1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * Translate key codes into ASCII 4 * 5 * Copyright (c) 2011 The Chromium OS Authors. 6 * (C) Copyright 2004 DENX Software Engineering, Wolfgang Denk, wd@denx.de 7 */ 8 9#include <common.h> 10#include <console.h> 11#include <dm.h> 12#include <env.h> 13#include <errno.h> 14#include <log.h> 15#include <stdio_dev.h> 16#include <input.h> 17#ifdef CONFIG_DM_KEYBOARD 18#include <keyboard.h> 19#endif 20#include <linux/input.h> 21 22enum { 23 /* These correspond to the lights on the keyboard */ 24 FLAG_SCROLL_LOCK = 1 << 0, 25 FLAG_NUM_LOCK = 1 << 1, 26 FLAG_CAPS_LOCK = 1 << 2, 27 28 /* Special flag ORed with key code to indicate release */ 29 KEY_RELEASE = 1 << 15, 30 KEY_MASK = 0xfff, 31}; 32 33/* 34 * These takes map key codes to ASCII. 0xff means no key, or special key. 35 * Three tables are provided - one for plain keys, one for when the shift 36 * 'modifier' key is pressed and one for when the ctrl modifier key is 37 * pressed. 38 */ 39static const uchar kbd_plain_xlate[] = { 40 0xff, 0x1b, '1', '2', '3', '4', '5', '6', 41 '7', '8', '9', '0', '-', '=', '\b', '\t', /* 0x00 - 0x0f */ 42 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 43 'o', 'p', '[', ']', '\r', 0xff, 'a', 's', /* 0x10 - 0x1f */ 44 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', 45 '\'', '`', 0xff, '\\', 'z', 'x', 'c', 'v', /* 0x20 - 0x2f */ 46 'b', 'n', 'm', ',' , '.', '/', 0xff, 0xff, 0xff, 47 ' ', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x30 - 0x3f */ 48 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '7', 49 '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */ 50 '2', '3', '0', '.', 0xff, 0xff, 0xff, 0xff, 51 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x50 - 0x5F */ 52 '\r', 0xff, '/', '*', 53}; 54 55static unsigned char kbd_shift_xlate[] = { 56 0xff, 0x1b, '!', '@', '#', '$', '%', '^', 57 '&', '*', '(', ')', '_', '+', '\b', '\t', /* 0x00 - 0x0f */ 58 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 59 'O', 'P', '{', '}', '\r', 0xff, 'A', 'S', /* 0x10 - 0x1f */ 60 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', 61 '"', '~', 0xff, '|', 'Z', 'X', 'C', 'V', /* 0x20 - 0x2f */ 62 'B', 'N', 'M', '<', '>', '?', 0xff, 0xff, 0xff, 63 ' ', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x30 - 0x3f */ 64 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '7', 65 '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */ 66 '2', '3', '0', '.', 0xff, 0xff, 0xff, 0xff, 0xff, 67 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x50 - 0x5F */ 68 '\r', 0xff, '/', '*', 69}; 70 71static unsigned char kbd_ctrl_xlate[] = { 72 0xff, 0x1b, '1', 0x00, '3', '4', '5', 0x1E, 73 '7', '8', '9', '0', 0x1F, '=', '\b', '\t', /* 0x00 - 0x0f */ 74 0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, 75 0x0f, 0x10, 0x1b, 0x1d, '\n', 0xff, 0x01, 0x13, /* 0x10 - 0x1f */ 76 0x04, 0x06, 0x08, 0x09, 0x0a, 0x0b, 0x0c, ';', 77 '\'', '~', 0x00, 0x1c, 0x1a, 0x18, 0x03, 0x16, /* 0x20 - 0x2f */ 78 0x02, 0x0e, 0x0d, '<', '>', '?', 0xff, 0xff, 79 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x30 - 0x3f */ 80 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '7', 81 '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */ 82 '2', '3', '0', '.', 0xff, 0xff, 0xff, 0xff, 83 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x50 - 0x5F */ 84 '\r', 0xff, '/', '*', 85}; 86 87/* 88 * German keymap. Special letters are mapped according to code page 437. 89 */ 90static const uchar kbd_plain_xlate_german[] = { 91 0xff, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 00-07 */ 92 '7', '8', '9', '0', 0xe1, '\'', 0x08, '\t', /* scan 08-0F */ 93 'q', 'w', 'e', 'r', 't', 'z', 'u', 'i', /* scan 10-17 */ 94 'o', 'p', 0x81, '+', '\r', 0xff, 'a', 's', /* scan 18-1F */ 95 'd', 'f', 'g', 'h', 'j', 'k', 'l', 0x94, /* scan 20-27 */ 96 0x84, '^', 0xff, '#', 'y', 'x', 'c', 'v', /* scan 28-2F */ 97 'b', 'n', 'm', ',', '.', '-', 0xff, '*', /* scan 30-37 */ 98 ' ', ' ', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */ 99 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '7', /* scan 40-47 */ 100 '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */ 101 '2', '3', '0', ',', 0xff, 0xff, '<', 0xff, /* scan 50-57 */ 102 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */ 103 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */ 104 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */ 105 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */ 106 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */ 107 '\r', 0xff, '/', '*', 108}; 109 110static unsigned char kbd_shift_xlate_german[] = { 111 0xff, 0x1b, '!', '"', 0x15, '$', '%', '&', /* scan 00-07 */ 112 '/', '(', ')', '=', '?', '`', 0x08, '\t', /* scan 08-0F */ 113 'Q', 'W', 'E', 'R', 'T', 'Z', 'U', 'I', /* scan 10-17 */ 114 'O', 'P', 0x9a, '*', '\r', 0xff, 'A', 'S', /* scan 18-1F */ 115 'D', 'F', 'G', 'H', 'J', 'K', 'L', 0x99, /* scan 20-27 */ 116 0x8e, 0xf8, 0xff, '\'', 'Y', 'X', 'C', 'V', /* scan 28-2F */ 117 'B', 'N', 'M', ';', ':', '_', 0xff, '*', /* scan 30-37 */ 118 ' ', ' ', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */ 119 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '7', /* scan 40-47 */ 120 '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */ 121 '2', '3', '0', ',', 0xff, 0xff, '>', 0xff, /* scan 50-57 */ 122 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */ 123 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */ 124 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */ 125 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */ 126 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */ 127 '\r', 0xff, '/', '*', 128}; 129 130static unsigned char kbd_right_alt_xlate_german[] = { 131 0xff, 0xff, 0xff, 0xfd, 0xff, 0xff, 0xff, 0xff, /* scan 00-07 */ 132 '{', '[', ']', '}', '\\', 0xff, 0xff, 0xff, /* scan 08-0F */ 133 '@', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 10-17 */ 134 0xff, 0xff, 0xff, '~', 0xff, 0xff, 0xff, 0xff, /* scan 18-1F */ 135 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 20-27 */ 136 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 28-2F */ 137 0xff, 0xff, 0xe6, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 30-37 */ 138 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */ 139 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 40-47 */ 140 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48-4F */ 141 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '|', 0xff, /* scan 50-57 */ 142}; 143 144enum kbd_mask { 145 KBD_ENGLISH = 1 << 0, 146 KBD_GERMAN = 1 << 1, 147}; 148 149static struct kbd_entry { 150 int kbd_mask; /* Which languages this is for */ 151 int left_keycode; /* Left keycode to select this map */ 152 int right_keycode; /* Right keycode to select this map */ 153 const uchar *xlate; /* Ascii code for each keycode */ 154 int num_entries; /* Number of entries in xlate */ 155} kbd_entry[] = { 156 { KBD_ENGLISH, -1, -1, 157 kbd_plain_xlate, ARRAY_SIZE(kbd_plain_xlate) }, 158 { KBD_GERMAN, -1, -1, 159 kbd_plain_xlate_german, ARRAY_SIZE(kbd_plain_xlate_german) }, 160 { KBD_ENGLISH, KEY_LEFTSHIFT, KEY_RIGHTSHIFT, 161 kbd_shift_xlate, ARRAY_SIZE(kbd_shift_xlate) }, 162 { KBD_GERMAN, KEY_LEFTSHIFT, KEY_RIGHTSHIFT, 163 kbd_shift_xlate_german, ARRAY_SIZE(kbd_shift_xlate_german) }, 164 { KBD_ENGLISH | KBD_GERMAN, KEY_LEFTCTRL, KEY_RIGHTCTRL, 165 kbd_ctrl_xlate, ARRAY_SIZE(kbd_ctrl_xlate) }, 166 { KBD_GERMAN, -1, KEY_RIGHTALT, 167 kbd_right_alt_xlate_german, 168 ARRAY_SIZE(kbd_right_alt_xlate_german) }, 169 {}, 170}; 171 172/* 173 * The table contains conversions from scan key codes to ECMA-48 escape 174 * sequences. The same sequences exist in the withdrawn ANSI 3.64 standard. 175 * 176 * As all escape sequences start with 0x1b this byte has been removed. 177 * 178 * This table is incomplete in that it does not include all possible extra keys. 179 */ 180static struct { 181 int kbd_scan_code; 182 char *escape; 183} kbd_to_ansi364[] = { 184 { KEY_UP, "[A"}, 185 { KEY_LEFT, "[D"}, 186 { KEY_RIGHT, "[C"}, 187 { KEY_DOWN, "[B"}, 188 { KEY_F1, "OP"}, 189 { KEY_F2, "OQ"}, 190 { KEY_F3, "OR"}, 191 { KEY_F4, "OS"}, 192 { KEY_F5, "[15~"}, 193 { KEY_F6, "[17~"}, 194 { KEY_F7, "[18~"}, 195 { KEY_F8, "[19~"}, 196 { KEY_F9, "[20~"}, 197 { KEY_F10, "[21~"}, 198}; 199 200/* Maximum number of output characters that an ANSI sequence expands to */ 201#define ANSI_CHAR_MAX 5 202 203static int input_queue_ascii(struct input_config *config, int ch) 204{ 205 if (config->fifo_in + 1 == INPUT_BUFFER_LEN) { 206 if (!config->fifo_out) 207 return -1; /* buffer full */ 208 else 209 config->fifo_in = 0; 210 } else { 211 if (config->fifo_in + 1 == config->fifo_out) 212 return -1; /* buffer full */ 213 config->fifo_in++; 214 } 215 debug(" {%02x} ", ch); 216 config->fifo[config->fifo_in] = (uchar)ch; 217 218 return 0; 219} 220 221int input_tstc(struct input_config *config) 222{ 223 if (config->fifo_in == config->fifo_out && config->read_keys) { 224 if (!(*config->read_keys)(config)) 225 return 0; 226 } 227 return config->fifo_in != config->fifo_out; 228} 229 230int input_getc(struct input_config *config) 231{ 232 int err = 0; 233 234 while (config->fifo_in == config->fifo_out) { 235 if (config->read_keys) 236 err = (*config->read_keys)(config); 237 if (err) 238 return -1; 239 } 240 241 if (++config->fifo_out == INPUT_BUFFER_LEN) 242 config->fifo_out = 0; 243 244 return config->fifo[config->fifo_out]; 245} 246 247/** 248 * Process a modifier/special key press or release and decide which key 249 * translation array should be used as a result. 250 * 251 * TODO: Should keep track of modifier press/release 252 * 253 * @param config Input state 254 * @param key Key code to process 255 * @param release 0 if a press, 1 if a release 256 * Return: pointer to keycode->ascii translation table that should be used 257 */ 258static struct input_key_xlate *process_modifier(struct input_config *config, 259 int key, int release) 260{ 261#ifdef CONFIG_DM_KEYBOARD 262 struct udevice *dev = config->dev; 263 struct keyboard_ops *ops = keyboard_get_ops(dev); 264#endif 265 struct input_key_xlate *table; 266 int i; 267 268 /* Start with the main table, and see what modifiers change it */ 269 assert(config->num_tables > 0); 270 table = &config->table[0]; 271 for (i = 1; i < config->num_tables; i++) { 272 struct input_key_xlate *tab = &config->table[i]; 273 274 if (key == tab->left_keycode || key == tab->right_keycode) 275 table = tab; 276 } 277 278 /* Handle the lighted keys */ 279 if (!release) { 280 int flip = -1; 281 282 switch (key) { 283 case KEY_SCROLLLOCK: 284 flip = FLAG_SCROLL_LOCK; 285 break; 286 case KEY_NUMLOCK: 287 flip = FLAG_NUM_LOCK; 288 break; 289 case KEY_CAPSLOCK: 290 flip = FLAG_CAPS_LOCK; 291 break; 292 } 293 294 if (flip != -1) { 295 int leds = 0; 296 297 config->flags ^= flip; 298 if (config->flags & FLAG_NUM_LOCK) 299 leds |= INPUT_LED_NUM; 300 if (config->flags & FLAG_CAPS_LOCK) 301 leds |= INPUT_LED_CAPS; 302 if (config->flags & FLAG_SCROLL_LOCK) 303 leds |= INPUT_LED_SCROLL; 304 config->leds = leds; 305 config->leds_changed = flip; 306 307#ifdef CONFIG_DM_KEYBOARD 308 if (ops->update_leds) { 309 if (ops->update_leds(dev, config->leds)) 310 debug("Update keyboard's LED failed\n"); 311 } 312#endif 313 } 314 } 315 316 return table; 317} 318 319/** 320 * Search an int array for a key value 321 * 322 * @param array Array to search 323 * @param count Number of elements in array 324 * @param key Key value to find 325 * Return: element where value was first found, -1 if none 326 */ 327static int array_search(int *array, int count, int key) 328{ 329 int i; 330 331 for (i = 0; i < count; i++) { 332 if (array[i] == key) 333 return i; 334 } 335 336 return -1; 337} 338 339/** 340 * Sort an array so that those elements that exist in the ordering are 341 * first in the array, and in the same order as the ordering. The algorithm 342 * is O(count * ocount) and designed for small arrays. 343 * 344 * TODO: Move this to common / lib? 345 * 346 * @param dest Array with elements to sort, also destination array 347 * @param count Number of elements to sort 348 * @param order Array containing ordering elements 349 * @param ocount Number of ordering elements 350 * Return: number of elements in dest that are in order (these will be at the 351 * start of dest). 352 */ 353static int sort_array_by_ordering(int *dest, int count, int *order, 354 int ocount) 355{ 356 int temp[count]; 357 int dest_count; 358 int same; /* number of elements which are the same */ 359 int i; 360 361 /* setup output items, copy items to be sorted into our temp area */ 362 memcpy(temp, dest, count * sizeof(*dest)); 363 dest_count = 0; 364 365 /* work through the ordering, move over the elements we agree on */ 366 for (i = 0; i < ocount; i++) { 367 if (array_search(temp, count, order[i]) != -1) 368 dest[dest_count++] = order[i]; 369 } 370 same = dest_count; 371 372 /* now move over the elements that are not in the ordering */ 373 for (i = 0; i < count; i++) { 374 if (array_search(order, ocount, temp[i]) == -1) 375 dest[dest_count++] = temp[i]; 376 } 377 assert(dest_count == count); 378 return same; 379} 380 381/** 382 * Check a list of key codes against the previous key scan 383 * 384 * Given a list of new key codes, we check how many of these are the same 385 * as last time. 386 * 387 * @param config Input state 388 * @param keycode List of key codes to examine 389 * @param num_keycodes Number of key codes 390 * @param same Returns number of key codes which are the same 391 */ 392static int input_check_keycodes(struct input_config *config, 393 int keycode[], int num_keycodes, int *same) 394{ 395 /* Select the 'plain' xlate table to start with */ 396 if (!config->num_tables) { 397 debug("%s: No xlate tables: cannot decode keys\n", __func__); 398 return -1; 399 } 400 401 /* sort the keycodes into the same order as the previous ones */ 402 *same = sort_array_by_ordering(keycode, num_keycodes, 403 config->prev_keycodes, config->num_prev_keycodes); 404 405 memcpy(config->prev_keycodes, keycode, num_keycodes * sizeof(int)); 406 config->num_prev_keycodes = num_keycodes; 407 408 return *same != num_keycodes; 409} 410 411/** 412 * Checks and converts a special key code into ANSI 3.64 escape sequence. 413 * 414 * @param config Input state 415 * @param keycode Key code to examine 416 * @param output_ch Buffer to place output characters into. It should 417 * be at least ANSI_CHAR_MAX bytes long, to allow for 418 * an ANSI sequence. 419 * @param max_chars Maximum number of characters to add to output_ch 420 * Return: number of characters output, if the key was converted, otherwise 0. 421 * This may be larger than max_chars, in which case the overflow 422 * characters are not output. 423 */ 424static int input_keycode_to_ansi364(struct input_config *config, 425 int keycode, char output_ch[], int max_chars) 426{ 427 const char *escape; 428 int ch_count; 429 int i; 430 431 for (i = ch_count = 0; i < ARRAY_SIZE(kbd_to_ansi364); i++) { 432 if (keycode != kbd_to_ansi364[i].kbd_scan_code) 433 continue; 434 output_ch[ch_count++] = 0x1b; 435 for (escape = kbd_to_ansi364[i].escape; *escape; escape++) { 436 if (ch_count < max_chars) 437 output_ch[ch_count] = *escape; 438 ch_count++; 439 } 440 return ch_count; 441 } 442 443 return 0; 444} 445 446/** 447 * Converts and queues a list of key codes in escaped ASCII string form 448 * Convert a list of key codes into ASCII 449 * 450 * You must call input_check_keycodes() before this. It turns the keycode 451 * list into a list of ASCII characters and sends them to the input layer. 452 * 453 * Characters which were seen last time do not generate fresh ASCII output. 454 * The output (calls to queue_ascii) may be longer than num_keycodes, if the 455 * keycode contains special keys that was encoded to longer escaped sequence. 456 * 457 * @param config Input state 458 * @param keycode List of key codes to examine 459 * @param num_keycodes Number of key codes 460 * @param output_ch Buffer to place output characters into. It should 461 * be at last ANSI_CHAR_MAX * num_keycodes, to allow for 462 * ANSI sequences. 463 * @param max_chars Maximum number of characters to add to output_ch 464 * @param same Number of key codes which are the same 465 * Return: number of characters written into output_ch, or -1 if we would 466 * exceed max_chars chars. 467 */ 468static int input_keycodes_to_ascii(struct input_config *config, 469 int keycode[], int num_keycodes, char output_ch[], 470 int max_chars, int same) 471{ 472 struct input_key_xlate *table; 473 int ch_count = 0; 474 int i; 475 476 table = &config->table[0]; 477 478 /* deal with modifiers first */ 479 for (i = 0; i < num_keycodes; i++) { 480 int key = keycode[i] & KEY_MASK; 481 482 if (key >= table->num_entries || table->xlate[key] == 0xff) { 483 table = process_modifier(config, key, 484 keycode[i] & KEY_RELEASE); 485 } 486 } 487 488 /* Start conversion by looking for the first new keycode (by same). */ 489 for (i = same; i < num_keycodes; i++) { 490 int key = keycode[i]; 491 int ch = 0xff; 492 493 /* 494 * For a normal key (with an ASCII value), add it; otherwise 495 * translate special key to escape sequence if possible. 496 */ 497 if (key < table->num_entries) { 498 ch = table->xlate[key]; 499 if ((config->flags & FLAG_CAPS_LOCK) && 500 ch >= 'a' && ch <= 'z') 501 ch -= 'a' - 'A'; 502 /* ban digit numbers if 'Num Lock' is not on */ 503 if (!(config->flags & FLAG_NUM_LOCK)) { 504 if (key >= KEY_KP7 && key <= KEY_KPDOT && 505 key != KEY_KPMINUS && key != KEY_KPPLUS) 506 ch = 0xff; 507 } 508 if (ch_count < max_chars && ch != 0xff) 509 output_ch[ch_count++] = (uchar)ch; 510 } 511 if (ch == 0xff) 512 ch_count += input_keycode_to_ansi364(config, key, 513 output_ch, max_chars); 514 } 515 516 if (ch_count > max_chars) { 517 debug("%s: Output char buffer overflow size=%d, need=%d\n", 518 __func__, max_chars, ch_count); 519 return -1; 520 } 521 522 /* ok, so return keys */ 523 return ch_count; 524} 525 526static int _input_send_keycodes(struct input_config *config, int keycode[], 527 int num_keycodes, bool do_send) 528{ 529 char ch[num_keycodes * ANSI_CHAR_MAX]; 530 int count, i, same = 0; 531 int is_repeat = 0; 532 unsigned delay_ms; 533 534 config->modifiers = 0; 535 if (!input_check_keycodes(config, keycode, num_keycodes, &same)) { 536 /* 537 * Same as last time - is it time for another repeat? 538 * TODO(sjg@chromium.org) We drop repeats here and since 539 * the caller may not call in again for a while, our 540 * auto-repeat speed is not quite correct. We should 541 * insert another character if we later realise that we 542 * have missed a repeat slot. 543 */ 544 is_repeat = config->allow_repeats || (config->repeat_rate_ms && 545 (int)get_timer(config->next_repeat_ms) >= 0); 546 if (!is_repeat) 547 return 0; 548 } 549 550 count = input_keycodes_to_ascii(config, keycode, num_keycodes, 551 ch, sizeof(ch), is_repeat ? 0 : same); 552 if (do_send) { 553 for (i = 0; i < count; i++) 554 input_queue_ascii(config, ch[i]); 555 } 556 delay_ms = is_repeat ? 557 config->repeat_rate_ms : 558 config->repeat_delay_ms; 559 560 config->next_repeat_ms = get_timer(0) + delay_ms; 561 562 return count; 563} 564 565int input_send_keycodes(struct input_config *config, int keycode[], 566 int num_keycodes) 567{ 568 return _input_send_keycodes(config, keycode, num_keycodes, true); 569} 570 571int input_add_keycode(struct input_config *config, int new_keycode, 572 bool release) 573{ 574 int keycode[INPUT_MAX_MODIFIERS + 1]; 575 int count, i; 576 577 /* Add the old keycodes which are not removed by this new one */ 578 for (i = 0, count = 0; i < config->num_prev_keycodes; i++) { 579 int code = config->prev_keycodes[i]; 580 581 if (new_keycode == code) { 582 if (release) 583 continue; 584 new_keycode = -1; 585 } 586 keycode[count++] = code; 587 } 588 589 if (!release && new_keycode != -1) 590 keycode[count++] = new_keycode; 591 debug("\ncodes for %02x/%d: ", new_keycode, release); 592 for (i = 0; i < count; i++) 593 debug("%02x ", keycode[i]); 594 debug("\n"); 595 596 /* Don't output any ASCII characters if this is a key release */ 597 return _input_send_keycodes(config, keycode, count, !release); 598} 599 600int input_add_table(struct input_config *config, int left_keycode, 601 int right_keycode, const uchar *xlate, int num_entries) 602{ 603 struct input_key_xlate *table; 604 605 if (config->num_tables == INPUT_MAX_MODIFIERS) { 606 debug("%s: Too many modifier tables\n", __func__); 607 return -1; 608 } 609 610 table = &config->table[config->num_tables++]; 611 table->left_keycode = left_keycode; 612 table->right_keycode = right_keycode; 613 table->xlate = xlate; 614 table->num_entries = num_entries; 615 616 return 0; 617} 618 619void input_set_delays(struct input_config *config, int repeat_delay_ms, 620 int repeat_rate_ms) 621{ 622 config->repeat_delay_ms = repeat_delay_ms; 623 config->repeat_rate_ms = repeat_rate_ms; 624} 625 626void input_allow_repeats(struct input_config *config, bool allow_repeats) 627{ 628 config->allow_repeats = allow_repeats; 629} 630 631int input_leds_changed(struct input_config *config) 632{ 633 if (config->leds_changed) 634 return config->leds; 635 636 return -1; 637} 638 639int input_add_tables(struct input_config *config, bool german) 640{ 641 struct kbd_entry *entry; 642 int mask; 643 int ret; 644 645 mask = german ? KBD_GERMAN : KBD_ENGLISH; 646 for (entry = kbd_entry; entry->kbd_mask; entry++) { 647 if (!(mask & entry->kbd_mask)) 648 continue; 649 ret = input_add_table(config, entry->left_keycode, 650 entry->right_keycode, entry->xlate, 651 entry->num_entries); 652 if (ret) 653 return ret; 654 } 655 656 return 0; 657} 658 659int input_init(struct input_config *config, int leds) 660{ 661 memset(config, '\0', sizeof(*config)); 662 config->leds = leds; 663 664 return 0; 665} 666 667int input_stdio_register(struct stdio_dev *dev) 668{ 669 int error; 670 671 error = stdio_register(dev); 672 673 if (!CONFIG_IS_ENABLED(ENV_SUPPORT)) 674 return 0; 675 676 if (!error) { 677 const char *cstdin; 678 679 /* check if this is the standard input device */ 680 cstdin = env_get("stdin"); 681 if (cstdin && !strcmp(cstdin, dev->name)) { 682 /* reassign the console */ 683 if (OVERWRITE_CONSOLE || 684 console_assign(stdin, dev->name)) 685 return -1; 686 } 687 } 688 689 return 0; 690} 691