diff options
| author |   Bard Liao <bardliao@realtek.com> | 2014-11-17 15:27:21 +0800 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2014-11-25 12:12:53 +0000 |
| commit | e50334d4e1c3bacfeb3bb1530f73a419d4ec6832 (patch) | |
| tree | 3df3591386bef3b3c4fc441258cd99ebf8e27eba /sound/soc/codecs/rt5670.c | |
| parent | ASoC: rt5670: make bias level more reasonable (diff) | |
| download | linux-dev-e50334d4e1c3bacfeb3bb1530f73a419d4ec6832.tar.xz linux-dev-e50334d4e1c3bacfeb3bb1530f73a419d4ec6832.zip | |
ASoC: rt5670: check if asrc is useable
To use ASRC, the sysclk should be faster than 384 times sample rate of I2S1.
Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/rt5670.c')
| -rw-r--r-- | sound/soc/codecs/rt5670.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/sound/soc/codecs/rt5670.c b/sound/soc/codecs/rt5670.c index 5e54ac957e47..3ddb34ef77d7 100644 --- a/sound/soc/codecs/rt5670.c +++ b/sound/soc/codecs/rt5670.c @@ -576,6 +576,18 @@ static int is_using_asrc(struct snd_soc_dapm_widget *source, } +static int can_use_asrc(struct snd_soc_dapm_widget *source, + struct snd_soc_dapm_widget *sink) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(source->dapm); + struct rt5670_priv *rt5670 = snd_soc_codec_get_drvdata(codec); + + if (rt5670->sysclk > rt5670->lrck[RT5670_AIF1] * 384) + return 1; + + return 0; +} + /* Digital Mixer */ static const struct snd_kcontrol_new rt5670_sto1_adc_l_mix[] = { SOC_DAPM_SINGLE("ADC1 Switch", RT5670_STO1_ADC_MIXER, @@ -1639,8 +1651,8 @@ static const struct snd_soc_dapm_route rt5670_dapm_routes[] = { { "DAC Mono Right Filter", NULL, "DAC MONO R ASRC", is_using_asrc }, { "DAC Stereo1 Filter", NULL, "DAC STO ASRC", is_using_asrc }, - { "I2S1", NULL, "I2S1 ASRC" }, - { "I2S2", NULL, "I2S2 ASRC" }, + { "I2S1", NULL, "I2S1 ASRC", can_use_asrc}, + { "I2S2", NULL, "I2S2 ASRC", can_use_asrc}, { "DMIC1", NULL, "DMIC L1" }, { "DMIC1", NULL, "DMIC R1" }, |