From: James Courtier-Dutton <James@superbug.co.uk>
To: Ajay Jain <ajay050@gmail.com>
Cc: alsa-devel@lists.sf.net
Subject: Re: Sound Driver Querry
Date: Fri, 29 Dec 2006 13:11:24 +0000 [thread overview]
Message-ID: <459513FC.1000008@superbug.co.uk> (raw)
In-Reply-To: <b92b327b0612290416u49fa792axd5737a79bed3498e@mail.gmail.com>
Ajay Jain wrote:
>> What arm cpu are you using ?
>
> We are using an ARM926-EJS. The interface between the code chip and
> the cpu, is by our own proprietary I2C controller. Is it possible for
> us to integrate this?
I2C interfaces (for codec control, not audio samples) are very simple,
so supporting that should be quite easy.
It depends what is connected to the I2C interface. If it is just the
codec, then you can write some simple ALSA specific code. If it also
links to other I2C devices on the same bus, then you should implement
support for it via the Linux Kernel I2C bus.
> BTW, the patch you just mentioned, is that not in the main line
> 2.6.latest? We are using a 2.6.14, so is it possible to backport it?
>
>> OSS audio is deprecated in the Linux 2.6 kernel.
> Ok, but we have a working & robust AC97 WM9712 driver for the same. It
> would be much more convenient for us if we have something similar in
> OSS. So is this guy (the WM8751), supported in any form in the OSS?
>
Do you have the I2S interface already working?
The WM9751 might default to some sensible register values, so purely
sending audio samples to the I2S interface might be enough to get your
sound out.
James
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prev parent reply other threads:[~2006-12-29 13:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-28 7:10 Sound Driver Querry Ajay Jain
2006-12-29 11:57 ` Liam Girdwood
2006-12-29 12:16 ` Ajay Jain
2006-12-29 13:01 ` Liam Girdwood
2006-12-29 13:11 ` James Courtier-Dutton [this message]
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