[ALSA] hda-codec - Fix STAC922x capture boost level
Takashi Iwai [Tue, 29 May 2007 17:01:37 +0000 (19:01 +0200)]
STAC922x provides the capture boost level up to 4, but actually it
works only up to 2.  Since the range of the mixer is automatically
defined from amp-capability bits, we need to override the value
beforehand.  snd_hda_override_amp_caps() is introduced for this
purpose.
The function patch_stac922x() calls this for NID 0x12 (Mux Capture
Volume).  This should fix another recording problem on Intel Macs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/pci/hda/patch_sigmatel.c

index dd005ed..addcb2a 100644 (file)
@@ -2127,6 +2127,13 @@ static int patch_stac922x(struct hda_codec *codec)
 
        codec->patch_ops = stac92xx_patch_ops;
 
+       /* Fix Mux capture level; max to 2 */
+       snd_hda_override_amp_caps(codec, 0x12, HDA_OUTPUT,
+                                 (0 << AC_AMPCAP_OFFSET_SHIFT) |
+                                 (2 << AC_AMPCAP_NUM_STEPS_SHIFT) |
+                                 (0x27 << AC_AMPCAP_STEP_SIZE_SHIFT) |
+                                 (0 << AC_AMPCAP_MUTE_SHIFT));
+
        return 0;
 }