Commit a5893928 authored by Viresh Kumar's avatar Viresh Kumar
Browse files

OPP: Add dev_pm_opp_find_freq_exact_indexed() 



The indexed version of the API is added for other floor and ceil, add
the same for exact as well for completeness.

Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent 5f756d03

drivers/opp/core.c

+28 −0
Original line number Diff line number Diff line
@@ -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)

{

include/linux/pm_opp.h

+11 −0
Original line number Diff line number Diff line
@@ -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)

{