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authorMark Brown <broonie@opensource.wolfsonmicro.com>2009-01-07 17:31:10 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-01-09 10:31:31 +0000
commit8a2cd6180f8fa00111843c2f4a4f4361995358e0 (patch)
tree4f2bf5e1843b4bba34a7d42b8bba1af283f6e747 /include/sound
parent1649923dd52ce914be98bff0ae352344ef04f305 (diff)
ASoC: Add jack reporting interface
This patch adds a jack reporting interface to ASoC. This wraps the ALSA core jack detection functionality and provides integration with DAPM to automatically update the power state of pins based on the jack state. Since embedded platforms can have multiple detecton methods used for a single jack (eg, separate microphone and headphone detection) the report function allows specification of which bits are being updated on a given report. The expected usage is that machine drivers will create jack objects and then configure jack detection methods to update that jack. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/soc.h32
1 files changed, 32 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 9b930d34211..9c3ef6a3e9f 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -154,6 +154,8 @@ enum snd_soc_bias_level {
SND_SOC_BIAS_OFF,
};
+struct snd_jack;
+struct snd_soc_card;
struct snd_soc_device;
struct snd_soc_pcm_stream;
struct snd_soc_ops;
@@ -164,6 +166,8 @@ struct snd_soc_platform;
struct snd_soc_codec;
struct soc_enum;
struct snd_soc_ac97_ops;
+struct snd_soc_jack;
+struct snd_soc_jack_pin;
typedef int (*hw_write_t)(void *,const char* ,int);
typedef int (*hw_read_t)(void *,char* ,int);
@@ -184,6 +188,13 @@ int snd_soc_init_card(struct snd_soc_device *socdev);
int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
const struct snd_pcm_hardware *hw);
+/* Jack reporting */
+int snd_soc_jack_new(struct snd_soc_card *card, const char *id, int type,
+ struct snd_soc_jack *jack);
+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);
+
/* codec IO */
#define snd_soc_read(codec, reg) codec->read(codec, reg)
#define snd_soc_write(codec, reg, value) codec->write(codec, reg, value)
@@ -239,6 +250,27 @@ int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
+/**
+ * struct snd_soc_jack_pin - Describes a pin to update based on jack detection
+ *
+ * @pin: name of the pin to update
+ * @mask: bits to check for in reported jack status
+ * @invert: if non-zero then pin is enabled when status is not reported
+ */
+struct snd_soc_jack_pin {
+ struct list_head list;
+ const char *pin;
+ int mask;
+ bool invert;
+};
+
+struct snd_soc_jack {
+ struct snd_jack *jack;
+ struct snd_soc_card *card;
+ struct list_head pins;
+ int status;
+};
+
/* SoC PCM stream information */
struct snd_soc_pcm_stream {
char *stream_name;