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

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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;
}