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@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
sound/soc/codecs/wm8994.c | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index b599616..af104ac 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -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,
--
1.7.1
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
