[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 <jayakumar.alsa@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/pci/ac97/ac97_patch.c b/sound/pci/ac97/ac97_patch.c
index 7f197c7..094cfc1 100644
--- a/sound/pci/ac97/ac97_patch.c
+++ b/sound/pci/ac97/ac97_patch.c
@@ -1824,6 +1824,8 @@
.get = snd_ac97_ad1888_lohpsel_get,
.put = snd_ac97_ad1888_lohpsel_put
},
+ AC97_SINGLE("V_REFOUT Enable", AC97_AD_MISC, 2, 1, 1),
+ AC97_SINGLE("High Pass Filter Enable", AC97_AD_TEST2, 12, 1, 1),
AC97_SINGLE("Spread Front to Surround and Center/LFE", AC97_AD_MISC, 7, 1, 0),
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,