linux-kernel - Re: [PATCH 1/1] Input/Joystick Driver: add support AD7142 joystick driver (v2)

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Date:	Fri, 25 Apr 2008 18:09:52 +0800
From:	"Bryan Wu" <cooloney@...nel.org>
To:	"Dmitry Torokhov" <dmitry.torokhov@...il.com>
Cc:	khali@...ux-fr.org, andre@...wigglers.org,
	linux-input@...r.kernel.org, i2c@...sensors.org,
	linux-kernel@...r.kernel.org, vapier.adi@...il.com,
	"Michael Hennerich" <michael.hennerich@...log.com>
Subject: Re: [PATCH 1/1] Input/Joystick Driver: add support AD7142 joystick driver (v2)

On Sat, Apr 19, 2008 at 1:15 AM, Dmitry Torokhov
<dmitry.torokhov@...il.com> wrote:
> Hi Bryan,
>
>
>  On Thu, Mar 27, 2008 at 11:38:30AM -0700, Bryan Wu wrote:
>  > +     input->keybit[BIT_WORD(BTN_BASE)] = BIT_MASK(BTN_BASE) |
>  > +                                             BIT_MASK(BTN_BASE2) |
>  > +                                             BIT_MASK(BTN_BASE3) |
>  > +                                             BIT_MASK(BTN_BASE4);
>  > +     input->keybit[BIT_WORD(KEY_UP)] |=  BIT_MASK(KEY_UP) |
>  > +                                             BIT_MASK(KEY_DOWN) |
>  > +                                             BIT_MASK(KEY_LEFT) |
>  > +                                             BIT_MASK(KEY_RIGHT);
>  > +
>
>  Why don't you use REL_X/REL_Y to report directional movement? Using
>  buttons for that is pretty unusual.
>

In our development board, it includes UP/DOWN/LEFT/RIGHT 4 buttons. So
this driver matches this.
Please found some information about the hardware as below:
http://docs.blackfin.uclinux.org/doku.php?id=capacitance_touch_sensors&s[]=ad7142

Thanks
-Bryan
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