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

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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: Vladimir Razgulin <vrazguli@codeaurora.org>
This commit is contained in:
Vladimir Razgulin
2013-12-08 16:46:24 -08:00
committed by Bryan Huntsman
parent 5b07f2b4b2
commit 4b38963bc6
2 changed files with 18 additions and 4 deletions
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drivers/devfreq/governor_performance.c
+17 -4
View File
@@ -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);
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
View File
@@ -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