ALSA: Add support for mechanical jack insertion

Some systems support both mechanical and electrical jack detection,
allowing them to report that a jack is physically present but does
not have any functioning connections. Add a new jack type for these,
allowing user space to report faulty connections.

Thanks to Guillem Jover for the suggestion.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/sound/core/jack.c b/sound/core/jack.c
index c4bb9bad3133..6ebd5f12bc50 100644
--- a/sound/core/jack.c
+++ b/sound/core/jack.c
@@ -108,6 +108,9 @@ int snd_jack_new(struct snd_card *card, const char *id, int type,
         if (type & SND_JACK_MICROPHONE)
                 input_set_capability(jack->input_dev, EV_SW,
                                      SW_MICROPHONE_INSERT);
+        if (type & SND_JACK_MECHANICAL)
+                input_set_capability(jack->input_dev, EV_SW,
+                                     SW_JACK_PHYSICAL_INSERT);
 
         err = snd_device_new(card, SNDRV_DEV_JACK, jack, &ops);
         if (err < 0)
@@ -159,6 +162,9 @@ void snd_jack_report(struct snd_jack *jack, int status)
         if (jack->type & SND_JACK_MICROPHONE)
                 input_report_switch(jack->input_dev, SW_MICROPHONE_INSERT,
                                     status & SND_JACK_MICROPHONE);
+        if (jack->type & SND_JACK_MECHANICAL)
+                input_report_switch(jack->input_dev, SW_JACK_PHYSICAL_INSERT,
+                                    status & SND_JACK_MECHANICAL);
 
         input_sync(jack->input_dev);
 }