[linux-sunxi] Re: [PATCH v8 2/2] ASoc: sun4i-codec: Add FM, Line and Mic inputs

Maxime Ripard
2016-03-21T18:06:05Z

On Sat, Mar 19, 2016 at 05:51:24PM +0100, Danny Milosavljevic wrote:
> Hi Maxime,
>
> > IIRC, in order to have shared controls, you just needed to share the
> > controls structure.
>
> Yeah. I did this and it actually works in a way, but in doesn't do all that I want.
>
> There are two different kinds of sharing I mean:
>
> The one kind with the controls structure causes the control to rename itself
> to not state its mixer but there's still just one slider in the end.
> So instead of "Left Mixer Left XXX" it will just say "Left XXX" if you put it
> inside Left Mixer and Right Mixer and share the entry - for this hardware,
> that's of doubtful use.
>
> But what I would like to have is that the same Mic Playback Volume (the very
> same bits) be used for different sliders
> (1) Mic1 Left Channel Playback Volume
> (2) Mic1 Right Channel Playback Volume
> (3) Mic2 Left Channel Playback Volume (!!)
> (4) Mic2 Right Channel Playback Volume
>
> Additionally, Mic1 Playback and Mic2 Playback have two mutes each in the
> hardware (all separately switchable).
>
> Now if we could make the alsamixer selems look like the following,
> that would be nice:
>
> Mic1_Playback Mic2_Playback
>
> MM MM
> ii ii
> cc cc
>
> PP PP
> ll ll
> aa aa
> yy yy
> bb bb
> aa aa
> cc cc
> kk kk
>
> VV VV
> oo oo
> ll ll
> uu uu
> mm mm
> ee ee
>
> [Mm] [Nn]
> ^ ^^-- so are those, separately
> +-- this one is a different muter :-)
>
> Where the text is the same, it's supposed to signify the same bits
> in the hardware.
>
> Right now in v8 it's (and that's going to take a lot of horizontal space,
> sorry - I know E-Mails like this aren't so nice to read):
>
> Mic_Playback_Volume Left_Mic1_Playback_Switch Right_Mic1_Playback_Switch Left_Mic2_Playback_Switch Right_Mic2_Playback_Switch
>
> MM
> ii
> cc
>
> PP
> ll
> aa
> yy
> bb
> aa
> cc
> kk
>
> VV
> oo
> ll
> uu
> mm
> ee
>
> [MM] [NN] [OO] [PP]
> ^- WTF ^- WTF ^- WTF ^- WTF
>
> (Actually, it's worse - believe it or not, that's how the simplified explanation looks)

I don't think you should focus too much on alsamixer, there's other
tools to modify the configuration.

Maxime

--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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