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ALSA: ak411x: Add PM helper functions 

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 <perex@perex.cz>
Tested-by: Pavel Hofman <pavel.hofman@ivitera.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2015-01-13 11:24:08 +01:00
parent a850ef8afd
commit 1293617cdd
5 changed files with 51 additions and 1 deletions
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8
include/sound/ak4113.h
View File

@ -317,5 +317,13 @@ int snd_ak4113_build(struct ak4113 *ak4113,
int snd_ak4113_external_rate(struct ak4113 *ak4113);
int snd_ak4113_check_rate_and_errors(struct ak4113 *ak4113, unsigned int flags);
#ifdef CONFIG_PM
void snd_ak4113_suspend(struct ak4113 *chip);
void snd_ak4113_resume(struct ak4113 *chip);
#else
static inline void snd_ak4113_suspend(struct ak4113 *chip) {}
static inline void snd_ak4113_resume(struct ak4113 *chip) {}
#endif
#endif /* __SOUND_AK4113_H */

8
include/sound/ak4114.h
View File

@ -199,5 +199,13 @@ int snd_ak4114_build(struct ak4114 *ak4114,
int snd_ak4114_external_rate(struct ak4114 *ak4114);
int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags);
#ifdef CONFIG_PM
void snd_ak4114_suspend(struct ak4114 *chip);
void snd_ak4114_resume(struct ak4114 *chip);
#else
static inline void snd_ak4114_suspend(struct ak4114 *chip) {}
static inline void snd_ak4114_resume(struct ak4114 *chip) {}
#endif
#endif /* __SOUND_AK4114_H */

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

4
sound/pci/ice1712/juli.c
View File

@ -491,15 +491,17 @@ static int juli_resume(struct snd_ice1712 *ice)
/* akm4358 un-reset, un-mute */
snd_akm4xxx_reset(ak, 0);
/* reinit ak4114 */
snd_ak4114_reinit(spec->ak4114);
snd_ak4114_resume(spec->ak4114);
return 0;
}
static int juli_suspend(struct snd_ice1712 *ice)
{
struct snd_akm4xxx *ak = ice->akm;
struct juli_spec *spec = ice->spec;
/* akm4358 reset and soft-mute */
snd_akm4xxx_reset(ak, 1);
snd_ak4114_suspend(spec->ak4114);
return 0;
}
#endif