diff options
Diffstat (limited to 'sound/soc/codecs/arizona.c')
| -rw-r--r-- | sound/soc/codecs/arizona.c | 147 |
1 files changed, 146 insertions, 1 deletions
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c index 0cb2962..88f6df2 100644 --- a/sound/soc/codecs/arizona.c +++ b/sound/soc/codecs/arizona.c @@ -851,6 +851,134 @@ int arizona_hp_ev(struct snd_soc_dapm_widget *w, } EXPORT_SYMBOL_GPL(arizona_hp_ev); +static int arizona_dvfs_enable(struct snd_soc_codec *codec) +{ + const struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec); + struct arizona *arizona = priv->arizona; + int ret; + + ret = regulator_set_voltage(arizona->dcvdd, 1800000, 1800000); + if (ret) { + dev_err(codec->dev, "Failed to boost DCVDD: %d\n", ret); + return ret; + } + + ret = regmap_update_bits(arizona->regmap, + ARIZONA_DYNAMIC_FREQUENCY_SCALING_1, + ARIZONA_SUBSYS_MAX_FREQ, + ARIZONA_SUBSYS_MAX_FREQ); + if (ret) { + dev_err(codec->dev, "Failed to enable subsys max: %d\n", ret); + regulator_set_voltage(arizona->dcvdd, 1200000, 1800000); + return ret; + } + + return 0; +} + +static int arizona_dvfs_disable(struct snd_soc_codec *codec) +{ + const struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec); + struct arizona *arizona = priv->arizona; + int ret; + + ret = regmap_update_bits(arizona->regmap, + ARIZONA_DYNAMIC_FREQUENCY_SCALING_1, + ARIZONA_SUBSYS_MAX_FREQ, 0); + if (ret) { + dev_err(codec->dev, "Failed to disable subsys max: %d\n", ret); + return ret; + } + + ret = regulator_set_voltage(arizona->dcvdd, 1200000, 1800000); + if (ret) { + dev_err(codec->dev, "Failed to unboost DCVDD: %d\n", ret); + return ret; + } + + return 0; +} + +int arizona_dvfs_up(struct snd_soc_codec *codec, unsigned int flags) +{ + struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec); + int ret = 0; + + mutex_lock(&priv->dvfs_lock); + + if (!priv->dvfs_cached && !priv->dvfs_reqs) { + ret = arizona_dvfs_enable(codec); + if (ret) + goto err; + } + + priv->dvfs_reqs |= flags; +err: + mutex_unlock(&priv->dvfs_lock); + return ret; +} +EXPORT_SYMBOL_GPL(arizona_dvfs_up); + +int arizona_dvfs_down(struct snd_soc_codec *codec, unsigned int flags) +{ + struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec); + unsigned int old_reqs; + int ret = 0; + + mutex_lock(&priv->dvfs_lock); + + old_reqs = priv->dvfs_reqs; + priv->dvfs_reqs &= ~flags; + + if (!priv->dvfs_cached && old_reqs && !priv->dvfs_reqs) + ret = arizona_dvfs_disable(codec); + + mutex_unlock(&priv->dvfs_lock); + return ret; +} +EXPORT_SYMBOL_GPL(arizona_dvfs_down); + +int arizona_dvfs_sysclk_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec); + int ret = 0; + + mutex_lock(&priv->dvfs_lock); + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + if (priv->dvfs_reqs) + ret = arizona_dvfs_enable(codec); + + priv->dvfs_cached = false; + break; + case SND_SOC_DAPM_PRE_PMD: + /* We must ensure DVFS is disabled before the codec goes into + * suspend so that we are never in an illegal state of DVFS + * enabled without enough DCVDD + */ + priv->dvfs_cached = true; + + if (priv->dvfs_reqs) + ret = arizona_dvfs_disable(codec); + break; + default: + break; + } + + mutex_unlock(&priv->dvfs_lock); + return ret; +} +EXPORT_SYMBOL_GPL(arizona_dvfs_sysclk_ev); + +void arizona_init_dvfs(struct arizona_priv *priv) +{ + mutex_init(&priv->dvfs_lock); +} +EXPORT_SYMBOL_GPL(arizona_init_dvfs); + static unsigned int arizona_sysclk_48k_rates[] = { 6144000, 12288000, @@ -1266,7 +1394,7 @@ static int arizona_hw_params_rate(struct snd_pcm_substream *substream, struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec); struct arizona_dai_priv *dai_priv = &priv->dai[dai->id - 1]; int base = dai->driver->base; - int i, sr_val; + int i, sr_val, ret; /* * We will need to be more flexible than this in future, @@ -1282,6 +1410,23 @@ static int arizona_hw_params_rate(struct snd_pcm_substream *substream, } sr_val = i; + switch (priv->arizona->type) { + case WM5102: + case WM8997: + if (arizona_sr_vals[sr_val] >= 88200) + ret = arizona_dvfs_up(codec, ARIZONA_DVFS_SR1_RQ); + else + ret = arizona_dvfs_down(codec, ARIZONA_DVFS_SR1_RQ); + + if (ret) { + arizona_aif_err(dai, "Failed to change DVFS %d\n", ret); + return ret; + } + break; + default: + break; + } + switch (dai_priv->clk) { case ARIZONA_CLK_SYSCLK: switch (priv->arizona->type) { |