ASoC: Add headset jack detection for SDP3430 machine driver

Add headset jack detection for SDP3430 boards using SoC jack
reporting interface. Headset detection on SDP3430 board is
achieved through TWL4030 GPIO_2 pin.

Signed-off-by: Misael Lopez Cruz <x0052729@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 41 insertions, 2 deletions

diff --git a/sound/soc/omap/sdp3430.c b/sound/soc/omap/sdp3430.c
index 4eab4b491dee..715c648203a4 100644
--- a/sound/soc/omap/sdp3430.c
+++ b/sound/soc/omap/sdp3430.c
@@ -28,6 +28,7 @@
 #include <sound/pcm.h>
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>
+#include <sound/jack.h>
 
 #include <asm/mach-types.h>
 #include <mach/hardware.h>
@@ -122,7 +123,7 @@ static int sdp3430_twl4030_init(struct snd_soc_codec *codec)
         /* SDP3430 connected pins */
         snd_soc_dapm_enable_pin(codec, "Ext Mic");
         snd_soc_dapm_enable_pin(codec, "Ext Spk");
-        snd_soc_dapm_enable_pin(codec, "Headset Jack");
+        snd_soc_dapm_disable_pin(codec, "Headset Jack");
 
         /* TWL4030 not connected pins */
         snd_soc_dapm_nc_pin(codec, "AUXL");
@@ -144,6 +145,27 @@ static int sdp3430_twl4030_init(struct snd_soc_codec *codec)
         return ret;
 }
 
+/* Headset jack */
+static struct snd_soc_jack hs_jack;
+
+/* Headset jack detection DAPM pins */
+static struct snd_soc_jack_pin hs_jack_pins[] = {
+        {
+                .pin = "Headset Jack",
+                .mask = SND_JACK_HEADSET,
+        },
+};
+
+/* Headset jack detection gpios */
+static struct snd_soc_jack_gpio hs_jack_gpios[] = {
+        {
+                .gpio = (OMAP_MAX_GPIO_LINES + 2),
+                .name = "hsdet-gpio",
+                .report = SND_JACK_HEADSET,
+                .debounce_time = 200,
+        },
+};
+
 /* Digital audio interface glue - connects codec <--> CPU */
 static struct snd_soc_dai_link sdp3430_dai = {
         .name = "TWL4030",
@@ -194,7 +216,21 @@ static int __init sdp3430_soc_init(void)
         if (ret)
                 goto err1;
 
-        return 0;
+        /* Headset jack detection */
+        ret = snd_soc_jack_new(&snd_soc_sdp3430, "SDP3430 headset jack",
+                                SND_JACK_HEADSET, &hs_jack);
+        if (ret)
+                return ret;
+
+        ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
+                                hs_jack_pins);
+        if (ret)
+                return ret;
+
+        ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
+                                hs_jack_gpios);
+
+        return ret;
 
 err1:
         printk(KERN_ERR "Unable to add platform device\n");
@@ -206,6 +242,9 @@ module_init(sdp3430_soc_init);
 
 static void __exit sdp3430_soc_exit(void)
 {
+        snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
+                                hs_jack_gpios);
+
         platform_device_unregister(sdp3430_snd_device);
 }
 module_exit(sdp3430_soc_exit);