linux-kernel - Re: [PATCHv3 1/2] Input: twl4030-keypad

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Date:	Tue, 12 Nov 2013 04:25:09 +0100
From:	Sebastian Reichel <sre@...ian.org>
To:	Pavel Machek <pavel@....cz>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Dmitry Torokhov <dtor@...l.ru>, linux-input@...r.kernel.org,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Landley <rob@...dley.net>,
	Grant Likely <grant.likely@...aro.org>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHv3 1/2] Input: twl4030-keypad - add device tree support

Hi,

On Mon, Nov 11, 2013 at 11:19:41PM +0100, Pavel Machek wrote:
> > +	if (of_get_property(np, "linux,input-no-autorepeat", NULL))
> > +		keypad_data->no_autorepeat = true;
> 
> From 2/2:
> 
> +Optional Properties specific to linux:
> +- linux,keypad-no-autorepeat: do not enable autorepeat feature.
> 
> I'm confused now.

good catch! That happens when one tries to mimic other drivers :/

I just checked all DT input drivers for autorepeat keyword:

DRIVER              CODE                        DOCUMENTATION
twl4030-keypad      linux,input-no-autorepeat   linux,keypad-no-autorepeat
omap4-keypad        linux,input-no-autorepeat   linux,keypad-no-autorepeat
samsung-keypad      linux,input-no-autorepeat   linux,keypad-no-autorepeat
stmpe-keypad        st,no-autorepeat            st,no-autorepeat
spear-keyboard      autorepeat                  autorepeat
tca8418-keypad      keypad,autorepeat           --- not documented ---
gpio-matrix-keypad  linux,no-autorepeat         linux,no-autorepeat
gpio-keys-polled    autorepeat                  autorepeat
gpio-keys           autorepeat                  --- no documentation ---

Any suggestions how to continue fixing this mess? I guess first of
all the documentation of omap4-keypad, samsung-keypad and of course
the new twl4030-keypad driver should be fixed.

Next it would be nice to choose one standard property name for this
and use it for twl4030-keypad. I suggest to use "linux,input-no-autorepeat".

-- Sebastian

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