From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: linux-input@vger.kernel.org
Subject: Re: A question about touchscreen absmax value
Date: Mon, 16 Nov 2009 09:12:03 -0800 [thread overview]
Message-ID: <20091116171202.GC24026@core.coreip.homeip.net> (raw)
In-Reply-To: <4B00B08E.2030905@samsung.com>
Hi Joonyoung,
On Mon, Nov 16, 2009 at 10:53:18AM +0900, Joonyoung Shim wrote:
> Hi, all.
>
> I have a question about touchscreen resolution. My touchscreen device
> can report the position from 0 to 1023 of x and y coordinates, so i
> setted the absmax of input device to 1023. BTW, i only can get from 0 to
> 479 x position and to 799 y position because the LCD resolution of the
> target is 480 x 800. I wonder which value is setted to the absmax - 479
> and 799 or 1023.
I believe driver should, by default, set absmin and absmax to match the
limits of the hardware/protocol. In your case it would be 1023. The
driver may choose to accept additional infromation from platform data, if
present, you can also adjust absmin/absmax etc via ioctl durng the
bootup sequence.
Hope this helps.
--
Dmitry
next prev parent reply other threads:[~2009-11-16 17:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-16 1:53 A question about touchscreen absmax value Joonyoung Shim
2009-11-16 17:12 ` Dmitry Torokhov [this message]
2009-11-17 3:00 ` Joonyoung Shim
2009-11-17 5:48 ` Dmitry Torokhov
2009-11-17 6:18 ` Joonyoung Shim
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