Hi Takashi, Jaroslav,
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.
Thanks,
Jaya Kumar
Signed-off-by: Jaya Kumar <jayakumar.alsa@xxxxxxxxx>
---
include/sound/ac97_codec.h | 1 +
sound/pci/ac97/ac97_patch.c | 2 ++
2 files changed, 3 insertions(+)
diff -X cs5535audio.dontdiff -X linux-2.6.17-rc5/Documentation/dontdiff -uprN linux-2.6.17-rc5-ad1888pm/include/sound/ac97_codec.h linux-2.6.17-rc5-ad1888vref/include/sound/ac97_codec.h
--- linux-2.6.17-rc5-ad1888pm/include/sound/ac97_codec.h 2006-06-18 15:50:59.000000000 +0800
+++ linux-2.6.17-rc5-ad1888vref/include/sound/ac97_codec.h 2006-06-22 04:06:35.000000000 +0800
@@ -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 */
diff -X cs5535audio.dontdiff -X linux-2.6.17-rc5/Documentation/dontdiff -uprN linux-2.6.17-rc5-ad1888pm/sound/pci/ac97/ac97_patch.c linux-2.6.17-rc5-ad1888vref/sound/pci/ac97/ac97_patch.c
--- linux-2.6.17-rc5-ad1888pm/sound/pci/ac97/ac97_patch.c 2006-06-18 15:40:03.000000000 +0800
+++ linux-2.6.17-rc5-ad1888vref/sound/pci/ac97/ac97_patch.c 2006-06-22 22:57:22.000000000 +0800
@@ -1873,6 +1873,8 @@ static const struct snd_kcontrol_new snd
.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,
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