linux-kernel - Re: [PATCH v2] Input: tsc2005

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Message-ID: <20151028054829.GA13066@deathstar>
Date:	Wed, 28 Oct 2015 00:48:29 -0500
From:	Michael Welling <mwelling@...e.org>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	Tony Lindgren <tony@...mide.com>, Pavel Machek <pavel@....cz>,
	Felipe Balbi <balbi@...com>,
	Sebastian Reichel <sre@...nel.org>,
	Roger Quadros <rogerq@...com>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-input@...r.kernel.org
Subject: Re: [PATCH v2] Input: tsc2005 - Add support for tsc2004

On Tue, Oct 27, 2015 at 10:41:52PM -0700, Dmitry Torokhov wrote:
> On Wed, Oct 28, 2015 at 12:23:34AM -0500, Michael Welling wrote:
> > On Tue, Oct 27, 2015 at 06:51:41PM -0700, Dmitry Torokhov wrote:
> > > Hi Michael,
> > > On Tue, Oct 27, 2015 at 07:17:01PM -0500, Michael Welling wrote:
> > > > Adds support for the i2c based tsc2004. Support was added to the tsc2005 driver
> > > > due to the similarity of the devices.
> > > > 
> > > > Signed-off-by: Michael Welling <mwelling@...e.org>
> > > > ---
> > > > v2: Fixes Kconfig based on report for 0-day build bot.
> > > > 
> > > >  .../bindings/input/touchscreen/tsc2004.txt         |  38 ++++
> > > >  drivers/input/touchscreen/Kconfig                  |   7 +-
> > > >  drivers/input/touchscreen/tsc2005.c                | 206 ++++++++++++++++-----
> > > 
> > > Could we maybe split the code into core, spi and i2c drivers instead of
> > > keeping everything together and rely on #ifdefs?
> > >
> > Dmitry,
> > 
> > So then we have three files?
> > Perhaps:
> > drivers/input/touchscreen/tsc2004.c
> > drivers/input/touchscreen/tsc2005.c
> > drivers/input/touchscreen/tsc200x-core.c
> > 
> > Please ellaborate exactly how you want things to be structured and named so
> > that I don't waste time in revision.
> 
> Sure, the naming above is fine. You'd have to export the
> tsc_common_probe() and put I2C and SPI bits into tsc2005.c/tsc2004.c
> 
> I'd probably have separate Kconfig entries for TSC2004 and TSC2005 and
> have the core be invisible module that the former 2 explicitly "select".
> 
> Does this make sense?

Yes it does.

I have been told that using wildcard names is bad in other subsystems.
Perhaps tsc200x-core.c should be called something else because it has
nothing to do with the tsc2007 but it is covered by the wildcard.

You you think this is a big deal?

> 
> Thanks.
> 
> -- 
> Dmitry
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