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Commit dd214762 authored by Osvaldo Banuelos's avatar Osvaldo Banuelos
Browse files

power: qcom: apm: add msm_apm_get_supply() to determine APM mode 



Add a function which consumers can call to determine the current
APM supply selection. This is useful in scenarios where consumer
drivers need to determine what the current APM mode is.

Change-Id: I16b7e6814ef98f2119899451f8700998d8ee9c9f
Signed-off-by: default avatarOsvaldo Banuelos <osvaldob@codeaurora.org>
parent 85125f66

drivers/power/qcom/apm.c

+13 −0
Original line number Diff line number Diff line
@@ -392,6 +392,19 @@ static int msm_apm_switch_to_apcc(struct msm_apm_ctrl_dev *ctrl_dev) 
	return ret;

}



/**

 * msm_apm_get_supply() - Returns the supply that is currently

 *			powering the memory arrays

 * @ctrl_dev:                   Pointer to an MSM APM controller device

 *

 * Returns the supply currently selected by the APM.

 */

int msm_apm_get_supply(struct msm_apm_ctrl_dev *ctrl_dev)

{

	return ctrl_dev->supply;

}

EXPORT_SYMBOL(msm_apm_get_supply);



/**

 * msm_apm_set_supply() - Perform the necessary steps to switch the voltage

 *                        source of the memory arrays to a given supply

include/linux/power/qcom/apm.h

+3 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ struct msm_apm_ctrl_dev; 
struct msm_apm_ctrl_dev *msm_apm_ctrl_dev_get(struct device *dev);

int msm_apm_set_supply(struct msm_apm_ctrl_dev *ctrl_dev,

		       enum msm_apm_supply supply);

int msm_apm_get_supply(struct msm_apm_ctrl_dev *ctrl_dev);



#else

static inline struct msm_apm_ctrl_dev *msm_apm_ctrl_dev_get(struct device *dev)
@@ -41,5 +42,7 @@ static inline struct msm_apm_ctrl_dev *msm_apm_ctrl_dev_get(struct device *dev) 
static inline int msm_apm_set_supply(struct msm_apm_ctrl_dev *ctrl_dev,

		       enum msm_apm_supply supply)

{ return -EPERM; }

static inline int msm_apm_get_supply(struct msm_apm_ctrl_dev *ctrl_dev);

{ return -EPERM; }

#endif

#endif