Reenable the AUXWRITE dance to try and find the aux port in pckbc(4), based

on an attachment dependent flag; the Tadople SPARCLE needs it.
ok kettenis@ deraadt@

2 files changed, 22 insertions, 18 deletions

diff --git a/sys/dev/ic/pckbc.c b/sys/dev/ic/pckbc.c
index 5a759389e0d..ce6df5bd1ac 100644
--- a/sys/dev/ic/pckbc.c
+++ b/sys/dev/ic/pckbc.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: pckbc.c,v 1.16 2008/07/16 20:03:22 miod Exp $ */
+/* $OpenBSD: pckbc.c,v 1.17 2008/07/29 04:20:37 miod Exp $ */
 /* $NetBSD: pckbc.c,v 1.5 2000/06/09 04:58:35 soda Exp $ */
 
 /*
@@ -359,25 +359,28 @@ pckbc_attach(sc)
 	}
 	bus_space_write_1(iot, ioh_d, 0, 0x5a);	/* a random value */
 	res = pckbc_poll_data1(iot, ioh_d, ioh_c, PCKBC_AUX_SLOT, 1);
-#if 0
-	/*
-	 * The following code is necessary to find the aux port on the
-	 * oqo-1 machine.  However if confuses old (non-ps/2) keyboard
-	 * controllers.
-	 */
-	if (res == -1) {
-		/* Read of aux echo timed out, try again */
-		if (!pckbc_send_cmd(iot, ioh_c, KBC_AUXWRITE))
-			goto nomouse;
-		if (!pckbc_wait_output(iot, ioh_c))
-			goto nomouse;
-		bus_space_write_1(iot, ioh_d, 0, 0x5a);
-		res = pckbc_poll_data1(iot, ioh_d, ioh_c, PCKBC_AUX_SLOT, 1);
+
+	if (ISSET(t->t_flags, PCKBC_NEED_AUXWRITE)) {
+		/*
+		 * The following code is necessary to find the aux port on the
+		 * oqo-1 machine, among others.  However if confuses old
+		 * (non-ps/2) keyboard controllers (at least UMC880x again).
+		 */
+		if (res == -1) {
+			/* Read of aux echo timed out, try again */
+			if (!pckbc_send_cmd(iot, ioh_c, KBC_AUXWRITE))
+				goto nomouse;
+			if (!pckbc_wait_output(iot, ioh_c))
+				goto nomouse;
+			bus_space_write_1(iot, ioh_d, 0, 0x5a);
+			res = pckbc_poll_data1(iot, ioh_d, ioh_c,
+			    PCKBC_AUX_SLOT, 1);
 #ifdef PCKBCDEBUG
-		printf("kbc: aux echo: %x\n", res);
+			printf("kbc: aux echo: %x\n", res);
 #endif
+		}
 	}
-#endif
+
 	if (res != -1) {
 		/*
 		 * In most cases, the 0x5a gets echoed.
diff --git a/sys/dev/ic/pckbcvar.h b/sys/dev/ic/pckbcvar.h
index 75337423671..947f542ce3d 100644
--- a/sys/dev/ic/pckbcvar.h
+++ b/sys/dev/ic/pckbcvar.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: pckbcvar.h,v 1.6 2008/07/16 20:03:22 miod Exp $ */
+/* $OpenBSD: pckbcvar.h,v 1.7 2008/07/29 04:20:37 miod Exp $ */
 /* $NetBSD: pckbcvar.h,v 1.4 2000/06/09 04:58:35 soda Exp $ */
 
 /*
@@ -53,6 +53,7 @@ struct pckbc_internal {
 
 	int t_flags;
 #define	PCKBC_CANT_TRANSLATE	0x0001	/* can't translate to XT scancodes */
+#define	PCKBC_NEED_AUXWRITE	0x0002	/* need auxwrite command to find aux */
 	int t_haveaux; /* controller has an aux port */
 
 	struct pckbc_slotdata *t_slotdata[PCKBC_NSLOTS];