On Fri, Apr 08, 2005 at 03:21:39PM -0700, Vernon Mauery wrote: > Vernon Mauery wrote: > > I was wondering if anyone knows how to change the repeatrate on a > > USB keyboard with a 2.4 kernel. The system is a legacy free system > > (no ps2 port), so kbdrate does nothing. With evdev loaded, the > > keyboard and mouse (both USB devices) get registered with the event > > system and show up as /dev/input/event[01]. I know the event > > subsystem does software key repeating and was wondering how to > > change that.
A recent version of kbdrate on a 2.6 kernel should use the 'KDKBDREP' ioctl(), which should set the repeat rate on all keyboards attached to the system (both on PS/2 and USB devices, and any others). It achieves this by sending EV_REP events to all attached keyboard-type devices. > > I poked around and found the EVIOCGREP and EVIOCSREP ioctls, but > > when I tried using them, the ioctl returned invalid parameter. Upon > > further investigation, I found that the ioctl definitions (located > > in the linux/input.h header file) are not used in kernel land. That > > would explain why it failed, but that just means I ran into a dead > > end. Were those definitions legacy code from 2.2 or is it something > > that never got implemented, only defined? I also noticed that the > > defines are gone in 2.6. So how _does_ one go about changing the > > repeat rate on a keyboard input device in 2.4? I don't think it's possible with USB keyboards on 2.4, the keybdev module doesn't support repeat rate setting. > Just in case anyone cares, I spent some more time poking around in the > event code and it looks like the way to do this seems to be exposed by > the evdev module. If you write to /dev/input/eventX an input_event > that contains an event of type EV_REP with either REP_DELAY or > REP_PERIOD as the code and a value in milliseconds, I think it is > supposed to set up the software auto repeat for you. But with the > atkbd driver, you have to turn off hardware auto repeat for this to > take effect. By sending the events, the driver is asked to change the delay/repeat rate. It should work in the software autorepeat and in the hardware autorepeat cases. -- Vojtech Pavlik SuSE Labs, SuSE CR - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
