1 /* $NetBSD: ac97var.h,v 1.7 2002/10/14 08:48:15 kent 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 struct ac97_codec_if; 32 33 /* 34 * This is the interface used to attach the AC97 compliant CODEC. 35 */ 36 enum ac97_host_flags { 37 AC97_HOST_DONT_READ = 0x1, 38 AC97_HOST_SWAPPED_CHANNELS = 0x2 /* l/r is reversed */ 39 }; 40 41 struct ac97_host_if { 42 void *arg; 43 44 int (*attach)(void *arg, struct ac97_codec_if *codecif); 45 int (*read)(void *arg, u_int8_t reg, u_int16_t *val); 46 int (*write)(void *arg, u_int8_t reg, u_int16_t val); 47 void (*reset)(void *arg); 48 49 enum ac97_host_flags (*flags)(void *arg); 50 }; 51 52 /* 53 * This is the interface exported by the AC97 compliant CODEC 54 */ 55 struct ac97_codec_if_vtbl { 56 int (*mixer_get_port)(struct ac97_codec_if *addr, mixer_ctrl_t *cp); 57 int (*mixer_set_port)(struct ac97_codec_if *addr, mixer_ctrl_t *cp); 58 int (*query_devinfo)(struct ac97_codec_if *addr, mixer_devinfo_t *cp); 59 int (*get_portnum_by_name)(struct ac97_codec_if *addr, 60 const char *class, const char *device, 61 const char *qualifier); 62 /* 63 * The AC97 codec driver records the various port settings. This 64 * function can be used to restore the port settings, e.g. after 65 * resume from a laptop suspend to disk. 66 */ 67 void (*restore_ports)(struct ac97_codec_if *addr); 68 69 u_int16_t (*get_extcaps)(struct ac97_codec_if *codec_if); 70 int (*set_rate)(struct ac97_codec_if *codec_if, 71 int target, u_long *rate); 72 void (*set_clock)(struct ac97_codec_if *codec_if, unsigned int clock); 73 }; 74 75 struct ac97_codec_if { 76 struct ac97_codec_if_vtbl *vtbl; 77 }; 78 79 int ac97_attach __P((struct ac97_host_if *)); 80