At Tue, 17 Apr 2007 17:40:04 +0200,
Prakash Punnoor wrote:
>
> Am Montag 16 April 2007 schrieb Takashi Iwai:
> > At Mon, 16 Apr 2007 20:42:10 +0200,
> > > I guess writing 0xb000 is not enough, as the lower 6 bits are gain value.
> > > Or does the gain get applied somewhere else?
> >
> > It corresponds to "Mic Boost" control.
>
> I don't get it. I am referring to:
>
> { 0x1c, AC_VERB_SET_AMP_GAIN_MUTE, 0xb000},
I thought you referring 0x0f. 0x1c corresponds to Surround Playback
{Volume|Switch}.
> Looking at the spec, it tells me your are setting output amp, left and right
> to unmuted state with 0 gain.
Yes, intentionally done so. The default values are muted.
> (BTW, what about using more readable values? I thought drivers should be
> written with less magic numbers? IE:
>
> #define OUT_AMP (1<<15)
> #define LEFT_AMP (1<<13)
> #define RIGHT_AMP (1<<12)
> #define MUTE_AMP (1<<7)
It's AMP_OUT_MUTE. The driver was written before the macro.
>
> > Then, we seems to need reset 0x0f and 0x10 at each channel setting.
> > Try the patch below. This will reset 0x0f and 0x10 to 0 when 6ch
> > channel mode is chosen. On 2ch channel mode, these values should be
> > back to make mic and line working (and no surround outputs, of
> > course).
>
> Patch works for me. Just the "volume is 0 on ch setting change" bug left.
Did you unmute and adjust surround and CLFE volumes properly
beforehand?
Takashi
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