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[ALSA] hda-codec - Fix STAC922x capture boost level 

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>
This commit is contained in:
Takashi Iwai 2007-05-29 19:01:37 +02:00 committed by Jaroslav Kysela
parent f9acba4347
commit 897cc188f7
3 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
sound/pci/hda/hda_codec.c
View File

@ -713,6 +713,19 @@ static u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)
return info->amp_caps;
}
int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
unsigned int caps)
{
struct hda_amp_info *info;
info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, dir, 0));
if (!info)
return -EINVAL;
info->amp_caps = caps;
info->status |= INFO_AMP_CAPS;
return 0;
}
/*
* read the current volume to info
* if the cache exists, read the cache value.

2
sound/pci/hda/hda_local.h
View File

@ -277,5 +277,7 @@ static inline u32 get_wcaps(struct hda_codec *codec, hda_nid_t nid)
return codec->wcaps[nid - codec->start_nid];
}
int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
unsigned int caps);
#endif /* __SOUND_HDA_LOCAL_H */

7
sound/pci/hda/patch_sigmatel.c
View File

@ -2159,6 +2159,13 @@ static int patch_stac927x(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;
}