diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 3392fcb92796..e381d521c355 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -34,6 +34,7 @@ #include #include #include +#include #include #include @@ -1055,7 +1056,8 @@ static struct class thermal_class = { }; /** - * thermal_cooling_device_register() - register a new thermal cooling device + * __thermal_cooling_device_register() - register a new thermal cooling device + * @np: a pointer to a device tree node. * @type: the thermal cooling device type. * @devdata: device private data. * @ops: standard thermal cooling devices callbacks. @@ -1063,13 +1065,16 @@ static struct class thermal_class = { * This interface function adds a new thermal cooling device (fan/processor/...) * to /sys/class/thermal/ folder as cooling_device[0-*]. It tries to bind itself * to all the thermal zone devices registered at the same time. + * It also gives the opportunity to link the cooling device to a device tree + * node, so that it can be bound to a thermal zone created out of device tree. * * Return: a pointer to the created struct thermal_cooling_device or an * ERR_PTR. Caller must check return value with IS_ERR*() helpers. */ -struct thermal_cooling_device * -thermal_cooling_device_register(char *type, void *devdata, - const struct thermal_cooling_device_ops *ops) +static struct thermal_cooling_device * +__thermal_cooling_device_register(struct device_node *np, + char *type, void *devdata, + const struct thermal_cooling_device_ops *ops) { struct thermal_cooling_device *cdev; int result; @@ -1094,6 +1099,7 @@ thermal_cooling_device_register(char *type, void *devdata, strlcpy(cdev->type, type ? : "", sizeof(cdev->type)); mutex_init(&cdev->lock); INIT_LIST_HEAD(&cdev->thermal_instances); + cdev->np = np; cdev->ops = ops; cdev->updated = true; cdev->device.class = &thermal_class; @@ -1136,8 +1142,52 @@ unregister: device_unregister(&cdev->device); return ERR_PTR(result); } + +/** + * thermal_cooling_device_register() - register a new thermal cooling device + * @type: the thermal cooling device type. + * @devdata: device private data. + * @ops: standard thermal cooling devices callbacks. + * + * This interface function adds a new thermal cooling device (fan/processor/...) + * to /sys/class/thermal/ folder as cooling_device[0-*]. It tries to bind itself + * to all the thermal zone devices registered at the same time. + * + * Return: a pointer to the created struct thermal_cooling_device or an + * ERR_PTR. Caller must check return value with IS_ERR*() helpers. + */ +struct thermal_cooling_device * +thermal_cooling_device_register(char *type, void *devdata, + const struct thermal_cooling_device_ops *ops) +{ + return __thermal_cooling_device_register(NULL, type, devdata, ops); +} EXPORT_SYMBOL_GPL(thermal_cooling_device_register); +/** + * thermal_of_cooling_device_register() - register an OF thermal cooling device + * @np: a pointer to a device tree node. + * @type: the thermal cooling device type. + * @devdata: device private data. + * @ops: standard thermal cooling devices callbacks. + * + * This function will register a cooling device with device tree node reference. + * This interface function adds a new thermal cooling device (fan/processor/...) + * to /sys/class/thermal/ folder as cooling_device[0-*]. It tries to bind itself + * to all the thermal zone devices registered at the same time. + * + * Return: a pointer to the created struct thermal_cooling_device or an + * ERR_PTR. Caller must check return value with IS_ERR*() helpers. + */ +struct thermal_cooling_device * +thermal_of_cooling_device_register(struct device_node *np, + char *type, void *devdata, + const struct thermal_cooling_device_ops *ops) +{ + return __thermal_cooling_device_register(np, type, devdata, ops); +} +EXPORT_SYMBOL_GPL(thermal_of_cooling_device_register); + /** * thermal_cooling_device_unregister - removes the registered thermal cooling device * @cdev: the thermal cooling device to remove. diff --git a/include/linux/thermal.h b/include/linux/thermal.h index b780c5b27122..f7e11c7ea7d9 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -25,6 +25,7 @@ #ifndef __THERMAL_H__ #define __THERMAL_H__ +#include #include #include #include @@ -280,6 +281,9 @@ void thermal_zone_device_update(struct thermal_zone_device *); struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, const struct thermal_cooling_device_ops *); +struct thermal_cooling_device * +thermal_of_cooling_device_register(struct device_node *np, char *, void *, + const struct thermal_cooling_device_ops *); void thermal_cooling_device_unregister(struct thermal_cooling_device *); struct thermal_zone_device *thermal_zone_get_zone_by_name(const char *name); int thermal_zone_get_temp(struct thermal_zone_device *tz, unsigned long *temp);