xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ASoC: nau8825: add programmable biquad filter control

Browse Source 
Add programmable biquad filter configuration control for user space.
The filter is configurable for low pass filters, high pass filters,
Notch filter, etc in the ADC and DAC path.

Signed-off-by: John Hsu <KCHSU0@nuvoton.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
John Hsu
2016-05-31 11:57:41 +08:00
committed by Mark Brown
parent ffd72505b0
commit 18d8306d7e
2 changed files with 61 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
sound/soc/codecs/nau8825.h
View File

@@ -231,6 +231,14 @@
#define NAU8825_I2S_MS_MASTER (1 << NAU8825_I2S_MS_SFT)
#define NAU8825_I2S_MS_SLAVE (0 << NAU8825_I2S_MS_SFT)
/* BIQ_CTRL (0x20) */
#define NAU8825_BIQ_WRT_SFT 4
#define NAU8825_BIQ_WRT_EN (1 << NAU8825_BIQ_WRT_SFT)
#define NAU8825_BIQ_PATH_SFT 0
#define NAU8825_BIQ_PATH_MASK (1 << NAU8825_BIQ_PATH_SFT)
#define NAU8825_BIQ_PATH_ADC (0 << NAU8825_BIQ_PATH_SFT)
#define NAU8825_BIQ_PATH_DAC (1 << NAU8825_BIQ_PATH_SFT)
/* ADC_RATE (0x2b) */
#define NAU8825_ADC_SYNC_DOWN_SFT 0
#define NAU8825_ADC_SYNC_DOWN_MASK 0x3