Re: [PATCH 10/53] Input: atmel_mxt_ts - Add memory access interfacevia sysfs

From: Mark Brown
Date: Thu Jun 06 2013 - 05:49:08 EST


On Wed, Jun 05, 2013 at 02:07:15PM -0700, Dmitry Torokhov wrote:
> On Wed, Jun 05, 2013 at 09:31:39PM +0100, Nick Dyer wrote:

> > It's partly path dependence - it was implemented like this because regmap
> > wasn't in mainline at the point when I wrote it. Having a dependency on
> > regmap would now be a API break complicating support of customers using
> > older kernels than mainline. I would also have to update a bunch of

> This was never a good argument for introducing an interface into the
> kernel.

Indeed, and regmap is very easy to backport - it demands little from the
rest of the kernel and most of that is bus specific so you can pretty
much just copy it into an older kernel.

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