[alsa-devel] [PATCH] ALSA: hda - Fix headset mic input after muted internal mic (Dell/Realtek)

[Takashi Iwai]

At Tue, 3 Dec 2013 15:52:37 +0800,
Kailang wrote:
> 
> Hi David,
> 
> The verb was ADC digital mute(bit 6 default 1).
> Switch internal mic and headset mic will run alc_headset_mode_default.
> The coef index 0x11 will set to 0x0041.
> Because headset mode was fixed type. It doesn't need to run 
> alc_determine_headset_type.
> So, the value still keep 0x0041. ADC was muted.
> Your patch will solve this errors.

OK, I added your comment in the changelog and add Cc to stable, then
applied to for-linus branch now.


thanks,

Takashi

> 
> Thanks.
> Kailang
> 
> 
> > By trial and error, I found this patch could work around an issue
> > where the headset mic would stop working if you switch between the
> > internal mic and the headset mic, and the internal mic was muted.
> >
> > It still takes a second or two before the headset mic actually starts
> > working, but still better than nothing.
> >
> > I'd like to add stable to this patch, but I'd like Kailang's ack first
> > because I don't know what the verbs really do.
> >
> > BugLink: https://bugs.launchpad.net/bugs/1256840
> > Signed-off-by: David Henningsson <david.henningsson at canonical.com>
> > ---
> > sound/pci/hda/patch_realtek.c |    2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
> > index 537991c..85d1c8b 100644
> > --- a/sound/pci/hda/patch_realtek.c
> > +++ b/sound/pci/hda/patch_realtek.c
> > @@ -3338,6 +3338,7 @@ static void alc_headset_mode_ctia(struct hda_codec 
> > *codec)
> >  alc_write_coef_idx(codec, 0x18, 0x7388);
> >  break;
> >  case 0x10ec0668:
> > + alc_write_coef_idx(codec, 0x11, 0x0001);
> >  alc_write_coef_idx(codec, 0x15, 0x0d60);
> >  alc_write_coef_idx(codec, 0xc3, 0x0000);
> >  break;
> > @@ -3366,6 +3367,7 @@ static void alc_headset_mode_omtp(struct hda_codec 
> > *codec)
> >  alc_write_coef_idx(codec, 0x18, 0x7388);
> >  break;
> >  case 0x10ec0668:
> > + alc_write_coef_idx(codec, 0x11, 0x0001);
> >  alc_write_coef_idx(codec, 0x15, 0x0d50);
> >  alc_write_coef_idx(codec, 0xc3, 0x0000);
> >  break;
> > -- 
> > 1.7.9.5
> >
> >
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>