Date: Thu, 26 Oct 2006 13:14:53 -0400 (EDT)
From: Nicolas Pitre <nico@cam.org>
Subject: Re: UCB1400 driver problem in pxa270
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To: saravanan_sprt@hotmail.com
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On Fri, 27 Oct 2006, saravanan_sprt@hotmail.com wrote:

> Hi all,
> 
> I am a newbie in using UCB1400 chip. Iam using Toradex Colibri module PXA270 as my target system with UCB1400 chip integrated.
> I have a problem in enabling the audio system using UCB1400. Can anyone point me, how could I enable and use the UCB1400 driver on linux 2.6.12 platform. I have applied Nicolas Pitre patches and configured kernel CONFIG_INPUT, CONFIG_SND, CONFIG_SOUND,CONFIG_SND_PXA2xx_AC97, CONFIG_SND_PXA2xx_PCM to  =y. The kernel builds well, but on boot the UCB1400 driver didn't gets registered and there are no more interrupts enabled in /proc/interrupts with following boot message,
> .....
> .....
> ts: UCB1x00 touchscreen protocol output
> Advanced Linux Sound Architecture Driver Version 1.0.9rc2 ( The MAr 24 10:34:34 2005 UTC)
> ALSA device list:
>   No soundcards found.
> ....
> ....
> 
> The problem seems to be due to driver_register(pxa2xx-ac97) and bus match.
> 
> Any help will be appreciated .

Look in arch/arm/mach-pxa/mainstone.c for mst_audio_device.  This is an 
example of the  platform_device structure the pxa2xx-ac97 driver is 
looking for.


Nicolas
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