0f55ac6c1a
this gives us several benefits, including: * easier extensibility- new optional methods can be added to ac97/mixer/channel classes without having to fixup every driver. * forward compatibility for drivers, provided no new mandatory methods are added.
61 lines
1.7 KiB
Objective-C
61 lines
1.7 KiB
Objective-C
#
|
|
# Copyright (c) 2000 Cameron Grant <cg@freebsd.org>
|
|
# 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.
|
|
#
|
|
# $FreeBSD$
|
|
#
|
|
|
|
#include <dev/sound/pcm/sound.h>
|
|
|
|
INTERFACE ac97;
|
|
|
|
CODE {
|
|
|
|
static u_int32_t
|
|
ac97_noinit(kobj_t obj, void *devinfo)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
};
|
|
|
|
METHOD u_int32_t init {
|
|
kobj_t obj;
|
|
void *devinfo;
|
|
} DEFAULT ac97_noinit;
|
|
|
|
METHOD int read {
|
|
kobj_t obj;
|
|
void *devinfo;
|
|
int regno;
|
|
};
|
|
|
|
METHOD int write {
|
|
kobj_t obj;
|
|
void *devinfo;
|
|
int regno;
|
|
u_int32_t data;
|
|
};
|
|
|