Messages in this thread | ![/](/images/icornerl.gif) | | Date | Wed, 8 Jan 2003 09:45:21 +0100 | From | Vojtech Pavlik <> | Subject | Re: Fwd: Patch for initial CapsLock |
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On Tue, Jan 07, 2003 at 05:07:46PM -0500, Pete Zaitcev wrote: > > > Do you want me to do the same for 2.5? It should be a little > > > simpler there, and no new exports. > > > > Yes, please. > > Done, works for me. > > I toyed with the idea to trigger keyboard tasklet instead of > locking it out and calling methods, but I did not see how > to force updates for unchanged ledstate. Changing ledstate to 0xff > just looked so very wrong...
Thanks, this looks very good.
> > -- Pete > > --- linux-2.5.54/drivers/char/keyboard.c 2002-12-15 18:07:54.000000000 -0800 > +++ linux-2.5.54-p3/drivers/char/keyboard.c 2003-01-07 13:55:25.000000000 -0800 > @@ -894,9 +894,9 @@ > * Aside from timing (which isn't really that important for > * keyboard interrupts as they happen often), using the software > * interrupt routines for this thing allows us to easily mask > - * this when we don't want any of the above to happen. Not yet > - * used, but this allows for easy and efficient race-condition > - * prevention later on. > + * this when we don't want any of the above to happen. > + * This allows for easy and efficient race-condition prevention > + * for kbd_refresh_leds => input_event(dev, EV_LED, ...) => ... > */ > > static void kbd_bh(unsigned long dummy) > @@ -918,6 +918,22 @@ > > DECLARE_TASKLET_DISABLED(keyboard_tasklet, kbd_bh, 0); > > +/* > + * This allows a newly plugged keyboard to pick the LED state. > + */ > +void kbd_refresh_leds(struct input_handle *handle) > +{ > + unsigned char leds = ledstate; > + > + tasklet_disable(&keyboard_tasklet); > + if (leds != 0xff) { > + input_event(handle->dev, EV_LED, LED_SCROLLL, !!(leds & 0x01)); > + input_event(handle->dev, EV_LED, LED_NUML, !!(leds & 0x02)); > + input_event(handle->dev, EV_LED, LED_CAPSL, !!(leds & 0x04)); > + } > + tasklet_enable(&keyboard_tasklet); > +} > + > #if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC32) || defined(CONFIG_SPARC64) > > static unsigned short x86_keycodes[256] = > @@ -1159,6 +1175,7 @@ > handle->name = kbd_name; > > input_open_device(handle); > + kbd_refresh_leds(handle); > > return handle; > }
-- Vojtech Pavlik SuSE Labs - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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