ASoC: qcom: sc7180: Modify machine driver for 2mic (3cfbf07c) · Commits · 戴 / test

sound/soc/qcom/sc7180.c

+61 −0

Original line number	Diff line number	Diff line
		@@ -5,6 +5,8 @@
		// sc7180.c -- ALSA SoC Machine driver for SC7180

		#include <dt-bindings/sound/sc7180-lpass.h>
		#include <linux/gpio.h>
		#include <linux/gpio/consumer.h>
		#include <linux/module.h>
		#include <linux/of_device.h>
		#include <linux/platform_device.h>
		@@ -28,6 +30,8 @@ struct sc7180_snd_data {
		u32 pri_mi2s_clk_count;
		struct snd_soc_jack hs_jack;
		struct snd_soc_jack hdmi_jack;
		struct gpio_desc *dmic_sel;
		int dmic_switch;
		};

		static void sc7180_jack_free(struct snd_jack *jack)
		@@ -169,6 +173,27 @@ static int sc7180_snd_startup(struct snd_pcm_substream *substream)
		return 0;
		}

		static int dmic_get(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_value *ucontrol)
		{
		struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
		struct sc7180_snd_data *data = snd_soc_card_get_drvdata(dapm->card);

		ucontrol->value.integer.value[0] = data->dmic_switch;
		return 0;
		}

		static int dmic_set(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_value *ucontrol)
		{
		struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
		struct sc7180_snd_data *data = snd_soc_card_get_drvdata(dapm->card);

		data->dmic_switch = ucontrol->value.integer.value[0];
		gpiod_set_value(data->dmic_sel, data->dmic_switch);
		return 0;
		}

		static void sc7180_snd_shutdown(struct snd_pcm_substream *substream)
		{
		struct snd_soc_pcm_runtime *rtd = substream->private_data;
		@@ -206,6 +231,30 @@ static const struct snd_soc_dapm_widget sc7180_snd_widgets[] = {
		SND_SOC_DAPM_MIC("Headset Mic", NULL),
		};

		static const char * const dmic_mux_text[] = {
		"Front Mic",
		"Rear Mic",
		};

		static SOC_ENUM_SINGLE_DECL(sc7180_dmic_enum,
		SND_SOC_NOPM, 0, dmic_mux_text);

		static const struct snd_kcontrol_new sc7180_dmic_mux_control =
		SOC_DAPM_ENUM_EXT("DMIC Select Mux", sc7180_dmic_enum,
		dmic_get, dmic_set);

		static const struct snd_soc_dapm_widget sc7180_snd_dual_mic_widgets[] = {
		SND_SOC_DAPM_HP("Headphone Jack", NULL),
		SND_SOC_DAPM_MIC("Headset Mic", NULL),
		SND_SOC_DAPM_MIC("DMIC", NULL),
		SND_SOC_DAPM_MUX("Dmic Mux", SND_SOC_NOPM, 0, 0, &sc7180_dmic_mux_control),
		};

		static const struct snd_soc_dapm_route sc7180_snd_dual_mic_audio_route[] = {
		{"Dmic Mux", "Front Mic", "DMIC"},
		{"Dmic Mux", "Rear Mic", "DMIC"},
		};

		static void sc7180_add_ops(struct snd_soc_card *card)
		{
		struct snd_soc_dai_link *link;
		@@ -238,6 +287,18 @@ static int sc7180_snd_platform_probe(struct platform_device *pdev)
		card->dapm_widgets = sc7180_snd_widgets;
		card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_widgets);

		if (of_property_read_bool(dev->of_node, "dmic-gpios")) {
		card->dapm_widgets = sc7180_snd_dual_mic_widgets,
		card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_dual_mic_widgets),
		card->dapm_routes = sc7180_snd_dual_mic_audio_route,
		card->num_dapm_routes = ARRAY_SIZE(sc7180_snd_dual_mic_audio_route),
		data->dmic_sel = devm_gpiod_get(&pdev->dev, "dmic", GPIOD_OUT_LOW);
		if (IS_ERR(data->dmic_sel)) {
		dev_err(&pdev->dev, "DMIC gpio failed err=%ld\n", PTR_ERR(data->dmic_sel));
		return PTR_ERR(data->dmic_sel);
		}
		}

		ret = qcom_snd_parse_of(card);
		if (ret)
		return ret;

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