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authorMark Brown <broonie@opensource.wolfsonmicro.com>2010-03-22 12:06:30 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-03-22 17:20:57 +0000
commitd5021ec9fc32edc6f512c2375923d757e9825f6a (patch)
treee3e216f8f39d724dfb6e41cc2d1158cdc5aa3319 /include/sound
parentc96907f21f26a1f8c1a1a9096a22500e4d158c4f (diff)
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ASoC: Add a notifier for jack status changes
Some systems provide both mechanical and electrical detection of jack status changes. On such systems power savings can be achieved by only enabling the electrical detection methods when physical insertion has been detected. Begin supporting such systems by providing a notifier for jack status changes which can be used to trigger any reconfiguration. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/soc.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h
index b8bac6ae624..80dfac16272 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -15,6 +15,7 @@
#include <linux/platform_device.h>
#include <linux/types.h>
+#include <linux/notifier.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
@@ -261,6 +262,10 @@ int snd_soc_jack_new(struct snd_soc_card *card, const char *id, int type,
void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
struct snd_soc_jack_pin *pins);
+void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
+ struct notifier_block *nb);
+void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
+ struct notifier_block *nb);
#ifdef CONFIG_GPIOLIB
int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
struct snd_soc_jack_gpio *gpios);
@@ -364,6 +369,7 @@ struct snd_soc_jack {
struct snd_soc_card *card;
struct list_head pins;
int status;
+ struct blocking_notifier_head notifier;
};
/* SoC PCM stream information */