From c9506bb84b62917ae88087545ccb756d35655397 Mon Sep 17 00:00:00 2001 From: Oder Chiou Date: Fri, 17 Jun 2016 11:02:24 +0800 Subject: ASoC: rt5514: Add the MCLK handling The patch adds the control of MCLK that depends on the status of DAPM. Signed-off-by: Oder Chiou Signed-off-by: Mark Brown --- sound/soc/codecs/rt5514.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'sound/soc/codecs/rt5514.c') diff --git a/sound/soc/codecs/rt5514.c b/sound/soc/codecs/rt5514.c index 879bf60f4965..e6ae2309e5f8 100644 --- a/sound/soc/codecs/rt5514.c +++ b/sound/soc/codecs/rt5514.c @@ -799,10 +799,41 @@ static int rt5514_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, return 0; } +static int rt5514_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + struct rt5514_priv *rt5514 = snd_soc_codec_get_drvdata(codec); + int ret; + + switch (level) { + case SND_SOC_BIAS_PREPARE: + if (IS_ERR(rt5514->mclk)) + break; + + if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_ON) { + clk_disable_unprepare(rt5514->mclk); + } else { + ret = clk_prepare_enable(rt5514->mclk); + if (ret) + return ret; + } + break; + + default: + break; + } + + return 0; +} + static int rt5514_probe(struct snd_soc_codec *codec) { struct rt5514_priv *rt5514 = snd_soc_codec_get_drvdata(codec); + rt5514->mclk = devm_clk_get(codec->dev, "mclk"); + if (PTR_ERR(rt5514->mclk) == -EPROBE_DEFER) + return -EPROBE_DEFER; + rt5514->codec = codec; return 0; @@ -858,6 +889,7 @@ struct snd_soc_dai_driver rt5514_dai[] = { static struct snd_soc_codec_driver soc_codec_dev_rt5514 = { .probe = rt5514_probe, .idle_bias_off = true, + .set_bias_level = rt5514_set_bias_level, .controls = rt5514_snd_controls, .num_controls = ARRAY_SIZE(rt5514_snd_controls), .dapm_widgets = rt5514_dapm_widgets, -- cgit v1.2.3