Add a new switch type to the input API for reporting microphone
insertion and extend the ALSA jack reporting API to include this.
Since a headset is a combination of a microphone and at least a mono
headphone a convenience defintion is provided for describing them.
Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
include/linux/input.h | 1 +
include/sound/jack.h | 4 +++-
sound/core/jack.c | 6 ++++++
3 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/include/linux/input.h b/include/linux/input.h
index d150c57..d297dec 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -640,6 +640,7 @@ struct input_absinfo {
#define SW_RFKILL_ALL 0x03 /* rfkill master switch, type "any"
set = radio enabled */
#define SW_RADIO SW_RFKILL_ALL /* deprecated */
+#define SW_MICROPHONE_INSERT 0x04 /* set = inserted */
#define SW_MAX 0x0f
#define SW_CNT (SW_MAX+1)
diff --git a/include/sound/jack.h b/include/sound/jack.h
index 5cb610d..743f559 100644
--- a/include/sound/jack.h
+++ b/include/sound/jack.h
@@ -32,7 +32,9 @@ struct input_dev;
* bitmask.
*/
enum snd_jack_types {
- SND_JACK_HEADPHONE = 0x0001,
+ SND_JACK_HEADPHONE = 0x0001,
+ SND_JACK_MICROPHONE = 0x0002,
+ SND_JACK_HEADSET = 0x0003, /* Both microphone and headphone */
};
struct snd_jack {
diff --git a/sound/core/jack.c b/sound/core/jack.c
index 36ecc57..9c05ec8 100644
--- a/sound/core/jack.c
+++ b/sound/core/jack.c
@@ -102,6 +102,9 @@ int snd_jack_new(struct snd_card *card, const char *id, int type,
if (type & SND_JACK_HEADPHONE)
input_set_capability(jack->input_dev, EV_SW,
SW_HEADPHONE_INSERT);
+ if (type & SND_JACK_MICROPHONE)
+ input_set_capability(jack->input_dev, EV_SW,
+ SW_MICROPHONE_INSERT);
err = snd_device_new(card, SNDRV_DEV_JACK, jack, &ops);
if (err < 0)
@@ -147,6 +150,9 @@ void snd_jack_report(struct snd_jack *jack, int status)
if (jack->type & SND_JACK_HEADPHONE)
input_report_switch(jack->input_dev, SW_HEADPHONE_INSERT,
status & SND_JACK_HEADPHONE);
+ if (jack->type & SND_JACK_MICROPHONE)
+ input_report_switch(jack->input_dev, SW_MICROPHONE_INSERT,
+ status & SND_JACK_MICROPHONE);
input_sync(jack->input_dev);
}
--
1.5.6
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