diff options
Diffstat (limited to 'sound/i2c/other/ak4114.c')
| -rw-r--r-- | sound/i2c/other/ak4114.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/sound/i2c/other/ak4114.c b/sound/i2c/other/ak4114.c index b70e6eccbd03..5a4cf3fab4ae 100644 --- a/sound/i2c/other/ak4114.c +++ b/sound/i2c/other/ak4114.c @@ -100,6 +100,7 @@ int snd_ak4114_create(struct snd_card *card, chip->private_data = private_data; INIT_DELAYED_WORK(&chip->work, ak4114_stats); atomic_set(&chip->wq_processing, 0); + mutex_init(&chip->reinit_mutex); for (reg = 0; reg < 6; reg++) chip->regmap[reg] = pgm[reg]; @@ -122,6 +123,7 @@ int snd_ak4114_create(struct snd_card *card, snd_ak4114_free(chip); return err < 0 ? err : -EIO; } +EXPORT_SYMBOL(snd_ak4114_create); void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char mask, unsigned char val) { @@ -131,6 +133,7 @@ void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char reg_write(chip, reg, (chip->txcsb[reg-AK4114_REG_TXCSB0] & ~mask) | val); } +EXPORT_SYMBOL(snd_ak4114_reg_write); static void ak4114_init_regs(struct ak4114 *chip) { @@ -154,11 +157,14 @@ void snd_ak4114_reinit(struct ak4114 *chip) { if (atomic_inc_return(&chip->wq_processing) == 1) cancel_delayed_work_sync(&chip->work); + mutex_lock(&chip->reinit_mutex); ak4114_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); } +EXPORT_SYMBOL(snd_ak4114_reinit); static unsigned int external_rate(unsigned char rcs1) { @@ -503,6 +509,7 @@ int snd_ak4114_build(struct ak4114 *ak4114, schedule_delayed_work(&ak4114->work, HZ / 10); return 0; } +EXPORT_SYMBOL(snd_ak4114_build); /* notify kcontrols if any parameters are changed */ static void ak4114_notify(struct ak4114 *ak4114, @@ -558,6 +565,7 @@ int snd_ak4114_external_rate(struct ak4114 *ak4114) rcs1 = reg_read(ak4114, AK4114_REG_RCS1); return external_rate(rcs1); } +EXPORT_SYMBOL(snd_ak4114_external_rate); int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags) { @@ -605,6 +613,7 @@ int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags) } return res; } +EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors); static void ak4114_stats(struct work_struct *work) { @@ -616,9 +625,18 @@ static void ak4114_stats(struct work_struct *work) schedule_delayed_work(&chip->work, HZ / 10); } -EXPORT_SYMBOL(snd_ak4114_create); -EXPORT_SYMBOL(snd_ak4114_reg_write); -EXPORT_SYMBOL(snd_ak4114_reinit); -EXPORT_SYMBOL(snd_ak4114_build); -EXPORT_SYMBOL(snd_ak4114_external_rate); -EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors); +#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 |