1 /* $NetBSD: ac97var.h,v 1.9 2004/08/23 23:17:54 thorpej Exp $ */ 2 /* $OpenBSD: ac97.h,v 1.4 2000/07/19 09:01:35 csapuntz Exp $ */ 3 4 /* 5 * Copyright (c) 1999 Constantine Sapuntzakis 6 * 7 * Author: Constantine Sapuntzakis <csapuntz@stanford.edu> 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY CONSTANTINE SAPUNTZAKIS AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef _DEV_IC_AC97VAR_H_ 32 #define _DEV_IC_AC97VAR_H_ 33 34 struct ac97_codec_if; 35 36 /* 37 * This is the interface used to attach the AC97 compliant CODEC. 38 */ 39 enum ac97_host_flags { 40 AC97_HOST_DONT_READ = 0x1, 41 AC97_HOST_SWAPPED_CHANNELS = 0x2 /* l/r is reversed */ 42 }; 43 44 struct ac97_host_if { 45 void *arg; 46 47 int (*attach)(void *, struct ac97_codec_if *); 48 int (*read)(void *, u_int8_t, u_int16_t *); 49 int (*write)(void *, u_int8_t, u_int16_t); 50 void (*reset)(void *); 51 52 enum ac97_host_flags (*flags)(void *); 53 }; 54 55 /* 56 * This is the interface exported by the AC97 compliant CODEC 57 */ 58 struct ac97_codec_if_vtbl { 59 int (*mixer_get_port)(struct ac97_codec_if *, mixer_ctrl_t *); 60 int (*mixer_set_port)(struct ac97_codec_if *, mixer_ctrl_t *); 61 int (*query_devinfo)(struct ac97_codec_if *, mixer_devinfo_t *); 62 int (*get_portnum_by_name)(struct ac97_codec_if *, const char *, 63 const char *, const char *); 64 /* 65 * The AC97 codec driver records the various port settings. This 66 * function can be used to restore the port settings, e.g. after 67 * resume from a laptop suspend to disk. 68 */ 69 void (*restore_ports)(struct ac97_codec_if *); 70 71 u_int16_t (*get_extcaps)(struct ac97_codec_if *); 72 int (*set_rate)(struct ac97_codec_if *, int, u_long *); 73 void (*set_clock)(struct ac97_codec_if *, unsigned int); 74 }; 75 76 struct ac97_codec_if { 77 struct ac97_codec_if_vtbl *vtbl; 78 }; 79 80 int ac97_attach __P((struct ac97_host_if *)); 81 82 #endif /* _DEV_IC_AC97VAR_H_ */ 83