From: Matt Sealey <matt@genesi-usa•com>
To: spitzauer_77@gmx•de
Cc: linuxppc-dev@ozlabs•org
Subject: Re: Writing an AC97 device driver for MPC52xx
Date: Sun, 06 May 2007 23:25:14 +0100 [thread overview]
Message-ID: <463E55CA.3040204@genesi-usa.com> (raw)
In-Reply-To: <20070503142259.222640@gmx.net>
There's a driver available for the Efika and Lite5200B boards.
It needs a lot of improvement but it's there. I can send you a copy of the
patch for the AC97 if you like, seperate to the list. No point duplicating
work. I'm sure others can do the same if they have anything else (although
the driver will no doubt be Sylvain's :)
--
Matt Sealey <matt@genesi-usa•com>
Genesi, Manager, Developer Relations
spitzauer_77@gmx•de wrote:
> Hi all,
>
> i try to write device driver for an AC97 external codec on MPC5200 controller. The PSC1 and 2 on MPC5200 can be configured as AC97.
>
> I'm a little bit new in this topic of writing linux drivers and read a lot in the internet about this. (e.g. http://www.alsa-project.org/~iwai/writing-an-alsa-driver/x1052.htm )
>
> But i have some questions:
>
> - Is there a simple driver maybe on other platforms available, which have the same problem solved?? Most of the sound drivers are coupled with pci.
>
> - I only have to write the pure hardware (PSC) stuff, or?? I'm little confused on how i should handle this with AC97 (ac97_codec.c) and ALSA.
>
> - Is this for my driver the correct layer:
> User App -> ALSA -> AC97 -> "My driver" -> Hardware MPC52xx
>
>
> I'm glad for any hint!
>
> Spitzauer
prev parent reply other threads:[~2007-05-06 22:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-03 14:22 Writing an AC97 device driver for MPC52xx spitzauer_77
2007-05-06 22:25 ` Matt Sealey [this message]
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