sys/dev/ic/tms320av110var.h

   1 /*      $NetBSD: tms320av110var.h,v 1.9 2007/10/19 12:00:03 ad Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Ignatios Souvatzis.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Machine independent definitions, declarations and data structures for
  34  * access to the TMS320AV110 data sheet.
  35  *
  36  * Currently, only minimum support for audio output. For audio/video
  37  * synchronization, more is needed.
  38  */
  39
  40 #ifndef _TMS320AV110_VAR_H_
  41 #define _TMS320AV110_VAR_H_
  42
  43 #include <sys/bus.h>
  44
  45 /* softc */
  46
  47 struct tav_softc {
  48         struct device   sc_dev;
  49
  50         bus_space_tag_t sc_iot;
  51         bus_space_handle_t sc_ioh;
  52
  53         /* above audio callback function */
  54         void            (*sc_intr)(void *);
  55         void            *sc_intrarg;
  56         int             sc_bsize;
  57
  58         /* below audio interrupt acknowledge function. Ignored if NULL */
  59         void            (*sc_intack)(struct tav_softc *);
  60
  61         /* initialization from below */
  62
  63         uint8_t         sc_pcm_div;     /* passed in */
  64         uint8_t         sc_pcm_ord;     /* passed in */
  65         uint8_t         sc_pcm_18;      /* passed in */
  66         uint8_t         sc_dif; /* passed in */
  67 };
  68
  69 /* prototypes */
  70
  71 void tms320av110_attach_mi(struct tav_softc *);
  72 int tms320av110_intr(void *);
  73
  74 static void tav_write_short(bus_space_tag_t, bus_space_handle_t,
  75     bus_size_t, uint16_t);
  76
  77 /* access functions/macros: */
  78 /* XXX shouldn't these be in the reg.h file? */
  79
  80 #define tav_read_byte(ioh, iot, off) bus_space_read_1(ioh, iot, off)
  81
  82 #define tav_read_short(ioh, iot, off)   (               \
  83         bus_space_read_1((ioh), (iot), (off))   |       \
  84         bus_space_read_1((ioh), (iot), (off)+1) << 8)
  85
  86 #define tav_read_long(ioh, iot, off)    (               \
  87         bus_space_read_1((ioh), (iot), (off))   |       \
  88         bus_space_read_1((ioh), (iot), (off)+1) << 8 |  \
  89         bus_space_read_1((ioh), (iot), (off)+2) << 16 | \
  90         bus_space_read_1((ioh), (iot), (off)+3))
  91
  92 #define tav_read_time(ioh, iot, off)    (               \
  93         bus_space_read_1((ioh), (iot), (off))   |       \
  94         bus_space_read_1((ioh), (iot), (off)+1) << 8 |  \
  95         bus_space_read_1((ioh), (iot), (off)+2) << 16 | \
  96         bus_space_read_1((ioh), (iot), (off)+3) << 24 | \
  97         bus_space_read_1((ioh), (iot), (off)+4) << 32)
  98
  99 #define tav_write_byte(ioh, iot, off, v) bus_space_write_1(ioh, iot, off, v)
 100
 101 static __inline void
 102 tav_write_short(bus_space_tag_t iot, bus_space_handle_t ioh,
 103     bus_size_t off, uint16_t val)
 104 {
 105
 106         bus_space_write_1(iot, ioh, off+1, (val)>>8);
 107         bus_space_write_1(iot, ioh, off,  (uint8_t)val);
 108 }
 109
 110 #endif /* _TMS320AV110_VAR_H_ */