diff options
Diffstat (limited to 'sound/i2c/other/ak4113.c')
| -rw-r--r-- | sound/i2c/other/ak4113.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sound/i2c/other/ak4113.c b/sound/i2c/other/ak4113.c index c6bba99a90b2..88844881cbff 100644 --- a/sound/i2c/other/ak4113.c +++ b/sound/i2c/other/ak4113.c @@ -89,6 +89,7 @@ int snd_ak4113_create(struct snd_card *card, ak4113_read_t *read, chip->private_data = private_data; INIT_DELAYED_WORK(&chip->work, ak4113_stats); atomic_set(&chip->wq_processing, 0); + mutex_init(&chip->reinit_mutex); for (reg = 0; reg < AK4113_WRITABLE_REGS ; reg++) chip->regmap[reg] = pgm[reg]; @@ -141,7 +142,9 @@ void snd_ak4113_reinit(struct ak4113 *chip) { if (atomic_inc_return(&chip->wq_processing) == 1) cancel_delayed_work_sync(&chip->work); + mutex_lock(&chip->reinit_mutex); ak4113_init_regs(chip); + mutex_unlock(&chip->reinit_mutex); /* bring up statistics / event queing */ if (atomic_dec_and_test(&chip->wq_processing)) schedule_delayed_work(&chip->work, HZ / 10); @@ -636,3 +639,19 @@ 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 |