Commit a0242c81 authored by Krishna chaitanya chundru's avatar Krishna chaitanya chundru Committed by Viresh Kumar
Browse files

OPP: Add dev_pm_opp_find_level_floor() 



Add dev_pm_opp_find_level_floor(), as is done for frequency and
bandwidth.

Signed-off-by: default avatarKrishna chaitanya chundru <quic_krichai@quicinc.com>
[ Viresh: Updated commit log and rearranged code ]
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
parent 0025ff64

drivers/opp/core.c

+25 −0
Original line number Diff line number Diff line
@@ -813,6 +813,31 @@ struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev, 
}

EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_ceil);



/**

 * dev_pm_opp_find_level_floor() - Search for a rounded floor level

 * @dev:	device for which we do this operation

 * @level:	Start level

 *

 * Search for the matching floor *available* OPP from a starting level

 * for a device.

 *

 * Return: matching *opp and refreshes *level accordingly, 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_level_floor(struct device *dev,

					       unsigned long *level)

{

	return _find_key_floor(dev, level, 0, true, _read_level, NULL);

}

EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_floor);



/**

 * dev_pm_opp_find_bw_ceil() - Search for a rounded ceil bandwidth

 * @dev:	device for which we do this operation

include/linux/pm_opp.h

+9 −0
Original line number Diff line number Diff line
@@ -156,6 +156,9 @@ struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev, 
struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,

					      unsigned int *level);



struct dev_pm_opp *dev_pm_opp_find_level_floor(struct device *dev,

					       unsigned long *level);



struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev,

					   unsigned int *bw, int index);
@@ -320,6 +323,12 @@ static inline struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev, 
	return ERR_PTR(-EOPNOTSUPP);

}



static inline struct dev_pm_opp *dev_pm_opp_find_level_floor(struct device *dev,

							     unsigned long *level)

{

	return ERR_PTR(-EOPNOTSUPP);

}



static inline struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev,

					unsigned int *bw, int index)

{