ASoC: tas2770: Add shutdown capability via a GPIO (5d0b9dfe) · Commits · 戴 / test

sound/soc/codecs/tas2770.c

+39 −14

Original line number	Diff line number	Diff line
		@@ -79,28 +79,42 @@ static int tas2770_set_bias_level(struct snd_soc_component *component,
		#ifdef CONFIG_PM
		static int tas2770_codec_suspend(struct snd_soc_component *component)
		{
		int ret;
		struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component);
		int ret = 0;

		if (tas2770->sdz_gpio) {
		gpiod_set_value_cansleep(tas2770->sdz_gpio, 0);
		} else {
		ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
		TAS2770_PWR_CTRL_MASK,
		TAS2770_PWR_CTRL_SHUTDOWN);
		if (ret < 0)
		return ret;

		return 0;
		ret = 0;
		}

		return ret;
		}

		static int tas2770_codec_resume(struct snd_soc_component *component)
		{
		int ret;
		struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component);
		int ret = 0;

		if (tas2770->sdz_gpio) {
		gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);
		} else {
		ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
		TAS2770_PWR_CTRL_MASK,
		TAS2770_PWR_CTRL_ACTIVE);
		if (ret < 0)
		return ret;

		return 0;
		ret = 0;
		}

		return ret;
		}
		#else
		#define tas2770_codec_suspend NULL
		@@ -498,6 +512,9 @@ static int tas2770_codec_probe(struct snd_soc_component *component)

		tas2770->component = component;

		if (tas2770->sdz_gpio)
		gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);

		tas2770_reset(tas2770);

		return 0;
		@@ -650,6 +667,14 @@ static int tas2770_parse_dt(struct device dev, struct tas2770_priv tas2770)
		tas2770->v_sense_slot = 2;
		}

		tas2770->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
		if (IS_ERR(tas2770->sdz_gpio)) {
		if (PTR_ERR(tas2770->sdz_gpio) == -EPROBE_DEFER)
		return -EPROBE_DEFER;

		tas2770->sdz_gpio = NULL;
		}

		return 0;
		}

sound/soc/codecs/tas2770.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -134,6 +134,7 @@ struct tas2770_priv {
		int power_state;
		int asi_format;
		struct gpio_desc *reset_gpio;
		struct gpio_desc *sdz_gpio;
		int sampling_rate;
		int channel_size;
		int slot_width;

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