Re: HID vs. Input Core

[Vojtech Pavlik <vojtech@suse.cz>]

On Tue, Jun 15, 2004 at 01:56:05PM +0000, Karel Kulhavý wrote:
> On Tue, Jun 15, 2004 at 03:41:53PM +0200, Helge Hafting wrote:
> > On Tue, Jun 15, 2004 at 12:58:00PM +0000, Karel Kulhavý wrote:
> > > Hello
> > > 
> > > I would like to know what's the difference between
> > > Input Core (CONFIG_INPUT) and USB HID (CONFIG_USB_HID) in 2.4.25
> > > 
> > > They seem to enable the same thing - USB HID. However I don't
> > > know which one should I enable or if I should enable both. I find
> > > existence of two options with seemingly the same function confusing.
> > > 
> > They aren't the same:
> > 
> > Enable CONFIG_INPUT if you want to use any input devices _at all_,
> > i.e. if you plan on using some kind of keyboard, mouse, joystick, ...
> > Enable CONFIG_USB_HID also, _if_ such a device might be connected
> > via USB.  (Older devices are not USB, newer may be usb.)
> 
> Bugreport:
> 
> CONFIG_INPUT Help says
> "Say Y here if you want to enable any of the following options for USB
> Human Interface Device (HID) support".
> 
> Helge Hafting from linux-kernel says that CONFIG_INPUT controls enabling input devices at
> all. These two statements are in a direct contradiction. (See above).
 
In 2.4 the only devices (well, except joysticks) using the input core
are USB HID devices.

-- 
Vojtech Pavlik
SuSE Labs, SuSE CR