diff options
Diffstat (limited to 'sound/soc/soc-jack.c')
| -rw-r--r-- | sound/soc/soc-jack.c | 43 |
1 files changed, 40 insertions, 3 deletions
diff --git a/sound/soc/soc-jack.c b/sound/soc/soc-jack.c index 3c07a94c2e30..29159e1781d0 100644 --- a/sound/soc/soc-jack.c +++ b/sound/soc/soc-jack.c @@ -37,6 +37,7 @@ int snd_soc_jack_new(struct snd_soc_card *card, const char *id, int type, { jack->card = card; INIT_LIST_HEAD(&jack->pins); + BLOCKING_INIT_NOTIFIER_HEAD(&jack->notifier); return snd_jack_new(card->codec->card, id, type, &jack->jack); } @@ -63,10 +64,9 @@ void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask) int enable; int oldstatus; - if (!jack) { - WARN_ON_ONCE(!jack); + if (!jack) return; - } + codec = jack->card->codec; mutex_lock(&codec->mutex); @@ -93,6 +93,9 @@ void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask) snd_soc_dapm_disable_pin(codec, pin->pin); } + /* Report before the DAPM sync to help users updating micbias status */ + blocking_notifier_call_chain(&jack->notifier, status, NULL); + snd_soc_dapm_sync(codec); snd_jack_report(jack->jack, status); @@ -143,6 +146,40 @@ int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count, } EXPORT_SYMBOL_GPL(snd_soc_jack_add_pins); +/** + * snd_soc_jack_notifier_register - Register a notifier for jack status + * + * @jack: ASoC jack + * @nb: Notifier block to register + * + * Register for notification of the current status of the jack. Note + * that it is not possible to report additional jack events in the + * callback from the notifier, this is intended to support + * applications such as enabling electrical detection only when a + * mechanical detection event has occurred. + */ +void snd_soc_jack_notifier_register(struct snd_soc_jack *jack, + struct notifier_block *nb) +{ + blocking_notifier_chain_register(&jack->notifier, nb); +} +EXPORT_SYMBOL_GPL(snd_soc_jack_notifier_register); + +/** + * snd_soc_jack_notifier_unregister - Unregister a notifier for jack status + * + * @jack: ASoC jack + * @nb: Notifier block to unregister + * + * Stop notifying for status changes. + */ +void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack, + struct notifier_block *nb) +{ + blocking_notifier_chain_unregister(&jack->notifier, nb); +} +EXPORT_SYMBOL_GPL(snd_soc_jack_notifier_unregister); + #ifdef CONFIG_GPIOLIB /* gpio detect */ static void snd_soc_jack_gpio_detect(struct snd_soc_jack_gpio *gpio) |