Commit 597ff543 authored by Dmitry Osipenko's avatar Dmitry Osipenko Committed by Viresh Kumar
Browse files

opp: Add dev_pm_opp_get_required_pstate() 



Add dev_pm_opp_get_required_pstate() which allows OPP users to retrieve
required performance state of a given OPP.

Tested-by: default avatarPeter Geis <pgwipeout@gmail.com>
Tested-by: default avatarNicolas Chauvet <kwizart@gmail.com>
Tested-by: default avatarMatt Merhar <mattmerhar@protonmail.com>
Signed-off-by: default avatarDmitry Osipenko <digetx@gmail.com>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent 8dd5cada

drivers/opp/core.c

+22 −0
Original line number Diff line number Diff line
@@ -145,6 +145,28 @@ unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp) 
}

EXPORT_SYMBOL_GPL(dev_pm_opp_get_level);



/**

 * dev_pm_opp_get_required_pstate() - Gets the required performance state

 *                                    corresponding to an available opp

 * @opp:	opp for which performance state has to be returned for

 * @index:	index of the required opp

 *

 * Return: performance state read from device tree corresponding to the

 * required opp, else return 0.

 */

unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp,

					    unsigned int index)

{

	if (IS_ERR_OR_NULL(opp) || !opp->available ||

	    index >= opp->opp_table->required_opp_count) {

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

		return 0;

	}



	return opp->required_opps[index]->pstate;

}

EXPORT_SYMBOL_GPL(dev_pm_opp_get_required_pstate);



/**

 * dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not

 * @opp: opp for which turbo mode is being verified

include/linux/pm_opp.h

+10 −0
Original line number Diff line number Diff line
@@ -98,6 +98,9 @@ unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp); 


unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp);



unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp,

					    unsigned int index);



bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp);



int dev_pm_opp_get_opp_count(struct device *dev);
@@ -186,6 +189,13 @@ static inline unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp) 
	return 0;

}



static inline

unsigned int dev_pm_opp_get_required_pstate(struct dev_pm_opp *opp,

					    unsigned int index)

{

	return 0;

}



static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)

{

	return false;