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authorJohn Hsu <KCHSU0@nuvoton.com>2016-12-02 04:48:58 +0300
committerMark Brown <broonie@kernel.org>2016-12-06 17:35:13 +0300
commit5f1516d52f9287a94dc3b9d57c370ed01802a911 (patch)
tree2e3436a473477e670ea9cfdefb91dcbf5b222538 /sound/soc/codecs/nau8825.h
parent2263fddcd0ba9d8e75a90b1359f92d3b9d0b78b3 (diff)
downloadlinux-5f1516d52f9287a94dc3b9d57c370ed01802a911.tar.xz
ASoC: nau8825: disable sinc filter for high THD of ADC
This bit will enable 4th order SINC filter. =1, filter will enable; but it consumes higher power. =0, the sinc filter is disable, and it should always keep 0 value to get high THD. Therefor, disable the filter when codec initiation for better performance when recording. Signed-off-by: John Hsu <KCHSU0@nuvoton.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/nau8825.h')
-rw-r--r--sound/soc/codecs/nau8825.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/soc/codecs/nau8825.h b/sound/soc/codecs/nau8825.h
index 0672a25617b9..5d1704e73241 100644
--- a/sound/soc/codecs/nau8825.h
+++ b/sound/soc/codecs/nau8825.h
@@ -269,6 +269,8 @@
#define NAU8825_BIQ_PATH_DAC (1 << NAU8825_BIQ_PATH_SFT)
/* ADC_RATE (0x2b) */
+#define NAU8825_ADC_SINC4_SFT 4
+#define NAU8825_ADC_SINC4_EN (1 << NAU8825_ADC_SINC4_SFT)
#define NAU8825_ADC_SYNC_DOWN_SFT 0
#define NAU8825_ADC_SYNC_DOWN_MASK 0x3
#define NAU8825_ADC_SYNC_DOWN_32 0