diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 16:21:37 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 16:21:37 -0800 |
commit | b109bc72295363fb746bc42bdd777f7a8abb177b (patch) | |
tree | d4ce43634e549ebb3ce37dbe87e46490f840267f /drivers/thermal/thermal_core.c | |
parent | ee249d30fadec7677364063648f5547e243bf93f (diff) | |
parent | 4401117bf7fc11dc738c0963fa0c94814abc8dcd (diff) | |
download | linux-b109bc72295363fb746bc42bdd777f7a8abb177b.tar.bz2 |
Merge tag 'thermal-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux
Pull thermal updates from Daniel Lezcano:
- Add upper and lower limits clamps for the cooling device state in the
power allocator governor (Michael Kao)
- Add upper and lower limits support for the power allocator governor
(Lukasz Luba)
- Optimize conditions testing for the trip points (Bernard Zhao)
- Replace spin_lock_irqsave by spin_lock in hard IRQ on the rcar driver
(Tian Tao)
- Add MT8516 dt-bindings and device reset optional support (Fabien
Parent)
- Add a quiescent period to cool down the PCH when entering S0iX
(Sumeet Pawnikar)
- Use bitmap API instead of re-inventing the wheel on sun8i (Yangtao
Li)
- Remove useless NULL check in the hwmon driver (Bernard Zhao)
- Update the current state in the cpufreq cooling device only if the
frequency change is effective (Zhuguangqing)
- Improve the schema validation for the rcar DT bindings (Geert
Uytterhoeven)
- Fix the user time unit in the documentation (Viresh Kumar)
- Add PCI ids for Lewisburg PCH (Andres Freund)
- Add hwmon support on amlogic (Martin Blumenstingl)
- Fix build failure for PCH entering on in S0iX (Randy Dunlap)
- Improve the k_* coefficient for the power allocator governor (Lukasz
Luba)
- Fix missing const on a sysfs attribute (Rikard Falkeborn)
- Remove broken interrupt support on rcar to be replaced by a new one
(Niklas Söderlund)
- Improve the error code handling at init time on imx8mm (Fabio
Estevam)
- Compute interval validity once instead at each temperature reading
iteration on acerhdf (Daniel Lezcano)
- Add r8a779a0 support (Niklas Söderlund)
- Add PCI ids for AlderLake PCH and mmio refactoring (Srinivas
Pandruvada)
- Add RFIM and mailbox support on int340x (Srinivas Pandruvada)
- Use macro for temperature calculation on PCH (Sumeet Pawnikar)
- Simplify return conditions at probe time on Broadcom (Zheng Yongjun)
- Fix workload name on PCH (Srinivas Pandruvada)
- Migrate the devfreq cooling device code to the energy model API
(Lukasz Luba)
- Emit a warning if the thermal_zone_device_update is called without
the .get_temp() ops (Daniel Lezcano)
- Add critical and hot ops for the thermal zone (Daniel Lezcano)
- Remove notification usage when critical is reached on rcar (Daniel
Lezcano)
- Fix devfreq build when ENERGY_MODEL is not set (Lukasz Luba)
* tag 'thermal-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (45 commits)
thermal/drivers/devfreq_cooling: Fix the build when !ENERGY_MODEL
thermal/drivers/rcar: Remove notification usage
thermal/core: Add critical and hot ops
thermal/core: Emit a warning if the thermal zone is updated without ops
drm/panfrost: Register devfreq cooling and attempt to add Energy Model
thermal: devfreq_cooling: remove old power model and use EM
thermal: devfreq_cooling: add new registration functions with Energy Model
thermal: devfreq_cooling: use a copy of device status
thermal: devfreq_cooling: change tracing function and arguments
thermal: int340x: processor_thermal: Correct workload type name
thermal: broadcom: simplify the return expression of bcm2711_thermal_probe()
thermal: intel: pch: use macro for temperature calculation
thermal: int340x: processor_thermal: Add mailbox driver
thermal: int340x: processor_thermal: Add RFIM driver
thermal: int340x: processor_thermal: Add AlderLake PCI device id
thermal: int340x: processor_thermal: Refactor MMIO interface
thermal: rcar_gen3_thermal: Add r8a779a0 support
dt-bindings: thermal: rcar-gen3-thermal: Add r8a779a0 support
platform/x86/drivers/acerhdf: Check the interval value when it is set
platform/x86/drivers/acerhdf: Use module_param_cb to set/get polling interval
...
Diffstat (limited to 'drivers/thermal/thermal_core.c')
-rw-r--r-- | drivers/thermal/thermal_core.c | 143 |
1 files changed, 32 insertions, 111 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index c6d74bc1c90b..4a291d205d5c 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -380,6 +380,25 @@ static void thermal_emergency_poweroff(void) msecs_to_jiffies(poweroff_delay_ms)); } +void thermal_zone_device_critical(struct thermal_zone_device *tz) +{ + dev_emerg(&tz->device, "%s: critical temperature reached, " + "shutting down\n", tz->type); + + mutex_lock(&poweroff_lock); + if (!power_off_triggered) { + /* + * Queue a backup emergency shutdown in the event of + * orderly_poweroff failure + */ + thermal_emergency_poweroff(); + orderly_poweroff(true); + power_off_triggered = true; + } + mutex_unlock(&poweroff_lock); +} +EXPORT_SYMBOL(thermal_zone_device_critical); + static void handle_critical_trips(struct thermal_zone_device *tz, int trip, enum thermal_trip_type trip_type) { @@ -396,22 +415,10 @@ static void handle_critical_trips(struct thermal_zone_device *tz, if (tz->ops->notify) tz->ops->notify(tz, trip, trip_type); - if (trip_type == THERMAL_TRIP_CRITICAL) { - dev_emerg(&tz->device, - "critical temperature reached (%d C), shutting down\n", - tz->temperature / 1000); - mutex_lock(&poweroff_lock); - if (!power_off_triggered) { - /* - * Queue a backup emergency shutdown in the event of - * orderly_poweroff failure - */ - thermal_emergency_poweroff(); - orderly_poweroff(true); - power_off_triggered = true; - } - mutex_unlock(&poweroff_lock); - } + if (trip_type == THERMAL_TRIP_HOT && tz->ops->hot) + tz->ops->hot(tz); + else if (trip_type == THERMAL_TRIP_CRITICAL) + tz->ops->critical(tz); } static void handle_thermal_trip(struct thermal_zone_device *tz, int trip) @@ -553,7 +560,8 @@ void thermal_zone_device_update(struct thermal_zone_device *tz, if (atomic_read(&in_suspend)) return; - if (!tz->ops->get_temp) + if (WARN_ONCE(!tz->ops->get_temp, "'%s' must not be called without " + "'get_temp' ops set\n", __func__)) return; update_temperature(tz); @@ -593,94 +601,6 @@ static void thermal_zone_device_check(struct work_struct *work) thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED); } -/* - * Power actor section: interface to power actors to estimate power - * - * Set of functions used to interact to cooling devices that know - * how to estimate their devices power consumption. - */ - -/** - * power_actor_get_max_power() - get the maximum power that a cdev can consume - * @cdev: pointer to &thermal_cooling_device - * @max_power: pointer in which to store the maximum power - * - * Calculate the maximum power consumption in milliwats that the - * cooling device can currently consume and store it in @max_power. - * - * Return: 0 on success, -EINVAL if @cdev doesn't support the - * power_actor API or -E* on other error. - */ -int power_actor_get_max_power(struct thermal_cooling_device *cdev, - u32 *max_power) -{ - if (!cdev_is_power_actor(cdev)) - return -EINVAL; - - return cdev->ops->state2power(cdev, 0, max_power); -} - -/** - * power_actor_get_min_power() - get the mainimum power that a cdev can consume - * @cdev: pointer to &thermal_cooling_device - * @min_power: pointer in which to store the minimum power - * - * Calculate the minimum power consumption in milliwatts that the - * cooling device can currently consume and store it in @min_power. - * - * Return: 0 on success, -EINVAL if @cdev doesn't support the - * power_actor API or -E* on other error. - */ -int power_actor_get_min_power(struct thermal_cooling_device *cdev, - u32 *min_power) -{ - unsigned long max_state; - int ret; - - if (!cdev_is_power_actor(cdev)) - return -EINVAL; - - ret = cdev->ops->get_max_state(cdev, &max_state); - if (ret) - return ret; - - return cdev->ops->state2power(cdev, max_state, min_power); -} - -/** - * power_actor_set_power() - limit the maximum power a cooling device consumes - * @cdev: pointer to &thermal_cooling_device - * @instance: thermal instance to update - * @power: the power in milliwatts - * - * Set the cooling device to consume at most @power milliwatts. The limit is - * expected to be a cap at the maximum power consumption. - * - * Return: 0 on success, -EINVAL if the cooling device does not - * implement the power actor API or -E* for other failures. - */ -int power_actor_set_power(struct thermal_cooling_device *cdev, - struct thermal_instance *instance, u32 power) -{ - unsigned long state; - int ret; - - if (!cdev_is_power_actor(cdev)) - return -EINVAL; - - ret = cdev->ops->power2state(cdev, power, &state); - if (ret) - return ret; - - instance->target = state; - mutex_lock(&cdev->lock); - cdev->updated = false; - mutex_unlock(&cdev->lock); - thermal_cdev_update(cdev); - - return 0; -} - void thermal_zone_device_rebind_exception(struct thermal_zone_device *tz, const char *cdev_type, size_t size) { @@ -1423,6 +1343,10 @@ thermal_zone_device_register(const char *type, int trips, int mask, tz->id = id; strlcpy(tz->type, type, sizeof(tz->type)); + + if (!ops->critical) + ops->critical = thermal_zone_device_critical; + tz->ops = ops; tz->tzp = tzp; tz->device.class = &thermal_class; @@ -1446,12 +1370,9 @@ thermal_zone_device_register(const char *type, int trips, int mask, goto release_device; for (count = 0; count < trips; count++) { - if (tz->ops->get_trip_type(tz, count, &trip_type)) - set_bit(count, &tz->trips_disabled); - if (tz->ops->get_trip_temp(tz, count, &trip_temp)) - set_bit(count, &tz->trips_disabled); - /* Check for bogus trip points */ - if (trip_temp == 0) + if (tz->ops->get_trip_type(tz, count, &trip_type) || + tz->ops->get_trip_temp(tz, count, &trip_temp) || + !trip_temp) set_bit(count, &tz->trips_disabled); } |