From: Martin Peres Date: Sun, 4 Nov 2012 23:18:49 +0000 (+0100) Subject: drm/nouveau/therm: implement support for temperature alarms X-Git-Tag: firefly_0821_release~3680^2~1036^2~10^2~72 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0083b91dac482c70eeb96745d9ef604f904da3e5;p=firefly-linux-kernel-4.4.55.git drm/nouveau/therm: implement support for temperature alarms For now, we only boost the fan speed to the maximum and auto-mode when hitting the FAN_BOOST threshold and halt the computer when it reaches the shutdown temperature. The downclock and critical thresholds do nothing. On nv43:50 and nva3+, temperature is polled because of the limited hardware. I'll improve the nva3+ situation by implementing alarm management in PDAEMON whenever I can but polling once every second shouldn't be such a problem. v2 (Ben Skeggs): - rebased v3: fixed false-detections and threshold reprogrammation handling on nv50:nvc0 Signed-off-by: Ben Skeggs Signed-off-by: Martin Peres --- diff --git a/drivers/gpu/drm/nouveau/core/os.h b/drivers/gpu/drm/nouveau/core/os.h index cfe3b9cad156..eb496033b55c 100644 --- a/drivers/gpu/drm/nouveau/core/os.h +++ b/drivers/gpu/drm/nouveau/core/os.h @@ -16,6 +16,7 @@ #include #include #include +#include #include diff --git a/drivers/gpu/drm/nouveau/core/subdev/mc/nv98.c b/drivers/gpu/drm/nouveau/core/subdev/mc/nv98.c index b93fd094c806..3a80b29dce0f 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/mc/nv98.c +++ b/drivers/gpu/drm/nouveau/core/subdev/mc/nv98.c @@ -35,6 +35,7 @@ nv98_mc_intr[] = { { 0x00001000, NVDEV_ENGINE_GR }, { 0x00004000, NVDEV_ENGINE_CRYPT }, /* NV84:NVA3 */ { 0x00008000, NVDEV_ENGINE_BSP }, + { 0x00080000, NVDEV_SUBDEV_THERM }, /* NVA3:NVC0 */ { 0x00100000, NVDEV_SUBDEV_TIMER }, { 0x00200000, NVDEV_SUBDEV_GPIO }, { 0x00400000, NVDEV_ENGINE_COPY0 }, /* NVA3- */ diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c index dee764c7b693..f54495a0907a 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c @@ -123,7 +123,7 @@ nouveau_therm_alarm(struct nouveau_alarm *alarm) nouveau_therm_update(&priv->base, -1); } -static int +int nouveau_therm_mode(struct nouveau_therm *therm, int mode) { struct nouveau_therm_priv *priv = (void *)therm; @@ -212,27 +212,35 @@ nouveau_therm_attr_set(struct nouveau_therm *therm, return nouveau_therm_mode(therm, value); case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST: priv->bios_sensor.thrs_fan_boost.temp = value; + priv->sensor.program_alarms(therm); return 0; case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST_HYST: priv->bios_sensor.thrs_fan_boost.hysteresis = value; + priv->sensor.program_alarms(therm); return 0; case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK: priv->bios_sensor.thrs_down_clock.temp = value; + priv->sensor.program_alarms(therm); return 0; case NOUVEAU_THERM_ATTR_THRS_DOWN_CLK_HYST: priv->bios_sensor.thrs_down_clock.hysteresis = value; + priv->sensor.program_alarms(therm); return 0; case NOUVEAU_THERM_ATTR_THRS_CRITICAL: priv->bios_sensor.thrs_critical.temp = value; + priv->sensor.program_alarms(therm); return 0; case NOUVEAU_THERM_ATTR_THRS_CRITICAL_HYST: priv->bios_sensor.thrs_critical.hysteresis = value; + priv->sensor.program_alarms(therm); return 0; case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN: priv->bios_sensor.thrs_shutdown.temp = value; + priv->sensor.program_alarms(therm); return 0; case NOUVEAU_THERM_ATTR_THRS_SHUTDOWN_HYST: priv->bios_sensor.thrs_shutdown.hysteresis = value; + priv->sensor.program_alarms(therm); return 0; } @@ -253,6 +261,7 @@ _nouveau_therm_init(struct nouveau_object *object) if (priv->fan->percent >= 0) therm->fan_set(therm, priv->fan->percent); + priv->sensor.program_alarms(therm); return 0; } diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c b/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c index 3f7c11500598..5c17577553f6 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c @@ -38,6 +38,7 @@ nv40_sensor_setup(struct nouveau_therm *therm) if (device->chipset >= 0x46) { nv_mask(therm, 0x15b8, 0x80000000, 0); nv_wr32(therm, 0x15b0, 0x80003fff); + mdelay(10); /* wait for the temperature to stabilize */ return nv_rd32(therm, 0x15b4) & 0x3fff; } else { nv_wr32(therm, 0x15b0, 0xff); @@ -135,6 +136,20 @@ nv40_fan_pwm_set(struct nouveau_therm *therm, int line, u32 divs, u32 duty) return 0; } +static void +nv40_therm_intr(struct nouveau_subdev *subdev) +{ + struct nouveau_therm *therm = nouveau_therm(subdev); + uint32_t stat = nv_rd32(therm, 0x1100); + + /* traitement */ + + /* ack all IRQs */ + nv_wr32(therm, 0x1100, 0x70000); + + nv_error(therm, "THERM received an IRQ: stat = %x\n", stat); +} + static int nv40_therm_ctor(struct nouveau_object *parent, struct nouveau_object *engine, @@ -153,6 +168,8 @@ nv40_therm_ctor(struct nouveau_object *parent, priv->base.base.pwm_get = nv40_fan_pwm_get; priv->base.base.pwm_set = nv40_fan_pwm_set; priv->base.base.temp_get = nv40_temp_get; + priv->base.sensor.program_alarms = nouveau_therm_program_alarms_polling; + nv_subdev(priv)->intr = nv40_therm_intr; return nouveau_therm_preinit(&priv->base.base); } diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/nv50.c b/drivers/gpu/drm/nouveau/core/subdev/therm/nv50.c index 8bb4c2a15efa..4b7fe24f5506 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/nv50.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/nv50.c @@ -124,6 +124,141 @@ nv50_temp_get(struct nouveau_therm *therm) return nv_rd32(therm, 0x20400); } +static void +nv50_therm_program_alarms(struct nouveau_therm *therm) +{ + struct nouveau_therm_priv *priv = (void *)therm; + struct nvbios_therm_sensor *sensor = &priv->bios_sensor; + unsigned long flags; + + spin_lock_irqsave(&priv->sensor.alarm_program_lock, flags); + + /* enable RISING and FALLING IRQs for shutdown, THRS 0, 1, 2 and 4 */ + nv_wr32(therm, 0x20000, 0x000003ff); + + /* shutdown: The computer should be shutdown when reached */ + nv_wr32(therm, 0x20484, sensor->thrs_shutdown.hysteresis); + nv_wr32(therm, 0x20480, sensor->thrs_shutdown.temp); + + /* THRS_1 : fan boost*/ + nv_wr32(therm, 0x204c4, sensor->thrs_fan_boost.temp); + + /* THRS_2 : critical */ + nv_wr32(therm, 0x204c0, sensor->thrs_critical.temp); + + /* THRS_4 : down clock */ + nv_wr32(therm, 0x20414, sensor->thrs_down_clock.temp); + spin_unlock_irqrestore(&priv->sensor.alarm_program_lock, flags); + + nv_info(therm, + "Programmed thresholds [ %d(%d), %d(%d), %d(%d), %d(%d) ]\n", + sensor->thrs_fan_boost.temp, sensor->thrs_fan_boost.hysteresis, + sensor->thrs_down_clock.temp, + sensor->thrs_down_clock.hysteresis, + sensor->thrs_critical.temp, sensor->thrs_critical.hysteresis, + sensor->thrs_shutdown.temp, sensor->thrs_shutdown.hysteresis); + +} + +/* must be called with alarm_program_lock taken ! */ +static void +nv50_therm_threshold_hyst_emulation(struct nouveau_therm *therm, + uint32_t thrs_reg, u8 status_bit, + const struct nvbios_therm_threshold *thrs, + enum nouveau_therm_thrs thrs_name) +{ + enum nouveau_therm_thrs_direction direction; + enum nouveau_therm_thrs_state prev_state, new_state; + int temp, cur; + + prev_state = nouveau_therm_sensor_get_threshold_state(therm, thrs_name); + temp = nv_rd32(therm, thrs_reg); + + /* program the next threshold */ + if (temp == thrs->temp) { + nv_wr32(therm, thrs_reg, thrs->temp - thrs->hysteresis); + new_state = NOUVEAU_THERM_THRS_HIGHER; + } else { + nv_wr32(therm, thrs_reg, thrs->temp); + new_state = NOUVEAU_THERM_THRS_LOWER; + } + + /* fix the state (in case someone reprogrammed the alarms) */ + cur = therm->temp_get(therm); + if (new_state == NOUVEAU_THERM_THRS_LOWER && cur > thrs->temp) + new_state = NOUVEAU_THERM_THRS_HIGHER; + else if (new_state == NOUVEAU_THERM_THRS_HIGHER && + cur < thrs->temp - thrs->hysteresis) + new_state = NOUVEAU_THERM_THRS_LOWER; + nouveau_therm_sensor_set_threshold_state(therm, thrs_name, new_state); + + /* find the direction */ + if (prev_state < new_state) + direction = NOUVEAU_THERM_THRS_RISING; + else if (prev_state > new_state) + direction = NOUVEAU_THERM_THRS_FALLING; + else + return; + + /* advertise a change in direction */ + nouveau_therm_sensor_event(therm, thrs_name, direction); +} + +static void +nv50_therm_intr(struct nouveau_subdev *subdev) +{ + struct nouveau_therm *therm = nouveau_therm(subdev); + struct nouveau_therm_priv *priv = (void *)therm; + struct nvbios_therm_sensor *sensor = &priv->bios_sensor; + unsigned long flags; + uint32_t intr; + + spin_lock_irqsave(&priv->sensor.alarm_program_lock, flags); + + intr = nv_rd32(therm, 0x20100); + + /* THRS_4: downclock */ + if (intr & 0x002) { + nv50_therm_threshold_hyst_emulation(therm, 0x20414, 24, + &sensor->thrs_down_clock, + NOUVEAU_THERM_THRS_DOWNCLOCK); + intr &= ~0x002; + } + + /* shutdown */ + if (intr & 0x004) { + nv50_therm_threshold_hyst_emulation(therm, 0x20480, 20, + &sensor->thrs_shutdown, + NOUVEAU_THERM_THRS_SHUTDOWN); + intr &= ~0x004; + } + + /* THRS_1 : fan boost */ + if (intr & 0x008) { + nv50_therm_threshold_hyst_emulation(therm, 0x204c4, 21, + &sensor->thrs_fan_boost, + NOUVEAU_THERM_THRS_FANBOOST); + intr &= ~0x008; + } + + /* THRS_2 : critical */ + if (intr & 0x010) { + nv50_therm_threshold_hyst_emulation(therm, 0x204c0, 22, + &sensor->thrs_critical, + NOUVEAU_THERM_THRS_CRITICAL); + intr &= ~0x010; + } + + if (intr) + nv_error(therm, "unhandled intr 0x%08x\n", intr); + + /* ACK everything */ + nv_wr32(therm, 0x20100, 0xffffffff); + nv_wr32(therm, 0x1100, 0x10000); /* PBUS */ + + spin_unlock_irqrestore(&priv->sensor.alarm_program_lock, flags); +} + static int nv50_therm_ctor(struct nouveau_object *parent, struct nouveau_object *engine, @@ -143,6 +278,24 @@ nv50_therm_ctor(struct nouveau_object *parent, priv->base.base.pwm_set = nv50_fan_pwm_set; priv->base.base.pwm_clock = nv50_fan_pwm_clock; priv->base.base.temp_get = nv50_temp_get; + priv->base.sensor.program_alarms = nv50_therm_program_alarms; + spin_lock_init(&priv->base.sensor.alarm_program_lock); + nv_subdev(priv)->intr = nv50_therm_intr; + + /* init the thresholds */ + nouveau_therm_sensor_set_threshold_state(&priv->base.base, + NOUVEAU_THERM_THRS_SHUTDOWN, + NOUVEAU_THERM_THRS_LOWER); + nouveau_therm_sensor_set_threshold_state(&priv->base.base, + NOUVEAU_THERM_THRS_FANBOOST, + NOUVEAU_THERM_THRS_LOWER); + nouveau_therm_sensor_set_threshold_state(&priv->base.base, + NOUVEAU_THERM_THRS_CRITICAL, + NOUVEAU_THERM_THRS_LOWER); + nouveau_therm_sensor_set_threshold_state(&priv->base.base, + NOUVEAU_THERM_THRS_DOWNCLOCK, + NOUVEAU_THERM_THRS_LOWER); + return nouveau_therm_preinit(&priv->base.base); } diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/nva3.c b/drivers/gpu/drm/nouveau/core/subdev/therm/nva3.c index 8625d219f5ca..2dcc5437116a 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/nva3.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/nva3.c @@ -83,6 +83,7 @@ nva3_therm_ctor(struct nouveau_object *parent, priv->base.base.pwm_clock = nv50_fan_pwm_clock; priv->base.base.temp_get = nv50_temp_get; priv->base.base.fan_sense = nva3_therm_fan_sense; + priv->base.sensor.program_alarms = nouveau_therm_program_alarms_polling; return nouveau_therm_preinit(&priv->base.base); } diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/nvd0.c b/drivers/gpu/drm/nouveau/core/subdev/therm/nvd0.c index e722dcd4e37b..d7d30ee8332e 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/nvd0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/nvd0.c @@ -137,6 +137,7 @@ nvd0_therm_ctor(struct nouveau_object *parent, priv->base.base.pwm_clock = nvd0_fan_pwm_clock; priv->base.base.temp_get = nv50_temp_get; priv->base.base.fan_sense = nva3_therm_fan_sense; + priv->base.sensor.program_alarms = nouveau_therm_program_alarms_polling; return nouveau_therm_preinit(&priv->base.base); } diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h b/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h index 5c628b5832e6..c2413e6aae25 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h @@ -50,6 +50,24 @@ struct nouveau_fan { struct dcb_gpio_func tach; }; +enum nouveau_therm_thrs_direction { + NOUVEAU_THERM_THRS_FALLING = 0, + NOUVEAU_THERM_THRS_RISING = 1 +}; + +enum nouveau_therm_thrs_state { + NOUVEAU_THERM_THRS_LOWER = 0, + NOUVEAU_THERM_THRS_HIGHER = 1 +}; + +enum nouveau_therm_thrs { + NOUVEAU_THERM_THRS_FANBOOST = 0, + NOUVEAU_THERM_THRS_DOWNCLOCK = 1, + NOUVEAU_THERM_THRS_CRITICAL = 2, + NOUVEAU_THERM_THRS_SHUTDOWN = 3, + NOUVEAU_THERM_THRS_NR +}; + struct nouveau_therm_priv { struct nouveau_therm base; @@ -65,10 +83,25 @@ struct nouveau_therm_priv { /* fan priv */ struct nouveau_fan *fan; + /* alarms priv */ + struct { + spinlock_t alarm_program_lock; + struct nouveau_alarm therm_poll_alarm; + enum nouveau_therm_thrs_state alarm_state[NOUVEAU_THERM_THRS_NR]; + void (*program_alarms)(struct nouveau_therm *); + } sensor; + + /* what should be done if the card overheats */ + struct { + void (*downclock)(struct nouveau_therm *, bool active); + void (*pause)(struct nouveau_therm *, bool active); + } emergency; + /* ic */ struct i2c_client *ic; }; +int nouveau_therm_mode(struct nouveau_therm *therm, int mode); int nouveau_therm_attr_get(struct nouveau_therm *therm, enum nouveau_therm_attr_type type); int nouveau_therm_attr_set(struct nouveau_therm *therm, @@ -88,6 +121,17 @@ int nouveau_therm_fan_sense(struct nouveau_therm *therm); int nouveau_therm_preinit(struct nouveau_therm *); +void nouveau_therm_sensor_set_threshold_state(struct nouveau_therm *therm, + enum nouveau_therm_thrs thrs, + enum nouveau_therm_thrs_state st); +enum nouveau_therm_thrs_state +nouveau_therm_sensor_get_threshold_state(struct nouveau_therm *therm, + enum nouveau_therm_thrs thrs); +void nouveau_therm_sensor_event(struct nouveau_therm *therm, + enum nouveau_therm_thrs thrs, + enum nouveau_therm_thrs_direction dir); +void nouveau_therm_program_alarms_polling(struct nouveau_therm *therm); + int nv50_fan_pwm_ctrl(struct nouveau_therm *, int, bool); int nv50_fan_pwm_get(struct nouveau_therm *, int, u32 *, u32 *); int nv50_fan_pwm_set(struct nouveau_therm *, int, u32, u32); diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c index 204282301fb1..d80c572de04f 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c @@ -65,12 +65,150 @@ nouveau_therm_temp_safety_checks(struct nouveau_therm *therm) priv->bios_sensor.offset_den = 1; } +/* must be called with alarm_program_lock taken ! */ +void nouveau_therm_sensor_set_threshold_state(struct nouveau_therm *therm, + enum nouveau_therm_thrs thrs, + enum nouveau_therm_thrs_state st) +{ + struct nouveau_therm_priv *priv = (void *)therm; + priv->sensor.alarm_state[thrs] = st; +} + +/* must be called with alarm_program_lock taken ! */ +enum nouveau_therm_thrs_state +nouveau_therm_sensor_get_threshold_state(struct nouveau_therm *therm, + enum nouveau_therm_thrs thrs) +{ + struct nouveau_therm_priv *priv = (void *)therm; + return priv->sensor.alarm_state[thrs]; +} + +void nouveau_therm_sensor_event(struct nouveau_therm *therm, + enum nouveau_therm_thrs thrs, + enum nouveau_therm_thrs_direction dir) +{ + struct nouveau_therm_priv *priv = (void *)therm; + bool active; + const char *thresolds[] = { + "fanboost", "downclock", "critical", "shutdown" + }; + uint8_t temperature = therm->temp_get(therm); + + if (thrs < 0 || thrs > 3) + return; + + if (dir == NOUVEAU_THERM_THRS_FALLING) + nv_info(therm, "temperature (%u C) went bellow the '%s' threshold\n", + temperature, thresolds[thrs]); + else + nv_info(therm, "temperature (%u C) hit the '%s' threshold\n", + temperature, thresolds[thrs]); + + active = (dir == NOUVEAU_THERM_THRS_RISING); + switch (thrs) { + case NOUVEAU_THERM_THRS_FANBOOST: + nouveau_therm_fan_set(therm, true, 100); + nouveau_therm_mode(therm, FAN_CONTROL_AUTO); + break; + case NOUVEAU_THERM_THRS_DOWNCLOCK: + if (priv->emergency.downclock) + priv->emergency.downclock(therm, active); + break; + case NOUVEAU_THERM_THRS_CRITICAL: + if (priv->emergency.pause) + priv->emergency.pause(therm, active); + break; + case NOUVEAU_THERM_THRS_SHUTDOWN: + orderly_poweroff(true); + break; + case NOUVEAU_THERM_THRS_NR: + break; + } + +} + +/* must be called with alarm_program_lock taken ! */ +static void +nouveau_therm_threshold_hyst_polling(struct nouveau_therm *therm, + const struct nvbios_therm_threshold *thrs, + enum nouveau_therm_thrs thrs_name) +{ + enum nouveau_therm_thrs_direction direction; + enum nouveau_therm_thrs_state prev_state, new_state; + int temp = therm->temp_get(therm); + + prev_state = nouveau_therm_sensor_get_threshold_state(therm, thrs_name); + + if (temp >= thrs->temp && prev_state == NOUVEAU_THERM_THRS_LOWER) { + direction = NOUVEAU_THERM_THRS_RISING; + new_state = NOUVEAU_THERM_THRS_HIGHER; + } else if (temp <= thrs->temp - thrs->hysteresis && + prev_state == NOUVEAU_THERM_THRS_HIGHER) { + direction = NOUVEAU_THERM_THRS_FALLING; + new_state = NOUVEAU_THERM_THRS_LOWER; + } else + return; /* nothing to do */ + + nouveau_therm_sensor_set_threshold_state(therm, thrs_name, new_state); + nouveau_therm_sensor_event(therm, thrs_name, direction); +} + +static void +alarm_timer_callback(struct nouveau_alarm *alarm) +{ + struct nouveau_therm_priv *priv = + container_of(alarm, struct nouveau_therm_priv, sensor.therm_poll_alarm); + struct nvbios_therm_sensor *sensor = &priv->bios_sensor; + struct nouveau_timer *ptimer = nouveau_timer(priv); + struct nouveau_therm *therm = &priv->base; + unsigned long flags; + + spin_lock_irqsave(&priv->sensor.alarm_program_lock, flags); + + nouveau_therm_threshold_hyst_polling(therm, &sensor->thrs_fan_boost, + NOUVEAU_THERM_THRS_FANBOOST); + + nouveau_therm_threshold_hyst_polling(therm, &sensor->thrs_down_clock, + NOUVEAU_THERM_THRS_DOWNCLOCK); + + nouveau_therm_threshold_hyst_polling(therm, &sensor->thrs_critical, + NOUVEAU_THERM_THRS_CRITICAL); + + nouveau_therm_threshold_hyst_polling(therm, &sensor->thrs_shutdown, + NOUVEAU_THERM_THRS_SHUTDOWN); + + /* schedule the next poll in one second */ + if (list_empty(&alarm->head)) + ptimer->alarm(ptimer, 1000 * 1000 * 1000, alarm); + + spin_unlock_irqrestore(&priv->sensor.alarm_program_lock, flags); +} + +void +nouveau_therm_program_alarms_polling(struct nouveau_therm *therm) +{ + struct nouveau_therm_priv *priv = (void *)therm; + struct nvbios_therm_sensor *sensor = &priv->bios_sensor; + + nv_info(therm, + "programmed thresholds [ %d(%d), %d(%d), %d(%d), %d(%d) ]\n", + sensor->thrs_fan_boost.temp, sensor->thrs_fan_boost.hysteresis, + sensor->thrs_down_clock.temp, + sensor->thrs_down_clock.hysteresis, + sensor->thrs_critical.temp, sensor->thrs_critical.hysteresis, + sensor->thrs_shutdown.temp, sensor->thrs_shutdown.hysteresis); + + alarm_timer_callback(&priv->sensor.therm_poll_alarm); +} + int nouveau_therm_sensor_ctor(struct nouveau_therm *therm) { struct nouveau_therm_priv *priv = (void *)therm; struct nouveau_bios *bios = nouveau_bios(therm); + nouveau_alarm_init(&priv->sensor.therm_poll_alarm, alarm_timer_callback); + nouveau_therm_temp_set_defaults(therm); if (nvbios_therm_sensor_parse(bios, NVBIOS_THERM_DOMAIN_CORE, &priv->bios_sensor))