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authorDylan Reid <dgreid@chromium.org>2014-10-02 09:42:44 -0700
committerMark Brown <broonie@kernel.org>2014-10-03 11:22:02 +0100
commit9766a1cfe5ef2042d1e604e2223629dc43307a21 (patch)
tree5441936629e0f4b72e4e21b5daf33b9fb01ca0a5
parent7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9 (diff)
downloadop-kernel-dev-9766a1cfe5ef2042d1e604e2223629dc43307a21.zip
op-kernel-dev-9766a1cfe5ef2042d1e604e2223629dc43307a21.tar.gz
ASoC: tegra: add mic detect gpio to tegra_max98090
Add an optional mic detect gpio property. If specified in device tree there will be a mic jack created for the given gpio. This will be used by the Tegra-based Chromebooks. Signed-off-by: Dylan Reid <dgreid@chromium.org> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--Documentation/devicetree/bindings/sound/nvidia,tegra-audio-max98090.txt1
-rw-r--r--sound/soc/tegra/tegra_max98090.c40
2 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-max98090.txt b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-max98090.txt
index 9c7c55c..c949abc 100644
--- a/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-max98090.txt
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-max98090.txt
@@ -25,6 +25,7 @@ Required properties:
Optional properties:
- nvidia,hp-det-gpios : The GPIO that detect headphones are plugged in
+- nvidia,mic-det-gpios : The GPIO that detect microphones are plugged in
Example:
diff --git a/sound/soc/tegra/tegra_max98090.c b/sound/soc/tegra/tegra_max98090.c
index b86cd99..01921d7 100644
--- a/sound/soc/tegra/tegra_max98090.c
+++ b/sound/soc/tegra/tegra_max98090.c
@@ -42,6 +42,7 @@
struct tegra_max98090 {
struct tegra_asoc_utils_data util_data;
int gpio_hp_det;
+ int gpio_mic_det;
};
static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
@@ -112,6 +113,22 @@ static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = {
.invert = 1,
};
+static struct snd_soc_jack tegra_max98090_mic_jack;
+
+static struct snd_soc_jack_pin tegra_max98090_mic_jack_pins[] = {
+ {
+ .pin = "Mic Jack",
+ .mask = SND_JACK_MICROPHONE,
+ },
+};
+
+static struct snd_soc_jack_gpio tegra_max98090_mic_jack_gpio = {
+ .name = "Mic detection",
+ .report = SND_JACK_MICROPHONE,
+ .debounce_time = 150,
+ .invert = 1,
+};
+
static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphones", NULL),
SND_SOC_DAPM_SPK("Speakers", NULL),
@@ -141,6 +158,19 @@ static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
&tegra_max98090_hp_jack_gpio);
}
+ if (gpio_is_valid(machine->gpio_mic_det)) {
+ snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
+ &tegra_max98090_mic_jack);
+ snd_soc_jack_add_pins(&tegra_max98090_mic_jack,
+ ARRAY_SIZE(tegra_max98090_mic_jack_pins),
+ tegra_max98090_mic_jack_pins);
+
+ tegra_max98090_mic_jack_gpio.gpio = machine->gpio_mic_det;
+ snd_soc_jack_add_gpios(&tegra_max98090_mic_jack,
+ 1,
+ &tegra_max98090_mic_jack_gpio);
+ }
+
return 0;
}
@@ -153,6 +183,11 @@ static int tegra_max98090_card_remove(struct snd_soc_card *card)
&tegra_max98090_hp_jack_gpio);
}
+ if (gpio_is_valid(machine->gpio_mic_det)) {
+ snd_soc_jack_free_gpios(&tegra_max98090_mic_jack, 1,
+ &tegra_max98090_mic_jack_gpio);
+ }
+
return 0;
}
@@ -201,6 +236,11 @@ static int tegra_max98090_probe(struct platform_device *pdev)
if (machine->gpio_hp_det == -EPROBE_DEFER)
return -EPROBE_DEFER;
+ machine->gpio_mic_det =
+ of_get_named_gpio(np, "nvidia,mic-det-gpios", 0);
+ if (machine->gpio_mic_det == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
ret = snd_soc_of_parse_card_name(card, "nvidia,model");
if (ret)
goto err;
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