Date: Mon, 21 Mar 2016 19:06:05 +0100
From: Maxime Ripard <maxime.ripard@free-electrons.com>
To: Danny Milosavljevic <dannym@scratchpost.org>
Cc: Mark Brown <broonie@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        alsa-devel@alsa-project.org, Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>, Liam Girdwood <lgirdwood@gmail.com>,
        linux-sunxi@googlegroups.com
Subject: Re: [linux-sunxi] Re: [PATCH v8 2/2] ASoc: sun4i-codec: Add FM, Line
 and Mic inputs
Message-ID: <20160321180605.GE30977@lukather>
References: <20151221123148.1ab6480b@dayas>
 <20151221123416.51aa938e@dayas>
 <20151227182157.GI30359@lukather>
 <20151228040649.475a742f@dayas>
 <20160106220908.GE9631@lukather>
 <20160109164832.515d69b0@dayas>
 <20160312085222.226d89bf@scratchpost.org>
 <20160314104939.GL8418@lukather>
 <20160319175124.6bfe3617@scratchpost.org>
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On Sat, Mar 19, 2016 at 05:51:24PM +0100, Danny Milosavljevic wrote:
> Hi Maxime,
>=20
> > IIRC, in order to have shared controls, you just needed to share the
> > controls structure.
>=20
> Yeah. I did this and it actually works in a way, but in doesn't do all th=
at I want.
>=20
> There are two different kinds of sharing I mean:
>=20
> The one kind with the controls structure causes the control to rename its=
elf
> to not state its mixer but there's still just one slider in the end.=20
> So instead of "Left Mixer Left XXX" it will just say "Left XXX" if you pu=
t it=20
> inside Left Mixer and Right Mixer and share the entry - for this hardware=
,=20
> that's of doubtful use.
>=20
> But what I would like to have is that the same Mic Playback Volume (the v=
ery=20
> 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
>=20
> Additionally, Mic1 Playback and Mic2 Playback have two mutes each in the=
=20
> hardware (all separately switchable).
>=20
> Now if we could make the alsamixer selems look like the following,=20
> that would be nice:
>=20
> Mic1_Playback     Mic2_Playback
>=20
>   MM                  MM
>   ii                  ii
>   cc                  cc
>=20
>   PP                  PP
>   ll                  ll
>   aa                  aa
>   yy                  yy
>   bb                  bb
>   aa                  aa
>   cc                  cc
>   kk                  kk
>=20
>   VV                  VV
>   oo                  oo
>   ll                  ll
>   uu                  uu
>   mm                  mm
>   ee                  ee
>=20
>  [Mm]                [Nn]
>    ^                  ^^-- so are those, separately
>    +-- this one is a different muter :-)
>=20
> Where the text is the same, it's supposed to signify the same bits=20
> in the hardware.
>=20
> Right now in v8 it's (and that's going to take a lot of horizontal space,=
=20
> sorry - I know E-Mails like this aren't so nice to read):
>=20
> Mic_Playback_Volume Left_Mic1_Playback_Switch Right_Mic1_Playback_Switch =
Left_Mic2_Playback_Switch Right_Mic2_Playback_Switch
>=20
>   MM                 =20
>   ii                 =20
>   cc                 =20
>=20
>   PP                 =20
>   ll                 =20
>   aa                 =20
>   yy                 =20
>   bb                 =20
>   aa                 =20
>   cc                 =20
>   kk                 =20
>=20
>   VV                 =20
>   oo                 =20
>   ll                 =20
>   uu                 =20
>   mm                 =20
>   ee                 =20
>=20
>                     [MM]                      [NN]                       =
[OO]                      [PP]
>                       ^- WTF                   ^- WTF                    =
  ^- WTF                   ^- WTF
>=20
> (Actually, it's worse - believe it or not, that's how the simplified expl=
anation looks)

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

Maxime

--=20
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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