2 * (C) Copyright 2002 ELTEC Elektronik AG
3 * Frank Gottschling <fgottschling@eltec.de>
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
24 /* i8042.c - Intel 8042 keyboard driver routines */
30 #ifdef CONFIG_I8042_KBD
32 #ifdef CONFIG_USE_CPCIDVI
33 extern u8 gt_cpcidvi_in8(u32 offset);
34 extern void gt_cpcidvi_out8(u32 offset, u8 data);
36 #define in8(a) gt_cpcidvi_in8(a)
37 #define out8(a, b) gt_cpcidvi_out8(a,b)
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;
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 */
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);
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 */
91 static unsigned char kbd_key_map [2][5][144] =
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 */
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 */
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 */
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 */
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 */
195 { /* german keyboard */
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 */
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 */
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 */
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 */
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 */
299 static unsigned char ext_key_map [] =
301 0x1c, /* keypad enter */
302 0x1d, /* right control */
303 0x35, /* keypad slash */
304 0x37, /* print screen */
305 0x38, /* right alt */
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 */
320 /*******************************************************************************
322 * i8042_kbd_init - reset keyboard and init state flags
324 int i8042_kbd_init (void)
329 #ifdef CONFIG_USE_CPCIDVI
330 if ((penv = getenv ("console")) != NULL) {
331 if (strncmp (penv, "serial", 7) == 0) {
336 /* Init keyboard device (default US layout) */
338 if ((penv = getenv ("keymap")) != NULL)
340 if (strncmp (penv, "de", 3) == 0)
344 for (try = 0; try < KBD_RESET_TRIES; try++)
346 if (kbd_reset() == 0)
348 kbd_mapping = keymap;
359 /*******************************************************************************
361 * i8042_tstc - test if keyboard input is available
362 * option: cursor blinking if called in a loop
364 int i8042_tstc (void)
366 unsigned char scan_code = 0;
368 #ifdef CONFIG_CONSOLE_CURSOR
369 if (--blinkCount == 0)
372 console_cursor (cursor_state);
373 blinkCount = CFG_CONSOLE_BLINK_COUNT;
378 if ((in8 (I8042_STATUS_REG) & 0x01) == 0)
382 scan_code = in8 (I8042_DATA_REG);
383 if (scan_code == 0xfa)
386 kbd_conv_char(scan_code);
395 /*******************************************************************************
397 * i8042_getc - wait till keyboard input is available
398 * option: turn on/off cursor while waiting
400 int i8042_getc (void)
403 unsigned char scan_code;
405 while (kbd_input == -1)
407 while ((in8 (I8042_STATUS_REG) & 0x01) == 0)
409 #ifdef CONFIG_CONSOLE_CURSOR
413 console_cursor (cursor_state);
414 blinkCount = CFG_CONSOLE_BLINK_COUNT;
420 scan_code = in8 (I8042_DATA_REG);
422 if (scan_code != 0xfa)
423 kbd_conv_char (scan_code);
431 /******************************************************************************/
433 static void kbd_conv_char (unsigned char scan_code)
435 if (scan_code == 0xe0)
441 /* if high bit of scan_code, set break flag */
442 if (scan_code & 0x80)
447 if ((scan_code == 0xe1) || (kbd_flags & E1))
449 if (scan_code == 0xe1)
451 kbd_flags ^= BRK; /* reset the break flag */
452 kbd_flags ^= E1; /* bitwise EXOR with E1 flag */
464 for (i=0; ext_key_map[i]; i++)
466 if (ext_key_map[i] == scan_code)
468 scan_code = 0x80 + i;
477 switch (kbd_fct_map [scan_code])
479 case AS: kbd_normal (scan_code);
481 case SH: kbd_shift (scan_code);
483 case CN: kbd_ctrl (scan_code);
485 case NM: kbd_num (scan_code);
487 case CP: kbd_caps (scan_code);
489 case ST: kbd_scroll (scan_code);
491 case AK: kbd_alt (scan_code);
498 /******************************************************************************/
500 static void kbd_normal (unsigned char scan_code)
504 if ((kbd_flags & BRK) == NORMAL)
506 chr = kbd_key_map [kbd_mapping][kbd_state][scan_code];
507 if ((chr == 0xff) || (chr == 0x00))
512 /* if caps lock convert upper to lower */
513 if (((kbd_flags & CAPS) == CAPS) && (chr >= 'a' && chr <= 'z'))
522 /******************************************************************************/
524 static void kbd_shift (unsigned char scan_code)
526 if ((kbd_flags & BRK) == BRK)
529 kbd_flags &= (~SHIFT);
539 /******************************************************************************/
541 static void kbd_ctrl (unsigned char scan_code)
543 if ((kbd_flags & BRK) == BRK)
546 kbd_flags &= (~CTRL);
556 /******************************************************************************/
558 static void kbd_caps (unsigned char scan_code)
560 if ((kbd_flags & BRK) == NORMAL)
563 kbd_led_set (); /* update keyboard LED */
568 /******************************************************************************/
570 static void kbd_num (unsigned char scan_code)
572 if ((kbd_flags & BRK) == NORMAL)
575 kbd_state = (kbd_flags & NUM) ? AS : NM;
576 kbd_led_set (); /* update keyboard LED */
581 /******************************************************************************/
583 static void kbd_scroll (unsigned char scan_code)
585 if ((kbd_flags & BRK) == NORMAL)
588 kbd_led_set (); /* update keyboard LED */
596 /******************************************************************************/
598 static void kbd_alt (unsigned char scan_code)
600 if ((kbd_flags & BRK) == BRK)
613 /******************************************************************************/
615 static void kbd_led_set (void)
618 out8 (I8042_DATA_REG, 0xed); /* SET LED command */
620 out8 (I8042_DATA_REG, (kbd_flags & 0x7)); /* LED bits only */
624 /******************************************************************************/
626 static int kbd_input_empty (void)
628 int kbdTimeout = KBD_TIMEOUT;
630 /* wait for input buf empty */
631 while ((in8 (I8042_STATUS_REG) & 0x02) && kbdTimeout--)
637 /******************************************************************************/
639 static int kbd_reset (void)
641 if (kbd_input_empty() == 0)
644 out8 (I8042_DATA_REG, 0xff);
648 if (kbd_input_empty() == 0)
651 #ifdef CONFIG_USE_CPCIDVI
652 out8 (I8042_COMMAND_REG, 0x60);
654 out8 (I8042_DATA_REG, 0x60);
657 if (kbd_input_empty() == 0)
660 out8 (I8042_DATA_REG, 0x45);
663 if (kbd_input_empty() == 0)
666 out8 (I8042_COMMAND_REG, 0xae);
668 if (kbd_input_empty() == 0)
674 #endif /* CONFIG_I8042_KBD */