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input: Provide a board specific mechanism to decide whether to skip i8042 init
[people/ms/u-boot.git] / drivers / input / i8042.c
CommitLineData
c609719b
WD		 1/*
2 * (C) Copyright 2002 ELTEC Elektronik AG
3 * Frank Gottschling <fgottschling@eltec.de>
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
bfc81252 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
c609719b
WD		 16 * GNU General Public License for more details.
17 *
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,
21 * MA 02111-1307 USA
22 */
23
24/* i8042.c - Intel 8042 keyboard driver routines */
25
26/* includes */
27
28#include <common.h>
48edb304 29#include <linux/compiler.h>
c609719b 30
a7b9fb91 31#ifdef CONFIG_USE_CPCIDVI
dd4a5b22 32extern u8 gt_cpcidvi_in8(u32 offset);
a7b9fb91
SR		 33extern void gt_cpcidvi_out8(u32 offset, u8 data);
34
bfc81252 35#define in8(a) gt_cpcidvi_in8(a)
dd4a5b22 36#define out8(a, b) gt_cpcidvi_out8(a, b)
a7b9fb91
SR		 37#endif
38
c609719b
WD		 39#include <i8042.h>
40
41/* defines */
42
43#ifdef CONFIG_CONSOLE_CURSOR
dd4a5b22 44extern void console_cursor(int state);
6d0f6bcf 45static int blinkCount = CONFIG_SYS_CONSOLE_BLINK_COUNT;
dd4a5b22 46static int cursor_state;
c609719b
WD		 47#endif
48
49/* locals */
50
bfc81252
WD		 51static int kbd_input = -1; /* no input yet */
52static int kbd_mapping = KBD_US; /* default US keyboard */
53static int kbd_flags = NORMAL; /* after reset */
dd4a5b22
GB		 54static int kbd_state; /* unshift code */
55
56static void kbd_conv_char(unsigned char scan_code);
57static void kbd_led_set(void);
58static void kbd_normal(unsigned char scan_code);
59static void kbd_shift(unsigned char scan_code);
60static void kbd_ctrl(unsigned char scan_code);
61static void kbd_num(unsigned char scan_code);
62static void kbd_caps(unsigned char scan_code);
63static void kbd_scroll(unsigned char scan_code);
64static void kbd_alt(unsigned char scan_code);
65static int kbd_input_empty(void);
66static int kbd_reset(void);
67
68static unsigned char kbd_fct_map[144] = {
69 /* kbd_fct_map table for scan code */
70 0, AS, AS, AS, AS, AS, AS, AS, /* scan 0- 7 */
71 AS, AS, AS, AS, AS, AS, AS, AS, /* scan 8- F */
72 AS, AS, AS, AS, AS, AS, AS, AS, /* scan 10-17 */
73 AS, AS, AS, AS, AS, CN, AS, AS, /* scan 18-1F */
74 AS, AS, AS, AS, AS, AS, AS, AS, /* scan 20-27 */
75 AS, AS, SH, AS, AS, AS, AS, AS, /* scan 28-2F */
76 AS, AS, AS, AS, AS, AS, SH, AS, /* scan 30-37 */
77 AS, AS, CP, 0, 0, 0, 0, 0, /* scan 38-3F */
78 0, 0, 0, 0, 0, NM, ST, ES, /* scan 40-47 */
79 ES, ES, ES, ES, ES, ES, ES, ES, /* scan 48-4F */
80 ES, ES, ES, ES, 0, 0, AS, 0, /* scan 50-57 */
81 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
82 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
83 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
84 AS, 0, 0, AS, 0, 0, AS, 0, /* scan 70-77 */
85 0, AS, 0, 0, 0, AS, 0, 0, /* scan 78-7F */
86 AS, CN, AS, AS, AK, ST, EX, EX, /* enhanced */
87 AS, EX, EX, AS, EX, AS, EX, EX /* enhanced */
88 };
89
90static unsigned char kbd_key_map[2][5][144] = {
91 { /* US keyboard */
92 { /* unshift code */
93 0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */
94 '7', '8', '9', '0', '-', '=', 0x08, '\t', /* scan 8- F */
95 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', /* scan 10-17 */
96 'o', 'p', '[', ']', '\r', CN, 'a', 's', /* scan 18-1F */
97 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', /* scan 20-27 */
98 '\'', '`', SH, '\\', 'z', 'x', 'c', 'v', /* scan 28-2F */
99 'b', 'n', 'm', ',', '.', '/', SH, '*', /* scan 30-37 */
100 ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
101 0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */
102 '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */
103 '2', '3', '0', '.', 0, 0, 0, 0, /* scan 50-57 */
104 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
105 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
106 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
107 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
108 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
109 '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
110 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
111 },
112 { /* shift code */
113 0, 0x1b, '!', '@', '#', '$', '%', '^', /* scan 0- 7 */
114 '&', '*', '(', ')', '_', '+', 0x08, '\t', /* scan 8- F */
115 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', /* scan 10-17 */
116 'O', 'P', '{', '}', '\r', CN, 'A', 'S', /* scan 18-1F */
117 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', /* scan 20-27 */
118 '"', '~', SH, '|', 'Z', 'X', 'C', 'V', /* scan 28-2F */
119 'B', 'N', 'M', '<', '>', '?', SH, '*', /* scan 30-37 */
120 ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
121 0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */
122 '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */
123 '2', '3', '0', '.', 0, 0, 0, 0, /* scan 50-57 */
124 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
125 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
126 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
127 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
128 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
129 '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
130 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
131 },
132 { /* control code */
133 0xff, 0x1b, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, /* scan 0- 7 */
134 0x1e, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, '\t', /* scan 8- F */
135 0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, /* scan 10-17 */
136 0x0f, 0x10, 0x1b, 0x1d, '\r', CN, 0x01, 0x13, /* scan 18-1F */
137 0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0xff, /* scan 20-27 */
138 0xff, 0x1c, SH, 0xff, 0x1a, 0x18, 0x03, 0x16, /* scan 28-2F */
139 0x02, 0x0e, 0x0d, 0xff, 0xff, 0xff, SH, 0xff, /* scan 30-37 */
140 0xff, 0xff, CP, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */
141 0xff, 0xff, 0xff, 0xff, 0xff, NM, ST, 0xff, /* scan 40-47 */
142 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48-4F */
143 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50-57 */
144 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */
145 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */
146 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */
147 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */
148 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */
149 '\r', CN, '/', '*', ' ', ST, 0xff, 0xff, /* extended */
150 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */
151 },
152 { /* non numeric code */
153 0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */
154 '7', '8', '9', '0', '-', '=', 0x08, '\t', /* scan 8- F */
155 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', /* scan 10-17 */
156 'o', 'p', '[', ']', '\r', CN, 'a', 's', /* scan 18-1F */
157 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', /* scan 20-27 */
158 '\'', '`', SH, '\\', 'z', 'x', 'c', 'v', /* scan 28-2F */
159 'b', 'n', 'm', ',', '.', '/', SH, '*', /* scan 30-37 */
160 ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
161 0, 0, 0, 0, 0, NM, ST, 'w', /* scan 40-47 */
162 'x', 'y', 'l', 't', 'u', 'v', 'm', 'q', /* scan 48-4F */
163 'r', 's', 'p', 'n', 0, 0, 0, 0, /* scan 50-57 */
164 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
165 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
166 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
167 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
168 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
169 '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
170 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
171 },
172 { /* right alt mode - not used in US keyboard */
173 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 0 - 7 */
174 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 8 - F */
175 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 10 -17 */
176 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 18 -1F */
177 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 20 -27 */
178 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 28 -2F */
179 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 30 -37 */
180 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38 -3F */
181 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 40 -47 */
182 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48 -4F */
183 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50 -57 */
184 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58 -5F */
185 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60 -67 */
186 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68 -6F */
187 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70 -77 */
188 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78 -7F */
189 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* extended */
190 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */
191 }
192 },
193 { /* german keyboard */
194 { /* unshift code */
195 0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */
196 '7', '8', '9', '0', 0xe1, '\'', 0x08, '\t', /* scan 8- F */
197 'q', 'w', 'e', 'r', 't', 'z', 'u', 'i', /* scan 10-17 */
198 'o', 'p', 0x81, '+', '\r', CN, 'a', 's', /* scan 18-1F */
199 'd', 'f', 'g', 'h', 'j', 'k', 'l', 0x94, /* scan 20-27 */
200 0x84, '^', SH, '#', 'y', 'x', 'c', 'v', /* scan 28-2F */
201 'b', 'n', 'm', ',', '.', '-', SH, '*', /* scan 30-37 */
202 ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
203 0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */
204 '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */
205 '2', '3', '0', ',', 0, 0, '<', 0, /* scan 50-57 */
206 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
207 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
208 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
209 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
210 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
211 '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
212 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
213 },
214 { /* shift code */
215 0, 0x1b, '!', '"', 0x15, '$', '%', '&', /* scan 0- 7 */
216 '/', '(', ')', '=', '?', '`', 0x08, '\t', /* scan 8- F */
217 'Q', 'W', 'E', 'R', 'T', 'Z', 'U', 'I', /* scan 10-17 */
218 'O', 'P', 0x9a, '*', '\r', CN, 'A', 'S', /* scan 18-1F */
219 'D', 'F', 'G', 'H', 'J', 'K', 'L', 0x99, /* scan 20-27 */
220 0x8e, 0xf8, SH, '\'', 'Y', 'X', 'C', 'V', /* scan 28-2F */
221 'B', 'N', 'M', ';', ':', '_', SH, '*', /* scan 30-37 */
222 ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
223 0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */
224 '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */
225 '2', '3', '0', ',', 0, 0, '>', 0, /* scan 50-57 */
226 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
227 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
228 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
229 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
230 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
231 '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
232 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
233 },
234 { /* control code */
235 0xff, 0x1b, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, /* scan 0- 7 */
236 0x1e, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, '\t', /* scan 8- F */
237 0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, /* scan 10-17 */
238 0x0f, 0x10, 0x1b, 0x1d, '\r', CN, 0x01, 0x13, /* scan 18-1F */
239 0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0xff, /* scan 20-27 */
240 0xff, 0x1c, SH, 0xff, 0x1a, 0x18, 0x03, 0x16, /* scan 28-2F */
241 0x02, 0x0e, 0x0d, 0xff, 0xff, 0xff, SH, 0xff, /* scan 30-37 */
242 0xff, 0xff, CP, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */
243 0xff, 0xff, 0xff, 0xff, 0xff, NM, ST, 0xff, /* scan 40-47 */
244 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48-4F */
245 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50-57 */
246 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */
247 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */
248 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */
249 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */
250 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */
251 '\r', CN, '/', '*', ' ', ST, 0xff, 0xff, /* extended */
252 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */
253 },
254 { /* non numeric code */
255 0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */
256 '7', '8', '9', '0', 0xe1, '\'', 0x08, '\t', /* scan 8- F */
257 'q', 'w', 'e', 'r', 't', 'z', 'u', 'i', /* scan 10-17 */
258 'o', 'p', 0x81, '+', '\r', CN, 'a', 's', /* scan 18-1F */
259 'd', 'f', 'g', 'h', 'j', 'k', 'l', 0x94, /* scan 20-27 */
260 0x84, '^', SH, 0, 'y', 'x', 'c', 'v', /* scan 28-2F */
261 'b', 'n', 'm', ',', '.', '-', SH, '*', /* scan 30-37 */
262 ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
263 0, 0, 0, 0, 0, NM, ST, 'w', /* scan 40-47 */
264 'x', 'y', 'l', 't', 'u', 'v', 'm', 'q', /* scan 48-4F */
265 'r', 's', 'p', 'n', 0, 0, '<', 0, /* scan 50-57 */
266 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
267 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
268 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
269 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
270 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
271 '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
272 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
273 },
274 { /* Right alt mode - is used in German keyboard */
275 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 0 - 7 */
276 '{', '[', ']', '}', '\\', 0xff, 0xff, 0xff, /* scan 8 - F */
277 '@', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 10 -17 */
278 0xff, 0xff, 0xff, '~', 0xff, 0xff, 0xff, 0xff, /* scan 18 -1F */
279 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 20 -27 */
280 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 28 -2F */
281 0xff, 0xff, 0xe6, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 30 -37 */
282 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38 -3F */
283 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 40 -47 */
284 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48 -4F */
285 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '|', 0xff, /* scan 50 -57 */
286 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58 -5F */
287 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60 -67 */
288 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68 -6F */
289 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70 -77 */
290 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78 -7F */
291 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* extended */
292 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */
293 }
294 }
295 };
296
297static unsigned char ext_key_map[] = {
298 0x1c, /* keypad enter */
299 0x1d, /* right control */
300 0x35, /* keypad slash */
301 0x37, /* print screen */
302 0x38, /* right alt */
303 0x46, /* break */
304 0x47, /* editpad home */
305 0x48, /* editpad up */
306 0x49, /* editpad pgup */
307 0x4b, /* editpad left */
308 0x4d, /* editpad right */
309 0x4f, /* editpad end */
310 0x50, /* editpad dn */
311 0x51, /* editpad pgdn */
312 0x52, /* editpad ins */
313 0x53, /* editpad del */
314 0x00 /* map end */
315 };
c609719b 316
22e0f5a9
GB		 317/******************************************************************************/
318
319static int kbd_controller_present(void)
320{
321 return in8(I8042_STATUS_REG) != 0xff;
322}
323
48edb304
GB		 324/*
325 * Implement a weak default function for boards that optionally
326 * need to skip the i8042 initialization.
327 */
328int __weak board_i8042_skip(void)
329{
330 /* As default, don't skip */
331 return 0;
332}
333
c609719b
WD		 334/*******************************************************************************
335 *
336 * i8042_kbd_init - reset keyboard and init state flags
337 */
dd4a5b22 338int i8042_kbd_init(void)
c609719b 339{
dd4a5b22
GB		 340 int keymap, try;
341 char *penv;
c609719b 342
48edb304 343 if (!kbd_controller_present() || board_i8042_skip())
22e0f5a9
GB		 344 return -1;
345
a7b9fb91 346#ifdef CONFIG_USE_CPCIDVI
dd4a5b22
GB		 347 penv = getenv("console");
348 if (penv != NULL) {
349 if (strncmp(penv, "serial", 7) == 0)
350 return -1;
351 }
a7b9fb91 352#endif
dd4a5b22
GB		 353 /* Init keyboard device (default US layout) */
354 keymap = KBD_US;
355 penv = getenv("keymap");
356 if (penv != NULL) {
357 if (strncmp(penv, "de", 3) == 0)
358 keymap = KBD_GER;
359 }
360
361 for (try = 0; try < KBD_RESET_TRIES; try++) {
362 if (kbd_reset() == 0) {
363 kbd_mapping = keymap;
364 kbd_flags = NORMAL;
365 kbd_state = 0;
366 kbd_led_set();
367 return 0;
368 }
369 }
370 return -1;
c609719b
WD		 371}
372
373
374/*******************************************************************************
375 *
376 * i8042_tstc - test if keyboard input is available
bfc81252 377 * option: cursor blinking if called in a loop
c609719b 378 */
dd4a5b22 379int i8042_tstc(void)
c609719b 380{
dd4a5b22 381 unsigned char scan_code = 0;
c609719b
WD		 382
383#ifdef CONFIG_CONSOLE_CURSOR
dd4a5b22
GB		 384 if (--blinkCount == 0) {
385 cursor_state ^= 1;
386 console_cursor(cursor_state);
387 blinkCount = CONFIG_SYS_CONSOLE_BLINK_COUNT;
388 udelay(10);
389 }
c609719b
WD		 390#endif
391
dd4a5b22
GB		 392 if ((in8(I8042_STATUS_REG) & 0x01) == 0) {
393 return 0;
394 } else {
395 scan_code = in8(I8042_DATA_REG);
396 if (scan_code == 0xfa)
397 return 0;
398
399 kbd_conv_char(scan_code);
400
401 if (kbd_input != -1)
402 return 1;
403 }
8bde7f77 404 return 0;
c609719b
WD		 405}
406
407
408/*******************************************************************************
409 *
410 * i8042_getc - wait till keyboard input is available
bfc81252 411 * option: turn on/off cursor while waiting
c609719b 412 */
dd4a5b22 413int i8042_getc(void)
c609719b 414{
dd4a5b22
GB		 415 int ret_chr;
416 unsigned char scan_code;
c609719b 417
dd4a5b22
GB		 418 while (kbd_input == -1) {
419 while ((in8(I8042_STATUS_REG) & 0x01) == 0) {
c609719b 420#ifdef CONFIG_CONSOLE_CURSOR
dd4a5b22
GB		 421 if (--blinkCount == 0) {
422 cursor_state ^= 1;
423 console_cursor(cursor_state);
424 blinkCount = CONFIG_SYS_CONSOLE_BLINK_COUNT;
425 }
426 udelay(10);
c609719b 427#endif
dd4a5b22
GB		 428 }
429 scan_code = in8(I8042_DATA_REG);
430 if (scan_code != 0xfa)
431 kbd_conv_char (scan_code);
8bde7f77 432 }
dd4a5b22
GB		 433 ret_chr = kbd_input;
434 kbd_input = -1;
435 return ret_chr;
c609719b
WD		 436}
437
438
439/******************************************************************************/
440
dd4a5b22 441static void kbd_conv_char(unsigned char scan_code)
c609719b 442{
dd4a5b22
GB		 443 if (scan_code == 0xe0) {
444 kbd_flags |= EXT;
445 return;
8bde7f77 446 }
c609719b 447
dd4a5b22
GB		 448 /* if high bit of scan_code, set break flag */
449 if (scan_code & 0x80)
450 kbd_flags |= BRK;
451 else
452 kbd_flags &= ~BRK;
453
454 if ((scan_code == 0xe1) || (kbd_flags & E1)) {
455 if (scan_code == 0xe1) {
456 kbd_flags ^= BRK; /* reset the break flag */
457 kbd_flags ^= E1; /* bitwise EXOR with E1 flag */
458 }
459 return;
460 }
c609719b 461
dd4a5b22
GB		 462 scan_code &= 0x7f;
463
464 if (kbd_flags & EXT) {
465 int i;
466
467 kbd_flags ^= EXT;
468 for (i = 0; ext_key_map[i]; i++) {
469 if (ext_key_map[i] == scan_code) {
470 scan_code = 0x80 + i;
471 break;
472 }
473 }
474 /* not found ? */
475 if (!ext_key_map[i])
476 return;
477 }
8bde7f77 478
dd4a5b22
GB		 479 switch (kbd_fct_map[scan_code]) {
480 case AS:
481 kbd_normal(scan_code);
482 break;
483 case SH:
484 kbd_shift(scan_code);
485 break;
486 case CN:
487 kbd_ctrl(scan_code);
488 break;
489 case NM:
490 kbd_num(scan_code);
491 break;
492 case CP:
493 kbd_caps(scan_code);
494 break;
495 case ST:
496 kbd_scroll(scan_code);
497 break;
498 case AK:
499 kbd_alt(scan_code);
8bde7f77 500 break;
8bde7f77 501 }
dd4a5b22 502 return;
c609719b
WD		 503}
504
505
506/******************************************************************************/
507
dd4a5b22 508static void kbd_normal(unsigned char scan_code)
c609719b 509{
dd4a5b22
GB		 510 unsigned char chr;
511
512 if ((kbd_flags & BRK) == NORMAL) {
513 chr = kbd_key_map[kbd_mapping][kbd_state][scan_code];
514 if ((chr == 0xff) || (chr == 0x00))
515 return;
516
517 /* if caps lock convert upper to lower */
518 if (((kbd_flags & CAPS) == CAPS) &&
519 (chr >= 'a' && chr <= 'z')) {
520 chr -= 'a' - 'A';
521 }
522 kbd_input = chr;
8bde7f77 523 }
c609719b
WD		 524}
525
526
527/******************************************************************************/
528
dd4a5b22 529static void kbd_shift(unsigned char scan_code)
c609719b 530{
dd4a5b22
GB		 531 if ((kbd_flags & BRK) == BRK) {
532 kbd_state = AS;
533 kbd_flags &= (~SHIFT);
534 } else {
535 kbd_state = SH;
536 kbd_flags |= SHIFT;
537 }
c609719b
WD		 538}
539
540
541/******************************************************************************/
542
dd4a5b22 543static void kbd_ctrl(unsigned char scan_code)
c609719b 544{
dd4a5b22
GB		 545 if ((kbd_flags & BRK) == BRK) {
546 kbd_state = AS;
547 kbd_flags &= (~CTRL);
548 } else {
549 kbd_state = CN;
550 kbd_flags |= CTRL;
551 }
c609719b
WD		 552}
553
554
555/******************************************************************************/
556
dd4a5b22 557static void kbd_caps(unsigned char scan_code)
c609719b 558{
dd4a5b22
GB		 559 if ((kbd_flags & BRK) == NORMAL) {
560 kbd_flags ^= CAPS;
561 kbd_led_set(); /* update keyboard LED */
562 }
c609719b
WD		 563}
564
565
566/******************************************************************************/
567
dd4a5b22 568static void kbd_num(unsigned char scan_code)
c609719b 569{
dd4a5b22
GB		 570 if ((kbd_flags & BRK) == NORMAL) {
571 kbd_flags ^= NUM;
572 kbd_state = (kbd_flags & NUM) ? AS : NM;
573 kbd_led_set(); /* update keyboard LED */
574 }
c609719b
WD		 575}
576
577
578/******************************************************************************/
579
dd4a5b22 580static void kbd_scroll(unsigned char scan_code)
c609719b 581{
dd4a5b22
GB		 582 if ((kbd_flags & BRK) == NORMAL) {
583 kbd_flags ^= STP;
584 kbd_led_set(); /* update keyboard LED */
585 if (kbd_flags & STP)
586 kbd_input = 0x13;
587 else
588 kbd_input = 0x11;
589 }
c609719b
WD		 590}
591
592/******************************************************************************/
593
dd4a5b22 594static void kbd_alt(unsigned char scan_code)
c609719b 595{
dd4a5b22
GB		 596 if ((kbd_flags & BRK) == BRK) {
597 kbd_state = AS;
598 kbd_flags &= (~ALT);
599 } else {
600 kbd_state = AK;
601 kbd_flags &= ALT;
602 }
c609719b
WD		 603}
604
605
606/******************************************************************************/
607
dd4a5b22 608static void kbd_led_set(void)
c609719b 609{
dd4a5b22
GB		 610 kbd_input_empty();
611 out8(I8042_DATA_REG, 0xed); /* SET LED command */
612 kbd_input_empty();
613 out8(I8042_DATA_REG, (kbd_flags & 0x7)); /* LED bits only */
c609719b
WD		 614}
615
616
617/******************************************************************************/
618
dd4a5b22 619static int kbd_input_empty(void)
c609719b 620{
ef94f7fa 621 int kbdTimeout = KBD_TIMEOUT * 1000;
c609719b 622
ef94f7fa
GB		 623 while ((in8(I8042_STATUS_REG) & I8042_STATUS_IN_DATA) && kbdTimeout--)
624 udelay(1);
c609719b 625
22e0f5a9 626 return kbdTimeout != -1;
c609719b
WD		 627}
628
629/******************************************************************************/
630
dd4a5b22 631static int kbd_reset(void)
c609719b 632{
dd4a5b22
GB		 633 if (kbd_input_empty() == 0)
634 return -1;
c609719b 635
dd4a5b22 636 out8(I8042_DATA_REG, 0xff);
c609719b 637
dd4a5b22
GB		 638 if (kbd_input_empty() == 0)
639 return -1;
c609719b 640
a7b9fb91 641#ifdef CONFIG_USE_CPCIDVI
dd4a5b22 642 out8(I8042_COMMAND_REG, 0x60);
a7b9fb91 643#else
dd4a5b22 644 out8(I8042_DATA_REG, 0x60);
a7b9fb91 645#endif
c609719b 646
dd4a5b22
GB		 647 if (kbd_input_empty() == 0)
648 return -1;
c609719b 649
dd4a5b22 650 out8(I8042_DATA_REG, 0x45);
c609719b
WD		 651
652
dd4a5b22
GB		 653 if (kbd_input_empty() == 0)
654 return -1;
c609719b 655
dd4a5b22 656 out8(I8042_COMMAND_REG, 0xae);
c609719b 657
dd4a5b22
GB		 658 if (kbd_input_empty() == 0)
659 return -1;
c609719b 660
dd4a5b22 661 return 0;
c609719b 662}
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