linux-kernel - Re: [PATCH 2/3] swarm_cs4297: Rename AC97 registers to use sound/ac97

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Date:	Mon, 18 Jun 2012 14:50:53 -0300
From:	Ezequiel Garcia <elezegarcia@...il.com>
To:	Takashi Iwai <tiwai@...e.de>
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

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?

Thanks for reviewing,
Ezequiel.
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