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ASoC: Dynamically manage DBVDD2 and DBVDD3 on WM5100
Allow the DBVDD2 and DBVDD3 rails to be powered down when idle, helping fully power down connected devices when idle. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
parent
ab6cf13943
commit
7aefb086c1
1 changed files with 81 additions and 1 deletions
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@ -54,6 +54,8 @@ struct wm5100_priv {
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struct regulator_bulk_data core_supplies[WM5100_NUM_CORE_SUPPLIES];
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struct regulator *cpvdd;
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struct regulator *dbvdd2;
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struct regulator *dbvdd3;
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int rev;
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@ -803,6 +805,52 @@ static int wm5100_cp_ev(struct snd_soc_dapm_widget *w,
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}
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}
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static int wm5100_dbvdd_ev(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol,
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int event)
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{
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struct snd_soc_codec *codec = w->codec;
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struct wm5100_priv *wm5100 = snd_soc_codec_get_drvdata(codec);
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struct regulator *regulator;
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int ret;
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switch (w->shift) {
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case 2:
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regulator = wm5100->dbvdd2;
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break;
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case 3:
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regulator = wm5100->dbvdd3;
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break;
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default:
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BUG();
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return 0;
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}
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switch (event) {
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case SND_SOC_DAPM_PRE_PMU:
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ret = regulator_enable(regulator);
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if (ret != 0) {
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dev_err(codec->dev, "Failed to enable DBVDD%d: %d\n",
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w->shift, ret);
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return ret;
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}
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return ret;
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case SND_SOC_DAPM_POST_PMD:
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ret = regulator_disable(regulator);
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if (ret != 0) {
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dev_err(codec->dev, "Failed to enable DBVDD%d: %d\n",
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w->shift, ret);
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return ret;
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}
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return ret;
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default:
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BUG();
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return 0;
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}
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}
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static void wm5100_log_status3(struct snd_soc_codec *codec, int val)
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{
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if (val & WM5100_SPK_SHUTDOWN_WARN_EINT)
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@ -880,6 +928,10 @@ SND_SOC_DAPM_SUPPLY("CP2", WM5100_MIC_CHARGE_PUMP_1, WM5100_CP2_ENA_SHIFT, 0,
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SND_SOC_DAPM_SUPPLY("CP2 Active", WM5100_MIC_CHARGE_PUMP_1,
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WM5100_CP2_BYPASS_SHIFT, 1, wm5100_cp_ev,
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SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_SUPPLY("DBVDD2", SND_SOC_NOPM, 2, 0, wm5100_dbvdd_ev,
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SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_SUPPLY("DBVDD3", SND_SOC_NOPM, 3, 0, wm5100_dbvdd_ev,
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SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_SUPPLY("MICBIAS1", WM5100_MIC_BIAS_CTRL_1, WM5100_MICB1_ENA_SHIFT,
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0, NULL, 0),
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@ -1122,10 +1174,14 @@ static const struct snd_soc_dapm_route wm5100_dapm_routes[] = {
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{ "AIF1RX8", NULL, "SYSCLK" },
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{ "AIF2RX1", NULL, "SYSCLK" },
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{ "AIF2RX1", NULL, "DBVDD2" },
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{ "AIF2RX2", NULL, "SYSCLK" },
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{ "AIF2RX2", NULL, "DBVDD2" },
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{ "AIF3RX1", NULL, "SYSCLK" },
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{ "AIF3RX1", NULL, "DBVDD3" },
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{ "AIF3RX2", NULL, "SYSCLK" },
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{ "AIF3RX2", NULL, "DBVDD3" },
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{ "AIF1TX1", NULL, "SYSCLK" },
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{ "AIF1TX2", NULL, "SYSCLK" },
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@ -1137,10 +1193,14 @@ static const struct snd_soc_dapm_route wm5100_dapm_routes[] = {
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{ "AIF1TX8", NULL, "SYSCLK" },
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{ "AIF2TX1", NULL, "SYSCLK" },
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{ "AIF2TX1", NULL, "DBVDD2" },
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{ "AIF2TX2", NULL, "SYSCLK" },
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{ "AIF2TX2", NULL, "DBVDD2" },
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{ "AIF3TX1", NULL, "SYSCLK" },
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{ "AIF3TX1", NULL, "DBVDD3" },
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{ "AIF3TX2", NULL, "SYSCLK" },
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{ "AIF3TX2", NULL, "DBVDD3" },
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{ "MICBIAS1", NULL, "CP2" },
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{ "MICBIAS2", NULL, "CP2" },
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@ -2250,12 +2310,26 @@ static int wm5100_probe(struct snd_soc_codec *codec)
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goto err_core;
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}
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wm5100->dbvdd2 = regulator_get(&i2c->dev, "DBVDD2");
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if (IS_ERR(wm5100->dbvdd2)) {
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ret = PTR_ERR(wm5100->dbvdd2);
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dev_err(&i2c->dev, "Failed to get DBVDD2: %d\n", ret);
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goto err_cpvdd;
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}
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wm5100->dbvdd3 = regulator_get(&i2c->dev, "DBVDD3");
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if (IS_ERR(wm5100->dbvdd3)) {
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ret = PTR_ERR(wm5100->dbvdd3);
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dev_err(&i2c->dev, "Failed to get DBVDD2: %d\n", ret);
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goto err_dbvdd2;
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}
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ret = regulator_bulk_enable(ARRAY_SIZE(wm5100->core_supplies),
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wm5100->core_supplies);
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if (ret != 0) {
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dev_err(codec->dev, "Failed to enable core supplies: %d\n",
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ret);
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goto err_cpvdd;
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goto err_dbvdd3;
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}
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if (wm5100->pdata.ldo_ena) {
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@ -2432,6 +2506,10 @@ static int wm5100_probe(struct snd_soc_codec *codec)
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err_enable:
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regulator_bulk_disable(ARRAY_SIZE(wm5100->core_supplies),
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wm5100->core_supplies);
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err_dbvdd3:
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regulator_put(wm5100->dbvdd3);
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err_dbvdd2:
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regulator_put(wm5100->dbvdd2);
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err_cpvdd:
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regulator_put(wm5100->cpvdd);
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err_core:
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@ -2458,6 +2536,8 @@ static int wm5100_remove(struct snd_soc_codec *codec)
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gpio_set_value_cansleep(wm5100->pdata.ldo_ena, 0);
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gpio_free(wm5100->pdata.ldo_ena);
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}
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regulator_put(wm5100->dbvdd3);
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regulator_put(wm5100->dbvdd2);
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regulator_put(wm5100->cpvdd);
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regulator_bulk_free(ARRAY_SIZE(wm5100->core_supplies),
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wm5100->core_supplies);
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