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ASoC: Implement WM8994/58 DAC and ADC oversampling control

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

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Mark Brown 2010-12-09 12:07:44 +00:00
parent 249c5156b8
commit 154b26aa9e
1 changed files with 13 additions and 0 deletions
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13
sound/soc/codecs/wm8994.c
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@ -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,