From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: Re: Connecting a codec to an i2c codec driver.
Date: Fri, 25 Mar 2011 11:43:28 +0000
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On Thu, Mar 24, 2011 at 12:56:27PM -0700, Steve Calfee wrote:

> Any tips on how to turn on the debug printouts in the alsa and
> device systems? Do I recompile the kernel with new options etc? I
> already lowered the /proc/sys/kernel/printk level to 8.

Add #define DEBUG at the top of the source file to turn dev_dbg() on by
default.