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PM / devfreq: Add suspend and resume apis

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Add devfreq suspend/resume apis for devfreq users. This patch
supports suspend and resume of devfreq load monitoring, required
for devices which can idle.

Signed-off-by: Rajagopal Venkat <rajagopal.venkat@linaro.org>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rajagopal Venkat 2012-10-26 01:50:18 +02:00 • committed by Rafael J. Wysocki
parent 7e6fdd4bad
commit 206c30cfeb
4 changed files with 51 additions and 0 deletions
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12
include/linux/devfreq.h
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@ -158,6 +158,8 @@ extern struct devfreq *devfreq_add_device(struct device *dev,
const struct devfreq_governor *governor,
void *data);
extern int devfreq_remove_device(struct devfreq *devfreq);
extern int devfreq_suspend_device(struct devfreq *devfreq);
extern int devfreq_resume_device(struct devfreq *devfreq);
/* Helper functions for devfreq user device driver with OPP. */
extern struct opp *devfreq_recommended_opp(struct device *dev,
@ -211,6 +213,16 @@ static int devfreq_remove_device(struct devfreq *devfreq)
return 0;
}
static int devfreq_suspend_device(struct devfreq *devfreq)
{
return 0;
}
static int devfreq_resume_device(struct devfreq *devfreq)
{
return 0;
}
static struct opp *devfreq_recommended_opp(struct device *dev,
unsigned long *freq, u32 flags)
{