Commit b4b9e223 authored by Dmitry Osipenko's avatar Dmitry Osipenko Committed by Viresh Kumar
Browse files

opp: Add devm_pm_opp_attach_genpd 



Add resource-managed version of dev_pm_opp_attach_genpd().

Signed-off-by: default avatarDmitry Osipenko <digetx@gmail.com>
[ Viresh: Manually apply the patch and relocate the routines ]
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent a3c47af6

drivers/opp/core.c

+36 −0
Original line number Diff line number Diff line
@@ -2275,6 +2275,42 @@ void dev_pm_opp_detach_genpd(struct opp_table *opp_table) 
}

EXPORT_SYMBOL_GPL(dev_pm_opp_detach_genpd);



static void devm_pm_opp_detach_genpd(void *data)

{

	dev_pm_opp_detach_genpd(data);

}



/**

 * devm_pm_opp_attach_genpd - Attach genpd(s) for the device and save virtual

 *			      device pointer

 * @dev: Consumer device for which the genpd is getting attached.

 * @names: Null terminated array of pointers containing names of genpd to attach.

 * @virt_devs: Pointer to return the array of virtual devices.

 *

 * This is a resource-managed version of dev_pm_opp_attach_genpd().

 *

 * Return: pointer to 'struct opp_table' on success and errorno otherwise.

 */

struct opp_table *

devm_pm_opp_attach_genpd(struct device *dev, const char **names,

			 struct device ***virt_devs)

{

	struct opp_table *opp_table;

	int err;



	opp_table = dev_pm_opp_attach_genpd(dev, names, virt_devs);

	if (IS_ERR(opp_table))

		return opp_table;



	err = devm_add_action_or_reset(dev, devm_pm_opp_detach_genpd,

				       opp_table);

	if (err)

		return ERR_PTR(err);



	return opp_table;

}

EXPORT_SYMBOL_GPL(devm_pm_opp_attach_genpd);



/**

 * dev_pm_opp_xlate_performance_state() - Find required OPP's pstate for src_table.

 * @src_table: OPP table which has dst_table as one of its required OPP table.

include/linux/pm_opp.h

+7 −0
Original line number Diff line number Diff line
@@ -155,6 +155,7 @@ void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table); 
struct opp_table *devm_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));

struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs);

void dev_pm_opp_detach_genpd(struct opp_table *opp_table);

struct opp_table *devm_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs);

int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);

int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);

int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp);
@@ -360,6 +361,12 @@ static inline struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, cons 


static inline void dev_pm_opp_detach_genpd(struct opp_table *opp_table) {}



static inline struct opp_table *devm_pm_opp_attach_genpd(struct device *dev,

				const char **names, struct device ***virt_devs)

{

	return ERR_PTR(-ENOTSUPP);

}



static inline int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate)

{

	return -ENOTSUPP;