Commit 69b1af17 authored by Viresh Kumar's avatar Viresh Kumar
Browse files

OPP: Add dev_pm_opp_get_supplies() 



We already have an API for getting voltage information for a single
regulator, dev_pm_opp_get_voltage(), but there is nothing available for
multiple regulator case.

This patch adds a new API, dev_pm_opp_get_supplies(), to get all
information related to the supplies for an OPP.

Tested-by: default avatarDmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent c522ce8a

drivers/opp/core.c

+25 −0
Original line number Diff line number Diff line
@@ -117,6 +117,31 @@ unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) 
}

EXPORT_SYMBOL_GPL(dev_pm_opp_get_voltage);



/**

 * dev_pm_opp_get_supplies() - Gets the supply information corresponding to an opp

 * @opp:	opp for which voltage has to be returned for

 * @supplies:	Placeholder for copying the supply information.

 *

 * Return: negative error number on failure, 0 otherwise on success after

 * setting @supplies.

 *

 * This can be used for devices with any number of power supplies. The caller

 * must ensure the @supplies array must contain space for each regulator.

 */

int dev_pm_opp_get_supplies(struct dev_pm_opp *opp,

			    struct dev_pm_opp_supply *supplies)

{

	if (IS_ERR_OR_NULL(opp) || !supplies) {

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

		return -EINVAL;

	}



	memcpy(supplies, opp->supplies,

	       sizeof(*supplies) * opp->opp_table->regulator_count);

	return 0;

}

EXPORT_SYMBOL_GPL(dev_pm_opp_get_supplies);



/**

 * dev_pm_opp_get_power() - Gets the power corresponding to an opp

 * @opp:	opp for which power has to be returned for

include/linux/pm_opp.h

+7 −0
Original line number Diff line number Diff line
@@ -129,6 +129,8 @@ void dev_pm_opp_put_opp_table(struct opp_table *opp_table); 


unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);



int dev_pm_opp_get_supplies(struct dev_pm_opp *opp, struct dev_pm_opp_supply *supplies);



unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp);



unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
@@ -217,6 +219,11 @@ static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) 
	return 0;

}



static inline int dev_pm_opp_get_supplies(struct dev_pm_opp *opp, struct dev_pm_opp_supply *supplies)

{

	return -EOPNOTSUPP;

}



static inline unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp)

{

	return 0;