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ALSA: ak411x: Add PM helper functions

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Define snd_ak4114_suspend() and snd_ak4114_resume() functions to
handle PM properly, stopping and restarting the work at PM.
Currently only ice1712/juli.c deals with the PM and ak4114, so fix the
calls there appropriately.

The same PM functions are defined in ak4113.c, too, although they
aren't currently called yet (ice1712/quartet.c may be enhanced to
support PM later).

Acked-by: Jaroslav Kysela <[email protected]>
Tested-by: Pavel Hofman <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
This commit is contained in:
Takashi Iwai 2015-01-13 11:24:08 +01:00
commit 1293617cdd
5 changed files with 51 additions and 1 deletions
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16
sound/i2c/other/ak4113.c
View file

@ -636,3 +636,19 @@ static void ak4113_stats(struct work_struct *work)
if (atomic_dec_and_test(&chip->wq_processing))
schedule_delayed_work(&chip->work, HZ / 10);
}
#ifdef CONFIG_PM
void snd_ak4113_suspend(struct ak4113 *chip)
{
atomic_inc(&chip->wq_processing); /* don't schedule new work */
cancel_delayed_work_sync(&chip->work);
}
EXPORT_SYMBOL(snd_ak4113_suspend);
void snd_ak4113_resume(struct ak4113 *chip)
{
atomic_dec(&chip->wq_processing);
snd_ak4113_reinit(chip);
}
EXPORT_SYMBOL(snd_ak4113_resume);
#endif

16
sound/i2c/other/ak4114.c
View file

@ -621,3 +621,19 @@ static void ak4114_stats(struct work_struct *work)
if (atomic_dec_and_test(&chip->wq_processing))
schedule_delayed_work(&chip->work, HZ / 10);
}
#ifdef CONFIG_PM
void snd_ak4114_suspend(struct ak4114 *chip)
{
atomic_inc(&chip->wq_processing); /* don't schedule new work */
cancel_delayed_work_sync(&chip->work);
}
EXPORT_SYMBOL(snd_ak4114_suspend);
void snd_ak4114_resume(struct ak4114 *chip)
{
atomic_dec(&chip->wq_processing);
snd_ak4114_reinit(chip);
}
EXPORT_SYMBOL(snd_ak4114_resume);
#endif