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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: