ALSA: hda: add support for jack detection on IDT/Sigmatel

Added support for jack detection reporting to userspace for
IDT/Sigmatel codecs.

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 13 insertions, 1 deletions

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index a2ac7205d45d..ec88ba881482 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -30,6 +30,7 @@
 #include <linux/pci.h>
 #include <sound/core.h>
 #include <sound/asoundef.h>
+#include <sound/jack.h>
 #include "hda_codec.h"
 #include "hda_local.h"
 #include "hda_patch.h"
@@ -216,6 +217,9 @@ struct sigmatel_spec {
 
         struct hda_pcm pcm_rec[2];      /* PCM information */
 
+        /* jack detection */
+        struct snd_jack *jack;
+
         /* dynamic controls and input_mux */
         struct auto_pin_cfg autocfg;
         unsigned int num_kctl_alloc, num_kctl_used;
@@ -3617,7 +3621,7 @@ static int stac92xx_init(struct hda_codec *codec)
 {
         struct sigmatel_spec *spec = codec->spec;
         struct auto_pin_cfg *cfg = &spec->autocfg;
-        int i;
+        int i, err;
 
         snd_hda_sequence_write(codec, spec->init);
 
@@ -3639,6 +3643,12 @@ static int stac92xx_init(struct hda_codec *codec)
                 stac92xx_auto_set_pinctl(codec, spec->autocfg.line_out_pins[0],
                                          AC_PINCTL_OUT_EN);
                 stac92xx_auto_init_hp_out(codec);
+                /* jack detection */
+                err = snd_jack_new(codec->bus->card,
+                        "Headphone Jack",
+                        SND_JACK_HEADPHONE, &spec->jack);
+                if (err < 0)
+                        return err;
                 /* fake event to set up pins */
                 codec->patch_ops.unsol_event(codec, STAC_HP_EVENT << 26);
         } else {
@@ -3796,6 +3806,8 @@ static void stac92xx_hp_detect(struct hda_codec *codec, unsigned int res)
                         break;
                 presence = get_hp_pin_presence(codec, cfg->hp_pins[i]);
         }
+        snd_jack_report(spec->jack,
+                presence ? SND_JACK_HEADPHONE : 0);
 
         if (presence) {
                 /* disable lineouts, enable hp */