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_fan_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 /* do not allow automatic fan management if the thermal sensor is
154 if (priv->mode == 2 && therm->temp_get(therm) < 0)
157 if (priv->mode == mode)
160 nv_info(therm, "fan management: %s\n", name[mode]);
161 nouveau_therm_update(therm, mode);
166 nouveau_therm_attr_get(struct nouveau_therm *therm,
167 enum nouveau_therm_attr_type type)
169 struct nouveau_therm_priv *priv = (void *)therm;
172 case NOUVEAU_THERM_ATTR_FAN_MIN_DUTY:
173 return priv->fan->bios.min_duty;
174 case NOUVEAU_THERM_ATTR_FAN_MAX_DUTY:
175 return priv->fan->bios.max_duty;
176 case NOUVEAU_THERM_ATTR_FAN_MODE:
178 case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST:
179 return priv->bios_sensor.thrs_fan_boost.temp;
180 case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST:
181 return priv->bios_sensor.thrs_fan_boost.hysteresis;
182 case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK:
183 return priv->bios_sensor.thrs_down_clock.temp;
184 case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST:
185 return priv->bios_sensor.thrs_down_clock.hysteresis;
186 case NOUVEAU_THERM_ATTR_THRS_CRITICAL:
187 return priv->bios_sensor.thrs_critical.temp;
188 case NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST:
189 return priv->bios_sensor.thrs_critical.hysteresis;
190 case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN:
191 return priv->bios_sensor.thrs_shutdown.temp;
192 case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST:
193 return priv->bios_sensor.thrs_shutdown.hysteresis;
200 nouveau_therm_attr_set(struct nouveau_therm *therm,
201 enum nouveau_therm_attr_type type, int value)
203 struct nouveau_therm_priv *priv = (void *)therm;
206 case NOUVEAU_THERM_ATTR_FAN_MIN_DUTY:
209 if (value > priv->fan->bios.max_duty)
210 value = priv->fan->bios.max_duty;
211 priv->fan->bios.min_duty = value;
213 case NOUVEAU_THERM_ATTR_FAN_MAX_DUTY:
216 if (value < priv->fan->bios.min_duty)
217 value = priv->fan->bios.min_duty;
218 priv->fan->bios.max_duty = value;
220 case NOUVEAU_THERM_ATTR_FAN_MODE:
221 return nouveau_therm_fan_mode(therm, value);
222 case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST:
223 priv->bios_sensor.thrs_fan_boost.temp = value;
224 priv->sensor.program_alarms(therm);
226 case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST:
227 priv->bios_sensor.thrs_fan_boost.hysteresis = value;
228 priv->sensor.program_alarms(therm);
230 case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK:
231 priv->bios_sensor.thrs_down_clock.temp = value;
232 priv->sensor.program_alarms(therm);
234 case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST:
235 priv->bios_sensor.thrs_down_clock.hysteresis = value;
236 priv->sensor.program_alarms(therm);
238 case NOUVEAU_THERM_ATTR_THRS_CRITICAL:
239 priv->bios_sensor.thrs_critical.temp = value;
240 priv->sensor.program_alarms(therm);
242 case NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST:
243 priv->bios_sensor.thrs_critical.hysteresis = value;
244 priv->sensor.program_alarms(therm);
246 case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN:
247 priv->bios_sensor.thrs_shutdown.temp = value;
248 priv->sensor.program_alarms(therm);
250 case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST:
251 priv->bios_sensor.thrs_shutdown.hysteresis = value;
252 priv->sensor.program_alarms(therm);
260 _nouveau_therm_init(struct nouveau_object *object)
262 struct nouveau_therm *therm = (void *)object;
263 struct nouveau_therm_priv *priv = (void *)therm;
266 ret = nouveau_subdev_init(&therm->base);
270 if (priv->suspend >= 0)
271 nouveau_therm_fan_mode(therm, priv->mode);
272 priv->sensor.program_alarms(therm);
277 _nouveau_therm_fini(struct nouveau_object *object, bool suspend)
279 struct nouveau_therm *therm = (void *)object;
280 struct nouveau_therm_priv *priv = (void *)therm;
283 priv->suspend = priv->mode;
284 priv->mode = NOUVEAU_THERM_CTRL_NONE;
287 return nouveau_subdev_fini(&therm->base, suspend);
291 nouveau_therm_create_(struct nouveau_object *parent,
292 struct nouveau_object *engine,
293 struct nouveau_oclass *oclass,
294 int length, void **pobject)
296 struct nouveau_therm_priv *priv;
299 ret = nouveau_subdev_create_(parent, engine, oclass, 0, "PTHERM",
300 "therm", length, pobject);
305 nouveau_alarm_init(&priv->alarm, nouveau_therm_alarm);
306 spin_lock_init(&priv->lock);
307 spin_lock_init(&priv->sensor.alarm_program_lock);
309 priv->base.fan_get = nouveau_therm_fan_user_get;
310 priv->base.fan_set = nouveau_therm_fan_user_set;
311 priv->base.fan_sense = nouveau_therm_fan_sense;
312 priv->base.attr_get = nouveau_therm_attr_get;
313 priv->base.attr_set = nouveau_therm_attr_set;
314 priv->mode = priv->suspend = -1; /* undefined */
319 nouveau_therm_preinit(struct nouveau_therm *therm)
321 nouveau_therm_sensor_ctor(therm);
322 nouveau_therm_ic_ctor(therm);
323 nouveau_therm_fan_ctor(therm);
325 nouveau_therm_fan_mode(therm, NOUVEAU_THERM_CTRL_NONE);
326 nouveau_therm_sensor_preinit(therm);
331 _nouveau_therm_dtor(struct nouveau_object *object)
333 struct nouveau_therm_priv *priv = (void *)object;
335 nouveau_subdev_destroy(&priv->base.base);