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SubjectRe: [alsa-devel] HDA: no sound [was: mmotm 2010-10-20-15-01 uploaded]
At Fri, 22 Oct 2010 13:31:53 +0200,
Clemens Ladisch wrote:
>
> Jiri Slaby wrote:
> > On 10/21/2010 10:05 AM, Takashi Iwai wrote:
> > > commit de8c85f7840e5e29629de95f5af24297fb325e0b
> > > ALSA: HDA: Sigmatel: work around incorrect master muting
> >
> > Reverting this one helps.
>
> This one introduced even more wrong volume information on some codecs.
> Pleasy try this patch on top:

Argh! There is always a reason why we should define a constant.
I applied the fix now.

This explains why the old patch worked on Colin's machine.
His codec chip is different (STAC9200?), and it doesn't go in this
code path but has a static Master volume creation.


thanks,

Takashi

>
> --- a/sound/pci/hda/patch_sigmatel.c
> +++ b/sound/pci/hda/patch_sigmatel.c
> @@ -32,6 +32,7 @@
> #include <sound/core.h>
> #include <sound/asoundef.h>
> #include <sound/jack.h>
> +#include <sound/tlv.h>
> #include "hda_codec.h"
> #include "hda_local.h"
> #include "hda_beep.h"
> @@ -1145,7 +1146,7 @@ static int stac92xx_build_controls(struct hda_codec *codec)
> /* correct volume offset */
> vmaster_tlv[2] += vmaster_tlv[3] * spec->volume_offset;
> /* minimum value is actually mute */
> - vmaster_tlv[3] |= 0x1000;
> + vmaster_tlv[3] |= TLV_DB_SCALE_MUTE;
> err = snd_hda_add_vmaster(codec, "Master Playback Volume",
> vmaster_tlv, slave_vols);
> if (err < 0)
>


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