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Commit 463643b6 authored by Vladimir Razgulin's avatar Vladimir Razgulin
Browse files

PM / devfreq: Add a new target flag for the performance governor 



The new flag for the devfreq profile->target() function is used
by the performance governor to notify the driver that the device
should wakeup on the max frequency.

Change-Id: I91c2d649177bdd1841a087a2125d1cdbc979f5c1
Signed-off-by: default avatarVladimir Razgulin <vrazguli@codeaurora.org>
parent 7b6446cc

drivers/devfreq/governor_performance.c

+17 −4
Original line number Diff line number Diff line
@@ -32,13 +32,26 @@ static int devfreq_performance_handler(struct devfreq *devfreq, 
				unsigned int event, void *data)

{

	int ret = 0;

	unsigned long freq;



	if (event == DEVFREQ_GOV_START || event == DEVFREQ_GOV_RESUME) {

	mutex_lock(&devfreq->lock);

	freq = devfreq->previous_freq;

	switch (event) {

	case DEVFREQ_GOV_START:

		devfreq->profile->target(devfreq->dev.parent,

				&freq,

				DEVFREQ_FLAG_WAKEUP_MAXFREQ);

		/* fall through */

	case DEVFREQ_GOV_RESUME:

		ret = update_devfreq(devfreq);

		mutex_unlock(&devfreq->lock);

		break;

	case DEVFREQ_GOV_SUSPEND:

		devfreq->profile->target(devfreq->dev.parent,

				&freq,

				DEVFREQ_FLAG_WAKEUP_MAXFREQ);

		break;

	}



	mutex_unlock(&devfreq->lock);

	return ret;

}

include/linux/devfreq.h

+1 −0
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ struct devfreq_dev_status { 
 * bound (greatest lower bound)

 */

#define DEVFREQ_FLAG_LEAST_UPPER_BOUND		0x1

#define DEVFREQ_FLAG_WAKEUP_MAXFREQ		0x2



#define DEVFREQ_FLAG_FAST_HINT	0x2

#define DEVFREQ_FLAG_SLOW_HINT	0x4