Annotation of sys/arch/sparc/dev/bt445reg.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: bt445reg.h,v 1.1 2003/06/17 21:21:31 miod Exp $ */
2: /*
3: * Copyright (c) 2003, Miodrag Vallat.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: *
14: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
18: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
20: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
22: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
23: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24: * POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27: /*
28: * Actual BT445 register layout
29: */
30:
31: /* Read/write address */
32: #define BT445_ADDRESS 0
33:
34: /*
35: * Access to a register is done by programming the address register with
36: * the low 8 bits, and then reading or writing at the register pointed out
37: * by the high 8 bits.
38: */
39: #define BT445_REGISTER_OFFSET(x) ((x) & 0xff)
40: #define BT445_REGISTER_INDEX(x) (((x) >> 8) & 0xff)
41:
42: /* Palette data - 3 r/w cycles par address, and autoincrement */
43: #define BT445_PALDATA 1
44:
45: /* Overlay palette data - 3 r/w cycles par address, and autoincrement */
46: #define BT445_OVPALDATA 3
47:
48: /*
49: * Various registers (very incomplete...)
50: */
51: #define BT445_ID 0x0200
52: #define BT445_REVISION 0x0201
53:
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