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ALSA: hda - Fix the silent front with independent-HP for VIA codecs

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Unmute DAC on front speaker path when Independent HP is enabled.

When to enable Independent HP, the front speaker won't output any sound
for VT1708, VT1708B, VT1708S and VT1702.
I find the via_independent_hp_put() routine will mute DAC 0 path in Mixer 0.
For these codecs, when using Independent HP, there could have two
independent streams, one is from DAC0-->Mixer0-->Front Pin, the other is
from DAC3-->GainSW3-->Side Pin.
So I added a check for DAC-->Mixer path in activate_output_path().

If current path is DAC-->Mixer, no need to mute DAC index in Mixer.
In fact, to change connection of Headphone pin or Mux connected with HP
is enough.

Signed-off-by: Lydia Wang <lydiawang@viatech.com.cn>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Lydia Wang 2011-07-01 10:55:07 +08:00 committed by Takashi Iwai
parent 350434ee53
commit e5e1468140
1 changed files with 3 additions and 0 deletions
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3
sound/pci/hda/patch_via.c
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@ -451,6 +451,9 @@ static void activate_output_path(struct hda_codec *codec, struct nid_path *path,
if (enable && path->multi[i])
snd_hda_codec_write(codec, dst, 0,
AC_VERB_SET_CONNECT_SEL, idx);
if (get_wcaps_type(get_wcaps(codec, src)) == AC_WID_AUD_OUT &&
get_wcaps_type(get_wcaps(codec, dst)) == AC_WID_AUD_MIX)
continue;
if (have_mute(codec, dst, HDA_INPUT)) {
int val = enable ? AMP_IN_UNMUTE(idx) :
AMP_IN_MUTE(idx);