From: James Simmons <jsimmons@linux-fbdev.org>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Unisys pc keyboard new keys patch, kernel 2.4.3
Date: Sun, 15 Apr 2001 09:40:47 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.31.0104150915320.984-100000@linux.local> (raw)
> [One of the things for 2.5 is 15- or 31-bit keycodes.
> The 7-bits we have today do no longer suffice. I have a 132-key keyboard.]
Or for 2.5.X you could use EVIOCGKEYCODE or EVIOCSKEYCODE using
/dev/eventX. Also the input api supports up to 220 different keys and
could support up to 255. If you app needs to use a large keycode space
then use this instead. Its better to use this interface especially
for embedded systems that have only a serial console, but sometimes
we need to use a regular keyboard. Consider for example a hand held iPAQ.
Usually their is no keyboard attached. Here you have a graphical interface
(using framebuffer) and a touch screen. So here I like to have a kernel
that uses fbdev without the VT console system and input drivers to
interface with the device. Debugging can be done by the serial console.
If I attach a keyboard I like to be able to use it without having to have
a console system needing to be built in. Remember every byte of space
counts. Getting keycode via the console layer should eventually be
replaced by this approach.
MS: (n) 1. A debilitating and surprisingly widespread affliction that
renders the sufferer barely able to perform the simplest task. 2. A disease.
James Simmons [jsimmons@linux-fbdev.org] ____/|
fbdev/console/gfx developer \ o.O|
http://www.linux-fbdev.org =(_)=
http://linuxgfx.sourceforge.net U
http://linuxconsole.sourceforge.net
next reply other threads:[~2001-04-15 16:41 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-15 16:40 James Simmons [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-04-17 17:51 James Simmons
2001-04-17 16:55 James Simmons
2001-04-17 17:16 ` Alan Cox
2001-04-13 13:02 Jan Dvorak
2001-04-13 22:21 ` Guest section DW
2001-04-13 23:53 ` H. Peter Anvin
2001-04-16 6:29 ` Eric W. Biederman
2001-04-16 17:41 ` Guest section DW
2001-04-16 19:52 ` Albert D. Cahalan
2001-04-16 23:53 ` Alan Cox
2001-04-17 5:30 ` Eric W. Biederman
2001-04-16 6:54 ` Albert D. Cahalan
2001-04-16 6:59 ` H. Peter Anvin
2001-04-14 18:12 ` Jan Dvorak
2001-04-15 6:29 ` H. Peter Anvin
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