94 lines
3.4 KiB
C
94 lines
3.4 KiB
C
/* $NetBSD: ac97var.h,v 1.13 2004/12/22 00:54:55 reinoud 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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#ifndef _DEV_IC_AC97VAR_H_
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#define _DEV_IC_AC97VAR_H_
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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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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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struct ac97_host_if {
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void *arg;
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int (*attach)(void *, struct ac97_codec_if *);
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int (*read)(void *, u_int8_t, u_int16_t *);
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int (*write)(void *, u_int8_t, u_int16_t);
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int (*reset)(void *);
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enum ac97_host_flags (*flags)(void *);
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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 *, mixer_ctrl_t *);
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int (*mixer_set_port)(struct ac97_codec_if *, mixer_ctrl_t *);
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int (*query_devinfo)(struct ac97_codec_if *, mixer_devinfo_t *);
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int (*get_portnum_by_name)(struct ac97_codec_if *, const char *,
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const char *, const char *);
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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 *);
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u_int16_t (*get_extcaps)(struct ac97_codec_if *);
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int (*set_rate)(struct ac97_codec_if *, int, u_long *);
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void (*set_clock)(struct ac97_codec_if *, unsigned int);
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void (*detach)(struct ac97_codec_if *);
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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(struct ac97_host_if *);
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#define AC97_IS_FIXED_RATE(codec) \
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!((codec)->vtbl->get_extcaps(codec) & AC97_EXT_AUDIO_VRA)
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#define AC97_IS_4CH(codec) \
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((codec)->vtbl->get_extcaps(codec) & AC97_EXT_AUDIO_SDAC)
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#define AC97_IS_6CH(codec) \
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(((codec)->vtbl->get_extcaps(codec) \
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& (AC97_EXT_AUDIO_SDAC | AC97_EXT_AUDIO_CDAC | AC97_EXT_AUDIO_LDAC)) \
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== (AC97_EXT_AUDIO_SDAC | AC97_EXT_AUDIO_CDAC | AC97_EXT_AUDIO_LDAC))
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#define AC97_HAS_SPDIF(codec) \
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((codec)->vtbl->get_extcaps(codec) & AC97_EXT_AUDIO_SPDIF)
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#endif /* _DEV_IC_AC97VAR_H_ */
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