75 lines
2.8 KiB
C
75 lines
2.8 KiB
C
/* $NetBSD: ac97var.h,v 1.4 2001/05/07 08:15:41 lukem Exp $ */
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/* $OpenBSD: ac97.h,v 1.4 2000/07/19 09:01:35 csapuntz Exp $ */
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/*
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* Copyright (c) 1999 Constantine Sapuntzakis
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*
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* Author: Constantine Sapuntzakis <csapuntz@stanford.edu>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY CONSTANTINE SAPUNTZAKIS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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struct ac97_codec_if;
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/*
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* This is the interface used to attach the AC97 compliant CODEC.
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*/
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struct ac97_host_if {
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void *arg;
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int (*attach)(void *arg, struct ac97_codec_if *codecif);
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int (*read)(void *arg, u_int8_t reg, u_int16_t *val);
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int (*write)(void *arg, u_int8_t reg, u_int16_t val);
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void (*reset)(void *arg);
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enum ac97_host_flags {
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AC97_HOST_DONT_READ = 0x1,
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AC97_HOST_SWAPPED_CHANNELS = 0x2 /* l/r is reversed */
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};
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enum ac97_host_flags (*flags)(void *arg);
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};
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/*
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* This is the interface exported by the AC97 compliant CODEC
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*/
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struct ac97_codec_if_vtbl {
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int (*mixer_get_port)(struct ac97_codec_if *addr, mixer_ctrl_t *cp);
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int (*mixer_set_port)(struct ac97_codec_if *addr, mixer_ctrl_t *cp);
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int (*query_devinfo)(struct ac97_codec_if *addr, mixer_devinfo_t *cp);
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int (*get_portnum_by_name)(struct ac97_codec_if *addr,
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char *class, char *device,
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char *qualifier);
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/*
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* The AC97 codec driver records the various port settings. This
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* function can be used to restore the port settings, e.g. after
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* resume from a laptop suspend to disk.
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*/
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void (*restore_ports)(struct ac97_codec_if *addr);
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};
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struct ac97_codec_if {
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struct ac97_codec_if_vtbl *vtbl;
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};
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int ac97_attach __P((struct ac97_host_if *));
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