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Commit 154b26aa authored by Mark Brown's avatar Mark Brown
Browse files

ASoC: Implement WM8994/58 DAC and ADC oversampling control 



The oversampling rate of the DAC and ADC can be controlled to optimise
for either low power consumption or maximum performance.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
parent 249c5156

sound/soc/codecs/wm8994.c

+13 −0
Original line number Diff line number Diff line
@@ -558,6 +558,16 @@ static const struct soc_enum aif2dacl_src = 
static const struct soc_enum aif2dacr_src =

	SOC_ENUM_SINGLE(WM8994_AIF2_CONTROL_2, 14, 2, aif_chan_src_text);



static const char *osr_text[] = {

	"Low Power", "High Performance",

};



static const struct soc_enum dac_osr =

	SOC_ENUM_SINGLE(WM8994_OVERSAMPLING, 0, 2, osr_text);



static const struct soc_enum adc_osr =

	SOC_ENUM_SINGLE(WM8994_OVERSAMPLING, 1, 2, osr_text);



static void wm8958_mbc_apply(struct snd_soc_codec *codec, int mbc, int start)

{

	struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
@@ -834,6 +844,9 @@ SOC_DOUBLE("AIF1ADC2 HPF Switch", WM8994_AIF1_ADC2_FILTERS, 12, 11, 1, 0), 
SOC_ENUM("AIF2ADC HPF Mode", aif2adc_hpf),

SOC_DOUBLE("AIF2ADC HPF Switch", WM8994_AIF2_ADC_FILTERS, 12, 11, 1, 0),



SOC_ENUM("ADC OSR", adc_osr),

SOC_ENUM("DAC OSR", dac_osr),



SOC_DOUBLE_R_TLV("DAC1 Volume", WM8994_DAC1_LEFT_VOLUME,

		 WM8994_DAC1_RIGHT_VOLUME, 1, 96, 0, digital_tlv),

SOC_DOUBLE_R("DAC1 Switch", WM8994_DAC1_LEFT_VOLUME,