freebsd-nq/sys/dev/backlight/backlight_if.m
Emmanuel Vadot 675aae732d Add backlight subsystem
This is a simple subsystem that allow drivers to register as a backlight.
Each backlight creates a device node under /dev/backlight/backlightX and
an alias based on the name provided.

Relnotes:	yes
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D26250
2020-10-02 18:18:01 +00:00

67 lines
2.1 KiB
Objective-C

#-
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
#
# Copyright (c) 2020 Emmanuel Vadot <manu@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.
#
# 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.
#
# $FreeBSD$
#include <dev/backlight/backlight.h>
INTERFACE backlight;
CODE {
static int
backlight_default_update_status(device_t dev, struct backlight_props *props)
{
return (EOPNOTSUPP);
}
static int
backlight_default_get_status(device_t dev, struct backlight_props *props)
{
return (EOPNOTSUPP);
}
static int
backlight_default_get_info(device_t dev, struct backlight_info *info)
{
return (EOPNOTSUPP);
}
};
METHOD int update_status {
device_t dev;
struct backlight_props *props;
} DEFAULT backlight_default_update_status;
METHOD int get_status {
device_t dev;
struct backlight_props *props;
} DEFAULT backlight_default_get_status;
METHOD int get_info {
device_t dev;
struct backlight_info *info;
} DEFAULT backlight_default_get_info;