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>
diff --git a/sound/soc/codecs/rt5670.c b/sound/soc/codecs/rt5670.c
index 5e54ac9..3ddb34e 100644
--- a/sound/soc/codecs/rt5670.c
+++ b/sound/soc/codecs/rt5670.c
@@ -576,6 +576,18 @@
}
+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 @@
{ "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" },