Re: CONFIG_USB_HID vs. CONFIG_USB_HIDINPUT

From: Karel Kulhavý
Date: Tue Jun 15 2004 - 12:16:59 EST


On Tue, Jun 15, 2004 at 06:05:02PM +0200, Vojtech Pavlik wrote:
> On Tue, Jun 15, 2004 at 02:07:05PM +0000, Karel Kulhavý wrote:
> > Hello
> >
> > When I enable CONFIG_USB_HID and not enable CONFIG_USB_HIDINPUT in 2.4.25, will
> > I get something different from when I don't enable neither of them?
> >
> > The <Help> says basically the same about both: that they control
> > "keyboards, mice, joysticks, graphics tablets, or any other HID based devices"
> > (CONFIG_USB_HID)
> > "keyboard, mouse or joystick or any other HID input device"
> > (CONFIG_USB_HIDINPUT)
> >
> > I assume
> > 1) it doesn't matter if "keyboard" or "keyboards" is in the <Help>
> > 2) graphics tablets are assumed to be "any other HID input devices".
>
> In that case you get the HID driver, but you won't get the Input
> binding, so the devices will be detected, but won't be accessible by the
> common means (keyboard through console, mouse via /dev/input/mice,
> etc.). They still will be accessible via HIDDEV, if you enable that.
>
> Enabling HID without either HIDINPUT or HIDDEV is pointless.

So they are 4 meaningful combinations:
0)nothing
1)HIDDEV
2)HIDINPUT
3)HIDINPUT+HIDDEV

There are 3 tickboxes with 5 possible combinations. I suggest reducing this
count to 2 tickboxes with 4 naturally resulting combinations. I think it will
be less confusing for a user.

>
> --
> Vojtech Pavlik
> SuSE Labs, SuSE CR
> -
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