linux-kernel - Re: [PATCH 4/6] ASoC: ux500: Update tx tdm slots configuration

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Message-ID: <20130508160332.GB12970@balto.lan>
Date:	Wed, 8 May 2013 18:03:32 +0200
From:	Fabio Baltieri <fabio.baltieri@...aro.org>
To:	Mark Brown <broonie@...nel.org>
Cc:	Liam Girdwood <lgirdwood@...il.com>, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org,
	Linus Walleij <linus.walleij@...aro.org>,
	Lee Jones <lee.jones@...aro.org>,
	Ola Lilja <ola.o.lilja@...ricsson.com>
Subject: Re: [PATCH 4/6] ASoC: ux500: Update tx tdm slots configuration

On Wed, May 08, 2013 at 12:01:49PM +0100, Mark Brown wrote:
> On Wed, May 08, 2013 at 09:14:19AM +0200, Fabio Baltieri wrote:
> > Update ab8500-codec and mop500_ab8500 tx slot configuration to reflect
> > the actual one used by STE.  Also update a wrong comment in the process.
> 
> This seems wrong, the individual chip drivers should just be doing
> whatever they're being told by the machine driver.  Sounds like there's
> two fixes needed here - one is to change the TDM API so that the chip
> drivers are just implementing configuration supplied by the machine
> driver and the other is to change the configuration being done to
> whatever is desired.

Ok so, this patch was really just going to slightly align the
configuration with the STE driver.  I'll drop it and just fix the wrong
comment as a trivial patch.

For the reimplementation with channel configuration from machine driver,
I actually went through that, but was not able to find the reason why
there is a slot offset somewhere (example: I request 0x0001 for first
slot on the DAI and that shows up on slot 8 on the codec), so I just
updated the hardcoded value.  I'll try to get some explanation for that.

Fabio

-- 
Fabio Baltieri
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