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iq80310_7seg.c revision 1.1 
      1 /*	$NetBSD: iq80310_7seg.c,v 1.1 2001/11/07 00:33:23 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2001 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      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  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed for the NetBSD Project by
     20  *	Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 /*
     39  * Support for the 7-segment display on the Intel IQ80310.
     40  */
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 
     45 #include <machine/bus.h>
     46 
     47 #include <evbarm/iq80310/iq80310reg.h>
     48 #include <evbarm/iq80310/obiovar.h>
     49 
     50 #define	ASCIIMAP_START	'0'
     51 #define	ASCIIMAP_END	'9'
     52 
     53 static const uint8_t asciimap[] = {
     54 /*	+#####+
     55  *	#     #
     56  *	#     #
     57  *	#     #
     58  *	+-----+
     59  *	#     #
     60  *	#     #
     61  *	#     #
     62  *	+#####+
     63  */
     64 	SEG_G,
     65 
     66 /*	+-----+
     67  *	|     #
     68  *	|     #
     69  *	|     #
     70  *	+-----+
     71  *	|     #
     72  *	|     #
     73  *	|     #
     74  *	+-----+
     75  */
     76 	SEG_A|SEG_D|SEG_E|SEG_F|SEG_G,
     77 
     78 /*	+#####+
     79  *	|     #
     80  *	|     #
     81  *	|     #
     82  *	+#####+
     83  *	#     |
     84  *	#     |
     85  *	#     |
     86  *	+#####+
     87  */
     88 	SEG_C|SEG_F,
     89 
     90 /*	+#####+
     91  *	|     #
     92  *	|     #
     93  *	|     #
     94  *	+#####+
     95  *	|     #
     96  *	|     #
     97  *	|     #
     98  *	+#####+
     99  */
    100 	SEG_E|SEG_F,
    101 
    102 /*	+-----+
    103  *	#     #
    104  *	#     #
    105  *	#     #
    106  *	+#####+
    107  *	|     #
    108  *	|     #
    109  *	|     #
    110  *	+-----+
    111  */
    112 	SEG_A|SEG_D|SEG_E,
    113 
    114 /*	+#####+
    115  *	#     |
    116  *	#     |
    117  *	#     |
    118  *	+#####+
    119  *	|     #
    120  *	|     #
    121  *	|     #
    122  *	+#####+
    123  */
    124 	SEG_B|SEG_E,
    125 
    126 /*	+#####+
    127  *	#     |
    128  *	#     |
    129  *	#     |
    130  *	+#####+
    131  *	#     #
    132  *	#     #
    133  *	#     #
    134  *	+#####+
    135  */
    136 	SEG_B,
    137 
    138 /*	+#####+
    139  *	|     #
    140  *	|     #
    141  *	|     #
    142  *	+-----+
    143  *	|     #
    144  *	|     #
    145  *	|     #
    146  *	+-----+
    147  */
    148 	SEG_D|SEG_E|SEG_F,
    149 
    150 /*	+#####+
    151  *	#     #
    152  *	#     #
    153  *	#     #
    154  *	+#####+
    155  *	#     #
    156  *	#     #
    157  *	#     #
    158  *	+#####+
    159  */
    160 	0,
    161 
    162 /*	+#####+
    163  *	#     #
    164  *	#     #
    165  *	#     #
    166  *	+#####+
    167  *	|     #
    168  *	|     #
    169  *	|     #
    170  *	+-----+
    171  */
    172 	SEG_D|SEG_E,
    173 };
    174 
    175 void
    176 iq80310_7seg(char a, char b)
    177 {
    178 	uint8_t msb, lsb;
    179 
    180 	if (a < ASCIIMAP_START || a > ASCIIMAP_END)
    181 		msb = 0xff;
    182 	else
    183 		msb = asciimap[a - ASCIIMAP_START] | SEG_DP;
    184 
    185 	if (b < ASCIIMAP_START || b > ASCIIMAP_END)
    186 		lsb = 0xff;
    187 	else
    188 		lsb = asciimap[b - ASCIIMAP_START] | SEG_DP;
    189 
    190 	bus_space_write_1(&obio_bs_tag, IQ80310_7SEG_MSB, 0, msb);
    191 	bus_space_write_1(&obio_bs_tag, IQ80310_7SEG_LSB, 0, lsb);
    192 }
    193