From: Russell King <rmk+lkml@arm.linux.org.uk>
To: Sau Dan Lee <danlee@informatik.uni-freiburg.de>
Cc: Vojtech Pavlik <vojtech@suse.cz>, linux-kernel@vger.kernel.org
Subject: Re: keyboard problem with 2.6.6
Date: Sun, 30 May 2004 12:53:30 +0100 [thread overview]
Message-ID: <20040530125330.A25212@flint.arm.linux.org.uk> (raw)
In-Reply-To: <xb71xl2b0to.fsf@savona.informatik.uni-freiburg.de>; from danlee@informatik.uni-freiburg.de on Sun, May 30, 2004 at 01:40:03PM +0200
On Sun, May 30, 2004 at 01:40:03PM +0200, Sau Dan Lee wrote:
> Now, what prevents people from connecting terminals to a computer via
> the PS/2 mouse port?
Apart from electrically blowing the PS/2 port, the data format of PS/2
is well defined and fixed, whereas a UART (8250-based) port is more
flexible. PS/2 also has the idea of acknowledgement from the peripheral
device for each byte transferred, and is synchronous, whereas UARTs
have no acknowledgement and are asyncrhonous.
So, any thought that the two ports are similar compatible with each other,
either from the electrical or protocol points of view is just a dead loss.
How do these mice work on both ports then? They can detect which port
they're connected to and the electronics inside automatically configures
itself depending on which port they're connected to.
> Your approach in the input system completely rules out this
> possibility.
As from above, its more than just the input system - its the protocol
and electrical characteristics which completely rules out the
possibility - which in turn makes it nonsensible to support such an
idea in software.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 PCMCIA - http://pcmcia.arm.linux.org.uk/
2.6 Serial core
next prev parent reply other threads:[~2004-05-30 11:53 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-30 10:39 keyboard problem with 2.6.6 Sau Dan Lee
2004-05-30 11:18 ` Vojtech Pavlik
2004-05-30 11:40 ` Sau Dan Lee
2004-05-30 11:53 ` Russell King [this message]
2004-05-30 12:43 ` Vojtech Pavlik
2004-05-30 13:25 ` Sau Dan Lee
2004-05-30 13:42 ` SERIO_USERDEV patch for 2.6 Vojtech Pavlik
2004-05-30 15:09 ` Dmitry Torokhov
2004-05-30 15:58 ` Vojtech Pavlik
2004-05-30 16:10 ` Giuseppe Bilotta
2004-05-30 21:00 ` Vojtech Pavlik
2004-05-31 12:43 ` Giuseppe Bilotta
2004-05-30 16:16 ` Dmitry Torokhov
2004-05-30 20:51 ` Vojtech Pavlik
2004-05-30 23:50 ` Dmitry Torokhov
2004-05-31 6:30 ` Vojtech Pavlik
2004-06-01 8:18 ` Tuukka Toivonen
2004-06-03 10:21 ` [PATCH] " Tuukka Toivonen
2004-06-03 12:21 ` Sau Dan Lee
2004-06-03 13:46 ` Luciano Moreira - igLnx
2004-06-03 21:23 ` Vojtech Pavlik
2004-06-01 16:50 ` Sau Dan Lee
2004-06-01 18:18 ` Dmitry Torokhov
2004-06-01 22:23 ` Giuseppe Bilotta
2004-06-01 23:50 ` Dmitry Torokhov
2004-06-02 15:08 ` Giuseppe Bilotta
2004-06-01 21:01 ` keyboard problem with 2.6.6 jsimmons
2004-06-01 21:12 ` Valdis.Kletnieks
2004-05-30 13:54 ` Eduard Bloch
2004-05-30 14:03 ` Vojtech Pavlik
2004-06-01 21:03 ` jsimmons
2004-06-04 14:11 ` Pavel Machek
[not found] <xb7oenxyqly.fsf@savona.informatik.uni-freiburg.de>
[not found] ` <200406071551.i57Fpl89023562@turing-police.cc.vt.edu>
[not found] ` <xb7zn7fwdia.fsf@savona.informatik.uni-freiburg.de>
[not found] ` <200406071636.i57Gafh7024942@turing-police.cc.vt.edu>
[not found] ` <xb7r7sqwncc.fsf@savona.informatik.uni-freiburg.de>
[not found] ` <200406081502.i58F2gF3013622@turing-police.cc.vt.edu>
2004-06-09 8:17 ` Sau Dan Lee
2004-06-09 16:56 ` Valdis.Kletnieks
2004-06-09 17:12 ` Sau Dan Lee
2004-06-09 17:29 ` Valdis.Kletnieks
-- strict thread matches above, loose matches on Subject: below --
2004-06-06 9:43 Sau Dan Lee
2004-06-06 9:37 Sau Dan Lee
2004-06-06 11:29 ` Martin Schlemmer
2004-06-06 12:07 ` Vojtech Pavlik
2004-06-06 15:09 ` Dmitry Torokhov
2004-06-06 16:13 ` Sau Dan Lee
[not found] ` <200406061929.45169.vda@port.imtp.ilyichevsk.odessa.ua>
[not found] ` <200406061140.35929.dtor_core@ameritech.net>
2004-06-06 16:51 ` Sau Dan Lee
[not found] <xb7ekp2b34y.fsf@savona.informatik.uni-freiburg.de>
[not found] ` <20040530112138.GC1377@ucw.cz>
2004-05-30 11:43 ` Sau Dan Lee
2004-05-30 12:45 ` Vojtech Pavlik
2004-05-30 13:25 ` Sau Dan Lee
2004-05-30 10:57 Sau Dan Lee
2004-06-01 11:31 ` Pavel Machek
2004-06-01 14:06 ` John Bradford
2004-05-30 10:45 Sau Dan Lee
2004-05-30 11:20 ` Vojtech Pavlik
2004-05-28 13:59 Tuukka Toivonen
2004-05-29 13:14 ` Vojtech Pavlik
2004-06-04 14:54 ` Tuukka Toivonen
2004-06-04 16:06 ` Vojtech Pavlik
2004-05-25 20:16 Chris Osicki
2004-05-26 7:54 ` Sau Dan Lee
2004-05-28 13:33 ` Giuseppe Bilotta
2004-05-28 17:37 ` Sau Dan Lee
2004-05-29 13:12 ` Vojtech Pavlik
2004-05-30 9:45 ` Sau Dan Lee
2004-05-30 10:19 ` Vojtech Pavlik
2004-05-30 11:25 ` Sau Dan Lee
2004-05-30 11:40 ` Brad Campbell
2004-05-30 12:01 ` Oliver Neukum
2004-05-30 12:22 ` Sau Dan Lee
2004-05-30 12:32 ` Oliver Neukum
2004-05-30 12:16 ` Vojtech Pavlik
2004-05-30 12:40 ` Sau Dan Lee
2004-05-30 12:52 ` Vojtech Pavlik
2004-05-30 16:09 ` Stefan Seyfried
2004-05-30 17:26 ` Dmitry Torokhov
2004-06-04 13:58 ` Pavel Machek
2004-06-04 18:17 ` Horst von Brand
2004-06-04 18:37 ` Valdis.Kletnieks
2004-06-04 19:33 ` Denis Vlasenko
2004-06-04 19:50 ` Valdis.Kletnieks
2004-06-04 20:48 ` Denis Vlasenko
2004-06-04 18:39 ` Pavel Machek
2004-06-04 18:46 ` Sau Dan Lee
2004-06-04 19:09 ` Pavel Machek
2004-06-06 9:01 ` Sau Dan Lee
2004-06-06 16:40 ` Pavel Machek
2004-05-28 19:57 ` Andries Brouwer
2004-05-28 19:41 ` Andries Brouwer
2004-05-28 20:10 ` Andries Brouwer
[not found] ` <20040528214620.GA2352@gucio>
2004-05-29 13:23 ` Andries Brouwer
2004-05-29 13:46 ` Vojtech Pavlik
2004-05-29 14:30 ` Andries Brouwer
2004-05-29 14:41 ` Vojtech Pavlik
2004-05-29 15:12 ` Giuseppe Bilotta
[not found] <MPG.1b2111558bc2d299896a2@news.gmane.org.suse.lists.linux.kernel>
[not found] ` <20040525201616.GE6512@gucio.suse.lists.linux.kernel>
[not found] ` <xb7hdu3fwsj.fsf@savona.informatik.uni-freiburg.de.suse.lists.linux.kernel>
[not found] ` <xb7aczscv0q.fsf@savona.informatik.uni-freiburg.de.suse.lists.linux.kernel>
[not found] ` <20040529131233.GA6185@ucw.cz.suse.lists.linux.kernel>
[not found] ` <xb7y8nab65d.fsf@savona.informatik.uni-freiburg.de.suse.lists.linux.kernel>
[not found] ` <20040530101914.GA1226@ucw.cz.suse.lists.linux.kernel>
[not found] ` <xb765aeb1i3.fsf@savona.informatik.uni-freiburg.de.suse.lists.linux.kernel>
[not found] ` <20040530121606.GA1496@ucw.cz.suse.lists.linux.kernel>
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