[alsa-devel] [PATCH 4/5] ASoC: dt: tegra: Enable headset autodetection on PAZ00 board.

[Leon Romanovsky]

On Tue, Jan 31, 2012 at 09:31, Leon Romanovsky <leon at leon.nu> wrote:
> This patch is adding support of headset autodetection on PAZ00 board.
>
> Signed-off-by: Leon Romanovsky <leon at 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 at 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
>


Please don't apply this patch, I'm going to resend it after I split it
into 2 patches.

-- 
Leon Romanovsky | Independent Linux Consultant
        www.leon.nu | leon at leon.nu