diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 07341050d57f6678b7f3ee5a15dcf85625e1d3a1..2af958dc17ba6b8623885f2f6cf7f690ac9b35ea 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -646,6 +646,34 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, } EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_exact); +/** + * dev_pm_opp_find_freq_exact_indexed() - Search for an exact freq for the + * clock corresponding to the index + * @dev: Device for which we do this operation + * @freq: frequency to search for + * @index: Clock index + * @available: true/false - match for available opp + * + * Search for the matching exact OPP for the clock corresponding to the + * specified index from a starting freq for a device. + * + * Return: matching *opp , else returns ERR_PTR in case of error and should be + * handled using IS_ERR. Error return values can be: + * EINVAL: for bad pointer + * ERANGE: no match found for search + * ENODEV: if device not found in list of registered devices + * + * The callers are required to call dev_pm_opp_put() for the returned OPP after + * use. + */ +struct dev_pm_opp * +dev_pm_opp_find_freq_exact_indexed(struct device *dev, unsigned long freq, + u32 index, bool available) +{ + return _find_key_exact(dev, freq, index, available, _read_freq, NULL); +} +EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_exact_indexed); + static noinline struct dev_pm_opp *_find_freq_ceil(struct opp_table *opp_table, unsigned long *freq) { diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index a13a1705df57b5079445895690b05cfea526ad3b..23e4e4eaaa42745d65d623680cfff70ce575343a 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -124,6 +124,10 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, unsigned long freq, bool available); +struct dev_pm_opp * +dev_pm_opp_find_freq_exact_indexed(struct device *dev, unsigned long freq, + u32 index, bool available); + struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, unsigned long *freq); @@ -268,6 +272,13 @@ static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, return ERR_PTR(-EOPNOTSUPP); } +static inline struct dev_pm_opp * +dev_pm_opp_find_freq_exact_indexed(struct device *dev, unsigned long freq, + u32 index, bool available) +{ + return ERR_PTR(-EOPNOTSUPP); +} + static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, unsigned long *freq) {