This patch is adding support of headset autodetection on PAZ00 board.
Signed-off-by: Leon Romanovsky <leon(a)leon.nu>
---
arch/arm/boot/dts/tegra-paz00.dts | 1 +
sound/soc/tegra/tegra_alc5632.c | 39 +++++++++++++++++++++++++++++++++---
2 files changed, 36 insertions(+), 4 deletions(-)
diff --git a/arch/arm/boot/dts/tegra-paz00.dts b/arch/arm/boot/dts/tegra-paz00.dts
index e6809b7..fa9dd9e 100644
--- a/arch/arm/boot/dts/tegra-paz00.dts
+++ b/arch/arm/boot/dts/tegra-paz00.dts
@@ -64,6 +64,7 @@
nvidia,audio-codec = <&alc5632>;
nvidia,i2s-controller = <&tegra_i2s1>;
+ nvidia,hp-det-gpios = <&gpio 178 0>; /* gpio PW2 */
};
serial@70006000 {
diff --git a/sound/soc/tegra/tegra_alc5632.c b/sound/soc/tegra/tegra_alc5632.c
index c0ba1e4..1794139 100644
--- a/sound/soc/tegra/tegra_alc5632.c
+++ b/sound/soc/tegra/tegra_alc5632.c
@@ -18,6 +18,7 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio.h>
+#include <linux/of_gpio.h>
#include <sound/core.h>
#include <sound/jack.h>
@@ -34,9 +35,13 @@
#define DRV_NAME "tegra-alc5632"
+#define GPIO_HP_DET BIT(0)
+
struct tegra_alc5632 {
struct tegra_asoc_utils_data util_data;
struct platform_device *pcm_dev;
+ int gpio_requested;
+ int gpio_hp_det;
};
static int tegra_alc5632_asoc_hw_params(struct snd_pcm_substream *substream,
@@ -86,6 +91,13 @@ static struct snd_soc_jack_pin tegra_alc5632_hs_jack_pins[] = {
},
};
+static struct snd_soc_jack_gpio tegra_alc5632_hp_jack_gpio = {
+ .name = "Headset detection",
+ .report = SND_JACK_HEADSET,
+ .debounce_time = 150,
+ .invert = 1,
+};
+
static const struct snd_soc_dapm_widget tegra_alc5632_dapm_widgets[] = {
SND_SOC_DAPM_SPK("Int Spk", NULL),
SND_SOC_DAPM_HP("Headset Stereophone", NULL),
@@ -114,6 +126,9 @@ static int tegra_alc5632_asoc_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
+ struct device_node *np = codec->card->dev->of_node;
+ struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(codec->card);
+ int ret;
snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
&tegra_alc5632_hs_jack);
@@ -121,6 +136,16 @@ static int tegra_alc5632_asoc_init(struct snd_soc_pcm_runtime *rtd)
ARRAY_SIZE(tegra_alc5632_hs_jack_pins),
tegra_alc5632_hs_jack_pins);
+ machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
+
+ if (gpio_is_valid(machine->gpio_hp_det)) {
+ tegra_alc5632_hp_jack_gpio.gpio = machine->gpio_hp_det;
+ snd_soc_jack_add_gpios(&tegra_alc5632_hs_jack,
+ 1,
+ &tegra_alc5632_hp_jack_gpio);
+ machine->gpio_requested |= GPIO_HP_DET;
+ }
+
snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
return 0;
@@ -239,13 +264,19 @@ err:
static int __devexit tegra_alc5632_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
- struct tegra_alc5632 *alc5632 = snd_soc_card_get_drvdata(card);
+ struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(card);
+
+ if (machine->gpio_requested & GPIO_HP_DET)
+ snd_soc_jack_free_gpios(&tegra_alc5632_hs_jack,
+ 1,
+ &tegra_alc5632_hp_jack_gpio);
+ machine->gpio_requested = 0;
snd_soc_unregister_card(card);
- tegra_asoc_utils_fini(&alc5632->util_data);
- if (!IS_ERR(alc5632->pcm_dev))
- platform_device_unregister(alc5632->pcm_dev);
+ tegra_asoc_utils_fini(&machine->util_data);
+ if (!IS_ERR(machine->pcm_dev))
+ platform_device_unregister(machine->pcm_dev);
return 0;
}
--
1.7.3.4
