1 /* 2 * (C) Copyright 2002 ELTEC Elektronik AG 3 * Frank Gottschling <fgottschling@eltec.de> 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 /* i8042.c - Intel 8042 keyboard driver routines */ 25 26 /* includes */ 27 28 #include <common.h> 29 30 #ifdef CONFIG_I8042_KBD 31 32 #ifdef CONFIG_USE_CPCIDVI 33 extern u8 gt_cpcidvi_in8(u32 offset); 34 extern void gt_cpcidvi_out8(u32 offset, u8 data); 35 36 #define in8(a) gt_cpcidvi_in8(a) 37 #define out8(a, b) gt_cpcidvi_out8(a,b) 38 #endif 39 40 #include <i8042.h> 41 42 /* defines */ 43 44 #ifdef CONFIG_CONSOLE_CURSOR 45 extern void console_cursor (int state); 46 static int blinkCount = CFG_CONSOLE_BLINK_COUNT; 47 static int cursor_state = 0; 48 #endif 49 50 /* locals */ 51 52 static int kbd_input = -1; /* no input yet */ 53 static int kbd_mapping = KBD_US; /* default US keyboard */ 54 static int kbd_flags = NORMAL; /* after reset */ 55 static int kbd_state = 0; /* unshift code */ 56 57 static void kbd_conv_char (unsigned char scan_code); 58 static void kbd_led_set (void); 59 static void kbd_normal (unsigned char scan_code); 60 static void kbd_shift (unsigned char scan_code); 61 static void kbd_ctrl (unsigned char scan_code); 62 static void kbd_num (unsigned char scan_code); 63 static void kbd_caps (unsigned char scan_code); 64 static void kbd_scroll (unsigned char scan_code); 65 static void kbd_alt (unsigned char scan_code); 66 static int kbd_input_empty (void); 67 static int kbd_reset (void); 68 69 static unsigned char kbd_fct_map [144] = 70 { /* kbd_fct_map table for scan code */ 71 0, AS, AS, AS, AS, AS, AS, AS, /* scan 0- 7 */ 72 AS, AS, AS, AS, AS, AS, AS, AS, /* scan 8- F */ 73 AS, AS, AS, AS, AS, AS, AS, AS, /* scan 10-17 */ 74 AS, AS, AS, AS, AS, CN, AS, AS, /* scan 18-1F */ 75 AS, AS, AS, AS, AS, AS, AS, AS, /* scan 20-27 */ 76 AS, AS, SH, AS, AS, AS, AS, AS, /* scan 28-2F */ 77 AS, AS, AS, AS, AS, AS, SH, AS, /* scan 30-37 */ 78 AS, AS, CP, 0, 0, 0, 0, 0, /* scan 38-3F */ 79 0, 0, 0, 0, 0, NM, ST, ES, /* scan 40-47 */ 80 ES, ES, ES, ES, ES, ES, ES, ES, /* scan 48-4F */ 81 ES, ES, ES, ES, 0, 0, AS, 0, /* scan 50-57 */ 82 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */ 83 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */ 84 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */ 85 AS, 0, 0, AS, 0, 0, AS, 0, /* scan 70-77 */ 86 0, AS, 0, 0, 0, AS, 0, 0, /* scan 78-7F */ 87 AS, CN, AS, AS, AK, ST, EX, EX, /* enhanced */ 88 AS, EX, EX, AS, EX, AS, EX, EX /* enhanced */ 89 }; 90 91 static unsigned char kbd_key_map [2][5][144] = 92 { 93 { /* US keyboard */ 94 { /* unshift code */ 95 0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */ 96 '7', '8', '9', '0', '-', '=', 0x08, '\t', /* scan 8- F */ 97 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', /* scan 10-17 */ 98 'o', 'p', '[', ']', '\r', CN, 'a', 's', /* scan 18-1F */ 99 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', /* scan 20-27 */ 100 '\'', '`', SH, '\\', 'z', 'x', 'c', 'v', /* scan 28-2F */ 101 'b', 'n', 'm', ',', '.', '/', SH, '*', /* scan 30-37 */ 102 ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */ 103 0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */ 104 '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */ 105 '2', '3', '0', '.', 0, 0, 0, 0, /* scan 50-57 */ 106 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */ 107 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */ 108 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */ 109 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */ 110 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */ 111 '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */ 112 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */ 113 }, 114 { /* shift code */ 115 0, 0x1b, '!', '@', '#', '$', '%', '^', /* scan 0- 7 */ 116 '&', '*', '(', ')', '_', '+', 0x08, '\t', /* scan 8- F */ 117 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', /* scan 10-17 */ 118 'O', 'P', '{', '}', '\r', CN, 'A', 'S', /* scan 18-1F */ 119 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', /* scan 20-27 */ 120 '"', '~', SH, '|', 'Z', 'X', 'C', 'V', /* scan 28-2F */ 121 'B', 'N', 'M', '<', '>', '?', SH, '*', /* scan 30-37 */ 122 ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */ 123 0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */ 124 '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */ 125 '2', '3', '0', '.', 0, 0, 0, 0, /* scan 50-57 */ 126 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */ 127 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */ 128 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */ 129 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */ 130 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */ 131 '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */ 132 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */ 133 }, 134 { /* control code */ 135 0xff, 0x1b, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, /* scan 0- 7 */ 136 0x1e, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, '\t', /* scan 8- F */ 137 0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, /* scan 10-17 */ 138 0x0f, 0x10, 0x1b, 0x1d, '\r', CN, 0x01, 0x13, /* scan 18-1F */ 139 0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0xff, /* scan 20-27 */ 140 0xff, 0x1c, SH, 0xff, 0x1a, 0x18, 0x03, 0x16, /* scan 28-2F */ 141 0x02, 0x0e, 0x0d, 0xff, 0xff, 0xff, SH, 0xff, /* scan 30-37 */ 142 0xff, 0xff, CP, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */ 143 0xff, 0xff, 0xff, 0xff, 0xff, NM, ST, 0xff, /* scan 40-47 */ 144 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48-4F */ 145 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50-57 */ 146 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */ 147 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */ 148 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */ 149 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */ 150 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */ 151 '\r', CN, '/', '*', ' ', ST, 0xff, 0xff, /* extended */ 152 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */ 153 }, 154 { /* non numeric code */ 155 0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */ 156 '7', '8', '9', '0', '-', '=', 0x08, '\t', /* scan 8- F */ 157 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', /* scan 10-17 */ 158 'o', 'p', '[', ']', '\r', CN, 'a', 's', /* scan 18-1F */ 159 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', /* scan 20-27 */ 160 '\'', '`', SH, '\\', 'z', 'x', 'c', 'v', /* scan 28-2F */ 161 'b', 'n', 'm', ',', '.', '/', SH, '*', /* scan 30-37 */ 162 ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */ 163 0, 0, 0, 0, 0, NM, ST, 'w', /* scan 40-47 */ 164 'x', 'y', 'l', 't', 'u', 'v', 'm', 'q', /* scan 48-4F */ 165 'r', 's', 'p', 'n', 0, 0, 0, 0, /* scan 50-57 */ 166 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */ 167 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */ 168 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */ 169 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */ 170 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */ 171 '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */ 172 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */ 173 }, 174 { /* right alt mode - not used in US keyboard */ 175 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 0 - 7 */ 176 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 8 - F */ 177 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 10 -17 */ 178 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 18 -1F */ 179 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 20 -27 */ 180 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 28 -2F */ 181 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 30 -37 */ 182 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38 -3F */ 183 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 40 -47 */ 184 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48 -4F */ 185 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50 -57 */ 186 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58 -5F */ 187 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60 -67 */ 188 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68 -6F */ 189 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70 -77 */ 190 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78 -7F */ 191 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* extended */ 192 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */ 193 } 194 }, 195 { /* german keyboard */ 196 { /* unshift code */ 197 0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */ 198 '7', '8', '9', '0', 0xe1, '\'', 0x08, '\t', /* scan 8- F */ 199 'q', 'w', 'e', 'r', 't', 'z', 'u', 'i', /* scan 10-17 */ 200 'o', 'p', 0x81, '+', '\r', CN, 'a', 's', /* scan 18-1F */ 201 'd', 'f', 'g', 'h', 'j', 'k', 'l', 0x94, /* scan 20-27 */ 202 0x84, '^', SH, '#', 'y', 'x', 'c', 'v', /* scan 28-2F */ 203 'b', 'n', 'm', ',', '.', '-', SH, '*', /* scan 30-37 */ 204 ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */ 205 0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */ 206 '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */ 207 '2', '3', '0', ',', 0, 0, '<', 0, /* scan 50-57 */ 208 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */ 209 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */ 210 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */ 211 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */ 212 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */ 213 '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */ 214 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */ 215 }, 216 { /* shift code */ 217 0, 0x1b, '!', '"', 0x15, '$', '%', '&', /* scan 0- 7 */ 218 '/', '(', ')', '=', '?', '`', 0x08, '\t', /* scan 8- F */ 219 'Q', 'W', 'E', 'R', 'T', 'Z', 'U', 'I', /* scan 10-17 */ 220 'O', 'P', 0x9a, '*', '\r', CN, 'A', 'S', /* scan 18-1F */ 221 'D', 'F', 'G', 'H', 'J', 'K', 'L', 0x99, /* scan 20-27 */ 222 0x8e, 0xf8, SH, '\'', 'Y', 'X', 'C', 'V', /* scan 28-2F */ 223 'B', 'N', 'M', ';', ':', '_', SH, '*', /* scan 30-37 */ 224 ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */ 225 0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */ 226 '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */ 227 '2', '3', '0', ',', 0, 0, '>', 0, /* scan 50-57 */ 228 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */ 229 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */ 230 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */ 231 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */ 232 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */ 233 '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */ 234 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */ 235 }, 236 { /* control code */ 237 0xff, 0x1b, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, /* scan 0- 7 */ 238 0x1e, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, '\t', /* scan 8- F */ 239 0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, /* scan 10-17 */ 240 0x0f, 0x10, 0x1b, 0x1d, '\r', CN, 0x01, 0x13, /* scan 18-1F */ 241 0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0xff, /* scan 20-27 */ 242 0xff, 0x1c, SH, 0xff, 0x1a, 0x18, 0x03, 0x16, /* scan 28-2F */ 243 0x02, 0x0e, 0x0d, 0xff, 0xff, 0xff, SH, 0xff, /* scan 30-37 */ 244 0xff, 0xff, CP, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */ 245 0xff, 0xff, 0xff, 0xff, 0xff, NM, ST, 0xff, /* scan 40-47 */ 246 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48-4F */ 247 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50-57 */ 248 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */ 249 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */ 250 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */ 251 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */ 252 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */ 253 '\r', CN, '/', '*', ' ', ST, 0xff, 0xff, /* extended */ 254 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */ 255 }, 256 { /* non numeric code */ 257 0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */ 258 '7', '8', '9', '0', 0xe1, '\'', 0x08, '\t', /* scan 8- F */ 259 'q', 'w', 'e', 'r', 't', 'z', 'u', 'i', /* scan 10-17 */ 260 'o', 'p', 0x81, '+', '\r', CN, 'a', 's', /* scan 18-1F */ 261 'd', 'f', 'g', 'h', 'j', 'k', 'l', 0x94, /* scan 20-27 */ 262 0x84, '^', SH, 0, 'y', 'x', 'c', 'v', /* scan 28-2F */ 263 'b', 'n', 'm', ',', '.', '-', SH, '*', /* scan 30-37 */ 264 ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */ 265 0, 0, 0, 0, 0, NM, ST, 'w', /* scan 40-47 */ 266 'x', 'y', 'l', 't', 'u', 'v', 'm', 'q', /* scan 48-4F */ 267 'r', 's', 'p', 'n', 0, 0, '<', 0, /* scan 50-57 */ 268 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */ 269 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */ 270 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */ 271 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */ 272 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */ 273 '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */ 274 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */ 275 }, 276 { /* Right alt mode - is used in German keyboard */ 277 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 0 - 7 */ 278 '{', '[', ']', '}', '\\', 0xff, 0xff, 0xff, /* scan 8 - F */ 279 '@', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 10 -17 */ 280 0xff, 0xff, 0xff, '~', 0xff, 0xff, 0xff, 0xff, /* scan 18 -1F */ 281 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 20 -27 */ 282 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 28 -2F */ 283 0xff, 0xff, 0xe6, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 30 -37 */ 284 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38 -3F */ 285 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 40 -47 */ 286 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48 -4F */ 287 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '|', 0xff, /* scan 50 -57 */ 288 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58 -5F */ 289 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60 -67 */ 290 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68 -6F */ 291 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70 -77 */ 292 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78 -7F */ 293 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* extended */ 294 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */ 295 } 296 } 297 }; 298 299 static unsigned char ext_key_map [] = 300 { 301 0x1c, /* keypad enter */ 302 0x1d, /* right control */ 303 0x35, /* keypad slash */ 304 0x37, /* print screen */ 305 0x38, /* right alt */ 306 0x46, /* break */ 307 0x47, /* editpad home */ 308 0x48, /* editpad up */ 309 0x49, /* editpad pgup */ 310 0x4b, /* editpad left */ 311 0x4d, /* editpad right */ 312 0x4f, /* editpad end */ 313 0x50, /* editpad dn */ 314 0x51, /* editpad pgdn */ 315 0x52, /* editpad ins */ 316 0x53, /* editpad del */ 317 0x00 /* map end */ 318 }; 319 320 /******************************************************************************* 321 * 322 * i8042_kbd_init - reset keyboard and init state flags 323 */ 324 int i8042_kbd_init (void) 325 { 326 int keymap, try; 327 char *penv; 328 329 #ifdef CONFIG_USE_CPCIDVI 330 if ((penv = getenv ("console")) != NULL) { 331 if (strncmp (penv, "serial", 7) == 0) { 332 return -1; 333 } 334 } 335 #endif 336 /* Init keyboard device (default US layout) */ 337 keymap = KBD_US; 338 if ((penv = getenv ("keymap")) != NULL) 339 { 340 if (strncmp (penv, "de", 3) == 0) 341 keymap = KBD_GER; 342 } 343 344 for (try = 0; try < KBD_RESET_TRIES; try++) 345 { 346 if (kbd_reset() == 0) 347 { 348 kbd_mapping = keymap; 349 kbd_flags = NORMAL; 350 kbd_state = 0; 351 kbd_led_set(); 352 return 0; 353 } 354 } 355 return -1; 356 } 357 358 359 /******************************************************************************* 360 * 361 * i8042_tstc - test if keyboard input is available 362 * option: cursor blinking if called in a loop 363 */ 364 int i8042_tstc (void) 365 { 366 unsigned char scan_code = 0; 367 368 #ifdef CONFIG_CONSOLE_CURSOR 369 if (--blinkCount == 0) 370 { 371 cursor_state ^= 1; 372 console_cursor (cursor_state); 373 blinkCount = CFG_CONSOLE_BLINK_COUNT; 374 udelay (10); 375 } 376 #endif 377 378 if ((in8 (I8042_STATUS_REG) & 0x01) == 0) 379 return 0; 380 else 381 { 382 scan_code = in8 (I8042_DATA_REG); 383 if (scan_code == 0xfa) 384 return 0; 385 386 kbd_conv_char(scan_code); 387 388 if (kbd_input != -1) 389 return 1; 390 } 391 return 0; 392 } 393 394 395 /******************************************************************************* 396 * 397 * i8042_getc - wait till keyboard input is available 398 * option: turn on/off cursor while waiting 399 */ 400 int i8042_getc (void) 401 { 402 int ret_chr; 403 unsigned char scan_code; 404 405 while (kbd_input == -1) 406 { 407 while ((in8 (I8042_STATUS_REG) & 0x01) == 0) 408 { 409 #ifdef CONFIG_CONSOLE_CURSOR 410 if (--blinkCount==0) 411 { 412 cursor_state ^= 1; 413 console_cursor (cursor_state); 414 blinkCount = CFG_CONSOLE_BLINK_COUNT; 415 } 416 udelay (10); 417 #endif 418 } 419 420 scan_code = in8 (I8042_DATA_REG); 421 422 if (scan_code != 0xfa) 423 kbd_conv_char (scan_code); 424 } 425 ret_chr = kbd_input; 426 kbd_input = -1; 427 return ret_chr; 428 } 429 430 431 /******************************************************************************/ 432 433 static void kbd_conv_char (unsigned char scan_code) 434 { 435 if (scan_code == 0xe0) 436 { 437 kbd_flags |= EXT; 438 return; 439 } 440 441 /* if high bit of scan_code, set break flag */ 442 if (scan_code & 0x80) 443 kbd_flags |= BRK; 444 else 445 kbd_flags &= ~BRK; 446 447 if ((scan_code == 0xe1) || (kbd_flags & E1)) 448 { 449 if (scan_code == 0xe1) 450 { 451 kbd_flags ^= BRK; /* reset the break flag */ 452 kbd_flags ^= E1; /* bitwise EXOR with E1 flag */ 453 } 454 return; 455 } 456 457 scan_code &= 0x7f; 458 459 if (kbd_flags & EXT) 460 { 461 int i; 462 463 kbd_flags ^= EXT; 464 for (i=0; ext_key_map[i]; i++) 465 { 466 if (ext_key_map[i] == scan_code) 467 { 468 scan_code = 0x80 + i; 469 break; 470 } 471 } 472 /* not found ? */ 473 if (!ext_key_map[i]) 474 return; 475 } 476 477 switch (kbd_fct_map [scan_code]) 478 { 479 case AS: kbd_normal (scan_code); 480 break; 481 case SH: kbd_shift (scan_code); 482 break; 483 case CN: kbd_ctrl (scan_code); 484 break; 485 case NM: kbd_num (scan_code); 486 break; 487 case CP: kbd_caps (scan_code); 488 break; 489 case ST: kbd_scroll (scan_code); 490 break; 491 case AK: kbd_alt (scan_code); 492 break; 493 } 494 return; 495 } 496 497 498 /******************************************************************************/ 499 500 static void kbd_normal (unsigned char scan_code) 501 { 502 unsigned char chr; 503 504 if ((kbd_flags & BRK) == NORMAL) 505 { 506 chr = kbd_key_map [kbd_mapping][kbd_state][scan_code]; 507 if ((chr == 0xff) || (chr == 0x00)) 508 { 509 return; 510 } 511 512 /* if caps lock convert upper to lower */ 513 if (((kbd_flags & CAPS) == CAPS) && (chr >= 'a' && chr <= 'z')) 514 { 515 chr -= 'a' - 'A'; 516 } 517 kbd_input = chr; 518 } 519 } 520 521 522 /******************************************************************************/ 523 524 static void kbd_shift (unsigned char scan_code) 525 { 526 if ((kbd_flags & BRK) == BRK) 527 { 528 kbd_state = AS; 529 kbd_flags &= (~SHIFT); 530 } 531 else 532 { 533 kbd_state = SH; 534 kbd_flags |= SHIFT; 535 } 536 } 537 538 539 /******************************************************************************/ 540 541 static void kbd_ctrl (unsigned char scan_code) 542 { 543 if ((kbd_flags & BRK) == BRK) 544 { 545 kbd_state = AS; 546 kbd_flags &= (~CTRL); 547 } 548 else 549 { 550 kbd_state = CN; 551 kbd_flags |= CTRL; 552 } 553 } 554 555 556 /******************************************************************************/ 557 558 static void kbd_caps (unsigned char scan_code) 559 { 560 if ((kbd_flags & BRK) == NORMAL) 561 { 562 kbd_flags ^= CAPS; 563 kbd_led_set (); /* update keyboard LED */ 564 } 565 } 566 567 568 /******************************************************************************/ 569 570 static void kbd_num (unsigned char scan_code) 571 { 572 if ((kbd_flags & BRK) == NORMAL) 573 { 574 kbd_flags ^= NUM; 575 kbd_state = (kbd_flags & NUM) ? AS : NM; 576 kbd_led_set (); /* update keyboard LED */ 577 } 578 } 579 580 581 /******************************************************************************/ 582 583 static void kbd_scroll (unsigned char scan_code) 584 { 585 if ((kbd_flags & BRK) == NORMAL) 586 { 587 kbd_flags ^= STP; 588 kbd_led_set (); /* update keyboard LED */ 589 if (kbd_flags & STP) 590 kbd_input = 0x13; 591 else 592 kbd_input = 0x11; 593 } 594 } 595 596 /******************************************************************************/ 597 598 static void kbd_alt (unsigned char scan_code) 599 { 600 if ((kbd_flags & BRK) == BRK) 601 { 602 kbd_state = AS; 603 kbd_flags &= (~ALT); 604 } 605 else 606 { 607 kbd_state = AK; 608 kbd_flags &= ALT; 609 } 610 } 611 612 613 /******************************************************************************/ 614 615 static void kbd_led_set (void) 616 { 617 kbd_input_empty(); 618 out8 (I8042_DATA_REG, 0xed); /* SET LED command */ 619 kbd_input_empty(); 620 out8 (I8042_DATA_REG, (kbd_flags & 0x7)); /* LED bits only */ 621 } 622 623 624 /******************************************************************************/ 625 626 static int kbd_input_empty (void) 627 { 628 int kbdTimeout = KBD_TIMEOUT; 629 630 /* wait for input buf empty */ 631 while ((in8 (I8042_STATUS_REG) & 0x02) && kbdTimeout--) 632 udelay(1000); 633 634 return kbdTimeout; 635 } 636 637 /******************************************************************************/ 638 639 static int kbd_reset (void) 640 { 641 if (kbd_input_empty() == 0) 642 return -1; 643 644 out8 (I8042_DATA_REG, 0xff); 645 646 udelay(250000); 647 648 if (kbd_input_empty() == 0) 649 return -1; 650 651 #ifdef CONFIG_USE_CPCIDVI 652 out8 (I8042_COMMAND_REG, 0x60); 653 #else 654 out8 (I8042_DATA_REG, 0x60); 655 #endif 656 657 if (kbd_input_empty() == 0) 658 return -1; 659 660 out8 (I8042_DATA_REG, 0x45); 661 662 663 if (kbd_input_empty() == 0) 664 return -1; 665 666 out8 (I8042_COMMAND_REG, 0xae); 667 668 if (kbd_input_empty() == 0) 669 return -1; 670 671 return 0; 672 } 673 674 #endif /* CONFIG_I8042_KBD */ 675