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1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */2/*3 * Copyright (C) 2021 Glider bv4 *5 * Based on include/uapi/linux/map_to_7segment.h:6 7 * Copyright (c) 2005 Henk Vergonet <Henk.Vergonet@gmail.com>8 */9 10#ifndef MAP_TO_14SEGMENT_H11#define MAP_TO_14SEGMENT_H12 13/* This file provides translation primitives and tables for the conversion14 * of (ASCII) characters to a 14-segments notation.15 *16 * The 14 segment's wikipedia notation below is used as standard.17 * See: https://en.wikipedia.org/wiki/Fourteen-segment_display18 *19 * Notation: +---a---+20 * |\ | /|21 * f h i j b22 * | \|/ |23 * +-g1+-g2+24 * | /|\ |25 * e k l m c26 * |/ | \|27 * +---d---+28 *29 * Usage:30 *31 * Register a map variable, and fill it with a character set:32 * static SEG14_DEFAULT_MAP(map_seg14);33 *34 *35 * Then use for conversion:36 * seg14 = map_to_seg14(&map_seg14, some_char);37 * ...38 *39 * In device drivers it is recommended, if required, to make the char map40 * accessible via the sysfs interface using the following scheme:41 *42 * static ssize_t map_seg14_show(struct device *dev,43 * struct device_attribute *attr, char *buf)44 * {45 * memcpy(buf, &map_seg14, sizeof(map_seg14));46 * return sizeof(map_seg14);47 * }48 * static ssize_t map_seg14_store(struct device *dev,49 * struct device_attribute *attr,50 * const char *buf, size_t cnt)51 * {52 * if (cnt != sizeof(map_seg14))53 * return -EINVAL;54 * memcpy(&map_seg14, buf, cnt);55 * return cnt;56 * }57 * static DEVICE_ATTR_RW(map_seg14);58 */59#include <linux/errno.h>60#include <linux/types.h>61 62#include <asm/byteorder.h>63 64#define BIT_SEG14_A 065#define BIT_SEG14_B 166#define BIT_SEG14_C 267#define BIT_SEG14_D 368#define BIT_SEG14_E 469#define BIT_SEG14_F 570#define BIT_SEG14_G1 671#define BIT_SEG14_G2 772#define BIT_SEG14_H 873#define BIT_SEG14_I 974#define BIT_SEG14_J 1075#define BIT_SEG14_K 1176#define BIT_SEG14_L 1277#define BIT_SEG14_M 1378#define BIT_SEG14_RESERVED1 1479#define BIT_SEG14_RESERVED2 1580 81struct seg14_conversion_map {82 __be16 table[128];83};84 85static __inline__ int map_to_seg14(struct seg14_conversion_map *map, int c)86{87 if (c < 0 || c >= sizeof(map->table) / sizeof(map->table[0]))88 return -EINVAL;89 90 return __be16_to_cpu(map->table[c]);91}92 93#define SEG14_CONVERSION_MAP(_name, _map) \94 struct seg14_conversion_map _name = { .table = { _map } }95 96/*97 * It is recommended to use a facility that allows user space to redefine98 * custom character sets for LCD devices. Please use a sysfs interface99 * as described above.100 */101#define MAP_TO_SEG14_SYSFS_FILE "map_seg14"102 103/*******************************************************************************104 * ASCII conversion table105 ******************************************************************************/106 107#define _SEG14(sym, a, b, c, d, e, f, g1, g2, h, j, k, l, m, n) \108 __cpu_to_be16( a << BIT_SEG14_A | b << BIT_SEG14_B | \109 c << BIT_SEG14_C | d << BIT_SEG14_D | \110 e << BIT_SEG14_E | f << BIT_SEG14_F | \111 g1 << BIT_SEG14_G1 | g2 << BIT_SEG14_G2 | \112 h << BIT_SEG14_H | j << BIT_SEG14_I | \113 k << BIT_SEG14_J | l << BIT_SEG14_K | \114 m << BIT_SEG14_L | n << BIT_SEG14_M )115 116#define _MAP_0_32_ASCII_SEG14_NON_PRINTABLE \117 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,118 119#define _MAP_33_47_ASCII_SEG14_SYMBOL \120 _SEG14('!', 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), \121 _SEG14('"', 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0), \122 _SEG14('#', 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0), \123 _SEG14('$', 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0), \124 _SEG14('%', 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0), \125 _SEG14('&', 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1), \126 _SEG14('\'',0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0), \127 _SEG14('(', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1), \128 _SEG14(')', 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0), \129 _SEG14('*', 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1), \130 _SEG14('+', 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0), \131 _SEG14(',', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0), \132 _SEG14('-', 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0), \133 _SEG14('.', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1), \134 _SEG14('/', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0),135 136#define _MAP_48_57_ASCII_SEG14_NUMERIC \137 _SEG14('0', 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0), \138 _SEG14('1', 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0), \139 _SEG14('2', 1, 1, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0), \140 _SEG14('3', 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0), \141 _SEG14('4', 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0), \142 _SEG14('5', 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1), \143 _SEG14('6', 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0), \144 _SEG14('7', 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0), \145 _SEG14('8', 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0), \146 _SEG14('9', 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0),147 148#define _MAP_58_64_ASCII_SEG14_SYMBOL \149 _SEG14(':', 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0), \150 _SEG14(';', 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0), \151 _SEG14('<', 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1), \152 _SEG14('=', 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0), \153 _SEG14('>', 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0), \154 _SEG14('?', 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0), \155 _SEG14('@', 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 0, 0),156 157#define _MAP_65_90_ASCII_SEG14_ALPHA_UPPER \158 _SEG14('A', 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0), \159 _SEG14('B', 1, 1, 1, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0), \160 _SEG14('C', 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0), \161 _SEG14('D', 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0), \162 _SEG14('E', 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0), \163 _SEG14('F', 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0), \164 _SEG14('G', 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0), \165 _SEG14('H', 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0), \166 _SEG14('I', 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0), \167 _SEG14('J', 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), \168 _SEG14('K', 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1), \169 _SEG14('L', 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0), \170 _SEG14('M', 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 0), \171 _SEG14('N', 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1), \172 _SEG14('O', 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0), \173 _SEG14('P', 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0), \174 _SEG14('Q', 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1), \175 _SEG14('R', 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1), \176 _SEG14('S', 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0), \177 _SEG14('T', 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0), \178 _SEG14('U', 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0), \179 _SEG14('V', 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0), \180 _SEG14('W', 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1), \181 _SEG14('X', 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1), \182 _SEG14('Y', 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0), \183 _SEG14('Z', 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0),184 185#define _MAP_91_96_ASCII_SEG14_SYMBOL \186 _SEG14('[', 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0), \187 _SEG14('\\',0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1), \188 _SEG14(']', 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), \189 _SEG14('^', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1), \190 _SEG14('_', 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), \191 _SEG14('`', 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0),192 193#define _MAP_97_122_ASCII_SEG14_ALPHA_LOWER \194 _SEG14('a', 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0), \195 _SEG14('b', 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1), \196 _SEG14('c', 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0), \197 _SEG14('d', 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0), \198 _SEG14('e', 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0), \199 _SEG14('f', 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0), \200 _SEG14('g', 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0), \201 _SEG14('h', 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0), \202 _SEG14('i', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0), \203 _SEG14('j', 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0), \204 _SEG14('k', 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1), \205 _SEG14('l', 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0), \206 _SEG14('m', 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 0), \207 _SEG14('n', 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0), \208 _SEG14('o', 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0), \209 _SEG14('p', 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0), \210 _SEG14('q', 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0), \211 _SEG14('r', 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0), \212 _SEG14('s', 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1), \213 _SEG14('t', 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0), \214 _SEG14('u', 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0), \215 _SEG14('v', 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0), \216 _SEG14('w', 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1), \217 _SEG14('x', 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1), \218 _SEG14('y', 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0), \219 _SEG14('z', 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0),220 221#define _MAP_123_126_ASCII_SEG14_SYMBOL \222 _SEG14('{', 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0), \223 _SEG14('|', 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0), \224 _SEG14('}', 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1), \225 _SEG14('~', 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0),226 227/* Maps */228#define MAP_ASCII14SEG_ALPHANUM \229 _MAP_0_32_ASCII_SEG14_NON_PRINTABLE \230 _MAP_33_47_ASCII_SEG14_SYMBOL \231 _MAP_48_57_ASCII_SEG14_NUMERIC \232 _MAP_58_64_ASCII_SEG14_SYMBOL \233 _MAP_65_90_ASCII_SEG14_ALPHA_UPPER \234 _MAP_91_96_ASCII_SEG14_SYMBOL \235 _MAP_97_122_ASCII_SEG14_ALPHA_LOWER \236 _MAP_123_126_ASCII_SEG14_SYMBOL237 238#define SEG14_DEFAULT_MAP(_name) \239 SEG14_CONVERSION_MAP(_name, MAP_ASCII14SEG_ALPHANUM)240 241#endif /* MAP_TO_14SEGMENT_H */242