| 1 | /*
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| 2 | * Copyright (c) 2001-2004 Jakub Jermar
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| 3 | * Copyright (c) 2006 Josef Cejka
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * - Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * - Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * - The name of the author may not be used to endorse or promote products
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| 16 | * derived from this software without specific prior written permission.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 28 | */
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| 29 |
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| 30 | /** @addtogroup kbd
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| 31 | * @brief Handling of keyboard IRQ notifications for several architectures.
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| 32 | * @ingroup kbd
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| 33 | * @{
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| 34 | */
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| 35 | /** @file
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| 36 | */
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| 37 |
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| 38 | #include <key_buffer.h>
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| 39 | #include <arch/scanc.h>
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| 40 | #include <genarch/scanc.h>
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| 41 | #include <genarch/kbd.h>
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| 42 | #include <libc.h>
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| 43 |
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| 44 | #define PRESSED_SHIFT (1<<0)
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| 45 | #define PRESSED_CAPSLOCK (1<<1)
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| 46 | #define LOCKED_CAPSLOCK (1<<0)
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| 47 |
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| 48 | static volatile int keyflags; /**< Tracking of multiple keypresses. */
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| 49 | static volatile int lockflags; /**< Tracking of multiple keys lockings. */
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| 50 |
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| 51 | void key_released(keybuffer_t *keybuffer, unsigned char key)
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| 52 | {
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| 53 | switch (key) {
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| 54 | case SC_LSHIFT:
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| 55 | case SC_RSHIFT:
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| 56 | keyflags &= ~PRESSED_SHIFT;
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| 57 | break;
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| 58 | case SC_CAPSLOCK:
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| 59 | keyflags &= ~PRESSED_CAPSLOCK;
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| 60 | if (lockflags & LOCKED_CAPSLOCK)
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| 61 | lockflags &= ~LOCKED_CAPSLOCK;
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| 62 | else
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| 63 | lockflags |= LOCKED_CAPSLOCK;
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| 64 | break;
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| 65 | default:
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| 66 | break;
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| 67 | }
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| 68 | }
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| 69 |
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| 70 | void key_pressed(keybuffer_t *keybuffer, unsigned char key)
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| 71 | {
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| 72 | int *map = sc_primary_map;
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| 73 | int ascii = sc_primary_map[key];
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| 74 | int shift, capslock;
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| 75 | int letter = 0;
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| 76 | kbd_event_t ev;
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| 77 |
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| 78 | static int esc_count = 0;
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| 79 |
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| 80 | if (key == SC_ESC) {
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| 81 | esc_count++;
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| 82 | if (esc_count == 3)
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| 83 | __SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
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| 84 | } else {
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| 85 | esc_count = 0;
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| 86 | }
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| 87 |
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| 88 | switch (key) {
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| 89 | case SC_LSHIFT:
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| 90 | case SC_RSHIFT:
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| 91 | keyflags |= PRESSED_SHIFT;
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| 92 | break;
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| 93 | case SC_CAPSLOCK:
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| 94 | keyflags |= PRESSED_CAPSLOCK;
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| 95 | break;
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| 96 | case SC_SPEC_ESCAPE:
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| 97 | break;
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| 98 | default:
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| 99 | letter = ((ascii >= 'a') && (ascii <= 'z'));
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| 100 | capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
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| 101 | shift = keyflags & PRESSED_SHIFT;
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| 102 | if (letter && capslock)
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| 103 | shift = !shift;
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| 104 | if (shift)
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| 105 | map = sc_secondary_map;
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| 106 | if (map[key] != SPECIAL) {
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| 107 | ev.key = map[key];
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| 108 | ev.mods = 0;
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| 109 | ev.c = map[key];
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| 110 | keybuffer_push(keybuffer, &ev);
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| 111 | }
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| 112 | break;
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| 113 | }
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| 114 | }
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| 115 |
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| 116 | /**
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| 117 | * @}
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| 118 | */
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