@@ -1,4 +1,4 @@
-.\" $NetBSD: acpivga.4,v 1.2 2010/10/28 14:36:04 jruoho Exp $
+.\" $NetBSD: acpivga.4,v 1.3 2010/10/28 21:45:02 gsutre Exp $
.\"
.\" Copyright (c) 2010 The NetBSD Foundation, Inc.
.\" All rights reserved.
@@ -47,22 +47,29 @@
.Tn ACPI
BIOS.
.Pp
-The driver handles brightness hotkeys and output switch hotkeys.
+The driver handles brightness hotkeys and display switch hotkeys.
In addition, the following
.Xr sysctl 8
read/write variables are provided (when hardware support is available):
.Bl -tag -width Ds
-.It Va hw.acpi.acpivga0.policy
-BIOS switch policy.
-Accepted values range from 0 to 7.
-For more information, refer to the documentation of the _DOS method,
-in Section B.4.1 of the
-.Tn ACPI
-specification (revision 4.0a).
+.It Va hw.acpi.acpivga0.bios_switch
+BIOS output switching policy.
+This boolean variable controls the behavior of the BIOS when a display
+switch hotkey is pressed.
+.Bl -tag -width xxx -compact
+.It Sy 1
+the BIOS should automatically switch outputs, with no interaction from
+.Nm .
+.It Sy 0
+the BIOS should only notify
+.Nm
+of the desired output state changes.
+.El
.It Va hw.acpi.acpiout0.brightness
Brightness level.
-Typical values range from 0 to 100, but any integer value is accepted (the
-driver uses the closest brightness level supported by the device).
+This integer variable typically ranges from 0 to 100, but any integer value
+is accepted (the driver uses the closest brightness level supported by the
+device).
.El
.Pp
Please note, however, that future versions of
@@ -99,7 +106,17 @@
BIOSes implement only part of the
.Tn ACPI
video extensions.
-In particular, display output switching often does not work.
+In particular, display output switching via these extensions often does not
+work.
+For this reason,
+.Nm
+enables
+.Va hw.acpi.acpivga0.bios_switch
+by default.
+If the display switch hotkey does not work with this default setting, try
+setting
+.Va hw.acpi.acpivga0.bios_switch
+to 0.
.Pp
Brightness level should be controlled via
.Xr wsconsctl 8
@@ -1,4 +1,4 @@
-/* $NetBSD: acpi_display.c,v 1.3 2010/10/26 22:27:44 gsutre Exp $ */
+/* $NetBSD: acpi_display.c,v 1.4 2010/10/28 21:45:02 gsutre Exp $ */
/*-
* Copyright (c) 2010 The NetBSD Foundation, Inc.
@@ -66,7 +66,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpi_display.c,v 1.3 2010/10/26 22:27:44 gsutre Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpi_display.c,v 1.4 2010/10/28 21:45:02 gsutre Exp $");
#include <sys/param.h>
#include <sys/device.h>
@@ -347,7 +347,10 @@
static void acpidisp_vga_sysctl_setup(struct acpidisp_vga_softc *);
static void acpidisp_out_sysctl_setup(struct acpidisp_out_softc *);
+#ifdef ACPI_DEBUG
static int acpidisp_vga_sysctl_policy(SYSCTLFN_PROTO);
+#endif
+static int acpidisp_vga_sysctl_policy_output(SYSCTLFN_PROTO);
#ifdef ACPI_DISP_SWITCH_SYSCTLS
static int acpidisp_out_sysctl_status(SYSCTLFN_PROTO);
static int acpidisp_out_sysctl_state(SYSCTLFN_PROTO);
@@ -1114,11 +1117,19 @@
CTL_CREATE, CTL_EOL)) != 0)
goto fail;
+#ifdef ACPI_DEBUG
(void)sysctl_createv(&asc->sc_log, 0, &rnode, NULL,
- CTLFLAG_READWRITE | CTLFLAG_HEX, CTLTYPE_INT, "policy",
- SYSCTL_DESCR("Current BIOS switch policy"),
+ CTLFLAG_READWRITE | CTLFLAG_HEX, CTLTYPE_INT, "bios_policy",
+ SYSCTL_DESCR("Current BIOS switch policies (debug)"),
acpidisp_vga_sysctl_policy, 0, asc, 0,
CTL_CREATE, CTL_EOL);
+#endif
+
+ (void)sysctl_createv(&asc->sc_log, 0, &rnode, NULL,
+ CTLFLAG_READWRITE, CTLTYPE_BOOL, "bios_switch",
+ SYSCTL_DESCR("Current BIOS output switching policy"),
+ acpidisp_vga_sysctl_policy_output, 0, asc, 0,
+ CTL_CREATE, CTL_EOL);
}
return;
@@ -1202,6 +1213,7 @@
* Sysctl callbacks.
*/
+#ifdef ACPI_DEBUG
static int
acpidisp_vga_sysctl_policy(SYSCTLFN_ARGS)
{
@@ -1227,6 +1239,38 @@
mutex_enter(&asc->sc_mtx);
asc->sc_policy.raw = (uint8_t)val;
+ error = acpidisp_set_policy(asc, asc->sc_policy.raw);
+ mutex_exit(&asc->sc_mtx);
+
+ return error;
+}
+#endif
+
+static int
+acpidisp_vga_sysctl_policy_output(SYSCTLFN_ARGS)
+{
+ struct sysctlnode node;
+ struct acpidisp_vga_softc *asc;
+ bool val;
+ int error;
+
+ node = *rnode;
+ asc = (struct acpidisp_vga_softc *)node.sysctl_data;
+
+ mutex_enter(&asc->sc_mtx);
+ val = (asc->sc_policy.fmt.output == ACPI_DISP_POLICY_OUTPUT_AUTO);
+ mutex_exit(&asc->sc_mtx);
+
+ node.sysctl_data = &val;
+ error = sysctl_lookup(SYSCTLFN_CALL(&node));
+ if (error || newp == NULL)
+ return error;
+
+ mutex_enter(&asc->sc_mtx);
+ if (val)
+ asc->sc_policy.fmt.output = ACPI_DISP_POLICY_OUTPUT_AUTO;
+ else
+ asc->sc_policy.fmt.output = ACPI_DISP_POLICY_OUTPUT_NORMAL;
error = acpidisp_set_policy(asc, asc->sc_policy.raw);
mutex_exit(&asc->sc_mtx);