Commit e50334d4 authored by Bard Liao's avatar Bard Liao Committed by Mark Brown
Browse files

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: default avatarBard Liao <bardliao@realtek.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 044b724a

sound/soc/codecs/rt5670.c

+14 −2
Original line number Diff line number Diff line
@@ -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" },