add machdep.vsyncblank sysctl for controlling whether vsync is disabled

when the monitor is blanked.

3 files changed, 15 insertions, 5 deletions

diff --git a/sys/arch/sparc/dev/cgsix.c b/sys/arch/sparc/dev/cgsix.c
index 8ace1e00fcc..a0f3194672b 100644
--- a/sys/arch/sparc/dev/cgsix.c
+++ b/sys/arch/sparc/dev/cgsix.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cgsix.c,v 1.12 1999/05/08 01:15:58 jason Exp $	*/
+/*	$OpenBSD: cgsix.c,v 1.13 2000/05/18 13:31:12 jason Exp $	*/
 /*	$NetBSD: cgsix.c,v 1.33 1997/08/07 19:12:30 pk Exp $ */
 
 /*
@@ -88,6 +88,8 @@
 #include <sparc/dev/pfourreg.h>
 #endif
 
+extern int sparc_vsyncblank;
+
 union cursor_cmap {		/* colormap, like bt_cmap, but tiny */
 	u_char	cm_map[2][3];	/* 2 R/G/B entries */
 	u_int	cm_chip[2];	/* 2 chip equivalents */
@@ -429,7 +431,8 @@ cgsixioctl(dev, cmd, data, flags, p)
 			cg6_unblank(&sc->sc_dev);
 		else if (!sc->sc_blanked) {
 			sc->sc_blanked = 1;
-			sc->sc_thc->thc_misc &= ~(THC_MISC_VIDEN|THC_MISC_SYNCEN);
+			sc->sc_thc->thc_misc &= ~(THC_MISC_VIDEN |
+			    (sparc_vsyncblank ? THC_MISC_SYNCEN : 0));
 		}
 		break;
 
diff --git a/sys/arch/sparc/include/cpu.h b/sys/arch/sparc/include/cpu.h
index 5ccf95a2502..c510fb680d1 100644
--- a/sys/arch/sparc/include/cpu.h
+++ b/sys/arch/sparc/include/cpu.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cpu.h,v 1.8 2000/02/21 21:05:58 art Exp $	*/
+/*	$OpenBSD: cpu.h,v 1.9 2000/05/18 13:31:12 jason Exp $	*/
 /*	$NetBSD: cpu.h,v 1.24 1997/03/15 22:25:15 pk Exp $ */
 
 /*
@@ -52,11 +52,13 @@
  * CTL_MACHDEP definitions.
  */
 #define CPU_LED_BLINK	1	/* int: twiddle the power LED */
-#define	CPU_MAXID	2	/* 1 valid machdep ID */
+#define CPU_VSYNCBLANK	2	/* int: turn off monitors in *blank */
+#define CPU_MAXID	3	/* 2 valid machdep IDs */
 
 #define	CTL_MACHDEP_NAMES { \
 	{ 0, 0 }, \
 	{ "led_blink", CTLTYPE_INT }, \
+	{ "vsyncblank", CTLTYPE_INT }, \
 }
 
 #ifdef _KERNEL
diff --git a/sys/arch/sparc/sparc/machdep.c b/sys/arch/sparc/sparc/machdep.c
index d063046906f..12d5111cc35 100644
--- a/sys/arch/sparc/sparc/machdep.c
+++ b/sys/arch/sparc/sparc/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.48 2000/03/23 09:59:56 art Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.49 2000/05/18 13:31:12 jason Exp $	*/
 /*	$NetBSD: machdep.c,v 1.85 1997/09/12 08:55:02 pk Exp $ */
 
 /*
@@ -141,6 +141,7 @@ int	physmem;
 
 /* sysctl settable */
 int	sparc_led_blink = 0;
+int	sparc_vsyncblank = 0;
 
 /*
  * safepri is a safe priority for sleep to set for a spin-wait
@@ -553,6 +554,10 @@ cpu_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
 		return (ENOTDIR);	/* overloaded */
 
 	switch (name[0]) {
+	case CPU_VSYNCBLANK:
+		ret = sysctl_int(oldp, oldlenp, newp, newlen,
+		    &sparc_vsyncblank);
+		return (ret);
 	case CPU_LED_BLINK:
 #if (NLED > 0) || (NAUXREG > 0) || (NSCF > 0)
 		oldval = sparc_led_blink;