source: mainline/kernel/genarch/src/kbrd/kbrd.c@ a0e1b48

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since a0e1b48 was b6f2ebc, checked in by Martin Decky <martin@…>, 16 years ago

wire keyboard/serial module and device drivers in a more obvious way
(first a device driver is initialized and then it is connected to the generic module)
  • Property mode set to 100644
File size: 5.0 KB
Line 
1/*
2 * Copyright (c) 2009 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup genarch
30 * @{
31 */
32/**
33 * @file
34 * @brief Keyboard processing.
35 */
36
37#include <genarch/kbrd/kbrd.h>
38#include <genarch/kbrd/scanc.h>
39
40#ifdef CONFIG_PC_KBD
41#include <genarch/kbrd/scanc_pc.h>
42#endif
43
44#ifdef CONFIG_SUN_KBD
45#include <genarch/kbrd/scanc_sun.h>
46#endif
47
48#include <synch/spinlock.h>
49#include <console/chardev.h>
50#include <console/console.h>
51#include <proc/thread.h>
52#include <arch.h>
53#include <macros.h>
54
55#ifdef CONFIG_SUN_KBD
56 #define IGNORE_CODE 0x7f
57#endif
58
59#define KEY_RELEASE 0x80
60
61#define PRESSED_SHIFT (1 << 0)
62#define PRESSED_CAPSLOCK (1 << 1)
63#define LOCKED_CAPSLOCK (1 << 0)
64
65static indev_t kbrdout;
66
67indev_operations_t kbrdout_ops = {
68 .poll = NULL
69};
70
71SPINLOCK_INITIALIZE(keylock); /**< keylock protects keyflags and lockflags. */
72static volatile int keyflags; /**< Tracking of multiple keypresses. */
73static volatile int lockflags; /**< Tracking of multiple keys lockings. */
74
75static void key_released(uint8_t);
76static void key_pressed(uint8_t);
77
78static void kkbrd(void *arg)
79{
80 indev_t *in = (indev_t *) arg;
81
82 while (true) {
83 uint8_t sc = _getc(in);
84
85#ifdef CONFIG_SUN_KBD
86 if (sc == IGNORE_CODE)
87 continue;
88#endif
89
90 if (sc & KEY_RELEASE)
91 key_released(sc ^ KEY_RELEASE);
92 else
93 key_pressed(sc);
94 }
95}
96
97void kbrd_init(indev_t *devin)
98{
99 indev_initialize("kbrd", &kbrdout, &kbrdout_ops);
100 thread_t *thread
101 = thread_create(kkbrd, devin, TASK, 0, "kkbrd", false);
102
103 if (thread) {
104 stdin = &kbrdout;
105 thread_ready(thread);
106 }
107}
108
109/** Process release of key.
110 *
111 * @param sc Scancode of the key being released.
112 */
113void key_released(uint8_t sc)
114{
115 spinlock_lock(&keylock);
116 switch (sc) {
117 case SC_LSHIFT:
118 case SC_RSHIFT:
119 keyflags &= ~PRESSED_SHIFT;
120 break;
121 case SC_CAPSLOCK:
122 keyflags &= ~PRESSED_CAPSLOCK;
123 if (lockflags & LOCKED_CAPSLOCK)
124 lockflags &= ~LOCKED_CAPSLOCK;
125 else
126 lockflags |= LOCKED_CAPSLOCK;
127 break;
128 default:
129 break;
130 }
131 spinlock_unlock(&keylock);
132}
133
134/** Process keypress.
135 *
136 * @param sc Scancode of the key being pressed.
137 */
138void key_pressed(uint8_t sc)
139{
140 char *map = sc_primary_map;
141 char ascii = sc_primary_map[sc];
142 bool shift, capslock;
143 bool letter = false;
144
145 spinlock_lock(&keylock);
146 switch (sc) {
147 case SC_LSHIFT:
148 case SC_RSHIFT:
149 keyflags |= PRESSED_SHIFT;
150 break;
151 case SC_CAPSLOCK:
152 keyflags |= PRESSED_CAPSLOCK;
153 break;
154 case SC_SPEC_ESCAPE:
155 break;
156 case SC_LEFTARR:
157 indev_push_character(stdin, 0x1b);
158 indev_push_character(stdin, 0x5b);
159 indev_push_character(stdin, 0x44);
160 break;
161 case SC_RIGHTARR:
162 indev_push_character(stdin, 0x1b);
163 indev_push_character(stdin, 0x5b);
164 indev_push_character(stdin, 0x43);
165 break;
166 case SC_UPARR:
167 indev_push_character(stdin, 0x1b);
168 indev_push_character(stdin, 0x5b);
169 indev_push_character(stdin, 0x41);
170 break;
171 case SC_DOWNARR:
172 indev_push_character(stdin, 0x1b);
173 indev_push_character(stdin, 0x5b);
174 indev_push_character(stdin, 0x42);
175 break;
176 case SC_HOME:
177 indev_push_character(stdin, 0x1b);
178 indev_push_character(stdin, 0x4f);
179 indev_push_character(stdin, 0x48);
180 break;
181 case SC_END:
182 indev_push_character(stdin, 0x1b);
183 indev_push_character(stdin, 0x4f);
184 indev_push_character(stdin, 0x46);
185 break;
186 case SC_DELETE:
187 indev_push_character(stdin, 0x1b);
188 indev_push_character(stdin, 0x5b);
189 indev_push_character(stdin, 0x33);
190 indev_push_character(stdin, 0x7e);
191 break;
192 default:
193 letter = islower(ascii);
194 capslock = (keyflags & PRESSED_CAPSLOCK) ||
195 (lockflags & LOCKED_CAPSLOCK);
196 shift = keyflags & PRESSED_SHIFT;
197 if (letter && capslock)
198 shift = !shift;
199 if (shift)
200 map = sc_secondary_map;
201 indev_push_character(stdin, map[sc]);
202 break;
203 }
204 spinlock_unlock(&keylock);
205}
206
207/** @}
208 */
Note: See TracBrowser for help on using the repository browser.