itojun@iijlab.net writes:

> >The hardware generates one event for each cycle of the LOCK key (press +
> >release => down; press + release => up).  It's the ADB code that converts
> >each of the down and up events into a pair of press/release events (so
> >that console drivers and X servers don't get totally confused).  The
> >problem remains though: the nearest you can get to mapping CTRL onto LOCK
> >is a CTRL key that locks (just like the LOCK behaviour).  Not very useful.
> >
> >Sorry for the (my) confusion.
> 
> 	thanks for explanation, i've put it into port-macppc FAQ.
> 	guess i need a soldering iron...

Actually, I abused the akbd code into not being a locking CTRL key,
but being a CTRL key that still lights up (and occasionlly
locks.. some multi-keypress bug, I think).

Index: akbd.c
===================================================================
RCS file: /cvsroot/syssrc/sys/arch/macppc/dev/akbd.c,v
retrieving revision 1.23
diff -c -r1.23 akbd.c
*** akbd.c	2002/03/17 19:40:44	1.23
--- akbd.c	2002/06/14 17:11:16
***************
*** 498,521 ****
--- 498,549 ----
  	}
  }
  
+ #define FIXCAPS
+ 
  int
  kbd_intr(arg)
  	void *arg;
  {
  	adb_event_t *event = arg;
  	int key;
+ #ifdef FIXCAPS
+ 	static int shift;
+ #endif
  
  	struct akbd_softc *sc = akbd_cd.cd_devs[0];
  
  	key = event->u.k.key;
+ #ifdef FIXCAPS
+ 	/* Caps lock is weird. The key sequence generated is:
+ 	 * press:   down(57) [57]  (LED turns on)
+ 	 * release: up(127)  [255]
+ 	 * press:   up(127)  [255]
+ 	 * release: up(57)   [185] (LED turns off)
+ 	 */
+ 	if ((key == 57) || (key == 185))
+ 		shift = 0;
+ 	
+ 	if (key == 255) {
+ 		if (shift == 0) {
+ 			key = 185;
+ 			shift = 1;
+ 		} else {
+ 			key = 57;
+ 			shift = 0;
+ 		}
+ 	}
+ 
+ #endif
  
  	switch (key) {
+ #ifndef FIXCAPS
  	case 57:	/* Caps Lock pressed */
  	case 185:	/* Caps Lock released */
  		key = ADBK_KEYDOWN(ADBK_KEYVAL(key));
  		kbd_passup(sc,key);
  		key = ADBK_KEYUP(ADBK_KEYVAL(key));
  		break;
+ #endif
  	case 245:
  		if (pcmcia_soft_eject)
  			pm_eject_pcmcia(0);