ASoC: qcom: apq8016-sbc: Add support to Headset JACK

This patch adds support to Headset JACK, also provides board specific
vref ranges for mbhc buttons to be detected.

This headset supports both 3 pole and 4 pole headset type and 5 buttons.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/qcom/apq8016_sbc.c b/sound/soc/qcom/apq8016_sbc.c
index 96a079d..d49adc8 100644 (file)
--- a/sound/soc/qcom/apq8016_sbc.c
+++ b/sound/soc/qcom/apq8016_sbc.c
@@ -21,12 +21,16 @@
 #include <linux/platform_device.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
+#include <sound/jack.h>
 #include <sound/soc.h>
+#include <uapi/linux/input-event-codes.h>
 #include <dt-bindings/sound/apq8016-lpass.h>
 
 struct apq8016_sbc_data {
        void __iomem *mic_iomux;
        void __iomem *spkr_iomux;
+       struct snd_soc_jack jack;
+       bool jack_setup;
        struct snd_soc_dai_link dai_link[];     /* dynamically allocated */
 };
 
@@ -70,6 +74,31 @@ static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
 
        }
 
+       if (!pdata->jack_setup) {
+               struct snd_jack *jack;
+
+               rval = snd_soc_card_jack_new(card, "Headset Jack",
+                                            SND_JACK_HEADSET |
+                                            SND_JACK_HEADPHONE |
+                                            SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+                                            SND_JACK_BTN_2 | SND_JACK_BTN_3 |
+                                            SND_JACK_BTN_4,
+                                            &pdata->jack, NULL, 0);
+
+               if (rval < 0) {
+                       dev_err(card->dev, "Unable to add Headphone Jack\n");
+                       return rval;
+               }
+
+               jack = pdata->jack.jack;
+
+               snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_MEDIA);
+               snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
+               snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
+               snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
+               pdata->jack_setup = true;
+       }
+
        for (i = 0 ; i < dai_link->num_codecs; i++) {
                struct snd_soc_dai *dai = rtd->codec_dais[i];
 
@@ -81,6 +110,11 @@ static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
                        dev_warn(card->dev, "Failed to set mclk: %d\n", rval);
                        return rval;
                }
+               rval = snd_soc_codec_set_jack(codec, &pdata->jack, NULL);
+               if (rval != 0 && rval != -ENOTSUPP) {
+                       dev_warn(card->dev, "Failed to set jack: %d\n", rval);
+                       return rval;
+               }
        }
 
        return 0;