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Commit 4fc932c6 authored by Mark Brown's avatar Mark Brown
Browse files

ASoC: pcm3008: Manage DAC and ADC power with DAPM



Rather than leaving the DAC and ADC active whenever the system is running
manage their power with DAPM.

Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent faaf36f2
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+39 −33
Original line number Original line Diff line number Diff line
@@ -28,20 +28,53 @@


#include "pcm3008.h"
#include "pcm3008.h"


static int pcm3008_dac_ev(struct snd_soc_dapm_widget *w,
			  struct snd_kcontrol *kcontrol,
			  int event)
{
	struct snd_soc_codec *codec = w->codec;
	struct pcm3008_setup_data *setup = codec->dev->platform_data;

	gpio_set_value_cansleep(setup->pdda_pin,
				SND_SOC_DAPM_EVENT_ON(event));

	return 0;
}

static int pcm3008_adc_ev(struct snd_soc_dapm_widget *w,
			  struct snd_kcontrol *kcontrol,
			  int event)
{
	struct snd_soc_codec *codec = w->codec;
	struct pcm3008_setup_data *setup = codec->dev->platform_data;

	gpio_set_value_cansleep(setup->pdad_pin,
				SND_SOC_DAPM_EVENT_ON(event));

	return 0;
}

static const struct snd_soc_dapm_widget pcm3008_dapm_widgets[] = {
static const struct snd_soc_dapm_widget pcm3008_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("VINL"),
SND_SOC_DAPM_INPUT("VINL"),
SND_SOC_DAPM_INPUT("VINR"),
SND_SOC_DAPM_INPUT("VINR"),


SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, pcm3008_dac_ev,
		   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_ADC_E("ADC", NULL, SND_SOC_NOPM, 0, 0, pcm3008_adc_ev,
		   SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),

SND_SOC_DAPM_OUTPUT("VOUTL"),
SND_SOC_DAPM_OUTPUT("VOUTL"),
SND_SOC_DAPM_OUTPUT("VOUTR"),
SND_SOC_DAPM_OUTPUT("VOUTR"),
};
};


static const struct snd_soc_dapm_route pcm3008_dapm_routes[] = {
static const struct snd_soc_dapm_route pcm3008_dapm_routes[] = {
	{ "PCM3008 Capture", NULL, "VINL" },
	{ "PCM3008 Capture", NULL, "ADC" },
	{ "PCM3008 Capture", NULL, "VINR" },
	{ "ADC", NULL, "VINL" },
	{ "ADC", NULL, "VINR" },


	{ "VOUTL", NULL, "PCM3008 Playback" },
	{ "DAC", NULL, "PCM3008 Playback" },
	{ "VOUTR", NULL, "PCM3008 Playback" },
	{ "VOUTL", NULL, "DAC" },
	{ "VOUTR", NULL, "DAC" },
};
};


#define PCM3008_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |	\
#define PCM3008_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |	\
@@ -65,34 +98,7 @@ static struct snd_soc_dai_driver pcm3008_dai = {
	},
	},
};
};


#ifdef CONFIG_PM
static int pcm3008_soc_suspend(struct snd_soc_codec *codec)
{
	struct pcm3008_setup_data *setup = codec->dev->platform_data;

	gpio_set_value_cansleep(setup->pdad_pin, 0);
	gpio_set_value_cansleep(setup->pdda_pin, 0);

	return 0;
}

static int pcm3008_soc_resume(struct snd_soc_codec *codec)
{
	struct pcm3008_setup_data *setup = codec->dev->platform_data;

	gpio_set_value_cansleep(setup->pdad_pin, 1);
	gpio_set_value_cansleep(setup->pdda_pin, 1);

	return 0;
}
#else
#define pcm3008_soc_suspend NULL
#define pcm3008_soc_resume NULL
#endif

static struct snd_soc_codec_driver soc_codec_dev_pcm3008 = {
static struct snd_soc_codec_driver soc_codec_dev_pcm3008 = {
	.suspend =	pcm3008_soc_suspend,
	.resume =	pcm3008_soc_resume,
	.dapm_widgets = pcm3008_dapm_widgets,
	.dapm_widgets = pcm3008_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(pcm3008_dapm_widgets),
	.num_dapm_widgets = ARRAY_SIZE(pcm3008_dapm_widgets),
	.dapm_routes = pcm3008_dapm_routes,
	.dapm_routes = pcm3008_dapm_routes,
@@ -128,13 +134,13 @@ static int pcm3008_codec_probe(struct platform_device *pdev)


	/* Configure PDAD GPIO. */
	/* Configure PDAD GPIO. */
	ret = devm_gpio_request_one(&pdev->dev, setup->pdad_pin,
	ret = devm_gpio_request_one(&pdev->dev, setup->pdad_pin,
				    GPIOF_OUT_INIT_HIGH, "codec_pdad");
				    GPIOF_OUT_INIT_LOW, "codec_pdad");
	if (ret != 0)
	if (ret != 0)
		return ret;
		return ret;


	/* Configure PDDA GPIO. */
	/* Configure PDDA GPIO. */
	ret = devm_gpio_request_one(&pdev->dev, setup->pdda_pin,
	ret = devm_gpio_request_one(&pdev->dev, setup->pdda_pin,
				    GPIOF_OUT_INIT_HIGH, "codec_pdda");
				    GPIOF_OUT_INIT_LOW, "codec_pdda");
	if (ret != 0)
	if (ret != 0)
		return ret;
		return ret;