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Date:	Tue, 19 Jun 2012 07:38:11 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Ezequiel Garcia <elezegarcia@...il.com>
Cc:	linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
	Ralf Baechle <ralf@...ux-mips.org>,
	Jaroslav Kysela <perex@...ex.cz>,
	Clemens Ladisch <clemens@...isch.de>
Subject: Re: [PATCH 2/3] swarm_cs4297: Rename AC97 registers to use sound/ac97_codec.h definitions

At Mon, 18 Jun 2012 14:50:53 -0300,
Ezequiel Garcia wrote:
> 
> Hi Takashi,
> 
> On Mon, Jun 18, 2012 at 11:04 AM, Takashi Iwai <tiwai@...e.de> wrote:
> > At Mon, 11 Jun 2012 16:58:50 -0300,
> > Ezequiel Garcia wrote:
> >>
> >> This patch removes the last usage of linux/ac97_codec.h
> >> by renaming ac97 registers to use sound/ac97_codec.h definitions.
> >> This will enable us to remove linux/ac97_codec.h.
> >>
> >> Not even compilation tested.
> >>
> >> Cc: Ralf Baechle <ralf@...ux-mips.org>
> >> Cc: Jaroslav Kysela <perex@...ex.cz>
> >> Cc: Takashi Iwai <tiwai@...e.de>
> >> Cc: Clemens Ladisch <clemens@...isch.de>
> >> Signed-off-by: Ezequiel Garcia <elezegarcia@...il.com>
> >> ---
> >> Hi all,
> >>
> >> This patch is important so we can remove linux/ac97_codec.h usage.
> >> Since this driver is mips related, I can't test it until I install
> >> a mips toolchain.
> >> If someone can compile this for me, or even test it with real
> >> hardware I think it would be better.
> >> If not then I can install a mips toolchain and compile it myself,
> >> but I won't be able to test it on real hardware.
> >>
> >> This patch should be treated with carefully and be applied only
> >> if someone manages to test it.
> >
> > A slight concern by this change is that the driver includes
> > sound/ac97_codec.h although it's based on OSS framework.
> > sound/ac97_codec.h is the header for ALSA ac97 structs, and this can't
> > be mixed up with OSS.
> >
> > If the intention is only about AC97 register definition, we may split
> > ac97_codec.h into ac97_regs.h and ac97_codecs.h where the former
> > contains only the register definitions (thus framework-neutral) and
> > the latter includes the former.
> >
> >
> 
> Yes, splitting sounds good to me. It could be useful for other ac97
> drivers (e.g. em28xx).
> 
> I wonder if anyone is using this swarm driver (and/or can test).
> 
> Also, is there any date scheduled for OSS removal?

Well, so far, we've got rid of OSS drivers only that have the
equivalent ALSA drivers.  It's a difficult question when we are
allowed to remove such old stuff...


Takashi
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