Add a very simple dpms(4) driver that uses the VESA BIOS DPMS calls to
turn off the external display during suspend and restore it to its original state on resume. MFC after: 2 weeks
This commit is contained in:
John Baldwin
parent
a2a2d95441
commit
aa7c1c059f
@ -11,6 +11,7 @@ MAN= aic.4 \
|
||||
cs.4 \
|
||||
ct.4 \
|
||||
ctau.4 \
|
||||
dpms.4 \
|
||||
cx.4 \
|
||||
ep.4 \
|
||||
ex.4 \
|
||||
|
||||
58
share/man/man4/man4.i386/dpms.4
Normal file
58
share/man/man4/man4.i386/dpms.4
Normal file
@ -0,0 +1,58 @@
|
||||
.\" Copyright (c) 2008 Yahoo!, Inc.
|
||||
.\" All rights reserved.
|
||||
.\" Written by: John Baldwin <jhb@FreeBSD.org>
|
||||
.\"
|
||||
.\" Redistribution and use in source and binary forms, with or without
|
||||
.\" modification, are permitted provided that the following conditions
|
||||
.\" are met:
|
||||
.\" 1. Redistributions of source code must retain the above copyright
|
||||
.\" notice, this list of conditions and the following disclaimer.
|
||||
.\" 2. Redistributions in binary form must reproduce the above copyright
|
||||
.\" notice, this list of conditions and the following disclaimer in the
|
||||
.\" documentation and/or other materials provided with the distribution.
|
||||
.\" 3. Neither the name of the author nor the names of any co-contributors
|
||||
.\" may be used to endorse or promote products derived from this software
|
||||
.\" without specific prior written permission.
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
.\" SUCH DAMAGE.
|
||||
.\"
|
||||
.\" $FreeBSD$
|
||||
.\"
|
||||
.Dd August 23, 2008
|
||||
.Dt DPMS 4
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm dpms
|
||||
.Nd VESA BIOS DPMS driver
|
||||
.Sh SYNOPSIS
|
||||
.Cd "device dpms"
|
||||
.Sh DESCRIPTION
|
||||
The
|
||||
.Nm
|
||||
driver uses the VESA BIOS to manage an external display during suspend and
|
||||
resume.
|
||||
When the machine suspends,
|
||||
the
|
||||
.Nm
|
||||
driver turns the external display off.
|
||||
When the machine resumes,
|
||||
it restores the display to its state when the driver was first loaded.
|
||||
.Sh SEE ALSO
|
||||
.Xr acpi_video 4
|
||||
.Sh BUGS
|
||||
.Pp
|
||||
The VESA BIOS DPMS calls do not provide any way to identify a particular
|
||||
display or adapter to manipulate.
|
||||
As a result,
|
||||
this driver may have unexpected results on systems with multiple displays
|
||||
and/or adapters.
|
||||
@ -329,6 +329,7 @@ i386/isa/atpic.c optional atpic
|
||||
#i386/isa/atpic_vector.s standard
|
||||
i386/isa/clock.c optional native
|
||||
i386/xen/clock.c optional xen
|
||||
i386/isa/dpms.c optional dpms
|
||||
i386/isa/elcr.c standard
|
||||
i386/isa/elink.c optional ep | ie
|
||||
i386/isa/isa.c optional isa
|
||||
|
||||
@ -357,6 +357,8 @@ options VESA
|
||||
# Turn on extra debugging checks and output for VESA support.
|
||||
options VESA_DEBUG
|
||||
|
||||
device dpms # DPMS suspend & resume via VESA BIOS
|
||||
|
||||
#
|
||||
# The Numeric Processing eXtension driver. This is non-optional.
|
||||
device npx
|
||||
|
||||
230
sys/i386/isa/dpms.c
Normal file
230
sys/i386/isa/dpms.c
Normal file
@ -0,0 +1,230 @@
|
||||
/*-
|
||||
* Copyright (c) 2008 Yahoo!, Inc.
|
||||
* All rights reserved.
|
||||
* Written by: John Baldwin <jhb@FreeBSD.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the author nor the names of any co-contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 2004 Benjamin Close <Benjamin.Close@clearchain.com>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Support for managing the display via DPMS for suspend/resume.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/bus.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/libkern.h>
|
||||
#include <sys/module.h>
|
||||
|
||||
#include <machine/vm86.h>
|
||||
|
||||
/*
|
||||
* VESA DPMS States
|
||||
*/
|
||||
#define DPMS_ON 0x00
|
||||
#define DPMS_STANDBY 0x01
|
||||
#define DPMS_SUSPEND 0x02
|
||||
#define DPMS_OFF 0x04
|
||||
#define DPMS_REDUCEDON 0x08
|
||||
|
||||
#define VBE_DPMS_FUNCTION 0x4F10
|
||||
#define VBE_DPMS_GET_SUPPORTED_STATES 0x00
|
||||
#define VBE_DPMS_GET_STATE 0x02
|
||||
#define VBE_DPMS_SET_STATE 0x01
|
||||
#define VBE_MAJORVERSION_MASK 0x0F
|
||||
#define VBE_MINORVERSION_MASK 0xF0
|
||||
|
||||
struct dpms_softc {
|
||||
int dpms_supported_states;
|
||||
int dpms_initial_state;
|
||||
};
|
||||
|
||||
static int dpms_attach(device_t);
|
||||
static int dpms_detach(device_t);
|
||||
static int dpms_get_supported_states(int *);
|
||||
static int dpms_get_current_state(int *);
|
||||
static void dpms_identify(driver_t *, device_t);
|
||||
static int dpms_probe(device_t);
|
||||
static int dpms_resume(device_t);
|
||||
static int dpms_set_state(int);
|
||||
static int dpms_suspend(device_t);
|
||||
|
||||
static device_method_t dpms_methods[] = {
|
||||
DEVMETHOD(device_identify, dpms_identify),
|
||||
DEVMETHOD(device_probe, dpms_probe),
|
||||
DEVMETHOD(device_attach, dpms_attach),
|
||||
DEVMETHOD(device_detach, dpms_detach),
|
||||
DEVMETHOD(device_suspend, dpms_suspend),
|
||||
DEVMETHOD(device_resume, dpms_resume),
|
||||
{ 0, 0 }
|
||||
};
|
||||
|
||||
static driver_t dpms_driver = {
|
||||
"dpms",
|
||||
dpms_methods,
|
||||
sizeof(struct dpms_softc),
|
||||
};
|
||||
|
||||
static devclass_t dpms_devclass;
|
||||
|
||||
DRIVER_MODULE(dpms, vgapci, dpms_driver, dpms_devclass, NULL, NULL);
|
||||
|
||||
static void
|
||||
dpms_identify(driver_t *driver, device_t parent)
|
||||
{
|
||||
|
||||
/*
|
||||
* XXX: The DPMS VBE only allows for manipulating a single
|
||||
* monitor, but we don't know which one. Just attach to the
|
||||
* first vgapci(4) device we encounter and hope it is the
|
||||
* right one.
|
||||
*/
|
||||
if (devclass_get_device(dpms_devclass, 0) == NULL)
|
||||
device_add_child(parent, "dpms", 0);
|
||||
}
|
||||
|
||||
static int
|
||||
dpms_probe(device_t dev)
|
||||
{
|
||||
int error, states;
|
||||
|
||||
error = dpms_get_supported_states(&states);
|
||||
if (error)
|
||||
return (error);
|
||||
device_set_desc(dev, "DPMS suspend/resume");
|
||||
device_quiet(dev);
|
||||
return (BUS_PROBE_DEFAULT);
|
||||
}
|
||||
|
||||
static int
|
||||
dpms_attach(device_t dev)
|
||||
{
|
||||
struct dpms_softc *sc;
|
||||
int error;
|
||||
|
||||
sc = device_get_softc(dev);
|
||||
error = dpms_get_supported_states(&sc->dpms_supported_states);
|
||||
if (error)
|
||||
return (error);
|
||||
error = dpms_get_current_state(&sc->dpms_initial_state);
|
||||
return (error);
|
||||
}
|
||||
|
||||
static int
|
||||
dpms_detach(device_t dev)
|
||||
{
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
dpms_suspend(device_t dev)
|
||||
{
|
||||
|
||||
dpms_set_state(DPMS_OFF);
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
dpms_resume(device_t dev)
|
||||
{
|
||||
struct dpms_softc *sc;
|
||||
|
||||
sc = device_get_softc(dev);
|
||||
dpms_set_state(sc->dpms_initial_state);
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
dpms_call_bios(int subfunction, int *bh)
|
||||
{
|
||||
struct vm86frame vmf;
|
||||
int error;
|
||||
|
||||
bzero(&vmf, sizeof(vmf));
|
||||
vmf.vmf_ax = VBE_DPMS_FUNCTION;
|
||||
vmf.vmf_bl = subfunction;
|
||||
vmf.vmf_bh = *bh;
|
||||
vmf.vmf_es = 0;
|
||||
vmf.vmf_di = 0;
|
||||
error = vm86_intcall(0x10, &vmf);
|
||||
if (error == 0 && (vmf.vmf_eax & 0xffff) != 0x004f)
|
||||
error = ENXIO;
|
||||
if (error == 0)
|
||||
*bh = vmf.vmf_bh;
|
||||
return (error);
|
||||
}
|
||||
|
||||
static int
|
||||
dpms_get_supported_states(int *states)
|
||||
{
|
||||
|
||||
*states = 0;
|
||||
return (dpms_call_bios(VBE_DPMS_GET_SUPPORTED_STATES, states));
|
||||
}
|
||||
|
||||
static int
|
||||
dpms_get_current_state(int *state)
|
||||
{
|
||||
|
||||
*state = 0;
|
||||
return (dpms_call_bios(VBE_DPMS_GET_STATE, state));
|
||||
}
|
||||
|
||||
static int
|
||||
dpms_set_state(int state)
|
||||
{
|
||||
|
||||
return (dpms_call_bios(VBE_DPMS_SET_STATE, &state));
|
||||
}
|
||||
@ -72,6 +72,7 @@ SUBDIR= ${_3dfx} \
|
||||
dcons \
|
||||
dcons_crom \
|
||||
de \
|
||||
${_dpms} \
|
||||
${_dpt} \
|
||||
${_drm} \
|
||||
${_dtrace} \
|
||||
@ -377,6 +378,7 @@ _cs= cs
|
||||
.if ${MK_CDDL} != "no" || defined(ALL_MODULES)
|
||||
_cyclic= cyclic
|
||||
.endif
|
||||
_dpms= dpms
|
||||
_drm= drm
|
||||
.if ${MK_CDDL} != "no" || defined(ALL_MODULES)
|
||||
_dtrace= dtrace
|
||||
|
||||
9
sys/modules/dpms/Makefile
Normal file
9
sys/modules/dpms/Makefile
Normal file
@ -0,0 +1,9 @@
|
||||
# $FreeBSD$
|
||||
|
||||
.PATH: ${.CURDIR}/../../i386/isa
|
||||
|
||||
KMOD= dpms
|
||||
SRCS= dpms.c
|
||||
SRCS+= bus_if.h device_if.h
|
||||
|
||||
.include <bsd.kmod.mk>
|
||||
Loading…
Reference in New Issue
Block a user