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Commit c0f90379 authored by George Lee's avatar George Lee Committed by Hridya Valsaraju
Browse files

ANDROID: GKI: Thermal: thermal_zone_get_cdev_by_name added 



thermal_zone_get_cdev_by_name added to thermal_core for cooling device
querying by name.

Bug: 128625129
Bug: 143740346
Bug: 149945768
Test: build
Change-Id: I3253e61800f8514769d1efc33111dec1e9000e26
Signed-off-by: default avatarGeorge Lee <geolee@google.com>
(cherry picked from commit e1a515b24088b0051506fa7d54c5b9d6e6b870b0)
Signed-off-by: default avatarTeYuan Wang <kamewang@google.com>
(cherry picked from commit 5e9b1d82fd78cc6e91d18892e117341fa36ad315)
Signed-off-by: default avatarHridya Valsaraju <hridya@google.com>
parent 69672dd5

drivers/thermal/thermal_core.c

+37 −0
Original line number Diff line number Diff line
@@ -1430,6 +1430,43 @@ struct thermal_zone_device *thermal_zone_get_zone_by_name(const char *name) 
}

EXPORT_SYMBOL_GPL(thermal_zone_get_zone_by_name);



/**

 * thermal_zone_get_cdev_by_name() - search for a cooling device and returns

 * its ref.

 * @name: thermal cdev name to fetch the temperature

 *

 * When only one cdev is found with the passed name, returns a reference to it.

 *

 * Return: On success returns a reference to an unique thermal cooling device

 * with matching name equals to @name, an ERR_PTR otherwise (-EINVAL for

 * invalid paramenters, -ENODEV for not found and -EEXIST for multiple matches).

 */

struct thermal_cooling_device *thermal_zone_get_cdev_by_name(const char *name)

{

	struct thermal_cooling_device *pos = NULL, *ref = ERR_PTR(-EINVAL);

	unsigned int found = 0;



	if (!name)

		return ref;



	mutex_lock(&thermal_list_lock);

	list_for_each_entry(pos, &thermal_cdev_list, node)

		if (!strncasecmp(name, pos->type, THERMAL_NAME_LENGTH)) {

			found++;

			ref = pos;

		}

	mutex_unlock(&thermal_list_lock);



	/* nothing has been found, thus an error code for it */

	if (found == 0)

		return ERR_PTR(-ENODEV);

	if (found > 1)

		return ERR_PTR(-EEXIST);

	return ref;



}

EXPORT_SYMBOL_GPL(thermal_zone_get_cdev_by_name);



#ifdef CONFIG_NET

static const struct genl_multicast_group thermal_event_mcgrps[] = {

	{ .name = THERMAL_GENL_MCAST_GROUP_NAME, },

include/linux/thermal.h

+4 −0
Original line number Diff line number Diff line
@@ -527,6 +527,7 @@ 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);

struct thermal_cooling_device *thermal_zone_get_cdev_by_name(const char *name);

int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp);

int thermal_zone_get_slope(struct thermal_zone_device *tz);

int thermal_zone_get_offset(struct thermal_zone_device *tz);
@@ -591,6 +592,9 @@ static inline void thermal_cooling_device_unregister( 
static inline struct thermal_zone_device *thermal_zone_get_zone_by_name(

		const char *name)

{ return ERR_PTR(-ENODEV); }

static inline struct thermal_cooling_device *thermal_zone_get_cdev_by_name(

		const char *name)

{ return ERR_PTR(-ENODEV); }

static inline int thermal_zone_get_temp(

		struct thermal_zone_device *tz, int *temp)

{ return -ENODEV; }