Commit b6cee654 authored by Dikshita Agarwal's avatar Dikshita Agarwal Committed by Ulf Hansson
Browse files

PM: domains: add device managed version of dev_pm_domain_attach|detach_list() 



Add the devres-enabled version of dev_pm_domain_attach|detach_list.
If client drivers use devm_pm_domain_attach_list() to attach the PM domains,
devm_pm_domain_detach_list() will be invoked implicitly during remove phase.

Signed-off-by: default avatarDikshita Agarwal <quic_dikshita@quicinc.com>
Link: https://lore.kernel.org/r/1724063350-11993-2-git-send-email-quic_dikshita@quicinc.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent cfee1b50

drivers/base/power/common.c

+45 −0
Original line number Diff line number Diff line
@@ -276,6 +276,51 @@ int dev_pm_domain_attach_list(struct device *dev, 
}

EXPORT_SYMBOL_GPL(dev_pm_domain_attach_list);



/**

 * devm_pm_domain_detach_list - devres-enabled version of dev_pm_domain_detach_list.

 * @_list: The list of PM domains to detach.

 *

 * This function reverse the actions from devm_pm_domain_attach_list().

 * it will be invoked during the remove phase from drivers implicitly if driver

 * uses devm_pm_domain_attach_list() to attach the PM domains.

 */

static void devm_pm_domain_detach_list(void *_list)

{

	struct dev_pm_domain_list *list = _list;



	dev_pm_domain_detach_list(list);

}



/**

 * devm_pm_domain_attach_list - devres-enabled version of dev_pm_domain_attach_list

 * @dev: The device used to lookup the PM domains for.

 * @data: The data used for attaching to the PM domains.

 * @list: An out-parameter with an allocated list of attached PM domains.

 *

 * NOTE: this will also handle calling devm_pm_domain_detach_list() for

 * you during remove phase.

 *

 * Returns the number of attached PM domains or a negative error code in case of

 * a failure.

 */

int devm_pm_domain_attach_list(struct device *dev,

			       const struct dev_pm_domain_attach_data *data,

			       struct dev_pm_domain_list **list)

{

	int ret, num_pds;



	num_pds = dev_pm_domain_attach_list(dev, data, list);

	if (num_pds <= 0)

		return num_pds;



	ret = devm_add_action_or_reset(dev, devm_pm_domain_detach_list, *list);

	if (ret)

		return ret;



	return num_pds;

}

EXPORT_SYMBOL_GPL(devm_pm_domain_attach_list);



/**

 * dev_pm_domain_detach - Detach a device from its PM domain.

 * @dev: Device to detach.

include/linux/pm_domain.h

+11 −0
Original line number Diff line number Diff line
@@ -476,6 +476,9 @@ struct device *dev_pm_domain_attach_by_name(struct device *dev, 
int dev_pm_domain_attach_list(struct device *dev,

			      const struct dev_pm_domain_attach_data *data,

			      struct dev_pm_domain_list **list);

int devm_pm_domain_attach_list(struct device *dev,

			       const struct dev_pm_domain_attach_data *data,

			       struct dev_pm_domain_list **list);

void dev_pm_domain_detach(struct device *dev, bool power_off);

void dev_pm_domain_detach_list(struct dev_pm_domain_list *list);

int dev_pm_domain_start(struct device *dev);
@@ -502,6 +505,14 @@ static inline int dev_pm_domain_attach_list(struct device *dev, 
{

	return 0;

}



static inline int devm_pm_domain_attach_list(struct device *dev,

					     const struct dev_pm_domain_attach_data *data,

					     struct dev_pm_domain_list **list)

{

	return 0;

}



static inline void dev_pm_domain_detach(struct device *dev, bool power_off) {}

static inline void dev_pm_domain_detach_list(struct dev_pm_domain_list *list) {}

static inline int dev_pm_domain_start(struct device *dev)