ASoC: Add WM8958 based headset detection on Littlemill

The board supports CODECs that won't work with this but the CODEC driver
will check to see if it's running on the right chip for us.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/sound/soc/samsung/littlemill.c b/sound/soc/samsung/littlemill.c
index d2a44ab3c207..5d7680f4b7c1 100644
--- a/sound/soc/samsung/littlemill.c
+++ b/sound/soc/samsung/littlemill.c
@@ -154,8 +154,11 @@ static struct snd_soc_dapm_route audio_paths[] = {
         { "Headphone", NULL, "HPOUT1R" },
 };
 
+static struct snd_soc_jack littlemill_headset;
+
 static int littlemill_late_probe(struct snd_soc_card *card)
 {
+        struct snd_soc_codec *codec = card->rtd[0].codec;
         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
         int ret;
 
@@ -164,6 +167,18 @@ static int littlemill_late_probe(struct snd_soc_card *card)
         if (ret < 0)
                 return ret;
 
+        ret = snd_soc_jack_new(codec, "Headset",
+                               SND_JACK_HEADSET | SND_JACK_MECHANICAL |
+                               SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+                               SND_JACK_BTN_2 | SND_JACK_BTN_3 |
+                               SND_JACK_BTN_4 | SND_JACK_BTN_5,
+                               &littlemill_headset);
+        if (ret)
+                return ret;
+
+        /* This will check device compatibility itself */
+        wm8958_mic_detect(codec, &littlemill_headset, NULL, NULL);
+
         return 0;
 }