From: Dmitry Torokhov <dtor_core@ameritech.net>
To: linux-kernel@vger.kernel.org
Subject: Re: 2.6.9-rc2-mm4
Date: Fri, 1 Oct 2004 00:51:36 -0500
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Cc: "Randy.Dunlap" <rddunlap@osdl.org>, "J.A. Magallon" <jamagallon@able.es>
References: <20040926181021.2e1b3fe4.akpm@osdl.org> <1096590131l.11697l.1l@werewolf.able.es> <20040930173116.6de40c54.rddunlap@osdl.org>
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On Thursday 30 September 2004 07:31 pm, Randy.Dunlap wrote:
> On Fri, 01 Oct 2004 00:22:11 +0000 J.A. Magallon wrote:
> 
> | mice: PS/2 mouse device common for all mice
> | input: AT Translated Set 2 keyboard on isa0060/serio0
> | input: ImPS/2 Generic Wheel Mouse on isa0060/serio1
> | 
> | If not, how can I change the protocol ? A kernel bootparam ?
> | In old X, i used 'Option "Protocol" "MouseManPlusPS/2"'.
> 
> From Documentation/kernel-parameters.txt:
> 
> 	psmouse.proto=  [HW,MOUSE] Highest PS2 mouse protocol extension to
> 			probe for (bare|imps|exps).
> 
> so for builtin mouse driver (not a loadable module), use:
> 	psmouse.proto=bare|imps|exps
> 
> However, it read/sounds like the protocol is probed/detected.
> Moreover, it also sounds like MouseManPlusPS/2 isn't listed/supported.
> The known protocols according to psmouse-base.c are:
> 
> static char *psmouse_protocols[] = {
>   "None", "PS/2", "PS2++", "PS2T++", "GenPS/2", "ImPS/2", "ImExPS/2", "SynPS/2"};
> 
> I guess that you can test:  psmouse.proto=bare
> or each listed option to see what helps.
> 

As far as userspace and 2.6. goes the "only true protocol" that you should
use when getting data from /dev/input/mice or /dev/input/mouseX is
ExplorerPS/2. That's because kernel translates events from input devices
into cooked PS/2 protocol and an application can request either bare PS/2,
IMPS/2 or ExplorerPS/2 flavor regardless of what kind of device is behind
/dev/input/mice

Mouseman is not supported as far as userspace goes. If you need more than 5
buttons look for "evdev" patches for X.
 
-- 
Dmitry
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