = nv_device(therm);
141 static const char *name[] = {
147 /* The default PDAEMON ucode interferes with fan management */
148 if ((mode >= ARRAY_SIZE(name)) ||
149 (mode != NOUVEAU_THERM_CTRL_NONE && device->card_type >= NV_C0))
152 if (priv->mode == mode)
155 nv_info(therm, "Thermal management: %s\n", name[mode]);
156 nouveau_therm_update(therm, mode);
161 nouveau_therm_attr_get(struct nouveau_therm *therm,
162 enum nouveau_therm_attr_type type)
164 struct nouveau_therm_priv *priv = (void *)therm;
167 case NOUVEAU_THERM_ATTR_FAN_MIN_DUTY:
168 return priv->fan->bios.min_duty;
169 case NOUVEAU_THERM_ATTR_FAN_MAX_DUTY:
170 return priv->fan->bios.max_duty;
171 case NOUVEAU_THERM_ATTR_FAN_MODE:
173 case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST:
174 return priv->bios_sensor.thrs_fan_boost.temp;
175 case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST:
176 return priv->bios_sensor.thrs_fan_boost.hysteresis;
177 case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK:
178 return priv->bios_sensor.thrs_down_clock.temp;
179 case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST:
180 return priv->bios_sensor.thrs_down_clock.hysteresis;
181 case NOUVEAU_THERM_ATTR_THRS_CRITICAL:
182 return priv->bios_sensor.thrs_critical.temp;
183 case NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST:
184 return priv->bios_sensor.thrs_critical.hysteresis;
185 case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN:
186 return priv->bios_sensor.thrs_shutdown.temp;
187 case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST:
188 return priv->bios_sensor.thrs_shutdown.hysteresis;
195 nouveau_therm_attr_set(struct nouveau_therm *therm,
196 enum nouveau_therm_attr_type type, int value)
198 struct nouveau_therm_priv *priv = (void *)therm;
201 case NOUVEAU_THERM_ATTR_FAN_MIN_DUTY:
204 if (value > priv->fan->bios.max_duty)
205 value = priv->fan->bios.max_duty;
206 priv->fan->bios.min_duty = value;
208 case NOUVEAU_THERM_ATTR_FAN_MAX_DUTY:
211 if (value < priv->fan->bios.min_duty)
212 value = priv->fan->bios.min_duty;
213 priv->fan->bios.max_duty = value;
215 case NOUVEAU_THERM_ATTR_FAN_MODE:
216 return nouveau_therm_mode(therm, value);
217 case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST:
218 priv->bios_sensor.thrs_fan_boost.temp = value;
219 priv->sensor.program_alarms(therm);
221 case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST:
222 priv->bios_sensor.thrs_fan_boost.hysteresis = value;
223 priv->sensor.program_alarms(therm);
225 case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK:
226 priv->bios_sensor.thrs_down_clock.temp = value;
227 priv->sensor.program_alarms(therm);
229 case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST:
230 priv->bios_sensor.thrs_down_clock.hysteresis = value;
231 priv->sensor.program_alarms(therm);
233 case NOUVEAU_THERM_ATTR_THRS_CRITICAL:
234 priv->bios_sensor.thrs_critical.temp = value;
235 priv->sensor.program_alarms(therm);
237 case NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST:
238 priv->bios_sensor.thrs_critical.hysteresis = value;
239 priv->sensor.program_alarms(therm);
241 case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN:
242 priv->bios_sensor.thrs_shutdown.temp = value;
243 priv->sensor.program_alarms(therm);
245 case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST:
246 priv->bios_sensor.thrs_shutdown.hysteresis = value;
247 priv->sensor.program_alarms(therm);
255 _nouveau_therm_init(struct nouveau_object *object)
257 struct nouveau_therm *therm = (void *)object;
258 struct nouveau_therm_priv *priv = (void *)therm;
261 ret = nouveau_subdev_init(&therm->base);
265 if (priv->suspend >= 0)
266 nouveau_therm_mode(therm, priv->mode);
267 priv->sensor.program_alarms(therm);
272 _nouveau_therm_fini(struct nouveau_object *object, bool suspend)
274 struct nouveau_therm *therm = (void *)object;
275 struct nouveau_therm_priv *priv = (void *)therm;
278 priv->suspend = priv->mode;
279 priv->mode = NOUVEAU_THERM_CTRL_NONE;
282 return nouveau_subdev_fini(&therm->base, suspend);
286 nouveau_therm_create_(struct nouveau_object *parent,
287 struct nouveau_object *engine,
288 struct nouveau_oclass *oclass,
289 int length, void **pobject)
291 struct nouveau_therm_priv *priv;
294 ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PTHERM",
295 "therm", length, pobject);
300 nouveau_alarm_init(&priv->alarm, nouveau_therm_alarm);
301 spin_lock_init(&priv->lock);
302 spin_lock_init(&priv->sensor.alarm_program_lock);
304 priv->base.fan_get = nouveau_therm_fan_user_get;
305 priv->base.fan_set = nouveau_therm_fan_user_set;
306 priv->base.fan_sense = nouveau_therm_fan_sense;
307 priv->base.attr_get = nouveau_therm_attr_get;
308 priv->base.attr_set = nouveau_therm_attr_set;
309 priv->mode = priv->suspend = -1; /* undefined */
314 nouveau_therm_preinit(struct nouveau_therm *therm)
316 nouveau_therm_ic_ctor(therm);
317 nouveau_therm_sensor_ctor(therm);
318 nouveau_therm_fan_ctor(therm);
320 nouveau_therm_mode(therm, NOUVEAU_THERM_CTRL_NONE);
325 _nouveau_therm_dtor(struct nouveau_object *object)
327 struct nouveau_therm_priv *priv = (void *)object;
329 nouveau_subdev_destroy(&priv->base.base);