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: Mark Brown <broonie@linaro.org>

diff --git a/sound/soc/codecs/pcm3008.c b/sound/soc/codecs/pcm3008.c
index 19f5028..b6618c4 100644 (file)
--- a/sound/soc/codecs/pcm3008.c
+++ b/sound/soc/codecs/pcm3008.c
@@ -28,20 +28,53 @@
 
 #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[] = {
 SND_SOC_DAPM_INPUT("VINL"),
 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("VOUTR"),
 };
 
 static const struct snd_soc_dapm_route pcm3008_dapm_routes[] = {
-       { "PCM3008 Capture", NULL, "VINL" },
-       { "PCM3008 Capture", NULL, "VINR" },
+       { "PCM3008 Capture", NULL, "ADC" },
+       { "ADC", NULL, "VINL" },
+       { "ADC", NULL, "VINR" },
 
-       { "VOUTL", NULL, "PCM3008 Playback" },
-       { "VOUTR", NULL, "PCM3008 Playback" },
+       { "DAC", NULL, "PCM3008 Playback" },
+       { "VOUTL", NULL, "DAC" },
+       { "VOUTR", NULL, "DAC" },
 };
 
 #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 = {
-       .suspend =      pcm3008_soc_suspend,
-       .resume =       pcm3008_soc_resume,
        .dapm_widgets = pcm3008_dapm_widgets,
        .num_dapm_widgets = ARRAY_SIZE(pcm3008_dapm_widgets),
        .dapm_routes = pcm3008_dapm_routes,
@@ -128,13 +134,13 @@ static int pcm3008_codec_probe(struct platform_device *pdev)
 
        /* Configure PDAD GPIO. */
        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)
                return ret;
 
        /* Configure PDDA GPIO. */
        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)
                return ret;