[ALSA] AD1888 mixer controls for DC mode

This patch adds two mixer controls. The V_REFOUT enable is a
documented register that couples the microphone input lines
to the V_REFOUT DC source. The High Pass Filter enable in the
AC97_AD_TEST2 (0x5c) is an undocumented register provided by
Miller Puckette via Analog Devices that enables the AD codec
to apply a high pass filter to the input.

Signed-off-by: Jaya Kumar <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
Signed-off-by: Jaroslav Kysela <[email protected]>
This commit is contained in:
Jaya Kumar 2006-06-23 15:18:41 +02:00 • committed by Jaroslav Kysela
commit 02856b5684
2 changed files with 3 additions and 0 deletions

View file

@ -265,6 +265,7 @@
/* specific - Analog Devices */
#define AC97_AD_TEST 0x5a /* test register */
#define AC97_AD_TEST2 0x5c /* undocumented test register 2 */
#define AC97_AD_CODEC_CFG 0x70 /* codec configuration */
#define AC97_AD_JACK_SPDIF 0x72 /* Jack Sense & S/PDIF */
#define AC97_AD_SERIAL_CFG 0x74 /* Serial Configuration */