diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/opp/core.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index b29f31146770..64a95aaa90eb 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -146,6 +146,28 @@ 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 * |