[alsa-devel] [PATCH 07/21] ASoC: io: Prevent use of regmap if request fails

Lee Jones lee.jones at linaro.org
Thu Jul 26 16:51:13 CEST 2012

On 26/07/12 12:42, Mark Brown wrote:
> On Thu, Jul 26, 2012 at 12:38:17PM +0100, Lee Jones wrote:
>> On 26/07/12 12:32, Mark Brown wrote:
>>> Again, this makes no sense.  If we're explicitly being asked to use
>>> regmap then we should be using regmap or just failing to set up I/O
>>> (which is obviously a catastrophic failure).
>> How much work is there involved in regmap:ing a device, so that
>> dev_get_regmap() doesn't fail?
> Trivial if it's on a supported bus, otherwise you just need to write the
> bus.  But why do you care if dev_get_regmap() fails?  We only try to use
> regmap if the driver asked for regmap I/O (or doesn't have registers at
> all in which case it doesn't matter since we never do any I/O).  What
> you appear to be saying here is that you're using regmap on a device
> which doesn't have a regmap set up which is clearly never going to work
> terribly well...

I don't think we want to use regmap at all, but we're forced to by 
soc-core. How do we over-ride that behavior? By writing some nonsense 
into codec->control_data?

Lee Jones
Linaro ST-Ericsson Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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