diff options
Diffstat (limited to 'sound/soc/codecs/arizona.c')
| -rw-r--r-- | sound/soc/codecs/arizona.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c index 846ca079845f..10be50ae2f76 100644 --- a/sound/soc/codecs/arizona.c +++ b/sound/soc/codecs/arizona.c @@ -1233,6 +1233,46 @@ static int arizona_set_opclk(struct snd_soc_codec *codec, unsigned int clk, return -EINVAL; } +int arizona_clk_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 *arizona = dev_get_drvdata(codec->dev->parent); + unsigned int val; + int clk_idx; + int ret; + + ret = regmap_read(arizona->regmap, w->reg, &val); + if (ret) { + dev_err(codec->dev, "Failed to check clock source: %d\n", ret); + return ret; + } + + val = (val & ARIZONA_SYSCLK_SRC_MASK) >> ARIZONA_SYSCLK_SRC_SHIFT; + + switch (val) { + case ARIZONA_CLK_SRC_MCLK1: + clk_idx = ARIZONA_MCLK1; + break; + case ARIZONA_CLK_SRC_MCLK2: + clk_idx = ARIZONA_MCLK2; + break; + default: + return 0; + } + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + return clk_prepare_enable(arizona->mclk[clk_idx]); + case SND_SOC_DAPM_POST_PMD: + clk_disable_unprepare(arizona->mclk[clk_idx]); + return 0; + default: + return 0; + } +} +EXPORT_SYMBOL_GPL(arizona_clk_ev); + int arizona_set_sysclk(struct snd_soc_codec *codec, int clk_id, int source, unsigned int freq, int dir) { |