On Sat, Jan 14, 2006 at 02:46:30PM -0800, Brian A. Stumm wrote:
> On Sat, 14 Jan 2006, Vojtech Pavlik wrote:
>
> > > What else might happen in different order for windows vs linux? Tried
> > > both
> > > of these suggestions but to no avail. Also, is usbmouse.c affected by
> > > these tests? I was assuming no and using the usbhid driver.
> >
> > usbmouse.c tries not to talk to the device more than necessary exactly
> > to work in all conditions, so it doesn't set the idle time not ask for
> > the descriptor, assuming boot protocol layout. If usbmouse.c doesn't
> > work, something is wrong in the usb core and/or hcd parts, or the mouse
> > requires these calls to work, which would be hard to believe.
>
> I've mentioned this before with noone commenting specifically but I need
> to ask again. This device has 2 interfaces reporting their class, sub,
> proto as 3, 1, 1 (keyboard) and 3, 0, 0 (mouse). usbhid detects the mouse
> as a pointer but in order for usbmouse.c to detect it I had to hack the
> following and I wonder if usbmouse.c might still be broken due to the
> mis-report of the mouse interface? With this hack a regular usb mouse
> still works and the touchpad in the keyboard gets assigned the usbmouse
> driver.
This just means the mouse doesn't support the HID Boot Protocol. As
such, it insists on a full HID driver (usbhid) instead of just a simple
one (usbmouse).
Since only few BIOSes support mice, it's quite common for mouse
manufacturers to ignore the Boot Protocol for mice.
> static struct usb_device_id usb_mouse_id_table [] = {
> { USB_INTERFACE_INFO(3, 0, 0) },
> { USB_INTERFACE_INFO(3, 1, 2) },
> { } /* Terminating entry */
> };
--
Vojtech Pavlik
SuSE Labs, SuSE CR
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