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SubjectRe: omap4-droid4: voice call support was Re: [PATCHv5,5/5] ARM: dts: omap4-droid4: add soundcard
Hi,

On Thu, Mar 29, 2018 at 09:06:11AM -0700, Tony Lindgren wrote:
> * Sebastian Reichel <sebastian.reichel@collabora.co.uk> [180329 15:47]:
> > Hi,
> >
> > On Thu, Mar 29, 2018 at 06:59:04AM -0700, Tony Lindgren wrote:
> > > > I think cpcap is always the clock and frame master, but I think
> > > > mdm6600 is the remote side and OMAP is not involved at all.
> > >
> > > OK. So could it be just an alsamixer on/off toggle then for
> > > "Modem" or something similar?
> >
> > I think so. We might want to have an "Mode" enum instead, though.
> > That can be extended, once we unlock the other modes (bluetooth,
> > bluetooth call).
>
> OK. Seems in addition to the "Mode" enum, we also need
> some other switch for modem on and off toggle?

I don't think so. DAPM should automatically power on/off the
modem if there is a valid path from some CPCAP output/input.
Since the mode enum will "disconnect" the modem in the DAPM
graph, it should be enabled/disabled automatically.

> I guess most people want to save the preferred "Mode" enum,
> then for the duration of the call enable the selected mode.
>
> And I guess the mute is already there for the mic with 'm'
> in alsamixer for conf calls :)

Yes.

-- Sebastian
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