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Commit e2f4b5f8 authored by Viresh Kumar's avatar Viresh Kumar
Browse files

PM / OPP: Implement dev_pm_opp_get_of_node() 



This adds a new helper to let the power domain drivers to access
opp->np, so that they can read platform specific properties from the
node.

Signed-off-by: default avatarJordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: default avatarRajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent a88bd2a5

drivers/opp/of.c

+19 −0
Original line number Diff line number Diff line
@@ -727,3 +727,22 @@ struct dev_pm_opp *of_dev_pm_opp_find_required_opp(struct device *dev, 
	return opp;

}

EXPORT_SYMBOL_GPL(of_dev_pm_opp_find_required_opp);



/**

 * dev_pm_opp_get_of_node() - Gets the DT node corresponding to an opp

 * @opp:	opp for which DT node has to be returned for

 *

 * Return: DT node corresponding to the opp, else 0 on success.

 *

 * The caller needs to put the node with of_node_put() after using it.

 */

struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp)

{

	if (IS_ERR_OR_NULL(opp)) {

		pr_err("%s: Invalid parameters\n", __func__);

		return NULL;

	}



	return of_node_get(opp->np);

}

EXPORT_SYMBOL_GPL(dev_pm_opp_get_of_node);

include/linux/pm_opp.h

+5 −0
Original line number Diff line number Diff line
@@ -310,6 +310,7 @@ void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask); 
int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);

struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev);

struct dev_pm_opp *of_dev_pm_opp_find_required_opp(struct device *dev, struct device_node *np);

struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp);

#else

static inline int dev_pm_opp_of_add_table(struct device *dev)

{
@@ -348,6 +349,10 @@ static inline struct dev_pm_opp *of_dev_pm_opp_find_required_opp(struct device * 
{

	return NULL;

}

static inline struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp)

{

	return NULL;

}

#endif



#endif		/* __LINUX_OPP_H__ */