diff options
| author | Oder Chiou <oder_chiou@realtek.com> | 2016-06-17 11:02:24 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-06-22 15:55:05 +0100 |
| commit | c9506bb84b62917ae88087545ccb756d35655397 (patch) | |
| tree | 42ee024d5483f2c2b9adccaac895b5e7a6b7eef6 /sound/soc | |
| parent | 1a695a905c18548062509178b98bc91e67510864 (diff) | |
| download | linux-c9506bb84b62917ae88087545ccb756d35655397.tar.bz2 | |
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 <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/codecs/rt5514.c | 32 | ||||
| -rw-r--r-- | sound/soc/codecs/rt5514.h | 3 |
2 files changed, 35 insertions, 0 deletions
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, diff --git a/sound/soc/codecs/rt5514.h b/sound/soc/codecs/rt5514.h index 6ad8a612f659..766f5a666ebe 100644 --- a/sound/soc/codecs/rt5514.h +++ b/sound/soc/codecs/rt5514.h @@ -12,6 +12,8 @@ #ifndef __RT5514_H__ #define __RT5514_H__ +#include <linux/clk.h> + #define RT5514_DEVICE_ID 0x10ec5514 #define RT5514_RESET 0x2000 @@ -240,6 +242,7 @@ enum { struct rt5514_priv { struct snd_soc_codec *codec; struct regmap *i2c_regmap, *regmap; + struct clk *mclk; int sysclk; int sysclk_src; int lrck; |