| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Translate key codes into ASCII |
| * |
| * Copyright (c) 2011 The Chromium OS Authors. |
| * (C) Copyright 2004 DENX Software Engineering, Wolfgang Denk, wd@denx.de |
| */ |
| |
| #include <console.h> |
| #include <dm.h> |
| #include <env.h> |
| #include <errno.h> |
| #include <log.h> |
| #include <stdio_dev.h> |
| #include <time.h> |
| #include <input.h> |
| #ifdef CONFIG_DM_KEYBOARD |
| #include <keyboard.h> |
| #endif |
| #include <linux/input.h> |
| |
| enum { |
| /* These correspond to the lights on the keyboard */ |
| FLAG_SCROLL_LOCK = 1 << 0, |
| FLAG_NUM_LOCK = 1 << 1, |
| FLAG_CAPS_LOCK = 1 << 2, |
| |
| /* Special flag ORed with key code to indicate release */ |
| KEY_RELEASE = 1 << 15, |
| KEY_MASK = 0xfff, |
| }; |
| |
| /* |
| * These takes map key codes to ASCII. 0xff means no key, or special key. |
| * Three tables are provided - one for plain keys, one for when the shift |
| * 'modifier' key is pressed and one for when the ctrl modifier key is |
| * pressed. |
| */ |
| static const uchar kbd_plain_xlate[] = { |
| 0xff, 0x1b, '1', '2', '3', '4', '5', '6', |
| '7', '8', '9', '0', '-', '=', '\b', '\t', /* 0x00 - 0x0f */ |
| 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', |
| 'o', 'p', '[', ']', '\r', 0xff, 'a', 's', /* 0x10 - 0x1f */ |
| 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', |
| '\'', '`', 0xff, '\\', 'z', 'x', 'c', 'v', /* 0x20 - 0x2f */ |
| 'b', 'n', 'm', ',' , '.', '/', 0xff, 0xff, 0xff, |
| ' ', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x30 - 0x3f */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '7', |
| '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */ |
| '2', '3', '0', '.', 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x50 - 0x5F */ |
| '\r', 0xff, '/', '*', |
| }; |
| |
| static unsigned char kbd_shift_xlate[] = { |
| 0xff, 0x1b, '!', '@', '#', '$', '%', '^', |
| '&', '*', '(', ')', '_', '+', '\b', '\t', /* 0x00 - 0x0f */ |
| 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', |
| 'O', 'P', '{', '}', '\r', 0xff, 'A', 'S', /* 0x10 - 0x1f */ |
| 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', |
| '"', '~', 0xff, '|', 'Z', 'X', 'C', 'V', /* 0x20 - 0x2f */ |
| 'B', 'N', 'M', '<', '>', '?', 0xff, 0xff, 0xff, |
| ' ', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x30 - 0x3f */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '7', |
| '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */ |
| '2', '3', '0', '.', 0xff, 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x50 - 0x5F */ |
| '\r', 0xff, '/', '*', |
| }; |
| |
| static unsigned char kbd_ctrl_xlate[] = { |
| 0xff, 0x1b, '1', 0x00, '3', '4', '5', 0x1E, |
| '7', '8', '9', '0', 0x1F, '=', '\b', '\t', /* 0x00 - 0x0f */ |
| 0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, |
| 0x0f, 0x10, 0x1b, 0x1d, '\n', 0xff, 0x01, 0x13, /* 0x10 - 0x1f */ |
| 0x04, 0x06, 0x08, 0x09, 0x0a, 0x0b, 0x0c, ';', |
| '\'', '~', 0x00, 0x1c, 0x1a, 0x18, 0x03, 0x16, /* 0x20 - 0x2f */ |
| 0x02, 0x0e, 0x0d, '<', '>', '?', 0xff, 0xff, |
| 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x30 - 0x3f */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '7', |
| '8', '9', '-', '4', '5', '6', '+', '1', /* 0x40 - 0x4f */ |
| '2', '3', '0', '.', 0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x50 - 0x5F */ |
| '\r', 0xff, '/', '*', |
| }; |
| |
| /* |
| * German keymap. Special letters are mapped according to code page 437. |
| */ |
| static const uchar kbd_plain_xlate_german[] = { |
| 0xff, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 00-07 */ |
| '7', '8', '9', '0', 0xe1, '\'', 0x08, '\t', /* scan 08-0F */ |
| 'q', 'w', 'e', 'r', 't', 'z', 'u', 'i', /* scan 10-17 */ |
| 'o', 'p', 0x81, '+', '\r', 0xff, 'a', 's', /* scan 18-1F */ |
| 'd', 'f', 'g', 'h', 'j', 'k', 'l', 0x94, /* scan 20-27 */ |
| 0x84, '^', 0xff, '#', 'y', 'x', 'c', 'v', /* scan 28-2F */ |
| 'b', 'n', 'm', ',', '.', '-', 0xff, '*', /* scan 30-37 */ |
| ' ', ' ', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '7', /* scan 40-47 */ |
| '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */ |
| '2', '3', '0', ',', 0xff, 0xff, '<', 0xff, /* scan 50-57 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */ |
| '\r', 0xff, '/', '*', |
| }; |
| |
| static unsigned char kbd_shift_xlate_german[] = { |
| 0xff, 0x1b, '!', '"', 0x15, '$', '%', '&', /* scan 00-07 */ |
| '/', '(', ')', '=', '?', '`', 0x08, '\t', /* scan 08-0F */ |
| 'Q', 'W', 'E', 'R', 'T', 'Z', 'U', 'I', /* scan 10-17 */ |
| 'O', 'P', 0x9a, '*', '\r', 0xff, 'A', 'S', /* scan 18-1F */ |
| 'D', 'F', 'G', 'H', 'J', 'K', 'L', 0x99, /* scan 20-27 */ |
| 0x8e, 0xf8, 0xff, '\'', 'Y', 'X', 'C', 'V', /* scan 28-2F */ |
| 'B', 'N', 'M', ';', ':', '_', 0xff, '*', /* scan 30-37 */ |
| ' ', ' ', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '7', /* scan 40-47 */ |
| '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */ |
| '2', '3', '0', ',', 0xff, 0xff, '>', 0xff, /* scan 50-57 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */ |
| '\r', 0xff, '/', '*', |
| }; |
| |
| static unsigned char kbd_right_alt_xlate_german[] = { |
| 0xff, 0xff, 0xff, 0xfd, 0xff, 0xff, 0xff, 0xff, /* scan 00-07 */ |
| '{', '[', ']', '}', '\\', 0xff, 0xff, 0xff, /* scan 08-0F */ |
| '@', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 10-17 */ |
| 0xff, 0xff, 0xff, '~', 0xff, 0xff, 0xff, 0xff, /* scan 18-1F */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 20-27 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 28-2F */ |
| 0xff, 0xff, 0xe6, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 30-37 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 40-47 */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48-4F */ |
| 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '|', 0xff, /* scan 50-57 */ |
| }; |
| |
| enum kbd_mask { |
| KBD_ENGLISH = 1 << 0, |
| KBD_GERMAN = 1 << 1, |
| }; |
| |
| static struct kbd_entry { |
| int kbd_mask; /* Which languages this is for */ |
| int left_keycode; /* Left keycode to select this map */ |
| int right_keycode; /* Right keycode to select this map */ |
| const uchar *xlate; /* Ascii code for each keycode */ |
| int num_entries; /* Number of entries in xlate */ |
| } kbd_entry[] = { |
| { KBD_ENGLISH, -1, -1, |
| kbd_plain_xlate, ARRAY_SIZE(kbd_plain_xlate) }, |
| { KBD_GERMAN, -1, -1, |
| kbd_plain_xlate_german, ARRAY_SIZE(kbd_plain_xlate_german) }, |
| { KBD_ENGLISH, KEY_LEFTSHIFT, KEY_RIGHTSHIFT, |
| kbd_shift_xlate, ARRAY_SIZE(kbd_shift_xlate) }, |
| { KBD_GERMAN, KEY_LEFTSHIFT, KEY_RIGHTSHIFT, |
| kbd_shift_xlate_german, ARRAY_SIZE(kbd_shift_xlate_german) }, |
| { KBD_ENGLISH | KBD_GERMAN, KEY_LEFTCTRL, KEY_RIGHTCTRL, |
| kbd_ctrl_xlate, ARRAY_SIZE(kbd_ctrl_xlate) }, |
| { KBD_GERMAN, -1, KEY_RIGHTALT, |
| kbd_right_alt_xlate_german, |
| ARRAY_SIZE(kbd_right_alt_xlate_german) }, |
| {}, |
| }; |
| |
| /* |
| * The table contains conversions from scan key codes to ECMA-48 escape |
| * sequences. The same sequences exist in the withdrawn ANSI 3.64 standard. |
| * |
| * As all escape sequences start with 0x1b this byte has been removed. |
| * |
| * This table is incomplete in that it does not include all possible extra keys. |
| */ |
| static struct { |
| int kbd_scan_code; |
| char *escape; |
| } kbd_to_ansi364[] = { |
| { KEY_UP, "[A"}, |
| { KEY_LEFT, "[D"}, |
| { KEY_RIGHT, "[C"}, |
| { KEY_DOWN, "[B"}, |
| { KEY_F1, "OP"}, |
| { KEY_F2, "OQ"}, |
| { KEY_F3, "OR"}, |
| { KEY_F4, "OS"}, |
| { KEY_F5, "[15~"}, |
| { KEY_F6, "[17~"}, |
| { KEY_F7, "[18~"}, |
| { KEY_F8, "[19~"}, |
| { KEY_F9, "[20~"}, |
| { KEY_F10, "[21~"}, |
| }; |
| |
| /* Maximum number of output characters that an ANSI sequence expands to */ |
| #define ANSI_CHAR_MAX 5 |
| |
| static int input_queue_ascii(struct input_config *config, int ch) |
| { |
| if (config->fifo_in + 1 == INPUT_BUFFER_LEN) { |
| if (!config->fifo_out) |
| return -1; /* buffer full */ |
| else |
| config->fifo_in = 0; |
| } else { |
| if (config->fifo_in + 1 == config->fifo_out) |
| return -1; /* buffer full */ |
| config->fifo_in++; |
| } |
| debug(" {%02x} ", ch); |
| config->fifo[config->fifo_in] = (uchar)ch; |
| |
| return 0; |
| } |
| |
| int input_tstc(struct input_config *config) |
| { |
| if (config->fifo_in == config->fifo_out && config->read_keys) { |
| if (!(*config->read_keys)(config)) |
| return 0; |
| } |
| return config->fifo_in != config->fifo_out; |
| } |
| |
| int input_getc(struct input_config *config) |
| { |
| int err = 0; |
| |
| while (config->fifo_in == config->fifo_out) { |
| if (config->read_keys) |
| err = (*config->read_keys)(config); |
| if (err) |
| return -1; |
| } |
| |
| if (++config->fifo_out == INPUT_BUFFER_LEN) |
| config->fifo_out = 0; |
| |
| return config->fifo[config->fifo_out]; |
| } |
| |
| /** |
| * Process a modifier/special key press or release and decide which key |
| * translation array should be used as a result. |
| * |
| * TODO: Should keep track of modifier press/release |
| * |
| * @param config Input state |
| * @param key Key code to process |
| * @param release 0 if a press, 1 if a release |
| * Return: pointer to keycode->ascii translation table that should be used |
| */ |
| static struct input_key_xlate *process_modifier(struct input_config *config, |
| int key, int release) |
| { |
| #ifdef CONFIG_DM_KEYBOARD |
| struct udevice *dev = config->dev; |
| struct keyboard_ops *ops = keyboard_get_ops(dev); |
| #endif |
| struct input_key_xlate *table; |
| int i; |
| |
| /* Start with the main table, and see what modifiers change it */ |
| assert(config->num_tables > 0); |
| table = &config->table[0]; |
| for (i = 1; i < config->num_tables; i++) { |
| struct input_key_xlate *tab = &config->table[i]; |
| |
| if (key == tab->left_keycode || key == tab->right_keycode) |
| table = tab; |
| } |
| |
| /* Handle the lighted keys */ |
| if (!release) { |
| int flip = -1; |
| |
| switch (key) { |
| case KEY_SCROLLLOCK: |
| flip = FLAG_SCROLL_LOCK; |
| break; |
| case KEY_NUMLOCK: |
| flip = FLAG_NUM_LOCK; |
| break; |
| case KEY_CAPSLOCK: |
| flip = FLAG_CAPS_LOCK; |
| break; |
| } |
| |
| if (flip != -1) { |
| int leds = 0; |
| |
| config->flags ^= flip; |
| if (config->flags & FLAG_NUM_LOCK) |
| leds |= INPUT_LED_NUM; |
| if (config->flags & FLAG_CAPS_LOCK) |
| leds |= INPUT_LED_CAPS; |
| if (config->flags & FLAG_SCROLL_LOCK) |
| leds |= INPUT_LED_SCROLL; |
| config->leds = leds; |
| config->leds_changed = flip; |
| |
| #ifdef CONFIG_DM_KEYBOARD |
| if (ops->update_leds) { |
| if (ops->update_leds(dev, config->leds)) |
| debug("Update keyboard's LED failed\n"); |
| } |
| #endif |
| } |
| } |
| |
| return table; |
| } |
| |
| /** |
| * Search an int array for a key value |
| * |
| * @param array Array to search |
| * @param count Number of elements in array |
| * @param key Key value to find |
| * Return: element where value was first found, -1 if none |
| */ |
| static int array_search(int *array, int count, int key) |
| { |
| int i; |
| |
| for (i = 0; i < count; i++) { |
| if (array[i] == key) |
| return i; |
| } |
| |
| return -1; |
| } |
| |
| /** |
| * Sort an array so that those elements that exist in the ordering are |
| * first in the array, and in the same order as the ordering. The algorithm |
| * is O(count * ocount) and designed for small arrays. |
| * |
| * TODO: Move this to common / lib? |
| * |
| * @param dest Array with elements to sort, also destination array |
| * @param count Number of elements to sort |
| * @param order Array containing ordering elements |
| * @param ocount Number of ordering elements |
| * Return: number of elements in dest that are in order (these will be at the |
| * start of dest). |
| */ |
| static int sort_array_by_ordering(int *dest, int count, int *order, |
| int ocount) |
| { |
| int temp[count]; |
| int dest_count; |
| int same; /* number of elements which are the same */ |
| int i; |
| |
| /* setup output items, copy items to be sorted into our temp area */ |
| memcpy(temp, dest, count * sizeof(*dest)); |
| dest_count = 0; |
| |
| /* work through the ordering, move over the elements we agree on */ |
| for (i = 0; i < ocount; i++) { |
| if (array_search(temp, count, order[i]) != -1) |
| dest[dest_count++] = order[i]; |
| } |
| same = dest_count; |
| |
| /* now move over the elements that are not in the ordering */ |
| for (i = 0; i < count; i++) { |
| if (array_search(order, ocount, temp[i]) == -1) |
| dest[dest_count++] = temp[i]; |
| } |
| assert(dest_count == count); |
| return same; |
| } |
| |
| /** |
| * Check a list of key codes against the previous key scan |
| * |
| * Given a list of new key codes, we check how many of these are the same |
| * as last time. |
| * |
| * @param config Input state |
| * @param keycode List of key codes to examine |
| * @param num_keycodes Number of key codes |
| * @param same Returns number of key codes which are the same |
| */ |
| static int input_check_keycodes(struct input_config *config, |
| int keycode[], int num_keycodes, int *same) |
| { |
| /* Select the 'plain' xlate table to start with */ |
| if (!config->num_tables) { |
| debug("%s: No xlate tables: cannot decode keys\n", __func__); |
| return -1; |
| } |
| |
| /* sort the keycodes into the same order as the previous ones */ |
| *same = sort_array_by_ordering(keycode, num_keycodes, |
| config->prev_keycodes, config->num_prev_keycodes); |
| |
| memcpy(config->prev_keycodes, keycode, num_keycodes * sizeof(int)); |
| config->num_prev_keycodes = num_keycodes; |
| |
| return *same != num_keycodes; |
| } |
| |
| /** |
| * Checks and converts a special key code into ANSI 3.64 escape sequence. |
| * |
| * @param config Input state |
| * @param keycode Key code to examine |
| * @param output_ch Buffer to place output characters into. It should |
| * be at least ANSI_CHAR_MAX bytes long, to allow for |
| * an ANSI sequence. |
| * @param max_chars Maximum number of characters to add to output_ch |
| * Return: number of characters output, if the key was converted, otherwise 0. |
| * This may be larger than max_chars, in which case the overflow |
| * characters are not output. |
| */ |
| static int input_keycode_to_ansi364(struct input_config *config, |
| int keycode, char output_ch[], int max_chars) |
| { |
| const char *escape; |
| int ch_count; |
| int i; |
| |
| for (i = ch_count = 0; i < ARRAY_SIZE(kbd_to_ansi364); i++) { |
| if (keycode != kbd_to_ansi364[i].kbd_scan_code) |
| continue; |
| output_ch[ch_count++] = 0x1b; |
| for (escape = kbd_to_ansi364[i].escape; *escape; escape++) { |
| if (ch_count < max_chars) |
| output_ch[ch_count] = *escape; |
| ch_count++; |
| } |
| return ch_count; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * Converts and queues a list of key codes in escaped ASCII string form |
| * Convert a list of key codes into ASCII |
| * |
| * You must call input_check_keycodes() before this. It turns the keycode |
| * list into a list of ASCII characters and sends them to the input layer. |
| * |
| * Characters which were seen last time do not generate fresh ASCII output. |
| * The output (calls to queue_ascii) may be longer than num_keycodes, if the |
| * keycode contains special keys that was encoded to longer escaped sequence. |
| * |
| * @param config Input state |
| * @param keycode List of key codes to examine |
| * @param num_keycodes Number of key codes |
| * @param output_ch Buffer to place output characters into. It should |
| * be at last ANSI_CHAR_MAX * num_keycodes, to allow for |
| * ANSI sequences. |
| * @param max_chars Maximum number of characters to add to output_ch |
| * @param same Number of key codes which are the same |
| * Return: number of characters written into output_ch, or -1 if we would |
| * exceed max_chars chars. |
| */ |
| static int input_keycodes_to_ascii(struct input_config *config, |
| int keycode[], int num_keycodes, char output_ch[], |
| int max_chars, int same) |
| { |
| struct input_key_xlate *table; |
| int ch_count = 0; |
| int i; |
| |
| table = &config->table[0]; |
| |
| /* deal with modifiers first */ |
| for (i = 0; i < num_keycodes; i++) { |
| int key = keycode[i] & KEY_MASK; |
| |
| if (key >= table->num_entries || table->xlate[key] == 0xff) { |
| table = process_modifier(config, key, |
| keycode[i] & KEY_RELEASE); |
| } |
| } |
| |
| /* Start conversion by looking for the first new keycode (by same). */ |
| for (i = same; i < num_keycodes; i++) { |
| int key = keycode[i]; |
| int ch = 0xff; |
| |
| /* |
| * For a normal key (with an ASCII value), add it; otherwise |
| * translate special key to escape sequence if possible. |
| */ |
| if (key < table->num_entries) { |
| ch = table->xlate[key]; |
| if ((config->flags & FLAG_CAPS_LOCK) && |
| ch >= 'a' && ch <= 'z') |
| ch -= 'a' - 'A'; |
| /* ban digit numbers if 'Num Lock' is not on */ |
| if (!(config->flags & FLAG_NUM_LOCK)) { |
| if (key >= KEY_KP7 && key <= KEY_KPDOT && |
| key != KEY_KPMINUS && key != KEY_KPPLUS) |
| ch = 0xff; |
| } |
| if (ch_count < max_chars && ch != 0xff) |
| output_ch[ch_count++] = (uchar)ch; |
| } |
| if (ch == 0xff) |
| ch_count += input_keycode_to_ansi364(config, key, |
| output_ch, max_chars); |
| } |
| |
| if (ch_count > max_chars) { |
| debug("%s: Output char buffer overflow size=%d, need=%d\n", |
| __func__, max_chars, ch_count); |
| return -1; |
| } |
| |
| /* ok, so return keys */ |
| return ch_count; |
| } |
| |
| static int _input_send_keycodes(struct input_config *config, int keycode[], |
| int num_keycodes, bool do_send) |
| { |
| char ch[num_keycodes * ANSI_CHAR_MAX]; |
| int count, i, same = 0; |
| int is_repeat = 0; |
| unsigned delay_ms; |
| |
| config->modifiers = 0; |
| if (!input_check_keycodes(config, keycode, num_keycodes, &same)) { |
| /* |
| * Same as last time - is it time for another repeat? |
| * TODO(sjg@chromium.org) We drop repeats here and since |
| * the caller may not call in again for a while, our |
| * auto-repeat speed is not quite correct. We should |
| * insert another character if we later realise that we |
| * have missed a repeat slot. |
| */ |
| is_repeat = config->allow_repeats || (config->repeat_rate_ms && |
| (int)get_timer(config->next_repeat_ms) >= 0); |
| if (!is_repeat) |
| return 0; |
| } |
| |
| count = input_keycodes_to_ascii(config, keycode, num_keycodes, |
| ch, sizeof(ch), is_repeat ? 0 : same); |
| if (do_send) { |
| for (i = 0; i < count; i++) |
| input_queue_ascii(config, ch[i]); |
| } |
| delay_ms = is_repeat ? |
| config->repeat_rate_ms : |
| config->repeat_delay_ms; |
| |
| config->next_repeat_ms = get_timer(0) + delay_ms; |
| |
| return count; |
| } |
| |
| int input_send_keycodes(struct input_config *config, int keycode[], |
| int num_keycodes) |
| { |
| return _input_send_keycodes(config, keycode, num_keycodes, true); |
| } |
| |
| int input_add_keycode(struct input_config *config, int new_keycode, |
| bool release) |
| { |
| int keycode[INPUT_MAX_MODIFIERS + 1]; |
| int count, i; |
| |
| /* Add the old keycodes which are not removed by this new one */ |
| for (i = 0, count = 0; i < config->num_prev_keycodes; i++) { |
| int code = config->prev_keycodes[i]; |
| |
| if (new_keycode == code) { |
| if (release) |
| continue; |
| new_keycode = -1; |
| } |
| keycode[count++] = code; |
| } |
| |
| if (!release && new_keycode != -1) |
| keycode[count++] = new_keycode; |
| debug("\ncodes for %02x/%d: ", new_keycode, release); |
| for (i = 0; i < count; i++) |
| debug("%02x ", keycode[i]); |
| debug("\n"); |
| |
| /* Don't output any ASCII characters if this is a key release */ |
| return _input_send_keycodes(config, keycode, count, !release); |
| } |
| |
| int input_add_table(struct input_config *config, int left_keycode, |
| int right_keycode, const uchar *xlate, int num_entries) |
| { |
| struct input_key_xlate *table; |
| |
| if (config->num_tables == INPUT_MAX_MODIFIERS) { |
| debug("%s: Too many modifier tables\n", __func__); |
| return -1; |
| } |
| |
| table = &config->table[config->num_tables++]; |
| table->left_keycode = left_keycode; |
| table->right_keycode = right_keycode; |
| table->xlate = xlate; |
| table->num_entries = num_entries; |
| |
| return 0; |
| } |
| |
| void input_set_delays(struct input_config *config, int repeat_delay_ms, |
| int repeat_rate_ms) |
| { |
| config->repeat_delay_ms = repeat_delay_ms; |
| config->repeat_rate_ms = repeat_rate_ms; |
| } |
| |
| void input_allow_repeats(struct input_config *config, bool allow_repeats) |
| { |
| config->allow_repeats = allow_repeats; |
| } |
| |
| int input_leds_changed(struct input_config *config) |
| { |
| if (config->leds_changed) |
| return config->leds; |
| |
| return -1; |
| } |
| |
| int input_add_tables(struct input_config *config, bool german) |
| { |
| struct kbd_entry *entry; |
| int mask; |
| int ret; |
| |
| mask = german ? KBD_GERMAN : KBD_ENGLISH; |
| for (entry = kbd_entry; entry->kbd_mask; entry++) { |
| if (!(mask & entry->kbd_mask)) |
| continue; |
| ret = input_add_table(config, entry->left_keycode, |
| entry->right_keycode, entry->xlate, |
| entry->num_entries); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| int input_init(struct input_config *config, int leds) |
| { |
| memset(config, '\0', sizeof(*config)); |
| config->leds = leds; |
| |
| return 0; |
| } |
| |
| int input_stdio_register(struct stdio_dev *dev) |
| { |
| int error; |
| |
| error = stdio_register(dev); |
| |
| if (!CONFIG_IS_ENABLED(ENV_SUPPORT)) |
| return 0; |
| |
| if (!error) { |
| const char *cstdin; |
| |
| /* check if this is the standard input device */ |
| cstdin = env_get("stdin"); |
| if (cstdin && !strcmp(cstdin, dev->name)) { |
| /* reassign the console */ |
| if (OVERWRITE_CONSOLE || |
| console_assign(stdin, dev->name)) |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |